JPS61145045A - Piling device for paper feeder in leaf printing machine - Google Patents

Abstract

PURPOSE:To automize such operations as transfer and feed of paper, and a control of the paper piling position, and others by allowing a pallet to be smoothly taken in or driven out, and also allowing the paper piling position to be smoothly controlled so as to enable a paper piling table to be lifted where the pallet is fixed positively. CONSTITUTION:A paper piling pallet 11 which is placed backward on the floor, is pushed into a place where a paper piling table 2 is stopped at its lower limit position. This allows the pallet 11 to move upward on the paper piling table while guide rollers 8 are rotated. And the pallet is fixed with a magnet 20 after it has stopped. Accordingly, when the paper piling table 2 is actuated to be lifted, the paper piling table 2 is allowed to be lifted leaving the guide rollers 8 in the pit side where the movement of the table 2 is controlled by means of the magnet 20 while being supported by supporting rollers 17. When a printing operation starts, the magnet 20 is demagnetized allowing the pallet to move easily where the position of the paper piling table is controlled before the printing operation starts or during the printing operation. And when the paper is exhausted, the paper piling table 2 is lowered, and the pallet allows the magnet 20 to be demagnetized when it seats on the guide rollers 8 permitting the pallet 11 to be driven out of the device.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a paper feeding paper stacking device for stacking printing paper onto a paper stacking table via a pallet (1) in a paper feeding section of a sheet-fed printing machine. .

[Conventional technology]

In printing operations using a sheet-fed printing press, the paper stacked on the paper stacking table in the paper feed section via a pallet is sucked one by one from the top layer by the sucker device and fed onto the interfering plate before being delivered to the front. After the positions (ftt-) in the vertical and horizontal directions are adjusted by the pad and the horizontal needle device, the sheets are picked up one by one by the claws of the swing device and fed to the printing unit. Then, the image formed on the plate surface on the plate cylinder is transferred directly or via a blanket cylinder, and printing is applied to this paper.

In order to supply paper to the paper feed section in such printing operations, the general method is to scoop up a pallet loaded with paper with the fork of a forklift, transport it, place it on a paper stacking table, and then remove the fork. It is being If the paper on the pallet placed on the paper stacking table is misaligned in the left-right direction, the paper collides with the horizontal stitching device when it is fed onto the difference plate. Since many sheets of horizontal paper are generated when the paper is out of the pull-in range, it is necessary to move the pallet left and right to correct the paper position when the paper is misaligned before printing starts and during printing. Various paper stacking devices have been proposed that make this possible.

[Problem that the invention seeks to solve]

However, all conventional paper stacking devices of this type have complicated structures and cannot cope with the automation of transporting and supplying paper to the paper feed section of a printing press, which has been developed in recent years.

[Means for solving problems]

In order to solve this problem, the present invention includes a paper stacking table that can be raised and lowered through a plurality of rolling holes and a magnet hole, and a portion of the stacking table that protrudes upward from the roller hole at the lower limit of its descent into the pit. A pallet is loaded with paper and is pushed in while rolling the guide rollers from the floor behind the paper stack, and is supported on the paper stack by a driving means. A plurality of supporting rollers that roll when the pallet moves left and right, a magnet that is supported on the paper stacking table side and attracts and fixes the paper stacking table by excitation when it is not moving left and right or back and forth; A dynamic drive means is provided.

[Effect]

With this configuration, when a paper stacking pallet prepared on the floor behind the paper stacking table is pushed into a place where the paper stacking table is stopped at the lower limit, the pallet does not roll the guide rollers. It moves from the top onto the paper stacking table, and after stopping, it is fixed with a magnet, so when the paper stacking table is raised, the paper stacking table leaves the guide rollers on the pit side and is supported by the support rollers, and its movement is regulated by the magnets. be and rise. After being raised, printing work begins, but before printing or during printing, the magnet is demagnetized and the pallet can be moved. When the paper on the pallet runs out, the paper stacking platform is supported by the support rollers on the pallet and moves downward while being restricted by magnets. When the pallet is seated on the guide rollers, the support rollers separate from the pallet, so the magnet is demagnetized and the pallet is removed. 11-
Push it out of the machine.

