DE4224832C3 - Device for positioning a magazine used for automatic plate change - Google Patents

Description

The invention relates to a device for positioning nation of a movable in several positions, the automatic printing plate changing serving Maga interest, the change of the pressure plate of the Plattenzy linders, the exchange of the printing plates of the magazine, machine service and normal operation possible are, with the magazine around a horizontal axis is pivotally mounted.

In the course of the automation of many works on the Printing machine that the printer has previously done manually magazines were developed, the old and Take up new printing plates, the plate cylinder with supply new printing plates and old printing plates accept. The problem arises that sol che magazines on existing printing presses must be brought up, taking the existing space between the individual printing units in almost all Machines is relatively tight.

From JP-61-2 48 834 A is a device of the known type, in which the magazine with means of an angular lever in three buttocks sitions is pivotable. For refilling and ent it is in one of the magazine's printing plates Setup position between the printing units bringable. For normal operation of the printing press the lever swings the magazine over the printing unit, so that the magazine in a substantially horizonta len position held by the lever above the pressure plant hovers. The lever swings to change the plate down and the magazine folds into an oblique position tion with the magazine end on the plate cylinder. By the position of the lever, as well as that for the plate change the required axis of rotation of the magazine is the Ma magazine in its set-up position in the space between between the printing units. As a result, the Refill and remove the pressure plates of the Maga interest can only be made from the side because the space between the printing units is not is more accessible. This will make the exchange of Cassette plates in large format machines problematic. By positioning the magazine above the printing unit in the normal operating position can replace the plates of the magazine during printing. The magazines are floating held by the levers while printing over the printing units, which makes them susceptible to vibration be necessary for work on the printing units Shield agile lighting and yourself do not insert the design into the overall machine. It protection for the printing units must be provided, where to change the plate from green the protection required by occupational safety Printing unit must be removed.

The invention has for its object a direction for positioning an automatic Printing plate changing magazine like this design that as little space as possible between the Printing units is claimed.

The task is marked by the characteristic male of claim 1 solved.

An additional advantage of the invention direction is that the magazine in a Nor the operating position of the delivery side of the printing unit covers as protection.

The further advantages of the invention exist besides avoiding the disadvantages of the known state of the art the technology in that the cassette in the normal drove the press close to the printing unit nestles and the accessibility to the inking unit is guaranteed. The printer can easily do the job working on the ink fountain, the spreading roller, the doctor and the lifter roller. Since the magazine with the printing unit is firmly connected over a large area no sensitivity to vibrations. The training in which the Magazine serves as printing unit protection in normal operation, because such a printing unit protection is turned on in this way is saved and no removal of the printing unit protection it is necessary for the automatic plate change. A manual operation or an additional pre direction for automatic printing unit protection removal worries are no longer required.

Appropriate refinements and training the invention are claimed in the subclaims and described below:

It is envisaged that the magazine be trained in this way det is the printing plates of the magazine from above are interchangeable. In this way, during of the printing press run the old printing plates remove from the magazine and new printing plates in insert the magazine. This leads to a shortening the one to be carried out between the printing work Setup time.

The vertical guide is designed so that the Maga move zin so far up into a service position bar is that access to the printing unit for all service work is guaranteed. In this way establish a state by means of an operating command, in the inking unit for the printer, the plate cylinder and the blanket cylinder, as well as the other parts of the printing unit are completely accessible. It can also Removal of the rollers made from the printing unit become. There is almost no activity under the Machine maintenance, which is a complete removal of the Ma gazins required.

A lock that allows vertical adjustability of the magazine locked in the service position serves the additional protection for a person providing such service work.

To change the plate, it is provided that that the magazine by moving and swiveling in one run approximately tangential to the plate cylinder de plate change position can be brought in the pressure plates in the clamping and clamping device of the plat insertable and removable from this cylinder are. The vertical Ver adjustability of the magazine in the plate changing position also locked by the lock.

