JPH0675959B2 - Flat plate transfer machine and flat plate transfer method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for producing an intaglio plate surface of a flat plate, which is a type of printing plate for precision intaglio printing, and a method of using the apparatus, and specifically, The present invention relates to a flat plate transfer machine used for transferring a convex image of circular steel to a flat plate by rolling, and a flat plate transfer method performed using the device.

[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 plate cylinder or a flat plate as an intaglio plate is manufactured by rolling using the circular steel.

By the way, the flat plate is made of copper, and when a convex image of circular steel is transferred as a concave image, it becomes a master mold. In this flat plate transfer process, an apparatus has been used in which circular steel is pressed against a flat plate by a function similar to a manual press to perform rolling. And 1m thick
Ni plating of m or more is formed on a flat plate (matrix) in a state close to electroforming, and this is peeled off to obtain a relief plate. Further, an intaglio plate is formed by plating on the basis of this letterpress plate, and this is used as a plate directly used for intaglio printing.

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

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

[Means for Solving the Problems] A flat plate transfer machine of the present invention is a flat plate transfer machine for transferring a convex image formed on a circular steel plate to a flat plate as a concave image, and moves in two directions orthogonal to each other in a horizontal plane. A table on which a flat plate is placed on the upper surface, and a pressure saddle rotatably supporting the circular steel above the table and vertically movable with respect to the table, A hydraulic motor equipped with a servo valve or a proportional control valve, which drives the pressure saddle downward through a first clutch to press the circular steel plate against a flat plate, and interlocks with the pressure saddle through a second clutch. A servomotor that drives the pressure saddle upward to lift the circular steel that is connected and pressed against the flat plate by a predetermined distance, a measuring means that measures the transfer depth of the flat plate due to the descent of the pressure saddle, and a pressure saddle of the pressure saddle. Drive and front And a numerical controller for controlling the movement of the table.

Further, in this flat plate transfer machine, a cam attached to the support shaft of the circular steel, an engaging claw selectively engageable with a notch provided in the cam, and a clutch to the support shaft are provided. It is also possible to provide a circular steel rotary positioning device composed of a driving means that is interlocked and coupled with each other.

Further, the flat plate transfer machine supports a circular steel supported by a supporting shaft so that the circular steel is swingable about a horizontal rotary shaft orthogonal to the supporting shaft, and a horizontal adjustment for arbitrarily setting an inclination angle of the circular steel with respect to the flat plate. A device may be provided.

Further, 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 is provided in the flat plate transfer machine, and the measuring means is made of circular steel and flat plate. First measuring means indicating the position of the stopper set below the position of the pressure saddle at the initial pressure position, and movement of the pressure saddle driven downward from the initial pressure position. You may make it comprised by the 2nd measuring means which measures quantity.

Then, the flat plate transfer method according to the present invention sets the origin of the measuring means in a state where the flat plate 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 the hydraulic motor are controlled and driven to press the circular steel of the pressurizing saddle against the flat plate with a desired pressing force, and the table is moved to form a concave portion having a desired depth on the flat plate. It is characterized in that the circular steel of the pressure saddle is raised by a desired minute size by a servomotor based on the output of the above, and the surface of the flat plate is shaped by moving the table at this position.

[Operation] After adjusting the inclination of the circular steel using the flat plate adjusting device, the table is moved in two directions in the horizontal plane to determine the position of the flat plate,
Next, the pressure saddle is lowered to bring the circular steel into contact with a predetermined position of the flat plate on the table. The numerical control unit controls the pressure of the servo valve or the proportional control valve and the hydraulic motor, and presses the circular steel of the pressurizing saddle against the flat plate with a predetermined initial pressing force via the first clutch. Then, the stopper is raised and brought into contact with the pressure saddle in the initial pressure position, and in this state, the first
And the 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, input the desired instruction value to the numerical control unit and control and drive the servo valve or proportional control valve and the hydraulic motor to lower the pressurizing saddle so that the circular steel plate is applied to the planographic plate with a predetermined pressing force. While pressing, the table is moved in this state to transfer the circular steel image to a flat plate at a desired depth. Next, using the amount of depression of the flat plate measured by the second measuring means as a reference, the numerical control unit raises the circular steel of the pressure saddle by a servomotor by a desired minute dimension, and further, at this position, the table is transferred. The surface condition of the flat plate is shaped by reciprocating in the same direction as the time.

