CN114088556B - Sealing element testing device - Google Patents

Abstract

The embodiments of the present disclosure belong to the technical field of sealing element testing, and in particular relate to a sealing element testing device. The embodiments of the present disclosure aim to solve the problem of inaccurate acquisition of the indentation forming process on the sealing member in the related art. The seal testing device in the embodiment of the present disclosure includes a displacement structure for installing the seal and the seal fitting. The displacement structure can drive the seal and the seal fit to repeatedly contact and separate, simulating the seal and the seal fit when the workpiece is repeatedly opened and closed. The process of repeated contact and separation; the image acquisition equipment set on the displacement structure can obtain the images of the contact and separation of the seal and the sealing partner in real time, and test the formation process of the indentation on the surface of the seal under different preset conditions.

Description

Seal test device

technical field

The embodiments of the present disclosure relate to the technical field of seal testing, and in particular, to a seal testing device.

Background technique

Sealing parts such as rubber for sealing valves, cushioning pads on doors, sealing pads for thermos cup lids, and sealing cores for ball inflating nozzles are all soft materials, and these sealing parts are used in conjunction with harder sealing parts. , to achieve sealing. Over time, indentations can form where the seal contacts the seal partner.

In the related art, usually the seal and the sealing fitting are disassembled from the corresponding equipment, and the indentation on the seal is observed through a microscope, so as to obtain the formation process and mechanism of the indentation. However, the formation process and mechanism of the indentation are obtained by analyzing the formation process and mechanism of the indentation by disassembling the seal and the sealing fitting from the equipment, resulting in inaccurate formation process and mechanism of the indentation.

Contents of the invention

Embodiments of the present disclosure provide a seal testing device to solve the problem of inaccurate acquisition of the indentation forming process on the seal.

In one aspect, an embodiment of the present disclosure provides a seal testing device, including: a displacement structure for installing a seal and a seal fitting, and the displacement structure for driving the seal and the seal The matching parts are repeatedly contacted and separated; the image acquisition device is arranged on the displacement structure and faces the contact area between the sealing part and the sealing fitting, and is used to capture the sealing part and the sealing part Images of the sealing fits described above when they come into contact and separate.

Through the above settings, the process of repeated contact and separation of the seal and the seal fitting when the workpiece is repeatedly opened and closed is simulated, and at the same time the images of the seal and the seal fitting are obtained in real time when they are in contact and separated, and the indentation on the surface of the seal is tested under different preset conditions. Formation process.

In some embodiments that may include the above-mentioned embodiments, the displacement structure includes a fixed seat, a displacement frame and a driving device; the displacement frame is arranged on the upper part of the fixed seat, and the sealing fitting is used to be arranged on the on the fixed seat; the displacement frame includes a frame body and a mounting plate arranged on the frame body, and the mounting plate is arranged perpendicular to the relative moving direction of the sealing member and the sealing fitting, and the sealing member is used for It is arranged on the mounting plate; the driving device is connected with the frame body and the fixing seat, and the driving device is used to drive the frame body to move relative to the fixing seat.

In some embodiments that may include the above-mentioned embodiments, an installation window is arranged on the installation plate, a transparent plate is arranged in the installation window, and the sealing member is used to be arranged on the transparent plate; the image acquisition device It is arranged on the side of the installation plate away from the fixing seat, and the image acquisition device is connected to the frame body, and the image acquisition device is arranged facing the installation window.

In some embodiments that may include the above-mentioned embodiments, the bottom end of the frame body away from the fixed seat has a fixed beam extending in a direction parallel to the installation plate, and the image acquisition device communicates with the fixed beam through the first adjusting device. The fixed beam is connected, and the first adjustment device is used to adjust the relative position of the image acquisition device and the installation window.

In some embodiments that may include the above-mentioned embodiments, the fixed base includes a bottom plate, a second adjustment device disposed on the bottom plate, and a support portion; the driving device is connected to the bottom plate, and the support portion is disposed on the bottom plate On the second adjustment device, the sealing fitting is used to be arranged on the support part, and the second adjustment device is used to adjust the relative position of the support part and the installation window.

In some embodiments that may include the above-mentioned embodiments, the second adjustment device includes a first angle platform and a second angle platform; the first angle platform is arranged on the bottom plate, and the second angle platform The position platform is arranged on the first angle platform, and the support part is arranged on the second angle platform; the rotation axes of the first angle platform and the second angle platform are perpendicular to each other.

In some embodiments that may include the above-mentioned embodiments, a first direction detection device is provided on the support part, and a second direction detection device is provided on the mounting plate.

In some embodiments that may include the above-mentioned embodiments, a pressure detection device is provided on the support part, and the pressure detection device is connected with the sealing fitting and used for detecting the pressure on the sealing fitting.

In some embodiments that may include the above-mentioned embodiments, the support portion includes a support base and a propping column; the support base is connected to the bottom plate, and the support base is provided with a mounting hole perpendicular to the mounting plate , the abutment column is passed through the installation hole; the top end of the abutment seat is used to install the sealing fitting, the pressure detection device is arranged in the installation hole, and is located in the abutment the lower part of the column.

