JPS63288840A - Automatic piling device for paper bundle - Google Patents

Abstract

PURPOSE:To prevent damage of a sheet of paper by revolvingly inserting a flat plate-like inserting blade which is positioned in a plane parallel to the faces of sheets of paper piled in bulk and separating nearly a defined number of sheets of paper. CONSTITUTION:An inserting blade 48 which is dividingly inserted into sheets of paper 22 so as to separate off a defined amount of sheets of paper 22 piled in bulk on a carry-out lifter, is installed on the lower end of the rod 47 of a blade driving cylinder 46 provided on an installing plate 44. The end of this inserting blade 48 has an arc shaped flat plate form and its plate face can be revolved by a defined angle in a plane parallel to the faces of the sheets of paper 22. By this structure, at the time of taking out the sheets of paper piled in bulk, the blade 48 is lowered by means of the cylinder 46 and rotated from a condition faced sideways, and its end is inserted into the sheets of paper 22.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a device for taking out a substantially fixed number of paper bundles from a stack of sheets.

□Prior art> When loading a stack of paper into the automatic paper feeder of a sheet-fed printing press, it is necessary to unravel the sheets in advance and stack them in bulk in an arranged state. The work of stacking paper in bulk was done exclusively by hand by workers. In other words, if the paper is wrapped in a fixed number of sheets, cut the wrapping paper open with a cutter, take out the paper stack, and twist the paper stack to create air between the sheets. The paper is loosened and then stacked on carts. On the other hand, when handling sheets that have already been printed on one side or when cardboard is supplied in advance in bulk, it is necessary to trim the paper edges and loosen the paper.

<Problems to be Solved by the Invention> These tasks are not so bad if the size of the paper is too large or not, but as the size of the paper increases, the weight also increases, making it extremely hard work. For this reason, attempts have recently been made to automate this series of operations.

In addition, when automating the alignment and unraveling of single-sided printed sheets or pre-stacked bulk sheets as described above, it is also possible to collect a set number of sheets from the bulk sheets as a bundle as appropriate for handling. Need to take it out.

The present invention was made in response to such a request, and provides paper that can be stacked in bulk in a state in which the sheets are aligned and loosened so as to be suitable for loading into the automatic paper feeder of a sheet-fed printing press. It is an object of the present invention to provide an automatic bundle stacking device, and more specifically, to provide a device for taking out a substantially constant number of paper bundles from sheets stacked in bulk therein.

Means for Solving the Problems> An automatic paper stacking device according to the present invention that achieves this object is a device that takes out a substantially constant number of sheets from a stack, aligns them, and stacks them. an insertion blade whose plate surface is located in a plane parallel to the paper plane of the sheets stacked in bulk; and the insertion blade is inserted between the sheets by rotating the insertion blade within the plane. The apparatus is characterized by comprising a blade driving means for separating a substantially constant number of sheets.

By rotating the insertion blade using the blade drive means, the insertion blade smoothly enters between the sheets without damaging the paper, and a certain number of sheets can be properly separated. This allows a certain number of sheets to be taken out.

Practical example Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall structural diagram of an automatic stacking device for paper bundles according to an embodiment of the present invention. As shown in FIG. 1, sprockets 17, 18, and 19 are rotatably attached to the upper ends of four sets of columns 12, 13, 14, and 15 that support the frame 11, respectively. Note that the sprocket of the support column 12 is not shown. One end of a chain 20 wound around the sprocket of this support 12 and the sprocket 17 is connected via a paper pallet 21 to an unloading port 23 on which unprocessed sheets 22 are piled up, and the other end is not shown in the figure. No counterweight is connected. Further, a drive sprocket 25 is attached to the lower end of the column 13 to which the sprocket 17 is attached, and is rotated forward and backward by the operation of the carry-out lifter drive motor 24. A chain 26 is wound around it, and an endless transmission chain (not shown) is also wound around the sprocket of the support column 12 and the sprocket 17.

Therefore, by the operation of the carry-out lifter drive motor 24, the carry-out lifter 23 moves up and down along the pillars 12 and 13, but the lifter 23 stops rising when the upper surface of the sheet 22 reaches a preset carry-out start position. This is done by detecting the limit switch.

