JPS6118053Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a loom having a dobby loom.

Generally speaking, as a method of transmitting the lifting motion to the heald frame of a dobby machine, a so-called top rail is installed above the loom, one in the front and one in the front and back, and the dobby machine is fixed to either the left or right end of the top rail, and two or two top rails are attached to the jack lever of the dobby machine. There is a method in which two or more wire cables are connected and the wire cables are fixed near both ends of the heald frame using several guide rollers installed at appropriate positions, and the vertical movement of the dobby machine is transmitted to the heald frame. It is used.

However, as the number of rotations of the loom increases and the speed increases, the vibration of the dobby machine installed high above the loom is magnified, or it resonates with the vibration of the loom, further aggravating the vibration.

In addition, if a large number of looms are installed by installing dobby machines, motion transmission cables, guide rollers for the cables, etc. above the looms, visibility into the inside of the factory may be obstructed, and motion transmission members installed above may The fluff and clumps of fluff accumulated in these can fall onto the warp threads or woven fabrics, reducing the quality of the product, inducing breakage of the warp threads and reducing movement efficiency, and furthermore. However, there were various problems such as staining of the fabric due to falling lubricating oil, resulting in defective fabric.

A technique aimed at solving the above-mentioned disadvantages is disclosed, for example, in Japanese Patent Publication No. 45-21910. That is, in that publication, a return device is installed below the heald frame, and the heald frame is pulled downward via a cable or the like.
A technique has been shown in which upward anti-traction is performed by a group of springs.

However, according to the above-mentioned conventional example, when the heald frame ascends and descends at high speed, adjacent heald frames interfere with each other, resulting in problems such as incomplete opening between warp thread groups. .
If the motion transmission member is installed above the heald frame, the above interference will be eliminated by using the heald frame guide device disclosed in, for example, Utility Model Publication No. 30-5744, but the motion will be transmitted below the heald frame. When installing the members, the wire cable connected to the jack lever of the dobby machine passes through the side of the loom, and it is difficult to install the above-mentioned guide device because the wire cable passes through.

The present invention aims to solve the above problems.

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

In FIG. 1, a dobby machine 3 is placed and fixed on a support block 4 on the side of a loom 2 in which a plurality of heald frames 1 are arranged side by side in a direction perpendicular to the plane of the paper. The dobby machine 3 is interlocked with the loom 2 via a belt 10 wound between a pulley 7 of an input shaft 6 or an output shaft of the loom driven by a motor 5 and a pulley 9 of a drive input shaft 8 on the dobby machine side. The jack lever 11 corresponding to each heald frame 1 swings up and down.

Swinging of the jack lever 11 is performed by a mechanism as shown in the second figure. In other words, in FIG.
Hooks 15 and 16 are pivotally supported on the hook 1.
5 and 16 are urged against the levers 13 and 14 by springs 17 and 18. Hooks 22 and 23 are pivotally supported on a lever 21 that is pivotally supported on the tip of a lever 20 supported on a shaft 19, and bars 24,
By moving the hook 25 in the direction of the arrow, the hook 22 and the hook 23 are engaged with the hook 15 and the hook 16, so that the jack lever 11 swings around the shaft 27 via the lever 20 and the rod 26, and the tip of the jack lever 11 swings. When raised, the heald frame 1 connected by wire cables 28, 29 is adapted to be lowered. This hook 1
5 and the hook 16 are not engaged with the hook 23 or the hook 24, the wire cable 2
8 and 29 cannot be raised.

On the other hand, a first
As shown in Figure 3, two rails 30, 30 are fixed between machine stands 31, 32,
U-shaped supporting members 33, 33 are laid and fixed at right angles between them. I-shaped rails 34, 34 are fixed on the U-shaped supports 33, 33, and shafts 37, 37 support lifting levers 36, 36 between bearings 35, 35 provided at both ends of the rails 34, 34. is supported.

The lifting lever 36 has a recess 39 at one end that supports the shaft of the spring support plate 38.
6 (FIG. 4), and the lower end of a connecting lever 40, which is detachably connected to the lower surface of the heald frame 1, is pivotally supported at the other end. A guide plate 41 is fixed between the shaft 37 of the lifting lever 36 and the connecting lever 40, and wire cables 38 and 39 whose ends are connected to the protrusion 42 of the lifting lever 36 are guided by the periphery of the guide plate 41. do. Guide protruding edges 43 are formed on both sides of the guide plate 41, and swing in contact with the guide protruding edges of the lowering lifting lever 36.

The ends of the wire cables 28 and 29 are connected to the protrusion 42 of the lifting lever 36 via a cable length fine adjustment screw rod 44, and the lengths of the two wire cables 28 and 29 can be finely adjusted. Thus, the parallelism of the heald frame 1 is maintained.

