CN119400975B - A lithium battery diaphragm winding core coating device and use method thereof - Google Patents

Abstract

The invention relates to a lithium battery diaphragm winding core coating device and a use method thereof, and relates to the field of battery manufacturing technology. A plurality of annular knives are used to cut the advancing buffer sheet, and the whole-width cutting by machine is replaced by manual cutting one by one, thereby reducing the occurrence of defective products. After the cutting is completed, two transmission rollers in the same group are used to cooperate with a pressing plate and a lower plate to fix the plurality of buffer sheets after the cutting, thereby ensuring the subsequent qualified rate of double-sided adhesive pasting. The invention can place a cylindrical core on two U-shaped frames of a placing mechanism, and since each U-shaped frame is rotatably mounted with a group of arc-shaped supporting wheels, the core placed on the U-shaped frame can be rotated, so that the buffer sheet can be pasted on the core placed thereon conveniently. When the placing mechanism is moved into a thermoplastic machine, the rotating second synchronous belt drives the corresponding supporting wheel to rotate through a rotating gear, so that each core rotates, so that the thermoplastic film can be heated evenly during the winding process, thereby improving the winding effect.

Description

Lithium battery diaphragm winding core cladding device and application method thereof

Technical Field

The invention relates to the technical field of battery manufacturing, in particular to a wrapping device for a lithium battery diaphragm rolling core and a use method thereof.

Background

The lithium battery winding core is a structural form of a lithium ion battery and is generally composed of a positive electrode, a negative electrode, electrolyte and the like. The process of manufacturing the winding core generally involves coating the positive and negative electrode materials on metal foils and then winding them together in a manner to form a compact battery cell, and in order to protect the winding core, it is necessary to coat the surface of the winding core with a buffer sheet after the winding core is manufactured, and then to cover the winding core with a thermoplastic film, and winding the thermoplastic film to tightly cover the battery.

In the production process of the cylindrical winding core of the lithium battery, the buffer sheets are basically manually sheared into a plurality of buffer sheets, then the buffer sheets are attached to the winding core, and the thermoplastic film is wound by blowing the thermoplastic film by a blower.

However, the prior art has the following technical defects:

1. The buffer sheet width is different, and the straightness accuracy is not good, causes buffer sheet damage simultaneously, increases the risk of foreign matter, and the buffer sheet belongs to flexible material simultaneously, for the straightness accuracy of pasting the double faced adhesive tape, all need to additionally utilize fixing device to fix buffer sheet, just can paste the double faced adhesive tape to it, has increased the application of frock, consumes time.

2. The manual work uses the hair-dryer to blow tightly thermoplastic film and needs to consume a large amount of time, and is inefficiency, can adopt the thermoplastic machine to replace the hair-dryer to tighten up in prior art, for example prior art discloses a packing plant for battery production (publication number: CN 108860816A), but this device can only let the core keep motionless in the device when tightening up the core thermoplastic film, can't rotate the core, can lead to the core to be heated unevenly, and then the situation is tightened up in each position of thermoplastic film differently, can lead to tightening up the failure when serious, leads to reworking, influences production efficiency.

Therefore, on the basis of the prior art, in order to overcome the technical defects, there is still room for improvement.

Disclosure of Invention

In order to solve the problems, in a first aspect, the application provides a wrapping device for a winding core of a lithium battery diaphragm and a use method thereof, which adopts the following technical scheme: the machine comprises a first workbench, wherein a hollow groove is formed in the upper surface of the first workbench, a second workbench is arranged on one side of the first workbench, a case door faces to a thermoplastic machine of the second workbench, and a fixing mechanism is arranged on the upper side of the first workbench.

The fixing mechanism comprises a box body arranged on the upper side of the first workbench, an opening is formed in the upper surface of the box body, two strip-shaped grooves are formed in the upper surface of the box body on the side face of the opening, first U-shaped frames are slidably arranged in the two strip-shaped grooves, a lower plate is arranged between the inner side faces of the first U-shaped frames, two first electric pushing rods are correspondingly arranged on the upper side of the first U-shaped frames, and pressing plates are jointly arranged at the lower ends of the two first electric pushing rods.

Preferably, two second gears are arranged in the box body, a first gear which is concentric with the second gears is arranged in the center of the side face of each second gear, a second rack meshed with each second gear is arranged on one side of each second gear, and two first racks are correspondingly arranged on the inner side face of the first U-shaped frame.

Preferably, the fixing mechanism further comprises two screws rotatably installed between the inner walls of the box body, a first motor with a driving end fixedly connected with the end of the first motor is installed on one side of one screw on the side face of the box body, screw bases fixedly connected with the first U-shaped frames are arranged on each screw, first synchronous wheels are installed on the screws close to the other ends of the screws, and first synchronous belts are arranged on the two first synchronous wheels together.

