EP0336409B2 - Air jet loom with expander table and expander rod - Google Patents

Description

The invention relates to an air weaving machine with the features the preamble of claim 1.

A similar air weaving machine is described in US-A-3,621,886. Here, too, a protrusion of the spreader table engages in the Weft insertion channel, but is not centered in this arranged. When the weft thread hits the fabric keeps it just a short distance from the top Limiting the weft insertion channel, so the danger there is that the tissue hits the boundary and thereby is damaged.

The invention is therefore based on the object Air weaving machine with reed and spreader table like this to train that regardless of the type of fabric the The binding point is always relatively in the middle of the weft insertion channel is formed.

This problem is solved with an air-jet weaving machine with the features of the preamble of claim 1 its characteristics.

The binding point of the fabric in the weft insertion channel is thus centered and there is no longer any risk that the For example, tie point forward or down in the Weft insertion channel device.

According to the invention, when the weft thread is struck the fabric support surface of the spreader table and the center of the weft insertion channel in one plane, which is the ideal case for Location of the binding point is created.

Furthermore, the fabric lies outside of the relay nozzles and can be easily over the protrusion of the spreader table subtracted from.

The lead therefore allows the setting of a special one Fold geometry. The upper and lower compartments can go deeper be adjusted (weave in the sack); this has the advantage that the relay nozzles are not on Draw off tissue and that the tissue is not at the bottom Nose of the reed leaks. With that Tissue damage, particularly due to warp thread breaks are avoided.

In the following the invention is based on only one Execution path illustrating drawing explained in more detail. Here go from the drawing and from their description further features and advantages essential to the invention.

The figure shows a rod spreader according to the invention.

A reed, not shown, consists of parallel, a mutual distance from each other having reed teeth, of which a reed tooth in the Figure is shown in a side view. The reed tooth 1 forms a weft insertion channel 2 with a center, in that in a manner not shown in the vertical direction the weft thread is entered at the drawing level and where the chain is pulled in the direction of arrow 13.

The ideal case for forming a binding point 3 is achieved when warp threads 5 'and 6' in relative to the base of the Weft insertion channel 2 centered binding point 3 in the middle converge.

According to the invention, the rod spreader 15 is now provided with a Provided projection 8, the projection 8 in the Weft insertion channel 2 engages and the front edge of the Projection 8 lies approximately in the center of the weft insertion channel 2, i.e. the center is here by the vertical line 11 and given by the contact surface of the projection 8.

It can be seen that by laying the fabric 9 on the Projection 8 of the rod spreader 15 the binding point 3 of the Fabric 9 relative to the base of the weft insertion channel 2 is centered.

The rod spreader 15 with the projection 8 thus ensures that the binding point 4 at the bottom of the weft insertion channel 2 (rear) remains and there is therefore no danger that the tissue with the edge of the reed tooth or the Relay nozzles collide.

The rod spreader 15 consists in a manner known per se a lid 16 and a lower part 17, both parts are held together by a fastening 18.

The tissue 9 forming at the binding point 3 is in the Fabric pass 19 drawn in, the rod 14 the The tissue 9 is clamped after each stop. This embodiment of the rod spreader with the projection 8 according to the invention, in the weft insertion channel 2 protrudes, especially for dense and fine fabrics suitable, especially for drains, percal and sailcloth and the like

drawing Legend

1

reed tooth

2

Weft insertion channel

3

binding point

4

binding point

5

Warp thread 5 '

6

Warp thread 6 '

7

Expander table

8th

head Start

9

tissue

10

edge

11

line

13

arrow

14

Rod

15

Bar type temple

16

cover

17

lower part

18

attachment

19

Web pass

Claims (3)

1. Air jet loom having a weaving reed and having a weft insertion channel (2) constructed in the weaving reed, onto which channel (2) a one-piece projection (8) of an expander table (8) of a rod expander (15) is directed on beating up the weft thread to the binding point of the fabric (9), the projection (8) forming an extension of the upper flat bearing surface of the expander table for the fabric (9) and the free end of the projection (8) being limited by a closure which passes over from an upper flat bearing surface for the fabric (9) into a lower contour of the expander table, which contour extends to the upper bearing surface, characterised in that, on beating up the weft thread to the fabric (9), the bearing surface and the centre of the weft insertion channel (2) lie in one plane so that the binding point of the fabric (9) is centred relative to the base surface of the weft insertion channel (2).
2. Air jet loom according to claim 1, characterised in that a substantially pear-shaped fabric passage (19) for receiving an expander rod (14) adjoins the projection (8) of the rod expander (15) in the fabric removal direction (13).
3. Air jet loom according to claim 1 and 2, characterised in that the rod expander (15) comprises a lower part (17) having the projection, and a cover (16) having a flat fabric bearing surface.

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