Adsorption conveying device

Abstract

The utility model provides an adsorption conveying device. The adsorption conveying device comprises a mounting support, a driving mechanism, a first conveying belt, a second conveying belt, a first adsorption unit and a second adsorption unit. The driving mechanism comprises a driving part, a first belt wheel set and a second belt wheel set, the first belt wheel set and the second belt wheel set are both in transmission connection with the driving part, the first belt wheel set is provided with a first conveying belt installation position, and the second belt wheel set is provided with at least two second conveying belt installation positions. The first conveying belt is wound around the first conveying belt installation position, and the second conveying belt is wound around any second conveying belt installation position. The first adsorption unit is arranged on the mounting bracket and is close to the first conveying belt, the second adsorption unit is adjustably mounted on the mounting bracket in the first direction and is close to the second conveying belt, and the first adsorption unit and the second adsorption unit are used for adsorbing material sheets on the first conveying belt and the second conveying belt. According to the adsorption conveying device, adsorption conveying of the material sheets of different sizes can be implemented, and compatibility is improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic cell production equipment, and specifically to an adsorption and conveying device. Background Art

[0002] During the cell production process, it is often necessary to suction and convey the sheet material to transfer the sheet material. For example, when handling the sheet material, it is necessary to use a suction conveyor device to remove the sheet material from the material box and then convey the sheet material to the main sheet conveyor line. In another example, after the sheet material is processed, it is necessary to use a suction conveyor device to suck the sheet material from the main conveyor line, convey the sheet material, and release it into the material box on the side of the main conveyor line.

[0003] Existing suction conveying devices include a mounting bracket and two conveyor belts mounted on the mounting bracket in pairs. Each conveyor belt is equipped with a suction unit that attracts the web onto the conveyor belts, which then transport the web to the target location. Existing suction conveying devices have a fixed spacing between the two conveyor belts, which means they can only convey webs of a specific size and are not compatible with webs of different sizes. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides an adsorption conveying device, which adopts the following technical solutions:

[0005] An adsorption conveying device includes a mounting bracket, a driving mechanism, a first conveyor belt, a second conveyor belt, a first adsorption unit, and a second adsorption unit, wherein:

[0006] The driving mechanism includes a driving portion, a first pulley group and a second pulley group, wherein the first pulley group and the second pulley group are arranged side by side on the mounting bracket along the first direction, and the first pulley group and the second pulley group are both transmission-connected to the driving portion arranged on the mounting bracket, the first pulley group has a first conveyor belt mounting position, and the second pulley group has at least two second conveyor belt mounting positions spaced apart along the first direction;

[0007] The first conveyor belt is wound around the first conveyor belt installation position of the first pulley group, and the second conveyor belt is wound around any second conveyor belt installation position of the second pulley group. The conveying surfaces of the first conveyor belt and the second conveyor belt are located on the same plane. The driving unit is configured to synchronously drive the first pulley group and the second pulley group to rotate, so as to drive the first conveyor belt and the second conveyor belt to convey in a second direction, wherein the second direction is perpendicular to the first direction.

[0008] The first adsorption unit is arranged on the mounting bracket and is close to the conveying surface of the first conveyor belt. The second adsorption unit is installed on the mounting bracket and is close to the conveying surface of the second conveyor belt in an adjustable manner along the first direction. The first adsorption unit and the second adsorption unit are used to adsorb the material sheet on the conveying surface of the first conveyor belt and the second conveyor belt.

[0009] The adsorption conveying device of the present application has a first conveyor belt and a corresponding first adsorption unit fixedly arranged on a mounting bracket, and the mounting position of the second conveyor belt on the mounting bracket can be adjusted to adjust the distance between the second conveyor belt and the first conveyor belt.

[0010] The adsorption unit can also be adjusted in position along with the second conveyor belt. The adsorption conveying device of the present application can implement adsorption conveying of sheets of different sizes, thereby improving compatibility.

[0011] In some embodiments, the first pulley group includes a first driving wheel and several first driven wheels, the first driving wheel and each first driven wheel constitute a first conveyor belt mounting position, and the first driving wheel is connected to the movable part of the driving part; the second pulley group includes a second driving wheel and several second driven wheels, the second driving wheel has at least two first supporting drum surfaces arranged at intervals along the first direction, and each second driven wheel has at least two second supporting drum surfaces corresponding to the first supporting drum surfaces one by one, each first supporting drum surface and the corresponding second supporting drum surface constitute a second conveyor belt mounting position, and the second driving wheel is connected to the movable part of the driving part.

