High-speed solar cell string manufacturing device

Abstract

The utility model discloses a high-speed solar cell string manufacturing device which comprises a base and a pair of symmetrical string welding units arranged on the base. Each series welding unit comprises a welding device, a welding strip device, a conveying mechanism and a pair of grabbing devices. The welding device and the welding strip device are sequentially arranged on the base in the same direction, and the conveying mechanism, the welding device and the welding strip device are arranged side by side. The junction area of the welding device and the welding strip device is defined as a sheet placing area; the pair of grabbing devices are arranged in the front-back sequence direction of the sheet placing areas correspondingly, the grabbing devices have the rotating capacity so as to rotate towards or away from the sheet placing areas, and the pair of grabbing devices corresponding to the same sheet placing area alternately rotate to be used for grabbing materials on the conveying mechanism.

Description

Technical Field

[0001] This utility model relates to the field of string welding machines, specifically a high-speed solar cell stringing device. Background Technology

[0002] The manufacturing process of photovoltaic modules uses a string welding machine, which uses a mechanical transmission mechanism to transport the solar cells and uses high-temperature gas from hot air pipes to weld the solar cells on a heated base plate.

[0003] Currently, mainstream stringing machines typically use a single robot on one side to transport the solar cells and tooling to the welding conveyor belt for welding operations. However, a single robot on one side limits the production cycle of the stringing machine to the maximum operating speed of the robot itself, affecting the production speed. Forcibly increasing the robot's operating speed can easily lead to problems such as shortening the robot's lifespan. Therefore, this utility model provides a high-speed solar cell stringing device. Utility Model Content

[0004] The purpose of this invention is to provide a high-speed solar cell stringing device to solve the problem of slow production speed of a single robot mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-speed solar cell stringing device includes a base and a pair of symmetrical stringing units disposed on the base. Each stringing unit includes a welding device, a welding strip device, a transport mechanism, and a pair of gripping devices. The welding device and the welding strip device are sequentially disposed on the base in the same direction, and the transport mechanism is disposed side by side with the welding device and the welding strip device. The area where the welding device and the welding strip device intersect is defined as the cell placement area. The pair of gripping devices are respectively disposed in the preceding and following directions of the cell placement area. The gripping devices have the ability to rotate toward or away from the cell placement area. The pair of gripping devices corresponding to the same cell placement area rotate alternately to grip the material on the transport mechanism.

[0007] Preferably, the transport mechanism includes a tooling conveying device and a feeding device; the conveying device and the feeding device are arranged sequentially in the same direction and are used to transport the tooling and the battery cells, respectively.

[0008] Preferably, the welding device includes a light box, which is fixedly installed on the upper side of the welding device for welding the battery cells.

[0009] Preferably, the gripping device includes a fixed frame, a robotic arm, and a suction cup. One end of the robotic arm is rotatably connected to the upper side of the fixed frame, and the other end is fixedly connected to the suction cup. The lower side of the fixed frame is fixedly connected to the base, and is used to grip the battery cells and tooling in the gripping area to the placement area.

[0010] Preferably, one of the fixing frames is fixedly connected to the base between the welding device and the conveying device, and the other fixing frame is fixedly connected to the base between the welding strip device and the feeding device.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Increase the production cycle by increasing the number of robotic arms and reduce the failure rate of the robotic arms; set up two robotic arms in each string welding unit to realize the alternating handling of battery cells and tooling by the robotic arms, so that the whole machine can achieve ultra-high production speed.

[0013] 2. It reduces the workload of a single robotic arm and extends its service life. Under production rates exceeding those of ordinary ultra-high-speed string welding machines, the temperature of the robotic arm can be lower and the maintenance cycle can be longer. This allows the machine's maximum production rate to exceed 12,000 pcs / h, surpassing most ultra-high-speed string welding machines. Attached Figure Description

[0014] Figure 1 This is a top view of the present invention;

[0015] Figure 2 This is a simplified schematic diagram showing the positions of each device within a pair of string welding units of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the two pairs of gripping devices within a pair of string welding units of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the pair of gripping devices of this utility model;

[0019] Figure 6 This is a schematic diagram of the suction cup structure of the present invention connected to the robotic arm located between the welding strip device and the feeding device;

[0020] Figure 7 This is a schematic diagram of the suction cup structure of this utility model connected to the robotic arm located between the welding device and the tooling conveying device.