In some embodiments that may include the above-mentioned embodiments, a limit mechanism is provided between the abutment column and the hole wall of the installation hole, and the limit mechanism is used to make the center line of the abutment column and the center line of the abutment column The centerlines of the above mounting holes are collinear.

The embodiment of the present disclosure provides a seal testing device, which can drive the seal and the seal fitting to repeatedly contact and separate, and simulate the process of the seal and the seal fitting repeatedly contacting and separating when the workpiece is repeatedly opened and closed; The images of contact and separation between parts and sealing mating parts are used to test the formation process of indentation on the surface of sealing parts under different preset conditions.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a three-dimensional structural schematic diagram of a seal testing device provided by an embodiment of the present disclosure;

Fig. 2 is a three-dimensional structural schematic diagram II of a seal testing device provided by an embodiment of the present disclosure;

Fig. 3 is the sectional view of Fig. 2;

Fig. 4 is a schematic structural diagram of a seal and a seal fitting installed in a seal test device provided by an embodiment of the present disclosure;

Fig. 5 is a partially enlarged view of part A in Fig. 3;

FIG. 6 is a partially enlarged view of part B in FIG. 3 .

Explanation of reference signs:

1: displacement structure;

2: Image acquisition equipment;

3: seal;

4: Seal fittings;

5: The first direction detection device;

6: Second direction detection device;

7: Pressure detection device;

11: fixed seat;

12: displacement frame;

13: drive device;

41: the lower part of the sealing fitting;

42: the upper part of the sealing fitting;

111: bottom plate;

112: the first adjusting device;

113: support part;

114: fixed plate;

121: frame body;

122: mounting plate;

123: transparent board;

124: installation beam;

125: fixed beam;

126: First adjustment device

1121: first corner platform;

1122: second corner platform;

1123: the first bottom structure;

1124: the first angle adjustment structure;

1125: the first swing structure;

1131: support seat;

1132: Resist the top column;

1133: mounting hole;

1134: installation slot;

1135: limit mechanism;

1136: the first support seat;

1137: the second support seat;

1138: connection hole.

By means of the above-mentioned drawings, certain embodiments of the present disclosure have been shown and will be described in more detail hereinafter. These drawings and written description are not intended to limit the scope of the disclosed concept in any way, but to illustrate the disclosed concept for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments It is a part of the embodiments of the present disclosure, but not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

When the workpiece (such as: valves, doors, thermos cup lids, ball inflation nozzles, etc.) is closed, the sealing fittings cooperate with the sealing parts to achieve sealing, thereby preventing gas or liquid leakage. Specifically, in the process of applying stress on the surface of the sealing member by the sealing member, the sealing member and the sealing member are in contact with each other and squeeze the surface of the sealing member, and the surface of the sealing member is elastically deformed; when the workpiece is opened, the sealing member is in the process of sealing During the stress release process on the surface of the part, the sealing part and the sealing part are separated from each other, and the surface of the sealing part that has undergone elastic deformation will return to its original state.

When the workpiece is opened and closed repeatedly, the seal fitting will repeatedly apply stress and release stress on the surface of the seal, while the contact area between the seal fit and the seal is small, and the pressure exerted by the seal fit on the surface of the seal is relatively large , in the process of repeated stress application and stress release, if the surrounding environment of the workpiece changes, or the workpiece itself changes, it will affect the contact between the seal fitting and the seal, causing local plastic deformation on the surface of the seal, forming an indentation .

Exemplarily, changes in the temperature of the workpiece, changes in the fluid state inside the workpiece, changes in the surrounding working conditions, etc. will cause a transient force imbalance between the seal and the sealing partner when the seal and the sealing partner are in contact, resulting in The small displacement of the sealing partner or the seal will cause fretting wear and cause indentation on the surface of the seal due to the accumulated small displacement.

In other examples, in order to avoid the phenomenon of jamming during the repeated opening and closing of the workpiece, the fit gap between the workpiece and the guide mechanism is usually designed to be relatively large, which makes the workpiece prone to unbalanced force during the movement process, resulting in The contact angle between the seal fitting and the seal is deflected. After the angle is deflected, the contact area between the seal fit and the seal will be smaller than the normal contact area, the contact stress is more concentrated, and the seal is more likely to be localized. Plastic deformation to form indentations. Moreover, the direction and size of the deflection of the contact angle are random. When the next closing, due to the uncontrollable deflection angle, the position of the indentation will change when the workpiece is closed, forming a typical "double eyelid effect" in engineering. Sealing performance.

In the related art, usually the seal and the sealing fitting are disassembled from the corresponding equipment, and the indentation on the seal is observed through a microscope, so as to obtain the formation process and mechanism of the indentation. However, when the indentation on the surface of the seal is observed through a microscope, only the shape and depth of the final indentation formed on the surface of the seal can be obtained, and the formation process of the indentation cannot be detected, nor can it be known how the indentation is produced and how to eliminate it . At the same time, the indentation on the surface of the seal is the result of superposition of the indentation after multiple opening and closing of the workpiece. The formation process of each single indentation cannot be known during microscope observation, resulting in inaccurate formation process and mechanism of the obtained indentation.

