Solder strip flattening mechanism

Abstract

The utility model provides a welding strip flattening mechanism which comprises a machine frame, a power system arranged on the machine frame, a sliding block connected with the power system and driven by the power system to do linear motion in the horizontal direction, and a flattening system arranged on the machine frame and located below the sliding block. The bottom of the sliding block is provided with a wavy structure in the length direction of the sliding block. The flattening system comprises a flattening shaft, a flattening head and a bearing bottom plate, the flattening shaft is slidably arranged on the rack in the vertical direction, the flattening head is located at the bottom of the flattening shaft, the bearing bottom plate is arranged below the flattening head, and a welding strip is arranged between the flattening head and the bearing bottom plate; the sliding block is driven by the power system to do linear motion in the horizontal direction, so that the flattening head is close to or away from the bearing bottom plate, and flattening of the welding strip is achieved. According to the utility model, one power source is used for driving the plurality of flattening shafts to work, so that the welding strip is prevented from being missed to be patted, and the problem of batched battery piece cracking is further avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic welding strip manufacturing technical field, concretely relates to a kind of welding strip flattening mechanism. BACKGROUND

[0002] Photovoltaic welding strip plays an extremely important role in photovoltaic module power generation process. Photovoltaic cells are connected in series through welding strip, ensuring that the energy of different cells is effectively transmitted. Most existing welding strips use a flattening process at the gap. Current flattening technology mostly uses a multi-cylinder direct-flushing flattening mechanism. Each welding strip corresponds to a cylinder. However, the existing multi-cylinder direct-flushing flattening mechanism has the following shortcomings:

[0003] First, if one of the multiple cylinders fails, the corresponding welding strip cannot be flattened, directly causing the corresponding cell to crack. If the cylinder failure is not detected in time, it may cause a batch of cells to crack.

[0004] Second, the low synchronization accuracy between multiple cylinders leads to a large thickness dispersion of the flattened welding strip, resulting in high cell cracking rates.

[0005] Third, the traditional straight-line flattening process results in a flat and straight flattening contact point, causing batch EL (electroluminescence) problems in the cells.

[0006] Fourth, the traditional straight-line flattening process cannot ensure the stability of the flattening thickness. SUMMARY

[0007] Therefore, the present utility model provides a welding strip flattening mechanism to solve one or more problems in the background technology.

[0008] To solve the above technical problems, the present utility model provides a welding strip flattening mechanism, which includes a rack, a power system arranged on the rack, a slider connected to the power system and driven by the power system to move linearly in the horizontal direction, and a flattening system arranged on the rack below the slider.

[0009] The bottom of the slider is provided with a wave-shaped structure along its length direction, which has a concave valley part upward and a convex peak part downward.

[0010] The flattening system includes a flattening shaft slidingly arranged on the rack in the up-down direction, a flattening head at the bottom of the flattening shaft, and a bearing bottom plate arranged below the flattening head. The welding strip is arranged between the flattening head and the bearing bottom plate.

[0011] The flattening shaft has a first working position in which the top of the flattening shaft is in contact with the crest, and a second working position in which the top of the flattening shaft is in contact with the trough, the slider is driven to move linearly in the horizontal direction by the power system, so that the flattening shaft switches between the first working position and the second working position, and the flattening head is close to or away from the bearing bottom plate, thereby realizing the flattening of the welding strip. In this scheme, the slider is driven to slide in the horizontal direction by the power system, and the horizontal power is converted into vertical power to ensure the stability of the flattening thickness.

[0012] In the welding strip flattening mechanism as described above, optionally, the wave-shaped structure has a plurality of crests and a plurality of troughs, the crests and the troughs are arranged alternately along the length direction of the slider, the flattening system is configured with a plurality of flattening shafts, the plurality of flattening shafts are distributed along the length direction of the slider, each flattening shaft is configured with a flattening head, and the flattening system is configured with a bearing bottom plate. In this scheme, by setting multiple flattening shafts, a power source is used to drive multiple flattening shafts to work, thereby avoiding the problem of welding strip missing flattening caused by single cylinder failure of traditional multi-cylinder straight impact type flattening mechanism, and further avoiding the problem of batch battery piece cracking.

