CN220944067U - Welding strip cutting device and battery series welding equipment - Google Patents

Abstract

The utility model relates to the technical field of battery piece welding, in particular to a welding strip cutting device and battery series welding equipment. This weld area cutting device is including fixed cutting assembly and activity cutting assembly, fixed cutting assembly is including fixed cutter sword and the guide surface that welds the area baffle that is in the coplanar, weld area baffle and install on the guide surface, it is used for supporting the cutting end of welding the area to weld the area baffle, the activity cutting assembly includes movable mounting frame, activity cutter sword and elastic component, the activity cutter sword rotates and installs on movable mounting frame, the elastic component is connected between movable mounting frame and activity cutter sword, the elastic component is used for making the activity cutter sword rotate and make activity cutter sword and guide surface butt for movable mounting frame, the activity cutter assembly can be towards the direction that is close to fixed cutting assembly, so that the activity cutter sword is along the direction that the guide surface is close to the cutting sword. The welding strip cutting device ensures the flatness and regularity of the section of the welding strip after cutting.

Description

Welding strip cutting device and battery series welding equipment

Technical Field

The utility model relates to the technical field of battery piece welding, in particular to a welding strip cutting device and battery series welding equipment.

Background

In the production and manufacturing process of the solar cell module, single solar cells are required to be subjected to series welding to form a solar cell panel, and welding strips with specified lengths are required to be cut in the series welding process so as to realize welding among the cells.

The existing welding strip cutting device has the defects that a certain gap inevitably exists between the cutting edge of the fixed knife and the cutting edge of the movable cutting knife, tightness between the cutting edge of the fixed knife and the cutting edge of the movable cutting knife cannot be guaranteed, the welding strip is a very thin tin-plated copper strip, the structural rigidity is weak, burrs and the like are generated on the section of the welding strip due to the larger cutting gap, and the flatness and regularity of the section of the welding strip are affected. In addition, because the structural rigidity of the welding strip is weak, the welding strip is easy to cause the problem that the section is tilted and bent under the action of cutting force, and the flatness and regularity of the section of the welding strip are further reduced. In addition, if the cut section of the welding strip has uneven and irregular problems, the welding precision between the battery pieces can be greatly affected, and even the problem of bad hidden cracking of the battery pieces is caused.

Therefore, there is a need for a welding strip cutting device and a battery series welding device to solve the above problems.

Disclosure of utility model

An object of the present utility model is to provide a welding strip cutting device to ensure flatness and regularity of a cut section of a welding strip.

Another object of the present utility model is to provide a battery serial welding apparatus, so as to ensure the welding precision of the battery piece and improve the welding quality of the battery piece.

To achieve the purpose, the utility model adopts the following technical scheme:

a solder strip cutting device comprising:

The fixed cutting assembly comprises a fixed cutter blade and a welding strip baffle, the fixed cutter blade and the guide surface are positioned on the same plane, the welding strip baffle is arranged on the guide surface, and the welding strip baffle is used for propping against the cutting end of the welding strip; and

The movable cutting assembly comprises a movable mounting frame, a movable cutting knife and an elastic piece, wherein the movable cutting knife is rotatably mounted on the movable mounting frame, the elastic piece is connected between the movable mounting frame and the movable cutting knife, the elastic piece is configured to enable the movable cutting knife to rotate relative to the movable mounting frame and enable the movable cutting knife to be abutted against the guide surface, and the movable cutting assembly can move towards the direction close to the fixed cutting assembly so that the movable cutting knife can move along the direction that the guide surface is close to the cutting edge.

Preferably, the pressing end surface of the welding strip baffle plate and the cutting knife blade are positioned on the same horizontal plane.

As a preferable scheme, the angle of the cutting edge of the movable cutting knife is beta, and beta is more than or equal to 30 degrees and less than or equal to 60 degrees; the included angle formed by the cutting edge and the guide surface is alpha, and alpha is more than or equal to 2 degrees and less than or equal to 10 degrees.

