JPH0675958B2 - Plate cylinder transfer machine and plate cylinder transfer method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for manufacturing a plate cylinder, which is a type of printing plate for precision intaglio printing, and a method of using the apparatus, and more specifically, circular steel. The present invention relates to a plate cylinder transfer machine used for transferring a convex image of No. 1 to a plate cylinder by rolling, and a method for transferring the plate cylinder using the apparatus.

[Prior Art] In intaglio printing on stamps and the like, a concave image is first engraved on a steel plate by hand engraving by a skilled technician, and this is used as an original plate. The following technique is available as one of the methods for producing a printing plate. The original plate is quenched and then rolled to transfer the image of the original plate as a convex image to a cylindrical steel plate. Then, the circular steel on which the convex image is formed is quenched, and a concave cylinder or a flat plate as an intaglio plate is manufactured by rolling using the circular steel.

Now, the plate cylinder is formed in a columnar shape having a supporting central axis on both end faces. The material is generally pure copper, and the peripheral surface to be the transfer surface is mirror-finished. Then, after the convex image of the circular steel is transferred as a concave image on the peripheral surface, the surface is plated with hard chrome, which is set in an intaglio printing machine and used as a printing plate. In the plate cylinder transfer step of transferring an image from the circular steel to the plate cylinder, a device for pressing the circular steel against the peripheral surface of the plate cylinder to perform rolling by an action similar to a manual press has been used.

[Problems to be Solved by the Invention] A conventional plate cylinder transfer device that transfers a convex image of a circular steel to a plate cylinder as a concave image is a manual type, and pressing and rolling operations by the circular steel are manually performed by experience and visual inspection. The control of the depth of the concave image formed on the plate cylinder was also confirmed visually and by touch. Therefore, according to the conventional apparatus, the transfer accuracy is not always high and the operability is not good, and good plate cylinder transfer cannot be achieved unless the operator is proficient in handling and has some experience. There was a problem. Further, when a large number of plates are formed on one plate cylinder at a predetermined pitch, the plate surface pitch accuracy is not sufficient.

[Object of the Invention] According to the present invention, the position, depth, pitch, etc. of the concave image transferred to the plate cylinder can be arbitrarily set and the accuracy is high, and there is little variation in processing accuracy by the operator, and operability is good. Another object of the present invention is to provide a plate cylinder transfer machine, and further to provide a plate cylinder transfer method using the plate cylinder transfer machine.

[Means for Solving the Problems] The plate cylinder transfer machine of the present invention is a plate cylinder transfer machine for transferring a convex image formed on a circular steel to a plate cylinder as a concave image, so that the central axis is horizontal. A table which is supported on the plate cylinder and is rotationally driven, and is movable at least in a direction parallel to the central axis, and a circular steel rollable above the plate cylinder provided on the table. A pressurizing saddle that is pivotally supported on the table and is movable up and down with respect to the table, and a servo valve or a proportional control valve are provided, and the pressurizing saddle is driven downward through a first clutch to produce circular steel. A hydraulic motor that presses against the plate cylinder, and a servomotor that is interlocked with the pressure saddle through a second clutch and that drives the pressure saddle upward to lift the circular steel pressed against the plate cylinder by a predetermined length. , The transfer depth of the plate cylinder due to the descent of the pressure saddle And a numerical control unit for controlling the drive of the pressure saddle and the drive of the table.

Further, in the plate cylinder transfer machine, a cam attached to the support shaft of the circular steel, an engagement claw selectively engageable with a notch provided in the cam, and a clutch on the support shaft are provided. A circular steel rotary positioning device may be provided, which is composed of a driving unit that is interlocked and coupled via the rotary unit.

Further, the plate cylinder transfer machine supports a circular steel supported by a supporting shaft so as to be swingable about a horizontal rotation axis orthogonal to the supporting shaft, and an inclination angle of the circular steel with respect to the plate cylinder is arbitrarily set. A leveling device may be provided.

