Negative-pressure-driven annular micro-wedge-shaped bristle bundle suction cup and preparation method thereof

Abstract

The invention discloses a negative-pressure-driven annular micro-wedge-shaped bristle bundle suction cup and a preparation method thereof, and relates to the technical field of annular micro-wedge-shaped bristle bundle suction cups. The suction cup comprises a suction cup body, a negative-pressure cavity is formed in the middle of the suction cup body, and the top of the negative-pressure cavity is connected with a vacuum air channel. A deformation layer is arranged at the bottom of the negative-pressure cavity, an annular micro-wedge-shaped bristle bundle is arranged at the bottom of the suction cup body, and the deformation layer is located in the middle of the annular micro-wedge-shaped bristle bundle. The preparation method comprises the steps of: selecting mold materials; manufacturing a mold through machining, and machining an annular micro-wedge-shaped structure on the surface of the mold; pouring a liquid silica gel material into the area, with an annular micro-wedge-shaped structure, of the mold, and conducting vacuum bubble removal treatment; covering the surface of the mold with the bottom of the suction cup body, and after the liquid silica gel is completely cured at normal temperature, removing the suction cup body from the surface of the mold, or pasting the annular micro-wedge-shaped bristle bundle to the bottom of the suction cup body through glue. According to the negative-pressure-driven annular micro-wedge-shaped bristle bundle suction cup and the preparation method thereof, the stable tangential loading and unloading process of the annular micro-wedge-shaped bristle bundle is achieved.

Description

technical field [0001] The invention relates to the technical field of an annular micro-wedge-shaped bristle bundle suction cup, in particular to a negative-pressure-driven annular micro-wedge-shaped bristle bundle suction cup and a preparation method thereof. Background technique [0002] With the continuous development of precision micro-nano manufacturing technology, researchers have successively proposed a series of imitation gecko setae production processes, and produced a number of imitation gecko setae samples with different shapes and properties in the laboratory. It has a special-shaped structure, has outstanding controllability, and can quickly switch between the state of adhesion and desorption, so it is suitable for use in the field of adhesion operations. [0003] At present, the distribution structure of bionic micro-wedge-shaped bristle bundles is mainly divided into parallel structure array type and circular structure array type. The driving method of paralle...

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Problems solved by technology

Among them, the method of tendon wire is point contact loading. It is difficult to ensure the tension of tendon wire in actual assembly, which can easily lead to loose tendon wire, resulting in insufficient adhesion, resulting in uneven distribution of loading load, easy to generate stress concentration, and eventually lead to adhesion failure; Guide rail slider type tangential drive, by driving the slider on the guide rail to generate pure tangential displacement to drive the micro-wedge-shaped bristle bundles to bend under force to realize the loading process, but it is difficult to ensure that the symmetrically distributed micro-wedge-shaped bristle bundles are on the same plane flatness, resulting in partial bristle bundle loading failure

[0004] Therefore, the driving mode of parallel structure array micro-wedge-shaped bristle bundles has poor stability, it is difficult to provide reliable loading, and it is prone to adhesion failure.

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