Size detection device for rubber sealing O-shaped ring

Abstract

The utility model provides a rubber sealing O-shaped ring size detection device. The rubber sealing O-shaped ring size detection device comprises a sleeve, a measuring mechanism and an elastic stripping piece. The inner diameter of the sleeve is gradually reduced from top to bottom and is conical; the measuring mechanism comprises a conical barrel, a telescopic piece and a supporting column; an inner cavity for containing the conical barrel is formed in the bottom of the supporting column from bottom to top, the large-diameter end of the conical barrel is located in the inner cavity of the supporting column, the small-diameter end of the conical barrel is located outside the inner cavity, and scale marks are arranged on the peripheral face of the conical barrel; the fixed end of the telescopic piece is installed on the supporting column, and the movable end faces downwards and is connected with the conical barrel. The two elastic stripping pieces are horizontally mounted at the bottom of the supporting column, and the movable ends of the two elastic stripping pieces are attached to the peripheral face of the conical barrel for longitudinal displacement adjustment. Through precise cooperation of the conical cylinder and the sleeve, the internal and external diameter synchronous detection function is realized, the whole structure is simple, the cost is low, and the device is suitable for verification and process sampling inspection of a multi-variety and small-batch production line.

Description

Technical Field

[0001] This utility model relates to the field of rubber ring size detection, and in particular to a device for detecting the size of rubber sealing O-rings. Background Technology

[0002] For the inspection of rubber O-ring dimensions, early methods commonly used manual visual inspection combined with caliper measurement, which suffered from low efficiency and large subjective errors. Currently, machine vision-based inspection systems are widely adopted. Through rotating stage positioning, multi-angle image acquisition, and algorithm analysis, these systems can efficiently complete the full inspection of dimensional tolerances (inner diameter / outer diameter / wire diameter) and surface defects (cracks, burrs, impurities, etc.). However, such equipment is expensive and difficult to maintain. For small-scale processors, the high cost of purchasing such equipment is mismatched with their production capacity needs, necessitating a simple, low-cost, and easy-to-operate and maintain inspection device. Utility Model Content

[0003] Therefore, it is necessary to provide a rubber O-ring size detection device to address the problems of high cost and difficult maintenance of existing testing equipment.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] The rubber O-ring size detection device mainly includes a sleeve, a measuring mechanism, and an elastic stripper.

[0006] The diameter of the sleeve gradually decreases from top to bottom, forming a cone shape;

[0007] The measuring mechanism includes a conical cylinder, a telescopic component, and a support column; the bottom of the support column has an inner cavity from bottom to top to accommodate the conical cylinder, with the larger diameter end of the conical cylinder located inside the inner cavity of the support column and the smaller diameter end located outside the inner cavity, and scale lines are provided on the outer circumference of the conical cylinder; the fixed end of the telescopic component is installed on the support column, and the movable end faces downward and is connected to the conical cylinder;

[0008] Two elastic stripper components are horizontally installed at the bottom of the support column, with their movable ends in contact with the outer circumferential surface of the tapered cylinder for longitudinal displacement adjustment.

[0009] Furthermore, the telescopic component includes a telescopic cylinder and a connecting rod; the top of the conical cylinder is fixedly connected to the connecting rod; the movable end of the telescopic cylinder is fixedly connected to the connecting rod, and the fixed end is fixedly connected to the support column.

[0010] Furthermore, the elastic stripper includes a fixed sleeve, a movable rod, a spring, and a contact block; the fixed sleeve is fixedly installed at the bottom of the support column, the movable rod passes through the fixed sleeve, the part of the movable rod inside the fixed sleeve extends radially outward to form a limiting protrusion, the two ends of the fixed sleeve extend radially inward to form limiting blocks, and a spring is provided between the limiting protrusion and the limiting block away from the conical cylinder; the contact block is provided at the end of the movable rod near the conical cylinder, the inner side of the contact block is inclined and fits against the outer surface of the conical cylinder.

[0011] Furthermore, the internal dimensions of the sleeve are larger than those of the tapered cylinder, the inner diameter of the sleeve end with the smaller diameter is smaller than the outer diameter of the O-ring, and the outer diameter of the sleeve end with the larger diameter is larger than the outer diameter of the O-ring.

