Sealing ring detection clamp and sealing ring detection equipment

Abstract

The utility model relates to the technical field of detection equipment, particularly provides a sealing ring detection clamp and sealing ring detection equipment, and aims to solve the problem of low accuracy of detecting whether a sealing ring has cracks or not by using the sealing ring detection equipment in the prior art. In order to achieve the purpose, the sealing ring detection clamp comprises a base; the multiple positioning columns are installed on the base and are arranged between the positioning columns in the mode that the sealing ring can be arranged between the positioning columns in a radial deformation mode. After the sealing ring radially deforms, the crack can be expanded, so that the crack is fully exposed, the sealing ring is arranged between the positioning columns and radially deforms, and then whether the crack exists in the sealing ring is detected, so that the crack detection accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, and specifically provides a sealing ring detection fixture and sealing ring detection equipment. Background Art

[0002] The seals currently used in lithium-ion batteries are relatively small and thin. They are loaded manually or robotically before transportation or assembly. During transportation or loading, some seals are squeezed and deformed, causing some to crack. If cracked seals are not identified and assembled into the battery's top cover, some of these top covers will be detected during the airtightness test, resulting in poor airtightness and affecting the yield of the top cover. Some top covers, due to small cracks in the seals, are not detected during the airtightness test, leading to the production of defective battery cells. The gradual failure of the seals in defective battery cells during use can also pose a safety risk. Therefore, seal inspection equipment is needed to detect cracks in the seals before assembly, preventing defective seals from entering the assembly process, improving product yield, and ultimately improving battery cell safety.

[0003] When existing sealing ring detection equipment detects whether there are cracks in the sealing ring, some cracks cannot be detected, which affects the accuracy of the detection results. Utility Model Content

[0004] The utility model aims to solve the above technical problem, that is, to solve the problem in the prior art that the sealing ring detection equipment has low accuracy in detecting whether the sealing ring has cracks.

[0005] In a first aspect, the utility model provides a sealing ring detection fixture, which includes: a base; and a plurality of positioning posts, which are mounted on the base and configured to enable the sealing ring to be radially deformed and disposed between the positioning posts.

[0006] When the above technical solution is adopted, the crack can be enlarged after the sealing ring is radially deformed, thereby fully exposing the crack. Therefore, by placing the sealing ring between the positioning posts and generating radial deformation, and then detecting whether the sealing ring has cracks, the accuracy of crack detection can be improved.

[0007] In a specific embodiment of the above-mentioned sealing ring detection fixture, a plurality of mounting holes are provided on the top surface of the base, the bottom of each positioning column is installed in the corresponding mounting hole, and the plurality of mounting holes are arranged at equal intervals along the length direction, width direction and diagonal direction of the base.

[0008] When the above technical solution is adopted, the positioning column can be installed in a suitable mounting hole according to the size and shape of the sealing ring, so that the sealing ring can produce radial deformation after installation, thereby fully exposing the crack.

[0009] In a specific embodiment of the sealing ring detection fixture, the positioning column and the mounting hole are interference fit.

[0010] When the above technical solution is adopted, the interference fit between the positioning post and the mounting hole can make the positioning post more firmly fixed, preventing the positioning post from loosening or falling out during detection.

[0011] In a specific embodiment of the above-mentioned sealing ring detection fixture, the positioning column includes a first positioning column, a second positioning column, a third positioning column and a fourth positioning column, the first positioning column and the second positioning column are arranged along the width direction of the base, and the third positioning column and the fourth positioning column are arranged along the length direction of the base; the center distance between the first positioning column and the second positioning column is n×d2, and the center distance between the third positioning column and the fourth positioning column is m×d2, wherein d2 is the center distance between two adjacent mounting holes arranged along the length direction and width direction of the base, and the diameter of the positioning column is d1; when the sealing ring is a circular sealing ring, n×d2 and m×d2 satisfy: n×d2-d1≤0.6×D1 and 0.7×D2≤m×d2+d1≤0.9×D2; wherein D1 is the outer diameter of the circular sealing ring, and D2 is the inner diameter of the circular sealing ring; and / or when the sealing ring is a square sealing ring, n×d2 and m×d2 satisfy: 0.5×W1≤n×d2-d1≤0.9×W1 and 0.5×L1≤m×d2-d1≤0.9×L1; wherein W1 is the outer ring width of the square sealing ring, and L1 is the outer ring length of the square sealing ring.

