Capacitance film stretching device and stretching method thereof

Abstract

The invention belongs to the technical field of capacitor film processing, and particularly discloses a capacitor film stretching device and a stretching method.The capacitor film stretching device comprises a conveying box, a capacitor film body and a plurality of overflow holes, a top cover is arranged at the top of the conveying box, and a plurality of conveying rollers are rotationally arranged between the inner walls of the two sides of the conveying box; the capacitance film body is arranged between the multiple conveying rollers, adjusting grooves are formed in the inner walls of the two sides of the conveying box, and sliding blocks are slidably arranged between the inner walls of the two adjusting grooves. When the temperature of the capacitance film body is too high, the induction adjusting assembly can be triggered to work, and the coating assembly is opened under triggering of the induction adjusting assembly; the capacitor film body is coated and cooled, meanwhile, the edge part of the capacitor film body is subjected to printing treatment, so that subsequent searching by people is facilitated, after coating, the feedback assembly is triggered, the coating assembly is closed, then external airflow is introduced, and the capacitor film body is blown to accelerate cooling.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitor film processing, and particularly relates to a capacitor film stretching device and a stretching method thereof. Background Art

[0002] A thin film capacitor is a plastic film capacitor with a metal foil as the electrode and a plastic film as the dielectric. The metal foil and plastic films such as polyethylene terephthalate, polypropylene, polystyrene, or polycarbonate are overlapped at both ends and wound into a cylindrical structure. When processing the capacitor film, it is necessary to continuously stretch the wound capacitor film without interruption. After stretching, the molecules of the capacitor film will be arranged neatly, thereby improving the dielectric constant of the capacitor film and increasing the capacitance of the capacitor. At the same time, the capacitor film can also improve the mechanical properties and thermal stability of the capacitor film after stretching treatment, making the manufactured thin film capacitor more durable.

[0003] Currently, when stretching the capacitor film, it is necessary to heat the capacitor film. The capacitor film heated within a certain temperature range is convenient for stretching and extension. However, during the heating process, the temperature will change. When the temperature is relatively high, the capacitor film is prone to breakage or uneven stretching during stretching, and since the capacitor film is stretched continuously in a roll without interruption during stretching, it is very difficult to find the specific position of the stretching section generated at a higher temperature during subsequent detection. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a capacitor film stretching device and a stretching method thereof.

[0005] To achieve the above object, the present invention adopts the following technical solution: A capacitor film stretching device includes a conveying box, a capacitor film body, and a plurality of overflow holes. A top cover is provided on the top of the conveying box. A plurality of conveying rollers are rotatably arranged between the inner walls on both sides of the conveying box. The capacitor film body is arranged between the plurality of conveying rollers. Adjusting grooves are opened on the inner walls on both sides of the conveying box. Sliders are slidably arranged between the inner walls of the two adjusting grooves. A coating roller is rotatably arranged between the opposite sides of the two sliders. A coating assembly is arranged between one end of the coating roller and one of the sliders;

[0006] A plurality of induction adjustment components are arranged inside the coating roller. A feedback component is arranged between the other end of the coating roller and the other slider. A support roller is rotatably arranged between the inner walls on both sides of the conveying box directly below the coating roller. The capacitor film body is located between the outer surfaces of the support roller and the coating roller.

[0007] Preferably, a backing plate is fixed to the top of the conveying box. A screw rod is rotatably arranged on the top of the backing plate. A turntable is fixed to the top of the screw rod. An adjusting frame threadedly connected to the screw rod is arranged above the backing plate. The bottom ends of both sides of the adjusting frame slide through the inside of the adjusting groove and are fixed to the top of the slider. Electric heating plates are arranged inside both side walls of the conveying box. A plurality of power supply wires connected to the electric heating plates are arranged on one side of the conveying box. Ring gears are fixed to the outer surfaces of both the coating roller and the support roller, and the two ring gears mesh with each other.

[0008] Preferably, the coating assembly includes a feeding cavity which is opened in one of the sliders. One end of the coating roller extends into the inside of the feeding cavity. A buffer cavity is opened in the inside of one of the sliders. A connecting port penetrating into the inside of the feeding cavity is opened on one side inner wall of the buffer cavity. A plurality of filter holes penetrating to the outer surface of the slider are equidistantly opened on the other side inner wall of the buffer cavity. A plurality of side flow channels are equidistantly arranged along the circumferential direction inside the coating roller. One end of each of the plurality of side flow channels penetrates to one end of the coating roller and is communicated with the feeding cavity. A plurality of overflow holes are arranged on the outer surface of the coating roller and are correspondingly communicated with the side flow channels.

[0009] Preferably, an oil cavity is opened inside the side wall of the conveying box. A branch pipe penetrating into the inside of the oil cavity is fixed to one side of the conveying box. A diversion hole penetrating to the inside of the adjusting groove is opened on the inner bottom surface of the oil cavity.

