Equipment for removing steel cuttings in steel shell and using method

Abstract

The invention discloses a device for removing steel scraps in a steel shell and a using method, and relates to the technical field of battery production, the device comprises a cleaning platform and a bearing assembly, the top of the cleaning platform is sequentially provided with a feeding platform, a movable platform and a discharging platform, and a magnetic attraction assembly is arranged below the movable platform; an adsorption assembly is arranged above the movable platform; a plurality of battery steel shells are borne on the bearing assembly; the method comprises the steps of feeding, battery steel shell cleaning, discharging and steel pipe cleaning. When the battery steel shells are cleaned, the bearing assembly bears the multiple battery steel shells and is located between the magnetic attraction assembly and the adsorption assembly, and the bearing assembly stretches into inner cavities of the battery steel shells through the magnetic attraction assembly to adsorb steel scraps attached to the inner cavities of the battery steel shells.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and particularly relates to an internal steel chip removal device for a steel shell and a usage method thereof. Background Art

[0002] In the field of manufacturing cylindrical lithium-ion batteries, the metal shell, as the core encapsulation component, its processing precision and surface cleanliness directly affect the electrochemical performance and safety reliability of the battery. Currently, the manufacturing of circular metal shells (steel shells) usually adopts a continuous drawing and forming process to obtain a cylindrical substrate with a predetermined wall thickness and diameter, and then the end is precisely trimmed by laser cutting technology to meet the assembly dimension requirements. However, the high-temperature energy input during the laser cutting process will cause an oxidation reaction at the cut edge, forming an oxide layer and a heat-affected zone. To ensure the surface quality of the shell and the reliability of the subsequent welding process, mechanical grinding treatment is usually required for the cut area.

[0003] During the grinding operation, when the high-speed rotating grinding tool contacts the surface of the steel shell, the generated metal debris (steel chips) is easily splashed radially along the inner wall of the shell under the action of centrifugal force. Since the steel shell is a thin-walled and hollow structure, its inner cavity and the grinding area form an open channel, resulting in a large number of fine steel chip particles invading the internal space of the shell through the cut. Such steel chip residues will cause multiple technical problems: First, the free metal particles may undergo an electrochemical reaction with the electrolyte during the battery filling process, generating by-products such as hydrogen, leading to an abnormal increase in the internal pressure of the battery; Second, the steel chips may pierce the separator during the charge and discharge cycle of the battery, causing a short circuit between the positive and negative electrodes, resulting in a decrease in battery capacity and even a risk of thermal runaway; In addition, the residual foreign matter will also reduce the contact resistance consistency at the welding interface between the shell and the cover plate, affecting the voltage balance performance of the battery pack.

[0004] In the current process, auxiliary processes such as adding air gun blowing or non-woven fabric wiping are usually adopted to solve the problem of steel chip residues. However, limited by the accessibility of the deep cavity structure of the steel shell, although the above auxiliary processes can remove the steel chips attached to the surface of the steel shell and the shallow inner wall, the cleaning effect on the steel chip particles attached to the deep inner wall or the corner area is limited. And the residual probability increases exponentially with the increase of the shell height. The residual of steel chips restricts the mass production yield and long-term reliability of high-energy density batteries.

[0005] Therefore, there is an urgent need to develop a technology that can fully remove the internal steel chips of the steel shell to provide a basic process guarantee for the manufacturing of high-performance batteries. Summary of the Invention

[0006] The purpose of the present invention is to provide an internal steel chip removal device for a steel shell and a usage method thereof, to solve the problem that the cleaning effect on the steel chip particles attached to the deep inner wall or the corner area is limited, which restricts the mass production yield and long-term reliability of high-energy density batteries.

[0007] The object of the present invention can be achieved by the following technical solutions:

[0008] An internal steel chip removing device for a steel shell, comprising a cleaning platform and a carrying component. On the top of the cleaning platform, a feeding platform, a movable platform and a discharging platform are sequentially arranged. A magnetic attraction component is arranged below the movable platform, and an adsorption component is arranged above the movable platform;

[0009] A plurality of battery steel shells are carried on the carrying component;

[0010] When cleaning the battery steel shell, the carrying component carries a plurality of the battery steel shells between the magnetic attraction component and the adsorption component. The magnetic attraction component extends into the inner cavity of the battery steel shell to adsorb the steel chips attached to the inner cavity of the battery steel shell.

[0011] As a further scheme of the present invention: the cleaning platform includes a base, and a table board is horizontally arranged on the top of the base;

[0012] The feeding platform is arranged on one side of the table board. The feeding platform includes two groups of symmetrically arranged supporting plates I, and a slide rail I is arranged on the supporting plate I;

[0013] The discharging platform is arranged on the other side of the table board. The discharging platform includes two groups of symmetrically arranged supporting plates II, and a slide rail II is arranged on the top of the supporting plate II;

[0014] The supporting plate II and the supporting plate I are on the same horizontal plane.

[0015] As a further scheme of the present invention: the movable platform includes a plurality of movable guide posts fixed on the table board. The same-side movable guide posts are slidably connected with a movable bearing plate, and a return spring is sleeved on the movable guide posts;

[0016] The movable bearing plate and the supporting plate II and the supporting plate I are on the same horizontal plane.

