Capacitor film stretching apparatus and stretching method thereof

Abstract

This invention belongs to the field of capacitor film processing technology, and specifically discloses a capacitor film stretching device and its stretching method, including a conveying box, a capacitor film body, and multiple overflow holes. The top of the conveying box is provided with a top cover, and multiple conveying rollers are rotatably arranged between the inner walls on both sides of the conveying box. The capacitor film body is arranged between the multiple conveying rollers. Adjustment grooves are opened on both inner walls of the conveying box, and sliders are slidably arranged between the inner walls of two adjustment grooves. In this invention, when the temperature of the capacitor film body is too high, the induction adjustment component will be triggered to work. Under the trigger of the induction adjustment component, the coating component will be opened to coat and cool the capacitor film body. At the same time, the edge of the capacitor film body will be printed to facilitate subsequent identification. After coating, the feedback component will be triggered to close the coating component, and then external airflow will be introduced to blow and accelerate the cooling of the capacitor film body.

Description

Technical Field

[0001] This invention relates to the field of capacitor film processing technology, and in particular to a capacitor film stretching device and its stretching method. Background Technology

[0002] Film capacitors are plastic film capacitors that use metal foil as electrodes and plastic film as dielectric. They are constructed by overlapping metal foil and plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate from both ends and then winding them into a cylindrical shape. During the manufacturing process, the rolled film needs to be continuously stretched. After stretching, the molecules of the film are aligned, which increases the dielectric constant and capacitance of the film. At the same time, the stretching process also improves the mechanical properties and thermal stability of the film, making the manufactured film capacitors more durable.

[0003] Currently, when stretching capacitor films, they need to be heated. Heating the capacitor film to a certain temperature range makes it easier to stretch and extend. However, the temperature will change during the heating process. When the temperature is high, the capacitor film is prone to breakage or uneven stretching. Furthermore, since the capacitor film is stretched continuously in rolls, it is difficult to find the specific location of the stretching segments generated at high temperatures during subsequent testing. 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 objectives, the present invention adopts the following technical solution: a capacitor film stretching device, comprising a conveying box, a capacitor film body and multiple overflow holes, wherein a top cover is provided on the top of the conveying box, multiple conveying rollers are rotatably arranged between the inner walls on both sides of the conveying box, the capacitor film body is disposed between the multiple conveying rollers, adjusting grooves are provided on both inner walls of the conveying box, sliders are slidably arranged between the inner walls of two adjusting grooves, a coating roller is rotatably arranged between the opposite sides of two sliders, and a coating component is provided between one end of the coating roller and one of the sliders;

[0006] The coating roller is equipped with multiple sensing and adjustment components inside. A feedback component is provided between the other end of the coating roller and another slider. A support roller is rotatably arranged between the inner walls of both sides of the conveying box, directly below the coating roller. The capacitor film body is located between the outer surface of the support roller and the coating roller.

[0007] Preferably, a pad is fixed to the top of the conveyor box, a screw is rotatably mounted on the top of the pad, a turntable is fixed to the top of the screw, an adjusting frame is threadedly connected to the screw above the pad, both ends of the adjusting frame slide through into the interior of the adjusting groove and are fixed to the top of the slider, electric heating plates are provided inside the side walls of the conveyor box, and multiple power supply wires connected to the electric heating plates are provided on one side of the conveyor box, and ring gears are fixed to the outer surface of the coating roller and the outer surface of the support roller, with two ring gears meshing with each other.

[0008] Preferably, the coating assembly includes a feeding chamber, which is located inside one of the sliders. One end of the coating roller extends into the feeding chamber. A buffer chamber is provided inside one of the sliders. A connection port penetrating into the feeding chamber is provided on one side inner wall of the buffer chamber. A plurality of filter holes penetrating to the outer surface of the slider are provided at equal intervals on the other side inner wall of the buffer chamber. A plurality of side channels are provided at equal intervals along the circumferential direction inside the coating roller. One end of each of the side channels penetrates to one end of the coating roller and is interconnected with the feeding chamber. A plurality of overflow holes are provided on the outer surface of the coating roller and are interconnected with the side channels.

[0009] Preferably, an oil cavity is provided inside the side wall of the conveying box, a branch pipe is fixed on one side of the conveying box and extends into the oil cavity, and a guide hole is provided on the bottom surface of the oil cavity and extends into the regulating groove.