[0010] Preferably, the induction adjusting assembly includes a reciprocating strip. A counterbore is opened near the edge of the other end inside the coating roller. A counterbore block is arranged inside the counterbore. A plurality of reciprocating channels are opened inside the coating roller. The reciprocating strip is correspondingly slidably connected between the inner walls of the reciprocating channels. The overflow holes penetrate through the reciprocating channels. A plurality of through holes are equidistantly opened on one side of the reciprocating strip.

[0011] Preferably, a plurality of cylindrical cavities are opened near one end inside the coating roller. An installation groove is opened on one side of each of the plurality of cylindrical cavities. The other side of each of the plurality of cylindrical cavities is communicated with one end of the reciprocating channel. One end of the reciprocating strip is located inside the cylindrical cavity and extends into the installation groove. A guide plate is slidably arranged between the inner walls of the cylindrical cavity and is fixed to the outer surface of the reciprocating strip. A first spring is fixed between one side of the guide plate and one side inner wall of the cylindrical cavity. An arc-shaped bimetallic sheet is fixed to one side inner wall of the installation groove. One end of the arc-shaped bimetallic sheet is attached to one end of the reciprocating strip. The other ends of the plurality of reciprocating strips all slide through the inside of the counterbore and are fixed to the outer surface of the counterbore block.

[0012] Preferably, the feedback component includes a rectangular plate. An inner cavity is formed inside the reciprocating strip. The rectangular plate is slidably connected between the inner walls of the inner cavity. An inner flow channel is formed inside the rectangular plate. A plurality of side holes penetrating through the outer surface of the rectangular plate are equidistantly formed on one inner wall of the inner flow channel. A plurality of strip-shaped openings penetrating through to the other outer surface are equidistantly formed on one outer surface of the rectangular plate.

[0013] Preferably, an annular cavity is formed inside the countersunk head block near the top edge. The bottom surface of the annular cavity is convex near the outer edge. An annular plate is arranged inside the annular cavity. The bottom of the rectangular plate slidably penetrates into the annular cavity and is fixed to the top of the annular plate. The bottom edge of the annular plate is in contact with the convex part of the bottom surface of the annular cavity. A third spring is fixed between the bottom of the annular plate and the bottom surface of the annular cavity. A plurality of bending holes are formed inside the inner side of the annular plate. One ends of the plurality of bending holes are correspondingly communicated with one end of the inner flow channel.

[0014] Preferably, an air cavity is formed inside the countersunk head block near the top edge. A plurality of air guide holes penetrating through to the inside of the annular cavity are equidistantly formed on the inner wall of the air cavity. A hollow tube is installed inside the other slider. One end of the hollow tube is closed and slidably penetrates into the bottom surface inside the air cavity. A plurality of grid openings are equidistantly formed on the outer surface of the hollow tube near the closed end. A rectangular cavity is formed inside the other slider. The other end of the hollow tube communicates with the inside of the rectangular cavity. An air inlet channel communicating with the inside of the rectangular cavity is formed inside one end of the adjusting frame. One end of the air inlet channel penetrates through to the outside of the adjusting frame. A docking tube communicating with the air inlet channel is fixed to the outside of the adjusting frame. Three transmission cavities are equidistantly formed inside the coating roller. Three arc-shaped storage grooves are formed on the outer surface of the coating roller. Arc-shaped printing strips are arranged inside the three arc-shaped storage grooves. A contact rod is arranged inside the transmission cavity. A conical ring is fixed to the outer surface of the contact rod. A second spring is fixed between one side of the conical ring and one inner wall of the transmission cavity. One end of the contact rod slidably penetrates into the arc-shaped storage groove and is fixed to the arc-shaped printing strip. The other end of the contact rod slidably penetrates into the countersunk head groove. A plurality of support rods are equidistantly fixed to the bottom of the annular plate. The bottoms of the plurality of support rods all slidably penetrate into the transmission cavity and are in contact with the outer surface of the conical ring.

[0015] The present invention also provides a capacitance film stretching method, which is applied to a capacitance film stretching device. The capacitance film stretching method includes the following steps:

[0016] Step S1: The capacitor film body is conveyed by the conveying rollers. When the temperature is too high, the induction adjustment component is triggered to work, causing the coating component to open, coating and cooling the capacitor film body, and at the same time performing printing treatment on the capacitor film body. After coating, the feedback component is triggered to close the coating component, and then external air flow is introduced to blow and accelerate the cooling of the capacitor film body;

[0017] Step S2: The oil fluid flows from the diversion hole at the bottom of the oil cavity to one side of the slider. Under the filtration of the filter holes, the oil fluid flows into the interior of the buffer cavity, and then enters the interior of the material cavity through the connection port. When the coating roller rotates, the oil fluid enters the interior of the side flow channel and then flows out from the overflow hole to the outer surface of the coating roller;

[0018] Step S3: When the temperature of the capacitor film body is relatively high, passing through the coating roller will cause the coating roller to heat up. The arc-shaped bimetallic strip will produce elastic deformation when the temperature rises, pushing the reciprocating strip to one side, making the through hole opposite to the overflow hole. At this time, the cooling oil fluid inside the side flow channel flows out to the outer surface of the coating roller to coat and cool the capacitor film body;

