JPH01321223A - Feed paper stacker for sheet-fed press - Google Patents

Abstract

PURPOSE:To make improvements in operability for paper replenishment by inserting a fork set up between a paper stacking table and a spare paper stacker into the underside of paper on a paper stacking plate, and when this fork is pulled out, making a paper end so as to be pressed down. CONSTITUTION:A tip end of a fork 51 of a fork support block is supported, free of slide motion, by a holder 53 clamped to a square stay 52 connecting symmetrical guide rails. Likewise, a symmetrical pair of air cylinders 61 and clamped to this square stay 52, and a section triangular paper presser 63 extending in both directions is clamped to a working end of the piston rod 62 via a fixed fitting 63. In this constitution, when the fork 51 once inserted into the underside of paper 11B is pulled out, the air cylinders 61 are advanced forward and this paper presser 63 is made contact with a rear end edge of the paper 11B. If so, a detecting switch 63a operates, whereby the piston rod 62 is locked by a locking device 61a, thus any paper slippage is prevented from occurring.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a paper feeding device for a sheet-fed printing press in which when the paper stacked on a paper stack board runs out due to paper feeding, The present invention relates to a paper feed stacking device that supplies paper without stopping the machine.

[Conventional technology]

In printing operations using a sheet-fed printing press, the paper stacked on the paper stack on the paper stacking table of the paper feeder is sucked up one by one by the suction device, starting from the upper layer, and is supplied to the printing unit where printing is performed. be done. In this case, the paper stacking table automatically rises as the paper weight decreases due to paper feeding, and the upper end surface of the stacked papers is maintained at a constant height. When the paper on the paper stack runs out due to paper feeding, the machine is stopped, the paper stack is lowered to its lower limit, and the empty paper stack is replaced with a paper stack that has been loaded with paper in advance. , the paper stacking table is raised to a predetermined position, the paper stacking table is switched to automatic raising, and paper feeding is resumed.

However, in such conventional paper feeding and stacking devices, productivity decreases because the machine is stopped and reloading is performed, and the occurrence of paper waste increases when printing is resumed, so it is necessary to stop the machine. Paper feeding and stacking devices that allow paper to be transferred without stopping have been proposed and put into practice.

[Problem to be solved by the invention]

However, conventional paper feeding and stacking devices of this type require a skilled technique and are not necessarily satisfactory in terms of ease of production. Moreover, the work must be done in a short time, and if you are not careful, paper feeding failures will often occur during this time, causing the machine to stop.

[Means to solve the problem]

In order to solve these problems, the present invention provides a pair of left and right stacks between a paper stacking platform that automatically ascends with paper stacks loaded with paper, and a preliminary paper stacking device that loads the next paper. The guide rails are horizontally extended in the front and back direction, and a support member that is driven forward and backward in the front and back direction is installed between these left and right guide rails, and the paper stack is supported by the support member and is attached to the paper stack by moving back and forth. A plurality of forks are installed in and removed from the groove at the raised position of the paper stack, and a paper presser is provided that presses the edge of the paper around the fork when the fork is removed, and is movable toward and away from the edge of the paper. Ta.

[For production]

Paper stacked on the paper stacking board via the paper stacking board is sucked by a sucker device and supplied to the printing unit, and the paper stacking board is automatically raised as the paper is fed. During this printing operation, the next sheet of paper is stacked on the paper stacking board 1 of the preliminary paper stacking device. When the number of paper being fed runs low and the paper stack rises to a predetermined position, the support member moves forward and the fork is inserted into the groove of the paper stack, so that the paper that is running low is caught by the fork while being fed. As the paper continues to be loaded, the released paper stacking platform drops down.

Then, the empty paper stack is removed, the next paper is loaded on the paper stack, and the next paper is fed onto the paper stack, and the paper stack is raised and the -F edge of the paper is received by the fork. When approaching the paper, the paper stacking platform stops for a moment.

