Inner diameter measuring device for sealing ring based on nitrile rubber
By designing a nitrile rubber seal ring inner diameter measurement device that adopts multiple measurement methods, the measurement error and deformation of the super-large inner diameter seal ring in the prior art is solved, and higher measurement accuracy and reliability are achieved.
Patent Information
- Application Number
- CN202421868562.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-08-05
AI Technical Summary
In the prior art, when measuring nitrile rubber sealing rings with an ultra-large inner diameter, there are problems of artificial measurement errors and sealing ring deformation, which affects the measurement accuracy.
An inner diameter measuring device based on nitrile rubber sealing ring was designed, and two independent measurement methods were adopted: the first measuring part realizes preliminary measurement of the inner diameter of the sealing ring by measuring the circular table and the motor-driven movable block and support plate; the second measuring part realizes further measurement of the inner diameter of the sealing ring through the driving wheel and Hall sensor, combining the telescopic cylinder and the transmission wheel, and improves the measurement accuracy through the average value of the two measurements.
It effectively reduces artificial measurement errors, improves the accuracy and reliability of the inner diameter measurement of the seal ring, and ensures the accuracy of the measurement results.
Smart Images
Figure CN222824974U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing ring measurement, in particular to an inner diameter measuring device for a nitrile rubber sealing ring. Background Art
[0002] At present, the material used for sealing rings is usually nitrile rubber. During the production and processing of nitrile rubber sealing rings, the inner and outer diameters of the finished products need to be effectively tested to ensure the production quality of the products. The inner diameter measurement method of rubber rings with large inner diameters, especially nitrile rubber sealing rings with ultra-large inner diameters, has always been a difficult problem in the industry. When the inner diameter specification exceeds the maximum range of the non-contact imaging method, only contact measurement tools can be used. However, existing contact measurement tools have artificial measurement errors, that is, the contact tools cause the rubber sealing rings being measured to deform due to the force applied by the operator, resulting in large differences in the data obtained.
[0003] The utility model with publication number CN215003456U discloses a device for measuring the inner diameter of a sealing ring, comprising a workbench, a linear guide rail is arranged on the workbench, a first slider and a second slider are arranged on the linear guide rail, a positioning mechanism is respectively arranged between the first slider and the second slider and the linear guide rail, a first cylindrical block is arranged on the first slider, a second cylindrical block is arranged on the second slider, the diameter of the first cylindrical block is equal to the diameter of the second cylindrical block, and a distance measuring sensor is arranged on the first cylindrical block.
[0004] As shown in the above-mentioned utility model, the existing inner diameter measuring device of the sealing ring generally stretches the sealing ring through the first cylindrical block and the second cylindrical block, and then measures and calculates the inner diameter of the sealing ring through the distance measuring sensor. This method will cause the sealing ring to deform when stretching the sealing ring, affecting the measurement accuracy of the sealing ring. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides an inner diameter measuring device for a nitrile rubber sealing ring, which solves the above-mentioned problems.
[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: an inner diameter measuring device based on nitrile rubber sealing ring, comprising:
[0007] A base, wherein a display screen is mounted on one side of the middle portion of the upper surface of the base;
[0008] A first measuring piece, which is disposed at one end of the upper surface of the base and is used to perform a preliminary measurement of the inner diameter of the rubber ring;
[0009] A second measuring piece, which is disposed at the other end of the upper surface of the base and is used to further measure the inner diameter of the rubber ring;
[0010] The clamping assembly is arranged on the second measuring piece and is used to clamp the rubber ring to a limited position, so as to facilitate secondary measurement of the rubber ring.
[0011] Preferably, the first measuring member includes a measuring frustum fixed on a base, an empty slot is provided in the middle of an inner cavity of the measuring frustum, a movable block is arranged inside the empty slot, a plurality of linear slots distributed in a circular array are provided on an inner wall of the empty slot, a supporting plate is arranged in the linear slots, one end of the supporting plate is fixedly connected to the top end of the peripheral side of the movable block, and the fixed block is connected to the supporting plate through a reinforcing block.
