Variable cross-section composite ultrasonic amplitude transformer with frequency modulation ring

Abstract

An input end frequency modulation ring is arranged or not arranged at the input end of the composite ultrasonic amplitude-change pole, and an output end frequency modulation ring is arranged at the output end of the composite ultrasonic amplitude-change pole. The distance L1 between the input end face of the input end frequency modulation ring and the input end of the ultrasonic input rod is 0-0.17 times of the length of the composite ultrasonic amplitude-change pole, and the distance L2 between the output end face of the output end frequency modulation ring and the output end face of the ultrasonic output rod is 0-0.17 times or 0-0.29 times of the length of the composite ultrasonic amplitude-change pole. And the mass ratio of the input end frequency modulation ring to the composite ultrasonic amplitude-change pole as well as the output end frequency modulation ring to the composite ultrasonic amplitude-change pole is 0.015-0.23. According to the variable cross-section composite ultrasonic amplitude-change pole, the overall equivalent mass of the amplitude-change pole is changed, the resonant frequency of the amplitude-change pole with the frequency modulation ring is reduced by 0.85%-31.01% or increased by 0.2%-5.81% compared with the resonant frequency of the amplitude-change pole without the frequency modulation ring, and the purpose of frequency matching is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical vibration, and particularly relates to an ultrasonic horn of an ultrasonic transducer. Background Art

[0002] Nowadays, with the rapid development of industry, the demand for materials is increasing day by day. Compared with the deficiencies of traditional processing technologies, ultrasonic technology has developed rapidly due to its characteristics such as high precision, high efficiency, and low energy consumption, and has been widely used. Also, due to its advantages of energy conservation, environmental protection, pollution-free, and green, in addition to the industrial field, it has also penetrated into fields such as aerospace, medicine, agriculture, and national defense. As an important part of the ultrasonic vibration system, the working resonance frequency point of the ultrasonic vibration system is the key to maintaining a long service life and high operating performance. Vibrating at the resonance frequency, the output amplitude is the largest, the working efficiency is the highest, and the service life is the longest.

[0003] Facing the requirements of different fields, the resonance frequency points of the ultrasonic vibration system are different. In ultrasonic vibration cutting, it is required that the tool vibrates at a frequency of 20 - 40 KHz along the cutting direction to machine super-hard or super-soft materials; in ultrasonic welding, depending on the different welded objects, welding machines with different frequencies such as 15 KHz, 20 KHz, and 30 KHz can be selected to improve the processing quality. For example, for the processing of precision parts, a high-frequency welding machine of 30 - 40 KHz is generally selected, with a smaller welding head and less vibration generated; for large-area products, a low-frequency welding machine of 15 - 20 KHz is selected, with a longer resonance; in ultrasonic cleaning, it is generally carried out within the ranges of 20 - 40 KHz and 68 - 120 KHz. The low-frequency band is suitable for cleaning large workpiece surfaces and places where the bonding strength between the dirt on the cleaning surface and the cleaning part is high, and the high-frequency band is used to clean parts with complex surface shapes. Currently, the ultrasonic cleaning process often adopts a multi-frequency method, using different frequencies for rough cleaning and cleaning.

[0004] At this time, to meet the application requirements and ensure the maximum output amplitude of the ultrasonic vibration system, it is necessary to reprocess the horn and connect it to the transducer. This method has a long processing cycle and high cost. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a variable cross-section composite ultrasonic horn with a frequency modulation ring, which is reasonably designed, simple in structure, and shape-adapted.

[0006] The technical solution adopted to solve the above technical problem is:

[0007] An input-end frequency modulation ring is provided or not provided at the input end of the composite ultrasonic horn, and an output-end frequency modulation ring is provided at the output end.

[0008] The compound ultrasonic horn of the present invention is: an ultrasonic input rod is connected or integrated at the input end of the frustum-shaped transition rod, and an ultrasonic output rod is connected or integrated at the output end. The input end frequency modulation ring is arranged on the periphery of the ultrasonic input rod, and the output end frequency modulation ring is arranged on the periphery of the ultrasonic output rod.

[0009] The transition rod of the present invention is a frustum, the ultrasonic input rod and the ultrasonic output rod are cylinders, the diameter ratio of the output end to the input end of the frustum is 1:1.2 - 1.8, the diameter of the input end face of the frustum is the same as the diameter of the ultrasonic input rod, and the diameter of the output end face of the frustum is the same as the diameter of the ultrasonic output rod.

