JPH0524256B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a leveling device for a dobby machine,
More specifically, the lever applied to the drive device of the heddle frame located at the top of the loom;
In a dobby machine equipped with a hook and knife,
The card cylinder or punch card gives a command to the dobby machine to pull the flexible transmission member suspended between the dobby machine and the drive device of the heald frame (hereinafter simply referred to as "the command device turns on"). This article relates to a leveling device for dobby machines that can be used for dobby machines.

<Prior art> In a loom having a dobby machine, when attaching a heald frame to the dobby machine as a preparatory work,
Or, when passing the warp threads through the heddle with the heddle frame attached to the dobby machine, when connecting the warp threads due to warp thread breakage during weaving work, when cleaning, etc., all (usually 16 or 24 pieces) of the heald frame An operation to align the heights of the buildings, that is, leveling, was being performed. Since it is usually easier to perform the leveling operations when the heald frame is aligned with the bottom dead center, the dobby machine is equipped with a leveling device that aligns the heald frame with the bottom dead center.

Conventionally, dobby machines were of the type that pulled the heald frame upward when the command device was on, for example when the card cylinder peg pushed the command lever, so as mentioned above, the dobby machine was of the type that pulled the heald frame downward. In order to perform leveling, it was sufficient to turn off each command device (see Japanese Utility Model Application Publication No. 57-167788 and Japanese Patent Application Publication No. 55-1385).

On the other hand, when it is desired to improve the texture of a spun yarn fabric, for example, it is necessary to increase the tension of the warp threads when the heald is at the bottom dead center than when it is at the top dead center. In this case, for the above type of dobby machine, the spring that urges the heald frame downward must be strong, and in order to raise the heald frame against the spring, a large load is placed on the dobby machine etc. It hung. Therefore, in order to solve this problem, when the command device 3 of the dobby machine 1 of the type that tows the heald frame downward is activated, for example, as shown in FIG. knife 7a
Alternatively, by pressing 7b, the knife 7a or 7b is hung on the hook 9a or 9b, respectively, and the jack lever 10 is activated to pull the flexible transmission member 27 to the dobby loom 1, which is pivoted above the side frame 29 of the loom. An operating lever 31 consisting of a fan-shaped portion 32, a connecting portion 33, and an arm 34, and a connecting rod 3 pivotally attached to the heald frame 11.
5 and a spring 37 connected to a bracket 36 fixed to the side frame 29. When the jack lever 10 pulls the flexible transmission member 27, the heald frame 11 is lowered, and since the spring 37 is suspended from the arm 34, the heald frame 11 is raised when the jack lever 10 returns. When the dobby machine 1 tows the flexible transmission member 27, the heald frame driving device 28 is applied.
It has been proposed to lower the
-Refer to Publication No. 112430).

<Problems to be Solved by the Invention> In the dobby machine of the type that tows the heald frame downward, since the heddle frame is at the bottom dead center when the command device is on, the dobby machine
It has not been possible to apply a conventional leveling device configured to turn off the command device and level the heald frame to the bottom dead center.

In view of such problems, the present invention provides a dobby machine of the type that pulls the heald frame downward.
To provide a leveling device that levels a heald frame to the bottom dead center without difficulty.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a leveling device for a dobby machine having the following configuration.

That is, in a dobby machine equipped with a switch lever, a hook, and a knife applied to a heald frame drive device disposed on the upper part of the loom, the command device can give an on command to the heald frame drive device. A command device,
A protrusion is formed on the stopper shaft of the stopper lever, and the stopper shaft is provided with a rotating means for rotating the stopper shaft. This is a leveling device in which a protrusion formed on a stopper shaft presses a lever to hang a hook and a knife.

<Function> By adopting the above-described structure, the present invention enables the fishing lever to be operated by the protrusion formed on the stopper shaft regardless of whether the command device is on or off, and the hook and the knife can be engaged. is,
Eventually, the Dobby machine lowered the heald frame,
It becomes possible to level the heald frame to the bottom dead center.

<Example> An example of the present invention will be described based on illustrated examples (FIGS. 1 to 3).

FIG. 1 is a schematic diagram showing the mechanism of a dobby machine,
FIG. 2 is a diagram showing the rotation means of the stopper shaft, and FIG. 3 is a perspective view showing the relationship among the rotation means, the stopper shaft, and the lever. still,
In these, parts that are the same as those in the conventional example (representing the dobby machine itself and the drive device for the heald frame, not the leveling device) are given the same reference numerals.

