JPH0329483B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a wire winding device used in a wire drawing machine or the like.

<Prior Art> In a conventional wire winding device, a toss without a built-in drum arm is used as a toss portion that grips the starting end of a wire rod. In this case, it takes time to draw out the drawer using a separately prepared chained tongs and to attach and detach the tongs. In addition, in the case of a tons without an arm, the length from the die located on the front side of the wire winding device to the tons is long. This is economically disadvantageous because it requires pre-setup time and a length-setting device for pre-setting work to reduce the diameter of the wire.

Conventionally, in order to solve this problem, as shown in Figs. 12 and 13, an automatic release tons with a built-in drum arm was used, and the arm was rotated so that the tip of the tons was brought as close to the die as possible. The length of the tip was shortened to reduce the pre-setup time.

The automatic release tons 50 includes a chuck device 51 for gripping the wire 1 and an air cylinder 5 for moving the chuck device 51 into and out of the winding drum 8.
2, and an arm 53 that swingably supports the chuck device 51.

As shown in FIG. 13, the chuck device 51 includes a chuck claw 54 that is slidably mounted along the side wall 51b of the device main body 51a, and a cylinder 55 that slides the chuck claw 54 in the gripping direction of the wire 1. It consists of

A hole 56 is formed on the tip side of the main body 51a, and the air cylinder 52 is attached via a shaft 52a. Further, the hole 5 of the chuck claw 54
A pin 57 attached to the cylinder 55 is inserted into and out of the cylinder 4a. Further, a presser plate 58 for pressing the chuck claw 54 against the main body 51a is bolted.

The arm 53 has one end rotatably supported by the drum 8 via an arm shaft 53a, and the other end rotatably supported by the chuck device 51 via a mounting shaft 53b.

Then, the wire 1 is held between the chuck claws 54 and the wire 1 is gripped by moving the chuck claws 54 along the side wall 51b of the main body 51a in a direction to tighten the wire 1 using the cylinder 55.

<Problems to be solved by the invention> However, when a wire is subjected to cold drawing, residual stress in the wire is generated due to non-uniform deformation when passing through a die, and tensile stress is generated at the outer periphery and tensile stress at the center. Compressive stress occurs at this point. Furthermore, when the wire is wound around the winding drum 8, bending stress is applied to the wire. In particular, large diameter wire rods (φ18mm to φ30mm) and high tensile strength,
In a wire rod with a high area reduction ratio, the chuck claw is pulled in a direction that tightens the wire rod due to the tensile stress of the wire rod. Further, the wire rod may protrude due to bending stress.

Therefore, when releasing the wire from the tons,
The claw of the chuck device gets caught in the wire,
There is a problem with not being able to release it properly.

SUMMARY OF THE INVENTION In view of the above problems, the present invention aims to provide a wire winding device that can easily and reliably release the wire.

<Means for solving the problems> The means for solving the problems according to the present invention are shown in FIGS.
As shown in FIG. 1, a chuck device 10 for gripping the starting end of the wire rod 1 is provided in an opening 9 formed on the outer periphery of the wire winding drum 8, and the chuck device 10 can be moved in and out of the winding drum 8. An arm 17 is provided, and the arm 17 is connected to the arm shaft 2 on the winding drum 8.
6, the wire rod winding device is rotatably supported through the opening 9, and includes a clamp device 11 which is disposed on the rear side of the chuck device 10 in the rotational direction of the winding drum 8 and clamps the wire rod. and the clamping device 1 so that the wire 1 is in a relaxed state B when the wire 1 is released from the chuck device 10.
A moving device 12 is provided for moving the chuck device 10 holding the wire rod 1 in the direction of the clamp device 11 in the wire rod clamping posture of the wire rod 1, and the moving device 12 locks the lock shaft 36 on the winding drum 8. The lock lever 35 is comprised of a lock lever 35 that is swingably supported through the lock lever 35, and a lock lever cylinder 37 that swings the lock lever 35 so as to change the wire rod 1 between a tensioned state A and a relaxed state B. , when the wire rod 1 is released from the chuck device 10, the push-in portion 38 engages with the lock receiving portion 23 of the chuck device 10, and when the wire rod 1 is wound around the winding drum 8, the wire rod 1 is in the tension state A. It has a lock portion 39 that contacts the arm 17 and restricts the inward rotation of the arm 17 around the arm axis.

