TWI337633B - Positive yarn feeder having a movable intake eyelet - Google Patents

Description

1337633 IX. Description of the invention: [Technical field to which the invention pertains] The yarn is sent to a yarn in a manner that is used for active yarn transfer, that is, controlled yarn delivery, in a yarn feed amount. Yarn machine, yarn feeder of a knitting machine. [Prior Art] Active yarn feeders are known. For example, U.S. Patent No. 5,782,424 discloses an active yarn feeder having a carrier for attachment to a machine ring and a vertical shaft supported by the carrier (4), 10 A pulley is carried on the top and a feed pulley is carried on the bottom. A yarn brake is provided on the free end of the carrier, a yarn extending through the yarn brake to the yarn feed pulley and being wound on the yarn feed pulley for several weeks. A yarn input bobbin is provided on the yarn feed carousel, and the shuttle eye guides the yarn in a controlled manner on one of the conical narrow yarn input regions of the yarn feed roller. Between the yarn 15 is fed between the shuttle and the yarn brake, a yarn sensor lever applies a force to the yarn to test for the presence of a yarn. In the event of a yarn break, the yarn sensor core will fall down and generate a shutdown signal. A similar yarn sensor lever is provided on the output side behind the yarn feed pulley for monitoring the yarn traveling in the direction away from the yarn feed pulley. 20 Although these feeders have proven to be basically satisfactory and have become a benchmark, they require some degree of skill to penetrate the yarn, especially in yarn brakes, input sensors and inputs. The place of the eyes. Another type of yarn feeder is disclosed in U.S. Patent No. 3,922,887, the yarn feeder of which has a carrier, and a toothed pulley is rotatably supported on the carrier 1337633. A drive toothed belt is wound around the toothed pulley. A guide yarn is provided to guide the yarn onto the pulley. The yarn guide eye is height-adjustable for guiding the yarn under the toothed belt in a first position to convey the yarn in a non-slip or slight slip. In a second position 5, the yarn guide shuttle guides the yarn to the area of the toothed pulley that is not in contact with the toothed belt. In this case, the yarn slides on the upper surface of the pulley so that it does not actively advance. The yarn feeder is used in a rubbing operation. U.S. Patent No. 4,598,560 discloses a friction type yarn feeder having a carrier that supports a vertical rotatable shaft. The shaft has a pulley at the top and a plurality of friction wheels at the bottom. The yarn travels in a one-line winding friction wheel and contacts the friction wheel along one of the outer circumferences of the friction wheel. A cantilever lifts the yarn off the surface of the friction wheel. The position of the cantilever depends on the tension applied to the yarn by the yarn machine. Therefore, the friction feeder delivers the yarn only when and only when a tension is applied to the yarn by the yarn machine. • Although the yarn guide member that is movably supported is used to start and stop the yarn transfer in the case of the friction yarn feeder, in the case of the active yarn feeder, the yarn is guided in a controlled manner. To the input area of the yarn feed wheel, a single layer of coil is established. Then, the yarn running on the yarn feeding roller rolls the existing thread reel forward toward the ground. The yarn sensor element or other movably supported component is used to detect a yarn breakage in a timely manner so that the knitting machine can be shut down before the broken end runs into the machine. An active yarn feeder is disclosed in U.S. Patent No. 4,399,952, which is incorporated herein by reference. The two cages are arranged at an oblique angle to each other to provide one of the yarn rolls for feeding. It has a storage drum from which the yarn is known by rotating the drum or by a further storage yarn, which is pulled in the axial direction. The wire winding device reaches the drum. '5 SUMMARY OF THE INVENTION The object of the present invention is to improve the characteristics defined by the yarn feeder described above. This object is achieved by a yarn feeder comprising the first one of the patent application. 10 In the case of the yarn feeding according to the present invention, it is an active yarn feeder or a yarn feeder. The yarn-discreting positive yarn feeder has a yarn feeding roller, and the yarn to be conveyed is wound around the feeding roller, and the wheel is repeatedly made so that the amount of the conveyed yarn does correspond to the yarn feeding of the yarn feeding wheel. The shuttle eye is disposed on one side of the yarn feed wheel, and the m 4 heart-feeding wheel is provided above one of the yarn input areas. The yarn input region constructs a yarn input bevel, i.e., the diameter of the yarn feed pulley _ a portion that is significantly reduced from the shank to the top position to a position slightly below the axial direction. The yarn input zone can be considered to have a greater than 120. One - the conical part of the cone angle. Unlike a true conical structure having a circular cross section, the yarn input region may have a polygonal