DE1635913A1 - Yarn carrying and dispensing device - Google Patents

Description

Yarn carrying and dispensing device.

The invention relates to new yarn storage and dispensing devices for circular knitting machines and, more particularly, to an embodiment of a yarn dispensing device which includes a storage device which is responsive to a broken yarn or a “thickened portion or other abnormality in the yarn” Bringing the knitting machine to a standstill and loosening the faulty thread in order to avoid the disadvantage that the faulty part reaches the knitting instruments or that a thread break occurs on the knitting instruments.

The need to create a slack in a defective yarn when the shut-off device is actuated, has hitherto made it necessary that yarn support rods arranged above for knitting machines at such a height that it is appropriate for the operator of the Sfe ^ iekma «*

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It was common practice to use either a ladder or a rod to hold the yarns in the various guides and thread support arms on the linkage.

One task of the achievement confesses to a new one To provide yarn storage and dispensing device in which the devices engaged with the yarn, which work together with the storage device, are designed in a new and improved manner and are arranged in this way can be that the entire height of the overhead yarn support rod on the knitting machine up to one point can be reduced that an operator of the machine in a normal standing position on the machine the yarn '/ on hand can thread without resorting to the use of ladders, threading poles, etc.

Another object of the invention is to provide a new twine knot catcher for use with a storage device of a knitting machine by welclieni Kho th catches the twine when the parking device is actuated is automatically released so as to produce the required slack in the yarn, thereby preventing that a yarn breakage or yarn breakage on the knitting instruments can occur before the machine can be turned off.

The invention proposes to solve the problem posed in a yarn carrying and storage device for knitting machines with a movable arm for carrying the yarn

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as well as parts in the arm which are responsive to abnormal tension in the carried yarn and the yarn from the Release arm, in front of a yarn guide with yarn knot catcher at a level below that provided on the parking device movable arm, and the thread guide part with a substantially vertical thread take-up slot to provide, which is closed and narrow at the upper end and an outwardly expanding part which creates a wide downwardly directed mouth opening for the slot.

The invention is further based on embodiments the yarn support and storage device for knitting machines and a yarn support linkage of reduced height compared to known Yarn carrying and storage devices directed.

In the following description, an embodiment of the invention is described by way of example.

1 is a side view of a knitting machine with a yarn support linkage arranged above it, which is constructed in accordance with known technology.

Fig. 2 is a side view of a knitting machine with a yarn support linkage arranged above; which utilizes the features of the invention. Fig. 5 is a side view on an enlarged scale a parking device to which the yarn knot catcher of the invention is attached. '

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Fig. 4 is a front elevational view of the storage device and yarn knot catcher of the Pig. 3.

Fig. 5 is a cross-sectional view of the storage device along line 5-5 of FIG. 4.

Fig. 1 shows a typical design of a circular knitting machine and its known arrangement. The knitting machine has a housing 11 supported on a floor, on which a number of knitting instrumentalities are circular 12 is arranged. The knitted fabric indicated at 13, the one through the knitting instrumentalities is made, is pulled down and wound onto a take-up mechanism 14. Will continue from the housing 11 on vertical posts a yarn support linkage generally designated 16 at the top carried. In the usual design of the yarn support rod 16, it is necessary that three instrumentalities different heights above the head of the operator of the knitting machine are supported or stored. A first support ring 17 is arranged slightly above the height of the head of an operator and creates a support means for a plurality of yarn packages, one of which is designated in FIG. 1 by l8. In technology it is common to arrange two such yarn packages in a vertically stacked position to avoid idling when the yarn package is exhausted to reduce to a minimum. At a sufficient height above the first support ring 17, there is room for the

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To load the two vertically stacked spools of yarn 18, a second support ring 19 is arranged, which is provided with yarn guide eyes 20 on the circumference, one of which picks up the yarn from each spool of yarn 18. Arranged on the yarn support linkage at a distance above the second support ring 19 is a third support ring 21 which carries storage devices 22, one of which is shown in FIG. The parking device 22 includes a slidable yarn engaging arm 2j5 * which is adapted to move downward in response to an abnormal condition in the yarn so as to lower the yarn. from the height of the third support ring 21, liemi the yarn is released from the parking device 22 * it falls down, and with reference to a yarn guide device 24, which feeds the yarn to the Striokinst ^ umentalifcatsn, the path of the yarn is considerably shortened, as in dashed lines in Pig. 1 is shown. -The shorter yarn path by releasing the yarn from the storage device creates a slack in the CMm ₅ yarn breakage is prevented., D © r could occur in such close proximity Strickinstrumentalitäten that the ge "torn yarn would be drawn into the work piece. In the known design, as shown in Pig »I, a thickening or a knot in the yarn emerging from the yarn package 18 would be in the

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eye 20 are arranged, thereby causing the Yarn tension increases and strikes against the storage part, in order to move the yarn for the one shown in dashed lines Release way. If, in this known embodiment, the yarn wedge carrying device 17 is above the head of the operator a knitting machine is arranged, the operator must use a ladder or a thread thread to to reach the parking device 22, and the operation of the machine is disadvantageous as a result.

