A rubber seal failure detection device

Abstract

The utility model belongs to rubber detection technical field especially, it is a kind of rubber seal failure detection device, to traditional manual detection rubber seal piece inefficiency, easy to fatigue and standard are not one, lead to high rate of missed detection. Single detection mode (such as only vision or only contact measurement) it is difficult to simultaneously accurately identify appearance defect and micro size deviation, lack of automatic feeding and sorting function, restrict the overall efficiency and quality stability of production line problem, present the following scheme, it includes work table, the top of work table is provided with computer controller, the top of work table is rotatably provided with processing seat, the bottom of work table is installed with first servo motor. The utility model integrates automatic feeding, double mode detection and intelligent sorting, realizes efficient flow operation by rotating multi-station design. Visual and laser detection are combined, macro defect identification and micro size accurate measurement are considered.

Description

Technical Field

[0001] This utility model relates to the field of rubber testing technology, and in particular to a rubber seal failure detection device. Background Technology

[0002] A rubber seal is an annular cover composed of one or more parts, fixed to one ring or washer of a bearing and contacting or forming a narrow labyrinth gap with another ring or washer to prevent lubricating oil leakage and foreign object intrusion. During the production process, the sealing performance of rubber seals needs to be tested. Only after the test results meet the standards can they be put into use. However, existing rubber seal sealing performance testing equipment cannot simultaneously test multiple rubber seals, thus reducing the testing speed and affecting the production efficiency of rubber seals.

[0003] Publication (Announcement) No.: CN222866138U relates to the field of rubber sealing ring testing technology, specifically a rubber sealing ring sealing testing device, including a base, a bottom plate welded to the top of the base, multiple bottom grooves welded at equal intervals to the top of the bottom plate, a support frame installed on the top of the base, a top plate welded to the top of the support frame, an electric telescopic rod fixed to the top of the top plate by bolts, a sliding plate installed at the output end of the electric telescopic rod, the output end of the electric telescopic rod penetrating the interior of the top plate, multiple upper grooves installed at equal intervals at the bottom end of the sliding plate, the multiple upper grooves and bottom grooves working together, and the multiple bottom grooves and upper grooves are all hollow.

[0004] Traditional manual inspection of rubber seals is inefficient, prone to fatigue, and inconsistent in standards, resulting in a high rate of missed inspections. Single inspection methods (such as visual or contact measurement only) cannot accurately identify both appearance defects and microscopic dimensional deviations simultaneously, and lack automated loading, unloading, and sorting functions, thus restricting the overall efficiency and quality stability of the production line. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of traditional manual inspection of rubber seals, which is characterized by low efficiency, susceptibility to fatigue, and inconsistent standards, leading to a high rate of missed detections. Single inspection methods (such as visual or contact measurement alone) are insufficient to simultaneously and accurately identify both visual defects and microscopic dimensional deviations, and lack automated loading, unloading, and sorting functions, thus hindering the overall efficiency and quality stability of the production line. Therefore, this invention proposes a rubber seal failure detection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A rubber seal failure detection device includes a worktable, a computer controller mounted on the top of the worktable, a processing seat rotatably mounted on the top of the worktable, a first servo motor mounted on the bottom of the worktable, the output shaft of the first servo motor being fixedly mounted to the bottom of the processing seat, and the output shaft of the first servo motor being rotatably mounted to the worktable via bearings. The top of the processing seat has four detection placement slots. The device also includes: Both the visual inspection mechanism and the laser inspection mechanism are installed on top of the workbench and are used to inspect the rubber. A gripping mechanism, mounted on top of the worktable, is used to transfer rubber; The vibratory feeding mechanism is located on the side of the worktable and is used to guide the rubber into the testing and placement slot.

[0007] Preferably, the vibratory feeding mechanism includes a base, a telescopic motor mounted on the top of the base, a support plate mounted on the output end of the telescopic motor, multiple springs mounted on the top of the support plate, a common diagonal brace mounted on the top of the multiple springs, all of the diagonal braces being inclined, a common vibratory plate mounted on the top of the multiple diagonal braces, a guide bin mounted inclined on the vibratory plate, a vibrator mounted on the bottom of the vibratory plate, a limit cylinder mounted on the guide bin, and the vibrator causing the vibratory plate to vibrate when it operates, with the vibratory plate supported by the multiple springs and diagonal braces.

[0008] Preferably, the visual inspection mechanism includes a first linear motor, which is mounted on the top of the worktable. A first mounting plate is mounted on the output shaft of the first linear motor, and a visual inspection module is mounted on the bottom of the first mounting plate.

