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公开(公告)号：US4014640A
公开(公告)日：1977-03-29
申请号：US622814
申请日：1975-10-16
CPC分类号： B29C31/002 , B29B13/025 , B29C57/02 , B29C35/045 , B29L2023/22
摘要： A machine for removing a precut length of plastic pipe from an extrusion line, providing a bell on one end thereof, and providing a chamfer on the opposite end thereof. The pipe is received in a V-shaped trough along which it is longitudinally moved as it is delivered from the extruder. At predetermined intervals, a plurality of hydraulic pushers are actuated to move the pipe laterally from the trough onto a conveyor. The conveyor is indexed to a first position in which the axial location of the pipe is corrected and the end to be belled is heated. In a predetermined sequence of events, the conveyor is then indexed to a second position in which a belling plug is inserted into the heated end of the pipe; simultaneously, the opposite end of the pipe may be provided with an internal or external chamfer. When the conveyor is again indexed, the pipe is deposited onto a suitable system so that it may be conveyed to a shipping point.
摘要翻译： 一种用于从挤出生产线上去除塑料管的预切长度的机器，在其一端提供一个钟形，并在其另一端提供倒角。 管被容纳在V形槽中，当从挤出机输送时，管沿其沿纵向移动。 以预定间隔，多个液压推动器被致动以将管道从槽侧向移动到输送机上。 输送机被转位到第一位置，在第一位置，管道的轴向位置被校正，并且要被罩住的端部被加热。 在预定的事件顺序中，输送机然后被转位到第二位置，在第二位置中，一个鼓环塞被插入管的加热端; 同时，管的相对端可以设置有内部或外部倒角。 当输送机再次被分度时，管被沉积到合适的系统上，使得它可以被输送到运输点。
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公开(公告)号：US4059379A
公开(公告)日：1977-11-22
申请号：US717874
申请日：1976-08-26
CPC分类号： B29C31/002 , B29C57/02 , Y10S425/218
摘要： Plastic pipe is belled under pressure by inserting what is, in effect, a telescoping mandrel into a heat-softened pipe end with great axial force immediately after two mold halves with cavities defining the desired bell configurations have been brought together under pressure. The softened pipe end is not only expanded to a bell configuration by the mandrel, but is compressed by the radial annular end wall of a sleeve which slides axially over the mandrel into the spacing between the mandrel and the mold halves defining the bell-shaped cavity. Thereby, not only may the heat-softened pipe end be molded to assume an exact configuration to a high degree of tolerance, but the normal thinning of the walls of the pipe end which occurs with its belling may be re-thickened by the axial compression of the sleeve to the original pipe wall thickness. After such radial expansion and axial compression of the heat-softened pipe end to the precise bell shape and tolerance, the mold halves are first cooled, the sleeve is first withdrawn axially, then the mandrel is withdrawn, and lastly the mold halves are separated to permit the belled pipe to be removed.Apparatus is provided to accomplish this process by bringing the mold halves together under great pressure followed by the axial movement into the pipe end of the mandrel and its axially compressing sleeve.
摘要翻译： 塑料管在压力下通过将具有实际意义的伸缩式心轴插入到具有大的轴向力的热软化管端中立即在限定所需钟形结构的腔体的两个半模已经在压力下汇合在一起之后立即被压住。 软化的管端不仅通过心轴膨胀成钟形结构，而且被套筒的径向环形端壁压缩，其轴向滑过心轴，进入心轴和限定钟形腔的半模之间的间隔 。 因此，不仅可以将热软化的管端模制成具有高度公差的精确构造，而且可以通过轴向压缩来重新加厚其端部发生的管端壁的正常变薄 的套管到原管壁厚度。 在将这种热软化的管端径向膨胀和轴向压缩到精确的钟形和公差之后，首先将半模冷却，首先将套筒轴向退回，然后取出心轴，最后将半模分开 允许将管道拆除。
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公开(公告)号：US4243228A
公开(公告)日：1981-01-06
申请号：US949393
申请日：1978-10-06
申请人： Joseph Marcella
发明人： Joseph Marcella
摘要： A remotely-perceptible, impact-indicating target for a projectile, such as a bullet or the like, constructed so as to remotely perceptibly indicate, to a target shooter at a projectile shooting location, the impact of a shot or fired projectile or bullet on a remotely located target in a manner clearly visibly perceptibly indicating not only the hit, but the impact location of the projectile or bullet on the target, by causing the effective expansion in an explosion-simulating manner of a quantity of visibly perceptible target material.
摘要翻译： 对于诸如子弹等的射弹的远程可察觉的冲击指示目标，被构造成远程地在射弹射击位置向射击者指示射击或射击的射弹或子弹的影响 通过以爆炸模拟方式有效地扩展一定数量的可见感知的目标材料，以清晰可见的方式明显地可感知地指示射出物或子弹对目标的撞击位置的方式的远程定位目标。
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