In Fig. 2, the yarn storage and delivery device of the invention is shown. The one in Pig. Knitting machine illustrated 2 may be identical to that shown in Fig. 1 and includes a housing 11 which Strickinstrumentaliöäten 12 for the preparation of a knitted fabric 13s which is received by a receiving mechanism 14. On the knitting machine housing 11, posts 15 carry a first support ring 17 for a plurality of yarn packages. one of which is shown at 18. At this point, the agreement with the usual yarn storage device of the dispensing device ends.

The yarn support linkage 26 according to the invention includes directly above the support ring 17 for the yarn lap 18 a support ring 27 * on which the parking devices 22 are attached. The support ring 27 is preferably arranged at a sufficient distance above the support ring 17, around room for usually in a vertical direction

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stacked pairs of yarn spools to create l8. With everyone Parking device 22 is connected to a knot catcher according to the invention, which is described in Pig. 2 generally shown at 28 and which is so constructed and arranged that when the thread engaging arm 23 of Shutdown device falls down in response to an abnormality in the yarn. the yarn also from the Knot catcher 28 and falls from the thread package 18, and the thread takes the one shown in Fig. 2 in dashed lines Path to the yarn guiding device, which the Yarn feeds the knitting instrumentalities. A thickening or a knot in the one protruding from the thread package 18 Yarn is caught in the knot catcher 28, creating an abnormal tension in the yarn which causes that the parking arm 25 falls down and therefore the yarn into the one shown in Fig. 2 in dashed lines Releases position to create a slack which causes a yarn breakage in the immediate vicinity of the knitting instrumentalities prevented. By the embodiment according to the invention, if the yarn package l8 is slightly above the height of the head of the operator of the machine is arranged, the parking device 22 is arranged at a height accessible to an operator so that he does not resort to using a ladder, a threader or the like. must take. According to FIGS. 3, 4 and 5, the knot catcher is 28

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of the invention applied to a known type of a Parking device 22 is shown. The following brief description of the design of the parking device is given, to describe the position of the new knot catcher 28 in relation to the device, although it can be seen that this knot catcher can be used for any known type of storage device.

The storage device 22 contains a housing 30, which is preferably made of a non-conductive material, for example a plastic, in the inside of which a metal holding plate J1 is attached. A pair of retaining dowels 32 pass through the housing 30 and are screwed into the support plate 31 in order to attach the parking device to a grounded metal rod of the yarn support ring 27, as shown in FIG. In the housing 30 of the curved wire engaging the yarn arm 23 is pivotally mounted, which is provided outside the housing with a pair of upwardly directed Garntraghaken ~ $ K, the resisting with a wear coating 35 may be covered of a plastic. Inside the housing 30, the yarn-engaging arm 23 is provided with an offset portion 36 to which is connected a spring 37 which is anchored by means of a cord 38 to an angularly adjustable shaft 39 which has a head 40, which protrudes outward from the housing 30.

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By means of the head 40, the applied by the spring 37 can Tension can be selectively adjusted so that the amount of tension in the yarn at which the yarn support arm 23 rotated against the spring 37 can be changed can. When the arm 23 is abnormally tensioned in is pushed down on the yarn, the spring snaps over the center point and then works to the Hold arm 23 in a downward position, as shown in dashed lines in FIG. 5, the position in which yarn can fall off the hooks 34.

In a metal bearing 4l in the housing 30 is a with the thread engaging finger 42 from a light wire pivotally mounted within housing 30 with an upwardly directed contact arm 43 is provided. As in Figs. 3 and 4 and in full Lines shown in Fig. 5, the finger 42 can be tightened by a tightening extending from the yarn across the hook 34 of the raised yarn support arm be kept in an elevated position. When the yarn support arm 23 due to an abnormal tension in the thread in the lowered Position is pulled or the tension in the yarn, e.g. due to a yarn breakage or abnormal slack would be significantly reduced, the finger 42 would fall by gravity into the position shown in broken lines in FIG. 5, in which position the contact arm 43 connects to the metal switch plate

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moved into engagement, which is carried by a bearing member 45 within the storage housing 30. The bearing member 45 is by means of a fixing screw 46 similar to a terminal 47 outside the housing J50 firmly connected, and this clamp 47 can be engaged with an electrical conductor 48 which is insulated from the knitting machine housing. A wire 49 connects the bearing part 41, in which the finger 42 is articulated, with the support plate 51, so that the contact arm 45 forms a normally closed switch between the conductor 48 and the knitting machine frame. A plurality of similar parking devices 22 can be connected in parallel between the knitting machine housing and the electrical conductor 48, and the electrical conductor 48 is connected in the usual manner to a relay (not shown) which controls the operation of the knitting machine drive motor, so that when the contact arm 45 one of the parking devices moves into engagement with the holder plate 44, the drive for the knitting machine is switched off.

