DE2129259C - Balloon limiter with threading slot for two-for-one twisting spindles - Google Patents

Description

The invention relates to a cylindrical thin-walled balloon limiter for double wire twisting spindles, with a threading slot running parallel to the spindle axis, with over the entire cylinder circumference of constant wall thickness, which is held at the lower edge in a also slotted ring, with on both sides of the Einfädelschlitzes vertically standing rigid support columns. It is known for two-for-one twisting spindles to use fully enclosed balloon limiters.

Threading the thread by hand is very time-consuming and causes considerable difficulties. in the In the case of automatic threading, pneumatic threading comes into consideration, their arrangement in non-automatic or semi-automatic machines is usually too expensive is.

Assuming that a slotted balloon limiter brings considerable operating advantages with it. various proposals have been made to close existing threading slot for the duration of the twisting process or only for the duration of the threading process üu open.

Among other things, it is known from French patent specification 1 582 136 to mechanically expand the balloon limiter in the area of its slot by means of a rod for the duration of the threading process and thus to enable the thread to be inserted . for this übe.giegen, the slot opposite ü ·. - Self-tensioning of the balloon limiter by means of a, · - Shear mechanism to close, the unrr.ittelbu; effective when the spindle brake is released; while the slot opens when braking.

Furthermore, a mutually de ^c Einfädelschll · - 2CS provided two-piece lock öekannt, w; Ches has a swivel bracket, with the pivoting of the two lock parts connected to one another. : ■ and the slit edges of the balloon limiter are pressed together, with which the slit is closed during the twisting process.

These known solutions are complex v :: on top of that, impede the operator when:: operating the spindle. On the other hand, it forms us. End of the operation of the spindle open slot K _: high-speed spindles a source of noise, which. ·: Noises a not insignificant part of the Cr. make up the total noise that is causing the machine to run. The striving therefore goes there ^; on the one hand the technical disadvantages c '.

Among other things, the German patent specification. 1510 782 a consisting of an elastic film Balloon limiter known, the edges of which overlap in the area of the threading slot, so that see the thread can be threaded between the overlapping edges. But this solution sets one sufficient compliance of the balloon limiter and is therefore proportionate in the case of rigid balloon limiters, e.g. 3. Made of metal, not applicable.

A comparable solution is known from German patent specification 1 129 093, according to which the filling slit is bridged by an elastic edge strip, the free edge of which rests against the inside of the balloon limiter with its free edge. In this solution, the direction of rotation of the thread within the balloon limiter is set to one direction of rotation.

Tests have shown that air is entrained between the balloon limiter and the delivery spool carrier by the balloon-shaped circular thread. As a result of their movement, air exits the slot at high speed, which creates a loud noise.

The object of the invention is, in the initially mentioned

«Wrote balloon limiter for two-for-one twisting, threading the thread through the bristles

«By taking measures which, on the one hand, allow a slot through

"Nter maintaining a Einfädelschlitzbreite usual Em significant advantage ° ^e ^ ^rtl ™" ^ng Jf _{ndc zv.}

^unl V ouc; rfi; ht hh; i ι Äcno then stands that bercus bestenena .. ο

then that

The invention provides a solution. that the easy can be. guide examples after

d ^ h'iii · from the outside through one along the one In the drawing are Ausführungsbeispieiu

Schl.i / edge attached bar is covered, whose "o the ^ invention dargeste It. It shows ^

Free longitudinal edge outside along the other slot- F - g I in «haub.ldhch.r Ja ^ Ji _

^! _kan u- of the balloon rests and at least .m delivery bobbin with protective pot ^HLRu ^ ^r \ _Einfä DEL

Area of the free longitudinal edge with elastic, flexible limiter with externally abgtaecKici

ic ·,; --- irt that they slit the thread when threading,

£ -: Ä to push the thread size away vcr-, ₅

Λ'Λνdifferent from the well-known Schhtzabdeckunterhgen cover ο ßm. ßallonbesren-

_tcn, the invention eht a cover from the outside Fig. 3 ^e "nen Teilsüimit By J ^ Cinen

-. that the width of the slit between the two balls and the area of its needle thread lo-v- ^ renzerränder with the necessary dimensions-> o two-part cover ^ "'^' Balionbczren-

, V. cn is retained. The realization that F. g. ^ J _n AS with a

_{b ,, iner} cover from the outside in the area of the zer in the area of his EmtadUsc ^ _

S - / it is a two-part cover of auuen α over the entire length of the slot

c-rj.jkcnde column of air builds up and as it were file _ Ausführunesbeispiel a ACR-id ": along the slot of the Innenmanteinäche Bai-, 5 Mf ^ J. ^1" ^ "^ EmßÄltaes by hollow

· ,, · ■, .- renzers closes, with which an air cushion covers part of the tiniauc.

