DE1710268A1 - Device for forming the weft in looms with bobbin-less shuttle - Google Patents

Description

Giorgio AdoIfο GRANDI
Via Muratori 5/3 - Bologna (Italy)

"Device for the formation of the Sohv ..:> _ as in looms with bobbinless

The present invention relates to a device for forming the weft in looms with spoolless guessing.

The main aim of the invention is the ι Solution to the problem of the formation of the weft in looms in general, in which bobbinless guards are used be, for what purpose according to the invention a device is created that has a very high Schftt-

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BAD OfHQlNAL

zen speed without operational breaks of the contactor and thus making it possible to achieve high production speeds for tissue.

Another object of the invention is the use of organs with particularly small dimensions and low weight, so that the slightest moments of inertia occur during their movements and therefore a very low weight for them great speed can be imposed.

Another aim of the invention is its application to looms on which several fabrics,

which are also different in the shot and which are arranged along the ™ Schatzenffl.hrungabahn, are generated «

Another object of the invention is to provide a device for forming the shot, which for the production of various high tissues on one The same loom and several fabrics on one febstuhl is customizable, reducing the area of use is significantly expanded on one and the same machine.

These and other goals, which can be clearly seen in the following description, are included ™ the inventive device for forming the shot achieved, which is characterized in that it is in a loom with a shuttle guide one in this Guide running slots, which are provided with pliers for holding and transporting a weft thread end is, a firmly connected to the guide and along the guideway of the shooter in a relation to the direction of movement of the shooter in front of the entrance section

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of the llettenfach arranged distributor member, one of wedge for the forceps jaws carried by the organ, Devices carried by the distributor element for clamping the weft thread end between the pliers jaws when these are spread apart by the wedge, so that the weft thread end between the jaws Is pinched as soon as the treasure is over the wedge moved out, facilities located next to the distribution organ for cutting off the thread captured and guided by the pliers after it has been removed from the chain compartment has stepped out, a removal organ for the end of the thread held by the pincers of the treasure, which Take-off device along the track guide of the switch in train is arranged on the direction of movement of the shooter behind the exit portion of the compartment, one of the Removal organ carried expanding wedge for the forceps jaws and organs attached to the guide for holding the plague thread end released due to the spreading apart, having.

Other features and advantages are clearer the following description of a preferred embodiment of the device according to the invention, which is shown schematically, for example and without limitation, in j of the accompanying drawing, in which:

Pig. 1 is a equipped with the erfindungsgemftssen apparatus for forming the weft dog loom in vertical section, _w obei the main parts of the loom under the conditions tor the direct

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early weaving of two independent fabrics are shown \

Fig. 2 is a schematic plan view of a part the reed holder disc of the loom, whereby forming the device according to the invention essential organs are highlighted in their location}

Pig. 3 in vertical partial section the distributor member in the

Moment in which there is a treasure in his ™ area is located;

Pig 4 a view of the weft end pick-up member as soon as the shooter is in his area
is located;

5 shows a side view of one with the one according to the invention Device cooperating slots;

fig. 6 the same shooter in plan;

7 in side view, the pliers which are arranged on the slitting;

W 8 is a view of the same part from the front with a cross section of Sch & tzens.

9 shows the wedges mounted on the distribution and removal elements in their alignment with the tongs shows and

10, 11 and 12 are schematic plan views of the sequence of the device according to the invention
operations carried out.

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According to the drawing, the loom from a foundation 1 and a vertical drive shaft 2 which is driven by the motor 3 and meshes via the gear with the gear 5 having internal teeth, lcheB _we in the lower part of a sleeve-shaped part 6 with a vertical axis is disposed, which is assigned outside a coaxial storage column 7 and is set in rotation in this way. A thrust bearing, which takes up the weight of the sleeve 6, is designated by the reference numeral 6. This sleeve is circumferentially provided with a step d or ring bracket 9, which lies in a grinding plane in relation to the horizontal, so that it forms an inclined support on which the sliding disc, which is essentially coaxial to the rotating sleeve, rests by means of its projection 3 10a. This disk is provided with the radial ridges 11 along at least one circular arc and, in the case shown, on two separate, successive circular sectors, each of which is smaller than a semicircle. With this rotating sleeve, a magnet holder arm 12 is fixedly connected to its | The end carries an electromagnet 12a and is counter-loaded at 13. The electromagnet, which rotates in a non-rotatable manner with cbr from the shaft 2, is located opposite the contactor arranged in compartment 15, which in turn is set in rotation.