Preferably, the upper side of the first workbench is provided with a cutting mechanism on one side of the fixing mechanism, the cutting mechanism comprises two groups of mounting plates with lower ends fixedly connected with the first workbench, two driving rollers are correspondingly and rotatably arranged between the two mounting plates, a second motor is arranged on one side of one driving roller of the side surfaces of one mounting plate of each group, and a plurality of evenly distributed annular cutters are arranged on the side surfaces of the upper driving rollers close to the fixing mechanism.

Preferably, the upper side of the box body is provided with a cutting mechanism, the cutting mechanism comprises a second U-shaped frame which is arranged on the upper side of the box body and is positioned on one side of the first U-shaped frame, two second electric push rods are correspondingly arranged on the upper side of the second U-shaped frame, and the telescopic arms of the two second electric push rods penetrate through the second U-shaped frame and are provided with cutters together.

Preferably, the upper side of second workstation corresponds installs two curb plates, curb plate side and thermoplastic built-in portion all are provided with actuating mechanism, actuating mechanism includes four sets of second synchronizing wheels, two sets of second synchronizing wheel rotate and install in the curb plate side, and two other sets of second synchronizing wheel rotate and install at thermoplastic built-in wall, every two sets of second synchronizing wheel all are provided with the second hold-in range that the surface is provided with the tooth on the second synchronizing wheel.

Preferably, one side of one of the second synchronous wheels of each group is provided with a third motor with a driving end fixedly connected with the end of the third motor, two third motors corresponding to the two groups of second U-shaped frames in the thermoplastic machine are fixedly connected with the side surfaces of the thermoplastic machine, and the other two third motors are fixedly connected with the two side plates.

Preferably, a placement mechanism is arranged between the two side plates on the upper side of the second workbench, the placement mechanism comprises a bottom plate, two groups of U-shaped frames are correspondingly arranged on the upper surface of the bottom plate, a group of supporting wheels which are distributed in an arc shape are rotatably arranged on the side surfaces of each U-shaped frame, and one end of each group of supporting wheels at the lowest side penetrates through the bottom plate and is provided with a rotary gear meshed with the second synchronous belt teeth at the same side.

Preferably, the cooling mechanism is arranged right above the second workbench, the cooling mechanism comprises a bracket which is arranged on the side face of the thermoplastic machine and is right above the second workbench, a plurality of evenly distributed transverse pipes are correspondingly arranged on the lower side of the bracket, a plurality of evenly distributed air nozzles which are all downward are arranged on the side face of each transverse pipe, a blower is arranged on the upper surface of the thermoplastic machine, and a multi-way pipe which is communicated with all the transverse pipes is arranged at the output end of the blower.

On the other hand, the application also discloses a using method of the lithium battery diaphragm winding core cladding device, which comprises the following steps:

S1, slitting a buffer sheet, namely sequentially passing the buffer sheet between each group of two driving rollers, and slitting the advancing buffer sheet by using a plurality of annular cutters in the process of conveying the buffer sheet;

s2, fixing the sheet, clamping and fixing the end of the advancing buffer sheet by the pressing plate in cooperation with the lower plate, and then fixing the buffer sheet on the box body by the pressing plate and the lower plate in a moving manner in cooperation with the two driving rollers;

S3, rubberizing and cladding, namely, sticking double-sided adhesive tapes on the upper surfaces of all the buffer sheets fixed on the box body, cutting the double-sided adhesive tapes and the buffer sheets by using a cutting mechanism, and then sticking each cut buffer sheet on a lithium battery roll core;

s4, winding thermoplastic films, namely sleeving the thermoplastic films on the winding cores of each wrapping buffer sheet, putting the winding cores on two U-shaped frames again, and then feeding a placing mechanism into a thermoplastic machine to wind the thermoplastic films on the surfaces of the winding cores on the placing mechanism;

s5, cooling and shaping, namely removing the rolled winding core from the thermoplastic machine, cooling the winding core, and then further blowing and thermoplastic the gap of the buffer sheet coated on the surface of the winding core by using a blower.

In summary, the application comprises at least one of the following beneficial technical effects of the wrapping device for the lithium battery diaphragm winding core and the use method thereof:

1. According to the invention, a plurality of annular cutters are utilized to cut the advancing buffer sheets, the whole cutting of a machine is used for replacing manual cutting one by one, the labor amount of workers is reduced, the occurrence of defective products is reduced, the waste of the buffer sheets is reduced, meanwhile, after the cutting is finished, the plurality of cut buffer sheets are fixed by utilizing the same group of two driving rollers matched with the pressing plate and the lower plate, the qualification rate of the subsequent double-sided adhesive tape is ensured, a fixing tool is not required to be additionally used, and the buffer sheets are fixed in the cutting process, so that the time is not required to be wasted additionally.

