Lithium battery pack shell punch forming equipment

Abstract

The invention discloses lithium battery pack shell punch forming equipment, and relates to the technical field of lithium battery processing, the lithium battery pack shell punch forming equipment comprises a base and a mounting plate arranged on the base; the base is provided with a stamping mechanism used for conducting continuous stamping forming on the battery pack shell. The stamping mechanism comprises a combined type male die, and the combined type male die is of a stamping head shape variable structure. The combined female die is installed on the base, and the combined male die and the combined female die are coaxially arranged in an aligned mode; the combined female die and the combined male die are arranged in a matched mode. By arranging the stamping mechanism, a combined stamping structure is formed, continuous stamping work can be achieved without repeated positioning, the problem of inaccurate positioning is solved, and the stamping efficiency is improved; and different types of stamping and stretching work can be achieved through the same power output drive, the stamping heads are used in a combined mode, and the purposes of reducing occupied space and reducing cost are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery processing, and particularly to a stamping and forming device for a lithium battery pack housing. Background Art

[0002] The battery pack housing is mainly used to protect the internal materials of the battery, enhance the strength of the outer shell, and has both aesthetic properties. It has characteristics such as explosion-proof, high-temperature resistance, and corrosion resistance; among them, the design of the lithium battery housing pays more attention to safety, heat dissipation ability, and energy density. Therefore, the lithium battery pack housing is generally made of a metal housing, such as aluminum or steel. During the processing of the lithium battery pack housing, the lithium battery pack housing is usually formed by die stretching and stamping. First, it is processed into a plate shape as the raw material, and then it is extruded and stretched into the outer shell.

[0003] In the prior art, due to the specific shape and size requirements of the lithium battery pack housing, it usually cannot be manufactured by one-time stamping and forming. This is because the fluidity and forming limit of the material during the stamping process limit the complexity and accuracy that can be achieved by single stamping. In order to obtain the required shape and ensure the quality, a multi-step stamping and stretching process is required, that is, the lithium battery pack housing is stamped and stretched multiple times by punches with gradually decreasing sizes to form the final product shape.

[0004] However, the above-mentioned stamping and forming device for the lithium battery pack housing still has the following defects: During the transportation process of the lithium battery pack housing, multiple die punches of different models arranged side by side are usually used to stamp and form the battery pack housing in sequence. Therefore, during the stamping process, the battery pack housing needs to be moved under different die punches for repositioning. Once there is a position deviation between the lithium battery pack housing and the punch, it is very likely to cause stamping failure and affect the stamping efficiency; Moreover, arranging multiple die punches of different models side by side requires multiple power output devices, which will cause space occupation and too high costs. Summary of the Invention

[0005] In order to overcome the above technical problems, the purpose of the present invention is to provide a stamping and forming device for a lithium battery pack housing, which is used to solve the problem that in the prior art, during the stamping and forming process of the lithium battery pack housing, the lithium battery pack housing needs to be transported multiple times and positioned with the corresponding die punches multiple times. Once there is a positioning deviation, it is easy to cause stamping failure and affect the stamping efficiency.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A stamping and forming device for a lithium battery pack housing, comprising a base and a mounting plate arranged on the base; a stamping mechanism for continuously stamping and forming the battery pack housing is arranged on the base; the stamping mechanism includes: a combined punch, the combined punch is arranged below the mounting plate, and the combined punch is a variable structure of the stamping head shape; a combined die, the combined die is installed on the base, and the combined punch and the combined die are coaxially aligned; and the combined die is adapted to the combined punch; a control mechanism, the control mechanism is installed on the base, and the output end of the control mechanism is connected to the combined punch; the control mechanism is used to drive the combined punch to move and close the mold with the control mechanism to stamp and form the battery pack housing.

[0007] Preferably, the combined punch includes a first sleeve, a second sleeve and a first top shaft; the first sleeve is coaxially sleeved on the second sleeve, the second sleeve is coaxially sleeved on the first top shaft, and the output end of the control mechanism is connected to the first top shaft; the first sleeve, the second sleeve and the first top shaft are combined to form a first stamping head; the second sleeve and the first top shaft are combined to form a second stamping head.

[0008] Preferably, the combined die includes a third sleeve, a fourth sleeve, a fifth sleeve and a second top shaft; the third sleeve is arranged on the base, the fourth sleeve is coaxially inserted into the third sleeve, the fifth sleeve is coaxially inserted into the fourth sleeve, the second top shaft is coaxially inserted into the fifth sleeve, and the second top shaft and the fourth sleeve have the same diameter and are coaxially arranged; the third sleeve forms a first die adapted to the first stamping head; the third sleeve and the fourth sleeve form a second die adapted to the second stamping head; the third sleeve, the fourth sleeve and the fifth sleeve form a third die adapted to the first top shaft.

