Ultrafast picosecond laser die-cutting flaking machine

Abstract

Disclosed in the present invention is an ultrafast picosecond laser die-cutting flaking machine, comprising a frame and an electrode sheet unwinding assembly, a flattening roller assembly, an unwinding deviation correction detection assembly, a belt connecting platform assembly, a tension detection assembly, a color code detection assembly, a tension swing roller assembly, a reinforcing rib assembly, a front reinforcing rib deviation detection assembly, a travel deviation correction assembly, a travel deviation correction detection assembly, a cache assembly, a traction assembly, a picosecond laser die-cutting and blanking mechanism, an electrode sheet vacuum conveying belt mechanism, a double-station electrode sheet regular receiving mechanism, and an NG receiving box that are arranged sequentially in an electrode sheet unwinding direction. The present invention adopts a picosecond laser cutting method, has good cutting effect, a fast cutting speed, and a high production efficiency, and has the functions of dust removal and waste collection. The present invention can be compatible with wide-width electrode sheet conveying, thereby achieving a high compatibility, and also has a belt dust removal function, an electrode sheet dust removal function, and a material ramming function in an electrode sheet conveying section. In addition, two sets of electrode sheets are collected by means of a double-station OK material box, so that the material collection efficiency is high.

Description

Ultrafast picosecond laser die-cutting machine Technical Field

[0001] The present invention relates to the field of battery cell production, and in particular to an ultrafast picosecond laser die-cutting machine. Background Art

[0002] Lithium batteries are widely used in industries such as laptops, power tools, and new energy vehicles. With the development of these industries, the demand for lithium batteries continues to increase, but this also makes the requirements for lithium batteries increasingly higher. At present, the production of lithium battery cells is automated by cell film winding equipment. It mainly uses the coordination of winding heads, electrode feeding devices, diaphragm feeding devices, diaphragm cutting devices, and gluing devices to stack the positive electrode sheets, negative electrode sheets, and diaphragms in a certain order, and then perform winding and gluing processes. Among them, the cutting of electrode sheets is one of the important processes in the winding process of lithium battery cells. The existing electrode cutting equipment drives the cutter to cut the electrode through a driving mechanism, and uses a guide shaft and a guide sleeve to guide the movement of the cutter. However, due to the fitting gap between the guide shaft and the guide sleeve, the cutter is prone to shaking during the driven movement, resulting in difficulty in forming an effective shear section between the cutter and the fixed cutter when cutting the electrode, causing the cutting position of the electrode on the electrode cutting mechanism to be uncertain, the electrode cut has many burrs after cutting, and dust is generated during the cutting process, which seriously affects the quality of the lithium battery cell. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an ultrafast picosecond laser die-cutting machine.

[0004] The technical solutions of the present invention are as follows:

[0005] An ultrafast picosecond laser die-cutting machine comprises a frame and a pole piece unwinding assembly, a flattening roller assembly, an unwinding deviation correction detection assembly, a tape splicing platform assembly, a tension detection assembly, a color mark detection assembly, a tension swing roller assembly, a reinforcing rib assembly, a front reinforcing rib deviation detection assembly, a traveling deviation correction assembly, a traveling deviation correction detection assembly, a buffer assembly, a traction assembly, a picosecond laser die-cutting punching and cutting mechanism, a pole piece vacuum conveying belt mechanism, a double-station pole piece regularizing and receiving mechanism and an NG receiving box. The pole piece is automatically flattened and unwound by the pole piece unwinding assembly and the flattening roller assembly, and the unwinding deviation correction detection assembly feeds back to the pole piece unwinding assembly for automatic centering and deviation correction of the pole piece. After passing through the tape splicing platform assembly, the tension detection assembly is used. The components, color mark detection components and tension swing roller components perform real-time color mark recognition, tension detection and tension adjustment on the pole pieces on the belt. The reinforcement rib component strengthens the pole ear area. The front reinforcement rib deviation detection component detects the pole piece deviation and feeds back to the reinforcement rib component. The travel correction component cooperates with the travel correction detection component to perform centering correction on the pole piece. The cache component caches two long pole pieces. The traction component provides traction and tension isolation when the pole piece is on the belt. The pole piece is formed in one step by cooperating with the picosecond laser die-cutting and punching mechanism, and the pole piece, V-angle and pole piece are cut. The formed pole piece is transported to the receiving position by the pole piece vacuum conveying belt mechanism. The OK piece arriving at the receiving position is punched to the double-station pole piece regular receiving mechanism, and the NG piece is continued to be transported to the NG receiving box.

[0006] Furthermore, the picosecond laser die-cutting and punching mechanism includes a cutting base plate assembly, a laser focal length lifting and adjusting assembly, and an optical path system;

[0007] The cutting base plate assembly includes a first bracket and a belt pressing lifting cylinder, a belt pressing roller, an air blowing knife, a first negative pressure dust removal pipe, a cutting base plate, a first waste pipe, a second waste pipe, an air knife pressure regulating valve and a belt pressing lifting cylinder pressure regulating valve. The belt pressing roller is movably arranged above the cutting base plate and driven by the belt pressing lifting cylinder to press down and smooth the electrode piece pulled over. The air blowing knife and the first negative pressure dust removal pipe are movably arranged above the cutting base plate through the belt pressing lifting cylinder, and blow air to the cutting base plate and collect dust. The first waste pipe is arranged below the cutting base plate, and absorbs the electrode piece in place through negative pressure, and collects cutting waste synchronously with the second waste pipe arranged on one side of the first bracket during laser cutting. The air knife pressure regulating valve and the belt pressing lifting cylinder pressure regulating valve are both arranged on one side of the first bracket, and the air knife pressure regulating valve is connected to the air blowing knife through an air pipe, and the belt pressing lifting cylinder pressure regulating valve is connected to the belt pressing lifting cylinder through an air pipe;

[0008] The laser focal length lifting and adjusting assembly includes a second bracket and a liftable laser cutting group arranged on the second bracket, wherein the liftable laser cutting group is located above the cutting base plate structure;

[0009] The optical path system includes a picosecond laser, a beam expander and a reflector. The picosecond laser emits laser light, the beam expander is used to focus the light beam, and the reflector is used to change the direction of the light beam so that the light beam enters the liftable laser cutting group, and then the liftable laser cutting group is used to cut the pole piece on the cutting base plate to the pole ear, V angle, and cut.

