Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Daiwa Boseki Kabushiki Kaisha

Kabushiki Kaisha Toyota Jidoshokki

Kabushiki Kaisha Toyota Chuo Kenkyusho

Daido Tokushuko Kabushiki Kaisha

Toyoda Automatic Loom Works, Ltd.

Daiwa Spinning Co., Ltd.

Yoshihisa Suzuki

Yoshiharu Yasui

Kazuo Seiki

Shozo Ueda

Meiji Anahara

Takashi Kato

Tsutomu Miyazaki

Shigeru Takasu

Susumu Kawabata

Toshio Yoshizawa

Hiroshi Omori

Mitsuo Mori

Mitsunori Horiuchi

Osamu Suzuki

Shinobu Takagi

Junzo Hasegawa

Keiji Onoue

Shigeru Muramatsu

Masaki Shinkawa

Hiroaki Yoshida

Yasushi Kaneta

Hiroshi Niimi

Toshio Morishita

Haruyoshi Nakamura

Toshinori Taniguchi

Ichiro Tashiro

Hisao Amano

Katuaki Sugiura

Sigeru Takasu

A highly corrosion-resistant material and a corrosion-resistant member which are improved in corrosion resistance, adhesion, contact electrical resistance, electrical conductivity, airtightness, etc. and are suitable for use as, e.g., a metallic separator for polymer electrolyte fuel cells (PEFC); and a process for producing them. A thin noble-metal layer is formed on the desired part of the surface of a metallic base and then subjected to compression working. The coated base may further be subjected to anticorrosive treatment with a liquid phase containing a peroxide or ozone or with an active gas atmosphere.

Corrosion-resistant metallic member, metallic separator for fuel cell comprising the same, and process for production thereof

A method of yarn piecing in a fasciated yarn spinning unit is disclosed by which a yarn having a broken end and drawn out from the yarn package is introduced through the false-twisting nozzle by conducting an intermediate portion of the yarn into a slit which is formed on a lateral side of the nozzle and extends to the yarn passage channel in the nozzle. Because the yarn has been previously cut into a predetermined length thereof, the cut end of the yarn is placed in the drafting zone of the drafting mechanism at a position where the cut yarn end overlaps a broken end of the fiber bundle. By restarting the spinning operation, the overlapping ends of the yarn and fiber bundle are drafted properly in the drafting zone and then the fibers in the overlapping ends are intermingled by the false-twisting effect of the rotary stream of jetted air while they are advanced through the false-twisting nozzle.

Method and apparatus for yarn piecing in a fasciated yarn spinning unit

A drafting device for a spinning machine, in which a plurality of loading devices for top rollers is provided, by which each top roller is held in a weighting arm in such a state as being displaceable independently from the other roller without disturbing the drafting operation of the other rollers. By this, a yarn piecing operation in a fasciated yarn spinning system can easily be carried out.

Drafting means for textile machine such as spinning machine

A novel method for yarn piecing in a fasciated yarn spinning unit, in which a broken end of a yarn and the fiber bundle to be pieced together are nipped and intermingled with each other between a soft nipping area between middle top and bottom aprons and thereafter are false-twisted by a vortex in an air nozzle. Motions of the associated parts are controlled as so to be able to achieve a suitable overlapping length of the yarn and the fiber bundle in the nipping area of the aprons.

Method for yarn piecing in fasciated yarn spinning unit

A bottom tenser utilized for a drafting means of a spinning frame, especially for fasciated yarn spinning, in which a fiber bundle is attenuated at a high speed exceeding 100 m/min. The bottom tenser as well as a bottom roller corresponding to the tenser is provided with a free end through which an apron is easily removable from and mountable on the tenser and the roller. The tenser may be constituted by a body and at least a guide wall movable relative to the body. The guide wall prevents lateral movement of the apron in its operative position and, in turn, is displaced or removed from the body in its non-operative position so as not to obstruct an apron exchanging operation.

Easily displaceable bottom tenser

A novel weighting device for draft rollers, in which a diaphragm is provided, as a pressing unit, above each top side roller. The diaphragms provided on a spinning frame are classified into a plurality of groups corresponding to species of rollers such as front rollers, middle rollers, and back rollers. Each group of diaphragms has common piping having a regulator for air pressure and branched to the diaphragms belonging to the group. One end of the piping is connected to a common high pressure air source, from which air of a uniform pressure controlled by the regulator is supplied to the diaphragms belonging to the group. Since a weighting force onto a top side roller is a function of a air pressure supplied to the diaphragm, it can be changed or diminished at once in a centralized manner by adjusting the regulator. Therefore, troublesome adjustment of individual pressing units is unnecessary.

Weighting device for drafting means

In the piecing operation, the broken ends of a yarn and a fiber bundle are sucked into a suction nozzle, and therein are entangled due to twists imparted to the fiber bundle by first vortices utilized for forming a fasciated yarn. The broken end of the yarn may be twisted in reverse of the fiber bundle by second vortices. Further, third vortices weaker than the first vortices may be used instead of the first vortices. The apparatus comprises jets for generating the second and third vortices and piping for transporting air to the jets and from the suction nozzle, as well as a control circuit thereof.