[0010] The distance L1 between the input end face of the input end frequency modulation ring and the input end of the ultrasonic input rod is 0 - 0.17 times the length of the compound ultrasonic horn. The distance L2 between the output end face of the output end frequency modulation ring and the output end of the ultrasonic output rod is 0 - 0.17 times the length of the compound ultrasonic horn.

[0011] The mass ratio of the output end frequency modulation ring to the compound ultrasonic horn is 0.015 - 0.23. The mass of the input end frequency modulation ring is the same as that of the output end frequency modulation ring.

[0012] The compound ultrasonic horn of the present invention is: an ultrasonic input rod is connected or integrated at the input end of the Laval-shaped transition rod, and an ultrasonic output rod is connected or integrated at the output end. The input end frequency modulation ring is arranged on the periphery of the ultrasonic input rod, and the output end frequency modulation ring is arranged on the periphery of the ultrasonic output rod.

[0013] The Laval-shaped transition rod of the present invention is: a converging transition rod connected or integrated with the ultrasonic input rod is arranged at the input end of the Laval-shaped throat, and a diverging horn connected or integrated with the ultrasonic output rod is arranged at the output end.

[0014] The diameter ratio of the output end to the input end of the converging transition rod of the present invention is 1:2 - 4; the diameter ratio of the input end to the output end of the diverging horn is 1:2 - 4. The distance L1 between the input end face of the input end frequency modulation ring and the input end of the ultrasonic input rod is 0 - 0.17 times the length of the compound ultrasonic horn; the distance L2 between the output end face of the output end frequency modulation ring and the output end of the ultrasonic output rod is 0 - 0.29 times the length of the compound ultrasonic horn.

[0015] The mass ratio of the output end frequency modulation ring to the compound ultrasonic horn is 0.015 - 0.23, and the mass of the input end frequency modulation ring is the same as that of the output end frequency modulation ring.

[0016] Since the present invention is configured to provide or not provide an input frequency modulation ring at the input end of the composite ultrasonic horn and an output frequency modulation ring at the output end, and an output frequency modulation ring is provided at the output end of the ultrasonic horn, the overall equivalent mass of the horn is changed, such that the resonance frequency of the horn with the additional frequency modulation ring is reduced by 0.85% to 31.01% or increased by 0.2% to 5.81% compared to the resonance frequency of the horn without the additional frequency modulation ring, achieving the purpose of frequency matching. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of Embodiment 1 of the present invention.

[0018] Figure 2 is Figure 1 a schematic structural diagram of the composite ultrasonic horn 2 in

[0019] Figure 3 FIG. is a schematic structural diagram of Embodiment 5 of the present invention.

[0020] Figure 4 is Figure 3 a schematic structural diagram of the composite ultrasonic horn 2 in DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will be further described in detail below with reference to the drawings and embodiments, but the present invention is not limited to the following embodiments.

[0022] Embodiment 1

[0023] Figure 1 FIG. shows a schematic structural diagram of Embodiment 1 of the present invention. In Figure 1 , the variable cross-section composite ultrasonic horn with a frequency modulation ring in this embodiment is composed of an input frequency modulation ring 1, a composite ultrasonic horn 2, and an output frequency modulation ring 3 connected together. The input frequency modulation ring 1 is fixedly connected and installed at the input end of the composite ultrasonic horn 2 using a threaded fastening connector, and the output frequency modulation ring 3 is fixedly connected and installed at the output end of the composite ultrasonic horn 2 using a threaded fastening connector. The mass ratio of the output frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.015 to 0.23. In this embodiment, the mass ratio of the output frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.12. The mass of the input frequency modulation ring 1 is the same as that of the output frequency modulation ring 3, and the mass of the output frequency modulation ring 3 may also be different from the mass of the input frequency modulation ring 1, which should be specifically determined according to the vibration frequency and output power of the present invention.

