FI104060B - Device for withdrawing material strips at the rotary printing machine - Google Patents

Description

104060

A device for drawing a web of material into a rotary printing press. - Anordning för indragning av materialband vid rotationstryckmaskinen.

5

The present invention relates to a device for drawing a web of material into a rotary printing press by means of a drive element having a limited length having a drive device according to the preamble of claim 1.

Devices of this type are known. Accordingly, DE 35 35888 discloses a motor driven traction sheave consisting of single members articulated to one another. Each individual member 15 includes a pair of guide rollers which allows the drive element to be moved along the guide rail. This guide rail may be omitted in this apparatus from certain distances. To control these non-guided portions of travel, the individual joints are interlocked between the individual members by a locking mechanism. Thus stiffened draw gear. . the ment area then progressively continues until; / it comes back to the guide rail. After that, the joint will unlock again.

· · ... 'The joints of this refcoelemaTt are constructed such that · # ·; V 25 turning can only occur in one plane. This level • · ί / .j is perpendicular to the cylinders of the printing press. For this reason, it is not possible to automatically control the material web to be pulled into the printing press by means of pivoting rods or so-called. Over the Bay Window. Therefore, pulling the • • 30 bar of material through the swivel rods and Bay-Window must be done manually.

• ·

If the articulation between the individual members • · · is considered to be nearly clear in certain directions of movement of the traction element, for example to simplify stiffening, then there is a danger, especially • · 2 104060 when the guide rails are not precisely oriented . This locking causes interference during the drawing of the web of material on the rotary printing press.

An object of the invention is to provide a pulling device for a rotary printing machine which can also automatically pull a web of material by means of pivoting rods and so-called. Over the Bay-Window, and to avoid interference from the locking of the traction unit during the pull-10 event.

The object is achieved according to the invention according to the characterizing part of claim 1.

Other preferred embodiments of the invention will be apparent from the dependent claims.

Embodiments of the invention will be explained in more detail below, with reference to the accompanying drawing, in which Figure 1 is a side elevational view of a traction element provided with four different elements; Figures 1a and Ib show an embodiment. . a variant in which the elastic coupling means consists of a spring / pin; Fig. 2 shows a sectional view of the drive element with a drive motor along the line V 25 II-II in Fig. 2; Fig. 3 is a sectional view taken along line III-III of Fig. 5; . ·. Fig. 4 shows a section t * «* m 30 of the drive element member along line IV-IV in Fig. 5, provided with a holding device for receiving the drive belt; Fig. 5 is a plan view of some of the traction element

«I I

* ... · just organs corresponding to Figure 1; Fig. 6 schematically shows the positioning of the individual bodies as a total traction element; Fig. 7 shows a diagram element or an arrangement as implemented as an element of a single element and equipped with a current collector; Fig. 8 shows the positioning of the chart elements, as implemented as a single element member, provided with drive motors; Fig. 9 schematically shows the power supply to the conductor rails; Figures 10 to 12 show an embodiment of a drive embodiment 10; Figures 13 to 15 show another embodiment of the drive.

As shown in Fig. 1, the tensile element 1 includes a plurality of successive members 2, 3, 4. Each member 2, 3, 4 includes a housing 5, 6, 7. Each housing 5, 6, 7 has a side-mounted guide rollers 9, 10 which are secured to respective shafts 11 of each shell 5, 6, 7 and are rotatably mounted on a bearing. Each guide roll 9, 10 has a guide roll corresponding to the invisible side of the guide rail 8, which is thus symmetrically disposed so as to form the guide rolls 9, 10 together: Y: an effective pair of members 2, 3, 4 to guide the guide rail 8.

Each member 2, 3, 4 is connected to an adjacent member by means of a flexible connecting means such that the various members are rotatable and rotatable in all directions and within the limits required by the conductor. , with a predetermined track.

