A UV flatbed printer air suction switching device

Abstract

The application discloses a UV flatbed printer air suction switching device and belongs to the flatbed printer field, which comprises a fan, an adsorption platform, a switching mechanism and a pipe replacement cleaning mechanism. The fan is arranged in a printer body, and an air inlet pipe and an air outlet pipe are arranged on the fan. The adsorption platform is installed on the printer body, and a ventilation pipe is connected to the lower side of the adsorption platform. The air inlet pipe and the air outlet pipe of the fan are communicated with the switching mechanism, and the switching mechanism is communicated with the ventilation pipe. The switching mechanism comprises a switching body. By changing the connection properties of the fan and the adsorption platform, the difficulty of lifting the plate by the workers is reduced, the labor intensity is reduced, and the plate or the adsorption platform can be prevented from being scratched. The switching mechanism and the pipe replacement cleaning mechanism are matched, so that dust cannot be accumulated on the filter screen and the filter plate, the suction force of the adsorption platform and the air outlet intensity are maintained, and the maintenance of the air outlet intensity is favorable for taking out the plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flatbed printer, especially to a UV flatbed printer air suction switching device. BACKGROUND

[0002] At present, when printing some materials, the flatbed printer has many air suction holes on the platform for adsorbing the materials to be processed because the materials have a large width and the surface needs to be relatively flat and fixed during processing.

[0003] The existing UV flatbed printer has an adsorption platform for adsorbing products to be printed, but the adsorption platform of the existing UV flatbed printer only has adsorption function, and it is laborious to manually carry down the plate with heavy weight, and the physical loss is large, and the plate or the adsorption platform is easily scratched when the plate is taken off. SUMMARY

[0004] The present application provides a switching mechanism to change the connection properties of the fan and the adsorption platform, and provides an upward force to the plate by air power, reduces the difficulty of lifting the plate for the workers, reduces the labor intensity, and avoids scratching the plate or the adsorption platform. In order to solve the above technical problems, the present application solves the problems through the following technical solutions.

[0005] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0006] A UV flatbed printer air suction switching device, comprising: a fan, an adsorption platform, a switching mechanism and a pipe cleaning mechanism, the fan is arranged in the printer body, the fan is provided with an air inlet pipe and an air outlet pipe; the adsorption platform is installed on the printer body, and the lower side of the adsorption platform is connected with a ventilation pipe; the air inlet pipe and the air outlet pipe of the fan are communicated with the switching mechanism, and the switching mechanism is communicated with the ventilation pipe; the switching mechanism comprises a switching body, a cavity communicating with the air inlet pipe and the air outlet pipe is arranged in the switching body, a pipe one, a pipe two and a pipe three communicating with the cavity are arranged on one side of the switching body in sequence, the air inlet pipe is located between the pipe one and the pipe two, and the air outlet pipe is located between the pipe two and the pipe three; a switching piston is arranged in the cavity, and the switching piston extends to the outside of the switching body and is connected with a driving device; the pipe cleaning mechanism comprises a connecting pipe one communicated with the pipe two and the ventilation pipe in the air suction state, a connecting pipe two is fixed on the connecting pipe one, a filter screen is arranged on the connecting pipe one, and a cleaning piece one is arranged on one side of the connecting pipe one.

[0007] Preferably, the tube replacement cleaning mechanism further comprises a linkage component, the linkage component comprises a rack in sliding connection with a switching body, a screw is connected to the switching body, a bevel gear pair I is connected to the screw, the rack and the bevel gear pair I are connected through a speed increasing gear set, a connecting plate is threadedly connected to the screw, and the upper end of the connecting plate is fixed with the connecting pipe I and the connecting pipe II.

[0008] Preferably, the switching body is provided with a support plate on one side, the cleaning piece I and the screw are connected through a transmission component, the transmission component comprises a transmission rod rotatably arranged on the support plate, the transmission rod and the screw are connected through a belt pulley assembly, a longitudinal reciprocating screw rod is rotatably arranged on the support plate, the transmission rod and the longitudinal reciprocating screw rod are connected through a bevel gear pair II, and the cleaning piece I is connected with the longitudinal reciprocating screw rod.

