Solder strip supply tensioning fit structure of series welding machine for solar cell processing

Abstract

The utility model discloses a tensioning fit structure for solder strip supply of a series welding machine for solar cell processing. The tensioning fit structure comprises a charging barrel, a guide wheel, a falling wheel and a guide rail, a welding strip is wound on the surface of the charging barrel; a plurality of guide wheels are arranged, and the welding strip is wound on the surfaces of the guide wheels; the falling wheel is arranged among the plurality of guide wheels, and the welding strip is wound on the surface of the falling wheel; the falling wheel is rotationally connected with a moving block; the two sides of the guide rail are connected with falling wheels, sliding grooves are formed in the side faces, corresponding to the falling wheels, of the guide rail, and sliding blocks are arranged at the positions, corresponding to the sliding grooves, of the moving block and slidably connected into the sliding grooves. According to the tension fit structure, the amplitude that the drop wheel moves up and down is small, the stability is good, and the requirement for the strength of a welding strip is low.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell sheet welding, and more specifically to a tensioning matching structure for supplying welding strips of a string welding machine used for processing solar cells. Background Art

[0002] With the continuous development of photovoltaic cell field, the technical process of photovoltaic cell is constantly improving, and the technology of welding grid line also needs to be improved accordingly. Each welding ribbon needs to be tensioned by an independent tensioning structure during the process of photovoltaic cell string welding to avoid bending of the welding ribbon.

[0003] In the current welding machine, the sinker wheel is connected to the welding strip, and the welding strip is tensioned by the weight of the sinker wheel itself; however, each welding strip is provided with a sinker wheel. In order to tension the welding strip during the continuous transmission of the welding strip, the sinker wheel will continuously float up and down, and the floating range is large, the stability is poor, and the large up and down movement of the sinker wheel requires a high strength of the welding strip.

[0004] Therefore, it is an urgent problem for those skilled in the art to develop a tensioning and fitting structure for supplying solder strips to a stringer for processing solar cells, which has good stability and low requirements on the strength of the solder strips. Utility Model Content

[0005] In view of this, the utility model provides a tensioning and fitting structure for supplying welding strips of a string welding machine used for processing solar cells, which has good stability and low requirements on welding strip strength.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tensioning fit structure for supplying a solder ribbon to a stringer for processing solar cells, comprising:

[0008] A barrel, a surface of which is wound with a welding strip;

[0009] A guide wheel, wherein a plurality of guide wheels are provided, and the welding belt is wound around the surface of the guide wheel;

[0010] A drop wheel, the drop wheel is arranged between the plurality of guide wheels, the welding belt is wound around the surface of the drop wheel; the drop wheel is rotatably connected with a moving block;

[0011] A guide rail, both sides of which are connected with drop wheels, a slide groove is provided on the side of the guide rail corresponding to the drop wheel, a slider is provided at the position of the moving block corresponding to the slide groove, and the slider is slidably connected in the slide groove.

[0012] The beneficial effect of adopting the above technical solution is that in the utility model, two drop wheels are arranged on both sides of the guide rail, which can effectively reduce the amplitude of the up and down movement of the drop wheel and reduce fluctuations, and at the same time can protect the structural strength of the welding strip.

[0013] Preferably, the slide grooves on both sides of the guide rail are connected, and the top of the slide groove is connected to the top of the guide rail. The top of the slide groove is open to facilitate placing the slider in the slide groove.

[0014] Preferably, an end cap is buckled on the top of the guide rail. The end cap can prevent the slider from falling out of the slide groove on the one hand, and can limit the top of the guide rail on the other hand, making the structure of the guide rail more stable.

[0015] Preferably, a U-shaped groove is formed at one end of the moving block away from the guide rail, and the drop wheel is placed in the U-shaped groove and is rotatably connected to the groove wall of the U-shaped groove.

[0016] Preferably, the moving block includes a first moving block and a second moving block, and the first moving block and the second moving block are connected.

[0017] Preferably, a groove is provided at one end of the first moving block connected to the second moving block, and two limit plates are slidably connected in the groove. The two limit plates are stacked and connected to the groove wall with a spring.

[0018] Preferably, an inclined surface is provided at one end of the limiting plate close to the notch, and the inclined surfaces of the two limiting plates are in a trumpet shape expanding toward the outside of the groove.