In accordance with the first embodiment, shown in Fig. 1, this joint is constructed such that, in the driving direction (arrow 12), there is a slit-shaped recess 13 formed in the front and rear ends of each shell 5, 6, 7. bounded by two junction plates 14 and: 35 15.

4, 104060

Both connecting plates 14 and 15 are each provided with a hole in which the bolt 16 is inserted and which remains fixed.

This bolt 16 always has an articulated end with a hole 17 in the coupling rod 5 18. Thus, by means of the coupling rod 18, two members 2, 3 or 4 are pivotally connected to each other. Each end opening 17 of the coupling rod 18 has a central region 19 which corresponds approximately to the diameter of the bolt 16, while the outer regions 20, 21 have a diameter 10 extending outwards.

A spring 22 disposed on the bolt 16 and supported on the connecting plate 14 presses the coupling bar 18 against the flat inner side of the connecting plate 15. The coupling pin 18 is shaped as a rectangle, thereby creating a well-defined position on the inner side of the connecting plate 15. Thereby a tendency is created for the entire drive element 1 to lie in a plane perpendicular to the axes of the printing cylinders. The design of the openings 17 of the coupling rod 18 allows the coupling rod 18 to be pivoted in rotation relative to the attached members 2, 3 or 4. Thus, the traction element 1 can also follow the curvature of the guide rail 8 which leads away from a plane perpendicular to the axes of the printing cylinders.

• · ·

In order to allow the said pivoting movement, the slot-shaped recess 13 has a certain width b corresponding to at least twice the height »· h of the coupling bar 18. To limit this pivoting movement, the spring 22 is disposed in a sleeve 23 having a lower open edge. ·. ; the coupling rod 18 in response.

• · · 30 According to another embodiment, the {patterns • · · · · *. la and Ib), consisting of two adjacent members • · V: a resilient coupling means with a spring pin 75. The spring pin 75 is provided at both ends with a '' stop 76 which is known in a known manner 35 to the slotted recess 13 of the members 2, 3, 4 5 104060 each of the connecting plates 14 and 15 form. The spring pin 75 has a circular cross-section, optimally guaranteeing the desired rotations and twists.

As can be seen from the section of Fig. 2, the member 5 2 is constructed as a drive for the drive element 1. To this end, an electric motor 24 and 25 is disposed on each side of the guide rail 8 on the housing 5, each of the electric motors 24 and 25 having a gear transmission 26 and 27 associated with a transmission shaft 28 and 29 in the region 10 of the guide rail 8. On these transmission shafts 28 and 29, a wheel 31 with projections 30 is fixed to be rotatable. The location of the electric motors in the housing 5 is selected such that the respective wheel 31 is positioned between the guide rollers 9 and Γ0 (Fig. 1).

The upper part of the guide rail 8 has a longitudinal groove 32 extending on each side thereof, on which a correspondingly shaped part 33 of the guide roller 9 and 10 protrudes on each side, at the height of the wheel 31, ridges 34 disposed transversely thereto. 31 projections 30, thus providing a seemingly guaranteed spring of rows 34 of the contoured ridge. having elasticity due to customary elasticity; · Transmission between drive and guide rail 8.

· ·

The guide rollers 9, 10 have a recess 35 in the region of the ridge 34 34 · · · · ... '25 of the guide rail 8, and the lower part 36 acts as a support: against lateral rotation. The guide rail 8 is fastened in a known manner to the body of the printing press.

Fig. 3 is a sectional view of the member 3 of the traction element 1. The electric motors of the traction element 1 are supplied with energy 30 by the element 3. For this purpose, a current collector 37 is located in the center of the casing * * 6, as also shown in Fig. 1, and is pressed by a spring 38 against the conductive sliding section 39 when it is positioned on its end face along the guide rail 8. identical guide rollers 35 9 and 10 as the member 2 of the drawing element 1.

6 104060

Diode 40 and 41 are always provided on each side of housing 6 for power supply and switching operation as described below.