[0010] Preferably, the sensing adjustment component includes a reciprocating strip, a countersunk groove is provided inside the coating roller near the other end edge, a countersunk block is provided inside the countersunk groove, a plurality of reciprocating channels are provided inside the coating roller, the reciprocating strip is slidably connected between the inner walls of the reciprocating channels, the overflow hole and the reciprocating channel are interconnected, and a plurality of through holes are provided at equal intervals on one side of the reciprocating strip.

[0011] Preferably, the coating roller has multiple cylindrical cavities near one end, each cylindrical cavity has a mounting groove on one side, and the other side of each cylindrical cavity is connected to one end of the reciprocating channel. One end of the reciprocating strip is located inside the cylindrical cavity and extends into the mounting groove. A guide plate is slidably disposed between the inner walls of the cylindrical cavities. The guide plate 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 of the inner wall of the cylindrical cavity. An arc-shaped bimetallic strip is fixed to one side of the inner wall of the mounting groove. One end of the arc-shaped bimetallic strip is in contact with one end of the reciprocating strip. The other ends of the multiple reciprocating strips slide through the interior of the countersunk groove and are all fixed to the outer surface of the countersunk block.

[0012] Preferably, the feedback component includes a rectangular plate, the reciprocating bar has an inner cavity, the rectangular plate is slidably connected between the inner walls of the inner cavity, the rectangular plate has an inner flow channel, one side inner wall of the inner flow channel has a plurality of side holes that penetrate to the outer surface of the rectangular plate at equal intervals, and one side outer surface of the rectangular plate has a plurality of strip-shaped openings that penetrate to the other side outer surface at equal intervals.

[0013] Preferably, the countersunk block has an annular cavity near its top edge, and the bottom surface of the annular cavity is convex near its outer edge. An annular plate is disposed inside the annular cavity, and the bottom of the rectangular plate slides through the annular cavity and is fixed to the top of the annular plate. The bottom edge of the annular plate fits against 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. Multiple bending holes are formed on the inner side of the annular plate, and one end of each of the multiple bending holes is connected to one end of the inner flow channel.

[0014] Preferably, the countersunk block has an air cavity near its top edge, and the inner wall of the air cavity has multiple air guide holes equidistantly extending into the annular cavity. Another slider has a hollow tube installed inside, one end of which is closed and slides through to the bottom surface of the air cavity. The outer surface of the hollow tube has multiple grid openings equidistantly near the closed end. Another slider has a rectangular cavity inside, and the other end of the hollow tube connects to the interior of the rectangular cavity. One end of the adjusting frame has an air intake channel connecting to the interior of the rectangular cavity, and one end of the air intake channel extends to the outside of the adjusting frame. The outside of the adjusting frame is fixed with a docking point communicating with the air intake channel. The tube has three equally spaced transmission chambers inside the coating roller, and three arc-shaped receiving grooves on the outer surface of the coating roller. Each of the three arc-shaped receiving grooves has an arc-shaped printing strip inside. A contact rod is provided inside the transmission chamber, and a conical ring is fixed on the outer surface of the contact rod. A second spring is fixed between one side of the conical ring and one side of the inner wall of the transmission chamber. One end of the contact rod slides through the arc-shaped receiving groove and is fixed on the arc-shaped printing strip. The other end of the contact rod slides through the countersunk groove. Multiple support rods are equally spaced at the bottom of the annular plate. The bottoms of the multiple support rods slide through the transmission chamber and are in contact with the outer surface of the conical ring.

[0015] The present invention also provides a capacitor film stretching method, applied to a capacitor film stretching device, the capacitor film stretching method comprising the following steps:

[0016] Step S1: The capacitor film body is conveyed by the conveying roller. When the temperature is too high, the sensing adjustment component will be triggered to work, so that the coating component will be opened to coat the capacitor film body to cool it down. At the same time, the capacitor film body will be printed. After coating, the feedback component will be triggered to close the coating component. Then, external airflow will be introduced to blow the capacitor film body to accelerate the cooling.

