Guiding device for straightening welding strip

Abstract

The utility model relates to a welding strip straightening and guiding device for a series welding machine, which comprises a tension control device, a rotating wheel I and a rotating wheel II which are sequentially arranged on a working table along the moving direction of a welding strip, the tension control device comprises a fixed frame and a sliding frame, the fixed frame is fixedly arranged on the working table, and the extending direction of the fixed frame is parallel to the top surface of the working table; the sliding frame is connected to the fixed frame in a sliding mode, a plurality of through holes allowing the welding strips to penetrate through are defined between the fixed frame and the sliding frame, and the sliding frame moves in a reciprocating mode to change the distance between the inner walls of the through holes and the welding strips so as to change friction force between the through holes and the welding strips; the first rotating wheel and the second rotating wheel are both rotationally arranged on the workbench, the first rotating wheel and the second rotating wheel are both provided with a plurality of annular grooves used for being matched with the welding strip, and the annular grooves are used for limiting the advancing track of the welding strip. The technical problem that the welding strip deviates from the main grid line of the battery piece due to the fact that the welding strip is not straightened can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of string welding machines, in particular to a guiding device for straightening welding strips. Background Art

[0002] The string welding machine is an automated equipment specially used in the manufacturing process of solar photovoltaic modules. It uses a high-temperature heat source (such as the high-temperature gas generated by the hot air pipe) to contact the flux-coated welding ribbon and the main grid of the battery cell and apply appropriate pressure to melt the two and form a strong electrical connection. Before welding, the welding ribbon must accurately overlap with the main grid of the battery cell. However, in the actual production process, it is often the case that the welding ribbon is not straightened due to the low tension on the welding ribbon, resulting in the welding ribbon failing to completely cover the main grid of the battery cell when placed on the battery cell, which reduces the welding bonding strength, increases the resistance loss, and affects the performance of the battery string and even the entire photovoltaic module. Utility Model Content

[0003] The utility model provides a guiding device for straightening a welding strip, so as to solve the technical problem that the welding strip deviates from the main grid line of a battery cell due to the welding strip not being straightened.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A guiding device for straightening a welding strip, comprising a tension control device, a rotating wheel 1 and a rotating wheel 2 which are sequentially arranged on a workbench along the moving direction of the welding strip, the tension control device comprising a fixed frame and a sliding frame, the fixed frame is fixed on the workbench and its extension direction is parallel to the top surface of the workbench, the sliding frame is slidably connected to the fixed frame, a plurality of through holes for the welding strip to pass through are formed between the fixed frame and the sliding frame, the sliding frame reciprocates to change the distance between the inner wall of the through hole and the welding strip and thus change the friction between the through hole and the welding strip; the rotating wheel 1 and the rotating wheel 2 are both rotatably arranged on the workbench, the rotating wheel 1 and the rotating wheel 2 are both provided with a plurality of annular grooves for matching with the welding strip, the annular grooves are used to limit the trajectory of the welding strip.

[0006] The beneficial effect is that the welding ribbon needs to pass through the tension control device and rotating wheel one and rotating wheel two in sequence when being transported from the welding ribbon roll to the workbench, thereby increasing the friction between the inner wall of the through hole in the tension control device and the welding ribbon, thereby increasing the tension of the welding ribbon behind the through hole, and the annular grooves on rotating wheel one and rotating wheel two limit the moving trajectory of the welding ribbon, and the tension control device and rotating wheel one and rotating wheel two cooperate with each other, so that the welding ribbon can be straightened and tensioned along a predetermined trajectory, ensuring that the welding ribbon can completely cover the main grid line of the battery cell.

[0007] Furthermore, the fixed frame is provided with a plurality of slots adapted to the welding strips, the sliding frame is located inside the fixed frame, the sliding frame includes a plurality of support plates 1, a connecting plate, and a support plate 2 fixed between the support plate 1 and the connecting plate, the support plate 1 and the inner wall of the slot are combined to form a through hole, a telescopic device 1 is provided between the inner wall of the fixed frame and the connecting plate, the telescopic device 1 is used to change the distance between the support plate 1 and the inner wall of the relative slot, thereby changing the size of the through hole.

[0008] Beneficial effect: By extending and shortening the telescopic device to change the size of the through hole, the soldering tape can be easily passed through when the through hole is enlarged, and it is convenient to replace the soldering tape roll; shrinking the through hole can increase the friction between the inner wall of the through hole and the soldering tape, and the soldering tape can be straightened.

