SU1202900A1 - Arrangement for controlling folding valves of folding apparatus cylinder in rotary printing press - Google Patents

Abstract

A rotating folding cylinder (1) carries an odd number of equidistantly spaced pairs (I-III) of folding blades (8, 10), which are actuated by formations (47, 50) on two rotating cams (7, 9). Trailing blades (8) are actuated by cam (7) when a cam formation and a set of blades coincide at product entraining station (A) and leading blades (10) are actuated by cam (9) at a product discharge station (B) or (C). The cams rotate in the same direction as the cylinder, at a speed ratio of 3:2 where there are three sets of blades and two sets of actuating formations and at other speed ratios for other arrangements. <IMAGE>

Description

2. The appliance according to claim 1., characterized in that each disc cam consists of two discs flattened one relative to the other in the axial direction, one of which has a profile 59, part of which 60 has a lower groove 61 increased by the maximum angle it has

and the other disc has a profile of 62, with the discs being adjustable.

3. The tool according to claim 1, dt is a distinctive item that the drive includes gear 29, a gear 28 in contact with it, which interacts with disk cam. The invention relates to a tool for controlling the folding valves of the valve cylinder of the folding device of rotary printing machines with an odd number of pairs Fold the valves, the rotary folding valves of which are actuated by means of disc cams.

Often, products made by assisting the knife and valve cylinders of the folder, the first transverse fold, receive a second longitudinal fold, which is also called the third fold. Since the working speed of the device in the presence of the third fold is limited, in order to fully utilize the productivity of the rotary machine with this kind of product, the latter is distributed into two such devices.

A known method is in the presence of a valve cylinder of a folder, having an odd number of pairs of folding valves, which consists in removing the product in one place and distributing it through a controlled arrow to two taping sheets (conductive systems, connected, for example, each with one device for the third fold .

The disadvantage of this method is the lack of the ability to bring down the lower tape sheet: it is quite close to the arrow

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Cams 7 and 9 by means of intermediate wheels 23, 22, 11 and 12 connected to each other by a shaft 13, and a valve cylinder cogger 44 in contact with gear 28, a carrier shaft 24, a cylindrical body 26 mounted thereon with sheet guide elements 25, gear 33 , with gear. 44 interacts with gear 33, having oppositely inclined oblique teeth, and a double gear wheel 36, parts 34 and 35 of which have oblique teeth in contact with corresponding gears 28 and 33.

so that in the transmission zone between the valve cylinder of the folding machine and the strip sheet conductor system, ensure the exact direction of production.

In addition, access to this area is very difficult, which is especially true in the case of a blockage.

There are also problems in controlling the folding valves of high-speed rotary printing presses. Contact rollers moving along fixed cams, as well as connecting them with rocker arm folding valves, due to high relative speed between contact cams and disk cams are subject to high dynamic load. Consequence of this

The turbulent running of the contact rollers, the increasing occurrence of noise, and the high wear of the gears are disturbed.

To reduce the relative speed between the disk cam and the contact roller, according to the German patent number 2316227, cl. 15 E 1/08, publ. 1974 disc diameter

cam reduced. However, unlike traditional solutions with a valve mounted on one end on the bearings in the valve cylinder of the folder and a bearing roller at the other end

Additional transmission elements, for example pushers. This leads to an increase in the inertia forces of the transmission mechanism and an increase in the number of hinge points and guides for the transmission elements, which, as a result of increased wear and inaccuracy in the transmission of motion, negatively affects the performance of the folder.

The purpose of the invention is to improve the reliability of the operation of the device for controlling the folding valves of the cylinder of the folding device in rotary printing machines with an odd number of pairs of folding valves, rotary folding valves of which are driven by circular cams, and increasing the performance of the folding machine.

The invention is based on the task of reliably operating and at high speed of the machine, dividing the product flow after the valve-cylinder of the folding machine and reducing the dynamic load — as well as the wear of the device for controlling the folding valves, in particular the contact rollers and connecting them with the transfer folding valves. items.

