Automatic cleaning tank for gravure roller of printing machine

Abstract

The invention discloses an automatic cleaning tank for a gravure roller of a printing machine, and relates to the technical field of corollary equipment of the printing machine, the automatic cleaning tank comprises a mounting box, an ultrasonic plate washing tank is arranged on one side of the mounting box, and the upper end of the ultrasonic plate washing tank is flush with the ground; the multiple positioning holes are evenly formed in the bottom of the ultrasonic plate washing tank in an array mode, positioning guide mechanisms are fixedly arranged at the center positions of the upper ends of the positioning holes, placing bases can be installed in the positioning holes, and shaftless gravure rollers are placed on the placing bases; according to the shaftless gravure roller cleaning device, complete sets of shaftless gravure rollers are sequentially placed on the placing seats, then the shaftless gravure rollers and the placing seats are sequentially transferred to the positioning holes in the ultrasonic plate cleaning tank through the transferring mechanism to be cleaned, the overall cleaning speed and the production efficiency are greatly improved, meanwhile, due to the fact that a plurality of plate rollers can be treated at a time, the cleaning efficiency is greatly improved, and the production cost is reduced. The space and energy input of the ultrasonic plate washing tank are fully utilized, and the cleaning cost of the unit plate roller is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of supporting equipment for printing presses, in particular to an automatic cleaning tank for a gravure roller of a printing press. Background Art

[0002] In the modern printing industry, printing quality and production efficiency have become the key competitiveness of enterprises in the market. Gravure printing is a common printing method, which is widely used for its high quality and high efficiency. Its plate roller is an anilox roller with a gravure pattern on the surface. It is usually made of a hollow metal tube with a pattern of a certain depth and shape on the surface.

[0003] At present, most of the automatic gravure roller cleaning equipment on the market can only process a single gravure roller. After each printing job is completed, multiple rollers used in a set need to be cleaned one by one, which is not only time-consuming and labor-intensive, but also seriously affects production efficiency. For large printing plants, frequent replacement and cleaning of rollers has become one of the key factors restricting the improvement of production capacity.

[0004] At the same time, since most gravure printing plate rollers adopt a shaftless design for easy loading, unloading and storage, when using a shaft-belted cleaning device, each shaftless plate roller must be equipped with at least one set of dedicated shafts. This not only increases the additional hardware cost, but also requires more storage space to store these shafts, and also brings inconvenience in actual operation.

[0005] Secondly, the existing cleaning tank usually places the gravure plate roller horizontally for cleaning. Although it is convenient to operate, it is easy to cause collision between the plate rollers or between the plate roller and the cleaning tank wall in actual application. Especially for the plate roller with fine anilox patterns, any slight scratch may cause irreparable damage, thus affecting the quality of the final printed product.

[0006] Therefore, it is necessary to provide an automatic cleaning tank for the gravure roller of a printing press to solve the technical problems raised in the above-mentioned background technology. Summary of the invention

[0007] In view of the above problems, the present invention provides an automatic cleaning tank for gravure rollers of a printing press, which reduces manual intervention and waiting time by placing a set of shaftless gravure rollers on a placement seat in sequence, and then transferring the shaftless gravure rollers and the placement seat to the positioning holes in an ultrasonic plate washing tank for cleaning through a transfer mechanism. Compared with the traditional single plate roller cleaning method, the overall cleaning speed and production efficiency are greatly improved. At the same time, since multiple plate rollers can be processed at one time, the space and energy input of the ultrasonic plate washing tank are fully utilized, thereby reducing the cleaning cost per unit plate roller.

[0008] To achieve the above object, the present invention provides the following technical solution: an automatic cleaning tank for a gravure roller of a printing press, comprising:

[0009] An installation box, one side of which is provided with an ultrasonic plate washing tank, the upper end of which is flush with the ground;

[0010] A plurality of positioning holes are arranged in a uniform array at the bottom of the ultrasonic plate washing tank, a positioning guide mechanism is fixedly provided at the center of the upper end of each positioning hole, a placement seat can be installed in each positioning hole, and a shaftless gravure roller is placed on the placement seat; and

[0011] The transfer mechanism is fixedly arranged on the installation box located above the ultrasonic plate washing tank, and the transfer mechanism can be used for the transfer and displacement of the placement seat and the shaftless gravure roller.

[0012] In a possible implementation, a filling port and a drain port are provided on the installation box located at the rear side of the ultrasonic plate washing tank, and an ultrasonic generator is installed in the ultrasonic plate washing tank.