[0009] Preferably, a support ring is fixed to the outer ring of the filter screen, and the support ring and the end face of the connecting pipe I are connected through a plurality of arc-shaped blocks.

[0010] Preferably, the tube replacement cleaning mechanism further comprises a sealing component, the pipe II and the ventilation pipe end are sleeved with a sealing sleeve and a spring, the two ends of the spring on the pipe II are connected with the switching body and the sealing sleeve respectively, and the two ends of the spring on the ventilation pipe are connected with the support plate and the sealing sleeve respectively.

[0011] Preferably, a guide part is arranged between the two sealing sleeves, the guide part comprises guide plates fixed to the sealing sleeves, a guide strip is arranged between the two guide plates, and the end of the guide strip is connected with the output end of the driving device.

[0012] Preferably, the connecting pipe I and the connecting pipe II are fixed with sealing rings corresponding to the sealing sleeves.

[0013] Preferably, the air inlet of the pipe I is provided with a filter plate.

[0014] Preferably, the edge of the filter plate is fixed with a sliding block, the switching body is fixed with a sliding rail, the sliding block and the sliding rail are in sliding connection, the filter plate is provided with a cleaning piece II on one side, and the sliding block is fixed with the connecting plate.

[0015] Preferably, the cleaning piece II and the cleaning piece I are connected through a synchronization plate.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] By changing the connection attribute of the fan and the adsorption platform, the air inlet end of the fan is communicated with the adsorption platform through the switching mechanism during printing to realize the adsorption function, when the plate needs to be removed, the air outlet end of the fan is connected with the adsorption platform through the switching mechanism, and the plate is provided with an upward force through the air force, so that the difficulty of lifting the plate by the worker is reduced, the labor intensity is reduced, and the plate or the adsorption platform is prevented from being scratched;

[0018] The pipe changing and cleaning mechanism can automatically remove dirt accumulated on the filter screen and the filter plate during operation without additional driving equipment, thereby reducing the need for manual intervention, improving the convenience and efficiency of use, automatically cleaning the dirt on the filter screen and the filter plate during switching, saving time and effort, reducing maintenance cost, increasing service life, and reducing replacement frequency;

[0019] The filter screen and the filter plate are prevented from accumulating dust through the cooperation of the switching mechanism and the pipe changing and cleaning mechanism, so that the suction force and the air outlet force of the adsorption platform are maintained, and the maintenance of the air outlet force is beneficial to the removal of the plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0022] Figure 2 It is a schematic diagram of the ventilation pipe and the adsorption platform of the present application.

[0023] Figure 3 It is a schematic diagram of the switching mechanism and the pipe changing and cleaning mechanism of the present application.

[0024] Figure 4 It is a schematic diagram of the pipe one, pipe two and pipe three of the present application.

[0025] Figure 5 It is a schematic diagram of the connecting pipe one and the connecting pipe two of the present application.

[0026] Figure 6 It is a schematic diagram of the linkage component of the present application.

[0027] Figure 7 It is a schematic diagram of the internal structure of the switching body of the present application.

[0028] Figure 8 It is a schematic diagram of the transmission component of the present application.

[0029] Figure 9 A schematic view of a sealing sleeve of the present application.

[0030] Figure 10 A schematic view of a filter plate of the present application.

[0031] Figure 11 A schematic view of a filter screen of the present application.

