FI103394B - A drive device for drawing a web of material into a rotary printing press - Google Patents

Description

! 103394 Actuator for pulling a web of material into a rotary printing press ♦ - Drivanordning för anordning för indragning av matrialband vid en rotationstryckmaskin.

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The present invention relates to an actuator for drawing a web of material into a rotary printing press by means of a tensile element of limited length according to the preamble of claim 10.

Devices of this type are known. Thus, DE patent application 22 41 127 discloses a motor driven drive unit f consisting of a limited length roller chain movable in guides made of hollow profiles. The guides are positioned rigidly on the frame of the printing press, on a designed drive path. They have forks, gears, intersections, and the like, with respect to which the traction line can be pre-adjusted. The movement of the roller chain is carried out 20 by means of actuators on the machine frame. This means that there must be a large number of actuators of this type along the entire runway, since the distance between the individual actuators must be less than the length of the roller chain.

A device of this type is disclosed in DE-A-20 21 246. It travels with a motor trolley equipped with an electric drive motor along a toothed bar wire and in which the gear used by the electric drive motor is in contact with a toothed bar.

This toothed rack is also attached to the body of the printing press, along the length of the traction line, and has gears, junctions and the like to pre-level the traction line. When using the device with an external power supply, power is supplied through the power supply rail that contacts the pantograph located on the engine-35 wagon. The electrical 103394 2 current is returned by means of a rack tooth. In battery operation, the corresponding batteries are transported in an auxiliary conveyor connected to the motor vehicle.

The disadvantage of this device is that it has only one motor trolley and because a certain amount of propulsion is required, that the motor trolley dimensions become very large, requiring a large amount of space for the traction system on the printing press, which in many cases is not immediately available 10 achievable. In addition, it is dangerous for the rack to become dirty and can lead to unexpected disruption during the pulling event.

It is an object of the invention to provide a drive device for drawing a web of material which is positioned directly on a drawing element capable of generating the necessary pulling force for pulling a web of material into a rotary printing press. However, the drawing element has very small dimensions. In addition, the power supply and transmission must be shaped in such a way that disturbances due to contamination can be eliminated.

The object is achieved according to the invention according to the features set forth in the characterizing part of claim 1.

; Advantageously, the guide rail is provided with rows of ridges disposed on either side of its end region transverse to the drive direction of the traction element, into which the projections of the wheels on the drive shafts of the electric motors protrude. This creates an apparently closed transmission between the guide rail and the wheel 30, which, due to the resilient property of the brush row 34, has an elastic state. Thus, each wheel has its own gripping arrangement, so that the drive units in succession and in pairs do not interfere with one another.

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In addition, the rows of brushes on which the wheels of the drive motors project are practically self-cleaning. At each passage of the traction element, the projections of the wheels abrasion the rows of brushes and then return to spring to their original position, whereby the dirt particles hanging in the brush rows are spun off.

With successive elements having a plurality of drive motors, a high tractive force can be obtained in the smallest cross-sectional dimensions.

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

An exemplary embodiment of the invention will now be described in more detail and 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 where the elastic coupling means consists of a spring pin; Figure 2 shows a sectional view of a member with a drive motor for the traction element, taken along line II-II in Figure 5; Fig. 3 is a sectional view of the drive element member having a pantograph along the line of Fig. 5: III - III; Figure 4 is a sectional view of the drive element member taken along line IV-IV of Figure 5, provided with a holding device for receiving the drive belt; Fig. 5 is a plan view of some elements of the drive member 30 corresponding to Fig. 1; Figure 6 schematically illustrates the positioning of the individual members as an overall traction element; Fig. 7 shows the positioning of the chart elements as implemented as a single element member 35 provided with a current collector; Fig. 8 shows a positioning of the hoof elements as implemented as a single-element member and provided with drive motors; Figure 9 schematically shows the power supply to the conductor rails; Figures 10 to 12 show an embodiment of a drive device; Figures 13 to 15 show another embodiment of the drive.

10, as shown in Fig. 1, the tensile element 1 comprises a plurality of successive members 2, 3, 5. Each member 2, 3, 4 comprises a housing 5, 6, 7. Each housing 5, 6, 7 is disposed on the side of the guide rail 8. guide rollers 9, 10, which are mounted 15 on respective shafts 11 of each shell 5, 6, 7, and are rotatably mounted on a bearing. Each guide roll 9, 10 is symmetrically positioned on the invisible side of the guide rail 8 with respect to it, which thus form a guide pair 9, 10 together 20 for guiding the members 2, 3, 4 on 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 pivotable and rotatable in all 25 directions and within a predetermined path of the guide rails.

According to the first embodiment, shown in Figure 1, this joint is constructed such that, in the driving direction (arrow 12), there is a slot-shaped recess 13 formed at the front and rear ends of each shell 2, 3, 4, bounded by two joint plates 14 and 15.

Both connecting plates 14 and 15 are each provided with a hole in which a bolt 16 is disposed and which 35 is fixed in place.

