Photovoltaic cell tab straightening device

Abstract

The application discloses a photovoltaic cell welding strip correcting device and relates to the technical field of photovoltaic cell manufacturing.The device comprises a workbench, two upper and lower through sliding grooves are formed in the upper end of the workbench, two lifting mechanisms are slidably connected in the sliding grooves, and clamping mechanisms are arranged at the upper ends of the lifting mechanisms.The two ends of the welding strip are clamped and positioned by the two clamping mechanisms.The clamping mechanism comprises a bottom plate, a fixed plate is fixedly installed at the upper end of the bottom plate, a movable plate is slidably connected to the upper end surface of the bottom plate along the axial direction, and a pressing plate is rotatably connected to one end of the movable plate close to the welding strip.The clamping of the welding strip in the horizontal direction is realized by the horizontal movement of the movable plate and the fixed plate, the clamping of the welding strip in the vertical direction is realized by the rotary movement of the pressing plate, the probability of virtual welding of the welding strip during welding is reduced, and the horizontal movement of the movable plate and the rotary movement of the pressing plate are both driven by electric cylinders, so that the manufacturing cost of the device is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cell manufacturing, and in particular to a photovoltaic cell welding ribbon correction device. Background Art

[0002] Photovoltaic welding ribbon, also known as tinned copper ribbon or tin-coated copper ribbon, is divided into bus ribbon and interconnection strip. It is used to connect the solar cells of photovoltaic modules and plays an important role in conducting electricity and gathering electricity.

[0003] Patent document CN208427901U discloses a photovoltaic cell ribbon correction device, belonging to the field of photovoltaic cell manufacturing technology. The device includes a clamping mechanism connected to the frame of a photovoltaic cell ribbon welding machine. The clamping mechanism is used in conjunction with the electric soldering iron used to weld the ribbon, and is positioned on the unwelded side of the ribbon. The beneficial effect is that when welding the photovoltaic cell ribbon, the clamping mechanism clamps the ribbon in the middle, serving as a guide for the ribbon's movement and preventing it from shifting during the welding process.

[0004] The above patent only restricts the horizontal direction of the soldering ribbon. When the soldering ribbon contacts the soldering iron, the stress on the soldering ribbon may cause vertical movement, which in turn causes a certain gap between the soldering ribbon and the battery cell, resulting in the phenomenon of cold soldering. Based on this, the present invention proposes a photovoltaic cell soldering ribbon correction device to clamp and position the soldering ribbon in both the horizontal and vertical directions. Summary of the Invention

[0005] The purpose of the present invention is to provide a photovoltaic cell welding ribbon correction device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] The photovoltaic cell welding ribbon correction device includes a workbench, the upper end of which is provided with two vertically penetrating chute, the chute is slidably connected with two lifting mechanisms, and the upper end of the lifting mechanism is provided with a clamping mechanism;

[0008] The lifting mechanism is used to move along the plumb bob direction and drive the clamping mechanism to move so that the clamping mechanism just contacts the welding strip;

[0009] The two ends of the welding strip are clamped and positioned respectively by the two clamping mechanisms, and the clamping mechanism includes a base plate, a fixed plate is fixedly installed on the upper end of the base plate, and a movable plate is connected to the upper end surface of the base plate for sliding along its axial direction, and the movable plate and the fixed plate are respectively located on both sides of the welding strip, and the movable plate is connected to a pressing plate for rotation close to one end of the welding strip; the movable plate moves toward the direction close to the fixed plate and approaches the welding strip, and after the welding strip is clamped by the movable plate and the fixed plate, the pressing plate rotates toward the direction close to the welding strip to press the welding strip.

[0010] Preferably, the movable plate has an L-shaped structure, the left end of the movable plate is provided with an accommodating cavity matching the shape of the pressing plate, the right end of the movable plate is provided with an opening that penetrates the accommodating cavity, the lower left end of the movable plate is slidably connected to several guide rods, and the left ends of several guide rods are jointly installed with a docking block, the outer surface of the guide rod is sleeved with a spring, the spring is located between the docking block and the movable plate, and the right end of the docking block is installed with a driving rod, the driving rod passes through the movable plate and is fixedly installed with a first connecting frame, the right end of the movable plate is fixedly installed with a fixing frame, the fixing frame is located directly below the opening, and a connecting rod is rotatably connected in the fixing frame, the front end of the connecting rod is provided with a driving groove that passes through the front and back, the first connecting frame is slidably connected to the driving groove, and the end of the connecting rod away from the driving groove is provided with a first hook.

