Ultrasonic welding gun with anti-loosening structure

Abstract

The ultrasonic welding gun with the anti-loosening structure comprises an amplitude transformer and a welding head, the welding head is located at the lower end of the amplitude transformer, a threaded hole is formed in the outer surface of the lower end of the amplitude transformer, and an anti-loosening threaded connection assembly is fixedly installed in the middle of the outer surface of the upper end of the welding head. And the anti-loosening threaded connection assembly comprises a screw rod, a conical ring body, a circular truncated cone block, a mounting groove, a steel ball, a mounting cavity, a sliding hole, a compression spring, a limiting block and a movable rod, the screw rod is fixedly mounted in the middle of the outer surface of the upper end of the welding head, and the outer wall of the screw rod is in threaded connection with a threaded hole in the lower end of the amplitude transformer. According to the ultrasonic welding gun with the anti-loosening structure, the anti-loosening threaded connecting assembly is arranged, the axial tension between the connecting screw rod and the amplitude transformer is enhanced by releasing counter-acting force through the compression spring, and therefore friction force is increased, resistance moment is generated, and loosening is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial welding equipment, in particular to an ultrasonic soldering gun with an anti-loosening structure. Background Technique

[0002] An ultrasonic soldering gun is a device that uses ultrasonic technology for plastic welding. The role of the ultrasonic welding head in an ultrasonic welding machine is to transmit ultrasonic vibration energy to the workpiece to achieve material welding.

[0003] The connection between the traditional welding head and the amplitude transformer is a simple threaded connection structure. During welding, the welding head contacts and presses the workpiece. After long-term use, this simple threaded structure is very easy to loosen. In the light case, it will cause the ultrasonic component to shake, thereby reducing the welding precision.

[0004] Therefore, we propose an ultrasonic soldering gun with an anti-loosening structure. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides an ultrasonic soldering gun with an anti-loosening structure, which has the advantages of anti-loosening and stable installation, and can effectively solve the problems in the background technique.

[0007] (II) Technical Solutions

[0008] To achieve the above purpose, the technical solution adopted by the utility model is: an ultrasonic soldering gun with an anti-loosening structure, including an amplitude transformer and a welding head. The welding head is located at the lower end of the amplitude transformer. A threaded hole is opened on the outer surface of the lower end of the amplitude transformer. In the middle of the outer surface of the upper end of the welding head, an anti-loosening threaded connection component is fixedly installed. The anti-loosening threaded connection component includes a screw, a conical ring body, a frustum block, an installation groove, steel balls, an installation cavity, a sliding hole, a compression spring, a limiting block and a movable rod. The screw is fixedly installed in the middle of the outer surface of the upper end of the welding head, and the outer wall of the screw is threadedly connected with the threaded hole at the lower end of the amplitude transformer.

[0009] Preferably, the conical ring body is fixedly installed on the outer surface of the upper end of the screw, which plays a guiding role during installation and reduces the assembly time.

[0010] Preferably, the sliding hole is opened in the middle of the outer surface of the upper end of the screw, the installation cavity is opened inside the screw, and the lower end of the sliding hole communicates with the installation cavity.

[0011] Preferably, the compression spring and the limit block are both located in the installation cavity. The lower outer surface of the compression spring is fixedly connected to the bottom of the installation cavity, the upper outer surface of the compression spring is fixedly connected to the lower outer surface of the limit block, and the movable rod is fixedly installed in the middle of the upper outer surface of the limit block.

[0012] Preferably, the frustum-shaped block is fixedly installed on the upper outer surface of the movable rod. The installation groove is opened in the middle of the upper outer surface of the frustum-shaped block, and the steel ball is rotatably installed in the installation groove.

[0013] Preferably, the outer wall of the movable rod is slidably connected to the inner walls of the sliding hole and the conical ring body. The outer wall of the limit block is slidably connected to the installation cavity. The lower outer surface of the limit block is elastically connected to the bottom of the installation cavity through a compression spring. The outer wall of the frustum-shaped block is slidably connected to the inner wall of the conical ring body.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present utility model provides an ultrasonic soldering gun with an anti-loosening structure, which has the following beneficial effects:

[0016] 1. For the ultrasonic soldering gun with an anti-loosening structure, the provided anti-loosening threaded connection assembly releases a reaction force through the compression spring to enhance the axial tension between the connecting screw and the horn, thereby increasing the friction force, generating a resistance moment, and further preventing loosening.

