HOT FORMED COILING MACHINE

摘要

The present invention relates to a hot coiling machine, and an object of the invention is to provide a hot coiling machine that produces coil springs having various coil shapes and diameters from a heated wire without a mandrel. The present invention provides a hot coiling machine including: a center roll rotating by a drive unit; a feeding roll disposed near the center roll and facing an external surface of the center roll, the center roll being configured to move by a first positioning unit and being rotated by a drive unit thus moving a wire together with the center roll; a forming roll for forming the wire into a coil shape; and a pitch control unit disposed near the forming roll to come into contact with the coiled wire and pushing the coiled wire to provide the coiled wire with a desired pitch.

主权项

1. A hot coiling machine comprising:
a center roll 110 adapted to rotate by a rotational force generated from a drive unit 200; a feeding roll 120 disposed near the center roll 110 and having an external surface facing an external surface 110a of the center roll 110, the center roll 110 being configured to move close to or away from the center roll 110 by means of a first positioning unit 310 provided at a body 100 and being rotated by a rotational force generated from a drive unit 200 thus moving a wire together with the center roll 110; at least one forming roll 130 for forming the wire transferred by rotations of the center roll 110 and the feeding roll 120 into a coil shape; and a pitch control unit 140 that is disposed near the at least one forming roll 130 to come into contact with the coiled wire exiting the at least one forming roll 130, and which pushes a lateral surface of the coiled wire exiting the at least one forming roll 130 to provide the coiled wire with a desired pitch.