[0012] By configuring the second driving wheel and the second driven wheel as drum wheels with at least two supporting drum surfaces, at least two second conveyor belt installation positions are formed on the second pulley assembly. The second conveyor belt can be installed manually and conveniently and quickly at the appropriate second conveyor belt installation position.

[0013] In some embodiments, the driving portion includes a driving member, a transmission member and a rotating shaft, wherein: the rotating shaft is rotatably connected to the mounting bracket and is connected to the driving member via the transmission member, and the first driving wheel and the second driving wheel are both fixedly mounted on the rotating shaft; the driving member drives the rotating shaft to rotate via the transmission member to drive the first driving wheel and the second driving wheel to rotate synchronously.

[0014] By configuring the drive unit, only one drive element is needed to drive the first and second driving wheels to rotate synchronously, ultimately driving the first and second conveyor belts to rotate synchronously. This reduces drive costs and ensures consistent conveying speeds for the first and second conveyor belts.

[0015] In some embodiments, the second adsorption unit is installed on the mounting bracket via a position adjustment component, and the position adjustment component is used to adjust the installation position of the second adsorption unit in the first direction.

[0016] The second adsorption unit is installed on the mounting bracket via the position adjustment component, so that the installation position of the second adsorption unit can be flexibly adjusted, ensuring that the second adsorption unit can be position-adjusted synchronously with the second conveyor belt, that is, ensuring that the second adsorption unit remains close to the conveying surface of the second conveyor belt.

[0017] In some embodiments, the position adjustment assembly includes a fixed seat and a movable seat, wherein: the fixed seat is fixedly set on the mounting bracket; the movable seat is slidably connected to the fixed seat and can slide on the fixed seat along a first direction, and the second adsorption unit is set on the movable seat; the second adsorption unit is configured to switch to any second conveyor belt mounting position under the sliding drive of the movable seat.

[0018] A position adjustment component with a simple structure and low cost is provided. By manually pushing the movable seat to slide on the fixed seat, the second adsorption unit can be adjusted to any second conveyor belt installation position where the second conveyor belt is located.

[0019] In some embodiments, the fixed seat has at least two groups of first mounting holes arranged at intervals along the first direction, and each group of first mounting holes corresponds to a second conveyor belt mounting position of the second pulley group; a second mounting hole is provided on the movable seat; when the second adsorption unit switches to any second conveyor belt mounting position, the movable seat is fixed to the fixed seat by screws passing through the second mounting hole and the first mounting hole.

[0020] When the second adsorption unit is switched to the second conveyor belt installation position where the second conveyor belt is located, the movable seat is locked and positioned to prevent the movable seat from accidentally sliding, causing the second adsorption unit to deviate from the conveying surface of the second conveyor belt.

[0021] In some embodiments, a limiting groove is provided on the fixed seat, and the movable seat is located in the limiting groove and moves along the limiting groove.

[0022] The limiting groove realizes the sliding guidance of the movable seat, preventing the movable seat from deviating during the sliding process.

[0023] In some embodiments, the second adsorption unit has the same structure as the first adsorption unit. The second adsorption unit includes an adsorption block and a pipe joint. An air cavity is formed in the adsorption block. A blowing seam is provided on one side of the adsorption block. The blowing seam and the air cavity are connected. The air cavity is connected to the air source through the pipe joint. The air source supplies air into the air cavity, and the gas in the air cavity flows out from the blowing seam to generate negative pressure based on the Bernoulli effect. The negative pressure causes the sheet to be adsorbed on the conveying surface of the first conveyor belt and the second conveyor belt.

[0024] The first adsorption unit and the second adsorption unit adsorb the sheet onto the conveying surface of the first conveyor belt and the second conveyor belt in a non-contact manner through the Bernoulli effect. In this way, when the first conveyor belt and the second conveyor belt are conveying the sheet, the first adsorption unit and the second adsorption unit will not cause friction and wear to the sheet.

[0025] In some embodiments, the adsorption conveying device further includes a protective cover plate located between the conveying surfaces of the first conveyor belt and the second conveyor belt, and the protective cover plate is detachably disposed on the mounting bracket.