Further, the plate cylinder transfer machine is provided with a stopper that is movable up and down by a servo motor and that abuts and supports the descending pressure saddle at a preset position. First measuring means for indicating the stopper position set below the position of the pressurizing saddle at the initial pressurizing position of the barrel, and a pressurizing saddle driven downward from the initial pressurizing position. You may make it comprised with the 2nd measuring means which measures the amount of movement.

The plate cylinder transfer method according to the present invention sets the origin of the measuring means in a state where the plate cylinder set on the table and the circular steel of the pressure saddle are brought into contact with each other with a predetermined initial pressing force, and then the servo is performed. The valve or proportional control valve and hydraulic motor are controlled and driven to press the circular steel of the pressurizing saddle against the plate cylinder with a desired pressing force, and the plate cylinder is rotationally driven to a desired depth based on the origin. A recess is formed in the plate cylinder, and then the circular steel of the pressure saddle is raised by a desired minute dimension by a servomotor based on the output of the measuring means, and the plate cylinder is rotated at this position to rotate the plate cylinder. It is characterized by shaping the surface of.

[Operation] After adjusting the inclination of the circular steel using the leveling device, the table is moved to determine the position of the plate cylinder, and then the pressure saddle is lowered to set a predetermined position on the peripheral surface of the plate cylinder on the table. Contact the circular steel with. The numerical control unit controls the servo valve or the proportional control valve and the hydraulic motor, and presses the circular steel of the pressure saddle against the plate cylinder with a predetermined initial pressing force via the first clutch. Then, the stopper is raised and brought into contact with the pressure saddle at the initial pressure position, and in this state, the first and second measuring means are set to zero.

First, in the method of using this device without a stopper, the stopper is lowered to a position where it does not interfere with the operation of the pressure saddle. Next, a desired instruction value is input to the numerical control unit, and the servo valve or the proportional control valve and the hydraulic motor are controlled to lower the pressure saddle to press the circular steel with a predetermined pressing force against the plate cylinder. . In this state, the plate cylinder is rotationally driven on the table to transfer the image of the circular steel to the plate cylinder at a desired depth. Next, based on the depression amount of the plate cylinder measured by the second measuring means, the numerical control unit raises the circular steel of the pressure saddle by a desired small amount by the servomotor. Further, at this position, the surface state of the plate cylinder is shaped by rotating the plate cylinder again on the table.

Next, in the case of using a stopper, after setting both of the measuring means to 0, based on the display of the first measuring means, the numerical controller controls the depth of the concave portion to be formed in the plate cylinder. To lower the stopper. Then, the pressurizing force by the pressure saddle and the rotational driving of the plate cylinder on the table are appropriately controlled by the numerical control unit, and the transfer is performed until a part of the pressure saddle is brought into contact with and supported by the upper end surface of the stopper. In this case, the operations of lowering the stopper and transferring may be performed in several steps.

In this apparatus, if a circular steel rotary positioning device is used, it is possible to transfer a desired number of plates to a single plate cylinder at a desired precise pitch. That is, before performing the above-mentioned transfer operation, when the engaging pawl is brought into contact with the circumferential surface of the cam with a predetermined force and the cam is rotated by the driving means via the connected clutch, the position of the notch The engaging claw engages with the cam, and the cam and the circular steel in interlocking relation with the cam are fixed at a certain position in the rotation direction. In this state, the numerical control unit operates the table to determine the position of the plate cylinder in the rotational direction and the axial direction, lowers the circular steel to bring it into contact with it, and releases the clutch and the engaging claws to perform the transfer operation. . After the transfer operation is completed, the clutch is connected and the cam and the circular steel are rotated again by the driving means, and the engaging claw that is brought into contact with the circumferential surface of the cam with a predetermined force is engaged with another notch. The circular steel is fixed at another position in the rotation direction. If the transfer is performed after the table is operated again to set the transfer position of the plate cylinder, it is possible to accurately transfer different types of plates to one plate cylinder at a desired pitch.

[Embodiment] A plate cylinder transfer machine according to an embodiment of the present invention will be described with reference to Figs.

