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国内采用的机械自动送料冲孔模具,一般为各种类型的滚轴式自动送料结构。滚轴式自动送料结构适用于冲压孔距较大、板料宽度较窄的工件。在生产中常出现:板料剪切时留有毛刺;板料表面变形或粘有异物;冲压后出现毛刺等情况。同时,滚轴与板料只是两点接触,会导致送料步距不一,孔距大小不同,严重的会出现冲孔相互重叠现象。滚轴式送料,板料不能留出前后边缘,网板孔的排列是交错的,冲压后,前、后边缘不完整,达不到图纸要求。滚轴式自动送料模具,体积较大,占用空间大,噪音较大,结
Domestic use of mechanical automatic feeding punching die, generally various types of roller-type automatic feeding structure. Roller-type automatic feed structure for stamping hole spacing, sheet metal width narrow workpiece. Often appear in the production: leaving a glitch when the sheet is cut; sheet surface deformation or sticky foreign matter; Burr after stamping and so on. At the same time, the roller and the sheet material are only two points of contact, which will result in different feeding step sizes and different hole pitches, which may lead to serious overlapping of punching holes. Roller feed, the sheet can not be set out before and after the edge of the screen hole arrangement is staggered, after stamping, before and after the edge is not complete, can not meet the requirements of the drawings. Automatic feeding roller mold, larger, occupy a large space, noisy, knot