2. According to the invention, the cylindrical winding cores can be placed on two U-shaped frames of the placement mechanism, and as each U-shaped frame is rotatably provided with a group of supporting wheels in arc distribution, the winding cores placed on the U-shaped frames can be rotated, so that buffer sheets can be conveniently attached to the winding cores placed on the U-shaped frames, and meanwhile, when the placement mechanism moves into the thermoplastic machine, each rotating gear on the placement mechanism is meshed with the teeth of the second synchronous belt on the same side, and then the rotating second synchronous belt drives the corresponding supporting wheels to rotate through the rotating gears, so that each winding core can be rotated, a thermoplastic film can be heated uniformly in the winding process, the winding effect is improved, and reworking is reduced.

3. According to the invention, the complicated buffer sheet cutting and thermoplastic film blowing operation is automatically operated, the burden of personnel is greatly reduced, the working efficiency and the working quality are improved, the winding core is heated uniformly, the wrinkles and the deformation of the thermoplastic film are reduced, the first U-shaped frame in the fixing mechanism is moved and drives the placing mechanism to move, the linkage between the fixing mechanism and the placing mechanism is enhanced, and the placing mechanism is not required to be moved by an additional driving device.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a second state structure diagram of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a partial structural schematic diagram of the present invention.

Fig. 5 is a schematic structural view of the fixing mechanism of the present invention.

Fig. 6 is a schematic view of the internal structure of the fixing mechanism of the present invention.

Fig. 7 is a schematic view of the internal structure of the fixing mechanism in the second state of the present invention.

Fig. 8 is an enlarged view of a portion a in fig. 7.

Fig. 9 is a schematic structural view of the slitting mechanism of the present invention.

Fig. 10 is a schematic view of the cutting mechanism of the present invention.

Fig. 11 is a schematic view of the cooling mechanism of the present invention.

Fig. 12 is a schematic view of the placement mechanism of the present invention.

Fig. 13 is a schematic view of the driving mechanism of the present invention.

In the figure, 1, a fixing mechanism; 101, a box body; 102, a strip-shaped groove; 103, a screw rod, 104, a first motor, 105, a screw seat, 106, a first synchronous wheel, 107, a first synchronous belt, 108, a first U-shaped frame, 109, a first electric push rod, 110, a pressing plate, 111, a lower plate, 112, a first rack, 113, a side plate, 114, a first gear, 115, a second gear, 116, a second rack, 117, a connecting frame, 118, a supporting plate, 2, a slitting mechanism, 201, a mounting plate, 202, a driving roller, 203, a second motor, 204, a driving gear, 205, a circular knife, 3, a cutting mechanism, 301, a second U-shaped frame, 302, a second electric push rod, 303, a cutter, 4, a placing mechanism, 401, a bottom plate, 402, a U-shaped frame, 403, a supporting wheel, 404, a rotating gear, 405, a pulley, 5, a driving mechanism, 501, a second synchronous wheel, 502, a second synchronous belt, 503, a third motor, 6, a cooling mechanism, 601, a bracket, 602, a cross tube, 603, an air nozzle, 604, a blower, 605, a multi-way tube, 7, a first workbench, 8, a second workbench, 9, a second rack, 11, a sliding groove, 14, a third rack, a sliding frame, a fourth rack, a sliding frame, a 8, a sliding frame, a sliding frames, and a sliding frames.

Detailed Description

Embodiments of the present invention are described in detail below with reference to fig. 1-13.

The embodiment of the application discloses a wrapping device for a lithium battery diaphragm winding core and a use method thereof, wherein manual strip-by-strip cutting is replaced by whole-width cutting of a machine, so that the labor amount of workers is reduced, defective products are reduced, the waste of buffer sheets is reduced, meanwhile, after cutting is finished, a plurality of cut buffer sheets are fixed by using the same group of two driving rollers to be matched with a pressing plate and a lower plate, the qualification rate of subsequent double-sided adhesive tape pasting is ensured, a fixing tool is not required to be additionally used, the buffer sheets are fixed in the cutting process, and additional waste of time is not required.

1-4, Including the first workstation 7 that the upper surface has the empty slot, one side of first workstation 7 is provided with second workstation 8, one side of second workstation 8 is provided with the thermoplastic machine 9 that the machine case door was towards second workstation 8, the machine case door department of thermoplastic machine 9 sets up many plastic strips, first workstation 7 and second workstation 8 are used for installing and placing other mechanisms in the device, thermoplastic machine 9 is used for rolling up the core of covering thermoplastic film, plastic strips can avoid the temperature to scatter and disappear from thermoplastic machine 9 machine case door department.

As shown in fig. 1 to 3 and 5, the upper side of the first table 7 is provided with a fixing mechanism 1, the fixing mechanism 1 includes a case 101 mounted on the upper side of the first table 7, and an opening is opened in the upper surface of the case 101 for movement of the support plate 118 and the lower plate 111.

As shown in fig. 5 to 7, two bar-shaped grooves 102 are correspondingly formed on the upper surface of the case 101 at the side of the opening, a first u-shaped frame 108 is slidably mounted in the two bar-shaped grooves 102, a lower plate 111 sliding in the opening is disposed between the inner side surfaces of the first u-shaped frame 108, and the first u-shaped frame 108 sliding in the two bar-shaped grooves 102 can drive the lower plate 111 to slide in the opening.

