Photovoltaic welding strip flattening device

Abstract

The utility model relates to the technical field of photovoltaic welding, in particular to a photovoltaic welding strip flattening device which comprises a top plate, an upper-layer plate, a middle-layer plate and a lower-layer plate which are sequentially overlapped from top to bottom. The top plate, the upper-layer plate, the middle-layer plate and the lower-layer plate are connected in a penetrating mode through long bolts. The upper-layer plate, the middle-layer plate, the lower-layer plate and the top plate are connected in series through a plurality of long bolts to form an integral structure; impact force generated by downward beating of the beating flat head cannot only act on the middle-layer plate and the lower-layer plate and can also be shared and absorbed by the top plate and the upper-layer plate, and the situations that the middle-layer plate deforms and cracks and long bolts are broken can be effectively reduced; therefore, the service life of the middle-layer plate is prolonged, and the flattening effect of the welding strip is improved; and moreover, the middle-layer plate is clamped and fixed by the upper-layer plate and the lower-layer plate, so that even if the middle-layer plate is cracked, the middle-layer plate cannot be completely broken and dispersed immediately and can still work in a short time, and the continuity of flattening work of the welding strip is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic welding technology, specifically a photovoltaic welding strip flattening device. Background Technology

[0002] When manufacturing photovoltaic panels, solder ribbons are used to weld adjacent cells together and then connect them to busbars to form a circuit connection panel. In order to improve the connection effect of the solder ribbons, save space, and optimize current distribution, the solder ribbons are usually flattened before welding.

[0003] The method of flattening welding strip mainly involves using mechanical equipment to flatten the welding strip. Common welding strip flattening devices consist of upper, middle, and lower single-layer plate structures, with adjacent layers fixed together by bolts. The reciprocating downward impact structure inside the middle plate, in conjunction with the lower plate, flattens the material strip.

[0004] Because the upper and middle plates are fixed together by bolts, and the middle and lower plates are fixed together by bolts, gaps and wobbling are easily generated between the three plates after long-term use. Furthermore, during the flattening process of the welding strip, the plate-like structure of the middle plate is subjected to the greatest force, which makes the middle plate prone to cracking and bolt breakage, resulting in poor flattening effect of the welding strip and damage to the base plate.

[0005] Therefore, a photovoltaic ribbon flattening device is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A photovoltaic welding strip flattening device of this utility model is characterized in that: it includes a top plate, an upper plate, a middle plate and a lower plate stacked sequentially from top to bottom; the lower plate has a plurality of receiving grooves for placing welding strips on the end face near the middle plate; the middle plate is provided with a plurality of flattening heads; the flattening heads can press down to flatten the welding strips in the receiving grooves; wherein, the top plate, upper plate, middle plate and lower plate are connected by long bolts.

[0008] Preferably, a cylinder is fixedly connected to the end face of the upper plate away from the middle plate, and the piston rod of the cylinder can penetrate the upper plate; multiple flattening arms are rotatably mounted on the other end face of the upper plate away from the middle plate; the piston rod of the cylinder can drive the flattening arms to swing up and down and rotate; a protrusion is fixedly connected to the bottom of the flattening arm away from the cylinder; the protrusion can press down the flattening head.

[0009] Preferably, the piston rod of the cylinder is fitted with a pair of clamping plates on its outer ring; the two clamping plates are locked together by a plurality of bolts; one of the clamping plates near the flattening arm is hinged to the ends of the plurality of flattening arms.

[0010] Preferably, a plurality of pressure plates are bolted to the top surface of the upper plate and above the flattening arm; the pressure plates have a plurality of arc-shaped grooves corresponding to the flattening arm on the side near the flattening arm.

[0011] Preferably, the pressure plate is provided with a threaded stop post at the position corresponding to the arc-shaped groove, and the threaded stop post can block the rotation of the flattening arm.

[0012] Preferably, the middle layer plate has a plurality of buffer blind holes at the end face near the upper layer plate and at a position corresponding to the cylinder; the piston rod of the cylinder can extend into the buffer blind holes.

