Improved welding strip flattening tool

Abstract

The utility model discloses an improved generation welding strip flattening tool, including support frame, the PLC controller of fixed connection in support frame, the fixed column of fixed connection in support frame, the top plate of fixed connection in fixed column. The utility model discloses through the cooperation of protection projection and electric push rod, strictly limit the maximum interval 0.08mm of upper pressure block and lower pressure block, solve traditional cylinder push " the problem of difficult control of flattening force", prevent the thickness of flattening too thick again, avoid overpressure and lead to welding strip copper wire mechanical damage, easy break when stretching, guarantee the mechanical strength of welding strip and the reliability of subsequent photovoltaic module connection, the arc -shaped groove of correction subassembly can ensure that welding strip is perpendicular to upper and lower pressure block, avoid traditional device " the problem of uneven flattening caused by welding strip inclination", the " buffer flattening area and core flattening area " design of upper pressure block and lower pressure block simultaneously, make welding strip stress even, further improve the flatness of flattening welding strip and size consistency, adapt the connection demand of photovoltaic small interval assembly.

Description

Technical Field

[0001] This utility model relates to the field of welding strip flattening tooling technology, specifically to an improved welding strip flattening tooling. Background Technology

[0002] With the rapid development of the photovoltaic industry, the conversion efficiency of photovoltaic modules has continued to improve. Among the key methods to enhance conversion efficiency, reducing cell spacing and string length to compress module area and thus increase conversion efficiency per unit area has become crucial. Currently, small-pitch modules with cell spacing less than 1mm are gaining market favor. In photovoltaic modules, cells are primarily connected using solder ribbons (also known as tinned copper ribbons; with the advent of dense-grid cells, this has changed to tinned copper wires).

[0003] Existing technology uses a flattening cylinder of a welding machine to push a flattening mechanism module to flatten the welding strip. The flattening module is divided into upper and lower parts. When the welding strip is stretched through the flattening mechanism, the upper module is pushed by the cylinder to press the welding strip to the lower module, flattening the welding strip at the connection between the battery cells.

[0004] In actual production, the thickness of the weld strip at the flattening position is a key control indicator. However, existing technical solutions have significant difficulties in adjusting the thickness of the weld strip during flattening. The flattening action is rapid and forceful, completed within 0.5 seconds. If the flattening force is too small, the flattening thickness will be too large and unqualified. If the flattening force is too large, the flattening limit will be reached, making it difficult to accurately control the flattening thickness. At the same time, the weld strip is mainly provided with mechanical strength by copper wire. Although copper wire has a certain degree of metal ductility and plasticity, if the extrusion force is too large during extrusion, it will lead to excessive material stress and excessive metal deformation, causing mechanical damage to the copper wire. During the stretching process of the solder strip, it is easily broken due to the flattening operation. In actual production, the breakage of the solder strip is quite common. After the solder strip breaks, the machine needs to be stopped and the solder strip needs to be reconnected, which seriously affects the production efficiency. Secondly, the existing technology usually places the round wire directly on the device for flattening. If the solder strip is not perpendicular to the device, the copper wire will bend, twist and other deformations during the flattening process, which cannot be corrected. This will result in an irregular shape and uneven thickness of the flattened solder strip. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide an improved welding strip flattening fixture. By cooperating with the protective protrusion and the electric push rod, the maximum distance between the upper and lower pressure blocks is strictly limited to 0.08mm, solving the problem of "difficulty in controlling the flattening force" in traditional cylinder-driven applications. This prevents excessive flattening thickness and avoids mechanical damage to the copper wires of the welding strip caused by overpressure, which can easily lead to breakage during stretching, thus ensuring the mechanical strength of the welding strip and the reliability of subsequent photovoltaic module connections. The arc groove for correcting the module ensures that the welding strip is perpendicular to the upper and lower pressure blocks, avoiding the problem of "uneven flattening caused by welding strip tilting" in traditional devices. At the same time, the "buffer flattening area + core flattening area" design of the upper and lower pressure blocks ensures uniform force on the welding strip, further improving the flatness and dimensional consistency of the flattened welding strip, and adapting to the connection requirements of small-pitch photovoltaic modules.