[0009] Preferably, the laser detection mechanism includes a second linear motor, which is mounted on the top of the worktable. A second mounting plate is mounted on the output shaft of the second linear motor, and a laser measurement module is mounted on the bottom of the second mounting plate.

[0010] Preferably, the gripping mechanism includes a rotating rod, which is rotatably mounted on the worktable via bearings. A third linear motor is fixedly mounted on the top of the rotating rod, and a fixed plate is mounted on the output shaft of the third linear motor. A telescopic groove is provided on the fixed plate, and a telescopic plate is slidably mounted in the telescopic groove.

[0011] Preferably, the telescopic plate has a strip-shaped hole, and a bidirectional threaded rod is rotatably installed in the strip-shaped hole. Two moving blocks are threadedly connected to the bidirectional threaded rod, and clamping rods are fixedly installed at the bottom of each of the two moving blocks. A stepper motor is installed on the outside of the telescopic plate, and the output shaft of the stepper motor is fixedly installed to the bidirectional threaded rod. An electric cylinder is installed in the telescopic groove, and the output shaft of the electric cylinder is fixedly installed to the telescopic plate. A second servo motor is installed at the bottom of the worktable, and a first gear is installed on the output shaft of the second servo motor. A second gear is installed at the bottom of the rotating rod, and the first gear and the second gear mesh.

[0012] Preferably, a defective product placement table and a finished product placement table are fixedly installed on the side of the workbench.

[0013] The beneficial effects of the rubber seal failure detection device described in this utility model are as follows: 1. High degree of automation and high efficiency: From vibration feeding, automatic positioning, dual-station detection to robot gripping and sorting, the entire process is automated. The rotary four-station processing station allows feeding, vision inspection, laser inspection and gripping to be operated simultaneously, forming a small production line, which greatly improves inspection efficiency and avoids the speed bottleneck and fatigue error of traditional manual operation.

[0014] 2. Comprehensive and accurate testing: Visual inspection: mainly used to detect macroscopic defects in rubber seals, such as surface scratches, cracks, burrs, missing material, contamination, and abnormal shape and contour.

[0015] Laser inspection: mainly used to inspect micro-sizes and morphology, such as the height and width of the sealing lip, the flatness of the sealing surface, and tiny depressions. High-precision dimensional data is obtained through laser ranging or laser contour scanning to determine whether the product is within the tolerance range.

[0016] The two detection methods complement each other, combining qualitative judgment and quantitative measurement to comprehensively determine the failure mode, which greatly improves the accuracy and reliability of detection and avoids missed detection and misjudgment.

[0017] 3. All functional mechanisms (feeding, inspection, gripping, and control) are integrated into a single workbench, maximizing space utilization. The rotary workstation design reduces the long-distance movement of the robotic arm, shortening cycle time. Independent defective / finished product placement stations ensure clear material flow.

[0018] 4. Flexibility and adjustability: The gripper spacing of the gripping mechanism can be flexibly adjusted by a stepper motor and a bidirectional threaded rod, and the rotating rod can change the gripping angle, so that the device can adapt to different specifications of rubber seals within a certain size range, enhancing the versatility of the equipment.

[0019] 5. Stable and reliable feeding: The combination of vibratory feeder and guide hopper is a mature feeding solution in the field of automation. With the help of limit cylinders, it can ensure that rubber parts enter the inspection station in a single, directional and orderly manner, providing a basic guarantee for subsequent automated inspection.

[0020] This utility model integrates automated feeding, dual-mode detection, and intelligent sorting, achieving efficient assembly line operation through a rotating multi-station design. Combining vision and laser detection, it addresses both macroscopic defect identification and precise microscopic dimension measurement, significantly improving detection accuracy and reliability. The overall structure is compact and highly automated, suitable for rapid, non-destructive quality screening of rubber seals. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a rubber seal failure detection device proposed in this utility model; Figure 2 This is a bottom view of the structure of a rubber seal failure detection device proposed in this utility model; Figure 3 This is a schematic diagram of the workbench, defective product placement table, finished product placement table, processing seat, and related parts proposed in this utility model. Figure 4 This is a schematic diagram of the structure of the vibratory feeder, diagonal brace, spring, telescopic motor, and base proposed in this utility model; Figure 5 This is a schematic diagram of the gripping mechanism, the second servo motor, the first gear, the second gear, and related parts proposed in this utility model. Figure 6 This is a structural schematic diagram of the fixing plate, telescopic plate, clamping rod and related parts proposed in this utility model.

