JPH11116075A - Automatic pile exchanger position adjusting method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and securely position a rod of an auxiliary pile supporting device. SOLUTION: An automatic pile exchanger of an offset sheet printer having a paper feeding device 2 is position-adjusted. A sheet pile S to be printed is prepared on the upper side of a pallet P having a number of grooves, and a support rod 7 of an auxiliary pile supporting device 3 is inserted into the groove in the pallet P for receiving the rest of the pile S. After the pallet P is placed on a pile support plate ST, the position of at least one groove on the upper side of the pallet P is detected on the side A or B, and before the support rod 7 is inserted into the groove in the pallet P, the support rod 7 is position-adjusted toward the side A or B by displacement quantity corresponding to the confirmed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a sheet processing machine,
In particular, a method for adjusting the position of an automatic pile changer of an offset sheet-fed printing press having a non-stop sheet feeding device, wherein a sheet to be printed is prepared as a pile on a pallet having a plurality of grooves, and an auxiliary pile support is provided. The support rods of this type are driven into grooves in a pallet to receive piles or remaining piles. Also, the present invention
Apparatus for adjusting the position of an automatic pile changer for a sheet processing machine, in particular for an offset sheet-fed printing press having a non-stop sheet feeder, comprising a vertically movable auxiliary pile support for receiving the remaining pile. The auxiliary pile support having a plurality of horizontally movable support rods which can enter and exit between the pile and the grooved pallet in the sheet transport direction. Having a vertically movable pile support plate for receiving the pile support, and a drive for operatively adjusting the lateral position of the pile support plate in operative connection with a control device.

[0002]

2. Description of the Related Art In an offset sheet-fed printing press, a sheet to be printed is taken out from the upper side of a sheet feeding pile and is conveyed to a pad via a conveying table. Offset sheet-fed printing presses process sheet thicknesses on the order of 1 mm or more, and have high speeds (10,000-15,000 sheets / hour).
The pile is used quite quickly in the machine's feeder, since it is conveyed through the machine. Preparing a new pile on the pile support plate so that the production run can be continued without interruption, ie positioning this new pile in exactly the same position below the remaining pile (remaining pile of already used pile) And then replace the remaining pile with the new primary pile.
It is necessary to make one. For this purpose, the slightly used pile (remaining pile) is removed from the pallet on the pile support plate, and after the pile support plate has been lowered to load the new main pile, the new main pile is again loaded. Automatic pile changers have been developed that can be placed in a precise position above the pile. These known pile changing devices work in particular with rake-like rods which move horizontally. In this case, these rods for receiving the remaining pile are provided on a vertically movable auxiliary pile support device.

DE-A-197 04 285, which has not yet been published, discloses such a pile changing device for an automatic sheet feeder of an offset sheet-fed printing press. In this pile changing device, the rods of the auxiliary pile support device are formed individually and / or in groups so that they can be moved in to lift the remaining pile. The pallets for receiving the piles have groove-shaped cross sections on their upper side, these grooves extending in the direction of the rods which are runnable and runnable. The auxiliary pile support device is positioned at a height level such that the rod can enter between the webs supporting the pile at exactly the height of the groove. For this purpose, after the pile support plate has been lowered and a new pallet has been placed, it is necessary to precisely position the pallet with the new pile with respect to the rod of the auxiliary pile support device. If this is not done, collisions between the rod and the web of the pallet (grooved section) can occur, which can lead to severe damage.

[0004] The possibility of simple position adjustment arises from the fact that a new pile-loaded pallet, which is placed on a lowered pile support plate, is brought into position exactly, in which case a forklift is used by the operator. Must be placed in place using This makes the handling relatively slow and cumbersome. In addition, this increases the time for the entire pile changing process, resulting in a relatively large remaining pile being retained by the auxiliary pile support, increasing the frequency of automatic pile changing.

