JP3280222B2 - Wire tension control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire tension control device for applying a certain tension to a wire wound by a winding machine or the like.

[0002]

2. Description of the Related Art Conventionally, a tension control apparatus for a wire rod which applies a constant braking torque to a wire rod from a supply source and winds a coil or the like at a coil winding portion of a winding machine or the like is disclosed in Japanese Unexamined Patent Publication No. Hei. 3102
No. 65 (B65H59 / 36). That is, this kind of tension control device for a filament material includes a main tension pulley to which the filament material is attached and a magnetic disk that rotates integrally.

[0003] The braking torque of the main tension pulley is provided by a magnetic disk that rotates integrally with the main tension pulley.
A predetermined narrow gap (about 0.2 m
m) and a permanent magnet is attached. Then, a predetermined braking force is applied to the main tension pulley by applying a predetermined magnetic force (line of magnetic force) to the magnetic disk from the permanent magnet.

The braking torque is adjusted by rotating a screw attached to the permanent magnet to adjust the distance from the surface of the magnetic disk, thereby changing the braking torque applied to the main tension pulley. Further, the tension control device for the filament material is provided with a tension bar for guiding the filament material from the main tension pulley to the coil winding part of the winding machine. With this, an appropriate tension is given to a predetermined wire material hung in a groove around the main tension pulley, and a constant tension (steady state) is applied to the wire material wound on the wire winding bobbin of the coil winding portion. (Torque), and the wire is stretched in an optimum state while preventing elongation and loosening of the wire.

Further, when a predetermined tension is applied to the wire and wound on the bobbin, if the tension of the wire increases for some reason, the tension bar swings and the permanent magnet and the magnetic disk are moved. Adjusting the distance. As a result, the braking torque of the main tension pulley is reduced, and the increased tension is reduced to prevent the filament material from stretching or loosening.

[0006] Further, when replacing with a wire having a different wire diameter, the tension applied to the wire has to be greatly changed. In this case, the tension control device for the filament material has a small tension width to be applied to the filament material, and two or a plurality of tension control devices for the filament material which impart different tensions are prepared and wound. A wire tension control device suitable for the material was used.

[0007]

However, when adjusting the tension applied to the filament, the braking torque applied to the main tension pulley is adjusted by adjusting the distance between the permanent magnet and the surface of the magnetic disk. However, since the distance between the permanent magnet and the surface of the magnetic disk is too short, when the screw provided on the permanent magnet is rotated, the magnetic disk is also rotated by the magnetic force of the permanent magnet. As a result, the rotation of the magnetic disk is transmitted to the main tension pulley and rotates, and the wire material hung in the groove around the main tension pulley is loosened and comes off. For this reason, there has been a problem that a brake, a one-way clutch, and the like for preventing the filament material from being loose have to be attached.

Further, the adjustment of the braking torque transmitted to the main tension pulley involves an extreme change in the magnetic force and an extreme change in the braking torque of the main tension pulley even if the distance between the magnetic disk and the permanent magnet is slightly changed. As a result, it was extremely difficult to adjust the tension applied to the filament material. For this reason, there has been a problem that in order to finely adjust the tension applied to the filament material, the braking torque of the main tension pulley must be adjusted by controlling a stepping motor or the like.

Further, when winding the wire material on the bobbin of the coil winding portion of the winding machine, a sensor or a control device is used, whereby the wire material is wound on the bobbin of the coil winding portion of the winding machine. Is winding up. When a sensor or a control device is used for winding the filament material, there is a problem that the cost of the tension control device for the filament material increases.

In order to prevent the wire from stretching or loosening by reducing the tension increased for some reason to a constant value, a predetermined cam is moved by a rocking tension bar to move the surface of the magnetic disk. The braking torque of the main tension pulley is weakened by separating the permanent magnet from the motor. In this case, an extremely large operation force is required to keep the distance between the permanent magnet and the magnetic disk, and this method has a problem that the wire cannot be completely prevented from being stretched or loosened.

Also, when the wire material is automatically wound on the bobbin of the winding machine, when the wire material is wound on the bobbin, and then the wire material is entangled with another bobbin terminal, the winding time is reduced. It is necessary to lower the tension value of the filament. In such a conventional configuration, when the wire material is entangled with another bobbin terminal, the back tension applied to the wire material is reduced, but there is a problem that it is difficult to reduce the braking torque of the main tension pulley.

[0012] The present invention provides a wire tension control device that applies a stable tension to the wire, is inexpensive, and can easily adjust the tension.

[0013]

That is, according to the first aspect of the present invention, there is provided a tension control device for a filament material, wherein a filament material P from a supply source is supplied to the tension control device.
A main tension pulley 3 to which a braking torque is applied;
Tension bar 26 urged toward the tension applying side
A constant tension is applied to the coil winding portion through a sub-tension pulley 27 provided at the swinging end of the magnetic disk 7, and the magnetic disk 7 rotates integrally with the main tension pulley 3, and at least A braking torque generating means for applying a braking torque to the main tension pulley 3; and a permanent magnet 12 provided in one surface of the magnetic disk 7 with a predetermined interval therebetween, and moving the permanent magnet 12 in a radial direction of the magnetic disk 12. And a steady-state torque setting means for setting a steady-state braking torque.

