JP4583282B2 - Touch roll unit and touch roll device - Google Patents

Description

  The present invention relates to a touch roll unit and a touch roll device that are brought into pressure contact with an outer peripheral surface of a wound product being wound.

  Conventionally, when winding a wide and long winding material around a winding shaft, in order to prevent the winding state from becoming unstable due to air entrainment, such as winding deviation, the winding material being wound A touch roll is pressed against the outer peripheral surface of the air to prevent air entrainment.

  As this type of touch roll, for example, it is described in Patent Document 1 (in particular, see FIG. 2). In the touch roll device of Patent Document 1, a plurality of touch rolls (12) are arranged in the width direction of a web (W) that is a wound material, and these touch rolls (12) are respectively associated with cylinders (15). ) To press contact the outer peripheral surface of the web (W). The reference numerals in parentheses are those used in Patent Document 1. The same applies to the following items.

  However, in the touch roll device of Patent Document 1, one cylinder (15) is provided for each touch roll (12), and the pressure contact force of the touch roll (12) corresponding to each cylinder (15). Therefore, the plurality of cylinders (15) must be controlled at the same time, and the control of the pressure contact force must be complicated.

  Further, according to the touch roll device of Patent Document 1, both ends of the touch roll (12) are supported by the left and right dancer levers (14), and a plurality of these are arranged in the width direction of the web (W). Therefore, two dancer levers are required for one touch roll, which not only complicates the device structure but also requires a large installation space for the device.

JP 59-138549 A

  The present invention has been made to solve the above-described problems, and the object of the present invention is to reliably press the outer peripheral surface of the wound material with a compact and simple device structure without requiring complicated control. An object of the present invention is to provide a touch roll unit and a touch roll device that are suitable for preventing air entrainment during winding.

In order to achieve the above object, the touch roll unit of the present invention is a touch roll unit that is brought into pressure contact with the outer peripheral surface of the wound material being wound, and the touch roll unit is eccentric with respect to the axis of the roll shaft. An eccentric holder that can be eccentrically rotated by a predetermined amount around the roll shaft that is rotatably inserted into the eccentric hole, a touch roll that is rotatably attached to an outer peripheral surface of the eccentric holder, and the eccentric Biasing means for applying a biasing force to the holder, and the eccentric holder is eccentrically rotated by a predetermined amount by a reaction force when the touch roll is pressed against the outer peripheral surface of the wound article, and the biasing means Is characterized in that a biasing force for eccentrically rotating the eccentric holder in a direction opposite to a predetermined amount eccentric rotation direction of the eccentric holder is applied to the eccentric holder .

  In the touch roll unit of the present invention, the eccentric holder rotates eccentrically by a predetermined amount due to a reaction force when the touch roll is pressed against the outer peripheral surface of the wound object, and the biasing means is configured to respond to the eccentric rotation amount. The biasing force is applied to the eccentric holder, and the outer peripheral surface of the touch roll is pressed against the outer peripheral surface of the wound article by the biasing force.

  In the touch roll unit of the present invention, the roll shaft may be detachable from an eccentric hole of the eccentric holder.

  In the touch roll unit of the present invention, the urging means may be a coil spring.

  In the touch roll unit of the present invention, the touch roll may be made of metal.

  In order to achieve the above object, the touch roll device of the present invention is characterized in that it has a plurality of touch roll units mounted on a roll shaft parallel to the winding shaft of the wound product.

  In the touch roll device of the present invention, the roll shaft may be an air shaft.

  In the present invention, by adopting the eccentric holder, the touch roll, and the biasing means having the structure as described above, the eccentric holder is eccentric by a predetermined amount by the reaction force when the touch roll is pressed against the outer peripheral surface of the wound material. The urging means applies an urging force to the eccentric holder so as to suppress the eccentric rotation according to the amount of eccentric rotation, and the outer peripheral surface of the touch roll is pressed against the outer peripheral surface of the wound material by the urging force. Therefore, since the touch roll is pressed against the wound material by the biasing force of the biasing means, it is not necessary to control the press-contact force of the touch roll using a cylinder or the like, and the winding is reliably performed without requiring complicated control. A touch roll can be brought into pressure contact with an object, and therefore, the amount of air entrained during winding can be reduced, and a good wound object that is less likely to cause winding misalignment or the like can be provided.

