Metal wire fixed-length cutting equipment and production method of battery current collector

Abstract

The invention discloses metal wire fixed-length cutting equipment and a production method of a battery current collector, and relates to the field of metal wire processing equipment. According to the metal wire cutting device, the metal wires are conveyed through the friction conveying rollers which rotate intermittently, so that the continuity is better and the conveying efficiency is higher when the metal wires are conveyed, the cutting efficiency of the metal wires can be improved, and when the metal wires are cut by the blades, the friction conveying rollers stop rotating conveying and clamp and fix the metal wires, so that the cutting efficiency of the metal wires is improved. According to the metal wire cutting device, the metal wires are prevented from moving in the cutting process, the cutting accuracy and the cutting effect of the metal wires are improved, fixed-length cutting can be continuously conducted on the metal wires through driving cooperation of the reciprocating lifting assembly and the intermittent rotation driving assembly, and the cutting efficiency of the metal wires can be further improved; the friction conveying rollers rotate at the same angle every time, so that when the friction conveying rollers rotate every time, the rolling friction conveying lengths of the metal wires are the same, and fixed-length cutting of the metal wires can be achieved.

Description

Technical Field

[0001] The present invention belongs to the field of metal wire processing equipment, and in particular, relates to a metal wire fixed-length cutting equipment and a production method for a battery current collector. Background Art

[0002] Metal wire cutting machine is a device that places metal wire in the machine fixture and cuts the wire into a certain length through the cutting blade or jaws.

[0003] Chinese patent CN113996734B discloses a medical wire fixed-length cutting machine, in which the wire is clamped and fixed by the clamp and the cylinder, and then conveyed forward, and then the wire is cut by the cutting mechanism. However, the movement and conveying of the wire is driven by the extension and contraction of the cylinder. When the wire is conveyed, the cylinder needs to reciprocate, so that the conveying speed of the wire is affected by the extension and contraction speed of the cylinder, the control reaction speed, etc., making it difficult to convey the wire continuously and quickly, thereby reducing the cutting efficiency of the wire. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes a metal wire fixed-length cutting device and a battery current collector production method to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a metal wire fixed-length cutting device, comprising a wire straightener, one end of which is rotatably mounted with a wire pay-off disk, and the other end of which is sequentially mounted with a wire conveying mechanism and a cutting mechanism; The wire conveying mechanism comprises an intermittent rotary drive assembly, a spacing adjustment assembly and two groups of friction conveying rollers, the two groups of friction conveying rollers are detachably mounted on the intermittent conveying assembly, the intermittent rotary drive assembly can drive the two groups of friction conveying rollers to rotate synchronously and intermittently in opposite directions, and the friction conveying rollers rotate at the same angle each time, and the spacing adjustment assembly can adjust the spacing between the two groups of friction conveying rollers; The cutting mechanism comprises a reciprocating lifting component and a blade. The reciprocating lifting component can drive the blade to reciprocate and lift, and when the friction conveying roller stops rotating, the reciprocating lifting component drives the blade to descend to a cutting position.

[0006] Further, the spacing adjustment assembly includes a machine base, two end plates are fixedly installed on the top surface of the machine base, a screw is rotatably installed between the two end plates, an adjustment handle is fixedly installed on the outer end of the screw, both ends of the screw are provided with symmetrically distributed external threads, and both ends of the screw are rotatably installed with slides through the external threads, and the two groups of friction conveying rollers are respectively installed on the top ends of the two slides; An optical axis guide rail is also fixedly installed between the two end plates, and two ends of the optical axis guide rail are respectively slidably connected with two slide seats.

[0007] Furthermore, the intermittent rotation drive assembly includes a rotation drive unit and two groups of intermittent rotation units, the two groups of intermittent rotation units are respectively installed on the top surfaces of the two slides and are transmission connected to the corresponding friction conveying rollers. The rotation drive unit can simultaneously drive the two groups of intermittent rotation units to rotate in the opposite direction, so that the two groups of intermittent rotation units drive the corresponding friction conveying rollers to rotate intermittently.

[0008] Further, the intermittent rotating unit comprises a mounting rod, the mounting rod is fixedly mounted on the top surface of the slide seat, a turntable is rotatably mounted on the mounting rod, the friction conveying roller is fixedly mounted on the top of the turntable, and a plurality of guide rails distributed in a circumference are fixedly mounted on the outer ring of the bottom surface of the turntable; A support plate is fixedly mounted on the mounting rod, a rotating shaft is rotatably mounted on the top surface of one end of the support plate, a bogie is fixedly mounted on the top end of the rotating shaft, a pin shaft that can slide against a guide rail is fixedly mounted on one end of the bogie, and the rotating shaft is transmission-connected to a rotary drive unit.

