Technology for manufacturing bidirectional metal zip fastener

Abstract

The present invention relates to the technical field of zippers, and more specifically relates to the manufacturing process of two-way metal zippers. It is carried out on a set of precision combined metal shearing and cold stamping dies on a machine tool. Edge cutters and cutting cutters, through which metal elliptical wires of specific specifications are cold-stamped and extruded and shaped at room temperature in the model, and then through positioning and directional punching and step-by-step processing until a specific shape, using this process method only needs One machine can complete the single-chain manufacturing process at one time and discharge the embryo chain, and then introduce the cloth belt with sprockets into the traditional ordinary polishing machine for high-speed polishing, and finally apply electroplating treatment, which is the finished zipper. The invention has the advantages of simple process, extremely low scrap rate, stable product quality, high comprehensive strength, long service life, equipment cost and production cost saving, fast production speed and strong market competitiveness.

Description

Technical field: [0001] The invention relates to the technical field of slide fasteners, and more specifically relates to a manufacturing process of a two-way metal slide fastener. Background technique: [0002] The two-way zipper is an increasingly popular double-pull zipper that can hold two sliders. The single-tooth structure of the zipper tooth tooth 20 figure 1 , 2 As shown, the quality of zippers mainly comes from reasonable production processes and methods, followed by quality control. The development of a new process technology must focus on ensuring product quality. Any metal zipper that can truly meet the requirements of use , the most basic force tests and indicators that must be met include: longitudinal tension, transverse tension, horizontal tension, bending strength, single-tooth displacement strength, and smoothness of pulling. At present, these indicators have national and international standards. , so in the six most basic requirements, as long as one of ...

AI Technical Summary

Problems solved by technology

[0009] 1. There are too many processes and are too complicated, because the more processes there are, the longer the product manufacturing chain will be, and the more quality links need to be controlled, so the more loopholes

[0010] 2. The more links, the more turnaround time, so the efficiency is lower and the speed is slower, which cannot meet the supply demand of large quantities

[0011] 3. The size uniformity of the single tooth of vibration polishing is poor, and the flatness of the finished product is poor

[0012] 4. The single-tooth combination machine can only feed through the vibration plate, so the stability of the single-tooth push tooth is poor, which determines that its speed is strictly limited

[0013] 5. The cost is too high, which hinders the universal promotion and restricts the popular use

There is no considerable economic benefit for the manufacturer

[0014] 6. Electroplating the surface of the single tooth and then putting it on the assembly machine seriously violates the reasonable order of the manufacturing industry, which is rough first and then fine, resulting in the appearance of the finished single tooth being affected in the assembly process including vibration feeding, pushing tooth positioning, and mechanical clamping. Great damage and scratches

[0015] To sum up, because of the huge manufacturing cost and low yield rate, it is difficult for domestic luggage companies to pass on their costs, which greatly restricts the promotion and use of this kind of zipper, although many manufacturers and scientific research institutions have carried out this project. Pioneering and hard work have had little effect so far, and some manufacturers have introduced products of similar shapes modified with traditional zippers, but this kind of zipper is very easy to burst, the quality is unstable, and the service life is low. Most of them have also been discontinued, and the product quality is low, so I won’t repeat them here.

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