An embodiment of the present disclosure provides a seal testing device, which includes a displacement structure for installing the seal and the seal fitting. The displacement structure can drive the seal and the seal fit to repeatedly contact and separate, and is used to simulate the sealing of the workpiece when it is repeatedly opened and closed. The process of repeated contact and separation between the sealing part and the sealing fitting part; the displacement structure is also provided with an image acquisition device, and the image acquisition device is facing the contact area of the sealing part and the sealing fitting part; the image acquisition device can obtain the contact and Images during separation to detect the contact process between the seal and the seal partner 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 between the seal and the sealing partner, and can detect a single contact between the seal and the sealing partner, so as to further improve the accuracy of the obtained indentation formation process and mechanism sex.

Please refer to FIG. 1 , the seal testing device provided by the embodiment of the present disclosure includes: a displacement structure 1, the displacement structure 1 is used to install the seal 3 and the seal fitting 4, and the displacement structure 1 can drive the seal 3 and the seal fitting 4 Repeated contact and separation; also includes an image acquisition device 2, the image acquisition device 2 is installed on the displacement structure 1, and the image acquisition device 2 is facing the contact area of the seal 3 and the seal fitting 4, for obtaining the seal 3 and the seal Images of mating parts 4 in contact and separation.

The displacement structure 1 may be composed of a mounting beam and a driving assembly, the driving assembly is connected to the mounting beam, and the driving assembly can drive the mounting beam to move, and the mounting beam is used to install the sealing member 3 and the sealing fitting 4, when the driving assembly drives the mounting beam to move , the installation beam drives the sealing member 3 and the sealing fitting 4 to contact and separate repeatedly. Exemplarily, the installation beam may include a fixed beam and a moving vertical beam arranged perpendicularly to each other, the sealing member 3 is fixedly installed on the fixed beam, one end of the moving vertical beam is connected with the drive assembly, and the other end of the moving vertical beam is used for installing a sealing fit 4, the driving assembly drives the moving vertical beam to move towards the direction close to the fixed beam, so that the sealing fitting 4 is in contact with the sealing member 3; or the driving component drives the moving vertical beam to move away from the fixed beam, so that the sealing fitting 4 and the sealing Piece 3 separates. A fixed bracket is also provided at the position facing the mounting seal 3 of the fixed crossbeam, and the image acquisition device 2 is installed on the fixed bracket to acquire images when the seal 3 and the sealing fitting 4 contact and separate.

Exemplarily, the installation beam may also include a first installation beam and a second installation beam oppositely arranged, the drive assembly includes a first drive assembly and a second drive assembly, the first installation beam is connected to the first drive assembly, and the second installation beam It is connected with the second drive assembly; the seal 3 is fixed on the first installation beam, the sealing fitting 4 is fixed on the second installation beam, the first drive assembly drives the first installation beam to move towards the direction close to the second installation beam, and the second The second drive assembly drives the second installation beam to move towards the direction close to the first installation beam, so that the first installation beam and the second installation beam are close to each other, and the seal 3 and the sealing fitting 4 can contact; or the first drive assembly drives the first installation beam. The installation beam moves away from the second installation beam, and the second drive assembly drives the second installation beam to move away from the first installation beam, so that the first installation beam and the second installation beam are far away from each other, and the seal 3 and the sealing fit Piece 4 can be separated. The installation beam can also include a fixed beam, the two ends of the fixed beam are used to connect the first installation beam and the second installation beam, and the fixed beam is also provided with a fixed bracket, and the image acquisition device 2 is installed on the fixed bracket, facing the sealing The contact area of part 3 and sealing part 4 is used to acquire images when the sealing part 3 and sealing part 4 are in contact and separated.

Therefore, the seal testing device of the embodiment of the present disclosure drives the seal and the seal fitting to repeatedly contact and separate through the displacement structure, simulating the process of repeated contact and separation of the seal and the seal fitting when the workpiece is repeatedly opened and closed; and through the displacement structure The image acquisition equipment set up acquires the images of the contact and separation of the seal and the seal fitting in real time, and tests the formation process of the indentation on the surface of the seal under different preset conditions to realize the detection of a single contact between the seal and the seal fit. Wherein, as shown in Fig. 1, Fig. 2 and Fig. 3, displacement structure 1 can comprise fixed base 11, displacement frame 12 and driving device 13; On the fixed seat 11; the displacement frame 12 includes a frame body 121 and a mounting plate 122 arranged on the frame body 121, and the mounting plate 122 is perpendicular to the relative moving direction of the sealing member 3 and the sealing fitting 4 (the vertical direction in Fig. 1 and Fig. 2 vertical direction), the sealing member 3 is used to be arranged on the mounting plate 122; the driving device 13 is connected with the frame body 121 and the fixed seat 11, and the driving device 13 is used to drive the frame body 121 to move relative to the fixed seat 11.

Exemplarily, in the orientation shown in FIG. 1 and FIG. 2 , the frame body 121 can be at least two vertically arranged support beams, evenly distributed on the upper part of the fixed seat 11 , and arranged around the outer periphery of the fixed seat 11 . At this time, the mounting plate 122 is arranged horizontally, and each corner of the mounting plate 122 is correspondingly provided with a support beam, and the sealing member 3 is disposed on the mounting plate 122 . Driven by the driving device 13, the frame body 121 moves vertically relative to the fixed seat 11, and at the same time drives the mounting plate 122 to move relative to the fixed seat 11, and the mounting plate 122 drives the sealing member 3 to move relative to the fixed seat 11, so that The seal and seal partner are in contact or separated.

