Printing plate roller clamping device

Abstract

The utility model discloses a printing plate roller clamping device, belongs to the technical field of printing plate roller machining, and solves the problems that a ball head and a ball head seat of an existing device are movably connected, a printing plate roller cannot be supported, stress at the joint of an external driving mechanism and the printing plate roller is large, and the external driving mechanism is prone to being damaged. Comprising an axial adjusting mechanism, a clamping assembly is installed on the right side of the axial adjusting mechanism, the axial adjusting mechanism comprises a ball cup, a hemispherical groove is formed in the side face of the ball cup, a ball is embedded in the hemispherical groove, and the clamping assembly clamps one end of a printing plate roller. And the other end of the printing plate roller is connected with an external driving mechanism, a limiting assembly is installed on the side wall of the ball cup, the ball can be limited and fixed in the semispherical groove through the limiting assembly, stress on the connecting position of the external driving mechanism and the printing plate roller can be relieved, and then the service life of the external driving mechanism is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of printing plate cylinder processing, and particularly relates to a clamping device for a printing plate cylinder. Background Technique

[0002] The printing plate cylinder is processed from a steel column through multiple processes. During the processing, a clamping device is required to clamp both ends of the printing plate cylinder to facilitate subsequent processing operations. Common printing plate cylinder sizes include models with diameters of 28mm, 32mm, 40mm, 50mm, and 55mm. Among them, the printing plate cylinders with diameters of 32mm and 40mm are the most widely used.

[0003] After retrieval, in the application with the patent application number 202222375132.5, an end clamping device for printing plate cylinder processing is disclosed, belonging to the technical field of printing plate cylinder processing. The end clamping device includes a driven box, an axial adjustment mechanism, and a clamping mechanism; one end of the axial adjustment mechanism is rotatably connected to the driven box through a ball bearing, and the other end is ball-connected to the clamping mechanism; the clamping mechanism clamps one end of the printing plate cylinder, and the other end of the printing plate cylinder is connected to an external driving mechanism. During processing, the external driving mechanism drives the printing plate cylinder, the clamping mechanism, and the axial adjustment mechanism to rotate.

[0004] Although the end clamping device for printing plate cylinder processing can eccentrically rotate around the axis through the axial adjustment mechanism to compensate for the axis deviation of the printing plate cylinder, the ball head and the ball head seat of the end clamping device for printing plate cylinder processing are movably connected and cannot support the printing plate cylinder, resulting in a large force at the connection between the external driving mechanism and the printing plate cylinder, and it is easy to damage the external driving mechanism.

[0005] Therefore, we propose a clamping device for a printing plate cylinder. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides a clamping device for a printing plate cylinder, which solves the problem that the ball head and the ball head seat of the existing device are movably connected and cannot support the printing plate cylinder, resulting in a large force at the connection between the external driving mechanism and the printing plate cylinder, and it is easy to damage the external driving mechanism.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: A clamping device for a printing plate cylinder includes an axial adjustment mechanism. A clamping assembly is installed on the right side of the axial adjustment mechanism. The axial adjustment mechanism includes a ball head seat. A hemispherical groove is formed on the side surface of the ball head seat, and a ball head is embedded in the hemispherical groove. The clamping assembly clamps one end of the printing plate cylinder, and the other end of the printing plate cylinder is connected to an external driving mechanism.

[0008] A through hole communicating with the hemispherical groove is formed in the side wall of the ball head seat, and a limiting component is installed on the side wall of the ball head seat;

[0009] The limiting component includes a cylinder fixedly installed on the side wall of the axial adjustment mechanism. The output end of the cylinder extends into the through hole and fixedly installs a pressing plate with a circular cross-section. The diameter of the cross-section of the pressing plate is the same as that of the through hole. The pressing plate is movably sleeved inside the through hole. An arc-shaped groove is arranged on the side of the pressing plate away from the cylinder. The arc-shaped groove fits the outer surface of the ball head, and a rubber pad is pasted inside the arc-shaped groove.

[0010] Preferably, the axial adjustment mechanism further includes a connecting column fixedly installed on the left end face of the ball head seat. A connecting rod is fixedly installed on the side of the ball head away from the ball head seat. A clamping component is fixedly installed at the end of the connecting rod away from the ball head. Among them, by clamping one end of the printing plate roller with the clamping component, the ball head can rotate inside the hemispherical groove, and then drive the clamping component to deflect, so as to compensate for the axis deviation of the printing plate roller.

[0011] Preferably, the clamping component includes a four-jaw chuck fixedly installed at the end of the connecting rod away from the ball head. A circular groove is formed in the middle of the right side face of the four-jaw chuck. A first clamping ring and a second clamping ring are movably sleeved inside the circular groove. Among them, the first clamping ring and the second clamping ring can translate inside the circular groove.

