A solder strip stretching device

Abstract

The utility model discloses a kind of welding strip stretching devices, including guide seat and multiple clamping structures, multiple clamping structures are evenly spaced clamped on welding strip, and multiple clamping structures are all slidably connected with guide seat;Multiple clamping structures are suitable for moving in the same direction under external force, and the distance of each clamping structure relative to guide seat is an arithmetic sequence.The tolerance between the adjacent two numbers in the arithmetic sequence is a constant value, that is, the distance of each clamping structure is a constant value, because multiple clamping structures are evenly spaced distributed on welding strip, so the stretching of each part on welding strip is the same, thereby realizing the uniform stretching of each part of welding strip.

Description

Technical Field

[0001] This utility model relates to the technical field of welding strip production equipment, and specifically to a welding strip stretching device. Background Technology

[0002] The key component of photovoltaic power generation technology is the solar photovoltaic cell, and the most important process in the production of solar photovoltaic cells is the stringing of solar cells, which involves welding solar cells into a string using welding strips. Before stringing, the welding strips need to be stretched according to a certain ratio to induce plastic deformation and straighten them, thereby improving the quality of the welded cell strings. Existing welding strip stretching devices use a cylinder-driven pressure block to press down one end of the welding strip, with a nut fixedly connected to the other end of the welding strip and slidably connected to a slide rail. A motor drives a lead screw to rotate, which in turn moves the nut along the slide rail, thus stretching the welding strip.

[0003] However, the aforementioned welding strip stretching device stretches the welding strip by fixing both ends. When the welding strip is stretched in this way, the tensile stress on each part of the welding strip is different, resulting in uneven stretching of each part. The uneven welding strip leads to an increase in resistance. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that when the welding strip is stretched in this way in the prior art, the tensile stress on each part of the welding strip is different, which leads to uneven stretching of each part. The uneven welding strip leads to an increase in resistance value.

[0005] Therefore, this utility model provides a welding strip stretching device, comprising: a guide seat; a plurality of clamping structures, wherein the plurality of clamping structures are evenly spaced and clamped on the welding strip, and the plurality of clamping structures are slidably connected to the guide seat; the plurality of clamping structures are adapted to move in the same direction under the action of external force, and the distance that each clamping structure moves relative to the guide seat is an arithmetic sequence.

[0006] Optionally, the guide seat includes a first guide rod and a second guide rod spaced apart therefrom, and any one of the clamping structures is slidably connected to the first guide rod and the second guide rod.

[0007] Optionally, any of the clamping structures includes: a first connecting rod having a first connecting portion and a second connecting portion, the first connecting portion being slidably connected to the first guide rod; a second connecting rod intersecting the first connecting rod, the second connecting rod having a third connecting portion and a fourth connecting portion, the third connecting portion being slidably connected to the second guide rod; the distance between the first guide rod and the second guide rod is changed so that the second connecting portion and the fourth connecting portion move closer to or further away from each other, and so that the second connecting portion and the fourth connecting portion clamp or loosen the welding strip.

[0008] Optionally, the welding strip stretching device further includes a clamping drive component. The mounting end of the clamping drive component is fixedly connected to the first guide rod, and the driving end of the clamping drive component is fixedly connected to the second guide rod. The clamping drive component can drive the second guide rod away from or closer to the first guide rod, so that the fourth connecting part is closer to or farther from the second connecting part, thereby clamping or releasing the welding strip.

[0009] Optionally, any clamping structure includes a first tension drive member, the mounting end of the first tension drive member being adapted to be fixedly connected to the first guide rod, and the first connecting rod having a fifth connecting portion, the fifth connecting portion being fixedly connected to the driving end of the first tension drive member.

[0010] Optionally, the above-mentioned welding strip stretching device further includes: a mounting bracket; a lifting platform slidably connected to the mounting bracket, the lifting platform having multiple grooves; multiple sliders, any one of the sliders being slidably connected to the corresponding groove; the first connecting rod having a sixth connecting portion, the sixth connecting portion being hinged to the corresponding slider; the lifting platform moving away from the mounting bracket, so that the multiple sixth connecting portions move axially along the first guide rod.

