Automatic trepanning device for aluminum alloy shell of lithium battery

Abstract

The invention relates to the technical field of battery shell processing, in particular to a lithium battery aluminum alloy shell automatic trepanning device which comprises a supporting frame, the front side of the supporting frame is slidably connected with a collecting drawer for collecting punching waste, a punching mechanism is arranged on the upper side of the supporting frame, and the trepanning device further comprises an auxiliary mechanism. The punching mechanism is matched with the auxiliary mechanism, so that the shell can be subjected to position adjustment and limiting before being punched, the shell is punched in a stable and accurate position state, the mode that four hole positions are punched at the same time is adopted, the shell punching efficiency is improved, the punching step is simplified, and meanwhile the punching efficiency is improved. And the punching quality and consistency of multiple holes in a single shell and the punching consistency of shells in batches are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of battery shell processing, in particular to an automatic hole-making device for an aluminum alloy shell of a lithium battery. Background Art

[0002] Lithium battery aluminum alloy shell is a battery shell made of aluminum alloy material, mainly used for square lithium batteries. Aluminum alloy shell has the advantages of light weight and good heat dissipation. In order to facilitate the installation and fixation of the aluminum alloy shell, it is necessary to open multiple mounting holes on the aluminum alloy shell through a punching process.

[0003] When punching the aluminum alloy shell suitable for the square lithium battery, the aluminum alloy shell of the square lithium battery is not only sleeved on the shell part of the lithium battery, but also has two sides on the shell for convenient fixed connection, and then two mounting holes are punched on the two sides respectively.

[0004] The punching process of the aluminum alloy shell is usually rough processing. After the punching is completed, there will be some burrs and unevenness on the edge of the opening position, which may affect the subsequent fixed installation of the shell, and also easily affect the operational safety of the subsequent installers; usually a punching head is used to perform the punching operation. When the four mounting holes on the aluminum alloy shell are stamped and formed, the position of the aluminum alloy shell needs to be adjusted many times. As a result, the overall punching efficiency is reduced, and the punching operation is difficult to be carried out efficiently and continuously. At the same time, position deviation is prone to occur, which affects 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 shell of a lithium battery, which solves the above technical problems.

[0006] The present invention provides an automatic hole-punching device for an aluminum alloy shell of a lithium battery, comprising a support frame, an intermittent belt conveyor is arranged on the inner side of the support frame, a punching mechanism is arranged on the upper side of the support frame, and the hole-punching device also includes an auxiliary mechanism for supporting and limiting the front and rear positions of the shell, and the auxiliary mechanism is arranged on the support frame and located below the punching mechanism.

[0007] The auxiliary mechanism comprises two front-to-back symmetrical 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.

[0008] The punching mechanism includes a pushing member arranged at the top inner side of the support frame, a limiting member for adjusting and limiting the left and right positions of the housing is arranged at the lower side of the pushing member, and a punching member is arranged at the position of the limiting member at the lower side of the pushing member.

[0009] The punching member includes four punching heads in a rectangular distribution fixedly connected to the lower side of the push member, and two symmetrical displacement grooves are arranged on the outer circumferential surface of the punching head. The two displacement grooves are slidably connected with grinding rings through two connecting slide posts.

