A belt printing machine

Abstract

The present invention provides a belt printing machine, belonging to the technical field of printing equipment, comprising a frame and an unwinding mechanism, a printing mechanism, a heat drying mechanism, and a winding mechanism arranged on the frame, wherein the unwinding mechanism, the printing mechanism, the heat drying mechanism, and the winding mechanism are arranged in sequence along a process assembly line; the printing mechanism comprises a first side plate and a second side plate arranged opposite to each other, a plate roller assembly and an impression roller are arranged between the first side plate and the second side plate, an ink cartridge is arranged below the plate roller assembly, a scraper is arranged on one side of the plate roller assembly, the plate roller assembly comprises a gravure roller, a concave portion is arranged on the surface of the gravure roller, the gravure roller is driven by a driving assembly arranged on the first side plate, the bottom of the gravure roller sinks into the ink cartridge, a gap is formed between the top of the gravure roller and the impression roller for a substrate to pass through, and one side of the gravure roller is in close contact with the scraper.

Description

Technical Field

[0001] The invention relates to the technical field of printing equipment, in particular to a belt printing machine. Background Art

[0002] Modern printing presses are generally composed of mechanisms such as plate loading, inking, embossing, and paper feeding. The working principle is roughly as follows: the pattern to be printed is made into a printing plate, which is mounted on the printing plate roller or the printing plate carrying track of the printing press, and then the ink is applied to the patterned area on the printing plate manually or by a printing press, and then directly or indirectly transferred to the substrate, thereby replicating a printed product with the same pattern as the printing plate.

[0003] For example, there is a Chinese patent document with application number 2024111568267, which disclosed such a belt printing press on October 15, 2024, which mainly includes a coil conveying assembly for conveying coils and a printing mechanism for printing the coils. Like the printing plates of most current printing presses, the printing plate of this belt printing press is a relief plate. This means that the printing plate composed of concave and convex parts, during the cycle of rotation of the plate roller, after contacting the ink in the ink cartridge, the convex part of the printing plate transfers the adhered ink to the substrate. In this process, it is inevitable that the concave part of the printing plate will also be stained with ink, and this part of the ink affects the printing quality during the plate transfer process. Summary of the invention

[0004] The present invention aims to solve the above-mentioned technical problems and provides a belt printing machine.

[0005] The technical solution of the present invention is a belt printing machine, comprising a frame and an unwinding mechanism, a printing mechanism, a heat drying mechanism, and a rewinding mechanism arranged on the frame, wherein the unwinding mechanism, the printing mechanism, the heat drying mechanism, and the rewinding mechanism are arranged in sequence along a process line;

[0006] The printing mechanism includes a first side plate and a second side plate which are arranged opposite to each other, a plate roller assembly and an impression roller are arranged between the first side plate and the second side plate, an ink cartridge is arranged below the plate roller assembly, a scraper is arranged on one side of the plate roller assembly, the plate roller assembly includes a gravure roller, a concave portion is arranged on the surface of the gravure roller, the gravure roller is driven by a driving assembly arranged on the first side plate, the bottom of the gravure roller is sunk into the ink cartridge, a gap is formed between the top of the gravure roller and the impression roller for the printing material to pass through, and one side of the gravure roller is in close contact with the scraper.

[0007] As an embodiment, the printing plate roller assembly also includes a flexible layer with a circular cross-section, the gravure roller is a hollow structure, the flexible layer is attached to the inner wall of the gravure roller, the concave portion penetrates the side wall of the gravure roller and is connected to the outer surface of the flexible layer, the second side plate is provided with a pressure plate extending into the interior of the gravure roller, the end of the pressure plate points to the axis of the embossing roller, and the inner surface of the flexible layer is concave, and the second side plate is also provided with four outer rollers and one inner roller extending into the interior of the gravure roller The outer surfaces of the four outer rollers are tangent to the inner surface of the flexible layer and are evenly distributed along the circumferential direction of the flexible layer. The inner roller is closer to the axis of the gravure roller than the outer rollers and is located between the embossing roller and the ink cartridge. An adhesive layer is wound around the outer roller and the inner roller. The adhesive layer is bonded to the inner surfaces of the four outer rollers and the flexible layer, and a separation zone is formed between the inner roller and the inner surface of the flexible layer.

[0008] As an embodiment, the driving assembly includes a driving shaft passing through the first side plate, the driving shaft is connected to the second side plate, and a side sealing plate is provided in the opening of the gravure roller close to the first side plate, and the side sealing plate is fixedly connected to the gravure roller and the driving shaft.