[0009] Furthermore, one end of the fixed frame is closed by a closing plate, and a telescopic device 2 is provided between the closing plate and the sliding frame, which is perpendicular to the moving direction of the connecting plate and parallel to the welding strip located in the through hole. The telescopic device 2 is extended and shortened to drive the support plate 1 to enter and exit the slot; a fixed plate 1 is fixedly provided at the output end of the telescopic device 1, and a fixed plate 2 is fixedly provided at the output end of the telescopic device 2. A slide groove 1 adapted to the fixed plate 1 and a slide groove 2 adapted to the fixed plate 2 are respectively provided on the sliding frame, and the fixed plate 1 is always engaged in the slide groove 1, and the fixed plate 2 is always engaged in the slide groove 2.

[0010] Beneficial effect: The support plate 1 can be driven in and out of the slot by extending and shortening the telescopic device 2. When the support plate 1 is completely located in the fixed frame, the slot is a groove. When replacing the soldering ribbon, the soldering ribbon can be directly engaged in the slot without passing the soldering ribbon through the through hole from top to bottom, which facilitates the replacement of the soldering ribbon roll.

[0011] Furthermore, the telescopic device 1 and the telescopic device 2 are both electric push rods.

[0012] Furthermore, the fixing frame can be detachably connected to the workbench.

[0013] Furthermore, the rotating wheel one includes a plurality of fixed wheels fixed on the rotating shaft, a plurality of movable wheels arranged coaxially with the fixed wheels, and a driving assembly that drives all the movable wheels to synchronously reciprocate along the extension direction of the rotating shaft. The two ends of the rotating shaft are rotatably connected in the bearing seat, and an annular groove is formed between adjacent fixed wheels and movable wheels. The driving assembly is used to adjust the width of the annular groove to accommodate welding strips of various specifications. The rotating wheel two has the same structure as the rotating wheel one.

[0014] Furthermore, the rotating shaft is guided and slidably connected to the moving rod along the extension direction of the rotating shaft, and the multiple moving wheels are fixedly connected to the moving rod through the connecting rod. The rotating shaft is provided with a sliding hole for the connecting rod to move. The driving assembly is a bolt threadedly connected to the rotating shaft and coaxially arranged with the rotating shaft. The stud end of the bolt is rotatably connected to the moving rod. When the bolt is turned, the bolt drives the moving rod to reciprocate along the extension direction of the rotating shaft.

[0015] The beneficial effects are: the width of the annular groove is changed by turning the bolt to adapt to welding strips of different specifications; after the width of the annular groove is changed, the fixing frame can be replaced to meet the straightening needs of welding strips of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the first embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the connection structure of the fixed frame and the sliding frame;

[0018] Figure 3 is a schematic diagram of the structure of the through hole;

[0019] Figure 4 It is a structural schematic diagram of the rotating wheel 1 in the first embodiment;

[0020] Figure 5 This is a schematic diagram of the structure of the second embodiment of the utility model;

[0021] Figure 6 It is a structural schematic diagram of the fixed plate 1 and the slide slot 1, the fixed plate 2 and the slide slot 2;

[0022] Figure 7 This is a schematic structural diagram of a third embodiment of the utility model;

[0023] Figure 8 It is a schematic diagram of the connection structure between the fixing rod and the supporting legs in the second embodiment;

[0024] Fig. 9 It is a schematic diagram of the installation structure of the fixed wheel, the movable wheel and the bolts.

[0025] Description of reference numerals:

[0026] 1. Workbench; 2. Rotating wheel 1; 3. Rotating wheel 2; 4. Top plate; 5. Support leg; 6. Fixed frame; 7. Sliding frame; 8. Fixed rod; 9. Slot; 11. Connecting plate; 12. Support plate 1; 13. Support plate 2; 14. Through hole; 15. Telescopic device 1; 16. Bearing seat; 17. Annular groove; 18. Closing plate; 19. Telescopic device 2; 20. Fixed plate 2; 21. Slide groove 2; 22. Fixed plate 1; 23. Slide groove 1; 24. L-shaped plate; 25. Pin; 26. Rotating shaft; 27. Fixed wheel; 28. Moving wheel; 29. ​​Moving rod; 30. Connecting rod; 31. Slide hole; 32. Bolt; 33. Rotating bearing; 34. Long rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] like Figure 1-Figure 4 The first embodiment of the utility model is shown, a guide device for straightening a welding strip, comprising a tension control device, a rotating wheel 2 and a rotating wheel 3 arranged on a workbench 1 in sequence along the moving direction of the welding strip, the workbench 1 comprises a top plate 4 and a leg 5 fixedly arranged under the top plate 4, the tension control device comprises a fixed frame 6 and a sliding frame 7, as shown in FIG. Figure 1 As shown, the fixing frame 6 is a rectangular shell structure, which is fixedly connected to the support leg 5 by a fixing rod 8, and its extension direction is parallel to the top surface of the top plate 4. The fixing frame 6 is provided with a plurality of slots 9 adapted to the welding strip. The sliding frame 7 is located in the fixing frame 6, as shown in FIG. Figure 2 As shown, the sliding frame 7 includes a connecting plate 11, a plurality of supporting plates 12, and a supporting plate 2 13 fixed between the supporting plate 12 and the connecting plate 11. The supporting plate 12 and the inner wall of the card slot 9 are surrounded to form a through hole 14. The structure of the through hole 14 is as shown in FIG. Figure 3 As shown, the welding strip passes through the through hole 14 from top to bottom. A telescopic device 15 is provided between the inner wall of the fixing frame 6 and the fixing rod 8. The telescopic device 15 is an electric push rod, see Figure 2The fixed end of the telescopic device 15 is fixedly mounted on the inner wall of the fixing frame 6, the working end of the telescopic device 15 is fixedly connected to the connecting plate 11, the telescopic device 15 is perpendicular to the welding strip in the through hole 14, and the telescopic device 15 is extended and shortened to change the distance between the support plate 12 and the inner wall of the opposite card slot 9, thereby changing the size of the through hole 14. When the telescopic device 15 is extended, the through hole 14 is enlarged, and the welding strip is installed in the through hole 14 from top to bottom. When the telescopic device 15 is shortened, the distance between the support plate 12 and the inner wall of the opposite card slot 9 is reduced until the inner wall of the through hole 14 is pressed and fitted with the welding strip, and friction is generated between the inner wall of the through hole 14 and the welding strip.

[0030] The rotating wheel 1 2 and the rotating wheel 2 3 are both rotatably arranged on the workbench 1. Figure 1 As shown, a plurality of bearing seats 16 are fixedly installed on the workbench 1, and both ends of the rotating wheel 1 2 and the rotating wheel 2 3 are rotatably connected in the bearing seats 16 respectively, and the axes around which the rotating wheel 1 2 and the rotating wheel 2 3 rotate are perpendicular to the traveling direction of the welding strip and parallel to the top surface of the top plate 4, and the rotating wheel 1 2 and the rotating wheel 2 3 are arranged up and down, and the bearing seats 16 at both ends of the rotating wheel 1 2 are fixedly installed on the top surface of the top plate 4, and the bearing seats 16 at both ends of the rotating wheel 2 3 are fixedly installed on the support legs 5, as shown in FIG. Figure 4 As shown, the rotating wheel 1 2 is provided with a plurality of annular grooves 17 for matching with the welding strip, and the rotating wheel 2 3 has the same structure as the rotating wheel 1 2 .

[0031] The welding ribbon passes through the through hole 14, and the telescopic device 15 is shortened to increase the friction between the inner wall of the through hole 14 and the welding ribbon. Then, the welding ribbon is clamped in the annular groove 17 of the rotating wheel 1 2 and the rotating wheel 2 3 in turn. The rotating wheel 1 2 and the rotating wheel 2 3 change the direction of the welding ribbon. The annular groove 17 limits the trajectory of the welding ribbon. The welding ribbon is stretched in a direction parallel to the top plate 4 through the clamping device. The friction between the inner wall of the through hole 14 and the welding ribbon increases the tension of the welding ribbon, preventing the welding ribbon from skewing and relaxing during the stretching process, thereby ensuring that the welding ribbon can completely cover the main grid lines of the battery cell placed on the top plate 4.

