Series welding machine

Abstract

The utility model relates to the technical field of photovoltaic stacked gates, in particular to a series welding machine. The series welding machine comprises a cutting mechanism and a positioning mechanism, the cutting mechanism comprises a driving assembly and a cutting blade, and the driving assembly is used for driving the cutting blade to cut a welding strip; the positioning mechanism is used for intermittently positioning the welding strip according to the periodic cutting movement of the cutting blade; wherein in each periodic cutting motion, the welding strip is cut by the cutting blade after being positioned by the positioning mechanism. In the process that the driving assembly drives the cutting blade to cut the welding strip, the positioning mechanism is used for intermittently positioning the welding strip according to the periodic cutting motion of the cutting blade, so that the conditions of mechanical vibration when the welding strip is cut off and radial displacement of the welding strip caused by deformation after slight stretching of the welding strip are reduced, and the welding strip cutting efficiency is improved. And the production efficiency of the battery string is further improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic grid stacking technology, and in particular to a string welding machine. Background Technology

[0002] In the photovoltaic cell production process, there is a step where solar cells and solder strips are stacked and welded together using cell stringing equipment to form a cell string. During the stacking of solar cells and solder strips, the solder strips first need to be processed by cutting them into groups of segments that can be stacked with the solar cells.

[0003] In related technologies, when cutting the solder strip, it is first necessary to stretch the solder strip and then cut it. During the solder strip cutting process, the solder strip is prone to deformation and displacement, which may prevent subsequent solder strips from being picked up by the grippers or from being correctly placed in the carrier. This may cause the stacking position between the subsequent solder strips and the battery cells to deviate, affecting the production quality of the battery string and resulting in low production efficiency.

[0004] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0005] This application provides a string welding machine to solve or alleviate one or more of the technical problems mentioned above.

[0006] This application provides a string welding machine, including:

[0007] A cutting mechanism, comprising a drive assembly and a cutting blade, wherein the drive assembly is used to drive the cutting blade to cut the welding strip;

[0008] A positioning mechanism is used to intermittently position the welding strip according to the periodic cutting motion of the cutting blade;

[0009] In each periodic cutting motion, the welding strip is positioned by the positioning mechanism and then cut by the cutting blade.

[0010] Optionally, the drive assembly includes a drive cylinder and a mounting plate, with the cutting blade disposed on the mounting plate; the drive cylinder drives the mounting plate to move the cutting blade closer to or away from the welding strip.

[0011] Optionally, the positioning mechanism includes a positioning component and a positioning platform, wherein the positioning platform is used to place the welding strip, and the positioning component is used to position the welding strip on the positioning platform.

[0012] Optionally, the positioning assembly includes a first telescopic member and a first positioning rod, the first telescopic member being disposed on the mounting plate; one end of the first positioning rod is connected to the first telescopic member, and the other end can be used to press the welding strip; the positioning table includes a first positioning block, the first positioning block being correspondingly disposed with the first positioning rod, the welding strip being located between the first positioning block and the first positioning rod; and the sum of the lengths of the first telescopic member and the first positioning rod is greater than the length of the cutting blade; and / or

[0013] The positioning assembly includes a second telescopic member and a second positioning rod, the second telescopic member being disposed on the mounting plate; one end of the second positioning rod is connected to the second telescopic member, and the other end can be used to press the welding strip; the positioning platform includes a second positioning block, the second positioning block being disposed correspondingly to the second positioning rod, the welding strip being located between the second positioning block and the second positioning rod; and the sum of the lengths of the second telescopic member and the second positioning rod is greater than the length of the cutting blade.

[0014] Optionally, the first positioning block and / or the second positioning block are provided with a receiving positioning groove for receiving the solder strip;

[0015] The accommodating positioning groove is adapted to the shape of the welding strip.

[0016] Optionally, the shape of the receiving positioning groove is one of an inverted trapezoid, rectangle, U-shape, or inverted triangle.

