JP6311154B2 - Tension control device - Google Patents

Description

  The present invention relates to a film, a film-like object such as a metal foil, woven fabric, paper, tape, adhesive tape, or a plate (such as a silicon substrate or a glass strip) or a metal plate (metal strip). In addition, the present invention relates to a tension control device that controls tension acting on a thick object (hereinafter collectively referred to as a film-like object).

  2. Description of the Related Art Conventionally, a tension control device that controls tension acting on a film-like object being conveyed is known. For example, the tension control device described in Patent Document 1 detects the tension acting on the long sheet-like material in a non-contact manner due to the deflection of the long sheet-like material generated by the ejection of pressurized air, and the detection result Based on the above, the tension acting on the long sheet material is controlled by shifting or braking the roller that conveys the long sheet material.

Japanese Patent Laid-Open No. 05-322681

  However, the tension control device of Patent Document 1 cannot control the distribution in the width direction of the tension acting on the film-like object.

  This invention is made | formed in view of the said subject, and it aims at providing the tension control apparatus which controls distribution of the width direction of the tension | tensile_strength which acts on a film-like thing.

  (1) The present invention has a conveyance surface composed of a curved surface curved in the traveling direction of the belt-like film-like material and a pair of planes continuous to both ends of the curved surface in the traveling direction, and a plurality of the plurality of surfaces formed on the conveyance surface. A chamber that levitates the film-like material from the transfer surface by ejecting fluid from the opening to the film-like material, a rolling actuator that swings the chamber about an axis in the front-rear direction, and a vertical movement of the chamber And a plurality of pressure sensors for detecting the pressure of the fluid interposed between the transport surface and the film-like material, arranged in a row in the left-right direction on the transport surface And control means for operating the rolling actuator and the yawing actuator based on detection results of the plurality of pressure sensors A tension control device comprising a.

  According to the present invention, since the plurality of pressure sensors are arranged in the left-right direction on the transport surface, the pressure of the fluid interposed between the transport surface and the film-like object is detected, and the pressure of the fluid The distribution in the width direction can be understood. The distribution in the width direction of the pressure of the fluid interposed between the transport surface and the film-like object has a correlation with the distribution in the width direction of the tension acting on the film-like object, so the width of the pressure of the fluid detected by multiple pressure sensors By operating the rolling actuator and the yawing actuator based on the direction distribution, the distribution in the width direction of the tension acting on the film-like object can be controlled in a desired manner.

  (2) The present invention also includes an up-and-down actuator that moves the chamber up and down, and the control unit operates the up-and-down actuator based on detection results of the plurality of pressure sensors. The tension control device according to 1).

  According to the said invention, the tension | tensile_strength which acts on a film-like thing can be increased / decreased over the whole width direction by operating an up-and-down actuator and moving a chamber to an up-down direction.

  (3) The present invention also includes a left actuator that moves the left side of the chamber up and down, and a right actuator that moves the right side of the chamber up and down. The rolling actuator includes the left actuator and the right actuator. The left and right actuators operate in opposite directions, and the left and right actuators operate with relative speed in the same direction, or one of the left and right actuators operates, and the up and down actuator Is the tension control device according to the above (2) realized by the left actuator and the right actuator operating at the same speed in the same direction.

  According to the above invention, the rolling actuator and the up-and-actuator can be realized with a simple structure.

  (4) The tension control device according to any one of (1) to (3), wherein the yaw actuator includes a forward / backward actuator that moves forward and backward by acting on one of the left and right sides of the chamber. It is.

  According to the above invention, the yawing actuator can be realized with a simple structure.

  (5) The present invention is also the tension control device according to any one of (1) to (4), wherein the yawing actuator includes a rotary actuator that rotates about a vertical axis.

  According to the above invention, the yawing actuator can be realized with a simple structure.

  According to the tension control device described in the above (1) to (5) of the present invention, the distribution in the width direction of the tension acting on the film-like object can be controlled.

It is a front view of the tension control device concerning the embodiment of the present invention. It is a top view of the tension control apparatus shown in FIG. FIG. 2 is a side view of the tension control device shown in FIG. 1. It is a block diagram which shows the structure of the tension control apparatus shown in FIG. (A) shows the situation where the distribution of tension acting on the film-like material is biased to the left side, and (B) is a front view for explaining the movement of the tension control device in the situation shown in (A). (A) shows the situation biased to the right in the distribution in the width direction of the tension acting on the film-like object, and (B) is a front view for explaining the movement of the tension control device in the situation shown in (A). (A) shows the situation where the overall distribution in the width direction of the tension acting on the film-like object is excessive, (B) is a front view explaining the movement of the tension control device in the situation shown in (A). is there. (A) shows the situation where the overall distribution of tension acting on the film-like material is insufficient, and (B) is a front view for explaining the movement of the tension control device in the situation shown in (A). . (A) And (B) is a top view explaining the motion of the yawing actuator in a tension control apparatus.