[0017] 2. For the ultrasonic soldering gun with an anti-loosening structure, through the provided conical ring body, it is convenient for the screw to be easily inserted into the threaded hole at the bottom of the horn during threaded connection, facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an ultrasonic soldering gun with an anti-loosening structure according to the present utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the horn and the anti-loosening threaded connection assembly in an ultrasonic soldering gun with an anti-loosening structure according to the present utility model.

[0020] Figure 3 It is a schematic diagram of the structure of the anti-loosening threaded connection assembly in an ultrasonic soldering gun with an anti-loosening structure according to the present utility model.

[0021] Figure 4 It is a side cross-sectional view of the anti-loosening threaded connection assembly in an ultrasonic soldering gun with an anti-loosening structure according to the present utility model.

[0022] In the figure: 1. Amplitude changer; 2. Welding head; 3. Anti-loosening threaded connection assembly; 4. Screw; 5. Conical ring body; 6. Frustum block; 7. Installation groove; 8. Steel ball; 9. Installation cavity; 10. Slide hole; 11. Compression spring; 12. Limit block; 13. Movable rod. Specific implementation mode

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0024] This embodiment is an ultrasonic soldering gun with an anti-loosening structure.

[0025] As Figures 1-4 shown, it includes an amplitude changer 1 and a welding head 2. The welding head 2 is located at the lower end of the amplitude changer 1. A threaded hole is opened on the outer surface of the lower end of the amplitude changer 1. The middle part of the outer surface of the upper end of the welding head 2 is fixedly installed with an anti-loosening threaded connection assembly 3. The anti-loosening threaded connection assembly 3 includes a screw 4, a conical ring body 5, a frustum block 6, an installation groove 7, a steel ball 8, an installation cavity 9, a slide hole 10, a compression spring 11, a limit block 12 and a movable rod 13. The screw 4 is fixedly installed in the middle of the outer surface of the upper end of the welding head 2, and the outer wall of the screw 4 is threadedly connected with the threaded hole at the lower end of the amplitude changer 1.

[0026] The conical ring body 5 is fixedly installed on the outer surface of the upper end of the screw 4; the slide hole 10 is opened in the middle of the outer surface of the upper end of the screw 4, and the installation cavity 9 is opened inside the screw 4. The lower end of the slide hole 10 communicates with the installation cavity 9; both the compression spring 11 and the limit block 12 are located in the installation cavity 9. The outer surface of the lower end of the compression spring 11 is fixedly connected with the bottom of the installation cavity 9, and the outer surface of the upper end of the compression spring 11 is fixedly connected with the outer surface of the lower end of the limit block 12. The movable rod 13 is fixedly installed in the middle of the outer surface of the upper end of the limit block 12; the frustum block 6 is fixedly installed on the outer surface of the upper end of the movable rod 13, and the installation groove 7 is opened in the middle of the outer surface of the upper end of the frustum block 6. The steel ball 8 is rotatably installed in the installation groove 7; the outer wall of the movable rod 13 is slidably connected with both the slide hole 10 and the inner wall of the conical ring body 5, the outer wall of the limit block 12 is slidably connected with the installation cavity 9, the outer surface of the lower end of the limit block 12 is elastically connected with the bottom of the installation cavity 9 through the compression spring 11, and the outer wall of the frustum block 6 is slidably connected with the inner wall of the conical ring body 5.

