CN114088556A - Sealing element testing device - Google Patents
Sealing element testing device Download PDFInfo
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- CN114088556A CN114088556A CN202111282930.7A CN202111282930A CN114088556A CN 114088556 A CN114088556 A CN 114088556A CN 202111282930 A CN202111282930 A CN 202111282930A CN 114088556 A CN114088556 A CN 114088556A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- Examining Or Testing Airtightness (AREA)
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The embodiment of the disclosure belongs to the technical field of sealing element testing, and particularly relates to a sealing element testing device. The disclosed embodiment aims to solve the problem that the impression forming process on the sealing element in the related art is inaccurate in acquisition. The sealing element testing device comprises a displacement structure for mounting a sealing element and a sealing matching element, wherein the displacement structure can drive the sealing element and the sealing matching element to repeatedly contact and separate, and simulate the process of repeatedly contacting and separating the sealing element and the sealing matching element when a workpiece is repeatedly opened and closed; the image acquisition equipment arranged on the displacement structure can acquire images of the sealing element and the sealing fitting piece in the contact and separation processes in real time, and the formation process of the surface indentation of the sealing element under different preset conditions is tested.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of sealing element testing, in particular to a sealing element testing device.
Background
Sealing elements such as rubber of the sealing valve, a cushion pad on the door, a sealing gasket of the cup cover of the vacuum cup, a sealing core of the ball inflating nozzle and the like all belong to softer materials, and the sealing elements are matched with harder sealing matching parts for use so as to realize sealing. After a period of use, an indentation may be formed where the seal contacts the sealing engagement.
In the related art, the seal and the sealing fitting are usually detached from the corresponding devices, and the indentation on the seal is observed through a microscope to obtain the formation process and formation mechanism of the indentation. However, the formation process and mechanism of the resulting indentation is analyzed by removing the seal and seal fitting from the apparatus, resulting in inaccuracies in the resulting indentation formation process and mechanism.
Disclosure of Invention
The embodiment of the disclosure provides a sealing element testing device, which is used for solving the problem that the acquisition of an indentation forming process on a sealing element is inaccurate.
In one aspect, embodiments of the present disclosure provide a seal testing device, including: a displacement structure for mounting a seal and a sealing engagement piece, the displacement structure for driving the seal and the sealing engagement piece to repeatedly contact and separate; and the image acquisition equipment is arranged on the displacement structure and is opposite to the contact area of the sealing element and the sealing matching piece, and is used for acquiring images when the sealing element and the sealing matching piece are contacted and separated.
Through the above-mentioned process that sets up sealing member and sealing fitting spare contact repeatedly and separation when the simulation work piece is opened and close repeatedly, the image when simultaneously acquireing sealing member and sealing fitting spare contact and separation in real time tests the formation process of sealing member surface indentation under the different preset condition.
In some embodiments, which may include the above embodiments, the displacement structure includes a fixed seat, a displacement frame, and a driving device; the displacement frame is arranged at the upper part of the fixed seat, and the sealing matching piece is arranged on the fixed seat; the displacement frame comprises a frame body and an installation plate arranged on the frame body, the installation plate is perpendicular to the relative movement direction of the sealing element and the sealing matching piece, and the sealing element is arranged on the installation plate; the driving device is connected with the rack body and the fixed seat and is used for driving the rack body to move relative to the fixed seat.
In some embodiments, which may include the above embodiments, the mounting plate is provided with a mounting window, a transparent plate is provided in the mounting window, and the sealing member is configured to be disposed on the transparent plate; the image acquisition equipment sets up the mounting panel deviates from one side of fixing base, just the image acquisition equipment with the support body is connected, the image acquisition equipment is just right installation window sets up.
In some embodiments, which may include the above-mentioned embodiments, a bottom end of the frame body facing away from the fixed seat has a fixed beam extending in a direction parallel to the mounting plate, and the image capturing device is connected to the fixed beam through a first adjusting device, and the first adjusting device is used for adjusting a relative position of the image capturing device and the mounting window.
In some embodiments, which may include the above embodiments, the fixing base includes a bottom plate, a second adjusting device disposed on the bottom plate, and a supporting portion; the driving device is connected with the bottom plate, the supporting portion is arranged on the second adjusting device, the sealing fitting piece is arranged on the supporting portion, and the second adjusting device is used for adjusting the relative position of the supporting portion and the mounting window.
In some embodiments, which may include the above embodiments, the second adjustment device includes a first angular position stage and a second angular position stage; the first angle table is arranged on the bottom plate, the second angle table is arranged on the first angle table, and the supporting part is arranged on the second angle table; the rotation axes of the first angle station and the second angle station are vertical.
In some embodiments, which may include the above-described embodiments, the support portion is provided with a first direction detection device, and the mounting plate is provided with a second direction detection device.
In some embodiments, which may include the above embodiments, the supporting portion is provided with a pressure detection device, and the pressure detection device is connected with the sealing fitting piece and is used for detecting the pressure applied to the sealing fitting piece.
In some embodiments, which may include the above embodiments, the supporting portion includes a supporting seat and an abutting pillar; the supporting seat is connected with the bottom plate, a mounting hole perpendicular to the mounting plate is formed in the supporting seat, and the abutting column penetrates through the mounting hole; the top end of the abutting seat is used for installing the sealing fitting piece, and the pressure detection device is arranged in the installation hole and is located at the lower part of the abutting column.
