JPH0582543U - Printing machine doctor equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The contact point and the set angle of the doctor blade with respect to the plate cylinder can be easily and appropriately set without requiring skill. A blade holder 7 for holding a doctor blade 4, a holder support shaft 8 for supporting the blade holder 7, an elevating / lowering drive means 9 for vertically moving the holder support shaft 8 along a guide member 10, and the holder described above. A swivel displacement means 11 for swiveling the blade holder 7 around the support shaft 8 as a fulcrum, an input means 50 for inputting information of the newly installed plate cylinder 1a, and the elevating and lowering drive means 9 and swivel according to the input information. The operation amount setting means 51 for setting the operation amount of the displacement means 11 and outputting a control signal to the lifting drive means 9 and the turning displacement means 11 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a doctor device for a gravure printing machine or the like, which is equipped with a doctor blade for scraping off unnecessary ink adhering to the peripheral surface of the plate cylinder.

[0002]

[Prior Art]

 In the above-mentioned gravure printing machine, etc., the doctor blade 61 forms a set angle of the doctor blade with respect to the plate cylinder, that is, the tangent line at the contact point a between the plate cylinder 1 and the doctor blade 61 as shown in FIG. In order to obtain a print with an appropriate color tone, the print color tone changes greatly depending on the angle α, and the doctor blade setting angle α with respect to the plate cylinder 1 is set to about 60 ° and the contact point a It is known that it is necessary to change the plate cylinder angle β corresponding to the interval between the printing point c and the printing point c according to the diameter of the plate cylinder 1.

Conventionally, a blade holder 62 for holding the doctor blade 61, an elevating and lowering drive means 64 provided with a rack shaft 63 for vertically moving the blade holder 62, and a blade holder 62 for rotating the support shaft 65 as a fulcrum. A doctor device having an angle adjusting means 66 for adjusting the installation angle of the doctor blade 61 by a dynamic operation and a horizontal driving means 68 including a screw feeding mechanism for horizontally moving the blade holder 62 along a support block 67, It is installed in the printing section of the gravure printing machine.

In the doctor device, when exchanging the plate cylinder 1 in response to a change in the pattern to be printed, the elevating and lowering drive means 64, the angle adjusting means 66 and the horizontal drive means 68 are changed according to the change in the diameter. By operating each of them, the installation position of the doctor blade 61 is adjusted. For example, when replacing the large-diameter plate cylinder 1 shown by the solid line in FIG. 8 with the small-diameter plate cylinder 1a shown by the phantom line, the operation handle 69 of the lifting drive means 64 is changed according to the decrease amount of the diameter. The blade holder 62 is horizontally moved so that the blade holder 62 is lowered to rotate and the operation handle 70 of the horizontal driving means 68 is rotated to move the front end of the doctor blade 61 toward the plate cylinder 1a. By moving it, the plate cylinder angle β is set to an appropriate value corresponding to the plate cylinder diameter, and the operating handle 71 of the angle adjusting means 66 is rotated to adjust the orientation of the doctor blade 61. The set angle α of the doctor blade 61 with respect to the plate cylinder 1a is set to about 60 °.

[0005]

[Problems to be solved by the device]

 In the case of adjusting the installation position of the doctor blade by operating the elevation drive means, angle adjustment means, and horizontal drive means when replacing the plate cylinder with a different diameter as described above, If the actuation amount of the control means and the horizontal drive means changes even a little, the contact point of the doctor blade will deviate from the reference position, so the set angle of the doctor blade will change according to this deviation of the contact point. .. Therefore, in order to set the set angle to an appropriate value, it is necessary to perform a complicated operation of operating the elevating and lowering drive means and the horizontal drive means little by little while checking the position of the doctor blade to prevent displacement of the contact point. Therefore, there is a problem that the skill level is required for the operation and the time required for the work cannot be avoided.

The present invention has been made to solve the above problems, and it is possible to set the contact point and the set angle of the doctor blade with respect to the plate cylinder properly and quickly without requiring skill. The purpose is to provide a doctor device.

