Sheet body transfer mechanism and sheet body feeding device

Abstract

The utility model relates to a sheet body transfer mechanism and a sheet body feeding device. The sheet body transfer mechanism comprises a first transfer assembly and a second transfer assembly; the first transfer assembly comprises two first conveying belts arranged in parallel and a first adsorption unit. The second transfer assembly comprises two second conveying belts arranged in parallel and a second adsorption unit. The two second conveying belts are arranged between the two first conveying belts in parallel and partially overlapped to form an overlapped area, and a rotating station is arranged below the overlapped area. The first transfer assembly picks up the sheet bodies on the first conveying mechanism and releases the sheet bodies to the rotating station; the second transferring assembly picks up the sheet bodies on the rotating station and conveys the sheet bodies to the second conveying mechanism. The first transferring assembly and the second transferring assembly are matched with each other, transferring of the sheet body between the two conveying mechanisms can be rapidly completed, and the working rhythm of the sheet body transferring mechanism is improved.

Description

Technical Field

[0001] The present application relates to the field of solar photovoltaic production, and specifically to a sheet transfer mechanism and a sheet loading device. Background Art

[0002] In the scenario of sheet conveying, it is sometimes necessary to transfer the sheet from one conveyor line to another conveyor line set up in parallel with it. The current mainstream solution is to set a conveying mechanism with adsorption and conveying functions across the two conveyor lines, and use a hanging conveying method to transfer the sheet from one conveyor line to another.

[0003] When silicon ingots are cut into sheets, they leave linear marks on the cut surface. In some inspections, these marks must be aligned perpendicular to the conveying direction to avoid interference. Existing overhead conveyors, when transporting rotating sheets, require the previous sheet to be fully released from one conveyor line before the next sheet can be transferred to another, in order to control the loading cycle. This results in low efficiency. Utility Model Content

[0004] In order to solve the problem of low efficiency of existing sheet loading, the present application provides a sheet transfer mechanism and a sheet loading device with high loading efficiency.

[0005] The technical solution of this application is as follows:

[0006] In a first aspect, the present application provides a sheet transfer mechanism for transferring sheets between a first conveying mechanism and a second conveying mechanism arranged in parallel and extending along a first direction. The sheet transfer mechanism includes a first transfer assembly and a second transfer assembly arranged to partially overlap along a second direction, the second direction being perpendicular to the first direction.

[0007] The first transfer assembly includes two first conveyor belts arranged in parallel along the second direction and a first adsorption unit;

[0008] The second transfer assembly includes two second conveyor belts arranged in parallel along a second direction and a second adsorption unit;

[0009] The two second conveyor belts are arranged in parallel between the two first conveyor belts, and the two second conveyor belts and the two first conveyor belts partially overlap along the second direction to form an overlapping area, and a rotating station is located below the overlapping area;

[0010] The first transfer assembly is configured to pick up the sheet from the first conveying mechanism, convey the sheet to the overlapping area, and then release it to the rotating station;

[0011] The second transfer assembly is configured to pick up the sheet after being turned on the rotating station, and to transport the sheet to the top of the second conveying mechanism and then release it.

[0012] The present application first uses the first transfer component to suck up the sheet on the first conveying mechanism and releases the sheet to the rotating station after conveying it to the overlapping area, and then uses the second transfer component to suck up the sheet after turning on the rotating station and convey it to the top of the second conveying mechanism and release the sheet to the second conveying mechanism. The two transfer components work independently and do not interfere with each other. It is only necessary to ensure that the first transfer component does not convey the next sheet to the overlapping area before the second transfer component sucks up the sheet after rotation on the rotating station (that is, before the second transfer component sucks up the sheet on the rotating station, the first transfer component can pick up the next sheet on the first conveying mechanism in advance), so that the sheet can be quickly transferred from the first conveying mechanism to the second conveying mechanism, thereby improving the working rhythm of the sheet transfer mechanism.

[0013] Optionally, the conveying surface of the first conveyor belt is lower than the conveying surface of the second conveyor belt.

[0014] By setting the conveying surface of the first conveyor belt to be lower than the conveying surface of the second conveyor belt, after the second conveyor belt picks up the sheet that has been turned on the rotating station, the bottom surface of the turned sheet can be higher than the conveying surface of the first conveyor belt, thereby not affecting the sheet transported to the overlapping area on the first conveyor belt, and further improving the working rhythm of the sheet transfer mechanism.

[0015] Optionally, the height difference between the conveying surface of the first conveyor belt and the conveying surface of the second conveyor belt is greater than or equal to the thickness of a sheet.

