JP5150352B2 - Stack delivery method and sheet workpiece counting and discharging apparatus - Google Patents

Description

The present invention relates to a stack delivery method and a sheet-like workpiece counting and discharging apparatus.

  The box making machine (Flexo Folder Gluer) is a multi-function machine that produces cardboard boxes by processing cardboard (sheet-like workpieces) such as printing, cutting, and gluing. The sheet-like work (folded cardboard box) produced and discharged by the box making machine is accumulated and counted by the sheet-like work counting and discharging device (Counter Ejector) arranged in the box making machine. A predetermined number of stacks are delivered to the next process. As the next process, for example, there is a bundling process for bundling the stack. By counting and counting the sheet-like workpieces to obtain a predetermined number of stacks, the count management of the sheet-like workpieces in each process of production, distribution, storage and use becomes easy. Here, the stack is appropriately set according to the thickness (height dimension) depending on the material of the sheet-like workpiece, the lot size of the sheet-like workpiece (the quantity constituting the lot), and the like. If 20 sheets of corrugated cardboard are set as 1 stack, or 10 sheets of corrugated cardboard made of A flute are set as 1 stack, the thickness (height dimension) of the stack is determined from the thickness and number of sheet corrugated boards forming the stack. Determine uniquely. Note that fractions may occur when the total number of sheet-like workpieces constituting a lot is divided by the number of sheet-like workpieces comprising a stack. The handling of this fraction affects the processing time of the entire lot. Since the degree is small, the description thereof is omitted in this specification.

  The role of the counting and discharging device for sheet-shaped workpieces is to accurately and quickly count the sheet-shaped workpieces that have been boxed and discharged by the box making machine, and deliver them to the next process for each stack. There are two conflicting issues: high-speed operation. For example, a sheet-like workpiece may be boxed and discharged in a state where the glue glued in the gluing process does not harden, and the glue is peeled off or glued by applying external force to the glued part of the sheet-like workpiece forming the stack. Correct the glued part of the sheet-like workpiece so that the position does not shift, handle the sheet-like workpiece with care not to damage the sheet-like workpiece due to vibration or impact, and without destroying the posture of the formed stack Transfer to the next process is required for the sheet-like workpiece counting / discharging device. On the other hand, there is an increasing demand for a sheet-like workpiece counting and discharging device capable of high-speed operation following the high-speed operation of the box making machine.

  As a conventional counting and discharging device for sheet-like workpieces, JP 2000-127262 A (hereinafter referred to as Patent Document 1), JP 2005-96995 A (hereinafter referred to as Patent Document 2), and JP 2005. No. -18744 (hereinafter referred to as Patent Document 3) has already been disclosed and is publicly known. Hereinafter, an outline of Patent Documents 1 to 3 will be described. In addition, a code | symbol and a name do not necessarily correspond with the thing of the said gazette.

  A sheet-like workpiece counting / discharging device (counter ejector) described in Patent Document 1 is a backstop 3 that stops a sheet-like workpiece 2 processed and discharged by an upstream box making machine 100 (folder gluer) downstream thereof. And a ledge 104 that temporarily accumulates the sheet-like workpiece 2 that has fallen on the backstop 3, an elevator 105 that receives them from the ledge 104 at a predetermined ascent position, and a sheet-like workpiece 2 that has been accumulated on the elevator 105 in a set number When it reaches, the shutter 106 for partitioning the sheet-like work 2 forming the stack 12 is provided, and the spanker 7 for correcting the position of the end face of the sheet-like work 2 forming the next stack 12 is provided. The upper transfer (conveyor) 109 and the lower transfer (conveyor) 108 that are transported to the process While formed, for passing from the lowered elevator 105 stack 12 to the transfer 109, the pusher 115 to push the stack 12 to the front (downstream side) is disposed. Further, a blower 103 for blowing air onto the upper surface of the sheet-like workpiece 2 is provided above the elevator 105 (see FIG. 6). The shutter 106 is provided with a presser 116 for pressing the stack 12 thereon while the elevator 105 is descending. In the sheet-like workpiece counting and discharging apparatus described in Patent Document 1, the presser 116 and the shutter 106 are connected, and the presser 116 moves forward and backward in conjunction with the shutter 106. The elevator 105 can only perform the raising and lowering operation, and the pusher 115 can only perform the forward and backward movement.