[0009] As an embodiment, the driving assembly further includes a motor bracket arranged on the first side plate and a servo motor arranged on the motor bracket, and the servo motor is connected to the driving shaft via a coupling.

[0010] As an embodiment, the drive assembly further includes a machine cover covering the outside of the servo motor.

[0011] As an embodiment, a plate seat is further provided on the second side plate, the plate seat is for the drive shaft to pass through and is connected to the drive shaft through a bearing, the cross-section of the pressure plate is teardrop-shaped, the base of the pressure plate is hollow and for the drive shaft to pass through, and the pressure plate and the drive shaft are connected through a bearing.

[0012] As an implementation manner, a glue injection device is further provided on the second side plate, and a glue injection tube is connected to the glue injection device and penetrates into the interior of the gravure roller, and the glue injection tube is located in the separation area.

[0013] As an embodiment, the unwinding mechanism includes a support rod fixed on the first side plate, the support rod is provided with a support shaft, the support shaft is located above the side of the printing roller, and the support shaft is rotatably connected to an unwinding roller for winding the substrate.

[0014] As an embodiment, a flat plate is provided on the frame, a guide edge is provided at one end of the flat plate close to the plate roller assembly, a bidirectional scale and two movable long openings are provided on the flat plate, the length directions of the two movable long openings are perpendicular to the direction of the process line, a positioning block is provided in each of the two movable long openings, the positioning block corresponds to the bidirectional scale, and printed matter passes between the two positioning blocks, a sliding rod is also provided on the first side panel above the positioning block, a color mark sensor is slidably connected to the sliding rod, and the color mark sensor is used to detect printed matter passing between the two positioning blocks.

[0015] As an embodiment, a slide rail is also provided on the first side panel, and the sliding direction of the slide rail is along the direction of the process line. A lower slide block is slidably connected to the slide rail, and a first positioning member is provided on the lower slide block. The first positioning member is used to fix the relative position of the lower slide block and the slide rail. A straight rod is provided on the lower slide block, and the slide block is provided on the straight rod. The sliding direction of the slide block is perpendicular to the direction of the process line. An upper slide block is slidably connected to the slide block, and the color mark sensor is fixed on the upper slide block. A second positioning member is provided on the upper slide block, and the second positioning member is used to fix the relative position of the upper slide block and the slide block.

[0016] Compared with the prior art, the present invention has the beneficial effect that the belt printing machine changes the traditional relief roller and gravure roller. The belt printing machine allows the concave part to penetrate the side wall of the gravure roller and connect the outer surface of the flexible layer. After the gravure roller rotates and sticks ink from the ink cartridge, as the concave part of the gravure roller turns to the position of the embossing roller, the pressing plate acts on the other side of the concave part of the gravure roller to squeeze the flexible layer part into the concave part, so that the ink in the concave part is fully printed on the substrate. As the concave part of the gravure roller turns to the position indicated by the pressing plate, under the action of the outer roller and the inner roller, the adhesive layer and the flexible layer are separated in the separation area. Since the adhesive layer is self-adhesive, the separation process can take out the part of the flexible layer squeezed into the concave part, so that the gravure roller can be stuck with enough ink after rotating into the ink cartridge. Therefore, the belt printing machine breaks through the traditional gravure printing principle. Compared with traditional relief printing or gravure printing, it has better printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a belt printing machine provided in an embodiment of the present invention;

[0018] Figure 2 A first structural schematic diagram of a printing mechanism provided in an embodiment of the present invention;

[0019] Figure 3 A second structural schematic diagram of a printing mechanism provided in an embodiment of the present invention;

[0020] Figure 4 A partial cross-sectional view of a printing mechanism provided in an embodiment of the present invention;

[0021] Figure 5 Reason Figure 4 The enlarged partial view shown in FIG.

[0022] Figure 6 A third structural schematic diagram of a printing mechanism provided in an embodiment of the present invention;

[0023] Figure 7 This is a fourth structural schematic diagram of the printing mechanism provided in an embodiment of the present invention.

