This invention relates to apparatus for opening and blending fiber from bales such as illustrated in U.S. Pat. Nos. 4,514,881, 4,595,149, 4,623,099, 4,715,722, 4,771,513, 4,774,758 and 4,780,933. Objects of the invention include increased opening or greater unentangling of the fibers with improved transport thereof in a suction channel.
The invention relates to an apparatus for opening fiber bales of spinning material, e.g. cotton, comprising two reducing means, e.g. milling rollers, disposed in mutually parallel relationship in a housing, the reduction of a bale or a row of bales being performed from the top. Between the milling disks of the rollers, there are provided grate rods which adjoin the bale surface and by which the reduction of the fiber material of the bales is supported. Above the gap formed by the reducing means, a suction channel provided for the removed fiber material may extend lengthwise of the reducing means.
There have been known various designs of opening devices of the foregoing type. In view of the rapidly rotating milling rollers used as a reducing means, it is often impossible to inhibit the entrainment of fiber clusters opened insufficiently so that the suction means not only receives disintegrated fibers but also a higher or lesser amount of fiber clusters.