[0017] Optionally, a first pressure block is provided at the end of the first positioning rod away from the first telescopic member, and the area of ​​the facing surface of the first pressure block toward the first positioning block is greater than the cross-sectional area of ​​the first positioning rod; and / or

[0018] A second pressure block is provided at the end of the second positioning rod away from the second telescopic member, and the area of ​​the facing surface of the second pressure block toward the second positioning block is greater than the cross-sectional area of ​​the second positioning rod.

[0019] Optionally, the first telescopic member and / or the second telescopic member are springs.

[0020] Optionally, the mounting plate is provided with a first guide cylinder having a hollow structure, the first telescopic member is disposed in the first guide cylinder, a portion of the first positioning rod is located in the first guide cylinder and connected to the first telescopic member, and the length of the first guide cylinder is less than the length of the cutting blade; and / or

[0021] The mounting plate is provided with a second guide cylinder with a hollow structure, the second telescopic member is disposed in the second guide cylinder, part of the second positioning rod is located in the second guide cylinder and connected to the second telescopic member, and the length of the second guide cylinder is less than the length of the cutting blade.

[0022] Optionally, it also includes:

[0023] The assembly includes a clamping mechanism, a transport mechanism, a gripper mechanism, and a platform. The transport mechanism is used to transport the welding strip to the cutting mechanism. The welding strip is clamped and fixed by the clamping mechanism and the gripper mechanism. The cutting mechanism is used to cut the welding strip. The gripper mechanism is used to place the cut welding strip onto the platform.

[0024] The gripper mechanism includes a gripper cylinder and grippers. The gripper cylinder drives the grippers to reciprocate, and the grippers clamp or release the welding strip.

[0025] Optionally, an auxiliary blade is also provided at the corresponding position of the cutting blade, and the cutting blade cuts the welding strip by contacting the auxiliary blade.

[0026] The embodiments of this application employing the above-described technical solution may have the following advantages:

[0027] During the process of the drive component driving the cutting blade to cut the solder strip, the positioning mechanism is used to intermittently position the solder strip according to the periodic cutting motion of the cutting blade, thereby reducing the mechanical vibration when the solder strip is cut and the radial displacement of the solder strip caused by slight stretching and deformation, which further improves the production efficiency of battery strings; in addition, the positioning mechanism and the cutting blade have a high degree of integration and their spatial movements are well coordinated, which can work together to achieve the positioning and cutting of the solder strip, greatly improving the space utilization of the equipment. Attached Figure Description

[0028] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0029] Figure 1 This is a partial structural schematic diagram of the string welding machine provided in the embodiments of this application.

[0030] Figure 2 This is a top view of the first positioning block of the string welding machine provided in the embodiments of this application.

[0031] Figure 3This is a top view of the second positioning block of the string welding machine provided in the embodiments of this application.

[0032] Figure 4 This is a side view of the first positioning block of the string welding machine provided in the embodiments of this application.

[0033] Figure 5 This is a side view of the second positioning block of the string welding machine provided in the embodiments of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Cutting mechanism; 11. Drive cylinder; 12. Mounting plate; 13. Cutting blade; 14. Auxiliary blade; 2. Positioning mechanism; 21. First telescopic component; 22. First positioning rod; 23. First pressure block; 24. Second telescopic component; 25. Second positioning rod; 26. Second pressure block; 27. First positioning block; 28. Second positioning block; 29. ​​Receiving positioning groove; 3. Welding strip; 4. Pressing mechanism; 41. Upper pressure block; 42. Lower pressure block; 5. Transport mechanism; 6. Gripper mechanism; 61. Gripper cylinder; 62. Gripper; 7. Platform. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. The application will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. It should be understood that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0039] like Figures 1-5 As shown, embodiments of this application can provide a string welding machine, which may include:

[0040] The cutting mechanism 1 includes a drive assembly and a cutting blade 13. The drive assembly is used to drive the cutting blade 13 to cut the welding strip 3.

[0041] Positioning mechanism 2 is used to intermittently position the welding strip 3 according to the periodic cutting motion of the cutting blade 13;

[0042] In each periodic cutting motion, the welding strip 3 is positioned by the positioning mechanism 2 and then cut by the cutting blade 13.