[0019] Preferably, a plug-in block is provided at one end of the second moving block close to the first moving block, and the plug-in block is plugged into the groove and placed between the two limit plates. After the plug-in block is inserted between the two limit plates, the spring will be compressed, and the elastic force of the spring will cause the limit plate to press the plug-in block, so that the connection between the first moving plate and the second moving plate is tighter.

[0020] Preferably, one end of the plug-in block close to the first moving block is pointed, and the pointed end of the plug-in block matches the trumpet shape formed by the two limit plates, so that it is convenient to insert the plug-in block into the groove.

[0021] Preferably, the outer circumferential surfaces of the guide wheel and the sinker wheel are in an arc shape that is concave inward. Such an arrangement can prevent the welding strip from falling off the surfaces of the guide wheel and the sinker wheel.

[0022] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses a tensioning and matching structure for supplying welding strips of a string welding machine for processing solar cells, and its beneficial effects are:

[0023] (1) In the utility model, the first moving block and the second moving block are connected, so that the two drop wheels can achieve synchronous up and down movement, which can greatly reduce the up and down movement amplitude of the drop wheels, reduce fluctuations, and protect the welding strip structure;

[0024] (2) After the first moving block is connected to the second moving block, the plug-in block can float slightly between the two limit plates, which can reduce the shear force on the plug-in block during the up and down movement of the drop wheel, making the structure after the first moving block and the second moving block are connected more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 The accompanying drawing is a structural schematic diagram of the tension fit structure provided by the utility model;

[0027] Figure 2 The accompanying drawing is an exploded top view of the guide rail and two moving blocks provided by the utility model;

[0028] Figure 3 The accompanying drawing is a schematic structural diagram of the first moving block and the second moving block provided by the utility model in a separated state;

[0029] Figure 4 The accompanying drawings are provided by the utility model Figure 3 Sectional view at AA in the middle;

[0030] Figure 5 The accompanying drawing is a structural schematic diagram of the connection state of the first moving block and the second moving block provided by the utility model;

[0031] Figure 6 The accompanying drawings are provided by the utility model Figure 5 Cross-sectional view at the middle BB.

[0032] Among them, in the figure,

[0033] 1- barrel; 2- welding belt; 3- guide wheel; 4- drop wheel;

[0034] 5-Move blocks;

[0035] 51-slider; 52-U-shaped groove; 53-first moving block; 54-second moving block; 55-groove; 56-limiting plate; 57-spring; 58-inclined surface; 59-plug-in block;

[0036] 6-Guide rail;

[0037] 61-chute;

[0038] 7- End cap. DETAILED DESCRIPTION

[0039] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The utility model discloses a tensioning and matching structure for supplying a welding ribbon of a string welding machine for processing solar cells, comprising:

[0041] A barrel 1, with a welding strip 2 wrapped around the surface of the barrel 1;

[0042] A guide wheel 3, wherein a plurality of guide wheels 3 are provided, and the welding strip 2 is wound around the surface of the guide wheel 3;

[0043] A drop wheel 4 is arranged between a plurality of guide wheels 3, and a welding belt 2 is wound around the surface of the drop wheel 4; the drop wheel 4 is rotatably connected to a moving block 5;

[0044] The guide rail 6 is provided with a drop wheel 4 on both sides of the guide rail 6. A slide groove 61 is provided on the side corresponding to the drop wheel 4. A slider 51 is provided at a position corresponding to the slide groove 61 of the moving block 5. The slider 51 is slidably connected in the slide groove 61. When the drop wheel 4 is installed on the guide rail 6, the first moving block 53 and the second moving block 54 are first connected together, and then the end cover 7 is opened, and the first moving block 53 and the second moving block 54 are placed in the guide rail 6, and the slider 51 is placed in the slide groove 61 accordingly. After the installation is completed, the end cover 7 is buckled.

[0045] In order to further optimize the above technical solution, the slide grooves 61 on both sides of the guide rail 6 are connected, and the top of the slide groove 61 is connected to the top of the guide rail 6 .

[0046] In order to further optimize the above technical solution, an end cover 7 is buckled on the top of the guide rail 6 .

[0047] In order to further optimize the above technical solution, a U-shaped groove 52 is provided at one end of the moving block 5 away from the guide rail 6, and the drop wheel 4 is placed in the U-shaped groove 52 and is rotatably connected to the groove wall of the U-shaped groove 52. The setting of the U-shaped groove 52 is convenient for connecting with the drop wheel 4 and does not affect the connection between the moving block 5 and the guide rail.