[0019] Step S4: When the through hole slides to coincide with the axis line of the overflow hole, the feedback component is triggered to work, causing the rectangular plate to slide to one side inside the inner cavity, so that the strip-shaped opening slides to the other side of the overflow hole, and the side hole slides to the position opposite to the overflow hole. At this time, the overflow hole can be closed on one side through the rectangular plate, and the externally supplied air flow can be ejected from the other side of the overflow hole to the outside of the coating roller through the side hole.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. During the process of conveying the capacitor film body in the present invention, when the temperature is too high, the induction adjustment component is triggered to work. Under the trigger of the induction adjustment component, the coating component is opened to coat and cool the capacitor film body, and at the same time, the edge part of the capacitor film body is printed, which is convenient for people to search later. After coating, the feedback component is triggered to close the coating component, and then external air flow is introduced to blow and accelerate the cooling of the capacitor film body;

[0022] 2. In the present invention, when the coating component works, the cooling oil fluid is guided into the interior of the material cavity. When the coating roller rotates, since one end of the side flow channel is connected to the material cavity, the oil fluid can enter the interior of the side flow channel and then flow out from the overflow hole to the outer surface of the coating roller;

[0023] 3. In the present invention, when the induction adjustment component works, when the temperature of the capacitor film body is relatively high, the arc-shaped bimetallic strip will produce elastic deformation when the temperature rises, and then push the reciprocating strip to one side, making the through hole on the reciprocating strip opposite to the overflow hole, so that the cooling oil fluid inside the side flow channel can flow out to the outer surface of the coating roller to coat and cool the outer surface of the capacitor film body;

[0024] 4. In the present invention, when the feedback component is working, the rectangular plate slides to one side inside the inner cavity, so that the strip-shaped opening slides to the other side of the overflow hole, and the side hole slides to the position opposite to the overflow hole. At this time, the overflow hole can be closed on one side by the rectangular plate, and the externally supplied air flow can be ejected from the other side of the overflow hole to the outside of the coating roller through the side hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic perspective view of one side of a capacitance film stretching device proposed by the present invention;

[0026] Figure 2 is a schematic perspective view of the other side of a capacitance film stretching device proposed by the present invention;

[0027] Figure 3 is a schematic perspective sectional view of one side of a capacitance film stretching device proposed by the present invention;

[0028] Figure 4 is a schematic perspective sectional view of the other side of a capacitance film stretching device proposed by the present invention;

[0029] Figure 5 is a schematic perspective front view of a coating roller in a capacitance film stretching device proposed by the present invention;

[0030] Figure 6 is a schematic perspective sectional view of a coating roller in a capacitance film stretching device proposed by the present invention;

[0031] Figure 7 is an assembled and disassembled sectional view of a reciprocating strip and a rectangular plate in a capacitance film stretching device proposed by the present invention;

[0032] Figure 8 of the present invention Figure 4 is a partial enlarged view of part A in;

[0033] Figure 9 of the present invention Figure 5 is a partial enlarged view of part B in;

[0034] Figure 10 of the present invention Figure 6 is a partial enlarged view of part C in;

[0035] Figure 11 of the present invention Figure 6 is a partial enlarged view of part D in.

[0036] In the figure: 1, conveying box; 2, top cover; 3, backing plate; 4, adjusting frame; 5, screw; 6, turntable; 7, conveying roller; 8, power supply wire; 9, electric heating plate; 10, capacitor film body; 11, coating roller; 12, supporting roller; 13, annular gear; 14, oil cavity; 15, branch pipe; 16, docking pipe; 17, arc-shaped storage groove; 18, arc-shaped printing strip; 19, adjusting groove; 20, slider; 21, diversion hole; 22, buffer cavity; 23, filter hole; 24, feeding cavity; 25, connection port; 26, side flow channel; 27, air intake channel; 28, rectangular cavity; 29, hollow pipe; 30, overflow hole; 31, installation groove; 32, arc-shaped bimetallic strip; 33, cylindrical cavity; 34, guide plate; 35, first spring; 36, reciprocating channel; 37, reciprocating strip; 38, inner cavity; 39, rectangular plate; 40, through hole; 41, strip-shaped opening; 42, inner flow channel; 43, side hole; 44, transmission cavity; 45, contact rod; 46, conical ring; 47, second spring; 48, support rod; 49, air cavity; 50, grid opening; 51, air guide hole; 52, annular cavity; 53, annular plate; 54, third spring; 55, bending hole; 56, counterbore; 57, counterbore block. Specific implementation manner

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figure 1-11 , the present invention provides a technical solution: a capacitor film stretching device, including a conveying box 1, a capacitor film body 10 and a plurality of overflow holes 30. A top cover 2 is arranged on the top of the conveying box 1. A plurality of conveying rollers 7 are rotatably arranged between the inner walls on both sides of the conveying box 1. The capacitor film body 10 is arranged between the plurality of conveying rollers 7. Adjusting grooves 19 are opened on the inner walls on both sides of the conveying box 1. Sliders 20 are slidably arranged between the inner walls of the two adjusting grooves 19. A coating roller 11 is rotatably arranged between the opposite sides of the two sliders 20. A coating assembly is arranged between one end of the coating roller 11 and one of the sliders 20;

