Textiles: manufacturing – Warp preparing or handling – Machine replenishing
Patent
1992-07-28
1995-01-17
Crowder, Clifford D.
Textiles: manufacturing
Warp preparing or handling
Machine replenishing
28201, B65H 100
Patent
active
053815947
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a machine for the automatic drawing-in of warp threads from a warp beam into the harness of a weaving machine, having a warp-beam truck for accommodating the warp beam, and a mechanism, designated below as lifting device, for accommodating a drawing-in frame provided for clamping a warp-thread layer, the threading-up of which drawing-in frame takes place separately from the drawing-in machine and which, after the covering, can be transported together with the lifting device and the warp-beam truck to the drawing-in machine and is arranged so as to be displaceable along the latter.
In the drawing-in machine USTER DELTA (USTER-registered trademark of Zellweger Uster AG) described in U.K. Pat. No. 1,290,385, the lifting device is formed by a so-called drawing-in truck. The drawing-in frame is firmly mounted on the drawing-in truck and forms with the latter a constructional unit. Apart from the fact that this unit is relatively bulky and heavy and is thus also expensive, a special guide, let into the floor, for the drawing-in truck plus the warp-beam truck must be provided along the drawing-in machine in order to ensure the requisite exact guidance of the warp-thread layer relative to the drawing-in machine.
This guide also represents a cost factor and of course has an inhibiting effect on every change of position of a drawing-in machine once it has been set up, which represents an impairment of its ease of operation.
The invention, then, is intended to make the warp-beam truck having the lifting device and the drawing-in frame substantially simpler and less expensive while also doing away with the need for a special guide in the floor.
This object is achieved according to the invention in that the drawing-in frame is detachably mounted on the lifting device, in that, before the drawing-in, the drawing-in frame is transferred from the lifting device to the drawing-in machine, and in that the drawing-in frame, during its displacement along the drawing-in machine, is driven separately from the lifting device and the warp-beam truck.
Owing to the fact that, in the drawing-in machine according to the invention, the drawing-in frame is no longer carried in front of a drawing-in truck, but rather is carried by the drawing-in machine during its adjusting movement along the latter, the need for an exceptionally strong construction for the drawing-in frame is dispensed with in the case of the lifting device. The lifting device consequently becomes simpler and less expensive. Special guides in the floor for the drawing-in truck are not necessary so that, in this respect too, a simplification and a reduction in price result.
The invention is described in greater detail below with reference to an exemplary embodiment and the drawings, in which:
FIG. 1 shows a perspective overall representation of a drawing-in machine according to the invention,
FIGS. 2, 3 show a representation of the drawing-in frame of the drawing-in machine of FIG. 1 in two elevations,
FIGS. 4, 5 show a detail of FIG. 2 in two elevations,
FIG. 6 shows a schematic representation of a detail variant of the drawing-in frame,
FIG. 7 shows a front elevation of the transport mechanism of the drawing-in frame of FIG. 2,
FIG. 8 shows a section along line VIII--VIII in FIG. 7; and
FIG. 9 shows a section along line IX--IX in FIG. 7.
According to FIG. 1, the drawing-in machine consists of a mounting stand 1 and various subassemblies arranged in this mounting stand 1, each of which subassemblies represents a functional module. A warp-beam truck 2 with a warp beam,3 arranged thereon can be recognised in front of the mounting stand 1. The warp-beam truck 2 is coupled via the warp beam 3 to a mechanism, referred to below as lifting device 4, for accommodating and holding a drawing-in frame 5 on which the warp threads KF are clamped. This clamping is effected before the actual drawing-in and at a location separate from the drawing-in machine, the drawing-in frame 5 being positioned at the bottom end of the lifting device 4 directly next to the
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patent: 3433499 (1969-03-01), Meierhofer
patent: 3650419 (1972-03-01), Upsher et al.
patent: 4148406 (1979-04-01), Kutzschebauch
patent: 4409710 (1993-10-01), Kofler
patent: 4910837 (1990-03-01), Fujiomoto et al.
Beutler Paul
Piccirillo Marcello
Crowder Clifford D.
Worrell Jr. Larry D.
Zellweger Uster AG
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