Punching machine for automobile battery shell

Abstract

The punching machine for the automobile battery shell comprises a rack, a movable die, a fixed die, a driving part and a heating assembly, the fixed die is arranged on the rack, the movable die is slidably connected to the rack in the direction close to or away from the fixed die, the driving part is used for driving the movable die to move, and the heating assembly is arranged on the rack. The heating assembly comprises a heating disc, a plurality of magnets and a driving part, the heating disc is located below the fixed mold and rotationally connected to the rack, the magnets are distributed in the circumferential direction of the heating disc, the magnetic poles, facing the fixed mold, of the adjacent magnets are opposite, and the driving part is used for driving the heating disc to rotate. The aluminum alloy stamping die has the effects of reducing springback after aluminum alloy stamping, reducing the size error of a finished product and reducing secondary correction caused by manual fixing.

Description

Technical Field

[0001] The present application relates to the field of punching machines, and in particular to a punching machine for a battery housing of an automobile. Background Art

[0002] The battery pack is the core energy source of new energy vehicles, providing driving power for the entire vehicle. The battery pack body is mainly composed of a shell envelope. As the carrier of the battery module, the battery shell plays a key role in the safe operation and protection of the battery module. The battery shell is often made of aluminum alloy, which has the characteristics of easy processing, high temperature corrosion resistance and good conductivity.

[0003] At present, a Chinese utility model patent with publication number CN221414626U has disclosed a battery steel shell precision stamping equipment, including a concave frame, the bottom of the inner cavity of the concave frame is rotatably connected to a rotating shaft through a bearing, the top of the rotating shaft is fixedly connected to a carrying plate, the top of the carrying plate is evenly fixedly installed with a lower mold, and the bottom of the carrying plate is evenly opened with positioning grooves. The utility model has the effect of improving the stamping efficiency.

[0004] Aluminum alloy will rebound during the stamping process, which will cause dimensional errors in the finished product and require manual secondary correction. Existing stamping machines cannot directly produce the high-precision tolerance requirements of new energy battery shells. Summary of the invention

[0005] In order to reduce the springback of aluminum alloy after stamping, reduce the dimensional error of the finished product, and thus reduce the secondary correction of manual fixation, the present application provides a stamping machine for an automobile battery housing.

[0006] The present application provides a punching machine for a car battery housing, which adopts the following technical solution: A punching machine for an automobile battery shell comprises a frame, a movable die, a fixed die, a driving member and a heating assembly, wherein the fixed die is arranged on the frame, the movable die is slidably connected to the frame in a direction approaching or moving away from the fixed die, the driving member is used to drive the movable die to move, the heating assembly comprises a heating plate, a plurality of magnets and a driving member, the heating plate is located below the fixed die, the heating plate is rotatably connected to the frame, a plurality of magnets are distributed along the circumference of the heating plate, the magnetic poles of adjacent magnets facing the fixed die are opposite, and the driving member is used to drive the heating plate to rotate.

[0007] By adopting the above technical scheme, the rebound of the aluminum alloy plate is related to the temperature of the aluminum alloy plate stamping. When the aluminum alloy plate is increased, the plasticity can be improved and the rebound can be reduced. The staff first places the aluminum alloy plate to be stamped on the fixed mold, and then the staff starts the driving member, which will drive the heating plate to rotate, and the magnet on the heating plate rotates to form an alternating magnetic field. The fixed mold is located in the alternating magnetic field, and the magnetic field will cut the fixed mold, so that a stirring current is generated in the fixed mold, and eddy current flows inside the fixed mold. The fixed mold has resistance and generates Joule heat, which increases the temperature of the surface of the fixed mold. During the stamping process, the aluminum alloy will be close to the surface of the inner cavity of the fixed mold, and the heat of the inner cavity of the fixed mold is transferred to the aluminum alloy. The temperature of the aluminum alloy increases, the plasticity of the aluminum alloy is improved, the rebound after stamping is reduced, and the size error of the finished product is reduced, thereby reducing the situation of manual fixation and secondary correction.