[0026] The protective cover is provided to protect the first and second pulley sets and other components. After the protective cover is removed, maintenance of the first and second pulley sets and other components and adjustment of the position of the second conveyor belt can be easily performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the adsorption and conveying device in the first tooling state according to an embodiment of the present application;

[0028] Figure 2 This is a schematic structural diagram of the adsorption and conveying device in the second tooling state according to an embodiment of the present application from one viewing angle;

[0029] Figure 3 This is a schematic structural diagram of the adsorption and conveying device in the second tooling state in an embodiment of the present application from another perspective;

[0030] Figure 4 A schematic diagram of the assembly structure of the driving unit, the first pulley assembly, and the second pulley assembly from one viewing angle;

[0031] Figure 5 A schematic diagram of the assembly structure of the driving unit, the first pulley assembly, and the second pulley assembly from another perspective;

[0032] Figure 6 Schematic diagram of the assembly structure of the position adjustment component and the second adsorption unit in an embodiment of the present application.

[0033] Figures 1 to 6 Included are:

[0034] Mounting bracket 1;

[0035] Driving mechanism 2;

[0036] First conveyor belt 3;

[0037] Second conveyor belt 4;

[0038] First adsorption unit 5;

[0039] Second adsorption unit 6: adsorption block 61, pipe joint 62, air blowing slit 63;

[0040] Driving unit 7: driving member 71, transmission member 72, rotating shaft 73;

[0041] The first pulley group 8: a first driving pulley 81 and a first driven pulley 82;

[0042] Second pulley assembly 9: second driving pulley 91, second driven pulley 92, first supporting drum surface 93, second supporting drum surface 94;

[0043] Position adjustment component 10: fixed 11, movable seat 12, first mounting hole 13, second mounting hole 14, limiting slot 15;

[0044] Protective cover 110 . DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0046] like Figures 1 to 5 As shown, the adsorption conveying device in the embodiment of the present application includes a mounting bracket 1, a driving mechanism 2, a first conveyor belt 3, a second conveyor belt 4, a first adsorption unit 5 and a second adsorption unit 6, wherein:

[0047] The driving mechanism 2 includes a driving part 7, a first pulley group 8 and a second pulley group 9, wherein the first pulley group 8 and the second pulley group 9 are arranged side by side on the mounting bracket 1 along a first direction (such as the X direction), and the first pulley group 8 and the second pulley group 9 are both transmission connected to the driving part 7 arranged on the mounting bracket 1.

[0048] The first pulley assembly 8 has a first conveyor belt installation position, and the first conveyor belt 3 is wound around the first conveyor belt installation position of the first pulley assembly 8. The position of the first conveyor belt 3 cannot be adjusted.

[0049] The second pulley set 9 is provided with two second conveyor belt installation positions spaced apart along the first direction, and the second conveyor belt 4 can be wound around any one of the second conveyor belt installation positions. Figure 1 As shown, the second conveyor belt 4 is wound around the second conveyor belt installation position of the second pulley set 9 close to the first conveyor belt 3, so that the distance between the second conveyor belt 4 and the first conveyor belt 3 is the shorter first distance. Figures 2 to 3 As shown, the second conveyor belt 4 is wound around the second conveyor belt installation position of the second pulley set 9, which is away from the first conveyor belt 3, so that the distance between the second conveyor belt 4 and the first conveyor belt 3 is a longer second distance. Of course, in other embodiments, three, four, or other numbers of second conveyor belt installation positions can also be set on the second pulley set 9.

[0050] The conveying surfaces of the first conveyor belt 3 and the second conveyor belt 4 are located on the same plane, and the driving unit 7 is configured to synchronously drive the first pulley group 8 and the second pulley group 9 to rotate, so as to drive the first conveyor belt 3 and the second conveyor belt 4 to convey along the second direction (such as the Y direction), and the second direction is perpendicular to the first direction.

[0051] The first adsorption unit 5 is arranged on the mounting bracket 1 and is close to the conveying surface of the first conveyor belt 3. The second adsorption unit 6 is installed on the mounting bracket 1 and is close to the conveying surface of the second conveyor belt 2 in an adjustable position along the first direction. The first adsorption unit 5 and the second adsorption unit 6 are used to adsorb the material on the conveying surface of the first conveyor belt 3 and the second conveyor belt 4 to prevent the material from falling during the conveying process.

