Design and test of the crank slider mechanism feeding type rubber rotary cutting machine
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Design and test of the crank slider mechanism feeding type rubber rotary cutting machine Shihao Liu1,2 · Mao Lin1 Received: 20 November 2019 / Accepted: 7 April 2020 © Springer Nature Switzerland AG 2020
Abstract Aiming at the problems such as low processing efficiency and high labor intensity when the rubber block was processed, a new type of crank slider mechanism feeding style rubber rotary cutting machine was designed with the help of computer. Starting with the two major processing steps of pushing and cutting the rubber block, an offset crank slider mechanism was used to push the rubber block in order to improve the processing efficiency of the rubber block. The V-belt was driven by the motor to rotate the circular saw blade, and the ball screw drove the rubber cutting table to make the rubber block perform reciprocating linear motion. The synthesis of the above two motions could achieve efficient cutting of the rubber block. Taking the needs of the rubber block cutting process into account, the flat belt width of the transmission rubber block was designed to be 355 mm, so that the machine had a good adaptability to rubber blocks. The modal simulation analysis determined that the optimal thickness of the circular saw blade was 3 mm and the optimal diameter of the circular saw blade was 500 mm. And the static finite element simulation analysis results also showed that the circular saw blade with this set of parameters had good strength and stiffness. After the orthogonal test was conducted on the prototype of crank slider mechanism feeding style rubber rotary cutting machine, the test results showed that the machine could cut 15 rubber blocks averagely per minute and each test produced less than 10 g rubber residue. In a word, the designed machine not only improved the cutting efficiency, but also met the demand for green and efficient processing of the modern agricultural products. Keywords Rubber rotary cutting machine · Finite element modeling · Simulation analysis · Orthogonal test
1 Introduction Rubber tree is a typical tropical characteristic plant native to tropical forests of Amazonia in South America, and the natural rubber it produces is an important strategic material indispensable to modern industry. Rubber trees have been introduced into China for more than one hundred years. The main rubber planting areas are located in Danzhou, Qiongzhong and Wanning and other counties of Hainan province of China. As the most important rubber production base in China, Hainan produces about 2/3 of the country’s total [1, 2], and more than 1 million people are engaged in
rubber related industries directly or indirectly, which has huge potential for development. At present, the cultivation of rubber trees in Hainan has become large-scale, and the rubber processing, transportation, and sales industries that have developed along with them have become the pillar industries in Hainan Province [3]. There are dozens of rubber processing companies in Hainan Province, but only a few companies have a certain degree of
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