[0024] Figure 2 FIG. shows a schematic structural diagram of the composite ultrasonic horn 2 in this embodiment. In Figure 2In this case, the composite ultrasonic horn 2 of this embodiment is formed by integrally connecting an ultrasonic input rod 2-1, a transition rod 2-2, and an ultrasonic output rod 2-3. An ultrasonic input rod 2-1 is integrally connected to the input end of the transition rod 2-2, and an ultrasonic output rod 2-3 is integrally connected to the output end of the transition rod 2-2. The transition rod 2-2 of this embodiment is a frustum of a cone, and the ultrasonic input rod 2-1 and the ultrasonic output rod 2-3 are cylinders. The ratio of the diameter of the output end to the diameter of the input end of the frustum of the cone is 1:1.2 to 1.8. In this embodiment, the ratio of the diameter of the output end to the diameter of the input end of the frustum of the cone is 1:1.5. The diameter of the input end face of the frustum of the cone is the same as the diameter of the ultrasonic input rod 2-1, and the diameter of the output end face of the frustum of the cone is the same as the diameter of the ultrasonic output rod 2-3. The input end frequency modulation ring 1 is fixedly connected and sleeved on the periphery of the ultrasonic input rod 2-1 with a threaded fastening member, and the output end frequency modulation ring 3 is fixedly connected and sleeved on the periphery of the ultrasonic output rod 2-3 with a threaded fastening member. The distance L1 between the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 is 0 to 0.17 times the length L2 of the composite ultrasonic horn 2. In this embodiment, the distance L1 between the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 is 0 times the length of the composite ultrasonic horn 2; the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 to 0.17 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 times the length of the composite ultrasonic horn 2, that is, the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 are in the same plane, and the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic input rod 2-1 are in the same plane.

[0025] The technical solution of this embodiment and the composite ultrasonic horn 2 installed with the input end frequency modulation ring 1 and the output end frequency modulation ring 3 were subjected to a computer simulation comparison experiment. The parameter selection during the experiment was as follows:

[0026] The length of the composite ultrasonic horn 2 was 133.15 mm, the mass was 530 g, and the mass of the input end frequency modulation ring 1 was 63 g; the diameter of the output end of the frustum of the cone of the transition rod 2-2 was 20.18 mm, and the diameter of the input end was 30.18 mm; the distance L1 between the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 was 0 mm, and the distance L2 between the output end face and the output end face of the ultrasonic output rod 2-3 was 0 mm;

[0027] Calculations were performed using Comsol software. When the frequency modulation ring was not installed, the longitudinal vibration frequency of the composite ultrasonic horn 2 was 20.152 KHz, and the longitudinal vibration frequency of this embodiment was 13.903 KHz, with the longitudinal vibration frequency reduced by 31.01%.

[0028] Embodiment 2

[0029] The variable cross-section composite ultrasonic horn with a frequency modulation ring in this embodiment is composed of an input-end frequency modulation ring 1, a composite ultrasonic horn 2, and an output-end frequency modulation ring 3 connected together. The connection relationship of the components is the same as that in Embodiment 1. The mass ratio of the input-end frequency modulation ring 1 to the composite ultrasonic horn 2 is 0.015 - 0.23. In this embodiment, the mass ratio of the input-end frequency modulation ring 1 to the composite ultrasonic horn 2 is 0.015. The mass of the output-end frequency modulation ring 3 is the same as that of the input-end frequency modulation ring 1, or the mass of the output-end frequency modulation ring 3 may also be different from that of the input-end frequency modulation ring 1, which should be specifically determined according to the vibration frequency and output power of the present invention.

[0030] The components of the composite ultrasonic horn 2 in this embodiment and the connection relationship of the components are the same as those in Embodiment 1. The transition section rod 2-2 in this embodiment is a frustum of a cone, and the ultrasonic input rod 2-1 and the ultrasonic output rod 2-3 are cylinders. The ratio of the output-end diameter to the input-end diameter of the frustum of a cone is 1:1.2 - 1.8. In this embodiment, the ratio of the output-end diameter to the input-end diameter of the frustum of a cone is 1:1.2. The distance L1 between the input end face of the input-end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 is 0 - 0.17 times the length L2 of the composite ultrasonic horn 2. In this embodiment, the distance L1 between the input end face of the input-end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 is 0.08 times the length of the composite ultrasonic horn 2; the distance L2 between the output end face of the output-end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 - 0.17 times the length L2 of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output-end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0.08 times the length of the composite ultrasonic horn 2, that is, the input end face of the input-end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 are not in the same plane, and the output end face of the output-end frequency modulation ring 3 and the output end face of the ultrasonic input rod 2-1 are not in the same plane.

