A swing mechanism, a rubber surface packaging device and an ultrasonic transducer

Abstract

A swing mechanism, a rubber surface packaging device and an ultrasonic transducer belong to the technical field of medical devices. The swing mechanism comprises: a first swing part provided with a first rotating unit and a first swing arm fixed with the output end of the first rotating unit; a second swing part installed on the first swing arm and provided with a second rotating unit and a second swing arm fixed with the output end of the second rotating unit; wherein the first swing arm drives the second swing part to swing left and right along the x-axis; and the second swing arm swings left and right along the y-axis. The swing mechanism ensures that the rubber surface can be completely and uniformly applied to the surface of the ultrasonic transducer, and also ensures that different transducers have the same rubber surface thickness.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a swing mechanism, an adhesive surface encapsulation device, and an ultrasonic transducer. Background Technology

[0002] An ultrasonic transducer is a device that can convert electrical signals into ultrasonic waves and vice versa. Ultrasonic transducers are widely used in medical ultrasound diagnostics, ultrasonic non-destructive testing, and medical ultrasound therapy.

[0003] Currently, in the field of medical ultrasound therapy, high-intensity focused ultrasound (HIFU) transducers are widely used in medical ultrasound therapy equipment for treating deep tissues due to their high acoustic output power and precise focus control. In this application, HIFU transducers typically do not come into direct contact with the skin; instead, they indirectly contact the skin through a medical-grade deoxygenated water medium. The acoustic impedance of the piezoelectric ceramic material used in the transducer is generally greater than that of human tissue and deoxygenated water. Ultrasonic waves are reflected at the interface between these two media with different acoustic impedances, resulting in energy loss.

[0004] To minimize energy loss in high-intensity focused ultrasound (HIFU) transducers (HIFU) while protecting their piezoelectric ceramics and extending their lifespan, a protective layer adhesive sealing step has been added to the manufacturing process of therapeutic HIFU transducers. This additional protective layer adhesive allows for better coupling between the high acoustic impedance piezoelectric material and the low acoustic impedance working medium, which plays a crucial role in the acoustic output power and focal point quality of the HIFU transducer.

[0005] Currently, in the sealing process of the protective adhesive layer for high-intensity focused ultrasound (HIFU) transducers, manual operation is mainly used to uniformly shake the HIFU transducer after the adhesive has been poured in, so that the adhesive can be naturally and evenly spread across the entire transducer surface. However, due to the inherent uncertainties of manual operation, it is difficult to guarantee that the adhesive can be applied completely and evenly, and it is also impossible to guarantee that different transducers will have the same adhesive thickness.

[0006] Based on the above problems, there is an urgent need for a device suitable for adhesive surface encapsulation of ultrasonic transducers. Summary of the Invention

[0007] To solve the aforementioned technical problems, this utility model provides a swinging mechanism, an adhesive coating device, and an ultrasonic transducer, ensuring that the adhesive can be applied completely and evenly to the surface of the ultrasonic transducer, while also ensuring that different transducers have the same adhesive thickness.

[0008] In a first aspect, this utility model provides a swinging mechanism, comprising: a first swinging part having a first rotating unit and a first swinging arm fixed to the output end of the first rotating unit; and a second swinging part mounted on the first swinging arm having a second rotating unit and a second swinging arm fixed to the output end of the second rotating unit; wherein the first swinging arm drives the second swinging part to swing left and right along the x-axis; and the second swinging arm swings left and right along the y-axis.

[0009] In a second aspect, this utility model provides an adhesive surface encapsulation device, comprising: the aforementioned swing mechanism, an installation platform mounted on the swing mechanism, and positioning columns fixed to the installation platform, wherein the installation platform is used to install the encapsulated workpiece, is fixed to the second swing arm, and swings along the X-axis and Y-axis directions on a horizontal plane under the drive of the swing mechanism; multiple positioning columns are provided and evenly distributed around the installation platform for the installation and positioning of the encapsulated workpiece.