[0010] According to an embodiment of the present invention, the grinding 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, an accommodating cavity is opened on the inner wall at the top end of the groove, the bottom end of the pushing member is slidably connected to a discharge rod, the discharge rod is slidably connected to the accommodating cavity, and a connecting spring is provided between the top end of the discharge rod and the inner wall at the top end of the accommodating 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 supporting frame, and the upper surface of the rectangular connecting frame is fixedly connected to two front-to-rear symmetrical hydraulic telescopic cylinders, and the telescopic ends of the hydraulic telescopic cylinders pass through the lower surface of the rectangular connecting frame and are fixedly connected to a linkage plate, and the left and right sides of the upper surface of the linkage plate are fixedly connected to a first limit slide bar, and the top end of the first limit slide bar slides through the upper surface of the rectangular connecting frame and is connected to a return spring between the upper surface of the rectangular connecting frame, and the return spring is sleeved on the outer side of the corresponding first limit slide bar, and the two linkage plates respectively correspond to two left and right punching heads of four rectangularly distributed punching heads, and 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 limit member includes installation slide grooves provided at both ends of the left and right ends of the lower surface of the linkage plate, the interior of the installation slide grooves is slidably connected to the limit block in the left and right directions, the lower surface of the linkage plate and the positions corresponding to the installation slide grooves are fixedly connected with the second limit slide rods, the four limit blocks correspond to the four second limit slide rods one by one and are slidably connected in the left and right directions, an elastic telescopic connecting rod is fixedly connected between the second limit slide rods and their corresponding limit blocks, adjusting columns are fixedly connected to the opposite surfaces of the two limit blocks distributed front and back, two auxiliary belts that rotate in the up and down directions are embedded on the opposite surfaces of the two limit blocks distributed left and right, and the two punching heads corresponding to the same linkage plate are located between the two limit blocks.

[0013] According to an embodiment of the present invention, two groups of left-right symmetrical adjustment plates are fixedly connected to the lower side of the pushing member, the number of the adjustment plates in each group is two and they are symmetrical front to back, an X-shaped stabilizing frame is fixedly connected between the opposite surfaces of the two front-to-back symmetrical adjustment plates, the adjustment plates are provided with connecting slide grooves extending in the up and down directions, corresponding arc-shaped protrusions and arc-shaped grooves are respectively provided on the two vertical surfaces of the connecting slide grooves, and the four adjustment columns correspond to the four connecting slide grooves one by one 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 limit block are both inclined, and the two auxiliary belts on the limit block are respectively arranged on the vertical surface and the inclined surface of the limit block, and the auxiliary belts on the vertical surface and the auxiliary belts on the inclined surface have different sizes.

[0015] According to an embodiment of the present invention, two left-right symmetrical rectangular auxiliary through holes are opened on the right side of the upper surface of the support plate, and two left-right symmetrical circular blanking through holes are opened on the upper surface of the support plate and located between the two rectangular auxiliary through holes. The lower surface of the support plate is fixedly connected with a blanking channel at the positions corresponding to the circular blanking through holes, and the punching head and the circular blanking through hole are clearance-fitted.

[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 flared trumpet-shaped structure.

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

[0018] According to an embodiment of the present invention, the material discharge channel is vertically through-set, and a collecting drawer for collecting punching waste falling from the material discharge channel is slidably connected to the middle of the support frame.

[0019] Technical solution of the present invention: 1. The present invention can adjust the position and limit the shell before punching through the setting of the punching mechanism and the auxiliary mechanism, so that the shell can be punched in a stable and accurate position state, and adopts a method of simultaneously opening four holes, which improves the efficiency of punching the shell, simplifies the punching steps, and ensures the punching quality and consistency of multiple holes on a single shell, as well as the consistency of punching of batches of shells.

[0020] 2. In the present invention, the grinding ring rotates and grinds the upper surface of the punching position as the punching part continues to move downward after the punching is completed. After the upper surface is polished, the intermittent belt conveyor cooperates with the grinding belt to polish the lower surface of the punching position of the shell during the process of conveying the shell, ensuring the smoothness of the edge of the opening position, so as to facilitate the subsequent high-quality installation of the shell and the safety of the installer's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

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

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

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

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

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

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

[0028] Figure 7 yes Figure 6 Enlarged view of part A.

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

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the limiting component of the present invention from a second viewing angle.

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

[0032] Fig.11 yes Fig.10 A partial cross-sectional view of .

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

[0034] 1. Support frame; 2. Intermittent belt conveyor; 3. Auxiliary mechanism; 4. Punching mechanism; 5. Collecting drawer; 31. Support plate; 32. Rectangular auxiliary through hole; 33. Unloading channel; 34. Circular unloading through hole; 35. Grinding belt; 41. Pusher; 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. Mounting slide; 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 bar; 453. Grinding ring; 454. Displacement slide; 455. Discharge rod. DETAILED DESCRIPTION

[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, the punching mechanism 4 includes a pushing member 41 arranged at the top inner side of the supporting frame 1, a limiting member 44 is arranged on the lower side of the pushing member 41, a punching member 45 is arranged at the position of the lower side of the pushing member 41 corresponding to the limiting member 44, and two groups of left-right symmetrical adjustment plates 43 are fixedly connected to the lower side of the pushing member 41. The number of the adjustment plates 43 in each group is two and they are symmetrical front to back, and an X-shaped stabilizing frame 42 is fixedly connected between the opposite surfaces of the two front-to-back symmetrical adjustment plates 43.