[0013] Preferably, the lower plate is attached to the end face of the middle plate and at the position corresponding to the flattening head, and the top surface of the second strip plate coincides with the bottom surface of the receiving groove; the welding strip can pass through the top surface of the second strip plate.

[0014] Preferably, the bottom surface of the lower plate is provided with reinforcing ribs fitted onto the plurality of long bolts.

[0015] Preferably, positioning posts for positioning and installation are provided on both sides of the adjacent end faces of the top plate, upper plate, middle plate and lower plate.

[0016] Preferably, both ends of the receiving groove are provided with arc-shaped chamfers.

[0017] The advantages of this utility model are:

[0018] 1. The photovoltaic ribbon flattening device of this utility model comprises an upper plate, a middle plate, a lower plate, a top plate, and long bolts. Multiple long bolts are used to stack and lock the top plate, upper plate, middle plate, and lower plate together to form a continuous structure. The impact force generated by the downward striking of the flattening head is not only applied to the middle and lower plates but is also absorbed by the top and upper plates, effectively reducing the risk of deformation and cracking of the middle plate and breakage of the long bolts. This improves the service life of the middle plate and thus enhances the ribbon flattening effect. Furthermore, because the middle plate is clamped and fixed by the upper and lower plates, even if the middle plate cracks, it will not immediately break completely and can still work for a short time, effectively ensuring the continuity of the ribbon flattening operation.

[0019] 2. The photovoltaic welding strip flattening device of this utility model comprises a cylinder, a flattening head, a rotating shaft, a flattening arm, a protrusion, and a clamping plate. The piston rod of the multi-rod cylinder extends downward, causing the clamping plate to move downward, which in turn causes one end of the flattening arm, hinged to the clamping plate, to rotate downward. This causes the other end of the flattening arm to rotate around the rotating shaft, causing the protrusion to rotate within the second through slot. At this time, the flattening head is pushed by a spring, causing the top of the flattening head to extend upward from the inside of the first through slot into the bottom of the second through slot. When the protrusion rotates, it presses downward against the top of the flattening head, causing the flattening head to slide downward along the mounting hole of the first strip, compressing the spring. The bottom of the flattening head presses down on the welding strip, cooperating with the lower plate to flatten the welding strip, thus achieving the flattening of the welding strip. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is an exploded view of the present invention;

[0023] Figure 3 This is a top structural diagram of the upper plate of this utility model;

[0024] Figure 4 This is a top structural diagram of the middle layer plate of this utility model;

[0025] Figure 5 This is a top structural diagram of the lower layer plate of this utility model;

[0026] Figure 6 This is a bottom structural diagram of the middle layer plate of this utility model;

[0027] Figure 7 This is an exploded view of the middle layer plate of this utility model;

[0028] Figure 8 This is an exploded view of the upper plate of this utility model;

[0029] Figure 9 This is a perspective view of the flattening rotating arm in this utility model;

[0030] Figure 10 This is a perspective view of the pressure plate of this utility model.

[0031] In the diagram: 1. Upper plate; 2. Middle plate; 3. Lower plate; 4. Top plate; 5. Long bolt; 7. Cylinder; 8. No. 1 through slot; 9. No. 1 mounting slot; 10. No. 1 strip plate; 11. Mounting hole; 12. Flattened head; 13. No. 2 through slot; 14. Shaft; 15. Flattened rotating arm; 16. Protrusion; 17. Clamping plate; 18. Through hole; 19. Rubber ring; 20. Buffer blind hole; 21. Pressure plate; 22. Arc groove; 23. Threaded stop post; 24. Receiving groove; 25. No. 2 mounting slot; 26. No. 2 strip plate; 27. Reinforcing rib; 28. Positioning blind hole; 29. ​​Positioning post; 30. Stepped groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0033] like Figures 1 to 7 As shown, a photovoltaic ribbon flattening device includes a top plate 4, an upper plate 1, a middle plate 2, and a lower plate 3 stacked sequentially from top to bottom; the lower plate 3 has multiple receiving grooves 24 for placing the ribbon on its end face near the middle plate 2; the middle plate 2 has multiple flattening heads 12 that pass through it; the flattening heads 12 can press down to flatten the ribbon in the receiving grooves 24.

