JP2724587B2 - Osa feather for air jet loom and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a feather wing for an air jet loom and a method of manufacturing the same.

<Conventional technology> The wing 1 of the air jet loom has a recess 3 on the cloth fell side.
The weft yarn 4 sent out by the air jet of the main nozzle flies through a groove-shaped air guide 5 formed by the above-mentioned recesses of the juxtaposed feather wings.
Since this air guide is provided to prevent the diffusion of the air jet and stably fly the weft,
It is considered that the end surfaces of the peripheral edges 6a, 7a, 8a of the recesses forming the wall surface of the air guide are preferably inclined surfaces inclined in the direction in which the air jet is narrowed. , 11
As shown in the figure, the end face 6a of the upper jaw edge 6, the end face 7a of the bottom edge 7, and the end face 8a of the lower jaw edge 8 around the recess 3 are all inclined surfaces inclined in the direction of reducing the air jet.

However, even if such an air guide 5 is provided, a decrease in the weft conveying force due to a decrease in the flow rate of the air jet cannot be avoided. Therefore, in order to assist this, the weft is moved slightly obliquely upward from the cloth fell into the air guide. Sub nozzle that injects air
Usually 14 (FIGS. 8 and 9) are provided.

In addition, the conventional wings are manufactured by cutting into a predetermined shape by press punching and then assembling the wings to shape the wall surface of the air guide, and the periphery of the recess 3 of the wings forming the air guide is adopted. In order to form the end surfaces 6a, 7a, 8a into predetermined inclined surfaces, a method of shaping the end surface of the peripheral edge of the recess by punching after press punching, or forming a slope under cutting conditions at the time of press punching is adopted.

《Problems to be solved by the invention》 However, in the conventional Osa, when the weft conveying force is increased by strengthening the jet of the main nozzle and the sub-nozzle, the flight of the weft is disturbed, and the weft during the flight is air guide There was a problem that it was easy to fly outside. The present invention has been made to solve this problem, and an object of the present invention is to provide a wing for an air jet loom that can stably fly a weft.

<< Means for Solving the Problems >> Accordingly, in the present invention, the end face 6a of the upper jaw edge 6 of the recess 3 provided in the oscillating wing 1 is a surface in the direction of restricting the air flow, and the end face 7a of the bottom edge 7 is used for the air flow. The above problem is solved by making the surface in the direction of diffusion.

And the manufacturing method of the Osa feather of the present invention shall shape the end surfaces 6a and 7a of the recess of the Osa feather by grinding.
In the grinding process, a thin plate cut into a predetermined shape by press punching or the like is inclined around a first axis 12 perpendicular to the axis of the grinding wheel 11, and a second axis 13 parallel to the axis is further provided if necessary.
This is to grind the end faces 7a and 8a of the recess 3 while simultaneously inclining the periphery.

<Operation> In the air guide formed by the conventional wings, the end surfaces 6a, 7a, 8a of the peripheral edges of the recesses of the wings are all inclined in the direction of narrowing the air jet. The air flows from three directions deflected toward the center line collide with each other to cause turbulence, and the air flow deflected by the inclined surface 7a of the bottom edge 7 goes to the opening side of the air guide 5, so that the weft during flight 4 acted so as to protrude from the air guide 5. In particular, the jet from the sub-nozzle goes round toward the bottom edge 7 while deflecting downward along the inclined surface of the upper jaw edge 6 of the air guide as shown in FIG. The air flow deflected to the cloth fell side by 7a strongly acted in the direction in which the weft yarn 4 was ejected.

On the other hand, in the air guide formed by the wings of the present invention, the end face 7a of the bottom edge 7 of each wing serves to release air from the slit 9 between the wings to the back side of the wing. A strong air flow deflected toward the cloth fell is not generated in the air flow passing through the air guide 5, the collision of the air flow in the air guide 5 is reduced, and the turbulence of the air is reduced. 4 can stably fly without jumping out of the air guide 5.

In addition, in the conventional method of manufacturing a feather wing, the end face 6
Although it was difficult to accurately shape a, 7a, and 8a without variation, according to the above-described manufacturing method, it is possible to process the end surface of the peripheral edge of the recess of the Osa feather into an accurate surface as designed. It is possible to prevent the occurrence of air turbulence due to errors and variations in the shape of the end face of the recess, and to change the end face from the face in the drawing direction to the face in the diffusion direction at the part transitioning from the upper jaw to the bottom of the recess. It is possible to obtain an ideal shape of smooth transition, and it is possible to obtain a wing that does not cause more turbulence in the air in the air guide. Further, according to the manufacturing method of the third aspect, it is possible to simultaneously process the end faces of the upper jaw edge and the end face of the bottom edge of a large number of feather wings in one step.

<< Embodiment >> FIGS. 1 to 4 are views showing an embodiment of a batting provided with a batting wing of the present invention. FIG. 1 is a side view of the batting, and FIG.
The figure is a partial front view of the Osa, FIG. 3 is an enlarged sectional view of a portion A in FIG. 1, and FIG. 4 is an enlarged sectional view of a B portion.

