CN117863733A - Multipurpose belt type ink-jet UV printer - Google Patents

Abstract

The utility model relates to a multipurpose belt-type inkjet UV printer, comprising: the conveying belt is used for conveying a workpiece to be printed, and the workpiece to be printed is provided with a printing position and a drying position positioned at the downstream of the printing position; the detection module is used for collecting displacement information of a workpiece to be printed on the conveying belt in real time; the control module outputs corresponding control signals according to displacement information, the displacement information indicates that the workpiece to be printed is positioned at a printing position, the control module outputs a printing signal, and the control module outputs a drying signal when the displacement information indicates that the workpiece to be printed is positioned at a drying position; the printing module is used for carrying out ink-jet printing on the workpiece to be printed on the printing position according to the printing signal; and the drying module is used for drying and shaping the workpiece to be printed on the drying position according to the drying signal. The UV printer is limited by the robustness of equipment in the related art, the continuous operation efficiency is low, and the situation that the inkjet trolley needs to reciprocate along a preset track aiming at a workpiece with a jet printing sheet is improved, the jet printing operation time is long, and the jet printing efficiency is low.

Description

Multipurpose belt type ink-jet UV printer

Technical Field

The utility model relates to the technical field of printing equipment, in particular to a multipurpose belt type ink-jet UV printer.

Background

Market products such as daily necessities, stationery, tools and the like have the demands of printing company labels, unique patterns or anti-counterfeiting marks and the like, so that the printing industry has an incapacitating position in the social production industry.

At present, most of the market printing technologies are traditional pad printing, silk screen printing, ink jet printing and the like, wherein the ink jet printing is most mature due to good printing effect and special advantage development of being applicable to paper, cloth and the like. The traditional pad printing and silk screen printing have the problems of environmental pollution, material waste, complicated cleaning, health hazard and the like.

In the related art, when a scanning printer works, a workpiece to be printed needs to be placed in a printing area, and ink is ejected to the surface of the workpiece by the ink vehicle in a reciprocating manner along a preset motion track, so that the time is long.

In addition, the headstock needs to be reset after each printing operation, the requirement on the robustness of the equipment is high, and under the condition of continuous printing of a plurality of batches, the headstock reset operation is needed to be executed after each piece of workpiece is printed by the equipment. In the whole printing process, once the headstock cannot return to zero or move, the printer cannot work normally, and the headstock cannot return to zero normally for various reasons, including but not limited to: the motion trail sensor of the UV printer fails, and the sensor cannot accurately detect the position of the headstock; the guide rail is worn; loosening of the conveyor belt, etc. When the fault is removed by manually repositioning the head or repairing and replacing the fault components, the equipment is stopped, and the continuous operation efficiency of the equipment is reduced.

The utility model discloses a UV flat-panel ink-jet printer in China patent publication No. CN216993591U, which comprises a frame, an ink-jet table arranged on the frame and a transmission assembly, wherein a cross beam and an ink-jet trolley which is connected to the cross beam in a sliding manner are arranged on the ink-jet table, the transmission assembly is used for driving the ink-jet trolley to move on the cross beam, an ink box and a liquid level sensor arranged on the surface of the ink box are arranged in the ink-jet trolley, the liquid level sensor is used for sensing the liquid level of ink, and a liquid level display screen is arranged on the frame and is used for receiving signals of the liquid level sensor and displaying the liquid level of the ink.

In the above-mentioned utility model patent, the inkjet trolley is driven by the transmission component in the actual jet printing process, and reciprocates on the beam to carry out jet printing operation on the workpiece to be printed, and the defects of long jet printing operation time and low jet printing efficiency of the inkjet trolley still exist, and the problem that the inkjet trolley cannot return to zero accurately easily occurs under continuous high-strength operation of the inkjet trolley, so that the continuous operation efficiency of equipment is affected.

