EP0649741B1 - Collecting device on a cutter-collector cylinder of a folding apparatus - Google Patents

Abstract

The invention relates to a device for changing over from collecting operation to non-collecting operation on a cutting/collecting cylinder (4) of a folding apparatus for rotary printing machines, which can be changed over from collecting operation to non-collecting operation and vice versa. At least one row of puncture needles (7) is accommodated in the cutting/collecting cylinder (4), it being possible for the mounting shaft (9) of said puncture needles to be activated via a cam roller (41) which rolls in a cam body (27). The cam body (27) is accommodated adjustably in the housing (25) of the folding apparatus such that it is located opposite an end side of the cutting/collecting cylinder (4). The invention is distinguished in that the circumferential-speed ratio of cutting/collecting cylinder (4) to cam body (27) can be changed by a coaxially movable, second force-transmission element (34) which passes through a first force-transmission element (29) with at least two force-introduction points (29a, 29b). <IMAGE>

Description

The invention relates to a device for converting Collection on non-collection operation on one Cutting / collecting cylinder of a folder for Rotary printing press, which from collecting operation on Non-collective operation and vice versa is redistributable and in which includes at least a number of punctures, whose bearing shaft can be activated via a cam roller, that rolls on a curve body, the one end of the Cutting / collecting cylinder opposite to the housing of the The folder is adjustable.

From the prior art, JP-A-63 185 777 is a Folding device for a rotary printing press is known. By An attachable hand crank is rotatable on a shaft which several clutches are arranged. One of these Clutches are disengaged, after which by pressing the Hand crank the phase position of a control curve can be changed. After the adjustment has been made, the coupling is again indented. This device collects Copies on a separate collecting cylinder that is not simultaneously performs a cutting function.

Another folder known from the prior art according to DE 38 28 372 A1 comprises a multi-sized Collecting cylinder. There are several in this Actuators added to their two Control ends facing two each on a common Have axis rollers arranged side by side.

Between the two related to the collecting cylinder a cam carrier is arranged, which takes up several cams, which are active and one Passive position can be brought. In the active position of the cams prevent this by supporting one of the two sensing rollers each actuator that a folding process is performed. In the passive position of the cams, however, the feeler rollers can control the tax sinks of each Follow the control curve and trigger folding or puncturing processes. The large one emerging from the figures of DE 38 28 372 A1 However, expenditure on equipment is only required for large intaglio printing machines justified that up to eight etchings on the circumference of a Printing unit cylinder can have. With smaller ones The mechanical effort is not justifiable for folders.

US-PS 3,865,361 discloses a folding cylinder on the A curve is recorded in the front, in which several Treads are included. Roll in these treads next to each other arranged rolls and move Puncture waves accordingly. A changeover on the folding cylinder from the collection mode to the non-collection mode is done by axially shifting the curve on the common High point of the treads. For cost reasons it is important today the production of curves with different treads, which also have to be hardened differently, if possible to avoid. The axial displacement of a curve receiving structure carries the risk that by itself game setting during operation Risk of canting of the recorded on the shaft Construction is constantly increasing. This makes using one displaceable curve at least problematic.

Finally, DE 17 61 134 discloses one of simple operation folding device, convertible to collective operation Rotary printing machines with a driven folding cylinder. This configuration is in a loop trained cam groove of a control disc several on the diametrically opposite inward Curved ledges embedded. Furthermore, a Gear transmission provided, with which the Speed ratio of the speed of the control disc in relation is adjustable to the speed of the folding cylinder. Of the the decisive disadvantage of this folding device lies in the extensive dimensioning of the gear transmission, which is an unacceptably high number of straight teeth Includes gears that negatively affect manufacturing costs influence.

JP-A-47 51740 relates to a device for delaying the Fold. There is a fixation shaft as well as a puncture shaft a folding cylinder provided, the puncture wave of a drive that is also driven in a Non-drive position is adjustable. About one on one The end face of the folding cylinder is provided as a guide a spur gear out of engagement with another drive gear bringable.

Starting from the outlined constructions of the stand of Technology, the invention has for its object a Device for converting from collecting to non-collecting operation to improve on cutting / collecting cylinders so that on minimal space with few components a high one Operational safety is guaranteed.

According to the invention, this object is achieved according to the features of Claim 1 solved.

In the solution according to the invention, it is particularly advantageous that by nested arrangement of the Power transmission elements created a compact unit could be, where only a power transmission element undergoes an axial displacement. This allows the mechanical effort extremely low and Keep installation space requirements very low.