cross section, and a plurality of independent sticks form a cage feed pulley. The line input zone is for providing a slow, axially slidable movement of the yarn roll as the yarn feed wheel rotates. The yarn feeder is provided with a yarn feed pulley which can be formed by an enclosed body or a side. The yarn coil is wound around the yarn feed roller a plurality of times. The yarn is fed into the shuttle through a yarn before reaching the yarn feed pulley. The shuttle eye and the feed pulley rotate relative to each other 1337633 to produce a coil. This movement is achieved, for example, by rotation of the yarn feed wheel relative to one of the yarn input eyes. Feeding of the yarn roll can be carried out by the shape of the yarn feed wheel or by a separate feed device. The yarn input shuttle is movably disposed with the restriction that the yarn to be traveled on the five yarn feed pulley is pivoted to a working position. In the event that the yarn has broken due to its breakage or because it has sagged for a significant degree for other reasons, the 'yarn input fuzzle will move to another position, which is detected by the sensing member and used to emit a Corresponding signal. The signal can be a switching signal or, for example, can be used to signal a fault condition and/or turn off a later connected machine such as a knitting machine. The yarn input shuttle is preferably held in a manner such that it moves in a vertical plane during movement from the working position I to a stop position u, the axis of rotation of the yarn feeding wheel being located in the vertical plane and The vertical plane extends radially from the axis of rotation. During this event, the yarn input 15 shuttle eye remains at least in the operative position and preferably remains in all of the intermediate positions and remains in the parked position above the yarn storage area of the yarn feed pulley. In the conventional yarn feeder, a yarn guide shuttle is provided on the input side in front of the yarn feed roller for guiding the yarn to the input area of the feed wheel, and also provides additional application on the yarn. Frictional yarn sensor lever. In the yarn feeder according to the present invention, the yarn sensor lever and the yarn input bobbin are combined into a movably supported member so that there is no such thing as a force applied to the yarn. In this way, it is possible to work with a very low yarn input tension that is smaller than the conventional yarn feeder. By virtue of the possibility of working with a very low yarn input tension, the yarn is less stressed and the wear occurring in the yarn guiding element is less than 1 1337633. By minimizing the amount of yarn deviation, the tension of the yarn in progress and its damage are reduced. For this reason, this trend has made the use of very fine yarns feasible. The movably supported yarn input shuttle is preferably oriented such that its axis ? 5 is radial to the axis of rotation of the yarn feed pulley. In this way, its function ^ is independent of the direction of rotation of the yarn feed wheel. - The yarn feed roller of the yarn feeder according to the present invention may be driven by a motor at a constant or variable revolutions per minute (rpm) or by a belt. By inputting the rotatably supported yarn into the shuttle eye, it is in principle possible to monitor the yarn tension. According to a preferred embodiment of the present invention, the yarn input fuzzing is used only to monitor a yarn breakage, i.e., it only monitors the presence of the yarn. For this reason, the yarn input eyelet is held by the yarn against a fixed pedestal, preferably at a position (working position) close to the yarn feeding wheel. After the yarn breaks, the yarn input shuttle can be removed from the yarn feed pulley (stop position). At the same time, a preferred pivoting motion is performed. The path of the movement of the yarn into the eyelet is preferably selected as described above such that the yarn is fed into the eye at all end positions and at the intermediate position at the height of the yarn input area of the yarn feed wheel. Or above. In this way, it is ensured that the yarn is always wound on the delivery 20 yarn in a well-ordered manner even if the yarn input shuttle is temporarily turned out of its working position' and does not occur here. The overlap of the line volumes. The yarn input shuttle is preferably carried by a pivot lever that is movably supported at one end, and the yarn input shuttle is disposed or formed at the other end of the lever. Preferably, the pivoting lever pivots about an axis above the upper rim of the yarn feed wheel. Moreover, the axis is preferably oriented away from the feed pulley

Claims (1)

