Digital printing equipment

Abstract

The digital printing equipment comprises a rack, a supporting table is fixedly connected to the inner wall of the bottom of the rack, a printing platform is installed on the top of the supporting table, and two feeding Y shafts are installed between the inner wall of the front side and the inner wall of the rear side of the rack. By arranging a series of structures, left-right and front-back bidirectional stable driving of the portal frame can be formed for the printing trolley, compared with single-side driving, the requirement for the rigidity of a frame is low, the consistency and stability of movement of the power end and the follow-up end are guaranteed, the printing trolley does not need to independently add Y-axis movement, the structure is relatively simple, the size is relatively small, and the cost is low. In addition, the nozzles in the printing trolley do not need to be arranged in a full-width mode, the nozzles can be arranged in a single row or multiple rows according to the printing width requirement, the printing nozzles are arranged flexibly, Y-axis stepping scanning printing can be achieved, the printing effect on heavy-ink-amount graphs is good, deviation correction, positioning and swing angle compensation can be conducted on a roll material base material, and the consistency of the patterns printed every time is improved.

Description

Technical Field

[0001] The invention relates to the technical field of UV printing, in particular to digital printing equipment. Background Art

[0002] In the current digital UV printing industry, it is common to use flatbed scanners, UV photo machines and onepass digital label machines in the production of advertising, packaging, labeling and other industries; the flatbed scanner is a single substrate laid flat on the suction platform, the printing carriage reciprocates on the beam to scan and print, and the entire beam gap is stepped and fed, which is suitable for single sheets, and can achieve high-precision and heavy ink graphic printing, please refer to CN211730683U a flatbed printer; the UV photo machine can use a single sheet or roll as the substrate, the printing carriage reciprocates on the beam to scan and print, and the printing substrate gap is stepped and fed, please refer to CN206154904U a spray printer; the onepass digital label machine uses roll material as the printing substrate, the substrate is continuously fed on the printing base, the printing unit does not move, and prints directly on the substrate, please refer to CN117754974A a digital printing device.

[0003] Prior art CN214137909U proposes a piezoelectric inkjet digital printer, which is applied to UV printing of roll substrates. The printing mechanism spans the printing platform and connects the driving X-axis and the auxiliary guide rail end to form a gantry frame structure. The unilateral power drive of the X-axis causes the X-axis of the printing mechanism to reciprocate. The following shortcomings exist when it is used: 1. The unilateral drive has relatively high rigidity requirements for the printing mechanism frame, and the movement consistency between the power end and the follower end is difficult to ensure; 2. The printing mechanism is arranged with a moving double Y-axis, and the Y-axis only moves in a small range to meet the printing point insertion requirements. The nozzles inside the printing structure are arranged in full width. The large number of nozzles increases the requirements for nozzle splicing, and the cost will increase significantly; with respect to the current structural layout of the printing mechanism, the Y-axis step scanning printing method cannot be realized, and the printing effect of UV heavy ink graphics is not very good. The current printing technology requires Y-axis step scanning printing for UV heavy ink graphics to achieve good results; in view of this, the present application proposes a digital printing device. Summary of the invention

[0004] The object of the present invention is to provide a digital printing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a digital printing device, comprising a frame, a support platform is fixedly connected to the bottom inner wall of the frame, a printing platform is installed on the top of the support platform, two feeding Y axes are installed between the front and rear inner walls of the frame, the tops of the moving ends of the two feeding Y axes are fixedly connected to the same horizontal X axis, a printing carriage is installed on the front side of the moving end of the horizontal X axis, a control platform assembly is installed on the right rear side of the top of the frame, the control platform assembly includes a PLC controller, and the printing platform, the printing carriage, the horizontal X axis and the feeding Y axis are all electrically connected to and controlled by the PLC controller;

[0006] A reel is installed between the front and rear inner walls of the frame and is located on the left side of the support platform, a reel is installed between the front and rear inner walls of the frame and is located on the right side of the support platform, a deviation corrector, a double-sided dust collector and a traction mechanism are installed between the front and rear inner walls of the frame, the double-sided dust collector and the traction mechanism are respectively located on the left and right sides of the support platform, the deviation corrector is located above the reel, a coil substrate with one end fixed thereto is wound around the outside of the reel, the other end of the coil substrate passes through the deviation corrector, the double-sided dust collector and the traction mechanism in sequence and is wound and fixed around the outside of the reel, a detection platform is installed above the reel between the front and rear inner walls of the frame, the coil substrate is in movably contact with the top of the printing platform and the top of the detection platform, and the reel, the reel, the deflection corrector, the double-sided dust collector and the traction mechanism are all electrically connected to and controlled by the PLC controller;

