The difference between vertical and horizontal injection molding machines

Injection molding machine is also known as an injection molding machine or injection machine. It is the main molding equipment for making thermoplastic or thermosetting materials into various shapes of plastic products using plastic molding molds.

In terms of function, injection molding machines can be divided into angle injection molding machines, two-color injection molding machines, multi-station molding machines, and electric injection molding machines.

According to the arrangement of the injection device and the clamping device. It can be divided into a vertical injection molding machine. A horizontal injection molding machine, and a vertical and horizontal composite injection molding machine. So what are the characteristics of the vertical injection molding machine and the horizontal injection molding machine?

 

1. Vertical injection molding machine

[caption id="attachment_3828" align="alignnone" width="661"] Vertical injection molding machine[/caption]

The axis of the injection equipment and the clamping equipment are coaxial, and they are placed in a vertically upward direction. Its advantages are that it occupies a small area. It is convenient to disassemble the equipment and the mold, and it is not easy to insert the insert to fall down. The defect is that after the plastic part is pushed out of the mold, it needs to be taken out manually. To complete the full automation, it is necessary to use a manipulator to take the part. The high body of the vertical machine affects its structural stability, so this method is suitable for the production of simple products.

Features：

1. The injection device and the mold clamping device are located on the same vertical centerline, and the mold opens and closes in the vertical direction. So the floor area is very small, only about half of the horizontal machine.

2. The surface of the mold is facing upwards. The position of the insert is very convenient, and the insert molding can be easily inserted.

3. Due to the phenomenon of gravity, the mold is supported by a horizontal template to provide durability to maintain the accuracy of the machine and mold.

4. A simple robot with precise control can retrieve each plastic part cavity.

5. Open universal clamping device, easy to configure, suitable for various types of automation devices, there is no difficulty for the automatic forming of complex and delicate products.

6. The vertical injection molding machine is equipped with a conveying device. Which can realize automatic production and molding.

7. The fluidity of the resin can be ensured, and the temperature distribution of the mold in the mold can be consistent.

8. Equipped with rotating table, movable table, and inclined table, which can be easily realized for insert molding and in-mold combination molding.

9. When testing small batches, the mold structure is simple, the price is low, and it is easy to unload.

10. After repeated seismic tests, the vertical injection molding machine has better seismic resistance than the horizontal machine due to its low center of gravity.

 

2. Horizontal injection molding machine

[caption id="attachment_3829" align="alignnone" width="681"] Horizontal injection molding machine[/caption]

The axis of the injection equipment and the clamping equipment are coaxial and placed horizontally. The horizontal machine is now the most widely used model, because of its low body and stable equipment. This method is used in general large and medium injection molding machines. This type of injection molding machine is easy to operate and repair. The plastic part can be automatically dropped after being pushed out of the mold cavity, and it is easy to complete the full automatic operation. The disadvantage is that the machine tool occupies a large area. It is difficult to place the insert into the mold, and the mold equipment is more labor-intensive.

Features

1. Since the mainframe of the main engine is very low, there is no height restriction on the installation factory.

2. If the product can fall automatically. It is not necessary to use the robot, and the product is automatically formed.

3. The horizontal injection molding machine has a low body, which makes the operation easier and the maintenance easier.

4. The mold should be installed as a crane.

5. When multiple units are arranged side by side, the molded products can be easily collected and packaged by the conveyor belt.

Multi cavity mold

 

What is the definition of "multi-cavity injection mold"?

Injection molds contain more than one cavity of the same shape. Multiple-cavity injection molds have a symmetrical layout, producing many parts of the same design.

Cavity Construction –Plastic Mold Making In China Design

  Basically, plastic mold making in the china cavity will be consist of a cavity main insert, and cavity insert, for this product. We use a cavity main insert shaped like a pin, and to release the air trap. We put a cavity insert pin (pink color) with gas vent land. Gate located at cavity main insert that one position with the parting line China Injection mold making process Cavities: 1, 2,4 to muti cavity up to 120 cavities mold Treatment: Pretreat, Heated to HRC 54, Or nitriding Mold Steel: Cavity, core, and slide; P20.2738.2312,2344, H13 available Standard: YUDO, DEM, HASCO, LKM Design Software: UG, PRO-E, SOLIDWORKS, AUTOCAD

Why custom multi-cavity injection mold fill unevenly

The balanced filling is critical for making china plastic injection molding identical parts, achieving high CPKs, holding tight tolerances, and getting “good” data from the design of experiments.

We know for plastic injection moulding about the importance of uniform filling or balanced flow for each cavity of a multi-cavity mold. The balanced filling is critical for making identical parts, achieving high CPKs, holding tight tolerances, and getting “good” data from the design of experiments (DOEs). Balanced flow is critical for both filling and packing (filling influences packing).

The real problem is determining which one or combination of these is affecting your parts:

1. China injection molds with melted plastic.

Unmelted or partially melted plastic can disrupt the flow in the runner, gate, or part. This may seem like a minor issue, yet my experience tells me it is significant. For example, temperature control of the nozzle tip and body is notoriously problematic, especially with cold runners. Poor screw design may also result in the non-uniform melt.  Then there is the temperature control of the manifolds and tips in hot-runner systems. How many of you are getting some “unusual” temperatures to get the hot runner to function?