[0012] Preferably, the diameter of the circular groove is 50 mm, the inner diameters of the first clamping ring and the second clamping ring are 40 mm and 32 mm respectively. One end of a spring telescopic rod is fixedly installed on the side walls of the first clamping ring and the second clamping ring, and the other end of the spring telescopic rod is fixedly installed on the side wall of the circular groove. The circular groove, the first clamping ring and the second clamping ring are concentrically arranged. The depth of the circular groove is greater than the thickness of the first clamping ring and the spring telescopic rod. Among them, one end of the printing plate roller can be clamped inside the circular groove, the first clamping ring or the spring telescopic rod with the same diameter as it. When the printing plate roller is clamped inside the circular groove, the end face of the printing plate roller will squeeze the first clamping ring and the second clamping ring, and then compress the spring telescopic rod, so as to push the first clamping ring and the spring telescopic rod into the circular groove. When one end of the printing plate roller is clamped inside the first clamping ring, the second clamping ring can be pushed into the circular groove. The printing plate roller with the same inner diameter as the second clamping ring can be directly clamped inside the second clamping ring.

[0013] Preferably, a driving assembly is provided at one end of the connecting column away from the ball head seat. The driving assembly includes a hydraulic cylinder. An installation groove is formed at the output end of the hydraulic cylinder. One end of the connecting column away from the ball head seat is rotationally sleeved inside the installation groove through a bearing ring. Herein, the connecting column can rotate inside the installation groove. Through the driving assembly, the driving assembly and the clamping assembly can be pushed towards one end of the printing plate roller, so as to clamp printing plate rollers of different lengths.

[0014] Preferably, a mounting plate is fixedly installed at one end of the hydraulic cylinder away from the connecting column. Mounting holes are formed at the four corners on the side of the mounting plate. Herein, by using screws to pass through the mounting holes, the device can be installed at a specific position.

[0015] The utility model provides a printing plate roller clamping device, which has the following beneficial effects:

[0016] 1. For this printing plate roller clamping device, the ball head can be limited and fixed inside the hemispherical groove through the limiting assembly. When the printing plate roller rotates by an appropriate angle for processing, the pressing plate is pushed by the air cylinder to contact the arc surface of the ball head, and then the ball head is clamped and limited, which can avoid the situation that the ball head can shake randomly inside the hemispherical groove. It can support the clamping assembly and the end of the printing plate roller clamped by the clamping assembly, which is beneficial to reducing the stress at the connection between the external driving mechanism and the printing plate roller, and then increasing the service life of the external driving mechanism. It solves the problem that the ball head and the ball head seat of the existing device are movably connected and cannot support the printing plate roller, resulting in a large stress at the connection between the external driving mechanism and the printing plate roller and being prone to damage the external driving mechanism.

[0017] 2. For this printing plate roller clamping device, one end of the printing plate roller can be clamped inside a circular groove, a first clamping ring or a spring telescopic rod with the same diameter as it. When the printing plate roller is clamped inside the circular groove, the end face of the printing plate roller will squeeze the first clamping ring and the second clamping ring, and then the spring telescopic rod is compressed, and the first clamping ring and the spring telescopic rod can be pushed towards the inside of the circular groove. When one end of the printing plate roller is clamped inside the first clamping ring, the second clamping ring can be pushed towards the inside of the circular groove, and the printing plate roller with the same inner diameter as the second clamping ring can be directly clamped inside the second clamping ring. It can adapt to printing plate rollers of different sizes, so as to quickly clamp the printing plate roller at the middle part of the side of the four-jaw chuck, and then the printing plate roller can be clamped and fixed.

[0018] 3. For this printing plate roller clamping device, the driving assembly can push the driving assembly and the clamping assembly towards one end of the printing plate roller, so as to clamp printing plate rollers of different lengths. Description of the Drawings

[0019] Figure 1 is the structural schematic diagram of the utility model;

[0020] Figure 2 is a schematic exploded view of the split structure of the present utility model;

[0021] Figure 3 is a schematic exploded view of the split structure of the ball head seat and the limit assembly of the present utility model;

[0022] Figure 4 is a schematic view of the clamping assembly structure of the present utility model.

