Printing equipment with replaceable machine head and digital synergy unit

Abstract

The utility model is applicable to the field of printing equipment, and provides printing equipment with a replaceable machine head and a digital synergy unit, which comprises an unwinding unit or a winding unit arranged at the front end, and a winding unit or an unwinding unit arranged at the tail end, the gold blocking unit, the silk screen unit, the flexographic printing unit, the digital synergy unit or the die cutting unit are arranged between the unwinding unit and the winding unit, and the machine head replacing unit is arranged on the gold blocking unit, the silk screen unit, the flexographic printing unit, the digital synergy unit or the die cutting unit and used for changing the printing direction of each unit. The technical problems that in the prior art, printing equipment cannot change the printing direction, and all units of the printing equipment cannot be recombined or singly used after being disassembled are solved.

Description

Technical Field

[0001] The utility model belongs to the field of printing equipment, in particular to a printing equipment with a replaceable head and a digital enhancement unit. Background Art

[0002] With the development of the times, customers' demand for printed products is getting higher and higher, and the types of orders are increasing. More and more customers need more beautiful printed products. Therefore, the demand for printing equipment and post-processing machinery is also increasing. The traditional method is to equip each different process with different independent machines, such as hot stamping process requires hot stamping machine, glazing process requires glazing machine, screen printing process requires screen printing machine, flexographic printing process requires flexographic printing machine, die-cutting process requires die-cutting machine, etc. The result of this is that different operators are required to control different machines, resulting in increased labor costs, and multiple machines occupy a large area and high site costs.

[0003] With the development of the times, people's demand for personalization is getting higher and higher, so printed products are also moving towards personalization. However, personalization often means small batches and multiple varieties. The production of printed products with traditional technology requires plate making, and different processes require different plates. Therefore, when making personalized orders, the cost of plate making is too high. However, the use of digital enhancement units can avoid plate making, and only one document is required to achieve the same effect as traditional technology. However, traditional technology has the advantages of stability, speed and low cost when making large orders, so a utility model is needed to combine the advantages of tradition and digital. Utility Model Content

[0004] The purpose of the utility model is to provide a printing device with a replaceable head and a digital enhancement unit, aiming to solve the technical problems that the printing device in the prior art cannot change the printing direction and the various units of the printing device cannot be disassembled and reassembled or used alone.

[0005] The utility model is implemented as follows: a printing device with a replaceable head and a digital enhancement unit, the printing device comprising an unwinding unit or a rewinding unit arranged at the front end, a rewinding unit or an unwinding unit arranged at the rear end, at least one hot stamping unit, a screen unit, a flexographic printing unit, a digital enhancement unit or a die-cutting unit arranged between the unwinding unit and the rewinding unit, and a head replacement unit arranged on the hot stamping unit, the screen unit, the flexographic printing unit, the digital enhancement unit or the die-cutting unit for changing the printing direction of each unit; the head replacement unit comprises a bottom plate placed on a frame and having slide grooves on both sides of the top, a slide rail placed on the bottom plate and placed in the slide grooves on both sides, a slide plate placed on the slide rails on both sides, a convex structure at the bottom and used for installing the hot stamping unit, the screen unit, the flexographic printing unit, the digital enhancement unit or the die-cutting unit, and a slide plate fixing part arranged on both sides of the bottom plate and placed at the front end and the rear end of the bottom plate.

[0006] A further technical solution of the utility model is: the head replacement unit also includes an axial adjustment base arranged at the rear end of the base plate.

[0007] A further technical solution of the utility model is: the skateboard fixing part includes a fixing seat arranged on the base plate, a pressure block arranged on the fixing seat and having a boss at the front end, a fastening screw arranged on the fixing seat and passing through the pressure block, and a fastening handle arranged on the fastening screw.

[0008] A further technical solution of the utility model is that the fixing seat is L-shaped and has a groove on the top, and the bottom of the pressing block has a protrusion that matches the groove.

[0009] A further technical solution of the utility model is: a positioning pin with a pointer pointing toward the bottom plate is arranged at the front end of one side of the slide plate, and a scale bar is arranged on the bottom plate corresponding to the position of the positioning pin.

