JP2000016700A - Core wire feeding device for molding belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a tensile force for feeding a core wire constant without causing changes with age, eliminate a turn error, facilitate the exchange of bobbins, reduce man-hour, and control a tensile force applied on the core wire during the feed of the core wire in a core wire feed process. SOLUTION: A core wire feeding device 1 for molding belt is provided with a bobbin 17 around which a core wire is wound, a rotary shaft 9 fitted and inserted along a shaft hole of the bobbin 17 so as to rotate idly with it, a rotary braking device 3 which controls in the interlocking relationship with the rotary shaft 9 so that a torque of the rotary shaft 9 becomes constant and is provided on the opposite side to a take-out port for the core wire, an arm 5 which is positioned on the outside of the rotary shaft 9 and pulls out the core wire 15 from the bobbin 17 in the interlocking relationship with the rotary shaft 9, and a guide 14 including one or more rotary bodies mounted on the arm 5 so as to prevent coming off of the core wire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for feeding a core wire for forming a belt, and more particularly to an apparatus for feeding a core wire for forming a belt from a bobbin around which the core wire is wound with a constant tension.

[0002]

2. Description of the Related Art Conventionally, a belt forming core feeding device for feeding a core for forming a belt wound around a bobbin into a spinning process of spirally winding a core around a belt forming die is shown in FIG. The bobbin 17 is fixed and integrated with the rotating shaft 47, and the belt 38 and the pulley 4 are
4, the rotational force of the rotary shaft 47 supported by the bearing 49 is controlled. As a result, the torque applied to the rotating shaft 47 is constant, and therefore the torque applied to the bobbin 17 integrated with the rotating shaft 47 is also constant.
The tension applied to the core wire 15 was different.

In order to keep the tension applied to the core wire constant, a belt forming core wire feeding device using deconveying has been used as shown in FIG. In the figure, a deconveying 50 is a ring-shaped member 52 mounted on the bobbin 17 coaxially and rotatably with the bobbin 17.
And a brake device 54 provided on a shaft portion of the ring-shaped member 52 to brake the rotational movement of the ring-shaped member 52.
The entire device rotates on the outer periphery of the bobbin 17 while applying a brake in accordance with the feeding of the core wire, and applies tension to the core wire 15. The rotational torque of this device keeps the tension constant by the frictional force of the brake device 54.

FIG. 6 shows a conventional filament delivery device disclosed in Japanese Patent Application Laid-Open No. 6-7841. JP-A-6-784
In Japanese Patent Publication No. 1 (1993), the base 60 provided coaxially on the upper part of the bobbin 17, the rotating ring 62 provided rotatably on the base 60, and the torque of the rotating ring 62 fixed to the base 60 using the lines of magnetic force. And a holder 56 provided at the tip of the arm 5 protruding and attached to the outside of the rotating ring 62 for detachably holding the core wire 15 and sending it out.
The rotating ring 62, the arm 5, and the holder 56 are made of aluminum,
It is described that it was formed of a lightweight member such as plastic.

[0005] According to the above configuration, since the torque control is performed by using the perm torque device, the tension applied to the striated body can be controlled without changing over time, and the rotating ring, the arm and the holding member can be controlled. The rotating parts such as tools are made of lightweight material such as aluminum and plastic, so the inertia force of the arm is reduced, preventing unnecessary rotation at the time of turn, and holding the core wire detachably and sending it out Since the tool is used, the core wire is not caught by the striatum delivery device at the time of turning, and a turn mistake can be prevented.

[0006]

By the way, in the case of the conventional example shown in FIG. 5, since the deconveying 50 uses the frictional force of a felt or the like, the felt changes over time and the felt is cut or reduced. Therefore, it is difficult to keep the friction force constant. Further, when the bobbin 17 is replaced (at the time of turn), a catch mistake (when all the core wires of a certain bobbin are sent out and the next bobbin is sent out, the kink is not properly caught by the core wire 15 in the striated body feeding device and a kink is generated. Occurs frequently).

In the case of the prior art shown in FIG.
Since the device for controlling the tension of 4 is the perm torque 58, which is connected to the upper part of the bobbin, if the setting of the perm torque 58 is attempted to be changed while the striatum delivery device is operating, the line To get stuck on the strip 64
The setting of the mat torque 58 cannot be changed, and the tension applied to the filament 64 cannot be changed during operation of the filament delivery device. Therefore, when the core 15 is supplied to the spinning device 46 as shown in FIG. 3 using this device, if the tension of the set core is different from the tension applied to the actual core, the core 39 is There is a great problem that the desired tension cannot be set while winding the wire 15, that is, feedback control cannot be performed.

