Plate cylinder assembly of curved surface printing machine

Abstract

The utility model is suitable for the technical field of printing, and provides a plate cylinder assembly of a curved surface printing machine, which comprises a plate cylinder body, a mounting cylinder is arranged in the plate cylinder body, an air bag is arranged in the mounting cylinder, and limiting plates are arranged at the four corners of the air bag. According to the plate cylinder assembly of the curved surface printing machine, through the arrangement of the installation cylinder, the air bag, the limiting plate, the air expansion block, the circular block, the metal air pipe and the air injection mechanism, the purpose that plate cylinder bodies with different inner diameters are installed by changing the diameter of the installation cylinder is achieved; the problems that although an existing plate cylinder assembly of the curved surface printing machine can adjust the position of the plate cylinder assembly under the non-stop condition, the plate cylinder assembly does not have the function of installing plate cylinders with different inner diameters, so that a user needs to select a proper assembly when installing the plate cylinders with different inner diameters, and the assembly is inconvenient to use are solved. And the practicability is poor.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing, and particularly relates to a plate-drum assembly of a curved printing machine. Background Art

[0002] Curved surface printing technology is widely used in the manufacturing process of outer packaging of chemical, daily chemical, pharmaceutical, food and other products. In the existing curved surface printing process, the plate cylinder is a carrier for printing patterns and texts. The color group applies different inks on the outer surface of the plate cylinder and then transfers them to the required products.

[0003] The prior art patent document with publication number CN 213035490 U provides a plate-drum assembly of a curved printing press and a curved printing press. The device can adjust the position of the plate-drum assembly without stopping the machine, thereby achieving smooth printing work and reducing the scrap rate of products. The adjustment process is also more time-saving and labor-saving and easy to operate. Although the plate-drum assembly of the current curved printing press can adjust the position of the plate-drum assembly without stopping the machine, it does not have the function of installing plate-drums with different inner diameters, resulting in the user needing to select a suitable assembly when installing plate-drums with different inner diameters, which is less practical. Utility Model Content

[0004] The utility model provides a plate-cylinder assembly for a curved printing machine, aiming to solve the problem that although the plate-cylinder assembly of the current curved printing machine can adjust the position of the plate-cylinder assembly without stopping the machine, it does not have the function of installing plate cylinders with different inner diameters, resulting in the user needing to select a suitable assembly when installing plate cylinders with different inner diameters, which has poor practicality.

[0005] The utility model is implemented as follows: a plate-cylinder assembly of a curved printing press comprises: a plate-cylinder body; a mounting cylinder is arranged inside the plate-cylinder body, an air bag is arranged inside the mounting cylinder, limiting plates are arranged at the four corners of the air bag, an air expansion block is fixedly connected to the side of the limiting plate away from the air bag, circular blocks are arranged at both ends of the air bag, a metal air pipe is fixedly connected to the air bag near the circular block, the metal air pipe and the end away from the air bag penetrate the circular block and the mounting cylinder and extend to the outside of the mounting cylinder; one end of the metal air pipe away from the air bag is provided with an air injection mechanism to prevent air leakage; the four corners of the circular block are provided with a rebound mechanism for limiting the limiting plate.

[0006] Preferably, the air injection mechanism includes: an externally threaded sleeve is provided at one end of the metal air tube away from the airbag, and the externally threaded sleeve is fixedly connected to the mounting tube; an air inlet is opened inside the externally threaded sleeve, a sealing bead is provided inside the air inlet, a first spring is provided on one side of the sealing bead, and the end of the first spring away from the sealing bead is fixedly connected to the externally threaded sleeve.

[0007] Preferably, the rebound mechanism includes: the four corners of the circular block are fixedly connected to the limiting rod, and the end of the limiting rod away from the circular block is fixedly connected to the mounting tube; the mounting tube is provided with a spring limiting groove near the limiting rod, and the inside of the spring limiting groove is provided with a second spring, and the second spring is respectively sleeved on the outer surface of the limiting rod.

