Automatic fuse assembly
By combining current welding and high-frequency welding components, the problem of unstable welding quality caused by a single welding process is solved, achieving high efficiency, stability and density in fuse welding, which is suitable for the miniaturization and high power density development of electronic devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN LANGCENT ELECTRONICS CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, the welding quality of fuses is unstable due to a single welding process. This is especially true in miniaturized, high-power-density electronic devices, where there are safety hazards such as loose welds and easy joint failures.
A synergistic welding process combining current welding components and high-frequency welding components is adopted. Current welding achieves the initial connection between the molten wire and the lead wire, while high-frequency welding provides localized rapid heating to fill weld pores and improve weld density and interfacial bonding.
To ensure consistent welding quality, prevent fuses from overheating and becoming brittle, reduce contact resistance, enhance the environmental stability of the joints, and meet the miniaturization and high power density requirements of electronic equipment.
Smart Images
Figure CN224537009U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to automated mechanical processing, specifically an automatic fuse assembly device. Background Technology
[0002] As a core overcurrent protection component in a circuit system, the quality of the welding between the fuse and the electrode or substrate directly determines the reliability of the circuit protection. The welded joint must simultaneously meet the core requirements of low contact resistance, high mechanical strength, and excellent thermal stability. Currently, the mainstream welding process for fuses in the industry is a single welding process. For example, patent application number CN202510169858.9 provides an automatic assembly machine for plastic-cased fuses. This document provides a currently mainstream current spot welding technology for welding fuses. The main reason for this is that single current welding is widely used in the welding of fuses in low-to-mid-range low-voltage circuits due to its low equipment cost, low operating threshold, and strong adaptability to simple working conditions.
[0003] However, as electronic devices develop towards miniaturization, high power density, and high reliability, the technical bottlenecks of single-step current welding have gradually become apparent. On the one hand, current welding achieves fusion by directly conducting heat through electrodes, resulting in a wide heating range and a slow heating rate. This can easily lead to localized overheating, coarse grains, or even embrittlement of the fuse body, damaging its original overcurrent fusing characteristics. On the other hand, single-step current welding makes it difficult to precisely control the penetration depth and weld formation. Tiny pores or inclusions are easily left inside the weld, which not only increases contact resistance but also reduces joint density and fatigue resistance. Under long-term fluctuations in current load or changes in ambient temperature and humidity, joint failure and desoldering can easily occur, posing safety hazards.
[0004] Therefore, developing an automatic fuse assembly device that combines multiple welding processes to solve the problem of unstable welding quality caused by a single welding process in the existing technology has become an urgent problem to be solved. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic fuse assembly device.
[0006] This utility model provides an automatic fuse assembly device, comprising: A rotating disc is used to drive the fuse body to rotate to each process. The rotating disc has grippers arranged at intervals along the circumference of the disc. Along the outer side of the rotating disc, there are an inner core feeding assembly, a vertically reciprocating wire needle tube, a wire feeding and wrapping assembly, a vertically reciprocating tin carrying tank, a current welding assembly, a high-frequency welding assembly, a shell conveying and installation assembly, and a finished product collection assembly. When the gripper moves to the position to grip the inner core, the inner core feeding assembly horizontally conveys the inner core into the gripper; When the gripper moves to the wire insertion position, the wire needle tube moves vertically to deliver the wire to the inner core. Above the wire needle tube, there is also a horizontally reciprocating wire cutter that moves horizontally to cut the wire at the end of the wire needle tube. When the gripper moves to the tin-immersion position, the tin carrier moves vertically to submerge the lower part of the lead wire in molten tin. When the gripper moves to the fuse assembly position, the wire feeding and wrapping assembly is used to place and fix the fuse at the lower end of the lead wire; The current welding assembly includes a horizontally reciprocating welding block. When the gripper moves to the current welding position, the welding block moves horizontally to the connection point between the welding wire and the lead wire. The high-frequency welding assembly includes an electromagnetic induction coil, which is connected to a vertical push rod that can reciprocate vertically. When the gripper moves to the high-frequency welding position, the vertical push rod moves vertically to completely enclose the connection between the molten wire and the lead wire inside the electromagnetic induction coil. When the gripper moves to the housing mounting position, the housing conveying and mounting assembly accurately fits and fixes the housing onto the inner core; When the gripper moves to the finished product inspection position, the finished product collection component is used to remove the assembled fuse.
[0007] Furthermore, the current welding assembly also includes a support platform and a drive cylinder. The support platform is provided with two horizontal slide rails, and each horizontal slide rail is provided with two corresponding sliders. The welding block is placed on the slider, and the welding head of the welding block faces the outer side of the other slider on the same slide rail. The drive cylinder is connected to each slider drive.
[0008] Furthermore, the high-frequency welding assembly also includes a fixed platform with a vertical channel. A vertical push rod is embedded in the vertical channel and slidably connected to the vertical channel. The lower end of the vertical push rod is connected to a drive cylinder, and its upper end protrudes from the vertical channel and is connected to a frequency converter cabinet. An electromagnetic induction coil is horizontally arranged and electrically connected to the frequency converter cabinet.
