JP2008214069A - Roll body conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roll body conveying device capable of independently elevating/lowering two core receiving parts for receiving a roll body on a supporting base by a lifter mechanism of a small space. <P>SOLUTION: The roll body conveying device delivers a roll body having a core on its center and projecting parts with the core being projected from both ends of the roll body between a holding means of the roll body and itself. The roll body conveying device has two core receiving parts for receiving the projecting part on both sides of the roll body on a supporting base. In the roll body conveying device, the supporting base is elevated/lowered by an electric lifter mechanism. The two core receiving parts are elevated/lowered on the supporting base by a small stroke lifter mechanism employing the wedge action. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting a roll body such as a raw roll, for example, a roll suitable for receiving a raw roll from a storage location of the raw roll and supplying it to a production machine such as a film coater or a laminator. The present invention relates to a body conveyance device.

  When supplying a raw roll to a production machine (hereinafter referred to as a production machine) such as a film coater or a laminator, an unmanned traveling carriage, particularly an AGV (Automated Guided Vehicle) is used as a conveyance device. . The AGV receives the raw roll from the storage location of the raw roll, travels on a track or a trackless track, and transfers it to the chucking device of the production machine.

  An example of the above AGV will be described with reference to FIG. An original fabric roll 200 to be conveyed with this type of AGV 100 has a hollow core 210 at the center of the roll body, and the core 210 has projecting portions 210-1 projecting from both ends of the roll body.

  The AGV 100 includes a core receiving block 110 for holding the original fabric roll 200 and a hydraulic lifter mechanism 120 for raising and lowering the core receiving block 110 when the original fabric roll 200 is delivered. It has a function of having a driven wheel and automatically running on a trackless running surface. The core receiving block 110 has two core receiving portions 110-1 for receiving the protruding portions 210-1 on both sides of the core 210 in the raw fabric roll 200.

  An operation when receiving the fabric roll 200 held by the holding unit of the chucking device 300 on both sides will be described.

  The AGV 100 can be stopped in a region almost immediately below the original roll 200 by an automatic traveling function.

  FIG. 3A shows a state in which the two core receiving portions 110-1 are aligned so as to be almost directly below the two projecting portions 210-1 of the core 210 as described above. From this state, the core receiving block 110 is driven to rise by the lifter mechanism 120. This increase is performed in a state where the hydraulic pressure is low. Although not shown, the hydraulic circuit of the lifter mechanism 120 is provided with a pressure switch that is turned “ON” when the core receiving portion 110-1 contacts the protruding portion 210-1 and receives a reaction force. When the pressure switch is turned “ON”, the ascending drive of the core receiving block 110 is stopped (FIG. 3b). Subsequently, the hydraulic pressure of the lifter mechanism 120 is switched from a low pressure to a high pressure, and the core receiving block 110 can receive the raw roll 200. When the control device on the side of the chucking device 300 is notified that the original roll 200 can be received, the holding of the original roll 200 by the chucking device 300 is released, and the original roll 200 is received by the core receiving unit. Passed to block 110. Subsequently, as shown in FIG. 3C, the core receiving block 110 is driven by the lifter mechanism 120 so as to be lowered to a predetermined height position.

  As a technology related to this type of transport device, for example, Patent Document 1 discloses a technology that realizes a control function that matches the center of the roll base paper loaded in the mill roll stand in the width direction with the center of the mill roll stand. ing. Patent Document 2 discloses a technique that simplifies the configuration of the position detection device for the coil conveyance carriage and that can accurately and arbitrarily detect the position of the coil conveyance carriage even when the movement distance is long. Has been.

  By the way, when the AGV 100 receives the original fabric roll 200 held by the chucking device 300 as described above, if the core 210 of the original fabric roll 200 is not parallel to the floor surface, the two core receiving portions 110- 1, the protrusions 210-1 on both sides of the core 210 may not be received well. The same applies to the case where the original fabric roll 200 mounted on the AGV 100 is transferred to the chucking device 300.