[0032] Embodiment 2

[0033] like Figure 5-Figure 6 The second embodiment of the utility model is shown in FIG. 1 . The difference between the second embodiment and the first embodiment is that one end of the fixing frame 6 is closed by a closing plate 18. Figure 5 As shown, a telescopic device 19 is provided between the closing plate 18 and the sliding frame 7. The telescopic device 19 is an electric push rod. The fixed end of the telescopic device 19 is fixedly mounted on the closing plate 18. A fixed plate 20 is fixedly provided at the output end of the telescopic device 19. A slide groove 21 adapted to the fixed plate 20 is provided on the connecting plate 11. The fixed plate 20 is engaged in the slide groove 21. The telescopic device 19 is perpendicular to the moving direction of the connecting plate 11 and parallel to the welding strip located in the through hole 14. Figure 6As shown, a fixed plate 22 is fixedly provided at the output end of the telescopic device 15, and a slide groove 23 adapted to the fixed plate 22 is provided on the sliding frame 7, and the fixed plate 22 is engaged in the slide groove 23. The telescopic device 19 is extended and shortened to drive the support plate 12 to enter and exit the slot 9. In this embodiment, the telescopic device 19 is shortened, and the support plate 12 is located in the fixed frame 6. At this time, the slot 9 is a groove. When replacing the welding ribbon, the welding ribbon can be directly engaged in the slot 9 without passing the welding ribbon through the through hole 14 from top to bottom, which is convenient for replacing the welding ribbon roll; after the replacement is completed, the telescopic device 19 is extended, and the support plate 12 enters the slot 9. The through hole 14 is enclosed between the support plate 12 and the inner wall of the slot 9. At this time, the position of the support plate 12 is Figure 3 Similarly, the welding strip is located in the through hole 14, shortening the telescopic device 15, and increasing the friction between the welding strip and the through hole 14. During the movement of the sliding frame 7, the fixed plate 1 22 is always engaged in the slide groove 1 23, and the fixed plate 20 is always engaged in the slide groove 21.

[0034] Embodiment 3

[0035] like Figure 7-Figure 8 The third embodiment of the utility model is shown. The difference between this embodiment and the first embodiment is that the fixing frame 6 is detachably connected to the workbench 1. In this embodiment, Figure 7 and Figure 8 As shown, L-shaped plates 24 are symmetrically fixed on both sides of the fixing rod 8, and a groove for engaging the supporting leg 5 is formed between the L-shaped plate 24 and the fixing rod 8. A corresponding square hole is provided between the L-shaped plate 24 and the supporting leg 5, and a long rod 34 of a rectangular parallelepiped structure is inserted into the square hole. Round holes are provided on both sides of the long rod 34, and a pin 25 is inserted into the round hole. The pin 25 can prevent the long rod 34 from escaping from the square hole. Remove the pin 25, take the fixing rod 8 out of the square hole, and then the fixing frame 6 can be removed. In addition, vertical plates can be vertically fixed on the upper and lower end surfaces of the fixing rod 8, and the vertical plates can be installed on the supporting leg 5 by bolts 32, so that the detachable connection between the fixing frame 6 and the workbench 1 can be realized.

[0036] The rotating wheel 2 includes a plurality of fixed wheels 27 fixed on the rotating shaft 26, a plurality of movable wheels 28 coaxially arranged with the fixed wheels 27, and a driving assembly for driving all movable wheels 28 to reciprocate synchronously along the extending direction of the rotating shaft 26. Both ends of the rotating shaft 26 are rotatably connected in the bearing seat 16, as shown in FIG. Fig. 9 As shown, the rotating shaft 26 is guided and slidably connected to the moving rod 29 along the extending direction of the rotating shaft 26, and a plurality of moving wheels 28 are fixedly connected to the moving rod 29 through a connecting rod 30. The rotating shaft 26 is provided with a sliding hole 31 for the connecting rod 30 to move. Figure 7As shown, the adjacent fixed wheels 27 and moving wheels 28 form an annular groove 17. The driving assembly is a bolt 32 threadedly connected to the rotating shaft 26 and arranged coaxially with the rotating shaft 26. The stud end of the bolt 32 is rotatably connected to the moving rod 29 through a rotating bearing 33. When the bolt 32 is turned, the bolt 32 drives the moving rod 29 to reciprocate along the extending direction of the rotating shaft 26, changing the width of the annular groove 17 to adapt to welding strips of various specifications. After the width of the annular groove 17 is changed, the tension control device is replaced accordingly.