Disclosure of Invention

In order to improve the condition that in the related art, the UV printer is limited by equipment robustness, the continuous operation efficiency is low, aiming at a workpiece with a single piece of printing, the inkjet trolley needs to reciprocate along a preset track, the inkjet printing operation time is longer, and the inkjet printing efficiency is low, the application provides a multipurpose belt type inkjet UV printer, so that the reliability of the UV printer in the continuous operation is improved, the inkjet printing operation time of the workpiece with the single piece of printing is reduced, and the inkjet printing efficiency is improved.

The application provides a multipurpose belt inkjet UV printer, adopts following technical scheme:

a multi-purpose belt-type inkjet UV printer comprising a cabinet, the multi-purpose belt-type inkjet UV printer further comprising:

the conveying belt is arranged on one side, far away from the ground, of the cabinet, and is used for conveying a workpiece to be printed according to a preset feeding direction, and the workpiece to be printed is provided with a processing station, wherein the processing station comprises a printing position and a drying position positioned at the downstream of the printing position;

the detection module is connected with the conveying belt and used for collecting displacement information of the workpiece to be printed on the conveying belt in real time;

the control module is connected with the detection module and used for respectively outputting corresponding control signals according to the displacement information, the displacement information indicates that the workpiece to be printed is positioned at the printing position, the control module outputs a printing signal, and the displacement information indicates that the workpiece to be printed is positioned at the drying position, and the control module outputs a drying signal;

the printing module is connected with the control module and arranged on one side, far away from the cabinet, of the conveyor belt and is used for carrying out ink-jet printing on the workpiece to be printed on the printing position according to the printing signal;

and the drying module is connected with the control module, is arranged on one side, far away from the cabinet, of the conveying belt and is positioned at the downstream of the printing module, and is used for drying and shaping the workpiece to be printed on the drying position according to the drying signal.

Optionally, the conveyor belt includes a driver, and the detection module includes:

the incoming material detection unit is arranged on one side, far away from the drying module, of the printing module and is used for outputting an incoming material signal when the workpiece to be printed is detected to pass through;

the displacement detection unit is connected with the incoming material detection unit and is used for acquiring and outputting the displacement information according to the incoming material signal;

the control module receives the displacement information and outputs the corresponding control signal.

Optionally, a color code is preset on the surface to be printed of the workpiece to be printed, and the incoming material detection unit outputs the incoming material signal according to the color code.

Optionally, the printing module corresponds to a preset printing area, and then the multipurpose belt type inkjet UV printer further comprises a guiding module, the guiding module is arranged on one side of the detecting module away from the printing module, the guiding module is provided with a material inlet channel for the workpiece to be printed to pass through, the inner wall of the material inlet channel is propped against the side wall of the workpiece to be printed, and the workpiece to be printed enters the printing area through the material inlet channel.

Optionally, the displacement detection unit selects an encoder, the encoder is connected with the driver, and is used for collecting an angle signal output by the driver during operation in real time, and outputting corresponding displacement information according to the angle signal, and then the control module outputs the corresponding control signal according to the displacement information.

Optionally, the multipurpose belt type inkjet UV printer has a beam, the printing module includes an ink vehicle unit detachably mounted on the beam, and the ink vehicle unit receives the printing signal to perform inkjet printing;

the ink vehicle unit comprises a bottom plate arranged on the beam frame, a control board card, an air bottle, a secondary ink box and a spray head are arranged on the bottom plate, the spray head faces the conveying belt, the secondary ink box is connected with the spray head, the air bottle is respectively connected with the control board card and the secondary ink box, and the control board card is started according to the printing signal to control the air bottle so as to convey ink in the secondary ink box to the spray head for ink jet printing.

Optionally, the printing module further comprises a position adjusting unit, and the position adjusting unit controls the ink vehicle unit to deviate from the beam frame according to an externally input adjusting signal.