• · 5 103394 This bolt 16 always has a hinged end with a hole 17 in the coupling rod 18. Thus, by means of the coupling rod 18, two members 2, 3 or 4 are pivotally connected to each other. Each end hole 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 which extends outwards.

A spring 22 disposed on the bolt 16 and supported on the connecting plate 14 presses the coupling rod 10 against the flat inner side of the connecting plate 15. The coupling pin 18 is shaped as a rectangle, thereby providing a well-defined position on the inner side of the connecting plate 15. Thereby a tendency arises for the entire drive element 1 to lie in a plane perpendicular to the axes of the weight cylinders. The design of the openings 17 of the coupling rod 18 allows the coupling rod 18 to be pivoted in relation to the engaging members 2, 3, 4. Thus, the traction element 1 may also follow the curvature of the guide rail 8 which leads away from a plane which is perpendicular to the axes of the press 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 rod 18. To limit this pivoting movement, the spring 22 is disposed on a sleeve 23 whose lower open edge acts

According to another embodiment (Figs. 1a and Ib), the resilient connecting means between two adjacent members comprises a spring pin 75. The spring pin 75 30 is provided with a stop 76 secured thereto at each end and secured in a known aperture 13 to the members 2, 3, 4. 14 and 15 make up. The spring pin 75 has a circular cross-section, thereby providing the optimum 35 with the desired turns and twists.

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As can be seen from the section of Fig. 2, the member 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 in a housing 5, each of the electric motors 5 and 24 having a gear transmission 26 and 27 coupled to a transmission shaft 28 and 29 in the region 8 of the guide rail. 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 10 (Fig. 1).

The upper part of the guide rail 8 has a longitudinal groove 32 extending on both sides thereof, in which a correspondingly shaped part 33 of the guide roller 9 and 10 protrudes. The guide rails 15 8 have ridges 34 disposed transversely therewith. the projections 30 thereby providing a seemingly sealed transmission of elastic feel 20 between the actuator and the guide rail 8 due to the resilient flexibility of the brush rows 34. The guide rollers 9, 10 have a recess 35 in the region of the ridge 34 of the guide rail 8, and the lower part 36 acts as a support against lateral pivoting. The guide rail 8 is fixed in a known manner to the body of the printing press.

; Figure 3 is a sectional view of the traction element 1, i.e. the mandrel 3. The electric motors of the traction element 1 are energized by means of the element 3. For this purpose, a pantograph 37 is located in the center of the housing 6, as shown in Fig. 1, and is pressed by a spring 38 against the conductive slider 30 when it is disposed on its end face along the guide rail 8. The member 3 has identical guide rollers 9 and 10. 2. Diode 40 and 41 are always provided on each side of housing 6 for power supply and connection procedures.

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Figure 4 is a sectional view of the member 4 of the traction 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. In the center of the housing 7 of the member 4, a pivot 5 43 is rotatable. The portion 44 of the pin 43 projecting from the shell 7 has a surface 45 against which the belt 42 remains secured by a screw 46. It can also be seen in Figure 1. Similarly 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 drive element 1 of Figure 1. Each member 2, 3, 4 has the left side of the housing removed in the figure, and the right half is shown with a screwed cap 15 47. In the representation of the member 2, electric motors 24 and 25 are symmetrically disposed in the center 3 and symmetrically diodes 40 and 41 disposed in housing 6. The general view of member 4 further shows the attachment of the strap 42 to part 44 of pin 43. The individual members 2, 3, 4 are pivotally connected to one another by means of coupling rods 18.

Fig. 6 shows the positioning of the individual members 2, 3, 4, which when coupled together form a traction element 1. Each member 2, provided with drive motors, a member 3 with a current collector and again a member 2 with motors, form a group 48 in succession. ), seven such groups 48 being connected to each other from the front. 30 Then there is connected a member 4 provided with a clamping device for a web of material to be pulled, followed by four groups 48.

Power is supplied to the traction element 1 by means of a slider portion 39 placed on the conductor rail 8. In Fig. 9, brochure-35 shows the placement of this slider 39. The 103394 8 portions of the guide rail 8 have a positive electrical conductor 50 and a negative electrical conductor 51. Slider portions 39, each extending on the conductor rail 8 only over a certain distance, e.g., 30 to 50 cm, are alternately connected to the electric conductor 51. Both electric conductors 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 illustrates the positioning of diagram elements as implemented in member 3 and provided with a pantograph 37. The pantograph 37 slides, alternately, sequentially with a slider 39 connected to the positive electrical conductor 50 or negative electric current conductor 51 as the material web is drawn. 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 alternately closing and transmitting. When the current collector 37 is in contact with the negative slider portion 39, the diode 40 is bypassed and the passage of the diode 41 is closed. When the current collector 37 is in contact with the sliding portion 39 of the posi-25, the diode 41 is passable and the passage of the diode 40 is closed.

