Lithium battery cell gasket fully automatic cleaning and testing production line

Abstract

The present invention discloses a fully automatic cleaning and testing production line for lithium battery cell gaskets, which presents a closed-loop structure formed by multiple cleaning stations. In particular, for the specific object of lithium battery gaskets, gasket position transfer equipment and cleaning procedures are specially designed, so that the overall structure is compact, energy-efficient, and has stable performance, which is easy to control and maintain, and does not introduce the risk of secondary damage and pollution. It is particularly suitable for industrial application scenarios.

Description

Technical Field

[0001] The present invention relates to the field of lithium batteries, and more particularly to a fully automatic cleaning line for lithium battery gaskets. Background Art

[0002] During the production of lithium batteries, gaskets are needed for auxiliary operations. Ceramic powder and other tiny particles of impurities will remain on the surface of the used gaskets. Gaskets need to be cleaned before reuse to avoid the risk of contamination in lithium battery production. The traditional cleaning method is manual cleaning, which is time-consuming, labor-intensive, inefficient, and difficult to guarantee the cleaning quality. Summary of the invention

[0003] In view of the above-mentioned problems existing in the prior art, the present invention discloses a fully automatic cleaning line for lithium battery gaskets, which presents a closed-loop structure formed by multi-stage cleaning stations. In particular, for the specific object of lithium battery gaskets, the gasket position transfer equipment and the cleaning process are specially designed, so that the overall structure is compact, energy-efficient, and has stable performance, which is easy to control and maintain, and does not introduce the risk of secondary damage and pollution. It is particularly suitable for industrial application scenarios.

[0004] Specifically, the lithium battery gasket automatic cleaning line of the present invention includes a material frame, a loading station, a solvent cleaning station, a spraying station, a rinsing station, a drying station and a unloading station;

[0005] The loading station is configured to load lithium battery gaskets into the material frame;

[0006] The solvent cleaning station is configured to clean the lithium battery gasket using a solvent;

[0007] The spraying station is configured to spray the lithium battery gasket with pure water;

[0008] The rinsing station is configured to rinse the lithium battery gasket using ultrasonic waves;

[0009] The drying station is configured to dry the lithium battery gasket using hot air;

[0010] The unloading station is configured to allow the cleaned lithium battery gasket to be removed.

[0011] Furthermore, the fully automatic cleaning line for lithium battery gaskets of the present invention further comprises a conveying loop forming a rectangular closed loop;

[0012] The conveying loop includes a first conveying line and a traverse mechanism, which are respectively the long sides of the rectangular closed loop, and a first conveying assembly and a second conveying assembly, which are respectively the short sides of the rectangular closed loop;

[0013] The first conveying assembly includes a first turntable, a second conveying line and a first transplanting device;

[0014] The second conveying assembly includes a second turntable, a third conveying line and a second transplanting device;

[0015] The first conveying line is arranged to pass through the loading station and the unloading station;

[0016] The first turntable is configured to be connected between the first conveyor line and the second conveyor line, and is used to rotate the material frame from the first conveyor line by 90 degrees and then enter the second conveyor line;

[0017] The second conveying line is configured to convey and buffer the material frame;

[0018] The first transfer device is configured to transfer the material frame from the second conveying line to the transverse movement mechanism;

[0019] The traverse mechanism is configured to pass through the solvent cleaning station, the spraying station and the drying station;

[0020] The second transfer device is configured to transfer the material frame from the transverse transfer mechanism to the third conveyor line;

[0021] The third conveying line is configured to convey the material frame to the second turntable;

[0022] The second turntable is configured to be connected between the first conveying line and the third conveying line, and is used to allow the material frame from the third conveying line to rotate 90 degrees and then enter the first conveying line.

[0023] Furthermore, the loading station includes a tray lifting device, a mechanical arm, a gasket suction device and a gasket clamping device;

[0024] The tray lifting device is configured to lift the tray to a preset position when the tray is detected;

[0025] The mechanical arm is configured to enable the gasket suction device and the gasket clamping device to perform three-dimensional movement;

[0026] The gasket suction device is configured to take the gasket out of the tray by vacuum adsorption and rotate the gasket from a horizontal state to a vertical state;

[0027] The gasket clamping device is configured to clamp the gasket in a vertical state and load it into the material frame; wherein,

[0028] The material frame has an open structure surrounded by two side walls and a bottom, and is provided with a plurality of card slots inside, a plurality of water leakage holes are formed between adjacent card slots and at the bottom of the card slots, and two hook columns are formed on the outer side of each side wall of the material frame; the card slot has an open structure surrounded by two side walls, a bottom and front and rear baffles, and a plurality of storage card positions are defined inside the card slot by a plurality of partitions formed perpendicular to the inner surface of the side walls of the card slot;