[0052] As can be seen, in the suction conveying device of the embodiment of the present application, the first conveyor belt 3 and the corresponding first suction unit 5 are fixedly mounted on the mounting bracket 1, while the mounting position of the second conveyor belt 4 on the mounting bracket 1 can be adjusted, thereby adjusting the distance between the second conveyor belt 4 and the first conveyor belt 3. In addition, the position of the second suction unit 6 can also be adjusted along with the second conveyor belt 4. The suction conveying device of the present application can perform suction conveying of webs of different sizes, thereby improving compatibility.

[0053] like Figures 4 and 5 As shown, the first pulley assembly 8 includes a first driving pulley 81 and a plurality of first driven pulleys 82. The first driving pulley 81 and each of the first driven pulleys 82 constitute a first conveyor belt mounting position. The first driving pulley 81 is connected to the movable portion of the driving unit 7. The second pulley assembly 9 includes a second driving pulley 91 and a plurality of second driven pulleys 92. The second driving pulley 91 has two first support drum surfaces 93 spaced apart along a first direction. Each second driven pulley 92 has two second support drum surfaces 94 corresponding to the first support drum surfaces 93. Each first support drum surface 93 and each corresponding second support drum surface 94 constitute a second conveyor belt mounting position. The second driving pulley 91 is connected to the movable portion of the driving unit 7.

[0054] The driving unit 7 drives the first driving wheel 81 and the second driving wheel 91 to rotate synchronously, thereby driving the first conveyor belt 3 and the second conveyor belt 4 to rotate synchronously.

[0055] Of course, in other embodiments, three, four or other numbers of first supporting drum surfaces 93 may be set on the second driving wheel 91, and three, four or other numbers of second supporting drum surfaces 94 may be set on each second driven wheel 92, thereby forming three, four or other numbers of second conveyor belt mounting positions.

[0056] By configuring the second driving wheel 91 and the second driven wheel 92 as drum wheels with at least two supporting drum surfaces, at least two second conveyor belt mounting positions can be formed on the second pulley set 9. The second conveyor belt 4 can be conveniently installed at a suitable second conveyor belt mounting position by manual disassembly and assembly.

[0057] Continue to refer Figures 4 and 5As shown, optionally, the driving unit 7 includes a driving member 71, a transmission member 72, and a rotating shaft 73, wherein the rotating shaft 73 is rotatably connected to the mounting bracket 1 and is connected to the driving member 71 via the transmission member 72. The first driving wheel 81 and the second driving wheel 91 are both fixedly mounted on the rotating shaft 73. The driving member 71 drives the rotating shaft 73 to rotate via the transmission member 72, thereby driving the first driving wheel 81 and the second driving wheel 91 to rotate synchronously.

[0058] By configuring the drive unit 7, only one drive element is required to drive the first driving wheel 81 and the second driving wheel 91 to rotate synchronously, thereby driving the first conveyor belt 3 and the second conveyor belt 4 to rotate synchronously. This reduces the drive cost and ensures the consistency of the conveying speeds of the first conveyor belt 3 and the second conveyor belt 4, ultimately ensuring smooth conveying of the web.

[0059] The driving member 71 can be a motor, for example, and the transmission member 72 can be a synchronous belt assembly consisting of a synchronous belt, a first pulley and a second pulley, wherein the first pulley is fixedly connected to the driving end of the driving member 71, the second pulley is fixedly installed on the rotating shaft 73, and the synchronous belt is sleeved on the first pulley and the second pulley.

[0060] like Figures 1 to 2 As shown, optionally, the second adsorption unit 6 is installed on the mounting bracket 1 via a position adjustment component 10, and the position adjustment component 10 is used to adjust the installation position of the second adsorption unit 6 in the first direction, thereby ensuring that the second adsorption unit 6 can be position-adjusted synchronously with the second conveyor belt 4, and ultimately ensuring that the second adsorption unit 6 remains close to the conveying surface of the second conveyor belt 4.

