Ultrasonic testing stage

Abstract

The present invention relates to the field of ultrasonic testing, and discloses an ultrasonic testing stage. The ultrasonic testing stage includes a base and a fixed stage disposed on the base. A tabletop is provided at the top of the fixed stage, and pressing components are provided on both sides of the fixed stage. The pressing components include sliding tracks, V-shaped brackets, and pressing bars. The sliding tracks are arranged obliquely downward in the direction close to the tabletop. The V-shaped bracket has a pressing end, a control end, and a rotation center axis located between the pressing end and the control end. The pressing end extends above the tabletop, the control end is located on the side away from the tabletop, and the rotation center axis is rotatably arranged on the sliding track and slidably cooperates with the sliding track. The rotation center axis is connected with a first reset member for forcing the rotation center axis to approach the fixed stage along the sliding track. The pressing bar is arranged at the end of the pressing end of the V-shaped bracket, and a force-applying structure for pressing the pressing bar onto the tabletop is provided on the pressing component. The ultrasonic testing stage of the present application can facilitate sampling and lofting without affecting subsequent project tests.

Description

Technical Field

[0001] The present invention relates to the field of ultrasonic testing, and in particular to an ultrasonic testing stage. Background Art

[0002] An ultrasonic scanning microscope transmits high-frequency ultrasonic waves into the interior of a sample. When passing through the interface between two different materials, due to the different acoustic impedances of different materials and the different degrees of absorption and reflection of sound waves, the changes in the energy information or phase information of the reflected or transmitted ultrasonic waves are collected to inspect defects such as delamination, cracks, or cavities inside the sample.

[0003] Ultrasonic waves used in industry mainly use water as the propagation medium. That is, as Figure 1 shown, the fixed stage 3 is placed in water, the sample 2 is placed on the testing stage, and the ultrasonic probe 3 extends into the water for testing. During the test, the probe moves horizontally left and right along the set testing area to collect sample information.

[0004] Currently, many products can use ultrasonic testing. By detecting whether there are spots or cavities in the image area generated by the sample, it can be known whether the ultrasonic fingerprint identifier meets the standard. However, in the actual testing process, products such as ultrasonic fingerprint identifiers are small and thin, with a thickness of about 150 μm. If directly placed on the platform for scanning in water, it will move with the water flow during the scanning process and cannot form an image.

[0005] Currently, there are mainly two ways to fix the ultrasonic fingerprint identifier. One is to use an iron sheet to press around the ultrasonic fingerprint identifier. However, the method of fixing with an iron sheet is inconvenient to operate, and the covering area of the iron sheet is not easy to adjust. In addition, due to the requirement of the focusing depth of the ultrasonic probe, the distance from the sample cannot be greater than 4 mm, so only an iron sheet with a thickness less than 4 mm can be used. When such a thin iron sheet presses around, it is not enough to overcome the warping around the sample itself, and the scanned acoustic wave diagram will have uneven light and dark distribution. The other is to use double-sided tape to fix the ultrasonic fingerprint identifier on the stage, but the sample cannot be completely removed for subsequent other project tests. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an ultrasonic testing stage that is convenient for sampling and placing the sample.

[0007] The ultrasonic testing stage disclosed by the present invention includes a base and a fixed stage arranged on the base. A tabletop is arranged on the top of the fixed stage, and pressing components are arranged on both sides of the fixed stage. The pressing components include sliding tracks, V-shaped brackets, and pressing strips;

[0008] The sliding tracks are arranged obliquely downward in the direction close to the tabletop;

[0009] The V-shaped bracket has a pressing end, a control end, and a rotation center axis located between the pressing end and the control end. The pressing end extends above the tabletop. The control end is located on the side away from the tabletop. The rotation center axis is rotatably arranged on the sliding track and is in sliding cooperation with the sliding track. The rotation center axis is connected with a first reset member that forces the rotation center axis to approach the fixed stage along the sliding track.

[0010] The pressing strip is arranged at the end of the pressing end of the V-shaped bracket. The pressing component is provided with a force application structure that presses the pressing strip onto the tabletop.