[0043] The frame (not shown in the figure), the cutting mechanism 1 and the positioning mechanism 2 are both mounted on the frame, and the cutting mechanism 1 and the positioning mechanism 2 are integrated together, which effectively improves the space utilization. In this embodiment, the cutting blade 13 has a wedge-shaped tip to improve the cutting efficiency of the welding strip 3.

[0044] The positioning mechanism 2 is used to intermittently position the welding strip 3 according to the periodic cutting motion of the cutting blade 13. It should be noted that after the cutting blade 13 has finished cutting the welding strip 3, as the cutting blade 13 moves away from the welding strip 3, the positioning mechanism 2 continues to position the cut welding strip 3 until the cutting blade 13 moves away from the cut welding strip 3 to a certain distance, at which point the positioning mechanism 2 can unlock its positioning function on the cut welding strip 3.

[0045] In this embodiment, during the process of the drive component driving the cutting blade to cut the welding strip, the positioning mechanism 2 is used to intermittently position the welding strip 3 according to the periodic cutting motion of the cutting blade 13, thereby reducing the mechanical vibration when the welding strip 3 is cut and the radial displacement of the welding strip caused by slight stretching and deformation, which further improves the production efficiency of the battery string; in addition, the positioning mechanism 2 and the cutting blade 13 have a high degree of integration and their spatial movements are well coordinated, which can work together to achieve the positioning and cutting of the welding strip, greatly improving the space utilization of the equipment.

[0046] In an optional embodiment, the driving assembly includes a driving cylinder 11 and a mounting plate 12, with a cutting blade 13 disposed on the mounting plate 12. The driving cylinder 11 drives the cutting blade 13 to move closer to or away from the welding strip 3 by driving the mounting plate 12. The driving cylinder 11 is fixed to the frame and then connected to the mounting plate 12 by screws via a piston rod. The cutting blade 13 can be fixed to the side of the mounting plate 12 away from the driving cylinder 11 by screws, so that the tip of the cutting blade 13 corresponds to the direction of the welding strip 3 to be cut. Furthermore, using the driving cylinder 11 to drive the cutting blade 13 to cut the welding strip 3 has the advantages of high precision, good operability, and cost-effectiveness.

[0047] In an optional embodiment, the positioning mechanism 2 includes a positioning component and a positioning platform. The positioning platform is used to place the welding strip 3, and the positioning component is used to position the welding strip 3 on the positioning platform. The welding strip 3 can be transported to the positioning platform by other automatic transport mechanisms 5. During the process of the drive component driving the cutting blade 13 to cut the welding strip 3, the positioning component intermittently positions the welding strip 3 according to the periodic cutting motion of the cutting blade 13.

[0048] In an optional embodiment, the positioning assembly includes a first telescopic member 21 and a first positioning rod 22. The first telescopic member 21 is disposed on the mounting plate 12 and can be bonded to the side of the mounting plate 12 away from the drive cylinder 11. One end of the first positioning rod 22 is bonded to the first telescopic member 21, and the other end can be used to press the welding strip 3 to achieve the positioning function of the welding strip 3. The positioning table includes a first positioning block 27, which is correspondingly disposed with the first positioning rod 22 so that the first positioning rod 22 can press the welding strip 3 onto the first positioning block 27. The welding strip 3 is located between the first positioning block 27 and the first positioning rod 22; and the sum of the lengths of the first telescopic member 21 and the first positioning rod 22 is greater than the length of the cutting blade 13; and / or

[0049] The positioning assembly includes a second telescopic member 24 and a second positioning rod 25. The second telescopic member 24 is disposed on the mounting plate 12 and can be bonded to the two sides of the mounting plate 12 away from the drive cylinder 11. One end of the second positioning rod 25 is bonded to the second telescopic member 24, and the other end can be used to press the welding strip 3 to achieve the positioning function of the welding strip 3. The positioning table includes a second positioning block 28, which is correspondingly disposed with the second positioning rod 25 so that the second positioning rod 25 can press the welding strip 3 onto the second positioning block 28. The welding strip 3 is located between the second positioning block 28 and the second positioning rod 25; and the sum of the lengths of the second telescopic member 24 and the second positioning rod 25 is greater than the length of the cutting blade 13.

