Bearing device

Abstract

The utility model discloses a bearing device, and relates to the technical field of production equipment. The bearing device comprises a frame, bearing parts and an elastic suction assembly, the multiple bearing parts are connected to the frame, cavities are formed in the bearing parts and the frame and communicate with one another, the bearing parts are provided with supporting faces used for supporting the sheet materials, suction holes are formed in the supporting faces, and the suction holes communicate with the cavities in the bearing parts. The elastic suction assembly is arranged on the frame, a suction cavity is formed in the elastic suction assembly, the suction cavity is communicated with the cavity in the frame, and the suction cavity tends to become larger under the elastic action of the elastic suction assembly so as to be used for sucking gas in the bearing piece and the frame. In the embodiment of the invention, the sheet-shaped material on the bearing part can bear the adsorption force of the suction holes, so that the sheet-shaped material can be reliably attached to the supporting surface of the bearing part, the risk that the sheet-shaped material is damaged due to shaking relative to the bearing device in the conveying process is reduced, and the yield of products is improved.

Description

Technical Field

[0001] This application relates to the field of production equipment technology, and more specifically, to a support device. Background Technology

[0002] In the production process, the transportation of sheet materials often relies on carrier devices. After the sheet materials are loaded into the carrier devices, conveying equipment is used to transport the carrier devices containing the sheet materials. Taking the photovoltaic industry as an example, silicon wafers or solar cells (i.e., sheet materials) can be loaded into baskets (i.e., carrier devices) for transportation. However, when vibrations occur during the transportation process in the carrier devices, the sheet materials will sway relative to the carrier devices, which can easily lead to damage to the sheet materials due to friction and impact.

[0003] In view of the above, this application is hereby submitted. Utility Model Content

[0004] The purpose of this application is to provide a carrying device that can improve the stability of sheet materials in the carrying device, thereby reducing damage to the sheet materials during transportation.

[0005] The embodiments of this application can be implemented as follows:

[0006] This application provides a support device for supporting sheet materials, including a frame, support members and an elastic suction assembly. Multiple support members are connected to the frame. Both the support members and the frame have cavities and are interconnected. The support members have a support surface for supporting sheet materials. Suction holes are opened on the support surface and are connected to the cavities inside the support members.

[0007] An elastic suction assembly is disposed on the frame and forms a compressible suction chamber. The suction chamber is connected to the cavity inside the frame. The compressed suction chamber tends to expand under the elastic action of the elastic suction assembly to suction gas from the load-bearing component and the frame.

[0008] In an optional embodiment, the elastic suction assembly includes an elastic airbag forming a suction cavity, the elastic airbag communicating with a cavity within the frame, and the compressed elastic airbag having a tendency to expand to suction gas from the carrier and the frame.

[0009] In an optional embodiment, the elastic suction assembly further includes a pressure plate that presses against the outer surface of the elastic airbag and is movable relative to the frame to compress the elastic airbag.

[0010] In an optional embodiment, the elastic suction assembly further includes a housing and a pressing part. The housing is connected to the frame, and the pressure plate and the elastic airbag are disposed inside the housing. The pressing part is disposed on the side of the pressure plate opposite to the elastic airbag. An avoidance opening is provided on the housing, and a portion of the pressing part extends out of the housing from the avoidance opening.

[0011] In an optional embodiment, at least some of the carrier members are arranged at intervals along the first direction, and the two opposite ends of the carrier device in the first direction are the top and bottom ends of the carrier device, respectively, and the orientation of the support surface is parallel to the first direction and faces the top of the carrier device.

[0012] In an optional implementation, the elastic suction assembly is located at the top of the support device.

[0013] In an optional embodiment, the frame includes a side support and a bottom support. The two side supports are spaced apart in a second direction and are both connected to the bottom support. The bottom support is located at the bottom of the bearing device. The second direction is perpendicular to the first direction. Both the side supports and the bottom support have cavities that are interconnected. Multiple bearings are provided on each of the two side supports. The bearings are located on the side of the side support facing the other side support.