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

[0018] Step S3: When the temperature of the capacitor film body is high, the coating roller will heat up when it passes through the coating roller. The arc-shaped bimetallic strip will undergo elastic deformation when the temperature rises, pushing the reciprocating strip to one side so that the through hole and the overflow hole are opposite each other. At this time, the cooling oil inside the side 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 of the overflow hole, the feedback component will be triggered to work, causing the rectangular plate to slide to one side inside the inner cavity, thereby causing the strip to slide to the other side of the overflow hole and sliding the side hole to the opposite position of the overflow hole. At this time, the rectangular plate can close one side of the overflow hole, and the externally supplied airflow can be sprayed out 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. In the process of conveying the capacitor film body, when the temperature is too high, the sensing adjustment component will be triggered to work. Under the trigger of the sensing adjustment component, the coating component will be opened to coat the capacitor film body to cool it down. At the same time, the edge of the capacitor film body will be printed to facilitate subsequent identification. After coating, the feedback component will be triggered to close the coating component, and then external airflow will be introduced to blow the capacitor film body to accelerate cooling.

[0022] 2. In this invention, when the coating assembly is working, the cooling oil is guided into the material chamber. When the coating roller rotates, since one end of the side flow channel is connected to the material inlet chamber, the oil can enter the interior of the side flow channel and then flow from the overflow hole to the outer surface of the coating roller.

[0023] 3. In this invention, when the sensing adjustment component is working, when the temperature of the capacitor film body is high, the arc-shaped bimetallic strip will undergo elastic deformation when the temperature rises, thereby pushing the reciprocating strip to one side, so that the through hole on the reciprocating strip is opposite to the overflow hole, so that the cooling oil inside the side 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 this invention, when the feedback component is working, the rectangular plate slides to one side inside the inner cavity, thereby causing the strip-shaped opening to slide to the other side of the overflow hole, and the side hole to slide to the opposite position of the overflow hole. At this time, the rectangular plate can close one side of the overflow hole, and the externally supplied airflow can be sprayed out to the outside of the coating roller from the other side of the overflow hole through the side hole. Attached Figure Description

[0025] Figure 1 This invention provides a three-dimensional structural diagram of one side of a capacitor film stretching device;

[0026] Figure 2 This invention provides a three-dimensional structural diagram of the other side of a capacitor film stretching device.

[0027] Figure 3 This invention provides a side-section perspective view of the three-dimensional structure of a capacitor film stretching device.

[0028] Figure 4 This invention provides a three-dimensional cross-sectional view of another side of a capacitor film stretching device.

[0029] Figure 5 This invention provides a front-view three-dimensional structural diagram of the coating roller in a capacitor film stretching device;

[0030] Figure 6 This invention provides a cross-sectional three-dimensional structural diagram of a coating roller in a capacitor film stretching device.

[0031] Figure 7 This invention provides an assembly disassembly sectional view of the reciprocating bar and rectangular plate in a capacitor film stretching device;

[0032] Figure 8 For the present invention Figure 4 A magnified view of a portion of point A in the middle;

[0033] Figure 9 For the present invention Figure 5 A magnified view of a portion of point B in the middle;

[0034] Figure 10 For the present invention Figure 6 A magnified view of a portion of point C in the middle;

[0035] Figure 11 For the present invention Figure 6 A magnified view of a portion of point D.

[0036] In the diagram: 1. Conveyor box; 2. Top cover; 3. Pad; 4. Adjusting frame; 5. Screw; 6. Turntable; 7. Conveyor roller; 8. Power supply wire; 9. Electric heating plate; 10. Capacitor film body; 11. Coating roller; 12. Support roller; 13. Ring gear; 14. Oil chamber; 15. Branch pipe; 16. Connecting pipe; 17. Arc-shaped storage groove; 18. Arc-shaped printing strip; 19. Adjusting groove; 20. Slider; 21. Guide hole; 22. Buffer chamber; 23. Filter hole; 24. Feed chamber; 25. Connection port; 26. Side flow channel; 27. Air inlet channel; 28. Rectangular cavity; 29. ​​Hollow tube 30. Overflow hole; 31. Mounting groove; 32. Arc-shaped bimetallic strip; 33. Cylindrical cavity; 34. Guide plate; 35. First spring; 36. Reciprocating channel; 37. Reciprocating bar; 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. Countersunk groove; 57. Countersunk block. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see 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 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. An adjustment groove 19 is provided on both inner walls of the conveying box 1. A slider 20 is slidably arranged between the inner walls of the two adjustment grooves 19. A coating roller 11 is rotatably arranged between the opposite sides of the two sliders 20. A coating component is provided between one end of the coating roller 11 and one of the sliders 20.

