CS209007B1 - Lock assembly of double-cylinder circular knitter vor production of socks and similar goods - Google Patents

Abstract

A cam system for two cylinder circular knitting machines for manufacturing hosiery and similar goods, has at least one feed for reciprocatory knitting, comprising both a left and a right clearing cam 11,12 and a triangular central cam 13. To avoid yarn disturbance or breakage, in the path A of the inoperative lifted needles or sliders are made, for either direction of rotation of the needle cylinder, on the central cam 13, behind each other, two lifting edges 130, 131 or 132, 133 for lifting the needles or sliders to an elevated position in which their upper ends are situated above the hooks of the knock over sinkers to prevent yarn from entering the latter and between them, on a cam part situated above the central cam, a retracting edge 211, 213, is made for retracting the needles or sliders to the original lifted position. <IMAGE>

Description

SUMMARY OF THE INVENTION It is an object of the invention to overcome these disadvantages and to specify a solution to the problem, in particular for rough cutting machines. This is essentially accomplished by the fact that in the path of the inoperative raised guide rails for each needle cylinder rotation direction, two lifting edges are provided in succession at the central lock to lift the guide rails to a height where their upper ends are above the nose of the discards and In this way, a tightening edge is formed on the locking part located above the central lock for pulling the guide rails into the original raised position.

An embodiment of the locks according to the invention is shown in the drawing in an exemplary embodiment, where Fig. 1 shows the locks of the "knitting system for reversible knitting" showing the guide of the tongues and the course of the track ^{: the} sinkers tilted by 90 °; Fig. 2 a partial axial section of the needle cylinder showing the position of the guide sinker over the nose of the sinker.

Known two-cylinder circular knitting machine for the manufacture of sock goods and the like. it is also provided with a lower needle cylinder 1 (Fig. 2) and an upper needle cylinder (not shown). The lower needle cylinder 1 is mounted on the inner liner 2 on which the exhaust pipe 3 is fixed. The grooves 4 of the lower needle cylinder 1 accommodate guide sinkers 5 for holding the needles 6 and below them other known sinkers and selectors (not shown). Needles 6 in the formation of stitches

I, they cooperate with the discarding sinkers 7 which are

209007] ί housed in the grooves of the sinker ring 8 and the cam actuated as well as ^the longer ^{alkyl ro-9} and ^{1 * * *} 1 °. AND

The machine is equipped with two identical knitting systems, of which only one is described to explain the invention. The left and right retractable locks 11 and 12 '(FIG. 1), a central lock 13 of triangular shape, and an auxiliary lock are arranged in the path of the lower knees 51 of the guide sinkers 5. 14. Then there are left. and a right lift lock 15 and 16. In the path of the upper knees 52 of the guide sinkers 5 are arranged left and right density locks 17 and 18 and a middle auxiliary lock 19 and an overrider 20. For guiding the sinkers 5 there is a lock ring 21, of the needles 6 there is a conductor of the tongues 22.

In reversible knitting, the needles 6 are divided into working and non-working needles in a known manner. For the direction of rotation S of the needle cylinder 1, the lower butts 51 of the raised non-working guide sinkers 5 run along lane A and the lower butts 51 of the working guide sinkers 5 along lane B. The ejection sinkers 7 then pass along lane C in both knitting directions S and S. '

In reversible knitting, the guide V is placed through the opening O in the guide of the tongue tongues 22. to the hole 'O, the discard sinkers 7 are opened and lifted; The elbows 51 of the non-working guide sinkers 5 along the I lifting edge 130 of the middle lock 13 into the raised and inoperative positions raise the tips of the guide sinkers 5 above the nose of the ejection sinkers 7 so that the thread P cannot 2, the guide sinker tips 5 are thus lifted from track D to track E. However, immediately afterwards, the guide sinker tips 7 are pulled down along track: E by the pulling edge 211 of the lock ring j 21 so as not to rub the yarn P between the tips. guide of the sinker 5 and the tongue guide 22 and lifted again to the original level by the lifting edge 131 of the middle lock 13. At this height, the non-working guide sinkers 15 move up to the pulling edge. 212 lock Even the ring 21 by which they are withdrawn. to the original As can be seen, the guide sinkers 5 are actually raised higher than it is.

i. normal non - working position in. spot in front of the hole. ί ° until. The location of the ejection sinkers is closed, j ět <is w from the course of the paths C of the ejection sinkers 7. In this open range. ! 'O ^ azo ^ ⁷ m ptetrn ^already oj e ^d t ^{d d} к introduction ee ^{i 1}

P underneath the nose of the discarded sinkers when rotating in the i direction in the direction of the guide sinkers 5 therefore block the thread P.

O ^Bd n ^{b e} p ^s · Toten needle in & ce ¹ In the direction ^{of S *} '. ! it is necessary to prevent the thread P from entering the open noses; of the ejection sinkers 7 between the opening O and the location I where the ejection sinkers 7 are open, as seen from the course of the track C. This is again provided by the lifting edge. 132 of the central lock 13, the tightening edge 213 of the lock ring 21, the lifting edge 133 i of the central lock 13, and the tightening edge 214 of the lock; These edges are symmetrical to the edges. 130,211,131 and 212 and their function is the same. c *

In the context of the invention, it is possible to use a middle lock in the path of the upper knees of the guide sinkers while the download would be performed by another lock! part than the lock ring. The main advan- i ^d ^ ou in tezu is the one with ^the Ute ^{THE COMPANY, Z} e are also ¹ ^ FOE prevent ingress thread clip noses open odha- i; threads and threads are not disturbed. -

Claims (1)

OBJECT OF THE INVENTION 1. Lock system of a two-cylinder circular knitting machine for the manufacture of socks and the like with at least one knitting system | for reversible knitting, incorporating left and right retractable locks and a triangular central lock 7. A method as claimed in claim ¹ , characterized in that raised in the path (A) of the non-working ¹ . of the guide rails (5) for each rotation direction (S, S ') of the needle cylinder (1), two lifting edges (130, 131, 132 and 133, 133, respectively) are formed one behind the other in the middle lock (13) 5) to a height where their upper ends are above the nose. and between them, a tightening edge (211, ii and 213, respectively) is formed on the engagement piece (21) located above the central and 1 locks (13) to retract the guide rails (5) into the original and raised ones respectively. position. . * * 2. The lock assembly according to claim 1, characterized by: The device according to claim 1, characterized in that the middle lock (13) is arranged in the path i of the lower knees (51) of the guide sinkers (5) and. over! a guide ring (21) is provided with a pull-on ring The edges (211, 213 and 212, and 214, respectively) for retracting the guide rails (5) to their original raised position.