Similarly, one end of the chain 27 wound around the sprockets 18 and 19 is connected to the carry-in lifter 2 where sheets 28 arranged and loosened are stacked via a paper pallet 21.
9, and a counterweight (not shown) is connected to the other end. A drive sprocket 31 is attached to the lower end of the column 14 to which the sprocket 18 is attached, and the drive sprocket 31 is rotated forward and backward by the operation of the carry-in lifter drive motor 30. This drive sprocket 31 and the sprocket 18 are connected to an endless drive chain 32. An endless transmission chain (not shown) is also wound around the sprockets 18 and 19.

Therefore, the carry-in lifter 29 moves up and down along the columns 14 and 15 due to the operation of the carry-in lifter drive motor 30, but the descent stop means that the upper surface of the sheet IJ paper 28 has reached a preset carry-in standby position (not shown). This is done by detecting a limit switch.

FIG. 2 is a front view of the upper part of the carry-out lifter 23, and FIG. 3 is a plan view thereof. As shown in Figures 2 and 3, the IR
A quadrilateral subframe 33 is attached to the frame 11 above the protrusion lifter 23.
3, a bulk paper quantitative take-out means 34 is supported so as to be movable along the conveyance direction of the sheets 28 (left-right direction in FIG. 2). FIG. 4 is a cross-sectional view taken along the line ■-■ in FIG. 2, showing the quantitative extraction means 34, FIG. 5 is a cross-sectional view taken along the line ■-■ in FIG. 4, and FIG. 6 is a cross-sectional view taken along the line ■-■ in FIG. . That is, as shown in the figure, the rail 3 is provided on the lower surface of the subframe 33.
5 is fixed along the conveyance direction, and a slider 37 is fixed to a base plate 36 on which a quantitative extraction means 34 is mounted, and is slidably attached to this rail 35.

Further, a feed-out screw shaft 38 and a carry-out screw shaft 39 are rotatably supported on the sub-frame 33 along the conveyance direction, and a nut 40 attached to the base plate 36 of the feed-out screw shaft 38 is screwed into the sub-frame 33 . (See Figure 3). Therefore, by rotating the handle 41 attached to the shaft end of the feed screw 38, the base plate 3
6 is the transport direction (moves along this direction).

On the other hand, on the lower surface of the center of the base plate 36, there are
As shown in the figure, a bracket 42 is attached to hang down, and a guide bar 43 is supported by the bracket 42 so as to be slidable in the conveyance direction (left and right direction in FIG. 5).
A mounting plate 44 is fixed to the tip of the guide bar 43. Further, a longitudinal driving cylinder 45 is fixed to the bracket 42, and the 70 rod end is connected to the mounting plate 44ζ, and the mounting plate 44 reciprocates along the conveyance direction by the operation of the front cylinder 45. It looks like this. A blade driving cylinder 46 is supported on the mounting plate 44, and a rod 47 of the blade driving cylinder 46 has a rod 47 at the lower end for separating a certain amount of sheets 22 stacked in bulk on the carry-out lifter 23. An insertion blade 48 is attached which can accommodate 22 minutes. The blade drive cylinder 46 is capable of reciprocating the rod 47 in the vertical axial direction, and is also capable of rotating a predetermined amount around the axis.

On the other hand, this insertion blade 48 has a flat plate shape with an arcuate tip, as shown in FIG. The base end portion of the leaf 22 is fixed to the rod 47 so as to be located in a plane parallel to the paper surface of the leaf 22.

On the other hand, as shown in FIGS. 4 and 6, two guide shafts 49 are attached to the lower surface of the base plate 36 in parallel with each other along a direction perpendicular to the conveying direction. The shaft 49 has the bracket 4
A movable table 50 is slidably supported on both sides of the holder 2 via a slider 51. A screw shaft 52 is rotatably supported by the base plate 36 between and parallel to both guide shafts 49.
A nut 53 fixed to the movable table 50 is screwed together.