[0039] Multiple sensing adjustment components are provided inside the coating roller 11. A feedback component is provided between the other end of the coating roller 11 and another slider 20. A support roller 12 is rotatably arranged between the inner walls of both sides of the conveyor 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. A pad 3 is fixed on the top of the conveyor box 1. A screw 5 is rotatably arranged on the top of the pad 3. A turntable 6 is fixed on the top of the screw 5. An adjustment frame 4 is provided above the pad 3 and threadedly connected to the screw 5. The bottom ends of both ends of the adjustment frame 4 slide through into the interior of the adjustment groove 19 and are fixed to the top of the slider 20. Electric heating plates 9 are provided inside the inner walls of both sides of the conveyor box 1. Multiple power supply wires 8 connected to the electric heating plates 9 are provided on one side of the conveyor box 1. Ring gears 13 are fixed on the outer surfaces of the coating roller 11 and the support roller 12. The two ring gears 13 mesh with each other.

[0040] The effect achieved is as follows: the capacitor film body 10 is placed inside the conveyor box 1, and the capacitor film body 10 is conveyed by the conveyor roller 7. The turntable 6 is rotated to drive the screw 5 to rotate, thereby moving the adjusting frame 4 and changing the position of the slider 20 inside the adjusting groove 19, thus changing the distance between the support roller 12 and the coating roller 11. This facilitates the pressing of capacitor film bodies 10 of different thicknesses. During the conveying process, the inside of the conveyor box 1 is heated by the electric heating plate 9, thereby heating the capacitor film body 10 during the conveying process. The support roller 12 and the coating roller 11 are set in the middle of the conveyor box 1 to facilitate the detection of whether the temperature of the capacitor film body 10 is too high. 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 down the capacitor film body 10. At the same time, the edges of the capacitor film body 10 are coated. The area is printed to facilitate subsequent identification. After coating, the feedback component is triggered to close the coating component. Then, external airflow is introduced to blow and accelerate the cooling of the capacitor film body 10. In the initial state, the slider 20 is located on the inner top surface of the adjustment groove 19. At this time, the outer surface of the slider 20 is in contact with the connection between the guide hole 21 and the adjustment groove 19, thereby closing the guide hole 21. In the working state, as the slider 20 slides down the adjustment groove 19, one end of the guide hole 21 corresponds to the filter hole 23. At this time, the oil inside the guide hole 21 can enter the buffer chamber 22 through the filter hole 23. Ring gears 13 are fixed on the outer surfaces of the support roller 12 and the coating roller 11, and the two ring gears 13 mesh with each other. The two ring gears 13 have the same number of teeth, thereby ensuring that the support roller 12 and the coating roller 11 rotate synchronously.

[0041] like Figure 4 , Figure 5 , Figure 6 and Figure 8As shown, the coating assembly includes a feeding chamber 24, which is located inside one of the sliders 20. One end of the coating roller 11 extends into the feeding chamber 24. A buffer chamber 22 is provided inside one of the sliders 20. A connection port 25 penetrating into the feeding chamber 24 is provided on one side of the inner wall of the buffer chamber 22. Multiple filter holes 23 penetrating into the outer surface of the slider 20 are provided at equal intervals on the other side of the inner wall of the buffer chamber 22. Multiple side channels 26 are provided at equal intervals along the circumferential direction inside the coating roller 11. One end of each side channel 26 penetrates into one end of the coating roller 11 and is connected to the feeding chamber 24. Multiple overflow holes 30 are provided on the outer surface of the coating roller 11 and are connected to the side channels 26. An oil cavity 14 is provided inside the side wall of the conveying box 1. A branch pipe 15 penetrating into the oil cavity 14 is fixed on one side of the conveying box 1. A guide hole 21 penetrating into the regulating groove 19 is provided on the bottom surface of the oil cavity 14.

