CS229016B1 - Bandage and machine for nanufacturing same - Google Patents

Abstract

The bandage consists of a warpknit structure and groups of warp threads 4 disposed between wales 5 of closed stitches and interlaced in plain weave by connecting loops 7 extending across between the adjacent wales of closed stitches, the legs of a pair of said connecting loops of one and the same closed stitch being interlaced by warp threads in one section (3a or 3b) of said group correspondingly while the legs of said pair being interlaced by warp threads in another section (3b or 3a) of said group in a different manner relative to each other. Intermediate wales 11 of open stitches may be provided. The bandage is made on a machine with a harness for making a shed of warp threads, oscillatory lapping guides and a warpwise-displaceable reed. <IMAGE>

Description

The invention relates to a bandage with advantageous robo-economic and technical parameters and machines for its production.

The bandage is formed by a knitting warp weave (1) and groups (3) of warp yarns (4) located between the posts (5) of the closed eyelets (6) and the connecting loops (7). extending between adjacent posts (5) of closed loops (6), in plain weave, with a pair of loops (7) of the same closed loop (6) intermingling in the first part (3a) of the warp thread group (3), while the same a pair of connecting loops (7) interweave each other in the second part (3b) of the warp thread group (3).

Bandages can be produced on a modified knitting machine according to the Czech. AO No 153 246.

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BACKGROUND OF THE INVENTION The present invention relates to a bandage in the form of a narrow medical article 8 with a thin thread structure, as well as to a machine for the manufacture thereof, comprising a shed and a knitting device formed on the one hand by a set of knitting needles reciprocating in a direction substantially parallel to the warp threads. a system of - an equal number of equally reciprocating pivoting rollers parallel to a set of knitting needles, each of which cooperates with two knitting needles, wherein the arms of the rollers in which the weft threads are guided - and which are parallel to the warp The threads lie between them in the closed shed and are pivoted in the open shed.

The elastic or normal bandages are fabricated as a woven, knitted, mesh or nonwoven fabric. The more extensive types of bandages have right regions. It is that the bandages, as a mass assortment, meet both production and economic conditions. - This assortment is produced on high-performance production machines, whose production technique usually affects the design of the bandage. For example, bandages manufactured on pneumatic needle-punching machines are characterized by double wefts.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bandage with advantageous manufacturing and technical parameters.

These conditions are met by a bandage which, according to the invention, is formed by a knitting warp weave and groups of warp yarns located between the stitch pillars and strands of connecting loops extending between adjacent stitch pillars, in a plain weave, the loops of the same closed loop tie the same in the first part of the warp thread group, while the same pair of tie loops tie in the second part of the warp thread group differently from each other.

The number of warp threads in both parts of the warp thread group may be different. However, in terms of appearance, it is preferred that:. both of the warp thread groups differ by a maximum of one warp thread. If the warp thread group is odd, the two parts differ by one warp thread. If the group is even, then the number of warp threads in both parts is the same.

The different interconnection of the loop pairs in the two parts of the warp thread group provides the desirable shape stability of the relatively sparse thread structure of the bandage, in particular preventing lateral displacement of the warp threads between the posts of the closed stitches.

If desired, the shape stability of the bandage can be further enhanced by providing an open stitch post formed from each connecting loop between adjacent edge warp threads of both parts of the warp thread group.

An essential advantage of the bandages according to the invention is the advantageous, purposeful flattening of the tetletia to the shape of the body part to be treated, which is an unexpected consequence of the intrinsic features of the invention set forth in the definition of the invention.

The bandage also provides other advantages that the knitted fabrics bring according to the basic MS. No. 146 269. The bandage has solid right edges and is produced on high-performance knitting machines in any width side by side.

Any warp and weft material, possibly elastic, used for medical goods can be used to make the bandage.

The sparse thread structure with single-stitch columns allows the use as a weft mat for warp knitting of spun yarns that have not previously been useful in plurality of known species.

. The bandage according to the invention means an extension of the assortment pletejotkajij according to the basic MS. No. 146,269 for medical textiles.

The prior art, even in general form, does not include the possibility of using knitted fabrics for the manufacture of bandages.

The bandage according to the invention is a new specific kind of knitted fabric with a new unexpected effect.

The bandages according to the invention can be manufactured on a machine, the basic principle and functions of which are explained and described in Czech. U.S. Patent No. 153,246.

The essence of this machine is that it comprises a shed device and a knitting device formed both by a system of knitting needles reciprocating in a direction substantially parallel to the warp threads and by a system of equal number of equally reciprocating rollers parallel to the system of knitting needles. each of which cooperates with two knitting needles, the arms of the laying members in which the weft yarns are guided and which. they are in their central starting position parallel to the yarn threads and lie with the shed closed. between them and oscillate in an open shed.