  In addition, according to the present invention, since a structure in which a plurality of touch roll units are mounted on one roll shaft is adopted, the plurality of touch roll units can be supported by a structure in which both ends of the roll shaft are supported by dancer levers. In addition, since two dancer levers are sufficient for a plurality of touch roll units, the structure of the apparatus is simplified and the entire apparatus can be made compact.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  1 is a front view of a touch roll device according to an embodiment of the present invention, FIG. 2 is a right side view of the touch roll device, FIG. 3 is a cross-sectional view of a touch roll unit according to an embodiment of the present invention, and FIG. It is a right view of the touch roll unit which is one Embodiment of this invention.

  As shown in FIG. 1, the touch roll device 1 of the present embodiment has a plurality of touch roll units 2A, 2B, 2C..., And these touch roll units 2A, 2B, 2C. Are mounted on one roll shaft 3 parallel to the take-up shaft 7 and arranged side by side in the width direction.

  As shown in FIG. 2, the roll shaft 3 is attached to the tip of a pair of left and right dancer levers 5 that can swing around the dancer shaft 4, and the dancer levers 5 are in a predetermined angular range by actuator means 8 such as a cylinder. It is controlled to oscillate within.

  Each of the touch roll units 2A, 2B, and 2C has the same structure, and includes an eccentric holder 9, a touch roll 10, and an urging means 11 described below.

  As shown in FIGS. 3 and 4, the eccentric holder 9 has a circular outer shape and has an eccentric hole 12 that is eccentric with respect to the axis of the roll shaft 3, and the roll shaft 3 is provided in the eccentric hole 12. It is structured to be inserted in a rotatable manner. The eccentric holder 9 can be made of a metal such as aluminum, iron, or stainless steel, or a resin such as acrylic resin, acrylonitrile / butadiene / styrene resin, or vinyl chloride resin.

  A slide bearing 13 is provided between the eccentric hole 12 and the roll shaft 3. With this slide bearing 13, the eccentric holder 9 can be eccentrically rotated by a predetermined amount about the roll shaft 3, and the roll shaft 3 is eccentric. The hole 12 can be inserted and removed freely. When such a configuration is adopted, for example, a known air shaft can be used as the roll shaft 3 in order to fix and lock the roll shaft 3 and the slide bearing 13.

  The touch roll 10 is made of a cylindrical metal (for example, aluminum, iron, stainless steel, etc.) having a slightly larger diameter than the eccentric holder 9 and is rotatably attached to the outer peripheral surface of the eccentric holder 9 via a rolling bearing 14. Yes. The touch roll 10 may be made of rubber (eg, urethane, polychloroprene, silicone), resin (eg, acrylic resin, acrylonitrile / butadiene / styrene resin, vinyl chloride resin) or the like.

  As the sliding bearing 13 and the rolling bearing 14, for example, an oilless metal (Oiles Kogyo Co., Ltd., registered trademark) or a ball bearing can be employed.

  The biasing means 11 includes a coil spring 15 disposed on the end face of the eccentric holder 9, and the coil spring 15 as the biasing means 11 applies a force in a direction to suppress the eccentric rotation of the eccentric holder 9. It functions to be applied to the eccentric holder 9. In order to realize this function, in the touch roll units 2A, 2B, and 2C of the present embodiment, the coil spring 15 is hung around the outer periphery half of the roll shaft 3, and in this state, one end 15a of the coil spring 15 is moved to the roll shaft. 3, and the other end 15 b of the coil spring 15 is integrally attached and fixed to the end surface of the eccentric holder 9 by a locking member 17 such as a screw. The key portion 16 is attached to the key groove 18 of the roll shaft 3. A cover 19 is attached on the coil spring 15. In addition, as this kind of biasing means 11, instead of the coil spring 15, for example, an elastic body such as a plate spring, a torsion spring, or rubber may be used.

  Next, the operation of the touch roll device of the present embodiment configured as described above will be described with reference to FIGS.

  In the touch roll device 1 of the present embodiment shown in FIG. 1, first, as shown in FIG. 2, the dancer lever 5 swings a predetermined amount about the dancer shaft 4 in the direction of arrow A in the figure, thereby 3 approaches the winding shaft 7, and the outer peripheral surface of the touch roll 10 contacts the outer peripheral surface of the wound product 6. At this time, as shown in FIG. 4, the eccentric holder 9 has the key portion 16 tilted within about 25 ° as viewed from the line segment connecting the axis P1 of the roll shaft 3 and the axis P2 of the winding shaft 7. It is preferable to be in a state of being set to a position.

