JP3468846B2 - Paper ejection device for printing press - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharged paper aligning device for aligning paper, which is conveyed after printing in a printing machine and is dropped and stacked on a paper stack, in the width direction or the top-bottom direction.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 6 to 8, this type of discharged paper aligning device is provided with a pair of left and right paper discharge frames 1 connected to a frame of a printing unit. A pair of left and right paper discharge chains 3 is stretched around a sprocket 2 and a sprocket of a paper discharge cylinder (not shown) that are mounted between them. A plurality of paper ejecting claw devices 4 including claws and a claw base are juxtaposed on each of a plurality of claw rods supported at regular intervals between the left and right paper discharging chains 3 and in the vicinity of the sprocket 2. Is provided with an opening / closing cam for opening / closing the paper ejection pawl device 4. Reference numeral 5 denotes a paper loading platform for loading paper 6, which is placed on an elevating plate 46 which can be raised and lowered by an elevating chain 7 and is arranged below the horizontal traveling portion of the paper discharging chain 3. The printed paper 6 is gripped and conveyed by the paper ejection pawl device 4 of the paper ejection chain 3 traveling in the direction indicated by arrow A, and the paper ejection pawl device 4 is opened by the cam mechanism in front of the sprocket 2. The paper stacking base 5 is automatically released from the above and is dropped and stacked on the paper stacking base 5, and the paper stacking base 5 is automatically lowered according to the stacking amount. Reference numeral 8 denotes a lower limit detection sensor that detects that the paper stacking table 5 has dropped by a certain amount.

The paper discharge device constructed as described above has a paper pad 9 for abutting the leading ends of the papers 6 dropped and stacked to align the ends in the vertical direction, and a width of the papers 6 dropped and stacked. A lateral aligning device 10 that aligns in the direction is provided. Of these, the side-by-side shifting device 10 is provided with a shift plate 1 in which a notch 12 is formed.
1 and a paper contact bar 13 as a paper alignment auxiliary plate pivotably attached at one end to a shift plate so as to be retractable in the notch 12 and projectable from the notch 12. . As shown in FIG. 8A, the shifting plate 11 is constantly reciprocated in the width direction of the paper by the cam mechanism provided on the frame side, and when the stacking of the paper 6 on the paper stacking base 5 is started, the paper 6 Is oscillated by the shifting plate 11 and the paper contact bar 13 which reciprocate while being attached to the edge in the width direction, and the paper ends are aligned. Paper bar 13
When the paper stacking table 5 is located at a height t2 where it comes into contact with the paper contact bar 13 lowered downward as shown in FIG. 7B, it is retracted into the notch 12 as shown by the alternate long and short dash line in FIG. It was carried out manually as described above.

[0004]

However, in the above-described conventional discharged paper aligning apparatus, since the paper contacting bar 13 is manually stored, if it is forgotten to raise it to the retracted position in the notch 12, the displacement plate is moved. The paper contact bar 13 is located below the upper surface of the paper stack 5 at the position 11 indicated by the alternate long and short dash line in FIG.
There was a possibility that 3 might be damaged. Similarly, in order to perform the manual operation, as shown in FIG. 8A, when the paper contact bar 13 is at a height t1 at which the paper contact bar 13 does not contact the paper stack table 5, the paper contact bar 13 is forgotten to be lowered, so that the paper 6 However, there is an inconvenience that the sheets cannot be correctly aligned on the paper stack 5. In addition, even if the manual operation of the paper contact bar 13 is correctly performed, t2 to t1
Until then, there was a problem that the paper could not be properly aligned because there was no means to align the paper.

Therefore, the present invention has been made in view of the above-mentioned conventional inconveniences, and an object of the present invention is to prevent forgetting to raise or lower the sheet alignment assisting member, thereby preventing damage to the sheet aligning assisting member. Another object of the present invention is to provide a discharged paper aligning device for a printing machine, which can prevent the above-mentioned problems and perform good paper alignment.