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 depth of the concave portion to be formed on the flat plate is controlled by the numerical controller. Lower the stopper. Then, the pressurizing force by the pressure saddle and the reciprocating motion of the table are appropriately controlled by the numerical controller, 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 the present apparatus, if a circular steel rotary positioning device is used, it is possible to transfer plates of several surfaces onto one flat plate at a precise pitch. That is, before performing the above-mentioned transfer operation, when the cam is rotated by the driving means via the connected clutch with the engaging claw abutting the peripheral surface of the cam with a predetermined force, the position of the notch is changed. 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 table is moved by the numerical control unit to determine the position of the planographic plate, the circular steel plate is lowered and brought into contact therewith, and the clutch and the engaging claw are released to perform the transfer operation. After the completion of the transfer operation, the clutch is connected, the cam and the circular steel are rotated by the driving means, and the engaging claw that is brought into contact with the peripheral surface of the cam with a predetermined force is engaged with another notch. Is fixed at other positions in the direction of rotation. Here, by again operating the table to newly set the position of the flat plate and then performing the transfer, it is possible to precisely form different types of plates on one flat plate at a predetermined pitch.

[Embodiment] A flat plate transfer machine according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10.

In FIGS. 1 to 3, reference numeral 1 denotes a frame installed on the installation floor 2. The frame 1 has a gate shape, and a hydraulic motor 3 serving as a drive source for a pressure saddle, which will be described later, is installed laterally on the upper side of the frame 1 with the drive shaft facing inward. Although not shown in detail, the hydraulic motor 3 is connected to a hydraulic pressure source via a servo valve or a proportional control valve, the driving is performed by the hydraulic pressure source, and the pressure control is performed by an NC (not shown) as a numerical controller. Performed by the device. The hydraulic motor 3 drives a horizontal worm shaft in the gear box 5 at the center of the upper portion of the frame 1 via the first clutch 4. Further, a servo motor 3a for adjusting the position of a pressure saddle 7 described later is provided at a position opposite to the hydraulic motor 3 across the gear box 5. 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. And, in the worm wheel that meshes with the worm of the worm shaft and rotates in the gear box 5,
A screw shaft 6 is provided. The screw shaft 6 is supported by a bearing (not shown) in a vertically downward state, and is inserted through the center of the frame 1 to project downward as shown in FIG. Next, the frame 1 is provided with a substantially box-shaped pressure saddle 7
Is mounted so that it can move vertically. 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,
By selectively switching the first and second clutches 4 and 4a and driving the hydraulic motor 3 or the servomotor 3a to rotate the screw shaft 6, the pressure saddle 7 can be freely moved along the frame 1. Can move up and down.

Next, a substantially frustoconical stand 12 is provided at the center of the lower surface of the upper frame portion 7a of the pressure saddle 7, that is, at the opposite side of the female screw portion 8, and a stopper device provided on the frame 1 side. It is opposed to the stopper 14 of 13. As shown in FIGS. 4 to 6, the stopper device 13 has a servo motor (not shown) and its deceleration mechanism, and can move the stopper 14 up and down within a predetermined range. ing. 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 6, B is a Magnescale (hereinafter, abbreviated 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. A shown in FIG. 1 is the second
It is a Magnescale (hereinafter, abbreviated as scale A) as a measuring means. Although not shown in detail, scale A
Is a slider attached to the pressure saddle 7 and the frame 1
A slider fixed to the frame, and the movement of the slider engaged with the scale is taken out as an electric signal to
The position of the pressure saddle 7 with respect to can be measured.
Further, C shown in FIGS. 4 and 5 is attached to the pressure saddle 7, and is a digital gauge C (hereinafter abbreviated as gauge C) as a measuring means for measuring the distance between the pressure saddle 7 and the stopper 13. ). Gauge C is the upper frame of the pressure saddle 7.
The dog plate is attached to 7a downward, and the pressure saddle 7 is lowered to attach the gauge C to the stopper 14.
When the gage C is brought into contact with the gage 17, the gauge C is compressed within a predetermined size range. Therefore, 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, it is possible 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, but within this measurement range. Gauge C
By setting the fine feed start position, the 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 supporting device 20 provided on the front side of the pressure saddle 7 will be described with reference to FIGS. 7 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
A screw shaft 25 that is manually rotated by the handle 24,
It has an operating screw shaft that meshes with the screw shaft 25 and moves forward and backward as the screw shaft 25 rotates. The other end of the operation screw shaft is connected to a base plate 22 above the swivel pin 21 via a universal joint portion 26. Therefore, if the screw shaft 25 is turned by the handle 24, the operation screw shaft will be
Since the upper portion of 22 is pushed in the direction orthogonal to the swivel pin 21, the base plate 22 rocks and tilts together with the circular steel 34 and the like described later. In the figure, 27 is a measuring means for detecting the inclination of the base plate 22, and 28 is a spring for eliminating backlash between the screw shaft 25 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. Support shaft
30 is a horizontal axis orthogonal to the axis of the swivel pin 21, a pair of bearing bases 31 provided at the lower end of the base plate 22,
It is attached to 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. In the figure
Reference numeral 35 is a nut for fixing the position of the attached circular steel 34.