[0039] Multiple induction adjustment components are arranged inside the coating roller 11. A feedback component is arranged between the other end of the coating roller 11 and another slider 20. A support roller 12 is rotatably arranged between the inner walls on both sides of the conveying box 1 directly below the coating roller 11. The capacitive film body 10 is located between the outer surfaces of the support roller 12 and the coating roller 11. A backing plate 3 is fixed to the top of the conveying box 1. A screw rod 5 is rotatably arranged on the top of the backing plate 3. A turntable 6 is fixed to the top of the screw rod 5. An adjustment frame 4 threadedly connected to the screw rod 5 is arranged above the backing plate 3. The bottom ends of both ends of the adjustment frame 4 slide through the inside of the adjustment groove 19 and are fixed to the top of the slider 20. Electric heating plates 9 are arranged inside the side walls of both sides of the conveying box 1. A plurality of power supply wires 8 connected to the electric heating plates 9 are arranged on one side of the conveying box 1. Ring gears 13 are fixed to the outer surfaces of both the coating roller 11 and the support roller 12, and the two ring gears 13 mesh with each other.

[0040] The achieved effects are as follows: Place the capacitive film body 10 inside the conveying box 1, convey the capacitive film body 10 through the conveying roller 7, and rotate the turntable 6 to drive the screw rod 5 to rotate, thereby making the adjustment frame 4 move, and then changing the position of the slider 20 inside the adjustment groove 19 to change the distance between the support roller 12 and the coating roller 11, facilitating the pressing of capacitive film bodies 10 with different thicknesses. During the conveying process, heat up the inside of the conveying box 1 through the electric heating plate 9, so that the capacitive film body 10 is heated during the conveying process. And a support roller 12 and a coating roller 11 are arranged in the middle part of the conveying box 1, facilitating the detection of whether the temperature of the capacitive film body 10 is too high. When the temperature is too high, it will trigger the induction adjustment component to work. Under the trigger of the induction adjustment component, the coating component is opened to coat and cool the capacitive film body 10, and at the same time, the edge part of the capacitive film body 10 is printed, facilitating subsequent search by people. After coating, the feedback component will be triggered to close the coating component, and then external air flow is introduced to blow and accelerate the cooling of the capacitive film body 10. In the initial state, the slider 20 is at the inner top surface of the adjustment groove 19. At this time, the outer surface of the slider 20 fits with the communicating part between the diversion hole 21 and the adjustment groove 19, thereby closing the diversion hole 21. In the working state, since the slider 20 slides downward in the adjustment groove 19, one end of the diversion hole 21 corresponds to the filter hole 23. At this time, the oil liquid inside the diversion hole 21 can enter the buffer cavity 22 through the filter hole 23. Ring gears 13 are fixed to the outer surfaces of both the support roller 12 and the coating roller 11, and the two ring gears 13 mesh with each other, and the number of teeth of the large and small teeth of the two ring gears 13 is the same, so as to ensure the synchronous rotation of the support roller 12 and the coating roller 11.

[0041] Such as Figure 4 、 Figure 5 、 Figure 6 and Figure 8As shown, the coating assembly includes a feeding cavity 24 which is opened inside one of the sliders 20. One end of the coating roller 11 extends into the inside of the feeding cavity 24. A buffer cavity 22 is opened inside one of the sliders 20. A connecting port 25 penetrating through to the inside of the feeding cavity 24 is opened on one inner wall of the buffer cavity 22. A plurality of filter holes 23 penetrating through to the outer surface of the slider 20 are equidistantly opened on the other inner wall of the buffer cavity 22. A plurality of side flow channels 26 are equidistantly opened along the circumferential direction inside the coating roller 11. One end of each of the plurality of side flow channels 26 penetrates through to one end of the coating roller 11 and is in communication with the feeding cavity 24. A plurality of overflow holes 30 are arranged on the outer surface of the coating roller 11 and are correspondingly in communication with the side flow channels 26. An oil cavity 14 is opened inside the side wall of the conveying box 1. A branch pipe 15 penetrating through to the inside of the oil cavity 14 is fixed on one side of the conveying box 1. A diversion hole 21 penetrating through to the inside of the adjustment groove 19 is opened on the inner bottom surface of the oil cavity 14.

[0042] The achieved effect is that the cooling oil liquid is injected into the inside of the oil cavity 14 through the branch pipe 15. The oil liquid flows from the diversion hole 21 at the bottom of the oil cavity 14 to one side of the slider 20. Under the filtration of the filter holes 23, the oil liquid flows into the inside of the buffer cavity 22, and then flows into the inside of the feeding cavity 24 through the connecting port 25. When the coating roller 11 rotates, since one end of each of the side flow channels 26 is in communication with the feeding cavity 24, the oil liquid can enter the inside of the side flow channels 26, and then flow from the overflow holes 30 to the outer surface of the coating roller 11. When the oil liquid flows out from the inside of the overflow holes 30, it is controlled by the induction adjustment component and the feedback component.

