Resonance rod for assisting in clamping ultrasonic welding head

Abstract

The utility model relates to the field of ultrasonic welding, in particular to a resonance rod used for assisting in clamping an ultrasonic welding head, the resonance rod comprises a main body and a connecting part which are fixedly connected, the main body and the connecting part are of a cylinder structure and are coaxially arranged, and the outer diameter of the main body is larger than that of the connecting part; the resonance rod can be connected with other equipment through the connecting part; a resonant cavity is arranged in the main body and is of a hollow structure. According to the resonant cavity structure, the axial length of the resonant rod can be greatly shortened under the condition that the resonant frequency of the resonant rod is kept unchanged, the axial length is 1 / 3-2 / 3 of the length of a conventional resonant rod, the welding space is greatly saved, meanwhile, the problem of clearance during welding is solved, and the safety of welding operation is improved.

Description

Technical Field

[0001] The present application relates to the field of ultrasonic welding, and in particular to a resonant rod for assisting in clamping an ultrasonic welding head. Background Art

[0002] With the popularization of welding technology, ultrasound has also been invented as a new welding method. Ultrasonic welding uses high-frequency vibration waves to transmit to the surfaces of two objects to be welded. Under pressure, the two surfaces of the objects rub against each other to form a fusion between the molecular layers. In some ultrasonic welding equipment structures, a resonant rod is often used to assist in clamping the ultrasonic welding head, so that the ultrasonic welding head can more efficiently receive the ultrasonic vibration from the vibration transmission horn. The resonant rod works in a resonant state, and the resonant frequency is equivalent to the vibration transmission horn, so the vibration loss is small and the welding efficiency is high.

[0003] However, at present, the resonant frequency of ordinary resonant rods and vibration transmission amplitude rods is comparable, and the axial size and length are also comparable. The longer axial shape sometimes gets in the way when welding some workpieces, affecting the control space, and even making it impossible to carry out welding due to the inability to avoid air. In addition, it is sometimes very close to the operator's body, making it easy to hit the operator, posing a safety hazard, thereby limiting the scope of welding applications. Utility Model Content

[0004] The purpose of the present application is to provide a resonant rod for assisting in clamping an ultrasonic horn.

[0005] The embodiments of the present application can be implemented through the following technical solutions:

[0006] A resonant rod for assisting in clamping an ultrasonic horn, comprising a main body and a connecting portion that are fixedly connected, the main body and the connecting portion being cylindrical structures and coaxially arranged, the outer diameter of the main body being greater than the outer diameter of the connecting portion, and the resonant rod can be connected to other devices through the connecting portion;

[0007] Furthermore, a resonant cavity is arranged inside the main body, and the resonant cavity is a hollow structure.

[0008] Furthermore, the resonant cavity is a hollow columnar structure and the cross section is any one of circular, rectangular and polygonal.

[0009] Furthermore, a vibration coupling surface is provided at an end of the main body close to the connecting portion, and the vibration coupling surface is a planar structure.

[0010] Furthermore, a first groove is coaxially arranged on the vibration coupling surface, the cross section of the first groove is circular and the outer diameter of the first groove is smaller than the outer diameter of the vibration coupling surface.

[0011] Furthermore, the connecting portion is a wire hole coaxially arranged with the resonance rod, the wire hole is a hollow cylindrical structure and is arranged inside the main body, and the inner wall of the wire hole is provided with a thread.

[0012] Furthermore, the connecting portion is a wire column coaxially arranged with the resonance rod, the wire column is a cylindrical structure, the wire column has a preset length in a direction away from the main body, and the outer wall of the wire column is provided with a thread.

[0013] Furthermore, one or more groups of spanner grooves are arranged on the outer periphery of the surface of the main body, and the spanner grooves (16) are flat notch structures or groove structures.

