Manual roller printing machine

Abstract

The embodiment of the invention provides a manual roller printing machine, and relates to the technical field of roller printing machines. A manual roller printing machine comprises a roller printing shaft, the two ends of the roller printing shaft are open, the interior of the roller printing shaft is hollow, a fixing block is arranged in the roller printing shaft, third roller shafts are fixed to the two ends of the fixing block respectively, the third roller shafts are arranged in the circle centers of the openings of the roller printing shaft, and a lifting groove is upwards formed in the bottom of the peripheral face of the fixing block. A vibration cylinder capable of lifting and displacing is coaxially arranged in a lifting groove, when a roll printing shaft needs to conduct roll printing on raw materials to form biscuits, a crank drives a crank shaft at the moment, then a rotating block rotates, the rotating block can pull a positioning pin upwards through a spiral sliding way in the rotating process, and the vibration cylinder continuously compresses a spring in the upward moving process; when the positioning pin crosses the highest point of the spiral slide way, the positioning pin can be reversely pushed by the spring, so that the tail end of the vibration cylinder can knock the inner ring wall of the roll printing shaft, the roll-printed biscuits can fall off under knocking vibration, and the blanking effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of roller printing machine technology, and particularly relates to a manual roller printing machine. Background Technology

[0002] A cookie roll forming machine is a common piece of equipment that uses forming rollers with specific groove patterns to press continuous strips of dough or filled dough into cookie blanks of a specific shape. In large-scale industrial production, it is usually driven by an electric motor and has a complete power transmission, forming, demolding, and conveying system, with a high degree of automation. However, for occasions with low production demand, limited space, or a need for flexible production, such as small food workshops, start-up bakeries, teaching demonstrations, or new product formula trials, large-scale automated equipment suffers from problems such as high cost, large footprint, high energy consumption, complex operation, and insufficient flexibility. Therefore, there is a clear market demand for manual or simple roll forming machines that are simple in structure, low in cost, easy to operate, and can guarantee a certain forming quality.

[0003] Existing manual or simple roller printing equipment, in order to control costs and simplify structure, often suffers from numerous limitations in functional integration and performance optimization, primarily in the demolding process—a long-standing technical pain point for manual roller printing machines. Lacking an effective auxiliary demolding mechanism, they mainly rely on the dough's own gravity, the centrifugal force generated by the rotating forming roller, and natural separation from the mold surface. However, when processing dough with a certain degree of stickiness, high sugar content, or slightly high moisture content, the formed cookie dough easily sticks to the grooves of the roller shaft and cannot be easily removed. Operators are often forced to frequently stop the machine, resorting to manual tapping of the roller shaft, using tools to pry it open, or cleaning the mold to solve the problem. This not only severely disrupts the rhythm of continuous production but also greatly reduces work efficiency. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems of biscuit demolding in the prior art. To this end, this application proposes a manual roller printing machine.

[0005] To achieve the above objectives, the specific technical solution of the present invention is as follows: A manual roller printing machine includes a roller printing shaft, wherein the roller printing shaft is open at both ends and hollow inside, a fixing block is placed inside the roller printing shaft, and a third roller is fixed at both ends of the fixing block, and the third roller is placed at the center of the opening of the roller printing shaft. A lifting groove is provided at the bottom of the outer peripheral surface of the fixing block, and a vibrating cylinder capable of lifting and displacing is coaxially arranged inside the lifting groove.

[0006] Preferably, the end of the vibrating cylinder near the inner arc surface of the printing roller shaft is provided with a spherical structure, so that the friction between the vibrating cylinder and the printing roller shaft is reduced when the vibrating cylinder is subjected to impact vibration.

[0007] Preferably, a rotating block is fitted at the opening of the vibrating cylinder, and a spiral slide is symmetrically fixed on the outer circumference of the rotating block, wherein the spiral slide is arranged in an inclined structure, and positioning pins are symmetrically fixed on the inner and outer ring walls of the vibrating cylinder.

[0008] Preferably, the inner ring wall of the lifting groove is symmetrically provided with guide grooves, wherein one end of the positioning pin fixed on the outer ring wall of the vibrating cylinder extends to the guide groove, and a spring is fixed between the top of the vibrating cylinder and the top surface of the inner cavity of the lifting groove.

