A double-sided and two-color inkjet coding device

Abstract

The present invention relates to the technical field of inkjet coding equipment, and specifically relates to a double-sided and two-color inkjet coding equipment, which includes a frame, a first inkjet coding structure, a second inkjet coding structure and a drying channel. A front mounting plate and a rear mounting plate are fixedly connected to the frame. A lower guiding roller and an upper guiding roller are rotatably installed between the front mounting plate and the rear mounting plate, and the film to be inkjet coded is conveyed from the lower guiding roller to the upper guiding roller. A first transmission structure and a second transmission structure are installed between the front mounting plate and the rear mounting plate, and the first inkjet coding structure is installed on the first transmission structure; the first inkjet coding structure and the second inkjet coding structure are driven by the first transmission structure and the second transmission structure, and through the settings of a primary synchronous sprocket, a secondary synchronous sprocket and a transmission chain, a single driving structure is used to synchronously drive the first inkjet coding structure and the second inkjet coding structure, thereby effectively optimizing the driving structure of the device and facilitating the circuit control of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of inkjet coding equipment, and specifically to a double-sided and two-color inkjet coding equipment. Background Technique

[0002] An inkjet printer is a machine used to spray print characters (such as production date, shelf life, batch number, etc.), icons, specifications, barcodes, anti-counterfeiting marks, etc. on the surface of products. Its advantages are that it does not contact the product, the printed content is flexibly variable, the character size can be adjusted, and it can be connected to a computer for complex database printing;

[0003] The existing Chinese patent document with the publication number CN216330964U discloses a PC film inkjet coding device and a PC film processing equipment. Its solution includes: an inkjet mechanism, arranged above the PC film; it includes an inkjet frame and several inkjet head mechanisms; the inkjet frame is horizontally arranged above the PC film, and the inkjet head mechanism is movably arranged on the inkjet frame; the inkjet head mechanism includes an inkjet head and a lifting knob; the inkjet head is detachably arranged on the inkjet head mechanism; the lifting knob is connected to the inkjet head and is used to adjust the height position of the inkjet head; an inkjet main control device, including an inkjet control cabinet, is signal-connected to the inkjet mechanism; an ink curing mechanism, arranged above the PC film and behind the inkjet mechanism; the ink curing mechanism includes several UV lamp mechanisms, the number of UV lamp mechanisms matches the number of inkjet head mechanisms, and the positions of the UV lamp mechanisms and the inkjet head mechanisms correspond one by one;

[0004] However, the inkjet coding equipment in the above solution is not convenient for synchronously coding both sides of the structure, resulting in a low inkjet coding processing efficiency of the equipment. Moreover, the traditional inkjet coding equipment has many installation structures for disassembly and assembly, resulting in more time-consuming for its maintenance and repair. Therefore, the present invention proposes a double-sided and two-color inkjet coding equipment to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-sided and two-color inkjet coding equipment to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A double-sided and two-color inkjet coding equipment, including:

[0007] A frame, on which a front mounting plate and a rear mounting plate are fixedly connected. A lower guiding roller and an upper guiding roller are rotatably installed between the front mounting plate and the rear mounting plate, and the film to be inkjet coded is conveyed from the lower guiding roller to the upper guiding roller. A first transmission structure and a second transmission structure are installed between the front mounting plate and the rear mounting plate;

[0008] The first inkjet coding structure, the first inkjet coding structure is installed on the first transmission structure, and the first inkjet coding structure is driven by the first transmission structure;

[0009] The second inkjet coding structure, the second inkjet coding structure is installed on the second transmission structure, and the second inkjet coding structure is driven by the second transmission structure;

[0010] The drying channel, the drying channel is installed between the front mounting plate and the rear mounting plate, and the film after inkjet coding passes through the drying channel.