In FIGS. 1 to 3, reference numeral 1 denotes a frame installed on the installation floor 2. The upper half of the frame 1 has a substantially gate shape, and a hydraulic motor 3 serving as a drive source of a pressure saddle 7 described later is installed laterally on the upper side of the frame 1 with the drive shaft facing inward. There is. Although not shown in detail, the hydraulic motor 3 is connected to a hydraulic power source via a servo valve or a proportional control valve, and its control is performed by a numerical controller (not shown).
It is performed by the NC device. And this hydraulic motor 3
The horizontal worm shaft is driven in the gear box 5 in the center of the upper portion of the frame 1 via the first clutch 4. A pressure saddle 7 to be described later is provided at a position opposite to the hydraulic motor 3 with the gear box 5 interposed therebetween.
A servo motor 3a for adjusting the position of is provided. The servo motor 3a is controlled by the NC device, and drives a horizontal worm shaft in the gear box 5 via the second clutch 4a. A screw shaft 6 is provided on the worm wheel that is rotated by meshing with the worm of the worm shaft in the gear box 5. The screw shaft 6 is supported by a bearing (not shown) in a vertically downward state, passes through the center of the frame 1, and projects downward. Next, a substantially box-shaped pressure saddle 7 is attached to the gate-shaped portion of the frame 1 so as to be vertically movable. A cylindrical female screw member 8 is fixed to a flange portion 8a in a hole penetrating the upper center of the pressure saddle 7, and the male screw portion of the screw shaft 6 meshes with the female screw member 8. is doing. That is, the first and second clutches 4,
4a is selectively switched, the hydraulic motor 3 or the servomotor 3a is driven, and the screw shaft 6 is rotated.
Can freely move up and down along the frame 1.

Next, at the center of the lower surface of the upper frame portion 7a of the pressure saddle 7, that is, on the opposite side of the female screw member 8, a substantially frustoconical stand 12 is provided.
Is provided and faces the stopper 14 of the stopper device 13 provided on the frame 1 side. As shown in FIG. 5, the stopper device 13 has a servomotor 15 and a speed reduction mechanism 16 for the servomotor 15, and the stopper 14 can be moved up and down within a predetermined range. When the pressure saddle 7 descends, the stand 12 is brought into contact with and supported by the stopper 14, so that the lower limit position of the pressure saddle 7 can be determined by determining the position of the stopper 14.
Although the stopper 14 is also operated by the NC device like the pressure saddle 7, the stopper 14 may be operated by a manual mechanism.

Next, the measuring means for measuring the positional relationship between the frame 1, the pressure saddle 7, and the stopper 14 will be described. In FIGS. 5 and 7, B is a magnet scale (hereinafter referred to as scale B) as a first measuring means.
The scale B is composed of a slider B1 provided on the stopper 13 side and a scale B2 fixedly provided on the frame 1 side. The movement of the slider B1 engaged with the scale B2 is taken out as an electric signal, and the scale B is a stopper for the frame 1. 13 positions can be measured. Moreover, FIG. 1, FIG. 4, and FIG.
A shown in FIG. 7 and FIG. 7 is a Magnescale (hereinafter abbreviated as scale A) as a second measuring means. The scale A is composed of a slider A1 attached to the pressure saddle 7 and a scale A2 fixed to the frame 1,
The position of the pressure saddle 7 with respect to the frame 1 can be measured by extracting the movement of the slider A1 engaged with A2 as an electric signal. C shown in FIGS. 4 and 5 is a digital gauge C attached to the pressure saddle 7 as a measuring means for measuring the distance between the pressure saddle 7 and the stopper 13.
(Hereinafter, abbreviated as gauge C). The gauge C is attached downward to the upper frame portion 7a of the pressure saddle 7, and when the pressure saddle 7 is lowered to bring the gauge C into contact with the dog plate 17 provided on the stopper 14, the gauge C has a predetermined size. Since it can be compressed within the range, if the origin position is determined in advance, the distance between the pressure saddle 7 and the stopper 14 can be known within that range. For example, in the descending operation of the pressure saddle 7, when trying to divide the range in which the pressure saddle 7 is fast-forwarded and the range in which the pressure saddle 7 is fed at a fine speed at a position close to the stopper 14, within this measurement range When the fine feed start position is set on the gauge C, a signal necessary for controlling the hydraulic motor 3 and the like can be obtained at that position. Further, in the present embodiment, not only the gauge C but also the measurement results of the scales A and B are returned to the control means such as an NC device and used for closed loop control of the pressure saddle 7 and the stopper 14.

