JP2970968B2 - A device for fixing the upholstery to the sheet guide cylinder of a rotary printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for fixing a webbing to a sheet guide cylinder in a rotary printing press.

[0002]

2. Description of the Related Art According to the usual method of fixing a body to a body having a gripper mechanism, a fastening plate is adapted to tighten the body using a number of screws. However, the screws are difficult to access due to the internal members of the gripper mechanism. Therefore, it has been attempted to insert two gears and arrange the screw deeper in the body groove below the holding claw mechanism to facilitate access.

According to EP-OS 0 339 228,
Devices for tightening flexible sheets are known. A resilient seat with two fixing crossbars at the front end is tightened behind the claw pillow. However, the complete set of claw pillows must be removed to guide the seat edge. This is time consuming and requires re-adjustment after re-installing the nail pillow.

Further, JP-OS-63-92743 and JP-A-63-145032 disclose a rod-shaped cam member extending between the claw pillow and the body over the entire length of the body. This bar-shaped cam member tightens the body tension between the claw pillow and the bar-shaped cam portion. When the bar cam member pivots from one side of the machine, the torsion produces a reduced clamping force from the point of introduction of the torque over the entire width of the machine,
A uniform tightening force is not guaranteed over the entire length of the cylinder.

[0005] A tightening force whose size is not fixed depending on the position of the rod-shaped cam member acts on the claw pillow, forcibly deforming it. As a result, the quality during printing is impaired.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is based on the prior art cited above, such that a simple operation and a uniform clamping force are ensured in a minimum space. The object is to optimize the tightening device for fixing the thin body to the guide cylinder.

[0007]

The present invention solves the above-mentioned problems,
It has one regulating rod and the clamping plate axially movable in the cylinder gap, double over the entire width of the cylinder along the adjusting rod
A number of clamping members are arranged, which are prestressed by springs and are solved by the actuation of the clamping plate as the adjusting rod moves axially. An advantage of the subject of the invention is that all clamping members are operated with one adjusting means. By slightly moving the adjusting rod in the axial direction, a large tightening force is generated so that the body tension can be securely fixed.

[0008] Te advantageous configuration odor of the present invention, Tightening member is arranged on the adjusting head as a plurality of clamping bodies, these clamping body has a wedge-shaped clamping surfaces, the spring force between the stopper Is given an initial stress by
When the adjustment rod moves in the axial direction, it is attached to the clamping plate
Was pin Ru actuating the clamping plate via.

The advantage of this configuration is that it utilizes the wedge effect. Thereby, only a small axial force is required to produce a high clamping force. Since the tightening member is prestressed by the spring, when the adjusting rod is further moved in the axial direction after the tightening surface has hit the pin, the spring force acts as a tightening force that uniformly presses. Since the adjusting rod is supported in a closed system, significantly reduced forces act on the claw pillow and do not deform it.

[0010] In another advantageous embodiment, a plurality of clamping members are provided.
One end of each bending lever as a bending lever
Is held rotatably on the tightening plate around the bolt,
And it was rotatably mounted at the other end of the bending lever
It is supported by the body via the roller body, and the bending lever
Between the other end and the stopper attached to the adjustment rod.
The spring is prestressed by the
Several bending levers are supported, these bending levers being supported on the body via roller bodies, and when the adjusting rod moves in the axial direction, the clamping plate tightens the thin body tension. The advantage of this configuration is that the space required for the clamping device is extremely small. In the case of adjustment, a slight axial movement of the adjusting rod can produce a sufficiently large clamping force. The maintenance of the clamping force is ensured by the spring supported by the stopper.
The essential advantage of a spring is that the force is not affected by tolerances or operators and is always constant.

[0011] Since the lining is evenly tightened from the inside to the outside, the life of the lining and the accuracy of sheet transport are significantly improved. If necessary, the upholstery can be continuously tightened from the outside to the inside. In this case, for example, the two outer clamping points can hold the waist with little force. This allows the front end to be adjusted axially and radially on the torso. This simplifies the underlaying of the guide cylinder, since it is no longer necessary to hold the trunk upright.

In another advantageous embodiment, the clamping element is formed as a cam lever and has a non-uniform radius or is formed as an eccentric. This compact fastening device has the advantage that the fastening function can be carried out quickly because only a few parts need to be moved.

According to another tightening principle suitable for the problem to be solved, there is provided an adjusting member pivotally supported in the body groove, and the turning of the adjusting member causes the thin body end to be attached to the claw pillow. tighten. Advantageously, by selecting a suitable material, the required clamping force can be reduced and component tolerances can be compensated.