[0007] A positioning camera component 1 and a positioning camera component 2 electrically connected to the PLC controller are installed between the front and rear inner walls of the frame, the printing platform is located between the positioning camera component 1 and the positioning camera component 2, and a moisturizing tray is fixedly installed between the front and rear inner walls of the frame, the moisturizing tray is located on the right side of the deviation corrector and cooperates with the bottom of the printing carriage.

[0008] Preferably, a material storage shaft located on the left side of the winder is installed between the front and rear inner walls of the frame, and the material storage shaft is composed of a plurality of rotating shafts staggered up and down between the front and rear inner walls of the frame, and the rolled material substrate passes around the outside of the rotating shaft and is in active contact with the outside of the rotating shaft.

[0009] Preferably, the transverse X-axis and the two feed Y-axes form a gantry structure.

[0010] Preferably, the printing platform includes a platform surface, a platform suction chamber arranged on the platform surface, an arc guide roller installed on the right side of the bottom of the platform surface, and a swing angle drive motor assembly installed between the top of the support and the left side of the bottom of the platform surface. Transition rollers that are rotatably installed on both sides of the platform surface are in active contact with the bottom of the roll substrate. The arc guide roller includes an arc guide roller fixedly connected to the right side of the top of the support, and two sliders are slidably installed on the arc guide roller. The top of the slider is fixedly connected to the right side of the bottom of the platform surface. A support block is fixedly connected to the left side of the top of the support, and the top of the support block is in sliding contact with the left side of the bottom of the platform surface.

[0011] Preferably, the swing angle drive motor assembly includes a fixed seat fixedly connected to the top of the support platform, a servo motor 1 fixedly installed on one side of the fixed seat, a screw rod fixedly connected to the end of the output shaft of the servo motor 1 and rotatably connected to the fixed seat through a bearing, a connecting seat threadedly sleeved on the outside of the screw rod, and a connecting pin rotatably installed on the connecting seat, the connecting pin is rotatably installed with the bottom of the platform surface, a T-shaped guide rail is installed on the fixed seat, the connecting seat is slidably installed on the T-shaped guide rail, and the servo motor 1 is electrically connected to the PLC controller.

[0012] Preferably, the positioning camera assembly 1 and the positioning camera assembly 2 both include a fixing plate fixedly connected between the front and rear inner walls of the frame, a motion module is fixedly installed on the top of the two fixing plates, a servo motor 2 whose output shaft is fixedly connected to the corresponding motion module driving end is installed on the top of the fixing plate, a camera and a light source are fixedly installed on the top of the moving end of the two motion modules, the light source is mounted on the outside of the corresponding camera, and the camera, the light source and the servo motor 2 are all electrically connected to and controlled by the PLC controller.

[0013] Preferably, two first guide wheels rotatably installed between the front and rear inner walls of the frame are provided below the deviation corrector, and the coil substrate moves around the outside of the two first guide wheels. Second guide wheels rotatably installed between the front and rear inner walls of the frame are provided on both sides of the double-sided dust collector. There are two second guide wheels on the left side, and the coil substrate moves around the outside of the three second guide wheels.

[0014] Preferably, the transverse X-axis and the two feed Y-axes are driven by branch line motors, and the printing action is achieved by positioning with a metal grating ruler.

[0015] Preferably, a plurality of suction holes which are all connected to the interior of the platform suction cavity are arranged on the top of the platform surface.

[0016] Preferably, the two transition rollers are located between two cameras, and the lenses of the cameras are arranged toward the corresponding transition rollers.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The lateral X-axis and two feed Y-axes can form a bidirectional drive mode of the gantry, which is driven by the two feed Y-axes on both sides. Compared with the single-sided drive, the rigidity requirement of the frame is lower, and the consistency and stability of the movement of the power end and the follower end can be ensured. The roll-to-roll digital printing of the step-by-step scanning printing application can be realized, and the printing carriage does not need to add a separate Y-axis movement. The structure is relatively simple and the size is relatively small.