2. Differential venting among the injection mold cavities or injection mould flow path. Yes, cold runners should be vented. Air-water vapor, off-gases, or volatiles from the polymer can build pressure in cavities and restrict filling. I demonstrate this at every one of my seminars. When troubleshooting venting issues for fill balance, one trick is to make short shots at 90+% full and 65-80% full to see if the balance changes.


3. Non-uniform cooling of the china injection molds, hot-runner system, or hot tips. Plugged or partially
plugged water lines; water lines too close to the parts or too far away; coolant taking the path of least   
resistance; laminar flow; air trapped in a coolant channel; or other equipment coming on and offline can
all wreak havoc with proper cooling. While rarely done, a case can be made for regulating water coolant
flow separately through each channel of your molds.

China custom multi-cavity injection mold part design

1, Particularly non-uniform wall thickness. If you have thick and thin sections in the part, the thick section will fill relatively easily compared with the thin section. If gated into the thick section, the flow may “hesitate” at the thick-thin junction, causing a seesaw filling pattern. This factor must be considered in “living hinge” applications.

2, Lack of proper velocity control during filling. Too many profiled velocity changes; running the process pressure-limited, or setting up with different fill times—these are big culprits for filling imbalances. Fill time basically establishes a shear rate, which in turn establishes viscosity. Varying fill time (shear rate) from shot to shot, run to run, or machine to machine provides a “different” process due to huge changes in viscosity. Change the viscosity and you can the change fill pattern.

3. custom multiple-cavity injection mold gate, not all the same size. No problem, as this is difficult to check with a pin
gauge, Relatively few pin gauges measure gate land length. It is difficult and time-consuming to measure land
length, but it’s essential because gate land length establishes a pressure drop. To achieve balanced filling. you
need each gate to provide an identical pressure drop. There is a reason most mold builders have a rule for
maximum land length.

4. Unbalanced flow path. If flow distance and/or path geometry are not identical, the non-uniform filling is inevitable

A Comparative Analysis between China and Us Injection Mold Industry

 With the development and technical level of injection molds in China. More and more American clients are choosing to cooperate with Chinese injection molding manufacturers. China’s injection molding industry has a distinct advantage over the United States in terms of manufacturing costs.

A Comparative Analysis between China and Us Injection Mold Industry

1, The labor costs: the US labor costs are 3.57 times the cost of domestic labor.

The domestic total output of 4,500 tons of production line 250 people. The United States to improve equipment, with the production capacity of two production lines 180 people. According to the domestic monthly salary plus a total of 4500 yuan of various types of social security costs. In the United States, no one monthly salary plus insurance costs a total of 3,600 US dollars per ton of labor costs: domestic 250 * 4500 yuan/month / 4500 tons/month = 250 Yuan/ton, equivalent to 40.32 US dollars/ton. Which does not include the company providing accommodation and other expenses. The United States is 180 people * 3600 US dollars / month / 4500 yuan / month = 144 US dollars / ton, 2.57 times higher than the domestic.

2, The depreciation cost, the US depreciation cost is 1.7 times the cost of domestic depreciation.

With the production capacity of equipment and land plant. The domestic production line investment 90 million yuan. The US production line investment 25 million US dollars. According to 15 years depreciation with an annual output of 50,000 tons, respectively, calculated tons of depreciation costs: domestic 90 million / 15 years / 50000 tons/year = 120 Yuan/ton, equivalent to 19.35 US dollars/ton. The United States is 25 million US dollars / 15 years / 50000 tons / year = 33 US dollars / ton, 1.7 times higher than the domestic.

3, Plant construction costs: US plant construction costs are 4 times that China

While the United States its own favorable conditions can not be ignored.

1, Land costs: China is 9 times the United States

Domestic land price is 9 times the US land price, and the United States is a permanent property right. We are 50 years of property rights. For example, in recent years, the price of industrial land in Shanghai is 180,000 yuan/mu. The current US land price is only 20,000 US dollars/acre, equivalent to 20,000 yuan/mu.

2, Logistics costs: China is the United States 2 times

Domestic logistics costs are twice the cost of US logistics. To oil prices, for example, China’s oil price is twice that of the United States, high oil prices are high logistics costs.

Compared to the United States in addition to our hardware there

1, The relevant national policy support;

2 The gradual improvement of infrastructure to the growing market demand to provide the possibility;

3, The world’s casting mold industry centers on China’s huge opportunity for the transfer of electricity. And the general application of sub-business to China’s mold industry has brought great business opportunities;

4, Low labor costs and raw material prices, which urgently need cost savings in the international environment, making China focus on attention. At present, the domestic injection mold industry development situation is excellent. In the industry gradually improve the level of technology at the same time, the scale of development is also increasing.

China and the United States injection mold manufacturing industry has their own advantages, consider injection mold companies development Inevitable Trends. China is more suitable for the custom development of commodity injection mold.

last news-2018-8.27

Us begins to impose 25% punitive tariff on Chinese injection Mold

A Comparative Analysis between China and Us Injection Mold Industry

Injection Mold Process

 

China Plastic Injection Molding Machine-Injection Molding Process

Injection molding machines, also known as presses, consist of a material hopper. An injection ram or screw-type plunger, and a heating unit. The molds are clamped to the platen of the molding machine. Where plastic is injected through the sprue orifice to create injection molds.