[0013] In the welding strip flattening mechanism as described above, optionally, the bottom surface of each crest and the bottom surface of each trough are arc surfaces, and adjacent crests and troughs are smoothly transitioned.

[0014] In the welding strip flattening mechanism as described above, optionally, the power system includes a ball screw installed on the upper part of the rack and a power unit connected to one end of the ball screw, the ball screw includes a screw connected to the power unit and a nut screwed with the screw, the nut and the slider are fixedly arranged opposite to each other, and the power unit drives the screw to rotate, thereby driving the nut to drive the slider to slide horizontally along the length direction of the screw.

[0015] In the welding strip flattening mechanism as described above, optionally, a slide bar parallel to the screw is installed on the upper part of the rack, the slider is further connected to the slide bar in a sliding manner, and the screw drives the nut to drive the slider to slide horizontally along the length direction of the slide bar when the screw rotates.

[0016] Optionally, the power unit is a driving motor, and an output shaft of the driving motor is connected to the end of the screw.

[0017] In the welding strip flattening mechanism as described above, optionally, the top of the flattening shaft is provided with a transmission wheel connected to the flattening shaft in a rolling manner through a rotating shaft, and the transmission wheel is in contact with the wave-shaped structure of the slider.

[0018] In the welding strip flattening mechanism as described above, optionally, the flattening system further comprises a resilient reset member arranged between the flattening shaft and the frame, when the flattening shaft is in the first working position and the flattening shaft is in contact with the wave crest, the flattening shaft presses the resilient reset member to deform and store energy, when the power system drives the slider to slide to make the flattening shaft away from the wave crest, the elastic force of the resilient reset member is released to push the flattening shaft to slide upward to the second working position.

[0019] In the welding strip flattening mechanism as described above, optionally, the resilient reset member is a spring, the flattening shaft comprises a flattening shaft body slidingly arranged on the frame and a limiting portion formed on the top of the flattening shaft body, the spring is sleeved on the flattening shaft body, and the upper end of the spring abuts against the limiting portion, and the lower end of the spring abuts against the frame.

[0020] In the welding strip flattening mechanism as described above, optionally, the flattening head bottom is respectively provided with a first plane, a second plane and a first inclined plane, the first plane and the second plane have a height difference, and the first plane and the second plane are transitioned through the first inclined plane;

[0021] The bearing bottom plate top is respectively provided with a third plane matched with the first plane, a fourth plane matched with the second plane and a second inclined plane matched with the first inclined plane, the third plane and the fourth plane are transitioned through the second inclined plane, when the flattening shaft is in the first working position, the flattening head and the bearing bottom plate cooperate to flatten the welding strip. In this scheme, by cooperating the flattening head and the bearing bottom plate with a height difference, it is ensured that the height difference of the flattened welding strip meets the technical requirements of the battery piece layout.

[0022] In the welding strip flattening mechanism as described above, optionally, the frame comprises a base, first and second support plates arranged in the vertical direction at opposite ends of the base, a cross beam connected between the first and second support plates, and first and second side plates arranged in the vertical direction at opposite sides of the base, the power system is arranged on the top of the first and second support plates, and the flattening shaft is slidingly arranged on the cross beam;

[0023] The first and second support plates, the first and second side plates and the base surround a receiving cavity, the bearing bottom plate is mounted on the base and located in the receiving cavity;

[0024] The first and second side plates are respectively provided with first and second positionally opposite limiting grooves, and the welding strip is arranged through the first and second limiting grooves.

[0025] Optionally, the material of the flattening head and the bearing base plate is ceramic material.

