Optocoupler packaging structure and packaging process

Abstract

The invention relates to an optocoupler packaging structure and packaging technology, and relates to the technical field of photoelectric coupler packaging, the optocoupler packaging structure comprises an equipment table, and the surface of the equipment table is provided with a positioning support assembly, a shell limiting mechanism, a temperature control curing mechanism and a material mixing injection mechanism; the positioning and supporting assembly comprises a movable base, a supporting table is fixed to the upper surface of the movable base, a rotating base plate is rotationally arranged on the surface of the supporting table, and a plurality of shell limiting grooves used for containing packaging shells are formed in the surface of the rotating base plate. In the positioning and supporting assembly, a stepping motor can drive a rotary chassis to achieve rotary feeding, a movable base can flexibly switch the position between a material mixing and injecting mechanism and a temperature control curing mechanism, cooperative actions of all the mechanisms are matched, manual intervention is reduced, continuous operation is achieved, and the production efficiency is improved. And the production efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of optocoupler packaging technology, specifically to an optocoupler packaging structure and packaging process. Background Technology

[0002] Optocouplers, as important photoelectric conversion and isolation components, are widely used in communications, power, and automation control. Their packaging quality directly affects the insulation performance, stability, and lifespan of the devices. The optocoupler packaging process mainly involves key steps such as positioning and fixing the light-emitting device and the photosensitive device, mixing and injecting the packaging material, and curing. It requires a high degree of automation, precision control, and process coordination of the equipment.

[0003] Currently, traditional optocoupler packaging processes and equipment have the following shortcomings: First, the equipment has poor versatility and insufficient adaptability. The packaging shells are diverse in specifications, but the positioning components of the current limiting mechanism (such as push rods and slots) are mostly fixed structures, making it difficult to flexibly adjust the spacing to adapt to shells of different sizes. When changing specifications, it is necessary to frequently disassemble and replace components, which increases the complexity of operation and time costs.

[0004] Secondly, the curing effect is uneven, the product stability is poor, the temperature control accuracy during the curing process is low, and there are temperature differences in the heating areas, which leads to inconsistent material curing rates. Some areas are not completely cured or over-cured, which affects the insulation performance and service life of the optocoupler. Summary of the Invention

[0005] The purpose of this invention is to provide an optocoupler packaging structure and packaging process to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an optocoupler packaging structure, including a device stage, wherein the surface of the device stage is provided with a positioning support component, a housing limiting mechanism, a temperature-controlled curing mechanism, and a material mixing and injection mechanism; The positioning support assembly includes a movable base, a support platform fixed on the upper surface of the movable base, a rotating chassis rotatably mounted on the surface of the support platform, and a plurality of housing limiting grooves for placing the encapsulation housing on the surface of the rotating chassis. The housing limiting mechanism includes a fixed frame, an extension plate is fixedly connected to the top of the fixed frame, two rectangular limiting holes are opened on the surface of the extension plate, lifting bars are slidably arranged on the inner wall of the rectangular limiting holes, positioning round shells are fixedly connected to the bottom ends of the two lifting bars, four adjusting discs are rotatably connected to the lower surface of the positioning round shells, and limiting top rods are fixedly connected to the lower surface of the adjusting discs. The material mixing and injection mechanism includes an injection tube fixedly embedded in the center of the lower surface of the positioning shell, and a support frame fixedly connected to the back of the fixing frame. The top of the support frame is fixedly connected to an mounting frame, and an epoxy resin tank and a silicone tank are fixedly mounted on the upper surface of the mounting frame. A mixing tank is fixedly mounted on the upper surface of the support frame.

[0007] Preferably, a delivery pump is fixedly mounted on the surface of the fixed frame, and a delivery hose is fixedly connected to the output end of the delivery pump. A limiting through hole is opened on the upper surface of the positioning shell, and an injection molding guide that can slide up and down is arranged inside the limiting through hole. The bottom end of the injection molding guide is fixedly connected to the input end of the injection pipe, and the end of the delivery hose away from the delivery pump is fixedly connected to the input end of the injection molding guide. An installation groove is opened on the surface of the extension plate, and a lifting threaded rod is rotatably connected to the inner bottom wall of the installation groove. A lifting drive plate is threadedly connected to the surface of the lifting threaded rod.

[0008] Preferably, the surface of the lifting drive plate is provided with a mounting circular hole that matches the injection molding conduit. The top of the injection molding conduit is fixedly installed on the inner wall of the mounting circular hole. The lifting drive plate is used to drive the injection molding conduit and the positioning circular shell to move up and down.

