A device for coating a polymer protective layer on the surface of a capacitor metallized film

Abstract

The present invention discloses a polymer protective layer coating device for the surface of a capacitor metallized film, comprising a protective layer coating device, the protective layer coating device comprising a film conveying mechanism, an aluminum evaporation component, a zinc evaporation component and a spraying component are sequentially arranged on one side of the film conveying mechanism, a curing component is relatively arranged on one side of the spraying component through a telescopic component, the spraying component comprises a spraying shell, a polymer vaporization chamber is arranged in the spraying shell, a spraying cover plate is installed on the side of the spraying shell facing the film conveying mechanism, a spraying nozzle connected to the polymer vaporization chamber is provided through the spraying cover plate, a filling pipe connected to the polymer vaporization chamber is installed on one side of the spraying shell, an evaporation platform arranged relatively to the output end of the filling pipe is arranged in the polymer vaporization chamber, and a plurality of heating rods are arranged on the periphery of the polymer vaporization chamber. The present invention has good film-forming performance and stable film-forming performance.

Description

Technical Field

[0001] The invention relates to the technical field of thin film coating, in particular to a device for coating a polymer protective layer on the surface of a capacitor metallized film. Background Art

[0002] Capacitor film surface anti-oxidation is a method used to prevent film surface oxidation on metallized capacitors, aiming to improve the capacitor's anti-oxidation ability and overall quality. It provides an effective anti-oxidation protective layer on metallized capacitors, isolating them from the air and preventing metal oxidation. This protection not only improves the capacitor's anti-oxidation ability and extends its service life, but also solves the problem of heat dissipation difficulties in large-capacity capacitors. This innovation is of great significance to the capacitor industry and will help further improve the performance and reliability of electronic equipment.

[0003] The existing technology is to use antioxidant oil in a vacuum environment, heat the oil to the evaporation temperature, gasify it, evaporate it to the surface of the metal film, and form a protective film to isolate the air. However, this method will have the following problems: 1. If the oil is not well controlled, it will have a certain impact on the quality of the capacitor; 2. The cost of oil is very high; 3. The subsequent process will contact the protective surface, and the protective oil will be transferred to other objects, causing pollution. At the same time, when the oil on the surface is reduced, the protection will be incomplete and the effect will not be achieved. Summary of the invention

[0004] The purpose of the present invention is to provide a device for coating a polymer protective layer on the surface of a capacitor metallized film to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for coating a polymer protective layer on the surface of a capacitor metallized film comprises a protective layer coating device, wherein the protective layer coating device comprises a film conveying mechanism, wherein an aluminum evaporation component, a zinc evaporation component and a spraying component are sequentially arranged on one side of the film conveying mechanism along the conveying direction, wherein a curing component is arranged on one side of the spraying component along the conveying direction of the film conveying mechanism, wherein the curing component is installed on one side of the film conveying mechanism through a telescopic mechanism, wherein the spraying component comprises a spraying shell, wherein a polymer vaporization chamber is arranged in the spraying shell, wherein a spraying cover plate is installed on the side of the spraying shell facing the film conveying mechanism, wherein a spraying nozzle communicating with the polymer vaporization chamber is penetrated on the spraying cover plate, wherein a filling pipe communicating with the polymer vaporization chamber is installed on one side of the spraying shell, wherein an evaporation platform is arranged in the polymer vaporization chamber, wherein the evaporation platform is arranged at the output end of the filling pipe, and wherein a plurality of groups of heating rods are arranged on the periphery of the polymer vaporization chamber.

[0007] As a further solution of the present invention: the film conveying mechanism includes a symmetrically arranged unwinding roller and a winding roller, a winding motor is arranged on the winding roller, a plurality of groups of flattening rollers are arranged between the unwinding roller and the winding roller, a cold drum is arranged between two groups of flattening rollers, an aluminum evaporation component and a zinc evaporation component are arranged opposite to the cold drum, a plasma treatment component and a tension measurement component are arranged on the side close to the unwinding roller, and a winding swing arm is also arranged on the side close to the winding roller and rotatably attached to one side of the winding roller.

[0008] As a further solution of the present invention: the curing assembly includes a curing shell, which is installed on one side of the film conveying mechanism through a telescopic mechanism, and a curing cover is installed on the side of the curing shell facing the flattening roller in the film conveying mechanism, and an electron emission port connected to the curing shell is through-set on the curing cover, an electrode is installed in the curing shell, a wiring port electrically connected to the electrode is provided on one side of the curing shell, and an air inlet is installed on the side of the curing shell.