[0012] Furthermore, an opening for observing the O-ring is provided in the middle section of the sleeve surface.

[0013] Furthermore, a reference line for referencing the O-ring size is provided on the outer periphery of the sleeve and near the opening.

[0014] Furthermore, a robotic arm is connected to the top of the support column for moving the support column to a horizontal position.

[0015] Furthermore, miniature cameras are installed at the bottom center of both the conical cylinder and the bottom center of the sleeve.

[0016] Furthermore, the sleeve has at least three openings, and two cylinder grippers are slidably arranged on the outer circumferential surface of the sleeve, with the movable ends of the two cylinder grippers corresponding to two of the openings.

[0017] Furthermore, the sleeve has at least three openings, and two miniature cylinders are slidably arranged on the outer circumferential surface of the sleeve. The movable ends of the two miniature cylinders are located in two of the openings. The movable ends of the miniature cylinders are provided with concave arc surfaces, and the inner arc surfaces are provided with limiting grooves that are adapted to the thickness of the O-ring.

[0018] Compared with the prior art, the beneficial effects of this utility model include:

[0019] 1. Through the precise fit between the tapered cylinder and the sleeve, the inner and outer diameters can be detected simultaneously. The tapered cavity inside the sleeve serves as the outer diameter reference surface, which can quickly determine the outer diameter tolerance of the O-ring. The tapered cylinder supports the measurement of the inner diameter. The overall structure is simple and low in cost, making it suitable for verification and process sampling inspection of multi-variety, small-batch production lines.

[0020] 2. An elastic stripper is used to generate continuous contact force during the resetting process of the conical cylinder, ensuring that the O-ring smoothly detaches from the conical cylinder and reducing the possibility of ring deformation. Attached Figure Description

[0021] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0022] Figure 1 This is a perspective view of the rubber O-ring size detection device described in Example 1;

[0023] Figure 2 For based on Figure 1 A front view of the measuring mechanism and the elastic stripper;

[0024] Figure 3 A three-dimensional view of the measuring mechanism and the elastic stripper;

[0025] Figure 4 This is a schematic diagram of the internal structure of the elastic stripper.

[0026] Labels in the diagram: 1. Sleeve; 2. Measuring mechanism; 21. Conical cylinder; 22. Telescopic component; 221. Telescopic cylinder; 222. Connecting rod; 23. Support column; 3. Elastic stripper; 31. Fixed sleeve; 32. Movable rod; 33. Spring; 34. Adhesive block. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] like Figure 1 As shown, the rubber O-ring size detection device mainly includes a sleeve 1, a measuring mechanism 2, and an elastic stripper 3.

[0029] The sleeve 1 has a tapered shape with its diameter gradually decreasing from top to bottom. A support rod is located on the outer periphery of the sleeve 1 to support it. The maximum inner diameter at the top of the sleeve 1 exceeds the outer diameter of the O-ring, while the minimum inner diameter at the bottom forms a limiting notch. A ring-shaped array of openings is formed in the middle section of the outer wall, with reference lines marked to match the standard O-ring. These openings allow observation of the O-ring, and the outer diameter of the O-ring can be determined using the reference lines.

[0030] In this embodiment, the sleeve 1 has at least three openings, and two cylinder grippers are slidably disposed on the outer circumferential surface of the sleeve 1. The movable ends of the two cylinder grippers are located in two of the openings. The cylinder grippers can move horizontally and extend and retract vertically. After the O-ring is placed inside the sleeve 1, when it is necessary to limit the O-ring, the cylinder grippers hold the O-ring to position and clamp it, making it convenient to cooperate with the measuring mechanism 2 and fit onto the tapered cylinder 21 of the measuring mechanism 2. Whether to install cylinder grippers is selected according to actual needs.