[0024] In the figure: 1, frame; 2, unwinding mechanism; 3, printing mechanism; 4, hot drying mechanism; 5, winding mechanism; 6, first side plate; 7, second side plate; 8, plate roller assembly; 9, impression roller; 10, ink cartridge; 11, scraper; 12, gravure roller; 13, concave portion; 14, driving assembly; 15, flexible layer; 16, pressing plate; 17, outer roller; 18, inner roller; 19, bonding layer; 20, release zone; 21, driving shaft; 22, side sealing plate; 23, motor Bracket; 24, servo motor; 25, coupling; 26, machine cover; 27, plate seat; 28, glue injection device; 29, glue injection tube; 30, support rod; 31, support shaft; 32, unwinding roller; 33, flat plate; 34, guide edge; 35, two-way scale; 36, movable long mouth; 37, positioning block; 38, slide bar; 39, color mark sensor; 40, slide rail; 41, lower slide block; 42, first positioning piece; 43, straight rod; 44, upper slide block; 45, second positioning piece. DETAILED DESCRIPTION

[0025] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0026] In one embodiment, if Figures 1 to 7 shown.

[0027] The belt printing machine provided in this embodiment includes a frame 1 and an unwinding mechanism 2, a printing mechanism 3, a heat drying mechanism 4, and a rewinding mechanism 5 arranged on the frame 1. The unwinding mechanism 2, the printing mechanism 3, the heat drying mechanism 4, and the rewinding mechanism 5 are arranged in sequence along the process line; the printing mechanism 3 includes a first side plate 6 and a second side plate 7 arranged opposite to each other, a plate roller assembly 8 and a pressing roller 9 are arranged between the first side plate 6 and the second side plate 7, an ink cartridge 10 is arranged below the plate roller assembly 8, and the plate roller assembly 8 is provided with a plurality of ink cartridges 10. A scraper 11 is provided on one side of the plate roller assembly 8, the plate roller assembly 8 includes a gravure roller 12, a concave portion 13 is provided on the surface of the gravure roller 12, the gravure roller 12 is driven by a driving assembly 14 provided on the first side plate 6, the bottom of the gravure roller 12 is sunk into the ink cartridge 10, a gap is formed between the top of the gravure roller 12 and the impression roller 9 for the substrate to pass through, and one side of the gravure roller 12 is in close contact with the scraper 11; the plate roller assembly 8 also includes a flexible layer 15 with a circular cross-section, the gravure roller 12 The second side plate 7 is provided with a pressing plate 16 extending into the interior of the gravure roller 12, and the end of the pressing plate 16 points to the axis of the embossing roller 9, and makes the inner surface of the flexible layer 15 concave. The second side plate 7 is also provided with four outer rollers 17 and one inner roller 18 extending into the interior of the gravure roller 12, and the outer surfaces of the four outer rollers 17 are all in contact with the flexible layer 15. The inner surfaces of the four outer rollers 17 and the flexible layer 15 are tangent and evenly distributed along the circumferential direction of the flexible layer 15. The inner roller 18 is closer to the axis of the gravure roller 12 than the outer roller 17 and is located between the embossing roller 9 and the ink cartridge 10. An adhesive layer 19 is wound around the outer roller 17 and the inner roller 18. The adhesive layer 19 is bonded to the inner surfaces of the flexible layer 15 through the four outer rollers 17, and a separation area 20 located between the embossing roller 9 and the ink cartridge 10 is formed between the inner roller 18 and the inner surface of the flexible layer 15.

[0028] In the present embodiment, the unwinding mechanism 2 of the belt printing press is used for placing the substrate. Driven by the driving assembly 14, the substrate passes through the printing mechanism 3 and the heat drying mechanism 4, and is finally collected in the rewinding mechanism 5. In the present embodiment, the belt printing press changes the traditional relief roller and the gravure roller. As is known to all, the traditional relief roller transfers the ink adhered to the substrate by the convex part of the printing plate. In this process, it is inevitable that the concave part of the printing plate will also be adhered to the ink, and this part of the ink affects the printing quality during the printing plate transfer process. The traditional gravure roller transfers the ink adhered to the substrate by the concave part of the printing plate. In this process, it is inevitable that the concave part of the printing plate will not be filled with ink, and the pattern printed during the printing plate transfer process is prone to belt breakage. For this reason, the belt printing press in the present embodiment allows the concave part 13 to penetrate the side wall of the gravure roller 12 and connect to the outer surface of the flexible layer 15, such as Figure 5As shown. After the gravure roller 12 rotates and picks up ink from the ink cartridge 10, as the concave portion 13 of the gravure roller 12 turns to the position of contacting the embossing roller 9, the pressing plate 16 acts on the other side of the concave portion 13 of the gravure roller 12, partially squeezing the flexible layer 15 into the concave portion 13, thereby fully printing the ink in the concave portion 13 on the substrate. Because the end of the pressing plate 16 points to the axis of the embossing roller 9, the effective length of the pressing plate 16 is greater than the inner radius of the flexible layer 15, so that the part of the flexible layer 15 that contacts the pressing plate 16 appears as shown. Figure 5 As the concave portion 13 of the gravure roller 12 rotates past the position indicated by the pressure plate 16, the adhesive layer 19 and the flexible layer 15 are separated in the separation area 20 under the action of the outer roller 17 and the inner roller 18. Since the adhesive layer 19 is self-adhesive, the separation process can bring out part of the flexible layer 15 squeezed into the concave portion 13, so that the gravure roller 12 can be adhered to enough ink after rotating into the ink cartridge 10. Therefore, the gravure roller 12 of the belt printing machine in this embodiment seems to be closer to traditional gravure printing, but in fact the principle of transfer breaks through the traditional gravure printing principle. Compared with traditional letterpress printing or gravure printing, it has better printing quality.