[0009] Preferably, baffles are provided at both ends of the roller printing shaft, and a side plate is fixed below the baffle. Two first rollers are respectively arranged opposite each other in the area between the two side plates, and a conveyor belt is sleeved on the first rollers.

[0010] Preferably, a fourth gear is fixed to the end of the first roller shaft, a second gear is meshed with one side of the fourth gear, a crank shaft extends from the center of the second gear toward the side plate, and a crank is fixed to the end of the crank shaft. Meanwhile, a first gear is fixed to one end of the roller shaft, and the first gear rotates through the power transmission of the second gear.

[0011] Preferably, a crown gear is fixed to the top of the rotating block, wherein the crown gear is fixedly connected to the rotating block through a second rotating shaft, a first rotating shaft extends from one end of the roller printing shaft into the third roller shaft, a fifth gear is fixed to the end of the first rotating shaft near the crown gear, the fifth gear meshes with the crown gear, and a second sprocket is fixed to the other end of the first rotating shaft.

[0012] Preferably, a first sprocket is fixed to the outer circumferential surface of the crank shaft, wherein a chain is sleeved between the first sprocket and the second sprocket, and pulleys are fixed to the outer circumferential surfaces of the two second rotating shafts respectively, and a belt is sleeved between the two pulleys.

[0013] Preferably, a fixing plate is provided on one side of the outer peripheral surface of the roller printing shaft, wherein fixing brackets extend from both ends of the fixing plate toward the baffle, and cleaning brushes are evenly distributed laterally on the surface of the fixing plate facing the outer peripheral surface of the roller printing shaft.

[0014] Preferably, the fixed plate has an oil cavity inside, which is filled with oil. The surface of the fixed plate above the cleaning brush has a spray hole, and an oil channel is formed between the spray hole and the oil cavity. A filling hole is formed on the upper side of the fixed plate towards the oil cavity. An air pump is also fixed on the upper side of the fixed plate. Oil brushes are also horizontally distributed and fixed on the surface of the fixed plate above the spray hole.

[0015] The manual roller printing machine of the present invention has the following advantages: 1. This manual roller printing machine, when the roller printing shaft needs to roll the raw material into biscuits, the crank handle drives the crank shaft. While the crank shaft is rotating, it drives the second sprocket above through the first sprocket and chain. As the second sprocket rotates, the fifth gear set at one end drives the upper crown gear, which then rotates. The rotating block can pull the positioning pin upward through the spiral slide. As the vibrating cylinder moves upward, it continuously compresses the spring. As the positioning pin passes the highest point of the spiral slide, it is pushed in the opposite direction by the spring, so that the end of the vibrating cylinder can strike the inner ring wall of the roller printing shaft. The biscuits after roller printing can fall off under the impact and vibration, improving the feeding efficiency.

[0016] 2. In this manual roller printing machine, after the roller printing shaft has finished rotating and printing, the cleaning brush can first clean the outer circumference of the roller printing shaft. During the cleaning process, the air pump continuously adds pressure to the inside of the oil chamber, and then sprays the oil inside the oil chamber out of the spray hole and sprays it onto the outer circumference of the roller printing shaft, so that the subsequent raw materials can be easily unloaded when roller printing. After the oil is sprayed, it can be further evenly coated by the oil brush. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the side plate and conveyor belt of the present invention; Figure 3 This is a front view schematic diagram of the conveyor belt structure of the present invention; Figure 4 This is a schematic diagram of the roller printing shaft structure of the present invention; Figure 5 This is a top view of the roller printing shaft structure of the present invention; Figure 6 For the purposes of this invention Figure 5 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the fixing block and the third roller shaft structure of the present invention; Figure 9 This is an exploded view of the rotating block and the fixed block of the present invention; Figure 10 This is a schematic diagram of the fixing plate structure of the present invention; Figure 11 This is a top view of the fixing plate structure of the present invention; Figure 12 For the purposes of this invention Figure 11 Schematic diagram of the CC cross-section structure.