[0021] In the diagram: 1. Base, 2. Welding device, 21. Light box, 3. Tooling conveying device, 4. Gripping device, 41. Fixture, 42. Robotic arm, 43. Suction cup, 5. Welding strip device, 6. Feeding device, 7. Transport mechanism, 10. String welding unit. Detailed Implementation

[0022] Example 1:

[0023] Please see Figures 1-7As shown, this utility model provides a technical solution: a high-speed solar cell stringing device, including a base 1 and a pair of symmetrical stringing units 10 disposed on the base 1.

[0024] Each string welding unit 10 includes a welding device 2, a welding strip device 5, a transport mechanism 7, and a pair of gripping devices 4.

[0025] Both the welding device 2 and the welding strip device 5 are located on the outside of the base 1, while the transport mechanism 7 is located on the inside of the base 1. The welding device 2 and the welding strip device 5 are arranged sequentially in the same direction. The area where the welding device 2 and the welding strip device 5 intersect is defined as the sheet placement area.

[0026] The transport mechanism 7 includes a tooling conveyor 3 and a loading device 6. The tooling conveyor 3 and the loading device 6 are fixedly connected to the base 1 and are arranged sequentially in the same direction. The tooling conveyor 3 and the loading device 6 are used to transport tooling and battery cells, respectively. The area at the junction of the tooling conveyor 3 and the loading device 6 is defined as the cell-grabbing area.

[0027] The welding device 2 can be a welding structure that uses welding strips to weld the battery cells.

[0028] The welding strip device 5 can be a belt conveyor structure used to transport the welding strip.

[0029] Both the tooling conveyor 3 and the feeding device 6 can be belt conveyor structures, used to transport the tooling and the battery cells respectively. These are existing conventional technologies and will not be elaborated further.

[0030] The gripping device 4 is a robotic arm. The bottom of the robotic arm is fixedly connected to the base 1 and extends upwards above the film-laying area. A pair of robotic arms are respectively positioned in the preceding and following directions of the film-laying area. The robotic arms have the ability to rotate, moving towards or away from the film-laying area; the two robotic arms corresponding to the same film-laying area rotate alternately. Simultaneously, the robotic arms also have a gripping function; since the gripping function of the robotic arms is a conventional technical means, it will not be described in detail here.

[0031] The robotic arms operate as follows: when one robotic arm picks up the tooling and battery cells and transports them to the placement area, the other robotic arm prepares to pick up the new tooling and battery cells that have been transported to the picking area. When one robotic arm returns from the placement area, the other robotic arm transports the new tooling and battery cells it picked up to the placement area. In this way, by having a pair of robotic arms alternately transport the tooling and battery cells back and forth, work efficiency is improved.

[0032] Welding device 2 performs welding using light box 21. The tooling and battery cells in the wafer placement area, along with the welding strip transported by welding strip device 5, are transported together into light box 21 on welding device 2 for welding.

[0033] The gripping device 4 includes a fixed frame 41, a robotic arm 42, and a suction cup 43. One end of the robotic arm 42 is rotatably connected to the upper side of the fixed frame 41, and the other end is fixedly connected to the suction cup 43. The rotation of the robotic arm 42 drives the suction cup 43 to rotate, so as to place the battery cells and tooling from the gripping area into the placement area.

[0034] The fixing frames 41 of the two gripping devices 4 in the same welding unit 10 are fixedly connected to the front and rear directions of the sheet placement area, specifically on the base 1 between the tooling conveying device 3 and the welding device 2 and between the welding strip device 5 and the feeding device 6, so as to avoid collision when the two robotic arms 42 rotate.

