1、China Mould maker design control 2、China Mold Maker steel certificated 3、China mould makers steel hardness inspection 4、China mould companyelectrodes inspection 5、China Mould manufacturer core and cavity steel dimension inspection 6、China mold makers pre-assembly inspection 7、China mould making trial report and samples inspection 8、China mold making pre-shipment final inspection 9、Export mould package inspection
CN-moulding is a professional china mould maker which is engaged in plastic injection
Our company focus on mold making and stamping die making for over 16 years. With advanced in-house machines and professional workers, we can achieve your satisfaction by supplying you with both qualities high precision injection mold ((+/- 0.02mm) and large injection mold (2200mm),.Our injection molds are widely used in toys and games, electrical appliances, automotive, industrial parts, and other molding goods. We usually exported our molds to Europe, America, Asia, and other regions. High quality, reasonable price, and on-time delivery have earned us a good reputation in our customers.
We can provide a competitive price and better service for you, helping you win more orders, to prove our sincerity and capability. We can make one or two molds for you without charging any profit until you think we are able to meet your requirements, we then start a cooperation relationship.
In China, overmolding service is one kind of customer plastic injection molding type
Overmolding is a kind of special and universal precision plastic injection molding process, a kind of soft material is formed on another kind of hard material. Why this process is special because if you can not choose the right material, it is difficult to combine the two materials in chemical and Mechanical.
No long working experience, and the injection mold making team, can not guarantee the production of life into a finished product Many new arrivals China mold manufacturer beginning despises the result is, mold development failure, serious consequences of the customer project period, then the loss of customers. Why said that the general, injection molding cheaper than comparable manufacturing, of course, become the first choice of many product designers.
Do this kind of mold to pay attention to the following items, the project development early material selection is very important: these two kinds of plastic need not be the same but must be compatible For example, if you find that the second material will melt or distort the first material during the trial, it is certain that your material selection is wrong.
We have mastered the high-performance overmolding technology, including the following:
Cnmoulding development of overmolded products by combining the unique properties of our rubber-like plastic Polylastomer? components with our many years of experience producing insert molded products. One of our first over-molded products was developed for a leading medical manufacturer. Today we have manufactured a lot of overmolded parts. Many of our customers produce consumer-oriented products.Cnmoulding Plastics’ overmolding technology adds value to their products and adds consumer appeal.
In pioneering the process, we have worked closely with resin manufacturers to develop materials that bond in the overmolding process. Many products use Polypropylene as the substrate to bond with TPE, TPR, SILICON Rubber-type materials. Today there are elastomeric materials that will bond to Nylon and ABS substrates, as well. This gives designers more options in developing overmolded parts.
Our overmolding technology allows designers and engineers to create a strong structural product with excellent ergonomic comfort for the end-user. Overmolded parts can add further appeal by being molded in two different colors.
We would like to share our overmolding experience with you. Contact us with your needs. We will promptly help you develop high-quality, economical, successful overmolded components that will assist you in selling your product.
overmolding for 2 color product with 2 kinds of material (hard and soft material) in one product
Regularly scheduled tool maintenance.
Use of logically balanced runners.
Use of quick mold change systems.
Mold design practices that allow for future flexibility in production.
China has become a major player in the global automotive industry. With the rise of domestic automakers and the increasing demand for cars, China has also become a leading manufacturer of auto parts, including molds. In this post, we will provide an overview of China's auto mold industry and its current state.
China's auto mold industry has been growing rapidly in recent years. According to a report by Research and Markets, the market for auto molds in China is expected to reach $4.5 billion by 2022, with a CAGR of 6.2% from 2017 to 2022. The growth of the industry is driven by several factors, including the increasing demand for cars, the rise of domestic automakers, and the government's support for the industry.
China Auto Mould
China auto mold industry is highly competitive, with many local and international players. The industry is dominated by a few large companies, such as FAW Group, Dongfeng Motor Corporation, and Shanghai Automotive Industry Corporation. These companies have a significant presence in the global market and have established partnerships with major automakers.