The goal is achieved by the fact that in the device for controlling the folding valves of the cylinder of the folding device in rotary printing machines, there is an odd number of pairwise folding folding valves arranged in pairs, each of which is connected to a corresponding lever supporting a pin roller mounted on it, which rests on a corresponding disk cam , the output section of the product and the drive, each disk cam has a notch 56, a lifting section 54 and a control zone 58 and is mounted on the shaft 2 valve cylinder of the folding device 1 with the possibility of rotation and connected with the driver. the contact roller 20 is installed with the possibility of interaction with the control zone of the corresponding disk cam 7 or 9 at the production receiving site, and the contact roller 21 is installed with the possibility of interaction at one of two possible output points of the production.

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In addition, each disk cam consists of two axially displaced disks, one of which are

5 has a profile 59, part 60 of which has a lower groove 61 maximally enlarged by the angle d, and the other disk has a profile 62, and the disks are adjustable.

10 In addition, the actuator includes a gear 29, a gear 28 in contact with it, which interacts with the disc cams 7 and 9 by means of shaft connected between them

) 5 13 intermediate 1x wheels 23, 22, 11 and 12 and gear 44 of the valve cylinder in contact with the bristles 28, bearing shaft 24, cylindrical body 26 mounted on it with sheet 20 guide elements 25, gear 33, while gear 44 interacts with gear 33, with oblique inclined teeth, and a double gear wheel

25 to 36, parts 34 and 35 of which have oblique teeth in contact with the corresponding gears 28 and 33.

FIG. 1 shows the valve cylinder of the rebate with a partial

, Q image of the drive of the cylinder of the rebate and cam cams for controlling the folding valves, longitudinal section; FIG. 2 - knife cylinder of the folder with the image of its drive connection

 with the valve cylinder of the folder,. longitudinal section; in fig. 3 - valve cylinder of the folding device with three biased friends. With respect to each other, 120 pairs of folding valves and with the possibility of outputting products in two different places, side view; in fig. 4-valve cylinder of the folding device and partial image of the drive of the cylinder of the folding device and disk cams for controlling the folding valves with the possibility of variation of output of the product, longitudinal section, figure 5 shows the valve of the folding device with three folding valves that are displaced relative to each other by 120 pairs of folding valves with the possibility Variations of output, side view, in FIG. 6 - the same, with the output of products in only one place.

Folding cylinder valve 1 with its shaft 2 on both sides 40

45

50

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Nah is installed on bearings in the side walls 3 and 4 of the folder.

On both sides of the valve cylinder of the folder 1 on its shaft 2 it is pivotally mounted to one gear 5 and 6, while the gear 5 located on the right side is rigidly screwed to the disk cam 7 to control those who fall behind in the direction of rotation of the valve cylinder of the folder 1. action only when receiving production -A (FIG. 3) folding valves 8, and located on the left side gear 6 is screwed to the disk cam 9 to control leading, driven only when outputting B and C (Fig. 3) folding folder valves 10.

Gears 5 and 6 (Fig. &Quot; 1) are meshed with each of one of the intermediate wheels 11. or 12, which are on the through-mounted shaft 13 mounted on bearings in the side walls 3 and 4 of the folding machine.

Curves 14 and 15 (Fig. 3) of the disk cams 7 and 9 (Fig. 1) are made in the form of cam grooves 16 and 17, which are engaged with one contact roller 20 or 21, which is pivotally mounted on a rigidly connected to a folding valve. 8 and 10 to the lever of the valves 18 and 19. In Fig. 1, the levers of the valves 18, and 19 are shown in expanded form, and the contact rollers 20 and 21 are in an out of engagement position with the cam grooves 16 and 17.

Intermediate wheel 11 through two other intermediate wheels 22 and 23 (Fig. 1) is connected to a shaft 24 installed on a passage from the side wall 3 to the side wall 4 of the folder, carrying the sheet-guiding elements 25 of the cylindrical body 26 of the blade cylinder of the machine 27, gear 28 (Fig. 2), which is driven by the drive gear 29. of the folder.

