A solar cell tray loading and unloading mechanism

Abstract

This utility model relates to a solar cell tray picking and placing mechanism, including a picking and placing mechanism and a positioning mechanism. The picking and placing mechanism includes a picking plate, a telescopic mechanism, and a picking and placing connecting plate. The telescopic mechanism is mounted on the picking and placing connecting plate, and the picking plate is mounted on the moving module of the telescopic mechanism. The positioning mechanism includes two sets of lower connecting plates and a supporting horizontal plate. A lifting cylinder is provided on the lower connecting plate, and the top of the telescopic rod of the lifting cylinder is fixed below the supporting horizontal plate. The picking and placing mechanism and the positioning mechanism of this application cooperate to pick and place the tray, and combined with the hopper and lifting mechanism, can expand the number of gears in the grading area. It can be configured according to actual needs and connected to the production line, offering high flexibility and facilitating the upgrading and transformation of existing production line testing equipment.

Description

Technical Field

[0001] This utility model relates to the field of solar cell production and testing technology, and in particular to a solar cell tray picking and placing mechanism. Background Technology

[0002] Tandem solar cells typically employ a multi-junction stacking design. A typical triple-junction gallium arsenide (GaAs) cell consists of three layers stacked: GaInP (top junction, ~1.8 eV), GaAs (middle junction, ~1.42 eV), and Ge (bottom junction, ~0.67 eV). Each layer absorbs different wavelengths of sunlight, and each layer independently forms a PN junction. The cell shape differs from conventional crystalline silicon cells; its electrodes are generally located on the side. The manufactured cells require IV testing, EL testing, performance testing, and defect assessment before being classified and graded. Existing testing lines have the following two problems:

[0003] The existing material tray support structure in the tiered solar cell sorting area mostly adopts a simple fixed bracket. After the material tray is full, it is picked up by the gripper of the robotic arm and placed into the unloading position. Then, it is manually transferred to the hopper and then taken to the next process by the AGV. Since there are many flat material trays of solar cells, they need to be transferred quickly. After being transported out, the use of the material tray is affected, the overall production efficiency is reduced, and it cannot be effectively linked with the existing automated production line.

[0004] Because there are many grades, a large number of material trays are needed. The material trays are laid flat and occupy a large area, which requires a high range of motion for the grade sorting robot. The SCARA robot currently used can usually achieve a repeatability of ±0.02mm on the horizontal plane to ensure the accurate gripping and placement of the battery cells. However, its horizontal range of motion is limited. For the existing material trays, it can cover 8 workstations. If further refined grading is desired, its arm span needs to be expanded, which increases the footprint and makes the upgrade cost high.

[0005] Therefore, it is necessary to solve the problems of caching and fast material unloading in the grading system. Utility Model Content

[0006] To overcome the aforementioned shortcomings, the purpose of this utility model is to provide a solar cell tray picking and placing mechanism.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a solar cell tray picking and placing mechanism, including a picking and placing mechanism and a positioning mechanism. The picking and placing mechanism includes a picking plate, a telescopic mechanism, and a picking and placing connecting plate. The telescopic mechanism is assembled on the picking and placing connecting plate, and the picking plate is assembled on the moving module of the telescopic mechanism. The positioning mechanism includes two sets of lower connecting plates and a support cross plate. Each support cross plate is provided with two light rods below it. The lower connecting plate is provided with a sleeve corresponding to the light rod. The light rod is assembled in the sleeve. The lower connecting plate is provided with a lifting cylinder. The top of the telescopic rod of the lifting cylinder is fixed below the support cross plate.

[0008] Specifically, the material handling plate is uniformly provided with multiple vacuum nozzles.

[0009] Specifically, the telescopic mechanism of the picking and placing mechanism includes a drive module and a moving module. The drive module includes a slide rail, a transmission screw, and a servo motor. The moving module includes a slider and a screw nut. The slide rail is mounted on the picking and placing connecting plate. The front end of the transmission screw is mounted on the picking and placing connecting plate through a bearing seat. The rear end of the transmission screw is connected to the output end of the servo motor through a coupling. The servo motor is fixedly mounted on the picking and placing connecting plate through a motor bracket. A slider is mounted on the slide rail, and a screw nut is mounted on the transmission screw. The slider and screw nut are fixed on the lower surface of the mounting plate. The rear end of the picking plate is fixedly mounted on the mounting plate.

[0010] Specifically, the pick-and-place connecting plate is equipped with a photoelectric switch, and photoelectric sensing sheets are provided on both sides of the first mounting plate.