This embodiment uses a double-acting dobby machine (the dobby machine shown in Fig. 4) that operates 16 heald frames 11.
Projections 1 are provided on the stopper shafts 13a and 13b.
5 and stopper shafts 13a, 13b.
A rotating means 17 for rotating the is provided.

In the dobby machine 1, the stopper shafts 13a, 13b are usually a pair of levers 5a, 13b.
5b and the fishing levers 5a and 5b.
The gun levers 5a and 5b are pulled by the gun lever spring 6 and supported so that they do not fall inward. In this embodiment, these stopper shafts 13a, 13b
Paying attention to, a rib 15a is provided as a protrusion 15 at the part of the stopper shaft 13a located at the top in FIG.
Similarly, a tongue piece 15a' is provided at a portion that comes into contact with the fish lever 5a (1st to 13th rows). On the other hand, a rib 15b is provided as a protrusion 15 at the part of the stopper shaft 13b located at the bottom of the figure that contacts the gun lever 5b (rows 1 to 9), and a rib 15b is provided as a protrusion 15 at the part that contacts the gun lever 5b (rows 1 to 16). A piece 15b' is provided.

In the above, when the stopper shafts 13a, 13b are rotated by one step, the ribs 15a, 15b push the gun levers 5a, 5b, and the tongue pieces 15a', 15a', 15a', 15b', which are made of plate material having a dogleg shape in cross section, press the levers 5a, 5b.
5b' are stopper shafts 13a and 13, respectively.
The levers 5a and 5b are arranged so as to be pushed when the lever b is rotated one more step, that is, when it is rotated two steps.

On the other hand, the rotating means 17 has an eccentric shaft 19 connected to a leveling lever (not shown) disposed outside the dobby machine 1, as shown in FIGS.
A projecting piece 22 that contacts a substantially rectangular leveling cam 18 having three stages (~) with increasing distances from the eccentric shaft 19, rotates around a shaft 21, and contacts an abutting piece 26. An upright arm 20, a notch gear 23 with a contact piece 26 upright from its periphery to increase torque, and a stopper shaft 13 that directly engages with the notch gear 23.
The stopper shaft 1 is interlocked with the notch gear 23 via a medium gear 24a and a small gear 25 that lock the stopper shaft 1.
3b is formed from an intermediate gear 24b that is fixed to the shaft.

In the above, the shape of the protrusion 15 is the shape of the rib 15.
a, 15b, plate material 15a', 15 with doglegged cross section
It is not limited to b′, but may also be Pezgu or the like. Furthermore, although the command device in this embodiment is of a peg type, it may be of a punch card type, and is naturally applicable to a dobby machine with a swinging hook.

Below, the leveling operation will be explained in relation to the actions of the above-mentioned parts and the movement of the loom, that is, the movement of the knife.

(A) When the loom is in normal motion, the stage ( ) of the leveling cam 18 faces the arm 20 and is not in contact with it. In this state, the stopper shafts 13a, 13b
The only function is to prevent the original fishing levers 5a and 5b from falling inward (FIG. 1).

(a) Next, when the loom is stopped and a leveling operation is performed, the knife 7a is first placed in the engagement position (the knife 7b is in the separated position). Then, when the leveling cam 18 is turned and the stage ( ) is brought into contact with the arm 20, the arm 20 is pushed and rotated counterclockwise around the shaft 21, and the arm 20 is rotated counterclockwise around the shaft 21.
The protruding piece 22 of 0 presses the side surface of the abutting piece 26 erected on the notched gear 23. Therefore, the notch gear 23 rotates in the direction in which the abutment piece 26 is pushed (rotates upward and downward in FIG. 2). In conjunction with this operation, the middle gears 34a, 34b rotate in a direction in which the protrusions 15 of the stopper shafts 13a, 13b abut against the fish levers 5a, 5b, respectively. That is, as shown in FIG.
a pushes the 1st to 5th rows (counting from the rotating means 17; the same applies hereinafter) of the gun lever 5a, and the rib 15b pushes the 1st to 9th rows of the gun lever 5b, and the knives 7a and 7b push the hook 9, respectively.
It is brought down to a position where it can overlap with a and 9b. At this time, when the loom is rotated once, the first to fifth rows of heald frames 11 are lowered. Next, add another loom.
When rotated, the knife 7b and the hook 9b become stiff, and the first to ninth rows of heald frames 11 are lowered. In this case, the heald frames 11 in the first to fifth rows rise somewhat as the knife 7a descends, but immediately the knives 7b and hooks 9b
and stays at the bottom dead center. Therefore, compared to lowering the 1st to 9th rows of the heald frame 11 at once, lowering the 1st to 5th rows does not require much force, and approximately 6th to 9th rows are lowered.
All you need is the force to lower the row. In other words, the load applied to the dobby machine 1 is small.

