JP3592904B2 - Claw seat height adjustment device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a claw seat height adjusting device of a claw device section which grips a sheet in a printing machine or the like and rotationally transfers the sheet.
[0002]
[Prior art]
FIG. 7 is an explanatory diagram of a configuration of a general claw device provided in an intermediate cylinder, FIG. 8 is an explanatory diagram of a problem, and FIG. 9 is an explanatory diagram of a structure of an intermediate cylinder in a sheet-fed printing press.
A general sheet-fed printing press is configured such that a plurality of printing apparatuses are arranged side by side in a sheet advancing direction, and multicolor printing can be performed by changing an ink color supplied to each printing apparatus.
To explain the sheet conveyance, as shown in FIG. 9, the sheet S on which the printing of the first color has been completed is rotated and transported while the front end thereof is gripped by the claw device 42 of the impression cylinder 41, and the intermediate cylinder located downstream. It is delivered to the claw device 44 of 43. Next, the sheet S is transported by the rotation of the intermediate cylinder 43, is delivered to a claw device 46 provided for the impression cylinder 45 of the next printing apparatus, and is rolled and joined in the course of the transport accompanying the rotation of the impression cylinder 45. The second color printing is performed by the ink transfer from the blanket cylinder 47. Hereinafter, the same operation is sequentially repeated to complete the target multi-color printing.
The sheet S used as a printing medium has various thicknesses, from thin paper having a thickness of 0.04 m / m to thick paper having a thickness of about 1.0 m / m.
[0003]
However, as shown in FIG. 7, the conventional claw device 44 of the intermediate body 43 includes a claw 49 that swings and opens about a claw shaft 48 and a claw seat 50 fixed to the body 43, and the seat S The engaging surface between the claw 49 and the claw seat 50 for holding the claw is usually set so that the ideal gap, that is, the lower surface of the claw 49 and the upper surface of the claw seat 50 are parallel when a sheet having the most frequently used thickness is gripped. Further, the relative position between the sheet S and the claw seat of the partner body to which the sheet S is to be delivered is set such that the gap is appropriate and the sheet does not undulate. Therefore, it was possible to stably hold and transfer the sheet S only in the case of a specific sheet thickness (range).
That is, when the sheet thickness of the print sheet S is thinner than the set dimension as shown in FIG. 8A, only the leading end of the nail 49 comes into line contact with the nail seat 50 via the sheet S, and conversely. When the print sheet S is thicker than the set size as shown in FIG. 8C, only the rear end portion of the nail 49 comes into line contact with the nail seat 50 via the sheet S. In each case, as shown in FIGS. 8B and 8D, the sheet S was undulating. That is, as shown in FIGS. 8B and 8D, the claws 49 and the claw seats 50 are alternately arranged with a phase shift in the trunk axis direction so as not to interfere with each other. If the thickness of the sheet S is not equal to the gap between the claw 49 and the claw seat 50, the sheet S will undulate.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional claw device 44, the opposing (gripping) surfaces of the claw 49 and the claw seat 50 are not parallel and do not come into surface contact with each other except for the specific sheet thickness, so that the gripping force is unstable and the sheet S is displaced. For example, there is a problem that the transport state becomes uncertain. In addition, there is a problem that undulation occurs when the sheet is delivered, and the sheet is pulled in the width direction, thereby causing a printing trouble due to deformation.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a claw seat height adjusting device that can print from thin paper to thick paper and is excellent in versatility. .
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems of the prior art, the present invention provides a double-diameter in which two notches in the body axis direction are provided symmetrically on the circumferential surface of the body, and a claw device is provided in each notch. In the torso, a plurality of claw seats are provided along each of the notch portions along the torso axial direction, and a plurality of upper adjustment blocks having slopes in the torso axial direction are attached to the claw seat supports that support the torso seats. , opposite the upper side adjustment block, a plurality of lower adjustment block having a slope which is in contact pair to the slope provided, it provided a connecting member for connecting the lower side adjustment block each other, each of the connecting members of each notch center one position, connects the end of the lever, and secure the pivot shaft to the lever, the other end of one lever is engaged with the adjusting screw, the fulcrum shaft the lever by rotation of the adjustment screw is swung, whereby the connecting member via a respective lever It is moved in the cylinder axis direction, by moving the lower adjusting block, and to move the upper adjustment block in the diameter direction of the cylinder.