[0006] The purpose of this utility model is achieved by the following technical solution: an improved welding strip flattening fixture, including a support frame, a PLC controller fixedly connected to the support frame, a fixed column fixedly connected to the support frame, a top plate fixedly connected to the fixed column, a drive assembly mounted on the top plate, an upper module assembly mounted on the output end of the drive assembly, a lower module assembly mounted on one end of the support frame, welding strip mounted on the lower module assembly, and a correction assembly mounted on the other end of the support frame. The driving component is used to drive the upper module component to move closer to or further away from the lower module component, so that the upper module component cooperates with the lower module component to flatten the solder strips of the alignment component.

[0007] In one optional embodiment, the drive assembly includes an electric push rod fixedly connected to the top plate, a coupling fixedly connected to the output end of the electric push rod, and a sliding plate fixedly connected to the coupling. The electric push rod is used to push the upper module assembly to move closer to or further away from the lower module assembly in a vertical direction.

[0008] In one optional embodiment, the upper module assembly includes an upper template fixedly connected to a sliding plate, upper pressure blocks fixedly connected to the upper template in a linear array, and a plurality of limiting rods fixedly connected to the support frame in a circumferential array. The upper template has through holes, and the upper template is slidably connected to the limiting rods through the through holes.

[0009] In one optional embodiment, the lower module assembly includes a lower template fixedly connected to one end of the support frame, a plurality of pressing blocks linearly arranged and fixedly connected to the lower template, and protective protrusions symmetrically arranged and fixedly connected to the pressing blocks.

[0010] In one optional embodiment, both the upper and lower pressing blocks are provided with a core flattening area, and the core flattening area is 6mm in size. A 2mm buffer flattening area is provided on each side of the core flattening area, and the total flattening area is 10mm.

[0011] In one optional embodiment, the height of the protective protrusion is 0.08 mm. When the electric push rod moves and the upper template moves closer to the lower template, the upper pressure block flattens the welding strip on the lower pressure block until the upper pressure block contacts the protective protrusion on the lower pressure block and stops.

[0012] In one optional embodiment, the correction component includes a sliding rod fixedly connected to the other end of the support frame, a plurality of moving blocks slidably connected to the sliding rod, an adjusting block fixedly connected to the moving blocks, and a limiting component installed on the moving blocks. The limiting component is used to limit the position of the moving blocks on the sliding rod, and the adjusting block is linearly provided with an arc-shaped groove.

[0013] In one optional embodiment, the limiting component includes a spring fixedly connected to the moving block and a limiting bead slidably connected to the moving block. The limiting bead is fixedly connected to the spring, and the sliding rod has linearly arranged limiting grooves. When the limiting bead disengages from the limiting groove of the sliding rod, the moving block moves freely on the sliding rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By protecting the protrusion and cooperating with the electric push rod, the maximum distance between the upper and lower pressure blocks is strictly limited to 0.08mm, which solves the problem of "difficulty in controlling the flattening force" of traditional cylinder push. This not only prevents the flattening thickness from being too thick, but also avoids mechanical damage to the copper wire of the solder strip caused by excessive pressure, and easy breakage during stretching, thus ensuring the mechanical strength of the solder strip and the reliability of the subsequent photovoltaic module connection.