[0029] In one embodiment, if Figure 3 shown.

[0030] The belt printing machine provided in this embodiment has a driving assembly 14 including a driving shaft 21 passing through the first side plate 6, the driving shaft 21 is connected to the second side plate 7, and a side sealing plate 22 is provided in the opening of the gravure roller 12 close to the first side plate 6, and the side sealing plate 22 is fixedly connected to the gravure roller 12 and the driving shaft 21.

[0031] In this embodiment, the driving shaft 21 of the driving assembly 14 is connected to the side sealing plate 22, and the side sealing plate 22 is connected to the gravure roller 12. Correspondingly, the other side of the gravure roller 12 is open. The other side of the gravure roller 12 is open for the pressure plate 16, the outer roller 17, and the inner roller 18 to extend into.

[0032] In one embodiment, if Figure 3 shown.

[0033] The belt printing machine provided in this embodiment has a driving assembly 14 which further includes a motor bracket 23 disposed on the first side plate 6 and a servo motor 24 disposed on the motor bracket 23 . The servo motor 24 is connected to the driving shaft 21 via a coupling 25 .

[0034] In this embodiment, a motor bracket 23 is provided on the first side plate 6, and the motor bracket 23 is used to install a servo motor 24, and the servo motor 24 is connected to the drive shaft 21 through a coupling 25. In addition, a hood 26 is provided outside the servo motor 24 to protect this part of the connection structure.

[0035] In one embodiment, if Figure 2 shown.

[0036] The belt printing machine provided in this embodiment is further provided with a plate seat 27 on the second side plate 7, the plate seat 27 is for the drive shaft 21 to pass through and is connected to the drive shaft 21 through a bearing, the cross-section of the pressure plate 16 is teardrop-shaped, the base of the pressure plate 16 is hollow and for the drive shaft 21 to pass through, and the pressure plate 16 and the drive shaft 21 are connected through a bearing.

[0037] In this embodiment, a plate seat 27 is provided on the second side plate 7, and the plate seat 27 is connected and fixed to the pressing plate 16, and the driving shaft 21 is also passed through the plate seat 27, and the plate seat 27 is rotatably connected to the driving shaft 21. Therefore, the driving shaft 21 is connected to both the first side plate 6 and the second side plate 7, and has high stability. The cross section of the pressing plate 16 is in a teardrop shape, and the base of the pressing plate 16 is hollow and passed through by the driving shaft 21. The base of the pressing plate 16 refers to the portion corresponding to the end of the pressing plate 16, and the pressing plate 16 is stably abutted against the flexible layer 15 with the help of the driving shaft 21.

[0038] In one embodiment, if Figure 5 shown.

[0039] The belt printing machine provided in this embodiment is further provided with a glue injection device 28 on the second side plate 7 , and the glue injection device 28 is connected with a glue injection tube 29 which penetrates into the gravure roller 12 , and the glue injection tube 29 is located in the separation area 20 .

[0040] In this embodiment, the adhesive layer 19 and the flexible layer 15 are bonded together. As the use time increases, the viscosity of the adhesive layer 19 will weaken. Therefore, a glue injection device 28 and a glue injection tube 29 are provided to regularly fill the adhesive layer 19 with glue, and these are arranged in the separation area 20.

[0041] In one embodiment, if Figure 2 shown.

[0042] The belt printing machine provided in this embodiment has an unwinding mechanism 2 including a support rod 30 fixed on the first side plate 6, a support shaft 31 is provided on the support rod 30, the support shaft 31 is located above the side of the impression roller 9, and an unwinding roller 32 is rotatably connected to the support shaft 31 for winding the substrate.

