Sheet body rotating device

Abstract

The utility model provides a sheet body rotating device. The sheet body rotating device comprises a mounting bracket, an adsorption assembly, a first rotating assembly and a second rotating assembly, the adsorption assembly is arranged on the mounting bracket and is provided with an adsorption surface for adsorbing a sheet body; the first rotating assembly is arranged on the mounting bracket, and the first rotating assembly is provided with a first contact part protruding out of the adsorption surface; the second rotating assembly is arranged on the mounting bracket, and the second rotating assembly is provided with a second contact part protruding out of the adsorption surface; when the adsorption assembly adsorbs the sheet body, the sheet body abuts against the first contact part and the second contact part at the same time, and the first contact part and the second contact part are configured to rotate at different speeds so as to drive the sheet body to rotate. According to the sheet body rotating device, the first rotating assembly and the second rotating assembly drive the sheet body to rotate, and the adsorption assembly is only used for adsorbing the sheet body and does not rotate. Compared with an existing rotating device, the sheet body rotating device has the advantages that the rotating load can be reduced, and the rotating efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic cell production equipment, and specifically to a sheet rotating device. Background Art

[0002] In order to realize the conveying of wafers (such as silicon wafers) and adjust the angle of the wafers at any time, the existing processing method is to set a rotating device above the conveyor line. The rotating device sucks the wafer from the conveyor line, rotates the wafer to a predetermined angle, and then puts the wafer back to the conveyor line.

[0003] Existing rotating devices generally include a rotating drive component and an adsorption component. The driving end of the rotating drive component is connected to the adsorption component. The adsorption component sucks up the sheet on the conveyor line. After the rotating drive component drives the adsorption component and the sheet to rotate a predetermined angle, the adsorption component releases the sheet back to the conveyor line.

[0004] The problem with existing rotating devices is that during rotation, the driving end of the rotating drive assembly needs to drive the entire adsorption assembly to rotate. Due to the heavy weight of the adsorption assembly, the driving end of the rotating drive assembly has a large rotational load, which ultimately results in low rotation efficiency of the sheet. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides an adsorption conveying device, which adopts the following technical solutions:

[0006] A sheet rotating device includes a mounting bracket, an adsorption assembly, a first rotating assembly, and a second rotating assembly, wherein:

[0007] The adsorption component is arranged on the mounting bracket, and the adsorption component has an adsorption surface for adsorbing the sheet;

[0008] The first rotating assembly is disposed on the mounting bracket, and the first rotating assembly has a first contact portion protruding from the adsorption surface;

[0009] The second rotating assembly is disposed on the mounting bracket, and the second rotating assembly has a second contact portion protruding from the adsorption surface;

[0010] When the adsorption component adsorbs the sheet, the sheet abuts against the first contact portion and the second contact portion simultaneously. The first contact portion and the second contact portion are configured to rotate at different speeds to drive the sheet to rotate.

[0011] The sheet rotation device provided by the present application is driven by the first and second rotating components to rotate the sheet, while the adsorption component is only used to adsorb the sheet and does not rotate. Compared with existing rotation devices, the sheet rotation device of the present application can reduce the rotation load and improve the rotation efficiency.

[0012] In some embodiments, the second rotating component has the same structure as the first rotating component, and the first rotating component includes a driving member, a pulley group and a belt, wherein: the pulley group is arranged on the mounting bracket and is transmission-connected to the driving member arranged on the mounting bracket; at least one pulley in the pulley group protrudes from the adsorption surface, and the belt is wound around the pulley group, and the pulley protruding from the adsorption surface and the belt supported by it together form a first contact portion; when the adsorption component adsorbs the sheet body, the sheet body abuts against the belt located at the first contact portion.

[0013] The driving components of the first rotating assembly and the second rotating assembly drive the corresponding pulleys and belts to rotate at different speeds, thereby driving the sheet adsorbed by the adsorption assembly to rotate, and the angle of the sheet can be adjusted.

[0014] In some embodiments, two pulleys in the pulley assembly protrude from the adsorption surface, and the two pulleys protruding from the adsorption surface and the belts supported by the two pulleys jointly form a first contact portion.

[0015] The first rotating assembly and the second rotating assembly both support the sheet body at different positions through two pulleys and push the sheet body to rotate, thereby improving the rotation stability of the sheet body and preventing the sheet body from slipping.

