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Design and Experiment of Automatic Clip-Feeding Mechanism for Vegetable-Grafting Robot

Author

Listed:
  • Kai Jiang

    (Research Center of Intelligent Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    National Engineering Research Center of Intelligent Equipment for Agricultural (NERCITA), Beijing 100097, China)

  • Wenzhong Guo

    (Research Center of Intelligent Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    National Engineering Research Center of Intelligent Equipment for Agricultural (NERCITA), Beijing 100097, China)

  • Liping Chen

    (Research Center of Intelligent Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    National Engineering Research Center of Intelligent Equipment for Agricultural (NERCITA), Beijing 100097, China)

  • Wenqian Huang

    (Research Center of Intelligent Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    National Engineering Research Center of Intelligent Equipment for Agricultural (NERCITA), Beijing 100097, China)

  • Yiyuan Ge

    (College of Mechanical and Engineering, Jiamusi University, Jiamusi 154007, China)

  • Xiaoming Wei

    (Research Center of Intelligent Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    National Engineering Research Center of Intelligent Equipment for Agricultural (NERCITA), Beijing 100097, China)

Abstract

Aiming to solve the problems of poor performance and low stability in the automatic clip-feeding of a grafting machine, an automatic clip-feeding mechanism with a precise single-clip discharge mechanism was designed, and a clip-feeding performance test was carried out. Taking the grafting clip of the 2TJGQ-800 type of vegetable-grafting robot as the research object, the clamping-force analysis model of the grafting clip was constructed by ABUQUS finite-element analysis software, and the variation law of clamping force, steel wire diameter, and opening deformation, as well as the calculation equation of clamping force, were obtained. The grafting clip model was verified by mechanical test, and test results showed that the grafting clip with a steel wire diameter of 0.7 mm proved safe and reliable for grafted cucumber and watermelon seedlings; the grafting clip with steel wire diameter of 0.8 mm had a risk of producing injury to grafted cucumber and watermelon seedlings when clamping. The method of single-clip discharge in the inclined discharging slideway was put forward, and the components for clip discharge and clip pushing were designed. The critical thrust for sending out the grafting clip in the clip-feeding slideway was 0.603 N after analyzing the force status of the grafting clip in the clip-feeding slideway. Test results showed that the success rate of automatic clip-feeding reached 98.67% when inclination angle of row-discharging slideway was 50° and the thrust of clip-pushing cylinder (input air pressure of 0.4 MPa) was 8.04 N, which met the technical requirements of mechanical grafting. The inclination of the grafting clip and the damaged clip in the feeding slideway is the main reason for the failure of clip-feeding. The research results can provide theoretical and design references for the innovative research of the automatic clip-feeding mechanism of grafting robots.

Suggested Citation

  • Kai Jiang & Wenzhong Guo & Liping Chen & Wenqian Huang & Yiyuan Ge & Xiaoming Wei, 2022. "Design and Experiment of Automatic Clip-Feeding Mechanism for Vegetable-Grafting Robot," Agriculture, MDPI, vol. 12(3), pages 1-16, February.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:3:p:346-:d:760925
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    References listed on IDEAS

    as
    1. Filippos Bantis & Athanasios Koukounaras & Anastasios S. Siomos & Christodoulos Dangitsis, 2020. "Impact of Scion and Rootstock Seedling Quality Selection on the Vigor of Watermelon–Interspecific Squash Grafted Seedlings," Agriculture, MDPI, vol. 10(8), pages 1-10, August.
    2. Changjin Liu & Weiguo Lin & Chongran Feng & Xiangshuai Wu & Xiaohu Fu & Mu Xiong & Zhilong Bie & Yuan Huang, 2021. "A New Grafting Method for Watermelon to Inhibit Rootstock Regrowth and Enhance Scion Growth," Agriculture, MDPI, vol. 11(9), pages 1-13, August.
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