[0012] When the above technical solution is adopted, the positioning columns are arranged so that when testing a circular sealing ring, the deformation of the installed circular sealing ring is appropriate, so that the cracks can be fully exposed while the sealing ring will not be excessively deformed due to clamping reasons; the positioning columns are arranged so that when testing a square sealing ring, the deformation of the installed square sealing ring is appropriate, so that the cracks can be fully exposed while the sealing ring will not be excessively deformed due to clamping reasons.

[0013] Furthermore, the base is a metal base.

[0014] Furthermore, the positioning column is a wooden positioning column or a plastic positioning column.

[0015] Furthermore, the arrangement of the mounting holes satisfies: d3=1.5×d2; wherein d2 is the distance between the centers of two adjacent mounting holes arranged along the length and width directions of the base, and d3 is the distance between the centers of two adjacent mounting holes arranged along the diagonal direction of the base.

[0016] Furthermore, the height of the positioning column satisfies: h3=1.5×h1+h4 or h4≤h3≤2h1+h4; wherein h3 is the height of the positioning column, h1 is the depth of the mounting hole, and h4 is the thickness of the sealing ring.

[0017] In a second aspect, the utility model also provides a sealing ring detection fixture, which includes: a first mounting member; a second mounting member, the sealing ring is configured to be arranged between the first mounting member and the second mounting member; and an extrusion structure, the extrusion structure is configured to reduce the distance between the first mounting member and the second mounting member so that the sealing ring can be subjected to an extrusion force in a radial direction.

[0018] When the above technical solution is adopted, the sealing ring will produce radial deformation when subjected to the extrusion force in the radial direction, which can expand the crack and fully expose the crack. Therefore, by reducing the distance between the first mounting part and the second mounting part to cause the sealing ring to produce radial deformation, and then detecting whether the sealing ring has cracks, the accuracy of crack detection can be improved.

[0019] In a specific embodiment of the sealing ring detection fixture, the sealing ring detection fixture further includes a moving structure, which is used to drive the first mounting member and / or the second mounting member to move parallel to and relative to each other in a radial plane of the sealing ring.

[0020] When the above technical solution is adopted, when the sealing ring is inspected, when an extrusion force is applied to the sealing ring, a certain friction force will be generated between the sealing ring and the first mounting member and the second mounting member. At this time, under the action of the moving structure, relative movement occurs between the first mounting member and the second mounting member, and the sealing ring rotates under the action of the friction force, thereby being able to expose cracks at various positions on the entire circle of the sealing ring, further improving the accuracy of crack detection.

[0021] In a specific embodiment of the sealing ring detection fixture, a first groove is provided on the first mounting member, and a second groove is provided on the second mounting member. The first groove and the second groove are respectively provided on opposite end surfaces of the first mounting member and the second mounting member.

[0022] When adopting the above technical solution, one end of the sealing ring is placed in the first groove and the opposite end is placed in the second groove. This can prevent the sealing ring from moving axially when the sealing ring is squeezed, and can also provide guidance for the sealing ring when the sealing ring is driven to rotate.

[0023] In a specific embodiment of the sealing ring detection fixture, a plurality of first grooves are provided, and the first grooves are arranged parallel to each other. A plurality of second grooves are provided, and the second grooves are arranged in a one-to-one correspondence with the first grooves.

[0024] When the above technical solution is adopted, by providing a plurality of first grooves and a plurality of second grooves, it is possible to detect a plurality of sealing rings at the same time, thereby improving the detection efficiency.

[0025] In a specific embodiment of the above-mentioned sealing ring detection fixture, the distance reduction between the first mounting member and the second mounting member satisfies the following conditions: 0.4×D1≤△H1≤0.6×D1; wherein, △H1 is the distance reduction between the first mounting member and the second mounting member when the sealing ring is a circular sealing ring, and D1 is the outer diameter of the circular sealing ring; and / or the distance reduction between the first mounting member and the second mounting member satisfies the following conditions: 0.4×W1≤△H2≤0.6×W1, 0.4×L1≤△H3≤0.6×L1; wherein, △H2 is the distance reduction between the first mounting member and the second mounting member when the wide side of the square sealing ring is perpendicular to the first mounting member when the sealing ring is a square sealing ring, △H3 is the distance reduction between the first mounting member and the second mounting member when the long side of the square sealing ring is perpendicular to the first mounting member, W1 is the outer ring width of the square sealing ring, and L1 is the outer ring length of the square sealing ring.