(C) Next, turn the leveling cam 18 90 degrees to bring the stage into contact with the arm 20, and as described in (B) above.
Similarly, the stopper shafts 13a, 13
b rotates, and the tongue piece 15a' engages the fishing lever 5.
The tongue piece 15b' pushes the first to 13th rows of the gun lever 5b, and the knives 7a and 7b are brought down to positions where they can engage the hooks 9a and 9b, respectively. At this time, if the loom is rotated once, the 1st to 13th
The row heald frame 11 is leveled to the bottom dead center. Next, when the loom is rotated one more revolution, the knife 7b and the hook 9b are heated, and the first to sixteenth rows of heald frames 11 are leveled to the bottom dead center in the same manner as described above.

(d) Finally, when the leveling cam 18 is rotated 180 degrees to return to the state of (a), the notch gear 23 is returned to its original position by being pulled by a spring (not shown), and the protrusion 15 is connected to the locking lever. The contact is released and the loom can operate.

In this example, the 1st to 5th columns, the 1st to 9th columns
Since the heald frames are lowered in sequence from rows 1 to 13 and rows 1 to 16, the load applied to the loom is reduced, resulting in a leveling device that places less load on the dobby loom.

Further, although the heald frame 11 is leveled to the bottom dead center as described above, in order to level the heald frame 11 to the top dead center, it is sufficient to turn off the command device by using, for example, a card for plain weave in the command device 3 (conventional (same mechanism).

As described above, this embodiment is a leveling device applied to a dobby machine having 16 heald frames 11, but the protrusion 15 is added (the leveling cam 1
8 requires one more stage) or
The fish lever 5 that each protrusion 15a etc. comes into contact with
If you increase the number of a etc., the heald frame 11 becomes 24
It can also be applied to a leveling device for a dobby machine, which is a dobby type.

<Effects of the Invention> As described above, the present invention has a projection formed on the stopper shaft, and by rotating the stopper shaft, the lever is pushed by the projection, and the knife and the hook are separated. Since the heald frame is configured to be hung, it is now possible to level the heald frame to the bottom dead center even if the dobby machine is of a type that tows the heald frame downward when the command device is on. In other words, it is a leveling device that improves the workability of a dobby machine suitable for use in spun yarn fabrics and the like.

Furthermore, if the heald frame is pulled in several stages, the load applied to the entire loom will be dispersed and the durability of the entire loom will be improved.

[Brief explanation of drawings]

The illustrated examples show the outline of the mechanism of the dobby machine and the leveling device, FIG. 1 is a side view showing the state of the stopper shaft according to the embodiment of the present invention, and FIG. 2 is a side view showing the rotating means of the stopper shaft. Figure, 3rd
The figure is a perspective view showing the positional relationship of each part of the protrusion and the rotating means, and FIG. 4 is a side view of a conventional example (dobby machine). 1...Dobby machine, 3...Command device (card cylinder or punch card), 5a, b...Fish lever, 7a, b...Knife, 9a, b...Hook, 1
DESCRIPTION OF SYMBOLS 1... Heald frame, 13a, b... Stopper shaft, 15... Projection part, 17... Rotation means, 27...
Flexible transmission member, 28... drive device.

Claims (1)

[Scope of Claims] 1. In a dobby machine equipped with a lever, a hook, and a knife, which are applied to a drive device of a heald frame disposed on the upper part of a loom, a card cylinder or a punch card is transferred to the dobby machine. A leveling device for a dobby machine capable of giving a command to pull a flexible transmission member suspended between the drive device, wherein a protrusion is formed on the stopper shaft of the gun lever, The stopper shaft is characterized by a structure in which a rotation means for rotating the stopper shaft is disposed, and the mutual relationship thereof is as follows:
The leveling device comprises a structure in which the stopper shaft rotates and the protrusion formed on the stopper shaft pushes the fish lever, so that the hook and the knife are hung.