JP2006027874A - Electric wire supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire supply device optimum for supplying an electric wire of a minimum diameter, in particular, by stably applying low tension to the electric wire. <P>SOLUTION: This device is provided with a bobbin support disc 51 for detachably mounting a bobbin. A dancer plate 26 is oscillatably provided adjacently to the bobbin support disc 51. The dancer plate 26 is provided with a guide roll 31 directed in a direction parallel with a bobbin shaft 50 on an opposite side by holding a brake shoe 35 joined to the bobbin support disc 51 and a pivotal shaft part 27. The dancer plate 26 is energized by a coil spring 24 in a direction in which the brake shoe 35 presses the bobbin support disc 51. The electric wire wound on the bobbin is laid on the guide roll 31 and is supplied to a stranding wire machine. When excessive tension is applied to the electric wire, the dancer plate 26 is rotated against energizing force, and braking force of the brake shoe 35 is weakened to suppress tension. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric wire supply device that supplies electric wires to a stranded wire machine, and more specifically, an electric wire supply device that is suitable for supplying an extremely small diameter electric wire, in which low tension acts stably on the electric wires. It is related.

  In order to supply the electric wire to the stranding machine, it is necessary to apply tension to the electric wire, but it is desirable that the low tension is stable particularly when the electric wire has a very small diameter of about 0.03 mm.

  Conventionally, an electric wire feeder disclosed in Patent Document 1 is known. In the supply device described in Patent Document 1, the electric wire a wound around the winding drum 35 is drawn out through the fryer 8 with reference to the drawing, and the fryer 8 rotates in the direction of unwinding the electric wire a. An appropriate tension is applied to the electric wire a by the drawing speed and the rotational torque of the fryer 8 that follows the drawing speed. While the electric wire is being supplied, the drawing speed and feeding speed of the electric wire a constantly change, and a large tension may be momentarily applied to the electric wire a.

  In FIG. 4, when a predetermined tension or more is applied to the electric wire a, the vibration 14 is tilted counterclockwise by the pulling force of the electric wire a drawn from the pulley 15, and the eccentric cam 17 is moved to the roller. 19, the rod 18 is tilted clockwise around the fulcrum 20. Then, since the brake rod 16 is pushed down, the brake rod 11 is inclined counterclockwise around the support rod 13, and the brake piece 12 moves away from the brake board 6. In this way, since the braking force of the brake piece 12 against the brake board 6 is weakened, the flyer 8 rotates in response to the tension of the electric wire a, and the feeding speed from the reel drum 35 shifts to the non-braking state and the electric wire The tension applied to a is relieved.

  On the contrary, when the tension applied to the electric wire a falls below a predetermined value, the tension of the electric wire a drawn from the pulley 15 is weakened, so that the vibration 14 is inclined and restored in the clockwise direction, and the eccentric cam 17 is As a result, the pressing force of 19 is also weakened, whereby the rod 18 is tilted counterclockwise about the fulcrum 20 and moved in the direction of lifting the brake rod 16. Then, contrary to the above case, the braking force of the brake piece 12 on the brake disc 6 is increased, and the tension on the electric wire a can be increased.

  As described above, the electric wire supply device described in Patent Document 1 automatically adjusts the tension applied to the electric wire a to give an appropriate tension, but between the brake piece 12 and the brake board 6, Since many members such as the flange 14, the eccentric cam 17, the roller 19, the flange 18, and the brake rod 16 are interposed, the tension cannot be controlled directly. For this reason, there is a problem that the response to a change in tension is dull, particularly low tension is unstable, and a high-quality stranded wire cannot be obtained when the diameter of the electric wire is as small as 0.03 mm.

Japanese Patent Laid-Open No. 54-17468

  An object of the present invention is to provide a wire supply device that is suitable for supplying a very small diameter electric wire, in which low tension is stably applied to the electric wire.

The first of the solving means includes a bobbin support plate on which a bobbin is detachably mounted, a dancer plate is provided slidably adjacent to the bobbin support plate, and a brake shoe that joins the dancer plate to the bobbin support plate; A guide roll directed in a direction parallel to the bobbin shaft is provided on the opposite side of the brake shoe across the pivot portion, and the dancer plate is urged in a direction in which the brake shoe presses the bobbin support board, The electric wire wound around the bobbin is hooked on the guide roll and then supplied to the stranding machine. When excessive tension is applied to the electric wire, the dancer plate rotates against the urging force and the braking force of the brake shoe It is characterized by suppressing the tension by weakening.
A second solution means is characterized in that, in the first solution means, the dancer plate is biased by a coil spring.
A third solving means is the second solving means characterized in that the coil spring can change the mounting position and adjust the elastic force.

