JPH089445B2 - Paper stacker for sheet-fed printing press - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharge and stacking apparatus for stacking regular sheets of paper or sheets for sampling discharged after printing in a sheet-fed printing press.

[Prior Art] In a sheet-fed printing press, the paper printed with the printing unit is held by the nails of the paper ejection chain, conveyed by the traveling of the paper ejection chain, and released from the jaws of the paper ejection stacking device. Are dropped and loaded. Further, when the printing state is viewed during printing, another sheet discharging and stacking device for sampling is provided and the sheet is discharged and stacked on this.

In recent years, when the number of sheets loaded increases with the speeding up of printing in recent years, problems such as set-off occur. Therefore, in intaglio printing machines and letterpress printing machines, two paper ejection stacking devices are provided to alternately stack the sheets. It is a common practice to reduce the number of sheets and take out the stacked paper sheets from the machine while the other is being loaded.

For example, the one disclosed in Japanese Utility Model Publication No. Sho 61-9869 developed by the present applicant is a device suitable for this type of paper discharge, and this device uses a board on which the discharged paper is loaded as a guide rail. The paper is pulled out from the machine along with it, and the paper is taken out. The paper is easily taken out by raising and lowering the paper aligning plate in conjunction with the drawing and pushing of the board.

[Problems to be solved by the invention]

With this configuration, the paper can be easily taken out, but the laid-down paper aligning plate does not lift the edge of the paper but guides the paper by sliding it when taking it out. There is a problem that it is difficult to grasp and pull out the paper, and the paper slides on the paper aligning plate and is easily soiled when taken out. Further, since the height of the board is the same when the paper is loaded and when the paper is taken out, there is a problem in the relationship between the drop when the paper is dropped and the appropriate height when the paper is taken out. Also, there is a method in which the board is tilted and the stacked paper sheets are slid out to be taken out, but there is a problem that the paper sheets are in sliding contact with each other and are easily soiled.

[Means for solving problems]

In order to solve such a problem, according to the present invention, a board assembly provided with a discharge stacking board, a parallel movement mechanism for moving the board assembly diagonally up and down in the front-rear direction, and a parallel movement mechanism of the parallel movement mechanism. The interlocking mechanism that interlocks the movement and the standing up and down movement of the paper guide of the stacked paper is provided, and the base of the paper guide is provided with a roller that lifts the end of the stacked paper when the paper guide falls.

[Action]

Drop the paper onto the board at a high position and stack it,
When the number of sheets reaches a predetermined number, when the four-bar link is linked by the drive device, the board moves in parallel diagonally downward, the front end of the board projects from the opening of the frame, and the paper guide interlocks and falls. When the paper guide falls down, the rollers at the base of the paper guide lift the front end of the stack of paper to form a gap with the boat, so insert a finger here to grasp the paper end and take the paper out of the machine. After taking out, the original state is restored by the reverse operation.

〔Example〕

1 to 8 show an example in which the paper discharge stacking apparatus according to the present invention is used for sampling of an intaglio printing machine. FIG. 1 is a side view seen from the side opposite to the printing unit, and FIG. 2 is the same. FIG. 4 is a plan view, FIG. 3 is an enlarged front view as seen from A of FIG. 1 showing a state when the paper is taken out, and FIG. 4 is a side view as seen from B of FIG.
FIG. 7 is an enlarged front view of FIG. 1 as viewed from C, FIG. 6 is an enlarged front view of D as viewed in FIG. 1, FIG. 7 is an enlarged front view of E as viewed in FIG. 1, and FIG. 8 is enlarged FF as illustrated in FIG. FIG.

In the figure, in the paper ejection device of the intaglio printing machine, a first paper ejection stacking device, a second paper ejection stacking device, and a sampling paper ejection stacking device are arranged in order from the printing unit side along a lower path of the paper conveyance path. The paper discharge chain that conveys the paper is configured to release the paper while gripping the paper and selectively discharge the paper to any one of the paper discharge stacking devices in the return path opposite to the above. The left and right paper discharge frames are placed at the positions indicated by reference numerals 1 and 2 in FIGS.
(Indicated by an arrow G in the figure), the frame 1 on the operating side is opened at a position corresponding to each discharged sheet stacking device so that paper can be taken out.