[0011] Preferably, the tabletop is connected to the top of the fixed stage through a detachable connection structure.

[0012] Preferably, the tabletop is made of ferromagnetic metal material. The force application structure includes a magnet arranged on the pressing strip.

[0013] Preferably, the length and mass of the pressing end of the V-shaped bracket are greater than those of the control end.

[0014] Preferably, a control component is connected to the side of the control end of the V-shaped bracket away from the fixed stage.

[0015] Preferably, the control component includes a flexible connecting member and a pull rod. The pull rod is connected to the control end of the V-shaped bracket through the flexible connecting member.

[0016] Preferably, a first limit card slot and a second limit card slot are arranged on the side of the pressing component away from the fixed stage. The first limit card slot is located above the second limit card slot. The slot opening of the first limit card slot faces upward, and the slot opening of the second limit card slot faces downward.

[0017] When the pull rod is in the slot of the first limit card slot, the flexible connecting member is in a relaxed state.

[0018] When the pull rod is in the slot of the second limit card slot, the flexible connecting member is in a tightened state, and the pressing end of the V-shaped bracket is pulled away from the pressing end.

[0019] Preferably, one ends of the pull rods on the same side of the two sides of the fixed stage are respectively hinged to the base. The other ends of the pull rods on both sides are connected through a control main rod. A fixed pulley is arranged on the side of the pressing component away from the fixed stage. The fixed pulley is located above the pull rod. The flexible connecting member bypasses the fixed pulley and is connected to the pull rod. A second reset member that forces the pull rod to reset upward to make the flexible connecting member reach a relaxed state is connected to the pull rod or the control main rod.

[0020] Preferably, the second reset member is a compression spring connected below the pull rod or the control main rod.

[0021] Preferably, the first reset member is a tension spring connected between the end of the sliding track close to the fixed stage and the rotation central axis.

[0022] Preferably, the base is respectively provided with the sliding tracks at both ends corresponding to the rotation central axis of the V-shaped bracket, both ends of the rotation central axis are respectively arranged in the corresponding sliding tracks, and the pressing end and the control end are both connected to the middle of the rotation central axis.

[0023] Preferably, the thickness of the pressing strip is less than 3.5 mm.

[0024] The beneficial effects of the present invention are as follows: By using the ultrasonic detection stage of the present application, the cooperation of the V-shaped bracket and the sliding track in the pressing component can fix the sample. Compared with the existing iron sheet pressing and fixing method, the operation is not only more convenient, but also the pressing position is more accurate. Compared with the existing double-sided adhesive fixing method, the sample can be taken and placed more conveniently, and it will not affect the subsequent project testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of existing ultrasonic detection;

[0026] Figure 2 is a front internal schematic diagram of another embodiment of the ultrasonic detection stage of the present application;

[0027] Figure 3 is Figure 2 a side schematic diagram of the embodiment of;

[0028] Figure 4 is Figure 2 a top view schematic diagram of the embodiment of;

[0029] Figures 5 to 7 is a schematic diagram of the sample placement process of the ultrasonic detection stage of the present application;

[0030] Figure 8 is a side schematic diagram of another embodiment of the ultrasonic detection stage of the present application;

[0031] Figure 9 is Figure 8 a top view schematic diagram of the embodiment of.

[0032] Reference Signs:

[0033] 1: Ultrasonic probe

[0034] 2: Sample

[0035] 3: Fixed stage

[0036] 301: Tabletop

[0037] 4: V-shaped Bracket

[0038] 401: Pressing End

[0039] 402: Rotating Central Axis

[0040] 403: Control End

[0041] 5: Pressure Strip

[0042] 6: Sliding Track

[0043] 7: First Reset Component

[0044] 8: Control Assembly

[0045] 801: Flexible Connector

[0046] 802: Pull Rod

[0047] 803: First Limit Card Slot

[0048] 804: Second Limit Card Slot

[0049] 805: Fixed Pulley

[0050] 806: Control Main Rod

[0051] 807: Second Reset Component

[0052] 9: Base Detailed Implementation Manner

[0053] In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description of the implementation aspects and specific embodiments of the present disclosure; however, this is not the only form for implementing or applying the specific embodiments of the present disclosure. The following disclosed embodiments can be combined or replaced with each other under beneficial circumstances, or other embodiments can be added to one embodiment without further recording or explanation.