Next, the circular steel support device 20 provided on the front side of the pressure saddle 7 will be described with reference to FIGS. 8 to 10. A base plate 22 is swingably attached to the front surface of the pressure saddle 7 via a swivel pin 21 which is a horizontal rotary shaft, and the pressure saddle 7 has a horizontal plate for adjusting the inclination of the base plate 22. An adjusting device 23 is provided. This device 23
It has a screw shaft that is manually driven to rotate by the handle 24, and an operating screw shaft that meshes with the screw shaft with its axis aligned and that moves forward and backward as the screw shaft 25 rotates. The other end of the operation screw shaft is connected to the swivel pin through the universal joint 26.
It is connected to a base plate 22 above 21. Therefore,
When the screw shaft is turned by the handle 24, the operating screw shaft pushes the upper portion of the base plate 22 in a direction orthogonal to the swivel pin 21, so that the base plate 22 rocks and tilts together with the circular steel 34 and the like described later. Although not shown, a measuring means for detecting the inclination of the base plate 22 is provided between the base plate 22 and the pressure saddle 7. Further, 28 is a spring for eliminating backlash between the screw shaft and the operating screw shaft. Reference numeral 29 denotes a fixing bolt for fixing the base plate 22 to the pressure saddle 7, which is used to fix the base plate 22 after the base plate 22 is tilted to a desired state by the leveling device 23. You can do it. Next, a support shaft 30 is attached to the lower end of the base plate 22. The support shaft 30 is a horizontal shaft orthogonal to the shaft of the swivel pin 21, and a pair of bearing bases 3 provided at the lower end of the base plate 22.
It is attached to 1,31 via a pair of bearings 31a, 31a.
Both ends of the support shaft 30 are rotatably supported by adjustable center bolts 33, 33 provided on the pair of support plates 32, 32. A central portion of the support shaft 30 sandwiched between the pair of bearings 31a, 31a is formed in a tapered shape, and a circular steel plate 34 having a tapered hole can be attached thereto. Reference numeral 35 in the figure is a nut for fixing the position of the attached circular steel 34.

Next, the base plate 22 is a rotary positioning device for the circular steel 34.
36 are provided. First, the base plate 22 is provided with a cylinder 37 via a bracket. This cylinder 37
Is installed with the tip of the rod 37a oriented vertically downward, and the rod 37a can be driven downward along the vertical direction by hydraulic pressure. Reference numeral 38 in the drawing is a spring for returning the rod 37a upward when the supplied oil pressure becomes zero. Further, 39 is a dog plate for setting the operating range of the rod, and 40 is a limit switch for position detection operated by the dog plate 39. Now, one end 41a of an L-shaped arm 41 is pin-coupled to the tip of the rod 37a of the cylinder 37. A corner portion of the arm 41 is rotatably connected to the base plate 22 side, and an engaging claw 42 is provided at the other end 41b of the arm 41 extending downward. As shown in FIG. 9, when the cylinder 37 is driven to rotate the arm 41 counterclockwise, the engaging claw 42 selectively engages with the notch 44 of the cam 43 fixed to the support shaft 30. It is possible to match. It should be noted that the cam 43 includes the positions of the formed notches 44 and the corresponding circular steel plates 34.
Is fixed to the support shaft 30 with a key with the key groove as a reference so that each convex image has a predetermined positional relationship. Next, on the front surface side of the base plate 22, a horizontal shaft 46 manually driven by a handle 45 and this horizontal shaft 46 via a bevel gear 47.
And a vertical shaft 48 interlockingly connected to the. Also,
On the front surface side of the base plate 22, an underframe 49 for installing a drive source at the rotational positioning position 36 is provided so as to be vertically movable, and a nut plate 49a of this underframe 49 is provided at the lower end of the vertical shaft 48. The threaded parts are engaged. And on the underframe 49,
A motor 50 as driving means and a drive shaft 52 connected to an output shaft of the motor 50 via a clutch 51 are installed. A pulley 53 is provided at the outer end of the drive shaft 52, and a pulley 54 is also provided at the end of the support shaft 30. A belt 55 is wound around the two pulleys 53 and 54, and the driving force of the motor 50 is the clutch 51 and the belt.
It is configured to be transmitted to the support shaft 30 via 55. Then, in this state, turn the handle 45 to rotate the underframe.
By raising and lowering the entire 49, the tension of the belt 55 wound between the pulleys 53 and 54 can be adjusted. The NC device drives and controls the motor 50 and the cylinder 37 in the rotational positioning device 36 described above. In addition, this rotary positioning device 36 is
As shown in the figure, two notches 44 are formed on the cam 43 in order to selectively and selectively project different types of convex images. However, when there is only one type of convex image to be transferred to the plate cylinder 60, the notches 44 are One place is enough.