As a preferable mode, the welding strip cutting device further includes:

And the output shaft of the driving assembly is connected with the movable mounting frame, and the driving assembly is configured to drive the movable cutting assembly to move towards or away from the fixed cutting assembly.

As a preferred scheme, the welding strip cutting device further comprises a limiting assembly, and the limiting assembly comprises:

The first limiting piece is arranged on the fixed cutting assembly and can be abutted against the movable mounting frame so as to limit the movable cutting assembly to move towards the limit position far away from the fixed cutting assembly; and

The second limiting piece is arranged on the movable mounting frame and can be abutted against the fixed cutting assembly so as to limit the movable cutting assembly to move towards the limit position close to the fixed cutting assembly.

Preferably, the first limiting member includes:

The limiting piece mounting seat is fixedly arranged on the fixed cutting assembly; and

And the limit screw is in threaded connection with the limit piece mounting seat, and the screw head of the limit screw can be abutted with the movable mounting frame.

Preferably, the elastic member is a spring, and the flexible mounting frame includes:

the movable cutter frame is rotatably arranged on the movable cutter frame; and

The elastic piece mounting seat is fixedly mounted on the movable tool rest, the first end of the spring is connected with the elastic piece mounting seat, and the second end of the spring is connected with the movable cutting knife.

As a preferred scheme, fixed cutting assembly still includes fixed knife rest, fixed knife fixed mounting in on the fixed knife rest, welding strip cutting device still includes:

The guide assembly comprises a guide rail and a sliding block which are connected in a sliding manner, the guide rail extends along the moving direction of the movable cutting knife, one of the guide rail and the sliding block is arranged on the fixed knife rest, and the other of the guide rail and the sliding block is arranged on the movable mounting frame.

Preferably, the fixed knife further comprises:

The fixed knife comprises a fixed knife main body, wherein two end parts of the fixed knife main body extend towards the direction of the movable cutting assembly to form guide arms, one side surface of each guide arm, which faces towards the movable cutting knife, is the guide surface, the fixed knife main body is provided with a cutting blade, and the cutting knife blade is positioned between the two guide surfaces.

A battery string welding apparatus comprising a welding device and a welding strip cutting device as described above, the welding device being configured to weld the welding strip cut by the welding strip cutting device to a battery piece.

The utility model has the beneficial effects that:

The utility model provides a welding strip cutting device which comprises a fixed cutting assembly and a movable cutting assembly, wherein the fixed cutting assembly comprises a fixed cutter and a welding strip baffle, the fixed cutter comprises a cutting blade and a guide surface which are positioned on the same plane, the welding strip baffle is arranged on the guide surface, the welding strip baffle is used for abutting against the cutting end of a welding strip, the movable cutting assembly comprises a movable mounting frame, a movable cutting blade and an elastic piece, the movable cutting blade is rotatably arranged on the movable mounting frame, the elastic piece is connected between the movable mounting frame and the movable cutting blade, the elastic piece is used for enabling the movable cutting blade to rotate relative to the movable mounting frame and enable the movable cutting blade to abut against the guide surface, and the movable cutting assembly can move towards the direction approaching to the fixed cutting assembly so as to enable the movable cutting blade to move towards the direction approaching to the cutting blade along the guide surface. According to the welding strip cutting device, the cutting end of the welding strip is pressed by arranging the welding strip baffle, so that the problem that the section of the welding strip after cutting is bent and tilted is avoided, and the flatness of the section of the welding strip is ensured. In addition, the movable cutting knife ensures the pretightening force between the movable cutting knife and the cutting knife edge under the action of the elastic piece, so that the movable cutting knife moves to the moment of cutting with the cutting knife edge along the guide surface, no gap exists between the movable cutting knife and the cutting knife edge, and the regularity of the section of the welding strip is ensured. The structural design of the welding strip cutting device ensures the regularity and flatness of the section of the welding strip, and provides a basis for the accurate welding of the follow-up battery piece.

The utility model also provides battery series welding equipment, which ensures the welding precision of the battery piece by applying the welding strip cutting device, thereby improving the welding quality of the battery piece.

