公开(公告)号：US4680833A

公开(公告)日：1987-07-21

申请号：US861497

申请日：1986-05-09

申请人： Dinko A. Bahov ,  Hristo A. Bahov

发明人： Dinko A. Bahov ,  Hristo A. Bahov

IPC分类号： D01H5/26 ,  D01H5/86

CPC分类号： D01H5/26

摘要： A drafting apparatus for roving or sliver, designed for high speed pneumatic spinning machines. The drafting apparatus comprises inlet and outlet drawing pairs of rollers as well as pair of endless aprons. The upper drawing roller of the outgoing drawing pair of rollers is offset angularly about the axis of the lower drawing roller, towards the closest pair of endless aprons. The angle of offset of the upper drawing roller is from 15.degree. up to 65.degree.. The advantage of the drawing apparatus according to the invention is that impairment of the roving by the air flow around the outgoing pair of drawing rollers is avoided because of the offset of the upper drawing roller about the axis of the lower drawing roller towards the drawing aprons.

摘要翻译： 用于高速气动纺纱机的粗纱或纱条牵伸装置。 牵伸装置包括入口和出口拉拔对以及一对无边围裙。 输出拉伸辊对的上拉辊相对于下拉辊的轴线成角度地偏移到最接近的一对无边皮圈。 上拉辊的偏移角为15°至65°。 根据本发明的拉伸装置的优点在于，由于上拉丝辊绕下拉丝辊的轴线偏向牵引罗纹，所以避免了由引出对的一对牵引辊引起的气流对粗纱的损伤 。

公开(公告)号：US4689948A

公开(公告)日：1987-09-01

申请号：US861496

申请日：1986-05-09

申请人： Dinko A. Bahov ,  Hristo A. Bahov

发明人： Dinko A. Bahov ,  Hristo A. Bahov

IPC分类号： D01H1/00 ,  D01H1/115 ,  D01H4/02 ,  D01H7/92 ,  D01H5/28 ,  D02G1/04

CPC分类号： D01H1/115 ,  D01H4/02

摘要： The present invention relates to a vortex air nozzle for yarn spinning from staple fibers, comprising an outgoing pair of drawing rollers, next to which is located an inlet chamber for the formation of free tails of fibers, with decreasing flat cross-section and inner grooved channels, ending with a cylindrical part, connected to the outgoing twisting chamber, supplied with tangential channels for air feeding, wherein in the inlet chamber for the formation of the free tails of fibers. The grooved channels are laterally formed in a drawing plane and reach the cylindrical outgoing part, as in the inlet chamber enters part of the circumferential surface of the lower drawing roller, as the cylindrical outgoing part is enveloped by the outgoing twisting chamber, which tangential openings are concentrically formed above the said cylindrical outlet part. The advantages of the present invention are that a sufficiently large number of free tails is created, and a control is ensured, up to the achievement of the false twist, and the fibers are strongly twisted by a potential vortex.

摘要翻译： 本发明涉及一种用于从短纤维纺丝的涡流空气喷嘴，其包括一对出口的一对拉伸辊，其旁边设有用于形成纤维自由尾部的入口室，并且具有减小的平坦横截面和内槽 通道，以圆柱形部分结尾，连接到出口扭转室，供应有用于进气的切向通道，其中在入口室中形成纤维的自由尾部。 沟槽通道在拉伸平面中横向形成并到达圆柱形出口部分，如入口室进入下拉辊的圆周表面的一部分，因为圆柱形出口部分被出口扭转室包围，该切向开口 同心地形成在所述圆柱形出口部分上方。 本发明的优点是产生足够大量的自由尾部，并且确保了控制，直到实现假捻，并且纤维被潜在的涡旋强烈扭转。