[0029] The gasket clamping device comprises a seat body, and a fixed clamping part and a movable clamping part connected to the seat body;

[0030] The seat body is provided with a plurality of gas channels, one end of the gas channel is connected to the gas source, and the other end is aligned with the area between the fixed clamping part and the movable clamping part;

[0031] The fixing clamp head comprises a support plate formed of insulating material, and an electro-adsorption layer structure formed on the support plate, wherein the electro-adsorption layer structure is connected to a power source disposed in the seat body so as to form electro-adsorption on the pad in contact with the structure when powered on;

[0032] The movable clamping part includes an electrodeformable layer structure and an electroadsorption layer structure formed on the electrodeformable layer structure, wherein the electrodeformable layer structure is connected to a power source disposed in the base body so as to deform in a preset direction when powered on;

[0033] The electroadsorption layer structure includes a polyimide layer, a pattern electrode layer formed on the polyimide layer, and a polydimethylsiloxane rubber layer formed on the pattern electrode layer, wherein the pattern electrode layer is formed by a plurality of groups of electrodes arranged alternately;

[0034] The electrodeformable layer structure comprises a plurality of stacked electrodeformable layers, wherein the electrodeformable layers sequentially comprise an acrylic elastomer layer, a flexible electrode layer and a flexible insulating protective layer, wherein the flexible electrode layer is formed by carbon nanotube powder coated on the acrylic elastomer layer;

[0035] The electroadsorption layer structure of the movable clamping part is arranged so that the electrodes in its pattern electrode layer extend in the horizontal direction, and the electrodeformable layer structure is pre-stretched so as to be in an outwardly bent state when not actuated.

[0036] Preferably, the polyimide layer has a thickness of 20-50 micrometers, the pattern electrode layer is formed of a copper electrode and has a thickness of 10-100 micrometers, and the polydimethylsiloxane rubber layer has a thickness of 250-400 micrometers.

[0037] Preferably, the number of the electrodeformable layers is 5, and the extension length of the partition in the vertical direction of the inner surface of the side wall is less than 1 / 15 of the diameter of the gasket, and a notch is formed in the central area of ​​the front and rear baffles.

[0038] Furthermore, the turntable includes an incoming material detection unit, a material frame in-place detection unit, a stop unit, a belt conveyor unit, a material frame limiting unit, a rotating shaft and a servo motor.

[0039] Furthermore, the transplanting device includes a support column and two mobile platforms connected thereto and symmetrically arranged;

[0040] The mobile platform comprises a supporting frame, a mobile base and a crankshaft connecting rod assembly, wherein the supporting frame comprises two first steel structures fixed on the supporting columns and parallel to each other, the mobile base comprises a slide, two second steel structures parallel to each other are mounted on the lower surface of the slide, and rolling bearings are respectively arranged on the two outer surfaces of the second steel structures;

[0041] The steel structure is composed of two steel plates connected at an angle of 90 degrees, and the mobile base is arranged so that when it is placed on the support frame, the rolling bearings respectively contact two outer surfaces of the first steel structure to roll along them;

[0042] The lower end of the slide is connected to a clamping unit realized by means of a vacuum suction cup;

[0043] The crankshaft connecting rod assembly includes a servo motor, a crankshaft connecting rod and a pivot seat, wherein the pivot seat is fixedly mounted on a support column, one end of the crankshaft connecting rod is connected to the pivot seat so that it can perform circular motion under the drive of the servo motor, and the other end of the crankshaft connecting rod is connected to a slide.

[0044] Preferably, rubber linings are provided on the first steel structure and the rolling bearing.

[0045] Furthermore, the transverse movement mechanism includes a slide rail device, a slide table device and a suspension device;

[0046] The slide rail device is configured to cause the slide device to perform linear motion;

[0047] The suspension device is installed on the slide device and includes a transverse movement component, a lifting component and a hook component. The transverse movement component and the lifting component are respectively configured to enable the hook component to perform transverse movement and lifting movement. The hook component is configured to hook a hook column of a material frame.

[0048] Further, the solvent cleaning station includes a solvent cleaning tank and a circulating water tank;

[0049] The spray station includes a spray head and a wastewater collection tank;

[0050] The rinsing station comprises a first ultrasonic rinsing module and a second ultrasonic rinsing module, the ultrasonic rinsing module comprises an ultrasonic rinsing tank and a circulating water tank, and the first and second ultrasonic rinsing modules have different ultrasonic frequencies;

[0051] The drying station includes a drying box chamber, a hot air circulation device and a PTC temperature sensor, wherein the hot air circulation device is used to provide hot air to the drying box chamber, and control the temperature and air supply volume of the hot air according to the PTC temperature sensor arranged in the drying box chamber to make the temperature in the drying box chamber at a preset value. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. It is obvious that 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 creative work.

