Automatic feeding device for diodes

Abstract

The utility model belongs to the technical field of feeding device, disclose a kind of automatic feeding device suitable for diode, applied to automobile ignition coil assembly scene, including feeding mechanism, the feeding mechanism includes feeding rack, drive assembly, multiple jaw feeding assembly, online on-off detection component, automatic cutting assembly and control unit, diode is the core protection and functional auxiliary element of automobile ignition coil, existing feeding device exists single jaw clamping and causes terminal deformation, no online detection causes finished product scrapping, process linkage difference causes assembly deviation and other problems, the device adopts multiple jaw upper and lower pressure feeding design, integrates online on-off detection component, collocates integrated operation process, effectively avoids terminal pulling damage, removes defective product in advance, substantially improves feeding stability and assembly precision, reduces production cost, significantly improves production line yield and operation efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of feeding devices, specifically relating to an automatic feeding device suitable for diodes. Background Technology

[0002] In automotive ignition systems, the ignition coil is one of the core components, while the diode, as a key protective and functional auxiliary component within the ignition coil, plays a crucial role in suppressing reverse voltage, protecting electronic components, optimizing ignition performance and ignition energy release efficiency, and directly determining the stability and reliability of engine ignition under various operating conditions. It is an indispensable core component in automotive ignition coil assembly.

[0003] As the automotive manufacturing industry moves towards automation and high precision, the assembly efficiency and product yield of ignition coils have become key industry concerns. Among these, the automated diode feeding process is a critical bottleneck affecting the overall assembly performance. Current automated diode feeding devices face several unresolved issues in practical applications: On the one hand, the driving method and clamping structure design of traditional diode feeding mechanisms are unreasonable. They often use motor drive combined with a single or a few clamps to hold the diode terminals for feeding. Due to the large overall weight of the diode strip, the resistance during feeding is significant. The design of a single or a few clamps will cause the feeding force to be concentrated on a single or a few diode terminals, which can easily cause the terminals to be pulled and deformed, thus affecting the subsequent assembly accuracy and the functional stability of the diode itself. At the same time, the feeding mechanism lacks online detection function and cannot identify defective diodes during feeding. It can only be inspected after the entire ignition coil assembly is completed. Once a defective diode is found, the entire product will be scrapped, resulting in serious material waste and increased production costs.

[0004] On the other hand, the existing diode feeding process suffers from poor integration with subsequent processes. Diodes undergo multiple steps in ignition coil assembly, including tape supply, feeding, cutting, handling, and terminal bending and shaping. However, in existing technologies, the mechanisms corresponding to these steps are mostly independently designed, lacking coordinated integration. For example, insufficient alignment between the tape supply mechanism and the feeding mechanism can easily lead to tape conveying jams; improper connection between the cutting mechanism and the handling mechanism results in inaccurate clamping and positioning of the diode after cutting, causing positional and orientation deviations; and the lack of continuity in the coordination between the handling mechanism and the shaping mechanism makes it easy for the diode to become disoriented during transport, leading to subsequent assembly defects. Furthermore, these problems are difficult to troubleshoot and severely impact production line yield and efficiency.

[0005] Furthermore, the existing feeding devices suffer from inadequate supporting structures (such as waste film recycling in the material strip supply and terminal bending precision control in the shaping mechanism), further exacerbating the problems of poor feeding stability and insufficient assembly accuracy. This makes it difficult to meet the high-precision, high-stability, and cost-effectiveness production requirements of the modern automotive manufacturing industry for ignition coil assembly. Therefore, developing a diode automatic feeding device with a reasonable structure, stable feeding, timely detection, and smooth integration with subsequent processes has become an urgent technical problem to be solved in this field. Utility Model Content

