DE2026845A1 - Hit for ribbon looms - Google Patents

Description

PATENT LAWYERS

DIPL-ING. F. THIELEKE DR-ING. R. DÖRING DIPL.-PHYS. DR. J. FRICKE

BRAUNSCHWEIG MUNICH

Developp-Patent-Applications Establishment Vaduz (Liechtenstein)

"Bat for ribbon looms"

The invention relates to a racket for ribbon looms for Weaving of tapes with a continuous weft with a reciprocatingly driven beating comb for the lay-up of the Shot of the resulting tissue,

Racquets are known in which the striking comb is continuously Moved oscillating along a predetermined path in order to push the weft towards the tissue formed. With these clubs, the comb is too steeply inclined at the end of its path. That forces the heald frames to be far away to keep from the resulting tissue. In order to allow the passage of the needle which carries the weft, therefore, a considerable amount is required It is necessary to raise the heald frame using the dobby. This leads to a slow working speed.

The object of the present invention is to avoid these disadvantages and to design a racket in such a way that

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that the comb assumes a reduced inclination position, so that the heald frames are brought closer to the tissue can and thereby the same opening angle of the warp thread cause less lifting by the dobby, whereby an increased working speed can be achieved.

In order to solve this problem, I will mark the one mentioned in the introduction Racket according to the invention in that the striking comb on a first shaft is attached, gives way to swinging around its own axis and is elongated with its ends Lever is supported on a second shaft, the torsional vibrations executes around its own axis, so that the first shaft oscillates back and forth along an arc around the second shaft moved here and the beating comb a double oscillating movement issued, and that means are provided to set the striking comb in a reciprocating motion about the two shafts.

Suitable lifting arrangements allow the striking comb to swing to set both waves in motion.

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An embodiment of the racket designed according to the invention is shown in the drawings.

Pig. 1 shows a sectional view of what is designed according to the invention SOhlägers at along the line 1-1 in Pig. 2 trending Cutting plane.

Pig. 2 shows German racket according to Pig. 1 in vertical section.

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Pig. 3 shows a partial cross-sectional view of the racquet at FIG. 3 taken along line 3-3 in Pig. 2 running cutting plane.

As the figures show, the inventively designed Bat has a striking comb 1, which is fastened in a suitable manner replaceable to a support member 1 '* This support · Clied 1 * is attached to a first vibrating shaft 2 and moves t ;; it this. In the embodiment shown, the edge 1 is inserted into a seat of the support member 1 'and fastened by means of a plate 20 and screws 21 (Pig. 1).

.Die.Welle 2 is received at its ends in bearings 3 '(Pig. 3), which are each arranged at one end of a lever 3. These levers 3 bind attached with their other ends to a second vibrating shaft 4 and rotatable therewith. The second shaft 4 rotates in bearings 5 _f which are received in a fixed part b of the frame of a loom. The first shaft 2 rotates swinging back and forth around its own axis. At the same time, however, it also carries out an oscillating movement around the shaft 4 when it is rotated to and fro around its axis in an oscillating manner. '

In this way, the saw comb 1 can be given a double oscillating movement, which, as the following shows, a Enables improved in-porm hitting of the weft of the fabric.

The reciprocating motion of shaft 2 is controlled by a pair of lateral

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Licher lever 7 produces "each of which is firmly connected at one end to one end of the shaft 2 * while the other end" is in turn articulated to the end of a crank 8. This crank 8 is articulated at its other end in an eccentric bearing 9 which is fixedly arranged at one end of a first drive shaft 10. This first driving shaft 10 is supported from the fixed part "6 of the frames of the loom. The rotating reciprocation of the second shaft 4 by a pair of lateral W lever Liehe 11 generates. One each of these levers 11 is connected with one end to one end of the second shaft 4. The other ends of these levers 11 are each supported in one end of a crank 12, which in turn is received at the other ends in eccentric bearings 13. These eccentric bearings are arranged at the ends of the drive shaft 10 that are still free.