[0032] Figure number explanation: 1, fan; 11, air inlet pipe; 12, air outlet pipe; 2, adsorption platform; 3, switching mechanism; 31, ventilation pipe; 32, switching body; 321, cavity; 322, pipeline one; 323, pipeline two; 324, pipeline three; 325, frame body; 33, switching piston piece; 331, piston rod; 332, piston disc; 34, driving device; 35, support plate; 36, slide rail; 4, pipe replacement cleaning mechanism; 41, connecting pipe one; 411, connecting plate; 412, filter screen; 4121, support ring; 413, cleaning piece one; 4131, fixed plate one; 4132, cleaning brush one; 414, arc block; 42, connecting pipe two; 43, linkage component; 431, rack; 432, screw rod; 433, bevel gear pair one; 434, speed increasing gear set; 44, transmission component; 441, transmission rod; 442, belt pulley assembly; 443, longitudinal reciprocating wire rod; 444, bevel gear pair two; 45, sealing component; 451, sealing sleeve; 452, spring; 453, sealing ring; 46, guide part; 461, guide plate; 462, guide strip; 47, filter plate; 471, slide block; 48, cleaning piece two; 481, fixed plate two; 482, cleaning brush two; 49, synchronization plate; 5, printer body; 6, collection box. DETAILED DESCRIPTION

[0033] The present application will be further described below in further detail with reference to the drawings.

[0034] The following description is provided to enable those skilled in the art to practice the present application. The preferred embodiments described below are only examples of the present application and the skilled in the art can think of other obvious variations within the scope of the present application. The essential principles of the present application defined in the following description can be used in other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0035] Those skilled in the art should understand that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or position based on the orientation or position shown in the drawings, which is only for the convenience of the simplified description of the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0036] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0037] Please refer to Figures 1-11 A UV flatbed printer air suction switching device, comprising: a fan 1, an adsorption platform 2, a switching mechanism 3 and a pipe replacement cleaning mechanism 4, the fan 1 is arranged in the printer body 5, the fan 1 is provided with an air inlet pipe 11 and an air outlet pipe 12; the adsorption platform 2 is installed on the printer body 5, and the lower side of the adsorption platform 2 is connected with a ventilation pipe 31, the fan 1 and the adsorption platform 2 are prior art, and will not be described.

[0038] The air inlet pipe 11 and the air outlet pipe 12 of the fan 1 are communicated with the switching mechanism 3, and the switching mechanism 3 is communicated with the ventilation pipe 31; the switching mechanism 3 comprises a switching body 32, the switching body 32 is provided with a cavity 321 communicated with the air inlet pipe 11 and the air outlet pipe 12, one side of the switching body 32 is provided with a pipeline one 322, a pipeline two 323 and a pipeline three 324 communicated with the cavity 321 in sequence, the pipeline two 323 is connected with the ventilation pipe 31 through the pipe replacement cleaning mechanism 4, the air inlet pipe 11 is located between the pipeline one 322 and the pipeline two 323, the air outlet pipe 12 is located between the pipeline two 323 and the pipeline three 324, the cavity 321 is provided with a switching piston 33, the switching piston 33 extends to the outside of the switching body 32 and is connected with a driving device 34, the switching piston 33 comprises a piston rod 331 and two piston discs 332 fixed on the piston rod 331, the piston disc 332 is provided with a rubber piece, and the rubber pad is used for sealing, such as Figure 7As shown, at this time, one piston disc 332 is located between the pipe one 322 and the air inlet pipe 11, and the other piston disc 332 is located between the pipe two 323 and the air outlet pipe 12, the air inlet pipe 11 is communicated with the pipe, which is the air suction state, the driving device 34 of the application is a cylinder, the extending end of the cylinder is fixed with a moving plate, the moving plate is connected with the piston rod 331; when it is needed to exhaust the adsorption platform 2, the driving device 34 is started to move the moving plate and the piston rod 331, the piston rod 331 moves with the piston disc 332, and when one piston disc 332 moves between the pipe two 323 and the air inlet pipe 11, and the other piston disc 332 moves between the air outlet pipe 12 and the pipe three 324, the movement is stopped.

[0039] By changing the connection attribute of the fan 1 and the adsorption platform 2, the air inlet end of the fan 1 is communicated with the adsorption platform 2 through the switching mechanism 3 during printing to realize the adsorption function, when it is needed to take down the plate, the air outlet end of the fan 1 is connected with the adsorption platform 2 through the switching mechanism 3 to provide an upward force for the plate through the air force, which reduces the difficulty of lifting the plate for the workers, reduces the labor intensity, and can avoid scratching the plate or the adsorption platform 2.

