DE1801043A1 - Guide element for the weft insertion element of a loom - Google Patents

Description

T. 340

Gebrliäer Sulzer Aktiengesellschaft, Wintsrthur (Schveiz)

Guide element for the weft insertion member a loom

The invention relates to a guide element for the weft thread import organ of a weaving machine, which element has a foot used for fastening and two on it attached, 'the application body essentially encompassing, contains beak parts having free ends.

In a previous guide element, the cross section is of the foot as well as the connection between the foot and the beaks forming parts relatively large and essentially nin.mt in the direction of the free ends of the Sihnabelteile out continuously cder gradually, the beak parts and foot are in a direction perpendicular to the direction of passage of the entry £ orgar.s (in the following if a shooter is assumed, for example) standing plane is particularly rigid. This can cause vibrations of the passing through Protection and due to a slight change in direction of the protection occurring during the entry force components at right angles to the gunner's trajectory by the leadership team or not only limited to ge no inside.

The invention is based on the problem of a particular to create improved guide element in this regard. The invention consists in that at least one of the cutting

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the . ,

share unJ / or / foot einö i: a comparison to the cross-section of the oiler with your inlet organ in contact with corking. Parts substantially smaller cross-section v / _s ourists section has a noticeable suspension of the respective beak part or the ganzön guide element permits substantially in the direction of a plane perpendicular to the flow direction of the entry organ level.

Vibrations of the protection as well as other transverse to the direction of passage Occurring, momentary force components are then from one or both beak parts of the guide element or taken up by the entire guide element. The entirety of all guide elements that the leadership {z.3. Schiitzenführung) form for the entry organ »thus a damped, resilient and vibrating sariae guideway for the entry organ.

The entry organ is therefore indungsgeisässen at aera Guide element slowed down during the weft insertion so maintains its speed. There is also wear and tear reduced on the guide element as well as on the entry organ itself. ' This eliminates the need for frequent replacement of the five-ring elements and of the entry organ as well as metallic abrasion avoided, the with previous designs in the fabric or * the weft and warp threads penetrate venrsg.

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Tests have shown up that the beneficial effect in terms of geriüSer ^ n metallic abrasion particularly in the processing of synthetic yarns affects "The attrition of existing guides and entry organs has often led there to _a that due to the incorporation of the abraded metal dust into the warp and Weft threads, the finished fabric has shadows or other mischievous spots. This is particularly noticeable with synthetic fabrics because the metal dust is mainly deposited there on the surface of the threads or the fabric and cannot, as with fabrics made of natural threads, penetrate between the fibers of the threads and thus into the less visible depth of the fabric.

Due to the resilient effect of the guide element according to of the invention also need the leadership for the Elements forming the entry organ are no longer so precisely adjusted to be like before.

Further features emerge from the following description of execution activities in connection with the drawing and the demands.

Fig. 1 is a cross section through a rapier shuttle loom with the trained according to the invention Guide elements, in a schematic representation,

Fig. 2 shows a number of guide elements in a view and in a larger cash register,

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Fig. 3 illustrates a guide element according to

1 and 2 in side view, FIGS. 4 to 6 show modified exemplary embodiments.

The loom has a frame that consists of two cheeks 21 and longitudinal members 22,23. The warp threads 25 are unwound from a warp beam 24 stored in the machine frame and guided via a tensioning beam 26 and a warp thread monitor device 27 to a shed 29. This is formed by shafts 31, which are from a drive device 32, e.g. an eccentric machine, are set in motion.

On a drawer 34, which is driven by a drawer shaft 41, sits a reed (leaf) 33 and in front of it a rifle guide, which consists of a larger number of guide teeth and is designated as a whole as 35. By means of them, a gripper shooter 49 (FIGS. 3 to 6) is shot into the compartment 29 when the shooter guide 35 is moved into the compartment as indicated by arrow 28. The shop shaft 41 is driven by a loom main shaft 40. The finished fabric 19 reaches a tree 39 via rollers 37, 38.

In FIG. 2 , a number of protective guide teeth 42 can be seen which are fastened to the drawer 34 by means of clamp-like holders 44 and screws 45.

Each guide tooth 42 contains a foot 46 (FIG. 3) _e which continues upward in two beak parts 47, 48. These grip around the gripper shuttle 49 while it inserts the weft thread and the guide teeth 42 run through.

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The lower beak part 4 7 has the one with the shooter surface 51 coming into contact in part 13 has a relatively large cross-section approximately of the amount A. At the dash-dotted line marked interface 52 in part 11, it has the much smaller cross-section approximately of the amount B. Correspondingly the upper beak part 48 has on the surfaces 55,56 coming into contact with the shooter in the areas 14,15 relatively large cross-sections approximately of the amount G or C and at the dot-dashed point 54 in part 12 the essential smaller cross-section about the amount D. The shooter is carried by the contact surfaces 51,55 in the parts 13,14, while it is merely guided or occasionally pushed off on the further contact surface 56 of the part 15.

Due to the small cross-sectional areas at 11, 12, the beak parts 47, 48 are able to oscillate or irregular movements of the shooter 49 according to arrows 71, 72 to yield a little (suspension) or to absorb the corresponding forces.