Next, the base plate 22 is provided with a rotary positioning device 36 for the circular steel 34. First, the base plate 22 is provided with a cylinder 37 via a bracket. This cylinder
The rod 37a is installed with the tip of the rod 37a facing 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. Arm 41
The corners of the are rotatably connected to the base plate 22 side, and the 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 is formed at each position of the formed notches 44 and the corresponding circular steel.
It is fixed to the support shaft 30 with a key with reference to the key groove so that each convex image of 34 has a predetermined positional relationship. next,
On the front side of the base plate 22, a horizontal shaft 46 manually driven by a handle 45 and a vertical shaft 48 interlockingly connected to the horizontal shaft via a bevel gear 47 are provided. Further, on the front side of the base plate 22, a platform scale 49 for installing a drive source of the rotary positioning device 36 is provided so as to be vertically movable, and a nut plate 49a of the platform platform 49 is provided at the lower end of the vertical shaft 48. The threaded parts are engaged. A motor 50 as a drive unit and a drive shaft 52 connected to an output shaft of the motor 50 via a clutch 51 are installed on the platform 49. 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 pulleys 53 and 54, and the driving force of the motor 50 is the clutch 51 and the belt 55.
It is configured to be transmitted to the support shaft 30 via. Then, in this state, the handle 45 is turned to rotate the underframe 49.
By raising and lowering the whole, it is possible to adjust the tension of the belt 55 wound between the pulleys 53, 54. The NC device drives and controls the motor 50 and the cylinder 37 in the rotational positioning device 36 described above. Also,
Since the rotary positioning device 36 selectively and freely indexes two types of convex images formed on the circular steel plate 34, two notches 44 are formed on the cam 43 as shown in the drawing, but the flat plate 60
When there is only one type of convex image to be transferred to the notch 44, only one notch 44 is required.

Next, as shown in FIGS. 1 to 3, a table 61 for setting a flat plate 60 which is a workpiece is provided below the frame 1 and below the circular steel supporting device 20. . The table 61 is movable in a horizontal plane in two directions, a vertical direction and a horizontal direction with respect to the support shaft 30 of the circular steel 34. Although not shown in detail, the table 61 is driven by a ball screw driven by a servo motor and a nut on the table side that meshes with the ball screw, and the servo motor is controlled in synchronization with the driving of the pressure saddle 7 or the like. hand
It is performed by the NC device. Next, around the upper surface of the table 61, a clamp device for securely fixing the rectangular flat plate 60 to be processed is provided. As shown in FIG. 11 and FIG. 12, a table 61 for rolling the circular steel 34
Short sides 60a, 6 of the flat plate 60 orthogonal to the moving direction of (a)
0a is fixed by a clamper 62 having a stepped portion 63. That is, a T-nut 65 is inserted in a groove 64 having an inverted T-shaped section formed on the short side 60a side of the table 61, and a clamper 62 having a stepped portion 63 on the lower surface of the tip is screwed into the T-nut 65. It is inserted in the bolt 66. Further, the T-nut 65 is provided with a set bolt 67, and the head of the set bolt 67 is in contact with the hole 62a of the crumb 62 from below. here,
With the bolt 66 loosened, the T-nut 65 and the clamper 62 are brought close to the flat plate 60 on the table 61 along the groove 64, and the stepped portion 63 of the clamper 62 is locked to the edge of the flat plate 60. Here, if the bolt 66 is screwed downward and the set bolt 67 is adjusted, the edge of the flat plate 60 can be clamped with an appropriate force. Therefore, during the transfer operation, the position of the flat plate 60 does not shift in the rolling direction of the circular steel plate 34. Next, as shown in FIGS. 11 and 13, the long side 60 of the flat plate 60 parallel to the rolling direction of the circular steel 34
The end faces of b and 60b are pressed from both sides of the plate to be fixed in position. That is, a T nut 69 is inserted in a groove 68 having an inverted T-shaped cross section formed on the long side of the table 61, and a bolt 70 screwed into the T nut 69 has a fixing plate 71.
Has been inserted. Also, a block is provided at the outer end of the groove 68.
72 is fixed. A stud bolt 73 for adjustment is provided on the block 72 so as to be movable inward and backward in the same direction as the groove 68, and the tip end thereof can come into contact with the outer end surface of the fixed plate 71. Here, with the bolt 70 slightly loosened, the T nut 69 and the fixed plate 71 are brought close to the flat plate 60 along the groove 68, and the fixed plate 71 is moved to the table 61.
It is placed on the upper surface and brought into contact with the end surface of the flat plate 60. Here, the bolt 70 is screwed in to match the upper limit position of the fixed plate 71 with the upper surface of the table 61, and the stud bolt 73 is further screwed in to press the fixed plate 71 against the end surface of the flat plate 60.
The flat plate 60 can be pressed and fixed from both end surfaces on the long side 60b side with an appropriate force. Therefore, the position of the flat plate 60 on the table 61 does not shift during the transfer operation.