According to an advantageous embodiment of the present invention, the adjusting member is arranged as a plurality of cams on the gripper shaft having the bearing, and a curved portion is formed in a region between the engagement portions. The curved portion activates a pressing portion that is prestressed by a disc spring, and the pressing portion moves a bolt with a stopper, which moves the clamping plate. If the cam pivots in a simple manner, the clamping force generated is no longer operator dependent.

Another advantage is that no clamping force is applied to the claw pillow during pressing when tightening a thin waist.
This ensures that the once-adjusted gripper position is maintained.

In another configuration, the adjusting member is provided on the body with a circular section bar .
And are arranged, the shape in the axial direction the circular cross-section rod on
One or containing a plurality of resilient fastening members made a longitudinal groove, the clamping member, characterized in that the tightening of the thin cylinder tension in the nail pillow. The advantage of this configuration is that the required space is small and the tightening characteristics can be specified in advance by selecting the material of the elastic tightening member. The following claims describe the formation of the elastic fastening member. These elastic fastening members have a circular cross section with screws
It is also possible to provide a tube which can be formed as a leaf spring which can be mounted on the surface of the rod and which can feed the pressure medium. This tube allows pneumatic actuation of the clamping device, which can be integrated into the remote operation of the machine.

Finally, in another advantageous embodiment of the invention , an axially formed shaft is used as the adjusting element.
The accommodating a clamping plate which is eccentric bearing relative to the shaft of the rotational center line in the slit in the shaft, Katayose Serare this clamping plate spring from the center position in the slit at the start turning the shaft on one side of the slit And the tightening plate faces the claw pillow of the torso with the rotation of the shaft.
It is moved perpendicularly to the thin waist after hitting a stop formed in the part to be cut. This configuration offers several advantages. The position of the upholstery can still be corrected at this point by the shaft hitting the clamping plate. As the shaft is turned further, the clamping plate, which is eccentrically supported, moves only perpendicularly to the waist. Since there is no relative movement, the waist stays in that position. Thus,
A high clamping force is achieved.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1A shows an adjusting rod 1 which can be operated in the axial direction. The adjusting rod 1 has several clamping bodies 2 . The clamping body 2 has a wedge-shaped clamping surface 3 on the side and is prestressed on a stopper 4 via a spring 5. When the adjustment rod 1 shifts to the left in the axial direction,
The clamping body 2 has a clamping plate 7 with lateral wedge-shaped clamping surfaces 3.
The pin 6 fixed therein is pressed against it, thereby pressing the clamping plate 7 against the claw pillow 8. Instead of the pin, the clamping plate may be provided with another member having an inclined surface on which the clamping body 2 acts.

Several return springs 9 are embedded in the claw pillow 8 (FIG. 4B). These return springs 9 return the tightening plate 7 to the initial position via the guide bolt 11 when the pressure against the stopper is loosened. The nail pillow 8 is provided with several guide bolts 11. These guide bolts 11
Have one bearing 10 each. These bearings 10
Accommodates an adjustment rod 1. The guide bolt 11 is locked to the claw pillow 8 by a holding ring 13 (FIG. 1B).

FIGS. 2 and 3 show the adjusting rod 1 in the initial position or the use position. As shown in FIG. 2, clamping
The mounting body 2 is prestressed between the two stoppers 4 by a spring 5. In this position, the clamping plate 7
Since there is a gap between the pillow 8 and the nail pillow 8, the thin waistline 14 can be easily inserted.

The adjustment rod moves axially by a small distance. In this case, the tightening operation is roughly divided into three stages. First, the idle stroke of the adjusting rod 1 is performed. At this time, the fastening plate 7 is not moved. Next, a tightening process is performed. Here, the body tension 14 is applied to the claw pillow 8 by the fastening plate 7. Subsequently, a return stroke of the fastening body 2 is performed. At this time, the fastening member 2 no longer contacts the stopper 4. This guarantees a constant clamping force determined by the spring 5 and the clamping angle. The clamping member 2, which can form the wedge-shaped clamping surface 3 at an angle of, for example, 20 °, acts on the clamping plate 7 via a pin 6 fixed to the clamping plate 7.

By using the wedge effect of the clamping body 2 , a large clamping force can be obtained in the region of the fixed point with little axial force. As can be seen in FIG.
With only a short distance return of the adjustable member, it can enter the position shown in FIG.