[0009] Preferably, a rectangular groove is provided on the back of the support frame, and a linkage shaft is rotatably connected to the inner bottom wall of the rectangular groove. A driven gear is fixedly connected to the surface of the linkage shaft. A drive motor is fixedly installed on the inner wall of the rectangular groove. A drive gear is fixedly connected to the rotating shaft of the drive motor. The drive gear meshes with the driven gear. The top end of the linkage shaft extends into the interior of the mixing tank and is fixedly connected to a mixing rod. Several movable frames are evenly distributed on the surface of the mixing rod. A metal defoaming mesh is fixedly installed on the surface of the movable frames.

[0010] Preferably, a drive synchronous pulley is fixedly connected to the surface of the linkage shaft, and a driven synchronous pulley is fixedly installed at the bottom of the lifting threaded rod. The position of the driven synchronous pulley corresponds to that of the drive synchronous pulley, and the drive synchronous pulley and the driven synchronous pulley are connected by a transmission belt. The input end of the delivery pump extends into the interior of the mixing tank, and a servo-driven injection valve is fixedly installed at the input end of the delivery pump. A three-way mixing pipe is fixedly installed on the upper surface of the mixing tank. The two input ends of the three-way mixing pipe extend into the interior of the epoxy resin tank and the silicone tank, respectively, and two precision metering pumps are installed on the surface of the three-way mixing pipe.

[0011] Preferably, an adjusting motor is fixedly installed on the inner wall of the positioning shell, and an adjusting gear is fixedly connected to the rotating shaft of the adjusting motor. A positioning shaft is fixedly installed on the upper surface of the adjusting disc, and the top end of the positioning shaft extends into the interior of the positioning shell. A positioning gear is fixedly connected to the surface of the positioning shaft. A linkage gear is rotatably connected to the surface of the injection molding conduit through a bearing. Four positioning gears are symmetrically distributed around the linkage gear, and all four positioning gears mesh with the linkage gear. The adjusting gear meshes with the linkage gear. The adjusting motor can adjust and position the spacing of the four limiting rods.

[0012] Preferably, the temperature-controlled curing mechanism includes a support truss fixed to the upper surface of the equipment platform. An electric telescopic rod is fixedly installed on the upper surface of the support truss. A temperature-controlled heating cover is fixedly connected to the telescopic end of the electric telescopic rod. Two heating boxes are fixedly installed on the upper surface of the temperature-controlled heating cover. A circulating fan is fixedly installed on the side of the heating box. An electric heating mesh is fixedly installed on the inner wall of the heating box. The input end of the circulating fan extends into the interior of the heating box. A circulating air duct is fixedly embedded on one side of the heating box in relation to the circulating fan. The air inlet end of the circulating air duct extends into the interior of the temperature-controlled heating cover.

[0013] Preferably, a temperature sensor is fixedly embedded in the inner wall of the temperature-controlled heating cover, and a dustproof mesh is fixedly installed on the inner wall of the temperature-controlled heating cover. The position of the dustproof mesh corresponds to the air inlet of the circulating air duct. An annular air guide shell is fixedly installed on the inner wall of the temperature-controlled heating cover. Several hot air outlets are evenly distributed on the surface of the annular air guide shell. The position of the hot air outlets corresponds to the housing limiting groove. The output end of the circulating fan extends into the interior of the annular air guide shell.

[0014] Preferably, a stepper motor is embedded inside the support platform. The rotating shaft of the stepper motor is fixedly connected to the center of the lower surface of the rotating chassis. The stepper motor is used to drive the rotating chassis to rotate and feed materials. A rectangular groove is formed on the surface of the equipment platform. The movable base is slidably disposed on the inner wall of the rectangular groove. Two electric push rods are fixedly disposed on the back of the equipment platform. The telescopic ends of the electric push rods extend into the interior of the rectangular groove and are fixedly connected to the back of the movable base. The movable base can switch positions between the temperature-controlled curing mechanism and the material mixing and injection mechanism.