[0017] As a further scheme of the present invention: slide rails III are symmetrically arranged on the top surface of the movable bearing plate. The same-side slide rail I, slide rail II and slide rail III are linearly distributed and cooperate to form a long slide rail.

[0018] As a further scheme of the present invention: the carrying component includes a carrying bottom plate, and multiple groups of sliders are symmetrically arranged on both sides of the bottom of the carrying bottom plate. A supporting plate is connected to the top of the carrying bottom plate;

[0019] A plurality of placing holes are arranged in a matrix on the top surface of the carrying bottom plate, and supporting holes are respectively arranged on the supporting plate corresponding to the positions of the placing holes.

[0020] As a further solution of the present invention: The magnetic attraction component includes a mounting flat plate, which is slidably arranged on the table plate. Two sets of cylinders I are arranged on the bottom surface of the table plate, and the telescopic rods of the two sets of cylinders I penetrate through the table plate and are connected to the mounting flat plate;

[0021] A plurality of fixed platforms are mounted in a matrix on the top of the mounting flat plate, and a set of race steel pipes are connected to each fixed platform;

[0022] A plurality of guide rods are arranged on the bottom surface of the mounting flat plate, and the plurality of guide rods are cooperatively connected with a fixed plate. Magnet bars are arranged in a matrix on the top of the fixed plate, and the magnet bars are adapted to the race steel pipes. A cylinder II is arranged in the cleaning platform, and the telescopic rod of the cylinder II is connected to the bottom surface of the fixed plate.

[0023] As a further solution of the present invention: A helically wound gathering groove is formed on the outer shaft surface of the race steel pipe.

[0024] As a further solution of the present invention: The adsorption component includes a plurality of fixed guide columns arranged on the table plate. The plurality of fixed guide columns penetrate through the same-side movable bearing plate and are sleeved with a movable plate. A plurality of mounting seats are arranged at the bottom of the movable plate, and a plurality of docking heads are equidistantly arranged in the plurality of mounting seats. A driving cylinder is arranged on the table plate, and the telescopic rod of the driving cylinder penetrates through the movable bearing plate and is connected to the movable plate.

[0025] As a further solution of the present invention: An adsorption port is formed in the middle of the docking head, and the adsorption port penetrates through the docking head. The plurality of docking heads are cooperatively connected with a main pipe, and the other ends of the plurality of main pipes cooperatively pass through the movable plate and are communicated with an external dust removal and adsorption device.

[0026] As a further solution of the present invention: A method for using an internal steel chip removing device for a steel shell, characterized in that the above-mentioned internal steel chip removing device for a steel shell is used, and the method includes the following steps:

[0027] Step 1. Feeding: The battery steel shells after being processed by conventional auxiliary processes such as air gun blowing or non-woven fabric wiping are sequentially placed on the bearing component;

[0028] Step 2. Cleaning the battery steel shell: Move the bearing component with the placed battery steel shell to directly below the adsorption component for preliminary positioning. Then, synchronously start the driving cylinders on both sides to drive the movable plate to move downward for precise positioning. The movable plate drives the limiting rod and the docking head to move downward. The limiting rod abuts against the movable platform, and the docking head abuts against the bearing component and moves downward smoothly;

[0029] The downward movement of the bearing component drives the battery steel shell to move downward to a set position, so that the battery steel shell is sleeved on the race steel pipe, and the residual steel chips deep in the inner cavity of the battery steel shell are adsorbed by the magnetic force generated by the magnet bar;

[0030] Step 3: Unloading: After the inner cavity of the battery steel shell is fully adsorbed, start the driving cylinder to drive the movable plate to move up, release the carrying assembly, and move the carrying assembly carrying the magnetically adsorbed battery steel shell to the unloading platform for unloading;

[0031] Step 4: Cleaning the steel pipe: After the bearing assembly is moved out, start the driving cylinder to drive the movable plate downward again and move it to the set position. Then start cylinder 1 and cylinder 2 synchronously to drive the steel pipe with steel chips adsorbed on it to move upward a set distance and insert it into the adsorption port of the docking joint. Start the external dust removal and adsorption equipment to generate suction. Synchronously start cylinder 2 to drive the fixed plate downward. The fixed plate drives the magnetic rod out of the steel pipe, so that the adsorption force on the steel chips accumulated in the collection tank is weakened and the steel chips are sucked away by the external dust removal and adsorption equipment.

[0032] After suction, the magnetic suction component and the adsorption component are reset, and steps one to four are repeated to process the next batch of battery steel shells.

[0033] Beneficial effects of the present invention:

[0034] The present invention drives the movable platform downward by pressing down through the adsorption component, and then the movable platform drives the carrying component downward, and the carrying component drives multiple battery steel shells to move downward and cover on the magnetic attraction component. The magnetic attraction component adsorbs steel chips attached to the inner cavity of the battery steel shell, especially steel chip particles deep in the inner wall or in the corner area, and cooperates with conventional auxiliary processes such as air gun blowing or non-woven fabric wiping to improve the thoroughness and efficiency of steel chip removal, reduce the probability of steel chip residue, thereby reducing the adverse effects of residual steel chips on battery performance, and ensuring the mass production yield and long-term reliability of high-energy density batteries.