[0006] In view of the problems mentioned above in the background art, the purpose of this utility model is to provide an automatic feeding device suitable for diodes.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: An automatic feeding device for diodes, applied in automotive ignition coil assembly scenarios, includes a feeding mechanism; The feeding mechanism includes a feeding frame, a drive assembly, a multi-claw feeding assembly, an online on / off detection assembly, an automatic cutting assembly, and a control unit; The drive assembly is fixedly mounted on the top of the feeder frame, and the power output end of the drive assembly is detachably connected to the multi-jaw feeding assembly. The drive assembly drives the multi-jaw feeding assembly to reciprocate along the length of the feeder frame. The online continuity detection component is mounted on the feeder frame via a bracket. The online continuity detection component is located directly above the feeding path of the multi-claw feeder component. The online continuity detection component includes a probe group for contacting diode terminals and is electrically connected to the control unit via wires. The automatic cutting assembly is fixed to the discharge end side wall of the feeder frame and is used to cut diode segments on the material belt; the clamping end of the multi-claw feeding assembly faces the material belt input direction, its feeding path is aligned with the output end of the external material belt supply structure, and the cutting head of the automatic cutting assembly is aligned with the clamping component of the external conveying structure.

[0008] Further defined, it also includes a diode roll feeding mechanism as an external material strip supply structure; the diode roll feeding mechanism includes a material tray support frame, a feeding motor, a waste film winding roller, and a balance detection sensor; the feeding motor and the waste film winding roller are installed side by side on one side of the material tray support frame, and the output shaft of the feeding motor is connected to the material tray rotating shaft on the material tray support frame; the balance detection sensor is installed on the feeding end side of the feeding machine frame and is electrically connected to the control unit; the material strip output end of the diode roll feeding mechanism is aligned with the feeding path of the multi-claw feeding assembly through guide wheels, so as to realize automatic diode feeding and simultaneous winding of product surface coating.

[0009] Further defined, it also includes a diode transport mechanism as an external transport structure; the diode transport mechanism includes a transport robotic arm and a clamping assembly; the fixed end of the transport robotic arm is installed on the ground next to the feeding frame, the clamping assembly is fixedly installed on the free end of the transport robotic arm, and the clamping port of the clamping assembly is aligned with the cutting head of the automatic cutting assembly; the moving trajectory of the transport robotic arm covers the discharge end of the feeding frame, and is used to transport the cut diode held by the clamping assembly to the external shaping structure, thereby realizing the automatic transfer of the diode.

[0010] Further, it also includes a diode shaping mechanism as an external shaping structure; the diode shaping mechanism includes a mounting frame and an electric turntable, the electric turntable symmetrically mounting two lower shaping fixtures, the mounting frame mounting a shaping cylinder, the output end of the shaping cylinder being connected to an upper shaping fixture, the upper shaping fixture and the lower shaping fixture being positioned correspondingly, the diode being automatically placed on the lower shaping fixture, and after being fully shaped with the upper shaping fixture, under the effect of the turntable, the lower shaping fixture is moved to the bottom of the product and automatically assembled into the product, completing the entire diode process.

[0011] Furthermore, the online continuity detection component also includes an insulating shell, the probe group is disposed through the insulating shell, and the probe tip at the lower end of the probe group is plated with a gold plating layer to ensure detection effect.

[0012] The beneficial effects of using this utility model are as follows: This invention utilizes a multi-claw feeding assembly combined with a cylinder-cam drive assembly to distribute the feeding force across multiple diodes, effectively avoiding the terminal pulling and deformation problems caused by traditional single-claw feeding and ensuring the structural and functional integrity of the diodes. Simultaneously, the multi-claw design works in conjunction with the limiting structure of the feeding frame, and the precise alignment of the roll loading mechanism and the feeding mechanism significantly improves the continuity and stability of the conveyor belt, solving the problems of jamming and misalignment in traditional feeding devices.

[0013] The online continuity detection component integrated into the feeding mechanism of this utility model detects the continuity status of diode terminals in real time through a probe group and links with the control unit to achieve accurate online screening of defective products. This avoids the scrapping of finished products caused by the need for the entire machine to be assembled before testing in traditional devices, and greatly reduces material waste. At the same time, the early removal of defective products also reduces the ineffective processing costs of subsequent processes and improves the input-output ratio of the production line.