Further, the screw shaft 52 is connected to a drive motor 54 attached to the upper surface of the base plate 36 via a timing belt 55, and when the drive motor 53 operates, the screw shaft 52
is driven to rotate, thereby moving the movable table 50. Here, the threaded shafts 52 are oppositely threaded with their center portions as boundaries, and as the threaded shafts 52 are rotated by the drive motor 53, the movable tables 50 on both sides approach or separate from each other. In addition, the screw shaft 52 is divided at the center,
Each screw shaft may be driven by an individual motor.

A presser cylinder 5 is attached to the moving table 50 via a support piece 56.
7 is supported, and a pressing piece 59 is attached to the lower end of the rod 58 of this holding cylinder 57 for holding down the rolled paper 22 stacked in bulk. Presser cylinder 57
The rod 58 is the same as the blade driving cylinder 46 described above, and is capable of reciprocating in the vertical axial direction and rotating around the axis. Furthermore, a cylinder 60 for driving the clipper back and forth is fixed to the moving table 50.
A gripper 6 is installed at the end of the rod, which is movable along the conveying direction.
1 is installed. This gripper 61 has a fixed claw 6
2, a movable claw 63 that approaches and moves away from the fixed claw 62 in the vertical direction, and an opening/closing cylinder 64' driven by the movable claw 63. Note that the moving tables 50 on both sides are symmetrical with respect to the center line.

Next, the operation of such bulk paper quantitative take-out means 34 will be described. In order to operate this fixed amount take-out means 34, first, the handle 41 is operated.
advance to a position where it can engage. Then, the insertion blade 48 is lowered by the blade driving cylinder 46, and as shown in FIG. 7, the insertion blade 48 is turned from the sideward position to the forward direction in the conveyance direction. A part of the tip of the push-in blade 48 is inserted into one sheet 2
A slight amount t (for example, about 5 m) is placed approximately at the center in the width direction at a predetermined distance (for example, about 25+nw+) from the top surface of 2.
Just put it in. FIG. 8 is a perspective view showing the state in which the insertion blade 48 is rotated and inserted into the sheet 22 in this manner. Here, since the insertion blade 48 can be inserted between the sheets 22 while rotating in a horizontal plane, the insertion blade 48 can be inserted between the sheets 22.
2, and a substantially constant number of sheets 22 can be separated onto the upper part of the insertion blade 48 without tearing or damaging the paper. .

Next, the insertion blade 48 is moved by the longitudinal drive cylinder 45.
by advancing the tip further by an appropriate amount (for example, 40
After inserting the sheets 22), the blade driving cylinder 46 is actuated to raise the insertion blade 48 and lift the sheet 22 above the insertion blade 48. Next, with both movable tables 50 brought to the center, the pressing piece 59 is rotated by the presser cylinder 57, and its tip is inserted into the gap between the sheets 22 formed by the rising of the insertion blade 48. Then, the drive motor 54 is operated to move the two moving tables 50 away from each other and move them to both ends of the sheet 22 in the width direction. After pressing, presser cylinder 57
The pressing piece 59 is lowered by pressing the lower sheet 22.

Next, the gripper 61 is advanced toward the sheet 22 by the cylinder 60 for driving the gripper back and forth, and the fixed claw 62 is inserted into the gap between the formed sheets g2, and the movable claw 63
is positioned above the sheet 22, and then the opening/closing cylinder 6
4 to lower the movable claw 63 and grip a fixed number of separated sheets 22, the gripper 61 is advanced by the gripper front-rear driving cylinder 60 to push the gripped sheets 22 forward in the transport direction. . In this way, a certain number of sheets are removed from the bulk sheet 22.

On the other hand, as shown in FIG. 1, a loading screw shaft 65 extending parallel to the conveyance direction (left-right direction in FIG. 1) is rotatably attached to the frame 11 above the loading lid 29. A carry-in screw drive motor 66 fixed to the frame 11 is connected to the carry-in screw shaft 65, and the carry-in screw shaft 6 is driven by the operation of the carry-in screw drive motor 66.
5 is adapted to drive rotation. This loading screw 65 has a pair of upper and lower gripping claws 69 that grip the front end of the bundle of paper taken out by the above-mentioned quantity taking out means 34 by the operation of a pair of hydraulic cylinders 67 and 68. A nut 72 of a paper stack gripping device W171 equipped with a holder W171 is screwed together, and the grasped paper stack is conveyed onto the sheet 28 of the carry-out lifter 29 at the carry-in standby position. Further, as shown in FIG. 1 and FIG. 9 showing a state in which the paper bundle gripping device 71 is gripping a paper bundle, a roller conveyor 73 is provided between the carry-out lifter 23 and the carry-in lifter 29. , air injection nozzles 7 are installed on both sides of the roller conveyor 73.
4 is arranged and colored. Compressed air is conveyed from the air injection nozzle 74 on the roller conveyor 73 and is injected toward the filter paper bundle.
As the paper is being conveyed, wind passes between the paper sheets and loosens them.

