JP2017001245A - Cardboard sheet batch splitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cardboard sheet batch splitter capable of further increasing the batch splitting speed with a simple mechanism.SOLUTION: A cardboard sheet batch splitter 10 vertically splits a batch BT, which is a laminate of a plurality of cardboard sheets DS formed into a box in a cardboard box-forming machine 1, thereby forming small batches with a small number of laminate sheets. The cardboard sheet batch splitter comprises a discharge conveyor 2, a stopper member 31 arranged above downstream of the discharge conveyor to make a contact with the front end of a batch, and a stopper elevator 3 that moves the stopper member vertically. Firstly, when the stopper member is made to fall down to the belt top face of the discharge conveyor to bring the front end of the batch into contact with the stopper member, the discharge conveyor is stopped to make the stopper rise to a rise position corresponding to a batch split position. Next, after the discharge conveyor is actuated to discharge lower small batches SBT1 keeping no contact with the stopper member to a downstream side, upper small batches SBT2 keeping contact with the stopper member are discharged to the downstream side.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cardboard sheet batch splitting apparatus that splits a batch in which a plurality of cardboard sheets stacked in a corrugated board box making machine are vertically stacked to form a small batch with a small number of stacked sheets. .

  Generally, a corrugated cardboard box making machine includes a folder gluer that forms a corrugated cardboard sheet in a box shape by folding the corrugated cardboard sheet that has been subjected to processing such as printing into a predetermined shape and joining the ends thereof, A counter ejector that forms a batch in which a predetermined number of cardboard sheets fed from the folder gluer are stacked and sends them to a binding machine or the like installed on the downstream side (see Patent Document 1). The counter ejector is provided with a batch forming apparatus 100 shown in FIG. 15 and a batch dividing apparatus 200 arranged downstream of the batch forming apparatus and shown in FIGS. Responds to the needs of diversification and high-speed production.

  That is, as shown in FIG. 15, the batch forming apparatus 100 includes a front contact plate 102 that contacts the front end portion of the cardboard sheet DS supplied from the inlet roll 101 and a correction plate that contacts the rear end portion of the cardboard sheet DS. 103, a main ledge 104 that supports the corrugated cardboard sheets to be moved up and down, a pair of auxiliary ledges 105 that receive a batch BT of corrugated cardboard sheets stacked from the main ledge 104, and a batch BT on the auxiliary ledge. And an output conveyor 107 that is disposed at a lowered position of the elevator 106 and conveys the batch BT on the elevator to the downstream side. In the batch forming apparatus 100, by allowing the front contact plate 102 and the elevator 106 to move in the front-rear direction, it is possible to cope with various lengths in the front-rear direction of the corrugated cardboard sheet DS. By making it possible to adjust the entry timing to the BT side, it is possible to cope with different number of stacked cardboard sheets in the batch BT.

  However, when the length in the front-rear direction of the corrugated cardboard sheet DS is increased, the batch weight is increased, so that workability when carrying the batch BT in the subsequent process is lowered. Therefore, when the batch weight becomes heavier than a predetermined value, it is necessary to reduce the number of stacked layers in the batch BT. However, if the batch forming apparatus 100 responds to the decrease in the number of stacked layers, the loss time increases and the production rate of the batch BT decreases. To do. Therefore, the batch forming apparatus 100 forms a batch BT in which a predetermined number of corrugated cardboard sheets DS are laminated to maintain the batch production speed, and then, on the downstream side, the batch BT is a small batch having a small number of laminated sheets. A batch splitting device 200 (see FIGS. 16 to 18) for splitting into SBT is arranged.

  Also, the batch dividing apparatus 200 shown in FIGS. 16 to 18 includes a transport conveyor 201 that transports the batch BT in the transport direction, a front partition body 202 that contacts the front end portion and the rear end portion of the batch BT on the transport conveyor, and A rear partition body 203, and supporting members 204 and 205 provided on the rear partition body 203. The front partition body 202 is moved from the upper surface side of the batch to a division position that is an intermediate position in the vertical direction of the batch BT, and the rear partition body After moving 203 from the lower surface side of the batch to the middle position in the vertical direction of the batch BT (see FIG. 17), the rear partition 203 is brought close to the front partition 202 in a direction parallel to the front-rear direction (conveying direction). And batch dividing means for dividing the batch BT into two upper and lower small batches SBT1 and SBT2. Further, the support members 204 and 205 are formed such that the length of the support surface that supports the small batch SBT2 positioned above among the two small batches SBT1 and SBT2 to be divided can be changed in the transport direction. In addition, the batch dividing means reduces the length of the support surfaces of the support members 204 and 205 when the rear partition 203 moves upward from the conveyor 201 so as to contact the rear end of the batch BT. (Refer to FIG. 17), when the rear partition body 203 moves close to the front partition body 202 in order to divide the batch BT into two small batches SBT1 and SBT2, according to the transport direction length of the batch BT. Thus, the length of the support surface of the support member is extended (see FIG. 18).

  In the batch dividing apparatus 200, when the rear partition body 203 moves so as to be close to the front partition body 202, the length of the support surface of the support members 204 and 205 is extended so that the batch BT on the transport conveyor is transferred. When dividing into small batches SBT1 and SBT2, the small batch SBT2 positioned above can be stably supported, and the rear partition 203 is above the conveyor 201 so that it contacts the rear end of the batch BT. When moving to, the length of the support surfaces of the support members 204 and 205 is shortened, so that the interval between two successive batches BT can be reduced and the batch division speed can be increased.

JP 2013-116597 A

  However, in the batch dividing apparatus 200 shown in FIGS. 16 to 18, after the rear end portion of the batch BT on the transport conveyor passes through the rear partition body 203, the rear partition body 203 moves above the transport conveyor 201, An operation of pushing the rear end portion of the batch BT in the transport direction is necessary. For this reason, since the rear partition 203 moves from the standby position below the conveyor to the position where it abuts against the rear end of the batch BT, useless time (loss time) occurs, and the batch BT division speed is further increased. There was a problem that it was difficult to do. Further, in the batch dividing apparatus 200, the lengths of the support surfaces of the support members 204 and 205 are expanded and contracted in conjunction with the moving operation of the rear partition body 203, so that the drive mechanism for the rear partition body 203 and the support members 204 and 205 is expanded. In addition, the control method is complicated, and there is a problem that equipment costs increase and equipment failures increase.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cardboard sheet batch splitting device that can increase the batch splitting speed with a simple mechanism.

In order to achieve the above object, a batch dividing apparatus for corrugated cardboard sheets according to the present invention has the following configuration.
(1) A cardboard sheet batch splitting apparatus that splits a batch in which a plurality of corrugated cardboard sheets stacked in a corrugated cardboard box making machine are vertically divided to form a small batch with a small number of stacked sheets. And
A discharge conveyor for discharging the batch to the downstream side, a stopper member disposed on the downstream side of the discharge conveyor and in contact with the front end of the batch, and a stopper lifting device for moving the stopper member up and down,
By operating the stopper lifting device, first, the stopper member is lowered to the upper surface of the belt of the discharge conveyor, and then the discharge conveyor is stopped when the front end portion of the batch comes into contact with the stopper member. The stopper member is raised to a raised position corresponding to the batch division position, and then the discharge conveyor is operated to discharge the lower small batch that does not contact the stopper member to the downstream side, and then the stopper member. The upper small batch that contacts the slag is discharged downstream.