[0015] An optocoupler packaging process includes the following steps: S1: First, fix the light-emitting device and the photosensitive device inside the package housing, and then put several package housings one by one into the housing limiting groove on the surface of the rotating chassis; S2: Then, the four limiting rods of the housing limiting mechanism are used to press down and position the packaging housing; S3: The epoxy resin and silicone are mixed using the material mixing and injection mechanism, and then the mixed encapsulation material is injected into the encapsulation shell through the injection tube using the delivery pump. S4: Use the movable base to move the rotating chassis below the temperature-controlled curing mechanism, and then use the temperature-controlled heating cover to cure the encapsulation shell at 80℃-100℃ for 30-60 minutes. After cooling, the encapsulation operation is completed.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Enhanced Automation and Production Efficiency: In the positioning support assembly, a stepper motor drives a rotating chassis for material feeding. The movable base can flexibly switch positions between the material mixing and injection mechanism and the temperature-controlled curing mechanism. The coordinated actions of these mechanisms reduce manual intervention, enabling continuous operation and effectively improving production efficiency. The housing limiting mechanism, through the adjustment of the motor, adjusting gears, linkage gears, and positioning gears, can precisely adjust the spacing of the four limiting rods. This adapts to different specifications of packaging housings, eliminating the need for frequent replacement of equipment components due to changes in housing specifications, thus improving the equipment's versatility.

[0017] 2. Improved Packaging Accuracy and Material Quality: In the material mixing and injection mechanism, a precision metering pump accurately controls the feeding ratio of epoxy resin and silicone. The mixing rod and metal defoaming mesh inside the mixing tank, driven by a motor, thoroughly mix the materials and reduce air bubbles. A servo-driven injection valve, in conjunction with the delivery pump, ensures precise injection of the packaging material, reducing material waste and packaging defects, and guaranteeing packaging quality. Simultaneously, multiple mechanisms work together to improve overall coordination. The linkage shaft, through driving synchronous pulleys, driven synchronous pulleys, and a transmission belt, simultaneously drives the mixing operation inside the mixing tank and the lifting and lowering of the injection molding conduit, ensuring coordinated and synchronized material mixing and injection processes, further guaranteeing the continuity and accuracy of the packaging process.

[0018] 3. Ensuring Curing Effect and Product Stability: The temperature-controlled curing mechanism monitors the temperature in real time through a temperature sensor, while the electric heating grid provides a stable heat source. The circulating fan and annular air guide shell work together to create uniform hot air circulation, ensuring the encapsulated shell cures evenly at 80℃-100℃. This guarantees stable curing results and improves product performance consistency. Attached Figure Description Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial side view of the structure of the present invention; Figure 5This is a side view of the positioning support component and structure of the material mixing and injection mechanism of the present invention; Figure 6 This is a schematic diagram of the internal structure of the support frame of the present invention; Figure 7 This is a schematic diagram of the internal structure of the positioning circular shell of the present invention; Figure 8 This is a schematic diagram of the front section structure of the rotating chassis of the present invention; Figure 9 This is a schematic diagram of the top structure of the temperature-controlled heating cover of the present invention; Figure 10 This is a schematic diagram of the internal structure of the temperature-controlled heating cover of the present invention; In the diagram: 1. Equipment platform; 2. Positioning support assembly; 3. Housing limiting mechanism; 4. Temperature-controlled curing mechanism; 5. Material mixing and injection mechanism; 201. Movable base; 202. Support platform; 203. Rotating chassis; 204. Housing limiting groove; 205. Stepper motor; 206. Rectangular slide rail; 207. Electric push rod; 301. Fixing frame; 302. Extension plate; 304. Lifting bar; 305. Positioning shell; 306. Adjusting disc; 307. Limiting rod; 308. Adjusting motor; 309. Adjusting gear; 310. Positioning shaft; 311. Positioning gear; 312. Linkage gear; 401. Support truss; 402. Electric telescopic pole; 403. Temperature-controlled heating cover; 404. Heating box; 405. Circulating fan; 406. Electric heating mesh; 407. Circulating air duct; 408. Temperature sensor; 409. Dustproof mesh plate; 410. Annular air guide shell; 411. Hot air outlet; 501. Injection pipe; 502. Support frame; 503. Epoxy resin tank; 504. Silicone tank; 505. Mixing tank; 506. Transfer pump; 507. Injection conduit; 508. Lifting threaded rod; 509. Lifting drive plate; 510. Linkage shaft; 511. Driven gear; 512. Drive motor; 513. Drive gear; 514. Mixing rod; 515. Movable frame; 516. Metal defoaming screen; 517. Drive synchronous pulley; 518. Driven synchronous pulley; 519. Transmission belt; 520. Servo-driven injection valve; 521. Three-way mixing pipe; 522. Precision metering pump; 523. Transfer hose. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-10 The present invention provides a technical solution: an optocoupler packaging structure, including a device stage 1, on which a positioning support component 2, a housing limiting mechanism 3, a temperature-controlled curing mechanism 4 and a material mixing and injection mechanism 5 are integrated.