[0034] In this embodiment, the flattened head 12 consists of a rounded square block with an inclined arc surface and a vertical rod, and the bottom outer ring of the vertical rod is provided with a groove for installing a spring.

[0035] In specific implementation, a first mounting groove 9 is opened on the side of the middle layer plate 2 near the lower layer plate 3; a first strip plate 10 is bolted inside the first mounting groove 9; a plurality of mounting holes 11 for mounting the flattening head 12 are evenly opened on the first strip plate 10, and a spring is provided on the outer ring of the flattening head 12; a plurality of first through grooves 8 are opened on the side of the middle layer plate 2 near the upper layer plate 1, and at the position corresponding to the mounting holes 11 on the first strip plate 10.

[0036] During installation, first, a spring is fitted around the outer ring of the upright of the flattened head 12. Then, the upright of the flattened head 12 is inserted into the mounting hole 11 on the first strip 10. Next, the first strip 10 is installed into the first mounting groove 9 with bolts, so that the rounded square of the flattened head 12 is inserted into the first through groove 8, allowing the flattened head 12 to slide along the first through groove 8 and the mounting hole 11.

[0037] Multiple flattened heads 12 are installed into the middle layer plate 2 through the No. 1 mounting slot 9, No. 1 strip plate 10 and mounting hole 11, so as to facilitate the replacement of worn flattened heads 12.

[0038] By separating the middle layer plate 2 from the flattening head 12 through the first strip plate 10, the middle layer plate 2 is prevented from cracking due to the impact force when the flattening head 12 is pressed down. Even if the first strip plate 10 is damaged due to the impact force when the flattening head 12 is pressed down, only the first strip plate 10 needs to be replaced, which effectively reduces the difficulty and loss of maintenance.

[0039] The top plate 4, upper plate 1, middle plate 2 and lower plate 3 are connected by long bolts 5.

[0040] In specific implementation, through holes matching the long bolts 5 are opened at corresponding positions on the top plate 4, upper plate 1, middle plate 2 and lower plate 3. The long bolts 5 are passed through the through holes on the top plate 4, upper plate 1, middle plate 2 and lower plate 3 in sequence to fix and lock the top plate 4, upper plate 1, middle plate 2 and lower plate 3.

[0041] The top plate 4, upper plate 1, middle plate 2, and lower plate 3 are stacked and locked together by multiple long bolts 5, so that the upper plate 1, middle plate 2, lower plate 3, and top plate 4 are connected in series to form an integral structure. The impact force generated by the downward pounding of the flattening head 12 will not only act on the middle plate 2 and lower plate 3, but will also be shared and absorbed by the top plate 4 and upper plate 1, which can effectively reduce the deformation and cracking of the middle plate 2 and the breakage of the long bolts 5. This improves the service life of the middle plate 2 and thus improves the flattening effect of the welding strip.

[0042] Furthermore, since the middle layer plate 2 is clamped and fixed by the upper layer plate 1 and the lower layer plate 3, even if the middle layer plate 2 cracks, it will not immediately break and disperse completely, and can still work for a short time, thus effectively ensuring the continuity of the welding strip flattening operation.

[0043] like Figures 1 to 3 and Figures 8 to 9 As shown, a cylinder 7 is fixedly connected to the end face of the upper plate 1 away from the middle plate 2, and the piston rod of the cylinder 7 can penetrate the upper plate 1.

[0044] In specific implementation, a through hole 18 corresponding to the piston rod of the cylinder 7 is provided in the upper plate 1 below the cylinder 7, and a rubber ring 19 is fixed to the inner wall of the through hole 18. The rubber ring 19 not only limits and guides the piston rod of the multi-rod cylinder 7, preventing the piston rod of the multi-rod cylinder 7 from shaking, but also effectively reduces the vibration when the piston rod of the multi-rod cylinder 7 moves.

[0045] Multiple flattening arms 15 are rotatably mounted on the other side of the end face of the upper plate 1 away from the middle plate 2; the piston rod of the cylinder 7 can drive the flattening arms 15 to swing up and down; a protrusion 16 is fixedly connected to the bottom of the flattening arm 15 away from the cylinder 7; the protrusion 16 can press down the flattening head 12.

