JP2000233824A - Conveyance device for stack sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveyance device changing the direction of stacked sheets and inverting the stacked sheets up and down during conveyance. SOLUTION: A turntable device 10, a sheet carrying conveyer 2 and a sheet- inverting device 30 are arranged sequentially on the downstream part of a discharging conveyer 1 conveying stacked sheets arranged in multiple rows in the lengthwise and crosswise directions. When the stacked sheets are discharged in a state of being arranged in multiple rows in the crosswise direction from the discharging conveyer 1, the turn table device 10 converts the direction of the stacked sheets arranged in multiple rows into a single lengthwise row. After this conversion, the sheet-carrying conveyer 20 conveys the stacked sheets discharged from the turn table device 10 to the sheet-inverting device 30. The sheet-inverting device 30 inverts the stacked sheets up and down to discharge them downstream.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacked sheet conveying apparatus for conveying stacked sheets discharged from a sheet stacker upside down during transfer to a processing device such as a palletizer.

[0002]

2. Description of the Related Art A double-faced corrugated cardboard or a double-sided corrugated cardboard manufactured by a corrugator is cut into a predetermined length to form a corrugated cardboard sheet. In the case of forming a box using this corrugated cardboard sheet, usually, an appropriate printing is performed on one side by a printing device, then punched into a predetermined shape by a punching device, and the punched sheets are stacked by a sheet stacker into several units as one unit. The stacked sheets are piled up in a predetermined arrangement on a pallet by a palletizer using a manipulator or the like. The piled sheets are distributed to the user together with the pallet, and the user supplies the piled sheets to the paper feed unit of the box making device to assemble the piled sheets.

[0003] In a sheet stacker in which several punched sheets are stacked as one unit, there are a case where the punched sheets are stacked in a single row state and a case where a plurality of punched sheets are stacked in a horizontal row.

When the punched sheets are stacked in a double row, it is necessary to change the transport direction of the double-row piled sheets from a horizontal row to a vertical row and supply the palletizer.

[0005] Here, in the case of corrugated cardboard sheets stacked with the printing surface (front surface) facing upward by the sheet stacker, they are piled up with the printing surface facing upward by the palletizer.

In the case where such piled sheets are supplied to a box making apparatus to automatically assemble the boxes, when the cardboard sheets are supplied to the paper feeding section of the box making apparatus with the printing surface facing upward, the cardboard sheets have the printing surface inside. Since it is folded as an orientation, the disadvantage that the printing surface does not appear on the surface occurs, so when stacking stacked sheets with a palletizer, the stacked sheets are turned upside down and supplied to the palletizer, and the printing surface is turned down Stacked sheets need to be piled up.

[0007]

In the meantime, when the direction of the stacked sheets discharged from the sheet stacker is changed and inverted up and down, it is conventionally performed manually, which is very troublesome, and furthermore, the stacking of the sheets is long. The heavy weight of the seat required at least two workers and was extremely hard work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stacked sheet conveying apparatus capable of automatically changing the orientation of a stacked sheet and inverting the stacked sheet to save labor. It is.

[0009]

In order to solve the above-mentioned problems, according to the present invention, a discharge conveyor for conveying a stack of sheets to a downstream side, and a stack of sheets fed from the discharge conveyor are received, and the orientation of the stack is set to 90. ° Turntable device to change the direction and transport to the downstream side, and a sheet transport conveyor to receive the stacked sheets sent from the turntable device and transport it to the downstream side,
This configuration employs a stopper that stops the stacked sheets at the discharge end of the sheet conveying conveyor, and a sheet reversing device that reverses the stacked sheets sent from the conveying conveyor upside down and conveys the sheets downstream.