[0035] The movable adsorption component of the present invention squeezes the bearing component downward, reduces the movement stroke of the magnetic attraction component, and further reduces the impact of falling off during the movement, so as to more fully clean the steel chips adsorbed on the steel pipe.

[0036] The present invention provides a spirally surrounded gathering groove on the outer axial surface of the steel tube, which further gathers steel chips through the gathering groove (the bottom of the groove is closer to the magnetic rod inside the steel tube, so the adsorption force is stronger, and the steel chips are gathered in the gathering groove, reducing the chance of steel chips contacting the inner wall of the battery steel shell and improving the adsorption effect), so as to fully clean the steel chips remaining in the inner cavity of the battery steel shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 It is a front view structural schematic diagram of the present invention;

[0040] Figure 3 is the schematic right view structure of the present invention;

[0041] Figure 4 is the schematic structure diagram of the adsorption component of the present invention;

[0042] Figure 5 is the schematic connection structure diagram of the docking head and the main pipe of the present invention;

[0043] Figure 6 is the schematic structure diagram of the bearing component of the present invention;

[0044] Figure 7 is the schematic cross-sectional structure diagram of the bearing component of the present invention;

[0045] Figure 8 is the schematic structure diagram of the magnetic attraction component of the present invention;

[0046] Figure 9 is the schematic overall cross-sectional structure diagram of the present invention;

[0047] Figure 10 is Figure 9 the enlarged structure diagram of area A in;

[0048] Figure 11 is the schematic diagram of the state when the bearing component of the present invention starts to be extruded;

[0049] Figure 12 is the schematic diagram of the state when the bearing component of the present invention is extruded in place;

[0050] Figure 13 is the schematic structure diagram of the plug-in steel pipe of the present invention;

[0051] Figure 14 is the schematic socketing structure diagram of the plug-in steel pipe and the battery steel shell of the present invention.

[0052] In the figure: 100, cleaning platform; 101, base; 102, support base; 103, table board; 200, loading platform; 201, first supporting plate; 202, first slide rail; 203, first limiting seat; 300, movable platform; 301, movable bearing plate; 302, movable guide post; 303, limiting boss; 304, chute; 305, rough positioning block; 400, unloading platform; 401, second supporting plate; 402, second slide rail; 403, second limiting seat; 500, magnetic attraction assembly; 501, mounting flat plate; 502, fixed platform; 503, steel pipe; 5031, gathering groove; 504, first cylinder; 505, guide rod; 506, fixing plate; 507, magnetic bar; 508, second cylinder; 600, bearing assembly; 601, bearing bottom plate; 602, slider; 603, supporting plate; 604, limiting piece; 700, adsorption assembly; 701, movable plate; 702, connecting rod; 703, limiting rod; 704, mounting seat; 705, docking head; 706, adsorption port; 707, main pipe; 708, driving cylinder; 709, fixed guide post; 800, battery steel shell. Specific implementation mode

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0054] Embodiment I

[0055] As Figures 1 - 14 shown, this embodiment provides an internal steel chip removing device for a steel shell, which fully adsorbs and removes the steel chip particles attached to the inner cavity of the battery steel shell 800 by setting the magnetic attraction assembly 500, and cooperates with conventional auxiliary processes such as air gun blowing or non-woven fabric wiping to improve the thoroughness and efficiency of steel chip removal, reduce the probability of steel chip residue, thereby reducing the adverse impact of residual steel chips on battery performance, and ensuring the mass production yield and long-term reliability of high-energy density batteries.

[0056] As Figures 1 - 3As shown in the figure, an internal steel chip removing device for a steel shell in this embodiment includes a cleaning platform 100 and a carrying assembly 600. A feeding platform 200, a movable platform 300, and a discharging platform 400 are sequentially arranged on the top of the cleaning platform 100. A magnetic attraction assembly 500 is arranged below the interior of the movable platform 300, and an adsorption assembly 700 is arranged above the movable platform 300. A plurality of battery steel shells 800 are carried on the above-mentioned carrying assembly 600. When cleaning the battery steel shells 800, the carrying assembly 600 carries a plurality of battery steel shells 800 between the magnetic attraction assembly 500 and the adsorption assembly 700, and cooperates with the magnetic attraction assembly 500 and the adsorption assembly 700 to act.

[0057] During processing, the adsorption assembly 700 presses down to drive the movable platform 300 to move downward. Furthermore, the movable platform 300 drives the carrying assembly 600 to move downward, and the carrying assembly 600 drives a plurality of battery steel shells 800 to move downward and sleeve on the magnetic attraction assembly 500. The magnetic attraction assembly 500 adsorbs the steel chips attached to the inner cavity of the battery steel shell 800, especially the steel chip particles in the deep part of the inner wall or the corner area, improving the thoroughness and efficiency of steel chip removal.

[0058] Preferably, as Figure 9 shown, the cleaning platform 100 in this embodiment includes a base 101 arranged in a rectangle. An inner cavity is opened in the base 101, and a support seat 102 is installed in the inner cavity. The support seat 102 is used to install and support some parts of the magnetic attraction assembly 500. And a table board 103 is horizontally arranged on the top of the base 101, and the table board 103 is detachably installed on the base 101. The above-mentioned feeding platform 200, movable platform 300, discharging platform 400, magnetic attraction assembly 500, and adsorption assembly 700 are all arranged on the table board 103.