[0040] The pipe cleaning mechanism 4 includes a connecting pipe one 41 communicated with the pipe two 323 and the air duct 31 in the air suction state, the connecting pipe one 41 is fixed with a connecting pipe two 42, the connecting pipe one 41 is provided with a filter screen 412, and the connecting pipe one 41 is provided with a cleaning piece one 413, in the air exhaust state of the adsorption platform 2, the two ends of the connecting pipe two 42 are respectively communicated with the pipe two 323 and the air duct 31.

[0041] The pipe cleaning mechanism 4 further includes a linkage component 43, the linkage component 43 includes a rack 431 in sliding connection with the switching body 32, the switching body 32 is connected with a screw rod 432, the switching body 32 is fixed with a frame 325, the screw rod 432 is in rotary connection with the frame 325, the screw rod 432 is connected with a bevel gear pair one 433, the rack 431 and the bevel gear pair one 433 are connected through a speed increasing gear set 434, the screw rod 432 is threadedly connected with a connecting plate 411, the connecting plate 411 is in sliding connection with the frame 325, the frame 325 limits the connecting plate 411 to be able to stably move horizontally, the upper end of the connecting plate 411 is fixed with the connecting pipe one 41 and the connecting pipe two 42, the screw rod 432 is rotated to move the connecting plate 411, and the connecting plate 411 moves with the connecting pipe one 41 and the connecting pipe two 42.

[0042] The switching body 32 is provided with a support plate 35, the ventilation pipe 31 passes through the support plate 35, the cleaning piece one 413 is connected with the screw rod 432 through a transmission component 44, the transmission component 44 comprises a transmission rod 441 which is rotationally arranged on the support plate 35, the transmission rod 441 is connected with the screw rod 432 through a belt pulley assembly 442, the belt pulley assembly 442 is composed of two pulleys and a belt, which is prior art and will not be described, the screw rod 432 is rotated to rotate the transmission rod 441 through the belt pulley assembly 442, the support plate 35 is rotationally provided with a longitudinal reciprocating screw rod 443, the transmission rod 441 is connected with the longitudinal reciprocating screw rod 443 through a bevel gear pair two 444, the cleaning piece one 413 is connected with the longitudinal reciprocating screw rod 443, the cleaning piece one 413 comprises a fixed plate one 4131 and a cleaning brush one 4132, the fixed plate one 4131 is slidingly connected with the support plate 35 in the longitudinal direction, the connection between the fixed plate one 4131 and the longitudinal reciprocating screw rod 443 is prior art and will not be described, the outer ring of the filter screen 412 is fixed with a support ring 4121, the stability is increased, the support ring 4121 is connected with the end face of the connecting pipe one 41 through a plurality of arc blocks 414. The present application is provided with three arc blocks 414, the three arc blocks 414 are uniformly distributed in the circumferential direction, and one of the arc blocks 414 is located at the top of the support ring 4121 and the top of the connecting pipe one 41, so that the lowermost side is without the arc block 414, the dust is conveniently fallen, the arc block 414 separates the filter screen 412 from the connecting pipe one 41, prevents the cleaned dust from entering the connecting pipe one 41, there is a space interval between the filter screen 412 and the ventilation pipe 31, prevents the dust of the filter screen 412 from being scraped into the ventilation pipe 31 when moving out.