[0040] During specific use, the intermittent belt conveyor 2 first intermittently conveys the shell to be punched to the left, and the shell enters between the two support plates 31. The front and rear positions of the shell are adjusted to the center through the inclined right ends of the two support plates 31, and the shell is limited and guided by the two support plates 31. When the shell moves to the bottom of the pusher 41, the intermittent belt conveyor 2 stops conveying, and the pusher 41 pushes the limiter 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 limiter 44, and then as the punching member 45 continues to move downward, four holes are punched on the side of the shell. The punching operation is carried out at the same time, and the punching member 45 can also perform immediate grinding on the upper surface of the hole opening position during the process of drilling the hole in the shell. When the punching is completed, the pushing member 41 drives the punching member 45 and the limiting member 44 to move upward, and the limiting member 44 cancels the limit on the shell. At this time, the intermittent belt conveyor 2 continues to convey the punched shell to the left. When the punched shell passes through the grinding belt 35, the lower surface of the punching position of the shell is grinded by the grinding belt 35. After the next shell to be punched moves back to the bottom of the pushing member 41, the above steps are repeated to perform batch punching operations on the shell.

[0041] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.11 and Fig.12 As shown, the pushing member 41 includes a rectangular connecting frame 413 fixedly connected to the inner side of the top end of the supporting frame 1, and a plurality of adjusting plates 43 are respectively fixedly connected at the four corners of the lower surface of the rectangular connecting frame 413. The upper surface of the rectangular connecting frame 413 is fixedly connected with two front-to-rear symmetrical hydraulic telescopic cylinders 411. The telescopic ends of the hydraulic telescopic cylinders 411 penetrate through the lower surface of the rectangular connecting frame 413 and are fixedly connected with a linkage plate 414. The upper surface of the linkage plate 414 is fixedly connected with a first limiting slide bar 412 on both sides. The top end of the first limiting slide bar 412 slides through the upper surface of the rectangular connecting frame 413 and is connected to a reset spring between the upper surface of the rectangular connecting frame 413. The reset spring is sleeved on the outer side of the corresponding first limiting slide bar 412.

[0042] During specific use, the hydraulic telescopic cylinder 411 is extended to push the linkage plate 414 downward, and the linkage plate 414 will drive the limiting member 44 and the punching member 45 to move downward synchronously. The first limiting slide rod 412 is set to limit and guide the vertical downward movement of the linkage plate 414. At the same time, the reset spring is set to buffer the downward movement of the punching member 45.

[0043] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.12 As shown, the limit member 44 includes an installation slot 441 provided at both ends of the left and right sides of the lower surface of the linkage plate 414, the interior of the installation slot 441 is slidably connected to a limit block 445 along the left and right directions, the lower surface of the linkage plate 414 and the position corresponding to the installation slot 441 are fixedly connected with a second limit slide bar 442, the four limit blocks 445 correspond one to one with the four second limit slide bars 442 and are slidably connected along the left and right directions, an elastic telescopic connecting rod 443 is fixedly connected between the second limit slide bar 442 and its corresponding limit block 445, the opposite surfaces of the two limit blocks 445 distributed front and back are fixedly connected with an adjusting column 444, and the opposite surfaces of the two limit blocks 445 distributed left and right are embedded with two auxiliary belts 446 that rotate along the up and down directions.