[0054] Figure 1 A three-dimensional diagram showing an example of a fully automatic cleaning line for lithium battery gaskets according to the present invention;

[0055] Figure 2 An example of a material frame 1 according to the present invention is shown;

[0056] Figure 3A-3B An example of a gasket picking device 21 according to the present invention is shown;

[0057] Figure 4 An example of a turntable of the present invention is shown;

[0058] Figure 5A-5B An example of a transplanting device according to the present invention is shown;

[0059] Figure 6 An example of a traverse mechanism according to the present invention is shown. DETAILED DESCRIPTION

[0060] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided by way of example so as to fully convey the spirit of the present invention to those skilled in the art to which the present invention belongs. Therefore, the present invention is not limited to the embodiments disclosed herein.

[0061] Figure 1 A stereoscopic diagram showing an example of a fully automatic cleaning line for lithium battery gaskets according to the present invention is shown.

[0062] The fully automatic cleaning line for lithium battery gaskets according to the present invention may include a material frame 1, a loading station 2, a solvent cleaning station 3, a spraying station 4, a rinsing station 8, a drying station 5, a unloading station 6 and a conveying loop forming a rectangular closed loop.

[0063] The conveying loop includes a first conveying line 71 and a transverse movement mechanism 72 constituting the long side of the rectangular closed loop, and a first conveying assembly and a second conveying assembly constituting the short side of the rectangular closed loop, wherein the first conveying assembly includes a first turntable 73, a second conveying line 74 and a first transplanting device 75, and the second conveying assembly includes a second turntable 76, a third conveying line 77 and a second transplanting device 78.

[0064] In the present invention, the first conveying line 71 is arranged to pass through the loading station 2 and the unloading station 6 to allow the material frame 1 to be conveyed to the loading station 2 and the unloading station 6 .

[0065] The first turntable 73 is used to connect the first conveyor line 71 and the second conveyor line 74 at one end of the first conveyor line 71 , and is configured to allow the material frame 1 from the first conveyor line 71 to enter the second conveyor line 74 after being rotated 90 degrees.

[0066] In the present invention, the second conveyor line 74 can be used to buffer the material frames, thereby providing a coordination buffer for the speed difference between the loading operation and the cleaning operation.

[0067] The first transfer device 75 is used to transfer the material frame from the second conveyor line 74 to the transverse movement mechanism 72.

[0068] The traverse mechanism 72 is arranged to pass through the solvent cleaning station 3 , the spraying station 4 and the drying station 5 to allow the material frame 1 to be transported to the solvent cleaning station 3 , the spraying station 4 and the drying station 5 .

[0069] The second transfer device 78 is used to transfer the material frame 1 from the transverse movement mechanism 72 to the third conveyor line 77 , and the third conveyor line 77 is used to convey the material frame 1 to the second turntable 76 .

[0070] The second turntable 76 is used to connect the first conveyor line 71 and the third conveyor line 77 at the other end of the first conveyor line 71, and is configured to allow the material frame 1 from the third conveyor line 77 to enter the first conveyor line 71 after a 90-degree rotation. Thus, a closed-loop cleaning structure with compact space and operation buffering capacity is formed, which is extremely friendly to industrial application scenarios.

[0071] The loading station 2 is used to automatically load the gaskets stacked in the tray into the material frame 1. Specifically, the loading station 2 may include a tray lifting device, a mechanical arm, and a gasket suction device and a gasket clamping device 21 connected to the mechanical arm.

[0072] The tray lifting device is configured to automatically lift the tray to a preset position when it detects that a tray with stacked gaskets is placed thereon.

[0073] The gasket suction device may include a vacuum suction cup, which is moved to the gasket with the help of a robotic arm, and the gasket on the material tray is adsorbed thereon by vacuum adsorption, thereby removing the gasket from the material tray, and the adsorbed gasket is changed from a horizontal state to a vertical state with the help of a robotic arm.

[0074] The gasket clamping device is used to clamp the upper edge area of ​​the gasket in a vertical state, and load the gasket into a designated position in the material frame 1 with the help of a mechanical arm and release the gasket. When the gasket clamping device clamps the gasket, the gasket suction device is controlled to release the gasket.

[0075] Figure 2 An example of a material frame 1 according to the invention is shown.

