Intelligent detection jig for precision parts

Abstract

The application belongs to the field of rectifier bridge detection, and provides a precision part intelligent detection jig, which comprises a detection table, a mounting cover is installed at the bottom of the detection table, a rotating pipe is rotatably installed in the mounting cover, one end of the rotating pipe extending to the top of the detection table is fixedly connected with a station turntable, a plurality of stations are arranged on the station turntable, which are a detection station, a blanking station, a feeding station and a clamping station, and a positioning and clamping mechanism is installed on each station of the station turntable. The positioning and clamping mechanism is used for positioning and clamping the component, when the positioning and clamping mechanism drives the component to move below the detection assembly, the output end of the detection assembly can be accurately connected to each pin of the component, without repeated adjustment, the connection time is greatly saved, the detection efficiency is improved, only one worker is needed for each machine to be responsible for feeding and discharging, a large number of detection posts do not need to be set, and the labor cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of rectifier bridge testing, and particularly relates to an intelligent testing fixture for precision parts. Background Technology

[0002] A rectifier bridge is a power distribution module unit that converts alternating current (AC) into direct current (DC) output. The input and output of a rectifier bridge are electrically connected to external devices via pins. The rectifier diodes are encapsulated in a housing within the rectifier bridge.

[0003] During production, manufacturers test each rectifier bridge after it is packaged to ensure product quality.

[0004] In existing technologies, the testing of rectifier bridges is mostly done manually. Instruments such as multimeters are used, and simple hand clamps like alligator clips are manually connected to each rectifier bridge pin for testing. Because rectifier bridges are small, while alligator clips are relatively large, it's difficult to connect the clamps to the pins, leading to incorrect or missed clamps. This often requires repeated adjustments to the clamp positions, making the operation cumbersome and time-consuming, resulting in low testing efficiency. Furthermore, when testing a large number of rectifier bridges, the workload is substantial, and the failure rate is usually low. However, to ensure the quality of the rectifier bridges, each one still needs to be tested. Therefore, multiple testing positions are required, increasing labor costs. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent inspection fixture for precision parts, which aims to solve the technical problems of high labor costs and low inspection efficiency caused by manual inspection of rectifier bridges in the prior art.

[0006] This invention is implemented as follows: a precision parts intelligent inspection fixture includes an inspection table, a mounting cover installed at the bottom of the inspection table, a rotating tube rotatably installed inside the mounting cover, a station turntable fixedly connected to one end of the rotating tube extending to the top of the inspection table, and multiple evenly distributed positioning and clamping mechanisms installed on the station turntable. The positioning and clamping mechanisms are used to clamp components, each positioning and clamping mechanism is a station, and there are four positioning and clamping mechanisms in total, namely an inspection station, a loading station, a loading station, and a clamping station. A first servo motor is fixedly installed on the side of the mounting cover, and a transmission pair is connected between the output shaft of the first servo motor and the rotating tube.

[0007] The testing platform is also equipped with a testing component. The output end of the testing component is located above the testing station. The testing component is used to test the components on the positioning and clamping mechanism.

[0008] A fixing post is fixedly installed on the mounting cover. One end of the fixing post passes through the inside of the rotating tube and extends to the top of the workstation turntable. A fixing plate is fixedly installed on the top of the fixing post. A clamping power component and a release component are fixedly installed on the fixing plate. The positions of the clamping power component and the release component are adapted to the clamping station and the unloading station, respectively. The clamping power component is used to position and clamp the component by the positioning clamping mechanism, which facilitates the subsequent detection of the component by the detection component. The release component is used to release the clamping mechanism from the component, which facilitates the unloading of the component.

[0009] Further technical solution: The positioning and clamping mechanism includes a mounting platform fixedly installed on the workstation turntable. A feeding platform, a guide rail, and a limiting head are fixedly installed on the mounting platform in sequence. A clamping slider is slidably installed on the guide rail. The clamping slider is located between the feeding platform and the limiting head. A first compression spring is connected between the limiting head and the clamping slider. A positioning groove adapted to the component is opened on the side of the clamping slider near the feeding platform.

[0010] A release wedge is fixedly installed on the side of the clamping slider, and the release wedge has an inclined surface.

[0011] A limiting mechanism is installed between the mounting platform and the release wedge. When the clamping slider releases the components, the limiting mechanism is used to fix the release wedge and the clamping slider.

[0012] Further technical solution: The limiting mechanism includes a fixed cylinder fixedly installed on the mounting platform, a wedge block slidably installed inside the fixed cylinder, a second compression spring connected between the wedge block and the fixed cylinder, and a limiting triangular block adapted to the wedge block fixedly connected to the bottom of the releasing wedge block;

[0013] The wedge-shaped block is fixedly connected to a toothed block that cooperates with the clamping power assembly. The toothed block has an inclined surface at one end extending out of the fixed cylinder, and the side of the fixed cylinder has a sliding hole for the toothed block to move.

[0014] Further technical solution: The positioning and clamping mechanism further includes a buffer assembly, which includes a thickened copper tube, a third mounting bracket, and a permanent magnet. The thickened copper tube is fixedly mounted on the mounting platform, the third mounting bracket is fixedly mounted on the side of the clamping slider, and the permanent magnet is fixedly mounted on the end of the third mounting bracket. The axis of the permanent magnet coincides with the axis of the thickened copper tube.

