JP3599254B2 - Stacking device for sheet - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sheet stacking device for stacking sheets sequentially fed from a transport system.
[0002]
[Prior art]
2. Description of the Related Art A sheet stacking apparatus for sequentially feeding and stacking sheets one by one in a substantially horizontal direction via a transfer system into a stacking unit is widely used. Various proposals have been made for a sheet stacking device of this type in order to buffer a sequentially input sheet and to stack the sheets at a stacking section at a high speed. For example, Japanese Patent Application Laid-Open No. 5-278924 discloses a method. There are known sheet collecting devices.
[0003]
In the sheet stacking apparatus, the supplied sheet is temporarily buffered by the sheet buffer, and then moved by the moving unit to the sheet stacking unit adjacent in a direction substantially perpendicular to the sheet supply direction of the sheet buffer in the horizontal direction. It is configured to: The moving means is constituted by a sheet receiving surface of the sheet buffer, and the sheet receiving surface is inclined so that the downstream side in the sheet supply direction becomes lower and becomes lower as approaching the sheet stacking portion. .
[0004]
[Problems to be solved by the invention]
Incidentally, the sheet bodies stacked as described above often have various different dimensions. However, the above-mentioned sheet accumulating apparatus is configured to accumulate sheets of a certain size, and when accumulating sheets of various sizes, dedicated sheets corresponding to the dimensions of each sheet are used. Sheet stacking device must be prepared. As a result, it has been pointed out that it is inferior in versatility and is not economical.
[0005]
The present invention solves this kind of problem, and can easily cope with sheets having various dimensions, is excellent in versatility, and has a sheet body capable of accumulating the sheet bodies with high accuracy. An object is to provide an integrated device.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a method of stacking relatively large sheets, in which the first and second stacking tables are maintained on the same plane and integrally tilted in a predetermined direction. On the other hand, when stacking relatively small sheets, the first and second stacking tables are tilted in different directions. For this reason, it is possible to easily and efficiently cope with sheet members having different dimensions by a single accumulating device.
[0007]
When tilting the first and second stacking tables in directions different from each other, the position adjustment of the first and second support means and the position adjustment of the first and second guide means according to the dimensions of the sheet member. Is performed. As a result, the work of stacking sheets having various sizes is performed with high accuracy.
[0008]
Furthermore, by having the first and second stopper means capable of moving back and forth in the direction intersecting with the loading direction of the sheet member and in the up-and-down direction, the buffering operation of the sheet members having various sizes can be effectively performed.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a schematic perspective view of a sheet stacking apparatus 10 according to the present embodiment, and FIG. 2 is a front explanatory view of the stacking apparatus 10.
[0010]
The stacking device 10 is disposed below the stacking unit 16 that is inclined with respect to the horizontal direction to stack the sheets 14 sequentially fed from the transfer conveyor (transport system) 12, and is disposed below the stacking unit 16 in the tilt direction. A support mechanism 18 for aligning one side 14a of the sheet body 14 and stacking the sheet bodies 14; and a support mechanism 18 disposed on the upper side in the inclination direction of the stacking section 16 and the other side section 14b side of the sheet body 14 A guide mechanism 20 is provided for guiding, and the support mechanism 18 and the guide mechanism 20 are held by a frame 21 (see FIG. 2).
[0011]
The stacking section 16 has a support shaft 26 on the end portions 22a and 24a side that are in contact with each other, and the first and second stackers 22 and 24 that can tilt with respect to each other via the support shaft 26, A drive mechanism 28 that can tilt the first and second stackers 22 and 24 in different directions while maintaining the second stackers 22 and 24 on the same plane and tilting them integrally in a predetermined direction. Prepare.
[0012]
As shown in FIG. 2, the drive mechanism 28 includes a base 30, and a hydraulic cylinder 32 for elevating is mounted on the base 30 in an upward direction. A lifting table 36 is held by a rod 34 extending upward from the lifting hydraulic cylinder 32, and a plurality of guide rods 38 fixed to the lifting table 36 are slidably supported by the base 30. A first tilt hydraulic cylinder 40 is fixed to the base 30 in proximity to the lifting hydraulic cylinder 32. A rod 42 extending upward from the first tilt hydraulic cylinder 40 is connected to the support shaft 26 via a support member 44.
[0013]
On both sides of the base 30, second and third hydraulic cylinders for tilting 46, 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 the rollers 54, 56 are provided on the lower portions 22b of the first and second stacking tables 22, 24. , 24b.
[0014]
Synchronizing means 58 is attached to the second and third tilt hydraulic cylinders 46 and 48 in order to drive them in different directions in synchronization with each other. The synchronizing means 58 has racks 64, 66 which are fixed to the rods 50, 52 via attachment members 60, 62 and extend vertically, and the pinions 68, 70 mesh with the racks 64, 66. The pinions 68 and 70 are engaged with both ends of the rotating shaft 72 via bevel gears (not shown).
