A seal inner surface quality inspection auxiliary device and inspection method

Abstract

The present invention discloses an auxiliary device and method for inspecting the inner surface quality of seals, and relates to the technical field of inspecting the inner surface quality of seals. The auxiliary device comprises: a handle body; a connecting rod fixedly connected to one end of the handle body, the connecting rod being perpendicular to the handle body; a first rolling device arranged at the bottom of the connecting rod, the first rolling device being used to abut against the inner surface of the seal; a second rolling device arranged at the side of the connecting rod, the second rolling device being used to abut against the outer surface of the seal; and a third rolling device arranged at the other end of the handle body, the third rolling device being used to abut against a placement plane. After the auxiliary device for inspecting the inner surface quality of seals of the present invention is applied, the difficulty of inspecting the inner surface quality defects of seals is reduced, and the efficiency of product quality inspection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of seal inner surface quality inspection, and in particular to a seal inner surface quality inspection auxiliary device and inspection method. Background Art

[0002] The surface quality of seal products has a significant impact on sealing performance. Flow marks, dents, depressions, protrusions, shrinkage cracks, flash and other quality defects on the surface of seals can cause sealing failure of seals. Checking the surface quality defects of seal products is a very important product quality inspection procedure.

[0003] At present, the inspection of surface quality defects of sealing products is generally carried out by manual operation and naked eye observation. However, the structures of sealing products vary, and there are differences in the structures of the outer surface and the inner surface. The quality defects of the outer surface can be inspected by manual operation and naked eye observation, which is easy to operate and efficient. However, due to the small observable space of the inner surface and the difficulty of large-scale exposure, the inner surface of the seal is manually turned inside out for observation, which is labor-intensive and inefficient.

[0004] Therefore, it is particularly necessary to develop a seal inner surface quality inspection device that is suitable for mass production scenarios of seals and has a simple structure and is easy to operate, so as to reduce the difficulty of inspecting quality defects on the inner surface of seals and improve the efficiency of product defect inspection. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a seal inner surface quality inspection auxiliary device, which can effectively reduce the inspection difficulty of seal inner surface quality defects and improve the seal defect inspection efficiency.

[0006] The present invention also provides an inspection method using the above-mentioned auxiliary device for inspecting the inner surface quality of the sealing component.

[0007] The seal inner surface quality inspection auxiliary device of the first aspect of the embodiment of the present invention includes: a handle body; a connecting rod fixedly connected to one end of the handle body, the connecting rod being perpendicular to the handle body; a first rolling device arranged at the bottom of the connecting rod, the first rolling device being used to abut against the inner surface of the seal; a second rolling device arranged on the side of the connecting rod, the second rolling device being used to abut against the outer surface of the seal; and a third rolling device arranged at the other end of the handle body, the third rolling device being used to abut against the placement plane.

[0008] In a further embodiment, the handle body is rod-shaped, and the handle body includes at least one of a cylinder, an elliptical cylinder, a frustum, a cone, a truncated pyramid or a prism.

[0009] In a further embodiment, knurling is provided on at least a portion of the circumference of the handle body.

[0010] In a further embodiment, the connecting rod includes at least one of a cylinder, a prism, an elliptical cylinder, a frustum or a truncated pyramid.

[0011] In a further embodiment, the first rolling device and the second rolling device are both rotating rollers, and the rotating rollers include at least one of a bearing, a cylinder, an elliptical cylinder, a circular ring or an elliptical ring.

[0012] In a further embodiment, the rotation axis of the first rolling device is parallel to the axis of the handle body.

[0013] In a further embodiment, the rotation axis of the second rolling device is perpendicular to the axis of the handle body.

[0014] In a further embodiment, the third rolling device comprises a rotating roller, and the rotating roller comprises at least one of a bearing, a cylinder, an elliptical cylinder, a circular ring or an elliptical ring.

[0015] In a further embodiment, a visual probe is also provided on the connecting rod for inspecting defects of the sealing member.