[0043] As Figure 6 、 Figure 7 and Figure 10 shown, the induction adjustment component includes a reciprocating strip 37. A counterbore 56 is opened inside the coating roller 11 near the edge of the other end. A counterbore block 57 is arranged inside the counterbore 56. A plurality of reciprocating channels 36 are opened inside the coating roller 11. The reciprocating strip 37 is correspondingly slidably connected between the inner walls of the reciprocating channels 36. The overflow holes 30 penetrate through the reciprocating channels 36. A plurality of through holes 40 are equidistantly opened on one side of the reciprocating strip 37. A plurality of cylindrical cavities 33 are opened inside the coating roller 11 near one end. An installation groove 31 is opened on one side of each of the plurality of cylindrical cavities 33. The other side of each of the plurality of cylindrical cavities 33 is in communication with one end of the reciprocating channel 36. One end of the reciprocating strip 37 is located inside the cylindrical cavity 33 and extends into the installation groove 31. A guide plate 34 is slidably arranged between the inner walls of the cylindrical cavity 33. The guide plate 34 is fixed on the outer surface of the reciprocating strip 37. A first spring 35 is fixed between one side of the guide plate 34 and one inner wall of the cylindrical cavity 33. An arc-shaped bimetallic sheet 32 is fixed on one inner wall of the installation groove 31. One end of the arc-shaped bimetallic sheet 32 is in contact with one end of the reciprocating strip 37. The other ends of the plurality of reciprocating strips 37 all slide through to the inside of the counterbore 56 and are all fixed on the outer surface of the counterbore block 57.

[0044] The achieved effect is that when the temperature of the capacitor film body 10 is relatively high, passing through the coating roller 11 will cause the coating roller 11 to heat up. At this time, the arc-shaped bimetallic strip 32 in the installation groove 31 inside the coating roller 11 will undergo elastic deformation when the temperature rises, and then push the reciprocating strip 37 to one side, making the through hole 40 on the reciprocating strip 37 opposite to the overflow hole 30, so that the cooling oil in the side flow channel 26 can flow out to the outer surface of the coating roller 11 to coat and cool the outer surface of the capacitor film body 10. During the process of the reciprocating strip 37 being pushed to one side, it will also drive the countersunk head block 57 to slide towards the bottom of the countersunk head groove 56. During the sliding process, since the bottom of the support rod 48 has not completely slid to one side of the outer surface of the conical ring 46, the annular plate 53 remains stationary inside the annular cavity 52. However, due to the countersunk head block 57 sliding towards the bottom of the countersunk head groove 56, a gap will be formed between the bottom of the annular plate 53 and the protruding part on one side of the annular cavity 52. At this time, the third spring 54 is in a stretched state.

[0045] Such as Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 9 、 Figure 10 and Figure 11As shown, the feedback component includes a rectangular plate 39. An inner cavity 38 is formed inside the reciprocating bar 37. The rectangular plate 39 is slidably connected between the inner walls of the inner cavity 38. An inner flow channel 42 is formed inside the rectangular plate 39. A plurality of side holes 43 penetrating to the outer surface of the rectangular plate 39 are equidistantly formed on one inner wall of the inner flow channel 42. A plurality of strip-shaped openings 41 penetrating to the other outer surface are equidistantly formed on one outer surface of the rectangular plate 39. An annular cavity 52 is formed inside the countersunk head block 57 near the top edge. The bottom surface of the annular cavity 52 is convex near the outer edge. An annular plate 53 is arranged inside the annular cavity 52. The bottom of the rectangular plate 39 slidably penetrates into the annular cavity 52 and is fixed to the top of the annular plate 53. The bottom edge of the annular plate 53 is in mutual fit with the convex part of the bottom surface of the annular cavity 52. A third spring 54 is fixed between the bottom of the annular plate 53 and the bottom surface of the annular cavity 52. A plurality of bending holes 55 are formed inside the annular plate 53. One end of each of the plurality of bending holes 55 is correspondingly communicated with one end of the inner flow channel 42. An air cavity 49 is formed inside the countersunk head block 57 near the top edge. A plurality of air guide holes 51 penetrating to the inside of the annular cavity 52 are equidistantly formed on the inner wall of the air cavity 49. A hollow tube 29 is installed inside another slider 20. One end of the hollow tube 29 is closed and slidably penetrates to the inner bottom surface of the air cavity 49. A plurality of grid openings 50 are equidistantly formed on the outer surface of the hollow tube 29 near the closed end. A rectangular cavity 28 is formed inside another slider 20. The other end of the hollow tube 29 communicates with the inside of the rectangular cavity 28. An air inlet channel 27 communicating with the inside of the rectangular cavity 28 is formed inside one end of the adjusting frame 4. One end of the air inlet channel 27 penetrates to the outside of the adjusting frame 4. A docking tube 16 communicating with the air inlet channel 27 is fixed to the outside of the adjusting frame 4. Three transmission cavities 44 are equidistantly formed inside the coating roller 11. Three arc-shaped storage grooves 17 are formed on the outer surface of the coating roller 11. Arc-shaped printing strips 18 are arranged inside each of the three arc-shaped storage grooves 17. A contact rod 45 is arranged inside the transmission cavity 44. A conical ring 46 is fixed to the outer surface of the contact rod 45. A second spring 47 is fixed between one side of the conical ring 46 and one inner wall of the transmission cavity 44. One end of the contact rod 45 slidably penetrates into the arc-shaped storage groove 17 and is fixed to the arc-shaped printing strip 18. The other end of the contact rod 45 slidably penetrates into the countersunk head groove 56. A plurality of support rods 48 are equidistantly fixed to the bottom of the annular plate 53. The bottom of each of the plurality of support rods 48 slidably penetrates into the transmission cavity 44 and is in mutual fit with the outer surface of the conical ring 46.

