An automatic hole-opening device for the aluminum alloy shell of a lithium battery

Abstract

The present invention relates to the technical field of battery housing processing, and specifically to an automatic hole-opening device for an aluminum alloy housing of a lithium battery. It includes a support frame, a collection drawer for collecting punching waste is slidably connected to the front side of the support frame, a punching mechanism is arranged on the upper side of the support frame, and the hole-opening device further includes an auxiliary mechanism. By setting the punching mechanism in cooperation with the auxiliary mechanism, the housing can be adjusted in position and limited before punching, so that the housing is punched in a stable and accurate position state. Moreover, the method of simultaneously opening four holes is adopted, which improves the efficiency of punching the housing, simplifies the punching steps, and ensures the punching quality and consistency of multiple holes on a single housing, as well as the consistency of punching for a batch of housings.

Description

Technical Field

[0001] The present invention relates to the technical field of battery housing processing, and particularly to an automatic hole-opening device for an aluminum alloy housing of a lithium battery. Background Art

[0002] The aluminum alloy housing of a lithium battery is a battery housing made of aluminum alloy material, mainly applied to square lithium batteries. The aluminum alloy housing has advantages such as light weight and good heat dissipation effect. In order to facilitate the installation and fixation of the aluminum alloy housing, a plurality of installation holes need to be opened on the aluminum alloy housing through a punching process.

[0003] When punching the aluminum alloy housing adapted to a square lithium battery, the aluminum alloy housing of the square lithium battery not only sleevs the housing part of the lithium battery, but also has two side edges convenient for fixed connection on the housing, and then two installation holes are respectively punched on the two side edges.

[0004] The punching process of the aluminum alloy housing is usually rough machining. After punching, there will be some burrs and unevenness at the edge of the hole-opening position, which may affect the subsequent fixed installation of the housing and is also likely to affect the operation safety of subsequent installers. Usually, a punching head is used to perform the punching operation. When stamping and forming the four installation holes on the aluminum alloy housing, the position of the aluminum alloy housing needs to be adjusted multiple times. As a result, the overall punching efficiency is reduced, the punching operation is difficult to be carried out continuously and efficiently, and position deviation is also likely to occur, affecting the accuracy of the final punching position. Summary of the Invention

[0005] Therefore, the present invention provides an automatic hole-opening device for an aluminum alloy housing of a lithium battery, which solves the above technical problems.

[0006] An automatic hole-opening device for an aluminum alloy housing of a lithium battery provided by the present invention includes a support frame. An intermittent belt conveyor is arranged inside the support frame. A punching mechanism is arranged on the upper side of the support frame. The hole-opening device further includes an auxiliary mechanism for supporting and limiting the front and rear positions of the housing. The auxiliary mechanism is arranged on the support frame and is located below the punching mechanism.

[0007] The auxiliary mechanism includes two symmetrically arranged front and rear support plates fixedly connected to the inside of the support frame. A polishing belt is arranged on the upper surface of the support plate.

[0008] The punching mechanism includes a pushing member arranged at the top end inside the support frame. A limiting member for adjusting and limiting the left and right positions of the housing is arranged below the pushing member. A punching member is arranged at the position corresponding to the limiting member below the pushing member.

[0009] The punching member includes four punching heads fixedly connected to the lower side of the pushing member and distributed in a rectangle. Two symmetric displacement chutes are arranged on the outer circumferential surface of the punching head, and a polishing ring is slidably connected to the two displacement chutes through two connecting sliding columns.

[0010] According to an embodiment of the present invention, the polishing ring is coaxial with the punching head. A groove is provided at the bottom end of the punching head, and the edge of the groove is chamfered. A receiving cavity is provided on the inner wall of the top end of the groove. A discharge rod is slidably connected up and down to the bottom end of the pushing member, and the discharge rod is slidably connected up and down to the receiving cavity. A connecting spring is arranged between the top end of the discharge rod and the inner wall of the top end of the receiving cavity.