[0059] Preferably, as Figure 9 shown, the feeding platform 200 in this embodiment is arranged on one side of the above-mentioned table board 103. And the feeding platform 200 includes two groups of supporting plates one 201 arranged on the table board 103. The two groups of supporting plates one 201 are symmetrically distributed about the transverse center line of the table board 103. And slide rails one 202 are arranged on both groups of supporting plates one 201. The two groups of slide rails one 202 are also symmetrically distributed about the transverse center line of the table board 103. Limit seats one 203 are arranged on the outer sides of the two groups of slide rails one 202. When feeding, the empty carrying assembly 600 is moved to the area of the feeding platform 200, and the battery steel shells 800 that have undergone conventional auxiliary processes such as air gun blowing or non-woven fabric wiping are placed on the carrying assembly 600 one by one. Among them, the carrying assembly 600 can slide on the slide rails one 202, but the outward movement range is restricted by the limit seats one 203.

[0060] Preferably, as Figure 9As shown, the unloading platform 400 in this embodiment is arranged on the other side of the table board 103, and the unloading platform 400 includes two groups of second supporting plates 401 arranged on the table board 103. The two groups of second supporting plates 401 are symmetrically distributed about the transverse center line of the table board 103. The second supporting plates 401 and the first supporting plates 201 are in the same horizontal plane, and second slide rails 402 are arranged on one side of the tops of the two groups of second supporting plates 401. The two groups of second slide rails 402 are symmetrically distributed about the transverse center line of the table board 103, and second limiting seats 403 are arranged at the outer ends of the two groups of second slide rails 402 for limiting the loaded component 600 after magnetic attraction treatment to facilitate unloading.

[0061] It should be understood that when the magnetic attraction component 500 is inserted into the inner cavity of the battery steel shell 800 to adsorb the residual steel chips, the steel chips are magnetically adsorbed on the magnetic attraction component 500 due to magnetism, and the structure of the steel chips is tiny. When the magnetic attraction component 500 moves, the surrounding air flow will be disturbed, and the steel chips are easily affected by external factors such as air flow and fall off, thus unable to be fully cleaned and causing secondary pollution. Therefore, in this embodiment, a movable platform 300 that can move downwards and reset is provided, which cooperates with the adsorption component 700 and the loaded component 600 that can move flexibly to move downwards, further shortening the movement stroke of the magnetic attraction component 500 and reducing the influence of external factors such as air flow, so as to make the cleaning of the steel chips more thorough.

[0062] Preferably, as Figure 9 and Figure 10 As shown, the movable platform 300 arranged between the loading platform 200 and the unloading platform 400 in this embodiment includes movable guide posts 302 fixed on the table board 103. There are multiple movable guide posts 302, and preferably four. The four movable guide posts 302 are divided into two groups, with two in each group, located on both sides of the table board 103. The two movable guide posts 302 on the same side are slidably connected with a movable bearing plate 301. The movable bearing plate 301 and the second supporting plates 401 and the first supporting plates 201 are in the same horizontal plane, and a return spring is sleeved on the movable guide posts 302. One side of the return spring abuts against the movable bearing plate 301, and the other side abuts against the top surface of the table board 103, providing an elastic force to enable the pressed movable bearing plate 301 to reset when not stressed.

[0063] The movable platform 300 of this embodiment further includes limiting bosses 303 arranged on the table board 103. There are multiple groups of limiting bosses 303 corresponding to each group of movable bearing plates 301 for limiting and supporting the downward movement position of the movable bearing plates 301. When the adsorption component 700 moves downwards to squeeze the loaded component 600 and the movable platform 300, the limiting bosses 303 limit the extrusion distance to a certain extent.

[0064] Further, a third slide rail is provided inside the top surface of the movable bearing plate 301. The two groups of third slide rails are also symmetrically distributed about the transverse center line of the table board 103, and the first slide rails 202, the second slide rails 402 and the third slide rails on the same side are linearly distributed. The three cooperate to form a longer long slide rail. The bearing assembly 600 can stably slide on the two long slide rails to move from the side of the loading platform 200 to the side of the unloading platform 400.

[0065] Furthermore, two groups of chutes 304 are formed in the middle of the top surface of the movable bearing plate 301. Two groups of rough positioning blocks 305 are slidably arranged in the two groups of chutes 304. When the bearing assembly 600 moves to a set position on the movable platform 300, the bearing assembly 600 is preliminarily positioned by the two groups of rough positioning blocks 305, which facilitates subsequent precise positioning of the bearing assembly 600, and further realizes precise magnetic chip treatment for the inner cavity of the battery steel shell 800.

[0066] Preferably, as Figure 3 、 Figure 6 and Figure 7 shown, the above-mentioned bearing assembly 600 includes a bearing bottom plate 601. A plurality of groups of sliders 602 are symmetrically arranged on both sides of the bottom of the bearing bottom plate 601. The bearing assembly 600 slides on the first slide rails 202 or the second slide rails 402 or the third slide rails through the plurality of groups of sliders 602. A support plate 603 is connected to the top of the bearing bottom plate 601, and a set distance is provided between the support plate 603 and the bearing bottom plate 601 for stably bearing the battery steel shell 800.

