Material pulling device for paper color printing

Abstract

The invention belongs to the technical field of paper color printing, particularly relates to a material pulling device for paper color printing, and aims at solving the problem that a gap between a material pulling roller and a rubber supporting roller is larger and larger due to the fact that an existing rubber pressing roller matched with the material pulling roller to work is abraded after working for a long time. A material pulling roller is rotatably mounted at the bottom end in the mounting frame, a rubber roller is arranged at the upper end in the mounting frame, top plates and a bottom plate are fixedly mounted at the upper and lower ends of the outer walls of the two sides of the mounting frame correspondingly, a driving motor is fixedly mounted at the top end of one top plate, and a dust scraping assembly is slidably arranged at the top end of the mounting frame. When a pressure sensing assembly monitors that the pushing pressure of a plurality of pushing pieces becomes small and a plurality of pressure values fluctuate greatly, a plurality of electric push rods push a rotating disc to move upwards until the rotating disc is matched with a screw rod, the rotating disc rotates along with a first rotating shaft, and then the screw rod drives a cam to rotate; the effect that the cam adjusts the sliding frame to lift the rubber roller to adjust the distance between the rubber roller and the material pulling roller is achieved.

Description

Technical Field

[0001] This invention relates to the field of paper color printing technology, and in particular to a paper feeding device for paper color printing. Background Technology

[0002] Color printing refers to the technique of printing multiple times on the same printing plate using different colored plates to achieve a color image effect. It involves processes such as plate making, inking, and pressing to transfer ink to the surface of materials like paper, textiles, and leather, thus mass-producing the original content. After color printing, paper can be used as packaging paper, printing paper, industrial paper, office paper, cultural paper, household paper, and specialty paper, etc. After printing, the paper needs to be pulled out of the printing press by rollers. A search revealed a patent with publication number CN210914521U3 entitled "A Paper Pulling Device for Color Printing." The technical problem it addresses is that during color printing, a large amount of ink adheres to the paper surface, and the printing process generates significant heat, making the paper extremely hot and unsuitable for direct handling. The device utilizes a retractable component to move the equipment box and clamping component to the color printer. The clamping component opens, and the retractable component moves it to the printed paper, positioning it between the output ends of the clamping component. The clamping component then closes, holding the paper in place, and the retractable component pulls it back above the collection box, releasing the paper and allowing it to fall into the collection box without affecting the subsequent clamping of other papers. Users can collect the paper after it cools and the ink dries completely, thus preventing users from touching excessively hot paper and getting ink on it.

[0003] However, the following drawbacks still need to be addressed: the rubber pressure roller that works in conjunction with the material pulling roller will wear out after long-term operation, resulting in a larger and larger gap between the material pulling roller and the rubber support roller, and even a phenomenon of stalling rotation, which leads to a faster material pulling speed, ultimately causing the ink to overlap and resulting in unclear printing. Summary of the Invention

[0004] Based on the existing technical problem that the rubber pressure roller that works in conjunction with the material pulling roller will wear out after long-term operation, resulting in an increasingly larger gap between the material pulling roller and the rubber support roller, this invention proposes a material pulling device for paper color printing.

[0005] This invention proposes a paper-pulling device for color printing, comprising a mounting frame, a pulling roller rotatably mounted at the bottom of the mounting frame, a rubber roller mounted at the upper end of the mounting frame, a top plate and a bottom plate fixedly mounted at the upper and lower ends of the outer walls on both sides of the mounting frame, and a drive motor fixedly mounted at the top of one of the top plates, a dust scraping component slidably mounted at the top of the mounting frame, a dust removal component fixedly mounted at the top of the mounting frame, a first rotating shaft fixedly mounted at the output end of the drive motor, and a second rotating shaft mounted at the bottom end of the first rotating shaft, the two second rotating shafts penetrating the bottom plate and extending to the outside of the bottom plate, pulleys fixedly mounted at the bottom ends of the two second rotating shafts, and a conveyor belt sleeved between the two pulleys, a cam rotatably mounted at the middle of the mounting frame, and sliding frames rotatably mounted on both sides of the rubber roller via bearings, with the cam on each side engaging with the bottom end of the sliding frame, a first transmission component positioned between the outer side of the rubber roller and the circumference of the first rotating shaft, a second transmission component positioned between the outer side of the pulling roller and the lower end of the circumference of the second rotating shaft, and a third transmission component positioned between the outer side of the cam and the bottom end of the circumference of the first rotating shaft.