[0011] Optionally, the angles between the plurality of sliding grooves and the horizontal plane decrease sequentially along the direction of movement of each of the clamping structures, and the sine values ​​of the angles between the plurality of sliding grooves and the horizontal plane are arithmetic sequences.

[0012] Optionally, the above-mentioned welding strip stretching device further includes a slide rail, which is disposed between the lifting platform and the mounting bracket.

[0013] Optionally, the above-mentioned strip stretching device further includes a second stretching drive, the drive end of the second stretching drive being fixedly connected to the mounting bracket, and the drive end of the second stretching drive being fixedly connected to the lifting platform.

[0014] The technical solution provided by this utility model has the following advantages:

[0015] 1. The welding strip stretching device provided by this utility model includes a guide seat and multiple clamping structures. The multiple clamping structures are evenly spaced and clamped onto the welding strip, and each clamping structure is slidably connected to the guide seat. The multiple clamping structures are adapted to move in the same direction under external force, and the distance each clamping structure moves relative to the guide seat forms an arithmetic sequence. The common difference between any two adjacent numbers in the arithmetic sequence is a constant value, meaning the stretching distance of each clamping structure is a constant value. Because multiple clamping structures are evenly spaced on the welding strip, the stretching of each part of the welding strip is the same, thereby achieving uniform stretching of all parts of the welding strip.

[0016] 2. The welding strip stretching device provided by this utility model can make all clamping structures clamp the welding strip by changing the distance between the first guide rod and the second guide rod, thus avoiding the use of multiple clamping drive components and improving the compactness of the entire device.

[0017] 3. The welding strip stretching device provided by this utility model reduces the resistance value of the welding strip and increases the current passing through the welding strip because each part of the welding strip is stretched evenly, thereby increasing the power of the battery string welded by the welding strip. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the welding strip stretching device provided by this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the welding strip stretching device from another perspective;

[0021] Figure 3 for Figure 1 A schematic diagram showing the moving distance of each clamping structure.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Guide seat; 11-First guide rod; 12-Second guide rod; 21-Clamping structure; 211-First connecting rod; 212-Second connecting rod; 22-Clamping drive component; 23-Mounting bracket; 24-Lifting platform; 241-Slide groove; 25-Slider; 26-Slide rail; 27-Second tension drive component; 3-Welding strip. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] This embodiment provides a welding strip stretching device, such as... Figures 1 to 3 As shown, it includes a guide seat 1 and multiple clamping structures 21. The multiple clamping structures 21 are evenly spaced and clamped on the welding strip 3, and all of the multiple clamping structures 21 are slidably connected to the guide seat 1. The multiple clamping structures 21 are adapted to move in the same direction under the action of external force, and the distance that each clamping structure 21 moves relative to the guide seat 1 is an arithmetic sequence.

[0030] The welding strip stretching device provided in this embodiment has a fixed difference between two adjacent numbers in an arithmetic sequence, that is, the stretching distance of each clamping structure 21 is a fixed value. Since multiple clamping structures 21 are evenly distributed on the welding strip 3, the stretching of each part on the welding strip 3 is the same, thereby achieving uniform stretching of each part of the welding strip 3.

[0031] like Figure 1 and Figure 2As shown, the welding strip stretching device provided in this embodiment includes a guide seat 1 comprising a first guide rod 11 and a second guide rod 12. The first guide rod 11 and the second guide rod 12 are spaced apart. Both the first guide rod 11 and the second guide rod 12 are cylindrical rods. Both ends of the first guide rod 11 are fixedly connected to the wall of the factory building by bolts. Both ends of the second guide rod 12 extend into the sliding groove of the factory building wall, and the second guide rod 12 can move along the extension direction of the sliding groove.