A further embodiment provides that the axis one on each side of the magazine sliding rail is mounted, each sliding Rail runs in a fixed rail, the rail NEN serve as a vertical guide and by means of the axis a locking device in the vertical position tion of the magazine can be locked. By locking safe storage of the magazine is achieved, the This is particularly advantageous for pneumatic drives is because the positioning even if the pressure fails air is retained.

As training for the drive for the vertical adjusters lung provides for training that on each side of the magazine with the sliding rail ver tied up, on the base of the printing press supporting lifting cylinder is arranged, the  Lift cylinders have a length that is at least that Distance between the normal operating position and the Service position of the magazine corresponds.

The drive for swiveling is designed in this way tet that one at each end of the magazine lever firmly connected to the axis with a swivel cylinder communicates with its other End is suspended on the sliding rail.

A perfect positioning of the magazine in the Plate change position can be achieved in that the magazine has two roles that the Schmitzrin opposite at the ends of the plate cylinder and in the plate changing position on the bearer rings striking on this one.

The locking device is provided for Locking of the vertical alignment of the magazine form such that the locking device egg NEN first stop firmly connected to the axis which is in a vertical position of the magazine bears against a second stop, which ver sliding rail is firmly connected and tilting the top of the magazine towards the printer kes prevents one on the sliding rail mounted pivoted lever with pawl on the other ren side of the first stop and that at the slidable rail attached a locking cylinder through which the swiveling lever with ratchet except Intervention and can be brought into engagement.

The magazine is locked in a verti This can shift kales adjustable position be achieved that the. Locking one on one fixed part in the uppermost area of the fixed Rail mounted pivotable ratchet lever points by a spring against a stop ge presses and a slope and a recess points, the. Pawl lever by means of the slope by connected to the sliding rail Lock is push back and the spring latches lever after the incline has passed over a lock in the recess against the stop presses that the ratchet lever by a release cylinder can be unlatched and that the unlatching cylinder which is also an upper stop for the Locks in and out of engagement.

For vertical locking of the magazine in the servi ceposition can be a first lock at the bottom of the sliding rail can be arranged and for the Locking in the plate changing position becomes a second lock at the location of the sliding rail arranged in the plate change position of the Ver locking is opposite.

The lifting cylinder, the tilt cylinder, the locking cylinder the and the unlatching cylinder are expedient partially designed as a pneumatic cylinder because there by a simple structure of the drives is possible existing compressed air on the machine no damage can be caused by a leak in the lines which can occur as with hydraulics.

An embodiment is shown in the drawing poses.

It shows

Fig. 1 is a partial view of a printing unit with which he inventive device from the delivery side,

Fig. 1a is an enlarged partial view of Fig. 1,

Fig. 2 is a side view of the apparatus partly in section in the normal operating position,

Fig. 3 shows the same view as Fig. 2, but in the plat tenwechselposition.

Fig. 4 this view in the service position and

Fig. 5 shows an expedient embodiment of the vertical adjustment.

Fig. 1 shows a partial view of a printing unit, from the delivery side, with a device for the positioning of an automatic printing plate changing serving magazine 1 . The magazine 1 is suspended by means of an axis 3 in a vertical guide 2 . This consists of a fixed rail 9 and a displaceable rail 8 mounted therein. The axis 3 is inserted into this slidable rail 8 . The fixed rail 9 and the displaceable rail ne 8 have such a length that the magazine 1 can be moved from the normal operating position A shown to a service position C ( FIG. 4) in which the magazine 1 is pushed as far upwards, that an operator comes for service work on parts of the printing unit 4 che. This adjustment of the magazine 1 is carried out by a lifting cylinder 12 which has a length corresponding to this adjustment path. This lifting cylinder 12 is connected to the displaceable rail 8 . On the underside, the lifting cylinder 12 is supported on the base 11 of the machine. An adjusting screw 33 is used for the exact positioning of the lifting cylinder 12 . A tilt cylinder 14 serves to spend the magazine 1 in the plate changing position B ( Fig. 3). There is also a locking cylinder 19 , which ensures that the magazine 1 is held firmly in its vertical position and can be pivoted about the axis 3 only for movement into the plate changing position B by means of the tilt cylinder 14 . These parts are shown in more detail in Fig. 2 and are explained further below.

