CN219745432U - Longitudinal-radial coupled vibration multi-transducer parallel ultrasonic assembly - Google Patents
Longitudinal-radial coupled vibration multi-transducer parallel ultrasonic assembly Download PDFInfo
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- CN219745432U CN219745432U CN202321223706.5U CN202321223706U CN219745432U CN 219745432 U CN219745432 U CN 219745432U CN 202321223706 U CN202321223706 U CN 202321223706U CN 219745432 U CN219745432 U CN 219745432U
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- 239000004744 fabric Substances 0.000 claims 4
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000003321 amplification Effects 0.000 abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 7
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
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Abstract
The utility model provides a longitudinal path coupling vibration's multi-transducer parallel ultrasonic assembly, includes longitudinal path coupling converter, transducer assembly screw has all been seted up to longitudinal path coupling converter side central point put, transducer assembly screw department installs the transducer, and transducer assembly screw is central symmetry with longitudinal path coupling converter center and distributes, set up the luffing rod assembly screw on one terminal surface of longitudinal path coupling converter, install the luffing rod on the luffing rod assembly screw, install the instrument head on the luffing rod, every transducer matches a set of power amplification circuit, and both are connected with power cable, and every power amplification circuit connects in parallel to signal control circuit through the signal line on, carries out vibration control and frequency tracking to all transducers by signal control circuit.
Description
Technical Field
The utility model belongs to the technical field of ultrasonic assemblies, and particularly relates to a longitudinal-diameter coupled vibration multi-transducer parallel ultrasonic assembly.
Background
Ultrasonic equipment, particularly welding-type ultrasonic equipment, typically has an ultrasonic assembly that includes an ultrasonic transducer, one or more ultrasonic horns, an ultrasonic tool head, and an ultrasonic drive power source. The ultrasonic driving power supply is responsible for converting commercial power into high-frequency high-voltage alternating current signals, inputting the high-frequency high-voltage alternating current signals to the ultrasonic transducer, converting the electric signals into ultrasonic high-frequency vibration by the ultrasonic transducer, amplifying the vibration amplitude step by the amplitude transformer and the tool head, and finally applying the ultrasonic vibration to a workpiece.
The output power of the ultrasonic wave is determined by the ultrasonic driving power supply and the transducer, the larger the volume of the piezoelectric ceramic in the ultrasonic transducer is, the larger the power of the transducer is, but since the ultrasonic transducer is operated by resonance, the size of the ultrasonic transducer is determined by the ultrasonic vibration frequency, for example, the ultrasonic transducer of 20kHz, the length of one half-wavelength transducer is generally between 110mm and 130mm, and the diameter of the transducer is generally controlled between 40mm and 60mm in order to reduce the transverse vibration of the transducer, and the volume of the piezoelectric ceramic in the ultrasonic transducer is also limited. For example, an ultrasonic transducer with a diameter of 50mm at 20kHz, the maximum design power is 3000W. The power of the ultrasonic driving power supply is related to the power and the number of power tubes, IGBTs, and the like in the power supply, and generally, the design power of the ultrasonic driving power supply is based on the power of the driven ultrasonic transducer.
Along with the development of society, higher requirements are continuously put on the power of ultrasonic equipment in the market, such as lithium battery welding, wire harness welding and the like, and the power of an ultrasonic assembly is generally required to be more than 5000W. Two schemes are currently used in the market to increase the power of an ultrasonic device assembly.
1. Further increase the volume of the transducer, such as increasing the diameter of the transducer, but at the same time, the problems of increased internal consumption, increased heating value, reduced efficiency and the like of the transducer are caused
2. The volume of the amplitude transformer is increased, and two ultrasonic transducers are installed on the input end face of the amplitude transformer and driven to work simultaneously. It is generally known that ultrasonic transducers are the most vulnerable components of equipment, the use of two transducers doubles the failure rate of the equipment, and the failure of either transducer results in the failure of the ultrasonic equipment.
In the two modes, a high-power ultrasonic driving power supply is required for driving, if a power tube is added in the driving power supply, the stability of the power supply can be reduced, and if one power tube is burnt out, the whole power supply cannot work. If IGBT driving is used, high power IGBTs can greatly increase equipment costs.