_ς. -fen, so that the rotating Fadenbai- profile _tpi i; _o , cover of the threading

■ "" .. "teenommene air no longer on the contactor Fig. 6 is a e.nteihgc ^^. _{By a}

'',: Air meets the prerequisite for the creation of the slit from the outside in a tube cut

^ But there is a slight column of air that the slot of 30 BaHon limiter and _BaHonbcgren -

\., which is completely covered. where the cover ^F * f _R ⁷ _p S _se f _n e7Einfädelschr.tzes with a

, ·,., Lies close to the edge of the slot. zer in the area seintsjbin ta, _eisten .

:.. "C dikes effect can be erfindungsge.näß at cover v ° ^ Ussen by two ^ ^ ^ ^ ^ ^, n elnaangs balloon for ^V described η, _{1η κ} '? _{Ρ η 7 £ Γ} which, dab on the spindle plugged i ', ppeldfahtzwirnspindeln achieve thereby the 35 designated ^Β ^ ψ ™ ^ Ζ protective pot 3 comprises _r: mint slit from the outside by two in each case corresponds feed reel 2 differs om X _{L. "fo} hrungsbei-; _{r: S} of the two slot edges of the balloon the Ballonbegr.nzLr 1 spec. ^^ ! ■ ciestiatt ledges is covered with their free play ^a . ^us !> ⁿ ^ ^^^ " _{which is held in the ring 2} 4, came to rest against one another and at least in the with ^its _e ^ .f _a ^ ™ _h i _nengeste ll is fixed, in the area of its free longitudinal edge elastically flexible 40 on the semerside N ascnm fe * _{Tdl as dcs;} nd so as to the thread during threading minde- ^ au rungsbeispu.1 a r gp _{enUa h} ^ "ens locally to the strength of the thread push away SpmdePoa kjn real ^^^ ^ ^ ^ ^ ^ ^ _n

\ ermag _

In the first-mentioned embodiment, front-free edges can be de:

It can be seen that the bar is a strip of elastic material that is aligned with one another and that the free longitudinal edge is inside. By the support columns 7 and 8 two film closure are set on their shelf on the balloon limiter after strips 9 and 10, which is bent to hollow profiles on the outside, so a guide for are bent, the elastic with a certain width to ensure the Eh.INESS of the fadon . rest against each other. At the lower end the Fo-Irn case of the arrangement of a bar or in the 50 line strips 9 and 10 of brackets 11 and 12 are partial cases of the arrangement of two bars, which with their includes, whereby at this point the foils 9 and 10 free longitudinal edges to each other abut, can be pushed away from each other somewhat and with the further invention, the bar in each case a hollow profile clips 13 and 14 represent a loading guide, made of elastic material. This can be a closed hollow profile in the area of the support columns 7 and 8; It is also possible between each clamping edge of the film strips 9 and 10 to deform a film strip into one of the support columns 7 and 8 and the balloon limiter II hollow profile and its free edges and are tightened with screws 15, the ones on the balloon limiter and on its support columns firmly- lower screws IS at the same time the bracket and put. It is essential that the clamps 11 and 12 are used for tensioning each other, and that they are elastically flexible on the adjacent longitudinal edges the film strips 9 and 10 outside your at least locally by the strength of the thread of the Einfädeischliizes 6 in the balloon limiter 1 is able to push away. a certain width to each other. In a further embodiment of the invention, the thread can be seen in front of the film strips 9 and 10, so that the strip thread in each case as a bristle 65 down through the slit in which the strip is formed ¹ ; its bristles , with their free line strips 9 and 10 each locally Einden gripping in the thread area, the threading slot of the are pushed apart. It is thus achieved to cover balloon beginners, but due to their elasticity that the slot 6 is closed from the outside, to-

but a threading of the thread is immediately possible. When the suture is balloon-shaped inside the balloon limiter 1 circulates, the air is taken along accordingly. This creates a rotating column of air in the threading slot 6, the impact of the air moving in the balloon limiter on the free slot edges prevented.