[0006] Preferably, the dust scraping assembly includes a dust scraping strip, which is wavy. The bottom end of the dust scraping strip is attached to the outer circumference of the rubber roller. Support rods are fixedly installed on both sides of the top end of the dust scraping strip, and pressure rods are fixedly installed on the top ends of the two support rods. The pressure rods are made of counterweight material.

[0007] Preferably, the dust removal assembly includes a dust removal fan, and a manifold is fixedly connected to the negative pressure inlet end of the dust removal fan. Multiple equally spaced suction branch pipes are fixedly connected to one end of the circumference of the manifold, and the inlet end of each suction branch pipe is located outside the bend of the dust scraper.

[0008] Preferably, a limiting groove is provided in the middle of the upper ends of both sides of the mounting frame, and sliding grooves are provided at both ends of the upper ends of both sides of the mounting frame, and the limiting groove and the two sliding grooves on each side are slidably connected with the sliding frame.

[0009] Preferably, both the first transmission component and the second transmission component are composed of a driving bevel gear and a transmission bevel gear.

[0010] Preferably, a receiving plate is fixedly installed at the bottom circumference of the first rotating shaft, and an inlay groove is opened in the middle of the bottom end of the receiving plate. Multiple electric push rods with equal angles are fixedly installed inside the receiving plate. The movable end of the electric push rod passes through the receiving plate and extends to the top of the receiving plate. A rotating disk is fixedly installed at the top of the multiple electric push rods. A toothed block is fixedly installed at the top of the second rotating shaft, and the toothed block matches the inlay groove.

[0011] Preferably, the third transmission component includes a screw, which is fixedly installed on the outer wall of the cam and is located at the top of the rotating disk.

[0012] Preferably, a rubber sleeve is provided on the outer side of the rubber roller, and an airbag sleeve and a reset roller are provided on the inner side of the rubber roller. The rubber sleeve, the airbag sleeve, and the reset roller are sequentially sleeved together. The inner circumference of the airbag sleeve is provided with multiple arc-shaped protrusions, and the outer circumference of the reset roller is provided with multiple top blocks, and each top block is located between two adjacent arc-shaped protrusions.

[0013] Preferably, a shrinkage frame is sleeved on both sides of the circumference of the rubber roller, and a sleeve is fixedly installed between the fixed ends of the two shrinkage frames. A pressure sensing component is fixedly installed inside the sleeve, and multiple pushers are slidably sleeved on one end of the circumference of the sleeve. A limit block is provided on the inner side of the pusher, and a compression ball is provided on the outer side of the pusher.

[0014] Preferably, a heat transfer mesh plate is laid at the bottom of the interior of the mounting frame, and the heat transfer mesh plate is located at the top of the conveyor belt.

[0015] The beneficial effects of this invention are as follows: This invention proposes a paper-pulling device for color printing. A second rotating shaft is embedded and engaged at the bottom of a receiving tray, allowing the second and first rotating shafts to rotate in the same direction and at the same speed. A conveyor belt is positioned between the bottom ends of the two second rotating shafts, making the rubber roller more stable during lifting and rotation. A first transmission component is located between the outer side of the rubber roller and the circumference of the first rotating shaft. A second transmission component is located between the outer side of the pulling roller and the lower end of the circumference of the second rotating shaft. A third transmission component is located between the outer side of the cam and the lower end of the circumference of the first rotating shaft. When the drive motor rotates the first rotating shaft, the first transmission component rotates the rubber roller, and the second rotation component rotates the pulling roller. When the pressure sensing component detects a decrease in the pressure of multiple pushers and large fluctuations in multiple pressure values, multiple electric push rods push the rotating disk upwards until it mates with the screw. The rotating disk rotates with the first rotating shaft, which in turn causes the screw to drive the cam to rotate, achieving the effect of adjusting the distance between the rubber roller and the pulling roller by adjusting the sliding frame.