[0026] When the above technical solution is adopted, the distance reduction is set so that when the sealing ring is inspected, the deformation of the sealing ring is appropriate, which can fully expose the cracks while not causing excessive deformation of the sealing ring due to clamping reasons, thereby avoiding the sealing ring from failing due to deformation and affecting normal use.

[0027] Furthermore, the extrusion structure includes a first slide rail and a first slider, the first slider is movably connected to the first slide rail, and the first slider is connected to the first mounting member.

[0028] Furthermore, the movable structure includes a second slide rail and a second slider, the second slider is movably connected to the second slide rail, and the second slider is connected to the second mounting member.

[0029] Furthermore, the width of the groove satisfies: 1.2×T1≤W4≤1.5×T1; wherein W4 is the width of the groove, and T1 is the thickness of the sealing ring.

[0030] In a third aspect, the present invention further provides a sealing ring detection device, which includes the sealing ring detection fixture.

[0031] When the above technical solution is adopted, the sealing ring is clamped on the sealing ring detection fixture, which can fully expose the cracks and improve the detection accuracy of the sealing ring detection equipment.

[0032] Compared with the existing technology, the beneficial effect of the sealing ring detection fixture provided by the utility model is: by clamping the sealing ring, the sealing ring is radially deformed, the cracks are fully exposed, and then the sealing ring is detected to see if there are cracks, thereby improving the accuracy of crack detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0034] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the sealing ring detection fixture of the present invention;

[0035] Figure 2 This is a schematic diagram of the first embodiment of the sealing ring detection fixture of the present invention in use;

[0036] Figure 3 It is a structural schematic diagram of the base of the utility model;

[0037] Figure 4 yes Figure 3 AA cross-sectional structural diagram;

[0038] Figure 5 This is a schematic diagram of the overall structure of the second embodiment of the sealing ring detection fixture of the present invention;

[0039] Figure 6 This is a schematic diagram of the second embodiment of the sealing ring detection fixture of the present invention in use;

[0040] Figure 7 It is a structural schematic diagram of the first mounting member of the utility model;

[0041] Figure 8 It is a structural schematic diagram of the first mounting member of the utility model from another angle.

[0042] Reference numerals:

[0043] 1-base, 2-positioning column, 3-first mounting piece, 4-second mounting piece, 5-sealing ring, 11-mounting hole, 21-first positioning column, 22-second positioning column, 23-third positioning column, 24-fourth positioning column, 31-first groove, 41-second groove. DETAILED DESCRIPTION

[0044] Some embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely intended to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art may adjust these embodiments as needed to suit specific applications.

[0045] It should be noted that, in the description of the present invention, terms such as "center", "up", "down", "left", "right", "front", "back", "top", "bottom", "vertical", "horizontal", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the relevant devices or components must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. In addition, ordinal numbers such as "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0047] Based on the problem pointed out in the background technology that the sealing ring detection equipment in the existing technology has low accuracy in detecting whether the sealing ring has cracks, the purpose is to clamp the sealing ring to cause radial deformation of the sealing ring, fully expose the cracks, and then detect whether the sealing ring has cracks, thereby improving the accuracy of crack detection.

[0048] The sealing ring detection equipment of the present invention includes a sealing ring detection fixture, which is used to clamp the sealing ring; the sealing ring detection equipment can also include a CCD camera, which is arranged at the outer periphery of the sealing ring. The CCD camera is used to obtain image information of the sealing ring and transmit the image information to the control system for automatic analysis, or transmit the image information to a display for viewing by detection personnel, so as to detect whether there are cracks in the sealing ring.

[0049] See first Figure 1-Figure 4 , Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the sealing ring detection fixture of the present invention. Figure 2This is a schematic diagram of the use state of the first embodiment of the sealing ring detection fixture of the utility model. Figure 3 This is a structural diagram of the base of the utility model. Figure 4 yes Figure 3 AA cross-sectional structure diagram. Figure 1-Figure 4 As shown, as a possible embodiment, the sealing ring detection fixture includes a base 1 and a plurality of positioning columns 2, the plurality of positioning columns 2 are installed on the base 1, and are arranged to enable the sealing ring 5 to be radially deformed and arranged between the positioning columns 2; since the cracks can be enlarged after the sealing ring 5 is radially deformed, thereby fully exposing the cracks, the sealing ring 5 is arranged between the positioning columns 2 and radially deformed, and then the sealing ring 5 is detected to see if there are cracks, which can improve the accuracy of crack detection.