The sheet-like workpiece counting and discharging device (counter ejector) described in Patent Documents 2 and 3 includes a backstop 3 for stopping the sheet-like workpiece 2 processed and discharged in the upstream upstream process downstream, and a backstop. Elevator 125 for depositing sheet-like work 2 that has fallen on 3 at a predetermined ascending position, and sheet-like work that operates when sheet-like work 2 deposited on elevator 125 reaches a set number of sheets to form stack 12 An upper transfer (conveyor) 109 and a lower transfer (conveyor) 108 are provided to transfer the stack 12 to the next process, and the stack 12 is transferred from the lowered elevator 125 to the transfer 108, 109. Moving table 1 for moving the elevator 125 forward and backward to return to the original position 5 facilities. Further, a blower 103 for blowing air onto the upper surface of the sheet-like workpiece 2 is provided above the elevator 125 (see FIG. 7). In the sheet-like workpiece counting and discharging apparatus described in Patent Documents 2 and 3, the shutter 106 performs only forward and backward movement (Patent Document 2), or the tip member of the shutter 106 that moves forward and backward tilts (Patent Document 3). And although the elevator 125 performs only raising / lowering operation, the moving stand 135 to which the elevator 125 is attached moves forward and backward. There are a plurality of combinations of the elevator 125 and the moving table 135 (two sets in FIG. 7). By alternately transferring the stack 12 to the transfer units 108 and 109, it is effective without increasing the apparent speed of the stack 12. The conveyance speed is increased. It should be noted that no constituent member corresponding to a presser for holding the stack 12 is found in Patent Documents 2 and 3 until the stack 12 is transferred from the elevator 125 to the transfer units 108 and 109.
JP 2000-127262 A JP 2005-096995 A JP 2005-119874 A

  However, since the counting and discharging apparatus for sheet-like workpieces described in Patent Document 1 delivers the formed stack 12 to the transfer units 108 and 109, the pusher 115 is moved after the elevator 105 on which the stack 12 is placed descends and stops. The stack 12 must be pushed forward (downstream). Since the transition from the lowering operation of the elevator 105 to the forward operation of the pusher 115 is discontinuous, if the sudden acceleration or sudden stop is performed for the purpose of high speed operation, the posture of the formed stack 12 is collapsed due to the law of inertia. Therefore, when an external force is applied to the pasting portion of the sheet-like workpiece 2 forming the stack 12, the pasting is peeled off or the pasting position is shifted. Therefore, in order to ensure quality, the stack 12 must be transported slowly. In the sheet-like workpiece counting and discharging apparatus described in Patent Document 1, when the shutter 106 is disposed on the downstream side of the elevator 105 (see FIG. 6), the length of the sheet-like workpiece 2 in the conveyance direction is large. In order to cope with this, the driving means (driving unit) of the shutter 106 has to be arranged further downstream, and the shutter 106 is necessarily enlarged (lengthened). Furthermore, since the presser 116 is connected to the shutter 106, the inertia (moment of inertia) of the shutter 106 increases, resulting in a redundant device with low response speed and low position accuracy.

  In the sheet-like workpiece counting and discharging apparatus described in Patent Documents 2 and 3, since there is no component corresponding to a presser that holds the stack 12 until the stack 12 is transferred from the elevator 125 to the transfer units 108 and 109, the stack 12 The posture is easily collapsed, and an external force is applied to the gluing portion of the sheet-like work 2 forming the stack 12, so that the gluing is peeled off or the gluing position is shifted. Further, there is a risk that the stack 12 collides with the upper transfer 109. In addition, even if the stack 12 is held down from above by a pressing lever attached to the shutter 106 (see FIG. 10 of Patent Document 3), the pressing lever follows the delivery of the stack 12 even if it approaches the above-described movement of the presser. When the stack 12 is transferred from the elevator 125 to the transfer 108, 109, the pressing lever is damaged by pushing the upper surface of the stack 12, and the next operation of the shutter 106 is also hindered. Therefore, it is considered that the apparatus cannot be applied to the stack 12 that is easily separated and easily raised.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a stack delivery method and a sheet-like workpiece counting / discharging method device capable of delivering the stack to the transfer through the shortest path while maintaining a stable posture of the stack in which the sheet-like workpiece has reached the set number. Is to provide.