[0026] The welding strip flattening mechanism of the utility model, through the power system drive slide block along the horizontal direction sliding, make the flattening shaft switch between the first working position and the second working position, realize the flattening of the welding strip, convert the horizontal power into the vertical power and guarantee the stability of the flattening thickness. Further, through setting multiple flattening shafts, utilize one power source to drive multiple flattening shafts to work, thereby avoid the single cylinder fault of the traditional multiple cylinder straight impact type flattening mechanism to cause the welding strip missing flattening, and further avoid the batch battery piece cracking problem. BRIEF DESCRIPTION OF DRAWINGS

[0027] The disclosure of the utility model will be more apparent with reference to the drawings. It should be understood that the drawings are only for the purpose of illustration, and are not intended to limit the scope of protection of the utility model. In the drawings:

[0028] Figure 1 It is the welding strip flattening mechanism three-dimensional structure schematic view of an embodiment of the utility model;

[0029] Figure 2 It is the welding strip flattening mechanism main view structure schematic view of an embodiment of the utility model;

[0030] Figure 3 It is the welding strip flattening mechanism plan view structure schematic view of an embodiment of the utility model;

[0031] Figure 4 It is the welding strip flattening mechanism left view structure schematic view of an embodiment of the utility model;

[0032] Figure 5 It is the welding strip flattening mechanism rack and bearing base plate cooperation three-dimensional structure schematic view of an embodiment of the utility model;

[0033] Figure 6 It is the welding strip flattening mechanism rack main view structure schematic view of an embodiment of the utility model;

[0034] Figure 7 It is the welding strip flattening mechanism power system and slide block cooperation three-dimensional structure schematic view of an embodiment of the utility model;

[0035] Figure 8 It is the welding strip flattening mechanism power system and slide block cooperation main view structure schematic view of an embodiment of the utility model;

[0036] Figure 9 It is the welding strip flattening mechanism flattening system side view structure schematic view of an embodiment of the utility model;

[0037] Figure 10The side view structural schematic diagram of the flattening system and the bearing bottom plate of the welding strip flattening mechanism of an embodiment of the present utility model;

[0038] Figure 11 The welding strip structure schematic diagram obtained by flattening the welding strip by the welding strip flattening mechanism of the embodiment of the present utility model;

[0039] Reference signs: 100 - rack; 300 - sliding block; 500 - welding strip; 110 - base; 120 - cross beam; 130 - first support plate; 140 - second support plate; 150 - first side plate, 160 - second side plate; 151 - first limiting groove; 161 - second limiting groove; 210 - screw rod; 220 - power unit; 310 - sliding rod; 311 - wave structure; 312 - wave trough part; 313 - wave crest part; 410 - flattening shaft; 420 - flattening head; 430 - bearing bottom plate; 440 - elastic reset member; 450 - transmission wheel; 411 - flattening shaft body; 412 - limiting part; 421 - first plane; 422 - second plane; 423 - first inclined plane; 431 - third plane; 432 - fourth plane; 433 - second inclined plane; 511 - first flat section; 512 - second flat section; 513 - transition section; 514 - first main section; 515 - second main section. DETAILED DESCRIPTION

[0040] With reference to the drawings and specific embodiments, the structure, working principle, characteristics and advantages of the photovoltaic welding strip manufacturing device of the present utility model will be described in an exemplary manner below, however, all the descriptions shall not be used to form any limitation on the present utility model.

[0041] In the description of the present utility model, it needs to be explained that, unless explicitly defined and limited, the terms "mounting", "connection" and "connecting" shall be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0042] In addition, for any single technical feature described or implied in the embodiments described herein or any single technical feature realized or implied in the drawings, the present utility model still allows any combination or deletion between these technical features (or their equivalents) without any technical obstacles, so it is believed that more embodiments according to the present utility model are also within the scope of the description herein.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0044] Existing welding strip flattening technologies mostly employ multi-cylinder direct-impact flattening mechanisms, with one cylinder corresponding to each welding strip. The welding strip flattening mechanism provided in this embodiment replaces the multi-cylinder direct-impact flattening mechanism by using a power system to drive a slider to slide horizontally, thereby driving the flattening shaft to slide vertically up and down.

