JP7412755B2 - Corrugated sheet batch dividing device, counter ejector including batch dividing device, and corrugated sheet batch dividing method - Google Patents

Description

The present invention relates to a corrugated sheet batch dividing device, a counter ejector including the batch dividing device, and a corrugated sheet batch dividing method, and more particularly, the present invention relates to a corrugated sheet box making machine that divides stacked corrugated sheet batches in the vertical direction. The present invention relates to a corrugated cardboard sheet batch dividing apparatus that forms small batches with a small number of laminated sheets, a counter ejector including the batch dividing apparatus, and a corrugated sheet batch dividing method.

BACKGROUND ART Conventionally, a corrugated sheet batch dividing apparatus performs a process of dividing a corrugated sheet batch formed by a corrugated sheet box making machine into two small batches. A corrugated board sheet batch dividing apparatus is disclosed in, for example, Patent Document 1.

That is, as shown in FIGS. 22 and 23, the corrugated sheet batch dividing apparatus disclosed in Patent Document 1 divides a batch in which a plurality of corrugated sheets DS formed in a corrugated sheet box making machine are stacked in the vertical direction. A corrugated sheet batch dividing apparatus 100 that divides BT in the vertical direction to form small batches of SBT with a small number of laminated sheets, which includes a discharge conveyor 101 that discharges the batch BT to the downstream side, and a downstream side of the discharge conveyor 101. It includes a stopper member 102 that is disposed above and comes into contact with the front end of the batch BT, and a stopper lifting device 103 that moves the stopper member 102 up and down.

Then, the stopper lifting device 103 is operated to first lower the stopper member 102 to the upper surface of the belt of the discharge conveyor 101, and then, when the front end of the batch BT and the stopper member 102 come into contact, the discharge conveyor 101 is stopped. to raise the stopper member 102 to the raised position KP corresponding to the division position BP of the batch BT, and then operate the discharge conveyor 101 to discharge the lower small batch SBT1 that does not contact the stopper member 102 to the downstream side. From there, the upper small batch SBT2 in contact with the stopper member 102 is discharged to the downstream side.

In the batch dividing apparatus 100, the stopper member 102 that has descended to the upper surface of the belt of the discharge conveyor 101 comes into contact with the front end of the batch BT placed on the discharge conveyor 101 and conveyed downstream, so that the batch BT is moved in the vertical direction. can be aligned. Further, after the stopper member 102 is brought into contact with the front end of the batch BT, the discharge conveyor 101 is operated while being raised to the raised position KP corresponding to the dividing position BP of the batch BT. The batches BT aligned in the vertical direction can be divided into two small batches SBT in the vertical direction: an upper small batch SBT2 that contacts the stopper member 102 and a lower small batch SBT1 that does not contact the stopper member 102. .

JP 2017-1245 Publication

However, the amount of moisture remaining on the top and bottom surfaces of the corrugated sheet DS may differ due to the pasting of the corrugated sheet DS in the corrugating process, which is a pre-process of the box manufacturing process. The corrugated cardboard sheet DS was sometimes slightly warped in the vertical direction. When the corrugated sheet DS is warped, the frictional force between it and other corrugated sheets DS adjacent to each other on the upper and lower sides becomes smaller, and the batch BT is divided between the lower corrugated sheets that do not come into contact with the stopper member 102. sometimes occurred.

That is, in the corrugated sheet batch dividing apparatus 100 of Patent Document 1, the batch BT is not appropriately divided at the dividing position BP corresponding to the raised position KP of the stopper member 102, and the corrugated sheets DS are stacked below the dividing position. There has been a problem in that the batch BT is rarely divided between the two.

The present invention has been made to solve the above problems, and includes a corrugated sheet batch dividing device and a batch dividing device that can stably divide batches of vertically stacked corrugated sheets at predetermined dividing positions. It is an object of the present invention to provide a counter ejector and a method for batch dividing corrugated cardboard sheets.

In order to achieve the above object, a corrugated sheet batch dividing device, a counter ejector including the batch dividing device, and a corrugated sheet batch dividing method according to the present invention have the following configuration.
(1) A batch of corrugated cardboard sheets in which a batch of multiple corrugated sheets stacked vertically in a box made by a corrugated sheet box making machine is divided vertically at a predetermined dividing position to form small batches with a small number of stacked sheets. A dividing device,
a discharge conveyor for discharging the batch to the downstream side; a stopper member arranged above the downstream side of the discharge conveyor and abutting the front end of the batch; a stopper lifting device for vertically moving the stopper member; A pressing member that presses the upper surface of the batch downward on the upstream side, and a pressing member lifting device that moves the pressing member up and down,
The pressing member lifts and lowers the front end of the batch that is moved downstream at a predetermined speed by the discharge conveyor and the stopper member that has been lowered to a lowered position corresponding to the dividing position by operating the stopper lifting device. The device is operated so that the pressing member contacts the upper surface of the batch in a pressed state, and separates the batch into a lower small batch that does not contact the stopper member and an upper small batch that contacts the stopper member. It is characterized by being divided into.

According to the above feature, the front end of the batch is brought into contact with the stopper member while the pressing member presses the top surface of the batch on the upstream side of the stopper member, so that the cardboard sheet of the batch is slightly warped in the vertical direction. Even if there is, the warp can be corrected before dividing, and the vertically adjacent corrugated sheets can be brought into substantially uniform contact with each other, thereby reducing variations in the frictional force between the corrugated sheets. Therefore, when the front end of the batch is brought into contact with the stopper member, slipping between the corrugated sheets will occur stably at the boundary immediately below the stopper member that has been lowered to the lowered position corresponding to the predetermined dividing position. become.

In addition, a pressing member presses the front end of the batch, which is moving downstream at a predetermined speed by the discharge conveyor, to a stopper member that has been lowered to a lowered position corresponding to a predetermined dividing position, and presses the top surface of the batch on the upstream side of the stopper member. By bringing them into contact with each other while being pressed, stable sliding occurs between the corrugated sheets at the boundary immediately below the stopper member that has been lowered to the lowered position corresponding to the predetermined dividing position, and the sheets are laminated below the stopper member. Due to the law of inertia, the corrugated cardboard sheet can be moved downstream at the same speed. As a result, a batch in which multiple corrugated cardboard sheets are stacked vertically is stably divided into a lower batch that does not contact the stopper member and an upper batch that contacts the stopper member at a predetermined dividing position. can do.

Therefore, according to the present invention, it is possible to provide a corrugated sheet batch dividing apparatus that can stably divide a batch of corrugated cardboard sheets stacked vertically at a predetermined dividing position.

(2) In the corrugated sheet batch dividing apparatus described in (1),
A measuring device for measuring the thickness of the batch is provided upstream of the stopper member,
The stopper lifting device is characterized in that it adjusts the lowering position of the stopper member based on the thickness of the batch measured by the measuring device.

According to the above feature, even if there is variation in the thickness of the batch, the lowering position of the stopper member can be adjusted according to the thickness of the batch measured on the upstream side of the stopper member. Therefore, the batch can be divided more stably at the boundary immediately below the stopper member that has been lowered to the lowered position corresponding to the thickness of the batch.

(3) In the corrugated sheet batch dividing apparatus described in (2),
The measuring device measures the thickness of only the first batch to be divided during production of the same order, and the stopper lifting device measures the thickness of the first batch to be divided based on the thickness of the first batch to be divided. A lowering position of the stopper member is set for a batch to be divided and a batch to be divided into the second and subsequent batches.

According to the above feature, since the thickness of the batch is only measured at the start of production of the same order, time loss associated with measurement can be minimized. In addition, the lowering position of the stopper member for the first batch to be divided and the second and subsequent batches is set based on the thickness of the first batch to be divided, so it takes less time to adjust the lowering position of the stopper member. Loss can also be minimized. Therefore, it is possible to stably divide the batch at predetermined dividing positions while reducing each time loss and increasing the productivity of the batch dividing apparatus.

(4) In the corrugated sheet batch dividing apparatus described in any one of (1) to (3),
The discharge conveyor is characterized in that it temporarily stops movement of the batch at a stop position upstream of the stopper member, and then moves the batch again.

According to the above feature, after the movement of the batch is temporarily stopped on the upstream side of the stopper member, while the batch is being moved again, the stopper lifting device is operated to move the stopper member to the appropriate lowered position corresponding to the predetermined dividing position. The pressing member can be lowered, and the pressing member can be moved to an appropriate pressing height by operating the pressing member elevating device. Therefore, batches can be stably divided at even more accurate dividing positions.

(5) In the corrugated sheet batch dividing apparatus described in (4),
The discharge conveyor is characterized in that during production of the same order, the batch is temporarily stopped at the stop position for only the first batch to be divided, and then the batch is moved again.

According to the above feature, since the movement of batches is only temporarily stopped when starting production of the same order, it is possible to minimize the time loss associated with the temporary stop. Therefore, the batch can be stably divided at predetermined dividing positions while reducing time loss and increasing the productivity of the batch dividing apparatus.

(6) In the corrugated sheet batch dividing apparatus described in any one of (1) to (5),
The pressing member elevating device is configured to raise and lower the upper surface of the batch with the pressing member so that, when dividing the batch, the thickness of the divided batch corresponds to the lowered position of the stopper member. It is characterized by being pressed.

According to the above feature, even if the thickness of the batch changes, the pressing member presses the top surface of the batch so that the thickness corresponds to the lowered position of the stopper member, so that the dividing position of the batch is kept at a constant position. can be maintained. Therefore, batches can be divided more stably at predetermined division positions.

(7) In the corrugated sheet batch dividing apparatus described in any one of (1) to (6),
The stopper member is characterized in that it includes a vibration mechanism that vibrates the stopper member.

According to the above feature, the stopper member vibrates to correct the misalignment between the corrugated sheets caused by the rebound of the batch that has come into contact with the stopper member, and effectively corrects the misalignment of the corrugated sheets in the small batch after division. can be avoided. This makes it possible to increase the speed at which batches are moved by the discharge conveyor, thereby further increasing the productivity of the batch dividing device.

(8) A batch of corrugated cardboard sheets in which a batch of multiple corrugated cardboard sheets stacked vertically in a box made by a corrugated sheet box making machine is divided vertically at a predetermined dividing position to form small batches with a small number of stacked sheets. A counter ejector including a splitting device,
A batch forming device is provided upstream of the batch dividing device,
The batch forming device includes a ledge that can move forward and backward in a horizontal direction in order to separate the corrugated cardboard sheets stacked in a predetermined storage area to form a batch of a predetermined number of sheets, and a ledge located below the predetermined storage area. a delivery conveyor for sending out the batch in the delivery direction on which the batch is placed and loaded with a predetermined number of corrugated sheets; It has an elevator that moves up and down for transportation,
The batch dividing device includes a discharge conveyor that discharges the batch to the downstream side, a stopper member that is disposed above the discharge conveyor on the downstream side and comes into contact with the front end of the batch, and a stopper lifting device that moves the stopper member up and down. and a pressing member that presses the upper surface of the batch downward on the upstream side of the stopper member, and a pressing member lifting device that moves the pressing member up and down,
The pressing member lifts and lowers the front end of the batch that is moved downstream at a predetermined speed by the discharge conveyor and the stopper member that has been lowered to a lowered position corresponding to the dividing position by operating the stopper lifting device. The apparatus is operated so that the pressing member contacts the upper surface of the batch in a pressed state, and separates the batch into a lower small batch that does not contact the stopper member and an upper small batch that contacts the stopper member. It is characterized by being divided into.

According to the above feature, by providing the batch forming device upstream of the batch dividing device, it is possible to form batches with different numbers of sheets while increasing productivity. For example, when producing small batches with a small number of sheets using a batch forming device, there is a lot of time loss due to elevator movement, etc., which slows down the production speed. By dividing the sheet into small batches with a small number of sheets using a downstream batch dividing device, the time loss associated with the vertical movement of the elevator, etc. is reduced, and the production speed is increased.

In addition, in the batch dividing device, the front end of the batch is brought into contact with the stopper member while the pressing member presses the top surface of the batch on the upstream side of the stopper member, so that the cardboard sheet of the batch is slightly warped in the vertical direction. Even if there is, the warpage can be corrected before dividing, and the vertically adjacent corrugated sheets can be brought into substantially uniform contact with each other, thereby reducing variations in the frictional force between the corrugated sheets. Therefore, when the front end of the batch is brought into contact with the stopper member, slippage between the corrugated sheets will occur stably at the boundary immediately below the stopper member.