In some embodiments, which may include the above embodiments, a limiting mechanism is disposed between the support pillar and the wall of the installation hole, and the limiting mechanism is configured to make a center line of the support pillar and a center line of the installation hole collinear.
The sealing element testing device provided by the embodiment of the disclosure can drive the sealing element and the sealing fitting piece to repeatedly contact and separate, and simulate the process of repeatedly contacting and separating the sealing element and the sealing fitting piece when a workpiece is repeatedly opened and closed; and simultaneously, acquiring images of the contact and separation of the sealing element and the sealing fitting piece in real time, and testing the formation process of the surface indentation of the sealing element under different preset conditions.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic perspective view illustrating a first sealing member testing apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic perspective view of a sealing member testing device according to an embodiment of the present disclosure;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic diagram of a seal and seal fitting installed in a seal testing apparatus provided by an embodiment of the present disclosure;
FIG. 5 is a partial enlarged view of portion A of FIG. 3;
fig. 6 is a partially enlarged view of a portion B in fig. 3.
Description of reference numerals:
1: a displacement structure;
2: an image acquisition device;
3: a seal member;
4: a sealing fitting;
5: a first direction detecting device;
6: a second direction detecting device;
7: a pressure detection device;
11: a fixed seat;
12: a displacement frame;
13: a drive device;
41: a seal fitting lower portion;
42: a seal fitting upper portion;
111: a base plate;
112: a first adjusting device;
113: a support portion;
114: a fixing plate;
121: a frame body;
122: mounting a plate;
123: a transparent plate;
124: mounting a beam;
125: a fixed beam;
126: first adjusting device
1121: a first angular table;
1122: a second angular position table;
1123: a first bottom structure;
1124: a first angle adjustment structure;
1125: a first swing structure;
1131: a supporting seat;
1132: supporting the column;
1133: mounting holes;
1134: mounting a slotted hole;
1135: a limiting mechanism;
1136: a first support base;
1137: a second support seat;
1138: and connecting the holes.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
When a workpiece (such as a valve, a door, a vacuum cup cover, a ball inflating nozzle and the like) is closed, the sealing fitting piece is matched with the sealing piece to realize sealing, so that gas or liquid is prevented from leaking. Specifically, the sealing fitting piece and the sealing element are contacted with each other and press the surface of the sealing element in a process of applying stress on the surface of the sealing element, and the surface of the sealing element is elastically deformed; when the workpiece is opened, the sealing fitting is subjected to a stress releasing process on the surface of the sealing element, the sealing fitting and the sealing element are separated from each other, and the surface of the sealing element which is elastically deformed is restored to an initial state.
When the workpiece is repeatedly opened and closed, repeated stress application and stress release are carried out on the surface of the sealing element by the sealing fitting piece, the contact area of the sealing fitting piece and the sealing element is small, the pressure intensity of the sealing fitting piece acting on the surface of the sealing element is large, and in the repeated stress application and stress release process, if the surrounding environment of the workpiece changes or the workpiece changes, the contact of the sealing fitting piece and the sealing element is influenced, so that the surface of the sealing element generates local plastic deformation, and an indentation is formed.
For example, when the sealing element and the sealing fitting are in contact with each other due to temperature changes of the workpiece, fluid state changes inside the workpiece, and changes of surrounding working conditions, force transient imbalance is generated between the sealing element and the sealing fitting, so that the sealing fitting or the sealing element generates small displacement, and the continuous accumulated small displacement can bring fretting wear, so that the surface of the sealing element generates indentation.
For another example, in order to avoid the phenomenon of clamping stagnation in the process of repeatedly opening and closing the workpiece, the fit clearance between the workpiece and the guide mechanism is usually designed to be large, so that the workpiece is prone to the condition of unbalanced stress in the movement process, the contact angle between the sealing fit piece and the sealing element is deflected, the contact area between the sealing fit piece and the sealing element after the angular deflection is smaller than that under the normal condition, the contact stress is more concentrated, and the sealing element is more prone to local plastic deformation to form an indentation. And the deflection direction and the deflection size of the contact angle are random, when the workpiece is closed next time, the deflection angle is uncontrollable, so that the position of the indentation when the workpiece is closed is changed, a typical double-fold eyelid effect in engineering is formed, and the sealing performance is influenced.
In the related art, the seal and the sealing fitting are usually detached from the corresponding devices, and the indentation on the seal is observed through a microscope to obtain the formation process and formation mechanism of the indentation. However, when the indentation on the surface of the sealing member is observed through a microscope, only the shape and depth of the indentation finally formed on the surface of the sealing member can be obtained, and the formation process of the indentation cannot be detected, and how the indentation is generated and removed cannot be known. Meanwhile, the indentation on the surface of the sealing element is the result of overlapping the indentations after the workpiece is opened and closed for many times, and the forming process of each single indentation cannot be known during microscope observation, so that the forming process and mechanism of the obtained indentation are inaccurate.