[0010] In the transport device having the above configuration,
When the stacked sheets supplied from the discharge conveyor to the turntable device are in a plurality of lines arranged in a horizontal line, the direction of the stacked sheets arranged in the horizontal line is changed by 90 ° by the turntable device, and the stacked sheets are arranged in a vertical line. After being in the state, the sheet is sent to the downstream sheet conveying conveyor. When one stacked sheet is fed from the sheet conveying conveyor to the sheet reversing device, the stopper is advanced to stop the subsequent stacked sheet on the sheet conveying conveyor, and the stacked sheets supplied to the sheet reversing device are turned upside down. To discharge downstream.

As described above, the direction of the stacked sheets is changed by 90 ° by the turntable device, and the stacked sheets are turned upside down by the sheet reversing device, thereby eliminating the need for an operator and saving labor. .

Here, a stacking device for stacking stacked sheets in a plurality of stages is provided downstream of the sheet reversing device,
By reducing the number of times the stacked sheets are discharged from this apparatus, for example, even if the feeding speed of the stacked sheets sent from the sheet reversing device to the palletizer is faster than the stacking processing speed of the stacked sheets in the palletizer, these stacked sheets can be used. It can be piled up reliably.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2,
The stacked sheets S ₀ stacked by the sheet stacker are stacked with several sheets S ₁ as one unit and the printing surface (front surface) facing upward.

The stacked sheets S ₀ are conveyed downstream by a discharge conveyor 1 composed of a belt conveyor in a state of being arranged in a plurality of rows in a front-back (vertical) direction or a left-right (horizontal) direction.

[0015] downstream side of the discharge conveyor 1, the transfer conveyor 2, optionally stacking sheet S ₀ 90 °
A turntable device 10 for changing the direction is provided in order.

FIGS. 3 to 5 show a turntable device 10.
The details are shown below. Sheet transfer conveyor 11 the turntable 10, for transporting a stack sheet S ₀ on the downstream side
When lifting frame 1 for lifting a stack sheet S ₀ to be transferred to the downstream side by the sheet transfer conveyor 11 upwardly
2, an elevating device 13 for moving the elevating frame 12 up and down,
It comprises a rotating device 14 for rotating the lifting frame 12 by 90 ° in the raised position and a detent device 15 for stopping the rotation in the rotating position.

The sheet transfer conveyor 11, a transfer direction of the stacked sheet S _0, comprising a plurality of roller conveyors 11a disposed respectively in the direction perpendicular to the transport direction, the roller 11b of each roller conveyors 11a at an end portion It is rotationally driven in one direction by a connected motor (not shown).

The lifting frame 12 includes two rectangular frames 12 of a rectangular shape.
a, 12b are combined in a cross shape, and each of the rectangular frames 12a, 12b of the lifting frame 12 is stacked on a stacked sheet S _0.
Between the roller conveyors 11a arranged in the transfer direction and between the roller conveyors 11a arranged in the direction orthogonal to the transfer direction. A spline shaft 12c is provided on the center axis of the lifting frame 12, and the nut member 1 spline-coupled to the spline shaft 12c.
2d is rotatably supported by the bearing housing 12e.

An elevating device 13 for moving the elevating frame 12 up and down is composed of a cylinder 13a connected to the lower end of a spline shaft 12c. The operation of the cylinder 13a causes the elevating frame 12 to move up and down, and the conveying surface of the roller conveyor 11a. The position at which the camera is immersed from is set as the descending position.

A rotating device 14 for rotating the lifting frame 12 includes:
A belt 14 is provided between a pulley 14b attached to the rotating shaft of the motor 14a and a pulley 14c attached to the nut member 12d.
and the nut member 12d and the spline shaft 12c are rotated by 90 ° by driving the motor 14a.

The detent device 15 for the lifting frame 12 is formed with four locking holes 15a at 90 ° intervals on one circumference centered on the central axis of the pulley 14c attached to the nut member 12d. A locking pin 15b is provided to face one of the four locking holes 15a, and the locking pin 15b is raised and lowered by the operation of the cylinder 15c to engage with the locking hole 15a.