In addition, a pressing member presses the front end of the batch, which is moving downstream at a predetermined speed by the discharge conveyor, to a stopper member that has been lowered to a lowered position corresponding to a predetermined dividing position, and presses the top surface of the batch on the upstream side of the stopper member. By bringing them into contact with each other while being pressed, stable sliding occurs between the corrugated sheets at the boundary immediately below the stopper member that has been lowered to the lowered position corresponding to the predetermined dividing position, and the sheets are laminated below the stopper member. Due to the law of inertia, the corrugated cardboard sheet can be moved downstream at the same speed. As a result, a batch in which multiple corrugated cardboard sheets are stacked vertically is stably divided into a lower batch that does not contact the stopper member and an upper batch that contacts the stopper member at a predetermined dividing position. can do.

Therefore, according to the present invention, it is possible to provide a counter ejector including a corrugated sheet batch dividing device that can stably divide batches of corrugated cardboard sheets stacked vertically at predetermined dividing positions.

(9) A batch of corrugated cardboard sheets in which a batch of multiple corrugated sheets stacked vertically in a box made by a corrugated sheet box making machine is divided vertically at a predetermined dividing position to form small batches with a small number of stacked sheets. A dividing method,
a batch forming step of forming the batch;
a sending step of sending out the batch formed in the batch forming step by a sending conveyor to a discharge conveyor that moves the batch downstream;
a positioning step of positioning a stopper member, which is disposed above the downstream side of the discharge conveyor and divides the batch conveyed in the conveyance step, to a lowered position corresponding to the dividing position;
The batch that is sent to the discharge conveyor in the sending step and is moved downstream at a predetermined speed by the discharge conveyor is brought into contact with the stopper member positioned at the lowered position, and is separated into two small batches, upper and lower. a batch splitting step to split into
When dividing the batch in the batch dividing step, the pressing member is used to divide the batch so that the thickness of the divided batch corresponds to the lowered position of the stopper member positioned in the positioning step. The method is characterized by comprising a batch pressing step of pressing the upper surface of the batch.

According to the above feature, the front end of the batch is brought into contact with the stopper member while the pressing member presses the top surface of the batch on the upstream side of the stopper member, so that the cardboard sheet of the batch is slightly warped in the vertical direction. Even if there is, the warp can be corrected before dividing, and the vertically adjacent corrugated sheets can be brought into substantially uniform contact with each other, thereby reducing variations in the frictional force between the corrugated sheets. Therefore, when the front end of the batch is brought into contact with the stopper member, slippage between the corrugated sheets will occur stably at the boundary immediately below the stopper member.

In addition, a pressing member presses the front end of the batch, which is moving downstream at a predetermined speed by the discharge conveyor, to a stopper member that has been lowered to a lowered position corresponding to a predetermined dividing position, and presses the top surface of the batch on the upstream side of the stopper member. By bringing them into contact with each other while being pressed, stable sliding occurs between the corrugated sheets at the boundary immediately below the stopper member that has been lowered to the lowered position corresponding to the predetermined dividing position, and the sheets are laminated below the stopper member. Due to the law of inertia, the corrugated cardboard sheet can be moved downstream at the same speed. As a result, a batch in which multiple corrugated cardboard sheets are stacked vertically is stably divided into a lower batch that does not contact the stopper member and an upper batch that contacts the stopper member at a predetermined dividing position. can do.

Furthermore, according to the above feature, even if the thickness of the batch changes, the pressing member presses the top surface of the batch so that the thickness corresponds to the lowered position of the stopper member, so that the dividing position of the batch is kept constant. can be maintained in this position. Therefore, batches can be divided more stably at predetermined division positions.

Therefore, according to the present invention, it is possible to provide a method for dividing a batch of corrugated cardboard sheets that can stably divide a batch of corrugated cardboard sheets stacked one above the other at a predetermined dividing position.

(10) In the corrugated sheet batch division method described in (9),
The batch dividing step includes a temporary stopping step of temporarily stopping the movement of the batch at a stop position upstream of the stopper member, and then moving the batch again.

According to the above feature, after the movement of the batch is temporarily stopped upstream of the stopper member, the stopper member can be lowered to an appropriate lowering position corresponding to a predetermined dividing position while moving the batch again. , the pressing member can be moved to an appropriate pressing height. Therefore, batches can be stably divided at even more accurate dividing positions.

(11) In the corrugated sheet batch division method described in (9) or (10),
In the batch dividing step, a lifter member is raised above the discharge conveyor on the upstream side of the stopper member, and of the two small batches, the upper small batch that comes into contact with the stopper member is moved to the stopper member. It is characterized by comprising a small batch support step that cooperates with and supports the lower small batches that are not in contact with each other.

According to the above feature, since the lifter member supports the upper small batch on the upstream side of the lower small batch, the load on the upper small batch acting on the lower small batch can be reduced. Therefore, it is possible to reduce the frictional force generated at the dividing boundary between the lower surface of the upper small batch and the upper surface of the lower small batch. Therefore, it is possible to suppress the displacement of the corrugated paperboard sheet on the upper surface of the lower small batch, and it is possible to stably divide the batch.

According to the present invention, there is provided a corrugated sheet batch dividing device capable of stably dividing batches of vertically stacked corrugated sheets at predetermined dividing positions, a counter ejector including the batch dividing device, and a corrugated sheet batch dividing method. be able to.

1 is an overall view of a corrugated sheet box making machine including a corrugated sheet batch dividing device and a counter ejector including the batch dividing device according to the present embodiment. FIG. 2 is a perspective view of the corrugated sheet batch dividing apparatus shown in FIG. 1; FIG. 3 is a side view of the corrugated sheet batch dividing apparatus shown in FIG. 2; FIG. 4 is a sectional view of a main part of the corrugated board sheet batch dividing apparatus shown in FIG. 3; 4 is a block diagram of the electrical configuration of the corrugated sheet batch dividing apparatus shown in FIG. 3. FIG. 4 is a main control flowchart of the first embodiment of the corrugated sheet batch dividing apparatus shown in FIG. 3. FIG. FIG. 7 is a detailed flowchart of the batch division process shown in FIG. 6; 7 is a detailed flowchart of the remaining sheet discharge process shown in FIG. 6. FIG. FIG. 4 is a main control flowchart of a second embodiment of the corrugated sheet batch dividing apparatus shown in FIG. 3; 10 is a detailed flowchart of the batch division process shown in FIG. 9. FIG. FIG. 4 is a main control flowchart of a third embodiment of the corrugated sheet batch dividing apparatus shown in FIG. 3; FIG. 12 is a detailed flowchart of the first batch division process shown in FIG. 11; FIG. 12 is a detailed flowchart of the second and subsequent batch division processing shown in FIG. 11; FIG. 4 is a cross-sectional view for explaining a batch dividing operation in the corrugated cardboard sheet batch dividing apparatus shown in FIG. 3; FIG. 4 is a cross-sectional view for explaining the lifting operation of a press roller and a lifter member in the corrugated paperboard sheet batch dividing apparatus shown in FIG. 3; FIG. 4 is a cross-sectional view illustrating the raising of a stopper member and the lowering of a lifter member in the corrugated sheet batch dividing apparatus shown in FIG. 3; FIG. 4 is a cross-sectional view for explaining the downward movement of the stopper member in the corrugated sheet batch dividing apparatus shown in FIG. 3; FIG. 4 is a cross-sectional view for explaining a temporary stopping operation of the discharge conveyor in the corrugated cardboard sheet batch dividing apparatus shown in FIG. 3; FIG. 2 is a cross-sectional view for explaining the batch forming operation in the batch forming apparatus shown in FIG. 1. FIG. FIG. 3 is a flowchart of a corrugated cardboard sheet batch division method according to the present embodiment. FIG. 4 is a sectional view of a modification of the stopper member in the corrugated sheet batch dividing apparatus shown in FIG. 3, in which (A) shows a sectional view of a first modification in which the stopper member is vibrated in the front-rear direction, and (B) shows the stopper member. A sectional view of a second modification example in which the member is vibrated in the vertical direction is shown. FIG. 2 is a sectional view of a main part of the corrugated cardboard sheet batch dividing apparatus described in Patent Document 1 before batch division. FIG. 23 is a sectional view of a main part of the corrugated cardboard sheet batch dividing apparatus shown in FIG. 22 during batch division.

Next, a corrugated sheet batch dividing apparatus according to a first embodiment of the present invention will be described in detail with reference to the drawings. Here, the overall configuration of a corrugated sheet box making machine including a batch dividing device will be briefly explained, and then the detailed configuration of this batch dividing device will be explained. Furthermore, a method of controlling the present batch dividing apparatus will be explained in detail.

<Overall configuration of corrugated sheet box making machine>
First, the 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 sheet box making machine including a corrugated sheet batch dividing apparatus and a counter ejector including the batch dividing apparatus according to the present embodiment. Note that the directions of the arrows shown in the drawings indicate the up-down direction and front-back direction of the device. Here, the front means downstream, and the rear means upstream. The same applies to other drawings.

As shown in FIG. 1, the corrugated sheet box making machine 1 includes a sheet feeding device 11, a printing device 12, a creaser slotter 13, a folder gluer 14, a batch forming device 15, and a batch dividing device 10. They are arranged in order from the upstream side to the downstream side. Each device is controlled to be automatically operable by a corrugated sheet box making machine control and management device 18. A binding machine 17 is disposed downstream of the batch dividing device 10.

Note that the counter ejector 20 consisting of the batch forming device 15 and the batch dividing device 10 is controlled to be automatically operable by a counter ejector control device 181 that receives a command from the corrugated sheet box making machine control management device 18. The apparatus 10 is controlled to be capable of automatic operation by a batch division control device 182 that receives instructions from the corrugated sheet box making machine control and management device 18.

The sheet feeding device 11 is a device that feeds the flat cardboard sheets SH stacked on the table 111 to the downstream side one by one using a kicker 112. The printing device 12 is a device that prints on the surface of the corrugated cardboard sheet SH, and here includes a plurality of printing roll units 121 and 122 to enable multicolor printing. The creaser slotter 13 is a device that includes a creasing roll 131 and a slotter 132, and performs creasing and grooving on the corrugated cardboard sheet SH to form a seam allowance.

The folder gluer 14 includes a guide rail 141, a conveyor 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 conveyor belt 142. In the meantime, adhesive is applied to the seam by the adhesive application roll 143, the corrugated cardboard sheet SH is folded by the folding bar 144, and the seam is glued by the folding belt 145, thereby forming a box-shaped folded state. This is a device for producing corrugated cardboard sheets DS.

The batch forming device 15 uses a front contact plate 154 that comes into contact with the front end of the corrugated cardboard sheet DS supplied from the inlet roll 157, a straightening plate 155 that comes into contact with the rear end of the corrugated cardboard sheet DS, and vertically moves the corrugated cardboard sheets DS to be stacked. A main ledge 151 that movably supports, a pair of auxiliary ledges 156 that receives a batch BT of a predetermined number of stacked corrugated cardboard sheets DS from the main ledge 151, an elevator 153 that receives the batch BT on the auxiliary ledge and moves it downward, and an elevator. A delivery conveyor 152 and an upper conveyor 158 are arranged at the lowered position of the elevator 153 and send out the batch BT on the elevator to the downstream side. It is a device that sends out to the side.

That is, the batch forming device 15 separates the corrugated cardboard sheets DS stacked in a predetermined storage area partitioned by the front contact plate 154 and the straightening plate 155 and forms batches BT of a predetermined number of sheets in the horizontal direction. A main ledge 151 that can move forward and backward, a delivery conveyor 152 that is arranged below a predetermined storage area and that sends out a batch BT loaded with a predetermined number of corrugated sheets DS in the delivery direction; The batch BT is placed thereon and has an elevator 153 that moves up and down in order to convey the batch BT from a predetermined storage area to the delivery conveyor 152.

The batch dividing device 10 includes a discharge conveyor 2, a stopper lifting device 3, and a pressing member lifting device 7A, and divides a batch BT stacked a predetermined number of sheets in the vertical direction to form small batches SBT1 and SBT2 with a small number of sheets stacked. It is a device that does The batch dividing device 10 is activated when the length of the corrugated cardboard sheet DS in the longitudinal direction 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 a device that binds the small batches SBT1 and SBT2 discharged from the batch dividing device 10 with a belt in order to transport them to a subsequent process.

<Configuration of batch dividing device>
Next, the configuration of this batch dividing apparatus will be explained using FIGS. 2 to 5. FIG. 2 shows a perspective view of the corrugated sheet batch dividing apparatus shown in FIG. 1. FIG. 3 shows a side view of the corrugated sheet batch dividing apparatus shown in FIG. 2. FIG. 4 shows a cross-sectional view of essential parts of the corrugated sheet batch dividing apparatus shown in FIG. 3. FIG. 5 shows a block diagram of the electrical configuration of the corrugated sheet batch dividing apparatus shown in FIG. 3.