[0022] In the diagram: 1. Base; 2. Telescopic motor; 3. Support plate; 4. Vibratory feeder; 41. Diagonal brace; 42. Vibrator; 5. Spring; 6. Guide hopper; 7. Worktable; 8. Processing seat; 81. Inspection placement slot; 9. First linear motor; 10. First mounting plate; 11. Vision inspection module; 12. Second linear motor; 13. Second mounting plate; 14. Laser measurement module; 15. Computer controller; 16. Defective product placement table; 17. Finished product. 18. Placement platform; 19. Gripping mechanism; 10. Rotating rod; 11. Third linear motor; 12. Fixing plate; 13. Telescopic plate; 14. Strip hole; 15. Moving block; 16. Bidirectional threaded rod; 17. Stepper motor; 188. Clamping rod; 19. Telescopic groove; 10. Electric cylinder; 11. First servo motor; 22. Second servo motor; 23. First gear; 24. Second gear; 25. Limit cylinder. Detailed Implementation

[0023] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this embodiment, and not all embodiments.

[0024] Example 1 The following is combined Figures 1-6 This application will be described in further detail.

[0025] A rubber seal failure detection device includes a worktable 7, a vision inspection mechanism, a laser inspection mechanism, a gripping mechanism, and a vibratory feeding mechanism. A computer controller 15 is mounted on the top of the worktable 7. A processing seat 8 is rotatably mounted on the top of the worktable 7. A first servo motor 19 is mounted on the bottom of the worktable 7. The output shaft of the first servo motor 19 is fixedly mounted to the bottom of the processing seat 8 and rotatably mounted to the worktable 7 via bearings. Four detection placement slots 81 are provided on the top of the processing seat 8. The vision inspection mechanism and the laser inspection mechanism are both mounted on the top of the worktable 7 for inspecting the rubber. The gripping mechanism is mounted on the top of the worktable 7 for transferring the rubber. A defective product placement table 16 and a finished product placement table 17 are fixedly mounted on the sides of the worktable 7. The vibratory feeding mechanism is located on the side of the worktable 7 for guiding the rubber into the detection placement slots 81.

[0026] Specifically, the servo motor should be equipped with a braking function to ensure precise positioning and no drift when rotation stops. Its rated torque must be able to overcome the inertial torque of the turntable and workpiece, and the repeatability accuracy is usually required to be ±0.01mm or higher.

[0027] The shape of the test placement groove 81 must match the shape of the rubber part to be tested. It should be made of wear-resistant material (such as tool steel) and hardened. The dimensional tolerances should be strictly controlled to ensure good repeatability of workpiece placement.

[0028] The computer controller 15 serves as the brain of the entire system, integrating industrial computer IPC, motion control card, I / O card, etc.

[0029] In this embodiment, the vibratory feeding mechanism includes a base 1, a telescopic motor 2 is mounted on the top of the base 1, a support plate 3 is mounted on the output end of the telescopic motor 2, multiple springs 5 ​​are mounted on the top of the support plate 3, the same diagonal support rod 41 is mounted on the top of the multiple springs 5, the multiple diagonal support rods 41 are all inclined, the same vibratory plate 4 is mounted on the top of the multiple diagonal support rods 41, a guide bin 6 is mounted on the vibratory plate 4 at an incline, a vibrator 42 is mounted on the bottom of the vibratory plate 4, a limit cylinder 23 is mounted on the guide bin 6, the vibrator 42 works to make the vibratory plate 4 vibrate, and the vibratory plate 4 is supported by the multiple springs 5 ​​and the diagonal support rods 41.

[0030] Specifically, the vibratory feeder 4 has a spiral track and a screening mechanism designed according to the shape of the parts. The vibrator 42 is its power source, usually an electromagnetic vibrator, which generates high-frequency micro-amplitude vibrations through pulsed current, causing the parts to crawl along the track.

[0031] The guide hopper 6 connects the vibratory feeder outlet and the processing seat via a track, typically a linear track. Its angle and width need to be adjusted according to the part dimensions to ensure smooth sliding. A limit cylinder 23, a small, single-acting cylinder, is installed at the end of the guide hopper. Its function is to block material, releasing only one piece at a time, achieving single-piece separation and preventing jamming or double material entry into the workstation.

[0032] The telescopic motor 2 is used to adjust the overall height of the vibratory feeder to adapt to different material guiding requirements or to facilitate maintenance. This is a highlight that reflects the flexibility of the design.

