CN213529449U

CN213529449U - Coating device for lithium ion battery diaphragm

Info

Publication number: CN213529449U
Application number: CN202022001480.7U
Authority: CN
Inventors: 童高鹏; 杨建青
Original assignee: Zhejiang Industry Polytechnic College
Current assignee: Zhejiang Industry Polytechnic College
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-06-25
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a coating unit for lithium ion battery diaphragm, its characterized in that: the machine frame comprises a vertical plate, a top plate and a supporting plate which are vertically arranged on the vertical plate, and a plurality of guide rollers used for guiding the conveying direction of the diaphragm are arranged on the vertical plate. The utility model discloses simple structure, convenient to use, degree of automation is higher, can accelerate the coating speed of diaphragm.

Description

Coating device for lithium ion battery diaphragm

Technical Field

The utility model relates to a lithium battery diaphragm coating technical field, concretely relates to coating unit for lithium ion battery diaphragm.

Background

The lithium ion battery has the advantages of high specific energy, long cycle life, good safety performance, environmental friendliness, no memory effect and the like, and is widely and rapidly applied in various fields and the like. The basic function of a battery separator in a lithium battery is to separate the positive and negative electrodes and to adsorb electrolyte to allow lithium ions to pass through. The existing battery diaphragm is frequently required to be stopped in the coating process so as to replace a wind-up roll and a wind-down roll, so that the coating process is continuously interrupted, the continuous operation cannot be realized, and the coating efficiency is low.

Disclosure of Invention

An object of the utility model is to overcome prior art's not enough, provide a coating unit for lithium ion battery diaphragm.

In order to achieve the above object, the present invention provides the following technical solutions:

a coating device for a lithium ion battery separator, characterized in that: the film coating machine comprises a rack, wherein an unwinding mechanism, a swinging mechanism, a cleaning mechanism, a coating mechanism, a drying mechanism, a winding mechanism and a cutting mechanism are arranged on the rack according to the advancing direction of a film, the rack comprises a vertical plate, a top plate and a supporting plate which are vertically arranged on the vertical plate, a plurality of guide rollers for guiding the conveying direction of the film are arranged on the vertical plate, each guide roller comprises a first fixing plate and a second fixing plate which are fixed on the vertical plate, the front end of each first fixing plate is connected with a first fixing rod, the front end of each first fixing rod is connected with a fixing arm, the middle position of each second fixing plate is fixedly provided with a supporting arm, the front end and the rear end of each supporting arm are respectively connected;

the unwinding mechanism comprises a rotary rod and a support rod, the rotary rod is fixed on a vertical plate, two mounting plates are rotatably arranged on the rotary rod, two connecting rods are connected between the two mounting plates, a hinge rod is connected on the mounting plate on the outer side of the rotary rod, a rotary cylinder is hinged to the outer end of the support rod, a rotary cylinder piston rod is arranged in the rotary cylinder, the upper end of the rotary cylinder piston rod is hinged to the hinge rod, and two unwinding rollers are rotatably arranged between the two mounting plates;

the swing mechanism comprises a swing frame fixed on a vertical plate, a swing shaft is rotatably arranged in the swing frame, two swing rods are fixedly arranged on the swing shaft, a guide roller is rotatably arranged between the lower parts of the two swing rods, the inner end of the swing shaft penetrates through the vertical plate and is connected with a driven bevel gear, a swing motor is arranged on the rear side of the vertical plate and is in driving connection with a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear;