As shown in FIGS. 2 to 5, the batch dividing device 10 includes a discharge conveyor 2 that discharges the batch BT to the downstream side, and a conveyor 2 that is disposed above the discharge conveyor 2 on the downstream side and comes into contact with the front end of the batch BT. A stopper member 31, a stopper lifting device 3 that moves the stopper member 31 up and down, and a pressing roller 72 that presses the upper surface of the batch BT downward on the upstream side of the stopper member 31 (corresponding to the "pressing member" in claim 1). and a pressing member elevating device 7A that moves the pressing roller 72 up and down. The batch dividing device 10 includes a small batch pressing member 4 that presses the upper surface of the divided small batch SBT downward on the downstream side of the stopper member 31, and a small batch conveyor that transports the small batch SBT to the downstream side. It includes a conveyor 8 and a device main body 9.

The device main body 9 includes a pair of side frames 91, 91 extending in the front-rear direction at the left and right ends and standing upright in the vertical direction, and a pair of side frames 91, 91 extending horizontally in the front-rear direction on the inner walls of the side frames 91, 91. A pair of main frame members 92, 92, and an auxiliary frame member 93 connected to the front end portions of both main frame members 92, 92 and extending in the left-right direction. A bracket 94 is formed at the front end of the side frames 91, 91 to which a fifth sensor 67, which will be described later, is mounted. A frame drive mechanism 714 (a drive mechanism that moves the main frame members 92, 92 up and down via a chain member 713) that moves the main frame members 92, 92 up and down is attached to the side frames 91, 91, respectively. The vertical positions of the main frame members 92, 92 and the auxiliary frame member 93 can be adjusted depending on the type of batch BT to be supplied. Chain member 713 is connected to the front and rear ends of main frame members 92, 92, respectively.

A discharge conveyor 2 that conveys the batch BT from the upstream side to the downstream side is fixedly installed horizontally between the pair of side frames 91, 91. A plurality of belts 21, 21, 21 are wound around the discharge conveyor 2 at a predetermined gap in the left-right direction. The belt 21 of the discharge conveyor 2 extends from near the front end 911 of the side frame body 91 to a position adjacent to the above-mentioned delivery conveyor 152 (see FIG. 1), and the top surface heights of the belts of both conveyors are approximately the same. . The discharge conveyor 2 includes a drive motor 22 whose speed can be controlled, and conveys 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 (downstream side) of the discharge conveyor 2.

A stopper lifting device 3 is disposed above the discharge conveyor 2 on the downstream side. Here, two stopper elevating devices 3 (3A, 3B) are fixed to the downstream side surface of the auxiliary frame member 93 at the center in the left-right direction in a vertically standing state with a predetermined interval. There is. The stopper elevating device 3 includes a stopper member 31 that comes into contact with 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 a 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 any position in the vertical direction.

The stopper member 31 horizontally connects a vertical wall portion 311 formed vertically on the upstream side, a vertical wall portion 313 formed vertically on the downstream side, and the lower ends of both vertical wall portions 311 and 313. It has a horizontal wall portion 312, and has a generally U-shaped cross section that is open at the top. The vertical wall portion 311 on the upstream side is formed with a contact surface that contacts the front end of the batch BT, and the contact surface is formed in a rectangular shape having a long side equal to or larger 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 be adhered to the contact surface. Further, it is preferable that the lower end of the fluororesin member 311J is formed to slightly protrude downward from the lower surface of the horizontal wall portion 312. Note that the vertical wall portion 313 on the downstream side is fastened to a movable body (nut portion) 321 of the drive mechanism 32.

A small batch pressing member 4 is attached to the stopper member 31 on the downstream side of the stopper member 31, and is formed to be able to press the upper surface of the small batches SBT1 and SBT2 passing through the stopper member. The small batch pressing member 4 includes a substantially cylindrical elastic roller body 41 extending in the width direction, and a support 42 that pivotally supports the elastic roller body 41 and is fixed to the vertical wall portion 313 on the downstream side of the stopper member 31. It is equipped with The elastic roller body 41 is formed of a sponge-like member, and presses the upper surface of the small batches SBT1 and SBT2 passing through the stopper member 31 while being elastically deformed. 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 projects downward from the lower end of the horizontal wall portion 312 of the stopper member 31. With the outer peripheral surface of the elastic roller body 41 pressing against the upper surfaces of the small batches SBT1 and SBT2, a minute gap is formed in the vertical direction between the horizontal wall portion 312 of the stopper member 31 and the small batches SBT1 and SBT2 ( (see Figure 4).

A lifter device 5 is fixed to the device main body 9 in the left-right gap 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 and the rear end of the discharge conveyor 2, depending on the longitudinal length of the batch BT to be divided. Here, there are provided a downstream lifter device 5A that can handle a batch BT with a minimum front-to-back batch length, and an upstream lifter device 5B that can handle a batch BT with a maximum front-to-back batch length. The lifter device 5 (5A, 5B) includes a lifter member 51 that comes into contact with 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 SBT2 that is in contact with the stopper member 31 in cooperation with the lower small batch SBT1 that is not in contact with the stopper member 31. That is, the lifter member 51 waits below the belt top surface 211 of the discharge conveyor 2, and at the same time as the rear end of the lower small batch SBT1 passes through the lifter member 51, it rises and horizontally moves the upper small batch SBT2. Support it in the same way. Further, the lifter member 51 descends to the standby position immediately after the rear end portion of the lower small batch SBT1 passes the stopper member 31. It is preferable that the lifter member 51 is formed so as to increase the horizontal frictional force f3 acting between the support surface and the corrugated cardboard sheet DS by, for example, attaching a rubber member to the support surface ( (see Figure 15).

Above the discharge conveyor 2, a pressing member elevating device 7A and a batch upper regulating device 7B are arranged. The pressing member elevating device 7A includes a drive cylinder 73 that vertically moves a pressing roller 72 that presses the front end upper surface of the batch BT that is in contact with the stopper member 31 downward. The drive cylinder 73 is fixed to the auxiliary frame member 93 at a position adjacent to the stopper member 31 . The batch upper regulating device 7B includes an upper regulating roller 71 that regulates the upper surface of the batch BT that comes into contact with the stopper member 31, depending on the type of batch BT to be supplied.

The pressure 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 pivotally supported by the lower end of an actuation bracket 732 connected to the upper end of a cylinder rod 731 of the drive cylinder 73. When the cylinder rod 731 of the drive cylinder 73 moves downward, the pressing roller 72 presses the front end upper surface of the batch BT that is in contact with the stopper member 31 downward, and brings the corrugated cardboard sheets DS of the batch BT into close contact with each other.

Note that when dividing the batch BT, the pressing member elevating device 7A uses the pressing roller 72 to raise and lower the batch BT so that the thickness of the divided batch BT corresponds to the lowered position KP of the stopper member 31. The upper surface may be pressed. In that case, even if the thickness of the batch BT changes, the pressure roller 72 presses the top surface of the batch BT so that the thickness corresponds to the lowered position KP of the stopper member 31 based on the predetermined division position BP. Accordingly, the dividing position BP of the batch BT can be maintained at a constant position. Therefore, the batch BT can be divided more stably at the predetermined division position BP.

A plurality of upper regulating rollers 71 are arranged at appropriate intervals in the left-right direction. The upper regulation roller 71 is formed by a plurality of rubber rollers 711 arranged in the front-rear direction being pivotally supported by a support frame 712 extending in the front-rear direction. The front end 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 of the support frame 712 is connected to the front end of an upper conveyor 158 (see FIG. 1) of the counter ejector 20 (described later), and moves up and down in conjunction with the upper conveyor 158. Note that by operating the frame drive mechanism 714 described above, the vertical position of the upper regulating roller 71 can be adjusted depending on the type of batch BT to be supplied.

The small batch conveyor 8 is disposed between the front end of the discharge conveyor 2 and the binding machine 17 (see FIG. 1), and is a conveyor that conveys the small batches SBT1 and SBT2 passing through the stopper member 31 to the downstream side. be. The small batch conveyor 8 includes a plurality of cylindrical rollers 81 arranged at predetermined intervals in the front-rear direction, and contacts the cylindrical rollers 81 from below to apply a frictional force to move the cylindrical rollers 81 to the downstream side. It is provided with belts 82A, 82B that rotate the belts 82A, 82B, and a drive motor 83 that drives the belts 82A, 82B. The drive motor 83 is connected to drive pulleys disposed at the front ends of the belts 82A, 82B. 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 surface of the left side frame body 91, and has a measurement device 61 that measures the thickness of the batch BT and detects the batch BT at an intermediate portion of the discharge conveyor 2 in the front-rear direction. a second sensor 63 and a third sensor 64 that detect the batch BT on the downstream side of the discharge conveyor 2; and a fourth sensor 65 and a third sensor that detect the small batches STB1 and STB2 passing through the stopper member 31. The fifth sensor 67 is electrically connected to a sixth sensor 68 and a seventh sensor 69 that detect the batch BT passing through the lifter member 51. The batch division control device 6 also includes a drive motor 22 of the discharge conveyor 2, a drive motor 33 of the stopper lifting device 3, a drive mechanism 52 of the lifter device 5, a drive cylinder 73 of the press roller 72, and a small batch conveyor The drive motor 83 of No. 8 is electrically connected to the frame drive mechanism 714, respectively. Further, the batch division control device 6 is electrically connected to the corrugated sheet box making machine control and management device 18 and the counter ejector control device 181, and exchanges various control signals.

The measuring device 61 is a distance measuring device using a laser beam that irradiates the front end upper surface of the batch BT at a position adjacent to the two stopper members 31 (31A, 31B), and two of the measuring devices 61 are attached to the auxiliary frame member 93. ing. The batch division control device 6 uses each stopper lifting device 3 to move each stopper member 31 from an upper standby position to a lowered position KP where the batch BT is divided, based on each thickness dimension of the batch BT measured by each measuring device 61. Each movement amount is corrected to make the lower end (lowered position) of each stopper member 31 match the division position BP of the batch BT.

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

The fourth sensor 65 (651, 652) includes a light projector 65A (651A, 652A) that emits light beams downward, and receives the light beams below the upper surface of the cylindrical roller 81 of the small batch conveyor 8. It has a light receiver 65B (651B, 652B), and outputs a batch detection signal when the light beam emitted from the light emitter 65A (651A, 652A) is blocked by the upper surface of the small batch SBT1, SBT2 passing through the stopper member 31. It is a sensor that Two sets of light emitters 65A (651A, 652A) and light receivers 65B (651B, 652B) are provided at the center in the left-right direction of the device on the downstream side of the stopper member 31.The two sets of fourth sensors 65 (651, 652) are , are fixed to the support 66 so that the distance apart in the left-right direction is larger than the width of the slot groove of the corrugated cardboard sheet DS. The fixture 66 is fixed to the center portion of the auxiliary frame member 93 in the left-right direction, and the lower support fixture 66 for fixing the light receiver 65B (651B, 652B) is fixed to the side frame body 91.

The fifth sensor 67 includes a light emitter that emits a plurality of light beams in the left and right directions 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 sensor outputs a batch detection signal when the light beam passing through the stopper member 31 is blocked by the side edges of the small batches SBT1 and SBT2. In each of the fifth sensors 67, a light projector is fixed to a bracket 94 of one side frame 91, and a light receiver is fixed to a bracket 94 of the opposite side frame 91. The fifth sensor 67 detects the distance in the front-rear direction in the lower range of the elastic roller body 41 and the horizontal wall part 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 horizontal wall part 312. The distance in the front-rear direction in the irradiation range of the plurality of light beams projected from the light projector of the fifth sensor 67 is set to be larger than that of the fifth sensor 67.

The sixth sensor 68 and the seventh sensor 69 are distance measuring devices using laser beams that respectively irradiate the lower surface of the batch BT, and when the lower surface of the upper small batch SBT2 in contact with the stopper member 31 is irradiated, a batch detection signal is generated. This is a sensor that outputs . The sixth sensor 68 is located below the belt top surface 211 of the discharge conveyor 2 and close to the front end of the downstream lifter device 5A, and the seventh sensor 69 is located below the belt top surface 211 of the discharge conveyor 2. It is arranged at a position close to the front end of the upstream lifter device 5B.

