JP2015128775A - Wiring roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-slip type wiring roll capable of lowering the cost and reducing an installation space.SOLUTION: There are provided a plurality of dies 10 and 11 which are diametrically reduced by passing a metal wire 1. There are provided a plurality of capstans 12 and 13 for extracting the metal wire 1 from the dies 10 and 11. The capstans 12 and 13 rotate while winding the metal wire 1 without slip on the outer circumferences. There is provided a drive part 14 for driving the capstans 12 and 13 rotationally. There is also provided a planetary gear mechanism 15 for outputting the rotations inputted from the drive part 14, to the paired capstans 12 and 13.

Description

  The present invention relates to, for example, a wire drawing machine used for wire drawing of metal wires when producing tire cords.

  In general, when producing tire cords and the like, the diameter of the metal wire is reduced while being drawn by drawing using a wire drawing machine to set a predetermined diameter and increase its strength. It is used as a line.

  The wire drawing machine passes a metal wire through a die, winds it around a capstan on the downstream side, rotates the capstan, forcibly pulls the metal wire out of the die, reduces the diameter, and further in the direction of travel of the metal wire. A plurality of dies and capstans are arranged along the metal wire so that the diameter of the metal wire is gradually reduced.

  The metal wire drawn by this wire drawing machine is drawn in the advancing direction as the machining progresses, and the advancing speed increases. Therefore, there is a possibility that a deviation from the rotational speed of the capstan may occur. On the other hand, by adopting a slip type wire drawing machine that feeds by a dynamic friction force while sliding a metal wire, the deviation in speed can be absorbed.

  However, the slip-type wire drawing machine reduces the quality of the metal wire, such as the loss of energy required to operate the wire drawing machine and the embrittlement of the metal wire due to frictional heat, as the metal wire slides against the capstan. May occur, or the lubricant may deteriorate due to frictional heat.

  On the other hand, for example, Patent Document 1 discloses a non-slip type wire drawing machine in which a plurality of wire drawing units including a wire drawing die, a drive capstan, and a capstan drive motor are connected in series. The wire drawing machine prevents slippage between the drive capstan and the metal wire, and controls the rotation speed of the capstan drive motor that rotates the drive capstan based on the speed of the metal wire. .

JP-A-2005-103623 (Claim 1, paragraph numbers 0027, 0034, 0037, 0057)

  However, the wire drawing machine of Patent Document 1 increases the cost of the wire drawing machine by increasing the number of drive motors and control units by providing a drive motor for each of the plurality of capstans to control the rotation speed. There is a risk of increasing the installation space of the wire drawing machine.

  An object of the present invention is to provide a non-slip type wire drawing machine capable of reducing cost and reducing installation space.

  In order to achieve the above object, a wire drawing machine according to the present invention includes a plurality of dies that reduce the diameter by passing a metal wire, and a plurality of dies that are wound and rotated without sliding the metal wire around the outer periphery. And a drive unit that rotationally drives the capstan, and a planetary gear mechanism that outputs rotation input from the drive unit to a pair of capstans is provided.

  According to the above configuration, since the wire drawing machine is provided with the planetary gear mechanism, for example, the rotation input to the sun gear of the planetary gear mechanism from the drive unit is transmitted through the rotation of the outer ring gear and the revolution of the planetary gear. The two capstans can be driven to rotate by one drive unit.

  Here, the planetary gear mechanism can relatively rotate and revolve the remaining outer ring gear and the planetary gear by rotating the sun gear, for example. Moreover, the rotation of the outer ring gear and the revolution of the planetary gear when the sun gear is rotated are such that the revolution speed of the planetary gear decreases as the rotation speed of the outer ring gear increases and the planetary gear rotation decreases as the rotation speed of the outer ring gear decreases. The revolving speed of the gear is increased. Thus, without individually controlling the rotation speeds of the upstream and downstream capstans, for example, the balance of the rotation speeds of both capstans connected to the outer ring gear and the planetary gear is wound around these metal wires. Can be prepared automatically via

  In other words, when the rotational speed of the upstream capstan is too high relative to the downstream capstan, the upstream capstan tries to send out the metal wire excessively, so that the downstream capstan The load received from the metal wire is reduced. As a result, the downstream capstan tries to rotate faster, and the upstream capstan rotates accordingly, and the balance between the rotational speeds of both capstans is adjusted.

