CN108054439B - Lithium battery top cover pressing machine - Google Patents

Abstract

The invention provides a lithium battery top cover pressing machine which comprises a cylindrical shell, and the lithium battery top cover pressing machine comprises a rack, and a feeding mechanism, a driving motor, a feeding mechanism, a pressing mechanism and an unloading mechanism which are arranged on the rack, wherein the feeding mechanism feeds lithium batteries into the feeding mechanism one by one, the feeding mechanism wraps and positions the shells of a plurality of lithium batteries, the pressing mechanism presses the positioned lithium batteries to enable the heights of the shells of the lithium batteries to be consistent, the unloading mechanism removes the pressed lithium batteries from the feeding mechanism, and the feeding mechanism, the pressing mechanism and the unloading mechanism are driven by the driving motor. The invention has the advantages that the height and the size of each lithium battery can be kept consistent, and the like.

Description

Lithium battery top cover pressing machine

Technical Field

The invention belongs to the technical field of lithium batteries, and relates to a lithium battery top cover pressing machine.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, and along with the development of science and technology, the lithium battery is widely applied and popularized and becomes a mainstream product in the mobile power supply industry.

This application is to cylindrical lithium cell, which comprises a housin, the top cap, the negative pole piece, the top cap is the positive plate, weld between top cap and the casing, the negative pole piece passes through insulating material and fixes with the one end of lithium cell, the turn-ups of casing tip is passed through to the top cap, realize with the fixed of casing and sealed, in process of production, the top cap welds the one end at the casing earlier, then with the upper end edge upset of casing, wrap up the outer lane of top cap, however, because welding thickness, turn-ups packing force, factors such as upset position, there is the difference in each process, lead to the high difference that exists of the lithium cell of cylinder form, use in the product later stage, must exist contact failure, harmful effects such as the installation clearance is great or less, need highly revise the lithium cell.

Disclosure of Invention

The invention aims to provide a lithium battery top cover pressing machine aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to realize full-automatic size unification of lithium batteries.

The purpose of the invention can be realized by the following technical scheme: the lithium battery top cover pressing machine is characterized in that a lithium battery comprises a cylindrical shell, the pressing machine comprises a rack, and a feeding mechanism, a driving motor, a feeding mechanism, a pressing mechanism and an unloading mechanism which are arranged on the rack, the feeding mechanism feeds the lithium batteries into the feeding mechanism one by one, the feeding mechanism wraps and positions the shells of the lithium batteries, the pressing mechanism presses the positioned lithium batteries to enable the heights of the shells of the lithium batteries to be consistent, the unloading mechanism removes the pressed lithium batteries from the feeding mechanism, and the feeding mechanism, the pressing mechanism and the unloading mechanism are driven by the driving motor.

In foretell lithium cell top cap pressfitting machine, feed mechanism includes feeding box, extrusion rotor, walks the silo, turns to groove and constant head tank, a feeding chamber has in the feeding box, it communicates with each other with the feeding chamber to walk the silo, turn to groove intercommunication and walk silo and constant head tank, feeding chamber and walk and have a pharynx between the silo, the extrusion rotor rotates to be connected pharynx department, it is the heliciform to turn to the groove, it is parallel with the horizontal plane to walk the depth direction of silo, the depth direction of constant head tank is perpendicular with the horizontal plane, the extrusion rotor links to each other with driving motor.

In the above-mentioned lithium battery top cap pressfitting machine, the feed mechanism includes a cylindrical material thorax, evenly be provided with a plurality of pan feeding hole on the material thorax circumference, the pan feeding hole is link up with the outer peripheral face of material thorax, the fixed axle sleeve that is provided with in the frame, the material thorax rotates through a pivot and connects in the axle sleeve, a breach has on the axle sleeve, the pivot is fixed continuous with the material thorax, the pivot links to each other with driving motor through a reduction structure, the pressfitting mechanism is once pressfitting after the pivot rotates a whole circle.