There, it can be seen that the waist 14 is tightened without play. The force required to clamp between the clamping plate 7 and the claw pillow 8 is provided by a spring 5. The spring 5 supported by the right stopper 4 presses the wedge-shaped tightening surface 3 against the pin 6. The pin 6 acts on the clamping plate 7. The size of the clamping force, by the axial position on the adjusting rod 1 of the stopper 4 can be adjusted in accordance with the spring characteristic of the spring 5 or the spring package used. By supporting the adjusting rod 1 with a bearing 10 on a guide bolt 11 and guiding the clamping plate 7 through the guide bolt 11, any deformation of the claw pillow 8 is avoided. This is a decisive advantage when transporting the sheet on press.

[0025] Figure 4a and 4b, the clamping member 16 formed as a curved lever 22 the affected ne field is,
It is attached to the nail pillow 8 in a slack state at an angle of about 30 ° with respect to the surface normal . The axial movement of the adjusting rod 15 causes the carrier or stopper 18 to compress the spring 5 or the spring package, so that the bending lever 22
Deviates from that position. The bending lever 22 is supported by the body 32 via the roller body 20 while the adjusting rod 15 moves. Therefore, the fastening plate 7 a connected to the bending lever 22 via the bolt 21 moves toward the claw pillow 8. Again, the spring 5 or the spring package is used to generate a clamping force. Bending lever
The guide member 19 is provided at 22 in the tightening position because it is inclined about 15 ° with respect to the surface normal on the nail pillow 8. The guide member 19 absorbs an axial force generated based on the inclined position of the bending lever 22 .

FIG. 4b shows a clamping plate 7a under spring action.
2 and a sectional view of the bending lever 22 are shown. From this figure, the section of the adjusting rod 15 used and the position of the return spring 9 can be seen.

FIGS. 5 and 6 show a fastening member of another construction.

FIG. 5 shows the eccentric 38 which is moved several millimeters in the axial direction by movement of the adjusting rod. At this time, the eccentric body rolls with respect to the concave portion of the body, and moves the tightening plate toward the claw pillow according to the eccentric position of the bolt.

FIG. 6 shows a similar arrangement in which the clamping member is formed as a cam lever 37. The rolling surface of the cam lever can be formed with a substantially Archimedean spiral profile. As the adjustment rod moves in the axial direction, the cam lever 37 rotates around the bolt. The various radii resulting from the contour applied to the cam lever 37 as the cam lever 37 rotates are used for the movement of the clamping plate.

The arrows marked in FIGS. 5 and 6 indicate this axial movement.

FIG. 7 shows a tightening device that can be manually operated using a spanner with pins. A plurality of cams 26 are arranged side by side on a holding claw shaft 24 with a bearing 25. Engaging portions 27 and 28 are provided on the outer periphery of the cam 26. A curved portion 29 is formed between the engagement portions 27 and 28 as a thick portion. The cam 26 is rotated in the direction of the arrow using a spanner with pins. At this time,
The coned disc spring 55 that generates the tightening force is compressed by the bolt 31 with the stopper guided by the claw pillow 34, and releases the tightening cover 33.

FIG. 8 shows a clamping device in which two profiled bars 41 are received in longitudinal grooves 39 at the front edge 40 of the torso. As the profiled bar 41 pivots to clamp the thin body upholstery 14, the profiled bar 41 is supported by the projections of the barrel 32. Therefore, the nail pillow 34 is not deformed by the action of the force. An intermediate layer 42 is disposed in a contact area between the thin waistliner 14 and the deformed bar 41. The front surface and the back surface of the intermediate layer 42 have different friction coefficients. Therefore, since the coefficient of friction on the side of the intermediate layer 42 facing the deformed bar 41 is small, a small torque is achieved by operating the deformed bar 41. Thereby, a simple operation becomes possible. On the other hand, since the coefficient of friction of the side of the intermediate layer 42 that contacts the waistline 14 is large, a large frictional force is achieved between them. This frictional force makes it possible to reduce the clamping force when equal holding forces are required.
The intermediate layer 42 is detachably fixed to the nail pillow 34 by screws 36.

FIG. 9 shows a tightening device in which a circular cord 49 as an elastic tightening member 45 is embedded in the vertical groove 44 of the circular bar 43. In this configuration, the torque required when the circular cross-section bar 43 pivots is reduced because the coating 56 reduces frictional forces in the area of contact between the waistline 14 and the circular cord 49. On the other hand, the nail pillow 34 and the torso 1
4, a large holding force is realized because of a large frictional force. Polyurethane or a rough surface is used as the coating 57 having a large coefficient of friction. When the circular cross-section bar 43 turns, the friction causes a movement of pulling the body upholstery 14 on the wall surface of the body 32.