[0014] In an optional embodiment, the side support is a plate with an inner side surface. The inner sides of two side supports face each other. The carrier is strip-shaped and extends on the inner side surface. Multiple suction holes are provided on the support surface and are spaced apart in the extending direction of the carrier.

[0015] In an optional implementation, an air inlet is provided on the frame, and the air inlet is equipped with a switch for selectively opening or closing the air inlet.

[0016] In an optional implementation, the switch is a one-way backstop device.

[0017] The beneficial effects of the bearing device provided in this application embodiment include:

[0018] The carrier device provided in this application includes a frame, carrier members, and an elastic suction assembly. Multiple carrier members are connected to the frame, and both the carrier members and the frame have cavities that are interconnected. Each carrier member has a support surface for supporting sheet-like materials, and suction holes are formed on the support surface, communicating with the cavities within the carrier member. The elastic suction assembly is disposed on the frame and forms a suction cavity that communicates with the cavities within the frame. The suction cavity tends to enlarge under the elastic action of the elastic suction assembly to suction gas from the carrier members and the frame. In this application embodiment, the elastic suction assembly can continuously maintain a negative pressure state in the cavities within the carrier members and the frame. The sheet-like materials on the carrier members can be adsorbed by the suction holes, thus reliably adhering to the support surface of the carrier members. They are less likely to separate from the support surface due to bumps or slide relative to the support surface, thereby improving the stability of the sheet-like materials loaded in the carrier device, reducing the risk of damage caused by the sheet-like materials shaking relative to the carrier device during transportation, and improving product yield. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a carrier device loading sheet material in one embodiment of this application;

[0021] Figure 2 This is a cross-sectional view of the support device in one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of a carrier in one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the cooperation between the positioning seat and the supporting device in one embodiment of this application.

[0024] Icons: 100-Bearing device; 110-Frame; 111-Side support; 112-Bottom support; 113-Back support; 114-Switch; 120-Bearing component; 121-Support surface; 122-Suction hole; 130-Elastic suction assembly; 131-Elastic airbag; 132-Pressure plate; 133-Housing; 134-Pressing part; 135-Air nozzle; 200-Sheet material; 300-Positioning seat; 310-Limiting part; 320-Positioning drive component. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0030] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0031] As described in the background section, in related technologies, the stability of the sheet material carried by the carrier device for containing sheet material is poor relative to the carrier device during transportation. When the carrier device shakes during transportation, the sheet material will sway relative to the carrier component, making it prone to damage due to friction and impact. In the photovoltaic field, silicon wafers or solar cells are loaded in baskets and transported along with the baskets in some processes. When the solar cells sway in the baskets, they are prone to microcracks, edge chipping, and other phenomena, leading to a decrease in product yield.

[0032] Therefore, this application provides a carrier device that adsorbs sheet material into the carrier device by vacuum adsorption, making it less likely for the sheet material to shift relative to the carrier device, thereby reducing the risk of damage to the sheet material due to friction and impact.

[0033] Figure 1 This is a schematic diagram of a carrier device 100 loaded with sheet material 200 in one embodiment of this application; Figure 2 This is a cross-sectional view of the support device 100 in one embodiment of this application; Figure 3 This is a schematic diagram of the carrier 120 in one embodiment of this application. Figures 1 to 3As shown, the carrier device 100 provided in this embodiment can be used to carry sheet material 200, which can be a silicon wafer, a battery cell, or other sheet-shaped material. The carrier device 100 includes a frame 110, carrier members 120, and an elastic suction assembly 130. Multiple carrier members 120 are connected to the frame 110. Both the carrier members 120 and the frame 110 have cavities and are interconnected. Each carrier member 120 has a support surface 121 for supporting the sheet material 200, and a suction hole 122 is formed on the support surface 121, which communicates with the cavity inside the carrier member 120. The elastic suction assembly 130 is disposed on the frame 110 and forms a suction cavity that communicates with the cavity inside the frame 110. The suction cavity tends to enlarge under the elastic action of the elastic suction assembly 130 to suction gas from the carrier members 120 and the frame 110. It is understood that the elastic suction assembly 130 in this embodiment can undergo elastic deformation, allowing the suction cavity to be compressed, and the compressed suction cavity tends to expand under elastic action. Therefore, the compressed suction cavity can, through its own expansion, draw gas from the frame 110 and the support member 120 into the suction cavity, allowing the suction holes 122 on the support member 120 to adsorb the sheet material 200 onto the support surface 121, thus improving the stability of the sheet material 200 relative to the support device 100. Figure 2 In the middle, the hollow arrow in the frame 110 indicates the direction of gas flow inside the frame 110 when the elastic suction component 130 is in the suction state.

