A high-temperature-resistant, high-humidity-resistant, long-service-life capacitor and a pin lead flattening device thereof

Abstract

The application discloses a high-temperature and high-humidity resistant long-service-life capacitor and a pin lead flattening device thereof, and relates to the technical field of capacitor processing. The application discloses a high-temperature and high-humidity resistant long-service-life capacitor and a pin lead flattening device thereof, and relates to the technical field of capacitor processing. The shaft center positioning assembly comprises a positioning seat body and a circular wheel part, the positioning seat body is used for placing a capacitor main body, the circular wheel part is composed of a hollow section and a solid section in a symmetrical design, and a magnetic adsorption material is arranged on the solid section, so that the centering and the circumferential limiting of the capacitor lead-out end are realized, and the contradiction that the traditional positioning structure cannot consider the feeding convenience and the positioning stability at the same time is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of capacitor processing technology, specifically to a high-temperature, high-humidity, long-life capacitor and its lead flattening device. Background Technology

[0002] Currently, in the field of capacitor processing and manufacturing technology, high-temperature and high-humidity resistant long-life capacitors are widely used in industrial control, new energy equipment, outdoor electronic equipment, and circuit systems under harsh conditions due to their excellent environmental tolerance and long-term stability. In the mass production process of these capacitors, the lead flattening process is a key step to ensure the reliability of subsequent welding and assembly and improve the overall performance of the product. The flattening quality directly determines the contact area between the capacitor leads and the circuit board, the welding strength, and the assembly accuracy. However, current equipment for multi-station synchronous capacitor lead flattening still has significant technical shortcomings, making it difficult to achieve efficient, high-precision, and highly consistent flattening processes, and thus failing to meet the needs of mass production of high-temperature and high-humidity resistant long-life capacitors.

[0003] Current processing equipment and molding processes used for flattening capacitor leads have significant technical defects in actual production applications, failing to achieve precise lead positioning and stable flattening. Specific pain points are as follows:

[0004] 1. To facilitate quick loading and improve processing efficiency, existing positioning structures are mostly designed as open, unprecise placement forms. While this allows for rapid placement of the capacitor body, it lacks effective fixation and restraint. During the flattening process, the capacitor body is easily subjected to squeezing and impact, causing it to bounce, shift, or even flip. If a closed, strongly restrained positioning structure is used to ensure stable placement, it can prevent the capacitor from shifting during flattening, but it makes the capacitor loading and unloading operations cumbersome, significantly reducing loading efficiency and failing to meet the high-efficiency production requirements of multi-station synchronous processing. The contradiction between these two approaches directly affects the processing efficiency and forming accuracy of flattening the leads of high-temperature, high-humidity, long-life capacitors, making it difficult to meet the actual needs of large-scale production.

[0005] 2. Traditional flattening devices often directly extrude and form capacitor leads without setting up positioning components to synchronously limit the placement of the capacitor body and the radial and circumferential directions of the leads. During the conveying and flattening process, the capacitor is prone to positional shift and rotation, resulting in deviations in the flattening position of the leads and uneven forming thickness. This makes it impossible to guarantee the consistency of multi-station synchronous processing, which seriously affects the subsequent welding and assembly effect.

[0006] 3. Existing equipment mostly adopts a fixed processing structure, lacking a moving drive structure that can smoothly transport capacitors from the waiting area to the processing area. The capacitor loading and unloading actions are prone to interference with the flattening process. At the same time, the leads cannot be effectively straightened before entering the flattening station, which easily leads to lead bending and misalignment, directly causing flattening failure and increasing product scrap rate.

[0007] Therefore, in view of this, the present invention proposes a high-temperature and high-humidity resistant long-life capacitor and its lead flattening device to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a high-temperature, high-humidity, long-life capacitor and its lead flattening device, thereby resolving the technical issues raised in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high temperature and high humidity resistant long life capacitor, comprising a capacitor body, the capacitor body comprising a metallized polypropylene film core, gold-plated electrodes disposed on the end face of the core, and a high humidity resistant flame-retardant epoxy encapsulation layer covering the outside of the core and the gold-plated electrodes, and a lead-out terminal assembled at the bottom of the capacitor body, the lead-out terminal being made of metal and used to realize electrical connection with an external circuit.

