Air door driving assembly and air suction platform

Abstract

The utility model is suitable for the field of air door control, and provides an air door driving assembly and an air suction platform. The air door driving assembly comprises a mounting seat; a first arc-shaped track and a second arc-shaped track which are connected end to end are arranged in the rotating direction of each driving wheel, and the curvature of the first arc-shaped track is smaller than that of the second arc-shaped track; the at least two driving rods are in one-to-one correspondence with the at least two driving wheels, and one end of each driving rod can move between the first arc-shaped track and the second arc-shaped track; the at least two baffles are arranged on the at least two air doors one by one and correspond to the at least two driving rods one by one, the baffles are used for closing or opening the corresponding air doors, the baffles are connected with the other ends of the driving rods, when the driving rods move in the first arc-shaped track, the baffles close the air doors, and when the driving rods move in the second arc-shaped track, the baffles open the air doors. The phenomenon that the drop point position of ink drops is affected due to ink absorption of the spray head can be avoided, and the printing effect can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of air damper control, and particularly relates to an air damper driving assembly and a suction platform. Background Art

[0002] During the digital printing operation, it is usually necessary for a suction platform to adsorb a medium to prevent the medium from shifting, which may affect the printing effect. The suction cavity of the existing suction platform is of an integral structure. When the medium passes over the suction platform, the entire suction cavity is filled with negative pressure simultaneously to adsorb the medium. In the process of the medium moving, the strong air flow generated in the suction area not covered by the medium will cause ink sucking phenomenon to the print head during the printing operation, resulting in affecting the landing point of the ink droplets and thus affecting the printing effect. Summary of the Utility Model

[0003] The air damper driving assembly provided by the utility model aims to solve the problem that the suction of the entire area of the suction platform in the prior art will cause ink sucking phenomenon to the print head, resulting in affecting the landing point of the ink droplets and thus affecting the printing effect.

[0004] The utility model is realized as follows. An air damper driving assembly for controlling the opening and closing of at least two air dampers includes:

[0005] A mounting seat;

[0006] At least two driving wheels rotatably arranged on the mounting seat. A first arc track and a second arc track connected end to end are arranged in the rotation direction of each driving wheel, and the curvature of the first arc track is smaller than that of the second arc track;

[0007] At least two driving rods movably arranged on the mounting seat and corresponding to at least two driving wheels one by one. One end of the driving rod can move between the first arc track and the second arc track;

[0008] At least two baffles respectively configured for at least two air dampers and corresponding to at least two driving rods one by one. The baffle is used to close or open the corresponding air damper. The baffle is connected to the other end of the driving rod. When the driving rod moves in the first arc track, the baffle closes the air damper. When the driving rod moves in the second arc track, the baffle opens the air damper;

[0009] At the preset position, the driving rod corresponding to the first driving wheel in the preset direction is placed in the second arc track, and the driving rods corresponding to the remaining driving wheels are placed in the first arc track and are arranged in sequence away from the end point of the first arc track in the moving direction of the driving rod;

[0010] When at least two of the driving wheels rotate synchronously, the driving rod corresponding to the first driving wheel enters the first arc track from the second arc track, and the driving rods corresponding to the remaining driving wheels sequentially enter the second arc track from the first arc track. At least two of the driving rods control at least two of the baffles to sequentially open at least two of the air dampers until all are opened, and then sequentially close at least two of the air dampers until all are closed.

[0011] Further, the first arc track and the second arc track are combined into a gourd-shaped structure. The included angle between the midpoint connection line of the first arc track and the second arc track and the horizontal line is set as α. The included angle α on each driving wheel is set to adjust the preset position of the driving rod on the first arc track or the second arc track.

[0012] Further, in the preset direction, let the included angle on the first driving wheel be α1, let the included angle on the second driving wheel be α2..., and let the included angle on the nth driving wheel be αn. Then the angular difference Δα of the included angle α between two adjacent driving wheels is Δα1, Δα2... Δαn, where Δα1, Δα2... Δαn increase linearly.

[0013] Further, at least two of the driving wheels are coaxially arranged. The preset direction is the axial direction of the driving wheels. The first arc track and the second arc track are arranged on the side of the driving wheels.

[0014] Further, the air damper driving assembly further includes a driving member and a transmission shaft arranged on the mounting seat. At least two of the driving wheels are spaced apart along the axial direction of the transmission shaft and installed on the transmission shaft. The driving member drives the transmission shaft to rotate.

