Continuous stamping production equipment for metal glands of negative electrodes of button cells

Abstract

The invention discloses continuous stamping production equipment for a negative electrode metal gland of a button cell, and relates to the field of button cell processing. The equipment comprises a base and a rack mounted at the top of the base, a punch forming mechanism is arranged at the bottom in the rack, and a blank feeding mechanism is arranged in the rack. According to the equipment, the punch forming mechanism is arranged, in the first stage, after an upper shearing die and a lower shearing die are used for shearing a workpiece, upward-warping burrs are formed on an outer edge opening of the workpiece, in the second stage, the middle of the outer edge of the workpiece is bent upwards through a first shaping die and a first lower shaping die, and at the moment, the burrs face inwards; in the third stage, the outer edge opening is finally formed and trimmed through the second lower trimming die of the shaping base, meanwhile, the upward sunken degree of the middle of the workpiece is gradually increased through the three stages, and therefore the workpiece with the burrs turned inwards is machined, and an insulating layer can be prevented from being punctured during button cell assembling; therefore, the yield and the processing efficiency of the battery cathode cover are improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of button cell processing, in particular to a continuous stamping production device for a metal pressure cover of a negative electrode of a button cell. Background Art

[0002] A button battery is a flat battery that looks like a "button". The metal coating on the outer surface is the positive electrode of the battery, and the interior is filled with battery core material. The top opening of the metal coating is provided with a negative metal material for sealing and fixing, and the two are isolated by insulating material. Interference fitting is used for fixing during production.

[0003] In the processing of the negative electrode shell cover of the button battery, a punching machine is usually used to punch out the workpiece from the raw material blank. Usually, the upper and lower dies are used to punch once and plasticize it so that it can be completed by one punching. However, in the actual stamping process, since the end faces of the upper and lower dies are usually horizontal during stamping, the bottom of the cut surface of the workpiece after stamping is tilted outward, forming an outward-facing sharp burr. When assembling after forming, the sharp burr is very likely to puncture the insulating layer, resulting in a low qualified rate of the finished product. Secondary processing is required after stamping, and the need for secondary processing usually requires secondary loading and unloading, resulting in high production cost of the entire negative electrode shell cover. For this reason, a continuous stamping production equipment for a button battery negative electrode metal pressure cover is provided to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a continuous stamping production equipment for button cell negative electrode metal pressure covers, which solves the problem that in the existing negative electrode shell cover stamping, the upper and lower dies are usually used for one stamping. Since the end faces of the upper and lower dies are usually horizontal during stamping, the bottom of the cut surface of the workpiece after stamping is tilted outward, forming outward-facing sharp burrs. During assembly after forming, the sharp burrs are very likely to puncture the insulating layer, resulting in a low qualified rate of the finished product, and a secondary processing is required after stamping. The need for secondary processing usually requires secondary loading and unloading, resulting in a high production cost of the entire negative electrode shell cover.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A continuous stamping production device for a button cell negative electrode metal gland, comprising a base and a frame mounted on the top of the base, a stamping forming mechanism is provided at the bottom of the frame, and a blank feeding mechanism is provided inside the frame;

[0006] The stamping forming mechanism comprises a stamping table and a stamping top plate vertically movably arranged on the top of the stamping table, and a stamping upper die and a stamping lower die are arranged between the stamping table and the stamping top plate;

[0007] The stamping upper die includes an upper shearing die, a first shaping die and a second shaping die, and the stamping lower die includes a lower shearing die, a first lower shaping die and a second lower shaping die. The upper shearing die cooperates with the lower shearing die to shear the blank into a preliminary blank of the workpiece and to extend the burr of its outer ring upward. The first shaping die and the first lower shaping die are used for secondary molding of the workpiece so that its two ends are bent upward with the burr facing the inside of the workpiece. The second shaping die and the second lower shaping die are used for the final molding of the workpiece. The lower shearing die, the first lower shaping die and the second lower shaping die are all provided with shaping taps for concave processing of the workpiece.

[0008] Preferably, the stamping table is provided with a pushing mechanism for transferring the workpiece, a driving wheel is rotatably provided on one side of the frame, and the blank feeding mechanism, the stamping top plate and the pushing mechanism are all drivingly connected to the driving wheel.