[0076] like Figure 2 As shown, the material frame 1 is an open structure mainly surrounded by two side walls and a bottom. A plurality of slots 11 are arranged inside the material frame 1, a plurality of water leakage holes 12 are formed between adjacent slots and at the bottom of the slots, and two hooking columns 13 are formed on the outer side of each side wall of the material frame 1.

[0077] The card slot 11 is an open structure surrounded by two side walls, a bottom, and front and rear baffles, wherein a plurality of card storage positions 14 are defined inside the card slot 11 by a plurality of partitions formed perpendicular to the inner surfaces of the side walls for storing gaskets. Therefore, the gaskets can be loaded into the respective card storage positions in the card slot 11 in parallel with the baffles and separated from each other.

[0078] In the present invention, the extension length of the partition in the vertical direction of the inner surface of the side wall is set to be less than 1 / 15 of the diameter of the gasket, thereby allowing most of the gasket area to be exposed to the outside; accordingly, a notch is also formed in the central area of ​​the front and rear baffles to allow most of the gasket area located in the outermost storage card position of the card slot 11 to be exposed to the outside. This arrangement is conducive to the subsequent cleaning operation.

[0079] In order to improve the cleaning efficiency, the gap between adjacent gaskets in the card slot 11 is usually very limited so that more gaskets can be accommodated for cleaning operations at the same time. Therefore, this requires that the gasket clamping device can realize opening and closing operations in a limited space and can be applicable to gaskets of different sizes within a certain range. To this end, the present invention designs a gasket clamping device, which has a thin chuck size and can automatically adapt to gaskets of different sizes within a typical gasket thickness range without mechanical drive. Compared with the existing mechanical claw structure, it can greatly reduce the structural and control complexity, which is very beneficial for industrial application scenarios.

[0080] Figure 3A-3B An example of a shim pick-up device 21 according to the present invention is shown.

[0081] The gasket clamping device comprises a base body 211 , and a fixed clamping part 212 and a movable clamping part 213 connected to the base body 211 .

[0082] The fixing clamp part 212 includes a support plate formed of insulating material and an electroadsorption layer structure formed on the support plate, wherein the electroadsorption layer structure is connected to a power source disposed in the seat body 211 so as to form electroadsorption on the pad area in contact with it when powered on.

[0083] The movable clamping part 213 includes an electrodeformable layer structure and an electroadsorption layer structure formed on the electrodeformable layer structure, wherein the electrodeformable layer structure is connected to a power source disposed in the base body so as to be deformed in a preset direction when powered on.

[0084] The electroadsorption layer structure includes a polyimide layer 215, a pattern electrode layer 216 formed on the polyimide layer, and a polydimethylsiloxane rubber layer 217 formed on the pattern electrode layer. The polyimide layer has a thickness of 20-50 microns, the pattern electrode layer is formed by a plurality of groups of alternately arranged copper electrodes and has a thickness of 10-100 microns, and the polydimethylsiloxane rubber layer can have a thickness of 250-400 microns. When power is supplied to the pattern electrode layer, the alternately arranged electrodes will generate a fringe electric field, which acts on the polydimethylsiloxane rubber layer with a high dielectric constant and causes the dielectric polarization therein, thereby generating an electric adsorption force on the gasket contacting the polydimethylsiloxane rubber layer. In the present invention, the polyimide layer is particularly provided in the electroadsorption layer structure, which can effectively improve the tensile strength of the entire layer structure and maintain the stability of its performance and service life.

[0085] The electrodeformable layer structure includes a plurality of stacked electrodeformable layers, each of which includes an acrylic elastomer layer 218, a flexible electrode layer 219 and a flexible insulating protective layer 2110, wherein the flexible electrode layer can be formed by coating carbon nanotube powder on the acrylic elastomer layer.

[0086] In the electroadsorption layer structure of the movable clamping part 213, the electrodes alternately arranged in the pattern electrode layer are arranged to extend in the horizontal direction, thereby limiting the deformation direction of the electrodeformable layer so that it can only bend and deform in the vertical direction.

[0087] Considering the effect of thickness on deformation performance, the number of electrodeformable layers is preferably 5, thereby allowing for maximum deformation capability.

[0088] In addition, in order to make the gasket picking device more easily approach the gasket, it is also necessary to pre-stretch the electrodeformable layer structure of the movable clamping part 213 so that it is in an outwardly bent state when not actuated, thereby providing a larger opening.