Exemplarily, as shown in FIG. 1 , the frame body 121 includes four vertically arranged support beams, evenly distributed on the upper part of the fixing base 11 , and arranged around the outer periphery of the fixing base 11 . The mounting plate 122 can be a rectangular plate, arranged horizontally, and the four corners of the mounting plate 122 are correspondingly provided with a supporting beam. Specifically, the 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 remains horizontally fixed.

Exemplarily, 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, and the mounting beams 124 are arranged on two vertically disposed support beams. between, and the two ends of the installation beam 124 are vertically connected with two vertically arranged support beams respectively. Two opposite sides of the mounting plate 122 are set on two opposite mounting beams 124 respectively, and the mounting beams 124 are used to support and fix the mounting plate 122 so that the mounting plate 122 remains horizontally fixed. Alternatively, the two opposite sides of the mounting plate 122 are respectively embedded in the slots of two opposite mounting beams 124, and the mounting beams 124 are used to support and fix the mounting plate 122, so that the mounting plate 122 remains horizontally fixed.

When the frame body 121 is driven by the driving device 13 to move away from the fixed seat 11 (in the orientation shown in FIG. 2 , it moves upward), the frame body 121 drives the mounting plate 122 to move away from the fixed seat 11. (moving upwards in the orientation shown in FIG. 2 ), the seal 3 will now move away from the seal partner 4 . When the frame body 121 is driven by the driving device 13 and moves toward the direction close to the fixed seat 11 (in the orientation shown in FIG. (downward in the orientation shown in FIG. 2 ), at which point the seal 3 will approach and come into contact with the seal partner 4 .

Therefore, the seal test device of the embodiment of the present disclosure installs the seal fitting 4 through the fixed seat 11 of the displacement structure 1, installs the seal 3 through the displacement frame 12 provided on the upper part of the fixed seat 11, and drives the frame of the displacement frame 12 through the driving device 13. The body 121 moves relative to the fixed seat 11, so that the sealing member 3 and the sealing fitting 4 repeatedly contact and separate, simulating the repeated contact and separation process of the sealing member 3 and the sealing fitting 4 when the workpiece is repeatedly opened and closed.

Please refer to Fig. 4, in the present embodiment, installation window is set on the installation plate 122, and transparent plate 123 is arranged in the installation window, and sealing member 3 is used to be arranged on the transparent plate 123; One side of the base 11 is fixed, and the image acquisition device 2 is connected to the frame body 121, and the image acquisition device 2 is set facing the installation window. The image acquisition device 2 takes pictures of the sealing member 3 on the transparent plate 123 through the transparent plate 123 , so that the image acquisition device 2 can smoothly record the forming process of the indentation on the sealing member 3 .

Exemplarily, a through hole through the mounting plate 122 can be opened on the mounting plate 122 to form an installation window, and a transparent plate 123 matching the installation window is embedded in the through hole, and the transparent plate 123 is close to the sealing fitting 4 One side is provided; Or can offer on the installation plate 122 the through hole that runs through the installation plate 122, form the installation window, the transparent plate 123 is laid on the position of the installation window on the installation plate 122 (at this moment, the size of the installation window is larger than the transparent plate 123 size), and the transparent plate 123 is arranged near the side of the solid sealing fitting 4.

Exemplarily, both the sealing member 3 and the transparent plate 123 are provided with through holes, and when the transparent plate 123 is arranged in the installation window, the connecting parts are sequentially passed through the through holes on the sealing member 3 and the transparent plate 123, so that the sealing member 3 is fixed on the transparent plate 123 to ensure that the seal 3 will not shake in the installation window.

Therefore, the seal testing device of the embodiment of the present disclosure installs the seal 3 through the mounting plate 122 on the displacement frame 12. If it is necessary to test the performance of the seal 3 of different shapes and materials, it only needs to be removed from the mounting window of the mounting plate 122. The sealing member 3 can be replaced again, and the operation is simple and convenient. And using the mounting plate 122 as a carrier to support the sealing member 3 is safer and more reliable than directly installing the sealing member 3 on the displacement frame 12. When simulating the sealing performance of the sealing member 3, the sealing member 3 itself will not be damaged. . At the same time, the image acquisition device 2 faces the installation window on the installation plate 122 , and can accurately acquire images of the contact and separation of the sealing member and the sealing fitting in real time.

The shapes and thicknesses of the mounting plate 122 , the transparent plate 123 and the sealing member 3 in this embodiment are all set according to specific situations, and are not limited here.

Please refer to Fig. 1, Fig. 2 and Fig. 3, in this embodiment, the bottom end of the frame body 121 away from the fixed seat 11 has a fixed beam 125 extending parallel to the direction of the mounting plate 122, and the image acquisition device 2 passes through the first adjusting device 126 is connected to the fixed beam 125 , and the first adjustment device 126 is used to adjust the relative position of the image acquisition device 2 and the installation window 123 .