  The present invention relates to an elevator for receiving a sheet-like workpiece processed and discharged by an upstream box making machine at a predetermined rising position from a ledge once accumulated thereon, and a sheet-like workpiece deposited on the elevator. When the set number of sheets is reached and the stack is formed, the sheet-like work to be discharged next is partitioned above the stack, and the stack starts to move down from the elevator until it is transferred to the transfer. A separator that holds the upper surface; a ledge that holds the sheet-like workpiece above the stack partitioned by the separator and that passes the elevator to a predetermined lift position; and a transfer that conveys the stack to the next process. The elevator and the separator move downward while moving the stack to the transfer. Characterized in that it passes only. In order to realize such a configuration, the driving means for moving the separator forward and backward, the driving means for raising and lowering the separator, the driving means for moving the elevator forward and backward, and the driving means for raising and lowering the elevator are independent driving means. Composed.

  According to the present invention, the elevator and the separator move forward while descending simultaneously, and deliver the stack to the transfer. The elevator and the separator are held so as to hold the stack, and are guided in the shortest path while cooperating from the lift position of the elevator to the transfer position to the transfer. It will be transferred to the transfer. By providing the separator with the functions of a conventional shutter and presser, and the elevator with the functions of a conventional elevator and pusher, the sheet-type workpiece counting and discharging apparatus is reduced in size and has little redundancy.

  In the present invention, the separator moves forward while being lowered, partitions the sheet workpiece to be discharged next, above the stack, presses the upper surface of the stack, and moves forward while being lowered in synchronization with the elevator. The stack is transferred to the transfer.

  According to the present invention, the separator moves forward while descending, partitions the sheet-like work to be discharged next, above the stack, presses the upper surface of the stack, and moves forward while descending in synchronization with the elevator. Then, by transferring the stack to the transfer, the separator can be transferred in the shortest time without causing the stack to be scattered and damaged.

  In the present invention, the ledge is composed of an upper ledge and a lower ledge, and the upper ledge holds a predetermined amount of the sheet-like work above the stack partitioned by the separator, and then delivers the sheet to the lower ledge. It is characterized by.

  According to the present invention, the upper ledge is located above the stack during a period from when the elevator and the separator move forward while moving down to deliver the stack to the transfer until the elevator returns to a predetermined lift position. The sheet-like workpiece is held by a predetermined amount and then delivered to the lower ledge. The sheet-like workpiece processed and discharged by the upstream box making machine is placed on the end surface of the sheet-like workpiece held by the upper ledge. It is possible to prevent the sheet-like workpiece from protruding upward from the region for correcting the position, and to reliably correct the position of the end surface of the sheet-like workpiece processed and discharged by the upstream box making machine. The position of the end face can be corrected. In addition, since the upper ledge holds a predetermined amount of the sheet-like workpiece above the stack and delivers it to the lower ledge, it is possible to maintain a time margin until the elevator returns to the predetermined lift position. . Here, the region for correcting the position of the end surface of the sheet-like workpiece is a region from the backstop to the upstream side and from the upper ledge to the discharge position of the upstream box making machine, and the end surface of the sheet-like workpiece The position of is corrected by a spanker. Note that the spanker is a component that has been used in the past, and by slightly vibrating in the horizontal direction and lightly tapping the upstream end surface of the sheet-like workpiece and sandwiching it between the backstop, the posture of the sheet-like workpiece can be changed. This corrects the misalignment of the bonding position after alignment and gluing to some extent.

  The present invention is characterized in that a plurality of the separators are arranged on the upstream side of the elevator, and a sheet-like work to be discharged and advanced next while the separator descends is partitioned above the stack. Moreover, it is preferable that the said separator is distribute | arranged to the substantially left-right symmetric position of the upstream of the said elevator.

  According to the present invention, a plurality of the separators are arranged on the upstream side of the elevator, and the sheet-like workpiece is partitioned at the upper part of the stack by separating the sheet-like workpiece to be discharged and then discharged while the separator descends. Even if the length in the conveying direction of the sheet increases, the position of the driving means for driving the separator does not have to be fixed, and it does not have to move according to the length of the sheet as in the conventional apparatus. Since the separator is arranged on the upstream side of the elevator, the size of the separator including the presser length can be reduced as compared with the case where the separator is arranged on the downstream side of the elevator. In addition, since the inertia (moment of inertia) of the separator can be reduced, a device with high response speed and high positional accuracy is obtained. Since the separator is disposed at a substantially left-right symmetrical position on the upstream side of the elevator, the sheet-like workpiece can be pressed without breaking the left-right balance.

