DE2934694A1 - THREAD GUIDE FOR KNITTING MACHINES - Google Patents

Description

DR.-ING. DIPL.-ING. Λ. SC. DIPL .- "'Hvs. C ¹ R. OIPL.-PHYS. DIPL-PHYS Mt

HÖGER - LEGAL RIGHT - 5RIESSBaCH - HAECKER BOEHME

PATENT LAWYERS IN STUTTGART _ _. _. ^ _n . ,

A 43 588 b Applicant: Terrot Strickmaschinen GmbH

^b - ¹⁷⁷ 2 Dürrheimer Str. 12

July 23, 1979 ° 7000 Stuttgart 50

Description Thread guide for knitting machines

Especially in knitting machines with a large number of knitting systems it is with the conventional thread guides problematic to bring the thread to be inserted safely under the hook of the knitting needles. This is especially true for Knitting machines equipped with compound needles, since the needle tongue is missing on a compound needle, the tongue of a The latch needle presses the newly inserted thread under the needle hook when it closes.

Attempts have already been made to insert the thread into the small available zone with the help of tubular, a to insert conical channel forming thread guides, but these thread guides have not proven, because in the conical channel form accumulations of pluses, and knots and thick spots in the thread lead to thread breaks; in the end threading the thread into the known thread guides is difficult.

The invention was therefore based on the object of providing a thread guide for knitting machines, in particular for circular knitting machines with compound needles, which is a trouble-free one even with knitting machines with a high number of systems Feeding of the thread permitted. To solve this problem, the invention proposes to use the thread guide

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b - 177

July 23, 1979 - 4 -

one that forms an acute angle that opens downwards Provide guide channel for the thread, the base of which is sloping downwards towards the needle hook of the driven out Needles runs and ends slightly below the hook of the just driven out needle into which the thread is inserted shall be. In order to avoid thread breaks as a result of knots and thick spots in the thread, it would be sufficient if the thread guide is only open at the bottom in the front area of the guide channel under this, but a preferred embodiment of the thread guide according to the invention is on the The bottom is essentially completely open so that fluff can fall out downwards.

So that the fadery can fall out downwards, it is recommended yourself, below the bottom of the guide channel; to provide a crossbar, which is a sufficient distance from the Leilrinnengrund has and in particular is arranged at a distance from the front end of the guide channel, so that it has the passage not hindered by knots and thick spots in the thread.

In a preferred embodiment of the inventive yarn guide out of the guiding chute another thread guiding member is provided which is arranged nnengrunds such something unterhaxS ^ I ^ SiB ¹¹ Leit ^r *, that the supplied thread is applied only on this thread guiding member and the front end of Leitrinnengrunds. This further thread guide element is preferably located in front of the guide channel and somewhat below the extension of the guide channel base.

The thread guide according to the invention can be particularly cheap then produce when the guide channel from a sheet metal stamped and bent part is formed. Is the aforementioned crosspiece

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if desired, this can be formed by a bent tongue of the stamped and bent part, so that it is not necessary for production still requires an additional part to be attached.

In order to avoid excessive deflection of the thread to be inserted and leaving the thread guide, it is advantageous to to arrange the thread guide in such a way that the bottom of the guide trough forms an acute angle with the direction of travel of the needle contour forms, so that the thread already has a component in the thread guide in the running direction of the needles.

Since the thread guide according to the invention guides the thread to just below the hook of the expelled knitting needle, recommends it is necessary to couple the thread guide with the cam part causing the needle drive, in particular with this to connect firmly what z. B. can be caused by the fact that the thread guide storage with the usual adjustment slide of the lock in question is connected. This ensures an optimal position of the thread guide relative to the driven knitting needle ^ under whose hook the thread is to be inserted.

Other features, details and advantages of the invention emerge from the following description and the accompanying drawings of a preferred one Embodiment of the thread guide according to the invention in connection with a circular knitting machine, the knitting needles are designed as compound needles; show it:

Fig. 1 is an axial section through the circular knitting machine, but only those parts were shown, which are necessary for an understanding of the invention;

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July 23, 1979 - 6 -

Fig. 2 is a perspective view of some cylinders and Plate needles of the circular knitting machine according to FIG. 1 in the area of a knitting system in connection with a preferred embodiment of the thread guide according to the invention, and

FIG. 3 shows a plan view of the thread guide according to FIG. 2.