The ossa feather 1 has a recess 3 on the cloth fell side 2 thereof, and an air guide 5 for guiding the weft 4 is formed by the recesses 3... Of the ossa feathers 1. The recess 3 is substantially U-shaped, and has an end face 6a of the upper jaw edge 6, an end face 7a of the bottom edge 7, and an end face 8a of the lower jaw edge 8.
Is a surface that is inclined with respect to the direction in which the airflow X passes, as shown in FIGS. The inclination direction of the surface is such that the end surface 6a of the upper jaw edge 6 and the end surface 8a of the lower jaw surface 8 are in a direction (positive taper) in which the downstream side of the airflow X becomes higher toward the center line side of the air guide. The end face 7a has a direction in which the downstream side of the airflow X becomes lower away from the center line of the air guide 5 (reverse taper).
It is. The inclination angles α, β, γ of these end faces 6a, 7a, 8a
Is, for example, 3 degrees to 5 degrees, but this angle also changes depending on the interval between the slits 9 between the wings. When the gap between the slits 9 is large, the end surface 7a of the bottom edge does not need to have an inverse taper. It is also possible to direct the air flow in the direction in which it diffuses. On the other hand, in order to guide the air flow X (see FIG. 9) from the sub-nozzle 14 in a direction along the air guide 5, the end face 6a of the upper jaw edge has a degree of inclination of a positive taper as the gap of the slit 9 becomes larger. Need to be larger,
It always has a positive taper. Generally, the end face 8a of the lower jaw edge is preferably tapered in order to prevent the flying weft 4 from being deflected downward due to gravity.

5 to 7 are views showing one embodiment of the method of manufacturing the wings of the present invention, in which a large number of wings 1... Cut into a predetermined shape by press punching are stacked and fixed. Then, a state in which the edges 6a and 7a of the recess 3 are ground by the grinding wheel 11 is shown. The oscillating wings 1... Are inclined at an angle α of the end face of the upper jaw edge around a first axis 12 orthogonal to the axis Y of the grinding wheel 11.
Tilted counterclockwise when viewed from the grinding wheel side by an angle corresponding to the above, and at the same time, about a second axis 13 parallel to the axis Y of the grinding wheel, below the Osa feather by an angle corresponding to the tilt angle β of the end face of the bottom edge. It is fixed by inclining counterclockwise when viewed from above. This fixing may be performed by clamping the wings using a jig or the like.

A large number of wings 1... Are fixed in a stacked state in this state, and the end surface 6a of the upper jaw edge and the end surface 7a of the bottom edge of the recess 3 are ground by a grinding wheel 11, and further imagined in FIG. .. Are tilted in the opposite direction around the first axis 12 while keeping the inclination direction around the second axis 13 as indicated by the line, and the end face 7a of the bottom edge of the recess is And the end face 8a of the lower jaw edge are ground, and then the ridge is rounded by barrel polishing and the face is smoothly processed, so that the recess 3 having the end face shape shown in FIGS. 1 can be formed.

<< Effect of the Invention >> In the Osa assembled by the Osa feathers of the present invention, the upper jaw surface of the air guide guides air in the direction of narrowing the air jet, and the bottom surface partially diffuses the air jet to the back side of the Osa and moves toward the cloth front. It acts to suppress the generation of the heading air flow, so that the turbulence of the air in the air guide is suppressed and the weft flies smoothly, and the weft also scatters outside the air guide from the opening on the weave front. Disappears.

Further, according to the manufacturing method of the present invention, the end surface of the peripheral edge of the recess of the wing that forms the air guide is shaped with an accurate shape and an inclined angle, and the occurrence of processing errors and variations is avoided. It is possible to accurately control the direction of the air flow that occurs, it is possible to generate the intended air flow in the air guide at the design stage, and it is possible to provide an Osa that can perform more stable weft insertion .

[Brief description of the drawings]

1 to 4 are views showing an embodiment of an Osa equipped with an Osa feather according to the present invention. FIG. 1 is a side view of the Osa feather, FIG. 2 is a partial front view of the Osa feather, FIG. FIG. 4 is an enlarged sectional view of a portion A in FIG. 1, and FIG. 4 is an enlarged sectional view of a portion B in FIG. Figures 5 to 7
FIG. 5 is a view showing a state in which the recess of the wing is ground by the method of the present invention. FIG. 5 is a side view, FIG. 6 is a front view, and FIG. FIG. 8 and 9 are explanatory diagrams showing the relationship between the air jet from the sub nozzle and the air guide. 10 and 11 are views showing the end face shapes of the recesses of the conventional Osa feather. FIG. 10 is a view corresponding to FIG. 3, and FIG. 11 is a view corresponding to FIG. In the figure, 1: Osa feather, 3: recess 5: air guide, 6: maxillary edge 6a: end face of maxillary edge, 7: bottom edge 7a: end face of bottom edge, 11: grinding wheel 12: first shaft , 13: second axis

Claims (3)

(57) [Claims] An air jet loom wing, wherein a recess (3) forming an air guide (5) for guiding a weft-inserted air flow is provided on the cloth fell side of the wing (1). 3) indicates that the end surface (6a) of the upper jaw edge (6) is a surface in the direction to restrict the air flow, and the end surface (7a) of the bottom edge (7) is a surface in the direction to diffuse the air flow. Characterized as Osa feather for air jet loom. 2. A step of cutting a thin plate into a shape having a recess (3) on the front side of a weave, and processing end surfaces (6a), (7a) and (8a) of the periphery of the recess by grinding. Grinding is characterized in that the thin plate to be ground is ground by tilting it around an axis (12) perpendicular to the axis of the grinding wheel (11).
A method for manufacturing a wing feather according to claim 1. 3. A step of cutting a thin plate into a shape having a recess (3) on the cloth fell side, and processing end surfaces (6a), (7a) and (8a) of the periphery of the recess by grinding. The grinding is performed by simultaneously inclining a thin plate to be ground around a first axis (12) perpendicular to the axis of the grinding wheel (11) and around a second axis (13) parallel to the axis. 2. The method for manufacturing a wing feather according to claim 1, wherein: