Unwinding adjustment device for wire or materials containing several wires

• US 6,237,383 B1
• Filed: 12/06/1999
• Issued: 05/29/2001
• Est. Priority Date: 06/05/1997
• Status: Expired due to Fees

• Current Assignee: Witels Apparate-Maschinen Albert GmbH & Company KG
• Original Assignee: Witels Apparate-Maschinen Albert GmbH & Company KG
• Inventors: Albert, Eckehard
• Primary Examiner(s): Crane, Daniel C.
• Application Number:
  US09/445,307
• Time in Patent Office: 540 Days
• Field of Search: 72/183, 72/160, 72/162, 72/164, 72/165, 242/417.3
• US Class Current: 72/183
• CPC Class Codes: B21C 47/20 the unreeled material moving transversely to the tangent line of the drum, e.g. axially, radially
• CPC Class Codes: B65H 59/36 Floating elements compensating for irregularities in supply or take-up of material buffer storage devices B65H51/20

Abstract

An unwinding device for wire or materials containing several wires, having a rotating support for a reel, a coil or the like and a folding roller allocated to a processing device. According to this invention, a dancer is positioned between the support and the folding roller. A constant direction for unwinding and winding is maintained in such as way that the unwound or wound material is directed along the same plane of curvature as the curvature of the reel devoid of torque.

Claims

1. In a pay-off reel straightening apparatus for a wire material wherein the apparatus has a pivotal receiving means (8) for a reel (9) and has a bending roller (18) assigned to a processing apparatus (19), the improvement comprising:

the processing apparatus (19) being a straightening apparatus, a dancer (13) interposed between the receiving means (8) and the bending roller (18), and a constant force for reeling off the wire material and a discharge direction feeding the wire material into the bending roller (18) being maintained so that the wire material is straightened free of torque in a plane parallel to a plane containing a curvature of the reel.

2. In the pay-off reel straightening apparatus according to claim 1, wherein an additional torque is applied to the bending roller (18).

3. In the pay-off reel straightening apparatus according to claim 1, wherein a destressing straightening device (20) is arranged between the bending roller (18) and the processing apparatus (19).

4. In the pay-off reel straightening apparatus according to claim 1, wherein the dancer (13) is fitted in a guide adapted to provide an up movement and a down movement.

5. In the pay-off reel straightening apparatus according to claim 1, wherein the wire material passes in a loop form by more than 180°

around the bending roller (18).

6. In the pay-off reel straightening apparatus according to claim 1, wherein at least one of the bending roller (18) and the receiving means (8) are arranged in a level adjustable manner.

7. In the pay-off reel straightening apparatus according to claim 1, wherein the bending roller (18) is coated with a material that enhances a friction coefficient.

8. In a pay-off reel straightening apparatus for a wire material wherein the apparatus has a pivotal receiving means (8) for a reel (9) and has a bending roller (18) assigned to a processing apparatus (19), the improvement comprising:

the processing apparatus (19) being a straightening apparatus, a dancer (13) interposed between the receiving means (8) and the bending roller (18), and a constant force for reeling off the wire material and a discharge direction feeding the wire material into the bending roller (18) being maintained so that the wire material is straightened free of torque in a plane parallel to a plane containing a curvature of the reel, and the dancer (13) being a storing means comprising a plurality of deflection rollers (11).

9. In the pay-off reel straightening apparatus according to claim 8, wherein a spacing (A) between the receiving means (8) for the reel (9) and a first said deflection roller (11), between the first said deflection roller (11) and each of the following siad deflector rollers (11), between a last said deflection roller (11) and the bending roller (18), and between the bending roller (18) and the processing device (19) is less than or equal to D which represents a prevailing diameter of one of the reel (9), the preceding aid deflector rollers (11) and the bending roller (18).

10. In the pay-off reel straightening apparatus according to claim 9, wherein a diameter D of each said deflection roller (11) for a defined, elastic deflection of the wire material is governed by $D\ge$

d

 



ERp0

.2

wherein d represents a diameter, E represents a modulus of elasticity and R_p0.2 represents a technical yield point of the wire material.