In addition, the connecting member is substantially composed of one member, and the lower adjusting block is penetrated therethrough, and the lower adjusting block is positioned on the connecting member with a stopper.
[0006]
The present invention also provides a double-diameter cylinder in which two notches are provided symmetrically in the circumferential direction of the trunk, and a plurality of claw seat devices are provided in each of the notches. A plurality of upper adjustment blocks firmly in contact with the claw seat and having a slope in the body axis direction; a plurality of lower adjustment blocks having a slope in contact with the slope of the upper adjustment block; A connecting member for connecting the adjusting blocks to each other and a moving means for forcibly moving the lower adjusting block in the body axis direction are provided. Further, a fulcrum shaft for connecting the respective connecting members is provided, and the fulcrum shaft is rotated. Another moving means for moving is provided.
[0007]
The present invention is also a device for adjusting the height in the torso radial direction of a plurality of claw seats provided in a circumferential notch portion of the torso along the torso axial direction, the claw seat receiver having the torso and the claw seat fixed thereto. And a height adjusting screw is incorporated between them, so that the claw seat receiver is moved up and down by the adjusting screw.
[0008]
Further, the present invention is a device for adjusting the height in the torso radial direction of a plurality of pawl seats provided in a circumferential notch portion of the torso along the torso axial direction. The height adjusting cam provided with the means is pivotally supported, and a pawl seat is fixed to the outer peripheral surface of the cam and a pawl seat receiver configured to be able to move up and down via a guide is brought into pressure contact with the cam.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
In the pawl seat height adjusting device according to the first embodiment of the present invention, as shown in FIG. 1, a plurality of sets of units in which a pair of adjusting blocks 1 and 2 having inclined surfaces in the trunk axis direction are engaged in opposite directions are provided. The upper adjustment blocks 1 are arranged side by side in the axial direction of the body 3, and are connected to each other via a pawl seat 4. A plurality of pawls (four in FIG. 1) are provided on the pawl seat 4. The seat 5 is fixed. The upper adjustment block 1 has a structure in which the movement of the body 3 in the axial direction is restricted via a guide (not shown), and only vertical movement is allowed.
On the other hand, the lower adjustment block 2 is supported by a bracket 6 that guides the body 3 to slide in the axial direction. In addition, the shaft 7 is penetrated through each of the lower adjustment blocks 2a to 2d, and the position in the body axis direction is fixed by the stopper 8 and connected to each other.
[0010]
One end of a lever 10 swinging about a fulcrum shaft 9 is connected to a part of the shaft 7, and an adjusting screw 11 is connected to another end of the lever 10. A pin 12 rotatably mounted on the lever 10 side of the adjusting screw 11 is screwed into the lever 10, and a rear end of the adjusting screw 11 on the opposite side of the lever 10 is connected to a pin 14 rotatably mounted on the bracket 13. In FIG. 1, reference numeral 15 denotes a retaining ring, and reference numeral 16 denotes a lock nut for fixing the pin 12 and the adjusting screw 11 after the position of the lever 10 is set. By the way, when the body 3 is a double body, the above-mentioned pawl seat elevating means is symmetrically arranged on the opposite side in the diameter direction of the body 3, and each side lever 10 a is provided at both shaft ends of the fulcrum shaft 9 penetrating the body 3. 10b are fixedly connected, and bearings 9a and 9b are installed so that the fulcrum shaft 9 becomes the center of rotation.
[0011]
Thus, in the height adjusting device of the present embodiment, the levers 10, 10 a, 10 b are swung by the rotation of the adjusting screw 11, and the pawl seats located on both diametrical sides of the body 3 via the shared fulcrum shaft 9. 5 can be operated in conjunction with each other. That is, the lower adjustment blocks 2 on each side are moved in the axial direction of the body 3 (in the direction of the arrow in FIG. 1A) by swinging the levers 10a and 10b, whereby the engaged upper adjustment blocks are moved. One group can be moved up and down (moving up and down) in the diameter direction of the body 3. Further, the position of the lower adjustment block 2 in the coaxial direction can be fixed to the shaft 7 by the stopper 8.