[0046] The achieved effect is that during the process of the countersunk block 57 sliding towards the bottom of the countersunk groove 56, the grid openings 50 on the outer surface of the hollow tube 29 will rise into the interior of the air chamber 49. At this time, the high-pressure gas connected through the docking tube 16 externally can enter the interior of the rectangular chamber 28 through the air intake channel 27, then enter the hollow tube 29 through the rectangular chamber 28, and finally enter the interior of the annular chamber 52 through the air guide holes 51 on the air chamber 49. Since the rectangular plate 39 does not slide at this time and the side holes 43 are in mutual contact with the inner wall of the inner cavity 38, the air flow cannot be discharged to the outside. When the through holes 40 on the reciprocating strip 37 slide to coincide with the axis line of the overflow hole 30, at this time, the bottom of the countersunk block 57 slides to the inner bottom surface of the countersunk groove 56, and under the push of the outer surface of the countersunk block 57, the contact rod 45 can be pushed outwards, thereby driving the arc-shaped printing strip 18 to slide outwards, enabling it to print on the outer surface edge of the capacitor film body 10. And at this time, the bottom of the support rod 48 completely slides to one side of the outer surface of the conical ring 46, and under the elastic pulling force of the third spring 54, it can drive the annular plate 53 to slide downwards to the position where it is in contact with the inner bottom surface of the annular chamber 52. At the same time, it drives the rectangular plate 39 to slide to one side inside the inner cavity 38, so that the strip-shaped opening 41 slides to the other side of the overflow hole 30, and the side hole 43 slides to the position opposite to the overflow hole 30. At this time, the overflow hole 30 can be closed on one side through the rectangular plate 39, and the externally supplied air flow can be ejected from the other side of the overflow hole 30 through the side hole 43 to the outside of the coating roller 11, to accelerate the cooling of the conveyed capacitor film body 10.

[0047] For example, in one embodiment, the present invention further provides a method for stretching a capacitor film, which is applied to a capacitor film stretching device as described above, and includes the following steps:

[0048] Step S1: The capacitor film body 10 is conveyed through the conveying roller 7. When the temperature is too high, the induction adjustment component will be triggered to work, causing the coating component to open, coating and cooling the capacitor film body 10, and at the same time performing a printing process on the capacitor film body 10. After coating, the feedback component will be triggered to close the coating component, and then external air flow is introduced to blow and accelerate the cooling of the capacitor film body 10;

[0049] Step S2: The oil liquid flows from the diversion hole 21 at the bottom of the oil chamber 14 to one side of the slider 20. Under the filtration of the filter holes 23, the oil liquid flows into the interior of the buffer chamber 22, and then enters the material chamber 24 through the connection port 25. When the coating roller 11 rotates, the oil liquid enters the interior of the side flow channel 26 and then flows from the overflow hole 30 to the outer surface of the coating roller 11;

[0050] Step S3: When the temperature of the capacitor film body 10 is relatively high, passing through the coating roller 11 will cause the coating roller 11 to heat up. The arc-shaped bimetallic strip 32 will undergo elastic deformation when the temperature rises, pushing the reciprocating strip 37 to one side, making the through hole 40 face the overflow hole 30. At this time, the cooling oil in the side flow channel 26 flows out to the outer surface of the coating roller 11 to cool the coating of the capacitor film body 10.

