Sheeting fixture

Abstract

The invention relates to a sheeting fixture, which is used for tightly pressing and fixing sheets on a base and comprises a pressing plate and a bottom plate, wherein the pressing plate and the bottom plate can be fastened and pressed to each other; accommodating space is formed between the bottom plate and the pressing plate; the base and the sheets are placed in the accommodating space in a stacked manner; and the pressing plate is provided with a plurality of hold-down devices which are used for pressing the sheets on the base. One ends of the hold-down devices are fixed on the pressing plate, and the other ends of the hold-down devices are retractably connected with one another relative to the pressing plate and then are elastically pressed against the sheets. When the sheets are welded to the base, the problems of deformation, movement, surface damage, poor flatness and the like of the sheets due to heating can be effectively solved.

Description

【Technical field】 [0001] The invention relates to a tooling fixture, in particular to a sheet pressing fixture for pressing a thin sheet on a base. 【Background technique】 [0002] With the continuous development of electronic products, multi-functional integration and thinning have become the mainstream, so more and more thin or thin-like components are used in the electronics industry, such as PCB boards, chips and display boards. In order to facilitate the welding of the sheet to the base, the sheet is generally pressed against the surface of the base with a clamp before welding. [0003] Existing clamping fixtures mostly adopt the surface clamping method, which is mainly composed of a pressure plate (surface), a bottom plate and a pressure relief pad. As the thickness of the sheet components becomes smaller and smaller, the existing clamping fixtures can no longer meet the requirements of the assembly process. Requirements, its prominent disadvantages mainly include: ...

AI Technical Summary

Problems solved by technology

[0003] Existing clamping fixtures mostly adopt the surface clamping method, which is mainly composed of a pressure plate (surface), a bottom plate and a pressure relief pad. As the thickness of the sheet components becomes smaller and smaller, the existing clamping fixtures can no longer meet the requirements of the assembly process. Requirements, its prominent disadvantages mainly include:

[0004] 1) In the case of uneven pressure applied by the surface pressing method, problems such as displacement, surface damage and poor flatness of the sheet components will occur during the assembly process, resulting in poor assembly;

[0005] 2) The fixture adopting the surface pressing method cannot be adjusted, and the universality of the fixture is poor;

[0006] 3) The use of the pressure relief pad, although its elasticity can protect the sheet components from external force damage to a certain extent, it cannot completely solve the deformation or displacement caused by the thermal expansion and contraction of the sheet components during the welding process, and it is not conducive to the thin sheet components. cooling

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