A high-power ultrasonic transducer assembly device

Abstract

A high-power ultrasonic transducer assembly device includes a workbench and a nut sleeve, wherein a pressure plate is arranged above the workbench, and the pressure plate and the workbench are connected by two support columns; an installation avoidance through hole is arranged on the pressure plate; a push plate is arranged between the pressure plate and the workbench, and both sides of the push plate are connected to the support columns, and a contour positioning groove is arranged on the push plate. A pre-pressurized gas-liquid booster cylinder is arranged below the workbench. The nut sleeve is arranged in the installation avoidance through hole, and a contour positioning groove is arranged below it, and a torque wrench connection groove is arranged above the nut sleeve. The utility model adopts a booster cylinder to pre-press the piezoelectric ceramics by air pressure first, and then uses hydraulic pressure to further press the piezoelectric ceramics. The two-stage progressive pressurization method can reduce the risk of piezoelectric ceramics being compressed and ruptured. Adding a nut sleeve that cooperates with the locking nut can cooperate with the torque wrench to apply a fixed torque to the locking nut, thereby improving the consistency of the pre-tightening force of the piezoelectric ceramics. A sphere is used as an intermediate connector to reduce the lateral force generated by the axial deviation during the pressurization process.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic transducer production, in particular to a high-power ultrasonic transducer assembly device. Background Art

[0002] Ultrasonic transducers are devices that convert high-frequency electrical energy into mechanical energy. They are widely used in industries such as industry, agriculture, transportation, life, medical treatment, and military. The structure of ultrasonic transducers usually includes piezoelectric ceramics, metal substrates, and matching layers. Among them, piezoelectric ceramics are the core material of the transducer, which has a piezoelectric effect and can convert electrical signals into mechanical vibrations. The greater the power of the ultrasonic transducer, the larger the cross-sectional area of ​​the piezoelectric ceramic, and the greater the preload force required for the piezoelectric ceramic. Low-power piezoelectric ceramic ultrasonic transducers are all preloaded directly through screw torque. When the preload force is applied by screw torque alone, the greater the preload force, the greater the friction force of the screw; when the preload force reaches the peak value of the screw friction force, there is no way to continue to increase the preload force of the piezoelectric ceramic through torque, and the assembly requirements cannot be met; and the method of applying hydraulic pressure to the outside of the piezoelectric ceramic for installation, on the one hand, the hydraulic pressure is used for preload, and the torque when installing the nut will still affect the final preload force, making it difficult to achieve consistency in the assembly quality of the product; on the other hand, due to the relatively large pressure value of the hydraulic pressure, direct use is prone to damage to the piezoelectric ceramic.

[0003] Therefore, in view of the deficiencies in the prior art, the utility model designs a high-power ultrasonic transducer assembly device to solve the above problems.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solution of the utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the utility model. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model aims to provide a high-power ultrasonic transducer assembly device for ensuring that the installation preload force of piezoelectric ceramics can reach the specified standard and improve the consistency of installation quality.

[0006] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a high-power ultrasonic transducer assembly device, the ultrasonic transducer includes a transducer body, a mounting screw is provided on the transducer body, a piezoelectric ceramic is provided on the outer periphery of the mounting screw, and a locking nut for pressing the piezoelectric ceramic onto the transducer body is provided on the top of the mounting screw; the assembly device includes a workbench and a nut sleeve, wherein:

[0007] A parallel pressing plate is arranged above the workbench, and the pressing plate and the workbench are connected by two mutually parallel supporting columns; the pressing plate is provided with an installation avoidance through hole; a push plate is arranged between the pressing plate and the workbench, and both sides of the push plate are slidably connected with the supporting columns, and the push plate is provided with a first profiling positioning groove corresponding to the installation avoidance through hole, and the ultrasonic transducer is positioned and placed through the first profiling positioning groove, and the ultrasonic transducer is fixed in cooperation with the pressing plate. A booster cylinder is arranged under the workbench, and the booster cylinder is a pre-pressurized gas-liquid booster cylinder, which can be pre-pressurized with air pressure first, and then pressurized with oil pressure; the output end of the booster cylinder passes through the workbench and is connected to the lower end of the push plate.

[0008] The nut sleeve is movably arranged in the installation avoidance through hole, and a second contour positioning groove is arranged below the nut sleeve. During the assembly process, the second contour positioning groove can be positioned and connected with the locking nut, and a torque wrench connection groove is arranged above the nut sleeve.

[0009] The preferred technical solution is: a guide plate is provided between the push plate and the workbench, the two sides of the guide plate are fixedly connected to the support columns, the guide plate is provided with guide holes corresponding to the installation avoidance through holes, and a top column is provided at the output end of the booster cylinder, and the outer periphery of the top column is connected to the outer periphery of the guide hole.

