DD153473A3 - DEVICE FOR CONTROLLING THE FOLDING FLAPS OF A FOLDING CYLINDER - Google Patents

Abstract

The invention relates to a device for controlling the jaws of a jaw cylinder for folders with an even number of jaw pairs. The aim of the invention is to increase the reliability of such a device under the aspect of increasing the performance of the folder. According to the task is to find an optimal solution for a division of the product flow after the jaw cylinder and to reduce the dynamic load and the wear of the device compared to the known solutions. For this purpose, the trailing in the direction of rotation of the jaw cylinder jaws each only in the Produktuebernahme and the leading jaws are each actuated only in the two possible product delivery by two rotating cams, taking into account the number of Falzklappenpaare the speed of the cam is compared to that of the jaw cylinder is stepped and their curves are equipped with Betetigungszonen, and the two curves for controlling the product delivery are rotated by a certain angle alpha to each other.

Description

VEB Kombinat Polygraph "Werner Lamber" Leipzig

P 12?

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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 presses with an even number of jaw pairs whose pivotable jaws are actuated by cams.

Characteristic of the known technical solutions:

Often it is necessary for the products to be given a second longitudinal fold, also called a "fold", according to the first transverse fold formed in a known manner by the interaction of folding blade and jaw cylinder. Since the operating speed of the device for the 3 * fold is limited, γ / ground often, in order to make fullest use of the capacity of the rotary machine in this type of production, the products are divided into two of these devices.

In a jaw cylinder equipped with an even number of jaw pairs, it is known to deliver the products in one place and subsequently via a controlled one. Divide the switch on two, for example, each with a device for the 3 «fold connected tape lines * The disadvantage here is that in the rule

  the lower ribbon cable does not approach the switch so far?

can be performed »that the products are also performed exactly in the transfer area between jaw cylinder and ribbon cable. In addition, the accessibility in this area is severely impaired, which has a negative impact on blockers in particular. ·

In addition, there are also problems in controlling the jaws of high-speed rotary printing machines. The cam rollers running on fixed curves and the rocker arms connecting them with the jaws are subjected to a great dynamic load due to a high relative speed between cam rollers and cam disks Cam followers as well as increasing noise development and high wear of gear mechanisms are the result «

In order to reduce the relative speed between the cam and cam roller, one has according to DE-PS 633 756 and DE-PS 2 316 227 reduced the diameter of the cam. However, this measure requires over the conventional solutions with a mounted at one end in the jaw cylinder and at the other end of the cam roller bearing rocker additional transmission links, z, B. plunger. This inevitably causes an increase in the Mas'senkräfte the Getriebemechanisraus and a greater number of hinge points and guides for the transmission links _s which has a negative effect on an increase in performance of the folder due to increasing wear and inexact Bewegungs «transmission.

Object of the invention:

The aim of the invention is the functional reliability of a device for controlling the Faizklappen a folding jaw

pens for folders of rotary presses with an even number of pairs of jaws _? whose hinged jaws are actuated by cams, increase under your aspect of increasing the performance of the folder au _β . ·

Vtfesen the invention? -

The invention is based on the object ₃ for such folders a functionally reliable, universally applicable solution for dividing the product flow after the jaw cylinder even at high speed and the dynamic load and the wear of the device for controlling the jaws, in particular the cam rollers and the 'se' with the jaws connecting transmission links compared to the known solutions to reduce »

For this purpose, according to the invention in the direction of rotation of the FaIzklappenzylinders trailing jaws each only in the product takeover by a cam and the leading Falsklappen. Each only possible in two places possible product delivery by two cam actuated all cam rotate in the direction of rotation of the jaw cylinder are the leading jaws ,

with respect to their order on the circumference of the jaw cylinder alternately assigned one of the two provided for them cams, the speed of all cams to that of the jaw cylinder in the ratio 2: 3 at one with two, 4-: 3 or 4: 5 at a with four and ξ> : 5 or 6: 7, with a pair of jaw pairs distributed equidistantly around the circumference of the jaw cylinder, the curves of the three cams in the order given have two jaw pairs 3 "at four 3 or 5 and at six 5 or 7 uniformly distributed actuating zones _f and each having a rise and fall, and are the two cams for controlling the leading flaps, taking into account the number b of beta