[0034] In this embodiment, the supporting device 100 has a first direction, and the two opposite ends of the supporting device 100 in the first direction are respectively the top end and the bottom end of the supporting device 100 (corresponding to...). Figure 1 (The upper and lower ends of the structure). At least some of the support members 120 are spaced apart along a first direction, and the support surface 121 is parallel to the first direction and faces the top of the support device 100. Sheet material 200 can be accommodated between two adjacent support members in the first direction. The frame 110 includes side support members 111 and bottom support members 112. Optionally, the two side support members 111 are arranged in a second direction (corresponding to the lower and upper ends of the structure). Figure 1The side supports 111 and the bottom support 112 are spaced apart and connected to the bottom support 112, which is located at the bottom of the bearing device 100. The second direction is perpendicular to the first direction. Both the side supports 111 and the bottom support 112 have cavities that are interconnected. Multiple bearing members 120 are respectively provided on the two side supports 111, with each bearing member 120 positioned on the side of the side support 111 facing the other side support 111. In other words, the two side supports 111 have opposing inner sides, and the bearing members 120 are connected to the inner sides of the side supports 111. When the sheet material 200 is loaded into the bearing device 100, the sheet material 200 is located between the two side supports 111, and each sheet material 200 is supported by the bearing members 120 at both ends in the second direction.

[0035] Furthermore, the side support 111 is a plate with an inner surface. The inner surfaces of two side supports 111 face each other. The carrier 120 is strip-shaped and extends on the inner surface. Multiple suction holes 122 are provided on the support surface 121, and these holes are spaced apart along the extending direction of the carrier 120. By setting the carrier 120 to a strip shape, its support reliability for the edge of the sheet material 200 can be increased. Optionally, the inner surface of the side support 111 is perpendicular to the second direction and parallel to the first direction; alternatively, the extending direction of the carrier 120 is parallel to a third direction, which is perpendicular to both the first and second directions. Since the dimension of the carrier 120 in the second direction is smaller than its dimension in the third direction, the support of the carrier 120 for the sheet material 200 is limited to the area near the edge of the sheet material 200, rather than excessively contacting the center of the sheet material 200, which is beneficial for improving the surface quality of the center of the sheet material 200. In this embodiment, the bottom support 112 is plate-shaped, and the side of the bottom support 112 away from the carrier 120 is flat and perpendicular to the first direction, which facilitates the placement of the carrier device 100.

[0036] It should be understood that in other embodiments, the support surface 121 of the carrier 120 may not be completely parallel to the first direction, but may be inclined relative to the first direction. For example, the frame 110 of the carrier device 100 forms an opening for the sheet material 200 to pass through to be loaded into or removed from the frame 110. The end of the support surface 121 near the opening is higher than the end away from the opening. This arrangement makes it less likely for the sheet material 200 to fall out of the opening when the carrier device 100 is transported in an orientation where the first direction is perpendicular to the horizontal direction. Furthermore, the frame 110 with the opening also includes a back support 113, which is connected to the bottom support 112 to block the sheet material 200 and prevent the sheet material 200 from falling out of the carrier device 100 from the side opposite to the opening.

