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Adsorption-type ultrasonic tool head applied to the connection of polymer micro-devices

A micro device and tool head technology, applied in the field of polymer micro device assembly, can solve problems such as unconsidered problems, lack of parts clamping and fixing functions, etc., and achieves improved processing quality, uniform welding, and welding seams. Effect

Inactive Publication Date: 2012-02-22
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Authorized announcement number: CN2571528], does not consider the problems existing in the application of ultrasonic welding in the field of polymer micro-device assembly, does not have the function of clamping and fixing parts, and is not suitable for the connection of micro-device

Method used

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  • Adsorption-type ultrasonic tool head applied to the connection of polymer micro-devices
  • Adsorption-type ultrasonic tool head applied to the connection of polymer micro-devices
  • Adsorption-type ultrasonic tool head applied to the connection of polymer micro-devices

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Embodiment Construction

[0012] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0013] There is a threaded hole 2 on the top of the ultrasonic tool head main body 1 for connecting the transducer; the protruding position 4 in the middle is a node position, and the theoretical vibration amplitude of this position is zero, which is used to clamp and fix the entire ultrasonic tool head, and This position applies welding pressure to the device to be connected; at the end of the ultrasonic tool head is the ultrasonic radiation surface 10, and the design of the overall structure ensures that the amplitude of the surface is evenly distributed; there are device fixing structures 5 and adsorption clamping structures 9 on this surface, and the fixing structure 5 is located at the center of the ultrasonic radiation surface 10, and the adsorption and clamping structure 9 is symmetrically distributed on both sides of...

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Abstract

An adsorption-type ultrasonic welding tool head applied to the connection of polymer micro-devices belongs to the technical field of assembly of polymer micro-devices. The fixed structure of the weldment and the vacuum adsorption clamping structure are provided with a ventilation interface at the node position of the tool head. The effects and benefits of the present invention are that after structural dynamics analysis, the structural design realizes the amplitude amplification function of the vibration of the ultrasonic transducer, and the radiation surface vibrates evenly, which ensures uniform welding of devices and neat weld seams, and can significantly improve the ultrasonic welding efficiency. Processing quality. The ventilation interface is located at the node position of the tool head, which can avoid the influence of ultrasonic high-frequency vibration on it. The ultrasonic tool head involved in the present invention has a clamping and fixing structure for the device to be connected, and is an automatic assembly of polymer micro-functional devices. Foundation.

Description

technical field [0001] The invention belongs to the technical field of assembly of polymer micro-devices, and relates to a device for positioning, placing and connecting polymer micro-devices through vacuum adsorption and ultrasonic plastic welding technology, which is applied to polymer microfluidic devices on polymer microfluidic chips connection and packaging. Background technique [0002] With the application of polymer materials in the field of MEMS, the assembly of polymer micro-functional devices has become an important research topic. Traditional joining methods such as thermal welding and adhesive bonding have defects such as low efficiency, low strength, and poor long-term stability; sealing methods that have been studied in recent years, such as infrared welding and laser welding, have limitations in material selection. Ultrasonic welding has the advantages of high welding strength, high efficiency, local heating, and a wide range of applicable materials. It can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/08
Inventor 王晓东孙屹博罗怡乔鹏王立鼎
Owner DALIAN UNIV OF TECH
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