  Hereinafter, a tension control device according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the structure of the tension control apparatus 1 demonstrated by the following embodiment.

  First, the configuration of the tension control device 1 will be described with reference to FIGS. FIG. 1 is a front view of the tension control device 1. FIG. 2 is a plan view of the tension control device 1. FIG. 3 is a block diagram showing a configuration of the tension control device 1. FIG. 4 is a block diagram illustrating a configuration of the tension control device 1. Note that in each drawing, a part of the configuration is appropriately omitted for simplification of the drawing. In each drawing, the thickness and size of the member are exaggerated as appropriate.

  The tension control device 1 shown in FIGS. 1 to 3 controls the tension acting on the belt-like film-like material F1 being conveyed, and is arranged in the middle of the traveling film-like material F1. The tension control device 1 sprays a compressed fluid (air in the present embodiment) onto the film-like object F1 being conveyed, and causes the film-like object F1 to float. And the tension control apparatus 1 controls the tension | tensile_strength which acts on the film-like thing F1 by operating various actuators 14-17 based on the pressure of the sprayed fluid. In addition, as a drive source (illustration omitted) which runs the film-like thing F1, the suction roller etc. which BELLMATIC Co., Ltd. (Mizuho-cho, Nishitama-gun, Tokyo) marketed are employable.

  Specifically, the tension control device 1 includes a chamber 10, a pair of supply pipes 11 and 12, a pedestal 13, a left actuator 14, a right actuator 15, an advance / retreat actuator 16, a rotation actuator 17, and the like. ing.

  The chamber 10 is a metal air turn bar that has an elongated shape that is shaped like a kamaboko in a cross-sectional view. For details of the air turn bar, see, for example, JP2013-023371A. However, the chamber 10 is not limited to being made of metal, and may be made of polyvinyl chloride, polyethylene, polypropylene, or the like. The chamber 10 includes a pair of supply ports (not shown) provided on both side surfaces, and a transport surface 18 that transports the film-like object F1.

  A supply pipe 11 or 12 is connected to a pair of supply ports (not shown), respectively. A fluid compressed from a pair of supply ports is supplied into the chamber 10 through a pair of supply pipes 11 and 12. Note that one of the supply ports may be closed with a lid or the like, and the fluid supplied through one supply pipe 11 or 12 may be received. For example, the supply port to which the supply pipe 11 is connected may be closed with a lid or the like so that the fluid is supplied through the supply pipe 12.

The conveyance surface 18 includes a semicircular curved surface 18a in a cross-sectional view and a pair of flat surfaces 18b smoothly connected to the curved surface 17b, and faces the film-like object F1 to be wound. That is, the conveyance surface 18 includes a curved surface 18a curved in the traveling direction of the belt-like film-like object F1 and a pair of flat surfaces 18b continuous at both ends of the curved surface 18a in the traveling direction. The transport surface 18 is formed with a plurality (a large number) of openings 18 c that eject compressed fluid supplied from a pair of supply ports (not shown). The plurality of openings 18c are preferably formed by press punching (punching), but are not limited to press punching. In the drawings, the plurality of openings 18c are drawn to be exaggerated in terms of expression, but the area is preferably 0.0025πmm ² or more and 25πmm ² or less, respectively. That is, the diameter is preferably 0.1 mm or more and 10 mm or less.

  The chamber 10 is fixed to the pedestal 13. The pedestal 13 is supported by various actuators 14 to 17 and is moved or swung by the various actuators. As a result, the chamber 10 fixed to the pedestal 13 is moved or rocked.

  Specifically, the chamber 10 is swung around an axis in the front-rear direction (Y-axis direction in the drawing) by at least one of the left actuator 14 and the right actuator 15 (see FIGS. 5B and 6B). ). The chamber 10 is swung around the axis in the vertical direction (Z-axis direction in the drawing) by the advance / retreat actuator 16 or the rotary actuator 17 (see FIGS. 9A and 9B). The chamber 10 is moved in the vertical direction (Z-axis direction in the drawing) by the left actuator 14 and the right actuator 15 (see FIG. 1).

  The left actuator 14 is fixed to a rotary plate 19 that rotates in a horizontal plane by a rotary actuator 17. The left actuator 14 supports the left side of the pedestal 13 (right side as viewed from the front of the tension control device 1) and moves the left side of the pedestal 13 in the vertical direction (Z-axis direction in the drawing). As a result, the left actuator 14 moves the left side of the chamber 10 fixed to the pedestal 13 up and down.