[0016] In some embodiments, the second rotating component has the same structure as the first rotating component. The first rotating component includes a driving member and at least one roller. The roller is arranged on the mounting bracket and is transmission-connected to the driving member. The roller protrudes from the adsorption surface to form a first contact portion. When the adsorption component adsorbs the sheet, the sheet abuts against the roller.

[0017] The driving members of the first rotating assembly and the second rotating assembly drive the corresponding rollers to rotate at different speeds, thereby driving the sheet adsorbed by the adsorption assembly to rotate, and the angle of the sheet can be adjusted.

[0018] In some embodiments, the adsorption component includes an adsorption block, and the adsorption surface is a side surface of the adsorption block; at least two avoidance grooves are provided on the adsorption block and penetrate the adsorption block, and the first contact part of the first rotating component and the second contact part of the second rotating component protrude from the adsorption surface through at least one avoidance groove respectively; an air cavity connected to an external compressed air source is provided in the adsorption block, and an air blowing seam connected to the air cavity is provided on the adsorption surface. After the compressed gas enters the air cavity, it is blown out through the air blowing seam, so that the sheet is adsorbed on the adsorption surface in a non-contact manner based on the negative pressure generated by the Bernoulli effect.

[0019] By providing a clearance groove on the adsorption block, the first contact portion of the first rotating component and the second contact portion of the second rotating component can protrude from the adsorption surface of the adsorption block to contact the adsorbed sheet. Furthermore, the adsorption surface of the adsorption block can be made sufficiently large to improve the stability of the adsorption of the sheet. A gap exists between the sheet supported by the first and second contact portions and the adsorption surface of the adsorption block. This configuration of the adsorption block allows the adsorption block to implement non-contact adsorption of the sheet based on the Bernoulli effect, ensuring the strength of the adsorption of the sheet while preventing friction from hindering the sheet's rotation.

[0020] In some embodiments, the adsorption block includes: a circular base body, at least two avoidance grooves are arranged on the base body along the circumference, and a first air cavity and a second air cavity located inside the first air cavity are arranged on the base body between the two adjacent avoidance grooves, and each first air cavity and the second air cavity are connected to an external compressed air source; a first cover body, at least two first cover plates corresponding to the first air cavity are arranged on the first cover body along the circumference, the first cover body is detachably mounted on the edge of the base body, each first cover plate covers the corresponding first air cavity, and a first air blowing gap is formed at the covering edge of the first cover plate and the corresponding first air cavity; a second cover body, at least two second cover plates corresponding to the second air cavity are arranged on the second cover body along the circumference, the second cover body is detachably mounted in the middle of the base body, each second cover plate covers the corresponding second air cavity, and a second air blowing gap is formed at the covering edge of the second cover plate and the corresponding second air cavity; each second cover plate and one side surface of each first cover body constitute an adsorption surface.

[0021] By setting the adsorption block as a split structure consisting of a base body, a first cover body and a second cover body, the processing and forming of the first air cavity, the second air cavity, the first air blowing seam and the second air blowing seam are facilitated, and ultimately the adsorption block can implement non-contact adsorption of the sheet based on the Bernoulli effect.

[0022] In some embodiments, the second cover and the base are provided with mutually communicating accommodating cavities; the adsorption assembly further comprises a supporting assembly, the supporting assembly is located in the accommodating cavity, and the supporting assembly has a supporting surface for supporting the sheet.

[0023] By setting up the support assembly, the adsorbed sheet is supported to prevent the sheet from cracking due to uneven force.

[0024] In some embodiments, the support assembly includes a support member and a bearing. The support member is rotatably mounted in the accommodating cavity via the bearing, and a side surface of the support member constitutes a support surface.

[0025] The support member can rotate with the sheet body to prevent the support member from causing friction damage to the sheet body.

[0026] In some embodiments, the adsorption block is rectangular, and at least one avoidance groove is respectively provided at the opposite first side and second side of the adsorption block, wherein the avoidance groove at the first side of the adsorption block is used to avoid the first contact part of the first rotating component, and the avoidance groove at the second side of the adsorption block is used to avoid the second contact part of the second rotating component; the blowing seam is provided at the four edges of the adsorption block.