[0010] Furthermore, the liftable laser cutting group includes a plurality of servo lifting modules arranged side by side, a galvanometer movably arranged on the servo lifting module, and a field mirror arranged at the bottom of the galvanometer, and a plurality of picosecond lasers are correspondingly provided.

[0011] Furthermore, the electrode vacuum conveying belt mechanism includes a first vacuum belt assembly, a second vacuum belt assembly, a third vacuum belt assembly and a fourth vacuum belt assembly which are arranged in sequence along the electrode transmission direction, the top of the first vacuum belt assembly is provided with a CCD size detection assembly, the bottom of the first vacuum belt assembly is provided with a first vacuum belt brush dust removal assembly, the top of the second vacuum belt assembly is provided with a second vacuum belt brush dust removal assembly, the bottom of the second vacuum belt assembly is provided with an A-side dust removal assembly and an A-side CCD defect detection assembly, the bottom of the third vacuum belt assembly is provided with a third vacuum belt brush dust removal assembly, the top of the third vacuum belt assembly is provided with a B-side dust removal assembly and a B-side CCD defect detection assembly, the top of the fourth vacuum belt assembly is provided with a The fourth vacuum belt brush dust removal component is provided, and the unloading position of the fourth vacuum belt component is provided with a feeding component. After the wide electrode is cut by the front station, it is transported in sequence through the first vacuum belt component, the second vacuum belt component, the third vacuum belt component, and the fourth vacuum belt component. During the transportation process, the A-side dust removal component and the B-side dust removal component are used to perform ion air knife blowing, negative pressure dust removal, and iron removal on the front and back sides of the electrode. After the electrode arrives at the receiving position, the feeding component is used to feed the electrode to the double-station electrode regular receiving mechanism. The first vacuum belt brush dust removal component, the second vacuum belt brush dust removal component, the third vacuum belt brush dust removal component, and the fourth vacuum belt brush dust removal component regularly clean the belts of the first vacuum belt component, the second vacuum belt component, the third vacuum belt component, and the fourth vacuum belt component.

[0012] Furthermore, the first vacuum belt assembly includes a first X-axis translation mechanism, a first vacuum chamber, a first negative pressure pipe, a first vacuum belt, and a first belt drive motor. The first vacuum chamber is arranged on the first X-axis translation mechanism, the first vacuum chamber is connected to the negative pressure through the first negative pressure pipe, the first vacuum belt drive is arranged on the first vacuum chamber, and the first belt drive motor is arranged on one side of the first vacuum belt to drive the first vacuum belt drive.

[0013] The second vacuum belt assembly includes a second vacuum chamber, a second negative pressure pipe, a second vacuum belt, a second belt drive motor, a first belt tensioning mechanism and a first belt lifting cylinder. The second vacuum chamber is connected to the negative pressure through the second negative pressure pipe. The second vacuum belt is driven on the second vacuum chamber. The second belt drive motor is arranged on one side of the second vacuum belt to drive the second vacuum belt. The second vacuum belt is tensioned by the first belt tensioning mechanism. The first belt lifting cylinder is arranged on one side of the second vacuum belt to drive the second vacuum belt to rise.

[0014] The third vacuum belt assembly includes a second X-axis translation mechanism, a third vacuum chamber, a third negative pressure pipe, a third vacuum belt and a third belt drive motor. The third vacuum chamber is arranged on the second X-axis translation mechanism, the third vacuum chamber is connected to the negative pressure through the third negative pressure pipe, the third vacuum belt drive is arranged on the third vacuum chamber, and the third belt drive motor is arranged on one side of the third vacuum belt to drive the third vacuum belt drive;

[0015] The fourth vacuum belt assembly includes a fourth vacuum chamber, a fourth negative pressure pipe, a multi-section vacuum belt, a fourth belt drive motor, a second belt tensioning mechanism and a second belt lifting cylinder. The fourth vacuum chamber is connected to the negative pressure through the fourth negative pressure pipe. The multi-section vacuum belt transmission is arranged on the fourth vacuum chamber. The fourth belt drive motor is arranged on one side of the multi-section vacuum belt to drive the multi-section vacuum belt transmission. The multi-section vacuum belt is tensioned by the second belt tensioning mechanism. The second belt lifting cylinder is arranged on one side of the multi-section vacuum belt to drive the multi-section vacuum belt to rise.

[0016] Furthermore, the A-side dust removal assembly includes a first air knife, a first iron removal device and a second negative pressure dust removal pipeline, and the first air knife and the first iron removal device are connected to the negative pressure through the second negative pressure dust removal pipeline;

[0017] The B-side dust removal assembly includes a second air knife, a second iron removal device and a third negative pressure dust removal pipeline. The second air knife and the second iron removal device are connected to the negative pressure through the third negative pressure dust removal pipeline.

[0018] Furthermore, the punching assembly includes a cam lifting motor, an origin sensor and a kicking plate. The cam lifting motor is transmission-connected to the kicking plate, and the origin sensor is arranged on the output end of the cam lifting motor.