[0061] like Figure 6 As shown, optionally, the position adjustment assembly 10 includes a fixed seat 11 and a movable seat 12, wherein: the fixed seat 11 is fixedly set on the mounting bracket 1. The movable seat 12 is slidably connected to the fixed seat 11 and can slide on the fixed seat 11 along the first direction, and the second adsorption unit 6 is set on the movable seat 12. Driven by the sliding of the movable seat 12, the second adsorption unit 6 can be switched to any second conveyor belt installation position where the second conveyor belt 4 is located. Specifically, when the second conveyor belt 4 is adjusted from the current second conveyor belt installation position to another second conveyor belt installation position, the second adsorption unit 6 can be adjusted to another second conveyor belt installation position where the second conveyor belt 4 is located by manually pushing the movable seat 12 to slide on the fixed seat 11.

[0062] Optionally, the fixing seat 11 has at least two groups of first mounting holes 13 spaced apart along the first direction, and each group of first mounting holes 13 corresponds to a second conveyor belt mounting position of the second pulley set 9. Figure 6In the embodiment, the fixing seat 11 has two groups of first mounting holes 13 , and the two groups of first mounting holes 13 correspond one-to-one to the two second conveyor belt mounting positions of the second pulley set 9 .

[0063] The movable base 12 is provided with a second mounting hole 14. When the second suction unit 3 slides with the movable base 12 to the appropriate second conveyor belt mounting position, the movable base 12 is secured to the fixed base 11 via screws inserted through the second mounting hole 14 and the corresponding first mounting hole 13. This locks the movable base 12 in place, preventing it from accidentally sliding after being adjusted into position, which could cause the second suction unit 6 to deviate from the conveying surface of the second conveyor belt 4.

[0064] Optionally, a limiting groove 15 is provided on the fixed seat 11, and the movable seat 12 is located in the limiting groove 15 and moves along the limiting groove 15. The limiting groove 15 realizes the sliding guide of the movable seat 12, preventing the movable seat 12 from deviating during the sliding process.

[0065] Optionally, the second adsorption unit 6 has the same structure as the first adsorption unit 5. Figure 6 As shown, the second adsorption unit 6 includes an adsorption block 61 and a pipe joint 62. An air cavity is formed within the adsorption block 61. A blow slit 63 is provided on one side of the adsorption block 61. The blow slit 63 communicates with the air cavity, which in turn communicates with an air source via the pipe joint 62. The air source supplies air into the air cavity, and the air in the air cavity flows out through the blow slit 63, generating negative pressure based on the Bernoulli effect. This negative pressure causes the web to adhere to the conveying surfaces of the first and second conveyor belts 3 and 4.

[0066] During specific installation, the air blowing seam 63 is arranged on the upper surface of the adsorption block 61, and the upper surface of the adsorption block 61 is lower than the conveying surface of the first conveyor belt 3 and the second conveyor belt 4. The first adsorption unit 5 and the second adsorption unit 6 adsorb the material on the conveying surface of the first conveyor belt 3 and the second conveyor belt 4 in a non-contact manner through the Bernoulli effect. In this way, when the first conveyor belt 3 and the second conveyor belt 4 are conveying the material, the first adsorption unit 5 and the second adsorption unit 6 will not cause friction and wear to the material.

[0067] like Figures 1 to 3As shown, optionally, the adsorption conveying device of the present application further includes a protective cover plate 4 located between the conveying surfaces of the first conveyor belt 3 and the second conveyor belt 4, and the protective cover plate 4 is detachably arranged on the mounting bracket 1. By providing the protective cover plate 4, protection of components such as the first pulley group 8 and the second pulley group 9 is achieved. After removing the protective cover plate 4, maintenance of components such as the first pulley group 8 and the second pulley group 9, as well as position adjustment of the second conveyor belt 4 can be conveniently implemented. When the position of the second conveyor belt 4 is adjusted to a shorter first spacing between the second conveyor belt 4 and the first conveyor belt 3, a smaller area of ​​the protective cover plate 4 can be matched, and when the position of the second conveyor belt 4 is adjusted to a longer second spacing between the second conveyor belt 4 and the first conveyor belt 3, a larger area of ​​the protective cover plate 4 can be switched.

[0068] The above description of the present application is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and that all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the above description in the embodiments. Furthermore, the embodiments mentioned in the present application are not limited to being implemented individually, and some embodiments can also be implemented in combination.