The shaft 24 is pivotally mounted on a bearing in the side wall 3 of a hollow shaft 30 carrying folding knives 31 of the cylindrical body 32 of the knife cylinder of the folder 27, at its outer end there is a gear 33 of the same size as

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gear 28, having oblique teeth with opposite inclination (Fig. 2). Both coaxially located gears 28 and 33 are engaged with each of the teeth 34 and 35 of the double gear 36, which is mounted on bearings in the side wall 3 of the folder axle 37, 10 and movable in the axial direction through a lead 38 by means of a crown 39, which is screwed to the side wall 3, and which has a handwheel 40 on its front side (5 fingers with a thread 41. Parts 34 and 35 of the double gear wheel have oblique teeth corresponding to gear 28 or gear that engages with them gear 28 or 33 Me do krsh1koy

20 39 and with the handwheel 40 there is a threaded ring 43, which serves to prevent self-turning of a finger with a thread 41 and having a handle 42.

25 The gear 33 is also meshed with the gear 44 mounted on the shaft 2 (FIG. 1) to drive the valve cylinder of the folder.

0 The valve cylinder of the folding machine (Fig. 3) has three pairs of folding valves I, II and III displaced relative to each other by 120 pairs. . The disk cams 7 and 9 rotate in a ratio of 3: 2 to the valve cylinder of the folder. For this, the drive linkages between the valve cylinder of the folder and the cam cams 7 and 9 of the wheels have a corresponding geometrical gradation.

The cam 14 has two equally spaced ones, i.e. 180 ° offset zones 47, each with one lift 45 and one trigger 46. The cam 15 also has two zones 50 and 50 each equipped with one lift 48 and one trigger 49, and the trigger zone 50 is Compared with the location of the cam 14, it is shifted by an angle L in the direction opposite to the direction of rotation of the cam 15. The respective actuation zones 50 are activated with the cam rotating faster than the valve cylinder of the folder.

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shifted by the angle pc in the direction opposite to the direction of rotation of the cam 15.

Circular cams 7 and 9 are installed so that in any case (Fig. 3) receiving products from the knife cylinder of the folding device 27 occurs at point A with simultaneous transverse folding of the product as a result of folding the folding knife 31 with the folding valve 8 and 10 of the folding machine 1, moreover, the previously open, lagging folding valve 8 seizes production, i.e. closes while the advance folding valve 10 remains closed during the whole process. In order to output products 8 and C, only the leading folding valve 10 opens in two places in succession, while the lagging folding valve 8 remains closed (Fig. 3). In the first of these cases, the contact roller 20 for activating the lagging folding valve 8 is in the lower position of the actuation zone 47 of the cam 14, and the contact roller 21 for activating the advance folding valve 10 is in the upper groove 55 of the cam 15, While in the second case, on the contrary, the contact roller 20 is in the upper groove 56 of cam 14, and the contact roller 21 is in the lower position of cam actuation zone 50 or 50 15. Both points for outputting output 6 and C from the valve cylinder 1 one folding jaw are offset relative to each other by an angle | and between the angles and depending on the number B of the zones of actuation of the cam 15 for controlling the forward folding valves 10 is really a mathematical ratio

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FIG. 3 illustrates the implementation of the transfer of products at point A with simultaneous transverse folding from the knife cylinder of the folding device 27 to a pair of folding valves of the valve cylinder of the folding device 1, and at the point and - output of the folded products from the pair

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folding valves 11 to the webbing sheet 51 system. A pair of folding valves III already at point C is outputting folded products to the plate webbing system 52. Thus, pairs of folding valves I, II and III continuously output one by one times one unit of production at point B or C.

When withdrawing products from the collection, depending on which parts of the function of the collector-cylinder of the knife cylinder

Five folding machines 27 have a double overlay, all units of production are output either at point B or at point C.