[0035] The suction cups 43 of the two gripping devices 4 within the same welding unit 10 are connected to the corresponding robotic arms 42 at different positions (see...). Figure 5 and Figure 6 ).

[0036] Specifically, the middle of either end of the suction cup 43 extends forward, forming a convex structure. One robotic arm 42 is fixedly connected to the forward-extending portion of one of the suction cups 43. The other robotic arm 42 is fixedly connected to the non-forward-extending portion of the other suction cup 43.

[0037] Working principle: After the operator starts the string welding machine, when the tooling transported from the tooling conveyor 3 and the battery cells transported from the feeding device 6 are transported to the grabbing area, one of the robotic arms 42 rotates to the grabbing area and grabs the tooling and battery cells using the suction cup 43, and then rotates to the placing area. During this process, the other robotic arm 42 rotates to the grabbing area at the same time. After one robotic arm 42 places the tooling and battery cells in the placing area, it starts to rotate to the grabbing area again. During this process, the other robotic arm 42 grabs the tooling and battery cells using the suction cup 43, and then rotates to the placing area. By having the two robotic arms 42 rotate alternately to grab the tooling and battery cells, the working rhythm and efficiency are improved, so as to achieve ultra-high production speed. At the same time, it also reduces the workload of a single robotic arm 42 and extends its service life. After the welding strip device 5 delivers the welding strip to the battery cell, it is heated and welded together with the tooling in the light box 21 on the welding device 2, and then it is transported out.

Claims

1. A high-speed solar cell stringing device, characterized in that: It includes a base (1) and a pair of symmetrical welding units (10) arranged on the base (1); each welding unit (10) includes a welding device (2), a welding strip device (5), a transport mechanism (7) and a pair of gripping devices (4); the welding device (2) and the welding strip device (5) are arranged sequentially on the base (1) in the same direction; the transport mechanism (7) is arranged side by side with the welding device (2) and the welding strip device (5); the area where the welding device (2) and the welding strip device (5) meet is defined as the release area; a pair of gripping devices (4) are respectively arranged in the front and rear directions of the release area; the gripping devices (4) have the ability to rotate toward or away from the release area, and the pair of gripping devices (4) corresponding to the same release area rotate alternately to grip the material on the transport mechanism (7).

2. The high-speed solar cell stringing apparatus according to claim 1, characterized in that: The transport mechanism (7) includes a tooling conveying device (3) and a feeding device (6); the conveying device (3) and the feeding device (6) are arranged sequentially in the same direction and are used to transport the tooling and the battery cells respectively.

3. The high-speed solar cell stringing apparatus according to claim 1, characterized in that: The welding device (2) includes a light box (21); the light box (21) is fixedly installed on the upper side of the welding device (2) for welding the battery cells.

4. The high-speed solar cell stringing device according to claim 2, characterized in that: The gripping device (4) includes a fixed frame (41), a robotic arm (42) and a suction cup (43); one end of the robotic arm (42) is rotatably connected to the upper side of the fixed frame (41), and the other end is fixedly connected to the suction cup (43); the lower side of the fixed frame (41) is fixedly connected to the base (1) for gripping the battery cells and tooling in the gripping area to the placement area.

5. The high-speed solar cell stringing apparatus according to claim 4, characterized in that: One of the fixing frames (41) is fixedly connected to the base (1) between the welding device (2) and the conveying device (3); the other fixing frame (41) is fixedly connected to the base (1) between the welding strip device (5) and the feeding device (6).

6. A high-speed solar cell stringing apparatus according to claim 4, characterized in that: The suction cup (43) extends further at the middle of either end to form a convex shape; the suction cups (43) of the two gripping devices (4) in the same welding unit (10) are connected to the corresponding robotic arms (42) at different positions.

7. A high-speed solar cell stringing apparatus according to claim 6, characterized in that: One of the robotic arms (42) is fixedly connected to the extension of one of the suction cups (43); the other robotic arm (42) is fixedly connected to the non-extension part of the other suction cup (43).

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