[0009] Furthermore, the automatic fuse assembly device also includes a welding inspection component, which is located next to the high-frequency welding component. The welding inspection assembly includes a CCD inspection camera and a light-emitting plate. The CCD inspection camera and the light-emitting plate are spaced apart. The light-emitting surface of the light-emitting plate faces the lens direction of the CCD inspection camera, and the lens direction of the CCD inspection camera is opposite to the welding position of the fuse and the lead wire.
[0010] Furthermore, the inner core feeding assembly includes an inner core vibratory plate and a feeding guide rail. The discharge end of the inner core vibratory plate is connected to the feeding guide rail. The discharge end of the feeding guide rail is provided with a horizontal pusher block, and the horizontal pusher block is also connected to a drive cylinder. A carrying frame is also provided next to the horizontal pusher block. A drive cylinder is provided at the upper end of the carrying frame, and a pressing block is connected to the drive end of the drive cylinder.
[0011] Furthermore, the wire feeding and wrapping assembly includes a wire flattening mechanism, a wire bending mechanism disposed next to the wire flattening mechanism, and a wrapping mechanism disposed next to the wire bending mechanism.
[0012] Furthermore, the lead flattening mechanism includes a fixed frame and a flattening block. The fixed frame is provided with a fixed block facing the flattening block, and the flattening block is slidably connected to the fixed frame by a drive cylinder. The lead wire bending mechanism includes a mounting frame box, a pressure block is movably connected to the mounting frame box, a bending head is provided on the pressure block, and the pressure block is connected to a drive cylinder embedded in the mounting frame box. The wire wrapping mechanism includes a wire guide wheel, a wire guide tube at the output end of the wire guide wheel, a horizontally reciprocating wire cutter at the opening of the wire guide tube, and a drive cylinder connected to the wire cutter. The wire wrapping mechanism also includes a vertical rotating platform arranged in the vertical direction. A wire clamp is set on the vertical rotating platform. The clamp head of the wire clamp is located outside the wire cutter. A horizontal fixing rod is also set on the clamp body of the wire clamp. A horizontal push bar is also set on the outside of the wire clamp. The horizontal push bar is connected to a drive cylinder. The wire wrapping mechanism also includes a wire wrapping plate. The top of the wire wrapping plate is located at the end of the moving rail that transports the fuse in the fuse clamp. The bottom of the wire wrapping plate abuts against the lifting block, which is connected to a drive cylinder.
[0013] Furthermore, the tin-bearing tank is connected to the lifting block, and the lifting block is connected to a drive cylinder.
[0014] Furthermore, the automatic fuse assembly device also includes a wire pull assembly located next to the high-frequency welding assembly, and a resistance checking assembly located next to the wire pull assembly. The cable pulling assembly includes a support frame, on which a cable clamp that can reciprocate vertically is slidably connected, and a top holding block that can reciprocate vertically is also provided on the support frame. The top holding block is located directly above the cable clamp, and the top of the top holding block is connected to the output end of the drive cylinder. The resistance testing assembly includes a testing bracket, on which a conductive testing clamp is mounted, and a drive cylinder is connected to the clamp body of the conductive testing clamp.
[0015] Furthermore, the shell conveying and installation assembly includes a shell vibratory plate and a feeding guide rail. The discharge end of the shell vibratory plate is connected to the feeding guide rail. A through hole is opened on the discharge port of the feeding guide rail. A shell-retrieving turntable is also set above the discharge port of the feeding guide rail. A shell-retrieving port is opened on the shell-retrieving turntable, which is directly opposite the through hole. A vertically reciprocating shell-pushing rod is set below the discharge port of the feeding guide rail. A drive cylinder is connected to the bottom end of the shell-pushing rod. The top end of the shell-pushing rod extends directly below the through hole of the feeding guide rail. A heating tube is set directly above the shell-retrieving port. The heating tube is connected to a silicone storage tank containing silicone. The outer shell conveying and installation assembly also includes a top shell rod that moves vertically reciprocating. The top of the top shell rod is located below the bottom of the shell removal port, and the bottom of the top shell rod is connected to a drive cylinder. A mounting frame is provided on the side of the shell-removing turntable. A fixed platform is provided on the mounting frame, and a vertically reciprocating mounting block is also provided on the mounting frame. A drive cylinder is connected to the top of the mounting block, and its bottom end faces the top surface of the fixed platform. The finished product collection assembly includes a fixed carriage with a slider slidably connected to it. A picking pin is connected to the bottom of the slider, and the top of the slider is connected to the output end of the drive cylinder. The picking pin is located directly above the gripper.
