JPH07257761A - Paper feeder with nonstop device for sheet printing machine - Google Patents

Abstract

PURPOSE:To improve the accuracy of a paper feeder by easily inserting a fork to accurately join upper and lower loaded paper sheets. CONSTITUTION:Upper loaded paper sheets (b) are supported on an auxiliary pile elevating device 8, and lower loaded paper sheets (a) are supported on a main pile elevating device 2. The lower face of the upper loaded paper sheets (b) is attached to an arm 22 and supported on the broaches 12a to 12h of a fork 25 being laterally movable, and the upper loaded paper sheets (b) are fed from a separater 13 one by one, and when they becomes few, the lower loaded paper sheets (a) are raised by the main pile elevating device 2 to come into contact with the lower face of the broach 12 for the upper loaded paper sheets (b), and the paper sheets (a) and (b) are brought into contact with each other by drawing out the broach 12 to the left, and paper feed is thereby continued. When the lower loaded paper sheets (a) are raised, a position P is measured by a potentiometer A, and the initial position Q of the upside of the paper sheets is measured by a potentiometer B, and since the ascent of the main elevating device 2 is stopped at a position before coming into contact with the broach 12 by a potentiometer D, paper sheets (a), (b) can be accurately joined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeder with a non-stop device for a sheet-fed printing machine, and more particularly to a sheet feeder for accurately stacking vertically stacked sheets.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of a conventional sheet feeding machine with a non-stop device. In the figure, the lower stacked paper a placed on the pallet 5 is a pair of frames 1a and 1b of the paper feeder.
An automatic pallet carry-in device (not shown) on the main pile hoisting bars 4a and 4b suspended on the main pile lifting chains 3a and 3b which vertically reciprocate by the main pile lifting device 2 installed in Will be carried in. On the other hand, the upper stacking paper b, which is fed while being separated from the top by the separator 13 one by one, is reciprocated in the vertical direction by the auxiliary pile lifting device 8 having the same structure as the main pile lifting device 2. It is placed on a plurality of skewers 12a to 12h of the non-stop device 11 supported by the auxiliary pile cross bars 10a and 10b suspended on the auxiliary pile lifting chains 9a and 9b.

Therefore, in order to superimpose the upper stacked paper b on the lower stacked paper a, the main pile hoisting chains 3a and 3b are lifted by the motor 7 with a brake which moves up and down via the sprockets 6a and 6b, respectively. , Chains 3a and 3b
The upper surface of the lower stacked paper a on the pallet 5 rising together with the skewer 1
When contacting the lower surface of 2a, the main pile lifting device 2 stops according to the motor 7. After the stop, the skewers 12a to 12h sandwiched between the upper and lower stacked sheets b and a are pulled out.

Next, as shown in the enlarged view of the Y portion of FIG. 6,
The sensor 16 fixedly mounted on the auxiliary pile cross bar 10a is turned "ON" by the cross bars 10a and 10b supporting the skewer 12a on which the upper stack paper b is placed.
While the paper is being fed while b is rising, it remains in the "ON" state.

In this state, when the lower stacking paper a rises and the upper surface of the lower stacking paper a contacts the lower surfaces of the skewers 12a to 12h, Y
As shown in FIG. 8 of the enlarged view of the part, the lower stacked paper a is skewers 12a to 12a.
Push up 2h, skewer 12a moves away from sensor 16 and "OF
F ”. By this "OFF" signal, the rotation of the motor 7 is stopped and at the same time, the brake is applied to stop the rise of the lower stacked paper a.

The skewer 12 shown in FIG. 2 is shown as a manual feeder in order to prevent the figures from overlapping and making it difficult to see. However, in the non-stop device 11, these skewers 12a to 12h are not shown. Fork (comb) with connecting member 26
The forks are mechanically connected and disconnected.

As described above, the pallet 5 in which the lower stacking paper a is placed on the main pile lifting device 2 by the automatic pallet loading device.
When carrying in, the groove 5a of the pallet 5 to be carried in from the automatic pallet carrying-in device is aligned with a predetermined installation position in the left-right direction of the fork 25 as shown in FIG. The fork 25 is connected to the connecting member 26 as shown.
Are connected by. Therefore, the position of either the left or right side of the lower stacked paper a is measured by the automatic pallet carry-in device by an ultrasonic detector or the like (not shown) provided in the carry-in device, and the pallet 5 is moved left and right.