[0008] Preferably, an exhaust port is provided at the end of the mounting cylinder away from the external threaded sleeve, a piston is provided inside the exhaust port, an annular block is provided on the outer surface of the piston, the annular block is fixedly connected to the exhaust port, a pressure rod is fixedly connected to one end of the piston, the end of the pressure rod away from the piston passes through the exhaust port and extends to the push plate, the push plate is fixedly connected to the pressure rod, a third spring is provided at the end of the piston away from the pressure rod, a metal filter is fixedly connected to the end of the third spring away from the piston, the metal filter is fixedly connected to the exhaust port, and six through holes are evenly arranged inside the exhaust port.

[0009] Preferably, a sealing gasket is provided between the piston and the annular block, and the sealing gasket is fixedly connected to the annular block.

[0010] Preferably, a damping pad is provided on one side of the air expansion block away from the limiting plate, and the damping pads are fixedly connected to the air expansion block respectively.

[0011] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0012] By arranging the mounting cylinder, the air bag, the limit plate, the air expansion block, the circular block, the metal air pipe and the air injection mechanism, the purpose of installing the plate cylinder body with different inner diameters is achieved by changing the diameter of the mounting cylinder, and the problem that the plate cylinder assembly of the current curved printing machine can adjust the position of the plate cylinder assembly without stopping the machine, but it does not have the function of installing the plate cylinders with different inner diameters, resulting in the user needing to select a suitable assembly when installing the plate cylinders with different inner diameters, which has poor practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 The utility model Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 The utility model Figure 1 Enlarged view of point B in the middle;

[0016] Figure 4 The utility model Figure 1 Enlarged view of point C in the middle;

[0017] Figure 5 It is a schematic diagram of the installation tube structure of the utility model.

[0018] In the figure: 1. plate-cylinder body; 2. mounting cylinder; 3. air bag; 4. limit plate; 5. air expansion block; 6. round block; 7. metal air pipe; 8. air injection mechanism; 9. rebound mechanism; 10. external threaded sleeve; 11. air inlet; 12. sealing bead; 13. first spring; 14. limit rod; 15. second spring; 16. exhaust port; 17. piston; 18. annular block; 19. pressure rod; 20. push plate; 21. third spring; 22. metal filter; 23. through hole; 24. sealing pad; 25. damping pad. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The utility model embodiment provides a plate-drum assembly of a curved printing machine, such as Figure 1-5As shown, it comprises: a plate-tube body 1; a mounting tube 2 is arranged inside the plate-tube body 1, an airbag 3 is arranged inside the mounting tube 2, limiting plates 4 are arranged at the four corners of the airbag 3, and an air expansion block 5 is fixedly connected to the side of the limiting plate 4 away from the airbag 3, circular blocks 6 are arranged at both ends of the airbag 3, and a metal air pipe 7 is fixedly connected to the airbag 3 near the circular block 6, and the metal air pipe 7 and the end away from the airbag 3 pass through the circular block 6 and the mounting tube 2 and extend to the outside of the mounting tube 2; one end of the metal air pipe 7 away from the airbag 3 is provided with an air injection mechanism 8 for preventing air leakage; the four corners of the circular block 6 are provided with a rebound mechanism 9 for limiting the limiting plate 4.

[0022] It should be noted that the user uses an air gun to inject air into the interior of the airbag 3 through the air injection mechanism 8. After the air is injected, the volume of the airbag 3 gradually increases, thereby pushing the limit plate 4. The limit plate 4 drives the air expansion block 5, thereby making the air expansion block 5 extend to the outside of the mounting tube 2, thereby fixing the plate tube body 1 with different inner diameters, thereby achieving the purpose of installing the plate tube body 1 with different inner diameters by changing the diameter of the mounting tube 2. This solves the problem that although the plate tube assembly of the current curved printing machine can adjust the position of the plate tube assembly without stopping the machine, it does not have the function of installing plate tubes with different inner diameters, resulting in the user needing to select a suitable assembly when installing plate tubes with different inner diameters, which is less practical.