In a further embodiment of the invention lying thought is provided, the second Power transmission element on a shaft extension of the To design cutting / collecting cylinder axially displaceable. In addition, the first power transmission element comprises a first Force introduction point, which is designed as an external toothing is. There is also a in the first power transmission element second force introduction point designed as an internal toothing. Because the cam body on the first power transmission element is attached, a rotational movement in the Curve body to be initiated. The first is Power transmission element in bearings in a side wall bushing rotatably received and at the same time on a bearing on Wave process added. This makes it stable Realized three-point bearing, which has the consequence that mechanical load peaks can be safely absorbed can. The three-point bearing also prevents the first power transmission element based on its transverse axis on the shaft extension.

Parallel to the shaft extension is in a side wall bush a stub shaft mounted on which a first and a second interconnected teeth are included. The second power transmission element is with the first Gearing can be brought into engagement, whereby the second Gearing the drive in the external gearing of the first Force transmission element is initiated. In this Operating position is a reduction in the speed of the Curve body for the speed of the cutting / collecting cylinder from 1: 2 reached. Accordingly, the cam body rotates only half as much fast as the cutting / collecting cylinder so that its Bearing shaft of the punctures only every second revolution of the cutting / collecting cylinder is activated.

The second power transmission element, however, with the Internal teeth of the first power transmission element in Brought into engagement, the cam body and the rotate Circumferential surface of the cutting / collecting cylinder with the same Speed. Are previously on the outer surface of the Cutting / collecting cylinder attached marking and the housing-fixed marking has been brought into line and if the tooth mesh is made afterwards, they remain Punctures during the rotation of the cylinder in their retracted position; the said cylinder then acts only as a cutting cylinder.

On the axis of the collecting device are the Operating positions of the second power transmission element appropriate locking grooves executed to the second Power transmission element in its working positions lock.

The invention is illustrated below with the aid of a drawing explained in detail.

Fig. 1

den schematischen Aufbau eines Falzapparates samt Schneid-/Sammelzylinder,

Fig. 2

die Funktionsweise des Schneid-/Sammelzylinders im Betriebsmodus "Nicht-Sammeln",

Fig. 3a,b,c

die Funktionsweise des Schneid-/Sammelzylinders im Betriebsmodus "Sammeln",

Fig. 4a,b

den Längsschnitt durch einen Schneid-/Sammelzylinder im Betriebsmodus "Sammeln"

Fig. 5a,b

den Längsschnitt durch einen Schneid-/Sammelzylinder im Betriebsmodus "Nicht-Sammeln"

It shows:

Fig. 1

the schematic structure of a folder including cutting / collecting cylinder,

Fig. 2

the functioning of the cutting / collecting cylinder in the "non-collecting" operating mode,

3a, b, c

the functioning of the cutting / collecting cylinder in the operating mode "collecting",

4a, b

the longitudinal section through a cutting / collecting cylinder in the operating mode "collecting"

5a, b

the longitudinal section through a cutting / collecting cylinder in the "non-collecting" operating mode

Fig. 1 shows the structure of a folder schematically. A via a funnel roller 1 entering a funnel 2 Material web is folded lengthways there. After that the longitudinally folded material web pressed between draw rollers 3 and from there passes into a cylinder gap 19 which between the peripheral surfaces of a cutting / collecting cylinder 4 and one Folding cylinder 5 is formed. The folding cylinder 5 rotates clockwise, the cutting / collecting cylinder 4 against the Clockwise; both cylinders have the same Peripheral speed, the diameter of the Folding cylinder 5 and the cutting / collecting cylinder 4 as 2: 1 behavior.

The cutting / collecting cylinder 4 is provided on its circumference with a cutting knife 6 on the one hand, while on the other hand, punctures 7 are embedded in the outer surface of the cutting / collecting cylinder 4 in the immediate vicinity of the cutting knife 6. The punctures 7 consist of puncture rods 21 arranged next to one another, which are received on a bearing shaft 9 by means of puncture levers 8. The folding cylinder 5, on the other hand, with a double diameter, is equipped with folding knife shafts 10 located opposite one another, each of which accommodates a folding knife 11. Offset about 90 ^o on the circumference of the folding cylinder 1, cutter bars 12 made of rubber and two rows of punctures 13 are added. These in turn are located at the ends of puncture levers 14, which in turn are mounted on puncture shafts 15.

There is a pair below the folding cylinder 5 Folding rollers 16, between - depending on the operating mode of the Folders - single copies or one on top of the other Copies can be pushed through the folding knife 11. The on these types of cross-folded products are made over a Paddle wheel 17 designed on a delivery belt 18.

In Fig. 2, the operation of the Cutting / collecting cylinder 4 in the "non-collecting" operating mode shown.

