Solder strip flattening device

Abstract

The utility model relates to a welding strip flattening device. The welding strip flattening device comprises a supporting assembly, a flattening assembly and a driving assembly. A flattening station is arranged on the supporting assembly; the flattening assembly is movably arranged on the supporting assembly and is opposite to the flattening station; the driving assembly comprises an air cylinder and a connecting rod, the piston end of the air cylinder is rotationally connected with the first end of the connecting rod, and the fixed end of the air cylinder and the second end of the connecting rod are rotationally connected to the supporting assembly. The air cylinder is configured to be capable of driving the connecting rod to move so that the flattening assembly can abut against the flattening station in a reciprocating mode. The welding strip flattening device provided by the utility model is long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and more specifically, to a welding strip flattening device. Background Art

[0002] The common structure of existing weld strip flattening devices is: a cylinder fixed to a base, with a movable joint at the top of the cylinder piston rod. The other end of the movable joint is mounted in a waist-shaped hole in the connecting rod. By sliding in the waist-shaped hole, the cylinder's linear motion is converted into rotation of the connecting rod, and then into linear motion of the flattening head, achieving the purpose of flattening the weld strip. However, this structure bears radial force on the piston rod. Long-term operation under this condition will easily wear the cylinder body and sealing components, shortening the cylinder's service life. Utility Model Content

[0003] One object of the present invention is to provide a welding ribbon flattening device to at least solve one of the problems in the background technology.

[0004] According to one aspect of the present invention, a welding ribbon flattening device is provided, comprising:

[0005] A support assembly, wherein the support assembly is provided with a flattening station;

[0006] a flattening assembly, the flattening assembly being movably disposed on the supporting assembly and opposite to the flattening station;

[0007] A drive assembly, the drive assembly comprising a cylinder and a connecting rod, wherein a piston end of the cylinder is rotatably connected to a first end of the connecting rod, and a fixed end of the cylinder and a second end of the connecting rod are rotatably connected to the support assembly respectively;

[0008] The cylinder is configured to drive the connecting rod to move, so that the flattening assembly is pressed against the flattening station reciprocatingly.

[0009] Optionally, the fixed end is rotatably connected to the support assembly via a first rotating shaft, and the piston end is rotatably connected to the connecting rod via a second rotating shaft;

[0010] The flattening assembly is movably disposed on the supporting assembly along a first direction. In the first direction, the height of the first rotating shaft is higher than the height of the second rotating shaft.

[0011] Optionally, the drive assembly further includes a movable joint, a first end of the movable joint being fixedly connected to the piston end via a thread, and a second end of the movable joint being rotationally connected to the first end of the connecting rod via the second rotating shaft.

[0012] Optionally, when the flattening assembly is pressed against the flattening station, the angle between the cylinder and the connecting rod is a right angle.

[0013] Optionally, the welding strip flattening device further includes a connecting block and a pressing block, wherein the pressing block is fixed to the second end of the connecting rod through the connecting block and is in line contact with the flattening assembly.

[0014] Optionally, the cylinder has an initial position and a flattened position;

[0015] When the cylinder is located at the initial position, the cylinder is in a retracted state, and the flattening assembly is separated from the flattening station;

[0016] When the cylinder is located at the flattening position, the cylinder is in an extended state, and the flattening assembly is pressed against the flattening station.

[0017] Optionally, the flattening assembly includes a connecting shaft, an upper flattening head and an elastic member;

[0018] The connecting shaft is movably assembled on the supporting assembly through the elastic member, the first end of the connecting shaft contacts the second end of the connecting rod, and the upper flattening head is fixed on the second end of the connecting shaft and is opposite to the flattening station;

[0019] When the cylinder is located at the initial position, the elastic member can enable the connecting shaft to drive the upper flattening head to leave the flattening station.

[0020] Optionally, the flattening assembly further includes a lower flattening head, which is disposed on the supporting assembly and located at the flattening station, opposite to the upper flattening head.

[0021] Optionally, the cylinder, the connecting rod and the flattening assembly are each provided in plurality;

[0022] The plurality of flattening assemblies are movably arranged on the support assembly at intervals in sequence, the fixed ends of the plurality of cylinders are rotatably connected to the support assembly, the piston ends of the plurality of cylinders are rotatably connected to the first ends of the connecting rods, and the second ends of the plurality of connecting rods are rotatably connected to the support assembly and contact the flattening assemblies one by one.

[0023] A plurality of flattening stations are provided on the support assembly, and the plurality of flattening assemblies are respectively opposite to the flattening stations.