  As a solution to the above-described problems, for example, as shown in FIG. 4, a metal plate 400 (for example, SUS) that is leveled out in a region where the wheels of the AGV 100 are to be located, where the roll of the raw fabric roll 200 is to be placed. It is conceivable that the two core receiving portions 110-1 of the AGV 100 are maintained horizontal. However, this is not a preferable solution because the level cannot be maintained due to wear of the wheels or wear of the metal plate.

  On the other hand, as shown in FIG. 5, it is conceivable to adopt a so-called double lifter system in which the two core receiving portions 110-1 are moved up and down independently by separate lifter mechanisms 120-1. However, if the two lifter mechanisms are mounted in a normal well-known configuration, the cost is increased and the installation space is large, so that the AGV 100 is increased, and restrictions on the production machine side are increased. Further, in the case of the double lifter system, there is a problem that when the lifter mechanism on one side breaks down and the roll roll is dropped and damages the roll material, it also poses a danger to surrounding workers.

JP 2001-39592 A JP 2002-66631 A

  An object of the present invention is to provide a roll body conveying apparatus in which two core receiving portions can be moved up and down independently by a small space lifter mechanism on a support base.

  A roll body conveying apparatus according to the present invention transfers a roll body having a core in the center, the core having a protruding portion protruding from both ends of the roll body, to and from the holding means of the roll body. It is a roll body conveying apparatus for performing, Comprising: On the support stand, the two core receiving parts for receiving the said protrusion part of the both sides of the said roll body are provided. In this roll body conveying apparatus, the support table can be raised and lowered by an electric lifter mechanism, and the two core receiving parts can be raised and lowered on the support table by a small stroke lifter mechanism by the action of a wedge, respectively. It is comprised by these.

  The small stroke lifter mechanism includes a first mechanism that converts a rotational motion by a motor into a reciprocating rectilinear motion, and a second mechanism that converts the reciprocating rectilinear motion into a lifting motion by the action of the wedge. In this case, the first mechanism abuts on the eccentric cam that is rotationally driven by the motor provided on the support base and the outer periphery of the eccentric cam, and reciprocates by the eccentric rotational movement of the eccentric cam. It is preferable to include a roller block having two rollers that move linearly and a horizontal guide member that guides the reciprocating linear movement of the roller block on the support base. On the other hand, the second mechanism has a tapered surface inclined with respect to the reciprocating linear movement direction of the first mechanism, and one of the two rollers is in contact with the tapered surface, and the core receiving portion. A wedge-shaped taper block attached to the support base, a vertical guide member provided on the support base so as to extend upward, and a lift block attached to the core receiving portion and guided to rise and fall by the vertical guide member. It is preferable.

  In the roll body conveying device according to the present invention, the two core receiving portions that receive the protruding portions on both sides of the core of the roll body can be moved up and down by a minute stroke so that the core and the floor surface of the roll body are parallelized (leveled out). Is no longer necessary. Even if one small stroke lifter mechanism breaks down due to a failure, the roll body does not tilt greatly per small stroke and does not fall. The small stroke lifter mechanism can be realized in a small space and requires less space restrictions on the production machine side.

  With reference to FIG. 1, FIG. 2, embodiment of the roll conveyance apparatus by this invention is described.

  FIG. 1 is a front view showing an embodiment in which the present invention is applied to AGV. In the present embodiment, as described in FIG. 3, the raw roll 200 that is a conveyance target of the AGV 1 has a hollow core 210 at the center of the roll body, and the core 210 protrudes from both ends of the roll body. -1.

  The AGV 1 includes a core receiving block 10 for holding the original fabric roll 200 and an electric lifter mechanism 20 for raising and lowering the core receiving block 10 when the original fabric roll 200 is delivered. The AGV 1 also has a function of having a steered wheel and a driven wheel to automatically travel on a trackless traveling surface. The core receiving block 10 has two core receiving portions 10-1 installed on the support base 10-2 for receiving the protruding portions 210-1 on both sides of the core 210 in the raw fabric roll 200.