Further, according to a second aspect of the present invention, there is provided a filament material tension controller 1 for urging a filament material P from a supply source to a main tension pulley 3 to which a braking torque is applied and a tension applying side. A constant tension is applied to the coil winding portion through a sub-tension pulley 27 provided at the swinging end of the tension bar 26, and the magnetic force rotates integrally with the main tension pulley 3. A braking torque generating means for applying a braking torque to the main tension pulley 3, comprising a disk 7 and permanent magnets 12 provided at predetermined intervals on both surfaces of the magnetic disk 7; And a steady-state torque setting means for setting a steady-state braking torque by moving in the radial direction.

Further, in the wire tension control apparatus 1 according to the third aspect of the present invention, a plurality of permanent magnets 12 are annularly arranged at a predetermined interval on one surface side of the magnetic disk 7 in the second aspect. Are provided, and a plurality of permanent magnets 12 are provided annularly at a predetermined interval on the other surface side, and each permanent magnet 12 provided on one surface side of the magnetic disk 7 is provided on the other surface side. Are provided between the permanent magnets 12.

Further, in the wire tension controlling apparatus 1 according to the invention of claim 4, the plurality of permanent magnets 12 provided at a predetermined interval on one surface side of the magnetic disk 7 according to claim 2 or 3. , And a plurality of permanent magnets 12 provided at predetermined intervals on the other surface are attached with polarities that attract each other.

Further, in the wire tension control apparatus 1 according to the present invention, the magnetic disk 7 may be provided with a predetermined distance on one side or both sides of the magnetic disk 7 according to the first, second, third or fourth aspect. Are arranged half-circularly in an annular shape.

Further, the tension control apparatus 1 for a linear material according to the invention of claim 6 is the one side or both sides of the magnetic disk 7 according to claim 1, 2, 3, 4 or 5. , A plurality of permanent magnets 12 provided at predetermined intervals
Is provided in the separating direction from the magnetic disk 7.

Further, in the wire tension control apparatus 1 according to the invention of claim 7, the steady torque setting means according to claim 1, 2, 3, 4, 5 or 6 is preferably used. A braking torque coarse adjustment unit and a braking torque fine adjustment unit are provided.

Further, in the wire tension control apparatus 1 according to the present invention, the wire rod P
The back tension adjusting means for adjusting the displacement of the tension bar 26 due to the tension fluctuation in the direction which hinders the fluctuation of the tension of the winding.

[0021]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a wire tension control device 1 of the present invention, and FIG. 2 is a wire tension control device 1 of the present invention.
3 is a sectional view taken along line AA of FIG. 2, FIG. 4 is a sectional view taken along line BB of FIG. 2, FIG. 5 is a vertical sectional side view of the wire presser 37, and FIG. Permanent magnet 1 on the side
2 and 2 respectively show arrangement relation diagrams of permanent magnets 12 provided on the other surface side. The wire rod tension control device 1 includes a braking torque generating means, a steady torque setting means, a back tension adjusting means, and a wire presser 37.

The main tension pulley 3 applies a predetermined tension to a wire P wound around a bobbin attached to a coil winding portion of a winding machine (not shown). It has a predetermined disk shape provided with a groove 3A having a depth. An O-ring 18 of a predetermined size is fitted in the groove 3A, and the O-ring 18 prevents the wire P and the main tension pulley 3 from slipping. The main tension pulley 3 is fixed to one of the freely rotatable brake shafts 6, and a disc-shaped magnetic disk 7 of a predetermined thickness that rotates together with the main tension pulley 3 is fixed to the other of the brake shaft 6. ing.

The magnetic disk 7 is formed of a hysteresis material (in this case, for example, a predetermined iron plate) that can be easily magnetized, and has a predetermined gap (for example, 0.2 mm to 0.3 mm) with a permanent magnet 12 described later. Is installed. The magnetic disk 7 rotates while being attracted by the permanent magnet 12, and generates a braking torque by a magnetic interaction between the two. The braking torque is applied to the main tension pulley 3 which rotates integrally with the magnetic disk 7. Has communicated. That is, the magnetic disk 7 rotates while being attracted by the permanent magnet 12, thereby generating a braking torque on the magnetic disk 7 and transmitting the braking torque to the main tension pulley 3.

The main tension pulley 3 fixed to the braking shaft 6 is rotatably supported by a bearing holder 9 via a plurality of ball bearings 8 and bearings 5. The bearing holder 9 is fixed to the plate 2A of the main body 2 of the tension control device 1 for the linear material, and the main tension pulley 3 is rotatable on the front side of the plate 2A of the main body 2 and the magnetic disk 7 is rotatable on the back side. Installed.