[0012]
FIG. 2 shows the claw seat 5 and its related structure. That is, in the height adjusting device of the present embodiment, as shown in the figure, a bolt 17 is provided that penetrates through the adjusting blocks 1 and 2 from the claw seat receiver 4 and is fixed to the bracket 6. The upper adjustment block 1 is pressed downward via a compression spring 18 fitted on the outer periphery, so that the inclined surfaces of the two adjustment blocks 1 and 2 surely come into contact with each other. As described above, since the bolts 17 for guiding the elevation of the upper adjustment block 1 and the compression springs 18 for applying the pressing force are arranged concentrically, they can be moved smoothly without any bending force or the like. I have. The adjusting blocks 1 and 2 have a gate shape in which a groove 19 is formed in the sliding surface thereof in the sliding direction in order to improve the precision of the parts, and are divided into a plurality of blocks having a reduced length. In addition to suppressing distortion during processing, the sliding area is reduced so that reliable rubbing can be achieved.
[0013]
FIG. 3 is an explanatory view of another example of the swinging means of the lever 10. FIG. 3A is a view in which a motor 20 is provided as a rotating means of the adjusting screw 11. According to the present apparatus, the encoder 21 is incorporated in the motor 20 or the position is controlled by incorporating a position detection sensor (not shown) directly in the lower adjustment block 2 or indirectly in the lever 10 or the like. Can be remotely controlled via the control device 22 provided at an arbitrary position.
FIG. 3B shows an example in which a cylinder 23 is provided at one end of the lever 10 instead of the adjusting screw 11, and various types such as a multi-stage air cylinder and a motor cylinder can be adopted as the cylinder 23. . Also in this device, the height of the claw seat can be adjusted by remote control via the control device 22 by providing sensors and the like in the same manner as in FIG. 3A.
[0014]
Since the claw seat height adjusting device according to the first embodiment of the present invention is configured as described above, the lever 10 is swung about the fulcrum shaft 9 by expanding and contracting the adjusting screw 11, and the other end is provided. Can be moved in the axial direction of the body 3. Therefore, the lower adjustment block 2 group arranged side by side on the shaft 7 moves integrally in the axial direction of the body 3, and accordingly, the upper adjustment block 1 along the slope of the lower adjustment block 2 In order to move up and down, the pawl seat 4 and the pawl seat 5 fixed to the upper adjustment block 1 can be moved up and down.
After the height of the claw seat 5 is set, the moving system of the lower adjustment block 2 is fixed by the lock nut 16 screwed to the adjustment screw 11. The amount of movement of the claw seat 5 is set by the angle of the gradient formed in the adjustment blocks 1 and 2 and the amount of movement in the inclination direction. In the present apparatus, a pointer 24 connected to the shaft 7 and a scale plate 25 fixed to the body 3 are provided. The movement of the shaft 7 is visually confirmed by the position where the pointer 24 indicates the scale of the scale plate 25, and the claw seat 5 Can be easily adjusted. .
Incidentally, as shown in FIG. 1D, the amount of elevation H of the claw seat 5 is H = P · tan θ, where the amount of movement P of the lower adjustment block 2 and the gradient θ.
By the above function, the height position of the claw seat can be raised and lowered and fixed at an arbitrary position.
[0015]
Therefore, according to the claw seat height adjusting device according to the first embodiment of the present invention, the following effects can be obtained.
(1) When transferring sheets of various thicknesses, the engaging surfaces of the pawls and the claw seats with the sheets interposed therebetween can be made to bite in parallel, and the transfer and delivery of the sheets can be performed stably without generating a shift. be able to.
(2) It is possible to eliminate the undulation in the cylinder axis direction at the time of claw bite change, that is, when transferring the sheet from the impression cylinder to the intermediate cylinder, etc. Various problems such as deformation, tearing, and scratching can be reduced.
(3) From the above, printing from thin paper to thick paper becomes possible, and versatility is greatly improved.
(4) Since the A-side claw seat and the B-side claw seat of the double body can be simultaneously adjusted, the time for adjusting the claw seat of the double body impression cylinder and the intermediate body can be greatly reduced.
(5) Since the individual lower adjustment blocks are positioned with the stoppers, it is possible to easily correct a processing error or an assembly error of a part, and to maintain the height of each claw seat with high accuracy.
(6) Since there is no claw seat receiver or a bolt for directly fixing the adjustment block to the trunk body, the claw height adjustment operation can be performed easily and in a short time.
[0016]
FIG. 4 is an explanatory view of a claw seat height adjusting device according to a second embodiment of the present invention.