[0007]

[Means for Solving the Problems]

 The invention according to claim 1 has a doctor blade that scrapes off unnecessary ink adhering to the peripheral surface of the plate cylinder, and adjusts the installation position of the doctor blade according to the change in the diameter when replacing the plate cylinder. In the doctor device of the printing machine configured as described above, a blade holder that holds the doctor blade, a holder support shaft that supports the blade holder, and a lifting drive means that drives the holder support shaft up and down along a guide member. A swivel displacement means for swiveling the blade holder around the supporting shaft as a fulcrum, an input means for inputting information of a plate cylinder to be newly mounted, and the lifting drive means and swivel displacement means according to the input information. And an operation amount setting means for outputting a control signal to the lifting drive means and the turning displacement means.

According to a second aspect of the present invention, there is provided first detection means for detecting a vertical position of a holder support shaft supporting the blade holder, and second detection means for detecting an installation angle of the blade holder with respect to the holder support shaft. A storage means for storing the detection values of the first and second detection means is provided.

[0009]

[Action]

 According to the present invention as set forth in claim 1, the operation amounts of the lifting drive means and the turning displacement means are set by the operation amount setting means in accordance with the information of the new plate cylinder input from the input means when the plate cylinder is replaced. To be done. Then, the holder drive shaft supporting the doctor holder is displaced up and down by operating the elevator drive means and the swing displacement means in response to a control signal corresponding to the operation amount output from the operation amount setting means. The installation position of the doctor blade is adjusted, and the blade holder is pivotally displaced around the holder support shaft to adjust the set angle of the doctor blade with respect to the plate cylinder.

According to the present invention as set forth in claim 2, a new plate cylinder is installed in the printing unit, and after adjusting the elevation position and installation angle of the doctor blade with respect to the plate cylinder, the holder support shaft is moved up and down. The position and the installation angle are detected by the first and second detecting means, and the detected values are stored in the storage means, so that when the plate cylinder is reset, the ascending / descending drive means and the turning displacement are based on the stored values. The operation amount of the means can be set promptly and appropriately.

[0011]

【Example】

 1 to 3 show a book installed in the printing section of a gravure printing machine or the like that applies ink to a web 3 made of a strip-shaped printed material supplied between the plate cylinder 1 and the impression cylinder 2. 1 shows an embodiment of a doctor device according to the invention. This doctor device comprises a doctor blade 4 for scraping off unnecessary ink adhering to the peripheral surface of the plate cylinder 1, a blade holder 7 composed of a holding part 5 for holding the doctor blade 4 and its holding part 6, and a blade holder 7 for holding the doctor blade 4. A holder support shaft 8 for supporting the blade holder 7, an elevating drive means 9 for elevating and lowering the holder support shaft 8, a guide member 10 for restricting the moving direction of the holder support shaft 8 when elevating and lowering the holder support shaft 8, and the holder described above. A swivel displacement means 11 that swivels the blade holder 7 around the support shaft 8 as a fulcrum, and a reciprocating drive means 12 that reciprocates the holder support shaft 8 and the blade holder 7 in the axial direction of the holder support shaft 8 are provided. ing.

The elevating and lowering drive means 9 includes a pair of left and right rack shafts 14 each having a lower end provided with a support member 13 that rotatably supports a side portion of the holder support shaft 8 and slides the rack support shaft 8. It has a rack holder 15 that supports 14 so as to be able to move up and down, and a pinion gear 17 arranged in the rack holder 15. The pinion gear 17 is integrally connected to a drive shaft 16 by a key 18.

The drive shaft 16 is rotatably supported by the frame 19 via a bearing (not shown). At one end of the drive shaft 16, a drive motor 21 including a servo motor that applies a rotational force to the drive shaft 16 via a speed reducer 20 and a rotary encoder 22 that detects the amount of rotation of the drive shaft 16 are provided. And a first detecting means. While the rotary encoder 22 detects the rotation amount of the drive shaft 16, the drive shaft 16 and the pinion gear 17 are rotationally driven according to the driving force of the drive motor 21 to move the rack shaft 14 up and down. The holder support shaft 8 is configured to be vertically moved along the guide member 10.