The embodiment of the disclosure provides a sealing element testing device, which comprises a displacement structure for installing a sealing element and a sealing matching element, wherein the displacement structure can drive the sealing element and the sealing matching element to repeatedly contact and separate and is used for simulating the repeated contact and separation process of the sealing element and the sealing matching element when a workpiece is repeatedly opened and closed; the displacement structure is also provided with an image acquisition device, and the image acquisition device is over against the contact area of the sealing element and the sealing matching piece; the image acquisition apparatus can acquire images when the sealing member and the seal fitting member are in contact and separated to detect the contact process between the sealing member and the seal fitting member in real time, thereby improving the accuracy of the obtained indentation formation process and mechanism. In addition, the image acquisition device can acquire images of each contact and separation of the sealing element and the sealing fitting piece, and can realize detection of single contact of the sealing element and the sealing fitting piece so as to further improve the accuracy of the obtained indentation forming process and mechanism.
Referring to fig. 1, a seal testing apparatus provided in an embodiment of the present disclosure includes: the displacement structure 1 is used for installing the sealing element 3 and the sealing matching piece 4, and the displacement structure 1 can drive the sealing element 3 and the sealing matching piece 4 to repeatedly contact and separate; the device further comprises an image acquisition device 2, wherein the image acquisition device 2 is arranged on the displacement structure 1, and the image acquisition device 2 is opposite to the contact area of the sealing member 3 and the sealing matching member 4 and is used for acquiring images when the sealing member 3 and the sealing matching member 4 are contacted and separated.
The mounting beam can further comprise a first mounting beam and a second mounting beam which are oppositely arranged, the driving assembly comprises a first driving assembly and a second driving assembly, the first mounting beam is connected with the first driving assembly, and the second mounting beam is connected with the second driving assembly; the sealing element 3 is fixed on the first mounting beam, the sealing matching piece 4 is fixed on the second mounting beam, the first driving assembly drives the first mounting beam to move towards the direction close to the second mounting beam, the second driving assembly drives the second mounting beam to move towards the direction close to the first mounting beam, so that the first mounting beam and the second mounting beam are close to each other, and the sealing element 3 can be in contact with the sealing matching piece 4; or the first driving assembly drives the first mounting beam to move towards the direction away from the second mounting beam, and the second driving assembly drives the second mounting beam to move towards the direction away from the first mounting beam, so that the first mounting beam and the second mounting beam are away from each other, and the sealing element 3 and the sealing matching piece 4 can be separated. The mounting beam can further comprise a fixing beam, two ends of the fixing beam are used for connecting the first mounting beam and the second mounting beam, a fixing support is further arranged on the fixing beam, the image acquisition device 2 is mounted on the fixing support and is opposite to a contact area of the sealing element 3 and the sealing fitting element 4, and images of the sealing element 3 and the sealing fitting element 4 in contact and separation are acquired.
Therefore, the sealing element testing device disclosed by the embodiment of the disclosure drives the sealing element and the sealing fitting piece to repeatedly contact and separate through the displacement structure, and simulates the process that the sealing element and the sealing fitting piece repeatedly contact and separate when a workpiece is repeatedly opened and closed; and the image acquisition equipment arranged on the displacement structure acquires images of the sealing element and the sealing fitting piece in contact and separation in real time, tests the formation process of the surface indentation of the sealing element under different preset conditions, and realizes the detection of single contact of the sealing element and the sealing fitting piece. As shown in fig. 1, 2 and 3, the displacement structure 1 may include a fixed seat 11, a displacement frame 12 and a driving device 13; the displacement frame 12 is arranged at the upper part of the fixed seat 11, and the sealing matching piece 4 is used for being arranged on the fixed seat 11; the displacement frame 12 includes a frame body 121 and a mounting plate 122 provided on the frame body 121, the mounting plate 122 being provided perpendicular to the relative movement direction (vertical direction in fig. 1 and 2) of the seal member 3 and the seal fitting 4, the seal member 3 being intended to be provided on the mounting plate 122; the driving device 13 is connected with the frame body 121 and the fixing base 11, and the driving device 13 is used for driving the frame body 121 to move relative to the fixing base 11.
For example, in the orientation shown in fig. 1 and 2, the frame body 121 may be at least two vertically disposed support beams, which are uniformly distributed on the upper portion of the fixing base 11 and disposed around the periphery of the fixing base 11. At this time, the mounting plate 122 is horizontally disposed, a support beam is correspondingly disposed at each corner of the mounting plate 122, and the sealing member 3 is disposed on the mounting plate 122. The frame body 121 is driven by the driving device 13 to move in a vertical direction relative to the fixing base 11, and simultaneously drives the mounting plate 122 to move relative to the fixing base 11, and the mounting plate 122 drives the sealing element 3 to move relative to the fixing base 11, so that the sealing element and the sealing fitting element are in contact with or separated from each other.
For example, as shown in fig. 1, the frame body 121 includes four vertically arranged support beams, which are uniformly distributed on the upper portion of the fixing base 11 and arranged around the periphery of the fixing base 11. The mounting plate 122 can be a rectangular plate, and the horizontal setting, and four corners of the mounting plate 122 correspond to and set up a supporting beam, specifically, four corners of the mounting plate 122 are embedded in the notches formed on the four frame bodies 121, so that the mounting plate 122 keeps horizontal fixation.
