Edge extrusion riveting process of solar energy heat radiation base plate and riveting mold for edge extrusion riveting process

Abstract

The invention discloses an edge extrusion riveting process of a solar energy heat radiation base plate and a riveting mold for the process. The process comprises: performing clearance fit between a trough and a heat radiating fin of the heat radiation base; and extruding two side walls of the trough of the heat radiation base towards the heat radiating fin, and forming an assembling piece through edge extrusion; the pivoting mold comprises an upper template, a lower mold base and a lower template; a plurality of stripping floating blocks are arranged in the lower template; a plurality of lower mold punches, a punch fixing sleeve plate and a material choking sleeve plate are arranged on the lower template, wherein the material choking sleeve plate is arranged in the punch fixing sleeve plate; and heat radiation base plates to be combined are arranged between the punch fixing sleeve plate and the lower template. According to the edge extrusion riveting process provided by the invention, welding is replaced by punching, the machining cost is saved, the manufacturing cost is reduced greatly, and the production efficiency is improved; the edge extrusion riveting process has the advantages of short mold-opening period, low cost, high production efficiency, stable quality, beautiful structure, strong holding capability of the heat radiation fin, uniform contact plane and good thermal conduction; the product manufacturing competitiveness is improved, and the edge extrusion riveting process has a wide popularization application value.

Description

technical field [0001] The invention relates to a production process of a solar heat dissipation bottom plate, in particular to an edge extrusion riveting process of a solar heat dissipation bottom plate and a riveting mold thereof. Background technique [0002] Solar energy is a clean and environmentally friendly natural renewable energy. With the development of science and technology, the use of solar energy is becoming wider and wider, and its demand is increasing. As a result, the supply of solar heat dissipation base plates is insufficient. The solar heat dissipation base plate It is composed of a heat dissipation base and a heat dissipation plate installed in the heat dissipation base. Due to the large size of the solar heat dissipation base plate, the existing combined processing technology of the solar heat dissipation base plate in the industry generally adopts soldering riveting and bump riveting; while tin Soldering riveting process, the process method is: apply a...

AI Technical Summary

Problems solved by technology

[0002] Solar energy is a clean and environmentally friendly natural renewable energy. With the development of science and technology, the use of solar energy is becoming wider and wider, and its demand is increasing. As a result, the supply of solar heat dissipation base plates is insufficient. The solar heat dissipation base plate It is composed of a heat dissipation base and a heat dissipation plate installed in the heat dissipation base. Due to the large size of the solar heat dissipation base plate, the existing combined processing technology of the solar heat dissipation base plate in the industry generally adopts soldering riveting and bump riveting; while tin Soldering riveting process, the process method is: apply a layer of solder paste on the bottom surface of the heat sink and the joint surface of the heat sink, then fix the fixture and pass it through a high-temperature furnace, and form an assembly after welding; but this production process has false welding ﹑The risk of uneven welding surface affects the holding force and thermal conductivity, and has the defects of long mold opening cycle and high cost

The bump riveting process is to match the gap between the bumps of the heat dissipation base and the holes of the heat sink, and then squeeze the bumps of the base toward the direction of the heat sink holes, and finally form the assembly after the bumps are extruded; Defects of long mold opening cycle, high cost, unstable quality, and the risk of uneven (not tight) contact surface of the assembly will affect the appearance and thermal conductivity

Furthermore, the current process can no longer meet the production requirements; therefore, we need to develop a new technology with low cost and stable quality---extrusion riveting

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