Further, as shown in FIG. 1 and FIG. 10 showing a plan view of the upper part of the carry-in lifter 29, a sub-frame 75 is attached to the support column 14 so as to surround the four sheets 28 on the carry-in lifter 29.
, 15. This sub-frame 75 is closed with a paper bundle front edge aligning device 76 and a paper east left/right edge aligning device 77 at the front in the conveying direction and on both sides in the width direction of the sheets 28, respectively. That is, a support plate 79 is supported by a sub-frame 75 through a guide bar 78 so that it can move horizontally toward and away from the sheet 28, and is moved by a drive motor 80 according to the paper size. 5 so that it can be moved to a desired position, and a vibrator 81 is attached to this support plate 79, and a contact plate 82 is attached to the drive shaft of the vibrator 81 to abut against the end surface of the sheet 28 and align it. Fixed. Therefore, the sheets of paper 28 carried onto the carry-in lipper 29 are aligned so that their end faces are aligned in one plane by the vibration of these contact plates 82. , the sheet 2 on the carry-in lifter 29 is placed on the right end by the aquacheter 831ζ.
A paper stack displacement prevention device 85 having a presser claw 84 that presses the upper surface of the paper stack 84 to prevent the stacked sheets 28 from shifting when the paper stack is carried in by the paper stack gripping device 71 is installed at the front end of the paper stack. It is provided facing the aligning device 76.

Therefore, in such a configuration, as described above, the bundle of a certain number of sheets 22 pushed out by the quantitative takeout means 34 is held at its leading end by the paper bundle gripping device w71, and is also placed on the carry-in lifter 29 side. As mentioned above, the paper bundle is loosened by blowing compressed air from the air injection nozzle 74 while passing through the four-ra conveyor 73 in the process, and then the paper bundle is transferred to the carry-in lifter, on top of the 290 sheets 28. can be piled up. Also, the stacked paper stack line is provided with its end face by the paper stack alignment device 76, 77 and is straightened together with the sheets 28 already stacked. Therefore, the lifting lifter 23 and the width lid 2 are lifted.
By repeating the lowering of step 9 and sequentially transferring the paper stack from the unloading lifters 2 and 3 to the loading lifter 29, the unloading lifter 2
The sheets 22 on the top 3 are stacked in bulk on the carry-in lifter 29 in an aligned and unraveled state.

In addition, although the apparatus has been described for aligning and transferring sheets 22 stacked on the carry-out lifter 23 to the carry-in lifter 29, in this embodiment, the paper to be fed onto the carry-out lifter 23 is further wrapped in wrapping paper in advance. It can also be used when the device is wrapped. That is, a device is provided for peeling off the wrapping paper of the sheets 22 that are wrapped in a fixed number of sheets supplied onto the carry-out lifter 23 and conveying only the internal paper bundle onto the carry-in lifter 29. Next, I will explain about this device.
Ru.

As shown in FIGS. 1 to 3, the unloading screw shaft 39, which is pivotally supported by the subframe 33 above the unloading lifter 23, includes a subframe 33, and an unloading screw drive motor 88 mounted on the unloading screw shaft 39. are connected, and the unloading screw shaft 39 is driven and rotated by the operation of the drive motor 86,
There is. This unloading screw shaft 39 is screwed into a nut 88 with a pushing value [87] that abuts the rear end of the uppermost sheet bundle on the unloading lifter 23 and advances it. By reversing the shaft 39, the extrusion device 87 moves back and forth in the left and right directions in the figure.
is provided with a wrapping paper gripping means 90 that grips only the wrapping paper on the rear end side of the paper bundle, and this wrapping paper gripping means 90 is used when the above-mentioned fixed quantity extraction means 34 is operated, that is, when the wrapping paper gripping means 90 is placed on the carry-out lifter 23. When handling sheets 22 that are not stacked in bulk, they can be evacuated upwards as shown by the central figure in FIG. 2 so as not to interfere with the fixed quantity extraction means 34. Incidentally, when operating this extrusion device 87, the quantitative extraction means 34
can be moved backwards to avoid interference, as shown in Figure 1.

