A paper pressing structure for a printing machine

Abstract

This utility model discloses a paper pressing structure for a printing press, relating to the field of printing press technology. It includes a main body and a paper pressing assembly. An unwinding roller is located at the front end of the main body, and the paper pressing assembly is located above the front end of the main body. The paper pressing assembly includes a mounting frame, a hydraulic cylinder, a movable cross plate, a limiting block, a movable slider, a threaded groove, fastening bolts, a spring damping rod, and a pressure roller. A hydraulic cylinder is mounted on the upper middle part of the mounting frame, and a movable cross plate is mounted on the front end of the hydraulic cylinder. A limiting block is located at the lower end of the movable cross plate, and a movable slider is externally connected to the limiting block. A threaded groove is formed in the middle of the movable slider's interior. This paper pressing structure for a printing press can adjust the pressure in sections using multiple short rollers, thereby adapting to the tension requirements of paper in different areas. Furthermore, when a single short roller is damaged, only localized material feeding is affected, resulting in lower repair or replacement costs and improving the flexibility and responsiveness of the paper pressing structure during use.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically to a paper pressing structure for a printing press. Background Technology

[0002] A printing press is a mechanical device that transfers text, images, or patterns onto substrates such as paper and textiles. It achieves mass reproduction through inking on a printing plate. It mainly consists of mechanisms for plate mounting, inking, printing, and paper feeding. It can transfer images and text from a printing plate onto substrates of various materials such as paper, plastic, and textiles, and is suitable for publications in fields such as books, packaging, and electronics. When processing paper, a printing press requires paper feeding, and the paper pressing structure is a key component for controlling the stability of paper feeding. To improve the efficiency of the printing press, a new paper pressing structure is needed; however, existing paper pressing structures still have the following shortcomings: When using existing paper pressing structures, most paper pressing structures use long pressure rollers to press and transport materials. However, long pressure rollers are only suitable for large-area paper conveying operations. At the same time, long pressure rollers cannot adjust the pressure in sections, which makes it impossible for the pressure rollers to adapt to the tension requirements of paper in different areas. This affects the overall processing and causes problems such as reduced practicality and efficiency of the paper pressing structure. Utility Model Content

[0003] The purpose of this invention is to provide a paper pressing structure for a printing press to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a paper pressing structure for a printing press, comprising a main body and a paper pressing assembly. A unwinding roller is provided at the front end of the main body, and the paper pressing assembly is located above the front end of the main body. The paper pressing assembly includes a mounting frame, a hydraulic cylinder, a movable horizontal plate, a limiting block, a movable slider, a threaded groove, a fastening bolt, a spring damping rod, and a pressure roller. A hydraulic cylinder is mounted in the middle of the upper end of the mounting frame, and a movable horizontal plate is mounted at the front end of the hydraulic cylinder. A limiting block is provided at the lower end of the movable horizontal plate, and a movable slider is externally connected to the limiting block. A threaded groove is formed in the middle of the interior of the movable slider, and a fastening bolt is connected inside the threaded groove. A spring damping rod is mounted in the middle of the lower end of the movable slider, and a pressure roller is mounted at the front end of the spring damping rod. A limiting assembly is provided on the side of the unwinding roller near the main body.

[0005] Furthermore, the external dimensions of the limiting block are adapted to the internal dimensions of the movable slider, and the movable slider is slidably connected to the movable horizontal plate through the limiting block.

[0006] Furthermore, the internal dimensions of the threaded groove are adapted to the external dimensions of the fastening bolt, and the fastening bolt is rotatably connected to the movable slider through the threaded groove.

[0007] Furthermore, the spring damping rod is perpendicular to the pressure roller, and the pressure roller is elastically connected to the movable slider through the spring damping rod.

[0008] Furthermore, the limiting component includes a threaded mounting groove, a threaded rotating rod, an auxiliary rotating handle, a limiting frame, and a return spring. The threaded mounting groove is connected to the threaded rotating rod, and the auxiliary rotating handle is installed at the rear end of the threaded rotating rod. The front end of the threaded rotating rod is connected to the limiting frame, and a return spring is installed at the upper end of the limiting frame.