[0016] Setting the height difference between the conveying surface of the first conveyor belt and the conveying surface of the second conveyor belt to be greater than or equal to the thickness of a sheet can effectively ensure that there is no interference between the sheets conveyed by the first conveyor belt and the second conveyor belt in the overlapping area.

[0017] Optionally, the distance between the conveying surface of the second conveyor belt and the supporting surface of the rotating station is 0.2 mm-30 mm.

[0018] The distance between the conveying surface of the second conveyor belt and the supporting surface of the rotary station should not be too large or too small. If it is too large, the sheet of the rotary station may not be adsorbed, and if it is too small, interference may occur.

[0019] Optionally, the distance between the conveying surface of the second conveyor belt and the supporting surface of the rotating station is 2 mm-5 mm.

[0020] Limiting the distance between the conveying surface of the second conveyor belt and the supporting surface of the rotary station to 2mm-5mm is a more appropriate value. It can quickly absorb the sheets of the rotary station without causing interference, and also takes into account work efficiency.

[0021] Optionally, the first adsorption unit and the second adsorption unit adopt any one of a circular suction cup, an air suction adsorption structure or an air blowing adsorption structure.

[0022] The specific structures of the first adsorption unit and the second adsorption unit can be flexibly selected according to the actual situation on site.

[0023] Optionally, there are two first adsorption units, one of which is configured to pick up the sheet on the first conveying mechanism, and the other is configured to release the sheet conveyed above the rotating station to the rotating station; and / or,

[0024] There are two second adsorption units, one of which is configured to pick up the sheet on the rotating station, and the other is configured to release the sheet conveyed to the second conveying mechanism.

[0025] By providing two first suction units, the rhythm of the first conveyor belt picking up and releasing sheets can be more independently controlled. This allows for simultaneous sheet pickup and release, further improving the transfer efficiency of the first transfer assembly. Similarly, providing two second suction units can also improve the transfer efficiency of the second transfer assembly. When both the first and second suction units are provided, the transfer efficiency of the sheet transfer mechanism can be further improved.

[0026] Optionally, there are two first transfer components, and the two first transfer components are arranged on both sides of the second transfer component in a partially overlapping manner along the second direction.

[0027] The two first transfer assemblies can be used corresponding to the two first conveying mechanisms, and can respectively transfer the sheets on the two first conveying mechanisms to the second conveying mechanism in the middle, thereby improving the transfer efficiency.

[0028] Optionally, the sheet transfer mechanism further includes an air blowing assembly for blowing away debris at the rotating station.

[0029] By configuring the blowing component, the debris at the rotating station can be blown away to prevent the debris from entering the subsequent stations and affecting product quality.

[0030] Optionally, the sheet transfer mechanism further includes a detection component, which is installed at the input end of the first transfer component and is used to detect whether the sheet picked up by the first transfer component is tilted.

[0031] By configuring a detection component at the input end of the first transfer component, it is possible to detect whether the sheet is tilted before the first transfer component picks it up, thereby preventing the tilted sheet from interfering with the normal operation of the sheet transfer mechanism.

[0032] Optionally, the detection component includes one photoelectric sensor, two photoelectric sensors, or four photoelectric sensors;

[0033] When the detection component adopts a photoelectric sensor, the photoelectric sensor is located on either side of the first transfer component;

[0034] When the detection component uses two photoelectric sensors, the two photoelectric sensors are respectively located on the same side of the first transfer component, or are arranged diagonally on both sides of the first transfer component;

[0035] When the detection component adopts four photoelectric sensors, the four photoelectric sensors are arranged in groups of two on both sides of the first transfer component.

[0036] The configuration of the detection components can be selected according to the actual situation on site, which increases the flexibility of selection.

[0037] Optionally, the sheet transfer mechanism further includes an in-place sensor, which is arranged at the input end of the second transfer component and / or the sheet unloading end of the second transfer component.

[0038] By configuring a position sensor on the second transfer component, the position of the sheet can be detected so that the sheet can accurately fall onto the rotating station or the second conveying mechanism.

[0039] Optionally, the sheet transport mechanism further includes a steering sensor, which is disposed below the overlapping area and configured to detect whether the sheet, after being turned on the rotating station, has been turned to a predetermined angle.

[0040] By setting a steering sensor under the overlapping area, it is possible to timely check whether the sheet is turned to the predetermined angle, thereby preventing the second transfer component from being unable to normally pick up the turned sheet on the rotating station due to the sheet not being turned to the predetermined angle, thereby affecting the transfer efficiency.