[0015] A further technical solution: The clamping power assembly includes a third telescopic rod fixedly installed on a fixed plate, a fourth mounting frame fixedly installed on the movable end of the third telescopic rod, and a release roller that cooperates with the toothed block rotatably installed on the fourth mounting frame.

[0016] A further technical solution: The release assembly includes a fourth telescopic rod fixedly installed on a fixed plate, a fifth mounting bracket fixedly installed on the movable end of the fourth telescopic rod, and a guide wheel that cooperates with the release wedge is rotatably installed on the fifth mounting bracket.

[0017] Further technical solution: The detection component includes a fixed frame fixedly mounted on the detection table, a linear module mounted on the side of the fixed frame, a mounting block mounted on the output end of the linear module, a detector fixedly mounted on the side of the mounting block, and a detection probe provided at the bottom of the detector to contact the pins of the component, the detection probe being located directly above the pins of the component.

[0018] Further technical solution: The testing platform is also equipped with a receiving mechanism, which includes a blowing assembly, a receiving assembly, and a receiving box. The receiving box is installed on the side of the testing platform.

[0019] The blowing assembly includes a second telescopic rod and an air pump fixedly installed on the testing table. A second mounting bracket is fixedly installed on the movable end of the second telescopic rod. An air blowing pipe is fixedly installed on the top of the second mounting bracket. The end of the air blowing pipe that passes through the testing table is connected to a sealing cover. An air blowing hole is opened on the workstation turntable. An air supply hole and a material discharge hole are respectively opened on the mounting table and the material discharge table. The air supply hole is connected to the air blowing hole. A hose is connected to the air outlet of the air pump. One end of the hose is connected to the air blowing pipe.

[0020] The receiving assembly includes a first telescopic rod fixedly installed on the testing table. A first mounting bracket is fixedly installed at the movable end of the first telescopic rod. A corrugated pipe is fixedly installed at the end of the first mounting bracket. The corrugated pipe is located above the component at the unloading station. A material conveying conduit is also fixedly installed on the testing table via a second connector. One end of the corrugated pipe is fixedly connected to one end of the material conveying conduit, and the other end of the corrugated pipe extends into the receiving box.

[0021] Further technical solution: The receiving mechanism also includes a receiving platform and a second servo motor. Both the receiving platform and the second servo motor are fixedly installed inside the receiving box. The second servo motor is located inside the receiving platform. The output shaft of the second servo motor is fixedly connected to a buffer plate. A buffer pad is provided on the top of the buffer plate. One end of the material conveying conduit is fixedly installed on the receiving box through a first fixing member. Initially, one end of the material conveying conduit is located directly above the buffer pad. A scraper is also fixedly installed on the side of the receiving box. The scraper is located above the receiving platform. The distance from the bottom of the scraper to the top of the buffer pad is less than the thickness of the component. The distance from the bottom of the buffer plate to the surface of the receiving platform is less than the thickness of the component.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention, by setting up a workstation turntable, a positioning clamping mechanism and a detection component, allows the positioning clamping mechanism to position and clamp components. When the positioning clamping mechanism moves the components to the bottom of the detection component, the output end of the detection component can be accurately connected to each pin of the components without repeated adjustments, greatly saving connection time and improving detection efficiency. Moreover, each machine only requires one worker to be responsible for loading and unloading, eliminating the need for a large number of detection positions and reducing labor costs.

[0024] 2. In this invention, by setting a limiting mechanism, the release component will drive the clamping slider to move backward during unloading, and then the limiting mechanism will fix the clamping slider, leaving space for placing components between the clamping slider and the unloading table, which makes it convenient for workers to load materials directly and shortens the loading time.

[0025] 3. In this invention, by setting up a thickened copper tube and a permanent magnet, when the clamping slider moves towards the unloading platform, the clamping slider drives the permanent magnet to insert into the thickened copper tube. The thickened copper tube provides resistance and buffer for the permanent magnet, so that the clamping slider slowly contacts the component and slowly clamps and fixes the component, thereby avoiding the clamping slider from impacting the component and preventing the component from being damaged.

[0026] 4. This invention, by setting up a blowing component, a receiving component, and a receiving box, allows components to be blown into the receiving component by the blowing component and then moved along the receiving component into the receiving box. This solves the problem of manual material handling, and compared to a robotic arm, this mechanism has a lower cost, making it affordable even for small factories. This mechanism does not require staff assistance, greatly shortens the material unloading time, avoids damage to components, and improves both material unloading and testing efficiency.

[0027] 5. In this invention, by setting up a receiving platform, a buffer plate, and a scraper, the components moving along the conveying conduit will fall onto the buffer pad. The buffer pad cushions the components, and the scraper scrapes the components off the buffer pad onto the receiving platform. When feeding again, the buffer pad can push the components on the surface of the receiving platform onto the slope of the receiving platform and fall into the receiving box. This mechanism can prevent the components from directly impacting the receiving box and also prevent a large number of components from accumulating below the end of the conveying conduit, thereby preventing the accumulated components from affecting the discharge of the conveying conduit. Attached Figure Description

[0028] Figure 1 This is a top view of the overall structure of the present invention.