[0013] In a possible implementation, the positioning guide mechanism includes a limiting ring fixedly disposed at the bottom and the upper center position of the positioning hole, a guide spring is fixedly disposed inside the limiting ring, and a top platform is fixedly disposed at the upper end of the guide spring.

[0014] In a possible implementation, the top platform is configured in a truncated cone shape.

[0015] In a possible implementation, the placement seat includes a base that can be placed on the positioning hole and the ground, a bracket is fixedly provided on the base, a sleeve is fixedly provided on the upper end of the bracket, an internal threaded hole is provided in the sleeve, and the internal threaded hole is sleeved on the outer side of the guide spring and the top platform.

[0016] In a possible implementation, an axial hole is formed through the axis of the shaftless gravure roller.

[0017] In a possible implementation, the outer diameter of the base is equal to the diameter of the positioning hole, the outer diameter of the bracket is smaller than the outer diameter of the shaftless gravure roller, and the outer diameter of the bracket is larger than the outer diameter of the shaft hole.

[0018] In a possible implementation, the overall height of the limiting collar and the guide spring is equal to the overall height of the base, the bracket and the shaftless gravure roller, and the height of the sleeve is less than the length of the shaft hole.

[0019] In a possible implementation, the transfer mechanism includes:

[0020] A support frame, fixedly arranged on the installation box located above the ultrasonic plate washing tank, a top plate is fixedly arranged on the upper end of the support frame, and a first motor is fixedly arranged on a side of the support frame close to the installation box, a first screw shaft is fixedly arranged on the output end of the first motor, and the first screw shaft is rotatably arranged at the symmetry center of the support frame;

[0021] A positioning frame is installed on the first screw shaft, and a second motor is fixedly installed on one side of the positioning frame, a second screw shaft is fixedly installed on the output end of the second motor, and the second screw shaft is rotatably installed between the positioning frames;

[0022] a shift frame, mounted on the second screw shaft, a third motor being fixedly disposed at the lower end of the shift frame, a third screw shaft being fixedly disposed at the output end of the third motor, and the third screw shaft being rotatably disposed between the shift frames; and

[0023] A guide plate is mounted on the third screw shaft, an auxiliary base is fixedly provided at the lower end of the guide plate, a visual positioning sensor is fixedly provided at the lower end of the auxiliary base, the visual positioning sensor is connected to a central control unit, and a fourth motor is fixedly provided at the upper end of the auxiliary base, a fourth screw shaft is fixedly provided at the output end of the fourth motor, the fourth screw shaft is rotatably provided at the lower end of the auxiliary base, and the central control unit is sequentially connected to the first motor, the second motor, the third motor and the fourth motor.

[0024] In a possible implementation, the fourth screw shaft may be threadedly connected to the internal threaded hole.

[0025] Compared with the prior art, the present invention provides an automatic cleaning tank for the gravure roller of a printing press, which has the following beneficial effects:

[0026] 1. The present invention places a set of shaftless gravure rollers on a placement seat in sequence, and then sequentially transfers the shaftless gravure rollers and the placement seat to the positioning holes in the ultrasonic plate washing tank for cleaning through a transfer mechanism, thereby reducing manual intervention and waiting time. Compared with the traditional single plate roller cleaning method, the overall cleaning speed and production efficiency are greatly improved. At the same time, since multiple plate rollers can be processed at one time, the space and energy input of the ultrasonic plate washing tank are fully utilized, and the cleaning cost per unit plate roller is reduced.

[0027] 2. The present invention can directly clean the shaftless gravure roller, and it is no longer necessary to prepare a dedicated shaft for each roller, which reduces hardware costs and storage space requirements, simplifies the loading and unloading process of the roller, and improves operational flexibility.

[0028] 3. The present invention places the shaftless gravure roller upright on a placement seat and places it upright during the cleaning process in the ultrasonic plate washing tank. The upright placement can effectively avoid the collision between the rollers or between the roller and the wall of the ultrasonic plate washing tank that may occur when the roller is placed horizontally, thereby reducing the risk of deformation or damage to the gravure roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention.

