IT8320701A1 - Circular knitting machine with a single cylinder for the manufacture of hosiery items - Google Patents

Description

DESCRIPTION

of the invention having the title:

"Circular knitting machine with a single cylinder for the manufacture of hosiery articles"

SUMMARY OF THE INVENTION

The invention relates to a circular knitting machine with a single cylinder and four systems, where the fabric is manufactured with the rotation of the needle cylinder with smooth or impoccolata binding, the lock system being suitable for the positioning of the needles and clubs. . The invention solves the problem of the realization of the lock system and the application of the feet of the clubs for high speeds. in the sense that the lock parts for loops are arranged, in the first knitting systems on the trajectory of the needles and in the other knitting systems on the trajectory of the clubs *

EXPLANATION OF THE INVENTION

The invention relates to a circular knitting machine with a single cylinder for the manufacture of hosiery items and the like, in the circle of the needle cylinder, with smooth or looped mesh ligatures, a machine which has a locking system actuating needles? clubs *

Circular knitting machines with a single cylinder and four systems for the manufacture of hosiery articles are known, which are equipped with intermediate clubs for the selection of "mioromesh" designs, which have three series of feet. This arrangement? very likely to fail due to the inclusion in the selectors, why? this insertion is carried out in the long section of the perimeter of the needle cylinder, which reduces the speed? d? work and power of the knitting machine.

This inconvenience? eliminated from another circular knitting machine known for the manufacture of socks, in which clubs with seven sets of feet are used d? one height, these clubs being very long and heavy. This solution corresponds but? to the needs regarding the insertion of the pushers during the knitting d? "micron-mesh" ligatures, and yet at the high knitting speed around 800 revolutions per minute, the inertia and friction of these pushers have a negative effect on the lock parts and on the passing of the needles.

The aim of the invention is to eliminate these drawbacks and to make possible a knitting process which relies on the machine safely at high speeds. of? mmagliatura elevated, which is obtained substantially by the fact that the part? The locks for looped links are arranged in the first lock systems on the trajectory of the needles and in the other lock systems on the trajectory of the clubs.

The arrangement according to the invention? better de written with reference to an example of execution and? represented in the attached drawings, in which:

1 shows a locking system, actuating needles and clubs, of a circular knitting machine with four systems;

Figure 2 shows a partial axial section of the needle cylinder in the region of the collecting lock part with a representation of the actuating lock parts;

figure 3 shows part? d? lock and lock rings of an imaging system for carrying out a "micro-mesh" selection;

Figures 4 to 6 show individual positions of the different lock part, seen from above; Figure 7 shows a part of a divided lock, in side view;

Figure 8 shows an arrangement of the feet of the clubs in the needle cylinder;

figure 9 shows an activity? pushers during the knitting of the loops.

A circular knitting machine with a single cylinder and four systems, per se? note, for the manufacture of hosiery items,? equipped with a cylinder 1 of the needles (figure 2), in whose longitudinal grooves 2 needles 3 B clubs 4 are arranged, movable. The needles 3 are equipped with feet 1a, to which lock parts are coordinated for their actuation . Any system of knitting? equipped with a 5 to 5 collecting lock part and a 6 to 6 lock counterpart. In the first and third storage systems, lock parts from to 7 are provided, which can be displaced radially, for raising the needles to the collecting position. In the second and fourth knitting systems are 8 ° collet lock parts provided. 8g, radially displaceable, and lifting clamp parts 9 ^ and 9g, radially displaceable and connected to them, so that their working edges form a working lifting edge, passing through, for lifting the needles 3 to the collection position. The vertices of the aforementioned lifting lock parts 7 ^, 7 ^, and 9 ^? 9g, 3 * find below the edges of parts of the collector lock, so that? during knitting substantially the feet 3 of the needles 3 cannot, as a result of the inertia, reach a higher position. pickup position. The stems d? am the two lock parts mentioned? 8 ^? 9 ^, and 82? 9g are supported displacably in the support 10 (Figures 4 to H, which is found in the first knitting system. The part of the neck lock 8 ^, 82, is provided with a pin 11, which passes through the groove 12 of the support 10 and to which a pawl 13 is coordinated. The pawl 13 is held by a spring 13 in the support 10 and is operated by means of a cable 14 from a control device not shown, for example by a control drum. ? of the shank of the part of the lifting sling 9 ^? 92 * is connected to a plate 15? The plate 15 carries an adjusting screw 16 t on which rests a control lever 17 * which is also operated by a control device. The plate 15 acts on the shank of the insert lock part 8 ^, 8g. The aforementioned lock parts 8 ^, 8 ^, 9 ^? $ 2? are sprung by means of a spring 18 (figure 7) , which is mounted inside a telescope 18?, which rests on the s pin 19, provided in the shank of the lifting lock part 9 ^? Furthermore, upstream of the collecting lock part 5 of the first imaging system there are two radially displaceable lock parts 20, 21, which serve to correctly open the agiles before transferring the loops from the transfer plates to the needles *.