[0009] Further, the rotation drive unit comprises a conveying motor and two mounting plates, the two mounting plates are rotatably connected to the two mounting rods respectively, and the two mounting plates are rotatably connected via a connecting plate; The connecting ends of the two mounting plates are both rotatably mounted with driving gears, and the two driving gears are meshingly connected to each other for transmission. The conveying motor is fixedly mounted on the bottom end of the connecting plate and is meshingly connected to one of the driving gears for transmission. A transmission gear is rotatably mounted on the mounting rod, and an intermediate gear meshingly connected to the driving gear and the transmission gear is rotatably mounted on the mounting plate. A driven gear meshingly connected to the transmission gear is fixedly mounted on the rotating shaft.

[0010] Furthermore, a plurality of positioning columns are fixedly installed on the top of the turntable, a positioning groove which is plugged into the positioning column is provided at the bottom end of the friction conveying roller, the top end of the mounting rod movably extends through and extends above the friction conveying roller, and a limiting nut which is slidably abutted against the top end of the friction conveying roller is installed at the top of the mounting rod.

[0011] Furthermore, an arc-shaped limit plate is fixedly installed on the end of the bogie opposite to the pin shaft, and a plurality of limit protrusions distributed in a circle are fixedly installed on the outer ring of the bottom surface of the turntable. The limit protrusions and the guide rails are alternately distributed in sequence, and the inner side surface of the limit protrusion is provided with an arc-shaped limit groove that matches the outer arc surface of the arc-shaped limit plate.

[0012] Furthermore, the reciprocating lifting assembly includes a cutting motor, which is fixedly mounted on the top surface of the machine base through a motor base, a cam is installed on the conveying end of the cutting motor, a connecting rod is rotatably mounted on one end of the cam, a lifting frame is rotatably mounted on one end of the connecting rod, the blade is fixedly mounted on the bottom end of the lifting frame, a limit frame is slidably mounted in the middle of the lifting frame, a fixed connecting frame is installed on one side of the limit frame, and one end of the fixed connecting frame is fixedly mounted on the side wall of the wire straightening machine.

[0013] Furthermore, a limiting seat located below the blade is also provided on the top surface of the machine base, and a material drop opening is provided on one side of the limiting seat.

[0014] The present invention also discloses a method for producing a battery current collector, the specific steps of which are as follows: First, the metal wire required for producing the battery current collector is wound on a pay-off drum, and a friction conveying roller of a corresponding diameter is installed on the intermittent rotary drive assembly according to the length of the battery current collector to be produced, and the spacing between the two groups of friction conveying rollers is adjusted by the spacing adjustment assembly so that the spacing between the two groups of friction conveying rollers is the same as the diameter of the metal wire, and then the metal wire on the pay-off drum is stretched and unwound, so that the metal wire passes through the wire straightening machine and the two groups of friction conveying rollers, so that one end of the metal wire is located below the blade; Then, the two sets of friction conveying rollers are driven to rotate synchronously and intermittently in the opposite direction through the intermittent rotating driving assembly. When the two sets of friction conveying rollers rotate in the opposite direction, the metal wire can be conveyed toward the blade through friction force. When the two sets of friction conveying rollers stop rotating, the two sets of friction conveying rollers can clamp and fix the metal wire, thereby realizing intermittent conveying and clamping of the metal wire. At the same time, the blade is driven to move up and down by the reciprocating lifting assembly. When the friction conveying roller stops rotating to clamp the metal wire, the reciprocating lifting assembly drives the blade downward to the cutting position to cut the metal wire. When the reciprocating lifting assembly drives the blade upward to leave the cutting position, the two sets of friction conveying rollers rotate to convey the metal wire. In this reciprocating process, the metal wire can be continuously cut to a fixed length to obtain a metal rod, and then the metal rod is cut into a needle shape to obtain a battery current collector.

