JP2007331915A - Tension device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tension device capable of imparting precision tension without being influenced by the winding state and a winding diameter of a first bobbin as a feeding side of a material. <P>SOLUTION: The tension device for imparting appropriate tension to the material Y drawn from the first bobbin 1 and wound by a second bobbin 10 is provided with a material drawing part A and a material winding part B. The material drawing part A is provided with the first bobbin 1 and a drawing pulley 2. The material winding part B is provided with the second bobbin 10 and the tension pulley 11. A dancer 20 is placed on the material Y at the material connection part M for continuously connecting the material drawing part A with the material winding part B. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tension device that applies an appropriate tension to a traveling material or the like.

  As this type of technology, Patent Document 1 discloses a tension control device that applies an arbitrary tension to a traveling yarn. This tension control device includes, in order from the upstream side of the yarn path of the yarn 10, a spring tensor 3 that generates initial tension and a tension pulley 6 that applies tension to the yarn 10. An appropriate regenerative brake device 7 is connected to the shaft member 11 of the tension pulley 6, and tension corresponding to the brake torque of the shaft member 11 in the regenerative brake device 7 is applied to the thread 10. Yes.

Japanese Patent Laying-Open No. 2001-247259 (see paragraph numbers 0013, 0014, 0022, 0024, FIG. 5 (a))

However, in the configuration of Patent Document 1, high-precision tension cannot always be applied to the yarn 10 depending on the state of the yarn 10 supply source.
Although not limited to the above-mentioned Patent Document 1, in this field where tension is applied to a traveling yarn, the tension applied is controlled by slight variations such as the winding state of a yarn around a yarn bobbin as a yarn supply source. It was difficult to apply a highly accurate and stable tension.

  The present invention has been made in view of such various points, and its main purpose is to influence the winding state and the winding diameter of the material in the first bobbin as a material (or core wire, the same shall apply hereinafter) supply source. An object of the present invention is to provide a tension device that can apply a highly accurate and stable tension without being applied.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

According to a first aspect of the present invention, a tension device configured as follows is provided.
That is, a tension device for applying an appropriate tension to the material drawn out from the first bobbin disposed upstream in the material delivery direction and wound up by the second bobbin disposed downstream in the delivery direction. Includes a material drawing portion and a material winding portion in order from the upstream side in the delivery direction.
The material drawing portion is provided on the downstream side in the delivery direction with respect to the first bobbin and the first bobbin, and a first servo motor is connected to the shaft portion to draw the material from the first bobbin. And a pulling pulley.
The material winding unit is provided on the upstream side in the delivery direction with respect to the second bobbin and the second bobbin, and in order to apply an appropriate tension to the material wound on the second bobbin, A tension pulley having a second servo motor connected to the shaft.
A dancer is placed on the material in the material connecting portion for connecting the material drawing portion and the material winding portion.

  According to this, since the dancer is present, only the tension of the material between the tension pulley and the second bobbin acts on the tension pulley. Appropriate tension can be easily applied to the material to be taken. Therefore, a tension device capable of applying a highly accurate and stable tension can be obtained.

  The above material may be a yarn.

Moreover, according to the 3rd viewpoint of this invention, the tension apparatus comprised as follows is provided.
That is, the core wire is spirally wound at a predetermined interval with respect to a mold for forming a belt which is pulled out from the first bobbin arranged upstream in the delivery direction of the core wire and in which the core wire is embedded in the longitudinal direction. A tension device for forming a belt for applying an appropriate tension to the core wire, which is supplied to a spinning device disposed downstream in the delivery direction for winding in a shape, from the upstream side in the delivery direction. In order, a core wire drawing portion and a core wire winding portion are provided.
The core wire lead-out portion is provided on the downstream side in the delivery direction with respect to the first bobbin and the first bobbin, and a first servo motor is provided on a shaft portion thereof to pull out the core wire from the first bobbin. And a pull-out pulley connected thereto.
The core winding unit is provided on the upstream side of the spinning device and the delivery direction with respect to the spinning device, and in order to apply an appropriate tension to the core wire supplied to the spinning device, And a tension pulley having a second servo motor connected to the portion.
A dancer is placed on the core wire in the core wire connecting portion for connecting the core wire drawing portion and the core wire winding portion.

