Battery cell shell double-end cutting equipment

Abstract

The invention provides battery cell shell double-end cutting equipment, and relates to the technical field, and the equipment comprises a rack, a long edge cutting device and a short edge cutting device; the long edge cutting device comprises a first long edge cutting mechanism and a second long edge cutting mechanism; the first long edge cutting mechanism and the second long edge cutting mechanism each comprise a cutting base, a front-back driving assembly, a cutting support, a cutting driving assembly, a first cutting die and a second cutting die. The cutting support is movably connected to the cutting base through a front-back driving assembly. A cutting positioning socket is formed in one side, close to the battery cell shell, of the cutting bracket, and a mounting space is formed in the cutting bracket; the cutting driving assembly is arranged in the mounting space; the first cutting die and the second cutting die are vertically and movably connected to the cutting driving assembly. The short edge cutting device is used for cutting short plates on the left side and the right side of the two ends of the battery cell shell. The method has the advantage that the overall production efficiency and economic benefits of the battery cell shell are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery cell shell production, and in particular to a double-head cutting device for a battery cell shell. Background Art

[0002] like Fig.10 As shown in the figure, the battery cell housing 8 is produced and processed in the prior art. The battery cell housing 8 is formed into a hollow rectangular parallelepiped by bending an aluminum plate in half, and the two sides of the aluminum plate are welded and fixed after bending.

[0003] At present, in the production process, it is necessary to perform rotary cutting on the openings at the left and right ends of the hollow and rectangular battery cell shell. Existing rotary cutting equipment, for example, a fully automatic double-head rotary cutting machine for new energy battery boxes disclosed in a Chinese invention patent (publication number CN116238007A), comprises a frame, a material rack is provided on the frame, a guide light axis seat is provided on the frame, an outer cutting knife module is movably connected to the guide light axis seat, a rotary cutting module is movably connected to the inner cutting knife module, the rotary cutting module is fixedly connected to a linear pushing mechanism, the linear pushing mechanism is fixedly connected to the frame, a wall breaking driving mechanism is provided on the rotary cutting module, and a rotary cutting driving mechanism is provided on the rotary cutting module; an elastic component is provided on the rotary cutting module, and the elastic component is movably connected to the outer cutting knife module.

[0004] The rotary cutting machine is driven by hydraulic rotation and the rotation of the eccentric wheel drives the rotary cutting tool to perform rotary cutting along the inner circumferential wall of the end opening of the battery cell shell. The structure of the eccentric wheel rotary cutting is relatively complex, and the production cost and difficulty are relatively high. After the rotary cutting machine has been used for a period of time, the eccentric wheel or the rotary cutting tool will cause a certain degree of wear and tear, and the entire rotary cutting structure needs to be adjusted and maintained regularly, resulting in high maintenance costs. At the same time, due to the high processing accuracy requirements of rotary cutting, the overall processing speed will be slower through rotary cutting, affecting the overall processing efficiency and ultimately affecting the economic benefits of producing battery cell shells. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing rotary cutting equipment has a complex structure through an eccentric wheel, large losses, low production costs and production efficiency, which affects the economic benefits of producing battery cell shells. In order to overcome the defects of the above-mentioned prior art, the present invention provides a long side cutting device and a short side cutting device to separate the rotary cutting action into two cutting actions, one of which is to quickly cut the long sides of the upper and lower sides of the battery cell shell, and the other is to quickly cut the short sides of the left and right sides of the battery cell shell. The structure of the two cuttings is simple and ingenious, which reduces costs and facilitates maintenance. In addition, the speed of the two cuttings is much greater than the speed of the rotary cutting, which greatly improves the overall efficiency and economic benefits of producing battery cell shells.

[0006] For the purpose of the present invention, the following technical solutions are adopted to achieve the goal:

[0007] A double-head cutting device for a battery cell shell, comprising a frame, a long side cutting device and a short side cutting device; the long side cutting device comprises a first long side cutting mechanism and a second long side cutting mechanism; the first long side cutting mechanism and the second long side cutting mechanism are relatively distributed and symmetrically arranged on the front and rear sides of the frame; the first long side cutting mechanism and the second long side cutting mechanism each comprise a cutting base, a front and rear drive assembly, a cutting bracket, a cutting drive assembly, a first cutting die and a second cutting die; the cutting base is arranged on the frame, and the cutting bracket is connected to the cutting base by the front and rear drive assembly to move forward and backward; a cutting bracket is arranged on the cutting bracket close to the battery cell shell The cutting positioning socket is provided, and the cutting bracket is provided with an installation space for installing the cutting drive assembly; the installation space is vertically distributed and communicated with the cutting positioning socket; the cutting drive assembly is provided in the installation space; the first cutting die and the second cutting die are respectively connected to the cutting drive assembly in a vertically movable manner, and the cutting positions of the first cutting die and the second cutting die correspond to the cutting positioning socket; the cutting drive assembly is used to simultaneously drive the first cutting die and the second cutting die to move in relative or opposite directions to realize the cutting of the long plates on the upper and lower sides of one end of the battery shell; the short side cutting device is used to cut the short plates on the left and right sides of the two ends of the battery shell. The device replaces the existing rotary cutting method with the long side cutting device and the short side cutting device, and transforms the rotary action into two cutting actions, one of which is to quickly cut the long plates on the upper and lower sides of the battery shell, and the other is to quickly cut the short plates on the left and right sides of the battery shell, simplifying the entire cutting structure, reducing costs and facilitating maintenance, and through two separate cuttings, the cutting track is fast and convenient, and the cutting efficiency is much greater than the speed of rotary cutting, which greatly improves the efficiency and economic benefits of the overall production of battery shells.

[0008] Preferably, the cutting bracket includes a first vertical support plate, a second vertical support plate and a first front-rear connecting plate and a second front-rear connecting plate; the first vertical support plate and the second vertical support plate are arranged in parallel, and the first vertical support plate is located inside the second vertical support plate; the left side of the first vertical support plate is fixedly connected to the left side of the second vertical support plate through the first front-rear connecting plate; the right side of the first vertical support plate is fixedly connected to the right side of the second vertical support plate through the second front-rear connecting plate, and the installation space is surrounded by the first vertical support plate, the second vertical support plate and the first front-rear connecting plate and the second front-rear connecting plate; the cutting positioning socket is horizontally penetrated in the middle of the first vertical support plate; the cutting positioning socket is flared from the inside to the outside, and the outer edge of the cutting positioning socket is provided with an arc chamfer. In the above structure, the cutting bracket is assembled by four plates, which is convenient for forming an installation space, thereby facilitating the installation of the cutting drive assembly, and at the same time, the insertion of the battery shell is facilitated by the cutting positioning socket, preventing the battery shell from causing interference during insertion, and ensuring subsequent precise cutting.