[0015] The present invention has the following beneficial effects: 1. In the present invention, two groups of friction conveying rollers are driven to rotate synchronously and intermittently in opposite directions through an intermittent rotating driving component. When the two groups of friction conveying rollers rotate in opposite directions, the metal wire can be conveyed toward the blade through friction force. When the two groups of friction conveying rollers stop rotating, the two groups of friction conveying rollers can clamp and fix the metal wire, thereby realizing intermittent conveying and clamping and fixing of the metal wire. Compared with conveying through the cooperation of a cylinder and a chuck, conveying through intermittently rotating friction conveying rollers can provide better continuity and higher efficiency during metal wire conveying, thereby improving the cutting efficiency of the metal wire. When the blade cuts the metal wire, the friction conveying roller stops rotating and conveying, and clamps and fixes the metal wire, thereby preventing displacement of the metal wire during cutting, thereby improving the accuracy and cutting effect of the metal wire cutting.

[0016] 2. In the present invention, the friction conveying roller rotates at the same angle each time, so that the length of the metal wire rolled and frictionally conveyed is the same each time the friction conveying roller rotates, thereby realizing fixed-length cutting of the metal wire; at the same time, the friction conveying roller is installed in a detachable manner, and friction conveying rollers of different diameters can be installed and replaced, and then the spacing between the two groups of friction conveying rollers is adjusted by the spacing adjustment component, so that the spacing between the two groups of friction conveying rollers is the same as the diameter of the metal wire, so as to ensure that the friction conveying roller can convey the metal wire when it rotates. By using friction conveying rollers of different diameters, the friction conveying roller can drive the metal wire to move and convey different lengths when rotating at the same angle, so that the metal wire can be cut into different lengths, thereby improving the applicability of the equipment.

[0017] 3. In the present invention, the blade is driven to lift and reciprocate by the reciprocating lifting assembly. When the friction conveying roller stops rotating to clamp the metal wire, the reciprocating lifting assembly drives the blade downward to the cutting position to cut the metal wire. When the reciprocating lifting assembly drives the blade upward to leave the cutting position, two groups of friction conveying rollers rotate to convey the metal wire. In this way, the reciprocating lifting assembly and the intermittent rotating driving assembly cooperate to continuously cut the metal wire to a fixed length, thereby further improving the cutting efficiency of the metal wire.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0020] Figure 1 It is one of the three-dimensional structural schematic diagrams of the cutting device of the present invention; Figure 2 For the present invention Figure 1 A local enlarged structural schematic diagram; Figure 3 The second schematic diagram of the three-dimensional structure of the cutting device of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B; Figure 5 It is one of the three-dimensional structural schematic diagrams of the wire conveying mechanism of the present invention; Figure 6 The second is a three-dimensional structural schematic diagram of the wire conveying mechanism of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at C; Figure 8 It is a schematic diagram of the three-dimensional structure of the bottom surface of the turntable of the present invention.

[0021] In the figure: 1. Wire straightening machine; 2. Wire pay-off drum; 3. Wire conveying mechanism; 31. Machine base; 32. Friction conveying roller; 33. Screw rod; 34. Sliding seat; 35. External thread; 36. End plate; 37. Adjustment handle; 38. Optical axis guide rail; 39. Mounting rod; 310. Conveying motor; 311. Mounting plate; 312. Turntable; 313. Positioning column; 314. Positioning groove; 315. Limiting nut; 316. Connecting plate; 317. Driving gear; 318 , intermediate gear; 319, transmission gear; 320, rotating shaft; 321, driven gear; 322, guide rail; 323, bogie; 324, pin shaft; 325, arc-shaped limit plate; 326, limit convex block; 327, support plate; 328, arc-shaped limit groove; 4, cutting mechanism; 41, cutting motor; 42, cam; 43, connecting rod; 44, lifting frame; 45, limit frame; 46, fixed connecting frame; 47, blade; 48, limit seat; 49, blanking port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0023] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention. Embodiment 1