Specifically, while the first adjusting device 126 is used to install the fixed image acquisition device 2, it can also drive the image acquisition device 2 to move, so as to adjust the relative position between the image acquisition device 2 and the installation window 123, so that the image acquisition device 2 can acquire different Azimuth images of the seal 3 and the seal partner 4 when they are in contact and when they are separated.

Exemplarily, the first adjustment device 126 may be a ring-shaped bracket, and the outer circumference of the bracket is extended with buckles, which are snapped onto the fixed beam 125, and the image acquisition device 2 passes through the ring opening of the bracket, so that the first adjustment The device 126 is connected to the fixed beam 125 . Wherein, the fixed beam 125 is parallel to the installation plate 122, and the fixed beam 125 may be a slide rail, and the image acquisition device 2 may be a camera. The lens of the camera passes through the annular opening of the first adjusting device 126, so that the camera is installed on the first adjusting device 126, and the buckle of the first adjusting device 126 is engaged on the slide rail, and is slidably connected with the slide rail, which can drive The camera slides a preset distance on the slide rail to record the state of the sealing member 3 in multiple directions.

Exemplarily, in the orientation shown in FIG. 1 and FIG. 2 , the frame body 121 may include four vertically arranged support beams, the mounting plate 122 is formed in a rectangular shape, and is horizontally arranged, and the four corners of the mounting plate 122 are respectively Connect with four frame bodies 121. 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 the 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, as Support beams; the two fixed beams 125 are connected by the remaining one fixed beam 125 , and the remaining one fixed beam 125 is used for installing the first adjusting device 126 , and the first adjusting device 126 slides along the remaining one fixed beam 125 .

Exemplarily, five fixed beams 125 may also be included, and the five fixed beams 125 are all located on the same horizontal plane, wherein the four fixed beams 125 are connected end to end to form a rectangular frame, which is used to connect with the four frame bodies 121 , as a supporting beam; the other fixed beam 125 is connected to the middle of the rectangular frame for installing the first adjusting device 126 , and the first adjusting device 126 slides along the remaining fixed beam 125 .

Therefore, the seal test device of this embodiment installs the image acquisition device 2 through the first adjustment device 126, the first adjustment device 126 is connected with the fixed beam 125, and can slide along the fixed beam 125, and when sliding along the fixed beam 125, the The image acquisition device 2 is also driven to slide along the fixed beam 125, so that the relative position of the image acquisition device 2 and the installation window 123 can be adjusted, so that the image acquisition device 2 can not only monitor and record the repeated contact between the sealing fitting 4 and the sealing member 3 in real time, The separation process can also detect in real time the formation process of the indentation on the sealing member 3 and the disappearance process of the indentation after the sealing fitting 4 and the sealing member 3 are in contact with each other. At the same time, it is ensured that the image acquisition device 2 can monitor the state of the sealing area where the sealing fitting 4 and the sealing member 3 are in contact with each other in various directions.

Please refer to Fig. 1 and Fig. 2, in the present embodiment, fixed base 11 comprises base plate 111, is arranged on the second adjusting device 112 on base plate 111, and support portion 113; Driving device 13 is connected with base plate 111, and support portion 113 is arranged on On the second adjustment device 112 , the sealing fitting 4 is used to be arranged on the support part 113 , and the second adjustment device 12 is used to adjust the relative position of the support part 113 and the installation window 123 .

Exemplarily, the bottom plate 111 is arranged horizontally and is formed into a rectangle for supporting the second adjustment device 112 and the support portion 113. The four corners of the bottom plate 111 are respectively connected with driving devices 13, and the four driving devices 13 are far away from one end of the bottom plate 111. All are connected with 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 seal 3 on the mounting plate 122 to move relative to the bottom plate 111 . The driving device 13 may be a piezoelectric driver, which uses the inverse piezoelectric effect of piezoelectric ceramic materials to convert input electrical energy into output mechanical energy, so as to realize displacement driving. The driving device 13 can also be a multi-layer piezoelectric stack driver, which is mainly formed by stacking multi-layer piezoelectric ceramic sheets and electrode sheets. Large, can realize the displacement drive of nanometer level, in this embodiment, can guarantee the micro-displacement (nanoscale) of frame body 121. For the 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 to the frame body 121, and when the displacement output end freely expands and contracts, the frame body 121 will be driven to move.

Please refer to FIG. 1, FIG. 2, FIG. 3 and FIG. 5. In this embodiment, the second adjustment device 12 is placed horizontally on the bottom plate 111, and is used to drive the support part 113 to rotate at a preset angle, so as to adjust the sealing fitting 4 relative to the position of the mounting window 123 .

Exemplarily, the second adjusting device 112 includes a first angle platform 1121 and a second angle platform 1122; the first angle platform 1121 is arranged on the bottom plate 111, and the second angle platform 1122 is arranged on the first angle platform 1121 Above, the supporting part 113 is disposed on the second angle platform 1122; the rotation axes of the first angle platform 1121 and the second angle platform 1122 are vertical.

