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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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Abstract
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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
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[0028] Example one
[0029] Such as figure 1 As shown, this embodiment provides a method for multi-stage clamping and molding of an injection molding machine, including the steps:
[0030] S10: Increase the pressure on the injection molding machine, and when the injection pressure reaches the preset first pressure value, start the injection molding machine to inject the mold;
[0031] S20: After delaying a preset time, control the injection molding machine template to move to open the mold, and adjust the injection molding machine to a 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 injection molding machine template 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 and pressure retention through the preset second state;
[0033] S40: Determin...
Example Embodiment
[0051] Example two
[0052] Such as figure 2 As shown, this embodiment provides a multi-stage clamping molding method for an injection molding machine. The difference between this embodiment and the first embodiment is that a proportional pressure valve, a shut-off valve, and a high-pressure proportional valve for clamping are added.
[0053] The newly-added proportional pressure valve, shut-off valve and high-pressure proportional valve for clamping are set in the clamping hydraulic system of the injection molding machine to control the micro-opening and clamping process of the cooperative template.
[0054] When the injection molding machine closes, brakes and reaches the clamping pressure, the injection molding machine starts injection. After a certain delay, the injection molding machine template starts to open slightly, that is, the template moves relative to each other to open the mold, and the proportional pressure is increased at this time The valve and the shut-off valve be...
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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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