Adjustable long-service-life ink transfer roller

Abstract

The utility model relates to an adjustable long-life ink transfer roller, which comprises an ink transfer roller main body, a swing shaft, a separable swing arm and a spring, the separable swing arm comprises an upper swing arm and a lower swing arm, the lower end of the upper swing arm is designed and provided with a rectangular flange, and the rest two sides of the rectangular flange are respectively provided with a first threaded hole; ejection adjusting screws are arranged in the first threaded holes in a rotating mode, two second threaded holes are formed in the upper end of the lower swing arm, and the two sides of the rectangular flange of the upper swing arm are connected in the mode that fixing bolts penetrate through the fixing holes to be screwed into the second threaded holes of the lower swing arm. The lower end of the ejection adjusting screw rotates in the first threaded hole to abut against the upper end face of the upper swing arm. The ink transfer roller has the advantages that the distance between the upper swing arm and the lower swing arm is adjusted by designing the upper swing arm and the lower swing arm which are separable and are in threaded connection, the distance between the ink transfer roller body and the ink fountain roller and the distance between the ink transfer roller body and the ink channeling roller are adjusted to be the optimal distance, the service life of the ink transfer roller is prolonged, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of printing presses, specifically to an adjustable long-life ink transfer roller. Background Technology

[0002] Currently, the ink transfer roller in a printing press is a consumable part. The ink transfer roller needs to swing back and forth between the ink fountain roller and the ink transfer roller. Initially, the ink transfer roller contacts and engages with the ink fountain roller under the action of a spring. The ink fountain roller rotates and carries the ink out of the ink fountain. After the ink fountain roller and the ink transfer roller rotate and press for a period of time, the spring force is overcome, causing the ink transfer roller to swing and separate from the ink fountain roller. Then, it rotates and contacts the ink transfer roller. The ink transfer roller transfers some of the ink from the ink fountain roller. Then, the ink transfer roller rotates and presses with one side of the ink transfer roller, and the ink transfer roller transfers some of the ink from the ink transfer roller. The other side of the ink transfer roller evenly coats the surface of the printing plate cylinder with ink, completing the ink transfer process. The ink transfer roller in the printing press is a rubber roller, the ink fountain roller is made of rigid steel, and the ink transfer roller is made of rigid nylon. During use, the ink transfer roller swings back and forth and rubs against each other, making it prone to wear. Once the wear reaches 3-5mm, the swing amplitude is too large, resulting in loud impact noise and severe vibration. It needs to be replaced approximately every six months, leading to high costs. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model proposes an adjustable, long-life ink transfer roller with an ingenious design, a reasonable and compact structure, which extends service life and reduces costs.

[0004] The technical solution of this utility model:

[0005] An adjustable, long-life ink transfer roller includes an ink transfer roller body, a swing shaft, separable swing arms, and springs. The separable swing arms include an upper swing arm and a lower swing arm. The two ends of the swing shaft are rotatably mounted on the side plates of a printing press. A separable swing arm is mounted on each side of the swing shaft near the side plate. The lower swing arm is fixedly mounted to the swing shaft in the middle. The lower end of the upper swing arm is adjustablely fixedly connected to the upper end of the lower swing arm. The two ends of the ink transfer roller body are rotatably mounted on the middle of the upper swing arm. The lower side of the upper end of the upper swing arm is connected to the corresponding side plate via a spring. The spring is located on the lower side of the ink transfer roller body; a rectangular flange is designed to be installed at the lower end of the upper swing arm, with two fixing holes on each of the corresponding two sides of the rectangular flange, and a first threaded hole on each of the remaining two sides of the rectangular flange. An adjusting screw is rotated in the first threaded hole. Two second threaded holes are opened at the upper end of the lower swing arm. The two sides of the rectangular flange of the upper swing arm are connected by fixing bolts passing through the fixing holes and screwed into the second threaded holes of the lower swing arm; the lower end of the adjusting screw is rotated in the first threaded hole and rests on the upper end face of the upper swing arm.

[0006] The ejector adjusting screw is also screwed with a locking nut, which presses against the rectangular flange.

[0007] The advantages of this utility model are its ingenious design and reasonable and compact structure. The separable swing arm structure is designed with separable upper and lower swing arms. The upper and lower swing arms are adjusted by two ejector adjusting screws through threaded connection. The distance between the upper and lower swing arms is adjusted to the optimal distance between the ink transfer roller body and the ink fountain roller and ink duct roller, thereby extending the service life of the ink transfer roller and reducing costs. Attached Figure Description

[0008] Figure 1 This is a simplified schematic diagram illustrating the application of this utility model.

[0009] Figure 2 yes Figure 1 Vertical sectional view.

[0010] Figure 3 yes Figure 2 A vertical cross-sectional view of the end position of the main body of the central ink roller.