[0031] The connection relationship of other components and the components is the same as that in Embodiment 1.

[0032] Embodiment 3

[0033] The variable cross-section composite ultrasonic horn with a frequency modulation ring in this embodiment is composed of an input-end frequency modulation ring 1, a composite ultrasonic horn 2, and an output-end frequency modulation ring 3 connected together. The connection relationship of the components is the same as that in Embodiment 1. The mass ratio of the input-end frequency modulation ring 1 to the composite ultrasonic horn 2 is 0.015 - 0.23. In this embodiment, the mass ratio of the input-end frequency modulation ring 1 to the composite ultrasonic horn 2 is 0.23. The mass of the output-end frequency modulation ring 3 is the same as that of the input-end frequency modulation ring 1, or the mass of the output-end frequency modulation ring 3 may also be different from that of the input-end frequency modulation ring 1, which should be specifically determined according to the vibration frequency and output power of the present invention.

[0034] The components of the ultrasonic horn in this embodiment and the connection relationships of the components are the same as those in Embodiment 1. The transition section rod 2-2 in this embodiment is a frustum of a cone, the ultrasonic input rod 2-1 and the ultrasonic output rod 2-3 are cylinders, and the ratio of the output end diameter to the input end diameter of the frustum of a cone is 1:1.2 to 1.8. In this embodiment, the ratio of the output end diameter to the input end diameter of the frustum of a cone is 1:1.8. The distance L1 between the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 is 0 to 0.17 times the length L2 of the composite ultrasonic horn 2. In this embodiment, the distance L1 between the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 is 0.17 times the length of the composite ultrasonic horn 2; the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 to 0.17 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0.17 times the length of the composite ultrasonic horn 2, that is, the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 are not in the same plane, and the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic input rod 2-1 are not in the same plane.

[0035] The connection relationships of other components and the components are the same as those in Embodiment 1.

[0036] Embodiment 4

[0037] The variable cross-section composite ultrasonic horn with a frequency modulation ring in this embodiment is composed of a composite ultrasonic horn 2 and an output end frequency modulation ring 3 connected. The connection relationships of the components are the same as those in Embodiment 1.

[0038] The mass ratio of the output end frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.015 to 0.23. In this embodiment, the mass ratio of the output end frequency modulation ring 3 to the composite ultrasonic horn 2 is the same as that in Embodiment 1.

[0039] The structure of the composite ultrasonic horn 2 and the connection relationships of the components are the same as those in Embodiment 1. The transition section rod 2-2 in this embodiment is a frustum of a cone, the ultrasonic input rod 2-1 and the ultrasonic output rod 2-3 are cylinders, and the ratio of the output end diameter to the input end diameter of the frustum of a cone is the same as that in Embodiment 1.

[0040] The distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 to 0.17 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is the same as that in Embodiment 1.

[0041] The connection relationships of other components and the components are the same as those in Embodiment 1.

[0042] The technical solution of this embodiment was compared with the compound ultrasonic horn 2 without the input - end frequency - modulation ring 1 and the output - end frequency - modulation ring 3 through a computer simulation experiment. The parameter selection during the experiment was as follows:

[0043] The length of the compound ultrasonic horn 2 was 133.15 mm, and its mass was 530 g. The mass of the input - end frequency - modulation ring 3 was 63 g. The output - end diameter of the frustum - shaped transition section rod 2 - 2 was 20.18 mm, and the input - end diameter was 30.18 mm. The distance L2 between the output end face and the output end face of the ultrasonic output rod 2 - 3 was 0 mm.

[0044] Comsol software was used for calculation. When the frequency - modulation ring was not installed, the longitudinal vibration frequency of the compound ultrasonic horn 2 was 20.152 KHz, and the longitudinal vibration frequency of this embodiment was 15.29 KHz, with the longitudinal vibration frequency reduced by 24.13%.

[0045] Embodiment 5

[0046] Figure 3 、 4 shows the structural schematic diagram of Embodiment 5 of the present invention. In Figure 3 、 4 The variable - cross - section compound ultrasonic horn with a frequency - modulation ring in this embodiment is composed of an input - end frequency - modulation ring 1, a compound ultrasonic horn 2, and an output - end frequency - modulation ring 3 connected. The connection relationship of the components is the same as that in Embodiment 1. The mass ratio of the output - end frequency - modulation ring 3 to the compound ultrasonic horn 2 is 0.015 - 0.23. In this embodiment, the mass ratio of the output - end frequency - modulation ring 3 to the compound ultrasonic horn 2 is 0.12. The mass of the output - end frequency - modulation ring 3 is the same as the mass of the input - end frequency - modulation ring 1, and the mass of the output - end frequency - modulation ring 3 may also be different from the mass of the input - end frequency - modulation ring 1, which should be specifically determined according to the vibration frequency and output power of the present invention.