[0015] Further, at least two air shafts are arranged at intervals along the axial direction of the transmission shaft. At least two air shafts are configured one-to-one with at least two of the driving wheels. The driving wheels are fixed on the transmission shaft through the air shafts.

[0016] Further, the outer contour of the driving wheel is adapted to the shape enclosed by the first arc track and the second arc track.

[0017] Further, a roller is provided at one end of the driving rod moving on the first arc track and the second arc track. The roller can move on the first arc track and the second arc track.

[0018] Further, a guide groove is provided on the mounting seat. The driving rod passes through the guide groove and can move in the guide groove.

[0019] The present utility model further provides an air suction platform for adsorbing media in a digital printing device, which includes the aforementioned air door driving assembly. The air suction platform is provided with at least two air suction areas, and the at least two air suction areas are arranged flat along the moving direction of the media. At least two of the at least two air suction areas are provided with at least two air doors, and the air doors in at least two air suction areas in the moving direction of the media correspond to the driving wheels in a preset direction one by one.

[0020] The beneficial effects achieved by the present utility model are as follows: By setting at least two driving wheels, at least two driving rods, and at least two baffles that correspond one by one, that is, one driving wheel, one driving rod, and one baffle form a control unit for controlling the opening or closing of one air door. When the driving wheel rotates, the driving rod can switch its movement on the first arc track and the second arc track, so as to be able to close or open the corresponding air door by the baffle. By setting the starting positions of the driving rods on different driving wheels at preset positions, it is possible to realize that at least the driving wheels control at least the air doors to be opened one by one until all are opened and then closed one by one until all are closed. In practical applications, at least two air suction units respectively communicated with at least two air doors can be independently and sequentially opened or sequentially closed. For example, when specifically applied to the air suction platform in a digital printing device, it can be applied to an air suction platform with at least two air suction areas. The at least two air suction areas are arranged flat along the moving direction of the media on the air suction platform, and the air doors in at least two air suction areas in the moving direction of the media correspond to the driving wheels in a preset direction one by one. In this way, during the movement of the media, the adsorption areas not covered by the media will not be opened, and the air suction areas after the media passes will be closed in time, so that there will be no air flow in the front and rear air suction areas not covered by the media, which can avoid the ink sucking phenomenon of the air flow on the nozzle and avoid affecting the landing position of the ink droplets, thereby improving the printing effect. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of an air door driving assembly provided by the present utility model;

[0022] Figure 2 is another perspective structural diagram of an air door driving assembly provided by the present utility model;

[0023] Figure 3 is a state change diagram of the movement of the driving rod on the driving wheel of an air door driving assembly provided by the present utility model;

[0024] Figure 4 is a schematic structural diagram of an air suction platform provided by the present utility model.

[0025] Explanation of the Reference Numerals in the Drawings:

[0026] 1. Mounting base; 11. Guide groove; 2. Driving wheel; 21. First arc track; 22. Second arc track; 3. Driving rod; 4. Baffle; 5. Driving member; 6. Transmission shaft; 7. Air shaft; 8. Roller; 9. Air cavity; 91. First air outlet; 92. Second air outlet; 10. Platform main body; 101. Air door; 102. Air suction hole; 20. Air door driving assembly; 100. Medium. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] See Figure 1 、 Figure 4, an embodiment of the present utility model provides a damper driving assembly, which is applied to a suction platform having at least two suction areas. The suction platform is used to adsorb and convey medium 100, and the damper driving assembly is used to control the opening and closing of at least two dampers 101. The at least two dampers correspond to and communicate with the at least two suction areas one by one. The damper driving assembly includes a mounting seat 1, at least two driving wheels 2, at least two drivers, at least two driving rods 3, and at least two baffles 4. Among them, the at least two driving wheels 2 are rotatably arranged on the mounting seat 1. A first arc track 21 and a second arc track 22 are arranged end to end in the rotation direction of each driving wheel 2. The curvature of the first arc track 21 is smaller than that of the second arc track 22. The at least two driving rods 3 are movably arranged on the mounting seat 1 and correspond to the at least two driving wheels 2 one by one. One end of the driving rod 3 can move between the first arc track 21 and the second arc track 22. The at least two baffles 4 are respectively arranged on the at least two dampers 101 and correspond to the at least two driving rods 3 one by one. The baffle 4 is used to close or open the corresponding damper 101. The baffle 4 is connected to the other end of the driving rod 3. When the driving rod 3 moves in the first arc track 21, the baffle 4 closes the damper 101. When the driving rod 3 moves in the second arc track 22, the baffle 4 opens the damper 101. At a preset position, the driving rod 3 corresponding to the first driving wheel 2 in a preset direction is placed in the second arc track 22, and the driving rods 3 corresponding to the remaining driving wheels 2 are placed in the first arc track 21 and are sequentially arranged away from the end point of the first arc track 21 in the moving direction of the driving rod 3. That is, except for the first driving wheel 2 in the preset direction, the driving rods 3 on the remaining driving wheels 2 take sequentially longer time to move to the end point of the first arc track 21 in their moving direction. When the at least two driving wheels 2 rotate synchronously, the driving rod 3 corresponding to the first driving wheel 2 enters the first arc track 21 from the second arc track 22, and the driving rods 3 corresponding to the remaining driving wheels 2 sequentially enter the second arc track 22 from the first arc track 21. The at least two driving rods 3 control the at least two baffles 4 to sequentially open the at least two dampers 101 until all are opened and then sequentially close the at least two dampers 101 until all are closed.