Feeding: stack the shell of lithium cell transversely one by one at the pan feeding intracavity, the extrusion rotor is rotatory, makes the lithium cell be extruded in pharyngeal portion one by one to in getting into in proper order and walking the silo, turn to in groove and the constant head tank, turn to the groove and be the heliciform, make the lithium cell can have transverse distribution to convert the upright distribution that is located constant head tank department.

Feeding: the breach of material thorax docks with the exit of constant head tank, and under the continuous rotation of material thorax, the lithium cell is extruded one by one to the pan feeding downthehole, and after the material thorax rotates a whole circle, all downthehole lithium cells that have all held of pan feeding, at this moment, realizes the pressfitting to the lithium cell through pressing mechanism, makes the highly uniform of lithium cell, and turn-ups roughness is unanimous.

In the above pressing machine for the lithium battery top cover, the pressing mechanism comprises a pressing plate sleeved on the rotating shaft, the pressing plate is positioned above the material chamber, the pressing mechanism further comprises a swing arm hinged on the frame, a pressing block capable of abutting against the upper surface of the pressing plate is arranged on the lower surface of the swing arm, the movable end of the swing arm is connected with the rotating shaft through a transmission device, and the transmission device drives the movable end of the swing arm to press downwards once after the rotating shaft rotates for one circle and reset after pressing; the lower surface of the pressing plate is provided with pressure heads in one-to-one correspondence with the feeding holes, and the pressure heads can be inserted into the feeding holes.

The process of pressfitting is realized through the swing of swing arm, and the hinge point department of swing arm has the spring return function, automatic recovery original state after the pressfitting promptly.

In foretell lithium cell top cap pressfitting machine, transmission includes rotary column and carousel, the rotary column is fixed in the pivot, the annular has been seted up to the outer lane of rotary column, have the guide way one that link up a rotary column lateral wall and annular on the outer wall of rotary column, link up another lateral wall of rotary column and annular guide way two, guide way one is parallel with guide way two, guide way one is curved with guide way two and is described, be provided with a plurality of reference column on the side of carousel, the reference column is inserted and is established in the annular, the axis of rotary column is perpendicular with the axis of carousel, the carousel rotates and connects in the frame, the outer lane of carousel is provided with the fore-set with the reference column one-to-one, the fore-set can support and lean on in the swing arm.

This transmission realizes the timely driven between rotary column and the carousel because of the guide way is two to realize the reducing through the reference column, namely, when the reference column is located guide way two departments, no longer rotate along the buffering, and make along guide way two roll-off annuluses, adjacent reference column passes through wire guide way one and gets into in the annular, thereby realize the rotatory round of rotary column, the rotatory less corner of carousel, this device, not only can realize the location of rotary column, when in the annular promptly, the carousel can not be rotatory, the fore-set can not order about the pressfitting swing arm, and when rotatory, produce the rotation angular velocity in the twinkling of an eye, realize the cooperation of fore-set and swing arm, make the swing arm push down.

The turntable and the frame are tightly matched, so that the misoperation of the turntable is avoided.

In the above lithium battery top cover pressing machine, the pressing plate is connected with the shaft sleeve through a positioning assembly, the positioning assembly comprises a plurality of positioning rods fixed on the shaft sleeve, a plurality of guide sleeves corresponding to the positioning rods one by one are fixedly arranged on the lower surface of the pressing plate, and the positioning rods are inserted in the corresponding guide sleeves.

Because the stress point of the pressing force of the swing arm is not in the middle of the pressing plate, in order to avoid the uneven pressing force and the uneven pressing displacement, the pressing plate is connected with the shaft sleeve through a positioning assembly, so that the parallel downward movement and upward movement of the pressing plate are realized, and the balance of the pressing force of the pressing plate and the consistent pressing displacement can also be realized.