The paper discharge stacking device 3 is a machine in which vertical members 4a, 4b and horizontal members 4c, 4d are formed into a rectangular frame, and three lateral members 4c, 4d are connected by plate-shaped stays 4e, 4f, 4g. A frame 4 is provided, and the machine frame 4 is fixed to the frames 1 and 2 in a horizontal posture by fixing brackets 5 and 6. Reference numeral 7 is a bracket for fixing the fixing member 6 to the vertical member 4b. A pair of left and right bearings 8 and 9 are respectively fixed to the stays 4e and 4g corresponding to the lateral members 4c and 4d, and a pair of intermediate bearings 10 suspended from the stay 4e are provided in the bearings 8 of these. A swivel drive shaft 11 having a central portion rotatably supported is rotatably supported, and a short pin 12 is rotatably supported on the other bearing 9. Further, the bracket 13 hung at the central portion in the longitudinal direction of the central stay 4f.
A hydraulic cylinder 14, which serves as a fluid pressure cylinder, is pivotally supported by the piston rod 15. The working end of the piston rod 15 is fixed to the swivel drive shaft 11 and is pivotally attached to the free end of the lever 16. Then, both projecting ends of the swing drive shaft 11 and the left and right pins
Strip-shaped links 17 and 18 are fixed to four positions 12 and 12, respectively, and lower ends of a board assembly 20 described below are pivotally attached to upper ends of the links 17 and 18, respectively. . By doing so, when the piston rod 15 of the hydraulic cylinder 14 advances and retreats, the swivel drive shaft 11 rotates via the lever 16, and the board assembly 20 and the links 17 and 18 perform a four-joint link motion to cause the board assembly 20 to move. However, it is configured to move up and down with respect to the machine frame 4 and move up and down to move in parallel.

The board assembly 20 includes three side plates 21 except the frame 2 side.
a, 21b, 21c and an upper plate 21d are provided with a board 21 made of a plate material that opens downward, and the upper ends of the links 17, 18 are side plates 2
It is pivotally attached to 1a, 21c via bearings 22, 23. On the back surface of the upper plate 21d, four front and rear bearings 24 are fixedly hung, two each being divided above the link 17 and above the link 18.
Further, four brackets 25, which are front, rear, left and right, are fixedly hung from the rear surface of the upper plate 21d on the side of the front bearing 44. A screw shaft 28, a connecting shaft 29, and a screw shaft 30, which are integrally connected by couplings 26 and 27, are rotatably supported by the four bearings 24. The screw and the left screw are cut respectively. Reference numerals 31 and 32 are a pair of front and rear brackets in which screw holes are screwed into the screw shafts 28 and 30, respectively, and the guide holes are slidably fitted into the guide shaft 33 between the bearings 24. A horizontal paper guide shaft 34 is rotatably supported by the bracket 31, and a horizontal paper guide receiver 35 is fixed to the rear bracket 32. A pair of paper guides 36 for guiding one end of the falling paper are fixed to the left and right ends of the paper guide receiver 35 so as to project upward from the strip-shaped through holes 37 of the upper plate 21d. There is. Also, the paper guide shaft 34
A pair of paper guides 38 for guiding the other end side of the falling paper are fixed to both ends of the paper by split fastening, and strip-shaped through holes 39 of the upper plate 21d are projected upward.