[0024] See also Figure 1 , Figure 2 As shown, the present invention is a fixed-length cutting device for metal wires, comprising a wire straightening machine 1, a wire pay-off drum 2 is rotatably installed at one end of the wire straightening machine 1, and a wire conveying mechanism 3 and a cutting mechanism 4 are sequentially installed at the other end of the wire straightening machine 1; the wire conveying mechanism 3 comprises an intermittent rotating drive component, a spacing adjustment component and two groups of friction conveying rollers 32, the two groups of friction conveying rollers 32 are detachably installed on the intermittent conveying component, the intermittent rotating drive component can drive the two groups of friction conveying rollers 32 to rotate synchronously and intermittently in opposite directions, and the friction conveying rollers 32 rotate at the same angle each time, and the spacing adjustment component can adjust the spacing between the two groups of friction conveying rollers 32; the cutting mechanism 4 comprises a reciprocating lifting component and a blade 47, the reciprocating lifting component can drive the blade 47 to lift and lower back and forth, and when the friction conveying roller 32 stops rotating, the reciprocating lifting component drives the blade 47 to descend to the cutting position; Specifically, when the cutting device is working, the metal wire is firstly wound on the pay-off drum 2, and the friction conveying roller 32 of the corresponding diameter is installed on the intermittent rotating drive assembly according to the length of the cut metal wire, and the spacing between the two groups of friction conveying rollers 32 is adjusted by the spacing adjustment assembly, so that the spacing between the two groups of friction conveying rollers 32 is the same as the diameter of the metal wire, and then the metal wire on the pay-off drum 2 is stretched and unwound, so that the metal wire passes through the wire straightening machine 1 and the two groups of friction conveying rollers 32, so that one end of the metal wire is located below the blade 47; then, the two groups of friction conveying rollers 32 are driven to rotate synchronously and intermittently in the opposite direction by the intermittent rotating drive assembly, and when the two groups of friction conveying rollers are When the rollers 32 rotate in the opposite direction, the metal wire can be conveyed toward the blade 47 by friction force, and when the two sets of friction conveying rollers 32 stop rotating, the two sets of friction conveying rollers 32 can clamp and fix the metal wire, thereby realizing intermittent conveying and clamping and fixing of the metal wire; at the same time, the blade 47 is driven to lift and reciprocate by the reciprocating lifting assembly, and when the friction conveying rollers 32 stop rotating to clamp and fix the metal wire, the reciprocating lifting assembly drives the blade 47 downward to the cutting position to cut the metal wire, and when the reciprocating lifting assembly drives the blade 47 upward to leave the cutting position, the two sets of friction conveying rollers 32 rotate to convey the metal wire; in this reciprocating manner, the metal wire can be continuously cut to a fixed length; In this embodiment, the metal wire is conveyed by the intermittently rotating friction conveying roller 32, so that the continuity of the metal wire conveying is better and the conveying efficiency is faster, thereby improving the cutting efficiency of the metal wire. When the blade 47 cuts the metal wire, the friction conveying roller 32 stops rotating and conveying, and clamps and fixes the metal wire to prevent displacement during the cutting process of the metal wire, thereby improving the accuracy and cutting effect of the metal wire cutting. Through the driving cooperation of the reciprocating lifting component and the intermittent rotating drive component, the metal wire can be continuously cut to a fixed length, which can further improve the cutting efficiency of the metal wire; the friction conveying roller 32 rotates at the same angle each time, so that the length of the metal wire rolling friction conveying is the same when the friction conveying roller 32 rotates each time, thereby realizing the fixed-length cutting of the metal wire; at the same time, the friction conveying roller 32 adopts a detachable installation, and can install and replace friction conveying rollers 32 of different diameters, so that when the friction conveying roller 32 rotates at the same angle, it can drive the metal wire to move and convey different lengths, thereby cutting the metal wire into different lengths, thereby improving the applicability of the equipment. Embodiment 2

[0025] See also Figure 3 , Figure 4 As shown, the difference between this embodiment and the above embodiment is that the spacing adjustment component includes a machine base 31, two end plates 36 are fixedly installed on the top surface of the machine base 31, a screw rod 33 is rotatably installed between the two end plates 36, an adjustment handle 37 is fixedly installed on the outer end of the screw rod 33, both ends of the screw rod 33 are provided with symmetrically distributed external threads 35, and both ends of the screw rod 33 are rotatably installed with slide seats 34 through the external threads 35, and two groups of friction conveying rollers 32 are respectively installed on the top ends of the two slide seats 34; an optical axis guide rail 38 is also fixedly installed between the two end plates 36, and both ends of the optical axis guide rail 38 are respectively connected with the two slide seats 34 through sliding; When the spacing between the two groups of friction conveying rollers 32 needs to be adjusted, the screw rod 33 is driven to rotate by adjusting the handle 37. When the screw rod 33 rotates, the external threads 35 at both ends drive the two slides 34 to move toward each other or move in the opposite direction to open. At the same time, the two slides 34 drive the friction conveying rollers 32 thereon to move synchronously, so that the two groups of friction conveying rollers 32 move toward each other or move in the opposite direction to open until the spacing between the two groups of friction conveying rollers 32 is equal to the diameter of the metal wire. Embodiment 3