[0008] Optionally, the driving member includes a first bevel gear, a second bevel gear, a driving gear and a driving rack, the first bevel gear is arranged on the heating plate, the second bevel gear is rotatably connected to the frame, the first bevel gear is meshed with the second bevel gear, the length direction of the driving rack is parallel to the sliding direction of the movable mold, the driving rack is arranged on the movable mold, the driving gear is rotatably connected to the frame, the driving rack is meshed with the driving gear, and the driving gear drives the second bevel gear to rotate.

[0009] By adopting the above technical scheme, when the driving member moves the movable mold toward the fixed mold, the movable mold drives the driving rack to slide, the driving rack drives the driving gear to rotate, the driving gear drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, the first bevel gear drives the heating plate to rotate, the magnet on the heating plate rotates relative to the fixed mold, the alternating magnetic field generated by the magnet cuts the fixed mold, and heat is generated on the surface of the fixed mold. With the cooperation of the movable mold and the fixed mold, the aluminum alloy plate forms the shape of the battery shell. Since the temperature of the fixed mold is transferred to the aluminum alloy plate, the plasticity of the aluminum alloy plate is improved, and the rebound after stamping is reduced. Through the driving member, the temperature of the aluminum alloy plate can be increased before stamping, thereby improving the rationality of the equipment.

[0010] Optionally, the driving member also includes a first clutch plate, a second clutch plate and a clutch spring, the first clutch plate is arranged on the driving gear, the second clutch plate is slidably connected to the second bevel gear along the axial direction of the second bevel gear, the first clutch plate is provided with a plurality of latching teeth, and the plurality of latching teeth are distributed along the axis of the first clutch plate, the second clutch plate is provided with a latching groove for engaging with the latching teeth, the clutch spring is used to keep the latching teeth engaged with the latching groove, and the second clutch plate is provided with a guiding inclined surface for guiding the latching teeth to disengage from the latching groove.

[0011] By adopting the above technical solution, when the movable mold moves toward the fixed mold, the driving rack moves driven by the movable mold, and the driving rack drives the driving gear to rotate. At this time, the teeth of the first clutch disk cooperate with the slots on the second clutch disk, and the driving gear can drive the second bevel gear to rotate, and the second bevel gear drives the first bevel gear to rotate. At this time, the heating disk rotates normally, and the alternating magnetic field generated by the magnet increases the surface temperature of the fixed mold, thereby achieving heating of the aluminum alloy plate; and when the movable mold rotates in the direction away from the fixed mold after completing the stamping, the driving rack drives the driving gear to rotate. Since the rotation direction of the first clutch disk changes at this time, the guiding inclined surface of the second clutch disk makes it impossible for the teeth of the first clutch disk to remain engaged in the slots, and the second clutch disk cannot rotate smoothly, so the heating disk cannot rotate. At this time, the magnet cannot generate an alternating magnetic field relative to the fixed mold, and the temperature of the fixed mold no longer rises, which is convenient for subsequent staff to take out the product.

[0012] Optionally, the driving member includes a driving motor, a first driving gear, a second driving gear, a crank and a connecting rod, the crank is rotatably connected to the frame, one end of the connecting rod is rotatably connected to the distal end of the crank, the other end of the connecting rod is rotatably connected to the movable mold, the second driving gear is arranged on the crank, the first driving gear is rotatably connected to the frame, the first driving gear is meshed with the second driving gear, and the driving motor is used to drive the first driving gear to rotate.

[0013] By adopting the above technical solution, the driving motor drives the first driving gear to rotate, the first driving gear drives the second driving gear to rotate, the second driving gear drives the crank to rotate, the crank drives the connecting rod to rotate, and the connecting rod drives the movable mold to move. The driving part has a simple structure and is easy to operate by the staff.