The braking torque generating means comprises a magnetic disk 7, a main moving arm 10, and a sub-moving arm 11, and is free to move on both side surfaces of the magnetic disk 7 at a predetermined interval. A main moving arm 10 and a sub moving arm 11 are provided. A plurality of permanent magnets 12 are attached to the main moving arm 10 and the sub moving arm 11, and the permanent magnets 12 have a predetermined thickness and a predetermined size. And these permanent magnets 12
.. Have a predetermined magnetic force, and a plurality of rings (four in the main moving arm 10 and three in the sub moving arm 11 in this case) are formed at predetermined intervals between the main moving arm 10 and the sub moving arm 11. They are arranged half a circumference.

Each of the permanent magnets 12... Mounted on the main moving arm 10 in a semi-circular manner and each of the permanent magnets 12. It is arranged on the circumference around 5). Are mounted at substantially the same positions as the outer circumference of the magnetic disk 7, and are arranged half-peripherally on the separation side when the main moving arm 10 and the sub-moving arm 11 move from the magnetic disk 7. Have been. Each permanent magnet 12 attached to the main moving arm 10
... and each permanent magnet 12 attached to the sub-movement arm 11
Are arranged on a straight line, for example, each permanent magnet 12 attached to the main moving arm 10 as shown in FIG.
Are arranged so that the permanent magnets 12 attached to the sub-movement arm 11 are located between them.

The permanent magnets 12 attached to the main moving arm 10 and the permanent magnets 12 attached to the sub moving arm 11 are attached with polarities that attract each other. Each permanent magnet 1 attached to 10
.. Are N poles, each permanent magnet 12... Attached to the sub-movement arm 11 is an S pole. In this case, each permanent magnet 12 attached to the main moving arm 10
The polarity of each permanent magnet 1 attached to the sub-movement arm 11
.. May be reversed.

That is, the permanent magnets 12 attached to the main moving arm 10 and the permanent magnets 12 attached to the sub moving arm 11 are attached so as to attract each other. Permanent magnet (S
.. And the permanent magnet (N-pole) 12... Attached to the sub-movement arm 11 pass through the magnetic disk 7 and are attracted by the S and N poles of the magnet. When the magnetic disk 7 rotates in conjunction with the main tension pulley 3,
A magnetic interaction occurs on the magnetic disk 7 and a magnetic braking torque is generated on the magnetic disk 7.

A bearing holder 14 is attached to one end of the main moving arm 10, and the bearing holder 14 is rotatably held on an arm rotating shaft 13 via a bearing 15. One end of the arm rotation shaft 13 is fixed to the plate 2A by a bolt 13A, whereby the main moving arm 10 is attached to be freely rotatable about the arm rotation shaft 13. 16 is the main moving arm 1
This is a bearing stopper for preventing the 0 from coming off.

The sub-movement arm 11 is fixed to the vicinity of the other end of the main movement arm 10 with fixing bolts 17, 17 via a spacer (not shown).
And the sub-movement arm 11 are attached in parallel at a predetermined interval via a spacer. A position indicating pin 20 is fixed near the other end of the main moving arm 10 with a nut 21, and the position indicating pin 20 is configured to be movable within a range of a scale 20A.

The position indicating pin 20 is provided so as to protrude slightly from a predetermined long hole 22 provided in the plate 2A. A predetermined scale 20A (in this case, 0 to 10) is provided beside the long hole 22. Number) is displayed. The scale 20
A represents each permanent magnet 12 in the radial direction of the magnetic disk 7.
··· Indicates the position of the (main moving arm 10, sub moving arm 11), and the scale 20A on which the position indicating pin 20 is located
Thus, the reference value of the tension value to be applied to the filament material P is indicated.

A rotatable support bearing 50 is attached to the other end of the main moving arm 10, and the supporting bearing 50 is attached to the permanent magnet 12 (main moving arm 1).
0, sub-movement arm 11) It is configured to keep the distance from the magnetic disk 7 constant. Such a support bearing 5
A rotation shaft (not shown) 0 is fixed to the other end of the main moving arm 10, and is fixed to an arm 51 with a bolt 52 and a nut 53.
The configuration is such that the outer periphery of the support bearing 50 is always in contact with the plate 2A in a state where 0 is held.

The main moving arm 10 includes a coil spring 2
4, the coil spring 24 constantly urges the main moving arm 10 toward the coarse adjustment arm 23 side. still,
24A and 24B are spring holding bolts for hanging the coil spring 24.

On the other hand, the steady torque setting means is for optimally setting the tension applied to the filament material P, and comprises a braking torque coarse adjustment section and a braking torque fine adjustment section. The braking torque fine-adjustment section includes a fine-adjustment bolt 19 having a predetermined length.
Has a predetermined screw groove 19A on the outer periphery and a through hole (not shown) provided inside the fine adjustment bolt 19.
The fine adjustment bolt 19 is attached to the plate 2 by the screw groove 19A.
A is screwed and attached to a nut 21 fixed below, and the fine adjustment bolt 19 is configured to slightly move up and down when rotated.