Here we especially introduce a high-speed injection molding machine in China.

1. High-speed injection molding machine Clamping Unit

The new generation toggle mold locking device. And computer emulation optimized toggle parameter makes motions of the moving plate fast and steady.

2. High-speed injection molding machine Hydraulic Unit

High efficiency, energy-saving, and high precise proportional pressure. And the flow variable displacement pump system makes the hydraulic system output match. The required power for the entire machine operation without high-pressure throttle and overflow energy loss.

3. High-speed injection molding machine Injection Unit
The short and forceful double-cylinder injection system is used to ensure steady injection motions. The strain-free fixed mold plate and screw assembly with optimized design help to reach better plasticating capacity and effect.

4. High-speed injection molding machine Control Unit
The high-performance special control for injection molding machines. Switch of Chinese and English, clear and visual, and easy operation.

Mold making in China

Mold is the common term used to describe the tooling used to produce injection molded plastic parts.
It is mainly the production of thermoplastic products the most common kind of mold. Plastic injection mold processing equipment for the plastics injection molding machine. Plastic melt is first heated in the heated barrel of the end of the injection machine. And then injection molding machine into the mold cavity under the impetus of a screw or a plunger. The injection machine nozzle and mold casting system. Plastic cooling hardening molding, and mold release to get the products. Its structure is usually molded parts, casting systems, and parts-oriented components. The introduction of institutions, thermostat systems, exhaust systems, and support components.

Manufacturing materials commonly used plastic mold steel modules, commonly used material is mainly carbon structural steel, carbon tool steel, alloy tool steel, and high-speed steel. The injection molding process usually applies only to the varieties of products. Production of the thermoplastic injection molding process to produce plastic products is very extensive. From the daily necessities of life to all kinds of complex mechanical, electrical, and transport parts are injection molding. It is the most widely used in the production of plastics processing methods.

Custom Mold Design - Injection Molds

Molds consist of two primary halves, injection molds (A plate) and ejector molds (B plate). First, plastic resin enters the mold through a sprue in the injection mold. The sprue bushing is to seal tightly against the nozzle of the injection barrel of the molding machine to allow molten plastic to flow from the barrel into the mold, also known as a cavity. The sprue bushing directs the molten plastic to the cavity images through channels that are machined into the faces of the A and B plates. These channels allow the plastic to run along with them, so they are referred to as runners. The molten plastic flows through the runner and enters one or more specialized gates, and into the cavity geometry to form the desired injection molded part.

According to the size of the production capacity, product structure, to determine the appropriate number of cavities, more precision molds, processing difficulty, the higher the cost of the mold cavity. However, the unit price of injection molded parts dropped significantly.

Factors that affect the size of the multi-cavity:

1, Precision injection mold processing. Such as cavity discharge, each chamber is a discharge. The discharge process is not well controlled, cavity size deviation.

2, The injection mold assembly precision. Because of these reasons the assembly results in the internal structure of position deviation.

3, Injection mold design factors. Such as the design of the flow channel. And reasonable uniformity into the plastic, unreasonable runner advanced gum near the nozzle chamber, away from the last glue. Because of contractions are inconsistent, holding pressure situation size will also inconsistent deviation. Into the rubber mouth. The diameter size will cause the size of the deviation. Mold waterway design is unreasonable, in the cavity waterway layAccording to the size of the production capacity, product structure, to determine the appropriate number of cavities, more precision molds, processing difficulty, the higher the cost of the mold cavity. However, the unit price of injection molded parts dropped significantly.

 

Plastic injection mold cost and useful in China

High-quality plastic injection mold includes a fast running cycle, long mold life, easy maintenance, and safe operation. The mold design, mold material, mold tooling machines, and mold assembling are very important to making a high-quality injection mold Usually customers would doubt why for the same mold, different suppliers quoted a different price, some even have a big difference. For mold manufacturers in china, offer an inquiry, engineers will check the mold structure according to the original sample pictures or drawing estimate the mold size, mold ejection method, injection gate, and so on. After we got the above information. We could calculate the mold cost according to the customer's requirement.

Mold cost includes mold material cost, mold design cost, mold tooling cost, managing cost, and after-sales service cost. We suggest using good steel material for a high quantity requirement mold. If the mold structure is complex, we need to consider the mold tooling more. The mold could run a long time with high-quality injection molds, and it is easier for mold maintenance. The production efficiency is much higher with continuously manufacturing. We suggest do not only compare the mold price when investing in a new mold. Because after the mold runs in a customer's factory, it would also affect working much. injection mold cost estimate. The Mold price difference in China, high-quality injection molds, high-efficiency molding lines, and famous mold suppliers in China. Mold after-sales service. The length of time from closing the mold to ejecting the finished plastic molding is the cycle.

The size of an injection molded part will depend on several factors (material, wall thickness, shape, process, etc). The initial raw material required may be measured in the form of granules, pellets, or powders. Here are some ranges of sizes.

