plastic injection molding knowledge - Page 12 of 41

Principles of Plastic Injection Overmolding Technology

21/12/2022

Secondary injection molding technology In the past 10 years, secondary injection molding technology has completely changed the aesthetic standards, design ideas and functional requirements of consumer goods. Medical device manufacturers also recognize the potential advantages of this technology and continue to expand its application in the medical field. The secondary injection molding technology is famous for creating a “soft surface”, but it also has many other functions, such as ergonomic design, two-color appearance, brand identity

Difference Between Rubber Coated Mold And Two-color Mold

21/12/2022

1. Two color mold: the mold in which two plastic materials are injected on the same injection molding machine and molded in two times, but the product is only molded once. Generally, this molding process is also called double material injection molding, which is usually completed by a set of molds and requires a special two-color injection molding machine. The two-color mold can turn two resins and colors with different characteristics into a single two-color

How To Take Out The Material Head Remaining In The Injection Mouth Of Plastic Injection Mold?

20/12/2022

What are the methods for removing the material head left in the injection port of the plastic injection mold? 1. On the inner side of the injection port of the plastic injection mold, gently tap the tip of a thick copper bar against the injection port material of the injection mold. When you feel a slight movement of the material head, use a thin copper bar to get it out. 2. In order to take

What Are The Golden Rules To Design An Automobile Injection Mold?

20/12/2022

What are the golden rules to design an automobile injection mold? There will be a close correlation between the development planning and manufacturing of automobile injection molds and plastic processing. The success and failure of plastic processing, to a large extent, depend on the mold planning effect and mold manufacturing quality, while the plastic mold planning is based on the correct plastic product planning. What structures should be considered in the planning of plastic molds?

What Should Be Taken Into Consideration When Sourcing Injection Molds?

20/12/2022

What Should Be Taken Into Consideration When Sourcing Injection Molds? In fact, there are several aspects that you must pay attention to when purchasing injection molds. Because different injection molding products are used in different places, if we use them according to the original way, we may cause some damage. Therefore, we must pay attention to the following aspects of purchasing injection molds! What should we do when choosing injection molds? Generally, the purchase

How To Change The Raw Materials Of Two-color Injection Mold?

20/12/2022

The two-color injection mold is also called double material injection molding, which is usually carried out by a set of stamping molds and must be a professional two-color injection molding machine. How many kinds of raw materials must be selected for the two-color injection mold, and the raw materials need to be replaced, so how to replace the raw materials for the two-color injection mold? When the machine and equipment are shut down, the machine

What Should We Do When Making High-precision Injection Molding Thread

20/12/2022

Many injection molding manufacturers will communicate with customers about the problem that the precision of injection molding thread does not meet the standard when making high-precision threads. They are eager to know if there is any way to solve this problem. Because plastic is inferior to metal in terms of strength and stiffness, processing plastic threads by manufacturing metal threads must fail to meet the requirements. The threads of the outer ring of the plastic

When Do We Need Hot Runner In Two-color Mold Manufacturing?

19/12/2022

In two-color mold manufacturing, hot runner is sometimes used. The hot runner mold is a mold that uses a heating device to make the melt in the runner never solidify. Because it has shorter forming cycle than traditional dies and saves more raw materials, hot runner dies are widely used in developed countries and regions in the world. A hot runner system is required for the following situations: Injection molding products with strict quality requirements.

Two-shot Mold Design Guide

19/12/2022

Attention must be paid to in the design of two-color mold 1. Basic principles of two-color injection mold design: (1) Make hard glue once and soft glue twice; (2) Transparent once, non transparent twice; (3) The plastic with high injection molding temperature shall be made once, and the plastic with low molding temperature shall be made twice; 2. The guide pillar and guide sleeve of the mold must be symmetrical from top to bottom, from

Common Tools And Specifications For Mold Polishing

19/12/2022

Common tools and specifications for mold polishing In the process of die manufacturing, the formed parts of the die often need to be polished. Mastering the polishing technology can improve the quality and service life of the mold, and then improve the product quality. Die polishing method and working principle Generally, oilstone strips, wool wheels, sandpaper, etc. are used for mold polishing to make the material surface plastic deformation and remove the protruding

Polishing Process Of Injection Mold

19/12/2022

Polishing process of injection mold (1) Rough throwing The surface after finishing milling, EDM, grinding and other processes can be polished with a rotary surface polishing machine with a speed of 35 000 ～ 40 000 r/min. Then it is manual grinding of oilstone, and the strip oilstone is added with kerosene as lubricant or coolant. The order of use is 180 # → 240 # → 320 # → 400 # → 600 #

Factors Affecting The Surface Polishing Of Die

19/12/2022

Factors Affecting the Surface Polishing of Die (1) Workpiece surface condition In the process of machining, the surface of materials will be damaged due to heat, internal stress or other factors. Improper cutting parameters will affect the polishing effect. The surface after EDM is more difficult to grind than the surface after mechanical processing or heat treatment. Therefore, EDM finishing shall be adopted before the end of EDM, otherwise the surface will form a hardened

Precautions For Shutdown And Restart During Injection Molding

19/12/2022

Precautions for shutdown and restart during injection molding Plastic processing is the general term of various processes that convert synthetic resin or plastic into plastic products, and it is a large production department in the plastic industry. Generally speaking, plastic processing mainly includes multiple processes such as batching, molding, machining, jointing, decoration and assembly. So, when we are processing plastics, if we need to stop and start, what problems should we pay attention to? Now

Today’s Nine Major Trends Of Automobile Die

18/12/2022

Today’s nine major trends of automobile die At present, there are nine major development trends in the global automobile die industry, namely: the CAE effect of the stamping forming process is becoming more prominent, the three-dimensional planning position of the die is stabilized, the digital die technology has become the mainstream direction, the rapid development of die processing automation, the high strength steel sheet stamping technology is the future development direction, the new die commodity

Sharing Experience In Injection Mold Design

18/12/2022

Sharing experience in injection mold design Before design 1. Check the product structure (draft, wall thickness, undercut, mold direction, parting surface direction, gate position) 2. Tonnage, model and type of injection molding machine, inlet diameter of mold gate bushing and diameter of locating ring are used. 3. The size of the ejector pin and the position of the ejector hole, the depth of the injection molding machine into the mold, the size of the mold

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