[0043] The tube cleaning mechanism 4 further comprises sealing components 45, the pipe two 323 and the end of the ventilation pipe 31 are sleeved with sealing sleeves 451 and springs 452, the two ends of the spring 452 on the pipe two 323 are connected with the switching body 32 and the sealing sleeve 451 respectively, the two ends of the spring 452 on the ventilation pipe 31 are connected with the support plate 35 and the sealing sleeve 451 respectively, the connecting pipe one 41 and the connecting pipe two 42 are fixed with sealing rings 453 corresponding to the sealing sleeves 451, the sealing sleeves 451 are sleeved on the two ends of the connecting pipe one 41 under the action of the springs 452 and are in contact with the sealing rings 453, so as to prevent air leakage, guide portions 46 are arranged between the two sealing sleeves 451, the guide portions 46 comprise guide plates 461 fixed on the sealing sleeves 451, the guide plates 461 are provided with symmetrical plate inclined surfaces, guide strips 462 are arranged between the two guide plates 461, the guide strips 462 are two, corresponding to the two guide plates 461, the guide strips 462 are provided with symmetrical strip inclined surfaces, the guide strips 462 are connected with sliding strips, in order to increase the stability of the guide strips 462, reinforcing plates are arranged between the switching body 32 and the support plate 35, the ends of the guide strips 462 are connected with the output end of the driving device 34, when the guide strips 462 move, the strip inclined surfaces are in contact with the plate inclined surfaces, so as to make the sealing sleeves 451 move, so that the connecting pipe one 41 and the filter screen 412 are exposed, before the connecting pipe one 41 and the filter screen 412 are completely exposed, the rack 431 is not engaged with the speed increasing gear set 434.

[0044] When the connecting pipe two 42 moves to the position between the pipe and the ventilation pipe 31, the two sealing sleeves 451 are always in a far away state, when the connecting pipe two 42 reaches the position, the guide strips 462 continue to move, so that the guide strips 462 are separated from the guide, and then the two sealing sleeves 451 seal the two ends of the connecting pipe two 42 under the action of the springs 452.

[0045] The air inlet of the pipe one 322 is provided with a filter plate 47, the filter plate 47 filters the dust entering the pipe one 322, the filter plate 47 moves horizontally, the edges of the filter plate 47 are fixed with sliding blocks 471, the switching body 32 is fixed with sliding rails 36, the sliding blocks 471 are slidingly connected with the sliding rails 36, one side of the filter plate 47 is provided with a cleaning component two 48, the cleaning component two 48 comprises a fixed plate two 481 and a cleaning brush two 482, the sliding blocks 471 are fixed with the connecting plate 411, the cleaning component two 48 and the cleaning component one 413 are connected through a synchronous plate 49, in order to increase the stability of the synchronous plate 49, the synchronous plate 49 is slidingly connected with the support plate 35, and a limiting rod penetrating through the synchronous plate 49 is arranged, so that the cleaning component two 48 is stable, and the filter plate 47 is cleaned stably, the lower sides of the cleaning component one 413 and the cleaning component two 48 are provided with a collecting box 6 for collecting dust.

[0046] When the air outlet of the suction platform 2 is needed, the driving device 34 drives the moving plate to move, the moving plate drives the rack 431 to move together with the guide strip 462, when the guide strip 462 moves, the sealing sleeve 451 moves through the contact between the strip inclined surface and the plate inclined surface, the spring 452 is compressed, the connecting pipe one 41 and the filter screen 412 are exposed, before the connecting pipe one 41 and the filter screen 412 are completely exposed, the rack 431 is not engaged with the speed increasing gear set 434, when the connecting pipe one and the filter screen 412 are completely exposed, the rack 431 is engaged with the speed increasing gear set 434, then the screw rod 432 rotates through the bevel gear pair one 433, the screw rod 432 rotates to drive the connecting plate 411 to move, the connecting plate 411 drives the connecting pipe one 41, the connecting pipe two 42, the sliding block 471 and the filter plate 47 to move together, when the screw rod 432 rotates, it drives the transmission rod 441 to rotate through the belt pulley assembly 442, the transmission rod 441 rotates to drive the longitudinal reciprocating wire rod 443 to rotate through the bevel gear pair two 444, the longitudinal reciprocating wire rod 443 drives the fixed plate one 4131 to move up and down with the cleaning brush one 4132, the filter screen is cleaned by the cleaning brush one 4132 moving up and down during the moving out process, the effect is better, and the dust directly falls into the collecting box 6 for collection, so that the cleaning part one 413 can be used for a longer time, when the fixed plate one 4131 reciprocatingly moves up and down, the cleaning part two 48 moves up and down reciprocatingly through the synchronous plate 49, the cleaning part two 48 cleans the filter plate 47, and the dust falls into the collecting box 6, when the rack 431 is separated from the speed increasing gear set 434, the connecting plate 411, the cleaning part one 413 and the cleaning part two 48 stop moving, at this time, the connecting pipe two 42 moves to the position between the pipe and the ventilation pipe 31, and the two sealing sleeves 451 are always in the far away state, then the rack 431 continues to move with the guide strip 462, the guide strip 462 is separated from the guide plate 461, and the two sealing sleeves 451 seal the two ends of the connecting pipe two 42 under the action of the spring 452, until the piston disc 332 reaches the position.

