Abstract:
Method and apparatus for operating a corrugator wet end splicing of three short orders between a longer first order and a longer fifth order utilizes a primary splicer and a tandem splicer in which the first two short order webs from paper rolls on the tandem splicer can be prepared for splice while the first longer order is running by threading the first of the short order webs from the tandem splicer to the primary splicer for splice preparation on the primary splicer and preparing the second short order for splice on the tandem splicer. The first and second short order webs are spliced on the primary and tandem splicer, respectively, immediately after completion of the longer first order. The third short order web is provided by a fourth roll mounted on the roll stand for the primary splicer immediately after completion of the longer first order.
Abstract:
A tubular covering sleeve for electric-cable joints is disposed on a supporting element causing radial expansion of said sleeve (2) starting from axially opposite end portions (7a) of the sleeve (2) itself. The tubular sleeve (2) in a radially expanded condition is installed on the supporting element (3). A apparatus (1) for putting into practice the above described method comprises a support (4) for the tubular sleeve (2) and a pair of expanders (10) to be located to a position substantially coaxial with said sleeve (2), each at a respective end (7) of the sleeve (2) itself. Driving means (11) is used for introducing the expanders (10) into the respective sleeve ends (7) and causing radial expansion. The apparatus (1) further comprises devices adapted to dispose the sleeve (2) in a radially expanded condition on the supporting element (3).
Abstract:
An elastic core fiber is caught to prevent production of a core yarn having no elastic core fiber. In a method for producing a core yarn by supplying a sliver to a drafting device in a predetermined amount and merging a core fiber with the sliver, the sliver is supplied to the drafting device in an amount greater than the predetermined amount over a predetermined period of time after spinning is started, so as to merge with the core fiber, and thereafter, the sliver is supplied to the drafting device in the predetermined amount. Preferably, the amount of sliver that is supplied to the drafting device is changed in accordance with the rotational speed of predetermined draft rollers in the drafting device.
Abstract:
A production device and production method for carbon fibers of the present invention is utilized to reliably obtain a connecting portion having a high process passing property with a simple mechanism so as to achieve a continuous operation and improve a firing process operability for achieving a low cost. A pair of yarn gripping devices for overlaying precursor fiber yarns to be connected one upon another and gripping the overlaid ends is provided, and a fluid processing unit for applying an entangling process by jetting a plurality of rows of fluid in along a yarn length direction is provided between the pair of yarn gripping devices. A plurality of discontinuous thread handling areas of the precursor fiber yarns in a fluid jet area of the fluid processing unit having fluid jet holes are disposed at predetermined intervals.
Abstract:
The device comprises in combination: an interlacing jet for reciprocally joining the covering yarn and the elastic yarn; supporting means for spools of elastic yarn; winding members for winding the composite yarn on a developing cop; a device for interrupting the feeding of composite yarn to said developing cop and starting the winding of the composite yarn on a new winding tube. The supporting means for the spools of elastic yarn are suitable for arranging at least one first spool of elastic yarn in a working position and at least a second spool of elastic yarn in a standby position and for transferring said second spool from the standby position to the working position. Furthermore, a retaining member is arranged near said interlacing jet to withhold an initial free end of the elastic yarn of said second spool in standby position. Means for introducing the elastic yarn of said second spool in said interlacing jet are also provided.
Abstract:
A tail end of a web is attached to a winding core via a two-component mechanism having a core component attached to the core and a web component attached to the web, the two components being attached to each other in releasable fashion. The mechanism assists startup of winding. Upon completion of unwinding, the web component detaches from the core component to expose a region of adhesive on a part of the web component that extends from the tail end of the web. The tail end thus can be spliced to a leading end of another web by attaching the leading end to the exposed adhesive on the web component.
Abstract:
The yarn manufacturing process is monitored by detecting a yarn tension while the yarn spun by a spinning device is wound by a winding device. The yarn tension detected by the yarn tension sensor is corrected based on the rate of change in a winding condition such as a traverse speed or a winding speed, and whether the yarn manufacturing process is in a normal condition or not is judged based on the corrected tension. Also, an abnormal judging reference is corrected based on the rate of change in a winding condition, and whether the yarn manufacturing process is in a normal condition or not is judged based on the corrected abnormal judging reference.
Abstract:
The ends of material webs or tapes are joined to each other in an apparatus in which two holding and press-on heads are tiltable about fixed journalxes away from two fixed guide rollers for the webs so that a slide carriage for the heads and for the fixed guide rollers is avoided. The holding and press-on heads are mounted outside of the spacing between the guide rollers, but close to these guide rollers, but with a defined spacing from these guide rollers.
Abstract:
A method for forming a braided rope. Twisted yarns are first braided together to form braided strands, and the braided strands are then braided together to form the rope. The diameter of the individual twisted yarns is kept to a minimum, thereby reducing the number of twisting stages required to form the yarns and also permitting heat stretching treatment using existing systems. Moreover, in-line connections can be made within the individual strands using conventional braided rope splices, which both eliminates the need to use long splices during manufacture of the rope and enables individual strands to be spliced in the field to so as to repair snags, cuts, and other service damage without having to replace an entire length of the rope.