Twisting apparatus of electric wires

• US 20040050446A1
• Filed: 06/04/2003
• Published: 03/18/2004
• Est. Priority Date: 09/12/2002
• Status: Abandoned Application

• Current Assignee: Sumitomo Wiring Systems Limited (Sumitomo Corporation)
• Original Assignee: Sumitomo Wiring Systems Limited (Sumitomo Corporation)
• Inventors: Ichikawa, Masaharu
• Application Number:
  US10/455,102
• Publication Number:
  US 20040050446A1
• Time in Patent Office: Days
• US Class Current: 140/149
• CPC Class Codes: B21F 7/00 Twisting wire; Twisting wire together for connections of limited size B21F15/04
• CPC Class Codes: H01B 13/02 Stranding-up

Abstract

A twisting apparatus of electric wires includes a first holding unit (1) for holding first ends of a pair of electric wires (W1, W2), a second holding unit (2) for holding second ends of the electric wires (W1, W2), and a twist drive unit (4) for rotating the first holding unit (1) to twist the electric wires (W1, W2). The second holding unit (2) includes a pair of support members (27) that rotate together with the first ends of the electric wires (W1, W2), and a rotary synchronous mechanism (28) that rotates both support members (27) at the same speed and in the same direction by transmitting a rotary force from the one support member (27) to the other support member (27) when the one support member (27) rotates.

Claims

1. A twisting apparatus of electric wires comprising:

a first holding unit (1) for holding first ends of a pair of electric wires (W1;

W2);

a second holding unit (2) for holding second ends of said electric wires (W1;

W2); and

a twist drive unit (4) for rotating said first holding unit (1) to twist said electric wires (W1;

W2);

said second holding unit (2) including;

a pair of supports (27) that rotate together with said first ends of said electric wires (W1;

W2); and

a rotary synchronous mechanism (28) that rotates both supports (27) at the same speed and in the same direction by transmitting a rotary force from the one support (27) to the other support (27) when the one support (27) rotates.

2. The twisting apparatus of electric wires of claim 1, wherein said second holding unit (2) has a biasing member (29) for biasing both of said supports (27) in directions in which said electric wires (W1;

W2) are subject to tension stresses.

3. A twisting apparatus of electric wires comprising:

a first holding unit (1) for holding first ends of a pair of electric wires (W1;

W2);

a second holding unit (2) for rotatably holding second ends of said electric wires (W1;

W2);

a twist drive unit (4) for rotating said first holding unit (1) to twist said electric wires (W1;

W2);

a third holding unit (3) disposed between said first and second holding units (1;

2) for holding said electric wires (W1;

W2) with each of said electric wires (W1;

W2) being allowed to rotate but being restricted from rotating together with the other of the electric wires (W1;

W2) upon rotation of said first holding unit (1);

a slide drive unit (60) for moving said third holding unit (3) from a start position adjacent said first holding unit (1) to an end position adjacent said second holding unit (2); and

control means (64) for controlling said slide drive unit (60) to move said third holding unit (3) at a speed corresponding to a rotary speed of said first holding unit (1).

4. The twisting apparatus of electric wires of claim 3, wherein said second holding unit (2) includes first and second supports (27) that rotate together with said first ends of said electric wires (W1;

W2); and

a rotary synchronous mechanism (28) that rotates both said supports (27) at a uniform speed and in the same direction by transmitting a rotary force from the first support (27) to the second support (27) when the first support (27) rotates.

5. The twisting apparatus of electric wires of claim 4, wherein said second holding unit (2) is provided with a biasing member (29) for biasing said both supports (27) in directions in which said electric wires (W1;

W2) are subject to tension stresses.