Abstract: The present application relates to the technical field of fiber winding control, and provides a tension control method of a multi-bundle winding equipment combined driving system, which solves the problem that the tension fluctuates greatly and cannot be output constantly in the fiber winding process.

Abstract: A filament winding apparatus detects that a fiber bundle is likely to break and prevents generation of defective products. The filament winding apparatus applies a prescribed winding tension to the fiber bundle unwound from a fiber bundle feeding package and winds the tension-applied fiber bundle around a mandrel. A tension applying portion applies the winding tension to the fiber bundle at a position that is immediately before a side of the mandrel between the fiber bundle package and the mandrel. A tension sensor detects the tension of the fiber bundle between the fiber bundle feeding package and the tension applying portion. A determination means determines a tension abnormality of the fiber bundle by comparing pre-set reference information with the tension measured value measured by the tension sensor.

Abstract: A wire tensioning arrangement is provided for applying tension in a wire supplied to a wire feeder. The wire tensioning arrangement includes first and second tensioning members positioned on a first axis to receive the wire therebetween. The first and second tensioning members are adapted to engage opposite sides of the wire at a location on the first axis to apply a tensioning force to the wire when the wire is pulled by the wire feeder in a direction substantially perpendicular to the first axis.

Abstract: A yarn tension control device controls tension in a running yarn. The tension control device includes a housing having a yarn guiding inlet for receiving running yarn at an unwinding tension from a yarn supply source, and a yarn guiding outlet for guiding running yarn exiting the housing at a delivery tension. First and second opposing yarn engaging surfaces are disposed between the inlet and the outlet, and are adapted to frictionally engage opposite sides of the running yarn along a path of yarn travel through the housing. The first and second yarn engaging surfaces define a respective plurality of sequentially spaced friction rolls. A biasing assembly resiliently urges the first and second yarn engaging surfaces together. The opposing friction rolls cooperate to form a number of sequentially spaced nip points adapted to adjust yarn delivery tension in response to stress variations in running yarn entering the housing.

Abstract: An apparatus and method for melt spinning a plurality of downwardly advancing multifilament polymeric yarns, and winding the advancing yarns into respective packages. Each of the advancing yarns is brought into contact with a separate yarn delivery mechanism which acts to control the yarn tension before the yarn is wound into a package. Thus, the yarn tension of all of the yarns can be made substantially the same when they are wound into packages, which permits all of the packages to have the same winding structure and the same packing density.

Abstract: A wire tensioning device having a guide for taking up an advancing wire having slack and a brake for applying a braking force to the guides. In a wire insulating system, a wire from a supply reel or spool is passed to a take-up reel or spool, through intervening components, which accumulate, tension and apply insulation to the advancing wire. The wire is first passed from the supply reel to an accumulating device in the form of a vertical accumulator or a flipper payout. From there it is passed through the device of the present invention having a plurality of rotatable sheaves or pulleys about which the advancing wire is trained. A braking force is applied to one of the sheaves by an air brake to apply a tensioning force. From the tensioning device, the wire is fed through an insulation-applying crosshead device and then on to a take-up reel or spool.

Abstract: A tension apparatus for imposing a predetermined tension on a wire-like member which is used for a stator or a alternator. First and second rollers are rotatably supported on a supporting means in such a manner that a space between the first roller and the second roller is smaller than a diameter of the wire-like member. When the wire-like member is passed through a space between a first roller and a second roller, the wire-like member is deformed, and after all, a predetermined tension is imposed on the wire-like member. The tension of the wire-like member can be changed in accordance with the space between the first roller and the second roller.

Abstract: A yarn tension device of the type including three rollers mounted freely rotatably on a support housing, at least one of these rollers being subjected to the action of an adjustable permanent-magnet braking system (or magnetic brake), and the yarn, during its movement being deflected around the periphery of the rollers, the movement of the yarn upstream and downstream of the tension assembly being executed in a common direction called the "running axis". The rollers are mounted on the support housing in such a way that:first and second rollers, called "entry rollers" are arranged in the vicinity of the yarn introduction zone such that their axes are on either side of the running axis and are maintained in contact, at least one of these rollers having an adjustable braking device; anda third roller, called an "exit roller", itself is positioned downstream of the first and second rollers in the direction of travel of the yarn, its surface being tangent to the running axis.

Abstract: A blocking device, preferably in the form of a baffle plate is provided behind the rollers of a thread tightener in a bobbin creel which can be pressed against one another, namely behind the roller pair in the direction of the through-passage. In case of a thread break, the baffle plate prevents the loose thread end from falling out of the roller tightener. Preferably, the baffle plate is latched onto a thread hoop and rotatably journalled, so that it can be swung from an operations position into a neutral position.

Abstract: In order to increase the yarn tension between a winder and a bobbin creel, the yarns are returned from a first yarn tensioner to the inlet of a second adjacent yarn tensioner in the row. The rows of bobbins which are associated with the second yarn tensioners remain without bobbins. In order to facilitate a change in direction when dealing with sensitive yarns at the second yarn tensioner, a direction-changing roller is disposed at the inlet thereof.

