A detection device for an automobile sensor valve seat

Abstract

The application discloses a kind of detection devices for automobile sensor valve seat, applied to sensor valve seat detection field, including detection component, detection component includes detection box, the upper end of detection box is equipped with the sliding groove two of through, the inside of detection box is provided with rack, the top of rack is fixedly installed with motor two, the output of motor two is connected with gear, the top of rack is fixedly connected with limit seat, the upper end of limit seat is equipped with limit slot, limit slot inside is slidably connected with movable block, the both sides of movable block outside are respectively equipped with multiple groups of rack and protective strip, the combined width of multiple groups of rack is much greater than the thickness of gear, the structure shape of movable block is U-shaped, the U-shaped opening of movable block faces rotating disc, the upper part U-shaped groove opening end of movable block is closed, telescopic rod two is installed in the inside of limit slot, telescopic rod two is located in the opening side of movable block, the output of telescopic rod two faces rotating disc and is fixedly installed with support plate, the present application has the characteristics of detecting valve seat shape and weight.

Description

Technical Field

[0001] This invention relates to the field of sensor valve seat detection technology, specifically to a detection device for automotive sensor valve seats. Background Technology

[0002] Automotive sensors are the core sensing components of automotive electronic control systems, used to receive various physical parameters during vehicle operation. Automotive sensor valve seats are structures specifically designed for the installation and sealing of sensors.

[0003] Because automotive sensor valve seats are small in size, traditional physical contact detection is difficult to ensure accuracy. Therefore, optical methods are used for detection. Under current technology, optical detection equipment for valve seats needs to be equipped with a positioning mechanism to adjust the posture of the valve seat. However, the existing positioning mechanism forms a blind zone with the contact surface of the valve seat, requiring frequent replacement of the contact area, which affects detection efficiency.

[0004] Therefore, how to achieve efficient and accurate detection of automotive sensor valve seats has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a detection device for automotive sensor valve seats to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a detection device for automotive sensor valve seats, comprising a base, a transfer assembly, a detection assembly, and an analysis module. The transfer assembly includes a turntable and a motor. The detection assembly includes a detection box, which is fixedly connected to the base and located below the turntable. A through sliding groove is provided at the upper end of the detection box. A frame is provided inside the detection box. A motor is fixedly installed at the top of the frame. The output end of the motor faces the sliding groove and is fixedly connected to a gear. A limiting seat is fixedly connected at the top of the frame. A limiting groove is provided at the upper end of the limiting seat. A movable block is slidably connected inside the limiting groove. Multiple sets of racks and protective strips are respectively installed on both sides of the movable block. The combined width of the multiple sets of racks is much greater than the thickness of the gear. The racks mesh with the gear to form a sliding gear mechanism.

[0007] The movable block has a U-shaped structure with the U-shaped opening facing the turntable. A through groove is provided in the upper part of the movable block, dividing it into upper and lower parts. The upper part of the movable block has a closed U-shaped groove opening. A second telescopic rod is installed inside the limiting groove. The second telescopic rod is located on the opening side of the movable block, and its output end faces the turntable and is fixedly installed with a support plate. A pressure detection module is installed inside the support plate.

[0008] According to the above technical solution, the fixed body of the turntable is fixedly connected to the base, the output end of the motor is fixedly connected to the turntable, a plurality of through placement openings are evenly opened at the upper end of the turntable, a sliding groove is opened on the side of the placement opening away from the center of the turntable, the width of the sliding groove is smaller than the diameter of the placement opening, observation openings are symmetrically opened on both sides of the placement opening, and a placement seat is provided inside the placement opening.

[0009] According to the above technical solution, the placement seat includes a cylindrical body, a placement platform is installed on one top side of the body, a reference shaft is installed on the top of the placement platform, a shoulder is provided on a section of the body located on the placement platform away from the reference shaft, and a limiting platform is installed on a section of the body away from the shoulder.

[0010] According to the above technical solution, the diameter of the placement platform is larger than the placement opening, the diameter of the shoulder is equal to the placement opening, the diameter of the main body is equal to the width of the sliding groove, and the diameter of the limiting platform is larger than the placement opening.

[0011] According to the above technical solution, a boss is machined inside the limiting groove on the side near the protective strip, and the width between the two U-shaped side walls of the movable block is greater than the diameter of the main body.