[0047] The compound ultrasonic horn 2 in this embodiment is: at the input end of the Laval - shaped transition section rod 2 - 2, an ultrasonic input rod 2 - 1 is integrally connected, and at the output end, an ultrasonic output rod 2 - 3 is integrally connected. The input - end frequency - modulation ring 1 is fixedly connected and sleeved on the periphery of the ultrasonic input rod 2 - 1 with a threaded fastening member, and the output - end frequency - modulation ring 3 is fixedly connected and sleeved on the periphery of the ultrasonic output rod 2 - 3 with a threaded fastening member.

[0048] The Laval-shaped transition section rod 2-2 in this embodiment is as follows: The input end of the Laval-shaped throat is integrally connected to the output end of the convergent transition section rod 2-2. The input end of the convergent transition section rod 2-2 is integrally connected to the ultrasonic input rod 2-1. The diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:2 to 4. In this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:3. The output end of the Laval-shaped throat is integrally connected to the input end of the divergent horn 2-4. The output end of the divergent horn 2-4 is integrally connected to the ultrasonic output rod 2-3. The diameter ratio of the input end to the output end of the divergent horn 2-4 is 1:2 to 4. In this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:3.

[0049] The distance L1 between the input end face of the input end frequency modulation ring 1 and the input end of the ultrasonic input rod 2-1 is 0 to 0.17 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L1 between the input end face of the input end frequency modulation ring 1 and the input end of the ultrasonic input rod 2-1 is 0 times the length of the composite ultrasonic horn 2; The distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 to 0.29 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0.29 times the length of the composite ultrasonic horn 2.

[0050] The mass ratio of the output end frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.015 to 0.23. In this embodiment, the mass ratio of the output end frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.12, and the input end frequency modulation ring 1 and the output end frequency modulation ring 3 have the same mass.

[0051] The technical solution of this embodiment and the composite ultrasonic horn 2 installed with the input end frequency modulation ring 1 and the output end frequency modulation ring 3 have carried out computer simulation experiments. The parameter selection during the experiment is as follows:

[0052] The length of the composite ultrasonic horn 2 is 253 mm, the mass is 4097 g, and the mass of the input end frequency modulation ring 1 is 491 g; The output end diameter of the frustum of the transition section rod 2-2 is 20 mm, and the input end diameter is 60 mm; The distance L1 between the input end face of the input end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 is 0 mm, and the distance L2 between the output end face and the output end face of the ultrasonic output rod 2-3 is 228 mm;

[0053] Calculations were carried out using Comsol software. The longitudinal vibration frequency of the composite ultrasonic horn 2 without installing the frequency modulation ring is 19.883 KHz, and the longitudinal vibration frequency of this embodiment is 21.039 KHz, with the longitudinal vibration frequency increasing by 5.81%.

[0054] Embodiment 6

[0055] The variable cross-section composite ultrasonic horn with a frequency modulation ring in this embodiment is composed of an input-end frequency modulation ring 1, a composite ultrasonic horn 2, and an output-end frequency modulation ring 3 connected together. The connection relationship of the components is the same as that in Embodiment 5, and the structure of the composite ultrasonic horn 2 is the same as that in Embodiment 5.

[0056] In this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:2 to 4, and in this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:2; the diameter ratio of the input end to the output end of the divergent horn 2-4 is 1:2 to 4, and in this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:2.

[0057] The distance L1 between the input end face of the input-end frequency modulation ring 1 and the input end of the ultrasonic input rod 2-1 is 0 to 0.17 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L1 between the input end face of the input-end frequency modulation ring 1 and the input end of the ultrasonic input rod 2-1 is 0 times the length of the composite ultrasonic horn 2; the distance L2 between the output end face of the output-end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 to 0.29 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output-end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 times the length of the composite ultrasonic horn 2. That is, the input end face of the input-end frequency modulation ring 1 and the input end face of the ultrasonic input rod 2-1 are in the same plane, and the output end face of the output-end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 are in the same plane.

