China’s export of sewing machinesstarted in the 1950s.At that time theButterfly brand household sewingmachine produced by the Shanghai XiechangSewing Machine Factory and the Tiger brandsewing machine produced by the ...China’s export of sewing machinesstarted in the 1950s.At that time theButterfly brand household sewingmachine produced by the Shanghai XiechangSewing Machine Factory and the Tiger brandsewing machine produced by the ShanghaiHuigong Sewing Machine Factory enjoyeda good reputation in Southeast Asia. Along with China’s reform and openingdrive and economic development,and on thebasis of changes in market demand,thesewing machine industry has conducted rapidadjustment to the product structure,withmore stress being placed on technicalintroduction and renovation.Under theleadership an support of the Ministry ofLight Industry,products have developed fromhousehold sewing machines to Industrialones.While meeting the domestic展开更多
The article presents a structural diagram and the principle of operation of the installation of a sewing machine for applying a polymer composition to the stitch lines of tarpaulin materials. The calculation schemes a...The article presents a structural diagram and the principle of operation of the installation of a sewing machine for applying a polymer composition to the stitch lines of tarpaulin materials. The calculation schemes and the mathematical model of oscillations of the axis of the composite roller during the application of the polymer composition along the lines of tarpaulin materials are presented. Based on the numerical solution of the problem, the regularities of roller oscillations are presented. The main parameters of the system are substantiated.展开更多
文摘China’s export of sewing machinesstarted in the 1950s.At that time theButterfly brand household sewingmachine produced by the Shanghai XiechangSewing Machine Factory and the Tiger brandsewing machine produced by the ShanghaiHuigong Sewing Machine Factory enjoyeda good reputation in Southeast Asia. Along with China’s reform and openingdrive and economic development,and on thebasis of changes in market demand,thesewing machine industry has conducted rapidadjustment to the product structure,withmore stress being placed on technicalintroduction and renovation.Under theleadership an support of the Ministry ofLight Industry,products have developed fromhousehold sewing machines to Industrialones.While meeting the domestic
文摘The article presents a structural diagram and the principle of operation of the installation of a sewing machine for applying a polymer composition to the stitch lines of tarpaulin materials. The calculation schemes and the mathematical model of oscillations of the axis of the composite roller during the application of the polymer composition along the lines of tarpaulin materials are presented. Based on the numerical solution of the problem, the regularities of roller oscillations are presented. The main parameters of the system are substantiated.