[0026] See also Figure 5-Figure 8As shown, the difference between this embodiment and the above embodiment is that the intermittent rotation drive assembly includes a rotation drive unit and two groups of intermittent rotation units, the two groups of intermittent rotation units are respectively installed on the top surfaces of two slide seats 34, and are drivingly connected with the corresponding friction conveying rollers 32, and the rotation drive unit can simultaneously drive the two groups of intermittent rotation units to rotate in the opposite direction, so that the two groups of intermittent rotation units drive the corresponding friction conveying rollers 32 to rotate intermittently; The intermittent rotating unit includes a mounting rod 39, which is fixedly mounted on the top surface of the slide 34, a turntable 312 is rotatably mounted on the mounting rod 39, a friction conveying roller 32 is fixedly mounted on the top of the turntable 312, and a plurality of guide rails 322 distributed in a circumference are fixedly mounted on the outer ring of the bottom surface of the turntable 312; a support plate 327 is fixedly mounted on the mounting rod 39, a rotating shaft 320 is rotatably mounted on the top surface of one end of the support plate 327, a bogie 323 is fixedly mounted on the top of the rotating shaft 320, a pin 324 capable of slidingly abutting against the guide rail 322 is fixedly mounted on one end of the bogie 323, and the rotating shaft 320 is drivingly connected to the rotating drive unit; Among them, the guide rail 322 is provided with four groups. When the rotation drive unit drives the rotating shaft 320 to rotate, the rotating shaft 320 drives the bogie 323 and the pin shaft 324 to rotate synchronously, so that the pin shaft 324 rotates in a circular motion. When the pin shaft 324 rotates and moves to the inside of the guide rail 322, the pin shaft 324 first slides along the inside of the guide rail 322, and then the pin shaft 324 abuts against the inside of the guide rail 322, and the guide rail 322 is synchronously abutted and rotated to drive the turntable 312 and the friction conveying roller 32 to rotate until the guide rail 322 , the turntable 312 and the friction conveying roller 32 rotate and move 90°, the pin shaft 324 separates from the inner wall of the guide rail 322, and no longer rotates against the guide rail 322. At this time, the turntable 312 and the friction conveying roller 32 remain stationary; then the pin shaft 324 moves inward along the guide rail 322 in the opposite direction, gradually separates from the guide rail 322, and moves to the next adjacent guide rail 322 position, and reciprocates in this way, which can continuously drive the friction conveying roller 32 to rotate intermittently, so that the friction conveying roller 32 drives the metal wire to be intermittently conveyed.

[0027] Furthermore, a plurality of positioning posts 313 are fixedly mounted on the top of the rotating disk 312, a positioning slot 314 is provided at the bottom of the friction conveying roller 32 to be plugged into the positioning posts 313, the top of the mounting rod 39 is movably extended to the top of the friction conveying roller 32, and a limiting nut 315 is installed at the top of the mounting rod 39 to slide against the top of the friction conveying roller 32; When the friction conveying roller 32 is installed, the friction conveying roller 32 is movably inserted into the installation rod 39, and the positioning groove 314 is aligned and inserted with the positioning column 313 to realize the locking connection between the turntable 312 and the friction conveying roller 32, and then the limit nut 315 is rotatably installed on the top end of the installation rod 39 to limit the top end of the friction conveying roller 32. The cooperation of the positioning groove 314, the positioning column 313, the installation rod 39 and the limit nut 315 makes the installation and disassembly of the friction conveying roller 32 more convenient, thereby facilitating the replacement of friction conveying rollers 32 of different diameters. When the turntable 312 rotates, the friction conveying roller 32 can be driven to rotate synchronously through the cooperation and locking of the positioning groove 314 and the positioning column 313, so that the friction conveying roller 32 can convey the metal wire.