[0014] This invention achieves a continuous operation of "material strip supply - feeding detection - cutting and clamping - handling and shaping" through the coordinated design of diode roll feeding mechanism, handling mechanism, shaping mechanism and core feeding mechanism. Among them, the alignment design of automatic cutting component and handling mechanism clamping component ensures that the position and posture of diode remain unchanged after cutting; the precise docking of handling robotic arm and shaping fixture, and the sliding cooperation between shaping fixture and transfer guide rail avoid the problems of diode offset and posture disorder caused by improper connection of traditional independent mechanisms, significantly improve assembly accuracy and production line yield, and reduce the difficulty of troubleshooting. Attached Figure Description

[0015] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the production line structure of an embodiment of an automatic feeding device for diodes according to this utility model; Figure 2 This is a schematic diagram of the feeding mechanism structure of an embodiment of an automatic feeding device for diodes according to this utility model; Figure 3 This is a schematic diagram of the internal structure of the feeding mechanism in an embodiment of an automatic feeding device for diodes according to this utility model. Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure; The symbols for the main components are explained below: Feeding mechanism 1; Diode roll loading mechanism 2; Diode handling mechanism 3; Diode shaping mechanism 4; 11. Feeder frame; 12. Drive assembly; 13. Multi-claw feeding assembly; 14. Online on / off detection assembly; 15. Automatic cutting assembly; 21. Material tray support frame; 22. Material feeding motor; 23. Waste film take-up roller; 24. Balance detection sensor; Handling robotic arm 31; clamping assembly 32; Mounting bracket 41; electric turntable 42; lower shaping fixture 43; shaping cylinder 44; upper shaping fixture 45; Probe assembly 141; insulating housing 142. Detailed Implementation

[0016] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figures 1-4 As shown, this utility model provides an automatic feeding device for diodes, applied to automotive ignition coil assembly scenarios, including a feeding mechanism 1; The feeding mechanism 1 includes a feeding frame 11, a drive assembly 12, a multi-claw feeding assembly 13, an online on / off detection assembly 14, an automatic cutting assembly 15, and a control unit; The drive assembly 12 is fixedly mounted on the top of the feeder frame 11. The power output end of the drive assembly 12 is detachably connected to the multi-claw feeder assembly 13. The drive assembly 12 drives the multi-claw feeder assembly 13 to reciprocate along the length of the feeder frame 11. The online continuity detection component 14 is mounted on the feeder frame 11 by a bracket. The online continuity detection component 14 is located directly above the feeding path of the multi-claw feeder component 13. The online continuity detection component 14 includes a probe group 141 for contacting diode terminals and is electrically connected to the control unit by a wire. The automatic cutting assembly 15 is fixed to the discharge end side wall of the feeder frame 11 and is used to cut the diode segments on the material belt; the clamping end of the multi-claw feeding assembly 13 faces the material belt input direction, its feeding path is aligned with the output end of the external material belt supply structure, and the cutting head of the automatic cutting assembly 15 is aligned with the clamping component of the external conveying structure.

[0018] In this embodiment, the feeding frame 11 is formed by splicing profiles, and two parallel linear guide rails 111 are installed on the top along the length direction, serving as the core mounting carrier to provide stable support for each functional component. The drive assembly 12 includes, but is not limited to, a drive assembly consisting of a cylinder and a cam. The drive assembly 12 is fixed to the preset mounting surface on the top of the feeding frame 11 by bolts. The feeding frame 11 is reinforced with welding and bolts to form a stable frame structure. A T-slot guide rail mounting position is reserved along the length of the top, providing a precise and secure mounting reference for each functional component. The drive assembly 12 includes, but is not limited to, a cylinder and cam composite drive structure, specifically including a drive cylinder of model SC63×200, a cam with an eccentricity of 10mm, a high-strength alloy steel transmission rod, and a moving plate slidably mounted on a linear guide rail. The drive assembly 12 is fixed to the preset mounting surface on the top of the feeding frame 11 with M8 hexagonal bolts. The lower end of the transmission rod is hinged to the moving plate via a pin. The multi-claw feeding assembly 13 is detachably connected to the mounting holes below the moving plate via four sets of M6 bolts. Spring washers are added at the connection points to prevent vibration and loosening, facilitating subsequent maintenance and component replacement. The bracket of the online continuity detection assembly 14 is a threaded lifting adjustment structure, including a support column vertically fixed to the side of the feeding frame 11. The lifting slide sleeve and locking handle are sleeved on the column. The horizontal mounting plate is fixed to one side of the lifting slide sleeve by bolts. The probe group 141 is vertically installed below the horizontal mounting plate through the insulating seat. After precise calibration, the probe group 141 is positioned directly above the feeding path of the multi-claw feeding assembly 13. The lower end of the probe corresponds one-to-one with the terminal position of the diode on the material strip. The probe group 141 is electrically connected to the control unit through shielded twisted pair cable. The shielding layer is grounded to ensure that the detection signal is not subject to electromagnetic interference. The automatic cutting assembly 15 is fixed to the side wall of the discharge end of the feeding frame 11. Its cutting head is made of high-speed steel. The cutting edge direction is perpendicular to the material strip conveying direction. The lifting trajectory of the cutting head and the feeding endpoint of the multi-claw feeding assembly 13 are controlled within ±0.1mm. At the same time, it is coaxially aligned with the clamping parts of the external handling structure. The mounting base and the moving plate of the drive assembly are fixed by bolts. Each clamping claw corresponds to a diode on the material strip.

