JP2004217390A - Batch forming method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a batch forming method capable of stacking the set number of small size boxes for delivery even if they are fed from a folder gluer at a high speed. <P>SOLUTION: Two pairs of paper delivery ledges 20a and 20b for supporting a box A, which is delivered from the folder gluer and received by a front stopper 8 and fallen, and a pair of paper supply ledges 50a and 50b for supporting a following box A when a stack S on the paper delivery ledge 20a for supporting the box A reaches the set number of sheets are provided. One paper delivery ledge 20a receives the box A delivered from the folder gluer 1 to form the stack, and when a batch of the delivered boxes is formed on the paper delivery ledge 20a, one paper feeding ledge 50a is lowered to receive the box A, and when the paper delivery ledge 20a is lowered to the lowest position and stopped, the other paper delivery ledge 20b is moved forward, and a pusher 23 provided in the paper delivery ledge 20b extrudes the batch B on the paper delivery ledge 20a, and supports the stack on the other paper supply ledge 50a, which is moved backward, to continue stacking the boxes. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a batch forming method in which flat boxes discharged from a folder gluer are stacked and discharged every set number of sheets.
[0002]
[Prior art]
It is common practice to form batches with a counter ejector. As this type of counter ejector, one described in Japanese Patent Application Laid-Open No. 2000-127262 has been conventionally known.
[0003]
In the counter ejector described in the above publication, the flat box discharged from the folder gluer is received by the front stopper, the boxes hitting the front stopper are received by the elevator and sequentially stacked, and the stack on the elevator is When the set number is reached and a batch is formed, the ledge waiting on the elevator is lowered to receive the first box in which the next stack is formed, and when a predetermined number of boxes are supported on the ledge, Delivery is performed on the auxiliary ledge, and after the delivery, the ledge is returned to the standby position.
[0004]
When the boxes are stacked on the ledge, the elevator is lowered to the lower limit position, the stack is sent to the discharge conveyor at the lowering stop position, and after the delivery, the elevator is raised and stacked with the auxiliary ledge. The delivered boxes are delivered, and after the delivery, the auxiliary ledge is moved backward to sequentially accumulate the boxes on the elevator.
[0005]
[Problems to be solved by the invention]
By the way, in the conventional counter ejector, since the batch on the elevator is pushed out onto the discharge conveyor by the reciprocating motion of the pusher, the empty elevator cannot be raised unless the pusher is retracted. The cycle time is long. For this reason, when small boxes are sent out from the folder gluer at high speed, more than necessary boxes are collected on the auxiliary ledge, and subsequent boxes cannot collide with the previously sent out boxes. Occurs.
[0006]
The problem of the present invention is that even if small boxes are sent out from the folder gluer at a high speed, the boxes can be stacked and sent out at a set number of times. It is to provide a forming method.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, in the present invention, a front stopper that receives a box discharged from the folder gluer, and a vertically moving and reciprocating motion that receives a box that falls along the front stopper and forms a stack are possible. Two sets of discharge ledges and stacks on one discharge ledge reach a set number of sheets, and when a batch is formed, it is possible to move up and down and reciprocate to lower the box drop path and support the next box Two sets of paper feed ledges and a stack conveyor discharge conveyor provided at a lower limit stop position of the paper discharge ledges, and a pusher is provided at the tip of the two sets of paper discharge ledges, With the ledge and one of the paper feed ledges facing the drop path of the box, the other paper discharge ledge and the other paper feed ledge are made to stand by in a position where they are retracted from the box drop path, and one paper discharge ledge is lowered to the lower limit position. And While one paper feed ledge receives the next box, the other paper ejection ledge is advanced to a position facing the paper feed path, and one paper feed ledge is moved backward to the downstream side of the front stopper to move forward. A configuration was adopted in which the batches were pushed onto the discharge conveyor at the discharge ledge and the stack on one of the paper supply ledges was received and the stacking of the boxes was continued.