[0030] Figure 1 It is a schematic diagram of the overall structure of an automatic cleaning tank for a gravure roller of a printing press;

[0031] Figure 2 A schematic diagram of the internal structure of a shaftless gravure roller placed in an automatic gravure roller cleaning tank of a printing press;

[0032] Figure 3 It is a structural schematic diagram of a positioning and guiding mechanism in an automatic cleaning tank for a gravure roller of a printing press;

[0033] Figure 4 It is a schematic diagram of the assembly structure of a placement seat and a shaftless gravure roller in an automatic gravure roller cleaning tank of a printing machine;

[0034] Figure 5 It is a structural schematic diagram of a connecting rod unit and a pen body unit in an automatic cleaning tank for a gravure roller of a printing press;

[0035] Figure 6 It is a structural schematic diagram of a placement seat in an automatic cleaning tank for a gravure roller of a printing press;

[0036] Figure 7 It is a schematic diagram of the structure of a transfer mechanism in an automatic cleaning tank for a gravure roller of a printing press;

[0037] : Illustration numerals: 1. installation box; 2. ultrasonic plate washing tank; 3. positioning hole; 4. positioning guide mechanism; 5. transfer mechanism; 6. placement seat; 7. shaftless gravure roller; 41. limiting collar; 42. guide spring; 43. top platform; 61. base; 62. bracket; 63. sleeve; 64. internal threaded hole; 511. support frame; 512. top plate; 513. first motor; 514. first screw shaft; 515. positioning frame; 516. second motor; 517. second screw shaft; 518. shift frame; 519. third motor; 520. third screw shaft; 521. guide plate; 522. auxiliary base; 523. fourth motor; 524. fourth screw shaft. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0040] See also Figure 1-Figure 7 The embodiment of the present invention provides an automatic cleaning tank for a gravure roller of a printing press, which comprises:

[0041] An installation box 1 is provided with an ultrasonic plate washing tank 2 on one side, and the upper end of the ultrasonic plate washing tank 2 is flush with the ground;

[0042] A plurality of positioning holes 3 are arranged in a uniform array at the bottom of the ultrasonic plate washing tank 2. A positioning guide mechanism 4 is fixedly provided at the center of the upper end of each positioning hole 3. A placement seat 6 can be installed in each positioning hole 3, and a shaftless gravure roller 7 is placed on the placement seat 6; and

[0043] The transfer mechanism 5 is fixedly arranged on the installation box 1 located above the ultrasonic plate washing tank 2 , and the transfer mechanism 5 can be used for transferring and shifting the placement seat 6 and the shaftless gravure roller 7 .

[0044] Based on the above technical scheme, when cleaning the shaftless gravure roller 7, the placement seat 6 is first placed on the ground below the transfer mechanism 5, and then the shaftless gravure roller 7 is placed on the placement seat 6. After the transfer mechanism 5 is started, the transfer mechanism 5 sequentially places multiple shaftless gravure rollers 7 in the positioning holes 3 where the shaftless gravure rollers 7 are not placed, and then injects cleaning liquid into the ultrasonic plate washing tank 2, and the ultrasonic plate washing tank 2 cleans multiple shaftless gravure rollers 7 at the same time; after cleaning is completed, the cleaning liquid is discharged, and the transfer mechanism 5 moves each shaftless gravure roller 7 and the placement seat 6 out of the ultrasonic plate washing tank 2, and places them on the ground in order.

[0045] On the basis of the above technical scheme, by placing a set of shaftless gravure rollers 7 on the placement seat 6 in sequence, and then transferring the shaftless gravure rollers 7 and the placement seat 6 to the positioning holes 3 in the ultrasonic plate washing tank 2 for cleaning through the transfer mechanism 5 in sequence, manual intervention and waiting time are reduced. Compared with the traditional single plate roller cleaning method, the overall cleaning speed and production efficiency are greatly improved. At the same time, since multiple plate rollers can be processed at one time, the space and energy input of the ultrasonic plate washing tank 2 are fully utilized, and the cleaning cost per unit plate roller is reduced.

[0046] In a possible embodiment, a filling port and a drain port are provided on the installation box 1 located at the rear side of the ultrasonic plate washing tank 2, and clean organic solvent or water can be injected into the ultrasonic plate washing tank 2 through the filling port, and the solvent or sewage after cleaning the shaftless gravure roller 7 can be discharged from the drain port, and an ultrasonic generator is installed in the ultrasonic plate washing tank 2.

[0047] In a possible embodiment, the positioning guide mechanism 4 includes a limiting ring 41 fixedly arranged at the bottom and the upper center position of the positioning hole 3, a guide spring 42 is fixedly arranged inside the limiting ring 41, and a top platform 43 is fixedly arranged at the upper end of the guide spring 42, and the top platform 43 can be used as a positioning point of the positioning hole 3.