[0019] Furthermore, the double-station pole piece regularizing and receiving mechanism includes a base, a Y-axis moving module, a third bracket, an X-axis moving module, a material box positioning assembly, a double-station OK material box, a lifting assembly and a pole piece regularizing assembly, the Y-axis moving module is arranged on the top of the base, the third bracket is movably arranged on the Y-axis moving module, the X-axis moving module is arranged on the third bracket, the material box positioning assembly is movably arranged on the X-axis moving module, and is driven by the X-axis moving module to move from the material receiving position to the material punching position, a material receiving chamber is provided on the material box positioning assembly, and one end of the material receiving chamber is provided with a loading and unloading port, the double-station OK material box can be pushed into the material receiving chamber or pulled out from the material receiving chamber from the loading and unloading port, and after being pushed into the material receiving chamber, the double-station OK material box is fixed by the material box positioning assembly, the A material box in place detection sensor is provided at the other end of the material receiving chamber, which is used to sense that the double-station OK material box is in place. The double-station OK material box is separated by a partition to form a first pole piece material receiving position and a second pole piece material receiving position. The first pole piece material receiving plate is placed at the bottom of the first pole piece material receiving position, and the second pole piece material receiving plate is placed at the bottom of the second pole piece material receiving position. The lifting assembly is provided with two and is arranged at the bottom of the material box positioning assembly, corresponding to the first pole piece material receiving plate and the second pole piece material receiving plate respectively. The pole piece regularization assembly is arranged at the top of the third bracket corresponding to the punching position, and the lifting assembly lifts the first pole piece material receiving plate or the second pole piece material receiving plate and regularizes the pole pieces thereon. A full material detection sensor is also provided on the top of the third bracket, which is used to sense that the first pole piece material receiving plate or the second pole piece material receiving plate is in place.

[0020] Furthermore, the jacking assembly includes a lifting guide rail, a left guide rod, an intermediate jacking block, a right guide rod, a connecting frame and a stepping screw motor. The left guide rod, the intermediate jacking block and the right guide rod are movably arranged on the lifting guide rail through the connecting frame and are driven up and down by the stepping screw motor. The tops of the left guide rod, the intermediate jacking block and the right guide rod are provided with positioning pins, the top of the intermediate jacking block is also provided with a magnet and a jacking position sensor, and the lower part of the lifting guide rail is provided with a limit sensor.

[0021] Furthermore, a dust removal assembly is also provided at the bottom of the material box positioning assembly.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention adopts the laser cutting method, which does not require the repair and replacement of tools, greatly reducing the production cost and the time and labor cost of tool debugging, replacement and maintenance. Specifically, picosecond laser is used to cut the pole ears, V angles, and pole pieces. The cutting method is stable, which can greatly reduce the dimensional error of the production, significantly improve the quality of the production process, and have better cutting effect. The size of burrs and molten beads will be much smaller than that of pulse laser. In addition, the picosecond laser cutting speed is faster and the benefits are higher than those of traditional pulse laser, thereby improving production efficiency.

[0024] (2) The present invention can prevent the electrode from being wrinkled at the cutting position and affecting the cutting effect by adsorbing the electrode by negative pressure and smoothing the electrode by the pressing roller during laser cutting, and has the functions of dust removal and waste collection;

[0025] (3) The present invention adopts a vacuum belt assembly to transport the electrode after laser cutting, which can prevent the electrode from deviating during transportation. A first vacuum belt assembly, a second vacuum belt assembly, a third vacuum belt assembly and a fourth vacuum belt assembly are sequentially arranged along the electrode conveying direction. The present invention is compatible with wide electrode conveying with a width of ≤800mm and a length of ≤700mm, has high compatibility, and also has belt dust removal function, electrode dust removal function and material punching function in the electrode conveying section;

[0026] (4) The present invention can collect two groups of electrodes through a double-station OK material box. The double-station OK material box is manually pushed into the material receiving chamber. The two electrode receiving positions of the double-station OK material box can automatically receive and fill the materials. After the materials are fully received, they are manually pulled out. When the electrodes enter the double-station OK material box, the electrode regularization components are used to neatly organize the OK electrodes, which greatly reduces labor costs and improves material receiving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] FIG1 is a schematic structural diagram of an ultrafast picosecond laser die-cutting machine provided by the present invention;

[0029] FIG2 is a schematic structural diagram of the picosecond laser die-cutting and punching mechanism of the present invention;

[0030] FIG3 is a schematic structural diagram of a cutting base plate assembly of the picosecond laser die-cutting and punching mechanism of the present invention;

[0031] FIG4 is a structural schematic diagram of the optical path system of the picosecond laser die-cutting and punching mechanism of the present invention;

[0032] FIG5 is a schematic structural diagram of the electrode vacuum conveying belt mechanism of the present invention;

[0033] FIG6 is a schematic structural diagram of a first vacuum belt assembly of a pole piece vacuum conveying belt mechanism according to the present invention;

[0034] FIG7 is a schematic structural diagram of a second vacuum belt assembly of the electrode vacuum conveying belt mechanism according to the present invention;

[0035] FIG8 is a schematic structural diagram of the third vacuum belt assembly of the electrode vacuum conveying belt mechanism of the present invention;

[0036] FIG9 is a schematic structural diagram of a fourth vacuum belt assembly of the electrode vacuum conveying belt mechanism of the present invention;

[0037] FIG10 is a schematic structural diagram of the dust removal assembly on the A side of the electrode vacuum conveying belt mechanism according to the present invention;

[0038] FIG11 is a schematic structural diagram of the dust removal assembly on the B side of the electrode vacuum conveying belt mechanism according to the present invention;

[0039] FIG12 is a schematic structural diagram of the punching assembly of the electrode vacuum conveying belt mechanism of the present invention;

[0040] FIG13 is a schematic structural diagram of the dual-station electrode regular material collection mechanism of the present invention;

[0041] FIG14 is a side view of the double-station electrode regular collection mechanism of the present invention;

[0042] FIG15 is a schematic structural diagram of a double-station OK material box of the double-station electrode regular material receiving mechanism of the present invention;

[0043] FIG16 is a schematic structural diagram of the lifting assembly of the dual-station electrode regularizing and collecting mechanism of the present invention. Modes for Carrying Out the Invention

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] In order to illustrate the technical solution of the present invention, specific embodiments are provided below.