[0029] By setting at least two driving wheels 2, at least two driving rods 3, and at least two baffles 4 in one-to-one correspondence, that is, one driving wheel 2, one driving rod 3, and one baffle 4 form a control unit for controlling the opening or closing of a damper 101. When the driving wheel 2 rotates, the driving rod 3 can switch its movement between the first arc track 21 and the second arc track 22, so as to realize the closing or opening of the corresponding damper 101 by the baffle 4. By setting the starting positions of the driving rods 3 on different driving wheels 2 at preset positions, it can be realized that at least the driving wheels 2 control at least the dampers 101 to open one by one until all are opened and then close one by one until all are closed. In actual application, at least two suction units respectively connected to at least two dampers 101 can be independently and sequentially opened or closed. For example, when specifically applied to the suction platform of a digital printing device, it can be applied to a suction platform with at least two suction areas. The at least two suction areas are arranged side by side along the medium movement direction of the suction platform. The dampers 101 of the at least two suction areas in the medium movement direction correspond to the driving wheels 2 in the preset direction one by one. In this way, during the movement of the medium 100, the adsorption areas not covered by the medium 100 will not be opened, and the suction areas after the medium 100 passes will be closed in time, so that there will be no air flow in the front and rear suction areas not covered by the medium 100, which can avoid the ink suction phenomenon of the air flow on the nozzle to avoid affecting the landing position of the ink droplets, thereby improving the printing effect.

[0030] The damper 101 control assembly provided by the present utility model can control at least two dampers 101 to open one by one until all are opened and then close one by one until all are closed. When applied to a suction platform, it can avoid ink suction on the nozzle, which may otherwise affect the landing position of the ink droplets, and can improve the printing effect.

[0031] See Figure 2 , specifically, the damper 101 is used to communicate with the air chamber 9. The air chamber 9 is provided with a first air outlet 91 corresponding to the damper 101 one by one, and the first air outlet 91 is arranged in contact with the damper 101. The size of the baffle 4 can satisfy covering the damper 101 or covering the first air outlet 91. In this embodiment, the size of the baffle 4 is set to cover the first air outlet 91. In this way, the closing or opening of the damper 101 can also be realized. The air chamber 9 is further provided with a second air outlet 92, and the second air outlet 92 is used to connect with a negative pressure source.

[0032] See Figure 3, Further, the first arc track 21 and the second arc track 22 are combined into a gourd-shaped structure. The included angle between the midpoint connection line of the first arc track 21 and the second arc track 22 (hereinafter referred to as "line a") and the horizontal line is set as α. The included angle α on each driving wheel 2 is set to adjust the preset position of the driving rod 3 on the first arc track 21 or the second arc track 22. Specifically, the air dampers 101 can be set to 2, 3, 4... n according to the actual application scenario. Correspondingly, the baffles 4, the driving rods 3, and the driving wheels 2 can be set to 2, 3, 4... n. They can be set according to the actual requirements such as the specifications of the medium 100, the moving speed of the medium 100, and the size of the air suction area of the platform main body 10. Then, the same number of driving wheels are set according to the number of air dampers 101, and the included angle α on each driving wheel is set, so as to realize that at least the air dampers 101 are opened one by one in sequence until all are opened, and then closed one by one in sequence until all are closed.