[0009] Preferably, the cutting drive assembly includes a cutting drive motor, a cutting drive shaft, a first cutting sleeve, a second cutting sleeve, a first cutting template and a second cutting template; the cutting drive motor is vertically arranged on the cutting bracket, one end of the cutting drive shaft is connected to the output shaft of the cutting drive motor, and the other end of the cutting drive shaft is rotatably connected to the cutting bracket; the first cutting sleeve and the second cutting sleeve are respectively sleeved on the cutting drive shaft, and the first cutting sleeve and the second cutting sleeve are respectively threadedly connected to the cutting drive shaft, and the threads of the first cutting sleeve and the second cutting sleeve are arranged in reverse; the first cutting template is arranged on the first cutting sleeve, and a first cutting slide rail is arranged between the first cutting template and the second vertical support plate; the first cutting die is arranged on the first cutting template; the second cutting template is arranged on the second cutting sleeve, and a second cutting slide rail is arranged between the second cutting template and the second vertical support plate; the second cutting die is arranged on the second cutting template; the up and down translation of the first cutting die and the second cutting die is realized by the rotation of the cutting drive shaft. The above structure drives the cutting drive shaft to rotate through the cutting drive motor, and then the first cutting sleeve and the second cutting sleeve are respectively threadedly connected to the cutting drive shaft, so that the first cutting sleeve and the second cutting sleeve are converted from rotational motion to linear motion, and then the first cutting template and the second cutting template respectively drive the first cutting die and the second cutting die to achieve relative movement or opposite movement, and the first cutting die and the second cutting die are first merged and inserted into the battery cell shell, and then the first cutting die and the second cutting die are opened in opposite directions, so as to quickly cut off the upper and lower long plates of the battery cell shell from the inside to the outside.

[0010] Preferably, the first knife die and the second knife die are symmetrically arranged in the upper and lower parts and have the same structure; a cutting slot is arranged at the bottom of the first knife die near one side wall of the battery shell; a cutting knife block protruding toward the battery shell is arranged at the bottom of the cutting slot, and when cutting, the cutting knife block is inserted into one end of the battery shell, and the blade surface of the cutting knife block contacts the inner wall of the long plate of the battery shell. Through the concave-convex matching of the cutting slot and the cutting knife block, the battery shell can be easily inserted into the cutting slot, and the cutting knife block can also be extended into the battery shell, which is convenient for subsequent cutting.

[0011] Preferably, the inner wall of the first vertical support plate and the left and right sides of the cutting positioning socket are provided with short-side knife blocks; a U-shaped positioning blade is provided on one side wall of the short-side knife block close to the cutting positioning socket; when the cutting knife block on the first knife die and the cutting knife block on the second knife die are fitted, the top surface of the cutting knife block on the first knife die is lower than the upper end of the positioning blade; the bottom surface of the cutting knife block on the second knife die is lower than the lower end of the positioning blade. The positioning blade on the short-side knife block cooperates with the cutting slot to limit the battery cell shell. At the same time, during the cutting process, it is also convenient to limit the short plates on the left and right sides of the battery cell shell, so that the long sides of the upper and lower sides of the battery cell shell can be cut better, ensuring that the cutting separation point is handled more cleanly during the cutting process.

[0012] Preferably, a dust blowing mechanism for removing dust from the surface of the battery cell shell is provided on one lateral side of the first long side cutting mechanism and the second long side cutting mechanism on the frame; a material receiving mechanism for collecting waste after cutting is provided on the other lateral side of the first long side cutting mechanism and the second long side cutting mechanism on the frame; the dust blowing mechanism can blow away debris and dust on the surface of the battery cell shell that has been transported, to prevent the cutting accuracy from being affected, and the material receiving mechanism can facilitate the recovery of the waste after cutting, thereby ensuring the cleanliness of the equipment table and facilitating subsequent unified processing.

[0013] Preferably, the short side cutting device comprises a first short side cutting mechanism and a second short side cutting mechanism; the first short side cutting mechanism and the second short side cutting mechanism are relatively distributed and symmetrically arranged on the front and rear sides of the frame; the first short side cutting mechanism is used to cut the short plates on the left and right sides of one end of the battery cell shell; the second short side cutting mechanism is used to cut the short plates on the left and right sides of the other end of the battery cell shell. The short side cutting device cuts the short plates on the left and right sides of the battery cell shell in the same processing method as the long side cutting device.

[0014] As a preferred method, it also includes a conveying device for conveying the battery shell, the conveying device includes a conveying bracket, a conveyor belt drive motor, a driving gear, a driven gear, a transmission chain and several conveying carriers; a conveying gap is set on the frame between the first long side cutting mechanism and the second long side cutting mechanism; the outer edge of the conveying bracket is runway-shaped, and the conveying bracket is set on the frame and located in the conveying gap; the conveyor belt drive motor is set on one side of the conveying bracket, and the driving shaft of the conveyor belt drive motor passes through the conveying bracket and is connected to the driving gear; the driven gear is rotatably connected to the other side of the conveying bracket; the transmission chain is tensioned and connected to the driving gear and the driven gear; several conveying carriers are arranged on the transmission chain at intervals, and the conveying carriers are circulated along the outer edge of the conveying bracket. The device realizes conveying by means of a transmission chain, so that the conveying carriers on the transmission chain can realize cyclic flow, and then the battery shells can be placed one by one on each conveying carrier for conveying, without the need for manual placement one by one and without the need for transferring the manipulator to grab back and forth, saving conveying space, and at the same time greatly improving the loading efficiency, and further improving the production efficiency of the battery shell.

