ラッキョウ調製機に関する研究　ＩＩ

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タイトル別名
  • Studies on the Processing Device of Baker's Garlic (II)
  • ラッキョウ チョウセイキ ニカンスルケンキュウ 2

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For mechanizing the post harvest processing of Baker's garlic an experimental device (No. 2), which could vary the cutting length corresponding to the bulb diameter of Baker's garlic for two steps, was designed and built.<br>The most suitable clip velocity was sought comparing with the known conventional method by which an experienced operator was able to set the Baker's garlic on the moving clips efficiently and accurately.<br>Measurements were made on the effect of the adhesion of Polysacharides on the rotary knives and cutting weight upon the cutting resistance.<br>The results obtained in the experiments are summarized as follows.<br>1. It seemed that the most suitable clip velocity was about 5cm/s and the mean values of the efficiency and the accuracy were 40 bulbs/min and 70% respectively.<br>Yet the mean values of the efficiency and the accuracy by the conventional method were 53 bulbs/min and 91% each.<br>2. The efficiency of the conventional method measured by motion analysis increased with increase in the number of the processing bulbs per cycle from 1 to 3.5. The required time of working element ⌈B⌋ increased from 1.1 to 1.4 second. The relation between the increase of the efficiency and the decrease of the accuracy for the cutting work was not recognized.<br>3. The efficiency of the processing device increased with decrease in the required time of working element ⌈B′⌋.<br>The accuracy had a tendency to decrease with increase of the efficiency, because the working element ⌈B′⌋ included the motion of the position control to the guide plate attached the moving clip.<br>4. It is further suggested to develop the clip shape for putting two bulbs in one clip and to simplify Baker's garlic position control for the improvement of the efficiency and accuracy of the processing device.<br>5. The dry Polysacharides attached to rotary knives increased the mean torque per unit cutting area of Baker's garlic by the effect of friction resistance, but the torque was not affected by the wet Polysacharides.<br>6. The adhesion weight attached to the rotary knives at the stalks and the roots side were respectively 0.83g and 1.43g, after cutting 11.8kg of Baker's garlic.

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