[0010] A further technical solution of the utility model is that: the bottom plate is provided with a plurality of bottom plate fixing screw holes for fixing the bottom plate on the frame.

[0011] A further technical solution of the utility model is: the digital enhancement unit includes a frame, an inkjet assembly arranged on the frame, a traction assembly arranged on the frame, a laminating assembly arranged on the frame, a pre-curing device arranged on the frame, and a final curing device arranged on the frame; when working, the printed matter is introduced into the digital enhancement unit via the traction assembly, sprayed by the inkjet assembly, pre-cured by the pre-curing device after the spraying, laminated by the laminating assembly after the pre-curing, finally cured by the final curing device after the laminating, and exported after the completion.

[0012] A further technical solution of the utility model is that the digital enhancement unit also includes a cooling roller arranged on the frame and placed above the final curing device. When working, after the printed matter is laminated, it passes through the cooling roller and the final curing device at the same time for cooling and final curing.

[0013] A further technical solution of the utility model is: the inkjet assembly includes at least one inkjet cartridge arranged on a frame, and nozzles arranged on the inkjet cartridge, connected to the inkjet cartridge, with the nozzles facing the printed matter, and the number of nozzles being the same as that of the inkjet cartridge.

[0014] A further technical solution of the utility model is: the traction assembly includes a fixed traction roller arranged on the frame, a traction motor arranged on the outside of the frame and connected to the fixed traction roller, a traction frame hingedly arranged on the frame, a movable traction roller arranged on the traction frame through an axle and tangent to the fixed traction roller when working, and a traction cylinder arranged on the frame and connected to the traction frame with a telescopic rod; the coating assembly includes a fixed coating roller arranged on the frame, a coating frame hingedly arranged on the frame, a movable coating roller arranged on the coating frame through an axle and tangent to the fixed coating roller when working, and a coating cylinder arranged on the frame and connected to the coating frame with a telescopic rod.

[0015] A further technical solution of the utility model is: the cooling roller is a water-cooled roller, the digital enhancement unit also includes a plurality of paper feed rollers arranged on the frame for cooperating with the inkjet assembly, the traction assembly, the laminating assembly, the cooling roller, the pre-curing device and the final curing device; the digital enhancement unit also includes an operating table arranged on the frame, and an operating computer arranged on the operating table for controlling the operation of the digital enhancement unit; the digital enhancement unit also includes a cover plate for covering the frame; the digital enhancement unit also includes height adjustment feet arranged on the four corners of the bottom of the frame; the digital enhancement unit also includes a connecting plate arranged on the frame for connecting other units; the digital enhancement unit also includes a handle arranged on the cover plate for loading and unloading the cover plate.

[0016] The beneficial effects of the utility model are: this type of printing equipment realizes the change of printing direction through the head replacement unit, and also independently modularizes each unit, so that the printing equipment can be disassembled, reassembled or used alone. The digital enhancement unit produces similar process effects through inkjet components without the need for plate making, and only needs to provide corresponding PDF documents or other types of documents. All subsequent work is completed by software, which reduces the difficulty of manual operation and reduces plate making costs and a large amount of labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall structural diagram of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model;

[0018] Figure 2 It is a structural diagram of a head replacement unit of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model;

[0019] Figure 3 It is a structural diagram of a slide plate of a head replacement unit of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model;

[0020] Figure 4 It is an exploded view of a slide fixing portion of a head replacement unit of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model;

[0021] Figure 5 This is a fastening diagram of a slide fixing portion of a head replacement unit of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model;

[0022] Figure 6 It is a front planed structural diagram of a digital enhancement unit of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model;

[0023] Figure 7 It is a side structural diagram of a digital enhancement unit of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model;