[0016] In summary, this utility model has the following advantages compared with the prior art: This product utilizes a secondary welding process achieved through the synergy of current welding and high-frequency welding components, effectively overcoming the technical bottlenecks of existing single welding processes. The initial current welding establishes a preliminary stable connection between the fuse wire and the lead wire, laying the foundation for the joint. The secondary high-frequency welding, on the other hand, employs an electromagnetic induction coil to achieve rapid localized heating. This avoids the overheating and embrittlement of the fuse body caused by the wide heating range and slow temperature rise of single current welding, ensuring its core overcurrent fusing characteristics. Furthermore, it fills in any remaining micropores and inclusions in the current weld, improving weld density and reducing contact resistance. Simultaneously, it strengthens the joint interface bonding and environmental stability, reducing the risk of joint failure during long-term use. Moreover, the secondary welding process relies on the automated rotation of the rotating disk and precise component positioning, requiring no manual intervention. This ensures consistent welding quality across batches, meeting the demands of miniaturized and high-power-density electronic equipment. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the automatic fuse assembly of this utility model. Figure 2 This is a schematic diagram of the component structure of the core-removing station of this utility model; Figure 3This is a schematic diagram of the component structure of the upper lead station of this utility model; Figure 4 This is a schematic diagram of the component structure of the lead flattening station of this utility model; Figure 5 This is a schematic diagram of the component structure of the lead wire bending station of this utility model; Figure 6 This is a schematic diagram of the component structure of the flux immersion station of this utility model; Figure 7 This is a schematic diagram of the component structure of the tin-dipping station of this utility model; Figure 8 This is a schematic diagram of the component structure of the wire feeding and wrapping station of this utility model; Figure 9 This is a schematic diagram of the component structure of the current welding station of this utility model; Figure 10 This is a schematic diagram of the component structure of the high-frequency welding station of this utility model; Figure 11 This is a schematic diagram of the component structure of the welding inspection station of this utility model; Figure 12 This is a schematic diagram of the component structure of the lead wire pulling station and the lead wire testing station of this utility model; Figure 13 This is a schematic diagram of the component structure of the resistance testing station of this utility model; Figure 14 This is a schematic diagram of the component structure of the shell removal station of this utility model; Figure 15 This is a schematic diagram of the component structure at the preliminary assembly station of the outer shell and inner core of this utility model; Figure 16 This is a schematic diagram of the component structure of the assembly and calibration station for the outer shell and inner core of this utility model; Figure 17 This is a schematic diagram of the component structure of the finished product collection station of this utility model.
[0018] Figure Labels
[0019] 1-Rotating disc; 2-Gripper; 3-Wire needle tube; 4-Soldering tank; 5-Wire cutter; 6-Welding block; 7-Electromagnetic induction coil; 8-Drive cylinder; 9-Variable frequency cabinet; 10-CCD inspection camera; 11-Light-emitting board; 12-Inner core vibratory plate; 13-Feeding guide rail; 14-Horizontal pusher block; 15-Pressing block; 16-Flattening block; 17-Fixing block; 18-Pressure block; 19-Bending head; 20-Wire guide wheel; 21-Wire guide tube; 22-Wire cutter; 23- 24-Fix clamp; 25-Horizontal fixing rod; 26-Horizontal push bar; 27-Wire wrapping plate; 28-Pull clamp; 29-Top holding block; 30-Shell vibrating plate; 31-Shell removal turntable; 32-Shell pusher; 33-Silicone storage tank; 34-Top shell rod; 35-Mounting block; 36-Material picking needle; 37-Lead clamp; 38-Fluoride bucket; 39-Fluoride spoon; 40-Air pump slider; 41-Conductivity detection clamp; 42-Fixed platform; 43-Finished product collection bucket. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0022] According to one embodiment of the present invention, such as Figures 1-17 As shown, an automatic fuse assembly device includes: A rotating disk 1 is used to drive the fuse body to rotate to each process. The rotating disk 1 is provided with grippers 2 arranged at intervals along the circumference of the disk. Along the outer side of the rotating disk 1, there are an inner core feeding assembly, a vertically reciprocating wire needle tube 3, a wire feeding and wrapping assembly, a vertically reciprocating tin carrying tank 4, a current welding assembly, a high-frequency welding assembly, a shell conveying and installation assembly, and a finished product collection assembly. When the gripper 2 moves to the position to grip the inner core, the inner core feeding assembly horizontally conveys the inner core into the gripper 2; When the gripper 2 moves to the insertion position, the wire needle tube 3 moves vertically to deliver the wire to the inner core. Above the wire needle tube 3, there is also a horizontally reciprocating wire cutter 5. The wire cutter 5 moves horizontally to cut the wire at the end of the wire needle tube 3. When the gripper 2 moves to the tin-immersion position, the tin-carrying tank 4 moves vertically to submerge the lower part of the lead wire in molten tin; When the gripper 2 moves to the fuse assembly position, the wire feeding and wrapping assembly is used to place and fix the fuse at the lower end of the lead wire; The current welding assembly includes a horizontally reciprocating welding block 6. When the gripper 2 moves to the current welding position, the welding block 6 moves horizontally to the connection point between the welding wire and the lead wire. The high-frequency welding assembly includes an electromagnetic induction coil 7, which is connected to a vertical push rod capable of vertical reciprocating motion. When the gripper 2 moves to the high-frequency welding position, the vertical push rod moves vertically to completely enclose the connection between the molten wire and the lead wire inside the electromagnetic induction coil 7. When the gripper 2 moves to the housing mounting position, the housing conveying and mounting assembly accurately fits and fixes the housing onto the inner core; When the gripper 2 moves to the finished product detection position, the finished product collection component is used to remove the assembled fuse.