Of the paper guides 36, 38 on both sides, the paper guide 38 on the frame opening side is provided with an interlocking mechanism for raising and lowering the paper guide 38 in conjunction with the elevation of the board 21. That is,
An L-shaped lever 41 is rotatably pivotally attached to the distal end of a lever receiver 40, which has a base end bolted to the bracket 31 and is provided so as to project rearward. A roller 42 is pivotally attached to the end. Further, the other free end of the lever 41 and the link 43 fixedly fixed to the paper guide shaft 34 are connected to each other by a turn bag 44 which is pivotally attached at both ends and is adjustable in expansion and contraction, and the lever 41 and the bracket. 31
A tension spring 45, which urges the lever 41 to rotate in the direction of raising the paper guide 38, is stretched between and. Third
Reference numeral 46 in the drawing denotes a stopper that restricts the standing of the paper guide 38 in the upright position. On the other hand, the stay 4e on the machine frame 4 side
From the above, a roller contact plate 47 is horizontally provided so as to project forward, and its tip end faces directly below the roller 42. With this configuration, when the board assembly 20 descends and the rollers 42 contact the roller contact plate 47, the lever 41 rotates against the tensile force of the tension spring 45, and the paper guide 38 falls down. To do. Further, since the place 42 where the board assembly 20 rises from this state is separated from the roller contact plate 47, the tension spring 45
The lever 41 is rotated by the pulling force of, and the paper guide 38 stands up. It should be noted that the paper guide 38 is set so that its horizontal surface in the lying position is flush with the upper plate 21d and is slightly lower than this. Further, a roller 48 is pivotally attached to the lower end of the paper guide 38, and as shown in the side view of the paper guide in the lying position in FIG.
However, it is configured so that the front end of the stacked paper 49 on the upper plate 21d is lifted to facilitate taking out the paper 49. 50 for board 21
A cover hung from the side plate 21b of the vehicle through a butterfly plate 51 so as to be freely foldable. When the board 21 rises, the cover hangs down and the lower end is adsorbed by the magnet 52 on the machine frame 4 side, as shown in FIG. It is configured to be folded while being in contact with the machine frame 4 when descending 21. 53 and 54 are paper 4 that has been dropped and stacked.
9 is a pair of paper guides located at both ends in the up-and-down direction of the board 21 and erected from both ends of the board 21, and 55 is a paper that is pivotally attached to a horizontal paper contact shaft 56 to align the paper ends of the stacked paper 49. It is a reliance. Further, 56 is a pile controller for controlling the stacking amount of the paper 49.

Next, a paper guide moving device operated according to the paper size will be described. A rectangular support plate 60 is horizontally supported by the four brackets 25 suspended from the back surface of the upper plate 21d, and a bearing 61 formed integrally with the square support plate 60,
A vertical gear shaft 62 is rotatably supported, and the gear shaft 62 is restricted from moving in the axial direction by a handle support plate 63 and a collar 64. On the other hand, the pair of bearing plates 65, which are bolted to the support plate 60 and hang down, have horizontal gear shafts.
A bevel gear 67 and a sprocket 68 regulate the movement of the shaft 66 in the axial direction, and the shaft 66 is rotatably supported. The bevel gear 67 and the bevel gear on the gear shaft 62 mesh with each other, and the sprocket 68 and the sprocket on the screw shaft 28 are engaged.
Chain 71 is stretched between 70 and. 72 in FIG.
Is a lid for opening and closing the opening 21e above the gear device so as to be openable and closable, and is placed on the four brackets 25 so as to be flush with the upper plate 21d. It is configured to open. And the band support plate
On the 63, a handle 74 having a rotatable gripping portion is pivotally mounted by a pin 75 so that the handle 74 can be raised and lowered. After opening the lid 72, the handle 74 is raised and the gear shaft 62 is rotated. Allows the screw shaft 28, through the bevel gears 67, 69 and the chain 71.
30 rotates, the paper guides 38 and 36 move back and forth in opposite directions,
It is configured to correspond to the paper size. Handle 74
When not in use, it is laid down and stored in the board 21 as shown.

The operation of the discharged sheet stacking apparatus configured as described above will be described by taking the sampling operation of the intaglio printing machine as an example. During the printing operation, the printed paper is conveyed by the paper ejection chain and is dropped and stacked on the first paper ejection stacking device (not shown). When the number of sheets stacked on the first discharged sheet stacking device reaches a predetermined number, the sheet discharge cams are switched and the conveyed sheets are dropped and stacked on the second discharged sheet stacking device. Thereafter, the stacked sheets are alternately stacked and the stacked sheets are taken out of the machine while being stacked on the other side, whereby the discharged sheet stacking work is continuously performed.