[0016] This invention proposes a paper-printing material pulling device. The dust scraping assembly includes a dust scraping strip, two support rods, and a pressure rod. The dust removal assembly includes a dust removal fan, a collection pipe, and multiple suction branch pipes. The pressure rod is made of a counterweight material. Under the action of gravity, the pressure rod is always pressed down, so that the two support rods push the dust scraping strip to always keep it in contact with the top edge of the rubber roller. This helps to scrape off the floating dust adhering to the surface of the rubber roller. At the same time, the dust removal fan works. The inlet end of each suction branch pipe is located outside the bend of the wavy dust scraping strip, collecting the floating dust and transferring it to the collection pipe, thereby keeping the surface of the rubber roller clean.

[0017] The present invention proposes a paper feeding device for color printing, which consists of a rubber sleeve, an air bladder sleeve, and a reset roller connected in sequence. When a certain part of the rubber sleeve is temporarily recessed, it will cause air to flow inside the air bladder sleeve and deform the inner bulge. The reset roller is provided with multiple top blocks on the outer circumference, which can reset the deformation of the inner bulge of the air bladder sleeve, thereby helping the rubber roller to recover after temporary deformation and keeping the outer circumference of the rubber roller intact. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a paper feeding device for color printing proposed in this invention; Figure 2 This is a bottom view of the paper feeding device for color printing proposed in this invention. Figure 3 This is a schematic diagram of the structure of a dust removal fan for a paper feeding device in color printing according to the present invention; Figure 4 This is a schematic diagram of the dust scraper of a paper feeding device for color printing proposed in this invention; Figure 5 This is a schematic diagram of the structure of a paper feeding device pusher proposed in this invention; Figure 6 This is a schematic diagram of the first and second transmission components of a paper feeding device for color printing according to the present invention. Figure 7 This is a bottom view of the receiving tray of a paper feeding device for color printing proposed in this invention; Figure 8 This is a schematic diagram of the structure of a rubber roller in a paper color printing device proposed in this invention.

[0019] In the diagram: 1. Mounting frame, 2. Pulling roller, 3. Rubber roller, 4. Dust removal fan, 5. Top plate, 6. Bottom plate, 7. Drive motor, 8. Sliding frame, 9. First rotating shaft, 10. Second rotating shaft, 11. Heat transfer mesh plate, 12. Slide groove, 13. Converging pipe, 14. Dust suction branch pipe, 15. Pressure rod, 16. Support rod, 17. Limiting groove, 18. Pulley, 19. Conveyor belt, 20. Shrink frame, 21. Sleeve, 22. Pressure sensing component, 23. Pushing component, 24. Dust scraper strip, 25. First transmission component, 26. Second transmission component, 27. Cam, 28. Screw, 29. Rotary disk, 30. Receiving plate, 31. Electric push rod, 32. Tooth block, 33. Inlay groove, 34. Rubber sleeve, 35. Airbag sleeve, 36. Reset roller. Detailed Implementation

[0020] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0021] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0022] Reference Figure 1-8 A paper-printing material pulling device includes a mounting frame 1. A material pulling roller 2 is rotatably mounted at the bottom of the mounting frame 1. A rubber roller 3 is provided at the upper end of the mounting frame 1. A top plate 5 and a bottom plate 6 are fixedly mounted at the upper and lower ends of the outer walls on both sides of the mounting frame 1, respectively. A drive motor 7 is fixedly mounted at the top of one of the top plates 5. A dust scraping component is slidably provided at the top of the mounting frame 1. A dust removal component is fixedly provided at the top of the mounting frame 1. A first rotating shaft 9 is fixedly mounted at the output end of the drive motor 7. A second rotating shaft 10 is provided at the bottom end of the first rotating shaft 9. The two second rotating shafts 10 pass through the bottom plate 6 and... Extending to the outer side of the base plate 6, two second rotating shafts 10 are fixedly mounted with pulleys 18 at their bottom ends, and a conveyor belt 19 is sleeved between the two pulleys 18. A cam 27 is rotatably mounted in the middle of the mounting frame 1. Sliding frames 8 are rotatably mounted on both sides of the rubber roller 3 through bearings, and the cam 27 on each side is in contact with the bottom end of the sliding frame 8. A first transmission component 25 is set between the outer side of the rubber roller 3 and the circumference of the first rotating shaft 9. A second transmission component 26 is set between the outer side of the pulling roller 2 and the lower end of the circumference of the second rotating shaft. A third transmission component is set between the outer side of the cam 27 and the bottom end of the circumference of the first rotating shaft 9.