[0042] The effect achieved is that the cooling oil is injected into the oil chamber 14 through the branch pipe 15. The oil flows from the guide hole 21 at the bottom of the oil chamber 14 to the side of the slider 20. Under the filtration of the filter hole 23, the oil flows into the buffer chamber 22 and then into the material chamber 24 through the connection port 25. When the coating roller 11 rotates, since one end of the side flow channel 26 is connected to the material chamber 24, the oil can enter the interior of the side flow channel 26 and then flow from the overflow hole 30 to the outer surface of the coating roller 11. The oil is controlled by the sensing adjustment component and the feedback component when it flows out from the overflow hole 30.

[0043] like Figure 6 , Figure 7 and Figure 10 As shown, the sensing adjustment assembly includes a reciprocating bar 37. A countersunk groove 56 is formed inside the coating roller 11 near its other edge. A countersunk block 57 is disposed inside the countersunk groove 56. Multiple reciprocating channels 36 are formed inside the coating roller 11. The reciprocating bar 37 is slidably connected between the inner walls of the reciprocating channels 36. An overflow hole 30 penetrates the reciprocating channels 36. Multiple through holes 40 are equidistantly formed on one side of the reciprocating bar 37. Multiple cylindrical cavities 33 are formed inside the coating roller 11 near one end. A mounting groove 31 is formed on one side of each cylindrical cavity 33, and the other side of each cylindrical cavity 33 is connected to the reciprocating channel. One end of each of the channels 36 is connected to the other. One end of the reciprocating bar 37 is located inside the cylindrical cavity 33 and extends into the mounting groove 31. A guide plate 34 is slidably disposed between the inner walls of the cylindrical cavity 33. The guide plate 34 is fixed on the outer surface of the reciprocating bar 37. A first spring 35 is fixed between one side of the guide plate 34 and one side of the inner wall of the cylindrical cavity 33. An arc-shaped bimetallic strip 32 is fixed on one side of the inner wall of the mounting groove 31. One end of the arc-shaped bimetallic strip 32 is in contact with one end of the reciprocating bar 37. The other ends of the multiple reciprocating bars 37 slide through the inside of the countersunk groove 56 and are all fixed on the outer surface of the countersunk block 57.

[0044] The effect is that when the temperature of the capacitor film body 10 is high, the coating roller 11 will be heated when it passes through the coating roller 11. At this time, the arc-shaped bimetallic strip 32 in the mounting groove 31 inside the coating roller 11 will undergo elastic deformation when the temperature rises, thereby pushing the reciprocating strip 37 to one side, so that the through hole 40 on the reciprocating strip 37 is opposite to the overflow hole 30, so that the cooling oil inside the side 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 block 57 to slide to the bottom of the countersunk groove 56. During the sliding process, since the bottom of the support rod 48 has not completely slid to the outer surface of the conical ring 46, the annular plate 53 is stationary inside the annular cavity 52. ​​However, since the countersunk block 57 slides to the bottom of the countersunk 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] like 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 are equidistantly formed on one side inner wall of the inner flow channel 42, extending to the outer surface of the rectangular plate 39, and a plurality of strip-shaped openings 41 are equidistantly formed on one side outer surface of the rectangular plate 39, extending to the other side outer surface. 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 disposed inside the annular cavity 52, and the bottom of the rectangular plate 39 slides through to... The annular plate 53 is fixed to the top of the annular plate 53, and the bottom edge of the annular plate 53 is in contact with the protrusion on 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. ​​Multiple bending holes 55 are opened on the inner side of the annular plate 53, and one end of each bending hole 55 is connected to one end of the inner flow channel 42. An air cavity 49 is opened near the top edge of the countersunk block 57. Multiple air guide holes 51 that penetrate into the annular cavity 52 are opened at equal intervals on the inner wall of the air cavity 49. A hollow tube 29 is installed inside another slider 20, and one end of the hollow tube 29 is sealed. The hollow tube 29 is closed and slides through to the bottom of the air cavity 49. Multiple grid openings 50 are equidistantly spaced 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 connects to the interior of the rectangular cavity 28. An air inlet channel 27, connecting to the interior of the rectangular cavity 28, is formed inside one end of the adjusting frame 4. One end of the air inlet channel 27 extends to the outside of the adjusting frame 4. A connecting pipe 16, communicating with the air inlet channel 27, is fixed to the outside of the adjusting frame 4. Three transmission cavities 44 are equidistantly spaced inside the coating roller 11. Three arc-shaped receiving grooves 17 are formed on the outer surface of the coating roller 11. The interior of each of the three arc-shaped storage slots 17 is provided with an arc-shaped printed strip 18. The interior of the transmission cavity 44 is provided with a contact rod 45. 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 one side of the inner wall of the transmission cavity 44. One end of the contact rod 45 slides through into the interior of the arc-shaped storage slot 17 and is fixed on the arc-shaped printed strip 18. The other end of the contact rod 45 slides through into the interior of the countersunk groove 56. Multiple support rods 48 are fixed at equal intervals at the bottom of the annular plate 53. The bottoms of the multiple support rods 48 slide through into the interior of the transmission cavity 44 and are in contact with the outer surface of the conical ring 46.

