Battery piece flattening structure and welding strip cutting device

Abstract

The utility model discloses a battery piece flattening structure and a solder strip cutting device, and relates to the technical field of photovoltaic battery piece welding production, the battery piece flattening structure comprises an installation frame and a pressing piece, the pressing piece is installed on the installation frame, the pressing piece comprises a movable frame, a driving piece and a pressing roller, the movable frame is installed on the installation frame along the vertical direction, and the driving piece is installed on the movable frame along the vertical direction. The driving part comprises a first air cylinder and a first motor, the first air cylinder is installed on the installation frame, the output end of the first air cylinder is connected to the movable frame so as to drive the movable frame to reciprocate in the vertical direction, the lower pressing roller is rotationally installed on the movable frame corresponding to the horizontal direction, and the first motor is installed at one end of the movable frame. And the output end of the motor is connected to one end of the lower pressing roller. According to the scheme, when the welding strip of the battery piece is cut off, the battery piece can be well fixed and transferred, damage to the battery piece caused by cutting impact is effectively avoided, and the whole device is simple in structure and high in working stability and has good application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell welding production, in particular to a cell flattening structure and a welding strip cutting device. Background Art

[0002] BC-type cells have become increasingly popular in the photovoltaic industry due to their high conversion efficiency and product value. With increased market penetration, BC-type cells have gradually become the mainstream of crystalline silicon cells. However, due to the unique properties of BC-type cells (positive and negative grid lines are on the same side), the cell will warp after welding. This can cause the solder ribbon to collide with the cutter during stringing, and the impact of the cutter when cutting the solder ribbon causes the cell to jump up and down. This can lead to hidden cracks and damage in the cell, thereby reducing production yield and causing economic losses. A cell flattening mechanism and solder ribbon cutting device are now proposed to address the above problems. Utility Model Content

[0003] The main purpose of the utility model is to propose a cell flattening structure and a welding ribbon cutting device, which aims to solve the problem that after welding, the cell of traditional BC type batteries will warp, resulting in the welding ribbon easily colliding with the cutter when passing through the string cutter, and the impact of the cutter causing the cell to jump up and down when cutting the welding ribbon, which may cause hidden cracks and damage to the cell, thereby reducing the production yield and causing economic losses.

[0004] To achieve the above-mentioned purpose, the present invention proposes a battery cell flattening structure for pressing down and fixing the battery cell. The battery cell flattening structure includes:

[0005] mounting bracket; and

[0006] A lower pressing member is mounted on the mounting frame;

[0007] The lower pressure member includes a movable frame, a driving member and a lower pressure roller. The movable frame is installed on the mounting frame in the vertical direction. The driving member includes a first cylinder and a first motor. The first cylinder is installed on the mounting frame, and the output end of the first cylinder is connected to the movable frame to drive the movable frame to reciprocate in the vertical direction. The lower pressure roller is installed on the movable frame corresponding to the horizontal rotation. The first motor is installed at one end of the movable frame, and the output end of the motor is connected to one end of the lower pressure roller to drive the lower pressure roller to rotate.

[0008] In one embodiment, the number of the pressing members is two, and the two pressing members are arranged in parallel in the same horizontal direction.

[0009] This solution also discloses a solder ribbon cutting device for cutting the solder ribbon of a battery cell. The solder ribbon cutting device includes the above-mentioned battery cell flattening mechanism and further includes:

[0010] a base, on which the mounting bracket is mounted;

[0011] A conveying device is mounted on the base and the mounting frame, and a concave cutting area is formed on the feeding plane of the conveying device corresponding to the portion on the mounting frame, and the horizontal sides of the concave cutting area respectively correspond to the feeding end and the discharging end of the conveying device; and

[0012] The cutting mechanism includes a cutting piece, which is arranged on the mounting frame corresponding to the concave cutting area. The two pressing pieces are movably installed on the mounting frame corresponding to the two sides of the cutting piece to press down and release the two sides of the battery cell welding strip position.

