A kind of porcelain nozzle clamping structure

Abstract

The invention discloses a porcelain nozzle clamping structure and particularly relates to an ultrasonic amplitude-change pole clamping mechanism which is used for the field of semiconductors and electronic packaging. The porcelain nozzle clamping structure comprises an amplitude-change pole, wherein the head part of the amplitude-change pole is provided with a porcelain nozzle hole and an auxiliary hole for clamping a porcelain nozzle; three slots are arranged along the porcelain nozzle hole; and the surface of the porcelain nozzle hole is divided into three surfaces by the three slots, wherein the auxiliary hole is divided into left and right sides by one slot. Before the porcelain nozzle is mounted, a space defined by the three surfaces of the porcelain nozzle hole is smaller than the outer diameter of the porcelain nozzle, so that the porcelain nozzle cannot be inserted. When a spacing between two transverse fields of the auxiliary hole is increased by use of a tool, the three slots generate elastic deformation, the opening width of the three slots is increased, the mutual distance among the three surfaces is correspondingly increased, and the defined space is greater than the outer diameter of the porcelain nozzle, so that the porcelain nozzle is inserted into the porcelain nozzle hole. When the tool is taken out, the clamping structure is restored to the original shape because of elasticity of the amplitude-change pole material, and the three surfaces of the porcelain nozzle hole are drawn close to one another for tightly holding the porcelain nozzle. Different from a conventional mode of clamping the porcelain nozzle by use of two surfaces, the structure clamps the porcelain nozzle by three surfaces in different directions, so that the clamping effect is more stable.

Description

technical field [0001] The invention is applied to a horn for ultrasonic welding in the field of semiconductor and electronic packaging, and in particular relates to a clamping structure of a porcelain nozzle. Background technique [0002] The horn with ultrasonic welding function is widely used in the semiconductor and electronic packaging industries. A ceramic nozzle is installed at one end, and the other end or near the middle part is directly or indirectly connected to the piezoelectric material. When working, the horn receives the ultrasonic vibration from the piezoelectric material that converts the alternating electric energy, and transmits it to the ceramic nozzle. This vibration is mainly manifested as longitudinal vibration along the length direction of the horn. [0003] Usually, the vibration amplitude of the horn close to the ceramic mouth end is amplified by the horn. Driven by the horn, the porcelain nozzle also produces corresponding ultrasonic vibration. ...

AI Technical Summary

Problems solved by technology

When the horn (1) vibrates longitudinally with the porcelain mouth (4), there is a very large alternating friction force between the contact surface of the porcelain mouth hole (1) and the porcelain mouth (4), which is easy to generate on the contact surface Slippage not only affects the stability and consistency of welding, but also wears out the surface of the ceramic nozzle hole (1) over time

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