Since it is useful to lock the vertical adjustment of the magazine 1 , a corresponding locking 6 with a release cylinder 27 is provided. Such a lock is required in the service position C to ensure with certainty that when Ar work are made, the magazine 1 remains in this position even if the lifting cylinder 12 fails. In this way, an interruption in the compressed air supply can no longer cause the Maga zin 1 to leave the service position C. For the plate change selposition B such a lock is required to achieve an exact positioning, which must not be affected by disruptions in the compressed air supply. To achieve the Arretie tion in the service position C, a first lock 25 is arranged at the lower end of the sliding rail 8 . In the central area of the rail 8 , a second lock 26 is used for locking in the plate change position B. The second lock 26 is arranged in such a way that after a latching in this position and a subsequent pivoting of the magazine 1, this exactly the plate change position at the clamping and Clamping device (not shown) of the plate cylinder 7 it is sufficient.

Fig. 1a shows enlarged how a locking device 6 is attached in the upper region of the fixed rail 9 for the detents. On the fixed slide ne 9 , a ratchet lever 20 is arranged, which has a bevel 23 , which interacts with the locks 25 , 26 in such a way that the ratchet lever 20 is pivoted about a bearing against the force of a spring 21 until the corresponding lock 25 or 26 the slope 23 has run over and engages in a recess 24 . This process is illustrated by the hint of the two th lock 26 in the position 26 ', in which it runs against the slope 23 , and in the position 26 ", in which it is held between the recess 24 of the ratchet lever 20 and the upper stop 28 The pivoting of the pawl lever 20 in the direction of the displaceable rail 8 is limited by a stop 22. A unlatching cylinder 27 is used for unlatching, which has an adjustable part 35 with a shoulder 24 for retracting the pawl lever 20. This adjustable part 35 of the unlatching cylinder 27 also has an upper stop 28 which limits the displacement of the locks 25 , 26 upwards, but can also be disengaged by the unlatching cylinder 27 when the latch lever 20 is pulled back, which releases the lock 26 and latching of the lock 25 is necessary.

Since only one side of the printing unit 4 is shown, it must be considered that the described devices are advantageously present on both sides of the magazine 1 and these positioning and locking devices on both sides of the magazine 1 cooperate synchronously. It is required that in any case the tilt cylinder 14 and the lifting cylinder 12 and the lock 6 must be on both sides before. This is not absolutely necessary for the locking device 10 , which holds the vertical orientation of the magazine 1 . The control panel 31 of the printing unit 4 can also be seen. This must not be covered by the device.

Fig. 2 shows a side view of the printing unit 4 with magazine 1. In this view, the vertical guide 2 in front of the magazine with the displaceable rail 8 , the fixed rail 9 and the locking device 6 are omitted with their individual parts. These parts are shown as far as they are behind the magazine 1 . The parts are identical on both sides of the magazine 1 except for the locking device 10 , which can also be arranged on one side only.

The tilt cylinder 14 serves to pivot the magazine 1 into the plate changing position B, as shown in FIG. 3. The tilting device has in addition to the tilt cylinder 14 , which is attached with its upper end to the displaceable rail 8 , a He bel 13 , which is fixed to the axis 3 of the magazine 1 and by means of an articulation point with the piston rod of the tilt cylinder 14 in connection is in position A, the piston rod of the Kippzylin 14 is extended and the magazine 1 thereby assumes a vertical position, as is required for the normal operating position A and the service position C. When the piston of the tilt cylinder 14 pulls the piston rod back, the magazine 1 pivots into the plate changing position B, as shown in FIG. 3.