  In the set state of the eccentric holder 9 as described above, the dancer lever 5 further swings a predetermined amount in the same direction, so that the roll shaft 3 approaches the winding shaft 7 and the touch roll 10 is pressed against the winding material 6. It is done. The eccentric holder 9 is eccentrically rotated by a predetermined amount in the direction of arrow B in FIG.

  At this time, since one end 15a of the coil spring 15 is stopped without moving from the position of the key portion 16, the coil spring 15 has its one end 15a as a fixed base point, and the other end 15b side is subjected to eccentric rotation of the eccentric holder 9. Accordingly, the biasing force (spring restoring force) in a direction to suppress the eccentric rotation of the eccentric holder 9 is applied from the coil spring 15 to the eccentric holder 9 and the coil spring 15 is attached. The touch roll 10 comes into pressure contact with the roll 6 by the force. The eccentric holder 9 tends to rotate eccentrically in the direction opposite to the arrow B in FIG. Such eccentric rotation in the reverse direction is possible until the stopper 20 provided on the end surface of the eccentric holder 9 abuts against the key portion 16.

  The winding thickness of the wound product 6 gradually increases as the winding time elapses, but the touch roll 10 operates to gradually escape from the winding shaft 7 in conjunction with the increase in the winding thickness. Therefore, when the increase amount of each winding thickness is equal to the escape amount of each roll shaft 3, the current eccentric rotation position of the eccentric holder 9 is maintained. The escape operation of the touch roll 10 is due to the swing control of the dancer lever 5 in the direction opposite to the direction indicated by the arrow a in FIG.

  By the way, it is inevitable that the thickness of the plurality of wound articles 6 varies in the width direction. For this reason, as shown in FIG. 5, when the same thing is wound up simultaneously by one winding shaft 7, a difference arises in the winding thickness of each winding thing 6. FIG. When such a difference in winding thickness occurs, in the touch roll device 1 of the present embodiment, the eccentric holder 9 rotates eccentrically by a predetermined amount according to the winding thickness, and the touch roll 10 is constantly biased by the coil spring 15. The pressure comes into contact with the roll 6.

  For example, in FIG. 5, the winding thickness of the wound product 6 </ b> B located at the center is the smallest in the drawing, and the winding thickness of the wound product 6 </ b> C located on the right side is the largest. The operating state of the touch roll unit 2B corresponding to the wound product 6B with the smallest winding thickness is shown in FIG. 4, and the operating state of the touch roll unit 2C corresponding to the wound product 6C with the largest winding thickness is It is shown in FIG. FIG. 4 shows a state where the coil spring 15 is pulled back by the urging force of the coil spring 15 and the eccentric holder 9 is eccentrically rotated in the direction opposite to the arrow B. FIG. 6 shows the case where the coil spring 15 is stretched by the eccentric rotation of the eccentric holder 9 in the direction indicated by the arrow B in FIG. 4 and the urging force (spring restoring force) of the coil spring 15 acts on the eccentric holder 9. This shows the state. As can be seen from the comparison of these figures, when the winding thickness is thin, the eccentric holder 9 is automatically rotated by a predetermined amount counterclockwise by the biasing force of the coil spring 15, so that the touch roll 10 The outer peripheral surface can be surely pressed against the outer peripheral surface of the wound article 6 at all times.

  As described above, in the touch roll device 1 according to the present embodiment, the eccentric holder 9 is eccentrically rotated by a predetermined amount by the reaction force when the touch roll 10 is pressed against the outer peripheral surface of the roll 6, and the eccentric rotation is performed. According to the amount, the coil spring 15 applies an urging force in a direction to suppress the eccentric rotation to the eccentric holder 9, and the outer peripheral surface of the touch roll 10 is pressed against the outer peripheral surface of the wound article 6 by the urging force. did. For this reason, since the touch roll 10 is pressed against the roll 6 with an urging force, it is not necessary to control the pressure contact force of the touch roll 10 by using a cylinder or the like, and the roll 6 can be reliably secured without complicated control. The touch roll 10 can be brought into pressure contact with each other, and the amount of air entrained during winding is reduced, so that a good wound product is obtained in which winding misalignment and the like are unlikely to occur.

