JPH0441362A - Blanking plate inserting device and method thereof - Google Patents

Abstract

PURPOSE:To minimize driving force at the time of insertion, prevent blanking plates from interfering with each other and improve the durability of blanking plates themselves by inserting a device in such a way as to insert the uppermost stage blanking plate loaded on an elevation base automatically into a paper discharge part. CONSTITUTION:When an elevation bar 18 ascends and a paper loaded plate 23 in the uppermost state reaches an insert position, an insert position detecting switch is turned on to stop the normal rotation of an elevating motor 22. That is, when the elevation bar 18 ascends until the uppermost stage paper loaded plate 23 reaches the insert position, the ascent of the elevation bar 18 is stopped and the paper loaded plate 23 stands by in the insert position. When the specified number of sheets are counted by a preset counter, paper discharge is switched to the other pile 10, and the normal rotation input terminal of a motor control device is made to a high level. An insert driving motor 33 is thereby rotated normally so that a push piece 36 moves forward through a driving chain 35 to insert the paper loaded plate 23 into the pile 10.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application> The present invention relates to a board insertion method and a board temporary insertion method for inserting a board into a falling path of paper.

<Prior art> In printing operations using a sheet-fed printing press, after printing, it is necessary to take out the paper stacked on the paper stacking table of the paper output device without stopping the machine, or to prevent set-off. Every time a predetermined amount of paper is loaded, a board-cutting operation is performed in which paper is removed without stopping the machine.

In this process, when a predetermined number of sheets of paper are stacked on the automatically lowering paper stacking platform, the paper stacking platform is lowered slightly and then positioned above the stacked papers. A board is inserted, the paper is dropped onto the board, and a predetermined number of sheets of paper are again stacked on the board.

By performing such a board cutting operation, no great pressure is applied to the underlying paper, thereby preventing set-off.

<Problems to be Solved by the Invention> If there is only one paper discharge section, the above-mentioned board removal work needs to be done quickly according to the printing speed. Therefore, the work requires skill, especially when using a printing machine. As speed increases, the work of board cutting has to be done more frequently, which not only increases the physical and mental fatigue of workers, but also the paper that is inserted may catch and damage the paper, so it is important to stop this. The current situation is that the operating speed of the machine is unavoidably lowered only during the blanking process, or the printing speed is lowered from the beginning when printing involves blanking, which hinders the ability to increase the printing speed.

The present invention has been made in view of the above situation, and an object of the present invention is to provide a cutting board insertion device and a cutting board temporary insertion method that can automatically insert a cutting board.

Means for Solving the Problems> To achieve the above object, the board insertion device of the present invention supports a lifting platform on which a plurality of boarding boards are stacked on a frame so as to be movable up and down; When the lifting platform rises to the state where the topmost board of the removed board is located in the board insertion position lid, it moves to the paper discharge section side and moves the top board to the paper discharge section. The present invention is characterized in that the frame is provided with means for inserting a cutout plate into the frame.

In addition, the boarding temporary insertion method of the present invention for solving the above-mentioned problem has a paper releasing means in the fine feed upstream paper discharging section of two paper discharging sections arranged in parallel in the discharging paper conveyance direction. By driving the paper releasing means, the paper ejection position is selectively switched between the upstream paper ejection section and the downstream paper ejection section, and there are two stripping board insertion devices that automatically insert the paper stripping board into the paper discharging section. In sheet-fed printing machines, each of which is provided near the paper ejection section, the drive of the paper release means and the drive of each board inserting device are linked, and the sheet-fed printing machine is installed near the paper ejection section on the side where paper is not ejected. The present invention is characterized in that the cutting board inserting device is driven to alternately insert the cutting boards into paper discharge sections where paper is not being discharged.

<Operation> In the board inserting device having the above configuration, the topmost board of the plurality of board boards is positioned at the board inserting position by raising the lifting platform, and the top board is inserted into the board by the board inserting means. Insert the cutting board into the paper output section. The lifting platform is raised and lowered one by one until the topmost board is positioned at the board inserting position, and the boards are inserted one after the other.

Embodiments FIG. 1 shows a front view of a paper discharge section equipped with a cutting board insertion device according to an embodiment of the present invention, and FIG. 2 shows a schematic plan view thereof.

There is an arrow A in FIG.
A pair of paper ejection chains 3 running in the directions indicated by ) are stretched close to the frame 2, and the paper ejection chains 3 are provided with a plurality of pairs of claws 4 parallel to each other. A pawl 6 for gripping the paper 5 is provided on the pawl 4, and the grip of the paper 5 is released by the paper release cam 7 facing the cam 8 of the paper release mount M9.