As shown in fig. 5-7, two first electric push rods 109 are correspondingly installed on the upper surface of the first U-shaped frame 108, a pressing plate 110 is jointly installed at the lower ends of the two first electric push rods 109, the two first electric push rods 109 extend to drive the pressing plate 110 to approach the lower plate 111, so that an object between the two can be clamped, and then the first electric push rods 109 shorten to drive the pressing plate 110 to rise so as to release the clamping.

As shown in fig. 5-8, two side plates 113 are correspondingly installed on the inner bottom surface of the box 101, a second gear 115 is rotatably installed on the side surface of each side plate 113, a first gear 114 with the same center is installed in the center of the side surface of each second gear 115, two first racks 112 matched with the first gear 114 are correspondingly installed on the inner side surface of the first u-shaped frame 108, the moving first racks 112 can be meshed with the first gears 114 to drive the first racks to rotate, and the rotating first gears 114 can drive the second gears 115 to rotate in the same direction.

As shown in fig. 5-8, a supporting plate 118 is disposed in the opening, a connecting frame 117 fixedly connected with the supporting plate 118 is mounted at the upper end of each second rack 116, a second rack 116 meshed with each second gear 115 is disposed at one side of each second gear 115, the second racks 116 can be driven to move by the rotating second gears 115, and the moving second racks 116 can drive the supporting plate 118 to move through the connecting frame 117.

As shown in fig. 5-8, the fixing mechanism 1 further includes two screws 103 rotatably installed between the inner walls of the case 101, each screw 103 is provided with a screw seat 105 fixedly connected with the first u-shaped frame 108, and the two screws 103 that rotate can drive the two screw seats 105 to move, thereby driving the first u-shaped frame 108 to move.

As shown in fig. 5-8, a first motor 104 with a driving end fixedly connected with the end of one screw 103 is installed on one side of the box 101, first synchronous wheels 106 are installed on the two screws 103 close to the other end, a first synchronous belt 107 is jointly arranged on the two first synchronous wheels 106, the first motor 104 can drive the screw 103 connected with the first motor to rotate, and the rotating screw 103 drives the other screw 103 to rotate in the same direction through the first synchronous wheels 106 and the first synchronous belt 107.

In summary, when the end of the buffer sheet that is going forward reaches between the pressing plate 110 and the lower plate 111, the two first electric push rods 109 extend to drive the pressing plate 110 to approach the pressing plate 110 until all the buffer sheet ends between the two pairs are clamped, then the first motor 104 operates to drive the screw 103 connected with the driving end to rotate, the screw base 105 and the first synchronizing wheel 106 drive the other screw 103 to rotate in the same direction, the two first synchronizing belts 107 are driven to move, the pressing plate 110 and the lower plate 111 are driven to move through the first U-shaped frame 108 and are in a forward state together with the buffer sheet until the screw base 105 reaches the end of the screw 103 to stop moving, the cut buffer sheet can be fixed on the box 101, simultaneously, the moving first U-shaped frame 108 drives the two first racks 112 to be meshed with the two first gears 114 and then can drive the two first racks to rotate, the rotating first gears 114 can drive the second gears 115 to rotate in the same direction, the rotating second gears 115 can drive the second racks 116 to ascend, the moving second racks 116 can drive the supporting plate 118 to ascend through the connecting frame 117 to support the buffer sheet above the box body 101, the subsequent double faced adhesive tape pasting is convenient, and when the threaded seat 105 moves reversely, the two first racks 112 are driven to move reversely, the second racks 116 are driven to descend, the supporting plate 118 is driven to descend, and the supporting plate 118 is prevented from being positioned in the opening to influence the movement of the lower plate 111.

As shown in fig. 1-3 and 9, a slitting mechanism 2 is arranged on one side of a fixing mechanism 1 on the upper side of a first workbench 7, the slitting mechanism 2 comprises two groups of mounting plates 201 with lower ends fixedly connected with the first workbench 7, two driving rollers 202 are correspondingly and rotatably arranged between each group of two mounting plates 201, a buffer sheet sequentially passes through between each group of two driving rollers 202, and then the buffer sheet can be driven to advance when each group of two driving rollers 202 rotate in opposite directions.

As shown in fig. 9, one end of each group of two driving rollers 202 penetrates through the mounting plate 201 and is provided with a transmission gear 204 meshed with each other, a second motor 203 is arranged on one side of one driving roller 202 of each group of mounting plate 201, the driving end of each second motor 203 is fixedly connected with the end of the alignment mounting plate 201, a plurality of evenly distributed annular cutters 205 are arranged on the side of the driving roller 202 above the fixing mechanism 1, each running second motor 203 can drive the driving roller 202 connected with the second motor to rotate, then the driving rollers 204 drive the other driving rollers 202 of the same group to reversely rotate, and the advancing buffer sheet can be cut into a plurality of buffer sheets with the same width by using the annular cutters 205.