[0089] During use, when the gasket is brought to the designated position in a vertical state by means of the gasket suction device, the mechanical arm drives the gasket clamping device so that the adsorption side of the fixed clamp head contacts one side of the gasket. At this time, the power supply in the control seat body is powered to the fixed clamp head and the movable clamp head, and the electrodeformable layer of the movable clamp head will make the movable clamp head bend toward the side of the gasket until it contacts it. Thus, the electroadsorption layer structure of the fixed clamp head and the movable clamp head will act on the gasket at the same time to clamp it. At this point, those skilled in the art can understand that the fixed clamp head and the movable clamp head of the present invention can have a very small thickness, which can realize the clamping operation in a small space, and can adapt to gaskets of different sizes by means of the setting of the movable clamp head, and it is easy to position during operation without the need for complex alignment auxiliary equipment.

[0090] Furthermore, a plurality of gas channels 214 are provided inside the seat body, one end of the gas channel is connected to the gas source, and the gas outlet at the other end is aligned with the area between the fixed clamping part and the movable clamping part, for providing impact airflow to the gasket when the gasket is released, thereby assisting the gasket to detach from the clamping part. This can effectively prevent the gasket from accidentally sticking to the clamping part, and can also provide a certain degree of air washing effect to the gasket.

[0091] Therefore, when the gasket is clamped, the gasket picking device can insert the gasket into the corresponding storage card position by means of the mechanical arm, and release the clamping head by stopping the power supply. The gas passage in the seat body can also be used to output air flow to the gasket to promote the gasket to be separated.

[0092] When the material frame is fully loaded with materials, the first conveyor line delivers it to the first turntable 73.

[0093] Figure 4 An example of the turntable of the present invention is shown, which includes a material incoming detection unit 731, a material frame in place detection unit 732, a stop unit 733, a belt conveyor unit 734, a material frame limiting unit 735, a rotating shaft 736 and a servo motor. When the material frame enters and is limited to a preset position by means of the material incoming detection unit 731, the material frame in place detection unit 732, the stop unit 733 and the material frame limiting unit 735, the belt conveyor unit 734 and the material frame thereon are driven to rotate 90 degrees by the servo motor and the rotating shaft 736, and then the material frame is conveyed to the second conveyor line 74 by means of the belt conveyor unit 734.

[0094] The second conveyor line 74 continues to convey the material frame to the first transfer device 75 , which transfers the material frame to the transverse movement mechanism 72 .

[0095] Since the material frame is usually heavy and its size varies, the existing transplanting structure usually has a relatively complex and bulky mechanical structure to achieve such load-bearing capacity and size adaptability, and requires more energy to output the required force and / or torque. To solve this problem, the present invention also specially designs an improved transplanting device, which can automatically adapt to material frames of different shapes / sizes, and has a simple, reliable and energy-efficient transmission structure, which can well meet the needs of reliable performance, low power consumption, simple structure and easy maintenance and control in industrial application scenarios.

[0096] Figure 5A-5B An example of the first (second) transplanting device according to the present invention is shown. As shown in FIG5 , the transplanting device 75 includes a support column 751 for connecting the mechanical arm and two symmetrically arranged mobile platforms connected thereto, wherein the mobile platforms are used to move the vacuum suction cup 755 so that it is adsorbed on the material frame, thereby forming a clamping effect on the material frame.

[0097] The mobile platform includes a support frame 752, a mobile base 753 and a crankshaft connecting rod assembly 754. The support frame 752 includes two first steel structures 756 fixed on the support column and parallel to each other, which are used to allow the mobile base to move thereon. The mobile base 753 includes a slide 757, on the lower surface of which two second steel structures 758 are installed, and rolling bearings 759 are respectively provided on the two outer surfaces of the second steel structures. Figure 5B As shown, the first (second) steel structure may be constructed of two steel plates connected at a 90 degree angle, thereby allowing a large load-bearing capacity to be provided at a lower weight.

[0098] The mobile base is configured such that when the mobile base is placed on the support frame, the rolling bearings respectively contact the two outer surfaces of the first steel structure and can roll thereon. In the present invention, in order to improve the positioning effect, a rubber lining can be provided on the first steel structure and the rolling bearings to increase the friction between the two.

[0099] The lower end surface of the slide is connected to a clamping unit realized by means of a vacuum suction cup.

[0100] The crankshaft connecting rod assembly includes a servo motor, a crankshaft connecting rod and a pivot seat, wherein the pivot seat is fixedly mounted on the support column, one end of the crankshaft connecting rod is connected to the pivot seat so that it can perform circular motion under the drive of the servo motor, and the other end of the crankshaft connecting rod is connected to the slide. Therefore, by controlling the servo motor to drive the crankshaft connecting rod to rotate, the slide (i.e., the mobile base) can be driven to slide on the support frame, thereby adjusting the distance between the vacuum suction cups of the two clamping units respectively connected to the two mobile platforms, thereby allowing the material frames of different sizes to be adapted.