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. It is necessary to determine the mounting position of the circular steel 34 in the circumferential direction 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,
Unprocessed flat plate with clamper 62 and fixed plate 71
Fix 60. Then, the table 61 is moved in two directions orthogonal to each other in the horizontal plane to determine the position of the flat plate.

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 27. Then, the base plate 22 of the circular steel supporting device 20 is fixed to the pressure saddle 7 by the fixing bolt 29 when the posture is adjusted so that the circular steel 34 can be brought into line contact with the flat plate 60 on the table 61 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 flat plate 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 flat plate 60 on the table 61.
The circular steel 34 is brought into contact with, and the circular steel 34 is pressed against the flat plate 60 with a predetermined initial pressure (for example, 250 kgf) under the control of the NC device. Then, in this state, the scales A and B are set to 0. Further, the driving of the cylinder 37 is released to remove the engaging claw 42 from the notch 44 of the cam 43, and the clutch 51 is also cut so that the circular steel 4 can freely roll. Then, if necessary, the table 61 is moved in a direction orthogonal to the support shaft 30 by a required length to locate the convex image of the circular steel 34. in this case,
Since initial pressure is applied to the circular steel 34 and the flat plate 60,
No slippage occurs between the two.

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 pressure (for example, 30
00kgf) to lower the circular steel 34 in the initial pressing position to the flat plate 6
Push further against 0. Note that the relationship between the constant pressurizing force obtained by the hydraulic motor 3 etc. and the control current given to the servo valve or proportional control valve etc. is determined in advance by experiments, and for the NC device the S code is based on this result. Specify the current value with. If you do this,
The pressing force can be made constant regardless of the plate thickness of the flat plate 60, so that 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 pressure condition, the table 61 is moved in the rolling direction of the circular steel 34 by the control of the NC device, and the flat plate is moved from the circular steel 34 to the flat plate.
Transfer the image to 60. At this time, the depth of the concave image formed on the flat plate 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 table 61 and the flat plate 60 by the length of the convex image of the circular steel 34.
Moves and the convex image of the circular steel 34 is transferred once to the flat plate 60 at a desired depth, and the table 61 is stopped at this point. Then, the servo motor 3a is driven by the NC device, and the pressure saddle 7 and the circular steel 34 are made to have a small size (for example, 0.1 m in the above example).
m) Raise. Then, the table 61 and the flat plate 60 are reciprocated several times in the same direction, and the bulges formed around the concave portion of the flat plate 60 are uniformly leveled by the pressing of 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, the surface state of the flat plate 60 can be smoothed out by eliminating this.
In addition, the minute size for lifting the circular steel 34 should be determined experimentally, and the operating time for the pressurizing saddle 7 to rise at a very low speed is set.
Set by inputting to 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 on the flat plate 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 as in the case where the stopper 14 is not used, and in this case, the lowering of the stopper 14 and the transfer operation may be performed in several stages by controlling the NC device or the like. Good. The stepwise plate making / transferring method using the stopper 14 is useful when transferring to a flat plate made of a relatively hard material.

As described above, after transferring the convex image with the circular steel 34 to a predetermined position on the flat plate 60, the clutch 51 is connected again to rotate the cam 43 and the circular steel 34 by the motor 50, and the cam 43 with a predetermined force. By engaging the engaging claw 42 abutting the peripheral surface of 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 is moved to set the flat plate 60 to a new position, and the transfer operation as described above is performed again. By doing so, different types of concave images can be formed on one flat plate 60 at a desired precise pitch. Of course, by using this apparatus, one kind of convex image formed on the circular steel 34 can be precisely transferred onto the flat plate 60 at a predetermined pitch.