[0046] In specific implementation, a stepped groove 30 is provided on the top surface of the upper plate 1, and the side of the stepped groove 30 away from the cylinder 7 is the top groove, while the side closer to the cylinder 7 is the bottom groove; multiple second through grooves 13 are provided in the top groove of the stepped groove 30, and the second through grooves 13 are connected to the first through groove 8; a rotating shaft 14 is rotatably installed in the middle of the top surface of the multiple second through grooves 13; the end of the flattened rotating arm 15 near the protrusion 16 is installed on the outer ring of the rotating shaft 14 through a bearing, and the bottom of the end of the flattened rotating arm 15 near the protrusion 16 is located in the second through groove 13;

[0047] The stepped groove 30 allows the end of the flattening arm 15 near the cylinder 7 to extend into the bottom of the cylinder 7, facilitating connection with the piston rod of the cylinder 7. Furthermore, the stepped groove 30 allows the flattening arm 15 to swing and rotate up and down around the pivot 14, making its structural components more compact and saving space on the upper plate 1.

[0048] When the welding strip is flattened, the piston rod of cylinder 7 moves up and down in a reciprocating motion. When the piston rod of cylinder 7 extends downward, it drives the flattening arm 15 to rotate downward, causing the other end of the flattening arm 15 to rotate around the rotating shaft 14, causing the protrusion 16 to rotate in the second through groove 13. At this time, the flattening head 12 is pushed by the spring, causing the top of the flattening head 12 to extend upward from the inside of the first through groove 8 into the bottom of the second through groove 13. The rotation of the protrusion 16 will press down on the top of the flattening head 12, causing the flattening head 12 to slide downward along the mounting hole 11 of the first strip 10, causing the spring to compress, and the bottom of the flattening head 12 to press down and flatten the welding strip.

[0049] Subsequently, when the piston rod of cylinder 7 returns to its original position, it drives the flattening arm 15 to rotate upward, causing the other end of the flattening arm 15 to rotate around the shaft 14. This causes the protrusion 16 to rotate and return to its original position within the second through groove 13, disengaging the protrusion 16 from the top of the flattening head 12. This causes the spring to return to its original position, pushing the flattening head 12 to slide upward and return to its original position. The bottom of the flattening head 12 then disengages from the flattened welding strip. At this point, the welding strip is conveyed forward one step, the length of which is the length of the welding strip flattened by the flattening head 12. The flattening mechanism continues to repeat the flattening operation until the welding strip is completely flattened, thus achieving the flattening of the welding strip.

[0050] like Figures 8 to 9As shown, the piston rod of the cylinder 7 is fitted with a pair of clamping plates 17 on its outer ring; the two clamping plates 17 are locked together by a plurality of bolts; one of the clamping plates 17 near the flattening rotating arm 15 is hinged to the end of the plurality of flattening rotating arms 15;

[0051] In specific implementation, in this embodiment, the two clamping plates 17 are provided with grooves that match the piston rod of the cylinder 7 on the side that is close to each other; a number of inserts are fixed on one of the clamping plates 17 near the flattening rotating arm 15, and the multiple inserts are alternately arranged with the multiple flattening rotating arms 15, and the multiple inserts and the multiple flattening rotating arms 15 are connected through a hinge rod.

[0052] The piston rod of the cylinder 7 is clamped and fixed by the two clamping plates 17. By adjusting the position between the clamping plates 17 and the piston rod of the cylinder 7, the range of vertical movement of the clamping plates 17 is controlled, the amplitude of vertical swing and rotation of the flattening arm 15 is controlled, the degree of downward pressure of the protrusion 16 on the flattening head 12 is controlled, and thus the striking force of the flattening head 12 is controlled.

[0053] When flattening the welding strip, the piston rod of the multi-rod cylinder 7 moves downwards in a reciprocating motion. Since a pair of clamping plates 17 are clamped and fixed on the outer ring of the piston rod of the multi-rod cylinder 7, the piston rod of the multi-rod cylinder 7 drives the clamping plates 17 to move up and down, which in turn drives the end of the flattening arm 15 that is hinged to the clamping plates 17 to move up and down, thereby realizing the up and down swinging and rotation of the flattening arm 15, and thus realizing the downward movement and flattening work of the flattening head 12.