[0067] Further, a plurality of placement holes are formed in a matrix on the top surface of the bearing bottom plate 601. An installation round groove is formed on the bearing bottom plate 601 at the bottom end of each placement hole. A limiting piece 604 is installed in the installation round groove for limiting the battery steel shell 800. It should be noted that a through hole is formed in the middle of the limiting piece 604. The diameter of the through hole is larger than the inner cavity of the battery steel shell 800 and smaller than the outer shaft diameter of the battery steel shell 800, so as to stably limit and support the battery steel shell 800 placed in the placement hole. And support holes are formed in the support plate 603 corresponding to the placement holes to support the upper end of the battery steel shell 800. It should be explained that the above-mentioned placement holes and support holes need to be custom processed according to the actual size of the battery steel shell 800. And the cooperation between the placement hole and the installation round groove is more convenient for processing, and the support size is also more accurate, avoiding jamming during the installation of the battery steel shell 800 (if a convex platform structure is directly milled, there will be a small fillet, resulting in the battery steel shell 800 not being able to completely abut against the convex platform).

[0068] And a positioning boss is arranged on the bearing bottom plate 601 of this embodiment on the side close to the chute 304. The length of the positioning boss is equal to the distance between the two groups of rough positioning blocks 305, so as to realize the preliminary positioning of the bearing assembly 600.

[0069] It should be understood that in order for the carrier assembly 600 to drive the battery steel shell 800 to move downward and shorten the movement stroke of the magnetic adsorption assembly 500, a corresponding driving structure is required. Therefore, in this embodiment, the adsorption assembly 700 is provided to press down on the carrier assembly 600 and the movable platform 300 to achieve the driving function.

[0070] Preferably, as Figures 1 - 5 and Figures 9 - 10 shown, the adsorption assembly 700 in this embodiment includes fixed guide columns 709 arranged on both sides of the platen 103. There are multiple fixed guide columns 709, preferably four, and they are grouped in pairs. Two fixed guide columns 709 on the same side penetrate through the movable bearing plate 301 on the same side, and a guide sleeve is provided at the connection between the fixed guide column 709 and the movable bearing plate 301. The guide sleeve is fixed on the movable bearing plate 301, and the movable bearing plate 301 slides on the fixed guide column 709 through the guide sleeve.

[0071] The upper ends of the four fixed guide columns 709 are connected with a movable plate 701 in a matching manner. Guide sleeves are provided at the four corners of the movable plate 701, and the movable plate 701 is slidably arranged on the fixed guide column 709 through the guide sleeves. Multiple groups of mounting seats 704 are arranged at the bottom of the movable plate 701. Multiple groups of docking heads 705 are arranged at equal intervals in the multiple groups of mounting seats 704. The docking heads 705 in the multiple groups of mounting seats 704 correspond one by one to the battery steel shell 800 on the carrier assembly 600 during the adsorption operation. And connection seats are symmetrically arranged at both ends of the bottom surface of the movable plate 701. A connecting rod 702 is installed on the connection seat. A driving cylinder 708 is provided on the platen 103 at the position corresponding to the connecting rod 702. The telescopic rod of the driving cylinder 708 penetrates through the movable bearing plate 301 and is connected to the connecting rod 702. The driving cylinder 708 on both sides drives the up and down movement of the movable plate 701.

[0072] Furthermore, limiting rods 703 are also provided at the four corners of the movable plate 701. The four limiting rods 703 correspond to the movable bearing plate 301 and squeeze the movable platform 300 when the movable plate 701 moves downward to drive the movement of the movable platform 300.

[0073] In order to further ensure the stability of the carrier assembly 600 driving the battery steel shell 800 to move downward, in this embodiment, when the driving cylinder 708 drives the movable plate 701 to move downward, when the limiting rod 703 contacts the movable bearing plate 301, the docking head 705 synchronously contacts the support plate 603. Through multi-point downward pressing, the force on the entire carrier assembly 600 is ensured to be uniform, thereby ensuring the stability of the downward movement. Therefore, the distance from the bottom surface of the limiting rod 703 to the bottom surface of the docking head 705 in this embodiment is equal to the distance from the top surface of the support plate 603 to the top surface of the movable bearing plate 301.

[0074] Further, it should be noted that an adsorption port 706 is provided in the middle of the docking head 705. The diameter of the adsorption port 706 is larger than the outer diameter of the battery steel shell 800. When the docking head 705 presses on the pallet 603, the protruding end of the battery steel shell 800 extends into the adsorption port 706 to avoid extrusion and damage to the structure of the battery steel shell 800.

[0075] Furthermore, in this embodiment, a precise positioning is provided in the middle of the bottom surface of the mounting seat 704, and a positioning hole is correspondingly provided on the pallet 603. After the two groups of rough positioning blocks 305 are initially positioned, through the cooperation of the precise positioning and the positioning hole, further precise positioning is carried out to ensure that the battery steel shell 800 corresponds one by one with the race steel pipe 503 in the magnetic attraction assembly 500.

[0076] In order to fully adsorb and remove the steel chip particles adhering to the inner cavity of the battery steel shell 800, in this embodiment, a magnetic attraction assembly 500 is provided below the movable platform 300. By extending deep into the inner cavity of the battery steel shell 800, magnetic adsorption cleaning is carried out on the steel chips remaining after conventional auxiliary processes such as air gun blowing or non-woven fabric wiping.