  On the other hand, when the rotational speed of the downstream capstan is too high relative to the upstream capstan, the load that the downstream capstan receives from the metal wire increases. As a result, the rotation of the capstan on the downstream side is slowed, and the rotation of the capstan on the upstream side is accelerated accordingly, and the balance between the rotational speeds of both capstans is adjusted.

  In addition, a wire drawing unit is configured by a die, a pair of capstans, a drive unit, and a planetary gear mechanism, and a plurality of wire drawing units for reducing the diameter of a common metal wire in stages are provided, and adjacent to the metal wire traveling direction. A dancer roller may be provided between the wire drawing units.

  According to this configuration, since the dancer roller is provided between the wire drawing units, the balance of the traveling speed of the metal wire is automatically adjusted by the planetary gear mechanism between the two capstans of the wire drawing unit. Variations in the traveling speed of the metal wire between the units can be absorbed by the dancer roller. In this case, since a dancer roller is provided between adjacent wire drawing units without providing a dancer roller between two capstans of the wire drawing unit, than when a dancer roller is provided between all capstans, The number of dancers can be reduced.

  Further, a displacement detection unit that detects the displacement of the dancer roller may be provided, and the rotational speed input from the drive unit may be controlled based on the displacement data detected by the displacement detection unit.

  According to this configuration, since the rotation input from the drive unit is controlled based on the displacement data of the dancer roller provided between the wire drawing units, the overall rotation speed of the two capstans of the wire drawing unit is controlled. The balance of the rotational speeds of both capstans can be adjusted with a planetary gear mechanism.

  In addition, a rotation detection unit that detects the rotation speed of the capstan may be provided, and the rotation speed input from the drive unit may be controlled based on rotation data detected by the rotation detection unit.

  According to this configuration, since the rotation input from the drive unit is controlled based on the rotation data of the capstan, the balance between the rotation speeds of both capstans is controlled while controlling the rotation speed of one of the capstans. Can be prepared by mechanism. The control based on the rotation data of the capstan can be used together with the control based on the displacement data of the dancer roller, and the rotation speed can be controlled based on the rotation data of both capstans. .

  As described above, according to the present invention, the planetary gear mechanism is used to rotationally drive the two capstans of the wire drawing machine with a single drive unit, thereby reducing the cost of the non-slip type wire drawing machine. At the same time, the installation space can be reduced.

  As a result, a non-slip type wire drawing machine is preferably used to reduce the energy loss caused by sliding the metal wire against the capstan, the quality of the metal wire becomes brittle due to frictional heat, and the frictional heat. Deterioration of the lubricating liquid can be suppressed. In addition, the non-slip type does not have the disadvantages of the slip-type wire drawing machine, so the metal surface area reduction rate (the reduction rate of the cross-sectional area due to diameter reduction) per die can be set large. Can be made more efficient.

Front view of the wire drawing machine according to the present invention Cross section of wire drawing machine (A) is a figure which shows a metal wire set attitude | position, (b) is a figure which shows a wire drawing process attitude | position. Side view of main parts of wire drawing machine Cross section of main parts of wire drawing machine AA sectional view of FIG. Diagram showing the operation of the planetary gear

  Hereinafter, the form for carrying out the wire drawing machine concerning the present invention is explained using a drawing.