  According to the present invention, the elevator and the separator advance while descending, and deliver the stack to the transfer. The elevator and the separator are held so as to hold the stack, and are guided by the shortest path from the lift position of the elevator to the transfer position to the transfer, so that the transfer can be performed in the shortest time without breaking the posture of the stack. Will be handed over. Further, according to the present invention, the separator moves forward while being lowered, partitions the sheet workpiece to be discharged next, above the stack, presses the upper surface of the stack, and descends in synchronization with the elevator. By moving forward and transferring the stack to the transfer, the separator moves in a shortest path from a predetermined ascending position to a transfer position to the transfer, and the operation time of the separator can be minimized. .

  According to the present invention, a plurality of the separators are arranged on the upstream side of the elevator, and the sheet-like workpiece is partitioned at the upper part of the stack by separating the sheet-like workpiece to be discharged and then discharged while the separator descends. Even if the length in the conveying direction of the sheet increases, the position of the driving means for driving the separator may remain fixed, and it does not have to be moved according to the length of the sheet as in the conventional apparatus. . Since the separator is disposed on the upstream side of the elevator, the size of the separator including the presser length can be reduced as compared with the case where the separator is disposed on the downstream side of the elevator. In addition, since the inertia (moment of inertia) of the separator can be reduced, a device with high response speed and high positional accuracy is obtained. Since the separator is disposed at a substantially left-right symmetrical position on the upstream side of the elevator, the sheet-like workpiece can be pressed without breaking the left-right balance.

  According to the present invention, the upper ledge is located above the stack during a period from when the elevator and the separator move forward while moving down to deliver the stack to the transfer until the elevator returns to a predetermined lift position. The sheet-like workpiece is held by a predetermined amount and then delivered to the lower ledge. The sheet-like workpiece processed and discharged by the upstream box making machine is placed on the end surface of the sheet-like workpiece held by the upper ledge. It is possible to prevent the sheet-like workpiece from protruding upward from the region for correcting the position, and to reliably correct the position of the end surface of the sheet-like workpiece processed and discharged by the upstream box making machine. The position of the end face can be corrected. In addition, since the upper ledge holds a predetermined amount of the sheet-like workpiece above the stack and delivers it to the lower ledge, it is possible to maintain a time margin until the elevator returns to the predetermined lift position. . Therefore, a sheet-like workpiece counting / discharging device capable of transferring the stack to the transfer in the shortest path and in the shortest time while maintaining the stable posture of the stack is realized.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

(Embodiment of the present invention)
FIG. 1 is a perspective view schematically showing a sheet-like workpiece counting / discharging device 1 according to an embodiment of the present invention. FIG. 2 is a schematic view of the sheet-like workpiece counting / discharging device 1 according to the above-described embodiment from the side. FIG. An arrow X1 in FIG. 1 indicates the traveling direction (conveying direction) of the lowermost sheet-like workpiece 2 and is directed from the upstream side to the downstream side.

  The sheet-like workpiece counting / discharging device 1 of the present embodiment includes a backstop 3 that abuts the sheet-like workpiece 2 processed and discharged by the upstream side (right side in FIG. 2) box making machine 100 on the downstream side. The blower 103 for accelerating and dropping the contacted sheet-like cardboard 2 downward by wind pressure, the elevator 50 for receiving the dropped sheet-like work 2 from the ledge 42 at a predetermined ascent position, and depositing on the ledges 41 and 42 The sheet-like workpiece 2 deposited on the spanker 7 that taps the rear end 2d (right side in FIG. 2) of the sheet-like workpiece 2 to align the rear end position (or front end position) and the elevator 50 waiting at the predetermined position P3. When the number of workpieces 2 reaches the set number and the stack 12 is formed, the sheet-like workpiece 2 to be discharged next is partitioned at a predetermined position P5 above the stack 12, and the stack 1 Separator 60 that presses the upper surface 12a of the stack 12 from when it starts to descend by the elevator 50 to the lower transfer 8, and a predetermined amount of sheet-like cardboard 2 above the stack 12 partitioned by the separator 60 An upper ledge 41 that is held and delivered to the lower ledge 42, a lower ledge 42 that delivers a predetermined amount of the sheet-like workpiece 2 received from the upper ledge 41 to the elevator 50 raised to a predetermined lift position P3, and an elevator The lower transfer 8 and the upper transfer 9 are provided for transporting the stack 12 transported by the separator 50 and the lowered position P1 to the next process (FIGS. 1 and 2).