[0010] A device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor includes a processing platform. A connecting bracket is fixedly connected to the upper surface of the processing platform. A drive module is mounted on the processing platform. A multi-station processing mechanism is arranged above the processing platform. The multi-station processing mechanism includes a shaft positioning component and a flattening auxiliary component. The shaft positioning component includes a positioning seat and a wheel. The positioning seat is used to place the capacitor body and can move from the area to be processed to the processing area under the drive of the drive module. The wheel is arranged corresponding to the lead end and is used to achieve radial centering and circumferential limiting of the lead end. The flattening auxiliary component includes nut pressing plates arranged opposite each other. During processing, the nut pressing plates move towards each other synchronously along the horizontal axis to radially press and flatten the lead end after it has been limited by the shaft positioning component.

[0011] Furthermore, the drive module includes a slide rail fixedly connected to the upper surface of the processing platform. Each slide rail has a slide block slidably connected to its outer wall. The slide block is fixedly connected to the positioning seat body, and each slide block has a cylinder workpiece mounted on its side wall. The output end of the cylinder workpiece is connected to the slide block for driving the slide block to slide back and forth along the slide rail.

[0012] Furthermore, the surface of the positioning base is uniformly provided with a plurality of through holes, the radius of which is larger than the radius of the lead-out end, and the lead-out end can pass through the through holes and extend into the bottom of the positioning base.

[0013] Furthermore, the axial positioning assembly also includes an extension cylinder, the radius of which is equal to the radius of the through hole, and the extension cylinder and the through hole are coaxially distributed. The extension cylinder is sleeved on the outside of the lead-out end, so that an assembly gap is formed between the inner wall of the extension cylinder and the outer wall of the lead-out end.

[0014] Furthermore, the outer wall of the extension cylinder is provided with a through groove, and the wheel component is rotatably connected to the extension cylinder through the through groove. The wheel component is distributed in a spiral shape along the vertical direction of the extension cylinder, and the outer wall of the wheel component is in close contact with the outer circumferential surface of the lead-out end.

[0015] Furthermore, the circular wheel component includes a hollow section and a solid section, both of which are semi-annular structures, and the solid section is made of a magnetically adsorbent material.

[0016] Furthermore, the flattening auxiliary component also includes a motor workpiece mounted on the upper surface of the processing platform. A transmission component is mounted on the outer wall of the output end of the motor workpiece. A connecting roller is mounted on the outer wall of the transmission component. The outer wall of the connecting roller has a forward thread groove and a reverse thread groove. The forward thread groove and the reverse thread groove are staggered, and every two adjacent forward thread grooves and reverse thread grooves form a group. Nut pressing plates are threadedly connected to the outer walls of the forward thread groove and the reverse thread groove respectively. The connecting roller and the nut pressing plate form a ball screw structure through the forward thread groove and the reverse thread groove.

[0017] Furthermore, a partition plate is fixedly connected to the outer wall of the connecting roller, and the partition plate is distributed at the center position between the forward thread groove and the reverse thread groove.

[0018] Furthermore, a limiting round shaft is mounted on the outside of the connecting round roller. The limiting round shaft passes through several nut pressing plates laterally. The nut pressing plates and the limiting round shaft are slidably connected, and an anti-jump pad is fixedly connected to the outer wall of the limiting round shaft.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) This device achieves centering and circumferential positioning of the capacitor lead-out end through the integrated structure of the positioning seat, extension cylinder and wheel in the axial positioning assembly. In particular, the symmetrical design of the wheel, which consists of hollow and solid sections, and the magnetic adsorption material of the solid section, effectively solves the contradiction between the convenience of feeding and the stability of positioning in traditional positioning structures. The cooperation between the positioning seat and the extension cylinder provides initial guidance for the lead-out end. The hollow section of the wheel reduces the resistance when the lead-out end is inserted due to its small contact area, making it easy for operators to feed the material quickly. The solid section achieves stable positioning of lead-out ends of different materials through magnetic adsorption or large-area friction constraint, ensuring that the lead-out end is always in the center position, avoiding radial offset and circumferential rotation during the subsequent flattening process, and greatly improving the positional accuracy and forming consistency of the flattened pin.