[0009] Furthermore, the limiting component also includes a guide roller, a mounting block, a limiting through hole, and a limiting crossbar. The front end of the reset spring is equipped with a guide roller, and the lower middle part of the limiting frame is provided with a mounting block. The mounting block has a limiting through hole inside, and a limiting crossbar is connected inside the limiting through hole.

[0010] Furthermore, the reset spring is perpendicular to the guide roller, and the guide roller is elastically connected to the limiting frame through the reset spring.

[0011] Furthermore, the internal dimensions of the limiting through hole are adapted to the external dimensions of the limiting crossbar, and the limiting crossbar is connected to the mounting block through the limiting through hole.

[0012] This utility model provides a paper pressing structure for a printing press, which has the following advantages: 1. By setting up the paper pressing assembly, this utility model enables the pressure roller and the movable slider to be elastically connected through the spring damping rod when the paper pressing structure is used in the printing press. The number of pressure rollers can be increased or decreased according to the needs of use. Multiple short rollers can adjust the pressure in sections to adapt to the tension requirements of different areas. At the same time, when a single short roller is damaged, only the local material feeding is affected, the repair or replacement cost is lower, and the flexibility and dynamism of the paper pressing structure during use are improved.

[0013] 2. By setting up a limiting component, this utility model can increase the stability of the mounting block during movement when the paper pressing structure is used in a printing press by using a limiting through hole in conjunction with a limiting crossbar. This prevents the limiting frame from shifting position during movement. The position of the limiting frame can be adjusted according to the size of the paper to be processed. Inside the limiting frame, a return spring makes the guide roller elastically connected to the limiting frame. The guide roller limits the side of the paper, preventing deformation or wrinkles during paper feeding, thus improving the overall practicality and efficiency of the paper pressing structure. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional unfolded structure of the paper pressing component of this utility model; Figure 3This is a schematic diagram of the three-dimensional unfolded structure of the limiting component of this utility model.

[0015] In the diagram: 1. Main body; 2. Unwinding roller; 3. Paper pressing assembly; 301. Mounting frame; 302. Hydraulic cylinder; 303. Movable cross plate; 304. Limiting block; 305. Movable slider; 306. Threaded groove; 307. Fastening bolt; 308. Spring damping rod; 309. Pressing roller; 4. Limiting assembly; 401. Threaded mounting groove; 402. Threaded rotating rod; 403. Auxiliary throttle; 404. Limiting frame; 405. Return spring; 406. Guide roller; 407. Mounting block; 408. Limiting through hole; 409. Limiting cross bar. Detailed Implementation

[0016] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0017] like Figure 1 and Figure 2As shown, a paper pressing structure for a printing press includes a main body 1 and a paper pressing assembly 3. A unwinding roller 2 is located at the front end of the main body 1, and the paper pressing assembly 3 is located above the front end of the main body 1. The paper pressing assembly 3 includes a mounting frame 301, a hydraulic cylinder 302, a movable cross plate 303, a limiting block 304, a movable slider 305, a threaded groove 306, a fastening bolt 307, a spring damping rod 308, and a pressing roller 309. The hydraulic cylinder 302 is mounted on the upper middle part of the mounting frame 301, and the movable cross plate 303 is mounted on the front end of the hydraulic cylinder 302. A limiting block 304 is located at the lower end of the movable cross plate 303. The limiting block 304... 04. An externally connected movable slider 305 is provided. A threaded groove 306 is formed in the middle of the movable slider 305, and a fastening bolt 307 is connected inside the threaded groove 306. A spring damping rod 308 is installed in the middle of the lower end of the movable slider 305, and a pressure roller 309 is installed at the front end of the spring damping rod 308. The external dimensions of the limiting block 304 are adapted to the internal dimensions of the movable slider 305, and the movable slider 305 is slidably connected to the movable cross plate 303 through the limiting block 304. The internal dimensions of the threaded groove 306 are adapted to the external dimensions of the fastening bolt 307, and the fastening bolt 307 is connected to the movable slider through the threaded groove 306. 305 is rotatably connected. The spring damping rod 308 and the pressure roller 309 are perpendicularly distributed, and the pressure roller 309 is elastically connected to the movable slider 305 through the spring damping rod 308. The hydraulic cylinder 302 is fixedly installed in the middle of the upper end of the mounting bracket 301 by mounting bolts. The operation of the hydraulic cylinder 302 drives the movable cross plate 303 to move in position, and adjusts the position height of the limit block 304 accordingly, so that the movable slider 305 is slidably installed on the outside of the limit block 304. The internal dimensions of the threaded groove 306 opened inside the movable slider 305 are adapted to the external dimensions of the fastening bolt 307, so that the threaded groove 306 can be used to... The fastening bolt 307 is screwed into the interior of the movable slider 305, and the position of the movable slider 305 is fixed by the fastening bolt 307. The spring damping rod 308 is fixedly installed in the middle of the lower end of the movable slider 305. The pressure roller 309 is elastically connected to the movable slider 305 through the spring damping rod 308. The number of pressure rollers 309 can be increased or decreased according to the needs of use. Multiple short rollers can adjust the pressure in sections to adapt to the tension requirements of different areas. At the same time, when a single short roller is damaged, it only affects the local material feeding, and the repair or replacement cost is lower, which improves the flexibility and dynamism of the paper pressing structure during use.