  The backstop 3 is divided into a plurality of parts in the vertical direction (in FIG. 1, it is divided into six parts). This is because the air descending flow from the blower 103 forms a rectifying ventilation groove for passing straight through to the back side (downstream side) of the backstop 3 without generating turbulent flow.

  The elevator 50 includes a lower support portion 51 on which the stack 12 composed of the stacked sheet-like workpieces 2 is placed and a rear end support portion 52 for preventing the stack 12 from collapsing (FIG. 1). The transfer 8, 9 is configured such that a plurality of belts are spaced apart in the transport direction of the stack 12. For example, the lower transfer 8 is composed of five belts, and the upper transfer 9 is composed of two belts. (FIG. 1). The lower support part 51 of the elevator 50 is divided into a plurality of parts on the left and right, and the rear end support part 52 is divided into a plurality of parts in the vertical direction. The groove portion between the lower support portions 51 and 51 is set to a size and a position in which each belt of the lower transfer portion 8 is inserted, and the groove portion between the rear end support portions 52 and 52 is set to the lower transfer portions 8 and 9. The size and the position of each belt are set (FIG. 1). The elevator 50 moves forward and backward by the drive means MH50 and moves up and down by the drive means MV50. The drive unit MH50 and the drive unit MV50 are independent drive units and are servo motors.

  FIG. 3 is a structural view schematically showing the separator 60 arranged in the sheet-like workpiece counting / discharging device 1 of the present embodiment. FIG. 3A is a front view schematically showing the separator 60, and FIG. 3B is a side view schematically showing the separator 60. The separator 60 includes a main body 61 (62) having a bar-shaped protruding member 611 (621) with a sharp tip, and a lifting mechanism 63 that lifts and lowers the main body 61 (62), and is connected to the lifting mechanism 63. By means MV60, the main body parts 61 and 62 are moved up and down synchronously. The drive means MV60 is a servo motor. The rod-shaped protruding member 611 (621) is moved forward and backward by the driving means MH61 (MH62) connected to the belt mechanism 612 (621) (FIG. 3). The driving unit MH61 and the driving unit MH62 are independent driving units and are servo motors.

  On the upstream side of the elevator 50, a plate-like column body 101 (partition) serving as the core of the apparatus 1 is installed in the center line in the conveying direction of the sheet-like workpiece 2 (FIG. 2). The main body portions 61 and 62 of the separator 60 are arranged at substantially symmetrical positions with the column body 101 interposed therebetween (FIG. 3B). The main body portions 61 and 62 of the separator 60 are simultaneously lifted and lowered by the lifting mechanism 63 via a vertically arranged screw shaft (FIG. 3B). And the protrusion amount of the main-body parts 61 and 62 of the separator 60 is varied by the belt mechanism 612 (621), and it is made to respond | correspond to the length of the conveyance direction of the sheet-like workpiece | work 2. FIG. It is possible to further save space by providing a notch in a part of the plate-like column body 101 and storing the elevating mechanism 63 and the driving means MV60.

  The ledge 41 (42) has a plate-like receiving portion (Finger) protruding or recessed. In FIG. 2, the ledge 41 (42) is arranged facing the backstop 3 side and the box making machine 100 side, respectively, and driving means MH41 ( MH42) protrudes or dents. The ledge 41 (42) is arranged to face the backstop 3 side and the box making machine 100 side, respectively, or is further arranged to face the backstop 3 side and the box making machine 100 side. The lower ledge 42 is disposed at a position higher than the predetermined lift position P3 of the elevator 40, and is disposed at a position lower than the predetermined position P5 of the separator 60 (FIG. 2). The upper ledge 41 is disposed at a position higher than the lower ledge 42, and is disposed at a position lower than the upper portion of the spanker 7 (region for correcting the position of the end face of the sheet-like cardboard 2) (FIG. 2). The height of the upper ledge 41 and the lower ledge 42 can be adjusted in the vertical direction.