[0021] Most importantly, the spirally distributed wheel components can form a uniform fit with the outer circumference of the lead-out end, ensuring balanced radial force and avoiding pin deformation caused by excessive local force. At the same time, the spirally distributed structure can adapt to the length direction of the lead-out end, and no matter what height position the lead-out end is at, there can be corresponding wheel components to provide support and limit, effectively preventing the lead-out end from shifting or rotating during processing.

[0022] Furthermore, the pre-reserved assembly gap between the inner wall of the extension tube and the outer wall of the lead-out end is a key design feature that balances ease of installation and positioning stability. This assembly gap is larger than the size of the lead-out end. On the one hand, it provides ample space for installation and disassembly before and after the lead-out end is flattened, allowing operators to quickly insert the lead-out end into the extension tube and easily remove the processed capacitor. This effectively avoids installation jamming or disassembly difficulties caused by the slight increase in the size of the lead-out end after flattening, significantly improving operational efficiency. On the other hand, this gap can buffer the slight deformation during the flattening process of the lead-out end, preventing friction and collision between the lead-out end and the inner wall of the extension tube, preventing scratches or deformation on the surface of the lead-out end, and ensuring that the lead-out end is always in the center position of the extension tube, ensuring positioning stability and avoiding centering deviation caused by contact friction.

[0023] (2) This device achieves synchronous opposite movement of the nut extrusion plate through the linkage structure of the motor workpiece, transmission component, connecting roller and nut extrusion plate in the flattening auxiliary component, especially the staggered arrangement of the positive and negative thread grooves on the connecting roller, and the ball screw structure formed by the two and the nut extrusion plate. This effectively solves the problems of asynchronous extrusion and uneven force in traditional flattening mechanisms. Among them, the limiting round shaft effectively restricts the rotational freedom of the nut extrusion plate, so that the extrusion force can be applied to the lead end, achieving uniform plastic deformation of the lead end. At the same time, the partition plate can prevent the nut extrusion plate from colliding due to overtravel, further ensuring the stability of the flattening process, improving the flattening forming quality, and meeting the processing requirements of capacitors of different specifications.

[0024] (3) In actual use, the elastic pressing structure of the anti-jump pad, the adjustable thickness design of the separator plate, and the adaptability design for the two mainstream lead-out materials have achieved multiple improvements in processing quality, processing flexibility, and equipment compatibility, effectively solving the problems of poor processing adaptability, uncontrollable flattening thickness, and easy jumping of capacitors in traditional devices; the anti-jump pad forms a stable constraint on the capacitor body by offsetting the squeezing impact component, preventing it from jumping and shifting, and further ensuring the flattening accuracy; the adjustable thickness design of the separator plate can control the flattening thickness of the lead-out, adapting to the needs of capacitors of different specifications; the structural design of the round wheel component makes the device compatible with the processing of lead-out materials of CP wire and pure copper wire, expanding the applicability of the equipment. At the same time, the entire device structure is coordinated and operates without interference, which not only ensures processing efficiency but also extends the service life of the equipment and reduces the product scrap rate in the production process, providing a reliable guarantee for the large-scale and high-precision processing of high-temperature, high-humidity, and long-life capacitors. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the initial state of the capacitor body of the present invention from an axial perspective.

[0026] Figure 2 This is a schematic diagram of the frontal planar structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the axial view of the three-dimensional structure of the present invention;

[0028] Figure 4 This is a top exploded view of the capacitor body and chuck of the present invention;

[0029] Figure 5 This is an exploded view of the capacitor body and chuck of the present invention from a bottom angle;

[0030] Figure 6 This is a front view of the capacitor body of the present invention after installation.

[0031] Figure 7 This is a top view of the completed capacitor body of the present invention.

[0032] Figure 8 For the present invention Figure 7 Enlarged planar view of point A in the middle;

[0033] Figure 9 This is a top view schematic diagram of the positional relationship between the lead-out end and the extension tube of the present invention;

[0034] Figure 10 This is an axial three-dimensional structural diagram showing the positional relationship between the lead-out end and the extension tube of the present invention;

[0035] Figure 11This is a three-dimensional structural diagram of the circular wheel component of the present invention.

[0036] Figure 12 This is a three-dimensional structural diagram of the relevant components of the flattening auxiliary component of the present invention;

[0037] Figure 13 This is a three-dimensional structural diagram illustrating the positional relationship between the forward and reverse thread grooves of the present invention.