Claims

1. A guiding device for straightening a welding strip, characterized in that: The invention comprises a tension control device, a rotating wheel 1 (2) and a rotating wheel 2 (3) which are sequentially arranged on a workbench (1) along the moving direction of the welding strip, the tension control device comprising a fixed frame (6) and a sliding frame (7), the fixed frame (6) being fixedly arranged on the workbench (1) and extending in a direction parallel to the top surface of the workbench (1), the sliding frame (7) being slidably connected to the fixed frame (6), a plurality of through holes (14) for the welding strip to pass through are formed between the fixed frame (6) and the sliding frame (7), the sliding frame (7) reciprocatingly moving to change the distance between the inner wall of the through hole (14) and the welding strip and thereby changing the friction between the through hole (14) and the welding strip; the rotating wheel 1 (2) and the rotating wheel 2 (3) are both rotatably arranged on the workbench (1), the rotating wheel 1 (2) and the rotating wheel 2 (3) are both provided with a plurality of annular grooves (17) for matching with the welding strip, the annular grooves (17) being used to limit the trajectory of the welding strip.

2. A guide device for straightening a welding strip according to claim 1, characterized in that: The fixed frame (6) is provided with a plurality of slots (9) adapted to the welding strips, the sliding frame (7) is located inside the fixed frame (6), the sliding frame (7) comprises a connecting plate (11), a plurality of support plates (12), and a support plate (13) fixed between the support plate (12) and the connecting plate (11), the support plate (12) and the inner wall of the slot (9) are combined to form a through hole (14), a telescopic device (15) is provided between the inner wall of the fixed frame (6) and the connecting plate (11), the telescopic device (15) is used to change the distance between the support plate (12) and the inner wall of the corresponding slot (9), thereby changing the size of the through hole (14).

3. A guide device for straightening a welding strip according to claim 2, characterized in that: One end of the fixed frame (6) is closed by a closing plate (18); a telescopic device (19) perpendicular to the moving direction of the connecting plate (11) and parallel to the welding strip in the through hole (14) is provided between the closing plate (18) and the sliding frame (7); the telescopic device (19) is extended and shortened to drive the support plate (12) to enter and exit the slot (9); a fixed plate (22) is fixedly provided at the output end of the telescopic device (15); a fixed plate (20) is fixedly provided at the output end of the telescopic device (19); a sliding groove (23) adapted to the fixed plate (22) and a sliding groove (21) adapted to the fixed plate (20) are respectively provided on the sliding frame (7); the fixed plate (22) is always engaged in the sliding groove (23), and the fixed plate (20) is always engaged in the sliding groove (21).

4. A guide device for straightening a welding strip according to claim 3, characterized in that: The telescopic device 1 (15) and the telescopic device 2 (19) are both electric push rods.

5. A guide device for straightening a welding strip according to any one of claims 1 to 4, characterized in that: The fixing frame (6) is detachably connected to the workbench (1).

6. A guide device for straightening a welding strip according to claim 5, characterized in that: The rotating wheel one (2) comprises a plurality of fixed wheels (27) fixed on a rotating shaft (26), a plurality of movable wheels (28) arranged coaxially with the fixed wheels (27), and a driving assembly for driving all the movable wheels (28) to synchronously reciprocate along the extending direction of the rotating shaft (26); both ends of the rotating shaft (26) are rotatably connected in a bearing seat (16); an annular groove (17) is formed between adjacent fixed wheels (27) and movable wheels (28); the driving assembly is used to adjust the width of the annular groove (17) to accommodate welding strips of various specifications; the rotating wheel two (3) has the same structure as the rotating wheel one (2).

7. A guide device for straightening a welding strip according to claim 6, characterized in that: The rotating shaft (26) is guided and slidably connected to a moving rod (29) in the extending direction of the rotating shaft (26); a plurality of moving wheels (28) are fixedly connected to the moving rod (29) via a connecting rod (30); a sliding hole (31) for the connecting rod (30) to move is provided on the rotating shaft (26); the driving component is a bolt (32) threadedly connected to the rotating shaft (26) and coaxially arranged with the rotating shaft (26); a stud end of the bolt (32) is rotatably connected to the moving rod (29); and when the bolt (32) is turned, the bolt (32) drives the moving rod (29) to reciprocate along the extending direction of the rotating shaft (26).

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