[0037] In this embodiment, the elastic suction assembly 130 includes an elastic airbag 131 forming a suction cavity. The elastic airbag 131 communicates with the cavity within the frame 110. The compressed elastic airbag 131 tends to expand to suction gas from the carrier 120 and the frame 110. Optionally, the elastic airbag 131 is made of rubber. When it is compressed and the suction cavity shrinks, the elastic airbag 131 tends to return to its uncompressed state due to its elasticity, thus the suction cavity tends to expand. This tendency provides suction force, creating negative pressure within the carrier 120 and the frame 110 to hold the sheet material 200. When the sheet material 200 blocks the suction hole 122, as the compressed elastic airbag 131 gradually expands, the pressure within the frame 110 and the carrier 120 gradually decreases until an equilibrium is reached, at which point the elastic airbag 131 stops expanding, and the sheet material 200 is reliably adsorbed onto the support surface 121. When it is necessary to remove the sheet material 200, the elastic airbag 131 can be compressed again to allow gas to enter the frame 110 and the support member 120 from the elastic airbag 131, thereby relieving the negative pressure state in the support member 120 and the frame 110, so that the suction hole 122 does not generate suction, and the sheet material 200 can be removed at this time.

[0038] Optionally, the elastic suction assembly 130 further includes a pressure plate 132, which presses against the outer surface of the elastic airbag 131. The pressure plate 132 can move relative to the frame 110 to compress the elastic airbag 131. By setting the pressure plate 132, it is possible to uniformly compress the elastic airbag 131, avoid excessive local pressure that could damage the elastic airbag 131, and the larger compression area can also improve the compression efficiency of the elastic airbag 131.

[0039] Furthermore, the elastic suction assembly 130 also includes a housing 133 and a pressing part 134. The housing 133 is connected to the frame 110. The pressure plate 132 and the elastic airbag 131 are disposed inside the housing 133. The pressing part 134 is disposed on the side of the pressure plate 132 opposite to the elastic airbag 131. A clearance opening is provided on the housing 133, and a portion of the pressing part 134 extends out of the housing 133 from the clearance opening. By providing the housing 133, the elastic airbag 131 can be effectively protected, and the expansion space of the elastic airbag 131 can be limited. By providing the pressing part 134, it is convenient for the operator (or mechanical equipment) to push the pressure plate 132 through the pressing part 134, thereby squeezing the elastic airbag 131. The insertion and engagement between the pressing part 134 and the clearance opening can also limit the position of the pressure plate 132, so that the pressure plate 132 moves in a fixed direction, such as limiting the pressure plate 132 to move only in a first direction.

[0040] It is understood that the elastic suction assembly 130 provided in the above embodiments of this application is only an optional embodiment. In other optional embodiments, the suction chamber of the elastic suction assembly 130 may not be formed by the elastic airbag 131. For example, optionally, the elastic suction assembly 130 includes a piston structure, specifically including a piston part that mates with a cylinder, the cylinder and the piston part forming a suction chamber, and the piston part being slidable relative to the cylinder to change the size of the suction chamber. The cylinder is connected to the cavity of the frame 110, and the piston part is connected to an elastic member. When the suction chamber is compressed, the elastic member can apply a force to the piston part, causing it to tend to expand the suction chamber, thereby generating a suction force, creating a negative pressure in the frame 110 and the support member 120, thereby adsorbing the sheet material 200.

[0041] exist Figures 1 to 3 In this embodiment, the elastic suction assembly 130 is located at the top of the support device 100, and the housing 133 is connected to the end of the side support 111 away from the bottom support 112. A through hole should be provided at the connection between the housing 133 and the side support 111 to allow the elastic airbag 131 to communicate with the cavity in the side support 111. For example, the elastic airbag 131 has two nozzles 135, which are inserted into the two side supports 111 through the through holes on the housing 133, thereby communicating with the side supports 111. In this configuration, the outer periphery of the nozzle 135 should be sealed to the inner edge of the through hole on the housing 133, and / or sealed to the side support 111 to prevent air leakage during suction, which would prevent sufficient negative pressure from being generated within the frame 110 and the support 120 to adsorb the sheet material 200.