[0032] like Figure 1 and Figure 2 As shown, the welding strip stretching device provided in this embodiment also includes two clamping drive members 22, and four clamping structures 21 are evenly distributed on the welding strip 3. As an alternative implementation, those skilled in the art can adjust the number of clamping structures 21 as needed, and the number of clamping structures 21 is greater than or equal to three; each clamping structure 21 includes a first connecting rod 211 and a second connecting rod 212, the first connecting rod 211 and the second connecting rod 212 are arranged crosswise, the shape of the second connecting rod 212 is a horizontally mirrored S-shape, the first connecting rod 211 is integrally formed by the S-shaped rod and the vertical rod, and the first connecting rod 211 has a first connecting part and a second connecting part, so as to Figure 1 Taking the first connecting part as an example, the first connecting part is a round hole, which is sleeved on the first guide rod 11 and can move along the axial direction of the first guide rod 11; the second connecting part is the upper arc-shaped part of the first connecting rod 211, which is used to clamp the welding strip 3; the second connecting rod 212 has a third connecting part and a fourth connecting part. The third connecting part is also a round hole, which is sleeved on the second guide rod 12. The third connecting part can move along the axial direction of the second guide rod 12. The first connecting part is aligned with the second connecting part. The fourth connecting part is the upper arc-shaped part of the second connecting rod 212, which is used to cooperate with the second connecting part to clamp the welding strip 3. Both clamping drive components 22 are piston cylinders. The mounting end of one clamping drive component 22 is welded and fixed to one end of the first guide rod 11, and the driving end of the clamping drive component 22 is welded and fixed to one end of the second guide rod 12. The mounting end of the other clamping drive component 22 is welded and fixed to the other end of the first guide rod 11, and the driving end of the other clamping drive component 22 is welded and fixed to the other end of the second guide rod 12. The two clamping components work simultaneously, thereby causing the second guide rod 12 to move away from or closer to the first guide rod 11, and causing the fourth connecting part to move closer to or away from the second connecting part, so as to clamp or loosen the welding strip 3.

[0033] like Figure 1 and Figure 2 As shown, the welding strip stretching device provided in this embodiment also includes a mounting bracket 23, a lifting platform 24, four sliders 25, four slide grooves 241, two slide rails 26, and two second stretching drive components 27. The mounting bracket 23 consists of a base plate and two support columns. Two support columns are spaced apart on the top of the base plate to... Figure 1Taking the perspective of the two pillars as an example, each pillar has a slide rail 26 on its upper part, and the two slide rails 26 are arranged opposite to each other. The two ends of the lifting platform 24 are slidably connected to the two slide rails 26 respectively. The lifting platform 24 is U-shaped, and two mounting plates are symmetrically arranged on the front and rear sides of the lifting platform 24. Each mounting plate has four symmetrically opened slide grooves 241. The four angles between the four slide grooves 241 on the same mounting plate and the horizontal plane decrease sequentially along the direction of movement of the clamping structure 21, and the sine values ​​of the four angles between the four slide grooves 241 on the same mounting plate and the horizontal plane are arithmetic sequences. Four sliders 25 are located between the two mounting plates, and the two ends of any slider 25 are slidably connected to the corresponding two symmetrical slide grooves 241. The slider 25 is a round rod. The first connecting rod 211 of any clamping structure 21 has a sixth connecting part, which is a round hole. The round hole is fitted around the outer periphery of the slider 25 and is located between the two mounting plates. Both second tension drive components 27 are piston cylinders. The two second tension drive components 27 are spaced apart on the top of the base plate. The drive ends of the two second tension drive components 27 are welded and fixed to the bottom of the lifting platform 24. The two second tension drive components 27 can drive the lifting platform 24 to move up and down along the direction of gravity.

[0034] In an alternative embodiment, any clamping structure 21 includes a first tension drive member, the mounting end of which is fixedly connected to the first guide rod 11. The first connecting rod 211 in the clamping structure 21 has a fifth connecting part, which is the intersection of the first connecting rod and the second connecting rod. The fifth connecting part is welded and fixed to the driving end of the first tension drive member, which is a piston cylinder.