Wherein, the first angle platform 1121 drives the support part 113 to swing on the first plane by a first preset angle, and the second angle platform 1122 simultaneously drives the first angle platform 1121 and the support part 113 to swing on the second plane for a second time. Preset angle; the first plane and the second plane are perpendicular to each other. When the second adjustment device 112 adjusts the position of the sealing fitting 4 relative to the installation window 123, first keep the second angle platform 1122 out of work, and adjust the first angle platform 1121 to swing, and now the first angle platform 1121 will drive The first angle platform 1121 and the supporting part 113 swing together; then keep the first angle platform 1121 not working, and adjust the second angle platform 1122, and now the second angle platform 1122 will drive the supporting part 113 to swing.

Exemplarily, as shown in FIG. 5 , the first angle platform 1121 includes: a first bottom structure 1123 , a first angle adjustment structure 1124 and a first swing structure 1125 , and one side of the first bottom structure 1123 is set on the bottom plate 111 , the other side of the first bottom structure 1123 away from the bottom plate 111 forms an arc-shaped surface, the side wall of the arc-shaped surface is provided with a scale, the first swing structure matches the arc-shaped surface, and can swing back and forth on the arc-shaped surface; An angle adjustment structure 1124 is connected with the first swing structure 1125 for controlling the swing angle of the first swing structure 1125 on the arc surface, and the specific angle of swing can be observed according to the scale on the side wall of the arc surface when swinging. The structure and working principle of the second angle platform 1122 are consistent with those of the first angle platform 1121 , and will not be described in detail here.

The formation process of the indentation on the surface of the seal is different under different preset conditions. Among them, the different preset conditions include: the environment (temperature, pressure) of the seal and the seal partner, the contact angle of the seal and the seal partner, the sealing contact pressure between parts and sealing fittings. In order to simulate the process of repeated contact and separation between the sealing fitting 4 and the sealing member 3 under different contact angles, this embodiment adjusts the installation angle of the sealing fitting 4 through the first angle stage 1121 and the second angle stage 1122, thereby changing The contact angle of the sealing fitting 4 and the sealing member 3 is such that the sealing fitting 4 and the sealing member 3 can contact each other in any angle.

In this embodiment, in the initial state, the sealing member 3 is placed horizontally, and the sealing fitting 4 is placed vertically, and the two are in vertical contact with each other, and an in-situ indentation is formed on the sealing member 3; when the force between the workpieces is unbalanced, the sealing The contact angle between the fitting part 4 and the sealing part 3 will change, and an off-position indentation will be formed on the sealing part 3 . When the contact angle between the sealing fitting 4 and the sealing member 3 is constantly changing, indentations of different depths and shapes will be formed on different positions of the sealing member 3 each time the workpiece is opened and closed, and the subsequent indentations may also be formed in the previous position. There is an indentation formed on it, and after so many repetitions, silver streaks will form around the indentation.

In this embodiment, the angle between the sealing fitting 4 and the vertical axis is adjusted through the first angle stage 1121 and the second angle stage 1122, so that the sealing fitting 4 is inclined, so as to simulate that when the workpiece is repeatedly opened and closed, due to the force The change of the contact angle between the sealing part 4 and the sealing part 3 caused by the imbalance, observe the difference between the in-situ indentation and the off-position indentation, and observe and record the process of forming silver streaks around the indentation, in order to study the accumulation of indentation Stacking effects provide support.

Please refer to FIG. 2, FIG. 3, FIG. 5 and FIG. 6, in this embodiment, the support portion 113 is provided with a first direction detection device 5, and the first direction detection device 5 is used to detect the installation angle of the support portion 113 in real time; The mounting plate 122 is provided with a second direction detection device 6 for detecting the inclination angle of the mounting plate 122 in real time.

Wherein, the installation angle of the support portion 113 represents the installation angle of the sealing fitting 4, and the inclination angle of the installation plate 122 represents the installation angle of the sealing member 3, those skilled in the art can according to the first direction detection device 5 and the second direction detection device 6 Feedback angle information, knowing at which angle the indentation state of the surface of the sealing member 3 is obtained, and adjusting the installation angle of the sealing fitting 4 and the installation angle of the sealing member 3 according to the feedback information , to simulate the formation process of indentation under various contact angles.

Exemplarily, as shown in FIG. 2 , FIG. 3 and FIG. 6 , the second direction detection device 6 is disposed at any position on the mounting plate 122 and is horizontally disposed on the mounting plate 122 . As the mounting plate 122 moves or swings, Accurately acquire the installation angle of the installation board 122 . The support part 113 is connected with a fixed plate 114, and the fixed plate 114 is provided with a first direction detection device 5, which can support and fix the first direction detection device 5, so that the first direction detection device 5 swings or moves with the support part 113, accurately The installation angle of the support part 113 is obtained.

In this embodiment, as shown in FIG. 5 and FIG. 6 , a pressure detection device 7 is provided on the support portion 113 , and the pressure detection device 7 is connected to the sealing fitting 4 for detecting the pressure on the sealing fitting 4 . The pressure detection device 7 can detect the contact pressure between the sealing fitting 4 and the sealing part 3 in real time, and those skilled in the art can obtain the current pressure of the indentation state on the surface of the sealing part 3 according to the pressure information fed back by the pressure detection device 7 According to the feedback information obtained under contact, the installation positions of the sealing fitting 4 and the sealing member 3 can be adjusted to simulate the formation process of the indentation under various contact pressures.