[0045] like Figures 1 to 5 The photovoltaic ribbon flattening mechanism shown includes a frame 100, a power system mounted on the frame, a slider 300 connected to and driven by the power system to move linearly in the horizontal direction, and a flattening system mounted on the frame 100 and located below the slider 300. The frame 100 includes a base 110, a first support plate 130 and a second support plate 140 respectively mounted vertically at opposite ends of the base 110, a crossbeam 120 connecting the first support plate 130 and the second support plate 140, and a first side plate 150 and a second side plate 160 respectively mounted vertically on opposite sides of the base 110. Figure 1 Based on the view, the first support plate 130 and the second support plate 140 are located on the left and right sides of the base 110, and the first side plate 150 and the second side plate 160 are located on the front and rear sides of the base 110. The first support plate 130, the second support plate 140, the first side plate 150, the second side plate 160 and the base 110 form a receiving cavity.

[0046] As shown in the figure, the top ends of the first support plate 130 and the second support plate 140 on both sides of the frame 100 are respectively provided with two pairs of mounting holes in opposite positions. The aforementioned power system includes a ball screw and a power unit 220 connected to one end of the ball screw. In this example, the power unit 220 is a drive motor mounted on the second support plate 140. The aforementioned ball screw includes a screw 210 that is mounted on the first support plate 130 and the second support plate 140 through the aforementioned mounting holes and extends horizontally, and a nut (not shown in the figure) that is threaded onto the screw 210. One end of the screw 210 is fixedly connected to the output shaft of the drive motor. The slider 300 is fixedly set relative to the nut, and the screw 210 is driven to rotate by the drive motor, thereby driving the nut to drive the slider 300 to slide horizontally along the length direction of the screw 210.

[0047] The top end of the first support plate 130 and the second support plate 140 is also provided with a slide rod 310 parallel to the screw rod 210 through the aforementioned mounting hole, and the slide block 300 is also slidably arranged on the slide rod 310, and the slide block 300 is also driven by the nut to slide horizontally along the length direction of the slide rod 310.

[0048] By Figure 2 It can be seen that the bottom of the slide block 300 is provided with a wave-shaped structure 311 along the length direction, and a flattening system is arranged between the wave-shaped structure 311 and the base 110 of the rack 100. The flattening system includes a flattening shaft 410 slidably arranged on the cross beam 120 in the vertical direction, a flattening head 420 fixedly connected to the bottom of the flattening shaft 410, and a bearing bottom plate 430 arranged in the accommodating cavity and located below the flattening head 420, and the welding strip 500 is arranged between the flattening head 420 and the bearing bottom plate 430. The flattening shaft 410 has a first working position in which the top of the flattening shaft 410 is in contact with the wave crest 313, and a second working position in which the top of the flattening shaft 410 is in contact with the wave trough 312. The screw rod 210 is driven by the power unit 220 to rotate periodically clockwise and counterclockwise alternately, thereby driving the slide block 300 to move linearly in the horizontal direction, so that the flattening shaft 410 continuously switches between the first working position and the second working position, thereby driving the flattening head 420 to approach or move away from the bearing bottom plate 430, and realizing flattening of the welding strip 500.

[0049] Further, as Figure 2 shown, the wave-shaped structure 311 below the slide block 300 is "S" shaped, and the wave-shaped structure 311 has a plurality of upwardly recessed wave troughs 312 and a plurality of downwardly protruding wave crests 313. The wave crests 313 and the wave troughs 312 are alternately arranged along the length direction of the slide block, and the flattening shaft 410 has a plurality of flattening heads 420, each of which is arranged on a flattening head 420. All the flattening heads 420 cooperate with the same bearing bottom plate 430 to realize flattening of the welding strip 500.

[0050] Further, as Figures 2 to 4 shown, the first support plate 130 and the second support plate 140 of the rack 100 are also provided with positionally opposite mounting holes, and the cross beam 120 is mounted between the first support plate 130 and the second support plate 140 in the horizontal direction through the mounting holes. The cross beam 120 has a plurality of through holes, and the number of the through holes corresponds to the number of the flattening shafts 410. The plurality of flattening shafts 410 are slidably mounted on the cross beam 120 in the vertical direction through the through holes.