11. In the pay-off reel straightening apparatus according to claim 10, wherein to bring about a constant bending of the wire material in the plane of curvature, a diameter D of the bending roller 18 is governed by $D\ge$

d

 



ERp0

.2

wherein d represents a diameter, E represents a modulus of elasticity and R_p0.2 represents a technical yield point of the wire material.

12. In the pay-off reel straightening apparatus according to claim 11, wherein an additional torque is applied to the bending roller (18).

13. In the pay-off reel straightening apparatus according to claim 12, wherein the additional torque is a braking moment.

14. In the pay-off reel straightening apparatus according to claim 13, wherein a destressing straightening apparatus (20) is arranged between the bending roller (18) and the processing device (19).

15. In the pay-off reel straightening apparatus according to claim 14, wherein the destressing straightening device (20)comprises two equally sized pivotal rollers (22, 23) arranged symmetrically with respect to one another on a pivotal support element (25).

16. In the pay-off reel straightening apparatus according to claim 15, wherein the dancer (13) is fitted in a guide adapted to provide an up movement and a down movement.

17. In the pay-off reel straightening apparatus according to claim 16, wherein the wire material passes in a loop form by more than 180°

around the bending roller (18).

18. In the pay-off reel straightening apparatus according to claim 17, wherein at least one of the bending roller (18) and the receiving means (8) are arranged in a level adjustable manner.

19. In the pay-off reel straightening apparatus according to claim 18, wherein the bending roller (18) is coated with a material that enhances a friction coefficient.

20. In a pay-off reel straightening apparatus for a wire material wherein the apparatus has a pivotal receiving means (8) for a reel (9) and has a bending roller (18) assigned to a processing apparatus (19), the improvement comprising:

the processing apparatus (19) being a straightening apparatus, a dancer (13) interposed between the receiving means (8) and the bending roller (18), and a constant force for reeling off the wire material and a discharge direction feeding the wire material into the bending roller (18) being maintained so that the wire material is straightened free of torque in a plane parallel to a plane containing a curvature of the reel, wherein a spacing (A) between the receiving means (8) for the reel (9) and a first deflection roller (11) of a plurality of deflection rollers (11), between the first deflection roller (11) and each following said deflector roller (11), between a last deflection roller (11) and the bending roller (18), and between the bending roller (18) and the processing device (19) is less than or equal to D which represents a prevailing diameter of one of the reel (9), the deflector rollers (11) and the bending roller (18).

21. In a pay-off reel straightening apparatus for a wire material wherein the apparatus has a pivotal receiving means (8) for a reel (9) and has a bending roller (18) assigned to a processing apparatus (19), the improvement comprising:

the processing apparatus (19) being a straightening apparatus, a dancer (13) interposed between the receiving means (8) and the bending roller (18), and a constant force for reeling off the wire material and a discharge direction feeding the wire material into the bending roller (18) being maintained so that the wire material is straightened free of torque in a plane parallel to a plane containing a curvature of the reel, wherein a diameter D of each said deflection roller (11) for a defined, elastic deflection of the wire material is governed by $D\ge <br><br>\frac{d<br><br>\text{\hspace{1em}<br><br>}<br><br>E}{R_{\mathrm{p0}<br><br>\mathrm{.2}}}$

wherein d represents a diameter, E represents a modulus of elasticity and R_p0.2 represents a technical yield point of the wire material.

22. In a pay-off reel straightening apparatus for a wire material wherein the apparatus has a pivotal receiving means (8) for a reel (9) and has a bending roller (18) assigned to a processing apparatus (19), the improvement comprising:

the processing apparatus (19) being a straightening apparatus, a dancer (13) interposed between the receiving means (8) and the bending roller (18), and a constant force for reeling off the wire material and a discharge direction feeding the wire material into the bending roller (18) being maintained so that the wire material is straightened free of torque in a plane parallel to a plane containing a curvature of the reel, wherein to bring about a constant bending of the wire material in the plane of curvature, a diameter D of the bending roller 18 is governed by $D\ge <br><br>\frac{d<br><br>\text{\hspace{1em}<br><br>}<br><br>E}{R_{\mathrm{p0}<br><br>\mathrm{.2}}}$

wherein d represents a diameter, E represents a modulus of elasticity and R_p0.2 represents a technical yield point of the wire material.