[0042] Figure 4 This is a schematic diagram illustrating the cooperation between the positioning seat 300 and the supporting device 100 in one embodiment of this application. Figures 1 to 4 As shown, the frame 110 of the support device 100 in this embodiment is also provided with an air inlet, and the air inlet is provided with a switch 114, which is used to selectively open or close the air inlet. Optionally, the air inlet and the switch 114 are provided on the bottom support member 112. It can be understood that when it is necessary to remove the sheet material 200 from the support device 100, it is first necessary to release the negative pressure state in the frame 110 and the support member 120, thereby releasing the adsorption force on the sheet material 200. The release of adsorption does not rely on recompressing the suction chamber of the elastic suction component 130, but is achieved by opening the air inlet on the frame 110 to allow external air to enter the cavity of the frame 110 and the support member 120, thereby eliminating the negative pressure state.

[0043] Optionally, switch 114 is a one-way backflow preventer. The one-way backflow preventer has a first state and a second state. In the first state, the one-way backflow preventer only allows gas to exit from the inlet to the outside of frame 110, while gas outside frame 110 cannot enter frame 110 through the inlet. When the one-way backflow preventer is in the second state, gas is allowed to enter frame 110 through the inlet. It can be understood that when the one-way backflow preventer is in the second state, the negative pressure state inside frame 110 can be broken, releasing the adsorption of the sheet material 200. The switching between the first and second states of the one-way backflow preventer can be manually controlled by the operator or accomplished by equipment. For example, a positioning seat 300 is provided on the production line, with a limit part 310 and a positioning drive component 320. After the carrier device 100 reaches the positioning seat 300, the positioning drive 320 pushes the carrier device 100 until it is stopped by the limiting part 310, thus completing the positioning of the carrier device 100. Positioning the carrier device 100 is significant because it provides a clear location, facilitating accurate picking of the sheet material 200 and / or the carrier device 100 in subsequent processes. Optionally, the positioning drive 320 can be a cylinder, a hydraulic cylinder, or a linear motor. Optionally, when the positioning drive 320 pushes the carrier device 100 for positioning, it can abut and trigger a one-way check device, causing the one-way check device to switch from a first state to a second state, thereby releasing the adsorption of the sheet material 200 and facilitating the subsequent transfer of the sheet material 200 from the carrier device 100. Optionally, when the positioning drive 320 releases its contact with the frame 110 and the one-way backstop device, the one-way backstop device can automatically switch from the second state back to the first state to prevent gas from entering the frame 110 from the outside.

[0044] It should be understood that in other embodiments, switch 114 may also be a regular valve, which can be manually opened to allow gas to enter the frame 110 through the air inlet when it is necessary to break the negative pressure.

[0045] The carrier device 100 provided in this application embodiment can be used in the following manner:

[0046] Before loading the sheet material 200, the elastic airbag 131 can be compressed by manually or by machine by squeezing the pressing part 134 to expel as much gas as possible. During this process, the air inlet switch 114 can be opened. When the switch 114 is a one-way check device, it can remain in the first state, allowing gas to be discharged from the frame 110 through the air inlet, but not to enter the frame 110 through the air inlet. After that, the sheet material 200 is placed on the support surface 121 of the carrier 120, completely covering each suction hole 122. After releasing the pressing part 134, the elastic airbag 131 expands and sucks away some of the gas in the frame 110 and the carrier 120, thereby creating a negative pressure in the cavity of the frame 110 and the carrier 120. The suction holes 122 adsorb the sheet material 200 onto the support surface 121. After the carrier device 100 and the sheet material 200 are transported together to the next process, they can be placed on the positioning seat 300. The positioning drive 320 is used to position the carrier device 100. At the same time, the positioning drive 320 triggers the switch 114 to open the air inlet. Gas enters the frame 110 through the air inlet, breaking the negative pressure in the frame 110 and the carrier device 120 and eliminating the adsorption force on the sheet material 200. After that, the sheet material 200 can be removed from the carrier device 100.