Further, since the perm torque 58 is connected on the bobbin 17, it is necessary to detach the perm torque 58 when replacing the bobbin 17, and to use the perm torque 58 having a large capacity when replacing the bobbin 17. The torque itself becomes heavy, and replacement requires a great deal of labor and man-hours. In addition, when a large-capacity permanent magnet is connected to the upper part of the bobbin as described above, the position of the center of gravity rises, the balance is deteriorated, and vibration is apt to occur.

Therefore, an object of the present invention is to solve the above-mentioned problems, to keep the feeding tension of the core wire constant without changing over time in the feeding process of the core wire, to make no turn mistakes and to easily replace the bobbin, It is an object of the present invention to provide a belt forming cord feeding device which requires no man-hours and can control the tension applied to the cord while feeding the cord.

[0010]

Means for Solving the Problems In order to achieve the object,
A belt forming core wire feeding device for feeding the core wire with a constant tension from the bobbin wound with the core wire according to claim 1, wherein the bobbin wound with the core wire and the bobbin can be idled along the shaft hole of the bobbin. The rotating shaft fitted in the, and in conjunction with the rotating shaft, control so that the torque of the rotating shaft is constant,
The rotation braking device provided on the opposite side of the core wire outlet, the arm located outside the rotation shaft and pulling the core wire from the bobbin while interlocking with the rotation shaft, and the arm to prevent the core wire from falling off And a guide including at least one or more rotating bodies mounted thereon.

According to the first aspect of the present invention, since the braking device is provided on the side opposite to the outlet for taking out the cord, even when it is necessary to adjust the setting change of the torque such as the perm torque by the scale on the brake body, the arm can be used. And the torque can be changed without contacting the core wire. In addition, since the braking device is located on the opposite side of the core wire outlet, the bobbin is located below the bobbin, the center of gravity is lowered, and vibration of the device is less likely to occur.
Further, since the braking device is provided on the opposite side from the outlet for taking out the core wire, it is not necessary to move the braking device every time the bobbin is replaced, and the bobbin can be easily replaced. Also, by inserting the rotating shaft so that it can rotate idly along the shaft hole of the bobbin,
The rotation can be transmitted to the braking device without transmitting the rotation of the arm to the bobbin.

According to a second aspect of the present invention, there is provided a belt forming cord feeding device which is installed at right angles to the rotating shaft via a gear. According to the second aspect of the present invention, since the braking device is installed orthogonally to the rotation shaft via the gear, the belt forming core wire feeding device can be made more compact.

According to a third aspect of the present invention, there is provided a belt forming cord feeding device, wherein the braking device is one selected from a perma torque, a powder brake, and a hysteresis brake. According to the third aspect, the braking device is one selected from a perm torque, a powder brake, and a hysteresis brake, so that the braking device is suitable for continuous slip use and can maintain a constant torque.

According to a fourth aspect of the present invention, the guide comprises at least one pulley and a core drop prevention roller, and the pulley is provided with a groove through which the core is passed. . According to the fourth aspect, the guide comprises at least one pulley and a core drop prevention roller, and the pulley is provided with a groove for passing the core, so that the core falls off. It can be sent out with stable tension without any trouble.

[0015]

Embodiments of the present invention will be described below. FIG. 1 is a conceptual view of an embodiment of the belt forming cord feeding device of the present invention, and FIG. 2 is a sectional view thereof. In FIG. 1, a belt forming cord feeding device 1 includes aramid fibers, glass fibers, polyester fibers, nylon fibers, and the like as belt forming cords 15 used for a toothed belt, a V belt, a V-ribbed belt, a flat belt, and the like. A bobbin 17 around which one of steel and stainless steel is wound, a rotating shaft 9 in which the bobbin 17 is inserted along the shaft hole of the bobbin 17 so as to be able to rotate freely, and a rotating shaft 9 which is linked with the rotating shaft 9 A rotation braking device provided on the opposite side of the outlet of the core wire 15 to control the torque to be constant;
And a guide 14 including at least one or more rotating bodies attached to the arm 5 so as to prevent the core wire from dropping out of the bobbin 17 while being interlocked with the rotary shaft 9. And