[0009] Preferably, the stamping mechanism further includes an adjusting mechanism, the adjusting mechanism includes a first guiding mechanism, a stopping mechanism, a second guiding mechanism and a first driving mechanism; the first driving mechanism is used to drive the first top shaft to rotate, so that the first guiding mechanism drives the second sleeve to rotate along with the first top shaft; the stopping mechanism is used to prevent the first sleeve, the second sleeve and the first top shaft from moving synchronously; the second guiding mechanism is used to provide guidance for the movement of the first sleeve; The first guiding mechanism includes a first sliding groove, a first sliding block, a second sliding groove and a second sliding block; the first sliding groove is opened on the inner wall of the first sleeve, the first sliding block is arranged on the outer wall of the second sleeve, and the first sliding block is slidably connected to the first sliding groove, the second sliding groove is opened on the inner wall of the second sleeve, the second sliding block is arranged on the first top shaft, and the second sliding block is slidably connected to the second sliding groove; The first chute and the second chute are both of L-shaped structures, and the long sides of the L-shaped structures are parallel to the output direction of the control mechanism; when the second slider is within the short side of the second chute and the first slider is within the short side of the first chute, the first sleeve, the second sleeve and the first top shaft form a first stamping head; that is, when driving the first top shaft to move downward at this time, it drives the first sleeve, the second sleeve and the first top shaft to stamp synchronously; when the second slider is within the short side of the second chute and the first slider is within the long side of the first chute, the second sleeve and the first top shaft form a second stamping head; that is, when driving the first top shaft to move downward at this time, it drives the second sleeve and the first top shaft to stamp downward synchronously; when the second slider is within the long side of the second chute and the first slider is within the long side of the first chute, when driving the first top shaft to move downward at this time, it drives the first top shaft to stamp downward alone. The stop mechanism is arranged within the short side of the L-shaped structure of the first chute; the stop mechanism is used to prevent the first slider from moving into the short side of the L-shaped structure of the first chute; the stop mechanism includes a first stop block and a first spring; the first stop block is slidably connected within the short side of the first chute, the first spring is arranged within the short side of the first chute, and one end of the first spring is fixedly arranged on the first chute, and the other end of the first spring is connected to the first stop block. The second guiding mechanism includes a guiding shaft and a second spring; the guiding shaft is arranged parallel to the first top shaft, the guiding shaft is slidably connected to the mounting plate along the axis of the first top shaft; the second spring is sleeved on the guiding shaft, one end of the second spring is connected to the guiding shaft, and the other end of the second spring is connected to the mounting plate.

[0010] Preferably, the first driving mechanism includes a motor, a worm, a worm gear and a spline shaft; the motor is mounted on the mounting plate, the worm is rotatably connected to the mounting plate, the output end of the motor is coaxially connected to the worm, the spline shaft is coaxially arranged between the output end of the control mechanism and the first top shaft, one end of the spline shaft is rotatably connected to the output end of the control mechanism, the other end of the spline shaft is fixed to the first top shaft, the worm gear is coaxially and properly sleeved with the spline shaft, and the worm gear is meshed and connected with the worm.

[0011] Preferably, a support mechanism for supporting the combined die is arranged within the base; the support mechanism includes a support plate, a sector gear, an internal gear ring, a second driving mechanism and a reset mechanism; the sector gear is rotatably connected to the base, the support plate is arranged on the sector gear, the internal gear ring is rotatably connected to the base with the center of the internal gear ring as the center point, and the sector gear is meshed with the internal gear ring; when the support plate rotates to coincide with one of the diameters of the internal gear ring, the support plate is used to block the fourth sleeve and the fifth sleeve from descending; the second driving mechanism is used to drive the internal gear ring to rotate; the reset mechanism is used to drive the descended combined die to rise and reset.

[0012] Preferably, the second driving mechanism includes a cylinder, a connecting rod and a rotating rod; the cylinder is installed on the base, the connecting rod is fixedly arranged at the output end of the cylinder, the rotating rod is arranged between the internal gear ring and the connecting rod, one end of the rotating rod is hinged to the internal gear ring, and the other end of the connecting rod is hinged to the connecting rod.

[0013] Preferably, the reset mechanism includes a plurality of telescopic rods arranged in the base and a fourth spring sleeved on the telescopic rods; the plurality of telescopic rods are respectively arranged on the fourth sleeve, the fifth sleeve and the second top shaft, and the axis of the telescopic rod is parallel to the axis of the second top shaft; the telescopic rod is arranged in a dislocation manner with the support plate, that is, the telescopic rod will not hinder the rotation of the support plate.

[0014] Preferably, an auxiliary unloading mechanism for adsorbing or ejecting air is arranged on the mounting plate; the auxiliary unloading mechanism includes a telescopic airbag and a mounting frame; when the first top shaft moves, it drives the telescopic airbag to stretch or compress, so that the mounting frame generates suction or repulsive force.

[0015] Preferably, the telescopic airbag is fixedly arranged on the mounting plate, the telescopic airbag is arranged between the mounting frame and the first top shaft, one end of the telescopic airbag is connected to the first top shaft, and the other end of the telescopic airbag is connected to the mounting frame; a ventilation hole is formed on the first top shaft, and one end of the ventilation hole is communicated with the telescopic airbag; when the first top shaft descends, it drives the telescopic airbag to stretch, so that the outside air is inhaled into the telescopic airbag; when the first top shaft ascends, it drives the telescopic airbag to compress, so that the air in the telescopic airbag is ejected.

[0016] Advantages of the present invention: By setting the stamping mechanism, a combined stamping structure is formed, and continuous stamping work can be realized without multiple positioning, reducing the problem of inaccurate positioning and improving the stamping efficiency; moreover, different types of stamping and stretching work can be realized by the same power output drive, and the stamping heads are combined for use, achieving the purpose of reducing space occupation and cost; By setting the adjusting mechanism, stamping heads combined into different sizes can be used to increase or decrease the number of stampings and adjust the stamping forming shape, improving the overall versatility; and since the combined punch and the combined die are combined and detachable structures, when the components in the combined punch and the combined die are worn, the corresponding structures can be replaced, which is convenient for maintenance, improves production efficiency and flexibility; and during the combined stamping process, the next stamping work can be assisted in positioning through the combined structure, so that repeated positioning is not required before each stamping work, improving the use convenience; By setting up an auxiliary unloading mechanism, suction force is generated during stamping to reduce the air between the stamping head and the battery pack housing, improving the stamping quality; a repulsive force is generated when resetting after stamping to push the battery pack housing away from the stamping head, assisting in material unloading and enhancing the usability. Description of the Drawings

[0017] The present invention will be further described below in conjunction with the drawings.