Optionally, the printing module further includes a pre-spraying printing unit disposed on one side of the ink vehicle unit, which is close to the detection module, the pre-spraying printing unit includes a spraying printing subunit and a drying subunit disposed on the downstream of the spraying printing unit, the spraying printing subunit is used for performing ground color spraying printing on the workpiece to be printed according to a pre-spraying printing signal input from the outside, and the drying subunit is used for performing drying treatment on the workpiece to be printed after the ground color spraying printing.

Optionally, the printing module further comprises a height limiting unit, the height limiting unit is arranged on one side, close to the detection module, of the ink vehicle unit, a touch point is arranged on the end face, facing the conveying belt, of the height limiting unit, when the workpiece to be printed contacts the touch point, the height limiting unit outputs a collision signal, and the control module controls the conveying belt to stop working according to the collision signal.

By adopting the technical scheme, the simple general multipurpose belt type ink-jet UV printer which is used for replacing the traditional ink pad printing screen printer and is different from a scanning type UV printer on the market is developed, and is printed in a mode that a spray head is fixed and a conveyor belt drives a product to pass below the spray head. Compared with the traditional printing or scanning type ink-jet printing, the printing efficiency is greatly improved.

According to the printing requirement of the workpiece to be printed, a worker can also adjust the position of the ink vehicle unit compared with the beam frame by controlling the adjusting unit, so that the ink vehicle unit can carry out ink jet printing on the workpiece to be printed with different sizes and specifications, and the working efficiency of batch printing of the UV printer is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following discussion will discuss the embodiments or the drawings required in the description of the prior art, and it is obvious that the technical solutions described in connection with the drawings are only some embodiments of the present utility model, and that other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a control schematic of a multi-purpose tape type inkjet UV printer.

Fig. 2 is a schematic structural view of a multipurpose tape type inkjet UV printer.

Fig. 3 is a schematic structural view of the beam and carriage unit.

Fig. 4 is a schematic structural view of the position adjusting unit.

Fig. 5 is a schematic diagram of the structure of the second connecting frame and the color code sensor.

Fig. 6 is a schematic structural view of the guide module.

Fig. 7 is a partial structural schematic diagram of the carriage unit.

Fig. 8 is a schematic structural view of the balance bar.

In the figure: 1. a cabinet; 2. a conveyor belt; 3. a workpiece to be printed; 4. a detection module; 5. a control module; 6. a printing module; 7. a drying module; 41. an incoming material detection unit; 42. a displacement detection unit; 8. a guide module; 9. a material supply channel; 61. an inking carriage unit; 611. a bottom plate; 62. a position adjustment unit; 63. a pre-spray printing unit; 631. a jet printing subunit; 632. a drying subunit; 64. a height limiting unit; 612. a spray head; 613. a secondary ink cartridge; 614. an air bottle; 10. a first connection frame; 11. a material guiding baffle; 12. a beam frame; 13. a second connecting frame; 14. a height adjusting plate; 15. a base; 16. a metal inductive switch; 17. a balance bar; 171. an induction end; 172. touching the end.

Detailed Description

The following description of the embodiments of the present utility model will be made in detail and with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present utility model. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without the need for inventive faculty, are within the scope of the utility model.

An embodiment of the present utility model provides a multipurpose belt type inkjet UV printer, as shown in fig. 1 to 8, including a cabinet 1, the multipurpose belt type inkjet UV printer further including:

the conveying belt 2 is arranged on one side, far away from the ground, of the cabinet 1, the conveying belt 2 is used for conveying a workpiece 3 to be printed according to a preset feeding direction, the workpiece 3 to be printed is provided with a processing station, and the processing station comprises a printing position and a drying position positioned at the downstream of the printing position;

the detection module 4 is connected with the conveying belt 2 and is used for collecting displacement information of the workpiece 3 to be printed on the conveying belt 2 in real time;

the control module 5 is connected with the detection module 4 and is used for respectively outputting corresponding control signals according to displacement information, wherein the displacement information indicates that the workpiece 3 to be printed is positioned at a printing position, the control module 5 outputs a printing signal, and the displacement information indicates that the workpiece 3 to be printed is positioned at a drying position, and the control module 5 outputs a drying signal;

the printing module 6 is connected with the control module 5 and is arranged on one side, far away from the cabinet 1, of the conveyor belt 2, and the printing module 6 is used for carrying out ink-jet printing on the workpiece 3 to be printed on the printing position according to the printing signal;

and the drying module 7 is connected with the control module 5, is arranged on one side, far away from the cabinet 1, of the conveying belt 2 and is positioned at the downstream of the printing module 6, and is used for drying and shaping the workpiece 3 to be printed on the drying position according to the drying signal.