CNC-EDM-WIRE CUT MACHINE-Injection Mold Process

Injection Mold Companies use three main methods to manufacture molds: CNC number control milling machining and EDM, Wire cut machine... With technological development, CNC machining became the predominant means of making more complex molds with more accurate mold details in less time than traditional methods. Computer numeric controlled machining centers are used to produce a wide range of components. And tooling costs involved have continued to become more affordable. In general, large production runs requiring relatively simple designs are better served by other methods, although CNC machining can now accommodate a wide range of manufacturing needs. CNC milling centers are ideal solutions， everything ranging from prototyping and short-run production of complex parts. The fabrication of unique precision components.

The basic EDM process is really quite simple.

An electrical spark is created between an electrode and a workpiece. Electric Discharge Machining The spark is visible evidence of the flow of electricity. This electric spark produces intense heat with temperatures reaching 8000 to 12000 degrees Celsius, melting almost anything. The spark is very carefully controlled and localized so that it only affects the surface of the material. The EDM process usually does not affect the heat treatment below the surface. With wire EDM the spark always takes place in the dielectric of deionized water. The conductivity of the water is carefully controlled making an excellent environment for the EDM process. The water acts as a coolant and flushes away the eroded metal particles.

WIRE CUT MACHINE

Wire cutting uses a metallic wire to cut a programmed contour in a workpiece. Extrusion dies and blanking punches are very often machined by wire cutting. Cutting is always through the entire workpiece. To start machining it is first necessary to drill a hole in the workpiece or start from the edge. In the machining area, each discharge creates a crater in the workpiece and an impact on the tool. The wire can be inclined, thus making it possible to make parts with taper, or with different profiles at the top and bottom. There is never any mechanical contact between the electrode and the workpiece (see above). The wire is usually made of brass or stratified copper and is between 0.1 and 0.3 mm in diameter.

 

Rapid prototyping technology

 

What is Rapid Prototyping?

Rapid Prototyping (RP) technology, also known as a rapid prototyping technology, is one of the rapidly developing
manufacturing technologies in the world today. Rapid prototyping technology is a computer-controlled, based
on the principle of discrete, stacked with different methods of accumulation of materials, and ultimately
complete the parts of the forming and manufacturing technology.
 
1, From the forming point of view, the parts can be regarded as "point" or "surface" superposition. The
geometrical information of "point" or "face" is discretized from the CAD electronic mode.l And then combined
with the information of the forming process parameters. The material is regulated to accumulate the parts
from point to the surface and from the surface to the surface.
 
2, From the manufacturing point of view. It is based on CAD modeling to generate parts of the three-dimensional
geometric information. Control a multi-dimensional system, by a laser beam. Or other methods of material layer by
layer to form a prototype or parts.
 

The main features of RP technology are:

1, Rapid RP manufacturing technology is the concurrent engineering of complex prototyping or parts
manufacturing an effective means to enable product design and mold production simultaneously, thereby
enhancing R & D efficiency, shorten the product design cycle, greatly reducing the cost of new product
development And risk, for the smaller size, shaped products are particularly applicable.
 
2, CAD / CAM technology integration Design and manufacture of integration has been a difficult point,
computer-aided process (CAPP) at this stage because it can not and CAD, CAM completely seamless
docking, which is restricting the manufacturing information And rapid prototyping technology integrated CAD,
CAM, laser technology, numerical control technology, chemical engineering, material engineering and many
other technologies, making the concept of design and manufacturing integration to achieve a perfect one.
 
3, A complete reproduction of three-dimensional data through rapid prototyping and manufacturing of complete
parts, complete true reproduction of three-dimensional modeling, regardless of the outer surface of the contour
or the cavity of the shaped hole can be true and accurate completion of modeling, basically, no longer need
to help External devices to repair.
 
4, A wide range of molding materials So far, all kinds of RP equipment used in a variety of materials, resin,
nylon, plastic, paraffin, paper, and metal or ceramic powder, basically meet the vast majority of products
on the material Mechanical performance requirements.
 
5, To create significant economic benefits Compared with the traditional mechanical processing, development
costs to save more than 10 times, the same rapid prototyping technology to shorten the enterprise product
development cycle, so that in the new product development process of repeated revisions to the design of the
the program greatly Reduce and basically eliminate the problem of modifying the mold, to create economically
benefits are obvious.
 
6, The application of industry-wide RP technology After years of development, technology has basically formed a
the system, the same can be applied to the industry has gradually expanded, from product design to mold design and manufacturing,
materials engineering, medical research, Culture and art, construction, etc. are gradually using the RP technology, making
RP technology has broad prospects.
 

Rapid prototyping technology direction of development

 
From the current RP technology research and application status, rapid prototyping technology for further research and development work mainly in the following areas:

(1) The development of good performance rapid prototyping materials, such as low cost, easy to shape, small
deformation, high strength, durable, and pollution-free forming material.

(2) To improve the processing speed RP system and open up the manufacturing process of parallel methods.

(3) To improve the reliability of the rapid prototyping system to improve its productivity and the ability to produce
large pieces of equipment to optimize the structure, especially to improve the accuracy of forming parts,
surface quality, mechanical and physical properties, for further mold processing and functional experiments
provide the basis.
 
 (4) The development of rapid prototyping of high-performance RPM software. Improve the speed and accuracy of
data processing, research, and development using CAD raw data direct slicing method to reduce the STL format
conversion and slicing process generated by the loss of accuracy.

(5) The development of new forming energy.
 
6) Rapid prototyping method and process improvement and innovation. Direct metal forming technology will
become the future research and application of another hot spot.