[0047] In summary, this application provides a supporting device 100 for supporting sheet material 200. The supporting device 100 includes a frame 110, supporting members 120, and an elastic suction assembly 130. Multiple supporting members 120 are connected to the frame 110. Both the supporting members 120 and the frame 110 have cavities that communicate with each other. Each supporting member 120 has a supporting surface 121 for supporting the sheet material 200, and a suction hole 122 is formed on the supporting surface 121, communicating with the cavity inside the supporting member 120. The elastic suction assembly 130 is disposed on the frame 110 and forms a suction cavity that communicates with the cavity inside the frame 110. The suction cavity tends to enlarge under the elastic action of the elastic suction assembly 130 to suction gas from the supporting members 120 and the frame 110. In this embodiment, the elastic suction component 130 can maintain a continuous negative pressure state in the cavity of the carrier 120 and the frame 110. The sheet material 200 on the carrier 120 can be attracted by the suction hole 122, so it can be reliably attached to the support surface 121 of the carrier 120. It is not easy to separate from the support surface 121 due to bumps, nor is it easy to slide relative to the support surface 121. Therefore, the stability of the sheet material 200 when loaded in the carrier device 100 is improved, the risk of damage caused by the sheet material 200 shaking relative to the carrier device 100 during the conveying process is reduced, and the product yield is improved.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A supporting device for supporting sheet-like materials, characterized in that, The device includes a frame, a support member, and an elastic suction assembly. Multiple support members are connected to the frame. Both the support member and the frame have cavities and are interconnected. Each support member has a support surface for supporting the sheet material. Suction holes are formed on the support surface and are connected to cavities within the support member. The elastic suction assembly is disposed on the frame and forms a compressible suction cavity. The suction cavity is connected to the cavity inside the frame. The suction cavity in the compressed state tends to increase in size under the elastic action of the elastic suction assembly, so as to suction the gas inside the support and the frame.

2. The bearing device according to claim 1, characterized in that, The elastic suction assembly includes an elastic airbag forming the suction chamber, the elastic airbag communicating with a cavity within the frame, and the compressed elastic airbag having a tendency to expand to suction gas from the carrier and the frame.

3. The bearing device according to claim 2, characterized in that, The elastic suction assembly also includes a pressure plate that presses against the outer surface of the elastic airbag and is movable relative to the frame to compress the elastic airbag.

4. The bearing device according to claim 3, characterized in that, The elastic suction assembly further includes a housing and a pressing part. The housing is connected to the frame. The pressure plate and the elastic airbag are disposed inside the housing. The pressing part is disposed on the side of the pressure plate opposite to the elastic airbag. An opening is provided on the housing, and a portion of the pressing part extends out of the housing from the opening.

5. The bearing device according to claim 1, characterized in that, At least some of the carrier members are arranged at intervals along a first direction, and the two opposite ends of the carrier device in the first direction are the top and bottom ends of the carrier device, respectively. The orientation of the support surface is parallel to the first direction and faces the top of the carrier device.

6. The bearing device according to claim 5, characterized in that, The elastic suction assembly is located at the top of the support device.

7. The bearing device according to claim 5, characterized in that, The frame includes side supports and bottom supports. Two side supports are spaced apart in a second direction and are both connected to the bottom support. The bottom support is located at the bottom of the bearing device. The second direction is perpendicular to the first direction. Both the side supports and the bottom support have cavities that are interconnected. Multiple bearings are respectively provided on the two side supports. The bearings are located on the side of the side support facing the other side support.

8. The bearing device according to claim 7, characterized in that, The side support is a plate with an inner side. The inner sides of two side supports are opposite each other. The bearing is strip-shaped and extends on the inner side. Multiple suction holes are provided on the support surface and are spaced apart in the extending direction of the bearing.

9. The bearing device according to claim 1, characterized in that, An air inlet is provided on the frame, and a switch is provided on the air inlet for selectively opening or closing the air inlet.

10. The bearing device according to claim 9, characterized in that, The switch is a one-way non-reverse device.

Images