As shown in FIG. 4, in the height adjusting device of the present embodiment, a plurality of height adjusting screws 26 are screwed in the axial direction of the body 3, and the claw seat 5 is fixed at the upper end of the adjusting screw 26. A pawl seat 4 is supported. A guide rod 27 is mounted in parallel with the plurality of adjustment screws 26, and guides the lifting and lowering of the claw seat receiver 4 by the guide rod 27. Further, a compression spring 28 is fitted on the outer periphery of the guide rod 27, and the claw seat receiver 4 is configured to be pressed toward the adjustment screw 26 by the elastic resilience of the compression spring 28. In the figure, reference numeral 29 denotes a lock nut for restricting rotation of the adjusting screw 26 after setting the height. When the body 3 is a double body, a claw seat height adjusting device having the same mechanism is provided on the opposite side in the diameter direction.
[0017]
In the height adjusting device having the above-described configuration, the height of all the height adjusting screws 26 arranged in accordance with the thickness of the sheet S to be gripped is raised and lowered, so that the nail seat 4 fixed to the nail seat 4 5 can be adjusted. Further, the height position of the pawl seat 4 engaging with the upper part of the adjusting screw 26 comes into contact with the upper end of the adjusting screw 26 by the pressing action of the compression spring 28, and is accurately set. In addition, various mechanisms (guide devices) other than the illustrated guide rod 27 can be adopted as the guide means for regulating the lifting and lowering of the pawl seat 4.
This device has an effect that the shape of the components is simple and the manufacturing cost can be reduced.
[0018]
FIG. 5 is an explanatory diagram of a pawl seat height adjusting device according to a third embodiment of the present invention.
As shown in FIG. 5, the height adjusting device according to the present embodiment has a cam (eccentric shaft) 30 which extends along the axial direction of the barrel 3, and has both ends of the cam 30 fixed to the barrel 3. A pawl seat support 4, which is pivotally supported at 31 and to which the pawl seat 5 is fixed, is supported on the outer peripheral surface of the cam 30. A swing arm 33 is attached to a part of a shaft 32 of the cam 30 so that the cam 30 can be rotated via the cylinder 23. The claw seat receiver 4 is configured to be able to move in the direction of contact and separation with the cam 30 via the guide, and to always contact the outer peripheral surface of the cam 30 with a predetermined pressing force. When the body 3 is a double body, a claw seat height adjusting device having the same mechanism is provided on the opposite side in the diameter direction, and the swing arms 33 and 34 are connected to each other by a link 35 penetrating the body 3. Thus, the height of the two claw seats can be adjusted in conjunction with the swing arm 33.
[0019]
In the height adjusting device having the above-described configuration, the height of the pawl seat 4, that is, the pawl seat 5 fixed to the pawl seat receiver 4 corresponding to the thickness of the sheet S to be gripped by rotating the cam (eccentric shaft) 30. Can be adjusted. In the present embodiment, in the case of a double body, the pawl seat height adjusting devices provided on both sides in the diameter direction can be connected by the swing arm 33, the link 35, and the swing arm 34. Height adjustment is possible, greatly improving workability. If a motor or an air cylinder is incorporated in the rotation driving means of the cam 30, the same operation and effects as those of the first embodiment can be obtained, for example, remote operation can be performed outside.
[0020]
All of the above-mentioned claw seat height adjusting devices are provided in the middle part of the trunk. FIG. 6 is a conceptual diagram of the first embodiment, in which the L fulcrum shaft 9 for connecting the A-side claw and the B-side claw to be adjusted simultaneously is provided in the body 3, and is attached to the body side surface 51 ( (Indicated by a broken line), the interval L between the frames 36 can be made shorter and more compact than in the conventional case.
[0021]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the spirit of the present invention. is there.
[0022]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, at the time of sheet | seat transfer of various paper thickness, the engaging surface of a nail | claw and a nail seat can be made to bite through a sheet | seat in parallel, and a stable sheet | seat transfer does not generate | occur | produce without displacement. Swelling in the direction of the cylinder axis during claw bite change, that is, when transferring sheets from the impression cylinder to the intermediate cylinder, etc., preventing misalignment of printing troubles, fan-out, etc. And various problems such as deformation, tearing and scratching of the sheet can be reduced. As described above, the use of the claw seat height adjusting device according to the present invention enables printing from thin paper to thick paper, greatly improving versatility.
[Brief description of the drawings]
FIGS. 1A and 1B are explanatory views of a claw seat height adjusting device according to a first embodiment of the present invention, wherein FIG. 1A is a schematic configuration diagram, FIG. 1B is an overall cross-sectional schematic diagram, and FIG. FIG. 7D is a conceptual diagram showing a moving amount of the upper adjusting block with respect to a moving amount of the lower adjusting block, that is, an ascending and descending amount of the claw seat.