For example, as shown in fig. 2, when the mounting plate 122 is a horizontally disposed rectangular plate, the frame body 121 further includes at least two horizontally disposed mounting beams 124, the mounting beams 124 are disposed between two vertically disposed supporting beams, and two ends of the mounting beams 124 are respectively vertically connected with the two vertically disposed supporting beams. The two opposite sides of the mounting plate 122 are respectively arranged on two opposite mounting beams 124, and the mounting beams 124 are used for supporting and fixing the mounting plate 122, so that the mounting plate 122 is kept horizontally fixed. Or two opposite edges of the mounting plate 122 are respectively embedded into the notches of two oppositely arranged mounting beams 124, and the mounting beams 124 are used for supporting and fixing the mounting plate 122, so that the mounting plate 122 is kept horizontally fixed.
When the frame body 121 moves away from the fixed seat 11 (in the orientation shown in fig. 2, moves upward) under the driving of the driving device 13, the frame body 121 drives the mounting plate 122 to move away from the fixed seat 11 (in the orientation shown in fig. 2, moves upward), and the sealing member 3 will be away from the sealing fitting member 4. When the frame body 121 moves toward the fixed seat 11 under the driving of the driving device 13 (in the orientation shown in fig. 2, it moves downward), the frame body 121 drives the mounting plate 122 to move toward the fixed seat 11 (in the orientation shown in fig. 2, it moves downward), and the sealing member 3 will approach and contact the sealing fitting member 4.
Therefore, the sealing element testing device of the embodiment of the present disclosure installs the sealing fitting piece 4 through the fixing seat 11 of the displacement structure 1, installs the sealing element 3 through the displacement frame 12 arranged on the upper portion of the fixing seat 11, and drives the frame body 121 of the displacement frame 12 to move relative to the fixing seat 11 through the driving device 13, so that the sealing element 3 and the sealing fitting piece 4 repeatedly contact and separate, and the process of repeatedly contacting and separating the sealing element 3 and the sealing fitting piece 4 when the workpiece is repeatedly opened and closed is simulated.
Referring to fig. 4, in the present embodiment, a mounting window is disposed on the mounting plate 122, a transparent plate 123 is disposed in the mounting window, and the sealing member 3 is disposed on the transparent plate 123; image acquisition equipment 2 sets up in the one side that mounting panel 122 deviates from fixing base 11, and image acquisition equipment 2 is connected with support body 121, and image acquisition equipment 2 is just setting up the installation window. The image capturing device 2 photographs the seal 3 on the transparent plate 123 through the transparent plate 123 so that the image capturing device 2 can smoothly record the formation of the indentations on the seal 3.
For example, a through hole penetrating through the mounting plate 122 may be formed in the mounting plate 122 to form a mounting window, a transparent plate 123 matching with the mounting window is embedded in the through hole, and the transparent plate 123 is disposed near one side of the sealing fitting member 4; alternatively, a through hole penetrating the mounting plate 122 may be formed in the mounting plate 122 to form a mounting window, the transparent plate 123 may be laid at the position of the mounting window on the mounting plate 122 (in this case, the size of the mounting window is larger than that of the transparent plate 123), and the transparent plate 123 may be disposed near one side of the fixed sealing fitting 4.
Exemplarily, all be equipped with the through-hole on sealing member 3 and the transparent plate 123, after the transparent plate 123 was located in the installation window, pass the through-hole on sealing member 3 and the transparent plate 123 with the connecting piece in proper order for sealing member 3 is fixed on transparent plate 123, guarantees that sealing member 3 can not take place to rock in the installation window.
Therefore, the sealing element testing device of the embodiment of the present disclosure installs the sealing element 3 through the installation plate 122 on the displacement frame 12, and if the performance of the sealing element 3 of different shapes and different materials needs to be tested, only the sealing element 3 needs to be detached from the installation window of the installation plate 122 and then replaced, so that the operation is simple and convenient. And the mounting plate 122 is used as a carrier to support the sealing element 3, compared with the scheme of directly mounting the sealing element 3 on the displacement frame 12, the method is safer and more reliable, and the sealing element 3 can not be damaged when the sealing performance of the sealing element 3 is simulated. Meanwhile, the image acquisition device 2 faces the installation window on the installation plate 122, so that images of the contact and separation of the sealing element and the sealing fitting piece can be accurately acquired in real time.
The shapes and thicknesses of the mounting plate 122, the transparent plate 123, and the sealing member 3 of the present embodiment are set as the case may be, and are not limited herein.
Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, a bottom end of the frame body 121 facing away from the fixing base 11 is provided with a fixing beam 125 extending in a direction parallel to the mounting plate 122, the image capturing device 2 is connected to the fixing beam 125 through a first adjusting device 126, and the first adjusting device 126 is used for adjusting a relative position of the image capturing device 2 and the mounting window 123.
Specifically, the first adjusting device 126 is configured to mount and fix the image capturing apparatus 2, and simultaneously can drive the image capturing apparatus 2 to move, so as to adjust the relative position between the image capturing apparatus 2 and the mounting window 123, so that the image capturing apparatus 2 can capture images of the sealing member 3 and the seal fitting member 4 in different directions when they are in contact with each other and separated from each other.