[0016] The method for inspecting the inner surface quality of a seal according to the second aspect of the present invention comprises the following steps:

[0017] Place the seal on a flat surface with the inner surface of the seal facing upward;

[0018] Place the first rolling device in the groove of the seal so that the rotating circumferential surface of the first rolling device is in contact with the side of the seal to be inspected, and at the same time, the rotating circumferential surface of the second rolling device is in contact with the outer surface of the seal;

[0019] Make the rotating plane of the third rolling device contact with the placement plane, and ensure that the contact relationship between the first rolling device and the second rolling device and the sealing member does not change;

[0020] Push the handle body to move it along the extension direction of the seal, and check the defects on the inner surface of the seal.

[0021] The seal inner surface quality inspection auxiliary device of the embodiment of the present invention has at least the following beneficial effects: after the seal inner surface quality inspection auxiliary device of the embodiment of the first aspect of the present invention is applied, it can effectively reduce the inspection difficulty of the seal inner surface quality defects and improve the product quality inspection efficiency. The quality inspection auxiliary device has a simple structure, is easy to operate, has a low manufacturing cost and is easy to carry, and can be well applied to mass production scenarios.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 It is a schematic diagram of the overall structure of the auxiliary device for inspecting the inner surface quality of a seal according to an embodiment of the present invention;

[0025] Figure 2 It is a left side view of the auxiliary device for inspecting the inner surface quality of a seal according to an embodiment of the present invention;

[0026] Figure 3 It is a schematic cross-sectional view of the sealing member in the present invention.

[0027] Reference numerals:

[0028] Seal 1 , handle body 11 , connecting rod 12 , first rolling device 21 , second rolling device 22 , third rolling device 23 , knurling 111 , inner surface 100 , outer surface 200 . DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0034] The seal inner surface quality inspection auxiliary device according to the first embodiment of the present invention comprises a handle body 11 , a connecting rod 12 , a first rolling device 21 , a second rolling device 22 and a third rolling device 23 .

[0035] Specifically, the connecting rod 12 is fixedly connected to one end of the handle body 11, and the connecting rod 12 is perpendicular to the handle body 11; the first rolling device 21 is arranged at the bottom of the connecting rod 12, and the first rolling device 21 is used to resist the inner surface 100 of the seal 1; the second rolling device 22 is arranged on the side of the connecting rod 12, and the second rolling device 22 is used to resist the outer surface 200 of the seal 1; and the third rolling device 23 is arranged at the other end of the handle body 11, and the third rolling device 23 is used to resist against the placement plane. When checking the inner surface quality defects of the seal 1, place the seal 1 on the placement plane so that the inner surface 100 of the seal 1 faces upward; then put the first rolling device 21 into the groove of the seal 1 so that the rotating circumferential surface of the first rolling device 21 fits with the side of the seal 1 to be inspected, and at the same time, the rotating circumferential surface of the second rolling device 22 fits with the outer surface of the seal 1; then let the rotating plane of the third rolling device 23 contact the placement plane, and ensure that the contact relationship between the first rolling device 21 and the second rolling device 22 and the seal 1 does not change; finally, push the handle body 11 so that the handle body 11 moves along the extension direction of the seal 1, and check the defects of the inner surface 100 of the seal 1. After applying the quality inspection auxiliary device, the difficulty of inspecting the quality defects of the inner surface 100 of the seal 1 is effectively reduced, and the efficiency of product quality inspection is improved. The device has a simple structure, low cost, and is easy to carry; and the device is convenient to use and easy to operate, and can be well applied to mass production scenarios.

[0036] In a possible implementation manner, the handle body 11 is rod-shaped, and the handle body 11 includes at least one of a cylinder, an elliptical cylinder, a frustum, a cone, a truncated pyramid, or a prism.

[0037] In one embodiment, the handle body 11 includes a cylinder and a truncated cone, one end of the cylinder segment is fixedly connected to the bottom end surface of the truncated cone, the other end surface of the truncated cone is connected to the middle part of the connecting rod 12, and the axis of the cylinder coincides with the axis of the truncated cone. The cylinder portion of the handle body 11 is convenient for technicians to hold; the truncated cone portion can prevent the handle body 11 from interfering with the second rolling device 22, thereby affecting the normal operation of the second rolling device 22.