[0019] During operation, the control unit sends a pulse signal to drive the drive cylinder of the drive assembly 12. The piston rod of the drive cylinder extends and pushes the cam to rotate around the hinge point. The cam drives the moving plate to make uniform reciprocating linear motion along the linear guide rail of the feeder frame 11 through the transmission rod. In the initial state, the bottom feeding jaw group of the multi-jaw feeding assembly 13 is in a low position. After the material belt is conveyed between the upper and lower jaws, the control unit commands the lifting cylinder to ventilate and drive the bottom feeding jaw group to rise, forming a pressure clamp with the upper pressing jaw group. Multiple sets of upper and lower jaws simultaneously clamp multiple diodes on the material belt to achieve uniform force distribution. Subsequently, the moving plate drives the multi-jaw feeding assembly 13 to gradually convey the diodes to the discharge end. During the conveying process, the upper and lower jaws always maintain a clamping state to prevent the material belt from being damaged. If the diode is moved below the online continuity detection component 14, the control unit issues a command to cause the lifting sleeve to drive the probe group 141 to descend. The lower end of the probe elastically contacts the terminals on both sides of the diode. The continuity status is judged by the circuit formed by the 5V DC power supply in the detection circuit. The detection data is fed back to the control unit in real time. If it is a defective product, the control unit will trigger the subsequent rejection mechanism. When a qualified diode is delivered to the end of the feeding process, the clamping component of the external handling structure accurately clamps the diode. The cutting head drive cylinder of the automatic cutting component 15 extends quickly, driving the cutting head to rise and cut the diode segment on the material strip. After the cutting is completed, the lifting cylinder of the multi-claw feeding component 13 exhausts the air, and the bottom feeding claw group descends and resets, ready for the next clamping and conveying.

[0020] The multi-jaw feeding assembly 13 uses multiple sets of upper and lower opposing jaws to synchronously clamp the material strip, evenly distributing the feeding resistance to the terminals of multiple diodes. This reduces the force on each terminal compared to traditional single-jaw feeding, completely solving the terminal pulling and deformation problem caused by traditional single-jaw feeding. The terminal deformation rate is reduced from over 15% to below 0.5%, ensuring the structural integrity and functional stability of the diodes. The opposing design of the upper and lower jaws, combined with nitrile rubber pads, improves clamping stability and avoids damage to the terminals from hard contact. The slippage rate during material strip conveying is ≤0.1%. The online continuity detection assembly 14 realizes diode... The 100% real-time detection during the feeding process, compared to the traditional method of inspection after assembly, can eliminate defective products in advance, avoiding unnecessary processing steps such as welding and assembly. On average, a single production line reduces material waste by about 300 pieces per day and lowers production costs by 15%-20%. The components work together through mechanical positioning and electrical linkage. The drive component 12 enables the multi-claw feeding component 13 to achieve a feeding repeatability accuracy of ±0.05mm. The automatic cutting component 15 is precisely aligned with the external handling structure, laying the foundation for subsequent process connections. Overall, the stability of the feeding process is improved, and the production line downtime rate is significantly reduced.

[0021] The device also includes a diode roll feeding mechanism 2 as an external material supply structure; the diode roll feeding mechanism 2 includes a material tray support frame 21, a feeding motor 22, a waste film winding roller 23 and a balance detection sensor 24; the feeding motor 22 and the waste film winding roller 23 are installed side by side on one side of the material tray support frame 21, and the output shaft of the feeding motor 22 is connected to the material tray rotating shaft on the material tray support frame 21; the balance detection sensor 24 is installed on the feeding end side of the feeder frame 11 and is electrically connected to the control unit, and the material output end of the diode roll feeding mechanism 2 is aligned with the feeding path of the multi-claw feeding assembly 13 through the guide wheel.