[0009] As a further solution of the present invention: the telescopic mechanism includes a first mounting pad and a second mounting pad symmetrically arranged, the first mounting pad and the second mounting pad are respectively provided with a first mounting hole and a second mounting hole for connecting screws, the second mounting pad is fixedly connected with a sleeve in the middle part of one side facing the first mounting pad, the first mounting pad is connected with a driving component corresponding to the sleeve in the middle part, the first mounting pad is symmetrically fixedly connected with guide rods on both sides of the first mounting pad, and vertical plates symmetrically fixedly connected with the guide rods on both sides of the sleeve are symmetrically fixedly arranged.

[0010] As a further solution of the present invention: a "U"-shaped bayonet is provided at the end of the vertical plate, and the inner side of the opening of the "U"-shaped bayonet is adapted to the edge of the guide rod, a connecting rod is connected between the second mounting pad and the vertical plate, and the connecting rod is arranged in contact with the guide rod, and a baffle is rotatably connected to the end of the guide rod, and the end of the baffle is adapted to the opening width of the "U"-shaped bayonet.

[0011] As a further solution of the present invention: the driving assembly includes a rotating tube rotatably connected to the center of the first mounting pad through a sealed bearing, a rotating ring is provided at the end transmission connection of the rotating tube away from the first mounting pad, a screw is fixedly connected in the sleeve, and the rotating ring and the screw are connected by threaded cooperation.

[0012] As a further solution of the present invention: a plurality of clamping slides movably embedded in the inner side of the "U"-shaped bayonet are movably pressed against the surface of the guide rod, and the clamping slides include a sliding block slidably embedded in the side of the "U"-shaped bayonet, and the sliding block is connected to the side of the "U"-shaped bayonet through a spring, and a ball is movably embedded in the sliding block.

[0013] As a further solution of the present invention: a limiting block is provided for sliding cooperation on the side of the rotating ring, a guide block is provided for sliding embedment on the side of the rotating tube, the guide block and the limiting block are transmission connected, the inner wall of the sleeve is provided with multiple groups of internal teeth in a ring array, and the limiting block and the internal teeth are snap-fitted and adapted.

[0014] As a further solution of the present invention: the rotating ring includes a ring body, the side of the ring body is embedded with multiple groups of sliding grooves, the center of the ring body is provided with a threaded barrel, the threaded barrel is movably sleeved on the periphery of the screw through a threaded fit, the limit block is slidably fitted in the sliding groove, and the limit block is connected to the sliding groove with a spring that pushes the limit block away from the sliding groove.

[0015] As a further solution of the present invention: the rotating tube port is embedded with a through hole for accommodating a screw rod, and a bearing mounting hole is embedded at the opening of the through hole close to one side of the sleeve. The threaded tube is rotatably connected to the bearing mounting hole, and the end face of the rotating tube is located outside the bearing mounting hole and is provided with a plurality of arc-shaped grooves distributed in a circular array, and the guide block is slidably connected in the arc-shaped groove.

[0016] As a further solution of the present invention: a sliding rod is fixedly connected to the side of the limit block, and the sliding rod is slidably connected to the guide block. Sliding plates are symmetrically fixedly connected on both sides of the limit block, and the sliding plates are slidably adapted to the sides of the sliding groove.

[0017] As a further solution of the present invention: the guide block includes an arc-shaped slider slidingly fitted in the arc-shaped slide groove, the surface of the arc-shaped slider is embedded with a guide groove, the guide groove is an arc-shaped curved track, and the two ends of the guide groove are bent toward the center of the end face of the rotating tube.

[0018] As a further solution of the present invention: the method for using the device for coating the polymer protective layer on the surface of the capacitor metallized film comprises the following steps:

[0019] S1, in a vacuum environment, the film is transported by a film transport mechanism;

[0020] S2, the film passes through the aluminum evaporation component and the zinc evaporation component to complete aluminum plating and zinc plating respectively;

[0021] S3, the polymer enters the evaporation platform through the filling pipe. The temperature of the evaporation platform is 200-350°C. The polymer vaporizes at high temperature and is sprayed toward the film from the spray nozzle to form a polymer layer.

