Ultrasonic welding machine for pipe welding

Abstract

The utility model relates to the field of welding machines, in particular to an ultrasonic welding machine for pipe welding. An ultrasonic welding head is arranged in the middle of the rod body; the supporting assemblies are arranged on the rod body and located on the two sides of the ultrasonic welding head; the supporting assembly comprises an elastic support, one end of the elastic support is fixedly connected to the rod body, the other end of the elastic support is fixedly connected with a sliding part, the sliding part can slide on the rod body, and the elastic support comprises a plurality of melon-rind-shaped reeds which are evenly distributed on the circumference. The adjusting pipes are arranged at the two ends of the rod body and are in threaded connection with the rod body, and one ends of the adjusting pipes abut against the sliding parts; the adjusting pipe is rotated, the elastic support is compressed towards the ultrasonic welding head, the elastic support is expanded to abut against the inner wall of the pipe, the pipe is fixed, the concentricity of the pipe can be guaranteed, and a welded junction can be aligned more conveniently.

Description

Technical Field

[0001] The utility model relates to a welding machine field, in particular to an ultrasonic welding machine for pipe welding. Background Art

[0002] An ultrasonic welding machine is a device that uses high-frequency ultrasonic waves to weld materials. Its main components include:

[0003] Transducer: Converts electrical energy into ultrasonic vibrations.

[0004] Welding head (ultrasonic welding head): Transfers ultrasonic vibrations to the materials to be welded.

[0005] Generator: Generates and adjusts the frequency and power of ultrasonic waves.

[0006] Pressure system: Provides appropriate pressure to ensure the contact and combination of welding points.

[0007] During operation, the ultrasonic welding machine generates high-frequency vibrations on the welding surface through the ultrasonic waves generated by the transducer, generates local heat, melts the materials and combines them under pressure to complete the welding. It is widely used in plastic welding, metal welding and the connection of precision components.

[0008] When welding tubular structures, it is not easy to align the tubular structures.

[0009] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. Summary of the Utility Model

[0010] The purpose of the utility model is to provide a technical effect of more accurate alignment of pipes for the above existing technical problems.

[0011] In view of this, the utility model provides an ultrasonic welding machine for pipe welding, which is characterized by including:

[0012] A rod body, with an ultrasonic welding head provided in the middle of the rod body;

[0013] A support assembly, which is arranged on the rod body and on both sides of the ultrasonic welding head;

[0014] The support assembly includes:

[0015] An elastic support, one end of the elastic support is fixedly connected to the rod body, and the other end is fixedly connected with a sliding part, and the sliding part can slide on the rod body. The elastic support includes a plurality of melon-shaped spring pieces evenly distributed in a circle;

[0016] Adjusting tubes are arranged at both ends of the rod body and are threadedly connected to the rod body, and one end of the adjusting tube abuts against the sliding part.

[0017] Furthermore, the ultrasonic welding head is made of titanium alloy. The ultrasonic welding head body includes an integrally formed connecting part and a welding part, and a layer of Teflon coating is provided on the outer surface of the welding part.

[0018] Furthermore, it further includes:

[0019] A stable contact surface, which is fixedly arranged outside the melon - shaped reed, and the outer side surfaces of all the stable contact surfaces are curved surfaces with the same curvature.

[0020] Furthermore, one end of the adjusting tube is provided with a hexagonal part.

[0021] Furthermore, the ultrasonic welding heads are arranged in a circumferential uniform distribution.

[0022] Furthermore, the stable contact surface is made of a soft material, such as rubber.

[0023] The beneficial effects of the present utility model are:

[0024] 1. By rotating the adjusting tube and compressing the elastic support towards the ultrasonic welding head, the elastic support expands and supports against the inner wall of the tube, realizing the fixation of the tube, which can ensure the concentricity of the tube and is more convenient for aligning the weld joint.

[0025] 2. By setting the stable contact surface, the elastic melon - shaped reed fits more closely with the inner wall of the tube, and it can ensure that the axis directions of the tube and the rod body are the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three - dimensional structural schematic diagram of the present utility model;

[0027] Figure 2 is Figure 1 the structural schematic diagram of area A in

[0028] Figure 3 is Figure 1 the structural schematic diagram of area B in

[0029] The markings in the figure are represented as:

[0030] 1, rod body; 2, ultrasonic welding head; 3, elastic support; 5, sliding part; 6, melon - shaped reed; 7, adjusting tube; 8, stable contact surface; 9, hexagonal part. SPECIFIC EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0032] Example 1:

[0033] This embodiment provides an ultrasonic welding machine for pipe welding, which is characterized by comprising:

[0034] A rod body 1, with an ultrasonic welding head 2 provided in the middle of the rod body 1;

[0035] A support assembly, which is arranged on the rod body 1 and on both sides of the ultrasonic welding head 2;

[0036] The support assembly includes:

[0037] An elastic support 3, one end of the elastic support 3 is fixedly connected to the rod body 1, and the other end is fixedly connected with a sliding part 5, and the sliding part 5 can slide on the rod body 1. The elastic support 3 includes a plurality of melon-shaped reed pieces 6 evenly distributed in a circumferential direction;

[0038] An adjusting tube 7, which is arranged at both ends of the rod body 1 and is threadedly connected to the rod body 1, and one end of the adjusting tube 7 abuts against the sliding part 5.

[0039] The rod body 1 is a rod-shaped structure made of a hard material, and a cavity for arranging wires is provided inside the rod body 1 to supply power to the ultrasonic welding head 2. The ultrasonic welding head 2 is a prior art. The ultrasonic welding head 2 uses high-frequency ultrasonic vibration to realize the welding of materials. Its working principle is as follows:

[0040] Ultrasonic generation: The transducer built in the ultrasonic welding head 2 converts electrical energy into high-frequency ultrasonic waves (usually 20 kHz to 70 kHz).

