Heat forming device

Abstract

The invention discloses a heat forming device, and relates to the technical field of plastic heat forming machines. The heat forming device comprises a forming die, an elastic carrying pad, a pressurizing unit, a heating unit and a tightly pressing sealing device, wherein the forming die is provided with a forming cushion ring; and the elastic carrying pad and the sheet material to be subjected toheat forming are tightly combined to form a synchronous combination body; the synchronous combination body is tightly sealed with the forming cushion ring through the tightly pressing sealing device,and a to-be-deformed area of the synchronous combination body is aligned with a forming inlet of the forming cushion ring; the pressure output end of the pressurizing unit and the heat output end ofthe heating unit are both output and act on the to-be-deformed area of the synchronous combination body, the pressure provided by the pressurizing unit is the pressure which points to the deformationin the to-be-deformed area to the body to be deformed, and the heating temperature provided by the heating unit is the temperature to be subjected to the softening of the to-be-formed sheet material of the to-be-deformed area. The heat forming device has the beneficial effects that a barrel-shaped membrane which can be integrally formed can be produced.

Description

technical field [0001] The invention relates to the technical field of thermoforming devices. Background technique [0002] At present, the thermoforming methods of plastic products are mainly divided into extrusion molding, injection molding, blow molding, blown film molding, and tape casting. Among them, blown film molding and tape casting are processes for producing plastic films. Blown film molding and tape casting are both processes for producing flat plastic films, and it is impossible to directly form a three-dimensional plastic film (barrel-shaped film) with a bottom surface; the existing barrel-shaped film can only be processed by secondary hot pressing or The sheet-like plastic film is made by cold pressing. [0003] Blow molding and injection molding can form a barrel-shaped film in one piece, but the thickness of the forming is relatively large, such as purified water and beverage bottles. Its thickness cannot reach the order of magnitude of blown film or cast...

AI Technical Summary

Problems solved by technology

The current practice in the market is to crimp the barrel-shaped film twice through the plastic tubular film or planar film. Although the process is relatively mature, the edge of the barrel-shaped film that is crimped twice cannot achieve a smooth transition.

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