From US Pat. No. 5,011,126,
It is possible to position the newly placed main pile below the auxiliary pile, using a pile support plate capable of reciprocating in the lateral direction, so that the remaining pile is accurately positioned above the new main pile. Are known. For this purpose, a detector is provided which can scan the position of the remaining pile (the side of the remaining pile) and the position of the main pile below it. However, this known device does not have a support rod of an auxiliary pile support device which cooperates with a channel forming section arranged on the upper side of the pallet.

[0006] From DE 41 29 702 A1 a distance measuring system is known which is used for special applications of pile position adjustment in automatic pile changing machines. The system consists of two measuring channels operating according to the principle of triangulation, with which the distance to the side of the remaining pile or the side of the main pile can be determined, respectively, and these piles are then positioned relative to each other by a corresponding positioning device. Position adjustment. However, this particular measurement system does not successfully align an auxiliary pile support with a horizontally movable rod with respect to a pallet with a grooved cross section on top.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to expand the method and the device for adjusting the position of an automatic pile changer as described in the dependent claims.
An object of the present invention is to avoid the drawbacks mentioned above and to ensure a simple and reliable positioning of the rod of the auxiliary pile support device with respect to the surface of the pallet receiving the main pile having a corresponding cross-section.

[0008]

In order to solve the above-mentioned problems, according to the method of the present invention, after the pallet is placed on the pile support plate, the position of at least one groove on the upper side of the pallet is changed to the A side or the B side. Direction, and before the support rod enters the groove of the pallet, the position of the support rod is adjusted in the A-side or B-side direction according to the confirmed position.

Further, in order to solve the above-mentioned problems, in the configuration of the present invention, the control device and at least a position of at least one groove of the pallet above the pile support plate are detected in the A-side or B-side direction. One sensor is operatively connected, and the supporting rod of the auxiliary pile supporting device is connected to the control device, and a driving device for adjusting the position of the supporting rod in the A or B direction according to the signal of the sensor is attached. I did it. An advantageous embodiment of the invention is:
Claims 2-7 and 9-15.

According to the present invention, after a new pallet is placed on a pile support plate for a main pile that has been completely or almost completely lowered, the position of the new pallet is detected by a sensor, and the auxiliary pile support device is detected. In order for the rods of the pallet to accurately enter the grooves between the upper webs of the pallet,
It is confirmed how much displacement must be moved in the direction A or B.

This means that, in accordance with the invention, in a first preferred embodiment, a sensor formed as a reflected light scanner is arranged in the lower area of the sheet feeder, by means of which the main pile is mounted on a pile support pallet. This can be achieved by confirming the lateral position of the pallet or groove forming section on which the pallet is placed. In this case, the reflected light scanner lifts the pile support plate on which a new pallet with a pile is placed on the upper side by a predetermined displacement amount at the height of the lower range of the sheet feeding device, preferably at the center thereof. Are arranged so that the effective scanning range is located exactly at the height of the groove forming section of the pallet. The pile support plate is then moved in the A and / or B direction by a predetermined amount of displacement, so that the position of the groove or the web located therebetween can be ascertained based on the scanning signal of the sensor. In order to confirm the position of the groove, the pile support plate is simply moved in one direction (for example, A
Side) and defining the position of the groove from the switching of the sensor signal may be sufficient. However, when the pile support plate is moved in both directions by a predetermined amount of displacement, and thus the signal course of the sensor, combined with a control signal for the positioning drive of the pile support plate, the center of the groove is determined with higher precision.

After defining the position of the groove, the pile support plate can be moved back to the basic position (center of the sheet feeder). next,
From the position of at least one groove or web, the rod or the entire auxiliary pile support device can be moved to the A side or B (starting from the zero position) so that the rod can accurately enter the groove of the pallet to receive the remaining pile. It can be determined how much lateral movement must be made. The support rod remains in this position, depending on the position of the pallet on the pile support plate, until a new entry, ie a new pallet with a new pile, is placed. After lifting the remaining pile off the pallet, the new main pile is brought into a position completely overlapping the remaining pile by a lateral adjustment movement. For this purpose, detectors are provided which scan the sides of the remaining pile and the main pile.