[0009] Preferably, a servo motor is fixedly mounted on the back of the frame, and a transmission belt is installed between the servo motor and the driving wheel, a crankshaft is rotatably arranged on the inner top of the frame, a lifting seat is fixedly mounted on the upper surface of the stamping top plate, a crank is movably hinged on the top of the lifting seat, and a top bearing of the crank is mounted on the outer surface of the crankshaft.

[0010] Preferably, a driving gear is fixedly provided at one end of the crankshaft, a transmission gear is rotatably connected to the side wall of the frame, the transmission gear is meshed with the driving gear, a transmission shaft is rotatably connected to the outer surface of the frame, a first bevel gear is fixedly provided on the top end of the transmission shaft and the outer wall of the transmission gear, two groups of the first bevel gears are meshed, a downward gear is fixedly installed on the bottom end of the transmission shaft, and the downward gear is used to drive the pushing mechanism.

[0011] Preferably, the pushing mechanism comprises:

[0012] A U-shaped seat, which is fixedly arranged at the bottom of the punching table;

[0013] A carrier plate, which is fixedly arranged on both sides of the U-shaped seat;

[0014] A sliding block is slidably arranged on the top of the carrier plate;

[0015] A material pusher rack is slidably arranged at one end of the punching table, and the material pusher rack is fixedly connected to a set of sliding blocks, and two sets of material pusher plates are fixedly arranged on the upper surface of the material pusher rack;

[0016] A push rod is slidably arranged on the top of the other end of the punching table, and the push rod is fixedly connected to another set of sliding blocks;

[0017] A synchronous shaft, which is rotatably arranged inside the U-shaped seat;

[0018] A connecting gear, which is rotatably arranged at the bottom of the carrier plate, and a group of the connecting gears is meshed with the downlink gears;

[0019] Second bevel gears are fixedly arranged on both ends of the synchronization shaft and the two sets of connecting gears, and the two opposite sets of the second bevel gears are meshed;

[0020] A half gear, the rotation of which is arranged inside the carrier plate;

[0021] Two sets of symmetrical running racks are slidably arranged inside the carrier plate, the two sets of running racks are alternately meshed with the half gears, and the two sets of running racks are fixedly connected to the sliding block;

[0022] A bevel groove is provided at the bottom of one side of the material pushing plate, and a feeding station is provided at the other side of the material pushing plate and the end of the ejecting rod.

[0023] Preferably, the blank feeding mechanism comprises:

[0024] The material pulling power gear is rotatably arranged on the outer wall of the frame, and the material pulling power gear is meshed with the transmission gear;

[0025] A material pulling transfer wheel is rotatably arranged on the outer wall of the lower end of the frame;

[0026] The transmission pull rod has two ends eccentrically hinged to the material pulling power gear and the outer wall of the material pulling transfer wheel respectively;

[0027] The input gear is coaxially arranged with the material pulling transfer wheel, and the two are connected in a one-way transmission manner through a ratchet pawl;

[0028] Two groups of material pulling and pressing rollers are rotatably arranged in the frame, and two groups of mutually meshing synchronous gears are fixedly arranged at the ends of the two groups of material pulling and pressing rollers;

[0029] The input gear meshes with a set of synchronous gears.

[0030] Preferably, demoulding pins are slidably arranged inside the upper shearing die, the first shaping die and the second shaping die, and demoulding springs are arranged on the tops of the demoulding pins;

[0031] The lower shearing die is provided with a pressing edge meson in a sliding manner inside, and the first lower integral die and the second lower integral die are both provided with a demoulding meson in a sliding manner inside.

[0032] Preferably, the shaping taps penetrate the edge pressing meson and the demoulding meson upwardly, and the bottoms of the edge pressing meson and the demoulding meson are both provided with ejecting springs, and a plurality of the shaping taps are used to deepen the inner concavity of the workpiece multiple times.

[0033] Preferably, the lower shearing die and the upper shearing die are each provided with an oblique cut at one end opposite to each other, through which the workpiece is cut and the burr is tilted upward, a shaping seat is installed on the inner bottom of the second shaping die, and the shaping seat and the second lower shaping die trim the burr, and a flanging control plate is provided below the demolding meson in the second lower shaping die, and the flanging control plate is used to control the degree of bending.