[0029] Figure 2 In this invention Figure 1 Enlarged diagram of point A in the middle.

[0030] Figure 3This is a front view schematic diagram of the positioning and clamping mechanism in this invention.

[0031] Figure 4 This is a partial structural diagram of the positioning and clamping mechanism in this invention.

[0032] Figure 5 In this invention Figure 1 Enlarged diagram of point B in the middle.

[0033] Figure 6 In this invention Figure 1 Enlarged diagram of point C in the middle.

[0034] Figure 7 This is a schematic diagram of the overall side view structure of the present invention.

[0035] Figure 8 In this invention Figure 8 Enlarged diagram of point E in the middle.

[0036] Figure 9 This is a schematic diagram of the overall oblique structure in this invention.

[0037] Figure 10 In this invention Figure 9 Enlarged diagram of point D in the middle.

[0038] Figure 11 This is a schematic diagram of the overall and partial bottom view structure of the present invention.

[0039] Figure 12 This is a schematic diagram of the material receiving assembly in this invention.

[0040] Figure 13 This is a partial cross-sectional structural diagram of the positioning and clamping mechanism installed in this invention.

[0041] In the attached diagram: 1. Inspection table; 2. Workstation turntable; 3. Receiving mechanism; 31. Receiving box; 32. Second servo motor; 33. Buffer pad; 34. Buffer plate; 35. First fixing component; 36. Conveying conduit; 37. Receiving platform; 38. Scraper; 39. First telescopic rod; 310. First mounting bracket; 311. Corrugated pipe; 312. Sealing cover; 313. Air blowing pipe; 314. Second mounting bracket; 315. Second telescopic rod; 316. Hose; 317. Air pump; 318. Air blowing hole; 4. Fixing plate; 5. Positioning and clamping mechanism; 51. Discharge platform; 52. Discharge air hole; 53. Positioning groove; 54. Buffer assembly; 541. Thickened copper pipe; 542. Permanent magnet; 543. Third mounting bracket; 55. Clamping slide. 56. Mounting platform; 57. Release wedge block; 58. Limiting mechanism; 581. Toothed block; 582. Second compression spring; 583. Fixed cylinder; 584. Wedge block; 585. Limiting triangular block; 59. First compression spring; 510. Guide rail; 511. Limiting head; 512. Air inlet; 6. Detection assembly; 61. Linear module; 62. Mounting block; 63. Detector; 64. Detection probe; 65. Fixing frame; 7. Clamping power assembly; 71. Third telescopic rod; 72. Fourth mounting frame; 73. Release roller; 8. First servo motor; 9. Release assembly; 91. Fourth telescopic rod; 92. Fifth mounting frame; 93. Guide wheel; 10. Components; 11. Fixed column; 12. Rotating tube; 13. Mounting cover. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0043] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0044] like Figures 1-13 As shown, this invention provides an intelligent inspection fixture for precision parts, including an inspection table 1. An installation cover 13 is mounted on the bottom of the inspection table 1. A rotating tube 12 is rotatably mounted inside the installation cover 13. A station turntable 2 is fixedly connected to one end of the rotating tube 12 extending to the top of the inspection table 1. Multiple evenly distributed positioning and clamping mechanisms 5 are mounted on the station turntable 2. The positioning and clamping mechanisms 5 are used to position and clamp components 10. In this embodiment, each positioning and clamping mechanism 5 is a station, and there are four positioning and clamping mechanisms 5 in total: an inspection station, a loading station, a loading station, and a clamping station. A first servo motor 8 is fixedly mounted on the side of the installation cover 13. A transmission pair connects the output shaft of the first servo motor 8 to the rotating tube 12.

[0045] The testing station 1 is also equipped with a testing component 6. The output end of the testing component 6 is located above the testing station. The testing component 6 is used to test the components 10 on the positioning and clamping mechanism 5.

[0046] A fixing post 11 is fixedly installed on the mounting cover 13. One end of the fixing post 11 passes through the inside of the rotating tube 12 and extends to the top of the workstation turntable 2. A fixing plate 4 is fixedly installed on the top of the fixing post 11. A clamping power assembly 7 and a release assembly 9 are fixedly installed on the fixing plate 4. The positions of the clamping power assembly 7 and the release assembly 9 are adapted to the clamping station and the unloading station, respectively. The clamping power assembly 7 is used to position and clamp the component 10 by the positioning clamping mechanism 5, which facilitates the subsequent detection of the component 10 by the detection assembly 6. The release assembly 9 is used to release the clamping mechanism 5 from the component 10, which facilitates the unloading of the component 10.

[0047] Specifically, at the loading station, the worker places component 10 onto the positioning and clamping mechanism 5. The first servo motor 8 drives the rotating tube 12 and the station turntable 2 to rotate one station through the transmission pair. The positioning and clamping mechanism 5 drives component 10 to rotate to the clamping station. The clamping power component 7 drives the output end of the positioning and clamping mechanism 5 to position and clamp component 10. Then, the first servo motor 8 drives the station turntable 2 to rotate one station. The detection component 6 detects component 10 on the positioning and clamping mechanism 5. Then, the first servo motor 8 drives the station turntable 2 to rotate one station again, so that the detected component 10 rotates to the unloading station. The release component 9 drives the output end of the positioning and clamping mechanism 5 to move in the opposite direction, thereby releasing the clamping of component 10, allowing component 10 to be unloaded at this point.