[0043] In this embodiment, the support shaft 31 is supported on the upper side of the impression roller 9 by the support rod 30, and the unwinding roller 32 on the support shaft 31 is used for winding the substrate, so the belt printing machine unwinds the substrate in the form of a belt from top to bottom.

[0044] In one embodiment, if Figure 6 shown.

[0045] The belt printing machine provided in this embodiment has a flat plate 33 on its frame 1, and a guide edge 34 is provided on one end of the flat plate 33 close to the plate roller assembly 8. A bidirectional scale 35 and two movable long openings 36 are provided on the flat plate 33. The length direction of the two movable long openings 36 is perpendicular to the direction of the process line. A positioning block 37 is respectively provided in the two movable long openings 36. The positioning block 37 corresponds to the bidirectional scale 35. Printed materials pass between the two positioning blocks 37. A sliding rod 38 located above the positioning block 37 is further provided on the first side plate 6. A color mark sensor 39 is slidably connected to the sliding rod 38. The color mark sensor 39 is used to detect printed materials passing between the two positioning blocks 37.

[0046] In this embodiment, the flat plate 33 of the belt printer is a work surface, and the guide edge 34 connected to the flat plate 33 is used to provide a guide for the substrate. A bidirectional scale 35 and two movable long openings 36 are also provided on the flat plate 33. The two marking directions of the bidirectional scale 35 correspond to the two movable long openings 36 respectively. A positioning block 37 is provided in each of the two movable long openings 36, and the two positioning blocks 37 also correspond to the bidirectional scale 35. The color mark sensor 39 on the slide bar 38 is adjusted by the position displayed by the positioning block 37 on the bidirectional scale 35. The color mark sensor 39 is used to detect the printed matter passing between the two positioning blocks 37.

[0047] In one embodiment, if Figure 6 shown.

[0048] The belt printing machine provided in this embodiment further has a slide rail 40 on its first side plate 6, the sliding direction of the slide rail 40 is along the direction of the process line, a lower slider 41 is slidably connected to the slide rail 40, the lower slider 41 is provided with a first positioning member 42, the first positioning member 42 is used to fix the relative position of the lower slider 41 and the slide rail 40, a straight rod 43 is provided on the lower slider 41, the slide bar 38 is provided on the straight rod 43, the sliding direction of the slide bar 38 is perpendicular to the direction of the process line, an upper slider 44 is slidably connected to the slide bar 38, the color mark sensor 39 is fixed on the upper slider 44, the upper slider 44 is provided with a second positioning member 45, the second positioning member 45 is used to fix the relative position of the upper slider 44 and the slide bar 38.

[0049] In this embodiment, an embodiment capable of adjusting the position of the color mark sensor 39 is provided, and a slide rail 40 is provided on the first side plate 6, and the lower slider 41 can move along the slide rail 40. Thus, the straight rod 43 and the slide bar 38 move with the lower slider 41. The upper slider 44 can also move along the slide bar 38, thereby realizing a two-dimensional adjustment of the position of the color mark sensor 39. The first positioning member 42 and the second positioning member 45 both play a role in fixing the position.

[0050] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A belt printing machine, characterized in that: The invention comprises a frame (1) and an unwinding mechanism (2), a printing mechanism (3), a heat drying mechanism (4), and a rewinding mechanism (5) arranged on the frame (1), wherein the unwinding mechanism (2), the printing mechanism (3), the heat drying mechanism (4), and the rewinding mechanism (5) are arranged in sequence along a process line; The printing mechanism (3) comprises a first side plate (6) and a second side plate (7) which are arranged opposite to each other, a plate roller assembly (8) and an impression roller (9) are arranged between the first side plate (6) and the second side plate (7), an ink cartridge (10) is arranged below the plate roller assembly (8), a scraper (11) is arranged on one side of the plate roller assembly (8), the plate roller assembly (8) comprises a gravure roller (12), a concave portion (13) is arranged on the surface of the gravure roller (12), the gravure roller (12) is driven by a driving assembly (14) arranged on the first side plate (6), the bottom of the gravure roller (12) is sunk into the ink cartridge (10), a gap is formed between the top of the gravure roller (12) and the impression roller (9) for the substrate to pass through, and one side of the gravure roller (12) is in close contact with the scraper (11); The printing plate roller assembly (8) also includes a flexible layer (15) with a circular cross-section. The gravure roller (12) is a hollow structure. The flexible layer (15) is attached to the inner wall of the gravure roller (12). The concave portion (13) penetrates the side wall of the gravure roller (12) and is connected to the outer surface of the flexible layer (15). The second side plate (7) is provided with a pressure plate (16) extending into the interior of the gravure roller (12). The end of the pressure plate (16) points to the axis of the embossing roller (9) and makes the inner surface of the flexible layer (15) concave. The second side plate (7) is also provided with four outer rollers (17) and one inner roller (18) extending into the interior of the gravure roller (12). The outer surfaces of the rollers (17) are tangent to the inner surfaces of the flexible layer (15) and are evenly distributed along the circumferential direction of the flexible layer (15); the inner roller (18) is closer to the axis of the gravure roller (12) than the outer roller (17) and is located between the embossing roller (9) and the ink cartridge (10); an adhesive layer (19) is wound around the outer roller (17) and the inner roller (18); the adhesive layer (19) is bonded to the inner surfaces of the four outer rollers (17) and the flexible layer (15), and a separation zone (20) is formed between the embossing roller (9) and the ink cartridge (10) through the inner surface of the inner roller (18) and the flexible layer (15).