[0038] In a possible implementation, a knurling 111 is provided on at least part of the circumference of the handle body 11. The knurling 111 is provided on the handle body 11 to increase the roughness of the handle body 11 and play an anti-slip role.

[0039] In one embodiment, the knurling 111 is provided on the cylindrical portion of the handle body 11. When the technician uses the reduction inspection auxiliary device to perform a quality inspection on the inner surface 100 of the seal 1, the technician holds the cylindrical portion provided with the knurling 111, thereby preventing the palm from sliding relative to the handle body 11, thereby improving the practicality and operability of the auxiliary device.

[0040] In a possible implementation manner, the connecting rod 12 is rod-shaped, and the connecting rod 12 includes at least one of a cylinder, a prism, an elliptical cylinder, a frustum, or a truncated cone.

[0041] In one embodiment, the connecting rod 12 is a cuboid, and one end of the handle body 11 is vertically connected to one of the side surfaces of the cuboid. Further, the handle body 11 is connected to the middle of one of the side surfaces of the cuboid. Since any two adjacent side surfaces of the cuboid are perpendicular to each other, the positioning and installation of the first rolling device 21 and the second rolling device 22 can be facilitated, the installation accuracy can be improved, and the manufacturing difficulty and manufacturing cost of the quality inspection auxiliary device can be reduced.

[0042] In a possible implementation, the first rolling device 21 and the second rolling device 22 are both rotating rollers, and the rotating rollers include at least one of a bearing, a cylinder, an elliptical cylinder, a circular ring, or an elliptical ring. The structural form of the rotating roller is determined according to the specific structure of the seal 1, such as the size and curvature of the groove on the inner surface 100 of the seal 1, and the observation angle required for inspecting the quality of the inner surface 100 of the seal 1.

[0043] It is understandable that in some other embodiments, the structures of the first rolling device 21 and the second rolling device 22 may be the same or different. For example, the first rolling device 21 may include a bearing, and the second rolling device 22 may include a frustum.

[0044] As one embodiment, the first rolling device 21 and the second rolling device 22 each include two bearings arranged in parallel. In the first rolling device 21, the inner ring of the bearing is connected to the bottom of the connecting rod 12 through a nut; in the second rolling device 22, the inner ring of the bearing is installed on the same side of the connecting rod 12 through a nut. When inspecting the defects of the inner surface 100 of the seal 1, the bearing of the first rolling device 21 contacts the groove of the inner surface 100 of the seal 1, and the bearing of the second rolling device 22 contacts the outer surface 200 of the seal 1. The above two contact states are maintained, and the third rolling device 23 contacts the placement plane and pushes the quality inspection auxiliary device to move along the extension direction of the seal 1. At the same time, the technician visually inspects the quality defects of the inner surface of the contact part of the seal 1 and the quality inspection auxiliary device until the inspection is completed.

[0045] It should be noted that in the above description, the bottom of the connecting rod 12 is opposite to the surface where the handle body 11 is connected to the connecting rod 12 ; the side surface of the connecting rod 12 is adjacent to the surface where the handle body 11 and the connecting rod 12 are connected.

[0046] In the above embodiment, the first rolling device 21 includes an adjusting nut for adjusting the distance between the first rolling device 21 and the connecting rod 12, so that the first rolling device 21 can better contact the inner surface 100 of the seal 1, thereby improving the practicality of the seal inner surface quality inspection auxiliary device of the present invention.

[0047] In a possible implementation, the rotation axis of the first rolling device 21 is parallel to the axis of the handle body 11 to facilitate the installation and positioning of the first rolling device 21. When the contact angle between the first rolling device 21 and the outer surface 200 of the seal 1 needs to be adjusted, it is only necessary to select a truncated cone or other rolling component with a corresponding bevel angle.

[0048] In some other possible implementations, the rotation axis of the first rolling device 21 forms a certain angle with the axis of the handle body 11 to meet the requirements of special inspection angles.

