Tube bending device and tube bending method

Abstract

A tube bending device and a tube bending method, which simplify and miniaturize the tube bending device. A pipe chuck assembly is mounted on a mobile cart that reciprocates along a linear direction on the base, and includes: a chuck support table that is driven and rotated by a chuck rotation unit installed on the mobile cart; mounted on the chuck support A pair of chuck brackets on the left and right on the table; a pair of chuck molds, which are moved in the direction of approaching or departing from the drive units respectively fixed to the chuck brackets, and grooves for fitting the half circumference of the pipe are provided on the opposite surfaces , the bending device is equipped with a bending roller mold and a fastening mold located in front of the stop position of the front end of the mobile trolley, and the pipe inserted from above is clamped by a pair of chuck molds on the mobile trolley. The disc rotation unit rotates the pipe and moves the movable carriage to the stop position at the front end, clamps the pipe with the bending roller die and the fastening die, and bends the pipe in three-dimensional directions, and moves the movable carriage back to the predetermined position during the bending process. Location.

Description

technical field [0001] The present invention relates to a tube bending device and a tube bending method. Specifically, it is suitable for three-dimensionally bending a tube in which a high-voltage cable for underfloor wiring is passed through a hollow portion in an electric vehicle or a hybrid vehicle. Tube bending device and tube bending method. Background technique [0002] In an electric vehicle or a hybrid vehicle, the wiring harness that is wired between the battery and the inverter, and between the inverter and the motor, etc. contains high-voltage cables that are sources of noise, so they are routed to the underfloor under the floor , in the underfloor wiring area, high-voltage cables may be passed through metal pipes for wiring as protection of wire harnesses and shielding measures for high-voltage cables. One end of the tube passing through the high-voltage cable is bent upward to be connected to the battery mounted on the floor, and the other end is also bent upwa...

AI Technical Summary

Problems solved by technology

[0010] The tube bender proposed in Patent Document 1 inserts the core gold rod 100 into the hollow of the tube to be bent to hold the tube, so there is a problem that it cannot be used when the wire harness is passed through the inside of the tube.

[0011] In addition, in the above-mentioned pipe bender, it is not disclosed that twisting is applied to the pipe being bent, and it is not known whether the pipe can be bent in three-dimensional directions.

[0012] On the other hand, if the above-mentioned manipulator widely used in the past is used, it is complicated, enlarged and costly, and there are problems of difficulty in operation and maintenance.

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