[0022] S4, curing the high molecular polymer layer formed on the surface of the film through a curing component.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the film is transported by the film transport mechanism, and the entire coating process is in a vacuum environment. First, the film passes through the aluminum evaporation component and the zinc evaporation component to complete aluminum plating and zinc plating respectively, and then the polymer enters the evaporation platform through the filling pipe. The temperature of the evaporation platform is 200-350°C. The polymer vaporizes at high temperature to form polymer vapor and fill the polymer vaporization cavity. The polymer vapor is sprayed out from the spray nozzle, and the function of the spray cover plate is to adjust the size of the spray nozzle. Then, the polymer layer formed on the surface of the film is cured by the curing component, thereby improving the film performance and avoiding the destruction of the newly formed polymer layer. In the conventional scheme, the protective oil enters the evaporation platform through the filling pipe. The temperature of the evaporation platform is 180-200°C. The oil vaporizes at high temperature to form oil vapor and fill the polymer vaporization cavity. The oil vapor is sprayed out from the spray nozzle, and the function of the spray cover plate is to adjust the size of the spray nozzle. In the present application, the curing assembly preferably adopts a curtain electron gun, and the aluminum evaporation assembly and the zinc evaporation assembly are both aluminum evaporation assembly structures and zinc evaporation assembly structures commonly used in the prior art, which will not be repeated here. In the present application, there are no other harmful additives in the material, and the characteristics of the selected polymer material mainly include its good material properties, good water resistance, excellent weather resistance and durability, high bonding strength, delicate appearance, strong adhesion, good film-forming property, and by adding functional monomers and using specific emulsifier types and ratios, it can have specific properties, thereby being given different special purposes. In addition, the preferred use of acrylic copolymers can also improve the gloss, hardness and drought resistance of the coating, showing its wide application potential in multiple fields. Through the above-mentioned method, the withstand voltage level of the capacitor can also be enhanced, and an insulating protective layer of several nanometers to tens of nanometers is formed on the metallized film, which can improve the insulation performance of the film. At the same time, this method can also improve the service life of the capacitor. The protective layer formed on the surface of the film is completed under a vacuum environment. After the vacuum coating is completed, the protective film is formed by online spraying, which effectively prevents the surface metal layer from contacting harmful gases in the atmosphere, realizes the surface protection of the film, and improves the service life. Finally, the operating temperature of the capacitor can be increased, and the polymer material can ensure good physical properties under normal high temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the spraying assembly in the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the curing component in the present invention.

[0027] Figure 4It is a structural schematic diagram of the telescopic mechanism in the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the telescopic mechanism and the driving assembly in the present invention.

[0029] Figure 6 It is a schematic structural diagram of the second mounting pad and sleeve in the present invention.

[0030] Figure 7 It is a side view of the second mounting pad and sleeve in the present invention.

[0031] Figure 8 for Figure 7 Schematic diagram of the structure in the BB direction.

[0032] Fig. 9 for Figure 6 Schematic diagram of the enlarged structure of area A in the middle.

[0033] Fig.10 It is a schematic structural diagram of the clamping sliding member in the present invention.

[0034] Fig.11 It is a schematic diagram of the structure of the rotating ring in the present invention.

[0035] Fig.12 It is a schematic diagram of the structure of the limit block in the present invention.

[0036] Fig.13 It is a schematic diagram of the structure of the rotating tube in the present invention.

[0037] Fig.14 for Fig.13 Schematic diagram of the enlarged structure of the C area in the middle.

[0038] In the figure: 1-first mounting pad, 11-first mounting hole, 12-guide rod, 13-blocking piece, 2-driving assembly, 21-rotating tube, 2101-through hole, 2102-bearing mounting hole, 2103-arc sliding groove, 22-sealed bearing, 23-rotating ring, 2301-ring body, 2302-threaded cylinder, 2303-sliding groove, 24-limiting block, 2401-sliding sheet, 2402-sliding rod, 25-guide block, 2501-arc sliding block, 2502-guide groove, 3-sleeve, 31-vertical plate, 32-"U"-shaped bayonet, 33-clamping sliding member, 3301-sliding block, 3302-ball, 3303-spring, 34-screw, 35-inner tooth, 4-second mounting pad, 41-second mounting hole, 42-connecting rod, 5-protective layer coating device, 51-unwinding wheel, 52-winding wheel, 53-plasma treatment assembly, 54-tension measurement assembly, 55-flattening roller, 56-aluminum evaporation assembly, 57-zinc evaporation assembly, 58-spraying assembly, 5801-spraying shell, 5802-spraying cover, 5803-spraying nozzle, 5804-polymer vaporization chamber, 5805-evaporation platform, 5806-filling pipe, 5807-heating rod, 59-winding swing arm, 6-curing assembly, 61-curing shell, 62-electrode, 63-wiring port, 64-air inlet, 65-curing cover, 66-electron emission port, 7-cold drum. DETAILED DESCRIPTION