[0022] Now, when the sheet S ₀ stacked on the sheet transfer conveyor 11 of the turntable device 10 is fed from the discharge conveyor 1, the stack sheet S ₀ is transferred to the downstream side by the sheet transfer conveyor 11.

When the stacked sheets S ₀ are sent in a state of being lined up vertically, the stacked sheets S ₀ are transferred to the discharge end of the sheet transfer conveyor 11 without being changed in direction by the sheet transfer conveyor 11. .

On the other hand, as shown in FIG. 4, when the stacked sheets S ₀ are fed in the form of multiple rows arranged at intervals in the left-right direction, the multiple-row stacked sheets S ₀ are left as they are. It is transported downstream. When the double-row stacked sheets S ₀ are transferred onto the lifting frame 12, the lifting frame 12 is raised by the operation of the cylinder 13 a to lift the double-row stacked sheets S ₀ from the conveying surface of the sheet transfer conveyor 11.

When the elevating frame 12 is raised to the upper limit position, the elevating frame 12 is rotated 90 ° by the operation of the motor 14a of the rotating device 14. Due to the 90 ° rotation of the lifting frame 12, the double-row stacked sheets S ₀ are, as shown in FIG.
The direction is changed by 90 °, so that they are aligned vertically.

After changing the direction of the stacked sheets S _0, the lifting frame 12 is lowered by the operation of the cylinder 13 a, and when the stacked frames are lowered to near the lower limit position, the stacked sheets S ₀ on the lifting frame 12 are received by the sheet transport conveyor 11. The sheet is conveyed downstream by the sheet transfer conveyor 11.

On the other hand, when the lifting frame 12 is lowered to the lower limit position, the cylinder 15c of the rotation preventing device 15 shown in FIG. 5 operates to raise the locking pin 15b, and the locking pin 15b
The lifting frame 12 is prevented from rotating by the engagement of the locking holes 15a.

In the embodiment, the turntable device 10
As the elevator frame 12 and vertically movably supported to a plurality of stationary been roller conveyors 11a, and the direction of stacking the sheet S ₀ by the rotation of the rising and 90 ° of the elevator frame 12 so as to convert 90 ° direction However, the turntable device 10 is not limited to this.

For example, as described in Japanese Utility Model Laid-Open No. Hei 5-1731, a first roller and a second roller are turned 90 degrees on a rotatably supported turntable in two perpendicular directions. provided alternately, one of the first roller and the second roller, after transferring the sheet S ₀ stack to the center of the turntable by rotation of the rollers arranged in the sheet transport direction, the roller is stopped, the turntable 90 °
The direction of the stacked sheet S ₀ is changed by 90 ° by the rotation of the turn table, and after the direction change, the rollers arranged in the sheet transfer direction are rotated to transfer the stacked sheet S ₀ after the direction change to the downstream side. It may be a device.

As shown in FIGS. 1 and 2, downstream of the turntable device 10, the turntable device 1 is provided.
Stacking sheet S ₀ fed from the sheet transfer conveyor 11 at a required interval of 0 conveyor 20 for conveying to the downstream side.

[0031] The sheet conveying conveyor 20 comprises a roller conveyor. A stopper 21 is provided at the discharge end of the sheet conveying conveyor 20. The stopper 21 is moved up and down by the operation of the cylinder 22. This stopper 21
One stacked sheet S ₀ from the sheet transport conveyor 20
Rises when the sheet is sent out, and the subsequent stacked sheet S ₀
Is stopped on the sheet conveying conveyor 20.

A sheet reversing device 30 is provided downstream of the sheet transport conveyor 20 for reversing the stacked sheets S ₀ sent out from the sheet transport conveyor 20 during transport.

FIGS. 6 to 8 show details of the sheet reversing device 30. FIG. The sheet reversing device 30 includes three sheet transfer conveyors 31 arranged in parallel, and a stacked sheet S transferred downstream by the sheet transfer conveyors 31.
_And a sheet reversing frame 32 provided on a _zero transfer path.