The quality of China's auto molds has also improved significantly in recent years. Many Chinese companies have invested in technology and equipment to improve their production processes and ensure high-quality products. Additionally, the government has implemented strict quality standards and regulations to ensure that products meet international standards.
Despite the growth and improvements in China's auto mold industry, there are still some challenges that need to be addressed. One of the major challenges is intellectual property rights (IPR) protection. Many Chinese companies have been accused of stealing designs and technology from foreign companies, which has led to legal disputes and trade tensions.
Another challenge is the environmental impact of the industry. The production of molds requires a significant amount of energy and resources, which can have a negative impact on the environment. The Chinese government has implemented regulations to address this issue, but more needs to be done to ensure sustainable production practices.
In conclusion, China's auto mold industry is a rapidly growing and highly competitive market. The industry has made significant improvements in quality and technology, but there are still challenges that need to be addressed. As demand for cars continues to rise, China's auto mold industry will play an increasingly important role in the global automotive industry.
CNMOULDING is a professional plastic mold manufacturer in China
As a full-service contract plastic mold manufacturer in China, we can provide turnkey solutions for your plastic product manufacturing needs. From product design support through order fulfillment and distribution, PMP offers our clientele a multitude of services. including:
Product Design Support
High Quality Made Tooling in china
Insert & Over-Molding in china
In-Mold Decorating, Pad Printing & Plating
Product Design
A plastic mold manufacturer in China will assist your engineering team in optimizing your product design to aid in its manufacturability, strength, and quality. High Quality Made Tooling in China. From Single cavity and double Inserts to Multi-cavity Hot Runner Molds, Precision Molded Plastics contributes to the GDP of China.
We do not outsource from another supplier. Molded-in mechanical fasteners or highly conductive electronic connectors, Plastic mold manufacturer china will be molded Plastics provides technical service solutions to exceed your every need.
Value-Added Services of plastic mold manufacturer china
In-mold decorating, labeling, pad printing, or chrome plating; Plastic mold manufacturer china possesses the skills and resources to handle any of your product's secondary needs. Secondary Operations Machining Operations and/or hardware installation; We'll build your sub-assemblies and ship them ready for integration into the final product.Complete Assemblies Injection molding, product assembly, retail packaging& distribution, Plastic mold manufacturer in china provides turn-key contract manufacturing fulfillment services.
We work closely with our customers assessing both short and long term requirements. If you require china overmolding, china insert molding, or china two-shot molding, Plastic mold manufacturer china has the experience to create the tooling and molding processes to get your job done right. Material properties and plastic technology are very important when developing precision injection molded parts. When your part has to meet the specific regulations of your industry, having the right material is essential. The correct storage, handling, drying, and processing of today’s highly engineered resins is critical to the production of precision molded parts. Plastic injection molders in china. we pay attention to all aspects of the molding process, from tooling and material to machine and processing
How to choose a plastic injection mold manufacturer
mold making company is very popular with everyone's attention at the moment, it is not particularly suitable for direct production of some products that can be made of plastic models, produced under a single customer after making the decision, both for the convenience and efficiency is high, so are as many customers, so if you choose plastic mold manufacturers to cooperate, in the end how to choose?
Select plastic mold manufacturers to cooperate, then there are a few caveats if you can pay attention to the good, then you can find the best manufacturers of cooperation, the first thing to note is that the manufacturers of credibility, if appeared before manufacturers specified when not completed within the time, then we better take account of, or the customer may not see the model when they took it out.
Choose plastic mold manufacturers also need to pay attention is sure to look at how manufacturers of equipment, is now the model-making equipment is also in constant update them, 3D printers can also be said to be very common, if the manufacturer of the device relatively aging words may be made out of many models have some defects
First important, we own 8 CNC machines, 6 wire cutters, 8 milling machines, 6 EDM machines, and outside good supply chain allows our experienced mold makers to meet compressed lead times while maintaining our reputation for quality injection molding making.From single cavity & prototype injection molding making to multi-cavity and family injection molding making.