[0019] Explanation of markings in the diagram: 1. Side plate; 11. Conveyor belt; 12. First roller shaft; 121. Fourth gear; 13. Baffle; 2. Handle; 21. Handle shaft; 211. Second gear; 22. First sprocket; 221. Chain; 3. Feed hopper; 31. Second roller shaft; 311. Third gear; 32. Feed plate; 4. Roller shaft; 41. First gear; 42. Fixing cap; 43. Third roller shaft; 431. Fixing block; 432. Lifting trough ; 433, guide groove; 5, vibrating cylinder; 51, positioning pin; 511, spring; 6, rotating block; 61, spiral slide; 62, crown gear; 63, pulley; 64, belt; 65, second rotating shaft; 7, first rotating shaft; 71, second sprocket; 72, fifth gear; 8, fixing plate; 81, fixing frame; 82, filling hole; 83, air pump; 84, cleaning brush; 85, spray hole; 86, oil brush; 87, oil chamber; 871, oil passage. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-3 As shown, the manual roller printing machine of the present invention mainly comprises two heavy-duty side plates 1 placed parallel to each other and opposite to each other. The side plates 1 are preferably made of food-grade stainless steel or high-quality steel plates treated with rust prevention to ensure the hygiene and durability of the equipment. The two side plates 1 are securely fixed together by multiple sets of high-strength bolts. The arrangement of the bolts is based on mechanical calculations to ensure that the side plates 1 will not undergo relative displacement or deformation during operation, thereby guaranteeing the precision and stability of the entire machine's operation. A stable and open internal working space is formed between the two side plates 1.

[0022] At the lower part of the frame, near the bottom of the working space, two first rollers 12 are respectively arranged opposite each other. The two ends of the first rollers 12 are rotatably supported on the side plates 1 by ball bearings (not shown separately in the diagram). A circular conveyor belt 11 is fitted onto both first rollers 12. This conveyor belt 11 is preferably made of food-grade silicone or PU material, possessing good flexibility, non-stick properties, and easy cleaning characteristics. By driving one of the first rollers 12 to rotate, the conveyor belt 11 can be driven to perform continuous planar cyclical motion. Its function is to smoothly receive and continuously transport the biscuit material formed by the upper rollers to the downstream collection area or the next processing step, achieving continuous material output.

[0023] A baffle 13 is fixedly installed on one side near the upper part of the side plate 1. The function of the baffle 13 is to prevent material from escaping from both sides during the roller printing process, ensuring that the raw material is concentrated within the effective working width. A feed hopper 3 is fixedly connected to the upper opening of the two baffles 13. The bottom opening of the feed hopper 3 extends horizontally, and its width matches the working length of the roller printing shaft 4. Raw materials such as biscuit dough can be placed in the feed hopper 3.

[0024] Located on either side of the opening below the feed hopper 3, a printing roller 4 and a second roller 31 are respectively arranged opposite each other. The printing roller 4 is the core forming component, and its outer surface is precisely carved or machined with grooves of specific shapes, such as animal shapes or geometric patterns, according to the cookie's design requirements. The second roller 31 serves as the opposing roller, and its surface is usually a smooth cylindrical surface or designed with auxiliary structures as needed. When the raw material falls from the feed hopper 3 into the gap between the two rollers, under the relative rotation and extrusion of the printing roller 4 and the second roller 31, the raw material is filled into the grooves on the surface of the printing roller 4, thereby forming a cookie blank with a specific shape on the surface of the printing roller 4.

[0025] To guide the formed cookie dough smoothly off and fall, a slanted feed plate 32 is installed directly below the gap between the roller printing shaft 4 and the second roller shaft 31. The upper edge of the feed plate 32 is close to the area below the meshing of the two shafts, while the lower edge extends above the conveyor belt 11. This ensures that the cookie can slide smoothly without damaging its shape due to an excessively steep angle.

[0026] A fourth gear 121, a first gear 41, and a third gear 311 are fixed to one end of the first roller shaft 12, the printing roller shaft 4, and the second roller shaft 31, respectively. These gears are sequentially meshed with each other. A second gear 211 is meshed with one side of the fourth gear 121. A crank shaft 21 extends from the center of the second gear 211 towards the side plate 1, and a crank 2 is fixed to the end of the crank shaft 21. Therefore, turning the crank 2 drives the second gear 211 to rotate via the crank shaft 21. As the second gear 211 rotates, it drives the fourth gear 121 meshed with it on one side. Power is then continuously transmitted to the third gear 311 and the first gear 41, allowing the printing roller shaft 4 to print biscuits while the conveyor belt 11 continuously rotates to transport the material.