[0011] Preferably, the first transmission structure includes a guide rod and a transmission lead screw. The base of the first inkjet coding structure is movably installed on the guide rod, and the base of the first inkjet coding structure is driven by the transmission lead screw. The second transmission structure has the same structure as the first transmission structure. The movement mode of the second inkjet coding structure is the same as that of the first inkjet coding structure. A servo motor is fixedly installed on the rear mounting plate through a motor bracket. One end of the transmission lead screw on the second transmission structure is in transmission connection with the output shaft of the servo motor. One end of the transmission lead screw on the first transmission structure is fixedly installed with a first-stage synchronous sprocket. One end of the transmission lead screw on the second transmission structure is fixedly installed with a second-stage synchronous sprocket. The first-stage synchronous sprocket and the second-stage synchronous sprocket have the same model, and the first-stage synchronous sprocket and the second-stage synchronous sprocket are in transmission connection through a transmission chain.

[0012] Preferably, a first-stage bearing hole and a first-stage mounting hole are provided on the front mounting plate. A second-stage bearing hole and a second-stage mounting hole are provided on the rear mounting plate. The guide rod is fixed between the front mounting plate and the rear mounting plate. A first-stage bearing and a second-stage bearing are respectively fixedly installed in the first-stage bearing hole and the second-stage bearing hole. The transmission lead screw is rotatably installed between the front mounting plate and the rear mounting plate through the first-stage bearing and the second-stage bearing.

[0013] Preferably, a positioning shaft hole is provided on the transmission lead screw. An activity hole is provided on the side wall of the end of the transmission lead screw. There are three activity holes, and the three activity holes are respectively corresponding to the first-stage synchronous sprocket, the first-stage bearing, and the second-stage bearing. A first-stage threaded hole is provided on the bottom surface of the activity hole. A threaded seat is screwed in the first-stage threaded hole. A regular hexagon through hole is provided on the threaded seat. A force-bearing rod is movably installed in the regular hexagon through hole. The cross-sectional dimension of the force-bearing rod matches the dimension of the regular hexagon through hole, and the inner end of the force-bearing rod is hemispherical. A force-bearing seat is integrally formed at the outer end of the force-bearing rod. The force-bearing seat is movably arranged in the activity hole, and the outer end of the force-bearing seat is hemispherical. A wrench groove is provided on the outer end face of the force-bearing seat. A return spring is sleeved on the force-bearing rod. The two ends of the return spring are fixedly glued to the threaded seat and the force-bearing seat respectively.

[0014] Preferably, positioning grooves are formed on the inner hole side walls of the first-stage synchronous sprocket, the first-stage bearing, and the second-stage bearing. The positioning grooves are hemispherical notches, and the sizes of the positioning grooves match the sizes of the outer ends of the force-receiving seats. When the return spring is in the reset state, the outer ends of the force-receiving seats are embedded in the positioning grooves. When the force-receiving seats are pushed inward by force, the force-receiving seats are completely disengaged from the positioning grooves. A positioning shaft is fixedly installed in the positioning shaft hole.

[0015] Preferably, when the inner end of the force-receiving rod abuts against the side wall of the positioning shaft, the outer ends of the force-receiving seats are completely embedded in the positioning grooves. The inner end of the positioning shaft is tapered.

[0016] Preferably, engaging grooves are formed at the edge positions of the inner ends of the second-stage bearing holes. Engaging protrusions are integrally formed on the outer side walls of the second-stage bearings. When the second-stage bearings are actually installed, the engaging protrusions are embedded in the engaging grooves.

[0017] Preferably, a first-stage guiding groove is formed at the edge position of the outer end of the first-stage bearing hole, and a second-stage guiding groove is formed at the edge position of the outer end of the first-stage mounting hole. Positioning track grooves and second-stage threaded holes are formed on the side of the front mounting plate. A positioning plate is fixedly installed at the second-stage threaded hole through a positioning bolt. The positioning plate is L-shaped, and a first-stage guiding block, a second-stage guiding block, and a positioning track are fixedly connected to the inner side wall of the positioning plate. The cross-section of the positioning track is an isosceles trapezoid. When the positioning plate is actually installed, the first-stage guiding block, the second-stage guiding block, and the positioning track are respectively inserted into the first-stage guiding groove, the second-stage guiding groove, and the positioning track groove.