[0014] The resonant rod for assisting in clamping an ultrasonic horn provided in the embodiment of the present application has at least the following beneficial effects:

[0015] 1. The resonant cavity structure provided in the present application can significantly shorten the axial length of the resonant rod while keeping the resonant frequency unchanged. The axial length is 1 / 3-2 / 3 of the length of the conventional resonant rod, which greatly saves welding space, alleviates the problem of avoiding air during welding, and improves the safety of welding operation;

[0016] 2. The setting of the first groove in the present application reduces the effective area of ​​the vibration coupling surface, increases the prestress of the vibration coupling, and thus can improve the ultrasonic vibration coupling efficiency and reduce welding losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structure diagram of the first embodiment of the present application;

[0018] Figure 2 It is a cross-sectional view of Example 1 in this application;

[0019] Figure 3 This is a schematic diagram of the installation of Example 1 in the present application in an ultrasonic welding device;

[0020] Figure 4 This is the overall structure diagram of Example 2 in this application;

[0021] Figure 5 It is a cross-sectional view of Example 2 in this application;

[0022] Figure 6 This is a schematic diagram of the installation of Example 2 in the present application in an ultrasonic welding device;

[0023] Figure 7 This is the overall structure diagram of Example 3 in this application;

[0024] Figure 8 It is a cross-sectional view of Example 3 in this application;

[0025] Fig. 9 This is a schematic diagram of the installation of Example 3 in the present application in an ultrasonic welding device.

[0026] The numbers in the figure are: 1-resonance rod, 11-main body, 12-resonance cavity, 13-vibration coupling surface, 14-wire hole, 15-first groove, 16-wrench groove, 17-wire column, 2-ultrasonic welding head, 3-vibration transmission amplitude rod, 4-welding head resonance fixture, 5-ultrasonic transducer. DETAILED DESCRIPTION

[0027] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0028] In addition, various components on the drawings are enlarged (thickened) or reduced (thinned) for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0029] Words importing the singular also include the plural and vice versa.

[0030] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the products of the embodiments of the present application are usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, in order to distinguish different units, the words first, second, etc. are used in this specification, but these are not limited by the order of manufacture, nor can they be understood as indicating or implying relative importance, and their names may be different in the detailed description and claims of the present application.

[0031] The vocabulary in this specification is used to illustrate the embodiments of the present application, but is not intended to limit the present application. It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in this application can be specifically understood.

[0032] The present application provides a resonant rod for assisting in clamping an ultrasonic horn, which is used in Figure 3 In the ultrasonic welding device shown, Figure 1 and Figure 2As shown, it includes a fixedly connected main body 11 and a connecting part, the main body 11 and the connecting part are cylindrical structures and are coaxially arranged, the outer diameter of the main body 11 is larger than the outer diameter of the connecting part, and the connecting part is used to connect with other equipment in the ultrasonic welding device. Figure 3 , Figure 6 As shown, the ultrasonic welding device includes the resonance rod 1, the ultrasonic welding head 2, the vibration transmission and amplitude modulation rod 3, the welding head resonance clamp 4 and the ultrasonic transducer 5. Specifically, the resonance rod 1 is connected to the vibration transmission and amplitude modulation rod 3, and the welding head resonance clamp 4 and the ultrasonic welding head 2 are sandwiched between the resonance rod 1 and the vibration transmission and amplitude modulation rod 3. Through the joint action of the resonance rod 1, the vibration transmission and amplitude modulation rod 3 and the welding head resonance clamp, the ultrasonic wave emitted by the ultrasonic transducer 5 is transmitted to the ultrasonic welding head 2, and the ultrasonic welding head 2 can also be tightened at the same time.

[0033] Furthermore, a resonance cavity 12 is disposed inside the main body 11 , and the resonance cavity 12 is disposed at the middle portion of the resonance rod 1 and at the end away from the connection portion, and the resonance cavity 12 is a hollow structure.

[0034] In some preferred embodiments of the present application, the resonant cavity 12 is a hollow cylindrical structure and the cross section is any one of circular, rectangular, and polygonal;

[0035] In some preferred embodiments of the present application, the axial direction of the resonant cavity 12 is one or a combination of the radial direction and the axial direction of the main body 11 .

[0036] The setting of the resonance cavity 12 enables the main body 11 to be in a hollow state. At the same time, the resonance cavity 12 changes the vibration mode of the resonance rod 1, so that the axial length of the resonance rod 1 is shortened to 1 / 3-2 / 3 of that of a conventional resonance rod while keeping the resonance frequency unchanged, which can effectively save welding space, alleviate the problem of avoiding air during welding to a great extent, and improve the safety of welding operations.

[0037] Furthermore, the number of the resonant cavities 12 can be adjusted according to actual usage requirements.

[0038] Furthermore, a vibration coupling surface 13 is provided at an end of the main body 11 close to the connecting portion, and the vibration coupling surface 13 is a planar structure. Figure 3 It is a schematic diagram of the installation of the resonant rod in the ultrasonic welding device, as shown in Figure 3 As shown, the vibration coupling surface 13 abuts against the welding head resonance fixture for coupling ultrasonic vibration.