[0027] like Figures 4-9 As shown, the roller printing shaft 4 is designed as a cylindrical structure with open ends and a hollow interior. A fixed block 431 extending axially is located at its internal axis. A third roller shaft 43 is fixedly connected to each end of the fixed block 431. The two third roller shafts 43 are coaxially arranged, and their axis is the theoretical rotation axis of the roller printing shaft 4. The inner end of the third roller shaft 43 is fixed to the fixed block 431, while the outer end protrudes from the center of the openings at both ends of the roller printing shaft 4. The roller printing shaft 4 is supported on these two third roller shafts 43 by high-precision bearings, such as deep groove ball bearings, allowing the roller printing shaft 4 to rotate freely relative to the fixed third roller shafts 43 and the fixed block 431. After the third roller shaft 43 protrudes from the side plate 1, it is locked in place by a fixing cap 42, thereby fixing the entire internal fixed block 431 and the third roller shaft 43 relative to the machine frame side plate 1, preventing them from rotating during machine operation.

[0028] A lifting groove 432 is excavated radially upwards from the bottom of the outer periphery of the fixed block 431. Inside the lifting groove 432, a vibrating cylinder 5, which can move up and down along the groove wall, is coaxially mounted. The main body of the vibrating cylinder 5 is cylindrical, and its outer end near the inner arc surface of the roller printing shaft 4 is designed as a spherical structure. This spherical end design has several advantages: First, it reduces the contact area with the inner wall of the roller printing shaft 4, transforming possible sliding friction into point contact, thereby significantly reducing frictional resistance; second, the spherical structure provides a more uniform stress distribution when striking the inner wall and can accommodate slight misalignment that may exist due to processing or assembly, ensuring smooth and effective striking action.

[0029] The top inner end of the vibrating cylinder 5 opens downwards, forming a receiving space. A rotating block 6, capable of relative rotation, is fitted into this opening. Two helical slides 61 are symmetrically machined and fixed on the outer circumference of the rotating block 6. Each helical slide 61 is an inclined, spiral-shaped convex rail structure, smoothly transitioning from its lowest point to its highest point, with a certain height difference between the two points. Positioning pins 51 are symmetrically fixed on the inner and outer annular walls of the vibrating cylinder 5. The positioning pin 51 located on the inner annular wall of the vibrating cylinder 5 extends inwards, its end precisely engaging with the helical slide 61 of the rotating block 6. The design ensures that, in the initial or static state, the bottom of the positioning pin 51 is slightly higher than the lowest end of the helical slide 61, so that the rotating block 6 can immediately engage with the positioning pin 51 when it rotates. The two helical slides 61 maintain a certain gap in the horizontal circumferential direction, forming a continuous "wave-shaped" guide path.

[0030] Guide grooves 433 are symmetrically formed on the inner ring wall of the lifting groove 432. One end of the positioning pin 51, which is fixed on the outer ring wall of the vibrating cylinder 5, extends into the guide groove 433. The guide groove 433 and the positioning pin 51 prevent the vibrating cylinder 5 from rotating during the lifting process. A spring 511 is fixed between the top of the vibrating cylinder 5 and the top surface of the inner cavity of the lifting groove 432. The spring 511 can be compressed and rebound as the vibrating cylinder 5 rises.

[0031] A crown gear 62 is fixed upward on the top of the rotating block 6 near the direction of the first gear 41. The crown gear 62 is fixedly connected to the rotating block 6 via a second rotating shaft 65. A first rotating shaft 7 extends into the third roller shaft 43 from one end of the fixed cap 42. A fifth gear 72 is fixed at the end of the first rotating shaft 7 near the bottom of the crown gear 62. The fifth gear 72 meshes with the crown gear 62. A second sprocket 71 is fixed at the other end of the first rotating shaft 7. A first sprocket 22 is also fixed on the outer circumference of the crank shaft 21. A chain 221 is sleeved between the first sprocket 22 and the second sprocket 71. Therefore, when the crank shaft 21 rotates, it can drive the first rotating shaft 7 to rotate together.

