JP3255061B2 - Dobby machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dobby machine for raising and lowering a heald frame of a loom.

[0002]

2. Description of the Related Art A dobby machine selectively raises or lowers a plurality of heald frames provided on a loom via wires. Generally, a heald frame is raised and lowered by a dobby machine so that several hundreds of warps are raised and lowered simultaneously. A plurality of heald frames are stacked, and these are alternately operated to form openings between the warp yarns.
Pass the weft through this opening using an air or water jet,
When the opening is closed and the same process is repeated again, weaving is performed, and a woven fabric having a predetermined pattern is completed.

In a conventional dobby machine, ends of a plurality of wires connected to a heald frame are connected so as to be arranged along the outer peripheral surface of a jack lever in the dobby machine, and the jack lever is swung so as to wind the wire. The heald frame was raised and lowered.

[0004]

However, in the conventional dobby machine as described above, since the ends of the wires are connected so as to be arranged along the outer peripheral surface of the jack lever, the outer peripheral surface of the adjacent jack lever has a width. With the restrictions
There has been a problem that the connection area on the outer peripheral surface of the jack lever is necessarily narrowed. The force exerted on the wire is so great that the diameter of the wire can be quite large and
However, there has been a problem that the connecting tool for connecting the wire ends cannot be made large enough. Even if an eye terminal or the like is provided, there is a problem that the strength is weak and the terminal is damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and to provide a wide connection area between a plurality of wires for lifting and lowering a heald frame and a jack lever. It is an object of the present invention to provide a dobby machine capable of providing a connecting tool of the type described above, and capable of securely connecting a plurality of wires to a jack lever.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned object, the present invention relates to a method of connecting a plurality of pulling wires connected to a heald frame to a turning lever, and winding the pulling wire around the turning lever. A dobby machine for raising and lowering a heald frame, wherein ends of a plurality of pulling wires are connected to a connecting portion of a turning lever in parallel with a turning surface. Further, a concave portion and a convex portion are provided in a connecting portion between the connecting tool and the rotating lever provided at an end of the pulling wire, and the concave portion and the convex portion are engaged to connect the pulling wire and the rotating lever. Furthermore, a plurality of wires supplied to the rotating lever in a direction perpendicular to the rotating surface are twisted by 90 °.
Parallel to multiple wire turning surfaces to guide
The rotation lever is provided with an engagement groove which is inclined so as to perform the engagement.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 5 is a schematic front view showing the entire loom. As shown, the loom 51 has a pair of left and right loom frames 52 erected on the floor, and a heald frame 53 is arranged between the loom frames 52. The left and right vertical frames 56 of the heald frame 53 are composed of the lifting wires 3.
To move up and down together with the lifting wire 3.

A plurality of heald frames 53 are provided so as to overlap in the thickness direction of the paper.
Numerals 3 are individually attached to the elevating wires 3 so as to operate independently of elevating. Hereinafter, the configuration for one heald frame 53 will be described, but the same configuration is adopted for all heald frames 53.

The dobby machine 1 is an underlay fixed on a floor, which swings a jack lever 2 around a support shaft 4 to drive a lifting wire 3 and a heald frame 53. A pulley 62 for guiding the lifting wire 3 is provided between the dobby machine 1 and the heald frame 53. Here, the jack lever 2 is
By pulling the lifting wire 3 against the urging force of
By lowering the heald frame 53 and releasing the pulling force, the heald frame 53 is raised by the urging force of the spring 69.

A rotating shaft 63 is provided on the top of the loom frame 52.
A swing arm 64 is provided so as to be rotatable around the arm. And the inner arm 6 of the swing arm 64
5, the tip of the lifting wire 3 extending from the dobby machine 1 is locked. Outer arm 6 of swing arm 64
6, one end of a spring 69 is locked.
The other end of 9 is locked to the loom frame 52.

Next, the jack lever 2 will be described.
FIG. 1 is a front view showing the jack lever. FIG.
It is AA sectional drawing which shows the detail of the wire engagement groove of FIG. 1,
FIG. 3 is a cross-sectional view taken along the line BB showing details of the wire engaging groove of FIG. 1, and FIG.
It is C sectional drawing.

As described above, a plurality of jack levers 2 are arranged on the fixed shaft 4 so as to overlap with each other and are rotatably mounted. The jack lever 2 mainly includes an arm 2a connected to the fixed shaft 4 and a main body 2b attached to the arm 2a. The wire 3 is engaged with the engagement grooves 2Ua and 2Ub on the peripheral surface of the main body 2b, and is pulled so as to be wound. The main body 2b is provided with a projection 2c, which comes into contact with an adjacent jack lever. Details of the engagement grooves 2Ua and 2Ub are shown in FIGS.
This is shown in the cross-sectional view of FIG.