[0077] Specifically, as Figure 3 and Figure 8 shown, the magnetic attraction assembly 500 in this embodiment includes a mounting flat plate 501. The mounting flat plate 501 is arranged above the table board 103, and connecting columns are provided at the four corners of the bottom surface of the mounting flat plate 501. The connecting columns penetrate through the table board 103 and are slidably arranged with the table board 103. The mounting flat plate 501 is slidably arranged on the table board 103 through the connecting columns. Two groups of cylinders 504 are correspondingly arranged on the bottom surface of the table board 103. The telescopic rods of the two groups of cylinders 504 penetrate through the table board 103 and are connected to the mounting flat plate 501, and the mounting flat plate 501 is driven to move up and down by the two groups of cylinders 504.

[0078] Further, a plurality of sets of fixing platforms 502 are installed on the top of the installation flat plate 501 in a matrix. A steel pipe 503 is connected to each set of fixing platforms 502. When the plurality of steel pipes 503 are working, they correspond one-to-one with the battery steel shells 800 on the bearing assembly 600. The maximum outer diameter of the steel pipe 503 is smaller than the inner diameter of the battery steel shell 800. And a plurality of guide rods 505 are arranged on the bottom surface of the installation flat plate 501. A fixing plate 506 is connected in cooperation with the plurality of guide rods 505. The fixing plate 506 is slidably arranged on the plurality of guide rods 505. And magnetic rods 507 are arranged in a matrix on the top of the fixing plate 506. The magnetic rods 507 correspond one-to-one with the steel pipes 503. A docking hole is opened in the middle of the steel pipe 503, and a through hole is opened in the middle of the fixing platform 502. The docking hole and the through hole are arranged corresponding to each other, and the diameter of the through hole is greater than or equal to the diameter of the docking hole. The above-mentioned magnetic rods 507 pass through the through holes of the fixing platforms 502 from bottom to top and are inserted into the docking holes of the steel pipes 503, and the magnetic rods 507 are adapted to the docking holes. A second cylinder 508 is arranged on the support base 102. The telescopic rod of the second cylinder 508 is connected to the bottom surface of the fixing plate 506. An avoidance groove is opened in the middle of the table board 103. The size of the avoidance groove is larger than the size of the fixing plate 506, which is convenient for the fixing plate 506 to retract below the table board 103 under the drive of the second cylinder 508.

[0079] It should be noted that the magnetic rod 507 in this embodiment is preferably a cylindrical magnetic rod, and the magnetic force size is customized according to actual needs.

[0080] Furthermore, it should be understood that since the steel pipe 503 extends deep into the inner cavity of the battery steel shell 800 to adsorb the residual steel chips, the steel chips will accumulate on the outer surface of the steel pipe 503 during the adsorption process. When the battery steel shell 800 is reset, the accumulated steel chips have a chance to rub against the inner cavity wall of the battery steel shell 800, thereby affecting the adsorption effect of the steel chips.

[0081] Therefore, as Figure 13 and Figure 14 shown, in this embodiment, a spiral surrounding accumulation groove 5031 is opened on the outer axial surface of the steel pipe 503. The steel chips are further converged through the accumulation groove 5031 (since the bottom of the accumulation groove 5031 is closer to the magnetic rod 507 inside the steel pipe 503, the adsorption force is stronger, and the steel chips are accumulated in the accumulation groove 5031, reducing the chance of the steel chips contacting the inner cavity wall of the battery steel shell 800 and improving the adsorption effect), and the residual steel chips in the inner cavity of the battery steel shell 800 are fully cleaned.

[0082] In this embodiment, the second cylinder 508 is used to drive the fixing plate 506 to move, thereby driving the magnetic rod 507 to insert into or leave the steel pipe 503, changing the adsorption state of the steel chips.

[0083] It should be understood that after the race steel pipe 503 cooperates with the magnetic rod 507 to fully adsorb the steel chips remaining in the inner cavity of the battery steel shell 800, the steel chips gather in the gathering groove 5031. While the gradually accumulating steel chips affect the adsorption effect, they are also prone to falling off, causing pollution in the working area. Therefore, when setting the driving effect of the adsorption component 700 in this embodiment, an adsorption function is also set on the adsorption component 700.

[0084] Wherein, an adsorption port 706 opened in the middle of the docking head 705 penetrates through the docking head 705, and as Figure 5 shown, multiple groups of docking heads 705 are cooperatively connected with a main pipe 707. The other ends of multiple main pipes 707 cooperatively pass through the through grooves opened in the movable plate 701 and are communicated with an external dust removal and adsorption device, such as an industrial vacuum cleaner. Through external adsorption, the steel chips gathered in the gathering groove 5031 of the race steel pipe 503 are removed, reducing the influence caused by the adsorption and accumulation of steel chips.

[0085] When the external dust removal and adsorption device is working in adsorption in this embodiment, the magnetic adsorption component 500 is inserted into the adsorption component 700. At the same time, the cylinder two 508 drives the fixed plate 506 to move downward, and the magnetic rod 507 is pulled out to fully remove the steel chips adsorbed on the race steel pipe 503.