[0044] like Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.11 and Fig.12 As shown, a connecting groove extending in the up-down direction is provided on the adjustment plate 43, and corresponding arc-shaped protrusions and arc-shaped grooves are respectively provided on the two vertical surfaces of the connecting groove, and four adjustment columns 444 correspond to the four connecting grooves one by one and are slidably connected, and the left and right side surfaces of the bottom end of the limit block 445 are both inclined surfaces, and the two auxiliary belts 446 on the limit block 445 are respectively provided on the vertical surface and the inclined surface of the limit block 445, and the auxiliary belt 446 on the vertical surface and the auxiliary belt 446 on the inclined surface have different sizes.

[0045] During specific use, when the linkage plate 414 moves downward, the limit block 445 moves downward synchronously with the linkage plate 414. During the process of the two limit blocks 445 distributed on the left and right moving downward synchronously, the inclined surface is used to adjust and limit the position of the outer shell in the left and right directions. In the process of the limit block 445 moving down to limit the outer shell, the auxiliary belt 446 on its inclined surface can reduce the friction between the limit block 445 and the outer shell, thereby improving the smoothness of position adjustment and limiting.

[0046] As the stop block 445 continues to move downward, the stop block 445 passes through the interior of the rectangular auxiliary through hole 32. At the same time, when the adjustment column 444 moves downward with the stop block 445, when the adjustment column 444 passes the arc-shaped protrusion on the inner side of the connecting slide groove, the arc-shaped protrusion pushes the adjustment column 444 to move away from the housing (such as Fig.12 The stopper 445 is then moved back and forth to move the stopper 446 so that the stopper 446 can move in a horizontal direction and slide downwardly, thereby preventing the stopper 445 from sliding downwardly and sliding downwardly.

[0047] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the punching member 45 includes a punching head 451 fixedly connected to the lower surface of the linkage plate 414, the punching head 451 and the circular blanking through hole 34 are clearance-matched, the two punching heads 451 corresponding to the same linkage plate 414 are located between the two limit blocks 445, and the outer circumferential surface of the punching head 451 is provided with two displacement slide grooves 454 symmetrical about the axis of the punching head 451, and the displacement slide groove 454 is internally slidably connected with a connecting slide column 452, and the ends of the two connecting slide columns 452 away from the punching head 451 are fixedly connected with a grinding ring 453, and the grinding ring 453 is coaxial with the punching head 451, and the bottom end of the punching head 451 is slidably connected with a discharge rod 455 up and down, and the connecting slide A ball bearing (not shown in the figure) is arranged at the position where the column 452 is connected to the displacement slide groove 454 to reduce the friction between the connecting slide column 452 and the displacement slide groove 454. The grinding ring 453 rotates while sliding up and down along the punching head 451. A groove is arranged at the bottom end of the punching head 451, and the edge of the groove is chamfered. An accommodating cavity is opened on the inner wall of the top end of the groove. The discharge rod 455 is connected to the accommodating cavity by sliding up and down. A connecting spring is arranged between the top end of the discharge rod 455 and the inner wall of the top end of the accommodating cavity. The four rectangular auxiliary through holes 32 correspond one-to-one to the four rectangularly distributed limit blocks 445, and the four circular feeding through holes 34 correspond one-to-one to the four rectangularly distributed punching heads 451.

[0048] like Fig.11 As shown, it should be noted that by opening a groove at the bottom of the punching head 451 and chamfering the edge of the groove, the punching head 451 is beneficial to reduce the radial force on the side of the shell (the shell and the side are thin plates as a whole) when punching the shell, thereby reducing the risk of deformation of the side of the shell. 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 provided inside the groove to realize automatic discharge.

[0049] like Figure 1-Figure 12 As shown, during specific use, as the linkage plate 414 continues to move downward, the punching head 451 gradually approaches the shell, and the limit block 445 completes the limiting of the shell. As the punching head 451 continues to move downward, the punching head 451 begins to punch the shell, and the punching head 451 punches the shell through the groove at its bottom end. During the punching process, the discharge rod 455 is blocked by the shell and moves toward the inside of the accommodating cavity, and at the same time compresses the connecting spring. When the punching head 451 penetrates the lower surface of the shell to complete the punching, the discharge rod 455 is no longer blocked by the shell. The discharge rod 455 moves downward under the action of the rebound force of the connecting spring, and pushes out the waste material in the groove at the bottom of the punching head 451, so as to avoid the waste material generated by the punching from being stuck in the groove at the bottom of the punching head 451 and affecting the subsequent punching operation.

