A kind of rotary release mode mold

Abstract

The invention discloses a rotating demoulding type mould comprising a back mould assembly. The back mould assembly comprises a back mould plate. A round mould core insert and an insert guiding rod used for driving the mould core insert to rotate are arranged in the back mould plate. A plurality of oblique teeth used for workpiece forming are spirally arranged at one end of the mould core insert in the circumferential direction of the mould core insert. A guiding rail of which the radian is the same with the radian of the oblique teeth is spirally arranged on the inner side wall of the mould core insert. A guiding column matched with the guiding rail is spirally arranged on the outer side wall of the insert guiding rod. The back mould assembly further comprises a limiting assembly used for limiting axial moving of the mould core insert. The radian of the guiding rail is the same with the radian of the oblique teeth, so that in the disengaging process of the oblique teeth from a workpiece, damage to the workpiece is avoided. According to the rotating demoulding type mould, a product with the high surface quality can be obtained, secondary processing of the product is avoided, production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to a rotary stripping mold. Background technique [0002] In the prior art, the circle is a product with a spiral inner buckle surface, such as an air outlet product of an air purifier, such as figure 1 As shown, the mold generally adopts the method of front and rear mold core penetration, and the mold is divided in the middle of the spiral inner buckle surface, and the mold release slope of the front and rear film of the product is modified so that the mold can be penetrated by the front and rear film. It has the following disadvantages: because the circumference of the product is a spiral inner buckle surface, there will be a difference of 0.5 to 1.5 mm between the front and rear molds at the penetration surface, and the gap at the parting surface will not only affect the air quality of the entire product, but also It will cause too much noise. Therefore, the products after injecti...

AI Technical Summary

Problems solved by technology

It has the following disadvantages: because the circumference of the product is a spiral inner buckle surface, there will be a difference of 0.5 to 1.5 mm between the front and rear molds at the penetration surface, and the gap at the parting surface will not only affect the air quality of the entire product, but also It will cause too much noise. Therefore, the products after injection molding need to undergo secondary processing. Generally, five-axis CNC machine tools are used to process the fractured surface, and then manual grinding and polishing are used to make the surface smooth. The processing technology is relatively complicated. Production High cost and low production efficiency

Images