For example, the first adjusting device 126 may be a bracket with a ring shape, a buckle extends from the outer periphery of the bracket, the buckle is clamped on the fixed beam 125, and the image capturing device 2 passes through the ring-shaped opening of the bracket, so that the first adjusting device 126 is connected with the fixed beam 125. Wherein the fixed beam 125 is parallel to the mounting plate 122, the fixed beam 125 may be a slide rail, and the image capturing device 2 may be a camera. The camera lens of camera wears to establish the annular mouth of first adjusting device 126 for the camera is installed on first adjusting device 126, and the buckle joint of first adjusting device 126 is on the slide rail, and with slide rail sliding connection, can drive the camera and slide preset distance on the slide rail, diversified record sealing member 3's state.
For example, in the orientation shown in fig. 1 and 2, the frame body 121 may include four support beams vertically arranged, the mounting plate 122 is formed in a rectangular shape and horizontally arranged, and four corners of the mounting plate 122 are connected to the four frame bodies 121, respectively. At this time, three fixed beams 125 may be included, and the three fixed beams 125 are all located on the same horizontal plane, wherein two fixed beams 125 are parallel to each other, and the two parallel fixed beams 125 are used to connect with the four frame bodies 121 to serve as support beams; the two fixed beams 125 are connected by the remaining one of the fixed beams 125, the remaining one of the fixed beams 125 is used for mounting a first adjusting device 126, and the first adjusting device 126 slides along the remaining one of the fixed beams 125.
Exemplarily, five fixed beams 125 may be further included, and the five fixed beams 125 are all located on the same horizontal plane, wherein four fixed beams 125 are connected end to form a rectangular frame body, and the rectangular frame body is used for being connected with four frame bodies 121 to serve as a supporting beam; the other one of the fixed beams 125 is connected to the middle of the rectangular frame body for mounting the first adjusting device 126, and the first adjusting device 126 slides along the other one of the fixed beams 125.
Therefore, the sealing member testing device of the present embodiment installs the image capturing device 2 through the first adjusting device 126, the first adjusting device 126 is connected to the fixed beam 125, and can slide along the fixed beam 125, and will drive the image capturing device 2 to slide along the fixed beam 125 as well when sliding along the fixed beam 125, thereby realizing adjusting the relative position of the image capturing device 2 and the installation window 123, so that the image capturing device 2 can not only monitor and record the process of repeated contact and separation of the sealing mating member 4 and the sealing member 3 in real time, but also can detect the forming process of the indentation on the sealing member 3 and the disappearance process of the indentation after the sealing mating member 4 and the sealing member 3 are in mutual contact in real time. At the same time, it is ensured that the image acquisition device 2 can monitor the state of the sealing area where the seal fitting 4 and the seal member 3 contact each other in various orientations.
Referring to fig. 1 and fig. 2, in the present embodiment, the fixing base 11 includes a bottom plate 111, a second adjusting device 112 disposed on the bottom plate 111, and a supporting portion 113; the driving device 13 is connected to the base plate 111, the support portion 113 is disposed on the second adjusting device 112, the sealing fitting 4 is configured to be disposed on the support portion 113, and the second adjusting device 12 is configured to adjust a relative position of the support portion 113 and the mounting window 123.
Illustratively, the bottom plate 111 is horizontally disposed and formed in a rectangular shape, and is used for supporting the second adjusting device 112 and the supporting portion 113, the driving devices 13 are respectively connected to four corners of the bottom plate 111, one ends of the four driving devices 13 far away from the bottom plate 111 are all connected to the frame body 121, and the four driving devices 13 jointly drive the frame body 121 to move relative to the bottom plate 111, so as to drive the sealing element 3 on the mounting plate 122 to move relative to the bottom plate 111. The driving device 13 may be a piezoelectric driver, which converts input electric energy into output mechanical energy by using the inverse piezoelectric effect of the piezoelectric ceramic material to realize displacement driving. The driving device 13 may also be a multilayer piezoelectric stack driver, which is formed by stacking multiple piezoelectric ceramic sheets and electrode plates, where the multiple piezoelectric ceramic sheets form multiple micro-displacement output units, and the multi-layer piezoelectric ceramic sheets have large displacement deformation and large output force, so as to realize nano-scale displacement driving, and in this embodiment, ensure the micro-displacement (nano-scale) of the frame body 121. For convenience of installation, the piezoelectric stack driver is fixed on the bottom plate 111, so that the displacement output end of the piezoelectric stack driver is connected with the frame body 121, and when the displacement output end freely extends and contracts, the frame body 121 is driven to move.
Referring to fig. 1, 2, 3 and 5, in the present embodiment, the second adjusting device 12 is horizontally disposed on the bottom plate 111 for driving the supporting portion 113 to rotate by a predetermined angle, so as to adjust the position of the sealing fitting 4 relative to the mounting window 123.
Illustratively, the second adjustment device 112 includes a first angular stage 1121 and a second angular stage 1122; the first angular stage 1121 is disposed on the base plate 111, the second angular stage 1122 is disposed on the first angular stage 1121, and the support portion 113 is disposed on the second angular stage 1122; the axes of rotation of the first angled platform 1121 and the second angled platform 1122 are perpendicular.
