A U-shaped end clamping device

Abstract

A U-shaped pipe clamping device, including a body, a bow clip, and a pushing mechanism: the head of the body is provided with a U-shaped groove that matches the U-shaped pipe, and symmetrical linear grooves are provided on both sides of the body; the bow clip The left and right are symmetrically arranged and hinged on the fixed pin shaft, the fixed pin shaft is installed on the upper part of the body, the heads of the left and right bow clamps respectively have grooves matching the U-shaped pipe fittings, and a rotating pin shaft is respectively set at the tail; The push mechanism includes a push rod and a rotating block. The head of the push rod is provided with a movable pin shaft. The movable pin shaft passes through the linear grooves on both sides of the body respectively. The push rod is connected with the push piece. One end of one rotating block is hinged on the rotating pin of the left bow clamp, one end of the other rotating block is hinged on the rotating pin of the right bow clamp, and the other ends of the two rotating blocks are hinged on the movable pin; the pusher drives The push rod moves up and down, which drives the movable pin shaft to move along the linear groove and drives the left and right arched chucks to open or close through the rotating block. The U-shaped pipe clamping device is convenient and reliable in clamping.

Description

technical field [0001] The invention relates to a U-shaped pipe clamping device. Background technique [0002] The tube expander is used to expand the diameter of many heat exchanger tubes placed in the heat sink, so that they can be closely combined with the heat sink to avoid loosening, increase the thermal conductivity of the heat exchanger, and expand the ends of the tubes. Mouth and flanging, in order to facilitate the next process. [0003] When the vertical tube expander expands the heat exchanger tube, the workpiece will shrink, so it needs to be fixed well; but because of the special shape of the U-shaped end of the heat exchanger tube, it is not easy to fix it with an ordinary clamping device. Various special-purpose U-shaped pipe clamping devices have also occurred, but it is very different because of the reasons of structure and manufacture, or complex structure, inconvenient manufacture, or unsatisfactory clamping effect. Contents of the invention [0004] T...

AI Technical Summary

Problems solved by technology

[0003] When the vertical tube expander expands the heat exchanger tube, the workpiece will shrink, so it needs to be fixed well; but because of the special shape of the U-shaped end of the heat exchanger tube, it is not easy to fix it with ordinary clamping devices

Various special U-shaped pipe clamping devices have also appeared, but due to structural and manufacturing reasons, they are very different, or have complex structures, inconvenient manufacturing, or unsatisfactory clamping effects

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