关键词: 天然橡胶, 偏摆式, 割胶装置, 振动机理

Abstract: Natural rubber is an important strategic material in our country. In this paper, an electric-driven bias rubber tapping device was designed for the serious loss of rubber workers and the difficulty of mechanization of rubber tapping. Based on the theoretical analysis and mathematical modeling, the finite element model of the transmission structure was established by Adams and ANSYS, and the motion characteristic law was expounded to verify the accuracy of the model construction, and the stress distribution, dynamic characteristics and vibration mechanism of the transmission parts were analyzed in the process of motion. It provided a reference way for the design and later improvement of portable rubber tapping device. Through the analysis of kinematics, the errors of blade swing, transmission structure force and theoretical calculation value were 4% and 3%, respectively. In the numerical simulation, the maximum stress of the transmission structure appears at the connection between the Y-type drive fork and the tapper seat, and the equivalent stress in the three directions of XYZ is all less than the yield limit of the material, so there will be no failure and no resonance. According to the experimental analysis, compared with the traditional manual glue tapper, the average difference of the offset glue tapping device prototype in the glue tapping speed, skin consumption thickness and glue tapping depth is respectively 42.3%, 4.3%, 0.6%, among which the difference of glue tapping speed is more significant. The theoretical model analysis results of the rubber tapping device are basically consistent with the actual prototype manufacturing test.

Key words: natural rubber, offset type, glue tapping device, mechanism of vibration