[0006]

In order to achieve this object, a discharged paper aligning apparatus for a printing machine according to the present invention is a paper stacking platform for stacking discharged paper and driving it up and down, and this paper. Discharge of a printing machine provided with a paper aligning plate for aligning the paper discharged on the stack by reciprocating motion, and a paper aligning auxiliary plate movably supported by the paper aligning plate between a retracted position and a protruding position. The paper aligning apparatus is provided with a detecting means for detecting a time when the paper aligning auxiliary plate should be moved, and a moving means for moving the paper aligning auxiliary plate to a retreat position where the paper aligning auxiliary plate does not come into contact with the paper stacking table. It is a thing. Further, the discharged paper aligning device of the printing machine according to the present invention includes a paper aligning plate provided with a flexible paper aligning auxiliary member interposed between the paper aligning plate and the paper stacking table. In addition, the discharged paper alignment device of the printing machine according to the present invention is
When the paper alignment plate is close to the paper stack, the paper
The alignment assisting plate is positioned at the retracted position. Also, the present invention
In the discharged paper aligning device of the printing machine according to the above, the paper stacking table is intermittent.
And count the number of intermittent lowering of this paper platform,
It is positioned at the retracted position by counting the number of
Position the paper alignment support plate at the protruding position. Also,
In the paper discharge aligning device of the printing machine according to Ming
It is equipped with a sensor that detects when the
When the paper stacking table is detected by the
Position the auxiliary plate in the retracted position. Also, printing according to the present invention
The ejected paper alignment device of the machine
Evacuation based on the signal from the counter that counts the paper
Position the above-mentioned paper alignment auxiliary plate at the projecting position.
Put

[0007]

According to the present invention, when the paper stack lowers to a certain position, the detecting means detects it and the moving means moves the paper aligning auxiliary plate from the retracted position of the paper aligning plate to the projecting position. When the paper stacking table is lowered to the lower limit, the detecting means detects it and the moving means moves the paper alignment auxiliary plate from the projecting position to the retracted position of the paper aligning plate.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. 1A and 1B show a discharged paper aligning device of a printing machine according to the present invention, FIG. 1A is a side view, FIG. 1B is a sectional view taken along line Ib-Ib of FIG. 1A, and FIG. ) IIa arrow view, FIG. 2 (b)
1A is a cross-sectional view taken along the line IIb-IIb in FIG. 1A, FIG. 3 is an enlarged view of an essential part showing a discharge pile height detection sensor of a discharge sheet aligning device of a printing machine according to the present invention, and FIG. 4 is the same block diagram. Is. In these figures, 21 is an air cylinder, and a piston rod 22 is pivotally mounted at one end to a support plate 20 bolted to a draw plate 11 by a pin 24 and is movable at the other end.
Is provided with a piston head 23. 25 is a rod, one end of which is connected to the piston head 23 by a pin 26, and is provided with a pair of long grooves 27. In this long groove 27, a pin 29 planted at one end of a lever 28 is fitted so that the lever 28 and It is connected to the rod 25.

The other end of the lever 28 is fixed to one end of a pin 30 rotatably supported by a support plate 31 fixed to the end of the notch 12 of the shifting plate 11, and the other end of the pin 30 has a paper One end of the contact bar 13 is fixed, and the paper contact bar 13 has the pin 3
It is rotatably supported about 0 and is movable between a position retracted in the notch 12 and a position protruding from the notch 12. Reference numeral 33 is a brush which is attached to the front and rear ends of the shifting plate 11 via the holders 34 so as to be inclined with respect to the shifting plate 11, and one side surface portion 33a is vertically machined. Reference numeral 35 is a support shaft and a holder plate 36, and
It is detachably attached to 1.

Denoted at 37 is a paper discharge pile height detection sensor attached to the paper pad 9, which outputs a signal to the control device 40 when the stacked paper 6 is detected so that the paper stacking table 5 descends by a certain amount. The pile lifting motor 41 is operated. At the same time, the signal from the discharge pile height detection sensor 37 is output to the counter 39. The counter 39 counts the number of detections of the discharge pile height detection sensor 37. When the preset number of times is counted, a signal is output to the control device 40 to move the piston rod 22 of the air cylinder 21 back and forth. The solenoid valve 42 to be moved is switched. When the paper tray 5 is lowered to the lower limit, it is detected by the discharge pile lower limit sensor 8 and the control device 4
A signal is output to 0 and the solenoid valve 42 is switched again.

