Printing roller

Abstract

The utility model belongs to the technical field of printing rollers, and particularly relates to a printing roller which comprises a printing roller body, two symmetrically-distributed outer replacement protection assemblies are arranged on the outer side of the printing roller body, each outer replacement protection assembly comprises a replacement shell, two side plates and two fixing screw rods, and the side plates and the fixing screw rods are symmetrically arranged on the outer side of the printing roller body. According to the printing roller, the two replacement shells are spliced with each other to replace the printing roller body to adhere a flexible printing plate, after the flexible printing plate is taken down from the surfaces of the replacement shells, the replacement shells are spliced with the printing roller body, and the flexible printing plate is fixed to the printing roller body through the fixing screws. The splicing block drives the arc-shaped scraper to extrude from the inner side of the sealing pad by rotating the adjusting screw rod, the splicing block is continuously pushed to enable the arc-shaped scraper to move along the surface of the replacement shell, and residual adhesive and residual ink can be effectively scraped off when the flexible printing plate on the surface of the replacement shell is taken down through the arc-shaped scraper. And an operator can conveniently and directly take down the replacement shell from the printing roller body to carry out surface cleaning operation.

Description

Technical Field

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

[0002] The printing roller is one of the main components in printing machinery. During the printing process, the flexographic printing plate is adhered to the surface of the printing roller from the outside, and ink is drawn out from inside the ink trough to print the pattern onto the substrate. The printing roller consists of a central roller body and side roller shafts connected as a whole. The flexographic printing plate is directly adhered to the surface of the central roller body. When the flexographic printing plate needs to be replaced during the printing process, the entire printing roller, along with the flexographic printing plate, needs to be removed for disassembly and re-adhesion. Before replacement, the operator needs to use external tools to scrape off any residual adhesive and ink from the surface of the central roller body from the outside. This increases the operator's steps and the difficulty of operation, making it difficult for the operator to flexibly and conveniently replace the flexographic printing plate on the surface of the printing roller, thus affecting the performance of the printing roller. Utility Model Content

[0003] This invention provides a printing roller that improves the performance of the printing roller.

[0004] This utility model provides the following technical solution: It includes a printing roller body, with two symmetrically distributed external replacement protection components on the outer side of the printing roller body. Each external replacement protection component includes a replacement shell, side plates, and fixing screws. There are two side plates and two fixing screws. The two fixing screws respectively screw the two side plates to both ends of the printing roller body. The replacement shell is clamped and positioned on the outer side of the printing roller body by the two side plates. Each of the four side plates has a shielding component on its outer side. The shielding component includes a baffle, a sealing pad, and a connecting plate. The baffle and the sealing pad are both fixed to the outer side of the corresponding side plate by the connecting plate, and shield the corresponding ends of the side plate and the replacement shell from the outside. Each of the four shielding components has a cleaning component on its inner side. The cleaning component includes a splicing block and an arc-shaped scraper. The splicing block is engaged between the baffle and the side plate, and the arc-shaped scraper is slidably connected to the outer side of the replacement shell through the splicing block.

[0005] The two side plates are respectively fixedly connected to both ends of the replacement shell, and the fixing screws are screwed into the corresponding side plates.

[0006] The connecting plate is fixedly connected to the outer wall of the corresponding side plate, and the baffle is fixedly connected to the top of the connecting plate.

[0007] The sealing pad is fixedly connected to the inner end of the baffle, and the bottom end of the sealing pad is close to the outer wall of the replacement shell.

[0008] The arc-shaped scraper is fixedly connected to the inner end of the splicing block, and the arc-shaped scraper is located inside the sealing pad.

[0009] The outer end of the splicing block is rotatably connected to an adjusting screw, which is screwed into the corresponding connecting plate.

[0010] The length of the adjusting screw is greater than the thickness of the connecting plate.

[0011] The beneficial effects of this utility model are:

[0012] This invention uses two interchangeable shells, spliced ​​and screwed together and fixed to the outside of the printing roller body, to shield the printing roller body and replace it for attaching the flexible printing plate. This avoids prolonged adhesion of the flexible printing plate to the printing roller body. The shielding component fixed to the outside of the side plate shields and positions the cleaning component at the end of the interchangeable shell. After the flexible printing plate is removed from the surface of the interchangeable shell, rotating the adjusting screw allows the splicing block, carrying an arc-shaped scraper, to be extruded from the inside of the sealing pad. Continuously pushing the splicing block causes the arc-shaped scraper to move along the surface of the interchangeable shell. The arc-shaped scraper effectively removes residual adhesive and ink from the surface of the interchangeable shell when the flexible printing plate is removed. After removing the fixing screw, the interchangeable shell, along with the corresponding shielding component and cleaning component, can be separated from the printing roller body. This facilitates the installation and removal of the interchangeable shell from the printing roller body, allowing operators to perform surface cleaning operations either directly on the printing roller body or by removing the interchangeable shell directly. This simplifies the operator's workflow, enabling flexible and convenient replacement of the flexible printing plate and improving the performance of the printing roller body.