The first angular stage 1121 drives the supporting portion 113 to swing on the first plane by a first preset angle, and the second angular stage 1122 drives the first angular stage 1121 and the supporting portion 113 to swing on the second plane by a second preset angle; the first plane and the second plane are perpendicular to each other. When the second adjusting device 112 adjusts the position of the sealing fitting member 4 relative to the mounting window 123, the second angular table 1122 is kept not operating, and the first angular table 1121 is adjusted to swing, so that the first angular table 1121 drives the first angular table 1121 and the supporting portion 113 to swing together; and then, the first angular table 1121 is kept not working, and the second angular table 1122 is adjusted, so that the second angular table 1122 drives the supporting portion 113 to swing.
Illustratively, as shown in fig. 5, the first positioning stage 1121 includes: the first bottom structure 1123, the first angle adjusting structure 1124 and the first swinging structure 1125, one side surface of the first bottom structure 1123 is arranged on the bottom plate 111, the other side surface of the first bottom structure 1123, which is far away from the bottom plate 111, is formed with an arc-shaped surface, the side wall of the arc-shaped surface is provided with scales, and the first swinging structure is matched with the arc-shaped surface and can swing on the arc-shaped surface in a reciprocating manner; first angle adjustment structure 1124 is connected with first swing structure 1125 for control first swing structure 1125 swing angle on the arcwall face, and can observe the specific angle of swing according to the scale on the lateral wall of arcwall face during the swing. The structure and operation of the second angular stage 1122 is identical to that of the first angular stage 1121, and therefore, will not be described in detail herein.
The forming process of the surface indentation of the sealing element is different under different preset conditions, wherein the different preset conditions comprise: the environment (temperature, pressure) of the sealing element and the sealing fitting, the contact angle of the sealing element and the sealing fitting, and the contact pressure of the sealing element and the sealing fitting. In order to simulate the repeated contact and separation process of the sealing fitting 4 and the sealing member 3 under different contact angles, the present embodiment adjusts the installation angle of the sealing fitting 4 through the first angular position stage 1121 and the second angular position stage 1122, so as to change the contact angle between the sealing fitting 4 and the sealing member 3, and thus the sealing fitting 4 and the sealing member 3 can contact each other at any angle.
In the embodiment, in the initial state, the sealing element 3 is horizontally arranged, the sealing fitting element 4 is vertically arranged, the sealing element and the sealing fitting element are vertically contacted with each other, and an in-situ indentation is formed on the sealing element 3; when the force between the workpieces is unbalanced, the contact angle between the sealing fitting part 4 and the sealing member 3 will be changed, and an off-position indentation is formed on the sealing member 3. When the contact angle between the sealing fitting piece 4 and the sealing element 3 is changed continuously, indentations with different depths and different shapes are formed on different positions of the sealing element 3 every time the workpiece is opened and closed, subsequent indentations can be formed on the existing indentations, and silver marks are formed around the indentations after the operations are repeated.
In this embodiment, the included angle between the sealing mating member 4 and the vertical axis is adjusted by the first angular position platform 1121 and the second angular position platform 1122, so that the sealing mating member 4 is inclined, when the workpiece is repeatedly opened and closed, due to the fact that the contact angle between the sealing mating member 4 and the sealing element 3 is changed due to unbalanced stress, the difference between the original position indentation and the off-position indentation is observed, and meanwhile, the process of forming silver lines around the indentation is observed and recorded, so that support is provided for researching the accumulated superposition effect of the indentation.
Referring to fig. 2, fig. 3, fig. 5 and fig. 6, in the present embodiment, a first direction detecting device 5 is disposed on the supporting portion 113, and the first direction detecting device 5 is used for detecting an installation angle of the supporting portion 113 in real time; the mounting plate 122 is provided with a second direction detection device 6, and the second direction detection device 6 is used for detecting the inclination angle of the mounting plate 122 in real time.
The installation angle of the supporting portion 113 represents the installation angle of the sealing member 4, the inclination angle of the installation plate 122 represents the installation angle of the sealing member 3, and those skilled in the art can know at which angle the indentation state of the surface of the sealing member 3 is currently obtained according to the angle information fed back by the first direction detecting device 5 and the second direction detecting device 6, and also can adjust the installation angle of the sealing member 4 and the installation angle of the sealing member 3 according to the feedback information, so as to simulate the formation process of the indentation at various contact angles.
For example, as shown in fig. 2, 3 and 6, the second direction detecting device 6 is disposed at any position on the mounting plate 122, and is horizontally disposed on the mounting plate 122, so as to accurately obtain the mounting angle of the mounting plate 122 as the mounting plate 122 moves or swings. The fixing plate 114 is connected to the supporting portion 113, and the first direction detecting device 5 is disposed on the fixing plate 114, so that the first direction detecting device 5 can be supported and fixed, and the installation angle of the supporting portion 113 can be accurately obtained by the first direction detecting device 5 swinging or moving along with the supporting portion 113.
In the present embodiment, as shown in fig. 5 and 6, the supporting portion 113 is provided with a pressure detection device 7, and the pressure detection device 7 is connected with the sealing fitting 4 for detecting the pressure applied to the sealing fitting 4. The pressure detection device 7 can detect the contact pressure between the sealing fitting piece 4 and the sealing element 3 in real time, and a person skilled in the art can obtain the pressure contact of the current indentation state of the surface of the sealing element 3 according to the pressure information fed back by the pressure detection device 7, and can also adjust the installation positions of the sealing fitting piece 4 and the sealing element 3 according to the feedback information, so as to simulate the formation process of indentations under various contact pressures.