[0101] In the present invention, the vacuum suction cup may be formed of an elastic material, thereby allowing the vacuum suction cup to be deformed to a certain extent, thereby adapting to material frames of different shapes.

[0102] Based on the above, it can be recognized that the present invention provides a large load-bearing capacity and adjustable clamping distance function for the transplanting device with a very simple and lightweight structure by means of specific steel structures, rolling bearings, crankshaft connecting rods and other parts. At the same time, since the power transmission structure is simple and reliable, it allows reliable realization of the power transmission function, which is also very beneficial for industrial application scenarios, and can greatly reduce manufacturing and maintenance costs and ensure high operating efficiency. In addition, its power source can adopt a servo motor, which is also beneficial for improving the energy efficiency of the system compared to hydraulic and pneumatic methods.

[0103] Figure 6 An example of a traverse mechanism 72 according to the present invention is shown. Figure 6 As shown, the transverse movement mechanism 72 includes a slide rail device 721, a slide platform device 722 and a suspension device 723.

[0104] The slide rail device 721 is configured to enable the slide device to move linearly to pass through each cleaning and drying station.

[0105] The suspension device is installed on the slide device, including a transverse movement component 724, a lifting component 725 and a hook component 726.

[0106] The transverse movement component and the lifting component are respectively used to make the hook component perform transverse movement and lifting movement, and the hook component is used to hook the hook column of the material frame.

[0107] When the first transfer device transfers the material frame to the hook assembly, the transverse movement mechanism transversely moves the material frame into the solvent cleaning station 3.

[0108] The solvent cleaning station includes a solvent cleaning tank and a circulating water tank. The solvent cleaning tank is used to contain the cleaning solvent, and the circulating water tank is connected to the solvent cleaning tank to allow the solvent to circulate and flow for use. A heating device may be provided in the circulating water tank to heat the solvent, thereby improving the cleaning effect.

[0109] At the solvent cleaning station, the suspension device 723 completely immerses the material frame in the cleaning solvent. In order to allow the gasket in the storage card slot to fully contact the solvent, the suspension device is also configured to allow the material frame to move horizontally and vertically in the solvent cleaning tank at the same time, thereby allowing the gasket in the storage card slot to shake in a limited space and drive the solvent to form impact contact, thereby ensuring that the gasket can fully contact the solvent and avoiding the problem of insufficient cleaning due to some areas of the gasket being closely attached to the inner wall of the storage card slot.

[0110] When the solvent cleaning process is finished, the suspension device resets the material frame to leave the solvent cleaning tank, and the transverse movement mechanism drives the material frame to move transversely to the spraying station.

[0111] The spraying station includes a spray head and a wastewater collection box, wherein the spray head is used to spray pure water to the material frame to wash away the residual solvent on the dilution gasket, and the wastewater collection box is used to collect wastewater for recycling.

[0112] At the spraying station, the suspension device is arranged to make the material frame perform a small range of reciprocating motion in the lateral direction at the spraying position, the purpose of which is also to increase the contact between the gasket surface and the water and improve the cleaning efficiency.

[0113] After the spraying process is completed, the transverse movement mechanism drives the material frame to move transversely to the rinsing station.

[0114] The rinsing station includes a first ultrasonic rinsing module and a second ultrasonic rinsing module. The ultrasonic rinsing module includes an ultrasonic rinsing tank and a circulating water tank, wherein the ultrasonic rinsing tank is used to clean the gasket in water using ultrasonic waves, and the circulating water tank is used to connect the ultrasonic rinsing tank to circulate water.

[0115] In the present invention, the first and second ultrasonic rinsing modules have different ultrasonic frequencies to remove particle residues of different sizes on the gasket in a targeted manner. At the same time, the residual solvent on the gasket can be further diluted by means of the ultrasonic cleaning solution.

[0116] Preferably, a heating device is provided in the ultrasonic rinsing tank.

[0117] After the rinsing process is completed, the transverse movement mechanism drives the material frame to move transversely to the drying station.

[0118] The drying station includes a drying box chamber, a hot air circulation device and a PTC temperature sensor, wherein the hot air circulation device is used to provide hot air to the drying box chamber, and control the temperature and air supply volume of the hot air according to the PTC temperature sensor arranged in the drying box chamber to make the temperature in the drying box chamber at a preset value.