[0023] In the figure: 1. Axial adjustment mechanism; 11. Ball head seat; 12. Hemispherical groove; 13. Ball head; 14. Connecting rod; 15. Connecting column; 16. Through hole; 2. Driving assembly; 21. Hydraulic cylinder; 22. Installation groove; 3. Clamping assembly; 31. Four-jaw chuck; 32. Circular groove; 33. First clamping ring; 34. Second clamping ring; 35. Spring telescopic rod; 4. Limit assembly; 41. Cylinder; 42. Pressing plate; 43. Arc-shaped groove; 5. Mounting plate; 51. Mounting hole. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1:

[0026] As Figures 1-4As shown in the figure: It includes an axial adjustment mechanism 1. A clamping assembly 3 is installed on the right side of the axial adjustment mechanism 1. The axial adjustment mechanism 1 includes a ball head seat 11. A hemispherical groove 12 is formed on the side surface of the ball head seat 11. A ball head 13 is fitted in the hemispherical groove 12. One end of the printing plate cylinder is clamped by the clamping assembly 3. The other end of the printing plate cylinder is connected to an external driving mechanism. A through hole 16 communicating with the hemispherical groove 12 is formed on the side wall of the ball head seat 11. A limiting assembly 4 is installed on the side wall of the ball head seat 11. The limiting assembly 4 includes a cylinder 41 fixedly installed on the side wall of the axial adjustment mechanism 1. The output end of the cylinder 41 extends into the interior of the through hole 16 and is fixedly installed with a pressing plate 42 with a circular cross-section. The diameter of the cross-section of the pressing plate 42 is the same as that of the through hole 16. The pressing plate 42 is movably sleeved in the interior of the through hole 16. An arc-shaped groove 43 is provided on the side of the pressing plate 42 away from the cylinder 41. The arc-shaped groove 43 fits the outer surface of the ball head 13. A rubber pad is pasted inside the arc-shaped groove 43. The axial adjustment mechanism 1 further includes a connecting column 15 fixedly installed on the left end face of the ball head seat 11. One side of the ball head 13 away from the ball head seat 11 is fixedly installed with a connecting rod 14. One end of the connecting rod 14 away from the ball head 13 is fixedly installed with a clamping assembly 3. The ball head 13 can be limited and fixed inside the hemispherical groove 12 through the limiting assembly 4. When the printing plate cylinder rotates at an appropriate angle for processing, the pressing plate 42 is pushed by the cylinder 41 to contact the arc surface of the ball head 13, and then the ball head 13 is clamped and limited, which can avoid the situation that the ball head 13 can shake randomly inside the hemispherical groove 12, and can support the clamping assembly 3 and the end of the printing plate cylinder clamped by the clamping assembly 3, which is beneficial to reducing the force on the connection between the external driving mechanism and the printing plate cylinder, and then increasing the service life of the external driving mechanism;

[0027] Embodiment 2:

[0028] As Figure 1 、 2As shown in FIGS. 3 and 4: The clamping assembly 3 includes a four-jaw chuck 31 fixedly installed at one end of the connecting rod 14 away from the ball head 13. A circular groove 32 is formed in the middle of the right side surface of the four-jaw chuck 31. A first clamping ring 33 and a second clamping ring 34 are movably sleeved inside the circular groove 32. The diameter of the circular groove 32 is 50 mm, and the inner diameters of the first clamping ring 33 and the second clamping ring 34 are 40 mm and 32 mm respectively. One end of a spring telescopic rod 35 is fixedly installed on the side walls of both the first clamping ring 33 and the second clamping ring 34, and the other end of the spring telescopic rod 35 is fixedly installed on the side wall of the circular groove 32. The circular groove 32, the first clamping ring 33, and the second clamping ring 34 are concentrically arranged. The depth of the circular groove 32 is greater than the thickness of the first clamping ring 33 and the spring telescopic rod 35. One end of the printing plate cylinder can be clamped inside the circular groove 32, the first clamping ring 33, or the spring telescopic rod 35 with the same diameter as it. When the printing plate cylinder is clamped inside the circular groove 32, the end face of the printing plate cylinder will squeeze the first clamping ring 33 and the second clamping ring 34, and then compress the spring telescopic rod 35, and the first clamping ring 33 and the spring telescopic rod 35 can be pushed into the circular groove 32. When one end of the printing plate cylinder is clamped inside the first clamping ring 33, the second clamping ring 34 can be pushed into the circular groove 32. The printing plate cylinder with the same inner diameter as the second clamping ring 34 can be directly clamped inside the second clamping ring 34, which can adapt to printing plate cylinders of different sizes, so as to quickly clamp the printing plate cylinder in the middle of the side of the four-jaw chuck 31, and then the printing plate cylinder can be clamped and fixed;

[0029] Embodiment 3:

[0030] As Figures 1-2 shown: A driving assembly 2 is provided at one end of the connecting column 15 away from the ball head seat 11. The driving assembly 2 includes a hydraulic cylinder 21. An installation groove 22 is formed at the output end of the hydraulic cylinder 21. One end of the connecting column 15 away from the ball head seat 11 is rotatably sleeved inside the installation groove 22 through a bearing ring. One end of the hydraulic cylinder 21 away from the connecting column 15 is fixedly installed with a mounting plate 5. Mounting holes 51 are formed at the four corners of the side surface of the mounting plate 5. Through the driving assembly 2, the driving assembly 2 and the clamping assembly 3 can be pushed to move towards one end of the printing plate cylinder, so as to clamp printing plate cylinders of different lengths.