[0014] Optionally, the first drive gear and the second drive gear are variable diameter gears, and the distance from the outer wall of the gear to the gear axis gradually increases. When the gear tooth of the first drive gear closest to the axis meshes with the gear tooth of the second gear farthest from the axis, the crank and the connecting rod press the movable mold onto the fixed mold.

[0015] By adopting the above technical solution, when the movable mold moves toward the fixed mold, the distance from the gear teeth of the first drive gear meshing with the second gear to the axis gradually decreases, while the distance from the gear teeth of the second drive gear meshing with the first drive gear to the axis gradually increases. Since the distance between the gear teeth on the gears remains consistent, the linear speed of the gear rotation is the same. When the driving motor drives the first drive gear to rotate, the rotation speed of the second drive gear gradually decreases until the movable mold is pressed against the fixed mold. Under high-speed stamping, the aluminum alloy will produce a hardening effect, the plastic deformation is not sufficient, and the stamping speed gradually decreases, which can give the aluminum alloy enough time for plastic flow, reduce elastic strain, and thus reduce springback.

[0016] Optionally, the fixed mold includes a rotating frame, two fixed mold seats and a rotating member, the rotating frame is rotatably connected to the frame, the two fixed mold seats are arranged on the rotating frame, and the rotating member is used to drive the rotating frame to rotate.

[0017] By adopting the above technical solution, when the movable die moves away from the fixed die, the staff can drive the rotating frame to rotate through the rotating part, and the rotating frame exchanges the positions of the two fixed die seats. When one of the fixed die seats is in the stamping process, the other fixed die seat is located outside the frame, which is convenient for the staff to take out the stamped battery shell and place the subsequent aluminum alloy plate to be stamped on the fixed die. Through the two fixed die seats, the time for taking out the previous workpiece, loading the next workpiece and the stamping time of the current battery shell are overlapped, thereby improving the working efficiency of the equipment.

[0018] Optionally, the rotating member includes a matching ring gear, a matching gear and a matching motor, the matching ring gear is arranged on the rotating frame, the matching gear is rotatably connected to the frame, the matching motor is arranged on the frame, and the matching motor is used to drive the matching gear to rotate.

[0019] By adopting the above technical solution, when the movable mold moves in the direction away from the fixed mold, the matching motor drives the matching gear to rotate, the matching gear drives the matching gear ring to rotate, and the matching gear drives the rotating frame to rotate. The rotating frame exchanges the positions of the two fixed molds, making it convenient for the staff to take out the battery shell being stamped this time and place the aluminum alloy plate to be stamped subsequently in the inner cavity of the fixed mold. The rotating part has a simple structure and is easy to operate.

[0020] Optionally, an ejector member for ejecting the battery shell is provided on the fixed mold, a cavity is provided in the fixed mold, the ejector member includes an ejector rod, an ejector plate, a return spring and an ejector cylinder, the ejector plate is located in the cavity, the ejector rod is provided on the ejector plate, one end of the ejector rod facing away from the ejector plate penetrates into the inner cavity of the fixed mold, the return spring is used to keep the ejector plate away from the inner cavity of the fixed mold, a connecting hole is provided at the bottom of the fixed mold, the connecting hole is connected with the cavity, the ejector cylinder is provided on the frame, and the piston rod of the ejector cylinder can penetrate into the connecting hole.

[0021] By adopting the above technical solution, when the fixed die completes stamping and the positions of the two fixed die seats are exchanged by the rotating part, the staff can start the ejection cylinder, the ejection cylinder drives the ejection plate to move, the ejection plate overcomes the elastic force of the reset spring to drive the ejection rod to move, the ejection rod ejects the battery shell located in the fixed die, and when the ejection cylinder retracts, the reset spring drives the ejection plate and the ejection plate to reset.

[0022] Optionally, the frame is provided with a positioning piece for positioning the fixed mold, the positioning piece includes a positioning bead and a positioning spring, the positioning bead is slidably connected to the frame in a direction close to or away from the rotating frame, the rotating frame is provided with two positioning grooves, the positioning spring is used to clamp the positioning bead in the positioning groove, and when the positioning bead is located in the positioning groove, one of the fixed molds is located directly below the movable mold.