[0039] Furthermore, a first groove 15 is coaxially arranged on the vibration coupling surface 13, the cross-section of the first groove 15 is circular and the outer diameter of the first groove 15 is smaller than the outer diameter of the cross-section of the main body 11, and the setting of the first groove 15 reduces the effective action area of ​​the vibration coupling surface 13, which can further increase the coupling stress of the vibration coupling surface, thereby reducing the loss of ultrasonic vibration coupling.

[0040] In some preferred embodiments of the present application, the connecting portion is a wire hole 14, which is coaxially arranged with the resonance rod 1. At the same time, the wire hole 14 is a hollow cylindrical structure and is arranged inside the main body 11. The inner wall of the wire hole 14 is provided with a thread, and the connection with the vibration transmission and amplitude modulation rod 3 is achieved through the thread.

[0041] In some preferred embodiments of the present application, the connecting portion is a wire column 17, which is a cylindrical structure. The wire column 17 is coaxially arranged with the resonance rod 1. At the same time, the wire column 17 has a preset length in the direction away from the main body 11, and the outer wall of the wire column 17 is provided with a thread, and the connection with the vibration transmission and amplitude modulation rod 3 is achieved through the thread.

[0042] Furthermore, one or more groups of wrench grooves 16 are provided on the outer periphery of the surface of the main body 11, and the wrench grooves (16) are flat structures or groove structures. The wrench grooves 16 are used to fasten the resonance rod 1 to the ultrasonic welding device, and also facilitate the connection between the resonance rod 1 and the vibration transmission and amplitude modulation rod 3 and are easy to adjust and disassemble.

[0043] Embodiment 1

[0044] This embodiment provides a resonant rod for assisting in clamping an ultrasonic horn. Figure 1 and Figure 2 The overall structure diagram and cross-sectional diagram of the first embodiment are shown respectively. Figure 1 , Figure 2 As shown, it includes a main body 11 and a fixedly connected main body 11 and a connecting part, the main body 11 and the connecting part are cylindrical structures and are coaxially arranged, the outer diameter of the main body 11 is larger than the outer diameter of the connecting part, and the connecting part is used to connect with the vibration transmission and amplitude variation rod 3 in the ultrasonic welding device.

[0045] Furthermore, a resonant cavity 12 is disposed inside the main body 11, and the resonant cavity 12 is disposed at the middle part of the resonant rod and the end away from the connecting part, and the resonant cavity 12 is a hollow columnar structure and the cross section of the resonant cavity 12 is circular. At the same time, the axial length direction of the resonant cavity 12 is the same as the radial direction of the main body 11.

[0046] Specifically, the number of the resonant cavities 12 is two.

[0047] Furthermore, a vibration coupling surface 13 is provided at the end of the main body 11 close to the connecting portion, and the vibration coupling surface 13 is a planar structure.

[0048] Furthermore, a first groove 15 is coaxially disposed on the vibration coupling surface 13 , the cross section of the first groove 15 is circular, and the outer diameter of the first groove 15 is smaller than the outer diameter of the vibration coupling surface 13 .

[0049] Furthermore, the connecting portion is a wire hole 14, which is coaxially arranged with the resonance rod 1. At the same time, the wire hole 14 is a hollow cylindrical structure and is arranged inside the main body 11. The inner wall of the wire hole 14 is provided with a thread, and the connection with the vibration transmission and amplitude modulation rod 3 is achieved through the thread.

[0050] Furthermore, three groups of wrench grooves 16 are provided on the outer periphery of one end of the main body 11 away from the connecting portion, and the wrench grooves (16) are flat-end structures. The wrench grooves 16 are used to fasten the resonance rod 1 to the ultrasonic welding device, and also facilitate the connection between the resonance rod 1 and the vibration transmission and amplitude modulation rod 3 and are easy to adjust and disassemble.

[0051] Furthermore, if Figure 3 As shown, in the ultrasonic welding device, the resonance rod 1 and the vibration transmission and amplitude modulation rod 3 are threadedly connected through the thread hole 14, and the ultrasonic welding head 2 and the welding head resonance clamp 4 are located in the middle. The ultrasonic welding head 2 can be fastened by the cooperation of the resonance rod 1, the vibration transmission and amplitude modulation rod 3 and the welding head resonance clamp 4.