[0028] Furthermore, an arc-shaped limiting plate 325 is fixedly installed on the end of the bogie 323 opposite to the pin shaft 324, and a plurality of limiting protrusions 326 distributed in a circumference are fixedly installed on the outer ring of the bottom surface of the turntable 312. The limiting protrusions 326 and the guide rails 322 are alternately distributed in sequence, and the inner side surface of the limiting protrusion 326 is provided with an arc-shaped limiting groove 328 that matches the outer arc surface of the arc-shaped limiting plate 325. When the pin shaft 324 rotates and moves to the outside of the guide rail 322, and the turntable 312 and the friction conveying roller 32 remain stationary, the arc surface on the outer side of the arc-shaped limiting plate 325 slides against the arc-shaped limiting groove 328 on the inner side of the limiting protrusion 326, so that the turntable 312 is limited by the cooperation of the arc-shaped limiting plate 325 and the limiting protrusion 326, so that the turntable 312 and the friction conveying roller 32 remain stationary, thereby improving the stability of the friction conveying roller 32 in clamping the metal wire when it is stationary. Embodiment 4

[0029] See also Figure 5-Figure 8 As shown, the difference between this embodiment and the above embodiment is that the rotation drive unit includes a conveying motor 310 and two mounting plates 311, the two mounting plates 311 are rotatably connected to the two mounting rods 39 respectively, and the two mounting plates 311 are rotatably connected through a connecting plate 316; the connecting ends of the two mounting plates 311 are rotatably mounted with driving gears 317, and the two driving gears 317 are meshed and transmission connected with each other, the conveying motor 310 is fixedly mounted on the bottom end of the connecting plate 316, and is meshed and transmission connected with one of the driving gears 317, a transmission gear 319 is rotatably mounted on the mounting rod 39, an intermediate gear 318 meshed and transmission connected between the driving gear 317 and the transmission gear 319 is rotatably mounted on the mounting plate 311, and a driven gear 321 meshed and transmission connected with the transmission gear 319 is fixedly mounted on the rotating shaft 320; When the rotation driving unit is working, the driving gear 317 connected to it is driven to rotate through the conveying motor 310, and at the same time, the driving gear 317 is meshed to drive another driving gear 317 to rotate in the same direction. When the driving gear 317 rotates, the corresponding driven gear 321 can be driven to rotate through the transmission meshing of the intermediate gear 318 and the transmission gear 319, so that the two driven gears 321 on both sides rotate in the opposite direction, thereby driving the rotating shaft 320 and the friction conveying roller 32 on both sides to rotate in the opposite direction, so as to drive the metal wire to move through the friction conveying roller 32 rotating in the opposite direction; Through the meshing transmission of the two sets of driving gears 317, the middle gear 318, the transmission gear 319 and the driven gear 321, the conveying motor 310 can drive the friction conveying rollers 32 on both sides to rotate in the direction when working, so as to drive the metal wire to move, and when the spacing adjustment component moves to adjust the spacing between the friction conveying rollers 32 on both sides, the mounting rod 39 can drive the two sets of driving gears 317, the middle gear 318, the transmission gear 319 and the driven gear 321 to move and adjust synchronously through the two mounting plates 311. During the adjustment process, the two sets of driving gears 317, the middle gear 318, the transmission gear 319 and the driven gear 321 always maintain meshing transmission connection to ensure that the conveying motor 310 can drive the friction conveying rollers 32 on both sides to rotate in the opposite direction when working. Embodiment 5

[0030] See also Figure 1 , Figure 2 As shown, the difference between this embodiment and the above embodiment is that the reciprocating lifting assembly includes a cutting motor 41, which is fixedly mounted on the top surface of the machine base 31 through a motor seat, and a cam 42 is installed on the conveying end of the cutting motor 41, and a connecting rod 43 is rotatably mounted on one end of the cam 42, and a lifting frame 44 is rotatably mounted on one end of the connecting rod 43, and a blade 47 is fixedly mounted on the bottom end of the lifting frame 44, and a limit frame 45 is slidably mounted in the middle of the lifting frame 44, and a fixed connecting frame 46 is installed on one side of the limit frame 45, and one end of the fixed connecting frame 46 is fixedly mounted on the side wall of the wire straightening machine 1; a limit seat 48 located below the blade 47 is also provided on the top surface of the machine base 31, and a blanking port 49 is provided on one side of the limit seat 48; Among them, a cross-shaped limiting groove is provided on the limiting seat 48, which is used to limit the staggered blades 47 and metal wires. When the cutting motor 41 is working, it can drive the cam 42 to rotate continuously. When the cam 42 rotates, the lifting frame 44 is driven to lift and reciprocate along the limiting frame 45 through the connecting rod 43, so that the lifting frame 44 drives the blade 47 to lift and reciprocate. When the metal wire stops being conveyed, the blade 47 moves downward to the cutting position to cut the metal wire. Then the lifting frame 44 drives the blade 47 to move upward to above the metal wire. At the same time, the friction conveying roller 32 rotates again to convey the metal wire to continue cutting the metal wire. Embodiment 6