[0046] The effect achieved is that as the countersunk block 57 slides towards the bottom of the countersunk groove 56, the grid opening 50 on the outer surface of the hollow tube 29 rises into the air chamber 49. At this time, the high-pressure gas connected to the outside through the connecting pipe 16 can enter the rectangular cavity 28 through the air inlet channel 27, then enter the hollow tube 29 through the rectangular cavity 28, and finally enter the annular cavity 52 through the air guide hole 51 on the air chamber 49. Since the rectangular plate 39 does not slide at this time, the side hole 43 is in contact with the inner wall of the inner cavity 38, so the airflow cannot be discharged to the outside. When the through hole 40 on the reciprocating bar 37 slides to coincide with the axis of the overflow hole 30, 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 towards the inside of the countersunk groove 56. The outer side pushes, which in turn drives the arc-shaped printing strip 18 to slide outward, so that it can print on the outer edge of the capacitor film body 10. At this time, the bottom of the support rod 48 slides completely to one side of the outer surface of the conical ring 46. Under the elastic tension of the third spring 54, it can drive the annular plate 53 to slide down to the part that fits with the bottom surface of the annular cavity 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 slides the side hole 43 to the opposite position of the overflow hole 30. At this time, the rectangular plate 39 can close one side of the overflow hole 30, and the externally supplied airflow can be sprayed out from the other side of the overflow hole 30 through the side hole 43 to the outside of the coating roller 11, accelerating the cooling of the conveyed capacitor film body 10.

[0047] For example, in one embodiment, the present invention also provides a capacitor film stretching method applied to a capacitor film stretching device as described above, comprising the following steps:

[0048] Step S1: The capacitor film body 10 is conveyed by the conveying roller 7. When the temperature is too high, the sensing adjustment component will be triggered to work, so that the coating component will be opened to coat the capacitor film body 10 to cool it down. At the same time, the capacitor film body 10 will be printed. After coating, the feedback component will be triggered to close the coating component. Then, external airflow will be introduced to blow the capacitor film body 10 to accelerate the cooling.

[0049] Step S2: The oil flows from the guide hole 21 at the bottom of the oil chamber 14 to the side of the slider 20. Under the filtration of the filter hole 23, the oil flows into the interior of the buffer chamber 22, and then flows into the interior of the material chamber 24 through the connection port 25. When the coating roller 11 rotates, the oil 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 high, the coating roller 11 will be heated when it passes through the coating roller 11. When the temperature rises, the arc-shaped bimetallic strip 32 will be elastically deformed, pushing the reciprocating strip 37 to one side, so that the through hole 40 is opposite to the overflow hole 30. At this time, the cooling oil inside the side channel 26 flows out to the outer surface of the coating roller 11 to coat and cool the capacitor film body 10.