[0041] Sound energy transmission: Through the extension part of the welding head, the ultrasonic waves are transmitted to the welding surface. These sound waves generate high-frequency vibration on the material surface.

[0042] Contact point heating: Vibration causes frictional heat to be generated at the material contact points, raising the temperature of the contact points, thereby softening or melting the material surface.

[0043] Welding formation: Under the action of pressure, the melted material flows and combines, and a solid welding joint is formed after cooling.

[0044] The support assembly is arranged on the rod body 1 and on both sides of the ultrasonic welding head 2 for fixing two steel pipes. The support assembly includes an elastic support 3. One end of the elastic support 3 is fixedly connected to the rod body 1, and the other end is fixedly connected with a sliding part 5. The sliding part 5 can slide on the rod body 1. The elastic support 3 includes a plurality of melon-shaped reed pieces 6 evenly distributed in a circumferential direction;

[0045] An adjusting tube 7, which is arranged at both ends of the rod body 1 and is threadedly connected to the rod body 1, and one end of the adjusting tube 7 abuts against the sliding part 5.

[0046] By rotating the adjustment tube 7, the elastic support 3 is compressed toward the ultrasonic welding head 2, so that the elastic support 3 expands and contacts the inner wall of the pipe, thereby fixing the pipe, ensuring the concentricity of the pipe and aligning the weld more conveniently.

[0047] Embodiment 2:

[0048] This embodiment provides an ultrasonic welding machine for pipe welding, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] The ultrasonic horn 2 is made of titanium alloy. The main body of the ultrasonic horn 2 includes an integrally formed connecting portion and a welding portion. A layer of Teflon coating is provided on the outer surface of the welding portion.

[0050] In the above technical solution, the ultrasonic welding head 2 is made of TC4 titanium alloy as a whole. Titanium alloy has the advantages of wear resistance and rust resistance, and has better tensile, crack and shock resistance than steel and aluminum. Moreover, the welding head made of titanium alloy has lower noise, stable welding frequency, less frequency drop, wide frequency band and better welding performance. In addition, a Teflon coating is provided on the surface of the welding part of the ultrasonic welding head 2 body to ensure the hardness and heat dissipation effect of the titanium alloy, so that the titanium alloy welding head has both the hardness of steel and the heat resistance of aluminum alloy, and the service life is improved.

[0051] Specifically, the surface of the welding part is subjected to anodizing surface treatment; and the Teflon coating is sprayed on the outer surface of the entire welding part.

[0052] When spraying Teflon coating, the surface of the welding part can be oxidized to improve the mechanical properties of the metal surface.

[0053] Also includes:

[0054] The stable contact surface 8 is fixedly arranged on the outside of the melon-shaped spring piece 6, and the outer side surface of each stable contact surface 8 is a curved surface with the same curvature.

[0055] By providing the stable abutment surface 8, the elastic melon-shaped spring piece 6 can be more closely fitted to the inner wall of the tube, and the axial directions of the tube and the rod body 1 can be ensured to be consistent.

[0056] Embodiment 3:

[0057] This embodiment provides an ultrasonic welding machine for pipe welding, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] A hexagonal portion 9 is provided at one end of the adjustment tube 7 .

[0059] The hexagonal portion 9 is provided to facilitate the use of a tool to rotate the adjustment tube 7 .

[0060] The ultrasonic welding heads 2 are arranged in a circumferential uniform distribution.

[0061] The heating is more uniform.

[0062] The stable contact surface 8 is made of a soft material, such as rubber.

[0063] It can increase the contact area between the stable contact surface 8 and the pipe, and enhance the stability.

[0064] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the specific embodiments described above. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. An ultrasonic welding machine for tube welding, characterized in that, Comprising: A rod body (1), with an ultrasonic welding head (2) provided in the middle of the rod body (1); A support assembly, which is arranged on the rod body (1) and on both sides of the ultrasonic welding head (2); The support assembly includes: An elastic support (3), one end of the elastic support (3) is fixedly connected to the rod body (1), and the other end is fixedly connected with a sliding part (5), the sliding part (5) can slide on the rod body (1), and the elastic support (3) includes a plurality of melon peel-shaped reed pieces (6) evenly distributed in a circumferential manner; Adjusting tubes (7), which are arranged at both ends of the rod body (1) and are threadedly connected to the rod body (1), and one end of the adjusting tube (7) abuts against the sliding part (5).

2. The ultrasonic welding machine for pipe welding according to claim 1, wherein The ultrasonic welding head (2) is made of titanium alloy material, and the body of the ultrasonic welding head (2) includes an integrally formed connecting part and a welding part, and a layer of Teflon coating is provided on the outer surface of the welding part.

3. The ultrasonic welding machine for pipe welding according to claim 1, wherein It further includes: A stable contact surface (8), which is fixedly arranged on the outside of the melon peel-shaped reed piece (6), and the outer side surfaces of the respective stable contact surfaces (8) are curved surfaces with the same curvature.

4. The ultrasonic welding machine for pipe welding according to claim 1, characterized in that, One end of the adjusting tube (7) is provided with a hexagonal part (9).

5. The ultrasonic welding machine for pipe welding according to claim 1, characterized in that, The ultrasonic welding heads (2) are arranged evenly in a circumferential manner.

6. The ultrasonic welding machine for pipe welding according to claim 3, characterized in that, The stable contact surface (8) is made of a soft material, such as rubber.

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