the coating mechanism comprises a supporting block arranged on a supporting plate, an elevating block is arranged on the supporting block in a sliding manner, an elevating cylinder is arranged below the elevating block, the upper end of a piston rod of the elevating cylinder is connected with the bottom of the elevating block, a smooth roller is arranged on the elevating block in a rotating manner, a sliding rail is arranged on the upper portion of a top plate, a sliding block is arranged on the sliding rail in a sliding manner, a second lead screw motor is fixedly arranged on the sliding block, a second lead screw is connected with the second lead screw through the driving of the second lead screw motor, the second lead screw penetrates through the top plate, the lower end of the second lead screw is connected with a rotating seat in a rotating manner, the lower portion of the rotating seat is connected with a coating frame, a second guide rod is connected with the lower portion of the top plate, guide blocks are connected with two coating roller mounting blocks on two sides of the coating frame, a coating roller is arranged, an adjusting cylinder is arranged at the upper part of the coating roller mounting block, a first fixed block is arranged at the upper part of the comma roller mounting block, the right end of a piston rod of the adjusting cylinder is connected with the first fixed block, the left end of the comma roller mounting block is connected with a plurality of third guide rods, the left ends of the third guide rods extend into the coating roller mounting block, the right end of the coating roller mounting block is connected with a supporting sheet, and the right end of the supporting sheet extends into the comma roller mounting block;

the cutting mechanism comprises a cutting cylinder fixed on the vertical plate, and the upper end of a piston rod of the cutting cylinder is connected with a cutter;

a rotary notch is arranged at the position corresponding to the winding mechanism on the vertical plate, the winding mechanism comprises a first rotary support and a second rotary support, a first rotary plate and a second rotary plate are respectively arranged on the first rotary support and the second rotary support in a rotating manner, two rotary seats are arranged on the first rotary plate in a rotating manner, a rotary motor is arranged at the front side of the second rotary support and drives the second rotary plate to rotate, a third screw motor is arranged at the rear side of the second rotary plate and is in driving connection with a third screw, a motor fixing frame is in threaded connection with the third screw, a winding motor is arranged on the motor fixing frame and is in driving connection with a winding roller through a coupler, a winding notch is arranged on the winding roller along the length direction of the winding roller, a through hole for the winding roller to pass through is arranged on the second rotary plate, and a fixing groove is arranged at the position of the winding, and a fixed cylinder is installed at the bottom of the fixed groove, and a piston rod of the fixed cylinder is connected with a second fixed block.

Preferably, two guide rollers and a tension roller mechanism are arranged between the drying mechanism and the cutting mechanism, and the tension roller mechanism is positioned between the two guide rollers.

Preferably, the left end and the right end of the mounting plate are both provided with positioning notches, a positioning screw is arranged in the positioning notch of the mounting plate at the outer side, the inner end of the positioning screw is fixedly connected with a bearing seat, the outer end of the positioning screw is in threaded connection with a positioning nut, a positioning rod is arranged in the positioning notch of the mounting plate at the inner side, the outer end of the positioning rod is connected with a limiting block, the inner end of the positioning rod is fixedly connected with a bearing seat, the unwinding roller comprises an unwinding roller shaft and an unwinding roller body fixedly arranged on the unwinding roller shaft, the two ends of the unwinding roller shaft are respectively and correspondingly arranged in the bearing seats at the two sides, the positions of the mounting plate at the upper part and the lower part of the positioning notch at the inner side are respectively provided with a positioning hole and a fixing hole, the bottom surface and the fixed orifices intercommunication of location window, the locating pin outside is equipped with the location and marks, and locating lever periphery symmetry is equipped with two constant head tanks.

Preferably, the periphery of the through hole is provided with a guide notch, and the periphery of the winding motor is provided with a guide strip matched with the guide notch.

The utility model discloses beneficial effect is in: two unwinding rollers are arranged, wherein in the unwinding process of one of the two unwinding rollers, the other one can be replaced to be in a preparation state, and the two unwinding rollers can be directly alternated when needed without stopping the machine; two winding rollers are arranged, one winding roller is rotated to the other side to perform falling treatment on the diaphragm after the winding is completed, and the other winding roller is empty and is rotated to the winding position to continue winding the diaphragm.