[0038] Figure 14 This is a schematic diagram of the planar structure showing the positional relationship between the limiting circular shaft and the anti-jump pad of the present invention;

[0039] Figure 15 This is a schematic diagram of the axial three-dimensional structure of the capacitor body of the present invention in a flattened state.

[0040] The numbers on the map are:

[0041] 1. Machining platform; 11. Connecting bracket; 12. Capacitor body; 13. Lead-out terminals;

[0042] 2. Drive module; 21. Slide rail; 22. Slide block; 23. Cylinder workpiece;

[0043] 3. Multi-station machining mechanism;

[0044] 31. Shaft positioning assembly; 311. Positioning seat; 312. Through hole; 313. Extension cylinder; 314. Assembly interval; 315. Gear component; 3151. Hollow section; 3152. Solid section;

[0045] 32. Flattening auxiliary component; 321. Motor workpiece; 322. Transmission component; 323. Connecting roller; 324. Forward thread groove; 325. Reverse thread groove; 326. Separator plate; 327. Nut pressing plate; 328. Limiting round shaft; 329. Anti-jump pressure pad. Detailed Implementation

[0046] 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.

[0047] Example 1:

[0048] Please refer to Figure 1As shown, a high-temperature and high-humidity resistant long-life capacitor includes a capacitor body 12. The capacitor body 12 includes a metallized polypropylene film core, gold-plated electrodes disposed on the end face of the core, and a high-humidity resistant and flame-retardant epoxy encapsulation layer covering the outside of the core and the gold-plated electrodes. A lead-out terminal 13 is assembled at the bottom of the capacitor body 12. The lead-out terminal 13 is made of metal and is used to realize electrical connection with external circuit.

[0049] It should be added that the high-temperature and high-humidity polypropylene powder-coated film capacitor provided in this embodiment is formed by winding a metallized polypropylene dielectric film, and encapsulated with gold-plated electrodes and high-humidity flame-retardant epoxy material. It has non-polarity and self-healing properties, and is suitable for high-frequency resonance and pulse circuit applications in high-temperature and high-humidity scenarios such as smart meters, photovoltaic inverters, outdoor LED driver power supplies, and electronic ballasts.

[0050] The core advantage of this capacitor lies in its excellent high temperature and high humidity stability. When working in high temperature and high humidity environments for a long time, it has small capacitance drift and long life. It also has good temperature characteristics, frequency characteristics, voltage characteristics and moisture resistance, high reliability and no piezoelectric effect or nonlinear distortion.

[0051] In terms of materials, the inner coating material forms a three-dimensional network structure with high cross-linking density through anhydride curing, which significantly hinders the penetration of water molecules. At the same time, it has low moisture absorption properties, which prevents the coating from expanding, plasticizing or deteriorating at the interface under high temperature and high humidity conditions. In terms of formulation design, a complete shielding layer is formed by reasonable component matching, which extends the diffusion path of water vapor molecules. In terms of structural design, a high-density anti-oxidation layer is added between the alloy layer of the gold-plated layer and the end face of the core, which effectively prevents water molecules from penetrating into the film through the capacitor pins, ensuring that the capacitor can work for a long time without failure under high temperature and high humidity conditions, and greatly improving its service life.

[0052] Please refer to Figure 2 - Figure 11 As shown, the high-temperature, high-humidity, long-life capacitor lead flattening device includes a processing platform 1. A connecting bracket 11 is fixedly connected to the upper surface of the processing platform 1. A drive module 2 is mounted on the processing platform 1. A multi-station processing mechanism 3 is set above the processing platform 1. The multi-station processing mechanism 3 includes a shaft positioning component 31 and a flattening auxiliary component 32. The shaft positioning component 31 includes a positioning seat 311 and a wheel component 315. The positioning seat 311 is used to place the capacitor body 12, and the positioning seat 311 can be moved from the processing area to the processing area under the drive of the drive module 2. The wheel component 315 is set corresponding to the lead end 13 and is used to achieve radial centering and circumferential limiting of the lead end 13. The flattening auxiliary component 32 includes a nut pressing plate 327 arranged opposite to each other. During the processing, the nut pressing plate 327 moves towards each other synchronously along the horizontal axis to radially press and flatten the lead end 13 after it has been limited by the shaft positioning component 31.

