JP6174540B2 - Accumulator - Google Patents

Description

  The present invention relates to an accumulator device.

  2. Description of the Related Art Conventionally, an accumulator device provided in a transport path for a transported object such as a film is known. For example, the accumulator is configured to temporarily store the object to be conveyed supplied from the upstream side when replacing the winding core for winding the object to be conveyed supplied from the upstream side. As a result, the core can be exchanged without stopping the conveyance of the object to be conveyed supplied from the upstream side. Specifically, the accumulator includes a roller around which the object to be conveyed is wound, and stores or discharges the object to be conveyed by changing the conveyance path length of the object to be conveyed by moving the roller. It has become.

  Conventionally, a dancer device provided in the conveyance path of an object to be conveyed is also known. The dancer device is provided, for example, to control the tension of the object to be conveyed that is supplied from the upstream side and wound around the core. Specifically, the dancer apparatus includes a roller around which the object is wound, an arm that supports the roller in a swingable manner, and a pressure device that applies a predetermined pressure to the arm. Then, by correcting the rotation speed of the winding core in accordance with the position of the roller, it is possible to keep the tension of the conveyed object applied by the roller constant.

  And the supply apparatus provided with an accumulator apparatus and a dancer apparatus is disclosed by patent document 1. FIG.

JP 2001-291442 A

  However, when the dancer device is provided in addition to the accumulator device as in the above-mentioned Patent Document 1, since the transport path of the transported object becomes long, the tension control tends to become unstable, and the roller This increases the number of, so there is a problem that mechanical loss (friction resistance) increases.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an accumulator that can stabilize the tension control and reduce mechanical loss.

Film accumulator device according to the present invention includes a pair of guide rollers, and a roller disposed between the pair of guide rollers, the guide rollers and the roller and is wound around the film, the roller is moved The film is stored or released by changing the length of the transport path. The accumulator includes a pair of link mechanisms that respectively support both ends of the roller in the axial direction, a base portion on which the link mechanism is provided, and a shaft that is provided at the lower end and that can be lifted and lowered in the vertical direction. By moving up and down, the roller moves up and down between the pair of guide rollers so that the film transport path length is changed. The link mechanism is configured to support the roller in a swingable manner with respect to the base portion. Roller is configured to apply tension to the full Irumu. A connecting member for connecting the pair of link mechanisms is provided between the pair of link mechanisms, and the connecting member is disposed above the rollers and between the pair of guide rollers.

  With this configuration, it is not necessary to separately provide a dancer roller by causing the accumulator roller to function as a dancer roller. As a result, the film transport path is shortened compared to the case where a dedicated dancer roller is provided, so that the tension control of the film can be stabilized and the number of rollers can be reduced, so that the mechanical loss can be reduced. .

  According to the accumulator device of the present invention, it is possible to stabilize the tension control and reduce mechanical loss.

It is the schematic diagram which showed the winding apparatus provided with the accumulator by one Embodiment of this invention. It is the schematic diagram which showed the state by which the film was stored by the accumulator. It is a figure for demonstrating the raising / lowering mechanism of an accumulator, Comprising: It is the figure which showed the state which the base part raised. It is a figure for demonstrating the raising / lowering mechanism of an accumulator, Comprising: It is the figure which showed the state which the base part fell.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

−Configuration−
First, with reference to FIGS. 1-4, the structure of the winding apparatus 100 by this embodiment is demonstrated.

  The winding device 100 is configured to wind the belt-like film 150 supplied from the upstream side. Specifically, the winding device 100 includes a winding core 10, an accumulator device 20, and a conveyance roller 30 as shown in FIGS. 1 and 2.

  The winding core 10 is provided to wind up the film 150 supplied from the upstream side. The core 10 is configured to be driven to rotate, and the film 150 is pressed by the touch roller 11. Further, the core 10 is detachably attached to, for example, a turret mechanism (not shown). And the winding core 10 which was winding up in the state which stopped winding of the film 150 with the winding core 10 can be replaced | exchanged for the new winding core 10. FIG.

  The accumulator 20 is disposed on the upstream side of the core 10 and is provided for temporarily storing the film 150 when the core 10 is replaced. Thereby, it is possible to replace the core 10 without stopping the conveyance of the film 150 supplied from the upstream side. The accumulator 20 stores or discharges the film 150 by changing the transport path length of the film 150.

  The accumulator 20 includes guide rollers 21a and 21b and a roller 22 disposed therebetween. The guide rollers 21a and 21b and the roller 22 are configured to be driven and rotated, and a film 150 is wound thereon.

  The guide roller 21 a is disposed between the core 10 and the roller 22, and the guide roller 21 b is disposed between the transport roller 30 and the roller 22. The guide rollers 21a and 21b are fixedly arranged at predetermined positions.

  The roller 22 is provided so as to be able to move up and down in the vertical direction, and is provided to change the conveyance path length between the guide rollers 21a and 21b. The roller 22 is disposed below the guide rollers 21 a and 21 b, and the film 150 is in contact with the lower half of the roller 22.