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zones per curve as well as from the angle (^) enclosing zv / ei sites for product dispensing

105.-opposite the jaw cylinder faster rotating cam opposite to the direction of rotation and with respect to the jaw cylinder slower rotating cam in the direction of rotation by an angle qL - \ ^ twisted to each other,

The solution allows for a jaw cylinder equipped with an even number of jaw pairs a product delivery at two points, which can be arbitrarily defined within the framework of the spatial conditions within the folder "This allows a functionally reliable division of the product flow",

The two ribbon cables can be arranged optimally to the switch so that the guidance of the products in this area is improved. Due to the higher reliability, the performance of the FaIs-. apparatuses are increased. The accessibility to the switches can be made much cheaper.

The two partial streams can subsequently be fed via the ribbon cables to a respective device operating at reduced speed for the 3 × fold.

Another advantage is reduced by the 'constantly circulating. Cams the relative speed between them and the running on them cam rollers. It results in favorable conditions for an increase in performance due to decrease in the dynamic load of the device for controlling the jaws. Thus, the gear mechanisms are subject to a much lower wear, and the reliability of the device is increased

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reduces the GerausChentwicklung the cam rollers _o

Thus, referring to the above-mentioned gear ratios between the cam and the jaw cylinder, the speed of the cam follower is two-fold for 1/3 _s at four 1/3 or 1/5 and at six 1/5 or 1/7 the speed of one on a fixed curve rolling cam follower.

Advantageously, also the principle of the solution when different pressure benefits after two _e fold (1 _e transverse fold) can be applied separately - possibly _e should be designed on the 3 · folds "

To vary the two points for the product delivery, it is advantageous if, according to the invention, the two cams for actuating the leading jaws are arranged side by side on the shaft of the jaw cylinder and rotated relative to one another with scissors.

1.60 benverbindungen or the like. Are detectable. Thus, according to the relation ^ j _ / 2> depending on

vary according to the position of the two points for the product delivery of the angle OC for the rotation of the two cams

The variation of the places for the product delivery within the folder offers great advantages for a low effort production production of the inventively equipped folding apparatus - a. B _e instead of 2x3 «fold, direct delivery after the second fold or for the subsequent conversion of a conventional folder under changed production conditions due to the optimal adaptability to the available space conditions.

An advantageous Losu.ngsvaria.nte for driving the Eurvenscheiben to control the jaws is' there j aass according to the invention with the drive

Folding attached gear is engaged with a, on a shaft of a sheet guiding elements carrying cylinder, body of a folding blade mounted gear, which angeord-.net over two Zvd.sch.enrader, of which angeord-.net two on each side of the folder and by a Shaft are interconnected ", both cams for controlling the jaws drives and, together with a with a gear of the jaw cylinder engaged, on a shaft of the cylinder body for the Bogenführungseleraente receiving hollow shaft, a folding blade-bearing cylinder body of the folding blade fixed gear of the same size, however with a helical toothing of opposite pitch, in an axially displaceable double gear whose partial teeth is equipped with a matching to the ^ respective engaging gear helical intermeshing, engages "This drive design has the advantage that a Falzverstellu ng, d. H. the twisting of the folding blade bearing cylinder body of .Falzmesserzylinders, including jaw cylinder, relative to the sheet guiding elements carrying cylinder body of the folding blade without adjustment of the cams for controlling the jaws is possible. -

Ausführungsbeispielϊ

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing show: 210

1: a longitudinal section through a jaw cylinder with partial representation of the drive for the jaw cylinder and the cam! * To control the jaws according to the section D-D of Fig. 4. ·.

2 shows a representation analogous to FIG. 1 in accordance with the FIG. 1-thhr-TC TC η a H i o .

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3 shows a longitudinal section through a folding blade cylinder showing its drive connection with the jaw cylinder.

4 shows a side view with four jaw pairs offset by 90 ° from one another and the possibility of a product delivery at two different locations

in a schematic representation «

23Ο According to Figures _e 1 and 2, the jaw cylinder 1 with its shaft 2 on both sides in a respective side wall 3; • 4 of the folder stored.

