JP4388087B2 - Roll body transport device - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting an original roll, for example, a roll suitable for receiving an original roll from a take-up place or a storage place of the original 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 a winding place or a storage place of the raw roll, travels on a track or a trackless track, and transfers it to a chucking device of a 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 protrusions 210-1 protruding 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.

  The operation when receiving the original fabric roll 200 held by 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. Although there may be a position adjustment mechanism that adjusts the two core receiving portions 110-1 so as to be almost directly below the two protruding portions 210-1 of the core 210, detailed description thereof is omitted.

  FIG. 5A shows a state in which the two core receiving portions 110-1 are aligned so as to be almost directly below the two protruding 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. 5b). Subsequently, the hydraulic pressure of the lifter mechanism 120 is switched from low pressure to high pressure, and the core receiving block 110 can receive the raw fabric roll 200. When the control device on the side of the chucking device 300 is notified that the original fabric roll 200 is ready to be received, the holding of the original fabric roll 200 by the chucking device 300 is released, and the original fabric roll 200 is received by the core receiver. Passed to block 110. Subsequently, as shown in FIG. 5C, 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. It is disclosed. 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 cleanliness is required at a production machine site, the hydraulic lifter mechanism as described above is not preferable.

  Further, the set value of the pressure switch needs to be slightly higher than the low pressure set when the lifter mechanism 120 is moved up and down in an unloaded state. In this case, although the pressure is low, the force acting on the object is large. In the unlikely event, the position of the core receiving part 110-1 with respect to the two protruding parts 210-1 is shifted, and the core receiving part 110-1 becomes the original roll. If it hits the 200 roll body, the roll material will be damaged. Of course, the AGV 100 has a function of detecting such an abnormality and stopping the lifter mechanism 120, but the stop is after the core receiving portion 110-1 hits the roll body of the original fabric roll 200, Damage to the roll material is inevitable.

  The following example is given as a cause of the above-described positional deviation.

  FIG. 6 shows an example in which the original roll is received at the winding position of the original roll from the side.

  A chucking device 300 is rotatably provided between the two support frames 600 via an arm 350. When winding the roll material 250, the chucking device 300 holding the core 210 is placed on one side with the two support frames 600 in between, on the right side in FIG. 6, and winds the roll material 250. When the winding operation is completed, the roll 200 after winding is rotated by rotating the arm 350 by 180 degrees so that the chucking device 300 holds the two support frames 600 at the opposite positions. Placed. It can be said that this state is the state of FIG.

  In this case, it is inevitable that the chucking device 300 in the state of FIG. 5A is displaced, that is, the position in the vertical direction or the position of the core 210 in the axial direction. Position shift occurs at -1. In addition, the core 210 has a plurality of types of diameters, and causes a positional deviation in the vertical direction, particularly a positional deviation of the lower end of the protruding portion 210-1.

  On the other hand, when the raw fabric roll 200 is stored in a storage location, for example, using the fact that the core 210 is hollow, for example, a longer support rod is inserted into the core 210, and two ends of this support rod are inserted. In some cases, it is supported by a support column. That is, the support bar and the support column serve as holding means for the original fabric roll. Also in this case, it causes the positional deviation of the two protrusions 210-1 in the vertical direction and the positional deviation of the core 210 in the axial direction.

JP 2001-39592 A JP 2002-66631 A

  Then, the main subject of this invention is providing the roll body conveyance apparatus suitable for the field where cleanliness is required.

  The present invention also provides a roll body transport device capable of preventing damage to the roll material due to the positional deviation of the core receiving portion and interference with the holding means holding the roll body during the receiving operation of the roll body. There is.

The present invention provides a roll body having a core in the center, the roll body having a protrusion protruding from both ends of the roll body, a core receiving block, and the roll body holding means installed at a predetermined position. in roll transfer apparatus for transferring between, the protruding portions on both sides of the roll body comprises two said cores one core receiving portion receiving block for receiving from the lower side, respectively, each core receiving portion , to the corresponding core-receiving block, vertically provided only displaceably predetermined amount, each of the two core-receiving block, Ri movable der at least in the vertical direction by a separate electric lifters, each core-receiving block also has a detection means for the core receiving portion during its rise is detected to be displaced downward by touching the projecting portion, the holding shape by the holding means When the roll body is received, when the displacement of the core receiving portion is detected by the detecting means, the rise of the core receiving block by the electric lifter is stopped. . Then, after the rise of the core receiving block is stopped, the holding of the roll body by the holding device is released and the roll body is transferred to the core receiving block.