Fig. 4 shows a sectional view of the member 4 of the drive element 1. The member 4 is provided to receive a strap to which the beginning of the web of material to be pulled can be fastened. The body 4 of the member 4 has a pivoting pivot 43 in its central part 7. It can also be seen in Figure 1. In response to the members 2 and 3, this member 4 is also provided with guide rollers 9, 10 and which are in contact with the guide rail 8.

Figure 5 is a plan view of a portion of the members 2, 3, 4 of the pull member 1 of Figure 1. Each member 2, 3, 4 has the left side of the housing taken away in the figure, and the right half is shown with a screwed-on cover 47. In the representation of the member 2, symmetrically positioned electric motors 24 and 25 are discernible. 8, the diodes 40 and 41 disposed in the housing 6 are further illustrated in the general view of the member 4. The fastening of the strap 42 to the portion 44 of the pin 43 is shown. met 2, 3,4 are pivotally connected to each other by means of clutch rods 18.

«*

Fig. 6 shows the locations of the individual members 2, 3, 4, which, when coupled together, produce a traction element 1. Each member 2, provided with drive motors, a member 3 with a pantograph, and again. the drive means 2 with successive motors form • «· V: connected in group 48. In the direction of travel (arrow 49) is the front-. ·. ·. seven such groups are connected to each other 48.

• · i, ··. Thereafter, a member 4 is provided, provided with a fastening device for a pullable material web, to which four groups 48 are still attached.

J * * 7 104060

Power is supplied to the traction element 1 by means of a slider portion 39 placed on the conductor rail 8. Figure 9 shows the placement of this slider 39. The foot portion of the guide rail 8 has a positive electric conductor 50 and a negative-5 dense electric conductor 51. 51. Both electric conductors 10 50 and 51 are connected to a 12 V DC supply device not shown here. The slides 39 are at a certain distance a between the opposites, which is larger than the dimensions of the pantograph 37 in the driving direction, thereby avoiding a short circuit of the circuit.

Figure 7 shows the arrangement of diagram elements as implemented in member 3 and equipped with a pantograph 37. The pantograph 37 is alternately slid by a slider 39 connected to a positive electrical current conductor 50 or a negative electrical 20 conductor during drawing of the material web. at terminals 52 and 54 always negative, and at terminals 53 and 55 always positive, a diode 40 and 41 is connected between terminals 60 and 61, which are alternatingly closing and transmitting. When the current collector 37 is in contact with the negative slider 39, the diode 40 is passable and the passage of the diode 41 is closed. When the current collector 37 is in contact with the positive slider 39, the diode 41 is passable and the passage of the diode 40 is closed.

, ·,; According to the connection shown in Fig. 8, and provided with each member of the traction element 1, each of them is. also the electric motors 24 and 25 are connected in parallel. Terminals 57 and 59 are always positive and terminals 56 and 58 are always negative. The electric motors 35 24 and 25 are always connected so that they have • · · «8 104060 opposite directions of rotation. The electrical current is connected to the adjacent member 3 (Fig. 7) by means of two electrical wires, one for connecting the terminals 55 and 57 and the other for connecting the terminals 54 and 56.

All the elements 2 and 3 of the traction element 1 are thus electrically connected to each other. This means that all the drive motors 24, 25 of the traction element members 2 and all the current collectors 37 of the elements 3 are electrically and parallel connected. Because the length of the slides on top of the guide rail 8 is chosen such that each of the current pickups 37 of the traction element 1 over the positive slides 39, and the plurality of current collectors 37 of the traction element 1 over the negative slides 39, it is ensured constantly closed.

