Printing cylinder

Abstract

The utility model belongs to the technical field of printing, and particularly relates to a printing cylinder which comprises a metal mandrel, a transfer printing assembly is sleeved outside the metal mandrel, a rubber adhesive is filled between the metal mandrel and the transfer printing assembly, and the metal mandrel and the transfer printing assembly are bonded and fixed through the rubber adhesive. The transfer printing assembly comprises an inner supporting rubber sleeve, an outer rotating rubber sleeve and a plurality of elastic assemblies, the elastic assemblies are fixedly connected between the inner supporting rubber sleeve and the outer rotating rubber sleeve, and the inner supporting rubber sleeve is bonded to the outer side of the metal mandrel; according to the outer rotating rubber sleeve, the outer rotating rubber sleeve can be tightly attached to a printing plate and a printing stock in the imprinting process, printing ink is transferred more sufficiently, the quality of printed matter can be improved, and the adverse effect on printing work due to elasticity caused by material aging of the outer portion of the outer rotating rubber sleeve after long-time use can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of printing technology, and specifically relates to a printing roller. Background Technology

[0002] Rubber rollers are a type of printing roller used in offset printing to transfer ink received on the printing plate cylinder onto paper or other substrates. During the transfer process, the rubber roller, with the elasticity of its outer rubber, can adhere tightly to the substrate, thus completing the ink transfer. However, after prolonged use, the outer rubber layer of the rubber roller may age or crack, leading to a decline in print quality. Utility Model Content

[0003] This utility model provides a printing cylinder that allows the outer rotating rubber sleeve to fit tightly against the printing plate and substrate during the printing process, resulting in more complete ink transfer and improved print quality. It also helps to reduce the adverse effects on printing work caused by the aging of the outer rotating rubber sleeve due to material aging after long-term use.

[0004] This utility model provides the following technical solution: a printing roller, including a metal mandrel, a transfer assembly sleeved on the outside of the metal mandrel, and a rubber adhesive filling the space between the metal mandrel and the transfer assembly, and the metal mandrel and the transfer assembly are bonded and fixed by the rubber adhesive. The transfer assembly includes an inner supporting rubber sleeve, an outer rotating rubber sleeve, and several elastic components, and several elastic components are fixedly connected between the inner supporting rubber sleeve and the outer rotating rubber sleeve. The inner supporting rubber sleeve is bonded to the outside of the metal mandrel. The elastic component includes a supporting arc plate, a return spring post, and a connecting arc plate, and the connecting arc plate is fixedly connected between the supporting arc plate and the return spring post. An outer liner is sleeved on the outside of the elastic component. Connecting seats are fixedly connected to both sides of the metal mandrel, and several supporting plates are slidably connected inside the connecting seats, and one side of the supporting plate and one side of the connecting seat are located on the same plane.

[0005] A connecting rubber post is provided between two adjacent elastic components, and the connecting rubber post is fixedly connected between the outer rotating rubber sleeve and the inner supporting rubber sleeve.

[0006] The connecting seat has an internal mounting groove, and the support plate is located inside the mounting groove.

[0007] The support plate has a limit arc plate fixedly connected to both sides.

[0008] The bottom of the support plate is fixedly connected to an adsorption magnetic plate.

[0009] An electromagnetic plate is fixedly connected inside the mounting groove, and the electromagnetic plate and the adsorption magnetic plate are attracted to each other.

[0010] The connecting base has a reversing control panel fixedly connected to one side, and the reversing control panel is connected to several electromagnetic plates via connecting lines.

[0011] The beneficial effects of this utility model are as follows: Under the action of the elastic component, the outer rubber sleeve can be closely fitted with the printing plate and the substrate during the printing process, so that the ink transfer is more complete and helps to improve the quality of the printed matter. In addition, the elastic component can help improve the overall elasticity of the transfer component, which can help reduce the adverse effects on the printing work caused by the aging of the outer rubber sleeve due to material aging after long-term use. Furthermore, with the cooperation of the support plate, the limiting arc plate, the adsorption magnetic plate and the electromagnetic plate, the inner wall of the outer liner can be supported when the outer liner is replaced, and the outer liner is assembled outside the transfer component.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a side sectional view of the present invention.

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0015] Figure 3 This is a side view sectional structural diagram of the metal mandrel, connecting seat, mounting groove, and support plate in this utility model.