[0022] In this implementation, the diode roll feeding mechanism 2's tray support frame includes a horizontal beam, a vertical support beam, and symmetrically arranged tray shaft seats. Two sets of bearing mounting seats are pre-set on the horizontal beam. The feeding motor 22 and the waste film winding roller 23 are mounted side-by-side on these bearing mounting seats via deep groove ball bearings, ensuring smooth and unobstructed rotation. The feeding motor 22 is a stepper motor equipped with a microstepping driver. Its output shaft is coaxially driven with the tray shaft on the tray support frame 21 via a flexible coupling, ensuring uniform and stable conveying speed of the material belt. The waste film winding roller 23 includes, but is not limited to, a seamless steel pipe roller body, a steel roller shaft, and an anti-slip rubber sleeve. Both ends of the roller shaft are mounted on the horizontal beam via bearing seats. The anti-slip rubber sleeve is used to enhance friction with the film coating and prevent slippage during winding. The remaining material detection sensor 2... 4. Specifically, it is a diffuse reflection infrared beam sensor with adjustable detection distance. It includes a sensor body, an L-shaped aluminum alloy adjustment bracket, and a polycarbonate detection probe. The L-shaped adjustment bracket is fixed to the side of the feed end of the feeder frame 11. The sensor body is slidably mounted in the elongated hole of the adjustment bracket. The detection probe faces the conveying path of the material belt. The signal output end is electrically connected to the control unit through a shielded wire. Two sets of guide wheels are provided at the output end of the material belt of the diode roll feeding mechanism 2. The guide wheels include a stainless steel fixed shaft, a nylon roller, and a rolling bearing. The fixed shaft is vertically fixed to the discharge side of the tray support frame 21. The roller is sleeved on the fixed shaft through the rolling bearing. The groove width of the roller is adapted to the thickness of the material belt. After the material belt is guided by the guide wheels, it is precisely aligned with the upper and lower jaws of the multi-jaw feeding assembly 13. Furthermore, in addition to the basic material supply and film recycling functions, a tensioning wheel can be added to one side of the synchronous belt. This wheel is mounted on a horizontal beam via an adjustable bracket with elongated holes. Adjusting the position of the tensioning wheel ensures the tension of the synchronous belt, preventing excessive transmission deviations caused by belt slack after prolonged use. A millimeter-level scale can be added to the L-shaped adjustment bracket of the excess material detection sensor 24, facilitating precise adjustment of the probe's height and horizontal position to accommodate detection needs for material belts of varying thicknesses. A dust cover made of transparent acrylic can also be added to the sensor body, ensuring accuracy without affecting detection and preventing dust from adhering to the probe and affecting detection performance. Side guards can be installed at both ends of the waste film winding roller 23, welded to the roller body to prevent deviation and detachment during film winding, thus controlling the deviation amount. This mechanism replaces direct hard connection with synchronous belt drive, reducing vibration transmission during the operation of the feeding motor 22, lowering vibration amplitude, ensuring uniform and stable conveying speed of the material belt, and avoiding tearing damage caused by speed fluctuations. The infrared through-beam residual detection sensor 24 has a fast response speed and can accurately monitor the residual material belt in real time. When the residual material is too low, it automatically sends a signal to the control unit, which drives the feeding motor 22 to start replenishing material. After replenishment is completed, the machine stops, forming a closed-loop control. This completely solves the problem of production line interruption caused by untimely manual replenishment. The rolling bearing design of the guide wheel reduces the friction during material belt conveying. Combined with the precise fit between the wheel groove and the material belt, it ensures the straightness of the material belt conveying and provides a guarantee for the stable clamping of the multi-claw feeding assembly 13. The design of anti-slip rubber sleeve and edge guard improves the success rate of film coating and winding, and avoids film accumulation or detachment. The whole system realizes integrated automated operation of material belt supply, residual monitoring, and film recycling. It can reduce manpower on a single production line and improve the efficiency and stability of production line operation.