The rotating shaft 9 is installed so as to penetrate through a shaft hole of the bobbin 17.
3 is installed, and the rotating shaft 9 is
Is fixed to the inner ring of the bearing 33, and the rotating shaft 9 can idle. At this time, the bobbin 17 is installed while inserting the bobbin fixed shaft 4 into the shaft hole of the bobbin 17 so that the bobbin 17 is guided by the bobbin fixed shaft 4. The bobbin 17 inserted into the bobbin fixing shaft has its shaft hole fixed by the bobbin holding plate 51, the detent pin 31 and the lock nut 29 and does not rotate. The bottom of the bobbin fixed shaft 4 is fixed to a frame 35 of the case 23 in which the braking device 3 is built.

Since the rotating shaft 4 is rotatable as described above, the spinning machine 46 shown in FIG. 3 is operated, and the core wire 15 is wound around the die 39 while the die 39 rotates. Sometimes, the arm 5 freely rotates in accordance with the speed at which the core wire 15 is wound around the mold.

The braking device 3 includes the spinning machine 46
Above, the arm 5 rotating according to the rotation speed of the mold 39
, Which acts to apply tension to the core wire 15, and is installed below the rotary shaft 9 by meshing with a bevel gear or other gear so that the shafts are orthogonal to each other.
There is no particular problem if the braking device 3 is installed coaxially with the rotating shaft 9, but it is more preferable to install the braking device 3 orthogonally to the rotating shaft 9 because the device itself becomes compact. In the embodiment, the bevel gear 6 is connected to the lower end of the rotating shaft 9 via a coupling 21,
The bevel gear 7 is engaged with the bevel gear 6 so as to be orthogonal to the bevel gear 6, and the output shaft of the braking device 3 is connected to the bevel gear 7 via a coupling 22. The gear used here may be any gear that can mesh the rotating shaft 9 and the axis of the braking device 3 orthogonally, and a worm gear, a bevel gear, a screw gear, and a hypoid gear can be used. Not limited. Further, since the braking device 3 is stored in the case 23, there is no danger that the operator is pinched by the gear 7.

As the braking device 3, a gap type or friction type brake is used, and the gap type is a powder type which transmits torque through magnetic powder (powder) in the gap.
There is a hysteresis type in which torque is transmitted via magnetism in a completely non-contact manner. A powder brake uses a powder brake, and a hysteresis type uses a permanent torque or a hysteresis brake. As the friction type brake, a band brake or a disc brake can be used, but it is preferable to use a gap type for use in continuous slip. In the present invention, a perma torque or a powder brake is mainly used as the braking device 3.

As the braking device 3 of the embodiment, a perm torque is used, and is interlocked with the gear 7 via a coupling to brake the rotation of the rotating shaft 9. The permanent torque is, for example, formed by arranging a plurality of sector-shaped permanent magnets in a disk shape such that N poles and S poles are alternately arranged.
It is composed of a pair of permanent magnet plates and a disk-shaped hysteresis plate coaxially arranged between the permanent magnet plates. When one of the permanent magnet plate and the hysteresis plate is fixed and the other is rotated, one pair of the permanent magnet plates and the hysteresis plate are rotated. When the permanent magnet plates are arranged with the same poles facing each other, they can rotate with low torque,
When the opposite poles are arranged to face each other, the motor can be rotated with high torque. By using this permanent torque, a constant tension can be applied when the core wire 15 is sent out. Braking device 3
When the perm torque is used, it can be installed coaxially with the rotating shaft 9 and also below the rotating shaft 9, but in order not to increase the height of the belt forming core feeding device 1, the rotating shaft 9 is used.
It is more preferable to set up orthogonally.

The powder brake is mainly composed of a stationary portion and a rotating portion, which are roughly divided into a stationary portion and a rotating portion. The stationary portion is constituted by an electromagnet portion having a built-in coil, and the rotating portion is constituted by a cylinder on the driving side and a rotor on the driven side. You. Magnetic powder, so-called powder, is inserted into the gap between the cylinder and the rotor. In operation, when the coil is energized and excited, the magnetic flux generated causes the powder to be connected in a chain along the magnetic path and solidifies, and the coupling force connects the rotor and cylinder, and a braking force acts on the rotor. . By using the powder brake, a constant tension can be applied when the core wire 15 is sent out. When a powder brake is used as the braking device 3, the axis of the braking device 3 needs to be used horizontally so that the powder is not affected by gravity. Therefore,
The powder brake needs to be installed perpendicular to the rotating shaft 9.