  In the present invention, since the stopper member lowered to the upper surface of the belt of the discharge conveyor comes into contact with the front end portion of the batch placed on the discharge conveyor and conveyed downstream, the batch can be aligned in the vertical direction. In addition, after the stopper member is brought into contact with the front end portion of the batch, the discharge conveyor is operated in a state where the stopper member is raised to the rising position corresponding to the division position of the batch. The upper small batch contacting the stopper member and the lower small batch not contacting the stopper member can be divided into two small batches in the vertical direction. That is, the lower small batch that does not come into contact with the stopper member is discharged to the downstream side in a state of being placed on the discharge conveyor, and the upper small batch that comes into contact with the stopper member has the lower small batch as the stopper. When passing the member, it falls onto the discharge conveyor and is discharged downstream by the discharge conveyor.

  Therefore, by simply moving the stopper member that regulates the front end of the batch that is placed on the discharge conveyor and conveyed downstream, the batch is divided in the vertical direction, and small batches with a small number of stacked sheets can be obtained. It can be easily formed. In this case, since the stopper member only regulates the front end portion of the batch, the interval between two or more batches continuously supplied to the batch dividing device can be made as small as possible. Further, since the time for moving the stopper member up and down is very small, loss time due to movement of the stopper member is unlikely to occur. Further, since the upper small batch falls on the discharge conveyor substantially simultaneously with the lower small batch passing through the stopper member, both small batches can be discharged continuously. Therefore, it is possible to significantly improve the batch dividing speed as compared with the conventional case. Moreover, the mechanism and control method for moving the stopper member up and down are simple, and equipment costs and equipment failures can be reduced. In addition, this batch division | segmentation apparatus can also divide | segment a batch into arbitrary numbers not only when dividing a batch into upper and lower halves.

  As a result, according to the present invention, it is possible to provide a cardboard sheet batch splitting device that can further increase the batch splitting speed with a simple mechanism.

(2) In the batch dividing apparatus for corrugated cardboard sheets described in (1),
The stopper member is characterized in that a small batch pressing member formed so as to be able to press the upper surface of a small batch passing through the stopper member is mounted on the downstream side of the stopper member.

  In the present invention, when the small batch passes through the stopper member, the small batch pressing member presses the upper surface of the small batch on the downstream side of the stopper member, so that the corrugated board sheets in the small batch passing through the stopper member are brought into close contact with each other. It is possible to press on the discharge conveyor while discharging the small batches to the downstream side in an aligned state by the discharge conveyor. Therefore, it is possible to reduce the positional deviation between the corrugated cardboard sheets in the small batch discharged to the downstream side by the discharge conveyor. Further, the corrugated sheet on the upper surface side of the lower small batch is caused by the frictional force generated between the dividing boundary surface between the lower surface of the upper small batch that contacts the stopper member and the upper surface of the lower small batch that does not contact the stopper member. The positional deviation in the front-rear direction of the corrugated cardboard sheet generated by being pulled upstream can also be suppressed.

  As a result, there is no need to provide a rear partition body that regulates the positional deviation of the corrugated cardboard sheet as in the conventional batch dividing device, and a support member that expands and contracts the length of the support surface in conjunction with the movement operation of the rear partition body, Batch division speed can be further increased with a simple mechanism.

(3) In the cardboard sheet batch dividing apparatus described in (2),
The small batch pressing member includes an elastic roller body formed to be rotatable from the upstream side to the downstream side.

  In the present invention, since the elastic roller body presses the upper surface of the small batch that passes through the stopper member while rotating from the upstream side to the downstream side, the corrugated cardboard sheet in the small batch is brought into close contact without resistance, and the upstream side to the downstream side. Can be discharged. Therefore, for example, it is possible to further suppress the positional deviation in the front-rear direction of the corrugated cardboard sheet that is generated when the uppermost corrugated sheet in the lower small batch is pulled upstream by the upper small batch.

  As a result, the batch division speed can be further increased with a simple mechanism while further suppressing the positional deviation in the front-rear direction of the corrugated board sheet in the small batch divided vertically.

(4) In the batch dividing apparatus for corrugated cardboard sheets described in any one of (1) to (3),
A lifter member is provided on the upstream side of the stopper member to support an upper small batch in contact with the stopper member in cooperation with a lower small batch not in contact with the stopper member.

  In the present invention, when the lower small batch is discharged to the downstream side by the discharge conveyor, the lifter member provided on the upstream side of the stopper member does not contact the upper small batch that contacts the stopper member. Since it supports in cooperation with a small batch, the load of the upper small batch which acts on a lower small batch can be reduced. Therefore, it is possible to reduce the frictional force generated between the divided boundary surfaces between the lower surface of the upper small batch and the upper surface of the lower small batch. Further, the frictional force that pulls the lower surface of the upper small batch to the downstream side by the upper surface of the lower small batch can be canceled by the frictional force generated between the lower surface of the upper small batch and the upper surface of the lifter member. Further, when the rear small batch passes through the stopper member and the upper small batch falls on the discharge conveyor, the upper small batch is lowered while being supported by the lifter member, and is then placed on the discharge conveyor. Can be landed. Therefore, the position shift of the cardboard sheet in the upper small batch and the lower small batch can be further suppressed. In particular, when the upper small batch falls on the discharge conveyor, even if the restriction to the downstream side by the stopper member for the upper small batch does not work, the upper small batch is supported by the lifter member. It is possible to effectively suppress the cardboard sheet on the lower surface side of the small batch from being pulled downstream.

  As a result, there is no need to provide a rear partition body that regulates the positional deviation of the corrugated cardboard sheet as in the conventional batch dividing device, and a support member that expands and contracts the length of the support surface in conjunction with the movement operation of the rear partition body, Batch division speed can be further increased with a simple mechanism.

(5) In the batch dividing apparatus for cardboard sheets described in (4),
The lifter member is characterized in that a support surface for supporting the upper small batch is formed so as to increase a frictional force in a horizontal direction with the corrugated cardboard sheet.

  In the present invention, since the support surface supporting the upper small batch in the lifter member increases the frictional force in the horizontal direction with the corrugated cardboard sheet, the boundary surface between the lower surface of the upper small batch and the support surface of the lifter member The frictional force generated between the two can overcome the frictional force generated between the divided boundary surfaces between the lower surface of the upper small batch and the upper surface of the lower small batch. Therefore, the position shift in the front-rear direction of the corrugated cardboard sheet caused by the cardboard sheet on the lower surface side of the upper small batch being pulled downstream can be further suppressed.

  As a result, the batch division speed can be further increased with a simple mechanism while further suppressing the positional deviation in the front-rear direction of the corrugated board sheet in the small batch divided vertically.

(6) In the batch dividing apparatus for corrugated cardboard sheets described in any one of (1) to (5),
The stopper member is lifted further upward from the raised position by the stopper lifting device when the rear end portion of the lower small batch that does not come into contact with the stopper member passes through the stopper member or immediately before the stopper member. Features.

  In the present invention, when the lower small batch that does not come into contact with the stopper member passes through the stopper member in the middle of being discharged downstream by the discharge conveyor, or immediately before it, the stopper lifting device is operated to stop the batch of the batch. Since the upper small batch falls on the discharge conveyor and passes through the stopper member, the upper surface of the upper small batch dropped on the lower end of the stopper member and on the discharge conveyor. And the gap can be enlarged. Therefore, when the upper small batch passes through the stopper member, even if the front end side portion of the uppermost corrugated cardboard sheet is deformed upward due to warpage, the risk of interference between the corrugated cardboard sheet and the stopper member is reduced. Can do.

  As a result, it is possible to further increase the batch dividing speed with a simple mechanism while preventing clogging of corrugated cardboard sheets in small batches divided vertically.

(7) In the batch dividing apparatus for corrugated cardboard sheets described in any one of (1) to (6),
An upstream side of the stopper member is provided with a measuring device for measuring the thickness of the batch placed on the discharge conveyor and in contact with the stopper member, and the thickness dimension of the batch measured by the measuring device is set. Based on the above, the amount of movement of the stopper member from the lowered position to the raised position is corrected by the stopper lifting device, and the raised position of the stopper member is adapted to the divided position.