[0048] In this invention, the component 10 is placed on the positioning and clamping mechanism 5, which can position and clamp the component 10. When the positioning and clamping mechanism 5 moves the component 10 to the bottom of the detection component 6, the output end of the detection component 6 can be accurately connected to each pin of the component 10 without repeated adjustments, which greatly saves connection time and improves detection efficiency. Moreover, each machine only requires one worker to be responsible for loading and unloading, eliminating the need to set up a large number of detection positions and reducing labor costs.

[0049] In this embodiment, component 10 is a rectifier bridge, and the detection component 6 can detect parameters such as forward voltage drop (Vf), reverse leakage current (Ir), insulation resistance, and on-state voltage drop (full bridge) of component 10. These detection principles are existing technologies and will not be described in detail here.

[0050] This invention provides an intelligent inspection fixture for precision parts. In this embodiment, the positioning and clamping mechanism 5 includes a mounting platform 56 fixedly installed on a workstation turntable 2. A feeding platform 51, a guide rail 510, and a limiting head 511 are sequentially fixedly installed on the mounting platform 56. A clamping slider 55 is slidably installed on the guide rail 510. The clamping slider 55 is located between the feeding platform 51 and the limiting head 511. A first compression spring 59 connects the limiting head 511 and the clamping slider 55. A positioning groove 53 adapted to the component 10 is opened on the side of the clamping slider 55 near the feeding platform 51. When the component 10 is placed on the feeding platform 51, under the action of the first compression spring 59, the clamping slider 55 presses the component 10 onto the feeding platform 51. Simultaneously, the component 10 is inserted into the positioning groove 53, facilitating the positioning of the component 10 for subsequent inspection.

[0051] In order to facilitate pushing the clamping slider 55 open to release the component 10, a release wedge 57 is fixedly installed on the side of the clamping slider 55. The release wedge 57 has an inclined surface. When the output end of the release assembly 9 presses the inclined surface of the release wedge 57, the clamping slider 55 can be pushed out in the opposite direction, thereby releasing the component 10.

[0052] In order to fix the clamping slider 55 so that it can be loaded onto the feeding table 51, a limiting mechanism 58 is installed between the mounting table 56 and the release wedge 57. When the clamping slider 55 releases the component 10, the limiting mechanism 58 is used to fix the release wedge 57 and the clamping slider 55.

[0053] This invention provides an intelligent inspection fixture for precision parts. In this embodiment, the limiting mechanism 58 includes a fixed cylinder 583 fixedly mounted on a mounting platform 56. A wedge block 584 is slidably mounted inside the fixed cylinder 583. A second compression spring 582 connects the wedge block 584 and the fixed cylinder 583. A limiting triangular block 585 adapted to the wedge block 584 is fixedly connected to the bottom of the release wedge block 57. When the clamping slider 55 moves the release wedge block 57 and the fixed cylinder 583 backward (towards the material discharge), (Moves in the direction of platform 51), the fixed cylinder 583 will squeeze the wedge block 584 and pass over the wedge block 584. After the fixed cylinder 583 passes over the wedge block 584, under the action of the second compression spring 582, the wedge block 584 returns to its original position. When the release component 9 releases the clamping slider 55, under the action of the first compression spring 59, the clamping slider 55 moves towards the unloading platform 51. Then the limiting triangular block 585 will be blocked by the wedge block 584, leaving space between the clamping slider 55 and the unloading platform 51 to facilitate subsequent feeding.

[0054] In order to remove the obstruction of the wedge block 584 to the limiting triangular block 585, a toothed block 581 that cooperates with the clamping power assembly 7 is fixedly connected to the side of the wedge block 584. The toothed block 581 has an inclined surface at one end extending out of the fixed cylinder 583, and a sliding hole for the toothed block 581 to move is opened on the side of the fixed cylinder 583.

[0055] Specifically, when the clamping slider 55 is released from its fixed position, the output end of the clamping power component 7 presses against the toothed block 581, causing the toothed block 581 to drive the wedge block 584 downward. When the top of the wedge block 584 is lower than the bottom of the limiting triangle block 585, the wedge block 584 no longer blocks the limiting triangle block 585. Then the clamping slider 55 moves towards the unloading table 51, thereby positioning and clamping the component 10 on the unloading table 51.

[0056] The present invention provides a precision parts intelligent inspection fixture. Due to the small friction between the clamping slider 55 and the guide rail 510, after the clamping slider 55 is released from its fixed state, under the large elasticity of the first compression spring 59, the clamping slider 55 will rapidly impact the component 10, which may cause damage to the component 10. Therefore, in this embodiment, the positioning clamping mechanism 5 also includes a buffer assembly 54. The buffer assembly 54 includes a thickened copper tube 541, a third mounting bracket 543, and a permanent magnet 542. The thickened copper tube 541 is fixedly mounted on the mounting platform 56, the third mounting bracket 543 is fixedly mounted on the side of the clamping slider 55, and the permanent magnet 542 is fixedly mounted on the end of the third mounting bracket 543. The axis of the permanent magnet 542 coincides with the axis of the thickened copper tube 541.