Moreover, it is preferable that the first servo motor connected to the shaft portion of the drawer pulley is provided with first speed control means for controlling the rotational speed of the drawer pulley.
According to this, the tension of the material wound around the first bobbin and the tension of the material suspended on the tension pulley are insulated in tension. In other words, both of these tensions can be made independent so as not to interfere with each other. Therefore, it is possible to provide a tension device capable of applying a highly accurate and stable tension regardless of the winding state or the winding diameter of the material on the first bobbin.

  Further, it is preferable that the first bobbin is provided with a rotation control means including an appropriate brake shoe, for example. According to this, the drawer pulley can stably pull out the material from the first bobbin without loosening.

  Next, an embodiment of the present invention will be described. First, the configuration of the tension device according to the first embodiment of the present invention will be described. The tension device according to this embodiment is pulled out from a first bobbin disposed upstream in the material delivery direction and wound up by a second bobbin disposed downstream in the delivery direction. It is for giving tension. FIG. 1 is a schematic view of a tension device according to a first embodiment of the present invention.

  In the present embodiment, the tension device 100 is provided in order from the upstream side in the delivery direction, and the material drawing part A and the material winding part B, and the material for connecting the material drawing part A and the material winding part B are connected. And a connection portion M.

The material drawing portion A includes, for example, a first bobbin 1 in which a material Y such as a rope (a linear object) is wound in a predetermined amount / shape, and a downstream side in the delivery direction from the first bobbin 1 And a pull-out pulley 2 having a first servo motor 3 connected to a shaft portion 2a for pulling out the material Y from the first bobbin 1.
The shaft portion 1a of the first bobbin 1 is provided with an appropriate brake device (rotation control means) 5 including, for example, a brake shoe. As a result, the rotational speed of the first bobbin 1 is not excessive.
The first servo motor 3 is connected to a first speed control means 4 for appropriately controlling the rotational speed of the drawing pulley 2. Further, since the drawing pulley 2 controls the traveling speed of the material Y, the drawing pulley 2 is configured not to slide with respect to the material Y.

The material winding unit B includes an empty second bobbin 10 for winding the material Y drawn from the first bobbin 1 into a predetermined amount / shape, and the feeding direction from the second bobbin 10. A tension pulley 11 having a second servo motor 12 connected to a shaft portion 11a thereof, in order to apply an appropriate tension to the material Y wound on the second bobbin 10. It is configured.
The second bobbin 10 is configured to be rotated at a desired rotational speed by a bobbin rotating means (not shown).
The second servo motor 12 is connected to torque control means 13 for appropriately controlling the torque applied to the tension pulley 11.
A tension measuring device 15 for monitoring the winding tension of the material Y wound around the second bobbin 10 is provided between the tension pulley 11 and the second bobbin 10. Specifically, the tension measuring device 15 is composed of appropriate guide rollers 16 and 16 for securing the travel path of the material Y, and a known tension measuring machine (for example, a load cell type) 17. Yes.
The tension measuring machine 17 and the torque control means 13 are connected by an appropriate electric wire t1. As a result, the tension of the material Y wound up by the second bobbin 10 (winding tension) can be fed back to the torque control means 13.
More specifically, the above-described “torque control” is a so-called control that appropriately controls only the torque applied to the tension pulley 11 regardless of the winding speed of the material Y wound by the second bobbin 10. Torque control.

The material connecting portion M is for connecting the material drawing portion A and the material winding portion B described above. Specifically, the configuration is as follows.
That is, the material Y drawn out from the first bobbin 1 and sent out toward the second bobbin 10 is largely bypassed vertically downward between the pull-out pulley 2 and the tension pulley 11. On the material Y, a dancer 20 formed in a disk shape is placed. In other words, the dancer 20 is placed on the material Y that largely detours vertically downward between the drawing pulley 2 and the tension pulley 11.
A long dancer support arm 21 having one end connected to the shaft portion 20a of the dancer 20 is pivotally connected to a potentiometer 22 shown at the other end. Thereby, as shown by a solid line and a two-dot chain line in FIG. 1, the dancer 20 is configured to be rotatable around the other end of the dancer support arm 21. In other words, because the dancer support arm 21 is long, the dancer 20 is configured to move up and down in a substantially vertical direction. And, by configuring the material connecting portion M as described above, the material Y is the pulling pulley 2 disposed on the upstream side in the delivery direction, and the tension pulley 11 also disposed on the downstream side, In the meantime, a tension-free state can be temporarily established via the dancer 20. That is, a tension other than the tension caused by the weight of the material Y itself and the weight of the dancer 20 does not act on the material Y between the pulleys 3 and 11.