[0053] It should be noted that the drive module 2 includes a slide rail 21 fixedly connected to the upper surface of the processing platform 1. The outer wall of the slide rail 21 is slidably connected to a slide seat 22. The slide seat 22 is fixedly connected to the positioning seat 311. The side wall of the slide seat 22 is equipped with a cylinder workpiece 23. The output end of the cylinder workpiece 23 is connected to the slide seat 22 for driving the slide seat 22 to slide back and forth along the slide rail 21.

[0054] Please refer to Figure 4 as well as Figure 8 - Figure 11 As shown, the surface of the positioning base 311 is uniformly provided with a plurality of through holes 312. The radius of the through holes 312 is larger than the radius of the lead-out end 13. The lead-out end 13 can pass through the through holes 312 and extend into the lower part of the positioning base 311. The axial positioning assembly 31 also includes an extension cylinder 313. The radius of the extension cylinder 313 is equal to the radius of the through holes 312, and the extension cylinder 313 is coaxially distributed with the through holes 312. The extension cylinder 313 is sleeved on the outside of the lead-out end 13, so that the inner wall of the extension cylinder 313 is flush with the lead-out end 13. An assembly gap 314 is formed between the outer walls of the end 13. A through groove is provided on the outer wall of the extension cylinder 313. The circular wheel 315 is rotatably connected to the extension cylinder 313 through the through groove. The circular wheel 315 is distributed in a spiral shape along the vertical direction of the extension cylinder 313. The outer wall of the circular wheel 315 is in close contact with the outer circumferential surface of the lead-out end 13. The circular wheel 315 includes a hollow section 3151 and a solid section 3152. Both the hollow section 3151 and the solid section 3152 are semi-annular structures, and the solid section 3152 is made of magnetic adsorption material.

[0055] Please refer to Figure 3 as well as Figure 12 - Figure 15 As shown, the flattening auxiliary component 32 also includes a motor workpiece 321 mounted on the upper surface of the processing platform 1. A transmission component 322 is mounted on the outer wall of the output end of the motor workpiece 321. A connecting roller 323 is mounted on the outer wall of the transmission component 322. The outer wall of the connecting roller 323 is provided with a forward threaded groove 324 and a reverse threaded groove 325. The forward threaded groove 324 and the reverse threaded groove 325 are staggered, and every two adjacent forward threaded grooves 324 and reverse threaded grooves 325 form a group. Nut pressing plates 327 are threadedly connected to the outer walls of the forward threaded grooves 324 and the reverse threaded grooves 325 respectively. The connecting roller 323 and the nut pressing plate 327 form a ball screw structure through the forward threaded grooves 324 and the reverse threaded grooves 325.

[0056] It should be noted that a partition plate 326 is fixedly connected to the outer wall of the connecting roller 323. The partition plate 326 is distributed at the center position between the forward thread groove 324 and the reverse thread groove 325. A limiting round shaft 328 is assembled on the outside of the connecting roller 323. Several nut pressing plates 327 are transversely inserted through the limiting round shaft 328. The nut pressing plates 327 and the limiting round shaft 328 are slidably connected. An anti-jump pressure pad 329 is fixedly connected to the outer wall of the limiting round shaft 328.

[0057] It should be noted that the transmission component 322 includes three transmission wheels and a synchronous belt; the middle transmission wheel is fixedly connected to the outer wall of the output shaft of the motor workpiece 321, and the other two transmission wheels are coaxially fixedly connected to the connecting rollers 323 on both sides respectively. The three transmission wheels are synchronously transmitted through the synchronous belt. During operation, the motor workpiece 321 drives the middle transmission wheel to rotate, which drives the transmission wheels on both sides to rotate synchronously through the synchronous belt, thereby driving the two connecting rollers 323 to rotate synchronously, providing power for the opposite movement of the nut pressing plate 327.

[0058] Specifically, such as Figure 3 As shown, after the device is started, it first enters the workstation switching process. The cylinder workpiece 23 of the drive module 2 starts, and its output end extends to push the slide 22 which is fixedly connected to the positioning seat 311, so that it slides smoothly along the slide rail 21 fixed on the upper surface of the processing platform 1, thereby driving the positioning seat 311 to move from the area to be processed to the preset processing area and stop at the corresponding workstation of the flattening auxiliary component 32.