[0018] Preferably, the inner ends of the first-stage guiding block and the second-stage guiding block are both semi-circular arcs, and a first-stage positioning tooth and a second-stage positioning tooth are integrally formed on the semi-circular arc side walls of the first-stage guiding block and the second-stage guiding block respectively. A first-stage positioning tooth groove is formed on the outer ring side wall of the first-stage bearing, and a second-stage positioning tooth groove is formed on the side wall of the end of the guide rod. The first-stage positioning tooth groove and the second-stage positioning tooth groove are both equally circumferentially provided with a circle. When the positioning plate is actually installed, the first-stage positioning tooth and the second-stage positioning tooth are respectively engaged in the first-stage positioning tooth groove and the second-stage positioning tooth groove.

[0019] Preferably, a connecting bracket is fixedly connected to the outer side wall of the positioning plate. A guiding disk is rotatably installed on the connecting bracket through a rotating shaft. The guiding disk is coaxially arranged with the transmission lead screw, and a U-shaped groove is formed on the end face of the guiding disk. When the positioning plate is actually installed, the end of the transmission lead screw is engaged in the U-shaped groove. At this time, the inner end of the positioning shaft abuts against the bottom of the positioning shaft hole, and the outer end face of the positioning shaft abuts against the bottom face of the U-shaped groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. By setting up a double-sided and two-color inkjet coding device composed of a frame, a first inkjet coding structure, a second inkjet coding structure and a drying channel, driving the first inkjet coding structure and the second inkjet coding structure through a first transmission structure and a second transmission structure, and setting up a first-stage synchronous sprocket, a second-stage synchronous sprocket and a transmission chain, so as to realize that a single driving structure synchronously drives the first inkjet coding structure and the second inkjet coding structure, thereby effectively optimizing the driving structure of the device and facilitating the circuit control of the equipment;

[0022] 2. By opening a positioning shaft hole, a movable hole and a first-stage threaded hole on the transmission lead screw, setting up a stress rod, a stress seat and a return spring, and setting a positioning shaft in the positioning shaft hole, thereby through the abutting action of the positioning shaft, synchronously installing the first-stage synchronous sprocket, the first-stage bearing and the second-stage bearing, thereby improving the convenience of maintenance and repair of the device, and the stress rod is a hexagonal prism, and the stress rod passes through a regular hexagonal through hole on the threaded seat, and a wrench groove is opened on the outer end face of the stress seat, so that the stress seat can be disassembled and assembled by screwing the stress seat, thereby effectively improving the convenience of disassembly and assembly of the stress seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the present invention;

[0024] Figure 2 It is an actual use effect diagram of the present invention;

[0025] Figure 3 is Figure 2 An enlarged schematic view of the structure at A in

[0026] Figure 4 is Figure 2 An enlarged schematic view of the structure at B in

[0027] Figure 5 It is a schematic structural diagram of the frame of the present invention;

[0028] Figure 6 is Figure 5 An enlarged schematic view of the structure at C in

[0029] Figure 7 is Figure 5 An enlarged schematic view of the structure at D in

[0030] Figure 8 It is a schematic structural diagram of the transmission lead screw of the present invention;

[0031] Figure 9 It is a half-sectional view of the transmission lead screw of the present invention;

[0032] Figure 10 is Figure 9 An enlarged schematic view of the structure at E in

[0033] Figure 11 For Figure 9 Schematic enlarged view of the structure at position F in

[0034] Figure 12 Schematic diagram of the thread seat and force-bearing seat structures of the present invention;

[0035] Figure 13 Half-sectional view of the thread seat and force-bearing seat of the present invention;

[0036] Figure 14 Schematic diagram of the first-level guide block and second-level guide block structures of the present invention;

[0037] Figure 15 Schematic diagram of the guide rod structure of the present invention;

[0038] Figure 16 For Figure 15 Schematic enlarged view of the structure at position G in

[0039] Figure 17 Schematic diagram of the first-level bearing structure of the present invention;

[0040] Figure 18 Schematic diagram of the second-level bearing structure of the present invention.