[0051] Step S4: When the through hole 40 slides to coincide with the axis of the overflow hole 30, it will trigger the feedback component to work, causing the rectangular plate 39 to slide to one side inside the inner cavity 38, so that the strip-shaped opening 41 slides to the other side of the overflow hole 30, and the side hole 43 slides to face the overflow hole 30. At this time, the overflow hole 30 can be closed on one side by the rectangular plate 39, and the externally supplied air flow can be ejected from the other side of the overflow hole 30 to the outside of the coating roller 11 through the side hole 43.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A capacitance film stretching device, characterized in that, It includes a conveying box (1), a capacitor film body (10) and a plurality of overflow holes (30). A top cover (2) is provided on the top of the conveying box (1). A plurality of conveying rollers (7) are rotatably arranged between the inner walls on both sides of the conveying box (1). The capacitor film body (10) is arranged between the plurality of conveying rollers (7). Adjusting grooves (19) are formed in the inner walls on both sides of the conveying box (1). Sliders (20) are slidably arranged between the inner walls of the two adjusting grooves (19). A coating roller (11) is rotatably arranged between the opposite sides of the two sliders (20). A coating assembly is arranged between one end of the coating roller (11) and one of the sliders (20). A plurality of induction adjusting components are arranged inside the coating roller (11). A feedback component is arranged between the other end of the coating roller (11) and the other slider (20). A support roller (12) is rotatably arranged between the inner walls on both sides of the conveying box (1) directly below the coating roller (11). The capacitor film body (10) is located between the outer surfaces of the support roller (12) and the coating roller (11).

2. The capacitance film stretching device according to claim 1, characterized in that: A backing plate (3) is fixed on the top of the conveying box (1). A screw rod (5) is rotatably arranged on the top of the backing plate (3). A turntable (6) is fixed on the top of the screw rod (5). An adjusting frame (4) threadedly connected to the screw rod (5) is arranged above the backing plate (3). The bottoms of both ends of the adjusting frame (4) slide through the inside of the adjusting groove (19) and are fixed on the top of the slider (20). Electric heating plates (9) are arranged inside the side walls of both sides of the conveying box (1). A plurality of power supply wires (8) connected to the electric heating plates (9) are arranged on one side of the conveying box (1). Annular gears (13) are fixed on the outer surfaces of the coating roller (11) and the support roller (12). The two annular gears (13) are meshed with each other.

3. A capacitance film stretching device according to claim 1, characterized in that: The coating assembly includes a feeding cavity (24). The feeding cavity (24) is formed inside one of the sliders (20). One end of the coating roller (11) extends into the inside of the feeding cavity (24). A buffer cavity (22) is formed inside one of the sliders (20). A connection port (25) penetrating into the inside of the feeding cavity (24) is formed on one inner wall of the buffer cavity (22). A plurality of filter holes (23) penetrating to the outer surface of the slider (20) are equidistantly formed on the other inner wall of the buffer cavity (22). A plurality of side flow channels (26) are equidistantly formed inside the coating roller (11) along the circumferential direction. One end of each of the plurality of side flow channels (26) penetrates to one end of the coating roller (11) and is communicated with the feeding cavity (24). The plurality of overflow holes (30) are arranged on the outer surface of the coating roller (11) and are correspondingly communicated with the side flow channels (26).

4. The stretching device for a capacitor film according to claim 3, characterized in that: An oil cavity (14) is formed inside the side wall of the conveying box (1). A branch pipe (15) penetrating into the inside of the oil cavity (14) is fixed on one side of the conveying box (1). A diversion hole (21) penetrating into the inside of the adjusting groove (19) is formed on the inner bottom surface of the oil cavity (14).

5. The stretching device for a capacitive film according to claim 2, characterized in that: The induction adjustment component includes a reciprocating strip (37). A countersunk groove (56) is formed inside the coating roller (11) near the edge of the other end. A countersunk block (57) is arranged inside the countersunk groove (56). A plurality of reciprocating channels (36) are formed inside the coating roller (11). The reciprocating strip (37) is correspondingly slidably connected between the inner walls of the reciprocating channels (36). The overflow hole (30) penetrates through the reciprocating channels (36). A plurality of through holes (40) are equidistantly formed on one side of the reciprocating strip (37).

6. The capacitive film stretching device according to claim 5, wherein: A plurality of cylindrical cavities (33) are formed inside the coating roller (11) near one end. Mounting grooves (31) are formed on one side of each of the plurality of cylindrical cavities (33). The other side of each of the plurality of cylindrical cavities (33) communicates with one end of the reciprocating channels (36). One end of the reciprocating strip (37) is located inside the cylindrical cavity (33) and extends into the mounting groove (31). A guide plate (34) is slidably arranged between the inner walls of the cylindrical cavity (33). The guide plate (34) is fixed on the outer surface of the reciprocating strip (37). A first spring (35) is fixed between one side of the guide plate (34) and one side inner wall of the cylindrical cavity (33). An arc-shaped bimetallic sheet (32) is fixed on one side inner wall of the mounting groove (31). One end of the arc-shaped bimetallic sheet (32) is in contact with one end of the reciprocating strip (37). The other ends of the plurality of reciprocating strips (37) all slide through to the inside of the countersunk groove (56) and are all fixed on the outer surface of the countersunk block (57).