[0013] In one embodiment, a first support frame and a second support frame are respectively provided on the base at two ends corresponding to the feeding direction of the conveying device, and the first support frame and the second support frame are respectively provided corresponding to the feeding end and the discharging end;

[0014] The conveying device comprises:

[0015] a second motor, mounted at the bottom of the first support frame;

[0016] a guide roller member, comprising an output roller and a plurality of support rollers, wherein the output roller is rotatably mounted on the first support frame corresponding to the second motor, and one end of the output roller is connected to the output end of the second motor, and the plurality of support rollers are rotatably mounted on the first support frame and the second support frame respectively to form a frame structure; and

[0017] The conveyor belt is guided and installed on one side of the output roller and the plurality of support rollers to form the feeding plane.

[0018] In one embodiment, the guide roller member further comprises a shaping roller;

[0019] The shaping rollers include two first rollers arranged corresponding to the feeding plane and two second rollers arranged below the first rollers, the two first rollers and the two second rollers are rotatably mounted on the mounting frame, and the conveyor belt guide is mounted on the two first rollers and the two second rollers to form the concave cutting area;

[0020] The two first rollers correspond to the two lower pressing rollers in the up and down directions.

[0021] In one embodiment, the second support frame is further provided with a tensioning member;

[0022] The tensioning member comprises:

[0023] A tensioning roller, wherein the second support frame is provided with two slide grooves, the two ends of the tensioning roller are respectively slidably installed in the two slide grooves, and the arc-shaped side wall of the tensioning roller is in contact with the conveyor belt; and

[0024] The limiting component includes two limiting bolts, and the two limiting bolts are threadedly installed on the second support frame corresponding to the two sliding grooves, and one end of the two bolts is respectively threadedly connected to the two ends of the tensioning roller.

[0025] In one embodiment, the downward end of the mounting frame is slidably mounted on the base, and a horizontal plate portion is provided on the downward end of the mounting frame;

[0026] The welding ribbon cutting device further includes an adjusting member, which includes:

[0027] A third motor is mounted on the base; and

[0028] A screw rod is rotatably mounted on the base, and one end of the screw rod passes through the transverse plate portion and is connected to the third motor.

[0029] In one embodiment, the cutter element comprises:

[0030] A lower cutting knife is provided correspondingly to the inner side of the concave cutting area, and both ends of the lower cutting knife are fixedly mounted on the mounting frame;

[0031] an upper cutter, slidably mounted on the mounting frame corresponding to the lower cutter; and

[0032] The second cylinder is installed on the mounting frame, and the output end of the second cylinder is connected to the upper cutter.

[0033] In one embodiment, the mounting frame is provided with a limiting support member to limit and buffer the movable frame; and / or,

[0034] A guide portion is provided on the vertical side wall of the mounting frame, and both ends of the upper cutter and the movable frame are slidably mounted on the guide portion; and / or,

[0035] An upper knife seat is slidably mounted on the guide portion, the upper cutter is fixedly mounted on the upper knife seat, and the second cylinder is connected to the upper knife seat;

[0036] The mounting frame is provided with a lower knife seat, and the lower cutting knife is fixedly mounted on the lower knife seat.

[0037] In one embodiment, the limiting support member includes a fixed seat fixedly mounted on the outer side wall of the mounting frame, an elastic rod is provided on the fixed seat corresponding to one end of the movable frame, the elastic rod has a stroke in the up and down directions, and a flexible pad is provided on the upward end of the elastic rod.