[0011] According to an embodiment of the present invention, the pushing member includes a rectangular connecting frame fixedly connected to the inner side of the top end of the support frame. Two symmetric hydraulic cylinders are fixedly connected to the upper surface of the rectangular connecting frame. The telescopic end of the hydraulic cylinder penetrates through the lower surface of the rectangular connecting frame and is fixedly connected to a linkage plate. First limiting sliding rods are fixedly connected to the left and right sides of the upper surface of the linkage plate. The top ends of the first limiting sliding rods slide through the upper surface of the rectangular connecting frame and are connected with a return spring between the upper surface of the rectangular connecting frame. The return spring is sleeved outside the corresponding first limiting sliding rod. The two linkage plates respectively correspond to two of the four punching heads distributed in a rectangle and arranged left and right. The lower surface of the linkage plate is fixedly connected to the upper surface of the punching head.

[0012] According to an embodiment of the present invention, the limiting member includes installation chutes respectively provided at the left and right ends of the lower surface of the linkage plate. A limiting block is slidably connected in the installation chute along the left and right directions. Second limiting sliding rods are fixedly connected to the lower surface of the linkage plate and corresponding to the positions of the installation chutes. The four limiting blocks are in one-to-one correspondence with the four second limiting sliding rods and are slidably connected along the left and right directions. An elastic telescopic connecting rod is fixedly connected between the second limiting sliding rod and its corresponding limiting block. Adjusting columns are fixedly connected to the opposite surfaces of the two limiting blocks distributed front and back. Two auxiliary belts rotating along the up and down direction are embedded in the opposite surfaces of the two limiting blocks distributed left and right. The two punching heads corresponding to the same linkage plate are located between the two limiting blocks.

[0013] According to an embodiment of the present invention, two groups of left and right symmetric adjusting plates are fixedly connected to the lower side of the pushing member. The number of the adjusting plates in each group is two and they are symmetric front and back. An X-shaped stabilizing frame is fixedly connected between the opposite surfaces of the two symmetric adjusting plates distributed front and back. A connecting chute extending along the up and down direction is provided on the adjusting plate. An arc-shaped protrusion and an arc-shaped groove are respectively arranged on the two vertical surfaces of the connecting chute. The four adjusting columns are in one-to-one correspondence with the four connecting chutes and are slidably connected.

[0014] According to an embodiment of the present invention, the left and right side surfaces of the bottom end of the limiting block are both inclined surfaces, two auxiliary belts on the limiting block are respectively arranged on the vertical surface and the inclined surface of the limiting block, and the sizes of the auxiliary belts on the vertical surface and the inclined surface are different.

[0015] According to an embodiment of the present invention, two symmetrically arranged rectangular auxiliary through holes are formed on the right side of the upper surface of the support plate. Two symmetrically arranged circular blanking through holes are formed on the upper surface of the support plate and between the two rectangular auxiliary through holes. Blanking channels are fixedly connected to the positions corresponding to the circular blanking through holes on the lower surface of the support plate, and the punching head is in clearance fit with the circular blanking through hole.

[0016] According to an embodiment of the present invention, the right ends of the two support plates are both inclined, and the right ends of the two support plates together form an outwardly expanding horn-shaped structure.

[0017] According to an embodiment of the present invention, a plurality of limiting strips are evenly distributed on the belt surface of the intermittent belt conveyor, and the intermittent belt conveyor is directly below the area between the two support plates.

[0018] According to an embodiment of the present invention, the blanking channel is arranged to penetrate up and down, and a collection drawer for collecting the punching waste falling from the blanking channel is slidably connected to the middle of the support frame.

[0019] Applying the technical solution of the present invention: 1. Through the setting of the punching mechanism and the auxiliary mechanism, the present invention can adjust and limit the position of the outer shell before punching, so that the outer shell is punched in a stable and accurate position state. And by using the method of simultaneously punching four holes, the efficiency of punching the outer shell is improved, the punching steps are simplified, and at the same time, the punching quality and consistency of multiple holes on a single outer shell, as well as the consistency of punching of batch outer shells, are ensured.