〔Example〕

1 to 6 show an embodiment of the paper stack position regulating device according to the present invention, FIG. 1 is a front view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is a side view of the main parts, Figure 4 is an AA sectional view of the main part of Figure 4, Figure 5 is an enlarged sectional view of the vicinity of the sensor, and M
FIG. 6 is a plan view of the pallet extrusion device. In the figure,
The paper stacking device, designated as a whole by reference numeral 1, is equipped with a paper stacking table 2 consisting of a rectangular plate 2a having notches at four corners and vertical members 2b bolted to both ends thereof. 2
In the central part of b, an elevating plate 3 formed by connecting the four corners of a pair of square plates 3a with guide pins 3b is fixed by a lower guide pin 3b, respectively.

On the other hand, long guide bars 5 are vertically fixed to the left and right feeder frames 4, and the paper stacking table 2 can be raised and lowered by engaging with the left and right lift plates AI guide bars 5. Supported. The paper stacking table 2 is suspended at its four corners by lifting chains (not shown), and is moved up and down guided by a guide bar 5 by manual operation or motor drive based on detection of the top surface of the stacked papers. The lower limit of the paper stacking table 2 is set so that it enters the pit T lower than the floor surface 6, as indicated by the reference numeral in FIG.

Reference numeral 8 denotes a plurality of guide rollers rotatably supported in the pit T via brackets 9, the upper ends of which are connected to the floor surface 6.
The roller holes 10 are set so that the height is set to be almost on the same plane as the paper stacking table 2. The paper stacking table 2 is allowed to descend below the floor surface. Reference numeral 11 denotes a pallet made of iron plate, which is loaded with paper 12 and mounted on the paper stacking table 2. It is reinforced by a frame material, and has a concave part on the underside that allows it to be scooped up with a forklift 7 oak or the like. In preparation for
This pallet 11 is transported by a forklift or the like with reference numeral 1 in Fig. 3.
After being transported to the position indicated by 1A, the pallet 11 is loaded onto the paper stacking table 2 which is pushed in the direction of arrow B by a pushing device (not shown). Move while rolling. Reference numeral 13 denotes a plurality of front support bars that align the front ends of the paper 12 by bringing the front end surfaces of the pallet 11 into contact with the paper 12, and are arranged vertically in parallel by stays 14 etc. that connect the left and right feeder frames 4. Supported. In addition, in Fig. 3, pallet 1
1, the raised position is shown by a solid line, and the lowered position is shown by a chain line. Further, in the case 12, the largest paper is shown by a solid line, and the smallest paper is shown by a chain line.

The paper stacking table 2 includes a roller that supports the pallet 11 when it is raised, and a magnet that fixes the pallet 11.
A regulating device is attached that moves the pallet 11 in the left-right direction and correctly positions it in response to a signal from a sensor of a detection section, which will be described later. That is, a plurality of rolling holes 15 (a total of 12 holes in 2 columns and 6 rows in this embodiment) are bored in the plate 2a of the paper stacking table 2. Rotatable support roller 1 mounted via bracket 16
T is involved. This support roller 1T is
1 is seated on the guide roller 8, its height is set so that there is a gap between it and the pallet 11, and when the paper stacking table 2 rises leaving the guide roller 8t, the support roller 11 It is configured to contact the pallet 11 and raise it integrally, and to support the pallet 11 so as to be movable in the left and right direction.

Further, a plurality of (four in this embodiment) magnet holes 18 are bored in the plate 2a of the paper stacking table 2, and a support 19 is inserted into the magnet holes 18 on the back side of the plate 2a. A cylindrical magnet 20 supported by the cylindrical magnet 20 is engaged. The magnet 20 attracts the shivelet 11 by excitation and stops its movement. When the pallet 11 is seated on the guide roller 8, the magnet 20 and the pallet 11 Although a gap is formed between the pallet 11 and the pallet 11, the gap is set small so that a suction force acts on the pallet 11 even in this case. The magnet 20 is excited and demagnetized at predetermined timing by the control device.

A pair of brackets 21 and 22 are fixed to the plate 2a of the paper stacking table 2 at the center of the back surface, and one bracket 21 has a sensor, which will be described later. A motor 23 is fixed as a means for driving the paper stacking table left and right, which rotates forward and reverse in response to signals from 54 and 55.

A screw shaft 24 extending in the 4 directions of both feeder frames is pivotally supported on both platens 21 and 22, and a gear 25 attached to this screw shaft 24 is connected to a gear 26 on the motor shaft.
It meshes with the. Reference numeral 21 denotes a pair of bars that extend in a direction perpendicular to the screw shaft 24 by threading female thread members 27a to 27a k onto threaded portions at both ends of the screw shaft 24. A slidable support portion of a support shaft 29J supported via a bracket 2B is engaged with the corner portion.