In the trajectory of the clubs 4, radially displaceable lifting lock parts 22, 23 and 22, 23, are provided in the first and third loom systems, and precisely in the translation of the feet 4 and 4. Below these are provided in the trajectory of the feet from 4 to 4, a series of pushers 24 ^ in the first stuffing system and a series of pushers 24 ^ in the third knitting system which are operated by the selector device. for knitting of "micro-mesh" designs. In the trajectory of the feet 4g are then foreseen, in the first and in the third one, outside the pushers 24 ^, 24 ^? radially displaceable frame lock parts 251? 253-In the second knitting system, in the trajectory of the feet 4 ^ and 4g, two radially displaceable lifting lock parts 26 C_ are provided. and 27 t0-, and in the fourth knitting system h provided, in the trajectory of the feet 4 ^? a lock part 28, radially displaceable.

Furthermore, an upper lock ring 29 and a lower lock ring 30 are provided here for the actuation of the clubs 4. performed in such a way that in the context of the collection in the first and in the third knitting system there? an oblique downward edge 30 ^, short (figure 3), which is followed by a lifting edge 30 ^ long, 31 ^ and 31 ^ respectively, which goes up to a further knitting system, so that? after the incidence of the club, its stress substantially decreases and with it also the danger of breaking. This trick is not? adopted in the second and fourth weaving system, why? in these imaging systems, the clubs (with the exception of the knitting of a c8te-cheval ligature) are at rest.

The upper set of 4 feet. | club has three heights and? equipped in the middle? Y (figure 8) of the needle cylinder, of short and medium feet in 1: 1 distribution, and in the second half? X of the needle cylinder? equipped with short and long feet also in distribution 1: 1. The second upper series 4 ^ also has three heights and? also equipped with feet only on the clubs 4 applied below the short feet 4 ^? The half? Y of the ci

the needle cylinder has short feet and the half? X of the cylinder of the agitates has medium and long feet with 1: 1 distribution. Five other series of feet (^) 4 ^ - have two heights in such a way that the pins 4 ^ and 4? are found in alternation only with distribution 2: 2 of the half? X, Two other sets of pins 4 ^ and 4g are arranged in the same way, but only in the middle? Y. the series of feet 4 ^? also shared 2: 2 and? arranged in both halves? X, Y in such a way for oul in the half? X are all 4 short pins present? and in the remaining arch there are medium and long legs. The latest set of 4g feet features short feet in the me t? Y and long feet in the middle? X and precisely in all 4 * clubs

the function of the lock parts, the keys and the needles described above? the following. In the first and third knitting systems, during knitting with open ligatures, lock parts are excluded for operating the. the clubs 4, so that? the latter move horizontally (the trajectory a of the feet 4 ^) and the needles 3 are operated only by the lifting lock parts 7 ^ and 7 ^? and raise the needles 3 up to the collecting position (the trajectory

ria? of the feet 3 ^)? During the knitting of the lugs the lifting latch parts 7 ^ and 7 ^ are excluded and the closure of the needles 3 is carried out by means of pushers 24 ^ and 24y which are operated by a cam drum of per and <5 known. The pins 4g of the clubs 4 are raised by a part of the ferrule lock 25 ^? which thus does not allow the non-selected clubs 4 in the center of the arrival surface to end up in the pushers 24 and 24 respectively. For example when knitting a tie 21 by itself? note ("micromesh" ligature) (figure 9) the pushers 24 ^ cooperate with the individual heights of the feet 4 ^ and 4 ^. The pusher 24. for the 4 ^ feet? permanently inserted and selects 3 needles with 2J2 divisions we pri. jao knitting system. The pushers 24. for the series of feet from 4 ^ to 4g alternate in such a way that they raise higher feet. long of the clubs 4 for a 3r1 distribution in the first and fifth ranks of jerseys, or instead are they inactive? (figure 9) * In the third blade system in the seventh series there is no lock part and the pushers 24 ^ alternately select either the feet of both heights or

also only the feet pi? long.

The parts of the lift lock 22 22 y and 23 ^, 23 ^? they are active during the processing of a warp-knit binding, a cotecaval binding, a tip and during the execution of auxiliary functions, for example during the imbocoolatura. The division 1: 3 for the insertion of the meshes is carried out by means of the 4g long feet, that is to say it begins in the second series in the first knitting system and in the seventh series of the clubs 4 in the second half? Y (figure 9)? The second and fourth knitting systems are equipped to work a smooth (solid) knit fabric, c8te-ch? Val and dim? nution of the stitches when knitting a closed toe. As for the "cote-cheval" binding, the parts of the embouchure lock 8 ^, 8g, and the parts d? lock 9 ^, 9g, are operable in an autonomous way, where during the processing of this binding the parts of the lock 9 ^ are excluded and the needles are raised only in the embossing position, how? inferable from the course of the 3 ^ feet in the trajectory c. When processing a smooth (joined) ligature, are the lock parts 9 ^ 9g also inserted? cosicch? the needles 3 are raised up to the collecting position (trajectory b).