[0033] See Figure 3 , Further, at the preset position and in the preset direction, let the included angle between line a and the horizontal line on the first driving wheel 2 be α1, let the included angle between line a and the horizontal line on the second driving wheel 2 be α2... let the included angle between line a and the horizontal line on the nth driving wheel 2 be αn. Then, the included angles α between two adjacent driving wheels 2 are Δα, Δα,... Δαn, and Δα, Δα, Δα... Δαn increase linearly. Among them, α, α... αn and Δα, Δα,... Δαn are determined according to the number of the set air suction areas, so as to make the driving rods 3 on at least two driving wheels 2 generate a stroke difference at the preset position. After setting the preset angle, the rotation speed of the driving wheel 41 is determined by the moving speed of the medium 100. In this way, it can be ensured that the baffle 4 controls the corresponding air dampers 101 to open one by one until all are opened and then close one by one until all are closed during the synchronous rotation of at least two driving wheels 2.

[0034] See Figure 3, for better understanding, in this embodiment, the air dampers 101 are set to 3 as an example. Correspondingly, there are also 3 driving wheels 2, driving rods 3, and baffles 4. From left to right (i.e., in the preset direction), the left driving wheel 2 corresponds to the first air damper 101, the middle driving wheel 2 corresponds to the second air damper 101, and the right driving wheel 2 corresponds to the third air damper 101. In the initial state, the angle between the a-line on the left driving wheel 2 and the horizontal line is preset to -10°, the angle between the a-line on the middle driving wheel 2 and the horizontal line is preset to -70°, and the angle between the a-line on the right driving wheel 2 and the horizontal line is preset to -160°. Then, Δα = 60°, Δα = 90°, and Δα is greater than Δα and increases linearly. During operation, the three driving wheels 2 rotate synchronously counterclockwise (in practice, the driving wheels 2 can also be set to rotate synchronously clockwise. When changing the rotation direction of the driving wheels 2, the angles between the a-lines on the left, middle, and right driving wheels 2 and the horizontal line change accordingly). The movement states of the driving rods 3 on the three driving wheels 2 on the first arc track 21 and the second arc track 22 of the corresponding driving wheels 2 are as Figure 3 shown, changing from state 1 to state 2, state 3, state 4, state 5, and state 6 in sequence. In state 1, all three air dampers 101 are in the closed state 2; state 2 is when, after the three driving wheels 2 rotate synchronously for a certain time in state 1, the first air damper 101 opens, and the second and third air dampers 101 are both in the closed state; state 3 is when, after the three driving wheels 2 rotate synchronously for a certain time in state 2, the first air damper 101 remains open, the second air damper 101 changes from closed to open, and the third air damper 101 remains closed; state 4 is when, after the synchronous wheel rotates for a certain time in state 3, the first and second air dampers 101 both remain open, and the third air damper 101 changes from closed to open; state 5 is when, after the synchronous wheel rotates for a certain time in state 4, the first air damper 101 changes from open to closed, and the second and third air dampers 101 remain open; state 6 is when, after the synchronous wheel rotates for a certain time in state 5, the first air damper 101 remains closed, the second air damper 101 changes from open to closed, and the third air damper 101 remains open; then state 6 changes to state 1, the first and second air dampers 101 remain closed, and the third air damper 101 changes from open to closed. At this time, all three air dampers 101 are closed, and a control opening and closing process based on at least two air dampers 101 is completed. The three air suction areas change from state 6 to state 1 and continue to enter the next cycle.

[0035] It should be noted that the specific number of the air dampers 101 can be set according to actual needs. Then, the curvature of the first arc track 21 and the second arc track 22 on the driving wheel 2 and the angle of the a-line on each driving wheel 2 can be set according to the number of the air dampers 101. When the number of the air dampers 101 is small, the difference between Δα1, Δα2, …… Δαn needs to be increased. When the number of the air dampers 101 increases, the difference between Δα1, Δα2, …… Δαn becomes smaller. For example, in this embodiment, the number of the air dampers 101 is 3, Δα1 is 60°, Δα2 is 90°, and the difference between Δα1 and Δα2 is 30°. If the number of the air dampers 101 is 2, the difference between Δα1 and Δα2 needs to be set greater than 30°. If the number of the air dampers 101 is greater than 3, the difference between Δα1 and Δα2 needs to be set less than 30°. In this way, it can be ensured that all the air dampers 101 are in the closed state in state 1. Then, the rotation speed of the driving wheel 2 is determined according to the moving speed of the medium 100. When the driving wheels 2 rotate synchronously, it can be ensured that they are opened in sequence until all are opened and then closed in sequence until all are closed.