[0032] Two pulleys 63 are fixed to the outer circumference of the two second rotating shafts 65, and a belt 64 is sleeved between the two pulleys 63. Therefore, when the roller printing shaft 4 needs to roll the raw material into biscuits, the crank handle 2 drives the crank shaft 21. While the crank shaft 21 is rotating, it drives the upper second sprocket 71 through the first sprocket 22 and the chain 221. As the second sprocket 71 rotates, the fifth gear 72, which is set opposite to one end, drives the upper meshing crown gear 62. Then the rotating block 6 rotates. As the rotating block 6 rotates, it can pull the positioning pin 51 upward through the spiral slide 61. Then, the vibrating cylinder 5 continuously compresses the spring 511 as it moves upward. As the positioning pin 51 passes the highest point of the spiral slide 61, it can be pushed in the opposite direction by the spring 511, so that the end of the vibrating cylinder 5 can strike the inner ring wall of the roller printing shaft 4, so that the rolled biscuits can fall off under the impact and vibration, improving the feeding effect.

[0033] like Figure 2 and Figures 10-12 As shown, a fixing plate 8 is provided on one side of the outer peripheral surface of the roller printing shaft 4. Fixing brackets 81 extend from both ends of the fixing plate 8 towards the baffle 13, allowing the fixing plate 8 to be fixed in place. Cleaning brushes 84 are evenly distributed laterally on the surface of the fixing plate 8 facing the outer peripheral surface of the roller printing shaft 4. Therefore, after the roller printing shaft 4 rotates and feeds material, the outer peripheral surface of the roller printing shaft 4 is continuously rubbed and brushed by the cleaning brushes 84 during rotation, thereby cleaning the residue in the grooves of the roller printing shaft 4 and preventing deviations in subsequent roller printing.

[0034] An oil cavity 87 is provided inside the fixed plate 8, which is filled with oil. A spray hole 85 is provided on the surface of the fixed plate 8 above the cleaning brush 84. An oil channel 871 is provided between the spray hole 85 and the oil cavity 87, which allows oil to pass through and be sprayed out from the spray hole 85.

[0035] An injection hole 82 is provided on the upper side of the fixed plate 8 towards the oil cavity 87, through which oil can be injected into the oil cavity 87. An air pump 83 is also fixed on the upper side of the fixed plate 8, continuously pressurizing the oil cavity 87. Oil brushes 86 are also horizontally fixed on the surface of the fixed plate 8 above the spray hole 85. Therefore, after the roller printing shaft 4 completes its rotation and printing, the cleaning brush 84 first cleans the outer circumference of the roller printing shaft 4. During the cleaning process, the air pump 83 continuously pressurizes the oil cavity 87, subsequently spraying the oil from the spray hole 85 onto the outer circumference of the roller printing shaft 4, facilitating the subsequent unloading of raw materials during roller printing. After the oil is sprayed, the oil brushes 86 can further spread it evenly.

[0036] The working principle of a manual roller printing machine: When the roller printing shaft 4 needs to roll the raw material into biscuits, the crank handle 2 drives the crank shaft 21. While the crank shaft 21 is rotating, it drives the upper second sprocket 71 through the first sprocket 22 and the chain 221. As the second sprocket 71 rotates, the fifth gear 72, which is set at one end opposite to it, drives the upper meshing crown gear 62. Then the rotating block 6 rotates. As the rotating block 6 rotates, it can pull the positioning pin 51 upward through the spiral slide 61. Then, the vibrating cylinder 5 continuously compresses the spring 511 as it moves upward. As the positioning pin 51 passes the highest point of the spiral slide 61, it can be pushed in the opposite direction by the spring 511, so that the end of the vibrating cylinder 5 can strike the inner ring wall of the roller printing shaft 4, so that the biscuits after roller printing can fall off under the impact and vibration, improving the feeding effect. After the roller printing shaft 4 rotates and the printing is completed, the cleaning brush 84 can first clean the outer circumference of the roller printing shaft 4. During the cleaning process, the air pump 83 continuously adds pressure to the inside of the oil chamber 87, and then sprays the oil inside the oil chamber 87 out of the spray hole 85, and then sprays it onto the outer circumference of the roller printing shaft 4, so that the subsequent raw materials can be easily unloaded when roller printing. After the oil is sprayed, it can be further evenly coated by the oil brush 86.

