DE3045187A1 - DEVICE FOR CONTROLLING THE FOLDING VALVES OF A FOLDING VALVE CYLINDER - Google Patents

Description

"Werner Lamberz ^M Leipzig TFS Fr / r

P 125

Device for controlling the jaws of a jaw cylinder

Field of application of the invention:

The invention relates to a device for controlling the jaws of a jaw cylinder for folders of rotary printing machines with an odd one Number of jaw pairs whose pivoting jaws are actuated by cam disks.

Characteristics of the known technical solutions:

It is often necessary that the products according to the in known way through the interaction of folding knife and jaw cylinder formed first transverse fold a 2nd longitudinal fold, also called 3rd fold, obtained. Since the operating speed of the device for the 3rd fold is limited, are often used to improve the performance of the rotary press To use the products to the fullest possible extent split between two of these devices.

In the case of a jaw cylinder equipped with an odd number of jaw pairs, it is known that To deliver products at one point and then via a controlled switch to two, for example with each a device for the 3rd fold to divide connected ribbon cables. The disadvantage here is that as a rule

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the lower ribbon line can not be brought so far to the switch that the products also in the The transfer area between the jaw cylinder and the strip line can be guided precisely. In addition, the Accessibility in this area is severely impaired, which is particularly noticeable in the case of blockers.

Irrespective of this, problems also arise when controlling the folding jaws of high-speed reddening printing machines. The cam rollers running on fixed curves as well as those with the folding jaws connecting rocker arms are subject to a high dynamic load due to a high relative speed between cam rollers and cam disks. Restless running of the cam rollers as well as rising Noise development and high wear of the gearboxes mechanisms are the result.

In order to reduce the relative speed between the cam disc and cam roller, according to OE-PS 633 756 and DE-PS 2 316 227 the diameter of the cure venecheibe reduced in size. This measure requires every but compared to the conventional solutions with a mounted at one end in the jaw cylinder and at the other end the cam roller bearing rocker arm additional transmission members, z. B. plunger. So is inevitably an increase in the inertia forces of the gear mechanism and a larger number of articulation points and guides for the transmission links are connected, resulting in an increase in the performance of the folder due to increasing wear and tear and poor movement

Transmission has a negative effect. Aim of the ** invention:

The aim of the invention is to improve the functional reliability of a device for controlling the folding jaws of a folding jaw

cylinder for folders of rotary printing machines with an odd number of jaw pairs, whose pivoting jaws operated by cam disks under the aspect of an increase in the performance of the folder.

Essence of the invention:

The invention is based on the object of providing a folding apparatus of this type, even at high machine speeds. The ability to find a functionally reliable, universally applicable solution for dividing the product flow after the jaw cylinder and the dynamic load and wear of the device for controlling the Folding jaws, in particular the cam rollers and the transmission links connecting them to the folding jaws to reduce compared to the known solutions.

For this purpose, according to the invention, the

The folding jaws that follow the folding jaws can only be actuated when the product is taken over and the leading folding jaws can only be actuated when the product is dispensed at two points, each by a cam disc rotating in the direction of rotation of the folding jaw cylinder Speed to that of the jaw cylinder in a ratio of 2: 3 or 4: 3 for one with three, 4: 5 or 6: 5 with one with five and 6: 7 or 8: 7 with one with seven pairs of jaws distributed equally spaced around the circumference of the jaw cylinder are stepped, and the curves of the cams in said Order with three pairs of folding jaws 2 or 4, at five 4 or 6 and seven 6 or 8 each equipped with an ascent and descent, at the curve for Control of the product takeover at the same distance

have arranged actuation zones and in the curve for controlling the product delivery with respect to the curve to control the product transfer every second actuation

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gungezone as a function of the number b of the actuation zones of the curve and the two places for the product delivery including angle ^ S at opposite the jaw cylinder faster revolving curve opposite to the ear direction and opposite the Folding jaw cylinder slowly revolving curve in the direction of rotation of which is offset by an angle qC «^.