[0036] See Figure 1 , Further, at least two driving wheels 2 are coaxially arranged, the preset direction is the axial direction of the driving wheel 2, and the first arc track 21 and the second arc track 22 are arranged on the side surface of the driving wheel 2. In this way, it is convenient for the reasonable layout of the structure of the driving wheel 2 to save the occupied space.

[0037] See Figure 1 , Further, the air damper 101 driving assembly further includes a driving member 5 and a transmission shaft 6 arranged on the mounting seat 1. At least two driving wheels 2 are installed on the transmission shaft 6 at intervals along the axial direction of the transmission shaft 6. At the same time, the driving member 5 drives the transmission shaft 6 to rotate to ensure the accuracy of the synchronous rotation of at least two driving wheels 2. At the same time, only one driving member 5 can be used to drive at least two driving wheels 2 to rotate synchronously, saving space and production costs.

[0038] See Figure 1 、 Figure 2 , Further, at least two air shafts 7 are arranged on the transmission shaft 6 at intervals along its axial direction. At least two air shafts 7 are configured one by one with at least two driving wheels 2, and the driving wheels 2 are fixed on the transmission shaft 6 through the air shafts 7. During installation, after adjusting the angle α between the a-line on the driving wheel 2 and the horizontal line, the air shaft 7 is filled with gas so that the convex part of its surface moves up to abut against the driving wheel 2, thereby fixing the driving wheel 2 on the transmission shaft 7. Using the air shaft 7 to fix the driving wheel 2 and the transmission shaft 6 can make the preset angle of the a-line on each driving wheel 2 adjustable. Compared with the traditional non-adjustable (such as key structure) fixing method, this design can be compatible with the settings of different numbers of air dampers 101 and has stronger adaptability.

[0039] See Figure 3, Further, the outer contour of the driving wheel 2 is adapted to the shape formed by the first arc track 21 and the second arc track 22. In this way, the volume of the driving wheel 2 can be reduced, excessive space occupation can be avoided, and the miniaturization of the structure can be realized.

[0040] See Figure 1 、 Figure 2 , Further, a roller 8 is provided at one end of the driving rod 3 that moves on the first arc track 21 and the second arc track 22, and the roller 8 can move on the first arc track 21 and the second arc track 22. In this way, the frictional force generated when the driving rod 3 moves on the first arc track 21 and the second arc track 22 can be reduced, thereby reducing the load of the driving member 5, which is beneficial to reducing the cost of the driving member 5 and improving the service life.

[0041] See Figure 1 、 Figure 2 , Further, a guiding groove 11 is provided on the mounting base 1, and the driving rod 3 passes through the guiding groove 11 and can move within the guiding groove 11. On the one hand, the guiding groove 11 can support and fix the driving rod 3, and on the other hand, it can guide the driving rod 3 when it is driven by the driving wheel 2 to move.

[0042] See Figure 4 , An embodiment of the present invention further provides a suction platform for adsorbing the medium 100 in a digital printing device, including the aforementioned air door 101 driving assembly. The suction platform is provided with at least two suction areas (not marked in the figure), and the at least two suction areas are arranged flat along the moving direction of the medium 100. At least two air doors 101 are provided in the at least two suction areas, and the air doors 101 in the at least two suction areas in the moving direction of the medium 100 correspond one by one to the driving wheels 2 in a preset direction, that is, the first driving wheel 2 in the preset direction controls the air door 101 of the first suction area in the moving direction of the medium 100, and the remaining driving wheels 2 and the air doors 101 of the suction areas are correspondingly arranged in this way.

[0043] The suction platform provided by the present invention can control at least two suction areas to be opened one by one along the moving direction of the medium 100 until all are opened and then closed one by one until all are closed, that is, when the medium 100 moves to the current suction area, the corresponding suction area is in an open state, and this continues until all suction areas are opened. At this time, the medium 100 completely covers all suction areas. After the medium 100 leaves the suction area, the corresponding suction area is closed until the medium 100 completely leaves the suction area and all suction areas are closed. In this way, the generation of air flow in the area not covered by the medium 100 (the front end and the rear end of the medium 100 in the moving direction) can be avoided, and the ink sucking phenomenon on the nozzle can be prevented, thereby avoiding affecting the landing position of the ink droplets and affecting the printing effect.