Mold maker in china is fully equipped to meet your unique tooling challenges
Our mold making shop is geared to work with injection molds from the small to medium to big size range, i.e. injection mold makers that are designed to run in presses of 800 tons and smaller. China mold makers work with a variety of plastic injection molding making configurations and a summary of available options can be found here Mold Types:
Injection mold designing, injection molding making, and specialty tooling have been the backbone of our business since our inception in 2002. We apply our decade of expertise in producing precision injection mold. We are particularly adept at tooling for Automotive, Printer, Electronic precision, and. Medical Connector Parts.
mold making company
china mould maker, china mold making, china mold makers, mold makers in china above 4 hot tag usually for customer search/find good mold manufacturer in china.
Cn-moulding means Plastic Injection Molding manufacturers in China
Description of Injection Molds
Product Name: Plastic injection mold Mold core&cavity steel: NAK 80, 718, P20,H13,2344, etc. Mold base: LKM, HASCO, DME, etc. Mold life: 200k-1 million shots Packaging: Wooden case Delivery time: 25-60 days.
Our factory has five sets of CNC machining centers. Up to 30,000 rpm spindle machining centers. P. M. speed CNC machining centers. 9 to CNC EDM machines and 5 WEDM. CMM has the function of reverse scan data to ensure mold production in a timely, effective, and accurate completion of the process design. It can produce pulled stamping dies, automotive testing tools, and thermoplastic molding tools. The core of the injection molding shop's annual production capacity of 400 sets of precision injection molds or 800 sets of ordinary medium-sized injection molds our service is a one-stop injection molding manufacturer solutions company for polymer-based products.
We focus on plastics design, plastic injection molding manufacturing, tight tolerance molding, part joining and assembly, and painting, and serve a number of markets including Medical-Diagnostic, Industrial, Electronics, Communication, Consumer, and Automotive. we are always manufacturing highly- demanding and tight-tolerance precision parts for industries such as the automotive, banking, and healthcare industries. And we are able to offer our customers a quick turnaround and high-quality injection molds, prototyping, and plastic injection molding manufacturing services.
Our mold making company's Competitive Advantages:
Electronic Online Experienced Engineer Guarantee within 7 days. International Approvals Military Specifications Quotation 1-day Product Features Product Performance Prompt Delivery Quality. Approvals Reputation Service 24 hours of project Control.
Globe Markets:
Eastern EuropeNorth AmericaMid EastCentral/South AmericaSouth AfricaWestern Europe-Australia Welcome to provide samples or 2D / 3D drawing in step, XMT or IGES 3D drawing type, or AutoCAD and PDF type. We can design and produce the molds need. If you want to compare prices, find a very professional injection mold company's products in China. Please send the information to us you are interested, we will give you a good price report. This will be our big pleasure if we have a chance for your services.
Due to the rapid development of plastic materials and the extensive demand for plastic products, more requirements are put forward for the properties of plastic injection mould steel. Therefore, many developed countries in Europe and America have created a wide range of plastic mold steel series, including carbon steel, Carburizing plastic mold steel, aging hardening plastic mold steel, corrosion-resistant plastic mold steel, free processing plastic mold steel, and permeable plastic mold steel. Maraging plastic mold steel and mirror polishing plastic mold steel, etc.
NAK80 is a 40 HRC pre-Hardened, high-performance, high-precision, mold steel.
Applications include plastic molds, rubber molds, jigs & fixtures, and press dies.
Features:
Machines up to 20 percent faster than HRC 30 P20
Pre-hardened to 38-42 HRC
Uniform microstructure & hardness (40 HRC between surface & interior)
Never needs stress relieving, even after heavy machining
Highly weldable, HAZ gets softer not harder (re-age harden to bring back to 40 HRC)
EDM layer is easy to remove
DAIDO DHA1 – High performance hot-work tool steel JIS SKD61
“SKD-61” is special tool steel, also known as “die steel”! The brand corresponding to our country (GB/T 1299-2000) is 4Cr5MoSi V1, which is the most widely used hot die steel. It can replace the SKD61.SKD61 corresponding to the US standard is H13, Korea is STD61. The chemical composition of SKD61, Japan grade hot work die steel (JIS4404-1983) is as follows:%): C: 0.32n0.42 Si: 0.81.2 Mn: < 0.50 Cr: 4.505.50 Mo: 1.001.50V: 0.80.3P: < 0.03P: < 0.03 heat treatment: air quenching, quenching temperature 10201050 degrees, hardness 5658HRC, heat treatment deformation small, surface nitriding.