Disclosure of Invention
The utility model provides a multi-transducer parallel ultrasonic assembly with longitudinal-radial coupled vibration for overcoming the defects of the prior art.
In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a longitudinal path coupling vibration's multi-transducer parallel ultrasonic assembly, includes longitudinal path coupling converter, transducer assembly screw has all been seted up to longitudinal path coupling converter side central point put, transducer assembly screw department installs the transducer, and transducer assembly screw is central symmetry with longitudinal path coupling converter center and distributes, set up the luffing rod assembly screw on one terminal surface of longitudinal path coupling converter, install the luffing rod on the luffing rod assembly screw, install the instrument head on the luffing rod, every transducer matches a set of power amplification circuit, and both are connected with power cable, and every power amplification circuit connects in parallel to signal control circuit through the signal line on, carries out vibration control and frequency tracking to all transducers by signal control circuit.
Alternatively, the longitudinal coupling converter may be designed in a disc shape or in a polygonal shape. The number of the polygon edges is not limited to six or eight, and can be increased or decreased according to actual use.
Alternatively, the power amplification circuit may be matched to two or more transducers simultaneously, in addition to being matched to one transducer individually at the same time.
Alternatively, the side surface of the longitudinal coupling converter can be directly connected with the outside of the transducer, or can be connected with an amplitude transformer, and the amplitude transformer is connected with the transducer.
To sum up, compared with the prior art, the beneficial effect of this scheme is:
(1) Through the principle of reciprocity of vibration or sound, a longitudinal-radial coupling converter is designed, so that a plurality of transducers are driven to vibrate in the radial direction, and the converter converts radial vibration into longitudinal (axial) vibration;
(2) Through the application of the longitudinal-diameter coupling converter, a plurality of low-power energy converters can be connected in parallel on the circumference of the converter, so that the power of the whole ultrasonic assembly is improved, the power of the whole ultrasonic assembly is equal to the superposition of all the low-power energy converters, if the power of each energy converter is 1000w, 6 energy converters are arranged on the circumference of the converter in total, and the rated power of the ultrasonic assembly is 6000w;
(3) The control circuit in the ultrasonic driving power supply is separated from the power amplifying circuit, and meanwhile the power amplifying circuit is decomposed into a plurality of small power amplifying circuits, and each power amplifying circuit only drives one transducer to work. Meanwhile, according to the consistency of the frequency, the impedance and the phase of the transducer, each amplifying circuit and the transducer driven by the amplifying circuit can be controlled by using the same control circuit, and the design mode of the amplifying circuit is consistent with that of the control circuit of the existing ultrasonic driving power supply;
(4) By adopting a structure that a plurality of transducers are connected in parallel, when one transducer fails, the other transducers can still work normally, and the converter can still be driven effectively to work. By the design, the power redundancy design can be performed on the ultrasonic assembly. For example, the required power of an ultrasonic system is 4000W, 5 transducers of 1000W can be installed on the converter at the same time, so that redundancy is designed to be 1000W, and when the ultrasonic system works normally, 5 transducers work at 800W, and when one transducer is damaged, the other 4 transducers can still work at 1000W rated power, so that the whole system can work normally.
Drawings
FIG. 1 is a schematic illustration of tangential deformation and radial deformation;
FIG. 2 is a schematic illustration of axial deformation and radial deformation;
FIG. 3 is a top view of an ultrasonic assembly according to the present patent;
FIG. 4 is a front view of the vibrating portion of the ultrasonic assembly of the present patent;
fig. 5 is a front view of a longitudinal-coupling transducer according to the present patent.
1. A transducer; 2. a longitudinal-radial coupling converter; 21. the transducer is provided with a screw hole; 22. the amplitude transformer is provided with a screw hole; 3. a horn; 4. a tool head; 5. a power amplifying circuit; 51. a power cable; 6. a signal control circuit; 61. and a signal line.
Detailed Description
In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.