When sampling is performed during such a paper discharge operation, the paper discharge cam is switched to the sampling side by a push button operation or the like, and the conveyed paper is above the sampling board 21 shown in the drawing and has a nail of the paper discharge chain. It is released from the mouth and falls while being guided by the paper guides 36, 38, 53, 54 and the board 21
It is loaded on the upper plate 21d. When the number of stacked sheets 49 reaches a predetermined number, the sheet discharge cam is switched to the regular sheet discharge stacking device side again, so that the stacked sheets 49 on the upper plate 21d are taken out of the machine.
That is, when the piston rod 15 is retracted from the state shown in FIG. 1 by feeding oil to the hydraulic cylinder 14, the swing drive shaft 11 rotates counterclockwise in FIG. 1, so that the board assembly 20 and the links 17, 18 are rotated. And the four-joint link motion, board assembly 20
Is lowered and, as shown in FIG.
Protruding from the opening. Also, the lowering of the board 21
42 contacts the roller receiving plate 47 to rotate the lever 41 in the clockwise direction in FIG. 4 against the tensile force of the tension spring 45, so that the paper guide shaft 34 is rotated via the turn bag 44 and the lever 43. Then, the paper guide 38 falls to the horizontal position. At this time,
As shown in FIG. 9, the roller 48 lifts the front end of the stack 49. As a result, a gap is formed between the front end of the paper 49 and the upper plate 21d, and a finger is inserted into this gap to grip the paper 49 and take it out of the machine. After taking out hydraulic cylinder 14
When oil is sent to the piston rod 15 and the piston rod 15 is moved forward, the board assembly 20 rises in the reverse operation to the above, the roller 42 separates from the roller receiving plate 47, and the lever 71 is pulled by the tension force of the tension spring 45. Since it rotates counterclockwise, the paper guide 38
Stands up.

If the paper size changes, open the lid 72 and handle
When 74 is erected, and this is gripped and the gear shaft 62 is rotated, the screw shaft 28, via the bevel gears 67, 69 and the chain 71,
30 rotates, and the paper guide 38 and the paper guide 36 move in mutually opposite directions by the screw action of the right screw and the left screw to correspond to the paper size. The handle 74 is accommodated in the board 21 by laying it down and closing the lid 72, so that there is no problem in stacking paper.

In addition, in the present embodiment, the example in which the present invention is applied to the sampling of the intaglio printing machine is shown, but the present invention can also be applied to a paper ejection stacking device for loading regular paper of the intaglio printing machine.
Further, not only the intaglio printing machine but also other sheet-fed printing machines can be implemented in the same manner.

〔The invention's effect〕

As is clear from the above description, according to the present invention,
In a paper discharge stacking device of a sheet-fed printing press, a board assembly including a paper discharge stacking board, a parallel movement mechanism for parallelly moving the board assembly diagonally up and down, front and back, and movement and loading of the parallel movement mechanism. Paper guide In addition to the interlocking mechanism that interlocks with the up and down movement of the paper guide, the base of the paper guide has rollers to lift the edge of the stack of paper when the paper guide falls, so that the paper can be loaded at a high position. Since the sheets are stacked, the drop is small and the paper alignment is good, and since the paper is taken out from the board which is low and protrudes from the frame opening, the position is appropriate and the paper is easily taken out. In addition, when the paper is taken out, the paper guide lays down in a horizontal position and the base roller lifts the paper edge, so you can take out the paper without sliding it against the paper guide while rolling the rollers. The workability is improved, the paper is not soiled or damaged, and the amount of waste paper is reduced.

[Brief description of drawings]

1 to 9 show an example in which the paper discharge stacking apparatus according to the present invention is implemented for sampling of an intaglio printing machine, FIG. 1 is a side view seen from the side opposite to the printing unit, and FIG. 2 is the same. A plan view, FIG. 3 is an enlarged front view as seen from A in FIG. 1, showing a state when the paper is taken out, FIG. 4 is a side view as seen in B of FIG. 3, and FIG. 5 is an enlarged front view as seen in C of FIG. Fig. 6, Fig. 6 is an enlarged front view of Fig. 1 as viewed from D, Fig. 7 is an enlarged front view of E as shown in Fig. 1, Fig. 8 is an enlarged cross-sectional view of FF as shown in Fig. 2, and Fig. 9 is in a lying state. It is a side view of the paper guide shown. 11 …… Swivel drive shaft, 14 …… Hydraulic cylinder, 16 …… Lever, 17,18 …… Link, 20 …… Board assembly, 21 …… Board, 34 …… Paper guide shaft, 38 …… Paper guide, 41,43 ……
Lever, 42 …… Roller, 45 …… Tension spring, 47 …… Roller support plate, 48 …… Roller, 49 …… Loaded paper.

Claims (1)

[Claims] 1. A board assembly provided with a paper discharge stacking board, a parallel movement mechanism for moving the board assembly in parallel in the up-down and front-rear directions, and movement of the parallel movement mechanism and upstanding of a paper-sheet guide sheet guide. A sheet provided with an interlocking mechanism for interlocking with a fall motion and a rotatable roller pivotally attached to the base of the paper guide to lift the front end of the stacked paper when the paper guide falls. Paper stacker for leaf printing machines.