JPH0537969Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a sheet-fed printing machine that prints sheets of paper that have already been cut to a predetermined size one by one. The present invention relates to a device that prevents paper from flowing during boarding work in a paper discharge section where sheets are discharged and stacked one by one.

[Conventional technology]

In the paper discharge section of a sheet-fed printing press, the printed books conveyed by the paper discharge chain are deposited on a pile. At this time, in order to prevent set-off, a boarding operation is performed in which slatted boards are inserted at appropriate intervals. I'm going. During this work, the stack of printed books is lowered by a predetermined amount, and then a slatted board is inserted above the piled up printed books at the timing of ejecting the printed books from the paper ejection chain. There is. However, when lowering the pile and subsequently inserting the slatted board, there is a problem in that the printing books that fall from the paper delivery chain and the uppermost part of the printing books that have already been piled up flow down, especially toward the butt end side.

Therefore, in order to prevent this paperback from drifting, a paper presser or a backing plate that is movable toward the end face is installed at a position perpendicularly away from the edge of the booklet, and this paper presser or backing plate is used when removing the paper. A paper flow prevention device has been proposed that is configured to move toward the end face of the printed book and come into contact with the end face to prevent the paper from flowing (for example, Japanese Patent Laid-Open No. 56-145068, Japanese Utility Model Laid-open No. 1983-1983).
171764, JP-A-62-65880, etc.).

[The problem that the idea aims to solve]

However, in the conventional paper flow prevention device, a pair of rails are installed on both sides above the pile where printed books are piled up.
A manual or automatic method in which a guide, etc. is provided, a bar, shaft, etc. holding a paper presser or backing plate is movably held on the rail, guide, etc., and the bar, shaft, etc. is moved along the rail, guide, etc. The problem was that the mechanism was complicated and required a considerable amount of space.

The present invention was devised in view of these conventional problems, and it is an object of the present invention to provide a paper flow prevention device that is small in size and has a simple structure.

[Means to solve the problem]

The present invention, which has been devised to achieve the above object, comprises a slide rail that is disposed on the side of the end surface of the print books stacked on the pile of the paper discharge section and is extendable and retractable in a direction parallel to the end surface of the print book; A paper presser plate is rotatably held at the tip of the rail, and the slide rail is arranged parallel to the slide rail, and the paper presser plate at the tip moves the slide rail to an operating position where the paper presser plate at the tip regulates the end surface of the print book and laterally away from the print book. The object of the present invention is to provide a paper flow prevention device for a paper discharge section of a sheet-fed printing press, which is characterized by having a telescoping cylinder that extends and retracts to a standby position.

〔Example〕

Embodiments of the present invention shown in the drawings will be described below.

FIG. 1 is a side view showing a paper discharge section of a sheet-fed printing machine, in which 1 is a paper discharge chain, 2 is a paper discharge claw attached to the paper discharge chain 1, and holds and conveys a printed book 3;
5 is a paper stopper that regulates the leading edge of the printing book that is removed from the paper ejection claw 2 and falls freely; 5 is a vacuum car that sucks the rear end of the printing book and decelerates it; 6 is a vacuum car member that holds the vacuum car 5; 7 is an elevating pile for stacking the printing books 3 discharged from the paper ejecting chain 1; 8 is a pallet placed on the elevating pile; 9 is a grating board placed at appropriate intervals on the elevating pile 7; 9A; 10 is a support placed between the slatted boards 9 on the lifting pile 7, and 11 is a board insertion guide for guiding both ends of the slatted board when inserting the slatted board 9A.
Since these structures are conventionally known, detailed explanations will be omitted.

The paper flow prevention device according to the embodiment of the present invention has a first
At position A in the figure, it is attached to the vacuum wheel member 6 via a bracket. As shown in FIGS. 2 to 5, this paper flow prevention device 13 is disposed on the side of the end surface 3A of the books 3 stacked on the elevating pile 7 and on the outside of the board insertion guide 11. A slide rail 15 that is extendable and retractable parallel to the book end surface 3A on the butt side, and a pin 1 at the tip of the slide rail 15.
A paper presser plate 16 whose upper end is rotatably held by a paper presser plate 6A is arranged parallel to the slide rail 15, and the slide rail 15 is placed in an operating position where the paper presser plate 16 at the tip restricts the end surface 3A of the printed book. (4th
5) and a telescopic cylinder 17 that extends and retracts to a standby position laterally away from the printing book 3 (FIGS. 2 and 3), and connects the tip of the slide rail 15 and the tip of the piston rod of the telescope cylinder 17. a connecting member 18, and a swing prevention member 19 made of rubber or the like to converge the swing motion of the paper press plate 16 in a short time.
etc. Here, the telescopic cylinder 17 is a cylinder whose cylinder tube is extendable and retractable, and has the advantage that it can take a larger stroke than a normal cylinder, in other words, the device can be made more compact. As the telescopic cylinder 17, for example, a telescope cylinder (trade name) manufactured by NOK Corporation can be used. The strokes of the slide rail 15 and the telescoping cylinder 17 are designed to accommodate up to the minimum size of the printed book 3, and the length of the paper press plate 16 is determined in accordance with the fixed amount of descent of the lifting pile 7 during boarding. . In other words, the paper press plate 1
The length of the booklet 6 is preferably such that the upper part 3B of the book on the pile 7 is slightly covered when the fixed amount of descent is finished. Note that the paper flow prevention device 13 is arranged on both sides of the elevating pile 7, that is, on the operating side and the driving side of the paper ejection section.