In the first preferred embodiment of the present invention described above, the pallet measurement is performed by a sensor (reflection light scanner) arranged in the lower area of the sheet feeding device. With this sensor, which cooperates with the upper side of the pallet in the area of the groove section,
Due to the periodicity of the groove forming cross-section, it is possible to define a minimum displacement of the support rods of the auxiliary pallet support device, so that the support rods can enter into the upper groove of the pallet between the support webs without collision. is there. Furthermore, with this one sensor, the pallet is placed in the correct position with respect to the pile support plate, that is, in particular, the edge of the pallet is parallel or well parallel to the corresponding alignment edge of the pile support plate. You can see if it is extended. Finally, this one sensor also makes it possible to determine whether a pallet of approximately the appropriate type is being used, i.e., a pallet above which the grooved section to be measured is to be used. That is, if a pallet without any grooved cross section is used on the upper side, the switching of the scanning signal as the pallet moves during the measurement according to the invention will not be ascertainable.

In another embodiment of the invention, the positioning of the pallets mounted on the pile support plate can be performed by two sensors spaced from each other. In this case, too, the rod or the entire auxiliary pile supporting device provided with these rods is moved in the direction A or B in combination with the signal of the sensor from the corresponding movement signal of the drive of the lateral positioning device of the pile support plate. The amount of displacement to be performed is specified.

After the measurement of the position of the pallet on the pile support plate while the pile support plate according to the invention has been moved laterally has been completed, in a preferred embodiment of the invention the pile support plate of the main pile is again It can be returned to the zero position and then laterally adjusted so that the sides of the main pile are aligned with (align with) the sides of the remaining pile held by the support rods of the auxiliary pile support device . after,
The remaining pile and the new main pile are brought together by pulling out the rod of the auxiliary pile support device.

After the support rod has been inserted between the pallet and the new main pile, the pile support plate and the auxiliary pile support move synchronously until the remaining pile reaches a predetermined minimum height. That is, the corresponding drive is moved synchronously by the scanning of the upper surface of the pile by the sensor. Thereafter, the pile support plate is lowered and moved to the base position at the bottom for loading a new pallet carrying the main pile. After placing the new pile with the pallet, the position of the pallet is measured again so that the support rods can enter the upper groove of the pallet without collision.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

The offset sheet-fed printing press 1 includes a paper feeding device 2.
The sheets are supplied from a transport table between them. For this purpose, the paper separating device 4
The sheet is taken from above the pile S (FIG. 1). The main pile S in the paper feeding device 2 is formed by a pallet P.
It is mounted on a pile support plate ST that can be raised and lowered by a lifting device (not shown). An elevating device 5 is provided in front of the paper feeding device 2.
The auxiliary pile support 3 which can be moved up and down via the guide rail 8 is provided. The auxiliary pile support 3 has a frame 6 in which a horizontally movable support rod 7 is mounted.
Is arranged. The support rod 7 is at a position where it has run inside the gantry 6 in the state of FIG.

The pallet P for receiving the main pile S on the pile support plate ST has a number of grooves N extending parallel to each other on the upper side thereof, and each of the grooves N remaining between these grooves N and below the main pile S. Web SG supporting the side (FIG. 5). The spacing and width of the grooves N and thus also the width of the web SG supporting the pile between these grooves N is matched to the spacing and width of the support rods 7 of the auxiliary pile support 3.

FIGS. 3 and 4 show the remaining pile R held by the support rod 7 of the auxiliary pile support 3 above the main pile S. First, a new pile was placed on the pallet P at the lowermost position of the pile support plate ST. After that, the pile supporting plate ST is moved to a predetermined height position above the basic position, and the forming section of the groove N and the web SG between them is arranged in the lower area of the sheet feeding device 2. , Facing the working range of the sensor 9 formed as an optical reflected light scanner (distance measuring system). Thereafter, the driving device 10 for adjusting the left / right position of the pile support plate ST is operated by the control device 11 for automatic pile exchange, and the pile support plate ST is moved by a predetermined displacement amount in the A-side and / or B-side direction. Moved to At this time, by the sensor 9 formed as a reflected light scanner, how much movement of the driving device 10 formed as a positioning driving device causes the edge of the transition portion between the groove N of the pallet P and the web SG to appear. In other words, it is possible to confirm how much the pallet P must be displaced on the pallet support plate ST in order for the sensor 9 arranged at the center of the paper size of the paper feeding device 2 to face the groove N of the pallet P accurately. The amount of displacement existing at the time of edge exchange of the output signal of the sensor 9 is determined by the controller 11.
Is detected and stored. The pile support plate ST includes a pallet P and a pile S on the pallet P,
Therefore, it has additional devices and markings (not shown) that allow it to be placed at least approximately in the center of the paper feed device 2.