The arm 5 is mounted substantially perpendicular to the rotating shaft 9, and its length is longer than the radius of the flange 19.
Further, it is more preferable that the arm 5 is formed in a V-shape and the end of the arm is set at a position substantially at the center of the bobbin 9 in the longitudinal direction, since there is no risk that the core wire 15 comes into contact with the flange 19.

At least one of the guides 14 is attached to the tip of the arm 5 and has a pulley 11 as a rotating body provided with a groove through which the core wire is formed, and a core for holding the core wire and preventing the core wire from coming off the pulley. It is composed of a line separation prevention device 13.
The core strip prevention device 13 is made up of a spring and a roller.
The roller presses the pulley 11 by the force of the spring to prevent the core wire 15 from falling off. The pulley 11 is arranged not only at the tip of the arm 5 but also at the midpoint of the arm 5 and the base of the arm 5,
It serves to guide the core wire to the next step.

[0024]

As described above, according to the present invention, in the first aspect, since the braking device is provided on the opposite side to the outlet of the core wire, the setting change of the torque such as the perm torque can be changed by the scale on the brake body. Even when adjustment is required, the torque can be changed without contacting the arm and the core wire. Further, when the bobbin is installed along the vertical direction along the longitudinal direction of the bobbin since the braking device is located on the opposite side of the outlet for taking out the core wire, the center of gravity is lowered and vibration of the device is less likely to occur. Further, since the braking device is located on the opposite side of the opening for taking out the core wire, it is not necessary to move the braking device every time the bobbin is replaced, and the bobbin can be easily replaced.

According to the second aspect of the present invention, since the braking device is installed orthogonally to the rotary shaft via the gear, the belt forming core wire feeding device can be made more compact.

According to the third aspect of the present invention, since the braking device is one selected from a perm torque, a powder brake, and a hysteresis brake, the braking device is suitable for continuous slip use and has a constant torque. Can be kept.

According to the fourth aspect of the present invention, the guide comprises at least one pulley and a core drop prevention roller, and the pulley is provided with a groove through which the core is passed. Thus, there is an effect that the wire can be sent out with a stable tension without falling off the cord.

[Brief description of the drawings]

FIG. 1 is a schematic view of an embodiment of a belt forming cord feeding device of the present invention.

FIG. 2 is a cross-sectional view of an embodiment of a belt forming cord feeding device of the present invention.

FIG. 3 is a schematic diagram of supplying a core wire to a spinning device using the belt forming core wire feeding device of the present invention.

FIG. 4 is an external perspective view of a conventional belt forming cord feeding device.

FIG. 5 is an external perspective view of a conventional striated body feeding device using deconveying.

FIG. 6 is a schematic view of a conventional filament delivery device using a perma torque device.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Belt forming cord feeding device 3 Braking device 5 Arm 7 Gear 9 Rotating shaft 11 Pulley 13 Cord detachment prevention device 15 Core wire 17 Bobbin 19 Flange 33 Bearing 39 Mold 46 Spinning machine

Claims (4)

[Claims] 1. A belt forming core wire feeding device for feeding a core wire from a bobbin around which the core wire is wound with a certain tension, comprising: a bobbin wound with a core wire; A rotating shaft that is inserted as much as possible, a rotational braking device provided on the opposite side to the outlet for the core wire, so that the torque of the rotating shaft is controlled to be constant in conjunction with the rotating shaft, and a position outside the rotating shaft. And an arm for pulling out the core wire from the bobbin in conjunction with the rotating shaft, and a guide including at least one or more rotating bodies attached to the arm so as to prevent the core wire from falling off. Cord feeding device for belt forming. 2. The belt forming core wire feeding device according to claim 1, wherein the braking device is installed orthogonal to the rotating shaft via a gear. 3. The cord feeding device according to claim 1, wherein the braking device is one selected from a perma torque, a powder brake, and a hysteresis brake. 4. The guide according to claim 1, wherein the guide comprises at least one pulley and a core wire drop prevention roller, and the pulley is provided with a groove through which the core wire passes. Core forming device for belt forming.