Design of cooked cocoon conveying device based on cocoon feeding trolley
Objective In recent years,the development of China's cocoon and silk industry has stagnated due to the lack of production equipment.In the process of raw silk processing,some problems exists,such as low degree of automation,high labor cost,untimely delivery of cocoons and unbalanced distribution in the transportation of cooked cocoons.Therefore,it is important to develop a device that can replace manual labor to facilitate automatic conveying of cooked cocoons.Method In order to solve the conveying problem of cooked cocoons and improve the production efficiency,an automatic conveying device for cooked cocoons was designed.By analyzing the convenional cocoon feeding method,the necessary conditions of the cocoon feeding process were obtained and analyzed.According to the theory of mechanical principles,the mechanism and device to replace the manual cocoon feeding action were designed.The feasibility and structural parameters of the device were determined by calculation and analysis.Results The automatic conveying device of cooked cocoon was mainly composed of cocoon feeding trolleys,sliding contact line,a fixed track,columns and side frames.The communication between the components of the device and the operation of the control device were carried out by programmable logic controller(PLC)controller.A conveying device with a set of PLC controller,equipped with N cocoon cart,together for 6 groups of automatic silk reeling machine was responsible for supplying cooked cocoon.According to the production process of the silk reeling workshop and the structural characteristics of the automatic conveying device,the operation flow of the automatic conveying device was formulated,including the operation logic of the cocoon feeding trolley.By comparing different power supply modes and transmission modes,the sliding contact line was selected as the power supply mode of the cocoon feeding trolley,and a motor was used as the driving part of the cocoon feeding trolley.The cocoon feeding trolley was mainly composed of a positioning mechanism,a collector driving mechanism,a running mechanism,a tipping bucket mechanism and a single-chip microcomputer controller.The parameters of the running mechanism of the cocoon feeding trolley were determined by calculation,and the functions of independent on-orbit operation,automatic loading and unloading of cooked cocoons and communication of the cocoon feeding trolley were realized.Finite element analysis of the stiffness and strength of the fixed track was carried out using ANSYS,and the stiffness and strength of the track were verified to be within the safe range.Conclusion The structure design of the automatic conveying device for cooked cocoon is proved reasonable.The design of the suspended track improves the utilization rate of the workshop space.The sliding contact line mobile power supply device can realize the whole process of continuous power supply for the cocoon cart.The design of the running mechanism of the polyamide fiber friction wheel improves the mobility of the cocoon cart.The structural design of the track reduces the length of the contact line between the polyamide fiber friction wheel and the track,and reduces the wear caused by the speed difference between the inside and outside of the polyamide fiber friction wheel during operation.The design of the positioning mechanism of the cocoon feeding trolley ensures the safety and stability of the cocoon feeding trolley running on the track.The cocoon feeding trolley can replace 6 cocoon feeding workers,thus improving production efficiency and reducing costs.Compared with the conventional way of sending cocoons,the automatic conveying device of cooked cocoons effectively solves the problems of untimely supply of cooked cocoons in the head position of automatic silk reeling machine and unbalanced distribution of cooked cocoons in different positions,and realizes the on-demand distribution and timely supply of cooked cocoons.
sliding contact linemobile power supplycook cocoonfriction drivesilk reelingcocoon feeding trolley