In summary, the buffer sheet sequentially passes through between each group of two driving rollers 202, each running second motor 203 can drive the driving roller 202 connected with the second motor to rotate, and then the two driving gears 204 drive the other driving roller 202 in the same group to rotate reversely, so that each group of two driving rollers 202 rotate oppositely, the buffer sheet can be driven to advance, and the advancing buffer sheet can be cut into a plurality of buffer sheets with the same width by using the annular knife 205.

As shown in fig. 1-3 and 10, a cutting mechanism 3 is disposed on the upper side of the case 101, the cutting mechanism 3 includes a second u-shaped frame 301 installed on the upper side of the case 101 and located at one side of the first u-shaped frame 108, two second electric pushing rods 302 are correspondingly installed on the upper side of the second u-shaped frame 301, telescopic arms of the two second electric pushing rods 302 penetrate through the second u-shaped frame 301 and are jointly installed with a cutter 303, and after a double faced adhesive tape is attached to a buffer sheet fixed on the case 101, the second electric pushing rods 302 stretch to drive the cutter 303 to descend to cut all the buffer sheet, so that the buffer sheet is separated from the buffer sheet.

As shown in fig. 1-3 and 13, two side plates 24 are correspondingly installed on the upper side of the second workbench 8, driving mechanisms 5 are respectively arranged on the side surfaces of the side plates 24 and the inside of the thermoplastic machine 9, each driving mechanism 5 comprises four groups of second synchronizing wheels 501, two groups of second synchronizing wheels 501 are rotatably installed on the side surfaces of the side plates 24, the other two groups of second synchronizing wheels 501 are rotatably installed on the inner wall of the thermoplastic machine 9, second synchronizing belts 502 with teeth on the outer surfaces are respectively arranged on each group of two second synchronizing wheels 501, and the second synchronizing wheels 501 can drive the second synchronizing belts 502 to rotate.

As shown in fig. 1-3 and 13, one side of each group of one second synchronous wheel 501 is provided with a third motor 503 whose driving end is fixedly connected with the end, two third motors 503 corresponding to two groups of second u-shaped frames 301 in the thermoplastic machine 9 are fixedly connected with the side surface of the thermoplastic machine 9, the other two third motors 503 are fixedly connected with two side plates 24, and the running third motor 503 can drive the second synchronous wheel 501 connected with the third motors to rotate.

As shown in fig. 1-3 and 12, a placement mechanism 4 is disposed between two side plates 24 on the upper side of the second workbench 8, the placement mechanism 4 includes a bottom plate 401, two sets of U-shaped frames 402 are correspondingly mounted on the upper surface of the bottom plate 401, and a winding core can be placed on each aligned two U-shaped frames 402.

As shown in fig. 12, a set of supporting wheels 403 in arc distribution are rotatably installed on the side surface of each U-shaped frame 402, one end of each set of supporting wheels 403 at the lowest position penetrates through the bottom plate 401 and is provided with a rotating gear 404 meshed with the teeth of the second synchronous belt 502 at the same side, when a winding core is placed on two U-shaped frames 402, the winding core is supported by using the two sets of supporting wheels 403, a worker can rotate the winding core at will, a buffer sheet is conveniently attached to the winding core, the rotating gear 404 meshed with the second synchronous belt 502 is driven to rotate by the rotating second synchronous belt 502, and then the corresponding supporting wheel 403 is driven to rotate, so that the winding core can be driven to rotate.

To sum up, the winding cores are placed on the two U-shaped frames 402, the two groups of supporting wheels 403 are utilized to support the winding cores, a worker can rotate the winding cores at will to attach buffer sheets conveniently, the rotating second synchronous belt 502 drives the rotating gears 404 meshed with the rotating second synchronous belt to rotate, and then the corresponding supporting wheels 403 are driven to rotate, so that the winding cores placed on the two groups of supporting wheels 403 can be driven to rotate.

As shown in fig. 1-3 and 11, a cooling mechanism 6 is arranged right above the second workbench 8, the cooling mechanism 6 comprises a bracket 601 which is arranged on the side face of the thermoplastic machine 9 and is right above the second workbench 8, a plurality of evenly-distributed transverse pipes 602 are correspondingly arranged on the lower side of the bracket 601, a plurality of evenly-distributed air nozzles 603 which are all downward are arranged on the side face of each transverse pipe 602, and air in the transverse pipes 602 can be discharged from each air nozzle 603.

As shown in fig. 1 to 3 and 11, a blower 604 is mounted on the upper surface of the thermoplastic machine 9, and a multi-way pipe 605 communicating with all the cross pipes 602 is mounted at the output end of the blower 604, and the blower 604 is operated to feed air into each cross pipe 602 through the multi-way pipe 605.