  The accumulator 20 includes a link mechanism 23 that supports the end of the roller 22 in the axial direction, a base portion 24 (see FIG. 3) on which the link mechanism 23 is provided, and an elevating mechanism 25 that raises and lowers the base portion 24 (see FIG. 3). 3). The link mechanism 23, the base portion 24, and the elevating mechanism 25 are provided at both ends of the roller 22 in the axial direction. That is, the pair of link mechanisms 23, the base portion 24, and the lifting mechanism 25 are arranged so as to face each other with the roller 22 interposed therebetween. In FIG. 1 and FIG. 2, only one of the pair of link mechanisms 23 is shown and the base portion 24 and the elevating mechanism 25 are not shown for ease of viewing.

  The link mechanism 23 is configured to support the roller 22 in a swingable manner with respect to the base portion 24, and is provided to cause the roller 22 to function as a dancer roller. The link mechanism 23 includes arms 23 a and 23 b provided on the base portion 24 and a rod 23 c that connects the arms 23 a and 23 b.

  The arm 23a is rotatably provided about the rotation axis C1, and is configured to rotatably support the end portion of the roller 22. The rotation shaft C1 and the roller 22 are disposed at substantially the same height, and the roller 22 supported by the arm 23a can swing substantially in the vertical direction.

  The arm 23b is disposed above the arm 23a and is provided so as to be rotatable about the rotation axis C2. The arm 23b is provided with a balance weight 26 and a pressurizing device 27. The balance weight 26 and the pressure device 27 may be provided on both of the pair of arms 23b, or may be provided on only one of the pair of arms 23b.

  The balance weight 26 is provided to cancel the load on the roller 22. That is, the balance weight 26 is provided in order to suppress the tension from being applied to the film 150 due to the load of the roller 22. The balance weight 26 is disposed on the side opposite to the side to which the rod 23c is connected with respect to the rotation axis C2.

  The pressure device 27 is an air cylinder, for example, and is provided to apply tension to the film 150 by the roller 22. The pressurizing device 27 is disposed on the side where the rod 23c is connected to the rotation axis C2. The output of the pressure device 27 is transmitted to the roller 22 via the arm 23b, the rod 23c, and the arm 23a, and tension is applied to the film 150 by the roller 22.

  A connecting member 28 that connects the pair of arms 23b is provided between the pair of arms 23b. As a result, the pair of link mechanisms 23 are interlocked in a synchronized state. The connecting member 28 is disposed at a position corresponding to the film 150 in the width direction of the film 150 and is disposed above the position corresponding to the roller 22. For this reason, the connecting member 28 is disposed so as to be sandwiched between the film 150 between the guide roller 21 a and the roller 22 and the film 150 between the guide roller 21 b and the roller 22.

  The base portion 24 supports the roller 22 via the link mechanism 23 and is provided so as to be vertically movable. The transport path length of the film 150 is changed by raising and lowering the base portion 24.

  As shown in FIGS. 3 and 4, the elevating mechanism 25 includes a shaft 25a that supports the base portion 24, and a rotating member 25b and a motor 25c for elevating and lowering the shaft 25a in the vertical direction.

  A base portion 24 is provided at the lower end of the shaft 25a. A spiral groove (not shown) is formed on the outer peripheral surface of the shaft 25a. The rotating member 25b is fixedly disposed at a predetermined position inside the side frame 40, and is rotated by the motor 25c at that position. The rotating member 25b has an insertion hole 251b into which the shaft 25a is inserted. A spiral groove (not shown) is formed on the inner peripheral surface of the insertion hole 251b, and the inner peripheral surface of the insertion hole 251b and the outer peripheral surface of the shaft 25a are screwed together. Thereby, when the rotating member 25b is rotated by the motor 25c, the shaft 25a is moved up and down in the vertical direction.

  As shown in FIGS. 1 and 2, the conveying roller 30 is disposed on the upstream side of the accumulator device 20 and is configured to rotate. A film 150 is pressed against the conveying roller 30 by a pinch roller 31. The transport roller 30 is configured to send the film 150 supplied from the upstream side to the core 10 via the accumulator 20.

-Operation-
Next, the operation of the winding device 100 according to the present embodiment will be described with reference to FIGS. 1 and 2.

  First, as shown in FIG. 1, the film 150 is supplied to the winding device 100 from the upstream side. At the time of steady operation, the film 150 is sent to the core 10 by the conveyance roller 30 via the accumulator 20 and is taken up by the core 10. The transport roller 30 and the core 10 are driven and rotated.

  Here, a predetermined tension is applied to the film 150 by the pressure device 27 via the roller 22. The rotational speed of the winding core 10 is set according to the rotational speed of the transport roller 30 and is feedback-controlled according to the position of the roller 22. Specifically, when an input / output speed difference (difference between the surface speed of the conveying roller 30 and the surface speed of the winding diameter wound around the core 10) occurs, and the roller 22 is displaced from a predetermined position, The rotational speed of the core 10 is controlled so as to cancel the displacement of the roller 22. Thereby, the roller 22 is maintained at a substantially predetermined position, and the tension applied to the film 150 by the roller 22 can be kept constant.