[0051] Further, as Figure 9As shown, the top of each flattening shaft 410 is provided with a transmission wheel 450 connected with the flattening shaft 410 through a rotating shaft, the flattening shaft 410 is in contact with the wave-shaped structure 311 through the transmission wheel 450, the sliding friction is converted into rolling friction through the transmission wheel 450, and the friction between the flattening shaft 410 and the wave-shaped structure 311 is reduced. Each flattening shaft 410 includes a flattening shaft body 411 slidingly arranged on the cross beam 120 and a limiting portion 412 formed at the top of the flattening shaft body 411, and an elastic reset member 440 is sleeved on the flattening shaft body 411, in some embodiments, the elastic reset member 440 is a spring, the upper end of the elastic reset member 440 abuts against the limiting portion 412, and the lower end of the elastic reset member 440 abuts against the cross beam 120. When the flattening shaft 410 is located at the first working position, the transmission wheel 450 is in contact with the wave crest portion 313, the flattening shaft 410 presses downward the elastic reset member 440 so that the elastic reset member 440 is deformed and stores energy, when the transmission wheel 450 moves away from the wave crest portion 313, the elastic force of the elastic reset member 440 is released, the flattening shaft 410 is pushed to slide upward and drives the flattening shaft to return to the second working position, and the flattening shaft 410 is reset.

[0052] Further, as shown in Figure 10 The bottom of the flattening head 420 is respectively provided with a first plane 421, a second plane 422 and a first inclined plane 423, the first plane 421 and the second plane 422 have a height difference, the first plane 421 and the second plane 422 are transitioned through the first inclined plane 423, and the first plane 421 and the second plane 422 both extend along the horizontal direction and are parallel to each other. The top of the bearing bottom plate 430 is respectively provided with a third plane 431 matched with the first plane 421, a fourth plane 432 matched with the second plane 422 and a second inclined plane 433 matched with the first inclined plane 423, the third plane 431 and the fourth plane 432 are transitioned through the second inclined plane 433, and the third plane 431 and the fourth plane 432 also extend along the horizontal direction and are parallel to each other, when the flattening shaft 410 is located at the first working position, the flattening head 420 is close to the bearing bottom plate 430 and cooperates with the bearing bottom plate 430 to flatten the solder strip.

[0053] Further, as shown in Figure 11As shown, the flattened solder strip 500 is a "Z" shaped fold line structure with height difference, specifically, the flattened solder strip 500 includes a first main body segment 514, a first flat segment 511 formed by the end of the first main body segment 514, a transition segment 513 formed by the end of the first flat segment 511 being bent and extended, a second flat segment 512 formed by the end of the transition segment 513 being bent and extended, and a second main body segment 515 formed by the end of the second flat segment 512 being extended, the first flat segment 511 and the second flat segment 512 are parallel to each other and have a height difference, wherein the first flat segment 511, the transition segment 513 and the second flat segment 512 are formed after the solder strip is flattened by the solder strip flattening mechanism, and the first main body segment 514 and the second main body segment 515 remain the original solder strip shape.

[0054] When two battery pieces are connected in series by the solder strip to form a battery pack, the outer end of the first main body segment 514 is connected to the upper surface of the first photovoltaic battery piece, the outer end of the second main body segment 515 is connected to the lower surface of the second photovoltaic battery piece, and the gap between the two photovoltaic battery pieces is transitioned by the flattened first flat segment 511, the transition segment and the second flat segment 512. Due to the height difference between the first flat segment 511 and the second flat segment 512, after the two photovoltaic battery pieces are flattened, it can be ensured that the two photovoltaic battery pieces are at the same horizontal height, preventing the lamination of the pieces and reducing the problem of batch EL failure of the battery pieces.

