144 results about "Spin out" patented technology

A fastener includes a round, blind hole or pocket in its head. Installation and removal of the fastener is accomplished with a tool containing an eccentric segment on the end of a shaft. When rotated within the pocket, the eccentric segment displaces laterally relative to the shaft to provide a friction grip to the lateral wall of the pocket. The strength of the grip is proportional to the applied torque. Eccentric displacement allows rotation but prevents the tool from spinning out of the fastener thereby eliminating cam-out and surface damage resulting from contact with a spinning tool tip. The eccentric head of the tool can be made disposable and to shear off when a predetermined torque is reached. The smooth-sided round hole offers no purchase for commonly available tools; making the fastener tamper-resistance. In another embodiment, the fastener includes a raised portion in the pocket. A tool having a complementary opening shears off the raised portion at a predetermined torque.

The invention relates to a nano electrostatic spinning and staple fiber ring spinning integrated yarn forming method, and belongs to the technical field of textile processing. The method comprises the following steps: arranging an electrostatic spinning apparatus between each yarn guide hook of a ring spinning frame and a front roller jaw formed by a front roller corresponding to the yarn guide hook and a front rubber roll, enabling a receiving surface of the electrostatic spinning apparatus to stay on a same plane with a public tangential surface of a front leather roll and the front roller at the front roller jaw, forming an electrostatic spinning area between an electrostatic spray head and a receiving surface of a receiving plate, and combining and twisting a nano fiber net spun out from the electrostatic spray head and staple fiber strands passing by the receiving surface of the receiving plate. According to the method, the electrostatic spinning and a conventional ring spinning are reasonably integrated, so that the high-speed successful production of nano fiber yarns is guaranteed, the naon fiber net effectively captures exposed fibers and improves the winding tightness, and the yarn forming structure and performance quality of the nano fiber wrapped blended yarns can be greatly improved. Equipment involved in the method is universal, and the operation and the use are convenient.

A spun yarn taking-off apparatus (100) for POY, wherein ten pieces of yarns (1) spun out from a spinning head (90) are fed from an upper side to a lower side through a yarn feed roller (10) for conveyance on a first stage and last yarn feed rollers (21) and (22) on a second stage and concurrently wrapped around ten bobbins (2) installed on one winder (30). These ten pieces of yarns (1) are distributed to the plurality of last feed rollers (21) and (22) in unit of five pieces and then divided into pieces and led to the bobbins (2). The total circumferential lengths of the yarns (1) applied to the last yarn feed rollers (21) and (22) are the same.

The invention aims to provide a spinning winding device which, by inhibiting temperature drop of a fiber bundle in a path from a cooling device to a heating stretching device and enabling the temperature of the fiber bundle in front of the heating stretching device to be higher than before, can shorten contact time with a heating roller and contact length required by heating the fiber bundle to above a specified temperature (glass transition point temperature). Specifically, the spinning winding device includes a spinning device which spins out a plurality of fiber bundles from fused material, a cooling device for fiber bundles spinned out by an air cooling spinning device, a heating stretching device which heats at a downstream side of a traveling direction of the fiber bundles of the cooling device and stretches the fiber bundles, and a winding device which winds the fiber bundles at a downstream side of the traveling direction of the fiber bundles of the heating stretching device; and the spinning winding device has a traveling space for the fiber bundles to travel from the cooling device to in front of the heating stretching device, and an attemperator which guides air used by the cooling device for cooling the fiber bundles to inside the traveling space.

Disclosed is a two-roller flexible spinning technology applicable to steel plate welded wheels with grooves. Two mandrels provided with grooves identical with target workpieces and two spinning wheels complementary with single grooves are used, and belt wheel grooves are machined in a mode that the spinning wheels spin out of the grooves one by one from bottom to top. According to the two-roller flexible spinning technology, large equal-wall-thickness belt wheels can be machined conveniently, the adaptability is high, the machining range can be expanded without replacing the mandrels and the spinning wheels, and the working efficiency is high.

The invention relates to polyphenylene sulfide short fiber and a method for making the same, with the tensile strength thereof beyond 5cN / dtex and bending modulus of elasticity over 75%. The polyphenylene sulfide short fiber can be obtained by the steps of: fusing polyphenylene sulfide powder under the conditions of decompression and at a temperature less than 350 DEG C; drying the granulated particles under a temperature ranging from 130 to 170 DEG C for fusing; spinning out from a spinning nozzle; and cutting it into regulated length after stretching; collecting the fused polyphenylene spun out from the spinning nozzle without stretching for thermal stretching of over 3 times while less than four times; conducting thermal treatment at a temperature over 180 DEG C for over 4 seconds; endowing crimp to it in a curving box filled with steam of over 180 DEG C and cutting it into regulated length; and conducting loosing treatment before and after the thermal processing with regulated length, thus to making the loosing rate thereof ranging from 1% to 6% during the period after thermal stretching and before curving.

The invention provides a wheel design that incorporates both a shield and seal on both sides of the guide wheel to eliminate direct liquid pressure on the seal. By retaining the lubrication, bearing life is extended, dramatically reducing machine downtime. In the presently preferred embodiment, the combination of a guide wheel with two rubber spring return (RSR) seals in-bound of two shields, increases guide wheel life through the following: The shields prevent the direct force of a high pressure wash-down from reaching the seal directly. There is a non-direct path between the shield and the outer raceway of the guide wheel to allow any trapped liquid to seep back out of the guide wheel. Also, as the guide wheel rotates, any liquid between the shield and seal is spun-out by centrifugal force.