An ultrasonic seam welding horn and ultrasonic assembly
Patent Information
- Application Number
- CN202522296336.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-10-30
AI Technical Summary
当同一焊接区域中存在多个焊印需要焊接时，通常通过单峰滚焊头依次一一进行焊接，焊接效率相对较低，并且当两个相邻的焊印距离较近时，通过单峰滚焊头对第二焊印进行焊接时，会破坏已经焊接完成的第一焊印，导致焊印失效；如采用设置两套设备对多个焊印进行焊接，则通常由于产线上空间不足，无法实现同时焊接
[0019]本实用新型提供一种超声波滚焊焊头，通过在声学杆上沿轴向方向依次布设至少两个振动盘，并在每一振动盘的端部分别设置焊接部，使得该滚焊焊头能够同时对多个焊印进行焊接，提高了焊接效率，保证了焊接质量，避免了因重复焊接同一区域的多个焊印而导致的焊印破坏问题。
Smart Images
Figure CN224808655U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ultrasonic welding technology, specifically relating to an ultrasonic roll welding head and ultrasonic components. Background Technology
[0002] Ultrasonic welding is a method that uses high-frequency ultrasonic vibrations to transmit to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects rub against each other, forming a fusion between molecular layers. As an energy-saving and environmentally friendly technology, ultrasonic welding has been widely used in welding processes for metals, plastics, and other materials.
[0003] In ultrasonic rolling welding, the welding head needs to roll continuously at high speed. The welding head is installed between two amplitude modulators, and the transducer and motor are installed on one of the amplitude modulators. Ultrasonic rolling welding requires high rigidity of the spindle system to minimize radial runout and avoid welding instability or incomplete welds. The inventors have found that existing ultrasonic rolling welding heads have at least the following technical problems in practical applications:
[0004] Existing roll welding heads typically use single-peak roll welding heads, suitable for welding single weld marks. When multiple weld marks need to be welded in the same welding area, they are usually welded one by one using a single-peak roll welding head, which results in relatively low welding efficiency. Furthermore, when two adjacent weld marks are close together, welding the second weld mark with a single-peak roll welding head can damage the already welded first weld mark, causing the weld mark to fail. If two sets of equipment are used to weld multiple weld marks, simultaneous welding is usually not possible due to insufficient space on the production line.
[0005] Therefore, it is necessary to improve upon the shortcomings of existing technologies in order to overcome their deficiencies in practical applications. Utility Model Content
[0006] Based on the aforementioned shortcomings and deficiencies in the prior art, one of the objectives of this utility model is to at least solve one or more of the aforementioned problems in the prior art. In other words, one of the objectives of this utility model is to provide an ultrasonic roll welding head and ultrasonic component that meet one or more of the aforementioned requirements.
[0007] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:
[0008] This utility model provides an ultrasonic roll welding head, including an acoustic rod, a vibrating plate, and a welding part. At least two vibrating plates are arranged sequentially along the axial direction of the acoustic rod, and each vibrating plate has a welding part at its end. The acoustic rod has a linear vibration mode at the resonant frequency, and each vibrating plate has a bending vibration mode or a linear vibration mode at the resonant frequency.
[0009] As a preferred embodiment, the vibratory feeder includes a first vibratory feeder and a second vibratory feeder, with the first vibratory feeder and the second vibratory feeder arranged at intervals.
[0010] As a preferred embodiment, the length of the acoustic rod is set to be twice or more than half the wavelength, and the acoustic rod is in full-wave vibration mode at the resonant frequency, with the vibration mode including at least two acoustic wave nodes.
[0011] As a preferred embodiment, the first vibrating plate and the second vibrating plate are located together between the two acoustic nodes of the acoustic rod; or the first vibrating plate and the second vibrating plate are located on the outside of the two acoustic nodes of the acoustic rod, respectively.
[0012] As a preferred embodiment, the vibration modes of the first vibratory plate and the second vibratory plate are arranged in a symmetrical bending and oscillating configuration or in a linear vibration configuration.