[0019] 2. The gantry is driven left and right and front and back in a bidirectional manner through the horizontal X-axis and two feed Y-axes, which also makes it unnecessary to arrange the print heads inside the printing carriage in full width. They can be arranged in single or multiple rows according to the printing width requirements. The print heads are arranged flexibly, and Y-axis step scanning printing can be realized, which has a good printing effect on heavy ink graphics;

[0020] 3. Through the set deviation corrector, camera and printing platform, the initial deviation correction, detection positioning and swing angle compensation correction of the roll material substrate can be realized in turn, and the effects of positioning material pulling to prevent deviation and swing angle compensation can be achieved. The swing angle compensation of the printing platform and the printing position compensation of the printing carriage can ensure the consistency of the pattern printed each time.

[0021] The present invention is provided with a series of structures, which can form a bidirectional stable drive for the gantry left and right and front and back for the printing carriage. Compared with the unilateral drive, the rigidity requirement for the frame is lower, and the consistency and stability of the movement of the power end and the follower end are guaranteed. The printing carriage does not need to add Y-axis movement separately. The structure is relatively simple and the size is relatively small. Moreover, the nozzles inside the printing carriage do not need to be arranged full-width. They can be arranged in a single row or in multiple rows according to the printing width requirements. The arrangement of the printing nozzles is relatively flexible, and Y-axis step scanning printing can be realized. The printing effect of heavy ink graphics is good, and the roll substrate can be corrected, positioned and compensated for the swing angle, thereby improving the consistency of each printed pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural schematic diagram of a digital printing device proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of a front cross-sectional structure of a digital printing device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a printing platform of a digital printing device proposed by the present invention when viewed from above;

[0025] Figure 4 This is a schematic diagram of the main cross-sectional structure of a printing platform of a digital printing device proposed by the present invention;

[0026] Figure 5A schematic diagram of the three-dimensional structure of a positioning camera component 1 or a positioning camera component 2 of a digital printing device proposed by the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of a swing angle drive motor assembly of a digital printing device proposed by the present invention.

[0028] In the figure: 1. frame; 101. support platform; 2. printing platform; 201. platform surface; 202. platform suction chamber; 203. arc guide roller; 205. transition roller; 206. swing angle drive motor assembly; 2061. fixed seat; 2062. T-shaped guide rail; 2063. connecting seat; 2064. connecting pin; 2065. servo motor one; 2066. lead screw; 3. horizontal X-axis; 4. printing carriage; 5. unwinder; 6. winder; 7. deviation corrector; 8. double-sided dust collector; 9. storage shaft; 10. traction mechanism; 11. feed Y-axis; 12. moisturizing tray; 13. positioning camera assembly one; 1301. fixed plate; 1302. motion module; 1303. servo motor two; 1304. light source; 1305. camera; 14. positioning camera assembly two; 15. detection platform. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1

[0031] like Figures 1 to 6 As shown, a digital printing device proposed in this embodiment includes a frame 1, a support 101 is fixedly connected to the bottom inner wall of the frame 1, a printing platform 2 is installed on the top of the support 101, two feed Y axes 11 are installed between the front and rear inner walls of the frame 1, the tops of the moving ends of the two feed Y axes 11 are fixedly connected to the same horizontal X axis 3, a printing carriage 4 is installed on the front side of the moving end of the horizontal X axis 3, a control platform component is installed on the right rear side of the top of the frame 1, and the control platform component includes a PLC controller, the printing platform 2, the printing carriage 4, the horizontal X axis 3 and the feed Y axis 11 are all electrically connected to the PLC controller and controlled by the PLC controller; the set horizontal X axis 3 and the two feed Y axes 11 are used to be controlled by the PLC controller to control the left and right and front and back movement of the printing carriage, so as to perform step-by-step printing, the horizontal X axis 3 and the two feed Y axes 11 form a gantry structure, the horizontal X axis 3 and the two feed Y axes 11 are all driven by branch line motors, and the printing action is realized by positioning with a metal grating ruler;

