CS264552B1 - Knitting and weaving processes on knitting machine adapted for combined knitting and weaving and knitting machine for products of such processes - Google Patents

Abstract

The invention relates to a method of knitting, by which to shed at the same time inserting twins over its entire width which are linked together in the warp knitting weave and tie up warp threads in a loom. When creating vtkaleian multivalent bonds a at least two consecutive warps or weft binding points, se insert the first twins into the opening to shed, made from some warp threads and last twins to the closing to shed. For woven twill 2/2, 3/3 and 4/4 is the gear ratio from the main shaft (4) to the camshaft (3) 1: 2iyse equals the number of weft in the loop binding, wherein the cam (1) assigned to each sheet, has two opposite Strokes (2), in addition to the • cannons (3) offset by -AhO, Solution allows increasing the speed of the swarm without increasing 4 wear of shed equipment and noise machinery.

Description

BACKGROUND OF THE INVENTION The present invention relates both to a method of knitting on a knitting machine, in which double shanks are connected to the shed simultaneously over its entire width which are interconnected in a warp knitting weave and interwoven with the warp threads in a weave. a multi-linkage linkage formed by a system of cams actuating the lever blades and arranged on a camshaft, coupled by a gearing to a machine main shaft, a spike with a spoke and a knitting warp-knitting device having stitch pillars between which warp threads are disposed; intertwined with loop loops in a loom with at least two consecutive warp and weft attachment points o

The knitting machine according to U.S. Pat. No. 155,246 comprises a shed device, a spool with a beam, and a knitting device formed both by a system of knitting needles reciprocating in a direction substantially parallel to the warp yarns and by a system of equal number of reciprocating rollers. a set of knitting needles, each of which is co-knitted with two knitting needles. The arms of the laying members in which the weft yarns drawn from the counter bobbins are guided are in their central starting position parallel to the warp yarns, lie therebetween, and swing in the open shed.

In each open shed the rollers move equally from their central starting position to one of the extreme positions and back, loading into the open hooks of the knitting needles located in their forward position, the weft yarns. in the form of a hairpin, supporting the edges of the fabric and trapped at the end

264 552 with a curl on a knitting needle »These twigs are fed to the distinctive felted fabrics to which they are pricked when they are shed by the knitting needles returning to their seating position»

The shed mechanism of the overwrapping machine is essentially identical to the shed mechanism of conventional uncle weaving machines.

For multi-thread twill, satin, or derived, as many loops as the punched warp threads are used on the weaving and knitting machine »Each of these sheets is individually controlled by a cam, with the cams supported on the camshaft uan denotes a certain binding: u ~ numerator + denominator »kap -kl u u keyframe 2/2 is u = 4» The total transmission ratio from the main shaft of the machine to the shaft is always equal to the inverse of the number of wefts in the duty cycle Ί v uby:

The number of wefts in the fabric pattern substitution is the sum of the numerator and denominator of the fraction by which?

^ (2 'VI knitting machines are used so-called <

cams that are laid at relative blade standstill »Because these are the conventional cams of weaving machines, this relative blade standstill is relatively long» The sheets rise and fall in the interval between these rest positions, which means that the longer is the Hid of the sheets, the faster the lift and retraction of the sheets »

We have therefore proceeded on 'knitting machines' to use so-called, wear-free cams which somewhat improve the kinematics of the leaf movement, contributing to the smoothness of the leaf movement and thereby reducing the noise of the machine and wear of the shed mechanism »

In particular, the movement of the blades and the camshaft speed are the limiting factors for increasing the speed of the knitting machines, while increasing the camshaft speed is associated with greater wear of the shed mechanism including the gear mechanism and increased machine noise »

In order to reduce stress on the leaves of the heddle, multivalent bonds, in particular twill weaves, are used which are more difficult to propose which would make it possible in the method of knitting. vr · t va ntn - ^{1; r} t ·? r 'mi to ple: h, usually

264> 52 multibinding couplings, substantial increase in machine speed without increasing wear of the shed mechanism, including gear mechanism and machine noise, both solved by simple means; performing this method on a conventional knitting machine »

Basically, the knitting process on a weaving machine, in which twin tapes are simultaneously inserted into the shed, which are mutually joined in a warp knitting weave and interwoven with the warp yarns in a weaving weave which according to the invention is essentially fulfilled, that in creating a weave multi-weave alesoon with two consecutive weaves and weft weave points, the first double-weaves are inserted into the warps. it shed, formed from some warp threads of the position of the double-rod into the closing shed »