The treasure. H runs in the Hingftthrung 16. With 17 the strands are designated, old 18 the Hing of the

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Lower bed with distribution combs for the warp threads 19, with 20 the Vfebkämme, with 21 the fabric formed, with 22 the slip rings for the electrical connection and with 23 the associated brushes. At 24 there is one Device for preventing the rotation of the reed support disc 10, which however is able to to carry out a rocking movement, denoted by 25 the ring of the top bed, 26 the winding rollers, 26a the distribution rollers, with 27 the outer skirts, with 27a a thread brake, which is placed between the skirt 27 and the distributor ^ lervorrichtung is used, with 28 the yarn distribution device in their entirety, with 30 the scissors and with 31 the receiving member for the weft thread end. at Consideration of the details of the parts described so far is firmly connected to the stationary frame ^ essentially vertical guide 24a can be seen in which a roller 24b engages on the reed retaining disc 10 attached and freely rotatable about its own axis, which runs through the seesaw center. The one with the Roller 24b cooperating guide 24a prevents rotation of disc 10, but allows it performs a vertical oscillating movement.

The outer ring rank 10b of the disc 10 forms the inner wall of the channel-shaped ring guide 16, the Outer wall 10c is formed by an angular profile with a circular circumference, which is provided with organs known per se is attached to the Riedhalterungsscheibe 10 in the peripheral zone. This way it forms the top

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Plane of the teeth of the combs 11 the bottom of the guide 16 of Sagittarius 14.

The shooter 14 has a shape similar to the known shape of the treasures with a coil. It is preferably very light in weight and has such transverse dimensions that it can pass through the guide 16 without friction. The slot has inside with respect to the circular guide 16 some cores made of magnetizable material, which are indicated by dashed lines with 14a. Next s, the shooter has a vertical groove 14b λ at the top, in which, with organs 14g known per se, a pair of pliers

14c is attached, which consists of two vertical elastic ™

with lamellae or jaws 14d, the / a zone outside of the groove 14b are mutually in contact and form the clamping part of the pliers. The upper edges of the Lamellae 14d are spread apart and in this way form a receiving end 14e, which is the introduction a spreader between the two lamellae facilitated.

Furthermore, on the outer wall is that of the two

the slats 14d, which points outwards in relation to the guide 16, a horizontal recess or RiI- ( Ie 14f is provided at the level of the passage zone between the two slats. Veiters, the slats have a rounding 14h at the front and back for the arrangement of the Fadens, which will be described in more detail later, all those organs will now be described in detail which

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directly with the guessing 14 during its movement the automatic formation of the shot cooperate. These organs have already been mentioned and consist of the Thread distribution device 28, the cutting scissors 30 and the receiving member 31 for the weft end.

The distribution device 28 is located along the ring duct 16 and in the direction of rotation of the pouring 14 seen, in a zone, slightly in front of the zone at which the strands 17 carrying the threads begin, wel-

Before threads in a known manner the chain compartment 15 form. The distributor consists essentially of one

™ console-shaped block 28a, which from the vertical support 28b is carried, the profile part forming the outer wall of the guide 16 with organs known per se 10c is attached. In this way, the distributor 28 is firmly connected to the Riedhalterungsschexbe 10.

The upper part of the block 28a extends horizontally to the middle of the drive 16 and thus comes but this to lie. In this zone, this part carries a blade-shaped one by means of organs 28c known per se Part 29, which lies in a vertical plane and has a wedge-shaped profile. This blade points a constriction 29a in its rear zone. Below the blade is further provided with a hole 29b in its front zone. The height at which the blade 29 is arranged in relation to the plane of the guide 16, is chosen so that the blade is as soon as the treasure 14 passes under her, from her misery

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starting 29a, gradually between the two, pushes in the jaws of the pliers 14c, which form the elastic lamellae 14d, which is carried by the shooter, and spreads them apart, which process is supported by the opening 14e. Furthermore, the hole 29 "b is in relation on the level of the guide 16 at the level of the Bertthrungszone of the two elastic lamellae and the rounded portions 14h.