  The right actuator 15 is fixed to a rotating plate 19 that rotates in a horizontal plane by a rotary actuator 17. The right actuator 15 supports the right side of the pedestal 13 (left side toward the front of the tension control device 1) and moves the right side of the pedestal 13 in the vertical direction (Z-axis direction in the drawing). As a result, the right actuator 15 moves the right side of the chamber 10 fixed to the pedestal 13 up and down.

  The left actuator 14 and the right actuator 15 together function as a rolling actuator that swings the chamber 10 about an axis in the front-rear direction (Y-axis direction in the drawing). Specifically, in the rolling actuator, the left actuator 14 and the right actuator operate in opposite directions, and the left actuator 14 and the right actuator 15 operate in the same direction with a relative speed, or the left actuator 14 and the right actuator 15. This is achieved by operating one of the two.

  The left actuator 14 and the right actuator 15 function as an up-and-down actuator that moves the chamber 10 in the vertical direction (Z-axis direction in the drawing). Specifically, the up-and-down actuator is realized by the left actuator 14 and the right actuator 14 operating at the same speed in the same direction.

  The advancing / retreating actuator 16 acts on one of the left and right sides of the swing plate 21 that swings in the horizontal plane around the swing shaft 20 (in this embodiment, on the left side (right side as viewed from the front of the tension control device 1)). By moving forward and backward in the Y-axis direction in the drawing, the swing plate 21 is swung around the swing shaft 20 in a horizontal plane. That is, the advance / retreat actuator 16 acts indirectly on one of the left and right sides of the chamber 10 (in this embodiment, on the left side (right side as viewed from the front of the tension control device 1)) and moves back and forth (Y-axis direction in the drawing). Thus, it functions as a yawing actuator that swings the chamber 10 about an axis in the vertical direction (Z-axis direction in the drawing).

  The rotary actuator 17 is fixed to a swing plate 21 that swings around a swing shaft 20 in a horizontal plane by an advance / retreat actuator 16. The rotary actuator 17 rotates about the axis in the vertical direction (Y-axis direction in the drawing) to rotate the rotary plate 19 to which the left actuator 14 and the right actuator 15 are fixed in a horizontal plane. That is, the rotary actuator 17 functions as a yawing actuator that swings the chamber 10 about an axis in the vertical direction (Y-axis direction in the drawing).

  As shown in FIG. 4, the tension control device 1 further includes a pressure sensor 30, a calculation display 31, a motor inverter 32, a blower 33, a plurality of pressure sensors 34, a calculation display 35, and the like. It has. In addition, the structure described in the patent 4575533 can be referred for these structures. For details, refer to Japanese Patent No. 4575533.

  The pressure sensor 30 is provided in the chamber 10. The pressure sensor 30 detects the pressure of the fluid in the chamber 10 and outputs the detection result to the calculation display 31.

  The calculation indicator 31 controls the blower 33 by the motor inverter 32 by transmitting a control signal to the motor inverter 32 based on the detection result of the pressure sensor 34. The motor inverter 32 controls the blower 33 based on the control signal from the calculation display 31. The blower 33 supplies fluid (compressed air in this embodiment) into the chamber 10 through the supply pipes 11 and 12.

  The plurality of pressure sensors 34 are provided on the transport surface 18, strictly speaking, on the back side of the transport surface 18 (inside the chamber 10) so as to be aligned in the left-right direction (in the drawing). Each of the plurality of pressure sensors 34 detects the pressure of the fluid interposed between the transport surface 18 and the film-like object F1 and outputs the detection result to the calculation display 35.

  The fluid pressure detected by the plurality of pressure sensors 34 is correlated with the tension acting on the film-like object F1. That is, the distribution in the width direction of the pressure of the fluid detected by the plurality of pressure sensors 34 has a correlation with the distribution in the width direction of the tension acting on the film-like object F1. Thus, it can be said that the plurality of pressure sensors 34 indirectly detect the tension acting on the film-like object F1, so in the present document, for the sake of convenience, the object detected by the plurality of pressure sensors 34 is defined as a film. It may be expressed as a tension acting on the object F1.

  The calculation indicator 35 controls the various actuators 14 to 17 by transmitting control signals to the various actuators 14 to 17 based on the detection results of the plurality of pressure sensors 34.

  Next, the movement of the tension control device 1 in a situation where the tension acting on the film-like object F1 is biased to the left in the width direction will be described with reference to FIG. FIG. 5A shows a situation in which the distribution in the width direction of the tension acting on the film-like object F1 is biased to the left side. FIG. 5B illustrates the movement of the tension control device 1 in the situation shown in FIG.