[0023] In this invention, the dust scraping assembly includes a dust scraping strip 24, which is wavy. The bottom end of the dust scraping strip 24 is attached to the outer circumference of the rubber roller 3. Support rods 16 are fixedly installed on both sides of the top end of the dust scraping strip 24. Pressure rods 15 are fixedly installed on the top ends of the two support rods 16. The pressure rods 15 are made of counterweight material. The pressure rods 15 are always pressed down under the action of gravity, so that the two support rods 16 push the dust scraping strip 24 to always be attached to the top circumference of the rubber roller 3, which helps to scrape off the floating dust on the surface of the rubber roller 3. At the same time, the dust removal fan 4 works. The inlet end of each dust suction branch pipe 14 is located outside the bend of the dust scraping strip 24, collecting the floating dust and transferring it to the collection pipe 13, thereby keeping the surface of the rubber roller 3 clean. The dust removal assembly includes a dust removal fan 4, and a manifold 13 is fixedly connected to the negative pressure inlet end of the dust removal fan 4. Multiple suction branch pipes 14 at equal intervals are fixedly connected to one end of the circumference of the manifold 13, and the inlet end of each suction branch pipe 14 is located outside the bend of the dust scraper 24. Limiting grooves 17 are provided in the middle of the upper ends of both sides of the mounting frame 1, and sliding grooves 12 are provided at both ends of the upper ends of both sides of the mounting frame 1. The limiting groove 17 on each side and the two sliding grooves 12 are slidably connected with the sliding frame 8, so that the rubber roller 3 and the sliding frame 8 are limited to slide. Both the first transmission assembly 25 and the second transmission assembly 26 are composed of a driving bevel gear and a transmission bevel gear; A receiving plate 30 is fixedly installed at the bottom of the first rotating shaft 9, and an inlay groove 33 is opened in the middle of the bottom of the receiving plate 30. Multiple electric push rods 31 with equal angles are fixedly installed inside the receiving plate 30. The movable end of the electric push rod 31 passes through the receiving plate 30 and extends to the top of the receiving plate 30. A rotating disk 29 is fixedly installed at the top of the multiple electric push rods 31. A toothed block 32 is fixedly installed at the top of the second rotating shaft 10, and the toothed block 32 matches the inlay groove 33. When the pressure sensing component 22 detects that the pressure of the multiple pushers 23 pushes back decreases and the multiple pressure values ​​fluctuate greatly, the multiple electric push rods 31 push the rotating disk 29 to move up until it matches the screw 28. The rotating disk 29 rotates with the first rotating shaft 9, which in turn causes the screw 28 to drive the cam 27 to rotate, so that the cam 27 adjusts the sliding frame 8 to adjust the distance between the rubber roller 3 and the pulling roller 2. The third transmission assembly includes a screw 28, which is fixedly installed on the outer wall of the cam 27, and the screw 28 is located at the top of the rotating disk 29; A rubber sleeve 34 is provided on the outer side of the rubber roller 3, and an airbag sleeve 35 and a reset roller 36 are provided on the inner side of the rubber roller 3. The rubber sleeve 34, airbag sleeve 35, and reset roller 36 are sequentially sleeved. The inner circumference of the airbag sleeve 35 is provided with multiple arc-shaped protrusions, and the outer circumference of the reset roller 36 is provided with multiple top blocks, each of which is located between two adjacent arc-shaped protrusions. Through the sequential sleeve connection of the rubber sleeve 34, airbag sleeve 35, and reset roller 36, when a certain part of the rubber sleeve 3 is temporarily recessed, it will cause air to flow inside the airbag sleeve 35 and deform the protrusions on its inner side. The multiple top blocks on the outer circumference of the reset roller 36 can restore the deformation of the protrusions on the inner side of the airbag sleeve 35, thereby helping the rubber roller 3 to recover after temporary deformation and also keeping the outer circumference of the rubber roller 3 intact. Shrinkage frames 20 are sleeved on both sides of the circumference of the rubber roller 3, and a sleeve 21 is fixedly installed between the fixed ends of the two shrinkage frames 20. A pressure sensing component 22 is fixedly installed inside the sleeve 21. Multiple pushers 23 are slidably sleeved on one end of the circumference of the sleeve 21. A limit block is provided on the inner side of the pusher 23, and a compression ball is provided on the outer side of the pusher 23. Under the action of the two shrinkage frames 20, the multiple pushers 23 are made to fit against the outer side of the circumference of the rubber roller 3. A heat transfer mesh plate 11 is laid at the bottom of the inner side of the mounting frame 1, and the heat transfer mesh plate 11 is located at the top of the conveyor belt 19, which helps to dissipate heat from the paper and the pulling roller 2.