[0032] An unwinder 5 located on the left side of the support 101 is installed between the front and rear inner walls of the frame 1, a reel 6 located on the right side of the support 101 is installed between the front and rear inner walls of the frame 1, a deviation corrector 7, a double-sided dust collector 8 and a traction mechanism 10 are installed between the front and rear inner walls of the frame 1, the double-sided dust collector 8 and the traction mechanism 10 are respectively located on the left and right sides of the support 101, the deviation corrector 7 is located above the unwinder 5, a coil substrate with one end fixed thereto is wound around the outside of the unwinder 5, the other end of the coil substrate passes through the deviation corrector 7, the double-sided dust collector 8 and the traction mechanism 10 in sequence and is wound and fixed around the outside of the reel 6, a detection platform 15 located above the reel 6 is installed between the front and rear inner walls of the frame 1, and the coil substrate and the printing platform 2 The top of the machine frame 1 is in active contact with the top of the detection platform 15. The winder 6, unwinder 5, deviation corrector 7, double-sided dust collector 8 and traction mechanism 10 are all electrically connected to and controlled by the PLC controller. Two first guide wheels rotatably mounted between the front and rear inner walls of the frame 1 are provided below the deviation corrector 7. The coil substrate movably bypasses the outsides of the two first guide wheels. Second guide wheels rotatably mounted between the front and rear inner walls of the frame 1 are provided on both sides of the double-sided dust collector 8. There are two second guide wheels on the left side. The coil substrate movably bypasses the outsides of the three second guide wheels. The winder 6 and unwinder 5 are used to be controlled by the PLC controller to rewind and release the coil substrate respectively, so as to realize automatic transportation of the coil substrate.

[0033] A positioning camera component 13 and a positioning camera component 2 14 electrically connected to the PLC controller are installed between the front and rear inner walls of the frame 1, and the printing platform 2 is located between the positioning camera component 13 and the positioning camera component 2 14. A moisturizing tray 12 is fixedly installed between the front and rear inner walls of the frame 1. The moisturizing tray 12 is located on the right side of the deviation corrector 7 and cooperates with the bottom of the printing carriage 4; the positioning camera component 13 and the positioning camera component 2 14 are respectively arranged to take pictures and position the edges of the coil substrate from both sides, and the moisturizing tray 12 is arranged to moisturize the printing nozzle at the bottom of the printing carriage 4 when the printing carriage 4 moves to its top position.

[0034] Specifically, a storage shaft 9 located on the left side of the winder 6 is installed between the front and rear inner walls of the frame 1. The storage shaft 9 is composed of a plurality of rotating shafts that are staggered up and down between the front and rear inner walls of the frame 1. The coil substrate passes around the outside of the rotating shaft and is in active contact with the outside of the rotating shaft. The rotating shaft located at the lower part is a rotating shaft that can move up and down, and can move upward when the coil substrate is pulled.

[0035] Furthermore, the printing platform 2 includes a platform surface 201, a platform suction chamber 202 arranged on the platform surface 201, an arc guide roller 203 installed on the right side of the bottom of the platform surface 201, and a swing angle drive motor assembly 206 installed between the top of the support 101 and the left side of the bottom of the platform surface 201. The top of the platform surface 201 is provided with a plurality of suction holes that are connected to the inside of the platform suction chamber 202. Transition rollers 205 that are in active contact with the bottom of the coil substrate are rotatably installed on both sides of the platform surface 201. The arc guide roller 203 includes a fixed connection to the support 101. There is an arc-shaped guide roller on the right side of the top, and two sliders are slidably installed on the arc-shaped guide roller. The top of the slider is fixedly connected to the right side of the bottom of the platform surface 201. A support block is fixedly connected to the left side of the top of the support platform 101, and the top of the support block is in sliding contact with the left side of the bottom of the platform surface 201. The two transition rollers 205 are both located between the two cameras 1305, and the lenses of the cameras 1305 are set toward the corresponding transition rollers 205; the set platform suction chamber 202 cooperates with the suction hole to firmly adsorb the roll substrate on the printing platform 2 when connecting to an external suction device to provide suction force.