[0015] Preferably, the front and rear side surfaces of the conveying bracket are both provided with runway-type slide rails along the conveying bracket; the conveying carrier includes a conveying base and a conveying carrier plate; the conveying base is in a U-shape with an opening downward, and the conveying base includes a first side plate, a second side plate and a connecting plate; the lower part of the first side plate of the conveying base is fixedly connected to the transmission chain, and the upper part of the first side plate is provided with a first pulley matching the runway-type slide rail; the upper part of the second side plate of the conveying base is provided with a second pulley matching the runway-type slide rail; the connecting plate is connected to the first Between the top of one side plate and the second side plate, the conveying carrier is horizontally arranged on the connecting plate, and the front and rear sides of the conveying carrier are both provided with limit blocks that match the battery cell shell; the frame is also provided with a shell pressing assembly for fixing the battery cell shell at the long side cutting device and the short side cutting device; the shell pressing assembly includes a plurality of spaced-apart clamping cylinders, each of which is arranged vertically, and the cylinder body of the clamping cylinder is fixed on the frame, and the telescopic rod at the bottom of the clamping cylinder is fixedly connected with a clamping plate for clamping the battery cell shell. The conveying base in the above structure can further improve the connection strength and support stability through the U-shaped structure, ensuring that the battery cell shell can be stably placed on the conveying carrier and transported stably, and at the same time, the first pulley and the second pulley are respectively located on both sides of the runway-type slide rail, which can ensure the smoothness and smoothness of the conveying, and can also ensure the stability and support during the overall sliding process, further ensuring the stability and accuracy of the entire loading process.

[0016] Preferably, at least one conveying positioning assembly is further provided on one side surface of the conveying bracket; the conveying positioning assembly includes a positioning drive member, a positioning drive swing arm and a positioning shaft; the positioning drive member is arranged on the outer wall of the conveying bracket, and the positioning shaft is rotatably connected to the outer wall of the conveying bracket through two positioning seats; one end of the positioning drive swing arm is rotatably connected to the driving part of the positioning drive member, and the other end of the positioning drive swing arm is fixed on the positioning shaft; a plurality of positioning rods are arranged at intervals on the positioning shaft, and a positioning plate is provided on a side plate of the conveying base close to the positioning rod; a positioning recess is provided on the positioning plate; a positioning roller is provided at the end of the positioning rod to be positioned and matched with the positioning recess; during positioning, the positioning roller is clamped into the positioning recess by swinging the positioning rod to achieve positioning. The positioning drive swing arm can be driven to rotate by the positioning drive component in the form of a cylinder, so that the positioning rod on the positioning shaft can rotate. Each time a workstation is moved, the positioning roller on the positioning rod is turned into the positioning recess, thereby ensuring that each movement of the conveying carrier is accurate. The accuracy of each movement can be accurately guaranteed, and there will be no problem of failure in battery cell shell processing or transportation due to errors in movement, further ensuring the accuracy of mobile positioning, thereby ensuring the accuracy of the entire processing.

[0017] To sum up, the advantage of the present invention is that the equipment replaces the existing rotary cutting method with a long side cutting device and a short side cutting device, and converts the rotary action into two cutting actions, one of which is to quickly cut the long plates on the upper and lower sides of the battery cell shell, and the other is to quickly cut the short plates on the left and right sides of the battery cell shell, thereby simplifying the entire cutting structure, reducing costs and facilitating maintenance, and through two separate cuttings, the cutting trajectory is fast and convenient, and the cutting efficiency is much greater than the speed of rotary cutting, which greatly improves the overall efficiency and economic benefits of producing battery cell shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the double-head cutting equipment for battery cell shells of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the long edge cutting device of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the front and rear drive components of the present invention.

[0021] Figure 4 is an exploded view of the cutting drive assembly of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the first cutting die and the second cutting die of the present invention.

[0023] Figure 6It is a schematic structural diagram of the short edge cutting device of the present invention.

[0024] Figure 7 It is a schematic structural diagram of the feeding end of the conveying device of the present invention.

[0025] Figure 8 It is a structural schematic diagram of the discharge end of the conveying device of the present invention.

[0026] Fig. 9 It is a schematic structural diagram of the transport vehicle of the present invention.

[0027] Fig.10 It is a structural schematic diagram of an existing battery cell shell.

[0028] Description of reference numerals:

[0029] 1. Long side cutting device; 101. First long side cutting mechanism; 102. Second long side cutting mechanism; 10. Installation space; 11. Cutting base; 12. Front and rear drive assembly; 121. Front and rear drive motor; 122. Front and rear drive shaft; 123. Shaft sleeve; 124. Front and rear drive platform; 125. Front and rear moving slide rail; 13. Cutting bracket; 131. First vertical support plate; 132. Second vertical support plate; 133. First front and rear connecting plate; 134. Second front and rear connecting plate; 135. Short side knife block; 136. Positioning knife edge; 14. Cutting positioning socket; 15. Cutting drive assembly; 151. Cutting drive motor; 152. Cutting drive shaft; 153. First cutting sleeve; 154. Second cutting sleeve; 155. First cutting template; 156. Second cutting template; 16. First knife die; 161. Cutting slot; 162. Cutting knife block; 17, second cutting die; 2, short side cutting device; 201, first short side cutting mechanism; 202, second short side cutting mechanism; 3, conveying device; 31, conveying bracket; 32, conveyor belt driving motor; 33, driving gear; 34, driven gear; 35, transmission chain; 36, runway type slide rail; 37, conveying base; 371, first side plate; 372, second side plate; 373, connecting plate; 374, first pulley; 375, first Two pulleys; 376, positioning plate; 377, positioning notch; 38, conveying carrier; 381, limit block; 39, conveying positioning assembly; 391, positioning drive member; 392, positioning drive swing arm; 393, positioning shaft; 394, positioning seat; 395, positioning rod; 396, positioning roller; 4, conveying neutral position; 5, dust blowing mechanism; 6, material receiving mechanism; 7, shell pressing assembly; 71, clamping cylinder; 72, pressing plate; 8, battery cell shell. DETAILED DESCRIPTION

[0030] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0031] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0032] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Fig.10 As shown in the figure, the battery cell shell 8 to be cut in the present application is placed on the conveying device 3 in the front-to-back direction. The conveying device 3 conveys the battery cell shell 8 horizontally from right to left, and conveys it to the long side cutting device 1 and the short side cutting device 2 in sequence. The long side cutting device 1 and the short side cutting device 2 cut the front and back ends of the battery cell shell 8 respectively.

