A turning fixture suitable for crystal resonators with ceramic bases without Kovar rings

A technology of crystal resonator and ceramic base, applied in semiconductor/solid-state device manufacturing, electrical components, impedance network, etc., can solve the problems of unsuitability and difficulty of quartz crystal resonator

CN114124013BActive Publication Date: 2022-05-10鸿星科技(集团)股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-05-10

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Abstract

The invention discloses a flipping jig suitable for a crystal resonator with a ceramic base without a kovar ring, which belongs to the technical field of high-performance crystal resonators for communication base stations. Ferrite anisotropic permanent magnets, NdFeB magnets; among them, the inner and edge of the magnetic tray are provided with grooves, and the inner grooves are filled with ferrite anisotropic permanent magnets; a single ferrite The magnetic flux density of the anisotropic permanent magnet is between 240mT and 270mT. By adopting the turning jig of the present application suitable for crystal resonators with ceramic bases without kovar rings, the production efficiency of butt jointing of sealing and welding plates of crystal resonators with ceramic bases without kovar rings can be improved.
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Description

technical field

[0001] The invention relates to the technical field of high-performance crystal resonators used in communication base stations, and more specifically, relates to a turning fixture suitable for crystal resonators with ceramic bases without kovar rings. Background technique

[0002] Ceramic base is the basic component of high-performance quartz crystal resonators for communication (Cao Yongmei. Basic knowledge and application of quartz crystal resonators [J]. China Science and Technology Information, 2012 (11)).

[0003] There are two types of crystal resonator package bases, such as Figure 1-2 As shown, one is ceramic base with Kovar ring (see: https: / / www.doc88.com / p-8651796996995.html) (its characteristic is ceramic base + Kovar ring + metal upper cover) , the other is ceramic base without Kovar ring (see: https: / / www.docin.com / p-1182470129.html) (its features are: ceramic base without Kovar ring + glue + ceramic cover).

[0004] The ceramic base without ...

Examples

Embodiment 1

[0054]

[0055] As is known knowledge, ceramic bases with Kovar rings are magnetic, while ceramic bases without Kovar rings are non-magnetic. However, the team of inventors discovered that the ceramic base without a kovar ring also has weak magnetism, which is a phenomenon that has not been discovered before and is unknown knowledge.

[0056]

[0057] On the basis of the aforementioned knowledge, the team of inventors thought that "we can use the weak magnetism found in the ceramic base without kovarable rings to cleverly design and utilize this weak magnetism to design a set of flip transfer fixtures".

[0058] In order to achieve the above goals, the team of inventors has carried out several researches. After retrieval: CN 210655231 U has proposed a magnetic product flip fixture, which uses: a groove is set in the magnetic suction plate to put the magnet, and then the magnetic suction plate and the The positioning plate is socketed, and the through holes on the positioni...