竹勺连续化自动成型装置的设计与试验

To address the problems of poor continuity,low efficiency and high manual effort in the traditional bamboo spoon forming process,based on the existing forming technology,the key structure and movement parameters such as the bamboo spoon hot press process,loading and unloading method and the number of single forming were improved and designed,and a multi-suction cup continuous loading whole hot press forming process was proposed,and a prototype bamboo spoon hot press forming machine was designed.Through the theoretical analysis of the heat transfer conditions of the bamboo spoon press,the arrangement of the bamboo spoon moulds was determined to be 16 x 3 under the condition that the press size is(713×537×56)mm,which means that 48 bamboo spoons can be formed in a single pass,increasing the processing efficiency by 128%compared to the traditional bamboo spoon heat press.The deformation of the suction cups was simulated using the ANSYS Workbench finite element method and the force on the bottom surface of the suction cups was analysed to determine a suction cup diameter of 5 mm and a suction cup force of 4.75N.It was verified that there was no deformation of the bamboo spoon under this suction force.The results showed that the moisture content of the bamboo spoon was 4.8%,the bending strength was 99.46MPa and the bending modulus was 5809.2MPa,which was 1.2%lower,17.0%higher and the bending modulus was 14.5%higher than that of the bamboo spoon processed by traditional head hot pressing.The fracture characteristics were also analysed by electron microscopy,indicating that the bamboo spoon formed by the proposed integral hot pressing device has better service hardness and bending strength.