  Next, when the core 10 is replaced, the winding of the film 150 by the core 10 is stopped. As shown in FIG. 2, the roller 150 of the accumulator 20 moves downward, so that the film 150 supplied from the upstream side is stored in the accumulator 20. Thereby, even if winding of the film 150 by the winding core 10 is stopped, it is possible to keep the conveyance speed of the film 150 supplied from the upstream side constant. The downward moving speed of the roller 22 (base portion 24) is set based on, for example, the rotational speed of the transport roller 30, and is corrected according to the position of the roller 22. Thus, the film 150 is stored by the length of the transport path being increased by the length of the supplied film 150, and the tension applied to the film 150 is kept constant.

  Thereafter, when the winding core 10 that has been wound up is replaced with a new winding core 10, the film 150 is wound up by the new winding core 10. In addition, after resumption of winding with the new core 10, the rotational speed (winding speed) of the core 10 is set higher than in the steady operation, so that the film 150 stored in the accumulator 20 is stored. Released. At this time, in the accumulator 20, the roller 22 is moved upward.

  Then, when all the stored film 150 is released, the operation is shifted to the steady operation. That is, the rotation speed of the new core 10 is set to a value obtained by correcting the rotation speed of the transport roller 30 at the position of the roller 22.

-Effect-
In the present embodiment, as described above, it is not necessary to separately provide a dancer roller by causing the accumulation roller 22 to function as a dancer roller. As a result, the conveyance path of the film 150 is shortened compared to the case where a dedicated dancer roller is provided, so that the tension control of the film 150 is stabilized and the number of rollers is reduced, thereby reducing mechanical loss. Can do.

  In the present embodiment, the connecting member 28 for connecting the pair of link mechanisms 23 is disposed above the position corresponding to the roller 22, so that the film 150 is transferred to each roller. In addition, since it is not necessary to pass the film 150 between the roller 22 and the connecting member 28, it is possible to facilitate the transfer work.

  In this embodiment, since the shaft 25a moves up and down together with the roller 22 by providing the base portion 24 at the lower end of the shaft 25a that moves up and down in the vertical direction, the shaft 25a is obstructed when the film 150 is bridged over the roller 22. This makes it easier to carry over. On the other hand, when the roller is moved up and down along the fixed rail, there is a disadvantage that the rail tends to become an obstacle when the film is placed on the roller.

  In the present embodiment, by providing the balance weight 26, it is possible to suppress the roller 22 from swinging due to inertia when the roller 22 moves up and down. For this reason, it can suppress that the tension applied to the film 150 fluctuates.

-Other embodiments-
In addition, embodiment disclosed this time is an illustration in all the points, Comprising: It does not become a basis of limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the scope of claims. Further, the technical scope of the present invention includes all modifications within the meaning and scope equivalent to the scope of the claims.

  For example, in the present embodiment, the example in which the present invention is applied to the accumulator 20 that temporarily stores the film 150 when the core 10 is replaced has been described. The present invention may also be applied to an accumulator that discharges to the outside. Further, when the film is intermittently conveyed in the conveyance path, the present invention may be applied to an accumulator installed on the upstream side or the downstream side.

  Further, in the present embodiment, an example in which only one roller 22 that moves up and down is provided in the accumulator device 20 is shown, but the present invention is not limited thereto, and a plurality of rollers that move up and down may be provided in the accumulator device.

  In this embodiment, an example in which the balance weight 26 is provided to cancel the load of the roller 22 is shown. However, the present invention is not limited to this, and a pressure device such as an air cylinder (not shown) is used to cancel the load of the roller. May be provided.

  Further, in the present embodiment, the example in which the connecting member 28 that connects the pair of arms 23b is shown, but the present invention is not limited thereto, and a connecting member (not shown) that connects the pair of rods 23c is provided. Good.

20 accumulator 22 roller 23 link mechanism 24 base portion 25a shaft 28 connecting member 150 film

Claims (1)

Comprising a pair of guide rollers, and a roller disposed between the pair of guide rollers, the guide rollers and the roller is wound the film, the conveyance of the film by the roller is moved An accumulator that stores or releases the film by changing a path length,
A pair of link mechanisms that respectively support both ends of the roller in the axial direction;
A base portion provided with the link mechanism;
The base portion is provided at the lower end, and includes a shaft that can be raised and lowered in the vertical direction,
The transport path length of the film is changed by moving the roller up and down between the pair of guide rollers by raising and lowering the shaft,
The link mechanism is configured to swingably support the roller with respect to the base portion,
The roller is configured to apply tension to the prior SL film,
A connecting member for connecting the pair of link mechanisms is provided between the pair of link mechanisms,
The accumulator is characterized in that the connecting member is disposed above the roller and disposed between the pair of guide rollers .

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