Water-based reverse gloss oil printing device

Abstract

The utility model relates to the technical field of printing, in particular to a water-based reverse gloss oil printing device which comprises an installation frame and a fixing shell. By arranging the shell conveying assembly, the auxiliary pressing assembly and the limiting assembly, the semi-circular roller can be fixedly installed at the proper position of the rotating shaft according to the printing length in the using process, the installed semi-circular roller is sleeved with the second conveying belt, the second conveying belt can be used for stably conveying a printed object, and the printing efficiency is improved. The two baffles can limit the two sides of a printed object through driving of a double-head motor, the precision of water-based reverse gloss oil printing is further improved, in addition, through the effect of an electric push rod, a pressing roller can press the printed object on a printing roller with the proper force, and the printing precision is improved. The stability and effect of water-based reverse gloss oil printing are improved, accurate printing can be achieved, and the printing effect is improved.

Description

Technical Field

[0001] The utility model relates to a printing machine, in particular to a water-based reverse varnish printing device. Background Art

[0002] Pro-cure is relative to traditional local glazing. In the past, no matter which glazing method (flexographic printing, screen printing or gravure printing) is used for local glazing, the last glazing process must use local glazing plate printing to achieve a high contrast effect of local graphics. Therefore, the positioning accuracy of glazing and printing has become a key factor in the glazing process. The reverse glazing process breaks through the above law, and its process flow is as follows: before glazing, conventional printing must be completed first, and it is determined that the ink has been completely dried or cured; then, the non-highlight parts of the design draft are printed with transparent reverse primer by offset printing in an online or offline manner; then, the glazing oil is applied in full plate and cured in an online manner. At this time, the varnish and reverse primer form small particles, similar to the frosted effect, and the reverse glazing area forms a mirror highlight effect.

[0003] When the prior art printer performs water-based reverse varnish printing, the water-based reverse varnish is directly sprayed onto the printing roller through a nozzle, and a complex control system is required to control the nozzle. Once the nozzle is damaged, it is inconvenient to maintain and will have a great impact on the printing effect, which is not conducive to use; and when the prior art printer performs water-based reverse varnish printing, it cannot be adjusted according to the size of the printed page, and the position of the printed object is easily offset during the printing process, thereby greatly reducing the printing effect. Based on the above reasons, the utility model proposes a water-based reverse varnish printing device. Summary of the invention

[0004] In view of the deficiencies of the prior art, the utility model provides a water-based reverse varnish printing device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A water-based reverse varnish printing device comprises a mounting frame, wherein two fixed shells are fixedly connected at the center of the mounting frame, a feed pipe is fixedly connected to the side wall of the fixed shell, a printing roller is installed at the lower side of the fixed shell, the side wall center of the printing roller is fixedly connected to a main shaft, the main shaft is movably connected to the mounting frame and is provided with a printing drive assembly, two movable plates are symmetrically arranged on each of the printing rollers, a spacing adjustment assembly is arranged on the movable plate, a limiting assembly is arranged between the two fixed shells, two rotating shafts are symmetrically arranged in the inner cavity of the mounting frame, a fixed roller is fixedly connected at the center of the side wall of the rotating shaft, the two fixed rollers are sleeved with the same first conveyor belt, and adjustable conveying assemblies are arranged on both sides of the first conveyor belt, the mounting frame is fixedly connected to a fixed plate located at the lower side of the printing roller, an auxiliary pressing assembly is arranged on the fixed plate, and a drying device is fixedly installed near the front side of the mounting frame.

[0007] As a preferred technical solution of the utility model, the printing drive assembly includes a pulley, the main shaft passes through the fixed shell and the mounting frame and is fixedly connected to the pulley, the mounting frame is fixedly connected to a mounting plate on the side wall between the two pulleys, the mounting plate is fixedly connected to a first motor, the rotor of the first motor is fixedly connected to a first circular shaft, the side wall of the first circular shaft is fixedly connected to another pulley, and the three pulleys are covered with the same belt.

