CS211547B1 - Guiding path of the vice clamp - Google Patents

Description

This then causes the weft to bend over the edge needle of the guide system. This bending of the weft considerably influences the increase in the stress peaks in the weft material, which is particularly disadvantageous in particular for less rigid materials. '' ’

Last but not least, it is necessary to point out certain problems which, in this embodiment of the guide track, are caused by the necessity of its hiding while moving under the forming fabric. These problems can be solved, for example, by moving the guide track perpendicular to the warp or by moving the medicament backing at the fabric to be formed, ideally by selecting the appropriate bidlen swing geometry.

The first method is relatively complicated and causes quite considerable construction problems, the second method is relatively disadvantageous when it comes to the meeting of the silk assortment by its effect on the fabric character and the negative effect of the expansion function. Another disadvantage of the present embodiments is the considerable clogging of the spokes during the weaving of the sizing materials and thus a substantial increase in the warp tear.

The object of the present invention is to eliminate some or all of the disadvantages of the previous embodiments.

The principle of the invention consists in that it consists of a set of needles whose ends extend into a longitudinal groove provided on the gripper.

It is advantageous to design a guide track in which the ends of the needles of the assembly are at least part extending into the groove of the gripper bent towards the beam, whereby their easier positioning is achieved on existing baffles.

A preferred embodiment of the guide track is also one in which the needles of the needle assembly are straight and inclined to the beam cane.

Other advantages and features of the present invention are apparent from the following description of an exemplary embodiment, shown schematically in the drawing, where:

"giant. 1 is a perspective view of the gripper and the guide;

Fig. 2 the shape of the curved needle, Fig. 3 the shape of a straight needle, Fig. 4 schematic view of the progression pattern during passing of the gripper - guiding needle curved, Fig. 5 schematic view of the shedding pattern j) or passing of the gripper - straight guiding needle

The gripper g, which is preferably made of plastic or composite materials, has a trapezoidal cross-section as shown in FIGS. 4, 5. The solution is not limited to this shape, but triangular or combined shapes can also be used. to approximate the shape of the shed pattern.

On the lateral sides it is provided with grooves 2 in the cross-section of the grip g inclined obliquely to the axis of symmetry g. For weaving machines with a one-sided picking device, the gripper g can be provided with only one groove 2. The length of the grooves 2 is approximately equal to the length of the dorsal part g of the gripper g, whose front surface. 11 serves to strike the shock absorber (not shown) and the rear surface 12 for contacting the accelerator member 10 of a firing mechanism not shown in greater detail.

in

The gripper g is guided by a base surface g on the guiding side of the cane 6 of the beam g in a conventional manner supported on the biden 13 of the weaving machine and a set of needles 8 also supported on the bidlen gg. The needles 8 of the weighted needle assembly are attached to the weave 13 of the weaving machine in a conventional manner, for example by casting, so as to form a guide track that guides the gripper 8 as it passes through the shed. The end 8 of each needle 8, as shown in FIGS. 2 and 3, is preferably rounded, which has a favorable effect on the grip guide 8 and the warp thread distribution function. The length of each of the needles 8 is such that the gripper 8 is guided approximately halfway through the shed height. The needles 8 of the needle assembly may be straight, then are disposed obliquely to the spoke, see Figs. 3 and 5, or only their ends 8 are bent toward the spoke, as shown in Figs. circular or oval because it is most advantageous in terms of action on the warp threads.

The function of the described device is as follows:

The gripper 60 is either fired on either or only one side of the loom by the accelerator member 60 of the picking device. Here, the gripper 4 is guided to a guide track which is formed by the guide side 6 of the beams 6 and the set of needles 8. These needles 8 are aligned in a transverse view of the shed so that their ends 4 each below the axis of symmetry. closest to the center of gravity. The fact that the needles 8 of the needle assembly are very simple in shape and their guide part is below the symmetry axis 8 of the clamp 5 prevents a very gentle action on the warp material to be encountered. The aforementioned fact that the weft thread is not bent during the movement of the baffle 13 through the set of needles 8 also causes a substantial reduction in the peak weft stresses.

Claims (5)

A gripper guide track disposed on a loom of a weaving machine, comprising a cane beam and a set of needles, characterized in that the ends of the needles (8) extend into a longitudinal groove provided on the gripper (1). 2. The gripper guide track of claim 1 wherein the needle ends (8) of the needle assembly are bent toward the spoke at least by a portion extending into the gripper groove. 3. The gripper guideway of claim 1 wherein the needles (8) of the needle assembly are straight and inclined to the cane of the beam (7). The gripper guide track according to claim 2 or 3, characterized in that the cross-section of the needles (8) of the needle assembly is circular. The gripper guide track according to claim 2 or 3, characterized in that the cross-section of the needles (8) of the needle assembly is oval.