[0048] In a possible embodiment, the top platform 43 is arranged in a truncated cone shape, that is, the undissolved ink or impurities in the solvent or sewage after cleaning the shaftless gravure roller 7 can fall in an umbrella-shaped divergent shape along the side of the truncated cone, thereby preventing the undissolved ink or impurities from entering the interior of the roller 7.

[0049] In a possible embodiment, the placement seat 6 includes a base 61 that can be placed on the positioning hole 3 and the ground, and a bracket 62 is fixedly provided on the base 61. A sleeve 63 is fixedly provided on the upper end of the bracket 62, and an internal threaded hole 64 is provided in the sleeve 63. The internal threaded hole 64 is sleeved on the outer side of the guide spring 42 and the top platform 43.

[0050] In a possible implementation manner, an axial hole is formed through the axis of the shaftless gravure roller 7 .

[0051] In a possible embodiment, the outer diameter of the base 61 is equal to the aperture of the positioning hole 3, and the base 61 can be clamped in the positioning hole 3. The outer diameter of the bracket 62 is smaller than the outer diameter of the shaftless gravure roller 7, and the outer diameter of the bracket 62 is larger than the outer diameter of the shaft hole, so that the bracket 62 cannot completely cover the lower end of the shaftless gravure roller 7, and the bracket 62 can completely close the lower bottom end of the shaft hole. On the one hand, the ink stained on the lower end of the shaftless gravure roller 7 can be cleaned, and on the other hand, undissolved ink can be prevented from entering the shaft hole along the lower end of the shaft hole.

[0052] In a possible implementation, the overall height of the limiting ring 41 and the guide spring 42 is equal to the overall height of the base 61 , the bracket 62 and the shaftless gravure roller 7 , and the height of the sleeve 63 is less than the length of the shaft hole.

[0053] Through the above technical solution, after the shaftless gravure roller 7 and the placement seat 6 are placed in the positioning hole 3, the lower end of the top platform 43 is flush with the upper end of the shaft hole, and the undissolved ink or impurities in the solvent or sewage after the shaftless gravure roller 7 is cleaned can be umbrella-shaped and dropped along the side of the top platform 43, which can effectively reduce the undissolved ink or impurities from entering the shaft hole and accumulating, thereby avoiding pollution to the internal structure of the roller.

[0054] In a possible implementation, the transfer mechanism 5 includes:

[0055] A support frame 511 is fixedly arranged on the installation box 1 located above the ultrasonic plate washing tank 2, a top plate 512 is fixedly arranged on the upper end of the support frame 511, and a first motor 513 is fixedly arranged on a side of the support frame 511 close to the installation box 1, a first screw shaft 514 is fixedly arranged on the output end of the first motor 513, and the first screw shaft 514 is rotatably arranged at the symmetry center of the support frame 511;

[0056] A positioning frame 515 is mounted on the first screw shaft 514, and a second motor 516 is fixedly mounted on one side of the positioning frame 515, a second screw shaft 517 is fixedly mounted on the output end of the second motor 516, and the second screw shaft 517 is rotatably mounted on the positioning frame 515;

[0057] A shift frame 518 is mounted on the second screw shaft 517, a third motor 519 is fixedly disposed at the lower end of the shift frame 518, a third screw shaft 520 is fixedly disposed at the output end of the third motor 519, and the third screw shaft 520 is rotatably disposed on the shift frame 518; and

[0058] The guide plate 521 is mounted on the third screw shaft 520, and an auxiliary base 522 is fixedly provided at the lower end of the guide plate 521, and a visual positioning sensor is fixedly provided at the lower end of the auxiliary base 522, and the visual positioning sensor is connected to the central control unit, and a fourth motor 523 is fixedly provided at the upper end of the auxiliary base 522, and a fourth screw shaft 524 is fixedly provided at the output end of the fourth motor 523, and the fourth screw shaft 524 is rotatably provided at the lower end of the auxiliary base 522, and the central control unit is sequentially connected to the first motor 513, the second motor 516, the third motor 519 and the fourth motor 523.

[0059] By adopting the above technical solution, the visual positioning sensor can locate the shaft hole position of the shaftless gravure roller 7 and feed back to the central control unit. The central control unit controls the position of the guide plate 521 in the three-dimensional plane. This is the existing technology and will not be repeated here. The fourth motor 523 can control the rotation of the auxiliary base 522 in the vertical plane.

[0060] In a possible implementation, the fourth screw shaft 524 may be threadedly connected to the internal threaded hole 64 .