[0020] 2. In the present invention, during the process of the grinding ring continuing to move down after the punching of the punching part is completed, it will rotate and polish the upper surface of the punching position. After the upper surface polishing is completed, the intermittent belt conveyor and the grinding belt cooperate to polish the lower surface of the punching position of the outer shell during the process of conveying the outer shell, ensuring the smoothness of the edge of the opening position, so as to facilitate the subsequent high-quality installation of the outer shell and the operation safety of the installation personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0022] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0023] Figure 2 It is a three-dimensional structure schematic diagram of the fixed frame of the present invention.

[0024] Figure 3 It is a three-dimensional structure schematic diagram of the conveying unit of the present invention.

[0025] Figure 4 It is a structure schematic diagram of the aluminum alloy shell of the lithium battery before and after punching.

[0026] Figure 5 It is a three-dimensional structure schematic diagram of the auxiliary mechanism of the present invention.

[0027] Figure 6 It is a three-dimensional structure schematic diagram of the punching mechanism of the present invention.

[0028] Figure 7 It is Figure 6 an enlarged view of part A in

[0029] Figure 8 It is a three-dimensional structure schematic diagram of the first perspective of the limiting member of the present invention.

[0030] Figure 9 It is a three-dimensional structure schematic diagram of the second perspective of the limiting member of the present invention.

[0031] Figure 10 It is a three-dimensional structure schematic diagram of the punching mechanism of the present invention.

[0032] Figure 11 It is Figure 10 a partial cross-sectional view of

[0033] Figure 12 It is a process schematic diagram of the punching mechanism of the present invention punching the aluminum alloy shell of the lithium battery.

[0034] Reference numerals: 1, support frame; 2, intermittent belt conveyor; 3, auxiliary mechanism; 4, punching mechanism; 5, collection drawer; 31, support plate; 32, rectangular auxiliary through hole; 33, blanking channel; 34, circular blanking through hole; 35, polishing belt; 41, pushing member; 42, X-shaped stabilizing frame; 43, adjusting plate; 44, limiting member; 45, punching member; 411, hydraulic telescopic cylinder; 412, first limiting slide bar; 413, rectangular connecting frame; 414, linkage plate; 441, installation chute; 442, second limiting slide bar; 443, elastic telescopic connecting rod; 444, adjusting column; 445, limiting block; 446, auxiliary belt; 451, punching head; 452, connecting slide column; 453, polishing ring; 454, displacement chute; 455, discharge rod. Detailed implementation manners

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an automatic hole punching device for an aluminum alloy shell of a lithium battery comprises a support frame 1, an intermittent belt conveyor 2 is arranged on the inner side of the support frame 1, a collecting bin 5 for collecting punching waste is slidably connected to the middle of the support frame 1, and a punching mechanism 4 is arranged on the upper side of the support frame 1; the hole punching device also comprises an auxiliary mechanism 3 for supporting the aluminum alloy shell of a lithium battery for punching, and the auxiliary mechanism 3 is arranged on the support frame 1 and below the punching mechanism 4.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, the auxiliary mechanism 3 includes two front-to-back symmetrical support plates 31 fixedly connected to the inner side of the support frame 1, two left-right symmetrical rectangular auxiliary through holes 32 are opened on the right side of the upper surface of the support plate 31, and two left-right symmetrical circular feed through holes 34 are opened on the upper surface of the support plate 31 and located between the two rectangular auxiliary through holes 32. Feeding channels 33 are fixedly connected at the positions of the circular feed through holes 34 on the lower surface of the support plate 31, and a grinding belt 35 that rotates along the left and right directions is embedded on the left side of the upper surface of the support plate 31.

[0038] like Figure 1 and Figure 5 As shown, the right ends of the two support plates 31 are inclined, and the right ends of the two support plates 31 together form an outward-flashing trumpet-shaped structure. Drive motors are provided on the opposite back surfaces of the two support plates 31, and the drive motors are connected to the grinding belt 35 through a gear set (not shown in the figure). A plurality of limit strips are evenly distributed on the belt surface of the intermittent belt conveyor 2. The intermittent belt conveyor 2 is located directly below the area between the two support plates 31. The unloading channel 33 is arranged to be through-connected from top to bottom, and the four unloading channels 33 are all located directly above the collecting drawer 5.