In the lower part of the block or console ι

28a two channels 28d and 28e are formed which converge against the guide 16 and are in a plane "

parallel to the plane of the guide 16 at the level of the contact zone of the two elastic lamellae 14d and the hole 29d. Of these channels, the inclined channel 28b forms a guide for the incoming thread 27b from the skirt 27, the channel 28e, which runs radially with respect to the ring guide and is aligned with the hole 29b when passing the gate, forms the seat in which one in the longitudinal direction Rod or rod 32 runs. The outlet opening of the guides 28d and 28e on which the ring guide 16 side facing are so close together as <possible. At the end pointing towards the blade 29, the rod 32 is expediently designed, for example, in the form of a fork or a groove 32a. At the opposite end protruding from the body of the console, the rod 32 is articulated to a V / arm lever 33 which is articulated at 33a to a bracket or protruding support 34 which is attached to the upper

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part of the console 28a is attached. This articulation takes place through the engagement of a button associated with the end of the rod 12, which is known per se, into an eyelet 33b at the end of the lever 33. The spiral spring 37, which is coaxial with the rod and between the console 28a and the washer or the hinged stop 32c of the rod S2 is pressed together, holds the latter in the normal position retracted into the interior of the channel 2öe. The lever 33 is extended beyond its fulcrum 33a with an extension 33c which is angled with respect to the lever 33 and at the top of its free läiäe with a

P seat 33d is provided, which is intended to attack a stop 35 carried by the hanging of the upper bed 25 or at least firmly connected to it. This stop can be adjusted in height in a manner known per se. Wei ^ _it is seen, for example in the region of Velcro times immediately before Cr strands 17, immediately behind the distribution 2NC in the rotational direction of Schatzen3, the scissors ju RTTR the cut provided the introduced weft. It consists of a first blade 30a, which is rigidly attached to the body of the distributor 28 in a vertical position, and a joint that is hinged to the blade 30a.

* gene blade 30b. This counter blade 30b is exposed to the action of a tension spring 30c anchored on the distributor body, which keeps them spread away from the blade 30a. The counterblade 30b also has a seat 30d, which when lifting the Eiedhalterungsscheibe in a manner analogous to how the lever 33c strikes the stop 36, which is on Ring 25 is attached and also known per se

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Way can be adjusted in height, in any case the contact with the counter blade during lifting the Riedhalterungsschexbe before the Bertthrung between the approach 33e and the stop 35 assigned to it takes place.

The receiving member 31 for the weft thread end is along the king guide 16 fttr the slots just below the zone in which the strands 17 are located, arranged and consists of a console 31a, which protrudes over dar! Guide 16 and with itself ^

known organs on which the outer wall of the guide 16 forming angle profile 10c is attached. The position of this console along the guide can be known per se Modified way by sliding them between the pair of parallel guides 31b and in the desired manner Position determines in this way the receiving organ in the most expedient position, depending on the width of the fabric to be woven.

At the end of this console a U-shaped bracket 31c is attached with organs known per se, which consists of consists of two symmetrical parts, one facing each other on the | Plane of symmetry and along the vertical center line of the j Guide 16 with screws 31 are assigned. These parts are clamped between a vertical wedge blade 31 d, the profile of which essentially corresponds to that of the wedge 29. This wedge is tapered upwards at the back and extends below between the legs of the U-shaped bracket. At the Two horizontal slats 31f are attached to the outer end of the legs of the bracket, which are in relation to

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extend the stirrup backwards, i.e. in the direction from which the shooter comes, and in this direction converge until they come into contact with one another in a zone behind the wedge 3Id in the region of the path of the tongs 14.

The lamellae 31f are also spread apart behind their contact zone and form a receiving end 31g.

This el _a stischen 3 If fins are with respect to the plane of the guide 16 lh the height of the mutual contact zone of the clamp 14c of protecting 14a forming resilient blades 14d. The protruding part of the wedge 31d only engages in the upper part of the contact zone of the elastic lamellas 14d in order not to damage the end of the weft thread in the opening phase of the pliers 14c.