[0051] Step S4: When the through hole 40 slides to coincide with the axis of the overflow hole 30, the feedback component will be triggered to work, causing the rectangular plate 39 to slide to one side inside the inner cavity 38, thereby causing the strip-shaped opening 41 to slide to the other side of the overflow hole 30, and the side hole 43 to slide to the opposite position of the overflow hole 30. At this time, the rectangular plate 39 can close one side of the overflow hole 30, and the externally supplied airflow can be sprayed out 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, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A capacitive film stretching apparatus characterized by comprising: The device includes a conveyor box (1), a capacitor film body (10), and multiple overflow holes (30). The top of the conveyor box (1) is provided with a top cover (2). Multiple conveying rollers (7) are rotatably arranged between the inner walls of the two sides of the conveyor box (1). The capacitor film body (10) is arranged between the multiple conveying rollers (7). Adjustment grooves (19) are opened on both sides of the inner walls of the conveyor box (1). Slider blocks (20) are slidably arranged between the inner walls of the two adjustment grooves (19). Coating rollers (11) are rotatably arranged between the opposite sides of the two sliders (20). A coating component is arranged between one end of the coating roller (11) and one of the sliders (20). The coating roller (11) is provided with multiple sensing adjustment components inside. A feedback component is provided between the other end of the coating roller (11) and another slider (20). A support roller (12) is rotatably provided between the inner walls of both sides of the conveying box (1) directly below the coating roller (11). The capacitor film body (10) is located between the outer surface of the support roller (12) and the coating roller (11). The sensing adjustment assembly includes a reciprocating bar (37), a countersunk groove (56) is provided inside the coating roller (11) near the other edge, a countersunk block (57) is provided inside the countersunk groove (56), a plurality of reciprocating channels (36) are provided inside the coating roller (11), the reciprocating bar (37) is slidably connected between the inner walls of the reciprocating channels (36), the overflow hole (30) is interconnected with the reciprocating channels (36), and a plurality of through holes (40) are provided at equal intervals on one side of the reciprocating bar (37); The coating roller (11) has multiple cylindrical cavities (33) near one end. Each of the cylindrical cavities (33) has a mounting groove (31) on one side, and the other side of each cylindrical cavity (33) is connected to one end of a reciprocating channel (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 disposed between the inner walls of the cylindrical cavities (33). A first spring (35) is fixed between one side of the guide plate (34) and one side of the inner wall of the cylindrical cavity (33), and an arc-shaped bimetallic strip (32) is fixed to one side of the inner wall of the mounting groove (31). One end of the arc-shaped bimetallic strip (32) is in contact with one end of the reciprocating strip (37), and the other ends of the multiple reciprocating strips (37) slide through the inside of the countersunk groove (56) and are all fixed on the outer surface of the countersunk block (57).

2. The capacitor film stretching device according to claim 1, characterized in that: A pad (3) is fixed on the top of the conveying box (1). A screw (5) is rotatably mounted on the top of the pad (3). A turntable (6) is fixed on the top of the screw (5). An adjustment frame (4) is threadedly connected to the screw (5) above the pad (3). The bottom ends of the adjustment frame (4) slide through into the interior of the adjustment groove (19) and are fixed on the top of the slider (20). Electric heating plates (9) are installed inside both sides of the conveying box (1). Multiple power supply wires (8) connected to the electric heating plates (9) are installed on one side of the conveying box (1). Ring gears (13) are fixed on the outer surface of the coating roller (11) and the outer surface of the support roller (12). The two ring gears (13) mesh with each other.

3. The capacitor film stretching device according to claim 1, characterized in that: The coating assembly includes a feed chamber (24) which is located inside one of the sliders (20). One end of the coating roller (11) extends into the feed chamber (24). A buffer chamber (22) is provided inside one of the sliders (20). A connection port (25) penetrating into the feed chamber (24) is provided on one side of the inner wall of the buffer chamber (22). A plurality of filter holes (23) penetrating into the outer surface of the slider (20) are provided at equal intervals on the other side of the inner wall of the buffer chamber (22). A plurality of side channels (26) are provided at equal intervals along the circumferential direction inside the coating roller (11). One end of each of the side channels (26) penetrates into one end of the coating roller (11) and is connected to the feed chamber (24). A plurality of overflow holes (30) are provided on the outer surface of the coating roller (11) and are connected to the side channels (26).

4. The capacitor film stretching device according to claim 3, characterized in that: The side wall of the conveying box (1) is provided with an oil cavity (14), and a branch pipe (15) is fixed on one side of the conveying box (1) and extends into the oil cavity (14). The bottom surface of the oil cavity (14) is provided with a guide hole (21) that extends into the regulating groove (19).