Abstract: A thread storing and supplying device for textile machines, especially knitting machines comprises a housing, a driveable thread storage drum provided in the housing for supporting several windings of a thread, a thread guiding element arranged to supply a thread to the thread storage drum, and a thread brake and a knot monitor which together form a combined thread braking and knot monitoring unit located immediately after the thread guiding element as considered in a thread running direction this thread braking device includes two freely rotatable axes-parallel rollers, one of the rollers being displaceable relative to another of the rollers which is non-displaceable against a braking spring force the thread braking device also has an adjustable abutment which defines a maximum displacement value for the gap between the rollers, and the non-displaceable roller is arranged so a thread is deflected over it. The displaceable roller is mounted on a supporting means which is pivotally mounted on the housing.

Abstract: A device for controlling the twist associated with optical fiber being wo on a bobbin is disclosed. Signal transmission analysis in fibers wound on bobbins require techniques not normally encountered when considering long straight fibers. Signal loss on a fiber cable payout assembly is mainly due to small bends in the fiber at crossover positions and in the transmission regions where the winding travel changes directions. The signal attenuation in a length of optical fiber is also known to be a function of the amount of twist in the fiber both in the wound and payed out states. This invention allows the amount of twist of the optical fiber to be precisely controlled from zero to full (360 degrees twist per turn of the bobbin) twist to provide optimum signal transmission for both the wound and payed out states.

Abstract: A gathering and storing device for electric extension cords and comprising a frame providing a handle member at the upper end to be grasped by the user and a foot bar to be located on the ground and stood on by the user to stabilize the cord gathering device during use. A rotatable reel has a handle which is rotated to gather the cord. A slack adjuster is located adjacent the handle and includes a pressure plate to which the user's fingers are applied to provide a slight pressure to insure that the cord is gathered onto the reel in a neat and orderly fashion. The pressure plate has finger members which guide the cord and prevent it from slipping off the pressure plate. A locking ring is attached about the frame and can be placed about a portion of the reel to insure the reel does not move during storage.

Abstract: In a housing, two rollers having substantially parallel axes are freely rotatably journaled and bound between them a clamping bite. The thread to be braked is drawn through the clamping bite and thereby drives the rollers. A first of the two rollers is stationarily mounted in the housing. The second roller comprises a cover made of a rubber-elastic material. This second roller is journaled in a pivotable forked lever which is under the action of an angle lever. The second roller can be pressed against the stationary first roller with an adjustable operating bias by means of the angle lever and a force accumulator constituted by a tension spring. Spring means of a rapid braking device constitute a compression spring supported by a braking rod which is axially displaceable between two end positions. The compression spring acts upon a spring bush carrying a nose member. In one of the two end positions of the braking rod the nose member extends with play beneath an arm of the angle lever.

Abstract: A wire electrode pull-up mechanism in a wire-cut electric discharge machine having an energized wire electrode stretched between upper and lower guides for machining a workpiece wherein the wire electrode pull-up mechanism pulls up a wire electrode which has been passed through a bore in the workpiece until the upper end of the wire electrode protrudes from the upper side of the workpiece, and includes a gripping member for gripping the wire electrode.

Abstract: A device for stringing tennis rackets and the like, and for tightening sagging strings, which, in the preferred embodiment comprises three rows of rollers clamped around two adjacent strings inside the racket frame. Each row of rollers is attached to the end of a lever. The levers are rockingly linked together so that the strings can be gripped and released between the rollers as desired. The rollers are mechanically coupled to each other by way of a series of intermeshing spur gears. A crank, attached to the gears, drives the rollers and allows adjacent rollers to rotate in opposite directions. Thus, two strings in gripping engagement with the three rows of rollers are pulled in opposite directions as the crank is turned.

Abstract: A yarn tensioning device is illustrated having means for insuring proper threading of the yarn which may be accomplished manually assuring positioning of the yarn in the yarn channel or passageway beneath a number of stacked rollers.

Abstract: A yarn tension device is disclosed which includes a generally hollow, cylindrical body having an open top and an interior channel of sufficient size to contain one or more tensioning balls. The body terminates downwardly in inwardly converging bottom walls within which are mounted a pair of diametrically opposed ceramic eyelets for yarn inlet and yarn outlet. A flanged roller is horizontally positioned at the bottom of the body in transverse alignment to a plane through the eyelets to apply tension to yarn passing through the eyelets. The body is formed with parallel, planar walls adjacent to the roller flanges to maintain the position and orientation of the roller during yarn tensioning.