The knot catcher of the invention preferably takes the form of a continuous length of wire that takes one end is provided with a loop 60 through which the knot catcher mediates on the storage device a fastening screw 61 is attached, which is in the Housing 30 is screwed in. Extends from loop 60 the wire in one extends downwards

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kenden leg 62 to a point below the storage device and between the hooks 34 of the yarn support arm 23 engaged with the yarn. The wire is then bent to an upwardly sloping inverted Y-shape which defines a thread take-up slot, the one narrower upper end 63 and one outward widening lower end 64 creates a further downward opening mouth for the upper end 63 of the slot is created. The free end of the wire which forms the knot catcher is preferred bent back to itself into a loop 65 to make a Prevent injury to the operator.

According to FIGS. 2 and 4, that part of the knot catcher is which determines the thread take-up slot 63, 64, arranged at an angle transversely to the path of a yarn that extends from the yarn package 18 to the parking device 22. The operator arranges when applying the yarn to the hook jj4 of the yarn support arm 23 of the storage device simply attach the yarn in the upper slot end 63 of the knot catcher, which is therefore self-threading, i.e. it has no eyes or ears through which the end of the twine must be threaded. Since the thread package and the thread guide device 23, which the Yarn leads to the knitting instrumentalities, at a distance are arranged essentially at the same height from each other and the S storage device and the node

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catcher 28 are carried at a greater height, a yarn falls when it is released from the yarn support arm 23, out of the knot catcher slot 63, 64 by gravity into the relaxed position, which is indicated in dashed lines in FIG.

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Claims (6)

- ι? - ■ Claims. 1. Yarn carrier and storage device for knitting machines with a movable arm for carrying the yarn and parts on the arm which respond to abnormal tension in the one being carried Respond yarn to indicate the abnormality and release the yarn from the arm and a yarn guide with yarn knot catcher, characterized by a carrier for supporting the yarn guide part at a level below of the movable arm provided on the parking device, and the yarn guide part with a substantially vertical one Thread receiving slot is provided, which is closed and narrow at the upper end and one after has outwardly widening part which creates a wide downwardly directed mouth opening for the slot. 2. Yarn carrying and storage device for knitting machines or yarn knot catcher according to claim 1, characterized in that the yarn guide part is a wire of substantially Has uniform cross-section, and in which the thread take-up slot through a continuous Part of the wire is formed which is bent into an inverted Y-shape. 3. Yarn carrying and dispensing device for circular knitting machines with an upper linkage and a carrier for at least one thread lap for unwinding the thread upwards essentially in the axial direction of the Oarn- 109831/0412 16 3 b 913 Winding, as well as with a storage device with movable arm with support parts for the yarn and means which in Responses to an abnormal tension in the worn yarn take effect to indicate the abnormality and releasing the yarn from the arm, characterized by a support of the parking device substantially vertically above the thread winding carrier and between the storage device and the thread winding carrier is arranged a knot catcher which is substantially perpendicular to one another extending thread take-up slot with a narrow closed upper end for the thread winding to the displaceable arm of the parking device is provided extending yarn, and the knot catcher is provided to the outside has a flared free end which forms a wide downwardly directed opening for the slot, and a device in the linkage below the level of the parking device for guiding the yarn to the knitting machine. 4. Yarn carrying and dispensing device according to claim 3 * characterized in that the knot catcher is carried by the storage device. 5. Yarn carrying and dispensing device according to claim 3, characterized in that the yarn winding carrier and the guide for the yarn to the knitting machine at a distance from each other on a linkage arranged above are arranged at a first height, and the storage device is carried on the linkage at a higher point _{ .- -: y: * SK fo9831 / OA 12 163b 913 is, and with which the part of the Khotenfänger who the Yarn take-up slot determined to be at an angle across the path of a yarn from a yarn package on the yarn carrier the parking device extends. 6. Yarn support and storage device for knitting machines according to one of claims 1 to 5, ä characterized by parts for supporting the storage device above the yarn package and above the needles and a knot catcher which has a narrow elongated slot which is open at one end, and this knot catcher during normal operation of the machine in its movement to the needles can let the yarn pass through its slot, and a support device for the knot catcher is provided so that the slot is substantially vertical and its open end is directed downwards when the parking device releases the twine. 109831/0412