[0012] Preferably, a first motor is fixed to the top of the measuring truncated table, a screw is fixed to the output shaft of the first motor, one end of the screw is inserted into the empty slot and is connected to a screw slot opened in the middle of the movable block, and a plurality of scales distributed in a circular array are inlaid on the inclined surface of the measuring truncated table, and the scales are staggered with the linear slots.
[0013] Preferably, the second measuring member includes a placing plate fixed to the other end of the upper surface of the base, an extension plate is fixed to the middle part of one end of the placing plate, a second motor is fixed to the lower surface of the extension plate, an output shaft of the second motor passes through the extension plate and is fixed with a driving wheel, a Hall sensor is fixed to the upper surface of the extension plate, and the Hall sensor corresponds to the output shaft of the second motor.
[0014] Preferably, the clamping assembly includes a linear groove opened in the middle of the placement plate, a telescopic cylinder is embedded on the inner wall of one end of the linear groove, a connecting plate is fixed to the output shaft of the telescopic cylinder, guide grooves are opened on the inner walls on both sides of the linear groove, and both ends of the connecting plate are inserted into the guide grooves.
[0015] Preferably, a mounting block is provided inside the linear groove, both ends of the mounting block are inserted into the guide groove, one side of the mounting block is connected to the connecting plate through a spring, and the upper surface of the mounting block is movably connected to the transmission wheel through a bearing.
[0016] Beneficial Effects
[0017] The utility model provides an inner diameter measuring device for a nitrile rubber sealing ring. Compared with the prior art, it has the following beneficial effects:
[0018] 1. The inner diameter measuring device based on nitrile rubber sealing ring is provided with a first measuring piece at one end of the upper surface of the base. The measuring truncated table on the first measuring piece places the sealing ring through multiple supporting plates, and the movable block and the supporting plate are driven upward by a motor and a screw rod. When the entire inner wall of the sealing ring contacts the outer wall of the measuring truncated table, the inner diameter of the sealing ring is measured by multiple scales on the measuring truncated table, thereby improving the measurement effect of the device.
[0019] 2. The inner diameter measuring device based on nitrile rubber sealing ring is provided with a second measuring piece at the other end of the upper surface of the base. The second measuring piece drives the driving wheel to rotate through the motor thereon, drives the transmission wheel to move through the telescopic cylinder thereon, clamps the inner and outer rings of the sealing ring, drives the sealing ring to rotate through the driving wheel, determines the circumference of the sealing ring according to the number of rotations of the driving wheel, and then obtains the inner diameter of the sealing ring according to the circumference. The final inner diameter of the sealing ring is determined by the average value of the inner diameters of the sealing ring obtained by the two measuring methods, thereby improving the measurement accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 This is a schematic cross-sectional view of the structure of the first measuring member of the utility model;
[0022] Figure 3 This is a schematic diagram of the structure of the second measuring member of the utility model;
[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the clamping assembly of the utility model.
[0024] In the figure: base 1, display screen 11, first measuring piece 2, measuring table 21, empty slot 22, movable block 23, linear slot 24, supporting plate 25, reinforcing block 26, first motor 27, screw rod 28, scale 29, second measuring piece 3, placement plate 31, extension plate 32, second motor 33, driving wheel 34, Hall sensor 35, clamping assembly 4, linear groove 41, telescopic cylinder 42, connecting plate 43, guide slot 44, mounting block 45, spring 46, transmission wheel 47. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] See Figure 1-4 , the utility model provides the following two technical solutions:
[0027] The first embodiment: an inner diameter measuring device for a nitrile rubber sealing ring, comprising:
[0028] The base 1 has a display screen 11 installed on one side of the middle portion of the upper surface of the base 1. The display screen 11 can display the number of revolutions of the driving wheel 34 and calculate the circumference and inner diameter of the sealing ring.