[0010] The preferred technical solution is: a ball groove is provided at the top of the top column, a stainless steel ball is provided in the ball groove, an arc-shaped positioning groove is provided at the lower end of the push plate corresponding to the ball groove, the arc-shaped positioning groove and the stainless steel ball can be slidably connected, and the stainless steel ball is used to reduce the lateral force on the push plate caused by the deviation of the movement axis, thereby improving the stability of the push plate movement and avoiding jamming.

[0011] The preferred technical solution is: two mutually parallel support columns are fixed on one side by a connecting plate to ensure the stability of the connection of the support columns.

[0012] The preferred technical solution is: a vertical guide rail is provided on the connecting surface between the support column and the push plate, a slide groove is provided on the push plate, and the slide groove is slidably connected to the guide rail to improve the accuracy of the push plate's stroke.

[0013] The preferred technical solution is: a positioning ring is provided at the lower end of the pressing plate for positioning and connecting with the top of the ultrasonic transducer to improve the stability of the ultrasonic transducer during assembly.

[0014] Due to the application of the above technical solution, the high-power ultrasonic transducer assembly device provided by the utility model has the following advantages over the prior art:

[0015] (1) A booster cylinder is used to pre-pressurize the piezoelectric ceramics with air pressure, and then the piezoelectric ceramics are further compressed with hydraulic pressure. The two-stage progressive pressure increase method can reduce the risk of piezoelectric ceramics being compressed and cracked.

[0016] (2) A nut sleeve is added to cooperate with the locking nut, and a torque wrench can be used to apply a fixed torque to the locking nut, thereby improving the consistency of the preload force after the piezoelectric ceramic is installed.

[0017] (3) A sphere is used as an intermediate connecting piece to reduce the lateral force generated by axial deviation during the pressurization process and avoid the problem of the push plate getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a high-power ultrasonic transducer assembly device of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of a high-power ultrasonic transducer in the embodiment;

[0020] Figure 3 This is an exploded view of a high-power ultrasonic transducer assembly device of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the medium pressure plate of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the support column in the utility model;

[0023] Figure 6 It is a structural schematic diagram of the push plate in the utility model.

[0024] In the above drawings, 100, transducer body; 101, mounting screw; 102, piezoelectric ceramic; 103, locking nut; 1, workbench; 11, pressure plate; 11a, installation avoidance through hole; 11b, positioning ring; 12, support column; 12a, connecting plate; 12b, guide rail; 13, push plate; 13a, first contour positioning groove; 13b, arc positioning groove; 13c, slide groove; 14, booster cylinder; 15, guide plate; 15a, guide hole; 16, top column; 16a, ball groove; 16b, stainless steel ball; 2, nut sleeve; 21, second contour positioning groove; 22, torque wrench connecting groove. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example:

[0029] like Figure 2 As shown, the high-power ultrasonic transducer includes a transducer body 100 , on which a mounting screw 101 is provided, a piezoelectric ceramic 102 is provided on the periphery of the mounting screw 101 , and a locking nut 103 for pressing the piezoelectric ceramic 102 onto the transducer body 100 is provided on the top of the mounting screw 101 .

[0030] like Figure 1 As shown, the utility model discloses a high-power ultrasonic transducer assembly device, which is used for assembling a high-power ultrasonic transducer. The structure includes a workbench 1 and a nut sleeve 2. The main components of the utility model are described in detail below:

[0031] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a pressing plate 11 parallel to the workbench 1 is provided above the workbench 1, and the pressing plate 11 and the workbench 1 are connected and fixed by two mutually parallel supporting columns 12, and one side of the two mutually parallel supporting columns 12 is fixed by a connecting plate 12a; an installation avoidance through hole 11a is provided on the pressing plate 11, and a positioning ring 11b is provided at the lower end of the pressing plate 11; a push plate 13 is provided between the pressing plate 11 and the workbench 1, and a vertical guide rail 12b is provided on the connecting surface of the supporting column 12 and the push plate 13, and a slide groove 13c is provided on the push plate 13, and the slide groove 13c is slidably connected with the guide rail 12b. A first contoured positioning groove 13a corresponding to the installation avoidance through hole 11a is provided on the push plate 13; a guide plate 15 is provided between the push plate 13 and the workbench 1, and both sides of the guide plate 15 are fixedly connected to the support column 12, and a guide hole 15a corresponding to the installation avoidance through hole 11a is provided on the guide plate 15; a booster cylinder 14 is provided below the workbench 1, and the booster cylinder 14 is a pre-pressurized gas-liquid booster cylinder, and a top column 16 is provided at the output end of the booster cylinder 14, and the top column 16 passes through the workbench 1 and its outer periphery is connected to the outer periphery of the guide hole 15a; a ball groove 16a is provided at the top of the top column 16, and a stainless steel ball 16b is provided in the ball groove 16a, and an arc-shaped positioning groove 13b is provided at the lower end of the push plate 13 corresponding to the ball groove 16a, and the arc-shaped positioning groove 13b and the stainless steel ball 16b can be slidably connected. It should be noted that the above structure is merely exemplary and not restrictive. In the present embodiment, the push plate 13 and the top column 16 are connected via the stainless steel ball 16 b , but in other embodiments, the push plate 13 and the top column 16 may also be directly connected.

[0032] like Figure 1 and Figure 3 As shown, the nut sleeve 2 is movably arranged in the installation avoidance through hole 11a, and a second profiling positioning groove 21 is provided below it. The second profiling positioning groove 21 can be positioned and connected with the locking nut 103, and a torque wrench connection groove 22 is provided above the nut sleeve 2.

[0033] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the principle of the utility model is as follows: when in use, the assembly device positions and fixes the high-power ultrasonic transducer through the pressure plate 11 and the push plate 13, and the output end of the booster cylinder 14 is transmission-connected to the push plate 13. During assembly, the booster cylinder 14 first pre-presses the piezoelectric ceramic 102 through a relatively low pressure gas pressure; when the piezoelectric ceramic 102 is compressed to a certain extent, the booster cylinder 14 continues to pressurize it using hydraulic pressure, and the pressurization method at both ends can avoid damage to the piezoelectric ceramic 102 due to a sudden increase in pressure; after the piezoelectric ceramic 102 is pressurized by the booster cylinder 14, the nut sleeve 2 is passed through the installation avoidance through hole 11a to connect with the locking nut 103, and the torque wrench connecting groove 22 on the nut sleeve 2 is connected to the torque wrench, and the torque wrench selects the torque according to the pitch of the locking nut 103, and locks it to ensure the consistency of the pre-pressure of the piezoelectric ceramic 102.

[0034] In summary, the high-power ultrasonic transducer assembly device disclosed in the utility model ensures the accuracy and consistency of the preload force of the piezoelectric ceramics after assembly through segmented pressurization and final locking using a torque device, thereby avoiding the possibility of damage to the piezoelectric ceramics during the assembly process.

[0035] The above embodiments provided by the present invention are only intended to illustrate the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A high-power ultrasonic transducer assembly device, the high-power ultrasonic transducer comprising a transducer body (100), a mounting screw (101) being provided on the transducer body (100), a piezoelectric ceramic (102) being provided on the periphery of the mounting screw (101), a locking nut (103) being provided on the top of the mounting screw (101) for pressing the piezoelectric ceramic (102) onto the transducer body (100), characterized in that: The assembly device comprises a workbench (1) and a nut sleeve (2), wherein: A press plate (11) parallel to the workbench (1) is provided above the workbench (1), and the press plate (11) is connected to the workbench (1) via two mutually parallel support columns (12); an installation avoidance through hole (11a) is provided on the press plate (11); a push plate (13) is provided between the press plate (11) and the workbench (1), and both sides of the push plate (13) are slidably connected to the support columns (12), and a first contoured positioning groove (13a) corresponding to the installation avoidance through hole (11a) is provided on the push plate (13); a booster cylinder (14) is provided below the workbench (1), and the booster cylinder (14) is a pre-pressurized gas-liquid booster cylinder, and the output end of the booster cylinder (14) passes through the workbench (1) and is connected to the lower end of the push plate (13); The nut sleeve (2) is movably arranged in the installation avoidance through hole (11a), and a second contour positioning groove (21) is provided below it. The second contour positioning groove (21) can be positioned and connected with the locking nut (103), and a torque wrench connecting groove (22) is provided above the nut sleeve (2).

2. A high-power ultrasonic transducer assembly device according to claim 1, characterized in that: A guide plate (15) is provided between the push plate (13) and the workbench (1), and the two sides of the guide plate (15) are fixedly connected to the support column (12). The guide plate (15) is provided with a guide hole (15a) corresponding to the installation avoidance through hole (11a). The output end of the booster cylinder (14) is provided with a top column (16), and the outer periphery of the top column (16) is connected to the outer periphery of the guide hole (15a).

3. A high-power ultrasonic transducer assembly device according to claim 2, characterized in that: A ball groove (16a) is provided at the top of the top column (16), a stainless steel ball (16b) is provided in the ball groove (16a), an arc-shaped positioning groove (13b) is provided at a position corresponding to the ball groove (16a) at the lower end of the push plate (13), and the arc-shaped positioning groove (13b) and the stainless steel ball (16b) can be slidably connected.

4. The high-power ultrasonic transducer assembly device according to claim 1, characterized in that: One side of the two mutually parallel support columns (12) is fixed by a connecting plate (12a).

5. The high-power ultrasonic transducer assembly device according to claim 1, characterized in that: A vertical guide rail (12b) is provided on the connection surface between the support column (12) and the push plate (13); a slide groove (13c) is provided on the push plate (13); and the slide groove (13c) is slidably connected to the guide rail (12b).

6. The high-power ultrasonic transducer assembly device according to claim 1, characterized in that: A positioning ring (11b) is provided at the lower end of the pressing plate (11).

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