[0041] In a second aspect, the present application provides a sheet loading device, comprising a first conveying mechanism and a second conveying mechanism arranged in parallel, and a sheet transfer mechanism and a rotating mechanism as described in any one of the first aspects; wherein:

[0042] The first conveying mechanism is located on a first side of the second conveying mechanism, and the first conveying mechanism and the second conveying mechanism are respectively configured to convey the sheet along a first direction;

[0043] The sheet transfer mechanism spans above the first conveying mechanism and the second conveying mechanism, and the rotating mechanism is located below the overlapping area;

[0044] The sheet transport mechanism is configured to pick up the sheet from the first conveying mechanism, transport the sheet to the overlapping area, and then release it onto the rotating mechanism; the rotating mechanism is configured to rotate the sheet by a predetermined angle in a horizontal plane; the sheet transport mechanism is further configured to transport the sheet rotated by the predetermined angle on the rotating mechanism to the top of the second conveying mechanism and then release it;

[0045] The second conveying mechanism is further configured to convey the sheet to a subsequent workstation.

[0046] The sheet before turning is transported by the first conveying mechanism, the sheet before turning is transported to the rotating mechanism by the sheet transfer mechanism and then turned, and the turned sheet is transported from the rotating mechanism to the second conveying mechanism, and the turned sheet is transported by the second conveying mechanism, thereby realizing the turning and loading of the sheet; the sheet transfer mechanism only completes the transporting function, and the rotating mechanism only completes the steering function. When the rotating mechanism is steering, the sheet transfer mechanism can transport, and when the sheet transfer mechanism is transporting, the rotating mechanism can turn. The sheet transfer mechanism and the rotating mechanism work independently and do not interfere with each other, which can fully save the waiting time for transportation and rotation, improve the work rhythm, and improve the loading efficiency of the sheet loading device.

[0047] Optionally, there are two sheet transport mechanisms and two rotation mechanisms;

[0048] The two sheet transport mechanisms are arranged above the first conveying mechanism and the second conveying mechanism at intervals along the first direction, and a rotating mechanism is arranged below the overlapping area of ​​each sheet transport mechanism.

[0049] By configuring the first conveying mechanism with two sheet transfer mechanisms, the sheet loading efficiency can be further increased and the production capacity can be improved. In addition, by controlling the action time, speed and other parameters of the first conveying mechanism and the sheet transfer mechanism, the two sheet transfer mechanisms can synchronously release the sheets they transfer to the second conveying mechanism, so that the sheets on the second conveying mechanism can maintain a relatively consistent sheet spacing.

[0050] Optionally, there are two first conveying mechanisms; the other first conveying mechanism is located on a second side of the second conveying mechanism opposite to the first side.

[0051] The two first conveying mechanisms are used in conjunction with one second conveying mechanism to further improve the loading efficiency of the sheet loading device. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the three-dimensional structure of an optional embodiment of the sheet loading device in the present application;

[0053] Figure 2 for Figure 1 A top view of

[0054] Figure 3 This is a schematic diagram of the three-dimensional structure of an optional embodiment of the sheet transport mechanism in the present application;

[0055] Figure 4 for Figure 3 main view.

[0056] Figures 1 to 4 Including:

[0057] Sheet loading device 10;

[0058] A first conveying mechanism 11;

[0059] A second conveying mechanism 12;

[0060] Sheet transfer mechanism 13, first transfer assembly 131, first conveyor belt 311, first suction unit 312, second transfer assembly 132, second conveyor belt 321, second suction unit 322, overlapping area 331, blowing assembly 133, detection assembly 134, photoelectric sensor 341, in-position sensor 135, transfer bracket 136;

[0061] Rotating mechanism 14;

[0062] Material receiving box 18;

[0063] Sheet 100 , first direction 101 , second direction 102 . DETAILED DESCRIPTION

[0064] 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.

[0065] When silicon ingots are cut into wafers, they leave line marks on the cut surface. Before being manufactured into solar cells, the wafers undergo various tests. For some of these tests, the line marks on the wafers must be perpendicular to the conveying direction to avoid interference. If the line marks on the wafers are not perpendicular to the conveying direction, the wafers must be rotated to align them.

[0066] As photovoltaic panels face increasing demands for cell luminous efficiency, more and more processes are opting to string together half-cells (i.e., half of a full cell) to create photovoltaic panels. These half-cells can be cut into half-cells, or they can be directly obtained from the silicon wafer during slicing, and then processed to create half-cells.

[0067] For half-wafers, there are two types: one in which the line mark direction is parallel to the long side of the half wafer, and another in which the line mark direction is parallel to the short side of the half wafer. Figure 1 、 Figure 2 The figure shows a sheet loading device 10 , which includes a first conveying mechanism 11 and a second conveying mechanism 12 arranged in parallel, a sheet transfer mechanism 13 and a rotating mechanism 14 .