[0036] Furthermore, the swing angle drive motor assembly 206 includes a fixing seat 2061 fixedly connected to the top of the support 101, a servo motor 2065 fixedly installed on one side of the fixing seat 2061, a screw rod 2066 fixedly connected to the end of the output shaft of the servo motor 2065 and rotatably connected to the fixing seat 2061 through a bearing, a connecting seat 2063 threadedly sleeved on the outside of the screw rod 2066, and a connecting pin 2064 rotatably installed on the connecting seat 2063, wherein a thread hole threadedly connected to the screw rod 2066 is opened on the right side of the connecting seat 2063, and the screw rod 2066 and the thread hole are connected by the screw rod 2066. The threaded connection relationship facilitates the effect of driving the connecting seat 2063 to move when the screw rod 2066 rotates. The connecting pin 2064 is rotatably installed with the bottom of the platform surface 201. A T-shaped guide rail 2062 is installed on the fixed seat 2061. The connecting seat 2063 is slidably installed on the T-shaped guide rail 2062. The servo motor 1 2065 is electrically connected to the PLC controller; the set fixed seat 2061, the servo motor 1 2065, the screw rod 2066, the connecting seat 2063, the connecting pin 2064 and the T-shaped guide rail 2062 cooperate to position the camera assembly 13 and the positioning camera assembly 2 14. After taking photos and positioning the edge of the coil substrate from both sides, the positioning camera component 13 and the positioning camera component 2 14 calculate the deviation data from the initial calibration position by positioning the edge and the mark point. The CCD background calculates the angle of the material and gives it to the PLC controller of the control platform component mechanism and the position deviation data of the mark point to the board that controls the printing carriage 4. By receiving the deviation data of the CCD, the PLC controller controls the servo motor 1 2065 to start accordingly, and uses the servo motor 1 2065 to drive the screw rod 2066 to rotate, so as to drive the connecting seat 2063 Moving back and forth, the connecting seat 2063 drives the platform surface 201 to move back and forth through the connecting pin 2064, and the platform surface 201 performs rotational swing angle compensation on the top of the support 101 through the arc guide roller 203, and the printing carriage 4 performs printing starting position compensation; wherein the function of the printing platform swing angle function is to eliminate the angle deviation generated after each stepping and pulling of the material; at the same time, the positioning of the positioning camera component 1 13 and the positioning camera component 2 14 are combined in the direction of pulling and feeding the material, and the initial printing position deviation compensation and the deviation compensation of the pulling control are developed in the printing control of the printing carriage 4 to ensure that the spacing of the printed graphics is consistent each time.

[0037] Furthermore, the positioning camera assembly 1 13 and the positioning camera assembly 2 14 both include a fixing plate 1301 fixedly connected between the front and rear inner walls of the frame 1, the tops of the two fixing plates 1301 are fixedly installed with motion modules 1302, the tops of the fixing plates 1301 are installed with servo motors 1303 whose output shafts are fixedly connected to the driving ends of the corresponding motion modules 1302, the tops of the moving ends of the two motion modules 1302 are fixedly installed with cameras 1305 and light sources 1304, the light sources 1304 are sleeved on the outer sides of the corresponding cameras 1305, and the cameras 1305, The light source 1304 and the servo motor 1303 are both electrically connected to the PLC controller and controlled by the PLC controller; the motion module 1302 and the servo motor 1303 are set to cooperate to drive and adjust the front and rear positions of the corresponding camera 1305, and the two groups of cameras 1305 are used to calculate the deviation data from the initial calibration position by positioning the edge and the mark point, and the CCD background is used to calculate the angle of the material The swing angle data is given to the PLC controller of the control platform component mechanism and the position deviation data of the mark point is given to the board that controls the printing carriage 4.

[0038] In this embodiment, when in use, the reel 6 and the unreel 5 are used to synchronously reel and release the coil substrate respectively, so as to realize the automatic transportation of the coil substrate on the top of the printing platform 2, wherein the coil substrate passes through the deflection corrector 7, and the deflection corrector 7 corrects the deflection and guides the material by sensing the edge of the coil substrate. The coil substrate passes through the first guide wheel and the second guide wheel in turn and flows through the double-sided dust collector 8 to remove dust and dirt on the front and back of the coil substrate, and flows through the printing platform 2 through the transition roller 205. Since the positioning camera component 1 13 and the positioning camera component 2 14 are respectively provided on both sides of the printing platform 2, the cameras 1305 of the two are used to calculate the deviation data from the initial calibration position by positioning the edge of the coil substrate and the mark point, and the angle deflection angle data of the material is calculated by the CCD background to be given to the PLC controller of the control platform component mechanism and the position deviation data of the mark point is given to the board card controlling the printing carriage 4, and the CCD is received by the CCD The PLC controller controls the servo motor 2065 to start accordingly based on the deviation data, and uses the servo motor 2065 to drive the screw rod 2066 to rotate, so as to drive the connecting seat 2063 to move forward and backward. The connecting seat 2063 drives the platform surface 201 to move forward and backward through the connecting pin 2064. Since the arc guide roller 203 is installed on the right side of the bottom of the printing platform 2, and the other end is only used as a plane support, the end of the plane support can make a rotational movement along the center of the arc guide roller. Therefore, at this time, the platform surface 201 is rotated and swung at the top of the support 101 through the arc guide roller 203. The printing carriage 4 performs a printing starting position compensation; the function of the printing platform swing angle is to eliminate the angle deviation generated after each stepping and pulling of the material; at the same time, the positioning of the two cameras 1305 is combined in the direction of pulling and feeding the material, and the initial printing position deviation compensation and the deviation compensation of the pulling control are developed in the printing control of the printing carriage 4 to ensure that the spacing of the printed graphics is consistent each time;

