CS244454B1 - Circular knitting frame - Google Patents

Abstract

This invention relates to a circular knitting machine for the production of hosiery and the like goods, provided with the means for reciprocatory knitting and with swingably arranged sinker ring cover. The invention solves the problem of positive turning of the sinker ring cover in the places of reversing during reciprocatory running of the machine. This may be done by providing a rotary cam (15) and a follower roller (131) on an arm (130) of a gear segment (13), the gear segment (13) being in mesh with a gear mechanically coupled via another gear (10) with the sinker ring cover. <IMAGE>

Description

(54) Circular knitting machine

The invention relates to a circular knitting machine for the production of hosiery and the like provided with means for reversible knitting and a pivotably arranged platinum ring lid. The invention solves the forced turning of the platinum ring lid by providing the machine with this turning which operates at dead center during machine reversing. ·

244454 2

The invention relates to circular knitting. machines for the manufacture of hosiery and the like, provided with means for reversible knitting and pivotable arrangement with a platinum ring lid.

In the known hosiery knitting machines for the production of hosiery and returnable knitted heels resp. With spokes, during the reversible knitting is rebuilt, respectively. radially aligning the platinum ring lid under the influence of friction, in order to properly lift the discarded sinkers relative to the stress points in both directions of knitting.

A disadvantage of this solution is the large shocks that occur when the lid is stopped by a fixed stop, especially in machines where a larger swing of the lid is required. In addition, this solution also adjusts the speed for. reversible knitting.

SUMMARY OF THE INVENTION The object of the invention is to overcome the above-mentioned disadvantages, which. This is essentially accomplished in that the lid of the platinum ring is mechanically coupled to a device for forcibly turning it at dead center during the reciprocating operation of the machine.

Z (the control according to the invention is shown in the drawing in the exemplary embodiment;

1 and 2 show a schematic representation of a platinum ring lid drive device in a rotational position of the machine, and in FIG. 2 the device is in a reciprocating position. 3 shows a partial axial section through the needle. cylinder and plate with cover drive.

Known single cylinder circular knitting machine. for the production of hosiery with a reversibly knit heel, resp. The needle is provided with a needle cylinder 8 (FIG. 3), in the grooves of which the needles 8 and other sinkers (not shown) are mounted for their selection.

The needles work together to form the stitches of the discard platinum, which are slidably mounted in a planar ring 6 which is fixedly arranged on the needle. rollers £. The sinkers 6 are actuated by platinum radiator rings 2, 1 fixedly arranged in the lid 6 of the platinum ring 7.

The cover 4 is slidably mounted on the bearing balls 4 on the plate ring 6. From below it is attached to the cover £ - a toothed ring £ which, in engagement with the toothed wheel £, is arranged rigidly on the vertical screen.

At the bottom of the vertical shaft JJ. is a further gearwheel 54 in which the gear segment 61 is pivotably mounted on the machine flange 61. The shaft 11 is rotatably mounted in. flange ££

A roller 1 'is arranged on the arm 30' (FIG. 1) of the toothed segment 60. which cooperates with a rotary cam 65 which rotates twice as slowly as the needle cylinder 6 from which the drive is derived.

The cam 15 is formed of two arc curves and £ 152 mariMlním and minimum radius which dopXnu ^ X íavatující two curves 15 la _f £ 53rd Roodd1 between the radii of the arc curves 150 and 152 then determines the swing of the toothed segment 11.

A tension spring 32 is attached to the arm of the toothed segment 13, the other end of which is attached to the machine frame (not shown). Attached to the arm 130 is a centering lever 17 operated by a pull rod 60 and another transmission (not shown) from the machine drum.

The machine is equipped with a well-known returnable (not shown). a mechanism connected to the needle cylinder 6 and two knitting systems which are adapted for reversible knitting. For stroke sinkers 2 are záritové ring 2 and £ formed so that at the first knitting system ^is wntřní ring 2 is provided with a sliding ^- edged! ⁵¹ and 52 ° ^{at the} outer ^Cr ^^ uvacím that ^the edges 61 and 62 and at the second knitting system sliding edges 22 and 21 'and a quick-release edges 63 ££. At points I and III are the load points of the first and second. of the knitting system for the direction of rotary knitting and at points II and Ц thereafter the retraction points. for the return direction of knitting. The lid 7 is pivotable in the range of µM .beta., Which corresponds to the angular difference between the points I and Ц respectively. III and IV.

The funcoe of the device described above is as follows. In rotary knitting, where dka is formed at the pull-in points 1 and III, the lid J is in the position of FIG. 1 and the edges 21, 53 and 64 operate the sinkers 2 and open them only at these locations.

Locking lever - lifts the limb of 17 122 such that £ roller 21 is above the largest radius of the cam 6r p ^e e ^rezent in ^the Nym polyarc £ 22 between points A and B. The sector gear 13 is fluctuations ^ i ^^ t transport and holding the lid is in the position already described - according to FIG. 1.

Upon transition from rotary knitting to a return knitting method, the arresting lever 8 disengages from the arm 32 of the toothed segment 13, and in the spring 132, the roller 1-3L abuts an arc curve 51.

At the time when the needle cylinder movement stops. In the direction of rotation 6, and the rotation in the reverse direction begins, the roller 131, following the spring 132, follows the descent curve 151 of the cam 52 between points 6 and 6 up to the arc curve 152 of the minimum cam radius.

This movement of the toothed segment 52 is transmitted up to the cover Z, which is rotated by an angle θ, so that the edges 21, 2A, 6 and 8, reap. the edges 21, 24, £ 2 and ££ are interchanged from the points 1 and 2, respectively. III of the checkpoints to points II and SE. which are positions suitable for opening the sinkers 2 for this direction. knitting as shown in Fig. 2.

The feed sinkers 2 are now controlled by the insertion edges 24 and 52 and the extension edges! £ 2 and 21 · In this position, the cover Z is held for the duration of rotation in the direction opposite to that of £ Z while the roller 131 is rolling along a curve of £ 52 *

At the opposite bifurcation of the needle cylinder, the curve 153 of the cam 15 begins to lift back the roll 1¾ and thus the arm 10o and the toothed segment 13-se. the cover X is also turned back and actuates the sinkers 2 as described above.

Yet wi ^h ° ^{n d} u ^rot ation knitting is arresting and Fr ^{to 17} okamHku ^when. In this way, the control of the toothed segment 13 and of the cover j has been moved to the original position.

^In yho ^d ou invention is the fact that - the remelting allows ^b ezrázové cover ^position, 'in particular for machines with greater fluctuations and, in particular, at higher knitting speeds. Also, the stops and the limit part are removed. the maximum and minimum cam radius determines the swing of the platinum ring lid.

Claims (3)

SUBJECT OF THE INVENTION Circular knitting machine for the production of hosiery and the like, provided with means for reversible knitting and pivotably arranged with a platinum ring lid, characterized in that the lid (7) of the platinum ring (4) is mechanically coupled to a device for forcibly rotating it machine operation · Circular knitting machine according to claim 1, characterized in that the cover (7) of the platinum ring (4) is mechanically coupled and a gear (Ю) engaging the toothing of the toothed segment (13) with the roller (131) on the arm (130). assigned to the rotary cam (15) · Circular knitting machine according to Claims 1 and 2, characterized in that a locking lever (17) operated from the drum of the machine to lock the toothed segment (13) is associated with the arm (136) of the toothed segment (13) with the roller (131). ) out of contact with the cam (15) ·