[0086] Embodiment Two

[0087] As Figure 1 、 Figure 11 and Figure 12 shown, this embodiment provides a usage method of an internal steel chip removing device for a steel shell. Using the device in Embodiment One, it includes the following steps:

[0088] Step 1. Feeding: The battery steel shells 800 that have been processed through conventional auxiliary processes such as air gun blowing or non-woven fabric wiping are sequentially placed on the bearing component 600; among them, the battery steel shells 800 pass through the support holes and placement holes from top to bottom.

[0089] Step 2. Cleaning of the battery steel shell 800: The bearing component 600 on which the battery steel shell 800 is placed is moved to directly below the adsorption component 700 and is initially limited by the rough positioning block 305. Then, the driving cylinders 708 on both sides are synchronously started to drive the movable plate 701 to move downward for precise positioning through precise positioning. Moreover, the movable plate 701 drives the limiting rod 703 and the docking head 705 to move downward. The limiting rod 703 abuts against the movable platform 300, and the docking head 705 abuts against the bearing component 600, steadily driving the two to move downward;

[0090] The downward movement of the bearing component 600 drives the battery steel shell 800 to move downward to a set position, so that the battery steel shell 800 is sleeved on the race steel pipe 503, and the magnetic rod 507 generates a magnetic force to adsorb the residual steel chips deep in the inner cavity of the battery steel shell 800.

[0091] Step 3. Unloading: After the inner cavity of the battery steel shell 800 is fully adsorbed, start the driving cylinder 708 to drive the movable plate 701 to move upward, release the bearing assembly 600, move the bearing assembly 600 carrying the magnetically adsorbed battery steel shell 800 to the unloading platform 400 for unloading. Existing technologies such as a manipulator can be used to grab the battery steel shell 800 and enter the next process;

[0092] Step 4. Cleaning of the race steel pipe 503: After the bearing assembly 600 is removed, start the driving cylinder 708 to drive the movable plate 701 to move downward again to a set position. Then, synchronously start the first cylinder 504 and the second cylinder 508 to drive the race steel pipe 503 adsorbed with steel chips to move upward a set distance and insert it into the adsorption port 706 of the docking head 705. Start the external dust removal and adsorption device to generate suction. Synchronously start the second cylinder 508 to drive the fixed plate 506 to move downward, and the fixed plate 506 drives the magnetic rod 507 to move out of the race steel pipe 503, so that the adsorption force on the steel chips gathered in the gathering groove 5031 is weakened and is sucked away by the external dust removal and adsorption device;

[0093] After the suction, the magnetic adsorption component 500 and the adsorption component 700 are reset, and repeat Steps 1 to 4 to process the next batch of battery steel shells 800.

[0094] In this embodiment, the race steel pipe 503 and the magnetic rod 507 in the magnetic adsorption component 500 cooperate to extend into the inner cavity of the battery steel shell 800 to adsorb the residual steel chips, which can fully remove the steel chips attached to the deep inner wall or the corner area. During the adsorption process of the steel chips, the gathering groove 5031 is used for gathering to reduce the influence caused by the movement of the battery steel shell 800. After the adsorption of the race steel pipe 503 is completed, it is further cleaned by the adsorption component 700 to avoid the accumulation of steel chips in the race steel pipe 503 and affect the cleaning of the next batch of battery steel shells 800;

[0095] Moreover, the movable adsorption component 700 is used to squeeze the bearing assembly 600 to move downward, reducing the movement stroke of the magnetic adsorption component 500, thereby reducing the influence of falling off during the movement and more fully cleaning the steel chips adsorbed on the race steel pipe 503.

[0096] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0097] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An internal steel chip removing device for a steel shell, comprising a cleaning platform (100) and a bearing assembly (600), characterized in that, On the top of the cleaning platform (100), a feeding platform (200), a movable platform (300), and a discharging platform (400) are sequentially arranged. A magnetic adsorption component (500) is arranged below the movable platform (300), and an adsorption component (700) is arranged above the movable platform (300). A plurality of battery steel shells (800) are carried on the carrying component (600). When cleaning the battery steel shells (800), the carrying component (600) carries a plurality of the battery steel shells (800) between the magnetic adsorption component (500) and the adsorption component (700). The magnetic adsorption component (500) extends into the inner cavity of the battery steel shell (800) to adsorb the steel chips attached to the inner cavity of the battery steel shell (800).

2. The internal steel chip removing device for a steel shell according to claim 1, characterized in that, The cleaning platform (100) includes a base (101), and a table board (103) is horizontally arranged on the top of the base (101). The feeding platform (200) is arranged on one side of the table board (103). The feeding platform (200) includes two groups of symmetrically arranged supporting plates one (201), and a slide rail one (202) is arranged on the supporting plate one (201). The discharging platform (400) is arranged on the other side of the table board (103). The discharging platform (400) includes two groups of symmetrically arranged supporting plates two (401), and a slide rail two (402) is arranged on the top of the supporting plate two (401). The supporting plate two (401) and the supporting plate one (201) are in the same horizontal plane.

3. An internal steel chip removing device for a steel shell according to claim 2, characterized in that, The movable platform (300) includes a plurality of movable guide posts (302) fixed on the table board (103). The movable guide posts (302) on the same side are slidably connected with a movable bearing plate (301), and a return spring is sleeved on the movable guide post (302). The movable bearing plate (301) is in the same horizontal plane as the supporting plate two (401) and the supporting plate one (201).