[0015] 2. The arc groove of the correction component can ensure that the solder strip is perpendicular to the upper and lower pressure blocks, avoiding the problem of "uneven flattening caused by solder strip tilting" in traditional devices; at the same time, the "buffer flattening area and core flattening area" design of the upper and lower pressure blocks makes the solder strip evenly stressed, further improving the flatness and dimensional consistency of the solder strip after flattening, and adapting to the connection requirements of photovoltaic small-pitch modules. Attached Figure Description

[0016] Figure 1 A perspective view of an improved welding strip flattening tool; Figure 2 This is a perspective view of an improved welding strip flattening tool from another angle. Figure 3 This is a structural diagram of the above module components; Figure 4 This is a structural diagram of the following module components; Figure 5 This is a schematic diagram of the flattened structure of the solder strip; Figure 6 This is a structural diagram of the upper pressure block, lower pressure block, and protective protrusion. Figure 7 A schematic diagram of the structure of the calibration component; Figure 8A schematic diagram of a local structure of the correction component; Figure 9 This is a schematic diagram of the core flattened region.

[0017] In the diagram: 1. Support frame; 21. Fixed column; 22. Top plate; 23. Electric push rod; 24. Sliding plate; 25. Limiting rod; 26. Upper template; 27. Upper pressure block; 28. Lower template; 29. ​​Lower pressure block; 210. Protective protrusion; 211. Welding strip; 212. Coupling; 31. Sliding rod; 32. Moving block; 33. Spring; 34. Limiting bead; 35. Adjusting block; 4. PLC controller. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, the internal connection of two elements, or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0022] Please refer to Figure 1-9 An improved welding strip flattening fixture includes a support frame 1, a PLC controller 4 fixedly connected to the support frame 1, a fixing column 21 fixedly connected to the support frame 1, a top plate 22 fixedly connected to the fixing column 21, a drive assembly mounted on the top plate 22, an upper module assembly mounted on the output end of the drive assembly, a lower module assembly mounted on one end of the support frame 1, welding strip 211 mounted on the lower module assembly, and a correction assembly mounted on the other end of the support frame 1. The drive assembly is used to drive the upper module assembly to move closer to or further away from the lower module assembly, so that the upper module assembly cooperates with the lower module assembly to flatten the welding strip 211 aligned and corrected by the correction assembly. The PLC controller 4 precisely controls the action of the drive assembly, and the welding strip 211 is flattened after being aligned neatly with the correction assembly, which improves the accuracy and stability of the flattening operation.

[0023] In a preferred embodiment of this utility model, the drive assembly includes an electric push rod 23 fixedly connected to the top plate 22, a coupling 212 fixedly connected to the output end of the electric push rod 23, and a sliding plate 24 fixedly connected to the coupling 212. The electric push rod 23 is used to push the upper module assembly to move closer to or further away from the lower module assembly in a vertical direction. The electric push rod 23 provides stable power and accurately drives the upper module assembly to move through the coupling 212 and the sliding plate 24, ensuring the smoothness and reliability of the flattening action.

[0024] In a preferred embodiment of this utility model, the upper module assembly includes an upper template 26 fixedly connected to the sliding plate 24, upper pressing blocks 27 linearly arrayed and fixedly connected to the upper template 26, and a plurality of limiting rods 25 circumferentially arrayed and fixedly connected to the support frame 1. The upper template 26 has through holes, and the upper template 26 is slidably connected to the limiting rods 25 through the through holes. The upper template 26 slides on the limiting rods 25 through the through holes, ensuring the linearity of the movement of the upper module assembly. The linear array design of the upper pressing blocks 27 ensures the uniformity of flattening.

[0025] In a preferred embodiment of this utility model, the lower module assembly includes a lower template 28 fixedly connected to one end of the support frame 1, a plurality of lower pressing blocks 29 linearly arranged and fixedly connected to the lower template 28, and protective protrusions 210 symmetrically arranged and fixedly connected to the lower pressing blocks 29. The lower pressing blocks 29 are linearly arranged and cooperate with the upper pressing block 27 to achieve uniform flattening. The protective protrusions 210 prevent the upper pressing block 27 from excessively squeezing the welding strip 211 and reduce mechanical damage to the welding strip.