[0050] Specifically, the top surface of the base 1 is provided with a plurality of mounting holes 11. The bottom of each positioning post 2 is mounted in a corresponding mounting hole 11, and the plurality of mounting holes 11 are arranged at equal intervals along the length, width, and diagonal directions of the base 1. The positioning post 2 can be installed in a mounting hole 11 in an appropriately positioned position according to the size and shape of the sealing ring 5. This allows the sealing ring 5 to undergo radial deformation after installation, thereby fully exposing any cracks. Furthermore, the positioning post 2 and the mounting hole 11 form an interference fit. This interference fit between the positioning post 2 and the mounting hole 11 can further securely fix the positioning post 2, preventing the positioning post 2 from loosening or falling out during testing.

[0051] Possibly, the base 1 is a metal base, and the positioning column 2 is a wooden positioning column or a plastic positioning column. The positioning column 2 is made of soft materials such as wood or plastic to facilitate interference fit with the mounting hole 11, and can also prevent the sealing ring 5 from being scratched by the guide column when the sealing ring 5 is tested.

[0052] Optionally, the positioning column 2 includes a first positioning column 21, a second positioning column 22, a third positioning column 23 and a fourth positioning column 24, the first positioning column 21 and the second positioning column 22 are arranged along the width direction of the base 1, and the third positioning column 23 and the fourth positioning column 24 are arranged along the length direction of the base 1; the center distance between the first positioning column 21 and the second positioning column 22 is n×d2, and the center distance between the third positioning column 23 and the fourth positioning column 24 is m×d2, wherein d2 is the center distance between two adjacent mounting holes 11 arranged along the length and width directions of the base 1, the diameter of the positioning column 2 is d1, and the diameter of the mounting hole 11 is also d1.

[0053] Possibly, the arrangement of the mounting holes 11 satisfies: d3=1.5×d2; wherein d2 is the center distance between two adjacent mounting holes 11 arranged along the length and width directions of the base 1, and d3 is the center distance between two adjacent mounting holes 11 arranged along the diagonal direction of the base 1; by designing mounting holes 11 with different center distances, it can be suitable for detecting sealing rings 5 of various sizes and shapes.

[0054] Optionally, the thickness of base 1 is T2, the depth of mounting hole 11 is h1, 0.5×T2≥h1, and d2>1.5d1, to ensure the strength of mounting hole 11 on base 1. The height of positioning post 2 satisfies h3=1.5×h1+h4 or h4≤h3≤2h1+h4; where h3 is the height of positioning post 2, h1 is the depth of mounting hole 11, and h4 is the thickness of sealing ring 5.

[0055] like Figure 1 and Figure 3 As shown, when the sealing ring 5 being tested is a circular sealing ring, it is placed outside the third positioning post 23 and the fourth positioning post 24, and is located between the first positioning post 21 and the second positioning post 22 and is squeezed and deformed. n×d2 and m×d2 satisfy the following: n×d2-d1≤0.6×D1 and 0.7×D2≤m×d2+d1≤0.9×D2; wherein D1 is the outer diameter of the circular sealing ring and D2 is the inner diameter of the circular sealing ring. The deformation of the circular sealing ring installed in this way is appropriate, which can fully expose the crack while preventing the circular sealing ring from being excessively deformed due to clamping. It is possible that the length of the base 1 is L2 and the width is W2, L2 ≥ 1.5×D1, W2 ≥ 1.5×D1; this is used to ensure that the circular sealing ring can be clamped on the base 1.

[0056] like Figure 2 and Figure 3 As shown, when the sealing ring 5 being tested is a square sealing ring, it is positioned between the first, second, third, and fourth positioning posts 21, 22, 23, and 24. The two long sides of the square sealing ring abut against the first and second positioning posts 21, 22, and are squeezed and deformed. The two wide sides of the square sealing ring abut against the third and fourth positioning posts 23, 24, and are squeezed and deformed. n×d2 and m×d2 satisfy the following: 0.5×W1≤n×d2-d1≤0.9×W1 and 0.5×L1≤m×d2-d1≤0.9×L1. Where W1 is the outer ring width of the square sealing ring and L1 is the outer ring length of the square sealing ring. The deformation of the square sealing ring thus installed is appropriate, fully exposing any cracks while preventing excessive deformation due to clamping. Preferably, L2 ≥ 1.5×L1 and W2 ≥ 1.5×W1 to ensure that the square sealing ring can be clamped to the base 1.