  Moreover, since the touch roll apparatus 1 of this embodiment is a structure where the touch roll 10 press-contacts with the winding material 6 with the urging | biasing force of the coil spring 15, it changes and adjusts the urging | biasing force of the coil spring 15 suitably as needed. Accordingly, the pressure contact force of the touch roll 10 can be freely adjusted.

  In the above embodiment, as shown in FIG. 1, a configuration in which a plurality of touch roll units 2 </ b> A, 2 </ b> B, and 2 </ b> C correspond one-to-one with a plurality of rolls 6, 6, 6 is employed. In addition, as shown in FIG. 7, a plurality of touch roll units 2 </ b> A, 2 </ b> B, and 2 </ b> C can be configured to be set corresponding to one wound product 6. In this case, a plurality of touch roll units 2A, 2B, 2C,... Are arranged close to each other in the width direction, and the touch roll 10 constituting each touch roll unit 2A, 2B, 2C,. It is good to press-contact to 6. If comprised in this way, since the clearance gap between the two adjacent touch rolls 10 will become small, and the part which the touch roll 10 does not press-contact will decrease in the winding material 6, the amount of air entrainment in winding will reduce, and winding A good wound material that is less likely to be displaced can be obtained.

The front view of the touch roll apparatus which is one Embodiment of this invention. The right view of the touch roll apparatus of FIG. 1 is a cross-sectional view of a touch roll unit that is an embodiment of the present invention. The right view of the touch roll unit which is one Embodiment of this invention. Operation | movement explanatory drawing of the touch roll apparatus which is one Embodiment of this invention. Operation | movement explanatory drawing of the touch roll unit which is one Embodiment of this invention. Explanatory drawing of other embodiment of the touch roll apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Touch roll apparatus 2A, 2B, 2C Touch roll unit 3 Roll axis | shaft 4 Dancer axis | shaft 5 Dancer lever 6 Winding thing 7 Winding axis | shaft 8 Actuator means 9 Eccentric holder 10 Touch roll 11 Energizing means 12 Eccentric hole 13 Slide bearing 14 Rolling Bearing 15 Coil spring 15a Coil spring one end 15b Coil spring other end 16 Key part 17 Locking member 18 Key groove 19 Cover 20 Stopper P1 Roll shaft axis P2 Winding shaft axis P3 Eccentric holder shaft center

Claims (7)

A touch roll unit that is brought into pressure contact with the outer peripheral surface of the wound material being wound,
The touch roll unit is
An eccentric holder that has an eccentric hole that is eccentric with respect to the axis of the roll shaft, and that can be eccentrically rotated by a predetermined amount around the roll shaft that is rotatably inserted into the eccentric hole;
A touch roll rotatably attached to the outer peripheral surface of the eccentric holder;
Biasing means for imparting a biasing force to the eccentric holder,
The eccentric holder rotates eccentrically by a predetermined amount by a reaction force when the touch roll is pressed against the outer peripheral surface of the wound material,
The touch roll unit according to claim 1, wherein the biasing unit applies a biasing force to the eccentric holder so as to eccentrically rotate the eccentric holder in a direction opposite to a predetermined amount eccentric rotation direction of the eccentric holder . In the touch roll unit, the eccentric holder rotates eccentrically by a predetermined amount due to a reaction force when the touch roll is pressed against the outer peripheral surface of the wound material, and the biasing means moves the biasing force in accordance with the eccentric rotation amount. The touch roll unit according to claim 1, wherein the outer peripheral surface of the touch roll is pressed against the outer peripheral surface of the wound article by the biasing force. The touch roll unit according to claim 1, wherein the roll shaft is detachable from the eccentric hole of the eccentric holder. The touch roll unit according to claim 1, wherein the urging unit includes a coil spring. The touch roll unit according to any one of claims 1 to 4, wherein the touch roll is made of metal.   A touch roll device comprising the touch roll unit according to claim 1, wherein a plurality of the roll rolls are mounted on a roll shaft parallel to a winding shaft of the wound product. The touch roll device according to claim 6, wherein the roll shaft is an air shaft.

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