[0049] In a possible implementation, the rotation axis of the second rolling device 22 is perpendicular to the axis of the handle body 11. That is, the bolts fixing the second rolling device 22 to the connecting rod 12 are perpendicular to the handle body 11, and then the positioning and installation of the second rolling device 22 ensure the installation accuracy of the second rolling device 22. When it is necessary to adjust the contact angle between the second rolling device 22 and the outer surface 200 of the seal 1, it is only necessary to select a truncated cone or other rolling components with a corresponding bevel angle.

[0050] In a possible implementation, the third rolling device 23 includes a rotating roller, and the rotating roller includes at least one of a bearing, a cylinder, an elliptical cylinder, a circular ring or an elliptical ring. It can be understood that the rotation axis of the rotating roller coincides with the axis of the handle body 11, and the diameter of the outer circumference of the rotating roller is greater than the diameter of the circumscribed circle of the handle body 11, so that the rotating roller can directly contact the contact plane, so that the handle body 11 can move smoothly on the contact plane.

[0051] In a possible implementation, a visual probe is also provided on the connecting rod 12 for inspecting defects of the seal 1. Using the visual probe to inspect the quality defects of the inner surface 100 of the seal 1 replaces the visual inspection of the technicians, thereby improving the accuracy of the inspection and reducing the workload of the technicians.

[0052] It can be understood that all components of the seal inner surface quality inspection auxiliary device of the first embodiment of the present invention have rounded corners or chamfers, which can effectively prevent the surface of the seal 1 from being scratched during the inspection process.

[0053] The method for inspecting the inner surface quality of a seal according to the second aspect of the present invention comprises the following steps:

[0054] Place the seal 1 on a placement plane so that the inner surface 100 of the seal 1 faces upward;

[0055] Place the first rolling device 21 in the groove of the seal 1, so that the rotating circumferential surface of the first rolling device 21 is in contact with the side of the seal 1 to be inspected, and at the same time, the rotating circumferential surface of the second rolling device 22 is in contact with the outer surface 200 of the seal 1;

[0056] Make the rotation plane of the third rolling device 23 contact the placement plane, and ensure that the contact relationship between the first rolling device 21 and the second rolling device 22 and the sealing member 1 does not change;

[0057] The handle body 11 is pushed to move along the extension direction of the sealing member 1 , and defects on the inner surface 100 of the sealing member 1 are checked.

[0058] The following describes in detail a seal inner surface quality inspection auxiliary device and a seal inner surface quality inspection method according to an embodiment of the present invention with a specific embodiment. It is worth noting that the following description is only an exemplary description and is not a specific limitation of the invention.

[0059] See also Figures 1 to 3The handle body 11 is a combination of a cylinder and a truncated cone. The number of cylinders and truncated cones is one respectively, the end face of the cylinder is connected to the bottom end face of the truncated cone, the central axis of the end face of the cylinder coincides with the central axis of the end face of the truncated cone, the surface of the cylinder is provided with knurling, the length of the cylinder is 80mm, the diameter is 25mm, the height of the truncated cone is 40mm, and the end face diameters are 25mm and 12mm respectively;

[0060] The connecting rod 12 is a rectangular parallelepiped, and there is one of them, with a length, width and height of 47 mm, 12 mm and 12 mm respectively. The length×width surface of the rectangular parallelepiped is connected to the truncated cone end surface of the handle body, and the central axis of the connecting surface of the rectangular parallelepiped coincides with the central axis of the end surface of the handle body.

[0061] The first rolling device 21 includes two bearings, the outer ring diameter of each bearing is 28 mm, the inner ring of the bearing is connected to the length×width surface of the transverse rod through a nut, and the bearing is located on the opposite side of the connection surface between the handle body and the transverse rod;

[0062] The second rolling device 22 includes two bearings, the outer ring diameter of each bearing is 28 mm, the inner ring of the bearing is connected to the length × height surface of the transverse rod through a nut, and the two bearings are located on the same side of the transverse rod;

[0063] The third rolling device includes a bearing, the outer ring of the bearing has a diameter of 28 mm, the inner ring of the bearing is connected to the cylindrical end face of the handle body through a fixing nut, and the rotation axis of the bearing coincides with the central axis of the cylindrical end face;

[0064] Seal 1 is an oil seal with specifications of 920×920×25mm, 970×1034×25mm and 1020×1084×25mm respectively. The comparative test is divided into two groups, with 15 seals 1 in each group, and the inner surface quality defects of the groove of seal 1 are checked.