[0039] See also Figure 1-Figure 3 In an embodiment of the present invention, a device for coating a polymer protective layer on the surface of a capacitor metallized film includes a protective layer coating device 5, wherein the protective layer coating device 5 includes a film conveying mechanism placed in a vacuum environment, wherein one side of the film conveying mechanism is provided with an aluminum evaporation component 56, a zinc evaporation component 57 and a spraying component 58 in sequence along the conveying direction, wherein one side of the spraying component 58 is also provided with a curing component 6 along the conveying direction of the film conveying mechanism, wherein the spraying component 58 includes a spraying shell 5801, wherein the spraying shell 5801 is provided with a polymer vaporization chamber 5 804, a spray cover plate 5802 is installed on the side of the spray housing 5801 facing the film conveying mechanism, a spray nozzle 5803 is penetrated through the spray cover plate 5802 and communicated with the polymer vaporization chamber 5804, a filling pipe 5806 connected with the polymer vaporization chamber 5804 is installed on one side of the spray housing 5801, an evaporation platform 5805 arranged opposite to the output end of the filling pipe 5806 is arranged in the polymer vaporization chamber 5804, and a plurality of heating rods 5807 are arranged on the periphery of the polymer vaporization chamber 5804.

[0040] In this scheme, the film is transported by the film transport mechanism, and the entire coating process is in a vacuum environment. First, it passes through the aluminum evaporation component 56 and the zinc evaporation component 57 to complete aluminum plating and zinc plating respectively. Then, the polymer enters the evaporation platform 5805 through the filling pipe 5806. The temperature of the evaporation platform 5805 is 200-350°C. The polymer vaporizes at high temperature to form polymer vapor and fill the polymer vaporization cavity 5804. The polymer vapor is sprayed out from the spray nozzle 5803. The function of the spray cover plate 5802 is to adjust the size of the spray nozzle 5803. Then, the polymer layer formed on the surface of the film is cured by the curing component 6, so as to improve the film performance and avoid the damage of the newly formed polymer layer.

[0041] In the conventional scheme, the protective oil enters the evaporation platform 5805 through the filling pipe 5806. The temperature of the evaporation platform 5805 is 180-200°C. The oil vaporizes at high temperature to form oil vapor, which fills the polymer vaporization chamber 5804. The oil vapor is sprayed out from the spray nozzle 5803. The function of the spray cover plate 5802 is to adjust the size of the spray nozzle 5803. In the present application, the curing component 6 preferably adopts a curtain-type electron gun, and the aluminum evaporation component 56 and the zinc evaporation component 57 are both aluminum evaporation component structures and zinc evaporation component structures commonly used in the prior art, which will not be repeated here.

[0042] In summary, the method for using the device for coating a polymer protective layer on the surface of a capacitor metallized film comprises the following steps:

[0043] S1, in a vacuum environment, the film is transported by a film transport mechanism;

[0044] S2, the film passes through the aluminum evaporation component 56 and the zinc evaporation component 57 to complete aluminum plating and zinc plating respectively;

[0045] S3, the polymer enters the evaporation platform 5805 through the filling pipe 5806. The temperature of the evaporation platform 5805 is 200-350°C. The polymer vaporizes at high temperature and is sprayed toward the film from the spray nozzle 5803 to form a polymer layer.

[0046] S4, curing the high molecular polymer layer formed on the surface of the film by the curing component 6.

[0047] In this application, there are no other harmful additives in the material, and the characteristics of the selected polymer material mainly include good material properties, good water resistance, excellent weather resistance and durability, high bonding strength, fine appearance, strong adhesion, good film-forming property, and by adding functional monomers and using specific emulsifier types and ratios, it can have specific properties and be given different special uses. In addition, the preferred use of acrylic copolymers can also improve the gloss, hardness and drought resistance of the coating, showing its wide application potential in multiple fields.