Specifically, in this embodiment, when the width of the printing content of the workpiece 3 to be printed is too large, and under the premise that the printing module 6 is fixed in the inkjet printing process, there is a situation that the printing module 6 cannot complete one-time printing, so the multipurpose belt type inkjet UV printer of the present application is suitable for products with a width of 400mm or less and a height of 100mm or less, and the printing needs.

In the actual printing process, the conveying belt 2 conveys the workpiece 3 to be printed along the set feeding direction, the detection module 4 collects displacement information of the workpiece 3 to be printed, when the displacement information indicates that the workpiece 3 to be printed reaches the printing module 6, the control module 5 outputs a printing signal to control the printing module 6 to perform ink-jet printing on the workpiece 3 to be printed, and then the control module 5 outputs a drying signal according to the displacement information to control the drying module 7 to perform drying treatment on the workpiece subjected to the ink-jet printing.

In the inkjet printing process, the printing module 6 does not need to reset and return to zero, the workpiece 3 to be printed is controlled to move through the conveying belt 2, the printing module 6 is relatively static, inkjet printing processing of the workpiece 3 to be printed can be completed, under the condition of continuous operation, the condition that the printing module 6 cannot continue operation due to positioning faults is effectively reduced, the reliability of the multipurpose belt type inkjet UV printer during continuous operation is improved, and the continuous operation efficiency of the multipurpose belt type inkjet UV printer is further improved.

In a preferred embodiment of the utility model, the conveyor belt 2 comprises a drive, and the detection module 4 comprises:

the incoming material detection unit 41 is arranged on one side of the printing module 6 away from the drying module 7, and is used for outputting an incoming material signal when detecting that the workpiece 3 to be printed passes;

the displacement detection unit 42 is connected with the incoming material detection unit 41 and is used for acquiring and outputting displacement information according to incoming material signals;

the control module 5 receives the displacement information and outputs a corresponding control signal.

In a preferred embodiment of the present utility model, the displacement detecting unit 42 is an encoder, and the encoder is connected to the driver, and is configured to collect an angular signal output by the driver during operation in real time, and output corresponding displacement information according to the angular signal, and then the control module 5 outputs a corresponding control signal according to the displacement information.

In the preferred embodiment of the present utility model, the surface to be printed of the workpiece 3 is provided with a color code in advance, and the incoming material detecting unit 41 outputs an incoming material signal according to the color code.

Specifically, in this embodiment, the incoming material detecting unit 41 is a color scale sensor.

The distance between the color code sensor and the printing module 6 is fixed, the color code sensor is arranged towards the conveying belt 2, when the workpiece 3 to be printed passes through the color code sensor, the color code sensor detects the color code and outputs an incoming material signal, the encoder starts to collect the rotation quantity of the driver of the conveying belt 2 from receiving the incoming material signal and converts the rotation quantity into an electric signal to be used as displacement information for output, and the control module 5 judges that the workpiece 3 to be printed reaches the printing module 6 according to the displacement information, and outputs a printing signal to control the printing module 6 to perform ink-jet printing on the workpiece 3 to be printed.

In the preferred embodiment of the present utility model, the printing module 6 corresponds to a preset printing area, and the multi-purpose belt type inkjet UV printer further includes a guiding module 8, the guiding module 8 is disposed on a side of the detecting module 4 away from the printing module 6, the guiding module 8 has a feeding channel 9 for the workpiece 3 to be printed to pass through, an inner wall of the feeding channel 9 abuts against a side wall of the workpiece 3 to be printed, and the workpiece 3 to be printed enters the printing area through the feeding channel 9.