[0023] In this embodiment, a pair of wire feeding wheels are provided below the wire needle tube 3, with a gap between them for the lead wire to pass through. The lead wire is driven upward by the rotation of the wire feeding wheels and fed into the inside of the wire needle tube 3. A lead wire clamp 37 is provided above the wire needle tube 3. When the clamp 2 moves to the wire insertion position, the wire needle tube 3 clamps the lead wire and moves vertically to insert the lead wire into the inner core. At the same time, the lead wire clamp 37 clamps the upper end of the lead wire. Subsequently, the wire needle tube 3 descends to the initial position. At this time, the wire cutter 5 moves horizontally to the upper end of the wire needle tube 3 and cuts the lead wire, thereby completing the precise insertion and cutting of the lead wire. Compared with the traditional wire pulling assembly, the traditional wire pulling assembly has a complex structure, many parts, and a high degree of integration. When some parts need maintenance or replacement, the entire wire pulling assembly needs to be disassembled, which is time-consuming and labor-intensive, affecting production efficiency. The wire pulling assembly of this product adopts a modular design, with the wire feeding wheel, wire needle tube 3 and wire clamp 37 independently assembled on the bracket. When a certain component fails, only the specific component on the bracket needs to be disassembled for maintenance and replacement, without disassembling the entire wire pulling assembly, which greatly saves maintenance time and improves the production and operation efficiency of the equipment.
[0024] In one possible implementation, the current welding assembly further includes a support platform and a drive cylinder 8. The support platform is provided with two horizontal slide rails, and each horizontal slide rail is provided with two corresponding sliders. The welding block 6 is disposed on the sliders, and the welding head of the welding block 6 faces the outer side of the other slider on the same slide rail. The drive cylinder 8 is connected to each slider in a drive connection.
[0025] In this embodiment, the drive cylinder 8 pushes the slider to slide forward along the horizontal slide rail, so that the welding head of the welding block 6 is in close contact with the connection part of the molten wire and the lead wire, thereby achieving efficient and stable current welding.
[0026] In one possible implementation, the high-frequency welding assembly further includes a fixed platform with a vertical channel. A vertical push rod is embedded in the vertical channel and slidably connected to it. The lower end of the vertical push rod is connected to a drive cylinder 8, and its upper end protrudes from the vertical channel and is connected to a frequency converter cabinet 9. The electromagnetic induction coil 7 is horizontally arranged and electrically connected to the frequency converter cabinet 9.
[0027] In this embodiment, after the fuse completes one current contact welding, the gripper 2 moves the inner core to the high-frequency welding position. At this time, the drive cylinder 8 is activated, which drives the vertical push rod to move upward, thereby pushing the frequency converter cabinet 9 and the electromagnetic induction coil 7 to move upward synchronously, so that the connection between the fuse and the lead wire is completely placed inside the electromagnetic induction coil 7. Then the frequency converter cabinet 9 is powered on, and the electromagnetic induction coil 7 generates a high-frequency magnetic field to uniformly heat the connection between the fuse and the lead wire until the welding is completed. Then the vertical push rod is reset to prepare for the next welding.
[0028] In one possible implementation, the automatic fuse assembly device further includes a welding detection component, which is disposed next to the high-frequency welding component; The welding inspection assembly includes a CCD inspection camera 10 and a light-emitting plate 11, which are spaced apart. The light-emitting surface of the light-emitting plate 11 faces the lens direction of the CCD inspection camera 10, and the lens direction of the CCD inspection camera 10 is opposite to the welding position of the fuse and the lead wire.
[0029] In this embodiment, after the fuse and lead wire are high-frequency welded, it is necessary to check whether there is any incomplete welding or uneven welding at the welded part. At this time, the CCD inspection camera 10 automatically aligns with the welding position and provides a uniform background light source through the light-emitting plate 11 to enhance image contrast, thereby accurately identifying the welding quality. A fixed column is set next to the welding inspection component, and a vertically moving defective product pusher is set on the fixed column. The defective product pusher is connected to a driving device. When the CCD inspection camera 10 feeds the image back to the background control system, the background control system identifies whether the object in the image is a good product. Then, the gripper moves the inner core directly below the defective product pusher. At this time, when the object is a defective product signal, the control system activates the driving device to move the defective product pusher downward, pushing the defective product out of the gripper, completing the automatic rejection of defective products, and ensuring the quality stability of subsequent processes. If the object is a qualified product signal, the gripper continues to move the inner core to the next station.