[0010] A third aspect of this utility model provides an ultrasonic transducer, including a piezoelectric ceramic and a protective adhesive layer matching the piezoelectric ceramic, wherein the protective adhesive layer is encapsulated using the aforementioned adhesive layer encapsulation equipment.

[0011] The technical solution of this utility model adopts a double swing mechanism linkage to form a two-degree-of-freedom swing mechanism to complete the constant speed, constant angle and timed movement of the transducer mold installation platform. At the same time, this type of mechanism has a simple structure, is very convenient to disassemble and maintain, operates stably and reliably, and has a certain load-bearing capacity, which can adapt to the surface adhesive encapsulation of high-strength focused ultrasonic transducers of different sizes and curvature radii.

[0012] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0014] Figure 1 This is a schematic diagram of the overall structure of the swing mechanism in this embodiment;

[0015] Figure 2 This is a schematic diagram of the structure of the first swinging part of the swinging mechanism in this embodiment;

[0016] Figure 3 This is a schematic diagram of the structure of the second swing section of the swing mechanism in this embodiment;

[0017] Figure 4 This is a schematic diagram of the control unit of the swing mechanism in this embodiment;

[0018] Figure 5 This is a schematic diagram of the adhesive surface encapsulation device in this embodiment. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0021] The first aspect of this utility model is to provide a swinging mechanism, such as... Figure 1 As shown, it includes: a first swinging part 100, which has a first rotating unit 110 and a first swinging arm 120 fixed to the output end of the first rotating unit 110; and a second swinging part 200, which is mounted on the first swinging arm 120, and has a second rotating unit 210 and a second swinging arm 220 fixed to the output end of the second rotating unit 210. The first swinging arm 120 drives the second swinging part 200 to swing left and right along the x-axis; the second swinging arm 220 swings left and right along the y-axis. Specifically, the first swinging arm 120 is perpendicular to the rotation axis of the first rotating unit 110. The second swinging arm 220 is perpendicular to the rotation axis of the second rotating unit 210. The specific swing trajectory is as follows: the first swinging arm 120 swings left and right along the circumference of the rotation axis with a fixed radius on the cross-section of the rotation axis, with the rotation axis as the center. The swing trajectory of the first swinging arm 120 is fan-shaped. The second swing arm 220, centered on the rotation axis of the second rotating unit 210, swings left and right along the circumference with a fixed radius on the cross-section of the rotation axis, forming a fan-shaped swing trajectory. The fixed radius depends on the arm lengths of the first swing arm 120 and the second swing arm 220. By using two sets of swinging parts installed at 90° angles, the workpiece mounted on the second swing arm 220 can swing back, forth, left, and right, satisfying the two-degree-of-freedom swing requirement.

[0022] The upper and lower swing parts of this swing mechanism use the same mechanical structure. During assembly, the two identical mechanisms are directly combined. Compared with a single swing mechanism, it only has the necessary components such as motor, reducer, pulley, and belt, and is easy to disassemble and assemble. The two identical swing parts also reduce the overall complexity.

[0023] In the above embodiment, the first swinging part 100 is further provided with a first base 130 for fixing the swinging mechanism, wherein the first base 130 is used to install the first rotating unit 110. In addition to satisfying the installation of the first rotating unit 110, the first base 130 is also used to install on a fixed base or other equipment, so as to stabilize the swinging mechanism and improve the stability and reliability of the overall equipment.

[0024] In the above embodiment, the first rotating unit 110 includes a first motor 111 and a first rotating shaft 112. The first motor 111 is mounted on the first base 130, and the output end of the first motor 111 drives the first swing arm 120 to swing through the first rotating shaft 112. In actual use, the output end of the first motor 111 can be directly installed at the fixed point of the first swing arm 120, and the swing arm can be swung by the rotation of the motor. However, based on the motor speed and actual needs, it is generally necessary to adjust the motor speed to meet the requirements. At this time, it is necessary to add a regulator to the motor or set a regulator at the output end of the motor. This operation will increase the length of the motor, thereby increasing the size of the device, which is not suitable for the requirements of integrated and miniaturized devices.