[0011] Specifically, the front end of the pick-and-place connecting plate is provided with a second mounting plate, and a first in-situ sensor is mounted on the second mounting plate, with the first in-situ sensor facing forward and upward.

[0012] Specifically, one end of the supporting horizontal plate is provided with an end limiting block, the outer side of the supporting horizontal plate is provided with a side limiting block, and the other end of the supporting horizontal plate is provided with a positioning baffle. The positioning baffle is assembled on the end of the telescopic rod of the positioning cylinder. The cylinder body of the positioning cylinder is fixed on the supporting horizontal plate. One of the supporting plates is provided with an avoidance groove on its inner side, and a second in-situ sensor is provided at the avoidance groove.

[0013] Specifically, it also includes a hopper, which is mounted on the elevator.

[0014] Specifically, the moving module of the elevator is equipped with a bracket, and the hopper is placed on the bracket.

[0015] Specifically, the hopper includes two side walls, the lower ends of which are connected by a base plate, and the top of which is fixed by an upper connecting beam. Multiple brackets are evenly arranged on the inner side of the side walls, and the brackets between the two side walls correspond one-to-one.

[0016] The beneficial effects of this utility model are as follows: The structure of this application is simple. The picking and placing mechanism can drive the material tray to move back and forth. The vacuum suction nozzle makes the adsorption more stable. The positioning mechanism can position accurately and ensure the safety of the material tray during the transfer process. The picking and placing mechanism and the positioning mechanism cooperate to pick and place the material tray. Combined with the hopper and the lifting mechanism, the number of gears in the grading area can be expanded. It can be configured according to actual needs and connected to the production line. It has a high degree of flexibility and is conducive to upgrading and transforming the existing production line testing equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0018] Figure 2 This is a schematic diagram of the picking and placing mechanism of Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the positioning mechanism structure of Embodiment 1 of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0021] Figure 5 This is a schematic diagram of the silo structure of Embodiment 2 of this utility model.

[0022] Figure 6 This is a schematic diagram of the hopper assembled on the lifting mechanism in Embodiment 2 of this utility model.

[0023] The diagram shows: 1. Picking and placing mechanism; 101. Picking and placing hand; 1011. Suction cup; 1012. First mounting plate; 102. Slider; 1021. Slide rail; 104. Lead screw nut; 1041. Transmission lead screw; 105. Coupling; 106. Motor bracket; 107. Servo motor; 108. Second mounting plate; 109. First in-situ sensor; 110. Photoelectric switch; 2. Positioning mechanism; 201. Lower connecting plate; 202. Supporting cross plate; 203. Smooth rod; 204. Sleeve; 207. Lifting cylinder; 2071. Lifting telescopic rod; 208. Second in-situ sensor; 3. Material tray; 4. Battery cell; 5. Material bin; 501. Side wall; 502. Base plate; 503. Upper connecting beam; 504. Tray frame; 6. Linear lift; 7. Bracket. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figure 1 , 2A solar cell tray picking and placing mechanism shown in Figure 3 includes a picking and placing mechanism 1 and a positioning mechanism 2. The picking and placing mechanism 1 includes a picking plate 101, a telescopic mechanism, and a picking and placing connecting plate 103. The telescopic mechanism is mounted on the picking and placing connecting plate 103, and the picking plate 101 is mounted on the end of the telescopic mechanism. The positioning mechanism 2 includes two sets of lower connecting plates 201 and a support cross plate 202. The lower connecting plates 201 and the support plates 202 are arranged vertically and vertically respectively, and the two lower connecting plates 201 are arranged parallel to each other. Two light rods 203 are provided below each support cross plate 202, and the lower connecting plates 201 are provided with corresponding light rods. The sleeve 204, the smooth rod 203 is assembled inside the sleeve 204, the lower connecting plate 201 is provided with a lifting cylinder 207, the top of the telescopic rod 2071 of the lifting cylinder 207 is fixed below the support horizontal plate 202, the lifting cylinder 207 drives the support horizontal plate 202 to move up and down, the pick-and-place connecting plate 103 is used to fix the pick-and-place mechanism on the test platform, the lower connecting plate 201 is used to fix the positioning mechanism 2 on the test platform, the picking plate 101 is located inside the positioning mechanism, that is, between the two lower connecting plates 201, and is used to pick up or put down the material tray 3 on the support horizontal plate 202.

[0027] Specifically, the material receiving plate 101 is uniformly provided with a plurality of vacuum nozzles 1011, and the vacuum nozzles 1011 are connected to the vacuum system through pipelines. The vacuum system in the factory is existing technology and will not be described in detail here.