[0119] When the drying process is finished, the lateral movement mechanism drives the material frame to lateral movement to the end of its travel. At this time, the second transfer device 78 takes the material frame out of the lateral movement mechanism and transfers it to the third conveyor line 77. The second transfer device has the same structure as the first transfer device, so it is not repeated here.

[0120] The third conveyor line 77 conveys the material frame to the second turntable 76, which rotates it 90 degrees and conveys it to the first conveyor line. The second turntable has the same structure as the first turntable, so it will not be described in detail.

[0121] On the first conveyor line, the material frame is conveyed to the unloading station to allow the cleaned gasket to be taken out.

[0122] In the present invention, in order to improve efficiency, multiple loading stations and unloading stations may be provided, for example, two, to allow parallel operation.

[0123] Preferably, the material frame may be composed of a split splicing structure, thereby allowing the card slot to be replaced to be compatible with gaskets within a certain size range.

[0124] In addition, in the cleaning line of the present invention, all positions of the entire line that come into contact with the gasket are made of non-metallic materials, which can shield the risk of secondary damage and contamination while ensuring the cleanliness of the product.

[0125] Although the present invention has been described above through specific embodiments in conjunction with the accompanying drawings, those skilled in the art will readily recognize that the above embodiments are merely exemplary and are used to illustrate the principles of the present invention, and do not limit the scope of the present invention. Those skilled in the art may make various combinations, modifications and equivalent substitutions to the above embodiments without departing from the spirit and scope of the present invention.

Claims

1. A fully automatic cleaning line for lithium battery gaskets, which includes a material frame, a loading station, a solvent cleaning station, a spraying station, a rinsing station, a drying station and a unloading station; The loading station is configured to load lithium battery gaskets into the material frame; The solvent cleaning station is configured to clean the lithium battery gasket using a solvent; The spraying station is configured to spray the lithium battery gasket with pure water; The rinsing station is configured to rinse the lithium battery gasket using ultrasonic waves; The drying station is configured to dry the lithium battery gasket using hot air; The unloading station is configured to allow the cleaned lithium battery gasket to be taken out; The lithium battery gasket fully automatic cleaning line also includes a conveying loop forming a rectangular closed loop; The conveying loop includes a first conveying line and a traverse mechanism, which are respectively the long sides of the rectangular closed loop, and a first conveying assembly and a second conveying assembly, which are respectively the short sides of the rectangular closed loop; The first conveying assembly includes a first turntable, a second conveying line and a first transplanting device; The second conveying assembly includes a second turntable, a third conveying line and a second transplanting device; The first conveying line is arranged to pass through the loading station and the unloading station; The first turntable is configured to be connected between the first conveyor line and the second conveyor line, and is used to rotate the material frame from the first conveyor line by 90 degrees and then enter the second conveyor line; The second conveying line is configured to convey and buffer the material frame; The first transfer device is configured to transfer the material frame from the second conveying line to the transverse movement mechanism; The traverse mechanism is configured to pass through the solvent cleaning station, the spraying station and the drying station; The second transfer device is configured to transfer the material frame from the transverse transfer mechanism to the third conveyor line; The third conveying line is configured to convey the material frame to the second turntable; The second turntable is arranged to be connected between the first conveying line and the third conveying line, and is used to rotate the material frame from the third conveying line by 90 degrees before entering the first conveying line; The loading station includes a tray lifting device, a mechanical arm, a gasket suction device and a gasket clamping device; The tray lifting device is configured to lift the tray to a preset position when the tray is detected; The mechanical arm is configured to enable the gasket suction device and the gasket clamping device to perform three-dimensional movement; The gasket suction device is configured to take the gasket out of the tray by vacuum adsorption and rotate the gasket from a horizontal state to a vertical state; The gasket clamping device is configured to clamp the gasket in a vertical state and load it into the material frame; wherein, The material frame has an open structure surrounded by two side walls and a bottom, and is provided with a plurality of card slots inside, a plurality of water leakage holes are formed between adjacent card slots and at the bottom of the card slots, and two hook columns are formed on the outer side of each side wall of the material frame; the card slot has an open structure surrounded by two side walls, a bottom and front and rear baffles, and a plurality of storage card positions are defined inside the card slot by a plurality of partitions formed perpendicular to the inner surface of the side walls of the card slot; The gasket clamping device comprises a seat body, and a fixed clamping part and a movable clamping part connected to the seat body; The seat body is provided with a plurality of gas channels, one end of the gas channel is connected to the gas source, and the other end is aligned with the area between the fixed clamping part and the movable clamping part; The fixing clamp head comprises a support plate formed of insulating material, and an electro-adsorption layer structure formed on the support plate, wherein the electro-adsorption layer structure is connected to a power source disposed in the seat body so as to form electro-adsorption on the pad in contact with the structure when powered on; The movable clamping part includes an electrodeformable layer structure and an electroadsorption layer structure formed on the electrodeformable layer structure, wherein the electrodeformable layer structure is connected to a power source disposed in the base body so as to deform in a preset direction when powered on; The electroadsorption layer structure includes a polyimide layer, a pattern electrode layer formed on the polyimide layer, and a polydimethylsiloxane rubber layer formed on the pattern electrode layer, wherein the pattern electrode layer is formed by a plurality of groups of electrodes arranged alternately; The electrodeformable layer structure comprises a plurality of stacked electrodeformable layers, wherein the electrodeformable layers sequentially comprise an acrylic elastomer layer, a flexible electrode layer and a flexible insulating protective layer, wherein the flexible electrode layer is formed by carbon nanotube powder coated on the acrylic elastomer layer; The electroadsorption layer structure of the movable clamping part is arranged so that the electrodes in its pattern electrode layer extend in the horizontal direction, and the electrodeformable layer structure is pre-stretched so as to be in an outwardly bent state when not actuated.