[0034] Preferably, a positioning shaft is fixedly provided on the top of the stamping table, the stamping top plate is slidably connected to the outer surface of the positioning shaft, a positioning seat is fixedly installed on the top of the lower shearing die, the upper shearing die vertically penetrates the positioning seat, the ejecting rod horizontally penetrates the positioning seat, a discharge hole is opened on the top of the stamping table and on the side away from the ejecting rod, and a discharge pipe is installed at the bottom of the discharge hole.

[0035] The present invention discloses a continuous stamping production device for a button battery negative electrode metal gland, which has the following beneficial effects:

[0036] 1. The continuous stamping production equipment for the negative metal pressure cover of the button battery is provided with a stamping forming mechanism and uses three groups of stamping parts. In the first stage, the workpiece is sheared by the upper shearing die and the lower shearing die to form an upwardly raised burr on the outer edge of the workpiece. Then, in the second stage, the middle of the outer edge of the workpiece is bent upward by the first shaping die and the first lower shaping die, and the burr faces inward. In the third stage, the outer edge is finally formed and trimmed by the second lower shaping die of the shaping seat. At the same time, the upward concave degree of the middle part of the workpiece is gradually improved in the three stages, so as to process a workpiece with the burr folded inward. When the button battery is assembled, it can avoid puncturing the insulating layer, thereby improving the yield rate and processing efficiency of the battery negative electrode cover and reducing the production cost.

[0037] 2. The continuous stamping production equipment for the negative metal cover of the button battery is designed for the transmission part of the entire device, so that when a single servo motor is started, it synchronously drives the blank feeding mechanism, the pushing mechanism and the stamping forming mechanism to start, thereby realizing automatic loading and workpiece transfer and unloading during the continuous stamping process. The overall coordination is high, no electrical components are required, the integrity is good, and the equipment cost and control cost are lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0040] Figure 2 It is a schematic diagram of the overall back structure of the present invention;

[0041] Figure 3 It is a schematic diagram of the structure of the stamping forming mechanism of the present invention;

[0042] Figure 4 It is a schematic diagram of the structure of the material pushing mechanism of the present invention;

[0043] Figure 5 This is a schematic diagram of the bottom structure of the U-shaped seat of the present invention;

[0044] Figure 6 It is a schematic diagram of the outer surface structure of the material pushing mechanism of the present invention;

[0045] Figure 7 This is a schematic diagram of the bottom structure of the material push plate of the present invention;

[0046] Figure 8 This is a schematic diagram of the top structure of the punching table of the present invention;

[0047] Fig. 9 It is a schematic diagram of the side structure of the frame of the present invention;

[0048] Fig.10 It is a schematic diagram of the structure of the punching table and the punching top plate of the present invention;

[0049] Fig.11 It is a schematic diagram of the outer surface structure of the stamping upper die and the stamping lower die of the present invention;

[0050] Fig.12 It is a cross-sectional view of the internal structure of the stamping upper die and the stamping lower die of the present invention and a schematic diagram of the workpiece forming state.

[0051] In the figure: 1. base;

[0052] 2. Frame; 21. Servo motor; 22. Driving wheel; 23. Driving gear; 24. Transmission shaft; 25. Downward gear; 26. Transmission gear; 27. First bevel gear; 28. Crankshaft;

[0053] 3. Billet feeding mechanism; 31. Billet pulling power gear; 32. Transmission pull rod; 33. Billet pulling transfer wheel; 34. Input gear; 35. Synchronous gear; 36. Billet pulling pressure roller;

[0054] 4. Stamping forming mechanism; 41. Stamping table; 42. Stamping lower die; 421. Lower shearing die; 422. First lower shaping die; 423. Second lower shaping die; 424. Edge pressing meson; 425. Demolding meson; 426. Ejection spring; 427. Flanging control board; 428. Shaping attack; 43. Stamping top plate; 44. Lifting seat; 45. Crank; 46. Positioning shaft; 47. Feeding hole; 48. Positioning seat; 49. Stamping upper die; 491. Upper shearing die; 492. First shaping die; 493. Second shaping die; 494. Demolding pin; 495. Shaping seat; 496. Demolding spring;