1 shows a needle cylinder 10 with a font of cylinder needles 12 designed as compound needles, which can be driven out in the usual way by cylinder lock parts 14 and withdrawn. The height of the cylinder needles 12 the point of the highest sprout can be adjusted by means of an adjusting slide which can be moved and adjusted in the vertical direction 16 select which at least the cylinder lock parts responsible for the expulsion of the cylinder needles 12 wearing. Furthermore, a fontur of plate needles 18 is provided, which interact in the usual way with the cylinder needles, are stored and driven out and withdrawn in the radial direction, so that there is no further explanation of the corresponding parts of the circular knitting machine is required. The plate needles 18 are also designed as compound needles.

According to the invention, a thread guide, designated as a whole as 20, is attached to the adjusting slide 16 and has a thread eyelet 22 and a guide channel part 24 designed according to the invention. The latter should now be based on FIGS. 2 and 3 will be explained in more detail.

The guide channel part. 24 is designed as a stamped and bent sheet metal part and on a support arm 30 has a roof-shaped sheet metal angle 32, the inside of which forms a guide channel 34.

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A 43 588 b

^b ~ ¹⁷⁷

July 23, 1979 - 7 -

On one side of the sheet metal angle 32, a web 36 is formed on the rear edge in the lower area, which after is angled on the inside and its free end preferably extends through an opening 38 in the support arm 30.

According to the invention, the thread eyelet 22 is arranged relative to the ridge or bottom 34a of the guide channel 34 so that the thread to be inserted The thread 50 runs at an acute angle to the guide channel bottom 34a and only in the front, lower area the bottom of the guide trough comes to rest against the guide surface.

In Fig. 2 that cylinder needle was designated by 12 *, which is currently in its highest position. FIGS. 1 and 2 now clearly show that the front end 24a of the guide channel parts 24 protrudes into the area just below the needle hook of the fully driven cylinder needle 12 ′, so that the cylinder needle continuing in the direction of arrow A (see FIG. 2) in position 12 'with the needle hook the thread 50 can safely grasp.

Since the guide fin part 24 is open at the bottom according to the invention, no lint can accumulate in it, and there the thread 50 can move downwards, knots and thickenings in the thread cannot lead to a thread breakage. Finally prevented the web 36, so that when the thread 50 becomes slack, it can emerge from the guide channel part 24.

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Claims (9)

DR.-ING. DIPL-ING. »Λ. SC. DIPL ..: '. 1 / S. C H. DIPL-PHYS. DiPU-PHYS. OB HÖGER - STELLPECHT -3RIESSS / \ CH - HAECKER BOEHM PATENTANWÄLTE IN STUTTSART 2 93 A D A 43 588 b Applicant: Terrot Strickmaschinen GmbH b ~ 177 Dürrheimer Str. 12 July 23, 1979 7000 Stuttgart 50 patent claims 1. Thread guides for knitting machines, in particular for circular knitting machines with compound needles, characterized by a guide channel (34) which opens downwards at an acute angle, the base (34a) of which runs obliquely downwards in the direction of the needle hooks and below the hooks of the driven needles ( e.g. 12 ¹ ) ends. 2. Thread guide according to claim 1, characterized in that it is open on its underside below the guide channel (34). That below the ground (34a) of the guiding chute (34) a transverse web (36) is provided 3. Thread guide according to claim 2, characterized. 4. Thread guide according to one or more of the preceding claims, characterized in that in front of the guide channel (34) a thread guide member (22) is provided, which is slightly below the extension of the guide channel base (34a) is arranged. 5. Thread guide according to one or more of the preceding claims, characterized in that the guide channel (34) is formed by a shaped part (24) which is approximately triangular in plan view and in side view. 130012/0064 " ² " ORlGlMAL mSPEC- A 43 588 b b - 177 July 23! 979-2-2934694 6. Thread guide according to one or more of the preceding claims, characterized in that the guide channel (34) is formed by a sheet metal stamped and bent part (24). 7. thread guide according to claims 3 and 6, characterized in that that the transverse web (36) is formed by a bent tongue of the stamped and bent part (24). That the basic routing run (34a) forms 8. Thread guide according to one or more of the preceding claims, characterized in that with the running direction (A) of the needle bed (12) an acute angle. 9. Thread guide according to one or more of the preceding claims, characterized in that it is connected to the The lock part (14, 16) causing the needle ejection is firmly connected. 130012/0064