The braking torque coarse adjusting section comprises a coarse adjusting arm 23 having a predetermined length.
A predetermined diameter is inserted into a through hole provided in the fine adjustment bolt 19 so as to be movable inside the fine adjustment bolt 19. 23A is an adjustment knob, and 23B is a coarse adjustment arm 2.
3 is a fixing bolt for fixing the 3 to the fine adjustment bolt 19.

The coarse adjustment arm 23 is
Adjusting knob 2 with B fixed to fine adjusting bolt 19
When the 3A is rotated clockwise, the fine adjustment bolt 19 is rotated, and the main moving arm 10 and the sub moving arm 1 are rotated.
1 moves from the inner circumference to the outer circumference of the magnetic disk 7. Also, when the adjustment knob 23A is rotated counterclockwise,
The main moving arm 10 and the sub moving arm 11 are
Move from the outer circumference to the inner circumference.

At this time, the main moving arm 1 is
0 is urged to the fixing bolt 23B side, so that the main moving arm 10 and the sub moving arm 11 easily move to the fixing bolt 23B side. Thereby, the magnetic disk 7 and the permanent magnet 1
The position 2 can be very finely moved and the tension applied to the filament material P can be finely adjusted.

The coarse adjustment arm 23 in the fine adjustment bolt 19 can be freely moved by loosening the fixing bolt 23B. By moving the coarse adjustment arm 23, the main moving arm 10 and the sub moving arm 11 can be moved from the inner circumference to the outer circumference of the magnetic disk 7 and from the outer circumference to the inner circumference. Thereby, the positions of the magnetic disk 7 and the permanent magnet 12 can be largely moved, and the braking torque applied to the filament material P can be roughly adjusted.

By rotating the adjustment knob 23A, the main movement arm 10 and the sub movement arm 11 are moved (in this case, the coarse adjustment arm 23 may be moved), and the permanent magnets 12 are moved.
Move from the outer circumference of the radius of the magnetic disk 7 toward the center. When the center of the rotating magnetic disk 7 and the center of the permanent magnets 12. The maximum magnet area between the two is maximized, and the braking torque of the main tension pulley 3 is maximized.

Further, the adjustment knob 23A is rotated to move the main movement arm 10 and the sub movement arm 11 (in this case, the coarse adjustment arm 23 may be moved), and the permanent magnets 12 are moved.
Move from the center of the radius of the magnetic disk 7 toward the outer periphery. When the center of each of the permanent magnets 12... Mounted on the main moving arm 10 and the sub-moving arm 11 in a semicircular manner moves toward the outer circumference of the radius of the rotating magnetic disk 7, the area between the two gradually increases. To less. Thus, the braking torque of the main tension pulley 3 is configured to be weak, and the braking torque of the main tension pulley 3 is easily adjustable.

The main moving arm 10 and the sub moving arm 1
The outer peripheral edge of each of the permanent magnets 12... Provided at 1 is mounted at substantially the same position as the outer peripheral edge of the magnetic disk 7. When moving in the outer peripheral direction, the inner peripheral edges of the plurality of permanent magnets 12 are separated from the outer peripheral edge of the magnetic disk 7 at substantially the same time, and the braking torque applied to the main tension pulley 3 is simultaneously released. are doing.

An air-operated cylinder 54 is fixed to the side of the fine adjustment bolt 19 with a bolt (not shown). The tip of an arm 54A connected to a piston (not shown) of the cylinder 54 is connected to the main moving arm. It is in contact with 10 side surfaces. An electromagnetic valve (not shown) is attached to the other side of the cylinder 54, and the electromagnetic valve is provided in conjunction with a disconnection detection switch 57 described later.
Incidentally, 51 is an air pipe, which is connected to a compressor not shown.

A disconnection detection switch 57 is fixed above the plate 2A with a screw (not shown). The disconnection detection switch 57 is configured to stop the winding machine when the wire P is disconnected. I have. The disconnection detection switch 57 is configured so that the disconnection detection switch 57 is turned on and off by a switch operation lever 56 described later.

When the disconnection detection switch 57 is turned on, the solenoid valve of the cylinder 54 operates to blow air from the compressor into the cylinder 54 via the air pipe 51.
Accordingly, the piston of the cylinder 54 is pushed out, and the arm 54A is pushed out to push the main moving arm 10. The main moving arm 10 and the sub moving arm 11 move in the outer peripheral direction of the magnetic disk 7 by the piston arm 54A. Thus, the plurality of permanent magnets 12 are detached (dotted lines in FIG. 2), and the braking torque applied to the main tension pulley 3 is simultaneously released.

On the other hand, the back tension adjusting means applies a back tension to the wire material P to prevent the wire material P wound by the winding machine from stretching or loosening. It comprises a tension bar 26, a sub-tension pulley 27, and a tension shaft 30. At the other end of the tension bar 26, a sub-tension pulley 27 provided with a predetermined groove on the outer circumference is rotatably mounted. The sub-tension pulley 27 is mounted on a pulley mounting shaft 25A, and the other end of the tension bar 26 is provided. Is attached to a pulley attachment 25 fixed to the pulley.