[0048] Through the above method, the withstand voltage level of the capacitor can also be enhanced, and an insulating protective layer of several nanometers to tens of nanometers is formed on the metallized film, which can improve the insulation performance of the film.

[0049] At the same time, this method can also increase the service life of the capacitor. The protective layer formed on the surface of the film is completed in a vacuum environment. After the vacuum coating is completed, the protective film is formed by online spraying, which effectively prevents the surface metal layer from contacting harmful gases in the atmosphere, realizes the surface protection of the film, and increases the service life.

[0050] Finally, the operating temperature of the capacitor can be increased, and the polymer material can ensure good physical properties under normal high temperature conditions.

[0051] In this embodiment, the film conveying mechanism includes a symmetrically arranged unwinding roller 51 and a winding roller 52, and the winding roller 52 is provided with a winding motor. The untreated film is wound on the unwinding roller 51, and is pulled by the rotating winding roller 52 and wound around the outer periphery of the winding roller 52. In this process, the film is subjected to coating, spraying and curing treatment. A plurality of flattening rollers 55 are arranged between the unwinding roller 51 and the winding roller 52, and the film is wound through the plurality of flattening rollers 55 in sequence, so that the film is tensioned by the flattening rollers 55, which facilitates the processing of the film. A cold drum 7 is arranged between the two groups of flattening rollers 55, and the film is wound through the cold drum 7, and the aluminum evaporation component 56 and the zinc evaporation component 57 are arranged opposite to the cold drum 7. A plasma processing component 53 and a tension measurement component 54 for detecting the film are also arranged on the side close to the unwinding roller 51. A winding swing arm 59 is also arranged on the side close to the winding roller 52, which is rotatably attached to the side of the winding roller 52. The film conveying mechanism is a commonly used conveying structure design in the prior art and is widely used in the art, so the specific working principle will not be described in detail.

[0052] Further, the curing assembly 6 includes a curing shell 61, which is installed on one side of the film conveying mechanism through a telescopic mechanism, and a curing cover plate 65 is installed on the curing shell 61 facing the flattening roller 55 in the film conveying mechanism, and an electron emission port 66 connected to the curing shell 61 is provided on the curing cover plate 65, and an electrode 62 is installed in the curing shell 61, and a wiring port 63 electrically connected to the electrode 62 is provided on one side of the curing shell 61, and an air inlet 64 is installed on the side of the curing shell 61. Preferably, the curing assembly 6 is a curtain-type electron gun commonly used in the prior art, so it is not described in detail.

[0053] Among them, Figure 4-Figure 7 As shown, the telescopic mechanism includes a first mounting pad 1 and a second mounting pad 4 symmetrically arranged, and the first mounting pad 1 and the second mounting pad 4 are respectively provided with a first mounting hole 11 and a second mounting hole 41 for connecting screws, the first mounting pad 1 is connected to one side of the membrane conveying mechanism by screws penetrating the first mounting hole 11, and the second mounting pad 4 is connected to the curing shell 61 by screws penetrating the second mounting hole 41, and the second mounting pad 4 is fixedly connected with a sleeve 3 in the middle part facing one side of the first mounting pad 1, and the first mounting pad 1 is connected with a driving component 2 corresponding to the sleeve 3 in the middle part, and the first mounting pad 1 is symmetrically fixedly connected with guide rods 12 on both sides, and the sleeve 3 is symmetrically fixedly connected with vertical plates 31 slidably adapted to the guide rods 12 on both sides.

[0054] Preferably, a driving motor for driving the output end of the driving component 2 to rotate is installed at the end of the driving component 2. The driving motor can drive the output end of the driving component 2 to rotate, thereby driving the sleeve 3 and the second mounting pad 4 to be relatively close to or away from the first mounting pad 1. In this way, the second mounting pad 4 can drive the curing component 6 to stably approach or move away from the film in a vacuum environment. The cooperation between the guide rod 12 and the vertical plate 31 can limit the sleeve 3 to rotate synchronously with the output end of the driving component 2, while maintaining the stable movement of the sleeve 3 and providing stable support.