[0012] According to the above technical solution, a telescopic rod is fixedly installed at the upper end of the testing box, and a testing plate is fixedly installed at the output end of the telescopic rod. The testing plate is located above both the turntable and the testing box.

[0013] According to the above technical solution, a camera is installed on the detection plate in the area above the turntable. The observation direction of the camera is towards the turntable. Laser measuring instruments are symmetrically arranged on both sides of the camera and are fixedly connected to the detection plate.

[0014] According to the above technical solution, an arc-shaped fan plate is fixedly connected to the top of the detection box. The arc-shaped edge of the fan plate is complementary to the shape of the turntable. A through sliding groove three is opened at the upper end of the fan plate. The width of the sliding groove three is the same as the width of the sliding groove one.

[0015] According to the above technical solution, two sets of cameras are symmetrically installed on the upper end of the fan plate. The observation directions of the two sets of cameras are opposite. A third camera is set directly above the center point of the two sets of cameras. The third camera is fixedly connected to the detection plate.

[0016] According to the above technical solution, several sets of electric push rods are uniformly fixedly installed on the upper end of the fan plate. The output ends of each set of electric push rods intersect, and the intersection point coincides with the center point between the two sets of cameras.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting up a detection component, realizes the shape detection of automotive sensor valve seats; by setting up a pressure detection module, the shape data and weight data of the valve seats are combined to accurately determine the cause of defects, thereby further improving work efficiency. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the transfer component structure of the present invention;

[0021] Figure 3 This is the present invention. Figure 2 Schematic diagram of area A;

[0022] Figure 4 This is a schematic diagram of the placement base structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the detection component structure of the present invention;

[0024] Figure 6 This is a side view schematic diagram of the detection component of the present invention;

[0025] Figure 7 This is an exploded view of the detection component of the present invention;

[0026] Figure 8 This is a schematic diagram of the detection box structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the fan plate structure of the present invention;

[0028] Figure 10 This is a schematic diagram of the limiting seat structure of the present invention;

[0029] Figure 11 This is a schematic diagram of the active block structure of the present invention;

[0030] Figure 12 This is a schematic diagram of the gear installation of the present invention;

[0031] In the diagram: 1. Base; 2. Turntable; 3. Placement port; 4. Sliding groove one; 5. Observation port; 6. Placement seat; 7. Main body; 8. Placement platform; 9. Reference axis; 10. Shoulder; 11. Limiting platform; 12. Detection box; 13. Sliding groove two; 14. Telescopic rod one; 15. Detection plate; 16. Camera one; 17. Laser measuring instrument; 18. Fan plate; 19. Sliding groove three; 20. Camera two; 21. Camera three; 22. Frame; 23. Motor two; 24. Gear; 25. Limiting seat; 26. Limiting groove; 27. Movable block; 28. Rack; 29. ​​Protective strip; 30. Boss; 31. Through groove; 32. Telescopic rod two; 33. Support plate; 34. Electric push rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-3 The present invention provides a technical solution: a detection device for automotive sensor valve seats, comprising a base 1, a transfer component, a detection component, and an analysis module. The analysis module is used to receive and analyze signals from various actuators. The transfer component is disposed inside the base 1 and includes a turntable 2 and a motor (not shown in the figure). The fixed body of the turntable 2 is fixedly connected to the base 1, and the output end of the motor is fixedly connected to the turntable 2. The upper end of the turntable 2 is evenly provided with a plurality of through placement openings 3. A sliding groove 4 is provided on the side of the placement opening 3 away from the center of the turntable 2, which connects the placement opening 3 and the outside of the turntable 2. The width of the sliding groove 4 is smaller than the diameter of the placement opening 3.

[0034] Please see Figure 4 The placement opening 3 has symmetrical observation openings 5 ​​through the turntable 2 on both sides. The placement opening 3 has a placement seat 6 inside. The placement seat 6 includes a cylindrical body 7. A placement platform 8 is installed on the top of one side of the body 7. A reference shaft 9 is installed on the top of the placement platform 8. A shoulder 10 is opened on the section of the body 7 located on the placement platform 8 away from the reference shaft 9. A limiting platform 11 is installed on the section of the body 7 away from the shoulder 10. The diameter of the placement platform 8 is larger than that of the placement opening 3. The diameter of the shoulder 10 is equal to that of the placement opening 3. The diameter of the body 7 is equal to the width of the sliding groove 4. The diameter of the limiting platform 11 is larger than that of the placement opening 3. When the placement seat 6 is placed inside the placement opening 3, under the action of gravity, the lower surface of the placement platform 8 is in contact with the upper surface of the turntable 2, preventing the placement seat 6 from slipping out of the placement opening 3.