[0059] Once the positioning base 311 has come to a stop in the processing area, the operator begins the loading operation, placing the capacitor body 12 stably on the positioning base 311. Simultaneously, the operator ensures that the capacitor's lead-out end 13 accurately passes through the evenly spaced through holes 312 on the surface of the positioning base 311 and naturally extends into the extension cylinder 313 below the positioning base 311. Since the radius of the through holes 312 is larger than the radius of the lead-out end 13, this ensures that the lead-out end 13 can pass through smoothly, preventing jamming during loading, and also provides initial radial guidance for the lead-out end 13. The extension cylinder 313 is coaxially distributed with the through holes 312, and its radius is the same as the through holes 312. It is fitted around the outside of the lead-out end 13, and an assembly gap 314 is formed between the inner wall of the extension cylinder 313 and the outer wall of the lead-out end 13. This gap provides space for the subsequent movement of the wheel component 315 and further assists in guiding the lead-out end 13, preventing bending or displacement of the lead-out end 13.

[0060] When the operator places the capacitor body 12 onto the positioning base 311, they need to hold the capacitor body 12, align the lead-out end 13 at its bottom with the through hole 312 on the surface of the positioning base 311, and insert it downwards so that the lead-out end 13 passes through the through hole 312 and extends into the extension tube 313. During the insertion of the lead-out end 13, the lead-out end 13 first contacts the hollow section 3151 of the wheel component 315. Because the hollow section 3151 is a hollow structure, the contact area with the lead-out end 13 is smaller, and it is easier to drive the wheel component 315 to rotate when squeezed by the lead-out end 13. Therefore, as the lead-out end 13 continues to be inserted, the wheel component 315 rotates. Driven by the hollow section 3151, the solid section 3152 rotates slowly, thereby rotating it to a position opposite to the lead-out end 13. At this time, the solid section 3152, relying on its own magnetic adsorption properties, comes into contact with the lead-out end 13, achieving radial centering and circumferential limiting of the lead-out end 13. Throughout the process, the small contact area design of the hollow section 3151 effectively reduces the resistance when the lead-out end 13 is inserted; the magnetic adsorption effect of the solid section 3152 further enhances the tightness of the fit, ensuring that the lead-out end 13 is always in the center position of the extension cylinder 313, avoiding displacement during the subsequent flattening process, and providing a stable positioning basis for the subsequent extrusion and flattening process.

[0061] After the lead-out end 13 completes the centering and limiting, the flattening auxiliary component 32 is activated to begin radially pressing and flattening the lead-out end 13. First, the motor workpiece 321 mounted on the upper surface of the processing platform 1 starts to operate, and its output shaft drives the transmission wheel in the middle of the transmission component 322 to rotate synchronously. Since the three transmission wheels are connected by a synchronous belt, when the middle transmission wheel rotates, the power is transmitted synchronously to the transmission wheels on both sides through the synchronous belt, thereby driving the two connecting rollers 323, which are coaxially fixedly connected to the transmission wheels on both sides, to rotate synchronously. Since the outer wall of the connecting roller 323 is provided with a forward thread groove 324 and a reverse thread groove 325, the two are staggered. Every two adjacent forward thread grooves 324 and reverse thread grooves 325 form a group, and are respectively threadedly connected to the oppositely arranged nut pressing plate 327. The connecting roller 323 and the nut pressing plate 327 form a ball screw structure through the above-mentioned thread grooves, which can convert the rotational motion of the connecting roller 323 into the linear motion of the nut pressing plate 327.

[0062] Meanwhile, the partition plate 326, fixedly connected to the outer wall of the connecting roller 323, is distributed at the center position between the forward thread groove 324 and the reverse thread groove 325, which can effectively prevent the nut pressing plates 327 on both sides from overtravel collision during movement; the limiting round shaft 328 mounted on the outside of the connecting roller 323 passes through all the nut pressing plates 327 laterally and is slidably connected to the nut pressing plates 327, which can limit the degree of freedom of the nut pressing plates 327 to rotate synchronously with the connecting roller 323, ensuring that the nut pressing plates 327 can only move along the horizontal axis. Under the rotation of the connecting roller 323, the relatively set nut pressing plates 327 move along the limiting round shaft 326. The axial synchronous approach of 28 leads, when the nut pressing plate 327 contacts the lead-out end 13 which has been centered and limited, continuously applies radial pressing force, causing the lead-out end 13 to undergo plastic deformation and complete the flattening process. During this process, the anti-jump pad 329 always maintains an elastic pressing state with the upper surface of the capacitor body 12, which can offset the upward impact component generated by the radial pressing of the nut pressing plate 327 on the lead-out end 13, forming a stable constraint on the capacitor body 12 from the top, preventing it from jumping, shifting or flipping due to force vibration, thereby ensuring that the position of the lead-out end 13 relative to the pressing station remains unchanged, significantly improving the dimensional consistency and processing accuracy of the flattening process.