[0008]
With the above configuration, when the discharge ledge at the standby position is advanced to the position where it faces the drop path of the box, the batch on the other discharge ledge is placed on the discharge conveyor by the pusher provided on the discharge ledge. It can be pushed out, and multiple boxes supported by the paper feed ledge can be supported by the paper discharge ledge, and the stacking of the boxes can be continued. Even if it is sent out at a high speed, it can sufficiently cope.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a counter ejector used in a batch forming method. As shown in the figure, on the downstream side of the discharge end of the folder gluer 1, there is provided a delivery device 2 that forwards the boxes A that are successively discharged from the folder gluer 1 one by one.
[0010]
The delivery device 2 includes an upper conveyor 3 that contacts the upper surface of the box A, a lower conveyor 4 that sandwiches the box A with the upper conveyor 3, and a first clamping roll 5 that is provided on the upstream side of the lower conveyor 4. And a second sandwiching roll 6 provided on the downstream side of the lower conveyor 4, a guide plate 7 is provided between the lower conveyor 4 and the second sandwiching roll 6, and the upper conveyor 3 and the lower conveyor 4 are indicated by arrows The first clamping roll 5 and the second clamping roll 6 are rotated in the direction of the arrow while the box A is sent out downstream.
[0011]
A front stopper 8 is provided on the downstream side of the delivery device 2 to receive the box A delivered from the delivery device 2.
[0012]
As shown in FIG. 2, the front stopper 8 is provided with a plurality of slots 9 extending upward from the lower end thereof at intervals in the left-right direction. The front stopper 8 is supported so as to be movable along two guide rods 10 arranged in parallel, and is positioned at a position corresponding to the size of the box A by the rotation of a screw rod 11 provided between the guide rods 10. Adjusted.
[0013]
The first paper discharge ledge 20a and the second paper discharge ledge 20b that receive the box A are alternately arranged in the drop path of the box A that is received by the front stopper 8 and falls.
[0014]
3 to 5 show details of the first discharge ledge 20a and the second discharge ledge 20b. Here, since the first discharge ledge 20a and the second discharge ledge 20b have the same configuration, the first discharge ledge 20a will be described below, and the same reference numerals are given to the same portions of the second discharge ledge 20b. A description thereof will be omitted. The first discharge ledge 20a fixes the rear ends of a plurality of support bars 22 arranged in a comb-like shape on a lifting frame 21 that is long in the direction intersecting the delivery direction of the box A delivered from the delivery device 2. In addition, a pusher 23 is provided downward at the tip of each support bar 22.
[0015]
The elevating frame 21 has a slide plate 24 at its end, and the slide plate 24 is supported so as to be movable up and down along a pair of guides 26 provided on a carriage 25 and extending in the vertical direction.
[0016]
Each of the first discharge ledge 20a and the second discharge ledge 20b is moved up and down independently by the lifting device 30.
[0017]
The lifting device 30 is provided with a rack 31 extending in the vertical direction on each carriage 25, and a pinion 32 meshing with the rack 31 is rotated by a motor 33 supported by the lifting frame 21.
[0018]
The carriage 25 that supports the first discharge ledge 20 a to be movable up and down and the carriage 25 that supports the second discharge ledge 20 b to move up and down are arranged opposite to each other. It is supported so as to be movable along two guides 35 which are attached to each other in the vertical direction.
[0019]
The two guides 35 are sent out from the delivery device 2 and extend long in the delivery direction of the box A, and the reciprocating carriage 25 movable along the guide 35 is reciprocated by the reciprocating device 40.
[0020]
In the reciprocating device 40, a rack 41 parallel to the guide 35 is attached to the carriage 25, and a pinion 42 meshing with the rack 41 is rotated by a motor 44 supported by a side frame 34 via a bracket 43, thereby the carriage 25. To move.
[0021]
In the first discharge ledge 20a and the second discharge ledge 20b, the position where the box A that falls along the front stopper 8 is retracted upstream from the drop path is set as a standby position, and the first discharge ledge 20a and the second discharge ledge 20b stand by at the standby position. The paper ledge 20a or the second paper discharge ledge 20b is moved forward by the operation of the reciprocating device 40 so as to face the fall path of the box A.