[0024] Optionally, the support assembly includes a base, a connecting plate, a support seat and a fixed shaft;

[0025] The connecting plate and the fixed shaft are respectively fixed on the base, the fixed end of the cylinder is hinged on the base, the second end of the connecting rod is hinged on the fixed shaft, and the flattening assembly is movably arranged on the base.

[0026] One technical effect of the present invention is that the fixed end of the cylinder and the second end of the connecting rod are respectively rotatably connected to the support assembly, so that the cylinder swings relative to the support assembly during operation, thereby reducing the radial force on the cylinder and increasing the service life of the cylinder.

[0027] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0029] Figure 1 The utility model is a structural schematic diagram of a welding strip flattening device provided by the utility model.

[0030] Figure 2 yes Figure 1 side view.

[0031] Figure 3 yes Figure 1 Cross-sectional view at AA in the middle.

[0032] Description of reference numerals:

[0033] 1. Cylinder; 2. Connecting rod; 3. First rotating shaft; 4. Second rotating shaft; 5. Movable joint; 6. Connecting block; 7. Pressing block; 8. Connecting shaft; 9. Upper flattening head; 10. Elastic member; 11. Lower flattening head; 12. Base; 13. Connecting plate; 14. Support seat; 15. Fixed shaft. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0036] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] In photovoltaic cell production, a cell is constructed from multiple cells connected in series via solder ribbons, with the cells and ribbons arranged in an alternating sequence. Using circular-cross-section ribbons to weld the cells results in significant bending and pressure during the subsequent string lamination process. Due to the thin and brittle structure of the cells, they are prone to cracking, breakage, and other undesirable conditions. Therefore, the ribbons must be flattened before being welded to the cells.

[0040] like Figures 1 to 3 As shown, according to one aspect of the utility model, a welding strip flattening device is provided, comprising: a supporting assembly, a flattening assembly and a driving assembly; a flattening station is provided on the supporting assembly; the flattening assembly is movably provided on the supporting assembly and is opposite to the flattening station; the driving assembly comprises a cylinder 1 and a connecting rod 2, the piston end of the cylinder 1 is rotatably connected to the first end of the connecting rod 2, and the fixed end of the cylinder 1 and the second end of the connecting rod 2 are respectively rotatably connected to the supporting assembly; the cylinder 1 is configured to be able to drive the connecting rod 2 to move, so that the flattening assembly is reciprocally pressed against the flattening station.

[0041] Specifically, in this embodiment, the support assembly is used to support the drive assembly and the flattening assembly, and the drive assembly is used to enable the flattening assembly to be pressed back and forth against the flattening station to flatten the welding strip placed at the flattening station. The flattening station is usually an area on the support assembly opposite to the position of the flattening assembly. It can be a part of the support assembly or a separately provided structural member, and is specifically designed according to actual needs. In addition, when the flattening assembly is pressed back and forth against the flattening station to flatten the welding strip, the separation of the flattening assembly and the flattening station can be achieved by the drive assembly or by components such as springs, and the second end of the connecting rod 2 is used to squeeze the flattening assembly to make it move. When the second end of the connecting rod 2 is not squeezing the flattening assembly, it may or may not be in contact with the flattening assembly, and the present invention does not impose any restrictions on this.

[0042] In the above embodiment, cylinder 1 and connecting rod 2 are rotatably connected to each other and are rotatably mounted on the support assembly. This allows the piston rod of cylinder 1 to drive connecting rod 2 to rotate during its extension and contraction, converting the rotation of connecting rod 2 into linear motion of the flattening assembly, thereby amplifying the output force and achieving the purpose of flattening the weld strip. Compared to the weld strip flattening device of the prior art, the cylinder 1 provided in this embodiment can swing about a fixed axis during operation, reducing the radial force on the piston end of cylinder 1, ensuring that it only bears axial force. This extends the service life of the piston rod of cylinder 1, thereby increasing the service life of the entire weld strip flattening device and reducing the maintenance cost of the device.

[0043] Alternatively, as Figure 2 As shown, the fixed end is rotatably connected to the support assembly via the first rotating shaft 3, and the piston end is rotatably connected to the connecting rod 2 via the second rotating shaft 4; the flattening assembly is movably arranged on the support assembly along the first direction, and in the first direction, the height of the first rotating shaft 3 is higher than the height of the second rotating shaft 4.