[0038] In the technical solution of the present invention, during the process of cutting the cell ribbon, the corresponding fixing structure can effectively fix and transport the cell. Specifically, when cutting the ribbon, the cell is flattened, avoiding the risk of the cell or ribbon hitting the cutter due to cell warping when passing through the cutter. It also avoids the cell breakage or hidden cracks caused by the cell jumping when the ribbon is cut between cells. This fixing structure can effectively improve the cutting yield when cutting the ribbon during the cell production process, thereby reducing economic losses in the production process. Compared with traditional ribbon cutting devices, the structure of this solution is simpler and more compact, and has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0040] Figure 1 This is a detailed structural diagram of the flattened battery cell structure in the present invention;

[0041] Figure 2 for Figure 1 A partial enlarged view of point B in the middle;

[0042] Figure 3 To include Figure 1 Schematic diagram of the overall structure of the solder ribbon cutting device with a flattening structure for the middle cell;

[0043] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the welding ribbon cutting device provided in;

[0044] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0045] Figure 6 for Figure 1 Schematic diagram of another embodiment of the flattened structure of the battery cell.

[0046] Description of Figure Numbers:

[0047] 100, solder ribbon cutting device; 200, cell flattening structure; 1, base; 11, mounting frame; 111, horizontal plate; 112, guide portion; 12, first support frame; 13, second support frame; 131, chute; 14, feed end; 15, discharge end; 16, concave cutting area; 2, lower pressure member; 21, movable frame; 22, first cylinder; 23, first motor; 24, lower pressure roller; 3, conveying device; 31, second motor ; 32. Output roller; 33. Support roller; 34. Conveyor belt; 35. First roller; 36. Second roller; 4. Tensioning member; 41. Tensioning roller; 42. Limit bolt; 5. Adjusting member; 51. Third motor; 52. Screw member; 6. Cutter member; 61. Upper cutter; 62. Lower cutter; 63. Second cylinder; 64. Upper knife seat; 65. Lower knife seat; 7. Limiting support member; 71. Fixed seat; 72. Elastic rod; 73. Flexible pad.

[0048] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] BC type batteries have been increasingly favored by the photovoltaic industry due to their high conversion efficiency and product value. With the increase in market supply, BC type batteries have gradually become the mainstream of crystalline silicon batteries. However, due to the unique properties of BC type batteries (positive and negative pole grid lines are on the same side), after welding, the battery cells will warp, causing the welding ribbon to easily collide with the cutter when the string is cut, and the impact of the cutter when the cutter cuts the welding ribbon causes the battery cell to jump up and down, which may cause hidden cracks and damage to the battery cell, thereby reducing the production yield and causing economic losses.

[0053] The utility model provides a battery cell flattening structure and a welding ribbon cutting device for solving the above problems.

[0054] See also Figures 1 to 2 In one embodiment of the present invention, in the battery cell flattening structure 200, when the lower pressing member 2 is working, the first cylinder 22 drives the movable frame 21 to move in the vertical direction, thereby realizing the pressing and releasing of the battery cell, and at the same time, the motor drives the lower pressing roller 24 to rotate. If the battery cell material is transported in conjunction with the feeding belt, the two lower pressing rollers 24 are driven by the corresponding first motor 23, and their output speed can be set to a rotation speed that keeps synchronous with the feeding belt corresponding to the feeding speed of the feeding belt, so that when the lower pressing roller 24 presses the battery cell, it can actively assist the battery string to move on the feeding belt, and can effectively avoid the situation in which the battery cell is slipped by the force applied by the lower pressing roller 24 during transportation and is difficult to be transported along the feeding direction.

[0055] It is conceivable that, in addition to being configured as two separate pressing structures in the above embodiment, the pressing member 2 may also be configured as follows: Figure 6The overall structure shown is that the two lower pressure rollers 24 are simultaneously arranged on the movable frame 21, and the same end of the two lower pressure rollers 24 is connected by a transmission belt, and the other end is driven by a first motor 23, and the up and down movement is driven by a first cylinder 22. This integrated downward pressure structure can also achieve the double-sided downward pressure effect as in the above embodiment, but in the cutting process, after each cutting of the welding strip at the current position, the two lower pressure rollers 24 must be raised, and after the next string of battery cells passes the cutter, the two lower pressure rollers 24 move downward to press. The above two methods can solve the problem that the battery cells are prone to warping during the current cutting of BC type battery cell welding strips, thereby affecting the cutting production. In actual application, they can be selectively used according to the actual production material reserves or actual requirements.

