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Absorption ultrasonic tool head applied for connecting the polymers micro-devices

A micro-device and tool head technology, which is applied in the field of polymer micro-device assembly, can solve unconsidered problems, do not have parts clamping and fixing functions, etc., and achieve improved processing quality, uniform welding and uniform vibration of the radiation surface Effect

Inactive Publication Date: 2009-04-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Absorption ultrasonic tool head applied for connecting the polymers micro-devices
  • Absorption ultrasonic tool head applied for connecting the polymers micro-devices
  • Absorption ultrasonic tool head applied for connecting the polymers micro-devices

Examples

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Embodiment Construction

[0012] The specific embodiments of the present invention will be described in detail below with reference to the technical solutions and the accompanying drawings.

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

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Abstract

The invention discloses an adsorption equation ultrasonic welding tool head for connecting polymer micro elements, belonging to the technical field of the assembly of polymer micro elements. The invention is characterized in that the tool head is provided with a round ultrasonic radiation surface which is provided with a fixed structure of an element to be welded and a clamp structure for vaccum adsorption on the surface, and an aeration interface is arranged at the joint of the tool head. The effects and the benefits of the invention are that: by the analysis of structural dynamics, the designed structure realizes the amplifying function on the vibration amplitude of an ultrasonic transducer; the vibration of the radiation surface is even; that the elements are welded evenly and the welding seam is tidy are ensured; and the processing quality of the ultrasonic welding can be obviously improved. The aeration interface is arranged at the joint of the tooling head, the influence of the ultrasonic high frequency vibration on the tool head can be avoided. The invention has the clamp structure and the fixed structure for the elements to be connected, and lays a foundation for the automation of the polymer micro elements.

Description

technical field [0001] The invention belongs to the technical field of assembly of polymer microdevices, and relates to a device for positioning, placing and connecting polymer microdevices through vacuum adsorption and ultrasonic plastic welding technology, and 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 microfunctional 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. The researched sealing methods such as infrared welding and laser welding in recent years 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 overcome the pr...

Claims

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Application Information

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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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