[0018] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present invention; Figure 2 is a schematic three-dimensional structure diagram of the present invention after removing the base and the mounting plate; Figure 3 is a schematic enlarged three-dimensional structure diagram of a partial section of the combined punch of the present invention; Figure 4 is a schematic exploded enlarged three-dimensional structure diagram of the combined punch of the present invention; Figure 5 is a schematic enlarged three-dimensional structure diagram of a partial section of the first ejector shaft of the present invention; Figure 6 is a schematic enlarged three-dimensional structure diagram of the combined die of the present invention; Figure 7 is a schematic enlarged three-dimensional structure diagram of a partial section of the combined die of the present invention; Figure 8 is a schematic top view structure diagram of the support mechanism of the present invention.

[0019] In the figures: 1, base; 2, mounting plate; 3, stamping mechanism; 31, control mechanism; 32, combined punch; 321, first sleeve; 322, second sleeve; 323, first ejector shaft; 33, combined die; 331, third sleeve; 332, fourth sleeve; 333, fifth sleeve; 334, second ejector shaft; 34, adjustment mechanism; 341, first guiding mechanism; 3411, first chute; 3412, first slider; 3413, second chute; 3414, second slider; 342, stop mechanism; 3421, first stop block; 3422, first spring; 343, second guiding mechanism; 3431, guiding shaft; 3432, second spring; 344, first driving mechanism; 3441, motor; 3442, worm; 3443, worm gear; 3444, spline shaft; 35, support mechanism; 351, support plate; 352, sector gear; 353, internal gear ring; 354, second driving mechanism; 3541, cylinder; 3542, connecting rod; 3543, rotating rod; 355, reset mechanism; 3551, telescopic rod; 3552, fourth spring; 36, auxiliary unloading mechanism; 361, telescopic airbag; 362, mounting frame; 363, ventilation hole. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figure 1-8 shown, a stamping and forming device for a lithium battery pack housing, as Figure 1-2 shown, includes a base 1 and a mounting plate 2 disposed on the base 1; a stamping mechanism 3 for continuously stamping and forming the battery pack housing is provided on the base 1; the stamping mechanism 3 includes: a combined punch 32, the combined punch 32 is disposed below the mounting plate 2, and the combined punch 32 is a variable structure of the stamping head shape; a combined die 33, the combined die 33 is mounted on the base 1, and the combined punch 32 and the combined die 33 are coaxially aligned; and the combined die 33 is adapted to the combined punch 32; a control mechanism 31, the control mechanism 31 is mounted on the base 1, and the output end of the control mechanism 31 is connected to the combined punch 32; the control mechanism 31 is used to drive the combined punch 32 to move and close the mold with the control mechanism 31 to stamp and form the battery pack housing; it can be understood that the specific structure and installation method of the control mechanism 31 in this application are not limited, as long as it can drive 32 to move along the axis of 32, for example, a hydraulic cylinder drive mechanism ( Figure 1 shown).

[0022] It should be noted that through the variable structure setting of the stamping head shape of the combined punch 32, the control mechanism 31 can drive the combined punch 32 of different shapes to descend and close the mold with the combined die 33, so as to realize that only one positioning of the battery pack housing substrate is required to complete multiple stamping and stretching forming operations, without moving the position of the battery pack housing, reducing the problem of inaccurate positioning and improving the stamping efficiency; and different types of stamping and stretching operations can be realized by the same power output drive, and the stamping heads can be used in combination to achieve the purpose of reducing space occupation and cost.

[0023] As Figure 2-4 shown, the combined punch 32 includes a first sleeve 321, a second sleeve 322 and a first jackshaft 323; the first sleeve 321 is coaxially sleeved on the second sleeve 322, the second sleeve 322 is coaxially sleeved on the first jackshaft 323, and the output end of the control mechanism 31 is connected to the first jackshaft 323; the first sleeve 321, the second sleeve 322 and the first jackshaft 323 are combined to form a first stamping head; the second sleeve 322 and the first jackshaft 323 are combined to form a second stamping head.

[0024] It should be noted that when stamping the battery pack housing, first, the control mechanism 31 drives the first stamping head to descend and close the mold with the combined die 33 to complete the first stamping operation; then, the control mechanism 31 drives the second stamping head to descend and close the mold with the combined die 33 to complete the second stamping operation; then, the control mechanism 31 drives the first ejector shaft 323 to descend and close the mold with the combined die 33 to complete the third stamping operation; thus, only by positioning the battery pack housing and descending the combined punch 32, continuous stamping and stretching forming operations can be achieved, without the need to transport the battery pack housing to a new station for stamping work, without repeated positioning, reducing the occurrence of positioning deviation and improving the stamping efficiency.

[0025] As Figure 6-7 shown, the combined die 33 includes a third sleeve 331, a fourth sleeve 332, a fifth sleeve 333, and a second ejector shaft 334; the third sleeve 331 is arranged on the base 1, the fourth sleeve 332 is coaxially inserted into the third sleeve 331, the fifth sleeve 333 is coaxially inserted into the fourth sleeve 332, and the second ejector shaft 334 is coaxially inserted into the fifth sleeve 333. The second ejector shaft 334 and the fourth sleeve 332 have the same diameter and are coaxially arranged; the third sleeve 331 forms a first die that matches the first stamping head; the third sleeve 331 and the fourth sleeve 332 form a second die that matches the second stamping head; the third sleeve 331, the fourth sleeve 332, and the fifth sleeve 333 form a third die that matches the first ejector shaft 323.

