FR2485049A1 - DEVICE FOR HOLDING A KNITTED TENSION IN CIRCULAR KNITTING FABRICS, ESPECIALLY CIRCULAR FABRICS OF LARGE DIMENSIONS - Google Patents

Abstract

TWO 6 ELBOW SPACERS TO FORM PREFERABLY HALF OF A HEXAGON OR OF AN OCTAGON, ARE FIXED, ADJUSTABLY, BY MEANS OF SET SCREWS 4, 7 ON A SUPPORT ELEMENT 1 AND A PLATE FIXING 3 WHILE EXTENDING PARALLEL TO THE WINDING ASSEMBLIES 2, AND TWO TRANSFER ELEMENTS 11 ARE MOUNTED ADJUSTABLY ON THE SUPPORT ELEMENT 1 AND ON A SUPPORT ELEMENT.

Description

1 2485049

The present invention relates to a device for keeping the knitted fabric stretched in knitting looms

circular, especially circular trades of size

important sions comprising spacers, arranged on a support element, and transfer elements.

We already know by the Hungarian review "Textîl-

  technik ", no 5/67, pages 218 to 225, a tensioning device

  in which the spacers are arranged parallel

  along with the winding beams.

The disadvantage of this known tensioning device

  side in the fact that the spacers form a

  square whose angles are located parallel to the undersides

ples of winding, which has the effect that the angles of the square exert an influence on the knitting on the side where it is the most taut. Therefore, deformations

  occur at the rows of meshes which can pro-

  talk about snags and holes in the knit.

In another embodiment, known by the

patent DE 1 228 021 and in which the spreading members

  are arranged transversely to the undersides

  winding ples, the spacers carry, by means of a support, transfer elements

adjustable length.

  This solution has the drawback that the

  transfer elements are responsible for guiding the knit only below the spacing members so that correct guiding of the knit to the winding beams is not always guaranteed. Since needle ruptures occur on the periphery of the needle cylinder as a result of a non-uniform load of all the needles, the speed of rotation can only be increased under certain conditions and this known device cannot be used for circular knitting machines of large dimensions and having a large number of systems for the production of very fine knitwear.

2 2485049

  The purpose of the present invention is to reduce the breakage of the needle heads, to increase the speed of rotation and the quality of the knitted fabrics by reducing the deformation of the threads and this in particular for circular knitting machines of large dimensions, d 'a

  high number of systems and great finesse.

The object of the present invention is to create a

  tensioning device which, when transporting the knitted fabric from

firing from a circular section towards a flat surface, ensures a constant tensile tension thanks to a coarse adjustment of the spacers and a precise adjustment, preferably automatic, of the transfer elements to

within a wide adjustment range.

The above problems are solved in accordance with the invention by a tensioning device which is characterized in that two angled spacers to form, preferably, half of a hexagon or an octagon, are fixed, adjustable, by means of clamping screws on a support element and a fixing plate while extending parallel to the winding beams, and in that two transfer elements are mounted, in an adjustable manner, on the element support and on a support element. The constant tension of the knitted fabric is obtained with the tensioning device because the upper ends of the transfer elements are arranged at a higher level or at the same level as the

  plane on which the spacers are located.

  According to a variant of the invention, the precise adjustment of the transfer elements is obtained from the fact that the transfer elements have bores in which, as well as in the bores of the forks of

rods, are arranged axes of articulation.

  It is possible to carry out an automatic adjustment of the transfer elements by providing at their upper and lower ends holes in which is

hung at least one spring. According to one of the characteristics

  ticks of the invention the transfer elements have

3 2485049

  a uniform thickness, or their thickness decreases

gradually from top to bottom.

The invention thus creates a device for keeping a knitted fabric stretched which allows a rough adjustment of the sliding guide between the tensioning device and the knitted fabric by means of the spacers and a precise adjustment, preferably automatic, by rotation of the transfer elements. by means of one or more springs, in a

wide adjustment range.

  By mounting the transfer elements at the same level or at a level which is higher than that of the mounting of the spacers, a load is also obtained.

  uniform for all tabs on the needles

  on the circumference of the needle cylinder which reduces the number of needle breaks and the

deformation of the rows of meshes. It is also possible

  ble to increase the number of rotations as a result of the decrease in tensile tension for the entire width of the knitted fabric and, as a result, the tensioning device can be

used for circular knitting looms of dimension

  important and presenting a large number of systems

mes and great finesse.