* ^H The solution allows for one with an odd Number of jaw pairs fitted jaw cylinders deliver a product to two locations in the frame the spatial conditions within the folder can be defined as required. This enables a functionally reliable division of the product flow. The two ribbon cables can be optimally arranged to the switch, so that the management of the products in this area is improved. Due to the higher functional reliability the performance of the folder can be increased. The accessibility to the switches can be made essential make it cheaper.

The two substreams can then each work one at a reduced speed via the ribbon lines the device for the 3, fold are fed.

As a further advantage, eich is constantly reducing rotating cams the relative speed between them and the cam rollers running on them. There are favorable conditions for a Increase in performance due to a decrease in the dynamic load on the device for controlling the folding jaws. So the gear mechanisms are a long way off subject to less wear, and the functional reliability of the device is increased. In addition, the noise generated by the cam rollers is reduced. Thus, with reference to the above-mentioned upper »Settlement ratios between the cam and the folding jaw pen cylinder the speed of the cam roller at three

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Folding jaw pairs 1/2 or 1/4, with five 1/4 or 1/6 and at seven 1/6 or 1/8 the speed of a cam roller rolling on a fixed curve.

The solution principle can also be used advantageously, if different print benefits are separated after the 2nd fold (1st cross fold) - possibly also laid out above the 3rd fold should be.

In order to vary the two points for the product delivery, it is advantageous if, according to the invention, the cam disc for actuating the leading folding jaws consists of two cam bodies axially offset from one another, one of which has a cam, every second actuation zone of which has a lower detent enlarged by the angle δ6 max has, and the other is equipped with a variable lateral cover of this actuation zone serving curve, as well as the two cam bodies are adjustable and a cam roller runs on each of their curves, which are each arranged next to one another on an axis attached to a roller lever for actuating a leading folding jaw . By turning the two cam bodies accordingly, every second actuation zone can be varied by any angle O * OC »CC max.

geb changed according to the mentioned relationship oC = / r to each other. In the borderline case OC = 0, the product is only released at one point. The variation of the points for the product delivery within the folder offers great advantages for a low-effort production changeover of the folder equipped according to the invention - z. B. instead of 2x3. Fold, direct delivery after the 2nd fold - or for the subsequent conversion of a conventional folder in case of changed production conditions due to the optimal adaptability to the available space.

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30A5187

An advantageous variant of the solution for driving the

There is cam disks for controlling the folding jaws in that, according to the invention, a gear connected to the drive of the folder with one on one Shaft of a curved guide element bearing cylinder body of a folding knife cylinder attached gear is in engagement, the upper several intermediate wheels, two of which are arranged on one side of the folder and connected to each other by a shaft, drives both cams to control the jaws and together with a gearwheel of the Folding jaw cylinder engaged, on a hollow shaft of a folding knife which supports the shaft of the cylinder body for the sheet guide elements Cylinder body of the folding knife cylinder attached gear of the same size, but with a splined toothing opposite slope, in an axially displaceable double gear, the partial teeth with one to the respective meshing gear is equipped with matching helical teeth, engages. This drive design has the advantage that a fold adjustment, d. H.

the twisting of the cylinder body of the Falzmeeeer cylinder that carries the folding knives, including the jaw cylinder, with respect to the one that carries the sheet guide elements The cylinder body of the folding knife cylinder is possible without adjusting the cam disks to control the folding jaws is.

Embodiment:

The invention is to be explained in more detail below using an exemplary embodiment. In the associated Drawing show:

Fig. 1: a longitudinal section through a jaw cylinder with partial representation of the drive for the jaw cylinder and the cure discs for controlling the folding jaws 130038/0829

• 40 -

2: a longitudinal section through a folding knife cylinder showing its drive connection with the jaw cylinder 220

3: a side view of the jaw cylinder

with 3 pairs of folding flaps offset by 120 ° to each other and the possibility of product delivery in two different places 225

FIG. 4: a longitudinal section according to FIG. 1 with the possibility of a variable product delivery

Fig. 5: a side view according to FIG. 3 with the possibility » possibility of variable product delivery

6: the special case according to FIG. 5 with the product being dispensed at only one point

in a schematic representation.