[0046] Example

[0047] Please refer to Figure 1. This embodiment provides an ultrafast picosecond laser die-cutting machine, which can realize the functions of laser die-cutting, laser V-angle cutting, laser cutting, tape detection, dust removal, and material collection and unloading of positive and negative electrode sheets. It specifically includes a frame 10 and a electrode unwinding assembly 20, a flattening roller assembly 30, an unwinding correction detection assembly 40, a tape splicing platform assembly 50, a tension detection assembly 60, a color mark detection assembly 70, a tension swing roller assembly 80, a reinforcement rib assembly 9, a front reinforcement rib deviation detection assembly 100, a travel correction assembly 110, a travel correction detection assembly 120, a cache assembly 130, a traction assembly 140, a picosecond laser die-cutting and punching mechanism 150, a electrode vacuum conveying belt mechanism 160, a double-station electrode regularizing and receiving mechanism 170 and an NG receiving box 180.

[0048] As shown in FIG2 , the picosecond laser die-cutting and punching mechanism 150 includes a cutting base plate assembly 151, a laser focal length lifting and adjusting assembly 152, and an optical path system 153. As shown in FIG3 , the cutting base plate assembly 151 includes a first bracket 1511 and a belt pressing and lifting cylinder 1512, a belt pressing roller 1513, an air blowing knife 1514, a first negative pressure dust removal pipe 1515, a cutting base plate 1516, a first waste pipe 1517, a second waste pipe 1518, an air knife pressure regulating valve 1519, and a belt pressing and lifting cylinder pressure regulating valve 1520; the belt pressing roller 1513 is movably arranged above the cutting base plate 1516, and is driven by the belt pressing and lifting cylinder 1512 to press down and smooth the pulled electrode; the air blowing knife 1514 and the first negative pressure dust removal pipe 1515 are connected to the belt pressing and lifting cylinder 1512. The cylinder 1512 is movably arranged above the cutting base plate 1516, blowing air to the cutting base plate 1516 and collecting dust; the first waste pipe 1517 is arranged below the cutting base plate 1516, and absorbs the electrode into place through negative pressure, and collects cutting waste synchronously with the second waste pipe 1518 arranged on the side of the first bracket 1511 during laser cutting; the air knife pressure regulating valve 1519 and the pressure belt lifting cylinder pressure regulating valve 1520 are both arranged on one side of the first bracket 1511, and the air knife pressure regulating valve 1519 is connected to the air blowing air knife 1514 through an air pipe, and the pressure belt lifting cylinder pressure regulating valve 1520 is connected to the pressure belt lifting cylinder 1512 through an air pipe. The laser focal length lifting and adjusting assembly 152 includes a second bracket 1521 and a liftable laser cutting group arranged on the second bracket 1521. The liftable laser cutting group is located above the cutting base plate assembly 151. The liftable laser cutting group includes a plurality of servo lifting modules 1522 arranged side by side, a galvanometer 1523 movably arranged on the servo lifting module 1522, and a field lens 1524 arranged at the bottom of the galvanometer 1523. As shown in Figure 4, the optical path system 153 includes a plurality of picosecond lasers 1531, a beam expander 1532 and a reflector 1533. The picosecond laser 1531 emits laser light, the beam expander 1532 is used to focus the light beam, and the reflector 1533 is used to change the direction of the light beam so that the light beam enters the galvanometer 1523 of the liftable laser cutting group, and then the pole piece on the cutting base plate 1516 is cut into the pole ear, V angle, and cut through the field lens 1524.

[0049] The picosecond laser die-cutting and punching mechanism 150 can realize the laser cutting of pole ears, V-angles, and pole pieces, and also has the functions of belt pressing, dust removal, and waste collection. The specific working process is as follows: the belt pressing and lifting cylinder 1512 descends, and the belt pressing and smoothing roller 1513 presses down and smoothes the pulled electrode. After the electrode is in place, it stops. The cutting base plate assembly 151 provides negative pressure to adsorb the electrode through the first waste pipe 1517. The PLC sends a signal to the picosecond laser 1531. The picosecond laser 1531 emits laser light through the beam expander 1532 and the reflector 1533 to enter the galvanometer 1523. The laser is output through the field lens 1524 to cut the electrode ear, V angle, and trim the electrode. During the laser cutting process, the air knife 1514 and the first negative pressure dust removal pipe 1515 "blow and suck" the cutting position to collect dust. The first waste pipe 1517 and the second waste pipe 1518 simultaneously collect the cutting waste (V-angle waste, electrode ear waste). If the laser focal length needs to be changed and adjusted, the servo lifting module 1522 is controlled to lift and adjust the height of the field lens 1524 and the cutting electrode.

[0050] As shown in FIG5 , the electrode vacuum conveying belt mechanism 160 includes a first vacuum belt assembly 1601 , a second vacuum belt assembly 1602 , a third vacuum belt assembly 1603 and a fourth vacuum belt assembly 1604 arranged in sequence along the electrode transmission direction. The top of the first vacuum belt assembly 1601 is provided with a CCD size detection assembly 1614, and the bottom of the first vacuum belt assembly 1601 is provided with a first vacuum belt brush dust removal assembly 1605, which can regularly clean the belt of the first vacuum belt assembly 1601; the top of the second vacuum belt assembly 1602 is provided with a second vacuum belt brush dust removal assembly 1606, which can regularly clean the belt of the second vacuum belt assembly 1602; the bottom of the second vacuum belt assembly 1602 is provided with an A-side dust removal assembly 1607 and an A-side CCD defect detection assembly 1608, and the top of the third vacuum belt assembly 1603 is provided with a B-side dust removal assembly 1609 and a B-side CCD defect detection assembly 1610, which can clean the electrode during the electrode conveying process through the A-side dust removal assembly 1607 and the B-side dust removal assembly 1609. Ion air knife blowing, negative pressure dust removal and iron removal are carried out on the front and back sides; a third vacuum belt brush dust removal component 1611 is provided at the bottom of the third vacuum belt component 1603, and the belt of the third vacuum belt component 1603 can be cleaned regularly; a fourth vacuum belt brush dust removal component 1612 is provided at the top of the fourth vacuum belt component 1604, and the belt of the fourth vacuum belt component 1604 can be cleaned regularly; a punching component 1613 is provided at the unloading position of the fourth vacuum belt component 1604, and the wide-width electrode piece is cut by the front station and transported to the unloading position through the first vacuum belt component 1601, the second vacuum belt component 1602, the third vacuum belt component 1603 and the fourth vacuum belt component 1604 in sequence. After the electrode piece reaches the receiving position, the punching component 1613 punches the material to the double-station electrode piece regular receiving mechanism 170.