[0055] 5. Pushing mechanism; 51. U-shaped seat; 52. Carrying plate; 53. Sliding block; 54. Ejecting rod; 55. Pushing rack; 56. Material pushing plate; 57. Connecting gear; 58. Second bevel gear; 59. Synchronous shaft; 510. Traveling rack; 511. Half gear; 512. Bevel groove; 513. Feeding station;

[0056] 6. Feeding pipe. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] The embodiment of the present application provides a continuous stamping production equipment for the negative electrode metal pressure cover of button cells, which solves the problem that in the existing negative electrode case cover stamping, the upper and lower dies are usually used for one stamping. Since the end faces of the upper and lower dies are usually horizontal during stamping, the bottom of the cut surface of the workpiece after stamping is tilted outward, forming outward-facing sharp burrs. During assembly after forming, the sharp burrs are very likely to puncture the insulating layer, resulting in a low qualified rate of the finished product, and a secondary processing is required after stamping. The need for secondary processing usually requires secondary loading and unloading, resulting in a high production cost of the entire negative electrode case cover.

[0059] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] The embodiment of the invention discloses a continuous stamping production device for a metal press cap of a negative electrode of a button battery.

[0061] According to the attached Figure 1-12 As shown, it includes a base 1 and a frame 2 installed on the top of the base 1, a stamping mechanism 4 is arranged at the bottom of the frame 2, and a blank feeding mechanism 3 is arranged inside the frame 2;

[0062] The stamping forming mechanism 4 includes a stamping table 41 and a stamping top plate 43 vertically movably arranged on the top of the stamping table 41, and a stamping upper die 49 and a stamping lower die 42 are arranged between the stamping table 41 and the stamping top plate 43;

[0063] The stamping upper die 49 includes an upper shearing die 491, a first shaping die 492 and a second shaping die 493, and the stamping lower die 42 includes a lower shearing die 421, a first lower shaping die 422 and a second lower shaping die 423. The upper shearing die 491 cooperates with the lower shearing die 421 to shear the blank into a preliminary blank of the workpiece and extend the burr of its outer circle upward. The first shaping die 492 and the first lower shaping die 422 are used for secondary molding of the workpiece so that its two ends are bent upward and the burr faces the inside of the workpiece. The second shaping die 493 and the second lower shaping die 423 are used for the final molding of the workpiece. The lower shearing die 421, the first lower shaping die 422 and the second lower shaping die 423 are all provided with shaping taps 428 for concave processing of the workpiece.

[0064] A pushing mechanism 5 for transferring workpieces is disposed on the punching table 41 , a driving wheel 22 is rotatably disposed on one side of the frame 2 , and the blank feeding mechanism 3 , the punching top plate 43 and the pushing mechanism 5 are all drivingly connected to the driving wheel 22 .

[0065] A servo motor 21 is fixedly installed on the back of the frame 2, and a transmission belt is installed between the servo motor 21 and the driving wheel 22. A crankshaft 28 is rotatably set on the inner top of the frame 2. A lifting seat 44 is fixedly installed on the upper surface of the stamping top plate 43. A crank 45 is movably hinged on the top of the lifting seat 44, and the top bearing of the crank 45 is installed on the outer surface of the crankshaft 28.

[0066] A driving gear 23 is fixedly provided at one end of the crankshaft 28, and a transmission gear 26 is rotatably connected to the side wall of the frame 2, and the transmission gear 26 is meshed with the driving gear 23. A transmission shaft 24 is rotatably connected to the outer surface of the frame 2, and a first bevel gear 27 is fixedly provided on the top end of the transmission shaft 24 and the outer wall of the transmission gear 26, and the two groups of first bevel gears 27 are meshed with each other. A downward gear 25 is fixedly installed at the bottom end of the transmission shaft 24, and the downward gear 25 is used to drive the pushing mechanism 5.