[0044] Specifically, in this embodiment, the fixed end of the cylinder 1 is hinged to the support assembly via a first rotating shaft 3, the piston end is hinged to the first end of the connecting rod 2 via a second rotating shaft 4, and the second end of the connecting rod 2 is rotatably connected to the support assembly, so that the entire cylinder 1 can swing around a fixed axis relative to the support assembly during operation, forming a floating mechanism. The height of the first rotating shaft 3 is set to be higher than the height of the second rotating shaft 4 in the first direction, so that when the cylinder 1 is extended, the piston end can push the connecting rod 2 to rotate in a set direction, thereby ensuring that the flattening assembly in contact with it can move along the first direction toward the flattening station until it presses against the flattening station, thereby achieving the purpose of flattening the welding strip.

[0045] Furthermore, the second end of the connecting rod 2 is hinged to the piston end through the second rotating shaft 4, so that the rotating pair formed between the piston end and the connecting rod 2 has a larger contact area and smaller contact stress. Compared with the linear contact movement form of the sliding connection form in the form of a waist-shaped hole in the prior art, it is easier to lubricate, thereby reducing the wear rate between the two and effectively extending the service life of the entire device.

[0046] Alternatively, as Figures 2 to 3 As shown, the drive assembly further includes a movable joint 5 , a first end of the movable joint 5 is fastened to the piston end via a thread, and a second end of the movable joint 5 is rotationally connected to the first end of the connecting rod 2 via a second rotating shaft 4 .

[0047] Specifically, in this embodiment, the piston end of the cylinder 1 is connected to the connecting rod 2 through the movable joint 5, so that in actual work, the output force of the cylinder 1 is transmitted to the connecting rod 2 through the movable joint 5, and the movable wear between the piston end and the connecting rod 2 is replaced by the movable joint 5. In actual application, later maintenance and replacement can be achieved by replacing the movable joint 5, further improving the service life of the cylinder 1.

[0048] In addition, the movable joint 5 is connected to the piston end through a threaded connection, which on the one hand facilitates the assembly and replacement of the piston joint, and on the other hand can further optimize the force applied to the piston rod during the extension and retraction process by setting the rotation direction of the thread, thereby comprehensively improving the service life of the cylinder 1.

[0049] Alternatively, as Figures 2 to 3As shown, when the flattening assembly is pressed against the flattening station, the angle between the cylinder 1 and the connecting rod 2 is a right angle.

[0050] Specifically, in actual applications, when the extension and retraction direction of the piston rod of the cylinder 1 is perpendicular to the direction of the connecting rod 2, the force from the piston rod to the connecting rod 2 to the flattening assembly can be transmitted to the maximum. At this time, the flattening assembly is pressed against the flattening station to realize the flattening action of the welding strip, which can optimize the energy consumption of the flattening action and improve the utilization efficiency of the output force of the cylinder 1.

[0051] Alternatively, as Figure 1 and Figure 3 As shown, the welding strip flattening device also includes a connecting block 6 and a pressing block 7. The pressing block 7 is fixed to the second end of the connecting rod 2 through the connecting block 6 and is in line contact with the flattening assembly.

[0052] Specifically, in this embodiment, the second end of the connecting rod 2 is connected to the pressure block 7 through the connecting block 6, wherein the connecting block 6 is used to connect the connecting rod 2 and the pressure block 7. In order to enable the output force of the cylinder 1 to be accurately transmitted to the connecting rod 2, and further enable the second end of the connecting rod 2 to press the flattening assembly through the pressure block 7 to perform linear motion, the connecting rod 2 and the pressure block 7 can be designed as this split structure, which is convenient for installation and disassembly, and enables the pressure block 7 to directly contact the flattening assembly, thereby realizing the transmission of the output force of the cylinder 1 to the flattening assembly.

[0053] Furthermore, the linear contact between the pressing block 7 and the flattening assembly enables the flattening assembly to evenly bear the transmission force on the pressing block 7, avoiding single-point or local overload, significantly reducing wear and damage caused by local stress concentration, and at the same time improving the service life of the pressing block 7 and the flattening assembly.

[0054] Furthermore, the line contact force transmission method offers improved flexibility, making it suitable for applications requiring force transmission around corners or along complex paths. This improves the flexibility and adaptability of force transmission between the drive assembly and the flattening assembly. Furthermore, the line contact method reduces friction between the pressure block 7 and the flattening assembly, thereby reducing energy loss, improving transmission efficiency, and enhancing the overall performance of the ribbon flattening device.

[0055] In one embodiment, the contact surface of the pressing block 7 with the flattening component can be designed as an arc-shaped surface to achieve linear contact between the two.

[0056] Alternatively, as Figures 1 to 3 As shown, the cylinder 1 has an initial position and a flattening position; when the cylinder 1 is at the initial position, the cylinder 1 is in a retracted state, and the flattening assembly is separated from the flattening station; when the cylinder 1 is at the flattening position, the cylinder 1 is in an extended state, and the flattening assembly is pressed against the flattening station.