  As shown in FIG. 5 (A), the tension acting on the film-like object F1 is biased to the left side (right side in the figure) in the width direction (X-axis direction in the figure) due to the meandering of the film-like substance F1. In the situation, as shown in FIG. 5B, the rolling actuators (left actuator 14 and right actuator 15) that swing the chamber 10 about the axis in the front-rear direction (Y-axis direction in the drawing) are operated, Try to eliminate tension bias. For example, the left actuator 14 is contracted to move the left side of the chamber 10 (right side in the drawing) downward, and the right actuator 15 is extended to move the right side of the chamber 10 (left side in the drawing) upward. Become. This eliminates meandering and eliminates the bias in tension.

  Next, the movement of the tension control device 1 in a situation where the tension acting on the film-like object F1 is biased to the right in the width direction will be described with reference to FIG. FIG. 6A shows a situation in which the distribution in the width direction of the tension acting on the film-like object F1 is biased to the right side. FIG. 6B explains the movement of the tension control device 1 in the situation shown in FIG.

  As shown in FIG. 6A, the tension acting on the film-like material F1 is biased to the right side (left side in the drawing) in the width direction (X-axis direction in the drawing) due to the meandering of the film-like material F1. In the situation, as shown in FIG. 6B, the rolling actuators (the left actuator 14 and the right actuator 15) that swing the chamber 10 around the axis in the front-rear direction (the Y-axis direction in the drawing) are operated. Try to eliminate tension bias. For example, the left actuator 14 is extended to move the left side of the chamber 10 (right side in the drawing) upward, and the right actuator 15 is contracted to move the right side of the chamber 10 (left side in the drawing) downward. Become. This eliminates meandering and eliminates the bias in tension.

  Next, the movement of the tension control device 1 in a situation where the tension acting on the film-like object F1 is excessively large will be described with reference to FIG. FIG. 7A shows a situation where the overall distribution of tension acting on the film-like object F1 is excessive. FIG. 7B explains the movement of the tension control device 1 in the situation shown in FIG.

  As shown in FIG. 7A, in a situation where the tension acting on the film-like material F1 is excessively large as shown in FIG. 7B, the chamber 10 is moved in the vertical direction (in the drawing). The up-and-down actuators (left actuator 14 and right actuator 15) that are moved in the Z-axis direction are operated to reduce the tension. That is, the chamber 10 is moved downward by contracting the left actuator 14 and the right actuator 15.

  Next, the movement of the tension control device 1 in a situation where the tension acting on the film-like object F1 is totally insufficient will be described with reference to FIG. FIG. 8 (A) shows a situation in which the distribution in the width direction of the tension acting on the film-like object F1 is totally lacking. FIG. 8B explains the movement of the tension control device 1 in the situation shown in FIG.

  As shown in FIG. 8A, in a situation where the tension acting on the film-like material F1 is generally insufficient, as shown in FIG. 8B, the chamber 10 is moved in the vertical direction (Z in the drawing). The up-and-down actuators (left actuator 14 and right actuator 15) moved in the axial direction are operated to reduce the tension. That is, the chamber 10 is moved upward by extending the left actuator 14 and the right actuator 15.

  Next, the movement of the yawing actuator (advance / retreat actuator 16 or rotation actuator 17) in the tension control device 1 will be described with reference to FIG. FIG. 9A is a plan view for explaining the movement of the yawing actuator (advance / retreat actuator 16) in the tension control device 1. FIG. FIG. 9B is a plan view for explaining the movement of the yawing actuator (rotary actuator 17) in the tension control device 1. FIG.

  As shown in FIG. 9A, the chamber 10 swings clockwise around the swing shaft 20 by extending the advance / retreat actuator 16 that is a yawing actuator. On the other hand, although not shown, the chamber 10 swings counterclockwise around the swing shaft 20 by contracting the advance / retreat actuator 16 which is a yawing actuator. That is, by extending and retracting the advance / retreat actuator 16, the chamber 10 swings around an axis in the vertical direction (Z-axis direction in the drawing).

  As shown in FIG. 9B, the rotation of the rotary actuator 17 that is a yawing actuator clockwise rotates the chamber 10 clockwise around the axis of the rotary actuator 17. On the other hand, although not shown in the drawings, the chamber 10 swings counterclockwise around the axis of the rotary actuator 17 by rotating the rotary actuator 17 that is a yawing actuator counterclockwise. That is, by rotating the rotary actuator 17, the chamber 10 swings about an axis in the vertical direction (Z-axis direction in the drawing).