[0055] Furthermore, a "U"-shaped bayonet 32 ​​is provided at the end of the vertical plate 31, and the "U"-shaped bayonet 32 ​​is opened. The opening width of the "U"-shaped bayonet 32 ​​matches the diameter of the guide rod 12, forming a clearance fit. The inner side of the "U"-shaped bayonet 32 ​​opening is adapted to the edge of the guide rod 12, so that the "U"-shaped bayonet 32 ​​can form a sliding fit with the guide rod 12, and can limit the sleeve 3 to rotate synchronously with the output end of the drive assembly 2. A connecting rod 42 is connected between the second mounting pad 4 and the vertical plate 31, and the connecting rod 42 is arranged in contact with the guide rod 12. The connecting rod 42 can cooperate with the guide rod 12 to ensure In order to maintain the stability of the guide rod 12 when it slides relative to the "U"-shaped bayonet 32, and at the same time increase the supporting strength of the vertical plate 31, the end of the guide rod 12 is rotatably connected to a baffle 13, the end of the baffle 13 is adapted to the opening width of the "U"-shaped bayonet 32, and the baffle 13 is preferably connected to the guide rod 12 through a damping bearing. When the end of the baffle 13 is rotated to be aligned with the opening of the "U"-shaped bayonet 32, the "U"-shaped bayonet 32 ​​and the vertical plate 31 can slide out from the end of the guide rod 12. When the baffle 13 is rotated to be out of alignment with the opening of the "U"-shaped bayonet 32, the sleeve 3 and the vertical plate 31 can be prevented from sliding off.

[0056] Preferably, the driving assembly 2 comprises a rotating tube 21 rotatably connected to the center of the first mounting pad 1 through a sealing bearing 22, a rotating ring 23 is provided at the end of the rotating tube 21 away from the first mounting pad 1, a screw 34 is fixedly provided in the sleeve 3, and the rotating ring 23 and the screw 34 are connected by threaded fit. When the rotating tube 21 is driven to rotate by the driving motor, the rotating ring 23 can be driven to rotate synchronously, and then the sleeve 3 is driven to move relative to the first mounting pad 1 through threaded fit driving screw 34, so that the curing assembly 6 can be controlled to move closer to or farther from the film, and the distance can be flexibly adjusted according to the thickness of the polymer material coating on the film, so as to obtain a better processing effect, and the installation and maintenance of the curing assembly 6 are also more convenient and flexible.

[0057] Among them, Figure 6-Figure 10 As shown, the inner side of the "U"-shaped bayonet 32 ​​is movably embedded with multiple groups of clamping slides 33 that movably abut against the surface of the guide rod 12. The clamping slide 33 includes a sliding block 3301 that is slidably embedded in the side of the "U"-shaped bayonet 32. The sliding block 3301 is connected to the side of the "U"-shaped bayonet 32 ​​through a spring 3303, and a ball 3302 is movably embedded on the sliding block 3301. When in use, the ball 3302 extends out of the side of the sliding block 3301 and movably abuts against the surface of the guide rod 12, so that the guide rod 12 has less resistance when moving, and will not affect the restriction on the rotation of the sleeve 3, and can also provide elastic space to avoid the jamming problem.

[0058] like Figure 5-Figure 8 and Figure 11-Figure 14 As shown, the side of the rotating ring 23 is provided with a limited block 24 for sliding cooperation, and the side of the rotating tube 21 is provided with a guide block 25 for sliding embedding, and the guide block 25 is connected with the limited block 24 in a transmission connection, and the inner wall of the sleeve 3 is provided with multiple groups of internal teeth 35 in an annular array, and the limited block 24 is engaged and adapted with the internal teeth 35. When the rotating tube 21 does not rotate, the limited block 24 is engaged and matched with the internal teeth 35, so that the rotating tube 21, the rotating ring 23 and the sleeve 3 cannot rotate relative to each other, so that the spacing between the first mounting pad 1 and the second mounting pad 4 cannot be changed, so the position of the curing assembly 6 is more stable, and when the rotating tube 21 rotates, the rotating tube 21 drives the limited block 24 to move to the inside of the rotating ring 23 through the guide block 25 and disengages from the engagement with the internal teeth 35, and at this time, the rotating tube 21 can drive the rotating ring 23 and the screw 34 in the sleeve 3 to rotate relative to each other, and then drive the sleeve 3 to be relatively close to or away from the first mounting pad 1 through threaded engagement.