The guide member 10 has a pair of guide rails 23 fixed to the inner wall surface of the frame 19 and a slide member 25 fixed to the substrate 24 of the support member 13. It slides along the guide rail 23. The guide member 10 has a contact point a of the doctor blade 4 with respect to the large diameter plate cylinder 1 shown by a solid line in FIG. 1 and a contact point b of the doctor blade 4 with a small diameter plate cylinder 1a shown by an imaginary line. When the doctor blade 4 is arranged substantially parallel to the connecting line A and the doctor blade 4 is slid along the guide member 10 and the orientation of the doctor blade 4 is changed so that the set angle α is constant, the tip of the doctor blade 4 is changed. The parts are configured to contact the contact points a and b, respectively.

That is, the contact points a and b are determined based on the plate cylinder angle β set corresponding to the plate cylinder diameter so that the distance to the printing point c becomes an appropriate value, and Since the set angle α of the doctor blade 4 with respect to 1, 1a is set to a constant value of about 60 °, respectively, the trajectory of the holder support shaft 8 when the doctor blade is moved up and down is changed according to these values. The guide member 10 is obtained and arranged along this locus.

As shown in FIGS. 4 and 5, the turning displacement means 11 is fixed to the connecting member 26 connected to the outer end surface of the supporting member 13 and the outer end portion of the connecting member 26. It has a worm holder 27, a worm gear shaft 28 and a worm wheel 29 arranged in the worm holder 27. The worm wheel 29 is spline-coupled to the outer peripheral portion of a spline shaft 30 fixed to one end of the holder support shaft 8 so as to rotate integrally with the spline shaft 30 and to be slidable in the axial direction. It is supported.

One end of the worm gear shaft 28 is connected to an output shaft of a drive motor 31 composed of a servo motor, and the other end of the worm gear shaft 28 has a rotary encoder 32 for detecting the rotation amount thereof. The second detection means is provided. Then, the rotary encoder 32 detects the rotation amount of the worm gear shaft 28, and the drive motor 31 rotationally drives the worm gear shaft 28 to transmit the driving force to the worm wheel 29, whereby the spline shaft 30 is driven. The holder support shaft 8 is rotationally driven via the holder support shaft 8 to pivotally displace the blade holder 7 and the doctor blade 4.

On the side portion of the spline shaft 30, the rotation angle, that is, the turning displacement angle of the doctor blade 4 is detected and the turning displacement of the doctor blade 4 is regulated beyond a preset range. A cam positioner 33 is provided. A detection plate 34 is attached to the worm holder 27, and a pair of upper and lower reed switches 35, 36 facing the detection plate 34 are attached to the outer wall surface of the frame 19. Then, the lifting drive means 9 detects that the holder support shaft 8 and the worm holder 27 have reached the upper limit position shown by the phantom line in FIG. 5 by the upper reed switch 35, and the holder support shaft 8 and The lower reed switch 36 detects that the worm holder 27 and the like have reached the lower limit position shown by the solid line in FIG.

As shown in FIG. 2, the reciprocating driving means 12 includes a connecting member 37 attached to an end portion on the opposite side of the holder support shaft 8 on which the turning displacement means 11 is installed, and the connecting member 37. Has a crank shaft 38 that is connected to and extends in the vertical direction and a drive motor (not shown) that drives the crank shaft 38. The driving force of the drive motor is supported by the holder via the crank shaft 38 and the connecting member 37. By transmitting to the shaft 8 and slidingly displacing the holder supporting shaft 8 in the axial direction (the direction of arrow B), the blade holder 7 and the doctor blade 4 are reciprocally moved to move the doctor blade 4 to the plate cylinder 1. The contact position is changed to prevent uneven wear of the doctor blade 4 and the like.

At the installation portion of the blade holder 7, as shown in FIG. 3, the blade holder 7 is horizontally moved in the front-rear direction to finely adjust the installation position of the doctor blade 4, and the horizontal movement means 39. An urging means 40 is provided for urging the leading end portion in a direction in which it is pressed against the plate cylinder 1. As shown in FIG. 1, the horizontal moving means 39 is provided with a support block 41 attached to the holder support shaft 8 and a support block rotatably supported by the support block 41. 6 and a screw shaft 42 screwed onto the screw shaft 42, and the handle 43 fixed to the base end portion of the screw shaft 42 is rotated to screw the holding portion 6 to move the blade holder 7 It is configured to move horizontally to finely adjust the installation position of the doctor blade 4.