[0051] As shown in Figure 6 , the first vacuum belt assembly 1601 includes a first X-axis translation mechanism 16011, a first vacuum chamber 16012, a first negative pressure pipe 16013, a first vacuum belt 16014, and a first belt drive motor 16015. The first vacuum chamber 16012 is disposed on the first X-axis translation mechanism 16011 and can be driven to move along the X-axis by the first X-axis translation mechanism 16011. The first vacuum chamber 16012 is connected to a negative pressure source via the first negative pressure pipe 16013. The first vacuum belt 16014 is disposed on the first vacuum chamber 16012 for transmission. A first belt drive motor 16015 is disposed on one side of the first vacuum belt 16014 to drive the first vacuum belt 16014.

[0052] As shown in FIG7 , the second vacuum belt assembly 1602 includes a second vacuum chamber 16021, a second negative pressure pipe 16022, a second vacuum belt 16023, a second belt drive motor 16024, a first belt tensioning mechanism 16025, and a first belt lifting cylinder 16026. The second vacuum chamber 16021 is connected to a negative pressure source via the second negative pressure pipe 16022. The second vacuum belt 16023 is driven and disposed on the second vacuum chamber 16021. The second belt drive motor 16024 is disposed on one side of the second vacuum belt 16021 to drive the second vacuum belt 16021. The second vacuum belt 16021 is tensioned by the first belt tensioning mechanism 16025. The first belt lifting cylinder 16026 is disposed on one side of the second vacuum belt 16023 to drive the second vacuum belt 16023 upwards, facilitating replacement of the second vacuum belt 16023.

[0053] As shown in FIG8 , the third vacuum belt assembly 1603 includes a second X-axis translation mechanism 16031, a third vacuum chamber 16032, a third negative pressure pipe 16033, a third vacuum belt 16034, and a third belt drive motor 16035. The third vacuum chamber 16032 is mounted on the second X-axis translation mechanism 16031 and can be driven by the second X-axis translation mechanism 16031 to move along the X-axis. The third vacuum chamber 16032 is connected to a negative pressure source via the third negative pressure pipe 16033. The third vacuum belt 16034 is mounted on the third vacuum chamber 16032, and a third belt drive motor 16035 is mounted on one side of the third vacuum belt 16034 to drive the third vacuum belt 16034.

[0054] As shown in FIG9 , the fourth vacuum belt assembly 1604 includes a fourth vacuum chamber 16041, a fourth negative pressure pipe 16042, a multi-segment vacuum belt 16043, a fourth belt drive motor 16044, a second belt tensioning mechanism 16045, and a second belt lifting cylinder 16046. The fourth vacuum chamber 16041 is connected to a negative pressure chamber via the fourth negative pressure pipe 16042. The multi-segment vacuum belt 16043 is mounted on the fourth vacuum chamber 16041. The fourth belt drive motor 16044 is mounted on one side of the multi-segment vacuum belt 16043 to drive the multi-segment vacuum belt 16043. The multi-segment vacuum belt 16043 is tensioned by the second belt tensioning mechanism 16045. The second belt lifting cylinder 16046 is mounted on one side of the multi-segment vacuum belt 16043 to elevate the multi-segment vacuum belt 16043 to facilitate replacement.

[0055] As shown in Figure 10, the A-side dust removal assembly 1607 includes a first air knife 16071, a first iron removal device 16072 and a second negative pressure dust removal pipe 16073. The first air knife 16071 and the first iron removal device 16072 are connected to the negative pressure through the second negative pressure dust removal pipe 16073. The first air knife 16071 is used for blowing and negative pressure dust removal, and the first iron removal device 16072 is used for iron removal.

[0056] As shown in Figure 11, the B-side dust removal assembly 1609 includes a second air knife 16091, a second iron removal device 16092 and a third negative pressure dust removal pipe 16093. The second air knife 16091 and the second iron removal device 16092 are connected to the negative pressure through the third negative pressure dust removal pipe 16093.

[0057] As shown in Figure 12, the punching assembly 1613 includes a cam lift motor 16131, an origin sensor 16132, and a kicker plate 16133. The cam lift motor 16131 is in driving connection with the kicker plate 16133, which is driven up and down by the cam lift motor 16131. ​​The origin sensor 16132 is located at the output end of the cam lift motor 16131.

[0058] The electrode vacuum conveying belt mechanism 160 uses a vacuum belt assembly to convey the electrode, which can prevent the electrode from deviating during transportation, and is sequentially provided with a first vacuum belt assembly 1601, a second vacuum belt assembly 1602, a third vacuum belt assembly 1603 and a fourth vacuum belt assembly 1604 along the electrode conveying direction. It is compatible with wide electrode conveying with a width of ≤800mm and a length of ≤700mm, has high compatibility, and has belt dust removal function, electrode dust removal function and material beating function.

