DE7031265U - THREAD CLAMP FOR WEFT INPUT ORGANS ON WEAVING MACHINES. - Google Patents

Description

DIPU-ING. HORST RÜSE ^: " ^: . ^; Otfü-INjS. PETER KOSEL

PATENT LAWYERS

3353 Bad Gandersheini, 17 _O MarS 1975

Postfeöil2S

KohenhcienS

Telephone; φ533Σ} 2ΞΑ2

Tel = sramia-Aiiressa: Sfedpalem BadcsatietsteiE:

Our files ^ r. 18 / 37c

Qr 70 31 265.1
Aktiengesellschaft Adolph Saurer

Aktiengesellschaft Adolph Sairrer CB-9520 A rb ο η / Switzerland z

/ Yarn clamp for weft yarn insertion elements on weaving machines

The invention relates to sine yarn yarns for weft yarn insertion organs such as rapier guards, binding needles and the like on looms.

There are ve ~ different Garnklemmen of this type are known in which the yarn between resiliently pressed against each other elements, such _s as spring tongues or guma: i art strength coatings provided rigid pliers, is clamped "You have the disadvantage that the yarn to of the sinking parts and that the spring tongues or pliers have to be operated with the help of often extensive devices when threading or handing over yarn.

Another well-known twine clamp is used by calibration the resulting frictional force between the yarn and scissors-like arranged one above the other and at a distance from one another Deflection links for the yarn as a holding force, the size of the frictional force from the number of deflections and the the resulting total wrap angle is dependent,

Ro / Hn.

Bank account fbrddeutsche Landesbanft, branch Bad Gandersheim, account no. 22.118.970 · Postal checking account: Hannover 65 / « 970

7031285

The clamping of the yarn is caused by the deflection taking place with a selected direction of movement of the yarn with a corresponding increase in the wrap angle of the yarn end emerging from the device. In the event of movement, these yarn ends are no longer guided around the outer deflection links, which means that the Wrap angle and the associated frictional force are reduced accordingly. The yarn can be with less Pulling force can be withdrawn from the twine clamp. This twine clamp has the disadvantage that the scissors-like to take up the twine interlocking deflection links must be spread from the outside, what additional and exactly acting Fixtures required *

The invention is based on the described disadvantages of the known ones described above Eliminate twine clamps and create a simple and universally usable twine clamp. This will be done after the Invention achieved in that the clamp consists of a tube with an inclined, serving as a run-up surface for the weft yarn End face and one held in the bore of this pipe with a radial distance on all sides from this pipe, over the ramp consists of a protruding rod. It is expediently the radial distance between the rod and the hole on all sides at least as large as the yarn thickness.

The weft yarn to be entered onto the run-up area When it reaches the hole, it wraps around the rod with increasing & ate and is thus almost held.

A yarn clamp with a similar mode of action has become known (DL-PS 44 327). With this well-known Terminal, however, the inclined run-up surface is formed by a spring with a circular cross-section, whereby the After being captured by the upturned end of this spring, the yarn first has its angle of wrap in the spring probably enlarged, but the yarn, after it has reached the bottom of a V-shaped longitudinal groove, not increasing The clamping effect experiences more, so that the described known clamp can be used less universally than the clamp

nse «of the invention.

According to one embodiment of the invention, the rod resiliently mounted on all sides in the tube in the radial direction

According to another embodiment of the invention is the rod is longitudinally movable in the tube and has a transverse groove into which the weft thread can enter »

In the drawing are two Ausfühmngsbeispiele the Invention shown. Ss shows

Figure 1 is a perspective view of the first embodiment the gamklemae according to the invention,

Pig »2 shows a longitudinal section through the tube of the twine clamp after Pig. 1,

Pig. 3, 4, 5 cross-sections along the lines III-III or IV-IY or V-V in Pig. 2,

6 shows a second embodiment of the yarn clamp according to the invention in a longitudinal section through a shuttle.