In the second embodiment, as shown in fig. 3, on the basis of the first embodiment, two cylinders 21 are correspondingly installed below the supporting plate 118 on the inner bottom surface of the box body 101, a round rod 22 with the upper end fixedly connected with the supporting plate 118 is slidably arranged in each cylinder 21, the lower end of each round rod 22 extends to the outside of the box body 101 and is provided with a limiting rod 23, the supporting plate 118 can be supported by using the two cylinders 21, and when the supporting plate 118 ascends, the round rod 22 and the limiting rod 23 are also driven to ascend, and the supporting plate 118 can be limited by using the limiting rod 23.

As shown in fig. 4 and 12, two wheel grooves 10 are correspondingly formed on the upper surface of the second workbench 8 and the inner bottom surface of the thermoplastic machine 9, two groups of pulleys 405 sliding in the two wheel grooves 10 are correspondingly mounted on the lower surface of the bottom plate 401, and when the bottom plate 401 moves, all the pulleys 405 can be driven to slide in the two wheel grooves 10, so that the bottom plate 401 is convenient to move.

As shown in fig. 3, a chute 11 is formed in the center of the upper surface of the second workbench 8, a first slide bar 12 is installed in the chute 11, a first slide block 13 fixedly connected with the bottom plate 401 is slidably arranged on the first slide bar 12, and the first slide block 13 sliding on the first slide bar 12 can drive the bottom plate 401 to move.

As shown in fig. 3, a fixing frame 14 is installed on the side surface of the first U-shaped frame 108, a rectangular plate is installed on the lower side of the second workbench 8, a third gear 16 is installed on the side surface of the rectangular plate in a rotating manner, a third rack 15 which is arranged below the third gear 16 and is meshed with the third gear 16 is installed on the lower side of the fixing frame 14, a fourth rack 17 which is arranged above the third gear 16 and is meshed with the third rack 17 is installed on the lower side of the first slider 13, the moving fixing frame 14 can drive the third gear 16 meshed with the third rack to rotate through the third rack 15, and the rotating third gear 16 can drive the fourth rack 17 to move so as to drive the first slider 13 to move.

As shown in fig. 3, two third U-shaped frames 18 are correspondingly installed on the lower sides of the second workbench 8 and the thermoplastic machine 9, a second sliding rod 19 is installed between the two third U-shaped frames 18, a second sliding block 20 fixedly connected with a third rack 15 is arranged on the second sliding rod 19 in a sliding manner, and the moving third rack 15 can drive the second sliding block 20 to slide on the second sliding rod 19, so that the stability of the third rack 15 during moving is enhanced.

In summary, when the fixing frame 14 moves reversely to the thermoplastic machine 9, the moving fixing frame 14 drives the third rack 15 to move and drive the third gear 16 to rotate, the rotating third gear 16 drives the fourth rack 17 to move reversely, the moving fourth rack 17 moves out the placement mechanism 4 in the thermoplastic machine 9 through the first sliding block 13, and when the fixing frame 14 moves to the cutting mechanism 3, the moving fourth rack 17 is also driven to move to the thermoplastic machine 9, and then the moving fourth rack 17 sends the placement mechanism 4 into the thermoplastic machine 9 again through the first sliding block 13.

The application also discloses a use method of the lithium battery diaphragm winding core cladding device, which comprises the following steps:

S1, slitting a buffer sheet, wherein the buffer sheet sequentially passes through between each group of two driving rollers 202, in the process of conveying the buffer sheet, a plurality of annular cutters 205 are utilized to slit the advancing buffer sheet, specifically, the buffer sheet passes through between the two driving rollers 202 without the annular cutters 205, then passes through between the other group of driving rollers 202, then two second motors 203 operate to drive the two driving rollers 202 fixedly connected with the driving ends of the buffer sheet to rotate, meanwhile, each rotating driving roller 202 drives the other driving rollers 202 in the same group to rotate reversely through corresponding two mutually meshed driving gears 204, so that the two driving rollers 202 in the same group rotate oppositely to convey the buffer sheet between the two driving rollers, meanwhile, the two driving rollers 202 can clamp the buffer sheet between the two driving rollers, the offset of the buffer sheet is avoided, the slitting effect is ensured, the driving rollers 202 with the annular cutters 205 can drive each annular cutter 205 to rotate when rotating, and slit the passing buffer sheet into a plurality of buffer sheets with the same width for coating a subsequent lithium battery cell.

S2, fixing the sheet, wherein the pressing plate 110 is matched with the lower plate 111 to clamp and fix the end of the advancing buffer sheet, then the pressing plate 110 and the lower plate 111 are moved to be matched with the two driving rollers 202 to fix the buffer sheet on the box 101, specifically, when the end of the buffer sheet which is continuously advanced reaches between the pressing plate 110 and the lower plate 111, the two first electric push rods 109 stretch to drive the pressing plate 110 to approach the pressing plate 110 until all the end of the buffer sheet between the two pairs is clamped, then the first motor 104 operates to drive the screw 103 connected with the driving end of the pressing plate to rotate, the screw seat 105 and the first synchronous wheel 106 drive the other screw 103 to rotate in the same direction, the two first synchronous belts 107 are driven to move, and then the pressing plate 110 and the lower plate 111 are driven to move together with the buffer sheet through the first U-shaped frame 108 until the screw 103 end stops moving, so that the cut buffer sheet can be fixed on the box 101.

