Cost of customized injection mold

 

Cost of customized injection mold

Injection molding is the most common method of production, with some commonly made injection molded items including computer components to outdoor furniture.

Injection molding is a manufacturing process for producing plastic injection molds from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity by a reciprocating screw or a ram injector. Where the injection molded part cools and hardens to the configuration of the mold cavity. After a part is designed, usually by an industrial designer or an engineer, molds are then manufactured by an injection mold company. Where it is assigned to a mold maker (or toolmaker). Injection molds are usually constructed using either steel or aluminum. And precision-machined to form the features of the desired parts. Injection molding is widely used for manufacturing a variety of parts. From the smallest component to the entire body panels of cars. Injection molding is the most common method of production, with some commonly made injection molded items including computer components to outdoor furniture.

One of the most common questions we receive from customers is how much a custom plastic injection mold will cost. The truth is, there is no easy way to determine exactly what mold will cost without the specific product details. The price of injection molding is based on several interplaying factors. However, we’ll break down each of those factors to give you a better idea of what influences the cost of an injection mold.

 

 

[caption id="attachment_2237" align="alignnone" width="653"] Cost of customized injection mold[/caption]

How do control mold manufacturing cost costs？

First, we should choose the steel and manufacture process based on customer requirements.
After choosing the material, we should make a plastic molding company simple draft, then we will get the mold size and weight.
Manufacture cost, the manufacturing cost is 1.5-3 times of material cost based on complexity.
Every mold should consider racist cost, it normally is 10% of the mold price.
The tax depends on local policy.
The design fee normally is 10% of the total mold cost.
The trial fee is 3-5% china injection molding of the total mold price.

The way of injection mould price calculation

Mold price=steel cost+design fee+manufacture cost+profit+tax+trial cost+package and transport fee
The proportion
Material cost: steel and standard injection molding china spare part take 15%-30% mold price
Manufacture and profit: normally 30-50% of mold cost
Design fee:10-15% of mold cost
Trial fee: within 3% for big size mold,5% for a small mold
Package and transport: real cost or 3% mold price
VAT: 5%-17% of mold price

Mold control

To ensure the cost of the mold, cost control, and quality. And delivery is proportional to the relationship between the quality of the mold to do a one-time. Few changes, delivery to shorten, so that low manufacturing costs, earn high profits. A market order to undertake the process of unique competitive advantage. On the contrary, enterprises not only have no advantage but also will not make money or even lose money. Therefore, mold manufacturing costs and production management in the control part are very important, from the following aspects.

 

Many factors play a role in the ultimate cost of a plastic injection mold. Some of these factors include:

Tolerances

No part can be reproduced absolutely perfectly, but with proper machining, they can come close. However, as tolerances become tighter, the costs rise. Parts with relatively loose tolerances. As exterior plastics and single-piece parts are cheaper to design and produce than parts with very tight tolerances.

Mold and Cavity Complexity

The more complex the mold, the more machining, finishing, and maintenance are required. Because of this, the cost of a mold necessarily increases with its complexity. In many cases. It is more economical to design several simple molds that work together to create one piece, rather than designing a single, more complex mold.

Number of Cavities

Along with the complexity of mold cavities, you must also consider the number of cavities needed. At MDI. We recommend each mold be designed for a single part, rather than creating molds to produce multiple parts at once.

Mold Material

The first factor that influences injection mold cost is the material of the mold itself. Molds can be made of many materials to suit different needs, including standard and stainless steel, aluminum, and beryllium-copper alloys.

Every material has its own unique properties that make it more appropriate for certain types of applications. Steel, for instance, is more durable and long-lived. But also harder for the machine. Aluminum can be easily machined to very tight tolerances but doesn’t last through as many injection cycles.

Mold Base

The mold base is the larger piece that holds the separate mold cavities and other parts together in a single unit. Most mold bases are designed from standard units and then machined to your particular specifications. The number of cavities, the material of the mold and the base, and the size of the base will all play a role in the ultimate cost of the mold.

Gate Type and Placement

Gates are the points at which plastic resin is injected into the mold. There are many different types of gates available, including edge gates, hot tip gates, and sub-gates. Different types of gates are suited for different part designs. You will also need to consider the gate placement during the design phase to reduce part stress and ensure fast, even injection.

Part Material (Resin)

The material you choose for your part manufacturing will affect the design of your mold. Different resins, such as acrylic, polycarbonate, polyurethane, or PVC, require different wall thicknesses and gate and ejector pin placement to ensure optimum performance. These design considerations affect the ultimate cost of your mold.

Part Texturing

Texturing is an aspect of mold and cavity complexity. Plastic parts can be molded with a huge range of textures, but designing and machining the texture in the mold is an important consideration in the eventual cost.

Ejector Pin Number and Placement

Another design consideration for your injection mold is the ejector pins. Different pin sizes, numbers, and placements can impact your part in different ways. In general, your mold should be designed so the ejector pins minimize the stress your part encounters during ejection.

Manual Labor

Despite advances in computer drafting and automated CNC machining, manual labor still plays a role in your mold’s design. Your mold may need hand machining or finishing, or it could require several design iterations to ensure quality.

Why Choose Custom Plastic Injection Molds?

