Study On Design And Experiment Of Intermittent Shell-Breaking Machine For Walnut

The existing domestic and foreign representative of the walnut shell breaking machine has the disadvantages of large kernel rate, large loss of the kernel, and poor physical size of walnut varieties. In this paper, a new type of intermittent pneumatic lock breaking shell mechanism is studied. Its breaking shell rate is high, and large kernel ratio is large, and it is highly versatile for walnut varieties.This paper studied the overall design and working principle of the new shell breaking mechanism, the pneumatic system from the process requirements to the theory of stress analysis, and the optimal clamping pressure and rupture pressure by orthogonal test; Its working principle is to use the fixed end of the cylinder guide good walnut, the other end of the cylinder. The impact of the broken shell, walnut shell burst the shell and kernel taking aim. The design of control system, adopt the programmable logic controller, according to the requirement of process operation, accurate control of pneumatic cylinder moving time broken shell locking device, the locking action execution.This paper also relates to the whole structure of the machine design, elaborate design in many key working parts. Such as the semi closed type oriented of escort agencies, universal work cracking mechanism and the pneumatic system design have great results, so that the machine is much higher than the existing shell breaking machine effect. Escort agencies to ensure the orientation of walnut in the transport process of the course, not out of the conveying track; The versatility of the broken shell mechanism of pneumatic locking mechanism, and the traditional mechanical lock has the very big difference, the walnut shell struck the break in the axial clamping not retraction; The design of pneumatic system is on the basis of the machine work efficiency requirements, the selection of pneumatic components, pneumatic system, through the air pipe diameter selection and pressure drop calculation, finally achieve the intended to break the shell of the gas path system efficiency.In this paper, the machine shell breaking effect of the experimental parameters optimization, and provide a theoretical basis for the design of the machine to improve the work, clear the factors to influence the test indexes in multi index test, shelled, regression formula for different parameters to find the three main factors and the best combination of parameters.