[0024] Figure 8 It is a front view of a digital enhancement unit of a printing device with a replaceable head and a digital enhancement unit provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0025] Figure 1: 1 - bottom plate 2 - slide groove 3 - slide rail 4 - slide plate 5 - slide plate fixing part 6 - axial adjustment base 7 - fixing seat 8 - pressure block 9 - boss 10 - fastening screw 11 - fastening handle 12 - groove 13 - protrusion 14 - positioning pin 15 - scale bar 16 - bottom plate fixing screw hole 17 - head fixing screw hole 18 - unwinding unit 19 - winding unit 21 - hot stamping unit 22 - screen unit 23 - flexographic printing unit 24 - digital efficiency unit 25 - die cutting unit 26 - head replacement unit 101 - frame 102 - spray Ink assembly 103 - traction assembly 104 - laminating assembly 105 - cooling roller 106 - pre-curing device 107 - final curing device 108 - printed material 109 - fixed traction roller 110 - traction motor 111 - traction frame 112 - movable traction roller 113 - traction cylinder 114 - fixed laminating roller 115 - laminating frame 116 - movable laminating roller 117 - laminating cylinder 118 - paper feed roller 119 - operating table 120 - operating computer 121 - cover plate 122 - height adjustment foot 123 - connecting plate 124 - handle.

[0026] like Figure 1As shown in Figure 8, the utility model provides a printing device with a replaceable head and a digital enhancement unit, the printing device includes an unwinding unit 18 or a rewinding unit 19 arranged at the front end, a rewinding unit 19 or an unwinding unit 18 arranged at the rear end, and at least one hot stamping unit 21, a screen unit 22, a flexographic printing unit 23, a digital enhancement unit 24 or a die-cutting unit 25 arranged between the unwinding unit 18 and the rewinding unit 19, and a hot stamping unit 21, a screen unit 22, a flexographic printing unit 23, a digital enhancement unit 24 or a die-cutting unit 25 arranged between the hot stamping unit 21, the screen unit 22, the flexographic printing unit The printing device is provided with a head replacement unit 26 for changing the printing direction of each unit on the unit 23, the digital enhancement unit 24 or the die-cutting unit 25; the printing device is provided with an unwinding unit 18 at the front end and a rewinding unit 19 at the rear end, and the hot stamping unit 21, the screen unit 22, the flexographic printing unit 23, the digital enhancement unit 24 or the die-cutting unit 25 are placed in the middle to realize printing from left to right, and the rewinding unit 19 is provided at the opposite front end and the unwinding unit 18 is provided at the rear end, and the hot stamping unit 21, the screen unit 22, the flexographic printing unit 23, the digital enhancement unit 24 or the die-cutting unit 25 are placed in the middle to realize printing from left to right. 23. The digital enhancement unit 24 or the die-cutting unit 25 is placed in the middle to realize printing from right to left, and the hot stamping unit 21, the screen unit 22, the flexographic printing unit 23, the digital enhancement unit 24 or the die-cutting unit 25 can be used individually, in combination of two, in combination of three, in combination of four, or in online use, so that one printing device can be modified for printing according to different needs. When performing reversal printing, the printing direction can be changed by replacing the reverse hot stamping unit 21, the screen unit 22, the flexographic printing unit 23, the digital enhancement unit 24 or the die-cutting unit 25 through the head replacement unit 26, so that the printing device can meet the requirements of more customers for the printing direction, and realize the adjustment of printing from left to right and from right to left. The hot stamping unit 21, the screen unit 22, the flexographic printing unit 23 and the die-cutting unit 25 used in the printing device are all commonly used units in the field of printing equipment. Their specific structures and working principles are public technologies, so they are not described in this application.