Drawings

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

fig. 2 is a side view of the present invention;

fig. 3 is a schematic view of a partial structure of the unwinding mechanism of the present invention;

fig. 4 is a rear view of the unwinding mechanism of the present invention;

FIG. 5 is an enlarged schematic view at A of FIG. 4;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is a schematic structural view of a coating mechanism according to the present invention;

FIG. 8 is a partial schematic view of a coating mechanism according to the present invention;

fig. 9 is a schematic structural view of the winding mechanism of the present invention;

FIG. 10 is an enlarged schematic view at A of FIG. 9;

fig. 11 is a partial schematic view of the winding mechanism of the present invention;

fig. 12 is a schematic structural view of the guide roller according to the present invention.

Reference numerals: 1. a frame; 11. a vertical plate; 12. a top plate; 13. a support plate; 14. rotating the notch; 15. A guide roller; 1501. a first fixing plate; 1502. a first fixing lever; 1503. a fixed arm; 1504. a second fixing plate; 1505. a support arm; 1506. a front end plate; 1507. a rear end plate; 1508. a rotating roller;

2. an unwinding mechanism; 201. rotating the rod; 202. mounting a plate; 2021. positioning the notch; 2022. positioning holes; 2023. a spring; 2024. positioning pins; 2025. positioning and marking; 2026. positioning the window; 2027. a fixing hole; 203. a support bar; 204. a rotating cylinder; 205. rotating a cylinder piston rod; 206. a hinged lever; 207. A connecting rod; 208. unwinding rollers; 2081. unwinding the roller body; 2082. a unwinding roller shaft; 209. a limiting block; 2010. positioning a rod; 2011. a bearing seat; 2012. positioning a screw rod; 2013. positioning a nut; 2014. positioning a groove; 2015. a set screw;

3. a swing mechanism; 301. a swing frame; 302. a swing lever; 303. a guide roller; 304. a swing motor; 305. a drive bevel gear; 306. a driven bevel gear;

4. a cutting mechanism; 401. cutting off the air cylinder; 402. a cutter;

5. a cleaning mechanism; 6. a tension roller mechanism;

7. a coating mechanism; 701. a support block; 702. a lifting block; 703. a smoothing roller; 704. a lifting cylinder; 705. A coating frame; 706. a coating roll mounting block; 707. a coating roll; 708. a comma roller mounting block; 709. a comma roller; 7010. a slurry tank; 7011. a guide block; 7012. a second guide bar; 7013. a slide rail; 7014. a slider; 7015. a second lead screw motor; 7016. a second lead screw; 7017. a rotating seat; 7018. an adjusting cylinder; 7019. a first fixed block; 7020. a third guide bar; 7021. a support sheet;

8. a drying mechanism;

9. a winding mechanism; 901. a first rotating bracket; 902. a first rotating plate; 903. a rotating base; 904. a second rotating bracket; 905. a rotating electric machine; 906. a second rotating plate; 907. a through hole; 908. a third screw motor; 909. a third screw rod; 9010. a motor fixing frame; 9011. a winding motor; 9012. a coupling; 9013. A wind-up roll; 9014. winding a notch; 9015. a guide notch; 9016. a guide strip; 9017. fixing grooves; 9018. fixing the air cylinder; 9019. and a second fixing block.

Detailed Description

Embodiments of the present invention are described in detail below with reference to fig. 1-12.

The utility model provides a coating unit for lithium ion battery diaphragm, includes frame 1, is equipped with unwinding mechanism 2, swing mechanism 3, clean mechanism 5, coating mechanism 7, stoving mechanism 8, shutdown mechanism 4 and winding mechanism 9 according to the direction of advance of diaphragm in frame 1, and frame 1 includes riser 11, installs roof 12 and backup pad 13 on riser 11 perpendicularly, is equipped with a plurality of guide roll 15 that is used for guiding diaphragm direction of delivery on riser 11. The guide roller 15 comprises a first fixing plate 1501 and a second fixing plate 1504 fixed on the vertical plate 11, the front end of the first fixing plate 1501 is connected with a first fixing rod 1502, the front end of the first fixing rod 1502 is connected with a fixing arm 1503, a supporting arm 1505 is fixedly arranged at the middle position of the second fixing plate 1504, the front end and the rear end of the supporting arm 1505 are respectively connected with a front end plate 1506 and a rear end plate 1507, the supporting arm 1505 penetrates through the fixing arm 1503, and a rotating roller 1508 is rotatably arranged between the front end plate 1506 and the rear end plate 1507.