[0033] In this embodiment, the visual inspection mechanism includes a first linear motor 9, which is mounted on the top of the worktable 7. A first mounting plate 10 is mounted on the output shaft of the first linear motor 9, and a visual inspection module 11 is mounted on the bottom of the first mounting plate 10.

[0034] Specifically, the vision inspection module 11 includes an industrial camera (typically a CCD or CMOS area scan camera), a lens (fixed-focus or telecentric lens), and a light source (such as ring light, backlight, coaxial light, etc.). The choice of light source is crucial and directly affects the imaging effect. The camera resolution is selected according to the required inspection accuracy (e.g., 5 million to 20 million pixels).

[0035] In this embodiment, the laser detection mechanism includes a second linear motor 12, which is mounted on the top of the worktable 7. A second mounting plate 13 is mounted on the output shaft of the second linear motor 12, and a laser measurement module 14 is mounted on the bottom of the second mounting plate 13.

[0036] Specifically, the laser measurement module 14 is typically a laser displacement sensor. Its core parameters include measurement range (e.g., ±5 mm), linearity (e.g., ±0.05%FS), resolution (e.g., 0.1 μm), and sampling frequency. High-frequency sampling sensors can even perform laser contour scanning driven by a linear motor, acquiring the contour data of the entire cross-section in one go.

[0037] In this embodiment, the gripping mechanism 18 includes a rotating rod 181, which is rotatably mounted on the worktable 7 via bearings. A third linear motor 182 is fixedly mounted on the top of the rotating rod 181. A fixing plate 183 is mounted on the output shaft of the third linear motor 182. A telescopic groove 1810 is provided on the fixing plate 183, and a telescopic plate 184 is slidably mounted in the telescopic groove 1810.

[0038] In this embodiment, a strip-shaped hole 185 is provided on the telescopic plate 184, and a bidirectional threaded rod 187 is rotatably installed in the strip-shaped hole 185. Two moving blocks 186 are threadedly connected to the bidirectional threaded rod 187, and clamping rods 189 are fixedly installed at the bottom of each of the two moving blocks 186. A stepper motor 188 is installed on the outside of the telescopic plate 184, and the output shaft of the stepper motor 188 is fixedly installed with the bidirectional threaded rod 187. An electric cylinder 1811 is installed in the telescopic groove 1810, and the output shaft of the electric cylinder 1811 is fixedly installed with the telescopic plate 184. A second servo motor 20 is installed at the bottom of the worktable 7, and a first gear 21 is installed on the output shaft of the second servo motor 20. A second gear 22 is installed at the bottom end of the rotating rod 181, and the first gear 21 and the second gear 22 mesh with each other.

[0039] Working principle: When in use, the power supply and computer controller 15 are turned on, and the rubber is placed inside the vibratory plate 4. The vibrator 42 works to make the vibratory plate 4 vibrate. The vibratory plate 4 is supported by multiple springs 5 ​​and diagonal braces 41. The vibration of the vibratory plate 4 guides the rubber into the detection placement groove 81 through the guide bin 6. The limit cylinder 23 limits the rubber so that the rubber can enter the detection placement groove 81 one by one. The first servo motor 19 drives the processing seat 8 to rotate 90 degrees, changing the position of the detection placement groove 81 in the guide bin 6, so that the rubber continues to enter the detection placement groove 81. The rubber is first detected by the vision detection module 11. Then the detection placement groove 81 continues to rotate and move to the bottom of the laser measurement module 14. The laser measurement module 14 performs the first detection of the rubber and receives the detection data from the vision and laser sensors. The image processing algorithm and size determination algorithm are run to comprehensively determine whether the workpiece is "qualified" or "failed". After the inspection is completed, the rubber moves to the bottom of the gripping mechanism 18. The third linear motor 182 drives the two clamping rods 189 to move downward and enter the inspection placement slot 81 through the fixed plate 183 and the telescopic plate 184. The stepper motor 188 drives the bidirectional threaded rod 187 to rotate. The bidirectional threaded rod 187 drives the two clamping rods 189 to move closer to each other through the two moving blocks 186. The two clamping rods 189 clamp the rubber. The second servo motor 20 drives the first gear 21 to rotate. The first gear 21 drives the rotating rod 181 to rotate through the second gear 22. The rotating rod 181 drives the third linear motor 182 to rotate. The angle of gripping the rubber can be adjusted. The defective rubber is placed in the defective product placement table 16 and the finished rubber is placed in the finished product placement table 17.