[0039] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown in the figure, the punching mechanism 4 includes a pushing member 41 disposed at the inner top end of the support frame 1. A limiting member 44 is provided below the pushing member 41. A punching member 45 is provided at a position corresponding to the limiting member 44 below the pushing member 41. Two sets of left-right symmetric adjusting plates 43 are fixedly connected to the lower side of the pushing member 41. The number of adjusting plates 43 in each group is two and they are symmetrically arranged front and back. An X-shaped stabilizing frame 42 is fixedly connected between the opposite surfaces of the two front-and-back symmetric adjusting plates 43.

[0040] During specific use, first, the intermittent belt conveyor 2 intermittently conveys the shell to be punched to the left. The shell enters between the two support plates 31. The front and back positions of the shell are centered by the inclined right ends of the two support plates 31. The shell is limited and guided by the two support plates 31. When the shell moves to directly below the pushing member 41, at this time, the intermittent belt conveyor 2 stops conveying. The pushing member 41 pushes the limiting member 44 and the punching member 45 to move downward synchronously. First, the left and right positions of the shell are adjusted and limited by the limiting member 44. Then, as the punching member 45 continues to move downward, four holes are simultaneously punched on the side of the shell. And during the process of opening holes in the shell, the punching member 45 can also perform immediate grinding treatment on the upper surface of the opening position. When the punching is completed, the pushing member 41 drives the punching member 45 and the limiting member 44 to move upward. The limiting member 44 cancels the limitation on the shell. At this time, the intermittent belt conveyor 2 conveys the shell with holes punched to the left continuously. When the shell after punching passes through the grinding belt 35, the lower surface of the punching position of the shell is ground by the grinding belt 35. When the next shell to be punched moves to directly below the pushing member 41 again, the above steps are repeated to punch the shells in batches.

[0041] As Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 11 and Figure 12 As shown in the figure, the pushing member 41 includes a rectangular connection frame 413 fixedly connected to the inner top end of the support frame 1. A plurality of adjusting plates 43 are respectively fixedly connected to the four corner positions of the lower surface of the rectangular connection frame 413. Two front-and-back symmetric hydraulic telescopic cylinders 411 are fixedly connected to the upper surface of the rectangular connection frame 413. The telescopic ends of the hydraulic telescopic cylinders 411 penetrate through the lower surface of the rectangular connection frame 413 and are fixedly connected to a linkage plate 414. First limiting slide bars 412 are fixedly connected to both the left and right sides of the upper surface of the linkage plate 414. The top ends of the first limiting slide bars 412 slide through the upper surface of the rectangular connection frame 413 and a return spring is connected between the top ends and the upper surface of the rectangular connection frame 413. The return spring is sleeved outside the corresponding first limiting slide bar 412.

[0042] During specific use, the hydraulic telescopic cylinder 411 extends to push the linkage plate 414 downward. The linkage plate 414 drives the limiting member 44 and the punching member 45 to move downward synchronously. Through the arrangement of the first limiting slide bar 412, the vertical downward movement of the linkage plate 414 is limited and guided. At the same time, through the arrangement of the return spring, the downward punching of the punching member 45 is buffered.

[0043] As Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 12 shown, the limiting member 44 includes mounting chutes 441 respectively opened at the left and right ends of the lower surface of the linkage plate 414. A limiting block 445 is slidably connected in the mounting chute 441 in the left-right direction. Second limiting slide bars 442 are fixedly connected to the lower surface of the linkage plate 414 at positions corresponding to the mounting chutes 441. The four limiting blocks 445 correspond to the four second limiting slide bars 442 one by one and are slidably connected in the left-right direction. Elastic telescopic connecting rods 443 are fixedly connected between the second limiting slide bars 442 and their corresponding limiting blocks 445. Adjusting columns 444 are fixedly connected to the opposite surfaces of the two limiting blocks 445 distributed front and back. Two auxiliary belts 446 that rotate in the up-down direction are embedded in the opposite surfaces of the two limiting blocks 445 distributed left and right.