According to the multi-transducer parallel ultrasonic assembly of longitudinal coupling vibration, according to the method disclosed in fig. 5, a longitudinal coupling transducer 2 is designed and manufactured, the lateral surface of the longitudinal coupling transducer 2 is designed into a polygon shape for facilitating actual installation, the lateral surface is shown in fig. 5 to be of a hexagonal structure, a transducer assembling screw hole 21 is processed in the center of each surface of the lateral surface, meanwhile, an amplitude transformer assembling screw hole 22 is processed in one end surface of the longitudinal coupling transducer, and two end surfaces of the longitudinal coupling transducer 2 can be processed into a truncated cone shape or a prismatic table shape, so that vibration energy can be conveniently concentrated. After the completion of the processing of the longitudinal coupler transducer 2, as shown in fig. 4, the transducer 1 is mounted on the side surface of the longitudinal coupler transducer 2, and the horn 3 and the tool bit 4 are sequentially mounted on the end surface of the longitudinal coupler transducer 2, and the mounting method is the same as that of a general welding type ultrasonic device.
After the steps are installed, each transducer 1 is matched with a set of power amplifying circuit 5, the power amplifying circuit 1 and the power amplifying circuit are connected through a power cable 51, and the power amplifying circuit 5 only needs to be matched with the corresponding transducer 1, so that all transducers do not need to be matched at the same time. Each set of power amplifying circuits 5 is connected in parallel to the signal control circuit 6 through a signal line 61, and vibration control and frequency tracking are performed on all transducers 1 by the signal control circuit 6. All transducers 1 are connected to the same longitudinal coupling transducer 2 and then to the same amplitude transformer 3 and tool head 4, and all input signals and feedback signals are in the same phase, so that the signal control circuit 6 can be regarded as the input and feedback of the same ultrasonic transducer, and the control mode of the signal control circuit 6 can be consistent with that of a standard welding ultrasonic driving power supply.
The longitudinal-radial coupling converter 2 may be designed in a disc shape or in a polygonal shape. The number of the polygon edges is not limited to six or eight, the number of the polygon edges can be increased or decreased according to actual use, the power amplification circuit 5 can be simultaneously matched with one transducer 1 independently, the power amplification circuit 5 can be simultaneously matched with two or more transducers 1, the side face of the longitudinal-radial coupling converter 2 can be directly connected with the transducer 1, the amplitude transformer 3 can also be connected, and the amplitude transformer 3 is connected with the transducer 1.
An ultrasonic longitudinal-radial coupled transducer 2 for converting radial vibration into longitudinal vibration, which can be designed by finite element analysis software, and whose disk diameter is as shown in Table 1 according to design experience
| Frequency band | Diameter range |
| 15kHz | 230mm-250mm |
| 20kHz | 170mm-190mm |
| 28kHz | 120mm-140mm |
| 35kHz | 90mm-110mm |
| 40kHz | 80mm-100mm |
| 60kHz | 50mm-70mm |
TABLE 1
In a specific design, the thickness of the disc-type transducer is typically 0.15-0.25 times the diameter, which can be adjusted by finite element design software according to the actual requirements and the mounting mode of the transducer 1. The two end faces of the disc-type transducer can be designed into a truncated cone shape, which is more beneficial to reducing the problem of stress concentration of vibration. On the side of the disk, a plurality of planes are machined, the size of which is substantially identical to the size of the end face of the transducer 1, and transducer mounting screw holes 21 are machined in the direction perpendicular to the planes, and the transducer mounting screw holes 21 are used for connecting and fixing the plurality of transducers 1.
An amplitude transformer assembly screw hole 22 is formed in one end face of the disc type transducer, the amplitude transformer assembly screw hole 22 is connected with the amplitude transformer 3, the amplitude transformer 3 is perpendicular to the end face of the disc type transducer, and after installation is completed, a tool head 4 is installed on one end face of the amplitude transformer 3. The vibration part of the ultrasonic assembly is mounted up to this point.
For each transducer 1, a set of power amplifying circuits 5 are independently matched, and the power amplifying circuits 5 are simultaneously connected with a set of ultrasonic signal control circuits 6 to realize the driving of each transducer 1.
The structure connects a plurality of low-power transducers 1 in parallel, thereby realizing the multiple increase of power, and simultaneously, as the power amplifying circuit of each transducer 1 works independently, a high-power amplifying element is not needed, and the cost can be effectively controlled.