(7) Rapid prototyping technology and CAD, CAE, RT, CAPP, CAM, and high precision automatic measurement,
reverse engineering integration research.

(8) To improve network services research efforts to achieve remote control.

automotive part

 

Plastic Injection Molding in China

CNMOULDING is a leading supplier and manufacturer of plastic injection molded products, specializing in the automotive and general industry areas. Manufacture. We are certified ISO9001-2015 certificate. We have a professional engineer team to assist our customers to develop their products and tools, with over 100 engineers with more than 10 years of experience. Now we are the leading supplier of plastic injection mold in Shanghai China.

China is one of the largest and most dynamic markets for automotive parts manufacturing, supplying both domestic and international automotive industries.   The country has a well-established supply chain, advanced manufacturing capabilities, and a growing focus on innovation, particularly in the electric vehicle (EV) sector.   Below is an overview of automotive parts production in China, key players, and trends shaping the industry.

 

Key Automotive Parts Produced in China

China manufactures a wide range of automotive components, including:

 

1.   Engine Components

Cylinder heads, pistons, crankshafts, and camshafts.

Turbochargers and fuel injection systems.

 

2.   Transmission and Drivetrain Parts

Gearboxes, clutches, and drive shafts.

Differential systems and axles.

 

3.   Electrical and Electronic Components

Sensors, control units, and wiring harnesses.

Infotainment systems and displays.

 

4.   Chassis and Suspension Parts

Shock absorbers, springs, and steering systems.

 Brake systems (discs, pads, and calipers).

 

5.   Body and Interior Parts

Sheet metal components, bumpers, and doors.

 Seats, dashboards, and trim panels.

 

6.   Lighting Systems

LED headlights, taillights, and interior lighting.

 

7.   EV-Specific Components

Battery packs, battery management systems (BMS), and electric motors.

 Charging ports, inverters, and power electronics.

Advantages of China’s Automotive Parts Industry

1.   Cost Efficiency: Lower labor and production costs compared to many other countries.

2.   Scale and Capacity: Massive production capacity to meet both domestic and global demand.

3.   Supply Chain Integration: A well-developed supply chain with access to raw materials and components.

4.   Government Support: Strong government backing for the automotive industry, particularly for EVs and new energy vehicles (NEVs).

5.   Technological Advancements: Increasing investment in R&D, particularly in EV and autonomous driving technologies.

Trends Shaping the Industry

1.   Electric Vehicle (EV) Boom

China is the world’s largest EV market, driving demand for EV-specific components like batteries, motors, and power electronics.

The government’s push for NEVs (New Energy Vehicles) has accelerated innovation and production.

 

2.   Localization of Supply Chains

International automakers are increasingly sourcing parts locally to reduce costs and comply with Chinese regulations.

Domestic suppliers are expanding their capabilities to meet global standards.

 

3.   Smart and Connected Vehicles

Growing demand for advanced driver-assistance systems (ADAS), sensors, and connectivity solutions.

Chinese companies are investing heavily in autonomous driving technologies.

 

4.   Sustainability and Green Manufacturing

Emphasis on reducing emissions and adopting eco-friendly production methods.

Increasing use of lightweight materials like aluminum and advanced plastics to improve fuel efficiency.

 

5.   Digitalization and Industry 4.0

Adoption of smart manufacturing technologies, such as AI, IoT, and robotics, to improve efficiency and quality.

Digital platforms for supply chain management and production optimization.

 

6.   Export Growth

Chinese auto parts suppliers are expanding their presence in international markets, particularly in Southeast Asia, Europe, and North Americ

Post-processing technology of injection products

 

Post-processing technology of injection products

For printing on the surface of the plastic products, printing or when the pattern. there are several methods.

1, Stencil printing of this method is the most common and also the most one method; they are generally suitable for flat or curvature of the small print.

2, The principle of curved surface printing flexography printing ink is first placed within the text or logo engraved gravure, then copy the text or images onto a surface. The surface will re-use the text or pattern is transferred to the surface of the molded product. And finally through an ultraviolet light irradiation heat treatment or the like so that the ink is cured.

 

injection parts processing-Surface printing process:

Skim A. molded products

1. molded product surface treatment (when necessary)
2. Printing
3. curing inks
4. applying post-processing such as excessive (if necessary)

injection parts processing-Printing Process

1. Gravure ink into the.
2. Scrape off the excess ink.
3. Extruded surfaces are made of ink.
4. The surface of the ink transferred to the surface of the molded article.
5. Cleaning surfaces, layout (if necessary), and printing will start with version patterns or patterns printed on the plastic sheet or rubber roller. The rubber roller will no longer sheet or pattern or pattern onto the surface of the beer.

Pros: Several colors can be applied in a single operation.

Disadvantages: lower productivity and not getting opacity strong prints. How to choose a suitable plastic sheet or rubber roller and oil, and so on.

1， The use of hot stamping foil and the color pattern engraved or font of the hot mold. Under controlled temperature and pressure. The surface of the emboss pattern of manufacturing color package or method of beer font member. Which is mounted on the operation only by fixing the press hot mold foil color on regional products across the pressure needed to be applied.