[0024] Working principle: A second rotating shaft 10 is embedded and snapped into the bottom of the receiving plate 30, allowing the second rotating shaft 10 and the first rotating shaft 9 to rotate in the same direction and at the same speed. A conveyor belt 19 is set between the bottom ends of the two second rotating shafts 10, making the rubber roller 3 more stable during lifting and rotation. A first transmission component 25 is set between the outer side of the rubber roller 3 and the circumference of the first rotating shaft 9, a second transmission component 26 is set between the outer side of the pulling roller 2 and the lower end of the circumference of the second rotating shaft, and a third transmission component is set between the outer side of the cam 27 and the bottom end of the circumference of the first rotating shaft 9, so that the drive... When the motor 7 operates and causes the first rotating shaft 9 to rotate, the first transmission component 25 causes the rubber roller 3 to rotate, the second rotating component 26 causes the pulling roller 2 to rotate, and when the pressure sensing component 22 detects that the pressure of the multiple pushers 23 pushes back decreases and the multiple pressure values ​​fluctuate greatly, the multiple electric push rods 31 push the rotating disk 29 to move upward until it is paired with the screw 28. The rotating disk 29 rotates with the first rotating shaft 9, which in turn causes the screw 28 to drive the cam 27 to rotate, so that the cam 27 adjusts the sliding frame 8 to adjust the distance between the rubber roller 3 and the pulling roller 2. The dust removal assembly includes a dust scraper 24, two support rods 16, and a pressure rod 15. The dust removal assembly includes a dust removal fan 4, a collection pipe 13, and multiple suction branch pipes 14. The pressure rod 15 is made of counterweight material. Under the action of gravity, the pressure rod 15 is always pressed down, so that the two support rods 16 push the dust scraper 24 to always be in contact with the top edge of the circumference of the rubber roller 3, which helps to scrape off the floating dust on the surface of the rubber roller 3. At the same time, the dust removal fan 4 works. Since the inlet end of each suction branch pipe 14 is located outside the bend of the wavy dust scraper 24, the floating dust is collected and transferred to the collection pipe 13, thereby keeping the surface of the rubber roller 3 clean. By sequentially connecting the rubber sleeve 34, the airbag sleeve 35, and the reset roller 36, when a certain part of the rubber sleeve 3 is temporarily recessed, it will cause air to flow inside the airbag sleeve 35 and deform the inner protrusion. The reset roller 36 has multiple top blocks on its outer circumference, which can reset the deformation of the inner protrusion of the airbag sleeve 35, thereby helping the rubber roller 3 to recover after a short deformation, and also keeping the outer circumference of the rubber roller 3 intact.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A paper printing pull material device, comprising a mounting frame (1), the inside bottom end of the mounting frame (1) is rotatably installed with a pull material roller (2), the inside upper end of the mounting frame (1) is provided with a rubber roller (3), the upper and lower ends of the two side outer walls of the mounting frame (1) are respectively fixedly installed with a top plate (5) and a bottom plate (6), and the top end of one of the top plates (5) is fixedly installed with a driving motor (7), characterized in that, A dust scraper assembly is slidably mounted on the top of the mounting frame (1), and a dust removal assembly is fixedly mounted on the top of the mounting frame (1). A first rotating shaft (9) is fixedly mounted on the output end of the drive motor (7), and a second rotating shaft (10) is mounted on the bottom end of the first rotating shaft (9). The two second rotating shafts (10) penetrate the base plate (6) and extend to the outside of the base plate (6). Pulleys (18) are fixedly mounted on the bottom ends of the two second rotating shafts (10), and a conveyor belt (19) is sleeved between the two pulleys (18). A cam (27) is rotatably mounted in the middle of the mounting frame (1). A sliding frame (8) is rotatably mounted on both sides of the rubber roller (3) via bearings. The cam (27) on each side is in contact with the bottom of the sliding frame (8). A first transmission component (25) is provided between the outer side of the rubber roller (3) and the circumference of the first rotating shaft (9). A second transmission component (26) is provided between the outer side of the pulling roller (2) and the lower end of the circumference of the second rotating shaft. A third transmission component is provided between the outer side of the cam (27) and the bottom end of the circumference of the first rotating shaft (9).