In foretell lithium cell top cap pressfitting machine, shedding mechanism includes a stripper, set up the discharge opening with the pan feeding hole one-to-one on the stripper, the clamp plate is connected with a synchronization disc through a bearing, the lower fixed surface of synchronization disc is provided with an alignment rod, the lower extreme of alignment rod has the plug of a wedge type, set up one on the material thorax and dodge the hole, the alignment rod is inserted and is established in dodging the downthehole, a locating hole has been seted up on the stripper, the locating hole inner wall has the inclined plane that a plug corresponds, and when the plug went upward, the discharge opening was just right with the pan feeding hole, and when the plug was down, the lower extreme opening in discharge hole jam pan feeding hole.

Only when discharge opening and pan feeding hole are just right to the time completely, the lithium cell can pass through the discharge opening, realizes unloading, and clamp plate pressfitting in-process, when pressfitting to the minimum, under the effect of plug and the locating hole of wedge type, the dish of unloading is twisted reverse certain angle, and just in time makes discharge opening and pan feeding hole just right, and the pressfitting resultant force effect makes the lithium cell leave the discharge opening rapidly to extrude the lithium cell.

In the above pressing machine for the lithium battery top cover, the discharge plate is connected with the rotating shaft through a torsion spring.

In the above lithium battery top cover pressing machine, a material receiving plate fixed on the frame is arranged below the discharging plate.

In foretell lithium cell top cap pressfitting machine, link to each other through the belt between driving motor and the extrusion rotor, it is connected with bevel gear one and bevel gear two to rotate in the frame, link to each other through the belt between the transmission shaft at driving motor and bevel gear one place, bevel gear one and the meshing of bevel gear two, link to each other through the belt between the transmission shaft at bevel gear two places and the pivot.

In the above lithium battery top cover pressing machine, a buffer sleeve is arranged on the rotating shaft, a first belt wheel is fixedly arranged outside the buffer sleeve, a second belt wheel is fixedly arranged on a transmission shaft where a second bevel gear is arranged, the first belt wheel is connected with the second belt wheel through a belt, and a buffer structure is arranged between the buffer sleeve and the rotating shaft.

In foretell lithium cell top cap pressfitting machine, buffer structure is including seting up a plurality of accommodation hole on the cushion collar inner wall, a ball has in the accommodation hole, support through a buffer spring between ball and the accommodation hole diapire and lean on being connected, set up the notch with the accommodation hole one-to-one on the outer wall of pivot, the ball can support and lean on in the notch.

The effect of buffering is, can prevent on the one hand that the lithium cell from locating slot department card dies to can not make the smooth entering pan feeding hole of lithium cell, on the other hand can also provide the rotation of pivot and postpone, make and have a time delay between pivot and the carousel, thereby make the pressfitting power can not be too big, can vacate the time of unloading after the pressfitting.

Buffer structure can protect lithium cell casing, when the card shell appears, appears skidding between pivot and the cushion collar to avoid lithium cell casing impaired.

In the above lithium battery top cover pressing machine, the cross section of the extrusion rotor is in a regular hexagon shape.

The regular hexagon's extrusion rotor has bigger extrusion force, however, has the extrusion rotor of six curved sides and six straight flanges, because the straight flange is shorter, the curved side is longer, can have better guide effect to the lithium cell, avoids the card dead condition to appear in pharynx department.

In foretell a lithium cell top cap pressfitting machine, the cross section of extrusion rotor includes six straight sides and six curved sides of indent, curved side and straight side alternate distribution.

In foretell lithium cell top cap pressfitting machine, the outer end of reference column has a spacing arch.

The limiting protrusion can ensure that when the positioning column moves to the first guide groove or the second guide groove, the positioning column can smoothly enter the first guide groove or the second guide groove, and stability and reliability are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present laminator.

Fig. 2 is a perspective view of the feeding mechanism of the laminating machine.

FIG. 3 is a sectional view of the feeding mechanism and the discharging mechanism of the laminating machine.

Fig. 4 is a perspective view of fig. 3.

Fig. 5 is a schematic structural view of a transmission device in the present laminating machine.

Fig. 6 is a schematic plan view of the turntable of fig. 5.

Fig. 7 is a schematic structural view of the rotary column of fig. 5.

Fig. 8 is a sectional view of the cushion structure in the present laminating machine.