  In the present invention, after the thickness dimension of the batch placed on the discharge conveyor and in contact with the stopper member is measured by the measuring device, the stopper member is raised and stopped based on the thickness dimension of the batch. Since (rising position) is adjusted so as to match the division position of the batch, even if the thickness dimension of the batch varies, the number of stacked small batches to be divided can be kept constant. In addition, it is preferable to provide a pressure roller that presses from above in the vicinity of the location where the batch is measured, and when the thickness of the batch is measured by the measuring device, the cardboard sheets are closely adhered to each other by the pressure roller. When a plurality of stopper members are provided in the width direction (left-right direction) of the batch, the thickness of the batch is measured at a position adjacent to each stopper member, and the thickness of each stopper member is determined based on the thickness dimension. It is preferable to correct the amount of movement to be moved from the lowered position to the raised position.

  As a result, the batch dividing speed can be further increased with a simple mechanism while improving the accuracy of the number of stacked layers in the vertically divided small batch.

  ADVANTAGE OF THE INVENTION According to this invention, the batch division apparatus of the corrugated cardboard sheet | seat which can make batch division speed faster with a simple mechanism can be provided.

1 is an overall view of a corrugated cardboard box making machine equipped with a corrugated cardboard batch dividing device according to an embodiment of the present invention. FIG. 2 is a perspective view of the cardboard sheet batch dividing apparatus shown in FIG. 1. FIG. 3 is a side view of the batch dividing apparatus for corrugated cardboard sheets shown in FIG. 2. FIG. 4 is a block diagram of an electrical configuration in the batch dividing apparatus for corrugated cardboard sheets shown in FIG. 3. It is an operation | movement flowchart in the batch division apparatus of the cardboard sheet | seat shown in FIG. It is operation | movement sectional drawing (step S1-S5 of FIG. 5) in the batch division apparatus of the cardboard sheet | seat shown in FIG. It is operation | movement sectional drawing (step S6 of FIG. 5, S7) in the batch division apparatus of the corrugated cardboard sheet | seat shown in FIG. It is operation | movement sectional drawing (step S8 of FIG. 5) in the batch division apparatus of the cardboard sheet | seat shown in FIG. It is operation | movement sectional drawing (step S9 of FIG. 5) in the batch division apparatus of the cardboard sheet | seat shown in FIG. It is operation | movement sectional drawing (step S10 of FIG. 5) in the batch division apparatus of the corrugated board sheet | seat shown in FIG. It is operation | movement sectional drawing (steps S11-S13 of FIG. 5) in the batch division apparatus of the corrugated board sheet | seat shown in FIG. It is operation | movement sectional drawing (step S13 of FIG. 5) in the batch division apparatus of the cardboard sheet | seat shown in FIG. It is operation | movement sectional drawing (step S14 of FIG. 5) in the batch division apparatus of the cardboard sheet | seat shown in FIG. FIG. 6 is an operation sectional view (steps S14 and S1 in FIG. 5) in the batch dividing apparatus for corrugated cardboard sheets shown in FIG. It is a side view of the batch formation apparatus of the conventional corrugated cardboard sheet. It is a side view of the batch dividing apparatus of the conventional corrugated cardboard sheet. It is a side view of the batch dividing apparatus of the conventional corrugated cardboard sheet. It is a side view of the batch dividing apparatus of the conventional corrugated cardboard sheet.

  Next, a cardboard sheet batch splitting apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. Here, the overall configuration of the cardboard sheet box making machine including the batch dividing device will be briefly described, and then the detailed configuration of the batch dividing device will be described. Next, the operation method of the batch dividing apparatus will be described in detail.

<Overall configuration of corrugated board box making machine>
First, an overall configuration of a corrugated sheet box making machine including a corrugated sheet batch dividing apparatus according to the present embodiment will be described with reference to FIG. FIG. 1 shows an overall view of a corrugated cardboard box making machine equipped with a batch dividing apparatus for corrugated cardboard sheets according to this embodiment. In addition, the up-down direction and the front-back direction of the apparatus are indicated by the directions of arrows shown in the drawings. Here, the front means the downstream side, and the rear means the upstream side. The same applies to the other drawings.

  As shown in FIG. 1, a corrugated cardboard box making machine 1 includes a sheet feeding device 11, a printing device 12, a crease slotter 13, a folder gluer 14, a batch forming device 15, a transport conveyor 16, and batch division. The apparatus 10 and the binding machine 17 are disposed in order from the upstream side to the downstream side. Each device is controlled by the corrugated board box making machine control management device 18 so that it can be automatically operated.

  The sheet supply device 11 is a device that supplies the flat cardboard sheets SH stacked on the table 111 to the downstream side one by one by the kicker 112. The printing device 12 is a device that performs printing on the surface of the corrugated cardboard sheet SH. Here, the printing device 12 includes a plurality of printing roll units 121 and 122 and enables multicolor printing. The crease slotter 13 is an apparatus that includes a ruled line roll 131 and a slotter 132, and applies a ruled line and a grooving process to the corrugated cardboard sheet SH to form a seam.

  The folder gluer 14 includes a guide rail 141, a transport belt 142, an adhesive application roll 143, a folding bar 144, and a folding belt 145, and supports and moves the cardboard sheet SH between the guide rail 141 and the transport belt 142. In the meantime, an adhesive is applied to the seam by the adhesive application roll 143, the cardboard sheet SH is folded by the folding bar 144, and the seam is further adhered by the folding belt 145, so that the box is in a folded state. It is an apparatus for producing a cardboard sheet DS.

  The batch forming apparatus 15 moves up and down the front corrugated board 152 that contacts the front end of the corrugated cardboard sheet DS supplied from the inlet roll 151, the correction plate 153 that contacts the rear end of the corrugated cardboard sheet DS, and the corrugated sheets stacked. A main ledge 154 that can be supported, a pair of auxiliary ledges 155 that receive a batch BT of corrugated cardboard sheets laminated from the main ledge 154, an elevator 156 that receives the batch BT on the auxiliary ledge and moves it downward, and an elevator 156 A delivery conveyor 157 and an upper conveyor 158 which are arranged at the lowered position and convey the batch BT on the elevator to the downstream side, and form a batch BT in which a predetermined number of corrugated cardboard sheets DS supplied from the folder gluer 14 are laminated to the downstream side It is a device that sends it out.

  The conveyor 16 includes an upper conveyor 161 and a lower conveyor 162, and is a device that stabilizes the shape of the batch BT that is stacked in a predetermined number while being regulated in the vertical direction by both conveyors and supplies the batch BT 10 to the batch dividing device 10. . The upper conveyor 161 is moved up and down in accordance with the thickness dimension of the batch BT so that the gap between the upper and lower conveyors in the transport conveyor 16 can be varied. Further, the conveyor length of the conveyor 16 is set to such a length that the shape of the portion where the adhesive of the corrugated board DS is dried and folded can be stabilized.

  The batch dividing device 10 includes a discharge conveyor 2, a stopper lifting / lowering device 3, and a small batch pressing member 4, and divides a predetermined number of stacked batches BT in the vertical direction to form small batches SBT1 and SBT2 having a small number of stacked layers. It is a device to do. The batch dividing device 10 is operated when the length in the front-rear direction of the cardboard sheet DS is equal to or greater than a predetermined value. The batch dividing device 10 will be described in detail later. The binding machine 17 is an apparatus that binds the small batches SBT1 and SBT2 discharged from the batch dividing apparatus 10 with a belt in order to transport them to a subsequent process.