<Control method of batch dividing device>
Next, a method of controlling the present batch dividing apparatus will be explained using FIGS. 6 to 18. FIG. 6 shows a main control flowchart of the first embodiment of the corrugated paperboard sheet batch dividing apparatus shown in FIG. 3. FIG. 7 shows a detailed flowchart of the batch division process shown in FIG. 6. FIG. 8 shows a detailed flowchart of the remaining sheet discharge process shown in FIG. 6. FIG. 9 shows a main control flowchart of the second embodiment of the corrugated sheet batch dividing apparatus shown in FIG. 3. FIG. 10 shows a detailed flowchart of the batch division process shown in FIG. 9. FIG. 11 shows a main control flowchart of the third embodiment of the corrugated sheet batch dividing apparatus shown in FIG. 3. FIG. 12 shows a detailed flowchart of the first batch division process shown in FIG. 11. FIG. 13 shows a detailed flowchart of the dividing process for the second and subsequent batches shown in FIG. 11. FIG. 14 shows a cross-sectional view for explaining the batch dividing operation in the corrugated paperboard sheet batch dividing apparatus shown in FIG. 3. FIG. 15 is a cross-sectional view for explaining the lifting operation of the press roller and lifter member in the corrugated paperboard sheet batch dividing apparatus shown in FIG. 3. FIG. 16 is a cross-sectional view for explaining the raising of the stopper member and the lowering of the lifter member in the corrugated sheet batch dividing apparatus shown in FIG. 3. FIG. 17 shows a cross-sectional view for explaining the downward movement of the stopper member in the corrugated paperboard sheet batch dividing apparatus shown in FIG. 3. FIG. 18 shows a sectional view for explaining the temporary stopping operation of the discharge conveyor in the corrugated paperboard sheet batch dividing apparatus shown in FIG. 3.

(Control method of first embodiment)
First, the control method of the first embodiment of the present batch dividing apparatus 10 will be explained. According to the control method of the first embodiment, as shown in FIGS. 3, 6 to 8, and 14 to 18, the front end of the batch BT moving downstream at a predetermined speed by the discharge conveyor 2; The stopper lifting device 3 is operated to lower the stopper member 31 to the lowering position KP corresponding to the dividing position BP, and the pressing member lifting device 7A is operated to cause the pressing roller (pressing member) 72 to press the top surface of the batch BT. The batch BT is divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31.

Specifically, according to the control method of the first embodiment, as shown in FIG. 6, upon receiving a processing start signal, the batch division control device 6 determines whether it is necessary to eject remaining sheets that are not to be divided. A determination is made as to whether or not it is necessary to eject the remaining sheets (step SA1), and if it is necessary to eject the remaining sheets, a remaining sheet ejecting process (step S3), which will be described later, is performed. Furthermore, if the remaining sheet discharge is not necessary, the batch division process (step SA2) described below is performed. Note that the remaining sheets that are not subject to division correspond to batch BTs in which the number of stacked sheets is smaller than the regular number of stacked sheets; for example, when the regular number of stacked sheets is 10 sheets, a batch BT in which the number of stacked sheets is 8 sheets corresponds to the remaining sheets.

Next, as shown in FIGS. 3 and 7, at the beginning of the batch division process, the batch division control device 6 determines whether or not the discharge conveyor 2 is being driven (step SA3), and stops the discharge conveyor 2. If so, a signal is output to start the drive motor 22 of the discharge conveyor 2 (step SA4). Subsequently, the supply of a new batch BT at the intermediate portion of the discharge conveyor 2 is confirmed by the batch detection signal from the first sensor 62 (step SA5).

Next, as shown in FIGS. 7 and 14, upon receiving the batch detection signal from the first sensor 62, the batch division control device 6 determines whether the batch BT is the first batch BT to be divided in the same order. (Step SA6). Only when the batch BT is divided for the first time, the drive motor 33 of the stopper lifting device 3 is operated to move the stopper member 31 to the lowered position KP corresponding to the division position BP of the batch BT (step SA7).

Note that the lowering position KP of the stopper member 31 is set such that the lower end of the stopper member 31 is located above the sheet boundary surface at the dividing position BP of the batch BT by about 1/2 of the thickness dimension of the corrugated cardboard sheet DS. ing. Further, the positioning of the stopper member 31 to the lowered position KP is performed from a table stored in advance in the corrugated sheet box making machine control management device 18 based on order information such as the type of corrugated sheet DS and the number of laminated sheets of the batch BT. The thickness of the batch BT when pressed by the pressure roller 72 is acquired, and the process can be performed based on the thickness of the batch BT.

Next, as shown in FIGS. 7 and 14, after receiving the batch detection signal from the first sensor 62, the batch division control device 6 confirms that the set time for lowering the pressure roller 72 has elapsed (step SA8). ), when the set time has elapsed, the drive cylinder 73 of the pressing member lifting device 7A is operated to lower the pressing roller 72 from the upper standby position (step SA9). When the cylinder rod 731 of the drive cylinder 73 moves downward, the pressing roller 72 presses the front end upper surface of the batch BT that is in contact with the stopper member 31 downward, and brings the corrugated cardboard sheets DS of the batch BT into close contact with each other. As a result, the press roller 72 holds the front end of the batch BT moving downstream at a predetermined speed by the discharge conveyor 2 and the stopper member 31 that has been lowered to the lowered position KP corresponding to the dividing position BP of the batch BT. The batch BT can be divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31 by contacting the upper surface of the BT while being pressed.

Next, as shown in FIGS. 7 and 15, the batch division control device 6 confirms that the set time for raising the press roller 72 has elapsed after the lowering of the press roller 72 (step SA10), and the set time has elapsed. Then, the drive cylinder 73 of the pressing member lifting device 7A is operated to raise the pressing roller 72 to the standby position (step SA11). That is, when the batch BT starts to be divided into the lower small batch SBT1 that does not contact the stopper member 31 and the upper small batch SBT2 that contacts the stopper member 31, the pressing roller 72 needs to press the upper surface of the batch BT. The pressure roller 72 is raised to the standby position.

Next, as shown in FIG. 3, FIG. 7, and FIG. 15, when the batch division control device 6 receives batch detection signals from the sixth sensor 68 and the seventh sensor 69, The drive mechanism 52 is operated 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 SA12). 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 is in contact with the stopper member 31 in cooperation with the lower small batch SBT1 that is not in contact with the stopper member 31, so that the upper small batch SBT2 that acts on the lower small batch SBT1 is The load on SBT2 can be reduced. Therefore, 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 can be reduced.

Next, as shown in FIGS. 7 and 16, when the batch detection signal from the third sensor 64 is turned off, the batch division control device 6 controls the rear end portion of the lower small batch SBT1 that does not come into contact with the stopper member 31. After confirming that the stopper member 31 has passed through the stopper member 31 (step SA13), the drive motor 33 of the stopper lifting device 3 is activated to move the stopper member 31 to the upper retracted position (step SA14). As a result, when the upper small batch SBT2 falls onto 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 that has fallen onto the discharge conveyor 2 is expanded. Even if the front end side of the uppermost corrugated sheet DS of the upper small batch SBT2 is warped and deforms upward, the possibility of interference between the corrugated sheet DS and the stopper member 31 can be reduced. can.

In addition, as shown in FIGS. 7 and 16, 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 keep the lifter member 51 on standby. It is lowered to the position (step SA15). Thereby, when the upper small batch SBT2 falls onto the discharge conveyor 2, the lifter member 51 can descend while horizontally supporting the upper small batch SBT2 and land on the discharge conveyor 2. Therefore, the positional shift of the corrugated cardboard sheets DS in the upper small batch SBT2 can be further suppressed while being discharged to the downstream side.

Next, as shown in FIGS. 7 and 17, after receiving the batch detection signals from the fourth sensor 65 (651, 652) and the fifth sensor 67, the batch division control device 6 , 652) and the batch detection signals from the fifth sensor 67 are all turned off, it is confirmed that the upper small batch SBT2 has passed the stopper member 31 (step SA16). Note that the batch division control device 6 drives the drive motor 83 of the small batch transport conveyor 8 in conjunction with the drive motor 22 of the discharge conveyor 2, so that after the lower small batch SBT1 is discharged to the downstream side, The upper small batch SBT2 is also discharged to the downstream side. Then, in order to handle the next batch BT, the batch division control device 6 operates the drive motor 33 of the stopper lifting device 3 to move the stopper member 31 to the lowering position KP corresponding to the division position BP of the batch BT. (Step SA17). Thereafter, the process returns to the determination of whether or not it is necessary to eject the remaining sheets (step SA1) shown in FIG.

Here, the two sets of fourth sensors 65 (651, 652) are fixed to the support 66 so that the distance in the left and right direction is larger than the width of the slot groove of the corrugated sheet DS, as described above. There is. Therefore, even when the slot groove part of the corrugated cardboard sheet DS passes through the irradiation position of the light beam from one sensor and the batch detection signal turns off, the light beam from the other sensor passes through the slot groove part of the corrugated board sheet DS adjacent to the slot groove. The sheet surface is irradiated and a sensor detection signal is continuously output. Therefore, by detecting that the batch detection signals from the two sets of fourth sensors 65 (651, 652) are both turned off, the passage of the rear ends of the small batches SBT1 and SBT2 is reliably confirmed. be able to.

In addition, in determining whether or not remaining sheet ejection is necessary (step SA1) shown in FIG. 6, if remaining sheet ejection is necessary, the batch division control device 6 performs remaining sheet ejection processing (step S3) described below. That is, as shown in FIG. 8, the drive motor 22 of the discharge conveyor 2 is operated (step S31), and the drive motor 33 of the stopper lifting device 3 is operated to move the stopper member 31 to the retracted position (step S32). Thereafter, after confirming that the discharge of the remaining sheets has been completed (step S33), the discharge conveyor 2 is stopped (step S34), and the process ends. By repeating the above operations for all the batches BT to be divided, the batches BT of the vertically stacked corrugated cardboard sheets DS can be stably divided at the predetermined division position BP.

Note that the present batch dividing apparatus 10 is not limited to dividing the batch BT into upper and lower halves, but can also divide the batch BT into an arbitrary number of parts. For example, when dividing into three small batches SBT, the height of the lowered position KP of the stopper member 31 is set to a height that equally divides the thickness of the batch BT into upper and lower thirds. Then, starting from the lowest small batch SBT1 that does not contact the stopper member 31, the upper SBT2 and SBT3 can be discharged downstream in this order by the discharge conveyor 2 and divided.

Further, as shown in FIG. 18, the batch division control device 6 stops the drive motor 22 of the discharge conveyor 2 to temporarily stop the movement of the batch BT at a stop position TP upstream of the stopper member 31. , the batch BT may be moved again. After temporarily stopping the movement of the batch BT, while moving it again, the drive motor 33 of the stopper lifting device 3 is operated to lower the stopper member 31 to an appropriate lowering position KP corresponding to the predetermined division position BP. Moreover, the driving cylinder 73 of the pressing member elevating device 7A can be operated to move the pressing roller 72 to an appropriate pressing height. Therefore, the batch BT can be stably divided at the even more accurate division position BP.

(Control method of second embodiment)
Next, a control method of the second embodiment in the present batch dividing apparatus 10 will be explained. In the control method of the second embodiment, as shown in FIGS. 3, 9, 10, and 14 to 18, the stopper lifting device 3 operates based on the thickness d1 of the batch BT measured by the measuring device 61 The difference from the control method of the first embodiment is that the lowering position KP of the stopper member 31 is adjusted. Here, the differences from the control method of the first embodiment will be mainly explained, and the common points with the control method of the first embodiment will be briefly explained.

Specifically, according to the control method of the second embodiment, as shown in FIG. 9, when the batch division control device 6 receives a processing start signal, it determines whether or not remaining sheet ejection is necessary, as in the first embodiment. (step SB1), and if remaining sheet ejection is necessary, remaining sheet ejection processing (step S3) is performed, and if remaining sheet ejection is not necessary, batch division processing (step SB2) described below is performed. I do.

Next, as shown in FIGS. 3 and 10, at the beginning of the batch division process, the batch division control device 6 determines whether or not the discharge conveyor 2 is being driven (step SB3), and stops the discharge conveyor 2. If so, the drive motor 22 of the discharge conveyor 2 is started (step SB4). Subsequently, the supply of a new batch BT at the intermediate portion of the discharge conveyor 2 is confirmed by the batch detection signal from the first sensor 62 (step SB5).

Next, as shown in FIGS. 10 and 14, upon receiving the batch detection signal from the first sensor 62, the batch division control device 6 causes the pressing roller 72 to descend. It is confirmed that the set time has elapsed (step SB6), and when the set time has elapsed, the drive cylinder 73 of the pressing member lifting device 7A is activated to lower the pressing roller 72 from the upper standby position (step SB7). When the cylinder rod 731 of the drive cylinder 73 moves downward, the pressing roller 72 presses the front end upper surface of the batch BT that is in contact with the stopper member 31 downward, and brings the corrugated cardboard sheets DS of the batch BT into close contact with each other.

Next, as shown in FIGS. 10 and 14, the batch division control device 6 causes the measurement device 61 to measure the thickness of the batch BT while the pressure roller 72 presses the top surface of the batch BT downward. Step SB8), based on the thickness dimension of the batch BT measured by the measuring device 61, the drive motor 33 of the stopper lifting device 3 is operated to move the stopper member 31 from the retracted position to the lowered position corresponding to the dividing position BP of the batch BT. It is moved to KP (step SB9). Thereby, even if there is variation in the thickness of the batch BT, the lowering position KP of the stopper member 31 can be adjusted according to the thickness of the batch BT measured by the measuring device 61. As a result, the batch BT can be divided more stably at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the thickness of the batch BT.