[0022]
The first paper discharge ledge 20 a or the second paper discharge ledge 20 b facing the drop path of the box A is lowered by the operation of the lifting device 30. In addition, the first discharge ledge 20a or the second discharge ledge 20b that stops at the lower limit position is retracted upstream by the operation of the reciprocating device 40 to be retracted from the falling path of the box A and the lifting device 30. Is lifted by the operation of, and returned to the standby position.
[0023]
As shown in FIG. 1, a first paper feed ledge 50 a and a second paper feed ledge 50 b are provided on the downstream side of the delivery device 2. The first paper feed ledge 50 a and the second paper feed ledge 50 b are arranged so as to support the box A discharged from the feeding device 2 by alternately facing the dropping path of the box A falling along the front stopper 8. .
[0024]
6 to 8 show the first paper feed ledge 50a and the second paper feed ledge 50b. Since the first paper feed ledge 50a and the second paper feed ledge 50b have the same configuration, the first paper feed ledge 50a will be described below, and the same reference numerals are given to the same parts of the second paper feed ledge 50b. Therefore, the description is omitted.
[0025]
The first paper feed ledge 50 a includes a plurality of support bars 52 arranged in a comb-like shape on a bar support member 51 that is long in a direction intersecting the delivery direction of the box A delivered from the delivery device 2, and the support bars 52 Each end of the parallel fixing bar 53 is fixed. The plurality of support bars 52 and the fixing bar 53 can be inserted into the slots 9 formed in the front stopper 8.
[0026]
The bar support member 51 has a slide frame 55 at its end, and the slide frame 55 is supported so as to be movable up and down along a guide 57 that is provided on a carriage 56 and that is long in the vertical direction.
[0027]
A presser bar 58 is provided below the fixed bar 53. The presser bar 58 is supported by an openable / closable X-shaped link 60 in which two links are combined in an X-shape and the intersection is connected by a pin 59, and the cylinder 61 supported by the fixed bar 53 operates. It can be moved up and down.
[0028]
Each of the first paper feed ledge 50 a and the second paper feed ledge 50 b is moved up and down by the operation of the lifting device 70. The elevating device 70 attaches a rack 71 that is long in the vertical direction to the slide frame 55, and rotates a pinion 72 that meshes with the rack 71 by driving a motor 73 supported by a carriage 56, thereby causing the first paper feed ledge 50 a and the second paper feed ledge 50 a and The sheet feeding ledge 50b is moved up and down.
[0029]
The carriage 56 that supports the first paper feed ledge 50a to be movable up and down and the carriage 56 that supports the second paper feed ledge 50b to move up and down are opposed to each other. It is supported so as to be movable along two guides 74 which are attached to each other and are opposed to each other in the vertical direction.
[0030]
The two guides 74 extend in the moving direction of the box A sent out by the sending device 2, and the carriage 56 movably supported by the guide 74 is reciprocated by a reciprocating device 80.
[0031]
The reciprocating device 80 fixes a rack 81 parallel to the guide 74 to the lower part of the carriage 56, and moves the carriage 56 by rotating a pinion 82 meshing with the rack 81 by a motor 83 supported by the side frame 34. I try to let them.
[0032]
The first paper supply ledge 50a and the second paper supply ledge 50b are set at a standby position where the box A falling along the front stopper 8 faces the drop path, and the standby position is the box A sent out by the delivery device 2. Slightly higher.
[0033]
The first paper feed ledge 50a and the second paper feed ledge 50b are lowered by the operation of the elevating device 70, and the lower limit position thereof is substantially the same level as the lower end of the front stopper 8, and the paper discharge ledge 20a and The position is slightly below the standby position of the second discharge ledge 20b.
[0034]
The first paper feed ledge 50 a and the second paper feed ledge 50 b that stop at the lower limit position are moved backward by the operation of the reciprocating device 80, and the reverse stop position is on the downstream side of the front stopper 8.