[0008] As a preferred technical solution of the utility model, the spacing adjustment component includes a second motor, the second motor is fixed at the center of the top surface of the fixed shell, the second motor is fixedly connected to the rotor with a second circular shaft, the second circular shaft passes through the fixed shell and is fixedly connected to the first bevel gear, the first bevel gear is meshed with a second bevel gear, the side wall center of the second bevel gear is fixedly connected to a first threaded rod, the two sides of the first threaded rod are movably connected to the side walls of the inner cavity of the fixed shell, the side walls of the first threaded rod are symmetrically threaded with two connecting blocks, the connecting blocks are fixedly connected to the movable plate, the first bevel gear and the second bevel gear are provided with an inner shell, and the inner shell is fixedly connected to the fixed shell.

[0009] As a preferred technical solution of the utility model, the limit assembly includes a double-headed motor, side plates are fixedly connected on both sides of the double-headed motor, the side plates are fixedly connected to the fixed shell, two second threaded rods are fixedly connected to the double-headed motor, cross plates are threadedly connected to the side walls of the second threaded rods, the cross plates are movably connected to the fixed shell, baffles are fixedly connected to the bottom surface of the cross plate, and the bottom surface of the baffle extends to the lower side of the bottom surface of the printing roller.

[0010] As a preferred technical solution of the utility model, a slide groove is provided on the top surface of the fixed shell, and two sliders are fixedly connected to the bottom surface of the horizontal plate. The sliders are respectively inserted into the slide grooves and are movably connected to the slide grooves.

[0011] As a preferred technical solution of the utility model, the adjustable conveying assembly includes a semicircular roller, a slot is opened on a rectangular side of the semicircular roller, and a plug plate is fixedly connected to the other rectangular side of the semicircular roller. The shapes and positions of the plug plate and the slot are matched with each other. Two semicircular rollers are arranged on both sides of the fixed roller, and the plug plates and the slots on two adjacent semicircular rollers are plugged into each other and the semicircular rollers are fixedly connected to each other. Second conveyor belts are arranged on both sides of the first conveyor belt, and the second conveyor belts are respectively sleeved on the semicircular rollers on both sides.

[0012] As a preferred technical solution of the utility model, flat plates are fixedly connected to the fan-shaped side surfaces on both sides of the semicircular roller, and two adjacent flat plates are fixedly connected by bolts.

[0013] As a preferred technical solution of the utility model, the auxiliary clamping assembly includes a clamping roller, which is movably connected to a connecting frame, and the connecting frame is concavely arranged. Two vertical rods are symmetrically fixedly connected to the bottom surface of the connecting frame, and the bottom ends of the two vertical rods pass through a fixed plate and are fixedly connected to the same bottom plate. Electric push rods are fixedly connected to the bottom plate near both sides, and the electric push rods are fixedly connected to the mounting frame.

[0014] As a preferred technical solution of the utility model, the bottom surface of the movable plate is matched with the printing roller, the side walls of the movable plate are matched with the inner wall of the fixed shell, and a sealing gasket is fixedly connected to the side wall of the movable plate.

[0015] The present invention provides a water-based reverse varnish printing device, which has the following beneficial effects:

[0016] 1. The utility model is provided with a fixed shell, a printing roller and a spacing adjustment component. When in use, varnish and reverse varnish primer are respectively added into the inner cavities of the two fixed shells, and the first threaded rod is driven by the second motor. The first threaded rod drives the two movable plates to move in the inner cavity of the fixed shell through the connecting block. At this time, the water-based reverse varnish is located between the two movable plates and the contact position of the water-based reverse varnish and the printing roller is limited through the movable plate, so that the printing roller can perform convenient water-based reverse varnish printing operation, which has the advantages of simple structure and convenient operation;

[0017] 2. The utility model is provided with a shell conveying component, an auxiliary clamping component and a limiting component. When in use, the semicircular roller can be fixedly installed at a suitable position on the rotating shaft according to the size of the printed page, and a second conveyor belt is sleeved on the installed semicircular roller. The second conveyor belt can be used to stably convey the printed material, and the two baffles can be driven by a double-headed motor to limit the two sides of the printed material, further improving the accuracy of water-based reverse varnish printing. In addition, through the action of the electric push rod, the clamping roller can press the printed material on the printing roller with an appropriate force, thereby improving the stability and effect of water-based reverse varnish printing, achieving precise printing, and improving the printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a front three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a side perspective structural schematic diagram of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the fixed shell of the utility model;

[0022] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the fixed shell of the utility model;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the limit assembly of the utility model;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure in the mounting frame of the utility model;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the auxiliary pressing assembly of the utility model;

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the printing drive assembly of the utility model;

[0027] Fig. 9 It is a three-dimensional structural schematic diagram of the semicircular roller of the utility model;

[0028] Fig.10 It is a three-dimensional structural schematic diagram of the movable plate of the utility model.

