Multi-point-location pipe expander

Abstract

The invention discloses a multi-point-location pipe expander. The pipe expander comprises a pair of shells which are oppositely arranged, a driving worm, a handle, a driving worm wheel, a driving rotary shaft and a pipe expanding assembly, wherein the pipe expanding assembly is rotatably arranged at the head of the driving rotary shaft, and comprises a pair of opposite pipe expanding petal rods, several reset spring coils, a pair of arc spring seat sheets and a pallet assembly, the pallet assembly comprises a pallet ring support, several reset torsional springs and several expanding pallets, the pipe expanding petal rods located between a first working position and a second working position, when the pipe expanding petal rods are in the first working position, the pipe expanding petal rodsare drawn close to each other to form a column, and when the pipe expanding petal rods are in the second working station, the pipe expanding petal rods are separated from each other outwards and squeeze the inner wall of a copper pipe at the same time. The multi-point-location pipe expander is convenient to operate, does not depend on electric power, and is suitable for pipe expanding work of thecopper pipe of multiple pipe diameters.

Description

technical field [0001] The present invention relates to a tool, more specifically a pipe expander. Background technique [0002] In the field of refrigeration, it is often necessary to expand the interface of the copper tube. The existing method generally uses multiple dedicated molds for tube expansion, which is quite inconvenient to operate. Contents of the invention [0003] The present invention mainly solves the technical problems existing in the prior art, thereby providing a pipe expander. [0004] Above-mentioned technical problem of the present invention is mainly solved by following technical scheme: [0005] The invention discloses a multi-point pipe expander, which is characterized in that the multi-point pipe expander includes: [0006] a pair of opposite shells; [0007] a driving worm; [0008] a handle, the handle is detachably arranged at the tail of the drive worm; [0009] a driving worm gear, the driving worm gear is matched with the driving worm; ...

AI Technical Summary

Problems solved by technology

[0002] In the field of refrigeration, it is often necessary to expand the interface of the copper tube. The existing method generally uses multiple dedicated molds to expand the tube, which is quite inconvenient to operate.

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