[0041] In the figure: frame 1, first inkjet coding structure 2, second inkjet coding structure 3, drying channel 4, front mounting plate 5, rear mounting plate 6, lower guiding roller 7, upper guiding roller 8, first transmission structure 9, second transmission structure 10, film 11, guide rod 12, transmission lead screw 13, first-level synchronous sprocket 14, second-level synchronous sprocket 15, transmission chain 16, first-level bearing hole 17, first-level mounting hole 18, second-level bearing hole 19, second-level mounting hole 20, first-level bearing 21, second-level bearing 22, motor bracket 23, servo motor 24, positioning shaft hole 25, movable hole 26, first-level threaded hole 27, thread seat 28, force-bearing rod 29, force-bearing seat 30, return spring 31, regular hexagon through-hole 32, wrench groove 33, positioning shaft 34, engaging groove 35, engaging protrusion 36, first-level guide groove 37, second-level guide groove 38, positioning track groove 39, second-level threaded hole 40, positioning plate 41, positioning bolt 42, first-level guide block 43, second-level guide block 44, positioning track 45, first-level positioning tooth 46, second-level positioning tooth 47, first-level positioning tooth groove 48, second-level positioning tooth groove 49, connecting bracket 50, guide disk 51, U-shaped groove 52, positioning groove 60. Detailed implementation manners

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1 - 18 , the present invention provides embodiments of the following three preferred solutions:

[0044] Embodiment 1: A double-sided and two-color inkjet coding device, including a frame 1, a first inkjet coding structure 2, a second inkjet coding structure 3, and a drying channel 4. A front mounting plate 5 and a rear mounting plate 6 are fixedly connected to the frame 1. A lower guiding roller 7 and an upper guiding roller 8 are rotatably installed between the front mounting plate 5 and the rear mounting plate 6. And the film 11 to be inkjet coded is conveyed from the lower guiding roller 7 to the upper guiding roller 8. A first transmission structure 9 and a second transmission structure 10 are installed between the front mounting plate 5 and the rear mounting plate 6. The first inkjet coding structure 2 is installed on the first transmission structure 9, and the first inkjet coding structure 2 is driven by the first transmission structure 9. The second inkjet coding structure 3 is installed on the second transmission structure 10, and the second inkjet coding structure 3 is driven by the second transmission structure 10. The drying channel 4 is installed between the front mounting plate 5 and the rear mounting plate 6, and the film 11 after inkjet coding passes through the drying channel 4.

[0045] The first transmission structure 9 includes a guide rod 12 and a transmission lead screw 13. The base of the first inkjet structure 2 is movably installed on the guide rod 12, and the base of the first inkjet structure 2 is driven by the transmission lead screw 13. The second transmission structure 10 has the same structure as the first transmission structure 9, and the movement mode of the second inkjet structure 3 is the same as that of the first inkjet structure 2. A servo motor 24 is fixedly installed on the rear mounting plate 6 through a motor bracket 23. One end of the transmission lead screw 13 on the second transmission structure 10 is in transmission connection with the output shaft of the servo motor 24. One end of the transmission lead screw 13 on the first transmission structure 9 is fixedly installed with a primary synchronous sprocket 14, and one end of the transmission lead screw 13 on the second transmission structure 10 is fixedly installed with a secondary synchronous sprocket 15. The primary synchronous sprocket 14 and the secondary synchronous sprocket 15 have the same model, and the primary synchronous sprocket 14 and the secondary synchronous sprocket 15 are in transmission connection through a transmission chain 16. By setting up a double-sided and two-color inkjet device composed of a frame 1, a first inkjet structure 2, a second inkjet structure 3 and a drying channel 4, and driving the first inkjet structure 2 and the second inkjet structure 3 through the first transmission structure 9 and the second transmission structure 10, and through the setting of the primary synchronous sprocket 14, the secondary synchronous sprocket 15 and the transmission chain 16, the first inkjet structure 2 and the second inkjet structure 3 can be driven synchronously by a single driving structure, so as to effectively optimize the driving structure of the device and facilitate the circuit control of the equipment.