[0061] Through the above technical solution, taking the process of transferring the shaftless gravure roller 7 and the placement seat 6 to the ultrasonic plate washing tank 2 as an example, the visual positioning sensor first monitors the shaft hole position of the shaftless gravure roller 7, and feeds back to the central control unit. The central control unit controls the start of the first motor 513 and the second motor 516, so that the fourth screw shaft 524 moves to the top of the shaft hole. The central control unit then controls the start of the third motor 519, the fourth screw shaft 524 descends, and then controls the start of the fourth motor 523. The fourth screw shaft 524 is threadedly connected with the internal threaded hole 64 during the descending and rotating process. After the fourth motor 523 stops rotating, the central control unit controls the reverse start of the third motor 519. The machine 519, the fourth screw shaft 524, the placement seat 6 and the shaftless gravure roller 7 rise, and then the first motor 513 and the second motor 516 are controlled to start, and the base 61 is moved to the top of the positioning hole 3 where the shaftless gravure roller 7 is not placed, and the third motor 519 is started, the fourth screw shaft 524, the placement seat 6 and the shaftless gravure roller 7 descend, and the sleeve 63 descends along the top platform 43 and the guide spring 42, and the guide spring 42 is compressed until the bottom of the base 61 contacts the bottom of the positioning hole 3, and the fourth motor 523 and the third motor 519 are started in reverse, and the fourth screw shaft 524 disengages from the sleeve 63 while rising, and after the guide spring 42 recovers its deformation, the top platform 43 extends out of the shaft hole.

[0062] On the basis of the above technical scheme, the automatic cleaning tank can directly clean the shaftless gravure roller 7, and there is no need to prepare a dedicated shaft for each plate roller, which reduces the hardware cost and storage space requirements, simplifies the loading and unloading process of the plate roller, and improves the operational flexibility; in addition, by placing the shaftless gravure roller 7 upright on the placement seat 6 and placing it upright during the cleaning process in the ultrasonic plate washing tank 2, the upright placement can effectively avoid the collision between the plate rollers or between the plate roller and the wall of the ultrasonic plate washing tank 2 that may occur when placed horizontally, thereby reducing the risk of deformation or damage to the gravure roller.

[0063] In specific implementation, when the shaftless gravure roller 7 is cleaned, the placement seat 6 is first placed on the ground below the support frame 511, and then the shaft hole of the shaftless gravure roller 7 is sleeved on the sleeve 63, and the bottom of the shaftless gravure roller 7 is placed on the support seat 62, and the visual positioning sensor is started. The visual positioning sensor monitors the shaft hole position of the shaftless gravure roller 7 and feeds back to the central control unit. The central control unit controls the start of the first motor 513 and the second motor 516 to move the fourth screw shaft 524 to the top of the shaft hole. The central control unit then controls the start of the third motor 519, and the fourth screw shaft 524 descends. Then, the fourth motor 523 is controlled to be started. The fourth screw shaft 524 is threadedly connected with the internal threaded hole 64 during the descending and rotating process. After the fourth motor 523 stops rotating, the central control unit controls the reverse start of the third motor 519, and the fourth screw shaft 524, the placement seat 6 and the shaftless gravure roller 7 rise. Then, the first motor 513 and the second motor 516 are controlled to be started to move the base 61 The guide spring 42 is compressed until the bottom of the base 61 contacts the bottom of the positioning hole 3. The fourth motor 523 and the third motor 519 are started in the reverse direction. The fourth screw shaft 524 is disengaged from the sleeve 63 while rising. After the guide spring 42 recovers its deformation, the top platform 43 extends out of the shaft hole. Repeat the above steps until multiple shaftless gravure rollers 7 are placed in the positioning holes 3 where no shaftless gravure rollers 7 are placed in sequence, inject cleaning liquid into the ultrasonic plate washing tank 2 through the filling port, and start the ultrasonic generator, and the ultrasonic plate washing tank 2 cleans multiple shaftless gravure rollers 7 at the same time; after cleaning, discharge the cleaning liquid from the drain port, and operate in reverse, the transfer mechanism 5 moves each shaftless gravure roller 7 and the placement seat 6 out of the ultrasonic plate washing tank 2 and places them on the ground in order, and the plate washing work is completed.

