GB1576880A

GB1576880A - Single cylinder circular knitting machine for manufacturing hosiery goods and similar goods

Info

Publication number: GB1576880A
Application number: GB4417677A
Authority: GB
Original assignee: Elitex Zavody Textilniho; Elitex
Current assignee: Elitex Zavody Textilniho; Elitex
Priority date: 1976-12-20
Filing date: 1977-10-24
Publication date: 1980-10-15
Also published as: DE2746247A1; FR2374453B1; DE2746247C2; IT1114172B; FR2374453A1; CS187158B1

Description

($4) SINGLE CYLINDER CIRCULAR KNITTING MACHINE FOR MANUFACTURING HOSIERY GOODS AND SIMILAR GOODS (71) We, ELITEX, KONCERN TEXTIL NIHO STROJIRENSTVI, of Liberec, Czechoslovakia, a corporate body organised and existing under the laws of Czechoslovakia, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to a single cylinder circular knitting machine for the manufacture of hosiery and similar goods, which is provided with means for plating reciprocatory knitted heels or toes of hosiery goods.

Single cylinder circular knitting machines for manuacturing plated goods are known, in which also plating of heels or toes upon reciprocatory operation of the machine is performed. In order to make it possible to introduce the plated yarn through a guide, which is at a longer distance from the needles than a plating yarn guide, it is necessary to displace in the space of the bridge in the latch guide a certain part of the bridge, or the latch guide for the purpose of making possible the introduction of plated yarn.

This displacement and returning of a part of the bridge is performed by a radial motion via a mechanical transmission by a pulse from the control drum of the machine.

This plating device is rather complicated and requires much space, particularly at the point of arranging guides, :where it- is necessary to design a special device for controlling the guides relative to the displaceable part of the bridge. Further, one path an the control drum is necessary for the purpose of controlling, whereby the number of operation steps of the machine is enhanced, this putting high requirements to the size of the control drum and thus also the design of the machine frame.

The purpose of the present invention consists in mitigating the above - disadvantages, and to provide, in a single cylinder circular knitting machine, means for reciprocatory plating which has little space requirements.

According to the present invention there is provided a single cylinder circular knit ting machine for manufacturing hosiery goods and similar goods, wherein at a feed a latch guide is formed in its lower part as a bridge the upper of the latch guide is interrupted by a vertical inclined groove which opens from above, and the upper part of the latch guide is separated from the bridge by a horizontal opening into which the vertical inclined groove opens from below, a yarn guide is provided with two tubes arranged behind each other for plated and plating yarn and a blocking member in the form of a mock yarn guide is provided beside the yarn guide proper and is movable into and out of a position where it engages the vertical inclined groove.

An embodiment of the present invention will now be described, by way af example, with reference to the accompanying draw ings, in which: Fig. 1 is a front view of the latch guide bridge together with the representation of the yarn guide for plated and plating yarn and the blocking member in their lower positions and the needle and yarn courses upon reciprocatory operation; Fig, 2 is the same as shown in Fig. 1 but in plan view without the needles and ylarns; and Fig. 3 is the same as shown in Fig. 1 but in axonometric view without the blocking member.

A single cylinder circular knitting machine is provided with a not represented needle cylinder, in which are mounted knitting needles 1 which are controlled by a not represented cam system. For the purpose of controlling needles 1, -a latch guide 2 surrounds to the needle cylinder, in which are provided at the feeds bridges for introduc- ing yarn. For the purpose of explaining the present invention, the arrangement of latch guide 2 is shown in Figs. 1, 2 and -3 in the main feed with bridge 3, where laying d yarns is performed during the reciprocatory operation of the needle cylinder. For the purpose of laying plated yarn P1 and plating yarn P2, a guide 4 is arranged there, plated yarn P1 being laid by tube 41 and plating yarn P2 by tube 42.Tube 41 is arranged more apart from the needles 1 and its lower end is higher than the lower end of tube 42, which is situated nearer to needles 1. Beside guide 4 is provided a blocking member 5 in the form of a mock yarn guide, the operative end of which engages in its lower position a vertical inclined groove 21 in the latch guide 2 and closes it in such a manner as shown in Figs. 1 and 2. Further, a horizontal opening 22 is provided in latch guide 2 for the passage of introduced plated yarn Pt, said vertical inclined groove 21 opening into said opening 22. In the upper part of latch guide 2 are made shaped grooves 23 for the tubes of further, not represented guides of this feed and in the lower part below horizontal opening 22 the bridge 3 as already mentioned.