After adjusting the position of the upper F paper, the paper stacking table rises slightly so that the upper and lower papers come into contact with each other, so the fork is removed and normal paper feeding begins. When the fork is removed, the paper presser moves forward and presses the edge of the paper around the fork, so the paper does not shift following the fork as it is removed.

〔Example〕

1 to 8 show an embodiment of the paper feed stacking device according to the present invention, FIG. 1 is a schematic side view of the entire device, FIG. 2 is a plan view of a fork, its support portion, and a drive device, Figure 3 is a plan view of the lifting drive device, Figure 4 is a side view,
FIG. 5 is a front view of the fork advance/retreat drive device, FIG. 6 is a side view thereof, FIG. 7 is a side view of the paper stack, and FIG. 8 is a sectional view of the paper presser. In the figure, a pair of left and right frames l formed in an inverted shape are erected on the floor foundation, located behind a printing unit (not shown), and the rear end of the horizontal member is connected to the support column 2. is supported on the floor. A drive shaft 3 and a driven shaft 4 are rotatably supported between the left and right frames 1, and four sprockets 5 and two sprockets 6 are respectively mounted on these two wheels 3.4. It is worn.

A paper stacking table 9 formed in the shape of a rectangular plate is suspended from a lifting chain 7°8 stretched over a sprocket 5.6.
A paper stack i1'0 is mounted on the paper stack table 9.

The paper stack 10 is formed into a rectangular plate shape, and on its top surface,
A plurality of grooves 10a extending in the front-rear direction are arranged side by side in the left-right direction, and the paper stacks 11 are stacked on the paper stack 10. The drive shaft 3 is connected to a drive device (not shown) and is driven to rotate in forward and reverse directions, and the paper stacking table 9 is configured to be raised and lowered via a lifting chain 7.8 by the forward and reverse rotation. . Then, the paper 11 is suctioned one by one from the upper layer by a sucker device (not shown) and supplied to the printing unit, and the paper stacking table 9 is configured to automatically rise as the paper 11 decreases due to paper feeding. There is. This lifting/lowering drive device can be switched to manual mode, and the paper stacking table 9 can also be moved up/down by pressing a button or the like.

From below the paper stacking table 9, two rails 12 are laid forward on the floor surface, and above the rear end of the rails I2 is a preliminary paper stacking device, generally designated by the reference numeral 13. It is provided °ζ. This preliminary paper stacking device 13 is equipped with a trolley 14 that can be driven by hand on a rail 12, and on this trolley 14, the above-mentioned G!H! Paper stack 1 same as slope 10
0A is loaded on the paper stack 10A, and the next paper 11A is loaded on the paper stack 10A during printing work. I5 is a lock handle that fixes the trolley 14 to the rail 12 when stacking paper. A pair of left and right brackets 18 are slidably fitted onto a guide shaft 17 that connects the upper ends of the left and right columns 16 erected on the floor, and each bracket 1-18 has a A front plate 19, which brings the front ends of the sheets of paper 11A into contact with each other to align them, is suspended with its lower end slidably engaged with a guide 20. The front cover 19 is adjusted by moving in the left-right direction according to the paper size. Further, a pair of upper and lower brackets 21 are fixed to the left and right columns 16, and a pair of left and right horizontal levers 22 that abut and align the side edges of the paper 11A are supported so as to be movable in the left and right direction. The movement is configured to be adjusted accordingly.