Further, while the top stacking paper b is being intermittently raised by the paper feeding, the side surface wavy in the vertical direction due to the paper stacking failure is detected, and the detection is made to return it to a fixed position in the left and right direction. A device (not shown) moves the pallet 5 to the left or right, detects the amount of movement of the pallet 5, and moves the fork 25 in the left-right direction from the installation position of the fork by this amount of movement. It is moved by the device.

FIG. 10 is a side view showing a sheet feeding machine with a non-stop device of this sheet-fed printing press. A non-stop device 11 is installed adjacent to the upstream side of the paper feeder, and the non-stop device 11 is a frame 1 of the paper feeder.
columns a and 21 mounted on a and 1b, respectively
b, an arm 22 that moves up and down along the columns 21a and 21b
a, 22b, provided on each of the columns 21a, 21b, and capable of moving in the front-rear direction (arrow X direction) by the arm lifting devices 23a, 23b and the arms 22a, 22b that reciprocate the arms 22a, 22b in the vertical direction. Fork carriers 24a, 24b and fork carrier 2 provided
4 includes a fork 25 provided so as to be movable in the front-rear direction and the left-right direction (arrow X and Y directions).

As shown in FIG. 9, the fork 25 has skewers 12a to 12h connected by a connecting member 26, and the arm elevating devices 23a and 23b and the fork carriers 24a and 24b are not shown in the drawing. Left and right)
It is connected by a connecting shaft and moves cyclically. Actuators for the arm lifting devices 23a and 23b, such as the drive motor 2
7 is attached to the column 21b. A motor 28 (or a long stroke air cylinder (not shown)) that moves the fork carriers 24a and 24b in the front-rear direction is attached to the arm 22b. A motor 29 for moving the fork 25 in the front-rear direction and the left-right direction is attached to the fork carrier 24b, and the motor 30 is fixed to a pin of a chain 31 driven by the motor 29 for moving the fork 25 in the fork carrier 24 in the front-rear direction. Attached to the block 32.

The pallet 5 on which the lower stacked sheets a are placed is carried into the main pile lifting / lowering device 2 of the above-described paper feeder with non-stop device by an automatic pallet carrying-in device (not shown), and the auxiliary pile lifting / lowering device. Reference numeral 8 supports an upper stacked paper b placed on a fork 25 of the non-stop device 11 inserted in the groove 5a of the pallet 5.

Next, the stacked sheets a are separated by the separator 13 of the sheet feeder.
Alternatively, a method of performing continuous paper feeding while separating the paper on the upper surface of b will be described in more detail with reference to FIGS. It is necessary to superimpose a new lower stacking paper a on the preceding lower stacking paper b which has become less due to the paper feeding. Therefore, first, the top stacked paper b
The fork 25 inserted into the groove 5a as described above is lifted and supports the auxiliary pile lifting device 8 standing by below the insertion position of the fork 25.

Next, the pallet 5 is moved up and down for the main pile 2
After lowering to the pile loading position and removing it,
The new pallet 5 on which is mounted is carried into the main pile lifting device 2. At this time, the front end of the lower stacked paper a is in contact with a plurality of paper aligning plates 14 in front of the auxiliary pile cross bar 10b as shown in FIG. After loading, the elevator 5 raises the pallet 5, and when the upper surface of the lower stacked paper a comes into contact with the lower end of the fork 25, the support of the pallet 5 is stopped and the fork 25 is pulled out to load both upper and lower stacked paper b. , A are overlapped. Until the fork 25 is inserted and overlapped, the upper stacked paper b on the fork 25 is fed by the separator 13 and the upper surface is lowered, and the upper pile detector 8 (not shown) of the separator 13 intermittently raises the auxiliary pile raising device 8. And keep the upper surface constant.