  A sensor 111 for detecting the processed and discharged sheet-like workpiece 2 is arranged on the upstream side of the sheet-like workpiece counting / discharging device 1 of the present embodiment (FIG. 2), and receives a detection signal from the sensor 111, The control circuit 112 counts and manages the processed and discharged sheet-like workpiece 2 and controls operation timings and operation positions of the separator 60, the elevator 50, the ledges 41 and 42, and the like.

(Stack delivery procedure of the present invention)
A procedure for transferring the stack of the sheet-like workpieces 2 by the sheet-like workpiece counting / discharging device 1 according to the present embodiment will be described below.

  FIG. 4 is a timing chart of the sheet-like workpiece counting / discharging device 1 of the present embodiment. The vertical axis in FIG. 4 represents the vertical position and front / rear position of the separator 60, the front / rear position of the ledges 41 and 42, and the vertical position and front / rear position of the elevator 50. The horizontal axis in FIG. The sheet number (the order of the sheet-like workpiece 2 processed and discharged by the box making machine 100) is shown. Here, a description will be given assuming that the stack 12 is formed by ten sheet-like works 2. FIG. 5 is a cross-sectional view schematically showing an operation mode of the sheet-like workpiece counting / discharging device 1 of the present embodiment from the side surface side. In FIG. 5, the ledges 41 (42) are arranged to face the backstop 3 side and the box making machine 100 side, and are arranged to face the backstop 3 side and the box orthogonal to the box making machine 100 side. . A guide plate 91 for guiding the front end side of the stack 12 conveyed by the elevator 50 is attached to the lower side of the backstop 3 and the inlet side of the upper transfer 9. The guide plate 91 has a convex arc shape on the upstream side, and is formed corresponding to the transport path of the elevator 50 (FIG. 5).

  First, the elevator 50 receives the sheet-like workpiece 2 accumulated from the lower ledge 42 while slightly descending from a position slightly elevated from the predetermined position P3, and waits at the predetermined position P3. Waiting at the initial position P5 upstream and further above the elevator 50, the upper ledge 41 stands by at the retracted position (storage position), and the lower ledge 42 holds the sheet-like workpiece 2 by a predetermined amount. It is transferred to the elevator 50 that has been raised to a predetermined raised position (a position slightly above the predetermined position P3), and then waits at the retracted position (stored position) (see FIG. 5 (f)). When the sheet-like work 2 deposited on the elevator 50 reaches the set number of sheets and the stack 12 is formed, the separator 60 is slightly lowered while moving forward (arrow X61 and arrow in FIG. 5A). The composite arrow XY61 of Y61) partitions the sheet-like workpiece 2 (sheet number 11) to be discharged next (FIG. 5A). The separator 60 is at a timing that is late enough not to interfere with the upper surface or side surface of the last sheet-like workpiece 2 (sheet number 10) forming the stack 12, and the lower surface of the sheet-like workpiece 2 (sheet number 11) to be discharged next. Alternatively, it descends slightly while moving forward from the upstream side to the downstream side at an early timing that does not interfere with the side surface. Then, the upper ledge 41 starts a forward movement (protrusion movement), and the elevator 50 starts a lowering movement (FIG. 4). The separator 60 slightly descends while being advanced from the upstream side to the downstream side, whereby the traveling direction of the separator 60 and the traveling direction until the sheet-like workpiece 2 (sheet number 11) to be discharged next comes into contact with the backstop 3. Therefore, even if the separator 60 and the sheet-like workpiece 2 (sheet number 11) to be discharged next interfere with each other without timing, the sheet-like workpiece 2 (sheet number 11) ) Can be suppressed as much as possible from the separator 60.

  The separator 60 descends in a state where the sheet-like workpiece 2 (sheet number 11) to be discharged next is received on its upper surface, and delivers the sheet-like workpiece 2 (sheet number 11) to the upper ledge 41 that has completed the protruding operation. Further, the separator 60 is further lowered and pressed so that the accumulated stack 12 is slightly abutted from above, and the lifting means MV60 of the separator 60 and the lifting means MV50 of the elevator 50 are interlocked so that the separator 60 and the elevator 50 are interlocked. (The arrows Y52 and Y62 in FIG. 5B) where the separator 60 and the elevator 50 have the same lowering speed (Y52 = Y62). The sheet-like workpieces 2 (sheet numbers 12, 13, and 14) processed and discharged by the box machine 100 are sequentially deposited.