[0046] A primary bearing hole 17 and a primary mounting hole 18 are formed on the front mounting plate 5, and a secondary bearing hole 19 and a secondary mounting hole 20 are formed on the rear mounting plate 6. The guide rod 12 is fixed between the front mounting plate 5 and the rear mounting plate 6. A primary bearing 21 and a secondary bearing 22 are respectively fixedly installed in the primary bearing hole 17 and the secondary bearing hole 19. The transmission lead screw 13 is rotatably installed between the front mounting plate 5 and the rear mounting plate 6 through the primary bearing 21 and the secondary bearing 22.

[0047] Embodiment 2: Please refer to Figures 9 - 13 and Figures 17 - 18, on the basis of the first embodiment, a positioning shaft hole 25 is formed in the transmission lead screw 13, and a movable hole 26 is formed in the side wall of the end of the transmission lead screw 13. There are three movable holes 26, and the three movable holes 26 are respectively formed corresponding to the first-stage synchronous sprocket 14, the first-stage bearing 21, and the second-stage bearing 22. A first-stage threaded hole 27 is formed in the bottom surface of the movable hole 26, a threaded seat 28 is screwed in the first-stage threaded hole 27, a regular hexagonal through hole 32 is formed in the threaded seat 28, a force-bearing rod 29 is movably installed in the regular hexagonal through hole 32, the cross-sectional dimension of the force-bearing rod 29 matches the dimension of the regular hexagonal through hole 32, and the inner end of the force-bearing rod 29 is arranged in a hemispherical shape. A force-bearing seat 30 is integrally formed at the outer end of the force-bearing rod 29. The force-bearing seat 30 is movably arranged in the movable hole 26, and the outer end of the force-bearing seat 30 is arranged in a hemispherical shape. A wrench groove 33 is formed in the outer end surface of the force-bearing seat 30. A return spring 31 is sleeved on the force-bearing rod 29. The two ends of the return spring 31 are fixedly glued to the threaded seat 28 and the force-bearing seat 30 respectively. Positioning grooves 60 are formed in the inner hole side walls of the first-stage synchronous sprocket 14, the first-stage bearing 21, and the second-stage bearing 22. The positioning grooves 60 are hemispherical notches, and the dimension of the positioning grooves 60 matches the dimension of the outer end of the force-bearing seat 30. When the return spring 31 is in a reset state, the outer end of the force-bearing seat 30 is embedded into the positioning groove 60. When the force-bearing seat 30 is pushed inward by force, the force-bearing seat 30 completely disengages from the positioning groove 60. A positioning shaft 34 is fixedly installed in the positioning shaft hole 25.

[0048] When the inner end of the force-bearing rod 29 abuts against the side wall of the positioning shaft 34, the outer end of the force-bearing seat 30 is completely embedded into the positioning groove 60. The inner end of the positioning shaft 34 is arranged in a conical shape. By forming the positioning shaft hole 25, the movable hole 26, and the first-stage threaded hole 27 in the transmission lead screw 13, and by arranging the force-bearing rod 29, the force-bearing seat 30, and the return spring 31, and by arranging the positioning shaft 34 in the positioning shaft hole 25, the synchronous installation of the first-stage synchronous sprocket 14, the first-stage bearing 21, and the second-stage bearing 22 can be realized synchronously through the abutting action of the positioning shaft 34, thereby improving the convenience of overhaul and maintenance of the device. And the force-bearing rod 29 is a hexagonal prism, and the force-bearing rod 29 passes through the regular hexagonal through hole 32 in the threaded seat 28, and a wrench groove 33 is formed in the outer end surface of the force-bearing seat 30, so that the disassembly and assembly of the force-bearing seat 30 can be realized by screwing the force-bearing seat 30, thereby effectively improving the convenience of disassembly and assembly of the force-bearing seat 30.