[0015]
First rails 78a and 78b and second rails 80a and 80b are provided on the upper portion of the frame body 21 so as to extend in the horizontal direction. First motors 82a and 82b are fixed to the frame 21 corresponding to the first rails 78a and 78b, and the first motors 82a and 82b are relatively long first ball screws 84a in a direction approaching each other. , 84b extend. Second motors 86a, 86b are provided corresponding to the second rails 80a, 80b, and relatively short second ball screws 88a, 88b extend from the respective second motors 86a, 86b in a direction approaching each other.
[0016]
The support mechanism 18 is located on the first and second stacking tables 22 and 24 and is held by the first rails 78a and 78b so as to be able to advance and retreat in the arrow Y direction intersecting the sheet body 14 loading direction (arrow X direction). First and second support means 90 and 92 are provided. The first support means 90 has a main body 94 screwed to the first ball screw 84a, and a swing part 96 is swingably connected to a lower part of the main body 94. A cylinder 98 is swingably mounted on the main body 94, and a rod 98 a extending from the cylinder 98 engages with the swinging portion 96, and a plate-like side stopper 100 is provided on the swinging portion 96.
[0017]
In the second support means 92, the same components as those in the first support means 90 are denoted by the same reference numerals, and detailed description thereof will be omitted. The second support means 92 also serves as the first guide means 102 constituting the guide mechanism 20, and the swinging portion 96 has a receiving table 106 which can move forward and backward in the horizontal direction via a cylinder 104, and a vertical direction. And an elevating table 110 which can be moved up and down via a rail member 108 extending to the end. The receiving board 106 is provided with a first plate body 112 that is bent and a roller 114 that is engaged with the inclined lower end of the lift table 110, while the second plate body 116 that extends in the vertical direction is provided on the lift table 110. Provided.
[0018]
The guide mechanism 20 is disposed so as to be able to move up and down corresponding to the first guide means 102 and the end portions 22a and 24a of the first and second stacking tables 22 and 24 which are in contact with each other. And second guide means 118 that can be guided along the respective tilting directions of the second stacking tables 22 and 24. The second guide means 118 has a cylinder 120 fixed to the frame 21, and a guide member 124 is provided on a rod 122 extending downward from the cylinder 120. The guide member 124 includes a vertical portion 125 and first and second guide surfaces 126 and 128 having a top portion on the side of the vertical portion 125 and inclined toward the first and second stacking tables 22 and 24, respectively. It is formed.
[0019]
The frame body 21 is provided with a buffer stopper mechanism 130 that abuts on 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 member 14 and in a vertical direction. 134 is provided. The first and second stopper means 132, 134 are supported by the second rails 80a, 80b, and have nut members 136a, 136b with which the second ball screws 88a, 88b are screwed. The first and second stopper means 132, 134 include stopper plates 140a, 140b which can be moved up and down via cylinders 138a, 138b. The stopper plates 140a, 140b engage with buffer springs 142a, 142b and are not shown. It is swingable via a drive source.
[0020]
As shown in FIG. 1, a plurality of air nozzles 144 are provided to inject air in a direction indicated by an arrow X to a sheet body 14 input from the conveyor 12. Each air nozzle 144 is connected to a blower (not shown).
[0021]
The operation of the integrated device 10 thus configured will be described.
[0022]
Preparation work of the stacking device 10 is performed in advance corresponding to the sheet member 14 having a relatively large size. That is, as shown in FIG. 2, in a state where the rod 42 of the first tilt hydraulic cylinder 40 constituting the drive mechanism 28 is retracted downward, the second tilt hydraulic cylinder 46 is driven to move the rod 50 downward. While moving, the third tilt hydraulic cylinder 48 is driven to move the rod 52 upward. Therefore, the first stacking table 22 tilts the lower portion 22b side downward with the support shaft 26 as a fulcrum, and the second stacking table 24 tilts the lower portion 24b side with the support shaft 26 as a fulcrum. .
[0023]
At this time, racks 64 and 66 constituting the synchronization means 58 are provided on the rods 50 and 52, and the racks 64 and 66 move downward and upward to rotate the pinions 68 and 70, respectively. A rotating shaft 72 connected to the pinions 68 and 70 via bevel gears (not shown) rotates in one direction. Accordingly, the forward and backward displacements of the rods 50 and 52 are performed synchronously, and the first stacking table 22 and the second stacking table 24 are maintained on the same plane with their respective ends 22a and 24a contacting each other. And can be tilted together.