Two sets of discharge paper stacking devices (piles) 10 are provided in the conveyance direction of the paper 5.
are arranged side by side, and the bail 10 is provided with a paper stacking table 11 that automatically moves up and down.

A paper release device M9 as a paper release means is provided in the frame 2 corresponding to each bail 10, and a cam 8 is provided in the paper release device 9.
A cylinder 12 is provided which changes the phase of the filter paper 5 to adjust the opposed state of the paper release cam 7 to maintain or release the grip of the filter paper 5 by the claws 6.

In other words, by driving the cylinder 12, while the grip of the paper 5 is maintained on one (for example, upstream) pile 10 side, the grip of the paper 5 is released on the other (for example, downstream) pile 10 side. , the sheets 5 are alternately delivered to two sets of piles 10.

A side part of each pile 10 is provided with a board inserting device 13 that automatically supplies a board to the paper stacking table 11.

The structure of the cutting board insertion device 13 will be explained.

FIG. 3 shows a front view of the lift bar in a raised state, and FIG. 4 shows a view taken along the line ■-■ in FIG.

The frame 14 on the side of the board insertion device 13 is provided with a guide rail 15 extending in the vertical direction.
An elevating plate 17 is supported via guide rollers 16 so as to be movable up and down. A lifting bar 18 extending in a horizontal direction perpendicular to the running direction of the paper 5 is fixed to the lower part of the lifting plate 17.
As the elevating plate 17 moves up and down, the elevating bar 18 moves up and down. In other words, the elevating plate 17 and the elevating bar 18 constitute an elevating platform.

A pair of sprockets 20 are supported on the upper and lower sides of the frame 14, and a chain 21 is attached to the sprocket 20, with one end fixed to the elevating plate 17 and the other end fixed to the lower end of the elevating plate 17.
is wound. The frame 14 is provided with a lifting motor 22, and the driving of the lifting motor 22 rotates a sprocket 20 via a drive sprocket 19. In other words, when the lifting motor 22 is driven, the driving sprocket 19, the sprocket 20 and the chain 21
The elevating bar 18 is raised and lowered together with the elevating plate 17 via the elevating plate 17. Incidentally, when the elevating motor 22 rotates in the normal direction, the elevating bar 18 rises, and when the elevating motor 22 rotates in the reverse direction, the elevating bar 18 descends.

As shown in FIG. 4, the lift bar 18 supports a pawl 24 as a locking pawl that locks onto and holds the paper stack 23 as a laminated board. is fixed in contact with the lift bar 18 in the horizontal state shown in FIG. 4, and is rotatable only in the clockwise direction in the figure.

In other words, when the lift bar 18 is raised, the paper stack 23 is held by the claw 24 without rotating, and when the lift bar 18 is lowered, the paper stack 23 is placed in the lower preparation position. When the robot is on standby, the pawl 24 is rotated by the paper stack 23 to avoid the paper stack 23.

Incidentally, the reference numeral 25 in FIG. 1 is a guide for carrying a large number of paper stacks 23 stacked on a hand lifter (not shown) into the frame 14.

As shown in FIG. 3, a lower limit detection means is provided at the bottom of the frame 14 to detect the lift bar 18 at the position where the claw 24 has avoided the lowest paper stack 23 of the paper stacks 23 in the ready position. A lower end limit switch 26 is attached.

Further, at the top of the frame 14, there is an upper limit switch 27 for detecting the upper limit of the lift bar 18, and the uppermost paper stack 23 held by the lift bar 18 is located at the paper stack insertion position. Insertion position detection switch 2 that detects
8, and the lift bar 18 when the remaining number of paper stacks 23 held by the lift bar 18 reaches a predetermined number (for example, three sheets).
A remaining number detection switch 29 is provided to detect the position of and generate an alarm.

On the other hand, the frame 14 at the paper stack insertion position is provided with a cutout plate insertion means 30 for inserting the uppermost paper stack 23 into the paper discharge device 1 side.

The configuration of the blanking temporary insertion means 30 will be explained based on FIGS. 5 to 7. 5 shows the front view of the upper part of the frame 14 provided with the cutout plate insertion means 30, FIG. 6 shows the view from the ■-■ arrow in FIG. 5, and FIG. It shows the perspective.

