Die for producing injection molded part

Abstract

The invention discloses a die for producing an injection molded part, which is characterized by being provided with a die cavity, wherein a pouring gate is arranged in the die cavity and positioned right above the die cavity. The die for producing the injection molded part in the invention has the advantages that the quality of the injection molded part is completely improved so that the right side of the product has no breakage and the appearance of the product is qualified; the injection pressure during the injection is effectively improved so that the injection pressure is regulated from 160mpa / cm<2> to 108mpa / cm<2> and is convenient for injection; the product subjected to the injection pressure is regulated, the actual shrinkage of a plastic product is equal to the design parameter, and all sizes are qualified after measured; the die can be applied to other dies to ensure that many products can be automatically produced on an injection molding machine without diving to the appearance surface at the right side; and a runner displacement direction is easy to control the mold flow balance to ensure that the following multi-hole die can simply control the injection mold flow sequence and the pressure.

Description

technical field [0001] The invention relates to a mold for producing injection molded parts. Background technique [0002] Such as figure 1 Shown is an injection molded part 1 which is provided with sockets 2 on the side. Slot 2 is set for inserting the PCB board. According to the requirements of injection molded part 1, slot 2 can only be set in such as figure 1 location shown. [0003] The molds used in the production of injection molded parts include male molds and female molds. A mold cavity with the same structure as the product is arranged between the male mold and the female mold. The mold cavity is used to hold the injection compound. After the injection plastic is cooled and molded, it becomes an injection molded part. Such as figure 2 shown for production figure 1 The mold of the injection molded part shown includes a female mold and a male mold 4 composed of a slider 31 and a slider 32 . Slide block 31, slide block 32 and male die 4 are combined to form...

AI Technical Summary

Problems solved by technology

[0004] but figure 2 During the use of the mold shown, the product is easy to break at the top of the slot on the right side at the moment when the slider is demoulded, and the appearance of the product will be damaged to varying degrees

Another disadvantage of this mold is that it is difficult to inject. On a 120-ton horizontal injection molding machine, the injection pressure has been adjusted to 160mpa / cm 2 Still can't make this product

Another disadvantage of using this mold is that the injection pressure is too high, which can easily lead to poor shrinkage of the product. The shrinkage calculated according to the previous design cannot be consistent with the shrinkage of the actual product, resulting in excessive product dimensions.

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