[0067] The material pushing mechanism 5 includes: a U-shaped seat 51, a carrier plate 52, a sliding block 53, a material pushing rod 54, a material pushing frame 55, a material pushing plate 56, a connecting gear 57, a second bevel gear 58, a synchronous shaft 59, a travel rack 510 and a half gear 511;

[0068] The U-shaped seat 51 is fixedly arranged at the bottom of the punching table 41; the carrier plate 52 is fixedly arranged on both sides of the U-shaped seat 51; the sliding block 53 is slidably arranged on the top of the carrier plate 52; the pushing rack 55 is slidably arranged at one end of the punching table 41, and the pushing rack 55 is fixedly connected to a group of sliding blocks 53, and two groups of material pushing plates 56 are fixedly arranged on the upper surface of the pushing rack 55; the ejecting rod 54 is slidably arranged at the top of the other end of the punching table 41, and the ejecting rod 54 is fixedly connected to another group of sliding blocks 53; the synchronous shaft 59 is rotatably arranged inside the U-shaped seat 51; the connecting gear 57 is rotatably arranged at the bottom of the carrier plate 52, and a group of connecting gears 57 is meshed with the downward gear 25; the second bevel gears 58 are fixedly arranged on both ends of the synchronous shaft 59 and the two groups of connecting gears 57, and the two opposite groups of second bevel gears 58 are meshed; the half gear 511 is rotatably arranged inside the carrier plate 52;

[0069] Two sets of symmetrical running racks 510 are slidably arranged inside the carrier plate 52. The two sets of running racks 510 are alternately meshed with the half gears 511. The two sets of running racks 510 are fixedly connected to the sliding block 53.

[0070] A bevel groove 512 is provided at the bottom of one side of the material pushing plate 56 , and a feeding station 513 is provided at the other side of the material pushing plate 56 and the end of the ejecting rod 54 .

[0071] The blank feeding mechanism 3 includes a material pulling power gear 31, a transmission pull rod 32, a material pulling transfer wheel 33, an input gear 34, a synchronous gear 35 and two sets of material pulling pressure rollers 36;

[0072] The material pulling power gear 31 is rotatably set on the outer wall of the frame 2, and the material pulling power gear 31 is meshed with the transmission gear 26; the material pulling transfer wheel 33 is rotatably set on the outer wall of the lower end of the frame 2; the two ends of the transmission pull rod 32 are eccentrically hinged to the material pulling power gear 31 and the outer wall of the material pulling transfer wheel 33 respectively; the input gear 34 is coaxially set with the material pulling transfer wheel 33, and the two are connected by a ratchet pawl for one-way transmission; two groups of material pulling pressure rollers 36 are rotatably set in the frame 2, and two groups of mutually meshing synchronous gears 35 are fixedly set at the ends of the two groups of material pulling pressure rollers 36; the input gear 34 is meshed with a group of synchronous gears 35.

[0073] The upper shearing die 491, the first shaping die 492 and the second shaping die 493 are all slidably provided with demoulding pins 494, and the tops of the demoulding pins 494 are provided with demoulding springs 496; the lower shearing die 421 is slidably provided with edge pressing mesons 424, and the first lower shaping die 422 and the second lower shaping die 423 are both slidably provided with demoulding mesons 425, and the shaping taps 428 penetrate the edge pressing mesons 424 and the demoulding mesons 425 upwardly, and the bottoms of the edge pressing mesons 424 and the demoulding mesons 425 are provided with ejecting springs 426, and multiple shaping taps 428 are used to deepen the inner depression of the workpiece multiple times.

[0074] The lower shearing die 421 and the upper shearing die 491 are both provided with an oblique cut at the opposite end, through which the workpiece is cut and the front is tilted upward. A shaping seat 495 is installed at the inner bottom of the second shaping die 493. The shaping seat 495 and the second lower shaping die 423 trim the bending part, and a flanging control plate 427 is provided under the demolding meson 425 in the second lower shaping die 423. The flanging control plate 427 is used to control the degree of bending.

[0075] A positioning shaft 46 is fixedly provided on the top of the stamping table 41, and the stamping top plate 43 is slidably connected to the outer surface of the positioning shaft 46. A positioning seat 48 is fixedly installed on the top of the lower shearing die 421, and the upper shearing die 491 vertically penetrates the positioning seat 48. The ejecting rod 54 horizontally penetrates the positioning seat 48. A discharge hole 47 is opened on the top of the stamping table 41 and away from the ejecting rod 54. A discharge pipe 6 is installed at the bottom of the discharge hole 47.