[0023] By adopting the above technical solution, when the rotating member drives the rotating frame to rotate, when the fixed mold is located directly below the movable mold, the positioning bead will enter the positioning groove under the action of the positioning spring, which makes it easy for the staff to know that the fixed mold has rotated into place, thereby improving the accuracy of positioning and improving the product quality of the battery shell.

[0024] Optionally, the positioning member also includes a disassembly sleeve, a sliding groove is opened on the frame, the positioning bead and the positioning spring are located in the sliding groove, the disassembly sleeve is threadedly connected in the sliding groove, and the disassembly sleeve restricts the positioning bead from detaching from the sliding groove.

[0025] By adopting the above technical solution, the positioning bead is located in the sliding groove, and the positioning bead only moves in the sliding groove. The positioning bead is restricted from leaving the sliding groove by the disassembly sleeve, which further reduces the disordered movement of the positioning bead, thereby improving the reliability of the positioning bead.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The heating component is used to increase the temperature of the fixed die surface during the stamping process, so that the temperature of the aluminum alloy plate is increased, thereby improving the plasticity of the aluminum alloy plate and reducing the rebound of the aluminum alloy plate after stamping; 2. The first clutch plate and the second clutch plate realize that when the movable mold approaches the fixed mold, the driving member can drive the heating plate to rotate, so that the magnet generates an alternating magnetic field. When the movable mold moves away from the fixed mold, the driving member cannot drive the heating plate to rotate, and the temperature of the fixed mold cannot rise; 3. The first driving gear and the second driving gear are variable diameter gears, so that when the movable mold moves toward the fixed mold, the moving speed of the movable mold gradually decreases, thereby giving the aluminum alloy plate more time for plastic flow, reducing elastic strain, and thus reducing springback. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a punching machine used for automobile electromagnetic housing.

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle fixed mold.

[0029] Figure 3 yes Figure 2 Cross-section view of the rotating frame to show the positioning parts.

[0030] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle drive component.

[0031] Figure 5 It is a structural schematic diagram of the heating component.

[0032] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle driving member.

[0033] Figure 7 yes Figure 2 A cross-section of the center die holder showing the ejector.

[0034] Figure numerals: 1, frame; 11, sliding groove; 2, movable mold; 3, fixed mold; 31, rotating frame; 311, positioning groove; 32, fixed mold seat; 33, rotating member; 331, matching ring gear; 332, matching gear; 333, matching motor; 34, cavity; 35, connecting hole; 4, driving member; 41, driving motor; 42, first driving gear; 43, second driving gear; 44, crank; 45, connecting rod; 5, heating assembly; 51, heating plate; 511, placement groove; 52, magnet; 53, driving member; 531, first bevel gear; 532, second bevel gear; 533, driving gear; 534, driving rack; 535, first clutch plate; 536, second clutch plate; 537, clutch spring; 6. Ejector; 61. Ejector rod; 62. Ejector plate; 63. Return spring; 64. Ejector cylinder; 7. Positioning piece; 71. Positioning bead; 72. Positioning spring; 73. Disassembly sleeve; 8. Gear; 81. Slot; 82. Guide slope. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 7 This application is described in further detail.

[0036] The present application embodiment discloses a punching machine for a car battery housing. Figure 1 and Figure 2 A punching machine for a car battery shell includes a frame 1, a movable mold 2, a fixed mold 3, a driving member 4, a heating assembly 5 and an ejector 6. The movable mold 2 is slidably connected to the frame 1 in the vertical direction. The driving member 4 is used to drive the movable mold 2 to move. The fixed mold 3 includes a rotating frame 31, two fixed mold seats 32 and a rotating member 33. The rotating frame 31 is located below the movable mold 2. The rotating frame 31 is rotatably connected to the frame 1. The two fixed mold seats 32 are circumferentially distributed along the rotation axis of the rotating frame 31. The fixed mold seat 32 is fixedly arranged on the rotating frame 31. The rotating member 33 is used to drive the rotating frame 31 to rotate. The heating assembly 5 is arranged on the frame 1, and the heating assembly 5 is used to heat the fixed mold 3 located directly below the movable mold 2.

