JPS5834579B2 - Weft beating device of corrugated shedding loom - Google Patents

Description

[Detailed description of the invention] The present invention relates to a weft beating device for a corrugated shedding loom.

The present invention may be most advantageously used to make medium and high density fabrics using high count yarns.

The known weft beating device has a rotating shaft having a fixed reed for separating the warp threads and a plate for beating the weft threads towards the edge of the fabric, the warp threads extending between the plates provided on the rotating shaft. It is arranged like this.

The above-mentioned type of weft beating device has a fixed reed for separating the warp threads, and a rotating shaft having weft beating plates arranged in a row so that the warp threads pass through, and the plates are arranged along the rotating shaft. The comb is attached to the rotating shaft so as to form a spiral comb.

The comb serves to move the weft threads towards the edge of the fabric.

An area for receiving a mechanism for moving the shuttle within the opening is provided between the fixed reed and the beating plate.

The plates of one comb therefore form the same plane of rotation as the plates of the other comb, and for this reason it is not possible to return misaligned warp threads to the position defined by the reed.

An object of the present invention is to provide a weft beating device for a corrugated shedding loom, in which the weft beating plate is
are arranged in the comb to ensure that the misaligned warp threads are returned to the position defined by the reed, without the teeth of the reed being brought close to the rotating area of the plate; The equipment is not complicated and ultimately the quality of the fabric produced is improved.

The weft beating device according to the present invention has a reel for separating the warp threads, and
It has a rotating shaft, a plate is attached to the rotating shaft,
The plates form a comb extending helically along the axis of rotation, and the invention further provides that each plate of at least one comb has a rotation axis of rotation relative to the other plates of the other combs. During this, the plane of rotation of at least a portion of the plates of one comb is placed so as not to coincide with the plane of rotation of the plates of the other comb along the axis.

By arranging the plates in this manner in the comb, the number of rotating surfaces of the plates is increased (eg, doubled) without reducing the gap between the plates.

Increasing the number of rotating surfaces of the plate provided per unit length within the fabric improves the parallelism of the warp threads.
The increase in the number of planes of rotation of the plates allows the misaligned warp threads to be moved along the axis of the axis of rotation to the position between the plates defined by the reeds.

Another feature of the invention is that the plates of at least one comb are equally spaced apart opposite the teeth of the fixed reed.

Such a plate arrangement is preferred for making a fabric in which the warp thread arrangement between the plates is the same as the warp thread arrangement between the teeth of the fixed reed.

For combs with different planes of rotation of the plates, the distance from the rotation axis of the rotation axis to the imaginary line touching the plates of these combs from the rotation axis of the rotation axis is greater than the distance from the farthest shed from the rotation axis of the rotation axis. It is placed at a distance like a dog.

This comb arrangement allows one comb plate to
Only after the plates of the other combs have engaged with the warp threads are they allowed to leave the warp threads, so that parallelization of the warp threads takes place before the action of the next comb is exerted on the warp threads.

In one embodiment of the invention, the end of the plate furthest from the axis of rotation of the axis of rotation is not parallel to the plane of rotation of the plate, so that if the mounting of the plate on the axis of rotation is inaccurate, Even in this case, the object of the present invention can be achieved, and therefore, the assembly of the rotating shaft and the plate is simplified.

As another feature, the plates of each comb can be made in one piece with a common base, which simplifies assembly of the rotating shaft and plates and reduces manufacturing costs.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a weft beating device for a corrugated shedding loom. This weft beating device includes a fixed reed 1 having two rows of teeth 2 and two combs supporting two plays 4a and 4b. 5,
6, the two plates are arranged at a constant distance from the two adjacent plates and offset from each other, and the combs 5, 6 form a helical shape along the rotation axis 3. is forming.

The warp passes between the teeth 2 of the fixed reed 1, forming a shed 9 as shown in FIG. 2, and a shuttle 10 runs between the warp B and C forming the shed 9 for passing the weft. do.

The shuttle 10 and the device 12 for moving the shuttle 10 are conventional ones and are arranged between the fixed reed 1 and the rotating shaft 30.