[0014]

In the above-mentioned conventional device,
As shown in FIG. 2, when the upper surface of the lower stacked paper a hits the lower surface of the skewer supporting the upper stacked paper b, and the sensor 16 is turned “OFF”,
At the same time as stopping the rotation of the motor, the motor is braked to stop the main pile lifting device 2. Therefore, the lower stacking paper a,
Since the pallet 5 on which the lower stacking paper a is placed and the main pile lifting device 2 have inertia, the sensor 16 moves up from the position of "OFF", and the upper stacking paper b is pushed up and stopped. Due to this pushing up, the upper surface of the upper stacked paper b, which has been kept constant up to now, rises abnormally, and the separator 13 feeding the upper stacked paper b while separating it one by one causes a malfunction. The feeder stops.

In addition, the fork 25 is moved and aligned each time the pallet 5 moves in the left-right direction in the intermittent ascending process of the lower stacked paper sheet a, but it is wasteful since only the aligning operation immediately before the fork insertion is necessary. Also, if the fork is moved many times, a movement error with respect to the fork installation position is accumulated. Next, the fork is moved with respect to the pallet position that is determined when the pallet is loaded into the main pile lifting device by an automatic pallet loading device or the like, and therefore high loading accuracy is required. With a rough loading accuracy, the fork may not fit in the groove.

In the conventional paper feeder with non-stop device, the fork 25 is raised intermittently by the auxiliary pile lifting device 28, while the fork 25 is raised and lowered by the arm lifting device 23 of the non-stop device. Therefore, the lifting device is redundantly provided on the fork 25, which is wasteful.

The pallet 5 into which the fork 25 is inserted
The groove 5a of No. 5 returns to the reference position when one of the left and right sides of the stacked sheets is always detected and is displaced from the reference position, in case the sheet stacking condition is bad and the left and right sides are wavy in the vertical direction. Since it is moved in the left-right direction like this, it is moving left-right each time it is detected. Therefore, a part of the skewer 12 of the fork 25 that is inserted into the groove 5a beyond the paper aligning plate 14 and onto the crossbar 10b for the auxiliary pile overlaps the position of the groove 5a and the paper aligning plate 14, and when inserting Hit the alignment plate 14,
The above insertion may not be possible. Therefore, FIG.
As shown in FIG. 5, a portion (shown by diagonal lines) corresponding to the fork insertion section of the paper aligning plate 14 is cut out. Therefore, due to this cutout, when the remaining amount on the pallet 5 becomes small and the stacked paper sheet rises to the cutout portion, there is no member for hitting the front side of the stacked paper sheet, which causes a paper feed failure (for example, curled paper is fed). , The paper feed section stops.

[0018]

In order to solve the above problems, the present invention provides (1) a sheet feeding machine of a sheet-fed printing press, a fork of a non-stop device for supporting an upper stack of sheets of the sheet feeding machine. A detector such as a potentiometer that detects the height of the insertion position, a displacement sensor that measures the height of the upper surface of the lower stacked paper placed on the pallet that is carried into the main lifting device,
And a control means for controlling a stop position of the main pile lifting device that is lifted to stack the upper and lower stacked sheets.

That is, according to the first aspect of the present invention, the main lifting device supports the lower stacked paper, the auxiliary lifting device supports the upper stacked paper, and the bottom of the stacked paper is held by a fork to move. In a sheet feeding machine of a sheet-fed printing press provided with a non-stop device that enables continuous feeding by stacking both lower stacked sheets, a fork of the non-stop device that supports the upper stacked sheet in the sheet feeding machine A detector for detecting the height of the insertion position, a displacement sensor for measuring the height of the upper surface of the lower stacked paper placed on the pallet carried into the main lifting device, the displacement sensor and the detector A control means for controlling a stop position of the main lifting device that is raised to superpose the upper and lower stacked sheets on the basis of a signal, and an upper surface of the lower stacked sheet contacts a lower surface of the fork of the non-stop device. right before Stopping the serial main lifting apparatus for providing the feeder with a non-stop device of a sheet-fed printing press according to claim.

(2) The invention of claim 2 is (1)
In the invention of claim 5, there is provided a displacement sensor for measuring the distance between the pallet on which the lower stack of paper is placed and either the left or right side of the fork of the non-stop device. We also provide a paper machine.

Further, as (3) the invention of claim 3,
In the invention of (1) or (2), the top stacking paper is held only by a cantilever fork provided in the non-stop device instead of the auxiliary lifting device. Machines are also provided.

