Welding strip positioning tool

Abstract

The utility model relates to the technical field of photovoltaic module manufacturing, and particularly discloses a welding strip positioning tool. The welding strip positioning tool comprises a front clamping jaw module and a rear clamping jaw module which are located at the two ends of a battery piece containing platform. Each of the front clamping jaw module and the rear clamping jaw module comprises a clamping jaw seat, a clamping jaw trigger piece arranged on the clamping jaw seat and a clamping jaw assembly used for clamping a welding strip; the clamping jaw seat can move towards or away from the battery piece placing platform; the clamping jaw triggering piece can trigger the clamping jaw assembly to be opened under the action of external force. When no external force acts on the clamping jaw triggering piece, the clamping jaw assembly is in a closed state; and a group of tightening elastic pieces are arranged between the clamping jaw seat of the rear clamping jaw module and the battery piece placing platform. The welding strip positioning tool can effectively solve the problem that the welding strip cannot be tightly attached to the grid lines on the surfaces of the battery pieces due to local slight bending caused by metal ductility of the welding strip, and the string quality of the battery pieces is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module manufacturing technology, and in particular to a welding strip positioning fixture. Background Technology

[0002] In existing technologies, there are generally three methods for fixing the solder ribbon to the solar cell: welding, adhesive application, and film coating. When fixing the solder ribbon to the solar cell, the solar cell needs to be transported to a designated workstation first, then a set of solder ribbons is placed on the surface of the solar cell, and finally the solder ribbons on the solar cell are connected to the solar cell as a whole.

[0003] The currently used welding strip positioning fixture includes a welding strip pusher plate and a welding strip placement plate located at both ends of the cell placement platform. The welding strip pusher plate can move towards or away from the cell placement platform to align one end of each welding strip with one side of the cell. The welding strip placement plate supports the welding strip segments extending from the cell and has several welding strip slots for positioning each segment. However, after the welding strip is placed on the cell, due to its metallic ductility, the welding strip is prone to slight bending in certain areas. This hinders the adhesion of the welding strip to the grid lines on the cell surface, resulting in low quality of the cell strings. Summary of the Invention

[0004] The purpose of this invention is to propose a welding strip positioning fixture, which can effectively solve the problem that the welding strip cannot be tightly attached to the grid lines on the surface of the battery cell due to the slight local bending caused by the metal ductility of the welding strip itself, thereby improving the quality of battery cell stringing.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A welding strip positioning fixture includes a front gripper module and a rear gripper module located at both ends of a solar cell placement platform. Each of the front and rear gripper modules includes a gripper base, a gripper trigger element disposed on the gripper base, and a gripper assembly for gripping the welding strip. The gripper base is movable toward or away from the solar cell placement platform. The gripper trigger element can trigger the gripper assembly to open under external force. When no external force is applied to the gripper trigger element, the gripper assembly is in a closed state.

[0007] A set of tensioning elastic elements is provided between the gripper seat of the rear gripper module and the battery cell placement platform.

[0008] Furthermore, the gripper assembly includes a first clamping plate and a second clamping plate slidably connected to the gripper seat. The first clamping plate has a plurality of first grippers arranged side by side, and the second clamping plate has a plurality of second grippers arranged side by side. Each first gripper and each second gripper is alternately arranged. Clamping elastic elements are respectively provided between the first clamping plate and the second clamping plate and the gripper seat.

[0009] Furthermore, a clamping plate limiting groove is provided in the gripper seat, and the first clamping plate and the second clamping plate are slidably disposed in the clamping plate limiting groove; the clamping ends of the first gripper and the second gripper extend out of the clamping plate limiting groove; the two clamping elastic elements are located at both ends of the clamping plate limiting groove.

[0010] Furthermore, the gripper trigger includes a trigger rod that is movably connected to the lower part of the gripper seat, and a reset elastic element is provided between the trigger rod and the gripper seat; the trigger rod is hinged to two connecting rods, one of which is hinged to the first clamping plate and the other of which is hinged to the second clamping plate.

