JPH0527395Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a board that is installed in the paper discharge device of a sheet-fed printing machine and takes out the paper stacked on the paper stacking table every predetermined number of sheets without stopping the machine. The present invention relates to a paper receiving device for paper removal work that temporarily receives paper that is released from the grip of a paper ejection claw and falls during paper removal work.

[Conventional technology]

In printing operations using a sheet-fed printing press, after printing, the paper stacked on the paper stacking table of the paper output device is removed without stopping the machine, or when a small amount of paper is stacked to prevent set-off. The work of removing boards without stopping the machine is carried out.

This boarding operation involves inserting a board horizontally into the slot of a boarding guide provided in the paper falling path every time a predetermined number of sheets are stacked, and stacking paper on top of the board. This process is repeated to stack the paper in several stages.

However, when inserting the cutting board into the groove of such a boarding guide, the sheets of paper are continuously ejected and falling, so it is extremely difficult to insert the board quickly between the falling papers. It is difficult and often causes the paper to get caught and damage some of the sheets.

Therefore, conventionally, a paper receiving member of some kind that can move horizontally back and forth is provided at a higher position than the cutting board inserted into the boarding guide, and this paper receiving member is quickly moved into the paper falling path before inserting the boarding board. A method is adopted in which the falling paper is temporarily received by the paper receiving member, the board removal guide is moved, the board removal board is inserted, and the paper receiving member is withdrawn.

For example, the paper receiving member used in such work is disclosed in Japanese Patent Application Laid-Open No. 58-10343 and Japanese Patent Publication No.
Some of these are disclosed in Publication No. 58-27188. This is a paper receiving member formed by telescopically fitting and connecting several stages of pipes that gradually become larger in diameter, such as a telescoping antenna, and a plurality of these paper receiving members are arranged in parallel. Pressurized air is supplied to each paper receiving member to cause the paper to protrude into the falling path at high speed,
After use, the paper receiving member is stored by winding up the wire provided through the center of the paper receiving member using a motor.

[Problem that the invention attempts to solve]

However, in such a conventional board-cutting paper receiving device, the diameter of the retractable pipe cannot be made very thin due to its structure, and there is a step at the joint between the pipes, so it is difficult to pull the paper. Not only is it easy to hang paper, but it is not possible to completely eliminate the occurrence of paper waste, and if the diameter is made thinner to prevent paper from getting caught, there is a problem in that the strength decreases, the amount of paper that can be received is limited, and the number of board removals increases. Ta. Furthermore, air leakage, rattling, and clogging with paper particles and dust are likely to occur, and it is difficult to respond to changes in paper size, making it impossible to expect satisfactory functionality.

[Means for solving problems]

In order to solve such problems, in the present invention, drums whose axial directions are perpendicular are pivotally mounted to each of a pair of front and rear supporting members that are arranged in parallel in the vertical direction of paper ejection close to the paper ejection frame. A wound band with both ends fixed to these drums is provided to bias it in the winding direction, and a forward/backward drive means supported by the paper ejection frame and orthogonal thereto is provided to operate the drum. The working end of the body was placed opposite the band.

[Effect]

When a predetermined number of sheets of paper are loaded on the paper stacking table, when the actuating body of the advancing/retracting drive means is advanced, the band-shaped body whose working end is fixed is rewound and bent against the force. Protrudes into the paper's falling path. Since the falling paper is temporarily received by this protruding strip, during this time the stacking table loaded with paper is slightly lowered and the board is inserted downward into the strip, and then the advancing/retracting drive means is operated. When the belt is moved backward, the belt is wound around the drum by the biasing force, and the stacked paper on the belt is transferred onto the cutting board in a straight line. Thereafter, a crossbar is placed on the loaded loading platform and raised, and the cutting board is slightly pushed up to a predetermined position to continue paper ejection.

〔Example〕

1 to 3 show an embodiment of the board cutting work paper receiving device according to the present invention, FIG. 1 is a plan view thereof, FIG. 2 is an enlarged plan view of the main part, and FIG. AA enlarged cross-sectional view of. In the figure, paper ejecting frames 1 are erected in parallel on both sides of the transport end of the paper being transported in the direction shown by arrow B in FIG. A paper stacking table 2 of the discharged paper stacking device shown in FIG. 3 is provided so that it can be raised and lowered automatically or manually. Reference numeral 3 denotes a sheet of paper that has been released from the grip of the claws of the paper ejection chain and has fallen and is stacked on the paper stacking table 2. Inside each left and right frame 1, there is a gearbox 4 and a bracket 5.
are fixed in order from the upstream side of the paper conveyance, and a bearing 6 is fixed to one side of the frame 1 at a position downstream of the bracket 5. Reference numeral 7 denotes a screw shaft supported by the gearbox 4 on one side, the bracket 5, and the bearing 6, and is drivingly connected to the driving side (not shown).
A transmission shaft 10 is pivotally supported and is drivingly connected to the screw shaft 7 by bevel gears 8 and 9. Furthermore, the gearbox 4 and bracket 5 on the other side of the frame 1 have a bevel gear 11 between them and the transmission shaft 10.
A screw shaft 13 connected for driving at 12 is pivotally supported, and the left and right screw shafts 7, 1 are driven by the driving side.
3 are configured to rotate in synchronization.