Method and apparatus for yarn piecing in fasciated yarn spinning

A textile fiber drafting apparatus is disclosed, according to which the drafting bottom rollers in each line along the spinning units of a spinning frame are arranged in such a way that each two adjacently juxtaposed bottom rollers make a single block for each two spinning units, so that each bottom roller has an open, free end through which an apron may be replaced with a new one or fibers entangled on the roller may be removed with extreme ease. Between each such two spinning units is provided an arrangement for driving the bottom rollers thus disposed, including driving and driven mechanisms.

Drafting apparatus in a spinning frame

A drafting arrangement including a collector means suitably utilized for fasciated yarn spinning. The collector means in the shape of a hollow shell is disposed between a preceding draft means such as a pair of front rollers and the post draft means such as a pair of a aprons, in such a manner that a front surface of the collector means confronts a rearward surface of the preceding draft means and, on the other hand, a rear surface of the collector means confronts a front surface of the post draft means with a predetermined clearance. By this construction, a concomitant air stream accompanying rotation of the draft means is effectively expelled out of the fiber passage and stable drafting can be accomplished.

Fiber drafting arrangement

A novel fiber drafting system is disclosed, according to which fibers of sliver supplied continuously are passed through a first pair of rotatable cooperating rollers while being pressed and compacted into a reduced section by and between a space formed by a groove and a projection formed respectively in and on the circumferential peripheries of the rollers of said first pair. The sliver thus compacted is then transferred to and held by and between a second pair of rollers rotated at a higher peripheral speed than the first pair of rollers, whereby the fibers of sliver are drafted successively between the two pairs of rollers without use of conventional aprons for guiding and supporting the fibers in the drafting zone.

Method and apparatus for textile fiber drafting

A fiber strand delivered to a draft zone between a pair of back rollers and a pair of front rollers is introduced into a passage formed through a fiber strand guide device. On the way of the passage, floating fibers contained in the fiber strand are controlled by means of a fluid stream jetted to a back surface of the fiber strand to press the fiber strand onto an inner wall of the passage as well as forward it towards the front rollers. A pressing plate may be cooperatively utilized with the fluid stream. Accordingly regular drafting is attained.

Method and apparatus for drafting fiber strands

A false-twist nozzle with an improved structure is provided herein. The false-twist nozzle according to the invention comprises a housing having a large-diameter yarn passage portion and an insert member having a small-diameter yarn passage portion and a fluid conduit hole. When the insert member is within the housing, a complete yarn passage hole is formed through the nozzle. Because the insert member is separable from the housing, drilling of the very small diameter fluid conduit hole can be made easily and accurately prior to insertion within the housing. Furthermore, the fluid conduit opening is disposed both annularly and angularly in the downstream direction with respect to the yarn passage hole, thereby increasing the twisting action induced by the flow of jetted fluid while preventing damage to the yarn.

False-twist nozzle

A spinning apparatus for a fasciated yarn is provided which comprises a fiber-opening means provided with a combing roller, a fiber-collecting means including an inlet member and a rotor, a twist-imparting means consisting of an air nozzle, and a yarn take-up means. A sliver opened by the combing roller is fed to the interior of the rotor through the inlet member. Since the rotor and the inlet member rotate reversely to each other, the fibers are evenly distributed on an inner surface of the rotor. An intermediate yarn drawn out from the rotor is supplied to the air nozzle under an overfeeding condition, whereby a good fasciating effect is imparted to the resultant yarn by a vortex. Prior to feeding the yarn to the air nozzle, the yarn may be drafted between two pairs of rollers. The apparatus is easy to maintain because a roller drafting means having an apron which rapidly wears due to high-speed processing is not utilized.

Apparatus for spinning fasciated yarn

A method and apparatus for spinning a modified fasciated yarn at a high production rate featuring a combination of open-end spinning and fasciated yarn spinning. A sliver is opened by a combing roller and deposited as a fiber layer on a fiber collecting surface of a drum rotor rotating at a high speed. Thereafter, the fiber layer is drawn off from the fiber collecting surface as a continuous fiber bundle by a central rotor rotating coaxially with the drum rotor at a faster speed. During the drawing-off operation, the fiber bundle is flattened to a ribbon form by making contact to a deflector and is subjected to a vortex within an air twisting nozzle mounted on the central rotor to form a resultant yarn. According to the present invention, high production rate can be obtained because a roller drafting system having aprons can be omitted.

Method and apparatus for fasciated yarn spinning

An air nozzle, suitable for producing a fasciated yarn, having at least one jet in each of narrow and wide passages along the traveling direction of the fiber bundle. Each jet is directed to generate a vortex whirling reversely from that of the other passage. The twist imparted to the fiber bundle by the vortex generated in the wide passage is restrained by the vortex whirling reversely thereto in the narrow passage. As a result, circumferential fibers of the fiber bundle are less twisted relative to the core portion thereof. During the untwisting operation of the vortex of the wide passage, the circumferential fibers are entangled around the core portion with a twist corresponding to the difference from the core portion, thereby obtaining a well-fasciated yarn.

Growing community of inventors

Chiryu, Japan

Yoshihisa Suzuki