The web area 20 entering the cylinder gap 19 becomes of punctures extended from the folding cylinder 5 and held on the circumference of the folding cylinder 5. After half Cylinder rotation of the folding cylinder 5 drive the punctures back into the folding cylinder 5 and the web area 20 becomes by a cut between the cutting knife 6 and cutter bar 12 to a separated copy 20 '. Through a Folding knife 11, which on a folding knife shaft 10 is included, the separated copy 20 'between two folding rollers 16 pushed in and the extended Punctures 13 take an introduced one again Track area 20. Thus, the copy 20 'receives a crosswise to in Hopper 2 produced longitudinal fold extending further fold. Then the copies 20 'get into the pockets of the Paddle wheel 17, from which it on the delivery belt 18th be interpreted. In the production mode outlined here "Not collecting" the punctures 7 are out of function, they remain in the outer surface of the cutting / collecting cylinder 4 retracted.

The mode of operation in the "Collect" operating mode is in the 3a, 3b, 3c.

3a is shown in the Cylinder gap 19 entering - dashed here shown - path area 22 of extended punctures 7 seized on the cutting / collecting cylinder 4. The punctures 13a and 13b of the double-sized folding cylinder 5 remain in it retracted position.

The folding cylinder 5 has in the state shown in FIG. 3b rotated half a turn during the Cutting / collecting cylinder 4 performed an entire revolution Has. Here, the path region 22 shown in dashed lines is completely on the circumference of the cutting / collecting cylinder 4 recorded and is cut after the cut as a copy 22 ' designated. At this point, immediately after the cut the cutting knife 6, drive the punctures 7 that over Puncture levers 8 are received on a bearing shaft 9, back in the circumference of the cutting / collecting cylinder 4 and give thus the copy 22 'free. This will be immediately afterwards together with the newly arriving rail area 23 from extended punctures 13b seized. Through this "Track change" will be the web area 23 and that Copy 22 'one above the other on the circumference of the Folding cylinder 5 fixed until this half a turn executed. At this moment, the web area becomes 23 by cutting the cutting knife 6 with the Knife bar 12 separated. The copies 22 'and 23' fixing punctures 13b drive back into the Folding cylinder 5 before, as can be seen in FIG. 3c, one the folding knife 11 the copies 22 'lying one above the other and 23 'into the gap between the folding rollers 11. With 24 is then in the cylinder gap 19th incoming web area designated in the operating mode "Collect" from extended puncture pins 7 of the Cutting / collecting cylinder 4 is taken.

4a, b is a longitudinal section through a Cutting / collecting cylinder including a detail of the bearing shaft shown.

The cutting / collecting cylinder 4 is driven by a Drive pinion 26 and with a drive shaft Shaft extension 35 transmitted. In a side wall 25 of the Folder is a side wall socket 33 embedded, which the first power transmission element 29 via roller bearings supports. This is also from a rolling bearing on the Shaft 35 of the cutting / collecting cylinder 4 supported. At the cylinder-side end of the first Power transmission element 29 is a cam body 27 attached to the rollers 41 in a curved path 28 records with which the bearing shafts 9 and thus the Punctures 7, 21 can be activated.

A marking 32 fixed to the housing is on the side wall 25 recorded, which with the cylinder mark 36 in Agreement can be brought. Both markings are aligned with each other, the punctures 7 are in the lateral surface of the Cutting / collecting cylinder 4 retracted.

There are two on the first power transmission element 29 Force introduction points 29a, 29b are provided, which as inner or External teeth are executed. On the There is a sliding toothing 34, which represents the second power transmission element. The Sliding toothing 34 is by a lock 30 that on two ring grooves 37, 38 of an actuating shaft 39 act, lockable; by at the end of the shaft extension 35 on the Control shaft 39 recorded handwheel 31 is the Sliding teeth 34 coaxial to the first Power transmission element 29 operable. Parallel to Shaft extension 35 is a in the side wall socket 33 Stub shaft added, on which one with two Teeth 42, 43 provided sleeve is added. The Sliding toothing 34 is both with the toothing 43 as also with the internal toothing 29b of the first Force transmission element 29 to engage while the toothing 42 with the external toothing 29a of the combs first power transmission element 29.

In the state shown in Fig. 4a, the combs Sliding toothing 34 with the toothing 43. This leads the cutting / collecting cylinder 4 the drive in the Toothing 43 a. From this the drive flows over the Tooth 42 with a smaller diameter to the External teeth 29a of the first force transmission element 29 and thus in the curve body 27. By reducing the The toothing 42, 29a rotates the cam body 27 only half as much fast as the cutting / collecting cylinder 4, which makes it Punctures 7 only every second rotation from the Extend the outer surface and therefore every second revolution a copy can be collected on its scope.