[0059] As shown in Figures 13 and 14, the dual-station electrode regularization and receiving mechanism 170 includes a base 1701, a Y-axis moving module 1702, a third bracket 1703, an X-axis moving module 1704, a material box positioning assembly 1705, a dual-station OK material box 1706, a lifting assembly 1707, and a electrode regularization assembly 1708. The Y-axis moving module 1702 is arranged on the top of the base 1701, the third bracket 1703 is movably arranged on the Y-axis moving module 1702, the X-axis moving module 1704 is arranged on the third bracket 1703, and the material box positioning assembly 1705 is movably arranged on the X-axis moving module 1704. It is driven by the X-axis moving module 1704 to move from the receiving position to the punching position. The material box positioning assembly 1705 is provided with a material receiving chamber, and one end of the material receiving chamber is provided with a loading and unloading port. The double-station OK material box 1706 can be pushed into the material receiving chamber or pulled out from the material receiving chamber through the loading and unloading port. After being pushed into the material receiving chamber, the double-station OK material box 1706 is fixed by the material box positioning assembly 1705. The other end of the material receiving chamber is provided with a material box in place detection sensor 1709 for sensing the position of the double-station OK material box 1706. As shown in Figure 15, the double-station OK material box 1706 is separated by a partition 17061 to form a first pole piece receiving position and a second pole piece receiving position. The bottom of the first pole piece receiving position is placed with a first pole piece receiving plate 17062, and the bottom of the second pole piece receiving position is placed with a second pole piece receiving plate 17063. There are two lifting components 1707, which are arranged at the bottom of the material box positioning component 1705, corresponding to the first electrode receiving plate 17062 and the second electrode receiving plate 17063 respectively. The electrode regularization component 1708 is arranged at the top of the third bracket 1703 corresponding to the material punching position. The lifting component 1707 lifts the first electrode receiving plate 17062 or the second electrode receiving plate 17063 and regularizes the electrode thereon. A full material detection sensor 1710 is also provided on the top of the third bracket 1703, which is used to sense that the first electrode receiving plate 17062 or the second electrode receiving plate 17063 is in place. As shown in Figure 16, the lifting assembly 1707 includes a lifting guide rail 17071, a left guide rod 17072, an intermediate lifting block 17073, a right guide rod 17074, a connecting frame 17075 and a stepping screw motor 17076. The left guide rod 17072, the intermediate lifting block 17073 and the right guide rod 17074 are movably arranged on the lifting guide rail 17071 through the connecting frame 17075, and are driven up and down by the stepping screw motor 17076. A positioning pin 17077 is provided on the top of the left guide rod 17072, the intermediate lifting block 17073 and the right guide rod 17074. A magnet 17078 and a lifting position sensor 17079 are also provided on the top of the intermediate lifting block 17073. A limit sensor 17080 is provided at the lower part of the lifting guide rail 170717. A dust removal assembly 1711 is also provided at the bottom of the material box positioning assembly 1705 .

[0060] After the double-station OK material box 1706 of the double-station electrode regularizing and receiving mechanism 170 is manually pushed into the material, the material box in place detection sensor 1709 senses that it is in place, and the cylinder of the material box positioning component 1705 extends to fix the double-station OK material box 1706; the X-axis moving module 1704 drives the double-station OK material box 1706 to move horizontally from the receiving position to the punching position; the lifting component 1707 lifts the first electrode receiving plate 17062, and the full material detection sensor 1710 stops after sensing that it is in place; the punching component 1613 of the front station punches the electrode onto the first electrode receiving plate 17062, and the electrode is regularized by the electrode regularizing component 1708, and the action is repeated to collect 5 pieces of material (the quantity can be set by program), and the lifting component 1707 drives the first electrode receiving plate 17062 to descend and then rise until it is full. The material detection sensor 1710 stops after sensing the position again and repeats the sheet receiving action; after the first pole piece receiving position is full of material, the lifting assembly 1707 descends to the receiving terminal (limit sensor 17080) and separates from the first pole piece receiving plate 17062, and the X-axis moving module 1704 drives the double-station OK material box 1706 to move horizontally, so that the second pole piece receiving position moves to the punching position, and the lifting assembly 1707 lifts the second pole piece receiving plate 17063 and rises to repeat the sheet receiving action; after the second pole piece receiving position is full of material, the lifting assembly 1707 descends to the receiving terminal (limit sensor 17080) and separates from the second pole piece receiving plate 17063, and the alarm prompts manual pushing out of the double-station OK material box 1706; during the material receiving process, the dust removal assembly 1711 collects dust from the double-station OK material box 1706.

[0061] If the model needs to be changed, the double-station OK material box 1706 is pushed in manually, and the material box in place detection sensor 1709 senses that it is in place. After the cylinder of the material box positioning assembly 1705 extends to fix the double-station OK material box 1706, the double-station OK material box 1706 is driven to move along the Y direction by the hand-cranked Y-axis moving module 1702 to be compatible with different types of electrode material collection.