Another embodiment of the drive unit (Figs. 10-12) is that the member 2 provided with electric motors 24 and 25 has guide rolls 9, 10 instead of a recess 35 (Fig. 2) in the region 20 with projections 70 corresponding to projections 30 of the wheel 31. !, '· (Fig. 2) In this case, the electric motors: V: 24 and 25 are driven by gear wheels 71, 72 with guide wheels 9, 10 having protrusions • 1 70. The protrusions 70 push * 1 1 into the ridge 34 of the guide rail 8 and move • ·, ·,: 25 elements 1 with guide rails 8.

In the second embodiment of the drive device (Figs. 13 to 15), the guide rollers 9, 10 of the member 2 with electric motors 24 and 25, t are provided with kits. The guide rollers 9, 10 are operated in the same manner as the embodiment shown in Figs. 10 to 12, namely, the gear transmission 71, 72. The friction surfaces consist of a docking strip 73 which extends around the guide rollers 9, 10 on either side of the two guide rails 8. The guide rollers 9, 10 press the track-like belt 73 against the guide rail 104060, and in this case there is no row of brushes. Track-shaped ribbons 73 are easily replaceable when heavily worn.

5 The power supply of the traction element, the idea of the transmission, and the connection and control of the individual elements of the traction element disclosed herein, ensure a smooth pull of the material web into the rotary printing press over the pivoting rods and through the Bay-Window.

10 To pre-adjust the trolley through the rotary printing machine, the guide rail network is equipped with known gears, intersections, and the like, which are not shown, and are remotely controlled.

f · »» • • • «· i II» * • * · 9 9 t I · 9 • · • 9 9 9 * • · 9 9 9 * · 9 9 9 • 99 • • ( 9 9 (9 9 9 9 9 9 9 * • · <· «9 9 9 9 • 9 * {I (

Claims (6)

An apparatus for retracting material webs in rotary printing machines by a finite length retraction element with a drive means consisting of a plurality of articulated links (2, 3, 4) with mutually opposite and ρέ opposite sides of a guide rail (8) arranged (9,10) which runs in guide grooves (32) on the guide rail (8) and serves to move the retraction element (1) along the guide rail (8) which is outside the area of the rollers ρέ of the machine frame and is provided with branches through which the retraction path can be preset, characterized in that: a) each link (2, 3, 4) is provided with at least one pair of guide rollers (9, 10), b) the links (2, 3, 4) are interconnected by one another. each coupling link (18), c) the coupling link (18) is provided at each end with an opening (17) through which extends a bolt (16) fixedly fixed in two flanges (14, 15) on the link (2, 3). (4), (d) the bathing flanges (14, 15) defines a recess (13) on both sides 20 of each link (2, 3, 4) which recess occupies one end of the coupling link: (18) and has a width (b) corresponding to at least twice the height (h) of «I (e) the openings (17) of the coupling link (18) have a φ ·. ···. center portion (19) having a diameter approximately equal to the diameter of the ··· bolt (16) while the end portions (20, 21) of the aperture diverge outwardly. ! ·. *: 25 • ·· • · Device according to claim 1, characterized in that the coupling link (18) is poured into a fixed position ρέ the bolt (16) by means of spring elements (22). • · · • ♦ «• · ·: Tr Device according to claim 2, characterized in that the spring elements (22) consist of a spring which surrounds the bolt (16) and one end abuts against it; "the flat inside of one flange (14) and at opposite end presses the coupling member - f II / ken (18) towards the flat inside of the second flange (15). Device according to claim 3, characterized in that the spring (22) in the opposite end of its coupling link (18) is surrounded by a sleeve (23) to limit the pivotal movement of the link (18) in a tab through the shafts (16). ). 5 Device according to any one of claims 1 to 4, characterized in that a first link (2) is provided for driving, a second link (3) for power supply and a third link (4) for receiving the belt for the material web to be retracted. . Device according to claim 5, characterized in that two first links (2) and a second link (3) arranged in series connected in succession form a group (48) and a plurality of interconnected groups (48) together with the the third link (4) forms the retraction element (1). * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * «·« • · · • · «« «II f I • II f