[0031] like Figure 2 and Figure 3 As shown, the measuring mechanism 2 mainly includes a conical cylinder 21, a telescopic component 22, and a support column 23. The bottom of the support column 23 has an inner cavity from bottom to top to accommodate the conical cylinder 21. The inner cavity is preferably cylindrical and can accommodate the maximum diameter of the conical cylinder 21. The diameter of the conical cylinder 21 gradually decreases from top to bottom. Most of the conical cylinder 21 is located inside the inner cavity of the support column 23, with its bottom end outside the inner cavity. Graduation lines are provided on the outer circumference of the conical cylinder 21. The size of the conical cylinder 21 is smaller than the internal size of the sleeve 1, and the size difference between the conical cylinder 21 and the sleeve 1 creates a layered detection space. High-precision miniature cameras are installed at the bottom of both conical cylinders to achieve synchronous image acquisition. The miniature cameras are industrial cameras and can identify defects on the surface of the O-ring based on the acquired images.

[0032] The telescopic component 22 mainly includes a telescopic cylinder 221 and a connecting rod 222. The fixed end of the telescopic cylinder 221 is fixedly connected to the support column 23, and the movable end is located inside the cavity of the support column 23 and fixedly connected to the connecting rod 222. The connecting rod 222 is fixedly connected to the top of the conical cylinder 21. The millimeter-level lifting and lowering of the conical cylinder 21 is achieved by driving the connecting rod 222 through the telescopic cylinder 221. In this embodiment, two telescopic cylinders 221 drive the connecting rod, that is, a hole can be opened on the side of the support column 23, and the end of the connecting rod 222 is located outside the support column 23 and connected to the movable end of the telescopic cylinder 221. A robot arm for transferring the horizontal position of the support column 23 is connected to the top of the support column 23. The sleeve 1 is placed at the discharge end for conveying O-rings. In order to avoid the measuring mechanism 2 affecting the conveying of O-rings, the measuring mechanism 2 can be transferred before the O-rings enter the sleeve 1. After the O-rings enter the sleeve 1, the robot arm will transfer the measuring mechanism 2 to directly above the sleeve 1.

[0033] Two elastic stripper elements 3 are horizontally installed at the bottom of the support column 23, such as... Figure 4As shown, the elastic ejector 3 mainly consists of a fixed sleeve 31, a movable rod 32, a spring 33, and a contact block 34. The fixed sleeve 31 is horizontally fixedly installed at the bottom of the support column 23. The movable rod 32 passes through the fixed sleeve 31, and the diameter of the movable rod 32 is smaller than the inner diameter of the fixed sleeve 31. The middle section of the movable rod 32 has a radially outwardly extending limiting protrusion that fits into the inner cavity of the fixed sleeve 31. In addition, both ends of the fixed sleeve 31 have limiting blocks to prevent the limiting protrusion from disengaging from the inner cavity. A spring 33 is provided between the limiting protrusion and the limiting blocks away from the conical cylinder 21 to push the movable rod 32 toward the direction of the conical cylinder 21. The contact block 34 is located at the end of the movable rod 32 that is close to the conical cylinder 21. The inner side of the contact block 34 is inclined and fits into the outer surface of the conical cylinder 21. During the measurement process, it can both assist in positioning and realize automatic reset of the demolding action.

[0034] In practical applications, the O-ring enters the sleeve 1 for initial outer diameter measurement. Then, the robotic arm moves the support column 23 to directly above the sleeve 1. The telescopic cylinder 221 extends, causing the conical cylinder 21 to move downwards, allowing the O-ring to fit over the outer surface of the conical cylinder 21 for inner diameter measurement. Alternatively, a feeding point can be set beside the sleeve 1. The robotic arm moves the support column 23 directly above the feeding point, and then the telescopic cylinder 221 retracts, causing the conical cylinder 21 to move upwards. Under the obstruction of the bonding block 34, the O-ring detaches from the conical cylinder 21, achieving O-ring unloading.

[0035] This embodiment achieves simultaneous detection of inner and outer diameters through the precise fit between the tapered cylinder 21 and the sleeve 1. The sleeve 1 has a built-in tapered cavity as the outer diameter reference surface, which can quickly determine the outer diameter tolerance of the O-ring. The tapered cylinder 21 supports the measurement of the inner diameter. The overall structure is simple and low in cost, making it suitable for verification and process sampling of multi-variety, small-batch production lines.