[0027] The adsorption blocks are designed so that the first contact point of the first rotating assembly and the second contact point of the second rotating assembly protrude from the adsorption surface of the blocks. This also ensures a sufficiently large adsorption surface area to enhance the stability of the adsorption of the wafer. Furthermore, the adsorption blocks are designed to provide non-contact adsorption of the wafer based on the Bernoulli effect, ensuring strong adsorption while preventing frictional damage to the wafer caused by the adsorption blocks during rotation.

[0028] In some embodiments, the adsorption assembly includes a Bernoulli suction cup, and the first rotation assembly and the second rotation assembly are located on opposite sides of the Bernoulli suction cup.

[0029] Directly using the Bernoulli suction cup as the adsorption component makes the structure of the sheet rotating device of the present application simpler and the assembly and maintenance more convenient.

[0030] In some embodiments, the sheet rotation device further includes at least one sensor disposed on a mounting bracket, and the sensor is signal-connected to the first rotating component and the second rotating component; the sensor is configured to obtain position information of the sheet, and the first rotating component and the second rotating component are configured to adjust their respective rotation speeds based on the position information of the sheet to adjust the angle of the sheet.

[0031] By providing the sensor, the position of the sheet body is detected in real time, and finally it is ensured that the first rotating assembly and the second rotating assembly can implement accurate adjustment of the angle of the sheet body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of the sheet rotating device in the first embodiment of the present application;

[0033] Figure 2 This is a schematic structural diagram of a sheet rotating device with a sheet adsorbed thereon in the first embodiment of the present application;

[0034] Figure 3 This is a schematic structural diagram of the first rotating assembly in the first embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the front structure of the adsorption block in the first embodiment of the present application;

[0036] Figure 5This is a schematic diagram of the disassembled structure of the adsorption block in the first embodiment of the present application;

[0037] Figure 6 This is a schematic diagram of the back structure of the adsorption block in the first embodiment of the present application;

[0038] Figure 7 This is a schematic structural diagram of the support assembly in the first embodiment of the present application;

[0039] Figure 8 is a cross-sectional schematic diagram of the support assembly in the first embodiment of the present application;

[0040] Figure 9 This is a schematic structural diagram of a sheet rotating device in a second embodiment of the present application;

[0041] Figure 10 This is a schematic structural diagram of a sheet rotating device in the third embodiment of the present application.

[0042] Figures 1 to 10 Included are:

[0043] Mounting bracket 1;

[0044] Adsorption component 2;

[0045] Adsorption block 21: avoidance groove 210, base body 211, first air cavity 212, second air cavity 213, first cover body 214, first air blowing slit 215, second cover body 216, second air blowing slit 217, first cover plate 218, second cover plate 219, first joint 2110, second joint 2120, air blowing slit 2130;

[0046] Support assembly 22: support member 221, bearing 222, protection pad 223;

[0047] Bernoulli cup 23;

[0048] First rotating assembly 3: driving member 31, pulley assembly 32, belt 33;

[0049] A second rotating assembly 4;

[0050] Sensor 5;

[0051] Sheet 100. DETAILED DESCRIPTION

[0052] 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.

[0053] Figure 1 、 Figure 9 and Figure 10The sheet rotating device in one embodiment of the present application is shown in FIG. Figure 1 、 Figure 9 and Figure 10 As shown, the sheet rotating device in the embodiment of the present application includes a mounting bracket 1, an adsorption assembly 2, a first rotating assembly 3 and a second rotating assembly 4, wherein:

[0054] The adsorption component 2 is arranged on the mounting bracket 1 , and the adsorption component 2 has an adsorption surface for adsorbing the sheet.

[0055] The first rotating assembly 2 is disposed on the mounting bracket 1 and has a first contact portion protruding from the adsorption surface. The second rotating assembly 3 is disposed on the mounting bracket 1 and has a second contact portion protruding from the adsorption surface.

[0056] like Figure 2 As shown, when the adsorption component 2 adsorbs the sheet 100 , the sheet 100 abuts against the first contact portion and the second contact portion simultaneously. The first contact portion and the second contact portion are configured to rotate at different speeds, thereby driving the sheet 100 to rotate.