FIG. 9 is a schematic view showing the structure of an extrusion rotor according to a second embodiment.

FIG. 10 is a schematic view of the extrusion rotor according to the first embodiment.

In the figure, 11, a frame, 12 and a driving motor; 21. a feeding box; 22. extruding the rotor; 23. a material feeding groove; 24. a steering groove; 25. positioning a groove; 26. a feeding cavity; 27. the pharynx; 31. a material chamber; 32. a feeding hole; 33. a shaft sleeve; 34. pressing a plate; 35. swinging arms; 36. briquetting; 37. a pressure head; 38. a rotating shaft; 41. rotating the column; 42. a turntable; 43. a ring groove; 44. a first guide groove; 45. a second guide groove; 46. a positioning column; 47. a top pillar; 48. positioning a rod; 49. a guide sleeve; 51. a stripper plate; 52. a discharge hole; 53. a synchronization disc; 54. an alignment rod; 55. a plug; 56. avoiding holes; 57. positioning holes; 58. a torsion spring; 6. a material receiving plate; 71. a first bevel gear; 72. a second bevel gear; 73. a buffer sleeve; 74. a first belt wheel; 75. a receiving hole; 76. a ball bearing; 77. a buffer spring; 78. a recess; 81. straight sides; 82. bending edges; 9. and a limiting bulge.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

The first embodiment is as follows:

as shown in fig. 1, the lithium battery includes a cylindrical housing, the laminating machine includes a frame 11, a feeding mechanism disposed on the frame 11, a driving motor 12, a feeding mechanism, a laminating mechanism and an unloading mechanism, the feeding mechanism feeds the lithium battery into the feeding mechanism one by one, the feeding mechanism wraps and positions the housings of the multiple lithium batteries, the laminating mechanism performs laminating on the positioned lithium batteries to make the heights of the housings of the lithium batteries consistent, the unloading mechanism releases the laminated lithium batteries from the feeding mechanism, and the feeding mechanism, the laminating mechanism and the unloading mechanism are driven by the driving motor 12.

As shown in fig. 1 and 2, the feeding mechanism includes a feeding box 21, an extruding rotor 22, a feeding groove 23, a turning groove 24 and a positioning groove 25, the feeding box 21 has a feeding cavity 26 therein, the feeding groove 23 is communicated with the feeding cavity 26, the turning groove 24 is communicated with the feeding groove 23 and the positioning groove 25, a throat 27 is provided between the feeding cavity 26 and the feeding groove 23, the extruding rotor 22 is rotatably connected to the throat 27, the turning groove 24 is spiral, the depth direction of the feeding groove 23 is parallel to the horizontal plane, the depth direction of the positioning groove 25 is perpendicular to the horizontal plane, and the extruding rotor 22 is connected to the driving motor 12.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the feeding mechanism includes a cylindrical material chamber 31, a plurality of material inlet holes 32 are uniformly arranged on the material chamber 31 in the circumferential direction, the material inlet holes 32 are communicated with the outer circumferential surface of the material chamber 31, a shaft sleeve 33 is fixedly arranged on the frame 11, the material chamber 31 is rotatably connected in the shaft sleeve 33 through a rotating shaft 38, the shaft sleeve 33 is provided with a gap, the rotating shaft 38 is fixedly connected with the material chamber 31, the rotating shaft 38 is connected with the driving motor 12 through a speed reducing structure, and the pressing mechanism presses once after the rotating shaft 38 rotates a full circle.

Feeding: stack the shell of lithium cell in pan feeding chamber 26 transversely one by one, extrusion rotor 22 is rotatory, makes the lithium cell be extruded in pharynx 27 one by one to in getting into in proper order and walk silo 23, turn to groove 24 and constant head tank 25, turn to groove 24 and be the heliciform, make the lithium cell can have the horizontal distribution to change the upright distribution that is located constant head tank 25 department.