[0013] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 This is a frontal cross-sectional view of the present invention.

[0017] Figure 4 for Figure 3 A magnified structural diagram of part A in the middle.

[0018] In the diagram: 1. Printing roller body; 2. External replacement protective assembly; 21. Replacement shell; 22. Side plate; 23. Fixing screw; 3. Shielding assembly; 31. Baffle; 32. Sealing gasket; 33. Connecting plate; 4. Cleaning assembly; 41. Splicing block; 42. Arc-shaped scraper; 43. Adjusting screw. Detailed Implementation

[0019] Please see Figures 1-4 This utility model provides the following technical solution: It includes a printing roller body 1, with two symmetrically distributed external replacement protection components 2 on the outer side of the printing roller body 1. Each external replacement protection component 2 includes a replacement shell 21, side plates 22, and fixing screws 23. There are two side plates 22 and two fixing screws 23. The two fixing screws 23 respectively screw and fix the two side plates 22 to both ends of the printing roller body 1. The replacement shell 21 is clamped and positioned on the outer side of the printing roller body 1 by the two side plates 22. Each of the four side plates 22 has a... The shielding assembly 3 includes a shield 31, a sealing pad 32, and a connecting plate 33. The shield 31 and the sealing pad 32 are both fixed to the outside of the corresponding side plate 22 through the connecting plate 33, and shield the corresponding ends of the side plate 22 and the replacement shell 21 from the outside. The inner side of each of the four shielding assemblies 3 is provided with a cleaning assembly 4. The cleaning assembly 4 includes a splicing block 41 and an arc-shaped scraper 42. The splicing block 41 is snapped between the shield 31 and the side plate 22, and the arc-shaped scraper 42 is slidably connected to the outside of the replacement shell 21 through the splicing block 41.

[0020] In this embodiment: Two symmetrically distributed external alternative protection components 2 are provided on the outer side of the printing roller body 1. The external alternative protection component 2 consists of a replacement shell 21, a side plate 22, and a fixing screw 23. There are two side plates 22 and two fixing screws 23. The two side plates 22 are respectively fixedly connected to the two ends of the replacement shell 21. The fixing screws 23 are screwed and fixed inside the corresponding side plates 22. The two fixing screws 23 are respectively screwed and fixed to the two ends of the printing roller body 1, stably fixing the external alternative protection component 2 as a whole to the outer side of the printing roller body 1, so that the replacement shell 21 is clamped to the surface of the printing roller body 1 from the outside. The open ends of the two replacement shells 21 are closely spliced ​​together, so that the two replacement shells 21 can completely cover the surface of the printing roller body 1 from the outside, thus playing the role of protecting the printing roller body 1 from the outside.

[0021] A shielding assembly 3 is provided on the outer side of each of the four side plates 22. The shielding assembly 3 consists of a shield 31, a sealing pad 32, and a connecting plate 33. The connecting plate 33 is fixedly connected to the outer wall of the corresponding side plate 22, the shield 31 is fixedly connected to the top of the connecting plate 33, and the sealing pad 32 is fixedly connected to the inner end of the shield 31. The shield 31, the sealing pad 32, and the connecting plate 33 are stably connected, and the shielding assembly 3 is fixed as a whole to the outer side of the replacement shell 21. This ensures that the shield 31 and the sealing pad 32 are stably positioned on the outer side of the corresponding side plate 22 through the connecting plate 33. The bottom end of the sealing pad 32 is close to the outer wall of the replacement shell 21. The shield 31 and the sealing pad 32 work together to shield and protect the corresponding ends of the side plate 22 and the replacement shell 21 from the outside.

[0022] Each of the four shielding components 3 has a cleaning component 4 installed on its inner side. The cleaning component 4 consists of a splicing block 41 and an arc-shaped scraper 42. The arc-shaped scraper 42 is fixedly connected to the inner end of the splicing block 41, stably assembling the splicing block 41 and the arc-shaped scraper 42. The splicing block 41 is located in the space between the baffle 31 and the side plate 22. The inner and outer walls of the splicing block 41 are respectively attached to the inner wall of the baffle 31 and the outer wall of the side plate 22 to stably position the splicing block 41 between the baffle 31 and the side plate 22. An adjusting screw 43 is rotatably connected to the outer end of the splicing block 41. The adjusting screw 43 is screwed into the corresponding connecting plate 33. By rotating the adjusting screw 43, the splicing block 41 can be positioned in the space between the baffle 31 and the side plate 22, attached to the outer wall of the side plate 22. The splicing block 41 can move along the surface of the replacement shell 21 with the arc-shaped scraper 42. The arc-shaped scraper 42 is located inside the sealing pad 32. The arc-shaped scraper 42 can squeeze the sealing pad 32 from the inside and gradually move from the inside to the outside of the sealing pad 32. The operator can make the arc-shaped scraper 42 continue to move along the surface of the replacement shell 21 by directly pushing the splicing block 41, which makes it easy to adjust the position of the splicing block 41 and the arc-shaped scraper 42 on the surface of the replacement shell 21. The movement of the arc-shaped scraper 42 on the surface of the replacement shell 21 can perform scraping operations on the surface of the replacement shell 21. The length of the adjusting screw 43 is greater than the thickness of the connecting plate 33, so that the extension part of the adjusting screw 43 extends to the outside of the connecting plate 33, which makes it easy for the operator to perform rotation operations.