[0039] The platform suction chamber 202 of the printing platform 2 cooperates with the suction hole to provide suction force when connected to an external suction device, so that the coil substrate is firmly adsorbed on the printing platform 2 during printing. After printing is completed, the printing carriage 4 is controlled to move to the top of the moisturizing tray 12, and the moisturizing tray 12 is used to moisturize the print head at the bottom of the printing carriage 4 to maintain the state of the print head; the storage shaft 9 arranged on one side of the detection platform 15 is used. When the product needs to be tested, when the reel 6 is controlled to rotate forward, the lower part of the storage shaft 9 is pulled upward, and the coil substrate on the storage shaft 9 enters the reel 6 for reeling, which will not affect the material of the printing platform 2;

[0040] The gantry structure is formed by the transverse X-axis 3 and the two feed Y-axes 11, so that the gantry can be driven in a left-right and front-to-back bidirectional manner, and the front and back are driven by the two feed Y-axes 11 on both sides. Compared with the unilateral drive, the rigidity requirement for the frame is lower, and the consistency and stability of the movement of the power end and the follower end can be ensured. The printing carriage 4 is fixed on the front side of the moving end of the transverse X-axis 3 to make a reciprocating motion, and the material feeding direction is consistent with the X-axis direction of the printing carriage 4, so that roll-to-roll digital printing for step-by-step scanning printing applications can be realized, and the printing carriage 4 does not need to increase the Y-axis movement separately, the structure is relatively simple, the size is relatively small, and the printing nozzles inside the printing carriage 4 do not need to be arranged full-width, and can be arranged in a single row or multiple rows according to the printing width requirements. The arrangement of the printing nozzles is relatively flexible, and Y-axis step-by-step scanning printing can be realized, and the printing effect of heavy ink graphics is good; in addition, the use of the corrector 7 and the camera 1305 to cooperate with the swing angle movement of the driving printing platform can achieve the effects of positioning the material to prevent deviation and using the printing platform 2 to perform swing angle compensation.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A digital printing device, comprising a frame (1), characterized in that: A support platform (101) is fixedly connected to the inner wall at the bottom of the frame (1), a printing platform (2) is installed on the top of the support platform (101), two feeding Y axes (11) are installed between the front and rear inner walls of the frame (1), the tops of the moving ends of the two feeding Y axes (11) are fixedly connected to the same transverse X axis (3), a printing carriage (4) is installed on the front side of the moving end of the transverse X axis (3), a control platform component is installed on the right rear side of the top of the frame (1), the control platform component includes a PLC controller, and the printing platform (2), the printing carriage (4), the transverse X axis (3) and the feeding Y axis (11) are all electrically connected to the PLC controller; An unwinder (5) is installed between the front and rear inner walls of the frame (1) and is located on the left side of the support platform (101); a rewinder (6) is installed between the front and rear inner walls of the frame (1) and is located on the right side of the support platform (101); a deviation corrector (7), a double-sided dust collector (8) and a traction mechanism (10) are installed between the front and rear inner walls of the frame (1); the double-sided dust collector (8) and the traction mechanism (10) are located on the left and right sides of the support platform (101), respectively; the deviation corrector (7) is located above the unwinder (5); and a rewinder (6) is installed around the outer side of the unwinder (5) and is wound around one end thereof. A fixed coil substrate, the other end of the coil substrate sequentially passes through a deflection corrector (7), a double-sided dust collector (8) and a traction mechanism (10) and is wound and fixed on the outside of a reel (6); a detection platform (15) located above the reel (6) is installed between the front and rear inner walls of the frame (1); the coil substrate is in active contact with the top of the printing platform (2) and the top of the detection platform (15); the reel (6), the unwinder (5), the deflection corrector (7), the double-sided dust collector (8) and the traction mechanism (10) are all electrically connected to a PLC controller; A positioning camera assembly 1 (13) and a positioning camera assembly 2 (14) electrically connected to a PLC controller are installed between the front and rear inner walls of the frame (1); the printing platform (2) is located between the positioning camera assembly 1 (13) and the positioning camera assembly 2 (14); a moisturizing tray (12) is fixedly installed between the front and rear inner walls of the frame (1); the moisturizing tray (12) is located on the right side of the deviation corrector (7) and cooperates with the bottom of the printing carriage (4).