[0013] As a preferred embodiment, the length of the acoustic rod is set to an integer multiple of half the wavelength, and the acoustic rod is in a half-wave vibration mode at the resonant frequency, with at least one acoustic wave node in the vibration mode.
[0014] As a preferred embodiment, the vibration modes of the first vibratory plate and the second vibratory plate are configured to bend and oscillate in the same direction or to be linear vibration.
[0015] As a preferred embodiment, the welded portion is located at the antinode of the vibration mode of the vibratory disk.
[0016] As a preferred embodiment, the diameter of the vibratory feeder is set to 80–260 mm.
[0017] This utility model also provides an ultrasonic component, including a roll welding head as described in any of the above embodiments, wherein the acoustic rod is connected to an amplitude modulator, and the amplitude modulator is connected to a transducer.
[0018] Compared with the prior art, the advantages of this utility model are:
[0019] This utility model provides an ultrasonic roll welding head. By arranging at least two vibrating plates sequentially along the axial direction on the acoustic rod and setting a welding part at the end of each vibrating plate, the roll welding head can simultaneously weld multiple weld marks, thereby improving welding efficiency, ensuring welding quality, and avoiding the problem of weld mark damage caused by repeatedly welding multiple weld marks in the same area.
[0020] This invention provides an ultrasonic roll welding head, which enhances the rigidity of the overall structure and reduces radial runout during the welding process by configuring the acoustic rod, vibrating plate and welding part into an integral molded part, thus ensuring the stability and reliability of the welding quality. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of the full-wave roll welding head according to an embodiment of the present invention;
[0023] Figure 2 This is a cross-sectional view of the full-wave roll welding head according to an embodiment of the present utility model;
[0024] Figure 3 This is a cross-sectional view of a full-wave roll welding head according to another embodiment of the present invention;
[0025] Figure 4 This is a schematic diagram of the structure of the half-wave roll welding head according to an embodiment of the present invention;
[0026] Figure 5 This is a cross-sectional view of the half-wave roll welding head according to an embodiment of the present utility model;
[0027] Figure 6 This is a schematic diagram of the structure of the ultrasonic component according to an embodiment of the present invention;
[0028] Figure 7 This is a schematic diagram of the ultrasonic component structure according to another embodiment of the present invention;
[0029] In the figure: 1 Acoustic rod, 2 Vibrating plate, 21 First vibrating plate, 22 Second vibrating plate, 3 Welding part, 4 Amplitude modulator, 5 Transducer, S1 Full-wave vibration mode, S2 Half-wave vibration mode, S3 Bending vibration mode, P Acoustic node. Detailed Implementation
[0030] To more clearly illustrate the embodiments of this application, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0031] In the description of the embodiments of this application, the terms "upper," "lower," "front," "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," etc., are only used for distinction in description and have no special meaning.
[0032] According to some embodiments of this application, please refer to Figures 1 to 5 As shown, an ultrasonic roll welding head is provided, comprising an acoustic rod 1, a vibrating plate 2, and a welding part 3. At least two vibrating plates 2 are sequentially arranged along the axial direction of the acoustic rod 1, and each vibrating plate has a welding part 3 at its end. The acoustic rod 1 has a linear vibration mode at its resonant frequency, and each vibrating plate 2 has a bending vibration mode or a linear vibration mode at its resonant frequency. The acoustic rod 1, vibrating plate 2, and welding part 3 are configured as a single integral part, simplifying the structure of the welding head and improving its overall rigidity and durability.
[0033] In some embodiments of this application, the vibratory feeder 2 includes a first vibratory feeder 21 and a second vibratory feeder 22, with the first vibratory feeder 21 and the second vibratory feeder 22 arranged at intervals. The positions of the first vibratory feeder and the second vibratory feeder can be adjusted according to actual needs.
[0034] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the length of acoustic rod 1 is set to be twice or more than half the wavelength. Acoustic rod 1 is in full-wave vibration mode S1 at the resonant frequency. Full-wave vibration mode S1 includes at least two acoustic wave nodes P.