The control device 11 controls the pile support plate ST
After the amount of displacement required by the driving device 10 for the right and left position adjustment of the at least one groove N is determined by the sensor 9 for detecting the position of at least one groove N, the A positioning and the B side are performed by another positioning driving device 12. The support rods 7 of the auxiliary pile supports 3, which are movably supported in the direction, are adjusted accordingly, so that these support rods 7 allow the auxiliary pile supports 3 to run under the pile S. After being moved to the height level, it can run into the groove N of the pallet P.

A pallet P and a pile support plate ST for defining the required orientation of the support rod 7 of the auxiliary pile support 3
And the lateral movement of the pile S is further shown in plan view in FIG. Here, it should be pointed out again that the driving device 10
Before the lateral movement of the pile support plate ST is performed by
To detect the position of at least one groove N, the pile support plate ST is located at a central basic position of the sheet feeding device 2. After measuring the pallet P, the pile support plate can likewise be moved back to the basic position. Support rod 7 of auxiliary pile support 3
Is also at the basic position (zero position) before the left and right position adjustment according to the required displacement confirmed by the sensor 9. For the first time the support rod 7 enters, the support rod 7 or the auxiliary pile support 3 is adjusted to the left and right. At this time, this position is maintained until the remaining pile R is lifted from the pallet P, and then the support rod 7 is pulled out to be combined with a new pile S. In doing so, the sheets that are removed from above the main pile S or the remaining pile R by the paper separating device 4 are always in the same orientation with respect to the lateral register.

Finally, it should be noted that the pile support plate ST
In addition to the above-described measurement of the position of the groove N or the web SG of the pallet P according to the present invention, the driving device 10 for the left / right position adjustment of the pile S also adjusts the left / right position of the pile S before being combined with the remaining pile R. Done. Thereby, each of the piles S newly placed is individually adjusted with reference to the remaining pile R held by the support rod.

[Brief description of the drawings]

FIG. 1 is a side view of a sheet feeding device to which a pile changer is attached.

FIG. 2 is a plan view of a sheet feeding device having an auxiliary pile support base.

FIG. 3 is a view showing a pallet supporting the main pile and a remaining pile taken out of the main pile by a support rod.

FIG. 4 is a side view of the situation shown in FIG. 3;

FIG. 5 is a perspective view of a pallet provided with a sensor used in the present invention.

[Explanation of symbols]

Reference Signs List 1 printing machine, 2 paper feeder, 3 auxiliary pile support, 4 paper separating device, 5 elevating device (auxiliary pile support 3), 6 mount, 7 support rod, 8 guide rail, 9 sensor, 10 drive (pile) (A lateral adjustment of the support plate ST), 11 control devices (sensor 9, drive device 10, drive device 12), 12 drive devices (lateral adjustment of the support rod 7 and the auxiliary pile support 3),
S pile (main pile), R remaining pile, P pallet, N groove (upper side of pallet P), SG web (upper side of pallet P), ST pile support plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Thomas Kleinschmidt Germany Otufenbatsch von-Bering-Strase 33 (72) Inventor Bernd Ulrich Germany Germany Karl Main-Friedenstrasse 11 (72) Inventor Roberto Ortner Germany Alzenau Gite Lung am Stein 26

Claims (15)