The unreeling mechanism 2 comprises a rotating rod 201 and a supporting rod 203 fixed on a vertical plate 11, two mounting plates 202 are rotatably arranged on the rotating rod 201, two connecting rods 207 are connected between the two mounting plates 202, an articulated rod 206 is connected on the mounting plate 202 on the outer side, a rotating cylinder 204 is articulated at the outer end of the supporting rod 203, a rotating cylinder piston rod 205 is arranged in the rotating cylinder 204, the upper end of the rotating cylinder piston rod 205 is articulated with the articulated rod 206, two unreeling rollers 208 are rotatably arranged between the two mounting plates 202, the rotating cylinder 204 controls the extension and retraction of the rotating cylinder piston rod 205, the mounting plate 202 on the outer side is driven to rotate by the articulated rod 206, the mounting plate 202 on the outer side drives the mounting plate 202 on the inner side to synchronously rotate by the connecting rod 207, so that the angle of the mounting plates 202 is changed, one unreel, the convenient dismouting of carrying on it is changed. Set up two unreel roller 208, when one unreels, another can assemble in advance, unreel the back completely at the diaphragm on the roller 208 of unreeling, can continue immediately, reduced the time of change, need not to shut down moreover, improved the whole efficiency of production.

The swing mechanism 3 comprises a swing frame 301 fixed on a vertical plate 11, a swing shaft is rotatably arranged in the swing frame 301, two swing rods 302 are fixedly mounted on the swing shaft, a guide roller 303 is rotatably arranged between the lower parts of the two swing rods 302, the inner end of the swing shaft penetrates through the vertical plate 11 and is connected with a driven bevel gear 306, a swing motor 304 is arranged on the rear side of the vertical plate 11, the swing motor 304 is in driving connection with a drive bevel gear 305, and the drive bevel gear 305 is meshed with the driven bevel gear 306. The swing motor 304 drives the drive bevel gear 305 to rotate, and then drives the swing shaft to rotate through the driven bevel gear 306, and then rotates through the swing lever 302 to adjust the position of the guide roller 303. The guide roller 303 is adjusted back and forth between two positions, which correspond to the situation when the two unwinding rollers 208 are located above the unwinding diaphragm, respectively, so as to guide the diaphragm to advance in a designated direction.