[0011] Figure 4 yes Figure 3 A three-dimensional schematic diagram. Detailed Implementation

[0012] See attached document Figure 1-4 An adjustable, long-life ink transfer roller includes an ink transfer roller body 1, a swing shaft 2, separable swing arms, and a spring 4. The separable swing arms include an upper swing arm 5 and a lower swing arm 6. The two ends of the swing shaft 2 are rotatably mounted on the two side plates 3 of a printing press. A separable swing arm is mounted on each side of the swing shaft 2 near the side plate 3. The lower swing arm 6 is fixedly mounted on the swing shaft 2 in the middle. The lower end of the upper swing arm 5 is adjustablely fixedly connected to the upper end of the lower swing arm 6. The two ends of the ink transfer roller body 1 are rotatably mounted on the middle of the upper swing arm 5. The lower side of the upper end of the upper swing arm 5 is connected to the corresponding side plate 3 via a spring 4. 4 is located on the lower side of the ink transfer roller body 1; a rectangular flange 51 is designed to be installed at the lower end of the upper swing arm 5. Two fixing holes are opened on each of the corresponding two sides of the rectangular flange 51, and a first threaded hole is opened on each of the remaining two sides of the rectangular flange 51. An ejector adjusting screw 52 is rotated in the first threaded hole. Two second threaded holes are opened at the upper end of the lower swing arm 6. The two sides of the rectangular flange 51 of the upper swing arm 5 are connected by fixing bolts 61 passing through the fixing holes and screwed into the second threaded holes of the lower swing arm 6; the lower end of the ejector adjusting screw 52 is rotated in the first threaded hole and presses against the upper end face of the upper swing arm 5.

[0013] The ejector adjusting screw 52 is also screwed with a locking nut 53, which presses against the rectangular flange 51. The locking nut is designed to ensure that the ejector adjusting screw is locked in place after adjustment, preventing the ejector adjusting screw from loosening and ensuring safety and reliability.

[0014] In use, the ink transfer roller body is fixedly installed using the upper and lower detachable swing arms. During initial installation, the outer diameter of the ink transfer roller body is maximized, and the center of the ink transfer roller body forms a triangular arrangement with the centers of the ink fountain roller 7 and the ink transfer roller 8. The distance between the upper and lower swing arms is limited by adjusting the height using the adjusting screws. After adjustment, the upper and lower swing arms are securely fixed with bolts. When the outer diameter of the ink transfer roller body wears down to a certain extent, the distance between the ink transfer roller body and the ink fountain roller 7 and the ink transfer roller 8 increases. When the ink transfer roller body is working, its stroke increases as it swings between the ink fountain roller 7 and the ink transfer roller 8, resulting in greater noise and vibration. At this point, the upper and lower swing arms can be retracted and adjusted. To adjust the distance between the lower swing arms, screw the adjusting screw upwards to a certain height, lower it to the desired height, and then tighten the fixing bolts to shrink and fix the distance. This reduces the distance between the ink transfer roller body and the ink fountain roller 7 and ink transfer roller 8 to a state with low noise and no vibration. Repeat this adjustment to solve the wear and tear problem, eliminating the need to directly replace the ink transfer roller. Once the center of the ink transfer roller body is aligned with the center of the ink fountain roller 7 and ink transfer roller 8, and the distance can no longer be shrunk and adjusted, a new ink transfer roller can be replaced as needed. With this design, the ink transfer roller, which previously needed to be replaced every six months, can now be extended to more than two and a half years, reducing costs. Moreover, the upper and lower swing arms are easy to disassemble and replace.

Claims

1. An adjustable, long-life ink transfer roller, characterized in that, It includes an ink transfer roller body, a swing shaft, separable swing arms, and springs. The separable swing arms consist of an upper swing arm and a lower swing arm. The two ends of the swing shaft are rotatably mounted on the two side plates of the printing press. A separable swing arm is mounted on each side of the swing shaft near the side plate. The lower swing arm is fixedly mounted on the swing shaft in the middle. The lower end of the upper swing arm is adjustablely fixedly connected to the upper end of the lower swing arm. The two ends of the ink transfer roller body are rotatably mounted on the middle of the upper swing arm. The lower side of the upper end of the upper swing arm is connected to the corresponding side plate via a spring. The spring is located on the ink transfer roller. The lower side of the main body; a rectangular flange is designed and installed at the lower end of the upper swing arm. Two fixing holes are opened on each of the corresponding two sides of the rectangular flange, and a first threaded hole is opened on each of the remaining two sides of the rectangular flange. An ejector adjusting screw is rotated in the first threaded hole. Two second threaded holes are opened at the upper end of the lower swing arm. The two sides of the rectangular flange of the upper swing arm are connected by fixing bolts passing through the fixing holes and screwed into the second threaded holes of the lower swing arm. The lower end of the ejector adjusting screw is rotated in the first threaded hole and rests on the upper end face of the upper swing arm.

2. The adjustable long-life ink transfer roller according to claim 1, characterized in that, The ejector adjusting screw is also screwed with a locking nut, which presses against the rectangular flange.

Images