  Next, the operation of the tension device 100 according to the present embodiment will be described in order along the delivery direction of the material Y.

First, before starting the winding of the material Y by the second bobbin 10, the control (brake control) for the first bobbin 1 of the brake device 5 provided in the first bobbin 1 is released in advance. Keep it. Then, the material Y is suspended as follows. That is, the material Y pulled out from the first bobbin 1 is suspended in this order on the pull-out pulley 2, the dancer 20, the tension pulley 11, and the tension measuring device 15, and the outer periphery of the second bobbin 10 Lock the end of material Y to the surface.
Second, a suitable tension (winding tension) for the material Y wound around the second bobbin 10 is set in the torque control means 13. That is, the torque control means 13 appropriately controls the torque applied to the tension pulley 11, so that the tension of the material Y sent to the downstream side of the tension pulley 11 is a desired tension. The torque control means 13 is set.
Third, the drawing pulley 2 and the second bobbin 10 are started to rotate, and at the same time, the brake device 5 is operated with respect to the first bobbin 1. As a result, the problem that the first bobbin 1 rotates unnecessarily excessively due to inertia and the material Y loosens can be prevented.
The first speed control means 4 appropriately controls the first servo motor 3 so that the peripheral speed of the drawing pulley 2 and the peripheral speed of the second bobbin 10 are the same. Yes.
As described above, the material Y drawn out from the first bobbin 1 is configured to be wound around the second bobbin 10 in a form to which a desired tension is applied.

  Although the configuration and operation of the tension device 100 according to the present embodiment have been described above, the tension device 100 is excellent as follows.

That is, in the tension device 100, as shown in FIG. 1, the tension device 100 is adjacent to the upstream side of the tension pulley 11 for applying an appropriate tension to the material Y wound around the second bobbin 10. A material connecting portion M having a dancer 20 capable of freeing the tension of the material Y is disposed.
According to this, only the tension of the material Y between the tension pulley 11 and the second bobbin 10 acts on the tension pulley 11 due to the presence of the dancer 20. In other words, the tension of the material Y between the drawing pulley 2 and the tension pulley 11 does not affect the tension of the material Y between the tension pulley 11 and the second bobbin 10. it can. In short, the former tension and the latter tension can be separated in tension. Therefore, an appropriate tension is applied to the material Y wound around the second bobbin 10 without being affected by the winding state and the winding diameter of the material Y at the first bobbin 1 as the supply source of the material Y. Therefore, the tension device can apply a highly accurate and stable tension.

In the present embodiment, the first servo motor 3 connected to the shaft portion 2a of the drawer pulley 2 is provided with first speed control means 4 for controlling the rotational speed of the drawer pulley 2. Yes. That is, in order to control the traveling speed of the material suspended on the drawer pulley, the drawer pulley and the material suspended on the drawer pulley are configured to be non-slidable. Therefore, the material Y has a predetermined speed without being affected by the tension of the material Y between the first bobbin 1 and the drawing pulley 2 and the tension of the material Y between the drawing pulley 2 and the dancer 20. And is drawn out from the first bobbin 1.
According to this, the tension of the material Y wound around the first bobbin 1 and the tension of the material Y suspended on the tension pulley 11 are separated in a tension manner (edge cut). Is done. In other words, both of these tensions can be made independent so as not to interfere with each other. Therefore, the above-described effect that only the tension of the material Y between the tension pulley 11 and the second bobbin 10 acts on the tension pulley 11 is further exhibited.

  In the present embodiment, the first bobbin 1 is provided with a brake device (rotation control means) 5 including, for example, an appropriate brake shoe. According to this, since the first bobbin 1 is suppressed from rotating excessively due to inertia, the pull-out pulley 2 stably pulls out the material Y from the first bobbin 1 without loosening. be able to.

  Next, a tension device according to a second embodiment of the present invention will be described. Here, the description will focus on the differences of the present embodiment from the first embodiment described above. In short, in the present embodiment, the tension device is used for belt forming.