At both ends of each left and right support shaft 290, a claw holder 30 is attached to the support shaft 2.
A nail 32 is fixed to the tip of each nail holder 30 at right angles to the pallet 9 by a nand 31, and stands upright with the upper end entirely facing the lower end of the pallet 11. By doing this, when the motor 23 is rotated, the gear 26
．． 21, the screw shaft 24 rotates, and due to the screw action, the left and right bars 27 move in the same direction while sliding the support portions at both ends on the support shaft 29, and the pallet 11 is pushed and moved by the claw 32. It is configured as follows. In this case, the pallet 11 moves while rolling the support 611, and the moving direction differs depending on the rotational direction of the motor 23. 33.3
Reference numeral 4 denotes a limit switch mounted on the left and right rear end of the plate 2a in two places and connected to the power source of the motor 23, and the actuator includes a plate 3 fixed to the claw holder 30.
The claws 5 and 36 are in contact with each other and serve as a safety device that operates at the limit of left and right movement of the claw 32 to stop the motor 23. Further, 3T is a lateral force lever that is manually moved in the left and right direction to bring both ends of the paper 12 into contact when changing the paper size.

Next, the detection section for regulating the paper stack position will be explained.

There are two stays 3, large and small, between the left and right feeder frames 4.
8.39 is the front bar 1 that regulates the front end of the paper 12;
Both stays 38 and 31 are connected at four points in the middle by brackets 40 and 41.

Further, a motor stand 43 is provided between one of the brackets 40 and another bracket 42 fixed to the stay 38.
A motor 44 is fixed on the motor stand 43 and rotates at a predetermined number of revolutions by operating a push button selected in accordance with the paper size. A motor shaft 45 of this motor 44 has its lower end supported by a bracket 40 through a stay 38'jk page, and a bevel gear 46 is pivotally attached to the lower end of this motor shaft 45.

Further, between the four brackets 40, a screw shaft 47 having a right-hand thread 47m and a left-hand thread 47b on the left and right is rotatably supported with its intermediate portion connected by a coupling 48.
A bevel gear 49 that is pivotally attached to the threaded shaft 47 of the motor shaft 45 meshes with the bevel gear 46 of the motor shaft 45 . so, si
1 is a senna holder screwed into each of the right-hand thread 47a and the left-hand thread 47b of the screw shaft 47, and
An L-shaped support plate 53 is bolted to each sensor holder 50, 51. And each support plate 5
3, two sensors 54 and 55 are attached close to the front end of the upper surface of the raised paper 12, and a photoelectric switch is used in this embodiment. These sensors 54.55
As shown in an enlarged plan view in FIG. 5, they are arranged so as to be out of phase with each other in the front-back direction, and also out of phase with each other in the left-right direction. That is, a horizontal needle device (not shown) is provided between the paper stacking device 1 and the printing unit, which regulates the position of the paper edge by drawing the paper edge with upper and lower rollers and bringing it into contact with the gauge. In addition, paper alignment using the gauge is best when the amount of retraction by the roller is about 5 to 6 m, so it is necessary to adjust the paper stacking position so that the edge of the paper is at this position. The paper stacking position is regulated so that the distance t between the gauge position of the horizontal needle device and the end of the paper 22, indicated by the reference numeral in FIG. 5, is about 5 to 6 ma±2M. For this reason, in Fig. 5, the symbol 1 + 10t
The distance between the two sensors 54 and 55 indicated by 2 is set to about 4W, and the motor 23 is configured to stop only when only the inner sensor 54 detects the presence of the paper 12. There is. Then, the paper 12 moves inward and the senna 54
．． When the sensor 55 no longer detects the paper 12, the sensor 54
The motor 23 rotates forward by a predetermined number of rotations in response to a signal from
are regulated to the illustrated positions where both are about 2w.

Furthermore, when the paper 12 moves outward and the sensors 54 and 55 both detect the paper 12, the motor 23 is reversely rotated by a predetermined number of rotations in response to a signal from the sensor 55, causing the paper 12 to move inward together with the pants top 11. It is configured to move and be regulated to the illustrated position where both tl r tz are about 2W.