[0057] Specifically, when the clamping slider 55 moves toward the unloading table 51, the clamping slider 55 will drive the permanent magnet 542 to insert into the thickened copper tube 541 through the third mounting bracket 543, and make the permanent magnet 542 move in the thickened copper tube 541. The thickened copper tube 541 will provide resistance and buffer for the permanent magnet 542, so that the clamping slider 55 slowly contacts the component 10 and slowly clamps and fixes the component 10, thereby avoiding the clamping slider 55 from impacting the component 10.

[0058] The principle by which the thickened copper tube 541 buffers the permanent magnet 542 is as follows: When the permanent magnet 542 moves in the thickened copper tube 541, the magnetic field around the permanent magnet 542 changes continuously with the movement. Copper is a good conductor, and the changing magnetic field will induce a circular current, namely eddy current, in the inner wall of the thickened copper tube 541. Lenz's law states that the direction of the induced current always opposes the change in the magnetic field that caused it. Therefore, the eddy current will generate a new magnetic field opposite to the magnetic field of the permanent magnet 542. This is equivalent to forming a "repulsive magnetic field" on the side of the permanent magnet 542 and an "attractive magnetic field" on the other side. Therefore, the permanent magnet 542 is subjected to a reverse resistance (electromagnetic damping) when it moves, which causes the movement speed of the permanent magnet 542 to be greatly reduced, thereby achieving buffering of the permanent magnet 542 and the clamping slider 55.

[0059] Furthermore, since the resistance between the permanent magnet 542 and the thickened copper tube 541 comes entirely from the electromagnetic field, and there is no physical contact between the permanent magnet 542 and the thickened copper tube 541, there is no mechanical friction.

[0060] When the permanent magnet 542 is stationary in the thickened copper tube 541, since the magnetic field does not change, no eddy current will be generated, and the resistance between the thickened copper tube 541 and the permanent magnet 542 will disappear. Therefore, the clamping slider 55 can firmly clamp the component 10 on the feeding table 51.

[0061] In addition, the factors affecting the resistance between the permanent magnet 542 and the thickened copper tube 541 include:

[0062] 1) Strength of permanent magnet 542: The stronger the permanent magnet 542 (the greater the rate of change of the magnetic field), the stronger the induced eddy current, the greater the resistance, and the slower the fall.

[0063] 2) Conductivity of thickened copper tube 541: The better the conductivity of thickened copper tube 541 (such as pure copper), the stronger the eddy current and the more obvious the resistance.

[0064] 3) Thicken the wall of copper tube 541: The thicker the tube wall, the smaller the resistance of the eddy current path and the stronger the resistance.

[0065] 4) Diameter of thickened copper tube 541: The effect is best when the tube diameter matches the size of permanent magnet 542 (permanent magnet 542 is close to the wall of thickened copper tube 541, and the magnetic field cutting is more complete).

[0066] 5) Temperature: At low temperatures, the resistance of copper decreases, the eddy current is stronger, and the resistance is greater.

[0067] In actual production, the parameters of the permanent magnet 542 and the thickened copper tube 541 can be adjusted according to the elastic coefficient of the selected first compression spring 59 so that the permanent magnet 542 and the thickened copper tube 541 can achieve the best match.

[0068] The present invention provides a precision parts intelligent inspection fixture. In this embodiment, the clamping power assembly 7 includes a third telescopic rod 71 fixedly installed on a fixed plate 4. A fourth mounting frame 72 is fixedly installed on the movable end of the third telescopic rod 71. A release roller 73 that cooperates with the toothed block 581 is rotatably installed on the fourth mounting frame 72.

[0069] Specifically, at the clamping station, the third telescopic rod 71 drives the release roller 73 to move towards the toothed block 581. The release roller 73 contacts and squeezes the inclined surface of the toothed block 581, which can squeeze the toothed block 581 downward. The toothed block 581 drives the wedge block 584 to move downward, thereby releasing the obstruction of the limiting triangle block 585, so that the clamping slider 55 can position and clamp the component 10 on the unloading table 51.

[0070] The present invention provides a precision parts intelligent inspection fixture. In this embodiment, the unlimiting component 9 includes a fourth telescopic rod 91 fixedly installed on a fixed plate 4. A fifth mounting bracket 92 is fixedly installed on the movable end of the fourth telescopic rod 91. A guide wheel 93 that cooperates with the unlimiting wedge block 57 is rotatably installed on the fifth mounting bracket 92.

[0071] Specifically, at the unloading station, the fourth telescopic rod 91 drives the guide wheel 93 to move towards the release wedge 57. The guide wheel 93 contacts the inclined surface of the release wedge 57 and squeezes the release wedge 57. The guide wheel 93 drives the release wedge 57 and the clamping slider 55 to retract, releasing the clamping slider 55 from fixing the component 10. When the release wedge 57 drives the limiting triangle block 585 past the wedge block 584, the fourth telescopic rod 91 drives the guide wheel 93 to retract. Then the limiting triangle block 585 will be blocked by the wedge block 584, leaving space between the clamping slider 55 and the unloading table 51 for placing the component 10.

