Mold evacuating device for injection molding machine and operating method of mold evacuating device

Abstract

The invention provides a mold evacuating device for an injection molding machine, and an operating method of the mold evacuating device. The mold evacuating device comprises an equipment main body, a vacuum pump, a negative pressure tank, a one-way valve and a controller. The operating method of the mold evacuating device for the injection molding machine comprises the steps that when a movable mold is 0.5-2mm away from a fixed mold, an injection molding machine host transmits a control signal to the controller; the controller transmits a start-up command to the one-way valve; the one-way valve is opened; the vacuum pump runs; air in a mold cavity is drawn into the negative pressure tank; the interior of the mold cavity is vacuum; the injection molding machine host transmits mold assembly information to the controller; the controller transmits a close command to the one-way valve; the one-way valve is closed; and the vacuum pump stops running. With the adoption of the technical scheme, the density and surface accuracy of a mold product can be improved; the problem that exhaustion, a flow line, charring and mold filling are poor is solved; a product filling effect can be improved greatly; and the product quality is improved.

Description

Technical field [0001] The invention relates to the technical field of mold vacuuming, and in particular to a mold vacuuming device used by an injection molding machine and a working method thereof. Background technique [0002] In the current mold injection process, there will be a certain amount of air, moisture or other decomposition gases in the mold cavity, which often causes undesirable phenomena in injection molded products, such as poor filling, pores after degreasing and sintering, low product density, unstable dimensions, etc. , Which ultimately increases defective products and increases costs. Summary of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a mold vacuuming device used in an injection molding machine and its working method to solve the phenomenon of poor exhaust and poor filling in the mold injection process, so as to improve the filling effect of the product , Improve product quality. ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a mold vacuum device and working method for injection molding machines to solve the phenomenon of poor exhaust and poor filling during the injection molding process of the mold, so as to improve the filling effect of the product , improve product quality

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