[0035] The welding strip stretching device provided in this embodiment can include the following steps in its operation: First, the two clamping drive members 22 work simultaneously, causing the second guide rod 12 to move away from the first guide rod 11 and the third connecting part to move away from the first connecting part, so that the fourth connecting part moves closer to the second connecting part and clamps the welding strip 3; then, the two second stretching drive members 27 work simultaneously, the lifting platform 24 moves along the slide rail 26 and moves away from the mounting bracket 23, that is, the lifting platform 24 rises, and all eight slide grooves 241 rise synchronously, so that the four sliders 25 slide along the slide grooves 241 and drive the four sixth connecting parts to move. Each sixth connecting part slides along the path of the corresponding slide groove 241, so that the corresponding clamping structure 21 moves along the first guide rod 11, such as Figure 3 As shown, since the angles between each slide 241 and the horizontal plane are different, the distances that the four clamping structures 21 move are L4, L3, L2, and L1 respectively, where L4 is 0 mm, L3 is 1 mm, L2 is 2 mm, and L3 is 3 mm. This makes the length of the welding strip 3 stretched by each clamping structure 21 a constant value, i.e., 1 mm, so that each part of the welding strip 3 is stretched evenly.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A welding strip stretching device, characterized in that, include: Guide seat (1); Multiple clamping structures (21) are evenly spaced on the welding strip (3), and all of the multiple clamping structures (21) are slidably connected to the guide seat (1); The plurality of clamping structures (21) are adapted to move in the same direction under the action of external force, and the distances that each clamping structure (21) moves relative to the guide seat (1) are in an arithmetic sequence.

2. The welding strip stretching device according to claim 1, characterized in that, The guide seat (1) includes a first guide rod (11) and a second guide rod (12) spaced apart therefrom, and any one of the clamping structures (21) is slidably connected to the first guide rod (11) and the second guide rod (12).

3. The welding strip stretching device according to claim 2, characterized in that, Each of the clamping structures (21) includes: The first link (211) has a first connecting part and a second connecting part, and the first connecting part is slidably connected to the first guide rod (11); A second link (212) is arranged intersecting the first link (211), the second link (212) having a third connecting part and a fourth connecting part, the third connecting part being slidably connected to the second guide rod (12); The distance between the first guide rod (11) and the second guide rod (12) is changed so that the second connecting part and the fourth connecting part move closer or further apart from each other, and the second connecting part and the fourth connecting part clamp or loosen the welding strip (3).

4. The welding strip stretching device according to claim 3, characterized in that, Also includes: A clamping drive (22) is provided, the mounting end of which is fixedly connected to the first guide rod (11), and the driving end of which is fixedly connected to the second guide rod (12). The clamping drive (22) can drive the second guide rod (12) away from or closer to the first guide rod (11), so that the fourth connecting part is closer to or further away from the second connecting part, thereby clamping or releasing the welding strip (3).

5. The welding strip stretching device according to claim 4, characterized in that, Each clamping structure (21) includes a first tension drive member, the mounting end of which is adapted to be fixedly connected to the first guide rod (11), and the first connecting rod (211) has a fifth connecting part, which is fixedly connected to the driving end of the first tension drive member.

6. The welding strip stretching device according to claim 4, characterized in that, Also includes: Mounting bracket (23); A lifting platform (24) is slidably connected to the mounting bracket (23), and the lifting platform (24) has multiple sliding grooves (241); Multiple sliders (25), any one of the sliders (25) is slidably connected to the corresponding groove (241); The first connecting rod (211) has a sixth connecting part, which is hinged to the corresponding slider (25); The lifting platform (24) moves away from the mounting bracket (23) so that the plurality of sixth connecting parts move axially along the first guide rod (11).

7. The welding strip stretching device according to claim 6, characterized in that, The angles between the plurality of sliding grooves (241) and the horizontal plane decrease sequentially along the direction of movement of the respective clamping structures (21), and the sine values ​​of the angles between the plurality of sliding grooves (241) and the horizontal plane are arithmetic sequences.

8. The welding strip stretching device according to claim 7, characterized in that, Also includes: A slide rail (26) is disposed between the lifting platform (24) and the mounting bracket (23).

9. The welding strip stretching device according to claim 8, characterized in that, Also includes: The second tension drive (27) is fixedly connected to the mounting bracket (23) at its drive end and to the lifting platform (24).

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