[0048] In order to further optimize the above technical solution, the moving block 5 includes a first moving block 53 and a second moving block 54, and the first moving block 53 and the second moving block 54 are connected.

[0049] In order to further optimize the above technical solution, a groove 55 is provided at one end where the first moving block 53 and the second moving block 54 are connected, and two limit plates 56 are slidably connected in the groove 55. The two limit plates 56 are stacked and arranged, and a spring 57 is connected between the two limit plates 56 and the groove wall of the groove 55. The limit plates 56 are placed in the groove 55 and are slidably connected to the groove wall, and the plug-in block 59 enters the groove 55 from the notch.

[0050] In order to further optimize the above technical solution, an inclined surface 58 is provided at one end of the limiting plate 56 close to the notch, and the inclined surfaces 58 of the two limiting plates 56 are in a trumpet shape expanding toward the outside of the groove 55 .

[0051] In order to further optimize the above technical solution, a plug-in block 59 is provided at one end of the second moving block 54 close to the first moving block 53, and the plug-in block 59 is plugged into the groove 55 and placed between the two limit plates 56. The plug-in block 59 is placed between the two limit plates 56. Since the drop wheel 54 floats up and down continuously, under the action of inertia, the plug-in block 59 can float up and down slightly between the two limit plates 56, reducing the shear force on the plug-in block 59 and extending the service life.

[0052] In order to further optimize the above technical solution, one end of the plug-in block 59 close to the first moving block 53 is pointed, and the pointed end of the plug-in block 59 matches the trumpet shape formed by the two limiting plates 56 .

[0053] In order to further optimize the above technical solution, the outer circumferential surfaces of the guide wheel 3 and the drop wheel 4 are in an arc shape that is concave inward.

[0054] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0055] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tensioning and fitting structure for supplying a welding ribbon of a stringer for processing solar cells, characterized in that: include: A barrel (1), wherein a welding strip (2) is wound around the surface of the barrel (1); A guide wheel (3), wherein a plurality of guide wheels (3) are provided, and the welding strip (2) is wound around the surface of the guide wheel (3); A drop wheel (4), the drop wheel (4) being arranged between the plurality of guide wheels (3), the welding belt (2) being wound around the surface of the drop wheel (4); the drop wheel (4) being rotatably connected to a moving block (5); A guide rail (6), both sides of the guide rail (6) are connected to a drop wheel (4), a slide groove (61) is provided on the side of the guide rail (6) corresponding to the drop wheel (4), a slider (51) is provided at a position of the moving block (5) corresponding to the slide groove (61), and the slider (51) is slidably connected in the slide groove (61).

2. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 1 is characterized in that: The slide grooves (61) on both sides of the guide rail (6) are connected, and the top of the slide groove (61) is connected to the top of the guide rail (6).

3. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 2 is characterized in that: An end cover (7) is buckled on the top of the guide rail (6).

4. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 1 is characterized in that: A U-shaped groove (52) is formed at one end of the moving block (5) away from the guide rail (6), and the drop wheel (4) is placed in the U-shaped groove (52) and is rotatably connected to the groove wall of the U-shaped groove (52).

5. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 4 is characterized in that: The moving block (5) comprises a first moving block (53) and a second moving block (54), and the first moving block (53) and the second moving block (54) are connected.

6. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 5, characterized in that: A groove (55) is provided at one end of the first moving block (53) connected to the second moving block (54), and two limit plates (56) are slidably connected in the groove (55). The two limit plates (56) are stacked and arranged, and a spring (57) is connected between the limit plates and the groove wall of the groove (55).

7. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 6 is characterized in that: An inclined surface (58) is provided at one end of the limiting plate (56) close to the notch, and the inclined surfaces (58) of the two limiting plates (56) are in a trumpet-shaped shape expanding toward the outside of the groove (55).

8. The tensioning and fitting structure for supplying welding ribbon of a stringer for processing solar cells according to claim 6 or 7, characterized in that: An inserting block (59) is provided at one end of the second moving block (54) close to the first moving block (53); the inserting block (59) is inserted into the groove (55) and is placed between the two limiting plates (56).

9. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 8, characterized in that: One end of the plug-in block (59) close to the first moving block (53) is pointed, and the pointed end of the plug-in block (59) matches the flared shape formed by the two limiting plates (56).

10. The tensioning and matching structure for supplying welding ribbon of a stringer for processing solar cells according to claim 1, characterized in that: The outer circumferential surfaces of the guide wheel (3) and the drop wheel (4) are in an arc shape that is concave inwards.

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