A tube expander for segmental flanging of expanded tubes

Abstract

The invention discloses a pipe expander for segmental flanging of expanded pipes, which comprises a frame, on which a group of expansion rods that can slide back and forth on the frame are arranged, and one end of the expansion rods is fixed on the expansion rod mold base The other end is provided with a discharge seat; it also includes the second and third flanging punches, the discharge seat is provided with a fixed beam, and the fixed beam is provided with a left and right sliding plate and a first drive for pushing the left and right sliding plate to move left and right. The left and right sliding plates are provided with an up and down sliding plate and a second driver for pushing the up and down sliding plate to move up and down, and the second and third flanging punches are arranged on the up and down sliding plate. According to the strength requirements of the heat exchanger, the present invention can set a reasonable number of the second and third flanging punches to ensure that the heat exchanger will not be deformed due to excessive force; complete the segmental exchange of the second and third flanging punches Heater expansion tubes are flanged two or three times. At the same time, some heat exchanger expansion tubes can be flanged two or three times according to customer requirements, which is easy to operate and easy to adjust.

Description

technical field [0001] The invention relates to a tube expander, in particular to a tube expander which facilitates segmental flanging of expanded tubes. Background technique [0002] The tube expander is an essential equipment used to make an important part of the air conditioner, that is, the heat exchanger. During the production process of the heat exchanger, the copper tube on it needs to be flanged two or three times, so that the mouth of the copper tube of the heat exchanger can be welded with other components to ensure the closed circulation system of the heat exchanger. At present, the tube expanders on the market perform two or three times of flanging as a whole at one time, and the forming force reaches 20t-30t. The pressure on the heat exchanger is relatively large, and it is easy to cause overall deformation of the heat exchanger with low strength. bending. Since there are many types of heat exchangers and many heat exchangers have very low strength, it is nece...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tube expander that is convenient for segmental flanging of tube expanders, which solves the problem that the existing tube expander performs two or three flanging at one time, and the heat exchanger is easy to bend and deform, and it is convenient to choose the correct size of the expander. Flip two or three times

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