[0064] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic cleaning tank for a gravure roller of a printing press, characterized in that: include: An installation box (1) is provided with an ultrasonic plate washing tank (2) on one side, and the upper end of the ultrasonic plate washing tank (2) is flush with the ground; A plurality of positioning holes (3) are arranged in a uniform array at the bottom of the ultrasonic plate washing tank (2); a positioning guide mechanism (4) is fixedly arranged at the center of the upper end of each positioning hole (3); a placement seat (6) can be arranged in the positioning hole (3), and a shaftless gravure roller (7) is placed on the placement seat (6); and The transfer mechanism (5) is fixedly arranged on the installation box (1) located above the ultrasonic plate washing tank (2), and the transfer mechanism (5) can be used for the transfer and displacement of the placement seat (6) and the shaftless gravure roller (7).

2. The automatic cleaning tank for the gravure roller of a printing press according to claim 1, characterized in that: A filling port and a liquid discharge port are arranged on the installation box (1) located at the rear side of the ultrasonic plate washing tank (2), and an ultrasonic generator is installed in the ultrasonic plate washing tank (2).

3. The automatic cleaning tank for the gravure roller of a printing press according to claim 1, characterized in that: The positioning guide mechanism (4) comprises a limiting collar (41) fixedly arranged at the bottom and the upper center position of the positioning hole (3), a guiding spring (42) is fixedly arranged inside the limiting collar (41), and a top platform (43) is fixedly arranged at the upper end of the guiding spring (42).

4. The automatic cleaning tank for the gravure roller of a printing press according to claim 3, characterized in that: The top platform (43) is arranged in a truncated cone-shaped structure.

5. The automatic cleaning tank for the gravure roller of a printing press according to claim 3, characterized in that: The placement seat (6) comprises a base (61) which can be placed on the positioning hole (3) and the ground, a bracket (62) is fixedly arranged on the base (61), a sleeve (63) is fixedly arranged on the upper end of the bracket (62), an internal threaded hole (64) is arranged in the sleeve (63), and the internal threaded hole (64) is sleeved on the outer side of the guide spring (42) and the top platform (43).

6. The automatic cleaning tank for the gravure roller of a printing press according to claim 5, characterized in that: An axis hole is provided through the axis center of the axisless gravure roller (7).

7. The automatic cleaning tank for the gravure roller of a printing press according to claim 6, characterized in that: The outer diameter of the base (61) is equal to the diameter of the positioning hole (3), the outer diameter of the bracket (62) is smaller than the outer diameter of the shaftless gravure roller (7), and the outer diameter of the bracket (62) is larger than the outer diameter of the shaft hole.

8. The automatic cleaning tank for the gravure roller of a printing press according to claim 6, characterized in that: The overall height of the limiting collar (41) and the guide spring (42) is equal to the overall height of the base (61), the bracket (62) and the shaftless gravure roller (7), and the height of the sleeve (63) is less than the length of the shaft hole.

9. The automatic cleaning tank for the gravure roller of a printing press according to claim 5, characterized in that: The transfer mechanism (5) comprises: A support frame (511) is fixedly arranged on the installation box (1) located above the ultrasonic plate washing tank (2); a top plate (512) is fixedly arranged on the upper end of the support frame (511); a first motor (513) is fixedly arranged on a side of the support frame (511) close to the installation box (1); a first screw shaft (514) is fixedly arranged at the output end of the first motor (513); and the first screw shaft (514) is rotatably arranged at the symmetry center of the support frame (511); A positioning frame (515) is mounted on the first screw shaft (514), and a second motor (516) is fixedly mounted on one side of the positioning frame (515), a second screw shaft (517) is fixedly mounted on the output end of the second motor (516), and the second screw shaft (517) is rotatably mounted between the positioning frames (515); a shift frame (518) mounted on the second screw shaft (517), a third motor (519) being fixedly disposed at the lower end of the shift frame (518), a third screw shaft (520) being fixedly disposed at the output end of the third motor (519), and the third screw shaft (520) being rotatably disposed on the shift frame (518); and A guide plate (521) is mounted on the third screw shaft (520), an auxiliary base (522) is fixedly provided at the lower end of the guide plate (521), a visual positioning sensor is fixedly provided at the lower end of the auxiliary base (522), the visual positioning sensor is connected to a central control unit, and a fourth motor (523) is fixedly provided at the upper end of the auxiliary base (522), a fourth screw shaft (524) is fixedly provided at the output end of the fourth motor (523), the fourth screw shaft (524) is rotatably provided at the lower end of the auxiliary base (522), and the central control unit is sequentially connected to the first motor (513), the second motor (516), the third motor (519) and the fourth motor (523).

10. The automatic cleaning tank for the gravure roller of a printing press according to claim 9, characterized in that: The fourth screw shaft (524) can be threadedly connected to the internal threaded hole (64).

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