U-shaped pipe chipless forming all-in-one machine and working method thereof

Abstract

The invention discloses a U-shaped pipe chipless forming all-in-one machine and a working method thereof. According to the technical scheme, the all-in-one machine is characterized in that the all-in-one machine comprises a rack which is provided with a feeding device, a clamping device for clamping a pipe fitting, a bending device, an anti-bevel device for preventing the pipe fitting from generating a bevel in bending, and a cutting mechanism, and the bending device comprises a mounting plate which can be driven to turn over; and the mounting plate is provided with an explorator which is turned over along with the mounting plate so as to bend the pipe fitting. In the invention, an anti-bevel pipe casing is abut against a copper pipe port all the time in the bending of the copper pipe to prevent the side of the copper pipe with small pipe diameter from extending, and the pipe port can be prevented from deforming effectively; the U-shaped pipe quality is guaranteed, and a mandril is inserted into the bending position of the copper pipe, so that the copper pipe can be prevented from wrinkling and deforming effectively.

Description

[0001] 【Technical field】 [0002] The invention relates to a U-shaped tube chipless forming integrated machine and a working method thereof. [0003] 【Background technique】 [0004] As a compact heat exchanger, the tube-fin heat exchanger has a wide range of applications in the refrigeration industry. With the technical development of the air conditioning and refrigeration industry, and the further strict control of environmental protection regulations, the requirements for the heat exchange performance of the heat exchange unit itself are more stringent to compensate for the low performance of alternative refrigerants. Therefore, the heat exchanger structure (type of heat exchange tubes and fins) and the related heat exchanger forming process are important factors affecting the heat exchange performance, and are of great significance for improving the overall heat exchange performance of the heat exchanger. The forming process of the heat exchanger mainly has the following th...

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Problems solved by technology

[0005] The existing U-shaped pipe bending machine and its working method have at least four disadvantages: first, if there is no anti-slope device, when the copper pipe is bent, the end of the outer ring of the pipe will shrink, and the end of the inner ring of the pipe will elongate As a result, the nozzle is deformed into a bevel. The usual treatment method is to cut off the deformed bevel, but this will lead to waste of materials; second, when cutting the nozzle, burrs will be generated, so there must be a process to deal with the burrs. This will lead to an increase in the production process and production costs; third, the copper tube is easily squeezed and deformed during bending, and is usually flattened, resulting in a high rate of defective products; fourth, the degree of automation is too low

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