FIGS. 10 (a), 10 (b), 10 (c) and 10 (d) show the construction of an elastic fastening member which can be used, for example, for the rod 43 having a circular cross section. The elastic fastening member 45 is housed in the vertical groove 44 of the circular bar 43.

FIG. 10A shows a leaf spring 46 fixed to the outer periphery of the circular bar 43.

FIG. 10B shows a spring support 47 supported by a spring. It is fixed by pins 48 and is movably held in a circular bar. One spring is a spring receiver 47
Is given an initial stress. It is also possible to arrange a plurality of short spring supports side by side, or to use a plurality of springs depending on the desired initial stress.

FIG. 10C shows the circular cord 49 housed in the vertical groove.

Finally, FIG. 10 (d) shows a rod 43 with a circular cross section in which a resilient tube 50 is embedded in a vertical groove 44. This tube is connected to a pressure source, and the pressing force can increase or decrease the strength of tightening the thin waist upholstery 14 to the waist 32.

FIGS. 11A and 11B show a tightening device having a rotatable shaft 51. FIG. Shaft 5
A eccentric bearing 52 is provided on the clamping plate 52. The fastening plate 52 is pressed against the upper edge of the slit 53 by the spring 5. Thereby, the fastening plate 52 is offset from the center position of the slit 53. When the shaft 51 rotates, the fastening plate 52 first contacts the stopper 54 (FIG. 11B). In this adjustment position of the shaft 51,
The position of the upholstery 14 on the torso 32 can still be modified. When the shaft 51 rotates further, the clamping plate 52 can no longer rotate together because it has hit the stopper 54.
The eccentric bearing of the clamping plate 52 on the shaft 51 allows the clamping plate 52 to move perpendicularly to the body tension 14 upon further rotation. The relative movement of the upholstery 14 no longer takes place.

In this configuration, as in the case of the configuration according to FIG. 9 , a coating 57 can be provided in order to increase the frictional force in the contact area between the waist upholstery 14 and the claw pillow. The tightening process can be adjusted by selecting the width of the slit 53 or eccentricity. In addition to using a continuous clamping plate 52,
It is also possible to use individual fastening pieces. If the eccentricities of the individual fastening pieces are different, the fastening can be adjusted by fastening one fastening piece, including the spring element, faster than the other.

[Brief description of the drawings]

FIG. 1 (a) shows an axially operable adjusting rod with a clamping body, and FIG. 1 (b) shows a section along the line II in FIG. 1 (a).

FIG. 2 is a partial view of the adjustment rod in a position where the body tension is released.

FIG. 3 is a partial view of the adjustment rod in a position where the body tension is tightened.

FIG. 4 (a) shows a bending lever which is initially stressed by a spring at a position where a body tension is tightened, and FIG. 4 (b) shows a cross section thereof.

FIG. 5 shows a modification of the fastening member.

[6] FIG. 5 and showing a modification of the same customers.

FIG. 7 shows a clamping device with cams arranged side by side on the gripper shaft.

FIG. 8 shows a profiled bar supported on the front edge of the torso.

FIG. 9 shows a modification of the attachment of the elastic fastening member.

FIGS. 10 (a), (b), (c) and (d) show various configurations of the elastic fastening member.

11 (a) shows the release position of the rotatable shaft with the eccentrically bearing clamping plate, and FIG. 11 (b) shows the clamping position.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1, 15 Adjustment rod 2, Tightening body 3 Tightening surface 4, 18, 54 Stopper 5 Spring 6, 48 Pin 7, 7a, 33, 52 Tightening plate 8, 34 Nail pillow 9 Return spring 10 Bearing 11 Guide bolt 12 Adjusting head 13 Retaining ring 14 Body tension 19 Guide member 20 Roll body 21 Bolt 22 Bending lever 23 Adjusting member 24 Holding claw shaft 25 Bearing 26 Cam 27, 28 Meshing portion 29 Curved portion 30 Pressing portion 31 Bolt with stopper 32 Body 35 End face 36 Screw 37 Cam lever Reference Signs List 38 Eccentric body 39,44 Vertical groove 40 Trunk front edge 41 Deformed cross-section bar 42 Intermediate layer 43 Circular cross-section rod 45 Elastic fastening member 46 Leaf spring 47 Spring receiver 49 Circular cord 50 Tube 51 Shaft 53 Slit 55 Disc spring 56,57 Coating