[0022]

In the invention of (1), the fork of the non-stop device is inserted into the pallet on which the upper stacked sheets are placed, and then the hoist is lifted by the auxiliary lifting device. A reference position at the insertion position of the lower surface of the fork supporting the upper stacked sheets, for example, a height P from the floor surface is detected by the detector, and a displacement sensor "B" (installed on the pallet loading side of the paper feeder is Since the height Q of the upper surface of the lower stack of paper placed on the pallet from the reference position is measured by a visible light laser or the like, the distance from the lower surface of the fork to the upper surface of the lower stack of paper is (P -Q).

During this distance (P-Q), the main elevating device, and hence the lower stack of paper, is accelerated to a certain ascending speed, and after reaching a certain speed, the height of the main pile elevating device at the height R from the reference position. Stop the motor. At the same time, the motor is braked to stop the main pile lifting device at the position where the upper surface of the lower stack of paper contacts the lower surface of the fork due to inertia. This R
Since the torque characteristics of the motor, the number of rotations of the motor at the constant speed, the GD ² and the braking force, the weight of the members of the main pile lifting device other than this motor, the weight of the pallet and the lower stacking paper, etc. are known, Make a decision based on

Further, in the invention of (2), in addition to the operation of (1) described above, the distance from each side surface of the pallet and the fork is measured by the displacement sensor, and the fork groove center of the pallet and the fork of the pallet are measured. Since the fork is moved by the non-stop device so that the centers of the skewers coincide with each other, the pallet and the fork do not exactly coincide with each other and the fork cannot be inserted.

In addition, in the invention of (3), in addition to the operation of (1) or (2) described above, the cantilever fork holds the upper stacked paper, so that it is necessary in the conventional device. The auxiliary pile elevating device for intermittently raising the upper stack of paper placed on the fork and the pair of front and rear crossbars for supporting the skewers of the fork by both ends are not required, and the paper feeder is simplified. Also, the fork can be stopped in front of the paper alignment plate, so it will not come into contact with the paper alignment plate, and the fork that will be inserted into the groove of the pallet that moves left and right due to the side where the paper stack is bad will be inserted securely. It

[0026]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a side view of a sheet feeding machine with a non-stop device of a sheet-fed printing press according to a first embodiment of the present invention.
In FIG. 6, the same symbols as in the conventional FIG. 6 indicate the same members. That is, 2 is a main pile lifting device, 3a and 3b are main pile hoisting chains, 4a and 4b are main pile cross bars, and 5 is a pallet provided with a groove 5a into which a fork is inserted (detailed view of X part in FIG. 1). 2), 6 is a sprocket, 7 is a drive motor for the main pile lifting device 2, 8 is an auxiliary pile lifting device,
9a and 9b are lifting chains for auxiliary piles, 10a and 1
Reference numeral 0b is a crossbar for the auxiliary pile, and 11 is a non-stop device. Reference numerals 12a to 12h are plural skewers, and 13 is a separator.

The non-stop device 11 includes a column 21 and a column 2.
1, an arm 22 that moves up and down along with 1, an arm lifting device 23 that is provided on the column 21 and that reciprocates the arm 22 in the vertical direction,
The fork 25 is provided so as to be movable in the front-rear direction and the left-right direction (arrow X and Y directions). By moving the fork 25 in the front-back direction, the fork 2 is attached to the pallet 5.
5 is inserted and withdrawn.

Next, the pallet 5 of the paper feeder having the above-mentioned structure
Displacement sensor "B" is provided on the column 21 on the carrying-in side, the rotary potentiometer "A" is provided on the sprocket 26 of the arm lifting device 23, and the rotary potentiometer "D" is provided on the sprocket 6 of the main pile lifting device 2. ing.

From these A, B, and D, the height P from the reference position of the lower surface of the fork at the fork insertion position is
The height Q from the reference position of the upper surface of the lower stacked paper a on the pallet 5 loaded into the main pile lifting device 2, and the reference position of the position where the motor 7 is braked to stop the main pile lifting device 2. The height R is measured or detected. The reference position may be the floor surface, for example.