[0023] The device also includes a diode transport mechanism 3 as an external transport structure; the diode transport mechanism 3 includes a transport robotic arm 31 and a clamping assembly 32; the fixed end of the transport robotic arm 31 is installed on the ground next to the feeder frame 11, the clamping assembly 32 is fixedly installed on the free end of the transport robotic arm 31, and the clamping port of the clamping assembly 32 is aligned with the cutting head of the automatic cutting assembly 15; the moving trajectory of the transport robotic arm 31 covers the discharge end of the feeder frame 11, and is used to transport the cut diode clamped by the clamping assembly 32 to the external shaping structure.

[0024] In this embodiment, the handling robot arm 31 of the diode handling mechanism 3 adopts a four-axis servo robot arm, including a cast iron fixed base, a horizontal rotary joint, a first telescopic arm, a second telescopic arm, and an aluminum alloy end mounting flange. The fixed base is fastened to the pre-set concrete foundation on the ground next to the feeding frame 11 by expansion bolts to ensure that the robot arm does not shake during operation. The horizontal rotary joint has a built-in first servo motor to drive the first telescopic arm to rotate horizontally around the fixed base. The first telescopic arm and the second telescopic arm are connected by a ball screw sliding pair. The second servo motor and the ball screw are built-in to drive the second telescopic arm to extend and retract axially. The end mounting flange is fixed to the free end of the second telescopic arm. The clamping component 32 includes, but is not limited to, the use of pneumatic parallel grippers. After laser calibration, the clamping port and the cutting head of the automatic cutting component 15 are in the same vertical plane. The movement trajectory of the handling robot arm 31 is preset by the PLC program. The coverage area completely includes the discharge end of the feeding frame 11 and the feed end of the external shaping structure. During the movement, the servo motor and the ball screw cooperate. Furthermore, in addition to the basic automatic transfer function, an angle adjustment module can be added to the end flange. The angle adjustment module has a built-in third servo motor that drives the clamping component 32 to rotate around the vertical axis, thereby achieving fine adjustment of the diode's posture and adapting to the feeding angle requirements of different shaping structures. A precision pressure regulating valve and a pressure sensor can be added to the air circuit of the gripper cylinder, which are electrically connected to the control unit to monitor the clamping force in real time. The clamping force is controlled within the required range by the pressure regulating valve to avoid excessive clamping that could deform the diode terminals or excessive clamping that could cause it to fall off during transfer. At the same time, a grating ruler can be added to the side of the moving path of the handling robot arm 31 to form a closed-loop control with the servo motor, further improving the moving positioning accuracy. Its four-axis servo robotic arm features a flexible motion trajectory, enabling precise and continuous "picking-transfer-discharging" actions. Compared to traditional linear module handling, it offers greater adaptability and can be flexibly adjusted to suit different production line layouts. Pneumatic parallel grippers, combined with flexible silicone rubber buffer pads, ensure gripping stability while effectively preventing scratches on the diode surface and damage to the terminals from hard contact, reducing the diode surface scratch rate and ensuring the diode's structural integrity. The precise alignment design of the clamping assembly 32 and the automatic cutting assembly 15 enables immediate clamping of the diode after cutting, completely eliminating positional shifts and posture disturbances caused by the diode detaching from the material strip after cutting. This provides a precisely positioned diode workpiece for subsequent shaping processes. The combined application of servo motors, ball screws, and grating rulers achieves high-precision repeatability of the handling robotic arm 31, ensuring that the diode can be smoothly and accurately transported to the preset station of the external shaping structure. This achieves seamless integration of the feeding and shaping processes, improving the overall operating efficiency and yield of a single production line. The device also includes a diode shaping mechanism 4 as an external shaping structure; the diode shaping mechanism 4 includes a mounting frame 41 and an electric turntable 42. The electric turntable 42 is symmetrically equipped with two lower shaping fixtures 43. The mounting frame 41 is equipped with a shaping cylinder 44. The output end of the shaping cylinder 44 is connected to an upper shaping fixture 45. The positions of the upper shaping fixture 45 and the lower shaping fixture 43 are corresponding.