5a, b give a longitudinal section through the Cutting / collecting cylinder 4 in the "non-collecting" mode again. The difference to Fig. 4a lies in the other Working position of the sliding toothing 34. Before the changeover to this operating mode will be carried out after Align the marks 32 and 36 the punctures 7 in the Shell surface of the cutting / collecting cylinder 4 retracted. Then the lock 30 is actuated by the handwheel 31 Sliding teeth 34 coaxial to the first Power transmission element 29 moved. In this position is the sliding toothing 34 by the lock 30 and the ring groove 38 locked. Now combs the The sliding teeth 34 are the same as the inner teeth 29b Pitch circle diameter, resulting in a Gear ratio of 1 there. The toothings 42, 43 run along empty, cam body 27 and Cutting / collecting cylinders 4 rotate with the same Circumferential speed, the punctures 7 are therefore not operated, whereby no copies on the scope of the Cutting / collecting cylinder 4 are collected, in contrast to State in Fig. 4a.

It is obvious that according to the principle described other peripheral speed ratios between Cutting / collecting cylinder 4 and cam body 27 realized can be; this depends on the available space as well as the number of rows of punctures on the circumference and the diameter ratios between folding cylinder 5 and Cutting / collecting cylinder 4.

Reference list

1

Funnel roller

2nd

funnel

3rd

Pull roller

4th

Cutting / collecting cylinder

5

Folding cylinder

6

Cutting knife

7

Puncture

8th

Puncture lever

9

Bearing shaft

10th

Folding knife shaft

11

Folding knife

12th

Knife bar

13

Punctures

14

Puncture lever

15

Puncture wave

16

Folding rollers

17th

Paddle wheel

18th

Delivery belt

19th

Cylinder gap

20th

Railway area

20 '

Item ("Don't Collect" mode)

21

Pinpoint

22

Railway area

22 '

Item (collect mode)

23

Railway area

23 '

Item (collect mode)

24th

Railway area

25th

Side wall

26

Drive pinion

27

Cam body

28

Cam track

29

Double toothed sleeve

29a

External teeth

29b

Internal teeth

30th

Interlock

31

Handwheel

32

Marking fixed to the housing

33

Sidewall socket

34

Sliding toothing

35

wave

36

Cylinder marking

37

Ring groove

38

Ring groove

39

Control shaft

40

Roller lever

41

Roller

42

first interlocking

43

second toothing

Claims (12)

1. Device for changing over collecting operation to non-collecting operation on a cutting/collecting cylinder (4) of a folding apparatus for rotary printing machines, which can be changed over from collecting operation to non-collecting operation and vice versa and in which at least one row of puncture needles (7) is accommodated, it being possible for the mounting shaft (9) of said puncture needles to be activated via a cam roller (41) which rolls in a cam body (27) which is accommodated adjustably on the housing (25) of the folding apparatus such that it is located opposite an end side of the cutting/collecting cylinder (4), characterized in that a force-transmission element (29) has an outer force-initiation location (29a) and an inner force-initiation location (29b) and has a coaxially arranged, axially displaceable second force-transmission element (34) passing through it and, on engagement with the inner force-initiation location (29b), drives the cam body (27) at a first relative circumferential speed with respect to the cylinder (4) and, upon engagement with the outer force-initiation location (29a), drives the cam body (27) at a second relative circumferential speed with respect to the cylinder (4).
2. Device according to Claim 1, characterized in that the second force-transmission element (34) can be displaced axially on a shaft continuation (35) of the cutting/collecting cylinder (4).
3. Device according to Claim 1, characterized in that the first force-transmission element (29) comprises a first force-introduction point which is designed as an outer toothing arrangement (29a).
4. Device according to Claim 1, characterized in that the first force-transmission element (29) comprises a second force-introduction point which is designed as an inner toothing arrangement (29b).
5. Device according to Claim 1, characterized in that the cam body (27) is fastened on the first force-transmission element (29).
6. Device according to Claim 1, characterized in that the first force-transmission element (29) is accommodated rotatably in bearings of a side wall bushing (33).
7. Device according to Claim 1, characterized in that the first force-transmission element (29) is mounted rotatably on the shaft continuation (35) by means of a bearing.
8. Device according to Claim 1, characterized in that mounted parallel to the shaft continuation (35) in the side wall bushing (33) is a stub shaft which receives a first toothing arrangement (43) and a second toothing arrangement (42) connected thereto.
9. Device according to the preceding claims, characterized in that the second force-transmission element (34) can be brought into engagement with the first toothing arrangement (43), as a result of which the second toothing arrangement (42) meshes with the outer toothing arrangement (29a) of the first force-transmission element (29).
10. Device according to the preceding claims, characterized in that the second force-transmission element (34) can be brought into engagement with the inner toothing arrangement (29a) of the first force-transmission element (29).
11. Device according to one or more of the preceding claims, characterized in that the second force-transmission element (34) can be locked, in its axial positions on the shaft continuation (35), in latching grooves (37, 38) of an actuating shaft (39).
12. Device according to one or more of the preceding claims, characterized in that a marking (32) on the housing (25) can be made to coincide with a marking (36) on the circumference of the cutting/collecting cylinder (4).

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