ES1057434U - Device for positioning thread in circular knitting machines. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Device for the positioning of threads in circular knitting machines, comprising a plurality of thread guide rings comprising a series of holes for the passage of the threads, which are guided to the hooks of needles provided in said circular knitting machine which perform a vertical movement, characterized in that said holes in the wire guide rings are located vertically and face the hooks of said needles when they are in their upper position. (Machine-translation by Google Translate, not legally binding)

Description

Device for the positioning of threads in Circular knitting machines.

The present invention relates to a device for the positioning of threads in knitting machines Circular

Background of the invention

In the warp process known and used in Today, the needles of a circular knitting machine make a vertical movement up and down. In the sequence of this movement in which the needles are in their maximum rise position it is necessary to place the wires at least one per needle, inside the hook of the same so that, when the needle lowering movement is performed, it can be form a new row of meshes.

The repetition of this sequence of movements of rise and fall of the needles, along with the positioning of the threads inside the hook of the same forms the tissue.

At present, the positioning of said threads are made using guide wires threads that usually are arranged horizontally above the needles and at a some distance from them.

Up to three wire guide rings can be placed concentrically with respect to the vertical axis of said rings. The disadvantage presented by this arrangement is that the holes of the thread guide rings are far from the needle hooks in which should be placed the threads and, therefore, it is difficult place them correctly inside these hooks. This causes the weaving process to be more critical and that they can more defects appear in the tissue in case the landscape conditions (thread tension, thickness thereof, positioning, etc.)

Description of the invention

With the positioning device of the invention manages to solve the aforementioned drawbacks, presenting other advantages that will be described.

The device for thread positioning in circular knitting machines of the present invention comprises a plurality of wire guide rings comprising a series of holes for the passage of the threads, which are guided to the hooks of needles provided in said machine circular knitting machine that performs a vertical movement, and it characterized by the fact that said holes in the guide rings threads are located vertically and facing the hooks of said needles when they are in their upper position.

Advantageously, each wire guide ring comprises a vertical section, in which said holes are arranged.

Preferably, the vertical sections of said wire guide rings are aligned with each other.

Also advantageously, the sum of the number of holes of all wire guide rings is equal to or greater than number of needles of the circular knitting machine.

Preferably, the device comprises three guide rings concentrically located threads, the outer rings being and internal rotating and fixed intermediate ring.

With the device of the present invention it is possible to easily guide the appropriate number of threads to the hooks of the needles, with a minimum distance between the hooks and the holes of the wire guide rings.

Brief description of the drawings

For a better understanding of how much has been exposed Some drawings are accompanied in which, schematically and only to non-limiting example title, a case study of realization.

Figure 1 is a schematic elevational view of a first embodiment of the positioning device of the present invention; Y

Figure 2 is a schematic elevation view of a second embodiment of the positioning device of the present invention

Description of a preferred embodiment

As can be seen in Figure 1, the positioning device of the present invention comprises a first upper thread guide ring 1 with a series of holes 2, As many as needles 3 have the circular knitting machine.

Through said holes 2 passes a first group of threads 4 that will be located inside the hook 5 of the needles to form the tissue 6.

In a slightly lower position, a second wire guide ring 7 with a series of holes 8, as many as needles 3 have the circular knitting machine.

A second passes through said holes 8 group of threads 9, which are also located inside the hook 5 of the needles when they are in the upper position, in this case to form meshes, or behind the needles 3 when they are in their lower position to be inserted in the fabric in the form of wefts.

As can be seen in the figure, the holes 2, 8 are located facing the hooks 5 said needles and are arranged vertically in a vertical section of said rings 1, 7, whose vertical sections are preferably aligned between yes.

The number of threads arranged in each guide ring threads 1, 7 may vary, but the sum of the threads of the upper ring 1 and those of the lower ring 7 always have to be equal or higher to the number of needles 3 of the machine.

The wire guide rings 1, 7 have a movement circulate around the theoretical center that would be the axis longitudinal 10 of the positioning device, which coincides with the vertical axis that passes through the center of the crown of needles This circular movement is conferred independently to each of the wire guide rings 1, 7 by any means adequate of those currently used, such as cams, stepper motors, etc.

In a second embodiment represented in the Figure 2 has added a third wire guide ring 11.

This third wire guide ring 11 also comprises of a series of holes 12, as many as needles 3 have the machine, and is located between the two rings 1, 7 described above in relation to figure 1.

Unlike these two rings 1, 7, the position of third ring 11 is fixed, without rotation movement, coinciding each hole 12 with the center point between two needles 3.

In this way, in addition to the possibilities described in the previous embodiment, it is possible to insert a third group of threads 13 arranged vertically inside the tissue and parallel to the longitudinal axis 10.

Although reference has been made to a concrete embodiment of the invention, is evident to an expert in the matter that the positioning device described is susceptible of numerous variations and modifications, and that all the mentioned details can be replaced by others technically equivalent, without departing from the scope of protection defined by the appended claims.

Claims (5)

1. Device for positioning threads in circular knitting machines, comprising a plurality of wire guiding rings comprising a series of holes for the passage of the threads, which are guided to the hooks of needles provided in said circular knitting machine which perform a vertical movement, characterized by the fact that said holes in the wire guide rings are located vertically and face the hooks of said needles when they are in their upper position. 2. Device according to claim 1, characterized in that each wire guide ring comprises a vertical section, in which said holes are arranged. 3. Device according to claim 2, characterized in that the vertical sections of said wire guide rings are aligned with each other. Device according to claim 1, characterized in that the sum of the number of holes of all the wire guide rings is equal to or greater than the number of needles of the circular knitting machine. 5. Device according to claim 1, characterized in that it comprises three concentric wire guide rings, the outer and inner rings being rotatable and the intermediate ring fixed.