Although not shown in the figure, the controller is a potentiometer "A",
Since the distance (height) from the floor surface where the "D" and the displacement sensor "B" are attached is known, these potentiometers "A", "D" and the displacement sensor "B" are known.
The heights P, Q and R from the reference position can be obtained by adding or subtracting the known distance to the value detected or measured by. In addition,
It goes without saying that A and D are not limited to potentiometers and may be other detectors for measuring height.

When the main pile lifting device 2 reaches the position of height R, the control device stops the motor 7 by the signal transmitted from the potentiometer "D", the motor 7 is braked, and the main pile lifting device 2 is lifted. The upper surface of the lower stacked paper a that is in contact with the lower surface of the fork 25,
Stop without pushing 5. Since the distance between the height R and the height P, that is, (P-R) is the calculated braking distance, the position of this height R is set in the timer "C" (in the motor control circuit of the control panel). You can also set and measure the time.

Next, the operation of the first embodiment will be summarized. After the forks are inserted into a plurality of longitudinal grooves provided on the pallet on which the upper stacked paper b is placed, the forks are hung by the auxiliary pile cross bars 10a and 10b to support the lower surface of the fork that supports the upper stacked paper b. The reference position at the insertion position, for example, the height P from the floor surface is measured by the rotation angle of the rotary potentiometer "A" provided on the rotation shaft of the fork lifting device.

Further, the height of the upper surface of the lower stacked paper placed on the pallet from the reference position by the displacement sensor "B" (by a visible light laser or the like) installed on the pallet loading side of the paper feeder. Since Q is measured, the distance from the lower surface of the fork to the upper surface of the lower stack of paper is (P-Q).

During this distance (P-Q), the main pile elevating device, and hence the lower stacking paper a, is accelerated to a constant ascending speed, and after reaching a constant speed, the main pile elevating device is lifted at a height R from the reference position. When the motor is stopped, the motor is braked, and the height R is calculated so that the main pile lifting device is stopped at the position where the upper surface of the lower stacked paper a contacts the lower surface of the fork 25. Torque characteristics, the number of rotations of the motor at the constant speed, GD ² and braking force, the weight of members of the main pile lifting device other than this motor,
It is easy because the weights of the pallet and the lower stacking paper are known. (These parameters may be input to the CPU and may be calculated by the formula previously input to the CPU.) Next, FIG. 3 is a non-stop apparatus for a sheet-fed printing press according to a second embodiment of the present invention. FIG. 4 is a side view of the attached paper feeder, and FIG. 4 is a plan view of the fork in FIG. In the figure, reference numerals 2 to 13, which are the main components, are the same as those in the first embodiment, and therefore their explanations are omitted.

The pallet 5 and the fork 2 are attached to the bracket 33 that moves up and down together with the arm 22 of the non-stop device 11.
Displacement sensors 31 and 32 for measuring distances A and B to the left side surface of 5 are attached. As shown in FIG. 4, the displacement sensors 31 and 32 are fixedly mounted after adjusting the distance S.

Since the fork 25 is inserted into the groove 5a of the pallet 5 in the fork insertion area in the upper and lower directions, when the pallet 5 is lifted to the height at which the displacement sensor 31 is provided in the main pile lifting device 2. It is measured by the displacement sensor 31 up to the left side surface of the pallet 5. Until the distance B to the side surface of the fork 12a measured by the displacement sensor 32 becomes equal to the measured distance A, or the distance B is within a certain allowable value (crossing) ΔA with respect to the distance A, that is, A
The fork 25 is moved in the left-right direction until it falls within ± ΔA. This movement is performed by the device 30.

In FIG. 4, the mounting distance S between the displacement sensors 31 and 32 is C, the distance from the side surface of the pallet 5 to the center of the width of the groove 5a into which the skewer 12a is inserted, and the diameter of the skewer 12h is d. Then, S = (C−d / 2). S = (C-d
/ 2), so that B is moved to be equal to A, the centers of the skewers 12a to 12h of the fork 25 come to the center of the groove 5a of the pallet 5, and the fork can be accurately inserted. .