The coating mechanism 7 comprises a supporting block 701 arranged on the supporting plate 13, a lifting block 702 is arranged on the supporting block 701 in a sliding mode, a lifting cylinder 704 is arranged below the lifting block 702, the upper end of a piston rod of the lifting cylinder 704 is connected with the bottom of the lifting block 702, a smooth roller 703 is arranged on the lifting block 702 in a rotating mode, the piston rod of the smooth roller 703 is controlled to stretch through the lifting cylinder 704, and the height of the smooth roller 703 can be adjusted. A slide rail 7013 is arranged on the upper part of the top plate 12, a slide block 7014 is arranged on the slide rail 7013 in a sliding manner, a second lead screw motor 7015 is fixedly arranged on the slide block 7014, a second lead screw 7016 is connected with the second lead screw motor 7015 in a driving manner, the second lead screw 7016 penetrates through the top plate 12 and is rotatably connected with a rotating seat 7017 at the lower end thereof, a coating rack 705 is connected with the lower part of the rotating seat 7017, a second guide rod 7012 is connected with the lower part of the top plate 12, guide blocks 7011 are connected with both sides of the coating rack 705, a second guide rod 7012 penetrates through the guide block 7011, two coating roller mounting blocks 706 are connected with the lower part of the coating rack 705, a coating roller 707 is rotatably arranged between the two coating roller mounting blocks 706 at the front side and the rear side, a comma roller mounting block 708 is arranged on the right side of the mounting block 706, a comma roller 709 is fixedly arranged between the two comma roller, the right end of a piston rod of the adjusting cylinder 7018 is connected with a first fixed block 7019, the left end of the comma roller mounting block 708 is connected with a plurality of third guide rods 7020, the left end of each third guide rod 7020 extends into the interior of the coating roller mounting block 706, the right end of the coating roller mounting block 706 is connected with a support sheet 7021, the right end of the support sheet 7021 extends into the interior of the comma roller mounting block 708, and the third guide rods 7020 and the support sheet 7021 are arranged in a staggered mode and play a role in guiding and supporting. The second lead screw motor 7015 drives the second lead screw 7016 to rotate to drive the coating stand 705 to ascend and descend, thereby adjusting the height of the coating roller 707. The lifting cylinder 704 adjusts the height of the smooth roll 703 quickly but with low precision, and the second lead screw motor 7015 adjusts the height of the coating roll 707 slowly but with high precision. In combination, the smooth roll 703 and the coating roll 707 can be quickly and accurately adjusted to the appropriate distance. A comma roller 709 is used to scrape off excess paint on the coating roller 707, and a regulation cylinder 7018 is used to control the distance between the coating roller 707 and the comma roller 709 to control the thickness of the paint coated on the separator.

The cutting mechanism 4 includes a cutting cylinder 406 fixed to the vertical plate 11, and a cutter 407 is connected to an upper end of a piston rod of the cutting cylinder 406. The cutting cylinder 406 controls the piston rod to extend, so as to drive the cutter 407 to move upwards, and cut off the diaphragm positioned between the two winding rollers 9013.

A rotary notch 14 is formed in a position, corresponding to the winding mechanism 9, of the vertical plate 11, the winding mechanism 9 includes a first rotary support 901 and a second rotary support 904, a first rotary plate 902 and a second rotary plate 906 are respectively rotatably arranged on the first rotary support 901 and the second rotary support 904, two rotary seats 903 are rotatably arranged on the first rotary plate 902, a rotary motor 905 is arranged on the front side of the second rotary support 904, the rotary motor 905 drives the second rotary plate 906 to rotate, a third screw rod motor 908 is arranged on the rear side of the second rotary plate 906, the third screw rod motor 908 is connected with a third screw rod 909 in a driving manner, a motor fixing frame 9010 is in threaded connection with the third screw rod, a winding motor 9011 is mounted on the motor fixing frame 9010, the winding motor 9011 is connected with a winding roller 9013 in a driving manner through a coupler 9012, a winding notch 9014 is formed in the winding roller 9013 along the length direction of the winding roller 9013, and a through hole 907 for the winding. The third screw motor 908 drives the third screw 909 to rotate, so that the winding roller 9013 is driven by the motor fixing frame 9010 to move back and forth, the winding roller 9013 moves forward, the front end of the winding roller 9013 is inserted into the rotating seat 903 and fixedly mounted, or the winding roller 9013 moves backward, and the front end of the winding roller 9013 is immersed into the through hole 907.

A fixing groove 9017 is formed in the end portion of the winding gap 9014 of the winding roller 9013, a fixing cylinder 9018 is installed at the bottom of the fixing groove 9017, and a second fixing block 9019 is connected to a piston rod of the fixing cylinder 9018. The isolating membrane penetrates into the rolling notch 9014, the piston rod of the fixing cylinder 9018 extends, and the second fixing block 9019 moves towards the rolling notch 9014, so that the isolating membrane in the rolling notch 9014 is fixed, and the rolling roller 9013 can roll the isolating membrane conveniently.

A notch for inserting the front end of the wind-up roll 9013 is formed in the rotating seat 903, a positioning convex block is arranged in the notch, a positioning notch is formed in the front end of the wind-up roll 9013, and the positioning convex block and the positioning notch are matched with each other to form positioning and fixing. So that the wind-up roll 9013 can rotate smoothly, and when the second rotating plate 906 rotates, the first rotating plate 902 can be driven to rotate synchronously by the rotating base 903.