  The AGV 1 has a feature in the core receiving block 10 as well as an electric lifter mechanism 20 for raising and lowering the core receiving block 10. This will be described below with reference to FIG.

  FIG. 2 is an enlarged view of one core receiving portion 10-1 in the core receiving block 10 and the surrounding configuration viewed from the side. The core receiving portion 10-1 is configured to be movable up and down by a minute distance on the support base 10-2 by a small stroke lifter mechanism by the action of a wedge. The ascending / descending distance is very small when the core receiving part 10-1 is raised or lowered when the two protruding parts 210-1 are not in a horizontal state and the height position of the core receiving part 10-1 is finely adjusted. This is because the unit 210-1 is touched.

  In the present embodiment, the small stroke lifter mechanism includes a first mechanism 10-10 that converts a rotational motion by a motor (not shown) installed on the support base 10-2 into a reciprocating linear motion, and a wedge for the reciprocating linear motion. And a second mechanism 10-20 that converts to a lifting motion by the action of

  The first mechanism 10-10 includes an eccentric cam 10-11 that is rotationally driven by the motor, and abuts the outer periphery of the eccentric cam 10-11 at two locations in the diametrical direction. The roller block 10-12 having two rollers R1 and R2 that reciprocate linearly by the eccentric rotational movement of the roller, and the reciprocating rectilinear movement of the roller block 10-12 provided on the support 10-2 are two horizontal slides. And a horizontal guide member 10-14 guided through the block 10-13.

  On the other hand, the second mechanism 10-20 includes a taper block 10-21 that is movable only in the vertical direction, a lifting block 10-22, and a vertical guide member 10-23. The taper block 10-21 has a tapered surface 10-21a inclined with respect to the reciprocating linear motion direction of the first mechanism 10-10, and one of the two rollers R1 and R2 on the tapered surface 10-21a, here, The roller R2 is brought into contact with the core receiving portion 10-1 and is attached to the core receiving portion 10-1 via an elevating plate 10-24. The raising / lowering block 10-22 is provided in the raising / lowering board 10-24 so that it may extend below, and has the raising / lowering slide block 10-25 which raises / lowers integrally with this. The vertical guide member 10-23 is provided on the support base 10-2 so as to extend upward, and has an elevating guide block 10-26 that guides elevating of the elevating slide block 10-25.

  The core receiving portion 10-1 also has an upper end that makes it easy to receive the protruding portion 210-1 from below even when the diameter of the protruding portion 210-1 is different, and to easily position the protruding portion 210-1. In order to do so, an inverted triangular (or curved) receiving surface 10-1a is formed.

  The small stroke lifter mechanism operates as follows.

  1) The eccentric cam 10-11 is rotated by a motor.

  2) As the eccentric cam 10-11 rotates, the two rollers R1 and R2 move in the same direction, and the roller block 10-12 moves.

  3) When the roller block 10-12 moves rightward in FIG. 2, the taper block 10-21 rises by the roller R2 of the roller block 10-12. FIG. 2 shows a state in which the roller block 10-12 has moved to the rightmost. In this state, the core receiving portion 10-1 is at the highest height position.

  If the core receiving part 10-1 touches the protrusion part 210-1 at the time of the raising, it is necessary to stop a raise. This can be realized, for example, by providing a touch sensor that detects that the protruding portion 210-1 is touched on the core receiving portion 10-1 side.

  When the two core receiving portions 10-1 touch the two projecting portions 210-1, the holding of the original fabric roll 200 is released and passed onto the two core receiving portions 10-1. The load of the original fabric roll 200 is supported by the lifter mechanism 20 (FIG. 1) via the small stroke lifter mechanism and the support 10-2. The web roll 200 is lowered by lowering the support 10-2 with the lifter mechanism 20.