A device 30 for moving the fork 25 in the left-right direction is attached to, for example, a motor p fixed to a block n attached to a pin of a chain m moving in the front-rear direction, and an output shaft of the motor p. The gear q is composed of a gear r, a screw r meshing with the gear q, which is machined on the shaft of the gear, and a connecting member 26 of a fork 25 screwed to the screw r.

The operation of the second embodiment will be described collectively. For example, the displacement sensors 31 and 32 measure the distances A and B of the pallet 5 to the side surface of the fork 25, respectively, and the distance B becomes the distance B. The fork 25 is moved in the left-right direction by the moving device 30 until they become equal. Therefore, the position of the groove 5a of the pallet 5 and the skewer of the fork 25 are exactly aligned.

Further, since the displacement sensor for the pallet 5 is provided close to the lower part of the fork insertion position, the fork can be moved according to the position of the pallet just before the fork insertion, so that the paper stacking condition is bad. , Even if the left side is wavy in the vertical direction, there is no failure in inserting the fork into the groove of the pallet.

Next, FIG. 5 is a side view of the sheet feeder with a non-stop device of the sheet-fed printing press according to the third embodiment. In the figure, reference numerals 1 to 7 and 11 to 13 are the same as those in the first and second embodiments, and the main difference is that the auxiliary pile lifting device is not provided. Therefore, the auxiliary pile lifting device 8, the auxiliary pile hoisting chain 9, and the auxiliary pile crossbar 8 are not provided.

As in FIG. 10, the non-stop device 11 has a column 21 adjacent to the rear side of the frames 1a and 1b of the sheet feeder, an arm 22 that moves up and down along the column 21, and an arm 22 vertically. Reciprocating arm lifting device 23,
Fork carrier 24 and fork carrier 2 provided on the arm 22 so as to be movable in the front-rear direction (arrow X).
4 is composed of a cantilever fork 41 provided so as to be movable in the front-rear and left-right directions (arrows X and Y). The fork 25 differs from the conventional one in FIG.
1 in that the cantilever fork 41 is in the groove 5
When it is inserted in a, it stops just before contacting the paper alignment plate 14.

An actuator for driving the arm lifting device 23, for example, an electric motor, an actuator for moving the push unit in the front-back direction, and a fork 41.
The actuators that move back and forth and left and right are the same as in FIG.

Therefore, the upper stacked paper b supported by the fork 41 is fed by the separator 13, and when the upper surface of the upper stacked paper b is lowered, the upper and lower stacking device 23 operated by the above-mentioned upper surface detector of the separator 13 is operated. Intermittently rises,
The height of the upper surface is kept constant. Further, the fork 41 inserted into the groove 5a of the pallet 5 on which the upper stacked paper b is placed supports the upper stacked paper b, and the upper surface of the lower stacked paper a placed on the new pallet 5 that has risen next is Upon contact, fork 25
Is pulled out, and the upper and lower stacked sheets b and a overlap each other.

In this case, the fork 41 has a poor stacking of the paper on its side surface, and the position of the pallet 5 is moved left and right by the upper stacking paper b which is wavy in the vertical direction, and the fork 41 is inserted according to this moved position. Is completely inserted without contacting the paper aligning plate 14.

Next, the operation of the third embodiment will be described collectively. Since the arm raising / lowering device 23 that continuously raises and lowers and the fork that rises together with this arm via the fork carrier 24 is the cantilever fork 41, the top stacking paper b placed on the conventional fork 25 is
Pile lifting device 8 for intermittently raising the fork, and a pair of front and rear crossbars 10 for supporting the skewers of the fork with both ends
Since a and 10b are not necessary, the paper feeder becomes simple.

Since the cantilever fork 41 stops before the paper aligning plate 14, the cantilever fork 41 does not come into contact with the paper aligning plate 14 and the groove 5 of the pallet 5 moves left and right due to the side of poor stacking of paper.
The fork that is inserted in line with a is surely inserted.

[0048]

As described above in detail, in the present invention, (1) the fork insertion position, the position of the upper surface of the lower stack of paper carried into the main pile lifting device, and the position of the main pile lifting device. Since the upper and lower stacking papers are stacked, the upper surface of the lower stacking paper that rises by the main lifting device makes light contact with the lower surface of the fork that supports the upper stacking paper, Since the upper stacked paper is not pushed up, the upper surface of the upper stacked paper is always kept constant. Therefore, the improper sheet feeding and the sheet feeding failure that occur due to the unevenness of the upper surface are eliminated, and the sheet feeding machine is not stopped, so that the operating rate of the sheet-fed printing press is increased.