Drawings

Fig. 1 is a schematic structural diagram of a welding strip cutting device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a hidden solder strip removing baffle of a solder strip cutting device according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a solder strip cutting device according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

Fig. 5 is a schematic structural diagram of a welding strip cutting device according to an embodiment of the present utility model.

In the figure:

1. Fixing the cutting assembly; 11. fixing the knife; 111. a stationary blade body; 1111. a guide arm; 112. cutting blade; 113. a guide surface; 12. welding a baffle; 13. fixing the tool rest;

2. A movable cutting assembly; 21. a flexible mounting rack; 211. a movable tool rest; 212. an elastic piece mounting seat; 213. a connecting seat; 2131. a mounting groove; 214. a limiting part fixing seat; 22. a movable cutting knife; 221. a cutting edge; 23. an elastic member; 24. a rotating shaft;

3. A drive assembly; 31. an output shaft;

4. A limit component; 41. a first limiting member; 411. a limiting piece mounting seat; 412. a limit screw; 413. a first lock nut; 42. a second limiting piece; 421. a limit screw; 422. a second lock nut;

5. A guide assembly; 51. a guide rail; 52. a sliding block.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 and 2, the present embodiment provides a welding strip cutting device, which includes a fixed cutting assembly 1 and a movable cutting assembly 2, wherein the fixed cutting assembly 1 includes a fixed cutting blade 11 and a welding strip baffle 12, the fixed cutting assembly 11 includes a cutting blade 112 and a guide surface 113 which are in the same plane, the welding strip baffle 12 is mounted on the guide surface 113, the welding strip baffle 12 is used for pressing a cutting end of a welding strip, the movable cutting assembly 2 includes a movable mounting frame 21, a movable cutting blade 22 and an elastic member 23, the movable cutting blade 22 is rotatably mounted on the movable mounting frame 21, the elastic member 23 is connected between the movable mounting frame 21 and the movable cutting blade 22, the elastic member 23 is used for enabling the movable cutting blade 22 to rotate relative to the movable mounting frame 21 and enabling the movable cutting blade 22 to abut against the guide surface 113, and the movable cutting assembly 2 is capable of moving in a direction approaching the fixed cutting assembly 1 so as to enable the movable cutting blade 22 to move in a direction approaching the cutting blade 112 along the guide surface 113.

The welding strip cutting device provided by the embodiment presses the cutting end of the welding strip by arranging the welding strip baffle 12, so that the problem that the section of the welding strip after cutting is bent and tilted is avoided, and the flatness of the section of the welding strip is ensured. In addition, the movable cutting knife 22 ensures the pretightening force between the movable cutting knife 22 and the cutting knife edge 112 under the action of the elastic piece 23, so that the movable cutting knife 22 moves along the guide surface 113 to the moment of cutting with the cutting knife edge 112, no gap exists between the movable cutting knife 22 and the cutting knife edge 112, and the regularity of the section of the welding strip is ensured. Therefore, the structural design of the welding strip cutting device ensures the regularity and flatness of the section of the welding strip, and provides a basis for the accurate welding of the follow-up battery piece.

In this embodiment, as shown in fig. 1 and 2, the fixed cutting assembly 1 is located above the movable cutting assembly 2, and the movable cutting assembly 2 moves upward relative to the fixed cutting assembly 1, so that the cutting of the butt welding belt is completed. In other embodiments, the fixed cutting assembly 1 may be positioned below the movable cutting assembly 2, and the movable cutting assembly 2 may be moved downward relative to the fixed cutting assembly 1, thereby completing the cutting of the weld.

In this embodiment, as shown in fig. 3, the pressing end surface of the welding strip baffle 12 and the cutting blade 112 are on the same horizontal plane (i.e., on the same horizontal level). The above arrangement ensures the reliability of the welding strip baffle 12 against the cutting end of the cut welding strip. It should be noted that, in the present embodiment, the pressing end surface of the welding strip baffle 12 and the cutting blade 112 are arranged in a lamination manner along the front-rear direction, and the pressing end surface of the welding strip baffle 12 is located at the front side of the cutting blade 112, and the cut welding strip is also taken away at the front side of the cutting blade 112, so that the pressing end surface of the welding strip baffle 12 is ensured to be pressed against the cut end of the cut welding strip.

