公开(公告)号：US4805434A

公开(公告)日：1989-02-21

申请号：US85275

申请日：1987-08-10

申请人： Karl-Heinz Komp ,  Bruno Walczak

发明人： Karl-Heinz Komp ,  Bruno Walczak

IPC分类号： B21C1/16 ,  B21C1/20 ,  B21C1/34 ,  B21C49/00 ,  B21C1/04

CPC分类号： B21C49/00 ,  B21C1/20 ,  B21C1/34

摘要： Method of straight-line drawing for reducing the cross section of round material, tubing, solid and hollow profiles in at least two drawing stages, which includes feeding material to be drawn with a leading end to a first drawing machine for a first drawing stage, feeding the material to be drawn with the leading end in a straight line downstream of the first drawing machine. Subsequently the material to be drawn is fed with the leading end to at least one second drawing machine having a linearly movable intermittently operable drawing carriage operating at a discontinuous speed at the beginning of the drawing while said first drawing machine is already operating continuously, being disposed downstream of the straight line for at least one second drawing stage. Next, the material to be drawn from the straight line upstream of the second drawing machine is deflected as soon as the leading end of the material to be drawn has reached the second drawing machine, and the length of the deflected material is varied for equalizing differences in feeding speed between said first and second machine.

摘要翻译： 用于减少至少两个拉伸阶段中的圆形材料，管材，实心和中空型材的横截面的直线拉伸方法，其包括将用前端引导的材料供给到用于第一拉伸阶段的第一拉丝机， 将第一拉丝机下游的直线的引导端进给到被拉伸材料。 随后将待拉伸材料的前端送至至少一个第二拉丝机，该拉丝机具有直线运动的可间歇操作的拉伸托架，其在拉伸开始时以不连续的速度工作，而所述第一拉丝机已经连续地运转， 在直线的下游至少一个第二拉伸阶段。 接下来，一旦待拉制材料的前端到达第二拉丝机，则从第二拉丝机上游的直线拉出的材料就会偏转，并且改变偏转材料的长度以均衡差异 在所述第一和第二机器之间的进给速度。

公开(公告)号：US4962658A

公开(公告)日：1990-10-16

申请号：US387861

申请日：1989-07-31

申请人： Karl-Heinz Komp

发明人： Karl-Heinz Komp

IPC分类号： B21C1/22 ,  B21C1/24 ,  B21C1/32 ,  B21C3/16

CPC分类号： B21C1/32 ,  B21C1/24

摘要： Pipes are straight drawn for reducing the pipe diameter and the pipe wall thickness. The drawing is performed intermittently through a plurality of drawing stages, each including a drawing plate having a drawing nozzle or opening through which the pipe must pass. Individual, separate drawing mandrel sections forming a set and corresponding in number to the plurality of drawing plates, are inserted in proper sequence into the pipe to be drawn. The insertion is such that the mandrel sections are located, prior to the begin of the drawing operation, between a pulling end of the pipe and a first dent. The smaller diameter mandrel sections first pass through the hole in the drawing plate and only the largest dimeter mandrel section is held in place by the first drawing plate for squeezing the pipe through that drawing plate. The smaller diameter mandrel sections travel along with the pipe as it is being drawn through the plates one after the other, whereby each plate keeps its respective mandrel section in place. A denting tool is so positioned and arranged for cooperation with the drawing tool that further dents are formed in the pipe close to, but behind the last mandrel section that passed through the nearest nozzle or drawing plate. Thus, the next dent is formed in a pipe portion which has already a reduced wall thickness while any hollow drawing is minimized. Thus, each drawing plate cooperates with its own independent mandrel section and with its own denting mechanism. At least one denting mechanism is arranged downstream of each drawing plate as viewed in the drawing direction of the pipe.

摘要翻译： 管道直线拉伸以减小管道直径和管壁厚度。 通过多个拉伸阶段间歇地进行拉伸，每个拉伸阶段包括具有拉丝喷嘴或拉管必须经过的开口的拉拔板。 形成组合并且相应于多个绘图板的单独的分开的拉伸心轴部分以适当的顺序插入待拉出的管中。 插入是这样的，心轴部分在开始绘图操作之前位于管的拉动端和第一凹陷之间。 较小直径的心轴部分首先穿过拉伸板中的孔，并且仅最大的两个心轴部分通过第一拉伸板保持在适当位置，以通过该拉伸板挤压管。 较小直径的心轴部分随着管道一起一个接一个地沿着板材一起移动，由此每个板将其相应的心轴部分保持在适当的位置。 凹陷工具被定位和布置成与绘图工具配合，使得进一步的凹痕形成在靠近但在通过最近的喷嘴或绘图板的最后一个心轴部分之后的管中。 因此，下一个凹陷形成在已经具有减小的壁厚的管部分中，而任何中空的图形被最小化。 因此，每个拉伸板与其自身的独立心轴部分和其自身的凹陷机构协作。 当从管道的拉拔方向看时，至少一个凹陷机构设置在每个拉板的下游。