[0054] In the following description, many specific details will be described in detail to enable the reader to fully understand the following embodiments. However, the embodiments of the present disclosure can be practiced without such specific details. In other cases, well-known structures and devices are only schematically shown in the drawings for simplicity.

[0055] In addition, the present disclosure may repeat element symbols and / or letters in various embodiments. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or configurations discussed. Further, in the subsequent present disclosure, a feature being formed on, connected to, and / or coupled to another feature may include embodiments where these features are in direct contact, and may also include embodiments where another feature may be formed and interposed between these features such that the features are not in direct contact.

[0056] In addition, spatially relative terms such as "upper", "lower", "above", "below", and their like are used herein for the purpose of facilitating the description of the relationship between one element or feature and another element or feature in the drawings. These spatially relative terms are intended to cover different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may also be rotated to other orientations (rotated 90 degrees or other orientations), and thus the spatially relative descriptions used herein should be interpreted accordingly.

[0057] The present invention will be further described below.

[0058] As Figures 2 - 4 shown, the ultrasonic detection stage disclosed by the present invention includes a base and a fixed stage 3 disposed on the base. A tabletop 301 is provided at the top of the fixed stage 3. Pressing components are provided on both sides of the fixed stage 3. The pressing components include a sliding track 6, a V-shaped bracket 4, and a pressing strip 5;

[0059] The sliding track 6 is arranged to incline downward in a direction close to the tabletop 301;

[0060] The V-shaped bracket 4 has a pressing end 401, a control end 403, and a rotation center axis 402 located between the pressing end 401 and the control end 403. The pressing end 401 extends above the tabletop 301. The control end 403 is located on the side away from the tabletop 301. The rotation center axis 402 is rotatably arranged on the sliding track 6 and is in sliding cooperation with the sliding track 6. The rotation center axis 402 is connected with a first reset member 7 that forces the rotation center axis 402 to approach the fixed stage 3 along the sliding track 6;

[0061] The pressing strip 5 is arranged at the end of the pressing end 401 of the V-shaped bracket 4. The pressing component is provided with a force application structure for pressing the pressing strip 5 onto the tabletop 301.

[0062] When using this ultrasonic detection stage to test the sample 2, as Figure 5As shown, first, while pulling the control end 403 of the V-shaped bracket 4 to rotate the V-shaped bracket 4 around the rotation axis 402 and slide along the sliding track 6, the pressing end 401 of the V-shaped bracket 4 is lifted upward, and the two V-shaped brackets 4 on both sides move outward respectively, increasing the distance between the pressing ends 401 to provide more sufficient space for placing the sample 2. For example, Figure 6 As shown, after placing the sample 2 on the tabletop 301, slowly release the control end 403 of the V-shaped bracket 4. Under the action of the first resetting member 7, the V-shaped bracket 4 approaches the fixed stage 3 along the sliding track 6, and at the same time, the pressing end 401 of the V-shaped bracket 4 moves downward; For example, Figure 7 As shown, under the action of the force-applying structure, the pressing strip 5 presses the sample 2 tightly to prevent the warping of the sample 2 and affect the detection. During this process, the first resetting member 7 can make the V-shaped bracket 4 reset to the correct position close to the fixed stage 3 along the sliding track 6, so that the pressing strip 5 on the V-shaped bracket 4 can just press both sides of the sample 2. The sliding track 6 is arranged to slope downward in the direction close to the tabletop 301. On the one hand, it can make the V-shaped bracket 4 move obliquely upward away from the tabletop 301 during the opening process, expanding the opening range of the pressing end 401 of the V-shaped bracket 4. On the other hand, during the downward pressing process of the pressing end 401 of the V-shaped bracket 4, the resetting force provided by the first resetting member 7 acts on the sample 2 through part of the V-shaped bracket 4, so that the downward pressing effect is not affected by the movability of the V-shaped bracket 4, but instead plays a certain promoting role. Compared with the method of not setting the V-shaped bracket 4 to rotate through a fixed shaft, not only is the downward pressing and opening angle range of the V-shaped bracket 4 larger, but also the rotation angle of the V-shaped bracket 4 around the rotation axis 402 is smaller, which is more conducive to control.