Alternatively, in the present embodiment, as shown in fig. 3 and 4, the angle of the cutting edge 221 of the movable cutter 22 is β, and 30+.β.ltoreq.60°, and the angle of the cutting edge 221 with the guide surface 113 is α, and 2+.ltoreq.α.ltoreq.10°. The above-mentioned angle setting of the cutting edge 221 ensures the structural strength of the cutting edge 221 and also ensures the sharpness of the cutting edge 221. In addition, the included angle between the cutting edge 221 and the guide surface 113 ensures the cutting force of the cutting edge 221 on the welding strip, and further ensures the flatness and regularity of the section of the welding strip. Specifically, the angle β of the cutting edge 221 may be 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, or 60 °, and the angle β of the cutting edge 221 is preferably 30 ° in the present embodiment. In this embodiment, the angle α formed by the cutting edge 221 and the guide surface 113 may be 2 °,3 °, 4 °, 5 °, 6 °, 7 °, 8 °, 9 °, or 10 °, and it is preferable that the angle α formed by the cutting edge 221 and the guide surface 113 is 7 °.

Preferably, as shown in fig. 2, the fixed blade 11 further includes a fixed blade body 111, two end portions of the fixed blade body 111 extend toward the movable cutting assembly 2 to form guide arms 1111, a side surface of the guide arms 1111 toward the movable cutting blade 22 is a guide surface 113, a cutting blade 112 is formed on the fixed blade body 111, and the cutting blade 112 is located between the two guide surfaces 113. The above arrangement further provides a guiding function for the lifting movement of the movable cutter 22, and ensures the stability and reliability of the up-and-down cutting of the cutter blade 112 and the movable cutter 22. Specifically, in the present embodiment, two guide surfaces 113 are located at both ends of the cutting blade 112 in the left-right direction.

As shown in fig. 1 and 2, the welding strip cutting device provided in this embodiment further includes a driving component 3, an output shaft 31 of the driving component 3 is connected to the flexible mounting frame 21, and the driving component 3 is used for driving the movable cutting component 2 to move in a direction approaching or separating from the fixed cutting component 1. When the welding strip is required to be cut, the driving component 3 drives the movable cutting component 2 to move towards the direction close to the fixed cutting component 1 until no gap exists between the movable cutting knife 22 and the cutting knife edge 112, and after the welding strip is cut, the driving component 3 drives the movable cutting component 2 to move towards the direction far away from the fixed cutting component 1, so that the next welding strip cutting work is finished. Specifically, in this embodiment, the driving assembly 3 may be a driving cylinder, and the driving cylinder has the advantages of reliable operation and easy installation and control.

In addition, as shown in fig. 2 and 3, the welding strip cutting device provided in this embodiment further includes a limiting component 4, where the limiting component 4 includes a first limiting component 41 and a second limiting component 42, the first limiting component 41 is disposed on the fixed cutting component 1, the first limiting component 41 can be abutted with a lower end surface of the movable mounting frame 21 to limit the movable cutting component 2 to move towards a limit position far away from the fixed cutting component 1, the second limiting component 42 is disposed on the movable mounting frame 21, and the second limiting component 42 can be abutted with the fixed cutting component 1 to limit the movable cutting component 2 to move towards a limit position near the fixed cutting component 1. The first limiting piece 41 and the second limiting piece 42 are arranged, mechanical limiting is achieved on the lifting movement of the movable cutting assembly 2, and when the movable cutting assembly 2 moves towards the direction close to the fixed cutting assembly 1, the stability and reliability of the lamination of the movable cutting blade 22 and the cutting blade 112 can be guaranteed, and the problem of mutual cutting edges between the movable cutting blade 22 and the cutting blade 112 is prevented.