[0026] It should be noted that when the control mechanism 31 drives the first stamping head to descend, the first die closes the mold with the first stamping head to complete the first stamping operation; when the control mechanism 31 drives the second stamping head to descend, the second die closes the mold with the second stamping head to complete the second stamping operation; when the control mechanism 31 drives the first ejector shaft 323 to descend, the third die closes the mold with the first ejector shaft 323 to complete the third stamping operation; it can be understood that according to the number of times the battery pack housing needs to be stamped and stretched formed, the structures of the combined punch 32 and the combined die 33 can be adjusted accordingly to increase or decrease the number of stamping times and adjust the stamping forming shape, improving the overall versatility; and since the combined punch 32 and the combined die 33 are combined and detachable structures, when the components in the combined punch 32 and the combined die 33 are worn, the corresponding structures can be replaced, which is convenient for maintenance and improves production efficiency and flexibility.

[0027] As Figure 1-4As shown, the stamping mechanism 3 further includes an adjusting mechanism 34, and the adjusting mechanism 34 includes a first guiding mechanism 341, a stopping mechanism 342, a second guiding mechanism 343, and a first driving mechanism 344. The first driving mechanism 344 is used to drive the first ejector shaft 323 to rotate, so that the first guiding mechanism 341 drives the second sleeve 322 to rotate along with the first ejector shaft 323. The stopping mechanism 342 is used to prevent the first sleeve 321, the second sleeve 322, and the first ejector shaft 323 from moving synchronously. That is, when the first ejector shaft 323 descends, due to the setting of the stopping mechanism 342, it will not drive the first sleeve 321 and the second sleeve 322 to descend synchronously. When the second sleeve 322 descends, it will not drive the first sleeve 321 to descend synchronously. The second guiding mechanism 343 is used to guide the movement of the first sleeve 321.

[0028] It should be noted that when the combined punch 32 needs to be combined into the first stamping head for use, the first driving mechanism 344 drives the first ejector shaft 323 to rotate. Due to the setting of the first guiding mechanism 341, the first ejector shaft 323 is engaged with the second sleeve 322, and drives the first ejector shaft 323 and the second sleeve 322 to rotate synchronously until the second sleeve 322 is engaged with the first sleeve 321, and the second guiding mechanism 343 is used to prevent the first ejector shaft 323 and the second sleeve 322 from continuing to rotate. At this time, when the first ejector shaft 323 is driven to descend by the control mechanism 31, it can drive the first ejector shaft 323, the second sleeve 322, and the first sleeve 321 to descend synchronously, achieving the purpose of combining into the first stamping head for stamping. When the combined punch 32 needs to be combined into the second stamping head for use, the first driving mechanism 344 drives the first ejector shaft 323 to rotate, so that the first ejector shaft 323 is engaged with the second sleeve 322, and the first ejector shaft 323 and the second sleeve 322 are combined into the second stamping head. Due to the setting of the stopping mechanism 342, when the first ejector shaft 323 is driven to descend, it can drive the second sleeve 322 to descend, and will not drive the first sleeve 321 to descend, that is, achieving the purpose of combining into the second stamping head for stamping. When the first ejector shaft 323 is directly driven to descend, due to the setting of the stopping mechanism 342, the descent of the first ejector shaft 323 will not drive the second sleeve 322 and the first sleeve 321 to descend, that is, achieving the purpose of the first ejector shaft 323 descending alone for stamping.

[0029] Such as Figure 1-4As shown in the figure, the first guiding mechanism 341 includes a first sliding groove 3411, a first sliding block 3412, a second sliding groove 3413 and a second sliding block 3414; the first sliding groove 3411 is formed on the inner wall of the first sleeve 321, the first sliding block 3412 is arranged on the outer wall of the second sleeve 322, and the first sliding block 3412 is slidably connected to the first sliding groove 3411. The second sliding groove 3413 is formed on the inner wall of the second sleeve 322, the second sliding block 3414 is arranged on the first top shaft 323, and the second sliding block 3414 is slidably connected to the second sliding groove 3413; both the first sliding groove 3411 and the second sliding groove 3413 are L-shaped structures, and the long sides of the L-shaped structures are parallel to the output direction of the control mechanism 31; when the second sliding block 3414 is within the short side of the second sliding groove 3413 and the first sliding block 3412 is within the short side of the first sliding groove 3411, the first sleeve 321, the second sleeve 322 and the first top shaft 323 form a first punching head; that is, when the first top shaft 323 is driven to move downward at this time, the first sleeve 321, the second sleeve 322 and the first top shaft 323 are driven to punch synchronously; when the second sliding block 3414 is within the short side of the second sliding groove 3413 and the first sliding block 3412 is within the long side of the first sliding groove 3411, the second sleeve 322 and the first top shaft 323 form a second punching head; that is, when the first top shaft 323 is driven to move downward at this time, the second sleeve 322 and the first top shaft 323 are driven to punch downward synchronously; when the second sliding block 3414 is within the long side of the second sliding groove 3413 and the first sliding block 3412 is within the long side of the first sliding groove 3411, when the first top shaft 323 is driven to move downward at this time, the first top shaft 323 is driven to punch downward alone.