According to FIG. 1, the jaw cylinder 1 with its shaft 2 is on both sides in a side wall 3; 4 des Folder stored.

On both sides of the jaw cylinder 1, a gear 5i 6 is rotatably mounted on its shaft 2, of which the gear 5 arranged on the right side fixed to the cam 7 for controlling the direction of rotation of the jaw cylinder 1 trailing, actuated exclusively during product transfer A (Fig. 3) Folding jaws 8 and the gear 6 arranged on the left-hand side with the cam 9 for control the leading folding jaws 10, which are actuated exclusively during product delivery B and C (FIG. 3), are screwed together is.

The gears 5; 6 (Fig. 1) each engage in an intermediate

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AA-

wheel 11; 12 a, which together on a continuous, in the side walls 3; 4 of the folder Sit shaft 13.

The curves 14; 15 (Fig. 3) of the cam disks 7; 9 (Fig. 1) are as groove cams 16; 17 trained in the each one on one with the folding jaw 8; 10 rigidly connected roller lever 18; 19 rotatably mounted cam roller 20; 21 intervenes. In Fig. 1, the roller levers are in the interest of a clearer representation 18; 19 in the rotated position and the cam rollers 20; out of engagement with the groove cams 16; 17 shown.

The intermediate wheel 11 stands above two further intermediate wheels 22; 23 (Fig. 1) with a pass through from the side wall 3 to the rare wall 4 of the folder the shaft 24 of the cylinder body 26 of the folding knife cylinder 27, which carries the sheet guide elements 25, is connected to the toothed wheel 28 (Fig. 2), which is of driven by a gear 29 of the folder drive will.

The hollow shaft 30, which is mounted in the side wall 3, of the cylinder body 32 of the folding knife cylinder 27 carrying the folding knives 31 is rotatably fitted onto the shaft 24, on its outer end a opposite to the gear 28 Gear 33 of the same size, but equipped with a helical toothing of opposite pitch, is seated (Fig. 2). Both gears 28, which are arranged coaxially to one another; 33 engage in each case the corresponding partial toothing 34; 35 of a double gear 36, which is on a Nem in the side wall 3 of the folding device mounted pin 37 sits and a driver 38 with the help one guided in a cover 39 screwed to the side wall 3 and with a handwheel on the end face 40 provided threaded bolt 41 is axially displaceable.

The partial teeth 34; 35 have the respective meshing gear 28; 33 matching helical teeth. Between cover 39 and handwheel 40 1st

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another one of the safeguard against independent rotation the threaded bolt 41 serving, equipped with a hand lever 42 threaded ring 43 is arranged.

The toothed wheel 33 is also still in engagement with the toothed wheel 44, which is fastened on the shaft 2 (FIG. 1), for driving the jaw cylinder 1.

In FIG. 3, the jaw cylinder 1 has three jaw pairs I, II, III offset from one another by 120 °. The cams 7; 9 rotate at a ratio of 3: 2 to the jaw cylinder. For this purpose, the drive connection between the jaw cylinder 1 and the Cams 7; 9 realizing gears correspondingly geometrically graded.

The curve 14 has two actuation zones 47 arranged at the same distance, ie offset by 180 °, each equipped with an ascent 45 and a descent 46. Similarly, the curve 15 also has two actuation zones 50 each equipped with an ascent 48 and a descent 49; 50 ', of which the actuation zone 50 * is offset with respect to the arrangement of the curve 14 by the angle oC opposite to the direction of rotation of the curve 15. In general, the corresponding actuation zones 50 * with the curve rotating faster than the jaw cylinder according to the selected embodiment are opposite to The direction of rotation of the curve, on the other hand, are offset by the angle CC in the direction of rotation of the curve when the curve revolves more slowly than the jaw cylinder.