[Claims] 1. A method for adjusting the position of an automatic pile changer of a sheet-processing machine, in particular of an offset sheet-fed printing press having a non-stop sheet feeder, wherein the sheet to be printed is a pallet having a large number of grooves. Prepared as a pile on the upper side,
In a method in which the support rods of the auxiliary pile support are driven into the grooves of the pallet to receive the pile or remaining pile, at least one groove on the upper side of the pallet after placing the pallet on the pile support plate. Is detected in the A-side or B-side direction, and before the support rod enters the groove of the pallet, the support rod is adjusted in the A-side or B-side direction according to the confirmed position. Characterized by the method of adjusting the position of the automatic pile changer. 2. The pile support plate is moved in the A-side and / or B-side directions, and a signal is detected by at least one distance measuring system (sensor) in the range of the height of the groove or the web during the movement. The method according to claim 1, wherein the signals are evaluated in combination with the control signals of the respective drive to determine the position of at least one groove on the upper side of the pallet in the A-side or B-side direction. 3. The method according to claim 2, wherein the pile support plate is moved in the A-side and B-side directions, and a center position of the groove is defined from a signal of at least one distance measuring system. 4. The reciprocating movement of the pile support plate in the lateral direction is performed while scanning the pallet groove or web forming section at a vertical position above the lowest position of the pile support plate. the method of. 5. A molding section of the groove or web of the pallet is scanned by a distance measuring system fixedly arranged at the center of the pile support plate and at a predetermined height level of the pile support plate on which the pallet is placed. A method according to any one of claims 2 to 4. 6. The method according to claim 2, wherein the forming section of the groove or web of the pallet is scanned by at least two distance measuring systems fixedly arranged at a predetermined height level of the pile support plate on which the pallet is placed. The method according to any one of the preceding claims. 7. The machine according to claim 2, wherein the pile support plate is moved by a predetermined amount of displacement in the direction A and / or B of the machine in order to detect a groove of the pallet or a forming section of the web. Or the method of claim 1. 8. A device for adjusting the position of an automatic pile changer for a sheet-processing machine, in particular for an offset sheet-fed printing press having a non-stop sheet feeder, the machine being capable of moving up and down to receive the remaining pile. An auxiliary pile support having a plurality of horizontally movable support rods capable of entering and exiting between a pile and a pallet having a groove in a sheet conveying direction. And has a vertically movable pile support plate for receiving the main pile, and further for adjusting the left and right position of the pile support plate,
In the form having a drive operatively connected to a control device, the control device (11) and the position of at least one groove of the pallet (P) above the pile support plate (ST) are determined. A
At least one sensor (9) for detecting in the side or B-side direction is operatively connected to the auxiliary pile support device (3)
The driving device (1) connected to the control device (11) to adjust the position of the supporting rod (7) in the A-side or the B-side direction according to the signal of the sensor (9).
A device for adjusting the position of an automatic pile changer to which 2) is attached. 9. At least one sensor (9) is provided at a predetermined height in the sheet feeding device (2) and is attached to a side of the pile (S) which is located in a sheet conveying direction. ,
An apparatus according to claim 8. 10. A driving device (1) by a control device (11).
0), a pile supporting plate (S
During the transverse movement of T), the forming cross section of the groove (N) of the pallet (P) on the pile support plate (ST) can be scanned by at least one sensor (9) and the control device (11) ), The position of at least one groove (N) of the pallet (P) above the pile support plate (ST) is determined from the signal of the at least one sensor (9) in combination with the control signal of the driving device (10). Claim 9 which can be determined
The described device. 11. The method as claimed in claim 8, wherein the at least one sensor is designed as a distance measuring system. 12. The device as claimed in claim 8, wherein the at least one sensor is formed as an optical measuring system. 13. The device according to claim 12, wherein the at least one sensor is formed as a reflected light scanner. 14. The device according to claim 8, wherein the at least one sensor is formed as a mechanical scanner. 15. A method according to claim 8, wherein means for positioning the pallet (P) within a predetermined range on the pile support plate (ST) are arranged on the pile support plate (ST). The device according to claim 1.