The Fig.2 illustrates another solution in the one side of the threading slot 6 is covered from the outside by an elastic strip 16, the one side is clamped between the support column 8 and the balloon limiter 1. The free edge 17 runs bent outwards to make threading easier. The slot 6 is open inward and allows a column of air to develop inside the slot 6, so that no air to the outside flows.

According to Fig. 3, a strip 18 is fixed on each side of the threading slot 6 by means of the support columns 7 and 8, the free edges of the strips ao 18 abut one another, so that in turn the threading slot 6 is hermetically sealed to the outside, but at the same time the threading by pushing away the edges of the strips 18 is possible.

According to the embodiment according to FIG. 4 are film strips on both sides of the threading slot 6 19 bent to a U-shaped profile, the edges lying further out being strongly rounded to make threading easier. The wheels of the film strips 19 are each between the balloon limiter 1 and the support columns 7 and 8 and on the support columns 7 and 8 from the outside by means of clamping strips 20 held, in such a way that the film strips 19 abutted one another with a wide area genes, whereby a wide contact is maintained even if the slot 6 is small during assembly gig differs in width from the intended dimension

The embodiment according to FIG. 5 is the nacli Fig. 4 is similar, but differs therefrom in that profile strips 21 are provided, soft have a tubular cross-section and have clamping flanges 22 between the balloon limiter 1 and the support columns 7 and 8 are fixed.

They are in turn with a relatively large area against each other and prevent the Passage of air to the outside, but allow the thread to be threaded inwards.

The solution according to FIG. 6 is similar, in which but only one profile strip 21 covers the slot 6 from the outside.

In the embodiment according to FIG. 7, bristle strips 23 are attached to both support columns 7 and 8, which, engaging with their bristle ends, cover the slot 6 from the outside, the The tightness of the bristles is chosen so that air cannot escape, but the bristles when threading able to evade the thread. If necessary, only one bristle strip is sufficient free bristle ends rest against a slot edge and thus close the threading slot.

In all the embodiments shown, the outer cover of the threading slot 6 is the A column of air inside the slot allows the impact of the balloon limiter prevents moving air on the free slot edges.

1 sheet of drawings

Claims (5)

Patent claims: 1. Cylinder jacket-shaped thin-walled balloon limiter for two-for-one twisting spindles with a parallel to the spindle axis Threading guard with the same wall thickness over the entire circumference of the cylinder, the one at the bottom Edge is held in a also slotted ring. with on both sides of the threading slot vertical stc ..; nd rigid support columns, characterized in that the threading slot (6) from the outside through a strip (16; 21) fastened along one edge of the slot is covered, the free longitudinal edge of the outside along the other edge of the slot of the balloon limiter (1) rests and is elastically flexible at least in the area of the free longitudinal edge in such a way that that they measure the thread when threading at least locally to push away the thread thickness (Fig. 2.6). 2. Cylinder jacket-shaped, thin-walled balloon limiter for two-for-one twisting spindles with a threading slot running parallel to the spindle axis, with over the entire cylinder circumference constant wall thickness, which is held in a also slotted ring at the lower edge is, with vertical rigid support columns on both sides of the threading slot, thereby characterized in that the threading slot (6) from the outside durcii two each along the attached to both slit edges of the LJa'.lon limiter (1) Strips (9. 10; 18; 19; 2 *; 23) covered is, which rest against one another with their free longitudinal edges and at least in the area of their free Longitudinal edges are elastically resilient in such a way that they at least locally the thread when threading to push away the strength of the thread (Fig. 1,3,4, 5,7). 3. balloon limiter according to claim 1, characterized in that the bar (16) is a strip is made of elastic material and its free longitudinal edge (17) in connection with its abutment on Balloon limiter (1) is bent outwards (Fig. 2). 4. balloon limiter according to claim 1 or 2, characterized in that the bar (9,10; 19; 21) each is a hollow profile made of elastic material (Fig. 1,4,5,6). 5. Baiion limiter according to claim 1 or 2, jo characterized in that the bar is designed as a bristle bar (23), the bristles of which, engaging with their free ends, cover the threading slot (6) of the balloon limiter (1) (F i g 7).