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Injection Molding
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Several common process of water-assisted injection molding introductionAccording to the design of the injection molding machine and the casting system, the corresponding melt-returning process of water-assisted injection molding can be roughly divided into two types: the...More+
The difference between full shot and short shot of gas-assisted injection moldingGas-assisted injection molding can be divided into short shot and full shot.Short shot The short shot method is shown in picture 1, it is suitable for thick-walled plastic parts with low mold filli...More+
Gas-assisted Injection Molding EquipmentThe gas-assisted equipment includes a gas-assisted control part and a nitrogen generator, it is special and seperate system of the injection molding machine, and its only interface with the injection ...More+
Design Tips of Vacuum Venting MoldThere are some regular venting way which are parting surface venting, insert venting, insert pin venting and well-ventilated steel, but there is a special way is vacumm venting, it will need vacumm ma...More+
Vacuum venting mold design for plastic molded partsThere are some regular venting way which are parting surface venting, insert venting, insert pin venting and well-ventilated steel, but there is a special way is vacumm venting, it will need vacumm ma...More+
Well-ventilated steel of venting design for molded partsWell-ventilated steel is a sintered alloy, iIt is a porous material sintered with spherical particle alloys, the pore size is 7-10μm and the strength is poor, but the texture is loose which allow th...More+
Venting insert design of molded partsIn the thin-walled cavity, the end of the melt flow, the bottom of the blind hole of the mold cavity, the end of the solid column of the plastic part, the bottom of the plastic part rib and screw colu...More+
Venting of parting surfaceThe exhaust slot on the parting surface is easy to clean and processing, also not easy to be blocked, and has a good exhaust effect, it is the main area where the gas is exhausted, so the exhaust from...More+
The design principle of the exhaust slotThe exhaust system of plastic molds is also very important, if the product has air trapping or exhaust system is not suitable will have a big impact on injection molding production and product quality...More+
Banana gate of plastic injection mold runner system designIn order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among ...More+
The sub gate of the plastic injection mold runner systemIn order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among...More+
Pin-point gate of plastic injection mold runner system designIn order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among ...More+
Side gate of plastic injection mold runner system designIn order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among...More+
Key points of plastic injection mold runner systemThe sub-runner is a transitional channel between the main runner and the gate, as the sub-runner is the longgest part of gating system, so it is very important to enhance the parts quality and improve...More+
The main design points of the design of the plastic mold pouring systemThe main runner is the part where the molten plastic first passes when it is sprayed from the injection nozzle, and it is coaxial with the injection nozzle, because of repeated contact and collision w...More+
Plastic injection mold runner system design pointsWhen designing the gating system, Firstly, we should consider making the plastic melt fill the cavity with core side quickly to reduce pressure and heat loss; secondly, it should be economically cons...More+
Plastic part ribs desiginingThe ribs function: The role of ribs is to improve the strength and rigidity of the plastic parts, prevent the plastic parts from being distorted and deformed, and will not cause the appearance of t...More+
Design principles for wall thickness of plastic productsThe principles of wall thickness design for plastic parts are as follows:1. Making the wall thickness even is the first principle of plastic part design, it can make filling, cooling and shrinking eve...More+
What is Plastic Injection Mold?The plastic mold is used for injection molding, it is assembled with cavity, core and side slider together, with ejection system and adjustments to produce plastic products by different shapes and sizes.More+
Five Major Steps of the Injection Mold Production ProcessInjection mold manufacturing can be roughly divided into the following steps:Process analysis of plastic products.More+
USM Blogo OpeningHello everyone! Our blog is open today, it is very glad to have the opportunity to meet you here, welcome to visit us whenever you need.More+
Insert pin of vengting design for molded partsInsert pin of venting:It is difficult to make exhaust slot when end runner is not in parting surface during injection, and there is no matching gap available, but we could make the venting pin at end ...More+
Parting surface venting of runner systemThere are a large amount of gas in the main and sub channel, these gas are discharged through the pull rod (push rod) during injection processing, a part of gas come out from exhaust slot on parting s...More+
Design standard of exhaust slotThe exhaust system should ensure that the gas in the cavity is smoothly discharged, and also prevent the material from entering and exhausting channels from causing flashing of the product or blockage...More+
The air trapping position in cavity and exhaust methodThe air trapping in cavity is usually in the following places:1. Thin-wall structure cavity, the end of melt flow;2. The junction of two or more melts;3. The last area where the melt in the cavity rea...More+
The main reasons for air trapping of plastic injecton moldDuring the injection molding process, the front end of the slight ribs may be air trapped and plastic burnt, and also cause the molded part may become black and carbonized.The mechanism of air trapped...More+
Reasons for making the exhaust system of the injection moldThe gas in the injection mold includes not only the air in the cavity, but also the air in the gate and the decomposition gas generated by the plastic melt, and the steam which caused by plastic in hi...More+
Conformal cooing channel of plastic injection moldThe conformal cooling gate is a new type of mold cooling gate based on 3D printing technolog, because of its processing characteristics, the conformal cooling gate can fit the shape of the product wel...More+