[0011] Furthermore, it also includes a first drive assembly for applying external force to the gripper trigger of the front gripper module and a second drive assembly for applying external force to the gripper trigger of the rear gripper module; both the first drive assembly and the second drive assembly include a push block for pushing against the gripper trigger and a lifting drive for driving the push block to rise and fall.

[0012] Furthermore, the second drive assembly also includes a side pusher for pushing against the gripper seat and a compression drive for driving the side pusher to move toward or away from the battery cell placement platform.

[0013] Furthermore, a roller is rotatably mounted on the side pusher, and the roller makes rolling contact with the gripper trigger.

[0014] Furthermore, the gripper seat has a first groove for positioning the welding strip.

[0015] Furthermore, a welding strip support is provided on the side of the rear gripper module opposite to the battery cell placement platform; the top surface of the welding strip support is provided with several second grooves for positioning the welding strip.

[0016] Furthermore, the tensioning elastic element is a spring.

[0017] The beneficial effects of this utility model are as follows: Before the welding strip is placed, the clamp triggering element triggers the corresponding clamp assembly to open under the action of external force; after the welding strip is placed, the two clamp assemblies clamp the welding strip; under the elastic force of the tensioning elastic element, the clamp seat of the rear clamp module moves away from the battery cell placement platform, thereby tightening the welding strip on the battery cell, so that the welding strip can be completely attached to the grid lines on the surface of the battery cell, thereby improving the quality of battery cell stringing. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a welding strip positioning fixture provided by this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the front gripper module.

[0020] Figure 3 This is a schematic diagram of the gripper trigger mechanism.

[0021] Figure 4 This is a schematic diagram of the structure of the first driving component.

[0022] Figure 5 This is a schematic diagram of the structure of the second drive component.

[0023] Figure 6 This is a schematic diagram of another embodiment of the welding strip positioning fixture provided by this utility model. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 6 As shown, a welding strip positioning fixture includes a front gripper module 2 and a rear gripper module 3 located at both ends of a battery cell placement platform 1, a first drive assembly 7 and a second drive assembly 8.

[0026] Specifically, such as Figures 2 to 4 As shown, the front gripper module 2 includes a gripper base 4, a gripper trigger 6 disposed on the gripper base 4, and a gripper assembly 5 for gripping the welding strip. The gripper base 4 can move toward or away from the battery cell placement platform 1; the gripper trigger 6 can trigger the gripper assembly 5 to open under the action of an external force; when no external force is applied to the gripper trigger 6, the gripper assembly 5 is in a closed state.

[0027] In the front gripper module 2, such as Figure 2 and 3 As shown, the gripper assembly 5 includes a first clamping plate 51 and a second clamping plate 52 slidably connected to the gripper base 4. The first clamping plate 51 has a plurality of first grippers 511 arranged side-by-side, and the second clamping plate 52 has a plurality of second grippers 521 arranged side-by-side. The first grippers 511 and the second grippers 521 are alternately arranged. Clamping elastic elements 53 are respectively provided between the first clamping plate 51 and the second clamping plate 52 and the gripper base 4. In this embodiment, the clamping elastic element 53 is preferably a spring.

[0028] Furthermore, a clamping plate limiting groove 41 is provided in the gripper seat 4, and the first clamping plate 51 and the second clamping plate 52 are slidably disposed in the clamping plate limiting groove 41; the clamping ends of the first gripper 511 and the second gripper 521 extend out of the clamping plate limiting groove 41; and two clamping elastic elements 53 are located at both ends of the clamping plate limiting groove 41.

[0029] In the front gripper module 2, such as Figure 3 As shown, the gripper trigger 6 includes a trigger rod 61 that is movably connected to the gripper seat 4 below. A reset elastic element 63 is provided between the trigger rod 61 and the gripper seat 4. The trigger rod 61 is hinged to two connecting rods 62, one of which is hinged to the first clamping plate 51, and the other connecting rod 62 is hinged to the second clamping plate 52. In this embodiment, the reset elastic element 63 is preferably a spring.