[0062] The specific working process of the ultrafast picosecond laser die-cutting machine is as follows: the pole piece is automatically flattened and unwound by the pole piece unwinding assembly 20 and the flattening roller assembly 30, and the pole piece is automatically centered and corrected by the unwinding correction detection assembly 40; after passing through the tape connection platform assembly 50, the tension detection assembly 60, the color mark detection assembly 70 and the tension swing roller assembly 80 are used to perform real-time color mark recognition, tension detection and tension adjustment on the pole piece to ensure the accuracy of the pole piece tape. Smooth; the reinforcing rib assembly 90 strengthens the tab area to prevent the tab from folding; the front reinforcing rib deviation detection assembly 100 detects the deviation of the pole piece and feeds back to the reinforcing rib assembly 90, without pressing the tab; the traveling correction assembly 110 cooperates with the traveling correction detection assembly 120 to center the pole piece; the buffer assembly 130 buffers two long pole pieces; the traction assembly 140 provides traction and tension isolation for the pole piece when it is walking, and cooperates with the picosecond laser die-cutting and punching mechanism 150 to perform a Forming, cutting the pole ears, V angles, and cutting the pole pieces; the formed pole pieces are transported to the receiving position by the first vacuum belt assembly 1601, the second vacuum belt assembly 1602, the third vacuum belt assembly 1603, and the fourth vacuum belt assembly 1604; during the transportation, the first vacuum belt brush dust removal assembly 1605, the second vacuum belt brush dust removal assembly 1606, the third vacuum belt brush dust removal assembly 1611, and the fourth vacuum belt brush dust removal assembly 1612 brush each section of the vacuum belt Brush dust removal; CCD size detection component 1614, A-side CCD defect detection component 1608, B-side CCD defect detection component 1610 respectively perform size detection and double-side defect detection on the electrode; A-side dust removal component 1607 and B-side dust removal component 1609 perform ion air knife dust removal and iron removal on the electrode; after the electrode arrives at the receiving station, the OK electrode is punched by the punching component 1613 to the double-station electrode regular receiving mechanism 170, and the NG electrode is continued to be transported to the NG receiving box 180.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrafast picosecond laser die-cutting machine, characterized in that: It includes a frame and a pole piece unwinding assembly, a flattening roller assembly, an unwinding correction detection assembly, a tape splicing platform assembly, a tension detection assembly, a color mark detection assembly, a tension swing roller assembly, a reinforcing rib assembly, a front reinforcing rib deviation detection assembly, a traveling correction assembly, a traveling correction detection assembly, a cache assembly, a traction assembly, a picosecond laser die-cutting and punching mechanism, a pole piece vacuum conveying belt mechanism, a double-station pole piece regular receiving mechanism and an NG receiving box. The pole piece is automatically flattened and unwound by the pole piece unwinding assembly and the flattening roller assembly, and is fed back to the pole piece unwinding assembly through the unwinding correction detection assembly for automatic centering correction of the pole piece. After passing through the tape splicing platform assembly, the tension detection assembly and the color mark detection assembly are used to detect the pole piece. The components and tension swing roller components perform real-time color code recognition, tension detection and tension adjustment on the pole pieces on the belt. The rib assembly strengthens the pole ear area. The front rib deviation detection component detects the pole piece deviation and feeds back to the rib assembly. The travel correction component cooperates with the travel correction detection component to perform centering correction on the pole piece. The cache component caches two long pole pieces. The traction component provides traction and tension isolation for the pole piece when it is on the belt. The picosecond laser die-cutting and punching mechanism is used to form the pole piece in one step, cut the pole ear, V-angle, and cut the pole piece. The formed pole piece is transported to the receiving position by the pole piece vacuum conveying belt mechanism. The OK piece that arrives at the receiving position is punched to the double-station pole piece regular receiving mechanism, and the NG piece continues to be transported to the NG receiving box.

2. The ultrafast picosecond laser die-cutting machine according to claim 1, characterized in that: The picosecond laser die-cutting and punching mechanism comprises a cutting base plate component, a laser focal length lifting and lowering adjustment component and an optical path system; The cutting base plate assembly includes a first bracket and a belt pressing and lifting cylinder, a belt pressing roller, an air blowing air knife, a first negative pressure dust removal pipeline, a cutting base plate, a first waste pipeline, a second waste pipeline, an air knife pressure regulating valve and a belt pressing and lifting cylinder pressure regulating valve, wherein the belt pressing and lifting roller is movably arranged above the cutting base plate, and is driven by the belt pressing and lifting cylinder to press down and smooth the pole piece pulled over, the air blowing air knife and the first negative pressure dust removal pipeline are movably arranged above the cutting base plate through the belt pressing and lifting cylinder, and are blown to the cutting base plate and dust is collected, the first waste pipeline is arranged below the cutting base plate, and is sucked into place by negative pressure, and is synchronously collected with the second waste pipeline arranged on one side of the first bracket during laser cutting, the air knife pressure regulating valve and the belt pressing and lifting cylinder pressure regulating valve are both arranged on one side of the first bracket, the air knife pressure regulating valve is connected to the air blowing air knife through an air pipe, and the belt pressing and lifting cylinder pressure regulating valve is connected to the belt pressing and lifting cylinder through an air pipe; The laser focal length lifting and adjusting assembly comprises a second bracket and a liftable laser cutting group arranged on the second bracket, wherein the liftable laser cutting group is located above the cutting bottom plate structure; The optical path system includes a picosecond laser, a beam expander and a reflector. The picosecond laser emits laser, the beam expander is used to focus the light beam, and the reflector is used to change the direction of the light beam so that the light beam enters the liftable laser cutting group, and then the liftable laser cutting group is used to cut the pole piece on the cutting base plate to cut the pole ear, V angle, and cut.

3. The ultrafast picosecond laser die-cutting machine according to claim 2, characterized in that: The liftable laser cutting group comprises a plurality of servo lifting modules arranged side by side, a galvanometer movably arranged on the servo lifting module and a field mirror arranged at the bottom of the galvanometer, and a plurality of picosecond lasers are correspondingly arranged.

4. The ultrafast picosecond laser die-cutting machine according to claim 1, characterized in that: The electrode vacuum conveying belt mechanism comprises a first vacuum belt assembly, a second vacuum belt assembly, a third vacuum belt assembly and a fourth vacuum belt assembly which are sequentially arranged along the electrode transmission direction, a CCD size detection assembly is arranged on the top of the first vacuum belt assembly, a first vacuum belt brush dust removal assembly is arranged on the bottom of the first vacuum belt assembly, a second vacuum belt brush dust removal assembly is arranged on the top of the second vacuum belt assembly, an A-side dust removal assembly and an A-side CCD defect detection assembly are arranged on the bottom of the second vacuum belt assembly, a third vacuum belt brush dust removal assembly is arranged on the bottom of the third vacuum belt assembly, a B-side dust removal assembly and a B-side CCD defect detection assembly are arranged on the top of the third vacuum belt assembly, and a A fourth vacuum belt brush dust removal component is provided, and a material beating component is provided at the unloading position of the fourth vacuum belt component. After the wide electrode piece is cut by the front station, it is transported in sequence through the first vacuum belt component, the second vacuum belt component, the third vacuum belt component, and the fourth vacuum belt component. During the transportation process, the A-side dust removal component and the B-side dust removal component are used to perform ion air knife blowing, negative pressure dust removal, and iron removal on the front and back sides of the electrode piece. After the electrode piece arrives at the receiving position, the material beating component is used to beat the electrode piece to the double-station electrode piece regular receiving mechanism. The first vacuum belt brush dust removal component, the second vacuum belt brush dust removal component, the third vacuum belt brush dust removal component, and the fourth vacuum belt brush dust removal component regularly clean the belts of the first vacuum belt component, the second vacuum belt component, the third vacuum belt component, and the fourth vacuum belt component.

