| Jellyfish has a unique nutritional value and medicinal efficacy,so it is deeply loved by consumers.After the dehydration of jellyfish skin shape are: flat and bowl-shaped.Usually bowl-shaped jellyfish is sold at home and abroad with jellyfish skin of uniform width.However,domestic shredding processing of bowl-shaped jellyfish is performed by workers using shearing scissors to cut silk,which results in labor intensity.Hand-cutting events occur from time to time,shredding efficiency and yield are low,resulting in a large waste of bowl-shaped jellyfish skin.This paper aims at the above processing production conditions,launched a bowl-shaped jellyfish spiral automatic cutting machine research and development.The main contents of this dissertation are as follows:(1)The shear force and texture test of the bowl-shaped jellyfish at different sampling radius positions were performed using a texture analyzer.The results showed that the sampling radius had the most significant influence on the shear force at the secondary outer ring and the middle ring2.The maximum shear force is 53.57 N.The effect on the hardness is most significant at the secondary outer ring and the outer rings.The maximum hardness is 145.81 N.The effect on the elasticity is most significant at the inner ring and the outer ring.The maximum elasticity is 0.81.The parameters measured by the above experiment provide a theoretical basis for the hydraulic cylinder selection and spiral cutter design of bowl-shaped jellyfish spiral automatic cutting machine.(2)According to the specifications of the bowl-shaped jellyfish skin and the technical specifications of the equipment,the overall design of the bowl-shaped jellyfish spiral automatic cutting machine was completed,including the feeding mechanism device,the cutting mechanism device and the electrical control device.In the structural design of the feeding mechanism device,a stepping motor is used to drive the rotation of the sprocket,which drives the chain to drag the feeding tray to complete the automatic feeding and feeding;at the same time,a tensioning mechanism is designed to avoid the chain from being delinked;the step motor selection and chain drive design is taken.In the structure design of the shredding mechanism device,the mathematical model of the edge line of the spiral cutting knife was introduced based on the theory of differential geometry,and the curvature and torsion of the edge of the spiral cutting knife were analyzed with the change of the polar angle using MATLAB to find the maximum bending and distortion.The position provides technical support for the spiral cutter reinforcement processing;the design of the stripping disc structure matched with the spiral cutter,one-time blanking can complete the cutting and stripping,and improves the cutting efficiency;hydraulic cylinder and hydraulic pressure Pump are performed selection design.(3)Using Solidworks15.0 software to complete the three-dimensional design of bowl-shaped jellyfish spiral automatic cutting machine,simulation assembly,motion simulation of the cutting mechanism device through the Motion plug-in function,through the simulation analysis can be seen without interference,verify The rationality of the structural design.(4)A mechanical model of the thread cutting process of a bowl-shaped jellyfish skin automatic cutting machine was established.Using ANSYS Workbench 15.0 software,the force condition of the screw cutter and the modal of the frame were simulated by finite element method,and the stress and strain states were analyzed.,From the calculation results to meet the structural design requirements.(5)The electrical control design of the bowl-shaped jellyfish spiral automatic cutting machine was completed,and the selection of relevant components was performed.Finished prototype production and commissioned production.The bowl-shaped jellyfish skin shreds through this device,the appearance quality is good,the waste product rate is significantly reduced,fully meets the design requirements. |
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