[0027] It should be noted that the present utility model is an ultrasonic soldering gun with a loosening prevention structure. The horn 1 and the welding head 2 described in the text both belong to the prior art. A threaded hole is provided at the bottom of the horn 1, which can be effectively known to those skilled in the art of the relevant technical field, and will not be elaborated here. The provided anti-loosening threaded connection assembly 3 has a screw rod 4 fixed in the middle of the outer surface of the upper end of the welding head 2. When the welding head 2 is threadedly connected to the horn 1 through the anti-loosening threaded connection assembly 3, the upper end of the anti-loosening threaded connection assembly 3 is inserted into the threaded hole at the bottom of the horn 1. By providing a conical ring body 5, the area of the top of the anti-loosening threaded connection assembly 3 is reduced, so that the anti-loosening threaded connection assembly 3 can be easily inserted into the threaded hole at the bottom of the horn 1, reducing the installation time. Then, the screw rod 4 is threadedly connected to the horn 1. After the top of the anti-loosening threaded connection assembly 3 contacts and presses against the upper end of the threaded hole in the horn 1, the frustum-shaped block 6 drives the movable rod 13 to slide along the sliding hole 10, and the movable rod 13 drives the limiting block 12 to press the compression spring 11 in the installation cavity 9. The provided steel balls 8 reduce the resistance encountered during rotation when the anti-loosening threaded connection assembly 3 is threadedly connected to the horn 1. After the welding head 2 is threadedly connected to the horn 1 through the anti-loosening threaded connection assembly 3, the compression spring 11 is in a compressed state. By the reaction force released by the compression spring 11, the axial tension between the connecting screw rod 4 and the horn 1 is enhanced, thereby increasing the friction force, generating a resistance moment, and further preventing loosening and improving stability.

[0028] It should be noted that in this text, relational terms such as first and second (No. 1, No. 2) are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An ultrasonic soldering gun with a loosening prevention structure, comprising a horn (1) and a soldering head (2), the soldering head (2) being located at the lower end of the horn (1), and a threaded hole being provided on the outer surface of the lower end of the horn (1), characterized in that: A middle part of an outer surface of an upper end of the welding head (2) is fixedly provided with an anti-loosening threaded connection assembly (3). The anti-loosening threaded connection assembly (3) includes a screw rod (4), a conical ring body (5), a frustum block (6), a mounting groove (7), steel balls (8), a mounting cavity (9), a sliding hole (10), a compression spring (11), a limiting block (12) and a movable rod (13). The screw rod (4) is fixedly installed at the middle part of the outer surface of the upper end of the welding head (2), and an outer wall of the screw rod (4) is in threaded connection with a threaded hole at a lower end of the amplitude transformer (1).

2. The ultrasonic soldering gun with a loosening prevention structure according to claim 1, characterized in that: The conical ring body (5) is fixedly installed on an outer surface of an upper end of the screw rod (4).

3. The ultrasonic soldering gun with a loosening prevention structure according to claim 2, characterized in that: The sliding hole (10) is formed in the middle part of the outer surface of the upper end of the screw rod (4), the mounting cavity (9) is formed in the screw rod (4), and a lower end of the sliding hole (10) communicates with the mounting cavity (9).

4. The ultrasonic soldering gun with a loosening prevention structure according to claim 3, characterized in that: The compression spring (11) and the limiting block (12) are both located in the mounting cavity (9). A lower outer surface of the compression spring (11) is fixedly connected with a bottom of the mounting cavity (9), an upper outer surface of the compression spring (11) is fixedly connected with a lower outer surface of the limiting block (12), and the movable rod (13) is fixedly installed at the middle part of an upper outer surface of the limiting block (12).

5. The ultrasonic soldering gun with an anti-loosening structure according to claim 4, characterized in that: The frustum block (6) is fixedly installed on an outer surface of an upper end of the movable rod (13), the mounting groove (7) is formed in the middle part of the outer surface of the upper end of the frustum block (6), and the steel balls (8) are rotatably installed in the mounting groove (7).

6. The ultrasonic soldering gun with a loosening prevention structure according to claim 5, characterized in that: An outer wall of the movable rod (13) is in sliding connection with an inner wall of the sliding hole (10) and the conical ring body (5), an outer wall of the limiting block (12) is in sliding connection with the mounting cavity (9), a lower outer surface of the limiting block (12) is elastically connected with a bottom of the mounting cavity (9) through the compression spring (11), and an outer wall of the frustum block (6) is in sliding connection with an inner wall of the conical ring body (5).

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