[0049] Embodiment Three: Please refer to Figures 5 - 7 and Figures 14 - 17 , on the basis of the second embodiment, a clamping groove 35 is formed at the edge position of the inner end of the second-stage bearing hole 19, and a clamping protrusion 36 is integrally formed on the outer side wall of the second-stage bearing 22. When the second-stage bearing 22 is actually installed, the clamping protrusion 36 is embedded into the clamping groove 35, which is convenient for positioning and fixing the second-stage bearing 22.

[0050] A first - level guide groove 37 is provided at the outer - end edge position of the first - level bearing hole 17, a second - level guide groove 38 is provided at the outer - end edge position of the first - level mounting hole 18, a positioning track groove 39 and a second - level threaded hole 40 are provided on the side of the front - position mounting plate 5. A positioning plate 41 is fixedly installed at the second - level threaded hole 40 through a positioning bolt 42. The positioning plate 41 is arranged in an L - shape, and a first - level guide block 43, a second - level guide block 44 and a positioning track 45 are fixedly connected to the inner side wall of the positioning plate 41. The cross - section of the positioning track 45 is in an isosceles trapezoid shape. When the positioning plate 41 is actually installed, the first - level guide block 43, the second - level guide block 44 and the positioning track 45 are respectively inserted into the first - level guide groove 37, the second - level guide groove 38 and the positioning track groove 39.

[0051] The inner ends of the first - level guide block 43 and the second - level guide block 44 are both in a semi - circular arc shape, and a first - level positioning tooth 46 and a second - level positioning tooth 47 are integrally formed on the semi - circular arc side walls of the first - level guide block 43 and the second - level guide block 44 respectively. A first - level positioning tooth groove 48 is provided on the outer - circle side wall of the first - level bearing 21, and a second - level positioning tooth groove 49 is provided on the end - side wall of the guide rod 12. The first - level positioning tooth groove 48 and the second - level positioning tooth groove 49 are both equally - circularly provided with a circle. When the positioning plate 41 is actually installed, the first - level positioning tooth 46 and the second - level positioning tooth 47 are respectively engaged in the first - level positioning tooth groove 48 and the second - level positioning tooth groove 49. Through the installation of the positioning plate 41, the first - level guide block 43, the second - level guide block 44 and the positioning track 45 can be respectively inserted into the first - level guide groove 37, the second - level guide groove 38 and the positioning track groove 39 synchronously, so that the first - level positioning tooth 46 and the second - level positioning tooth 47 can be synchronously engaged in the first - level positioning tooth groove 48 and the second - level positioning tooth groove 49, thereby synchronously positioning and fixing the guide rod 12 and the first - level bearing 21.

[0052] A connecting bracket 50 is fixedly connected to the outer side wall of the positioning plate 41. A guide disk 51 is rotatably installed on the connecting bracket 50 through a rotating shaft. The guide disk 51 is coaxially arranged with the transmission lead screw 13, and a U - shaped groove 52 is provided on the end face of the guide disk 51. When the positioning plate 41 is actually installed, the end of the transmission lead screw 13 is engaged in the U - shaped groove 52. At this time, the inner end of the positioning shaft 34 abuts against the bottom of the positioning shaft hole 25, and the outer end face of the positioning shaft 34 abuts against the bottom surface of the U - shaped groove 52. Through the installation of the positioning plate 41, the end of the positioning shaft 34 can be synchronously positioned and fixed, so that the positioning shaft 34 can be positioned without using other positioning structures. Thus, when the device disassembles and assembles the positioning plate 41, the synchronous disassembly and assembly of the guide rod 12, the transmission lead screw 13, the synchronous sprocket, the first - level bearing 21 and the second - level bearing 22 can be realized, thereby further improving the convenience of the overall disassembly, assembly and maintenance of the device.