[0037] Reference Figure 1 and Figure 2 The rotating member 33 includes a matching ring gear 331, a matching gear 332 and a matching motor 333. The matching ring gear 331 is coaxially arranged with the rotating frame 31, the matching ring gear 331 is fixedly arranged on the rotating frame 31, the axis of the matching gear 332 is vertically arranged, the matching gear 332 is rotatably connected to the frame 1, the matching gear 332 is meshed with the matching ring gear 331, the matching motor 333 is fixedly arranged on the frame 1, and the output shaft of the matching motor 333 is fixedly connected to the matching gear 332.

[0038] Reference Figure 2 and Figure 3 The frame 1 is also provided with a positioning member 7 for positioning the rotating frame 31. The positioning member 7 includes a positioning bead 71, a positioning spring 72 and a disassembly sleeve 73. A sliding groove 11 is provided on the frame 1. The sliding groove 11 extends in the vertical direction. The disassembly sleeve 73 is coaxially arranged with the sliding groove 11. The disassembly sleeve 73 is threadedly connected in the sliding groove 11. The positioning column is slidably connected in the disassembly sleeve 73 in the vertical direction. The positioning spring 72 is vertically arranged. One end of the positioning spring 72 is fixedly arranged at the bottom of the sliding groove 11. The other end of the positioning spring 72 is fixedly arranged on the positioning bead 71. The disassembly sleeve 73 restricts the positioning bead 71 from detaching from the sliding groove 11. A positioning groove 311 is provided on the lower end surface of the mounting frame. The positioning spring 72 keeps the positioning column stuck in the positioning groove 311. When the positioning column is located in the positioning groove 311, one of the positioning seats is located directly below the movable mold 2.

[0039] Reference Figure 1 and Figure 4 The driving member 4 includes a driving motor 41, a first driving gear 42, a second driving gear 43, a crank 44 and a connecting rod 45. The crank 44 is horizontally arranged and located above the movable mold 2. The crank 44 is horizontally arranged and rotatably connected to the frame 1. One end of the connecting rod 45 is rotatably connected to one end of the crank 44 away from the axis of the crank 44. The other end of the connecting rod 45 is rotatably connected to the upper end surface of the movable mold 2. The second driving gear 43 is coaxially arranged with the crank 44. The second driving gear 43 is fixedly arranged on one end of the crank 44. The axis of the first driving gear 42 is parallel to the axis of the second driving gear 43. The first driving gear 42 is rotatably connected to the frame 1. The first driving gear 42 is meshed with the second driving gear 43. The driving motor 41 is fixedly arranged on the frame 1. The output shaft of the driving motor 41 is fixedly connected to the first driving gear 42.

[0040] Reference Figure 1 and Figure 4The first drive gear 42 and the second drive gear 43 are both variable diameter gears. The distance from the gear teeth of the first drive gear 42 to the axis of the first drive gear 42 increases counterclockwise, and the distance from the gear teeth of the second drive gear 43 to the axis of the second drive gear 43 increases counterclockwise. When the movable mold 2 moves toward the fixed mold 3, the distance from the gear teeth of the first drive gear 42 and the second drive gear 43 to the axis of the first drive gear 42 gradually decreases. When the movable mold 2 presses the fixed mold 3, the gear teeth of the first drive gear 42 closest to the axis mesh with the gear teeth of the second gear farthest from the axis.

