JPH0643194Y2 - Needle hook for reed device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to an improvement of a needle hook used when a warp is drawn through a gap between reeds in one of the steps of preparing a woven cloth and a woven net.

(B) Conventional technology As a preparatory step for weaving work using a metal wire or a single plastic wire as a warp thread, there is a reed threading operation in which the warp thread is drawn into the gap between the reed blades. In such repulsion work, conventionally, the fifth
Using a needle hook a having a shape as shown in the drawing, the warp 1 was hooked in the hooking groove b and passed as shown in FIG.

However, in the reed threading work using such a conventional needle hook, the hooking groove b formed in the needle hook a penetrates in the thickness direction of the needle hook a and opens at the upper or lower edge. The warp yarns 1 hung in the hooking grooves b are arranged in a plane (a plane parallel to the paper surface in FIG. 6) substantially perpendicular to the extending direction of the reed f (the direction perpendicular to the paper surface in FIG. 6). It is guided into the gap g between the reeds f. Moreover, when the warp is made of metal plastic, it has a relatively high rigidity, unlike the warp of ordinary fiber for clothing, so that the warp can be pulled through while the reeds are forcibly opened. Therefore, there is a problem in that the warp is cut by the edge of the reed wing, or the pulling force of the needle hook is significantly increased. Moreover, this work is difficult to automate, and there are still many parts to be done manually, which requires skill and physical strength, and the work efficiency is low.

(C) Problem to be solved by the invention The problem to be solved by the invention is to make the hooking groove of the warp thread penetrate through the needle hook in the width direction of the needle hook and open it on one side surface of the needle hook. The purpose of the present invention is to prevent the warp yarns from being cut and facilitate the pulling operation by allowing the warp yarns to be arranged in a plane substantially parallel to the face of the reed wing when the warp yarns are passed through the gaps between the reeds.

(D) Means for Solving the Problems The present invention is a needle hook for a reed threading device that is inserted between reed blades and passes a thread between the reed blades. The needle hooks are vertically arranged substantially parallel to the side surface facing the reed blades. A penetrating hook groove and an inlet opening from the end of the hook groove to one of the side surfaces are formed in the needle hook, and an end wall of the hook groove is formed in an arcuate curved surface. The introduction port is configured to be inclined with respect to the axis of the needle hook.

(E) Action In the above-mentioned structure, the warp thread is passed through the gap of the reed wing by the needle hook while being passed through the pull-in groove of the needle hook. At this time, since the warp threads are passed in a state of being arranged in a plane substantially parallel to the surface of the reed wing, the warp threads are not cut by hitting the edge of the reed wing.

Further, even if the warp yarns jump out to the side surface side of the needle hook through the introduction port, the warp yarns are naturally pushed into the hooking grooves with the movement of the needle hooks, and the warp yarn threading does not fail.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

A top view of the needle hook 1 according to the present embodiment is shown in FIG. 1 and a side view of the needle hook is shown in FIG. The needle hook 1 is formed of an elongated plate-like body having a thickness t and a width h slightly smaller than the interval between adjacent reed blades. Near the tip 2 of the needle hook 1, there is formed a hooking groove 5 which vertically penetrates in parallel with two side surfaces 3 facing the reed f. That is, the hook groove 5 penetrates the upper and lower edges 4. The hook groove 5 has a rear portion (on the side opposite to the tip end) which is opened to one side surface (lower side surface in FIG. 1) of the needle hook via the introduction port 6. As shown in FIG. 2, the introduction port 6 is inclined at a predetermined angle θ with respect to a line YY perpendicular to the axis line XX of the needle hook when viewed in the width direction. The angle θ is determined by the width w of the reed wing f, the width h of the needle hook, and the distance D. The introduction port 6 is defined by the inclined surface 7 so that the warp 1 can be smoothly guided from the introduction port 6 to the hooking groove.

The end wall 8 on the front end side of the hook groove 5 has a projecting shape such that the center portion of the radius of curvature γ projects into the hook groove.

