Mould used for heat insulation parts of door body of refrigerator and freezer

Abstract

The invention discloses a mould used for heat insulation parts of a door body of refrigerators and freezers and belongs to the technical field of moulds. The mould is designed for solving the problems of a complex production process, low production efficiency and high production cost of a foaming mould of the door body in the prior art. The mould includes an upper mould board and a lower mould board, wherein the shape of die cavities of the two mould boards are matched with a shell and a lining of a heat insulation part respectively. The mould also includes a locking mechanism, a stopping edge mechanism and a pneumatic pulling core mechanism. The locking mechanism includes a clamping ring and a clamping head which are respectively fixed on the upper mould board and the lower mould board respectively and are connected with releasable clamping buckles. The stopping edge mechanism includes a turnable stopping edge and an elastic part, wherein the top of the stopping edge mechanism is clamped to the upper mould board and the bottom of the stopping edge mechanism is hinged to the lower mould board. The elastic part is arranged on a contact surface of the stopping edge to the lower mould board and is used for flicking-off the stopping edge. An air cylinder of the pneumatic pulling core mechanism drives a pulling core to move in the stopping edge to form an inverted-buckle structure. The mould is free of a pre-installing process, is simplified in producing process, is increased in production efficiency and is reduced in production cost.

Description

Technical field [0001] The present invention relates to the technical field of molds, in particular to a mold used for insulation parts of refrigerators and freezer doors. Background technique [0002] At present, in the application of existing refrigerator and freezer door foaming molds, the door lining must be assembled with pre-assembled parts (such as injection molding trim and door shells, etc.), and then the door foaming mold is used for foaming molding Thermal insulation materials, and then complete the manufacture of refrigerators and freezer doors. A lot of preparatory work needs to be done in the early stage of foam molding of the door body. Among them, only the production of pre-assembled parts requires the development of multiple sets of molds. For example, the door shell needs to be made of sheet metal molds, and the decorative strips need to be made of more than two sets. Injection molding molds, etc., that is, the existing door foam molds must be connected with fi...

AI Technical Summary

Problems solved by technology

However, a lot of preparatory work needs to be done in the early stage of foam molding of the door body. Among them, only the manufacture of pre-assembled parts requires the development of multiple sets of molds. For example, the door shell needs to be made of sheet metal molds, and the decorative strip needs to be made of more than two sets. Injection molding molds, etc., that is, the existing door body foam molds must be connected with fixed equipment to work, and the installation method is not flexible; at the same time, the manufacturing process requires pre-installation steps, the preparation process is complicated, and the production efficiency is low. High cost; due to the installation of pre-installed parts, the resulting door body is heavy, and transportation and assembly are inconvenient

[0003] In addition, the sealing effect of the cavity of the existing door body foaming mold is poor, resulting in many seams on the surface of the foamed product and poor product quality

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