<Function> In the above-mentioned means for solving the problem, in order to draw the wire 1, the wire 1 guided to the winding drum 8 is clamped and held by the chuck device 10. Thereafter, when the winding drum 8 is rotated at an inching speed in the direction of the arrow shown in FIG. go. Then, a clamp device 11 is used to fix the tip of the wire 1 so that it does not move.

Thereafter, the winding drum 8 is rotated until the predetermined number of turns is reached to wind the wire 1, and the wire holding device 13 is brought into contact with the wire 1 to prevent the wire 1 from coming off the winding drum 8.

Next, when releasing the wire 1 from the chuck device 10, the chuck device 10 is moved in the direction of the clamp device 11 by the moving device 12. Then, the wire 1 becomes relaxed state B, and the chuck device 1
Wire 1 can be easily released from 0.

Thereafter, when the clamp device 11 is opened, the wire rod 1 is released from the winding drum 8 without stopping the device.

Therefore, by using the clamping device 11 together with the chuck device 10 to grip and hold the wire 1, and moving the chuck device 10 by the moving device 12, the tension in the wire 1 is canceled out and the wire 1 is released. You can prevent future failures.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 11. FIG. 1 is a plan view of a wire winding device showing an example of the present invention, and FIG. Similarly, FIG. 3 is a side view of the chuck device, FIG. 4 is a front view thereof, FIG. 5 is an exploded perspective view thereof, FIG. 6 is a side view of the clamp device, and FIG. 7 is a side view of the chuck device.
8 is a plan view of the wire holding device, FIG. 9 is a plan view of a wire drawing machine using the wire winding device of the present invention, and FIG. 10 is a front view thereof. FIG. 11 is a process block diagram of the wire winding operation.

First, the overall outline of a trade-in wire drawing machine using the present invention will be explained based on FIGS. 9 and 10. This wire drawing machine has a wire rod feeding device 2 for feeding the wire rod 1.
, a bridge straightening device 3 for straightening the wire rod 1 led out from the feeding device 2, a die device 4 for reducing the diameter of the wire rod 1 fed out from the bridge straightening device 3, and the die device a guide device 5 for guiding the wire rod 1 coming out from the wire rod winding device 4 to a wire rod winding device 7;
A wire winding device 7 of the present invention is provided for winding the wire rod and dropping the wire rod onto a pedestal 6 below the wire rod winding device 7.

Here, since the feeding device 2, the bridge straightening device 3, the die device 4, and the guiding device 5 have generally known structures, a detailed explanation of their configurations will be omitted.

As shown in the drawing, the wire winding device 7 of the present invention includes a chuck device 10 that grips and holds the starting end of the wire 1 in an opening 9 formed on the outer circumference of a wire winding drum 8 for winding the wire 1. and an arm 17 for allowing the chuck device 10 to move in and out of the winding drum 8.
, a clamping device 11 which is disposed on the rear side of the chuck device 10 in the rotational direction of the winding drum 8 and clamps the wire rod 1; and a tension state A of the wire rod 1 when the wire rod 1 is wound around the winding drum 8. and said arm 17
restricting inward rotation around the arm axis 26,
Further, a moving device 12 is provided for moving the chuck device 10 in the direction of the clamp device 11 so that the wire rod 1 is in a relaxed state B when the wire rod 1 is released from the chuck device 10.

