CS243722B1 - Device for linear fabrics4 insertion - Google Patents

Abstract

Devices to load linear features managing the problem of stretching these bodies difficult to access, especially for textile machines, consisting of of two, at least at their ends connected spring elements is according to the invention is arranged so that it is spring-loaded elements are created from parallel, flattened each other elastic straps.

Description

The present invention relates ^{to the} provision of linear linear formations, in particular threads of strips, to form internally inaccessible internal parts of machines.

Various tools and devices are widely used in the textile industry for introducing yarns and tapes into complicated and inaccessible internal parts of working machines, for example, dispensers, gauges, nozzles, yarn guides, strings, etc.

These are usually different types of threading needles, such as being made of a flexible band, usually of rectangular cross-section, which is provided at one or both ends with an open loop for catching the thread or tape to be introduced. Since the cross-sections of the hollow spaces into which the linear formation is guided are generally only slightly larger than the cross-section of the introducing needle, the open loop at the end of the needle must not exceed its contour.

However, this results in a marked weakening of the cross-section of the needle at the point of greatest stress and leads to rapid wear or even breakage of the needle at the point of the eye. In addition, as the needle is pulled through complex internal spaces, the open eyelet intercepts and sharpens transitions. Since the width of the needle-forming tape is not more than 3 to 4 mm, the technology of making the loop is also relatively complex and the manufacturing tools used are expensive.

Furthermore, two twisted wires are connected at their ends. This creates a kind of needle which must be twisted to form the desired slot for insertion of the linear formation, which requires both hands. When making such a needle, both ends must be carefully cleaned.

243 722

The above-mentioned drawbacks are eliminated by the device according to the invention, which is based on the fact that the spring elements are formed from parallel, mutually adjacent flat elastic strips.

According to the invention, the insertion device is designed as a closed longitudinal formation, does not have areas of weakened cross-section and does not catch during stretching. To control it, one hand is sufficient to insert the linear formation by the longitudinal or internal displacement of the strips between the thumb and forefinger.

Furthermore, a significantly different bending stiffness in the perpendicular planes of the cross-section of the needle is also advantageous for guiding such a needle and passing it through the threaded device. Furthermore, it is advantageous that the slot is closed by the elasticity of the flat elastic bands, so that the linear formation is adequately pressed and does not spontaneously undo.

1 shows an old embodiment of a threading needle; FIG. 2 shows a pair of elastic bands of rectangular cross-section connected at their ends; FIG. 3 shows a longitudinal formation according to the invention formed from an endless strip into a flattened shape; 2 of its longitudinal formation after its elastic deformation.

E.g. Fig. 4 a resilient or permanent deformation of the elastic bands χ 2 a force applied along e.g. 6 or 2 slot, which slot% ^ln P ^ replaces loop of FIG. 1 and allows it to readily grip, not shown feed linear formation. Since the slot 5 is limited by elastic strips 1, 2 connected at the ends 4, 4, it readily adapts to the shape and cross-section of the interior space through which the insertion device passes. Since the slot 2 is closed, the movement of the elastic bands 1, 2 in a narrow cross-section is not caught or otherwise restricted. Moreover, the elastic strips 1, 2 are not weakened adversely at the point of greatest stress, i.e. at the tip, but are strengthened by their connection. Also, locking and holding naváděného linear formation in the narrow end of the slot 2 P satisfying ^{the linseed.}

Claims (1)

SUBJECT OF THE INVENTION 243 722 Apparatus for introducing linear formations, in particular yarns and strips, into intricately complicated and inaccessible internal parts of working machines, in particular for dispensers of gauges, nozzles, conductors and healds, and comprising at least two spring elements connected at both ends, characterized in that the elements are formed from parallel flat elastic strips lying adjacent to one another.