[0025] Therefore, in this embodiment, as Figure 2 As shown, a first rotating shaft 112 parallel to the output end of the first motor 111 is provided. The wheel at the output end of the first motor 111 is connected to one end of the first rotating shaft 112 via a conveyor belt 113, transmitting rotation to the first rotating shaft 112. The first rotating shaft 112 then drives the first swing arm 120, fixed to the other end of the first rotating shaft 112, to swing. To increase the swing torque and improve control accuracy, a reducer is provided at the first motor 111 to reduce the rotational speed. To further increase the swing torque and improve control accuracy, a speed reducer can also be provided as shown. Figure 2 As shown, a speed reducer is also provided on the first rotating shaft 112. Since the first motor 111 and the first rotating shaft 112 are arranged in parallel, even if speed reducers are added separately, the overall size of the equipment will not be increased, and the degree of integration is high.

[0026] One implementation method, such as Figure 2As shown, a first mounting plate 131 and a second mounting plate 132 perpendicular to the first base 130 are provided on the first base 130. The first mounting plate 131 is used to mount the first motor 111, and the second mounting plate 132 is used to mount the first rotating shaft 112 and the first swing arm 120 fixed to the end of the first rotating shaft 112. The output end of the first motor 111 passes through the first mounting plate 131 to mount a rotating wheel. Both ends of the first rotating shaft 112 pass through the second mounting plate 132. A follower wheel is mounted on one end on the same side as the rotating wheel of the first motor 111, and a fixed wheel is mounted on the other end. The fixed wheel is fixed to the first swing arm 120. The rotating wheel of the first motor 111 is connected to the follower wheel of the first rotating shaft 112 through the conveyor belt 113, thereby driving the first rotating shaft 112 to rotate, which in turn drives the first swing arm 120 to swing through the fixed wheel. To increase rotational accuracy and tighten the conveyor belt, multiple follower wheels can be provided, so that each group of wheels is triangularly distributed.

[0027] In the above embodiment, the second swinging part 200 has the same structure as the first swinging part 100, except that the first swinging part 100 is rotated by 90° to achieve a different swinging direction, thus realizing a two-degree-of-freedom swinging operation. The specific structure of the second swinging part 200 is as follows: Figure 3 As shown, the second swinging part 200 is further provided with a second base 230, wherein the second base 230 is fixed to the first swing arm 120; the second base 230 is used to install the second rotating unit 210. The second rotating unit 210 includes a second motor 211 and a second rotating shaft 212, wherein the second motor 211 is mounted on the second base 230, and the wheel at the output end of the second motor 211 is connected to one end of the second rotating shaft 212 through a conveyor belt 213, transmitting rotation to the second rotating shaft 212, which then drives the second swing arm 220 fixed to the other end of the second rotating shaft 212 to swing. The second base 230 is provided with a third mounting plate 231 and a fourth mounting plate 232 perpendicular to the second base 230, wherein the third mounting plate 231 is used to install the second motor 211, and the fourth mounting plate 232 is used to install the second rotating shaft 212 and the second swing arm 220 fixed to the end of the second rotating shaft 212.

[0028] In the above embodiments, such as Figure 2 and Figure 3 As shown, the first rotating shaft 112 or the second rotating shaft 212 is equipped with a speed reducer to reduce the rotation speed of the first motor 111 or the second motor 211, thereby increasing the swing torque and improving control accuracy. The first motor 111 and the second motor 211 include, but are not limited to, using servo motors as driving devices.

[0029] In the above embodiments, the swing mechanism is further provided with a control unit, wherein the control unit is provided with a first driver and a second driver that are electrically connected to the first rotation unit and the second rotation unit respectively, and a dual-channel servo drive board that controls the first driver and the second driver respectively.

[0030] In the above embodiment, the control unit is connected to the terminal device, wherein the terminal device is used to preset the swing parameters of the swing mechanism, and to control the swing posture of the first rotation unit and the second rotation unit respectively through an electrical connection to the dual-channel servo drive board, so as to realize the swing requirements of the swing mechanism and to realize the first rotation unit and the second rotation unit to swing with different parameters. The swing parameters are not limited to swing angle, swing speed, swing time, etc.