[0068] There is at least one first conveying mechanism 11 located on a first side of the second conveying mechanism 12 . The first conveying mechanism 11 and the second conveying mechanism 12 are respectively configured to convey the sheet 100 along a first direction 101 .

[0069] There is at least one sheet transport mechanism 13 that spans over the first conveying mechanism 11 and the second conveying mechanism 12 . The rotating mechanism 14 is located below the sheet transport mechanism 13 , specifically below the overlapping area 331 described below.

[0070] The sheet transport mechanism 13 is configured to pick up the sheet 100 from the first conveying mechanism 11, transport the sheet 100 to the overlapping area 331, and then release it onto the rotating mechanism 14. The rotating mechanism 14 is configured to rotate the sheet 100 by a predetermined angle (usually 90°, but not limited to this angle) in a horizontal plane. The sheet transport mechanism 13 is further configured to transport the sheet 100 rotated by the predetermined angle on the rotating mechanism 14 to the top of the second conveying mechanism 12 and then release it.

[0071] The second conveying mechanism 12 is further configured to convey the sheet 100 to a subsequent workstation, such as an inspection workstation.

[0072] The first conveying mechanism 11, the second conveying mechanism 12, and the rotating mechanism 14 of the sheet loading device 10 can all employ any conventional structure. For example, the first conveying mechanism 11 and the second conveying mechanism 12 can each employ a conveyor belt, while the rotating mechanism 14 can employ a suction platform and a rotating assembly. The suction platform is mounted at the drive end of the rotating assembly and is used to absorb the sheet, while the rotating assembly drives the suction platform to rotate.

[0073] This application mainly improves the sheet transfer mechanism 13 in the sheet loading device 10. The sheet transfer mechanism 13 is described in detail below. The sheet transfer mechanism 13 proposed in this application is not only suitable for transferring ordinary whole silicon wafers, but is also particularly suitable for transferring half silicon wafers. As an optional embodiment, Figure 3 、 Figure 4 As shown, a sheet transfer mechanism 13 is used to transfer sheets 100 between a first conveying mechanism 11 and a second conveying mechanism 12 that are arranged in parallel and extend along a first direction 101. The sheet transfer mechanism 13 includes a first transfer assembly 131 and a second transfer assembly 132 that are partially overlapped along a second direction 102. The second direction 102 is perpendicular to the first direction 101. The first transfer assembly 131 and the second transfer assembly 132 are both mounted below a transfer bracket 136.

[0074] The first transfer assembly 131 includes two first conveyor belts 311 and a first adsorption unit 312 arranged in parallel along the second direction 102;

[0075] The second transfer assembly 132 includes two second conveyor belts 321 and a second adsorption unit 322 arranged in parallel along the second direction 102;

[0076] The two second conveyor belts 321 are arranged in parallel between the two first conveyor belts 311, and the two second conveyor belts 321 and the two first conveyor belts 311 partially overlap along the second direction 102 to form an overlapping area 331. Below the overlapping area 331 is a rotation station; the rotation station is equipped with a rotation mechanism 14;

[0077] The first transfer assembly 131 is configured to pick up the sheet 100 on the first conveying mechanism 11 and convey the sheet 100 to the overlapping area 331 and then release it to the rotation station;

[0078] The second transfer assembly 132 is configured to pick up the sheet 100 that has been rotated on the rotating station (generally rotated 90 degrees to consider the influence of the line mark), and transport the sheet 100 to the top of the second conveying mechanism 12 and then release it.

[0079] When the line marks on a half-wafer are parallel to its long side and parallel to its conveying direction (i.e., the first direction 101), the short side of the half-wafer after being turned on the rotating station is parallel to the first direction 101, and the long side is parallel to the second direction 102. The spacing between the two second conveyor belts 321 of the wafer transfer mechanism 13 of the present application is sufficient to meet the requirements of adsorption and conveying of the short side parallel to the first direction 101, and adsorption and conveying will not be impossible due to the problem of the long and short sides after the half-wafer is rotated. Of course, for the half-wafer in the special case mentioned above, for the half-wafer with the line marks parallel to its short side or for the whole wafer, the wafer transfer mechanism 13 of the present application is still applicable.