[0035] Please see Figures 5-7 The detection assembly is located inside the base 1. The detection assembly includes a detection box 12, which is fixedly connected to the base 1 and located below the turntable 2. A through sliding groove 13 is provided at the upper end of the detection box 12. A telescopic rod 14 is fixedly installed at the upper end of the detection box 12. A detection plate 15 is fixedly installed at the output end of the telescopic rod 14. The detection plate 15 is located above both the turntable 2 and the detection box 12. A camera 16 is installed in the area of ​​the detection plate 15 above the turntable 2. The observation direction of the camera 16 is towards the turntable 2. Laser measuring instruments 17 are symmetrically arranged on both sides of the camera 16. The laser measuring instruments 17 are fixedly connected to the detection plate 15. The laser measuring instruments 17 emit lasers to irradiate the surface of the valve seat being detected. By moving the laser, the surface of the valve seat being detected is scanned, thereby obtaining the shape data of the valve seat being detected. The specific working principle is the existing technology.

[0036] Please see Figure 9 An arc-shaped fan plate 18 is fixedly connected to the top of the detection box 12. The arc-shaped edge of the fan plate 18 complements the shape of the turntable 2. A through sliding groove 3 19 is provided at the upper end of the fan plate 18. The width of the sliding groove 3 19 is the same as the width of the sliding groove 4.

[0037] Two sets of cameras 20 are symmetrically installed on the upper end of the fan plate 18. The observation directions of the two sets of cameras 20 are opposite. A third camera 21 is set directly above the center point of the two sets of cameras 20. The third camera 21 is fixedly connected to the detection plate 15.

[0038] Please see Figure 7 , Figures 10-12 The testing box 12 has a frame 22 inside. A motor 23 is fixedly installed at the top of the frame 22. The output end of the motor 23 faces the sliding groove 13. A gear 24 is fixedly connected to the output end of the motor 23. A limit seat 25 is fixedly connected to the top of the frame 22. A limit groove 26 is opened at the upper end of the limit seat 25. A movable block 27 is slidably connected inside the limit groove 26. Multiple sets of racks 28 and protective strips 29 are respectively installed on both sides of the movable block 27. Figure 12 As shown), the combined width of multiple sets of racks 28 is much greater than the thickness of gear 24. The racks 28 and gear 24 mesh to form a sliding gear mechanism. Gear 24 can move axially within the width range of multiple sets of racks 28 and maintain meshing.

[0039] A boss 30 is machined inside the limiting groove 26 on the side near the protective strip 29. The movable block 27 has a U-shaped structure. In the U-shaped structure of the movable block 27, the width between the two side walls is greater than the diameter of the main body 7. The opening side faces the turntable 2. A through groove 31 is opened in the upper area of ​​the movable block 27. The through groove 31 divides the movable block 27 into upper and lower parts. The opening end of the upper part of the U-shaped groove of the movable block 27 is closed. A telescopic rod 32 is installed inside the limiting groove 26. The telescopic rod 32 is located on the opening side of the movable block 27. The output end of the telescopic rod 32 faces the turntable 2 and is fixedly installed with a support plate 33. A pressure detection module (not shown in the figure) is installed inside the support plate 33.

[0040] Several sets of electric push rods 34 are evenly fixedly installed on the upper end of the fan plate 18. The output ends of each set of electric push rods 34 intersect, and the intersection point coincides with the center point between the two sets of cameras 20.

[0041] Example 1: In the prior art, the automotive sensor valve seat has a symmetrical shape and a through hole at the center for transmitting the medium to be measured to the sensor. When the detection work begins, the operator puts the valve seat on the shaft of the reference shaft 9 through the through hole. The placement platform 8 supports the valve seat. The motor is started, and the motor drives the turntable 2 to rotate. The turntable 2 drives the placement seat 6 set inside the placement port 3 to rotate. The placement seat 6 drives the reference shaft 9 to rotate, thereby causing the reference shaft 9 to drive the valve seat to rotate.