Incidentally, the core-receiving block has a front SL core receiving portion you displaced downward by the predetermined amount from the touch by the initial position of the projecting portion of the ascent of the core-receiving block, the core receiving portion by the touch A switch serving as the detection means that operates by displacement; and a return means for returning the core receiving portion to the initial position when the core receiving portion is separated from the projecting portion.

  The core receiving block further includes stopper means for restricting the displacement of the core receiving portion to the predetermined amount.

  The roll body conveying device according to the present invention drives the core receiving block with an electric lifter that does not use hydraulic pressure, and detects that the core receiving block has touched the protruding portion with a minute force or pressure, and performs the upward driving by the electric lifter. Since it is configured to be stopped, it is suitable for application in the field where cleanliness is required, and holding means that holds the roll body and roll material due to misalignment of the core receiving block during lifting operation It can prevent the fighting, that is, interference.

  With reference to FIGS. 1-4, embodiment of the roll conveyance apparatus by this invention is described.

  FIG. 1 shows a first embodiment when the present invention is applied to AGV. As described with reference to FIG. 5, the raw fabric roll 200 that is the object of AGV1 conveyance in the first embodiment also has a hollow core 210 at the center of the roll body, and the core 210 projects from both ends of the roll body. It has a protrusion 210-1.

  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 includes two core receiving portions 10-1 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 shows an enlarged configuration of one core receiving portion 10-1 and its periphery in the core receiving block 10. The core receiving portion 10-1 is supported on the support base 11 so as to be rotatable about the predetermined angle by the shaft support portion 12 on one end side thereof. Between the core receiving part 10-1 and the support base 11, the core receiving part 10-1 is biased in a direction (in the clockwise direction in FIG. 2) at a position near the other end of the core receiving part 10-1. A compression spring 13 is provided.

  FIG. 2A shows a state where the core receiving portion 10-1 is in an initial position by the compression spring 13 in a no-load state (a state corresponding to FIG. 1A).

  On the other end side of the core receiving part 10-1, a stopper 14 is provided for restricting the counterclockwise rotation of the core receiving part 10-1 from the initial position by a predetermined displacement amount G (predetermined angle). ing. That is, a gap G is set between the lower end of the stopper 14 and the support base 11 in a state in which the stopper 14 is in the initial position in FIG. The support 11 in the vicinity of the compression spring 13 is also provided with a switch 15 that is turned on when the core receiving portion 10-1 is displaced counterclockwise by a predetermined value smaller than the gap G. Such a switch is realized by, for example, a load cell, a limit switch, a photo sensor, or the like.

  The upper surface side of the core receiving portion 10-1 is a receiving surface 10-1a formed of a recess so as to correspond to various diameter sizes of the protruding portion 210-1 of the core 210.

  With such a configuration, when a load greater than the urging force of the compression spring 13 is applied to the receiving surface 10-1a of the core receiving portion 10-1, the core receiving portion 10-1 is countered against the urging force of the compression spring 13. It is displaced clockwise and the switch 15 is turned on. When the switch 15 is turned on, the upward drive by the lifter mechanism 20 is stopped. Subsequently, the lower end of the stopper 14 comes into contact with the support base 11, and the displacement of the core receiving portion 10-1 stops here. FIG. 2B shows a state in which a load greater than the urging force by the compression spring 13 acts on the core receiving portion 10-1 and the lower end of the stopper 14 is in contact with the support base 11.

  On the other hand, when the load acting on the core receiving portion 10-1 disappears, the core receiving portion 10-1 returns to the initial state of FIG. 2A by the action of the compression spring 13, and the switch 15 is turned off. That is, the compression spring 13 not only acts as a means for returning the core receiving part 10-1 to the initial position when the load state is changed to the no-load state, but also adjusts the biasing force to change from the no-load state to the load state. It is possible to arbitrarily set a value of how much load (force) is used to displace the core receiving portion 10-1 at the time.

  With reference to FIG. 1, as in FIG. 5, the operation when receiving the original roll 200 held by the chucking device 300 on both sides will be described.