As shown in FIG. 5, a second frame 31 is formed on the frame 14 and extends parallel to the lift bar 18, and sprockets 32 are provided at both ends of the second frame. At the upper end of the frame 14 is a push-in drive motor 3.
3 is provided, and a drive chain 35 is wound around the drive sprocket 34 of the insertion drive motor 33 and the sprocket 32. In addition, 40 in the figure is a tension sprocket that adds tension to the drive chain 35.

As shown in FIGS. 6 and 7, a pusher piece 36 is fixed to the drive chain 35, and the pusher piece 36 is moved along the second frame 31 via the wAWb chain 35 by forward and reverse driving of the insertion drive motor 33. It is designed to move back and forth. A front end limit switch 37 for detecting the front end of the push piece 36 is provided at the end of the second frame 31 on the side of the paper ejection device 1 (the left end in FIG. 5). 5
A rear end limit switch 38 for detecting the rear end of the push piece 36 is provided at the right end in the figure. By moving the push piece 36 from the rear end to the front end, the paper stack 23 at the paper stack insertion position is inserted into the paper discharge device 1.

The operation state of the cutting board insertion device 13 having the above structure will be explained based on FIG. 8, and the temporary cutting board insertion method of the present invention will be explained.

FIG. 8 shows a control block of the nine-board insertion device.

Place one paper stack 23 on the paper stack table 11 of each paper discharge device, and place the paper stack 23 on the claw 24 of the lifting bar 18 at the lower end.
3. Stack a large number of 3.

When the printing press is started, the preset counter RRI operates the cylinder 12 of the paper release device 9 every predetermined number of sheets (for example, 500 sheets), changes the phase of the paper release cam 7, and alternately deposits a predetermined number of sheets into the two piles 10. Paper is ejected one by one.

The operation of the lower board inserting device 13 will be explained. Each pile 10 is equipped with the same board inserting device 13, and the operations described below are also performed alternately by the preset counter RRI. That is, the operation of the cutting board insertion device 13 is performed in conjunction with the drive of the paper release device 9.

The lift bar 18 is at the lower end, the push piece 36 is at the backward end, and the lower limit switch 26 and rear limit switch 38 are in the on state (y). In this state, the reset input terminal R of the flip-flop FF4 is set to high level to reset it, and the flip-flop FF4 is reset.
Set the F8 set input terminal S to high level,
The output from the Q terminal becomes high level and activates the timer T4, and after a certain period of time, the output becomes high level and is input to the analog game) Sl. Furthermore, when the rear end limit switch 38 is turned on, the flip-flop FF
The reset input terminal R of the flip-flop FF2 is reset by setting it to a high level, and the set input terminal S of the flip-flop FF2 is set to a high level.The Q terminal output goes to a high level and activates the timer T1. The output becomes high level and passes through G2. When the automatic supply operation button 39 is turned on, the set input terminal S of the flip-flop FF5 is set to a high level, and the reset input terminal R of the flip-flop FF6 is set to a high level to be reset. When the flip-flop FF5 is set, the output passes through the AND gate S1 and when there is an output from the timer T4, the output goes through the AND gate S.
2 and also passes through the OR gate G2 to set the set input terminal S of the flip-flop FF3 to a high level. When flip-flop FF3 is set, its Q
The terminal output becomes high level, the normal rotation input terminal of the motor S control device MD2 is set to high level, and while the normal rotation input terminal is at high level, the lifting motor 22 is rotated in the normal direction and the lifting bar 18 is raised.

When the lift bar 18 rises and the top paper stack 23 reaches the insertion position, the insertion position detection switch 28 is turned on.
The reset input terminal of the flip-flop FF3 is set to high level to reset the flip-flop FF3, and the normal rotation of the lifting motor 22 is stopped.

That is, when the lift bar 18 rises until the uppermost paper stack 23 reaches the insertion position, the lift bar 18 stops rising and the paper stack 23 waits at the insertion position.

On the other hand, when the preset counter RR1 counts a predetermined number of sheets, the paper output is switched to the other pile 10,
The set input terminal S of the flip-flop FF1 is set to high level, and its Q terminal output becomes high level, causing the normal rotation input terminal of the motor control device MDI to become high level. As a result, the insertion drive motor 33 rotates normally, the push piece 36 moves forward via the drive chain 35, and the paper stack 23 is inserted into the pile 10.

In the pile 10 into which the paper stack 23 has been inserted, the paper stack 11 is slightly raised to bring the paper stack 23 into an optimal position for paper discharge.