[0057] The sheet rotating device provided in the embodiment of the present application is driven by the first rotating component 3 and the second rotating component 4 to rotate the sheet 100, while the adsorption component 2 is only used to adsorb the sheet 100 and does not rotate. Since there is no need to drive the adsorption component 2 to rotate, the sheet rotating device of the present application can reduce the rotation load and improve the rotation efficiency of the sheet 100 compared to the existing rotation device. Figures 1 to 2 As shown, the second rotating assembly 4 optionally has the same structure as the first rotating assembly 3. Taking the first rotating assembly 3 as an example, it includes a driving member 31, a pulley assembly 32, and a belt 33. The pulley assembly 32 is disposed on the mounting bracket 1 and is in transmission connection with the driving member 31 disposed on the mounting bracket 1. At least one pulley in the pulley assembly 32 protrudes from the adsorption surface of the adsorption assembly 2. The belt 33 is wound around the pulley assembly 32. The pulley protruding from the adsorption surface and the belt 33 supported by it together form a first contact portion. Similarly, the pulley protruding from the adsorption surface of the second rotating assembly 4 and the belt 33 supported by it together form a second contact portion.

[0058] When the suction assembly 2 attracts the sheet 100, the sheet 100 contacts the belt 33 at the first contact portion and the belt 33 at the second contact portion. The driving components 31 of the first and second rotating assemblies 3 and 4 rotate the corresponding pulleys and belts 33 at different speeds, pushing the sheet 100 to rotate horizontally, thereby adjusting the angle of the sheet 100.

[0059] Still using the first rotating assembly 3 as an example, optionally, two pulleys in the pulley assembly 32 protrude from the suction surface of the suction assembly 2. The two pulleys protruding from the suction surface and the belts 33 supported by the two pulleys together form a first contact point. The belts 33 on the two pulleys support and push the sheet 100 from two different positions, thereby improving the rotational stability of the sheet 100 and preventing slippage of the sheet 100.

[0060] In another embodiment, both the first rotating assembly 3 and the second rotating assembly 4 are composed of a driving member and at least one roller. Taking the first rotating assembly 3 as an example, the roller is mounted on the mounting bracket 1 and is in transmission connection with the driving member. The roller protrudes from the adsorption surface of the adsorption assembly 2 to form a first contact portion. Similarly, the roller of the second rotating assembly 4 protrudes from the adsorption surface of the adsorption assembly 2 to form a second contact portion.

[0061] When the suction assembly 2 attracts the sheet 100, the sheet 100 abuts against the rollers of the first rotating assembly 3 and the second rotating assembly 4. The driving components of the first rotating assembly 3 and the second rotating assembly 4 drive the corresponding rollers to rotate at different speeds, pushing the sheet 100 to rotate, thereby adjusting the angle of the sheet 100.

[0062] like Figure 4 and Figure 9 As shown, optionally, the adsorption assembly 2 includes an adsorption block 21, and the adsorption surface is a side surface (e.g., an upper side surface) of the adsorption block 21. The adsorption block 21 is provided with at least two avoidance grooves 210 that penetrate the adsorption block 21. The first contact portion of the first rotating assembly 3 and the second contact portion of the second rotating assembly 4 are respectively protruded from the adsorption surface via at least one avoidance groove 210.

[0063] For example, Figure 4 and Figure 9 In the illustrated embodiment, the first contact portion of the first rotating assembly 3 and the second contact portion of the second rotating assembly 4 are each formed by two pulleys and a belt protruding from the suction surface. Accordingly, the suction block 21 is provided with four escape grooves 210. The first contact portion of the first rotating assembly 3 protrudes from the suction surface through two of the escape grooves 210, and the second contact portion of the second rotating assembly 4 protrudes from the suction surface through the other two escape grooves 210. Of course, if the first contact portion of the first rotating assembly 3 and the second contact portion of the second rotating assembly 4 are formed by only one pulley and a belt protruding from the suction surface, then only two escape grooves 210 are required on the suction block 21.

[0064] By providing an avoidance groove 210 on the adsorption block 21, it is ensured that the first contact portion of the first rotating component 3 and the second contact portion of the second rotating component 4 can protrude from the adsorption surface of the adsorption block 21, and at the same time, the area of ​​the adsorption surface of the adsorption block 21 is large enough to improve the adsorption stability of the sheet 100.