What is generally designated by the reference numeral 14 is a suction device that suctions parts other than the gripped ends of the conveyed paper 3, and has a bearing 15 screwed onto the threaded portions of the screw shafts 7 and 13, and both ends of the conveyed paper 3 are attached to the bearings 15 screwed to the threaded portions of the screw shafts 7 and 13. It is equipped with an intake pipe 16 fixedly connected to a suction air source (not shown),
Further, a suction axle 17 rotatably driven by a single motor (not shown) is supported by the left and right bearings 15 and connected to the intake pipe 16 by a plurality of arms 18 . A suction wheel 20, which communicates with the inner hole of the intake pipe 16 through a duct 19, is mounted on the suction axle 17 with its peripheral surface exposed from the cover 21.
The suction axle 17 rotates at a circumferential speed that is slower than the conveyance speed of the paper 3, and the numerous suction holes provided on the circumferential surface of the suction wheel 20 are connected to a suction air source.
It is configured so that the paper 3 running in sliding contact with the cover 21 is attracted and decelerated. Then, the suction device 14 is moved in parallel according to the paper size by a screw action due to the synchronized rotation of the screw shafts 7 and 13 described above.

Reference numerals 22A and 22B are two sets of lateral shifting devices having the same configuration and formed symmetrically to each other, and the respective members of these lateral shifting devices 22A and 22B are given the same reference numerals, and hereinafter referred to as one side lateral shifting device 22A. I will only explain about. Further, 23A and 23B are two sets of left and right paper receiving devices having the same configuration and formed symmetrically with each other, and each member of each of these paper receiving devices 23A and 23B is designated by the same reference numeral and hereinafter referred to as one side paper receiving device. Device 23A
I will only explain about. In other words, the side shifting device 2
2A is an arrow C which is pivotally supported by the bracket 5 and is perpendicular to the paper ejection frame 1 by a cam mechanism (not shown).
A lateral shifting shaft 24 that reciprocates in the direction is provided, and a lateral shifting plate 25 formed in a rectangular plate shape is fixed to the protruding end of this lateral shifting shaft 24 via a plate-shaped holder 26. With this configuration, when the side shifting shaft 24 reciprocates, the side shifting plate 25 moves back and forth as shown by solid lines and chain lines in FIG. Arrange. Note that this lateral shifting device 22A is largely moved in the direction of arrow C by a moving mechanism (not shown) to move the paper 3.
It is configured to accommodate the size of

Next, the paper receiving device 23A
5 and a fixed bearing 6, and are arranged in parallel in the vertical direction of the stacked paper 3. Each drum receiver 27a has a drum 27 whose axial direction is vertical. It is pivoted so that it can rotate freely. Reference numeral 28 is a paper receiver as a band-shaped body made of a plate spring material, which is fixed to a drum 27 at both ends and is wound around this drum 27, and is biased in the winding direction by its own spring force. has been done. That is, unless an external force is applied to the paper receiver 28, the spring force applies rotational force to the drum 27, and the paper receiver 28 is tensioned linearly as shown by the solid line in the figure. An air cylinder 29 serving as a forward/backward driving means orthogonal to the paper discharge frame 1 is supported by a rectangular plate via a bracket 31 at a location located between the two drums 27. It is fixed to a holder 32 that can be adjusted forward and backward in the direction of arrow C using a movement adjustment device (not shown), and is configured to be movable in accordance with the paper size. A cap 34 having a groove 34a shown in FIG. The groove 34a is configured to engage with the paper receiver 28 after the paper is inserted. By doing this, when the piston rod 33 moves forward, the paper receiver 28 that engages with the groove 34a of the cap 34 is pushed at its center and bent against the biasing force, as shown by the chain line 28 in the figure, and is bent into a triangular shape. It is configured to curve and protrude into the falling path of the paper 3. Further, when the piston rod 33 retreats from this state, the paper receiver 28 elastically returns to its original state and is wound around the drum 27 while rotating it. As described above, although the bearing 15 moves according to the paper size, the paper receiver 28 expands and contracts while rotating the drum 27, so it does not sag.

Below the paper receiving device configured in this way,
A pair of board guides that can be opened and closed are supported, and in the case of this embodiment, the paper receiving device 23A in FIG.
A cutting device is provided for inserting a cutting board from the outside of the side frame 1 into the groove of the cutting guide.

