CS255218B1 - Striping device for a circular knitter - Google Patents

Abstract

In a striping device in a double- cylinder circular knitting machine where the thread guides (1) and the cutting devices are controlled by a system of control cams (5,6) driven by pawls (10) of a programme controlled racking device, the pawls (10) being located on a racking lever (11) and being selectively rendered inactive by respective blocking levers (13) and the racking lever (11) being held inactive by a securing lever (15) until the latter is released by the blocking levers (13), the blocking levers (13) are directly actuated by respective electromagnets (17) connected to the control microcomputer of the machine. Electromagnets (17) of neighbouring blocking levers (13) are mutually angularly offset and engage respective teeth (131, 132, 133) on the levers. <IMAGE>

Description

(54) Strip knitting machine

The invention relates to a stripping device of a two-cylinder circular knitting machine, in which the wires and scissors are controlled by a set of control cams driven by paws of a program-controlled spray device mounted on the spray lever and with associated locking levers. A locking lever is assigned to the spray lever and locking levers. The electromagnets connected to the machine control microcomputer are directly assigned to the locking levers. The electromagnets of adjacent locking levers are angularly offset from one another.

2552.18

BACKGROUND OF THE INVENTION The present invention relates to a strip knitting machine of a circular knitting machine for the production of socks or the like, comprising thread guides and scissors for cutting and holding threads controlled by a plurality of control cams driven by pawls. the locking levers are assigned to them and the locking lever is assigned to them.

The known stripping device of a two-cylinder circular knitting machine comprising the above-mentioned parts is operated mechanically from the machine timing device.

SUMMARY OF THE INVENTION The object of the invention is to adapt this striping device to control by means of a microcomputer of the machine so that it can be used without changing the concept of the actual control of the wires and scissors and thus use it for both the electronic and mechanical versions of the knitting machine.

This is essentially accomplished in that the electromagnets connected to the machine control microcomputer are directly associated with the locking levers, and the electromagnets of the adjacent locking levers are angularly offset relative to one another.

The advantage of the invention is that there is no disturbance of the space, which, apart from the mutual arrangement of the electromagnets, is conditioned by the minimum number of new parts and also by the fact that no additional stand is used to hold the electromagnets.

1 shows a top view of the control device of the control cams of the striping apparatus showing the associated electromagnets, FIG. 2 shows a side view in the direction P in FIG. 1 of the arrangement of the electromagnets, FIG. Fig. 3 is an axonometric representation of the electromagnet holder, Fig. 4 is an axonometric representation of the locking lever, Fig. 5 schematically illustrates the mutual arrangement of the thrust and locking levers.

The known two-cylinder circular knitting machine for the production of sock goods is provided with a striping device in each knitting system. The striping device is provided with five thread guides 2, which are pivotably arranged one above the other on a vertical bar 2 fixed to the supporting parts 4 of the striping device. Furthermore, known shears (not shown) for cutting and holding the threads are associated with the conductor 1. In parallel to the rod 2, a vertical shaft 2 # is mounted in the plate 2, on which the control cams 6 and 6 are connected to each other by means of screws (not shown), which are not fixed by means of screws (not shown). The control cams 8 serve to control the yarn guides 1 whose sensing noses N abut on them.

The control cams 6 have a dual function. On the one hand, the levers 7 are placed one above the other on a vertical bar 2 fixed in the plate 2. By means of the cables 6 they control the individual blades of the scissors (not shown). Furthermore, the control cams 6 are designed to also serve for the actual spray and therefore are associated with latches 10 pivotally mounted one above the other on the vertical arm 22 'of the spray lever 21 * pivotally mounted on the vertical shaft 4. a cam (not shown) driven from the machine needle cylinder. Each pawl 10 is spring-loaded with a tension spring ΙΟ ¹ > 3θ3 ^{ίζ the} other end is attached to the bracket

The individual holders 12 are mounted between the latches 10.

To selectively select individual latches 10 to the work poles, a device operated by a machine control computer is used. Each latch 10 is assigned a locking lever 21 provided with three teeth 13 _χ 13 _2, 13 ₃ (Fig. 4). The locking levers 13 are pivotably stacked on top of each other on a vertical bar 14 mounted in the plate 3. The locking levers 13 are spring-loaded to the tension springs 22 '' attached thereto, the other ends of which are mounted on the levers 7. a vertical bar 15 * associated with all locking levers 13. A further lever 16 is attached to the upper end of the bar 15 '(FIG.

