JPH0639736B2 - Weft storage device for loom - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention has a winding body for winding a weft yarn, the winding body being arranged eccentrically with respect to the longitudinal axis of the reservoir. And a bracket forming a number of radially movable winding bodies, each of which has a drum-shaped arm extending radially relative to the winding body. For the loom, the other arm being held in the part, while the other arm extending essentially axially parallel to the longitudinal axis of the reservoir extends towards the base disc of the winding body. The present invention relates to a weft storage device.

Known devices of this type (Swiss patent 639,711)
In, the radial arm of the bracket is held in the hole in the drum by a tightening screw. This axial arm extends to the immediate vicinity of the base disc. The arm may possibly contact the disc without being secured therein.

If the winding diameter of the winding body and thus the length of the storage winding corresponding to the weaving width of the loom to which it is to be attached should be changed, loosen the tightening screws on each radial arm and loosen the bracket. It must be inserted more or less by hand and refastened with screws in the new position. This adjustment of the bracket requires a relatively great skill of the loom operator. As a rule, the new position of the bracket corresponding to the desired weaving width must be found by testing.

The problem to be solved by the invention The present invention is based on the problem of taking this into account and obtaining an improved weft yarn storage device.

SUMMARY OF THE INVENTION In order to achieve this object, the invention is based on the fact that the base disc is rotatably formed and at least one spiral groove is provided in the groove. The solution is to make the axial arm of the bracket project.

This allows all brackets to have a common radial direction,
By rotating the base disc, it is achieved that essentially the same amount is adjusted. In this case, the axial arm of the bracket is simultaneously moved radially further inward or outward, depending on how the helical groove extends. At the same time, the radial arm of the bracket is moved further inward or outward into the associated hole of the winding drum. Then, in principle, the radial arm of the bracket is retightened. This allows the new storage length of the weft thread to be easily adjusted.

In particular, the adjustment of the bracket can be used as a precise adjustment for the weft insertion length. Corresponding to this fine adjustment, there is coarse adjustment. The rough adjustment is achieved, for example, by selecting an appropriate number of turns on the winding body that belong to exactly the same weft insertion length. The precise adjustments that are coordinated are
This is accomplished by the above precise adjustment of the position of the bracket.

Embodiment As shown in the drawing, a drive shaft 2 of a reservoir 3 is arranged in a cylindrical housing 1, which is shown in a schematic view, which drive shaft 2 is provided with a toothed belt drive device 4. Are driven corresponding to arrow 5. Above the shaft 2, the yarn supply pipe 6
Is attached, and the supply pipe 6 is driven corresponding to the arrow 7. In this case, the weft thread indicated by 8 is supplied as indicated by arrow 9 and is wound in the form of a coil 11 on the winding body indicated by 12 as a whole. A bar 51 is provided for balancing the weight on the tube 6.

During the operation of the loom, the disk 13 rotates as shown by the arrow 14, and a certain number of coils are passed rightward in each tooth groove 15. On the front side 16 the weft yarns are pulled up and assigned during the weaving, as indicated by the arrow 17. It is inserted into the trail of the loom (not shown).

The winding body 12 has a drum-shaped winding member 19, and the winding portion 19 is arranged such that its shaft 18 is eccentric with respect to the shaft 2 of the reservoir 3. Winding body 12
Also has, for example, six brackets 21 mounted in the lower region of the drum member 19. Each bracket 21 comprises an arm 22 oriented essentially radially with respect to the drum member 19 and an axial arm 23 extending essentially parallel to the axes 18,2. Each arm 22 projects into a recess 24 in the winding member 19 and each arm 23 extends to a base disc 26. The disc 26 is rotatably supported on the winding member 19 under the ball bearing 60. The disk 26 has an arc-shaped slit 62, and the tightening screw 61 is screwed into the winding member 19 by the slit 62. By loosening the screw 61 (FIG. 5), the disc 62 can be rotated, for example by hand, and then retightened by the screw 61 to a new position. A radial groove 27 is cut into at least a portion of the winding member 19 extending parallel to the disk 26. The groove 27 is formed at the end of the arm 23 in the axial direction. It is useful for guiding to the side of 29.

The disc 26 includes a continuously extending spiral groove 28. The end 29 of each axial arm 23 projects into a helical groove 28. Radial end 31 of arm 22
Is clamped under the use of tension screws 34 by means of a disc 33 on the front side underneath the rubber ring 32.