An attachment 29 is attached to one end of the tension bar 26, and the attachment 29 is attached to one of the tension shafts 30. The tension shaft 30 is rotatably mounted at right angles to the surface of the plate 2A by a bearing 31 mounted on the upper right side of the plate 2A and a bearing 31 mounted on the other side of the tension frame 30A described later.

An adjusting shaft 33 is mounted on a mounting member 32 fixed to the tension shaft 30. A tension adjusting member 34 is freely movable from one end of the adjusting shaft 33 to the other end and from one end to another end of a predetermined screw 35. Installed with. The tension bar 26 and the adjustment shaft 33 are rotatably and integrally mounted on the tension shaft 30 as a fulcrum, and a coil spring 36 of a predetermined load is hung on the adjustment tool 34.

The pin 3 is located at a predetermined position on the plate 2A.
6A is fixed, and the coil spring 3
The other of 6 is hung. The adjustment tool 34 attached to the adjustment shaft 33 is configured to change the tension of the coil spring 36 by moving from one end of the adjustment shaft 33 to the other end or from the other end to one end.

The adjusting member 34 is moved to a predetermined position where the displacement of the tension bar 26 is optimal, for example, to adjust the linear material P having a predetermined wire diameter so that the tension bar 26 is substantially horizontal. The tool 34 is fixed with screws 35. In such a case, when the filament material P wound by the winding machine is loosened, the tension bar 26 moves above the horizontal (separated from the coil winding portion of the winding machine), that is, the tension bar 26 moves back from the coil winding portion to loosen. The tension bar 26 is moved below the horizontal when the filament material P is about to extend.

Thus, even if the tension applied to the wire P hung on the groove 3A of the sub-tension pulley 27 fluctuates, the fluctuated tension is absorbed by the vertical movement of the sub-tension pulley 27 and the wire P is moved. It is configured so as to be wound around the bobbin of the winding machine with a constant tension, thereby preventing a winding problem. Reference numeral 56 denotes a switch operation lever, which is attached to the attachment 29 at a predetermined angle. Reference numeral 32A denotes a stopper for preventing the adjustment shaft 33 from lowering below a predetermined position, 30A denotes a tension frame, one of which is fixed to the plate 2A via a spacer (not shown), and 30B denotes a fixing screw.

On the other hand, the wire holding device 37 is for preventing the wire material P guided from the bobbin (not shown) around which the wire material P is wound to the main tension pulley 3 from loosening or coming off, as shown in FIG. As shown, two wire holders 38 made of felt or the like,
The wire material P is sandwiched between the wires 38 so that a predetermined weak tension is applied to the wire material P guided from the bobbin to the main tension pulley 3. Such two wire pressers 38,
A wire press shaft 39 is inserted through the center of 38, and a stopper 39 </ b> A is fixed to one of the wire press shafts 39.

The wire holder 40 is fixed below the plate 2 A of the main body 2, and the wire holder shaft 39 is inserted through the wire holder 40 via a coil spring 42. The wire presser shaft 39 has wire pressers 38, 38 and washers 4.
1 are inserted in order, and these E-rings 41 are
A is fixed. The two wire presses 38 are always held by the coil spring 42, and the wire press 3
A predetermined weak tension is applied to the wire material P sandwiched between the wires 8 and 38 so as to prevent the wire material P from being loosened or detached.

Reference numeral 46 denotes a mounting screw, and reference numeral 45 denotes a fixed arm, which is used to mount the wire tension control device 1 to a winding machine (not shown). Further, 44 is a guide pulley, 48 is a snell guide for preventing the wire material P hung on the groove 3A of the main tension pulley 3 from coming off, 49.
Is a mounting shaft on the winding machine side.

Next, with the above configuration, the tension control device 1
An example of use will be described. The fixing arm 45 of the tension control device 1 is fixed to a mounting shaft 49 of a winding machine (not shown) by a mounting screw 46. , A wire pulling device 37, a guide pulley 44, a main tension pulley 3 (in this case, the wire P may be wound around the main tension pulley 3 several times), a snell guide 48, and a sub tension pulley 27. Is guided to the winding bobbin of the winding machine.

The tension adjuster 34 is mounted at a position where the tension bar 26 is substantially horizontal in accordance with the wire P to be wound, and the tension applied to the wire P fluctuates. When the strip P is loosened, the coil spring 36 expands and contracts, and the tension bar 26 rotates up and down, and the wire P
To absorb tension fluctuations such as slack in Further, when the tension of the wire P is equal to or more than a predetermined value and the wire P is disconnected, the tension bar 26 and the tension shaft 30 rotate and the switch operation lever 56 is operated to activate the disconnection detection switch 57. Cut off the winding machine.

First, the fixing bolt 23B is loosened and the coarse adjustment arm 23 is moved, the position indicating pin 20 is set in advance to a predetermined scale 20A, coarse adjustment of the tension applied to the wire P is performed, and the fixing bolt 23B is removed. The coarse adjustment arm 23 is fixed by tightening. Next, the tension applied to the wire P is measured by using a predetermined measure of the wire P guided to the winding machine. At this time, if the tension applied to the filament material P is different from the appropriate value, the adjustment knob 23A
Is rotated clockwise or counterclockwise to obtain the filament material P.
The tension applied to is measured again. By repeating this several times, the tension applied to the filament material P is adjusted to a predetermined optimal tension.

