JPS6341359A - Plate taking-out plate inserting device for sheet printing machine - Google Patents

Abstract

PURPOSE:To reduce the generation of loss paper by the automatic insertion of a plate taking- out plate by setting a plate loading base into the horizontal attitude by the detection signal of the paper loading quantity and catching the top edge of the plate taking-out plate and inserting said top edge into a guide rail and returning the paper loading base to the vertical attitude by the detection signal for the insertion edge limit. CONSTITUTION:When the piled paper quantity reaches a prescribed quantity, a paper loading base 5 is slightly lowered by opening and closing a solenoid valve, and a guide rail 6 is closed, and a plate loading base 18 is turned to the horizontal attitude, and a limit switch 22 is operated to open and close the solenoid valve, and an air cylinder 20 is brought into stop, and a motor 15 is revolved by the signal of a timing detecting device. Then, the lower part rollers 24 are revolved by the revolution of the motor 15, and a plate taking-out plate 8A is sent into the guide rail 6, and the plate 8A is collided with a shock absorber 30 at a high speed, and shock is lightened. After the stop, the return is regulated by a stopper 31, and when the plate 8A is brought into stop, the contact point of a switch 28 is closed to stop the motor 15, and the plate loading base 18 is restored to the vertical attitude by the operation of the cylinder 20. Thus, the quantity of generating loss paper can be reduced by the automatic insertion of the plate taking-out plate.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a plate that is installed in a paper discharge device of a sheet-fed printing press and that takes out a predetermined number of sheets of paper stacked on a paper stack without stopping the machine. The present invention relates to a board inserting device for a sheet-fed printing press that inserts a board into a falling path of discharged paper along left and right guide rails during a pick-up operation.

[Conventional technology]

In printing operations using sheet-fed printing machines, in order to prevent set-off, etc., after printing, the paper stacked on the paper stacking table of the paper delivery device is removed every time the paper reaches a predetermined iK without stopping the machine. It is done.

FIG. 3 is a front view of a paper discharge device equipped with a board removal device for performing this type of board removal work. This will be explained based on this figure. A plurality of claw rods 3 are arranged on the paper chain 2 at predetermined intervals, and a plurality of claws 4 are arranged in parallel on each claw rod 3.

Below the running end of the paper delivery chain 2, a paper stack 5 is provided so as to be able to rise and fall freely, and above it is a pair of nine board guides that are moved horizontally by a drive device as shown by solid lines and chain lines in the figure. 6 has been constructed.

Then, the paper 7 that has been conveyed while being held in the claw 4 by the running of the paper delivery chain 2 is released from the grip and is dropped and stacked onto the paper stacking table 5, and the paper stacking table 5 is automatically lowered as the paper is loaded. do. When a predetermined number of sheets of paper 7 have been loaded, the paper stacking table 5 is lowered slightly, and the boarding υ guide 6, which was located at the chain line position during printing, is moved to the solid line position, and a separately prepared boarding board 8 is used for boarding. When the paper 7 is inserted along the groove of the guide 6, the falling paper 7 is stacked on the board 8, so place the crossbar 9'Jt on the board 8 loaded with the paper that was lowered earlier, and move the paper 7 onto the board 8. 5, the tentative receiver is raised until the horizontal bar 9 comes into contact with the boarding board 8 inside, and then the boarding guide 6 is opened to the chain line position and printing work is resumed. By performing such slope removal work, no great pressure is applied to the underlying paper, thereby preventing set-off.

[Problem that the invention seeks to solve]

However, in such a conventional board cutting device, there was a problem in inserting the board board 8 into the guide rail 6. In other words, it is extremely difficult to quickly insert the cutting board between the sheets of paper 7 that are released from the grip of the claws 4 and are falling one after another at high speed, and the paper 7 is often caught by the boarding board 8, resulting in paper waste. However, in extreme cases, K had to completely stop the machine. Also, when printing on thick paper, increasing the printing speed to a total of 13,000 times/hour increases the number of board cuts, which cannot be done while doing other work, so it is necessary to have a worker who specializes in board cutting, or to increase the printing speed. Since it has to be dropped at a rate of 500 to 9000 times/hour, there is a problem in that labor saving and speeding up are hindered.

[Means for solving the gap]

In order to solve such problems, the present invention uses a guide rail to hold the board 9 before insertion and rotate the board mounting table between a substantially vertical position and a horizontal position based on a detection signal of the amount of paper soaked. The insertion drive device is pivoted to the front end of the board, and is activated by the vertical posture detection signal of this board mounting base to capture the tip of the board and insert it into the guide rail, and the insertion drive device that detects the insertion end of the board. and detection means for emitting a signal for returning the board to the vertical position.