[0080] The present application first uses the first transfer component 131 to suck up the sheet 100 on the first conveying mechanism 11 and release the sheet 100 to the rotating station after conveying it to the overlapping area 331, and then uses the second transfer component 132 to suck up the sheet 100 after it is turned on the rotating station and convey it to the top of the second conveying mechanism 12 and release the sheet 100 to the second conveying mechanism 12. The two transfer components work independently and do not interfere with each other. It is only necessary to use the second transfer component 132 to suck up the sheet 100 after it is rotated on the rotating station. Before sucking up, it is sufficient to ensure that the first transfer component 1131 does not transport the next sheet 100 to the overlapping area 331 (that is, before the second transfer component 132 sucks up the sheet 100 on the rotating station, the first transfer component 131 can pick up the next sheet 100 on the first conveying mechanism 11 in advance), so that the sheet 100 can be quickly transferred from the first conveying mechanism 11 to the second conveying mechanism 12, thereby improving the working rhythm of the sheet transfer mechanism 13 and thereby improving the loading efficiency of the sheet loading device 10.

[0081] In one embodiment, optionally, the conveying surface of the first conveyor belt 311 is lower than the conveying surface of the second conveyor belt 321 .

[0082] By setting the conveying surface of the first conveyor belt 311 to be lower than the conveying surface of the second conveyor belt 321, after the second conveyor belt 321 picks up the sheet 100 that has been turned on the rotating station, the bottom surface of the turned sheet 100 can be higher than the conveying surface of the first conveyor belt 311, thereby not affecting the sheet 100 transported to the overlapping area on the first conveyor belt 311, and further improving the working rhythm of the sheet transfer mechanism 13.

[0083] In one embodiment, optionally, the height difference between the conveying surface of the first conveyor belt 311 and the conveying surface of the second conveyor belt 321 is greater than or equal to the thickness of a sheet 100 .

[0084] To prevent the overlapping portions of the first conveyor belt 311 and the second conveyor belt 321 from interfering with each other when conveying sheets, the height difference between the conveying surfaces of the first conveyor belt 311 and the second conveyor belt 321 is set to be greater than or equal to the thickness of a sheet 100.

[0085] In one embodiment, optionally, the distance between the conveying surface of the second conveyor belt 321 and the supporting surface of the rotating station is 0.2 mm-30 mm.

[0086] The distance between the conveying surface of the second conveyor belt 321 and the supporting surface of the rotating station should be neither too large nor too small. If it is too large, the sheet 100 of the rotating station may not be adsorbed, while if it is too small, interference may occur.

[0087] In one embodiment, optionally, the distance between the conveying surface of the second conveyor belt 321 and the supporting surface of the rotating station is 2 mm-5 mm.

[0088] The distance between the conveying surface of the second conveyor belt 321 and the supporting surface of the rotary station is limited to 2mm-5mm, which is a more appropriate value. It can quickly absorb the sheet 100 of the rotary station without causing interference and also takes into account work efficiency.

[0089] Optionally, the first adsorption unit 312 and the second adsorption unit 322 adopt any one of a circular suction cup, an air suction adsorption structure or an air blowing adsorption structure.

[0090] The specific structures of the first adsorption unit 312 and the second adsorption unit 322 can be flexibly selected according to the actual situation on site.

[0091] When the first adsorption unit 312 and the second adsorption unit 322 use circular suction cups, the circular suction cups are respectively disposed in the middle of the two first conveyor belts 311 and the two second conveyor belts 321 .

[0092] When the first adsorption unit 312 and the second adsorption unit 322 adopt an air suction adsorption structure, the air suction adsorption structure includes a rectangular adsorption block, which is installed in the middle of the two first conveyor belts 311 and the two second conveyor belts 321, and the adsorption block is arranged parallel to the conveyor belt. The lower surface of the adsorption block is higher than the conveying surface of the conveyor belt. A cavity is provided inside the adsorption block, and an adsorption groove is provided on the lower surface of the adsorption block, and the adsorption groove is arranged along the length direction of the adsorption block. A negative pressure hole is provided on the side of the adsorption block, and the adsorption groove and the negative pressure hole are both connected to the cavity. The negative pressure hole is connected to the negative pressure generator through a joint, thereby forming a negative pressure at the adsorption groove to achieve adsorption of the sheet 100.

[0093] When the first adsorption unit 312 and the second adsorption unit 322 adopt an air-blowing adsorption structure, the air-blowing adsorption structure can be designed as a strip structure slightly relative to the conveyor belt. The strip-shaped air-blowing adsorption structure is arranged in a one-to-one correspondence with the conveyor belt and extends along the conveying direction of the conveyor belt. The air-blowing adsorption structure includes a base and a flow guide. The base is installed close to the corresponding conveyor belt and is at least used to support the conveying surface of the conveyor belt; the flow guide is installed on the base, an air cavity is formed between the flow guide and the base, and an air flow guide part connected to the air cavity is formed between the flow guide and the base. The flow guide is provided with an air supply port, and compressed gas enters the air cavity through the air supply port and then flows out of the air flow guide part through the air cavity to maintain the sheet on the conveying surface of the conveyor belt in a non-contact manner based on the negative pressure generated by the Bernoulli effect. Of course, the two strip-shaped adsorption structures corresponding to the conveyor belts can also be replaced with a plate-shaped air-blowing adsorption structure.