[0029] In the figure: 1, mounting frame; 2, fixed shell; 3, printing roller; 4, main shaft; 5, printing drive assembly; 6, movable plate; 7, sealing gasket; 8, spacing adjustment assembly; 9, limit assembly; 10, rotating shaft; 11, fixed roller; 12, first conveyor belt; 13, adjustable conveyor assembly; 14, fixed plate; 15, auxiliary pressing assembly; 16, drying equipment; 17, pulley; 18, mounting plate; 19, first motor; 20, first round shaft; 21, belt; 22, second motor; 23, second round Shaft; 24, first bevel gear; 25, second bevel gear; 26, first threaded rod; 27, connecting block; 28, inner shell; 29, double-headed motor; 30, side plate; 31, second threaded rod; 32, cross plate; 33, baffle; 34, slide; 35, slider; 36, semicircular roller; 37, slot; 38, plug plate; 39, second conveyor belt; 40, flat plate; 41, bolt; 42, clamping roller; 43, connecting frame; 44, vertical rod; 45, bottom plate; 46, electric push rod; 47, feed pipe. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] Example: Figure 1-10 As shown, a water-based reverse varnish printing device comprises a mounting frame 1, wherein two fixed shells 2 are fixedly connected at the center of the mounting frame 1, a feed pipe 47 is fixedly connected to the side wall of the fixed shell 2, a printing roller 3 is installed at the lower side of the fixed shell 2, a main shaft 4 is fixedly connected to the center of the side wall of the printing roller 3, the main shaft 4 is movably connected to the mounting frame 1 and is provided with a printing drive assembly 5, the printing drive assembly 5 comprises a pulley 17, the main shaft 4 passes through the fixed shell 2 and the mounting frame 1 and is fixedly connected to the pulley 17, a mounting plate 18 is fixedly connected to the side wall of the mounting frame 1 located between the two pulleys 17, a first motor 19 is fixedly connected to the mounting plate 18, a first round shaft 20 is fixedly connected to the rotor of the first motor 19, another round shaft 20 is fixedly connected to the side wall of the first round shaft 20, and the same belt 21 is sleeved on the three pulleys 17, so as to realize the rotation drive of the printing roller 3, so that the water-based reverse varnish is evenly adhered to the printing roller 3 to realize the printing operation, and the printing is convenient;

[0032] Two movable plates 6 are symmetrically arranged on each printing roller 3, and a spacing adjustment component 8 is arranged on the movable plate 6. The spacing adjustment component 8 includes a second motor 22, and the second motor 22 is fixed at the center of the top surface of the fixed shell 2. A second circular shaft 23 is fixedly connected to the rotor of the second motor 22, and the second circular shaft 23 penetrates the fixed shell 2 and is fixedly connected to a first bevel gear 24. A second bevel gear 25 is meshed on the first bevel gear 24, and a first threaded rod 26 is fixedly connected to the center of the side wall of the second bevel gear 25. Both sides of the first threaded rod 26 are movably connected to the side walls of the inner cavity of the fixed shell 2. Two connecting blocks 27 are symmetrically threadedly connected on the side walls of the first threaded rod 26, and the connecting blocks 27 are fixedly connected to the movable plate 6. An inner shell 28 is arranged at the first bevel gear 24 and the second bevel gear 25, and the inner shell 28 is fixedly connected to the fixed shell 2, so that the spacing between the movable plate 6 and the inner cavity of the fixed shell 2 can be adjusted, so that the device can conveniently realize the accurate printing operation on the printed material, and the structure is simple and easy to control;

[0033] The bottom surface of the movable plate 6 is matched with the printing roller 3, the side walls of the movable plate 6 are matched with the inner wall of the fixed shell 2, and the side walls of the movable plate 6 are fixedly connected with a sealing gasket 7 to improve the sealing between the movable plate 6 and the printing roller 3, avoid leakage of water-based reverse varnish, and achieve good use effect;

