Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Reexamination Certificate
2000-03-15
2001-05-01
Falik, Andy (Department: 3741)
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
C028S271000
Reexamination Certificate
active
06223783
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an insertion system for a weaving machine comprising at least two nozzles mounted on a common holder and each having one intake for a filling yarn and each associated with a feed connection for a pressurized-medium.
2. Description of the Related Art
As regard to the insertion systems of the above kind, the pressurized-medium feed connections are always mounted in the vicinity of an injector segment on different sides of the holder. Depending on the number of nozzles, the feed connections are located at the top side, the bottom side, or also laterally, on the holder. Consequently feed lines connected to the connections must cross each other. The nozzle-configured insertion system, being mounted on the batten and moving together with it, causes the feed lines connecting the feed connections to stationary sources to rest and rub against each other. This rubbing may damage the feed lines and cause leaks.
SUMMARY OF THE INVENTION
The objective of the invention is to design an insertion system of the above kind wherein the feed lines can be arranged whereby the feed lines are least likely to touch and rub against each other.
This problem is solved by mounting the feed connections for the pressurized fluid in a spaced apart relationship along the longitudinal direction of the nozzles on the same side of the holder and by providing channels in the holder so that a channel extends from each feed connection to each nozzle.
The invention has the advantage that the pressurized-medium feed lines leading to the feed connections can be arranged as a system while substantially reducing the danger of the feed lines touching and rubbing against each other. Furthermore the insertion system as a whole is made compact. The invention is most advantageous when used with several nozzles.
Preferably, the feed connections are located in a plane containing the longitudinal axes of the associated nozzles. Because of this arrangement, the holder may preferably be made relatively narrow, and as a result several nozzles can be compactly mounted in one holder or several holders may be closely mounted next to one another on the batten of a weaving machine.
In the design of the invention, the holder is provided with clearances extending in the direction of the filling threads and receives the nozzles, and comprise a segment containing an injector, the segment being positioned between a filling insertion-element and a guide tube, the segment being sealed from the insertion element and the guide tube, or from a subsequent guide element, along the longitudinal direction of the clearance and being connected by a channel to a feed connection. Preferably, the channel leading from a feed connection to a nozzle positioned farther away will enclose the nozzles positioned more closely within one segment sealed in the longitudinal nozzle direction. In this manner the channels do not require undue space in a direction transverse to the plane of the nozzles' longitudinal axes.
In a first embodiment of the invention, a holder is provided with sets of nozzles superposed or adjacent to each other in substantially parallel planes. In this manner a very compact insertion system can be created, wherein the feed connections for all the nozzles are systematically mounted on the same side.
In another embodiment, a holder is provided with two or more superposed nozzles positioned in a substantially vertical plane. Such a holder is substantially narrow. Therefore, in another advantageous embodiment, several holders each having at least two nozzles are mounted adjacent to each other and the feed connections are mounted at the top sides of the holders. As a result a very compact insertion system is made possible, which may be configured in a modular manner with several holders and a corresponding plurality of nozzles. Additionally and advantageously, the holders when seen from above will taper in the direction of the filling threads and abut each other on their lateral surfaces. As a result, a plurality of nozzles can be aligned relatively accurately with a guide channel, in particular, an air guiding channel in the reed.
REFERENCES:
patent: 3519030 (1970-07-01), Vermeulen
patent: 4957144 (1990-09-01), Watanabe et al.
patent: 5111852 (1992-05-01), Verhulst
Peeters Jozef
Verhulst Joseph
Bacon & Thomas PLLC
Falik Andy
Picanol N.V.
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