[0076] Working principle: When the device is in use, the servo motor 21 drives the driving wheel 22 to rotate, and the driving wheel 22 drives the driving gear 23 to rotate through the crankshaft 28. The driving gear 23 is meshed with the transmission gear 26 for transmission, thereby driving the material pulling power gear 31 to rotate, and the material pulling power gear 31 drives the transmission pull rod 32 to move up and down, and the other end of the transmission pull rod 32 pulls the material pulling transfer wheel 33 to repeatedly perform small positive and negative rotations. During the positive rotation process, the material pulling transfer wheel 33 drives the input gear 34 to rotate through the ratchet pawl, and the input gear 34 is transmitted with a group of synchronous gears 35, so that the two groups of material pulling pressure rollers 36 rotate, pushing the blank between the two groups of material pulling pressure rollers 36 to move forward; during the reversal process of the material pulling transfer wheel 33, the pawl reverses in the ratchet wheel, and the input gear 34 remains stationary at this time, so that the crankshaft 28 drives the two groups of material pulling pressure rollers 36 to rotate intermittently during the uninterrupted rotation process, thereby realizing automatic feeding and movement of the blank;

[0077] At the same time, during the above process, the crankshaft 28 rotates through the crank 45 to drive the lifting seat 44 to move up and down, so that the stamping upper die 49 repeatedly moves up and down to perform the stamping operation;

[0078] As the transmission gear 26 rotates, the transmission shaft 24 is driven to rotate through the two groups of first bevel gears 27. The bottom end of the transmission shaft 24 is meshed with a group of connecting gears 57 through the downward gear 25 for transmission. The two groups of connecting gears 57 are synchronously rotated by the second bevel gear 58 and the synchronous shaft 59, so that the connecting gears 57 on both sides rotate synchronously. The connecting gear 57 drives the half gear 511 to rotate. The half gear 511 rotates 180 degrees. At this time, the toothed side of the half gear 511 meshes with the running rack 510 on one side, so that the ejector rod 54 and the ejector rack 55 move synchronously to one end. After the half gear 511 rotates 180 degrees, the half gear 511 meshes with the running rack 510 on the other side. At this time, the half gear 511 continues to rotate, so that the ejector rod 54 and the ejector rack 55 move synchronously to the other end, so that the ejector rod 54 and the ejector rack 55 move back and forth on the punching table 41 to push the material.

[0079] During the stamping process, the blank first passes through the positioning seat 48, and the blank is located at the top of the lower shearing die 421. At this time, as the stamping upper die 49 moves downward, the upper shearing die 491 is driven to move downward, and the upper shearing die 491 is abutted against the lower shearing die 421 to achieve the punching and cutting of the workpiece, so that the workpiece enters the lower shearing die 421. At the same time, the top of the cut surface of the workpiece is formed with a burr that is tilted outward and upward through the oblique cut. When the workpiece falls into the lower shearing die 421, the upper shearing die 491 is abutted against the outer ring of the top of the edge pressing meson 424, and the outer edge of the workpiece is pressed. The upper die 491 is pressed downwards, and the ejector spring 426 is compressed. At this time, the upper die 491 and the edge pressure meson 424 hold the workpiece and move it downwards. At this time, the shaping tap 428 pushes the workpiece upwards from the middle and deforms it into the upper die 491, so that the workpiece forms a state in which the middle part is convex upwards. Then the upper die 491 is reset. At this time, the ejector spring 426 pushes the workpiece upwards, and the demoulding spring 496 ejects the workpiece from the upper die 491, completing the first stage of workpiece cutting and preliminary forming.

[0080] Then, the workpiece is pushed onto the first lower full mold 422 by the ejector rod 54. At this time, the stamping upper mold 49 moves downward again, and the workpiece is pushed into the first lower full mold 422 by the first shaping mold 492. At this time, the horizontal side of the workpiece is folded upward from the middle by the first shaping mold 492 and the top groove of the first lower full mold 422, and the burr formed in the first step is directed toward the inside of the workpiece. At the same time, the shaping tap 428 is used to deepen the groove in the middle of the workpiece.