2, The paint surface treatment of plastic products (color) of the most commonly used techniques,

Can be divided into:

A general coloring, that this spray paints mostly by hand, do not have strong abrasion, easy to paint chips.

B, PU grade varnish this method is finished after the spray drying primer, then spray on the surface layer of the PU varnish method to achieve abrasion and gloss. General home appliances or many everyday items are through PU surface treatment.

C, UV grade varnish finish this method after spray primer and then sprayed with a layer of surface UV varnish, gloss, feel, rubbing can achieve very good results. General phone mold products and communications products die with such an approach.

 The use of the electrolytic plating method is electroplating the metal or alloy deposited on the surface, to form a uniform, dense and good adhesion of metal layers, called plating. Simple to understand, the physical and chemical changes, or in combination.

Purposes: a. Corrosion b. Protective decorative c. Anti-wear d. Electrical properties: According to parts work requirements, providing conductive or insulating coating performance e. Process requirements

The surface of the article by electrolytic uniform, dense, with good metal or alloy deposited layer forming process. The process is a relatively complicated process, but it has many advantages. Such as many types of deposited metal can be obtained in various colors, with Compare similar process being relatively cheaper than in terms of prices.

 

Custom Plastic Injection Molding Supplier

 

Plastic parts of the silk painting

Custom Plastic Injection Molding Supplier: Printing plastic parts, plastic products, secondary mechanic (or reprocessing) one. The so-called secondary processing is in the plastics injection molding, once again decorative surface treatment, such as plastic plating, plastic coating, plastic stamping, plastic printing and so on. So to secondary plastics processing, mainly by the performance of the plastic itself, the decision, such as dyeing it relatively simple, and the color of the light fastness is also poor. To compensate for these shortcomings, improving the appearance of decorative plastic products, on the need for secondary processing.

Causes of blooming in Injection Molding Products

Plastic in the filling process by the interference of the gas products often appear on the surface of silver stripes or small blooming or products within the thick wall to form blooms. The main source of these gases is raw materials
containing water or volatile substances or lubricant overdose, it may be too high-temperature plastic material to produce a long degradation of gas. 

We offer transparent plastic product solutions

Currently, in China, transparent injection molded parts are widely used in automotive, medical, lighting,
consumer products, cosmetics packaging industry, transparent plastic injection molded parts typically
use materials PC, POM, PMMC, AS, PET.

  Compared with the other colors of plastic products, strict requirements are necessary for appearance,
transparent plastic member, which makes injection molding more complicated. Factors and injection
mold design and manufacturing conditions determine the final outcome in the future, there are some
problems often occur in the transparent plastic molding process, we offer some solutions in a transparent
plastic cover for exampleinjection molding products

We specialized in plastic injection molding

CN-moulding plastic Co., Ltd. is a Custom Plastic Injection Molding Supplier, we can manufacturing and fit plastic products for your special specifications. Our new molds from your CAD files, reverse engineering plastic parts,
plastic injection molded parts or design work, your description/range. We use the latest 3D modeling software,
and you can import any of your designs for injection molded parts. Forming part of the existing reverse engineering capabilities, enabling us to establish new and improved customization tools for our customers.

Plastic products shrinkage for many reasons:

The shrinkage of wall thickness due to the inherent characteristics of plastic, after injection molding cooling, there will be some extent of contraction. Shrinkage of the plastic shell dents primarily on the thick-walled outer surface, which is more common for larger plastic products, plastic materials shrink due to their volumetric properties, resulting in Raw materials appear
into the phenomenon. Therefore, the surface of the finished product will appear in signs of depression.
Shrinkage is the most common adverse effect on the finished appearance and occurs mainly at the wall
thickness. The practice has proved that if the injection pressure drops, the chances of shrinkage will increase.

How much injection molding cost in China

 

Various injection molded part cost all of industry

All kinds of molded parts have obvious advantages in China!

Injection Molding and Mould making in China are generally much more affordable than in the West (about 50% lower in        China, 30% lower in Taiwan). But of course, the whole process has to be carefully monitored to avoid disappointments.

We will devise the appropriate tooling and mould making strategy for you. We have different ways for a complex small product and large tools and moulds. If you need to have real molded parts in hand within 2 weeks. Our prototyping team services have very cost-competitive.

Does injection molding cost expensive in china?

Compared to the cost of injection molds, injection molding products can easily become the cheapest part of the project. And can significantly reduce the cost of running a small part. The main factors affecting the cost of injection molding products are the material. And the structure of the parts, the number of parts produced.

Plastic Tooling for local injection molding or Export

If your company wants the lower tooling prices, but still needs the flexibility of injection moulding at home we can ship you the moulds. Built according to the specifications of your injection machines. Overall costs (tooling, parts & shipping) are generally about 30% lower when we do the plastic injection moulding in outside as well.

Let us re-engineer your parts for lower injection molding costs

In our product design process, we use our principles allow us to make design decisions based on actual manufacturing methods and costs. Which of course leads to more realistic decisions and better cost optimization than applying them when the design is already frozen. Our engineers strictly supervise any redesign effort to make sure that the final part still meets Western aesthetic expectations.
We also have a lot of experience in the overmolding process, the production cost is only 30% in the United States

Saving next project injection molding cost from material first

Plastic material selection is another consideration to determine the cost of plastic
injection molds. For example, any poly-carbonate fiber and nylon plastic products
are prone to daily mold wear. The designer must choose the use of hardened tool steel
mold for injection molding.