Referring to fig. 2 and 3, a specific structure of the first limiting member 41 will be described, as shown in fig. 2 and 3, the first limiting member 41 includes a limiting member mounting seat 411 and a limiting screw 412, where the limiting member mounting seat 411 is fixedly mounted on the fixed cutting assembly 1, the limiting screw 412 is in threaded connection with the limiting member mounting seat 411, and a screw head of the limiting screw 412 can be abutted against a lower end face of the movable mounting frame 21. Above-mentioned setting can be through the screw depth of adjusting stop screw 412 in locating part mount pad 411 to the lower terminal surface butt position of adjusting stop screw 412's spiral shell head and flexible mounting frame 21 makes the extreme position to flexible mounting frame 21 decline adjustable, and simple structure adjusts in a flexible way.

In addition, as shown in fig. 2 and 3, the first limiting member 41 further includes a first lock nut 413, the first lock nut 413 is in threaded connection with the screw of the limiting screw 412, and the first lock nut 413 abuts against the end face of the limiting member mounting seat 411, thereby ensuring the stability and reliability of the connection of the limiting screw 412 and the limiting member mounting seat 411. It should be noted that, the screwing direction of the limit screw 412 in the limit member mounting seat 411 is opposite to the screwing direction of the first lock nut 413 on the limit screw 412, so as to ensure the locking effect of the first lock nut 413.

Preferably, as shown in fig. 1 and 2, two first limiting members 41 are disposed at intervals along the left-right direction, and the two first limiting members 41 limit the limiting position of the movable cutting assembly 2 moving away from the fixed cutting assembly 1 together, so that the limiting of the movable cutting assembly 2 is more stable and reliable. It should be noted that, in other embodiments, the specific number of the first limiting members 41 may be set according to the requirement.

In this embodiment, as shown in fig. 3 and 5, the second limiting member 42 includes a limiting screw 421 and a second locking nut 422, where the limiting screw 421 is in threaded connection with the movable mounting frame 21, the upper end of the limiting screw 421 can be abutted against the fixed cutting assembly 1, the second locking nut 422 is in threaded connection with the limiting screw 421, and the second locking nut 422 is abutted against the lower end face of the movable mounting frame 21. Above-mentioned setting can be through the screw depth of adjusting spacing screw 421 in flexible mounting frame 21 to adjust spacing screw 421 and fixed cutting assembly 1 butt position, make the extreme position to flexible mounting frame 21 rise adjustable, and simple structure adjusts in a flexible way. In addition, the arrangement of the second lock nut 422 ensures the stability and reliability of the connection of the limit screw 421 with the flexible mounting rack 21.

Preferably, as shown in fig. 5, two second limiting members 42 are disposed at intervals along the left-right direction, and the two second limiting members 42 limit the movement of the movable cutting assembly 2 toward the direction close to the fixed cutting assembly 1, so that the limitation of the movable cutting assembly 2 is more stable and reliable. It should be noted that, in other embodiments, the specific number of the second limiting members 42 may be set according to the requirement.

In this embodiment, as shown in fig. 3 and 5, the movable mounting frame 21 includes a movable cutter holder 211 and a limiting member fixing seat 214, wherein the movable cutter 22 is rotatably mounted on the movable cutter holder 211, the limiting member fixing seat 214 is fixedly mounted on the movable cutter holder 211, the limiting screw 421 is in threaded connection with the limiting member fixing seat 214, and the second lock nut 422 is abutted to the lower end face of the limiting member fixing seat 214. In addition, in the present embodiment, the screw head of the limiting screw 412 can abut against the lower end surface of the limiting member fixing seat 214, so as to limit the limiting position of the movable cutting assembly 2 in the descending direction.