[0063] Since the separator plate 326 is located between the forward thread groove 324 and the reverse thread groove 325, and the flattening of the lead end 13 is achieved by the two sets of thread grooves driving the corresponding nut pressing plates 327 to move closer to each other, by changing the thickness of the separator plate 326, the minimum distance between the two nut pressing plates 327 moving towards each other can be limited, thereby controlling the final flattening thickness of the lead end 13 and meeting the processing requirements of capacitors of different specifications.

[0064] Once the lead-out end 13 is flattened to the preset requirements, the motor workpiece 321 rotates in reverse, driving the two connecting rollers 323 to rotate in the opposite direction via the transmission component 322. This, in turn, through the engagement of the forward thread groove 324 and the reverse thread groove 325, causes all the nut pressing plates 327 to move synchronously in the opposite direction along the axial direction of the limiting shaft 328, gradually disengaging from the flattened lead-out end 13 and returning to the initial position. The flattening action is then complete. At this point, the operator can remove the flattened capacitor body 12 from the positioning seat 311, completing a single processing cycle. If it is necessary to continue processing the next batch of capacitors... After flattening, the operator can directly place the new capacitor body 12 on the positioning seat 311 and repeat the above positioning and flattening process. If no further processing is needed, the cylinder workpiece 23 of the drive module 2 moves in the reverse direction, the output end retracts, and the slide 22 slides in the reverse direction along the slide rail 21, thereby moving the positioning seat 311 from the processing area to the initial processing area, completing the overall reset of the device, which is convenient for subsequent storage and next use. Throughout the process, the movement of each component is coordinated and without interference, which ensures both processing efficiency and processing quality, and is suitable for the needs of multi-station synchronous processing.

[0065] It should be added that, in the existing technology, the capacitor lead 13 can be made of two mainstream wire materials: CP wire, i.e., tinned copper-clad steel wire, and pure copper wire, i.e., tinned copper wire. Among them, CP wire, as the most commonly used lead material, adopts a composite structure with a central steel (iron) core, an outer copper layer, and a tin-plated surface. It has the characteristics of being magnetically attracted, high mechanical strength, low cost, and excellent welding performance, and is widely used in conventional capacitors such as aluminum electrolytic capacitors, CBB capacitors, X2 safety capacitors, and polyester capacitors. Pure copper wire is made of pure copper with a tin-plated surface. Although it is not magnetic and cannot be attracted by a magnet, it has better conductivity and is mostly used in scenarios with high electrical performance requirements, such as CBB81 capacitors, high-frequency resonant capacitors, audio and high-end audiophile capacitors.

[0066] For the adaptation and positioning of leads 13 made of different materials, this device can still achieve a stable and reliable limiting function: when the lead 13 is a CP wire that can be magnetically attracted, the solid segment 3152 is tightly attached to the lead 13 through magnetic attraction, and with its large contact area, it achieves strong radial centering and circumferential limiting; when the lead 13 is a pure copper wire that cannot be magnetically attracted, the solid segment 3152, with its structure of large-area contact with the outer wall of the lead 13, relies on the friction constraint between the contact surfaces and radial wrapping limiting to form a stable position limit for the lead 13, effectively preventing radial displacement and circumferential rotation during the flattening process, so that the device can be compatible with the positioning and processing requirements of leads made of two mainstream materials.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature, high-humidity, long-life capacitor, comprising a capacitor body (12), characterized in that: The capacitor body (12) includes a metallized polypropylene film core, a gold-plated electrode disposed on the end face of the core, and a high-humidity-resistant flame-retardant epoxy encapsulation layer covering the outside of the core and the gold-plated electrode. A lead-out terminal (13) is assembled below the capacitor body (12). The lead-out terminal (13) is made of metal and is used to realize electrical connection with external circuits.