[0050] In this embodiment, the positioning component can be configured with only the first telescopic member 21, the first positioning rod 22, and the first positioning block 27 to achieve the positioning function of the welding strip 3, or only the second telescopic member 24, the second positioning rod 25, and the second positioning block 28 to achieve the positioning function of the welding strip 3, or all three components can be configured simultaneously to achieve the positioning function of the welding strip 3. In this embodiment, the first telescopic member 21 and the second telescopic member 24 are located on both sides of the cutting blade 13 to achieve the positioning of the welding strip 3, which effectively improves the positioning accuracy and stability of the welding strip 3 and further improves the production quality of the battery string.

[0051] In some embodiments, the stroke of the drive cylinder 11 driving the cutting blade 13 is A, and the stroke of the cutting blade 13 cutting the welding strip 3 is B; when the welding strip 3 is not positioned, the distance between the first positioning rod 22 and the first positioning block 27 is C, and the distance between the second positioning rod 25 and the second positioning block 28 is also C; when the welding strip 3 is cut, the length of the first telescopic member 21 or the second telescopic member 24 compressed is D, and C > 0; therefore, when the welding strip 3 is cut, D < A + B.

[0052] In an optional embodiment, the first positioning block 27 and / or the second positioning block 28 are provided with a receiving positioning groove 29 for accommodating the solder strip 3; wherein the receiving positioning groove 29 is adapted to the shape of the solder strip 3. The groove size of the receiving positioning groove 29 can be set according to the size of the cut solder strip 3.

[0053] In this embodiment, when the welding strip 3 is positioned, it can be pressed into the positioning groove 29. This improves the positioning stability of the welding strip 3 and reduces the possibility of deformation and bending of the welding strip 3 due to excessive pressure. Furthermore, the shape of the welding strip 3 is not limited, while the shape of the positioning groove 29 can be adapted to the shape of the cut welding strip 3.

[0054] In optional embodiments, the shape of the receiving positioning groove 29 is one of an inverted trapezoid, rectangle, U-shape, or inverted triangle. Some solder strips 3 are irregularly shaped solder strips 3. When the solder strip 3 is a triangular solder strip 3, if the receiving positioning groove 29 is not provided on the first positioning block 27 and / or the second positioning block 28, the triangular solder strip 3 will deform and bend when it is pressed, thereby affecting the production quality of the battery string. Therefore, the shape of the receiving positioning groove 29 is one of an inverted trapezoid, rectangle, U-shape, or inverted triangle, which can adapt to the cutting of the irregularly shaped solder strips 3. In the embodiments of this application, the focus is mainly on the cutting of triangular solder strips, so the shape of the receiving positioning groove 29 is an inverted triangle.

[0055] In an optional embodiment, a first pressing block 23 is provided at the end of the first positioning rod 22 away from the first telescopic member 21; the first pressing block 23 may be integrally formed with the first positioning rod 22, or it may be connected to the first positioning rod 22 by screws, and the area of ​​the facing surface of the first pressing block 23 toward the first positioning block 27 is larger than the cross-sectional area of ​​the first positioning rod 22; and / or

[0056] A second pressure block 26 is provided at the end of the second positioning rod 25 away from the second telescopic member 24; the second pressure block 26 can be integrally formed with the second positioning rod 25, or it can be connected to the second positioning rod 25 by screws, and the area of ​​the facing surface of the second pressure block 26 toward the second positioning block 28 is greater than the cross-sectional area of ​​the second positioning rod 25.

[0057] In this embodiment, the arrangement of the first pressure block 23 and the second pressure block 26 can increase the pressing area when positioning the welding strip 3, thereby improving the stability of the positioning of the welding strip 3.

[0058] In an optional embodiment, the first telescopic member 21 and / or the second telescopic member 24 are springs. Springs can quickly return to their initial length after deformation, are highly adaptable, have long-term stability, and are cheaper to manufacture, making them economical.