As shown in FIG. 6, the urging means 40 is an air cylinder installed between a support arm 45 fixed to the holder support shaft 8 and a revolving arm 46 fixed to the support block 41. The air cylinder 47 urges the support block 41 and the blade holder 7 in a direction in which the support block 41 and the blade holder 7 are swung around the holder support shaft 8 so that the front end portion of the doctor blade 7 is pressed with a predetermined pressure contact force. It is designed to be brought into contact with the peripheral surface of the body 1.

Further, as shown in FIG. 7, the doctor device is provided with an input means 50 including a keyboard or the like for inputting information such as a diameter and a type of a newly installed plate cylinder, and the input means 50. The operation amount setting means 51 for setting the operation amounts of the lifting drive means 9 and the turning displacement means 11 according to the information input from the rotary encoder 22 for detecting the operating states of the lifting drive means 9 and the turning displacement means 11. And a storage means 52 for storing the ascending / descending position and installation angle of the doctor blade 4 detected by the second detecting means including the rotary encoder 32.

In the doctor device having the above-described configuration, the set angle α of the doctor blade 4 is a predetermined reference angle (for example, 60 °) when the gravure printing machine is operating, and the tip of the doctor blade 4 has a preset plate cylinder angle β. Is set so that the front end of the doctor blade 4 faces the peripheral surface of the plate cylinder 1 at the contact point a corresponding to By contacting the plate cylinder 1 with a predetermined pressure contact force, the unnecessary ink adhering to the peripheral surface of the plate cylinder 1 is properly scraped off.

Then, for example, when the plate cylinder 1 with a large diameter shown by the solid line in FIG. 1 is replaced with a plate cylinder 1a with a small diameter shown by the phantom line in response to changes in the pattern to be printed, etc. While the holder support shaft 8 is moved to the upper limit position and the like by 9 and the blade holder 7 is pivotally displaced to the retracted position and the like farthest from the plate cylinder 1 by the pivotal displacement step 11, the plate cylinder is printed. After being removed from the section and replaced with a small diameter plate cylinder 1a, the information is input by the input means 50, and a control signal corresponding to this input information is sent from the above-mentioned operation amount setting means 51 to the lifting displacement means 9 and the swing displacement means 11 Output to.

That is, it is determined whether or not the data of the doctor blade 4 for the newly mounted plate cylinder 1a is stored in the storage means 52, and as a result of this determination, the plate cylinder 1a has been used in the past. If it is confirmed that the data is stored in the storage means 52, the operating amounts of the lifting drive means 9 and the turning displacement means 11, that is, the upper limit and the retracted position, based on the stored values. The rotation amount of the drive motor 21 of the elevation drive means 9 and the drive motor 31 of the turning displacement means 11 required to move the doctor blade 4 set to the above position to the position corresponding to the stored data is the operation amount setting means. The data is read out at 51 and a control signal corresponding to this rotation amount is output.

On the other hand, when it is confirmed that the plate cylinder 1a has not been used in the past and the data is not stored in the storage means 52, based on the diameter of the plate cylinder 1a. The vertical displacement of the holder support shaft 8 and the swing displacement of the blade holder 7 are calculated, and a control signal corresponding to the calculated values is supplied to the drive motor 21 of the vertical drive means 9 and the drive motor 31 of the rotary displacement means 11, respectively. Output.

By operating the drive motor 21 of the elevation drive means 9 and the drive motor 31 of the turning displacement means 11 according to the control signal output from the operation amount setting means 51, the holder support shaft 8 is guided to the guide member. The blade holder 7 is moved downward along 10 and the blade holder 7 is pivotally displaced to change the installation angle of the doctor blade 4. Then, while confirming the operating states of the ascending / descending driving means 9 and the turning displacement means 11 according to the detection signals output from the rotary encoders 22 and 32, the operating amount set at the operating amount setting hand 51 is set. According to the above, it is confirmed whether or not both drive motors 21 and 31 have operated.