[0035] like Figures 1 to 9As shown, a double-head cutting device for a cell shell includes a frame, a long side cutting device 1, a short side cutting device 2 and a conveying device 3; in this embodiment, the long side cutting device 1 is located at the feeding end side (right side) of the short side cutting device 2, and first cuts the upper and lower long plates of the cell shell 8, and then cuts the left and right short plates of the cell shell 8. The long side cutting device 1 includes a first long side cutting mechanism 101 and a second long side cutting mechanism 102; the first long side cutting mechanism 101 and the second long side cutting mechanism 102 are relatively distributed and symmetrically arranged on the front and rear sides of the frame; the first long side cutting mechanism 101 and the second long side cutting mechanism 102 both include a cutting base 11, a front and rear driving assembly 12, a cutting bracket 13, a cutting driving assembly 15, a first cutting die 16 and a second cutting die 17; the cutting base 11 is horizontally arranged on the frame, and the cutting bracket 13 is connected to the cutting base 11 by the front and rear driving assembly 12 to move forward and backward, and the cutting bracket 13 is arranged vertically. A cutting positioning socket 14 is provided on the cutting bracket 13 near the battery shell 8, and an installation space 10 for installing a cutting drive assembly 15 is provided in the cutting bracket 13; the installation space 10 is vertically distributed and communicated with the cutting positioning socket 14, and the cutting drive assembly 15 is arranged in the installation space 10, so as to facilitate the cutting drive assembly 15 to realize vertical cutting action in the installation space 10. The first cutting die 16 and the second cutting die 17 are respectively connected to the cutting drive assembly 15 in a vertically movable manner, and the cutting positions of the first cutting die 16 and the second cutting die 17 correspond to the cutting positioning socket 14; the cutting drive assembly 15 is used to simultaneously drive the first cutting die 16 and the second cutting die 17 to move in opposite or opposite directions to realize the cutting of the long plates on the upper and lower sides of one end of the battery shell 8; the short side cutting device 2 is used to cut the short plates on the left and right sides of the two ends of the battery shell 8, and the conveying device 3 is used to convey the battery shells 8 one by one to the long side cutting device 1 and the short side cutting device 2 in sequence. The equipment replaces the existing rotary cutting method with a long side cutting device 1 and a short side cutting device 2, and converts the rotary action into two cutting actions, one of which is to quickly cut the long plates on the upper and lower sides of the battery cell shell 8, and the other is to quickly cut the short plates on the left and right sides of the battery cell shell 8, thereby simplifying the entire cutting structure, reducing costs and facilitating maintenance. In addition, through two separate cuttings, the cutting trajectory is fast and convenient, and the cutting efficiency is much greater than the speed of rotary cutting, which greatly improves the overall efficiency and economic benefits of producing battery cell shells 8.

[0036] like Figure 1 and Figure 2As shown, the front-to-back drive assembly 12 includes a front-to-back drive motor 121, a front-to-back drive shaft 122, a shaft sleeve 123, and a front-to-back drive platform 124; the front-to-back drive motor 121 is arranged on the cutting base 11 in the front-to-back direction, one end of the front-to-back drive shaft 122 is fixedly connected to the output end of the front-to-back drive motor 121, and the other end of the front-to-back drive shaft 122 is rotatably connected to the cutting base 11 through a shaft seat; the shaft sleeve 123 is sleeved on the front-to-back drive shaft 122, and the shaft sleeve 123 is threadedly connected to the front-to-back drive shaft 122, and the rotational motion is converted into horizontal movement through thread matching, thereby realizing the front-to-back movement; the front-to-back drive platform 124 is fixed on the shaft sleeve 123, and a front-to-back moving slide rail 125 is arranged between the bottom surface of the front-to-back drive platform 124 and the top surface of the cutting base 11, and the front-to-back moving slide rail 125 further ensures the smoothness of the sliding of the front-to-back drive platform 124. The front-to-back drive shaft 122 is rotated to realize the front-to-back movement and positioning of the front-to-back drive platform 124. The front and rear drive motors 121 are used to drive the front and rear drive shafts 122 to rotate. Due to the threaded fit between the shaft sleeve 123 and the front and rear drive shafts 122, the shaft sleeve 123 is converted from rotational motion to linear motion, thereby driving the front and rear drive platforms 124 to position in the front and rear directions, ultimately ensuring that both ends of the battery cell housing 8 are accurately inserted into the first long side cutting mechanism 101 and the second long side cutting mechanism 102.

[0037] like Figures 1 to 4 As shown, the cutting bracket 13 includes a first vertical support plate 131, a second vertical support plate 132, a first front-rear connecting plate 133 and a second front-rear connecting plate 134; the first vertical support plate 131 and the second vertical support plate 132 are arranged in parallel front and back, and the first vertical support plate 131 is located on the inner side of the second vertical support plate 132; the left side of the first vertical support plate 131 is fixedly connected with the left side of the second vertical support plate 132 through the first front-rear connecting plate 133; the right side of the first vertical support plate 131 is fixedly connected with the right side of the second vertical support plate 132 through the second front-rear connecting plate 134, and the first vertical support plate 131, the second vertical support plate 132 and the first front-rear connecting plate 133 and the second front-rear connecting plate 134 form an installation space 10; the cutting positioning socket 14 is horizontally penetrated and arranged in the middle of the first vertical support plate 131; the cutting positioning socket 14 is flared from the inside to the outside, and the outer edge of the cutting positioning socket 14 is provided with a circular arc chamfer. In the above structure, the cutting bracket 13 is assembled by four plates to form a hollow installation space 10, which facilitates the installation of the cutting drive assembly 15. At the same time, the insertion of the battery cell housing 8 is facilitated by the cutting positioning socket 14, preventing the battery cell housing 8 from causing interference during insertion, thereby ensuring subsequent precise cutting.