[0027] like Figure 2As shown in Figure 5, the head replacement unit 26 includes a base plate 1 placed on the frame and having slide grooves 2 on both sides of the top, slide rails 3 placed on the base plate 1 and placed in the slide grooves 2 on both sides, a slide plate 4 placed on the slide rails 3 on both sides and having a convex bottom structure and used to install the hot stamping unit 21, the screen unit 22, the flexographic printing unit 23, the digital enhancement unit 24 or the die-cutting unit 25, and a slide plate fixing part 5 arranged on both sides of the base plate 1 and placed at the front end and the rear end of the base plate 1. The head replacement unit 26 can realize the replacement of heads of different printing directions of the printing equipment, so that the hot stamping unit 21, the screen unit 22, the flexographic printing unit 23, the digital enhancement unit 24 or the die-cutting unit 25 can realize bidirectional printing, and the heads with various functions are fixed on the slide plate 4 by means of bolts, and the slide plate 4 is placed on the slide rail 3, and the slide rail 3 is arranged in the slide groove 2 on the corresponding sides of the bottom plate 1, and the bottom plate 1 is installed on the frame, so that the head is installed, and the slide plate 4 is fixed by the slide plate fixing part 5 arranged on the bottom plate 1, and the slide plate fixing part 5 is at least four, which are respectively installed on the four sides of the bottom plate 1, and the slide plate 4 is fastened by fastening on all sides, which effectively prevents the machine from vibrating. The slide plate 4 is fixed on the two slide rails 3 and the slide plate 4 is smoothly installed on the two slide rails 3. The slide groove 2 on the bottom plate 1 is used to limit the slide rail 3 and provide sliding direction guidance for the slide rail 3. The height of the convex structure at the bottom of the slide plate 4 is less than the height of the slide rail 3 exposed on the top surface of the bottom plate 1, which not only plays a limiting and guiding role, but also reduces the friction between the slide plate 4 and the bottom plate 1.

[0028] like Figure 2 As shown, the head replacement unit 26 also includes an axial adjustment base 6 arranged at the rear end of the bottom plate 1. The axial adjustment base 6 is arranged at the rear end of the bottom plate 1 so that the head on the slide 4 can be fine-tuned when the device is working, so as to adjust it to the best working position and enable the printing device to achieve the best printing effect.

[0029] like Figure 4As shown, the slide fixing part 5 includes a fixing seat 7 arranged on the bottom plate 1, a pressing block 8 arranged on the fixing seat 7 and having a boss 9 at the front end, a fastening screw 10 arranged on the fixing seat 7 and penetrating the pressing block 8, and a fastening handle 11 arranged on the fastening screw 10. The slide fixing part 5 is installed on the bottom plate 1 through the fixing seat 7, the pressing block 8 is installed on the fixing seat 7 through the fastening screw 10, and the boss 9 on the pressing block 8 is placed on the slide rail 3. When fixing the slide plate 4, the fastening screw 10 is rotated through the fastening handle 11, so that the boss 9 on the pressing block 8 contacts the slide plate 4, and then the slide plate 4 is fastened to the bottom plate 1, so that the slide plate 4 can no longer move on the bottom plate 1, that is, the installation of the machine head is completed. When replacing the machine head, the fastening screw 10 is rotated through the fastening handle 11 to release the pressing block 8, so that the boss 9 is separated from the slide plate 4, and the slide plate 4 can be pulled out to replace the reverse printing machine head, and after completion, it can be installed by reverse engineering.

[0030] like Figure 4 As shown, the fixing seat 7 is L-shaped and has a groove 12 on the top, and the bottom of the pressing block 8 has a protrusion 13 that matches the groove 12. The fixing seat 7 is made into an L-shape in order to facilitate the horizontal installation of the fixing seat 7 during installation, so as to avoid slippage when fixing the slide plate 4 due to tilting, and the groove 12 is provided on the top to match the protrusion 13 at the bottom of the pressing block 8. At the same time, the cooperation between the groove 12 and the protrusion 13 facilitates the positioning of the pressing block 8 and provides guidance for the pressing block 8.

[0031] like Figure 5 As shown, a positioning pin 14 with a pointer pointing toward the bottom plate 1 is provided at the front end of one side of the slide plate 4, and a scale bar 15 is provided at the bottom plate 1 at a position corresponding to the positioning pin 14. The positioning pin 14 is provided on the slide plate 4 and the scale bar 15 is provided on the bottom plate 1 to play a positioning role when installing the slide plate 4, and also to facilitate the installation of the machine head, so as to achieve more accurate positioning and installation of the machine head.