[0059] Among them, the rotating ring 23 includes a ring body 2301, and the end face size of the ring body 2301 is the same as that of the rotating tube 21. The side of the ring body 2301 is embedded with multiple groups of sliding grooves 2303, and the sliding grooves 2303 are preferably distributed in a ring array. A threaded barrel 2302 is set through the center of the ring body 2301, and the threaded barrel 2302 is movably sleeved on the periphery of the screw rod 34 through a threaded fit. The limit block 24 is slidably fitted in the sliding groove 2303, and the limit block 24 and the sliding groove 2303 are connected with a spring that pushes the limit block 24 away from the sliding groove 2303.

[0060] The port of the rotating tube 21 is embedded with a through hole 2101 for accommodating the screw 34, and the opening of the through hole 2101 close to the side of the sleeve 3 is embedded with a bearing mounting hole 2102, and the threaded tube 2302 is rotatably connected to the bearing mounting hole 2102. The end face of the rotating tube 21 is located outside the bearing mounting hole 2102 and is provided with a plurality of arc grooves 2103 distributed in a ring array, and the guide block 25 is slidably connected in the arc groove 2103. When the limit block 24 and the inner tooth 35 are engaged and adapted, the guide block 25 is located in the middle of the arc groove 2103, and the sliding trajectory of the guide block 25 in the arc groove 2103 is an arc trajectory, and the center of the arc coincides with the center of the end face of the rotating tube 21.

[0061] Furthermore, a sliding rod 2402 is fixedly connected to the side of the limit block 24, and the sliding rod 2402 is slidably connected to the guide block 25. Sliding plates 2401 are symmetrically fixedly connected on both sides of the limit block 24, and the sliding plates 2401 are slidably adapted to the sides of the sliding groove 2303.

[0062] The guide block 25 includes an arc-shaped slider 2501 slidably fitted in the arc-shaped slide groove 2103 , and a guide groove 2502 is embedded on the surface of the arc-shaped slider 2501 . The guide groove 2502 is an arc-shaped curved track, and both ends of the guide groove 2502 are bent toward the center of the end surface of the rotating tube 21 .

[0063] In this way, when the rotating tube 21 rotates, the slide bar 2402 cannot rotate with it because the limit block 24 is engaged with the inner teeth 35. After the slide bar 2402 slides to the edge in the guide groove 2502, the slide bar 2402 moves toward the center of the rotating tube 21 along the trajectory of the guide groove 2502. In this way, the limit block 24 can be disengaged from the cooperation with the inner teeth 35. At this time, after the disengagement, the ring body 2301 can rotate with the rotating tube 21, and the threaded barrel 2302 rotates synchronously with the screw The threads between 34 are adapted, and the sleeve 3 and the first mounting pad 1 are driven to move relative to each other according to the forward or reverse rotation, thereby controlling the distance between the curing assembly 6 and the membrane. After the rotating tube 21 stops rotating and the centrifugal force is lost, the spring pushes the limit block 24 away from the sliding groove 2303, and the slide rod 2402 pushes the arc-shaped slider 2501 back to the middle of the arc-shaped sliding groove 2103, and the limit block 24 and the inner tooth 35 continue to engage with each other, so that the position can be locked, thereby limiting the rotation.