[0023] In a further preferred embodiment of the present invention, Figure 2 As shown, the gas injection mechanism 8 includes: an external threaded sleeve 10 is provided at one end of a metal air pipe 7 away from the airbag 3, and the external threaded sleeve 10 is fixedly connected to the mounting tube 2; an air inlet 11 is opened inside the external threaded sleeve 10, a sealing bead 12 is provided inside the air inlet 11, a first spring 13 is provided on one side of the sealing bead 12, and the end of the first spring 13 away from the sealing bead 12 is fixedly connected to the external threaded sleeve 10.

[0024] In this embodiment, the user connects the muzzle of the air gun to the external threaded sleeve 10 and then injects air into the interior of the external threaded sleeve 10. The high air pressure pushes the sealing beads 12 and enters the metal air tube 7 through the gap between the sealing beads 12 and the air inlet 11, and then enters the airbag 3 through the metal air tube 7. After the air injection is completed, the air pressure inside the airbag 3 and the metal air tube 7 is relatively high, which pushes the sealing beads 12 to fit tightly with the inlet 11, thereby achieving the purpose of preventing air leakage.

[0025] In a further preferred embodiment of the present invention, Figure 4As shown, the rebound mechanism 9 includes: the four corners of the circular block 6 are fixedly connected to the limiting rod 14, and the end of the limiting rod 14 away from the circular block 6 is fixedly connected to the mounting tube 2; the mounting tube 2 is provided with a spring limiting groove near the limiting rod 14, and the inside of the spring limiting groove is provided with a second spring 15, and the second spring 15 is respectively sleeved on the outer surface of the limiting rod 14.

[0026] In this embodiment, when the gas inside the airbag 3 is discharged, the second spring 15 pushes the limit plate 4, causing the limit plate 4 to slide on the surface of the limit rod 14. While the limit plate 4 slides, it drives the air expansion block 5, causing the air expansion block 5 to move to the inside of the mounting tube 3, thereby achieving the purpose of controlling the air expansion block 5 to reset.

[0027] In a further preferred embodiment of the present invention, Figure 3 As shown, an exhaust port 16 is provided at one end of the mounting cylinder 2 away from the external threaded sleeve 10, a piston 17 is provided inside the exhaust port 16, an annular block 18 is provided on the outer surface of the piston 17, the annular block 18 is fixedly connected to the exhaust port 16, a pressure rod 19 is fixedly connected to one end of the piston 17, the end of the pressure rod 19 away from the piston 17 passes through the exhaust port 16 and extends to the push plate 20, the push plate 20 is fixedly connected to the pressure rod 19, a third spring 21 is provided at one end of the piston 17 away from the pressure rod 19, a metal filter screen 22 is fixedly connected to the end of the third spring 21 away from the piston 17, the metal filter screen 22 is fixedly connected to the exhaust port 16, and six through holes 23 are evenly opened inside the exhaust port 16.

[0028] In this embodiment, the user pushes the push plate 20, the push plate 20 drives the pressure rod 19, and the pressure rod 19 drives the piston 17, so that the piston 17 is separated from the annular block 18, and the gas inside the airbag 3 enters the exhaust port 16 through the metal air pipe 7, and then passes through the gap between the piston 17 and the annular block 18, and is finally discharged from the through hole 23, thereby achieving the purpose of exhaust.

[0029] In a further preferred embodiment of the present invention, Figure 3 As shown, a sealing gasket 24 is provided between the piston 17 and the annular block 18 , and the sealing gasket 24 is fixedly connected to the annular block 18 .

[0030] In this embodiment, the sealing effect when the piston 17 and the annular block 18 are in contact with each other is improved, and air leakage is avoided.