[0034] A limit assembly 9 is arranged between the two fixed shells 2, and the limit assembly 9 includes a double-headed motor 29, and side plates 30 are fixedly connected to both sides of the double-headed motor 29, and the side plates 30 are fixedly connected to the fixed shell 2, and two second threaded rods 31 are fixedly connected to the double-headed motor 29, and the side walls of the second threaded rods 31 are threadedly connected to the cross plates 32, and the cross plates 32 are movably connected to the fixed shell 2, and the bottom surfaces of the cross plates 32 are fixedly connected to the baffles 33, and the bottom surfaces of the baffles 33 extend to the lower side of the bottom surface of the printing roller 3, and the baffles 33 can be used to limit the two sides of the printed material, thereby improving the stability of the conveying and the printing effect;

[0035] Among them, the top surface of the fixed shell 2 is provided with a slide groove 34, and the bottom surface of the horizontal plate 32 is fixedly connected with two sliders 35, and the sliders 35 are respectively inserted into the slide grooves 34 and the sliders 35 are movably connected with the slide grooves 34, so that the movement stability of the horizontal plate 32 is high, which is convenient for realizing accurate limit operation;

[0036] Two rotating shafts 10 are symmetrically installed in the inner cavity of the mounting frame 1. A fixed roller 11 is fixedly connected at the center of the side wall of the rotating shaft 10. The two fixed rollers 11 are sleeved with the same first conveyor belt 12. Adjustable conveying components 13 are arranged on both sides of the first conveyor belt 12. The adjustable conveying components 13 include a semicircular roller 36. A slot 37 is opened on a rectangular side of the semicircular roller 36. A plug plate 38 is fixedly connected on the other rectangular side of the semicircular roller 36. The shapes and positions of the plug plate 38 and the slot 37 are matched with each other. Two semicircular rollers 36 are arranged on both sides of the fixed roller 11. The plug plates 38 and the slots 37 on the two adjacent semicircular rollers 36 are plugged into each other and the semicircular rollers 36 are fixedly connected to each other. Second conveyor belts 39 are arranged on both sides of the first conveyor belt 12. The second conveyor belts 39 are respectively sleeved on the semicircular rollers 36 on both sides, so that the conveying adjustment operation can be realized according to the size of the printed material, thereby realizing a stable conveying operation of the printed material and improving the effect of water-based reverse varnish printing;

[0037] Among them, the fan-shaped side surfaces on both sides of the semicircular roller 36 are fixedly connected with a flat plate 40, and two adjacent flat plates 40 are fixedly connected by bolts 41, which can conveniently realize the fixed installation operation between the semicircular roller 36 and the rotating shaft 10;

[0038] The mounting frame 1 is located at the lower side of the printing roller 3 and is fixedly connected with a fixing plate 14. The fixing plate 14 is provided with an auxiliary pressing assembly 15. The auxiliary pressing assembly 15 includes a pressing roller 42. The pressing roller 42 is movably connected with a connecting frame 43. The connecting frame 43 is concavely arranged. Two vertical rods 44 are symmetrically fixedly connected to the bottom surface of the connecting frame 43. The bottom ends of the two vertical rods 44 penetrate the fixing plate 14 and are fixedly connected to the same bottom plate 45. The bottom plate 45 is fixedly connected with electric push rods 46 near both sides. The electric push rods 46 are fixedly connected to the mounting frame 1. Through the action of the pressing roller 42, the printed material can be pressed on the printing roller 3 with a suitable force to improve the printing effect.

[0039] A drying device 16 is fixedly installed near the front side of the mounting frame 1, which can realize a rapid drying operation of the water-based reverse varnish after printing, and the printing effect is good.