If the shooter 49 in FIG. 3 tends to rotate clockwise (to tilt), for example, it will a force component E is exerted on the contact surface 55. The component E causes a clockwise torque of the beak part 48 at interface 54. As a result the free end 61 of the upper beak part is pivoted slightly upwards according to the arrow. The between the free ends 61, 64 existing opening 63 of the guide tooth is thus enlarged.

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In the embodiment according to FIG. 4, which largely corresponds to that according to FIG. 3, the rear section 65 of the upper beak part 48 runs essentially from the top left to the bottom right. As a result, the interface 54 is moved relatively far to the right, so that when the gate 49 is pivoted in the clockwise direction, the force component E runs to the left of the interface at 54. When the guard is tilted in the manner described, the end 61 of the beak part 48 is therefore moved somewhat downwards according to arrow 66. There is thus a counterclockwise torque at the interface 54, which endeavors to further close _{the opening 63 between the ends 6I 9 64 »}

In the design according to Fig. 3, your shooter will be in variants clockwise a bigger game between the Beak parts 47,48 granted, in Fig. 4, however, the game is reduced. In Fig. 3, therefore, the abrasion becomes particularly des Schnabelteiis 48 reduced, in Fig. 4, however, the shooter is immediately moved back to his previous position. Both can offer advantages.

In the embodiment of FIG. 5 also contains the upper section of the foot 46 of the guide element 42b adjacent to the beak parts 47, 48 at the interface 68 shows a cross section F which is significantly smaller than the cross sections A, G, C in the parts 13,14,15. This is another spring option for the entire guide tooth 42b in the case of vibrations, tilting or other transverse to

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Direction of flight of the shooter 49 given forces.

In the embodiment according to FIG. 6, the cross-section at the interfaces 52 ', 54' is made significantly smaller than the cross-sections A, G, and C _{1 in} that a cutout 68 is provided from the solid. At the interface 52 * the cross-section consists of the partial cross-sections H and J, at the interface 54 it consists of the partial cross-sections K and L.

The reduction in cross-section in sections 11, 12 »16 each relates to a reduction in the direction parallel to the plane of the drawing in FIGS. 3 to 6. The Guide teeth in all for the invention into consideration Sections of the same thickness, as can be seen from FIG. 2.

Instead of the part 12, for example in the embodiment according to FIG. 3, a part 12 'with a reduced cross-section D ¹ according to the variant shown in dashed lines can be provided. The suspension effect in the sense of the invention can always be achieved if a section with a significantly smaller cross section compared to the section coming into contact with the shooter is provided somewhere in the area between the contact section and the foot 46.

All embodiments fall within the scope of the invention in those by cross-section reduction in the above-described This is achieved in the sense that the beak parts have a noticeable spring effect under the part of the entry organ

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have exerted powers.

Such guide elements can also be used, for example, for weaving machines with looper needles as weft insertion organs and possibly also used for other types of loom.

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Claims (1)

T. 340 Claims 1. Guide element for the weft thread insertion element of a weaving machine, which element contains a foot used for fastening and two beak parts attached to it / the insertion element essentially encompassing the insertion element and having free ends, characterized in that at least one of the beaks (47,48) and / or the foot (46) has a section (B, D or F ″) which has a significantly smaller cross section (B, D or F ″) compared to the cross section (A, G, C) of the parts (13, 14, 15) coming into contact with the entry member (49) (11, 12 or 16), which allows a noticeable resilience of the relevant beak part (47, 48) or of the entire guide element (42b) essentially in the direction of a plane perpendicular to the direction of passage of the inlet member (49). 2. Guide element according to claim 1, characterized in that that the connection between the beak part (47, 48) and foot (46) forming part (11, 12) of at least one of the beak parts (47,48) has a much smaller cross-section (3, D) than the one adjoining it, in contact with the entry member (49) upcoming games (13,14,15). 3. Guide element according to claims 1 and 2, characterized in that the significantly smaller cross section (D) having part (12) eir.es the entry organ (49) from above 909845/0751 -ID-BAD ORIGINAL, ■ overlapping beak part (48) with respect to the entry organ (49) on this Echnabel part (48) during the Weft insertion exerted force component (E) is located in such a way that the force component (E) causes the guide element (42) at its free ends (61,64 head is opened (arrow 62). 4. Guide element according to claims 1 and 2, characterized in that the significantly smaller cross section (D) having part (12) of a beak part (48) which overlaps the entry element (49) from above with respect to the beak part (48) from the entry element (49) onto this beak part (48) during the weft insertion exerted force component (E) is located so that by the force component (E) the guide element (42a) its free ends is further closed (arrow 66). 5. Guide element according to one of the preceding claims, characterized in that a section (67) of the foot (46) adjacent to the beak parts (47, 48) has a compared to the cross section (A, G, C) of the with the entry member (49) parts (13.14, 15) which come into contact have a much smaller cross-section (F) part (16). 6. Guide element according to claim 1, characterized in that on at least one of the beak parts (47, 48) the part (11, 12) of significantly smaller cross-section (H ₅ J; K, L) through a cutout (68) from the solid is formed. 90.98 45/075 BATH ORIGINAL