[0028] Specifically, the telescopic mechanism of the pick-and-place mechanism 1 includes a drive module and a moving module. The drive module includes a slide rail 102, a transmission screw 104, and a servo motor 107. The moving module includes a slider 1021 and a screw nut 1041. The slide rail 102 is mounted on the pick-and-place connecting plate 103. The front end of the transmission screw 104 is mounted on the pick-and-place connecting plate 103 via a bearing seat. The rear end of the transmission screw 104 is connected to the output end of the servo motor 107 via a coupling 105. The servo motor 107 is fixedly mounted on the pick-and-place connecting plate 103 via a motor bracket 106. To enable the transmission screw 104 to... The transmission screw rotates stably, and the rear end of the transmission screw is also mounted in the bearing, which is mounted on the motor bracket 106. The slide rail 102 is equipped with a slider 1021, and the transmission screw 104 is equipped with a screw nut 1041. The slider 1021 and the screw nut 1041 are fixed on the lower surface of the mounting plate 1012. The rear end of the picking plate 101 is fixedly mounted on the mounting plate 1012. The servo motor 107 drives the transmission screw 104 to rotate, and the transmission screw 104 drives the screw nut 1041 to move back and forth, thereby driving the picking plate 101 to move back and forth, realizing the function of transporting the material tray 3.

[0029] Specifically, the pick-and-place connecting plate 103 is provided with a photoelectric switch 110, and photoelectric sensing sheets are provided on both sides of the first mounting plate 1012. The photoelectric sensing sheets move back and forth with the first mounting plate 1012 and can slide into the photoelectric switch 110 to make it react, making the position sensing more accurate and effectively ensuring the positioning of the pick-and-place plate and making it effectively aligned with the position of the material tray. The photoelectric switch adopts the EE-SX672 slot-type photoelectric sensor launched by Omron.

[0030] Specifically, the front end of the pick-and-place connecting plate 103 is provided with a second mounting plate 108, and a first in-situ sensor 109 is mounted on the second mounting plate 108. The first in-situ sensor 109 faces forward and upward and is used to detect whether there is a material tray 3 in the corresponding position in the hopper 5.

[0031] Specifically, one end of the supporting horizontal plate 202 is provided with an end limiting block 204, and the outer side of the supporting horizontal plate is provided with a side limiting block 208. The other end of the supporting horizontal plate 202 is provided with a positioning baffle 205. The positioning baffle 205 is assembled to the end of the telescopic rod of the positioning cylinder 206. The cylinder body of the positioning cylinder 206 is fixed on the supporting horizontal plate 202. One of the supporting plates is provided with an clearance groove on its inner side, and a second presence sensor 208 is provided at the clearance groove. The first presence sensor and the second presence sensor are SICK-GL6 photoelectric sensors. When there is no material tray body... At 4 o'clock, the telescopic rod of the positioning cylinder 206 drives the positioning baffle 205 to move away from the end limit block 204. The positioning space is large, and the material tray body 4 is placed into the positioning bracket. The positioning photoelectric switch senses that the material tray body 4 is in place. The telescopic rod of the positioning cylinder 206 drives the positioning baffle 205 to move towards the end limit block 204, bringing the material tray body 4 close to the end limit block 204. This can accurately position the tray, making it easy for the material picker 101 to effectively receive the material tray 3. When this position is the full tray unloading position, it is also beneficial for the crane gripper to effectively place the material tray 3.

[0032] Example 2

[0033] like Figure 4 , 5 As shown in Figure 6, a solar cell tray picking and placing mechanism also includes a hopper 5, which is mounted on a lifting platform 6. The lifting platform can be equipped with a suitable linear lifting module as needed. The moving module of the lifting platform 6 is equipped with a bracket 7. Furthermore, in order to connect with the production line, a conveying module can be mounted on the bracket 7 as needed to connect with other production lines and realize automatic unloading.

[0034] Specifically, the hopper 5 includes two side walls 501, the lower ends of the side walls 501 are connected by a base plate 502, and the top of the side walls 501 is further fixed by an upper connecting beam. Multiple brackets are evenly provided on the inner side of the side walls 501, and the brackets between the two side walls 501 correspond one to one to prevent the material tray from being damaged.

