JPH0986772A - Sheet material stacking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily cope with various sizes of sheet materials by providing two stackers having the capability of tilting along directions relative to each other, so that relatively large-sized sheet materials are stacked, when the stackers are tilted in an integrated state, and relatively small-sized sheet materials are stacked when the stackers are tilted in directions different from each other. SOLUTION: When large-sized sheet materials 14 are stacked, a tilting hydraulic cylinder 46 is operated for contraction, while another tilting hydraulic cylinder 48 is operated for expansion. The outer end part of the first stacker 22 is thereby caused to tilt downward about the a support shaft 26 as a fulcrum and at the same time, the outer end part of the second stacker 24 is tilted upward about the shaft 26 as a fulcrum. Both stackers 22 and 24 as a whole are thereby tilted in an integrated state for enabling the large-sized sheet materials 14 to be stacked. Also, when small- sized sheet materials 14 are stacked, a tilting hydraulic cylinder 32 is operated for expansion, and tiling hydraulic cylinders 46 and 48 are operated for contraction. The outer end of each of the stackers 22 and 24 is thereby tilted downward, and the inner end part thereof is tilted upward for enabling the sheet materials 14 to be stacked separately on the stackers 22 and 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stacking device for stacking sheets sequentially fed from a transport system.

[0002]

2. Description of the Related Art A sheet body stacking apparatus has been widely used in which sheet bodies, which are transported one by one in a substantially horizontal direction via a transport system, are sequentially loaded into a stacking unit and stacked. In this type of sheet body stacking apparatus, various proposals have been made for buffering sequentially loaded sheet bodies and stacking them in a stacking unit at a high speed, for example, as disclosed in Japanese Patent Laid-Open No. 5-278924. There is known a sheet stacking device.

In this sheet stacking apparatus, the supplied sheets are temporarily buffered by the sheet buffering section, and then moved to a sheet stacking section adjacent to the sheet buffering section in a direction substantially perpendicular to the sheet supply direction of the sheet buffering section. It is configured to be moved by. The moving means is composed of the sheet receiving surface of the sheet cushioning section, and the sheet receiving surface is inclined so that the downstream side in the sheet feeding direction becomes lower and the closer to the sheet stacking section, the lower. .

[0004]

By the way, the sheet bodies stacked as described above often have various different sizes. However, the above-described sheet stacking apparatus is configured to stack sheet bodies having a certain size, and when stacking sheet bodies having different sizes,
A dedicated sheet stacking device corresponding to the size of each sheet body must be prepared. Due to this, it has been pointed out that it is not versatile and not economical.

The present invention solves this kind of problem, and can easily cope with sheet bodies having various sizes.
It is an object of the present invention to provide a sheet body stacking device that is excellent in versatility and that can stack the sheet bodies with high accuracy.

[0006]

In order to solve the above-mentioned problems, the present invention provides that the first and second stacking stands are maintained on the same plane when stacking relatively large-sized sheet bodies. While being integrally tilted in a predetermined direction, the first and second stacking stands are tilted in different directions when stacking relatively small-sized sheet bodies. For this reason, it is possible to easily and efficiently deal with sheet bodies having different sizes with a single stacking device.

When the first and second stacking stands are tilted in different directions from each other, the position adjustment of the first and second support means and the adjustment of the first and second guide means according to the size of the sheet body. Position adjustment is performed. As a result, the work of accumulating sheet bodies having various sizes can be performed with high accuracy.

Furthermore, by having the first and second stopper means which can advance and retreat in the direction intersecting with the inserting direction of the sheet body and in the vertical direction, the cushioning work of the sheet bodies of various different sizes can be effectively performed.

[0009]

1 is a schematic perspective view of a sheet stacking apparatus 10 according to this embodiment, and FIG. 2 is a front view of the stacking apparatus 10.

The stacking device 10 is a conveyor (conveying system).
A stacking unit 16 that is inclined with respect to the horizontal direction for stacking the sheet bodies 14 sequentially loaded from 12, and this stacking unit 1
6, a support mechanism 18 arranged on the lower side in the inclination direction and for accumulating the sheet body 14 by aligning one side portion 14a of the sheet body 14, and arranged on the upper side in the inclination direction of the accumulation section 16, A guide mechanism 20 for guiding the other side portion 14b of the sheet body 14 is provided, and the support mechanism 18 and the guide mechanism 20 are held by a frame body 21 (see FIG. 2).