[0065] In addition, an air cavity connected to an external compressed air source is provided in the adsorption block 21, and an air blowing slit connected to the air cavity is provided on the adsorption surface of the adsorption block 21. After the compressed gas enters the air cavity, it is blown out through the air blowing slit, so that the sheet 100 is adsorbed on the adsorption surface in a non-contact manner based on the negative pressure generated by the Bernoulli effect.

[0066] Because the first and second contact portions protrude from the adsorption surface of the adsorption block 21, a gap exists between the sheet 100 supported on the first and second contact portions and the adsorption surface of the adsorption block 21. This configuration of the adsorption block 21 allows the adsorption block 21 to perform non-contact adsorption of the sheet 100 based on the Bernoulli effect. Furthermore, because the adsorption surface of the adsorption block 21 does not contact the sheet 100, frictional damage caused by the rotation of the sheet 100 by the adsorption block 21 is prevented.

[0067] Figures 4 and 5 In the embodiment shown, the adsorption block 21 is configured in a disc shape, and includes a base 211, a first cover 214, and a second cover 216.

[0068] Four avoidance grooves 210 are circumferentially provided on the seat body 211. A first air cavity 212 and a second air cavity 213 located inside the first air cavity 212 are provided on the seat body 211 between two adjacent avoidance grooves 210. Each first air cavity 212 and second air cavity 213 is connected to an external compressed air source.

[0069] Four first cover plates 218 corresponding to the first air cavities 212 are circumferentially arranged on the first cover body 214. The first cover body 214 is detachably mounted on the edge of the base body 211. Each first cover plate 218 covers the corresponding first air cavity 212. A first blowing gap 215 is formed at the covering edge of the first cover plate 218 and the corresponding first air cavity 212.

[0070] Four second cover plates 219 corresponding to the second air cavities 213 are circumferentially arranged on the second cover body 216. The second cover body 216 is detachably installed in the middle part of the base body 211. Each second cover plate 219 covers the corresponding second air cavity 213. A second blowing seam 217 is formed at the covering edge of the second cover plate 219 and the corresponding second air cavity 213.

[0071] One side surface (eg, upper side surface) of the four second cover plates 219 and the four first cover plates 218 constitutes an adsorption surface of the adsorption block 21 .

[0072] By configuring the adsorption block 21 as a split structure consisting of a base 211, a first cover 214, and a second cover 216, the processing and forming of Bernoulli components such as the first air cavity 212, the second air cavity 213, the first air blowing slit 215, and the second air blowing slit 217 are facilitated, ultimately enabling the adsorption block 21 to implement non-contact adsorption of the sheet 100 based on the Bernoulli effect. In addition, the inner ring of air blowing slits formed by the four first air blowing slits 215 and the outer ring of air blowing slits formed by the four second air blowing slits 217 can be blown synchronously, thereby enhancing the adsorption strength of the adsorption block 21 on the sheet 100.

[0073] In other embodiments, other numbers of avoidance grooves 210, first cover plates 218, and second cover bodies 216 may be provided depending on the specific configuration of the first contact portion of the first rotating assembly 3 and the second contact portion of the second rotating assembly 4. For example, if the first rotating assembly 3 and the second rotating assembly 4 consist of only a pulley and a belt protruding from the adsorption surface of the adsorption assembly 2, two avoidance grooves 210, two first cover plates 218, and two second cover plates 219 may be provided.

[0074] like Figure 6 As shown, in order to achieve ventilation of each first air cavity 212 and second air cavity 213, the base body 211 is provided with a first connector 2110 that is in one-to-one communication with each first air cavity 212. Each first connector 2110 is connected to an external compressed air source via an air pipe to pass compressed gas into the corresponding first air cavity 212. Similarly, the base body 211 is also provided with a second connector 2120 that is in one-to-one communication with each second air cavity 213. Each second connector 2120 is connected to an external compressed air source via an air pipe to pass compressed gas into the corresponding second air cavity 213.

[0075] like Figure 4 and Figure 5 As shown, optionally, a mutually communicating accommodation cavity is provided on the second cover 216 and the base 211. The adsorption assembly 2 further includes a support assembly 22, which is located in the accommodation cavity and has a support surface for supporting the sheet 100.