The cams 7; 9 are set so that in each Case (Fig. 3) at point A the product transfer from the folding fair rzylinde.r 27 with simultaneous transverse folding of the product through the interaction of the folding knife 31 with the folding jaws 8; 10 of the jaw cylinder 1 takes place, but only the previously opened trailing folding flap 8 gripping the product

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operated, ie closed, and the leading folding jaw 10 remains closed during the entire process. On the other hand, for product delivery B, C, only the leading folding flap 10 is opened alternately at two points, while the trailing folding flap θ remains closed in each case (FIG. 3). In the first case, the cam roller 20 for actuating the trailing jaw 8 is in the lower position of the actuation zone 47 of the curve 14 and the cam roller 21 for actuating the leading folding jaw 10 is in the upper detent 55 of the curve 15, while in the second case with the reversal of the The relationship between the cam roller 20 is in the upper detent 56 of the cam 14 and the cam roller 21 is in the lower position of the actuation zone 50 or 50 'of the cam 15. The two points for product delivery B, C from the jaw cylinder 1 are offset from one another by the angle / S, with the following mathematical relationship between the angles oC and A , taking into account the number b of the actuation zones of the curve 15 for controlling the leading jaws 10:

CC-ß ί oC «@ in Fig. 3.
b 2

In Fig. 3 it is shown v / ie at point A the product with simultaneous transverse folding from the folding knife cylinder 27 transferred to the jaw pair I of the jaw cylinder 1 and a folded product at point B. is released from the pair of folding jaws II to the ribbon line 51. The pair of folding jaws III is already in place C a folded product is delivered to the ribbon line 52. The folding jaw pairs I, II, III thus give constantly alternately one product each at position B or C.

When production is collected, depending on which sections of the Folding knife cylinder 27 are double occupied, all products are delivered either at point B or C.

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The upper ribbon line is used for product delivery 51 a controlled diversion tongue 53 and the under © ribbon line 52 a controlled diversion tongue 54 «, The ribbon lines are coupled in a manner not shown, for example, each with a 3rd fold,

The drive illustrated in Figure 1 _e and 2 for the Falzklappen- and Falzniesserzylinder offers the advantage that a change made by unspecified means described herein Falzvereteilung independently of the drive for the cam discs 7; 9 can be done. For this purpose, after loosening the threaded ring 43, the double gearwheel 36 is axially displaced with the aid of the handwheel 40. As a result of the pitch ratios already described and symbolically indicated in a circle in FIGS. 1 and 2, the helical gears for the gears 28; 33 and the double gearwheel 36 remains the position of the gearwheel 28, including the cylinder body 26 of the folding knife cylinder 27 carrying the sheet guide elements 25, as well as the drive connected to the gearwheel 28 for the cam disks 7; 9 via the intermediate gears 23; 22; 11; 12 unchanged, while the gear 33, including the cylinder body 32 of the folding cutter cylinder 27 carrying the folding knives, and the gear 44 for driving the jaw cylinder 1 are rotated by the corresponding amount.

In a departure from the solution shown in FIGS. 1 and 2, a drive for the cam disks 7; 9 directly from Folder drive from spur or bevel gear stages conceivable.

A variant of the solution of the invention, which _{enables a variation of the two points for the product delivery B s} C within the folding apparatus, is shown in FIGS. 4 to 6. Compared to the solution according to FIGS. 1 to 3, the technical means have been changed as follows:

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The cam for actuating the leading folding jaws IO consists of two cam bodies 57 axially offset from one another; 58 (Fig. 4), one of which has a curve 59, every second actuation zone 60 is enlarged by the angle oC max has lower latch 61, and the other with one of the variable side cover of this enlarged Actuation zone 60 serving curve 62 equipped is (Fig. 5). The cam 58 is rotatable and arranged on the cam 57 so that it can be fixed in a desired position by screw connections (FIG. 4). On the two curves 59; 62 each rolls a cam roller 63; 64, each on a roller lever for actuating a leading folding jaw 10 attached axis are arranged side by side.

After the screw connections have been loosened, the two cam bodies 57; 58 and thus a corresponding variation of the actuation zone 60 any angle oC within the range oC max. can be set (FIG. 5), whereby the mutual assignment of the two points for the product delivery B; C, d. h, the angle / S »according to the ge called functional relationship changes.

Of course, the two positions for product delivery B; C can also be changed together at a constant angle li . For this purpose, the cam bodies 57; are rotated together with respect to the gear 6 (Fig. 4). In a figurative sense, this also applies to the cam 9 in FIG. 1.