[0011] Preferably, a second connecting frame and a second hook are installed at the right end of the pressing plate. In an initial state, the second connecting frame is located in the opening, and the second hook is engaged with the first hook.

[0012] Preferably, two guide rails are installed on the bottom plate, and the two guide rails are symmetrically distributed front to back with the driving rod as the center. A slider is slidably connected to the guide rail, and the upper end of the slider is fixedly connected to the lower end of the movable plate.

[0013] Preferably, a third connecting frame is installed on the upper end of the base plate, an electric cylinder is rotatably connected in the third connecting frame, and a movable end of the electric cylinder is rotatably connected to the second connecting frame.

[0014] Preferably, the fixing plate is in an L-shaped structure, and the right portion of the upper end surface of the fixing plate is flush with the upper end surface of the docking block.

[0015] Preferably, the end surfaces of the first hook and the second hook that are away from each other are in an arc structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) In the present invention, the movable plate moves toward the direction close to the fixed plate and approaches the welding strip. After the welding strip is clamped by the movable plate and the fixed plate, the pressing plate rotates toward the direction close to the welding strip, pressing the welding strip, limiting the movement of the welding strip in the horizontal and vertical directions, and effectively reducing the probability of producing cold welds when welding the welding strip.

[0018] (2) When the movable plate does not contact the fixed plate, the first hook is engaged with the second hook, and the pressing plate cannot rotate. When the movable plate contacts the fixed plate through the docking block, the docking block is driven by the reaction force to drive the driving rod toward the direction away from the fixed plate. At the same time, the driving rod moves in the driving groove, causing the connecting rod to rotate toward the direction away from the second hook. The connecting rod drives the first hook to gradually separate from the second hook. When the movable plate contacts the welding strip, the first hook just separates from the second hook. At this time, the pressing plate is flipped under the drive of the movable end of the electric cylinder. During the whole process, the horizontal movement of the movable plate and the rotational movement of the pressing plate are both driven by the electric cylinder, saving the manufacturing cost and maintenance cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 A schematic structural diagram of the entire correction device proposed in an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the initial state of the clamping mechanism in an embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the clamping state of the clamping mechanism in an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a movable plate in an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the cross-sectional structure of the movable plate in an embodiment of the present invention;

[0025] Figure 6 A schematic structural diagram of a pressing plate in an embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the bottom plate in an embodiment of the present invention.

[0027] In the figure: 1. Workbench; 2. Slide; 3. Lifting mechanism; 5. Battery cell; 6. Solder ribbon;

[0028] 4. Clamping mechanism; 41. Bottom plate; 42. Fixed plate; 43. Movable plate; 44. Pressing plate;

[0029] 421, second connecting frame; 422, second hook;

[0030] 431, accommodating chamber; 432, opening; 433, docking block; 434, guide rod; 435, spring; 436, driving rod; 437, first connecting frame; 438, connecting rod; 4381, driving slot; 4382, first hook; 439, fixing frame;

[0031] 51. Third connecting frame; 52. Electric cylinder;

[0032] 61. Guide rail; 62. Slider. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 7 This embodiment proposes a photovoltaic cell welding ribbon correction device, including a workbench 1, with two vertically penetrating chutes 2 provided at the upper end of the workbench 1, two lifting mechanisms 3 slidingly connected in the chutes 2, and a clamping mechanism 4 provided at the upper end of the lifting mechanism 3.

[0035] The lifting mechanism 3 is configured to move in the plumb bob direction and drive the clamping mechanism 4 to move, so that the clamping mechanism 4 just contacts the welding strip. Specifically, the present embodiment does not limit the specific structure of the lifting mechanism 3. In the present embodiment, a hydraulic cylinder is used to drive the clamping mechanism 4 up and down. The mounting seat of the hydraulic cylinder is slidably connected to the chute 2. The movable end of the hydraulic cylinder is extended and retracted to drive the clamping mechanism 4 up and down, and is used to adjust the distance between the clamping mechanism 4 and the welding strip. This makes the present device suitable for welding strips of different thicknesses, thereby improving its applicability. The distance between two clamping mechanisms 4 located in the same chute 2 is adjustable, making the present device suitable for welding strips of different lengths.