5 Classes of mould
According to the length of mould life, molds can be divided into five categories. The number of shots in the first type mould is 1 million or more, the second mold is 500000-1 million times, the third mold is 300000-500000 times, the fourth mold is 100000 times, the fifth level is less than 100000 times, The steel materials required for the first and second grade dies are: they can be hardened and the hardness is about HRC 50, otherwise the mould is easy to wear, which leads to the tolerance of the injection molding products exceeding the standard. Therefore, the selected steel material should have good heat treatment properties and machinability despite its high hardness.
There are, of course, other considerations. Typically, steel options include Sweden 8407 and S 136; USA 420 and H13; Europe 2316, 2344 and 2083; and Japan, SKD 61. For strongly corrosive plastics, steel S 136C 2316 and 420 are usually used. In addition to steel S136H2316 and steel 420, SKD 61Nak 80 / PAK90 and 718M steels can also be used for low corrosion plastics. The appearance of the products also has a great influence on the die materials. The steel materials S136H 2316718 SNAK80 PAK90 and 420 steel are suitable for transparent polishing and mirror polishing products, while the high transparent products should mainly use S136, followed by 420 steel class .3 dies mainly using pre-hardened steel such as S136H, S136H 2316HN718H, and 083H, etc. The hardness is between HB 270 and 340. Type 4 and Class 5 dies are usually made of steel P20718, 738, 6182311, and 2711. For extremely low demand dies, S 50 C and 4 steel can be used, that is, a cavity can be made directly on the mould frame.
Product description: Rich experience producing transparent plastics part mold and part in china. It needs high-quality requests for the injection molding control process.
Clear transparent plastics characteristics: transparent insulation thermoplastic environmental protection plastic products, plastic transparent. After burning the odorless tasteless. It does not produce poisonous gas. Transparent, surface water ripple, crystal point, ones like white, grease, and toughness. And strong resistance, chemical resistance, good resistance to impact strength. Low-temperature resistance to impact strength is also good. Is about 20% higher than the PVC standard). Used for blister, folding boxes, packaging, printing, CARDS, etc.
Transparent insulation use of transparent insulation is used in electronics, printing, packaging, insulation, soft lines. A display screen saver PET, membrane switch, membrane Windows, printing film, puzzle film base, stickers bottom paper, glue. Silicon coating, belt, instrument panel, cable capacitance motor gasket. Insulation stripping, furniture, window film, protective film inkjet printing. And decoration, etc. PC transparent insulation slices are double-sided polishing film, have good pervious to light quality, and high dimensional stability. It can make the required electroplating process and screen printing various textures, decorations, and optical effects for aesthetics.
PC material
PC is a kind of amorphous, odorless, non-toxic. Highly transparent colorless or yellowish thermoplastic engineering plastics. Has excellent physical and mechanical properties.
Especially the excellent impact resistance. High tensile strength, bending strength, compression strength. Creep is small, size stable. Has good heat resistance. And low-temperature resistance. A relatively wide temperature range has stable mechanical properties.
Dimensional stability, electrical properties, and flame retardancy can use for a long time under 60 ~ 120 ℃. No obvious melting point, in 220-230 ℃ in the molten state.
Due to the molecular chain rigidity, resin melt viscosity. Bibulous rate is small, small shrinkage rate, high dimensional accuracy.
Good dimensional stability, membrane permeability is small. Self-extinguishing material. Light is stable. But not resistant to ultraviolet light, good weather ability.