Description of the inventive principles:
it is generally known that the vibration of an ultrasonic device, essentially a deformation vibration, causes radial deformation when the elastic body is compressed or stretched axially, due to tangential deformation, for any vibration of an elastic body having a certain volume, as shown in fig. 1
When an object is axially compressed, the object is radially deformed by tension due to the shear force, whereas when the object is axially stretched, the object is radially deformed by compression.
It is generally known that in an object, the sound field or vibration field has reciprocity, i.e. axial vibration causes radial vibration, which also causes axial vibration.
In this patent, the reciprocity of the vibration is used, and the transducer 1 is used for excitation in the radial direction, so that axial vibration is generated, as shown in fig. 2
Fig. 2 shows a basic principle structure of a disc-type longitudinal-radial coupling transducer 2, wherein the side surface of the disc is a vibration input surface, vibration excitation is performed by a plurality of transducers 1 on the circumference, the end surface of the disc is a vibration output surface, axial vibration is generated, the axial vibration is input to an amplitude transformer 3 and a tool head 4, and finally ultrasonic vibration is applied to a workpiece.
The disk-type longitudinal-radial coupling transducer 2 is in phase in radial vibration by taking the center of the disk as a reference point, so that the transducers 1 fixed on the side surface of the disk vibrate in phase, and all the transducers 1 are simultaneously connected to one transducer, and the loads of all the transducers 1 on the disk are uniform, namely the impedance and the frequency of the transducers 1 are uniform.
For an ultrasonic drive power supply, if the impedance, frequency, and vibration phase of the transducer 1 are all uniform, it can be driven using the same signal. A set of control circuits can be used to control multiple sets of power amplifying circuits 5 in parallel, so as to drive multiple transducers 1 to work simultaneously.
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.
While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as expressed herein, either as a result of the foregoing teachings or as a result of the knowledge or technology of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (4)
1. The utility model provides a many transducers of longitudinal coupling vibration parallel ultrasonic assembly, its characterized in that includes longitudinal coupling converter (2), transducer assembly screw (21) have all been seted up to longitudinal coupling converter (2) side central point put, transducer assembly screw (21) department installs transducer (1), and transducer assembly screw (21) are central symmetry with longitudinal coupling converter (2) center and distribute, set up on one terminal surface of longitudinal coupling converter (2) and become width of cloth pole assembly screw (22), become width of cloth pole assembly screw (22) and install width of cloth pole (3), install instrument head (4) on become width of cloth pole (3), every transducer (1) match one set of power amplifier circuit (5), connect with power cable (51) therebetween, and every power amplifier circuit (5) are parallelly connected to signal control circuit (6) through signal line (61), are carried out vibration control and frequency tracking to all transducers (1) by signal control circuit (6).
2. The multi-transducer parallel ultrasonic assembly of longitudinal coupling vibration according to claim 1, wherein the longitudinal coupling transducer (2) can be designed into a disc shape or a polygon shape, and the number of the polygon edges is not limited to six or eight and can be increased or decreased according to practical use.
3. A multi-transducer parallel ultrasound assembly for longitudinal coupled vibration according to claim 1, wherein the power amplifying circuit (5) can be matched with two or more transducers (1) simultaneously, in addition to one transducer (1) at a time.
4. The multi-transducer parallel ultrasonic assembly of longitudinal coupling vibration according to claim 1, wherein the side surface of the longitudinal coupling transducer (2) can be directly connected with the outside of the transducer (1) or can be connected with the amplitude transformer (3), and the amplitude transformer (3) is connected with the transducer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321223706.5U CN219745432U (en) | 2023-05-19 | 2023-05-19 | Longitudinal-radial coupled vibration multi-transducer parallel ultrasonic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321223706.5U CN219745432U (en) | 2023-05-19 | 2023-05-19 | Longitudinal-radial coupled vibration multi-transducer parallel ultrasonic assembly |
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| Publication Number | Publication Date |
|---|---|
| CN219745432U true CN219745432U (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321223706.5U Active CN219745432U (en) | 2023-05-19 | 2023-05-19 | Longitudinal-radial coupled vibration multi-transducer parallel ultrasonic assembly |
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| Country | Link |
|---|---|
| CN (1) | CN219745432U (en) |
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- 2023-05-19 CN CN202321223706.5U patent/CN219745432U/en active Active
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