  When the sheet-like workpiece 2 having the sheet number 14 is accumulated on the upper ledge 41, the upper ledge 41 enters the backward operation (storage operation), and the lower ledge 42 starts the forward operation (projection operation) and accumulates four sheets. Is transferred from the upper ledge 41 to the lower ledge 42 (FIGS. 4 and 5C). The elevator 50 and the separator 60 work together to guide the stack 12 to the lower transfer 8 and the upper transfer 9 at the shortest path. The elevator 50 moves forward while descending along the guide plate 91 (the combined arrow XY53 of the arrow X53 and the arrow Y53 in FIG. 5C, the combined arrow XY63 of the arrow X63 and the arrow Y63 in FIG. 5C). Here, the speed at which the separator 60 and the elevator 50 move forward is equal (XY53 = XY63). This is to minimize the influence of inertia (moment of inertia) while minimizing the transport time of the stack 12.

  Even when the lower end of the stack 12 is landed on the lower transfer 8 (point P1 in FIG. 5C), the elevator 50 further descends and transfers the stack 12 to the lower transfer 8 (FIG. 4). Here, by making the horizontal speed of the stack 12 substantially the same as the transport speed of the lower transfer 8, the transport posture of the stack 12 is kept stable. When the separator 60 completes guiding the downstream side of the upper end surface of the stack 12 into the inlet of the upper transfer 9 (point P2 in FIG. 5C), the separator 60 slightly moves upward while leaving the stack 12 (see FIG. 5). Not shown). This is to prevent unnecessary external force from being applied to the conveyed stack 12 by the separator 60.

  The elevator 50 increases the speed of the stack 12 in the transport direction (arrow X1) (arrow X54 in FIG. 5 (d)), and the vertical plate 52 of the elevator 50 moves the upstream end of the stack 12 to the inside of the transfer 8,9. In the state where the end faces are aligned, the transfer to the transfer units 8 and 9 is completed (FIGS. 4 and 5D) .The separator 60 returns to the standby position (point P5), so that the elevator 50 stacks 12 Before the transfer to the transfer 8, 9 is completed, the lift 50 moves backward (the combined arrow XY64 of the arrow X64 and the arrow Y64 in FIG. 5D). When the delivery is completed, the vehicle moves backward horizontally and leaves the stack 12 (not shown), and the stack 12 completely leaves the elevator 50. The elevator 50 is raised starting with retracted disengaged from the transfer 8,9 (5 Synthesis arrow XY55 arrow X55 and the arrow Y55 of (e)).

  The elevator 50 completely separated from the transfer 8 or 9 rises vertically (arrow Y56 in FIG. 5 (f)), reaches a predetermined ascending position (a position slightly elevated from the predetermined position P3), and moves down. The side ledge 42 enters the backward movement (storage operation), and the accumulated eight sheet-like workpieces 2 are transferred to the elevator 50, and the lower ledge 42 is stored (FIG. 4, FIG. 5 (f)). When the elevator 50 receives the eight sheet-like workpieces 2 accumulated from the lower ledge 42, the elevator 50 is slightly lowered from the position slightly raised from the predetermined position P3 and returned to the predetermined position P3 (FIG. 4). This is because the sheet-like workpiece 2 accumulated from the lower ledge 42 is received while the elevator 50 is slightly lowered, so that the sheet-like workpiece 2 is transferred from the lower ledge 42 to the elevator 50. This is because the inertia force is weakened to prevent the sheet-like workpiece 2 from collapsing. Then, the elevator 50 stands by at the predetermined position P3, the separator 60 stands by at the initial position P5 on the upstream side of the spanker 7 and further above the elevator 50, and the ledges 41 and 42 move backward (storage position). (See FIG. 5F). Thereafter, the operations from paragraph 0033 to paragraph 0037 are repeated.

  As described above, the present invention is not limited to the embodiment described above. For example, when the thickness of the stack 12 (height dimension) is large, the lower transfer 8 can be lowered to shorten the transport distance of the elevator 50. Thus, it goes without saying that the present invention can be modified as appropriate without departing from the spirit of the present invention.

