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Injection molding machine multistage mold locking molding method

An injection molding machine and multi-stage technology, which is applied in the field of multi-stage clamping molding of injection molding machines, can solve the problems of long production cycle, high injection equivalent, and poor molding quality of injection molding products, so as to improve molding quality, ensure volume, and increase injection equivalent Effect

Active Publication Date: 2019-04-12
HAITIAN PLASTICS MACHINERY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for multi-stage clamping molding of an injection molding machine to solve the existing problems of large volume, high injection equivalent and poor molding quality of injection molding products with long production cycle

Method used

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  • Injection molding machine multistage mold locking molding method
  • Injection molding machine multistage mold locking molding method
  • Injection molding machine multistage mold locking molding method

Examples

Experimental program
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Embodiment 1

[0029] Such as figure 1 As shown, this embodiment provides a method for multi-stage clamping molding of an injection molding machine, including steps:

[0030] S10: Apply high pressure to the injection molding machine, and start the injection molding machine to inject the mold when the injection pressure reaches the preset first pressure value;

[0031] S20: After delaying the preset time, control the movement of the template of the injection molding machine to open the mold, and adjust the injection molding machine to the preset first state, and the injection molding machine performs the first injection protection through the preset first state. pressure;

[0032] S30: Control the movement of the template of the injection molding machine to perform mold clamping, and adjust the injection molding machine to a preset second state, and the injection molding machine continues to perform the first injection pressure maintaining through the preset second state;

[0033] S40: Dete...

Embodiment 2

[0052] Such as figure 2 As shown, this embodiment provides a multi-stage mold-clamping molding method for an injection molding machine. The difference between this embodiment and Embodiment 1 is that a proportional pressure valve, a shut-off valve, and a high-pressure proportional valve for mold clamping are newly added.

[0053] The newly added proportional pressure valve, cut-off valve and high-pressure mold clamping proportional valve are set in the mold clamping hydraulic system of the injection molding machine to control the micro-opening and mold clamping process of the cooperative template.

[0054] When the injection molding machine closes the mold, locks the brake and reaches the high pressure of the mold clamping, the injection molding machine starts injection molding. After a certain delay, the injection molding machine template starts to slightly open, that is, the template moves relatively, and the mold is opened. At this time, the proportional pressure is added. ...

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Abstract

The invention provides an injection molding machine multistage mold locking molding method. The method comprises the steps of S10, starting the high pressure mode of an injection molding machine, andstarting the injection molding machine to conduct injection molding on a mold when the injection molding pressure reaches up to a preset first pressure value; S20, controlling an injection molding machine mold plate to move to open the mold after delaying of the preset time and adjusting the injection molding machine to a preset first state to enable the injection molding machine to conduct primary injection and pressure maintaining according to the preset first state; S30, controlling the injection molding machine mold plate to move to lock the mold and adjusting the injection molding machineto a preset second state to enable the injection molding machine to continue primary injection and pressure maintaining according to the preset second state; and S40, judging whether the injection molding machine completes primary injection and pressure maintaining or not, if yes, locking the mold, conducting secondary injection and pressure maintaining to mold a product, and if not, returning tothe step S20. According to the injection molding machine multistage mold locking molding method, multiple times of mold opening and mold locking are conducted in the injection and pressure maintaining process, and the molding quality of the product with the abundant injection capacity, large volume and long production cycle is improved.

Description

technical field [0001] The invention relates to the field of molding technology of injection molding machines, in particular to a method for multi-stage clamping molding of injection molding machines. Background technique [0002] During the injection molding process of the injection molding machine, the product is affected by thermal expansion and contraction, and it is prone to shrinkage during cooling molding, which reduces the product qualification rate. Generally, after injection molding, the injection molding machine also needs to carry out injection pressure maintenance to prevent the cavity from shrinkage of the product. [0003] However, for some products with large volume, high injection equivalent and long production cycle, because the product often has a long molding cycle, long injection time, and a single product uses a lot of raw materials, there is no corresponding injection molding process for this product, and only through injection pressure maintaining Ca...

Claims

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Application Information

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IPC IPC(8): B29C45/67B29C45/76
CPCB29C45/67B29C45/76B29C2045/7606
Inventor 俞超栋张海平郑波胡安驰
Owner HAITIAN PLASTICS MACHINERY GRP
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