Helical coil forming machine |
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| 申请号 | US45374874 | 申请日 | 1974-03-22 | 公开(公告)号 | US3885605A | 公开(公告)日 | 1975-05-27 |
| 申请人 | DAYCO CORP; | 发明人 | LANG ERNEST U; | ||||
| 摘要 | A pair of large wire supply rolls are rotatably supported by a cantilevered tubular shaft, and corresponding wires extend from the rolls to a coil forming rotor which is also supported by a cantilevered tubular shaft aligned axially with the roll support shaft. Wire is withdrawn from the wire supply rolls by rotation of the rotor which includes precisely driven wheels for feeding the wires through corresponding sets of casting rollers to form a continuous double helix nonrotating coil. A non-rotating mandrel projects through the roll support shaft for supporting the helical coil as it is being formed and progresses axially between a set of endless belts which feed the continuous coil from the coil forming rotor and control the pitch of the wire turns of the coil. A disc brake system is mounted on the roll support shaft for breaking the rotation of the wire supply rolls to control the tension in the wires, and the roll support shaft is pivotable in a horizontal direction to facilitate loading of new wire supply rolls into the machine. The machine is also adapted to be used with only one wire supply roll when only a single helix nonrotating continuous coil is required. | ||||||
| 权利要求 | 1. Apparatus for continuously producing a nonrotating coil having helical wire turns of substantially uniform diameter, comprising means for rotatably supporting a plurality of wire supply rolls positioned in tandem relation, a coil forming rotor including means for receiving a wire from each of the wire supply rolls and for deforming the wires beyond their elastic limit into interfitting continuous wire turns, means for supporting said rotor for rotation on an axis substantially aligned with the axis of rotation of the wire supply rolls, means for rotating said rotor, means on said rotor for directing the wires from the corresponding wire supply rolls to said wire deforming means, means for guiding the coil axially from said rotor after the coil is formed by rotation of said rotor, means for feeding the wire coil from said rotor as the coil is being formed, and means for varying the speed of said feeding means relative to the speed of rotation of said rotor to provide for changing the pitch of the wire turns of said coil. 2. Apparatus as defined in claim 1 including means for braking the rotation of the wire supply rolls to control the tension in the wires extending from the rolls to said coil forming rotor. |
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