For example, the first direction detecting device 5 and the second direction detecting device 6 may be direction sensors, which measure the acceleration and the gravity by sensing the magnitude of the inertial force of an object in a certain direction, measure the magnitude of the component force of an object in two directions orthogonal to the gravity, determine the angle of the object in the horizontal direction, and convert the direction signals into electrical signals. The pressure detection means 7 may be a pressure sensor by sensing a pressure signal and converting the pressure signal into an electrical signal. Specifically, the pressure sensor comprises a sensing element, a conversion element and a measuring circuit, the sensing element is connected with the component to be measured (the supporting part 113), after the component to be measured (the supporting part 113) applies pressure to the sensing element, the conversion element converts the pressure of the sensing element into an electric signal, and the electric signal is output through the measuring circuit, so that the pressure applied to the component to be measured (the supporting part 113) is obtained.
Referring to fig. 3, fig. 4 and fig. 5, in the present embodiment, the supporting portion 113 includes a supporting seat 1131 and a supporting pillar 1132; the support 1131 is connected with the bottom plate 111, the support 1131 is provided with a mounting hole 1133 perpendicular to the mounting plate 122, and the abutting column 1132 penetrates through the mounting hole 1133; the top end of the abutting column 1132 is used for installing the sealing fitting piece 4, and the pressure detection device 7 is arranged in the installation hole 1133 and is located at the lower part of the abutting column 1132.
In the orientation shown in fig. 5, the pressure detection device 7 is disposed at the bottom of the mounting hole 1133 inside the support seat 1131, the bottom end of the abutting column 1132 is disposed above the pressure detection device 7, and the top end of the abutting column 1132 is used for mounting the sealing fitting member 4. In this embodiment, the abutting column 1132 is in contact with the pressure detection device 7, and when the sealing member 3 is in contact with the sealing fitting member 4, the sealing fitting member 4 transmits the contact pressure to the abutting column 1132, and is received by the pressure detection device 7 at the bottom end of the abutting column 1132. Therefore, the support portion 113 of the present embodiment can not only mount the stationary seal fitting 4 but also accurately obtain the contact pressure between the seal member 3 and the seal fitting 4. Meanwhile, the sealing fitting piece 4 is made of different materials and has different contact pressure with the sealing element 3, and when a plurality of different sealing fitting pieces 4 need to be simulated, the sealing fitting piece 4 only needs to be detached from the top end of the abutting column 1132 and replaced.
Illustratively, as shown in fig. 4, the top end of the abutment post 1132 is formed with a mounting slot 1134, and the sealing fitting 4 includes a sealing fitting upper portion 42 and a sealing fitting lower portion 41, the sealing fitting lower portion 41 is disposed within the mounting slot 1134, and the sealing fitting upper portion 42 extends out of the mounting slot 1134 for contacting the sealing element 3.
Illustratively, as shown in fig. 6, the support 1131 includes: first supporting seat 1136 and second supporting seat 1137, first supporting seat 1136 is connected with bottom plate 111, and first supporting seat 1136 top is located to second supporting seat 1137, and has all seted up connecting hole 1138 on first supporting seat 1136 and the second supporting seat 1137, and the connecting piece passes connecting hole 1138 on first supporting seat 1136 and the second supporting seat 1137 in proper order for first supporting seat 1136 and second supporting seat 1137 can dismantle the connection.
To integrated into one piece's supporting seat 1131, when needing to be changed pressure measurement device 7, need from top to bottom dismantle all the subassemblies that set up on supporting seat 1131, nevertheless to detachable supporting seat 1131, only need dismantle whole second supporting seat 1137, just can carry out pressure measurement device 7's installation and change.
Referring to fig. 6, in the present embodiment, a limiting mechanism 1135 is disposed between the top pillar 1132 and the hole wall of the installation hole 1133, and the limiting mechanism 1135 is used to make the center line of the top pillar 1132 and the center line of the installation hole 1133 be collinear.
Exemplarily, limiting mechanism 1135 can be fixed cover, in mounting hole 1133 was located to fixed cover, and set up around the periphery that supports top post 1132 for carry on spacingly to supporting top post 1132, guarantee to support top post 1132 can not take place the skew in mounting hole 1133.
Exemplarily, limiting mechanism 1135 can be a plurality of vertically arranged balls, and a plurality of vertically arranged balls are arranged in mounting hole 1133 and surround the periphery setting in support post 1132 for limiting support post 1132, guarantee that support post 1132 can not shift in mounting hole 1133.
In the embodiment of the present disclosure, the method further includes: a control unit.
