Fin and flat tube press-fitting device for heat exchanger core integrated unit

Abstract

The invention provides a fin and flat pipe press fitting and forming device for a heat exchanger core integration unit. The fin and flat pipe press fitting and forming device comprises a fixing frame, a work table board, an upper fixing plate, an upper lifting screw rod, a lifting pressure plate, fin tightening mechanisms and a top plate lifting mechanism. A synchronous drive steering device set drives the lifting pressure plate to be lifted. The top plate lifting mechanism and the lifting pressure plate are used for limiting a fin integrating assembly. The lifting pressure plate is used for holding up the fin integrating assembly, the two fin tightening mechanisms distributed linearly are used for moving and locating the fin integrating assembly, the fin integrating assembly is accurately inserted into a micro-channel flat pipe through linear decrease of the top plate lifting mechanism, and finally press fitting and forming are carried out on the fin integrating assembly and the flat pipe through the lifting pressure plate. The fin integrating assembly and the micro-channel flat pipe can be automatically assembled, and the major problems that the capacity is low and the product quality is poor due to manual assembling are solved.

Description

technical field [0001] The invention relates to the processing field of fins in an all-aluminum microchannel dual-purpose parallel flow heat exchanger for heating and cooling, in particular to a fin and flat tube press-fitting and forming device in a heat exchanger core integrated unit. Background technique [0002] All-aluminum micro-channel dual-purpose parallel flow heat exchanger for heating and cooling is a heat exchanger that uses micro-channel aluminum flat tubes instead of internally threaded copper tubes to exchange heat through refrigerants. Traditional copper-aluminum heat exchangers use aluminum fins to pass through The high-speed punching machine punches out circular holes, so that the circular copper tubes pass through the aluminum fins, and then the outer wall of the copper tubes is tightly combined with the fin holes through the expansion of the copper tubes, and the refrigerant flows in the copper tubes to achieve the purpose of heat exchange. Another all-al...

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Problems solved by technology

[0003] The aluminum fins used in the all-aluminum microchannel dual-purpose parallel flow heat exchanger for cooling and heating are obtained by continuous stamping of strip-shaped aluminum strips. In order to make full use of materials during stamping, the distribution scheme of aluminum fins is as follows: figure 2 As shown, the two comb-shaped aluminum fins are symmetrically distributed. To assemble the comb-shaped aluminum fins and micro-channel aluminum flat tubes into the heat exchanger core assembly, the aluminum fins are divided and flipped sequentially by hand. Sheet arranging, material collection, conveying, and aluminum flat tube press-fitting, this production method not only has low production efficiency, but also the product quality is affected by human factors, the production labor cost is too high, and the lack of mechanized production equipment is the limit Technical Obstacles in Popularization and Application of Parallel Flow Heat Exchanger

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