  As shown in FIGS. 1 to 3, the wire drawing machine is a non-slip type wire drawing machine used for drawing a metal wire 1 such as a steel wire when producing a tire cord, for example. Between the unwinding roller 2 that supplies the previous metal wire 1, the plurality of wire drawing units 3 that reduce the diameter of the common metal wire 1 stepwise, and the wire drawing units 3 that are adjacent to each other in the traveling direction of the metal wire 1. A support roller 6 that supports the dancer roller 4 provided, a winding roller 5 that winds the metal wire 1 after wire drawing, and a winding roller 2, a wire drawing unit 3, the dancer roller 4, and the winding roller 5. And a liquid tank 9 for accumulating the lubricating liquid 7 and rotatably supporting the support box 6 via the rotation shaft 8, in the metal wire set posture of the support box 6 (FIG. 3A). (See Fig. 3 (b)). Set the metal wire 1 to the wire drawing unit 4 and in the wire drawing position. And performs the drawing in a state immersed set the metal wire 1 in the lubricating fluid 7 in the liquid tank 9.

  As shown in FIGS. 1 to 5, the wire drawing unit 3 includes an upstream die 10 and a downstream die 11 that reduce the diameter by passing the metal wire 1, and a plurality of times without sliding the metal wire 1 on the outer peripheral portion. The upstream capstan 12 and the downstream capstan 13 that rotate in the wound state and draw the metal wire 1 from the upstream die 10 and the downstream die 11 and the upstream capstan 12 and the downstream capstan 13 are rotationally driven. A drive unit 14 and a planetary gear mechanism 15 that outputs the rotation input from the drive unit 14 to the upstream capstan 12 and the downstream capstan 13 are provided.

  The upstream die 10 and the downstream die 11 have a die hole having a smaller diameter than that of the metal wire 1, and the diameter is reduced while the metal wire 1 is forcibly passed through the die hole and stretched in the length direction. ing. Further, the plurality of dies 10 and 11 for all the wire drawing units 3 are set to have a smaller diameter as the dies 10 and 11 located on the downstream side along the traveling direction of the metal wire 1. The diameter is gradually reduced.

  Both dies 10, 11 in each wire drawing unit 3 are fixed to the front side of the support box 6, and the die hole of the downstream die 11 is located on the front side in the front-rear direction than the die hole of the upstream die 10. Thus, the metal wires 1 whose directions change in each wire drawing unit 3 are prevented from interfering with each other.

  The upstream capstan 12 and the downstream capstan 13 are arranged on the front side of the support box 6, and the downstream capstan 13 is located on the front side of the upstream capstan 12 while matching the rotation center line. They are juxtaposed in the front-rear direction so as to be positioned.

  The upstream capstan 12 is located immediately downstream of the upstream die 10 and rotates in a state where the metal wire 1 is wound a plurality of times, thereby drawing the metal wire 1 from the upstream die 10. Further, the downstream capstan 13 is located immediately downstream of the downstream die 11 and rotates in a state where the metal wire 1 is wound a plurality of times, thereby drawing the metal wire 1 from the downstream die 11.

  The drive unit 14 includes a variable speed motor 16 installed on the top plate of the support box 6 and a belt transmission mechanism 17 that transmits the rotation of the variable speed motor 16 to the planetary gear mechanism 15. The variable speed motor 16 is a control unit. The rotation speed is controlled by the rotation speed of the planetary gear mechanism 15 via the belt transmission mechanism 17.

  As shown in FIGS. 2, 5 and 6, the planetary gear mechanism 15 includes an input shaft 18 to which rotation of the variable speed motor 16 is input, a sun gear 19 formed integrally with the input shaft 18, and a sun gear. A ring-shaped outer ring gear 20 located outside the 19, four planetary gears 21 meshing with the sun gear 19 and the outer ring gear 20, and a first output that is provided integrally with the outer ring gear 20 and supports the upstream capstan 12. It comprises a shaft 22 and a second output shaft 23 that rotatably supports the four planetary gears 21 and supports the downstream capstan 13.

  The input shaft 18 has a front end portion that enters the front plate of the support box body 6 and a rear end portion that has a round bar shape that protrudes toward the back side of the support box body 6, and is positioned inside the support box body 6. A sun gear 19 is formed at a portion to be operated. The input shaft 18 is rotatably supported by the back plate of the support box 6, and the belt transmission mechanism 17 is connected to the rear end portion thereof, and the sun gear 19 is rotated by the input from the drive unit 14.