[0031] Specifically, such as Figure 4 As shown, the control unit consists of a dual-channel servo drive board, a first driver, a second driver, and a power distribution and control circuit. The first motor and the second motor are connected to the first and second drivers respectively via control cables. The dual-channel servo drive board receives control signals from the terminal device and transmits them to the first and second drivers to control their movement. The power distribution and control circuit controls the start and stop of the device. The control unit is interconnected with a terminal computer, which generates control and parameter setting signals to the dual-channel servo drive control board. The dual-channel servo drive control board outputs control signals to the first and second drivers according to the instructions from the terminal computer. The first and second drivers control the movement of the first and second motors respectively via a first control cable and a second control cable.

[0032] A second aspect of this utility model provides an adhesive surface encapsulation device, such as... Figure 5 As shown, the system includes: the aforementioned swing mechanism, a mounting platform 300 mounted on the swing mechanism, and positioning columns 400 fixed to the mounting platform 300. The mounting platform 300, used for mounting and encapsulating workpieces, is fixed to the second swing arm 220 and swings along the X and Y axes on a horizontal plane under the drive of the swing mechanism. Multiple positioning columns 400 are evenly distributed around the mounting platform 300 for positioning and mounting the encapsulated workpieces. A first base 130 serves as the base of the entire mechanism, upon which the entire structural components are built. A first motor 111 is connected to a first rotating shaft 112 via a synchronous conveyor belt 113 to control the swinging motion of the second base 230 fixed to the first swing arm 120 in the X direction. A second motor 211 is connected to a second rotating shaft 212 via a synchronous conveyor belt 213 to control the swinging motion of the mounting platform 300 mounted on the second swing arm 220 in the Y direction. The terminal equipment connected to the swing mechanism presets swing parameters according to the sealing characteristics and requirements of the adhesive surface.

[0033] A third aspect of this utility model provides an ultrasonic transducer, including a piezoelectric ceramic and a protective adhesive layer matching the piezoelectric ceramic. The protective adhesive layer is manufactured using the aforementioned adhesive layer encapsulation equipment. The encapsulation equipment is connected to a terminal device and includes a parameter setting and control module for a two-degree-of-freedom swing mechanism of the ultrasonic transducer adhesive layer encapsulation, used to complete the parameter setting and control of the swing mechanism. The specific encapsulation process includes the following steps:

[0034] Step 1: Device initialization;

[0035] Step 1.1: Send an initialization command from the terminal computer and transmit the command to the first driver and the second driver respectively through the dual-channel servo drive control board;

[0036] Step 1.2: After receiving the initialization command, the dual-channel servo drive control board, the first driver, and the second driver complete the initialization process;

[0037] Step 1.2.1: The dual-channel servo drive control board detects the operating status of the first driver and the second driver through the first control cable and the second control cable respectively, and feeds the status back to the terminal computer;

[0038] Step 1.2.2: The terminal computer determines whether the device initialization is complete based on the running status information returned by the dual-channel servo control board;

[0039] Step 2: Send the parameter setting command to the dual-channel servo drive control board through the terminal computer. The dual-channel servo drive control board sets the working parameters according to the parameters provided by the parameter setting command.

[0040] Step 3: Install the ultrasonic transducer with the required adhesive sealant onto the mounting platform, and position and secure it using positioning posts;

[0041] Step 4: The preparation command is sent to the dual-drive control board through the terminal computer. The dual-drive control board sends control signals to the first drive and the second drive according to the provided preparation parameters to control the first motor and the second motor to perform relevant preparation actions respectively.

[0042] Step 5: Slowly pour the pre-prepared adhesive for encapsulating the ultrasonic transducer into the fixed transducer.

[0043] Step 6: Send the start command to the dual-drive control board through the terminal computer. The dual-drive control board sends control signals to the first drive and the second drive according to the preset working parameters to control the first motor and the second motor to perform relevant actions respectively.

[0044] Step 7: When the swing mechanism meets the termination conditions, the dual-drive control board sends control signals to the first drive and the second drive according to the preset working parameters to control the first motor and the second motor to perform relevant stopping actions respectively.