Next, as shown in FIGS. 1 to 3, a table 61 for setting a plate cylinder 60 as a workpiece is provided below the circular steel supporting device 20 adjacent to the frame 1. Has been.
The table 61 is attached to the bed 62 so as to be slidable in a direction parallel to the support shaft 30 of the circular steel 34. The movement of the table 61 in the same direction is performed by a servo motor or the like (not shown), and the NC motor controls the servo motor. Next, a headstock 63 is fixedly provided on one end side of the upper surface of the table 61. The headstock 63 is provided with a horizontal main shaft 64, and a chuck 65 for grasping one central axis 60a of the plate cylinder 60 is provided at an end of the main shaft 64. The main shaft 64 is interlockingly connected to a drive mechanism (not shown), and is configured to be freely rotationally driven by the NC device. A tailstock 66 is provided on the other end of the upper surface of the table 61. The tailstock 66 has a center 67 that can move back and forth in the longitudinal direction of the main shaft 64, and the other center shaft 60 of the plate cylinder 60 attached to the main shaft 64.
It is configured to support a on the end face. Then, the head cylinder 63 and the tailstock 66 are used to form the plate cylinder 60 on the table 61.
When set horizontally, the central axis 60a of the plate cylinder 60 is
It is configured to be parallel to the support shaft 30 of 4 and to be located directly below the support shaft 30. In the figure, 68 is a steady rest for preventing runout due to bending of the plate cylinder 60 or the central axis 60a, and these swing stops 68, 68 and the tailstock 66 are positioned along a direction orthogonal to the central axis 60a. It can be adjusted.

Next, the operation of the configuration described above will be described.

First, by controlling the NC device, etc., the first clutch 4 is connected to drive the servo valve or the proportional control valve and the hydraulic motor 3.
The pressure saddle 7 is controlled to descend and the stopper 14
Is raised and both are brought into contact at a certain position. After setting the gauge C to 0 at this position, the stopper 14 is lowered.

Next, the circular steel 34 on which the convex image is formed is attached to the circular steel supporting device 20 of the pressure saddle 7. That is, the circular steel 34 is inserted into the tapered portion of the support shaft 30 and fixed by the nuts 35 from both sides, but at this time, it is attached to the support shaft 30 in a predetermined positional relationship via the key and the key groove. The circumferential mounting position of the circular steel 34 needs to be determined with reference to the key groove so that the notch 44 of the cam 43 and a specific convex image formed on the circular steel 34 have a constant positional relationship. . By doing so, it is possible to easily index an arbitrary convex image of the circular steel 34 by using the rotary positioning device 36. Next, on the table 61,
The unprocessed plate cylinder 60 is mounted with the center 67 and the chuck 65. Then, the table 61 is used as the central shaft 60a (or the support shaft 30)
The plate cylinder 60 is positioned by moving the plate cylinder 60 along the direction.