[0032] The bottom plate 1 is provided with a plurality of bottom plate fixing screw holes 16 for fixing the bottom plate 1 on the frame. The slide plate 4 is provided with a plurality of head fixing screw holes 17 for fixing the head. The bottom plate fixing screw holes 16 are for facilitating fixing the bottom plate 1 on the frame so that the frame becomes a bidirectional printing device capable of replacing the head, and the head fixing screw holes 17 are for facilitating fixing the head of different printing directions on the slide plate 4 and then installing it on the printing device.

[0033] like Figure 6As shown in FIG. 8 , the digital enhancement unit 24 includes a frame 101, an inkjet assembly 102 disposed on the frame 101, a traction assembly 103 disposed on the frame 101, a laminating assembly 104 disposed on the frame 101, a pre-curing device 106 disposed on the frame 101, and a final curing device 107 disposed on the frame 101; when working, a printed matter 108 is introduced into the digital enhancement unit 24 via the traction assembly 103, sprayed by the inkjet assembly 102, and after spraying, the printed matter 108 is pre-cured by the pre-curing device 106, and after pre-curing, it is laminated by the laminating assembly 104, and after laminating, it is finally cured by the final curing device 107, and after completion, the printed matter 108 is exported. The pre-curing device 106 and the final curing device 107 used in the digital enhancement unit 24 are both commonly used in current printing equipment, so they will not be described in detail, and they can be used as long as their functions can be realized.

[0034] The digital enhancement unit also includes a cooling roller 105 arranged on the frame 101 and placed above the final curing device 107. When working, after the printed matter is laminated, it passes through the cooling roller 105 and the final curing device 107 for cooling and final curing; the cooling roller 105 is a water-cooled roller; the cooling roller 105 is commonly used in current printing equipment, so it will not be described in detail. As long as it can achieve its function, it can be used. The cooling roller 105 is used for some special materials. For example, heat shrink film that cannot be heated needs to use the cooling roller 105 for cooling, while if it is paper or high-temperature resistant film material, the cooling roller 105 is not needed, so the cooling roller 105 can be selectively installed according to different needs.

[0035] The inkjet assembly 102 includes at least one inkjet cartridge (not shown in the figure) arranged on the frame, and nozzles (not shown in the figure) arranged on the inkjet cartridge and connected to the inkjet cartridge, and the nozzles are facing the printed matter, and the number is the same as that of the inkjet cartridge. The inkjet assembly 102 places different materials, such as glue, ink, varnish, etc., through the inkjet cartridge, and corresponding nozzles are arranged at the bottom of the spraying box. The specific number of inkjet cartridges is installed in different numbers according to different needs. These nozzles are all controlled by the operating computer 120. When in use, the operating computer 120 controls different nozzles to work according to different printing needs to achieve the required printing requirements. This type of inkjet assembly 102 is a component that can be purchased on the market at present, because there is no need to repeat too much, as long as it is an inkjet assembly 102 that can achieve the required function, it can be used.

[0036] The traction assembly 103 includes a fixed traction roller 109 disposed on the frame 101, a traction motor 110 disposed outside the frame 101 and connected to the fixed traction roller 109, a traction frame 111 hingedly disposed on the frame 101, a movable traction roller 112 disposed on the traction frame 111 through an axle and tangent to the fixed traction roller 109 during operation, and a traction cylinder 113 disposed on the frame 101 and connected to the traction frame 111 through a telescopic rod. The traction assembly 103 is responsible for traction of the printed matter 108 to be introduced into the digital enhancement unit 24, and the traction force of the movable traction roller 112 is controlled by the traction cylinder 113, so that the traction assembly 103 can be used for traction of various printed matters 108, and the printed matter 108 will not be damaged or the traction force is insufficient due to excessive or insufficient traction force.

[0037] The film coating assembly 104 includes a fixed film coating roller 114 arranged on the frame 101, a film coating frame 115 hingedly arranged on the frame 101, a movable film coating roller 116 arranged on the film coating frame 115 through an axle and tangent to the fixed film coating roller 114 when working, and a film coating cylinder 117 arranged on the frame 101 and connected to the film coating frame 115 by a telescopic rod. The film coating assembly 104 controls whether the film coating assembly 104 performs film coating through the film coating cylinder 117. When film coating is not required, the film coating cylinder 117 controls the movable film coating roller 116 not to participate in the work, and the film coating assembly 104 can also control the film coating strength through the film coating cylinder 117, so that the film coating assembly 104 can perform film coating work according to different requirements.