[0021] It is worth noting that the positioning support assembly 2 consists of a movable base 201, a support platform 202, a rotating chassis 203, a housing limiting groove 204, a stepper motor 205, a rectangular slide 206, and an electric push rod 207. The movable base 201 is slidably disposed within the rectangular slide 206 opened on the surface of the equipment platform 1, forming a sliding fit between the two, allowing the movable base 201 to move stably along the length direction of the rectangular slide 206; the upper surface of the movable base 201 is fixedly connected to the support platform 202, and the support platform 202 is set perpendicular to the movable base 201, providing stable support for the rotating chassis 203; the surface of the support platform 202 is rotatably connected to the rotating chassis 203, and the rotating chassis 203 can rotate freely around the central axis of the support platform 202, and its surface is evenly provided with several housing limiting grooves 204 for placing the housing to be packaged, achieving the initial positioning of the housing.

[0022] A stepper motor 205 is embedded inside the support platform 202. The rotation shaft of the stepper motor 205 is fixedly connected to the center of the lower surface of the rotating chassis 203. When the stepper motor 205 is working, it can directly drive the rotating chassis 203 to rotate around its own center, thereby realizing that the encapsulated shells in multiple shell limiting grooves 204 are sequentially transferred to different process positions (such as the injection position and the curing position), effectively reducing the intervention of manual feeding and improving the continuity and efficiency of encapsulation.

[0023] Two electric push rods 207 are fixedly installed on the back of the equipment platform 1. The telescopic ends of the electric push rods 207 extend into the interior of the rectangular slide 206 and are fixedly connected to the back of the movable base 201. When the electric push rods 207 extend or retract, they can drive the movable base 201 to make precise position changes between the material mixing and injection mechanism 5 and the temperature-controlled curing mechanism 4 along the rectangular slide 206. This allows the encapsulation shell to be quickly transferred to the curing station after the material is injected, further shortening the process changeover time and improving the overall production efficiency.

[0024] It is worth noting that the housing limiting mechanism 3 is used to precisely press and position the packaging housing to ensure that the housing will not shift during the injection and curing process. It is mainly composed of a fixing frame 301, an extension plate 302, etc.

[0025] The fixing frame 301 is fixed on the surface of the equipment platform 1, located on one side of the positioning support component 2. Its top is fixedly connected to the extension plate 302. The extension plate 302 extends horizontally above the positioning support component 2 to form a transverse structure. Two symmetrical rectangular limiting holes are opened on the surface of the extension plate 302. The inner wall of the rectangular limiting holes is slidably connected to the lifting bar 304. The lifting bar 304 can move up and down along the vertical direction of the rectangular limiting hole. The bottom ends of the two lifting bars 304 are fixedly connected to the positioning shell 305, which drives the positioning shell 305 to rise and fall synchronously, so that the positioning shell 305 can approach or move away from the encapsulation shell on the rotating chassis 203.

[0026] The lower surface of the positioning round shell 305 is rotatably connected to four adjusting discs 306. The four adjusting discs 306 are evenly distributed in a ring. The lower surface of each adjusting disc 306 is fixedly connected to a limiting rod 307. The limiting rod 307 extends vertically downward. When the positioning round shell 305 descends, the limiting rod 307 can contact the upper surface of the encapsulation shell to achieve pressing positioning.

[0027] An adjusting motor 308 is fixedly installed on the inner wall of the positioning shell 305. The rotating shaft of the adjusting motor 308 is fixedly connected to the adjusting gear 309, driving the adjusting gear 309 to rotate. A positioning shaft 310 is fixedly installed on the upper surface of each adjusting disc 306. The top end of the positioning shaft 310 extends upward into the interior of the positioning shell 305, and a positioning gear 311 is fixedly connected to its surface. A linkage gear 312 is rotatably connected to the surface of the injection molding conduit 507 via bearings. Four positioning gears 311 are symmetrically distributed around the linkage gear 312 and all mesh with it. The adjusting gear 309 also meshes with the linkage gear 312. When the adjusting motor 308 operates, the adjusting gear 309 drives the linkage gear 312 to rotate, which in turn drives the four positioning gears 311 to rotate synchronously. This, in turn, drives the adjusting disc 306 to rotate via the positioning shaft 310, ultimately achieving the adjustment of the spacing between the four limit rods 307. This allows for adaptation to different sizes of packaging shells, eliminating the need for frequent replacement of positioning components and significantly improving the equipment's versatility.

[0028] It is worth noting that the material mixing and injection mechanism 5 is used to mix epoxy resin and silicone in proportion and inject them into the encapsulation shell. It mainly consists of an injection tube 501, a support frame 502, an epoxy resin tank 503, a silicone tank 504, a mixing tank 505, etc.

