Processing of plastic casing for locator
Payment Type:T/T,Paypal
Incoterm:FOB,EXW
Min. Order:1 Piece/Pieces
Transportation:Ocean,Air
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$1500≥1Piece/Pieces
Product Description
Product Attributes
Model No.: AD-104
Brand: AD-269
Forming Method: Plastic Injection Mould, Preform Mould, Extrusion Mould
Product Material: Plastic
Supply Ability & Additional Information
Transportation: Ocean,Air
Payment Type: T/T,Paypal
Incoterm: FOB,EXW
Packaging & Delivery
Selling Units:
Piece/Pieces
Plastic Shell Mold
Dongguan Anding Technology Manufacturing Co., Ltd. is a modern private enterprise integrating product development and design, Precision mold manufacturing, product injection molding, oil injection screen printing, and electronic assembly. It is located in Chuangye Road, Dongshan Village, Qishi Town, Dongguan City, with convenient transportation.
Injection Mold Processing - TV Plastic shell mold, Electronic product mold,Electronic Digital Product Mold,Mobile Phone Peripheral Product Mold,Toy product molds, Household.
It is very important to master the on-site environment of plastic part molding in order to complete the meticulous cultivation of Changping injection molding, such as the trends of temperature, pressure, time, and molecular structure, as well as the trends of fiber fillers and molecular crystallization in plastic parts during molding, all of which will affect the specification accuracy of injection molded parts. The shrinkage and shaking of injection molded parts caused by the molding environment are the fundamental reasons for the specification deviation of injection molded parts.
First, the influence of mold temperature. The temperature during injection molding has a significant impact on the accuracy of product specifications, especially the mold shell temperature. The mold temperature is based on the direction and crystallinity of the molten polymer, which directly affects the shrinkage rate of the product, leading to specification deviation. For amorphous resins, the mold temperature is high, the solution cools slowly, the molecules have sufficient relaxation time, the crystallization tends to be more complete, the crystallinity is high, and the shrinkage rate increases. For crystalline resins, high mold temperature can reduce post shrinkage throughout the entire injection molding process, ensuring stable product specifications. If the mold temperature is low, cooling is fast, and the molecular structure of the solution is frozen and cleaned, it is not easy to crystallize, with small volume changes and small product shrinkage. However, the low temperature of the mold increases the post shrinkage of the product, prolonging the shrinkage time, making it difficult to stabilize the specifications of the injection molded parts. It is a sensitive factor in the entire crystallization process, and the crystallization rate can vary several times when the temperature difference is 1 ℃. Uneven or unstable mold temperature can immediately affect crystallinity, leading to shrinkage of injection molded products and specification deviations.
Secondly, the impact of injection pressure. The change in injection pressure leads to protrusions in product size. When other process parameters remain unchanged, increasing injection pressure can improve the melt filling activity, increase the active length, accelerate the filling speed, make the product dense, reduce shrinkage, but it is prone to generating orientation stress. When the pressure is low, the product cannot be fully compacted, and the shrinkage rate increases.
Thirdly, the impact of holding pressure. Pressure maintenance plays an important role in stabilizing product dimensions. During injection molding, increasing pressure holding can supplement and compact the shrinkage of the products inside the mold, reducing the shrinkage rate. But if the holding pressure is too high, the residual stress during demolding of the product will increase, causing deformation or cracking, and affecting the size of the product.
Fourthly, the impact of injection time. Before the gate is closed, the shorter the injection time, the greater the shrinkage rate, and the greater the magnitude of the shrinkage rate change. When the injection time reaches or exceeds the solidification time of the gate, even if the injection time is extended, the quality and shrinkage rate of the injection molded product will not change again. The injection time control is closely related to the designed gate thickness, which largely controls the gate closing time.
Injection Mold Processing - TV Plastic shell mold, Electronic product mold,Electronic Digital Product Mold,Mobile Phone Peripheral Product Mold,Toy product molds, Household.
It is very important to master the on-site environment of plastic part molding in order to complete the meticulous cultivation of Changping injection molding, such as the trends of temperature, pressure, time, and molecular structure, as well as the trends of fiber fillers and molecular crystallization in plastic parts during molding, all of which will affect the specification accuracy of injection molded parts. The shrinkage and shaking of injection molded parts caused by the molding environment are the fundamental reasons for the specification deviation of injection molded parts.
First, the influence of mold temperature. The temperature during injection molding has a significant impact on the accuracy of product specifications, especially the mold shell temperature. The mold temperature is based on the direction and crystallinity of the molten polymer, which directly affects the shrinkage rate of the product, leading to specification deviation. For amorphous resins, the mold temperature is high, the solution cools slowly, the molecules have sufficient relaxation time, the crystallization tends to be more complete, the crystallinity is high, and the shrinkage rate increases. For crystalline resins, high mold temperature can reduce post shrinkage throughout the entire injection molding process, ensuring stable product specifications. If the mold temperature is low, cooling is fast, and the molecular structure of the solution is frozen and cleaned, it is not easy to crystallize, with small volume changes and small product shrinkage. However, the low temperature of the mold increases the post shrinkage of the product, prolonging the shrinkage time, making it difficult to stabilize the specifications of the injection molded parts. It is a sensitive factor in the entire crystallization process, and the crystallization rate can vary several times when the temperature difference is 1 ℃. Uneven or unstable mold temperature can immediately affect crystallinity, leading to shrinkage of injection molded products and specification deviations.
Secondly, the impact of injection pressure. The change in injection pressure leads to protrusions in product size. When other process parameters remain unchanged, increasing injection pressure can improve the melt filling activity, increase the active length, accelerate the filling speed, make the product dense, reduce shrinkage, but it is prone to generating orientation stress. When the pressure is low, the product cannot be fully compacted, and the shrinkage rate increases.
Thirdly, the impact of holding pressure. Pressure maintenance plays an important role in stabilizing product dimensions. During injection molding, increasing pressure holding can supplement and compact the shrinkage of the products inside the mold, reducing the shrinkage rate. But if the holding pressure is too high, the residual stress during demolding of the product will increase, causing deformation or cracking, and affecting the size of the product.
Fourthly, the impact of injection time. Before the gate is closed, the shorter the injection time, the greater the shrinkage rate, and the greater the magnitude of the shrinkage rate change. When the injection time reaches or exceeds the solidification time of the gate, even if the injection time is extended, the quality and shrinkage rate of the injection molded product will not change again. The injection time control is closely related to the designed gate thickness, which largely controls the gate closing time.
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