Next, when the winding of the winding machine is started, the wire rod P is transferred from the wire holding device 37 to the winding bobbin of the winding machine via the guide pulley 44 and around the main tension pulley 3. Is wound up. At this time, when the filament material P moves around the main tension pulley 3, the main tension pulley 3 rotates. In this case, an O-ring 18 is fitted in the groove 3A of the main tension pulley 3, and rotates the main tension pulley 3 without slipping when the filament material P moves around the main tension pulley 3.

When the main tension pulley 3 rotates, the magnetic disk 7 which rotates integrally via the main tension pulley 3 rotates, whereby a predetermined tension (braking torque of the main tension pulley 3) is applied to the wire material P. Is done.
Then, the filament material P is guided from the main tension pulley 3 to the snell guide 48, and is wound around the bobbin of the winding machine via the sub tension pulley 27 attached to the tension bar 26.

In this case, when a predetermined tension is applied to the filament material P by the main tension pulley 3 and then wound around the winding machine via the sub tension pulley 27, the sub tension pulley 27 is pulled and the tension bar is pulled. 26 moves downward. Then, in a state where the tension bar 26 is balanced, the tension bar 26 stops at a substantially horizontal position, and the filament material P is wound around the bobbin of the winding machine.

The tension applied to the wire P is adjusted by the spring force of the coil spring 36 which urges the tension bar 26 upward through the adjustment shaft 33, the rotating magnetic disk 7 and the main moving arm 10. The magnetic flux applied to the magnetic disk 7 has a value corresponding to the braking torque of the main tension pulley 3 according to the positions of the permanent magnets 12... Thereby, the wire material P wound on the bobbin of the winding machine can be wound with a substantially constant tension.

On the other hand, when the tension is applied to the wire P, if the wire P has a large diameter and needs a strong tension, the coarse adjustment arm 23 is moved to move the position indicating pin 20.
Is set in advance to a predetermined scale 20A. Next, the adjustment knob 23A is rotated to move the main moving arm 10 to a predetermined position (the permanent magnet 12 is moved in the radius direction of the magnetic disk 7). Thereby, the adjustment of the braking torque applied to the main tension pulley 3 can be extremely easily performed, and a predetermined high tension can be stably applied to the wire material P having a large wire diameter.

When the wire P has a small diameter and requires a weak tension, the coarse adjustment arm 23 is moved to adjust the position indicating pin 20 to a predetermined scale 20A in advance.
Next, the adjustment knob 23A is rotated to move the main moving arm 10 to a predetermined position (in this case, the permanent magnet 12 is moved in the radial direction of the magnetic disk 7). Thereby, the adjustment of the braking torque applied to the main tension pulley 3 can be extremely easily performed, and a predetermined weak tension can be stably applied to the wire material P having a small wire diameter.

As described above, the adjustment of the braking torque applied to the main tension pulley 3 can be largely adjusted by the coarse adjustment arm 23 and can be finely adjusted by the adjustment knob 23A. Thereby, the adjustment of the tension applied to the filament material P can be performed very easily.

A plurality of permanent magnets 12 attached to the main moving arm 10 and the sub moving arm 11 are moved from the inner circumference to the outer circumference and from the outer circumference to the inner circumference in the radius of the magnetic disk 7. Therefore, the braking torque applied to the main tension pulley 3 is slightly changed, so that the tension applied to the filament material P can be finely adjusted. This eliminates the need for a stepping motor for adjusting the tension of the wire P as in the related art. Therefore, the tension applied to the wire P can be adjusted very easily, and the cost of the wire tension control device 1 can be significantly reduced.

The coarse adjustment arm 23 and the adjustment knob 23
With A, the braking torque applied to the main tension pulley 3 can be largely adjusted and fine adjustment can be performed. Even in the case where the tension applied to the wire P needs to be significantly changed, even if two or more tension control devices for applying a different tension to the wire as in the related art are not used, one device can be used. I'm done. Thereby, the cost of the tension control device 1 for a wire can be significantly reduced.

Further, a load is applied during winding for some reason, the tension of the wire P is increased, and the wire P is disconnected. When the wire P is disconnected, the adjusting shaft 33 is pulled toward the switch operating lever 56 by the coil spring 36, and the disconnection detecting switch 57 is pushed by the switch operating lever 56 to operate. Thereby, the arm 54 of the cylinder 54
A pushes the side of the main moving arm 10 at the tip of
Are stopped from the outer periphery of the magnetic disk 7 to stop the winding machine.

In such a case, the tension applied to the wire P is released by separating the main moving arm 10 from the radial outer periphery of the magnetic disk 7 at the tip of the arm 54A of the cylinder 54, so that the bobbin (not shown) can be easily used. Wire holding device 37,
The guide can be guided to the bobbin of the winding machine via the guide pulley 44, the main tension pulley 3, the snell guide 48, and the sub tension pulley 27.