The stacking portion 16 has end portions 22a which are in contact with each other.
A support shaft 26 is provided on the side of 24a, and the first and second stacking tables 22 and 24 can be tilted with respect to each other via the support shaft 26.
While maintaining the first and second stacking stands 22 and 24 on the same plane and tilting them integrally in a predetermined direction, the first and second stacking stands 22 and 24 can be tilted in mutually different directions. Drive mechanism 28.

As shown in FIG. 2, the drive mechanism 28 is provided with a base 30, on which a lifting hydraulic cylinder 32 is mounted in an upward direction. Lifting hydraulic cylinder 32
An elevating table 36 is held by a rod 34 extending upward from the above, and a plurality of guide rods 38 fixed to the elevating table 36 are slidably supported by the base 30. A first tilting hydraulic cylinder 40 is fixed to the base 30 in the vicinity of the lifting hydraulic cylinder 32. This first
A rod 42 extending upward from the tilting hydraulic cylinder 40
Is connected to the support shaft 26 via the support member 44.

On both sides of the base 30, second and third tilting hydraulic cylinders 46 and 48 are mounted upward. Rollers 54, 56 are provided on rods 50, 52 extending upward from the second and third tilting hydraulic cylinders 46, 48, and these rollers 54, 56 are lower portions 22b of the first and second stacking tables 22, 24. , 24b.

Second and third tilting hydraulic cylinders 46,
The synchronization means 58 is attached to the drive unit 48 so as to drive them in synchronization with each other in different directions. This synchronization means 58
Has racks 64, 66 which are fixed to the rods 50, 52 via mounting members 60, 62 and extend in the vertical direction, and the pinions 68, 70 mesh with the racks 64, 66.
The pinions 68 and 70 are engaged with both ends of the rotary shaft 72 via a bevel gear (not shown).

The first rails 78a, 78b and the second rails 80a, 80b extend horizontally in the upper portion of the frame body 21.
Is provided. The frame 21 has first rails 78 a, 78.
The first motors 82a and 82b are fixed to correspond to b, and the relatively long first ball screws 84a and 84b extend from the respective first motors 82a and 82b in a direction in which they are close to each other. Second motors 86a and 86b are provided corresponding to the second rails 80a and 80b, respectively.
Second ball screws 88a and 88b, which are relatively short, extend from 6a and 86b in directions close to each other.

The support mechanism 18 includes the first and second stacking tables 2
First and second supporting means 90 which are located on the second and the second rails 24 and are supported by the first rails 78a and 78b and are arranged so as to be able to advance and retreat in the arrow Y direction that intersects the loading direction (arrow X direction) of the sheet body 14. , 92. The first supporting means 90 has a main body portion 94 that is screwed into the first ball screw 84a, and a swinging portion 96 is swingably connected to the lower portion of the main body portion 94. A cylinder 98 is swingably mounted on the main body 94, a rod 98a extending from the cylinder 98 engages with the swing portion 96, and a plate-shaped side stopper 100 is provided on the swing portion 96.

In the second supporting means 92, the same components as those of the first supporting means 90 are designated by the same reference numerals, and detailed description thereof will be omitted. The second support means 92 is
It also serves as the first guide means 102 that constitutes the guide mechanism 20, and the swinging portion 96 is provided with a pedestal 106 that can move back and forth in the horizontal direction via a cylinder 104 and a rail member 108 that extends in the vertical direction. An elevating table 110 that can be raised and lowered is disposed therethrough. The first plate 11 that bends to the pedestal 106
2 and the roller 11 that engages with the inclined lower end of the lift 110.
4 is provided, and the lifting plate 110 is provided with a second plate body 116 extending in the vertical direction.

The guide mechanism 20 includes the first guide means 1
02 and the first and second stacking stands 22, 24 are arranged so as to be movable up and down corresponding to the ends 22a, 24a of the first and second stacking stands 22, 24 which are in contact with each other.
And second guide means 118 capable of guiding along the respective tilting directions. The second guide means 118 is the frame body 2.
1 has a cylinder 120 fixed to the cylinder 1.
The guide member 124 is attached to the rod 122 extending downward from 20.
Is provided. The guide member 124 includes a vertical portion 12
5 and the first and second guide surfaces 126, 128 having the tops on the vertical portion 125 side and inclined toward the first and second stacking tables 22, 24 respectively.

