白鲢气动式机械去头方法研究

Freshwater fish pneumatic machinery to head-cutting method research

淡水鱼鱼体去头加工是淡水鱼工业化前处理加工过程中的重要内容,鱼体去头加工的效果直接影响并制约着后期深加工产品的质量。以白鲢作为研究对象,提出一种利用气缸带动仿形去头刀具进行鱼体机械去头加工的方法,设计并研制了仿形结构刀具以及气动式机械去头机样机,以白鲢鱼体去头加工过程中的采肉率、去头率以及切断面评分为主要评价指标,对影响白鲢气动式机械去头机样机性能参数的鱼体头部定位距离、鱼体背部定位距离、刀具仿形结构、工作气压等关键因素进行试验分析,探究各因素的变化规律,并设计正交试验对各因素的最优组合进行研究,通过正交试验可知:对去头机去头效果的影响从大到小依次为:鱼体头部定位距离>刀具仿形结构>鱼体背部定位距离>误差。综合评价分析结果显示:淡水鱼气动式去头机去头工作时,将鱼体水平放置,鱼体头部定位距离为107mm,鱼体背部定位距离为55mm,并采用厚度为2mm的弧刃U型刀进行切割时去头效果最好,该条件下鱼体去头采肉率为76.8%,去头率为90.6%。

Freshwater fish head before processing as a freshwater fish processing a difficult point in the process of automated processing,to head the processing effect directly affects and restricts the freshwater fish late deep processing of the quality of the products.This paper presents A use of pneumatic cylinders contour design tool for freshwater fish mechanical processing way to head,is designed and developed A pneumatic head machine prototype,to go head machine prototype meat rate and recovery rate of head as the main performance indexes,performance parameters affecting the freshwater fish head machine prototype of fish head positioning distance,the back of the fish body position distance,tool shape structure,the working pressure,etc.The key factor to determine the test index and orthogonal experiment design and analysis,it is concluded that：to go head to head machine effect from large to small in the order：A fish head positioning distance 〉C cutter contour structure 〉B 〉fish back positioning distance D error.Comprehensive evaluation of the results of the analysis shows that：freshwater fish go pneumatic head machine head work,put the fish body horizontal,fish head positioning distance is 107 mm,the back of the fish body positioning distance is55 mm,and the thickness of 2 mm of u-shaped arc blade knife cutting head effect is best,at this time the fish head meat at a rate of76.8%,to head a rate of 90.6%.