2. A device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor, applied to a high-temperature, high-humidity, long-life capacitor as described in claim 1, comprising a processing platform (1), wherein a connecting bracket (11) is fixedly connected to the upper surface of the processing platform (1), and a driving module (2) is mounted on the processing platform (1), characterized in that: The processing platform (1) is provided with a multi-station processing mechanism (3) above it. The multi-station processing mechanism (3) includes a spindle positioning component (31) and a flattening auxiliary component (32). The axial positioning assembly (31) includes a positioning seat (311) and a wheel (315). The positioning seat (311) is used to place the capacitor body (12), and the positioning seat (311) can be moved from the processing area to the processing area under the drive of the drive module (2). The wheel (315) is set corresponding to the lead-out end (13) and is used to achieve radial centering and circumferential limiting of the lead-out end (13). The flattening auxiliary component (32) includes nut extrusion plates (327) arranged opposite each other. During the processing, the nut extrusion plates (327) move closer to each other synchronously along the horizontal axis to radially extrude and flatten the lead-out end (13) after it has been limited by the axial positioning component (31).

3. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 2, characterized in that: The drive module (2) includes a slide rail (21) fixedly connected to the upper surface of the processing platform (1). The outer wall of the slide rail (21) is slidably connected to a slide seat (22). The slide seat (22) is fixedly connected to the positioning seat (311). The side wall of the slide seat (22) is equipped with a cylinder workpiece (23). The output end of the cylinder workpiece (23) is connected to the slide seat (22) for driving the slide seat (22) to slide back and forth along the slide rail (21).

4. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 2, characterized in that: The surface of the positioning base (311) is uniformly provided with a plurality of through holes (312). The radius of the through holes (312) is larger than the radius of the lead-out end (13). The lead-out end (13) can pass through the through holes (312) and extend into the lower part of the positioning base (311).

5. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 2, characterized in that: The axial positioning assembly (31) also includes an extension tube (313), the radius of which is equal to the radius of the through hole (312), and the extension tube (313) and the through hole (312) are coaxially distributed. The extension tube (313) is sleeved on the outside of the lead-out end (13), so that an assembly gap (314) is formed between the inner wall of the extension tube (313) and the outer wall of the lead-out end (13).

6. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 5, characterized in that: The outer wall of the extension cylinder (313) is provided with a through groove, and the wheel (315) is rotatably connected to the extension cylinder (313) through the through groove. The wheel (315) is distributed in a spiral shape along the vertical direction of the extension cylinder (313), and the outer wall of the wheel (315) is in close contact with the outer circumference of the lead-out end (13).

7. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 2, characterized in that: The circular wheel component (315) includes a hollow section (3151) and a solid section (3152), both of which are semi-annular structures, and the solid section (3152) is made of magnetic adsorption material.

8. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 2, characterized in that: The flattening auxiliary component (32) also includes a motor workpiece (321) mounted on the upper surface of the processing platform (1). The outer wall of the output end of the motor workpiece (321) is equipped with a transmission component (322). The outer wall of the transmission component (322) is equipped with a connecting roller (323). The outer wall of the connecting roller (323) is provided with a forward thread groove (324) and a reverse thread groove (325). The forward thread groove (324) and the reverse thread groove (325) are staggered, and every two adjacent forward thread grooves (324) and reverse thread grooves (325) form a group. The outer walls of the forward thread groove (324) and the reverse thread groove (325) are respectively threaded with a nut pressing plate (327). The connecting roller (323) and the nut pressing plate (327) form a ball screw structure through the forward thread groove (324) and the reverse thread groove (325).

9. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 8, characterized in that: The outer wall of the connecting roller (323) is fixedly connected with a partition plate (326), which is distributed at the center position between the forward thread groove (324) and the reverse thread groove (325).

10. The device for flattening the lead wires of a high-temperature, high-humidity, long-life capacitor according to claim 8, characterized in that: The connecting roller (323) is equipped with a limiting round shaft (328) on its outside. The limiting round shaft (328) passes through several nut pressing plates (327) laterally. The nut pressing plates (327) and the limiting round shaft (328) are slidably connected. The outer wall of the limiting round shaft (328) is fixedly connected with an anti-jump pad (329).

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