[0065] The inspection method of the seal inner surface quality inspection auxiliary device using the first embodiment of the present invention comprises the following steps:

[0066] Place the oil seal 1 product on a flat surface;

[0067] The surface of the outer ring of the bearing of the first rolling device 21 is in contact with the inner surface 100;

[0068] The surface of the bearing outer ring of the second rolling device 22 is in contact with the outer surface 200;

[0069] The surface of the outer ring of the bearing of the third rolling device 23 is in contact with the placement plane, while ensuring that the contact relationship between the first rolling device 21 and the second rolling device 22 and the oil seal 1 does not change;

[0070] Push the handle body 11 along the extension direction of the oil seal 1, and visually inspect the surface quality defects at the inner surface 100. The following table shows the effect comparison results before and after applying the embodiment of the present invention:

[0071]

[0072] It can be seen from the above table that the auxiliary device for inner surface quality inspection of the seal 1 according to the first aspect of the embodiment of the present invention can effectively reduce the difficulty of inner surface quality inspection of the seal 1 and improve the defect inspection efficiency of the seal 1.

[0073] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A seal inner surface quality inspection auxiliary device, characterized in that: include: handle body; A connecting rod, fixedly connected to one end of the handle body, wherein the connecting rod is perpendicular to the handle body; The connecting rod is also provided with a visual probe for inspecting defects of the sealing member; A first rolling device, disposed at the bottom of the connecting rod, the first rolling device being used to abut against the inner surface of the sealing member; The rotation axis of the first rolling device is parallel to the axis of the handle body; A second rolling device is arranged on a side of the connecting rod, and the second rolling device is used to abut against an outer surface of the sealing member; a rotation axis of the second rolling device is perpendicular to an axis of the handle body; as well as The third rolling device is arranged at the other end of the handle body, and the third rolling device is used to abut against the placement plane.

2. The seal inner surface quality inspection auxiliary device according to claim 1, characterized in that: The handle body is rod-shaped, and the handle body includes at least one of a cylinder, an elliptical cylinder, a frustum, a cone, a truncated pyramid or a prism.

3. The seal inner surface quality inspection auxiliary device according to claim 2, characterized in that: At least part of the circumference of the handle body is provided with knurling.

4. The seal inner surface quality inspection auxiliary device according to claim 1, characterized in that: The connecting rod includes at least one of a cylinder, a prism, an elliptical cylinder, a frustum or a truncated pyramid.

5. The seal inner surface quality inspection auxiliary device according to claim 1, characterized in that: The first rolling device and the second rolling device are both rotating rollers, and the rotating rollers include at least one of a bearing, a cylinder, an elliptical cylinder, a circular ring or an elliptical ring.

6. The seal inner surface quality inspection auxiliary device according to claim 1, characterized in that: The third rolling device includes a rotating roller, and the rotating roller includes at least one of a bearing, a cylinder, an elliptical cylinder, a circular ring or an elliptical ring.

7. The seal inner surface quality inspection auxiliary device according to claim 1, characterized in that: The connecting rod is also provided with a visual probe for inspecting defects of the sealing member.

8. A method for inspecting the inner surface quality of a seal, characterized in that: The use of the seal inner surface quality inspection auxiliary device according to any one of claims 1 to 7 includes the following steps: Place the seal on a flat surface with the inner surface of the seal facing upward; Place the first rolling device in the groove of the seal so that the rotating circumferential surface of the first rolling device is in contact with the side of the seal to be inspected, and at the same time, the rotating circumferential surface of the second rolling device is in contact with the outer surface of the seal; Make the rotating plane of the third rolling device contact with the placement plane, and ensure that the contact relationship between the first rolling device and the second rolling device and the sealing member does not change; Push the handle body to move it along the extension direction of the seal, and check the defects on the inner surface of the seal.

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