Specifically, in this embodiment, the guiding module 8 includes a first connecting frame 10 and two guiding baffles 11 mounted on the first connecting frame 10, the two guiding baffles 11 are located above the conveying belt 2, the first connecting frame 10 is fixed to two sides of the conveying belt 2, and the guiding baffles 11 are close to each other to form a feeding channel 9 for the workpiece 3 to be printed to pass through.

In the preferred embodiment of the present utility model, the multipurpose belt type inkjet UV printer has a beam 12, the printing module 6 includes an ink vehicle unit 61, the ink vehicle unit 61 is detachably mounted on the beam 12, and the ink vehicle unit 61 receives a printing signal to perform inkjet printing;

the carriage unit 61 includes a bottom plate 611 mounted on the beam 12, a control board card, an air tank 614, a secondary ink tank 613 and a nozzle 612 are mounted on the bottom plate 611, the nozzle 612 is disposed towards the conveyor belt 2, the secondary ink tank 613 is connected to the nozzle 612, the air tank 614 is respectively connected to the control board card and the secondary ink tank 613, and the control board card controls the air tank 614 to start according to a printing signal so as to convey ink in the secondary ink tank 613 to the nozzle 612 for ink jet printing.

Specifically, in this embodiment, the carriage units 61 have different inkjet specifications of single color and color, and the user selects the carriage unit 61 for single-color inkjet or the carriage unit 61 for color inkjet according to the inkjet color requirements.

In the preferred embodiment of the present utility model, the printing module 6 further includes a position adjusting unit 62, and the position adjusting unit 62 controls the displacement of the carriage unit 61 relative to the beam 12 according to an externally input adjusting signal.

Specifically, in the present embodiment, when the height dimension of the workpiece 3 to be printed is changed, the user can control the adjustment unit to adjust the height of the carriage unit 61 compared to the conveyor belt 2. The adjusting unit comprises a plurality of sliding rails fixed on the beam frame 12, sliding blocks are connected to the sliding rails in a sliding manner, the ink vehicle unit 61 is connected with the beam frame 12 through the sliding blocks, and the sliding blocks are driven by a motor to shift along the sliding rails.

The incoming material detection unit 41 further comprises second connecting frames 13 fixed on two sides of the conveying belt 2, the color code sensor is installed above the conveying belt 2 through the second connecting frames 13, the height adjusting plate 14 is fixed on the second connecting frames 13, and the color code sensor is slidably installed on the height adjusting plate 14. The user can adjust the relative position of the color scale sensor on the height adjustment plate 14 in the height direction.

In the preferred embodiment of the present utility model, the printing module 6 further includes a pre-spraying printing unit 63 disposed on a side of the carriage unit 61 near the detecting module 4, the pre-spraying printing unit 63 includes a spraying printing subunit 631 and a drying subunit 632 disposed downstream of the spraying printing unit, the spraying printing subunit 631 is configured to perform the base color spraying printing on the workpiece 3 to be printed according to the pre-spraying printing signal input from the outside, and the drying subunit 632 is configured to perform the drying treatment on the workpiece 3 to be printed after the base color spraying printing.

Specifically, in this embodiment, the workpiece 3 to be printed, which needs to be printed with white background to enhance the subsequent ink-jet effect, needs to be printed by the ink-jet sub-unit 631, then the drying sub-unit 632 performs drying treatment, finally the ink-jet unit 61 performs ink-jet printing, the drying module 7 performs drying treatment, and the bottom color-jet printing and the printing pattern-jet printing of the workpiece 3 to be printed can be implemented on a multi-purpose belt type ink-jet UV printer, without changing the ink-jet sub-unit 61, thereby improving the efficiency of ink-jet printing

Wherein, the drying module 7 and the drying subunit 632 are both selected from LED lamps for drying treatment.