On both sides of the folding jaw cylinder 1 (Fig. 1, 2) is rotatably mounted on the shaft 2 a gear 5 »6, of which the arranged on the right side gear 5 fixed to the cam 7 for controlling the trailing in the direction of rotation of the jaw cylinder 1, exclusively in the Produktübernähme A (Fig, 4) operated jaws 8 and arranged on the left side gear 6 (Fig _e 1 j 2) with two mutually rotated and lockable cam 9 »10 for controlling the leading, exclusively in the product delivery B and G- (Fig. 4) operated jaws 11; 12 is screwed.

The jaws 8; 11; 12 are rigid, each with a roller lever 13 »14; 15, at each of which a short 0lie 15; 17; 18 is rotatably mounted (Fig. 1, 2) _c

From Fig. 4 it can be seen that the leading jaws 11; 12 with respect to their order on the circumference of the Faizklappenzylinders 1 alternately one of the KurvenD 19 "; 20 of the cam 9 * 10 are assigned zuge-, so that all cam rollers 17 operated for Pro tduct delivery at the point C jaws 11th

218 127

on the solid line in FIG. 4 curve 19 of the cam disk 9 (FIG. 1) and all cam rollers 18 of the jaw actuated at the point B for the same purpose on the curve 20 of the cam disk 10 (FIG ) expire"

The curve 21 for controlling the trailing jaws 8 is formed as a cam groove 22 (Fig _e 1} 2), in which the corresponding cam rollers 16 intervene »

In FIGS. 1 and 2, in the interests of a clear representation, all roller levers 13; 14; 15 in rotated-.ter position and thus the cam rollers 16; 17; 18 out of contact with the cams' 7; 9; 10 is shown.

, The gears 5? 6 (Fig. 1 and 2) engage in a respective intermediate gear 23; 24, which together on a continuous, in the side walls 3; 4 of the folder mounted shaft 25 sit.

The intermediate wheel 23 is connected via two further intermediate wheels 26; 27 (Fig. 1; 2) mounted with a continuous on two of the side wall 3 side wall 4 of the folding shaft 28 of the sheet guide members 29 supporting the cylinder body 30 of the folding blade cylinder 3I gear 32 (Fig. 3) in combination, which by a gear 33 the folder drive is driven.

On the shaft 28 rotatably mounted in the side wall 3 hollow shaft 34 of the folding blade 35 supporting cylinder body 36 of the folding blade 31 is attached to the end also opposite the gear 32 the same size, but equipped with a helical toothing opposite pitch gear 37 is seated (Fig 3) · Both coaxially arranged toothed wheels

295th of the 32; 37 engage in each of the corresponding sub-teeth 30} 39 of a double gear 40 one on the

a mounted in the side wall 3 of the Faisapparates pin 41 sits and a driver 42 with the help of a screwed in with the side wall 3 Ab-. Cover 4-3 guided and frontally provided with a handwheel 44 threaded bolt 45 is axially displaceable. The partial teeth 38; 39 have the to the respective engaging gear 32 '; 37 matching oblique teeth. Between cover 43 and handwheel 44 is still a backup against independent rotation of the threaded bolt 45 serving, equipped with a hand lever 46 threaded ring 47 arranged

The gear 37 is also still with the on the. Shaft 2 (Fig. 1; 2) fixed gear 48 for driving the jaw cylinder 1 in engagement «

In Fig. 4, the jaw cylinder 1 has four jaw pairs I to IV _e offset by 90 mutually offset. The cam disks 7; 9i 10 rotate at a ratio of 4 · s 3 to the jaw cylinder »For this purpose, the gears that implement the drive connection between the jaw cylinder 1 and the cam disks 7» 9 »10 are correspondingly geometrically stepped.