[0038] like Figure 4As shown, the cutting drive assembly 15 includes a cutting drive motor 151, a cutting drive shaft 152, a first cutting sleeve 153, a second cutting sleeve 154, a first cutting template 155 and a second cutting template 156; the cutting drive motor 151 is vertically arranged on the top of the second vertical support plate 132, the upper end of the cutting drive shaft 152 is fixedly connected to the output shaft of the cutting drive motor 151, and the lower end of the cutting drive shaft 152 is rotatably connected to the cutting bracket 13 through a shaft seat; the first cutting sleeve 153 and the second cutting sleeve 154 are respectively sleeved on the cutting drive shaft 152, and the first cutting sleeve 153 and the second cutting sleeve 154 are respectively threadedly connected to the cutting drive shaft 152, and the threads of the first cutting sleeve 153 and the second cutting sleeve 154 are reversely arranged, and the rotational motion can be converted into linear motion through thread matching, and the first cutting sleeve 153 and the second cutting sleeve 154 can be moved in opposite or relative directions when combined with opposite threads. The first cutting template 155 is arranged on the first cutting sleeve 153, and a first cutting slide rail is arranged between the first cutting template 155 and the second vertical support plate 132; the first cutting die 16 is arranged on the first cutting template 155; the second cutting template 156 is arranged on the second cutting sleeve 154, and a second cutting slide rail is arranged between the second cutting template 156 and the second vertical support plate 132; in this embodiment, the second cutting slide rail and the first cutting slide rail share a common slide rail, which can ensure the sliding alignment of the first cutting template 155 and the second cutting template 156, and the second cutting die 17 is arranged on the second cutting template 156; the first cutting die 16 and the second cutting die 17 are realized by the rotation of the cutting drive shaft 152. Up and down translation. The above structure drives the cutting drive shaft 152 to rotate through the cutting drive motor 151, so that the first cutting sleeve 153 and the second cutting sleeve 154 are respectively threadedly connected to the cutting drive shaft 152, so that the first cutting sleeve 153 and the second cutting sleeve 154 are converted from rotational motion to linear motion, and then the first cutting template 155 and the second cutting template 156 respectively drive the first cutting die 16 and the second cutting die 17 to achieve relative movement or opposite movement, and the first cutting die 16 and the second cutting die 17 are first combined and inserted into the battery cell shell 8, and then the first cutting die 16 and the second cutting die 17 are opened in opposite directions to quickly cut off the upper and lower long plates of the battery cell shell 8 from the inside to the outside.

[0039] like Figure 4 and Figure 5As shown, the first knife die 16 and the second knife die 17 are symmetrically arranged in the upper and lower parts and have the same structure; a cutting slot 161 is arranged at the bottom of the first knife die 16 near the side wall of the battery shell 8; a cutting knife block 162 protruding toward the battery shell 8 is arranged at the bottom of the cutting slot 161. When cutting, the cutting knife block 162 is inserted into one end of the battery shell 8, and the blade surface of the cutting knife block 162 contacts the inner wall of the long plate of the battery shell 8. Through the concave-convex cooperation between the cutting slot 161 and the cutting knife block 162, the battery shell 8 can be conveniently inserted into the cutting slot 161, and the cutting knife block 162 can also be extended into the battery shell 8, which is convenient for subsequent cutting. Short side knife blocks 135 are provided on the inner wall of the first vertical support plate 131 and on the left and right sides of the cutting positioning socket 14; a U-shaped positioning blade 136 is provided on one side wall of the short side knife block 135 close to the cutting positioning socket 14; when the cutting knife block 162 on the first knife die 16 and the cutting knife block 162 on the second knife die 17 are fitted together, the top surface of the cutting knife block 162 on the first knife die 16 is lower than the upper end of the positioning blade 136; the bottom surface of the cutting knife block 162 on the second knife die 17 is lower than the lower end of the positioning blade 136, thereby ensuring that the two cutting knife blocks 162 are in a fitted state, so that the two cutting knife blocks 162 can be inserted into the battery cell shell 8, thereby facilitating the subsequent cutting of the battery cell shell 8 from the inside to the outside. The positioning blade 136 on the short side blade block 135 can surround the short plates on the left and right sides of the battery cell shell 8, and can limit the battery cell shell 8 in cooperation with the cutting slot 161. At the same time, during the cutting process, it is also convenient to limit the short plates on the left and right sides of the battery cell shell 8, so that the long sides of the upper and lower sides of the battery cell shell 8 can be better cut, ensuring that the cutting separation point is handled more cleanly during the cutting process.

[0040] like Figure 1 As shown, a dust blowing mechanism 5 for removing dust from the surface of the battery shell 8 is provided on the lateral side of the first long side cutting mechanism 101 and the second long side cutting mechanism 102 on the frame; the dust blowing mechanism 5 is a plurality of air blowing pipes, and each air blowing pipe is connected to the air blowing device, which can blow air to the two ends of the battery shell 8 inserted through the air blowing pipe to blow away the debris and dust on the surface, so as to facilitate better cutting. A material receiving mechanism 6 for collecting the waste after cutting is provided on the other lateral side of the first long side cutting mechanism 101 and the second long side cutting mechanism 102 on the frame, and the material receiving mechanism 6 is a hollow material receiving pipe, which facilitates the waste after cutting to flow into the material receiving pipe for unified recycling. The dust blowing mechanism 5 can blow away the debris and dust on the surface of the battery shell 8 transported over to prevent the cutting accuracy from being exceeded, and the material receiving mechanism 6 is convenient for recycling the waste after cutting, ensuring the cleanliness of the equipment table and facilitating subsequent unified processing.

[0041] like Figure 1 and Figure 6 As shown, the short side cutting device 2 includes a first short side cutting mechanism 201 and a second short side cutting mechanism 202; the first short side cutting mechanism 201 and the second short side cutting mechanism 202 are relatively distributed and symmetrically arranged on the front and rear sides of the frame; the first short side cutting mechanism 201 is used to cut the short plates on the left and right sides of one end of the battery shell 8; the second short side cutting mechanism 202 is used to cut the short plates on the left and right sides of the other end of the battery shell 8. The short side cutting device 2 cuts the short plates on the left and right sides of the battery shell 8 in the same processing method as the long side cutting device 1. In terms of structure, the short side cutting device 2 only changes the cutting bracket 13 and the cutting drive assembly 15 originally arranged vertically into a horizontal arrangement, and also uses two cutting dies to quickly cut the short plates on the left and right sides of the battery shell 8 from the inside to the outside, so as to achieve cutting of all four sides of the rectangular battery shell 8, changing the problem of complex structure and low efficiency of the existing rotary cutting, further improving cutting efficiency and reducing costs.