After the membrane is wound on the left winding roller 9013, the rotating motor 905 drives the second rotating plate 906 to rotate anticlockwise, and the winding roller 9013 which finishes winding rotates to the right side. Meanwhile, the take-up roll 9013 which is taken up at the rear side reaches the left side, and under the action of the third screw motor 908, the take-up roll moves forward and enables the diaphragm to penetrate into the take-up notch 9014. The left winding roller 9013 is driven by the winding motor 9011 to rotate, the diaphragm is wound on the left winding roller 9013, meanwhile, the diaphragm located between the two winding rollers 9013 is tensioned, and the cutting mechanism 4 operates to cut the diaphragm at a position between the two winding rollers 9013. The right take-up roll 9013 moves backwards under the action of the third screw motor 908, so that the diaphragm wound on the right take-up roll falls off.

Two guide rollers 15 and a tension roller mechanism 6 are arranged between the drying mechanism 8 and the cutting mechanism 4, and the tension roller mechanism 6 is positioned between the two guide rollers 15. The tension roller mechanism 6 is used for adjusting the tension of the diaphragm to tension the diaphragm.

Positioning notches 2021 are formed in the left end and the right end of the mounting plate 202, a positioning screw 2012 is arranged in the positioning notch 2021 of the mounting plate 202 on the outer side, a bearing seat 2011 is fixedly connected to the inner end of the positioning screw 2012, a positioning nut 2013 is connected to the outer end of the positioning screw 2012, a positioning rod 2010 is arranged in the positioning notch 2021 of the mounting plate 202 on the inner side, a limiting block 209 is connected to the outer end of the positioning rod 2010, a bearing seat 2011 is fixedly connected to the inner end of the positioning rod 2010, the unwinding roller 208 comprises an unwinding roller shaft 2082 and an unwinding roller body 2081 fixedly mounted on the unwinding roller shaft 2082, two ends of the unwinding roller shaft 2082 are correspondingly mounted in the bearing seats 2011 on two sides respectively, a positioning hole 2022 and a fixing hole 2027 are formed in the positions, which are located above and below the positioning notch 2021, a positioning screw 2015 is arranged in the positioning hole 2022, Reducing section and aperture section, set screw 2015 is from the big aperture section when passing through the reducing section, its lower extreme can aim at the aperture section automatically and accomplish the location, convenient follow-up twist in the locating lever 2010, the fixed orifices 2027 bottom is connected with spring 2023, spring 2023 upper end is connected with locating pin 2024, inboard mounting panel 202 has been seted up with the position department that the fixed orifices 2027 corresponds and has been fixed a window 2026, the bottom surface and the fixed orifices 2027 intercommunication of fixed window 2026, the locating pin 2024 outside is equipped with the location and marks 2025, locating lever 2010 periphery symmetry is equipped with two constant head tanks 2014. After the positioning rod 2010 is installed in the positioning notch 2021, the positioning rod is rotated until one positioning groove 2014 corresponds to the positioning pin 2024, so that the positioning pin 2024 is lifted up under the action of the spring 2023 to be clamped in the positioning groove 2014. By observing the position of the positioning mark 2025 through the positioning window 2026, it can be determined whether the positioning pin 2024 is inserted into the positioning groove 2014 of the positioning rod 2010. And then, a positioning screw 2015 is inserted into the positioning hole 2022, and the positioning screw 2015 is screwed into the other positioning groove 2014 by means of a tool, so that the positioning rod 2010 is fixed in the positioning notch 2021 to prevent the positioning rod from moving in the unreeling process. Meanwhile, the positioning pin 2024 can be pulled to move downwards through the positioning mark 2025, so that the positioning pin 2024 is pulled out of the positioning groove 2014 of the positioning rod 2010.