[0030] It should be noted that when it is necessary to drive the first top shaft 323 to descend and punch, the first top shaft 323 can be directly driven to descend by the control mechanism 31. At this time, the second sliding block 3414 slides within the long side of the second sliding groove 3413, and the first sliding block 3412 slides within the long side of the first sliding groove 3411; When the combined punch 32 needs to be combined into the first punch head for use, the first driving mechanism 344 drives the first jackshaft 323 to rotate. At this time, the first slider 3412 is restricted by the stop mechanism 342, so that the first slider 3412 maintains sliding within the first chute 3411. At the same time, with the rotation of the first jackshaft 323, the second slider 3414 is driven to rotate into the short side of the second chute 3413, so that the second sleeve 322 and the first jackshaft 323 are combined to form the second punch head, and at this time it can be used for punching as the second punch head; then continue to drive the first jackshaft 323 to rotate, the second slider 3414 moves to the end of the short side of the second chute 3413. As the first jackshaft 323 continues to rotate, it pushes the second sleeve 322 to rotate, so that the first slider 3412 increases the pressure on the stop mechanism 342. At this time, the first sleeve 321 is restricted by the second guiding mechanism 343 and cannot rotate. Therefore, the first slider 3412 can squeeze the stop mechanism 342, so that the first slider 3412 can move into the short side of the first chute 3411, and further the first jackshaft 323, the second sleeve 322 and the first sleeve 321 are combined to form the first punch head structure, so that when driving the first jackshaft 323 to move up and down, the second sleeve 322 and the first sleeve 321 can be driven to move up and down synchronously.

[0031] As Figure 4 shown, the stop mechanism 342 is arranged in the short side of the L-shaped structure of the first chute 3411; the stop mechanism 342 is used to prevent the first slider 3412 from moving into the short side of the L-shaped structure of the first chute 3411; the stop mechanism 342 includes a first stop block 3421 and a first spring 3422; the first stop block 3421 is slidably connected in the short side of the first chute 3411, the first spring 3422 is arranged in the short side of the first chute 3411, and one end of the first spring 3422 is fixedly arranged on the first chute 3411, and the other end of the first spring 3422 is connected to the first stop block 3421.

[0032] It should be noted that when directly driving the first jackshaft 323 to move up and down or driving the second punch head to move up and down, the first slider 3412 is blocked by the first stop block 3421, so that the first slider 3412 is restricted to slide within the long side of the first chute 3411. Therefore, it will not drive the first sleeve 321 to move up and down synchronously, achieving the purpose of directly driving the first jackshaft 323 to move up and down or driving the second punch head to move up and down; When the combined punch 32 needs to be combined into the first punch head for use, with the rotation of the first jackshaft 323 driving the second sleeve 322 to rotate, the first slider 3412 squeezes the first stop block 3421, and further the first spring 3422 is compressed, so that the first slider 3412 can move into the short side of the first chute 3411, achieving the purpose of composition and use as the first punch head.

[0033] As Figure 4As shown, it can be understood that the present application does not limit the specific structure and installation method of the second guiding mechanism 343. Only a feasible specific implementation manner is provided below. The second guiding mechanism 343 includes a guiding shaft 3431 and a second spring 3432. The guiding shaft 3431 is arranged parallel to the first jacking shaft 323, and the guiding shaft 3431 is slidably connected to the mounting plate 2 along the axis of the first jacking shaft 323. The second spring 3432 is sleeved on the guiding shaft 3431. One end of the second spring 3432 is connected to the guiding shaft 3431, and the other end of the second spring 3432 is connected to the mounting plate 2.

[0034] It should be noted that during the process of using the combined punch 32 as the first punching head, the guiding shaft 3431 prevents the first sleeve 321 from rotating, so that as the first sleeve 321 moves up and down, the guiding shaft 3431 provides guidance, enabling the combined punch 32 to be used normally as the first punching head.

[0035] As Figure 1-8 As shown, it can be understood that the present application does not limit the specific structure and installation method of the first driving mechanism 344. Only a feasible specific implementation manner is provided below. The first driving mechanism 344 includes a motor 3441, a worm 3442, a worm gear 3443, and a spline shaft 3444. The motor 3441 is installed on the mounting plate 2, the worm 3442 is rotatably connected to the mounting plate 2, the output end of the motor 3441 is coaxially connected to the worm 3442. The spline shaft 3444 is coaxially arranged between the output end of the control mechanism 31 and the first jacking shaft 323. One end of the spline shaft 3444 is rotatably connected to the output end of the control mechanism 31, the other end of the spline shaft 3444 is fixed to the first jacking shaft 323, the worm gear 3443 is coaxially and properly fitted with the spline shaft 3444, and the worm gear 3443 is meshed with the worm 3442.

[0036] It should be noted that the motor 3441 drives the worm 3442 to rotate, the worm 3442 drives the worm gear 3443 to rotate, the worm gear 3443 drives the spline shaft 3444 to rotate, and then drives the first jacking shaft 323 to rotate, so as to achieve the purpose of combining different types of punching heads. And by properly fitting the worm gear 3443 with the spline shaft 3444, the rotation of the worm gear 3443 can drive the first driving mechanism 344 to rotate synchronously, while not affecting the control mechanism 31 to drive the spline shaft 3444 to move up and down. When stamping the battery pack housing, when the combined punch 32 is assembled into the first punch head for use, as the stamping is completed, the first punch head is driven to rise. When the bottom of the first sleeve 321 is about to separate from the inner wall of the battery pack housing, at this time, the first driving mechanism 344 can be used to drive the first ejector shaft 323 to rotate. Under the thrust of the first spring 3422, the second sleeve 322 is pushed to rotate synchronously with the first ejector shaft 323, so that the second slider 3414 is maintained within the short side of the second chute 3413, and the first slider 3412 moves into the long side of the first chute 3411. At this time, the first sleeve 321 loses its restriction. Under the action of the second spring 3432, the first sleeve 321 can be driven to move upward and reset, so that the first sleeve 321 is separated from the battery pack housing, and the first ejector shaft 323 and the second sleeve 322 are combined to form the second punch head. At this time, the control mechanism 31 can be used to drive the second punch head to descend. Since the first sleeve 321 can automatically position the position of the battery pack housing before separating from the battery pack housing, when the second punch head descends for stamping and stretching, it is not necessary to reposition the battery pack housing that has been stamped by the first punch head; When the second punch head completes stamping and resets upward, before the second sleeve 322 separates from the inner wall of the battery pack housing, the first driving mechanism 344 is used to drive the second slider 3414 to move from the short side of the second chute 3413 to the long side of the second chute 3413. Since the second sleeve 322 is guided and restricted by the first slider 3412 and the first chute 3411 at this time, the second sleeve 322 will not rotate with the rotation of the first ejector shaft 323. At this time, the control mechanism 31 can be used to drive the first ejector shaft 323 to descend, and then the third stamping operation can be carried out. And since when the first ejector shaft 323 descends, the second sleeve 322 provides a certain positioning for the battery pack housing after the second stamping, it is not necessary to reposition, and the third stamping and stretching operation can be directly carried out.