[0042] like Figures 7 to 9 As shown, a conveying gap 4 is provided between the first long edge cutting mechanism 101 and the second long edge cutting mechanism 102 on the frame; the conveying device 3 is located between the first long edge cutting mechanism 101 and the second long edge cutting mechanism 102, and is located in the conveying gap 4. The conveying device 3 includes a conveying bracket 31, a conveyor belt driving motor 32, a driving gear 33, a driven gear 34, a transmission chain 35 and a plurality of conveying carriers; the outer edge of the conveying bracket 31 is in a runway shape, and the conveying bracket 31 is arranged on the frame in the left and right directions and is located in the conveying gap 4, so as to realize left and right direction circular conveying. The conveyor belt driving motor 32 is arranged on the left side of the conveying bracket 31, and the driving shaft of the conveyor belt driving motor 32 passes through the conveying bracket 31 and is connected to the driving gear 33; the driven gear 34 is rotatably connected to the right side of the conveying bracket 31; the transmission chain 35 is tensionedly connected to the driving gear 33 and the driven gear 34; a plurality of conveying carriers are arranged on the transmission chain 35 at intervals, and the conveying carriers are circularly conveyed along the outer edge of the conveying bracket 31. The conveying device 3 realizes conveying by means of a transmission chain 35, so that the conveying carrier on the transmission chain 35 can realize circulation flow, and then each battery cell shell 8 can be placed one by one on each conveying carrier for conveying, without the need for manual placement one by one or the need for transferring the robot to grab back and forth, thus saving conveying space, and also greatly improving the loading efficiency, further improving the production efficiency of the battery cell shell 8.

[0043] like Figures 7 to 9As shown, runway-type slide rails 36 are arranged along the front and rear side surfaces of the conveying bracket 31; the conveying carrier includes a conveying base 37 and a conveying carrier plate 38; the conveying base 37 is in a U-shape with an opening downward, and the conveying base 37 includes a first side plate 371, a second side plate 372 and a connecting plate 373; the lower part of the first side plate 371 of the conveying base 37 is fixedly connected to the transmission chain 35, and the upper part of the first side plate 371 is provided with two first pulleys 374 that cooperate with the runway-type slide rail 36; the upper part of the second side plate 372 of the conveying base 37 is provided with two second pulleys 375 that cooperate with the runway-type slide rail 36, and the connecting plate 373 is connected between the top of the first side plate 371 and the second side plate 372, so as to limit the conveying base 37 and slideably connect it to the runway-type slide rail 36. The conveying carrier 38 is horizontally arranged on the connecting plate 373. The front and rear sides of the conveying carrier 38 are provided with limit blocks 381 that match the battery shell 8. Each conveying carrier 38 is provided with four L-shaped limit blocks 381, and the four limit blocks 381 are respectively arranged at the four corners of the conveying carrier 38, which can limit and support the bottom of the battery shell 8. The conveying base 37 can further improve the connection strength and support stability through the U-shaped structure, ensuring that the battery shell 8 can be stably placed on the conveying carrier 38 and transported stably. At the same time, the first pulley 374 and the second pulley 375 are respectively located on both sides of the runway-type slide rail 36, which can ensure the smoothness and smoothness of the transportation, and can also ensure the stability and support during the overall sliding process, and further ensure the stability and accuracy of the entire loading process.

[0044] like Figure 1 As shown, a shell pressing assembly 7 for fixing the battery cell shell 8 is also provided on the frame at the long side cutting device 1 and the short side cutting device 2; the shell pressing assembly 7 includes a plurality of spaced pressing cylinders 71, each of which is arranged vertically, and the cylinder body of the pressing cylinder 71 is fixed on the frame, and the telescopic rod at the bottom of the pressing cylinder 71 is fixedly connected with a pressing plate 72 for pressing the battery cell shell 8. The pressing plate 72 is driven down by the pressing cylinder 71, so that the battery cell shell 8 is pressed on the conveying carrier 38, ensuring stability and firmness during cutting.

[0045] like Figures 6 to 9As shown, at least one conveying positioning assembly 39 is also provided on one side surface of the conveying bracket 31; in this embodiment, there are three conveying positioning assemblies 39, each conveying positioning assembly 39 includes a positioning drive member 391, a positioning drive swing arm 392 and a positioning shaft 393; the positioning drive member 391 is provided on the outer wall of the conveying bracket 31, and the positioning shaft 393 is rotatably connected to the outer wall of the conveying bracket 31 through two positioning seats 394; one end of the positioning drive swing arm 392 is rotatably connected to the driving part of the positioning drive member 391, and the other end of the positioning drive swing arm 392 is fixed to the positioning shaft 393; three positioning rods 395 are arranged at intervals on the positioning shaft 393, and a positioning plate 376 is provided on a side plate of the conveying base 37 located near the positioning rod 395; a positioning recess 377 is provided on the positioning plate 376; a positioning roller 396 is provided at the end of the positioning rod 395 to be positioned and matched with the positioning recess 377; when positioning, the positioning roller 396 is clamped into the positioning recess 377 by swinging the positioning rod 395 to achieve positioning. The positioning drive swing arm 392 can be driven to rotate by the positioning drive member 391 in the form of a cylinder, so that the positioning rod 395 on the positioning shaft 393 can rotate. Each time the distance of one workstation is moved, the positioning roller 396 on the positioning rod 395 is turned into the positioning recess 377, thereby ensuring that each movement of the conveying vehicle is accurate, and thus being able to accurately guarantee the accuracy of each movement, and preventing the problem of failure in processing or conveying the battery cell shell 8 due to errors in movement, further ensuring the accuracy of the mobile positioning, thereby ensuring the accuracy of the entire processing.

[0046] When the equipment is working, the battery cell shells 8 are transported to the conveying carrier 38 of the conveying carrier one by one through the robot arm, and are limited by four limit blocks 381. The conveyor belt drive motor 32 is driven to rotate, so that under the action of the driving gear 33, the driven gear 34 and the transmission chain 35, one of the conveying carriers equipped with the battery cell shells 8 is transported to between the first long edge cutting mechanism 101 and the second long edge cutting mechanism 102, and the positioning shaft 393 is driven to rotate by the positioning drive member 391 on the conveying positioning component 39, so that the positioning roller 396 is again inserted into the positioning recess 377, finally ensuring the accurate positioning of the conveying carrier 38 to prevent the deviation of the conveying displacement and the processing error.