[0057] See below Figure 5-Figure 8 , Figure 5 This is a schematic diagram of the overall structure of the second embodiment of the sealing ring detection fixture of the present invention. Figure 6 This is a schematic diagram of the second embodiment of the sealing ring detection fixture of the present invention in use. Figure 7 This is a schematic structural diagram of the first mounting member of the present invention. Figure 8 This is a structural diagram of the first mounting member of the present invention from another angle. Figure 5-Figure 8 As shown in FIG. 1 , as another possible embodiment, the sealing ring detection fixture includes a first mounting member 3, a second mounting member 4, an extrusion structure and a moving structure. The sealing ring 5 is configured to be arranged between the first mounting member 3 and the second mounting member 4; the extrusion structure is configured to reduce the distance between the first mounting member 3 and the second mounting member 4 so that the sealing ring 5 can be subjected to an extrusion force in a radial direction. Since the sealing ring 5 is subjected to an extrusion force in a radial direction, it is radially deformed, which can expand the crack and fully expose the crack. Therefore, by reducing the distance between the first mounting member 3 and the second mounting member 4, the sealing ring 5 is radially deformed, and then the sealing ring 5 is subjected to an extrusion force in a radial direction. Detecting whether there are cracks can improve the accuracy of crack detection; the moving structure is used to drive the first mounting member 3 and / or the second mounting member 4 to move parallel and relative to each other in the radial plane of the sealing ring 5. When the sealing ring 5 is inspected, when an extrusion force is applied to the sealing ring 5, a certain friction force will be generated between the sealing ring 5 and the first mounting member 3 and the second mounting member 4. At this time, under the action of the moving structure, relative movement occurs between the first mounting member 3 and the second mounting member 4, and the sealing ring 5 rotates under the action of the friction force, thereby being able to expose cracks at various positions on the entire circle of the sealing ring 5, further improving the accuracy of crack detection.

[0058] Optionally, a first groove 31 is provided on the first mounting member 3, and a second groove 41 is provided on the second mounting member 4. The first groove 31 and the second groove 41 are respectively provided on the opposite end surfaces of the first mounting member 3 and the second mounting member 4. Placing one end of the sealing ring 5 in the first groove 31 and the opposite end in the second groove 41 can prevent the sealing ring 5 from axial movement when the sealing ring 5 is squeezed, and can also provide guidance for the sealing ring 5 when the sealing ring 5 is driven to rotate. Optionally, there are multiple first grooves 31, each of which is arranged parallel to each other, and there are multiple second grooves 41, each of which is arranged in a one-to-one correspondence with the first groove 31. By providing multiple first grooves 31 and second grooves 41, it is possible to detect multiple sealing rings 5 at the same time, thereby improving detection efficiency.

[0059] It should be noted that the first groove 31 can pass through the first mounting member 3 along the length direction of the first groove 31, and the length of the first groove 31 can also be set to a first length value, and the first length value is greater than or equal to the outer circumference of the sealing ring 5. The second groove 41 can also pass through the second mounting frame along the length direction of the second groove 41, and can also be set to a second length value, and the first length value is greater than or equal to the outer circumference of the sealing ring 5. The second length value can be equal to or different from the first length value. As long as the sealing ring 5 can rotate a full circle in the first groove 31 and the second groove 41 to fully expose the crack, the present invention does not make any specific limitations.

[0060] Those skilled in the art will appreciate that, although it has been described above that the first groove 31 and the second groove 41 are used to prevent the sealing ring 5 from moving in the axial direction and to provide guidance for the rotation of the sealing ring 5, this is not restrictive, and guide posts or guide plates may also be provided on the first mounting member 3 and the second mounting member 4 to prevent the sealing ring 5 from moving in the axial direction and to provide guidance for the rotation of the sealing ring 5.