2. The paper drawing device for color printing according to claim 1, wherein The dust scraping assembly includes a dust scraping strip (24), which is wavy. The bottom end of the dust scraping strip (24) is attached to the outer circumference of the rubber roller (3). Support rods (16) are fixedly installed on both sides of the top end of the dust scraping strip (24). Pressure rods (15) are fixedly installed on the top ends of the two support rods (16), and the pressure rods (15) are made of counterweight material.

3. The paper feeding device for color printing according to claim 2, characterized in that, The dust removal assembly includes a dust removal fan (4), and a collection pipe (13) is fixedly connected to the negative pressure inlet end of the dust removal fan (4). Multiple equally spaced suction branch pipes (14) are fixedly connected to one end of the circumference of the collection pipe (13), and the inlet end of each suction branch pipe (14) is located outside the bend of the dust scraper (24).

4. The paper feeding device for color printing according to claim 1, characterized in that, The upper ends of the mounting frame (1) are provided with limiting grooves (17) and sliding grooves (12) are provided at both ends of the upper ends of the mounting frame (1). The limiting groove (17) and the two sliding grooves (12) on each side are slidably connected to the sliding frame (8).

5. The paper feeding device for color printing according to claim 1, characterized in that, Both the first transmission component (25) and the second transmission component (26) are composed of a driving bevel gear and a transmission bevel gear.

6. The paper feeding device for color printing according to claim 1, characterized in that, The first rotating shaft (9) has a receiving plate (30) fixedly installed at the bottom of its circumference, and the receiving plate (30) has an inlay groove (33) in the middle of its bottom end. Multiple electric push rods (31) with equal angles are fixedly installed inside the receiving plate (30). The movable end of the electric push rod (31) passes through the receiving plate (30) and extends to the top of the receiving plate (30). A rotating disk (29) is fixedly installed at the top of the multiple electric push rods (31). A toothed block (32) is fixedly installed at the top of the second rotating shaft (10), and the toothed block (32) matches the inlay groove (33).

7. A paper feeding device for color printing according to claim 6, characterized in that, The third transmission component includes a screw (28), which is fixedly installed on the outer wall of the cam (27), and the screw (28) is located at the top of the rotating disk (29).

8. The paper feeding device for color printing according to claim 1, characterized in that, A rubber sleeve (34) is provided on the outer side of the rubber roller (3), and an airbag sleeve (35) and a reset roller (36) are provided on the inner side of the rubber roller (3). The rubber sleeve (34), the airbag sleeve (35), and the reset roller (36) are sequentially sleeved together. The inner circumference of the airbag sleeve (35) is provided with multiple arc-shaped protrusions, and the outer circumference of the reset roller (36) is provided with multiple top blocks, and each top block is located between two adjacent arc-shaped protrusions.

9. A paper feeding device for color printing according to claim 1, characterized in that, The rubber roller (3) has a shrinkage frame (20) sleeved on both sides of its circumference, and a sleeve (21) is fixedly installed between the fixed ends of the two shrinkage frames (20). A pressure sensing component (22) is fixedly installed inside the sleeve (21). Multiple pushers (23) are slidably sleeved on one end of the sleeve (21). A limit block is provided on the inner side of the pusher (23), and a compression ball is provided on the outer side of the pusher (23).

10. A paper feeding device for color printing according to claim 1, characterized in that, The bottom of the mounting frame (1) is covered with a heat transfer mesh plate (11), and the heat transfer mesh plate (11) is located at the top of the conveyor belt (19).

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