[0029] The injection tube 501 is fixedly embedded in the center of the lower surface of the positioning shell 305, extending vertically downwards, with its bottom end facing the shell limiting groove 204 on the rotating base 203, for injecting the mixed encapsulation material into the encapsulation shell; the back of the fixing frame 301 is fixedly connected to the support frame 502, the support frame 502 extends upwards, and its top end is fixedly connected to the mounting frame, the upper surface of the mounting frame is respectively fixedly provided with an epoxy resin tank 503 and a silicone tank 504, which are arranged side by side for storing the two basic materials required for encapsulation; the upper surface of the support frame 502 is fixedly provided with a mixing tank 505, located below the epoxy resin tank 503 and the silicone tank 504, for receiving and mixing the two materials.

[0030] A delivery pump 506 is fixedly mounted on the surface of the fixed frame 301. The output end of the delivery pump 506 is fixedly connected to one end of the delivery hose 523. A limiting through hole is opened on the upper surface of the positioning shell 305. An injection molding guide tube 507 that can slide up and down is set inside the limiting through hole. The bottom end of the injection molding guide tube 507 is fixedly connected to the input end of the injection tube 501, and the top end is connected to the output end of the delivery pump 506 through the delivery hose 523 to form a material delivery channel. An installation groove is opened on the surface of the extension plate 302. The inner bottom wall of the installation groove is rotatably connected to the lifting threaded rod 508. The surface of the lifting threaded rod 508 is threadedly connected to the lifting drive plate 509. An installation round hole matching the injection molding guide tube 507 is opened on the surface of the lifting drive plate 509. The top of the injection molding guide tube 507 is fixedly installed in the installation round hole. When the lifting threaded rod 508 rotates, the lifting drive plate 509 can drive the injection molding guide tube 507 and the positioning shell 305 to move up and down synchronously, so as to achieve precise alignment between the injection tube 501 and the packaging shell.

[0031] A rectangular groove is provided on the back of the support frame 502. The inner bottom wall of the rectangular groove is rotatably connected to the linkage shaft 510. A driven gear 511 is fixedly connected to the surface of the linkage shaft 510. A drive motor 512 is fixedly installed on the inner wall of the rectangular groove. The rotating shaft of the drive motor 512 is fixedly connected to the drive gear 513. The drive gear 513 meshes with the driven gear 511 to form a transmission structure. The top end of the linkage shaft 510 extends upward into the interior of the mixing tank 505 and is fixedly connected to a mixing rod 514. The surface of the mixing rod 514 is uniform. Several movable frames 515 are evenly distributed, and a metal debubbling screen 516 is fixedly installed on the surface of the movable frame 515. When the drive motor 512 works, it drives the linkage shaft 510 to rotate through the drive gear 513 and the driven gear 511, thereby causing the mixing rod 514, the movable frame 515 and the metal debubbling screen 516 to rotate in the mixing tank 505, so as to achieve full mixing of materials. At the same time, the metal debubbling screen 516 can puncture the air bubbles generated during the mixing process, ensuring the uniformity of the packaging material and reducing packaging defects caused by air bubbles.

[0032] A drive synchronous pulley 517 is fixedly connected to the surface of the linkage shaft 510, and a driven synchronous pulley 518 is fixedly installed at the bottom of the lifting threaded rod 508. The drive synchronous pulley 517 and the driven synchronous pulley 518 are connected by a transmission belt 519. When the linkage shaft 510 rotates, the lifting threaded rod 508 can be rotated by the drive synchronous pulley 517, the transmission belt 519 and the driven synchronous pulley 518, so that the mixing operation and the lifting action of the injection tube 501 are coordinated, improving the continuity and accuracy of the process.

[0033] The input end of the delivery pump 506 extends into the interior of the mixing tank 505 and is fixed with a servo-driven injection valve 520 for precise control of the material output. A three-way mixing pipe 521 is fixedly installed on the upper surface of the mixing tank 505. The two input ends of the three-way mixing pipe 521 extend into the interior of the epoxy resin tank 503 and the silicone tank 504, respectively. Two precision metering pumps 522 are installed on its surface to control the feeding amount of the two materials, ensuring accurate material ratio and improving the stability of packaging quality.

[0034] It is worth noting that the temperature-controlled curing mechanism 4 is used to heat and cure the encapsulation shell after the material is injected. It mainly consists of a support truss 401, an electric telescopic rod 402, a temperature-controlled heating cover 403, a heating box 404, a circulating fan 405, an electric heating mesh 406, a circulating air duct 407, a temperature sensor 408, a dustproof mesh plate 409, an annular air guide shell 410, and a hot air outlet 411.