Note that, when dividing the batch BT, the pressing member elevating device 7A is arranged so that the thickness d1 of the divided batch BT corresponds to the lowering position KP of the stopper member 31 based on the predetermined dividing position BP. Preferably, the upper surface of the batch BT is pressed by the pressing roller 72. In this case, even if the thickness of the batch BT changes, the pressure roller 72 presses the top surface of the batch BT so that the thickness corresponds to the lowered position KP of the stopper member 31, so that the dividing position BP of the batch BT is changed. can be maintained in a fixed position. Therefore, the batch BT can be divided more stably at the predetermined division position BP.

Next, as shown in FIGS. 3, 10, and 15, the batch division control device 6 confirms that the set time for raising the pressing roller 72 has elapsed after the lowering of the pressing roller 72 (step SB10), and sets the When the time has elapsed, the drive cylinder 73 of the pressing member lifting device 7A is operated to raise the pressing roller 72 to the standby position (step SB11). Further, upon receiving batch detection signals from the sixth sensor 68 and the seventh sensor 69, the batch division control device 6 operates the drive mechanism 52 of each lifter device 5 (5A, 5B) to move the lifter member 51 upward. It is raised to a position where it comes into contact with the lower surface of the small batch SBT2 (step SB12).

Next, as shown in FIGS. 10 and 16, the batch detection signal from the third sensor 64 is turned off, and the batch division control device 6 controls the rear end portion of the lower small batch SBT1 that does not come into contact with the stopper member 31. After confirming that the stopper member 31 has passed through the stopper member 31 (step SB13), the drive motor 33 of the stopper lifting device 3 is activated to move the stopper member 31 to the upper retracted position (step SB14). Further, 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 lower the lifter member 51 to the standby position (step SB15).

Next, as shown in FIGS. 10 and 17, after receiving the batch detection signals from the fourth sensor 65 (651, 652) and the fifth sensor 67, the batch division control device 6 receives the batch detection signal from the fourth sensor 65 (651, 652). , 652) and the batch detection signals from the fifth sensor 67 are all turned off, it is confirmed that the upper small batch SBT2 has passed the stopper member 31 (step SB16). Thereafter, in order to handle the next batch BT, the batch division control device 6 returns to the process of determining whether or not it is necessary to discharge the remaining sheets (step SB1) shown in FIG. In addition, in determining whether or not the remaining sheet ejection is necessary (step SB1) shown in FIG. 9, if the remaining sheet ejection is necessary, the batch division control device 6 performs the same remaining sheet ejection process as in the first embodiment (step S3). I do.

(Control method of third embodiment)
Next, a control method of the third embodiment in the present batch dividing apparatus 10 will be explained. In the control method of the third embodiment, as shown in FIG. 3 and FIG. 11 to FIG. The movement of the batch BT is temporarily stopped at the stop position TP, and the measurement device 61 measures the thickness d1 of the batch BT only for the first batch BT to be divided, and then the batch BT is moved again. The device 3 can set the lowering position KP of the stopper member 31 for the first batch BT to be divided and the second and subsequent batches BT to be divided based on the measured thickness d1 of the first batch BT to be divided. The control method is different from that of the first embodiment. Here, the differences from the control method of the first embodiment will be mainly explained, and the common points with the control method of the first embodiment will be briefly explained.

Specifically, according to the control method of the third embodiment, as shown in FIG. 11, when the batch division control device 6 receives a processing start signal, it determines whether or not remaining sheet ejection is necessary, as in the first embodiment. (Step SC1), and if it is necessary to discharge the remaining sheets, perform the remaining sheet discharge process (Step S3), and if it is not necessary to discharge the remaining sheets, divide the first batch BT in the production of the same order. (step SC2), and if it is the division of the first batch BT, perform the division process of the first batch (step SC3) described below, and if it is not division of the first batch BT. , performs the second and subsequent batch division processing (step SD3), which will be described later.

Next, as shown in FIGS. 3 and 12, in the case of the division processing of the first batch BT (step SC3), the batch division control device 6 controls the discharge conveyor 2 while it is being driven at the beginning of the batch division processing. It is determined whether or not (step SC4), and if the discharge conveyor 2 is stopped, the drive motor 22 of the discharge conveyor 2 is started (step SC5). Subsequently, the supply of a new batch BT at the intermediate portion of the discharge conveyor 2 is confirmed by the batch detection signal of the first sensor 62 (step SC6).

Next, as shown in FIG. 3, FIG. 12, and FIG. 18, upon receiving the batch detection signal from the first sensor 62, the batch division control device 6 controls the discharge conveyor 2. It is confirmed that the set time for stopping has elapsed (step SC7), and when the set time has elapsed, the batch BT to be divided first advances to the stop position TP on the upstream side of the stopper member 31 and is then stopped. The drive motor 22 of the conveyor 2 is stopped (step SC8).

Next, as shown in FIGS. 12 and 18, after receiving the stop signal for the discharge conveyor 2, the batch division control device 6 operates the drive cylinder 73 of the pressing member lifting device 7A to move the pressing roller 72 upward. It is lowered from the standby position (step SC9). When the cylinder rod 731 of the drive cylinder 73 moves downward, the pressing roller 72 presses the front end upper surface of the batch BT that is in contact with the stopper member 31 downward, and brings the corrugated cardboard sheets DS of the batch BT into close contact with each other.

Next, as shown in FIGS. 12 and 18, the batch division control device 6 causes the measuring device 61 to measure the thickness of the batch BT while the pressure roller 72 presses the top surface of the batch BT downward. Step SC10), based on the thickness dimension of the batch BT measured by the measuring device 61, the drive motor 33 of the stopper lifting device 3 is operated to move the stopper member 31 from the retracted position to the lowered position corresponding to the dividing position BP of the batch BT. It is moved to KP (step SC11). As a result, the lowering position KP of the stopper member 31 can be adjusted according to the thickness d1 of the first batch BT measured by the measuring device 61. For example, the height d2 of the lowered position KP of the stopper member 31 with respect to the upper surface of the discharge conveyor 2 is added to 1/2 of the thickness d1 of the first batch BT by approximately 1/2 of the thickness dimension of the corrugated cardboard sheet DS. height.

Next, as shown in FIGS. 12 and 14, the batch division control device 6 starts the drive motor 22 of the discharge conveyor 2 after the stopper member 31 moves to the lowered position KP (step SC12). As a result, the front end of the batch BT moving downstream at a predetermined speed by the discharge conveyor 2 and the stopper lowered to the lowering position KP adjusted according to the thickness of the first batch BT measured by the measuring device 61 The member 31 is brought into contact with the upper surface of the batch BT while being pressed by the press roller 72, and the batch BT is moved more accurately and stably. It can be divided into an upper small batch SBT2 that abuts on the upper small batch SBT2.

Next, as shown in FIGS. 12 and 15, after the discharge conveyor 2 is started, it is confirmed that the set time for raising the press roller 72 has elapsed (step SC13), and when the set time has elapsed, the press member lifting device 7A is started. The drive cylinder 73 is operated to raise the pressure roller 72 to the standby position (step SC14).

Next, as shown in FIGS. 3, 12, and 15, when the batch division control device 6 receives batch detection signals from the sixth sensor 68 and the seventh sensor 69, The drive mechanism 52 is operated 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 SC15).

Next, as shown in FIGS. 12 and 16, when the batch detection signal from the third sensor 64 is turned off, the batch division control device 6 controls the rear end portion of the lower small batch SBT1 that does not come into contact with the stopper member 31. After confirming that the stopper member 31 has passed through the stopper member 31 (step SC16), the drive motor 33 of the stopper lifting device 3 is activated to move the stopper member 31 to the upper retracted position (step SC17). Further, 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 lower the lifter member 51 to the standby position (step SC18).

Next, as shown in FIGS. 12 and 17, after receiving the batch detection signals from the fourth sensor 65 (651, 652) and the fifth sensor 67, the batch division control device 6 receives the batch detection signal from the fourth sensor 65 (651, 652). , 652) and the batch detection signals from the fifth sensor 67 are all turned off, it is confirmed that the upper small batch SBT2 has passed the stopper member 31 (step SC19). After the upper small batch SBT2 passes the stopper member 31, the batch division control device 6 moves the stopper member 31 to the lowered position KP (SC20) in order to deal with the next second and subsequent batches BT. The process returns to the determination of whether or not the remaining sheet is required to be ejected (step SC1) shown in FIG.

Next, as shown in FIG. 11, it is determined whether or not it is necessary to eject the remaining sheets (step SC1), and if it is necessary to eject the remaining sheets, the remaining sheet ejecting process (step S3) is performed, and if ejecting the remaining sheets is not necessary. If so, it is checked whether the first batch BT in production of the same order is divided (step SC2), and if the first batch BT is not divided, the second and subsequent batches are divided (described below). Step SD3) is performed.

Next, as shown in FIGS. 3 and 13, in the case of dividing processing of the second and subsequent batches BT (step SD3), the batch division control device 6 causes the discharge conveyor 2 to be driven at the beginning of the batch division processing. It is determined whether the discharge conveyor 2 is inside (step SD4), and if the discharge conveyor 2 is stopped, the drive motor 22 of the discharge conveyor 2 is started (step SD5). Subsequently, the supply of a new batch BT at the intermediate portion of the discharge conveyor 2 is confirmed by the batch detection signal from the first sensor 62 (step SD6).

Next, as shown in FIG. 3, FIG. 13, and FIG. 14, upon receiving the batch detection signal from the first sensor 62, the batch division control device 6 controls the pressing roller It is confirmed that the set time for lowering 72 has elapsed (step SD7), and when the set time has elapsed, the drive cylinder 73 of the pressing member lifting device 7A is activated to lower the pressing roller 72 from the upper standby position (step SD8). . When the cylinder rod 731 of the drive cylinder 73 moves downward, the pressing roller 72 presses the front end upper surface of the batch BT that is in contact with the stopper member 31 downward, and brings the corrugated cardboard sheets DS of the batch BT into close contact with each other.

As a result, the front end of the batch BT to be divided into the second and subsequent batches moving downstream at a predetermined speed by the discharge conveyor 2 and the lowering position adjusted according to the thickness of the first batch BT measured by the measuring device 61. The stopper member 31 that has been lowered to KP is brought into contact with the upper surface of the batch BT while being pressed by the press roller 72, thereby making the batch BT even more stable and separating it from the lower small batch SBT1 that does not contact the stopper member 31. , and an upper small batch SBT2 that abuts the stopper member 31. As a result, it is possible to stably divide the batch at a predetermined dividing position while reducing the time loss associated with the temporary stop and measuring the thickness of the batch BT and increasing the productivity of the batch dividing apparatus.

Next, as shown in FIGS. 13 and 15, after the pressure roller 72 has been lowered, it is confirmed that the set time for the pressure roller 72 to rise has elapsed (step SD9), and when the set time has elapsed, the pressure member lifting device 7A is The drive cylinder 73 is operated to raise the pressure roller 72 to the standby position (step SD10).

Next, as shown in FIG. 3, FIG. 13, and FIG. 15, when the batch division control device 6 receives the batch detection signals from the sixth sensor 68 and the seventh sensor 69, it The drive mechanism 52 is operated 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 SD11).

Next, as shown in FIGS. 13 and 16, when the batch detection signal from the third sensor 64 is turned off, the batch division control device 6 controls the rear end portion of the lower small batch SBT1 that does not come into contact with the stopper member 31. After confirming that the stopper member 31 has passed through the stopper member 31 (step SD12), the drive motor 33 of the stopper lifting device 3 is activated to move the stopper member 31 to the upper retracted position (step SD13). Further, 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 lower the lifter member 51 to the standby position (step SD14).

Next, as shown in FIGS. 13 and 17, after receiving the batch detection signals from the fourth sensor 65 (651, 652) and the fifth sensor 67, the batch division control device 6 receives the batch detection signal from the fourth sensor 65 (651, 652). , 652) and the batch detection signals from the fifth sensor 67 are all turned off, it is confirmed that the upper small batch SBT2 has passed the stopper member 31 (step SD15). After the upper small batch SBT2 passes the stopper member 31, the batch division control device 6 moves the stopper member 31 to the lowered position KP (SD16) in order to handle the next batch BT, and the remaining sheets shown in FIG. The process returns to the determination of necessity of ejection (step SC1).

Next, as shown in FIG. 11, it is determined whether or not it is necessary to eject the remaining sheets (step SC1), and if it is necessary to eject the remaining sheets, the remaining sheet ejecting process (step S3) is performed, and if ejecting the remaining sheets is not necessary. If so, it is confirmed whether or not the first batch BT in the production of the same order is divided (step SC2), and if it is not the first batch BT divided, the above-mentioned division process of the second and subsequent batches is performed (step SD3). )repeat. In addition, in the determination of whether or not the remaining sheet ejection is necessary (step SC1) shown in FIG. 11, if the remaining sheet ejection is necessary, the batch division control device 6 performs the same remaining sheet ejection process as in the first embodiment (step S3). I do.