[0029] The first measuring piece 2 is arranged at one end of the upper surface of the base 1, and is used to perform preliminary measurement of the inner diameter of the rubber ring. The first measuring piece 2 includes a measuring truncated table 21 fixed on the base 1, and a hollow groove 22 is provided in the middle of the inner cavity of the measuring truncated table 21, and a movable block 23 is provided inside the hollow groove 22. A plurality of linear notches 24 distributed in a circular array are provided on the inner wall of the hollow groove 22, and a supporting plate 25 is provided in the linear notch 24 to play the role of placing a sealing ring. One end of the supporting plate 25 is fixedly connected to the top of the peripheral side of the movable block 23, and the fixed block is connected to the supporting plate 25 through a reinforcing block 26, which improves the support plate 25 and the movable block 23. The connection strength is improved, a first motor 27 is fixed on the top of the measuring truncated table 21, a screw rod 28 is fixed on the output shaft of the first motor 27, one end of the screw rod 28 is inserted into the empty slot 22 and is connected with the screw slot opened in the middle of the movable block 23, the first motor 27 drives the movable block 23 to move up and down through the screw rod 28, and then drives the supporting plate 25 to move up and down until the inner wall of the sealing ring contacts the outer wall of the measuring truncated table 21, a plurality of scales 29 distributed in a ring array are inlaid on the inclined surface of the measuring truncated table 21, the scales 29 and the linear slots 24 are staggered, the scales 29 can measure the inner diameter of the sealing ring, and the cooperation of multiple scales 29 can improve the measurement accuracy.
[0030] The second embodiment is mainly different from the first embodiment in that: a second measuring piece 3 is arranged at the other end of the upper surface of the base 1, and is used to further measure the inner diameter of the rubber ring. The second measuring piece 3 includes a placement plate 31 fixed to the other end of the upper surface of the base 1, an extension plate 32 is fixed to the middle of one end of the placement plate 31, a second motor 33 is fixed to the lower surface of the extension plate 32, the output shaft of the second motor 33 passes through the extension plate 32 and is fixed with a driving wheel 34, a Hall sensor 35 is fixed to the upper surface of the extension plate 32, the Hall sensor 35 corresponds to the output shaft of the second motor 33, and the Hall sensor 35 is electrically connected to the display screen 11, the second motor 33 drives the driving wheel 34 to rotate, and cooperates with the Hall actuator to measure the circumference of the sealing ring, and the inner diameter of the sealing ring is obtained through the circumference.
[0031] The clamping assembly 4 is provided on the second measuring piece 3, which is used to clamp the rubber ring and limit it, so as to facilitate the secondary measurement of the rubber ring. The clamping assembly 4 includes a linear groove 41 opened in the middle of the placement plate 31, and a telescopic cylinder 42 is embedded on the inner wall of one end of the linear groove 41. The output shaft of the telescopic cylinder 42 is fixed with a connecting plate 43. Guide grooves 44 are opened on the inner walls of both sides of the linear groove 41, and both ends of the connecting plate 43 are inserted into the guide grooves 44. A mounting block 45 is provided inside the linear groove 41, and both ends of the mounting block 45 are fixed to the inner wall of the linear groove 41. The ends are inserted into the guide groove 44, one side of the mounting block 45 is connected to the connecting plate 43 by a spring 46, and the upper surface of the mounting block 45 is movably connected with a transmission wheel 47 through a bearing. The connecting plate 43 and the mounting block 45 are driven to move by the telescopic cylinder 42, and then the transmission wheel 47 is driven to move, so that the transmission wheel 47 can be adjusted according to the thickness of the sealing ring. At the same time, the transmission wheel 47 cooperates with the driving wheel 34 to press the sealing ring under the action of the spring 46, and at the same time, it will not cause a large deformation of the sealing ring, thereby improving the measurement accuracy of the sealing ring as much as possible.
[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.