Next, in the rotary positioning device 36, the handle 45 is turned to vertically move the underframe 49 appropriately to adjust the tension of the belt 55. Next, the handle 24 is turned to swing the entire circular steel supporting device 20 around the swivel pin 21 with respect to the pressure saddle 7, and the inclination angle of the circular steel 34 is adjusted. At this time, the adjustment amount of the tilt angle can be appropriately determined based on the display of the measuring means (not shown). And the circular steel 34 is the plate cylinder on the table 61.
The base plate 22 of the circular steel supporting device 20 is fixed to the pressure saddle 7 with the fixing bolt 29 when the posture is adjusted so that the line contact can be made with the 60 correctly.

Next, the rotary positioning device 36 of the circular steel 34 is operated. That is, the clutch 51 is connected, the cylinder 37 is operated, and the engaging claw 42
The motor 50 is driven to rotate the cam 43 in a state where the is contacted with the peripheral surface of the cam 43. And one of the notches 44
The motor 50 is stopped when 42 engages and the circumferential position of the cam 43 is determined. In this state, the specific convex image of the circular steel plate 34 corresponding to the notch 44 is indexed to the lower position facing the plate cylinder 60. Also in this state,
The driving force of the cylinder 37 is retained, and the cam 43 and the circular steel
The position of 34 is fixed in the circumferential direction.

Next, the pressure saddle 7 is lowered to move the plate cylinder 60 on the table 61.
The circular steel 34 is brought into contact with, and the circular steel 34 is pressed against the plate cylinder 60 with a predetermined initial pressing force (for example, 250 kgf) under the control of the NC device. Then, the scales A and B are set to 0 in this state. Also, release the drive of the cylinder 37 to notch the cam 43.
The engaging claw 42 is removed from 44, and the clutch 51 is also disconnected so that the circular steel 34 can freely roll. Then, here, if necessary, the main shaft 64 of the table 61 is driven to rotate the plate cylinder 60, and the convex image of the circular steel 34 is cued. In this case, since the initial pressing force is applied between the circular steel 4 and the plate cylinder 60, no slippage occurs between them.

Here, in the method of using this device without the stopper 14, the stopper should be placed at a position that does not interfere with the operation of the pressure saddle 7.
Leave 14 down. Then, input the desired instruction value to the NC device, servo valve or proportional control valve and hydraulic motor 3
Control and drive the pressure saddle 7 to a predetermined pressing force (for example,
3000 kgf), and further presses the circular steel 34 at the initial pressing position against the plate cylinder 60. The relationship between the constant pressing force obtained by the hydraulic motor 3 etc. and the control current given to the servo valve or the proportional control valve etc. is determined in advance by an experiment, and for the NC unit S based on this result
The current value should be specified by the code. By doing so, the pressing force can be made constant regardless of the diameter of the plate cylinder 60, and thus the depth of the recess can be made a desired constant value. For example, under the above-mentioned pressure condition, a recess of about 0.32 mm is formed. Then, under this pressurizing state, the spindle 64 of the table 61 is driven by the control of the NC device to rotate the plate cylinder 60,
The image is transferred from 34 to the plate cylinder 60. At this time, the depth of the concave image formed on the plate cylinder 60 is detected by the scale A, and the downward drive of the pressure saddle 7 is closed-loop controlled by the NC device using this measured value. .

Next, the plate cylinder 60 is rotated by the length of the convex image of the circular steel plate 34, and the convex image of the circular steel plate 34 is transferred once to the plate cylinder 60 at a desired depth. Stop the drive of spindle 64. Then, the servo motor 3a is driven by the NC unit, and the pressure saddle 7 and the circular steel 34
With respect to the plate cylinder 60 (for example, 0.1m in the above example)
m) Raise. Then, drive the main shaft 64 of the table 61,
The plate cylinder 60 is rotated back and forth several times to evenly flatten the bulges formed around the concave portions of the plate cylinder 60 by pressing the circular steel 34. Such swelling is a case where a predetermined depth is formed at one time by a single pressurization, and it tends to occur particularly in the case of a relatively soft material. According to this, this can be eliminated and the surface condition of the plate cylinder 60 can be made smooth. The minute size for lifting the circular steel 34 should be determined experimentally, and is set by inputting the operation time for the pressurizing saddle 7 to rise at a very low speed into the NC device.