[0036] The two ends of the welding strip are clamped and positioned respectively by the two clamping mechanisms 4, and the clamping mechanism 4 includes a bottom plate 41, a fixed plate 42 is fixedly installed on the upper end of the bottom plate 41, and a movable plate 43 is connected to the upper end surface of the bottom plate 41 along its axial sliding. The movable plate 43 and the fixed plate 42 are respectively located on both sides of the welding strip, and the movable plate 43 is connected to a pressing plate 44 that is rotated close to one end of the welding strip; the movable plate 43 moves toward the direction close to the fixed plate 42 and approaches the welding strip. After the welding strip is clamped by the movable plate 43 and the fixed plate 42, the pressing plate 44 rotates toward the direction close to the welding strip to press the welding strip.

[0037] Specifically, the movable plate 43 is in an L-shaped structure. The left end of the movable plate 43 is provided with a receiving cavity 431 that matches the shape of the pressing plate 44. In the initial state, the pressing plate 44 is located in the receiving cavity 431 and is flush with the movable plate 43, so as not to affect the placement of the welding strip. The right end of the movable plate 43 is provided with an opening 432 that is connected to the receiving cavity 431. The opening 432 is used to place the second connecting frame 421. When the pressing plate 44 rotates, the movable end of the electric cylinder 52 just passes through the opening 432. The left end of the movable plate 43 The lower end is slidably connected to a plurality of guide rods 434. In this embodiment, there are two guide rods 434. The two guide rods 434 are symmetrically distributed front and back with the driving rod 436 as the center. The left ends of the two guide rods 434 are jointly installed with a docking block 433. The outer surface of the guide rod 434 is sleeved with a spring 435. The spring 435 is located between the docking block 433 and the movable plate 43. The reset of the driving rod 436 is achieved by the spring 435. When the docking block 433 is no longer in contact with the fixed plate 42, the spring 435 drives the docking block 433 to move. 33 is reset, the docking block 433 drives the driving rod 436 to move towards the direction close to the fixed plate 42, and the driving rod 436 drives the connecting rod 438 to move in the opposite direction close to the second hook 422, so that the first hook 4382 and the second hook 422 are engaged again; the right end of the docking block 433 is equipped with a driving rod 436, the driving rod 436 passes through the movable plate 43 and is fixedly installed with a first connecting frame 437, and the right end of the movable plate 43 is fixedly installed with a fixing frame 439, the fixing frame 439 is located just below the opening 432, and the A connecting rod 438 is rotatably connected inside the fixed frame 439, and a driving groove 4381 is opened at the front end of the connecting rod 438, which passes through the front and back. The first connecting frame 437 is slidably connected to the driving groove 4381, and a first hook 4382 is installed at the end of the connecting rod 438 away from the driving groove 4381; two guide rails 61 are installed on the base plate 41, and the two guide rails 61 are symmetrically distributed front and back with the driving rod 436 as the center, and a slider 62 is slidably connected to the guide rail 61, and the upper end of the slider 62 is fixedly connected to the lower end of the movable plate 43.

[0038] Specifically, a second connecting frame 421 and a second hook 422 are installed at the right end of the pressing plate 44 . In an initial state, the second connecting frame 421 is located in the opening 432 , and the second hook 422 is engaged with the first hook 4382 .

[0039] Specifically, a third connecting frame 51 is installed on the upper end of the base plate 41 , an electric cylinder 52 is rotatably connected inside the third connecting frame 51 , and a movable end of the electric cylinder 52 is rotatably connected to the second connecting frame 421 .

[0040] In the initial state, the first hook 4382 is engaged with the second hook 422, so that the pressing plate 44 and the movable plate 43 are integrated. During use, the movable end of the electric cylinder 52 is extended to drive the two to move toward the fixed plate 42. When the docking block 433 contacts the fixed plate 42, the first hook 4382 gradually disengages from the second hook 422. When the movable plate 43 contacts the welding strip, the first hook 4382 completely disengages from the second hook 422, so that the pressing plate 44 and the movable plate 43 are separated. As the movable end of the electric cylinder 52 continues to extend, the pressing plate 44 flips over until it presses the welding strip.

[0041] In order to cooperate with the pressing plate 44 to clamp the welding ribbon in the vertical direction, in this embodiment, the fixing plate 42 is L-shaped, and the right part of the upper end surface of the fixing plate 42 is flush with the upper end surface of the docking block 433. The fixing plate 42 supports the welding ribbon to prevent it from moving downward.

[0042] In order to facilitate the engagement between the first hook 4382 and the second hook 422 , in this embodiment, the end surfaces of the first hook 4382 and the second hook 422 that are away from each other are in an arcuate structure.