[0037] As Figure 2 and Figure 6-8 shown, a support mechanism 35 for supporting the combined female die 33 is provided in the base 1; the support mechanism 35 includes a support plate 351, a sector gear 352, an internal gear ring 353, a second driving mechanism 354 and a reset mechanism 355; the sector gear 352 is rotatably connected to the base 1, the support plate 351 is arranged on the sector gear 352, the internal gear ring 353 is rotatably connected to the base 1 with the center of the internal gear ring 353 as the origin, and the sector gear 352 meshes with the internal gear ring 353; when the support plate 351 rotates to coincide with one of the diameters of the internal gear ring 353, the support plate 351 is used to block the fourth sleeve 332 and the fifth sleeve 333 from descending; the second driving mechanism 354 is used to drive the internal gear ring 353 to rotate; the reset mechanism 355 is used to drive the combined female die 33 after descending to rise and reset.

[0038] It should be noted that when the combined punch 32 is used as the first punch head, the sector gear 352 drives the internal gear ring 353 to rotate, the internal gear ring 353 drives the sector gear 352 to rotate, and the sector gear 352 drives the support plate 351 to rotate, so that the support plate 351 is staggered from the fifth sleeve 333 and the fourth sleeve 332. That is, when the combined punch 32 and the combined die 33 are closed, the first punch head will push the fourth sleeve 332, the fifth sleeve 333 and the second ejector shaft 334 downward to cooperate with the stamping work. After the stamping of the combined punch 32 and the combined die 33 is completed and separated, the reset mechanism 355 can drive the fourth sleeve 332, the fifth sleeve 333 and the second ejector shaft 334 to rise and reset; When the combined punch 32 is used as the second punch head, the sector gear 352 drives the support plate 351 to contact and support the bottom of the fourth sleeve 332. At this time, when the combined punch 32 and the combined die 33 are closed, the battery pack housing is squeezed between the inner wall of the fourth sleeve 332 and the second punch head to achieve secondary stamping; When the first ejector shaft 323 directly descends for stamping, the sector gear 352 drives the support plate 351 to contact and support the bottoms of the fourth sleeve 332 and the fifth sleeve 333. At this time, when the first ejector shaft 323 descends, it will only push the second ejector shaft 334 downward. At the same time, the battery pack housing is squeezed between the inner wall of the fifth sleeve 333 and the first ejector shaft 323 to achieve the third stamping work; It can be understood that after each stamping work is completed, the reset mechanism 355 can drive the fourth sleeve 332, the fifth sleeve 333 and the second ejector shaft 334 to rise and reset; and during the process of adjusting the combined structure of the combined die 33, the setting of the reset mechanism 355 will not affect the normal rotation of the support plate 351.

[0039] As Figure 6-7 shown, it can be understood that the present application does not limit the specific structure and installation method of the second driving mechanism 354. The following only provides a feasible specific implementation manner; the second driving mechanism 354 includes a cylinder 3541, a connecting rod 3542 and a rotating rod 3543; the cylinder 3541 is installed on the base 1, the connecting rod 3542 is fixed to the output end of the cylinder 3541, the rotating rod 3543 is arranged between the internal gear ring 353 and the connecting rod 3542, one end of the rotating rod 3543 is hinged to the internal gear ring 353, and the other end of the connecting rod 3542 is hinged to the connecting rod 3542.

[0040] It should be noted that the cylinder 3541 drives the connecting rod 3542 to move, the connecting rod 3542 drives the rotating rod 3543 to move, thereby driving the internal gear ring 353 to rotate axially along its own axis. The rotation of the internal gear ring 353 drives the sector gear 352 to rotate to achieve the purpose of driving the support plate 351 to rotate.

[0041] AsFigure 6-7 As shown, it can be understood that the present application does not limit the specific structure and installation method of the reset mechanism 355. Only a feasible specific implementation manner is provided below. The reset mechanism 355 includes a plurality of telescopic rods 3551 disposed in the base 1 and a fourth spring 3552 sleeved on the telescopic rods 3551. The plurality of telescopic rods 3551 are respectively disposed on the fourth sleeve 332, the fifth sleeve 333, and the second top shaft 334, that is, at least one telescopic rod 3551 is disposed on the fourth sleeve 332, the fifth sleeve 333, and the second top shaft 334, and the telescopic rod 3551 is disposed parallel to the axis of the second top shaft 334. The telescopic rod 3551 is disposed offset from the support plate 351, that is, the telescopic rod 3551 does not hinder the rotation of the support plate 351.