[0055] Further, as shown in Figures 5 to 6 The first side plate 150 and the second side plate 160 are respectively provided with first and second limiting grooves 151 and 161 opposite to each other, and the solder strip 500 passes through the first and second limiting grooves 151 and 161, the first and second limiting grooves 151 and 161 are "Y" shaped structures with the notch facing upward, specifically, the upper part of the "Y" shaped structure is "V" shaped structure with the upper part wider than the lower part and the two side walls inclined outward, and the lower part is "U" shaped structure with the two side arms parallel, and the "V" shaped structure and the "U" shaped structure are smoothly transitioned, wherein the "V" shaped structure is wider at the upper part than at the lower part, facilitating the placement and removal of the solder strip, and the "U" shaped structure can provide stable clamping force to fix the position of the solder strip and prevent the solder strip from moving during flattening.

[0056] Further, as shown in Figure 10 The flattening head 420 and the bearing bottom plate 430 are both made of ceramic material, which can improve the precision and service life of the solder strip flattening mechanism.

[0057] The welding strip flattening mechanism of the embodiment of the utility model, through driving multiple flattening shafts to work synchronously by a power system, thereby avoiding the welding strip missing flattening caused by single cylinder fault of traditional multiple cylinder straight impact type flattening mechanism, further avoiding the problem of batch battery piece cracking, and also avoiding the problem of too large welding strip flattening thickness dispersion and unevenness caused by low synchronization precision between traditional multiple cylinders, and high battery piece hidden cracking proportion; through the cooperation of the flattening head with the "Z" shaped structure with height difference and the bearing bottom plate, the welding strip is flattened into a "Z" shaped fold line structure with height difference, reducing the batch EL problem of the battery piece; through converting the horizontal power into vertical power to ensure the stability of the flattening thickness.

[0058] The technical scope of the utility model is not limited to the content in the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical thought of the utility model, and these modifications and changes shall all belong to the scope of the utility model.

Claims

1. A ribbon flattening mechanism, characterized by, The machine frame (100), the power system arranged on the machine frame (100), the slider (300) connected with the power system and driven by the power system to move linearly in the horizontal direction, and the flattening system arranged on the machine frame (100) and below the slider (300); The bottom of the slider (300) is provided with a wave-shaped structure (311) along the length direction, the wave-shaped structure (311) has a wave valley part (312) concave upward and a wave crest part (313) convex downward; The flattening system includes a flattening shaft (410) slidingly arranged on the machine frame (100) in the up-down direction, a flattening head (420) at the bottom of the flattening shaft (410), and a bearing bottom plate (430) arranged below the flattening head (420), and a solder strip (500) arranged between the flattening head (420) and the bearing bottom plate (430); The flattening shaft (410) has a first working position where the top of the flattening shaft (410) is in contact with the wave crest part (313), and a second working position where the top of the flattening shaft (410) is in contact with the wave valley part (312), the slider (300) is driven by the power system to move linearly in the horizontal direction, so that the flattening shaft (410) switches between the first working position and the second working position, thereby making the flattening head (420) approach or move away from the bearing bottom plate (430), and realizing flattening of the solder strip.

2. The solder strip flattening mechanism of claim 1, wherein, The wave-shaped structure (311) has a plurality of wave crest parts (313) and a plurality of wave valley parts (312), the wave crest parts (313) and the wave valley parts (312) are alternately arranged along the length direction of the slider (300), the flattening system is provided with a plurality of flattening shafts (410), the plurality of flattening shafts (410) are sequentially and spacedly arranged along the length direction of the slider (300), each flattening shaft (410) is correspondingly provided with a flattening head (420), and the flattening system is provided with a bearing bottom plate (430).

3. The solder strip flattening mechanism of claim 2, wherein, The bottom surface of each wave crest part (313) and the bottom surface of each wave valley part (312) are arc surfaces, and adjacent wave crest parts (313) and wave valley parts (312) are smoothly transitioned.