[0043] After the welding of the welding strip is completed, the electric cylinder 52 is started, the movable end of the electric cylinder 52 contracts and drives the pressing plate 44 to rotate in the direction away from the welding strip until the pressing plate 44 is completely in contact with the movable plate 43. At this time, the pressing plate 44 cannot rotate and can only drive the movable plate 43 to move horizontally. As the movable end of the electric cylinder 52 contracts, the movable plate 43 moves along the guide rail 61 away from the fixed plate 42, and the fixed plate 42 drives the docking block 433 away from the fixed plate 42 under the elastic action of the spring 435. The spring 435 drives the docking block 433 to reset, and the docking block 433 drives the driving rod 436 to move in the direction close to the fixed plate 42. The driving rod 436 drives the connecting rod 438 to move in the opposite direction close to the second hook 422, so that the first hook 4382 and the second hook 422 are engaged again, so that the pressing plate 44 and the movable plate 43 are integrated, which is convenient for clamping and positioning the welding strip next time.

[0044] In the description of the present invention, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0045] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to the embodiments without departing from the spirit and scope of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic cell welding ribbon correction device, comprising a workbench (1), characterized in that: The upper end of the workbench (1) is provided with two vertically penetrating chute (2), two lifting mechanisms (3) are slidably connected in the chute (2), and a clamping mechanism (4) is provided at the upper end of the lifting mechanism (3); The lifting mechanism (3) is used to move along the plumb bob direction and drive the clamping mechanism (4) to move, so that the clamping mechanism (4) just contacts the welding strip; The two ends of the welding strip are clamped and positioned respectively by the two clamping mechanisms (4), the clamping mechanism (4) includes a bottom plate (41), a fixed plate (42) is fixedly installed on the upper end of the bottom plate (41), and the upper end surface of the bottom plate (41) is connected to a movable plate (43) along its axial sliding connection, the movable plate (43) and the fixed plate (42) are respectively located on both sides of the welding strip, and the movable plate (43) is connected to a pressing plate (44) when it is rotated near one end of the welding strip; the movable plate (43) moves in a direction close to the fixed plate (42) and approaches the welding strip, and after the welding strip is clamped by the movable plate (43) and the fixed plate (42), the pressing plate 44 rotates in a direction close to the welding strip to press the welding strip; The movable plate (43) is in an L-shaped structure. The left end of the movable plate (43) is provided with a receiving cavity (431) that matches the shape of the pressing plate (44). The right end of the movable plate (43) is provided with an opening (432) that is connected to the receiving cavity (431). The lower part of the left end of the movable plate (43) is slidably connected with several guide rods (434). The left ends of several guide rods (434) are commonly installed with a docking block (433). The outer surface of the guide rod (434) is sleeved with a spring (435). The spring (435) is located between the docking block (433) and the movable plate (43). The right end of the docking block (433) is installed A driving rod (436) is installed, and the driving rod (436) passes through the movable plate (43) and is fixedly installed with a first connecting frame (437). A fixing frame (439) is fixedly installed on the right end of the movable plate (43). The fixing frame (439) is located directly below the opening (432). A connecting rod (438) is rotatably connected in the fixing frame (439). A driving groove (4381) that passes through the front and back is opened at the front end of the connecting rod (438). The first connecting frame (437) is slidably connected to the driving groove (4381). A first hook (4382) is installed at the end of the connecting rod (438) away from the driving groove (4381); A second connecting frame (421) and a second hook (422) are installed at the right end of the pressing plate (44). In the initial state, the second connecting frame (421) is located in the opening (432), and the second hook (422) is engaged with the first hook (4382). Two guide rails (61) are installed on the bottom plate (41), and the two guide rails (61) are symmetrically distributed front and back with the driving rod (436) as the center. A slider (62) is slidably connected to the guide rail (61), and the upper end of the slider (62) is fixedly connected to the lower end of the movable plate (43); A third connecting frame (51) is installed on the upper end of the base plate (41), an electric cylinder (52) is rotatably connected inside the third connecting frame (51), and a movable end of the electric cylinder (52) is rotatably connected to the second connecting frame (421).

2. The photovoltaic cell ribbon correction device according to claim 1, characterized in that: The fixing plate (42) is in an L-shaped structure, and the right portion of the upper end surface of the fixing plate (42) is flush with the upper end surface of the docking block (433).

3. The photovoltaic cell ribbon correction device according to claim 1, characterized in that: The end surfaces of the first hook (4382) and the second hook (422) that are away from each other are in an arc structure.

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