In this embodiment, as shown in fig. 2 and 5, the elastic member 23 is a spring, the movable mounting frame 21 further includes an elastic member mounting seat 212, the elastic member mounting seat 212 is fixedly mounted on the movable tool rest 211, a first end of the spring is connected with the elastic member mounting seat 212, and a second end of the spring is connected with the movable cutting blade 22. The spring has the advantages of good elastic effect and convenient installation. Preferably, in the present embodiment, two springs are disposed at intervals along the left-right direction, and the two springs together make the movable cutter 22 have a tendency to rotate toward the guide surface 113 with respect to the movable mounting frame 21, so that the consistency of the movement of the movable cutter 22 along the left-right direction (i.e., the extending direction of the movable cutter 22) is ensured. It should be noted that, in other embodiments, the number of the springs may be set according to the requirement, so long as a plurality of springs are ensured to be arranged at intervals along the extending direction of the movable cutting blade 22.

In this embodiment, as shown in fig. 5, the flexible mounting rack 21 further includes a connecting seat 213, the connecting seat 213 is fixedly mounted on the flexible tool rest 211, a mounting groove 2131 is formed on the connecting seat 213, and the output shaft 31 of the driving assembly 3 is in a floating and clamping connection with the mounting groove 2131, so that the output shaft 31 is in floating connection with the flexible mounting rack 21, and a certain mounting error can be allowed in connection between the output shaft 31 and the connecting seat 213, so that the mounting is more convenient.

It should be noted that, as shown in fig. 5, the movable cutting assembly 2 further includes a rotating shaft 24, the rotating shaft 24 is rotatably mounted on the movable cutter holder 211, and an end of the rotating shaft 24 is fixedly connected with the movable cutting blade 22, so that the movable cutting blade 22 is rotatably connected with the movable cutter holder 211. Preferably, both ends of the movable cutting knife 22 along the left-right direction are provided with rotating shafts 24, so that both ends of the movable cutting knife 22 along the left-right direction are rotatably connected with the movable knife rest 211 through the corresponding rotating shafts 24, and the movable cutting knife 22 is more reliably rotatably installed.

In this embodiment, as shown in fig. 1 and 5, the fixed cutting assembly 1 provided in this embodiment further includes a fixed blade holder 13, the fixed blade holder 11 is fixedly mounted on the fixed blade holder 13, the welding strip cutting device further includes a guiding assembly 5, the guiding assembly 5 includes a guide rail 51 and a slider 52 that are slidingly connected, the guide rail 51 extends along the moving direction of the movable cutting blade 22, the guide rail 51 is disposed on the fixed blade holder 13, and the slider 52 is disposed on the movable blade holder 211. By arranging the guide rail 51 and the sliding block 52, a guiding function is provided for the lifting movement of the movable cutting assembly 2, so that the movement of the movable cutting assembly 2 is more stable and reliable. Alternatively, in the present embodiment, the guide members 5 are provided with two sets at intervals in the left-right direction, further improving the stability and reliability of the movement of the movable cutting member 2. In other embodiments, the guide rail 51 may be provided on the movable blade holder 211, and the slider 52 may be provided on the fixed blade holder 13.

In this embodiment, as shown in fig. 3, the upper end portion of the stopper screw 421 can abut against the fixed blade holder 13, thereby restricting the limit position of the movable cutting assembly 2. In the present embodiment, the stopper mount 411 is fixedly attached to the fixed blade holder 13.

The embodiment also provides battery series welding equipment, which comprises a welding device and the welding strip cutting device, wherein the welding device is used for welding the welding strip cut by the welding strip cutting device on a battery piece. The battery series welding equipment provided by the embodiment ensures the welding precision of the battery piece by applying the welding strip cutting device, and further improves the welding quality of the battery piece.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A solder strip cutting device, comprising:

The fixed cutting assembly (1), the fixed cutting assembly (1) comprises a fixed knife (11) and a welding strip baffle plate (12), the fixed knife (11) comprises a cutting knife edge (112) and a guide surface (113) which are positioned on the same plane, the welding strip baffle plate (12) is arranged on the guide surface (113), and the welding strip baffle plate (12) is used for propping against the cutting end of a welding strip; and

The movable cutting assembly (2), the movable cutting assembly (2) comprises a movable mounting frame (21), a movable cutting knife (22) and an elastic piece (23), the movable cutting knife (22) is rotatably mounted on the movable mounting frame (21), the elastic piece (23) is connected between the movable mounting frame (21) and the movable cutting knife (22), the elastic piece (23) is configured to enable the movable cutting knife (22) to rotate relative to the movable mounting frame (21) and enable the movable cutting knife (22) to be abutted to the guide surface (113), and the movable cutting assembly (2) can move towards a direction close to the fixed cutting assembly (1), so that the movable cutting knife (22) moves towards a direction close to the cutting edge (112) along the guide surface (113).