The operation of the device is described below.

When the drive shaft 2 rotates, it sets the sleeve 6 in rotation via the gears 4, 5. The Kied holding disc 10 running on the inclined guide 9 is prevented by the device 24 from rotating with the sleeve and is in a circular oscillation-like movement offset. This means that every egg tooth is between two boundaries moves up and down. The contactor 14 lies in the guide 16 acted upon by this oscillating movement; but from electromagnet 12a synchronously old this oscillation

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"movement and therefore indifferent to this in one Circular motion with it and its with essentially Movement path subjected to uniform speed lies in a horizontal plane that is approximately the corresponds to the lowest position of the guide 16.

At the end of the cycle preceding the cycle described here, the thread coming from the skirt 27 emerges with its free end from the channel 28d. In the case of the contemplated herein provided with two Ried arcs machine which can weave two fabrics simultaneously, the Sweethearts is in the above-mentioned Au μ genblick along the guideway in the diametrical in relation to the manifold 28 position, while the reed holder disc 10 is raised from the considered part of the distributor 20, so that the beginning of the jamming of the weft on the part of the comb 11 against the tissue is initiated. Shortly beforehand, the stationary stop 35 comes into contact with the seat 33b, whereby the rod 32 is advanced in the channel 28θ. With its fork-shaped end 32a, this rod pushes the thread 27b forwards immediately after it emerges from the channel 28d until it pushes it into the hole 29b of the wedge 29. I.

When the reed support disc is lowered again 10 and when the treasure approaches the Rod 32 is retracted into channel 28a due to the action of spring 37 and is again ready to

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to repeat the process of feeding the thread for the following cycle »

As soon as the shooter arrives in the area of the distributor 28, the blade wedge 29 gradually slides between the slats Ud of the gun Hc and the gun bends these apart.

As the shooter continues to advance, the two slats run along the two opposite surfaces of the wedge to hole 29d. Here the path of the blades is of _a length Z 14c cut by the yarn, which was inserted at the exit of the duct 28d as previously described with its end in the hole 29b. Since the elastic pressure of the inner lamella of the pliers on the wedge does not allow the end of the thread clamped between the inner lamella and the wedge to slip out of the hole and, on the other hand, since the scissor moves further, the front band of the outer lamella pushes the forward movement thread in front of him, which moves around in this way and unwinds further loads from the buck 27.

As soon as the two lamellas have passed the wedge 29 over the entire contact zone, they clamp the Thread in near the end and allow the now free end to flow out of the hole 29b. Of the In this way, the thread remains firmly gripped because its end is in the opposite direction to the direction of movement of the Protection is thrown

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e is inserted into the rounding Hh and lies to the rope in the protective groove Uf of the outer lamella of the chords. The slot moves forward in the chain compartment and when it comes out of this it is necessary to that the weft thread is captured by the receiver, then the thread must be cut in the area of the entry zone of the compartment. For this purpose the admission * organ 31 and the scissors 30 are provided.

As far as the scissors 30 are concerned, the seat 30d of the (rain blade 30b, as on the entrance as e it e raise the reed support disc, with the stationary J

Stop 36 in contact, causing the counterblade to follow is rotated at the bottom against the force of the spring 30c and '

closes on the fixed blade 30a and thereby cuts the thread.

The end section of the lifting movement of the reed holding disc 10 leads in turn to the start of the cycle, again the thread is pushed through the rod 32 into the hole 29b.

Equilateral will be on the exit side as soon as

der Sohfttae in the area of the collecting organ 31, ^ and Ia his "Sanfee Ho pinched the end of the shop, but the sings the receiving end 31g between the two *

Lamellas 31f, wedged in with the thread being held. she thus reaches sum blade wedge 31d, which is located between the slats Ud forming the chants Ho. tuck Leslie © are spread apart and release the thread end, which, however, is covered by the elastic lamellas

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J1f, which is located after the passage of the pliers of the Scholz touch again, is held. The archer, who has now been freed from the thread that has been carried along, sets his speed on this Move on without a break for the subsequent work steps to introduce the shot. In the case of the described Machine are for these operations, as two fabrics are woven, another distributor and receiver that are designed analogously to the preceding ones and in diametrically opposite positions to those described required lying down.