On the other hand, as shown in FIG. 1, between the carry-out lifter 23 and the roller conveyor 73, a wrapping paper peeling device 91
is installed. This wrapping paper peeling device! Reference numeral 91 denotes a front circle cutter 9z that cuts the front edge of the wrapping paper that wraps the bundle of paper, a side circle cutter 93 that cuts the side edge of the wrapping paper, and upper and lower suction pads 9 that peel off the torn wrapping paper.
4.95.

In this device, while the topmost paper bundle on the carry-out lifter 23 is transported forward by the extrusion device 87, the side end surface of the wrapping paper is opened by the driving rotation of the side circle cutter 93, and At the roadside, the front end surface of the wrapping paper is opened by driving rotation of the front circle cutter 92. Thereafter, the upper and lower wrapping paper is sucked by the upper and lower suction pads 94 and 95, and by opening them up and down, the front part of the paper bundle is exposed from the wrapping paper. After that, while holding the rear end of the wrapping paper with the wrapping paper gripping means 90,
The exposed front part of the paper bundle is gripped by the paper bundle gripping device [71, the paper bundle is pulled out from the wrapping paper, and the paper bundle is conveyed onto the carry-in lifter 29 in the same manner as described above.

As described above, according to the present device, the sheets are automatically placed on the carry-in lifter 29, regardless of whether the sheets are stacked in bulk in advance or wrapped in wrapping paper at regular intervals. They can be stacked in bulk in a uniformly aligned and unraveled state.

<Effects of the Invention> As described above in detail with reference to one embodiment, according to the present invention, in an apparatus that takes out a fixed number of sheets from a stack, arranges them, and reloads them, the sheets are rotated while being rotated. Since a predetermined number of sheets are separated and taken out by an insertion blade that enters the paper, the insertion blade can be pushed in smoothly without resistance when separating, and it is possible to prevent tearing or damaging the sheets. It becomes possible.

[Brief explanation of drawings]

Fig. 1 is an overall structural diagram of a Kagaro Paper East automatic stacking device according to an embodiment of the present invention, Fig. 2 is a front view of the upper part of the carry-out lifter, Fig. 3 is a plan view thereof, and Fig. 4 is a quantitative take-out device. II/-It/ cross-sectional view in Fig. 2 showing the means, and Fig. 5 is the -It/ sectional view in Fig. 4
■ Cross-sectional view, Figure 6 is a Vl-Vl cross-sectional view in Figure 4, Figure 7 is a ■-■ cross-sectional view in Figure 5, and No. 5lIA is a perspective view of the insertion blade inserted into the sheet. FIG. 9 is a front view of the paper stack gripping device gripping the paper stack, and FIG. 10 is a plan view of the upper part of the carry-in lifter. In the drawings, 22 and 28 are sheets of paper, 23 is a carry-out lifter, 29 is a storage lid, 34 is a metering device, 46 is a blade drive cylinder, 4B is a push-in blade, 71 is a paper stack gripping device, and 73 is a 74 is an air injection nozzle, 76 is a paper stack front end alignment device, 77 is a paper east and left edge alignment device, 87 is an extrusion device, and 91 is a wrapping paper peeling device.

Claims (1)

[Claims] In a device that takes out a substantially constant number of sheets of paper stacked in bulk, aligns them, and stacks them, an insertion blade that has a flat plate shape and whose plate surface is located in a plane parallel to the plane of the paper sheets stacked in bulk; , a plate drive means for inserting the insertion blade between the sheets and separating a substantially constant number of sheets by rotating the insertion blade within the plane. .