The frame body 21 is provided with a buffer stopper mechanism 130 which comes into contact with the leading end 14c of the sheet body 14 in the loading direction. The stopper mechanism 130 is arranged corresponding to the first and second stacking tables 22 and 24, and is capable of moving forward and backward in a direction intersecting the loading direction of the sheet body 14 and in the vertical direction, It comprises 134. The first and second stopper means 132, 134 are supported by the second rails 80a, 80b, and the second ball screw 8
Nut members 136a and 136b with which 8a and 88b are screwed
Having. First and second stopper means 132, 134
Includes stopper plates 140a and 140b that can be moved up and down via cylinders 138a and 138b.
40a and 140b are engaged with the buffer springs 142a and 142b, and are swingable via a drive source (not shown).

As shown in FIG. 1, a plurality of air nozzles 144 are provided for ejecting air in the direction of arrow X with respect to the sheet body 14 loaded from the conveyor 12. Each air nozzle 144 is connected to a blower (not shown).

The operation of the integrated device 10 thus constructed will be described.

Preparation work for the stacking device 10 is performed in advance for the sheet body 14 having a relatively large size. That is, as shown in FIG. 2, with the rod 42 of the first tilting hydraulic cylinder 40 forming the drive mechanism 28 retracted downward, the second tilting hydraulic cylinder 46 is driven and the rod 50 moves downward. While moving, the third tilting hydraulic cylinder 48 is driven and the rod 52 moves upward. For this reason, the first stacking table 22 has the support shaft 26 as a fulcrum and the lower part 22
While tilting the b side downward, the second stacking table 24 is
The lower portion 24b side is tilted upward with the support shaft 26 as a fulcrum.

At this time, the rods 50 and 52 are provided with racks 64 and 66 which constitute the synchronizing means 58, and the racks 64 and 66 move respectively downward and upward to rotate the pinions 68 and 70. To make this pinion 6
A rotary shaft 72, which is connected to the gears 8 and 70 via a bevel gear (not shown), rotates in one direction. This allows the rod 5
The forward and backward displacements of 0 and 52 are performed synchronously, and the first stacking table 2
2 and the second stacking table 24 have respective end portions 22a and 24a.
Can be tilted integrally while being kept in the same plane in the state of abutting.

As described above, the lower portion 22 of the first stacking table 22
When the side b is set in a predetermined tilted state as the stacking position side of the sheet body 14, the first supporting means 90 arranged on the first stacking table 22 is driven by the first motor 82a to move the first supporting means 90 to the first position. The position is adjusted in the arrow Y direction according to the size of the seat body 14 via the ball screw 84a and the first rail 78a. In the first support means 90, the cylinder 98 is driven to swing the side stopper 100 integrally with the swinging portion 96, and the side stopper 100 moves the side stopper 100.
Is positioned corresponding to the tilting angle of the.

On the other hand, the second support means 92 functions as the first guide means 102. That is, the first guide means 1
The position of 02 is adjusted in the direction of the arrow Y through the first ball screw 84b and the first rail 78b under the driving action of the first motor 82b, and the cylinder 104 is driven so that the receiving table 106 is the second stacking table. It is displaced toward the end 24 a of 24. When the cradle 106 moves to the end 24a side,
The rollers 114 come into contact with the inclined lower portion of the lift table 110 to raise the lift table 110 along the rail member 108. Then, when the receiving table 106 reaches the tip position, the first plate 112 provided on the receiving table 106 and the lift 1
The second plate member 116 provided in 10 constitutes a side support having a vertical plane and an inclined horizontal plane.

Since the second guide means 118 is not used, it is retracted upward through the cylinder 120, and the first and second stopper means 132 and 134 constituting the stopper mechanism 130 are the second motor 86a. , 86b
The positions of the stopper plates 140a and 140b are adjusted in the arrow Y direction via the second rails 80a and 80b, and the stopper plates 140a and 140b are arranged at predetermined height positions via the cylinders 138a and 138b.

