DE2264728A1 - Circular loom shuttle system - has an exchange unit and yarn cutter located on the loom circumference - Google Patents

Abstract

The shuttle operation for use in a circular loom, where the shuttles are driven round by a magnetic field, has a shuttle change mechanism located on the circumference of the loom, together with a cutting unit for the yarn. The design allows the shuttles to be exchanged, to replace empty shuttles with those carrying a full load of weft yarn, without stopping the loom action.

Description

BLUMBACH · WESER ■ BERGEN & KRAMER

PATENT LAWYERS IN WIESBADEN AND MUNICH

DIPLlNG. P. G. BlUMBACH DIPL-PHYS. DR. W. WESER ■ DIPL-ING. DRJUR. P. BERGEN DIPL-ING. R. KRAMER

62WIES3ADEN 8 MUNICH 60, FLOSSMANNSTRASSE15

TELEPHONE (089) 883603/883604

P 22 64 /23.5 72 / 8708a

Mitsui & Go., Ltd.
Tokyo, Japan

Circular loom

The invention "relates to a circular loom with a shuttle guide arm revolving around a vertical main shaft, which takes a shuttle with it on a circular path by means of magnetic attraction, furthermore with healds which are mounted in a stationary bearing part individually or in groups so that they can be moved radially to the main shaft and with a the main shaft rotating control device ₅ by which the healds BZV /. Webelitzengruppen according to a predetermined Webprogranrnt can be transferred just before the shuttle into the open shed position and behind the shuttle back to the position ₅ corresponds die.einem closed Webefach *

Circular looms of this type are for example by the DL-PS 47 706 became known. Are supposed to be empty web shooters here

509812/0012

226A728

PATENTANWÄLTE BLUMBACH, WESER, Bt RQ EU A ΚΛΑΜ E. ^, 8 MU NCH EN βΟ, FLOSSMANNSTR. 1 β

are exchanged for full web guards, then it is necessary to turn off the machine. So that the working process of the machine does not have to be interrupted in too short periods of time, the shooters are designed as large-capacity shooters with a high capacity of weft yarn supply and have an arcuate shape. In order to carry the large mass present in large-scale contactors along a circular path, strong magnetic forces are required, which require electromagnets as contactor drive magnets.

The well-known circular loom is as far as the shooters and the Contactor drive magnets are relatively agile, since They protect large area gates to avoid frequent machine shutdowns required. These also require a relatively long stroke of the healds and thus limit the working speed the machine.

The invention is based on the object in a circular loom of the type mentioned in the introduction, an exchange of empty weaving gates for full weaving gates without stopping the machine and thus also to enable the use of shooters with a smaller capacity of weft yarn supply.

The object is achieved by the invention specified in claim 1. Further advantageous refinements of the invention can be found in the subclaims.

509812/0012

PATENT LAWYERS BUUMBACH. WFSER, BERGEN * ΚΛΑΜΕ3, 8 MUNICH βθ, FLOSSMANNSTR. 15th

j ' ·: -!, vfindung will now be explained in more detail by means of an exemplary embodiment based on.; wei j'i / juren. Show it

i ^f ii ". 1 in a schematic representation a section of a circular loom according to the invention with a shuttle changing device in a plan view and

Ji [~ _:. 2 the Schützenwechseleinriclitung in a side view.

λ: each of a shuttle guide arm 20 fastened to a main shaft (not shown) of a circular loom is a magnet 21 which carries a thin plastic plate 22 with a number of holes. An iron shuttle 25 is carried along by the shaft guide arm 20, which passes through the open each, also not shown, and inserts the weft thread Y (see FIG. 2) . The perforated plastic plate 22 serves to (3 Le the magnetic force of attraction acting on the shuttle 23 .mrch to support a suction force and at the same time to prevent the weaver from leaving the shed The reed in a conventional web ε tr.l. 1 takes over.