The preliminary paper stacking device 13 and the paper stacking table 9 configured in this way
A fork for temporarily receiving the paper of the small seal, its supporting device, and a driving device are provided between the fork and the fork. That is, a pair of left and right lifting guides 24 are fixed to the rear end of the horizontal member of the frame 1, and the lifting guides 24 are provided with guide grooves 24a. 6 has a guide groove 16a corresponding to the guide groove 24a.
is provided. Reference numeral 25 denotes a pair of left and right guide rails formed in a long plate shape extending in the front-rear direction, and a rack 26 having a square cross section is integrally fixed with bolts inside the guide rails. 25 is a lowering working position shown by a solid line in FIG. 1 and a chain line by fitting a roller 27 pivotally mounted at one end and a guide portion 25a at the other end so as to be able to slide freely in the guide grooves 24a and 16a. It is supported so that it can be raised and lowered between the raised and withdrawn position shown in . A motor 28 having a horizontal motor shaft is fixed to a motor stand 28a fixed to the upper end of one of the lifting guides 24, and a sprocket 29 attached to the motor shaft and a left and right lifting guide A chain 32 is stretched between a sprocket 31 on a sprocket shaft 30 that is slidably mounted between the sprocket shafts 24 and 24. Furthermore, a chain 34 with a weight hanging from one end is stretched over the sprocket 33 which is pivoted on the sprocket shaft 30, and the sprocket 35 on the sprocket shaft 30 and the rear ends of the left and right horizontal stays 36 A chain 39 with a weight suspended from the negative end is stretched between a sprocket 38 loosely mounted on a round stay 37 that connects the two. The lower ends of the chains 34 and 39 are respectively fixed to the front and rear ends of the left and right racks 26, and by rotating the motor 28 in the forward and reverse directions, the racks 26 are raised and lowered together with the guide rails. It is configured as follows. In addition, a limit switch (not shown) is provided near the sprocket 33, which closes the contact with a striker provided on the chain 34 side, so as to regulate the upper end limit and the lower end limit of the guide rail 25 as set. It is composed of

40 is a corner stay 42 with a rectangular cross section and a pipe stay 4 connecting the sides @ 41 and extending in the left-right direction.
A fork support stand as a support member integrally formed with the rack 26 and the guide rail 25 integral with the rack 26 supports the rollers 44 pivotally attached to the side plates 41 on both sides. The roller 44 is configured to be movable in the front-back direction while being transferred along. A motor 45 is mounted on the fork support base 40, and a pinion shaft 46 is rotatably supported between the left and right side plates 41. A chain 49 is stretched between a sprocket 47 that is attached to the motor shaft of the motor 45 and a sprocket 48 on the pinion shaft 46, and a pinion 50 that is attached to the pinion shaft 46 is attached to a rack. It meshes with 26. By doing this, the motor 45
When the motor shaft rotates, the pinion 50 rotates via the chain 49, and the fork support base 40 moves forward and backward while rolling the pinion 50 on the rack 26 that meshes with the pinion 50.

On the pipe stay 43 of such a fork support stand 40, a plurality of forks 51 which are formed in a bar shape and extend horizontally in the front-rear direction are protruded at the same pitch as the pads 10a of the paper stack board 10, The tip of the left and right guide rails 2
It is slidably supported by a holder 53 shown in FIG. 8 which is fixed to a corner stay 52 having a rectangular cross section and connecting the front ends of the two. With this configuration, when the guide rail 25 is in the yield state, when the fork support 40 moves forward and the fork 51 moves forward V, it is inserted into the groove 10a of the paper stack lO in the raised position. and supports the paper 11B that is decreasing.

In FIG. 1, a drive shaft 54 and a driven shaft 55 are rotatably supported between the left and right frames 1, and these shafts 54 and 55 have four sprockets 56 and two sprockets. 57 are each pivoted. A lift bar 59 is suspended from a lift chain 58 stretched over sprockets 56 and 57, and by rotationally driving the drive shaft 54 by a drive device (not shown), the lift bar 59 is moved to the illustrated position. The fork 51 has been raised and inserted into the groove 10a.
is configured to be supported by this lifting bar 59.

Furthermore, a pair of left and right air cylinders 61 extending in the front and back direction are fixed to the corner stay 52, and the working ends of the piston rods 62 are formed with a triangular cross section as shown in FIG. A paper presser 63 extending in the direction is fixed via a fixture 64. 1) (1) The fork 51 is slidably passed through four holes in the paper presser 63.The air cylinder 61 is provided with a locking device 62a that fixes the piston rod 62 at a predetermined timing. This is G11A, IIB on the paper presser 63.
A paper detection switch 63a is provided which detects contact with the paper and issues a signal. With this configuration, when the fork 51 inserted in the paper 10a is removed, the air cylinder 61 is operated to move the paper presser 63 forward and push the trailing edge of the paper 1IBO, causing the paper 11B to shift. Never. When holding the paper, the piston rod 62 is fixed by the lock device 61a a moment after the paper detection switch 63a contacts and detects the paper 11A, IIB, so that the piston rod 62 is fixed by the locking device 61a. 11
The paper presser 63 can be fixed with a preload applied to B.