  Various other features of the invention

moreover emerge from the detailed description which follows.

  An embodiment of the object of the invention is shown, by way of nonlimiting example, in the accompanying drawing.

  Fig. 1 shows in perspective the ten-

deur and spacing according to the invention.

  Fig. 2 is a section along line A-A of the

fig. 1.

  The support element 1 is fixed on the axis of a device.

  as ribbed not shown. The winding beams 2 are located below the support element 1. The fixing plate 3 is connected to the support element 1 by means

of clamping screw 4 and can thus be adjusted in height.

The spacers 6 are immobilized in the plate

4 2485049

  fixing 3 by clamping screws 7 and by means of

  diary of bent rods 5. Thanks to the bent rods 5 the

  spacers 6 can be easily replaced.

  The clamping screws 7 allow a width adjustment. The rods 9 are immobilized in an adjustable manner in the support 8 by means of clamping screws 10. The transfer elements 11, the upper ends of which are at the same level or at a higher level than the mounting plane of the members of 'spacing 6, are carried by the rods 9 which have a fork 12 and a bore 13. According to a variant of the invention the fork 12 can be fixedly connected to the transfer elements 11 by means of a screw

  and a lock nut 14. In the case where this is preferred

  rigid frame, the rods 9 are fixedly connected to the transfer elements and the fork 12 can be dispensed with. In the case of elastic mounting allowing automatic adjustment, a hinge pin 14 is used which ensures mobility and pendulum movement free from the elements

transfer 11.

In order to obtain a wide adjustment range,

  sees additional holes 15 in transfer elements 11 and the support 8 is fixed in an adjustable manner in height, by means of tightening screws 16, on the element of

  support 1. At the upper end of the trans-

  fert 11 there are also provided holes 17 for hooking a spring 18 and a tensioning element 19. To obtain

  automatic adjustment based on elastic traction

  that a spring 18 'and a tensioning element 191 are hooked

  in holes 20 at the bottom of the elements

transfer 11.

  When using the tensioning device according to the first embodiment, the rods 5 are adjusted by means of the clamping screws 7 as a function of the tensile tension which it is desired to obtain for knitting. The height adjustment of the spacers 6 is carried out by moving, using the clamping screw 4, the fixing plate 3 by

  relative to the support element 1.

2485049

In this embodiment, the transfer elements 11 are connected directly to the rods 9 and their

  adjustment is made using clamping screws 10.

  In the second embodiment of the ten-

  hinge pins 14 are mounted in the bores

  wise 13 to allow the transfer elements 11 of ef-

pendulum movements. In order to obtain an automatic adjustment as a function of elastic traction, springs 18, 18 'and tensioning elements 19, 19' are

hung in the holes 17, 20 provided at the ends

upper and / or lower transfer elements 11.

6 2485049

Claims (5)

  1 - Device for keeping the knitted fabric stretched in circular knitting looms, in particular looms large circulars with orga- spacers, arranged on a support element, and transfer elements, characterized in that two or- spacers (6) bent to form, preferably, half of a hexagon or an octagon, are fixed, in an adjustable manner, by means of clamping screws (4, 7) on a support element ( 1) and a fixing plate (3) while extending parallel to the winding beams (2), and in that two transfer elements (11) are mounted, in an adjustable manner, on the support element ( l) and on a support element (8).   2 - Device according to claim 1, character- risé in that the upper ends of the transfer elements (11) are arranged at a higher level or at the same level as the plane on which the organs are located spacer (6). 3 - Device according to one of claims 1   and 2, characterized in that the transfer elements (11) have bores (15) in which, as in the bores (13) of the forks (12) of the rods (9), are arranged on the hinge pins (14). 4 - Device according to claim 3, character-   risé in that the transfer elements (11) have, in their upper and lower ends, holes (17, 20) in which is hung at least one spring (18, 181).   5 - Device according to one of claims 1 to   4, characterized in that the transfer elements (11) have a uniform thickness or a thickness which gradually naked from top to bottom.