[0042] Turntable 2 rotates the valve seat to below the detection plate 15. Using camera 16, the position of the reference axis 9 is observed from a top-down angle, ensuring that the central axis of the reference axis 9 is located between the two sets of laser measuring instruments 17. At this time, the placement seat 6 is directly above the support plate 33, and sliding groove 4 and sliding groove 3 19 are aligned (e.g., ...). Figure 9 (As shown).

[0043] Two sets of laser measuring instruments 17 are activated, emitting detection lasers that illuminate the two sides of the valve seat. The telescopic rod 14 is activated, causing it to retract and move the detection plate 15 closer to the turntable 2. The detection plate 15 moves the laser measuring instruments 17 downward, allowing the detection lasers to scan the valve seat surface. The laser measuring instruments 17 obtain the shape data of the valve seat. During the movement of the laser measuring instruments 17, they can pass through the observation port 5 to avoid interference with the turntable 2. The laser measuring instruments 17 and the camera 16 transmit the detected shape data to the analysis module. The analysis module compares the detected data with the standard data of the valve seat to determine whether the valve seat's through-hole diameter, height, width, and other shape parameters are qualified.

[0044] Furthermore, after the external shape inspection is completed, the telescopic rod 32 is activated, and it is controlled to extend outward, driving the support plate 33 to move closer to the turntable 2. The support plate 33 pushes the placement seat 6 upward, so that the placement platform 8 and the shoulder 10 are higher than the placement opening 3. At this time, part of the shaft of the main body 7 is located inside the placement opening 3. At this time, the support plate 33 supports the placement seat 6, and the turntable 2 only limits the placement seat 6 and no longer supports it. The limiting platform 11 is used to prevent the placement seat 6 from completely leaving the placement opening 3. The pressure detection module inside the support plate 33 detects the total weight of the valve seat and the placement seat 6 and transmits the weight signal to the analysis module. Since the weight of the placement seat 6 is known, the total weight minus the weight of the placement seat 6 is the weight of the valve seat. The analysis module compares the actual weight of the valve seat with the standard value to determine whether the actual weight exceeds the allowable error value, thereby determining whether the weight is qualified. During this process, the telescopic rod 32 can be used to drive the support plate 33 to move repeatedly and measure the weight of the valve seat multiple times to reduce errors.

[0045] A comprehensive analysis of the shape inspection results and weight inspection results yielded the following findings:

[0046] In scenario one, if the valve seat's shape and weight are both within acceptable limits, it indicates that the valve seat is generally acceptable.

[0047] Scenario 2: If the valve seat has a qualified appearance but an unqualified weight, it indicates that there is a certain density difference in the raw materials used to produce the valve seat, or that there are air holes or foreign objects inside the valve seat. The production process of the valve seat should be investigated and optimized.

[0048] If the valve seat shape is qualified, the shape of the valve seat shall be checked again to ensure the accuracy of the shape inspection.

[0049] Scenario 3: The valve seat is not up to standard in shape, but its weight is up to standard. This indicates that the valve seat was deformed due to external forces such as squeezing or impact during transportation after production.

[0050] Scenario 4: If the valve seat is not up to standard in both shape and weight, it indicates a systemic problem in the valve seat production.

[0051] For valve seats with non-compliant shapes, further inspections are conducted to determine the type of defects, providing reliable reference data for optimizing valve seat production.

[0052] Example 2: If the valve seat shape inspection is qualified, when the valve seat shape and weight are both qualified, the valve seat shape is rechecked to ensure the accuracy of the inspection results.

[0053] For scenario one, the analysis module uses the observation results from camera 16 to detect the coaxiality between the central axis of the valve seat through hole and the reference axis 9.

[0054] Ideally, the coaxiality between the valve seat and the reference shaft 9 is 0. At this time, the detection lasers of the two sets of laser measuring instruments 17 irradiate the surface of the valve seat in different directions. By combining the detection data of the two sets of laser measuring instruments 17, the overall shape data of the valve seat can be obtained.

[0055] In the actual testing process, the rotation of the turntable 2 will inevitably cause a coaxiality deviation between the valve seat and the reference shaft 9. When the coaxiality deviation is within the allowable error range, the test data of the two sets of laser measuring instruments 17 are the true shape data, and the valve seat is judged to be qualified at this time.