The control unit is electrically connected to the driving device 13, and is configured to send a control signal to the driving device 13, and after the driving device 13 receives the control signal, the driving device 121 is moved in a direction away from the bottom plate 111, or the driving device 13 is controlled to drive the frame 121 to move in a direction close to the bottom plate 111. When the driving device 13 drives the frame body 121 to move in a direction away from the bottom plate 111, the frame body 121 drives the mounting plate 122 to move in a direction away from the supporting portion 113, so that the sealing fitting piece 4 is separated from the sealing element 3; when the driving device 13 drives the frame body 121 to move toward the direction approaching the bottom plate 111, the frame body 121 will drive the mounting plate 122 to move toward the direction approaching the supporting portion 113, so that the sealing fitting 4 and the sealing member 3 contact each other.
The control unit is electrically connected to the first direction detection device 5 to receive the inclination angle of the supporting portion 113 in the vertical direction detected by the first direction detection device 5 in real time, that is, the inclination angle of the sealing fitting 4 in the vertical direction detected by the first direction detection device 5 in real time.
The control unit is electrically connected to the second direction detecting device 6 to receive the inclination angle of the mounting plate 122 in the horizontal direction detected by the second direction detecting device 6 in real time, that is, the inclination angle of the sealing member 3 in the horizontal direction detected by the second direction detecting device 6 in real time.
The control unit is electrically connected to the first angular stage 1121 and the second angular stage 1122 of the angle adjustment unit 2, respectively, and controls the first angular stage 1121 and the second angular stage 1122 according to the received inclination angle of the sealing member 3 in the horizontal direction and the inclination angle of the sealing fitting member 4 in the vertical direction, and the actual simulation requirement, so as to further adjust the inclination angle of the sealing fitting member 4 in the vertical direction. So that the test apparatus of the present embodiment can monitor the contact condition of the seal fitting 4 and the seal member 3 at various angles.
The control unit is electrically connected to the image capturing device 2 and the first adjusting device 126, and can receive an indentation forming process and an indentation disappearing process of the sealing interface captured by the image capturing device 2 in real time, and control the first adjusting device 126 to move on the fixed beam 125, so that the image capturing device 2 can capture the sealing interface at each angle in each direction.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present disclosure, and not for limiting the same; while the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.
Claims (10)
1. A seal testing apparatus, comprising:
a displacement structure for mounting a seal and a sealing engagement piece, the displacement structure for driving the seal and the sealing engagement piece to repeatedly contact and separate;
and the image acquisition equipment is arranged on the displacement structure and is opposite to the contact area of the sealing element and the sealing matching piece, and is used for acquiring images when the sealing element and the sealing matching piece are contacted and separated.
2. The seal testing apparatus of claim 1,
the displacement structure comprises a fixed seat, a displacement frame and a driving device;
the displacement frame is arranged at the upper part of the fixed seat, and the sealing matching piece is arranged on the fixed seat;
the displacement frame comprises a frame body and an installation plate arranged on the frame body, the installation plate is perpendicular to the relative movement direction of the sealing element and the sealing matching piece, and the sealing element is arranged on the installation plate;
the driving device is connected with the rack body and the fixed seat and is used for driving the rack body to move relative to the fixed seat.
3. The seal testing apparatus of claim 2,
the mounting plate is provided with a mounting window, a transparent plate is arranged in the mounting window, and the sealing element is arranged on the transparent plate;
the image acquisition equipment sets up the mounting panel deviates from one side of fixing base, just the image acquisition equipment with the support body is connected, the image acquisition equipment is just right installation window sets up.
4. The seal testing apparatus of claim 3,
the support body deviates from the bottom of fixing base has along being on a parallel with the fixed beam that the mounting panel direction extends, image acquisition equipment through first adjusting device with the fixed beam is connected, first adjusting device be used for adjusting image acquisition equipment with the relative position of installation window.
5. The seal testing apparatus of claim 3,
the fixed seat comprises a bottom plate, a second adjusting device arranged on the bottom plate and a supporting part;
the driving device is connected with the bottom plate, the supporting portion is arranged on the second adjusting device, the sealing fitting piece is arranged on the supporting portion, and the second adjusting device is used for adjusting the relative position of the supporting portion and the mounting window.
6. The seal testing apparatus of claim 5,
the second adjusting device comprises a first angle table and a second angle table;
the first angle table is arranged on the bottom plate, the second angle table is arranged on the first angle table, and the supporting part is arranged on the second angle table;
the rotation axes of the first angle station and the second angle station are vertical.
7. The seal testing apparatus of claim 6,
the supporting part is provided with a first direction detection device, and the mounting plate is provided with a second direction detection device.
8. Seal testing device according to any of claims 5 to 7,
and the supporting part is provided with a pressure detection device, and the pressure detection device is connected with the sealing fitting piece and used for detecting the pressure applied to the sealing fitting piece.
9. The seal testing apparatus of claim 8,
the supporting part comprises a supporting seat and an abutting column;
the supporting seat is connected with the bottom plate, a mounting hole perpendicular to the mounting plate is formed in the supporting seat, and the abutting column penetrates through the mounting hole;
the top end of the abutting seat is used for installing the sealing fitting piece, and the pressure detection device is arranged in the installation hole and is located at the lower part of the abutting column.
10. The seal testing apparatus of claim 9,
and a limiting mechanism is arranged between the abutting column and the hole wall of the mounting hole and is used for enabling the central line of the abutting column to be collinear with the central line of the mounting hole.
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| CN202111282930.7A CN114088556B (en) | 2021-11-01 | 2021-11-01 | Sealing element testing device |
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