[0059] In an optional embodiment, a first guide cylinder with a hollow structure is provided on the mounting plate 12. The first guide cylinder can be integrally formed on the mounting plate 12, or it can be set on the mounting plate 12 by screws. A first telescopic member 21 is disposed in the first guide cylinder, and a portion of the first positioning rod 22 is located in the first guide cylinder and connected to the first telescopic member 21, thereby realizing the guiding function of the first guide cylinder on the first positioning rod 22. Furthermore, the length of the first guide cylinder is less than the length of the cutting blade 13; and / or

[0060] A second guide cylinder with a hollow structure is provided on the mounting plate 12. The second guide cylinder can be integrally formed on the mounting plate 12, or it can be set on the mounting plate 12 with screws. A second telescopic member 24 is disposed in the second guide cylinder, and part of the second positioning rod 25 is located in the second guide cylinder and connected to the second telescopic member 24, thereby realizing the guiding function of the first guide cylinder on the first positioning rod 22. And the length of the second guide cylinder is less than the length of the cutting blade 13.

[0061] In this embodiment, it should be noted that the first guide cylinder mainly guides the first positioning rod 22 when positioning the welding strip 3, and similarly, the second guide cylinder mainly guides the second positioning rod 25 when positioning the welding strip 3, thereby achieving precise pressing of the welding strip 3 and improving the stability of the positioning of the welding strip 3. The lengths of both the first and second guide cylinders are less than the length of the cutting blade 13, so that the first and second guide cylinders do not interfere with the cutting blade 13 cutting the welding strip 3.

[0062] In some embodiments, the string welding machine further includes:

[0063] The system includes a clamping mechanism 4, a transport mechanism 5, a gripper mechanism 6, and a platform 7. The transport mechanism 5 transports the welding strip 3 to the cutting mechanism 1. The welding strip 3 is clamped and fixed by the clamping mechanism 4 and the gripper mechanism 6. The clamping mechanism 4 includes an upper pressure block 41 and a lower pressure block 42, which clamp the welding strip 3 between the upper pressure block 41 and the lower pressure block 42. The cutting mechanism 1 cuts the welding strip 3, and the gripper mechanism 6 places the cut welding strip 3 onto the platform 7. The gripper mechanism 6 includes a gripper cylinder 61 and a gripper 62. The gripper cylinder 61 drives the gripper 62 to reciprocate, and the gripper 62 clamps or releases the welding strip 3.

[0064] In this embodiment, the clamping mechanism 4, the transport mechanism 5, the gripper mechanism 6, and the platform 7 are all mounted on the frame, with the platform 7 being removable from the frame. The transport mechanism 5 typically uses a motor and conveyor belt to transport the welding strip 3; these are conventional structures and will not be described in detail in this embodiment. When the welding strip 3 is transported by the transport mechanism 5 to below the cutting blade 13, the clamping mechanism 4 clamps the welding strip 3 using the upper clamping block 41 and the lower clamping block 42. Then, the gripper cylinder 61 drives the gripper 62 to clamp the end of the welding strip 3, thus fixing the welding strip 3 for subsequent cutting.

[0065] In an optional embodiment, an auxiliary blade 14 is also provided at a corresponding position of the cutting blade 13. The cutting blade 13 cuts the solder strip 3 by contacting the auxiliary blade 14. In this embodiment, the auxiliary blade 14 and the cutting blade 13 may have the same shape, and the auxiliary blade 14 may be movably mounted on the frame and move towards or away from the cutting blade 13 to achieve the cutting of the solder strip 3. The auxiliary blade 14 may also be fixedly mounted on the frame to cooperate with the cutting blade 13 in cutting the solder strip 3, thereby improving the efficiency of cutting the solder strip 3.

[0066] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] For ease of description, directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom" generally indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the components themselves. For example, if a device in the drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0068] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0069] Unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0070] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0071] It should also be noted that the terms "one embodiment," "another embodiment," or "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0072] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0073] It should also be noted that the above are merely preferred embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A string welding machine, characterized in that, include: The cutting mechanism (1) includes a drive assembly and a cutting blade (13), the drive assembly being used to drive the cutting blade (13) to cut the welding strip (3); Positioning mechanism (2) is used to intermittently position the welding strip (3) according to the periodic cutting motion of the cutting blade (13); In each periodic cutting motion, the welding strip (3) is positioned by the positioning mechanism (2) and then cut by the cutting blade (13).