Next, the operation of the discharged paper aligning device of the printing machine thus configured will be described. First, the paper 6 is placed on the paper loading platform 5.
When the discharge of the sheet is started, the lower end of the shifting plate 11 and the upper end of the paper stack 5 are close to each other.
As shown by the chain double-dashed line in (a), the paper contact bar 13 is retracted in the notch 12. Therefore, since the aligning plate 11 aligns the papers 6, the paper contact bar 13 does not contact the paper stacking table 5 even when the papers 6 reciprocate in the width direction of the papers.
3 is not damaged. At this point,
As shown in (a), the vertical side surfaces 33 a of the brush 33 as an auxiliary member of the shifting plate 11 abut on both side edges of the paper 6 to align the width direction of the paper 6. At this time, the tip of the vertical side surface portion 33a of the brush 33 comes into contact with the paper tray 5, but since the brush 33 is formed of a flexible member, it is not damaged.

When the stacking of the paper 6 on the paper stacking base 5 progresses, and the paper stacking base 5 is intermittently lowered by the detection by the discharge pile height detection sensor 37, and is intermittently lowered a predetermined number of times, the counter 44
Counts a preset number of times and outputs a signal to the control device 40 to switch the solenoid valve 42. This solenoid valve 4
Piston rod 22 of air cylinder 21 by switching 2
Moves forward to rotate the pin 30 counterclockwise in FIG. 1A via the rod 25 and the lever 28, whereby the paper contact bar 13 rotates counterclockwise about the pin 30. The paper contact bar 13 is projected from inside the notch 12 as shown by the solid line in the figure. At this point, the gap between the lower end of the shifting plate 11 and the upper end of the paper stacking table 5 has reached the above-described t1, and the protruding paper contact bar 13 does not contact the paper stacking table 5.

When the stacking of the paper 6 on the paper stack 5 further progresses and the paper stack 5 reaches the lower limit and the discharge pile lower limit sensor 8 detects this, the discharge pile lower limit sensor 8 causes the controller 40
The control device 40 outputs a switching signal to the solenoid valve 42. This switching signal to the solenoid valve 42 causes the piston rod 22 to retract into the air cylinder 21, and the paper contact bar 13 rotates clockwise around the pin 30 via the rod 25 and the lever 28 in FIG. 1A. It moves and retracts in the notch 12. In this state, the pile on which the paper 6 is loaded is replaced with a pile on which no new paper is loaded, and the pile lifting motor 41 is operated to raise the paper loading platform 5 to the upper limit position to prepare for the next paper loading. To do.

FIG. 5 is a block diagram showing a second embodiment of the present invention. In this second embodiment, the counter 4
Reference numeral 4 is for counting the papers 6 discharged onto the paper stacking table 5, and the count value is input to the control device 40. Reference numeral 45 denotes a paper thickness input device for inputting the paper thickness of the discharged paper 6 to the control device 40. By inputting the paper thickness data to the control device 40 in advance, the control device 40 causes the paper stacking table 5 to be loaded. It is calculated how many sheets of paper 6 should be loaded to switch the solenoid valve 42. When the calculated set number of sheets and the count value input by the counter 44 match, a switching signal is input from the control device 40 to the solenoid valve 42, and the air cylinder 21
Is activated, and the paper contact bar 13 projects from the inside of the notch 12.

In this embodiment, the one applied to the lateral aligning device is given, but it goes without saying that it can also be applied to a front pad for aligning paper in the vertical direction.

As the means for detecting the time when the paper contact bar 13 should be moved, other than the method of detecting the number of intermittent operations by utilizing the intermittent lowering of the paper stacking table 5 and the method of counting the number of printed sheets, Needless to say, various design changes such as a method of detecting the position of the sheet stacking table 5 and a method of directly detecting the position of the pile are possible.

Further, although the brush 33 is used to align the paper when the paper contact bar 13 cannot be projected from the notch 12 at the time of starting loading, the invention is not limited to this, and sponge, urethane, or rubber may be used. It is also possible to replace it with a flexible member such as.

[0018]

As described above, according to the present invention, the paper stacking device for stacking discharged paper sheets and driving up and down, and the paper stacking device for aligning the paper discharged on the paper stacking plates by reciprocating motion. In a discharged paper aligning device of a printing machine, which includes a plate and a paper aligning auxiliary plate that is movably supported by the paper aligning plate between a retracted position and a protruding position, the paper aligning auxiliary plate should be moved. Detecting means for detecting the timing and moving means for moving the paper alignment auxiliary plate to the retracted position where it does not contact the paper stacking base by the detecting means are provided, and the paper aligning auxiliary plate is moved by the detecting means. Since the time to be detected is detected and automatically moved between the retracted position and the protruding position, it is possible to prevent the damage of the paper alignment auxiliary plate, and the adjustment work therefor is also unnecessary.