The sheet transfer conveyor 31 consists of a belt conveyor, roller conveyor C ₁ on both sides of the sheet transfer conveyor 31 located on either side are provided. Of the three sheet conveyors 31, the sheet conveyor 31 located at the center is divided into a front sheet conveyor 31a and a rear sheet conveyor 31b.

The sheet reversing frame 32 is arranged at the center between the sheet transport conveyors 31 on both sides. Are formed at intervals of four accommodating portion 32a to accommodate a stacked sheet S ₀ is circumferentially 90 ° to the sheet reversing frame 32. A pair of side walls 32b forming each accommodation portion 32a
Consists of two arms 32c provided at intervals in the left-right direction, and an interval larger than the width of the front sheet transfer conveyor 31a and the rear sheet transfer conveyor 31b is provided between the two arms 32c. Has been opened.

The sheet reversing frame 32 is a stack sheet S ₀
7 is fixed to a rotatable rotary shaft 33 provided so as to traverse the transfer path, and the rotary shaft 33 is intermittently rotated by 90 ° in a direction indicated by an arrow in FIG. 7 by a motor 34 connected to one end. When the sheet reversing frame 32 is stopped,
One of the four accommodating portions 32a is in a horizontal state facing the sheet conveying conveyor 20.

Now, when the stacked sheets S ₀ are supplied from the sheet conveying conveyor 20 onto the sheet conveying conveyor 31 of the sheet reversing device 30, the stacked sheets S ₀ are conveyed downstream by the sheet conveying conveyor 31.
The sheet is fed into the storage section 32 a of the sheet reversing frame 32. On the other hand, the subsequent stacked sheet S ₀ is stopped and held on the sheet conveying conveyor 20 by the stopper 21.

The sheets S ₀ stacked in the storage section 32a are stored.
When the stacked sheets S ₀ are stopped by contact with the bottom of the storage portion 32 a, the rotation of the rotating shaft 33 driven by the motor 34 causes the sheet reversing frame 32 to rotate.
There is 90 ° rotated, as shown in FIG. 7, stacked sheets S ₀ is the standing state both side edges are located above and below.

Here, as shown in FIG. 8, below the side edge located below the stacked sheet S ₀ in the upright state,
A sheet receiving plate 36 which is moved up and down by a cylinder 35 is provided, the stacked sheets S ₀ are lifted by raising the sheet receiving plate 36, and then the sheet receiving plate 36 is rapidly lowered, so that the stacked sheets S ₀ are stored in the storage section. 32
for impinging shocking the bottom of a, it is possible to align the side edges of the stacked sheets S _0.

Further, the stacked sheets S in the standing state
₀ pusher 38 which is moved back and forth by actuation of the cylinder 37 on both side edges perpendicular to the side edges provided for, by advancing the pusher 38, it is possible to press the both side edges of the stacked sheets S _0, both side edges perpendicular to the side edges of the stacked sheets S ₀ can also be made uniform.

After the sheet reversing frame 32 is rotated by 90 ° and stopped, the stopper 21 is lowered and the second stacked sheet S ₀ is fed onto the sheet transfer conveyor 31.
The stopper 21 stops the subsequent stacking sheets S ₀ to rise.

The second stacked sheet S ₀ sent onto the sheet transfer conveyor 31 is transferred by the sheet transfer conveyor 31 in the same manner as the first stacked sheet S ₀ and stored in the storage portion 32 a of the sheet reversing frame 32. Then
The sheet reversing frame 32 is further rotated by 90 ° in the same direction.
The first stacked sheets S ₀ vertically inverted by the rotation, just before the rotation stop, the first stacked sheets S ₀ which vertically inverted is received by a sheet transfer conveyor 31, on the downstream side by the sheet transfer conveyor 31 Conveyed.

On the other hand, the second stacked sheet S ₀ is set in the upright state, and thereafter, the same operation as described above is repeatedly performed, and the stacked sheet S ₀ is sequentially turned to the downstream side of the sheet transport conveyor 31 in a state of being turned upside down. Conveyed.