[0063] The first resetting member 7 can be a tension spring connected between the end of the sliding track 6 close to the fixed stage 3 and the rotation axis 402 to pull the V-shaped bracket 4 inward tightly. In addition, a compression spring can also be arranged in the opposite direction, which can achieve the same effect.

[0064] Because the position of the V-shaped bracket 4 can be adjusted along the sliding track 6 and the distance between the two V-shaped brackets 4 can be adjusted, different specifications and sizes of samples 2 can be fixed. To better achieve this effect, in the preferred embodiment of the present application, the tabletop 301 is connected to the top of the fixed stage 3 through a detachable connection structure. For samples 2 of different sizes, the corresponding specification tabletop 301 can be replaced by adjusting the detachable connection structure of the tabletop 301, which is more conducive to the pressing strip 5 at the pressing end 401 to accurately apply pressure after the V-shaped bracket 4 is adjusted to the appropriate position. The detachable connection structure can specifically adopt existing detachable connection methods such as screw connection, snap connection, and threaded connection.

[0065] The downward pressing of the pressing strip 5 requires the acting force applied by the force-applying structure to ensure the pressing effect. The force-applying component can be connected to the lower part of the lower pressing end 401 or the upper part of the control end 403 of the V-shaped bracket 4 by a tension spring, so as to provide a downward acting force for the lower pressing end 401. Components such as torsion springs that can provide downward pressure can also be provided. Considering the movement of the V-shaped bracket 4, for the convenience of assembly, in the preferred embodiment of the present application, the tabletop 301 is made of ferromagnetic material, and the force-applying structure includes a magnet provided on the pressing strip 5. There is a strong attraction between the magnet and the ferromagnetic material, which can realize the pressing of the sample 2. The ferromagnetic material used for the tabletop 301 is usually a steel plate, and the magnet of the pressing strip 5 is preferably a permanent magnet for easy installation. To enable the V-shaped bracket 4 to rotate towards the tabletop 301 by itself when the control end 403 is released, the length and mass of the lower pressing end 401 of the V-shaped bracket 4 are greater than those of the control end 403, so that the V-shaped bracket 4 rotates under the action of gravity, which can assist in exerting the downward pressing effect.

[0066] The overall volume of the ultrasonic detection stage is small, and it is not convenient to directly operate the control end 403 of the V-shaped bracket 4. Therefore, in the preferred embodiment of the present application, a control component 8 is connected to the side of the control end 403 of the V-shaped bracket 4 away from the fixed stage 3. The control component 8 is used to operate the control end 403. The control component 8 can adopt structures such as chains and handles. In the preferred embodiment of the present application, the control component 8 includes a flexible connecting piece 801 and a pull rod 802, and the pull rod 802 is connected to the control end 403 of the V-shaped bracket 4 through the flexible connecting piece 801. The flexible connecting piece 801 can adopt a pull rope, a chain, etc., which can make the pull rod 802 away from the downward pressing component, more convenient to operate, and will not generate a large acting force on the control end 403 in the released state. The setting of the pull rod 802 is mainly for more convenient operation.