[0050] After punching is completed, the punching head 451 continues to move downward. After the lower surface of the grinding ring 453 is in contact with the upper surface of the shell, it is blocked by the shell and the grinding ring 453 does not move downward with the punching head 451. During the downward movement of the punching head 451 relative to the grinding ring 453, the connecting slide column 452 slides inside the displacement slide groove 454, so that the grinding ring 453 rotates while in contact with the upper surface of the punching position of the shell. The rotating grinding ring 453 is used to grind the burrs on the upper surface of the punching position. At the same time, the waste generated by the punching falls through the discharge channel 33 and is transported to the inside of the collecting bin 5 for unified collection and treatment.

[0051] After the grinding ring 453 completes grinding, the pushing member 41 drives the punching head 451 and the limit block 445 to move upward, and the limit block 445 cancels the limit on the shell. At this time, the intermittent belt conveyor 2 continues to convey the punched shell to the left. When the punched shell passes through the grinding belt 35, the lower surface of the punching position of the shell is polished by the grinding belt 35. When the next shell to be punched moves back to the bottom of the pushing member 41, repeat the above steps to punch the shell.

[0052] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying 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 cannot be understood as a limitation on the present invention.

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

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic hole-opening device for lithium battery aluminum alloy shell, characterized in that: It comprises a support frame (1), an intermittent belt conveyor (2) is arranged on the inner side of the support frame (1), and a punching mechanism (4) is arranged on the upper side of the support frame (1); An auxiliary mechanism (3) for supporting and limiting the front and rear positions of the housing, the auxiliary mechanism (3) being arranged on the support frame (1) and located below the punching mechanism (4); The auxiliary mechanism (3) comprises two front-to-rear symmetrical support plates (31) fixedly connected to the inner side of the support frame (1), and a grinding belt (35) is provided on the upper surface of the support plate (31); The punching mechanism (4) comprises a pushing member (41) arranged at the top end of the inner side of the support frame (1); a limiting member (44) for adjusting and limiting the left and right positions of the housing is arranged at the lower side of the pushing member (41); and a punching member (45) is arranged at a position on the lower side of the pushing member (41) corresponding to the limiting member (44); The punching member (45) comprises four punching heads (451) fixedly connected to the lower side of the pushing member (41) and arranged in a rectangular shape, and two symmetrical displacement slide grooves (454) are arranged on the outer circumferential surface of the punching head (451), and a grinding ring (453) is slidably connected to the two displacement slide grooves (454) via two connecting slide columns (452); When the punching member (45) continues to move downward after completing the synchronous punching of the four mounting holes, the grinding ring (453) rotates to grind the upper surfaces of the mounting holes. After the grinding is completed, the intermittent belt conveyor (2) drives the housing to move rightward to grind the lower surfaces of the mounting holes through the grinding belt (35).

2. The automatic hole-punching device for an aluminum alloy shell of a lithium battery according to claim 1, characterized in that: The grinding ring (453) is coaxial with 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; an accommodating cavity is provided on the inner wall at the top end of the groove; a discharge rod (455) is slidably connected to the bottom end of the pusher (41) in an up-and-down manner; the discharge rod (455) is slidably connected to the accommodating cavity; a connecting spring is provided between the top end of the discharge rod (455) and the inner wall at the top end of the accommodating cavity.

3. The automatic hole-punching device for lithium battery aluminum alloy shell according to claim 1, characterized in that: The pushing member (41) comprises a rectangular connecting frame (413) fixedly connected to the inner side of the top end of the supporting frame (1); two front-to-rear symmetrical hydraulic telescopic cylinders (411) are fixedly connected to the upper surface of the rectangular connecting frame (413); the telescopic ends of the hydraulic telescopic cylinders (411) penetrate the lower surface of the rectangular connecting frame (413) and are fixedly connected to a linkage plate (414); the left and right sides of the upper surface of the linkage plate (414) are fixedly connected to first limiting slide bars (412); the top end of the first limiting slide bar (412) slides through the upper surface of the rectangular connecting frame (413) and is connected to a return spring between the upper surface of the rectangular connecting frame (413); the return spring is sleeved on the outer side of the corresponding first limiting slide bar (412); the two linkage plates (414) respectively correspond to two left and right punching heads (451) of four rectangularly distributed punching heads (451); the lower surface of the linkage plate (414) is fixedly connected to the upper surface of the punching head (451).