[0056] The present invention also provides a solder strip cutting device 100, which includes the above-mentioned cell flattening structure 200. The specific structure of the cell flattening structure 200 is referred to the above-mentioned embodiment. Since the solder strip cutting device 100 includes all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described in detail here. Figures 3 to 5 As shown, the conveying device 3 is arranged on the base 1, and the conveying device 3 has a feeding plane in the horizontal direction. At the same time, a concave cutting area 16 is provided on the feeding plane corresponding to the cutter member 6 to form an avoidance structure when the cutter member 6 moves up and down to cut the battery cell welding ribbon. The horizontal sides of the concave cutting area 16 correspond to the feeding end 14 and the discharge end 15 of the feeding device. When the battery cell material moves from the feeding end 14 to the discharge end 15, first one of the pressing members 2 presses down to flatten one end of the battery cell, thereby ensuring that one end of the battery cell passes through the cutter member 6 smoothly, and then one end of the battery cell just passes through the cutter member 6 to reach the discharge end 15. When the battery cell is cut off, the other pressing member 2 moves downward and presses the battery cell at the same time. When the cutting point of the battery cell, that is, the position of the welding ribbon moves to the position of the cutting member 6, the cutting member 6 cuts the battery cell welding ribbon. In this process, since the two pressing members 2 respectively press the two sides of the welding ribbon, it is ensured that the battery cell welding ribbon will not be bent or warped during the cutting process, and no vibration will be generated to cause damage to the battery cell, thereby improving the stability of the battery cell welding ribbon cutting process. After the battery cell welding ribbon is cut, the pressing member 2 located at the discharge end 15 rises, and after the next battery cell moves over the cutter, the pressing member 2 moves downward to flatten the battery cell passing the cutter, and the cycle is repeated.

[0057] In the conveying device 3, multiple support rollers 33 are rotatably mounted on the first support frame 12 and the second support frame 13, forming a frame structure. After the conveyor belt 34 is guided and mounted on the output roller 32 and the multiple support rollers 33, the second motor 31 operates to realize the conveying operation of the conveyor belt 34. The multiple support rollers 33 located above the horizontally arranged feeding plane are arranged horizontally, thereby maintaining the feeding plane in a well-level state.

[0058] Wherein, the guide roller also includes a shaping roller, and the shaping roller is arranged corresponding to the concave cutting area 16. Specifically, Figure 4 As shown, the two first rollers 35 of the shaping rollers are arranged at a certain distance in the horizontal direction and kept flush with the feeding plane to ensure horizontal transportation of the battery cells. The other two second rollers 36 are installed below the two first rollers 35 respectively. The conveyor belt 34 is guided and installed between the two first rollers 35 and the two second rollers 36 to form the concave cutting area 16. During the actual cutting process, the concave cutting area 16 can avoid the cutter, thereby ensuring that the battery cell welding ribbon can be cut stably in the vertical direction. It is conceivable that the concave cutting area 16 is not limited to the rectangular area formed by the four rollers in this solution, but can also be an irregular concave shape formed by multiple rollers.

[0059] In order to adjust the tension of the conveyor belt 34, a tensioning member 4 is further provided in this embodiment. Specifically, the tensioning roller 41 is disposed on the side of the conveyor belt 34 away from the frame structure, with the curved outer wall of the tensioning roller contacting the conveyor belt 34. A chute 131 is provided on the second support frame 13, allowing the tensioning roller 41 to move horizontally. During adjustment, the limiting bolt 42 at the end of the tensioning roller 41 is rotated, driving the tensioning roller 41 to slide in the chute 131, thereby adjusting the tension of the entire conveyor belt 34 by the tensioning roller 41, thereby correspondingly adjusting the support of the conveyor belt 34.