The liquid cavity of plastic materials, often pays great attention to mold maintenance
after use, because this kind of material will have a strong corrosion effect on the
mold surface, if not properly handled, in future production you will face a lot
of unexpected problems. So your cost is not reduced but increased

precision injection molding parts

 

precision injection molding parts

• High Precision part
• Low/high volume
• +/- 0.05 tolerance control
• Electrical Industry
• Product description: Injection molding parts manufacturing in China plastic molding company

The advantage of CNMOULDING is that it can process ultra-high-precision engineering plastics or super engineering plastics parts in the industry by open-mold injection molding, so as to help industrial customers develop high-value-added products.

Advantages of using plastic instead of metal:

low cost

Lightweight

High performance (heat resistance, wear resistance, easy sliding characteristics)

In the enterprise, from trial production to mold opening injection, we have a complete set of solutions to meet your special needs.

Die/die opening technology

We have very rich experience and unique technology in designing and manufacturing molds for high-precision injection products. We have developed a set of the most perfect process plan by focusing on the manufacturing technology of high-precision injection molds.

Industrial field

We have already had successful cases in many industrial fields, such as automobiles, office automation, pharmaceuticals, medical treatment, and communication equipment. If your company is considering the development of high-performance plastic products, please feel free to contact us.

Injection technology

Our injection molding technology is based on JIS level 1 and JGMA level 0 for mass production. Our precision processing technology on super engineering plastics can add higher added value to your processing flow.

Material field

We provide a full range of support in the selection of materials and qualified specifications.

High-performance engineering plastics

PI, PEEk, PES, PPS, PAI, etc.

General engineering plastics

POM, PET, PBT, PC, LCP, PA, etc.

Our original injection molding technology can meet the different needs of new materials and composite materials.

As an expert in the field of ultra-precision injection molding, we challenge high-difficulty processing.

Injection Molding in China

At CN-moulding company. We use the last technology to produce high-quality custom plastic molded products for medicine, automotive, machining, consumer, and Precision Electronics products.

Precision Injection molding parts in China. It is a common and economical way for a variety of companies to get real injection molded parts guarantee, Due to initial pilot production and volume production. Mold manufacturer CN-moulding has an improvement process. Our unique system allows us to put a portion of the three-dimensional CAD model into a full-featured. This system provides us with other Chinese plastic injection molding company's leading-edge because it ensures us the fastest time at an affordable price to our customers the perfect injection molded products.

 

Injection molding in China. The customer is no need to worry about the cost of production and design costs for functional testing and the actual product. Whether it is simply part of the five samples or larger production volume, injection molding, or injection molding company. As we have as many places as you need. Our lifetime warranty Die life assurance part of the mold with the CN-moulding unlimited amount of items.

 

Reference production of high yield steel mold reliability by injection molding. Die used to produce fully rely on the production of functional parts until the tool steel is available. When the yield is moderate, the company relies on injection molding or injection molding companies. Such as CN-moulding mold injection molding in China will provide a complete, cost-effective manufacturing solution.

Precision injection mold characteristics

 Plastic mold production with the general production of mechanical products in common, while its particularity. Compared with the general machinery manufacturing, mold manufacturing is usually more difficult, especially for precision molds. As special process equipment, Precision injection mold production and process mainly in the following aspects of the characteristics.

1. Precision mold manufacturing quality requirements,

Not only requires high precision machining, but also a good quality processing surface. In general, the manufacturing parts of the mold part of the manufacturing tolerances should be controlled within ± 0.011mm, and some even require in the micron range, the mold surface defects after processing requirements are very strict, and the working part of the surface roughness requirements Ra <0.8 Um. 

2. Complex shape

The working parts of precision molds are generally two-dimensional or three-dimensional complex surface (especially cavity mold),
rather than the general machining of simple geometric profiles. 

3. Process complex

Mold production for the single, multi-species production of each mold can only produce a specific
shape, size, and accuracy of the pieces. In the manufacturing process as far as possible the use of general machine tools, general tools, and
instruments, as much as possible to reduce the number of special tools used. In the manufacturing process requires a relatively centralized
process to ensure that the mold processing quality and accuracy, simplify management and reduce the process turnaround time. 

4. High hardness of the material

Plastic mold is actually a mechanical processing tool, the hardness requirements are higher, are generally quenched alloy tool steel or carbide
and other materials, if the traditional mechanical processing methods are often more difficult, so the mold processing The method is different from the general machining. 

5. Short production cycle

  As the product upgrading and market, competition is becoming increasingly fierce, requiring mold production cycle is getting shorter
and shorter. Mold production management, design and process work should be adapted to this requirement, to improve the mold design,
manufacture, and standardization, in order to shorten the manufacturing cycle. 

6. Complete production

When a part of the need for multiple mold processing, the former mold made of the product in the
back of the blank mold, mold parts of the implicated in each other, only the final product qualified,
some of the molds are considered qualified. This feature must be taken into account in the production and planning of molds.  

China Injection Mould Making Companies Development Inevitable Trends

 At present, the injection mould in the mould industry accounted for about 30% of the import and export proportion up to 50 to 70%. In recent years, China’s rapid development of injection mould. With the growing use of plastic products for plastic moulds to provide a very broad market. So that the overall trend of the mold market steady upward.