[0040] Example 2 Example 2 is the same as Example 1 in the rest, except that a cleaning and pre-treatment station is added after the vibratory feeder and before visual inspection. An integrated ion air blower and a miniature vacuum cleaner are used to blow away dust and debris from the surface of the rubber parts, preventing impurities from interfering with visual and laser inspection results and significantly reducing the false judgment rate. All structural shapes, dimensions, and materials included in this application as described in Example 1 can be selected and adjusted to meet specific usage requirements. The accompanying drawings are schematic structural diagrams; the actual dimensions can be appropriately adjusted.

[0041] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and the inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.

Claims

1. A rubber seal failure detection device, comprising a workbench (7), characterized in that, A computer controller (15) is provided on the top of the workbench (7), and a processing seat (8) is rotatably mounted on the top of the workbench (7). A first servo motor (19) is installed on the bottom of the workbench (7). The output shaft of the first servo motor (19) is fixedly installed on the bottom of the processing seat (8). The output shaft of the first servo motor (19) is rotatably installed on the workbench (7) through a bearing. The top of the processing seat (8) is provided with four detection placement slots (81). The workbench (8) also includes: Both the visual inspection mechanism and the laser inspection mechanism are installed on the top of the workbench (7) for inspecting the rubber. A gripping mechanism, mounted on top of the workbench (7), is used to transfer rubber; The vibratory feeding mechanism is set on the side of the workbench (7) and is used to guide the rubber into the test placement groove (81).

2. The rubber seal failure detection device according to claim 1, characterized in that, The vibrating feeding mechanism includes a base (1), a telescopic motor (2) is installed on the top of the base (1), a support plate (3) is installed on the output end of the telescopic motor (2), a plurality of springs (5) are installed on the top of the support plate (3), a common diagonal brace (41) is installed on the top of the plurality of springs (5), the plurality of diagonal braces (41) are all inclined, a common vibrating plate (4) is installed on the top of the plurality of diagonal braces (41), a guide bin (6) is installed on the vibrating plate (4), a vibrator (42) is installed on the bottom of the vibrating plate (4), and a limit cylinder (23) is installed on the guide bin (6).

3. The rubber seal failure detection device according to claim 1, characterized in that, The visual inspection mechanism includes a first linear motor (9), which is mounted on the top of the workbench (7). A first mounting plate (10) is mounted on the output shaft of the first linear motor (9), and a visual inspection module (11) is mounted on the bottom of the first mounting plate (10).

4. The rubber seal failure detection device according to claim 1, characterized in that, The laser detection mechanism includes a second linear motor (12), which is mounted on the top of the worktable (7). A second mounting plate (13) is mounted on the output shaft of the second linear motor (12), and a laser measurement module (14) is mounted on the bottom of the second mounting plate (13).

5. The rubber seal failure detection device according to claim 1, characterized in that, The gripping mechanism (18) includes a rotating rod (181), which is rotatably mounted on the worktable (7) via bearings. A third linear motor (182) is fixedly mounted on the top of the rotating rod (181). A fixed plate (183) is mounted on the output shaft of the third linear motor (182). A telescopic groove (1810) is provided on the fixed plate (183), and a telescopic plate (184) is slidably mounted in the telescopic groove (1810).

6. The rubber seal failure detection device according to claim 5, characterized in that, The telescopic plate (184) has a strip-shaped hole (185), and a bidirectional threaded rod (187) is rotatably installed in the strip-shaped hole (185). Two moving blocks (186) are threadedly connected to the bidirectional threaded rod (187). A clamping rod (189) is fixedly installed at the bottom of each of the two moving blocks (186). A stepper motor (188) is installed on the outside of the telescopic plate (184). The output shaft of the stepper motor (188) is fixedly installed with the bidirectional threaded rod (187). An electric cylinder (1811) is installed in the telescopic groove (1810). The output shaft of the electric cylinder (1811) is fixedly installed with the telescopic plate (184).

7. The rubber seal failure detection device according to claim 5, characterized in that, The bottom of the workbench (7) is equipped with a second servo motor (20), and a first gear (21) is installed on the output shaft of the second servo motor (20). The bottom end of the rotating rod (181) is equipped with a second gear (22), and the first gear (21) meshes with the second gear (22).

8. The rubber seal failure detection device according to claim 1, characterized in that, The workbench (7) is fixedly installed with a defective product placement table (16) and a finished product placement table (17) on its side.

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