[0044] As Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 11 and Figure 12 shown, a connecting chute extending in the up-down direction is opened on the adjusting plate 43. Corresponding arc-shaped protrusions and arc-shaped grooves are respectively arranged on the two vertical surfaces of the connecting chute. The four adjusting columns 444 correspond to the four connecting chutes one by one and are slidably connected. The left and right side surfaces at the bottom end of the limiting block 445 are beveled. The two auxiliary belts 446 on the limiting block 445 are respectively arranged on the vertical surface and the inclined surface of the limiting block 445, and the auxiliary belts 446 on the vertical surface and the auxiliary belts 446 on the inclined surface have different sizes.

[0045] During specific use, when the linkage plate 414 moves downward, the limiting block 445 moves downward synchronously with the linkage plate 414. During the synchronous downward movement of the two limiting blocks 445 distributed left and right, the position of the outer shell is adjusted and limited in the left-right direction by using the inclined surface. And during the process of the limiting block 445 moving downward to limit the outer shell, the auxiliary belt 446 on its inclined surface can reduce the friction between the limiting block 445 and the outer shell, improving the smoothness of position adjustment and limitation.

[0046] As the limiting block 445 continues to move downward, the limiting block 445 passes through the interior of the rectangular auxiliary through-hole 32. At the same time, as the adjusting column 444 moves downward along with the limiting block 445, when the adjusting column 444 passes by the arc-shaped protrusion inside the connecting chute, the arc-shaped protrusion pushes the adjusting column 444 to move away from the housing (as Figure 12 shown), the adjusting column 444 drives the limiting block 445 to slide inside the installation chute 441, and compresses the elastic telescopic connecting rod 443. At the same time, while the limiting block 445 slides inside the installation chute 441, it also slides on the second limiting slide rod 442, enabling the limiting block 445 to maintain a stable horizontal slide. At this time, the connection position between the inclined surface and the vertical surface of the limiting block 445 passes by the housing, causing the connection position between the inclined surface and the vertical surface of the limiting block 445 to move away from the housing, avoiding damage to the edge of the housing caused by sliding against the housing. When the adjusting column 444 continues to move downward away from the arc-shaped protrusion on the connecting chute, under the action of the self-elastic force of the elastic telescopic connecting rod 443, it drives the adjusting column 444 to reattach to the vertical surface of the connecting chute. At this time, the vertical surface of the limiting block 445 cooperates with the corresponding auxiliary belt 446 to reattach to the housing and slide downward, and limits the housing in the left-right direction.

[0047] As Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 shown, the punching part 45 includes a punching head 451 fixedly connected to the lower surface of the linkage plate 414. The punching head 451 has a clearance fit with the circular blanking through-hole 34. The two punching heads 451 corresponding to the same linkage plate 414 are located between the two limiting blocks 445. Two displacement chutes 454 symmetrically arranged about the axis of the punching head 451 are provided on the outer circumferential surface of the punching head 451. A connecting slide column 452 is slidably connected inside the displacement chute 454. The ends of the two connecting slide columns 452 far from the punching head 451 are commonly fixedly connected with a polishing ring 453. The polishing ring 453 is coaxial with the punching head 451. A discharge rod 455 is slidably connected to the bottom end of the punching head 451 in the up-and-down direction. A ball (not shown in the figure) is provided at the connection position between the connecting slide column 452 and the displacement chute 454 to reduce the friction between the connecting slide column 452 and the displacement chute 454. The polishing ring 453 rotates while sliding up and down along the punching head 451. A groove is provided at the bottom end of the punching head 451, and the edge of the groove is chamfered. A receiving cavity is provided on the inner wall at the top of the groove. The discharge rod 455 is slidably connected to the receiving cavity in the up-and-down direction. A connecting spring is provided between the top end of the discharge rod 455 and the inner wall at the top of the receiving cavity. The four rectangular auxiliary through-holes 32 correspond to the four rectangularly distributed limiting blocks 445 one by one, and the four circular blanking through-holes 34 correspond to the four rectangularly distributed punching heads 451 one by one.

[0048] As Figure 11 shown, it should be noted that by opening a groove at the bottom end of the punching head 451 and chamfering the edge of the groove, it is beneficial to reduce the radial force on the side of the housing (the housing and the side are made of thin plates) when the punching head 451 punches the housing, reducing the risk of deformation of the side of the housing. Secondly, due to the setting of the groove, in order to prevent the waste generated by punching from accumulating inside the groove, a discharge rod 455 and a connecting spring are arranged inside the groove to achieve automatic discharging.