[0018] like Figure 1 and Figure 3As shown, a limit assembly 4 is provided on the side of the unwinding roller 2 near the main body 1. The limit assembly 4 includes a threaded mounting groove 401, a threaded rotating rod 402, an auxiliary handle 403, a limit frame 404, and a return spring 405. The threaded rotating rod 402 is connected inside the threaded mounting groove 401, and the auxiliary handle 403 is installed at the rear end of the threaded rotating rod 402. The limit frame 404 is connected to the front end of the threaded rotating rod 402, and a return spring 405 is installed at the upper end of the limit frame 404. The limit assembly 4 also includes a guide roller 406, a mounting block 407, a limit through hole 408, and a limit... The positioning crossbar 409 has a guide roller 406 mounted at the front end of the return spring 405. A mounting block 407 is located at the lower center of the limiting frame 404, and a limiting through hole 408 is formed inside the mounting block 407. The limiting crossbar 409 is connected inside the limiting through hole 408. The return spring 405 and the guide roller 406 are perpendicularly distributed, and the guide roller 406 is elastically connected to the limiting frame 404 via the return spring 405. The internal dimensions of the limiting through hole 408 are adapted to the external dimensions of the limiting crossbar 409, and the limiting crossbar 409 is connected to the mounting block 407 via the limiting through hole 408. The connection is achieved by rotating the threaded rod 402 into the main body 1 through the threaded mounting groove 401 inside the main body 1. An auxiliary handle 403 enhances the ease of rotation of the threaded rod 402. A movable shaft secures the limiting frame 404 to the front end of the threaded rod 402. Rotation of the threaded rod 402 causes the limiting frame 404 to move accordingly. The mounting block 407 is then fixedly installed at the lower center of the limiting frame 404. The internal dimensions of the limiting through hole 408 inside the mounting block 407 are matched to the external dimensions of the limiting crossbar 409. The stability of the mounting block 407 during movement is increased by using the limiting through hole 408 in conjunction with the limiting crossbar 409, thereby preventing positional deviation when the limiting frame 404 moves. The position of the limiting frame 404 is adjusted according to the size of the paper to be processed, thus preventing positional deviation of the paper during conveying. Inside the limiting frame 404, the guide roller 406 is elastically connected to the limiting frame 404 by the return spring 405. The guide roller 406 is used to limit the side of the paper, preventing deformation or wrinkling of the paper during conveying, and improving the overall practicality and efficiency of the paper pressing structure.