A guide notch 9015 is formed in the periphery of the through hole 907, and a guide strip 9016 matched with the guide notch 9015 is formed in the periphery of the winding motor 9011.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A coating device for a lithium ion battery separator, characterized in that: the device comprises a rack (1), wherein an unreeling mechanism (2), a swinging mechanism (3), a cleaning mechanism (5), a coating mechanism (7), a drying mechanism (8), a reeling mechanism (9) and a cutting mechanism (4) are arranged on the rack (1) according to the advancing direction of a diaphragm, the rack (1) comprises a vertical plate (11), a top plate (12) and a supporting plate (13), the top plate (12) and the supporting plate (13) are vertically arranged on the vertical plate (11), a plurality of guide rollers (15) used for guiding the conveying direction of the diaphragm are arranged on the vertical plate (11), each guide roller (15) comprises a first fixing plate (1501) and a second fixing plate (1504) which are fixed on the vertical plate (11), the front end of each first fixing plate (1501) is connected with a first fixing rod (1502), the front end of each first fixing rod (1502) is connected with a fixing arm (1503), and a, the front end and the rear end of the supporting arm (1505) are respectively connected with a front end plate (1506) and a rear end plate (1507), the supporting arm (1505) passes through the fixing arm (1503) to be arranged, and a rotating roller (1508) is rotatably arranged between the front end plate (1506) and the rear end plate (1507);

the unwinding mechanism (2) comprises a rotating rod (201) and a supporting rod (203) which are fixed on a vertical plate (11), the rotating rod (201) is rotatably provided with two mounting plates (202), two connecting rods (207) are connected between the two mounting plates (202), the mounting plates (202) on the outer side are connected with a hinge rod (206), the outer end of the supporting rod (203) is hinged with a rotating cylinder (204), a rotating cylinder piston rod (205) is arranged in the rotating cylinder (204), the upper end of the rotating cylinder piston rod (205) is hinged with the hinge rod (206), and two unwinding rollers (208) are rotatably arranged between the two mounting plates (202);

the swing mechanism (3) comprises a swing frame (301) fixed on a vertical plate (11), a swing shaft is rotatably arranged in the swing frame (301), two swing rods (302) are fixedly mounted on the swing shaft, a guide roller (303) is rotatably arranged between the lower parts of the two swing rods (302), the inner end of the swing shaft penetrates through the vertical plate (11) and is connected with a driven bevel gear (306), a swing motor (304) is arranged on the rear side of the vertical plate (11), the swing motor (304) is connected with a driving bevel gear (305) in a driving mode, and the driving bevel gear (305) is meshed with the driven bevel gear (306);

the coating mechanism (7) comprises a supporting block (701) arranged on a supporting plate (13), a lifting block (702) is arranged on the supporting block (701) in a sliding manner, a lifting cylinder (704) is arranged below the lifting block (702), the upper end of a piston rod of the lifting cylinder (704) is connected with the bottom of the lifting block (702), a smooth roller (703) is arranged on the lifting block (702) in a rotating manner, a sliding rail (7013) is arranged on the upper portion of the top plate (12), a sliding block (7014) is arranged on the sliding rail (7013) in a sliding manner, a second lead screw motor (7015) is fixedly arranged on the sliding block (7014), a second lead screw (7016) is connected with the second lead screw (7015) in a driving manner, the second lead screw (7016) penetrates through the top plate (12) and is rotatably connected with a rotating base (7017) at the lower end, a coating rack (705) is connected with the lower portion of the rotating base (7017), a, the coating frame (705) both sides are connected with guide block (7011), second guide bar (7012) runs through guide block (7011) and sets up, coating frame (705) sub-unit connection has two coating roller installation pieces (706), two of front and back side rotate between coating roller installation piece (706) and be provided with coating roller (707), installation piece (706) right side is equipped with comma roller installation piece (708), two fixed comma roller (709) that is provided with between comma roller installation piece (708), coating roller installation piece (706) upper portion is provided with adjusting cylinder (7018), comma roller installation piece (708) upper portion is equipped with fixed block one (7019), the piston rod right-hand member of adjusting cylinder (7018) is connected with fixed block one (7019), comma roller installation piece (708) left end is connected with a plurality of third guide bars (7020), third guide bar (7020) left end stretches into coating roller installation piece (706) inside, the right end of the coating roller mounting block (706) is connected with a support sheet (7021), and the right end of the support sheet (7021) extends into the comma roller mounting block (708);

