JPS6221891B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides a weaving shaft concentrically surrounded by a thread lattice, an entrance edge of the weaving shaft constituting a weaving ring, and a weaving shaft that is curved in accordance with the radius of the circular woven fabric. The present invention relates to a circular woven fabric support device for a circular loom, which includes a support element that supports the circular woven fabric from the inside, holds the circular woven fabric so as to form an annular diameter, and is supported by a holder passing through a weaving shaft.

As a means for supporting circular woven fabric, arch-curved support plates have been known, and these support plates are spaced apart from each other along the inner surface of the circular woven fabric on the circumference of the circular woven fabric. , the circular woven fabric was supported in a radial plane by a holder fixed to a central conveyor. The size of the annular diameter supported by these support plates can be varied by moving the support plates inwardly and outwardly;
The curvature was far different from the curvature of the circular woven fabric, which bulged out in the circumferential direction. With support elements known up to now, high frictional forces occur, especially between the support element and the circular woven fabric, and the arcuate support plate does not support the circular woven fabric uniformly and, moreover, tends to contract beyond the support plate. There was a drawback in that an inappropriately high stress was generated at the edge portion of the inside support plate side of the circular woven fabric.

The object of the invention is therefore to achieve perfect support and good guidance of the fabric tube, such that only a small amount of friction occurs between the support and the fabric tube.

According to the invention, this object is achieved in a device of the aforementioned type by using as its supporting element a support ring with at least one arcuate axis and a rotatable cover. These support elements themselves are conventionally known as devices for measuring the diameter of the web of a blow-molded tubular film for supporting the expanded tubular film from the outside; As the face rolls over the inside of the circular loom, there is only a slight frictional force between the support ring and the circular loom, causing the fabric tube with a circular cross section to expand and move outward from the circular loom. The cloth tube can be guided into the tube.

A plurality of spaced apart support rings may be superimposed to guide and support the round woven fabric.
To change the radius of the support ring, the arcuate shafts are overlapped at their ends and removably attached to the fixture.

Further advantageous embodiments of the invention are described in more detail in the dependent claims.

One embodiment of the invention will be described in detail below with reference to the drawings.

In the circular loom shown in FIG.
passes through the thread guide port of the shed forming heald 2 and the rod 3 of the thread threading lattice 4, beyond the periphery of the weaving ring 5,
It passes through to the weaving shaft which is the starting end when the cloth tube 6 is recovered by a device not shown.

The cloth tube 6 to be collected through the weaving ring 5 is
Support ring 7 located inside this cloth tube 6
is supported as mentioned above. In the illustrated embodiment, two support rings are provided.

As shown in FIG. 2, the elastic ring 7 that supports the cloth tube 6 from the inside is made of a wire 8 that is once split and then held in a holder 9 with both ends thereof staggered on two planes. It is composed of For this purpose, the holder 9 is provided with two overlapping passages, and both ends of the wire 8 are inserted through these passages and fixed by the end plate 10 so as not to come out. On the opposite side of the holder 9 from the end plate, a compression spring 11 is mounted on a wire (only one is shown in the figure). These springs 1 are supported on one side by a holder 9 and on the other side by a roller 12 that wraps around the wire. Since the roller 12 is thus positioned in close contact with the tube 13 that envelops the wire ring 7, it can provide efficient support and can be expanded and contracted. As can be understood from Figure 5,
The rollers 12 may be positioned apart from each other and bound together by a tube 13 stretched over the rollers. For clarity, only one end of the wire is shown in FIG.

The wire ring 8 can also be divided into two parts, as shown in FIG. In the figure, only the two approach end attachment structures are shown on the holder 14. However, the attachment of the other two closely opposing ends is similar. In this case, the holder 14 is provided with two overlapping holes equally spaced from the central axis of the fabric tube 6. One ends of the two curved shafts 15 and 16 are fixed in this hole. The lugs 17, 18 provided on these curved axes 15, 16 are
At the end farthest from the center, it is welded to a ring 19, 20 (see FIG. 4) surrounding the bending shaft 8. By virtue of their elasticity, the springs 20, 21 press the individual rollers 23, which are juxtaposed to the wire so as to wrap around the wire, against the fabric tube that supports it from the inside.
Even if the diameters of the tubes are significantly different, the rollers 2 at both ends of the split wire 8
3' Both ends of the wire are overlapped to prevent a gap from forming between them. This overlapping state is not clearly illustrated in FIG.

[Brief explanation of the drawing]

FIG. 1 is a cutaway perspective view of a circular loom. Second
The figure is a perspective view of a fabric tube support ring with one cut. FIG. 3 is a perspective view of a fabric tube support ring with two cuts. FIGS. 4-5 are cutaway perspective views of another embodiment of the rotatable cover of the support ring. 4... Threading grid, 5... Weaving ring, 7... Support ring, 8... Curved shaft, 13... Tube, 23... Roller, 9, 14... Holder, 12... Roller.

Claims (1)

[Claims] 1. A weaving shaft that is concentrically surrounded by a thread lattice and has an inlet edge of the weaving shaft that is composed of a weaving ring, and a weaving shaft that is curved in accordance with the radius of the circular woven fabric and supports the circular woven fabric from the inside. , a support element supporting the circular woven fabric in a circular manner and supported by a holder passing through the weaving shaft, the support element consisting of a support ring having at least one circularly curved shaft, the support ring The circular loom is equipped with a rotatable cover, and both ends of the circular curved shaft are slidably inserted into a holder so that the diameter can be changed, and are fixed in the holder in such a manner that they overlap each other. Circular woven fabric support device.