[0041] Reference Figure 5 The heating assembly 5 includes a heating plate 51, a plurality of magnets 52 and a driving member 53. The driving member 53 includes a first bevel gear 531, a second bevel gear 532, a driving gear 533, a driving rack 534, a first clutch plate 535, a second clutch plate 536 and a clutch spring 537. The axis of the heating plate 51 is vertically arranged. The heating plate 51 is located below the fixed mold 3. The heating plate 51 is rotatably connected to the frame 1. The upper end surface of the heating plate 51 is provided with a plurality of placement grooves 511. The plurality of placement grooves 511 extend along the thickness direction of the heating plate 51. The plurality of placement grooves 511 are evenly distributed along the circumferential direction of the axis of the heating plate 51. The plurality of magnets 52 and the plurality of placement grooves 511 are arranged together. Correspondingly, the magnet 52 is located in the placement groove 511, and the magnetic poles of adjacent magnets 52 facing the fixed mold 3 are opposite. The first bevel gear 531 is coaxially arranged with the heating plate 51, and the first bevel gear 531 is fixedly arranged on the heating plate 51. The axis of the second bevel gear 532 is parallel to the length direction of the frame 1, and the second bevel gear 532 is rotatably connected to the frame 1. The second bevel gear 532 is meshed with the first bevel gear 531. The driving gear 533 is coaxially arranged with the second bevel gear 532, and the driving gear 533 is rotatably connected to the frame 1. The driving rack 534 is vertically arranged, and the driving rack 534 is fixedly arranged on the movable mold 2, and the driving rack 534 is meshed with the driving gear 533.

[0042] Reference Figure 5 and Figure 6The first clutch disc 535 is coaxially arranged with the driving gear 533, the first clutch disc 535 is fixedly arranged on one end of the driving gear 533, the second clutch disc 536 is coaxially arranged with the second bevel gear 532, the second clutch disc 536 is slidably connected to the second bevel gear 532 along the axial direction of the second bevel gear 532, a plurality of latch teeth 8 are arranged on one end of the first clutch disc 535 facing the second clutch disc 536, and the plurality of latch teeth 8 are evenly distributed along the circumferential direction of the axis of the first clutch disc 535, and a plurality of latch grooves 81 are opened on one end of the second clutch disc 536 facing the first clutch disc 535, and the plurality of latch grooves 81 are evenly distributed along the circumferential direction of the axis of the second clutch disc 536. The second clutch plate 536 is evenly distributed, and the slot 81 extends along the thickness direction of the second clutch plate 536. A guiding bevel 82 is provided between the bottom of the slot 81 and a side wall of the slot 81. The guiding bevel 82 is used to guide the second clutch plate 536 to move away from the first clutch plate 535. The length direction of the clutch spring 537 is parallel to the axial direction of the second bevel gear 532. One end of the clutch spring 537 is fixedly arranged on the second clutch plate 536, and the other end of the clutch spring 537 is fixedly arranged on the second bevel gear 532. When the movable mold 2 moves in the direction away from the fixed mold 3, the guiding bevel 82 on the second clutch plate 536 causes the latch tooth 8 to disengage from the slot 81.

[0043] Reference Figure 2 and Figure 7 The fixed mold 3 is provided with an ejector 6 for ejecting the battery shell, and the ejector 6 includes a plurality of ejector rods 61, an ejector plate 62, a plurality of return springs 63 and an ejector cylinder 64. A cavity 34 is provided in the fixed mold 3, and the ejector plate 62 is horizontally arranged. The ejector plate 62 is slidably connected to the cavity 34 along the vertical direction. A plurality of ejector rods 61 are evenly distributed on the upper end surface of the ejector plate 62. The ejector rods 61 pass through the cavity 34, and the upper end surface of the ejector rods 61 forms the cavity surface of the fixed mold 3. The spring 63 is coaxially arranged with the plurality of ejector rods 61, the return spring 63 is vertically arranged, the return spring 63 is sleeved on the ejector rod 61, one end of the return spring 63 is fixedly arranged on the ejector plate 62, and the other end of the return spring 63 is fixedly arranged on the top wall of the cavity 34, the ejector cylinder 64 is fixedly arranged on the frame 1, the ejector cylinder 64 is vertically arranged, and a connecting hole 35 is opened on the lower end surface of the fixed mold 3, and the piston rod of the ejector cylinder 64 is used to penetrate into the connecting hole 35 to lift the ejector plate 62.