Abstract: A tensioning device to control the dispensing of a large roll of ribbon or tape under a uniform tension as the roll becomes smaller in diameter. The tensioning device comprises a rotatably supported spool that is fixedly positioned and an adjustable roller mounted to a pivot arm, whereby the roller is positioned contiguously with respect to the fixed spool, the ribbon or tape being interposed therebetween. The roller includes an outer pliable frictional cylinder which is rotatably supported on the shaft mounted to the pivot arm in a vise-like arrangement, whereby the frictional cylinder can be squeezed to cause the outer diameter thereof to be adjusted to the proper frictional engagement with the ribbon or tape.

Abstract: A yarn tensioning device is illustrated employing longitudinally spaced stacks of transverse cylindrical rollers, the lowermost of which open upon a yarn passageway for exerting tension upon the yarn at spaced points along the yarn path which extends longitudinally beneath the rollers, wherein an upwardly extending passageway opens laterally and is defined by an upwardly extending member and an overhanging flange so that the yarn may be conveniently fed under the ends of the lowermost rollers which project into the passageway and then into the yarn passageway and retained therein during tensioning.

Abstract: A tensioning device is illustrated wherein a plurality of longitudinally aligned upright receptacles carry stacked rollers the lowermost of which is driven by the passage of yarn thereunder. A vertical yarn passageway is carried in at least one end of the housing forming an end receptacle to permit a change of direction in the yarn to cause up and down roller movement to compensate for changes in tension in the yarn as well as alternate yarn paths. Passageways are provided in the housing adjacent the pairs of rollers so as to permit expulsion of lint from the receptacles which is promoted by turning of the rolls. Magnetic means may be carried beneath the device for varying the force exerted by the rollers on the strand and the magnetic means may be varied for this purpose. Detector means such as photo-electric devices may be utilized for detecting variation in the turning of the rollers to act as a stop motion for the machine utilizing the tensioning device.

Abstract: A wire line includes a flyer payoff and means for controlling the wire discharged from the flyers payoff by a tension system comprising two spaced tensions, the first of which comprises two groups of rolls with the rolls of one group staggered with relation to the rolls of the other group with the groups relatively movable toward and from each other to apply more or less tension on the wire as it leaves the flyer payoff with the tension system also including a second tensioning means comprising a drum and a guide sheave spaced therefrom about which the wire is passed with sufficient surface engagement with the drum and sheave so that they will rotate as the wire passes thereover rather than the wire slip on either, and then applying a friction drag on the drum to retard the rotation and apply a greater amount of tension before the wire passes on to a point to be serviced.

Abstract: A yarn tension device is illustrated wherein a concave arcuate surface defines an indentation extending across and below a yarn channel forming an arcuate interruption in the yarn channel for receiving an arcuate rotatable element for rotation by the yarn as it moves through the yarn channel. It is further contemplated that a housing provide an upright receptacle for receiving a number of rotatable elements for rotation by the yarn utilizing the force required to rotate the rotatable elements for tensioning the yarn. A number of receptacles receiving rotatable elements may be provided in spaced aligned relation to vary the amount and mode of tension application. A side opening yarn entrance passageway is contemplated for self-threading the yarn beneath a rotatable element.

Abstract: A photographic printer wherein a web of photographic paper is being withdrawn by advancing rolls stepwise from a supply reel and is fed toward a copying station where successive increments of the web are exposed to light during intervals of idleness of the advancing rolls. The copying station is followed by a loop former for the web, by two normally spaced-apart rollers which are located at the opposite sides of the path for the web, and by a motor-driven flangeless takeup reel. One of the rollers is coupled to a hysteresis brake and the other roller can be propelled toward the one roller by an electromagnet which is energized when the motor for the take-up reel is arrested whereby the rollers pinch the web with a force which prevents any slippage of the web. The motor is started and stopped when the size of the loop respectively reaches a preselected maximum and a preselected minimum value.

Abstract: An improved thread-tensioning mechanism for the stop motion means of a multi-needle machine of a well known type wherein each needle thread, in extending from its supply spool to its needle, normally travels through a thread-tensioning section at a speed and tension which varies in proportion to its rate of variable usage within a given operating or usage range. Its tension variations are sensed by a sag sensor that shuts down the machine when the tension falls below said given range. In our improved thread-tensioning mechanism, a group of independently rotatable idler wheels is provided, one for each needle thread of a corresponding group of individual threads. The periphery of each idler wheel gravitationally engages and presses its needle thread against the periphery of a rotating shaft common to all wheels. Through this engagement, each wheel is rotated by and at the varying speed of its thread.

Abstract: In a yarn tensioning device, two abutting rolls in rotatable engagement at their peripheries have a yarn passed therebetween or around one of the rolls. A resilient covering of at least one of said rolls deforms because of such resilient covering peripherally engaging the other roll. The rolls are rotatably driven by pulling the yarn between the rolls, or around one of the rolls which may be mounted on ball bearings or the like. The inter-roll pressure effected at the peripheral areas of mutual engagement may be regulated by having one roll movable transversely to its axis of rotation and thus, the tension imparted to the yarn pulled between the rolls or over one of the rolls may be regulated accordingly.