[0031] In a further preferred embodiment of the present invention, Figure 1 , 4 As shown in Figures 5 and 5 , a damping pad 25 is provided on one side of the air expansion block 5 away from the limiting plate 4 , and the damping pads 25 are fixedly connected to the air expansion block 5 .

[0032] In this embodiment, the roughness of the surface of the gas expansion block 5 is improved, thereby increasing the friction between the gas expansion block 5 and the inner diameter of the plate cylinder body 1, so that the plate cylinder body 1 is stably installed and not easy to loosen.

[0033] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0034] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0035] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A plate-drum assembly of a curved printing press, comprising: Plate tube body (1); The invention is characterized in that a mounting tube (2) is arranged inside the plate tube body (1), an air bag (3) is arranged inside the mounting tube (2), limiting plates (4) are arranged at the four corners of the air bag (3), a side of the limiting plate (4) away from the air bag (3) is fixedly connected with an air expansion block (5), circular blocks (6) are arranged at both ends of the air bag (3), a metal air pipe (7) is fixedly connected to the air bag (3) near the circular block (6), and the metal air pipe (7) and the end away from the air bag (3) penetrate the circular block (6) and the mounting tube (2) and extend to the outside of the mounting tube (2); An air injection mechanism (8) for preventing air leakage is provided at one end of the metal air pipe (7) away from the air bag (3); The four corners of the circular block (6) are each provided with a rebound mechanism (9) for limiting the position of the limiting plate (4).

2. A plate-drum assembly for a curved printing press as claimed in claim 1, characterized in that: The gas injection mechanism (8) comprises: An external threaded sleeve (10) is provided at one end of the metal air pipe (7) away from the air bag (3), and the external threaded sleeve (10) is fixedly connected to the mounting tube (2); An air inlet (11) is provided inside the external threaded sleeve (10), a sealing bead (12) is provided inside the air inlet (11), a first spring (13) is provided on one side of the sealing bead (12), and one end of the first spring (13) away from the sealing bead (12) is fixedly connected to the external threaded sleeve (10).

3. The plate-drum assembly of a curved printing press according to claim 1, characterized in that: The rebound mechanism (9) comprises: The four corners of the circular block (6) are fixedly connected to limit rods (14), and the ends of the limit rods (14) away from the circular block (6) are fixedly connected to the mounting tube (2); The installation tube (2) is provided with a spring limiting groove near the limiting rod (14), and a second spring (15) is arranged inside the spring limiting groove. The second spring (15) is respectively sleeved on the outer surface of the limiting rod (14).

4. A plate-drum assembly for a curved printing press as claimed in claim 2, characterized in that: An exhaust port (16) is provided at one end of the mounting cylinder (2) away from the external threaded sleeve (10), a piston (17) is provided inside the exhaust port (16), an annular block (18) is provided on the outer surface of the piston (17), the annular block (18) is fixedly connected to the exhaust port (16), one end of the piston (17) is fixedly connected to a pressure rod (19), the end of the pressure rod (19) away from the piston (17) passes through the exhaust port (16) and extends to a push plate (20), the push plate (20) is fixedly connected to the pressure rod (19), the end of the piston (17) away from the pressure rod (19) is provided with a third spring (21), the end of the third spring (21) away from the piston (17) is fixedly connected to a metal filter (22), the metal filter (22) is fixedly connected to the exhaust port (16), and six through holes (23) are evenly opened inside the exhaust port (16).

5. A plate-drum assembly for a curved printing press as claimed in claim 4, characterized in that: A sealing gasket (24) is provided between the piston (17) and the annular block (18), and the sealing gasket (24) is fixedly connected to the annular block (18).

6. The plate-drum assembly of a curved printing press according to claim 1, characterized in that: A damping pad (25) is provided on one side of the air expansion block (5) away from the limiting plate (4), and the damping pads (25) are respectively fixedly connected to the air expansion block (5).

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