Claims (13)

(57) [Claims] 1. A device for fixing a thin cladding to a cylinder provided with a gripper mechanism and a nail pillow using a clamping plate in a rotary printing press, wherein the cylinder is axially parallel to a rotation axis. has extending and cylinder gap, in which beginning and end of the barrel tension in the barrel groove is accommodated, and one of the adjusting rod axially movable (1,15) tightening
A mounting plate (7, 7a) is provided in the body groove, and
A plurality of fastening members (2, 1
6), wherein the clamping plates (7, 7a) are actuated by axial movement of the adjusting rods (1, 15). 2. A fastening body having a plurality of fastening members.
It is arranged on adjusting rod (1) as, with the clamping
The clasp (2) has a wedge-shaped clamping surface (3), is prestressed by a spring (5) between the stops (4) and is clamped when the adjusting rod (1) moves axially.
2. The clamping device according to claim 1, wherein the clamping plate is actuated via a pin attached to the plate. 3. A clamping member comprising a plurality of bending levers (2).
2) As a bolt at the end of each bending lever
(21) as an axis so as to be rotatable on the clamping plate (7a).
And rotatably mounted at the other end of the bending lever
It is supported by the body (32) through the roller body (20) that has been shaken, and is connected to the other end of the bending lever and the adjusting rod (15).
It is prestressed by a spring (5) between it and an attached stopper (18) and has an adjusting rod (15).
2. The clamping device according to claim 1 , wherein the clamping plate (7a) clamps the thin body tension (14) as the shaft moves in the axial direction. 4. Various types of stoppers (4) and pins (6)
Depending on the distance, tightening due to the movement of the adjustment rod (1)
The stage of the clamping operation by the plate (7) can be set.
2. The fastening device according to 2. 5. Due to the various distances between the stopper (18) and the bolt (21), the movement of the adjusting rod (15) is accompanied.
The stage of the tightening operation by the tightening plate (7a) is set.
The fastening device according to claim 3, which can be cut. 6. The fastening member is formed as a cam lever (37), according to claim 1 having a non-uniform radius
3. The fastening device according to claim 1. 7. A clamping member clamping device according to claim 1 which is formed as an eccentric (38). 8. A device for fixing a thin body to a cylinder provided with a gripper mechanism and a nail pillow in a rotary printing press, wherein the cylinder extends in an axial direction parallel to a rotation axis. Has,
An adjusting member (26, 41, 41) rotatably supported in the trunk groove, in which the beginning and the end of the trunk are accommodated in the trunk groove ;
43, 51), wherein the end of the thin torso (14) is fastened to the claw pillow (34) by turning the adjusting member. 9. An adjusting member is arranged side by side as a plurality of cams (26) on a gripper shaft (24) having a bearing (25), and between said engaging portions (27, 28) in said cam (26). A curved portion (29) is formed in the area of (2), and the curved portion (29) activates the pressing portion (30) which is given an initial stress by the disc spring (54) , and
The fastening device according to claim 8 , wherein the pressing part (30) moves a bolt (31) with a stopper, and the bolt (31) with a stopper moves a clamping plate (33). 10. The adjusting member is arranged on the body (32) as a circular section bar (43) , said circular section bar (43).
One or more resilient fastening members in the axial direction which is formed in longitudinal groove (44) in (45) is accommodated in the above, the elastic fastening <br/> with member (45) is thin trunk upholstery (14) 9. The fastening device according to claim 8 , wherein the end is fastened to a nail pillow. 11. The elastic fastening member (45) is formed by a screw .
11. The clamping device according to claim 10 , wherein the clamping device is formed as a leaf spring (46) that can be mounted on the surface of the circular cross-section bar (43) . 12. The tightening device according to claim 10 , wherein a tube (50) through which a pressure medium can be fed is provided in the circular bar (43) as the elastic tightening member (45). 13. A shaft (51) as an adjusting member.
Is a slit formed in the axial direction on the shaft (51).
A clamping plate (52) which is eccentrically supported with respect to the rotation center line of the shaft (51) is accommodated in (53) , and the clamping plate (52) is slit at the start of turning of the shaft (51). Slit by spring (5) from the center position in (53)
(53) and Katayose Serare on one side of the, and, the shaft
With the turning of (51), the fastening plate (52) is turned into the body (32).
Of after hitting the stopper (54) formed in a portion facing the pawl pillow (34), according to claim 8 that is allowed move perpendicularly to the clamping plate (52) is thin trunk tension (14) Tightening device.