[0030] In one possible implementation, the inner core feeding assembly includes an inner core vibratory plate 12 and a feeding guide rail 13. The discharge end of the inner core vibratory plate 12 is connected to the feeding guide rail 13. The discharge end of the feeding guide rail 13 is provided with a horizontal pusher block 14. The horizontal pusher block 14 is also connected to a drive cylinder 8. A carrying frame is also provided on the side of the horizontal pusher block 14. A drive cylinder 8 is provided on the upper end of the carrying frame. A pressing block 15 is connected to the drive end of the drive cylinder 8.
[0031] In this embodiment, when the inner core moves to the discharge end of the feeding guide rail 13, the drive cylinder 8 drives the horizontal pusher block 14 to approach the inner core and push the inner core into the clamping area of the gripper 2. Because the inner core may be offset or have an irregular posture due to factors such as the deviation of the pushing trajectory and slight differences in the shape of the inner core itself during the process of being pushed to the clamping area of the gripper 2 by the horizontal pusher block 14 (such as locally protruding from the clamping area or failing to completely fit the bottom surface of the clamping space), after the inner core loading operation is completed, the gripper 2 will clamp the inner core and move it to a flat position. At this time, the drive cylinder 8 on the carrier drives the pressing block 15 to move downward in the vertical direction, applying vertical pressure to the inner core in the clamping area. Through this pressing action, the spatial posture of the inner core can be effectively corrected, so that the inner core is accurately fitted into the clamping space of the gripper 2.
[0032] In one possible implementation, the wire feeding and wrapping assembly includes a lead wire flattening mechanism, a lead wire bending mechanism disposed next to the lead wire flattening mechanism, and a wrapping mechanism disposed next to the lead wire bending mechanism.
[0033] In one possible implementation, the lead flattening mechanism includes a fixed frame and a flattening block 16. The fixed frame is provided with a fixed block 17 facing the flattening block 16. The flattening block 16 is slidably connected to the fixed frame by a drive cylinder 8. The lead wire bending mechanism includes a mounting frame box, on which a pressure block 18 is movably connected, and a bending head 19 is provided on the pressure block 18. The pressure block 18 is connected to a drive cylinder 8 embedded in the mounting frame box. The wire wrapping mechanism includes a wire guide wheel 20, and a wire guide tube 21 is provided at the output end of the wire guide wheel 20. A horizontally reciprocating wire cutter 22 is provided at the opening of the wire guide tube 21, and the wire cutter 22 is connected to a drive cylinder 8. The wire wrapping mechanism also includes a vertically rotating frustum 23 arranged in the vertical direction. A wire clamp 24 is provided on the vertically rotating frustum 23. The clamp head of the wire clamp 24 is located outside the wire cutter 22. A horizontal fixing rod 25 is also provided on the clamp body of the wire clamp 24. A horizontal push bar 26 is also provided on the outside of the wire clamp 24. The horizontal push bar 26 is connected to a drive cylinder 8. The wire wrapping mechanism also includes a wire wrapping plate 27. The top of the wire wrapping plate 27 is located at the end point of the moving track of the wire conveying clamp 24. The bottom end of the wire wrapping plate 27 abuts against the lifting block. The lifting block is connected to a drive cylinder 8.
[0034] In this embodiment, after the upper lead wire action is completed, the gripper 2 drives the inner core to the flattened lead wire position. At this time, the lower end of the lead wire is close to the outer side of the fixing block 17, and the driving cylinder 8 pushes the flattening block 16 toward the fixing block 17 to strike the lower end of the lead wire, making it form a flat structure.
[0035] In this embodiment, after the tinning of the lead wire is completed, the gripper 2 continues to drive the inner core to the working area of the lead wire bending mechanism. When the gripper carries the inner core to the bending station, the flattened section of the lead wire is precisely inserted into the limiting groove of the mounting frame box and forms an alignment and fit with the bending head 19 at the bottom of the pressure block 18. Then, the drive cylinder built into the mounting frame box is activated, pushing the pressure block 18 to move downward in the vertical direction. The bending head 19 uses the arc surface as the bending trajectory and the root of the flattened section of the lead wire as the fulcrum to gradually bend the end of the lead wire into a hook shape.
[0036] In this embodiment, after the bending action of the lead wire is completed, the clamp 2 continues to drive the inner core to the working area of wrapping the fuse wire. In this embodiment, a gap is formed between the guide wheels 20 for the fuse wire to pass through. The fuse wire is transported to the guide tube 21 through the guide tube 21, and then sent out from the guide tube 21 to the clamp position of the fuse clamp 24 for clamping. Then, the fuse wire is cut into a predetermined length by controlling the horizontal movement of the wire cutter 22. Subsequently, the vertical rotating truncated cone 23 is rotated 180° backward to the upper part of the lead wire hook. Then, the horizontal push bar 26 pushes the horizontal fixing rod 25 to drive the fuse clamp 24 to move horizontally to the upper part of the lead wire hook, and the lead wire is placed in the lead wire hook. Finally, under the lifting action of the lifting block, the wrapping plate 27 is driven to rotate towards the hook. The upper end face of the wrapping plate 27 squeezes the hook, so that the hook at the lower end of the lead wire tightly wraps the fuse wire.