[0049] As Figures 1 - 12 shown, during specific use, as the linkage plate 414 continuously moves downward, the punching head 451 gradually approaches the housing. At this time, the limiting block 445 completes the limitation of the housing. As the punching head 451 continues to move downward, the punching head 451 starts to punch the housing. The punching head 451 punches the housing through the groove at its bottom end. During the punching process, the discharge rod 455 moves toward the inside of the accommodation cavity under the blockage of the housing, and at the same time compresses the connecting spring. When the punching head 451 penetrates to the lower surface of the housing to complete punching, at this time the discharge rod 455 is no longer blocked by the housing, and the discharge rod 455 moves downward under the resilience of the connecting spring, and pushes out the waste in the bottom groove of the punching head 451, preventing the waste generated by punching from getting stuck in the bottom groove of the punching head 451 and affecting subsequent punching operations.

[0050] After punching is completed, the punching head 451 continues to move downward. After the lower surface of the grinding ring 453 fits against the upper surface of the housing, blocked by the housing, the grinding ring 453 does not move downward with the punching head 451. During the process of the punching head 451 moving downward relative to the grinding ring 453, by sliding the connecting slide column 452 inside the displacement chute 454, the grinding ring 453 rotates in a state of fitting against the upper surface of the punching position of the housing, using the rotating grinding ring 453 to grind the burrs on the upper surface of the punching position. At the same time, the waste generated by punching falls through the feeding channel 33 and is conveyed to the inside of the collection drawer 5 for unified collection and processing.

[0051] After the grinding ring 453 finishes grinding, the pushing member 41 drives the punching head 451 and the limiting block 445 to move upward, and the limiting block 445 cancels the limitation of the housing. At this time, the intermittent belt conveyor 2 continues to convey the punched housing to the left. When the punched housing passes through the grinding belt 35, the lower surface of the punching position of the housing is ground by the grinding belt 35. When the next housing to be punched moves back under the pushing member 41, the above steps are repeated to perform punching operations on the housing.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and 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, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0054] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; 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 internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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.

[0055] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. An automatic hole-opening device for the aluminum alloy shell of a lithium battery, characterized in that: It includes a support frame, an intermittent belt conveyor is arranged inside the support frame, and a punching mechanism is arranged on the upper side of the support frame; An auxiliary mechanism for supporting and limiting the front and rear positions of the outer shell, the auxiliary mechanism is arranged on the support frame and is located below the punching mechanism; The auxiliary mechanism includes two symmetric front and rear support plates fixedly connected to the inner side of the support frame, and a grinding belt is arranged on the upper surface of the support plate; The punching mechanism includes a pushing member arranged at the inner top end of the support frame, a limiting member for adjusting and limiting the left and right positions of the outer shell is arranged below the pushing member, and a punching member is arranged at the position corresponding to the limiting member below the pushing member; The punching member includes four punching heads fixedly connected to the lower side of the pushing member and distributed in a rectangle, and two symmetric displacement chutes are arranged on the outer circumferential surface of the punching head. A grinding ring is slidably connected to the two displacement chutes through two connecting sliding columns; The pushing member includes a linkage plate; The limiting member includes installation chutes opened at both the left and right ends of the lower surface of the linkage plate. A limiting block is slidably connected to the inside of the installation chute in the left and right directions. Second limiting slide rods are fixedly connected to the lower surface of the linkage plate and corresponding to the installation chutes. The four limiting blocks correspond to the four second limiting slide rods and are slidably connected in the left and right directions. An elastic telescopic connecting rod is fixedly connected between the second limiting slide rod and its corresponding limiting block. Adjusting columns are fixedly connected to the opposite surfaces of the two front and rear distributed limiting blocks. Two auxiliary belts rotating in the up and down direction are embedded in the opposite surfaces of the two left and right distributed limiting blocks. The two punching heads corresponding to the same linkage plate are located between the two limiting blocks; Two groups of left and right symmetric adjusting plates are fixedly connected to the lower side of the pushing member. A connecting chute extending in the up and down direction is opened on the adjusting plate. Corresponding arc-shaped protrusions and arc-shaped grooves are respectively arranged on the two vertical surfaces of the connecting chute. The adjusting column is slidably connected to the connecting chute; After the punching member completes the synchronous punching of the four installation holes and continues to move down, it will cause the grinding ring to rotate and polish the upper surface of the installation hole. After the polishing is completed, during the rightward movement of the outer shell driven by the intermittent belt conveyor, the lower surface of the installation hole is polished by the grinding belt.