[0031] Working principle and usage process of the utility model: For this printing plate roller clamping device, during use, one end of the printing plate roller is connected to an external driving device. The hydraulic cylinder 21 is started to push the axial adjustment mechanism 1 and the clamping assembly 3 towards the other end of the printing plate roller, and then the other end of the printing plate roller is clamped and fixed by the clamping assembly 3. The end of the printing plate roller can be clamped inside the second clamping ring 34, the first clamping ring 33 or the circular groove 32 that matches its specifications. Then, the external driving mechanism drives the printing plate roller to rotate for processing. During the processing, when the printing plate roller rotates by an appropriate angle for processing, the cylinder 41 is started to push the pressing plate 42 into contact with the arc surface of the ball head 13, and then the ball head 13 is clamped and limited, which can avoid the situation that the ball head 13 can shake randomly inside the hemispherical groove 12, and can support the clamping assembly 3 and the end of the printing plate roller clamped by the clamping assembly 3.

[0032] The foregoing has shown and described the basic principles, main features and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the utility model, the utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A printing plate roller clamping device, comprising an axial adjustment mechanism (1), a clamping assembly (3) being installed on the right side of the axial adjustment mechanism (1), the axial adjustment mechanism (1) comprising a ball head seat (11), a hemispherical groove (12) being provided on the side of the ball head seat (11), a ball head (13) being embedded in the hemispherical groove (12), the clamping assembly (3) clamping one end of the printing plate roller, and the other end of the printing plate roller being connected to an external driving mechanism; Features: The side wall of the ball head seat (11) is provided with a through hole (16) connected to the hemispherical groove (12), and the side wall of the ball head seat (11) is installed with a limit assembly (4); The limiting assembly (4) comprises a cylinder (41) fixedly mounted on the side wall of the axial adjustment mechanism (1); the output end of the cylinder (41) extends to the interior of the through hole (16) and is fixedly mounted with a clamping plate (42) having a circular cross section; the cross-sectional diameter of the clamping plate (42) is the same as that of the through hole (16); the clamping plate (42) is movably mounted inside the through hole (16); an arc-shaped groove (43) is provided on a side of the clamping plate (42) away from the cylinder (41); the arc-shaped groove (43) is in contact with the outer surface of the ball head (13); and a rubber pad is pasted inside the arc-shaped groove (43).

2. A printing plate roller clamping device according to claim 1, characterized in that: The axial adjustment mechanism (1) further comprises a connecting column (15) fixedly mounted on the left end surface of the ball head seat (11); a connecting rod (14) is fixedly mounted on the side of the ball head (13) away from the ball head seat (11); and a clamping assembly (3) is fixedly mounted on the end of the connecting rod (14) away from the ball head (13).

3. A printing plate roller clamping device according to claim 2, characterized in that: The clamping assembly (3) comprises a four-jaw chuck (31) fixedly mounted on an end of a connecting rod (14) away from the ball head (13); a circular groove (32) is provided in the middle of the right side surface of the four-jaw chuck (31); a first clamping ring (33) and a second clamping ring (34) are movably sleeved inside the circular groove (32).

4. A printing plate roller clamping device according to claim 3, characterized in that: The diameter of the circular groove (32) is 50 mm, the inner diameters of the first clamping ring (33) and the second clamping ring (34) are 40 mm and 32 mm respectively, one end of a spring telescopic rod (35) is fixedly mounted on the side walls of the first clamping ring (33) and the second clamping ring (34), and the other end of the spring telescopic rod (35) is fixedly mounted on the side wall of the circular groove (32), the circular groove (32), the first clamping ring (33) and the second clamping ring (34) are concentrically arranged, and the depth of the circular groove (32) is greater than the thickness of the first clamping ring (33) and the spring telescopic rod (35).

5. The printing plate roller clamping device according to claim 2, characterized in that: A drive assembly (2) is provided at one end of the connecting column (15) away from the ball head seat (11), and the drive assembly (2) comprises a hydraulic cylinder (21). An output end of the hydraulic cylinder (21) is provided with a mounting groove (22), and the end of the connecting column (15) away from the ball head seat (11) is rotatably mounted inside the mounting groove (22) via a bearing ring.

6. A printing plate roller clamping device according to claim 5, characterized in that: A mounting plate (5) is fixedly mounted on one end of the hydraulic cylinder (21) away from the connecting column (15), and mounting holes (51) are provided at four corners of the side surface of the mounting plate (5).

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