[0056] When the coaxiality deviation exceeds the allowable error range, the detection data of the two sets of laser measuring instruments 17 will deviate. For example, when the coaxiality deviation exceeds the allowable error range, the valve seat will move closer to one of the sets of laser measuring instruments 17, which will reduce the scanning area of ​​that set of laser measuring instruments 17 and thus create a detection blind zone. At this time, the coaxiality of the valve seat and the reference axis 9 should be adjusted to detect the blind zone.

[0057] Specifically, starting motor 23 drives gear 24 to rotate, gear 24 drives rack 28 to move, rack 28 drives movable block 27 to move towards telescopic rod 32, so that support plate 33 is inserted into through slot 31 (e.g. Figure 12 As shown), at this time, the bottom of the limiting groove 26 provides support for the movable block 27. Further, the telescopic rod 22 is activated, and the telescopic rod 22 pushes the support plate 33 to move upward. The support plate 33 drives the movable block 27 to move upward through the sliding groove 319. During this process, the protective strip 29 moves above the boss 30. Since the gear 24 and the rack 28 form a sliding gear mechanism, the gear 24 and the rack 28 are always in a meshing state when the rack 28 rises with the movable block 27. Since the width of the U-shaped groove of the movable block 27 is greater than the diameter of the main body 7, the main body 7 is inserted into the upper part of the U-shaped groove of the movable block 27. In the first embodiment, the support plate 33 is placed opposite each other. The seat 6 provides support, and part of the shaft of the main body 7 is located inside the placement opening 3. Since the diameter of the main body 7 is equal to the width of the sliding groove 4, the motor 23 is started, causing the rack 28 to move away from the turntable 2. The lower end face of the protective strip 29 is in contact with the upper end face of the boss 30, and the boss 30 provides support for the protective strip 29, thereby supporting and limiting the movable block 27. Since the upper part of the U-shaped groove opening of the movable block 27 is closed, the closed movable block 27 drives the main body 7 to leave the placement opening 3 and move away from the turntable 2 along the sliding groove 4 and the sliding groove 13, thereby causing the seat 6 to drive the valve seat to move away from the turntable 2.

[0058] During this process, since the diameter of the main body 7 is equal to the width of the sliding groove 14 and the sliding groove 3 19, and the width of the shoulder 10 is greater than that of the main body 7, the lower surface of the shoulder 10 successively fits against the upper surface of the turntable 2 and the fan plate 18, thereby preventing the placement seat 6 from falling out of each set of sliding grooves until the placement seat 6 moves to the end of the sliding groove 3 19, at which point the reference axis 9 is located directly below the camera 20.

[0059] Start each group of electric push rods 34. The output end of the electric push rod 34 extends outward. The output end of each group of electric push rods 34 pushes the valve seat from different angles. The camera 20 ensures that each group of electric push rods 34 pushes the valve seat to a position coaxial with the reference axis 9.

[0060] After completing the coaxiality adjustment, camera 321 is activated to inspect the valve seat, thereby eliminating the blind spot in Example 1 and improving the inspection accuracy.

[0061] For scenario two: Use electric push rod 34, camera two 20 and camera three 21 to adjust the coaxiality.

[0062] The principle of coaxiality adjustment is the same as that of Case 1 above. When a defect is detected in the shape, the type of defect is double-verified based on the test result of the valve seat weight, which further improves the accuracy of the test.

[0063] Specifically, if the actual weight of the valve seat is greater than the standard value, and the valve seat is damaged, it indicates that the density of the raw material used in the valve seat production is too high, and the transportation process caused the valve seat surface to be concave. If the valve seat has a convex structure, it indicates that the valve seat was not processed properly in the grinding and cutting process, and the grinding and cutting process should be adjusted.

[0064] When the actual weight of the valve seat is less than the standard value, if the valve seat is damaged, it means that the valve seat has been excessively worn due to the cutting and grinding process. If the valve seat has a bulging structure, it means that gas was trapped in the valve seat during the production process and could not be discharged, resulting in a local bulge at that location.

[0065] Based on scenario two, if the appearance is deemed acceptable after adjusting the coaxiality, it indicates that there is a certain density difference in the raw materials used to produce the valve seat, or that there are air holes or foreign objects inside the valve seat. In such cases, the production process or the selection of raw materials should be optimized and adjusted.

[0066] The detection components not only enable the inspection of the valve seat's external structure, but also allow for the further identification of the type of defect by combining the valve seat's weight and external shape data, and preliminarily pinpoint the link that caused the defect, thereby further improving the efficiency of process maintenance.