Claims

1. An adsorption conveying device, characterized in that: The adsorption conveying device includes a mounting bracket, a driving mechanism, a first conveyor belt, a second conveyor belt, a first adsorption unit and a second adsorption unit, wherein: The driving mechanism includes a driving portion, a first pulley group and a second pulley group, wherein the first pulley group and the second pulley group are arranged side by side on the mounting bracket along a first direction, and the first pulley group and the second pulley group are both transmission-connected to the driving portion arranged on the mounting bracket, the first pulley group has a first conveyor belt mounting position, and the second pulley group has at least two second conveyor belt mounting positions spaced apart along the first direction; The first conveyor belt is wound around the first conveyor belt installation position of the first pulley group, and the second conveyor belt is wound around any second conveyor belt installation position of the second pulley group. The conveying surfaces of the first conveyor belt and the second conveyor belt are located on the same plane. The driving unit is configured to synchronously drive the first pulley group and the second pulley group to rotate, so as to drive the first conveyor belt and the second conveyor belt to convey along a second direction, wherein the second direction is perpendicular to the first direction. The first adsorption unit is arranged on the mounting bracket and is close to the conveying surface of the first conveyor belt. The second adsorption unit is installed on the mounting bracket and is close to the conveying surface of the second conveyor belt so as to be adjustably positioned along the first direction. The first adsorption unit and the second adsorption unit are used to adsorb the material sheet on the conveying surfaces of the first conveyor belt and the second conveyor belt.

2. The adsorption conveying device according to claim 1, characterized in that: The first pulley assembly includes a first driving wheel and a plurality of first driven wheels, the first driving wheel and the first driven wheels constitute the first conveyor belt installation position, and the first driving wheel is connected to the movable part of the driving part; The second pulley group includes a second driving wheel and several second driven wheels, the second driving wheel has at least two first supporting drum surfaces arranged at intervals along the first direction, each second driven wheel has at least two second supporting drum surfaces corresponding to the first supporting drum surfaces one by one, each first supporting drum surface and the corresponding second supporting drum surfaces constitute a second conveyor belt mounting position, and the second driving wheel is connected to the movable part of the driving part.

3. The adsorption conveying device according to claim 2, characterized in that: The driving part includes a driving member, a transmission member and a rotating shaft, wherein: The rotating shaft is rotatably connected to the mounting bracket and is connected to the driving member via the transmission member. The first driving wheel and the second driving wheel are both fixedly mounted on the rotating shaft. The driving member drives the rotating shaft to rotate via the transmission member, so as to drive the first driving wheel and the second driving wheel to rotate synchronously.

4. The adsorption conveying device according to claim 1, wherein: The second adsorption unit is installed on the mounting bracket via a position adjustment component, and the position adjustment component is used to adjust the installation position of the second adsorption unit in the first direction.

5. The adsorption conveying device according to claim 4, characterized in that: The position adjustment assembly includes a fixed seat and a movable seat, wherein: The fixing seat is fixedly arranged on the mounting bracket; The movable seat is slidably connected to the fixed seat and can slide on the fixed seat along the first direction, and the second adsorption unit is arranged on the movable seat; The second adsorption unit is configured to switch to any second conveyor belt installation position under the sliding drive of the movable seat.

6. The adsorption conveying device according to claim 5, characterized in that: The fixing seat has at least two groups of first mounting holes spaced apart along the first direction, and each group of first mounting holes corresponds to a second conveyor belt mounting position of the second pulley assembly; The movable seat is provided with a second mounting hole; When the second adsorption unit is switched to any second conveyor belt installation position, the movable seat is fixed to the fixed seat via screws passing through the second installation hole and the first installation hole.

7. The adsorption conveying device according to claim 5, characterized in that: The fixed seat is provided with a limiting groove, and the movable seat is located in the limiting groove and moves along the limiting groove.

8. The adsorption conveying device according to claim 1, wherein: The second adsorption unit has the same structure as the first adsorption unit. The first adsorption unit includes an adsorption block and a pipe joint. An air cavity is formed in the adsorption block. A blowing slot is provided on one side of the adsorption block. The blowing slot is connected to the air cavity. The air cavity is connected to an air source via the pipe joint. The air source supplies air to the air cavity, and the gas in the air cavity flows out from the blowing slot to generate negative pressure based on the Bernoulli effect. The negative pressure causes the sheet to be adsorbed on the conveying surfaces of the first conveyor belt and the second conveyor belt.

9. The adsorption conveying device according to claim 1, wherein: The adsorption conveying device further includes a protective cover plate located between the conveying surfaces of the first conveyor belt and the second conveyor belt, and the protective cover plate is detachably arranged on the mounting bracket.

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