2. A digital printing device according to claim 1, characterized in that: A material storage shaft (9) is installed between the front and rear inner walls of the frame (1) and is located on the left side of the reel (6). The material storage shaft (9) is composed of a plurality of rotating shafts that are staggered up and down and installed between the front and rear inner walls of the frame (1). The coiled material base material passes around the outside of the rotating shaft and is in active contact with the outside of the rotating shaft.

3. A digital printing device according to claim 1, characterized in that: The transverse X-axis (3) and the two feeding Y-axes (11) form a gantry structure.

4. A digital printing device according to claim 1, characterized in that: The printing platform (2) comprises a platform surface (201), a platform suction chamber (202) arranged on the platform surface (201), an arc guide roller (203) installed on the right side of the bottom of the platform surface (201), and an angular swing drive motor assembly (206) installed between the top of the support platform (101) and the left side of the bottom of the platform surface (201); transition rollers (205) rotatably mounted on both sides of the platform surface (201) and in active contact with the bottom of the coiled material substrate; the arc guide roller (203) comprises an arc guide roller fixedly connected to the right side of the top of the support platform (101); two sliders are slidably mounted on the arc guide roller; the top of the slider is fixedly connected to the right side of the bottom of the platform surface (201); a support block is fixedly connected to the left side of the top of the support platform (101); the top of the support block is in sliding contact with the left side of the bottom of the platform surface (201).

5. A digital printing device according to claim 4, characterized in that: The swing angle drive motor assembly (206) comprises a fixed seat (2061) fixedly connected to the top of the support platform (101), a servo motor (2065) fixedly mounted on one side of the fixed seat (2061), a screw (2066) fixedly connected to the end of the output shaft of the servo motor (2065) and rotatably connected to the fixed seat (2061) via a bearing, a connecting seat (2063) threadedly sleeved on the outside of the screw (2066), and a connecting pin (2064) rotatably mounted on the connecting seat (2063), wherein the connecting pin (2064) is rotatably mounted on the bottom of the platform surface (201), a T-shaped guide rail (2062) is mounted on the fixed seat (2061), the connecting seat (2063) is slidably mounted on the T-shaped guide rail (2062), and the servo motor (2065) is electrically connected to the PLC controller.

6. The digital printing device according to claim 1, characterized in that: The positioning camera assembly 1 (13) and the positioning camera assembly 2 (14) both comprise a fixing plate (1301) fixedly connected between the front and rear inner walls of the frame (1); a motion module (1302) is fixedly mounted on the top of the two fixing plates (1301); a servo motor 2 (1303) whose output shaft is fixedly connected to the driving end of the corresponding motion module (1302) is mounted on the top of the fixing plates (1301); a camera (1305) and a light source (1304) are fixedly mounted on the top of the moving ends of the two motion modules (1302); the light source (1304) is sleeved on the outer side of the corresponding camera (1305); and the camera (1305), the light source (1304) and the servo motor 2 (1303) are all electrically connected to a PLC controller.

7. The digital printing device according to claim 1, characterized in that: Two first guide wheels rotatably mounted between the front and rear inner walls of the frame (1) are provided below the deviation corrector (7), and the coil substrate moves around the outsides of the two first guide wheels. Second guide wheels rotatably mounted between the front and rear inner walls of the frame (1) are provided on both sides of the double-sided dust collector (8), and there are two second guide wheels on the left side, and the coil substrate moves around the outsides of three second guide wheels.

8. The digital printing device according to claim 1, characterized in that: The transverse X-axis (3) and the two feeding Y-axes (11) are driven by branch line motors, and the printing action is achieved by positioning with a metal grating ruler.

9. The digital printing device according to claim 4, characterized in that: The top of the platform surface (201) is provided with a plurality of suction holes which are all connected to the interior of the platform suction cavity (202).

10. The digital printing device according to claim 6, characterized in that: The two transition rollers (205) are both located between the two cameras (1305), and the lenses of the cameras (1305) are arranged facing the corresponding transition rollers (205).

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