[0044] The implementation principle of a punching machine for a car battery housing in an embodiment of the present application is as follows: the staff first places the aluminum alloy plate to be punched in the cavity of the fixed die 3, and then moves the fixed die 3 to just below the movable die 2 through the rotating member 33 and the positioning member 7, and then starts the drive motor 41, the drive motor 41 drives the first drive gear 42 to rotate, the first drive gear 42 drives the second drive gear 43 to rotate, the second drive gear 43 drives the crank 44 to rotate, the crank 44 drives the connecting rod 45 to rotate, and the movable die 2 moves toward the fixed die 3. Since the first drive gear 42 and the second drive gear 43 are both variable diameter gears, the moving speed of the movable die 2 toward the fixed die 3 gradually slows down, and the punching The speed is gradually reduced, so that the aluminum alloy has more sufficient time for plastic flow and reduces springback. At the same time, the movable mold 2 will drive the driving rack 534 to move during the movement, and the driving rack 534 will drive the driving gear 533 to rotate. The driving gear 533 drives the second bevel gear 532 to rotate, and the second bevel gear 532 drives the first bevel gear 531 to rotate. The first bevel gear 531 drives the heating plate 51 to rotate, and the heating plate 51 drives the plurality of magnets 52 to rotate. The plurality of magnets 52 form an alternating magnetic field, which cuts the fixed mold 3. The temperature of the surface of the fixed mold 3 rises, which increases the temperature of the aluminum alloy plate during the stamping process, thereby reducing the springback of the aluminum alloy plate during stamping.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A punching machine for automobile battery housing, characterized in that: The invention comprises a frame (1), a movable mold (2), a fixed mold (3), a driving member (4) and a heating assembly (5), wherein the fixed mold (3) is arranged on the frame (1), the movable mold (2) is slidably connected to the frame (1) in a direction approaching or moving away from the fixed mold (3), the driving member (4) is used to drive the movable mold (2) to move, and the heating assembly (5) comprises a heating disk (51), a plurality of magnets (52) and a driving member (53), the heating disk (51) is located below the fixed mold (3), the heating disk (51) is rotatably connected to the frame (1), the plurality of magnets (52) are distributed along the circumference of the heating disk (51), the magnetic poles of adjacent magnets (52) facing the fixed mold (3) are opposite, and the driving member (4) is used to drive the heating disk (51) to rotate.

2. A punching machine for a car battery housing according to claim 1, characterized in that: The driving member (53) comprises a first bevel gear (531), a second bevel gear (532), a driving gear (533) and a driving rack (534); the first bevel gear (531) is arranged on the heating plate (51); the second bevel gear (532) is rotatably connected to the frame (1); the first bevel gear (531) is meshed with the second bevel gear (532); the length direction of the driving rack (534) is parallel to the sliding direction of the movable mold (2); the driving rack (534) is arranged on the movable mold (2); the driving gear (533) is rotatably connected to the frame (1); the driving rack (534) is meshed with the driving gear (533); and the driving gear (533) drives the second bevel gear (532) to rotate.

3. A punching machine for a car battery housing according to claim 2, characterized in that: The driving member (53) further comprises a first clutch disk (535), a second clutch disk (536) and a clutch spring (537); the first clutch disk (535) is arranged on the driving gear (533); the second clutch disk (536) is slidably connected to the second bevel gear (532) along the axial direction of the second bevel gear (532); the first clutch disk (535) is provided with a plurality of latching teeth (8); the plurality of latching teeth (8) are distributed along the axial direction of the first clutch disk (535); the second clutch disk (536) is provided with a latching groove (81) for latching with the latching teeth (8); the clutch spring (537) is used to keep the latching teeth (8) latching with the latching groove (81); the second clutch disk (536) is provided with a guiding inclined surface (82) for guiding the latching teeth (8) to disengage from the latching groove (81).