Exemplarily, the first direction detection device 5 and the second direction detection device 6 can be direction sensors, which measure the acceleration and gravity of an object by sensing the magnitude of the inertial force of an object in a certain direction, and measure an object in two directions perpendicular to gravity. The magnitude of the component force in one direction, so as to determine the angle of the object in the horizontal direction, and convert the direction signal into an electrical signal. The pressure detection device 7 may be a pressure sensor, which senses the pressure signal and converts the pressure signal into an electrical signal. Specifically, the pressure sensor includes a sensitive element, a conversion element and a measurement circuit. The sensitive element is connected to the component under test (support part 113). Convert it into an electrical signal, and then output the electrical signal through the measurement circuit, so as to obtain the pressure on the component under test (supporting part 113 ).

Please refer to Fig. 3, Fig. 4 and Fig. 5, in this embodiment, the support part 113 includes a support base 1131 and a propping column 1132; The mounting hole 1133 and the abutment column 1132 are installed in the installation hole 1133 ;

Wherein, in the orientation shown in FIG. 5 , the pressure detection device 7 is arranged at the bottom of the installation hole 1133 inside the support base 1131, the bottom end of the abutment column 1132 is placed above the pressure detection device 7, and the top end of the abutment column 1132 is used for Install seal fitting 4. In this embodiment, the abutting column 1132 is in contact with the pressure detection device 7. When the seal 3 and the sealing fitting 4 are in contact, the sealing fitting 4 transmits the contact pressure to the abutting column 1132, and at the same time is abutted by the abutting column 1132 The pressure detection device 7 at the bottom receives it. Therefore, the supporting portion 113 of this embodiment can not only install and fix the sealing fitting 4 , but also accurately obtain the contact pressure between the sealing member 3 and the sealing fitting 4 . At the same time, the shape of the sealing fitting 4 is different and the material is different, and the contact pressure between it and the sealing member 3 is different. When it is necessary to simulate a variety of different sealing fittings 4, it is only necessary to disassemble and replace the sealing fitting from the top of the abutment column 1132 4 is enough.

Exemplarily, as shown in FIG. 4 , an installation slot 1134 is formed on the top of the abutment column 1132 , the sealing fitting 4 includes an upper part 42 of the sealing fitting and a lower part 41 of the sealing fitting, and the lower part 41 of the sealing fitting is arranged on Inside the installation slot 1134 , the upper portion 42 of the sealing fitting extends out of the installation slot 1134 for contacting the sealing member 3 .

Exemplarily, as shown in FIG. 6 , the support base 1131 includes: a first support base 1136 and a second support base 1137 , the first support base 1136 is connected to the bottom plate 111 , and the second support base 1137 is arranged above the first support base 1136 , and the first support base 1136 and the second support base 1137 are provided with connection holes 1138, the connectors pass through the connection holes 1138 on the first support base 1136 and the second support base 1137 in turn, so that the first support base 1136 and the second support base 1137 The second support seat 1137 is detachably connected.

For the integrally formed support base 1131, when the pressure detection device 7 needs to be replaced, all the components provided on the support base 1131 need to be disassembled from top to bottom, but for the detachable support base 1131, only the entire first The second supporting seat 1137 can carry out the installation and replacement of the pressure detection device 7 .

Please refer to FIG. 6 , in this embodiment, a limit mechanism 1135 is provided between the abutment column 1132 and the wall of the installation hole 1133 , and the limit mechanism 1135 is used to make the centerline of the abutment column 1132 and the center of the installation hole 1133 The lines are collinear.

Exemplarily, the limit mechanism 1135 can be a fixed sleeve, which is set in the installation hole 1133 and is arranged around the outer circumference of the abutment column 1132 to limit the abutment column 1132 to ensure that the abutment column 1132 does not Offset will occur within the mounting hole 1133 .

Exemplarily, the limiting mechanism 1135 can be a plurality of vertically arranged balls, and the plurality of vertically arranged balls are arranged in the installation hole 1133 and arranged around the outer circumference of the abutting post 1132 for abutting against the abutting post 1132 Positioning is performed to ensure that the abutment column 1132 will not be displaced in the mounting hole 1133 .

In the embodiment of the present disclosure, it also includes: a control unit.

The control unit is electrically connected to the driving device 13, and is used to send a control signal to the driving device 13. After receiving the control signal, the driving device 13 moves the driving frame 121 away from the bottom plate 111, or controls the driving device 13 to drive the frame 121. Move toward the direction close to the bottom plate 111 . When the driving device 13 drives the frame body 121 to move away from the bottom plate 111, the frame body 121 will drive the mounting plate 122 to move away from the support part 113, so that the sealing fitting 4 is separated from the sealing part 3; when the driving device 13 drives When the frame body 121 moves toward the direction close to the bottom plate 111 , the frame body 121 will drive the mounting plate 122 to move toward the direction close to the support portion 113 , so that the sealing fitting 4 and the sealing member 3 are in contact with each other.