[0076] By providing the support assembly 22, the sheet 100 being adsorbed is supported, preventing the sheet 100 from cracking due to uneven force. That is, the support assembly 22, the first contact portion of the first rotating assembly 3, and the second contact portion of the second rotating assembly 4 cooperate to support the sheet 100 from different positions.

[0077] like Figure 7 and Figure 8As shown, the support assembly 22 optionally includes a support member 221 and a bearing 222. The support member 221 is rotatably mounted within the accommodating cavity via the bearing 222, with one side surface of the support member 221 constituting a support surface. This arrangement allows the support member 221 to rotate with the sheet 100, preventing frictional damage to the sheet 100 caused by the support member 221. To further reduce wear on the sheet 100, a protective pad 223 is optionally provided on the support surface of the support member 221. The protective pad 223 can be made of PU.

[0078] Figure 9 In the illustrated embodiment, the adsorption block 21 is configured as a rectangle, and two avoidance grooves 210 are respectively provided on the first and second opposite sides of the adsorption block 21. The two avoidance grooves 210 on the first side of the adsorption block 21 are used to avoid the first contact portion of the first rotating component 3, and the avoidance groove on the second side of the adsorption block 21 is used to avoid the second contact portion of the second rotating component 4. Blowing slits 2130 are provided on all four edges of the adsorption block 21. When compressed gas is introduced into the air cavity inside the adsorption block 21, the compressed gas is blown out through the blowing slits 2130 on the four edges, thereby generating an adsorption force on the adsorption surface of the adsorption block 21.

[0079] In order to make the structure of the sheet rotating device of the present application simpler and the assembly and maintenance more convenient. Figure 10 As shown, the Bernoulli suction cup 23 can also be directly used as the adsorption component 2. The first rotating component 3 and the second rotating component 4 are located on opposite sides of the Bernoulli suction cup 23. Of course, the first contact portion of the first rotating component 3 and the second contact portion of the second rotating component 4 need to protrude from the adsorption surface of the Bernoulli suction cup 23.

[0080] like Figure 1 and Figure 2 As shown, the sheet rotation device in the embodiment of the present application optionally further includes at least one sensor 5 disposed on the mounting bracket 1, and the sensor 5 is signal-connected to the first rotating assembly 3 and the second rotating assembly 4. The sensor 5 is configured to obtain position information of the sheet 100, and the first rotating assembly 3 and the second rotating assembly 4 are configured to adjust their respective rotation speeds based on the position information of the sheet 100 to adjust the angle of the sheet 100.

[0081] like Figure 1 As shown, multiple sensors 5 can be set circumferentially around the outer periphery of the disc-shaped adsorption block 21. By setting the sensors 5, real-time detection of the position of the sheet 100 is achieved, ultimately ensuring that the first rotating component 3 and the second rotating component 4 can implement precise adjustment of the angle of the sheet 100.

[0082] During the cell production process, the wafer 100 may be a silicon wafer or a cell. The wafer rotation device of the present application may be used to rotate the silicon wafer or cell by 90° to meet subsequent testing and other processing requirements.

[0083] During specific control, one or more sensors 5 can be used to determine the initial position of the sheet 100, that is, after the sheet 100 is placed in the initial position, the first rotating assembly 3 and the second rotating assembly 4 start to rotate, that is, drive the sheet 100 to start rotating. When other sensors 5 are used to determine that the sheet 100 has reached the target position, that is, after the sheet 100 has rotated to the right position, the first rotating assembly 3 and the second rotating assembly 4 stop rotating, that is, the angle adjustment of the sheet 100 is achieved.

[0084] 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. A sheet rotating device, characterized in that: The sheet rotating device includes a mounting bracket, an adsorption assembly, a first rotating assembly, and a second rotating assembly, wherein: The adsorption component is arranged on the mounting bracket, and the adsorption component has an adsorption surface for adsorbing the sheet; The first rotating component is disposed on the mounting bracket, and the first rotating component has a first contact portion protruding from the adsorption surface; The second rotating component is disposed on the mounting bracket, and the second rotating component has a second contact portion protruding from the adsorption surface; When the adsorption component adsorbs the sheet, the sheet abuts against the first contact portion and the second contact portion simultaneously. The first contact portion and the second contact portion are configured to rotate at different speeds to drive the sheet to rotate.