  The present invention is provided with a brake shoe that joins a bobbin support plate on which a bobbin is detachably mounted. The brake shoe is provided with a guide roll on a swingable dancer plate, and the brake shoe further includes a bobbin support plate. If the wire is excessively tensioned while being pulled out, the wire pulls on the guide roll and turns the dancer plate, and the braking force against the bobbin support plate of the brake shoe It is possible to relieve excessive tension by suppressing the tension of the dancer plate as well as a guide roll for detecting the tension generated in the electric wire and a brake shoe for suppressing the tension. Since no parts are required, the response to changes in tension is quicker compared to conventional structures. The tension low is stable, is effective in a very small diameter of the wire supply.

  FIG. 1 is a perspective view of an entire wire supply device according to the present invention, FIG. 2 is a component diagram of a brake member and a sectional view of a dancer plate mounting portion, and FIG. 3 is a component diagram of a bobbin member and a sectional view of a bobbin shaft mounting portion. 4 and 4 are front views showing the brake shoe portion. The electric wire supply apparatus shown in FIG. 1 has one bobbin shaft, and feeds out one electric wire from the bobbin shaft. Moreover, although the strand wire machine is not illustrated, for example, when the twist wire machine twists 7 electric wires, 7 wire supply devices are used.

  The electric wire supply device includes a machine casing 1, a brake member 2 provided on the machine casing 1, and a bobbin member 5. The machine frame 1 is formed with machine frame cover plates 11 that are bent in a direction orthogonal to the machine frame back plate 10 at both ends of the machine frame back plate 10, and feeds an electric wire m to the machine frame cover plate 11. A guidance guide unit 12 is provided.

  The brake member 2 has an inner frame plate material 20 that is joined to the machine frame back plate 10 of the machine frame 1, and the inner frame plate material 20 has a tension obtained by bending the portion at right angles at both ends parallel to the longitudinal direction. A base 21 is formed. The tension base 21 is formed with a long hole 22 along the longitudinal direction, and a slide pin 23 is slidably accommodated in the long hole 22. A coil spring 24 is attached to the slide pin 23 and the slide pin 23 is fixed to the tension base 21 by a wing nut 25.

  A dancer plate 26 is provided at the end portion of the inner frame plate member 20 in the extending direction of the coil spring 24 by a mounting bolt 27 so as to be freely slidable. Reference numeral 28 denotes a bearing, 29 denotes a boss, and 30 denotes a female screw for fixing the boss 29. The dancer plate 26 is rotatably provided with a guide roll 31 at one end facing the outside of the inner frame plate member 20 in a front view. The guide roll 31 is a plastic hollow body, and is inserted into a guide roll shaft 32 fixed to the dancer plate 26 via a bearing 33. In addition, the guide roll 31 is formed in the same length as the bobbin shaft mentioned later, and the electric wire m drawn | fed out from the bobbin shaft seems to be drawn | fed out to a strand wire machine through this guide roll 31 and the said guidance guide part 12. FIG. It has become.

  A brake shoe 35 is rotatably provided on the dancer plate 26 by a small screw 36 at the end facing the inner frame plate 20 on the opposite side across the mounting bolt 27 in front view. Reference numeral 37 denotes a collar inserted into the machine screw 36. The brake shoe 35 is made of felt. A coil spring 24 fixed to the slide pin 23 is attached to the dancer plate 26 on the opposite side of the attachment position of the brake shoe 35. The dancer plate 26 attached in this manner is freely swingable around the attachment bolt 27, and is urged clockwise in a front view around the attachment bolt 27 by the elasticity of the coil spring 24.

  The bobbin member 5 has a bobbin shaft 50 oriented in a direction parallel to the guide roll 31 of the brake member 2, and the bobbin shaft 50 is in the vicinity of the mounting position of the dancer plate 26 provided on the machine body back plate 10. A bobbin support board 51 that also serves as a brake drum is rotatably provided via a bearing 52 at the base end. Further, the bobbin shaft 50 is provided with a small-diameter portion 50a having a tip portion formed in a small diameter. Reference numeral 53 denotes a wedge coupling member inserted into the small diameter portion 50a of the bobbin shaft 50 via a bearing 54. The wedge coupling member 53 has a wedge-shaped protruding portion 53a facing in the axial direction, and when the bobbin 60 is mounted on the bobbin shaft 50. The protrusion 53a of the wedge coupling member 53 is inserted between the bobbin shaft 50 and the shaft hole of the bobbin 60 to couple them together.