The curves 19; 20; 21 have three equally spaced, d _e h. offset by 120 _? each with a rise 49; 50; 51 and descent 52 ·; 53; 54 equipped actuating zones 55; 56 »57 ·

After Fig _e . 4 are the two bodies for product delivery B; 0 offset by the angle \ z> to each other. In each case the leading folding flap 11 of the folding flap pairs I and III through the curve 19 at the point C and the leading folding flap 12 of the folding flap pairs II

33O and IY are opened by the curve 20 at the point B for product delivery, 'the curves 19; 20 b, taking into account the number of actuating zones ^ bjsv; twisted to each other S per curve by the angle o <l according to the relationship? I ^ * Example & (j = ^ ₉ and; "5

be fixed in this position.

In general, the two cams are opposite to the jaw cylinder faster rotating curves 34-0 according to the selected embodiment opposite to the direction of rotation and "twisted when compared to the jaw cylinder slower rotating curves in the direction of rotation by the angle ext for pressing the leading jaws.

The cam plate 7 (Fig. 1 j 2) is set so that in each case by the Falzklappenpaare I to IV (Figure 4) at the point A, the product takeover from the folding blade 31 while Querfalzung of the product by the interaction of the folding blade 35 with the jaws 8 and 11 and 8 and 12 of the jaw cylinder, wherein only the previously opened trailing folding jaw 8, the product. gripping, d. H. is closed, and the leading jaw 11 or «12 remains closed during the entire / process. On the other hand, for the product delivery at the point C, only the leading jaw 11 of. Falzklappenpaare I and II and at the point B, the leading jaw 12 of the Falzklappenpaare II and IV opened, while the trailing jaw 8 all Falzklappenpaare I to IV remains closed in each case. When the product is taken over, the cam roller 16 for actuating the trailing folding jaw 8 is in the lower position of the actuating zone 57 of the curve 21 and the cam roller 1-7 or * 18 for actuating the leading jaw 11 or 12 in the upper East 58 and 59, respectively For product delivery at point G, when the folding flap 11 is open, the cam roller 17 is in the lower position of the actuating zone 55 and the cam roller 16 is the folding flap

37O 8 keeping closed in the upper catch 60 of the curve 21, analogously to the product delivery at the point B

1 8 Ί 27

only the jaw 12 is opened _s d. 2i. the Kuxvenrolle 18 is in the lower position of the actuating zone 56 of the curve 20 »

In Fig. 4, it is shown how, at the point A, the product is transferred from the folding blade cylinder 31 to the folding flap pair I of the folding jaw cylinder 1 at the same time and a folded product from the folding box III is delivered to the ribbon line 61 at the point C. The Falzklappenpaar II holds a at the point B to the land line 62 product to be dispensed., While the Falzklappenpaar IV has already submitted the Pro ™ product at the point B. The Falzklappenpaare I and III thus constantly give their products at the point C and the Falzklappenpaare II and IV at öer point B from.

When collected production all products are depending on what portions of acting as a collecting cylinder folding blade 31 have two functions _v either at site B or C given.

For the product delivery, the upper belt line 62 has a controlled Ableitzunge 64 and the lower belt line 61 an uncontrolled Ableitzunge 63. The tape lines are coupled in a manner not shown, for example, each with a 3 «fold,

The illustrated in Fig. 1 $ 2j 3 drive for Falzklappen- and folding blade cylinder offers the advantage that a means not described in detail here made folding adjustment regardless of the drive for the cams 7; 9 »10 can be done. This is done after the. Loosen the threaded ring 47 using the. Handwheel 44, the double gear 40 axially displaced «As a result of the already described and in Fig. 1j Z \ 3 ± n each symbolically indicated a circle slope ratios of Sclirägverzahnun & en for" the gears

32 $ 37 and the double gear 40 remains the position of the gear 32, including the sheet guiding elements 29 carrying cylinder body 30 of the folding blade cylinder 31, and connected to the gear 32 drive for the cam 7; 9; 10 about the interim «. wheels 27; 26; 23; 24 unchanged, while the gear 37? inclusive of the folding blade-bearing cylinder body '36 of the folding blade 31 »and the gear 48 for driving the jaw cylinder 1 are rotated by the appropriate amount»

Notwithstanding the in Fig. 1; 2; 3 solution is also a drive of the cam 7 »9; 10 conceivable directly from the folder drive via face or bevel gear stages. ,

The angle / 2> (Figure 4) between the points B; C for the product delivery can be varied as desired by the two cams 9 »10 (Fig. 1, 2) after loosening the screw connections by a corresponding angle OC according to the said relationship ^ _ / O and in

the above-described wise twisted each other.