7. The capacitance film stretching device according to claim 5, wherein: The feedback component includes a rectangular plate (39). An inner cavity (38) is formed inside the reciprocating strip (37). The rectangular plate (39) is slidably connected between the inner walls of the inner cavity (38). An inner flow channel (42) is formed inside the rectangular plate (39). A plurality of side holes (43) penetrating through to the outer surface of the rectangular plate (39) are equidistantly formed on one side inner wall of the inner flow channel (42). A plurality of strip-shaped openings (41) penetrating through to the outer surface of the other side are equidistantly formed on one side outer surface of the rectangular plate (39).

8. A capacitance film stretching device according to claim 7, characterized in that: An annular cavity (52) is formed inside the countersunk block (57) near the top edge. The bottom surface of the annular cavity (52) is convex near the outer edge. An annular plate (53) is arranged inside the annular cavity (52). The bottom of the rectangular plate (39) slides through to the inside of the annular cavity (52) and is fixed on the top of the annular plate (53). The bottom edge of the annular plate (53) is in contact with the convex part of the bottom surface of the annular cavity (52). A third spring (54) is fixed between the bottom of the annular plate (53) and the bottom surface of the annular cavity (52). A plurality of bending holes (55) are formed inside the inner side of the annular plate (53). One end of each of the plurality of bending holes (55) correspondingly communicates with one end of the inner flow channel (42).

9. A capacitance film stretching device according to claim 8, characterized in that: An air cavity (49) is formed inside the countersunk head block (57) near the top edge. A plurality of air guide holes (51) penetrating through the inner wall of the air cavity (49) to the inside of the annular cavity (52) are equidistantly arranged on the inner wall of the air cavity (49). A hollow tube (29) is installed inside the other slider (20). One end of the hollow tube (29) is closed and slidably penetrates through the inner bottom surface of the air cavity (49). A plurality of grid openings (50) are equidistantly arranged on the outer surface of the hollow tube (29) near the closed end. A rectangular cavity (28) is formed inside the other slider (20). The other end of the hollow tube (29) communicates with the inside of the rectangular cavity (28). An air inlet channel (27) communicating with the inside of the rectangular cavity (28) is formed inside one end of the adjusting frame (4). One end of the air inlet channel (27) penetrates through the outside of the adjusting frame (4). A docking pipe (16) communicating with the air inlet channel (27) is fixed on the outside of the adjusting frame (4). Three transmission cavities (44) are equidistantly arranged inside the coating roller (11). Three arc-shaped storage grooves (17) are formed on the outer surface of the coating roller (11). Arc-shaped printing strips (18) are arranged inside the three arc-shaped storage grooves (17). A contact rod (45) is arranged inside the transmission cavity (44). A conical ring (46) is fixed on the outer surface of the contact rod (45). A second spring (47) is fixed between one side of the conical ring (46) and the inner wall of one side of the transmission cavity (44). One end of the contact rod (45) slidably penetrates through the inside of the arc-shaped storage groove (17) and is fixed on the arc-shaped printing strip (18). The other end of the contact rod (45) slidably penetrates through the inside of the countersunk head groove (56). A plurality of support rods (48) are equidistantly fixed on the bottom of the annular plate (53). The bottoms of the plurality of support rods (48) all slidably penetrate through the inside of the transmission cavity (44) and are in contact with the outer surface of the conical ring (46).

10. A method for stretching a capacitive film, which is applied to a capacitive film stretching device according to any one of claims 1-9, characterized in that, Including the following steps: Step SI: The capacitor film body (10) is conveyed by the conveying roller (7). When the temperature is too high, the induction adjustment component is triggered to work, so that the coating component is opened to coat and cool the capacitor film body (10), and at the same time, the capacitor film body (10) is printed. After coating, the feedback component is triggered to close the coating component, and then external air flow is introduced to blow and accelerate the cooling of the capacitor film body (10); Step S2: The oil liquid flows from the diversion hole (21) at the bottom of the oil cavity (14) to one side of the slider (20). Under the filtration of the filter holes (23), the oil liquid flows into the inside of the buffer cavity (22), and then flows into the material cavity (24) through the connection port (25). When the coating roller (11) rotates, the oil liquid enters the inside of the side flow channel (26) and then flows from the overflow hole (30) to the outer surface of the coating roller (11); Step S3: When the temperature of the capacitor film body (10) is relatively high, passing through the coating roller (11) will cause the coating roller (11) to heat up. The arc-shaped bimetallic strip (32) will undergo elastic deformation when the temperature rises, pushing the reciprocating strip (37) to one side, making the through hole (40) opposite to the overflow hole (30). At this time, the cooling oil in the side flow channel (26) flows out to the outer surface of the coating roller (11) to cool the coating of the capacitor film body (10). Step S4: When the through hole (40) slides to coincide with the axis of the overflow hole (30), it will trigger the feedback component to work, causing the rectangular plate (39) to slide to one side inside the inner cavity (38), so that the strip-shaped opening (41) slides to the other side of the overflow hole (30), and the side hole (43) slides to the position opposite to the overflow hole (30). At this time, the overflow hole (30) can be closed on one side by the rectangular plate (39), and the externally supplied air flow can be ejected from the other side of the overflow hole (30) to the outside of the coating roller (11) through the side hole (43).

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