[0037] In one possible implementation, the tin-bearing tank 4 is connected to a lifting block, and the lifting block is connected to a drive cylinder 8.
[0038] In this embodiment, after the wire wrapping process is completed, the gripper 2 drives the inner core to move to the flux immersion station. At this time, the air pump slider 40 drives the flux spoon 39 to descend into the flux tank 38. After the flux spoon 39 is filled with flux, it is driven by the air pump slider 40 to rise to the lower end of the lead wire (i.e., the part where the lead wire is bent) so that the flux covers the lower end of the lead wire.
[0039] In this embodiment, after the flux coating is completed, the gripper 2 continues to move the inner core to the soldering station. At this time, the solder carrier tank 4 rises under the action of the drive cylinder 8, completely immersing the lower end of the inner core's lead wire into the molten solder, realizing the soldering operation and preparing for subsequent current soldering and high-frequency soldering.
[0040] In one possible implementation, the automatic fuse assembly device further includes a pull wire assembly disposed next to the high-frequency welding assembly, and a resistance checking assembly disposed next to the pull wire assembly. The cable pulling assembly includes a support frame, on which a cable clamp 28 capable of vertical reciprocating motion is slidably connected. The support frame is also provided with a top holding block 29 capable of vertical reciprocating motion. The top holding block 29 is located directly above the cable clamp 28, and the top end of the top holding block 29 is connected to the output end of the drive cylinder 8. The resistance testing assembly includes a testing bracket, on which a conductive testing clamp 41 is mounted, and a driving cylinder 8 is connected to the clamp body of the conductive testing clamp 41.
[0041] In this embodiment, after the high-frequency welding operation is completed, the gripper 2 transfers the inner core to the wire pulling assembly. At this time, the top holding block 29 moves downward under the drive of the drive cylinder 8, pressing and squeezing the wire pulling clamp 28. A spring connects the wire pulling clamp 28 and the support frame. The top end of the spring is connected to the wire pulling clamp 28, and its bottom end is connected to the support frame. When the top holding block 29 presses down, the wire pulling clamp 28 moves downward and opens after being pressed, so that the clamp head of the wire pulling clamp 28 is located in the middle part of the upper end of the lead wire. Then, the drive cylinder 8 drives the top holding block 29 to lift and reset. After that, the wire pulling clamp 28 closes and clamps the upper end of the lead wire. Then, under the action of the spring rebound force, the wire pulling clamp 28 pulls the lead wire to a predetermined height and then releases.
[0042] In this embodiment, after the wire pulling operation is completed, a wire pulling detection component is also provided next to the wire pulling component. The wire pulling detection component is as follows: Figure 12 As shown, it includes a CCD inspection camera 10. The lens of the CCD inspection camera 10 is equipped with an aperture. When the gripper 2 moves the inner core to the wire pulling inspection station, the lens of the CCD inspection camera 10 is located directly below the inner core. At this time, the CCD inspection camera 10 takes pictures of the state after the inner core wire is pulled up and feeds the picture back to the background control system. The background control system identifies whether the wire in the picture is damaged.
[0043] In this embodiment, after the wire pulling test is completed, the gripper 2 transfers the inner core to the resistance testing component. The conductive detection clamp 41 closes under the action of the driving cylinder, clamping the upper end of the lead wire. Through the circuit connection inside the conductive detection clamp 41, the resistance value of the inner core is detected in real time to see if it meets the set range, and the detection signal is sent to the background control system.
[0044] In this embodiment, after the resistance test is completed, a fixed column is set next to the resistance test component. A vertically moving defective product pusher is set on the fixed column. The defective product pusher is connected to a driving device. When the background control system determines that the inner core is defective (i.e., the pull wire is broken or the resistance value exceeds the standard), the background control system controls the defective product pusher to push the defective product out of the fixed column.
[0045] In one possible implementation, the shell conveying and mounting assembly includes a shell vibratory feeder 30 and a feeding guide rail 13. The discharge end of the shell vibratory feeder 30 is connected to the feeding guide rail 13. A through hole is provided on the discharge port of the feeding guide rail 13. A shell-retrieving turntable 31 is also provided above the discharge port of the feeding guide rail 13. A shell-retrieving port is provided on the shell-retrieving turntable 31 facing the through hole. A vertically reciprocating shell-pushing rod 32 is provided below the discharge port of the feeding guide rail 13. A driving cylinder 8 is connected to the bottom end of the shell-pushing rod. The top end of the shell-pushing rod 32 extends directly below the through hole of the feeding guide rail 13. A heating tube is provided directly above the shell-retrieving port. The heating tube is connected to a silicone storage tank 33 containing silicone. The outer shell conveying and installation assembly also includes a top shell rod 34 that moves vertically reciprocating. The top end of the top shell rod 34 is located below the bottom of the shell taking port, and the bottom end of the top shell rod 34 is connected to a drive cylinder 8. A mounting frame is provided on the side of the shell-retrieving turntable 31. A fixed platform 42 is provided on the mounting frame, and a vertically reciprocating mounting block 35 is also provided on the mounting frame. A drive cylinder 8 is connected to the top of the mounting block 35, and its bottom end faces the top surface of the fixed platform 42. The finished product collection assembly includes a fixed slide, on which a slider is slidably connected. A picking needle 36 is connected to the bottom of the slider, and the top of the slider is connected to the output end of the drive cylinder 8. The picking needle 36 is located directly above the gripper 2.