<Configuration of counter ejector>
Next, the configuration of a counter ejector according to a second embodiment of the present invention will be explained using FIGS. 1 to 5 and FIG. 19. FIG. 19 shows a cross-sectional view for explaining the batch forming operation in the batch forming apparatus shown in FIG.

As shown in FIGS. 1 to 5 and 19, the counter ejector 20 separates a batch BT in which a plurality of corrugated sheets DS produced in the corrugated sheet box making machine 1 are stacked vertically into predetermined dividing positions BP. A counter ejector 20 includes a batch dividing device 10 for corrugated cardboard sheets that is divided into upper and lower parts to form small batches SBT with a small number of laminated sheets, and includes a batch forming device 15 on the upstream side of the batch dividing device 10 described above. ing.

As described above, the batch forming device 15 includes a main ledge (ledge) 151 that can move forward and backward in the horizontal direction in order to separate the corrugated cardboard sheets DS stacked in a predetermined storage area and form batches BT of a predetermined number of sheets. and a delivery conveyor 152 which is arranged below a predetermined storage area and sends out the batch BT loaded with a predetermined number of corrugated sheets DS in the delivery direction; It has an elevator 153 that moves up and down in order to convey the batch BT from the area to the delivery conveyor 152. The front end of the delivery conveyor 152 is adjacent to the rear end of the discharge conveyor 2.

Specifically, as shown in FIG. 19, the batch forming device 15 includes an entrance roll 157, a front contact plate 154, a straightening plate 155, a main ledge 151, an auxiliary ledge 156, an elevator 153, and a delivery conveyor. 152 and an upper conveyor 158.

The entrance roll 157 consists of a pair of upper and lower cylindrical roll bodies, rotates while sandwiching the corrugated cardboard sheet DS supplied from the folder gluer 14, and is placed between the front contact plate 154 and the straightening plate 155 that constitute a predetermined storage area. throw into. The front contact plate 154 stands vertically and is connected to a screw drive unit 154B so as to be movable back and forth in accordance with the length of the corrugated cardboard sheet DS in the front and back direction. The straightening plate 155 is fixed to the main body of the batch forming device 15 so as to stand vertically below the input port of the inlet roll 157 .

The main ledge 151 includes a receiving part 151B with a substantially L-shaped cross section on which a plurality of corrugated cardboard sheets DS inputted from the entrance roll 157 are placed, an elevating part 151C that moves the receiving part 151B up and down, and an elevating part 151C that moves the elevating part 151C in the front and rear direction. It has an advancing/retracting part 151D for advancing and retreating. The auxiliary ledge 156 consists of a pair of lid members that can be opened and closed in the horizontal direction below the front abutting plate 154 and the straightening plate 155, and the advancing/retreating part 151D of the main ledge 151 moves the receiving part 151B rearward (downstream side). By doing so, the batch BT of corrugated cardboard sheets DS stacked on the receiving portion 151B of the main ledge 151 is configured to be received. The elevator 153 is formed to be movable up and down below the auxiliary ledge 156, receives the batch BT on the auxiliary ledge when the auxiliary ledge 156 opens, and moves it downward. The delivery conveyor 152 is arranged at the lowered position of the elevator 153, and sends out the batch BT on the elevator to the downstream side. A roller body that rotates while regulating the upper surface of the batch BT on the delivery conveyor 152 is attached to the upper conveyor 158.

According to the batch forming device 15, a pair of inlet rolls 157 sandwich and rotate the corrugated cardboard sheet DS supplied from the folder gluer 14, and the corrugated sheet DS is inserted between the front contact plate 154 and the straightening plate 155 that constitute a predetermined storage area. do. Corrugated cardboard sheets DS stacked in a predetermined storage area partitioned by a front contact plate 154 and a straightening plate 155 are separated by a main ledge 151 and an auxiliary ledge 156 to form a batch BT of a predetermined number of sheets. Then, the elevator 153 transports the batch BT loaded with a predetermined number of corrugated sheets DS to the delivery conveyor 152 for sending out in the delivery direction. The delivery conveyor 152 sends out the batch BT received from the elevator 153 to the discharge conveyor 2 while being regulated from above by an upper conveyor 158. Note that an upper regulation roller 71 of a batch upper regulation device 7B connected to the upper conveyor 158 is provided above the discharge conveyor 2, and a predetermined number of stacked batches BT are vertically moved by the discharge conveyor 2 and the upper regulation roller 71. It is stabilized in shape while being regulated in the direction, and then supplied to the batch dividing device 10.

Further, as described above, the batch dividing device 10 includes the discharge conveyor 2 that discharges the batch BT supplied by the delivery conveyor 152 to the downstream side, and the front end portion of the batch BT that is disposed above the discharge conveyor 2 on the downstream side. The stopper member 31 that comes into contact with the stopper member 31, the stopper lifting device 3 that moves the stopper member 31 up and down, the press roller (press member) 72 that presses the upper surface of the batch BT downward on the upstream side of the stopper member 31, and the press roller 72. The front end of the batch BT is moved downstream at a predetermined speed by the discharge conveyor 2, and the stopper lifting device 3 is operated to move the front end of the batch BT to a lowering position KP corresponding to the dividing position BP. The press member lifting device 7A is activated to bring the press roller 72 into contact with the upper surface of the batch BT while pressing the stopper member 31, and the batch BT is moved to the lower small part that does not contact the stopper member 31. It is divided into a batch SBT1 and an upper small batch SBT2 that contacts the stopper member 31.

According to the present counter ejector 20, by providing the batch forming device 15 on the upstream side of the batch dividing device 10, batches BT having different numbers of sheets can be formed while increasing productivity. For example, if a small batch SBT with a small number of sheets is produced by the batch forming device 15, there will be a lot of time loss due to the vertical movement of the elevator 153, etc., and the production speed will be slow. is formed and then divided into small batches SBT with a small number of sheets by the batch dividing device 10 on the downstream side, thereby reducing the time loss associated with the vertical movement of the elevator 153 and increasing the production speed.

Further, in the batch dividing device 10 included in the present counter ejector 20, the front end of the batch BT and the stopper member 31 are brought into contact with each other while the pressing roller 72 presses the upper surface of the batch BT on the upstream side of the stopper member 31. Even if the corrugated sheets DS of the batch BT have a slight warp in the vertical direction, the warp can be corrected before dividing, and the vertically adjacent corrugated sheets DS can be brought into almost uniform contact with each other, and the corrugated sheets DS can be It is possible to reduce variations in the frictional force in the Therefore, when the front end of the batch BT is brought into contact with the stopper member 31, slippage between the corrugated cardboard sheets DS will occur stably at the boundary immediately below the stopper member 31.

Further, a pressing roller 72 is applied to the stopper member 31 that has lowered the front end of the batch BT, which is being moved downstream at a predetermined speed by the discharge conveyor 2, to a lowering position KP corresponding to a predetermined dividing position BP. By pressing and abutting the upper surface of the batch BT on the upstream side, the sliding between the corrugated cardboard sheets DS is prevented at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the predetermined dividing position BP. The corrugated cardboard sheets DS that are stably generated and stacked below the stopper member 31 can be moved downstream at the same speed according to the law of inertia. As a result, the batch BT in which a plurality of corrugated cardboard sheets DS are stacked vertically is divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31 in a predetermined manner. Stable division can be performed at position BP.

<How to divide cardboard sheets into batches>
Next, a method for dividing corrugated cardboard sheets into batches according to a third embodiment of the present invention will be described with reference to FIGS. 1, 14 to 18, and 20. FIG. 20 shows a flowchart of the corrugated cardboard sheet batch division method according to the present embodiment.

As shown in FIGS. 1, 14 to 18, and 20, in the batch dividing method according to the third embodiment, a plurality of corrugated cardboard sheets DS manufactured in a corrugated sheet box making machine 1 are stacked in the vertical direction. A batch dividing method for corrugated cardboard sheets in which a batch BT is divided into upper and lower parts at a predetermined dividing position BP to form small batches SBT with a small number of laminated sheets, the method includes a batch forming step ST1 for forming the batch BT, and a batch forming step ST1. A sending step ST2 in which the batch BT formed in is sent out by the sending conveyor 152 to the discharge conveyor 2 that moves the batch BT to the downstream side, and a sending step ST2 which is arranged above the downstream side of the discharge conveyor 2 and divides the batch BT sent out in the sending step ST2. A positioning step ST3 in which the stopper member 31 is positioned at a lowering position KP corresponding to a predetermined dividing position BP, and a batch being sent out to the discharge conveyor 2 in a sending step ST2 and moved downstream by the discharge conveyor 2 at a predetermined speed. There is a batch division step ST4 in which the BT is brought into contact with the stopper member 31 positioned at the lowered position KP to divide it into two upper and lower small batches SBT, and when the batch BT is divided in the batch division step ST4, A batch pressing step of pressing the upper surface of the batch BT with a pressing roller (pressing member) 72 so that the thickness d1 of the batch BT corresponds to the lowered position KP of the stopper member 31 positioned in the positioning step ST3. It is equipped with ST42.

The batch forming step ST1 includes a batch forming apparatus having an entrance roll 157, a front contact plate 154, a straightening plate 155, a main ledge 151, an auxiliary ledge 156, an elevator 153, a delivery conveyor 152, and an upper conveyor 158. 15, a pair of entrance rolls 157 sandwich and rotate the corrugated paperboard sheet DS supplied from the folder gluer 14, and the corrugated paperboard sheet DS is inserted between the front contact plate 154 and the straightening plate 155 which constitute a predetermined storage area. Corrugated cardboard sheets DS stacked in a predetermined storage area partitioned by a front contact plate 154 and a straightening plate 155 are separated by a main ledge 151 and an auxiliary ledge 156 to form a batch BT of a predetermined number of sheets. Then, the elevator 153 transports the batch BT loaded with a predetermined number of corrugated sheets DS to the delivery conveyor 152 for sending out in the delivery direction. The delivery conveyor 152 transports the batch BT received from the elevator 153 to the discharge conveyor 2 while being regulated from above by an upper conveyor 158.

The positioning step ST3 includes a stopper member 31 disposed above the downstream side of the discharge conveyor 2, and a stopper lifting device 3 having a drive motor 33 that moves the stopper member 31 up and down. The stopper member 31 is actuated to position the stopper member 31 at the lowered position KP corresponding to the dividing position BP of the batch BT.

The batch dividing step ST4 includes a discharge conveyor 2 and a stopper member 31, and brings the batch BT, which is moved downstream at a predetermined speed by the discharge conveyor 2, into contact with the stopper member 31 positioned at the lowering position KP. , into two small batches, upper and lower. Further, the batch pressing step ST42 includes a pressing roller 72 and a pressing member lifting device 7A having a drive cylinder 73 that moves the pressing roller 72 up and down, and operates the driving cylinder 73 of the pressing member lifting device 7A to move the pressing roller 72 up and down. 72 presses the front end upper surface of the batch BT that contacts the stopper member 31 downward. When dividing the batch BT, the pressing roller 72 divides the batch BT so that the thickness d1 of the divided batch BT corresponds to the lowered position KP of the stopper member 31 positioned in the positioning step ST3. Press the top surface.

According to this batch dividing method, the front end of the batch BT is brought into contact with the stopper member 31 while the pressing roller 72 presses the top surface of the batch BT on the upstream side of the stopper member 31, so that the corrugated cardboard sheets of the batch BT are brought into contact with each other. Even if the DS has a slight warp in the vertical direction, the warp can be corrected before it is divided, and the vertically adjacent corrugated sheets DS can be brought into almost uniform contact with each other, thereby reducing variations in the frictional force between the corrugated sheets DS. can be reduced. Therefore, when the front end of the batch BT is brought into contact with the stopper member 31, slippage between the corrugated cardboard sheets DS will occur stably at the boundary immediately below the stopper member 31.

Further, a pressing roller 72 is applied to the stopper member 31 that has lowered the front end of the batch BT, which is being moved downstream at a predetermined speed by the discharge conveyor 2, to a lowering position KP corresponding to a predetermined dividing position BP. By pressing and abutting the upper surface of the batch BT on the upstream side, the sliding between the corrugated cardboard sheets DS is prevented at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the predetermined dividing position BP. The corrugated cardboard sheets DS that are stably generated and stacked below the stopper member 31 can be moved downstream at the same speed according to the law of inertia. As a result, the batch BT in which a plurality of corrugated cardboard sheets DS are stacked vertically is divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31 in a predetermined manner. Stable division can be performed at position BP.

