GB2196026A

GB2196026A - Striping device in a circular knitting device

Info

Publication number: GB2196026A
Application number: GB08717946A
Authority: GB
Inventors: Milan Fucik; Lumir Gross
Original assignee: Elitex Zavody Textilniho; Elitex Koncern Textilniho Strojirenstvi
Current assignee: Elitex Zavody Textilniho; Elitex Koncern Textilniho Strojirenstvi
Priority date: 1986-07-29
Filing date: 1987-07-29
Publication date: 1988-04-20
Anticipated expiration: 2007-07-29
Also published as: IT8721483A0; DE3725171A1; GB8717946D0; IT1222162B; CS255218B1; CS568786A1; GB2196026B

Description

GB2196026A 1 SPECIFICATION Further to the thread guides 1 are assigned

known, not shown, cutting devices to cut and Striping device in a circular knitting device clamp the threads. Parallel to the rod 2 a ver tical shaft 4 is fixed in the plate 3, and on The invention relates to a striping device in 70 said shaft 4 there are rotatably located control circular knitting machine for the production of cams 5 and 6 one above the other in five socks and the like goods. pairs mutually fixedly connected by not shown Known striping device in a double-cylinder screws. Control cams 5 serve to control circular knitting machine comprising the above thread guides 1 via the scanning noses N mentioned elements is controlled by a timing 75 which lean against them. Control cams 6 have device of the machine in a mechanical way. two functions. On the one hand levers 7 loThe object of the invention is to adapt said cated one above the other on vertical rod 8 striping device to be controlled by a control fixed in the plate 3 bear against them. By microcomputer of the machine to enable its means of ropes 9 they control individual cut use without the modification of the concept of 80 ters of not shown cutting devices. Further the actual control of the thread guides and thread control cams 6 are made so that they serve cutting means and to use thus said control for actual racking and therefore pawls 10 are both in electronical and in mechanical type of assigned to them, the pawls 10 being located a knitting machine. swingably one above the other on a vertical According to the invention there is provided 85 arm 11' of a racking lever 11 swingably lo- a striping device in a circular knitting machine cated also on vertical shaft 4. Racking lever for the production of socks and the like goods 11 is assigned to a known, not shown cam comprising thread guides and cutting devices driven from the needle cylinder of the ma to cut and clamp the threads which are con- chine. Each pawl 10 is spring- loaded by a ten trolled by a system of control cams driven by 90 sile spring 10' fixed to it, the other end of the pawls of a programme controlled racking said spring 10' being fixed to the holder 12.

device while the pawls are located on the Individual holders 12 are located between the racking lever and to them are assigned the pawls 10.

blocking levers and to them and to the rack- Selection of individual pawls 10 into opera- ing lever is assigned a securing lever, wherein 95 tional positions is performed by a device con to blocking levers are directly assigned elec- trolled by the control microcomputer of t he tromagnets connected to the control computer machine. To each pawl 10 is assigned a of the machine so that electromagnets of blocking lever 13 provided with three teeth neighbouring blocking levers are mutually an- 13, 132,133 (Fig. 4). Blocking levers 13 are gularly offset. 100 swingably located one above the other on ver- The advantage of the invention is the fact tical rod 14 fixed in the plate 13. Blocking that there is no increase of the built-up space levers 13 are spring- loaded by tension springs which, except for mutual arrangement of the 13' fixed to said blocking levers 13, the other electromagnets, is conditional upon a minimum ends of springs 13' being fixed to levers 7.

number of new elements and further that to 105 Further on the rod 14 there is swingably lo mount the electromagnets no other stand is cated a securing lever 15 comprising a vertical used but a rod on which are located the rod 15' assigned to all blocking levers 13. To blocking levers. the upper end of rod 15' there is fixed An exemplary embodiment of the device ac- another lever 16 (Fig. 2) swingably located on cording to the invention is illustrated in the 110 rod 14, serving to secure vertical position of accompanying drawings, in which: the rod 15'. The end of the securing lever 15 Fig. 1 illustrates a racking device of control fits into a cut-out in the racking lever 11 as is cams of a striping device with illustrated as- evident in Fig. 5. To the teeth 131, 132 133 Of signed electromagnets; individual blocking levers 13 are assigned ar- Fig. 2 is a side view of electromagnets ar- 115 matures of electromagnets 17, up to 175 con- rangement in the direction P according to Fig. nected to a not shown control microcomputer 1; of the machine.

