FR2602523A1 - SLAUGHTER DEVICE FOR RECTILINEED CHAINS, IN PARTICULAR KNITTING-COUTURING MACHINES - Google Patents

Abstract

FELLING DEVICE FOR STRAIGHT-LINE CHAIN TRADE, IN PARTICULAR FOR MALIMO TYPE KNITTING-SEWING MACHINES. IT CONSISTS OF PARTIAL FELLING ELEMENTS 1 IN NUMBER EQUAL TO THAT OF NEEDLES, PROVIDED WITH CUT-OUTS 8 FOR THE GUIDANCE OF THE NEEDLES AND FIXED ON A FELLING PLATE BAR 6. THE WIDTH OF THESE ELEMENTS 1 IS AT LEAST EQUAL TO DOUBLE OF THE WIDTH OF THE CUT-OUTS 8 AND THE FELLING PLATE BAR 6 IS SET BACK FROM THE FELLING SURFACE 1 BY A QUANTITY AT LEAST EQUAL TO 5MM. MANUFACTURING OF VOLUMINOUS STRAIGHT-LINE PRODUCTS WITH VERY THICK ARMOR ELEMENTS (FOR EXAMPLE CABLES, ROPES, HOSES) USED AS A WEFT.

Description

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  The invention is used for the manufacture of bulky knits-chaúnes, preferably sewn knits, with particularly thick armor elements inserted as

holding frame.

  In order to obtain a regular mesh formation with the knitting-stitching machines, elements of the holding elements (retaining rods, recessed plates, support bars) are provided in the dead center zone before the knitting needles. for role to go re10 take the material when it is pierced by the knitting needles. During their back-and-forth movement, the knitting needles disappear almost completely between the spacers of the slaughter plate frames. The slaughter plate frames are mounted on the slaughter bar and guide each of several knitting needles, the struts of the slaughter plate frames being

  arranged with the desired spacing between the knitting needles.

  With this known device, it is necessary, when a thick-stitched knit fabric is to be made, to increase the slit width accordingly. he

  It is also necessary to increase the stroke length of the needles accordingly, but this is limited by the extremely important reduction in the efficiency of the machine which results therefrom as well as by the size of the needles.

  The slit width can be at most equal to 5 mm (see Ploch, S. inter alia: Malimo-Hôteswirktechnologie, 1 edition, 1978, VEB Fachbuchverlag Leipzig). That is to say that only warp threads whose diameter is smaller than this limit value can be used because the technologically necessary weft thread must also be able to pass through this slot. As a result, very thick or bulky warp yarns can not be used for

  example son of secondary raw materials.

  The DD-PS 56 045 proposes a slaughtering device which aims to obtain for the sewn knits a perfect formation of the knitted stitches and to prevent the formation of longitudinal strips. To do this, it is planned on the

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  bar felling protrusions that must penetrate into the open spaces between adjacent mesh columns. But

  it does not obtain this way of additional space for making knitted-voluminous products.

  The object of the invention is to create a slaughtering device by which it is possible to use on straight chain machines, preferably knitting machines, even weft yarns that are very thick and bulky while obtaining, without hindering the operation. sufficient space at the places necessary to bring and insert

weft threads.

  This result is achieved by the invention due to the fact that the slaughtering device consists of elementary partial slaughter elements fixed on the slaughter platen bar. 15 Their number corresponds to that of needles. The partial felling elements have cutouts for guiding the needles. The width of the partial felling elements is at least equal to twice the width of these cutouts. The felling platen bar is shifted backward relative to the felling surface by at least

equal to 5 mm.

  The distance between the holes for attachment of the partial felling elements on the felling platen bar may be equal to the width of the felling elements per 25 tiel. Between the partial felling elements between which one or more weft threads are to be inserted, it is possible to leave one or more holes unoccupied, following

their width.

  The cutouts may be in the form of slots or circular holes.