[Effect]

When the amount of paper 82 loaded reaches a predetermined amount, the paper stacking platform lowers slightly and the guide rail closes, and the loading amount detection signal drives the paper loading platform 9 to a horizontal position, and then the insertion drive starts. The device captures the tip of the υ board and inserts it into the guide rail, and the detection means detects the insertion end of the board and generates a signal to return the board to the vertical position.

During this time.

Paper continues to fall, and normal paper stacking resumes when the crossbar is placed, the paper stacking platform is raised, and the guide rail is opened.

〔Example〕

1 and 2 show an embodiment of a board inserting device according to the present invention, FIG. 1 being a side view thereof, and FIG. 2 being a front view of the main parts thereof. The entire configuration of the paper ejecting device and the board cutting device has been described based on FIG. 3, so a detailed explanation thereof will be omitted, and the same figure will be used for further explanation when necessary. In the figure, a guide rail 6 that can be opened and closed is supported below the conveyance end of the paper ejection chain 2 as shown in FIG. is the lifting chain 11t for the paper stacking table 5 - the winding and unwinding chain 4 ((i
! i! A sprocket 12 (the rear one is not shown) is provided. Reference numeral 13 denotes a pair of left and right brackets formed in an inverted shape and fixedly suspended from the left and right side frames 1, and a support shaft 14 is rotatably mounted between the lower ends of the brackets. A motor 15 is mounted on the bracket 13 on the left side when facing, and a gear 16 on the motor shaft.

It meshes with the gear 1T on the support shaft 14. 18 is a pair of left and right vertical members 18a and horizontal members 18b made of 5-shaped steel.
It is a board mounting stand formed into a frame in the shape of a letter.Boss 18c at the upper left and right ends.F: It is rotatably fitted to the support shaft 14 to restrict movement in the axial direction.This board mounting stand is 9°. 1 for 18
A cutting board 8A prepared for the next cutting is held. An air cylinder 20 connected to an air source (not shown) via a solenoid valve is pivotally supported and suspended from a support plate 19 located above the bracket 13 and protruding from the left and right side frames 1. The working end of the piston rod 21 is pivotally connected to a metal fitting 18d at the upper end of the plate holder 18. Then, the electromagnetic valve detects that the amount of paper stacked on the previous board 8 has reached a predetermined amount, and in response to a signal issued, it switches to the shear cylinder 20 side, moves the piston rod 21 backward, and moves the board mounting base 18. It is configured to be rotated from the substantially vertical position shown in the figure to a horizontal position. To stop the board mounting base 18 in the horizontal position, the board mounting board 8A is stopped by the limit switch 2.
2 and stops the piston rod 21 via a solenoid valve. Note that the return of the board platform 18 to the vertical position will be described later. Reference numeral 23 denotes an insertion drive device which includes the motor 15 and gears 16 and 17 as some of its constituent members, and is equipped with a pair of lower rollers 24 fitted and fixed to both ends of the support shaft 14. A pair of upper rollers 25 are disposed above the rollers 24 so as to be rotatably connected to a support pin 26 fixed to the bracket 13 . An S compression coil spring 27 is interposed between the stepped portion of the support pin 26 and the bracket 18, and urges the roller 25 completely downward, and its lower limit is regulated by the support pin 28. At this lower limit, a slight gap smaller than the thickness of the cut root 8A is formed between the upper and lower corners 25 and 24, and a slight continuous force is accumulated in the compression coil spring 27. When the board mount 18 rotates to the horizontal position, at the end of the rotation, the board 8A pushes into the space between the upper and lower rollers 25 and 24, as shown by the chain line in FIG. It is configured to push up against the elastic force of 27. Said motor 1
Is 5 the timing detection device on this machine side? tK is connected,
Simultaneously with the stop of the air cylinder 20, this timing control device is activated and the signal generated causes the motor 15 to rotate, the lower roller 24 rotates, and the temporary plate 8A, which is strongly held between this and the upper roller 25, is guided. It is configured to be inserted into the rail 6. In the figure, there is a cutout plate 8 on the guide rail 6, but there is no cutout plate 8 when inserting the cutout plate 8A. A limit switch 29 is provided at the insertion end of the board 8A to close the contact at the insertion end and issue a signal.When the signal is received, the motor 15 is stopped and the air cylinder 20 is activated to remove the board. The platform 18 is configured to return to a vertical position.
is a plank plate 8A approaching at a speed of about 3m/sea.
It is a shock absorber that relieves the shock of zero, and also 3
Reference numeral 1 denotes a stopper which is biased with rotational force by a spring member and prevents the cutout plate 8A from returning.