[0047] After conveying and positioning, the first long side cutting mechanism 101 and the second long side cutting mechanism 102 drive the front and rear driving shafts 122 through the front and rear driving motors 121 in the front and rear driving components 12 to make the front and rear driving platforms 124 approach the battery cell shell 8, so that the two ends of the battery cell shell 8 are respectively inserted into the cutting positioning sockets 14, so that the cutting knife blocks 162 of the first cutting die 16 and the cutting knife blocks 162 of the second cutting die 17 are attached to and extended into the battery cell shell 8 until the battery cell shell 8 reaches the specified cutting position. After positioning, the pressing plate 72 is pressed down by the clamping cylinder 71 on the shell pressing component 7 to clamp and fix the battery cell shell 8, and at the same time, the two ends of the battery cell shell 8 are dusted by the dust blowing mechanism 5.

[0048] After clamping and fixing, the cutting drive shaft 152 is driven to rotate by the cutting drive motor 151, so that the cutting knife block 162 on the first cutting die 16 and the cutting knife block 162 on the second cutting die 17 move in opposite directions, thereby realizing rapid cutting of the long plates on the upper and lower sides of the battery cell shell 8.

[0049] After the long board is cut, the first long side cutting mechanism 101 and the second long side cutting mechanism 102 are withdrawn from the battery cell housing 8 to both sides, and the positioning drive member 391 on the conveying positioning assembly 39 drives the positioning shaft 393 to rotate in the form of a driving cylinder, so that the positioning roller 396 on the positioning rod 395 is disengaged from the positioning recess 377, and the conveying carrier 38 can be synchronously conveyed along with the transmission chain 35 to the next workstation.

[0050] The cut battery cell shell 8 is moved between the first short side cutting mechanism 201 and the second short side cutting mechanism 202 by the conveying device 3. The first short side cutting mechanism 201 and the second short side cutting mechanism 202 quickly cut the short plates on the left and right sides of the battery cell shell 8 in the same way, and finally the four sides at both ends of the battery cell shell 8 are completely cut, so that the battery cell shell 8 reaches the desired length.

[0051] The advantage of the present invention is that the equipment replaces the existing rotary cutting method with a long side cutting device 1 and a short side cutting device 2, and converts the rotary action into two cutting actions, one of which is to quickly cut the long plates on the upper and lower sides of the battery cell shell 8, and the other is to quickly cut the short plates on the left and right sides of the battery cell shell 8, thereby simplifying the entire cutting structure, reducing costs and facilitating maintenance. In addition, through two separate cuttings, the cutting trajectory is fast and convenient, and the cutting efficiency is much greater than the speed of rotary cutting, which greatly improves the overall efficiency and economic benefits of producing battery cell shells 8.

[0052] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0053] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A double-head cutting device for a battery cell shell, characterized in that: The invention comprises a frame, a long side cutting device (1) and a short side cutting device (2); the long side cutting device (1) comprises a first long side cutting mechanism (101) and a second long side cutting mechanism (102); the first long side cutting mechanism (101) and the second long side cutting mechanism (102) are relatively distributed and symmetrically arranged on the front and rear sides of the frame; the first long side cutting mechanism (101) and the second long side cutting mechanism (102) both comprise a cutting base (11), a front and rear drive assembly (12), a cutting bracket (13), a cutting drive assembly (15), a first cutting die (16) and a second cutting die (17); the cutting base (11) is arranged on the frame, and the cutting bracket (13) is connected to the cutting base (11) by the front and rear drive assembly (12) in a forward and backward manner; a cutting plate (16) is arranged on the side of the cutting bracket (13) close to the battery cell shell. A cutting positioning socket (14) is provided in the cutting bracket (13), and an installation space (10) for installing a cutting drive assembly (15) is provided in the cutting bracket (13); the installation space (10) is vertically distributed and communicated with the cutting positioning socket (14); the cutting drive assembly (15) is arranged in the installation space (10); the first cutting die (16) and the second cutting die (17) are respectively connected to the cutting drive assembly (15) in a vertically movable manner, and the cutting positions of the first cutting die (16) and the second cutting die (17) correspond to the cutting positioning socket (14); the cutting drive assembly (15) is used for simultaneously driving the first cutting die (16) and the second cutting die (17) to move in relative or opposite directions, so as to realize cutting of the long plates on the upper and lower sides of one end of the battery cell shell; the short side cutting device (2) is used for cutting the short plates on the left and right sides of the two ends of the battery cell shell.

2. The double-head cutting equipment for battery cell shell according to claim 1, characterized in that: The cutting bracket (13) comprises a first vertical support plate (131), a second vertical support plate (132), a first front-rear connecting plate (133) and a second front-rear connecting plate (134); the first vertical support plate (131) and the second vertical support plate (132) are arranged in parallel, and the first vertical support plate (131) is located on the inner side of the second vertical support plate (132); the left side of the first vertical support plate (131) is fixedly connected to the left side of the second vertical support plate (132) through the first front-rear connecting plate (133); the first vertical support plate (131) The right side of the first vertical support plate (131) is fixedly connected to the right side of the second vertical support plate (132) through the second front and rear connecting plate (134), and the installation space (10) is surrounded by the first vertical support plate (131), the second vertical support plate (132) and the first front and rear connecting plate (133) and the second front and rear connecting plate (134); the cutting positioning socket (14) is transversely penetrated and arranged in the middle of the first vertical support plate (131); the cutting positioning socket (14) is flared from the inside to the outside, and the outer edge of the cutting positioning socket (14) is provided with a circular arc chamfer.

3. The double-head cutting equipment for battery cell shell according to claim 2, characterized in that: The cutting drive assembly (15) comprises a cutting drive motor (151), a cutting drive shaft (152), a first cutting shaft sleeve (153), a second cutting shaft sleeve (154), a first cutting template (155) and a second cutting template (156); the cutting drive motor (151) is vertically arranged on the cutting bracket (13); one end of the cutting drive shaft (152) is connected to the output shaft of the cutting drive motor (151); the other end of the cutting drive shaft (152) is rotatably connected to the cutting bracket (13); the first cutting shaft sleeve (153) and the second cutting shaft sleeve (154) are respectively sleeved on the cutting drive shaft (152); and the first cutting shaft sleeve (153) and the second cutting shaft sleeve (154) are respectively screwed to the cutting drive shaft (152). The first cutting template (155) is arranged on the first cutting sleeve (153), and a first cutting slide is arranged between the first cutting template (155) and the second vertical support plate (132); the first cutting template (16) is arranged on the first cutting template (155); the second cutting template (156) is arranged on the second cutting sleeve (154), and a second cutting slide is arranged between the second cutting template (156) and the second vertical support plate (132); the second cutting template (17) is arranged on the second cutting template (156); and the first cutting template (16) and the second cutting template (17) are translated up and down by rotating the cutting drive shaft (152).