[0052] Embodiment 2

[0053] like Figure 4 , Figure 5 As shown, the overall structure of the resonant rod in this embodiment is similar to that in the first embodiment, except that the resonant cavity 12 is located in the middle part of the resonant rod, and the axial length direction of the resonant cavity 12 is the same as the axial direction of the main body 11. At the same time, the number of the resonant cavity 12 is one, and the number of the wrench grooves 16 is two groups. At the same time, the wrench groove 16 in this embodiment is a groove structure arranged on the outer surface of the main body 11 and having a certain depth. When in use, the wrench is inserted into the wrench groove 16 for position adjustment.

[0054] Embodiment 3

[0055] like Figure 7 , Figure 8As shown, the overall structure of the resonant rod in this embodiment is similar to that in the first embodiment, except that the resonant cavity 12 is located in the middle part of the resonant rod and there are two resonant rods 12, and the axial length directions of the two resonant cavities 12 are respectively the same as the radial direction and the axial direction of the main body 11, and the two resonant cavities 12 are interconnected.

[0056] Further, the connecting portion is a threaded rod 17, which is coaxially arranged with the resonant rod 1. At the same time, the threaded rod 17 has a preset length in the direction away from the main body 11, and the outer wall of the threaded rod 17 is provided with a thread, through which the connection with the vibration transmission horn 3 is achieved. The preset length matches the length of the structure in the vibration transmission horn 3 that is matched with it.

[0057] Furthermore, the number of the wrench slots 16 is one group.

[0058] like Fig. 9 As shown, in the ultrasonic welding device, the resonance rod 1 and the vibration transmission and amplitude modulation rod 3 are threadedly connected through a screw 17 and a groove structure, and the ultrasonic welding head 2 is located between the two. The ultrasonic welding head 2 can be fastened by the cooperation between the resonance rod 1 and the vibration transmission and amplitude modulation rod 3.

[0059] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications may be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A resonant rod for assisting in clamping an ultrasonic horn, characterized in that: It comprises a main body (11) and a connecting part which are fixedly connected, the main body (11) and the connecting part are cylindrical structures and are coaxially arranged, the outer diameter of the main body (11) is greater than the outer diameter of the connecting part, and the connection between the resonant rod and the vibration transmission amplitude rod can be realized through the connecting part; A resonant cavity (12) is arranged inside the main body (11), and the resonant cavity (12) is a hollow structure.

2. The resonant rod for auxiliary clamping of an ultrasonic horn according to claim 1, characterized in that: The resonant cavity (12) is a hollow columnar structure and has a cross section that is any one of circular, rectangular, and polygonal.

3. The resonant rod for auxiliary clamping of an ultrasonic horn according to claim 2, characterized in that: The axial length direction of the resonant cavity (12) is one or a combination of the radial direction or the axial direction of the main body (11).

4. The resonant rod for auxiliary clamping of an ultrasonic horn according to claim 1, characterized in that: The main body (11) is provided with a vibration coupling surface (13) at an end portion close to the connecting portion, and the vibration coupling surface (13) is a planar structure.

5. The resonant rod for auxiliary clamping of an ultrasonic horn according to claim 4, characterized in that: A first groove (15) is coaxially arranged on the vibration coupling surface (13), the cross section of the first groove (15) is circular and the outer diameter of the first groove (15) is smaller than the outer diameter of the vibration coupling surface (13).

6. The resonant rod for auxiliary clamping of an ultrasonic horn according to claim 1, characterized in that: The connecting portion is a thread hole (14) coaxially arranged with the resonance rod; the thread hole (14) is a hollow cylindrical structure and is arranged inside the main body (11); and the inner wall of the thread hole (14) is provided with a thread.

7. The resonant rod for auxiliary clamping of an ultrasonic horn according to claim 1, characterized in that: The connecting portion is a threaded column (17) coaxially arranged with the resonant rod, the threaded column (17) is a cylindrical structure, the threaded column (17) has a preset length in a direction away from the main body (11), and the outer wall of the threaded column (17) is provided with threads.

8. The resonant rod for auxiliary clamping of an ultrasonic horn according to claim 1, characterized in that: One or more groups of spanner grooves (16) are arranged on the outer periphery of the surface of the main body (11), and the spanner grooves (16) are of a flat structure or a groove structure.

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