[0026] In a preferred embodiment of this utility model, both the upper pressing block 27 and the lower pressing block 29 are provided with a core flattening area, and the core flattening area is 6mm in size. A buffer flattening area of ​​2mm is provided on each side of the core flattening area, and the total flattening area is 10mm. The clear setting of the core flattening area and the buffer flattening area can accurately control the flattening thickness of the welding strip, avoid unqualified flattening or reaching the flattening limit, and improve product quality.

[0027] In a preferred embodiment of this utility model, the height of the protective protrusion 210 is 0.08mm. When the electric push rod 23 moves and the upper template 26 approaches the lower template 28, the upper pressure block 27 flattens the welding strip 211 on the lower pressure block 29 until the upper pressure block 27 contacts the protective protrusion 210 on the lower pressure block 29 and stops. The 0.08mm high protective protrusion 210 precisely limits the degree of flattening, prevents excessive compression from causing mechanical damage to the welding strip, reduces the probability of welding strip breakage, and improves production efficiency.

[0028] Please refer to Figure 7-9 In a preferred embodiment of this utility model, the correction component includes a sliding rod 31 fixedly connected to the other end of the support frame 1, a plurality of moving blocks 32 slidably connected to the sliding rod 31, an adjusting block 35 fixedly connected to the moving blocks 32, and a limiting component installed on the moving blocks 32. The limiting component is used to limit the position of the moving blocks 32 on the sliding rod 31. The adjusting block 35 has an arc-shaped groove linearly opened on it. By moving the moving blocks 32 on the sliding rod 31, the position of the welding strip 211 can be easily adjusted by using the arc-shaped groove of the adjusting block 35. The limiting component ensures that the welding strip is neatly arranged, providing a guarantee for precise flattening.

[0029] In a preferred embodiment of this utility model, the limiting component includes a spring 33 fixedly connected to the moving block 32 and a limiting bead 34 slidably connected to the moving block 32. The limiting bead 34 is fixedly connected to the spring 33. The sliding rod 31 has linearly arranged limiting grooves. When the limiting bead 34 disengages from the limiting groove of the sliding rod 31, the moving block 32 moves freely on the sliding rod 31. The spring 33 and the limiting bead 34, in conjunction with the limiting groove on the sliding rod 31, can flexibly limit the position of the moving block 32, making it convenient to adjust the position of the welding strip 211 and ensuring the stability of the arrangement.

[0030] During operation, the welding strip flattening parameters, such as the downward speed of the electric push rod 23 and the flattening dwell time, are set by the PLC controller 4 on the support frame 1. First, the welding strip 211 is corrected: press the limit bead 34 on the moving block 32 of the correction component, compress the spring 33 to make the limit bead 34 disengage from the limit groove of the sliding rod 31, push the moving block 32 to slide along the sliding rod 31, and adjust the position of the adjusting block 35; put the welding strip 211 into the arc groove of the adjusting block 35, and the arc groove guides and corrects the welding strip 211 to ensure that the welding strip 211 is perpendicular to the lower module component; after the adjustment is completed, release the limit bead 34, and the spring 33 pushes the limit bead 34 into the limit groove of the sliding rod 31 to fix the position of the moving block 32.

[0031] Place one end of the corrected welding strip 211 on the lower pressure block 29 of the lower module assembly, and start the drive assembly: the electric push rod 23 drives the coupling 212 at the output end to move downward, the coupling 212 drives the sliding plate 24 to move downward synchronously, and the sliding plate 24 drives the upper template 26 of the upper module assembly to slide vertically along the limit rod 25 on the support frame 1 to prevent the upper template 26 from shifting.

[0032] When the upper pressure block 27 on the upper template 26 approaches the lower pressure block 29 on the lower template 28, the upper pressure block 27 and the lower pressure block 29 cooperate to flatten the welding strip 211. First, the welding strip 211 is pre-pressed through the 2mm buffer flattening area on both sides, and then the core flattening area of ​​6mm in the middle is used to achieve precise flattening. Until the upper pressure block 27 contacts the protective protrusion 210 on the lower pressure block 29 at a height of 0.08mm, the electric push rod 23 stops moving to avoid excessive compression of the welding strip 211.