  The bobbin shaft 50 protruding from the wedge coupling member 53 is provided with a coil spring 55, and a retaining plate 56 is rotatably provided by a pin 57 at the tip of the bobbin shaft 50. A washer 58 is inserted between the coil spring 55 and the retaining plate 56.

  In the bobbin member 5, the bobbin shaft 50 is provided in a direction parallel to the guide roll 31 of the brake member 2, and the brake shoe 35 provided on the dancer plate 26 is joined to the bobbin support board 51.

  Referring to FIG. 4, dancer plate 26 is rotatable about mounting bolt 27 and is biased clockwise by coil spring 24 in a front view, so that brake shoe 35 provided on dancer plate 26 is provided. Is joined to the bobbin support board 51 by an appropriate pressing force to apply braking to the bobbin support board 51.

  In the present invention, the bobbin 60 around which the electric wire m is wound is first inserted into the bobbin shaft 50 with the wedge coupling member 53 removed, and then the wedge coupling member 53 is fitted to the coil spring 55 and The washer 58 is fitted and the retaining plate 56 is tilted, and the wedge coupling member 53 is pushed into the shaft hole of the bobbin 60 by the elasticity of the coil spring 55 to press the bobbin 60 against the bobbin support board 51.

  The bobbin 60 attached to the bobbin shaft 50 rotates integrally with the bobbin support board 51. Therefore, the electric wire m is drawn from the bobbin 60, and the drawn electric wire m is drawn on the guide roll 31 and then fed out to the stranded wire machine through the guide guide portion 12 provided on the machine frame casing 11. Since moderate braking is applied to the bobbin support board 51 by the brake shoe 35, the electric wire m is supplied to the stranded wire machine in a tensioned state.

  If excessive tension is generated in the wire m while the wire m is being fed, the tension of the wire m increases, so the guide roll 31 is pulled strongly, and the dancer plate 26 is rotated counterclockwise against the elasticity of the coil spring 24. The brake force of the brake shoe 35 is weakened and the tension applied to the electric wire m is suppressed. On the contrary, when the necessary tension is not generated on the electric wire m, the elasticity of the coil spring 24 is won and the dancer plate 26 is rotated clockwise by the elasticity of the coil spring 24, so that the brake shoe 35 Increase the braking force to give tension to the wire m. Since the mounting position of the coil spring 24 can be changed, the optimum braking force can be obtained by adjusting the elasticity of the spring.

  By repeating the above operation, an appropriate tension is always applied to the electric wire m and supplied to the stranding machine, so that a high-quality electric wire can be manufactured.

1 is an overall perspective view showing an electric wire supply device according to the present invention. The brake member is shown, (a) is component drawing, (b) is sectional drawing of a dancer plate attachment part. The bobbin member is shown, (a) is component drawing, (b) is sectional drawing of a bobbin shaft attaching part. The front view which shows a dancer plate attachment part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Machine frame 2 Brake member 5 Bobbin member 10 Machine frame back plate 11 Machine frame board 12 Guidance guide part 20 Inner frame board material 21 Tension base 22 Long hole 23 Slide pin 24 Coil spring 25 Wing nut 26 Dancer plate 27 Mounting bolt 28 Bearing 29 Boss 30 Child screw 31 Guide roll 32 Guide roll shaft 33 Bearing 35 Brake shoe 36 Machine screw 37 Collar 50 Bobbin shaft 51 Bobbin support board 52 Bearing 53 Wedge coupling member 54 Bearing 55 Coil spring 56 Detach plate 57 Pin 58 Washer 60 Bobbin

Claims (3)

  An electric wire is supplied to a stranding machine, and includes a bobbin support plate (51) on which a bobbin is detachably mounted, and a dancer plate (26) is provided in a freely swingable manner adjacent to the bobbin support plate. The plate is provided with a guide roll (31) parallel to the bobbin shaft (50) on the opposite side of the brake shoe with the brake shoe (35) joined to the bobbin support plate on the opposite side of the pivot shoe. The brake shoe is urged in the direction of pressing the bobbin support board, and the electric wire wound around the bobbin is applied to the guide roll and then supplied to the stranded wire machine, and an excessive tension is applied to the electric wire. And the dancer plate is rotated against the urging force to weaken the braking force of the brake shoe to suppress the tension.   The electric wire feeder according to claim 1, wherein the dancer plate (26) is biased by a coil spring (24). The electric wire supply device according to claim 2, wherein the coil spring (24) is capable of adjusting an elastic force by changing an attachment position.

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