[0031] This embodiment discloses a method for producing a battery current collector, which is used for the production and processing of a needle-shaped battery current collector. The specific steps are as follows: First, the metal wire required for producing the battery current collector is wound on the pay-off drum 2, and the friction conveying roller 32 of the corresponding diameter is installed on the intermittent rotary drive assembly according to the length of the battery current collector to be produced, and the spacing between the two groups of friction conveying rollers 32 is adjusted by the spacing adjustment assembly, so that the spacing between the two groups of friction conveying rollers 32 is the same as the diameter of the metal wire, and then the metal wire on the pay-off drum 2 is stretched and unwound, so that the metal wire passes through the wire straightening machine 1 and the two groups of friction conveying rollers 32, so that one end of the metal wire is located below the blade 47; Then, the two sets of friction conveying rollers 32 are driven to rotate synchronously and intermittently in the opposite direction through the intermittent rotation drive assembly. When the two sets of friction conveying rollers 32 rotate in the opposite direction, the metal wire can be conveyed toward the blade 47 by friction force. When the two sets of friction conveying rollers 32 stop rotating, the two sets of friction conveying rollers 32 can clamp and fix the metal wire, thereby realizing intermittent conveying and clamping of the metal wire. At the same time, the blade 47 is driven to move up and down by the reciprocating lifting assembly. When the friction conveying roller 32 stops rotating to clamp the metal wire, the reciprocating lifting assembly drives the blade 47 downward to the cutting position to cut the metal wire. When the reciprocating lifting assembly drives the blade 47 upward to leave the cutting position, the two sets of friction conveying rollers 32 rotate to convey the metal wire. In this reciprocating process, the metal wire can be continuously cut to a fixed length to obtain a metal rod, and then the metal rod is cut into a needle shape to obtain a battery current collector.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can understand and use the invention well.

Claims

1. A metal wire cutting-to-length device, comprising a wire straightening machine, characterized in that: A wire pay-off drum is rotatably mounted on one end of the wire straightening machine, and a wire conveying mechanism and a cutting mechanism are sequentially mounted on the other end of the wire straightening machine; The wire conveying mechanism comprises an intermittent rotary drive assembly, a spacing adjustment assembly and two groups of friction conveying rollers, the two groups of friction conveying rollers are detachably mounted on the intermittent conveying assembly, the intermittent rotary drive assembly can drive the two groups of friction conveying rollers to rotate synchronously and intermittently in opposite directions, and the friction conveying rollers rotate at the same angle each time, and the spacing adjustment assembly can adjust the spacing between the two groups of friction conveying rollers; The cutting mechanism comprises a reciprocating lifting component and a blade. The reciprocating lifting component can drive the blade to reciprocate and lift, and when the friction conveying roller stops rotating, the reciprocating lifting component drives the blade to descend to a cutting position.

2. The metal wire cutting-to-length device according to claim 1, characterized in that: The spacing adjustment assembly includes a machine base, two end plates are fixedly installed on the top surface of the machine base, a screw rod is rotatably installed between the two end plates, an adjustment handle is fixedly installed on the outer end of the screw rod, both ends of the screw rod are provided with symmetrically distributed external threads, and both ends of the screw rod are rotatably installed with slide seats through the external threads, and the two groups of friction conveying rollers are respectively installed on the top ends of the two slide seats; An optical axis guide rail is also fixedly installed between the two end plates, and two ends of the optical axis guide rail are respectively slidably connected with two slide seats.

3. The metal wire cutting-to-length device according to claim 2, characterized in that: The intermittent rotary drive assembly comprises a rotary drive unit and two groups of intermittent rotary units, the two groups of intermittent rotary units are respectively mounted on the top surfaces of the two slides and are transmission-connected to the corresponding friction conveying rollers, the rotary drive unit can simultaneously drive the two groups of intermittent rotary units to rotate in opposite directions, so that the two groups of intermittent rotary units drive the corresponding friction conveying rollers to rotate intermittently.

4. The metal wire cutting-to-length device according to claim 3, characterized in that: The intermittent rotating unit comprises a mounting rod, the mounting rod is fixedly mounted on the top surface of the slide seat, a turntable is rotatably mounted on the mounting rod, the friction conveying roller is fixedly mounted on the top of the turntable, and a plurality of guide rails distributed in a circumference are fixedly mounted on the outer ring of the bottom surface of the turntable; A support plate is fixedly mounted on the mounting rod, a rotating shaft is rotatably mounted on the top surface of one end of the support plate, a bogie is fixedly mounted on the top end of the rotating shaft, a pin shaft that can slide against a guide rail is fixedly mounted on one end of the bogie, and the rotating shaft is transmission-connected to a rotary drive unit.