According to the circuit shown in Fig. 8 and provided with each member of the traction element 1, both electric motors 24 and 25 are connected in parallel. The terminals 57 and 59 of the connections 30 are always positive, the terminals 56 and 58 are always negative. The electric motors 24 and 25 are always connected so that they have opposite directions of rotation. The electrical current is connected to the adjacent member 3 (Fig. 7) by means of two electric 35 wires, one connecting the 55 and 9 103394 57 and the other connecting the 54 and 56 terminals.

All members 2 and 3 of the traction element 1 are thus electrically connected to each other. This means that all drive motors 24, 25 of the drive element members 2, and all current collectors 37 of the members 3 are electrically and parallel to each other. Because the length of the slides on the guide rail 8 is chosen such that each of the current collectors of the traction element 1 passes over the positive slides 10 39 and the plurality of current collectors 37 of the traction element 1 over the negative slides 39, it is thus guaranteed

Another embodiment of the drive unit (Figs. 10-12) is that the member 2, provided with electric motors 24 and 25, has guide rollers 9, 10 instead of recess 35 (Fig. 2) in the region of projections 70 corresponding to projections 30 of wheel 31. (Figure 2). In this case, the electric motors 24 and 25 drive the guide wheels 9, 10 provided by the gear transmission 71, 72 with the projections 20 70. The projections 70 extend into the ridge 34 of the guide rail 8 and move the traction element 1 on the guide rails 8.

In another embodiment of the actuator (Figs. 13-15), the guide rollers 9, 10 of the member 2 with electric motors 24 and 25, 25 are provided with friction surfaces. The operation of the guide rollers 9, 10 is identical to that of the embodiment shown in Figures 10 to 12, namely, via a gear transmission 71, 72. The friction surfaces consist of a track-like strip 30 73 which always runs around a guide roll 9, 10 on one side of two guide rails 8. The guide rollers 9, 10 press the track-like belt 73 against the guide rail 8, in which case there is no row of brushes. Track-shaped ribbons 73 are 35 easily replaceable when heavily worn.

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

To pre-adjust the trolley through the rotary printing press, the guide rail network is provided with known gears, junctions, junctions, 10 and the like, which are remote adjustable.

Claims (8)

1. Drive device for a device for retraction of a material web in a rotary printing machine by means of a limited length retraction element, provided with individual, interconnected interconnected members, equipped with guide rollers for generating the retraction element along with an electric drive motor a guide rail arranged outside the cylinder area supported on the stonune of the rotary printing machine and by means of which the retraction path can be adjusted in advance, characterized in that: - at least two of the retracting element (1) are each provided with at least one electric drive motor (24, 25), which drives at least one wheel (31), or which drives the guide rollers (9, 10) by means of power transfer, such that the traction element (1) advances on guide rails (8); - at least two of the second means (3) of the retraction element (1) are provided with a centrally located, elastically supported pantograph (37) which is in sliding contact with the conductive sliding members (39) located on the guide rail (8): the sliding members (39), which are longitudinally arranged one after the other on the guide rails (8), spaced apart from each other by rod-like profiles, are in turn connected to a positive current conductor (50) or negative current conductor (51); . - all the drive motors (24, 25) of the means (2) and all the means (37) of the retraction element (1) are electrically connected and connected in parallel; - between the negative polarity connection line (60) and the switches (37), a respective diode (40) is connected, which is conductive, since the switch (37) is in contact with a ·; negative current conductor (39); - between the positive polarity connection line (61) and the switches (37), a respective diode (41) is connected which is conductive, since the switch (37) is in contact with a positive conductor (39); 103394 Device according to claim 1, characterized in that the guide rail (8) is provided on both sides in its end region with brush rows (34) transverse to the driving direction of the retraction element (1). Device according to claim 2, characterized in that each electric drive motor (24, 25) on its drive shaft (28) and (29) has a wheel (31) provided with projections (30) which is in contact with the guide rail (8). ) brush rows (34). Device according to claim 2, characterized in that the guide rollers (9, 10) in the area of the brush rows (34) have projections in contact with the brush rows (34), and that the electric drive motors (24, 25) drive the guide rollers (9). , 10) using power transmission. Device according to claim 1, characterized in that the wheels (31) and the rollers (9, 10) driven by the electric drive motors (24, 25) have a friction lining which rotates along the guide rails (8) and thus promotes the retraction element. (1) on the guide rails (8). 6. Apparatus according to claim 5, characterized in that the friction lining of the guide rollers (9, 10) consists of a caterpillar chain-shaped band (73) which wraps respective two rollers (9, 10) located on one side of the guide rail (8). Device according to any one of claims 1-6, characterized in that an intake element (1) consists of seven connected groups (48), one connected therewith: connecting means (4) with a pouring device (43, 44, 45). , 46) for a belt for securing the web of material and connecting therewith connected to one another four additional groups (48), a group (48) consisting of a means (2) with drive motors (24, 25), one connected thereto. articulated connecting means (3) with switchgear (37) and an associated means (2) with drive motors (24, 25). 8. Apparatus according to any of claims 1-7, characterized in that the guide rails (8) consist of an electrically non-conductive material, especially plastic.