[0030] In the front gripper module 2, before placing the battery cell, the gripper base 4 moves away from the battery cell placement platform 1, causing the gripper assembly 5 to move away from the battery cell placement platform 1, so as to prevent the gripper assembly 5 from damaging the battery cell during the placement process. Before placing the solder ribbon, the gripper base 4 moves towards the battery cell placement platform 1, so that the gripping end of the gripper assembly 5 moves above the battery cell, so as to grip the solder ribbon placed on the battery cell.

[0031] In this welding strip positioning fixture, the first drive assembly 7 is used to apply external force to the gripper trigger 6 of the forward gripper module 2. In this embodiment, as shown... Figure 4 As shown, the first drive assembly 7 includes a push block 71 for pushing the gripper trigger 6 upward and a lifting drive 72 for driving the push block 71 to rise and fall; the lifting drive 72 is preferably a cylinder.

[0032] In use, driven by the lifting drive 72, the push block 71 moves upward; after contacting the trigger rod 61, the push block 71 continues to move upward, thereby pushing the trigger rod 61 upward; under the linkage of the two connecting rods 62, the first clamping plate 51 and the second clamping plate 52 move in opposite directions, thereby opening the gripper assembly 5. After the welding strip is placed, the lifting drive 72 drives the push block 71 to reset; under the elastic force of the reset elastic member 63, the gripper trigger member 6 resets, and the first clamping plate 51 and the second clamping plate 52 move towards each other under the elastic force of the two clamping elastic members 53, thereby enabling the gripper assembly 5 to clamp the welding strip.

[0033] In this welding strip positioning fixture, the structure of the rear gripper module 3 is similar to that of the front gripper module 3, including a gripper base 4, a gripper trigger 6 disposed on the gripper base 4, and a gripper assembly 5 for gripping the welding strip; the gripper base 4 can move toward or away from the battery cell placement platform 1; the gripper trigger 6 can trigger the gripper assembly 5 to open under the action of external force; when no external force is applied to the gripper trigger 6, the gripper assembly 5 is in a closed state. A set of tensioning elastic elements 31 is provided between the gripper base 4 of the rear gripper module 3 and the battery cell placement platform 1. In this embodiment, the tensioning elastic element 31 is preferably a spring.

[0034] The structure of the gripper trigger 6 and gripper assembly 5 in the rear gripper module 3 can be referenced from the structure of the gripper trigger 6 and gripper assembly 5 in the front gripper module 2. It should be noted that in the gripper assembly 5 of the front gripper module 2, since it needs to clamp the solder strip located above the battery cell, the clamping ends of the first gripper 511 and the second gripper 521 are located on one side of the gripper base 4; while in the gripper assembly 5 of the rear gripper module 3, since it needs to clamp the solder strip located above the gripper base 4, the clamping ends of the first gripper 511 and the second gripper 521 are located above the gripper base 4.

[0035] In this welding strip positioning fixture, the second drive assembly 8 is used to apply external force to the gripper trigger 6 of the rear gripper module 3. In this embodiment, as shown... Figure 5 As shown, the second drive assembly 8 includes a push block 71 that pushes upward against the gripper trigger 6 and a lifting drive 72 that drives the push block 71 to move up and down. Furthermore, the second drive assembly 8 also includes a side pusher 81 for laterally pushing against the trigger rod 61 and a compression drive 82 that drives the side pusher 81 to move toward or away from the battery cell placement platform 1; the compression drive 82 is preferably a cylinder. The lifting drive 72 is preferably a cylinder connected to the driving end of the compression drive 82.

[0036] In use, before placing the welding strip, the compression drive 82 drives the side pusher 81 to move toward the battery cell placement platform 1. The side pusher 81 pushes the rear gripper module 3 to move toward the battery cell placement platform 1 together, so that the tensioning elastic member 31 is in a compressed state. After the front gripper module 2 and the rear gripper module 3 clamp the welding strip, the compression drive 82 drives the side pusher 81 to reset. Under the elastic force of the tensioning elastic member 31, the rear gripper module 3 clamps the welding strip and moves away from the battery cell placement platform 1, thereby tightening the welding strip.

[0037] Furthermore, a roller 83 is rotatably mounted on the side pusher 81, which makes rolling contact with the gripper seat 4 to reduce contact wear.