[0047] When the suction is restored, the extension of the driving component brings the end of the moving plate back to the original position, the moving plate moves with the rack 431 and the guide strip 462, the guide strip 462 first moves away from the two sealing sleeves 451, then the spring 452 is compressed, the connecting pipe two 42 is exposed, then the rack 431 engages with the speed increasing gear set 434, then the screw rod 432 rotates through the bevel gear pair one 433, the connecting plate 411 moves with the connecting pipe one 41, the connecting pipe two 42, the slider 471 and the filter plate 47, the screw rod 432 rotates through the belt pulley assembly 442 to rotate the transmission rod 441, the transmission rod 441 rotates through the bevel gear pair two 444 to rotate the longitudinal reciprocating wire rod 443, the longitudinal reciprocating wire rod 443 moves the fixed plate one 4131 with the cleaning brush one 4132 up and down, increasing the cleaning times and the cleaning effect, the filter screen is cleaned by the cleaning brush one 4132 moving up and down during the resetting process, the effect is further increased, the fixed plate one 4131 reciprocatingly rises and falls through the synchronous plate 49 to move the cleaning part two 48 up and down, the cleaning part two 48 cleans the filter plate 47, when the rack 431 is separated from the speed increasing gear set 434, the connecting plate 411, the cleaning part one 413 and the cleaning part two 48 are reset, at this time the connecting pipe one 41 moves to the position between the pipeline and the ventilation pipe 31, and the two sealing sleeves 451 are always away from each other, the rack 431 and the guide strip 462 continue to move and reset, the guide strip 462 is separated from the guide plate 461, and the two sealing sleeves 451 seal the connecting pipe two 42 under the action of the spring 452, until the piston disc 332 returns to the original position, during the switching process, the dirt on the filter screen 412 and the filter plate 47 is automatically cleaned, saving time and effort, thereby maintaining the suction force and the air outlet force of the adsorption platform 2, the maintenance of the air outlet force is conducive to taking out the plate material, the automatic cleaning reduces the maintenance cost and increases the service life, and the frequency of replacement is reduced.

[0048] It should be understood by those skilled in the art that the embodiments of the application shown in the above description and the drawings are only examples and do not limit the application. The purpose of the application has been fully and effectively achieved. The function and structural principle of the application have been shown and described in the embodiments, and the embodiments of the application can be changed or modified in any way without departing from the principles.

