Thin-wall aluminum pipe stretching and expanding connection forming device and technology thereof

Abstract

The invention provides a thin-wall aluminum pipe stretching and expanding connection forming device and a technology thereof. First springs on the two sides are connected and provided with an upper expanding connection plate and a lower expanding connection plate correspondingly; an upper lead screw and a lower lead screw are fixedly arranged at the two ends of a rotating rod correspondingly, the upper lead screw and the lower lead screw can be driven by a transmission device to rotate, push rods are fixedly arranged on nuts, clamping and embedding parts are fixedly arranged in clamping grooves, pull ropes are connected to the ends of the push rods, coating plates are connected to second springs, baffles are used for shielding the coating plates, and the ends, away from the push rods, of the pull ropes are fixed to the baffles; and a touch switch is arranged on a pull rod. According to the thin-wall aluminum pipe stretching and expanding connection forming device and the technology thereof, the expanding connection degree can be freely adjusted, sectional expanding connection is achieved, a thin-wall aluminum pipe is effectively protected, the thin-wall aluminum pipe can be smeared and marked after expanding connection, workpieces with expanding connection completed and workpieces with expanding connection not completed can be conveniently and rapidly distinguished, and use is convenient.

Description

technical field [0001] The invention relates to the technical field of production and molding of finned refrigerated evaporators, in particular to a thin-walled aluminum tube stretch expansion forming device and a process thereof. Background technique [0002] In existing finned refrigeration evaporators or heat exchangers and other related equipment, it is often necessary to pass the pipes sequentially through the through holes opened on the fins, but there is usually a gap between the outer wall of the pipe and the inner wall of the through hole, resulting in a lower heat transfer efficiency. Low, the use effect is poor. [0003] In the prior art, the application number is "201810330347.0" for an expansion-joint welded stretching joint and two stretching forming processes. The stretching forming process of stainless steel sheet includes material preparation, continuous stretching die stretching sheet, milling Both ends of the pipe, spinning die forming, flanging die flang...

AI Technical Summary

Problems solved by technology

[0004] However, there are still relatively obvious defects in its use: 1. The above-mentioned device cannot freely adjust the degree of expansion of the pipeline during use, so it can only adapt to a single-standard pipeline, and its versatility is poor; 2. The above-mentioned After the device is used, the entire pipe will be expanded, so that the whole pipe will be plastically deformed, causing the thin-walled pipe to be easily damaged by excessive pulling; 3. For evaporators or heat exchangers with multiple sets of fins As far as the device is concerned, the size of the through hole on each fin may not be exactly the same, so the use of one-piece direct expansion tube will lead to excessive deformation of some pipes and through holes, while there is still a gap between the other part of the pipe and the through hole, Improvements are needed; 4. When there are a large number of workpieces to be processed, it is difficult to distinguish the pipes that have been expanded and those that have not been expanded directly through the appearance, which is easy to cause confusion. Therefore, it takes extra time to partition during processing, which is more cumbersome

Images