As a result of the above determination, when it is confirmed that both drive motors 21 and 31 have operated by appropriate amounts and the elevation position and installation angle of the doctor blade 4 have reached appropriate values, The working air is supplied to the air cylinder 47 of the means 40, and the air cylinder 47 applies a biasing force to the support block 41 and the blade holder 7 in the direction of rotating them around the holder support shaft 8 so that the distal end portion of the doctor blade 4 is rotated. Is brought into contact with the peripheral surface of the plate cylinder 1a with a predetermined pressure contact force, and if necessary, the doctor blade 4 is moved back and forth by the horizontal moving means 39 to finely adjust its installation position.

Next, the printing machine is operated to check whether or not unnecessary ink on the plate cylinder 1a has been properly removed by the doctor blade 4, and if the removal function is not appropriate, the above-described lifting drive is performed. The installation position of the doctor blade 4 is finely adjusted by manually operating the means 9 and the turning displacement means 11. After completion of the fine adjustment, according to the detection signal of the first detecting means including the rotary encoder 22 and the detection signal of the second detecting means including the rotary encoder 32, the elevation position and installation angle of the doctor blade 4 are set. Is stored in the storage means 52.

In this way, when the plate cylinder 1 is exchanged for a plate cylinder 1a having a different diameter, the information of the new plate cylinder 1a is inputted by the input means 50, and the operation amount is dealt with according to the input information. Since the control signal is output to the elevating and lowering driving means 9 and the turning and displacing means 11 to operate them, the operator confirms the position of the doctor blade 4 and elevates and lowers the holder supporting shaft 8 to drive the doctor blade. No complicated work such as adjusting the vertical position of 4 is required, and the doctor blade 4 can be easily and accurately moved to a preset contact point b, and at the contact point b, the tip of the doctor blade 4 can be moved. The installation angle of the blade holder 7 can be adjusted so that the section faces the peripheral surface of the plate cylinder 1a at an appropriate set angle α.

Further, as described above, there are provided the first detecting means including the rotary encoder 22 for detecting the operating state of the elevation drive means 9, and the second detecting means including the rotary encoder 32 for detecting the operating state of the turning displacement means 11. When the storage means 52 for storing the detected value is provided, a new plate cylinder 1a is set in the printing section, and it is confirmed that the doctor blade 4 is properly installed on the plate cylinder 1a. At that time, the elevation position and installation angle are stored in the storage means 52, so that the setting of the operation amount when the plate cylinder 1a is mounted again in the printing unit can be quickly and properly set by using the stored data. Can be done to.

Further, in the above embodiment, the guide is substantially parallel to the line A connecting the contact points a and b set so that the plate cylinder angle β has an appropriate value corresponding to the diameter of the plate cylinders 1 and 1a. Since the member 10 is arranged and the orientation of the guide member 10 is set so that the set angle α of the doctor blade 4 at the contact points a and b is 60 °, the holder support shaft 8 is arranged along the guide member 10. The blade holder 4 can be moved in the horizontal direction by an appropriate amount when the blade is driven up and down. Therefore, the doctor blade 4 can be brought into contact with the respective plate cylinders 1 and 1a at the contact points a and b without operating the horizontal moving means 39, and the doctor blade 4 with respect to the plate cylinders 1 and 1a. It is possible to set the respective set angles α of 1 to appropriate values of about 60 °.

Further, as shown in the above embodiment, a spline shaft 30 is provided at one end of the holder support shaft 8 so that the worm wheel 29 of the turning displacement means 11 is slidably supported on the spline shaft 30. Therefore, the driving force of the reciprocating drive means 12 for reciprocally driving the holder support shaft 8 in its axial direction is prevented from being transmitted to the rack shaft 14, the worm wheel 29, the drive motor 31, etc. There is an advantage that it is possible to prevent the occurrence of vibration due to reciprocating driving.