Different treatment of plastic injection mold cooling system principlesDifferent treatment principle:1. The mold temperature is different according to the different plastics, when the plastic requires the molding temperature of the mold to be ≥80°C, the mold must be he...More+
The principle of mold temperature balance in plastic mold cooling system designThe principle of mold temperature balance:1. Due to the complexity of the plastic parts and mold structure, it is difficult to make the temperature of the mold completely consistent, but should be mak...More+
Plastic injection mold common cooling gate1. Straight-through cooling water gate: the straight-through cooling gate is the most commonly used gate for plastic injection mold, and it is also the most convenient type of cooling for processing. ...More+
Controling method of plastic injection mold temperatureExcept for heat radiation and heat convection from the mold, most of the heat bring into the mold by the plastic needs to be taken out of the mold by the circulating heat transfer medium by heat condu...More+
Plastic injection mold cooling system design noticeDesign notice of designing the cooling system:1. Normal molds can be quickly cooled to obtain a shorter molding cycle, and precision molds can be slowly cooled with a mold temperature thermometer;2. U...More+
Design principle of plastic injection mold cooling systemDesign principle of cooling systemIn order to improve the efficiency of the cooling system and make the cavity surface temperature distribution even, the following principles should be followed in the...More+
Plastic cooling factors by injection parameter1. Plastic parts design: mainly for the wall thickness of plastic products. The thicker thickness of the product, the longer the cooling time. Generally speaking, the cooling time is approximately pro...More+
Factors affecting the cooling rate of parts by injection moldingIt should be shaped by cooling to get stable plastic part after plastic filling the cavity and core side, so most injection molds need to be equipped with cooling devices to make the mold temperature ...More+
Direct gate of plastic injection mold runner system designIn order to get the best injection quality, the gate type must be selected carefully, the coommon gate tyeps are: direct gate, side gate, pin-point gate, sub gate,valve gate of hot runner etc. Among ...More+
Gate position determination of plastic injection mold runner design systemIn the selection of gate location, the following issues should be paid attention to:1. The gate position should be set at the maximum wall thickness of the plastic part, so that the plastic melt flows...More+
Parallel barrel 2K injectionWhat is parallel barrel (2K) two-shot injection molding? What is 2K injection molding? Let’s see the what is called parallel barrel 2K injection molding. The injection molding machine used for...More+
Plastic injection mold runner system designThe gate is the connecting part between the runner and the cavity, and is also the end part of the injection mold gating system, the molten plastic enters the cavity and core side through the gate dir...More+
Hydraulic diameter conversion of runners in plastic mold gating system designHydraulic diameter refers to 4 times the ratio of the flow cross-sectional area to the perimeter, as the wall shear stress of non-circular pipes is not even distributed along the surrounding walls, on...More+
Design principles of plastic injection mold runner system1. Quality first The design of the gating system has a big influence on part quality, firstly the gate should be set at the easiest part of the plastic part to be removed, and at the same time, the...More+
What is Ejection Molding?The process to get injection molded products is called injection molding, or called injection. Injection molding is an important method in polymer molding processing, it is characterized by a short molding cycle and high production efficiency.More+
Video of Dongguan international machine tool exhibition in 2021USM (UNIQUE SOLUTIONS MOLD LIMITED) was founded in 2012 and is located in Dongguan City, Guangdong Province, a famous mould manufacturing province in China.More+
Unique Solutions Mold ProfileUSM (UNIQUE SOLUTIONS MOLD LIMITED) was founded in 2012 and is located in Dongguan City, Guangdong Province, a famous mold manufacturing province in China, the plant covers an area of 3500 square meters.More+
Slider designing tips 11. After the slider core pulls out, the length of staying in the guide pin slot should not be less than 2/3 of the total length of the slider, for special cases, the slider slot can be partially lengt...More+
Slider of side core pulling mechanisum assemblingThe picture 1 shows a typical guide pin driven slider parting and core-pulling mechanism, we will talk about the composition and function of the lateral core-pulling mechanism.1. Lateral forming parts...More+
Classification of side parting and core pulling mechanismAccording to the structural characteristics, the side core-pulling mechanisms are divided into the following six categories:1. The side core-pulling mechanism of "slider + guide pin";2. The ...More+
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What is the side parting and core pulling mechanisms with their function?When there are holes, cavities or cores on the inside or outside of the injection-molded plastic parts that are different from the opening and closing directions of the mold, the plastic parts cannot...More+
Comparison of water-assisted and gas-assisted injection moldingComparing with water-assisted injection molding technology and gas-assisted injection molding technology, the fundamental difference is the nature of the auxiliary molding media used. One is liquid an...More+
Gas-assisted injection molding product defects and solutionsCommon defects and solutions of gas-assisted injection moulding:1. Gas blows out the melt like in picture 1. Reason: insufficient pre-filled amount. When the plastic part is a locally thickened plate-...More+
Limitations of gas-assisted injection molding technologyGas-assisted injection molding technology has obvious advantages in thick wall thicknes and tpipe parts, but this technology still has many limitations, which are mainly reflected in the following asp...More+
Key points of gas-assisted injection molding processGas injection parametersThe gas-assisted control part is a device that controls the gas pressure in each stage, the gas-assisted parameters have only two values: gas injection time (seconds) and gas i...More+
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