Technology for manufacturing bidirectional metal zip fastener

Abstract

The present invention relates to the field of zipper technology, in the concrete, it relates to a manufacture process of bidirectional metal zipper. Said manufacture process is implemented by utilizing a set of precisely-combined metal shearing and cold-punching die equipment on one machine. On said die equipment a point-making took, an edge-cutting tool and a cutting-off tool are mounted. Said invention utilizes said die equipment to make the metal elliptical wire material with specific specification undergo the processes of cold-punching extruding, normal-temperature forming in the model, positioning directional blanking and stepped processing treatment to obtain specific form. The adoption of said technological process only can use one machine to implement procedures for manufacturing single zipper and obtain zipper blank, then the cloth strip with zipper teeth can be fed into a traditional polishing machine to make high-speed polishing treatment, finally the cloth strip with zipper teeth is undergone the process of electroplating treatment, so that the zipper finished product can be obtained.

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 teeth 20 is shown in Figure 1 and 2. The quality of the zipper mainly comes from reasonable production processes and methods. The second is quality control. The development of a new technology must focus on ensuring product quality. Any kind of metal zipper that can truly meet the requirements of use must meet the most basic force tests and indicators that must be met. Longitudinal Tensile force, transverse tensile force, horizontal tensile force, bending strength, single-tooth displacement strength, and smoothness of pulling and closing. At present, these indicators have national and international standards. Therefore, in the six most ...

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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