When the paper stack 23 is inserted into the pile 10, the front end limit switch 37 is turned on, the reset terminal R of the flip-flop FFI is set to high level, and the timer T3 is activated. When the flip-flop FFI is reset, the normal rotation input terminal of the motor control device MDI becomes low level, and the insertion drive motor 33 is stopped. When the timer T3 is activated and a certain period of time has elapsed, its output becomes high level, and the set input terminal S of the flip-flop FF7 is set at a high level. When flip-flop FF7 is set, its Q terminal output becomes high level, and motor 11III! + Set the inverting input terminal of device MDI to high level. The motor control device MDI reverses the insertion drive motor 33 while the inverting input terminal is at a high level. When the insertion drive motor 33 reverses and the push piece 36 reaches the rearward end,
The rear end limit switch 38 is turned on, and the reset input terminal R of the flip-flop FF7 is set to high level to be reset. When the flip-flop FF7 is reset, the inverting input terminal of the motor control device MDI becomes low level, and the insertion drive motor 33 is stopped.

When the push piece 36 retreats and the rear end limit switch 38 is turned on, the forward rotation input terminal of the motor control device MD2 becomes high level through the flip-flop FF2, the timer T1, the OR gate G2, and the flip-flop FF3, and the vertical rotation motor 22 is turned on. rotates normally again and the lift bar 18 rises.

Every time the uppermost paper stack 23 reaches the insertion position, the above-described insertion of the paper stack 23 and raising of the lift bar 18 are repeated to automatically feed the paper stack 23. Since the paper stack 23 is inserted while the paper is being discharged to the other pile 10, the paper is discharged continuously without interruption.

The insertion of the paper stack 23 and the raising of the lift bar 18 are repeated, and when the lift bar 18 rises until only a few sheets remain on the paper stack 23, the remaining number detection switch 29 is turned on and the one-shot y is activated. At the rising edge, only one pulse is outputted through the gate circuit O8, and the set input terminal S of the flip-flop FF6 is set at a high level. When the flip-flop FF6 is set, its Qllll force output level is set to ELEMENT, and the buzzer BZI is immediately activated to issue an alarm and notify the operator that the paper stack 23 needs to be prepared.

During the warning, the operator prepares a new paper stack 23 at the bottom of the lift bar 18, turns on the automatic supply operation button 39, and presses the flip-flop FF6 to 1. Set the t set input terminal to high level. Since flip-flop FF6 has reset priority, its Q terminal output becomes low level and stops the alarm.

When the flip-flop FF6 is set and a new paper stack 23 cannot be prepared due to the worker's circumstances, etc., the timer T2 is activated to output a machine stop signal after a certain period of time (several minutes) and the printing machine is started. make it stop. Therefore, these constitute a stopping means, and if the alarm buzzer BZI sounds and the automatic supply operation button 39 is not turned on for a certain period of time, the machine will stop to avoid trouble with the printing machine.

When the remaining paper stack 23 is inserted, the upper limit position of the lift bar 18 is detected by the upper limit switch 27, and the upper limit switch 27 is turned on. , when the upper limit switch 27 is turned on, the set input terminal S of the flip-flop FF4 is set to high level, and its Q
The terminal output becomes high level, and the inverting input terminal of motor control device MD2 becomes high level. Motor control device MD
2 reverses the lifting motor 22 while the inverting input terminal is at a high level, and when the lifting bar 18 reaches its lowering limit due to the reversal of the lifting motor 22, the lower end limit switch 26 is turned on, and the reset input terminal S of the flip-flop FF4 is turned on.
Set to high level and reset. flip flop F
When F4 is reset, the inverting input terminal of motor control device MD2 becomes low level, and the lifting motor 22 is stopped. At the same time, when the lower end limit switch 26 is turned on, the set input terminal S of the flip-flop FF8 is brought to a high level and set. At this time, if the alarm buzzer BZI has been canceled by the worker (a new paper stack 23 has been prepared), the set signal for flip-flop FF5 has been input to AND gate S1, so timer T
4 is activated and a certain period of time has elapsed, the lifting motor 22 rotates in the normal direction to raise the paper stack board 23 again and repeat the paper stack temporary insertion operation.

When the lifting bar 18 is lowered, the pawl 24 is rotated by the newly prepared paper stack 23 and passes through the paper stack 23 without any problem, so that the pawl 24 cannot prevent the lifting bar 18 from lowering.