4. A punching machine for a car battery housing according to claim 1, characterized in that: The driving member (4) comprises a driving motor (41), a first driving gear (42), a second driving gear (43), a crank (44) and a connecting rod (45); the crank (44) is rotatably connected to the frame (1); one end of the connecting rod (45) is rotatably connected to the distal end of the crank (44); the other end of the connecting rod (45) is rotatably connected to the movable mold (2); the second driving gear (43) is arranged on the crank (44); the first driving gear (42) is rotatably connected to the frame (1); the first driving gear (42) is meshed with the second driving gear (43); and the driving motor (41) is used to drive the first driving gear (42) to rotate.

5. A punching machine for automobile battery housing according to claim 4, characterized in that: The first driving gear (42) and the second driving gear (43) are variable diameter gears, and the distance between the outer wall of the variable diameter gear and the axis of the variable diameter gear gradually increases. When the gear tooth of the first driving gear (42) closest to the axis meshes with the gear tooth of the second driving gear (43) farthest from the axis, the crank (44) and the connecting rod (45) press the movable mold (2) onto the fixed mold (3).

6. A punching machine for a car battery housing according to claim 1, characterized in that: The fixed die (3) comprises a rotating frame (31), two fixed die seats (32) and a rotating member (33); the rotating frame (31) is rotatably connected to the frame (1); the two fixed die seats (32) are arranged on the rotating frame (31); and the rotating member (33) is used to drive the rotating frame (31) to rotate.

7. A punching machine for automobile battery housing according to claim 6, characterized in that: The rotating member (33) comprises a matching ring gear (331), a matching gear (332) and a matching motor (333); the matching ring gear (331) is arranged on the rotating frame (31); the matching gear (332) is rotatably connected to the frame (1); the matching motor (333) is arranged on the frame (1); and the matching motor (333) is used to drive the matching gear (332) to rotate.

8. A punching machine for automobile battery housing according to claim 6, characterized in that: The fixed mold (3) is provided with an ejector member (6) for ejecting the battery shell. A cavity (34) is provided in the fixed mold (3). The ejector member (6) comprises an ejector rod (61), an ejector plate (62), a return spring (63) and an ejector cylinder (64). The ejector plate (62) is located in the cavity (34). The ejector rod (61) is provided on the ejector plate (62). An end of the ejector rod (61) that is away from the ejector plate (62) penetrates into the inner cavity of the fixed mold (3). The return spring (63) is used to keep the ejector plate (62) away from the inner cavity of the fixed mold (3). A communicating hole (35) is provided at the bottom of the fixed mold (3). The communicating hole (35) is communicated with the cavity (34). The ejector cylinder (64) is provided on the frame (1). The piston rod of the ejector cylinder (64) can penetrate into the communicating hole (35).

9. A punching machine for a car battery housing according to claim 6, characterized in that: The frame (1) is provided with a positioning member (7) for positioning the fixed mold (3), the positioning member (7) comprising a positioning bead (71) and a positioning spring (72), the positioning bead (71) being slidably connected to the frame (1) in a direction approaching or moving away from the rotating frame (31), the rotating frame (31) being provided with two positioning grooves (311), the positioning spring (72) being used for clamping the positioning bead (71) in the positioning groove (311), and when the positioning bead (71) is located in the positioning groove (311), one of the fixed molds (3) is located directly below the movable mold (2).

10. A punching machine for a car battery housing according to claim 9, characterized in that: The positioning member (7) further comprises a disassembly sleeve (73); a sliding groove (11) is provided on the frame (1); the positioning bead (71) and the positioning spring (72) are located in the sliding groove (11); the disassembly sleeve (73) is threadedly connected in the sliding groove (11); and the disassembly sleeve (73) restricts the positioning bead (71) from detaching from the sliding groove (11).

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