Also, the two bodies for the product delivery B; C together while maintaining a certain angle

ß> be relocated. For this purpose, after loosening the screw connections, the Kuryen discs 9 and 10 must be rotated together in relation to the gear 6 (FIG. 1, 2).

The ratios shown in FIGS. 1 to 4 are according to the principle of the invention also applicable to a-equipped with another even number of jaw pairs jaw cylinder accordingly transferable «The following table provides an overview of common applications of the invention:

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Palzklappen- couples Number of actuation zones per curve • gear ratio cam: ialzlcle-syl « .Angle for the Y & x set of the actuation zc new 450 2 • 3 2 ί 3 4 3 4: 3 It " ... 6 460 6 ί 5 (I 7 6: 7

Claims (3)

~ · 218 127 ' Claim for the invention:. "" Soldering device for controlling the jaws of a jaw cylinder for 'rotary printing' folders. machines with an even number of jaw pairs, , , whose hinged jaws are actuated by a cam, characterized in that the in the direction of rotation of the jaw cylinder (1) trailing jaws (8) respectively only in the product acquisition (A) by a cam (7) and the leading jaws (11; at two places All cam disks (7, 9, 10) in the direction of rotation of the jaw cylinder (1) rotate, the leading jaws (11, 12) with respect to their order , on the. Circumference of the jaw cylinder (1) in alternation of one of the two cam plates (9; 10) provided for it are assigned} the speed of all cams (7; 9i 10) to that of the jaw cylinder (1). in a ratio of 2: 3 in one with two, 4: 3 or 4: 5 with one with four and 6: 5 or 6: 7 with one with six at the same distance on the circumference of the jaw cylinder (1) distributed Falzklappenpaaren (I to IV), the curves (19; 20; 21) of the three cams (7; 9; 10) are arranged in the order mentioned for two pairs of jaws 3, four for 3 or 5 and six for 5 or 7 evenly distributed, each with one rise (49; 50; 51) and descent (52; 53; 54) have equipped actuation zones (.!? Ü> \ 56; 37) and the two cam discs (9; 10) for controlling the leading FaIzklappen (11; 12) under Taking account of the number b of the actuation zones {3 ^> \ 56) per curve (19; 20) and of the angle fo enclosing the two points for the product delivery (B; G) with faster rotating cam discs (9; 10) opposite to the direction of rotation · - ^ - _m 2ί 8 127. - and with respect to the jaw cylinder slower rotating cam discs (9; 10) in the direction of rotation by an angle rv _ r ³ to each other " are turning _e 2. Device according to item 1, characterized in that the two cam discs (9, 10) for actuation of the advancing folding jaws (11, 12) are arranged side by side on the shaft (2) of the jaw cylinder (1) twisted and with screw connections or the like * are detectable « 3 * Device according to item 1, characterized in that a gearwheel (33) which is connected to the drive of the folding apparatus has a gearwheel (33) mounted on a shaft (28) of a sheet guiding element (29) carrying a cylinder (30) of a folding blade cylinder. 32) is engaged by means of several Zwrischenräder (27; 26; 23; 24), two of which are arranged on either side of the folder, the cams (7j 9; 10) for controlling the jaws (8; ; 12) drives and together with one with a gear wheel (48). of the folding jaw cylinder (1) engaged, on a shaft (28) of the cylinder body (30) for the sheet guiding elements (29) receiving the hollow shaft (34) of a folding blade (35) carrying the cylinder body (36) of the FaLzmesserzylinders (31) fixed gear ( 371 same size, but with a helical toothing 53Ο opposite pitch in an axially displaceable double gear (40) _f whose partial teeth (38, 39) is equipped with a corresponding to the respective engaging gear (32, 37) matching helical teeth, engages. Hi8f2u..it ".... pages Zeidinuooen