4. The double-head cutting device for battery cell shell according to claim 3, characterized in that: The first knife die (16) and the second knife die (17) are symmetrically arranged in a vertical direction and have the same structure; a cutting slot (161) is arranged at the bottom of the first knife die (16) close to a side wall of the battery cell shell; a cutting knife block (162) protruding toward the battery cell shell is arranged at the bottom of the cutting slot (161); during cutting, the cutting knife block (162) is inserted into one end of the battery cell shell, and the knife surface of the cutting knife block (162) contacts the inner wall of the long plate of the battery cell shell.

5. The double-head cutting equipment for battery cell shell according to claim 4, characterized in that: Short side knife blocks (135) are arranged on the inner wall of the first vertical support plate (131) and on both sides of the cutting positioning socket (14); a U-shaped positioning knife edge (136) is arranged on one side wall of the short side knife block (135) close to the cutting positioning socket (14); when the cutting knife block (162) on the first knife die (16) and the cutting knife block (162) on the second knife die (17) are fitted together, the top surface of the cutting knife block (162) on the first knife die (16) is lower than the upper end of the positioning knife edge (136); and the bottom surface of the cutting knife block (162) on the second knife die (17) is lower than the lower end of the positioning knife edge (136).

6. The double-head cutting equipment for battery cell shell according to claim 1, characterized in that: A dust blowing mechanism (5) for removing dust from the surface of the battery cell shell is provided on one lateral side of the first long side cutting mechanism (101) and the second long side cutting mechanism (102) on the frame; and a material collecting mechanism (6) for collecting waste materials after cutting is provided on the other lateral side of the first long side cutting mechanism (101) and the second long side cutting mechanism (102) on the frame.

7. The double-head cutting equipment for battery cell shell according to claim 1, characterized in that: The short side cutting device (2) comprises a first short side cutting mechanism (201) and a second short side cutting mechanism (202); the first short side cutting mechanism (201) and the second short side cutting mechanism (202) are relatively distributed and symmetrically arranged on the front and rear sides of the frame; the first short side cutting mechanism (201) is used to cut the short plates on the left and right sides of one end of the battery cell shell; the second short side cutting mechanism (202) is used to cut the short plates on the left and right sides of the other end of the battery cell shell.

8. The double-head cutting device for battery cell shell according to claim 1, characterized in that: The invention also comprises a conveying device (3) for conveying the battery cell shell, wherein the conveying device (3) comprises a conveying support (31), a conveyor belt driving motor (32), a driving gear (33), a driven gear (34), a transmission chain (35) and a plurality of conveying carriers; a conveying gap (4) is arranged on the frame between the first long edge cutting mechanism (101) and the second long edge cutting mechanism (102); the outer edge of the conveying support (31) is in the shape of a runway, and the conveying support (31) is arranged on the frame and is located in the conveying gap (4). The conveyor belt drive motor (32) is arranged on one side of the conveying bracket (31), and the drive shaft of the conveyor belt drive motor (32) passes through the conveying bracket (31) and is connected to the driving gear (33); the driven gear (34) is rotatably connected to the other side of the conveying bracket (31); the transmission chain (35) is tensionedly connected to the driving gear (33) and the driven gear (34); a plurality of conveying carriers are arranged on the transmission chain (35) at intervals, and the conveying carriers are cyclically conveyed along the outer edge of the conveying bracket (31).

9. The double-head cutting device for battery cell shell according to claim 8, characterized in that: The front and rear side surfaces of the conveying support (31) are both provided with a runway-type slide rail (36) along the conveying support (31); the conveying carrier comprises a conveying base (37) and a conveying carrier plate (38); the conveying base (37) is in a U-shape with an opening facing downward, and the conveying base (37) comprises a first side plate (371), a second side plate (372) and a connecting plate (373); the lower part of the first side plate (371) of the conveying base (37) is fixedly connected to the transmission chain (35), and the upper part of the first side plate (371) is provided with a first pulley (374) matching with the runway-type slide rail (36); the upper part of the second side plate (372) of the conveying base (37) is provided with a second pulley (375) matching with the runway-type slide rail (36); The connecting plate (373) is connected between the top of the first side plate (371) and the second side plate (372); the conveying carrier (38) is horizontally arranged on the connecting plate (373); and both the front and rear sides of the conveying carrier (38) are provided with limit blocks (381) that match the battery cell shell; a shell pressing assembly (7) for fixing the battery cell shell is also arranged at the long side cutting device (1) and the short side cutting device (2) on the frame; the shell pressing assembly (7) includes a plurality of spaced-apart pressing cylinders (71), each of which is arranged vertically, and the cylinder body of the pressing cylinder (71) is fixed on the frame, and the telescopic rod at the bottom of the pressing cylinder (71) is fixedly connected to a pressing plate (72) for pressing the battery cell shell.

10. The double-head cutting device for battery cell shell according to claim 8 or 9, characterized in that: At least one conveying positioning assembly (39) is also provided on one side surface of the conveying support (31); the conveying positioning assembly (39) comprises a positioning driving member (391), a positioning driving swing arm (392) and a positioning shaft (393); the positioning driving member (391) is provided on the outer wall of the conveying support (31), and the positioning shaft (393) is rotatably connected to the outer wall of the conveying support (31) through two positioning seats (394); one end of the positioning driving swing arm (392) is rotatably connected to the driving portion of the positioning driving member (391), and the other end of the positioning driving swing arm (392) is rotatably connected to the driving portion of the positioning driving member (391). The end of the positioning rod (395) is fixed on the positioning shaft (393); a plurality of positioning rods (395) are arranged at intervals on the positioning shaft (393); a positioning plate (376) is arranged on a side plate of the conveying base (37) close to the positioning rod (395); a positioning recess (377) is arranged on the positioning plate (376); a positioning roller (396) is arranged at the end of the positioning rod (395) and is positioned and matched with the positioning recess (377); when positioning, the positioning rod (395) is swung to make the positioning roller (396) snap into the positioning recess (377) to achieve positioning.

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