[0072] The present invention provides an intelligent inspection fixture for precision parts. In this embodiment, the inspection component 6 includes a fixed frame 65 fixedly installed on the inspection table 1. A linear module 61 is installed on the side of the fixed frame 65. A mounting block 62 is installed at the output end of the linear module 61. An inspection instrument 63 is fixedly installed on the side of the mounting block 62. The bottom of the inspection instrument 63 is provided with an inspection probe 64 that contacts the pins of the component 10. The inspection probe 64 is located directly above the pins of the component 10.

[0073] Specifically, when the positioning and clamping mechanism 5 drives the component 10 to rotate to the testing station, the linear module 61 drives the mounting block 62 and the detector 63 to descend, so that the detector 63 drives the detection probe 64 to contact the pins of the component 10, thereby enabling the detector 63 to test the component 10.

[0074] The detector 63 used in this application is an integrated tester that can complete the testing of parameters such as Vf, Ir, and insulation resistance in one go, automatically determine OK / NG, and issue an alarm to remind the staff.

[0075] Integrated testers are already in use, such as the NSAT-2000, which adopts an ALL IN ONE mode and adapts to different packaged devices through a unified interface; it supports parallel communication of multiple instruments (such as programmable power supplies, electronic loads, and digital multimeters); it has the function of automatically saving data and generating reports; it supports the detection of core parameters such as forward voltage drop (Vf), reverse leakage current (Ir), and insulation resistance of rectifier bridges, and is compatible with other discrete devices such as diodes and transistors. The principle of this tester will not be elaborated here.

[0076] This invention provides an intelligent inspection fixture for precision parts. In the prior art, some small factories may not be able to afford robotic arms for loading and unloading, and still rely on manual handling. However, due to the small size of component 10 (depending on its model, the largest rectifier bridge may be slightly larger than a worker's thumb), it is inconvenient for workers to pick it up. (Relatively speaking, loading is easier than unloading because the worker only needs to pinch component 10 with two fingers, move it above the loading platform 51, and then release it. Component 10 will naturally fall onto the loading platform 51, and then the positioning slot 53 can position component 10...) When loading component 10, precise positioning is not required; however, when unloading, component 10 needs to be removed from the unloading table 51. But the unloading table 51 will block the operator's fingers from passing through, so the operator can only use a small part of their fingers to contact component 10, making it difficult to hold component 10 stably. Especially in a very short time, during the process of picking up component 10, component 10 may fall, causing unloading difficulties. Therefore, in this embodiment, the detection table 1 is also equipped with a receiving mechanism 3. The receiving mechanism 3 includes a blowing component, a receiving component, and a receiving box 31. The receiving box 31 is installed on the side of the detection table 1.

[0077] The blowing assembly includes a second telescopic rod 315 and an air pump 317 fixedly installed on the testing table 1. A second mounting bracket 314 is fixedly installed on the movable end of the second telescopic rod 315. An air blowing pipe 313 is fixedly installed on the top of the second mounting bracket 314. The end of the air blowing pipe 313 that passes through the testing table 1 is connected to a sealing cover 312. An air blowing hole 318 is opened on the workstation turntable 2. An air supply hole 512 and a material discharge hole 52 that are connected to each other are opened on the mounting table 56 and the material discharge table 51, respectively. The air supply hole 512 is connected to the air blowing hole 318. A hose 316 is connected to the air outlet of the air pump 317. One end of the hose 316 is connected to the air blowing pipe 313.

[0078] The receiving assembly includes a first telescopic rod 39 fixedly installed on the testing table 1. A first mounting bracket 310 is fixedly installed at the movable end of the first telescopic rod 39. A corrugated pipe 311 is fixedly installed at the end of the first mounting bracket 310. The corrugated pipe 311 is located above the component 10 at the unloading station. A material conveying conduit 36 ​​is also fixedly installed on the testing table 1 through a second connector. One end of the corrugated pipe 311 is fixedly connected to one end of the material conveying conduit 36, and the other end of the corrugated pipe 311 extends into the receiving box 31.

[0079] Specifically, during the unloading process, the release component 9 drives the clamping slider 55 to retract, releasing the fixed state of the component 10. Then, the second telescopic rod 315 drives the air blowing pipe 313 and the sealing cover 312 to rise, so that the sealing cover 312 contacts the bottom of the station turntable 2 and connects the sealing cover 312 with the air blowing hole 318. Then, the first telescopic rod 39 drives the bellows 311 to descend through the first mounting bracket 310, so that the bellows 311 covers the component 10. Then, the air pump 317 is started. The air pump 317 introduces high-pressure gas into the air blowing hole 318 through the hose 316 and the air blowing pipe 313. The high-pressure gas passes through the air delivery hole 512 and is sprayed out from the unloading air hole 52. The high-pressure gas can push the component 10 into the bellows 311 and make the component 10 fall into the receiving box 31 along the material delivery guide 36, completing the unloading process.