[0081] At this time, the stamping upper die 49 moves up, the material push plate 56 moves, and the workpiece is pushed to the position of the second lower mold 423 through the feeding station 513, and then the inclined groove 512 at the bottom of the material push plate 56 is used to prevent the material push plate 56 from pushing the workpiece in the opposite direction when it is reset. At this time, the stamping upper die 49 moves down again, and the second lower mold 423 of the shaping seat 495 is used to finally shape the workpiece, so that the outer edge of the workpiece is bent more in place, and the front is facing inward. At the same time, the shaping tap 428 is used to adjust the final depth of the groove in the middle of the workpiece, and the final molding extrusion amount is ensured by the flanging control plate 427 to ensure that the final molded part meets the design requirements. Then the stamping upper die 49 moves up, the material push plate 56 moves, and the final molded workpiece is pushed to the discharge hole 47, and the material is discharged outward through the discharge pipe 6;

[0082] In the above process, the device realizes automatic loading of the blank through multiple transmission parts, and the stamping upper mold 49 repeatedly lifts and lowers for stamping. In the stamping process, the pushing mechanism 5 automatically moves the workpiece from the lower shearing mold 421 to the first lower whole mold 422, the second lower whole mold 423 and the unloading hole 47 in sequence, thereby realizing continuous automatic processing and unloading of the workpiece. The degree of automation is high and the workpiece quality is reliable. The stamping molding mechanism 4 is mainly used to realize three consecutive stamping of the workpiece, so that the middle part of the workpiece is concave upward to meet the use requirements, and at the same time, an inward folded burr is formed on the side edge of the workpiece, so that the insulating layer of the button battery will not be punctured during subsequent assembly, and there is no need to use industrial cameras for screening one by one, which improves the yield rate and processing efficiency of the battery negative electrode cover and reduces production costs.

[0083] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A continuous stamping production device for a button cell negative electrode metal gland, comprising a base (1) and a frame (2) mounted on the top of the base (1), wherein a stamping forming mechanism (4) is arranged at the bottom of the frame (2), characterized in that: A blank feeding mechanism (3) is arranged inside the frame (2); The stamping forming mechanism (4) comprises a stamping platform (41) and a stamping top plate (43) vertically movably arranged on the top of the stamping platform (41), and a stamping upper die (49) and a stamping lower die (42) are arranged between the stamping platform (41) and the stamping top plate (43); The stamping upper die (49) comprises an upper shearing die (491), a first shaping die (492) and a second shaping die (493); the stamping lower die (42) comprises a lower shearing die (421), a first lower shaping die (422) and a second lower shaping die (423); the upper shearing die (491) and the lower shearing die (421) cooperate to shear the blank into a preliminary blank of a workpiece and extend the burr of its outer ring upward; the first shaping die (492) and the first lower shaping die (422) are used for secondary molding of the workpiece so that its outer ring is bent upward and the burr faces the inner side of the workpiece; the second shaping die (493) and the second lower shaping die (423) are used for final molding of the workpiece; the lower shearing die (421), the first lower shaping die (422) and the second lower shaping die (423) are all provided with shaping taps (428) for concave processing of the workpiece.

2. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 1, characterized in that: The punching table (41) is provided with a pushing mechanism (5) for transferring workpieces, one side of the frame (2) is rotatably provided with a driving wheel (22), and the blank feeding mechanism (3), the punching top plate (43) and the pushing mechanism (5) are all drivingly connected to the driving wheel (22).

3. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 2, characterized in that: A servo motor (21) is fixedly mounted on the back of the frame (2), and a transmission belt is installed between the servo motor (21) and the driving wheel (22); a crankshaft (28) is rotatably arranged on the inner top of the frame (2); a lifting seat (44) is fixedly mounted on the upper surface of the stamping top plate (43); a crank (45) is movably hinged on the top of the lifting seat (44); and a top bearing of the crank (45) is mounted on the outer surface of the crankshaft (28).

4. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 3, characterized in that: A driving gear (23) is fixedly arranged at one end of the crankshaft (28); a transmission gear (26) is rotatably connected to the side wall of the frame (2); the transmission gear (26) is meshed with the driving gear (23); a transmission shaft (24) is rotatably connected to the outer surface of the frame (2); a first bevel gear (27) is fixedly arranged at the top end of the transmission shaft (24) and the outer wall of the transmission gear (26); two groups of the first bevel gears (27) are meshed with each other; a downward gear (25) is fixedly installed at the bottom end of the transmission shaft (24); the downward gear (25) is used to drive the pushing mechanism (5).

5. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 4, characterized in that: The pushing mechanism (5) comprises: A U-shaped seat (51) fixedly arranged at the bottom of the punching platform (41); A carrier plate (52) fixedly disposed on both sides of the U-shaped seat (51); A sliding block (53) is slidably disposed on the top of the carrier plate (52); A material pusher (55) is slidably disposed at one end of the punching platform (41), and the material pusher (55) is fixedly connected to a set of sliding blocks (53), and two sets of material pusher plates (56) are fixedly disposed on the upper surface of the material pusher (55); A push rod (54) is slidably disposed on the top of the other end of the punching platform (41), and the push rod (54) is fixedly connected to another set of sliding blocks (53); A synchronization shaft (59) rotatably disposed inside the U-shaped seat (51); A connecting gear (57) is rotatably disposed at the bottom of the carrier plate (52), and a group of the connecting gears (57) is meshed with the downlink gear (25); Second bevel gears (58) are fixedly arranged on both ends of the synchronization shaft (59) and the two sets of connecting gears (57), and the two opposite sets of the second bevel gears (58) are meshed with each other; A half gear (511) rotatably disposed inside the carrier plate (52); Two sets of symmetrical running racks (510) are slidably arranged inside the carrier plate (52), the two sets of running racks (510) are alternately meshed with the half gears (511), and the two sets of running racks (510) are fixedly connected to the sliding block (53); A bevel groove (512) is provided at the bottom of one side of the material pushing plate (56), and a feeding station (513) is provided at the other side of the material pushing plate (56) and the end of the ejecting rod (54).

6. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 1, characterized in that: The blank feeding mechanism (3) comprises: A material pulling power gear (31) is rotatably arranged on the outer wall of the frame (2), and the material pulling power gear (31) is meshed with the transmission gear (26); A material pulling transfer wheel (33) is rotatably arranged on the outer wall of the lower end of the frame (2); A transmission pull rod (32), both ends of which are eccentrically hinged to the outer wall of the material pulling power gear (31) and the material pulling transfer wheel (33); An input gear (34) is coaxially arranged with the material pulling transfer wheel (33), and the two are connected in a one-way transmission manner via a ratchet pawl; Two groups of material pulling and pressing rollers (36) are rotatably arranged in the frame (2), and two groups of mutually meshing synchronous gears (35) are fixedly arranged at the ends of the two groups of material pulling and pressing rollers (36); The input gear (34) meshes with a set of synchronous gears (35).

7. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 4, characterized in that: The upper shearing die (491), the first shaping die (492) and the second shaping die (493) are all slidably provided with demoulding pins (494), and the tops of the demoulding pins (494) are all provided with demoulding springs (496); The lower shearing die (421) is slidably provided with a pressing edge meson (424) inside, and the first lower integral die (422) and the second lower integral die (423) are both slidably provided with a demoulding meson (425) inside.

8. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 7, characterized in that: The shaping tap (428) penetrates the edge pressing meson (424) and the demoulding meson (425) upwards, and the bottom of the edge pressing meson (424) and the demoulding meson (425) are both provided with a material ejection spring (426). A plurality of shaping taps (428) are used to deepen the inner concavity of the workpiece multiple times.

9. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 8, characterized in that: The lower shearing die (421) is provided with an oblique cut at one end opposite to the upper shearing die (491), through which the workpiece is cut and the burr is tilted upwards; a shaping seat (495) is installed at the inner bottom of the second shaping die (493); the shaping seat (495) and the second lower shaping die (423) are used to trim the burr, and a flanging control plate (427) is provided below the demoulding meson (425) in the second lower shaping die (423); the flanging control plate (427) is used to control the degree of bending.

10. The continuous stamping production equipment for the negative electrode metal cover of button batteries according to claim 9, characterized in that: A positioning shaft (46) is fixedly provided on the top of the punching table (41), the punching top plate (43) is slidably connected to the outer surface of the positioning shaft (46), a positioning seat (48) is fixedly installed on the top of the lower shearing die (421), the upper shearing die (491) vertically penetrates the positioning seat (48), the ejecting rod (54) horizontally penetrates the positioning seat (48), a discharge hole (47) is opened on the top of the punching table (41) and away from the ejecting rod (54), and a discharge pipe (6) is installed at the bottom of the discharge hole (47).

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