The one shown with reference numeral 56 in FIG. 1 is a stay 38°39″l
r: A limit switch supported by the connecting intermediate frame 57, which is configured to abut the upper surface of the paper 12 at the upper limit of the rise of the paper stacking table 2 which is raised and lowered by the lifting device and stop the rise. Further, a pair of left and right limit switches 58 and 59 are supported on the bracket 40, and when the sensor holder 51 comes into contact with these at the limit of left and right movement, the motor 44 is stopped and prevented from overshooting. It is composed of The encoder indicated by the reference numeral 60 is supported by the bracket 40 and drive-coupled with the screw shaft 47 by bevel gears 61 and 62, and is connected to the control device and connected to the screw shaft 4T. It is configured to memorize the rotation, that is, the amount of movement of the sensors 54, 55, and send a signal to the control device.

Next, the pallet extrusion device will be explained based on FIG. In the figure, in front of the pallet 11 that is in contact with the front support bar 13, the stay 14 that supports the front support bar 13 is installed by connecting the feeder frame 4, and the feeder frame 4 is connected to the stay 14. They are connected by parallel beams 63. In front of such a feeder frame 4, a difference plate to which a cross needle device (not shown) is attached extends, and a pallet extrusion device 64 is disposed below this difference plate. That is, the left and right feeder frames 4
The bases of a pair of left and right air cylinders 67 are supported via brackets 68 on a beam 66 that connects the brackets 65 that protrude forward from the base. is supported via an L-shaped bracket 69. Air cylinder 6
The tip surface of the piston rod 10, which moves back and forth with the air pressure of γ, is
It faces the front end surface of the pallet 11 at the lower limit, and hard rubber 71 for cushioning is adhered to this front end surface.

When the pallet 11 is lowered after paper feeding, the empty pallet 11 is pushed out of the machine by moving the piston rod 70t of the air cylinder 6T forward. T2 is an electromagnetic switching valve that is fixed to the beam and electrically connected to the control device, and opens and closes the air passage to the air cylinder 67 at a predetermined timing.T3 is fixed to the center of the stay 14 and is connected to the switchboard. When the pallet 11 is pushed onto the paper stacking table 2, it is a proximity switch that detects slipping before it comes into contact with the front bar 13 and closes it.

The operation of the paper stacking device configured as described above will be explained by taking as an example the case where the paper size changes from the largest paper to the smallest paper. First, the horizontal needle device (not shown) is moved inward and adjusted so that its gauge comes to the line shown in FIG. 5, which corresponds to a predetermined position on the printing plate. Next, when the push button for minimum paper is pressed, the motor 44 rotates, and the rotation of the screw shaft 4γ moves the sensor holder 50° 51 from the chain line position to the solid line position in FIG. Stop at the position shown in Figure 1lc5, which is 5 to 6 wm away from the ground. Therefore, paper 12
7'C is loaded at the center position and prepared at the rear of the paper stacking table 2.
When the pallet 11 is pushed onto the paper stacking table 2 which is stopped at the lowered position, only the guide roller 8 protrudes upward from the paper stacking table 2, so the pallet 11 is pushed onto the paper stacking table 2 which is stopped at the lowered position.
It moves while rolling and stops when it hits the front bar 13. In this state, the magnet 20't is energized and the pallet 11t is suctioned and fixed to the paper stacking table 2 side, and then when the paper stacking table 2 is raised by the lifting device, the paper stacking table 2 moves with the guide rollers 8t-pitch) 7 ( Leave it on i!l and palletize with support roller 17) 11t
- Ascend while supporting. In this case, even if the pallet 11 is placed on the support rollers 1T, it is attracted by the magnet 20, so it does not move left or right. And paper 1
2 comes into contact with the limit switch 56), the motor is stopped and the paper stacking table 2 stops rising.

When the Senna 54 and 55 are turned on, the magnet 20 is demagnetized and the sensors 54 and 55 are connected to the paper 12.
detects the end of the paper, and if the end of the paper has gone too far inward and has come off both sensors 54 and 55, the motor 23 rotates in the forward direction, and the pawl 32 passes through the gears 26 and 25 and the screw shaft 24
moves to the left of the figure along bars 21 and 7. Therefore, when the pallet 11 moves to the left while fully rolling the support rollers 17 and the end of the paper comes between the sensors 54 and 55, the motor 23 is stopped by the signal from the sensor 54, and the paper stacking table 2 is moved to the left. , the paper 12 is stopped at the correct paper stacking position. Also, the edge of the paper went too far outside and both sensors 54.55
If this is detected, the motor 23 rotates in the reverse direction in response to a signal from the sensor 55, and the pawl 32 moves to the right, thereby regulating the paper stacking position. At the same time as the regulation, the magnet 20 is excited and the pallet 11 is fixed.