[0044] Specifically, the air suction platform includes an air suction main body. An air suction cavity (not marked in the figure) is provided inside the air suction main body. The air suction cavity is divided into at least two air suction zones along the moving direction of the medium 100. Air suction holes 102 are provided on the surface of the air suction main body. The air suction holes 102 are communicated with the air suction cavity, that is, communicated with each air suction zone to ensure that an air flow channel is formed in each air suction zone.

[0045] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A damper drive assembly for controlling the opening and closing of at least two dampers, characterized in that: include: Mounting seat; At least two driving wheels are rotatably disposed on the mounting seat, each of the driving wheels is provided with a first arc track and a second arc track connected end to end in the direction of rotation, and the curvature of the first arc track is smaller than the curvature of the second arc track; At least two driving rods are movably disposed on the mounting seat and correspond to the at least two driving wheels one by one, and one end of the driving rod can move between the first arc track and the second arc track; At least two baffles are arranged one by one on at least two of the dampers and correspond one by one to at least two of the driving rods, the baffles are used to close or open the corresponding dampers, the baffles are connected to the other end of the driving rod, when the driving rod moves in the first arc track, the baffles close the dampers, when the driving rod moves in the second arc track, the baffles open the dampers; At the preset position, the driving rod corresponding to the first driving wheel in the preset direction is placed in the second arc track, and the driving rods corresponding to the remaining driving wheels are placed in the first arc track and are arranged successively away from the end points of the first arc track in the moving direction of the driving rod; When at least two of the driving wheels rotate synchronously, the driving rod corresponding to the first driving wheel enters the first arc track from the second arc track, and the driving rods corresponding to the remaining driving wheels enter the second arc track from the first arc track in turn, and at least two of the driving rods control at least two baffles to open at least two dampers in turn until they are all opened and close at least two dampers in turn until they are all closed.

2. The damper drive assembly according to claim 1, characterized in that: The first curved track and the second curved track are assembled into a gourd-shaped structure, and the angle between the midpoint line of the first curved track and the second curved track and the horizontal line is set to α, and the angle α on each driving wheel is set to adjust the preset position of the driving rod on the first curved track or the second curved track.

3. The damper drive assembly according to claim 2, characterized in that: In the preset direction, let the angle on the first driving wheel be α1, let the angle on the second driving wheel be α2…, let the angle on the nth driving wheel be αn, then the angle difference between the angles α of two adjacent driving wheels is Δα1, Δα2…Δαn, wherein Δα1, Δα2…Δαn increases linearly.

4. The damper drive assembly according to claim 1, characterized in that: At least two of the driving wheels are coaxially arranged, the preset direction is the axial direction of the driving wheel, and the first arc track and the second arc track are arranged on the side of the driving wheel.

5. The damper drive assembly according to claim 4, characterized in that: The damper drive assembly also includes a drive member and a transmission shaft arranged on the mounting seat, at least two drive wheels are installed on the transmission shaft at intervals along the axial direction of the transmission shaft, and the drive member drives the transmission shaft to rotate.

6. The damper drive assembly according to claim 5, characterized in that: At least two inflatable shafts are spaced apart on the transmission shaft along the axial direction thereof, and the at least two inflatable shafts are configured one by one with at least two driving wheels, and the driving wheels are fixed to the transmission shaft through the inflatable shafts.

7. The damper drive assembly according to claim 4, characterized in that: The outer contour of the driving wheel is adapted to a shape enclosed by the first arc-shaped track and the second arc-shaped track.

8. The damper drive assembly according to claim 1, wherein: A roller is provided at one end of the driving rod that moves on the first arc track and the second arc track, and the roller can move on the first arc track and the second arc track.

9. The damper drive assembly according to claim 1, wherein: The mounting seat is provided with a guide groove, and the driving rod passes through the guide groove and can move in the guide groove.

10. A suction platform, used for adsorbing media in digital printing equipment, characterized in that: It comprises the damper driving assembly as described in any one of claims 1 to 9, wherein the suction platform is provided with at least two suction areas, at least two suction areas are arranged flatly along the moving direction of the medium, at least two of the suction areas are provided with at least two dampers, and the dampers of at least two suction areas in the moving direction of the medium correspond one-to-one with the driving wheels in the preset direction.

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