FIG. 2 is a schematic cross-sectional view showing details of an R portion in FIG. 1;
3A and 3B are explanatory diagrams of another example of a height adjusting unit, in which FIG. 3A is a schematic configuration diagram in which a motor is provided as a rotating means of the adjusting screw, and FIG. 3B is at one end of a lever instead of the adjusting screw; It is a schematic structure figure provided with a cylinder.
4A and 4B are explanatory views of a claw seat height adjusting device according to a second embodiment of the present invention, wherein FIG. 4A is a partially sectional front view thereof, and FIG. 4B is a sectional view taken along line II-II of FIG. It is sectional drawing.
5A and 5B are explanatory views of a claw seat height adjusting device according to a third embodiment of the present invention, wherein FIG. 5A is a partial cross-sectional front view thereof, and FIG. 5B is a sectional view taken along line III-III of FIG. FIG. 3C is a cross-sectional view taken along line III-III of FIG.
FIG. 6 is a conceptual diagram showing an arrangement of a trunk and a fulcrum shaft in the first embodiment.
FIG. 7 is a conceptual diagram showing a general claw device provided on the intermediate body.
FIGS. 8A and 8B are explanatory diagrams of a defect of the nail device shown in FIG. 7; FIG. 8A is a conceptual diagram showing a relationship between the nail and the nail seat when the sheet thickness of the print sheet is smaller than a set dimension; ), when the gap t ₁ between clamp seat 50 is greater than the thickness of the sheet S, conceptual diagram showing a state where the undulation in the sheet has occurred, (c) if the paper thickness of the printing sheet is thicker than the set size conceptual diagram showing the relationship between the pawl and the pawl seat, (d), when the gap t ₂ between clamp seat 50 is smaller than the thickness of the sheet S, is a conceptual diagram showing a state in which the undulations on the sheet has occurred .
FIG. 9 is a structural explanatory view showing an intermediate body in the sheet-fed printing press.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Upper adjustment block 2 Lower adjustment block 3 Body 4 Claw seat receiver 5 Claw seat 7 Shaft 8 Clasp 9 Support shaft 10 Lever 11 Adjustment screw 12 Pin 16 Lock nut 17 Bolt 18 Compression spring 20 Motor 22 Control device 23 Cylinder S Seat

Claims (2)

In a double-diameter cylinder in which two notches in the axial direction of the trunk are provided symmetrically on the circumferential surface of the trunk, and a claw device is provided in each notch,
A plurality of claw seats are provided in each of the notch portions along the trunk axis direction, and a plurality of upper adjustment blocks having slopes in the trunk axis direction are mounted on claw seat supports for supporting the claw seats. Opposite to the adjustment block, a plurality of lower adjustment blocks having a slope facing the slope are provided, and a connecting member that connects the lower adjustment blocks to each other is provided,
Each one position of the coupling member at each notch, and connecting the ends of the lever, and secure the pivot shaft into the levers and the other end of one lever engaged with the adjusting screw, rotation of the adjustment screw The lever is swung about a fulcrum axis, thereby moving the connecting member in the trunk axis direction via each lever, moving the lower adjustment block, and moving the upper adjustment block of the trunk. A claw seat height adjusting device characterized in that it moves in a diametrical direction. In a double-diameter cylinder in which two coaxial cutouts are provided symmetrically on the circumferential surface of the drum, and a claw device is provided in each cutout,
A plurality of claw seats are provided in each of the notch portions along the trunk axis direction, and a plurality of upper adjustment blocks having slopes in the trunk axis direction are mounted on claw seat supports for supporting the claw seats. Opposite to the adjustment block, a plurality of lower adjustment blocks having a slope facing the slope are provided, and a connecting member that connects the lower adjustment blocks to each other is provided,
An end of a lever is connected to each of the connecting members at each notch , a fulcrum shaft is fixed to each lever, and the other end of one of the levers is engaged with an adjusting screw. The lever is swung about a fulcrum axis by movement, whereby the connecting member is moved in the body axis direction via each lever, the lower adjustment block is moved, and the upper adjustment block is moved. To move in the diameter direction of
The connecting member is substantially composed of one member, and the lower adjusting block is penetrated therethrough, and the lower adjusting block is positioned on the connecting member with a stopper. Claw seat height adjustment device.

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