Third operation of the cutting board insertion device configured as above.
This will be explained using all the figures. The next boarding board 8A" (is held and prepared on the board mounting table 18 in a vertical position, and when the paper stack reaches a predetermined amount by continuing to eject the paper, the paper stacking amount is detected and boarding starts. The solenoid valve that outputs the signal opens and closes, the paper stacking table 5 is slightly lowered, the guide rail 6 is closed, and the air cylinder is activated to rotate the board mounting table 18 to a horizontal position. By the way, the limit switch 22 is activated, the solenoid valve is opened and closed, the air cylinder 2o is stopped, and a signal ((Yoshimotor 15 rotates. When the top roller 8A pushes up the upper roller 25 against the elastic force of the compression coil spring 27, it is firmly clamped by the upper and lower rollers 25 and 24, so when the motor 15 rotates, the gear 16, 17-i, the lower roller 24 rotates and feeds the plate 8A'' (to the guide rail 6).The inserted plate 8A travels at high speed and still contacts the shock absorber 30, reducing the impact. When the plate 8A stops, the contact of the limit switch 29 closes and issues a signal to stop the motor 15, and the air cylinder 2
0 is activated, the board platform 18 returns to the vertical position. While the cutting board 8A is being inserted, the paper 7 continues to fall, and this paper is temporarily stacked onto the cutting board 8A. On the other hand, at the same time as the sheet removal work starts, a buzzer or the like is activated to alert the operator to the paper discharge position and wait. Then, when the temporary stacking on the temporary pick-up 8A is started, horizontal bars are placed at both ends of the descending paper-loaded board 8 until the loaded paper 8 comes into contact with the board-board 8A. After raising the paper stacking table 5, the guide rail 6 is opened and the lifting and lowering of the paper stacking table 5 is switched from manual to automatic mode, thereby completing the board removal work.

In addition, in this embodiment, upper and lower levers 25 and 24 that are driven and rotated by a motor 15 are used as insertion drive devices for temporary board removal.
However, the invention is not limited to this example, and pushing may be performed using a chain drive or a rodless air cylinder, for example.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in a board inserting device for a sheet-fed printing press, the board before insertion is held, and the board is adjusted between a substantially vertical position and a horizontal position based on a detection signal of the paper stack amount. The plate mounting base is pivoted to the front end of the guide rail, which is rotated between the plates, and is actuated by the vertical posture detection signal of this plate mounting base to capture the tip of the board and insert it into the guide rail. By installing an insertion drive device and a detection means that detects the insertion end of the board and issues a signal to return the board to the vertical position, the operator only needs to prepare the next temporary board, and the operator can complete the board removal process. Since the board is automatically and quickly inserted, the amount of paper waste is reduced, labor and mental fatigue are reduced, labor is saved, and no operator skill is required. In addition, there is no need to reduce printing speed, productivity is improved, and production volume is stabilized.

[Brief explanation of the drawing]

1 and 2 show an embodiment of a board inserting device for a sheet-fed printing press according to the present invention, and FIG. 1 is a sectional view thereof, and FIG.
The same figure is a front view of the main parts, and FIG. 3 is a front view of a conventional paper ejecting device equipped with a paper cutting device. 6...Guide rail, 7...Paper, 8°8A...
・・Plate board, 14・・・Spindle, 15 *++** motor, 16.17---Gear, 18・・Plate stand,
20...Air cylinder, 22.29...Limit switch, 24--Fist/lower roller, 2511...Upper roller. Figure 3

Claims (1)

[Claims] In a board inserting device for a sheet-fed printing machine that inserts a board into the falling path of discharged paper along the left and right guide rails,
a board holder that holds the board before insertion and is pivoted to the front end of the guide rail and is rotatably driven between a substantially vertical position and a horizontal position in response to a paper stack amount detection signal; an insertion drive device that is activated by a horizontal attitude detection signal of the platform to capture the tip of the board and insert it into the guide rail; and an insertion drive device that detects the insertion end of the board and detects the vertical position of the board. 1. A board insertion device for a sheet-fed printing press, characterized in that it is provided with a detection means for emitting a return signal.