[0060] The size of the battery cell is different in the actual production process. In order to make this solution applicable to the cutting process of battery cell ribbons of different sizes, in this embodiment, Figure 1 and Figure 3 As shown, an adjustment member 5 is provided for adjusting the horizontal relative length of the feed end 14 and the discharge end 15. Specifically, when the third motor 51 is in operation, it can drive the mounting frame 11 to move in the feeding direction via the screw member 52, thereby adjusting the horizontal length of the feed end 14 and the discharge end 15. In actual operation, the position of the mounting frame 11 can be adjusted in real time according to the size and specifications of the actual battery cells.

[0061] The cutting member 6 includes an upper cutting blade 61 and a lower cutting blade 62. The lower cutting blade 62 is fixedly mounted. Specifically, the length of the lower cutting blade 62 is arranged along the axis of the first roller 35. The lower cutting blade 62 is arranged inside the concave cutting area 16. Its cut surface is flush with or slightly lower than the upper end surface of the conveyor belt 34. This ensures a neat cut surface and prevents the end of the battery cell from colliding with the lower cutting blade 62 during transportation. During the cutting operation, the upper cutting blade 61 is driven downward by the second cylinder 63 to cut the welding ribbon. After cutting is completed, the upper cutting blade 61 returns to its original position.

[0062] Wherein, guide portions 112 are provided on both the inner and outer side walls of the mounting frame 11 , and both ends of the upper cutter 61 and the movable frame 21 are slidably mounted on the guide portions 112 .

[0063] like Figure 5 and Figure 4 In addition, a limiting support member 7 is provided on the mounting frame 11 to limit and buffer the movable frame 21. During the welding ribbon cutting process, when the movable frame 21 moves downward, the limiting support member 7 can stop the movement of the movable frame 21, and the stopping process is a flexible buffering process, thereby protecting the movable frame 21 and reducing the vibration caused by hard contact during the cutting process, making the cutting process more stable.

[0064] like Figure 5 As shown, an upper knife seat 64 and a lower knife seat 65 are provided corresponding to the upper cutter 61 and the lower cutter 62 respectively. During actual use, the upper cutter 61 and the lower cutter 62 can be detachably installed on the upper knife seat 64 and the lower knife seat 65 respectively, and the tools can be replaced and maintained according to the wear of the corresponding cutters.

[0065] The limiting support member 7 specifically includes an elastic rod 72 installed on a fixed seat 71. The elastic rod 72 has an elastic stroke in the vertical direction. At the same time, a flexible pad 73 is provided at the end of the elastic rod 72. When the movable frame 21 descends and contacts the end of the elastic rod 72, the elastic rod 72 can perform flexible buffering, and when the upper cutter 61 is in full contact with the lower cutter 62, the upper cutter 61 is stopped. When the upper cutter 61 ascends, the elastic rod 72 performs a reset movement upward.

[0066] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery cell flattening structure for pressing down and fixing battery cells, characterized in that: The battery cell flattening structure includes: mounting bracket; and A lower pressing member is mounted on the mounting frame; The lower pressure member includes a movable frame, a driving member and a lower pressure roller. The movable frame is installed on the mounting frame in the vertical direction. The driving member includes a first cylinder and a first motor. The first cylinder is installed on the mounting frame, and the output end of the first cylinder is connected to the movable frame to drive the movable frame to reciprocate in the vertical direction. The lower pressure roller is installed on the movable frame corresponding to the horizontal rotation. The first motor is installed at one end of the movable frame, and the output end of the motor is connected to one end of the lower pressure roller to drive the lower pressure roller to rotate.

2. The battery cell flattening structure according to claim 1, wherein: Specifically, there are two pressing members, and the two pressing members are arranged in parallel in the same horizontal direction; and / or, A plurality of the motors and lower pressing rollers may be arranged on each of the movable frames, and the plurality of lower pressing rollers are arranged on the same plane in the horizontal direction.