  The AGV1 can be stopped almost directly under the original roll 200 by the automatic traveling function, and in addition, the two core receiving portions 10-1 are almost directly below the two projecting portions 210-1 of the core 210. A position adjusting mechanism for adjusting the position. Such a position adjusting mechanism is realized by, for example, means for detecting the position of the protruding portion 210-1 of the core 210 and means for aligning the core receiving portion 10-1 with the detected position. The alignment means is realized by a drive means that receives a detection signal from the position detection means and adjusts the position of the entire core receiving block 10 or the support base 11 in the X-axis direction and the Y-axis direction perpendicular to each other on the horizontal plane, and its control means. it can.

  FIG. 1A shows a state in which the two core receiving portions 10-1 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 10 is driven to rise by the electric lifter mechanism 20. When the core receiving portion 10-1 is raised and the core receiving surface 10-1a comes into contact with the protruding portion 210-1, the core receiving portion 10-1 rotates against the urging force of the compression spring 13 and the switch 15 is turned on. It becomes. When the switch 15 is turned on, the ascending drive of the core receiving block 10 is stopped (FIG. 1b). As a result, the core receiving block 10 can receive the raw fabric roll 200.

  The lift drive mechanism 20 is stopped when the switch 15 of one of the two core receiving portions 10-1 is turned on. For this reason, it is desirable that the two core receiving portions 10-1 are in contact with the protruding portion 210-1 almost simultaneously. For example, the holding of the core 210 by the chucking device 300 is parallel to the floor surface. It can be realized by doing so.

  When the control device on the chucking device 300 side is informed that the original fabric roll 200 is ready to be received, the chucking device 300 holds the original fabric roll 200 as shown in FIG. The original roll 200 is released to the two core receiving blocks 10. Subsequently, the core receiving block 10 is driven by the lifter mechanism 20 so as to descend to a predetermined height position.

  AGV1 which hold | maintained the original fabric roll 200 on the core receiving block 10 automatically travels to the production site of another place in which the holding device like the chucking apparatus 300 of FIG. give. In this case, the position of AGV1 is adjusted so that the two core receiving portions 10-1 are almost directly below the two holding portions of the holding device by the automatic traveling function. Thereafter, the core receiving block 10 is lifted by the lifter mechanism 20 and stopped at a height position where the two core receiving portions 10-1 face the two holding portions of the holding device. Subsequently, the two holding portions of the holding device hold the original fabric roll 200 via the protruding portion 210-1 of the core 210. Thereafter, the lifter mechanism 20 lowers the core receiving block 10. Accordingly, when the core receiving portion 10-1 is separated from the protruding portion 210-1, the switch 15 is turned off, and the core receiving portion 10-1 is returned to the initial position by the compression spring 13.

  Here, as described above, the urging force of the compression spring 13 can be arbitrarily adjusted, and it is only necessary to lift the core receiving portion 10-1, so that the force generated when the hydraulic lifter mechanism is raised at a low pressure is used. Small enough compared to Accordingly, even if the core receiving portion 10-1 is misaligned and the core receiving surface 10-1a comes into contact with the outer periphery of the roll material of the original fabric roll 200, it acts on the roll material. The force is small and does not damage the roll material. In this case, of course, the upward driving by the lifter mechanism 20 is stopped when the roll material of the raw roll comes into contact with the core receiving surface 10-1a. When the core receiving portion 10-1 comes into contact with the roll material and stops, the ascending stroke is much shorter than the ascending stroke when the delivery is normally performed, so the control means determines that it is abnormal and issues an alarm. At the same time, the operation is stopped. In this case, the core receiving block 10 is once lowered and then aligned again, and the delivery is retried, or the delivery is retried by manual control of the operator.

  Further, by making the concave shape of the receiving surface 10-1a of the core receiving portion 10-1 into an inverted triangular shape (the curved shape having the deepest center may be used), a vertical plane passing through the center of the concave portion indicated by a one-dot chain line in FIG. Even if the center of the core 210 is slightly deviated from the center, the core 210 is aligned by sliding so that the center of the core 210 is within a vertical plane passing through the center of the recess when the core 210 is placed on the receiving surface 10-1a. Therefore, the core receiving part 10-1 can correspond to the core 210 of various diameter sizes.

  In addition, since the stopper 14 supports the load of at least half of the raw fabric roll 200 via the core receiving portion 10-1 and the protruding portion 210-1 of the core 210 mounted thereon, sufficient mechanical capacity is taken into consideration. Made to have strength.