2) mounted pivotably on the bar 14 to provide the vertical position of the bar. ‘

Zajišřovací end of the lever 15 engages the notch 11 of the pusher lever, as shown in FIG. 5. К teeth 13 ^, 13 _2, 13 ₃ of each of the locking levers 13 are assigned IZ5 electromagnet connected to an unillustrated control microcomputer of the machine. .

Anchor upper electromagnet j ^e assigned к tooth 13 ^ upper lock lever 13, the electromagnet 172 3 ^е assigned к tooth 13 2 of the second top mounted locking lever 13, the electromagnet 17 ₃ is assigned к tooth 13třetí top mounted locking lever 13, the electromagnet 17 ^ is assigned к 13 tooth ₃ mounted above the fourth lock lever

13, and finally the electromagnet anchor 17g. it is assigned to the tooth 13 _{2 of the} lower locking lever 13.

The adjacent electromegnets 17 to 17 are thus angularly offset relative to one another and are fixed in the openings 18 / (FIG. 3) of the brackets IB. Each bracket 18 is inserted with its second hole 18 '' on the bar 14 between the locking levers 13, except for the upper bracket that is above the locking lever 13, as shown in Figure 2. Further, all the locking levers 13 abut with their teeth 13 to the vertical stop 19 for adjusting the positions of the locking levers 13.

and electromagnets 17- 17. The electromagnetic armature 17 ₃ extends through the opening at said stop 19..

The function of the device described above is as follows. When knitting, only one conductor .1 is placed in the yarn, for example corresponding to the electromagnetic 17.1 * other conductors are in non-working positions. The lever 11 is in the forward position where it is locked by the lock lever 15, as shown in FIG. 5. The locking levers 13, due to the action of the springs 13 ', engage the vertical stop 13 with their teeth 13'. elektromágnetu 17! and into the electromagnetic 17 ₂ , whose yarn guide 3 will be put into operation. The anchors of said electromagnets 17 and 17 push into the teeth 133 and 133 respectively. 13 _two locking levers 13, which pushes the rod 15 / zajiŠEovací lever 15. ZajišEovací lever 15 comes out of engagement with the push lever 11 abuts at its cam is pivoted in the direction S to the back position. The locking lever 13 that are not associated electromagnets 17 ^ 1T_ ₂ and pushes the rear ends of their latches 10 so as to lift their functional ends of its teeth on the driving cam 6, so that during the forward movement can take them.

The locking levers 13 assigned to the electromagnets 17 and 17 ₂ by being pivoted do not press on the rear ends of their latches 10, so that the latches 10 remain on the surface of their control cams 6 and engage them in forward movement and cause them to twist. By turning the driving cam 6 and a driving cam and therefore there .5 к substitution of the conductor 1 and the further к interrupt current to the electromagnets 17 zmíněhých ^ ₂ and 17, whereby the respective locking levers 13 due to the spring 13 'returns and stops acting on the rod 13 ', respectively. Locking lever 13. The locking lever 15 snaps back into the notch of the spray lever 11 and holds it in the forward position.

Claims (4)

OBJECT OF THE INVENTION. A striping device of a circular knitting machine for the manufacture of sock or the like, comprising thread guides and scissors for cutting and holding the threads, controlled by a set of control cams driven by paws of a programmed pusher, the pawls being mounted on and adjacent to the pusher associated locking levers а к them а к pusher lever is assigned ZajišEovací lever, characterized in that к locking páčkám (13) are directly assigned to the electromagnet (17 ^ to 17 <.) connected to the control microcomputer machine, said electromagnets (17 ^ ^and The two locking levers (13), 17 ₍ 17) and 17 (17) are offset angularly relative to each other. Striping device according to claim 1, characterized in that each locking lever 255 218 4 (13) is provided with teeth <13 ^ to 13 ^), wherein the electromagnet (17 ^ ₅ to 17) and adjacent the locking levers (13) are assigned к another tooth (13 ^ to 13 ^). Striping device according to Claims 1 and 2, characterized in that one tooth (13) for all locking levers (13) is associated with one stop (19). Striping device according to Claims 1 and 2, characterized in that the electromagnets (17 - 17) are mounted on holders (18) mounted on the rod (14), where the locking levers (13) are also arranged.