[0019] In summary, this printing press uses a paper-pressing structure. During operation, the unwinding roller 2 at the front end of the main body 1 first conveys the paper to be processed. The rotation of the threaded rod 402 drives the positional movement of the limiting frame 404. The limiting through-hole 408, in conjunction with the limiting crossbar 409, increases the stability of the mounting block 407 during movement, thus preventing positional deviation of the limiting frame 404. The position of the limiting frame 404 is adjusted according to the size of the paper to be processed, further preventing positional deviation during conveying. Inside the limiting frame 404, a return spring 405 elastically connects the guide roller 406 to the limiting frame 404. The guide roller 406 limits the sides of the paper, preventing deformation or wrinkling during conveying. Then… The hydraulic cylinder 302 moves the movable horizontal plate 303, adjusting the height of the limiting block 304 accordingly. The movable slider 305 is then slidably mounted on the outside of the limiting block 304. Fastening bolts 307 are screwed into the movable slider 305 through the threaded groove 306, simultaneously fixing its position. A spring damping rod 308 elastically connects the pressure roller 309 to the movable slider 305. The number of pressure rollers 309 can be increased or decreased as needed. Multiple short rollers allow for segmented pressure adjustment to meet the tension requirements of different areas. Furthermore, damage to a single short roller only affects localized material feeding, resulting in lower repair or replacement costs and enhancing the flexibility and responsiveness of the paper pressing structure during use. The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A paper pressing structure for a printing press, comprising a main body (1) and a paper pressing assembly (3), characterized in that, The main body (1) is provided with a unwinding roller (2) at the front end, and a paper pressing assembly (3) is provided above the front end of the main body (1). The paper pressing assembly (3) includes a mounting frame (301), a hydraulic cylinder (302), a movable cross plate (303), a limit block (304), a movable slider (305), a threaded groove (306), a fastening bolt (307), a spring damping rod (308), and a pressing roller (309). The hydraulic cylinder (302) is installed in the middle of the upper end of the mounting frame (301), and a movable cross plate (309) is installed at the front end of the hydraulic cylinder (302). 3), and a limit block (304) is provided at the lower end of the movable horizontal plate (303), and a movable slider (305) is connected to the outside of the limit block (304). A threaded groove (306) is provided in the middle of the movable slider (305), and a fastening bolt (307) is connected inside the threaded groove (306). A spring damping rod (308) is installed in the middle of the lower end of the movable slider (305), and a pressure roller (309) is installed at the front end of the spring damping rod (308). A limit component (4) is provided on the side of the unwinding roller (2) near the main body (1).

2. The paper pressing structure for a printing press according to claim 1, characterized in that, The external dimensions of the limiting block (304) are adapted to the internal dimensions of the movable slider (305), and the movable slider (305) is slidably connected to the movable horizontal plate (303) through the limiting block (304).

3. The paper pressing structure for a printing press according to claim 1, characterized in that, The internal dimensions of the threaded groove (306) are adapted to the external dimensions of the fastening bolt (307), and the fastening bolt (307) is rotatably connected to the movable slider (305) through the threaded groove (306).

4. The paper pressing structure for a printing press according to claim 1, characterized in that, The spring damping rod (308) is perpendicular to the pressure roller (309), and the pressure roller (309) is elastically connected to the movable slider (305) through the spring damping rod (308).

5. The paper pressing structure for a printing press according to claim 1, characterized in that, The limiting component (4) includes a threaded mounting groove (401), a threaded rotating rod (402), an auxiliary throttle (403), a limiting frame (404), and a return spring (405). The threaded mounting groove (401) is connected to the threaded rotating rod (402), and the auxiliary throttle (403) is installed at the rear end of the threaded rotating rod (402). The front end of the threaded rotating rod (402) is connected to the limiting frame (404), and the upper end of the limiting frame (404) is installed with a return spring (405).

6. The paper pressing structure for a printing press according to claim 5, characterized in that, The limiting component (4) further includes a guide roller (406), a mounting block (407), a limiting through hole (408), and a limiting crossbar (409). The guide roller (406) is installed at the front end of the reset spring (405). The mounting block (407) is provided at the middle of the lower end of the limiting frame (404). The mounting block (407) has a limiting through hole (408) inside, and the limiting through hole (408) is connected to the limiting crossbar (409).

7. A paper pressing structure for a printing press according to claim 6, characterized in that, The reset spring (405) is perpendicular to the guide roller (406), and the guide roller (406) is elastically connected to the limiting frame (404) through the reset spring (405).

8. A paper pressing structure for a printing press according to claim 6, characterized in that, The internal dimensions of the limiting through hole (408) are adapted to the external dimensions of the limiting crossbar (409), and the limiting crossbar (409) is connected to the mounting block (407) through the limiting through hole (408).

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