A prismatic guide member 41 is fixed to the housing 1. The guide member 41 has a slit 42, and the separation disk 13 projects into the slit 42.
Therefore, the winding body 3 rotatably mounted on the shaft 2 formed of the cylindrical winding member 19 and the bracket 23 is not rotatable.

During operation of the weaving machine, this arrangement is provided, for example, in that each of the five coils 11a is journaled in the same tooth space 15a of the separating disc 13 and in FIG. The five coils 11a, which are adapted to be pulled to the right when they come out of the part 9 of
It contains a length equal to the desired weave width, for example 1.40 m.

For example, if a weave width of 2 m is to be stored on the winding body 3, the screw 34 is loosened, which allows the bracket 21 to be loosened in the slit 24. After that, the screw 61 is loosened and the disc 26 is
By hand, the bracket 21 is pivoted on the spiral groove 28 so as to be moved further outward in FIG. Each end 29 is moved outward into the associated radial groove 27 by a corresponding value that can be read at the markings on the leg 22. As an adjustment aid,
Marking circle 45 on the edge of the winding member 19 of the bracket 21
Can also be used, where the position of the end of the bracket 21 is read. At the new position corresponding to the weave width W = 2 m, the screws 61, 34 are retightened, so that the screw 26 and the bracket 21 are firmly set again. Weaving can now be continued with a new weave width.

In an alternative embodiment, instead of only one continuous spiral groove 28, a number of partial spiral grooves 28a, b each extending only over a portion of the periphery are provided. ，
c can also be provided as shown in FIG. 6, in which, for example, two brackets 21 each can be guided by their ends. Other part spiral groove 2
8d, e are mounted in the disc 26a as blind grooves so that the disc 26a can be easily utilized in each rotational position. In the case of this embodiment, no end portion 29 of the bracket 21 is guided into the grooves 28d and e.

In FIG. 2, the partial grooves 28d and 28c are partially visible inside the radial groove 27.

EFFECTS OF THE INVENTION The present invention provides a weft yarn storage device for a loom in which the drawbacks of the conventionally known ones are eliminated.

[Brief description of drawings]

FIG. 1 is a partially cut side view taken along line I-I of FIG.
2 is a front view seen in the direction of arrow II in FIG. 1, FIG. 3 is a partial cross-sectional view corresponding to FIG. 1, and FIG. 4 is an enlarged detail of a circle IV in FIG. FIG. 5 and FIG. 5 are enlarged detailed views of FIG. 1, and FIG. 6 is a schematic view showing a modified embodiment of the present invention. 2 ... Longitudinal axis; 3 ... Reservoir; 8 ... Weft; 12 ...
Winding body; 19 ... Drum-shaped part; 21 ... Bracket; 22,23 ... Arm; 24 ... Dimple; 26 ... Base disk; 28 ... Helical groove; 32 ... Pressing ring; 33 ... …
Clamp disc; 44 ... Mark.

Claims (4)

[Claims] 1. A winding body (12) for winding a weft (8)
The winding body (12) has a longitudinal axis (2) of the reservoir (3).
Eccentrically arranged with respect to the drum-shaped part (19)
And a bracket (21) forming a radially adjustable winding portion, each of the brackets (21) having arms extending radially with respect to the winding body (12). Another arm (23) holding (22) in the drum-like part (19), while extending essentially axially parallel to the longitudinal axis (2) of the reservoir, is In a weft yarn storage device for a loom extending towards a base disc (26) of a take-up body (12), the base disc (26) being rotatably formed and at least one spiral. -Shaped grooves (28, 28a-c) are provided in which the axial arms of the bracket (21) are located.
A weft yarn storage device characterized in that (23) is projected. 2. The radial arm (22) has a drum-shaped portion (1).
It is held in the recess (24) of 9) and is also wound.
The weft yarn storage device according to claim 1, wherein the weft yarn storage device is held by a disc (33) which can be clamped in the direction of the longitudinal axis (2) of the (12). 3. A clampable disc (33) is provided with a pressure ring (32) made of an elastic material, for example rubber, which pressure ring (32) in the clamped position (21). (3) The weft yarn storage device according to claim 2, wherein the radial arm (22) is pressed. 4. The weft yarn storage device according to claim 1, wherein each radial arm (22) has a number of markings (44) for reading the radial position.