[0046] In this embodiment, when the outer shell moves to the discharge port of the feeding guide rail 13, and the shell-retrieving turntable 31 also moves to a position where its shell-retrieving port is directly above the discharge port through hole, the shell-pushing rod 32 moves upward through the through hole under the action of the driving cylinder 8, lifting the outer shell into the shell-retrieving port. Then, the shell-retrieving turntable 31 drives the outer shell to move directly below the heating tube. At this time, the background control system controls the heating tube to heat the silicone in the silicone storage tank 33 to a molten state and flow into the outer shell in the shell-retrieving port, completing the silicone filling.
[0047] In this embodiment, after the silicone filling operation is completed, the shell removal turntable 31 continues to rotate, aligning the silicone-filled shell directly below the good inner core that has completed the resistance test. At this time, the drive cylinder 8 drives the top shell rod 34 to move upward, precisely lifting the shell to initially connect with the inner core. When the inner core and shell are initially installed, due to the offset error of the lifting trajectory of the top shell rod 34, or the manufacturing error of the shell and the inner core, the connection between the shell and the inner core is not completely fitted. Subsequently, the gripper 2 moves the initially installed inner core and shell to one side of the mounting frame, so that the bottom surface of the shell abuts against or approaches the top surface of the fixed platform 42. At this time, the drive cylinder 8 drives the mounting block 35 to move downward, so that the bottom surface of the mounting block 35 presses against the top of the shell, thereby correcting the installation deviation between the shell and the inner core and ensuring that the two are completely fitted.
[0048] After the calibration operation is completed, the gripper 2 transfers the assembled product to one side of the fixed carriage, and the drive cylinder 8 drives the picking needle 36 to move down, so that it holds and squeezes the product that has completed the calibration operation, and pushes the product out of the gripper 2 and into the finished product collection bucket 43.
[0049] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An automatic fuse assembly device, characterized in that, include: A rotating disk used to drive the fuse body to rotate to each process has grippers arranged at intervals along the circumference of the rotating disk, and an inner core feeding assembly, a vertically reciprocating wire needle tube, a wire feeding and wrapping assembly, a vertically reciprocating tin carrying tank, a current welding assembly, a high-frequency welding assembly, a shell conveying and installation assembly, and a finished product collection assembly arranged at intervals along the outer side of the rotating disk. When the gripper moves to the position to grip the inner core, the inner core feeding assembly horizontally conveys the inner core into the gripper; When the gripper moves to the wire insertion position, the wire needle tube moves vertically to deliver the wire to the inner core. Above the wire needle tube, there is also a horizontally reciprocating wire cutter. The wire cutter moves horizontally to cut the wire at the end of the wire needle tube. When the gripper moves to the tin-immersion position, the tin-carrying tank moves vertically to submerge the lower part of the lead wire in molten tin. When the gripper moves to the fuse assembly position, the wire feeding and wrapping assembly is used to place and fix the fuse at the lower end of the lead wire; The current welding assembly includes a horizontally reciprocating welding block. When the gripper moves to the current welding position, the welding block moves horizontally to the connection point between the welding wire and the lead wire. The high-frequency welding assembly includes an electromagnetic induction coil, which is connected to a vertical push rod capable of vertical reciprocating motion. When the gripper moves to the high-frequency welding position, the vertical push rod moves vertically to completely enclose the connection between the molten wire and the lead wire inside the electromagnetic induction coil. When the gripper moves to the housing mounting position, the housing conveying and mounting assembly accurately fits and fixes the housing onto the inner core; When the gripper moves to the finished product detection position, the finished product collection component is used to remove the assembled fuse.
2. The automatic fuse assembly device according to claim 1, characterized in that, The current welding assembly also includes a support platform and a drive cylinder. The support platform is provided with two horizontal slide rails, and each horizontal slide rail is provided with two corresponding sliders. The welding block is disposed on the slider, and the welding head of the welding block faces the outer side of the other slider on the same slide rail. The drive cylinder is connected to each slider in a drive connection.
3. The automatic fuse assembly device according to claim 2, characterized in that, The high-frequency welding assembly also includes a fixed platform with a vertical channel. The vertical push rod is embedded in the vertical channel and slidably connected to the vertical channel. The lower end of the vertical push rod is connected to a drive cylinder, and its upper end protrudes from the vertical channel and is connected to a frequency converter cabinet. The electromagnetic induction coil is horizontally arranged and electrically connected to the frequency converter cabinet.