They can withstand oil, acid, alkali resistant, oxidizing acid, and amine, ketone, soluble in chlorinated hydrocarbons. And aromatic solvents, Easy cause hydrolysis and crack in the water for a long time.
The disadvantage is that because of the fatigue strength is poor, prone to stress cracking. The solvent resistance is poor, with poor wear resistance. The product features environmental protection. Flame retardant, impact resistance, high and low-temperature resistance. Good dimensional stability, and good insulation.
Specifications china transparent injection molds making
1. Our clear transparent parts are widely recognized and trusted by users. And can meet continuously developing economic and social needs.
2. A quality hot runner already widely used to reduce cycle times and maintaining the shinning. And clear surfaces during long-time production.
3. We guarantee the mold life and injection mold spare part use /changeable.
4.S7/H13/2344 after heat-treat. The hardness will be up to 52-54 HRC to get longer mold life.NAK80. 718 is also a good choice for transparent clear injection mold making in China.
5. High-quality steel has to be tested and certificated from steel suppliers in accordance with the transparent parts.
Injection Mold Slider Design: Key Principles & Best Practices
Sliders (also called side-action cores or cam mechanisms) are essential mold components used to form undercuts or complex geometries that cannot be released by standard ejection systems. Here’s a comprehensive guide to slider design for injection molds:
1. When to Use Sliders?
Sliders are needed when:
The part has external undercuts (e.g., side holes, hooks, threads).
The part has internal undercuts (e.g., snap fits, internal grooves).
Straight ejection would damage the part.
2. Slider Types & Mechanisms
Type
Description
Application
Angled Pin Slider
Driven by a tapered pin during mold opening.
Simple side undercuts, low-cost.
Hydraulic Slider
Uses a hydraulic cylinder for controlled movement.
Larger angle = Faster movement but higher friction.
Smaller angle = Smoother but slower action.
(2) Guiding & Locking
Wear Plates (hardened steel) reduce friction.
Locking Blocks prevent slider deflection during injection.
(3) Cooling Considerations
Avoid cooling lines near sliding surfaces to prevent warping.
Use baffles/bubblers if cooling is necessary.
(4) Draft Angles
Add 1°–3° draft on slider contact surfaces to ease release.
4. Step-by-Step Slider Design Process
Identify Undercut Location
Check part CAD for undercuts requiring side action.
Choose Slider Type
Angled pin for simple designs; hydraulic for complex motions.
Calculate Travel & Angle
Ensure full undercut clearance without interference.
Design Slider & Core
Use split cores if undercut is deep.
Add Locking & Ejection
Locking blocks + return pins for stability.
Simulate Motion
Check for collisions in mold-opening sequence.
5. Common Slider Defects & Solutions
Issue
Cause
Solution
Slider Sticking
Poor lubrication/wear.
Use self-lubricating materials (e.g., bronze guides).
Part Damage
Insufficient travel/draft.
Increase slider stroke or draft angle.
Flash Formation
Worn locking surfaces.
Replace hardened lock blocks.
6. Advanced Tips
Micro-Sliders: For tiny undercuts (<2mm), use spring-loaded mini-sliders.
Collapsible Cores: For threaded parts, use retractable cores.
3D-Printed Sliders: For prototypes, use metal 3D printing for complex geometries.
Conclusion
A well-designed slider ensures smooth demolding of complex parts while maintaining mold longevity. Prioritize: ✔ Precise travel calculation ✔ Robust locking/guiding ✔ Proper cooling & lubrication
For high-volume production, hydraulic sliders offer better control, while angled pin sliders are cost-effective for simpler molds.
Would you like a specific case study (e.g., automotive part slider design)?
injection mold sliderinjection mold slider design
In conclusion, the design of an injection mold slider is a critical factor in the success of any injection molding process. By carefully considering factors such as material choice, shape, mechanism, placement, and maintenance, it is possible to design a slider that functions correctly and produces high-quality parts. With careful planning and attention to detail, it is possible to create injection molds that deliver excellent results time and time again.
As a professional china injection mold company, we focus on precision mold making manufacturing in china for the complicated slider.