4. The solder strip flattening mechanism of claim 1, wherein, The power system includes a ball screw installed on the upper part of the machine frame (100) and a power unit (220) connected with one end of the ball screw, the ball screw includes a screw rod (210) connected with the power unit (220) and a nut screwed with the screw rod (210), the nut and the slider (300) are fixedly arranged in opposite directions, and the power unit (220) drives the screw rod (210) to rotate, thereby driving the nut to drive the slider (300) to slide horizontally along the length direction of the screw rod (210).

5. The solder strip flattening mechanism of claim 4, wherein, The upper part of the rack (100) is provided with a sliding rod (310) parallel to the screw rod (210), the sliding block (300) is also in sliding connection with the sliding rod (310), and the screw rod (210) drives the nut to drive the sliding block (300) to slide horizontally along the length direction of the sliding rod (310) when the screw rod (210) rotates; and / or, The power unit (220) is a driving motor, and the output shaft of the driving motor is connected with the end of the screw rod (210).

6. The solder strip flattening mechanism of claim 1, wherein, The top of the flattening shaft (410) is provided with a transmission wheel (450) in rolling connection with the flattening shaft (410) through a rotating shaft, and the transmission wheel (450) is in contact with the wave-shaped structure (311) of the sliding block (300).

7. The solder strip flattening mechanism of claim 1, wherein, The flattening system further comprises an elastic reset member (440) arranged between the flattening shaft (410) and the rack (100), when the flattening shaft (410) is located at the first working position and the flattening shaft (410) is in contact with the wave crest (313), the flattening shaft (410) presses the elastic reset member (440) to make the elastic reset member (440) deform and store energy, when the power system drives the sliding block (300) to slide to make the flattening shaft (410) away from the wave crest (313), the elastic force of the elastic reset member (440) is released to push the flattening shaft (410) to slide upward to return to the second working position.

8. The solder strip flattening mechanism of claim 7, wherein, The elastic reset member (440) is a spring, the flattening shaft (410) comprises a flattening shaft body (411) slidingly arranged on the rack (100) and a limiting portion (412) formed at the top of the flattening shaft body (411), the spring is sleeved on the flattening shaft body (411), and the upper end of the spring abuts against the limiting portion (412), and the lower end of the spring abuts against the rack (100).

9. The solder strip flattening mechanism of claim 1, wherein, The bottom of the flattening head (420) is respectively provided with a first plane (421), a second plane (422) and a first inclined plane (423), the first plane (421) and the second plane (422) have a height difference, and the first plane (421) and the second plane (422) are transitioned through the first inclined plane (423); The top of the bearing bottom plate (430) is respectively provided with a third plane (431) matched with the first plane (421), a fourth plane (432) matched with the second plane (422) and a second inclined plane (433) matched with the first inclined plane (423), the third plane (431) and the fourth plane (432) are transitioned through the second inclined plane (433), and when the flattening shaft (410) is located at the first working position, the flattening head (420) and the bearing bottom plate (430) cooperate to flatten the welding strip.

10. The solder strip flattening mechanism of claim 1, wherein, The rack (100) comprises a base (110), a first support plate (130) and a second support plate (140) arranged respectively at opposite ends of the base (110) in the vertical direction, a cross beam (120) connected between the first support plate (130) and the second support plate (140), and a first side plate (150) and a second side plate (160) arranged respectively at opposite sides of the base (110) in the vertical direction, the power system is arranged on top of the first support plate (130) and the second support plate (140), and the flattening shaft (410) is slidingly arranged on the cross beam (120); The first support plate (130), the second support plate (140), the first side plate (150), the second side plate (160) and the base (110) form a containing cavity therebetween, the bearing bottom plate (430) is mounted on the base (110) and located in the containing cavity; The first side plate (150) and the second side plate (160) are respectively provided with a first limiting groove (151) and a second limiting groove (161) opposite to each other, and the welding strip (500) is arranged through the first limiting groove (151) and the second limiting groove (161); and / or, The material of the flattening head (420) and the bearing bottom plate (430) is ceramic material.

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