The control unit is electrically connected to the first direction detection device 5 to receive the inclination angle of the support portion 113 in the vertical direction detected by the first direction detection device 5 in real time, that is, to receive the sealing fit detected by the first direction detection device 5 in real time The inclination angle of piece 4 in the vertical direction.

The control unit is electrically connected to the second direction detection device 6 to receive the inclination angle of the mounting plate 122 in the horizontal direction detected by the second direction detection device 6 in real time, that is, to receive the real-time detection of the seal 3 by the second direction detection device 6 The angle of inclination in the horizontal direction.

The control unit is electrically connected to the first angle platform 1121 and the second angle platform 1122 of the angle adjustment unit 2 respectively, and according to the received inclination angle of the sealing member 3 in the horizontal direction and the inclination of the sealing fitting 4 in the vertical direction, The angle, as well as the actual simulation requirements, control the first angle platform 1121 and the second angle platform 1122 to further adjust the inclination angle of the sealing fitting 4 in the vertical direction. This enables the test device of this embodiment to monitor the contact conditions between the sealing fitting 4 and the sealing member 3 at various angles.

The control unit is electrically connected to the image acquisition device 2 and the first adjustment device 126 respectively, and can receive the indentation formation process and the indentation disappearance process of the sealing interface captured by the image acquisition device 2 in real time, and can control the first adjustment device 126 at the same time. The fixed beam 125 moves upward, so that the image acquisition device 2 can capture the sealing interface in various directions and angles.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present disclosure. scope.

Claims (6)

1. A seal testing apparatus, comprising:

a displacement structure for mounting a seal and a seal mating member, the displacement structure for driving the seal and the seal mating member to repeatedly contact and separate;

the image acquisition device is arranged on the displacement structure and is opposite to the contact area of the sealing element and the sealing matching element, and is used for acquiring images when the sealing element and the sealing matching element are contacted and separated;

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 a mounting plate arranged on the frame body, wherein the mounting plate is perpendicular to the relative movement direction of the sealing element and the sealing matching element, and the sealing element is arranged on the mounting plate;

the driving device is connected with the frame body and the fixed seat and is used for driving the frame body to move relative to the fixed seat;

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; through holes are formed in the sealing piece and the transparent plate, and when the transparent plate is arranged in the mounting window, the connecting piece sequentially penetrates through the sealing piece and the transparent plate;

the image acquisition equipment is arranged on one side of the mounting plate, which is away from the fixed seat, and is connected with the frame body, and the image acquisition equipment is arranged opposite to the mounting window;

the fixing seat comprises a bottom plate, a second adjusting device and a supporting part, wherein the second adjusting device is arranged on the bottom plate;

the driving device is connected with the bottom plate, the supporting part is arranged on the second adjusting device, the sealing matching piece is arranged on the supporting part, and the second adjusting device is used for adjusting the relative position of the supporting part and the mounting window;

the second adjusting device comprises a first angular position table and a second angular position table;

the first angular position table is arranged on the bottom plate, the second angular position table is arranged on the first angular position table, and the supporting part is arranged on the second angular position table; the rotation axes of the first angular position table and the second angular position table are vertical; the first angular position table drives the supporting part to swing a first preset angle on a first plane, and the second angular position table simultaneously drives the first angular position table and the supporting part to swing a second preset angle on a second plane; the first plane and the second plane are perpendicular to each other;

the first angular platform comprises a first bottom structure, a first angle adjusting structure and a first swinging structure; one side surface of the first bottom structure is arranged on the bottom plate, an arc-shaped surface is formed on the other side surface of the first bottom structure, which faces away from the bottom plate, scales are arranged on the side wall of the arc-shaped surface, and the first swinging structure is matched with the arc-shaped surface; the first angle adjusting structure is connected with the first swinging structure, controls the swinging angle of the first swinging structure on the arc-shaped surface, and can observe the specific swinging angle according to scales on the side wall of the arc-shaped surface during swinging.

2. The seal testing apparatus of claim 1, wherein the seal testing apparatus comprises,

the bottom that the support body deviates from the fixing base has along being on a parallel with the fixed beam that the mounting panel direction extends, image acquisition equipment with the fixed beam is connected through a adjusting device, a adjusting device is used for adjusting image acquisition equipment with the relative position of installing window.

3. The seal testing apparatus of claim 1, wherein the seal testing apparatus comprises,

the support part is provided with a first direction detection device, and the mounting plate is provided with a second direction detection device.

4. A seal testing apparatus according to any one of claims 1 to 3,

the support part is provided with a pressure detection device, and the pressure detection device is connected with the sealing matching piece and is used for detecting the pressure born by the sealing matching piece.

5. The seal testing apparatus of claim 4, wherein the seal testing apparatus comprises a seal holder,

the supporting part comprises a supporting seat and a propping 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 supporting column penetrates through the mounting hole;

the top of the propping column is used for installing the sealing matching piece, and the pressure detection device is arranged in the installation hole and is positioned at the lower part of the propping column.

6. The seal testing apparatus of claim 5, wherein the seal testing apparatus comprises,

and a limiting mechanism is arranged between the propping column and the hole wall of the mounting hole and used for enabling the center line of the propping column to be collinear with the center line of the mounting hole.

Images