4. An internal steel chip removing device for a steel shell according to claim 3, characterized in that, Slide rails three are symmetrically arranged on the top surface of the movable bearing plate (301). The slide rail one (202), the slide rail two (402), and the slide rail three on the same side are linearly distributed and cooperate to form a long slide rail.

5. An internal steel chip removal device for a steel shell according to claim 1, characterized in that, The carrying component (600) includes a carrying bottom plate (601). A plurality of groups of sliders (602) are symmetrically arranged on both sides of the bottom of the carrying bottom plate (601), and a supporting plate (603) is connected to the top of the carrying bottom plate (601). A plurality of placing holes are arranged in a matrix on the top surface of the carrying bottom plate (601), and supporting holes are respectively arranged in the supporting plate (603) corresponding to the positions of the placing holes.

6. The internal steel chip removal device for a steel shell according to claim 2, characterized in that, The magnetic adsorption component (500) includes a mounting flat plate (501). The mounting flat plate (501) is slidably arranged on the table board (103). Two groups of cylinders one (504) are arranged on the bottom surface of the table board (103), and the telescopic rods of the two groups of cylinders one (504) penetrate through the table board (103) and are connected with the mounting flat plate (501). A plurality of groups of fixed platforms (502) are arranged in a matrix on the top of the mounting flat plate (501), and a race steel pipe (503) is connected to each group of fixed platforms (502). A plurality of guide rods (505) are provided on the bottom surface of the installation flat plate (501). A fixing plate (506) is connected in cooperation with the plurality of guide rods (505). Magnet bars (507) are arranged in a matrix on the top of the fixing plate (506). The magnet bars (507) are adapted to the race steel pipe (503). A second cylinder (508) is arranged in the cleaning platform (100). The telescopic rod of the second cylinder (508) is connected to the bottom surface of the fixing plate (506).

7. An internal steel chip removing device for a steel shell according to claim 6, characterized in that, A helically wound gathering groove (5031) is formed on the outer shaft surface of the race steel pipe (503).

8. An internal steel chip removing device for a steel shell according to claim 3, characterized in that, The adsorption assembly (700) includes a plurality of fixed guide columns (709) arranged on the table board (103). The plurality of fixed guide columns (709) penetrate through the same-side movable bearing plate (301) and are sleeved with a movable plate (701). A plurality of mounting seats (704) are arranged at the bottom of the movable plate (701). A plurality of docking heads (705) are arranged at equal intervals in the plurality of mounting seats (704). A driving cylinder (708) is arranged on the table board (103). The telescopic rod of the driving cylinder (708) penetrates through the movable bearing plate (301) and is connected to the movable plate (701).

9. An internal steel chip removal device for a steel shell according to claim 8, characterized in that, An adsorption port (706) is formed in the middle of the docking head (705). The adsorption port (706) penetrates through the docking head (705). A plurality of the docking heads (705) are connected in cooperation with a main pipe (707). The other ends of the plurality of main pipes (707) are connected to an external dust removal and adsorption device through the movable plate (701) in cooperation.

10. A method for using an internal steel chip removal device of a steel shell, characterized in that, Using an internal steel chip removing device for a steel shell according to any one of claims 1-9, comprising the following steps: Step 1, feeding: The battery steel shells (800) processed through conventional auxiliary processes such as air gun blowing or non-woven fabric wiping are sequentially placed on the bearing assembly (600). Step 2, cleaning the battery steel shell (800): Move the bearing assembly (600) on which the battery steel shell (800) is placed to directly below the adsorption assembly (700) for preliminary positioning. Then, synchronously start the driving cylinders (708) on both sides to drive the movable plate (701) to move downward for precise positioning. And the movable plate (701) drives the limiting rod (703) and the docking head (705) to move downward. The limiting rod (703) abuts against the movable platform (300), and the docking head (705) abuts against the bearing assembly (600) and moves downward smoothly. The downward movement of the bearing assembly (600) drives the battery steel shell (800) to move downward to a set position, so that the battery steel shell (800) is sleeved on the race steel pipe (503). The magnet bars (507) generate magnetic force to adsorb the residual steel chips deep in the inner cavity of the battery steel shell (800). Step 3, discharging: After the inner cavity of the battery steel shell (800) is fully adsorbed, start the driving cylinder (708) to drive the movable plate (701) to move upward, release the bearing assembly (600), and move the bearing assembly (600) carrying the magnetically adsorbed battery steel shell (800) to the discharging platform (400) for discharging. Step 4. Cleaning of the steel pipe (503): After the carrying component (600) is removed, start the driving cylinder (708), drive the movable plate (701) to move downward again until it reaches the set position. Then, synchronously start cylinder 1 (504) and cylinder 2 (508) to drive the steel pipe (503) adsorbed with steel chips to move upward by a set distance and insert it into the adsorption port (706) of the docking head (705). Start the external dust removal and adsorption equipment to generate suction force. Synchronously start cylinder 2 (508) to drive the fixed plate (506) to move downward. The fixed plate (506) drives the magnetic rod (507) to move out of the steel pipe (503), weakening the adsorption force on the steel chips gathered in the gathering groove (5031), and being sucked out by the external dust removal and adsorption equipment; After the suction, the magnetic adsorption component (500) and the adsorption component (700) are reset, and repeat Steps 1 to 4 to process the next batch of battery steel shells (800).

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