Bending axis for forming underwear back button

Abstract

The invention discloses a bending axis used for shaping an underclothes back buckle which relates to a shaping die for the underclothes back buckle of a woman. The bending axis consists of a bending axis body, a pressing wheel and a mandrel; the pressing wheel is in a disc shape and arranged in a notch of the head part of the bending axis body; part of the pressing wheel reveals outside the notch; besides, the pressing wheel and the mandrel fixed on the bending axis body form a rotatable fit. The pressing wheel and the bending axis body are component of different materials; the mandrel and the bending axis body are pivoted and pressed into a whole. The bending axis is used for shaping and processing the underclothes back buckle (hook shape piece, circle shape piece); has little friction when being bended; can not damage a workpiece membrane layer and improve the quantified rate of products; besides, the bending axis is easy to be manufactured and saves the steels with excellent quality; after the service life becomes due, the pressing wheel can be replaced, thus avoiding being integrally wasted and greatly reducing the manufacturing and using cost.

Description

technical field [0001] The invention relates to a molding die used for clothing production, in particular to a bending shaft for molding back buttons of underwear. Background technique [0002] The back button of women's underwear (including hook fasteners and loop fasteners) is formed by bending metal wires on a special mold, and the bending axis as the movable mold part of the mold plays an important role in bending. The metal wire used for the underwear back button is generally stainless steel, or a layer of protective film is applied to ordinary metal materials, preferably a colored film. For the latter, the film layer must be intact and free from damage. The existing bending shaft is an integral type, its head is arc-shaped, and an arc-shaped groove is processed. When bending the workpiece, sliding friction occurs between the two, and the friction force is relatively large, which often makes the film on the back buckle If the layer is damaged, it is difficult to ensure...

AI Technical Summary

Problems solved by technology

The existing bending shaft is an integral type, its head is arc-shaped, and an arc-shaped groove is processed. When bending the workpiece, sliding friction occurs between the two, and the friction force is relatively large, which often makes the film on the back buckle If the layer is damaged, it is difficult to ensure that the product is qualified even if the head of the bending shaft is ground into a mirror surface, and the processing and grinding of the head is also quite troublesome.

In addition, in order to meet its strength and hardness requirements, the integral bending shaft is currently made of high-quality steel as a whole, usually tungsten carbide material, which has a high production cost, and after the expiration of the use, the whole is scrapped, resulting in waste

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