[0037] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A hand roller printing machine comprising a roller printing shaft (4), wherein the roller printing shaft (4) is open at both ends and hollow inside, characterized in that: The fixed block (431) is arranged in the interior of the roller printing shaft (4), and the third roller shaft (43) is fixed at both ends of the fixed block (431) and arranged in the opening center of the roller printing shaft (4), and the lifting groove (432) is arranged on the outer circumferential surface of the fixed block (431) and upwardly opened, and the vibration cylinder (5) capable of lifting displacement is coaxially arranged in the interior of the lifting groove (432).

2. The hand roller printing machine of claim 1, wherein: The end of the vibration cylinder (5) close to the arc surface of the interior of the roller printing shaft (4) is arranged in a spherical structure, so that the friction between the vibration cylinder (5) and the roller printing shaft (4) is reduced when the vibration cylinder (5) is impacted and vibrated.

3. The hand roller printing machine of claim 2, wherein: The rotating block (6) is sleeved on the opening of the vibration cylinder (5), the helical slide (61) is symmetrically fixed on the outer circumferential surface of the rotating block (6), the helical slide (61) is arranged in an inclined structure, and the positioning pin (51) is symmetrically fixed on the inner and outer annular walls of the vibration cylinder (5).

4. The hand roller according to claim 3, wherein: The inner annular wall of the lifting groove (432) is symmetrically provided with the guide groove (433), one end of the positioning pin (51) fixed on the outer annular wall of the vibration cylinder (5) extends to the guide groove (433), and the spring (511) is fixed between the top of the vibration cylinder (5) and the top surface of the interior of the lifting groove (432).

5. The hand roller printing press of claim 4, wherein: The baffle (13) is arranged at both ends of the roller printing shaft (4) in opposite directions, the side plate (1) is fixed below the baffle (13), two first roller shafts (12) are arranged in the region between the two side plates (1) in opposite directions, and the conveying belt (11) is sleeved on the first roller shaft (12).

6. The hand roller printing machine of claim 5, wherein: The fourth gear (121) is fixed on the end of the first roller shaft (12), the second gear (211) is engagedly connected to one side of the fourth gear (121), the handle shaft (21) extends from the center of the second gear (211) to the side plate (1), the handle (2) is fixed on the end of the handle shaft (21), the first gear (41) is fixed on one end of the roller printing shaft (4), and the first gear (41) rotates through power transmission of the second gear (211).

7. The hand roller printing press of claim 6, wherein: The crown gear (62) is fixed on the top of the rotating block (6), the crown gear (62) and the rotating block (6) are fixedly connected through the second rotating shaft (65), the first rotating shaft (7) extends into the third roller shaft (43) from one end of the roller printing shaft (4), the fifth gear (72) is fixed on the end of the first rotating shaft (7) close to the lower side of the crown gear (62), the fifth gear (72) is engagedly connected with the crown gear (62), and the second sprocket (71) is fixed on the other end of the first rotating shaft (7).

8. The hand roller printing press of claim 7, wherein: The first sprocket (22) is further fixed on the outer circumferential surface of the handle shaft (21), the chain (221) is sleeved between the first sprocket (22) and the second sprocket (71), the belt pulley (63) is fixed on the outer circumferential surface of the two second rotating shafts (65), and the belt (64) is sleeved between the two belt pulleys (63).

9. The hand roller printing press of claim 8, wherein: The outer peripheral surface side of the roller printing shaft (4) is oppositely provided with a fixed plate (8), wherein the two ends of the fixed plate (8) extend in the direction of the baffle (13) and are provided with a fixed frame (81), and the surface of the fixed plate (8) on the outer peripheral surface side of the roller printing shaft (4) is uniformly distributed with cleaning brushes (84) in the transverse direction.

10. The hand roller printing press of claim 9, wherein: The inside of the fixed plate (8) is provided with an oil cavity (87), the inside of the oil cavity (87) is filled with oil, the surface of the fixed plate (8) above the cleaning brushes (84) is provided with a spray hole (85), wherein the spray hole (85) and the oil cavity (87) are provided with an oil channel (871), the side above the fixed plate (8) is provided with an oil filling hole (82) in the direction of the oil cavity (87), and the side above the fixed plate (8) is further provided with an air pump (83), and the surface of the fixed plate (8) above the spray hole (85) is further provided with an oil brush (86) distributed in the transverse direction.

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