Fri makes her weave more · ³ weaves with multiple yells two to each other. with the following warp or weft attachment points, <k to the penultimate two-stroke are inserted into the open shed »

According to a variant of the method according to the invention, in forming a multi-bonded bond with more than two successive and weft bonding points thereto, the first half of the pair is inserted into a swirling shed formed from some warp threads. When creating an odd-numbered binding with an odd number of consecutive warp and weft bonding points, the intermediate double-rods are inserted either in the open or shed opening, or ησ. - v * r ».

The brisket was shed

A knitting machine for conducting the method according to the invention, comprising a shedding device for multiaxial ties formed by a system of cams actuating the lever shafts and arranged on the camshaft coupled by a gearing to the main shaft of the machine, a spar with a spoke and a knitting weave having stitch pillars between which the warp threads intertwined with the stitch connecting loops in a weaving weave with at least two successive warp and weft bonding points are characterized according to the invention in that for weaving a 2/2 carp weave á, 4/4 is the transmission ratio from the main shaft 1: 2u, where u ee equals the number of wefts vs the duty cycle to which each blade has two. opposite stroke, but stroke in each other on the camshaft. trimmed by uuC ° ““ 264 552

The solution according to the invention is based on the knowledge resulting from the comparison of weaving and knitting technology.

With conventional weaving technology, only one weft per shank per revolution of the machine's main shaft can be conveyed into the shed at a time during the movement of the heddle leaves, taking into account the weft picking speed.

In the knitting technique, the continuous weft picking over the entire warp width is replaced by laying a plurality of hairpins in the form of a hairpin into the shed by the warp knitting principle, whereby the weft laying speed is substantially higher compared to the conventional weft picking speed.

Thus, the knitting technique allows two or more double taps to be introduced into the same shed at a relatively low shed and the insertion of the two-stems already at the opening and closing shed. In a practical embodiment, this means reducing the length of the cam stroke circumference to substantially one-half, slowing the speed of the shafting shaft in the same ratio and assigning a cam with two oppositely disposed strokes that are offset relative to each other on the camshaft.

In this case, for example, when twisting the camshaft 2/2, the camshaft rotates at half speed, and the blade movement speed is substantially reduced in the same direction, substantially reducing the wear of the shed mechanism and machine noise while achieving a substantially continuous blade movement relative to the blade. for moving the leaves using conventional cams to form twill weave 2/2. These factors make it possible to practically increase the machine speed by up to 100% relative to the machine speed when using conventional cams to form this bond.

In this context, it is assumed that if the knitting machine operates reliably in a plain weave, for example at 450 rpm, with a corresponding camshaft speed, then the interlock of the knitting machine should succeed in forming a twill weave. with reduced cams, at twice the speed of the main shaft, and at a camshaft speed that corresponds to the camshaft speed when forming a plain weave at the above speed.

A further advantage of the invention, apart from the possibility of increasing machine speed, is the use of conventional cams for weaving a plain weave with two oppositely arranged strokes, to form a twill weave according to the invention

264 and conventional twill cams 2/2 to form the twill weave of the invention.

The principle of the invention is evident from the accompanying Vyknou SW which shows schematically in FIG. 1 of known shed-forming device for sheet · pletenotkacím new binding machine, Fig 2 ₀ known shed-forming means for twill 2/2 pletenotkacím machine, FIG. 3, a timing diagram of the movement 2, FIG. 4 is a timing diagram of the movement of the sheets to form the twill weave of the present invention, while maintaining the original speed of the main shaft, and FIG. 5, the shed twill weave of the present invention.

In high-speed weaving machines, for example jet weaving machines, two cams 1 with two oppositely arranged strokes 2 are used for weaving the plain weave 2, which are offset by 90 ° on the camshaft 5 (FIG. 1). The camshaft 3e drives the main shaft 4 of the machine by means of gears 5, 6 in a gear ratio

1: 4c

Giant. 2 shows a shed device of a knitting machine for forming a twill weave 2/2. In the camshaft 8 there are four cams 7 with a stroke 8 offset by 90 ° on the camshaft. The transmission ratio is 1: 4.

