Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Patent
1985-06-03
1987-04-14
Jaudon, Henry S.
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
D03D 4727
Patent
active
046570535
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a needle strip needle ribbon weaving machine in accordance with the preamble of claim 1.
Needle strip weaving machines of the aforementioned type are known, for example, from CH-PS No. 633 331. The weft needle drive as well as the weaving blade drive are driven by a common main drive shaft in this known needle strip weaving machine. A disc with a crankshaft is provided on the main drive shaft having diametrally opposed disposed crankshaft pins, whereby the one crankshaft pin is connected with the weft needle drive by means of a connecting rod and the other crankshaft pin is connected with the weaving blade drive also by means of a connecting rod. Thus, the weaving blade drive and the weft needle drive are subjected to an opposite directed movement. Good results are obtained with such a needle strip weaving machine. However, much is still to be desired with respect to the noise development as well as with respect to the drive output.
It is therefore an object of the invention to improve a needle strip weaving machine of the aforementioned type wherein the noise development is reduced and the output can be increased.
This object is surprisingly solved by the characterizing features of claim 1. In view of the fact that the weft needle drive is no longer connected by itself on the main drive shaft by means of a crankshaft pin, but is connected with a rocker arm of the weaving blade drive by means of a coupling rod results in the advantage that a substantial increase of the output of the needle strip weaving machine is made possible in a surprising manner, while at the same time a reduction in the noise development is achieved.
Advantageous embodiments of the needle strip weaving machine are described in claims 2 to 7.
Particularly favorable conditions with respect to an increase in output and reduction in noise may be obtained with the embodiment in accordance with claim 2. The rocker arms, which are connected by the coupling rod and which connects the weaving blade drive with the weft needle drive, may have different lengths. However, a design in accordance with claim 3 is still more advantageous. A further improvement with respect to the increase in the output and the reduction in noise is made possible by a further embodiment in accordance with claim 4. Although, the rocker arms, which are connected to the coupling rod, are disposed in one direction in accordance with claim 6, may also be disposed in opposite directions in accordance with claim 5 which provides particularly advantageous conditions. This favors the mass balance of the drives.
Claim 7 shows a very simple solution of the needle strip weaving machine, since an additional rocker arm on the weaving blade drive is not required.
Exemplified embodiments of the inventive needle strip weaving machine are described in more detail in conjunction with schematic drawings which show:
FIG. 1 a first needle strip weaving machine, whereby the coupling rod which connects the weaving blade drive with the weft needle drive is mounted on oppositely directed rocker arms, shown in a side view;
FIG. 2 the needle strip weaving machine of FIG. 1 in a plan view;
FIG. 3 a second needle strip weaving machine, whereby the coupling rod which connects the weaving blade drive with the weft needle drive is mounted on rocker arms disposed in the same direction, in a side view; and
FIG. 4 the needle strip weaving machine of FIG. 3 in a plan view.
The weaving machine illustrated schematically in FIGS. 1 and 2 contains a main drive shaft 2 on which a weft needle drive 4, a weaving blade drive 6, a knitting needle drive 8 and a yarn forming drive 10 are connected. Furthermore, warp threads 12, the warp compartment 14 and a woven strip 16 are indicated.
A disc 18 is mounted on main drive shaft 2 which contains a radially adjustably guided crankshaft pin 22 in a dovetail like groove 20, so that the excentricity of the crankshaft pin is adjustable. A connecting rod 24 is connected to the crankshaft pin 22 which is mounted on a rocking lever 28 by means of a j
REFERENCES:
patent: 3901285 (1975-08-01), Griffith
patent: 4243076 (1981-01-01), Mallard
Jaudon Henry S.
Striker Michael J.
Textilma A G
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