A spring 4 that biases the heald frame 1 in the upward direction via the lifting lever 36
5 has an upper end connected to the plate 38, and a lower end connected to the L-shaped locking body 46 fixed to the side surface of the U-shaped support member 33.
As shown in Fig. 5, the notch 4 formed on the lower surface of the locking body
7 is supported by a pin 48 fitted to the lower part of the spring. Therefore, the spring 45 is replaceable and the spring force can be adjusted. Note that the recess 39 of the lifting lever 36 and the plate 38
The shaft 49 is always in point or line contact with the recess 3.
9 and therefore the lifting lever 36
It does not vibrate during this behavior.

The heald frame 1 moves up and down with a constant stroke via the connecting lever 40 as the lifting lever 36 swings.
It slides along guides 50 and 51 fixed to 1 and 32 and rises and falls without swinging back and forth. That is, as shown in FIG. 6, the U-shaped grooves 52 of the fixed guides 50, 51
A side frame 1a of the heald frame 1 or a guide piece fixed to the frame is slidably inserted into the heald frame 1, and adjacent heald frames can move up and down without interfering with each other.

Furthermore, in FIGS. 1 and 6, the wire cables 28 and 29, whose ends are locked to the lifting lever 36, are wound around a guide plate 41 and passed through a freely rotating double grooved roller 53 below. The loom is connected to the jack lever 11 of the dobby machine 3 from below through the concave long groove 54 of the side guide 50.

In addition, for one heald frame 1, left and right 2
Since the two wire cables 28 and 29 are connected and their ends are connected to one jack lever 11, the guide roller 55 on the left side may be a normal single groove roller, but the two cables 28 and 29 are wound around. The roller 53 is a roller with two grooves as shown in the third figure, so that the cables do not interfere with each other.

Therefore, when the jack lever 11 of the dobby machine 3 is raised in accordance with the command from the pattern card 12, the two wire cables 28, 29 connected to the jack lever 11 are simultaneously pulled up, and the rollers 53,
lifting lever 36 connected via 55;
36 pivots around the shaft 37 against the force of the spring 45, and the heald frame 1 is lowered via the connecting lever 40 to assume the lower position. In this way, an opening is formed between the group of warp threads passed through the mails 57 of the heald 56 supported in large numbers on the heald frame in the lower position and the group of warp threads passed through the mails of the heddle held in the upper position. Weft yarn is introduced along the pattern card, and the fabric is woven according to the pattern card. After the weft thread has been input, the jack lever 1
1 returns to its original position, that is, if it descends, the wire cables 28, 29 return to their original states by the reverse rotation of the lifting lever 36 by the force of the spring 45, and the heald frame 1 also returns to its original position.

As described above, in the present invention, the dobby loom is placed on the side of the loom, and the lifting lever has a connecting lever below the heald frame that is connected to the lower surface of the heald frame, and the wire cable that connects to the jack lever of the dobby loom. Since a heald frame elevating mechanism such as a guide roller that guides the heald frame from the side of the dobby machine to the lower part of the heald frame is arranged, there is nothing above the heald frame, which eliminates the various drawbacks mentioned above.

That is, vibrations caused by high-speed operation of the dobby machine are not directly transmitted to the loom 2, and fluff, lubricating oil, etc. accumulated in the dobby machine do not fall onto the fabric.

Furthermore, compared to the case where the dobby machine and loom are installed above the machine, the height of the entire machine can be lowered by the height of the dobby machine and the length of the wire cable that hangs the heald frame, allowing repair and maintenance of the dobby machine and loom. For example, when exchanging the heald frame, when operating by the so-called frame exchange method, by uncoupling the connecting lever 40 and the heald frame, the heald frame can be pulled out upward along the guides on both sides. It can be easily removed and installed. Furthermore, since the heald frame is slidably inserted and supported in the guide groove of the fixed guide, which has a concave elongated groove for passing the wire cable connected to the jack lever of the dobby machine, the heald frame can be moved up and down at high speed. Adjacent held frames do not interfere with each other.

[Brief explanation of the drawing]

Figure 1 is a schematic front view showing an embodiment of the device of the present invention, Figure 2 is a schematic diagram showing an example of a dobby machine, Figure 3 is a side view of the heddle frame operating mechanism of the loom, and Figure 4 is a spring FIG. 5 is a partially sectional side view of the same, and FIG. 6 is a schematic plan view showing the relationship between the heald frame and the guides on both sides. 1... Heald frame, 1a... Heald frame side frame, 2... Loom, 3... Dobby machine, 11...
... Jack lever, 28, 29 ... Wire cable, 36 ... Lifting lever, 40 ... Connecting lever, 45 ... Spring, 53,
55... Guide roller, 52... Guide groove, 54
... Concave long groove.

Claims (1)

[Scope of utility model registration request] The dobby machine is placed on the side of the loom, and two wire cables connected to the jack lever of the dobby machine run from the side of the loom to the bottom of the heald frame via guide rollers, and are biased by the spring at the bottom of the heald frame. The heald frame is connected to a pair of lifting levers, and the lower surface of the heald frame is supported via the lifting lever and the connecting lever, and both side frames of the heald frame are slidably inserted and supported into the guide grooves of the fixed guide. A loom having a dobby loom, characterized in that the fixed guide is formed with a concave elongated groove for passing the wire cable.