  The first output shaft 22 has a cylindrical shape that covers the sun gear 19 at the rear end, and the front end is set to a length that protrudes to the front side of the support box 6. The outer ring gear 20 is provided in accordance with the position. The first output shaft 22 is rotatably supported by the front plate of the support box 6, supports the upstream capstan 12 at the front end, and rotates the outer ring gear 20 as the sun gear 19 rotates. The upstream capstan 12 is rotated.

  The second output shaft 23 has a cylindrical shape whose rear side covers the first output shaft 22, and is interposed between the input shaft 18 and the first output shaft 22, and the front end portion is the first output shaft 22. The four planetary gears 21 are rotatably supported by aligning the positions of the sun gear 19 and the outer ring gear 20 in the front-rear direction. The second output shaft 23 is rotatably supported by the input shaft 18 and the first output shaft 22, supports the downstream capstan 13 at the front end portion, and includes four planets as the sun gear 19 rotates. The downstream capstan 13 is rotated by the revolution of the gear 21.

  The second output shaft 23 is provided with an encoder 24 as a rotation detection unit that detects the rotation speed of the downstream capstan 13. Based on the rotation data detected by the encoder 24, the control unit is connected to the drive unit 14. Controls the input rotation speed.

  The dancer roller 5 is supported by a swingable arm 26 while receiving a load from the cylinder 25, and moves up and down to absorb fluctuations in the traveling speed of the metal wire 1 applied thereto.

  The swing shaft of the arm 26 is provided with an encoder 27 as a displacement detection unit that detects the displacement of the dancer roller 5. Based on the displacement data detected by the encoder 27, the control unit inputs rotation from the drive unit 14. Control the speed.

  Next, how the metal wire 1 is drawn using a wire drawing machine will be described.

  First, the support box 6 is rotated so that the front plate faces the front side, and is set to the metal wire setting posture. The unwinding roller 2 and the winding roller 5, the upstream die 10 of each wire drawing unit 3, and the downstream The side die 11, the upstream capstan 12, the downstream capstan 13, and the dancer roller 4 are exposed to the front side (see FIG. 3A).

  In this metal wire setting posture, the metal wire 1 drawn out from the unwinding roller 2 is hung on the upstream guide roller 28, passed through the upstream die 10, wound a plurality of times on the upstream capstan 12, and wound on the downstream guide roller 29. Hang, pass through the downstream die 11, wind around the downstream capstan 13 a plurality of times, hang around the dancer roller 4, and the setting of the metal wire 1 to the first wire drawing unit 3 is completed.

  Next, the metal wire 1 hung on the dancer roller 4 is set in the second and subsequent plurality of wire drawing units 3 in the same procedure as that set in the first wire drawing unit 3, and in the last wire drawing unit 3, The metal wire 1 is wound around the dancer roller 4 without being wound on the winding roller 5, and the setting of the metal wire 1 on the wire drawing machine is completed.

  After setting the metal wire 1, the support box 6 is rotated so that the front plate faces downward to be in a wire drawing posture, and the upstream die 10, the downstream die 11, the upstream side of each wire drawing unit 3. The capstan 12, the downstream capstan 13, and the dancer roller 4 are immersed in the lubricating liquid 7 in the liquid tank 9 (see FIG. 3B).

  In the wire drawing posture, by operating the wire drawing machine, the control unit drives the variable speed motor 16 to rotate, and the rotation is input to the input shaft 18 of the planetary gear mechanism 15 to rotate the sun gear 19.

  As shown in FIG. 7, when the sun gear 19 rotates (see FIG. 7A), the outer ring gear 20 and the four planetary gears 21 rotate or revolve relative to each other (FIG. 7B, ( c) and (d)), the first output shaft 22 integrally provided with the outer ring gear 20 rotates the upstream capstan 12, and the second output shaft 23 that rotatably supports the four planetary gears 21 is downstream. The side capstan 13 is rotated.

  When the upstream capstan 12 rotates, the metal wire 1 is forcibly pulled out from the upstream die 10, and when the downstream capstan 13 rotates, the metal wire 1 is forcibly pulled out from the downstream die 11. It is.

  The rotation of the outer ring gear 20 and the revolution of the planetary gear 21 are in a relationship in which the revolution speed of the planetary gear 21 becomes slower as the rotation speed of the outer ring gear 20 becomes faster. Is determined. 7B shows a state in which the revolution of the planetary gear 21 is stopped and the outer ring gear 20 is rotated at a high speed, and FIG. 7C shows a state in which the revolution of the planetary gear 21 and the rotation of the outer ring gear 20 are balanced. (D) shows a state in which the rotation of the outer ring gear 20 is stopped and the planetary gear 21 is revolved at high speed.

  The loads received by the outer ring gear 20 and the planetary gear 21 are loads received from the metal wire 1 wound by the upstream capstan 12 and the downstream capstan 13. In each wire drawing unit 3, the upstream capstan 12 and the downstream capstan 12 are loaded. The balance of the rotational speed of the capstan 13 is automatically adjusted to prevent the metal wire 1 from being broken or loosened.

  Further, since the control unit controls the rotational speed of the variable speed motor 16 based on the data from the encoders 24 and 27, the disconnection or slack of the metal wire 1 is prevented between the wire drawing units 3.

  When the metal wire 1 passes through the dies 10 and 11, the diameter of the metal wire 1 is reduced while being drawn stepwise, and the metal wire 1 is drawn into a metal wire 1 having a desired diameter. After the variable speed motor 16 is stopped, the support box 6 is returned to the metal wire setting posture, the processed metal wire 1 is removed, and the wire drawing is completed.

  According to the above configuration, in each wire drawing unit 3, the planetary gear mechanism 15 is used to adjust the rotational speed of the upstream capstan 12 and the downstream capstan 13, so the number of variable speed motors 16 in the entire wire drawing machine It is possible to adjust the fluctuation of the traveling speed due to the processing elongation of the metal wire 1 while halving.

  In addition, this invention is not limited to said embodiment, A change can be suitably added within the scope of the present invention. For example, the metal wire 1 is not limited to a tire cord and may be used for any purpose. Further, the planetary gear mechanism 15 inputs rotation to the sun gear 19 and outputs rotation of the outer ring gear 20 and revolution of the four planetary gears 21, as well as rotation or revolution of the outer ring gear 20 or the planetary gear 21. You may make it input and output from the remaining gears.

DESCRIPTION OF SYMBOLS 1 Metal wire 2 Unwinding roller 3 Wire drawing unit 4 Dancer roller 5 Winding roller 6 Supporting box body 7 Lubricating liquid 8 Rotating shaft 9 Liquid tank 10 Upstream die 11 Downstream die 12 Upstream capstan 13 Downstream capstan DESCRIPTION OF SYMBOLS 14 Drive part 15 Planetary gear mechanism 16 Variable speed motor 17 Belt transmission mechanism 18 Input shaft 19 Sun gear 20 Outer ring gear 21 Planetary gear 22 First output shaft 23 Second output shaft 24 Encoder 25 Cylinder 26 Arm 27 Encoder 28 Upstream guide roller 29 Downstream guide roller

Claims (4)

A plurality of dies that pass through a metal wire and reduce the diameter; a plurality of capstans that are wound around the outer periphery without sliding the metal wire; and a drive unit that rotationally drives the capstan; With
A wire drawing machine provided with a planetary gear mechanism for outputting rotation input from the drive unit to a pair of capstans.   The die, the pair of capstans, the drive unit, and the planetary gear mechanism constitute a wire drawing unit, provided with a plurality of wire drawing units that reduce the diameter of a common metal wire in stages, and in the traveling direction of the metal wire. The wire drawing machine according to claim 1, wherein a dancer roller is provided between adjacent wire drawing units.   The displacement detection unit for detecting the displacement of the dancer roller is provided, and the rotational speed input from the drive unit is controlled based on the displacement data detected by the displacement detection unit. Wire drawing machine.   The rotation detection part which detects the rotation speed of the capstan is provided, and the rotation speed inputted from the drive part is controlled based on the rotation data detected by the rotation detection part. The wire drawing machine according to 2 or 3.

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