JPS602215Y2 - shuttle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a shirttle for a loom, particularly a shirttle of a type in which the weft is supplied via a weft inductor sliding in the longitudinal direction of the shirttle.

A shirttle with an inductor usually has 3 to 4 weft inductors (hereinafter simply referred to as inductors), and each inductor runs in its own independent inductor sliding groove under the tension of an elastic string in one direction. It is possible to ski under the condition that

The elastic string is stretched between a point on the other side of the shirttle body and the inductor via a pulley fixed to one half of the shirttle body, and applies a force proportional to the amount of stretch to the inductor. affect

The directions of the above forces are alternately directed in opposite directions depending on the order in which the inductors are arranged in the inductor sliding space (a part of which is an inductor sliding groove) provided on the side wall where the weft lead-out portion of the shirttle main body opens. It is.

The weft yarn coming out of the weft yarn guide-out section sequentially passes through the guiding holes of the inductor, from the inner inductor to the outer inductor, and then leaves the shuttlecock.

If the wall surface of the inductor hole of the inductor is made of a material with a low coefficient of friction, the above-mentioned inductor in the inductor shuttle will essentially function as a movable pulley, and when the shuttle is used, the elastic string will stretch. The force based on is transmitted to the weft thread through the inductor, creating tension in the weft thread.

In the present invention, the pulley for hanging the elastic cord in the induction shirttle as described above is installed as close to one end of the shirttle body as possible to fix it on the shirttle body, so that the elastic cord is made as long as possible, and at the same time, the pulley for hanging the elastic cord on the induction shirttle The elastic string is made as long as possible to extend to the opening of the weft lead-out portion of the shirttle main body, which makes the elastic string much longer than the conventional one.

To explain this with reference to a specific example, three pulleys 1a, lb, and lc are attached to the end of the shuttlecock body 4, as is clear from FIG. 1 (plan view) and FIG. 2 (front view). This brings the inductor 5b closer to the limit point.
The sliding groove 7 of the pulley 1b (attached to the elastic string 6b hung on the pulley 1b) is made into a long groove whose right end extends to the opening 8 of the weft outlet (the conventional one has all the pulleys attached). The installation position, and thus the right end of the inductor sliding groove, was on the left side of the weft lead-out section frontage section 8.

). In the figure, 60 is an elastic cord attached to another inductor 5C, and 6a is an elastic cord attached to yet another inductor (not shown).

Reference numerals 9a, 9b, and 9c are the fixing points of each elastic cord on the shirttle body 4, and it is desirable to make the elastic cords as long as possible by arranging these as close to the ends of the shirttle body as possible.

FIG. 3 is a plan view showing another embodiment of the present invention.

This example has almost the same structure as the previous example, except that it has a fourth inductor 5d (not shown), an elastic cord 6d and a pulley 1d for this inductor, and the symbols in the figure are , has the same meaning as the same symbol without a dash in FIG.

Since the shirt toll of the present invention has the above-described configuration, the elastic string is inevitably longer than that of the conventional induction shirt tortle.

Therefore, even immediately after the shirttle is launched when excessive tension is likely to be applied to the weft yarn supplied from the shirttle, the elastic string can initially stretch with extremely low stress, so the inductor slides very lightly and smoothly moves the low-tension weft yarn. send out.

Therefore, the tension fluctuation of the weft yarn is small, and the weft yarn is not taut or holes are formed in the woven fabric.

Additionally, because the inductor has a wide sliding range, it also has the advantage of being able to weave patterns to both ends of the fabric width.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a front view of the shuttlecock shown in the figure, and FIG. 3 is a plan view showing another embodiment of the present invention. 1... Pulley, 4... Shuttle body,
5... Inductor, 6... Elastic cord, 7...
... Inductor sliding groove, 8 ... Weft lead-out opening, 9 ... Elastic cord fixing point.

Claims (1)

[Scope of utility model registration request] An inductor sliding groove extending in the length direction of the shirttle, a weft inductor that can slide in the inductor sliding groove, and a pulley fixed to one half of the shirttle main body are passed through, and the weft thread inductor is connected to another point on the shirttle main body. In a shirttle having an elastic cord stretched between the inductor sliding groove, the weft inductor,
positioning the elastic cord between the bobbin support member including the bobbin insertion hole of the shirttle main body and the side surface of the shirttle main body,
The shirttle is characterized in that the pulley is installed close to one end of the shirttle main body, and one end of the inductor sliding groove extends to the weft lead-out portion of the shirttle main body.