The example shown is the eccentricity of the eccentric bearing 13 smaller than the eccentricity of the eccentric bearing 9 * In addition are the two eccentric bearings 9 and 13 diametrically opposite. It still makes it obvious that between the two Eccentric bearings any displacements are possible in relation are reversed to the position shown, so that the second oscillating movement of the impact comb is carried out leading or lagging. Even the eccentricities themselves can vary depending on "Requirement to be changed.

A gear 14 is also attached to each drive shaft 10

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BATH ORIGINAL

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and via a toothed belt 15 geared to a corresponding one Gear 22 connected, which is mounted on a drive shaft 23 for small heads 24. This shaft 23 is of the Driven (not shown) motor shaft of the loom, which is equipped with the described beater.

The puncture of the racket designed according to the invention runs as follows »The two drive shafts 10 are set in rotation via the toothed belt 15. ■ The crank 8 swivels eccentric and the levers 7 generate back and forth torsional vibrations of the shaft 2, which extend around their own axis

and a corresponding first vibratory movement of the striking Comb 1 to generate this first wave 2. At the same time become over the cranks 12 and the lever 11 reciprocating torsional vibrations of the second shaft 4 generated, which are also around their run their own axis. These torsional vibrations generate over the lever 3 a second oscillatory or rotary movement of the first shaft 2, which, however, runs around the axis of the second shaft 4. '

This second oscillation of the first shaft 2 around the second shaft 4 gives the striking comb 1 a second oscillation which superimposes the first, explained oscillation, so that a movement is generated which gives a precise blow to the eye. How ^! As can be seen, the oscillation of the first shaft 2 around the second shaft 4 leads to a reciprocating movement along an arc of a circle. So that the axis of oscillation of the comb t

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. BATH ORIGINAL

moved in the same way, so that the comb 1 in its two End positions is kept much more upright (see Fig. 1). 'Tuck smaller inclination of the striking comb 1, which is due to the The mentioned change in the eccentricity and the mutual position of the eccentric bearings 9 and 13 can vary, allows the generation a greater impact. This smaller inclination favors a closer approach of the heald frame 25 to the Front end of the fabric 26 formed while maintaining the same opening angle of the warp threads 27 for the passage of the needle * who bears the shot. This significantly reduces the stroke of the heald frame and increases the working speed possible.

As can be seen from what has been said and the representations of the figures, It is significant that a new racket for looms has been created which has advantages over known designs offers and allows working at a higher speed. It is also understandable that: what is said and what is in the figures shown serves exclusively as an exemplary embodiment, and that changes are possible without affecting the essence of the invention deviating

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Claims (5)

Patent applications Π) Bat for ribbon looms for weaving ribbons with a continuous weft alt a reciprocating driven beater comb for beating the thrust of the resulting. Fabric, characterized in that the sleeping quay (1) is attached to a first shaft (2), which is oscillatingly rotatable about its own axis and is supported with its ends via elongated levers (7) on a second shaft (4), the torsional vibrations around its runs its own axis, so that the first shaft (2) moves back and forth and the impact comb issued a double shrinkage movement, and that means are provided to the Schlagkama (1) in a swinging motion around the both waves su Tersetsen. 2) Racket according to claim 1, d a d u rc h characterized in that the means which generate the reciprocating vibratory movement around the two waves (2,4), one for each end of the two shafts (2,4) Have levers (7; 11), which at one end with the respective associated shaft end and articulated to the other end End of each associated crank (3, 12) is connected, where- ' with the cranks with their other ends in eccentric bearings (9,13) are received, which feet are arranged at the ends of a drive shaft (10). , 009887 / 133S ^ 3) Racket according to claim 1 and / or 2 _9, characterized in that the two pairs of eccentric bearings (9 * 13) have a different eccentricity. 4) Racket according to one or more of claims 1 to 3 _9, characterized in that the two eccentric bearings (9 »13) are diametrically opposite one another. 5) Racket according to one or more of claims 1 to 3 _P daiMrch 'characterized ₉ that the two eccentric bearings (9 »13) are offset with respect to one another. BATH 009887 / 13Γ5