It is a perspective view which shows typically the counting discharge apparatus of the sheet-like workpiece | work of one Embodiment to which this invention is applied. It is sectional drawing which shows typically the counting discharge apparatus of the sheet-like workpiece of the said embodiment from the side surface side. It is a block diagram which shows typically the separator distribute | arranged to the counting discharge apparatus of the sheet-like workpiece | work of the said embodiment. FIG. 3A is a front view schematically showing the separator, and FIG. 3B is a side view schematically showing the separator. It is a timing chart of the counting discharge apparatus of the sheet-like work of one embodiment to which the present invention is applied. It is sectional drawing which shows typically the operation | movement aspect of the counting discharge apparatus of the sheet-like workpiece of the said embodiment from the side surface side. It is sectional drawing which shows typically the operation | movement aspect of the counting discharge apparatus of the sheet-like workpiece of the said embodiment from the side surface side. It is sectional drawing which shows typically the operation | movement aspect of the counting discharge apparatus of the sheet-like workpiece of the said embodiment from the side surface side. It is sectional drawing which shows typically the operation | movement aspect of the counting discharge apparatus of the sheet-like workpiece of the said embodiment from the side surface side. It is sectional drawing which shows typically the operation | movement aspect of the counting discharge apparatus of the sheet-like workpiece of the said embodiment from the side surface side. It is sectional drawing which shows typically the operation | movement aspect of the counting discharge apparatus of the sheet-like workpiece of the said embodiment from the side surface side. It is sectional drawing which shows typically the apparatus of the conventional patent document 1 from the side surface side. It is sectional drawing which shows typically the apparatus of the conventional patent documents 2 and 3 from the side surface side.

Explanation of symbols

1 Counting and discharging device for sheet-like workpieces,
2 sheet workpieces, 12 stacks,
3 Backstop,
41 Upper ledge (ledge), 42 Lower ledge (ledge),
50 elevators,
60 separator,
7 Spanka,
8 Lower transfer (transfer),
9 Upper transfer (transfer),
100 box making machine,
MH50, MH60 Horizontally moving drive means (drive means),
MV50, MV60 Lifting means (driving means)

Claims (6)

The elevator that receives the sheet-like workpiece processed and discharged by the upstream box making machine from the ledge once accumulated on the elevator, and the sheet-like workpiece accumulated on the elevator in a set number of sheets When the stack is formed, the sheet-like work to be discharged next is partitioned above the stack, and is transferred to the transfer for transporting the stack to the next process after the stack starts to descend by the elevator. A separator that holds the upper surface of the stack up to, and a ledge that holds the sheet-like workpiece above the stack partitioned by the separator and passes it to the elevator raised to a predetermined rising position,
The stack transfer method, wherein the elevator and the separator move downward while transferring the stack to the transfer.   The separator is moved forward while being lowered, partitions the sheet-like work to be discharged next, and holds the upper surface of the stack, and moves forward while moving downward in synchronization with the elevator. 2. The stack transfer method according to claim 1, wherein the transfer is performed to the transfer.   The ledge is composed of an upper ledge and a lower ledge, and the upper ledge holds a predetermined amount of the sheet-like work above the stack partitioned by the separator, and then delivers it to the lower ledge. The stack delivery method according to claim 1 or 2. The elevator that receives the sheet-like workpiece processed and discharged by the upstream box making machine from the ledge once accumulated on the elevator, and the sheet-like workpiece accumulated on the elevator in a set number of sheets When the stack is formed, the sheet-like work to be discharged next is partitioned above the stack, and is transferred to the transfer for transporting the stack to the next process after the stack starts to descend by the elevator. A separator that holds the upper surface of the stack up to, and a ledge that holds the sheet-like workpiece above the stack partitioned by the separator and passes it to the elevator raised to a predetermined rising position,
The drive means for moving the separator forward and backward, the drive means for raising and lowering the separator, the drive means for moving the elevator forward and backward, and the drive means for raising and lowering the elevator are each constituted by independent drive means,
A counting and discharging apparatus for sheet-like workpieces, wherein the elevator and the separator move downward while transferring the stack to the transfer.   The sheet-like workpiece according to claim 4, wherein a plurality of the separators are arranged on the upstream side of the elevator, and a sheet-like workpiece that is advanced while the separator descends and is discharged next is partitioned above the stack. Work counting and discharging device.   The ledge is composed of an upper ledge and a lower ledge, and the upper ledge holds a predetermined amount of the sheet-like work above the stack partitioned by the separator, and then delivers it to the lower ledge. 6. A sheet discharging apparatus for counting and discharging sheets according to claim 4 or 5.

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