Next, the operation of the paper flow prevention device 13 having the above configuration will be explained. During normal book stacking, the telescoping cylinder 17 is retracted and the paper pressing plate 16 is in a standby position, as shown in FIGS. 2 and 3.

When carrying out the board removal work, first, the grating board 9A on which new printed books are to be loaded is set on the board insertion guide 11. The setting of the slatted board 9A is detected by a suitable limit switch or the like (not shown),
The elevating pile 7 starts descending at an appropriate timing, and the paper flow prevention device 13 also starts operating in synchronization with the start of the elevating pile 7's descent. That is, the telescoping cylinder 17 operates to extend the slide rail 15, and as shown in FIGS. 4 and 5, the paper pressing plate 16 is placed in the immediate vicinity of the butt end surface 3A of the stacked books 3. to regulate the end surface of the book on the buttock side. At this time, before the grating board 9 held by the lifting pile 7 is sufficiently lowered, the paper presser plate 16
Even if the paper presser plate 16 moves forward and the lower part of the paper presser plate 16 collides with the grating board 9 on the pile, the paper presser plate 16 will only rotate counterclockwise in FIG. 3 and there will be no problem. After the elevating pile 7 has descended a certain amount, the paper press plate 16 stops in a drooping state as shown in FIG. prevent the flow of For this reason, after the elevating pile 7 starts descending, the falling books flow toward the tail end and slide down from the predetermined paper stacking position, resulting in wasted paper, and the friction of the sliding paper. This simultaneously solves the problem that the upper part of the printed books already stacked at a predetermined position is dragged by the sliding paper and slides down one after another, resulting in a large amount of wasted paper. In addition, if the interval between the slatted boards 9 is small, the paper presser board 1 moved to the operating position
6 remains in an inclined state with its lower end in contact with the upper surface of the grate plate 9, but it is possible to prevent the printing book from flowing without any problem.

After the elevating pile is lowered, the slatted board 9A is pushed along the board insertion guide 11 and inserted into a predetermined position on the elevating pile 7. After that, the telescopic cylinder 17 is automatically retracted by a timer or the like, and the paper presser plate 1 is automatically retracted.
6 is retreated to the standby position shown in FIGS. 2 and 3. Alternatively, this operation may be manually returned by the operator using a separately provided switch. In addition, paper press plate 1
When 6 is retracted, the movement causes the paper presser plate 1 to
6 may oscillate, but since the oscillation prevention member 19 is provided, the oscillation of the paper press plate 16 is stopped in a short time, and as will be described later, when the elevating pile 7 rises, the This prevents it from getting caught on the slatted board 9 held in place.

After retracting the paper press plate 16, the support 10 is supplied between the inserted grid board 9A and the grid board 9 that was already supporting the printed book, the lifting pile 7 is raised, and the upper end of the support support 10 is When it comes into contact with the slatted board 9A, open the board insertion guide 11 and insert the slatted board 9.
A is supported by a support 10. With this, one board cutting operation is completed.

As described above, the paper flow prevention device 13 of the present invention
is placed on the side of the end face of the printed books stacked on the lifting pile 7, so when the paper size is changed, the mounting position of the paper flow prevention device 13 can be adjusted in the vertical direction of the printed books (see Fig. 1). (in the direction of arrow B). However, in this embodiment, since the paper flow prevention device 13 is attached to the vacuum wheel member 6, when the position of the vacuum wheel member 6 is adjusted in accordance with the paper size change, the position of the paper flow prevention device 13 is adjusted at the same time. Therefore, alignment of the paper length prevention device 13 alone is not necessary.

[Effect of idea]

As explained above, the present invention has a configuration in which the paper press plate for regulating the end surface of the printed book is reciprocated between a position laterally away from the end surface of the printed book and a position for regulating the end surface of the printed book. By doing so, it is possible to prevent the flow of printing sheets during board removal work, and to prevent interference with the grating boards and lifting piles during normal stacking of printing sheets. By using a flexible slide rail and a telescopic cylinder, the structure can be simplified and the entire device can be made compact.Furthermore, by making the paper press plate rotatable, it is easy to move the paper press plate forward. Even if it collides with a grating board or a lifting pile, there will be no inconvenience caused by rotation, and it has the advantage that it can be used even when the spacing between grates is small.

[Brief explanation of the drawing]

Fig. 1 is a side view of a paper discharge section of a sheet-fed printing press in which a paper flow prevention device according to an embodiment of the present invention is installed;
3 is a plan view showing the paper flow prevention device in a standby state, FIG. 3 is a side view thereof, FIG. 4 is a plan view showing the paper flow prevention device in an operating state, and FIG. 5 is a side view thereof. 1... Paper discharge chain, 2... Paper discharge claw, 3... Print book, 3A... Print book end surface, 4... Paper support, 5... Vacuum car, 6... Vacuum car member, 7... Lifting pile, 8
...Pallet, 9,9A...Slatted board, 10...
Support column, 11... Board insertion guide, 13... Paper flow prevention device, 14... Frame, 15... Slide rail, 16... Paper press plate, 17... Telescopic cylinder, 18... Connecting member, 19... ...Anti-swing member.

Claims (1)

[Scope of utility model registration request] A slide rail that is arranged on the side of the end surface of the print books stacked on the pile of the paper discharge section and is extendable and retractable in a direction parallel to the end surface of the print book, and a paper press plate that is rotatably held at the tip of the slide rail. and a telescoping cylinder arranged parallel to the slide rail to extend and retract the slide rail between an operating position where a paper press plate at the tip restricts the end surface of the print book and a standby position laterally away from the print book. A paper flow prevention device in the paper discharge section of a sheet-fed printing machine.