The sheet reversing device is not limited to the above. For example, provided in the transport direction of the sheet S ₀ stacked upright possible two arms, the upstream arm is defeated Fushimi,
In a standing state in which the downstream arm falls slightly backward from the vertical state, the sheet S is stacked on the arm in the lying down state.
_Is supplied, and the stacked sheet S ₀ is erected and leaned against the downstream arm by the swing of the upstream arm in the rising direction. Thereafter, the downstream arm is rotated in the transfer direction of the stacked sheet S _0. it may be such that so as to reverse the stacking sheet S ₀ Te.

[0045] As shown in FIGS. 1 and 2, on the downstream side of the sheet reversing device 30, Danseki device 50 stacks sheets S ₀ fed from the sheet transfer conveyor 31 of the sheet reversing device 30 is disposed downstream A first sheet supply conveyor 39 and a second sheet supply conveyor 40 are provided for feeding the sheet.

As shown in FIGS. 9 and 10, the first sheet supply conveyor 39 comprises a roller conveyor. on the other hand,
The second sheet supply conveyor 40 is composed of three belt conveyors 40a arranged in parallel,
A pusher 41 is provided between the discharge ends of Oa.
The pusher 41 is connected to a rotating shaft 42 provided at the lower front side of the discharge end of the belt conveyor 40a. A lever 43 is connected to the rotating shaft 42, and a cylinder 44 is connected to the lever 43.

The stacking device 50 is provided with a double-row stacking conveyor 53 composed of a belt conveyor and a delivery conveyor 54 composed of a roller conveyor in front and back on an elevating frame 52 which is moved up and down by the operation of a cylinder 51. , The both sides of the stacking conveyor 53 and the stacking conveyor 53
A roller conveyor 55 is provided between them.

[0048] Also, the stopper 56 provided on the downstream side of the intermediate portion of the conveyor 53 above between stacking conveyor 53, the stopper 56 so as to advance and retreat from the transport path of the stack sheet S ₀ by the action of the cylinder 57 ing.

Here, the lifting frame 52 is moved up and down by a stroke of a distance corresponding to the height of the stacked sheets S ₀ by the operation of the cylinder 51. The transport surface is maintained at the same height as the transport surface of the second sheet supply conveyor 40.

Now, the sheet is transferred from the sheet transfer conveyor 31 of the sheet reversing device 30 to the second sheet supply conveyor 39 via the first sheet supply conveyor 39.
When the sheet S ₀ stacked on the sheet supply conveyor 40 is fed, the stack sheet S ₀ is conveyed to the downstream side by the second sheet supply conveyor 40.

[0051] Here, if it is stacked sheets S ₀ of stacked sheets S ₀ does not require stacking, Danseki 50
Is held at the raised position, and each of the stacking conveyor 53 and the delivery conveyor 54 is driven.

For this reason, the stacked sheets S ₀ sent from the second sheet supply conveyor 40 are sent onto the stacking conveyor 53, sent from the stacking conveyor 53 to the sending conveyor 54, and discharged downstream. You.

On the other hand, in the case of the stacked sheets S ₀ requiring stacking, the first stacked sheet S ₀ is the stacking device 50.
The lifting frame 52 is held in the raised position, and the stacking conveyor 53 and the sending conveyor 54
Are stopped. The stopper 56 faces the transport path of the stack sheet S ₀ is held in the lowered state.

In the above state, when the stacked sheets S ₀ conveyed downstream by the second sheet supply conveyor 40 are discharged from the discharge end of the second sheet supply conveyor 40, the second sheet supply conveyor 40. The pusher 41 that is immersed below the transfer surface of the first member swings upward. By the swing of the pusher 41, the stacked sheets S
_{In the case of 0,} the trailing edge is pressed and pushed onto the stacking conveyor 53 in a stopped state, and the leading end is positioned by contact with the stopper 56.