[0040] Working principle: When the utility model is used, the device is first adaptively adjusted according to the size of the printed page. In the first step, a semicircular roller 36 is sleeved at a suitable position on the side wall of the rotating shaft 10, so that the plug plates 38 and the slots 37 on the two adjacent semicircular rollers 36 are plugged together, and the two semicircular rollers 36 are fixedly installed on the rotating shaft 10 by bolts 41. Then, the second conveyor belt 39 is sleeved on the installed semicircular roller 36. At this time, the second conveyor belts 39 on both sides can realize the conveyance of the printed material on both sides, thereby improving the stability of the printing conveyance. In the second step, the device is connected to an external power supply, and the second motor 22 is started. The second motor 22 passes through the second The circular shaft 23 drives the first bevel gear 24 to rotate, the first bevel gear 24 engages with the second bevel gear 25 to rotate, the second bevel gear 25 drives the first threaded rod 26 to rotate, the first threaded rod 26 engages with two connecting blocks 27 to move, the connecting blocks 27 drive the movable plates 6 on both sides to move in the inner cavity of the fixed shell 2, the spacing between the two movable plates 6 is changed to adapt to the size of the page, the movement of the second motor 22 is stopped, and the third step is to start the double-headed motor 29, the double-headed motor 29 drives the second threaded rod 31 to rotate, the second threaded rod 31 engages with the cross plate 32 to move, and the cross plate 32 drives the baffle 33 to move, so that the spacing between the baffles 33 on both sides can adapt to the width setting of the printed material, thereby realizing the printing of the printed material. The limit on both sides of the printed object improves the accuracy of printing. In the fourth step, the electric push rod 46 is started, and the electric push rod 46 drives the vertical rod 44 to move. The vertical rod 44 drives the clamping roller 42 on the connecting frame 43 to move, so that the clamping roller 42 moves to a certain distance from the printing roller 3, which is convenient for the printing effect of the printing roller 3 during the printing process, and completes the adaptive adjustment operation of the device. Then, the water-based reverse varnish raw material is respectively added into the inner cavity of the fixed shell 2 through the feed pipe 47, and the water-based reverse varnish raw material is positioned between the movable plates 6. At this time, only the printing roller 3 between the movable plates 6 is in contact with the water-based reverse varnish, which can conveniently control the printing, and then through external equipment The material to be printed is placed at a suitable position on the top surface of the first conveyor belt 12 and the second conveyor belt 39, and the rotating shaft 10 is driven to rotate by an external device. At this time, the first conveyor belt 12 and the second conveyor belt 39 realize the transportation of the material to be printed, and the pulley 17 on the first circular shaft 20 is driven to rotate by the first motor 19, and the belt 21 is used to transmit the rotation of the main shaft 4. The main shaft 4 drives the printing roller 3 to rotate, and the printing operation of the water-based reverse varnish is realized by the printing roller 3. When the material to be printed moves to the lower side of the two printing rollers 3 and passes through, the water-based reverse varnish printing operation can be realized, and then the printed items are dried by the drying equipment 16 to complete the water-based reverse varnish printing operation.

[0041] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water-based reverse varnish printing device, comprising a mounting frame (1), characterized in that: Two fixed shells (2) are fixedly connected at the center of the mounting frame (1), a feed pipe (47) is fixedly connected to the side wall of the fixed shell (2), a printing roller (3) is installed at the lower side of the fixed shell (2), a main shaft (4) is fixedly connected to the center of the side wall of the printing roller (3), the main shaft (4) is movably connected to the mounting frame (1) and is provided with a printing drive component (5), two movable plates (6) are symmetrically provided on each printing roller (3), a spacing adjustment component (8) is provided on the movable plate (6), and a limit position component is provided between the two fixed shells (2). (9), two rotating shafts (10) are symmetrically installed in the inner cavity of the mounting frame (1), a fixed roller (11) is fixedly connected to the center of the side wall of the rotating shaft (10), the two fixed rollers (11) are sleeved with the same first conveyor belt (12), and adjustable conveying components (13) are arranged on both sides of the first conveyor belt (12), the mounting frame (1) is fixedly connected to a fixed plate (14) located at the lower side of the printing roller (3), and an auxiliary clamping component (15) is arranged on the fixed plate (14), and a drying device (16) is fixedly installed near the front side of the mounting frame (1).