[0035] Specifically, the acoustic rod, as the core support structure of the entire roll welding head, plays a key role in the overall performance of the welding head by setting its length and vibration mode. When the length of the acoustic rod is set to twice or more than half the wavelength, the acoustic rod exhibits a full-wave vibration mode at the resonant frequency. The vibration mode contains at least two acoustic wave nodes P. The amplitude is the smallest at the position of the acoustic wave node P, and the amplitude is close to zero.
[0036] Furthermore, by setting the acoustic rod to a full-wave structure, the two ends of the acoustic rod can be supported, allowing the roll welding head to withstand greater pressure during welding while being less prone to deformation. This improves the welding pressure range and welding stability, and also enhances the structural rigidity of the roll welding head.
[0037] In some embodiments of this application, such as Figure 2As shown, the first vibrating plate 21 and the second vibrating plate 22 are located together between the two acoustic wave nodes P of the acoustic rod 1, which can meet the welding requirements of solder joints with small widths. Figure 3 As shown, the first vibrating plate 21 and the second vibrating plate 22 are located outside the two acoustic wave nodes P on the acoustic rod 1, respectively, which can meet the welding requirements of welds with a large width. When the first vibrating plate 21 and the second vibrating plate 22 are set away from the acoustic wave nodes P on the acoustic rod 1, the amplitude of the vibrating plate will increase. Different position settings can be used to weld welds of different widths of welding materials to meet the needs of different welding scenarios.
[0038] In some embodiments of this application, for the full-wave structure of the roll welding head, the vibration modes of the first vibrating plate 21 and the second vibrating plate 22 are either symmetrically bent and oscillated (S3) or linearly vibrating.
[0039] Specifically, the bending vibration modes on the first vibrating plate 21 and the second vibrating plate 22 are oscillating in opposite directions. At this time, the diameters of the two vibrating plates are relatively large, and the vibration modes of the vibrating plates have at least one acoustic node to meet the welding requirements of the two vibrating plates at the same time and ensure that the same welding effect is achieved.
[0040] Furthermore, the vibration modes on the first vibrating plate 21 and the second vibrating plate 22 can also be linear vibration modes. In this case, the diameters of the two vibrating plates are small, and there are no acoustic nodes on the vibration modes of the vibrating plates.
[0041] In some embodiments of this application, such as Figures 4 to 5 As shown, the length of acoustic rod 1 is set to an integer multiple of half the wavelength. Acoustic rod 1 is in half-wave vibration mode S2 at the resonant frequency. Half-wave vibration mode S2 includes at least one acoustic wave node P.
[0042] In some embodiments of this application, for the half-wave structure of the roll welding head, the vibration modes of the first vibrating plate 21 and the second vibrating plate 22 are set to bend and oscillate in the same direction or to be set to linear vibration.
[0043] Specifically, the bending vibration modes on the first vibrating plate 21 and the second vibrating plate 22 oscillate in the same direction. At this time, the diameters of the two vibrating plates are relatively large, and the vibration modes of the vibrating plates have at least one acoustic node to meet the welding requirements of the two vibrating plates at the same time and ensure that the same welding effect is achieved.
[0044] Furthermore, the vibration modes on the first vibrating plate 21 and the second vibrating plate 22 can also be linear vibration modes. In this case, the diameters of the two vibrating plates are small, and there are no acoustic nodes on the vibration modes of the vibrating plates.
[0045] In some embodiments of this application, the welding part 3 is located at the antinode of the vibration mode of the vibratory plate 2, which enables the welding part to obtain the maximum vibration energy, thereby improving the efficiency and quality of welding.
[0046] In some embodiments of this application, the diameter of the vibratory plate 2 is set to 80-260 mm, which can match the ultrasonic power of 20-50 kHz. The specific size range can be set according to actual needs. This size range has been obtained through a large number of experiments and tests, which can ensure that the vibratory plate has appropriate stiffness and strength during vibration. It will not cause vibration instability due to the diameter being too small, nor will it increase unnecessary weight and cost due to the diameter being too large.