[0061] Possibly, the first mounting member 3 is a first mounting plate, and the second mounting member 4 is a second mounting plate, with the first mounting plate being arranged parallel to the second mounting plate. The extrusion structure includes a first guide rail, a first slider, and a first driving device. The first guide rail is arranged perpendicular to the second mounting plate, the first slider is movably connected to the first guide rail, and the first slider is connected to the first mounting plate. The first driving device can be a device such as a cylinder, a motor, or a pneumatic motor. The first driving device drives the first slider to move, thereby driving the first mounting plate to move, increasing or decreasing the distance between the first mounting plate and the second mounting plate. When the distance between the first mounting plate and the second mounting plate decreases, the sealing ring 5 is subjected to a radial extrusion force. The moving structure includes a second guide rail, a second slider, and a second driving device. The second guide rail is arranged parallel to the length direction of the second groove 41. The second slider is movably connected to the second slide rail. The second slider is connected to the second mounting plate. The second driving device can be a cylinder, a motor, a pneumatic motor or other devices. The second driving device drives the second slider to move, and then drives the second mounting plate to move parallel to the first mounting plate in the radial plane of the sealing ring 5, so that the sealing ring 5 rotates with the movement of the second mounting plate under the action of friction.

[0062] Those skilled in the art will appreciate that, although the above description describes that the extrusion structure drives the movement of the first mounting plate and the moving structure drives the movement of the second mounting plate, this is not restrictive, and the extrusion structure can also drive the movement of the second mounting plate, and can also drive the movement of the first mounting plate and the second mounting plate at the same time, as long as the distance between the first mounting plate and the second mounting plate can be increased or decreased. The moving structure can also drive the movement of the first mounting plate, and can also drive the movement of the first mounting plate and the second mounting plate at the same time, as long as the first mounting plate and the second mounting plate can move parallel to each other and produce relative motion within the radial plane of the sealing ring 5. In addition, although the above description describes that the extrusion structure and the moving structure drive the guide rail slider structure to drive the movement of the first mounting plate and / or the second mounting plate via the driving device, this is not restrictive, and the driving device can also drive the screw to rotate to drive the nut to move, thereby driving the movement of the first mounting plate and / or the second mounting plate.

[0063] The reduction in distance between the first mounting member 3 and the second mounting member 4 satisfies the following conditions: when the sealing ring 5 is a circular sealing ring, 0.4×D1≤△H1≤0.6×D1; wherein, △H1 is the reduction in distance between the first mounting member 3 and the second mounting member 4 when the sealing ring 5 is a circular sealing ring, and D1 is the outer diameter of the circular sealing ring; when the sealing ring 5 is a square sealing ring, 0.4×W1≤△H2≤0.6×W1, 0.4×L1≤△H3≤0.6×L1; wherein, △H2 is the reduction in distance between the first mounting member 3 and the second mounting member 4 when the wide side of the square sealing ring is perpendicular to the first mounting member 3, △H3 is the reduction in distance between the first mounting member 3 and the second mounting member 4 when the long side of the square sealing ring is perpendicular to the first mounting member 3, W1 is the outer ring width of the square sealing ring, and L1 is the outer ring length of the square sealing ring. The distance reduction is set in this way so that when the sealing ring 5 is inspected, the deformation of the sealing ring 5 is appropriate, which can fully expose the cracks while not causing excessive deformation of the sealing ring 5 due to clamping reasons, thereby avoiding the sealing ring 5 from failing due to deformation and affecting normal use.

[0064] The first and second mounting plates may have the same dimensions, with a length of L3, a width of W3, and a thickness of T3. The first and second grooves 31, 41 may have a depth of h2, with 0.5 × T3 ≥ h2, to ensure the strength of the first and second mounting plates. It should be noted that the dimensions of the first and second mounting plates may differ, as long as the first and second grooves 31, 41 are provided and the dimensions of the first and second mounting plates are ensured. Persons skilled in the art may adjust these dimensions as needed.

[0065] The widths of the first and second grooves 31, 41 may satisfy the following: 1.2 × T1 ≤ W4 ≤ 1.5 × T1, where W4 is the width of the first and second grooves 31, 41, and T1 is the thickness of the sealing ring 5. This arrangement allows the sealing ring 5 to rotate smoothly within the first and second grooves 31, 41, while preventing significant axial movement of the sealing ring 5. The distance between adjacent edges of two adjacent first grooves 31 is W5, where W5 ≤ W4 ≤ 1.5 × W5. This allows for as many first grooves 31 as possible while ensuring the strength of the first mounting member 3 at the first grooves 31. The distance between adjacent edges of two adjacent second grooves 41 is the same as W5.