<Configuration of batch splitting device>
Next, the configuration of the batch dividing apparatus will be described with reference to FIGS. FIG. 2 shows a perspective view of the batch dividing apparatus for corrugated cardboard sheets shown in FIG. FIG. 3 shows a side view of the batch dividing apparatus for corrugated cardboard sheets shown in FIG. FIG. 4 is a block diagram showing an electrical configuration of the batch dividing apparatus for corrugated cardboard sheets shown in FIG.

  As shown in FIGS. 2 to 4, the batch dividing device 10 includes a discharge conveyor 2, a stopper lifting / lowering device 3, a small batch pressing member 4, a lifter device 5, a batch dividing control device 6, and a batch upper part. A regulating device 7, a small batch conveyance conveyor 8, and an apparatus main body 9 are provided.

  The apparatus main body 9 is horizontally extended in the front-rear direction on a pair of side frames 91, 91 extending in the front-rear direction at the left and right ends and standing in the up-down direction, and on the inner wall side of both side frames 91, 91. And a pair of main frame members 92, 92 and an auxiliary frame member 93 connected to the front end portions of the main frame members 92, 92 and extending in the left-right direction. A bracket 94 for mounting a fifth sensor 67, which will be described later, is formed at the front ends of the side frames 91, 91. Frame driving mechanisms (not shown) for raising and lowering both main frame members 92 and 92 in the vertical direction are mounted on the side frames 91 and 91, respectively, and depending on the type of batch BT supplied, The vertical position of 92 and auxiliary frame member 93 can be adjusted.

  Between the pair of side frames 91, 91, the discharge conveyor 2 that conveys the batch BT from the upstream side to the downstream side is fixed horizontally. A plurality of belts 21, 21, 21 are wound around the discharge conveyor 2 with a predetermined gap in the left-right direction. The belt 21 of the discharge conveyor 2 extends from the vicinity of the front end portion 911 of the side frame 91 to a position adjacent to the lower conveyor 162 (see FIG. 1) of the transport conveyor 16 described above. It is almost the same. The discharge conveyor 2 includes a drive motor 22 capable of speed control, and transports the batch BT placed on the belt 21 from the upstream side to the downstream side at an arbitrary speed. The drive motor 22 is connected to the front end portion (downstream side) of the discharge conveyor 2.

  A stopper elevating device 3 is disposed on the downstream side of the discharge conveyor 2. Here, the two stopper lifting / lowering devices 3 (3A, 3B) are fixedly installed in a vertically standing state at a predetermined interval on the downstream side surface of the auxiliary frame member 93 and in the central portion in the left-right direction. Yes. The stopper lifting / lowering device 3 includes a stopper member 31 that contacts the front end of the batch BT, a ball screw type drive mechanism 32 that moves the stopper member 31 up and down, and a drive motor 33 that rotates the screw shaft of the drive mechanism 32. ing. The drive motor 33 is, for example, a servo motor having a position detection function, and can stop the stopper member 31 at an arbitrary position in the vertical direction.

  The stopper member 31 horizontally connects the vertical wall portion 311 formed vertically on the upstream side, the vertical wall portion 313 formed vertically on the downstream side, and the lower ends of both the vertical wall portions 311, 313. It has a horizontal wall portion 312 and has a substantially U-shaped cross section with the upper portion opened as a whole. The upstream vertical wall portion 311 is formed with a contact surface that contacts the front end portion of the batch BT, and the contact surface is formed in a rectangular shape having a long side equal to or greater than the thickness dimension of the batch BT in the vertical direction. ing. It is preferable that a fluororesin member 311J having a smooth surface and high wear resistance is attached to the contact surface. The lower end of the fluorine-based resin member 311J is preferably formed to protrude slightly downward from the lower surface of the lateral wall portion 312. The downstream vertical wall portion 313 is fastened to a moving body (nut portion) 321 of the ball screw drive mechanism 32.

  A small batch pressing member 4 formed so as to be able to press the upper surfaces of the small batches SBT <b> 1 and SBT <b> 2 passing through the stopper member is attached to the stopper member 31 on the downstream side of the stopper member 31. The small batch pressing member 4 includes a substantially cylindrical elastic roller body 41 and a support 42 fixed to the vertical wall portion 313 on the downstream side of the stopper member 31 by pivotally supporting the elastic roller body 41. . The elastic roller body 41 is formed of a sponge-like member and presses the upper surfaces of the small batches SBT1 and SBT2 that pass through the stopper member 31 while elastically deforming. The elastic roller body 41 is formed to be rotatable from the upstream side to the downstream side. The outer peripheral surface of the elastic roller body 41 protrudes downward from the lower end of the lateral wall portion 312 of the stopper member 31. In a state where the outer peripheral surface of the elastic roller body 41 presses the upper surface of the small batches SBT1 and SBT2, a minute gap is formed between the lateral wall portion 312 of the stopper member 31 and the small batches SBT1 and SBT2 (FIG. 9, See FIG.

  The lifter device 5 is fixed to the apparatus main body 9 in the left-right clearance formed between the belts 21, 21, 21 of the discharge conveyor 2 on the upstream side of the stopper member 31. At least one lifter device 5 is disposed between the front end portion and the rear end portion of the discharge conveyor 2 according to the front and rear lengths of the batch BT to be divided. Here, a downstream lifter device 5A capable of dealing with a batch BT having the shortest batch front-rear length and an upstream lifter device 5B capable of dealing with the batch BT having the largest batch front-rear length are provided. The lifter device 5 (5A, 5B) includes a lifter member 51 that contacts the lower surface of the batch and a drive mechanism 52 that moves the lifter member 51 up and down. The drive mechanism 52 is, for example, an air cylinder type drive mechanism.

The lifter member 51 operates to support the upper small batch SBT <b> 2 that contacts the stopper member 31 in cooperation with the lower small batch SBT <b> 1 that does not contact the stopper member 31. That is, the lifter member 51 stands by below the belt upper surface 211 of the discharge conveyor 2, and at the same time as the rear end portion of the lower small batch SBT1 passes through the lifter member 51, the lifter member 51 rises to horizontally dispose the upper small batch SBT2. Support in shape. Also, the lifter member 51 has a small batch SBT1 below.
At the same time that the rear end portion passes through the stopper member 31, it is lowered to the standby position. The lifter member 51 is preferably formed, for example, by attaching a rubber member to the support surface so as to increase the horizontal frictional force f3 acting between the support surface and the cardboard sheet DS ( (See FIGS. 10 and 11).

  Above the discharge conveyor 2, a batch upper regulating device 7 is disposed. The batch upper regulating device 7 includes an upper regulating roller 71 that regulates the upper surface of the batch BT that contacts the stopper member 31 from above, and a pressing roller 72 that presses the upper surface of the front end portion of the batch BT that contacts the stopper member 31 downward. It has. A plurality of upper regulating rollers 71 are arranged at appropriate intervals in the left-right direction. The upper regulating roller 71 is formed by pivotally supporting a plurality of rubber rollers 711 arranged in the front-rear direction on a support frame 712 extending in the front-rear direction. The front end portion of the support frame 712 is connected to the lower surface of the auxiliary frame member 93 via a hinge member 74. The rear end portion of the support frame 712 is connected to the front end portion of the upper conveyor 161 (see FIG. 1) of the transport conveyor 16 described above, and moves up and down in conjunction with the upper conveyor 161.

  The pressing roller 72 is formed of a sponge-like member similar to the elastic roller body 41 mounted on the downstream side of the stopper member 31. The pressing roller 72 is fixed to the auxiliary frame member 93 via the drive cylinder 73 at a position adjacent to the stopper member 31. The pressing roller 72 is pivotally supported by the lower end of the operating bracket 732 connected to the upper end of the cylinder rod 731 of the drive cylinder 73 that moves in the vertical direction. When the thickness dimension of the batch BT is measured, the pressure roller 72 presses the upper surface of the front end portion of the batch BT contacting the stopper member 31 downward by moving the cylinder rod 731 of the drive cylinder 73 downward. The cardboard sheets DS of the batch BT are brought into close contact with each other.