2. The fully automatic cleaning line for lithium battery gaskets according to claim 1, wherein: The polyimide layer has a thickness of 20-50 micrometers, the pattern electrode layer is formed of a copper electrode and has a thickness of 10-100 micrometers, and the polydimethylsiloxane rubber layer has a thickness of 250-400 micrometers.

3. The fully automatic cleaning line for lithium battery gaskets according to claim 1, wherein: The number of the electrodeformable layers is 5, and the extension length of the partition in the vertical direction of the inner surface of the side wall is less than 1 / 15 of the diameter of the gasket, and a notch is formed in the central area of ​​the front and rear baffles.

4. The fully automatic cleaning line for lithium battery gaskets according to any one of claims 1 to 3, wherein: The turntable comprises an incoming material detection unit, a material frame in-place detection unit, a stop unit, a belt conveying unit, a material frame limiting unit, a rotating shaft and a servo motor.

5. The fully automatic cleaning line for lithium battery gaskets according to any one of claims 1 to 3, wherein: The transplanting device includes a support column and two symmetrically arranged mobile platforms connected thereto; The mobile platform comprises a supporting frame, a mobile base and a crankshaft connecting rod assembly, wherein the supporting frame comprises two first steel structures fixed on the supporting columns and parallel to each other, the mobile base comprises a slide, two second steel structures parallel to each other are mounted on the lower surface of the slide, and rolling bearings are respectively arranged on the two outer surfaces of the second steel structures; The steel structure is composed of two steel plates connected at an angle of 90 degrees, and the mobile base is arranged so that when it is placed on the support frame, the rolling bearings respectively contact two outer surfaces of the first steel structure to roll along them; The lower end of the slide is connected to a clamping unit realized by means of a vacuum suction cup; The crankshaft connecting rod assembly includes a servo motor, a crankshaft connecting rod and a pivot seat, wherein the pivot seat is fixedly mounted on a support column, one end of the crankshaft connecting rod is connected to the pivot seat so that it can perform circular motion under the drive of the servo motor, and the other end of the crankshaft connecting rod is connected to a slide.

6. The fully automatic cleaning line for lithium battery gaskets according to claim 5, wherein: The first steel structure and the rolling bearing are provided with rubber linings.

7. The fully automatic cleaning line for lithium battery gaskets according to claim 5, wherein: The transverse movement mechanism includes a slide rail device, a slide table device and a suspension device; The slide rail device is configured to cause the slide device to perform linear motion; The suspension device is installed on the slide device and includes a transverse movement component, a lifting component and a hook component. The transverse movement component and the lifting component are respectively configured to enable the hook component to perform transverse movement and lifting movement. The hook component is configured to hook a hook column of a material frame.

8. The fully automatic cleaning line for lithium battery gaskets according to claim 7, wherein: The solvent cleaning station includes a solvent cleaning tank and a circulating water tank; The spray station includes a spray head and a wastewater collection tank; The rinsing station comprises a first ultrasonic rinsing module and a second ultrasonic rinsing module, the ultrasonic rinsing module comprises an ultrasonic rinsing tank and a circulating water tank, and the first and second ultrasonic rinsing modules have different ultrasonic frequencies; The drying station includes a drying box chamber, a hot air circulation device and a PTC temperature sensor, wherein the hot air circulation device is used to provide hot air to the drying box chamber, and control the temperature and air supply volume of the hot air according to the PTC temperature sensor arranged in the drying box chamber to make the temperature in the drying box chamber at a preset value.

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