2. The solder strip cutting device according to claim 1, wherein the abutment end surface of the solder strip baffle (12) is on the same horizontal plane as the cutting blade (112).

3. The welding strip cutting device according to claim 1, characterized in that the angle of the cutting edge (221) of the movable cutting blade (22) is β, and that β is 30 ° -60 °; the included angle formed by the cutting edge (221) and the guide surface (113) is alpha, and alpha is more than or equal to 2 degrees and less than or equal to 10 degrees.

4. A solder strip cutting device according to any one of claims 1 to 3, further comprising:

-a driving assembly (3), an output shaft (31) of the driving assembly (3) being connected to the flexible mounting frame (21), the driving assembly (3) being configured to drive the movable cutting assembly (2) towards a direction approaching or away from the fixed cutting assembly (1).

5. The solder strip cutting device according to claim 4, further comprising a limiting assembly (4), the limiting assembly (4) comprising:

A first limiting piece (41), wherein the first limiting piece (41) is arranged on the fixed cutting assembly (1), and the first limiting piece (41) can be abutted against the movable mounting frame (21) so as to limit the movable cutting assembly (2) to move towards a limit position far away from the fixed cutting assembly (1); and

The second limiting piece (42), the second limiting piece (42) is arranged on the movable mounting frame (21), and the second limiting piece (42) can be abutted against the fixed cutting assembly (1) so as to limit the movable cutting assembly (2) to move towards the limit position close to the direction of the fixed cutting assembly (1).

6. The solder strip cutting device according to claim 5, wherein the first stopper (41) comprises:

The limiting piece mounting seat (411) is fixedly mounted on the fixed cutting assembly (1); and

And the limiting screw (412) is in threaded connection with the limiting piece mounting seat (411), and the screw head of the limiting screw (412) can be abutted with the movable mounting frame (21).

7. A welding strip cutting device according to any one of claims 1-3, wherein the resilient member (23) is a spring, and the flexible mounting frame (21) comprises:

The movable knife rest (211), the said movable cutting knife (22) is installed on said movable knife rest (211) rotatably; and

The elastic piece mounting seat (212) is fixedly mounted on the movable tool rest (211), the first end of the spring is connected with the elastic piece mounting seat (212), and the second end of the spring is connected with the movable cutting tool (22).

8. A welding strip cutting device according to any one of claims 1-3, wherein the stationary cutting assembly (1) further comprises a stationary blade holder (13), the stationary blade holder (11) being fixedly mounted on the stationary blade holder (13), the welding strip cutting device further comprising:

The guide assembly (5), the guide assembly (5) includes sliding connection's guide rail (51) and slider (52), guide rail (51) follow the direction of movement of activity cut-off knife (22) extends, guide rail (51) and slider (52) one of them set up on fixed knife rest (13), guide rail (51) and slider (52) the other of them set up on flexible mounting frame (21).

9. A welding strip cutting device according to any one of claims 1-3, wherein the stationary blade (11) further comprises:

The fixed knife comprises a fixed knife main body (111), wherein two end parts of the fixed knife main body (111) extend towards the direction of the movable cutting assembly (2) to form guide arms (1111), one side surface of each guide arm (1111) towards the movable cutting knife (22) is the guide surface (113), the cutting blade (112) is formed on the fixed knife main body (111), and the cutting blade (112) is located between the two guide surfaces (113).

10. A battery string welding apparatus comprising a welding device configured to weld the welding ribbon cut by the welding ribbon cutting device to a battery sheet, and the welding ribbon cutting device according to any one of claims 1 to 9.