[0080] After the material is unloaded, the first telescopic rod 39 drives the bellows 311 to rise, moving the bellows 311 away from the positioning clamping mechanism 5 to avoid damage to the bellows 311. The second telescopic rod 315 drives the air blowing pipe 313 and the sealing cover 312 to fall, moving the sealing cover 312 away from the station turntable 2 to avoid damage to the integrity of the sealing cover 312 by the station turntable 2. Then the station turntable 2 can continue to rotate to rotate the tested component 10 to the unloading station. Repeat the above process to unload the component 10.

[0081] The mechanism is composed entirely of existing components 10. Compared to a robotic arm, the cost of this mechanism is lower, making it affordable even for small factories. This mechanism can quickly unload components 10 without the need for staff assistance, greatly shortening the unloading time and avoiding damage to components 10, thus improving unloading efficiency and the overall testing efficiency of the testing process.

[0082] This invention provides an intelligent inspection fixture for precision parts. During the process of a component 10 falling into a receiving box 31 via a feeding conduit 36, the component 10 may impact the bottom of the receiving box 31, potentially causing damage. In this embodiment, the receiving mechanism 3 further includes a receiving platform 37 and a second servo motor 32. Both the receiving platform 37 and the second servo motor 32 are fixedly installed inside the receiving box 31. The receiving platform 37 is an arc-shaped block with a slope at one end. The second servo motor 32 is located inside the receiving platform 37, and its output shaft is fixedly connected to... A buffer plate 34 is provided, and a buffer pad 33 is provided on the top of the buffer plate 34. The buffer pad 33 is made of sponge material. One end of the material conveying conduit 36 ​​is fixedly installed on the receiving box 31 by the first fixing member 35. Initially, one end of the material conveying conduit 36 ​​is located directly above the buffer pad 33. A scraper 38 is also fixedly installed on the side of the receiving box 31. The scraper 38 is located above the receiving platform 37. The distance from the bottom of the scraper 38 to the top of the buffer pad 33 is less than the thickness of the component 10. The distance from the bottom of the buffer plate 34 to the surface of the receiving platform 37 is less than the thickness of the component 10.

[0083] Specifically, the component 10 entering the conveying guide 36 eventually falls onto the buffer pad 33, which cushions the component 10. Then, the second servo motor 32 drives the buffer pad 33 to rotate. When passing the scraper 38, the component 10 on the buffer pad 33 is blocked and falls onto the receiving platform 37. Then, the second servo motor 32 drives the buffer pad 33 to rotate one revolution and stops again below the conveying guide 36. When feeding again, the second servo motor 32 drives the buffer pad 33 to rotate again. The moving buffer pad 33 rotates, and then the buffer pad 33 can push the components 10 on the surface of the receiving platform 37 onto the slope of the receiving platform 37. Under the action of gravity, the components 10 fall into the receiving box 31, while the components 10 on the buffer pad 33 will fall onto the receiving platform 37. This cycle repeats, which can prevent the components 10 from directly hitting the receiving box 31, and also prevent a large number of components 10 from accumulating below the end of the conveying conduit 36, thereby preventing the accumulated components 10 from affecting the discharge of the conveying conduit 36.

[0084] In this invention, the first telescopic rod 39, the second telescopic rod 315, the third telescopic rod 71, and the fourth telescopic rod 91 are hydraulic telescopic rods or pneumatic telescopic rods.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0086] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent detection jig for precision parts, comprising a detection table, characterized in that, The bottom of the detection table is provided with a mounting cover, a rotating pipe is rotatably arranged in the mounting cover, one end of the rotating pipe extends to the top of the detection table and is fixedly connected with a work station turntable, a plurality of work stations are arranged on the work station turntable, which are a detection station, a blanking station, a feeding station and a clamping station in sequence, a positioning and clamping mechanism is arranged on each work station of the work station turntable, the positioning and clamping mechanism is used for clamping components, a first servo motor is fixedly arranged on the side of the mounting cover, and a transmission pair is connected between the output shaft of the first servo motor and the rotating pipe; A detection assembly is further arranged on the detection table, and the output end of the detection assembly is located above the detection station, the detection assembly is used for detecting the components on the positioning and clamping mechanism; A fixed column is fixedly arranged on the mounting cover, one end of the fixed column extends to the top of the work station turntable from the inside of the rotating pipe, a fixed disc is fixedly arranged on the top of the fixed column, a clamping power assembly and a releasing assembly are fixedly arranged on the fixed disc, the positions of the clamping power assembly and the releasing assembly are matched with the clamping station and the blanking station respectively, the clamping power assembly is used for positioning and clamping the components by the positioning and clamping mechanism, and the releasing assembly is used for releasing the clamping of the components by the positioning and clamping mechanism; The positioning and clamping mechanism comprises a mounting table fixedly arranged on the work station turntable, a feeding table, a guide rail and a limiting head are fixedly arranged on the mounting table in sequence, a clamping sliding block is slidably arranged on the guide rail, a first compression spring is connected between the limiting head and the clamping sliding block, and a positioning groove matched with the components is formed in the side of the clamping sliding block close to the feeding table; A releasing wedge block is fixedly arranged on the side of the clamping sliding block, an inclined surface is arranged on the releasing wedge block, and the output end of the releasing assembly extrudes the inclined surface of the releasing wedge block, so that the clamping sliding block is reversely pushed out, thereby releasing the components; A limiting mechanism is arranged between the mounting table and the releasing wedge block, and is used for fixing the releasing wedge block and the clamping sliding block after the clamping sliding block releases the components; The limiting mechanism comprises a fixed cylinder fixedly arranged on the mounting table, a wedge-shaped block is slidably arranged in the fixed cylinder, a second compression spring is connected between the wedge-shaped block and the fixed cylinder, and a limiting triangular block matched with the wedge-shaped block is fixedly connected to the bottom of the releasing wedge block; A tooth block matched with the clamping power assembly is fixedly connected to the side of the wedge-shaped block; When the clamping sliding block drives the releasing wedge block and the fixed cylinder to move away from the feeding table, the fixed cylinder extrudes and passes the wedge-shaped block, and after the fixed cylinder passes the wedge-shaped block, the wedge-shaped block returns to the original position under the action of the second compression spring, after the releasing assembly releases the clamping sliding block, the clamping sliding block moves towards the feeding table under the action of the first compression spring, then the limiting triangular block is blocked by the wedge-shaped block, so that a space is left between the clamping sliding block and the feeding table, thereby facilitating subsequent feeding. The output end of the clamping power assembly extrudes the tooth blocks, and drives the wedge-shaped blocks to move downward. When the top of the wedge-shaped blocks is lower than the bottom of the limiting triangular blocks, the wedge-shaped blocks no longer block the limiting triangular blocks, and then the clamping sliding blocks move to the direction of the material placing table, thereby positioning and clamping the components on the material placing table.