In order to output the products, the upper tape sheet transport system 51 has a controllable output ledge 53, and the lower tape sheet transport system 52 has an uncontrollable output ledge 54. Trampleous sheet transport systems are connected, for example, each with one. him the third fold. The drive for the valve and knife cylinders of the rebate (Figs. 1 and 2) has the advantage that shifting of the fold is possible independent of it for disk cams 7 and 9. After this loosening of the threaded ring 43, the double gear wheel 36 is moved by the handwheel 40 in the axial direction. Due to the described relationships, they are marked in circles in FIG. The 1 and 2 tilts of the oblique gears 28 and 33 and the double gear 36 position the gear 28, including the cylindrical body 26 of the blade cylinder of the rebate 27, which also carries the sheet-guiding elements 25, and the disk cams 7 and 9 connected to the gear 28 via intermediate wheels 23, 22, 11 and 12, remains unchanged, while gear 33,; including the folding knives, the cylindrical t-body 32, the knife cylinder of the folder 27, and the gear 44 for driving the valve cylinder of the folding device 1 chenie.

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It is also possible to drive disk cams 7 and 9 directly from the drive of the folder by means of steps

cylindrical or bevel gears.

Variants of the present invention, which allow the variation of two output points of production B and C within the folder, are shown in FIG. 4-6. In this case, compared with FIG. 1-3, the following technical changes have been made.

A cam disc for actuating the advanced folding valve W consists of two axially displaced discs (.Fig. 4), one of which has a profile 59, part of which 60 has an increased angle a (, lower groove 61, and the other disk has a profile 62, which serves to vary the coating of this enlarged side zone 60 on the side (Fig. 5). The disk 58 is mounted on the disk 57 in such a way that it is possible to turn it or fix it to the desired position by means of a bolted connection (Fig. 4). By

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Both disks 59 and 62 move one of the contact rollers 63 or 64, respectively, the latter being arranged in a row, each on one 5th axis attached to the lever of the valve 19 to actuate the advance folding valve 10. After loosening the bolted connections, it is possible by mutual

10, turning both the disks 57 and 58 and the corresponding change of the actuation zone 60 to set any angle within the range dal l ax (fig. 5), resulting in mutual

15, the location of the two output points B and C, i.e. the angle θ / 3, varies in accordance with the indicated functional ratio.

A joint change is also possible.

20 places for output B and C at a constant angle / 3. To do this, it is necessary to jointly rotate the disks 57 and 58 relative to the brush 6 (Fig. 4). Similarly the case

25 is also the case with a disk cam 9 (FIG. 1).

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Claims (3)

1. DEVICE FOR CONTROL OF THE FOLDING VALVES OF THE FOLDER CYLINDER IN ROTARY PRINTING MACHINES, containing the receiving section of the product, an odd number of rotary folding valves located in pairs, each of which is connected to a corresponding lever carrying a contact disk mounted on it, the contact roller supporting products and actuator, characterized in that each disk cam has a recess 56, a lift section 54 and a control zone 58, and a valve is mounted on the shaft 2 of the cylinder of the folding device 1 with the possibility of rotation and connected with the drive, while the contact roller 2Q is installed with the possibility of interaction with the control zone of the corresponding disk cam 7 or 9 on the receiving area, and the contact roller 21. is installed with the possibility of interaction on one of two possible sections output products. 2. The device according to claim 1., characterized in that each disk cam consists of two disks displaced axially from one another * one of which has a profile 59, part of which 60 has a lower groove 61 maximally increased by an angle wb, and the other the disk has a profile of 62, and the disks are adjustable. 3. The device according to claim 1, characterized in that the drive includes a gear 29, a gear 28 in contact with it, which interacts with the disk cams 7 and 9 through the intermediate wheels 23, 22, 11 and 12 connected to each other by the shaft 13 and the gear 44 of the valve cylinder in contact with the gear 28, the bearing shaft 24, • a cylindrical body 26 mounted on it with leaf guiding elements 25, the gear 33, while the gear. 44 interacts with a gear 33 having oblique teeth with an opposite inclination, and a double gear 36, parts 34 and 35 of which have oblique teeth in contact with corresponding gears 28 and 33.