Automobile interior front door handle rear firing method gas-assisted injection mold

Abstract

The invention discloses a rear-shot gas-assisted injection molding mold for a front door handle of an automobile interior, which comprises a mold cavity with a material inlet at one end and a material outlet at the other end, and an air blower for blowing air into the cavity device, the bottom of the cavity is provided with an air inlet, and the air inlet is connected with the blowing device. The mold adopts the design of back-shot gas-assisted injection molding. After the cavity of the product is completely filled, the gas is injected to remove the excess material in the cavity to the overflow tank; the whole process of first injection and then gas injection A slider is required to be closed to control the filling of the molten material in the overflow tank, and the closing process of the slider needs to be completed when the mold is closed, and the work of controlling the slider is completed by a self-locking cylinder. The gas-assisted molding mold sets the air inlet at the bottom of the cavity, which can prevent the material from accumulating at the bottom of the cavity due to the gravity of the material itself, resulting in uneven wall thickness of the injection molded product. The gas-assisted molding mold can prepare wall thickness Uniform injection molded products.

Description

technical field [0001] The invention relates to the technical field of mold design, in particular to a rear-shot method gas-assisted injection molding mold for a front door handle of an automobile interior. Background technique [0002] Gas-assisted injection molding technology is widely used at home and abroad due to its low residual stress, not easy to warp, stable dimensions, low clamping force, short production cycle, and low cost. It produces hollow, completes the filling, pressure keeping, cooling and solidification of molten plastic, which is superior to traditional injection molding technology. [0003] When the automobile door handle is injection-molded, on the one hand, a cavity is formed inside the injection-molded door handle to save raw materials, and on the other hand, in order to make up for the shrinkage defect formed when the door handle is injection-molded, the existing injection mold generally adopts gas-assisted molding. The mold uses gas (usually nitrog...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems in the prior art, the present invention provides a gas-assisted injection molding mold for front door handles of automobile interior decoration, which effectively solves the problem of defects caused by uneven wall thickness of injection molding products, and effectively shortens the production time of injection molding. cycle, saving the cost of production raw materials and improving the surface quality of products

Images