[0053] Although the above description of the specific embodiments of the present application has been given for the convenience of those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all inventions and creations that utilize the concept of the present application are within the scope of protection.

Claims

1. A double-sided and two-color inkjet coding device, characterized in that: Comprising: A frame (1), on which a front mounting plate (5) and a rear mounting plate (6) are fixedly connected. A lower guiding roller (7) and an upper guiding roller (8) are rotatably mounted between the front mounting plate (5) and the rear mounting plate (6). And the film (11) to be inkjet-printed is conveyed from the lower guiding roller (7) towards the upper guiding roller (8). A first transmission structure (9) and a second transmission structure (10) are mounted between the front mounting plate (5) and the rear mounting plate (6); A first inkjet printing structure (2), which is mounted on the first transmission structure (9) and is driven by the first transmission structure (9); A second inkjet printing structure (3), which is mounted on the second transmission structure (10) and is driven by the second transmission structure (10); A drying channel (4), which is mounted between the front mounting plate (5) and the rear mounting plate (6), and the film (11) after inkjet printing passes through the drying channel (4); The first transmission structure (9) includes a guide rod (12) and a transmission lead screw (13). The second transmission structure (10) has the same structure as the first transmission structure (9). A servo motor (24) is fixedly mounted on the rear mounting plate (6) through a motor bracket (23). The transmission lead screw (13) is rotatably mounted between the front mounting plate (5) and the rear mounting plate (6) through a first-level bearing (21) and a second-level bearing (22); A positioning shaft hole (25) is provided on the transmission lead screw (13). A movable hole (26) is provided on the side wall of the end of the transmission lead screw (13). There are three movable holes (26), and the three movable holes (26) are respectively provided corresponding to a first-level synchronous sprocket (14), a first-level bearing (21), and a second-level bearing (22). A first-level threaded hole (27) is provided on the bottom surface of the movable hole (26). A threaded seat (28) is screwed in the first-level threaded hole (27). A regular hexagon through hole (32) is provided on the threaded seat (28). A force-bearing rod (29) is movably mounted in the regular hexagon through hole (32). The cross-sectional dimension of the force-bearing rod (29) matches the dimension of the regular hexagon through hole (32), and the inner end of the force-bearing rod (29) is hemispherical. A force-bearing seat (30) is integrally formed on the outer end of the force-bearing rod (29). The force-bearing seat (30) is movably arranged in the movable hole (26), and the outer end of the force-bearing seat (30) is hemispherical. A wrench groove (33) is provided on the outer end face of the force-bearing seat (30). A return spring (31) is sleeved on the force-bearing rod (29), and the two ends of the return spring (31) are fixedly glued to the threaded seat (28) and the force-bearing seat (30) respectively; Positioning grooves (60) are provided on the inner hole side walls of the first-stage synchronous sprocket (14), the first-stage bearing (21), and the second-stage bearing (22). The positioning grooves (60) are hemispherical notches, and the dimensions of the positioning grooves (60) match the outer end dimensions of the force-bearing seat (30). When the return spring (31) is in the return state, the outer end of the force-bearing seat (30) is embedded in the positioning groove (60). When the force-bearing seat (30) is pushed inward by force, the force-bearing seat (30) completely disengages from the positioning groove (60). A positioning shaft (34) is fixedly installed in the positioning shaft hole (25). When the inner end of the force-bearing rod (29) abuts against the side wall of the positioning shaft (34), the outer end of the force-bearing seat (30) is completely embedded in the positioning groove (60). The inner end of the positioning shaft (34) is tapered. A positioning track groove (39) and a second-stage threaded hole (40) are provided on the side of the front-position mounting plate (5). A positioning plate (41) is fixedly installed at the second-stage threaded hole (40) through a positioning bolt (42). The positioning plate (41) is L-shaped, and a first-stage guide block (43), a second-stage guide block (44), and a positioning track (45) are fixedly connected to the inner side wall of the positioning plate (41). The inner ends of the first-stage guide block (43) and the second-stage guide block (44) are both semi-circular. A first-stage positioning tooth (46) and a second-stage positioning tooth (47) are integrally formed on the semi-circular side walls of the first-stage guide block (43) and the second-stage guide block (44) respectively. A first-stage positioning tooth groove (48) is provided on the outer ring side wall of the first-stage bearing (21). A second-stage positioning tooth groove (49) is provided on the end side wall of the guide rod (12). The first-stage positioning tooth groove (48) and the second-stage positioning tooth groove (49) are both equally circumferentially provided with a circle. When the positioning plate (41) is actually installed, the first-stage positioning tooth (46) and the second-stage positioning tooth (47) are respectively engaged in the first-stage positioning tooth groove (48) and the second-stage positioning tooth groove (49).

