An ultrasonic precision sealing device and method

An ultrasonic and precision sealing technology, which is applied in the field of ultrasonic precision sealing devices, can solve problems such as difficult pressure and precise control of tool head position, influence of micro-device shape precision, and difficulty in precise energy control, so as to ensure consistency and uniformity, Improve the sealing quality and avoid the effect of excess energy

CN106182741BActive Publication Date: 2018-06-05DALIAN JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-06-05

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Abstract

The invention discloses an ultrasonic precise sealing connecting device and method. The device comprises an ultrasonic generator, an ultrasonic transducer, an ultrasonic tool bit, a pressure applying mechanism, a sealing connecting worktable, a data processing unit and a control unit. The control unit controls a drive motor to control the ultrasonic tool bit to move along a movement guide rail. A piezoelectric acceleration sensor is used for detecting vibration information of the bottom of a machined device. A piezoelectric dynamic pressure sensor is used for detecting the dynamic pressure borne by the machined device. A data acquisition card is used for acquiring vibration information detected by the piezoelectric acceleration sensor and dynamic pressure detected by the piezoelectric dynamic pressure sensor. The control unit controls the drive motor and the ultrasonic generator to work according to data information transmitted by the data acquisition card. The control unit controls the ultrasonic generator to transmit ultrasonic waves different in amplitude. According to the ultrasonic precise sealing connecting device and method, self-adaptation compensation can be made for errors existing on the surface of a micro device, consistency of the sealing connecting quality is improved, and the sealing connecting precision is improved.
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Description

technical field

[0001] The invention relates to the technical field of micro-nano system assembly, in particular to an ultrasonic precision sealing device and method. Background technique

[0002] Thermoplastic polymer materials are more and more widely used in the field of micro-nano manufacturing. The integration of polymer micro-nano functional devices and the assembly of components have become key technologies in micro-nano manufacturing technology. Ultrasonic sealing has the advantages of high strength, high efficiency, local heat generation, and no need to introduce additives. Since it was applied to the packaging of microfluidic chips, micropumps, and microvalves in 2006, it has demonstrated good technical advantages and potential. As the application field of ultrasonic welding technology shifts from large-sized parts to micro-nano structures with smaller sizes and higher precision requirements, its research focus shifts from strength to precision. Shape accuracy, wh...

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] figure 1 Schematic diagram of the structure of the ultrasonic precision sealing device provided by the present invention, as figure 1 As shown, the ultrasonic precision sealing device provided by the prese...