[0045] Step 8: Remove the ultrasonic transducer with the adhesive coating completed from the installation platform and place it in the designated location for the next process.

[0046] Reducers are installed at the first motor 111, the first rotating shaft 112, the second motor 211, and the second rotating shaft 212, respectively. These reduce speed while increasing the operating torque of the swing mechanism, thus improving its load-bearing capacity. Furthermore, since the mounting platform 300 is mounted on the swing mechanism, it can be flexibly replaced. Different models, radii of curvature, and sizes of transducer mold platforms can be flexibly interchanged to achieve different transducer encapsulation applications.

[0047] This embodiment employs a two-degree-of-freedom oscillating mechanism for the adhesive encapsulation of ultrasonic transducers. This mechanism, linked by two oscillating elements, enables the transducer mold mounting platform to move at a constant speed, angle, and time. In the adhesive encapsulation process, it allows for slow, even mixing of the adhesive on the transducer surface, preventing air bubbles from being trapped when the viscous adhesive contacts the transducer surface, thus improving the success rate of adhesive encapsulation. Furthermore, this type of mechanism is simple in structure, easy to disassemble and maintain, operates stably and reliably, and has a certain load-bearing capacity, making it suitable for adhesive encapsulation of high-intensity focused ultrasonic transducers of different sizes and radii of curvature.

[0048] In the description of this utility model, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] In the description of this utility model specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A swing mechanism, characterized in that, include: The first swinging part is provided with a first rotating unit and a first swinging arm fixed to the output end of the first rotating unit; The second swinging part, mounted on the first swinging arm, includes a second rotating unit and a second swinging arm fixed to the output end of the second rotating unit; wherein... The first swing arm drives the second swing part to swing left and right along the x-axis; The second swing arm swings left and right along the y-axis.

2. The swing mechanism according to claim 1, characterized in that, The first swinging part is further provided with a first base for fixing the swinging mechanism, wherein, The first base is used to mount the first rotating unit.

3. The swing mechanism according to claim 2, characterized in that, The first rotating unit includes a first motor and a first rotating shaft, wherein, The first motor is mounted on the first base, and the output end of the first motor drives the first swing arm to swing through the first rotating shaft.

4. The swing mechanism according to claim 3, characterized in that, The second swinging part is also provided with a second base, wherein, The second base is fixed to the first swing arm; The second base is used to mount the second rotating unit.

5. The swing mechanism according to claim 4, characterized in that, The second rotating unit includes a second motor and a second rotating shaft, wherein, The second motor is mounted on the second base, and the output end of the second motor drives the second swing arm to swing through the second rotating shaft.

6. The swing mechanism according to claim 5, characterized in that, The first or second rotating shaft is equipped with a speed reducer to reduce the rotation speed of the first or second motor.

7. The swing mechanism according to claim 1, characterized in that, The swing mechanism also includes a control unit, wherein... The control unit is equipped with a first driver and a second driver that are electrically connected to the first rotating unit and the second rotating unit respectively, and a dual-channel servo drive board that controls the first driver and the second driver respectively.

8. The swing mechanism according to claim 7, characterized in that, The control unit is connected to the terminal device, wherein... The terminal device is used to preset the swing parameters of the swing mechanism and to control the swing posture of the first rotation unit and the second rotation unit respectively by electrically connecting to the dual-channel servo drive board.

9. A glue-coating device, characterized in that, include: The swing mechanism according to any one of claims 1-8, the mounting platform mounted on the swing mechanism, and the positioning column fixed to the mounting platform, wherein, The mounting platform is used to mount the packaged workpiece and is fixed to the second swing arm. Under the drive of the swing mechanism, it swings along the X and Y axes on the horizontal plane. Multiple positioning posts are provided and evenly distributed around the mounting platform for positioning and mounting the encapsulated workpiece.

10. An ultrasonic transducer, characterized in that, It includes a piezoelectric ceramic and a protective adhesive layer that matches the piezoelectric ceramic, wherein, The protective layer adhesive surface is encapsulated using the adhesive surface encapsulation equipment described in claim 9.

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