In the above embodiment, the guide member 10 is arranged so that the set angle α of the doctor blade 4 with respect to each plate cylinder 1, 1a is 60 °. The set angle α may be changed according to the diameter of the plate cylinders 1 and 1a by changing the installation angle. Further, in the above embodiment, the case where the elevating and lowering driving means 9 of the blade holder 7 is arranged above the plate cylinder 1 has been described, but the elevating and lowering driving means 9 may be arranged below the plate cylinder 1. ..

Further, in the above-described embodiment, the cam positioner 33 regulates the operation amount of the swiveling displacement means 11 so as to regulate the swiveling displacement of the doctor blade 4 beyond a preset range. However, a detection plate is provided at the end of the spline shaft 30 and a predetermined number of reed switches are arranged around the detection plate, and the operation amount of the turning displacement means 11 is determined according to the detection signal output from the reed switch. May be configured to detect.

Further, in order to properly set the pressure contact force of the doctor blade 4 with respect to the plate cylinder 1 so that clearer printing is performed, an urging force adjusting means for adjusting the urging force of the urging means 40 is provided. It is desirable that the urging force adjusting means is provided so that the contact pressure of the doctor blade 4 with respect to the plate cylinder 1 can be adjusted. In this case, after adjusting the pressure contact force of the doctor blade 4 to an appropriate value and storing the value in the storage means, the pressure contact force of the doctor blade 4 is re-used when the plate cylinder 1 is used again. The value corresponding to can be set quickly and easily.

[0037]

[Effect of the device]

 As described above, according to the present invention, when the plate cylinder is exchanged for a plate cylinder having a different diameter, the information of the new plate cylinder is input by the input means, and the operation amount is responded to according to the input information. Since the control signal is output to the lifting drive means and the turning displacement means to operate them, the operator can check the position of the doctor blade and drive the holder support shaft up and down to change the vertical position of the doctor blade. No complicated work such as adjustment is required, and the doctor blade can be easily and accurately moved to a preset contact point, and the tip of the doctor blade abuts the peripheral surface of the plate cylinder at this contact point. Thus, the installation angle of the blade holder can be adjusted. Therefore, the setting position of the doctor blade with respect to the plate cylinder can be automatically adjusted quickly and appropriately without requiring skill in the work.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a doctor device according to the present invention.

FIG. 2 is a side view of the doctor device.

FIG. 3 is a plan view showing a main part of the doctor device.

4 is a cross-sectional view taken along the line CC of FIG.

5 is a cross-sectional view taken along line DD of FIG.

6 is a sectional view taken along line EE of FIG.

FIG. 7 is a block diagram showing a configuration of a control unit.

FIG. 8 is a front view showing a conventional example of a doctor device.

[Explanation of symbols]

 1, 1a Plate cylinder 4 Doctor blade 7 Blade holder 8 Holder support shaft 9 Elevating drive means 11 Turning displacement means 22 Rotary encoder (first detection means) 32 Rotary encoder (second detection means) 50 Input means 51 Actuation amount setting means 52 Means of storage

Claims (2)

[Scope of utility model registration request] 1. A doctor blade for scraping off unnecessary ink adhering to the peripheral surface of the plate cylinder is provided, and when the plate cylinder is replaced, the installation position of the doctor blade is adjusted according to the change in the diameter. In the doctor device of the printing machine, the blade holder for holding the doctor blade,
A holder support shaft for supporting the blade holder, an elevating and lowering drive means for vertically moving the holder support shaft along a guide member, and a swivel displacing means for swiveling and displacing the blade holder with the support shaft as a fulcrum are newly mounted. Input means for inputting the information of the plate cylinder, and the operation amount setting for setting the operation amounts of the lifting drive means and the turning displacement means according to the input information and outputting a control signal to the lifting drive means and the turning displacement means. A doctor device for a printing press, characterized in that: 2. A first detecting means for detecting an ascending / descending position of a holder supporting shaft for supporting the blade holder, a second detecting means for detecting an installation angle of the blade holder with respect to the holder supporting shaft, and the first and second detecting means. Storage means for storing the detection value of the detection means is provided.
Doctor device of the described printing machine.