S3, pasting and coating, namely pasting double-sided tapes on the upper surfaces of all buffer sheets fixed on the box body 101, cutting the upper surfaces and the buffer sheets by using the cutting mechanism 3, pasting each cut buffer sheet on a lithium battery winding core, specifically pasting double-sided tapes used for coating the lithium battery winding core on the area, between the lower plate 111 and the cutter 303, of the upper surface of each buffer sheet on the box body 101 by staff, after pasting, stretching the two second electric push rods 302 to drive the cutter 303 to descend so as to cut all the buffer sheets, cutting the buffer sheets from the buffer sheets, respectively placing a plurality of winding cores on the two U-shaped frames 402 by staff, pasting the buffer sheets on the winding cores according to a specified interval, coating the winding cores, supporting the winding cores by using a plurality of supporting wheels 403, and enabling the staff to rotate the winding cores at will so as to conveniently paste the buffer sheets on the winding cores.

S4, thermoplastic film winding, the winding core of each coating buffer sheet is sleeved with a thermoplastic film and then is placed on two U-shaped frames 402 again, then the placing mechanism 4 is sent into the thermoplastic machine 9 to wind each winding core surface thermoplastic film on the placing mechanism 4, specifically, the winding core of each coating buffer sheet is sleeved with a thermoplastic film and then is placed on two U-shaped frames 402 again, then the first motor 104 drives the screw 103 to rotate reversely, the screw thread seat 105 is driven to move reversely, the first U-shaped frames 108 are driven to move towards the cutting mechanism 3, meanwhile, the fixing frame 14 drives the third rack 15 to move, the moving third rack 15 drives the fourth rack 17 to move reversely through the third gear 16, the first sliding block 13 is driven to slide on the first sliding rod 12 and simultaneously sends the placing mechanism 4 into the thermoplastic machine 9 from the machine door, meanwhile, each rotary gear 404 is meshed with the second synchronous belt 502 on the same side, the high temperature thermoplastic film on the winding core surface is used for winding, simultaneously, the two third motors 503 on the side of the thermoplastic machine 9 drive the two second synchronous belts to move reversely, the first U-shaped frames are driven to rotate, the corresponding winding core 404 is driven to rotate, and the winding core 404 can be driven to rotate uniformly, and the winding effect can be improved due to the fact that the two rotating synchronous belts are driven to rotate, and the winding core 404 can be wound uniformly.

S5, cooling and shaping, the coiled winding core is moved out of the thermoplastic machine 9 and cooled, then the buffer sheet gap covered by the surface of the winding core is further blown and thermoplastic by using a blower, specifically, the buffer sheet is continuously cut and fixed according to S1 and S2, the moving first U-shaped frame 108 drives the third rack 15 to move through the fixing frame 14, the moving third rack 15 drives the fourth rack 17 to reversely move through the third gear 16, the moving fourth rack 17 moves the placing mechanism 4 back to the second workbench 8 from the thermoplastic machine 9 through the first sliding block 13, each rotating gear 404 on the placing mechanism 4 is meshed with two second synchronous belts 502 on the outer side of the thermoplastic machine 9, then the two second synchronous belts 502 are driven by the two third motors 503 on the outer side to rotate, and then the corresponding supporting wheels 403 are driven to rotate by each rotating gear 404, all winding cores are enabled to rotate, simultaneously, the air is injected into each transverse tube 602 through the air blower 604, finally, all air is sprayed to the winding core through each air nozzle 603, the surrounding air is accelerated, the winding core is reinforced, after the winding core is cooled, the buffer sheet is cooled down, and then the surface of the winding core is further cooled, and the buffer sheet is cooled, and the working gap is shrunk, and all the winding cores can be further cooled, and coiled.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the embodiments are to be considered in all respects as illustrative and not restrictive.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (8)

1. The utility model provides a lithium battery diaphragm rolling core cladding device, includes the first workstation of upper surface offer the empty slot, and one side of first workstation is provided with the second workstation, and one side of second workstation is provided with the thermoplastic machine of machine case door orientation second workstation, its characterized in that, the upside of first workstation is provided with fixed establishment;

The fixing mechanism comprises a box body arranged on the upper side of the first workbench, an opening is formed in the upper surface of the box body, two strip-shaped grooves are formed in the upper surface of the box body on the side face of the opening, first U-shaped frames are slidably arranged in the two strip-shaped grooves, a lower plate is arranged between the inner side faces of the first U-shaped frames, two first electric push rods are correspondingly arranged on the upper side of the first U-shaped frames, and a pressing plate is jointly arranged at the lower ends of the two first electric push rods;

The fixing mechanism further comprises two screws rotatably arranged between the inner walls of the box body, a first motor with a driving end fixedly connected with the end of one screw is arranged on one side of the box body, a thread seat fixedly connected with the first U-shaped frame is arranged on each screw, first synchronous wheels are arranged on the two screws close to the other end of the two screws, and first synchronous belts are arranged on the two first synchronous wheels together;

the upper side of the first workbench is provided with a slitting mechanism on one side of the fixing mechanism, the slitting mechanism comprises two groups of mounting plates with lower ends fixedly connected with the first workbench, two driving rollers are correspondingly and rotatably arranged between each group of two mounting plates, a second motor is arranged on one side of one driving roller of the side faces of each group of mounting plates, and a plurality of evenly distributed annular cutters are arranged on the side face of the upper driving roller close to the fixing mechanism.

