Research On The Regulation Of Automatic Orientation Of Ovoid Fruit’s Pointed End And Blunted End

Ovoid fruit is a kind of fruit have the cent of size head, special shape. At present,the fruit that sells on the market have poor beautiful degree of sales fruit, low efficiency of processing and packaging and low overall quality. To improve the quality of products, enhance product market competitiveness. Fruit orientation is the key to the fruit before testing sizing processing working procedure, Therefore, this article adopts automatic orientation technology with the dividing-turnover type of eggs to ovoid fruit, such as avocado, korla fragrant pear, gannan navel oranges and loquat. The regulations of automatic orientation motion of pointed end and blunt end were discussed and the fundamental characteristic parameters of fruit were separately measured. The single factor experiments of axial motion and turnover motion on avocado, korla fragrant pear, gannan navel oranges, loquat and the Orthogonal experiment of avocado automatic orientation were performed on comprehensive test of pointed end and blunt end of ovoid agricultural automatic orientation. The parameters of axial movement and turnover movement of four fruits were analyzed. The experimental results showed that:The automatic orientation technology with the dividing-turnover type of eggs is feasible for ovoid fruit. The axial motion of avocado accords with the theory of the friction wheel drive with alternating axis, and the turnover motion accords with the transmission principle of cam, which belongs to the regulation of automatic orientation motion. The theoretical calculation methods of axial and turnover movement of avocados were established.The effects of convey roller material on parameters of avocado automatic orientation were not obvious, the horizontal deflection angle positively correlated with the diameter of convey rollers, but negatively correlated with the convey roller spacing, the rotational velocity of convey rollers; The displacement of the axial motion negatively correlated with the convey roller spacing, but positively correlated with the rotational velocity of convey rollers. The effects of the diameter of convey rollers and the velocity on turnover motion were not obvious, the rolling distance, the distance of guide rod and the side-slip angle negatively correlated with the spacing between convey rollers, but positively correlated with the bending angle of guide rod. The optimal parameters for device were determined: the convey material was nylon, the diameter of convey roller was 40 mm, the spacing between convey rollers was 30 mm, the velocity of convey roller rotation was 70 mm/s, and the bending angle of the guide rod was 30°.The axial displacement and the side-slip of Korla fragrant pear on nilong were larger; the axial displacement、the horizontal deflection angle negatively correlated with the diameter of convey rollers and the spacing between conveyor rollers, but positively correlated with the rotational velocity of convey rollers; the side-slip angle negatively correlated with the diameter of convey rollers and the spacing between conveyor rollers, but positively correlated with the convey velocity; the rolling distance, the distance of guide rod negatively correlated with the spacing between conveyor rollers,but positively correlated with the bending angle of guide rod. The optimal parameters for device were determined: the convey material was nylon, the diameter of convey roller was 40 mm, the spacing between convey rollers was 15 mm, the velocity of convey roller rotation was 70 mm/s, and the bending angle of the guide rod was 30°.The side-slip angle of the Ovoid gannan navel orange was larger on the carbon steel, the other parameters were constant at different convey material. The horizontal deflection angle negatively correlated with the diameter of convey rollers and the spacing between conveyor rollers, the axial displacement negatively correlated with the diameter of convey rollers and the spacing between conveyor rollers, but positively correlated with the rotational velocity of convey rollers; the side-slip angle positively correlated with the convey velocity, but positively correlated with the diameter of convey rollers and the bending angle of guide rod. The optimal parameters for device were determined: the convey material was nylon, the diameter of convey roller was 30 mm, the spacing between convey rollers was 30 mm, the velocity of convey roller rotation was 70 mm/s, and the bending angle of the guide rod was 30°.The axial displacement of Ovoid loquat positively correlated with the diameter of convey rollers、the rotational velocity of convey rollers, but negatively correlated with the spacing between conveyor rollers; the horizontal deflection angle positively correlated with the diameter of convey rollers, but negatively correlated with the spacing between conveyor rollers、the rotational velocity of convey rollers; the side-slip angle negatively correlated with the diameter of convey rollers、the spacing between conveyor rollers; positively correlated with the convey velocity、the bending angle of the guide rod. The optimal parameters for device were determined: the convey material was nylon, the diameter of convey roller was 40 mm, the spacing between convey rollers was 20 mm, the velocity of convey roller rotation was 70 mm/s, and the bending angle of the guide rod was 30°.