[0035] In use, the tray 3 is placed above the support plate 202. Under the extension and retraction of the telescopic rod 2071, the support plate 202 can move up and down. The relationship between the pick-and-place mechanism 1 and the positioning mechanism 2 is as follows: Figure 1 , 5 As shown, during unloading, the lifting cylinder 207 of the positioning mechanism 2 raises the supporting horizontal plate 202 to a set position, the telescopic mechanism of the pick-and-place mechanism 1 retracts, and the picking plate 101 of the picking mechanism 1 is positioned inside the positioning mechanism 2, that is, the material tray 5 is located on the supporting horizontal plate 202 of the positioning mechanism 2. The lifting cylinder 207 lowers the set distance, and the material tray 3 falls above the picking plate 101. The vacuum nozzle 1011 on the picking plate 101 performs vacuum adsorption. After the negative pressure value is reached, the material tray is lifted, completing the action of fixing the picking tray; the telescopic mechanism of the picking mechanism 1... The mechanism extends and pushes the picking plate 101 with the material tray 3 into the slot in the hopper 3. The vacuum nozzle 1011 on the picking plate 101 is inflated, releasing the material tray. The lifting mechanism 6 lifts it a certain distance, and the material tray 3 falls onto the tray frame 304. The telescopic mechanism of the picking and placing mechanism 1 retracts, realizing the function of unloading. Depending on the situation, a complete set of picking and placing mechanisms 1 and positioning mechanisms 2 can be set up on the production line to cooperate with the hopper 5 and the elevator 6 to realize the functions of unloading and buffering. The specific layout and the number of sets used can be further designed according to actual production needs.

[0036] This utility model is not limited to the described embodiments. Anyone should know that any structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

[0037] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A solar cell tray picking and placing mechanism, comprising a picking and placing mechanism and a positioning mechanism, characterized in that: The picking and placing mechanism includes a picking plate, a telescopic mechanism, and a picking and placing connecting plate. The telescopic mechanism is mounted on the picking and placing connecting plate, and the picking plate is mounted on the moving module of the telescopic mechanism. The positioning mechanism includes two sets of lower connecting plates and a support cross plate. Each support cross plate has two light rods below it. The lower connecting plate has a sleeve corresponding to the light rods. The light rods are mounted in the sleeves. The lower connecting plate has a lifting cylinder. The top of the telescopic rod of the lifting cylinder is fixed below the support cross plate.

2. The solar cell tray placement and removal mechanism according to claim 1, characterized in that: The material handling plate is evenly provided with multiple vacuum nozzles.

3. The solar cell tray loading and unloading mechanism according to claim 1, characterized in that: The telescopic mechanism of the pick-and-place mechanism includes a drive module and a moving module. The drive module includes a slide rail, a transmission screw, and a servo motor. The moving module includes a slider and a screw nut. The slide rail is mounted on the pick-and-place connecting plate. The front end of the transmission screw is mounted on the pick-and-place connecting plate via a bearing seat. The rear end of the transmission screw is connected to the output end of the servo motor via a coupling. The servo motor is fixedly mounted on the pick-and-place connecting plate via a motor bracket. A slider is mounted on the slide rail, and a screw nut is mounted on the transmission screw. The slider and screw nut are fixed on the lower surface of the mounting plate. The rear end of the pick-and-place plate is fixedly mounted on the mounting plate.

4. The solar cell tray loading and unloading mechanism according to claim 1, characterized in that: The pick-and-place connecting plate is equipped with a photoelectric switch, and photoelectric sensing sheets are provided on both sides of the first mounting plate.

5. The solar cell tray placement and removal mechanism according to claim 1, characterized in that: The front end of the pick-and-place connecting plate is provided with a second mounting plate, and a first in-situ sensor is mounted on the second mounting plate, with the first in-situ sensor facing forward and upward.

6. The solar cell tray loading and unloading mechanism according to claim 1, characterized in that: One end of the support plate is provided with an end limiting block, the outer side of the support plate is provided with a side limiting block, and the other end of the support plate is provided with a positioning baffle. The positioning baffle is assembled on the end of the telescopic rod of the positioning cylinder. The cylinder body of the positioning cylinder is fixed on the support plate. One of the support plates is provided with an avoidance groove on its inner side, and a second in-situ sensor is provided at the avoidance groove.

7. The solar cell tray placement and removal mechanism according to claim 1, characterized in that: It also includes a hopper, which is mounted on the elevator.

8. A solar cell tray placement and removal mechanism according to claim 7, characterized in that: The moving module of the elevator is equipped with a bracket, and the hopper is placed on the bracket.

9. A solar cell tray placement and removal mechanism according to claim 7 or 8, characterized in that: The hopper includes two side walls, the lower ends of which are connected by a base plate, and the top of which is fixed by an upper connecting beam. Multiple brackets are evenly arranged on the inner side of the side walls, and the brackets between the two side walls correspond one-to-one.

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