[0038] In this welding strip positioning fixture, the gripper seat 4 has a first groove 42 for positioning the welding strip. In this embodiment, the first grooves 42 on the gripper seat 4 of the front gripper module 2 are located on the side of the gripping end of the gripper assembly 5 away from the battery cell placement platform 1; the first grooves 42 on the gripper seat 4 of the rear gripper module 3 are preferably located on both sides of the gripping end of the gripper assembly 5.

[0039] In this welding strip positioning fixture, such as Figure 6 As shown, a welding strip support frame 9 is provided on the side of the rear gripper module 3 away from the battery cell placement platform 1; the top surface of the welding strip support frame 9 is provided with several second grooves 91 for positioning the welding strip.

[0040] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A welding strip positioning fixture, characterized in that, The device includes a front gripper module (2) and a rear gripper module (3) located at both ends of the cell placement platform (1); both the front gripper module (2) and the rear gripper module (3) include a gripper seat (4), a gripper trigger (6) disposed on the gripper seat (4), and a gripper assembly (5) for gripping the solder strip; the gripper seat (4) can move toward or away from the cell placement platform (1); the gripper trigger (6) can trigger the gripper assembly (5) to open under the action of external force; when no external force is applied to the gripper trigger (6), the gripper assembly (5) is in a closed state; A set of tensioning elastic elements (31) is provided between the gripper seat (4) of the rear gripper module (3) and the battery cell placement platform (1).

2. The welding strip positioning fixture according to claim 1, characterized in that, The gripper assembly (5) includes a first clamping plate (51) and a second clamping plate (52) slidably connected to the gripper seat (4). The first clamping plate (51) has a plurality of first grippers (511) arranged side by side, and the second clamping plate (52) has a plurality of second grippers (521) arranged side by side. Each first gripper (511) and each second gripper (521) is alternately arranged. Clamping elastic elements (53) are respectively provided between the first clamping plate (51) and the second clamping plate (52) and the gripper seat (4).

3. The welding strip positioning fixture according to claim 2, characterized in that, The gripper seat (4) has a clamping plate limiting groove (41) inside, and the first clamping plate (51) and the second clamping plate (52) are slidably disposed in the clamping plate limiting groove (41); the clamping ends of the first gripper (511) and the second gripper (521) extend out of the clamping plate limiting groove (41); the two clamping elastic elements (53) are located at both ends of the clamping plate limiting groove (41).

4. A welding strip positioning fixture according to claim 2 or 3, characterized in that, The gripper trigger (6) includes a trigger rod (61) that is movably connected to the gripper seat (4) below. A reset elastic element (63) is provided between the trigger rod (61) and the gripper seat (4). The trigger rod (61) is hinged to two connecting rods (62), one of which is hinged to the first clamping plate (51), and the other is hinged to the second clamping plate (52).

5. The welding strip positioning fixture according to claim 1, characterized in that, It also includes a first drive assembly (7) for applying external force to the gripper trigger (6) of the front gripper module (2) and a second drive assembly (8) for applying external force to the gripper trigger (6) of the rear gripper module (3); the first drive assembly (7) and the second drive assembly (8) each include a push block (71) for pushing against the gripper trigger (6) and a lifting drive (72) for driving the push block (71) to rise and fall.

6. The welding strip positioning fixture according to claim 5, characterized in that, The second drive assembly (8) further includes a side pusher (81) for pushing against the gripper seat (4) and a compression drive (82) for driving the side pusher (81) to move toward or away from the battery cell placement platform (1).

7. The welding strip positioning fixture according to claim 6, characterized in that, A roller (83) is rotatably mounted on the side pusher (81), and the roller (83) makes rolling contact with the gripper trigger (6).

8. The welding strip positioning fixture according to claim 1, characterized in that, The gripper seat (4) has a first groove (42) for positioning the welding strip.

9. The welding strip positioning fixture according to claim 1, characterized in that, The rear gripper module (3) is provided with a welding strip support frame (9) on the side opposite to the battery cell placement platform (1); the top surface of the welding strip support frame (9) is provided with several second grooves (91) for positioning the welding strip.

10. A welding strip positioning fixture according to claim 1, characterized in that, The tensioning elastic element (31) is a spring.

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