™ In order not to damage the weft thread section, which

ψ sere blade of the forceps 14c rotates to suspend an excessive Strossbeanspruchung when the latter formed at high speed on the recording forceps through the fins 31f impinges, suspend, a horizontal cavity Hf is provided which receives the thread.

The invention described can be modified and varied in many respects without thereby To exceed the scope of the invention, the invention can for example not only in round looms, but also in long looms, parallel looms and the like. be turned. It can also pass through all individual parts other technically equivalent parts are replaced

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Claims (6)

PATENT REQUIREMENTS 1. A device for forming the weft in Ytebstühlen with bobbinless * shooters, characterized in that it is in a loom with a guide (16) a treasure running in this guide (14) eggs with pliers (14c) for holding and transporting a weft thread end (27b) is provided, a fixedly connected to the guide and along the guideway of the shooter in a relative to the direction of movement of the shooter in front of the input section of the chain compartment (15) ^ j arranged distribution member (28), one of the member | C28) carried expanding wedge (29) for the tong jaws (I4d) devices carried by the distributor member (28) for clamping the weft thread end between the jaws (I4d) of the tongs (14c) when they are spread apart by the wedge (29), so that the weft yarn end (27b) is clamped between the jaws (14c), the shooter via the wedge addition, once moved, in addition to the distributor member scissor members (30) (28) located for cutting the ge of the Zan- _N captured and entrained bathing after this has emerged from the chain compartment I, a receiving organ | (31) for the end of the thread held by the pliers of the shooter, which take-up element is arranged along the path of the shooter in relation to the direction of movement of the shooter behind the exit section of the chain shed (15), an expanding wedge (31d) carried by the take-up element (31) for the forceps jaws and organs (31f) attached to the guide for holding the plague - 17 109852 / 0Λ26 of the thread end released by the spreading of the jaws, has " 2. Device according to claim 1, characterized in that the pliers of the protection by two elastic lamellae (Ud) formed vertically on the guessing (14) are attached and normally oriented along at least one in the direction of advance of the shooter Zone are in contact with each other. 3. A device according to claim 1 or 2, characterized marked ψ is characterized in that the elastic blades (Hd) a dung Munich W (He) for the expanding wedge, an insertion einrundung (Uh) and at least one groove (Hf) with parallel axis sur path of movement of the shuttle (U) have, wherein the Einrundung (Hh) and the groove (U) on the äusaeren part of the lamellae in the region is mutual be _r rührungszone lie, so that the weft thread (27b) can be positioned and inserted · 4 »Apparatus according to claim 1 or 2, characterized in that the distributor member consists of a blade-shaped Removing w wedge formed (29) in the longitudinal direction along \ the path of the contact zone of the jaws (Hd) wfthrend the forward movement of the shuttle (H) is arranged and the jaws by entering them, spreads apart. 5. Device according to one of spoke 1 to 3, thereby characterized in that the organs used for inserting the weft thread are made from a rod-shaped element (32) - 18 -109852 / CU25 stand, which is displaceable in the distributor member (28) and pushes the free end of the weft thread (27b) arriving from a crouch (27) into a hole (29h) provided in the blade wedge (29) and in the area of the web's contact zone Jaws (Hd) of the pliers (14c) of the shooter (14) lies, organs being provided which move the 8tangenf8rmige element (32) during the phase of insertion of the thread into the hole (29b) and the rod-shaped element (32) after this has been carried out Step and withdraw before the treasure arrives. % 6. The device according to claim 1 or 2, characterized in that the receiving member (31) consists of a blade-shaped wedge (31d) which is arranged in the longitudinal direction along the path of the contact zone of the jaws (I4d) of the pliers of the protection and this by being between pushes it in, spreads it apart, and consists of a receiving forceps, which is formed by two elastic jaws (31f), and also lies along the aforementioned path and in front of the wedge (31d), between which jaws (31?) the forceps (Uc ) of the shooter pushes in ^ and spreads them apart as they pass - 19 - 109852/0425 Read more