Fig. 3 is axonometric illustration of a holder The armature of the upper electromagnet of an electromagnet; 17, is assigned to the tooth 133 of the upper Fig. 4 is axonometric illustration of a block- 120 blocking lever 13, the armature of the electro- ing lever; and magnet 17, is assigned to the tooth 132 Of Fig. 5 is a schematic illustration of mutual the blocking lever 13 located second from arrangement of a racking and a blocking lever. above, the-armature of the electromagnet 17, A known double-cylinder circular knitting is assigned to the tooth 13, of the blocking machine for the production of socks is pro- 125 lever 13 located third from above, the arma vided with a striping device. Said striping de- ture of the electromagnet 17, is assigned to vice is provided with five thread guides 1 the tooth 13., of the blocking lever 13 located which are swingably located one above the fourth from above and finally the armature of other on a vertical rod 2, the latter being fixed the electromagnet 17, is assigned to the on a carrying plate 3 of the striping device. 130 tooth 132 of the lowermost blocking lever 13.

2 GB2196026A 2 Neighbouring superposed located electromag- cams driven by the pawls of a programme nets 171 up to 17. are thus mutually angularly controlled racking device while the pawls are offset and are stationarily placed in the open- located on the racking lever and to them are ings 18' (Fig. 3) in the holders 18. Each hol- assigned the blocking levers and to them and der 18 is by its other opening 1W pushed on 70 to the racking lever is assigned a securing the rod 14 between the blocking levers 13 lever, wherein to blocking levers are directly except for the upper holder which is above assigned electromagnets connected to the the blocking lever 13, as evident in Fig. 2. control computer of the machine so that elec Further all blocking levers 13 bear by their tromagnets of neighbouring blocking levers are teeth 13, against a vertical stop 19 to adjust 75 mutually angularly offset.

Claims

the positions of the blocking levers 13 and
2. A striping device according

to Claim 1, electromagnets 171-17 The armature of the wherein each blocking lever is provided with electromagnet 173 passes through the opening teeth while armatures of the electromagnets in said stop 19. and of the neighbouring blocking levers are The operation of the above described device 80 assigned always to another tooth.

is as follows. When knitting, the thread is laid
3. A striping device according to Claim 2, by only one thread guide 1, e.g. the one as- wherein the one tooth of all blocking levers signed to the electromagnet 171, and the are assigned to one stop.

other thread guides are in non-operational po-
4. A striping device according to Claim 2, sitions. Racking lever 11 is in front position 85 wherein the electromagnets are placed in hol- where it is secured by the securing lever 15, ders located on a rod where there are also as is evident in Fig.
5. Blocking levers 13 due arranged the blocking levers.

to the action of springs 13' bear by their 5 A striping device in a circular knitting teeth 131 against the vertical stop 19. A com- machine, substantially as hereinbefore de- mand from the control microcomputer of the 90 scribed with reference to the accompanying machine supplies the current into the electro- drawings.

magnet 17, and into the electromagnet 172 the thread guide 1 of which will be brought in Published 1988 at The Patent Office, State House, 66/7 1 HighHolborn, London WC 1 R 4TP. Further copies may be obtained from operation. The armatures of said electromag- The Patent Office, Sales Branch, St MaryCray, Orpington, Kent BR5 3RD.

nets 171 and 172 press the teeth 133 or 13. Printed by Burgess & Son (Abingdon) Ltd. Con. 1187.

of the blocking levers 13 which press on the rod 15' of the securing lever 15. Securing lever 15 comes out of mesh with the racking lever 11, bears against its cam and is swung in the direction S into a rear position. Blocking levers 13 which are not assigned to electro magnets 171 and 172 press on the rear ends of their pawls 10 so that they raise their op erational ends above the teeth of their control cams 6, so that during the forward motion they cannot get in mesh with them. Blocking levers 13 assigned to electromagnets 171 and 172 because they are swung out, do not press the rear ends of their pawls 10, so that said pawls 10 remain on the surface of their control cams 6 and during forward motion they get in mesh with them and cause their indexing. By indexing of the control cams 6 and thus also of the control cams 5 change of respective thread guides 1 takes place and further the current into said electromagnets 17, and 17, is interrupted, while respective blocking levers 13 return back due to the ac tion of springs 13' and act no longer on the rod 15' or on the securing lever 15. Securing lever 15 fits back again into the cut-out in the racking lever 11 and holds it in the front posi tion.

CLAIMS 1. A striping device in a circular knitting machine for the production of socks and the like goods comprising thread guides and cut ting devices to cut and clamp the threads which are controlled by a system of control