Each play) 4a, 4b engages a weft thread 11, moves it from the area guided by the shuttle 10 in the direction of the edge 13 of the fabric, and beats it towards the edge 13 of the fabric.

The direction of rotation of the rotating shaft 30 is indicated by an arrow in each figure.

In the weft beating device of the present invention, at least one comb-forming plate moves each plate or at least a portion of all the plates relative to other comb-forming plates during 30 rotations of the rotating shaft. The rotational surface is placed in such a way that it is displaced along the axis of rotation 3 from and parallel to the rotational surface of the plate of the other comb.

That is, as shown in FIGS. 1, 2, and 4a, the play of the comb 6) 4b is the rotation axis 3,
The plates 4a and 4b of the combs 5 and 6 thus describe parallel planes of rotation and E, respectively, during 30 revolutions of the rotation axis.

The plates 4a and 4b are attached to the rotating shaft 3, for example, by the method shown in FIG.

In FIG. 4b, the base 1 of each comb 5-4a is shown.
The part 14 furthest from the plate 5 is offset relative to the base 15 of the play 4a and extends parallel to the base 15.

Also, the base 15 of play) 4a is the play of comb 6) 4b
(ie, on the same plane as the rotational plane E of the plate 4b).

Therefore, during each 30 rotations of the rotation axis, portion 1 of each play) 4a
40 The plane of revolution F is displaced along the axis of rotation from the plane of revolution E of play) 4b.

In FIG. 4c, the bases 15 and 16 of plates 4a and 4b of combs 5 and 6 are in the same plane, and the parts 17 and 18 of these plates furthest from the base are offset (bent in opposite directions). ) and assume the position shown in Figure 4C.

During the rotation of the rotation axis 30, the rotation surface M of the portion 170 of the plate 4a is moved along the rotation axis 3 from the rotation surface N of the portion 18 of the plate 4b to the plane on which the bases 15 and 16 of both plates lie.

In the device shown in FIG. 3, four combs 8 are formed by four plates 7 a t 7 b, 7 c, and 7 d provided on the rotating shaft 3, for example, as shown in FIG. 4 d. The play of one comb 8) 7b is the play of the remaining combs 8 placed in the same plane) 7a.

7c > 7d so that the plane of rotation O of each plate 7b plays along the axis of rotation) 7a.

7c, is moved from the rotation plane P of γd.

In the 1KAe diagram, the play of the comb) 7b.

7c, 7d are plays)? 7a of all the combs 8 during the rotation of the axis of rotation 3).

The rotation surfaces of 7b, 7c, and 7d are parallel to each other.

Furthermore, the plates 7a, 7b, 7c of the comb 8.

Each of 7d can be made as shown in 4b and 4c.

Regardless of the number of combs formed by the plates provided on the rotating shaft 3 (two in Figs. 1 and 2, four in Fig. 3), these The plates can all be made as shown in Figure 4f, in this form the axis 3
The end 19 of the plate farthest from the zero rotation axis is not parallel to the plane of rotation of the plate (.

Play) Combs 5 and 6 (Fig. 1) in which the rotation surfaces of 4a and 4b and E are parallel to each other, as shown in Fig. 2,
From shaft 30 rotation axis 01, play of combs 5 and 6) 4
The distance "l" to the imaginary line 11a-a" touching a and 4b
“1 is the distance to the warp B of the largest shed 9 furthest from the axis of rotation of the shaft 30”! It is placed at a distance so that it is larger than 111".

Similar conditions are met when the rotating shaft 3 has four combs.

In order to obtain good fabric quality, at least one comb play) 4a, 4c or plates 7a-7d is
As shown in figure a, the plates of the other combs are placed at equal intervals so as to face the teeth 2 of the fixed reed 1.
As shown in Figure 4f, the fixed reed is placed in the gap between both rows of teeth 2.

As shown in Figures 5a and 5b, the plates 4a and 4b of the different combs 5 and 6 can be made in a connected form to form a monolith with a base 20, the shape of the plates being a matter of design. be.

At the same time, the plane of rotation of the plate is as shown in Figures 4a-40.

The plates 7a to 7d of the comb 8 may also be made integrally (not shown) or in pairs with a common base as shown in FIG. As shown.