At a point on the circumference of the circular loom at which a cutting device (not shown) is provided for the fabric hose produced, there is a shuttle changing device which contains the parts Z '- Us 65 ;. The shuttle exchange device allows us the Jebrcr.ii zen after each revolution against another shuttle sus: -: uendung3-3li :, c'raie that the machine must be stopped. You to-

_ 4 _ 509812/0012

BATH ORIGINAL PATENT LAWYERS BLUMBACiH. WF.SER, BKROEN A KRAMER. 8 MUNICH βθ, FLO88MANNSTR. 1 β

summarizes a feeder for new ⁿ shuttle and a discharge device for the reverse accumulated shuttles, whose yarn supply is used up. The two devices are arranged next to one another on one side of the loom, while a photoelectrically acting weft thread monitor is located on the other side. From the tubular warp thread arrangement, two simultaneously produced fabric webs are obtained by continuous separation, which are wound onto a fabric tree after being gripped by spreader rollers and a sand tree.

As can be seen from Figure 2, has a fixedly mounted contactor pickup 56 after completing one revolution a shuttle 25a recorded, the yarn supply has been used up during the cycle. To intercept the arriving web shooter is on the Schützenaufnehmer 56 an interception plate 57 is provided. If the shooter guide arm 20 has the shooter pickup 56 with the plate 57 happens, the shuttle 23a, which had been held by the magnet 21, falls onto the shuttle pick-up due to its own weight 56 and from there through an opening 58 into a downpipe (Fig. 1). From there, for example, it arrives on a conveyor belt to a bobbin changing device. A web shuttle 23b with full.) Weft yarn supply is meanwhile by means of a Schützenzuführuijrsplatte 60 through a shooter input tube 65 into the area next to the shooter pickup 56 has been brought, from where it can be taken from the shooter guide arm when it is a Contactor box 61 releases.

509812/0012 - 5 -

BATH ORIGINAL

PATENTANWÄLTE BUUMBACH, WESER, BcRQtNiKRAMKR, β MÖNCHEN βθ, FLOS3MANN3TR.18

2264723

The shuttle feed plate 60 with the new shuttle 23b is normally covered by the contactor box 61, from which walls 62 and 63 the position of the fed through the pipe 65 Designate web shooters. The contactor box 61 forms with the contactor pick-up 56 a two-armed lever which is on an axis of rotation 6A- is stored. If the Schützenauf taker 56 by inclusion a shooter 23a about the axis of rotation 6A- in the direction of the arrow, a pivoted, the shuttle box 61 also pivots in the direction of arrow b, so that the new shuttle 23b on the shuttle feed plate 60 can follow the shooter guide arm 20.

509812/0012

Claims (2)

PATENTANWÄLTE BLUMBAOH, WESER, BeRQtNAKRAMER, 8 MUNICH βθ. FLOS8MANNSTR. IS P 22 64 728.5 "72 / 87C6a claims 1. Circular loom with a rotating around a vertical main shaft Shooter guide arm, which is activated by magnetic attraction takes a web shuttle on a circular path, also with Vebelitzen that individually or in a fixed bearing part combined in groups are mounted radially to the main shaft and with a rotating with the main shaft Control device via which the healds or heald groups according to a predetermined weaving program immediately in front of the web shuttle in the open shed position and behind the Shuttles can be moved back into the position which corresponds to a closed shed, characterized in that that at one point on the circumference a shooter changing device (56 to 65) and at least on the same place a cutting device for the fabric tube is provided. 2. Circular loom according to claim 1, characterized in that the shuttle changing device a contactor box (61) which is rotatably mounted on an axis of rotation (64) and which has a on one side of the axis of rotation Shuttle pick-up (56) with one in the orbit of the shuttle engaging interception plate (57) and on the other - 2 - 509812/0012 BAD ORIGINAL PATENTANWÄLTE BUUMBMCh., WESER, BORGEN * KRAMFR, β MÜNCHEN BO, FLOSSMANNSTR. IB Side of the axis of rotation has a cover (62, 63) which is located on an underlying contactor feed plate (60) new shuttle (23b) releases when the shuttle box νβ1) when placing a wrapped shuttle (23a) pivots on the shooter pick-up (56). liund weaving machine according to claim 1 or 2, characterized in that: e i; η ζ e i c h η e t that the Schützenführun ^ sarm (20) on its end carries a harnet (21), in front of which a thin plastic plate (22) is arranged with a number of holes. 509812/0012 BAD ORIGINAL Blank page