2. The string welding machine according to claim 1, characterized in that, The drive assembly includes a drive cylinder (11) and a mounting plate (12), and the cutting blade (13) is disposed on the mounting plate (12); the drive cylinder (11) drives the cutting blade (13) to move closer to or away from the welding strip (3) by driving the mounting plate (12).

3. The string welding machine according to claim 2, characterized in that, The positioning mechanism (2) includes a positioning component and a positioning platform. The positioning platform is used to place the welding strip (3), and the positioning component is used to position the welding strip (3) on the positioning platform.

4. The string welding machine according to claim 3, characterized in that, The positioning assembly includes a first telescopic member (21) and a first positioning rod (22). The first telescopic member (21) is disposed on the mounting plate (12). One end of the first positioning rod (22) is connected to the first telescopic member (21), and the other end can be used to press the welding strip (3). The positioning platform includes a first positioning block (27), which is correspondingly disposed with the first positioning rod (22). The welding strip (3) is located between the first positioning block (27) and the first positioning rod (22). The sum of the lengths of the first telescopic member (21) and the first positioning rod (22) is greater than the length of the cutting blade (13). The positioning assembly includes a second telescopic member (24) and a second positioning rod (25). The second telescopic member (24) is disposed on the mounting plate (12). One end of the second positioning rod (25) is connected to the second telescopic member (24), and the other end can be used to press the welding strip (3). The positioning platform includes a second positioning block (28). The second positioning block (28) is disposed correspondingly to the second positioning rod (25). The welding strip (3) is located between the second positioning block (28) and the second positioning rod (25). The sum of the lengths of the second telescopic member (24) and the second positioning rod (25) is greater than the length of the cutting blade (13).

5. The string welding machine according to claim 4, characterized in that, The first positioning block (27) and / or the second positioning block (28) are provided with a receiving positioning groove (29) for receiving the solder strip (3); The shape of the accommodating positioning groove (29) is adapted to that of the welding strip (3).

6. The string welding machine according to claim 5, characterized in that, The shape of the accommodating positioning groove (29) is one of an inverted trapezoid, rectangle, U-shape or inverted triangle.

7. The string welding machine according to claim 4, characterized in that, A first pressure block (23) is provided at the end of the first positioning rod (22) away from the first telescopic member (21), and the area of ​​the facing surface of the first pressure block (23) toward the first positioning block (27) is greater than the cross-sectional area of ​​the first positioning rod (22); and / or A second pressure block (26) is provided at the end of the second positioning rod (25) away from the second telescopic member (24). The area of ​​the facing surface of the second pressure block (26) toward the second positioning block (28) is greater than the cross-sectional area of ​​the second positioning rod (25).

8. The string welding machine according to any one of claims 4 to 7, characterized in that, The first telescopic member (21) and / or the second telescopic member (24) are springs.

9. The string welding machine according to any one of claims 4 to 7, characterized in that, The mounting plate (12) is provided with a first guide cylinder having a hollow structure, the first telescopic member (21) is disposed in the first guide cylinder, a portion of the first positioning rod (22) is located in the first guide cylinder and connected to the first telescopic member (21), and the length of the first guide cylinder is less than the length of the cutting blade (13); and / or The mounting plate (12) is provided with a second guide cylinder with a hollow structure. The second telescopic member (24) is disposed in the second guide cylinder. Part of the second positioning rod (25) is located in the second guide cylinder and connected to the second telescopic member (24). The length of the second guide cylinder is less than the length of the cutting blade (13).

10. The string welding machine according to any one of claims 1 to 7, characterized in that, An auxiliary blade (14) is also provided at the corresponding position of the cutting blade (13), and the cutting blade (13) cuts the welding strip (3) by contacting the auxiliary blade (14).

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