The modification of the machine for the production of a bandage according to the invention consists in the adjustment of the shed device for binding the knuckle 2/2 and in the specific instructions of the warp yarns to the beam.

In addition, a modified knitting mechanism is used to produce a bandage with open stitch pillars positioned between the outer warp threads of portions of the warp thread groups, the principle being that an auxiliary knitting needle is positioned between each pair of adjacent knitting needles open eyes from the connecting loops.

Exemplary embodiments of the bandage and the machine for its manufacture are schematically shown in the accompanying drawings, wherein Fig. 1 shows a bandage in partial top view, Fig. 2 a bandage of another construction in partial top view, Fig. 3 a machine for manufacturing bandages according to Fig. 1; 2, in a partial side view, FIGS. 4 and 5, the knitting mechanism of the bandage machine according to FIG. 1 in two different phases, in a partial top view, FIG. 6 a control instruction for a peeling device; and Figures 8 and 9 of the knitting mechanism for manufacturing the bandage of Figure 2 in two different manufacturing stages, in a partial top view.

Ns'obr. 1 schematically illustrates a portion of a bandage according to the invention which comprises a knitting warp bond 1 formed from weft yarns 22 and a group of warp yarns positioned between the posts 2 ^{of the} closed stitches 6.

The connecting loops extending between adjacent posts interconnect with the warp threads in a plain weave. Each group of warp threads 4 ϋθ divided into two parts 38. 3b. In the exemplary embodiment, the number of warp threads in both portions 3a. 3b identical.

A pair of connecting loops extending from the same closed loop 6 interweaves the same in the first portion 3a of the warp threads d, while in the second part 3b of the warp threads 4 it binds differently, which means that one connecting loop 7 of this pair interlocks with the same warp threads with respect to the second connecting loop of the pair.

The warp knitting weave in this case is a leotard.

In the exemplary embodiment, the edges of the bandage 8 are formed from the reversing curves 2 of the outer pillar 2. ^{of the} closed loops The pairs of reversing curves 2 of the same closed loop 6 interweave with the outer group 10 of the warp threads Д ⁱⁿ plain weave.

Optionally, the edges of the fabric may be formed by a stack of closed stitches and of stitches of an auxiliary edge yarn. However, this region does not have sufficient shape stability.

In FIG. 2, another embodiment of the bandage according to the invention is shown by way of example. In order to provide greater protection against transverse displacement of the warp threads between the stitch pillars, the staple column 1.1 is opened between the outer warp threads 4 of both warp thread portions 3a, 3b. 2, formed of all the connecting loops (6).

The warp knitting weave in this case is twill.

The fabrics of Figs. 1 and 2 can be produced on the machine schematically shown in Fig. 3.

In the transverse bed 13, immobilized between the side walls of the machine (not shown) under the warp threads 4, in front of the lit brake 14, a set of rollers 15 is pivoted.

The flap member 15 is formed by a shank 16, which in its central part is provided with a tongue arm 17, shaped by a tongue, terminated by a guide eye 18, in which the weft thread 2 _t unwound from the weft pattern not shown. of the comb bar 19, the reciprocating movement of which is controlled by a movement system (not shown), the machine is further provided with a perch 20 with a beam 21;

In the manufacture of the fabric of FIG. 1, each of the rollers 15 is positioned centrally relative to the yard of knitting needles 22 cooperating with the rollers 15, as shown in FIGS. 4 and 5;

At each shed, in the rear rest position of the spar 20, the laying members 15 simultaneously move from the middle starting position to one extreme laying position and back and at the next shed from the middle starting position to the opposite extreme laying position and back,

The knitting needles 22 are retained by the stem 23 in a receptacle 24 provided with a sleeve 25 mounted on an exchanger 26 mounted on a shaft 27 driven by a 1: 1 transmission from a not shown crankshaft. The hooks 28 of the knitting needles 22 move along a closed curve path. 29 of the droplet shape from its initial front plane in the direction of the arrow 30, to the rear working position and back, within one revolution of the crankshaft,

The direction of rotation of the eccentric 26 is shown by the arrow 31 and the tongue of the knitting needle 22 'by the mark 32. The stitches 23 of the knitting needles 22 are guided by the working edge 33 of the support rail 34, adjustable by known means (not shown).