In the preferred embodiment of the present utility model, the printing module 6 further includes a height limiting unit 64, the height limiting unit 64 is disposed on one side of the carriage unit 61 near the detecting module 4, a touch point is disposed on an end surface of the height limiting unit 64 facing the conveyor belt 2, the time limiting unit 64 outputs a collision signal when the workpiece 3 to be printed contacts the touch point, and the control module 5 controls the conveyor belt 2 to stop working according to the collision signal.

Specifically, in the present embodiment, the height limiting unit 64 includes a base 15 fixed on a side of the bottom plate 611 close to the color scale sensor, a metal inductive switch 16 and a balance bar 17 are disposed on the base 15, and the balance bar 17 has an inductive end 171 and a touch end 172. The balance bar 17 is located at one side of the metal inductive switch 16 close to the color code sensor, and the inductive surface of the metal inductive switch 16 is parallel to the inductive end 171 of the balance bar 17. The touching end 172 of the balance bar 17 is rotatably connected to the base 15, and a part of the side of the balance bar extending beyond the base 15 toward the conveyor belt 2 serves as a touching point, and the distance between the touching point and the conveyor belt 2 is not greater than the distance between the bottom of the carriage unit 61 and the conveyor belt 2. When the workpiece 3 to be printed is deformed or carries foreign matters so that the height exceeds standard, the workpiece 3 to be printed firstly rubs with the touch point, the touch end 172 rotates, the sensing end 171 of the balance bar 17 is far away from the sensing surface of the metal sensing switch 16, the metal sensing switch 16 cannot sense metal at the moment, a corresponding collision signal is output, the control module 5 controls the conveyor belt 2 to stop working according to the collision signal, and further the situation that the workpiece 3 to be printed moves below the ink vehicle unit 61 and collides with the ink vehicle unit 61 to damage the nozzle 612 is reduced.

To sum up, a simple general-purpose multi-purpose belt-type inkjet UV printer developed to replace the conventional ink pad printing screen printer and different from the scanning multi-purpose belt-type inkjet UV printer on the market prints in such a way that the nozzle 612 is stationary and the conveyor belt 2 drives the product to pass under the nozzle 612. Compared with the traditional printing or scanning type ink-jet printing, the printing efficiency is greatly improved.

According to the printing requirement of the workpiece 3 to be printed, the worker can also adjust the position of the ink vehicle unit 61 compared with the beam frame 12 by controlling the adjusting unit, so that the ink vehicle unit 61 can perform ink jet printing on the workpiece 3 to be printed with different sizes, and the working efficiency of batch printing of the multipurpose belt type ink jet UV printer is improved.

Claims (9)

1. A multipurpose belt inkjet UV printer comprising a cabinet (1), characterized in that the multipurpose belt inkjet UV printer further comprises:

the conveying belt (2) is arranged on one side, far away from the ground, of the cabinet (1), the conveying belt (2) is used for conveying a workpiece (3) to be printed according to a preset feeding direction, the workpiece (3) to be printed is provided with a processing station, and the processing station comprises a printing position and a drying position positioned at the downstream of the printing position;

the detection module (4) is connected with the conveying belt (2) and is used for collecting displacement information of the workpiece (3) to be printed on the conveying belt (2) in real time;

the control module (5) is connected with the detection module (4) and is used for respectively outputting corresponding control signals according to the displacement information, the displacement information indicates that the workpiece (3) to be printed is positioned at the printing position, the control module (5) outputs a printing signal, and the displacement information indicates that the workpiece (3) to be printed is positioned at the drying position, and the control module (5) outputs a drying signal;

the printing module (6) is connected with the control module (5) and is arranged on one side, far away from the cabinet (1), of the conveying belt (2), and the printing module (6) is used for carrying out ink-jet printing on the workpiece (3) to be printed on the printing position according to the printing signals;

and the drying module (7) is connected with the control module (5), is arranged on one side, far away from the cabinet (1), of the conveying belt (2) and is positioned at the downstream of the printing module (6), and is used for drying and shaping the workpiece (3) to be printed on the drying position according to the drying signal.