[0067] To further enable the V-shaped bracket 4 to be respectively maintained in the open and downward pressing states, as Figures 2 - 4 shown, in a preferred embodiment of the present application, a first limit card slot 803 and a second limit card slot 804 are provided on the side of the downward pressing component away from the fixed stage 3. The first limit card slot 803 is located above the second limit card slot 804. The notch of the first limit card slot 803 faces upward, and the notch of the second limit card slot 804 faces downward; when the pull rod 802 is in the notch of the first limit card slot 803, the flexible connecting piece 801 is in a relaxed state; when the pull rod 802 is in the notch of the second limit card slot 804, the flexible connecting piece 801 is in a tightened state, and the lower pressing end 401 of the V-shaped bracket 4 is pulled away from the lower pressing end 401. As Figure 2As shown, after the V-shaped bracket 4 is pulled open by the control component 8, the pull rod 802 can be placed in the second limit card slot 804. The notch of the second limit card slot 804 is arranged downward, which can hold the pull rod 802 and straighten the flexible connecting piece 801, so that the V-shaped bracket 4 remains in an open state for placing the sample 2. As Figure 4 shown, after the sample 2 is placed and the pressing strip 5 of the V-shaped bracket 4 is pressed down, the pull rod 802 is placed in the first limit card slot 803. The notch of the first limit card slot 803 is arranged upward, which can prevent the pull rod 802 from falling off and apply a force to the control end 403, thereby ensuring the stability of pressing down the sample 2.

[0068] In addition, as Figures 8 - 9 shown, the present application also provides a more convenient implementation manner: one ends of the pull rods 802 on the same side of the two sides of the fixed stage 3 are respectively hinged to the base, the other ends of the pull rods 802 on the two sides are connected by a control main rod 806, a fixed pulley 805 is arranged on the side of the pressing component away from the fixed stage 3, the fixed pulley 805 is located above the pull rod 802, the flexible connecting piece 801 bypasses the fixed pulley 805 and is connected to the pull rod 802, and a second resetting piece 807 for forcing the pull rod 802 to reset upward to a state where the flexible connecting piece 801 is relaxed is connected to the pull rod 802 or the control main rod 806. By pressing down the control main rod 806, the pull rods 802 on both sides can be pulled simultaneously, and the flexible connecting piece 801 is pulled by the pull rod 802 to open the V-shaped bracket 4, which is more convenient to operate. Since the V-shaped bracket 4 cannot be moved outward along the sliding track 6 by directly pulling down through the flexible connecting piece 801, a fixed pulley 805 needs to be arranged outside the pressing component to change the force application direction of the flexible connecting piece 801 on the V-shaped bracket 4, so that the V-shaped bracket 4 rotates and moves outward at the same time to achieve the foregoing technical effect. The function of the second resetting piece 807 is to force the pull rod 802 to reset upward to a state where the flexible connecting piece 801 is relaxed, and specifically, the implementation manner of the embodiment shown in Figures 8 - 9 can be adopted: the second resetting piece 807 is a compression spring connected below the pull rod 802 or the control main rod 806. The control main rod 806 or the pull rod 802 is lifted by the resilience of the compression spring to relax the flexible connecting piece 801. Of course, other jacking or lifting structures can also be adopted. In addition, structures such as card slots and hooks can also be arranged to keep the control main rod 806 in a pressed-down state and make the V-shaped bracket 4 stable in an open state for the taking-out and placing of the sample 2.

[0069] The rotating central axis 402 is in sliding fit with the sliding track 6. To improve the stability of its installation and avoid interference between the position of the sliding track 6 and the control assembly 8, in the preferred embodiment of the present application, the base is respectively provided with the sliding tracks 6 at both ends of the rotating central axis 402 corresponding to the V-shaped bracket 4. Both ends of the rotating central axis 402 are respectively arranged in the corresponding sliding tracks 6, and both the pressing end 401 and the control end 403 are connected to the middle part of the rotating central axis 402. Both ends of the rotating central axis 402 are supported by the sliding tracks 6, so the stability can be improved. By arranging the sliding tracks 6 on both sides, there is a relatively large space in the middle for arranging components of the pressing assembly such as the flexible connecting member 801 and the fixed pulley 805.

[0070] As mentioned in the background art, the distance between the ultrasonic probe 1 and the sample 2 cannot be greater than 4 mm. And the pressing strip 5 of the present application can provide sufficient downward pressure. Therefore, as long as the strength requirements are met, its thickness can be completely less than 3.5 mm to meet the scanning height requirements of the ultrasonic probe 1. In fact, in the embodiment of the present application, the pressing strip 5 with a thickness of 1 mm is adopted.

[0071] Although the present disclosure has been disclosed in the above embodiments, it is not intended to limit the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be determined by the scope defined by the appended claims.