When the stacked sheets S ₀ are positioned,
With pusher 41 is returned to the standby position retracted below the conveyance surface of the second sheet supply conveyor 40, the lifting frame 52 is lowered a distance corresponding to the height of the stacked sheets S ₀ as stroke. For this reason, the upper surface of the stacked sheets S ₀ on the stacking conveyor 53 is kept at the same height as the transport surface of the second sheet supply conveyor 40.

When the lifting frame 52 is stopped and held at the lowered position, the next stacked sheet S ₀ is fed from the second sheet supply conveyor 40 onto the stopped stack sheet S ₀ , and the second sheet supply conveyor 40 Once discharged from the discharge end, the pusher 41 is erected upward pressing the second rear edge of the stack sheet S _0. Due to the pressing, the second stacked sheet S ₀ comes into contact with the stopper 56 and the leading edge is positioned, and the leading edge of each of the stacked sheets S ₀ is stacked in two stages in an aligned state.

After the stacking of the stacked sheets S ₀ , the stopper 56 rises and separates from the transfer path of the stacked sheets S ₀ , the stacking conveyor 53 and the feeding conveyor 54 are driven, and the lifting frame 52 is raised. Is done.

For this reason, the stacked sheets S ₂
Is sent to the conveyor 54 feed from the conveyor 53 in the number of half infeed number of stacked sheets S ₀ sent to the stacking conveyor 53, the processor of the palletizer or the like (not shown) on the downstream side by the feed conveyor 54 Is discharged.

[0059]

As described above, in the present invention, the turntable device, the sheet conveying conveyor, and the sheet reversing device are sequentially provided on the discharge side of the discharge conveyor for transferring the stacked sheets to the downstream side. During the transfer, the direction of the stacked sheets can be automatically changed and turned upside down, which can greatly reduce labor.

Further, by providing a stacking device downstream of the sheet reversing device, the stacked sheets can be stacked, so that the frequency of supplying the stacked sheets to a processing device such as a palletizer is reduced, and Can be processed even if the ability is low.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a transfer device according to the present invention.

FIG. 2 is a longitudinal sectional front view of the transfer device according to the present invention.

FIG. 3 is a plan view of a turntable device of the transfer device according to the present invention.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is an elevation device of the elevation frame of the transport device according to the present invention;
Longitudinal front view showing the rotating device and the positioning device

FIG. 6 is a plan view of a sheet reversing device of the conveying device according to the present invention.

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6;

8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a plan view showing a sheet supply conveyor and a stacking device of the transport device according to the present invention.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Discharge conveyor 10 Turntable device 20 Sheet transport conveyor 21 Stopper 30 Sheet reversing device 50 Stacking device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takuya Ishibashi 2-5-25 Umeda, Kita-ku, Osaka-shi Rengo Co., Ltd. Inside the head office (72) Inventor Tatsuya Nakagaki 2-5-25 Umeda, Kita-ku, Osaka Rengo F term in the head office (reference) 3F081 AA10 AA29 BD15 BD20 BE02 BE04 BE08 BE09 CA04 CA08 CA47 CC12 CC20 CE10 CE13 CE14

Claims (2)

[Claims] 1. A discharge conveyor for conveying stacked sheets to a downstream side, a turntable device for receiving the stacked sheets fed from the discharge conveyor, changing the direction of the stacked sheets by 90 ° and conveying the sheets to a downstream side, and a turntable for the turntable A sheet conveying conveyor for receiving the stacked sheets sent from the apparatus and conveying the sheets to the downstream side, a stopper for stopping the stacked sheets at the discharge end of the sheet conveying conveyor, and turning the stacked sheets sent from the conveying conveyor upside down to the downstream side And a sheet reversing device for conveying the stacked sheets. 2. The apparatus according to claim 1, wherein a stacking device for stacking the stacked sheets in a plurality of stages is provided downstream of the sheet reversing device.