  The small batch conveyor 8 is a conveyor that is disposed between the front end of the discharge conveyor 2 and the binding machine 17 (see FIG. 1) and conveys the small batches SBT1 and SBT2 that pass through the stopper member 31 to the downstream side. is there. The small batch conveyor 8 includes a plurality of cylindrical rollers 81 arranged at predetermined intervals in the front-rear direction, a belt 82 that rotates the cylindrical rollers 81, and a drive motor 83 that drives the belt 82. The drive motor 83 is connected to the front end portion of the small batch transport conveyor 8. The drive motor 83 of the small batch conveyor 8 is driven in conjunction with the drive motor 22 of the discharge conveyor 2.

  The batch division control device 6 is a control device that enables automatic operation of the batch division device 10. The batch division control device 6 is arranged along the outer side surface of the left side frame 91, and the batch device BT at the measurement device 61 that measures the thickness dimension of the batch BT and the rear end portion (upstream side) of the discharge conveyor 2. , A second sensor 63 and a third sensor 64 for detecting the batch BT on the downstream side of the discharge conveyor 2, and a fourth sensor 65 for detecting the small batches STB1 and STB2 passing through the stopper member 31. And the 5th sensor 67 and the 6th sensor 68 and the 7th sensor 69 which detect batch BT which passes through the lifter member 51 are electrically connected, respectively. The batch split control device 6 includes a drive motor 22 for the discharge conveyor 2, a drive motor 33 for the stopper lifting / lowering device 3, a drive mechanism 52 for the lifter device 5, a drive cylinder 73 for the pressing roller 72, and a small batch transport conveyor. Eight drive motors 83 are electrically connected to each other. Further, the batch division control device 6 is also electrically connected to the corrugated board box making machine control management device 18 to exchange various control signals.

  The measuring device 61 is a distance measuring device using laser light that irradiates the upper surface of the front end portion of the batch BT at a position adjacent to the two stopper members 31 (31A, 31B), and two measuring devices 61 are attached to the auxiliary frame member 93. ing. The batch division control device 6 corrects each movement amount by which each stopper member 31 is moved from the lowered position to the raised position by each stopper lifting device 3 based on each thickness dimension of the batch BT measured by each measuring device 61. Even when the height of the division position of the batch BT is different in the left-right direction, the lower end (upward position) of each stopper member 31 is adapted to the division position of the batch BT.

  The first sensor 62, the second sensor 63, and the third sensor 64 have a projector that projects light in the left-right direction slightly above the belt upper surface 211 of the discharge conveyor 2, and a light receiver that receives the light. This is a sensor that outputs a batch detection signal when the light beam projected from is blocked by the side ends of the batch BT or the small batches SBT1 and SBT2. In each of the first sensor 62, the second sensor 63, and the third sensor 64, the light projector is fixed to one side frame body 91, and the light receiver is fixed to the other side frame body 91 that faces the other.

  The fourth sensor 65 has a projector for projecting a light beam and a light receiver for receiving the light beam in the same case, and the upper surface of the small batches SBT1 and SBT2 through which the light beam projected from the projector passes through the stopper member 31. A sensor that outputs a batch detection signal when it is reflected and received by a light receiver. Two fourth sensors 65 (651, 652) are provided in the central portion in the left-right direction of the apparatus on the downstream side of the stopper member 31. The two fourth sensors 65 (651, 652) are fixed on both side surfaces of the support 66 so that the distance between them in the left-right direction is larger than the width of the slot groove of the cardboard sheet DS. The support 66 is fixed to the central portion of the auxiliary frame member 93 in the left-right direction.

  The fifth sensor 67 includes a light projector that projects a plurality of light beams in the left-right direction slightly above the upper surface of the cylindrical roller 81 of the small batch conveyor 8, and a light receiver that receives the light beams. This is a sensor that outputs a batch detection signal when light rays are shielded by the side ends of the small batches SBT1 and SBT2 that pass through the stopper member 31. Each of the fifth sensors 67 is fixed to a bracket 94 of one side frame 91 and a light projector to the bracket 94 of the other side frame 91 facing the light receiver. The fifth sensor 67 is a distance in the front-rear direction in the lower range of the elastic roller body 41 and the lateral wall portion 312 in order to reliably detect the small batches SBT1 and SBT2 passing through the lower range of the elastic roller body 41 and the lateral wall portion 312. Rather, the distance in the front-rear direction in the irradiation range of the plurality of light beams projected from the projector of the fifth sensor 67 is set to be larger.

  The sixth sensor 68 and the seventh sensor 69 are laser beam distance measuring devices that respectively irradiate the lower surface of the batch BT. When the lower surface of the upper small batch SBT2 contacting the stopper member 31 is irradiated, the batch detection signal Is a sensor that outputs. The sixth sensor 68 is disposed below the belt upper surface 211 of the discharge conveyor 2 and close to the front end portion of the downstream lifter device 5A, and the seventh sensor 69 is disposed below the belt upper surface 211 of the discharge conveyor 2. And it is arrange | positioned in the position close | similar to the front-end part of the upstream lifter apparatus 5B.

<Operation method of batch dividing apparatus>
Next, an operation method of the batch dividing apparatus will be described with reference to FIGS. FIG. 5 shows a flowchart of the operation of the cardboard sheet batch dividing apparatus shown in FIG. FIG. 6 shows an operation cross-sectional view (steps S1 to S5 in FIG. 5) in the cardboard sheet batch dividing apparatus shown in FIG. FIG. 7 shows an operation cross-sectional view (steps S6 and S7 in FIG. 5) in the batch dividing apparatus for corrugated cardboard sheets shown in FIG. FIG. 8 shows an operation cross-sectional view (step S8 of FIG. 5) in the cardboard sheet batch dividing apparatus shown in FIG. FIG. 9 is a sectional view showing the operation of the cardboard sheet batch dividing apparatus shown in FIG. 3 (step S9 in FIG. 5). FIG. 10 shows an operation cross-sectional view (step S10 in FIG. 5) in the cardboard sheet batch dividing apparatus shown in FIG. FIG. 11 shows an operation cross-sectional view (steps S11 to S13 in FIG. 5) in the batch dividing apparatus for corrugated cardboard sheets shown in FIG. FIG. 12 shows an operation cross-sectional view (step S13 in FIG. 5) in the corrugated sheet batch dividing apparatus shown in FIG. FIG. 13 is a cross-sectional view of the operation of the cardboard sheet batch dividing apparatus shown in FIG. 3 (step S14 in FIG. 5). FIG. 14 is a sectional view (steps S14 and S1 in FIG. 5) of the operation of the batch dividing apparatus for corrugated cardboard sheets shown in FIG.

  As shown in FIGS. 5 and 6, when the batch division control device 6 receives the operation signal for starting the processing of the batch division device 10, it activates the drive motor 33 of the stopper lifting / lowering device 3 to move the stopper member 31 to the lowered position. (Step S1). The lowering position of the stopper member 31 is substantially the same height as the belt upper surface 21 of the discharge conveyor 2 and is close enough to the extent that it does not interfere with the belt upper surface 21.

  Next, the batch division control device 6 determines whether or not it is necessary to discharge the remaining sheets that are not to be divided (step S2). The remaining sheet not to be divided corresponds to a batch BT having a smaller number of layers than the normal number of layers. For example, when the regular number of layers is 10, the batch BT having 8 layers is applicable.