Feeding: the breach of material thorax 31 docks with the exit of constant head tank 25, and under the continuous rotation of material thorax 31, the lithium cell is extruded one by one to in pan feeding hole 32, and after material thorax 31 rotated a whole circle, all held a lithium cell in the pan feeding hole 32, at this moment, realizes the pressfitting to the lithium cell through pressing mechanism, makes the highly uniform of lithium cell, and turn-ups roughness is unanimous.

As shown in fig. 1 and fig. 3, the pressing mechanism includes a pressing plate 34 sleeved on a rotating shaft 38, the pressing plate 34 is located above the material chamber 31, the pressing mechanism further includes a swing arm 35 hinged on the frame 11, a pressing block 36 capable of abutting against the upper surface of the pressing plate 34 is arranged on the lower surface of the swing arm 35, the movable end of the swing arm 35 is connected with the rotating shaft 38 through a transmission device, and the transmission device drives the movable end of the swing arm 35 to press downwards once after the rotating shaft 38 rotates for one circle, and resets after pressing; the lower surface of the platen 34 is provided with the indenters 37 corresponding one-to-one to the feeding holes 32, and the indenters 37 can be inserted into the feeding holes 32.

The process of pressfitting is realized through the swing of swing arm 35, and the hinge point department of swing arm 35 has the spring return function, automatic recovery after the pressfitting promptly.

As shown in fig. 5, 6 and 7, the transmission device includes a rotary column 41 and a rotary table 42, the rotary column 41 is fixed on the rotary shaft 38, an annular groove 43 is formed on an outer ring of the rotary column 41, a first guide groove 44 penetrating through a side wall of the rotary column 41 and the annular groove 43 and a second guide groove 45 penetrating through another side wall of the rotary column 41 and the annular groove 43 are formed on an outer wall of the rotary column 41, the first guide groove 44 and the second guide groove 45 are parallel, the first guide groove 44 and the second guide groove 45 are both curved, a plurality of positioning columns 46 are arranged on one side surface of the rotary table 42, the positioning columns 46 are inserted into the annular groove 43, an axis of the rotary column 41 is perpendicular to an axis of the rotary table 42, the rotary table 42 is rotatably connected to the frame 11, top columns 47 corresponding to the positioning columns 46 one to one are arranged on an outer ring of the rotary table 42, and the top columns 47 can abut against the swing arms 35.

The transmission device realizes timely transmission between the rotary column 41 and the rotary table 42 through the positioning column 46 due to the fact that the diameter of the first guide groove 44 and the second guide groove 45 is changed, namely, when the positioning column 46 is located at the second guide groove 45, the positioning column does not rotate along the buffer any more, and the second guide groove 45 slides out of the annular groove 43, the adjacent positioning column 46 enters the annular groove 43 through the first wire guide groove, so that the rotary column 41 rotates for one circle, the rotary table 42 rotates for a smaller rotation angle, the device not only can realize the positioning of the rotary column 41, namely, when the annular groove 43 is formed, the rotary table 42 cannot rotate, the top column 47 cannot drive the swing arm 35 to be pressed, and when the rotary column rotates, the instant rotation angular speed is generated, the matching of the top column 47 and the swing arm 35 is realized, and the swing arm 35 is pressed downwards.

The turntable 42 is tightly matched with the frame 11, so that the malfunction of the turntable 42 is avoided.

As shown in fig. 3 and 4, the pressing plate 34 is connected with the shaft sleeve 33 through a positioning assembly, the positioning assembly includes a plurality of positioning rods 48 fixed on the shaft sleeve 33, a plurality of guide sleeves 49 corresponding to the positioning rods 48 one by one are fixedly arranged on the lower surface of the pressing plate 34, and the positioning rods 48 are inserted into the corresponding guide sleeves 49.

Because the force bearing point of the pressing force of the swing arm 35 is not in the middle of the pressing plate 34, in order to avoid uneven pressing force and inconsistent pressing displacement, the pressing plate 34 is connected with the shaft sleeve 33 through a positioning component, so that the parallel downward movement and upward movement of the pressing plate 34 are realized, and the balance of the pressing force of the pressing plate 34 and the consistent pressing displacement can also be realized.