2. The belt printing machine according to claim 1, characterized in that: The driving assembly (14) comprises a driving shaft (21) penetrating the first side plate (6), the driving shaft (21) being connected to the second side plate (7), and a side sealing plate (22) being provided in an opening of the gravure roller (12) close to the first side plate (6), the side sealing plate (22) being fixedly connected to the gravure roller (12) and the driving shaft (21).

3. The belt printing machine according to claim 2, characterized in that: The driving assembly (14) further comprises a motor bracket (23) arranged on the first side plate (6) and a servo motor (24) arranged on the motor bracket (23); the servo motor (24) is connected to the driving shaft (21) via a coupling (25).

4. The belt printing machine according to claim 3, characterized in that: The drive assembly (14) further includes a hood (26) covering the outside of the servo motor (24).

5. The belt printing machine according to claim 2, characterized in that: The second side plate (7) is also provided with a plate seat (27), the plate seat (27) is for the drive shaft (21) to pass through and is connected to the drive shaft (21) via a bearing, the cross-section of the pressure plate (16) is teardrop-shaped, the base of the pressure plate (16) is hollow and for the drive shaft (21) to pass through, and the pressure plate (16) and the drive shaft (21) are connected via a bearing.

6. The belt printing machine according to claim 1, characterized in that: The second side plate (7) is also provided with a glue injection device (28), the glue injection device (28) is connected with a glue injection tube (29) which penetrates into the interior of the gravure roller (12), and the glue injection tube (29) is located in the separation zone (20).

7. The belt printing machine according to claim 1, characterized in that: The unwinding mechanism (2) comprises a support rod (30) fixed on the first side plate (6), a support shaft (31) being provided on the support rod (30), the support shaft (31) being located on the upper side of the embossing roller (9), an unwinding roller (32) being rotatably connected to the support shaft (31), and the unwinding roller (32) being used for winding the printed material.

8. The belt printing machine according to claim 1, characterized in that: The frame (1) is provided with a flat plate (33), and a guide edge (34) is provided at one end of the flat plate (33) close to the plate roller assembly (8). The flat plate (33) is provided with a bidirectional scale (35) and two movable long openings (36). The length direction of the two movable long openings (36) is perpendicular to the direction of the process flow line. A positioning block (37) is respectively provided in the two movable long openings (36). The positioning block (37) corresponds to the bidirectional scale (35). Printed matter passes between the two positioning blocks (37). The first side plate (6) is also provided with a sliding rod (38) located above the positioning block (37). A color mark sensor (39) is slidably connected to the sliding rod (38). The color mark sensor (39) is used to detect printed matter passing between the two positioning blocks (37).

9. The belt printing machine according to claim 8, characterized in that: The first side plate (6) is also provided with a slide rail (40), the sliding direction of the slide rail (40) is along the direction of the process flow line, the slide rail (40) is slidably connected with a lower slider (41), the lower slider (41) is provided with a first positioning member (42), the first positioning member (42) is used to fix the relative position of the lower slider (41) and the slide rail (40), the lower slider (41) is provided with a straight rod (43), the slide rod (38) is arranged on the straight rod (43), the sliding direction of the slide rod (38) is perpendicular to the direction of the process flow line, the slide rod (38) is slidably connected with an upper slider (44), the color mark sensor (39) is fixed on the upper slider (44), the upper slider (44) is provided with a second positioning member (45), the second positioning member (45) is used to fix the relative position of the upper slider (44) and the slide rod (38).

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