[0094] As an optional embodiment, there are two first adsorption units, one of which is configured to pick up the sheet on the first conveying mechanism, and the other is configured to release the sheet conveyed above the rotating station to the rotating station; and / or,

[0095] There are two second adsorption units, one of which is configured to pick up the sheet on the rotating station, and the other is configured to release the sheet conveyed to the second conveying mechanism.

[0096] By setting two first adsorption units, the rhythm of the first conveyor belt picking up and releasing the sheet can be controlled more independently. While releasing the sheet, the sheet can also be picked up, which can further improve the transfer efficiency of the first transfer component. Similarly, setting two second adsorption units can also improve the transfer efficiency of the second transfer component. When two first adsorption units and two second adsorption units are set, the transfer efficiency of the sheet transfer mechanism can be further improved. As an optional embodiment, if Figure 3 As shown, the first transfer component 131 can be configured as two, and the two first transfer components 131 are arranged on both sides of the second transfer component 132 along the second direction 102 and partially overlap.

[0097] It should be noted that when there are two first transfer assemblies 131, during the transfer work, since both need to transfer the sheet 100 to the middle second transfer assembly 132, the conveying directions of the two first transfer assemblies 131 are opposite. Figure 3 As an example of the perspective shown in FIG, the conveying direction of the first transfer component 131 located in the lower left corner is Figure 3 The conveying direction of the first transfer component 131 located in the upper right corner is opposite to the direction of the arrow.

[0098] The two first transfer assemblies 131 can be used corresponding to the two first conveying mechanisms 11 , and can respectively transfer the sheets 100 on the two first conveying mechanisms 11 to the middle second conveying mechanism 12 , thereby improving transfer efficiency.

[0099] Optionally, the sheet transport mechanism 13 further includes a blowing assembly 133 for blowing away debris at the rotation station. The blowing assembly 133 can be installed on the first transport assembly 131 or on the transport bracket 136 of the sheet transport mechanism 13.

[0100] By configuring the blowing assembly 133, the debris at the rotating station can be blown away to prevent the debris from entering the subsequent stations and affecting product quality.

[0101] In one embodiment, optionally, the sheet transport mechanism 13 further includes a detection component 134 , which is installed at the input end of the first transport component 131 and is used to detect whether the sheet 100 picked up by the first transport component 131 is tilted.

[0102] By configuring a detection component 134 at the input end of the first transfer component 131, it is possible to detect whether the sheet 100 is tilted before the first transfer component 131 picks it up, thereby preventing the tilted sheet 100 from interfering with the normal operation of the sheet transfer mechanism 13 and thereby affecting the loading efficiency of the sheet loading device.

[0103] Optionally, the detection component 134 includes one photoelectric sensor 341 or two photoelectric sensors 341 or four photoelectric sensors 341;

[0104] When the detection component 134 uses a photoelectric sensor 341 , the photoelectric sensor 341 is located on either side of the first transfer component 131 ;

[0105] When the detection component 134 uses two photoelectric sensors 341, the two photoelectric sensors 341 are respectively located on the same side of the first transfer component 131, or are arranged diagonally on both sides of the first transfer component 131;

[0106] When the detection component 134 uses four photoelectric sensors 341, as shown in FIG. Figure 3As shown, four photoelectric sensors 341 are arranged in groups of two on both sides of the first transfer component 131.

[0107] The configuration of the detection component 134 can be selected according to the actual situation on site, which increases the flexibility of selection.

[0108] Optionally, the sheet transfer mechanism 13 further includes an in-position sensor 135 , which is disposed at an input end of the second transfer component 132 and / or a sheet unloading end of the second transfer component 132 .

[0109] When the sheet 100 passes through the in-place sensor 135 at the input end of the second transfer component 132, the in-place sensor 135 will send an electrical signal to the control system, and the control system will control the first adsorption unit 312 of the first transfer component 131 to release the adsorption of the sheet 100, so that the sheet 100 will land on the rotating station; when the sheet 100 passes through the in-place sensor 135 at the unloading end of the second transfer component 132, the in-place sensor 135 will send an electrical signal to the control system, and the control system will control the second adsorption unit 322 of the second transfer component 132 to release the adsorption of the sheet, so that the sheet 100 will land on the second conveying mechanism 12.