2. The automatic hole-opening device for the aluminum alloy shell of a lithium battery according to claim 1, characterized in that: The grinding ring is coaxial with the punching head. A groove is arranged at the bottom end of the punching head, and the edge of the groove is chamfered. A receiving cavity is opened on the inner wall of the top end of the groove. A discharge rod is slidably connected to the bottom end of the pushing member up and down, and the discharge rod is slidably connected to the receiving cavity up and down. A connecting spring is arranged between the top end of the discharge rod and the inner wall of the top end of the receiving cavity.

3. An automatic hole-opening device for an aluminum alloy shell of a lithium battery according to claim 1, characterized in that: The driving member includes a rectangular connection frame fixedly connected to the inner side of the top end of the support frame. Two symmetrically arranged hydraulic telescopic cylinders are fixedly connected to the upper surface of the rectangular connection frame. The telescopic end of the hydraulic telescopic cylinder penetrates through the lower surface of the rectangular connection frame and is fixedly connected to a linkage plate. On the left and right sides of the upper surface of the linkage plate, a first limiting slide bar is fixedly connected respectively. The top end of the first limiting slide bar slidably penetrates through the upper surface of the rectangular connection frame, and a return spring is connected between the top end of the first limiting slide bar and the upper surface of the rectangular connection frame. The return spring is sleeved on the outer side of the corresponding first limiting slide bar. The two linkage plates respectively correspond to two of the four punching heads arranged left and right in a rectangular distribution. The lower surface of the linkage plate is fixedly connected to the upper surface of the punching head.

4. An automatic hole-opening device for an aluminum alloy shell of a lithium battery according to claim 1, characterized in that: The number of the adjusting plates in each group is two and they are symmetrically arranged front and back. An X-shaped stabilizing frame is fixedly connected between the opposite surfaces of the two symmetrically arranged adjusting plates front and back. The four adjusting columns correspond to the four connecting chutes one by one.

5. An automatic hole-opening device for an aluminum alloy shell of a lithium battery according to claim 1, characterized in that: The left and right side surfaces of the bottom end of the limiting block are both inclined. The two auxiliary belts on the limiting block are respectively arranged on the vertical surface and the inclined surface of the limiting block, and the sizes of the auxiliary belt on the vertical surface and the auxiliary belt on the inclined surface are different.

6. The automatic hole-opening device for the aluminum alloy shell of a lithium battery according to claim 1, wherein: On the upper surface of the support plate, two symmetrically arranged rectangular auxiliary through holes are opened on the right side. On the upper surface of the support plate and between the two rectangular auxiliary through holes, two symmetrically arranged circular blanking through holes are opened. At the positions corresponding to the circular blanking through holes on the lower surface of the support plate, blanking channels are fixedly connected respectively. The punching head and the circular blanking through hole are in clearance fit.

7. An automatic hole-opening device for an aluminum alloy shell of a lithium battery according to claim 6, characterized in that: The right ends of the two support plates are both inclined, and the right ends of the two support plates together form a flared structure that expands outward.

8. An automatic hole-opening device for an aluminum alloy shell of a lithium battery according to claim 6, characterized in that: A plurality of limiting strips are evenly distributed on the belt surface of the intermittent belt conveyor. The intermittent belt conveyor is located directly below the area between the two support plates.

9. The automatic hole-opening device for the aluminum alloy shell of a lithium battery according to claim 6, characterized in that: The blanking channel is arranged to penetrate through up and down. A collection drawer for collecting the punching waste falling from the blanking channel is slidably connected to the middle of the support frame.

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