The action will be explained below.

The warp yarns B and C divided by the teeth 2 of the fixed reed 1 are guided to the plays F 4 a and 4 b of the rotating shaft 3.

Said warp threads B, C are divided into gaps between play) 4a, 4b according to the pattern defined by the teeth of the fixed reed 1.

The misaligned warp threads in position "l a bll" (FIG. 6) are engaged in play (4a) for 30 rotations of the rotating shaft.

(The plate that engages the warp threads in position ab is shown as 4a1).

During the rotation of the rotating shaft 3, the plate 4a, which moves in the direction of the edge 13 of the fabric within the rotating surface, engages the warp threads B, C and moves them from the position "l a bll to the position II aCI+" .

The position of (play) 4a1 is shown in dashed lines, as are the positions of all plates 4a near the edge 13 of the fabric.

) Next play) As soon as 4b approaches the height of the upper part of the shed, the warp threads B and C in the position ++ ac++ are in the plane of rotation E. It engages with a certain plate 4b1 and is moved to position IIad11.

At this time, the plate 4a1, which has already come close to the edge 13 of the fabric, separates from the warp, and the position 11ac' of the warp B, C
It does not prevent movement from 1 to II ad II.

Accordingly, the misaligned warp threads are moved in the axial direction of the rotating shaft to a position extending parallel to the rotating surface.

The movement of the warp yarns in the axial direction along the rotational axis by the action of play) 4a and 4b is such that the helical groove 21 between the combs 5 and 6 allows the yarns to move without strong deformation. This is made possible by having depth.

The weft threads 11 are beaten in a known manner.

The weft yarn guided into the groove 21 by the shuttle 8 engages the sides of the plates 4a and 4b and, due to the helical shape of the groove 21, is gradually moved by these plates towards the edge 13 of the fabric. You will be beaten to a pulp.

As mentioned above, the beating device of a corrugated shedding loom according to the present invention can improve the weaving operation, make it possible to reliably keep the warp pattern as defined by the reeds, and make it possible to keep the warp pattern as defined by the reeds, and to To make it possible to make cloth without defects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a weft beating device with two combs;
Fig. 2 is a view seen from arrow A in Fig. 1, Fig. 3 is a view showing the main parts of the weft beating device having four combs, and Figs. 4a to 4f are plates provided on the rotating shaft. Figures 5a and 5b are diagrams showing the arrangement, and Figures 5a and 5b are diagrams showing the plates of the comb made integrally. Figure 6 is a diagram showing the process by which the plates return the warp threads to the position determined by the reed. be. 1... Fixed reed, 2... Teeth, 3...
...Rotating shaft, 4a, 4b...Plate, 5,
6... Comb, 19... End of plate, 20... Base, E, F... Rotating surface of plate.

Claims (1)

[Scope of Claims] 1. A weft of a corrugated shedding loom having a fixed reed for separating warp threads, a rotating shaft, and a plurality of plates arranged in a row on the rotating shaft to form a spiral comb in the axial direction. In the striking device, each plate 4a forming at least one comb 5 is connected to another plate 4b forming another comb 6.
In contrast, during the rotation of the rotation axis 30, the rotation surface of at least a portion 14 of each play) 4a forming the comb 5 is separated along the axis from the rotation surface E of the play) 4b of the other comb 6. A weft beating device characterized in that it is arranged to be movable. 2. Weft beating device according to claim 1, characterized in that the at least one comb (5) 4a is placed opposite the teeth (2) of the fixed reed (1) at equal distances. 3 Play) The combs 5 and 6 with different rotational surfaces of 4a and 4b are
(play)) The distance I to the imaginary line a-a in contact with 4a and 4b is characterized by the fact that the distance I from the rotation axis 30 to the farthest aperture branch is 11. A weft beating device according to claim 2. 4 End of the plate farthest from the axis of rotation 30 axis of rotation 19
The weft beating device according to any one of claims 1 to 3, characterized in that the plate is not located parallel to the plane of rotation of the plate. 5. Play of different combs 5 and 6) - 4a and 4b are rigidly connected to each other to form an integral part with a common base 20. The weft beating device described in Crab.