Self-demolding sealing and swelling water swelling mold of cup body

Abstract

The invention provides a self-demolding sealing and swelling water swelling mold of a cup body, and belongs to the technical field of forming equipment. The mold solves the problems that long core rods are adopted in existing water swelling molds, and wire drawing and even bumping are prone to being generated during long core rod pipe insertion. The mold comprises an upper mold assembly, a lower mold assembly, an upper core rod assembly and a lower core rod assembly, the upper mold assembly and the lower mold assembly are symmetrically arranged up and down, the upper core rod assembly and the lower core rod assembly are symmetrically arranged up and down, water swelling forming space is formed between the upper mold assembly and the lower mold assembly and between the upper core rod assembly and the lower core rod assembly, the upper mold assembly comprises an upper mold sleeve and an upper mold cavity, and the lower mold assembly comprises a lower mold sleeve and a lower mold cavity. After up-down mold compounding of the water swelling mold, the upper mold cavity can move upwards relative to the upper mold sleeve and is buckled with the upper core rod assembly to be used for blocking an upper opening of the water swelling forming space, and the lower mold cavity can move downwards relative to the lower mold sleeve and is buckled with the lower core rod assembly to be used for blocking a lower opening of the water swelling forming space. The mold has the advantages that the lengths of an upper core rod and a lower core rod are greatly reduced, and the situations of wire drawing, bumping and the like caused by pipe insertion during production are reduced.

Description

technical field [0001] The invention belongs to the technical field of molding equipment, and relates to a self-demolding sealing water swelling mold for a cup body. Background technique [0002] In the process of metal water cup processing, it is necessary to shape the cup body. The main process is to put the round tube into the forming mold first. The water swelling forming mold mainly includes an upper mold and a lower mold. Press to seal the product tightly. The forming mold seals and compresses the openings at both ends of the round tube, and then injects water from the inside of the round tube to deform the round tube from the inside to the outside to fit the mold cavity. After the water expansion process is completed, the upper mold needs to be Separate from the lower mold so that the formed round tube can be taken out. [0003] Due to the deformation of the circular tube, it fits tightly into the cavity of the mold. Therefore, when the upper mold and the lower mold ...

AI Technical Summary

Problems solved by technology

[0003] Due to the deformation of the circular tube, it fits tightly into the cavity of the mold. Therefore, when the upper mold and the lower mold are separated, it will be affected by the friction force between the circular tube and the inner wall of the cavity, which makes it very difficult to separate the upper mold and the lower mold, resulting in mold jamming and difficulty in removal. Problems such as mold and low efficiency

[0004] At present, most of the water expansion molds use long mandrels, which have the functions of guiding, compressing, supporting, etc. However, during production, the insertion of the upper and lower mandrels is prone to wire drawing and even bruising.

[0005] The upper and lower mold cavities and the mold base of the water expansion mold are fixed by punching holes. After a period of use, the mold is easy to crack and the service life of the mold is not high

Images