It is expected that in the future mould market. The development of plastic moulds will be higher than other kinds molds in the mould industry will gradually increase the proportion.

Another way to understand the meaning of the article is that the benefits injection molding will instead of other processing methods .

And which plastic mould processing technology generally presents the following trends:

1, Precision mould making manufacturer is an inevitable trend

The mould precision will be higher and higher. 10 years ago, the precision molds are generally 5 microns, has now reached 2-3 microns, 1 micron precision injection moulds will also be listed. At the same time, so-called precision mould making is the mould development process and manufacturing results in terms of concrete manifestations. Stamping process and mould structure design rationalization, high precision molds, mould products, high reliability. And technical management Tightness. Precision mould manufacturing is not a single technology. But also the designing, processing, and management of a comprehensive reflection of technology. To realize precision mould manufacturing, in addition, to rely on technical excellence, it will also be strict management to ensure.

2, Scientific management and information technology is the injection mould enterprise development direction

Another important aspect of injection mould technology development is scientific management and information technology. China injection mould making companies use scientific management continue to just-in-time manufacturing and lean production direction, enterprise management more accurate. A substantial increase in productivity, ineffective institutions, links, and personnel streamlined.

3, Mould (Mold) is becoming larger and larger

Injection mould forming parts size and high productivity parts are increasing, requiring a multi-cavity, resulting in increasing the mold size, large mould tonnage up to 100 tons. A few hundreds of cavities, several thousand cavities, require mold processing equipment Table. Increase the y-axis z-axis travel, large load-bearing, high strength, high consistency. The fine processing of the mold makes the processing equipment more complex and more interesting. High-speed milling with the processing of high hardness materials, processing a smooth, cutting force is small. The workpiece temperature, deformation, and many other mold enterprise’s advantages to paying more attention to high-speed processing.

4, Multi-functional composite mold will be further developed.

Mould processing die steel material hardness is high, requires mould processing equipment with thermal stability, high reliability. For the complex cavity and multi-functional composite mould, with the workpiece complexity shape, we must improve the mold design and manufacturing level, a variety of trenches, a variety of materials in a set of moulds or assembled into multi-functional composite components Mould, requires a large number of processing program, with a high hole integrated cutting capacity and high stability, improve the processing difficulty.

5. High dynamic accuracy.

Mould machine has a static performance in the mould three-dimensional surface processing, can not reflect the actual processing situation. The high precision machining of the three-dimensional surface of the mould is proposed. The high precision is also realized in the high rigidity, thermal stability, high reliability, and high quality machine control system

Now you can make the decision to start your new project, But if you a newer and to buy mould and plastic injection molding from China company

No problem, next step you have to learn how you choose an injection molding supplier, refer to our article for “select your plastic injection molding supplier with 6 reasons“!

Why precision injection molding is difficult?

 

Why precision injection molding is difficult?

 

Precision injection molding is challenging due to several factors that require meticulous control and optimization. Here are the key reasons:

1. Tight Tolerances

Precision molding demands extremely tight dimensional tolerances, often in the micrometer range. Achieving this requires precise control over every aspect of the process, including material behavior, mold design, and machine operation.

 2. Material Variability

Plastic materials can exhibit variations in properties such as shrinkage, viscosity, and thermal stability. Even small inconsistencies in material composition or moisture content can affect the final product's dimensions and quality.

3. Mold Design and Manufacturing

The mold must be designed and machined with high precision to ensure accurate part dimensions. Any imperfections in the mold, such as uneven cooling channels or misaligned components, can lead to defects in the molded parts.

4. Process Control

Precision molding requires precise control over process parameters such as temperature, pressure, injection speed, and cooling time. Even minor deviations can result in defects like warping, sink marks, or incomplete filling.

5. Thermal Management

- Controlling the temperature of the mold and the molten plastic is critical. Uneven cooling can cause warping or residual stresses, while excessive heat can degrade the material or cause flash.

6. Part Complexity

Complex geometries with thin walls, intricate features, or tight corners are harder to mold precisely. Ensuring uniform material flow and cooling in such parts is challenging.

7. Tooling Wear and Maintenance

Over time, molds can wear out, leading to dimensional inaccuracies. Regular maintenance and monitoring are required to ensure consistent quality.

8. Environmental Factors

Variations in ambient temperature and humidity can affect the molding process and material behavior, making it harder to maintain consistency.

9. Material Shrinkage

Different materials shrink at different rates as they cool. Predicting and compensating for shrinkage accurately is essential but difficult, especially for high-precision parts.

10. Quality Assurance

Ensuring consistent quality across large production runs requires rigorous inspection and testing, which can be time-consuming and costly.

Solutions to Overcome Challenges:

Advanced Mold Design: Use high-precision machining and simulation tools to optimize mold design.
Process Monitoring: Implement real-time monitoring and feedback systems to control process parameters.
Material Selection: Choose materials with consistent properties and low shrinkage rates.
Automation: Use automated systems to reduce human error and improve consistency.
Regular Maintenance: Maintain molds and equipment to prevent wear-related issues.

By addressing these challenges through careful planning, advanced technology, and rigorous quality control, precision injection molding can be successfully achieved.