2. The water-based reverse varnish printing device according to claim 1, characterized in that: The printing drive assembly (5) comprises a pulley (17), the main shaft (4) passes through the fixed shell (2) and the mounting frame (1) and is fixedly connected to the pulley (17), the mounting frame (1) is fixedly connected to a mounting plate (18) on a side wall between two pulleys (17), the mounting plate (18) is fixedly connected to a first motor (19), the rotor of the first motor (19) is fixedly connected to a first circular shaft (20), the side wall of the first circular shaft (20) is fixedly connected to another pulley (17), and the three pulleys (17) are sleeved with a same belt (21).

3. The water-based reverse varnish printing device according to claim 1, characterized in that: The spacing adjustment component (8) comprises a second motor (22), the second motor (22) being fixed at the center of the top surface of the fixed shell (2), a second circular shaft (23) being fixedly connected to the rotor of the second motor (22), the second circular shaft (23) penetrating the fixed shell (2) and being fixedly connected to a first bevel gear (24), a second bevel gear (25) being meshed with the first bevel gear (24), a first threaded rod (26) being fixedly connected to the center of the side wall of the second bevel gear (25), both sides of the first threaded rod (26) being movably connected to the side walls of the inner cavity of the fixed shell (2), two connecting blocks (27) being symmetrically threadedly connected to the side walls of the first threaded rod (26), the connecting blocks (27) being fixedly connected to the movable plate (6), an inner shell (28) being provided at the first bevel gear (24) and the second bevel gear (25), the inner shell (28) being fixedly connected to the fixed shell (2).

4. The water-based reverse varnish printing device according to claim 1, characterized in that: The limit assembly (9) comprises a double-headed motor (29), both sides of which are fixedly connected with side plates (30), the side plates (30) are fixedly connected to the fixed shell (2), two second threaded rods (31) are fixedly connected to the double-headed motor (29), the side walls of the second threaded rods (31) are threadedly connected with cross plates (32), the cross plates (32) are movably connected to the fixed shell (2), and the bottom surface of the cross plates (32) is fixedly connected with baffles (33), and the bottom surface of the baffles (33) extends to the lower side of the bottom surface of the printing roller (3).

5. The water-based reverse varnish printing device according to claim 4, characterized in that: The top surface of the fixed shell (2) is provided with a slide groove (34), and the bottom surface of the horizontal plate (32) is fixedly connected with two sliders (35), and the sliders (35) are respectively inserted into the slide grooves (34) and the sliders (35) are movably connected to the slide grooves (34).

6. The water-based reverse varnish printing device according to claim 1, characterized in that: The adjustable conveying assembly (13) comprises a semicircular roller (36), a slot (37) is provided on one rectangular side of the semicircular roller (36), a plug plate (38) is fixedly connected to the other rectangular side of the semicircular roller (36), the plug plate (38) and the slot (37) are matched in shape and position, two semicircular rollers (36) are provided on both sides of the fixed roller (11), the plug plates (38) and the slot (37) on two adjacent semicircular rollers (36) are plugged into each other and the semicircular rollers (36) are fixedly connected to each other, and second conveyor belts (39) are provided on both sides of the first conveyor belt (12), and the second conveyor belts (39) are respectively sleeved on the semicircular rollers (36) on both sides.

7. The water-based reverse varnish printing device according to claim 6, characterized in that: Flat plates (40) are fixedly connected to the fan-shaped side surfaces on both sides of the semicircular roller (36), and two adjacent flat plates (40) are fixedly connected by bolts (41).

8. The water-based reverse varnish printing device according to claim 1, characterized in that: The auxiliary clamping assembly (15) comprises a clamping roller (42), the clamping roller (42) is movably connected to a connecting frame (43), the connecting frame (43) is arranged in a concave shape, and two vertical rods (44) are symmetrically fixedly connected to the bottom surface of the connecting frame (43), the bottom ends of the two vertical rods (44) pass through the fixed plate (14) and are fixedly connected to the same bottom plate (45), the bottom plate (45) is fixedly connected to electric push rods (46) near both sides, and the electric push rods (46) are fixedly connected to the mounting frame (1).

9. The water-based reverse varnish printing device according to claim 1, characterized in that: The bottom surface of the movable plate (6) is matched with the printing roller (3), the side walls of the movable plate (6) are matched with the inner wall of the fixed shell (2), and a sealing gasket (7) is fixedly connected to the side wall of the movable plate (6).

Images