In this device, since the motor 45 moves vertically and in the front-rear direction, the electrical wiring for the motor 45 is supported by flexible chains indicated by reference numerals 65 and 66 in the figure. Further, limit switches 6B, 69., which close the contacts by contacting the striker 67 on the side of the fork support base 40 to restrict the movement of the fork 51 at three locations, are provided on the guide rail 25 on one side. 70 is fixed.

The operation of the sheet feeding and stacking device configured as above will be explained. The paper sheets 11 stacked on the paper stacking stand 9 via the paper stacking board 10 are sucked one by one from the upper layer by a sucker device and supplied to the printing unit. Since the drive shaft 3 is rotationally driven by the drive device in accordance with the feeding of paper, the paper stacking table 9 is raised via the elevating chain 7.8, and one end surface of the cover 11 is always maintained at a predetermined height. While printing is being performed while feeding paper in this manner, paper 11A is placed on the paper stacking board 10A placed on the trolley 14 of the preliminary paper stacking device.
Load the paper while aligning the edges with 0 Normally, guide rail 2
5 is stored in the upper part, and when a detector (not shown) fixed to the frame 2 detects that the paper stacking table 9 has been raised one step downward near the position where the paper stack 51 is inserted, it moves to the lowering position. It's coming down.

The paper stacking table 9 rises as paper is fed, and when it rises to the position shown by the chain line in FIG. As the engaging pinion 50 rotates, the fork support base 40 moves forward while the pinion 50 rolls on the rack 26, and the fork 51 also moves forward below the paper 11B that is running low, and the paper stack 10 is full 10a.
inserted into. The forward limit of the fork 51 is regulated by a limit switch 70. Simultaneously with the insertion of the fork 51, the drive shaft 54 is rotated by the drive device, and the lowered lifting bar 59 rises to the position shown in FIG. 1 and lightly contacts the fork 51. With this, the paper stacking board 9 is separated by supporting the girder 11B and the fork 51, so when the drive shaft 3 rotates, the paper stacking board 9 loads the empty paper stacking board 10, as shown by the solid line in FIG. Descend to the lowering limit position.

After removing the empty paper stack temporary IO, the front support 19 and the side 1 22 are opened, the trolley 14 is moved forward on the t-rail 12, the paper 11A is supplied, and then the trolley 14 is pulled out and placed at the paper stack position. to be evicted. Note that the paper stacking platform 9 is formed of a pair of bars, and at its lowering limit position, the trolley 14
It has a structure that allows it to be put in and taken out, but a detailed explanation will be omitted.

At the same time as the paper 11A is supplied, the drive shaft 3 rotates and the paper stacking table 9 carrying the paper 11A rises, and the upper end surface of the paper 11A is detected by a detector (not shown) provided at a lower position close to the fork 51. Then, there is a temporary stop, and an adjustment device (not shown) is operated to align the left and right positions of the upper paper 11B and the lower paper 11A. When the completion of the work is instructed, the drive shaft 3 rotates slightly, the paper stacking table 9 rises, and the upper and lower rows 11B, 11
When A comes into contact, a load detector (not shown) provided on the lift bar 59 detects this, and at this time, the piston rod 62 of the air cylinder 61 moves forward, and the paper presser 63 fixed to it moves forward, causing the upper and lower Press the edge of the contact portion of paper 11B and IIA. In this state, the motor 45 rotates in the opposite direction and the fork support base 40 retreats, so that the fork 51 also retreats and comes out from between the upper and lower gills 11B and IIA. fork 5
When pulling out the paper 11B, the weight of the paper 11B is applied to the fork 51, so the papers 11B and 11A follow the fork l and try to shift in the pulling direction, but the paper 11A of the fork 51
The rear edges of the 51 sides of the upper and lower edges 11B and 11A are held down by the paper presser 63, so that they do not shift. In addition, after the paper detection switch 63a comes into contact with the paper presser 11A and IIB and detects this, the locking device 61a activates the paper presser 6 with a momentary delay.
3 is fixed, and the paper presser 63 is fixed with preload applied to the paper presses 11A and II [3, so even if the paper size changes, it can be handled without adjustment. fork 5
1 is removed, the piston rod 62 of the air cylinder 61 retreats and the paper presser 63 retreats.