Therefore, as shown in FIG.
Are sequentially introduced to the stacking unit 16 side via the transport conveyor 12, and the sheet body 1 is discharged from each air nozzle 144.
Air is jetted in the direction of arrow X with respect to No. 4.

The other side portion 14b of the sheet body 14 loaded from the conveyer 12 abuts on the inclined surface of the first plate body 112 and the vertical plane of the second plate body 116 which constitute the first guide means 102, Side stopper 1 along these shapes
You will be guided to the 00 side. In addition, the tip 14c of the sheet body 14
Is brought into contact with the stopper plates 140a, 140b constituting the first and second stopper means 132, 134 to position the tip end position thereof, and the buffer springs 142a, 1b.
The impact generated when the sheet body 14 abuts is reduced by 42b.

As a result, the sheet body 14 becomes the stacking portion 16
It moves to the side stopper 100 side that constitutes the first supporting means 90 along the entire inclination, and the one side portion 14a of the sheet body 14 is aligned by the side stopper 100. Therefore, the sheet bodies 14 are sequentially stacked at desired positions of the stacking unit 16.

Next, as shown in FIG. 3, when the relatively small-sized sheet bodies 14 are stacked, the preparatory work of the stacking apparatus 10 is performed corresponding to the small-sized sheet bodies 14. That is, as shown in FIG. 4, the first tilting hydraulic cylinder 40 that constitutes the drive mechanism 28 is driven to move the rod 42 upward, and the second and third tilting hydraulic cylinders 46 and 48 are driven. The rod 50,
52 is displaced upward and downward respectively.

By displacing the rod 50 upward while the rod 52 is displaced downward, the positions of the lower portions 22b and 24b of the first and second stacking tables 22 and 24 are arranged in a substantially horizontal position. Is displaced upward, so that the support shaft 26 rises. As a result, the first and second stacking stands 22 and 24 are arranged with the lower ends 22b and 24b tilted downward with the ends 22a and 24a being the tops.

In the supporting mechanism 18, the position of the first supporting means 90 is adjusted corresponding to the sheet bodies 14 stacked on the first stacking table 22 side, and the second supporting means 92 is stacked on the second stacking table 24. The position of the sheet body 14 is adjusted in accordance with the sheet body 14. At that time, the second support means 92 does not function as the first guide means 102, and the pedestal 106 moves inward through the cylinder 104, whereby the first plate body 112 and the second plate body 11 are moved.
6 and 6 are arranged on the same vertical plane, and the side stopper 100
It will have the same configuration as. The first plate 11
The second and second plate members 116 are tilted under the action of the cylinder 98 in accordance with the tilt of the second stacking table 24.

In the guide mechanism 20, the second guide means 11
8 drives the cylinder 120, and the rod 122
The guide member 124 is displaced downward as a unit. As a result, the first and second guide surfaces 126, 128 are arranged corresponding to the first and second stacking stands 22, 24.
In addition, in the stopper mechanism 130, the first and second stopper means 132 and 134 are the first and second stacking stands 22 and 2, respectively.
4 to the desired position.

After the above preparatory work is performed, when the relatively small-sized sheet bodies 14 are introduced in parallel to the stacking section 16 side via the conveyor 12, each sheet body 14 is introduced. The other side portion 14b constitutes the second guide means 118, and the first and second guide surfaces 126 and 128 and the vertical portion 1
While being guided by 25, each tip 14c abuts on the stopper plates 140a, 140b constituting the first and second stopper means 132, 134. Therefore, the respective sheet bodies 14 move in the directions in which they are separated from each other along the inclinations of the first and second stacking stands 22 and 24, and the respective one side portions 14a are moved by the first and second supporting means 90 and 92. Aligned. As a result, the first and second stacking stands 2
A plurality of sheet bodies 14 are accurately stacked on the sheets 2 and 24.

As described above, in this embodiment, when the sheet bodies 14 having a relatively large size are stacked, the first and second sheets are stacked.
The stacking bases 22 and 24 are maintained on the same plane and are integrally tilted in a predetermined direction, and the first supporting means 90 is positioned in correspondence with the one side portion 14a of the sheet body 14. The 1st guide means 102 is arrange | positioned corresponding to the other side part 14b of 14 (refer FIG. 2).