[0054] like Figure 3 , Figures 8 to 10 As shown, a plurality of pressure plates 21 are bolted to the top surface of the upper plate 1 and above the flattening rotating arm 15; the pressure plates 21 are provided with a plurality of arc-shaped grooves 22 corresponding to the flattening rotating arm 15 on the side near the flattening rotating arm 15.

[0055] In practice, the pressure plate 21 is fixedly installed in the stepped groove 30 of the upper plate 1 by multiple bolts, and the pressure plate 21 is located above the flattening rotating arm 15. The bolts used to fix the pressure plate 21 are located between two adjacent flattening rotating arms 15.

[0056] The pressure plate 21 blocks and limits the rotation of the flattening arm 15, restricting the range of the flattening arm 15's up-and-down swing and rotation, thus preventing the flattening arm 15 from rotating too much and causing the flattening head 12 to strike too hard, which could damage the welding strip.

[0057] By using the arc-shaped groove 22, the up-and-down swing and rotation amplitude of the flattening arm 15 can be controlled and adjusted. That is, by adjusting the installation position of the pressure plate 21, the position of the arc-shaped groove 22 corresponding to the flattening arm 15 can be changed. When it is necessary to increase the rotation amplitude of the flattening arm 15, the pressure plate 21 is installed on the side away from the cylinder 7, so that the position of the arc-shaped groove 22 is closer to the position of the flattening arm 15 near the rotating shaft 14, thereby increasing the up-and-down swing and rotation amplitude of the flattening arm 15. Conversely, the up-and-down swing and rotation amplitude of the flattening arm 15 is reduced.

[0058] Furthermore, the arc-shaped groove 22 can guide the up-and-down swing rotation of the flattening arm 15, reducing the lateral swing of the flattening arm 15.

[0059] like Figure 10 As shown, the pressure plate 21 is provided with a threaded stop 23 at the position corresponding to the arc groove 22. The threaded stop 23 can block the rotation of the flattening arm 15.

[0060] In this embodiment, the threaded stop post 23 is a columnar structure with threads on the outer ring and an internal hexagonal groove at one end.

[0061] In practice, a through threaded hole is made at the position of the arc groove 22 on the pressure plate 21, and the threaded stop 23 is threadedly installed in the threaded hole. A hex wrench is inserted into the internal hexagonal groove of the threaded stop 23, and the hex wrench is rotated to drive the threaded stop 23 to rotate, so that the threaded stop 23 rotates along the threaded hole. The distance between the threaded stop 23 and the flattening arm 15 is adjusted, thereby controlling and adjusting the rotation angle of the flattening arm 15, and thus controlling and adjusting the striking force of the flattening head 12 on the welding strip.

[0062] like Figure 4 and Figure 7 As shown, the middle plate 2 has a plurality of buffer blind holes 20 at the end face of the upper plate 1 and at the position corresponding to the cylinder 7; the piston rod of the cylinder 7 can extend into the buffer blind holes 20.

[0063] In practice, the buffer blind hole 20 corresponds to the through hole 18, and the depth of the buffer blind hole 20 is greater than the length of the piston rod of the cylinder 7 through the upper plate 1.

[0064] The buffer blind hole 20 allows the piston rod of cylinder 7 to perform compound movements, preventing the middle plate 2 from obstructing the movement of the piston rod of cylinder 7. This avoids contact between the piston rod of cylinder 7 and the middle plate 2, and further prevents the upper plate 1 and the middle plate 2 from being squeezed and separated and damaged due to the movement of the piston rod of cylinder 7.

[0065] like Figure 5As shown, the lower plate 3 is close to the end face of the middle plate 2, and a second strip plate 26 is bolted to the position corresponding to the flattening head 12, and the top surface of the second strip plate 26 coincides with the bottom surface of the receiving groove 24; the welding strip can pass through the top surface of the second strip plate 26.