[0035] The support truss 401 is fixed on the upper surface of the equipment platform 1, located on one side of the positioning support assembly 2, and on both sides of the rotating chassis 203, respectively, with the housing limiting mechanism 3. An electric telescopic rod 402 is fixedly installed on the upper surface of the support truss 401. The telescopic end of the electric telescopic rod 402 extends downward and is fixedly connected to the temperature-controlled heating cover 403. The extension and retraction of the electric telescopic rod 402 can drive the temperature-controlled heating cover 403 to move up and down, thereby enabling the covering or detachment of the encapsulated housing on the rotating chassis 203.

[0036] Two heating boxes 404 are fixedly installed on the upper surface of the temperature-controlled heating cover 403, and the two heating boxes 404 are symmetrically distributed. A circulating fan 405 is fixedly installed on the side of each heating box 404, and an electric heating mesh 406 is fixedly installed on the inner wall of the heating box 404. The input end of the circulating fan 405 extends into the interior of the heating box 404 to extract the hot air inside the heating box 404. A circulating air guide pipe 407 is fixedly embedded on the side of the heating box 404 away from the circulating fan 405. The air inlet end of the circulating air guide pipe 407 extends into the interior of the temperature-controlled heating cover 403 to form an air circulation channel.

[0037] A temperature sensor 408 is fixedly embedded in the inner wall of the temperature-controlled heating cover 403 to monitor the internal temperature of the temperature-controlled heating cover 403 in real time and ensure stable curing temperature. A dustproof mesh plate 409 is also fixedly installed on its inner wall. The position of the dustproof mesh plate 409 corresponds to the air inlet of the circulating air duct 407, which can filter the air entering the circulating air duct 407 and prevent dust from contaminating the packaging shell. An annular air guide shell 410 is fixedly installed on the inner wall of the temperature-controlled heating cover 403. Several hot air outlets 411 are evenly distributed on the surface of the annular air guide shell 410. The position of the hot air outlets 411 corresponds to the shell limiting groove 204 on the rotating base 203. The output end of the circulating fan 405 extends into the interior of the annular air guide shell 410. When the circulating fan 405 is working, the hot air in the heating box 404 is sent into the annular air guide shell 410 by the circulating fan 405, and then blown evenly to each packaging shell through the hot air outlets 411 to achieve uniform heating and curing.

[0038] Working principle: When using this optocoupler packaging structure, first perform step S1: fix the light-emitting device and the photosensitive device inside the packaging housing, and then place several packaging housings one by one into the housing limiting groove 204 on the surface of the rotating chassis 203 to complete the initial loading.

[0039] Next, execute step S2: Activate the housing limiting mechanism 3, and drive the lifting bar 304 and the positioning round shell 305 to descend via the lifting drive plate 509, so that the four limiting top rods 307 are close to the packaging housing; if the packaging housing size is different, the adjusting motor 308 can be activated, and the distance between the four limiting top rods 307 can be adjusted by the transmission of the adjusting gear 309, the linkage gear 312 and the positioning gear 311, until the limiting top rods 307 are pressed tightly against the upper surface of the packaging housing to prevent the housing from shifting during material injection.

[0040] Then, step S3 is executed: the material mixing and injection mechanism 5 is activated, and the materials in the epoxy resin tank 503 and silicone tank 504 are transported to the mixing tank 505 through the three-way mixing pipe 521. The precision metering pump 522 controls the ratio of the two materials. At the same time, the drive motor 512 drives the linkage shaft 510 to rotate through the drive gear 513 and the driven gear 511. The linkage shaft 510 drives the mixing rod 514, the movable frame 515, and the metal defoaming screen 516 to rotate inside the mixing tank 505, so as to fully mix the materials and remove the foam. Remove air bubbles; the mixed material enters the delivery pump 506 through the servo-driven injection valve 520, and then is injected into the encapsulation housing through the delivery hose 523, injection conduit 507 and injection tube 501; during this process, the linkage shaft 510 drives the lifting threaded rod 508 to rotate through the drive synchronous pulley 517, transmission belt 519 and driven synchronous pulley 518, so that the lifting drive plate 509 drives the injection conduit 507 and the positioning round shell 305 to rise and fall synchronously, ensuring that the injection tube 501 is accurately aligned with the injection port of the encapsulation housing.