  It should be noted that which of the advance / retreat actuator 16 and the rotary actuator 17 is to be operated may be appropriately determined depending on the distribution of the tension acting on the film-like object F1 in the width direction, the twisting condition of the film-like object F1, and the like. Note that the state of twisting of the film-like object F1 is separately detected or separately calculated from the distribution in the width direction of the tension acting on the film-like object F1.

  According to the tension control device 1 described above, the plurality of pressure sensors 24 are provided on the conveyance surface 18 so as to be arranged in a line in the left-right direction (X-axis direction in the drawing), and therefore the conveyance surface 18 and the film-like object F1. The pressure of the fluid intervening between the two can be detected, and the distribution of the pressure of the fluid in the width direction (X direction in the drawing) can be grasped. The distribution in the width direction (X-axis direction in the drawing) of the pressure of the fluid interposed between the transport surface 18 and the film-like material F1 is the distribution in the width direction (X-axis direction in the drawing) of the tension acting on the film-like material F1. Since there is a correlation, the tension acting on the film-like object F1 by operating the various actuators 14 to 17 based on the distribution in the width direction of the fluid pressure detected by the plurality of pressure sensors 24 (X-axis direction in the drawing). The distribution in the width direction (X-axis direction in the drawing) can be controlled in a desired manner.

  Then, by operating the left actuator 14 and the right actuator 15 as up-and-down actuators and moving the chamber 10 in the vertical direction (Z-axis direction in the drawing), the tension acting on the film-like object F1 is changed in the width direction (drawing). In the X-axis direction).

  Further, the left actuator 14 and the right actuator 15 operate in opposite directions, and the left actuator 14 and the right actuator 15 operate in the same direction with a relative speed, or one of the left actuator 14 and the right actuator 15 operates. Thus, since the rolling actuator is realized, the rolling actuator can be realized with a simple structure.

  Furthermore, since the left and right actuators 14 and 15 operate at the same speed in the same direction as each other, an up-and-down actuator is realized. Therefore, the up-and-down actuator can be realized with a simple structure.

  Since the yawing actuator is provided with the advance / retreat actuator 16 which acts on one of the left and right sides of the chamber 10 and advances / retreats in the front / rear direction (Y-axis direction in the drawing), the yawing actuator can be realized with a simple structure.

  Further, since the rotary actuator 17 that rotates about the axis in the vertical direction (Z-axis direction in the drawing) is provided as the yawing actuator, the yawing actuator can be realized with a simple structure.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea thereof. Moreover, the structure of each modification is applicable to another modification as far as possible.

  That is, in the above embodiment, the position, size, length, shape, material, orientation, quantity, and the like of each component can be changed as appropriate.

1 Tension Control Device 10 Chamber 14 Left Actuator 15 Right Actuator 16 Advance / Retreat Actuator 17 Rotation Actuator 18 Transport Surface 18a Curved Surface 18b Plane 18c Opening 34 Pressure Sensor 35 Operation Indicator (Control Unit)
F1 film

Claims (5)

A belt-like film-like object having a curved surface curved in the running direction and a conveying surface comprising a pair of planes continuous at both ends of the curved surface in the running direction, and the film-like shape from a plurality of openings formed in the conveying surface A chamber in which the film-like object is levitated from the conveying surface by ejecting fluid to
A rolling actuator that swings the chamber around a longitudinal axis;
A yawing actuator that swings the chamber about a vertical axis;
A plurality of pressure sensors that are arranged in a row in the left-right direction on the transport surface, and that detect the pressure of the fluid interposed between the transport surface and the film-like object;
A tension control device comprising: control means for operating the rolling actuator and the yawing actuator based on detection results of the plurality of pressure sensors. An up-and-down actuator for moving the chamber in the vertical direction;
The tension control apparatus according to claim 1, wherein the control unit operates the up-and-down actuator based on detection results of the plurality of pressure sensors. A left actuator that moves the left side of the chamber up and down;
A right actuator that moves the right side of the chamber up and down, and
In the rolling actuator, the left actuator and the right actuator operate in directions opposite to each other, and the left actuator and the right actuator operate in the same direction with a relative speed, or one of the left actuator and the right actuator. Is realized by operating,
The tension control device according to claim 2, wherein the up-and-down actuator is realized by the left actuator and the right actuator operating at a constant speed in the same direction.   The tension control device according to any one of claims 1 to 3, further comprising an advancing / retreating actuator that acts on one of the left and right sides of the chamber and moves back and forth as the yawing actuator.   The tension control device according to any one of claims 1 to 4, further comprising a rotary actuator that rotates about a vertical axis as the yawing actuator.

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