5. The metal wire cutting-to-length device according to claim 4, characterized in that: The rotary drive unit comprises a conveying motor and two mounting plates, wherein the two mounting plates are rotatably connected to two mounting rods respectively, and the two mounting plates are rotatably connected via a connecting plate; The connecting ends of the two mounting plates are both rotatably mounted with driving gears, and the two driving gears are meshingly connected to each other for transmission. The conveying motor is fixedly mounted on the bottom end of the connecting plate and is meshingly connected to one of the driving gears for transmission. A transmission gear is rotatably mounted on the mounting rod, and an intermediate gear meshingly connected to the driving gear and the transmission gear is rotatably mounted on the mounting plate. A driven gear meshingly connected to the transmission gear is fixedly mounted on the rotating shaft.

6. The metal wire cutting-to-length device according to claim 4, characterized in that: A plurality of positioning posts are fixedly mounted on the top of the turntable, a positioning groove for plugging into the positioning posts is provided at the bottom of the friction conveying roller, the top of the mounting rod movably extends through and extends above the friction conveying roller, and a limiting nut for slidingly abutting against the top of the friction conveying roller is installed at the top of the mounting rod.

7. The metal wire cutting-to-length device according to claim 4, characterized in that: An arc-shaped limit plate is fixedly installed on the end of the bogie opposite to the pin shaft, and a plurality of limit protrusions distributed in a circle are fixedly installed on the outer ring of the bottom surface of the turntable. The limit protrusions and the guide rails are alternately distributed in sequence, and the inner side surface of the limit protrusion is provided with an arc-shaped limit groove that matches the outer arc surface of the arc-shaped limit plate.

8. The metal wire cutting-to-length device according to claim 2, characterized in that: The reciprocating lifting assembly includes a cutting motor, which is fixedly mounted on the top surface of the machine base through a motor base, a cam is installed on the conveying end of the cutting motor, a connecting rod is rotatably mounted on one end of the cam, a lifting frame is rotatably mounted on one end of the connecting rod, the blade is fixedly mounted on the bottom end of the lifting frame, a limiting frame is slidably mounted on the middle part of the lifting frame, a fixed connecting frame is installed on one side of the limiting frame, and one end of the fixed connecting frame is fixedly mounted on the side wall of the wire straightening machine.

9. The metal wire cutting-to-length device according to claim 8, characterized in that: The top surface of the machine base is also provided with a limiting seat located below the blade, and one side of the limiting seat is provided with a material drop opening.

10. A method for producing a battery current collector, using the metal wire cutting-to-length device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: First, the metal wire required for producing the battery current collector is wound on a pay-off drum, and a friction conveying roller of a corresponding diameter is installed on the intermittent rotary drive assembly according to the length of the battery current collector to be produced, and the spacing between the two groups of friction conveying rollers is adjusted by the spacing adjustment assembly so that the spacing between the two groups of friction conveying rollers is the same as the diameter of the metal wire, and then the metal wire on the pay-off drum is stretched and unwound, so that the metal wire passes through the wire straightening machine and the two groups of friction conveying rollers, so that one end of the metal wire is located below the blade; Then, the two sets of friction conveying rollers are driven to rotate synchronously and intermittently in the opposite direction through the intermittent rotating driving assembly. When the two sets of friction conveying rollers rotate in the opposite direction, the metal wire can be conveyed toward the blade through friction force. When the two sets of friction conveying rollers stop rotating, the two sets of friction conveying rollers can clamp and fix the metal wire, thereby realizing intermittent conveying and clamping of the metal wire. At the same time, the blade is driven to move up and down by the reciprocating lifting assembly. When the friction conveying roller stops rotating to clamp the metal wire, the reciprocating lifting assembly drives the blade downward to the cutting position to cut the metal wire. When the reciprocating lifting assembly drives the blade upward to leave the cutting position, the two sets of friction conveying rollers rotate to convey the metal wire. In this reciprocating process, the metal wire can be continuously cut to a fixed length to obtain a metal rod, and then the metal rod is cut into a needle shape to obtain a battery current collector.

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