Swing mechanism

Abstract

The embodiment of the invention relates to a swing mechanism which comprises a driving motor, a first rotary piece, a second rotary piece, a first transmission pair, a second transmission pair, a cylindrical cam and a sliding seat, wherein the first rotary piece and the second rotary piece are arranged coaxially and can move axially relative to each other; the first transmission pair is arranged between the output shaft of the driving motor and the first rotary piece so as to drive the first rotary piece; the second transmission pair is arranged between the output shaft of the driving motor and the second rotary piece so as to drive the second rotary piece, and the transmission ratio of the second transmission pair is different from that of the first transmission pair; the cylindrical camis fixedly arranged at one end of the first rotary piece; and the sliding seat is fixedly arranged at the corresponding end of the second rotary piece and is always in contact with a curve profile onthe end surface of the cylindrical cam. Compared with the prior art, the swing mechanism related by the embodiment of the invention has the advantages that the driving motor is not required to be swung, the swing function can be achieved through a mechanical type structure, fittings are saved, the structure is simple, and the swing mechanism is convenient to maintain, repair and operate.

Description

technical field [0001] The invention relates to the field of PCB equipment, in particular to a rocking structure. Background technique [0002] At present, most of the traditional PCB grinding machines can achieve the swing function by installing a swing drive motor, an eccentric block and an eccentric shaft electromechanical combination structure. In the process of implementing the present invention, the inventor found that the prior art has at least the following technical problems: due to the need to install the swing drive motor and corresponding supporting parts, the structure is complicated, the space is relatively large, and maintenance, repair and operation are very inconvenient. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide a swing structure that can achieve the swing function through a mechanical structure without a swing drive motor, saves accessories, has a simple structure, and i...

AI Technical Summary

Problems solved by technology

[0005] The above technical solution has at least the following beneficial effects: because the technical means of making the first rotating member and the second rotating member periodically reciprocate while rotating through the tight fit between the cylindrical cam and the sliding seat is adopted, Therefore, it overcomes the technical problem that the existing technology needs to install the swing drive motor and the corresponding supporting parts, resulting in a complex structure, and then achieves the technical effects of saving parts, simple structure, and easy maintenance, repair and operation.

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