[0110] By configuring a position sensor 135 on the second transfer assembly 132 , the position of the sheet 100 can be detected, so that the sheet 100 can be accurately placed on the rotating station or the second conveying mechanism 12 .

[0111] Optionally, the sheet transport mechanism 13 further includes a steering sensor, which is disposed below the overlapping area 331 and configured to detect whether the sheet 100 , after being turned on the rotating station, has turned to a predetermined angle.

[0112] By setting a steering sensor under the overlapping area 331, it is possible to timely check whether the sheet 100 has been turned to the predetermined angle, thereby preventing the second transfer component 132 from being unable to normally pick up the turned sheet 100 on the rotating station due to the sheet 100 not being turned to the predetermined angle (generally 90 degrees), thereby affecting the transfer efficiency.

[0113] After the sheet loading device 10 of the present application adopts the above-mentioned sheet transfer mechanism 13, the sheet 100 before turning is transported by the first conveying mechanism 11, the sheet 100 before turning is transported to the rotating mechanism 14 by the sheet transfer mechanism 13 and then turned, and the turned sheet 100 is transported from the rotating mechanism 14 to the second conveying mechanism 12, and the turned sheet 100 is transported by the second conveying mechanism 12, thereby realizing the turning and loading of the sheet 100; the sheet transfer mechanism 13 only completes the transporting function, and the rotating mechanism 14 only completes the steering function. When the rotating mechanism 14 turns, the sheet transfer mechanism 13 can transport, and when the sheet transfer mechanism 13 transports, the rotating mechanism 14 can turn. The sheet transfer mechanism 13 and the rotating mechanism 14 work independently and do not interfere with each other, which can fully save the waiting time for transportation and rotation, improve the working rhythm, and improve the loading efficiency of the sheet loading device 10.

[0114] See also Figure 1 、 Figure 2 Optionally, there are two sheet transfer mechanisms 13 and two rotating mechanisms 14; the two sheet transfer mechanisms 13 are arranged above the first conveying mechanism 11 and the second conveying mechanism 12 at intervals along the first direction 101, and a rotating mechanism 14 is arranged below the overlapping area 331 of each sheet transfer mechanism 13.

[0115] By configuring the first conveying mechanism 11 with two sheet transfer mechanisms 13, the efficiency of loading sheets can be further increased and the production capacity can be improved. In addition, by controlling the action time, speed and other parameters of the first conveying mechanism 11 and the sheet transfer mechanism 13, the two sheet transfer mechanisms 13 can synchronously release the sheets 100 they transfer to the second conveying mechanism 12, so that the sheets 100 on the second conveying mechanism 12 can maintain a relatively consistent sheet spacing.

[0116] In one embodiment, optionally, there are two first conveying mechanisms 11 ; the other first conveying mechanism 11 is located on a second side of the second conveying mechanism 12 opposite to the first side.

[0117] The two first conveying mechanisms 11 and the one second conveying mechanism 12 are used in conjunction with each other to further improve the loading efficiency of the sheet loading device 10 .

[0118] Optionally, the sheet loading device 10 further includes a receiving box 18 , which is installed at the discharge end of the first conveying mechanism 11 and is used to collect unqualified sheets after inspection or sheets that the sheet transfer mechanism 13 has not had time to transfer.

[0119] The receiving box 18 is configured to collect unqualified sheets or sheets that cannot be transferred in time, so as to facilitate subsequent centralized processing.

[0120] It should be noted that the sheet loading device 10 disclosed in the present application is not limited to any one of the above optional embodiments, but can also be a combination of any one or more of the above optional embodiments, or a simple variation of any one of the above optional embodiments or the combined embodiments.

[0121] The present application has been described above in sufficient detail with certain specificity. Those skilled in the art will understand that the descriptions in the examples are merely illustrative, and that all modifications made without departing from the true spirit and scope of the present application are intended to be 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 description in the examples.

Claims

1. A sheet transport mechanism, characterized in that: The sheet transfer mechanism is used to transfer sheets between a first conveying mechanism and a second conveying mechanism arranged in parallel and extending along a first direction. The sheet transfer mechanism includes a first transfer component and a second transfer component arranged to partially overlap along a second direction, and the second direction is perpendicular to the first direction; wherein: The first transfer assembly includes two first conveyor belts arranged in parallel along the second direction and a first adsorption unit; The second transfer assembly includes two second conveyor belts arranged in parallel along the second direction and a second adsorption unit; The two second conveyor belts are arranged in parallel between the two first conveyor belts, and the two second conveyor belts and the two first conveyor belts partially overlap along the second direction to form an overlapping area, and a rotating station is located below the overlapping area; The first transfer assembly is configured to pick up the sheet on the first conveying mechanism, convey the sheet to the overlapping area, and then release it to the rotating station; The second transfer component is configured to pick up the sheet after being turned on the rotating station, and transport the sheet to the top of the second conveying mechanism and then release it.