[0035]
Further, the first paper feed ledge 50 a and the second paper feed ledge 50 b that are in the reverse stop are moved up by the operation of the lifting device 70 and returned to the standby position by the operation of the reciprocating device 80.
[0036]
As shown in FIG. 1, the supply end of the discharge conveyor 90 faces the lower limit stop position of the first discharge ledge 20a and the second discharge ledge 20b in the box dropping path, A presser device 91 that presses the upper surface of the batch B conveyed by the discharge conveyor 90 is provided.
[0037]
As shown in FIG. 3, the discharge conveyor 90 includes a double-row belt conveyor 90a and a double-row roller conveyor 90b. On the other hand, as shown in FIG. 1, the presser device 91 is composed of a number of presser rollers 91a that can rotate.
[0038]
The counter ejector shown in the embodiment has the above structure, and FIGS. 9 to 13 show the operation thereof.
[0039]
FIG. 9 shows a state in which the boxes A that are continuously fed from the feeding device 2 one by one, received by the front stopper 8 and dropped are sequentially supported by the first paper discharge ledge 20a facing the dropping path. The first paper discharge ledge 20 a is moved downward according to the stacking speed of the box A by the operation of the lifting device 30.
[0040]
When the boxes A are stacked, the first paper feed ledge 50a is held on the fall path of the box A at a standby position that does not hinder the movement of the box A sent out from the feeding device 2.
[0041]
On the other hand, the second paper discharge ledge 20b is held at a standby position for retreating upstream from the fall path of the box A.
[0042]
A detection sensor (not shown) for detecting the passage of the box A is provided in the conveyance path of the box A conveyed by the delivery device 2, and a signal output from the detection sensor is input to a counter (not shown) and counted. The
[0043]
When a predetermined number of boxes A are sent out from the delivery device 2 and the boxes A are stacked on the stack S of the first discharge ledge 20a to form a batch B, the lifting device 70 is operated to operate the first. The paper feed ledge 50a is lowered and held at the lower limit position as shown in FIG. For this reason, the box A delivered by the delivery device 2 is supported by the first paper feed ledge 50a.
[0044]
When the first paper feed ledge 50a is lowered, the second paper feed ledge 50b is lifted by the operation of the lifting device 70, and is held at the standby position indicated by the chain line in FIG. The
[0045]
In addition, the first discharge ledge 20a that supports the batch B continues to descend, and at that time, the presser bar 58 descends due to the operation of the cylinder 61, and as shown in FIG. To prevent batch B from collapsing.
[0046]
When the first discharge ledge 20a is lowered to the lower limit position and the batch B is supported by the discharge conveyor 90 as shown in FIG. 10, the lifting device 30 stops and the second discharge ledge 20b reciprocates. The first paper feed ledge 50a moves backward at the same speed as the first paper discharge ledge 20a by the operation of the reciprocating device 80.
[0047]
As the second paper discharge ledge 20b moves forward, the pusher 23 provided on the second paper discharge ledge 20b presses the batch B, and the batch B is pushed out onto the discharge conveyor 90 as shown in FIG. .
[0048]
When the batch B is pushed out by the pusher 23, the empty first paper discharge ledge 20a moves backward by the operation of the reciprocating device 40. As shown in FIG. 12, when the first discharge ledge 20a is retracted from the fall path of the box A, the reciprocating device 40 stops, and at the same time, the lifting device 30 is activated and lifted, as shown in FIG. Return to position.
[0049]
As shown in FIG. 11, when the first paper feed ledge 50a moves backward, the stack S supported on the first paper feed ledge 50a abuts against the front stopper 8 and is prevented from moving together with the first paper feed ledge 50a. As shown in FIG. 12, the stack S is supported by the second paper discharge ledge 20b by the backward movement of the first paper feed ledge 50a and the forward movement of the second paper discharge ledge 20b, and the box A is placed on the stack S. The boxes A are sequentially fed and the stacking of the boxes A is continued.