[0041] After the filling is completed, step S4 is executed: the electric push rod 207 is activated, which drives the movable base 201 to slide along the rectangular slide 206, moving the rotating chassis 203 to below the temperature-controlled curing mechanism 4; the electric telescopic rod 402 is activated, which drives the temperature-controlled heating cover 403 to descend and cover the rotating chassis 203; the electric heating grid 406 works to generate heat, and the circulating fan 405 sends the hot air in the heating box 404 into the annular air guide shell 410, which blows the hot air out of the hot air outlet 411 onto the encapsulation shell; the temperature sensor 408 monitors the temperature in real time to ensure that the internal temperature of the temperature-controlled heating cover 403 is maintained at 80℃-100℃, and the encapsulation shell is cured for 30-60 minutes; after curing, the temperature-controlled heating cover 403 is raised, the movable base 201 drives the rotating chassis 203 back to the initial position, the stepper motor 205 drives the rotating chassis 203 to rotate, and the next set of encapsulation shells is transferred to the filling position. At the same time, the cured encapsulation shell is taken out, and after cooling, the entire encapsulation operation is completed.

[0042] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. An optocoupler packaging structure, comprising a device stage (1), characterized in that: The surface of the equipment platform (1) is provided with a positioning support assembly (2), a shell limiting mechanism (3), a temperature-controlled curing mechanism (4), and a material mixing and injection mechanism (5). The positioning support assembly (2) includes a movable base (201), a support platform (202) is fixed on the upper surface of the movable base (201), a rotating chassis (203) is rotatably provided on the surface of the support platform (202), and a plurality of housing limiting grooves (204) for placing the encapsulation housing are opened on the surface of the rotating chassis (203). The housing limiting mechanism (3) includes a fixed frame (301), an extension plate (302) is fixedly connected to the top of the fixed frame (301), two rectangular limiting holes are opened on the surface of the extension plate (302), lifting bars (304) are slidably arranged on the inner wall of the rectangular limiting holes, and positioning round shells (305) are fixedly connected to the bottom ends of the two lifting bars (304). Four adjusting discs (306) are rotatably connected to the lower surface of the positioning round shells (305), and limiting top rods (307) are fixedly connected to the lower surface of the adjusting discs (306). The material mixing and injection mechanism (5) includes an injection pipe (501) fixedly embedded in the center of the lower surface of the positioning shell (305), and a support frame (502) fixedly connected to the back of the fixing frame (301). The top of the support frame (502) is fixedly connected to an installation frame. An epoxy resin tank (503) and a silicone tank (504) are fixedly installed on the upper surface of the installation frame. A mixing tank (505) is fixed on the upper surface of the support frame (502).

2. The optocoupler packaging structure according to claim 1, characterized in that: A delivery pump (506) is fixedly installed on the surface of the fixed frame (301). A delivery hose (523) is fixedly connected to the output end of the delivery pump (506). A limiting through hole is opened on the upper surface of the positioning shell (305). An injection molding conduit (507) that can slide up and down is provided inside the limiting through hole. The bottom end of the injection molding conduit (507) is fixedly connected to the input end of the injection pipe (501). The end of the delivery hose (523) away from the delivery pump (506) is fixedly connected to the input end of the injection molding conduit (507). An installation groove is opened on the surface of the extension plate (302). A lifting threaded rod (508) is rotatably connected to the inner bottom wall of the installation groove. A lifting drive plate (509) is threadedly connected to the surface of the lifting threaded rod (508).

3. The optocoupler packaging structure according to claim 2, characterized in that: The surface of the lifting drive plate (509) is provided with a mounting hole that matches the injection conduit (507). The top of the injection conduit (507) is fixedly installed on the inner wall of the mounting hole. The lifting drive plate (509) is used to drive the injection conduit (507) and the positioning shell (305) to move up and down.

4. The optocoupler packaging structure according to claim 3, characterized in that: The support frame (502) has a rectangular groove on its back. A linkage shaft (510) is rotatably connected to the inner bottom wall of the rectangular groove. A driven gear (511) is fixedly connected to the surface of the linkage shaft (510). A drive motor (512) is fixedly installed on the inner wall of the rectangular groove. A drive gear (513) is fixedly connected to the rotating shaft of the drive motor (512). The drive gear (513) meshes with the driven gear (511). The top end of the linkage shaft (510) extends into the interior of the mixing tank (505) and is fixedly connected to a mixing rod (514). Several movable frames (515) are evenly distributed on the surface of the mixing rod (514). A metal defoaming mesh (516) is fixedly installed on the surface of the movable frame (515).