2. The lithium battery diaphragm winding core cladding device of claim 1, wherein two second gears are arranged in the box body, a first gear which is concentric with the second gears is arranged in the center of the side face of each second gear, a second rack meshed with each second gear is arranged on one side of each second gear, and two first racks are correspondingly arranged on the inner side face of the first U-shaped frame.

3. The lithium battery diaphragm winding core cladding device of claim 2, wherein the upper side of the box body is provided with a cutting mechanism, the cutting mechanism comprises a second U-shaped frame which is arranged on the upper side of the box body and is positioned on one side of the first U-shaped frame, two second electric push rods are correspondingly arranged on the upper side of the second U-shaped frame, and telescopic arms of the two second electric push rods penetrate through the second U-shaped frame and are jointly provided with a cutter.

4. The lithium battery diaphragm winding core cladding device according to claim 3, wherein the upper side of the second workbench is correspondingly provided with two side plates, the side surfaces of the side plates and the inside of the thermoplastic machine are respectively provided with a driving mechanism, the driving mechanism comprises four groups of second synchronous wheels, the two groups of second synchronous wheels are rotatably arranged on the side surfaces of the side plates, the other two groups of second synchronous wheels are rotatably arranged on the inner wall of the thermoplastic machine, and each group of two second synchronous wheels is provided with a second synchronous belt with teeth on the outer surface.

5. The lithium battery diaphragm winding core cladding device of claim 4, wherein one side of each group of one second synchronous wheel is provided with a third motor with a driving end fixedly connected with the end of the driving end, two third motors corresponding to two groups of second U-shaped frames in the thermoplastic machine are fixedly connected with the side surfaces of the thermoplastic machine, and the other two third motors are fixedly connected with the two side plates.

6. The lithium battery diaphragm winding core cladding device according to claim 5, wherein a placing mechanism is arranged between the two side plates on the upper side of the second workbench, the placing mechanism comprises a bottom plate, two groups of U-shaped frames are correspondingly arranged on the upper surface of the bottom plate, a group of supporting wheels distributed in an arc shape are rotatably arranged on the side face of each U-shaped frame, and one end of each bottommost supporting wheel penetrates through the bottom plate and is provided with a rotary gear meshed with the second synchronous belt teeth on the same side.

7. The lithium battery diaphragm winding core cladding device of claim 6, wherein a cooling mechanism is arranged right above the second workbench, the cooling mechanism comprises a bracket which is arranged on the side surface of the thermoplastic machine and is right above the second workbench, a plurality of evenly-distributed transverse pipes are correspondingly arranged on the lower side of the bracket, a plurality of evenly-distributed air nozzles which are all downward are arranged on the side surface of each transverse pipe, a blower is arranged on the upper surface of the thermoplastic machine, and a multi-way pipe which is communicated with all the transverse pipes is arranged at the output end of the blower.

8. A use method of a lithium battery diaphragm winding core cladding device, a lithium battery separator winding core cladding apparatus comprising the separator winding core of claim 7, wherein: the method comprises the following steps:

S1, slitting a buffer sheet, namely sequentially passing the buffer sheet between each group of two driving rollers, and slitting the advancing buffer sheet by using a plurality of annular cutters in the process of conveying the buffer sheet;

s2, fixing the sheet, clamping and fixing the end of the advancing buffer sheet by the pressing plate in cooperation with the lower plate, and then fixing the buffer sheet on the box body by the pressing plate and the lower plate in a moving manner in cooperation with the two driving rollers;

S3, rubberizing and cladding, namely, sticking double-sided adhesive tapes on the upper surfaces of all the buffer sheets fixed on the box body, cutting the double-sided adhesive tapes and the buffer sheets by using a cutting mechanism, and then sticking each cut buffer sheet on a lithium battery roll core;

s4, winding thermoplastic films, namely sleeving the thermoplastic films on the winding cores of each wrapping buffer sheet, putting the winding cores on two U-shaped frames again, and then feeding a placing mechanism into a thermoplastic machine to wind the thermoplastic films on the surfaces of the winding cores on the placing mechanism;

S5, cooling and shaping, namely removing the rolled winding core from the thermoplastic machine, cooling the winding core, and then blowing and thermoplastic the gap of the buffer sheet coated on the surface of the winding core by using a blower.