As shown in fig. 1, 3 and 4, the discharging mechanism includes a discharging plate 51, discharging holes 52 corresponding to the feeding holes 32 one by one are formed in the discharging plate 51, the pressing plate 34 is connected with a synchronizing disc 53 through a bearing, an alignment rod 54 is fixedly arranged on the lower surface of the synchronizing disc 53, a wedge-shaped plug 55 is arranged at the lower end of the alignment rod 54, an avoiding hole 56 is formed in the material chamber 31, the alignment rod 54 is inserted in the avoiding hole 56, a positioning hole 57 is formed in the discharging plate 51, an inclined surface corresponding to the plug 55 is formed on the inner wall of the positioning hole 57, when the plug 55 moves upwards, the discharging hole 52 faces the feeding hole 32, and when the plug 55 moves downwards, the discharging hole 52 blocks the lower end opening of the feeding hole 32.

The outer end of the positioning column 46 is provided with a limiting bulge 9; the limiting protrusion 9 can ensure that when the positioning column 46 moves to the first guide groove 44 or the second guide groove 45, the positioning column can smoothly enter the first guide groove or the second guide groove 45, and stability and reliability are improved.

Only when the discharge hole 52 is completely aligned with the feeding hole 32, the lithium battery can pass through the discharge hole 52 to realize discharging, and in the pressing process of the pressing plate 34, when the pressing is performed to the lowest point, the discharging disc is twisted by a certain angle under the action of the wedge-shaped plug 55 and the positioning hole 57, the discharge hole 52 is just aligned with the feeding hole 32, and the lithium battery is rapidly separated from the discharge hole 52 under the action of pressing force, so that the lithium battery is extruded.

The stripper plate 51 is connected with the rotating shaft 38 through a torsion spring 58; a receiving plate 6 fixed on the frame 11 is arranged below the discharging plate 51.

As shown in FIG. 1, the driving motor 12 is connected with the extrusion rotor 22 through a belt, the frame 11 is rotatably connected with a first bevel gear 71 and a second bevel gear 72, the driving motor 12 is connected with a transmission shaft on which the first bevel gear 71 is located through a belt, the first bevel gear 71 is meshed with the second bevel gear 72, and the transmission shaft on which the second bevel gear 72 is located is connected with the rotating shaft 38 through a belt.

As shown in fig. 1 and 8, a buffer sleeve 73 is arranged on the rotating shaft 38, a first pulley 74 is fixedly arranged outside the buffer sleeve 73, a second pulley is fixedly arranged on a transmission shaft on which the second bevel gear 72 is arranged, the first pulley 74 and the second pulley are connected through a belt, and a buffer structure is arranged between the buffer sleeve 73 and the rotating shaft 38.

The buffer structure includes a plurality of receiving holes 75 formed in the inner wall of the buffer sleeve 73, a ball 76 is disposed in the receiving hole 75, the ball 76 and the bottom wall of the receiving hole 75 are connected by a buffer spring 77, notches 78 corresponding to the receiving holes 75 one to one are formed in the outer wall of the rotating shaft 38, and the ball 76 can abut against the notches 78.

The buffering function is to prevent the lithium battery from being stuck at the positioning slot 25, so that the lithium battery cannot smoothly enter the feeding hole 32, and to provide a delay for the rotation of the rotating shaft 38, so that a delay is provided between the rotating shaft 38 and the rotating disc 42, so that the pressing force is not too large, and the unloading time can be vacated after pressing.

Buffer structure can protect lithium battery shell, and when the card shell appeared, the skidding appeared between pivot 38 and cushion collar 73 to avoid lithium battery shell impaired.

As shown in fig. 10, the cross section of the pressing rotor 22 has a regular hexagonal shape; the hexagonal pressing rotor 22 has a larger pressing force, however, the pressing rotor 22 having six curved sides 82 and six straight sides 81 has a better guiding effect on the lithium battery due to the fact that the straight sides 81 are shorter and the curved sides 82 are longer, and the pharyngeal portion 27 is prevented from being blocked.