[0016] In the diagram: 1. Metal mandrel; 2. Rubber adhesive; 3. Transfer assembly; 31. Inner support rubber sleeve; 32. Outer transfer rubber sleeve; 33. Elastic assembly; 331. Support arc plate; 332. Return spring post; 333. Connecting arc plate; 34. Connecting rubber post; 4. Outer liner; 5. Connecting seat; 51. Mounting groove; 52. Support plate; 521. Limiting arc plate; 522. Adsorption magnetic plate; 53. Electromagnetic plate; 54. Reversing control panel. Detailed Implementation

[0017] Please see Figures 1-3This utility model provides the following technical solution: a printing roller, including a metal mandrel 1, a transfer assembly 3 sleeved on the outside of the metal mandrel 1, and a rubber adhesive 2 filling the space between the metal mandrel 1 and the transfer assembly 3, and the metal mandrel 1 and the transfer assembly 3 are bonded and fixed by the rubber adhesive 2. The transfer assembly 3 includes an inner supporting rubber sleeve 31, an outer rotating rubber sleeve 32 and a plurality of elastic components 33, and the plurality of elastic components 33 are fixedly connected between the inner supporting rubber sleeve 31 and the outer rotating rubber sleeve 32. The supporting rubber sleeve 31 is bonded to the outer side of the metal mandrel 1. The elastic component 33 includes a supporting arc plate 331, a return spring post 332 and a connecting arc plate 333. The connecting arc plate 333 is fixedly connected between the supporting arc plate 331 and the return spring post 332. The outer side of the elastic component 33 is fitted with an outer liner 4. Both sides of the metal mandrel 1 are fixedly connected with connecting seats 5. Several supporting plates 52 are slidably connected inside the connecting seats 5. One side of the supporting plate 52 and one side of the connecting seat 5 are located on the same plane.

[0018] In this embodiment: the metal mandrel 1 serves as a support component in the entire printing cylinder and also provides a mounting carrier for the transfer assembly 3. The transfer assembly 3 is the transfer component in the entire printing cylinder. The inner support rubber sleeve 31 in the transfer assembly 3 provides a connection carrier between the metal mandrel 1 and the transfer assembly 3, while the outer transfer rubber sleeve 32 is used to transfer the ink during printing. The elastic component 33 located between the inner support rubber sleeve 31 and the outer transfer rubber sleeve 32 enhances the elasticity of the entire transfer assembly 3 during use and maintains the elasticity of the entire transfer assembly 3 in good condition when the outer transfer rubber sleeve 32 ages and loses elasticity after long-term use. During printing, the outer transfer rubber sleeve 32 in the transfer assembly 3 receives the image ink on the printing cylinder and then transfers the ink onto paper or other substrates. In this process, the elastic component 33 in the transfer assembly 3 ensures that the entire transfer assembly 3 maintains good elasticity during operation. This allows the outer rubber sleeve 32 to fit tightly against the printing plate and substrate during the printing process, resulting in more complete ink transfer and improving the quality of the printed matter. Furthermore, the elastic component 33 assists in enhancing the overall elasticity of the transfer assembly 3, helping to reduce the adverse effects on printing work caused by the aging of the outer rubber sleeve 32 due to material aging after prolonged use. The return spring post 332 in the elastic component 33 provides connection for several connecting arc plates 333. The carrier, the supporting arc plate 331, is used to provide a more uniform elastic force to one side of the outer rubber sleeve 32. The outer liner 4 located outside the transfer assembly 3 is used to improve the softness of the surface of the transfer assembly 3. At the same time, the outer liner 4 can improve the ink adsorption. In addition, it can also protect the rubber layer, reduce the direct wear of the rubber layer, and extend the service life of the rubber roller. The connecting seats 5 located at both ends of the metal mandrel 1 are used to provide a carrier for connecting the support plate 52. The support plate 52 is used to provide support for one end of the outer liner 4 when it is disassembled and assembled, so as to facilitate the assembly of the outer liner 4 outside the transfer assembly 3.

[0019] A connecting rubber post 34 is provided between two adjacent elastic components 33, and the connecting rubber post 34 is fixedly connected between the outer rotating rubber sleeve 32 and the inner supporting rubber sleeve 31; wherein the connecting rubber post 34 plays a supporting role.

[0020] The connector 5 has an internal mounting groove 51, and the support plate 52 is located inside the mounting groove 51; wherein the mounting groove 51 is used to provide space for the connector 5 to be installed.