The actuation of the aforementioned lock parts is carried out in a manner similar to that described with reference to a second frame system. During the activity? the two lock parts and 9 ^ are controlled in common by a lever 17 pressing the adjustment screw 16, where by means of the plate 15 the movement is transmitted to the shank of the insert lock part 8 ^. After the displacement from the position according to Figure 4 to the position according to Figure 6, there is a cable 14? detached and the spring 13 'moves the pawl 13 so as to engage the pin 11 (Figure 6). The control lever 17 is raised and for an elastic action the part 9 of the lifting lock moves backwards (Figure 5). The insert lock part 8 is then disengaged in such a way that under the action of the tie rod the pawl 13 comes out and the lock part d? emboccolatura Go Back. When processing a smooth (united) binding, the two parts of the greenhouse * ture 8 ^, 9? are they kept active by the control lever 17? while the pawl? idle.

Claims (12)

1) Circular knitting machine with a single cylinder for the manufacture of hosiery items and the like? around the cylinder of the needles, with smooth (joined) or looped ligatures, which has a lock system that activates needles and clubs, characterized by the fact that the parts of the binding lock are provided, in the first systems of knitting in the trajectory of the needles , and in the other knitting systems, in the trajectory of the clubs. 2) Circular knitting machine according to claim 1, characterized in that in the trajectory of the clubs above the part of the mouthpiece lock,? fixed a series of pushers for the selection of the "mi cro-mesh?" designs. 3) Circular knitting machine according to claim 2, characterized in that at the end? of the working edge of a part of the bushing lock as well as the ends give the working edges of the pushers for the selection of the "micro-mesh" designs and the natural parts, which lift clubs and needles directly into position pick-up, protrude under the pick-up edge of the pick-up lock part. 4) Circular knitting machine according to claim 1, characterized in that the part of the entry lock in the trajectory of the needles is followed by a part of the lifting lock for lifting into the collecting position in such a way that the edges thereof form a through lifting edge. 5) Circular knitting machine according to claim 4, characterized in that the stems of the two mentioned lock parts are mounted in the support side by side, movable and sprung. of the shank of the insert lock part being provided with a plate which passes the shank of the lifting lock part, on the plate resting a control lever and on the shank being fixed a pin passing through the groove in the support and to which? coordinated a sprung pawl which? operated as the control lever by a machine control device. 6) Circular knitting machine according to claims 4 and 5, characterized in that the vertex of the lifting lock part in the path of the needles and the vertex of the lifting lock parts in the trajectory of the upper legs of the clubs, protrude under the corner of collecting part of the collection ser nature. 7) Circular knitting machine according to claims 2 to 4 and 6, characterized in that the other lock parts in the path of the clubs in knitting systems in which there are no entry lock parts in the path of the clubs, are more ?. steep than are the lock parts in loom systems in which there are chuck lock parts. 8) Circular knitting machine according to the preceding claims, characterized in that on the lower lock ring for guiding the clubs in knitting systems in which in the path of the clubs there are parts of the keyhole lock *, short descending oblique edges are obtained and connecting with these long lifting edges which protrude from further knitting systems. 9) Circular knitting machine according to claims 1, 2 and 3? characterized by the fact that the feet of the clubs in the trajectory of the parts d? bit lock, are short in one half? of the cylinder of the needles and are long in the other half? needle cylinder. 10) Circular knitting machine according to claim 9, characterized by the fact that above the feet of the clubs in the trajectory of the parts of the bushing lock there are five series of feet for the cooperation with the pushers for the selection " micro-mesh ", where the two upper series of feet only in one half? of the needle cylinder always have a short foot and a long foot with 2: 2 distribution in alternation, two series lying under these feet have feet only in the second half? of the cylinder of the needles with equal distribution and the last series has feet with a division 2: 2 in such a way that in the middle? of the cylinder of the needles in which the two upper series have no feet, there are long and medium feet, and in the other half? of the needle cylinder there are short feet. 11) Circular knitting machine according to claim 10, characterized in that above the feet for the cooperation with the pushers for the "micro-mesh" selection there are two series of feet for the cooperation with the lock parts here dislocated, the upper series in one half? of the needle cylinder presenting alternating short and medium feet and in the other half? needle cylinder long and short presser feet. 12) Circular knitting machine with a single cylinder for the manufacture of hosiery and similar items, in whole or in substantial part as described and illustrated and for the specified purposes.