With all of these considerations, custom plastic injection molding might seem like a huge and complicated expense. However, custom injection molding does have many advantages that help offset these costs:

Part Accuracy

Only injection molding offers a high level of accurate reproducibility for large numbers of plastic parts. Other manufacturing methods can’t match injection molding for creating large numbers of parts quickly and with precision.

Durability

One well-made injection mold can create many thousands of parts over the years of use. Other methods may be better suited for short production runs, but injection molding is the most cost-effective option for long runs.

Production Speed

Injection mold manufacturing is one of the fastest ways to reproduce large numbers of highly accurate parts. Other manufacturing methods can create parts with similar tolerances, but not at nearly the same rate as injection molding.

To get an accurate quote on the cost of your own custom injection mold, reach out to a professional manufacturer with the knowledge and skills to give you exactly what you need. An experienced project manager will ensure all your requirements and needs are incorporated into your design from the outset.

 

Chinese injection mold factory

 

China injection mold factory

Were you able to find a good source for plastic injection molds? You may find out there are very
few Chinese manufacturers that could satisfy your companies needs. We are a Chinese company with our own tooling factory in shanghai china. We build very precise and high-quality plastic injection molds exclusively for companies from the US, Canada, UK, Germany, Italy, etc. China Mold Maker We have very good equipment including high-speed CNC, mirror EDM, slow wire cut, CMM, etc. Our mold engineers are good at English and mold technologies, so our company is easy to communicate with. Feel free to let us know if you are finding a China injection mold factory

Continued growth in demand for plastic injection mold

The mold industry is an important part of the manufacturing industry and has broad market prospects. At present annual output value of mold around the world about 75 billion US dollars, China’s annual production value of mold around $ 4 billion, it is estimated that by 2025 China’s mold production value will reach 56 billion yuan. Currently, 30% of the general mold of China, more than half of high-grade mold is also dependent on imports (which account for a large proportion of injection molding). Thus, the mold (in particular injection molds) manufacturing behind to some extent has become a blockade of China’s manufacturing development bottleneck. Development and introduction of advanced manufacturing technology are changing our injection mold manufacturing lagging behind market demand and an important way of rapid growth.  Rich experience in injection mold 

multiple-cavity custom 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.  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).              

 Choose injection mold manufacturers

1, Will increase the cost of your mold costs, the cost increased; How to control costs？ 

2, Is the mold factory in the outward process of repeated communication. And coordination of the transfer of the workpiece takes time, will increase the molding cycle. Very likely to cause mold and product delays, although the purchase agreement or the contract will indicate the relevant terms of the delay penalty. But in the event of tardiness, fines and can not make up for the reality of the enterprise and long-term losses. 

The true cost of injection mold in China

 Feel that many companies who are doing injection mold tooling overseas for the first time do not understand the total cost of sourcing molds from China. They see the very competitive price and delivery but do not see the entire picture.

If they need to send a plastic injection mold tooling engineer over there at any point – how much does that cost?

If the plastic injection mold is going to be run in the U.S. then it will need to be shipped after the first article parts are approved. How much does it cost to delay full production while the plastic injection mold is in transit?  

Precision injection mold manufacturing characteristics and requirements

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

Troubleshooting for PC plastic molded parts

 

Focus on Polycarbonate Project success

We are very honored, for a Polycarbonate molded parts project between China and US injection mold company. We become the winner.

There is an American medical company needs 1 set of high precision injection molding part, the part we are going to mold is made in PC raw resin, also called Polycarbonate. Although the transparent plastics piece is our strength, in the actual production process, some problems. Our experts cost time and solve it finally, it should be we can learn and share.

Here’s a simple idea about the injection mold for PC medical products.

 

 

Deep Injection Molding Manufacturing Expertise

As you can see the transparent body is a hook surface.  The product surface needs to be transparent and no rod traces and dirty marks. We need to ensure that the plastic products will not stick in the side of the cavity during the injection molding process. So it is necessary to use a slider block structure. Because the customer needs all the wall thickness must be uniform, then the light reflection is the same. Look at the pictures and videos can know, for an elliptic shape, the problem is difficult to solve.

 

Another problem is the bubble inside, the product safety reason, customer have to design and make the wall thickness reaches 5 MM, PC accessories will have some bubbles, from the picture you are hard to find, but the actual existence, made a bubble in the PC material parts get cooling and sealing the door quickly,  there are some defects on the surface is easy to produce because of big thickness, to do the right thing, there are a few things you might want to check if the resin completely drying, a suitable mold temperature, injection speed, using multi-point hot runner feeding, etc. here is the final approved sample to see the clean off, there is no bubble at all!

 

“INCREASE YOUR COMPANY PROFIT WITHOUT SACRIFICING QUALITY “

Trusty Tooling & Mold Making, China Supplier– CNMOULDING.COM

Mold making in China is generally much more affordable than in the West .Cnmoulding.com will devise the appropriate tool and mold-making strategy for you.

China plastic injection molding and injection moulds will save your company 50% to 70% of the cost of U.S. Manufactured molds and we will produce them in half the time it takes to produce the same mold in the U.S.

Manufacture your injection molded products and injection molding with us in China. Send us your 3D solid model CAD drawings or sample or even only your idea. And we will provide you with the absolute lowest price for injection molds as well as your injection molded products with quality standards meeting or exceeding your expectations.

 

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.