2. The sheet rotating device according to claim 1, wherein: The second rotating assembly has the same structure as the first rotating assembly, and the first rotating assembly includes a driving member, a pulley set, and a belt, wherein: The pulley assembly is arranged on the mounting bracket and is in transmission connection with the driving member arranged on the mounting bracket; At least one pulley in the pulley assembly protrudes from the adsorption surface, the belt is wound around the pulley assembly, and the pulley protruding from the adsorption surface and the belt supported by the pulley together form the first contact portion; When the adsorption component adsorbs the sheet, the sheet abuts against the belt located at the first contact portion.

3. The sheet rotating device according to claim 2, wherein: Two pulleys in the pulley set protrude from the adsorption surface, and the two pulleys protruding from the adsorption surface and the belts supported by the two pulleys jointly form the first contact portion.

4. The sheet rotating device according to claim 1, wherein: The second rotating assembly has the same structure as the first rotating assembly. The first rotating assembly includes a driving member and at least one roller. The roller is disposed on the mounting bracket and is in transmission connection with the driving member. The roller protrudes from the adsorption surface to form the first contact portion. When the adsorption component adsorbs the sheet, the sheet abuts against the roller.

5. The sheet rotating device according to claim 1, wherein: The adsorption component includes an adsorption block, and the adsorption surface is a side surface of the adsorption block; The adsorption block is provided with at least two avoidance grooves penetrating the adsorption block, and the first contact portion of the first rotating component and the second contact portion of the second rotating component protrude from the adsorption surface via at least one of the avoidance grooves; An air cavity connected to an external compressed air source is provided in the adsorption block, and an air blowing slot connected to the air cavity is provided on the adsorption surface. After the compressed gas enters the air cavity, it is blown out through the air blowing slot, so that the sheet is non-contactly adsorbed on the adsorption surface by the negative pressure generated by the Bernoulli effect.

6. The sheet rotating device according to claim 5, wherein: The adsorption block comprises: A circular seat body, wherein at least two avoidance grooves are provided on the seat body along the circumference thereof, and a first air cavity and a second air cavity located inside the first air cavity are provided on the seat body between two adjacent avoidance grooves, and each of the first air cavity and each of the second air cavity are connected to an external compressed air source; A first cover body, wherein at least two first cover plates corresponding to the first air cavities are circumferentially provided on the first cover body, the first cover body being detachably mounted on an edge of the base body, each of the first cover plates covering the corresponding first air cavity, and a first blowing gap being formed at the covering edge of the first cover plate and the corresponding first air cavity; A second cover body, wherein at least two second cover plates corresponding to the second air cavities are circumferentially arranged on the second cover body, and the second cover body is detachably mounted on the middle portion of the base body, and each second cover plate covers the corresponding second air cavity, and a second blowing gap is formed at the covering edge of the second cover plate and the corresponding second air cavity; The second cover plates and one side surface of the first cover bodies form the adsorption surface.

7. The sheet rotating device according to claim 6, wherein: The second cover body and the base body are provided with mutually communicating accommodation cavities; The adsorption assembly further includes a support assembly, which is located in the accommodating cavity and has a support surface for supporting the sheet.

8. The sheet rotating device according to claim 7, wherein: The support assembly includes a support member and a bearing. The support member is rotatably installed in the accommodating cavity via the bearing. One side surface of the support member constitutes the support surface.

9. The sheet rotating device according to claim 5, wherein: The adsorption block is rectangular, and at least one avoidance groove is respectively provided on a first side and a second side of the adsorption block. The avoidance groove on the first side of the adsorption block is used to avoid a first contact portion of the first rotating component, and the avoidance groove on the second side of the adsorption block is used to avoid a second contact portion of the second rotating component. The air blowing slits are arranged at the edges of the adsorption block.

10. The sheet rotating device according to claim 1, wherein: The adsorption component includes a Bernoulli suction cup, and the first rotation component and the second rotation component are located on opposite sides of the Bernoulli suction cup.

11. The sheet rotating device according to any one of claims 1 to 10, characterized in that: The sheet rotating device further comprises at least one sensor provided on the mounting bracket, wherein the sensor is signal-connected to the first rotating assembly and the second rotating assembly; The sensor is configured to obtain position information of the sheet, and the first rotating assembly and the second rotating assembly are configured to adjust their respective rotation speeds based on the position information of the sheet to adjust the angle of the sheet.

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