2. The multi-purpose belt-type inkjet UV printer according to claim 1, the conveyor belt (2) comprising a drive, characterized in that the detection module (4) comprises:

the incoming material detection unit (41) is arranged on one side, far away from the drying module (7), of the printing module (6) and is used for outputting an incoming material signal when the workpiece (3) to be printed is detected to pass through;

the displacement detection unit (42) is connected with the incoming material detection unit (41) and is used for acquiring and outputting the displacement information according to the incoming material signal;

the control module (5) receives the displacement information and outputs the corresponding control signal.

3. The multi-purpose tape inkjet UV printer of claim 2, wherein: and a color code is preset on the surface to be printed of the workpiece (3) to be printed, and the incoming material detection unit (41) outputs the incoming material signal according to the color code.

4. A multi-purpose tape inkjet UV printer according to claim 3 wherein: the printing module (6) corresponds to a preset printing area, the multipurpose belt type ink-jet UV printer further comprises a guiding module (8), the guiding module (8) is arranged on one side, away from the printing module (6), of the detecting module (4), the guiding module (8) is provided with a feeding channel (9) for the workpiece to be printed (3) to pass through, the inner wall of the feeding channel (9) abuts against the side wall of the workpiece to be printed (3), and the workpiece to be printed (3) enters the printing area through the feeding channel (9).

5. The multi-purpose tape inkjet UV printer of claim 2, wherein: the displacement detection unit (42) selects an encoder, the encoder is connected with the driver, and is used for collecting an angle signal output by the driver during operation in real time and outputting corresponding displacement information according to the angle signal, and the control module (5) outputs a corresponding control signal according to the displacement information.

6. The multi-purpose belt inkjet UV printer according to claim 1 having a beam (12), characterized in that: the printing module (6) comprises an ink vehicle unit (61), wherein the ink vehicle unit (61) is detachably arranged on the beam frame (12), and the ink vehicle unit (61) receives the printing signal to perform ink jet printing;

the ink vehicle unit (61) comprises a bottom plate (611) arranged on the beam frame (12), a control board card, an air bottle (614), a secondary ink box (613) and a spray head (612) are arranged on the bottom plate (611), the spray head (612) faces the conveying belt (2), the secondary ink box (613) is connected with the spray head (612), the air bottle (614) is respectively connected with the control board card and the secondary ink box (613), and the control board card is started according to the printing signal to control the air bottle (614) so as to convey ink in the secondary ink box (613) to the spray head (612) for ink-jet printing.

7. The multi-purpose tape inkjet UV printer of claim 6, wherein: the printing module (6) further comprises a position adjusting unit (62), and the position adjusting unit (62) controls the ink vehicle unit (61) to deviate from the beam frame (12) according to an externally input adjusting signal.

8. The multi-purpose tape inkjet UV printer of claim 6, wherein: the printing module (6) further comprises a pre-spraying printing unit (63) arranged on one side of the ink vehicle unit (61) close to the detection module (4), the pre-spraying printing unit (63) comprises a spraying printing subunit (631) and a drying subunit (632) arranged on the downstream of the spraying printing unit, the spraying printing subunit (631) is used for performing ground color spraying printing on the workpiece (3) to be printed according to a pre-spraying printing signal input from the outside, and the drying subunit (632) is used for performing drying treatment on the workpiece (3) to be printed after the ground color spraying printing.

9. The multi-purpose tape inkjet UV printer of claim 6, wherein: the printing module (6) further comprises a height limiting unit (64), the height limiting unit (64) is arranged on one side, close to the detection module (4), of the ink vehicle unit (61), a touch point is arranged on the end face, facing the conveying belt (2), of the height limiting unit (64), when the workpiece (3) to be printed contacts the touch point, the height limiting unit (64) outputs a collision signal, and the control module (5) controls the conveying belt (2) to stop working according to the collision signal.