The second embodiment:

the content of this embodiment is substantially the same as that of the first embodiment, except that:

as shown in fig. 9, the cross section of the pressing rotor 22 includes six straight sides 81 and six concavely curved sides 82, the curved sides 82 and the straight sides 81 being alternately distributed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (8)

1. The lithium battery top cover pressing machine is characterized in that a lithium battery comprises a cylindrical shell, the pressing machine comprises a rack (11), and a feeding mechanism, a driving motor (12), a feeding mechanism, a pressing mechanism and a discharging mechanism which are arranged on the rack (11), wherein the feeding mechanism feeds the lithium batteries into the feeding mechanism one by one, the feeding mechanism wraps and positions the shells of the lithium batteries, the pressing mechanism presses the positioned lithium batteries to enable the heights of the shells of the lithium batteries to be consistent, the discharging mechanism releases the pressed lithium batteries from the feeding mechanism, and the feeding mechanism, the pressing mechanism and the discharging mechanism are driven by the driving motor (12);

the feeding mechanism comprises a feeding box (21), an extrusion rotor (22), a feeding groove (23), a turning groove (24) and a positioning groove (25), wherein a feeding cavity (26) is arranged in the feeding box (21), the feeding groove (23) is communicated with the feeding cavity (26), the turning groove (24) is communicated with the feeding groove (23) and the positioning groove (25), a throat part (27) is arranged between the feeding cavity (26) and the feeding groove (23), the extrusion rotor (22) is rotatably connected to the throat part (27), the turning groove (24) is spiral, the depth direction of the feeding groove (23) is parallel to the horizontal plane, the depth direction of the positioning groove (25) is vertical to the horizontal plane, and the extrusion rotor (22) is connected with a driving motor (12);

the feeding mechanism comprises a cylindrical material chamber (31), a plurality of material inlet holes (32) are uniformly formed in the circumferential direction of the material chamber (31), the material inlet holes (32) are communicated with the outer circumferential surface of the material chamber (31), a shaft sleeve (33) is fixedly arranged on the rack (11), the material chamber (31) is rotatably connected into the shaft sleeve (33) through a rotating shaft (38), a gap is formed in the shaft sleeve (33), the rotating shaft (38) is fixedly connected with the material chamber (31), the rotating shaft (38) is connected with the driving motor (12) through a speed reducing structure, and the pressing mechanism is pressed once after the rotating shaft (38) rotates for a whole circle;

feeding: the shells of the lithium batteries are transversely stacked in the feeding cavity (26) one by one, the extrusion rotor (22) rotates to enable the lithium batteries to be extruded in the throat part (27) one by one and sequentially enter the feeding groove (23), the turning groove (24) and the positioning groove (25), and the spiral turning groove (24) enables the lithium batteries to be transversely distributed and converted into vertical distribution at the positioning groove (25);

feeding: the breach of material thorax (31) docks with the exit of constant head tank (25), and under the continuous rotation of material thorax (31), the lithium cell is extruded one by one to in pan feeding hole (32), and after material thorax (31) rotated a whole circle, all contained a lithium cell in pan feeding hole (32), at this moment, realizes the pressfitting to the lithium cell through pressing mechanism, makes the highly uniform of lithium cell, and turn-ups roughness is unanimous.

2. The lithium battery top cover pressing machine according to claim 1, wherein the pressing mechanism comprises a pressing plate (34) sleeved on a rotating shaft (38), the pressing plate (34) is positioned above the material chamber (31), the pressing mechanism further comprises a swinging arm (35) hinged on the frame (11), a pressing block (36) capable of abutting against the upper surface of the pressing plate (34) is arranged on the lower surface of the swinging arm (35), the movable end of the swinging arm (35) is connected with the rotating shaft (38) through a transmission device, and the transmission device drives the movable end of the swinging arm (35) to press downwards once after the rotating shaft (38) rotates for one circle and reset after pressing; the lower surface of the pressing plate (34) is provided with pressing heads (37) which correspond to the feeding holes (32) one by one, and the pressing heads (37) can be inserted into the feeding holes (32).