5. The capacitor film stretching device according to claim 2, characterized in that: The feedback component includes a rectangular plate (39), and the reciprocating bar (37) has an inner cavity (38) inside. The rectangular plate (39) is slidably connected between the inner walls of the inner cavity (38). The rectangular plate (39) has an inner flow channel (42) inside. A plurality of side holes (43) penetrating to the outer surface of the rectangular plate (39) are equidistantly opened on one side inner wall of the inner flow channel (42). A plurality of strip-shaped openings (41) penetrating to the other side outer surface are equidistantly opened on one side outer surface of the rectangular plate (39).

6. The capacitor film stretching device according to claim 5, characterized in that: An annular cavity (52) is provided 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 provided inside the annular cavity (52). The bottom of the rectangular plate (39) slides through 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 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 provided on the inner side of the annular plate (53). One end of each of the plurality of bending holes (55) is connected to one end of the inner flow channel (42).

7. The capacitor film stretching device according to claim 6, characterized in that: The countersunk block (57) has an air chamber (49) near its top edge. Multiple air guide holes (51) extending into the annular cavity (52) are equidistantly arranged on the inner wall of the air chamber (49). A hollow tube (29) is installed inside another slider (20). One end of the hollow tube (29) is closed and slides through the bottom surface of the air chamber (49). Multiple grid openings (50) are equidistantly arranged on the outer surface of the hollow tube (29) near its closed end. A rectangular cavity (28) is formed inside another slider (20). The other end of the hollow tube (29) connects to the interior of the rectangular cavity (28). An air intake channel (27) connecting to the interior of the rectangular cavity (28) is formed inside one end of the adjusting frame (4). One end of the air intake channel (27) extends to the outside of the adjusting frame (4). A connecting pipe (16) communicating with the air intake channel (27) is fixed to the outside of the adjusting frame (4). The coating roller (11) has three equally spaced transmission chambers (44) inside. The outer surface of the coating roller (11) has three arc-shaped receiving grooves (17). Each of the three arc-shaped receiving grooves (17) contains an arc-shaped printing strip (18). The transmission chambers (44) contain contact rods (45). A conical ring (46) is fixed to the outer surface of the contact rod (45). One side of the conical ring (46) is fixed to the inner wall of one side of the transmission chamber (44). A second spring (47) is fixed. One end of the contact rod (45) slides through the arc-shaped receiving groove (17) and is fixed on the arc-shaped printed strip (18). The other end of the contact rod (45) slides through the countersunk groove (56). Multiple support rods (48) are fixed at equal intervals at the bottom of the annular plate (53). The bottoms of the multiple support rods (48) slide through the transmission cavity (44) and are in contact with the outer surface of the conical ring (46).

8. A capacitor film stretching method, applied to a capacitor film stretching apparatus as described in any one of claims 1-7, characterized in that, Includes the following steps: Step S1: The capacitor film body (10) is conveyed by the conveying roller (7). When the temperature is too high, the sensing adjustment component will be triggered to work, so that the coating component will be opened to coat the capacitor film body (10) to cool it down. At the same time, the capacitor film body (10) will be printed. After coating, the feedback component will be triggered to close the coating component. Then, external airflow will be introduced to blow the capacitor film body (10) to accelerate the cooling down. Step S2: The oil flows from the guide hole (21) at the bottom of the oil chamber (14) to the side of the slider (20). Under the filtration of the filter hole (23), the oil flows into the interior of the buffer chamber (22), and then flows into the interior of the material chamber (24) through the connection port (25). When the coating roller (11) rotates, the oil 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). Step S3: When the temperature of the capacitor film body (10) is high, the coating roller (11) will be heated when it passes through the coating roller (11). The arc-shaped bimetallic strip (32) will be elastically deformed when the temperature rises, pushing the reciprocating strip (37) to one side, so that the through hole (40) is opposite to the overflow hole (30). At this time, the cooling oil inside the side channel (26) flows out to the outer surface of the coating roller (11) to coat and cool the capacitor film body (10). Step S4: When the through hole (40) slides to coincide with the axis of the overflow hole (30), the feedback component will be triggered to work, causing the rectangular plate (39) to slide to one side inside the inner cavity (38), thereby causing the strip hole (41) to slide to the other side of the overflow hole (30) and the side hole (43) to slide to the opposite position of the overflow hole (30). At this time, the rectangular plate (39) can close one side of the overflow hole (30), and the externally supplied airflow can be sprayed out 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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