Between the yokes 35 of the spoke 21 in which the warp threads 4 are guided, wider gaps 36 are provided for the passage of the laying members 15 and the knitting needles 22,

The formed fabric 37, guided by the working edge 33 of the support bar 34, is discharged through the breast (not shown) to the not shown device. The support bar 34 is vertically adjusted such that the working edge 33 directs the knitting needles 22 from their initial front position to the open shed under the weft yarns 2. pointing from the striking plane of the fabric to the guide loops 18 of the laying members 15 *

The shed device (not shown) is adjusted for a twill weave 2/2, wherein the warp threads 4 'are read according to the instructions shown in Fig. 7. In this case, the warp threads 4 of each part 3a of the group 4 are guided alternately into 1, and '3. In this guide, the warp threads 4 with the connecting loops 7 are stitched so that the plain weave in the group 3a of the warp thread group 2 is in relation to the other part. 3b of group 4 shifted by one revolution of the machine, *

Machine according to giant. 3 and 4 shall operate as follows:.

When moving the sley 20 of the front dead center position, marked by dashed lines, in the rear dead center, marked with a full line _of v8tupují hooks of the knitting needles 28 positioned in front of the 22nd přírsznou · x plane. The fabrics 37 by the beams 35 of the spoke 21 into the opening shed and distribute the warp threads 5 to the corresponding position in the respective group J. Once the spike 20 reaches the rear dead center, the pivot members 15 swivel from their middle starting position to one extreme laying position.

The knitting needles 22 are directed by the working edge 33 so that their path is directed below the weft yarn sections 2 from the alignment plane x texXilie 37 to the guide guides 18 of the rollers 15. Before the rollers 15 move. open hooks 28 below the weft yarns 2, captured in the plane of the fabric 37, so that the weft yarns lie above the stalks 23 of the knitting needles <22.

In this way, the first half of the parallel arms of the connecting loops 7 extending from the same closed loop 6 are formed from the weft yarns 2. Still at the rear dead center of the spar 20, the laying members 52 return to their central starting position, thereby forming the second half arms of these connecting loops.

Simultaneously with the movement of the spar 20 from the rear dead center to the stroke, the knitting needles 22 return to their initial position with the weft yarn loops 22 engaged in the hooks 28 and bring the first half arms of the connecting loops 2 to the level of the texXile plane. As the rollers 15 return to the central starting position, the beam 21 of the second half is pushed by the shoulder loop 2 to the edge of the fabric while the shed is changed.

Upon return movement of the knitting needles 22, the weft yarns 2 trapped in the hooks 28 of the knitting needles 22 are passed through the previous stitches 22 through the closed tabs 22, thereby forming pillars 2 of the closed stitches 6.

In the following shed, the described procedure is repeated except that the laying members 15 move to the right extreme laying position, indicated by dashed lines in FIG. 4, thereby forming the second halves of the connecting loop arms.

In the manufacture of the fabric of Fig. 2, the machine schematically shown in Fig. 3 is used, including the shed mechanism shown in Fig. 6 and the warp thread guide to the loom shown in Fig. 7.

According to the invention, a bare knitting needle 3B is disposed between each pair of adjacent knitting needles 22. These auxiliary knitting needles 38 facing the roller member 55. are provided together with the knitting needles 22 in the seat 24.

The operation of the machine is the same as in the production of the fabric according to FIG. 1. The auxiliary knitting needles 38 form in the described operation from all the connecting loops 2 columns of open eyes 12. Each weft thread 2 is simultaneously loaded into the open hooks of the auxiliary knitting needle 38 and knitting needles 22.

Na obir. 8 shows in solid line the position of the laying members 15 in the left extreme laying position and dashed in the right extreme laying position with respect to the position of the knitting needles 22 and auxiliary knitting needles 18. FIG. 5 shows the position of the functional members of the knitting mechanism when the beam is stroked.

Claims (4)

A bandage, characterized in that it is formed by a knitting warp weave (1) and groups (3) of warp threads (4), located between the posts (9) of the closed eyelets (6) passing through the connecting loops (7) » by adjacent posts (5) of closed loops (6), in plain weave, wherein a pair of connecting loops (7) of the same closed loop (6) interconnect in the first part (3a) of the group (3) of warp threads (4). The loops (7) interweave differently in the second part (3b) of the warp thread group (3). Bandage according to claim 1, characterized in that the two parts (3a, 3b) of the warp thread group (3) differ by a maximum of one warp thread (4). Bandage according to claim 1, characterized in that between the adjacent outer warp threads (4) of the two parts (3a, 3b) of the warp thread group (3) there is located a pillar (11) of open loops (12) formed from each connecting loop (7). 4. A machine for manufacturing a bandage according to item 1, comprising a hull device and a knitting device formed both by a system of knitting needles reciprocating in a direction parallel to the warp threads and by a system of equal number of equally reciprocating roller members parallel to the knitting needle system each of which cooperates with two knitting needles, wherein the arms of the laying members in which the weft yarns are guided and which are parallel to the warp yarns in their central starting position, lie between them in a closed shed and swing in an open shed, A second knitting needle (22) is arranged between each pair of adjacent knitting needles (22) opposite the pivot member (15) to form a post (11) of open stitches (12) from the connecting loops (7).