[0050]
As shown in FIG. 12, when the first paper feed ledge 50 a is retracted from the drop path of the box A, the presser bar 58 is raised by the operation of the cylinder 61, and the upper part of the batch B whose press is released is pressed by the presser 91. In this state, the sheet is conveyed downstream by the discharge conveyor 90.
[0051]
FIG. 13 shows a state immediately before the set number of final boxes A are sent to the stack S on the second paper discharge ledge 20b. When the final box A is supported by the stack S and the batch B is formed. The second paper feed ledge 50b held at the standby position is lowered by the operation of the lifting device 70 as in the case shown in FIG. Thereafter, the second paper feed ledge 50b and the second paper discharge ledge 20b perform the same operations as the first paper feed ledge 50a and the first paper discharge ledge 20a shown in FIGS. 11 to 13, and the first paper feed ledge 50a. The first paper discharge ledge 20a performs the same operation as the second paper feed ledge 50b and the second paper discharge ledge 20b shown in FIGS. 11 to 13, and batch B consisting of a set number of boxes A is placed on the discharge conveyor 90. Send it out.
[0052]
【The invention's effect】
As described above, according to the present invention, when a batch is formed on one paper discharge ledge, the one paper supply ledge is lowered to receive the next box, and the paper discharge ledge supporting the batch is moved to the lower limit position. When the sheet is lowered and stopped, the other discharge ledge is moved forward, and one sheet feed ledge is moved backward to the downstream side of the front stopper. At the same time, the stack on the paper feed ledge is received by the other paper ejection ledge, and the stacking of the boxes is continued by sequentially receiving the stacks in the stack, so that the cycle time is extremely short, and the small box from the folder gluer is reduced. A batch can be reliably formed even if it is fed out at a high speed.
[Brief description of the drawings]
1 is a front view showing an embodiment of a counter ejector used in the method according to the present invention; FIG. 2 is a perspective view showing a front stopper of the counter ejector shown in FIG. 1. FIG. 3 is a perspective view of the counter ejector shown in FIG. FIG. 4 is a perspective view showing the first paper discharge ledge shown in FIG. 3. FIG. 5 is a longitudinal side view showing a support portion of the first paper discharge ledge. 6 is a cross-sectional plan view showing the first paper feed ledge and the second paper feed ledge of the counter ejector shown in FIG. 1. FIG. 7 is a perspective view showing the first paper feed ledge. FIG. FIG. 9 is a cross-sectional view taken along the line. FIG. 9 is a schematic diagram showing a state in which the counter ejector is stacked and boxes are stacked on the first paper discharge ledge. FIG. Outline of ledge supporting the box FIG. 11 is a schematic diagram showing the operation state of the counter ejector and the stack on the first paper discharge ledge being discharged. FIG. 12 shows the operation state of the counter ejector and discharging the stack on the first paper discharge ledge. FIG. 13 is a schematic diagram showing a state where the counter ejector is in operation, and a schematic diagram showing a state in which a box is received by the second paper discharge ledge.
1 folder gluer 8 front stopper 20a first discharge ledge 20b second discharge ledge 50a first feed ledge 50b second feed ledge 90 discharge conveyor

Claims (1)

A front stopper that catches a box discharged from the folder gluer, two sets of discharge ledges that can move up and down and reciprocate to receive a box that falls along the front stopper and forms a stack, and one of the discharge ledges When the stack reaches the set number and a batch is formed, two sets of paper feed ledges that can move up and down and reciprocate to lower the box fall path and support the next box, and the lower limit of the paper discharge ledge A discharge conveyor for batch conveyance provided at a stop position, a pusher is provided at the tip of the two sets of paper discharge ledges, and one paper discharge ledge and one paper supply ledge face the drop path of the box In this state, the other paper discharge ledge and the other paper feed ledge are made to stand by at a position where the other paper feed ledge is retracted from the drop path of the box. In the state the other exhaust The ledge is advanced to the position facing the paper feed path, and one of the paper feed ledges is moved backward to the downstream side of the front stopper. A method of forming a batch that receives a stack of boxes and continues to stack boxes.

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