[0038] The digital enhancement unit 24 further includes a plurality of paper feed rollers 118 disposed on the frame 101 for use with the inkjet assembly 102, the traction assembly 103, the laminating assembly 104, the cooling roller 105, the pre-curing device 106 and the final curing device 107. The plurality of paper feed rollers 118 are disposed on the frame 101 to limit the paper feed direction of the printed matter 108 and to ensure that the printed matter 108 has sufficient paper feed space.

[0039] The digital enhancement unit 24 also includes an operation table 119 disposed on the frame 101, and an operation computer 120 disposed on the operation table 119 for controlling the operation of the digital enhancement unit. The digital enhancement unit 24 is equipped with the operation computer 120 for convenient operation. When the digital enhancement unit 24 is required to perform hot stamping, the required pattern is imported into the operation computer 120, and the inkjet assembly 102 is adjusted to spray glue using software. The glue is semi-solidified but still sticky after passing through the pre-curing device 106. The hot stamping film and the printed matter 108 sprayed with glue are pressed together through the laminating assembly 104 according to the laminating route. The sticky glue sticks the coating on the hot stamping film to form a hot stamping pattern. The printed matter 108 is cooled by water through the cooling roller 105. Finally, the product 108 is cured by the final curing device 107 to complete the hot stamping of the printed matter 108; when the screen is printed, the required pattern is imported into the operating computer 120, and the software is used to adjust the inkjet component 102 to spray a large amount of ink to form an ink layer with a thicker thickness than ordinary printing, thereby increasing the concave-convex or three-dimensional effect of the printed matter 108, increasing the added value of the printed matter 108, and completing the screen printing of the printed matter 108; when glazing is performed, the required pattern is imported into the operating computer 120, and the software is used to adjust the inkjet component 102 to spray varnish at a specified position to complete the varnish printing of the printed matter 108.

[0040] The digital enhancement unit 24 further includes a cover plate 121 for covering the rack 101. The digital enhancement unit 24 further includes a handle 124 provided on the cover plate 121 for loading and unloading the cover plate 121. By providing the cover plate 121, all components of the entire digital enhancement unit 24 can be covered in the rack 101, effectively preventing dust and the like from entering the interior of the device. In addition, the handle 124 is provided on the cover plate 121 to facilitate the installation of the cover plate 121 and the subsequent maintenance and disassembly.

[0041] The digital enhancement unit 24 also includes height adjustment feet 122 provided at the four corners of the bottom of the frame 101. The height adjustment feet 122 are provided on the frame 101 to facilitate the height adjustment of the entire digital enhancement unit 24 so that it can be better used in conjunction with other printing devices. In addition, the digital enhancement unit 24 can be horizontally adjusted by adjusting the height adjustment feet 122 so that the digital enhancement unit 24 can be used in the best state.

[0042] The digital enhancement unit 24 also includes a connection plate 123 disposed on the frame 101 for connecting with other units. The connection plate 123 is disposed on the frame 101 to facilitate the connection between the digital enhancement unit 24 and other printing devices, so that the digital enhancement unit 24 and other printing devices become one.

[0043] This type of printing equipment can change the printing direction through the head replacement unit. In addition, each unit is independently modularized, so that the printing equipment can be disassembled, reassembled or used alone. The digital enhancement unit uses inkjet components to produce similar process effects without plate making. Only the corresponding PDF documents or other types of documents need to be provided. All subsequent work is completed by software, which reduces the difficulty of manual operation and reduces the plate making cost and a large amount of labor cost.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A printing device with a replaceable head and a digital enhancement unit, characterized in that: The printing equipment includes an unwinding unit or a rewinding unit arranged at the front end, a rewinding unit or an unwinding unit arranged at the rear end, at least one hot stamping unit, screen unit, flexographic printing unit, digital enhancement unit or die-cutting unit arranged between the unwinding unit and the rewinding unit, and a head replacement unit arranged on the hot stamping unit, screen unit, flexographic printing unit, digital enhancement unit or die-cutting unit for changing the printing direction of each unit; the head replacement unit includes a bottom plate placed on the frame and having slide grooves on both sides of the top, a slide rail placed on the bottom plate and placed in the slide grooves on both sides, a slide plate placed on the slide rails on both sides, a convex structure at the bottom and used to install the hot stamping unit, screen unit, flexographic printing unit, digital enhancement unit or die-cutting unit, and a slide plate fixing part arranged on both sides of the bottom plate and placed at the front end and rear end of the bottom plate.