  FIG. 4 shows a second embodiment of a roll conveying apparatus according to the present invention.

  The second embodiment also shows a case where the present invention is applied to AGV, and a configuration different from the first embodiment is that an electric lifter mechanism is a so-called twin lifter composed of two lifters 30. That is, the core receiving block 10 is divided into two corresponding to the two core receiving portions 10-1 and is individually driven by the lifter 30. The core receiving portion 10-1 and its peripheral configuration may be exactly the same as those in the first embodiment described with reference to FIG.

  By adopting such a twin lifter, in addition to the effects of the first embodiment described above, the core receiving portions 10-1 on both sides individually detect contact with the protruding portion 210-1 of the core 210. Since the lifter 30 is stopped from being lifted, the core 210 can be received even if the center axis C1 of the core 210 shown in FIG. 4 is not parallel to the floor surface. That is, the control unit determines that the core 210 can be received when the switch 15 in the two core receiving units 10-1 is turned on. Of course, means for detecting the position of the protruding portion 210-1 of the core 210 and means for aligning the core receiving portion 10-1 with the detected position may be provided. As described above, the alignment means can be realized by the drive means and the control means that allow the core receiving portion 10-1 to move in the X axis direction and the Y axis direction perpendicular to each other on the horizontal plane.

  In any of the embodiments, by adopting the electric lifter, it is possible to realize a roll body transport device suitable for the production site where cleanliness is required.

  As described above, two embodiments in the case where the present invention is applied to a trackless AGV have been described. However, the present invention is not limited to an orbital AGV, and various roll bodies can be wound around various places. The present invention can be applied to all roll body transfer devices that receive from a storage location held by a means and pass to a holding means installed at a production site.

FIG. 1 is a diagram for explaining a raw roll receiving operation according to a first embodiment in which the present invention is applied to AGV. FIG. 2 is an enlarged view showing the configuration of the core receiving portion and its periphery in the AGV shown in FIG. FIG. 3 is a view for explaining the relationship between the core receiving surface and the core in the core receiving portion shown in FIG. FIG. 4 is a diagram for explaining a raw roll receiving operation according to the second embodiment in which the present invention is applied to AGV. FIG. 5 is a view for explaining a raw roll receiving operation by a conventional AGV. FIG. 6 is a side view for explaining the relationship between the movement of the original roll at the winding position of the original roll and the AGV.

Explanation of symbols

1, 100 AGV
DESCRIPTION OF SYMBOLS 10,110 Core receiving block 10-1, 110-1 Core receiving part 11 Support stand 12 Shaft support part 13 Compression spring 14 Stopper 15 Switch 20 Electric lifter mechanism 120 Hydraulic lifter mechanism 200 Original fabric roll 210 Core 210-1 Protruding part 300 chucking device

Claims (4)

A roll body having a core in the center and having the core projecting from both ends of the roll body is transferred between the core receiving block and the roll body holding means installed at a predetermined position. In the roll body conveying device for performing
The projecting portions of both sides of the roll body comprises two said cores One core receiving portion receiving block for receiving from the lower side, respectively,
Each core receiving portion is provided to be displaceable by a predetermined amount in the vertical direction with respect to the corresponding core receiving block,
Each of the two core-receiving block, Ri movable der at least in the vertical direction by a separate electric lifter, that each core receiving block also has the core receiving portion during its raised and displaced downward by touching the projecting portion And detecting the displacement of the core receiving portion by the detecting means, the detecting means detects the core receiving block by the electric lifter. A roll body conveying device configured to stop the ascent. The core-receiving block has a front SL core receiving portion you displaced downward by the predetermined amount from the touch by the initial position of the projecting portion of the ascent of the core-receiving block, the displacement of the core receiving portion by the touch The roll body according to claim 1, further comprising: a switch as the detecting unit that operates; and a return unit that returns the core receiving unit to the initial position when the core receiving unit is separated from the projecting unit. Conveying device.   The roll body conveying device according to claim 2, wherein the core receiving block further includes stopper means for restricting the displacement of the core receiving portion to the predetermined amount.   The core receiving block includes compression spring means for urging the core receiving portion in the direction opposite to the predetermined amount of displacement as the return means, and the compression spring means is configured to be able to adjust the urging force. The roll body conveying device according to claim 2, wherein the roll body conveying device is provided.

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