3. The lithium battery top cover pressing machine according to claim 2, wherein the transmission device comprises a rotary column (41) and a rotary table (42), the rotary column (41) is fixed on the rotating shaft (38), the outer ring of the rotary column (41) is provided with a ring groove (43), a first guide groove (44) penetrating through one side wall of the rotary column (41) and the ring groove (43) and a second guide groove (45) penetrating through the other side wall of the rotary column (41) and the ring groove (43) are arranged on the outer wall of the rotary column (41), the first guide groove (44) and the second guide groove (45) are parallel, the first guide groove (44) and the second guide groove (45) are both curved, a plurality of positioning columns (46) are arranged on one side surface of the rotary table (42), the positioning columns (46) are inserted into the ring groove (43), the axis of the rotary column (41) is perpendicular to the axis of the rotary table (42), the rotary table (42) is rotatably connected to the rack (11), the outer ring of the rotary table (42) is provided with the positioning columns (46), and the swing arms (47) can abut against the top columns (47).

4. The lithium battery top cover laminating machine according to claim 3, wherein the pressure plate (34) is connected with the shaft sleeve (33) through a positioning assembly, the positioning assembly comprises a plurality of positioning rods (48) fixed on the shaft sleeve (33), a plurality of guide sleeves (49) corresponding to the positioning rods (48) one by one are fixedly arranged on the lower surface of the pressure plate (34), and the positioning rods (48) are inserted into the corresponding guide sleeves (49).

5. The lithium battery top cover laminating machine according to claim 4, wherein the discharging mechanism comprises a discharging plate (51), discharging holes (52) corresponding to the feeding holes (32) are formed in the discharging plate (51), the pressing plate (34) is connected with a synchronizing disc (53) through a bearing, an aligning rod (54) is fixedly arranged on the lower surface of the synchronizing disc (53), a wedge-shaped plug (55) is arranged at the lower end of the aligning rod (54), an avoiding hole (56) is formed in the material chamber (31), the aligning rod (54) is inserted in the avoiding hole (56), a positioning hole (57) is formed in the discharging plate (51), an inclined surface corresponding to the plug (55) is formed in the inner wall of the positioning hole (57), the discharging hole (52) is opposite to the feeding hole (32) when the plug (55) moves upwards, and the discharging hole (52) blocks the lower end opening of the feeding hole (32) when the plug (55) moves downwards.

6. The lithium battery cell cover pressing machine according to claim 5, wherein the discharging plate (51) is connected to the rotating shaft (38) by a torsion spring (58); a material receiving plate (6) fixed on the frame (11) is arranged below the discharging plate (51); the extrusion machine is characterized in that the driving motor (12) is connected with the extrusion rotor (22) through a belt, a first bevel gear (71) and a second bevel gear (72) are connected to the rack (11) in a rotating mode, the driving motor (12) is connected with a transmission shaft where the first bevel gear (71) is located through the belt, the first bevel gear (71) is meshed with the second bevel gear (72), and the transmission shaft where the second bevel gear (72) is located is connected with the rotating shaft (38) through the belt.

7. The lithium battery top cover pressing machine according to claim 6, wherein a buffer sleeve (73) is arranged on the rotating shaft (38), a first belt wheel (74) is fixedly arranged outside the buffer sleeve (73), a second belt wheel is fixedly arranged on a transmission shaft on which a bevel gear (72) is arranged, the first belt wheel (74) and the second belt wheel are connected through a belt, and a buffer structure is arranged between the buffer sleeve (73) and the rotating shaft (38); buffer structure is including seting up a plurality of accommodation hole (75) on cushion collar (73) inner wall, a ball (76) has in accommodation hole (75), lean on through a buffer spring (77) between ball (76) and the accommodation hole (75) diapire and be connected, set up on the outer wall of pivot (38) and accommodate hole (75) one-to-one notch (78), ball (76) can support and lean on in notch (78).

8. The lithium battery top cover pressing machine according to claim 7, wherein the outer end of the positioning column (46) is provided with a limiting protrusion (9).

Images