Further, since the permanent magnet 12 is moved in the radial direction of the magnetic disk 7, the main tension pulley 3 is not rotated, and the slack of the linear material due to the rotation of the main tension pulley 3 is prevented as in the related art. There is no need to install brakes or one-way clutches. Therefore, almost no tension is applied to the filament material, and the main tension pulley 3
The wire P can be easily wound around another bobbin without coming off the groove around the wire.

That is, the main moving arm 1
0 to move the permanent magnet 12 away from the outer periphery of the magnetic disk 7 in the radial direction. This makes each permanent magnet 12 ...
Since the magnetic interaction occurring between the rotating magnetic disk 7 and the rotating magnetic disk 7 is prevented, the braking torque of the main tension pulley 3 can be released very easily with respect to the tension fluctuation of the winding.

As described above, when the wire P is broken due to an abnormally high tension applied to the wire P during winding, the winding machine can be stopped very easily and the main tension pulley 3
Can also be released. This eliminates the need for a sensor or a control device that has been conventionally used, so that the structure of the tension control device 1 for the filament material is extremely simplified, mass productivity can be improved, and costs can be reduced.

In the embodiment, a plurality of permanent magnets 12... Are provided on the main moving arm 10 and the sub-moving arm 11 in a semicircular manner. However, the present invention is not limited to this. ··················································································································

The main moving arm 10 and the sub moving arm 1
One of the first arm 1 and the second arm 11 is freely rotatable, but the invention is not limited thereto. The main arm 10 and the sub arm 11 may be attached so as to move in parallel.

The main moving arm 10 and the sub moving arm 1
Although four permanent magnets 12 are attached to one, four or less permanent magnets 12 or four or more permanent magnets 12 may be attached.

Further, the main moving arm 10 and the sub-moving arm 11 having a plurality of permanent magnets 12... Mounted on both sides of the magnetic disk 7 at predetermined intervals are freely movable. The movable arm provided with the permanent magnets 12... At a predetermined interval on one surface of the magnetic disk 7 can be freely mounted to perform the same operation as the main movable arm 10.

[0075]

As described in detail above, according to the first aspect of the present invention, there is provided a magnetic disk which rotates integrally with the main tension pulley, and a permanent magnet provided at least on one surface of the magnetic disk at a predetermined interval. A braking torque generating means for applying a braking torque to the main tension pulley; and a steady torque setting means for setting a steady-state braking torque by moving a permanent magnet in a radial direction of the magnetic disk. The braking torque applied to the tension pulley can be easily adjusted. Therefore, the adjustment of the tension applied to the filament material can be extremely easily performed, and a sensor and a control device are unnecessary as in the related art. Thereby, the cost of the tension control device for the wire material can be significantly reduced.

According to the second aspect of the present invention, the main tension pulley comprises a magnetic disk 7 which rotates integrally with the main tension pulley, and permanent magnets provided at predetermined intervals on both surfaces of the magnetic disk. A braking torque generating means for applying a braking torque to the magnetic disk, and a stationary torque setting means for setting a stationary braking torque by moving the permanent magnet in the radial direction of the magnetic disk. Can be passed through. As a result, the braking torque of the magnetic disk is increased, and the adjustment of the tension applied to the filament can be extremely easily performed. Therefore, unlike the related art, a sensor and a control device are not required, and the cost of the tension control device for the wire can be significantly reduced.

In particular, since permanent magnets are provided at predetermined intervals on both sides of the magnetic disk, the width of the tension adjustment of the filament can be increased, and a large number of filaments can be controlled by a single filament tension control device. It is possible to adjust different tensions of the strips and to optimally adjust the tension applied to the wire.

According to a third aspect of the present invention, in the second aspect, a plurality of permanent magnets are annularly provided on one side of the magnetic disk at a predetermined interval, and at a predetermined interval on the other side. A plurality of permanent magnets are provided in an annular shape, and each permanent magnet provided on one surface side of the magnetic disk is provided between each permanent magnet provided on the other surface side. Magnetic interaction can be easily generated. Therefore, it is possible to easily apply a predetermined tension to the main tension pulley that rotates integrally with the magnetic disk.

According to a fourth aspect of the present invention, in the second or third aspect, a plurality of permanent magnets provided at a predetermined distance on one surface of the magnetic disk and a predetermined distance on the other surface are provided. Since the plurality of permanent magnets provided with the above are attached with polarities that attract each other, the magnetic disk can easily generate magnetic interaction with the permanent magnets. Therefore, it is possible to easily apply a predetermined tension to the main tension pulley that rotates integrally with the magnetic disk.

Further, according to the invention of claim 5, claim 1,
According to claim 2, claim 3, or claim 4, the plurality of permanent magnets provided at a predetermined interval on one side or both sides of the magnetic disk are arranged in a semicircle around the ring, so that the wire material is disconnected. In this case, the permanent magnets can be easily separated from the magnetic disk to release the braking torque of the main tension pulley. Therefore, the wire can be easily guided from the bobbin to the bobbin of the winding machine.

