Torsion welding head and welding assembly

Abstract

The utility model belongs to the technical field of ultrasonic welding, and particularly relates to a torsion welding head and a welding assembly, the torsion welding head is used for transferring and welding a fisheye needle, the torsion welding head comprises a welding head body and a welding nozzle, the welding nozzle is arranged at one end of the welding head body, an angle limiting part, a guide part and a positioning part are arranged in the welding nozzle, and the angle limiting part is arranged on the guide part. The angle limiting part is matched with the fisheye needle in a clamping manner, the guide part is matched with the fisheye needle in a guiding manner, and the positioning part is buckled with the fisheye needle; the fisheye needle welding head has the advantages that a plurality of fisheye needles can be sequentially welded on the base plate and are kept at the same mounting angle, the consistency of welding angles is guaranteed, the fisheye needles can enter the welding head body more smoothly through the unique structural design of the welding nozzle, and the transferring and welding process is guaranteed to be smoother and quicker.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic welding, and in particular relates to a torsion welding head and a welding assembly. Background Art

[0002] With the development of information equipment technology, digital information equipment in the fields of communications, transportation, aerospace, medical instruments, high-end weapons, etc. has higher requirements for the performance of high-speed connector products. Such as high density, modularization, high reliability, and multi-function, in order to meet the modularization, integration, environmental resistance, and anti-interference of system transmission. In the past, the development of electrical connectors mainly considered mechanical properties, such as plug-in and pull-out force and pin flatness, and then considered the electrical properties of the connector, such as insulation resistance, rated current, and contact resistance. With the advent of the high-speed communication era, the performance requirements for electrical connectors have become more stringent, and the transmission line effect caused by high-speed transmission cannot be ignored. Ensuring the integrity of high-speed connector signals has become a key factor in connector design.

[0003] There are three main ways to connect electronic connectors to PCB: one is plug-in terminal connection (Compliant in or press-fit pin); the second is through hole solder; the third is surface mount technology (SMT). Among them, Press-fit connectors are widely used in communication, computer and other industries due to their low cost, high efficiency, simple operation and high reliability. There are various forms of Press-fit terminal design in the industry, each with its own advantages and disadvantages, and among them, EON (Eye of Needle), or fisheye terminal, is the most widely used terminal structure.

[0004] Due to the unique structural design of the fisheye pin, a consistent installation angle must be ensured when multiple fisheye pins are welded to the substrate in sequence. If the fisheye pins are welded using the traditional pin-to-substrate welding method, the arrangement direction of the fisheye pins after welding is random, which can easily lead to irregular arrangement of the fisheye pins during assembly, and a disordered layout, which in turn affects the performance of the connector.

[0005] Based on this, it is necessary to improve the defects in the prior art to overcome the shortcomings in practical applications. Utility Model Content

[0006] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the purposes of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the purposes of the present invention is to provide a torsional welding head and welding assembly that meets one or more of the above-mentioned needs.

[0007] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a torsion welding head for transferring and welding a fisheye needle, comprising a welding head body and a welding nozzle, wherein the welding nozzle is arranged at one end of the welding head body, and an angle limiting part, a guiding part and a positioning part are arranged in the welding nozzle, the angle limiting part is clamped and matched with the fisheye needle, the guiding part is matched with the fisheye needle guide, and the positioning part is buckled with the fisheye needle.

[0009] As a preferred solution, the welding head body is provided with an adsorption cavity and an adsorption hole, the adsorption hole is communicated with the adsorption cavity, and the adsorption cavity is communicated with the welding nozzle.

[0010] As a preferred solution, the guide portion is arranged between the angle limiting portion and the positioning portion, and the guide portion has a conical structure.

[0011] As a preferred solution, the guide portion includes a guide groove and a transition arc area, and the fisheye needle moves along the guide groove and transitionally cooperates with the transition arc area.

[0012] As a preferred solution, the length of the guide portion is 10 to 30 mm.

[0013] As a preferred solution, the angle limiting portion is a square groove, and the square groove is snap-fitted with the needle head of the fisheye needle.

[0014] As a preferred solution, the positioning portion is a circular hole, and the outer end of the circular hole is buckled with the needle seat of the fisheye needle.

[0015] As a preferred solution, the inner diameter of the angle limiting portion is smaller than the inner diameter of the guiding portion, and the inner diameter of the guiding portion is smaller than the inner diameter of the positioning portion.

[0016] As a preferred solution, a mounting portion is provided at one end of the welding head body away from the welding nozzle, and the mounting portion is provided with a threaded hole.