[0033] When in use, first place the sealing ring on the supporting plate 25, and place the sealing ring in the center as much as possible, then start the first motor 27, the first motor 27 drives the screw rod 28 to rotate, the screw rod 28 drives the movable block 23 to move downward, and the movable block 23 drives the sealing ring to move downward through the supporting plate 25 until the sealing ring contacts the outer wall of the measuring table 21, and then continue to move the supporting plate 25 downward until the supporting plate 25 is separated from the sealing ring. At this time, the inner wall of the sealing ring is completely in contact with the outer wall of the measuring table 21, and then the approximate inner diameter of the sealing ring is measured according to the scales 29 in multiple directions, and then the angle of the sealing ring is fine-tuned until the scales 29 in multiple directions are consistent in size or the error is small. At this time, the inner diameter of the sealing ring is preliminarily measured, and then the sealing ring is taken to the placement plate 31, and then the telescopic cylinder 42 is started. The telescopic cylinder 42 drives the transmission wheel 47 to move until the transmission wheel 47 and the driving wheel 34 are respectively fitted with the inner and outer circles of the sealing ring. At this time, the transmission wheel 47 slightly compresses the sealing ring under the action of the spring 46, but does not cause a large deformation of the sealing ring. Then the second motor 33 is started, and the second motor 33 drives the driving wheel 34 to rotate. The driving wheel 34 cooperates with the transmission wheel 47 to drive the sealing ring to rotate. The number of rotations of the driving wheel 34 is detected by the Hall sensor 35. When the sealing ring rotates one circle, the number of rotations of the driving wheel 34 multiplied by the circumference of the driving wheel 34 is the circumference of the sealing ring. The inner diameter of the sealing ring is then obtained by the circumference of the sealing ring. The above data are all displayed on the display screen 11. Combined with the average value of the inner diameter of the sealing ring obtained by the two previous and subsequent measurements, a more accurate value of the inner diameter of the sealing ring can be obtained, thereby improving the measurement accuracy of the device.
[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An inner diameter measuring device for a nitrile rubber sealing ring, characterized in that: include: A base, wherein a display screen is mounted on one side of the middle portion of the upper surface of the base; A first measuring piece, which is disposed at one end of the upper surface of the base and is used to perform a preliminary measurement of the inner diameter of the rubber ring; A second measuring piece, which is disposed at the other end of the upper surface of the base and is used to further measure the inner diameter of the rubber ring; The clamping assembly is arranged on the second measuring piece and is used to clamp the rubber ring to a limited position, so as to facilitate secondary measurement of the rubber ring.
2. The inner diameter measuring device for a nitrile rubber sealing ring according to claim 1, characterized in that: The first measuring part includes a measuring frustum fixed on a base, an empty slot is provided in the middle of an inner cavity of the measuring frustum, a movable block is arranged inside the empty slot, a plurality of linear slots distributed in a circular array are provided on an inner wall of the empty slot, a supporting plate is arranged in the linear slots, one end of the supporting plate is fixedly connected to the top end of the peripheral side of the movable block, and the fixed block is connected to the supporting plate through a reinforcing block.
3. The inner diameter measuring device for a nitrile rubber sealing ring according to claim 2, characterized in that: A first motor is fixed on the top of the measuring truncated table, a screw is fixed on the output shaft of the first motor, one end of the screw is inserted into the empty slot and is connected to a screw slot opened in the middle of the movable block, and a plurality of scales distributed in a circular array are inlaid on the inclined surface of the measuring truncated table, and the scales are staggered with the linear slots.
4. The inner diameter measuring device for a nitrile rubber sealing ring according to claim 1, characterized in that: The second measuring piece includes a placement plate fixed at the other end of the upper surface of the base, an extension plate is fixed to the middle part of one end of the placement plate, a second motor is fixed to the lower surface of the extension plate, the output shaft of the second motor passes through the extension plate and is fixed with a driving wheel, and a Hall sensor is fixed to the upper surface of the extension plate, and the Hall sensor corresponds to the output shaft of the second motor.
5. The inner diameter measuring device for a nitrile rubber sealing ring according to claim 1, characterized in that: The clamping assembly includes a linear groove opened in the middle of the placement plate, a telescopic cylinder is embedded on the inner wall of one end of the linear groove, a connecting plate is fixed to the output shaft of the telescopic cylinder, guide grooves are opened on the inner walls on both sides of the linear groove, and both ends of the connecting plate are inserted into the guide grooves.
6. The inner diameter measuring device for a nitrile rubber sealing ring according to claim 5, characterized in that: A mounting block is arranged inside the linear groove, both ends of the mounting block are inserted into the guide groove, one side of the mounting block is connected to the connecting plate through a spring, and the upper surface of the mounting block is movably connected to a transmission wheel through a bearing.