X. Patent application scope: 1.; 1. A yarn feeder for conveying at least -,,,,, oil, and y-line (15) to a yarn (15) to make ^ ( 1 ) (5) The yarn uses a machine, in particular a s, a [Knitting machine (1), a knitting machine, a weaving machine, a weaving machine or a similar machine, the yarn feeder comprising: a carrier (9), A yarn feed pulley (14) has an axis of rotation (A) and is rotatably supported on the carrier, the yarn (i 5 ) being wound around the X shifting wheel (14) a plurality of times, the yarn feeding The wheel receives the yarn (丨5) in a non-slip manner after it is rotated, and the yarn is fed into the shuttle eye (28), which is disposed on one side of the yarn feeding wheel and which is in a vertical plane ( E) is displaceably held between at least two different positions (j, π) defined by the yarn tension, the axis of rotation (4) of the yarn feed wheel (14) being misaligned in use during use In the plane (Ε), the detecting device (37) is used to detect the position of the yarn input into the eyelet (28) φ, and the detecting device (37) comprises a transmitter element (39), a web (30a) and The intermediate member (31) is for when the yarn input shuttle (28) and a lever (3) are removed from the position (1), even if the lever (30) is in the position (11), the yarn The wire (15) is fixedly held in the plane (E) and the input area of the yarn feeding wheel (14), and a lever arm (36) 'the transmitter element (39) and the lever arm (36) The lever (30) is combined with the yarn input shuttle (28) to form a unit. 2. The yarn feeder of claim 1 is characterized in that the yarn feed 20 is along the 1^11\?;\95619\95619-no..1 line revision. £:丨3^.(1 〇 (: SS. 10. -3 * Wheel (14) is driven by a pulley. .1 - ' .3. The yarn feeder of the first item, characterized in that the yarn is fed by the electric motor. 4. = The yarn feeder of item I of the second patent dry circumference, characterized in that the yarn feed ς W has a steeply tapered input zone (16) 〇=申: patent|& The yarn feeder 'is characterized in that the yarn j& eye (28) is placed at or above the yarn input zone (16) at least in its position (1) π). 6. The application of the yarn feeder of item 5, characterized in that the yarn is inserted into the mortise (28) at its two positions (jj. is placed at the height of the yarn input area (16) or 7. The feeder according to the scope of the patent application, characterized in that the yarn feeding wheel (14) has a storage area (17), and the diameter of the storage area is substantially along its axis (A) The yarn feeder of claim 1 is characterized in that the yarn feed wheel (14) has a yarn output area (18) formed by a projecting conical rim. The yarn feeder of claim 1 is characterized in that one of the positions (1, „) of the yarn input into the eyelet (28) is a working position 'ί0, wherein the yarn input shuttle (28) is The yarn tension is held against a fixed pedestal (35) at a position close to the yarn feed pulley (14). 10. The yarn feeder of claim 1 is characterized in that the yarn is fed into the shuttle. One of the positions (Ι, Π) of the eye (28) is a stop position in which the yarn input eyelet (28) is 21 1337.633* after the yarn (15) breaks. * i · · · · 死 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The lever (30) is carried as a pivot. 12. The yarn feeder of the scope of the patent application is characterized in that the 桢 杆 rod (30) as a 5-pivot has a pivot axis (33), the pivot axis Oriented to traverse the axis of rotation (a) of the yarn feed wheel (14). 13. The yarn feeder of claim 12, wherein the distance is provided at the pivot axis (33) and The distance between the axis of rotation (A) is greater than the maximum diameter of the yarn feed wheel (14). ° 10 14. The yarn feeder of the scope of the patent application is characterized by a yarn brake (21) In connection with the yarn feed pulley (M), the yarn (丨5) is braked by the yarn before it reaches the feed yarn pulley (14). 15. The yarn feeder of claim 14 of the patent application, Characterized in that the movably supported yarn input shuttle (28) is the only contact between the yarn (15) and the yarn feed pulley (21). A yarn feeder member. 16. The yarn feeder of claim 1, wherein the detecting device (37) is a sensor comprising the emitter element (39) and a sensor element (40) Measuring device (38). 20. 17. The yarn feeder of claim 16, wherein the emitter element (39) is movably supported and attached to the yarn input shuttle (28) 18. The yarn feeder of claim 16, characterized in that the sensor element (40) is movably supported and attached to the carrier (9). 22 1337633 19. 20. The yarn feeder of claim 16 of the patent application, characterized in that the sensing element (40) is arranged in or on the carrier (9). The yarn feeder of claim 16 is characterized in that the emitter member (39) is a permanent magnet and the sensor element (4〇) is a reed switch. The yarn feeder of the first aspect of the invention is characterized in that the yarn: the input eyelet (28) has an annular yarn guiding member (29). 22. (6) The yarn feeder of claim 21, wherein the yarn guide member (29) is annularly closed. M3. ^ The yarn feeder of claim i, characterized in that the yarn feeding benefit (5) is an active yarn feeder. 24. If you are in the middle of the patent scope! The yarn feeder of the item is characterized in that the yarn feeder (5) is a yarn storage yarn feeder. 25. The yarn feeder of the third paragraph of the patent application, wherein (4) (4) the yarn guide 15 element (29) is turned off from the yarn feeding wheel (14) (π) _ take-threading position where The yarn guiding element (29) can be taken freely. The yarn feeder of claim 25, wherein the threading position is a position directly below the yarn brake (21). .20 23