The wire 3 shown on the left side in FIG. 1 is connected to a heald frame 53 (see FIG. 5). FIG.
The middle and left two wires 3a and 3b are supplied to the peripheral surface of the main body 2b of the jack lever 2. The two supplied wires 3a and 3b are supplied in parallel in the axial direction of the fixed shaft 4, that is, in the direction perpendicular to the paper surface. The state of the two wires 3a and 3b in that state is shown in section AA in FIG. As shown in FIG. 2, two wires 3a, 3
"b" is engaged with two engagement grooves 2Ua and 2Ub provided on the peripheral surface of the main body 2b of the jack lever 2, respectively.

In FIG. 1, the two wires 3a and 3b supplied side by side in the direction perpendicular to the sheet of FIG. 1 are at the position of section BB as shown in FIG. However, it gradually inclines toward the fixed shaft 4 side. Furthermore, groove 2U
When b is inclined and reaches the position of the cross section CC as shown in FIG. 4, the grooves 2Ua and 2Ub become one U-shaped groove 2Uc. At the position of the cross section CC, the wires 3a and 3b are in the direction perpendicular to the fixed shaft 4, that is, in the paper plane direction in FIG. Thus, the engagement grooves 2Ua, 2Ub, 2Uc twist the wires 3a, 3b supplied from the left side in the figure by 90 °, and
Guide to A. Connecters 3c and 3d are attached to the ends of the wires 3a and 3b, respectively. Connector 3
Recesses 3cv and 3dv are provided on the tip sides of c and 3d, respectively. The main body 2b of the jack lever 2 has a projection 2bv at the right end in FIG. 1 so that the recess 3dv is fitted.
Is provided. A fixing tool 2d is attached to the right end of the main body 2b in FIG. 1 with a screw 2e.
v is configured to fit. The pin 2f prevents the connecting tool 3d from shifting in the direction perpendicular to the paper surface.

As described above, the tips of the wires 3a and 3b are arranged in the direction of the paper surface , and the connecting members 3c and 3d are also arranged on the paper surface.
Can be fixed side by side in the direction, the wire 3a,
Even though 3b has a fairly large diameter, the couplings 3c, 3d can be up to approximately twice the diameter of the wire.
Therefore, the two wires 3a, 3b can be reliably connected to the fixing portion 2A without causing a problem that the fixing tools 3c, 3d are damaged. Further, the protrusion 2b
v, 2dv and the recesses 3cv, 3dv are fitted into the main body 2
Since the wire 3a and the fixture 2d are easily fixed to each other, the wires 3a and 3b can be easily attached and detached.

[0017]

As described above, according to the first aspect of the present invention,
Plural supplied to the jack lever side by side along the outer peripheral surface
Guide the wires to the connection, and wrap the ends of
Can be connected to a connecting part perpendicular to the outer peripheral surface of the lever.
Therefore, the connection area between the jack lever and the multiple wires that raise and lower the heald frame can be widened to secure a sufficient diameter of the wire, and the wire end should be a connector with sufficient strength. Therefore, even if the tension applied to the wire is large, the wire and the jack lever can be securely connected without breaking the connecting tool.

According to the second aspect of the present invention, the wire coupling
It makes it easy to attach and detach the jack lever to the connection
In addition, the wire and the jack lever can be reliably connected.

[0019]

[Brief description of the drawings]

FIG. 1 is a front view showing a jack lever of a dobby machine according to an embodiment of the present invention.

FIG. 2 is an AA sectional view showing details of a wire engaging groove of FIG. 1;

FIG. 3 is a BB sectional view showing details of a wire engaging groove of FIG. 1;

FIG. 4 is a cross-sectional view taken along the line CC, showing details of a wire engaging groove in FIG. 1;

FIG. 5 is a front view showing an outline of a loom to which the dobby machine of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dobby machine 2 Jack lever 2A Connecting part 2bv Convex part 2dv Convex part 2Ua Engagement groove 2Ub Engagement groove 3 Wire group 3a Wire 3b Wire 3c Connection part 3cv Depression 3d Connection part 3dv Recession part 51 Loom 53 Herd frame

Claims (2)

(57) [Claims] A plurality of wires connected to a heald frame are engaged so as to be wound around an outer peripheral surface of a jack lever, wire ends are connected to a connecting portion of the jack lever, and a pulling wire caused by swinging of the jack lever is connected. a dobby for raising and lowering the heddle frames towing, Rutotomoni provided a connecting portion connecting side by side vertically ends of a plurality of wires on the outer peripheral surface of the jack lever, side by side along the outer peripheral surface jack
Twist multiple wires connected to clever by 90 °
Guides, tilted so that they are parallel to the multiple wire rotation planes
A dobby machine characterized in that an inclined engagement groove is provided in a jack lever . 2. A connecting tool is provided at an end of a wire, and the connecting tool and a jaw are provided.
Connect the wire and jack lever to the connection part of the jack lever
2. The dobby machine according to claim 1, further comprising a fitting portion between the concave portion and the convex portion .