Further, (2) since the displacement sensors for measuring the distances to the side surfaces of the pallet and the fork respectively are provided, the side surfaces of the pallet and the fork can be directly and accurately aligned, and the fork can be securely aligned with the groove of the pallet. to go into. Therefore, when the pallet is loaded into the paper feeding device from the automatic pallet loading device or the like, the pallet may be rough in the horizontal loading accuracy.

Furthermore, since the non-stop device is provided with the cantilever for supporting the upper stacked sheets, the auxiliary pile lifting device provided in the conventional paper feeding device is not required and the paper feeding device is simplified. Also, the fork can be cantilevered and stopped before the paper alignment plate, so even if you insert the fork in alignment with the groove of the pallet that moves left and right without contacting the paper alignment plate,
Since it does not hit the paper alignment plate as in the past, it can be inserted securely.

[Brief description of drawings]

FIG. 1 is a side view of a sheet feeding machine with a non-stop device of a sheet-fed printing press according to a first embodiment of the present invention.

FIG. 2 is a detailed view of a portion X in FIG.

FIG. 3 is a side view of a sheet feeding machine with a non-stop device of a sheet-fed printing press according to a second embodiment of the present invention.

4 is a diagram of the pallet and fork in FIG.
(A) is a side view of a pallet, (b) is a top view of a pallet and a fork.

FIG. 5 is a side view of a sheet feeding machine with a non-stop device of a sheet-fed printing press according to a third embodiment of the present invention.

FIG. 6 is a perspective view of a sheet feeding machine with a non-stop device of a conventional sheet-fed printing press.

FIG. 7 is an enlarged view of a Y portion in FIG. 6, showing that the sensor is “ON”.
Indicates the state of time.

FIG. 8 is an enlarged view of a Y portion in FIG.
The state at the time of "F" is shown.

9 is a diagram showing the pallet and fork in FIG. 6,
(A) is a side view of a pallet, (b) is a top view of a pallet and a fork.

FIG. 10 is a side view of a conventional sheet feeding machine with a non-stop device.

FIG. 11 is a view as seen from the arrow Z-Z in FIG.

[Explanation of symbols]

 2 Main pile lifting device 5 Pallet 6 Sprocket 7 Motor 8 Auxiliary pile lifting device 11 Non-stop device 21 Strut 22 Arm 23 Arm lifting device 25 Fork 31 Displacement sensor 32 Displacement sensor 41 Cantilever fork

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideyuki Takano 1-1, Kotobuki-cho, Mihara-shi, Hiroshima Mihara Rishige Engineering Co., Ltd.

Claims (3)

[Claims] 1. A main lifting device supports lower stacked paper and an auxiliary lifting device supports upper stacked paper, and the bottom of the stacked paper is held by a fork to move vertically and horizontally to load both the upper and lower stacks. In a sheet feeding machine of a sheet-fed printing press provided with a non-stop device that enables continuous feeding by stacking sheets of paper, the height of the fork insertion position of the non-stop device that supports the upper stacked paper in the sheet feeding machine is high. Detector that detects the
A displacement sensor that measures the height of the upper surface of the lower stack of paper placed on the pallet that is carried into the main lifting device, and the upper and lower stacks of paper are superposed based on signals from the displacement sensor and the detector. A control means for controlling a stop position of the main lifting device that rises for matching, and stops the main lifting device immediately before the upper surface of the lower stack of paper contacts the lower surface of the fork of the non-stop device. Paper feeder with non-stop device for sheet-fed printing machine. 2. The sheet according to claim 1, further comprising a displacement sensor for measuring a distance between the pallet on which the lower stack of sheets is placed and either side surface of the fork of the non-stop device. Paper feeder with non-stop device for printing machine. 3. The non-stop device of a sheet-fed printing press according to claim 1, wherein the upper stacking paper is supported only by a cantilever fork provided in the non-stop device instead of the auxiliary lifting device. Paper feeder.