Further, a wire holding device 13 is provided on the outer periphery of the winding drum 8 to prevent the wire 1 from coming off the winding drum 8 when the wire 1 is released from the chuck device 10.

As shown in FIG. 10, the winding drum 8 has a cylindrical shape, around which the wire rod 1 is wound, and is rotatably pivoted to the wire winding device main body 7a via a drum shaft 14. A cylinder 15 for raising and lowering the wire winding device 7 is attached above the shaft 14. The opening 9 is formed by cutting out a part of the outer periphery at the lower part of the winding drum 8.

As shown in FIGS. 3 to 5, the chuck device 10 has a central recessed portion with tapered upper and lower side walls 18.
A chuck device main body 19, a pair of upper and lower chuck claws 20 slidably attached along the tapered portion 18, and a presser plate for pressing the chuck claws 20 against the chuck device main body 19 to prevent the claws from coming off. 2
1, and a rod 2 for sliding the chuck claw 20.
2, and a pair of upper and lower protruding lock receivers 23 formed on the back of the chuck device main body 19.

As shown in FIG. 5, the chuck claw 20 slides along teeth 20a formed on the inner surface so as to grip the wire 1 in the vertical direction, and along grooves 21a formed on the outer surface of the holding plate 21. It has a protrusion 20b formed to be movable. The chuck pawl 20 has an engaged groove 20c on the side surface of the chuck device main body that engages with the engaging pawl 22a of the rod 22.
is formed.

The presser plate 21 is fixed to the chuck main unit 19 with bolts by fitting the protrusion 20b of the chuck pawl 20 into the groove 21a.

The rod 22 has a chuck claw 20 at its tip.
L-shaped engaging claw 22 that engages with the engaged groove 20c of
a is formed, and the other end is fixed to a chuck cylinder 25 which is telescopically moved via a rod shaft 24.

The base of the arm 17 is rotatably supported by an arm shaft 26 attached to the winding drum 8, and the chuck device 10 is rotatably mounted on the tip of the arm 17 via a chuck shaft 27.

Further, as the winding drum 8 rotates, the arm 17 is recessed into the opening 9 of the winding drum 8. An extruder 28 is arranged near the arm shaft 26. This extruder 2
8 has a spring 28a installed inside, and a push part 28b.
comes into contact with a protrusion 17a formed on the arm 17, and urges the arm 17 in a direction to push it out of the opening 9.

The clamp device 11, as shown in FIG.
It consists of a fixed arm 30 fixed to the drum 8, a movable arm 29 disposed opposite to the fixed arm 30, and a clamp cylinder 32 that allows the movable arm 29 to be opened and closed about a clamp shaft 31. and,
The clamp device 11 is such that when the chuck device 10 is built into the opening 9, the chuck pawl 20 of the chuck device 10 and the gripping portion of the wire 1 of the clamp device 11 are on the same straight line, and the movable arm 29 are arranged on the winding drum 8 so as to face the outer surface of the opening 9 and sandwich the wire rod 1 in the vertical direction.

Clamp claws 33 are attached to opposing surfaces of the movable arm 29 and fixed arm 30, respectively, with bolts.

The moving device 12 moves through the opening 9 of the winding drum 8.
A lock lever 35 is disposed at the center of the drum 8 and has a central boss portion swingably supported by the drum 8 via a lock shaft 36, and a lock lever 35 is used to move the wire 1 into a tensioned state A and a relaxed state B.
and a lock lever cylinder 37 for moving the chuck device 10 to change the position between the two positions.

The lock lever 35 is connected to the chuck device 1.
An end push-in part 38 is cut out in a semicircular shape so as to engage with the pin 23a passed through the lock receiving part 23 of 0.
and a triangular lock portion 39 located below the push-in portion 38 and in contact with the arm 17 to prevent the arm 17 from rotating into the winding drum 8.
and a support portion 41 supported by the cylinder 37 via a lock support shaft 40.