the cutting mechanism (4) comprises a cutting cylinder (406) fixed on the vertical plate (11), and the upper end of a piston rod of the cutting cylinder (406) is connected with a cutter (407);

a rotary notch (14) is formed in the position, corresponding to the winding mechanism (9), of the vertical plate (11), the winding mechanism (9) comprises a first rotary support (901) and a second rotary support (904), a first rotary plate (902) and a second rotary plate (906) are respectively arranged on the first rotary support (901) and the second rotary support (904) in a rotating manner, two rotary seats (903) are arranged on the first rotary plate (902) in a rotating manner, a rotary motor (905) is arranged on the front side of the second rotary support (904), the rotary motor (905) drives the second rotary plate (906) to rotate, a third lead screw motor (908) is arranged on the rear side of the second rotary plate (906), the third lead screw motor (908) is in driving connection with a third lead screw (909), a motor fixing frame (9010) is in threaded connection with the third lead screw (909), and a winding motor (9011) is installed on the motor fixing frame (9010), the winding motor (9011) is connected with a winding roller (9013) through a coupler (9012) in a driving mode, a winding notch (9014) is formed in the winding roller (9013) along the length direction of the winding roller, a through hole (907) through which the winding roller (9013) penetrates is formed in the second rotating plate (906), a fixing groove (9017) is formed in the position, located at the end of the winding notch (9014), of the winding roller (9013), a fixing cylinder (9018) is installed at the bottom of the fixing groove (9017), and a second fixing block (9019) is connected to a piston rod of the fixing cylinder (9018).

2. The coating device for the lithium ion battery separator according to claim 1, wherein: two guide rollers (15) and a tension roller mechanism (6) are arranged between the drying mechanism (8) and the cutting mechanism (4), and the tension roller mechanism (6) is located between the two guide rollers (15).

3. The coating device for the lithium ion battery separator according to claim 1, wherein: locating notches (2021) are respectively formed at the left end and the right end of the mounting plate (202), a locating screw (2012) is arranged in the locating notch (2021) of the mounting plate (202) at the outer side, a bearing seat (2011) is fixedly connected with the inner end of the locating screw (2012), a locating nut (2013) is connected with the outer end of the locating screw (2012), a locating rod (2010) is arranged in the locating notch (2021) of the mounting plate (202) at the inner side, the outer end of the locating rod (2010) is connected with a limiting block (209), a bearing seat (2011) is fixedly connected with the inner end of the locating rod (2010), the unwinding roller (208) comprises an unwinding roller shaft (2082) and an unwinding roller body (2081) fixedly arranged on the unwinding roller shaft (2082), the two ends of the unwinding roller shaft (2082) are respectively and correspondingly arranged in the bearing seats (2011) at the two sides, and a locating hole (2022) and a fixing block ( Decide hole (2027), be equipped with set screw (2015) in locating hole (2022), fixed orifices (2027) bottom connection has spring (2023), spring (2023) upper end is connected with locating pin (2024), and is inboard location window (2026) have been seted up with the position department that fixed orifices (2027) correspond to mounting panel (202), the bottom surface and the fixed orifices (2027) intercommunication of location window (2026), locating pin (2024) outside is equipped with location mark (2025), locating lever (2010) periphery symmetry is equipped with two constant head tanks (2014).

4. The coating device for the lithium ion battery separator according to claim 1, wherein: the periphery of the through hole (907) is provided with a guide notch (9015), and the periphery of the winding motor (9011) is provided with a guide strip (9016) matched with the guide notch (9015).