4. The automatic hole-punching device for aluminum alloy shell of lithium battery according to claim 3, characterized in that: The limiting member (44) comprises a mounting slot (441) provided at both left and right ends of the lower surface of the linkage plate (414); the inside of the mounting slot (441) is connected to a limiting block (445) in a sliding manner in the left-right direction; the lower surface of the linkage plate (414) and the position corresponding to the mounting slot (441) are fixedly connected to a second limiting slide bar (442); four limiting blocks (445) correspond to four second limiting slide bars (442) one by one and are connected in a sliding manner in the left-right direction; an elastic telescopic connecting rod (443) is fixedly connected between the second limiting slide bars (442) and the corresponding limiting blocks (445); the opposite surfaces of the two limiting blocks (445) distributed front and back are fixedly connected to an adjusting column (444); the opposite surfaces of the two limiting blocks (445) distributed left and right are embedded with two auxiliary belts (446) that rotate in the up-down direction; and the two punching heads (451) corresponding to the same linkage plate (414) are located between the two limiting blocks (445).

5. The automatic hole-punching device for aluminum alloy shell of lithium battery according to claim 4, characterized in that: Two groups of left-right symmetrical adjustment plates (43) are fixedly connected to the lower side of the pushing member (41), the number of the adjustment plates (43) in each group is two and they are symmetrical in front and back, an X-shaped stabilizing frame (42) is fixedly connected between the opposite surfaces of the two front-back symmetrical adjustment plates (43), a connecting slide groove extending in the up-down direction is provided on the adjustment plate (43), and corresponding arc-shaped protrusions and arc-shaped grooves are respectively provided on the two vertical surfaces of the connecting slide groove, and the four adjustment columns (444) correspond to the four connecting slide grooves one by one and are slidably connected.

6. The automatic hole-punching device for the aluminum alloy shell of a lithium battery according to claim 4, characterized in that: The left and right side surfaces of the bottom end of the limit block (445) are both arranged as inclined surfaces, and the two auxiliary belts (446) on the limit block (445) are respectively arranged on the vertical surface and the inclined surface of the limit block (445), and the auxiliary belt (446) on the vertical surface and the auxiliary belt (446) on the inclined surface have different sizes.

7. The automatic hole-punching device for aluminum alloy shell of lithium battery according to claim 1, characterized in that: Two left-right symmetrical rectangular auxiliary through holes (32) are provided on the right side of the upper surface of the support plate (31); two left-right symmetrical circular blanking through holes (34) are provided on the upper surface of the support plate (31) and located between the two rectangular auxiliary through holes (32); blanking channels (33) are fixedly connected to the positions of the circular blanking through holes (34) on the lower surface of the support plate (31); and the punching head (451) and the circular blanking through holes (34) are clearance-matched.

8. The automatic hole-punching device for the aluminum alloy shell of a lithium battery according to claim 7, characterized in that: The right ends of the two support plates (31) are both arranged at an angle, and the right ends of the two support plates (31) together form an outwardly flared trumpet-shaped structure.

9. The automatic hole-punching device for aluminum alloy shell of lithium battery according to claim 7, characterized in that: A plurality of position limiting clips are evenly distributed on the belt surface of the intermittent belt conveyor (2), and the intermittent belt conveyor (2) is located directly below the area between the two support plates (31).

10. The automatic hole-punching device for aluminum alloy shell of lithium battery according to claim 7, characterized in that: The material discharge channel (33) is arranged to be through-connected from top to bottom, and a collecting bin (5) for collecting punching waste falling from the material discharge channel (33) is slidably connected to the middle of the support frame (1).

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