[0033] After flattening, the electric push rod 23 is controlled to move in the opposite direction by the PLC controller 4, which drives the upper template 26 and the upper pressure block 27 to reset upwards, and the flattened welding strip 211 is taken out. If continuous processing is required, the above correction and flattening steps can be repeated.

[0034] Although only certain components and embodiments of this application have been illustrated and described, many modifications and alterations will be apparent to those skilled in the art without actually departing from the scope and spirit of the claims, such as variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.

[0035] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An improved welding strip flattening tool, characterized in that: Includes a support frame (1), a PLC controller (4) fixedly connected to the support frame (1), a fixed column (21) fixedly connected to the support frame (1), a top plate (22) fixedly connected to the fixed column (21), a drive assembly mounted on the top plate (22), an upper module assembly mounted on the output end of the drive assembly, a lower module assembly mounted on one end of the support frame (1), a welding strip (211) mounted on the lower module assembly, and a correction assembly mounted on the other end of the support frame (1); The driving component is used to drive the upper module component to move closer to or further away from the lower module component, so that the upper module component cooperates with the lower module component to flatten the solder strip (211) of the alignment component; The height of the protective protrusion (210) is 0.08mm. When the electric push rod (23) moves and the upper template (26) approaches the lower template (28), the upper pressure block (27) flattens the welding strip (211) on the lower pressure block (29) until the upper pressure block (27) contacts the protective protrusion (210) on the lower pressure block (29) and stops.

2. The improved solder strip flattening tooling of claim 1, wherein, The drive assembly includes an electric push rod (23) fixedly connected to the top plate (22), a coupling (212) fixedly connected to the output end of the electric push rod (23), and a sliding plate (24) fixedly connected to the coupling (212). The electric push rod (23) is used to push the upper module assembly to move closer to or further away from the lower module assembly in the vertical direction.

3. The improved welding strip flattening tool according to claim 2, characterized in that, The upper module component includes an upper template (26) fixedly connected to the sliding plate (24), an upper pressure block (27) fixedly connected to the upper template (26) in a linear array, and several limiting rods (25) fixedly connected to the support frame (1) in a circular array. The upper template (26) has through holes, and the upper template (26) is slidably connected to the limiting rods (25) through the through holes.

4. The improved welding strip flattening tool according to claim 3, characterized in that, The lower module assembly includes a lower template (28) fixedly connected to one end of the support frame (1), a number of lower pressure blocks (29) fixedly connected to the lower template (28) and arranged linearly, and protective protrusions (210) fixedly connected to the lower pressure blocks (29) and symmetrically arranged.

5. An improved welding strip flattening tool according to claim 4, characterized in that, Both the upper pressure block (27) and the lower pressure block (29) are provided with a core flattening area, and the core flattening area is 6mm. A 2mm buffer flattening area is provided on each side of the core flattening area, and the total flattening area is 10mm.

6. The improved welding strip flattening tool according to claim 1, characterized in that, The correction assembly includes a sliding rod (31) fixedly connected to the other end of the support frame (1), several moving blocks (32) slidably connected to the sliding rod (31), an adjusting block (35) fixedly connected to the moving block (32), and a limiting assembly installed on the moving block (32). The limiting assembly is used to limit the position of the moving block (32) on the sliding rod (31), and the adjusting block (35) has an arc groove linearly opened on it.

7. An improved welding strip flattening tool according to claim 6, characterized in that, The limiting component includes a spring (33) fixedly connected to the moving block (32) and a limiting bead (34) slidably connected to the moving block (32). The limiting bead (34) is fixedly connected to the spring (33). The sliding rod (31) has linearly arranged limiting grooves. When the limiting bead (34) disengages from the limiting groove of the sliding rod (31), the moving block (32) moves freely on the sliding rod (31).

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