For the normal operating position A, as shown in Fig. 2, as well as for the service position C, which shows Fig. 4, it is necessary to lock the magazine 1 in its vertical alignment. This serves the locking device 10th This has a first stop 15 fixedly connected to the axis 3 , which in the position shown abuts a second stop 16 , this second stop 16 being connected to the displaceable rail 8 , not shown. The stop 15 can be by means of an adjusting screw 32 in a precisely vertical position of the magazine 1 is provides. The first stop 15 is held in the drawn, vertical position of the magazine 1 by a pawl 18 which can be unlatched by means of a lever 17 with the pivot point. This pivot point is just in case connected to the sliding rail 8 . The actuation of the lever 18 serves a locking cylinder 19 which is suspended at its lower end on the displaceable rail 8 .

From the representations of FIG. 2 as in FIG. 1 it can be seen that the magazine 1 in the normal operating position A covers the printing unit 4 on the delivery side. In this way, the magazine 1 serves to protect the printing unit 4 , so that a separate protection of the printing unit is no longer required. In this way, such protection is not only saved, it does not have to be removed for the movement of the magazine 1 into the plate change position belly.

From Fig. 2 it can be seen that the magazine 1 located in the normal operating position A does not hinder the accessibility to the inking unit 5 . In this way, the printer can easily get to the ink fountain, the platen roller, the ductor, the siphon roller or other elements of the inking unit 5 during normal operation of the printing unit. All the work that may be required during printing is possible without any hindrance.

Fig. 3 shows the same view as Fig. 2, but the magazine 1 is in the plate change position B. In this representation, all parts with the same reference numerals correspond to the parts that have already been described in Fig. 1 and Fig. 2.

In the following, with reference to FIGS 1 to 3, the radio of the device for the movement of the magazine 1 in the disk exchange position B tion described.:

To move the magazine 1 into the plate change selposition B, the lifting cylinder 12 first comes into operation and pushes the slidable rail 8 with the magazine 1 up until the second lock 26 is held in the lock 6 . Thereafter, the locking device 10 enters disabled by the locking cylinder 19 17 pivots the lever, releasing the first stopper 15 and thereafter the Kippzy linder 14 via the lever 13, the tray 1 about the axis 3 while pivots until the magazine 1, the plate Wech selposition B reached. A safe reaching of this plate change position B is achieved in that two rollers 29 are attached to the magazine 1 which lie opposite the bearer rings of the plate cylinder 7 and strike the bearer rings when the plate change position B is reached. In this position B, a used printing plate can be removed from the plate cylinder 7 by the fact that the clamping and clamping device, not shown, releases the printing plate at one end so that it can be pushed into the magazine 1 or can be grasped and drawn there. A new printing plate is then conveyed out of magazine 1 , inserted into the clamping and tensioning device and wound around plate plate 7 . The end of the pressure plate is pushed into the clamping and tensioning device with a pressure roller (not shown), clamped there and tensioned. In these processes, the positioning of the magazine 1 is maintained in that the magazine 1 is held vertically by the lock 6 and the inclination is maintained in that the rollers 29 run on the bearer rings.

The return to the normal operating position A takes place in that the tilt cylinder 14, the Maga zin 1 transported back to the vertical position and then a lock in this position is carried out by the locking device 10 by the locking cylinder 19 pivots the lever 17 again and thereby first stop 15 is held between the second stop 16 and the pawl 18 . Then after the lifting cylinder 12 comes into action by lowering the magazine 1 by means of the displaceable rail 8 until the normal operating position A shown in FIGS. 1 and 2 is reached again.