[0021] Limiting arc plates 521 are fixedly connected to both sides of the support plate 52, and an adsorption magnetic plate 522 is fixedly connected to the bottom of the support plate 52. An electromagnetic plate 53 is fixedly connected inside the mounting groove 51, and the electromagnetic plate 53 and the adsorption magnetic plate 522 attract each other. The limiting arc plates 521 are used to limit the movement position of the support plate 52 when it moves upward. The electromagnetic plate 53, in cooperation with the adsorption magnetic plate 522, forms a limiting component to limit the support plate 52 inside the mounting groove 51. When it is necessary to limit the support plate 52 to the inner wall of the mounting groove 51, the magnetic pole of the electromagnetic plate 53 is adjusted to be aligned with the limiting arc plate 52. When the magnetic poles of plate 521 are opposite and it is necessary to slide one side of support plate 52 outward, the magnetic poles of electromagnetic plate 53 are adjusted to be the same as the magnetic poles of limiting arc plate 521. Then, the support plate 52 can be slid outward of mounting groove 51 by the repulsion of like poles through limiting arc plate 521. When support plate 52 slides outward of mounting groove 51, it can support the inner cavity of outer liner 4, avoiding the outer liner 4 being in contact with the outside of transfer assembly 3 when it is installed on the outside of transfer assembly 3, thus facilitating the installation of outer liner 4 on the outside of transfer assembly 3.

[0022] A reversing control panel 54 is fixedly connected to one side of the connector 5, and the reversing control panel 54 is connected to several electromagnetic plates 53 via connecting lines; wherein the reversing control panel 54 is used to adjust the state of the electromagnetic plates 53 during use.

[0023] The working principle and usage process of this utility model are as follows: During printing, the outer rubber sleeve 32 of the transfer assembly 3 receives the ink on the printing cylinder and then transfers the ink onto paper or other substrates. In this process, the elastic component 33 in the transfer assembly 3 ensures that the entire transfer assembly 3 maintains good elasticity during operation. Simultaneously, the outer liner 4 of the transfer assembly 3 enhances the ink absorption of the transfer assembly 3 during the transfer process and provides external protection, reducing wear on the surface of the transfer assembly 3.

Claims

1. A printing cylinder comprising a metal mandrel (1), characterized in that: A transfer assembly (3) is sleeved on the outside of the metal mandrel (1), and a rubber adhesive (2) is filled between the metal mandrel (1) and the transfer assembly (3). The metal mandrel (1) and the transfer assembly (3) are bonded and fixed together by the rubber adhesive (2). The transfer assembly (3) includes an inner support rubber sleeve (31), an outer transfer rubber sleeve (32), and several elastic components (33). Several elastic components (33) are fixedly connected between the inner support rubber sleeve (31) and the outer transfer rubber sleeve (32). The inner support rubber sleeve (31) and the metal mandrel... (1) is bonded to the outside. The elastic component (33) includes a supporting arc plate (331), a reset spring post (332) and a connecting arc plate (333). The connecting arc plate (333) is fixedly connected between the supporting arc plate (331) and the reset spring post (332). The outer side of the elastic component (33) is fitted with an outer liner (4). Both sides of the metal spindle (1) are fixedly connected with connecting seats (5). Several supporting plates (52) are slidably connected inside the connecting seats (5). One side of the supporting plate (52) and one side of the connecting seat (5) are located on the same plane.

2. A printing cylinder according to claim 1, characterized in that: A connecting rubber post (34) is provided between two adjacent elastic components (33), and the connecting rubber post (34) is fixedly connected between the outer rotating rubber sleeve (32) and the inner supporting rubber sleeve (31).

3. A printing cylinder according to claim 1, characterized in that: The connecting seat (5) has an installation groove (51) inside, and the support plate (52) is located inside the installation groove (51).

4. A printing cylinder according to claim 1, characterized in that: Limiting arc plates (521) are fixedly connected to both sides of the support plate (52).

5. A printing cylinder as claimed in claim 3, characterized in that: An adsorption magnetic plate (522) is fixedly connected to the bottom of the support plate (52).

6. A printing cylinder according to claim 5, characterized in that: An electromagnetic plate (53) is fixedly connected inside the mounting groove (51), and the electromagnetic plate (53) and the adsorption magnetic plate (522) are mutually attracted.

7. A printing cylinder according to claim 6, characterized in that: A reversing control panel (54) is fixedly connected to one side of the connecting base (5), and the reversing control panel (54) is connected to several electromagnetic plates (53) via connecting lines.

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