[0057] Specifically, in this embodiment, when the cylinder 1 is in the initial position, the piston rod of the cylinder 1 is in a retracted state, the second end of the connecting rod 2 is at the highest point during the working process, and the flattening assembly is also at the farthest position from the flattening station.

[0058] When the cylinder 1 is extended, the angle between the piston rod of the cylinder 1 and the connecting rod 2 gradually decreases, the cylinder 1 swings on the support assembly, and the connecting rod 2 rotates around the fixed axis 15 under the push of the piston end. The second end of the connecting rod 2 produces a partial displacement in the moving direction of the flattening assembly as the connecting rod 2 rotates, and then squeezes the flattening assembly, so that it approaches and presses against the flattening station to extrude the welding strip. At this time, the cylinder 1 is in the flattening position, realizing the flattening of the welding strip.

[0059] When the cylinder 1 retracts again, the cylinder 1 rotates to the initial position, the connecting rod 2 rotates in the opposite direction, and the flattening assembly can leave the flattening station under the drive of the connecting rod 2 or the action of the external elastic structure.

[0060] During the entire operation of the ribbon flattening device, cylinder 1 adaptively swings according to the applied force, and the piston rod bears the axial force, thus avoiding the radial force that would otherwise be applied to cylinder 1 if the cylinder 1 were completely fixed. The initial and flattening positions facilitate the placement and removal of the ribbon from the flattening station while also reducing the device's energy consumption.

[0061] Alternatively, as Figure 1 and Figure 3 As shown, the flattening assembly includes a connecting shaft 8, an upper flattening head 9 and an elastic member 10; the connecting shaft 8 is movably assembled on the supporting assembly through the elastic member 10, the first end of the connecting shaft 8 is in contact with the second end of the connecting rod 2, and the upper flattening head 9 is fixed on the second end of the connecting shaft 8 and is opposite to the flattening station; when the cylinder 1 is at the initial position, the elastic member 10 can enable the connecting shaft 8 to drive the upper flattening head 9 to disengage from the flattening station.

[0062] Specifically, in this embodiment, the arrangement of the connecting shaft 8 facilitates the movable assembly of the upper flattening head 9 on the support assembly, while the arrangement of the elastic member 10 facilitates the restoration of the upper flattening head 9 to its initial position via the connecting shaft 8, thereby ensuring that the flattening assembly can maintain contact with the second end of the connecting rod 2, thereby improving the accuracy of the operation of the entire device. The elastic member 10 can be configured as a compression spring. The contact between the flattening assembly and the second end of the connecting rod 2 can be direct or indirect, such as through the pressure block 7, which is not limited in the present invention.

[0063] Alternatively, as Figure 1 and Figure 3 As shown, the flattening assembly further includes a lower flattening head 11 , which is arranged on the supporting assembly and located at the flattening station, opposite to the upper flattening head 9 .

[0064] Specifically, in practical applications, the support of the soldering ribbon can also be achieved through the lower flattening head 11, so that the upper flattening head 9 can flatten the soldering ribbon by pressing against the lower flattening head 11. The design of the lower flattening head 11 facilitates the positioning and flattening of the soldering ribbon, and can increase its service life and facilitate replacement and repair after damage through the design of materials and structures.

[0065] Alternatively, as Figure 1 As shown, there are multiple cylinders 1, connecting rods 2 and flattening assemblies respectively; the multiple flattening assemblies are movably arranged on the support assembly at intervals in sequence, the fixed ends of the multiple cylinders 1 are rotatably connected to the support assembly, the piston ends of the multiple cylinders 1 are rotatably connected to the first ends of the connecting rods 2, and the second ends of the multiple connecting rods 2 are rotatably connected to the support assembly, and are in contact with the flattening assemblies one by one; a plurality of flattening stations are provided on the support assembly, and the plurality of flattening assemblies are opposite to the flattening stations one by one.

[0066] Specifically, in practical applications, to improve the flattening efficiency of the welding ribbon, multiple flattening assemblies and corresponding flattening stations can be simultaneously provided. Driven by the air cylinder 1, the second end of the connecting rod 2 can compress each flattening assembly one by one, achieving reciprocal pressing of the multiple flattening assemblies against the corresponding flattening stations, thereby reducing flattening costs and improving flattening efficiency. The flattening assemblies can be arranged in a sequentially spaced arrangement, which not only improves the compactness of the equipment but also prevents interference between the flattening assemblies.

[0067] In one embodiment, if Figures 1 to 2 As shown, the heights between two adjacent cylinders 1 can be set to be staggered, further improving the compactness of the equipment and reducing the space occupied by the equipment.