[0066] It should be noted that the above-mentioned embodiments are only used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the above-mentioned embodiments so that the present invention can be applied to more specific application scenarios.

[0067] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A sealing ring detection fixture, characterized in that: The sealing ring detection fixture comprises: base; A plurality of positioning posts are mounted on the base and are arranged so as to enable the sealing ring to be radially deformed and arranged between the positioning posts.

2. The sealing ring detection fixture according to claim 1, characterized in that: A plurality of mounting holes are provided on the top surface of the base, the bottom of each positioning column is installed in the corresponding mounting hole, and the mounting holes are arranged at equal intervals along the length direction, width direction and diagonal direction of the base.

3. The sealing ring detection fixture according to claim 2, characterized in that: The positioning column is interference-fitted with the mounting hole.

4. The sealing ring detection fixture according to claim 2, characterized in that: The positioning posts include a first positioning post, a second positioning post, a third positioning post, and a fourth positioning post, wherein the first positioning post and the second positioning post are arranged along the width direction of the base, and the third positioning post and the fourth positioning post are arranged along the length direction of the base; The center distance between the first positioning post and the second positioning post is n×d2, and the center distance between the third positioning post and the fourth positioning post is m×d2, wherein d2 is the center distance between two adjacent mounting holes arranged along the length and width directions of the base, and the diameter of the positioning post is d1; When the sealing ring is a circular sealing ring, n×d2 and m×d2 satisfy: n×d2-d1≤0.6×D1 and 0.7×D2≤m×d2+d1≤0.9×D2; Wherein, D1 is the outer diameter of the circular sealing ring, and D2 is the inner diameter of the circular sealing ring; and / or When the sealing ring is a square sealing ring, n×d2 and m×d2 satisfy: 0.5×W1≤n×d2-d1≤0.9×W1 and 0.5×L1≤m×d2-d1≤0.9×L1; Wherein, W1 is the outer ring width of the square sealing ring, and L1 is the outer ring length of the square sealing ring.

5. A sealing ring detection fixture, characterized in that: The sealing ring detection fixture comprises: a first mounting member; a second mounting member, wherein the sealing ring is configured to be disposed between the first mounting member and the second mounting member; An extrusion structure is configured to reduce the distance between the first mounting member and the second mounting member so that the sealing ring can be subjected to an extrusion force in a radial direction.

6. The sealing ring detection fixture according to claim 5, characterized in that: The sealing ring detection fixture further includes a moving structure, and the moving structure is used to drive the first mounting member and / or the second mounting member to move parallel to and relative to each other in a radial plane of the sealing ring.

7. The sealing ring detection fixture according to claim 6, characterized in that: The first mounting member is provided with a first groove, the second mounting member is provided with a second groove, and the first groove and the second groove are respectively provided on opposite end surfaces of the first mounting member and the second mounting member.

8. The sealing ring detection fixture according to claim 7, characterized in that: There are a plurality of first grooves, and the first grooves are arranged parallel to each other. There are a plurality of second grooves, and the second grooves are arranged in a one-to-one correspondence with the first grooves.

9. The sealing ring detection fixture according to claim 5, characterized in that: The distance reduction between the first mounting member and the second mounting member satisfies: 0.4×D1≤△H1≤0.6×D1; Wherein, ΔH1 is the amount of reduction in the distance between the first mounting member and the second mounting member when the sealing ring is a circular sealing ring, and D1 is the outer diameter of the circular sealing ring; and / or The distance reduction between the first mounting member and the second mounting member satisfies: 0.4×W1≤△H2≤0.6×W1, 0.4×L1≤△H3≤0.6×L1; Wherein, ΔH2 is the amount of reduction in the distance between the first mounting member and the second mounting member when the wide side of the square sealing ring is perpendicular to the first mounting member when the sealing ring is a square sealing ring; ΔH3 is the amount of reduction in the distance between the first mounting member and the second mounting member when the long side of the square sealing ring is perpendicular to the first mounting member; W1 is the outer ring width of the square sealing ring; and L1 is the outer ring length of the square sealing ring.

10. A sealing ring detection device, characterized in that: The sealing ring detection device includes the sealing ring detection fixture according to any one of claims 1 to 9.

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