The above-mentioned board inserting device 13 is provided in each pile 10, and the sheet discharge is alternately switched to the pile 10 on the side where the automatic supply of the paper stack 23 has been completed, and the sheet discharge is alternately switched to the pile 10 on the side where the sheet is not discharged. Paper stacking boards 23 are sequentially inserted into the paper stacks 23 in preparation for paper ejection. The above operations are repeated and printing continues.
The discharged printing paper is carried out by a transport device (not shown) without interrupting printing.

According to the above-described board inserting device and board pushing method, a plurality of paper stacks 23 can be automatically inserted into the pile 10 in succession by operating the automatic supply operation button 39. Since a warning is issued when the number of paper stacks 23 becomes low, the operator can concentrate on other tasks (monitoring the printing press, etc.) until the warning is issued. Furthermore, if the paper stack 23 cannot be prepared within a certain period of time after an alarm is issued, the printing press will stop, thereby preventing any trouble from occurring.

In addition, the above-mentioned board insertion device 13 automatically inserts the uppermost paper stack 23 of the stacked paper stacks 23 using the push piece 36, so the driving force at the time of insertion is small. There is no interference between the paper stacks 23, and the durability of the paper stacks 23 itself is improved.

Moreover, according to the above-mentioned board removal temporary insertion method, the paper stack 23
can be automatically inserted alternately into two sets of piles 10, and while paper is being discharged from one pile 10, the paper stack 23 is inserted into the other pile 10, and this is alternately switched.
Paper can be continuously discharged without reducing the operating speed, and since the paper stack 23 is inserted when paper is not being discharged, the paper stack 23 does not damage the printed paper.

<Effects of the Invention> The board inserting device of the present invention automatically inserts the top board loaded on the lifting platform into the paper discharge section, so that when inserting the board inserting means, Only a small driving force is required, and there is no interference between the cut-out boards, which improves the durability of the cut-out boards.

In addition, the temporary board insertion method of the present invention enables the board removal board to be automatically inserted into two paper ejection sections alternately, and while paper is being ejected at one paper ejection section, the board is inserted into the other paper ejection section. Since the pick-up plate is inserted and switched alternately in conjunction with the drive of the paper release means, there is no need to reduce the operating speed. Since it is inserted when the paper is not in use, the paper will not be damaged by the cutting board.

As a result, the labor of the operator can be reduced and paper waste can be prevented, and there is no possibility of hindering the speeding up of printing work.

[Brief explanation of the drawing]

FIG. 1 is a front view of a paper discharge unit equipped with a board inserting device according to an embodiment of the present invention, FIG. 2 is a schematic plan view thereof, and FIG. 3 is a board with the board in a state where the lift bar is raised. The front view of the insertion device, FIG. 4, is IV-? in FIG. 3. Figure 5 is a front view of the Itadori feed plate insertion means, Figure 6 is a view from ■-■ in Figure 5.
7 is a view taken along the line arrow in FIG. 5, and FIG. 8 is a control block diagram of the cutting board insertion device. In the drawing, 1 is a paper discharge device, 10 is a paper stacking device (pile), 13 is a board insertion device, 14 is a frame, 18 is a lifting bar 22 is a lifting motor, 23 is a paper stack, and 24 is a claw. , 26 is a lower end limit switch, 7 is an upper limit switch, 8 is an insertion position detection switch, 9 is a remaining sheet number detection switch, 0 is a cutting board insertion means, 3 is an insertion drive motor, 5 is a drive chain, 6 is a push piece , 7 is a front end limit switch, 8 is a rear end limit switch, and 9 is an automatic supply operation button.

Claims (2)

[Claims] (1) A lifting platform on which multiple planks are loaded is supported on a frame so that it can be raised and lowered, and the topmost plank of the planks loaded on the platform is positioned at the plank board insertion position. A board inserting device characterized in that the frame is provided with a board inserting means for moving toward the paper discharge section and inserting the uppermost board into the paper discharge section when the lifting platform is raised. (2) By driving the paper releasing means of the paper discharging section on the upstream side of the transport out of the two paper discharging sections arranged in parallel in the paper discharging direction, the paper discharging position is changed to the upstream paper discharging section. In a sheet-fed printing machine, the sheet-fed printing machine is equipped with a stripping board insertion device that automatically inserts the stripping board into the paper discharging section in the vicinity of two paper discharging sections. The drive of the paper release means and the drive of each board insertion device are interlocked, and the board insertion device provided in the paper discharge section on the side where paper is not being discharged is driven to check whether paper is not being discharged. A method for inserting a strip board into a paper ejection section, the method comprising inserting the strips alternately into a paper discharge section.