Production technology of die-casting zinc alloy zipper

Abstract

The invention discloses a production technology of a die-casting zinc alloy zipper. Two chain belts enter a mould cavity in parallel under the driving of the drawstring device of a die-casting shaping machine; meanwhile, two static wires between two chain belts enter the mould cavity along two lines parallel to the chain belts under the action of the drawstring device; a chain tooth segment provided with the static wires is formed by die assembly, press-shoot, cooling and shaping; after the chain tooth segment is performed die sinking and ejection, the drawstring device quickly drives the chain belt and the static wires to cause subsequently chain and the static wires which are to be performed the die-casting to enter the mould cavity so as to carry out next mould die casting. The cycle is carried out to form a row of chain teeth; after electroplating, a spiral blade is used for cutting the static wires between teeth; and a zipper is assembled by ironing belts. The invention adopts the whole die-casting scheme of the chain teeth and the static wires so as to save the original static wire weaving technology; in addition, after electroplating, the spiral blade is used for cutting the static wires between teeth, thus the product has the advantages of good appearance, flexibility and conduction performance, small color difference after electroplating and firm and even surface coating.

Description

【Technical field】 [0001] The invention belongs to a production process of die-casting zinc alloy zippers. 【Background technique】 [0002] At present, zippers are divided into plastic zippers, nylon zippers and metal zippers, and metal zippers are divided into aluminum zippers, copper zippers and zinc alloy zippers. The structure of the zinc alloy zipper generally includes chain teeth, sliders and two chain belts. A row of chain teeth is respectively embedded on the opposite sides of the two chain belts. The two rows of chain teeth are misaligned and meshed with each other. on the chain teeth. [0003] The existing zinc alloy zipper is made by die-casting production process. The steps are as follows: first set the corresponding mold on the die-casting molding machine, then pass the chain belt braided with conductive wire through the mold cavity, and inject the zinc alloy after the mold is closed. , cooling to form the chain element segment; then, the chain belt of the chain...

AI Technical Summary

Problems solved by technology

The prior art process has the following problems: 1. The conductive thread is woven on the chain belt, and the metal conductive thread is used to connect the zipper teeth in series through the die-casting molding process to achieve the purpose of transmitting current during electroplating. Therefore, after electroplating, due to The conductive wire and teeth are electroplated at the same time, which is not only unattractive, but also has poor softness. 2. Due to the weaving process, there are high requirements for the material properties and manufacturing methods of the conductive wire. First, the tensil