[0025] In this embodiment, the mounting frame 41 of the diode shaping mechanism 4 is fixed to a pre-set concrete foundation on the ground. The electric turntable 42 is a servo electric indexing plate equipped with an absolute encoder. It is fixed to the deep groove ball bearing seat in the middle of the mounting frame 41 via a flange, ensuring smooth rotation without jamming. Two shaping lower fixtures 43 are symmetrically mounted on the upper surface of the electric turntable 42. The top of each fixture has a positioning groove that perfectly fits the shape of the diode to prevent scratches on the diode surface. The shaping upper fixture 44 is connected to the top crossbeam of the mounting frame 41 via a shaping cylinder 44. The shaping cylinder 44 is equipped with a magnetic switch to provide stroke feedback. The lower surface of the shaping upper fixture 44 has an arc-shaped pressing groove that matches the diode terminals. Wear-resistant silicone pads are also pasted on the wall, and they correspond one-to-one with the vertical positions of the two shaping lower fixtures 43. During operation, the handling robot arm 31 first accurately places the cut diode into the positioning groove of one of the shaping lower fixtures 43. The electric turntable 42 rotates 90° to transfer the fixture to the shaping station. The shaping cylinder 44 drives the shaping upper fixture 45 to descend and apply pressure to complete the terminal bending and shaping. After the shaping is completed, the upper fixture rises back, the electric turntable 42 rotates again, and the diode is lifted by the ejection cylinder built into the lower fixture and accurately embedded into the product's preset mounting hole to complete automatic assembly. At the same time, another empty fixture is synchronously transferred to the feeding position to receive the next diode, realizing continuous cycle operation. Furthermore, in terms of basic functions, the shaping fixture 43 can be designed as a modular structure. By replacing the lining of the positioning slot with different specifications, it can be adapted to various diode models, greatly improving the versatility of the mechanism. At the same time, a transparent acrylic protective cover is added around the mounting frame 41. The protective cover is equipped with an infrared sensor, which automatically stops the turntable operation when personnel approach, improving operational safety.

[0026] The two shaping fixtures 43 are symmetrically arranged and work alternately with the electric turntable 42 to realize the parallel operation of the "feeding-shaping-assembly" process. There is no need to wait for the single fixture to reset, the cycle of a single complete process is shortened, the operation efficiency is improved, and it is suitable for the high-speed production needs of the production line. The integrated shaping and assembly functions eliminate the secondary handling link after shaping in the traditional process, completely avoid the diode posture disorder caused by transportation, and realize the seamless connection between shaping and assembly processes.

[0027] The online continuity detection component 14 of this device also includes an insulating shell 142, a probe group 141 that passes through the insulating shell 142, and the probe tip at the lower end of the probe group 141 is plated with a gold plating layer.

[0028] In this embodiment, the insulating shell 142 of the online continuity detection component 14 is integrally molded from alumina ceramic material, possessing excellent high-temperature resistance and insulation performance. The shell has an overall rectangular structure with mounting holes adapted to the probe assembly 141 inside, extending vertically through the upper and lower shells. The probes of the probe assembly 141 are made of phosphor bronze, possessing good conductivity and elasticity. The upper end of the probe is fixed to the terminal block by welding. The terminal block is a gold-plated copper terminal, connected to the detection circuit of the control unit through a shielded wire. The insulating mounting base is sleeved in the middle of the probe base and embedded in the probe mounting hole, thus fixing the probe assembly 141 to the insulating shell 142. The gold plating layer 143 adopts a double-layer electroplating structure, which enhances the bonding force and corrosion resistance; the surface layer is a pure gold plating layer, ensuring good conductivity and wear resistance. The outer surface of the insulating shell 142 is sprayed with polyurethane antistatic coating, effectively eliminating electrostatic interference. Furthermore, based on the basic continuity detection function, probe groups 141 with different probe spacings can be designed according to the terminal spacing of diodes of different specifications. The probe groups are detachably connected to the horizontal mounting plate through an insulating base. By replacing the probe groups 141, the detection requirements of different diode models can be adapted, improving the versatility of the components. An elastic sealing gasket made of silicone material is added inside the probe mounting hole, which can not only fix the probe base and prevent radial shaking, but also play a buffering role to avoid poor contact caused by vibration during probe lifting and lowering. At the same time, the surface gold plating layer can be passivated to form a dense passivation film, enhancing its wear resistance and oxidation resistance. A waterproof and breathable valve is added to the top of the insulating shell 142 to prevent internal moisture from affecting the stability of the detection circuit and adapt to the humid production environment. The alumina ceramic insulating shell 142 possesses excellent high-temperature resistance, wear resistance, and insulation properties, effectively isolating the probe assembly 141 from external components. This prevents short circuits and leakage during testing, ensuring the stability of the detection circuit and the safety of operators. The one-piece molded structure ensures the structural strength of the shell, making it less prone to damage. The probe substrate is made of phosphor bronze, which has good elasticity, ensuring full contact between the probe and the diode terminal. This significantly reduces detection errors caused by poor contact, avoiding material waste or rejection of qualified products due to misjudgment. The anti-static coating effectively eliminates interference from static electricity on the detection signal, further improving detection accuracy. The overall structural design enables the online continuity detection component 14 to have stable and reliable detection performance, adapting to the needs of 24-hour continuous operation on the production line.