  4) When only the core receiving portion 10-1 is lowered, if the eccentric cam 10-11 is further rotated or rotated in the opposite direction, the two rollers R1 and R2 are moved along with the rotation. The roller block 10-12 returns to the left in FIG. Thereby, the taper block 10-21 descends, and the core receiving part 10-1 also descends.

  As described above, in the AGV 1 according to the present embodiment, the load of the raw fabric roll 200 is received by the single support base 10-2 via the two core receiving portions 10-1 and the small stroke lifter mechanism. The small stroke lifter mechanism converts the pressing force of the roller block 10-12 in the up-and-down direction of the taper block 10-21, and this force conversion has an effect of obtaining a large lifting force with a small pressing force by the action of the wedge. is there. Thereby, the small stroke lifter mechanism acts as a small stroke lifter having a compact configuration.

  Therefore, the AGV 1 according to the present embodiment makes it possible to raise and lower the two core receiving portions 10-1 by a minute stroke, so that the core 210 and the floor surface of the raw roll 200 are not required to be parallel (leveling). Even if one small stroke lifter mechanism breaks down due to a failure, the roll 200 is not greatly inclined per small stroke and does not fall. The small stroke lifter mechanism can be realized in a small space and requires less space restrictions on the production machine side.

  Although the taper block 10-21 can be moved up and down by only one roller R2 using a pneumatic cylinder instead of the eccentric cam 10-11, the installation space becomes larger than the eccentric cam 10-11.

  In the present invention, not only the automatic traveling carriage such as AGV but also the protruding portions on both sides of the core of the roll body are received by the two core receiving portions, and the two core receiving portions can be moved up and down independently. It can be applied to all existing transport carts.

FIG. 1 is a front view for explaining an AGV according to an embodiment of the present invention. FIG. 2 is an enlarged view of the core receiving portion shown in FIG. 1 and a small stroke lifter mechanism that enables the core receiving portion to be lifted up and down as viewed from the side. FIG. 3 is a front view for explaining the operation of the conventional AGV. FIG. 4 is a front view for explaining a conventional method for leveling the two core receiving portions of the AGV and the core of the raw roll. FIG. 5 is a front view for explaining another conventional method for leveling the two core receiving portions of the AGV and the core of the raw roll.

Explanation of symbols

1, 100 AGV
DESCRIPTION OF SYMBOLS 10, 110 Core receiving unit 10-1, 110-1 Core receiving part 10-10 1st mechanism 10-20 2nd mechanism 10-11 Eccentric cam 10-21 Taper block 10-22 Lifting block 20 Electric type Lifter mechanism R1, R2 Roller

Claims (4)

A roll body transport device for transferring a roll body having a core in the center and having a protruding portion in which the core protrudes from both ends of the roll body to and from the holding means of the roll body. In the roll body transport device comprising two core receiving portions for receiving the protruding portions on both sides of the roll body on the support base,
The support base can be moved up and down by an electric lifter mechanism,
Each of the two core receiving portions is configured to be movable up and down on the support base by a small stroke lifter mechanism by the action of a wedge.   The small stroke lifter mechanism includes a first mechanism that converts a rotational motion by a motor into a reciprocating linear motion, and a second mechanism that converts the reciprocating linear motion into a lifting motion by the action of the wedge. The roll body conveying apparatus according to claim 1.   The first mechanism abuts on an eccentric cam that is rotationally driven by the motor provided on the support base and an outer periphery of the eccentric cam, and reciprocates linearly by the eccentric rotational movement of the eccentric cam. The roll body conveying device according to claim 2, comprising: a roller block having two rollers; and a horizontal guide member that guides the reciprocating linear movement of the roller block on the support base.   The second mechanism has a tapered surface inclined with respect to the reciprocating linear movement direction of the first mechanism, and one of the two rollers is in contact with the tapered surface and is attached to the core receiving portion. A wedge-shaped taper block, a vertical guide member provided on the support base so as to extend upward, and a lift block attached to the core receiving portion and guided by the vertical guide member. The roll conveyance apparatus according to claim 2 or 3, wherein

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