[0067] Example 3: In the case of valve seat shape inspection failure, adjust the coaxiality to eliminate misjudgment caused by position failure.

[0068] Regarding scenario three, the weight is within acceptable limits, ruling out differences in raw material density, acceptable grinding and cutting processes, and acceptable processing steps. This indicates that the valve seat was subjected to external impact during transportation, leading to plastic deformation.

[0069] Specifically, the coaxiality is adjusted. The principle of coaxiality adjustment is the same as that in Embodiment 2. After the coaxiality adjustment is completed, the defects on the valve seat surface are detected. Cameras 3 and 21 at different positions divide the valve seat surface into different areas and confirm the specific location of the shape defect. By combining the location of the shape defect with the specific operation process in the transportation process, the specific cause of damage can be determined. For example, if camera 3 and 21 detects a dent on the valve seat surface, it indicates that the clamp in the transportation process has caused damage to the valve seat surface. By accurately tracking the specific location of the dent, the specific clamp that caused the damage can be identified, thereby effectively reducing maintenance costs and improving maintenance efficiency.

[0070] In case four, where the valve seat's shape and weight are both substandard, it indicates a systemic defect in the valve seat's production process. By using detection components and linking multiple sets of data, the specific cause of the defect can be identified.

[0071] Specifically, the telescopic rod 32 is used to allow the pressure detection module to repeatedly measure the actual weight of the valve seat, and after further adjusting the coaxiality, the type of valve seat shape defect is detected.

[0072] The analysis module calculates the actual volume of the valve seat based on the shape data of camera 321 and camera 220, and calculates the actual density of the valve seat by combining the actual weight of the valve seat, and compares it with the standard value.

[0073] If the actual density is greater than the standard value, it indicates that the raw material density exceeds the standard and foreign matter is mixed in during production.

[0074] If the actual density is less than the standard value, it indicates that the raw material density is insufficient and gas is trapped in the casting process, forming internal voids.

[0075] Furthermore, if the density is within acceptable limits, it indicates that there are defects in the cutting and grinding processes of the valve seat.

[0076] Example 4: The analysis module integrates the detection information of the weight non-compliance in Example 2 with the density information in Example 3. Based on the weight deviation value of the valve seat, different deviations are divided into slight deviation, moderate deviation and severe deviation. Under the existing technology, the allowable weight deviation value of valve seats of different volumes is different. Therefore, the deviation is divided according to the actual valve seat type.

[0077] Specifically, the analysis module controls the detection components to detect the valve seat surface based on the deviation level of the valve seat.

[0078] For minor deviations, the key points for defect inspection of the detection components are the density fluctuation of the raw material and the polishing condition of the valve seat surface. If there are scratches on the valve seat surface, it indicates that the valve seat has been polished too much, resulting in weight deviation. If there is no damage to the surface, it indicates that the problem is the density fluctuation of the raw material.

[0079] For cases with moderate deviation, the focus of defect inspection of the detection components is on the machining of the valve seat. If there are slight protrusions and depressions on the surface of the valve seat, it indicates that the machining process has caused damage to the valve seat.

[0080] In cases of severe deviation, the focus of the investigation should be on pores or impurities inside the valve seat. If no structural defects are detected on the surface of the valve seat, it indicates that there are air bubbles or foreign objects inside the valve seat.

[0081] By combining the valve seat surface area division in Example 3, the surface defects of the valve seat can be traced back to the specific production process, thereby improving the accuracy and efficiency of detection.

[0082] The defects of the valve seat are further classified by the weight deviation value, and the different deviation conditions are targeted for key inspection, which further improves the inspection efficiency. By alternating the verification with the results of Example 2 and Example 3, not only is the accuracy of the inspection results improved, but the type of defect can also be more intuitively judged, thereby saving inspection costs.

[0083] By utilizing detection components and analysis modules to comprehensively analyze the shape, weight, and position information of valve seats, efficient and accurate detection of automotive sensor valve seats can be achieved, and the causes of defects can be reasonably inferred, further improving production efficiency.