Furthermore, according to the present batch dividing method, even if the thickness d1 of the batch BT changes, the pressing roller 72 can press the top surface of the batch BT so that the thickness corresponds to the lowered position KP of the stopper member 31. Accordingly, the dividing position BP of the batch BT can be maintained at a constant position. Therefore, the batch BT can be divided more stably at the predetermined division position BP.

Therefore, according to the batch dividing method according to the third embodiment, it is possible to provide a corrugated sheet batch dividing method that can stably divide the batch BT of vertically stacked corrugated sheets DS at the predetermined dividing position BP. .

Moreover, it is preferable that the batch division step ST4 includes a temporary stop step ST41 in which the batch BT is moved again after the movement of the batch BT is temporarily stopped at a stop position TP on the upstream side of the stopper member 31. According to the temporary stop step ST41, after the movement of the batch BT is temporarily stopped on the upstream side of the stopper member 31, the stopper member 31 is moved to the appropriate lowering position KP corresponding to the predetermined division position BP while moving the batch BT again. The pressure roller 72 can be lowered, and the pressure roller 72 can be moved to an appropriate pressure height. Therefore, the batch BT can be stably divided at the even more accurate division position BP.

Further, at least one batch BT is disposed upstream of the stopper member 31 and between the front end and the rear end of the discharge conveyor 2, depending on the longitudinal length of the batch BT to be divided. The lifter device 5 (5A, 5B) includes a lifter member 51 that contacts the lower surface and a drive mechanism 52 that moves the lifter member 51 up and down. is raised upward from the discharge conveyor 2, and of the two small batches SBT, the upper small batch SBT2 that contacts the stopper member 31 is supported in cooperation with the lower small batch SBT1 that does not contact the stopper member 31. It is preferable to include a small batch support step ST43.

According to the small batch support step ST43, the lifter member 51 supports the upper small batch SBT2 on the upstream side of the lower small batch SBT1, so 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 at the dividing boundary surface between the lower surface of the upper small batch SBT2 and the upper surface of the lower small batch SBT1. Therefore, it is possible to suppress the positional shift of the corrugated paperboard sheet DS on the upper surface of the lower small batch SBT1, and it is possible to stably divide the batch BT.

<Modified example>
It goes without saying that the embodiments described above can be modified in various ways without changing the gist of the present invention. For example, in the first embodiment, the stopper member 31 includes a vertical wall portion 311 formed vertically on the upstream side, a vertical wall portion 313 formed vertically on the downstream side, both vertical wall portions 311, 313 and a horizontal wall portion 312 that horizontally connects the lower ends thereof, and has a generally U-shaped cross section that is open at the top as a whole, but it is not necessarily limited to the above configuration. For example, as shown in FIG. 21, the horizontal wall portion 312 is changed to a vibration mechanism 34 (34A, 34B), and the stopper members 31B, 31C are equipped with vibration mechanisms 34A, 34B that vibrate the stopper members 31B, 31C. It's okay.

For example, the vibration mechanism 34A shown in FIG. 21A includes a movable part 34A1 fixed to the vertical wall part 311 on the upstream side and in which a plurality of magnets are arranged, and a movable part 34A1 fixed to the vertical wall part 313 on the downstream side. An electric cylinder or the like can be used, which includes a fixing portion 34A2 having a magnetic circuit that slightly vibrates in the front-rear direction (conveying direction). For example, the vibration mechanism 34B shown in FIG. 21(B) includes a movable part 34B1 having a piezo element fixed to the vertical wall part 311 on the upstream side, and a movable part 34B1 fixed to the vertical wall part 313 on the downstream side. A piezo stage or the like can be used, which includes a fixed part 34B2 having a rail part that slightly vibrates in the vertical direction.

The vibration mechanism 34 (34A, 34B) corrects the positional deviation between the corrugated cardboard sheets DS due to the rebound of the batch BT that has come into contact with the vibrating stopper members 31B, 31C by slightly vibrating in the front-back direction or the vertical direction. Therefore, it is possible to effectively avoid misalignment of the corrugated cardboard sheets DS in the divided small batch SBT.

<Actions and effects of this embodiment>
As described above in detail, according to the corrugated sheet batch dividing apparatus 10 according to the first embodiment, a plurality of corrugated sheets DS formed into boxes in the corrugated sheet box making machine 1 are stacked in the vertical direction. A corrugated sheet batch dividing apparatus 10 that divides a batch BT vertically at a predetermined dividing position BP to form a small batch SBT with a small number of laminated sheets, comprising: a discharge conveyor 2 that discharges the batch BT to the downstream side; A stopper member 31 disposed above the downstream side of the discharge conveyor 2 and in contact with the front end of the batch BT, a stopper elevating device 3 that moves the stopper member 31 up and down, and a stopper member 31 arranged on the upstream side of the stopper member 31 that touches the top surface of the batch BT. It includes a pressing member 72 that presses downward, and a pressing member lifting device 7A that moves the pressing member 72 up and down, and also includes a front end portion of the batch BT that moves downstream at a predetermined speed by the discharge conveyor 2, and a stopper lifting device. 3, the stopper member 31 is lowered to the lowered position KP corresponding to the split position BP, and the pressing member lifting device 7 is activated to bring the pressing member 72 into contact with the upper surface of the batch BT while pressing it, The batch BT is divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31.

Therefore, according to the first embodiment, the front end of the batch BT and the stopper member 31 are brought into contact with each other while the pressing member 72 presses the upper surface of the batch BT on the upstream side of the stopper member 31. Even if there is a slight warp in the vertical direction of the corrugated sheet DS, the warp can be corrected before dividing, and the vertically adjacent corrugated sheets DS can be brought into almost uniform contact with each other, reducing the frictional force between the corrugated sheets DS. It is possible to reduce the variation in Therefore, when the front end of the batch BT is brought into contact with the stopper member 31, the sliding between the corrugated sheets DS will occur at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the predetermined dividing position BP. , will occur stably.

Further, the pressing member 72 presses the stopper member 31 that has lowered the front end of the batch BT, which is being moved downstream at a predetermined speed by the discharge conveyor 2, to the lowering position KP corresponding to the predetermined division position BP. By pressing and abutting the upper surface of the batch BT on the upstream side, the sliding between the corrugated cardboard sheets DS is prevented at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the predetermined dividing position BP. The corrugated cardboard sheets DS that are stably generated and stacked below the stopper member 31 can be moved downstream at the same speed according to the law of inertia. As a result, the batch BT in which a plurality of corrugated cardboard sheets DS are stacked vertically is divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31 in a predetermined manner. Stable division can be performed at position BP.

Therefore, according to the first embodiment, it is possible to provide a corrugated sheet batch dividing apparatus 10 that can stably divide a batch BT of vertically stacked corrugated cardboard sheets DS at a predetermined dividing position BP.

Further, according to the first embodiment, the upstream side of the stopper member 31 is provided with the measuring device 61 that measures the thickness d1 of the batch BT, and the stopper lifting device 3 is configured to measure the thickness d1 of the batch BT measured by the measuring device 61. Since the lowering position KP of the stopper member 31 is adjusted based on the thickness d1, even if there is variation in the thickness of the batch BT, the position KP of the stopper member 31 is adjusted according to the thickness d1 of the batch BT measured on the upstream side of the stopper member 31. The lowered position KP of the stopper member 31 can be adjusted. Therefore, the batch can be divided more stably at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the thickness d1 of the batch BT.

Further, according to the first embodiment, the measuring device 61 measures the thickness d1 of only the batch BT to be divided first during production of the same order, and the stopper lifting device 3 measures the thickness d1 of only the batch BT to be divided first. Since the lowering position KP of the stopper member 31 for the first batch BT to be divided and the second and subsequent batches to be divided is set based on the thickness d1 of the batch BT, the thickness of the batch BT can be determined at the start of production of the same order. It is only necessary to measure d1, and the time loss associated with measurement can be minimized. Furthermore, since the lowering position KP of the stopper member 31 for the first batch BT to be divided and the second and subsequent batches BT is set based on the thickness d1 of the first batch BT to be divided, the lowering position of the stopper member 31 is set. The time loss for adjusting KP can also be minimized. Therefore, the batch BT can be stably divided at predetermined dividing positions while reducing each time loss and increasing the productivity of the batch dividing apparatus 10.

Further, according to the first embodiment, the discharge conveyor 2 temporarily stops the movement of the batch BT at the stop position TP on the upstream side of the stopper member 31 and then moves the batch BT again. After temporarily stopping the movement of the batch BT on the more upstream side, while moving it again, the stopper lifting device 3 is operated to lower the stopper member 31 to an appropriate lowering position KP corresponding to the predetermined division position BP. In addition, the pressing member 72 can be moved to an appropriate pressing height by operating the pressing member elevating device 7A. Therefore, the batch BT can be stably divided at the even more accurate division position BP.

Further, according to the first embodiment, during production of the same order, the discharge conveyor 2 temporarily stops the movement of the batch BT at the stop position TP for only the batch BT to be divided first, and then Since the BT is moved again, the movement of the batch BT is only temporarily stopped when production of the same order is started, and the time loss associated with the temporary stop can be minimized. Therefore, the batch BT can be stably divided at the predetermined dividing position BP while reducing time loss and increasing the productivity of the batch dividing apparatus 10.

Further, according to the first embodiment, when the pressing member lifting device 7A divides the batch BT, the thickness d1 of the divided batch BT corresponds to the lowered position KP of the stopper member 31. Since the pressing member 72 presses the upper surface of the batch BT, even if the thickness d1 of the batch BT changes, the pressing member 72 presses the top surface of the batch BT so that the thickness corresponds to the lowered position KP of the stopper member 31. By pressing the upper surface of the batch BT, the dividing position BP of the batch BT can be maintained at a constant position. Therefore, the batch BT can be divided more stably at the predetermined division position BP.

Further, according to the first embodiment, the stopper member 31 is provided with the vibration mechanism 34 (34A, 34B) that vibrates the stopper member 31, so that when the stopper member 31 vibrates, the stopper member 31 By correcting the positional deviation between the corrugated sheets DS due to the rebound of the batch BT that has come into contact with the small batch SBT, it is possible to effectively avoid misalignment of the corrugated sheets DS in the divided small batch SBT. Thereby, the moving speed of the batch BT by the discharge conveyor 2 can be increased, and the productivity of the batch dividing device 10 can be further improved.

Moreover, according to the counter ejector 20 according to the second embodiment, the batch BT in which a plurality of corrugated sheets DS manufactured in the corrugated sheet box making machine 1 are stacked in the vertical direction is vertically stacked at the predetermined dividing position BP. A counter ejector 20 includes a batch dividing device 10 for dividing corrugated cardboard sheets to form small batches SBT with a small number of stacked sheets, and includes a batch forming device 15 on the upstream side of the batch dividing device 10. includes a ledge 151 that is movable in the horizontal direction in order to separate the corrugated sheets DS stacked in a predetermined storage area to form batches BT of a predetermined number of sheets; A delivery conveyor 152 for sending out the batch BT loaded with the number of corrugated cardboard sheets DS in the delivery direction, and a delivery conveyor 152 for transporting the batch BT from a predetermined storage area to the delivery conveyor 152 on which the batch BT is placed. The batch dividing device 10 includes an elevator 153 that performs an ascending and descending motion, and a discharge conveyor 2 that discharges the batch BT to the downstream side, and a discharge conveyor 2 that is disposed above the discharge conveyor 2 on the downstream side and is in contact with the front end of the batch BT. A contacting stopper member 31, a stopper lifting device 3 that moves the stopper member 31 up and down, a pressing member 72 that presses the upper surface of the batch BT downward on the upstream side of the stopper member 31, and a pressing member that moves the pressing member 72 up and down. The front end of the batch BT is moved downstream at a predetermined speed by the discharge conveyor 2, and the stopper lifting device 3 is operated to lower the front end of the batch BT to the lowering position KP corresponding to the dividing position BP. The press member lifting device 7A is operated to bring the press member 72 into contact with the upper surface of the batch BT in a pressed state, and the batch BT is brought into contact with the lower small batch SBT1 that does not contact the stopper member 31. , and an upper small batch SBT2 that abuts the stopper member 31.

Therefore, according to the second embodiment, by providing the batch forming device 15 on the upstream side of the batch dividing device 10, batches BT having different numbers of sheets can be formed while increasing productivity. For example, if a small batch SBT with a small number of sheets is produced by the batch forming device 15, there will be a lot of time loss due to the vertical movement of the elevator 153, etc., and the production speed will be slow. is formed and then divided into small batches SBT with a small number of sheets by the batch dividing device 10 on the downstream side, thereby reducing the time loss associated with the vertical movement of the elevator 153 and increasing the production speed.