5. The ultrafast picosecond laser die-cutting machine according to claim 4, characterized in that: The first vacuum belt assembly includes a first X-axis translation mechanism, a first vacuum chamber, a first negative pressure pipeline, a first vacuum belt and a first belt drive motor, the first vacuum chamber is arranged on the first X-axis translation mechanism, the first vacuum chamber is connected to negative pressure through the first negative pressure pipeline, the first vacuum belt drive is arranged on the first vacuum chamber, and the first belt drive motor is arranged on one side of the first vacuum belt to drive the first vacuum belt drive; The second vacuum belt assembly includes a second vacuum chamber, a second negative pressure pipeline, a second vacuum belt, a second belt drive motor, a first belt tensioning mechanism and a first belt lifting cylinder. The second vacuum chamber is connected to negative pressure through the second negative pressure pipeline. The second vacuum belt transmission is arranged on the second vacuum chamber. The second belt drive motor is arranged on one side of the second vacuum belt to drive the second vacuum belt transmission. The second vacuum belt is tensioned by the first belt tensioning mechanism. The first belt lifting cylinder is arranged on one side of the second vacuum belt to drive the second vacuum belt to rise. The third vacuum belt assembly includes a second X-axis translation mechanism, a third vacuum chamber, a third negative pressure pipeline, a third vacuum belt and a third belt drive motor, wherein the third vacuum chamber is arranged on the second X-axis translation mechanism, the third vacuum chamber is connected to the negative pressure through the third negative pressure pipeline, the third vacuum belt drive is arranged on the third vacuum chamber, and the third belt drive motor is arranged on one side of the third vacuum belt to drive the third vacuum belt drive; The fourth vacuum belt assembly includes a fourth vacuum chamber, a fourth negative pressure pipeline, a multi-section vacuum belt, a fourth belt drive motor, a second belt tensioning mechanism and a second belt lifting cylinder. The fourth vacuum chamber is connected to the negative pressure through the fourth negative pressure pipeline. The multi-section vacuum belt transmission is arranged on the fourth vacuum chamber. The fourth belt drive motor is arranged on one side of the multi-section vacuum belt to drive the multi-section vacuum belt transmission. The multi-section vacuum belt is tensioned by the second belt tensioning mechanism. The second belt lifting cylinder is arranged on one side of the multi-section vacuum belt to drive the multi-section vacuum belt to rise.

6. The ultrafast picosecond laser die-cutting machine according to claim 4, characterized in that: The A-side dust removal assembly includes a first air knife, a first iron removal device, and a second negative pressure dust removal pipeline, wherein the first air knife and the first iron removal device are connected to a negative pressure through the second negative pressure dust removal pipeline; The B-side dust removal assembly includes a second air knife, a second iron removal device and a third negative pressure dust removal pipeline, and the second air knife and the second iron removal device are connected to negative pressure through the third negative pressure dust removal pipeline.

7. The ultrafast picosecond laser die-cutting machine according to claim 4, characterized in that: The punching assembly includes a cam lifting motor, an origin sensor and a kicking plate. The cam lifting motor is transmission-connected to the kicking plate, and the origin sensor is arranged on the output end of the cam lifting motor.

8. The ultrafast picosecond laser die-cutting machine according to claim 1, characterized in that: The double-station pole piece regularizing and receiving mechanism comprises a base, a Y-axis moving module, a third bracket, an X-axis moving module, a material box positioning assembly, a double-station OK material box, a lifting assembly and a pole piece regularizing assembly, the Y-axis moving module is arranged on the top of the base, the third bracket is movably arranged on the Y-axis moving module, the X-axis moving module is arranged on the third bracket, the material box positioning assembly is movably arranged on the X-axis moving module, and is driven by the X-axis moving module to move from the material receiving position to the material punching position, a material receiving chamber is arranged on the material box positioning assembly, and one end of the material receiving chamber is provided with an upper and lower material port, the double-station OK material box can be pushed into the material receiving chamber or pulled out from the material receiving chamber from the upper and lower material ports, and after being pushed into the material receiving chamber, the double-station OK material box is fixed by the material box positioning assembly, the material receiving A material box in place detection sensor is provided at the other end of the chamber, which is used to sense that the double-station OK material box is in place. The double-station OK material box is separated by a partition to form a first pole piece receiving position and a second pole piece receiving position. A first pole piece receiving plate is placed at the bottom of the first pole piece receiving position, and a second pole piece receiving plate is placed at the bottom of the second pole piece receiving position. The lifting assembly is provided with two and is arranged at the bottom of the material box positioning assembly, corresponding to the first pole piece receiving plate and the second pole piece receiving plate respectively. The pole piece regularization assembly is arranged at the top of the third bracket corresponding to the punching position, and the first pole piece receiving plate or the second pole piece receiving plate is lifted up by the lifting assembly and then the pole pieces thereon are regularized. A full material detection sensor is also provided on the top of the third bracket, which is used to sense that the first pole piece receiving plate or the second pole piece receiving plate is in place.

9. The ultrafast picosecond laser die-cutting machine according to claim 8, characterized in that: The lifting assembly includes a lifting guide rail, a left guide rod, an intermediate lifting block, a right guide rod, a connecting frame and a stepping screw motor. The left guide rod, the intermediate lifting block and the right guide rod are movably arranged on the lifting guide rail through the connecting frame and are driven to move up and down by the stepping screw motor. Positioning pins are arranged on the top of the left guide rod, the intermediate lifting block and the right guide rod. A magnet and a lifting position sensor are also arranged on the top of the intermediate lifting block. A limit position sensor is arranged at the lower part of the lifting guide rail.

10. The ultrafast picosecond laser die-cutting machine according to claim 8, characterized in that: A dust removal assembly is also provided at the bottom of the material box positioning assembly.

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