[0084] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0085] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detection device for automotive sensor valve seats, comprising a base (1), a transfer assembly, a detection assembly, and an analysis module, characterized in that: The transfer assembly includes a turntable (2) and a motor. The detection assembly includes a detection box (12), which is fixedly connected to the base (1). The detection box (12) is located below the turntable (2). A through sliding groove (13) is provided at the upper end of the detection box (12). A frame (22) is provided inside the detection box (12). A motor (23) is fixedly installed at the top of the frame (22). The output end of the motor (23) faces the sliding groove (13) and... A gear (24) is fixedly connected to the top of the frame (22), and a limiting seat (25) is fixedly connected to the top of the limiting seat (25). A limiting groove (26) is opened at the upper end of the limiting seat (25). A movable block (27) is slidably connected inside the limiting groove (26). Multiple sets of racks (28) and protective strips (29) are respectively installed on the two sides of the outside of the movable block (27). The combined width of the multiple sets of racks (28) is much larger than the thickness of the gear (24). The racks (28) mesh with the gear (24) to form a sliding gear mechanism. The movable block (27) has a U-shaped structure. The U-shaped opening of the movable block (27) faces the turntable (2). A through groove (31) is provided in the upper part of the movable block (27). The through groove (31) divides the movable block (27) into upper and lower parts. The opening end of the upper part of the U-shaped groove of the movable block (27) is closed. A telescopic rod (32) is installed inside the limiting groove (26). The telescopic rod (32) is located on the opening side of the movable block (27). The output end of the telescopic rod (32) faces the turntable (2) and is fixedly installed with a support plate (33). A pressure detection module is installed inside the support plate (33). The upper end of the turntable (2) is evenly provided with several through placement openings (3). On the side of the placement opening (3) away from the center of the turntable (2), a sliding groove (4) is provided through the turntable (2). The width of the sliding groove (4) is smaller than the diameter of the placement opening (3). Observation openings (5) are symmetrically provided on both sides of the placement opening (3) through the turntable (2). A placement seat (6) is provided inside the placement opening (3). The upper end of the test box (12) is fixedly installed with a telescopic rod (14), and the output end of the telescopic rod (14) is fixedly installed with a test plate (15). The test plate (15) is located above both the turntable (2) and the test box (12). A camera (16) is installed on the detection plate (15) above the turntable (2). The observation direction of the camera (16) is towards the turntable (2). Laser measuring instruments (17) are symmetrically arranged on both sides of the camera (16). The laser measuring instruments (17) are fixedly connected to the detection plate (15). An arc-shaped fan plate (18) is fixedly connected to the top of the detection box (12). The arc-shaped edge of the fan plate (18) is complementary to the shape of the turntable (2). A through sliding groove three (19) is opened at the upper end of the fan plate (18). The width of the sliding groove three (19) is the same as the width of the sliding groove one (4). Two sets of cameras (20) are symmetrically installed on the upper end of the fan plate (18). The observation directions of the two sets of cameras (20) are opposite. A third camera (21) is set directly above the center point of the two sets of cameras (20). The third camera (21) is fixedly connected to the detection plate (15).

2. The detection device for automotive sensor valve seats according to claim 1, characterized in that: The fixed body of the turntable (2) is fixedly connected to the base (1), and the output end of the motor is fixedly connected to the turntable (2).

3. The detection device for automotive sensor valve seats according to claim 2, characterized in that: The placement seat (6) includes a cylindrical body (7), a placement platform (8) is installed on one side of the top of the body (7), a reference shaft (9) is installed on the top of the placement platform (8), a shoulder (10) is provided on a section of the body (7) located on the placement platform (8) away from the reference shaft (9), and a limiting platform (11) is installed on a section of the body (7) away from the shoulder (10).

4. The detection device for automotive sensor valve seats according to claim 3, characterized in that: The diameter of the placement platform (8) is greater than that of the placement opening (3), the diameter of the shoulder (10) is equal to that of the placement opening (3), the diameter of the main body (7) is equal to the width of the sliding groove (4), and the diameter of the limiting platform (11) is greater than that of the placement opening (3).

5. The detection device for automotive sensor valve seats according to claim 4, characterized in that: The limiting groove (26) has a boss (30) on the side near the protective strip (29) inside, and the width between the two U-shaped side walls of the movable block (27) is greater than the diameter of the main body (7).

6. The detection device for automotive sensor valve seats according to claim 5, characterized in that: Several sets of electric push rods (34) are uniformly fixedly installed on the upper end of the fan plate (18). The output ends of each set of electric push rods (34) intersect, and the intersection point coincides with the center point between the two sets of cameras (20).

Images