Za Kan

Control System Design of Feeding Conveyer in Tomato Automatic Sorting Assembly Line Based on the LOGO

To effectively monitor the operation of feeding conveyer in automatic tomato selection assembly line and to avoid loss caused by machine’s breakdown, monitor control system was designed for the production line. The hardware circuit was designed using LOGO！ as the core control device, then the software was development. And two working modes (automatic start and manual start) were assembled in the system. Finally, the system was tested in the tomato automatic sorting assembly line. The results indicate that the system can start the machine quickly and respond immediately to break-down.

Design of Control System for Hydraulically Vibrated Processing Tomato Fruit Seedling Separation Device

Eccentric style processing tomato fruit seeding separation device exist high machining and assembly precision or other issues. In order to solve this problem, the mode of vibration of hydraulic replaced the eccentric style to drive the fruit seedling separation roller to separate processing tomato effectively. To facilitate adjustment of the hydraulic system, a kind of control circuit PLC as the core was designed according to the actual production requirements. PLC and other elements were selected. The system control signal frequency was initially set up as 1~5 HZ, within the frequency range hydraulic simulation software was used to simulate and analyze the hydraulic vibration system. The result shows that the system rams steady when the input signal frequency range was 1~5HZ.

Design of Machining Fixture for Thin-Walled and Eccentric Parts

The paper was conducted to solve the low machining accuracy of eccentric parts and thin-walled parts on tomato harvester, reduce the machining steps of thin-walled parts and eccentric parts, and promote the machining accuracy and labor productivity, a special fixture was designed. High concentricity machining was applied based on adjusting the fixture, and manufacturing workpiece didn’t need to dismount, thus the concentricity and machining accuracy of manufacturing workpiece can be achieved. It’s beneficial to improve productivity and production quality.

Design of Collection Tube with Wireless Monitoring System for Cotton Stack Temperature and Humidity

Due to the limited capacity of cotton-processing factory, machine-collecting cannot make sure the process progressing in time and will cause a bad heat dissipation of cotton or a high temperature and humidity. A cotton temperature and humidity wireless monitor is designed to solve the problem. In our experiment, we find that the collecting holes of the collecting tube play the most important part in the data collection. Comparison is made about the performance between round holes and diamond holes using FLUENT, we get the result that the diamond holes have a better collecting effects and a higher collecting accuracy.

Design of Air-Lock Valve of the Mesh Roller-Type Unginned Cotton and Film Remnant Separator

Air-lock valve is an important part of the mesh roller-type unginned cotton and film remnant separator. To improve the structure of the air-lock valve, the cotton flow condition in the separator was analyzed by using high speed imaging technology firstly. Then friction coefficient between unginned cotton and mesh roller was tested by experiment. Meanwhile, some parameters of the air-lock valve were obtained by analyzing different phenomenons that are blockings in the air-lock valve during running of the separator. Finally, the validation test was done, the results indicate that the improved air-lock valve is more reasonable than before, and the blocking can be avoided successfully.

The Design of Hydraulic Vibratory Fruit-Vine Separation System for Processing Tomato

Fruit-vine separation devices of processing tomato are being used for self-propelled tomato harvesters, while the traditional eccentric block-type processing tomato fruit-vine separation devices are structurally complex and requiring the assembly of high precision. In order to improve the fruit-vine vibration separation system, the parameters of the operating conditions of 4FZ-30 self-propelled processing tomato harvest machine eccentric separation devices as well as other models with hydraulic system both at home and abroad have been analyzed, meanwhile the full hydraulic vibration system for the tomato processing separation of the fruit-vine have been studied and designed. The result show that this hydraulic system can match the control system and work normally and reliably, which has laid the theoretical foundation for the improvement of devices of the tomato processing fruit-vine separation.

Analysis on Actuating Mechanism for Tomato Color Sorting Robot Based on High-Speed Photography

To separate objects (immature tomatoes, foreign material) accurately from tomatoes using actuating mechanism of tomato color grading robot, high-speed photography was used to acquire images the tomato sorting process for studying effect between tomato cast position and track for separating. Test results show that tomatoes cast position affects tomato sorting; tomato track from conveyer belt affects the hitting position of pneumatic ejection finger directly. High-speed photography is used for tomatoes sorting process analysis at high speed, which can be helpful for design of tomato color sorting robot.