On the other hand, when the sheet bodies 14 having a relatively small size are stacked, the first and second stacking stands 22 and 24 are tilted in different directions with the support shaft 26 as a fulcrum, and the first and second stacking tables 22 and 24 are tilted. The first and second support means 90, 92 are arranged corresponding to the lower sides of the two stacking stands 22, 24 in the inclination direction, and the guide member 1 constituting the second guide means 118.
24 is arranged above the support shaft 26 (see FIG. 4).
reference).

As a result, it is possible to easily deal with the sheet bodies 14 having various sizes by using only the single integrated device 10, and it is possible to obtain the effect of excellent versatility. Moreover, it becomes possible to efficiently and highly accurately stack the sheet bodies 14 having different sizes, and the stacking precision can be improved.

[0038]

As described above, in the sheet body stacking apparatus according to the present invention, the stacking portion is provided with the first and second stacking stands which are tiltable with respect to each other, and the first and second stacking stands are integrated. In the state of being tilted in a predetermined direction, the stacking work of relatively large-sized sheet bodies is performed, while the first and second stacking stands are tilted in different directions,
Accumulation work of sheet bodies having a relatively small size is performed.
This makes it possible to easily deal with sheet bodies of various sizes with a single stacking device, has excellent versatility, and enables the sheet bodies to be stacked with high accuracy and efficiency.

Further, by adjusting the positions of the first and second supporting means and the first and second guide means according to the size of the sheet body, the accumulating accuracy of the sheet body is further improved.

Furthermore, by providing the first and second stopper means that come into contact with the leading end of the sheet body in the insertion direction so that the position of the sheet body can be adjusted, the cushioning work of the sheet body having various different sizes can be effectively performed.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a sheet body stacking apparatus according to the present invention.

FIG. 2 is a front explanatory view of the integrated device.

FIG. 3 is a schematic perspective view of a state in which a stacking unit of the stacking device is divided.

4 is a front explanatory view of FIG. 3. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Accumulation device 12 ... Conveyor 14 ... Sheet body 16 ... Accumulation part 18 ... Support mechanism 20 ... Guide mechanism 22, 24 ... Accumulation stand 28 ... Drive mechanism 32, 40, 46, 48 ... Hydraulic cylinder 58 ... Synchronizing means 90, 92 ... Supporting means 102, 118 ... Guide means 130 ... Stopper mechanism 132, 134 ... Stopper means

Claims (4)

[Claims] 1. A stacking portion that is inclined with respect to the horizontal direction for stacking sheet bodies that are sequentially loaded from a transport system, and one side portion side of the sheet body that is disposed below the stacking portion in the tilt direction. And a guide mechanism arranged on the upper side in the inclination direction of the stacking unit for guiding the other side of the sheet body, the stacking unit including: Is a first and a second stacking table which can be tilted with the end portions contacting each other as a fulcrum, and the first and the second stacking table are maintained on the same plane and tilted integrally in a predetermined direction, A sheet stacking apparatus, comprising: a drive mechanism capable of tilting the first and second stacking tables in different directions. 2. The stacking device according to claim 1, wherein the support mechanism is provided on the first and second stacking stands so as to be movable back and forth in a direction intersecting a direction in which the sheet bodies are loaded.
And a second supporting means, which is a sheet body stacking apparatus. 3. The stacking device according to claim 1, wherein the guide mechanism is arranged so as to correspond to an upper side in a tilt direction when the first and second stacking tables tilt integrally, and A first guide means that can move forward and backward in a direction that intersects the loading direction, and a first body and a second body that are arranged so as to be capable of moving up and down corresponding to the end sides of the first and second stacking bases that are in contact with each other. 2. A stacking device for a sheet body, comprising: a second guide means capable of guiding along each tilting direction of the stacking table. 4. The stacking device according to claim 1, further comprising a buffer stopper mechanism that abuts against a leading end of the sheet body in the loading direction, wherein the stopper mechanism is arranged corresponding to the first and second stacking tables. A sheet stacking device having first and second stopper means capable of advancing and retracting in a direction intersecting a direction in which the sheet is loaded and a vertical direction.