  Due to the fact that the different slaughtering elements are assigned to the knitting needles, it is possible to modify the feed of the weft threads. With the invention, the weft yarns are fed between the slaughter members, so that the slit width is no longer a limiting factor for the weft yarn diameters to be inserted. The diameter of the weft thread therefore depends only on the fineness of the machine

  choice that can be varied without difficulty.

  thanks to the felling elements according to the invention.

  With the device according to the invention, it is possible

  to use weft son particularly thick and bulky, for example secondary raw materials.

  The invention is hereinafter described with reference to an exemplary embodiment with reference to the accompanying drawing, in which: FIG. 1 is a side elevational view of the operating part of a knitting-sewing machine 10 which presents the slaughter device according to the invention with a cutout forming a circular hole; Figure 2 is a side elevational view of a partial felling member having a groove-like cutout; FIG. 3 is a partial elevational view of a

  felling platen bar with partial felling elements identical to that of figure 2.

  The partial felling element 1 shown in FIG. 1 has in its middle part a hole for guiding the knitting needle. This figure shows an example of coordination of the partial felling element 1 according to the invention to the other working members of the functional part itself of a Malimo type knitting-sewing machine. The figure shows as working members the sliding needle 2 with sliding needle mount 2 ', the closure wire 3 with closure wire mount 3', the retaining tip 4 with mounting of the retaining tip 4 and the

retaining bar 6.

  For reasons of clarity of the drawing, the treated materials have not been shown. But the figure clearly shows that the distance between the slaughter plate bar and the retaining elements makes it possible to use

  chain yarns extremely thick and bulky.

  With the device shown, it is possible for example to use without difficulty cables, ropes, hoses and

  analogous materials up to a diameter of 15 mm.

  For example, to manufacture drainage mats,

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  chain wires are used for heavy cables which have a corresponding hydraulic conduction power and, during the consolidation process, they are included in two strips

  bottom by the sewing threads laid in fringes.

  While the bottom strip facing the retaining elements 4, 4 'and 5 is brought substantially flat to the working location, the bottom strip facing the partial felling elements 1 takes a corrugated shape corresponding to different distances between the felling platen bar 6 and the partial felling elements 1, without however having a negative influence on the formation of the stitches. In this case, the slaughter surface 1 'was

proved sufficient.

  FIG. 3 shows the fixing on the slaughter platen bar 6 of the partial slaughter elements 1 which are shown in side elevation in FIG. 2. It remains between the partial slaughter elements 1 having a width of 15 mm free space of 15 mm which allows to bring

  warp threads 12 mm in diameter. It suffices if it is slightly greater than 6 mm since the warp threads penetrate only about halfway between the partial felling elements 1.

  The distance between the practical holes 7 on the slaughter board bar 6 is 15 mm. In a hole 7 of two 25 is screwed a partial felling element 1. The cutouts 8 of the partial felling elements have the shape of grooves and offer the sliding needles 2 guiding also

sure the holes (Figure 1).

O260 IS

Claims (4)

  1. Slaughtering device for rectilinear chain machines, in particular for knitting-stitching machines, for the manufacture of bulky flat products with particularly thick weave elements inserted as holding fabric, characterized in that it consists of by partial cutting elements (1) separated, provided with cutouts (8) for guiding the needles, in number corresponding to the number of needles, fixed on a slaughter platen bar (6), the width of the elements partial slaughter being at least equal to twice the width of the cut-outs and the slaughter platen bar (6) being offset back from the slaughter surface (1 ') by a quantity (s) at less than mm. Slaughter device according to claim 1, characterized in that the distance between holes (7) for fixing the partial slaughter elements (1) on the slaughter plate bar (6) corresponds to the width of the partial felling elements (1) and that in the intervals of the 20 partial felling elements (1) between which must be inserted one or more weft threads, one or more holes,   following their width, are not occupied.   3. Slaughter device according to claim 1, characterized in that the cutouts (8) are slit-shaped.   4. Slaughter device according to claim 1, characterized in that the cutouts (8) are in the form of circular holes.