In addition, in the batch dividing device 10, the front end of the batch BT is brought into contact with the stopper member 31 while the pressing member 72 presses the top surface of the batch BT on the upstream side of the stopper member 31, so that the corrugated cardboard sheet of the batch BT is brought into contact with the front end of the batch BT. Even if the DS has a slight warp in the vertical direction, the warp can be corrected before it is divided, and the vertically adjacent corrugated sheets DS can be brought into almost uniform contact with each other, thereby reducing variations in the frictional force between the corrugated sheets DS. can be reduced. Therefore, when the front end of the batch BT is brought into contact with the stopper member 31, slippage between the corrugated cardboard sheets DS will occur stably at the boundary immediately below the stopper member 31.

Further, the pressing member 72 presses the stopper member 31 that has lowered the front end of the batch BT, which is being moved downstream at a predetermined speed by the discharge conveyor 2, to the lowering position KP corresponding to the predetermined division position BP. By pressing and abutting the upper surface of the batch BT on the upstream side, the sliding between the corrugated cardboard sheets DS is prevented at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the predetermined dividing position BP. The corrugated cardboard sheets DS that are stably generated and stacked below the stopper member 31 can be moved downstream at the same speed according to the law of inertia. As a result, the batch BT in which a plurality of corrugated cardboard sheets DS are stacked vertically is divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31 in a predetermined manner. Stable division can be performed at position BP.

Therefore, according to the second embodiment, a counter ejector 20 is provided that includes a batch dividing device 10 for corrugated cardboard sheets DS that can stably divide a batch BT of vertically stacked corrugated cardboard sheets DS at a predetermined dividing position BP. be able to.

Furthermore, according to the corrugated cardboard sheet batch dividing method according to the third embodiment, a batch BT in which a plurality of corrugated cardboard sheets DS manufactured in the corrugated sheet box making machine 1 are stacked vertically is placed at a predetermined dividing position BP. A corrugated board sheet batch dividing method in which a small batch SBT with a small number of laminated sheets is formed by dividing the corrugated paperboard sheet vertically, the batch forming step ST1 forming a batch BT, and the batch BT formed in the batch forming step ST1 being placed on the downstream side. A delivery step ST2 in which the delivery conveyor 152 sends out the batch to the delivery conveyor 2 to be moved, and a stopper member 31 that is arranged above the downstream side of the delivery conveyor and divides the batch BT sent out in the delivery step ST2, correspond to the division position BP. a stopper member that positions the batch BT, which is sent to the discharge conveyor 2 in the delivery step ST2 and moves downstream at a predetermined speed by the discharge conveyor 2, to the lower position KP; 31 to divide the batch BT into two upper and lower small batches SBT, and when dividing the batch BT in the batch division step ST4, the thickness d1 of the batch BT to be divided is set in the positioning step ST3. A batch pressing step ST42 is provided in which the pressing member 72 presses the upper surface of the batch BT so that the thickness corresponds to the lowered position KP of the stopper member 31 positioned at .

Therefore, according to the third embodiment, the front end of the batch BT and the stopper member 31 are brought into contact with each other while the pressing member 72 presses the upper surface of the batch BT on the upstream side of the stopper member 31. Even if there is a slight warp in the vertical direction of the corrugated sheet DS, the warp can be corrected before dividing, and the vertically adjacent corrugated sheets DS can be brought into almost uniform contact with each other, reducing the frictional force between the corrugated sheets DS. It is possible to reduce the variation in Therefore, when the front end of the batch BT is brought into contact with the stopper member 31, slippage between the corrugated cardboard sheets DS will occur stably at the boundary immediately below the stopper member 31.

Further, the pressing member 72 presses the stopper member 31 that has lowered the front end of the batch BT, which is being moved downstream at a predetermined speed by the discharge conveyor 2, to the lowering position KP corresponding to the predetermined division position BP. By pressing and abutting the upper surface of the batch BT on the upstream side, the sliding between the corrugated cardboard sheets DS is prevented at the boundary immediately below the stopper member 31 that has been lowered to the lowered position KP corresponding to the predetermined dividing position BP. The corrugated cardboard sheets DS that are stably generated and stacked below the stopper member 31 can be moved downstream at the same speed according to the law of inertia. As a result, the batch BT in which a plurality of corrugated cardboard sheets DS are stacked vertically is divided into a lower small batch SBT1 that does not contact the stopper member 31 and an upper small batch SBT2 that contacts the stopper member 31 in a predetermined manner. Stable division can be performed at position BP.

Furthermore, according to the third embodiment, even if the thickness d1 of the batch BT changes, the pressing member 72 presses the top surface of the batch BT so that the thickness corresponds to the lowered position KP of the stopper member 31. By doing so, the dividing position BP of the batch BT can be maintained at a constant position. Therefore, the batch BT can be divided more stably at the predetermined division position BP.

Therefore, according to the third embodiment, it is possible to provide a corrugated sheet batch dividing method that can stably divide the batch BT of vertically stacked corrugated cardboard sheets DS at the predetermined dividing position BP.

According to the third embodiment, the batch dividing step ST4 includes a temporary stopping step of temporarily stopping the movement of the batch BT at the stop position TP on the upstream side of the stopper member 31, and then moving the batch BT again. Since the ST41 is provided, after the movement of the batch BT is temporarily stopped on the upstream side of the stopper member 31, the stopper member 31 is lowered to the appropriate lowering position KP corresponding to the predetermined division position BP while moving the batch again. In addition, the pressing member 72 can be moved to an appropriate pressing height. Therefore, the batch can be stably divided at the even more accurate dividing position BP.

According to the third embodiment, in the batch dividing step ST4, the lifter member 51 is raised above the discharge conveyor 2 on the upstream side of the stopper member 31, and one of the two small batches SBT is placed on the stopper member 31. Since the small batch support step ST43 is provided to support 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, the lifter member 51 is placed upstream of the lower small batch SBT1. Since the upper small batch SBT2 is supported by the side, 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 at the dividing boundary surface between the lower surface of the upper small batch SBT2 and the upper surface of the lower small batch SBT1. Therefore, it is possible to suppress the positional shift of the corrugated paperboard sheet DS on the upper surface of the lower small batch SBT1, and it is possible to stably divide the batch BT.

The present invention provides a corrugated sheet batch dividing device that vertically divides a batch of laminated corrugated sheets in a corrugated sheet box making machine to form small batches with a small number of laminated sheets, a counter ejector including the batch dividing device, and a counter ejector including the batch dividing device. It can be used as a batch division method for corrugated cardboard sheets.

1 Corrugated sheet box making machine 2 Discharge conveyor 3 Stopper lifting device 4 Small batch pressing member 5 Lifter device 7A Pressing member lifting device 10 Batch dividing device 15 Batch forming device 20 Counter ejector 31 Stopper member 34 Vibration mechanism 51 Lifter member 61 Measuring device 72 Press roller (press member)
151 Ledge 152 Delivery conveyor 153 Elevator BT Batch BP Division position DS Cardboard sheet KP Lowering position ST1 Batch forming step ST2 Delivery step ST3 Positioning step ST4 Batch division step ST41 Temporary stop step ST42 Batch pressing step ST43 Small batch support step SBT Small batch SBT1 Downward Small batch SBT2 Upper small batch TP Stopping position d1 Thickness

Claims (11)

This is a corrugated sheet batch dividing device that divides a batch of multiple corrugated sheets vertically stacked vertically at a predetermined dividing position to form small batches with a small number of laminated sheets. There it is,
a discharge conveyor for discharging the batch to the downstream side; a stopper member arranged above the downstream side of the discharge conveyor and abutting the front end of the batch; a stopper lifting device for vertically moving the stopper member; A pressing member that presses the upper surface of the batch downward on the upstream side, and a pressing member lifting device that moves the pressing member up and down,
The pressing member lifts and lowers the front end of the batch that is moved downstream at a predetermined speed by the discharge conveyor and the stopper member that has been lowered to a lowered position corresponding to the dividing position by operating the stopper lifting device. The device is operated so that the pressing member contacts the upper surface of the batch in a pressed state, and separates the batch into a lower small batch that does not contact the stopper member and an upper small batch that contacts the stopper member. A batch dividing device for corrugated cardboard sheets. The corrugated sheet batch dividing apparatus according to claim 1,
A measuring device for measuring the thickness of the batch is provided upstream of the stopper member,
The batch dividing device for corrugated cardboard sheets, wherein the stopper lifting device adjusts the lowering position of the stopper member based on the thickness of the batch measured by the measuring device. The corrugated sheet batch dividing apparatus according to claim 2,
The measuring device measures the thickness of only the first batch to be divided during production of the same order, and the stopper lifting device measures the thickness of the first batch to be divided based on the thickness of the first batch to be divided. A batch dividing apparatus for corrugated cardboard sheets, characterized in that a lowering position of the stopper member is set for a batch to be divided and a second batch to be divided and subsequent batches. In the corrugated sheet batch dividing apparatus according to any one of claims 1 to 3,
The batch dividing apparatus for corrugated cardboard sheets, wherein the discharge conveyor temporarily stops movement of the batch at a stop position upstream of the stopper member, and then moves the batch again. The corrugated sheet batch dividing apparatus according to claim 4,
The discharge conveyor temporarily stops movement of the batch at the stop position for only the first batch to be divided during production of the same order, and then moves the batch again. batch splitting equipment. In the corrugated sheet batch dividing apparatus according to any one of claims 1 to 5,
The pressing member elevating device is configured to raise and lower the upper surface of the batch with the pressing member so that, when dividing the batch, the thickness of the divided batch corresponds to the lowered position of the stopper member. A corrugated sheet batch dividing device characterized by pressing. In the corrugated sheet batch dividing apparatus according to any one of claims 1 to 6,
A corrugated sheet batch dividing apparatus, wherein the stopper member is provided with a vibration mechanism that vibrates the stopper member. A corrugated sheet batch dividing device that vertically divides a batch of multiple corrugated sheets stacked vertically at a predetermined dividing position to form small batches with a small number of sheets stacked in a corrugated sheet box making machine. A counter ejector comprising:
A batch forming device is provided upstream of the batch dividing device,
The batch forming device includes a ledge that can move forward and backward in a horizontal direction in order to separate the corrugated cardboard sheets stacked in a predetermined storage area to form a batch of a predetermined number of sheets, and a ledge located below the predetermined storage area. a delivery conveyor for sending out the batch in the delivery direction on which the batch is placed and loaded with a predetermined number of corrugated sheets; It has an elevator that moves up and down for transportation,
The batch dividing device includes a discharge conveyor that discharges the batch to the downstream side, a stopper member that is disposed above the discharge conveyor on the downstream side and comes into contact with the front end of the batch, and a stopper lifting device that moves the stopper member up and down. and a pressing member that presses the upper surface of the batch downward on the upstream side of the stopper member, and a pressing member lifting device that moves the pressing member up and down,
The pressing member lifts and lowers the front end of the batch that is moved downstream at a predetermined speed by the discharge conveyor and the stopper member that has been lowered to a lowered position corresponding to the dividing position by operating the stopper lifting device. The device is operated so that the pressing member contacts the upper surface of the batch in a pressed state, and separates the batch into a lower small batch that does not contact the stopper member and an upper small batch that contacts the stopper member. A counter ejector characterized by being divided into. A corrugated sheet batch dividing method in which a batch of multiple corrugated sheets stacked vertically in a box made by a corrugated sheet box making machine is divided vertically at a predetermined dividing position to form small batches with a small number of sheets stacked. There it is,
a batch forming step of forming the batch;
a sending step of sending out the batch formed in the batch forming step by a sending conveyor to a discharge conveyor that moves the batch downstream;
a positioning step of positioning a stopper member disposed above the downstream side of the discharge conveyor and dividing the batch sent out in the sending step to a lowered position corresponding to the dividing position;
The batch that is sent to the discharge conveyor in the sending step and is moved downstream at a predetermined speed by the discharge conveyor is brought into contact with the stopper member positioned at the lowered position, and is separated into two small batches, upper and lower. a batch splitting step to split into
When dividing the batch in the batch dividing step, the pressing member is used to divide the batch so that the thickness of the divided batch corresponds to the lowered position of the stopper member positioned in the positioning step. A method for dividing batches of corrugated cardboard sheets, comprising: a batch pressing step of pressing the upper surface of the batch. The method for batch dividing corrugated cardboard sheets according to claim 9,
The corrugated cardboard sheet is characterized in that the batch dividing step includes a temporary stopping step of temporarily stopping the movement of the batch at a stop position upstream of the stopper member, and then moving the batch again. Batch splitting method. In the method for dividing batches of corrugated cardboard sheets according to claim 9 or 10,
In the batch dividing step, a lifter member is raised above the discharge conveyor on the upstream side of the stopper member, and of the two small batches, the upper small batch that comes into contact with the stopper member is moved to the stopper member. A method for dividing batches of corrugated cardboard sheets, comprising: a small batch support step that cooperates with and supports lower small batches that are not in contact with each other.

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