In the first embodiment, 1 is a piece of pipe with the inner wall 2 and the inclined run-up surface 3. The bent-back end piece 5 acts as a peder for radial movements of the rod 4 in the bore 2β.A piece of yarn with a free end 7, coming from a supply bobbin (not shown, stationary outside the shed) or from a storage device for pieces of yarn measured to length, lies on when running up the run-on surface 3 to both ends of each on one side of the inclined run-on surface 3 of the pipe and between these sides around the rod 4 '

The on hand. 1 to 5 described Gara clamp works as follows:

The yarn 6 is at the beginning transversely to the path of the weft insertion member and when it moves it gets in the seal of arrow a on the lower part of the crooked Run-up surface 3, the free thread end 7 of a not shown holder is held »As the entry organ progresses in the direction of arrow a the yarn gets higher and higher on the inclined run-up surface 3 and is in the middle part of the rod 4 in the direction of the pipe wall curved (Fig. 3) with the clearance between the rod and the bore 2 is at least as large on all sides as the thread thickness. According to the resulting tension in the yarn piece 6, automatically or actuated by the synchronous with the movement of the weft insertion member Opening the thread holder for the free thread end 7, this thread end is released. By the one on this thread end acting air displacement and that of the fixed supply spool or storage device for the length-measured Pieces of thread on the other thread end resistance exerted, the thread gets higher and higher on the inclined Run-up surface 3 (Fig. 4 and 5), so that the wrap angle of the yarn around the rod 4 is larger and finally so large that the yarn slides longitudinally around the rod not happened. The rod 4 is according to the spring force of the end piece 5 and the yarn force against the Pipe wall moved.

When the direction of the weft insertion element is reversed the gate is played in reverse order, and the thread 6 is released from the device described.

In the embodiment according to FIG. 6, there is no possibility of loosening the yarn from the yarn clamp Direction reversal of the weft insertion organ shown. 8 is here the weft designed as a shuttle body. thread insertion organ. In a cavity 9 of the same with the Limiting ends 12, a compression spring 10 is housed, which are arranged in the shuttle body 8 longitudinally Rods 4 presses against the ends 12, where this

Rods with their bisnd 11 rest «, the rods 4 have a vertical transverse groove 13. On the loom frame is in the extension of the rod axis in a not shown in detail Way a stop 14 attached The rod is pushed back from the stop 14 into the tube 2, wherein the yarn enters the transverse groove 1.3. This becomes the wrap angle reduced in size so that the yarn can be pulled out of the small yarn with little tensile force.

Patent Attorneys Dipl.-fng. Horst Rose Dipl.-fng. Peter Kose!

7031265 09/18/75

Claims (3)

DlPL-ING, HORST ROSE 'DIPL.-ING. PETER KOSEL PATENT LAWYERS 3353 Bad Gandershelm, 21. April 1975 Posifech 129 Hohenhöfen5 Telephone: (05382) 2842 Telegram address: SIedpslent Bsdgandsrshsim Our file no. 18/37 ^ G 70 31 265.1
Aktiengesellschaft Adolph Saurer Protection claims 1 · Yarn clamp for weft yarn insertion organs such as rapier gates « Insertion needles and the like on weaving machines, characterized in that the clamp consists of a tube (1,2) with sloping surface (3) for the weft yarn (6) serving end face and one in the bore (2) of this tube with a radial distance on all sides from this Pipe held, protruding over the ramp surface (3) Rod (4) consists. 2. Yarn clamp according to claim 1, characterized in that that the rod (4) in the tube (1) is resiliently mounted on all sides in the radial direction. 3. Yarn clamp according to claim 1, characterized in that the rod (4) is longitudinally movable in the tube and has a transverse groove (13) in which the weft yarn (6) can enter. Patent Attorneys PH.-lng. Horst Rose ./,Ul.-lng. Peter Kos el Rö / Rg, Bank account: Norddeutsche Landesbank, Bad Gandershtlm branch, account number 22.118.970 Postal checking account: Hannover 66715 7031265 09/18 75