5. The optocoupler packaging structure according to claim 4, characterized in that: A drive synchronous wheel (517) is fixedly connected to the surface of the linkage shaft (510). A driven synchronous wheel (518) is fixedly installed at the bottom of the lifting threaded rod (508). The position of the driven synchronous wheel (518) corresponds to that of the drive synchronous wheel (517). The drive synchronous wheel (517) and the driven synchronous wheel (518) are connected by a transmission belt (519). The input end of the delivery pump (506) extends into the interior of the mixing tank (505). A servo-driven injection valve (520) is fixedly installed at the input end of the delivery pump (506). A three-way mixing pipe (521) is fixedly installed on the upper surface of the mixing tank (505). The two input ends of the three-way mixing pipe (521) extend into the interior of the epoxy resin tank (503) and the silicone tank (504), respectively. Two precision metering pumps (522) are installed on the surface of the three-way mixing pipe (521).

6. The optocoupler packaging structure according to claim 5, characterized in that: An adjusting motor (308) is fixedly installed on the inner wall of the positioning shell (305). An adjusting gear (309) is fixedly connected to the rotating shaft of the adjusting motor (308). A positioning shaft (310) is fixedly installed on the upper surface of the adjusting disc (306). The top end of the positioning shaft (310) extends into the interior of the positioning shell (305), and a positioning gear (311) is fixedly connected to the surface of the positioning shaft (310). A linkage gear (312) is rotatably connected to the surface of the injection molding conduit (507) through a bearing. Four positioning gears (311) are symmetrically distributed around the linkage gear (312), and all four positioning gears (311) mesh with the linkage gear (312). The adjusting gear (309) meshes with the linkage gear (312). The adjusting motor (308) can adjust and position the spacing of the four limit rods (307).

7. The optocoupler packaging structure according to claim 6, characterized in that: The temperature-controlled curing mechanism (4) includes a support truss (401) fixed on the upper surface of the equipment platform (1). An electric telescopic rod (402) is fixedly installed on the upper surface of the support truss (401). A temperature-controlled heating cover (403) is fixedly connected to the telescopic end of the electric telescopic rod (402). Two heating boxes (404) are fixedly installed on the upper surface of the temperature-controlled heating cover (403). A circulating fan (405) is fixedly installed on the side of the heating box (404). An electric heating mesh (406) is fixedly installed on the inner wall of the heating box (404). The input end of the circulating fan (405) extends into the interior of the heating box (404). A circulating air guide pipe (407) is fixedly embedded on one side of the heating box (404) in accordance with the circulating fan (405). The air inlet end of the circulating air guide pipe (407) extends into the interior of the temperature-controlled heating cover (403).

8. The optocoupler packaging structure according to claim 7, characterized in that: A temperature sensor (408) is fixedly embedded in the inner wall of the temperature-controlled heating cover (403), and a dustproof mesh plate (409) is fixedly installed on the inner wall of the temperature-controlled heating cover (403). The position of the dustproof mesh plate (409) corresponds to the air inlet of the circulating air duct (407). An annular air guide shell (410) is fixedly installed on the inner wall of the temperature-controlled heating cover (403). Several hot air outlets (411) are evenly distributed on the surface of the annular air guide shell (410). The position of the hot air outlets (411) corresponds to the housing limiting groove (204). The output end of the circulating fan (405) extends into the interior of the annular air guide shell (410).

9. The optocoupler packaging structure according to claim 8, characterized in that: A stepper motor (205) is embedded inside the support platform (202). The rotating shaft of the stepper motor (205) is fixedly connected to the center of the lower surface of the rotating chassis (203). The stepper motor (205) is used to drive the rotating chassis (203) to rotate and feed materials. A rectangular groove (206) is opened on the surface of the equipment platform (1). The movable base (201) is slidably disposed on the inner wall of the rectangular groove (206). Two electric push rods (207) are fixedly disposed on the back of the equipment platform (1). The telescopic end of the electric push rod (207) extends into the interior of the rectangular groove (206) and is fixedly connected to the back of the movable base (201). The movable base (201) can switch positions between the temperature-controlled curing mechanism (4) and the material mixing and injection mechanism (5).

10. According to the optocoupler packaging structure described in claims 1-9, an optocoupler packaging process is now proposed, comprising the following steps: S1: First, fix the light-emitting device and the photosensitive device inside the package housing, and then put several package housings one by one into the housing limiting groove on the surface of the rotating chassis; S2: Then, the four limiting rods of the housing limiting mechanism are used to press down and position the packaging housing; S3: The epoxy resin and silicone are mixed using the material mixing and injection mechanism, and then the mixed encapsulation material is injected into the encapsulation shell through the injection tube using the delivery pump. S4: Use the movable base to move the rotating chassis below the temperature-controlled curing mechanism, and then use the temperature-controlled heating cover to cure the encapsulation shell at 80℃-100℃ for 30-60 minutes. After cooling, the encapsulation operation is completed.

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