[0066] In specific implementation, a second mounting groove 25 is provided on the end face of the lower layer plate 3 near the middle layer plate 2, and the second mounting groove 25 corresponds to the first mounting groove 9 on the bottom surface of the middle layer plate 2, so that the second strip plate 26 corresponds to the first strip plate 10; the second strip plate 26 is installed in the second mounting groove 25 by bolts, so that the top surface of the second strip plate 26 coincides with the bottom surface of the receiving groove 24;

[0067] When installing the welding strip, the welding strip is passed through the receiving groove 24, so that the welding strip passes between the middle plate 2 and the lower plate 3, and the welding strip is located on the top surface of the second strip plate 26. Furthermore, since the receiving groove 24 limits and guides the welding strip, the welding strip can slide past the bottom of the flattening head 12, which is beneficial to the flattening work of the flattening head 12. Moreover, since the second strip plate 26 lifts the welding strip, it avoids the influence of the receiving groove 24 on the flattening work, thereby improving the flattening effect of the welding strip.

[0068] Furthermore, by setting the second strip 26 to withstand the impact force of the flattened head 12, the impact on the lower plate 3 is reduced, thus reducing the likelihood of damage to the lower plate 3. Even if the second strip 26 is damaged and deformed, only the second strip 26 needs to be replaced, effectively reducing the difficulty and loss of maintenance.

[0069] like Figure 2 As shown, the bottom surface of the lower plate 3 is provided with reinforcing ribs 27 sleeved on the multiple long bolts 5;

[0070] In practice, multiple through holes are provided on the reinforcing rib 27 to match the screws of the long bolts 5; the bottom surfaces of the long bolts 5 are connected by the reinforcing rib 27, ensuring the overall strength and stability of the multiple long bolts 5 when they are tightened.

[0071] like Figures 2 to 7 As shown, positioning posts 29 for positioning and installation are provided on both sides of the adjacent end faces of the top plate 4, upper plate 1, middle plate 2 and lower plate 3.

[0072] In practice, positioning blind holes 28 are provided on both sides of the bottom surface of the top plate 4, both sides of the top and bottom surfaces of the upper plate 1, both sides of the top and bottom surfaces of the middle plate 2, and both sides of the top surface of the lower plate 3. Positioning posts 29 can be inserted into the positioning blind holes 28, and the length of the positioning posts 29 is greater than the depth of one positioning blind hole 28 and less than the depth of two positioning blind holes 28. With the cooperation of the positioning blind holes 28 and the positioning posts 29, it is convenient for workers to quickly and accurately install the top plate 4, the upper plate 1, the middle plate 2 and the lower plate 3.

[0073] like Figure 5 As shown, both ends of the receiving groove 24 are provided with arc-shaped chamfers;

[0074] In specific implementation, arc-shaped chamfers are opened on both sides of the end of the receiving groove 24 to facilitate the insertion of the welding strip into the receiving groove 24. Furthermore, it is beneficial for the welding strip to pass out from the receiving groove 24 at one end, pass the top surface of the second strip 26, and then enter the receiving groove 24 at the other end again; thus facilitating the insertion of the welding strip.

[0075] Working principle: By using the positioning blind holes 28 and positioning posts 29, the top plate 4, upper plate 1, middle plate 2 and lower plate 3 are stacked in sequence. Then, multiple long bolts 5 pass through the upper plate 1, middle plate 2, lower plate 3 and top plate 4, and the upper plate 1, middle plate 2, lower plate 3 and top plate 4 are stacked and locked in place, so that the upper plate 1, middle plate 2, lower plate 3 and top plate 4 are connected in series to form an integral structure.

[0076] When threading the welding strip, multiple welding strips are passed through the receiving groove 24 of the lower plate 3, so that the welding strip passes between the middle plate 2 and the lower plate 3, and the welding strip is located on the top surface of the second strip plate 26. Furthermore, since the receiving groove 24 limits and guides the welding strip, the welding strip can slide past the bottom of the flattened head 12.