[0042] It should be noted that when the fourth sleeve 332, the fifth sleeve 333, and the second top shaft 334 descend, they will respectively squeeze the telescopic rods 3551 connected to the fourth sleeve 332, the fifth sleeve 333, and the second top shaft 334, thereby causing the fourth spring 3552 to be compressed. After stamping is completed, the fourth spring 3552 can drive the fourth sleeve 332, the fifth sleeve 333, and the second top shaft 334 to rise and reset.

[0043] As Figure 2-3 and Figure 5 shown, an auxiliary unloading mechanism 36 for adsorbing or ejecting air is provided on the mounting plate 2. The auxiliary unloading mechanism 36 includes a telescopic airbag 361 and a mounting frame 362. When the first top shaft 323 moves, it drives the telescopic airbag 361 to extend or contract, so that the mounting frame 362 generates suction or repulsion. The telescopic airbag 361 is fixed on the mounting plate 2. The telescopic airbag 361 is disposed between the mounting frame 362 and the first top shaft 323, and one end of the telescopic airbag 361 is connected to the first top shaft 323, and the other end of the telescopic airbag 361 is connected to the mounting frame 362. A ventilation hole 363 is provided on the first top shaft 323, and one end of the ventilation hole 363 is communicated with the telescopic airbag 361. When the first top shaft 323 descends, it drives the telescopic airbag 361 to extend, so that external air is inhaled into the telescopic airbag 361. When the first top shaft 323 rises, it drives the telescopic airbag 361 to contract, so that the air in the telescopic airbag 361 is ejected.

[0044] It should be noted that when the first top shaft 323 descends to perform stamping, the telescopic airbag 361 is extended, so that the space inside the telescopic airbag 361 becomes larger, thereby generating negative pressure inside the telescopic airbag 361. Under the action of the negative pressure, suction is generated at the bottom of the first top shaft 323 through the vent hole 363, that is, during the stamping process, when the first top shaft 323 contacts the combined die 33 and pushes the combined die 33 down, the vent hole 363 continuously generates suction, and the outlet position of the vent hole 363 is the center position of the first top shaft 323, so suction can be generated on the center position of the battery pack shell, which can assist in positioning the battery pack shell; and in the process of stamping the battery pack shell, the air in the gap between the battery pack shell and the punch head can be sucked under the continuous action of the suction, thereby reducing the obstruction of the air to the stamping work, improving the flatness of the stamping of the battery pack shell, and improving the stamping quality; When the first top shaft 323 descends, the telescopic airbag 361 is compressed, and air is ejected through the vent hole 363, thereby generating a repulsive force between the formed battery pack shell and the punch head, which can assist in the blanking of the battery pack shell and improve the convenience of use.

[0045] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions 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 direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A lithium battery pack shell stamping and forming device, comprising a base (1) and a mounting plate (2) arranged on the base (1); characterized in that: The base (1) is provided with a stamping mechanism (3) for continuously stamping and forming the battery pack shell; the stamping mechanism (3) comprises: A combined punch (32), the combined punch (32) being arranged below the mounting plate (2), and the combined punch (32) being a punch head shape-variable structure; A combined concave die (33), wherein the combined concave die (33) is mounted on a base (1), and the combined convex die (32) and the combined concave die (33) are coaxially arranged in a counterposition manner; and the combined concave die (33) and the combined convex die (32) are adaptively arranged; A control mechanism (31), the control mechanism (31) being mounted on the base (1), the output end of the control mechanism (31) being connected to the combined punch (32); the control mechanism (31) being used to drive the combined punch (32) to move and close the mold with the control mechanism (31) so as to stamp and form the battery pack shell.

2. A lithium battery pack shell stamping and forming device according to claim 1, characterized in that: The combined punch (32) comprises a first sleeve (321), a second sleeve (322) and a first top shaft (323); the first sleeve (321) is coaxially sleeved on the second sleeve (322), the second sleeve (322) is coaxially sleeved on the first top shaft (323), and the output end of the control mechanism (31) is connected to the first top shaft (323); the first sleeve (321), the second sleeve (322) and the first top shaft (323) are combined to form a first punching head; the second sleeve (322) and the first top shaft (323) are combined to form a second punching head.

3. A lithium battery pack shell stamping and forming device according to claim 2, characterized in that: The combined die (33) comprises a third sleeve (331), a fourth sleeve (332), a fifth sleeve (333) and a second top shaft (334); the third sleeve (331) is arranged on the base (1); the fourth sleeve (332) is coaxially plugged into the third sleeve (331); the fifth sleeve (333) is coaxially plugged into the fourth sleeve (332); the second top shaft (334) is coaxially plugged into the fifth sleeve (333); the second top shaft (334) and the fourth sleeve (332) have the same diameter and are coaxially arranged; the third sleeve (331) forms a first die matched with the first punch head; the third sleeve (331) and the fourth sleeve (332) form a second die matched with the second punch head; the third sleeve (331), the fourth sleeve (332) and the fifth sleeve (333) form a third die matched with the first top shaft (323).