[0024]
As described above, when the lower portion 22b side of the first stacking table 22 is set to the predetermined tilting state as the stacking position side of the sheet member 14, the first support means 90 disposed on the first stacking table 22 becomes Under the driving action of the first motor 82a, the position is adjusted in the arrow Y direction according to the size of the seat body 14 via the first 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 swing part 96, and the side stopper 100 is positioned corresponding to the tilt angle of the first stacking table 22. .
[0025]
On the other hand, the second support means 92 functions as the first guide means 102. That is, the first guide means 102 adjusts the position in the arrow Y direction via the first ball screw 84b and the first rail 78b under the driving action of the first motor 82b, and drives the cylinder 104 to 106 is displaced toward the end 24 a of the second stacking table 24. When the receiving table 106 moves toward the end 24a, the roller 114 comes into contact with the inclined lower portion of the lifting table 110 to raise the lifting table 110 along the rail member 108. When the pedestal 106 reaches the distal end position, the first plate 112 provided on the pedestal 106 and the second plate 116 provided on the elevating pedestal 110 form a vertical and inclined horizontal surface. Side support provided.
[0026]
Since the second guide means 118 is not used, it is retracted upward via the cylinder 120, and the first and second stopper means 132, 134 constituting the stopper mechanism 130 are provided with the second motors 86a, 86b and The position is adjusted in the direction of the arrow Y via the second rails 80a and 80b, and the respective stopper plates 140a and 140b are arranged at predetermined height positions via the cylinders 138a and 138b.
[0027]
Therefore, as shown in FIG. 1, the sheet members 14 are sequentially fed into the stacking unit 16 via the conveyor 12 and air is jetted from the air nozzles 144 toward the sheet members 14 in the arrow X direction. Is done.
[0028]
The other side portion 14b of the sheet body 14 fed from the conveyor 12 comes into contact with the inclined surface of the first plate body 112 and the vertical surface of the second plate body 116 which constitute the first guide means 102, and these shapes are formed. Is guided to the side stopper 100 side. Further, the leading end 14c of the sheet member 14 contacts the stopper plates 140a and 140b constituting the first and second stopper means 132 and 134 to determine the position of the leading end, and the cushioning springs 142a and 142b determine the position of the leading end. The shock generated when the abutment 14 is in contact is reduced.
[0029]
As a result, the sheet member 14 moves to the side stopper 100 constituting the first support means 90 along the inclination of the entire stacking portion 16, and one side portion 14 a of the sheet member 14 is aligned by the side stopper 100. Therefore, the sheets 14 are sequentially stacked at desired positions of the stacking unit 16.
[0030]
Next, as shown in FIG. 3, when sheets 14 having a relatively small size are stacked, a preparation operation of the stacking device 10 is performed corresponding to the sheets 14 having a small size. That is, as shown in FIG. 4, the first tilt hydraulic cylinder 40 constituting the drive mechanism 28 is driven to move the rod 42 upward, and the second and third tilt hydraulic cylinders 46, 48 are driven. Then, the rods 50 and 52 are displaced upward and downward, respectively.
[0031]
When the rod 50 is displaced 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 at a substantially horizontal position, and the rod 42 is further moved upward. By the displacement, the support shaft 26 moves up. Accordingly, the first and second stacking tables 22 and 24 are arranged in a state where the lower portions 22b and 24b are tilted downward with the ends 22a and 24a as tops.
[0032]
In the support mechanism 18, the position of the first support means 90 is adjusted corresponding to the sheets 14 stacked on the first stacking table 22, and the second support means 92 is adjusted on the sheet stack stacked on the second stacking table 24. 14, the position is adjusted. At this time, the second support means 92 does not function as the first guide means 102, and the first plate body 112 and the second plate body 116 are moved by the inward movement of the pedestal 106 via the cylinder 104. They are arranged on the same vertical plane and have the same configuration as the side stopper 100. The first plate 112 and the second plate 116 are tilted under the action of the cylinder 98 in accordance with the tilt of the second stacking table 24.
[0033]
In the guide mechanism 20, the cylinder 120 constituting the second guide means 118 is driven, and the guide member 124 is displaced downward integrally with the rod 122. Thereby, the first and second guide surfaces 126 and 128 are arranged corresponding to the first and second stacking tables 22 and 24. In the stopper mechanism 130, the first and second stopper means 132 and 134 are adjusted to desired positions on the first and second stacking tables 22 and 24.
[0034]
After the above-described preparation work is performed, when the relatively small-sized sheet members 14 are introduced into the stacking unit 16 side by side via the conveyor 12 (see FIG. 3), the other side of each sheet member 14. The portion 14b is guided by the first and second guide surfaces 126 and 128 constituting the second guide means 118 and the vertical portion 125, and the respective tip ends 14c constitute the first and second stopper means 132 and 134. It contacts the plates 140a and 140b. For this reason, each sheet member 14 moves in a direction in which the sheet members 14 are separated from each other along the inclination of the first and second stacking tables 22 and 24, and one side 14 a of each sheet member 14 is moved by the first and second support means 90 and 92. Aligned. As a result, the plurality of sheet bodies 14 are accurately stacked on the first and second stacking tables 22 and 24.