Further, according to the sixth aspect of the present invention,
In claim 2, claim 3, claim 4, or claim 5,
A plurality of permanent magnets provided at a predetermined interval on one side or both sides of the magnetic disk are provided in the direction of separation from the magnetic disk 7, so that even if the wire material is broken, each permanent magnet can be easily magnetized. The brake torque of the main tension pulley can be released by separating from the disk.

Further, according to the invention of claim 7, claim 1,
Claim 2, Claim 3, Claim 4, Claim 5, or Claim 6
In the above, since the steady torque setting means is provided with the braking torque coarse adjustment section and the braking torque fine adjustment section, the tension applied to the filament can be extremely greatly adjusted, and the tension applied to the filament can be finely adjusted. It can be performed.
Therefore, different tensions of a large number of filaments can be adjusted by one filament tension control device, and the applied tension applied to the filaments can be adjusted optimally.

Further, according to the eighth aspect of the present invention, in the first or second aspect, the back tension adjustment for adjusting the displacement of the tension bar due to the variation of the tension of the wire material in a direction that hinders the variation of the tension of the winding. Since the means is provided, even if the tension of the wire wound around the bobbin fluctuates, the extension or loosening of the wire due to the vertical movement of the sub-tension pulley can be absorbed very easily.
Therefore, the fluctuation of the tension when the filament material is wound on the bobbin of the winding machine can be stabilized very easily.

[Brief description of the drawings]

FIG. 1 is a front view of a tension control device for a filament material according to the present invention.

FIG. 2 is a view showing the structure of a tension control device for a filament material according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a vertical sectional side view of the wire holding device.

FIG. 6 is a diagram showing a positional relationship between a permanent magnet provided on one surface of a magnetic disk and a permanent magnet provided on the other surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tension control device of filament material 2 Main body 2A plate 3 Main tension pulley 5 Bearing 6 Braking shaft 7 Magnetic disk 10 Main moving arm 11 Sub moving arm 12 Permanent magnet 20 Position indicating pin 22A Scale 23 Coarse adjusting arm 23A Adjusting knob 24 Coil spring 26 Tension bar 27 Secondary tension pulley 33 Adjusting shaft 36 Coil spring 37 Wire presser 44 Guide pulley 57 Disconnection detection switch P Wire material

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65H 59/10 B65H 59/36

Claims (8)

(57) [Claims] 1. A wire rod from a supply source is passed through a main tension pulley to which a braking torque is applied and a sub-tension pulley provided at a swing end of a tension bar biased to a tension applying side. A tension control device for applying a constant tension to the wire material and supplying the coil tension to the coil winding portion, wherein a magnetic disk that rotates integrally with the main tension pulley and a predetermined space are provided at least on one surface of the magnetic disk. Braking torque generating means for applying a braking torque to the main tension pulley, and a steady torque setting for setting the steady-state braking torque by moving the permanent magnet in a radial direction of the magnetic disk. Means for controlling the tension of the filament material. 2. A wire member from a supply source is passed through a main tension pulley to which a braking torque is applied and a sub-tension pulley provided at a swing end of a tension bar urged toward a tension applying side. A tension control device for applying a constant tension to a wire material to be supplied to the coil winding portion, wherein a magnetic disk that rotates integrally with the main tension pulley, and a predetermined distance between both surfaces of the magnetic disk. Braking torque generating means for applying a braking torque to the main tension pulley, and stationary torque setting means for setting the steady-state braking torque by moving the permanent magnet in a radial direction of the magnetic disk. And a tension control device for a wire material. 3. A magnetic disk, wherein a plurality of permanent magnets are provided annularly at a predetermined distance on one surface side of the magnetic disk, and a plurality of permanent magnets are provided annularly at a predetermined distance on the other surface side. 3. The tension control device according to claim 2, wherein each permanent magnet provided on one surface of the disk is provided between the permanent magnets provided on the other surface. 4. A plurality of permanent magnets provided at a predetermined interval on one side of a magnetic disk and a plurality of permanent magnets provided at a predetermined interval on the other side have polarities attracting each other. The tension control device for a filament material according to claim 2 or 3, wherein the tension control device is attached. 5. A plurality of permanent magnets provided at a predetermined interval on one side or both sides of a magnetic disk, and are arranged in a half circle around the ring.
Or the tension control device for a filament material according to claim 4. 6. The magnetic disk according to claim 1, wherein a plurality of permanent magnets provided at a predetermined interval on one side or both sides of the magnetic disk are provided in a detaching direction from the magnetic disk. The tension control device for a linear material according to claim 3, 4, or 5. 7. The steady torque setting means includes a braking torque coarse adjustment section and a braking torque fine adjustment section. The tension control device for a filament material according to claim 6. 8. The wire according to claim 1, further comprising back tension adjusting means for adjusting a displacement of the tension bar due to a variation in the tension of the wire material in a direction that hinders a variation in the tension of the winding. Strip tension control device.