WO2000079035A1

WO2000079035A1 - Temple

Info

Publication number: WO2000079035A1
Application number: PCT/EP1999/008905
Authority: WO
Inventors: Jack G. Altmann
Original assignee: G. Hunziker Ag
Priority date: 1999-06-17
Filing date: 1999-11-19
Publication date: 2000-12-28
Also published as: DE29910506U1

Abstract

The invention relates to a temple, in particular, for a weaving machine, comprising small rotating temple wheels (2), located on elliptical discs (1, 1', 1''). The respective outer periphery of the small wheels consists of an elastic ring (3) which is mounted in a groove (4) of said wheel (2). The ring (3) covers both exterior shoulders (5, 6) of the small wheel (2) which lie adjacent to the groove (4).

Description

Spreader

The invention relates to a spreader, in particular for a weaving machine, with circumferential spreader wheels arranged on elliptical discs, the outer circumference of which consists in each case of an elastic ring which is mounted in a groove of the wheel.

Spreader bars are used in the field of textile machines, in particular in weaving machines or also in fabric inspection machines. These spreader cylinders have the task of weaving the fabric, e.g. B. on the loom, always run in the same width. For this purpose, the inclined spreader wheel can have needles on the outer circumference, which engage in the tissue, constantly push it outwards when the wheel is turned, and then detach from the tissue again. The spreader bars are accordingly arranged on both sides of the weaving machine.

In addition to equipping the spreader with needles, it is also known to use an elastic ring, for example a rubber ring, for example when processing sensitive material, eg. B. of silk. The known constructions of this type are such that when the warp threads are pulled through, these can disadvantageously jam between the spreader wheel and the rubber ring. This causes damage that affects the fabric and handling when changing the warp beam.

Accordingly, the present invention seeks to provide a spreader of the type mentioned, in which a possible Damage to the fabric, especially the warp threads, is avoided when pulling through.

This object is achieved according to the invention in that the elastic ring covers both outer shoulders of the wheel adjacent to the groove, so that the risk that the warp threads experience a nipping between the spreader wheel and the elastic ring is easily avoided.

The outer surface of the wheel can be designed to be tapered with one outer floor and two sloping side walls, to which the outer shoulders are connected on the outer circumference of the small wheel. Here, the ring cross-section can be adjusted to the outer cross-section with two parallel inner ring sections, which are delimited by two end faces of the elastic ring.

In a further embodiment of the invention, the inner ring sections can be cylindrical, with the possibility that these inner ring sections are offset in height from one another.

The end faces of the elastic ring are connected to one another by an outwardly curved end face. The elastic ring can be made of rubber or plastic.

In a further embodiment of the invention, the rings, which are made of rubber or plastic, can be color-coded. The Shore hardness of the rubber rings is different and is characterized by appropriate coloring, for example blue, green, red, transparent, etc. The invention is described below with reference to an embodiment shown in the drawing. The drawing shows:

Figure 1 is a side view of the spreader wheel in section.

Fig. 2 is a side view of the wheel built into a spreader according to Fig. 1, in section

3 shows a broken representation of a spreader in section, with elliptical discs, but before assembly with the spreader wheels.

2 and 3, a spreader, in particular for a weaving machine, which has a number of elliptical discs 1, 1 ', 1 "etc., revolve on soft spreader wheels 2.

Each of the spreader wheels has an elastic ring 3, which consists, for example, of plastic or rubber and is mounted in a groove 4 of the wheel 2.

1 and 2 in particular that the ring 3 overlaps both outer shoulders 5, 6 of the wheel 2 adjacent to the groove 4. This special design perfectly prevents the warp threads from jamming between the wheel 2 and the ring 3 when the warp threads are pulled through.

1, the groove 4 of the wheel 2 is tapered with a groove bottom 10 and two sloping side walls 11 and 12, to which the outer shoulders 5 and 6 connect on the outer circumference of the wheel 2. The cross section of the ring 3 is based on the cross section of the groove 4, two inner ring sections 20, 21 which are arranged parallel and at a distance from one another and which are delimited by two end faces 24 and 25. The inner ring portions 20 and 21 are cylindrical. Here, in particular according to FIG. 1, there is the possibility that the inner ring sections 20, 21 are offset in height by a certain amount h. Alternatively, these inner ring sections can also be conical.

1 and 2, the end faces 24 and 25 of the elastic ring 3 are connected to one another by an outwardly curved end face 30. The shape of the end surface 30 depends on the inclination of the elliptical discs 1, 1 ', 1 "and on the tissue to be produced.

In Fig. 2 it is shown how a spreader wheel 2, which with the elastic

Ring 3 is equipped, is rotatably arranged on a bearing surface 18 of the ellipse 1 '. This elliptical disc 1 has an eccentricity e with respect to the bearing surface 18, so that in the upper region the end surface 30 of the rubber ring 3 acts on the lower side of a fabric web 15, but in the lower region lies within the profile of the elliptical disc 1.

Fig. 3 shows a partially broken view of a spreader with a number of elliptical discs 1, 1 ', 1 ", which are mounted, for example, on a known clamping sleeve 27, which in turn can be attached to an axis after final assembly.

The spreader wheels 2 according to the invention are pushed onto the aforementioned elliptical discs, since each of the spreader wheels 2 according to FIG. 1 is one Has through opening 8, which is placed on the bearing surface 18 of the ellipse 1 or 1 'or 1 ".

According to the invention, there is the possibility of color coding the rings. Here, for example, the Shore hardness of the rubber rings is different and is characterized by coloring, for example soft approx. 65 ° Shore with blue color, medium approx. 80 ° Shore with green color and hard approx. 90 ° Shore with a transparent design Ring.

Due to the special design of the elastic ring 3, d. H. of the rubber ring, which covers the two outer shoulders 5 and 6 of the respective spreader wheel 2, a simple construction is created which perfectly avoids the undesirable effect of pinching warp threads between the spreader wheel and the ring.

Claims

claims

1. Spreader, especially for a weaving machine, with on elliptical discs

(1, 1 ', 1 "), circumferential spreader wheel (2), the outer circumference of which consists in each case of an elastic ring (3) which is mounted in a groove (4) of the wheel (2), characterized in that the ring (3) both the groove (4) adjacent outer shoulders (5, 6) of the

Wheel (2) covered.

2. Spreader according to claim 1, characterized in that the groove (4) of the wheel (2) is tapered, with a groove bottom (10) and two obliquely tapering side walls (11, 12) to which on

Connect the outer circumference of the wheel (2) to the outer shoulders (5, 6).

3. spreader according to one or more of the preceding claims, characterized in that the cross section of the ring (3) is adjusted to the cross section of the groove (4) and has two parallel spaced inner ring sections (20, 21), which by two End faces (24, 25) are limited.

4. spreader according to claim 3, characterized in that the inner ring portions (20, 21) are cylindrical or conical.

5. spreader according to claim 3 and 4, characterized in that the inner ring portions (20, 21) in height (h) are offset from one another.

6. spreader according to claim 3, characterized in that the end faces (24, 25) of the elastic ring (3) are interconnected by an outwardly curved end surface (30).

7. spreader according to one or more of the preceding claims, characterized in that the elastic ring (3) consists of rubber or plastic.

8. spreader according to one or more of the preceding claims, characterized by color coding of the rings (3).