Claims

1. An ultrasonic detection stage, comprising a base and a fixed stage (3) arranged on the base, wherein a tabletop (301) is arranged at the top of the fixed stage (3), and is characterized in that, Both sides of the fixed stage (3) are provided with downward pressing components, and the downward pressing components include sliding tracks (6), V-shaped brackets (4) and pressing strips (5); The sliding tracks (6) are arranged obliquely downward in the direction close to the tabletop (301); The V-shaped bracket (4) has a downward pressing end (401), a control end (403) and a rotation center axis (402) located between the downward pressing end (401) and the control end (403). The downward pressing end (401) extends above the tabletop (301), and the control end (403) is located on the side away from the tabletop (301). The rotation center axis (402) is rotatably arranged on the sliding track (6) and is slidably matched with the sliding track (6). The rotation center axis (402) is connected with a first reset member (7) that forces the rotation center axis (402) to approach the fixed stage (3) along the sliding track (6). The control end (403) of the V-shaped bracket (4) on the side away from the fixed stage (3) is connected with a control component (8). The control component (8) includes a flexible connecting member (801) and a pull rod (802). The pull rod (802) is connected with the control end (403) of the V-shaped bracket (4) through the flexible connecting member (801). On the side away from the fixed stage (3) of the downward pressing component, a first limit card slot (803) and a second limit card slot (804) are provided. The first limit card slot (803) is located above the second limit card slot (804). The slot opening of the first limit card slot (803) faces upward, and the slot opening of the second limit card slot (804) faces downward; When the pull rod (802) is in the slot of the first limit card slot (803), the flexible connecting member (801) is in a relaxed state; When the pull rod (802) is in the slot of the second limit card slot (804), the flexible connecting member (801) is in a tightened state, and the downward pressing end (401) of the V-shaped bracket (4) is pulled away from the downward pressing end (401); The pressing strip (5) is arranged at the end of the downward pressing end (401) of the V-shaped bracket (4), and the downward pressing component is provided with a force applying structure for pressing the pressing strip (5) on the tabletop (301).

2. The ultrasonic detection stage according to claim 1, wherein: The tabletop (301) is connected to the top of the fixed stage (3) through a detachable connection structure.

3. The ultrasonic detection stage according to claim 1, wherein: The tabletop (301) is made of ferromagnetic metal material, and the force applying structure includes a magnet arranged on the pressing strip (5).

4. The ultrasonic detection stage according to claim 1 or 3, characterized in that: The length and mass of the downward pressing end (401) of the V-shaped bracket (4) are greater than those of the control end (403).

5. The ultrasonic detection stage according to claim 1, wherein: One end of each of the drawbars (802) on the same side of the fixed stage (3) is hinged to the base respectively, and the other ends of the drawbars (802) on both sides are connected by a control main rod (806). A fixed pulley (805) is arranged on the side of the pressing assembly away from the fixed stage (3), and the fixed pulley (805) is located above the drawbar (802). The flexible connecting member (801) bypasses the fixed pulley (805) and is connected to the drawbar (802). A second reset member (807) for forcing the drawbar (802) to reset upward to a state where the flexible connecting member (801) is slack is connected to the drawbar (802) or the control main rod (806).

6. The ultrasonic detection stage according to claim 5, characterized in that: The second reset member (807) is a compression spring connected below the drawbar (802) or the control main rod (806).

7. The ultrasonic detection stage according to claim 1, wherein: The first reset member (7) is a tension spring connected between the end of the sliding track (6) close to the fixed stage (3) and the rotating central axis (402).

8. The ultrasonic detection stage according to claim 1, wherein: Sliding tracks (6) are respectively arranged at both ends of the base corresponding to the rotating central axis (402) of the V-shaped bracket (4). Both ends of the rotating central axis (402) are respectively arranged in the corresponding sliding tracks (6), and both the pressing end (401) and the control end (403) are connected to the middle of the rotating central axis (402).

9. The ultrasonic detection stage according to claim 1, wherein: The thickness of the pressing strip (5) is less than 3.5 mm.

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