2. The double-sided and two-color inkjet coding device according to claim 1, wherein: The base of the first inkjet coding structure (2) is movably installed on the guide rod (12), and the base of the first inkjet coding structure (2) is driven by a transmission lead screw (13). The movement mode of the second inkjet coding structure (3) is the same as that of the first inkjet coding structure (2). One end of the transmission lead screw (13) on the second transmission structure (10) is in transmission connection with the output shaft of the servo motor (24). One end of the transmission lead screw (13) on the first transmission structure (9) is fixedly installed with a first-stage synchronous sprocket (14). One end of the transmission lead screw (13) on the second transmission structure (10) is fixedly installed with a second-stage synchronous sprocket (15). The first-stage synchronous sprocket (14) and the second-stage synchronous sprocket (15) have the same model, and the first-stage synchronous sprocket (14) and the second-stage synchronous sprocket (15) are in transmission connection through a transmission chain (16).

3. The double-sided and two-color inkjet coding device according to claim 2, wherein: The front mounting plate (5) is provided with a first-level bearing hole (17) and a first-level mounting hole (18), the rear mounting plate (6) is provided with a second-level bearing hole (19) and a second-level mounting hole (20), the guide rod (12) is fixed between the front mounting plate (5) and the rear mounting plate (6), and a first-level bearing (21) and a second-level bearing (22) are respectively fixedly installed in the first-level bearing hole (17) and the second-level bearing hole (19).

4. A double-sided and two-color inkjet coding device according to claim 3, characterized in that: A clamping groove (35) is formed at the inner end edge position of the second-level bearing hole (19), a clamping protrusion (36) is integrally formed on the outer side wall of the second-level bearing (22), and when the second-level bearing (22) is actually installed, the clamping protrusion (36) is embedded into the clamping groove (35).

5. A double-sided and two-color inkjet coding device according to claim 4, characterized in that: A first-level guiding groove (37) is formed at the outer end edge position of the first-level bearing hole (17), a second-level guiding groove (38) is formed at the outer end edge position of the first-level mounting hole (18), the cross section of the positioning track (45) is an isosceles trapezoid, and when the positioning plate (41) is actually installed, the first-level guiding block (43), the second-level guiding block (44) and the positioning track (45) are respectively inserted into the first-level guiding groove (37), the second-level guiding groove (38) and the positioning track groove (39).

6. The double-sided and two-color inkjet coding device according to claim 5, characterized in that: A connecting bracket (50) is fixedly connected to the outer side wall of the positioning plate (41), a guiding disc (51) is rotatably installed on the connecting bracket (50) through a rotating shaft, the guiding disc (51) is coaxially arranged with the transmission lead screw (13), and a U-shaped groove (52) is formed in the end face of the guiding disc (51). When the positioning plate (41) is actually installed, the end of the transmission lead screw (13) is clamped into the U-shaped groove (52), and at this time, the inner end of the positioning shaft (34) abuts against the bottom of the positioning shaft hole (25), and the outer end face of the positioning shaft (34) abuts against the bottom surface of the U-shaped groove (52).

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