Fig. 4 shows the magazine 1 in the service position C. Here, too, all parts with the same reference characters correspond to the parts described so far. For supplying the magazine 1 in the service position C, the lifting cylinder 12 is actuated until all parts of the printing unit 4 are released for service work. When this position is reached, the first lock 25 is held in the manner described by the lock 6 festge. In this way it is achieved that the positioning of the magazine 1 in the service position C is retained even if the actuating medium of the lifting cylinder 12 fails. When the magazine 1 is moved to the service position C and when it remains in this position, the locking device 10 remains in its locking position in order to securely lock the magazine 1 in the vertical position. As shown in FIG. 4, the locking device 10 and the tilt cylinder 14 with the parts interacting therewith are displaced upwards with the displaceable rail 8 , since they are connected to the latter. As in FIGS. 2 and 3, the sliding rail 8 and the fixed rail 9 , which are in front of the magazine, are also removed for clarity. In the drawn position, the piston rod 30 of the lifting cylinder 12 is visible, which must have a length corresponding to the adjustment path.

Fig. 5 shows a practical embodiment of the vertical movement of the magazine in order to achieve a synchronous running. For this purpose, fixed, vertically extending de racks 40 , 40 'are arranged on both sides of the magazine 1 . In these toothed rack conditions run gears 41 , 41 'which are connected by a connec tion shaft 42 . This Ver connection shaft 42 is connected by a bearing 43 , preferably with two bearings, with the magazine 1 . For the arrangement of the toothed racks 40 , 40 ', attachment to the fixed rails 9 , 9 ' or to a base body, which also carries the fixed rails 9 , 9 ', is appropriate.

This training ensures a synchronous, jerk-free and clean running of the vertical adjustment of the magazine. Of course, other syn Chronizing devices possible, for example both guides with the help of chains or toothed belts.

Reference list

1

magazine

2nd

Vertical guidance

3rd

axis

4th

Printing unit

5

Inking unit

6

Interlock

7

Plate cylinder

8th

,

8th

'' sliding rails

9

,

9

'' fixed rails

10th

Locking device

11

Substructure

12th

,

12th

'' Lifting cylinder

13

lever

14

Swivel cylinder

15

first stop

16

second stop

17th

lever

18th

pawl

19th

Locking cylinder

20th

Ratchet lever

21

feather

22

attack

23

Weird

24th

Recess

25th

first lock

26

second lock

26

',

26

"Position of the second lock

27

Unlatching cylinder

28

upper stop

29

roll

30th

Piston rod of the lifting cylinder

31

Control panel of the printing unit

32

Adjusting screw

33

Adjusting screw

34

paragraph

35

adjustable part

40

,

40

'Racks

41

,

41

'' Gears

42

Connecting shaft

43

storage
ANormal operating position
BPlate change position
CService position

Claims (15)