For the purpose of reciprocatory knitting of the heel or toe of a hosiery knitwork, needles 1 are distributed into operative and inoperative needles the latter of which pass at an elevated position. Guide 4 is displaced downwards into the lower operative position during movement of the needles 1 in the direction S, plated yarn P1 being lowered through the vertical inclined groove 21 and into horizontal opening 22, whereupon it is supported against the left edge of bridge 3 while being laid into needles 1, as can be seen from Figs. 1 and 3. Plating yarn P2 is also introduced in the usual manner into needles 1, and is supported also against the left edge of bridge 3.After laying plated yarn P1 and plating yarn P2 into needles 1, the blocking member 5 is also lowered into the lower position and closes the ver tical inclined groove 21.

The blocking member 5 has the purpose not to permit upon reciprocatory operation a possible closing of the latches of the in operative needles (not represented), which pass - at an elevated position, their latches otherwise being apt to be closed by the edge of vertical inclined groove 21, or pos sibly even broken during movement of the needles in the direction opposite to the direction 5 Plated yarn P1 and plating yarn P2 are drawn by needles 1, and upon transition into the direction of movement opposite to direction S the entrained yarns P1 and P2 move to the right side of bridge 3 again into the required sequence of grouping, as shown in Figs. 1 and 3, the plated yarn P1 moving across the horizontal opening 22 under the tube 42.In that manner, laying of both plated yarn P1 and plating yarn P2 is per fonned upon reciprocatory knitting, and in the dead centre, i.e. when needles 1 do not draw yarns P1 and P2, said yarns are drawn back by not represented tension trappers.

Upon finishing reciprocatory knitting, after the needle cylinder resumes rotary motion in the direction S, locking guide 5 is again lifted and plated yarn P1 is taken out from needles 1 through the vertical inclined groove 21, and both yarns are entrapped and cut by a known, not represented device on the dial.

In the case of a machine in which - reciprocatory knitting is performed in two feeds, the same plating means are located also in the second feed.

The main advantage of the present invention - consists in that by forming a vertical inclined groove and a horizontal opening by using a blocking member in the form of a mock yarn guide, the laying of plated ándvplating yarn guide, the laying of knitting machine is secured in a simple and reliable manner.

WHAT WE CLAIM IS:- 1. A single cylinder circular knitting machine for manufacturing hosiery goods and similar goods, wherein at a feed a latch guide is formed in its lower part as a bridge the upper part of the latch guide is interrupted by a vertical inclined groove which opens from above, and the upper part of the latch guide is separated from the bridge by a horizontal opening into which the vertical inclined groove opens from below, a yarn guide is provided with two tubes arranged behind each other for plated and plating yarn, and a blocking member in the form of a mock yarn guide is provided beside the yarn guide proper and is movable into and out of a position where it engages the vertical inclined groove.

2. A single cylinder circular knitting machine as claimed in Claim 1, wherein when the yarn guide proper is in its operative position the tube for introducing plated yarn is located at a farther distance from the needles than the tube for introducing plating yarn and extends through the vertical inclined groove, its lower end being higher than the lower end of the tube for introducing plating yarn and situated in the horizontal opening.