The wire holding device 13 is as shown in FIGS. 8 and 9.
A first presser roller 42, a second presser roller 43, and a third presser roller 44 are arranged on the outer periphery of the winding drum 8 in this order from the top. The first presser roller 42
is a roller that presses the final end of wire rod 1 at the top,
First roller shaft 4 by first roller cylinder 45
It is supported by the wire winding device main body 7a via the wire winding device 2a so as to be able to move into and out of the outer peripheral portion of the winding drum 8. In addition,
The cylinder 45 is also rotatably supported by a first cylinder shaft 45a. The second and third press rollers 43 and 44 are rollers that press the intermediate portion of the wire 1, and similarly to the first press roller 42, the second and third press rollers 43 and 44 are connected to the second and third roller cylinders 46 via the second and third roller shafts 43a and 44a. , 47, and the cylinders 46, 47 are also supported by the wire winding device main body 7a so as to be rotatable about second and third cylinder shafts 46a, 47a.

In the above configuration, in order to draw the wire 1, the wire 1 fed out from the wire feeding device 2 is
The guide device 5 passes through the bridge straightening device 3 and the die device 4.
The wire is guided to the winding drum 8 of the wire winding device 7. At this time, the winding drum 8 is positioned at the top by the cylinder 15, and the die device 4 and the chuck device 10
are on the same straight line. The chuck device 10 is located outside the winding drum 8, and the chuck pawl 20 is in an open state. Further, the clamping device 11 is also in an open state, and each roller of the wire holding device 13 is kept separated from the winding drum 8.

Then, as shown in FIG.
Set to 0. That is, the wire rod 1 is held between chuck claws 20, the chuck cylinder 25 is extended,
It is gripped by tightening the chuck claw 20 along the taper. Thereafter, when the winding drum 8 is rotated at an inching speed in the direction of the arrow shown in FIG.
It is pulled into the opening 9 of the winding drum 8. Then, the arm 17 comes into contact with the lock portion 39 of the moving device 12, the rotation of the arm 17 is prevented, and the wire rod 1 is stopped in the tensioned state A. In this state, the chuck pawl 20 of the chuck device 10 and the clamp pawl 33 of the clamp device 11 are located on the same straight line, so that the wire 1 is automatically set on the teeth of the clamp pawl 33. Therefore, the clamp cylinder 32 is extended by pressing the button, and the movable arm 29
Then, the fixed arm 30 is operated to close, and the tip of the wire 1 is fixed so that it does not move.

Thereafter, the winding drum 8 is lowered by the cylinder 15 in accordance with the number of windings while being rotated until the number of windings reaches the predetermined number of windings. When the winding drum 8 descends to the bottom, the roller cylinders 45, 46, 47 of the wire pressing device 13 are extended, and each pressing roller 4 is extended.
2, 43, and 44 are brought into contact with the wire rod 1 to prevent the wire rod 1 from coming off from the winding drum 8.

Next, the case of releasing the wire rod 1 from the chuck device 10 will be explained. When the wire rod 1 reaches the predetermined number of turns, the lock lever cylinder 37 of the moving device 12 is shortened and the lock lever 35 is rotated, and the lock portion 39 rotates following the rotation of the lock lever 35. At that time, the pushing part 38 of the moving device 12 engages with the pin 23a of the lock receiving part 23 of the chuck device 10, and the chuck device 10 is pushed up by about 20 mm.
in the direction of the clamping device 11. Then, the wire rod 1 becomes a relaxed state B, and the arm 17
is built into the drum 8.

This is because one end of the wire 1 is fixed by the clamp device 11 to eliminate the tensile force, and when the chuck device 10 is moved, a force is applied in the direction of loosening the chuck claw 20 due to the taper. When the chuck cylinder 25 is shortened to release the wire rod 1 from the chuck claw 20 and the chuck claw 20 is opened, the biting of the teeth 20a into the wire rod 1 can be easily released, and the chuck device 10 can be released from the chuck cylinder 25. The wire rod 1 can be easily released.