Claims

1. A device for coating a polymer protective layer on the surface of a capacitor metallized film, comprising a protective layer coating device, wherein the protective layer coating device comprises a film conveying mechanism, wherein one side of the film conveying mechanism is provided with an aluminum evaporation component, a zinc evaporation component and a spraying component in sequence along the conveying direction, wherein: A curing component is provided on one side of the spraying component along the conveying direction of the film conveying mechanism, and the curing component is installed on one side of the film conveying mechanism through a telescopic mechanism. The spraying component includes a spraying shell, a polymer vaporization chamber is provided in the spraying shell, a spraying cover plate is installed on the side of the spraying shell facing the film conveying mechanism, a spraying nozzle connected to the polymer vaporization chamber is provided through the spraying cover plate, a filling pipe connected to the polymer vaporization chamber is installed on one side of the spraying shell, an evaporation platform is provided in the polymer vaporization chamber, and the evaporation platform is provided at the output end of the filling pipe, and a plurality of groups of heating rods are provided on the periphery of the polymer vaporization chamber; The telescopic mechanism comprises a first mounting pad and a second mounting pad which are symmetrically arranged, wherein the first mounting pad and the second mounting pad are respectively provided with a first mounting hole and a second mounting hole for connecting screws, a sleeve is fixedly connected and arranged in the middle of the second mounting pad facing the first mounting pad, a driving assembly corresponding to the sleeve is connected and arranged in the middle of the first mounting pad, guide rods are symmetrically fixedly connected and arranged on both sides of the first mounting pad, and vertical plates slidably adapted to the guide rods are symmetrically fixedly connected and arranged on both sides of the sleeve; The driving assembly includes a rotating tube rotatably connected to the center of the first mounting pad through a sealed bearing, a rotating ring is provided at the end of the rotating tube away from the first mounting pad for transmission connection, a screw is fixedly provided in the sleeve, and the rotating ring and the screw are connected by threaded fit; The side of the rotating ring is slidably matched with a limit block, and the side of the rotating tube is slidably embedded with a guide block, the guide block and the limit block are transmission-connected, and the inner wall of the sleeve is provided with multiple groups of internal teeth in an annular array, and the limit block and the internal teeth are snap-fitted; The rotating ring includes a ring body, and multiple groups of sliding grooves are embedded in the side of the ring body. A threaded barrel is set through the center of the ring body. The threaded barrel is movably sleeved on the periphery of the screw through a threaded fit. The limit block is slidably fitted in the sliding groove, and a spring is connected between the limit block and the sliding groove to push the limit block away from the sliding groove; a through hole for accommodating the screw is embedded in the port of the rotating tube, and a bearing mounting hole is embedded in the opening of the through hole close to one side of the sleeve, the threaded barrel is rotatably fitted and connected to the bearing mounting hole, and the end face of the rotating tube is located outside the bearing mounting hole and is provided with multiple arc-shaped sliding grooves distributed in a ring array, and the guide block is slidably fitted and connected in the arc-shaped sliding groove.

2. The device for coating a polymer protective layer on the surface of a capacitor metallized film according to claim 1, characterized in that: The film conveying mechanism includes a symmetrically arranged unwinding roller and a winding roller, a winding motor is arranged on the winding roller for transmission, a plurality of groups of flattening rollers are arranged between the unwinding roller and the winding roller, a cold drum is arranged between two groups of flattening rollers, an aluminum evaporation component and a zinc evaporation component are arranged opposite to the cold drum, a plasma treatment component and a tension measurement component are arranged on the side close to the unwinding roller, and a winding swing arm is also arranged on the side close to the winding roller and rotatably fits on one side of the winding roller.

3. The device for coating a polymer protective layer on the surface of a capacitor metallized film according to claim 2, characterized in that: The curing assembly includes a curing shell, which is installed on one side of the film conveying mechanism through a telescopic mechanism. A curing cover is installed on the side of the curing shell facing the flattening roller in the film conveying mechanism. An electron emission port connected to the curing shell is provided on the curing cover. An electrode is installed in the curing shell. A wiring port electrically connected to the electrode is provided on one side of the curing shell. An air inlet is installed on the side of the curing shell.

4. The device for coating a polymer protective layer on the surface of a capacitor metallized film according to claim 3, characterized in that: A "U"-shaped bayonet is provided at the end of the vertical plate, and the inner side of the opening of the "U"-shaped bayonet is adapted to the edge of the guide rod. A connecting rod is connected between the second mounting pad and the vertical plate, and the connecting rod is arranged in contact with the guide rod. A baffle is rotatably connected to the end of the guide rod, and the end of the baffle is adapted to the opening width of the "U"-shaped bayonet.

5. The device for coating a polymer protective layer on the surface of a capacitor metallized film according to claim 4, characterized in that: The inner side of the "U"-shaped bayonet is movably embedded with multiple groups of clamping sliding members that movably abut against the surface of the guide rod. The clamping sliding members include a sliding block slidably embedded in the side of the "U"-shaped bayonet. The sliding block is connected to the side of the "U"-shaped bayonet through a spring, and a ball is movably embedded on the sliding block.

6. The device for coating a polymer protective layer on the surface of a capacitor metallized film according to claim 3, characterized in that: The method for using the device for coating the polymer protective layer on the surface of the capacitor metallized film comprises the following steps: S1, in a vacuum environment, the film is transported by a film transport mechanism; S2, the film passes through the aluminum evaporation component and the zinc evaporation component to complete aluminum plating and zinc plating respectively; S3, the polymer enters the evaporation platform through the filling pipe. The temperature of the evaporation platform is 200-350°C. The polymer vaporizes at high temperature and is sprayed toward the film from the spray nozzle to form a polymer layer. S4, curing the high molecular polymer layer formed on the surface of the film through a curing component.

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