[0058] The mass ratio of the output-end frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.015 to 0.23. In this embodiment, the mass ratio of the output-end frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.015. The mass of the output-end frequency modulation ring 3 is the same as the mass of the input-end frequency modulation ring 1, and the mass of the output-end frequency modulation ring 3 may also be different from the mass of the input-end frequency modulation ring 1, which should be specifically determined according to the vibration frequency and output power of the present invention.

[0059] Other components and the connection relationship of the components are the same as those in Embodiment 5.

[0060] Embodiment 7

[0061] The variable cross-section composite ultrasonic horn with a frequency modulation ring in this embodiment is composed of an input-end frequency modulation ring 1, a composite ultrasonic horn 2, and an output-end frequency modulation ring 3 connected together. The connection relationship of the components is the same as that in Embodiment 5, and the structure of the composite ultrasonic horn 2 is the same as that in Embodiment 5.

[0062] In this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:2 to 4, and in this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:4; the diameter ratio of the input end to the output end of the divergent horn 2-4 is 1:2 to 4, and in this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is 1:4.

[0063] The distance L1 between the input end face of the input end frequency modulation ring 1 and the input end of the ultrasonic input rod 2-1 is 0 to 0.17 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L1 between the input end face of the input end frequency modulation ring 1 and the input end of the ultrasonic input rod 2-1 is 0.17 times the length of the composite ultrasonic horn 2; the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 to 0.29 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0.15 times the length of the composite ultrasonic horn 2.

[0064] The mass ratio of the output end frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.015 to 0.23. In this embodiment, the mass ratio of the output end frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.23. The mass of the output end frequency modulation ring 3 is the same as the mass of the input end frequency modulation ring 1, and the mass of the output end frequency modulation ring 3 may also be different from the mass of the input end frequency modulation ring 1, which should be specifically determined according to the vibration frequency and output power of the present invention.

[0065] Other components and the connection relationships of the components are the same as those in Embodiment 5.

[0066] Embodiment 8

[0067] The variable cross-section composite ultrasonic horn with a frequency modulation ring in this embodiment is composed of a composite ultrasonic horn 2 and an output end frequency modulation ring 3 connected together, where the structure of the composite ultrasonic horn 2 is the same as that in Embodiment 5.

[0068] In this embodiment, the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is the same as that in the corresponding embodiment, and the diameter ratio of the output end to the input end of the convergent transition section rod 2-2 is the same as that in Embodiment 5.

[0069] The distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is 0 to 0.29 times the length of the composite ultrasonic horn 2. In this embodiment, the distance L2 between the output end face of the output end frequency modulation ring 3 and the output end face of the ultrasonic output rod 2-3 is the same as that in Embodiment 5.

[0070] The mass ratio of the output frequency modulation ring 3 to the composite ultrasonic horn 2 is 0.015 - 0.23. In this embodiment, the mass ratio of the output frequency modulation ring 3 to the composite ultrasonic horn 2 is the same as that in Embodiment 5.

[0071] The other components and the connection relationships of the components are the same as those in Embodiment 5.

[0072] The technical solution of this embodiment is compared with the composite ultrasonic horn 2 without the input frequency modulation ring 1 and the output frequency modulation ring 3 through a computer simulation experiment. The parameter selection during the experiment is as follows:

[0073] The length of the composite ultrasonic horn 2 is 253 mm, the mass is 4097 g, and the mass of the output frequency modulation ring 3 is 491 g; the output end diameter of the frustum 2 - 2 of the transition section rod is 20 mm, and the input end diameter is 60 mm; the distance L1 between the input end face of the output frequency modulation ring 3 and the input end face of the ultrasonic input rod 2 - 1 is 140 mm, and the distance L2 between the output end face and the output end face of the ultrasonic output rod 2 - 3 is 33 mm.

[0074] Calculations are performed using Comsol software. The longitudinal vibration frequency of the composite ultrasonic horn 2 without the frequency modulation ring is 19.883 KHz, and the longitudinal vibration frequency of this embodiment is 20.904 KHz, with the longitudinal vibration frequency increased by 5.14%.

Claims

1. A variable cross-section composite ultrasonic horn with a frequency modulation ring, characterized in that: An input - end frequency - tuning ring (1) is provided or not provided at the input end of the compound ultrasonic horn (2), and an output - end frequency - tuning ring (3) is provided at the output end.

2. The variable cross-section composite ultrasonic horn with a frequency modulation ring according to claim 1, characterized in that: The compound ultrasonic horn (2) is such that: at the input end of the frustum - shaped transition section rod (2 - 2), an ultrasonic input rod (2 - 1) is connected or integrated, and at the output end, an ultrasonic output rod (2 - 3) is connected or integrated; the input - end frequency - tuning ring (1) is arranged on the periphery of the ultrasonic input rod (2 - 1), and the output - end frequency - tuning ring (3) is arranged on the periphery of the ultrasonic output rod (2 - 3).

3. The variable cross-section composite ultrasonic horn with a frequency modulation ring according to claim 2, characterized in that: The transition section rod (2 - 2) is a frustum, the ultrasonic input rod (2 - 1) and the ultrasonic output rod (2 - 3) are cylinders, the ratio of the diameter of the output end to the diameter of the input end of the frustum is 1:1.2 - 1.8, the diameter of the input - end face of the frustum is the same as the diameter of the ultrasonic input rod (2 - 1), and the diameter of the output - end face of the frustum is the same as the diameter of the ultrasonic output rod (2 - 3).

4. The variable cross-section composite ultrasonic horn with a frequency modulation ring according to claim 1 or 2, characterized in that: The distance L1 between the input - end face of the input - end frequency - tuning ring (1) and the input end of the ultrasonic input rod (2 - 1) is 0 - 0.17 times the length of the compound ultrasonic horn (2); the distance L2 between the output - end face of the output - end frequency - tuning ring (3) and the output end of the ultrasonic output rod (2 - 3) is 0 - 0.17 times the length of the compound ultrasonic horn (2).

5. The variable cross-section composite ultrasonic horn with a frequency modulation ring according to claim 1, characterized in that: The mass ratio of the output - end frequency - tuning ring (3) to the compound ultrasonic horn (2) is 0.015 - 0.23; the mass of the input - end frequency - tuning ring (1) is the same as the mass of the output - end frequency - tuning ring (3).

6. The variable cross-section composite ultrasonic horn with a frequency modulation ring according to claim 1, wherein The compound ultrasonic horn (2) is such that: at the input end of the Laval - shaped transition section rod (2 - 2), an ultrasonic input rod (2 - 1) is connected or integrated, and at the output end, an ultrasonic output rod (2 - 3) is connected or integrated; the input - end frequency - tuning ring (1) is arranged on the periphery of the ultrasonic input rod (2 - 1), and the output - end frequency - tuning ring (3) is arranged on the periphery of the ultrasonic output rod (2 - 3).

7. The variable cross-section composite ultrasonic horn with a frequency modulation ring according to claim 6, characterized in that The Laval - shaped transition section rod (2 - 2) is such that: at the input end of the Laval - shaped throat, a converging - shaped transition section rod (2 - 2) connected or integrated with the ultrasonic input rod (2 - 1) is provided, and at the output end, a diverging ultrasonic horn (2 - 4) connected or integrated with the ultrasonic output rod (2 - 3) is provided.

8. The variable cross-section composite ultrasonic horn with a frequency modulation ring according to claim 6, characterized in that: The ratio of the diameter of the output end to the diameter of the input end of the converging - shaped transition section rod (2 - 2) is 1:2 - 4; the ratio of the diameter of the input end to the diameter of the output end of the diverging ultrasonic horn (2 - 4) is 1:2 - 4; the distance L1 between the input - end face of the input - end frequency - tuning ring (1) and the input end of the ultrasonic input rod (2 - 1) is 0 - 0.17 times the length of the compound ultrasonic horn (2); the distance L2 between the output - end face of the output - end frequency - tuning ring (3) and the output end of the ultrasonic output rod (2 - 3) is 0 - 0.29 times the length of the compound ultrasonic horn (2).

9. The variable cross-section composite ultrasonic horn with a frequency modulation loop according to claim 6 or 8, characterized in that: The mass ratio of the output - end frequency - tuning ring (3) to the compound ultrasonic horn (2) is 0.015 - 0.23, and the mass of the input - end frequency - tuning ring (1) is the same as the mass of the output - end frequency - tuning ring (3).

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