Thereafter, when the movable arm 29 of the clamp device 11 is released from the fixed arm 30, the winding wire 1 is released from the winding force and moves away from the winding drum 8 in the outer circumferential direction. By performing this operation automatically, the wire rod 1
is released from the winding drum 8 and falls onto the pedestal 6 without stopping the device.

At this time, the moving device 12 releases the chuck device 10 from the relaxed state, but the arm 17
The push-in portion 38 is engaged with at least the pin 23a of the chuck device 10 in order to prevent it from protruding from the drum 8 while being supplied to the cradle.

Further, in the next step, when the winding drum 8 is raised and the moving device 12 is released, the arm 17 is urged and pushed out to the outside of the winding drum 8 by the extruder 28, and the arm 17 is again used for gripping the wire rod 1. You can enter.

Therefore, by using the clamping device 11 together with the chuck device 10 to grip and hold the wire 1, and by moving the chuck device 10 using the moving device 12, the tension in the wire 1 is canceled out and the wire 1 is released. You can prevent future failures. However, unexpected situations such as the chuck device 10 popping out can also be prevented.

Also, a chuck device 10 and a clamp device 1
1 is open toward the outside of the drum 8, so that it is possible to prevent the wire from being caught when releasing the wire.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

<Effects of the Invention> As is clear from the above description, according to the present invention, there is provided a clamping device for clamping the wire, which is disposed rearward in the rotational direction of the winding drum than a chuck device for gripping the starting end of the wire, and a clamping device for clamping the wire. A moving device is provided for moving the chuck device in the direction of the clamp device so that the wire becomes relaxed when the wire is released from the chuck device, so the wire is fixed using the clamp device together with the chuck device. By moving the chuck device using the moving device, the wire tension at the time of opening the chuck is canceled out, and the wire rod can be released easily and reliably, which is an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a plan view of a wire winding device showing an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a side view of a chuck device, FIG. 4 is a front view thereof, and FIG. The figure is an exploded perspective view, FIG. 6 is a side view of the clamping device, FIG. 7 is a front view of the moving device, and FIG. 8 is a plan view of the wire holding device.
Fig. 9 is a plan view of a wire drawing machine using the wire winding device of the present invention, Fig. 10 is a front view thereof, Fig. 11 is a process block diagram when releasing the wire rod, and Fig. 12 is a conventional wire rod winding device. FIG. 13 is a sectional view of the chuck device. 1: wire rod, 7: wire winding device, 8: winding drum, 9: opening, 10: chuck device, 11: clamp device, 12: moving device, 13: wire holding device, 17: arm, 29: movable Arm, 30: Fixed arm, 35: Lock lever, 38: Pushing part,
39: Lock part, 41: Support part, A: Tension state,
B: Relaxed state.

Claims (1)

[Scope of Claims] 1. A chuck device for gripping the starting end of the wire rod, and an arm for allowing the chuck device to move in and out of the winding drum, are provided in an opening formed on the outer periphery of the wire winding drum. In the wire winding device rotatably supported on the winding drum via an arm shaft, the arm is disposed in the opening at a rear side in the rotational direction of the winding drum with respect to the chuck device. a clamping device that clamps the wire, and a movement that moves the chuck device that grips the wire in the direction of the clamping device in the wire clamping posture of the clamping device so that the wire is in a relaxed state when the wire is released from the chuck device. A lock lever is swingably supported on the winding drum via a lock shaft, and the moving device swings the lock lever so as to change the wire between a tensioned state and a relaxed state. a lock lever cylinder for releasing the wire from the chuck device; a pushing portion that engages with the lock receiving portion of the chuck device when the wire is released from the chuck device; A wire winding device comprising: a lock portion that contacts the arm in a tensioned state and restricts inward rotation of the arm around the arm axis.