1. Device for positioning a movable in several positions, the automatic printing plate sel sel serving magazine, the change of the printing plate te of the plate cylinder, the exchange of the printing plates of the magazine, the machine service and normal operation are possible, the magazine around a horizontal axis se is pivotally mounted, characterized in that the magazine ( 1 ) regardless of the pivoting movement from the position for normal operation (A) in the vertical position in a linear vertical guide ( 2 ) via the position for changing the printing plates into the position for the machine service (C) and can be moved back. 2. Device according to claim 1, characterized in that the magazine in the normal operating position (A) covers the cantilever side of the printing unit ( 4 ) as protection and the top of the inking unit ( 5 ) is accessible. 3. Device according to one of claims 1 or 2, characterized in that the magazine is displaceable so far up into the service position (C) that the printing unit ( 4 ) is accessible for all service work. 4. The device according to claim 3, characterized in that a lock ( 6 ) the vertical adjustability of the magazine ( 1 ) in the service position (C) and in the plate changing position (B) arre tiert. 5. The device according to one or more of claims 1 to 4, characterized in that the axis ( 3 ) on both sides of the magazine ( 1 ) is mounted in a displaceable rail ( 8 ), and each displaceable rail ( 8 ) in a fixed rail ( 9 ) runs, the rails serving as a vertical guide ( 2 ), and that the axis ( 3 ) by means of a locking device ( 10 ) in the vertical orientation of the magazine ( 1 ) is locking bar. 6. The device according to claim 5, characterized in that on each side of the magazine ( 1 ) with the displaceable rail ( 8 ) connected to the substructure ( 11 ) of the printing press supporting cylinder ( 12 ) is arranged and that Lift cylinder ( 12 ) has a length which corresponds to at least the distance between the normal operating position (A) and the service position (C) of the magazine ( 1 ). 7. Apparatus according to claim 5 or 6, characterized in that on both sides of the Maga interest ( 1 ) each with the axis ( 3 ) fixed verbun dener lever ( 13 ) with a pivot cylinder ( 14 ) in communication, which on his the other end is suspended from the sliding rail ( 8 ). 8. The device according to one or more of claims 1 to 7, characterized in that the magazine ( 1 ) has two rollers ( 29 ) which lie opposite the bearer rings at the ends of the plate cylinder ( 7 ) and in the plate change position (B) run against the bearer rings. 9. The device according to one or more of claims 5 to 8, characterized in that the locking device ( 10 ) has a fixed to the axis ( 3 ) first stop ( 15 ) which in a vertical position of the magazine ( 1 ) a second stop ( 16 ) is present, which is firmly connected to the displaceable rail ( 8 ) and a tilting of the top of the magazine ( 1 ) in the direction of the printing unit ( 4 ) prevents a pivotable on the displaceable rail ( 8 ) Lever ( 17 ) with pawl ( 18 ) on the other side of the first stop ( 15 ) and that a locking cylinder ( 19 ) is attached to the sliding rail ( 8 ) through which the pivotable lever ( 17 ) with pawl ( 18 ) can be disengaged and engaged. 10. The device according to one or more of claims 4 to 9, characterized in that the latch ( 6 ) on a fixed part in the uppermost region of the fixed rail ( 9 ) mounted pivotable latch lever ( 20 ) on a spring ( 21 ) is pressed against a stop ( 22 ) and has a slope ( 23 ) and a recess ( 24 ), the pawl lever ( 20 ) by means of the slope ( 23 ) by means of the movable rail ( 8 ) connected to locks ( 25 , 26 ) can be pushed back and the spring ( 21 ) presses the pawl lever ( 20 ) after passing over the slope ( 23 ) by receiving a lock ( 25 or 26 ) in the recess ( 24 ) against the stop ( 22 ) such that the pawl lever ( 20 ) by a Ent release cylinder ( 27 ) can be released and that the release cylinder ( 27 ) simultaneously brings an upper stop ( 28 ) for the locks ( 24 or 25 ) into and out of engagement. 11. The device according to claim 10, characterized in that a first lock ( 25 ) at the lower end of the displaceable rail ( 8 ) is angeord net and the vertical locking of the magazine ( 1 ) in the service position (C). 12. The apparatus according to claim 10 or 11, characterized in that a second lock ( 26 ) is arranged at the location of the displaceable rail ( 8 ), the opposite in the plate changing position (B) of the locking gel ( 6 ). 13. The device according to one or more of claims 1 to 12, characterized in that the lifting cylinder ( 12 ), the pivot cylinder ( 14 ), the Ar locking cylinder ( 19 ) and the unlatching cylinder ( 27 ) are pneumatic cylinders. 14. The device according to one or more of claims 1 to 13, characterized in that fixed, vertically extending racks ( 40 , 40 ') are arranged on both sides of the magazine ( 1 ) that in the racks ( 40 , 40 ' ) through a connecting shaft ( 42 ) connected gears ( 41 , 41 ') and that the connecting shaft ( 42 ) through a bearing ( 43 ) with the magazine ( 1 ) is connected. 15. The apparatus according to claim 14, characterized in that the toothed racks ( 40 , 40 ') with the fixed rails ( 9 , 9 ') are connected.