[0017] The utility model also provides a welding assembly, comprising a transducer, an amplitude modulator and a torsion welding head as described in any of the above schemes, wherein the transducer is connected to the amplitude modulator, and the amplitude modulator is connected to the torsion welding head.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a torsion welding head, which can weld a plurality of fisheye needles to a substrate in sequence and keep the same installation angle, thereby ensuring the consistency of the welding angle.

[0020] The utility model provides a torsion welding head, which enables the fisheye needle to enter the welding head body more smoothly through the unique structural design of the welding nozzle, thereby ensuring that the transfer and welding processes are smoother and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a torsion welding head according to an embodiment of the utility model;

[0023] Figure 2 This is a cross-sectional view of the torsional welding head and the fisheye needle of the embodiment of the utility model when they are matched;

[0024] Figure 3 yes Figure 2 A magnified view of part A;

[0025] Figure 4 is a cross-sectional view of a torsional welding head according to an embodiment of the utility model;

[0026] Figure 5 yes Figure 4 A magnified view of part B;

[0027] Figure 6 is a schematic diagram of the cross-sectional structure of the angle limiting portion;

[0028] Figure 7 It is a schematic diagram of the structure of a fisheye needle according to an embodiment of the utility model;

[0029] In the figure: 1 welding head body, 11 adsorption cavity, 12 adsorption hole, 13 mounting part, 2 welding nozzle, 21 angle limiting part, 22 guide part, 221 guide groove, 222 transition arc area, 23 positioning part, 3 fisheye needle, 31 needle head, 32 needle seat. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0031] In the description of the embodiments of the present application, terms such as "upper", "lower", "front", and "back" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do 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 application.

[0032] like Figures 1 to 7 As shown, an embodiment of the present application provides a torsional welding head for transferring and welding a fisheye needle 3, comprising a welding head body 1 and a welding nozzle 2. The welding nozzle 2 is arranged at one end of the welding head body 1, and an angle limiting portion 21, a guide portion 22 and a positioning portion 23 are arranged in the welding nozzle 2. The angle limiting portion 21 is clip-fitted with the fisheye needle 3, the guide portion 22 is guided and cooperated with the fisheye needle 3, and the positioning portion 23 is buckled with the fisheye needle 3.

[0033] Specifically, an adsorption chamber 11 is axially provided inside the welding head body 1, and an adsorption hole 12 is provided inside the welding head body 1, and the adsorption hole 12 is communicated with the adsorption chamber 11, and the adsorption chamber 11 is communicated with the welding nozzle 2. The adsorption chamber 11 is evacuated through the adsorption hole 12, and then the fisheye needle 3 is sucked into the welding nozzle 1 and fixed, which can not only realize the clamping and fixing of the fisheye needle during the transfer process, but also realize the positioning and fixing of the fisheye needle when welding the fisheye needle.

[0034] Furthermore, the guide portion 22 is disposed between the angle limiting portion 21 and the positioning portion 23, and the guide portion 22 is a conical structure. Figure 7 As shown, due to the unique structural design of the fisheye needle, the guide portion 22 with a conical structure can ensure that the needle head 31 of the fisheye needle 3 can smoothly enter the angle limiting portion 21 and be snap-connected with the angle limiting portion 21, and the needle seat 32 is snap-connected with the positioning portion 23, thereby realizing the positioning and fixation of the fisheye needle, and preventing the fisheye needle 3 from slipping out of the welding nozzle 1.

[0035] Furthermore, the guide portion 22 includes a guide groove 221 and a transition arc area 222. The fisheye needle 3 moves along the guide groove 221 and transitions with the transition arc area 222. The needle head 31 of the fisheye needle 3 is a flat cubic structure, and the needle head 31 has a transition arc. The transition arc area 222 can ensure that the needle head 31 can smoothly enter the angle limiting portion 21. The angle limiting portion 21 can maintain a consistent positioning angle each time a different fisheye needle is transferred, thereby ensuring the position accuracy of the welded fisheye needle and the substrate.

[0036] Furthermore, the length of the guide portion 22 is 10 to 30 mm, preferably 30 mm. The length of the guide portion 22 varies according to the length of the fisheye needle and can be specifically set according to actual needs.

[0037] Furthermore, the angle limiting portion 21 is a square groove, and the square groove is engaged with the needle head 31 of the fisheye needle 3. The square groove 21 has a transition chamfer, and a certain gap can be maintained when the needle head 31 of the fisheye needle 3 is engaged with the square groove 21, so as to avoid scratches on the surface of the fisheye needle and ensure the surface roughness and smoothness of the fisheye needle.