[Effect of the Invention] The flat plate transfer machine of the present invention is a flat plate transfer machine for transferring a convex image formed on a circular steel plate to a flat plate as a concave image, and is movable in two directions orthogonal to each other in a horizontal plane, A table on which a flat plate is placed, and a circular steel rotatably supported above the table so as to be rollable along one moving direction of the table and vertically movable with respect to the table. A hydraulic motor that includes a pressure saddle and a servo valve or a proportional control valve, and drives the pressure saddle downward via a first clutch to press the circular steel against a flat plate;
A servo motor that is interlocked with the pressure saddle via a second clutch and drives the pressure saddle upward to lift the circular steel pressed against the flat plate by a predetermined length, and transfer of the flat plate 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 transfers, etc. can be arbitrarily selected, and the transfer accuracy and operability are improved.

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

Since the position of the flat plate in the horizontal plane can be precisely set by the table, a large number of concave images can be transferred on one flat plate at a precise pitch.

Further, if this apparatus is provided with the above-described circular steel rotary positioning apparatus, a plurality of convex images provided on one circular steel can be easily selected and indexed with high accuracy.

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

Further, in the flat plate transfer by the flat plate transfer machine, the origin of the measuring means is set in a state where the flat plate 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 is set. Alternatively, the proportional control valve and hydraulic motor are controlled and driven to press the circular steel of the pressurizing saddle against the flat plate with a desired pressing force, and the table is moved to form a concave portion with a desired depth on the flat plate, and then to measure. If the circular steel of the pressure saddle is raised by a desired minute dimension by a servo motor based on the output of the means, and the table is moved at this position to operate the device so as to shape the surface of the flat plate, There is an effect that an intaglio having a desired depth can be transferred with extremely high precision by one transfer operation and the surface of the flat plate can be kept 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 and setting the final dent depth, the dent depth of the flat plate can be precisely set.

[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 left side view of the same embodiment, and FIG. 4 is a pressurizing saddle in the same embodiment. Sectional view, FIG. 5 is a view taken along the arrow V in FIG. 4, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4, and FIG. 7 is a front view of the circular steel supporting device in the same embodiment. FIG. 8 is a plan view of the circular steel supporting device, FIG. 9 is a right side view of the circular steel supporting device, FIG. 10 is a sectional view taken along the line XX in FIG. 7, and FIG. 11 is the same embodiment. FIG. 12 is a plan view of the table, and FIGS. 12 and 13 are sectional views of the clamp device provided on the table. 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 ... Flat plate, 61 ... Table, A ... Magnescale (scale A) as second measuring means, B ... Magnescale (scale B as first measuring means) ), C ... A digital gauge (gauge C) as a measuring means.

Claims (5)

[Claims] 1. A flat plate transfer machine for transferring a convex image formed on a circular steel plate to a flat plate as a concave image, is movable in two directions orthogonal to each other in a horizontal plane, and the flat plate is placed on the upper surface. A first table is provided with a table, a pressurizing saddle that rotatably supports circular steel above the table, and is vertically movable with respect to the table, and a servo valve or a proportional control valve. A hydraulic motor that drives the pressure saddle downward through a clutch to press the steel plate against the flat plate, and a circular steel that is linked to the pressure saddle through a second clutch and is pressed against the flat plate Servo motor for driving the pressure saddle upward to raise the distance, measuring means for measuring the transfer depth of the flat plate by lowering the pressure saddle, and numerical controller for controlling the driving of the pressure saddle and the movement of the table. When Flat transfer machine characterized by comprising a. 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. The flat plate transfer machine according to item 1. 3. A horizontal adjuster for swingably supporting a circular steel supported by a support shaft about a horizontal rotary shaft orthogonal to the supporting shaft and arbitrarily setting an inclination angle of the circular steel with respect to a flat plate. The flat plate transfer machine according to claim 1 or 2, which is provided. 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 flat plate, and driven downward from the initial pressure position. 2. The flat plate 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 flat plate set on the table and the circular steel of the pressure saddle are in contact with each other with a predetermined initial pressing force, and then the servo valve or the proportional control valve and the hydraulic pressure are set. The motor is controlled and driven to press the circular steel of the pressurizing saddle against the flat plate with a desired pressing force, and the table is moved to form a recess of a desired depth on the flat plate, and then the output of the measuring means is used as a reference. The flat plate transfer method is characterized in that the circular steel of the pressure saddle is raised by a desired minute dimension by a servomotor, and the surface of the flat plate is shaped by moving the table at this position.