An adjustment of the two cam bodies 57; 58 at which oCs o is shown in FIG. 6. In this special case, the product is only dispensed at point B. This Use case exists when the products are to be fed together to a further processing station after the 1st transverse fold or are to be laid out directly.

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According to the principle of the invention, the relationships shown in FIGS. 1 to 6 can be transferred accordingly to a jaw cylinder equipped with a different number of jaw pairs. The table below contains an overview of common applications of the invention;

455 Jaws
couples Number of beta «=
activity zones pro
Curve Translation
relationship
Cam;
Falzklo-cyl. angle
for the Ver
sentence of Be
activity
nen 3 2 3 s 2 ß / 2 460 4th 3; 4th / 3/4 5 4th 5: 4 / 3/4 465 6th i j 6 ß / e 7th 6th 7 % 6 β / 6 470 8th 7: 8 ß / s

Dl

- 14 -.

Claims (3)

Invention claim: 1. Device for controlling the folding jaws of a folding jaw cylinder for folders of rotary printing Machines with an odd number of jaw pairs, the pivoting jaws of which are actuated by cams, characterized in that the jaws (8) that follow in the direction of rotation of the jaw cylinder (1) only for the product » Takeover (A) and the forward folding jaws (10) in each case only when the product can be dispensed at two points (B; C) through a cam disc (7; 9) rotating in the direction of rotation of the jaw cylinder (1) can be actuated, the speed of which corresponds to that of the folding jaw cylinder (1) in a ratio of 2: 3 or 4: 3 one with three, 4: 5 or 6: 5 with one with five and 6: 7 or 8: 7 with one with seven in the same The distance between the jaw pairs (I, II, III) distributed over the circumference of the jaw cylinder (1) is stepped, and the curves (14; 15) of the cam disks (7; 9) in the order mentioned for three pairs of folding jaws 2 or 4, with five 4 or 6 and with seven 6 or 8 with an ascent (45; 48) and descent (46; 49) each equipped, at the curve (14) to control the Product takeover have actuation zones (47) arranged at the same distance and at the curve (15) to control the product delivery with respect to the curve (14) to control the product takeover every second Activation zone (50 *) depending on the number b of activation zones of the curve (15) as well as on the the two points for the product delivery (B; C) enclosing angle / 3 in the case of the curve (15) rotating faster than the jaw cylinder (1) opposite to its direction of rotation and opposite the jaw cylinder (1) slower revolving curve (15) in the direction of rotation by an angle is offset. 130038/0629 - 15 - 2. Device according to item 1, characterized in that the cam for actuating the leading The folding jaws (10) consist of two cam bodies (57; 58} which are axially offset from one another, one of which has a curve (59) whose every second actuation zone (60) one enlarged by the angle oC max has lower latch (61), and the other with one of the variable side cover of this Actuating zone (60) serving cam (62) is equipped, as well as the two cam bodies (57; 58) one are adjustable and on their curves (59; 62) each a cam roller (63; 64) runs, each on one attached to a roller lever (19) for actuating a leading folding jaw (10) Axis (65) are arranged side by side. 3. Device according to item 1, characterized in that a gear (29) connected to the drive of the folder with one on a shaft (24) a cylinder bearing sheet guide elements (25) the body (26) of a folding knife cylinder (27) be fixed gear (28) is in engagement, which via several intermediate gears (23; 22; 11; 12), of which two arranged on each side of the folder and connected to one another by a shaft (13) the are, both cam disc (7; 9) for control drives the jaws (8; 10) and, together with a gear (44) of the jaw cylinder (1) in engagement, on a shaft (24) of the cylinder body (26) for the sheet guide elements (25) receiving a hollow shaft (30) Folding knife (31) supporting cylinder body (32) of the folding knife cylinder (27) attached gear (33) same size, but with a helical toothing opposite pitch in an axial shift Bares double gear (36), whose Tel! gears 130038/0629 - 16 - (34; 3ö) nit an intervening to the respective one Gear (28; 33) is fitted with matching helical teeth, engages. - 17 130038/0629