[0038] In some specific embodiments, the positioning portion 23 is a circular hole, and the outer end of the circular hole is buckled with the needle seat 32 of the fisheye needle 3. The needle seat is a cylindrical structure, and the positioning portion of the circular hole can ensure that the needle seat and the positioning portion are buckled, ensuring that the position of the fisheye needle remains consistent when transferring and welding.

[0039] Furthermore, the inner diameter of the angle limiting portion 21 is smaller than the inner diameter of the guide portion 22, and the inner diameter of the guide portion 22 is smaller than the inner diameter of the positioning portion 23. The inner diameter of the welding nozzle changes in a gradient to ensure that the fisheye needle enters the welding nozzle smoothly. When multiple fisheye needles are transferred and welded in sequence, the fisheye needles are arranged regularly and the orientation layout is orderly.

[0040] In some specific embodiments, a mounting portion 13 is provided at one end of the welding head body 1 away from the welding nozzle 2, and the mounting portion 13 is provided with a threaded hole. The welding head is fixed by installing a bolt in the threaded hole and connecting it to the amplitude modulator. By setting the connection angle between the bolt and the threaded hole, the angle position of the welding nozzle can also be adjusted, thereby realizing the angle position when transferring and welding the fisheye needle.

[0041] In some specific embodiments, the welding nozzle is detachably connected to the welding head body, and specifically a threaded connection can be used. When the welding nozzle is worn or has been used for a certain life, it is easy to replace, thereby improving the installation and disassembly efficiency, avoiding the need to replace the entire welding head, and reducing the cost of use.

[0042] The embodiment of the present application also provides a welding assembly, including a transducer, an amplitude modulator, and the torsion welding head as described above, wherein the transducer is connected to the amplitude modulator, and the amplitude modulator is connected to the torsion welding head. When welding the fisheye needle, the high-frequency vibration is transmitted to the welding head through the transducer and the amplitude modulator, and the fisheye needle is welded to the substrate through the high-frequency vibration of the welding head.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] The above description is only a detailed description of the preferred embodiments and principles of the present application. For ordinary technicians in this field, there will be changes in the specific implementation methods based on the ideas provided by the present application, and these changes should also be regarded as the scope of protection of the present application.

Claims

1. A torsional welding head for transferring and welding fisheye needles, characterized in that: It includes a welding head body and a welding nozzle, wherein the welding nozzle is arranged at one end of the welding head body, and an angle limiting part, a guiding part and a positioning part are arranged inside the welding nozzle, the angle limiting part is clamped and matched with the fisheye needle, the guiding part is matched with the fisheye needle guide, and the positioning part is buckled with the fisheye needle.

2. A torsional welding head according to claim 1, characterized in that: The welding head body is provided with an adsorption cavity and an adsorption hole, the adsorption hole is communicated with the adsorption cavity, and the adsorption cavity is communicated with the welding nozzle.

3. A torsional welding head according to claim 1, characterized in that: The guide portion is arranged between the angle limiting portion and the positioning portion, and the guide portion is in a conical structure.

4. A torsional welding head according to claim 1, characterized in that: The guide portion comprises a guide groove and a transition arc area. The fisheye needle moves along the guide groove and transitionally cooperates with the transition arc area.

5. A torsional welding head according to claim 1, characterized in that: The length of the guide portion is 10 to 30 mm.

6. A torsional welding head according to claim 1, characterized in that: The angle limiting portion is a square groove, and the square groove is snap-fitted with the needle head of the fisheye needle.

7. A torsional welding head according to claim 1, characterized in that: The positioning portion is a circular hole, and the outer end of the circular hole is buckled with the needle seat of the fisheye needle.

8. A torsional welding head according to claim 1, characterized in that: The inner diameter of the angle limiting portion is smaller than the inner diameter of the guiding portion, and the inner diameter of the guiding portion is smaller than the inner diameter of the positioning portion.

9. A torsional welding head according to claim 1, characterized in that: A mounting portion is provided at one end of the welding head body away from the welding nozzle, and the mounting portion is provided with a threaded hole.

10. A welding assembly, characterized in that: It comprises a transducer, an amplitude modulator and a torsional welding head as claimed in any one of claims 1 to 9, wherein the transducer is connected to the amplitude modulator, and the amplitude modulator is connected to the torsional welding head.

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