2. The printing device according to claim 1, characterized in that The head replacement unit also includes an axial adjustment base arranged at the rear end of the base plate.

3. The printing device according to any one of claims 1 to 2, characterized in that: The sliding plate fixing part comprises a fixing seat arranged on the bottom plate, a pressing block arranged on the fixing seat and having a boss at the front end, a fastening screw arranged on the fixing seat and passing through the pressing block, and a fastening handle arranged on the fastening screw.

4. The printing device according to claim 3, characterized in that: The fixing seat is L-shaped and has a groove on the top, and the bottom of the pressing block has a protrusion that matches the groove.

5. The printing device according to claim 4, characterized in that A positioning pin with a pointer pointing toward the bottom plate is arranged at the front end of one side of the slide plate, and a scale bar is arranged on the bottom plate corresponding to the position of the positioning pin.

6. The printing device according to claim 1, characterized in that The digital enhancement unit includes a frame, an inkjet assembly arranged on the frame, a traction assembly arranged on the frame, a laminating assembly arranged on the frame, a pre-curing device arranged on the frame, and a final curing device arranged on the frame and placed at the bottom of the cooling roller; when working, the printed matter is introduced into the digital enhancement unit through the traction assembly, sprayed by the inkjet assembly, pre-cured by the pre-curing device after the spraying is completed, laminated by the laminating assembly after the pre-curing is completed, and finally cured by the final curing device after the laminating is completed, and the printed matter is exported after completion.

7. The printing device according to claim 6, characterized in that The digital enhancement unit also includes a cooling roller arranged on the frame and placed above the final curing device. When the printed matter is in operation, after lamination, it passes through the cooling roller and the final curing device at the same time for cooling and final curing.

8. The printing device according to claim 7, characterized in that: The inkjet assembly includes at least one inkjet cartridge arranged on a frame, and nozzles arranged on the inkjet cartridge, connected to the inkjet cartridge, with the nozzles facing the printed matter, and the number of nozzles being the same as that of the inkjet cartridge.

9. The printing device according to claim 8, characterized in that The traction assembly includes a fixed traction roller arranged on the frame, a traction motor arranged on the outside of the frame and connected to the fixed traction roller, a traction frame hingedly arranged on the frame, a movable traction roller arranged on the traction frame through an axle and tangent to the fixed traction roller when working, and a traction cylinder arranged on the frame and connected to the traction frame with a telescopic rod; the coating assembly includes a fixed coating roller arranged on the frame, a coating frame hingedly arranged on the frame, a movable coating roller arranged on the coating frame through an axle and tangent to the fixed coating roller when working, and a coating cylinder arranged on the frame and connected to the coating frame with a telescopic rod.

10. The printing device according to claim 9, characterized in that The cooling roller is a water-cooled roller, and the digital enhancement unit also includes a number of paper feed rollers arranged on the frame for cooperating with the inkjet assembly, the traction assembly, the laminating assembly, the cooling roller, the pre-curing device and the final curing device; the digital enhancement unit also includes an operating table arranged on the frame, and an operating computer arranged on the operating table for controlling the operation of the digital enhancement unit; the digital enhancement unit also includes a cover plate for covering the frame; the digital enhancement unit also includes height adjustment feet arranged on the four corners of the bottom of the frame; the digital enhancement unit also includes a connecting plate arranged on the frame for connecting with other units; the digital enhancement unit also includes a handle arranged on the cover plate for loading and unloading the cover plate.

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