[0047] In some embodiments of this application, by configuring the acoustic rod 1, the vibratory plate 2, and the welding part 3 as an integral molded part, the rigidity of the overall structure is enhanced, the radial runout during the welding process is reduced, and the stability and reliability of the welding quality are ensured.
[0048] In some embodiments of this application, the amplitude of the vibratory plate can be adjusted by reasonably setting parameters such as the length of the acoustic rod, the diameter of the vibratory plate, and the vibration mode. When welding the same material, the amplitudes of the two vibratory plates remain consistent; when welding dissimilar materials, the amplitudes of the two vibratory plates may differ. Amplitude adjustment can be achieved by adjusting the structural dimensions of the acoustic rod and the vibratory plate, enabling the roll welding head to adapt to the needs of different welding scenarios and thus having a wider range of application prospects.
[0049] According to some embodiments of this application, such as Figures 6 to 7 As shown, an ultrasonic component is also provided, including the roll welding head as described above, an acoustic rod 1 connected to an amplitude modulator 4 in the axial direction, and the amplitude modulator 4 connected to a transducer 5. Figure 6 The image shows an ultrasonic component including a full-wave roll welding head. Figure 7 The image shows an ultrasonic assembly including a half-wave roll welding head. The transducer efficiently converts electrical energy into mechanical vibration energy, which is then applied to the welding area via the roll welding head, achieving high-quality ultrasonic roll welding. In practical applications, this design offers advantages such as ease of operation, high welding efficiency, and good welding quality, making it widely applicable to various ultrasonic roll welding needs.
[0050] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0051] The above description is only a detailed explanation of the preferred embodiments and principles of this application. For those skilled in the art, there may be changes in the specific implementation based on the ideas provided by this utility model, and these changes should also be considered within the scope of protection of this application.
Claims
1. An ultrasonic roll welding head, characterized in that, It includes an acoustic rod, a vibrating plate, and a welding part. At least two vibrating plates are arranged sequentially along the axial direction of the acoustic rod, and each vibrating plate has a welding part at its end. The acoustic rod has a linear vibration mode at the resonant frequency, and each vibrating plate has a bending vibration mode or a linear vibration mode at the resonant frequency.
2. The ultrasonic roll welding head according to claim 1, characterized in that, The vibratory plate includes a first vibratory plate and a second vibratory plate, which are arranged at intervals.
3. The ultrasonic roll welding head according to claim 2, characterized in that, The length of the acoustic rod is set to be twice or more than half the wavelength, and the acoustic rod is in full-wave vibration mode at the resonant frequency, with at least two acoustic wave nodes in the vibration mode.
4. The ultrasonic roll welding head according to claim 3, characterized in that, The first vibrating plate and the second vibrating plate are located together between the two acoustic nodes of the acoustic rod; or the first vibrating plate and the second vibrating plate are located on the outside of the two acoustic nodes of the acoustic rod, respectively.
5. An ultrasonic roll welding head according to claim 3, characterized in that, The vibration modes of the first and second vibratory plates are either symmetrically bent and oscillating or linearly vibrating.
6. An ultrasonic roll welding head according to claim 2, characterized in that, The length of the acoustic rod is set to an integer multiple of half the wavelength, and the acoustic rod is in a half-wave vibration mode at the resonant frequency, with at least one acoustic wave node in the vibration mode.
7. An ultrasonic roll welding head according to claim 6, characterized in that, The vibration modes of the first and second vibratory plates are either unidirectional bending and oscillating or linear vibration.
8. An ultrasonic roll welding head according to claim 1, characterized in that, The welded part is located at the antinode of the vibration mode of the vibratory plate.
9. An ultrasonic roll welding head according to claim 1, characterized in that, The diameter of the vibratory feeder is set to 80–260 mm.
10. An ultrasonic component, characterized in that, Includes the roll welding head as described in any one of claims 1 to 9, wherein the acoustic rod is connected to an amplitude modulator, and the amplitude modulator is connected to a transducer.