[0077] When the welding strip is flattened, the piston rod of cylinder 7 moves up and down in a reciprocating motion. When the piston rod of cylinder 7 extends downward, it drives the flattening arm 15 to rotate downward, causing the other end of the flattening arm 15 to rotate around the rotating shaft 14, causing the protrusion 16 to rotate in the second through groove 13. At this time, the flattening head 12 is pushed by the spring, causing the top of the flattening head 12 to extend upward from the inside of the first through groove 8 into the bottom of the second through groove 13. The rotation of the protrusion 16 will press down on the top of the flattening head 12, causing the flattening head 12 to slide downward along the mounting hole 11 of the first strip 10, causing the spring to compress, and the bottom of the flattening head 12 to press down and flatten the welding strip.

[0078] Subsequently, when the piston rod of cylinder 7 returns to its original position, it drives the flattening arm 15 to rotate upward, causing the other end of the flattening arm 15 to rotate around the shaft 14. This causes the protrusion 16 to rotate and return to its original position within the second through groove 13, disengaging the protrusion 16 from the top of the flattening head 12. This causes the spring to return to its original position, pushing the flattening head 12 to slide upward and return to its original position. The bottom of the flattening head 12 then disengages from the flattened welding strip. At this point, the welding strip is conveyed forward one step, the length of which is the length of the welding strip flattened by the flattening head 12. The flattening mechanism continues to repeat the flattening operation until the welding strip is completely flattened, thus achieving the flattening of the welding strip.

[0079] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A photovoltaic ribbon flattening device, characterized in that: It includes a top plate, an upper plate, a middle plate, and a lower plate stacked from top to bottom; The lower plate has multiple receiving grooves for placing welding strips on its end face near the middle plate; the middle plate has multiple flattening heads that can press down to flatten the welding strips in the receiving grooves. The top plate, upper plate, middle plate, and lower plate are connected by long bolts.

2. The photovoltaic ribbon flattening device according to claim 1, characterized in that: A cylinder is fixedly connected to the end face of the upper plate away from the middle plate, and the piston rod of the cylinder can penetrate the upper plate; multiple flattening arms are rotatably mounted on the other end face of the upper plate away from the middle plate; the piston rod of the cylinder can drive the flattening arms to swing up and down and rotate; a protrusion is fixedly connected to the bottom of the flattening arm away from the cylinder; the protrusion can press down the flattening head.

3. The photovoltaic ribbon flattening device according to claim 2, characterized in that: The piston rod of the cylinder is fitted with a pair of clamping plates on its outer ring; the two clamping plates are locked together by a plurality of bolts; one of the clamping plates near the flattening arm is hinged to the ends of the plurality of flattening arms.

4. The photovoltaic ribbon flattening device according to claim 2, characterized in that: Multiple pressure plates are bolted to the top surface of the upper plate and above the flattening arm; multiple arc-shaped grooves corresponding to the flattening arm are opened on the side of the pressure plate near the flattening arm.

5. A photovoltaic ribbon flattening device according to claim 4, characterized in that: The pressure plate is provided with a threaded stop corresponding to the position of the arc-shaped groove, and the threaded stop can block the rotation of the flattening arm.

6. The photovoltaic ribbon flattening device according to claim 2, characterized in that: The middle layer plate has multiple buffer blind holes on its end face near the upper layer plate and at a position corresponding to the cylinder; the piston rod of the cylinder can extend into the buffer blind holes.

7. The photovoltaic ribbon flattening device according to claim 1, characterized in that: The lower plate is attached to the end face of the middle plate and at the position corresponding to the flattening head. The top surface of the second strip plate coincides with the bottom surface of the receiving groove. The welding strip can pass through the top surface of the second strip plate.

8. The photovoltaic ribbon flattening device according to claim 1, characterized in that: The bottom surface of the lower plate is provided with reinforcing ribs that are fitted onto the multiple long bolts.

9. A photovoltaic ribbon flattening device according to claim 1, characterized in that: Positioning posts for positioning and installation are provided on both sides of the adjacent end faces of the top plate, upper plate, middle plate and lower plate.

10. A photovoltaic ribbon flattening device according to claim 7, characterized in that: Both ends of the receiving groove are provided with arc-shaped chamfers.

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