The object to which tension is applied in the first embodiment is a linear object such as a rope.
On the other hand, the object to which tension is applied in the present embodiment is a core wire embedded in the longitudinal direction of a belt such as a toothed belt, a V belt, a V-ribbed belt, or a flat belt. The core wire is made of, for example, steel, polyester, polyamide, or aromatic aramid fiber. That is, a core wire is wound around the first bobbin 1.
Further, the core wire to which an appropriate tension is applied by the tension pulley 11 is spirally wound around the metal mold for forming a belt in which the core wire is embedded in the longitudinal direction at a predetermined interval. It is configured to be supplied to an unillustrated spinning device.

As described above, in this embodiment, the tension device for forming the belt is configured as follows.
In other words, this belt forming tension device is drawn out from the first bobbin 1 disposed upstream in the core wire sending direction, and is applied to a mold for forming a belt in which the core wire is embedded in the longitudinal direction. Thus, an appropriate tension is applied to the core wire supplied to a spinning device that spirally winds the core wire at a predetermined interval.
And this tension apparatus is provided with the core wire drawing-out part and the core wire winding-up part in order from the upstream of the said delivery direction.
The core wire lead-out portion is provided on the downstream side of the first bobbin 1 and the delivery direction with respect to the first bobbin 1, and in order to pull out the core wire from the first bobbin 1, its shaft portion 2a And a drawing pulley 2 to which a first servo motor 3 is connected.
The core winding unit is provided on the upstream side in the delivery direction with respect to the spinning device and the spinning device, in order to apply an appropriate tension to the core wire supplied to the spinning device, A tension pulley 11 having a second servo motor 12 connected to the shaft portion 11a.
A dancer 20 is placed on the core wire in the core wire connecting portion for connecting the core wire lead-out portion and the core wire take-up portion.

  According to the above configuration, a highly accurate and stable tension can be applied to the core wire supplied to the spinning device as in the first embodiment described above.

The schematic diagram of the tension device concerning a 1st embodiment of the present invention.

Explanation of symbols

1 1st bobbin 2 Pull-out pulley 10 2nd bobbin 11 Tension pulley 20 Dancer
A Material drawer
B Material winding part
M material connection part 100 tension device

Claims (5)

In a tension device for applying an appropriate tension to the material, which is pulled out from a first bobbin disposed upstream in the material delivery direction and wound up by a second bobbin disposed downstream in the delivery direction. ,
This tension device is in order from the upstream side in the delivery direction,
A first pulley that is provided downstream of the first bobbin in the delivery direction with respect to the first bobbin, and a first servo motor is connected to a shaft portion of the first bobbin to pull out the material from the first bobbin; A material drawer comprising:
A second servo motor is provided on the shaft portion of the second bobbin and in order to apply an appropriate tension to the material wound on the second bobbin and provided upstream of the second bobbin in the delivery direction. A tension pulley to which the material is connected, and a material winding unit,
With
A tension device, wherein a dancer is placed on the material in a material connecting portion for connecting the material drawing portion and the material winding portion.   The tension device according to claim 1, wherein the material is a yarn. The core wire is spirally formed at a predetermined interval with respect to a mold for forming a belt which is pulled out from a first bobbin arranged upstream in the delivery direction of the core wire and has the core wire embedded in the longitudinal direction. In a tension device for forming a belt for applying an appropriate tension to the core wire, which is supplied to a spinning device disposed downstream of the delivery direction for winding,
This tension device is in order from the upstream side in the delivery direction,
The first bobbin and a pulling pulley that is provided downstream of the first bobbin in the delivery direction and has a first servo motor connected to a shaft portion thereof to draw out the core wire from the first bobbin. And a lead-out portion comprising:
A second servo motor is connected to the shaft portion to provide an appropriate tension to the spinning device and the core wire that is provided upstream of the spinning device in the delivery direction and is supplied to the spinning device. A tension pulley, and a core winding unit,
With
A tension device for forming a belt, wherein a dancer is placed on the core wire in a core wire connecting portion for connecting the core wire drawing portion and the core wire winding portion.   The first servo motor connected to the shaft portion of the drawer pulley is provided with first speed control means for controlling the rotational speed of the drawer pulley. 4. The tension device according to any one of 3.   The tension device according to any one of claims 1 to 4, wherein the first bobbin is provided with rotation control means.

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