2. The sheet transport mechanism according to claim 1, characterized in that: The conveying surface of the first conveyor belt is lower than the conveying surface of the second conveyor belt.

3. The sheet transport mechanism according to claim 2, characterized in that: A height difference between the conveying surface of the first conveyor belt and the conveying surface of the second conveyor belt is greater than or equal to the thickness of one sheet.

4. The sheet transport mechanism according to claim 2, characterized in that: The distance between the conveying surface of the second conveyor belt and the supporting surface of the rotating station is 0.2mm-30mm.

5. The sheet transport mechanism according to claim 4, characterized in that: The distance between the conveying surface of the second conveyor belt and the supporting surface of the rotating station is 2mm-5mm.

6. The sheet transport mechanism according to claim 1, characterized in that: The first adsorption unit and the second adsorption unit adopt any one of a circular suction cup, an air suction adsorption structure or an air blowing adsorption structure.

7. The sheet transport mechanism according to claim 1, characterized in that: There are two first adsorption units, one of which is configured to pick up the sheet on the first conveying mechanism, and the other is configured to release the sheet conveyed above the rotating station to the rotating station; and / or, There are two second adsorption units, one of which is configured to pick up the sheet on the rotating station, and the other is configured to release the sheet conveyed to the second conveying mechanism.

8. The sheet transport mechanism according to claim 1, characterized in that: There are two first transfer components, and the two first transfer components are arranged on both sides of the second transfer component in a partially overlapping manner along the second direction.

9. The sheet transport mechanism according to claim 1, characterized in that: The sheet transport mechanism further includes an air blowing assembly for blowing away debris at the rotating station.

10. The sheet transport mechanism according to claim 1, characterized in that: The sheet transfer mechanism further includes a detection component, which is installed at the input end of the first transfer component and is used to detect whether the sheet picked up by the first transfer component is tilted.

11. The sheet transport mechanism according to claim 10, characterized in that: The detection component includes one photoelectric sensor, two photoelectric sensors, or four photoelectric sensors; When the detection component adopts a photoelectric sensor, the photoelectric sensor is located on either side of the first transfer component; When the detection component uses two photoelectric sensors, the two photoelectric sensors are respectively located on the same side of the first transfer component, or are diagonally arranged on both sides of the first transfer component; When the detection component uses four photoelectric sensors, the four photoelectric sensors are arranged in groups of two on both sides of the first transfer component.

12. The sheet transport mechanism according to claim 1, characterized in that: The sheet transfer mechanism further includes an in-position sensor, which is arranged at the input end of the second transfer component and / or the sheet unloading end of the second transfer component.

13. The sheet transport mechanism according to claim 1, characterized in that: The sheet transport mechanism further includes a steering sensor, which is disposed below the overlapping area and configured to detect whether the sheet, after being turned on the rotating station, has turned to a predetermined angle.

14. A sheet feeding device, characterized in that: The sheet loading device comprises a first conveying mechanism and a second conveying mechanism arranged in parallel, a rotating mechanism, and a sheet transfer mechanism according to any one of claims 1 to 13; wherein: The first conveying mechanism is located on a first side of the second conveying mechanism, and the first conveying mechanism and the second conveying mechanism are respectively configured to convey the sheet along a first direction; The sheet transfer mechanism spans above the first conveying mechanism and the second conveying mechanism, and the rotating mechanism is located below the overlapping area; The sheet transport mechanism is configured to pick up the sheet on the first conveying mechanism, transport the sheet to the overlapping area, and then release it onto the rotating mechanism; the rotating mechanism is configured to rotate the sheet by a predetermined angle in a horizontal plane; the sheet transport mechanism is further configured to transport the sheet rotated by the predetermined angle on the rotating mechanism to the top of the second conveying mechanism and then release it; The second conveying mechanism is further configured to convey the sheet to a subsequent workstation.

15. The sheet feeding device according to claim 14, characterized in that: There are two sheet transport mechanisms and two rotating mechanisms; The two sheet transport mechanisms are arranged above the first conveying mechanism and the second conveying mechanism at intervals along the first direction, and one rotating mechanism is arranged below the overlapping area of ​​each sheet transport mechanism.

16. The sheet feeding device according to claim 14, characterized in that: There are two first conveying mechanisms; another first conveying mechanism is located on a second side of the second conveying mechanism opposite to the first side.

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