Fastening bolt for fixing copper foil tester

Abstract

The invention discloses a fastening bolt for fixing a copper foil tester. The fastening bolt comprises an outer sleeve, a clamping piece, a first through hole, a second through hole, a first ejection column, a first fastening block, a bolt, a first connecting piece, a second ejection column, a second fastening block and a second connecting piece. The fastening bolt is convenient and fast in installation and disassembly; no structural part generates external force deformation; and the fastening bolt can be recycled, and is better in fastening effect.

Description

technical field [0001] The invention relates to the technical field of copper material processing equipment, in particular to a fastening bolt for fixing a copper foil testing machine. Background technique [0002] Copper foil, especially rolled copper foil with a purity of more than 99.99%, is one of the basic materials of the electronics industry. With the rapid development of the electronic information industry, the demand for copper foil is also increasing. The products are widely used in mobile phones, Industrial computers, notebook computers, LCD flat panel displays, digital cameras and other electronic products, as well as various industries such as medical equipment and aerospace. Domestic and foreign markets have an increasing demand for rolled copper foil, especially high-end high-performance rolled copper foil, and its production process is relatively complicated. Process formulas such as chemicalization, blackening, and yellowing, as well as new treatment method...

AI Technical Summary

Problems solved by technology

[0004] But the existing expansion bolt also has the following problems: 1. The existing expansion bolt utilizes the bolt head with a taper to expand the metal casing, so that a large friction force is generated between the metal casing and the hole wall , for fixing, under other equal conditions, compared with other types of force, such as normal pressure, friction is a relatively weak force, which produces poor fastening effect and is prone to loosening; 2. The first time It is more convenient and quick to install the expansion bolts, but because the expansion bolts use friction, it is very difficult to disassemble. It is necessary to hammer the part of the expansion bolts leaking outside the wall with a large external force to make it shake left and right, so that the metal sleeve The pipe can be loosened from the expanded state, which is time-consuming and labor-intensive, and has a certain degree of physical damage to the expansion bolt and the wall. deformation, it is difficult to install when used again, and the fastening effect is also poor. What's more, the expansion bolt cannot be loosened from the hole, so it can only be cut off directly, and the part in the wall is permanently sealed in the wall, resulting in expansion Bolt reuse rate is low

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