  Next, when it is not necessary to discharge the remaining sheets, the batch division control device 6 detects the presence of supply of a new batch BT at the rear end (upstream side) of the discharge conveyor 2 by the first sensor 62. Confirm with the signal (step S3). When receiving the batch detection signal from the first sensor 62, the batch division control device 6 determines whether or not the discharge conveyor 2 is being driven (step S4). If the discharge conveyor 2 is stopped, the discharge conveyor 2 is stopped. A signal for starting the second drive motor 22 is output (step S5). The batch division control device 6 receives a batch detection signal from the second sensor 63 and decelerates the drive motor 22 of the discharge conveyor 2 when the batch BT on the discharge conveyor 2 approaches the stopper member 31 to a predetermined distance. Is output. Here, it is preferable that the batch division control device 6 decelerates the discharge conveyor 2 to a speed range in which the batch BT does not rebound when the front end portion of the batch BT comes into contact with the stopper member 31.

  Next, as shown in FIG. 5 and FIG. 7, when the batch BT on the discharge conveyor 2 advances to the stopper position and the batch detection signal of the third sensor 64 is received, the batch division control device 6 A signal for stopping the drive motor 22 is output. The batch division control device 6 receives the batch detection signal of the first sensor 62, calculates the travel distance of the batch BT from the rotation speed of the drive motor 22 of the discharge conveyor 2, and the batch BT hits the stopper member 31. Although the discharge conveyor 2 is stopped in accordance with the contact timing, the batch detection signal of the third sensor 64 is also used in order to further improve the stop accuracy. The batch division control device 6 stops the drive motor 22 of the discharge conveyor 2 at the same time that the batch BT comes into contact with the stopper member 31 when the discharge conveyor 2 is decelerated to a speed range in which the rebound of the batch BT does not occur. Even if it controls so that it may carry out, after batch BT contact | abuts to the stopper member 31, you may control to stop the drive motor 22 of the discharge conveyor 2 after fixed short time progress. Note that the timing at which the batch BT comes into contact with the stopper member 31 can be determined by a change in the rotational speed of the drive motor 22 or an increase in motor torque.

  Next, as shown in FIGS. 5 and 8, when the batch division control device 6 receives the stop detection signal from the drive motor 22 of the discharge conveyor 2 after receiving the batch detection signal of the third sensor 64, the stopper member 31. Is measured by the measuring device 61 (step S7), and the driving motor 33 of the stopper lifting / lowering device 3 is operated based on the thickness size of the batch BT measured by the measuring device 61 to stop the batch BT. The member 31 is moved from the lowered position to the raised position corresponding to the division position of the batch BT (step S8). Note that the ascending position of the stopper member 31 is set so that the lower end of the stopper member 31 is approximately 1/2 of the thickness dimension of the cardboard sheet DS from the dividing boundary surface of the batch BT.

  Next, as shown in FIGS. 5 and 9, when the batch division control device 6 receives a signal indicating that the stopper member 31 has been raised to the raised position from the drive motor 33 of the stopper elevating device 3, the drive motor for the discharge conveyor 2. A signal for starting 22 is output (step S9). The batch division control device 6 drives the drive motor 83 of the small batch conveyor 8 in conjunction with the drive motor 22 of the discharge conveyor 2. By operating the discharge conveyor 2 and the small batch transport conveyor 8, the lower small batch SBT1 that does not contact the stopper member 31 passes below the stopper member 31 and is discharged downstream. At this time, the batch division control device 6 receives batch detection signals from the fourth sensor 65 (651, 652) and the fifth sensor 67, and confirms that the lower small batch SBT1 is discharged to the downstream side.

  Next, as shown in FIGS. 5 and 10, when the batch division control device 6 receives the batch detection signals from the sixth sensor 68 and the seventh sensor 69, the drive mechanism of each lifter device 5 (5A, 5B). 52 is actuated to raise the lifter member 51 to a position where it comes into contact with the lower surface of the upper small batch SBT2 (step S10). In this case, after the upstream lifter device 5B is activated, the downstream lifter device 5A is activated. The lifter member 51 supports the upper small batch SBT2 that contacts the stopper member 31 in cooperation with the lower small batch SBT1 that does not contact the stopper member 31, and thus the upper small batch that acts on the lower small batch SBT1. The load on the SBT 2 can be reduced. Therefore, it is possible to reduce the frictional forces f1 and f2 generated between the dividing boundary surfaces between the lower surface of the upper small batch SBT2 and the upper surface of the lower small batch SBT1. Further, the frictional force f2 that pulls the lower surface of the upper small batch SBT2 to the downstream side by the upper surface of the lower small batch SBT1, and the frictional force f3 generated between the lower surface of the upper small batch SBT2 and the upper surface of the lifter member 51. Can be countered by.

  Next, as shown in FIGS. 5 and 11, when the batch detection signal from the third sensor 64 is turned off, the batch division control device 6 uses the rear end portion of the lower small batch SBT 1 that does not come into contact with the stopper member 31. (Step S11), the drive motor 33 of the stopper lifting / lowering device 3 is actuated to raise the stopper member 31 further upward than the raised position corresponding to the division position of the batch BT ( Step S12). Thereby, when the upper small batch SBT2 falls on the discharge conveyor 2 and passes through the stopper member 31, the gap between the lower end of the stopper member 31 and the upper surface of the upper small batch SBT2 dropped on the discharge conveyor 2 is enlarged. Even if the front end side portion of the uppermost corrugated cardboard sheet DS of the upper small batch SBT2 is deformed upward due to warping, the possibility of interference between the corrugated cardboard sheet DS and the stopper member 31 can be reduced. it can.

  As shown in FIGS. 5, 11, and 12, when the batch detection signal from the third sensor 64 is turned off, the batch division control device 6 operates the drive mechanism 52 of the lifter device 5 to lift the lifter member. 51 is lowered to the standby position (step S13). Thereby, when the upper small batch SBT2 falls on the discharge conveyor 2, the lifter member 51 can descend and land on the discharge conveyor 2 while supporting the upper small batch SBT2 horizontally. Therefore, the position shift of the corrugated board sheet DS in the upper small batch SBT2 and the lower small batch SBT1 can be discharged to the downstream side while being further suppressed.

  Next, as shown in FIGS. 5, 13, and 14, the batch division control device 6 receives the batch detection signals from the fourth sensor 65 (651, 652) and the fifth sensor 67, and then receives the fourth sensor. When all the batch detection signals from 65 (651, 652) and the fifth sensor 67 are turned off, it is confirmed that the upper small batch SBT2 has passed through the stopper member 31 at the tip of the stopper member 31 (step S14). The two fourth sensors 65 (651, 652) are fixed to both side surfaces of the support 66 so that the distance in the left-right direction is larger than the width of the slot groove of the cardboard sheet DS as described above. ing. Therefore, even when the slot groove portion of the corrugated cardboard sheet DS passes through the irradiation position of the light beam from one sensor and the batch detection signal is turned off, the light beam from the other sensor is reflected on the corrugated cardboard sheet adjacent to the slot groove. The sensor detection signal is continuously output by irradiating the sheet surface. Therefore, by confirming that the batch detection signals from the two fourth sensors 65 (651, 652) are both turned off, the passage of the rear ends of the small batches SBT1, SBT2 is surely confirmed. Can do. Thereafter, the batch division control device 6 operates the drive motor 33 of the stopper lifting / lowering device 3 to move the stopper member 31 to the lowered position in order to correspond to the next batch BT (step S1).