4. A lithium battery pack shell stamping forming equipment according to claim 2, characterized in that: The punching mechanism (3) further comprises an adjusting mechanism (34), wherein the adjusting mechanism (34) comprises a first guiding mechanism (341), a stopping mechanism (342), a second guiding mechanism (343) and a first driving mechanism (344); the first driving mechanism (344) is used to drive the first top shaft (323) to rotate, so that the first guiding mechanism (341) drives the second sleeve (322) to rotate along with the first top shaft (323); the stopping mechanism (342) is used to prevent the first sleeve (321), the second sleeve (322) and the first top shaft (323) from moving synchronously; and the second guiding mechanism (343) is used to provide guidance for the movement of the first sleeve (321); The first guide mechanism (341) comprises a first slide groove (3411), a first slider (3412), a second slide groove (3413) and a second slider (3414); the first slide groove (3411) is formed on the inner wall of the first sleeve (321), the first slider (3412) is arranged on the outer wall of the second sleeve (322), and the first slider (3412) is slidably connected to the first slide groove (3411), the second slide groove (3413) is formed on the inner wall of the second sleeve (322), the second slider (3414) is arranged on the first top shaft (323), and the second slider (3414) is slidably connected to the second slide groove (3413); The first slide groove (3411) and the second slide groove (3413) are both L-shaped structures, and the long sides of the L-shaped structures are parallel to the output direction of the control mechanism (31); The stop mechanism (342) is arranged in the short side of the L-shaped structure of the first slide groove (3411); the stop mechanism (342) is used to prevent the first slider (3412) from moving into the short side of the L-shaped structure of the first slide groove (3411); the stop mechanism (342) comprises a first stopper (3421) and a first spring (3422); the first stopper (3421) is slidably connected in the short side of the first slide groove (3411), the first spring (3422) is arranged in the short side of the first slide groove (3411), and one end of the first spring (3422) is fixedly arranged in the first slide groove (3411), and the other end of the first spring (3422) is connected to the first stopper (3421); The second guide mechanism (343) comprises a guide shaft (3431) and a second spring (3432); the guide shaft (3431) is arranged parallel to the first top shaft (323), and the guide shaft (3431) is slidably connected to the mounting plate (2) along the axis of the first top shaft (323); the second spring (3432) is sleeved on the guide shaft (3431), one end of the second spring (3432) is connected to the guide shaft (3431), and the other end of the second spring (3432) is connected to the mounting plate (2).

5. A lithium battery pack shell stamping and forming device according to claim 4, characterized in that: The first driving mechanism (344) comprises a motor (3441), a worm (3442), a worm wheel (3443) and a spline shaft (3444); the motor (3441) is mounted on the mounting plate (2); the worm (3442) is rotatably connected to the mounting plate (2); the output end of the motor (3441) is coaxially connected to the worm (3442); the spline shaft (3444) is coaxially arranged between the output end of the control mechanism (31) and the first top shaft (323); one end of the spline shaft (3444) is rotatably connected to the output end of the control mechanism (31); the other end of the spline shaft (3444) is fixed to the first top shaft (323); the worm wheel (3443) and the spline shaft (3444) are coaxially adapted to each other, and the worm wheel (3443) is meshingly connected to the worm (3442).

6. The lithium battery case stamping and forming equipment according to claim 3, characterized in that: A support mechanism (35) for supporting the combined concave die (33) is arranged in the base (1); the support mechanism (35) comprises a support plate (351), a sector gear (352), an inner gear ring (353), a second drive mechanism (354) and a reset mechanism (355); the sector gear (352) is rotatably connected to the base (1); the support plate (351) is arranged on the sector gear (352); the inner gear ring (353) is centered on the axis of the inner gear ring (353); The dot is rotatably connected to the base (1), and the sector gear (352) meshes with the inner gear ring (353); when the support plate (351) rotates to coincide with one of the diameters of the inner gear ring (353), the support plate (351) is used to prevent the fourth sleeve (332) and the fifth sleeve (333) from descending; the second driving mechanism (354) is used to drive the inner gear ring (353) to rotate; and the reset mechanism (355) is used to drive the combined die (33) to ascend and reset after descending.

7. A lithium battery pack shell stamping and forming device according to claim 6, characterized in that: The second driving mechanism (354) comprises a cylinder (3541), a connecting rod (3542) and a rotating rod (3543); the cylinder (3541) is mounted on the base (1); the connecting rod (3542) is fixed to the output end of the cylinder (3541); the rotating rod (3543) is arranged between the inner gear ring (353) and the connecting rod (3542); one end of the rotating rod (3543) is hinged to the inner gear ring (353); and the other end of the connecting rod (3542) is hinged to the connecting rod (3542).

8. The lithium battery case stamping and forming equipment according to claim 6, characterized in that: The reset mechanism (355) comprises a plurality of telescopic rods (3551) arranged in the base (1) and a fourth spring (3552) sleeved on the telescopic rods (3551); the plurality of telescopic rods (3551) are respectively arranged on the fourth sleeve (332), the fifth sleeve (333) and the second top shaft (334), and the telescopic rods (3551) are arranged parallel to the axis of the second top shaft (334); the telescopic rods (3551) and the support plate (351) are arranged in a staggered manner, that is, the telescopic rods (3551) will not hinder the rotation of the support plate (351).

9. The lithium battery case stamping and forming equipment according to claim 2, characterized in that: An auxiliary unloading mechanism (36) for absorbing or ejecting air is provided on the mounting plate (2); the auxiliary unloading mechanism (36) comprises a telescopic airbag (361) and a mounting frame (362); when the first top shaft (323) moves, the telescopic airbag (361) is driven to extend or compress, so that the mounting frame (362) generates suction or repulsion.

10. The lithium battery case stamping and forming equipment according to claim 9, characterized in that: The telescopic airbag (361) is fixedly mounted on the mounting plate (2). The telescopic airbag (361) is arranged between the mounting frame (362) and the first top shaft (323). One end of the telescopic airbag (361) is connected to the first top shaft (323), and the other end of the telescopic airbag (361) is connected to the mounting frame (362). The first top shaft (323) is provided with an air vent (363), and one end of the air vent (363) is connected to the telescopic airbag (361). When the first top shaft (323) descends, the telescopic airbag (361) is driven to extend, so that external air is sucked into the telescopic airbag (361). When the first top shaft (323) rises, the telescopic airbag (361) is driven to compress, so that the air in the telescopic airbag (361) is ejected.

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