[0068] Alternatively, as Figures 1 to 2 As shown, the support assembly includes a base 12, a connecting plate 13, a support base 14 and a fixed shaft 15; the connecting plate 13 and the fixed shaft 15 are respectively fixed on the base 12, the fixed end of the cylinder 1 is hinged to the base 12, the second end of the connecting rod 2 is hinged to the fixed shaft 15, and the flattening assembly is movably arranged on the base 12.

[0069] Specifically, in this embodiment, the base 12 is used to support the drive assembly and the flattening assembly. A connecting plate 13 is fixedly connected to one end of the base 12. A support base 14 is fixed to the connecting plate 13 to facilitate the articulation of the fixed end of the cylinder 1. The provision of a fixed shaft 15 facilitates the fixing of the second ends of multiple connecting rods 2 to the same position on the base 12, thereby facilitating the respective flattening assemblies, thereby improving the overall performance of the device.

[0070] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0071] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art will appreciate that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A welding ribbon flattening device, characterized in that: include: A support assembly, wherein the support assembly is provided with a flattening station; a flattening assembly, the flattening assembly being movably disposed on the supporting assembly and opposite to the flattening station; A drive assembly, the drive assembly comprising a cylinder and a connecting rod, wherein a piston end of the cylinder is rotatably connected to a first end of the connecting rod, and a fixed end of the cylinder and a second end of the connecting rod are rotatably connected to the support assembly respectively; The cylinder is configured to drive the connecting rod to move, so that the flattening assembly is pressed against the flattening station reciprocatingly.

2. The welding ribbon flattening device according to claim 1, characterized in that: The fixed end is rotatably connected to the support assembly via a first rotating shaft, and the piston end is rotatably connected to the connecting rod via a second rotating shaft; The flattening assembly is movably disposed on the supporting assembly along a first direction. In the first direction, the height of the first rotating shaft is higher than the height of the second rotating shaft.

3. The welding ribbon flattening device according to claim 2, characterized in that: The driving assembly further includes a movable joint, a first end of which is fastened to the piston end via a thread, and a second end of which is rotationally connected to the first end of the connecting rod via the second rotating shaft.

4. The welding ribbon flattening device according to claim 2, characterized in that: When the flattening assembly is pressed against the flattening station, the angle between the cylinder and the connecting rod is a right angle.

5. The welding ribbon flattening device according to claim 1, characterized in that: It also includes a connecting block and a pressing block. The pressing block is fixed to the second end of the connecting rod through the connecting block and is in line contact with the flattening assembly.

6. The welding ribbon flattening device according to claim 1, characterized in that: The cylinder has an initial position and a flattened position; When the cylinder is located at the initial position, the cylinder is in a retracted state, and the flattening assembly is separated from the flattening station; When the cylinder is located at the flattening position, the cylinder is in an extended state, and the flattening assembly is pressed against the flattening station.

7. The welding ribbon flattening device according to claim 6, characterized in that: The flattening assembly includes a connecting shaft, an upper flattening head and an elastic member; The connecting shaft is movably assembled on the supporting assembly through the elastic member, the first end of the connecting shaft contacts the second end of the connecting rod, and the upper flattening head is fixed on the second end of the connecting shaft and is opposite to the flattening station; When the cylinder is located at the initial position, the elastic member can enable the connecting shaft to drive the upper flattening head to leave the flattening station.

8. The welding ribbon flattening device according to claim 7, characterized in that: The flattening assembly further includes a lower flattening head, which is arranged on the supporting assembly and located at the flattening station, opposite to the upper flattening head.

9. The welding ribbon flattening device according to claim 1, characterized in that: The cylinder, the connecting rod and the flattening assembly are respectively provided in plurality; The plurality of flattening assemblies are movably arranged on the support assembly at intervals in sequence, the fixed ends of the plurality of cylinders are rotatably connected to the support assembly, the piston ends of the plurality of cylinders are rotatably connected to the first ends of the connecting rods, and the second ends of the plurality of connecting rods are rotatably connected to the support assembly and contact the flattening assemblies one by one. A plurality of the flattening stations are provided on the support assembly, and the plurality of the flattening assemblies are respectively opposite to the flattening stations.

10. The welding ribbon flattening device according to any one of claims 1 to 9, characterized in that: The support assembly includes a base, a connecting plate, a support seat and a fixed shaft; The connecting plate and the fixed shaft are respectively fixed on the base, the fixed end of the cylinder is hinged on the base, the second end of the connecting rod is hinged on the fixed shaft, and the flattening assembly is movably arranged on the base.

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