DE1076586B - Weft insertion device for rapier shuttle looms - Google Patents

Description

The main patent relates to a weft insertion device for rapier shuttle looms, in which the Protect is guided in guide rake and receives its drive continuously by means of compressed air, wherein on a frame-like gripper, which has baffle walls arranged in close succession between its longitudinal legs, from above or below or from above and below when passing through the compartment, at least at a time a jet of compressed air emerging from relatively stationary nozzles, which are accommodated on the teeth of the guide rake, which are designed as hollow bodies acts. According to claim 2 of the patent, the compressed air supply can be regulated and is either closed individual teeth, groups of teeth or all teeth or their nozzles.

In contrast, the invention represents a further development with the aim of a special structural one Design of the compressed air regulation, with the compressed air similar to a wandering field on the gripper guards during its passage through the subject.

Numerous facilities are known from the control technology, in which one is among other things also for Regulation of compressed air operated by a valve. However, these facilities are not suitable for the Solution of the problem on which the invention is based, since the structural design of such devices a regulation of the compressed air, as required in the weft insertion device according to the main patent will not allow.

Even the one for compressed air regulation in weaving machines with pneumatic deflection of the shuttle The proposed measures cannot be used here, as they relate to pneumatic knock-off devices Obtain with a single pulse and only provide the required amount of compressed air by changing the capacity of the air chamber.

According to the invention, the pressure air supply is regulated by a slot-like, round or similarly shaped openings provided movable slide, which is located within the as part of the Guide rake attached to the teeth and connected to the compressed air supply chamber and the corresponding ones fitted over the teeth in the compressed air supply chamber or gradually releases openings for the passage of compressed air as it moves closes again.

In Figs. 1 to 5, three embodiments of the device according to the invention are shown.

Fig. 1 shows the device with a round slide,

Fig. 2 the device with a round slide in section along the line AB in Fig. 1,

Record entry facility
for rapier shuttle loom !!

Addendum to patent 1,024,027

Applicant:

Research institute for textile technology
in the area of the ministry

for light industry,
Karl-Marx-Stadt, Annaberger Str. 240

Anton Priller, Karl-Marx-Stadt,
has been named as the inventor

Fig. 3 shows the device with a semicircular slide, two rows of openings and in the direction of the Compressed air outlet staggered nozzles, partly in section,

Fig. 4 the device with a semicircular slide in section along the line AB in Fig. 3,

Fig. 5 the device with a flat slide, which consists of individual, preferably articulated interconnected Sharing consists.

The compressed air supply chamber 1 is provided with the teeth 2 of the guide rake for the shooter 9, whereby the compressed air reaches the nozzles 3. she preferably has a round cross-sectional shape.

In its arrangement in the compressed air supply chamber 1, the slide 4 is adapted to this cross-sectional shape and is therefore either round or semicircular. The slider 4 presses radially against the Druclduftzuführkammer \, in order to achieve a good seal. It can consist of one piece or of several parts 4 α connected to one another in the manner of links (Fig. 5) and can be moved back and forth in the longitudinal direction and also rotated laterally.

Both the slide 4 or the individual parts 4a of the slide and the compressed air supply chamber 1 have openings 5, 6 in the form of air ducts, which in the compressed air supply chamber 1 are arranged exactly above the cavities of the guide teeth 2.

909 757/177

Thin, flat leaflets 7 can also be inserted into the openings 6 of the slide 4 Have holes 8 for the compressed air to pass through (Fig. 2). The papers? are on the compressed air supply chamber 1, are due to the pressure the compressed air pressed firmly against them and therefore seal particularly securely. The leaflets 7 can also be resiliently fastened in the openings 6 of the slide 4 in a tongue-like manner.

The distances between the openings 6 of the slide 4 are chosen so that during the longitudinal movement of the slide the openings one after the other or in groups via the openings 5 of the compressed air supply chamber 1. The openings 6 of the longitudinally moved in the desired direction Slide 4 accordingly pass through the openings 5 of the compressed air supply chamber 1 and release these for a short time, but only individual openings reach each other, while all the others Openings are sealed during this time. This simple way prevents compressed air from coming out the entire nozzle 3 can exit at the same time.

Has the slide passed all openings 5 for the movement of the shooter from one side to the other, i. H. opened and closed one after the other, it becomes the distance just covered for the shooter's movement Moved back in the opposite direction. This game is repeated after every second shot.

The movements of the slide 4 are coordinated with the barrel of the shooter 9 so that there is always the Slide 4 allows the nozzles 3 to act, in the area of action of which the shooter 9 is located.

There are also other arrangements of the openings 6 in the slide 4 and the openings 5 in the compressed air supply chamber 1 possible.

Thus, the slide 4 can be provided with two rows of openings 6 arranged lengthwise next to one another be. He is then moved along the first row and then rotated so that the next Shot the second row with simultaneous backward movement of the slide 4 comes into play. In this case, for example, the nozzles 3 on the teeth 2 of the guide rake in the direction of the Compressed air outlet arranged offset so that only every second nozzle 3 acts in the same direction. Accordingly, in each row of the slide 4 openings 6 are provided for only every second nozzle (Fig. 3).

In the case of semicircular slides 4 '(Fig. 4), these have along the compressed air supply chamber 1 in its upper 5 " Part, lying on both sides at the same height, stops 10 to limit the lateral rotation of the Slide 4. The semicircular ones have the advantage over the round slide that material and weight saved and an exact limitation of the lateral rotation is possible.

It is possible that the compressed air supply chamber 1 has an angular cross section. In this case it is the slide 4 ″ is flat and consists of individual, preferably articulated, interconnected Parts 4 a and is arranged on the bottom surface of the compressed air supply chamber 1 (Fig. 5). The better one For clarity, the slide is shown removed from the floor surface in the illustration. To as with round or semicircular slides by turning movement out of the effective area of the openings come, the flat slide 4 can be moved in the transverse direction in addition to its longitudinal movement. 11 with a guide bar for the slide 4 "is designated.

Claims (6)

Patent claims: 1. Weft insertion device for rapier shuttle looms, in which the shooter is guided in a guide rake equipped with nozzles and his drive is uninterrupted by means of Compressed air supplied to this rake receives, according to claim 2 of patent 1 024 027, characterized by a movable one provided with slot-like, round or similarly shaped openings (6) Slider (4, 4 'or 4 ") which is inside the as part of the guide rake over the teeth (2) attached and associated with these printing . air supply chamber (1) is arranged and the above the teeth (2) in the compressed air supply chamber (1) attached corresponding openings (5) during its displacement gradually for the passage of compressed air releases or gradually closes again. 2. Device according to claim 1, characterized in that that the slide (4) is made from one piece or from individual parts (4a), each tnin- ■ have at least one opening (6) and are preferably connected to one another in an articulated manner, consists. 3. Device according to claims 1 and 2, characterized in that in each opening (6) 'of the slide (4) a leaf (7) is inserted, which has a hole (8) for the passage of the compressed air. · 4. Device according to the claims! and 2, characterized in that the compressed air supply chamber (1) is round or square. 5. Apparatus according to claim 4, characterized in that in the semicircular design of the Slide (4 ') the compressed air supply chamber (1) in its upper part, on both sides at the same height lying, has stops (10) to limit lateral rotation of the slide (4). 6. Apparatus according to claim 4, characterized in that that with a flat design of the slide (4 ") and angular cross-section of the Compressed air supply chamber (1) a guide strip (11) for the slide (4 ") is provided. Considered publications:
Patent No. 12256 of the Office for Inventions and Patents in the Soviet Occupation Zone of Germany: 1 sheet of drawings © 909 757/177 2.