Claims

1. A UV flatbed printer suction switching device, characterized in that: include: A fan (1) is arranged in the printer body (5), and the fan (1) is provided with an air inlet pipe (11) and an air outlet pipe (12); An adsorption platform (2) is mounted on the printer body (5), and a ventilation pipe (31) is connected to the lower side of the adsorption platform (2); A switching mechanism (3), wherein the air inlet pipe (11) and the air outlet pipe (12) of the fan (1) are both connected to the switching mechanism (3), and the switching mechanism (3) is connected to the ventilation pipe (31); the switching mechanism (3) comprises a switching body (32), wherein a cavity (321) connected to the air inlet pipe (11) and the air outlet pipe (12) is provided in the switching body (32), and a pipe 1 (322), a pipe 2 (323) and a pipe 3 (324) connected to the cavity (321) are sequentially provided on one side of the switching body (32), wherein the air inlet pipe (11) is located between the pipe 1 (322) and the pipe 2 (323), and the air outlet pipe (12) is located between the pipe 2 (323) and the pipe 3 (324), and wherein a switching piston (33) is provided in the cavity (321), and wherein the switching piston (33) extends to the outside of the switching body (32) and is connected to a driving device (34); The pipe-changing cleaning mechanism (4) comprises a connecting pipe (41) connected to the second pipe (323) and the ventilation pipe (31) when the adsorption platform (2) is in the air-suction state, the connecting pipe (42) is fixed on the connecting pipe (41), and when the adsorption platform (2) is in the air-discharging state, the two ends of the connecting pipe (42) are respectively connected to the second pipe (323) and the ventilation pipe (31), the connecting pipe (41) is provided with a filter (412), and a cleaning member (413) is provided on one side of the connecting pipe (41), the pipe-changing cleaning mechanism (4) further comprises a sealing member (45), and the ends of the second pipe (323) and the ventilation pipe (31) are both provided with A sealing sleeve (451) and a spring (452), a guide portion (46) is provided between the two sealing sleeves (451), the guide portion (46) includes a guide plate (461) fixed on the sealing sleeve (451), a guide bar (462) is provided between the two guide plates (461), the end of the guide bar (462) is connected to the output end of the driving device (34), a filter plate (47) is provided at the air inlet of the pipe (322), a cleaning member (48) is provided on one side of the filter plate (47), and the cleaning member (413) and the cleaning member (48) are used to clean the filter screen (412) and the filter plate (47), respectively.

2. The UV flatbed printer suction switching device according to claim 1, characterized in that: The tube changing and cleaning mechanism (4) further comprises a linkage component (43), wherein the linkage component (43) comprises a rack (431) slidably connected to the switching body (32), a screw (432) being connected to the switching body (32), a bevel gear pair 1 (433) being connected to the screw (432), the rack (431) and the bevel gear pair 1 (433) being connected via a speed increasing gear set (434), a connecting plate (411) being threadedly connected to the screw (432), and an upper end of the connecting plate (411) being fixed to the connecting tube 1 (41) and the connecting tube 2 (42).

3. The UV flatbed printer suction switching device according to claim 2, characterized in that: A support plate (35) is provided on one side of the switching body (32), and the cleaning piece (413) and the screw (432) are connected via a transmission component (44), and the transmission component (44) includes a transmission rod (441) rotatably provided on the support plate (35), and the transmission rod (441) and the screw (432) are connected via a pulley assembly (442), and a longitudinal reciprocating screw (443) is rotatably provided on the support plate (35), and the transmission rod (441) and the longitudinal reciprocating screw (443) are connected via a bevel gear pair (444), and the cleaning piece (413) is connected to the longitudinal reciprocating screw (443).

4. The UV flatbed printer suction switching device according to claim 3, characterized in that: A support ring (4121) is fixed to the outer ring of the filter screen (412), and the support ring (4121) is connected to the end surface of the connecting pipe (41) via a plurality of arc blocks (414).

5. The UV flatbed printer suction switching device according to claim 3, characterized in that: The two ends of the spring (452) on the second pipe (323) are respectively connected to the switching body (32) and the sealing sleeve (451), and the two ends of the spring (452) on the ventilation pipe (31) are respectively connected to the support plate (35) and the sealing sleeve (451).

6. The UV flatbed printer suction switching device according to claim 1, characterized in that: The connecting pipe 1 (41) and the connecting pipe 2 (42) are fixed with sealing rings (453) corresponding to the sealing sleeves (451).

7. The UV flatbed printer suction switching device according to claim 3, characterized in that: A slider (471) is fixed to the edge of the filter plate (47), a slide rail (36) is fixed to the switching body (32), the slider (471) is slidably connected to the slide rail (36), and the slider (471) is fixed to the connecting plate (411).

8. The UV flatbed printer suction switching device according to claim 7, characterized in that: The second cleaning member (48) and the first cleaning member (413) are connected via a synchronization plate (49).

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