When working between the paper stacking table 9 and the preliminary paper stacking device 13 for maintenance or inspection of the sucker device, etc., when the motor 28 is started, the guide rail is moved through the chain 32, 34, 39. 25 is the fork 5I and the fork support stand 40
With this, the head is raised to the head position F indicated by the chain line in FIG.

〔Effect of the invention〕

As is clear from the following explanation, according to the present invention, in a paper feed stacking device of a sheet-fed printing press, a paper stacking table of the paper feeding device;
A pair of left and right guide rails extending in the front-rear direction is provided between the preliminary paper stacking device and a support member that is driven forward and backward in the front-rear direction is supported between these guide rails. A plurality of forks are installed to be inserted into and removed from the grooves temporarily prepared for paper stacking when the stacking board is in the raised position, and a paper presser is installed to press the edges of the paper around them when the forks are removed in the distance direction relative to the edge of the paper. By allowing the machine to move forward and backward, it is possible to feed paper continuously without stopping the machine by simple wet operation, which improves operability and eliminates paper waste caused by stopping the machine. , even if you are not familiar with the process, paper feeding failures will not occur and productivity will improve.

Furthermore, because of its structure, it is easy to automate a series of operations, so automating this will further improve operability and productivity. In addition, when the fork is removed, the edge of the paper around it is held down by a paper presser, so the paper does not shift even if the weight of the paper is acting on the fork (this prevents paper feeding failure and paper waste. can do.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the paper feed stacking device for a sheet-fed printing press according to the present invention, FIG. 1 is a schematic side view of the entire device, and FIG. 2 is a fork, its support portion, and drive. A plan view of the device, FIG. 3 is a plan view of the elevating drive device, FIG. 4 is a side view of the elevating drive device, FIG. 5 is a front view of the fork advancement/retraction drive device, and FIG. 6 is a side view of the fork advancement/retraction drive device. FIG. 7 is a side view of the temporary paper stack, and FIG. 8 is a sectional view of the paper presser. 9...Paper stack stand, 10...Temporary paper stack, 10a...
・Groove, 11. IIA, IIB... paper, l3...
Spare paper stacking device, 16... Support, 24... Lifting guide, 25... Guide rail, 2... Rack, 40... Fork support stand, 44... Koro, 4
5...Motor, 49...Chain, 50...
・Binion, 51... Fork, 54... Drive shaft, 58... Chain, 59... Elevating bar,
61...Air cylinder, 62...Piston rod, 63...Paper holder.

Claims (1)

[Claims] In a sheet feeding paper stacking device for a sheet-fed printing press, which is equipped with a paper stacking table that automatically raises a paper stacking board loaded with paper, and a preliminary paper stacking device that stacks the next paper during paper feeding, A pair of left and right guide rails extending horizontally in the front-rear direction is installed between the paper stacking table and the preliminary paper stacking device, and a support member that is driven forward and backward in the front-rear direction is supported between these left and right guide rails. A plurality of forks are provided that are fixed to a supporting member and are inserted into and removed from grooves provided in the paper stack by advancing and retreating at the raised position of the paper stack. A paper feed stacking device for a sheet-fed printing press, characterized in that a paper presser for pressing the paper is provided so as to be able to move forward and backward in a direction near and far from the edge of the paper.