When the printing operation starts, a sucker device (not shown) sucks up 12 tons of paper one by one from the upper layer and sends it onto the interfering plate, where it is captured by the upper and lower rollers of the horizontal needle device and pulled into the gauge with a roar. It will be done. In this case, because the paper stacking position is regulated, the paper edge passes through a position 5 to 6 wm away from the gauge, and the paper 12 is drawn in well by the roller and its position is correctly regulated by the gauge. The paper 12 calibrated by the horizontal needle device is fed to a printing unit and printed at the correct position.

If the paper edge position shifts due to paper stacking failure during printing, the sensors 54 and 55 detect the paper edge and the magnet 20 is energized and demagnetized simultaneously in the same manner as described above, and the paper stack position is regulated. be done. Then, the paper stacking table 2 automatically rises as the paper is fed, and when the paper 12 runs out and the pallet 11 comes into contact with a limit switch (not shown), the printing unit performs body removal and the paper stacking table 2 lowers. , it stops at the lower limit position shown in FIG. 3 by the action of a limit switch (not shown). At this time, after the pallet 11 is seated on the guide rollers 8, the paper stacking table 2 is slightly lowered, so that the support rollers 1
1 and magnet) 20 are separated from the pallet 11.

Next, the magnet 20 is demagnetized and the piston rod 70 of the air cylinder 67 moves forward by switching the electromagnetic switching valve 72, so that the pallet 11 is pushed out of the machine while causing the support rollers 11 to roll.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in a paper feed stacking device for a branch printing press, there is provided a paper stacking table that can be raised and lowered and has a plurality of ζ holes and magnet holes, and A plurality of guide rollers are supported on the pit side so that a portion of the descending plate protrudes upward from the roller hole, and paper is loaded and pushed in while rolling the guide rollers from the floor behind the paper stacking table. A pallet that is supported on the paper stack side and rolls when the pallet is moved left and right by a drive means, and a plurality of supporting rollers that are supported on the paper stack side and are energized to move the paper stack side when moving left and right and back and forth. A magnet that attracts and fixes the paper stack at other times and a drive means for moving the paper stacking table horizontally are provided. When a pallet is taken in and out of the paper stacking table, the magnet is demagnetized and only the guide rollers are rolled without contacting the support rollers. When the paper stacking table is moved up and down, the magnet is energized to move the guide rollers up and down without contact, and when the paper stacking position is adjusted, the magnet is demagnetized to enable the movement of the pallet. The loading and unloading of pallets and the adjustment of the paper stacking position are extremely smooth, the paper stacking table can be raised and lowered while the barrel l-' is securely fixed, and the structure can be simplified. In addition, since it is easy to incorporate into the control device,
transportation of paper.

It is possible to easily automate a series of operations such as supply and paper stack position regulation.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the paper feed stacking device for a sheet-fed printing press according to the present invention, FIG. 1 is a front view thereof, FIG. 2 is a plan view thereof, and FIG. FIG. 4 is an AA sectional view of the first fixed portion, FIG. 5 is an enlarged sectional view of the vicinity of the sensor, and FIG. 6 is a plan view of the pallet extrusion device. 1...paper stacking device, 2...-paper stacking stand, 4...feeder frame, 7#...pit, 8mmmm guide roller, 9...+10# bracket, 10...roller JL
% 11, 11A・Pallet, 12-・Paper, 17・Support roller, 18φ・Magnet hole,
190 work/φ support stand, 20... conflict magnet, 231
1...Motor.

Claims (1)

[Claims] A paper stacking stand formed into a rectangular plate shape, each having a plurality of roller holes and magnet holes passing through both the front and back sides, and supported on the paper feed frame side so as to be able to rise and fall freely, and this paper stacking stand lowered into the pit. A plurality of guide rollers are rotatably supported on the pit side with a portion protruding upward from each roller hole at the lowering limit of the roller hole, and paper is loaded and the guide rollers are rolled from the floor behind the paper stacking table. A pallet that is pushed in while moving,
A plurality of the pushed pallets are rotatably supported on the paper stacking table side with their upper ends positioned lower than the lower surface of the pushed pallet, and as the paper stacking table rises, the pallets are seated and roll by horizontal movement for positioning. a support roller, a magnet fixed to the paper stacking table side so that its upper end suction surface faces the lower end suction surface of the pallet, and which attracts the pallet by its excitation when the pallet is not moved back and forth or left and right; 1. A sheet feeding sheet stacking device for a sheet-fed printing press, characterized in that it is provided with a dynamic drive means.