  As shown in FIG. 5, the batch division control device 6 determines whether or not it is necessary to discharge the remaining sheets that are not to be divided (step S2), and if it is necessary to discharge the remaining sheets. Then, the drive motor 22 of the discharge conveyor 2 is operated (step S15), and the drive motor 33 of the stopper elevating device 3 is operated to move the stopper member 31 to the retracted position (step S16). Then, after confirming the completion of the discharge of the remaining sheets (step S17), the discharge conveyor 2 is stopped (step S18), and the process is terminated. By repeating the above operation for all the batch BTs to be divided, the division speed of the batch BT can be further increased with a simple mechanism. In addition, this batch division | segmentation apparatus 10 can also divide | segment the batch BT into arbitrary numbers not only when dividing into upper and lower halves.

<Operational effects in this embodiment>
As described above in detail, according to the batch dividing apparatus 10 for corrugated cardboard sheets according to the present embodiment, the discharge conveyor 2 that discharges the batch BT to the downstream side, and the batch disposed on the downstream side of the discharge conveyor 2. A stopper member 31 that contacts the front end of the BT and a stopper lifting device 3 that moves the stopper member 31 up and down are operated. First, the stopper lifting device 3 is operated. After that, when the front end of the batch BT and the stopper member 31 come into contact with each other, the discharge conveyor 2 is stopped and the stopper member 31 is raised to the rising position corresponding to the division position of the batch BT. After the conveyor 2 is operated and the lower small batch SBT1 that does not come into contact with the stopper member 31 is discharged to the downstream side, the stopper member 31 is contacted. Since the upper small batch SBT2 is discharged to the downstream side, the stopper member 31 lowered to the belt upper surface 211 of the discharge conveyor 2 is placed on the discharge conveyor and conveyed downstream. By contacting the front end, the batch BT can be aligned in advance in the vertical direction. In addition, after the stopper member 31 is brought into contact with the front end portion of the batch BT, the discharge conveyor 2 is operated in a state where the stopper member 31 is raised to the rising position corresponding to the division position of the batch BT. The batch BT thus formed can be divided into two small batches in the vertical direction into an upper small batch SBT2 that contacts the stopper member 31 and a lower small batch SBT1 that does not contact the stopper member 31. That is, the lower small batch SBT1 that does not contact the stopper member 31 is discharged to the downstream side in a state of being placed on the discharge conveyor 2, and the upper small batch SBT2 that contacts the stopper member 31 is When the small batch SBT1 passes through the stopper member 31, it falls onto the discharge conveyor 2 and is discharged downstream by the discharge conveyor 2.

  Therefore, the batch BT is divided in the vertical direction only by moving the stopper member 31 that regulates the front end portion of the batch BT placed on the discharge conveyor 2 and conveyed downstream, and the number of stacked sheets is increased. A small number of small batches SBT1 and SBT2 can be easily formed. In this case, since the stopper member 31 only regulates the front end portion of the batch BT, the interval between two or more batches BT continuously supplied to the batch dividing device 10 can be made as small as possible. Further, since the time for moving the stopper member 31 up and down is very small, loss time due to the movement of the stopper member 31 hardly occurs. Furthermore, since the upper small batch SBT2 falls onto the discharge conveyor 2 substantially simultaneously when the lower small batch SBT1 passes the stopper member 31, both small batches can be discharged continuously. Therefore, the dividing speed of the batch BT can be significantly improved as compared with the conventional case. Moreover, the drive mechanism 32 of the stopper raising / lowering device 3 which moves the stopper member 31 up and down and its control method are simple, and can reduce an installation cost and an equipment failure. As a result, according to the present embodiment, it is possible to provide the cardboard sheet batch splitting apparatus 10 that can further increase the batch BT split speed with a simple mechanism.

  Further, according to the present embodiment, the small batch pressing member 4 formed so as to be able to press the upper surfaces of the small batches SBT1 and SBT2 that pass through the stopper member is attached to the stopper member 31 on the downstream side of the stopper member. Therefore, when the small batches SBT1 and SBT2 pass through the stopper member 31, the small batch pressing member 4 presses the upper surface of the small batch on the downstream side of the stopper member 31, and thus passes through the stopper member 31. The cardboard sheets DS in the small batches SBT1 and SBT2 can be pressed onto the discharge conveyor 2 while being in close contact with each other, and the small batches SBT1 and SBT2 can be discharged downstream by the discharge conveyor 2 in an aligned state. Therefore, it is possible to reduce the positional deviation between the corrugated cardboard sheets DS in the small batches SBT1 and SBT2 discharged downstream by the discharge conveyor 2. Further, the lower small batch is generated by the frictional forces f1 and f2 generated between the boundary surfaces between the lower surface of the upper small batch SBT2 that contacts the stopper member 31 and the upper surface of the lower small batch SBT1 that does not contact the stopper member 31. The positional deviation in the front-rear direction of the cardboard sheet DS that is generated when the cardboard sheet DS on the upper surface side of the SBT 1 is pulled upstream can also be suppressed. As a result, there is no need to provide a rear partition body that regulates the positional deviation of the corrugated cardboard sheet DS and a support member that expands and contracts the length of the support surface in conjunction with the movement operation of the rear partition body, as in the conventional batch dividing device. By using a simple mechanism, the dividing speed of the batch BT can be further increased.

  In addition, according to the present embodiment, the small batch pressing member 4 includes the elastic roller body 41 formed to be rotatable from the upstream side to the downstream side. By pressing the upper surfaces of the small batches SBT1 and SBT2 passing through the stopper member 31 while rotating to the downstream side, the corrugated cardboard sheets DS in the small batch can be more closely contacted and discharged from the upstream side to the downstream side. Therefore, for example, it is possible to further suppress the positional deviation in the front-rear direction of the cardboard sheet DS that is generated when the uppermost cardboard sheet DS in the lower small batch SBT1 is pulled upstream by the upper small batch SBT2. As a result, the division speed of the batch BT can be further increased with a simple mechanism while further suppressing the positional deviation in the front-rear direction of the corrugated board sheet DS in the small batches SBT1 and SBT2 divided in the vertical direction.

  Further, according to the present embodiment, on the upstream side of the stopper member 31, the lifter that supports the upper small batch SBT <b> 2 that contacts the stopper member 31 in cooperation with the lower small batch SBT <b> 1 that does not contact the stopper member 31. Since the member 51 is provided, when the lower small batch SBT1 is discharged to the downstream side by the discharge conveyor 2, the load of the upper small batch SBT2 acting on the lower small batch SBT1 can be reduced. . Therefore, it is possible to reduce the frictional forces f1 and f2 generated between the dividing boundary surfaces between the lower surface of the upper small batch SBT2 and the upper surface of the lower small batch SBT1. Further, the frictional force f2 that pulls the lower surface of the upper small batch SBT2 to the downstream side by the upper surface of the lower small batch SBT1, and the frictional force f3 generated between the lower surface of the upper small batch SBT2 and the upper surface of the lifter member 51. Can be countered by. Further, when the upper small batch SBT2 falls on the discharge conveyor 2 by the rear end portion of the lower small batch SBT1 passing through the stopper member 31, the upper small batch SBT2 is lowered while the lifter member 51 supports it. And can be landed on the discharge conveyor 2. Therefore, the position shift of the corrugated board sheet DS in the upper small batch SBT2 and the lower small batch SBT1 can be further suppressed. In particular, when the upper small batch SBT2 falls on the discharge conveyor 2, the lifter member 51 supports the upper small batch SBT2 even if the restriction to the downstream side by the stopper member 31 on the upper small batch SBT2 does not act. By doing so, it is possible to effectively suppress the cardboard sheet DS on the lower surface side of the upper small batch SBT2 from being pulled downstream.