Next, when using the stopper 14, the scale A,
After setting both B to 0, based on the scale B display,
The stopper 14 is lowered by the control of the NC device by the depth of the recess to be formed in the plate cylinder 60. Then, the pressurizing force by the pressure saddle 7 and the operation of the table 61 are appropriately controlled by the NC device, and the transfer operation is performed until a part of the pressure saddle 7 is brought into contact with and supported by the upper end surface of the stopper 14. In this case, it is not always necessary to make the pressing force constant, unlike the case where the stopper 14 is not used. In this case, the stopper
The descending and transferring operations of 14 may be performed in several stages by controlling the NC device or the like. The stepwise plate making / transferring method using such a stopper 14 is useful when transferring to a plate cylinder made of a relatively hard material.

As described above, after transferring the convex image with the circular steel 34 to the predetermined position of the plate cylinder 60, the clutch 51 is connected again to rotate the cam 43 and the circular steel 34 by the motor 50, and the cam is rotated with a predetermined force. By engaging the engaging claw 42 abutting on the peripheral surface of 43 with the other notch 44, the circular steel 34 is fixed at another position in the circumferential direction,
Other convex images are indexed. Here, the table 61 and the plate cylinder 60
Then, the plate cylinder 60 is set to a new position by moving it in the direction of the central axis 60a, and the transfer operation as described above is performed again. By doing so, different types of concave images can be formed on one plate cylinder 60 at a desired precise pitch. Of course, if this apparatus is used, one type of convex image formed on the circular steel 34 can be precisely transferred to the plate cylinder 60 at a predetermined pitch.

[Effect of the Invention] The plate cylinder transfer machine of the present invention is a plate cylinder transfer machine for transferring a convex image formed on a circular steel to the plate cylinder as a concave image. A table supported and rotatably driven, and at least movable in a direction parallel to the central axis, and a circular steel rotatably supported above the table and rotatably supported with respect to the table. A pressurizing saddle that is movable up and down, a hydraulic motor that includes a servo valve or a proportional control valve, drives the pressurizing saddle downward through a first clutch, and presses circular steel against the plate cylinder;
Servo motor, which is interlocked with the pressure saddle via the clutch and drives the pressure saddle upward to lift the circular steel pressed against the plate cylinder by a predetermined length, and the transfer of the plate cylinder by lowering the pressure saddle. Since the measuring means for measuring the depth and the numerical controller for controlling the driving of the pressure saddle and the movement of the table are provided, the following effects can be obtained.

Since the operation of each part is performed by numerical control, the pressing force, the transfer length, the number of times of transfer, the transfer position, etc. can be arbitrarily selected, and the transfer accuracy and operability are improved.

The depth of the dent formed on the plate cylinder can be directly measured by the measuring means, and the transfer depth can be easily controlled by utilizing the measurement result.

Since the position to be transferred can be precisely set by the rotation of the plate cylinder and the movement along the rotation axis, it is possible to transfer a large number of concave images to one plate cylinder at a precise pitch.

Further, if the above-described circular steel rotary positioning device is provided in this device, it is possible to easily select and index a plurality of convex images provided on one circular steel with high accuracy.

Further, if the above-mentioned level adjusting device is provided in this device, the parallel adjustment of the circular steel and the plate cylinder can be easily performed.

Further, in the transfer of the plate cylinder by the plate cylinder transfer machine, the origin of the measuring means is set in a state where the plate cylinder set on the table and the circular steel of the pressure saddle are brought into contact with each other with a predetermined initial pressing force. To control and drive a servo valve or a proportional control valve and a hydraulic motor to press the circular steel of the pressurizing saddle against the plate cylinder with a desired pressing force and rotate the plate cylinder to form a recess of a desired depth in the plate cylinder. Then, the circular steel of the pressure saddle is raised by a desired minute dimension by a servomotor based on the output of the measuring means, and the plate cylinder is rotated at this position to shape the surface of the plate cylinder. When the apparatus is operated as described above, it is possible to transfer the intaglio having a desired depth with a very high precision by one transfer operation and to keep the surface of the plate cylinder smooth.