[0036] Example 2

[0037] This embodiment introduces a rubber O-ring size detection device, which is basically the same in structure as the rubber O-ring size detection device introduced in Embodiment 1. The difference is that the sleeve 1 in this embodiment has at least three openings, and two miniature cylinders are slidably arranged on the outer circumferential surface of the sleeve 1. The moving ends of the two miniature cylinders are located in two of the openings. The moving ends of the miniature cylinders are concave arc surfaces with limiting grooves adapted to the thickness of the O-ring. After the O-ring enters the sleeve 1, the miniature cylinder slides to the O-ring and extends, causing the limiting grooves of the moving ends to engage with the edge of the O-ring, achieving the positioning purpose.

[0038] This embodiment has the same beneficial effects as Embodiment 1.

[0039] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A rubber O-ring size detection device, characterized in that, It includes: The sleeve (1) has a cone shape with its diameter gradually decreasing from top to bottom; The measuring mechanism (2) includes a conical cylinder (21), a telescopic component (22), and a support column (23). The bottom of the support column (23) is provided with an inner cavity for accommodating the conical cylinder (21) from bottom to top. The end of the conical cylinder (21) with a larger diameter is located inside the inner cavity of the support column (23), and the end with a smaller diameter is located outside the inner cavity. The outer circumferential surface of the conical cylinder (21) is provided with scale lines. The fixed end of the telescopic component (22) is installed on the support column (23), and the movable end faces downward and is connected to the conical cylinder (21). Two elastic stripper parts (3) are horizontally installed at the bottom of the support column (23), and their movable ends are in contact with the outer circumferential surface of the tapered cylinder (21) for longitudinal displacement adjustment.

2. The rubber O-ring size detection device according to claim 1, characterized in that, The telescopic component (22) includes a telescopic cylinder (221) and a connecting rod (222); the top of the conical cylinder (21) is fixedly connected to the connecting rod (222); the movable end of the telescopic cylinder (221) is fixedly connected to the connecting rod (222), and the fixed end is fixedly connected to the support column (23).

3. The rubber O-ring size detection device according to claim 1, characterized in that, The elastic stripper (3) includes a fixed sleeve (31), a movable rod (32), a spring (33), and a fitting block (34); the fixed sleeve (31) is fixedly installed at the bottom of the support column (23), the movable rod (32) passes through the fixed sleeve (31), the part of the movable rod (32) located inside the fixed sleeve (31) extends radially outward to form a limiting protrusion, the two ends of the fixed sleeve (31) extend radially inward to form limiting blocks, and a spring (33) is provided between the limiting protrusion and the limiting block away from the conical cylinder (21); the fitting block (34) is located at one end of the movable rod (32) near the conical cylinder (21), the inner side of the fitting block (34) is inclined and fits against the outer surface of the conical cylinder (21).

4. The rubber O-ring size detection device according to claim 1, characterized in that, The internal dimensions of the sleeve (1) are larger than those of the tapered cylinder (21). The inner diameter of the sleeve (1) with a smaller diameter is smaller than the outer diameter of the O-ring, and the outer diameter of the sleeve (1) with a larger diameter is larger than the outer diameter of the O-ring.

5. The rubber O-ring size detection device according to claim 4, characterized in that, The sleeve (1) has an opening in the middle section of its surface for observing the O-ring.

6. The rubber O-ring size detection device according to claim 5, characterized in that, The outer periphery of the sleeve (1) and the area near the opening are provided with reference lines for referencing the size of the O-ring.

7. The rubber O-ring size detection device according to claim 1, characterized in that, The top of the support column (23) is connected to a robotic arm for moving the horizontal position of the support column (23).

8. The rubber O-ring size detection device according to claim 1, characterized in that, Miniature cameras are installed at the bottom center of both the conical tube (21) and the bottom center of the sleeve (1).

9. The rubber O-ring size detection device according to claim 1, characterized in that, The sleeve (1) has at least three openings, and two cylinder grippers are slidably arranged on the outer circumferential surface of the sleeve (1), with the movable ends of the two cylinder grippers corresponding to two of the openings.

10. The rubber O-ring size detection device according to claim 1, characterized in that, The sleeve (1) has at least three openings. Two miniature cylinders are slidably arranged on the outer circumferential surface of the sleeve (1). The movable ends of the two miniature cylinders are located in two of the openings. The movable ends of the miniature cylinders are provided with concave arc surfaces, and the inner arc surfaces are provided with limiting grooves that are adapted to the thickness of the O-ring.

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