  Further, according to the present embodiment, the lifter member 51 attaches the rubber member to the support surface that supports the upper small batch SBT2 so as to increase the frictional force f3 in the horizontal direction with the corrugated cardboard sheet DS. The frictional force f3 generated between the boundary surface between the lower surface of the upper small batch SBT2 and the support surface of the lifter member 51 is caused by the frictional force f3 generated between the lower surface of the upper small batch SBT2 and the lower small batch. It is possible to further overcome the frictional force f2 generated between the division boundary surface with the upper surface of the SBT1. Therefore, the positional deviation in the front-rear direction of the corrugated cardboard sheet DS caused by the cardboard sheet DS on the lower surface side of the upper small batch SBT2 being pulled downstream can be further suppressed. As a result, the division speed of the batch BT can be further increased with a simple mechanism while further suppressing the positional deviation in the front-rear direction of the corrugated board sheet DS in the small batches SBT1 and SBT2 divided in the vertical direction.

  Further, according to the present embodiment, the stopper member 31 is lifted by the stopper lifting device 3 when the rear end portion of the lower small batch SBT1 that does not contact the stopper member passes through the stopper member or immediately before it. Since the upper small batch SBT2 falls on the discharge conveyor 2 and passes through the stopper member 31, the upper portion of the stopper member 31 and the upper portion dropped on the discharge conveyor 2 are featured. The gap with the upper surface of the small batch SBT2 can be enlarged. Therefore, when the upper small batch SBT2 passes through the stopper member 31, even if the front end side portion of the uppermost corrugated cardboard sheet DS is deformed upward by warpage, the corrugated cardboard sheet DS and the stopper member 31 interfere with each other. Fear can be reduced. As a result, the division speed of the batch BT can be further increased with a simple mechanism while preventing the cardboard sheet DS from being clogged in the small batch divided vertically.

  According to the present embodiment, the upstream side of the stopper member 31 includes the measuring device 61 that measures the thickness of the batch BT placed on the discharge conveyor 2 and in contact with the stopper member 31. Based on the thickness dimension of the batch BT measured by the device 61, the amount of movement by which the stopper elevating device 3 moves the stopper member 31 from the lowered position to the raised position is corrected, and the raised position of the stopper member 31 is divided into the batch BT. Since the position is adapted to the position, the number of stacked small batches SBT1 and SBT2 to be divided can be maintained constant even if the thickness dimension of the batch BT varies somewhat. A pressure roller 72 that presses from above is provided in the vicinity of the location where the thickness dimension of the batch BT is measured. When the thickness of the batch BT is measured by the measuring device 61, the cardboard sheets DS are brought into close contact with each other by the pressure roller 72. Let me measure. Therefore, the thickness of the batch BT can be measured in a state where the cardboard sheets DS of the batch BT are in close contact with each other, and the measurement accuracy can be stabilized. When a plurality of stopper members 31 are provided in the width direction (left-right direction) of the batch BT, the thickness of the batch BT is measured at a position adjacent to each stopper member 31 (31A, 31B). Based on the dimensions, the amount of movement of each stopper member 31 (31A, 31B) from the lowered position to the raised position is corrected. Therefore, even when the thickness of the batch BT differs in the left-right direction, each stopper member 31 (31A, 31B) can be made to correspond to the division position of the batch BT.

<Modification>
It goes without saying that the above-described embodiment can be variously changed without departing from the gist of the present invention. For example, in the present embodiment, when the batch detection signal from the third sensor 64 is turned off, the batch split control device 6 causes the rear end portion of the lower small batch SBT1 that does not contact the stopper member 31 to pass through the stopper member 31. (Step S11), the drive motor 33 of the stopper lifting / lowering device 3 is operated to raise the stopper member 31 further upward than the raised position corresponding to the division position of the batch BT (step S12). The member 31 may be further raised from the division position by the stopper lifting device 3 when the rear end portion of the lower small batch SBT1 that does not come into contact with the stopper member 31 passes through the stopper member 31 or just before that. Specifically, the timing at which the stopper member 31 is raised further upward than the raised position corresponding to the division position of the batch BT may be before the batch detection signal from the third sensor 64 is turned off. For example, a batch detection signal from the second sensor 63 is received, and a signal for decelerating the drive motor 22 of the discharge conveyor 2 is output. At the same time, the drive motor 33 of the stopper lifting / lowering device 3 is operated, and the stopper member 31 is divided into batch BT positions. You may raise further upward from the raising position corresponding to.

  The present invention is a corrugated cardboard batch splitting device for dividing a batch in which a plurality of corrugated cardboard sheets produced in a corrugated cardboard box making machine are vertically stacked to form a small batch with a small number of stacked sheets. Available.

DESCRIPTION OF SYMBOLS 1 Corrugated sheet box making machine 2 Discharge conveyor 3 Stopper raising / lowering device 4 Small batch pressing member 5 Lifter device 6 Batch division control device 7 Batch upper control device 10 Batch division device 21 Belt 31 Stopper member 41 Elastic roller body 51 Lifter member 61 Measuring device 72 Pressing roller 211 Belt upper surface BT Batch DS Corrugated cardboard sheet SBT1 Lower small batch SBT2 Upper small batch

Claims (7)

A cardboard sheet batch splitting device for dividing a batch in which a plurality of corrugated cardboard sheets produced in a corrugated board box making machine are vertically stacked to form a small batch with a small number of stacked sheets,
A discharge conveyor for discharging the batch to the downstream side, a stopper member disposed on the downstream side of the discharge conveyor and in contact with the front end of the batch, and a stopper lifting device for moving the stopper member up and down,
By operating the stopper lifting device, first, the stopper member is lowered to the upper surface of the belt of the discharge conveyor, and then the discharge conveyor is stopped when the front end portion of the batch comes into contact with the stopper member. The stopper member is raised to a raised position corresponding to the batch division position, and then the discharge conveyor is operated to discharge the lower small batch that does not contact the stopper member to the downstream side, and then the stopper member. A batch dividing apparatus for corrugated cardboard sheets, wherein an upper small batch in contact with the sheet is discharged downstream. In the batch dividing apparatus for corrugated cardboard sheets according to claim 1,
A batch dividing apparatus for corrugated cardboard sheets, wherein a small batch pressing member formed so as to be able to press an upper surface of a small batch passing through the stopper member is mounted on the downstream side of the stopper member. In the batch dividing apparatus for cardboard sheets according to claim 2,
The said small batch press member is provided with the elastic roller body formed so that rotation from the upstream side to the downstream side was carried out, The batch division apparatus of the cardboard sheet | seat characterized by the above-mentioned. In the batch dividing device for corrugated cardboard sheets according to any one of claims 1 to 3,
A cardboard sheet comprising a lifter member on the upstream side of the stopper member for supporting an upper small batch in contact with the stopper member in cooperation with a lower small batch not in contact with the stopper member. Batch splitting device. In the batch dividing apparatus for cardboard sheets according to claim 4,
The said lifter member is formed so that the support surface which supports the said upper small batch may increase the frictional force to a horizontal direction with a corrugated cardboard sheet, The batch dividing apparatus of the corrugated cardboard sheet | seat characterized by the above-mentioned. In the batch dividing apparatus for corrugated cardboard sheets according to any one of claims 1 to 5,
The stopper member is lifted further upward from the raised position by the stopper lifting device when the rear end portion of the lower small batch that does not come into contact with the stopper member passes through the stopper member or immediately before the stopper member. A cardboard sheet batch splitting device. In the batch dividing apparatus for cardboard sheets according to any one of claims 1 to 6,
An upstream side of the stopper member is provided with a measuring device for measuring the thickness of the batch placed on the discharge conveyor and in contact with the stopper member, and the thickness dimension of the batch measured by the measuring device is set. Based on the batch division of the corrugated cardboard sheet, the amount of movement of the stopper member from the lowered position to the raised position is corrected by the stopper lifting device, and the raised position of the stopper member is adapted to the divided position. apparatus.

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