[0023] Two combined external replacement protection components 2 are connected to the outside of the printing roller body 1. The replacement shell 21 is clamped to the outside of the printing roller body 1 and fixed by screwing on the fixing screw 23. The two replacement shells 21 are spliced ​​together and completely cover the printing roller body 1 from the outside, which can protect the printing roller body 1 from the outside and replace the printing roller body 1 to stick the flexible printing plate, avoiding the printing roller body 1 from sticking the flexible printing plate for a long time. The blocking component 3 fixed to the outside of the side plate 22 blocks from the outside and positions the cleaning component 4 at the end of the replacement shell 21. After the flexible printing plate is removed from the surface of the replacement shell 21, the splicing block 41 with the arc-shaped scraper 42 can be moved from the sealing pad 32 by rotating the adjusting screw 43. The inner side is extruded and continuously pushed by the splicing block 41, causing the arc-shaped scraper 42 to move along the surface of the replacement shell 21. The arc-shaped scraper 42 can effectively scrape off the residual adhesive and ink residue on the surface of the replacement shell 21 when the flexible printing plate is removed. After the fixing screw 23 is removed, the replacement shell 21 can be separated from the printing roller body 1 together with the corresponding shielding component 3 and cleaning component 4. This facilitates the installation and removal of the replacement shell 21 from the printing roller body 1, and makes it easier for operators to perform surface cleaning operations on the printing roller body 1 or directly remove the replacement shell 21. This simplifies the operator's work process and allows the operator to flexibly and conveniently change the flexible printing plate, improving the performance of the printing roller body 1.

Claims

1. A printing roller comprising a printing roller body (1), characterized in that: The printing roller body (1) is provided with two symmetrically distributed external replacement protection components (2). Each external replacement protection component (2) includes a replacement shell (21), a side plate (22), and a fixing screw (23). There are two side plates (22) and two fixing screws (23). The two fixing screws (23) are respectively screwed to fix the two side plates (22) at both ends of the printing roller body (1). The replacement shell (21) is clamped and positioned on the outside of the printing roller body (1) by the two side plates (22). Each of the four side plates (22) is provided with a shielding component (3). The shielding component (3) includes a baffle (3). 1) Sealing pad (32) and connecting plate (33): The baffle (31) and the sealing pad (32) are both fixed to the outside of the corresponding side plate (22) through the connecting plate (33) and cover the corresponding ends of the side plate (22) and the replacement shell (21) from the outside. The inner side of each of the four covering components (3) is provided with a cleaning component (4). The cleaning component (4) includes a splicing block (41) and an arc-shaped scraper (42). The splicing block (41) is engaged between the baffle (31) and the side plate (22). The arc-shaped scraper (42) is slidably connected to the outside of the replacement shell (21) through the splicing block (41).

2. A printing roller according to claim 1, characterized in that: The two side plates (22) are respectively fixedly connected to the two ends of the replacement shell (21), and the fixing screws (23) are screwed and fixed inside the corresponding side plates (22).

3. A printing roller as claimed in claim 1, characterized in that: The connecting plate (33) is fixedly connected to the outer wall of the corresponding side plate (22), and the baffle (31) is fixedly connected to the top of the connecting plate (33).

4. The printing roller of claim 1, wherein: The sealing pad (32) is fixedly connected to the inner end of the baffle (31), and the bottom end of the sealing pad (32) is close to the outer wall of the replacement shell (21).

5. The printing roller of claim 1, wherein: The arc-shaped scraper (42) is fixedly connected to the inner end of the splicing block (41), and the arc-shaped scraper (42) is located inside the sealing pad (32).

6. A printing roller as claimed in claim 1, characterized in that: An adjusting screw (43) is rotatably connected to the outer end of the splicing block (41), and the adjusting screw (43) is screwed into the corresponding connecting plate (33).

7. A printing roller according to claim 6, wherein: The length of the adjusting screw (43) is greater than the thickness of the connecting plate (33).

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