3. A solder ribbon cutting device for cutting solder ribbons of battery cells, characterized in that: include: A battery cell flattening structure, as claimed in any one of claims 1 to 2; a base, on which the mounting bracket is mounted; A conveying device is mounted on the base and the mounting frame, and a concave cutting area is formed on the feeding plane of the conveying device corresponding to the portion on the mounting frame, and two horizontal sides of the concave cutting area correspond to the feeding end and the discharging end of the conveying device respectively; as well as, The cutting mechanism includes a cutting piece, which is arranged on the mounting frame corresponding to the concave cutting area. The two pressing pieces are movably installed on the mounting frame corresponding to the two sides of the cutting piece to press down and release the two sides of the battery cell welding strip position.

4. The welding ribbon cutting device according to claim 3, wherein: A first support frame and a second support frame are respectively provided on the base at two ends corresponding to the feeding direction of the conveying device, and the first support frame and the second support frame are respectively provided corresponding to the feeding end and the discharging end; The conveying device comprises: a second motor, mounted at the bottom of the first support frame; a guide roller member, comprising an output roller and a plurality of support rollers, wherein the output roller is rotatably mounted on the first support frame corresponding to the second motor, and one end of the output roller is connected to the output end of the second motor, and the plurality of support rollers are rotatably mounted on the first support frame and the second support frame respectively to form a frame structure; and The conveyor belt is guided and installed on one side of the output roller and the plurality of support rollers to form the feeding plane.

5. The welding ribbon cutting device according to claim 4, characterized in that: The guide roller member also includes a shaping roller; The shaping rollers include two first rollers arranged corresponding to the feeding plane and two second rollers arranged below the first rollers, the two first rollers and the two second rollers are rotatably mounted on the mounting frame, and the conveyor belt guide is mounted on the two first rollers and the two second rollers to form the concave cutting area; The two first rollers correspond to the two lower pressing rollers in the up and down directions.

6. The welding ribbon cutting device according to claim 5, characterized in that: The second support frame is further provided with a tensioning member; The tensioning member comprises: A tensioning roller, wherein the second support frame is provided with two slide grooves, the two ends of the tensioning roller are respectively slidably installed in the two slide grooves, and the arc-shaped side wall of the tensioning roller is in contact with the conveyor belt; and The limiting component includes two limiting bolts, and the two limiting bolts are threadedly installed on the second support frame corresponding to the two sliding grooves, and one end of the two bolts is respectively threadedly connected to the two ends of the tensioning roller.

7. The welding ribbon cutting device according to claim 3, wherein: The downward end of the mounting frame is slidably mounted on the base, and a horizontal plate portion is provided on the downward end of the mounting frame; The welding ribbon cutting device further includes an adjusting member, which includes: a third motor, mounted on the base; as well as, A screw rod is rotatably mounted on the base, and one end of the screw rod passes through the transverse plate portion and is connected to the third motor.

8. The welding ribbon cutting device according to claim 3, wherein: The cutting member comprises: A lower cutting knife is provided correspondingly to the inner side of the concave cutting area, and both ends of the lower cutting knife are fixedly mounted on the mounting frame; an upper cutter, slidably mounted on the mounting frame corresponding to the lower cutter; and The second cylinder is installed on the mounting frame, and the output end of the second cylinder is connected to the upper cutter.

9. The welding ribbon cutting device according to claim 8, wherein: The mounting frame is provided with a limiting support member to limit and buffer the movable frame; and / or, A guide portion is provided on the vertical side wall of the mounting frame, and both ends of the upper cutter and the movable frame are slidably mounted on the guide portion; and / or, An upper knife seat is slidably mounted on the guide portion, the upper cutter is fixedly mounted on the upper knife seat, and the second cylinder is connected to the upper knife seat; The mounting frame is provided with a lower knife seat, and the lower cutting knife is fixedly mounted on the lower knife seat.

10. The welding ribbon cutting device according to claim 9, wherein: The limiting support member includes a fixing seat fixedly mounted on the outer side wall of the mounting frame, an elastic rod is provided on the fixing seat corresponding to one end of the movable frame, the elastic rod has a stroke in the up and down directions, and a flexible pad is provided on the upward end of the elastic rod.

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