Further, according to the present invention, the paper aligning plate is provided with a flexible paper aligning auxiliary member which is interposed between the paper aligning plate and the paper aligning auxiliary plate. Since the papers are aligned by the members, the papers can be aligned more completely.

[Brief description of drawings]

1A and 1B show a discharged sheet aligning device of a printing machine according to the present invention, FIG. 1A is a side view, and FIG. 1B is a sectional view taken along line Ib-Ib of FIG.

2A is a view taken along the arrow IIa in FIG. 1, and FIG. 2B is a view in FIG.
FIG. 11 is a sectional view taken along line IIb-IIb.

FIG. 3 is an enlarged view of essential parts showing a discharge pile height detection sensor of a discharge paper aligning device of a printing machine according to the present invention.

FIG. 4 is a block diagram of a discharged paper aligning device of a printing machine according to the present invention.

FIG. 5 is a second diagram of the discharged paper aligning device of the printing machine according to the present invention.
2 is a block diagram of an embodiment of FIG.

FIG. 6 is a schematic configuration diagram of a paper output unit of a paper output aligning apparatus of a conventional printing machine.

FIG. 7 is a side view of a lateral aligning device of a discharged paper aligning device of a conventional printing machine.

FIG. 8 is a front view showing an operation of a lateral aligning device of a discharged paper aligning device of a conventional printing machine.

[Explanation of symbols]

5 ... Paper stack, 6 ... Paper, 8 ... Paper discharge lower limit sensor, 11 ... Paper plate, 12 ... Notch, 13 ... Paper contact bar, 21 ... Air cylinder, 33 ... Brush, 37 ... Paper pile height detection Sensor, 39 ... Counter, 40 ... Control device, 41 ... Pile lifting motor, 42 ... Electromagnetic valve, 44 ... Counter, 45 ... Paper thickness input device.

Claims (6)

(57) [Claims] 1. A paper stacking platform for stacking discharged papers and driving up and down, a paper aligning plate for aligning the papers discharged on the paper stacks by reciprocating movement, and a retracting position for the paper aligning plates. In a discharged paper aligning device of a printing machine, which comprises a paper aligning auxiliary plate movably supported between the projecting position and a detecting means for detecting the time when the paper aligning auxiliary plate should move, and this detecting means. Do not contact the paper alignment auxiliary plate with the paper stacker by
An ejected paper aligning device for a printing machine, comprising: a moving means for moving the ejected paper to a retreat position . 2. A paper stacking platform for stacking discharged papers and driving up and down, a paper aligning plate for aligning the papers discharged on the paper stacking reciprocatingly, and a retracting position for the paper aligning plates. In a discharged paper aligning device of a printing machine, which comprises a paper aligning auxiliary plate movably supported between the projecting position and a detecting means for detecting the time when the paper aligning auxiliary plate should move, and this detecting means. Do not contact the paper alignment auxiliary plate with the paper stacker by
And a moving means for moving to a retracted position ,
A discharged paper aligning apparatus for a printing press, wherein the paper aligning plate is provided with a flexible paper aligning auxiliary member interposed between the paper aligning plate and the paper stacking table. 3. A discharged paper aligning device for a printing machine according to claim 1.
In, when the paper alignment plate is close to the paper stack
First, make sure that the paper alignment auxiliary plate is positioned at the retracted position.
And a paper ejection aligning device for a printing machine. 4. A discharged paper aligning device for a printing machine according to claim 1.
At this time, the paper loading platform descends intermittently,
Counting the number of intermittent descents and counting a predetermined number of times
Project the paper alignment auxiliary plate that is positioned at the retracted position more
Paper ejection alignment for printing presses characterized by positioning in position
apparatus. 5. A discharged paper aligning device for a printing machine according to claim 1.
At the step of detecting that the paper loading platform has reached the lower limit,
Sensor is installed to detect the paper stack
Position the paper alignment auxiliary plate at the retracted position.
A paper discharge aligning device for a printing machine, which is characterized in that 6. A discharged paper aligning device for a printing machine according to claim 1.
, The paper thickness data entered in advance and the discharged paper are
Positioned at the retracted position based on the signal of the counting counter
Positioning the scraped paper alignment auxiliary plate at the protruding position
A paper ejection aligning device for a printing press.