Giant. 3 shows a timing diagram of the movement of the four sheets A, -8 C, D in forming a twill weave 2/2 and using the cams 7 of FIG. 2.

It is apparent from this diagram that at one revolution of the main shaft 4 one twin is loaded into the shed 9. the time interval of the movement of the blades per revolution of the main shaft 4 is indicated by X. two, in the warp direction of consecutive double-handles, ie for two revolutions of the main shaft of the machine.

Giant. 4 shows a timing diagram of the movement of the four sheets A, 3C, D produced by the four canvas binding cams 1 (FIG. 1). These cams are offset by 45 ° on the camshaft (fig. 5). The transmission ratio from main shaft 4 to camshaft 2 is 1: 8.

The diagram in FIG. 4 shows that the flow of the leaves is smoother and its speed is less than that of the leaves of the diagram of FIG. 3.

The time diagram of the movement of the blades 1, 3, G, D in FIG.

AND

264 2 2

From this diagram it is clear that when lifting each sheet Λ, B,

C, D are loaded with two twin pieces 9, the time interval X 'being half less than the time interval X according to the diagram in Fig _. 3 <In the exemplary embodiment, conventional canvas cams were used to form twill 2/2 (Fig. ₀ l). ) _o In the present invention, is also included in solution, which in a known manner and by known means, closer here not taught, makes a cam with two oppositely disposed and mutually to a camshaft 45 ° offset strokes whose contour will correspond to the optimum relationship between movement of sheets and laying members of the knitting device.

When creating a 4/4 twill of the invention Buceo gear ratio of the main shaft to the camshaft 1: 2u "ie _a ratio of 1: 16 _of each cam has two diametrically usoořádané strokes that are on vac. ,,, _1Ί . ,. . . 960 °> 600 metal shafts offset each other by o = -ygpo ir-O

For this case, the cams shown in FIG. 2 or special cams can be used whose course would correspond to the optimal relationship between the movement of the blades and the laying members of the knitting device.

For creating twill D / d of the present invention is the gear ratio of the main shaft 1 to the camshaft 12, and each cam has two opposite strokes that are on the camshaft mutually offset by 50 ° _{on the}

Claims (1)

BACKGROUND OF THE INVENTION A method of knitting weaving on a knitting weaving machine, according to which the shed is simultaneously inserted along the width of its sheaves, twins which interconnect each other in a warp knitting weave and tie with the warp? zero in the weave, characterized in that the X * forming a weave multi-weave with an alasoon by two consecutive warp and weft attachment points, insert the first twists into the opening shed formed by the weave? from some warp threads and the last twins to the shed operation according to point 1, in a raft, hearing by ; r ci steeds V '. Γ v ýpj neither t k al c o more neither ties with more o po? se two Z z robou r. ésledu warp a át k ^: ”0 V? · Γ- í V- ', fi Ώ jmi body, vklá dají 'b τ' ⁵ 'or ·. y last d troops to open prcčlunu <, kos, oh poele point characterized by y i ’· at vyéváě - Lj -L weaver more ve z né Vnsbv 0 MORE o how? ·?> dvénn; z a ? nbou n znivé ?? jící? 'i o ?? no perceives a át kovýni v? z n points, pr vá rol ovine; and voj-- éb? k vblnidá to ot ev ír ..ajícího 0 :? orodinou you t sera kó a r., kt vraa thread warp and species á pol? 'in ^ dvojútků do u.s avír nobody s 0 prcblupUo A side view according to claim 1, characterized in that the middle twins are inserted either into the open shed or the open shed, in the case of a closed shed, when forming a multivalent bond with an odd number of successive warp and weft attachment points. 5. A knitting machine for carrying out the method according to items 1 to 4, comprising a shedding device for polybonded weaves formed by a system of cams actuating the levers of the heddle blades and arranged on a camshaft, connected by a gearing to a machine main shaft; forming a knitting warp weave, having stitch pillars between which they are positioned; / warp threads interwoven with stitch loops in a weaving weave with at least two consecutive weft and weft binding points, characterized in that for weaving twill weave 2/2 is the transmission ratio from the main ~ 8 ~ shaft (4) to the camshaft (3) 1: 2u, the weft in the splice clutch, the cam (1) having two opposing shaft strokes (2) ( 3) offset by «· where u equals the number assigned to each sheet relative to each other on the cam