3. A single cylinder circular knitting machine substantially as hereinbefore described with reference to the accompanying drawing.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **.

yarn P1 being laid by tube 41 and plating yarn P2 by tube 42. Tube 41 is arranged more apart from the needles 1 and its lower end is higher than the lower end of tube 42, which is situated nearer to needles 1. Beside guide 4 is provided a blocking member

5 in the form of a mock yarn guide, the operative end of which engages in its lower position a vertical inclined groove 21 in the latch guide 2 and closes it in such a manner as shown in Figs. 1 and 2. Further, a horizontal opening 22 is provided in latch guide 2 for the passage of introduced plated yarn Pt, said vertical inclined groove 21 opening into said opening 22.In the upper part of latch guide 2 are made shaped grooves 23 for the tubes of further, not represented guides of this feed and in the lower part below horizontal opening 22 the bridge 3 as already mentioned.

For the purpose of reciprocatory knitting of the heel or toe of a hosiery knitwork, needles 1 are distributed into operative and inoperative needles the latter of which pass at an elevated position. Guide 4 is displaced downwards into the lower operative position during movement of the needles 1 in the direction S, plated yarn P1 being lowered through the vertical inclined groove 21 and into horizontal opening 22, whereupon it is supported against the left edge of bridge 3 while being laid into needles 1, as can be seen from Figs. 1 and 3. Plating yarn P2 is also introduced in the usual manner into needles 1, and is supported also against the left edge of bridge 3.After laying plated yarn P1 and plating yarn P2 into needles 1, the blocking member 5 is also lowered into the lower position and closes the ver tical inclined groove 21.

The blocking member 5 has the purpose not to permit upon reciprocatory operation a possible closing of the latches of the in operative needles (not represented), which pass - at an elevated position, their latches otherwise being apt to be closed by the edge of vertical inclined groove 21, or pos sibly even broken during movement of the needles in the direction opposite to the direction 5 Plated yarn P1 and plating yarn P2 are drawn by needles 1, and upon transition into the direction of movement opposite to direction S the entrained yarns P1 and P2 move to the right side of bridge 3 again into the required sequence of grouping, as shown in Figs. 1 and 3, the plated yarn P1 moving across the horizontal opening 22 under the tube 42.In that manner, laying of both plated yarn P1 and plating yarn P2 is per fonned upon reciprocatory knitting, and in the dead centre, i.e. when needles 1 do not draw yarns P1 and P2, said yarns are drawn back by not represented tension trappers.

Upon finishing reciprocatory knitting, after the needle cylinder resumes rotary motion in the direction S, locking guide 5 is again lifted and plated yarn P1 is taken out from needles 1 through the vertical inclined groove 21, and both yarns are entrapped and cut by a known, not represented device on the dial.

In the case of a machine in which - reciprocatory knitting is performed in two feeds, the same plating means are located also in the second feed.

The main advantage of the present invention - consists in that by forming a vertical inclined groove and a horizontal opening by using a blocking member in the form of a mock yarn guide, the laying of plated ándvplating yarn guide, the laying of knitting machine is secured in a simple and reliable manner.

WHAT WE CLAIM IS:- 1. A single cylinder circular knitting machine for manufacturing hosiery goods and similar goods, wherein at a feed a latch guide is formed in its lower part as a bridge the upper part of the latch guide is interrupted by a vertical inclined groove which opens from above, and the upper part of the latch guide is separated from the bridge by a horizontal opening into which the vertical inclined groove opens from below, a yarn guide is provided with two tubes arranged behind each other for plated and plating yarn, and a blocking member in the form of a mock yarn guide is provided beside the yarn guide proper and is movable into and out of a position where it engages the vertical inclined groove.
2. A single cylinder circular knitting machine as claimed in Claim 1, wherein when the yarn guide proper is in its operative position the tube for introducing plated yarn is located at a farther distance from the needles than the tube for introducing plating yarn and extends through the vertical inclined groove, its lower end being higher than the lower end of the tube for introducing plating yarn and situated in the horizontal opening.
3. A single cylinder circular knitting machine substantially as hereinbefore described with reference to the accompanying drawing.