Extruding die with novel mandrel fixing structure

Abstract

The invention discloses an extruding die with a novel mandrel fixing structure. The extruding die with the novel mandrel fixing structure comprises a die body, a filtering plate, a support plate, a mandrel and a port die, wherein a mold cavity for storing the mandrel is formed in the support plate; a plurality of T-shaped through grooves which are distributed in the extruding direction are formed in the sidewall of the mold cavity; T-shaped mandrel feet which are embedded into the T-shaped through grooves are arranged on the sidewall of the mandrel; threaded holes which are communicated with first connecting grooves in a one-to-one correspondence manner are formed in the upper end and the lower end of the support plate; first screws are arranged in the threaded holes in a fitting connection manner. According to the extruding die with the novel mandrel fixing structure, the support plate and the mandrel are fixed in a manner of embedding the T-shaped through grooves and the T-shaped mandrel feet, so that the number of limiting surfaces of each mandrel foot relative to the support plate is doubled, and the deformation of each first connecting groove and the corresponding second connecting groove can be mutually limited; meanwhile, two ends of the mandrel feet are locked through the first screws, so that the mandrel is hardly loosened, and as a result, a product can be produced stably for a long time.

Description

technical field [0001] The invention relates to the technical field of plastic production, in particular to an extrusion die with a novel mandrel fixing structure. Background technique [0002] The extrusion die is used to complete the extrusion molding process. It mainly uses pressure to extrude the plastic that has been processed by hot melt into the mandrel and the die through the distributor. Such as Figure 1~2 As shown, the mandrel 01 is usually provided with a mandrel foot 011, and the mandrel foot 011 is correspondingly fitted into the groove 021 provided on the support plate 02. Welding point 03, so that the mandrel 01 is fixed on the support plate 02, the mandrel foot 011 on the traditional mandrel 01 is an inverted triangle, and the corresponding groove 021 set on the support plate 02 is an inverted triangle groove 021, at this time the concave There are three constraining surfaces between the groove 021 and the mandrel foot 011, and there are few constraining su...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, and propose an extrusion die, which solves the problem that the constraint surface between the groove and the mandrel foot in the prior art is less, and the gap between the groove and the mandrel foot after the extrusion die has been used for a period of time. There will be loose technical problems between

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