[0035]
As described above, in the present embodiment, when stacking the sheet bodies 14 having a relatively large size, the first and second stacking tables 22 and 24 are maintained on the same plane and integrally tilted in a predetermined direction. At the same time, the first support means 90 is positioned corresponding to one side portion 14a of the sheet member 14, and the first guide means 102 is disposed corresponding to the other side portion 14b of the sheet member 14 (see FIG. 2). ).
[0036]
On the other hand, when stacking the sheet members 14 having a relatively small size, the first and second stacking tables 22 and 24 are tilted in different directions about the support shaft 26 as a fulcrum, and the first and second stacking tables 22 and 24 are tilted. First and second support means 90 and 92 are arranged corresponding to the lower side in the inclination direction of 22, 24, and a guide member 124 constituting the second guide means 118 is arranged corresponding to above the support shaft 26. (See FIG. 4).
[0037]
Thus, it is possible to easily cope with the sheet members 14 having various sizes simply by using the single accumulating device 10, and an effect of being excellent in versatility is obtained. In addition, it is possible to efficiently and accurately accumulate the sheet members 14 having various dimensions, thereby improving the accumulating accuracy.
[0038]
【The invention's effect】
As described above, in the sheet stacking apparatus according to the present invention, the stacking unit is provided with the first and second stacking tables that can be tilted relative to each other, and the first and second stacking tables are integrally integrated in a predetermined direction. In the tilted state, the work of stacking relatively large sheets is performed. In the state where the first and second stacking tables are tilted in different directions, the work of stacking relatively small sheets is performed. Is performed. This makes it possible to easily cope with sheets having different dimensions with a single accumulating device, and is excellent in versatility, and it is possible to accumulate the sheets with high accuracy and efficiency.
[0039]
Further, by adjusting the positions of the first and second support means and the first and second guide means according to the dimensions of the sheet member, the accumulating accuracy of the sheet member is further improved.
[0040]
Further, by providing the first and second stopper means abutting on the leading end of the sheet member in the loading direction so as to be position-adjustable, the buffering operation of the sheet member having various dimensions can be effectively performed.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a sheet stacking device according to the present invention.
FIG. 2 is an explanatory front view of the integrated device.
FIG. 3 is a schematic perspective view showing a state where an accumulation unit of the accumulation device is divided.
FIG. 4 is an explanatory front view of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Stacking device 12 ... Conveyor 14 ... Sheet body 16 ... Stacking part 18 ... Support mechanism 20 ... Guide mechanism 22, 24 ... Stacking table 28 ... Drive mechanism 32, 40, 46, 48 ... Hydraulic cylinder 58 ... Synchronization means 90, 92 ... supporting means 102, 118 ... guide means 130 ... stopper mechanism 132, 134 ... stopper means

Claims (4)

An accumulating unit that is inclined with respect to the horizontal direction to accumulate sheets sequentially input from the transport system,
A support mechanism that is arranged on the lower side in the inclination direction of the stacking unit and aligns one side of the sheet body to stack the sheet bodies,
A guide mechanism that is arranged on the upper side in the inclination direction of the stacking unit and guides the other side of the sheet body,
With
A first and a second stacking table that can be tilted with their end portions in contact with each other as a fulcrum;
A drive mechanism capable of tilting the first and second stackers in directions different from each other while maintaining the first and second stackers on the same plane and tilting them integrally in a predetermined direction;
A sheet stacking device comprising: 2. The stacking device according to claim 1, wherein the support mechanism includes first and second support means disposed on the first and second stacking tables so as to be able to advance and retreat in a direction intersecting with a direction in which the sheet member is inserted. A sheet stacking device, comprising: 2. The stacking device according to claim 1, wherein the guide mechanism is arranged corresponding to an upper side in a tilt direction when the first and second stackers are tilted integrally, and intersects the sheet body feeding direction. 3. First guide means capable of moving back and forth in the direction;
A second guide that is arranged to be able to move up and down corresponding to the end portions of the first and second stacking tables that are in contact with each other and that can guide the sheet body along the respective tilting directions of the first and second stacking tables. Means,
A sheet stacking device comprising: 2. The stacking device according to claim 1, further comprising: a buffering stopper mechanism abutting on a leading end of the sheet body in a feeding direction,
The stopper mechanism is provided corresponding to the first and second stacking tables, and has first and second stopper means capable of moving back and forth in a direction intersecting with the loading direction of the sheet member and in a vertical direction. Sheet stacking device.

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