2. The precision part intelligent detection fixture of claim 1, wherein The positioning and clamping mechanism further comprises a buffer assembly, which comprises a thickened copper pipe, a third mounting frame and a permanent magnet. The thickened copper pipe is fixedly installed on the mounting table. The third mounting frame is fixedly installed on the side of the clamping sliding block. The permanent magnet is fixedly installed on the end of the third mounting frame. The axis of the permanent magnet coincides with the axis of the thickened copper pipe.

3. The precision part intelligent detection fixture of claim 1, wherein The clamping power assembly comprises a third telescopic rod fixedly installed on the fixed disc. The movable end of the third telescopic rod is fixedly installed with a fourth mounting frame. The fourth mounting frame is rotatably installed with a releasing roller.

4. The precision part intelligent detection fixture of claim 1, wherein The releasing assembly comprises a fourth telescopic rod fixedly installed on the fixed disc. The movable end of the fourth telescopic rod is fixedly installed with a fifth mounting frame. The fifth mounting frame is rotatably installed with a guide wheel.

5. The precision part intelligent detection fixture of claim 1, wherein The detection assembly comprises a fixed frame fixedly installed on the detection table. The side of the fixed frame is installed with a linear module. The output end of the linear module is installed with a mounting block. The side of the mounting block is fixedly installed with a detector. The bottom of the detector is provided with a detection probe, which is located directly above the component pin.

6. The precision part intelligent detection fixture of claim 1, wherein The detection table is further installed with a material receiving mechanism. The material receiving mechanism comprises a material blowing assembly, a material receiving assembly and a material receiving box. The material receiving box is installed on the side of the detection table. The material blowing assembly comprises a second telescopic rod fixedly installed on the detection table and a gas pump. The movable end of the second telescopic rod is fixedly installed with a second mounting frame. The top of the second mounting frame is fixedly installed with a blowing pipe. The end of the detection table is communicated with a sealing cover through the blowing pipe. The working position turntable is provided with a blowing hole. The mounting table and the material placing table are respectively provided with a gas conveying hole and a discharging gas hole, which are communicated with each other. The gas conveying hole is communicated with the blowing hole. The gas outlet of the gas pump is communicated with a hose. One end of the hose is communicated with the blowing pipe. The material receiving assembly comprises a first telescopic rod fixedly installed on the detection table. The movable end of the first telescopic rod is fixedly installed with a first mounting frame. The end of the first mounting frame is fixedly installed with a bellows. The bellows is located above the component at the discharging working position. The detection table is further fixedly installed with a material conveying pipe through a second connecting piece. One end of the bellows is fixedly connected with one end of the material conveying pipe. The other end of the bellows extends into the interior of the material receiving box.

7. The precision part intelligent detection fixture of claim 6, wherein, The material receiving mechanism further comprises a material receiving table and a second servo motor, both of which are fixedly installed inside the material receiving box, the second servo motor is located at the inner side of the material receiving table, the output shaft of the second servo motor is fixedly connected with a buffer plate, the top of the buffer plate is provided with a buffer pad, one end of the material conveying pipe is fixedly installed on the material receiving box through a first fixing piece, at the beginning, the one end of the material conveying pipe is located directly above the buffer pad, a material scraping plate is further fixedly installed on the side of the material receiving box, the material scraping plate is located above the material receiving table, the distance from the bottom of the material scraping plate to the top of the buffer pad is less than the thickness of the components, and the distance from the bottom of the buffer plate to the surface of the material receiving table is less than the thickness of the components.

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