Furthermore, if a stopper and a measuring means for measuring the position of the stopper are provided, the depth of the dent can be gradually increased by the stopper and the measuring means without directly designating the code of the necessary pressing force by numerical control. By setting or setting the final recess depth, it is possible to realize precise setting of the recess depth of the plate cylinder.

[Brief description of drawings]

1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view of the same embodiment, FIG. 3 is a right side view of the same embodiment, and FIG. 4 is a main part front view of the same embodiment. FIG. 5 is a right side view of the main part of the embodiment, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4, and FIG. 7 is a sectional view taken along the line VII-VII in FIG. 8 is a plan view of the circular steel supporting device in the same embodiment, FIG. 9 is a right side view of the circular steel supporting device, and FIG. 10 is a sectional view taken along the line XX in FIG. 3 ... hydraulic motor, 4 ... first clutch, 3a ... servo motor, 4a ... second clutch, 7 ... pressure saddle, 14 ... stopper, 21 ... swivel pin as horizontal axis of rotation , 23 …… Leveling device, 30 …… Support shaft, 34 …… Circle steel, 36 …… Rotational positioning device, 42 …… Engaging claw, 43 …… Cam, 44 …… Notch, 50 …… As drive means Motor, 51 ... clutch, 60 ... plate cylinder, 60a ... central axis, 61 ... table, A ... Magnescale (scale A) as second measuring means, B ... first measuring means Magnescale (scale B), C ... Digital gauge (gauge C) as measuring means.

Claims (5)

[Claims] 1. A plate cylinder transfer machine for transferring a convex image formed on a circular steel plate to a plate cylinder as a concave image, while supporting the plate cylinder such that its central axis is horizontal and rotating the plate cylinder. A table that is movable at least in a direction parallel to the central axis, and a circular steel that is rotatably supported above the plate cylinder provided on the table and is vertically movable with respect to the table. And a servomotor or a proportional control valve, a hydraulic motor for driving the pressurizing saddle downward through the first clutch to press the circular steel against the plate cylinder, and a second clutch. Servo motor for driving the pressure saddle upward in order to raise the circular steel pressed against the plate cylinder by a predetermined length, and the transfer depth of the plate cylinder due to the lowering of the pressure saddle. Measuring means for measuring the Plate cylinder transfer machine, characterized by comprising: a numerical control unit for controlling the driving of the dynamic and the table, the. 2. A cam attached to the support shaft of the circular steel,
A rotary positioning device of circular steel comprising: an engaging claw that is selectively engageable with a notch provided in the cam; and drive means that is interlockingly connected to the support shaft via a clutch. Item 1. The plate cylinder transfer machine according to Item 1. 3. A horizontal adjusting device for supporting a circular steel supported by a supporting shaft so as to be swingable about a horizontal rotary shaft orthogonal to the supporting shaft and arbitrarily setting an inclination angle of the circular steel with respect to a plate cylinder. The plate cylinder transfer machine according to claim 1 or 2, further comprising: 4. A measuring device is provided with a stopper that is movable up and down by a servo motor and that abuts and supports the descending pressure saddle at a preset position.
First measuring means indicating the position of the stopper set below the position of the pressure saddle at the initial pressure position of the circular steel and the plate cylinder as a reference, and driven downward from the initial pressure position. 2. The plate cylinder transfer machine according to claim 1, further comprising second measuring means for measuring the moving amount of the pressure saddle. 5. The origin of the measuring means is set in a state where the plate cylinder set on the table and the circular steel of the pressure saddle are brought into contact with each other with a predetermined initial pressing force, and then the servo valve or the proportional control valve and A hydraulic motor is controlled and driven to press the circular steel of the pressure saddle against the plate cylinder with a desired pressing force, and at the same time, the plate cylinder is rotationally driven to form a recess of a desired depth on the plate cylinder with respect to the origin. Then, based on the output of the measuring means, the circular steel of the pressure saddle is raised by a desired minute dimension by a servomotor, and the plate cylinder is rotationally driven at this position to shape the surface of the plate cylinder. A plate cylinder transfer method characterized by.