The operation of the paper ejecting device configured as above will be explained. The paper 3 held by the claws of the printing machine and the paper discharge chain is conveyed by the paper discharge chain while being decelerated by the suction wheel 20, and at the end of the conveyance, it is released from the grip of the claws and falls onto the paper stacking table 2. be done. At this time, since the side shift shaft 24 is reciprocating, the side edges of the stacked sheets 3 are vibrated by the side shift plate 25 and are aligned.

When a predetermined number of sheets of paper 3 are stacked on the paper stacking table 2, the piston rods 33 of the air cylinders 29 on both sides move forward in synchronization, and the groove 34a in the cap 34 attached to the tip is inserted into the center of the paper receiver 28 on both sides. Since the sheet 3 is pushed into the falling path of the paper 3 at high speed, the falling paper 3 is received at both ends in the width direction by the paper receiver 28, and several sheets are stacked. While the paper 3 is being received in this way, close the cutting guide and insert the cutting board into the groove.
When the piston rod 33 of the air cylinder 29 is moved backward, the paper receiver 28 elastically returns to tension in a straight line while rotating the drum 27, and the paper 3 on the paper receiver 28 is transferred to the lower cutting board. Therefore,
When a crossbar is placed on the paper stacking table 2 or a board board loaded with paper and raised, the crossbar comes into contact with the board board above and normal paper ejection continues. In addition, since the piston rod 33 moves forward and backward within the hole 25a of the side latch plate 25, it does not interfere with the reciprocating movement of the latch plate 25.

When the paper size is changed, when the screw shaft 7 is rotated, the left and right screw shafts 7, 13 rotate in synchronization, and the suction wheel 20 moves together with the bearing 15 etc. to correspond to the paper size. . At this time, the drum 27 moves due to the movement of the bearing 15, and the paper receiving device 23A,
23B also corresponds to the paper size. In this case drum 2
7 moves, the paper receiver 28 expands and contracts while rotating the drum 27 by its spring force, so it does not slacken. In addition, for changing the paper size in the width direction, move the air cylinder 29 and side shift shaft 24 to arrow C.
However, at this time, only the angle at which the paper tray 28 protrudes in a triangular shape changes, and there is no problem with the paper tray function.

In this embodiment, the paper receiver 28 made of a plate spring is used as the paper receiving strip, but a spring member may be provided on the drum 27 side to bias the strip in the winding direction. Moreover, a hydraulic cylinder or a solenoid may be provided instead of the air cylinder 29.

[Effect of idea]

As is clear from the above description, according to the present invention, in a sheet-fed printing machine's work paper receiving device, a pair of front and rear support members arranged in parallel in the vertical direction of paper ejection close to the paper ejection frame, Drums with vertical axes are pivotally mounted, and a wound band body is provided with both ends fixed to these drums to urge it in the winding direction, and the belt body is supported on the paper ejection frame side. By providing a forward/backward drive means perpendicular to this and having the operating end of the actuating body facing the strip, the strip serving as a paper receiving member protrudes with a triangular width, thereby preventing the paper from dripping or rubbing. This reduces the amount of waste paper generated, and it also has fewer failures and is highly reliable. In addition, the number of parts is small, the structure is simple, and it can be provided at low cost, and there is no need for adjustment when changing the paper size, improving operability and requiring no hard work for operation.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the board-cutting work sheet receiving device according to the present invention, and FIG. 1 is a plan view thereof, FIG. 2 is an enlarged plan view of the main parts, and FIG. AA enlarged cross-sectional view of. 1...Paper output frame, 2...Paper stacking table, 3...
Paper, 5...Bracket, 6...Bearing, 15...Bearing, 23A, 23B...Paper receiving device, 27...Drum, 27a...Drum holder, 28...Paper holder,
29...Air cylinder, 30...Plate, 33
...Piston rod.

Claims (1)

[Scope of utility model registration request] The left and right paper ejection frames extend parallel to the ejected paper transport direction, the ejected paper stacking device is located between these ejected paper frames, and a cutting board is inserted into the path of paper falling to this ejected paper stacking device. In a sheet-fed printing machine equipped with a board-cutting device that performs board-cutting work, a pair of front and rear support members supported in proximity to the paper discharge frame and arranged in parallel in the vertical direction of the stacked paper, and each of these support members drums whose axes are perpendicular and rotatably mounted on the drums; and a drum having both ends fixed to the drums, wound around the drums, and biased in the winding direction so as to be tensioned approximately parallel to the paper ejection frame. and a forward/backward drive means positioned between the drums, with an operating end of an actuating body facing the belt and supported on the sheet discharge frame side substantially perpendicularly thereto, A board removal device for a sheet-fed printing press, characterized in that a forward/backward drive means is provided for rewinding and bending the band-shaped body against a biasing force by the advancement of the actuating body so as to project into a paper discharge falling path. Work paper receiving device.