[0029] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An automatic feeding device for diodes, applied in automotive ignition coil assembly scenarios, characterized in that: Including the feeding mechanism (1); The feeding mechanism (1) includes a feeding frame (11), a drive assembly (12), a multi-claw feeding assembly (13), an online on / off detection assembly (14), an automatic cutting assembly (15), and a control unit; The drive assembly (12) is fixedly mounted on the top of the feeder frame (11). The power output end of the drive assembly (12) is detachably connected to the multi-claw feeder assembly (13). The drive assembly (12) drives the multi-claw feeder assembly (13) to reciprocate along the length of the feeder frame (11). The online continuity detection component (14) is mounted on the feeder frame (11) by a bracket. The online continuity detection component (14) is located directly above the feeding path of the multi-claw feeder component (13). The online continuity detection component (14) includes a probe group (141) for contacting diode terminals and is electrically connected to the control unit by a wire. The automatic cutting assembly (15) is fixed to the discharge end side wall of the feeder frame (11) and is used to cut the diode segments on the feeder belt; the clamping end of the multi-claw feeder assembly (13) faces the feeder belt input direction, its feed path is aligned with the output end of the external feeder belt supply structure, and the cutting head of the automatic cutting assembly (15) is aligned with the clamping component of the external conveying structure.

2. The automatic feeding device for diodes according to claim 1, characterized in that: It also includes a diode roll feeding mechanism (2) as an external material supply structure; the diode roll feeding mechanism (2) includes a material tray support frame (21), a feeding motor (22), a waste film winding roller (23) and a balance detection sensor (24); the feeding motor (22) and the waste film winding roller (23) are installed side by side on one side of the material tray support frame (21), and the output shaft of the feeding motor (22) is connected to the material tray rotating shaft on the material tray support frame (21); the balance detection sensor (24) is installed on the feeding end side of the feeder frame (11) and is electrically connected to the control unit, and the material output end of the diode roll feeding mechanism (2) is aligned with the feeding path of the multi-claw feeding assembly (13) through the guide wheel.

3. The automatic feeding device for diodes according to claim 1, characterized in that: It also includes a diode handling mechanism (3) as an external handling structure; the diode handling mechanism (3) includes a handling robotic arm (31) and a clamping assembly (32); the fixed end of the handling robotic arm (31) is installed on the ground next to the feeder frame (11), the clamping assembly (32) is fixedly installed on the free end of the handling robotic arm (31), and the clamping port of the clamping assembly (32) is aligned with the cutting head of the automatic cutting assembly (15); the moving trajectory of the handling robotic arm (31) covers the discharge end of the feeder frame (11).

4. An automatic feeding device for diodes according to claim 1, characterized in that: It also includes a diode shaping mechanism (4) as an external shaping structure; the diode shaping mechanism (4) includes a mounting frame (41) and an electric turntable (42), the electric turntable (42) is symmetrically equipped with two shaping lower fixtures (43), the mounting frame (41) is equipped with a shaping cylinder (44), the output end of the shaping cylinder (44) is connected to a shaping upper fixture (45), and the positions of the shaping upper fixture (45) and the shaping lower fixture (43) correspond.

5. An automatic feeding device for diodes according to claim 1, characterized in that: The online continuity detection assembly (14) also includes an insulating housing (142), through which the probe group (141) is disposed.

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