4. The automatic fuse assembly device according to claim 3, characterized in that, The automatic fuse assembly device also includes a welding inspection component, which is located next to the high-frequency welding component. The welding inspection assembly includes a CCD inspection camera and a light-emitting plate, which are spaced apart. The light-emitting surface of the light-emitting plate faces the lens of the CCD inspection camera, and the lens of the CCD inspection camera is opposite to the welding position of the fuse and the lead wire.
5. The automatic fuse assembly device according to claim 1, characterized in that, The inner core feeding assembly includes an inner core vibrating plate and a feeding guide rail. The discharge end of the inner core vibrating plate is connected to the feeding guide rail. The discharge end of the feeding guide rail is provided with a horizontal pushing block, and the horizontal pushing block is also connected to a driving cylinder. A carrying frame is also provided on the side of the horizontal pusher block. A drive cylinder is provided on the upper end of the carrying frame, and a pressing block is connected to the drive end of the drive cylinder.
6. The automatic fuse assembly device according to claim 1, characterized in that, The wire feeding and wrapping assembly includes a lead wire flattening mechanism, a lead wire bending mechanism disposed next to the lead wire flattening mechanism, and a wrapping mechanism disposed next to the lead wire bending mechanism.
7. The automatic fuse assembly device according to claim 6, characterized in that, The lead flattening mechanism includes a fixed frame and a flattening block. The fixed frame is provided with a fixed block facing the flattening block. The flattening block is slidably connected to the fixed frame by a drive cylinder. The lead wire bending mechanism includes a mounting frame box, a pressure block is movably connected to the mounting frame box, a bending head is provided on the pressure block, and the pressure block is connected to a drive cylinder embedded in the mounting frame box. The wire wrapping mechanism includes a wire guide wheel, the output end of which is provided with a wire guide tube, and the opening of the wire guide tube is provided with a horizontally reciprocating wire cutter, which is connected to a drive cylinder. The wire wrapping mechanism also includes a vertically rotating truncated platform arranged in the vertical direction. A wire clamp is provided on the vertically rotating truncated platform. The clamp head of the wire clamp is located outside the wire cutter. A horizontal fixing rod is also provided on the clamp body of the wire clamp. A horizontal push bar is also provided on the outside of the wire clamp. The horizontal push bar is connected to a drive cylinder. The wire wrapping mechanism also includes a wire wrapping plate. The top of the wire wrapping plate is located at the end point of the moving rail that transports the fuse in the fuse clamp. The bottom of the wire wrapping plate abuts against the lifting block, and the lifting block is connected to a drive cylinder.
8. The automatic fuse assembly device according to claim 1, characterized in that, The tin support tank is connected to the lifting block, and the lifting block is connected to a drive cylinder.
9. The automatic fuse assembly device according to claim 1, characterized in that, The automatic fuse assembly device also includes a wire pull assembly disposed next to the high-frequency welding assembly, and a resistance checking assembly disposed next to the wire pull assembly. The cable pulling assembly includes a support frame, on which a cable clamp capable of vertical reciprocating motion is slidably connected. The support frame is also provided with a top holding block capable of vertical reciprocating motion, which is located directly above the cable clamp. The top of the top holding block is connected to the output end of the drive cylinder. The resistance testing assembly includes a testing bracket, on which a conductive testing clamp is mounted, and a driving cylinder is connected to the clamp body of the conductive testing clamp.
10. The automatic fuse assembly device according to claim 1, characterized in that, The outer shell conveying and installation assembly includes an outer shell vibratory plate and a feeding guide rail. The discharge end of the outer shell vibratory plate is connected to the feeding guide rail. A through hole is opened on the discharge port of the feeding guide rail. A shell-retrieving turntable is also provided above the discharge port of the feeding guide rail. A shell-retrieving port is opened on the shell-retrieving turntable, which is directly opposite the through hole. A vertically reciprocating shell-pushing rod is provided below the discharge port of the feeding guide rail. A driving cylinder is connected to the bottom end of the shell-pushing rod. The top end of the shell-pushing rod extends directly below the through hole of the feeding guide rail. A heating tube is provided directly above the shell-retrieving port. The heating tube is connected to a silicone storage tank containing silicone. The outer shell conveying and installation assembly also includes a top shell rod that moves vertically reciprocating. The top end of the top shell rod is located below the bottom of the shell taking port, and the bottom end of the top shell rod is connected to a drive cylinder. A mounting frame is provided on the side of the shell-retrieving turntable. A fixed platform is provided on the mounting frame, and a vertically reciprocating mounting block is also provided on the mounting frame. A drive cylinder is connected to the top of the mounting block, and its bottom end faces the top surface of the fixed platform. The finished product collection assembly includes a fixed slide, on which a slider is slidably connected. A picking needle is connected to the bottom of the slider, and the top of the slider is connected to the output end of a drive cylinder. The picking needle is located directly above the gripper.