The side edge of the inlet port 6 on the tip side of the needle hook, which is the upper edge 4 side in FIG. 2, and the side edge of the inlet port 6 on the rear end side of the needle hook, which is the lower edge 4 side in FIG. The distance D as seen in the longitudinal direction of the needle hook from the portion 11 of the
In this case, D ≦ 1 / 4w is preferable.

The reason why the introduction port 6 is slanted is that the width thereof is widened so that the warp can be taken in easily and the needle hook is not hooked on the reed wing by the introduction port.

When reeding is performed using the needle hook 1 having the above-mentioned configuration, as shown in FIGS. 1, 2, and 4, the reed f
The tip of the needle hook 1 is projected toward one end of the reed through the gap g between them. In this state, the warp yarn 1 is put into the hooking groove 5 through the inlet 6, and the warp yarn 1 is hooked as shown in FIGS. 1 and 2. After that, the needle hook is moved in the direction of arrow U in FIG. 3 to pass the warp 1 through the gap g between the reeds f. At this time, as is apparent from FIGS. 1 and 2, the warp yarns 1 are arranged in a plane substantially parallel to the surface of the reed blade f and between two adjacent reed blades f, so that the reed It is passed through the gap g without hitting the edge of the wing f. Therefore, it is not necessary to forcibly spread the reed wing f with the warp as in the conventional case, and the warp is not cut by the reed.

Further, as shown in FIG. 3 [A], the side edge portion 10 of the inlet port 6 formed in the needle hook in the process of moving the needle hook 1 in the direction of the arrow U causes the front edge of the reed blade (see FIG. ]
Even when the upper part of the inlet port 6 is closed by the reeds when the position of the right edge of the needle hook is reached, the lower part of the inlet port 6 is open at the lower edge side of the needle hook. For this reason, as shown in FIG. 3B, even if the warp 1 is protruding from the central portion of the inlet port 6 to the side surface 3 side of the needle hook 1, if the needle hook moves in the direction of arrow U, it will also protrude. The existing warp yarn is automatically guided into the hooking groove 5 by the inclination of the introduction port 6, and the warp yarn does not come off from the needle hook. Moreover, the warp is not caught between the needle hook and the reed f.

Further, when the needle hook portion 11 comes to the position of the front edge of the reed f, the needle hook is guided by the side surface 3 in parallel with the reed f, so that the edge portion of the needle hook introduction port 6 has the reed f Does not get caught on the front edge of the.

(G) Effect According to the present invention, the following effects can be achieved.

Even a relatively rigid warp such as a plastic single wire or a metal wire can be easily passed between the reeds.

Since there is almost no contact of the warp with the reed wing, it is not necessary to cut the warp or forcibly expand the gap between the reeds.

It requires less force to pull the warp thread (1 / 8th place).

The reed can be automated.

[Brief description of drawings]

1 is a top view of the tip portion of the needle hook according to the present invention, FIG. 2 is a side view of the needle hook of FIG. 1, FIG. 3 is an operation explanatory view of the needle hook of FIG. 1, and FIG. 1
FIG. 5 is a perspective view showing a state in which the needle funk shown in the figure is passed between the reeds, and FIG. 5 is a side view of the tip portion of the conventional needle hook.
FIG. 6 is a side view of the tip portion of the needle hook of FIG. 1 ... Needle hook, 2 ... Tip 3 ... Side surface, 4 ... Top and bottom edge 5 ... Hook groove, 6 ... Inlet port.

Claims (1)

[Scope of utility model registration request] 1. A needle hook for a reed threading device, which is inserted between reed blades and passes a thread between the reed blades, wherein a hooking groove that vertically penetrates substantially parallel to a side surface facing the reed blades, and a hook groove. An inlet opening from the end of the hanging groove to one of the side surfaces is formed in the needle hook, an end wall of the hanging groove is formed in an arcuate curved surface, and the inlet is related to the axis of the needle hook. A needle hook for a reed threading device, which is tilted at an angle.