JP2704265B2 - Loom cutting warp separation device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cut warp separation device for a loom for properly separating and holding a cut warp from a warp group when a warp break occurs in the loom. About.

2. Description of the Related Art When a warp is cut during weaving of a woven fabric by a loom, the loom must be stopped immediately, the cut warp repaired, and the operation of the loom restarted. This is because, even if weaving is continued with the warp broken, serious woven defects occur in the woven fabric.

The occurrence of warp breakage is usually detected by a warp breakage detection device known as a so-called dropper device, but with regard to the search for a cut warp and its repair work,
A suitable automatic working mechanism has not been put into practical use, and it is mainly dependent on manual work by a weaver. However, the number of warps set on the loom is huge,
Searching and separating the cut warp from the warp group is an extremely complicated operation, and an automatic apparatus only for this search and separation operation has been proposed (JP-A-60-9952).

In this device, a warp suction nozzle is provided horizontally in the width direction of a warp group, and when a warp break occurs, the cut warp is sucked by the warp suction nozzle and separated from the warp group. The warp suction nozzle may be a pipe having a uniform shape in the width direction of the warp group, or may be a normal nozzle shape capable of moving in the width direction of the warp group.

SUMMARY OF THE INVENTION However, according to the conventional technique, when the warp suction nozzle is formed in a uniform pipe shape in the width direction of the warp group, the nozzle is uniform over the entire width of the warp group. Since the suction operation is performed in a short time, a large-capacity suction device is required, and the problem that the operating cost of the loom becomes excessive cannot be avoided. In the case of a nozzle which can be moved in the width direction of the warp group, a position where a warp break occurs (hereinafter referred to as a yarn break position)
Until then, the nozzle has to be moved while searching for the cut warp, so that the time required for the search is long, and the operating rate of the loom tends to be low. Furthermore, in any type, there is a problem that air consumption is wasted because the suction air is consumed for portions other than the yarn breakage position.

Accordingly, an object of the present invention is to provide a warp separating member that is formed by dividing a plurality of blocks in the width direction of a warp group and that corresponds to a yarn break position detected by a warp break detecting device. By operating the blocks to be cut, the capacity of the air suction means or the air blowing means for each block is small, the search time for the cut warp is short, and the wasteful air consumption can be minimized. The object of the present invention is to provide a cutting and warp separating device for a loom.

Means for Solving the Problems According to a configuration of the present invention for achieving the object, a plurality of blocks are formed in a width direction of a warp group of a loom, and each block includes an air suction unit or an air blowing unit. A warp separating member is provided, and at the time of warp breakage, one of the blocks corresponding to the yarn breakage position detected by the warp breakage detection device operates to suck or blow up and hold the cut warp. This is the gist.

In addition, a traversing member that faces the warp group may be provided for the warp separating member provided with the air suction means for each block, and this traversing member can also be used as a warp line regulating member.

In addition, the warp separating member may be movable, as a whole or for each of the blocks, between an operation position close to the warp group and a retreat position separated from the warp group.

Furthermore, it is assumed that an indicator for indicating that the cut warp is being held can be provided for each block.

According to this configuration, when a warp break occurs, when the air suction means or the air blowing means of the block corresponding to the yarn break position detected by the warp break detecting device is operated, the cut warp is cut. Can be separated from the warp group and held by being sucked by the block or blown up by the block, so that the search and separation operation of the cut warp can be realized.

At this time, if the traversing member facing the warp separating member is provided, the cut warp does not hang down, and thus the separating operation by the air suction can be further ensured.

Further, if the warp separating member can be moved between the operation position and the retreat position, after the suction and holding of the cut warp in the operation position, or after capturing the cut warp blown up and separated from the warp group, the warp By moving the separation member to the retracted position, the cut warp can be drawn out of the warp group long, and a large working space can be secured near the warp group, so that the repair work can be performed extremely easily.

Furthermore, if a display is provided for each block, the block holding the cut warp can be displayed, so that the weaving approach operation at the time of repair work is further facilitated.

 It works as described above.

Embodiments Hereinafter, embodiments will be described with reference to the drawings.

The cutting warp separating device of the loom mainly includes a warp separating member 10 whose both ends are vertically movably supported via cylinders 21 and 21 (FIG. 1).

The warp separating member 10 is provided with a warp group T set on a loom.
Are formed to be divided into a plurality of blocks 11, 11... In the width direction of the warp group T.

Each block 11 has an opening 11 facing the warp group T.
a (FIG. 2), a suction hole 11b opening toward the opening 11a is formed in the middle partition plate 11c, and the suction hole 11b is formed via the air pipe 11d and the solenoid valve SV. , Are connected to a common vacuum source AV (FIG. 3). An optical sensor 12 is provided in a space 11e between the opening 11a and the partition plate 11c (FIG. 2), and the optical axis 12a causes the suction hole 11b to pass through the opening 11a and the space 11e. Cut warp T1 sucked into
Can be detected. Here, it is assumed that the optical sensor 12 may be of a so-called reflection type or transmission type.

An indicator 12b that is turned on when the optical sensor 12 operates is attached to the upper part of each block 11.

The cylinders 21 and 21 are fixed on a gantry frame (not shown), and support the warp separating member 10 from above the warp group T so as to hang the warp separating member 10 (FIG. 1). Therefore, if the cylinders 21 and 21 are extended, the warp separating member 10 as a whole can take an operation position (two-dot chain line in the figure) sufficiently close to the upper surface of the warp group T. Is shortened, it is possible to separate from above the warp group T and take its retreat position (solid line in the figure).

Below the warp group T, a traversing member 22 is provided so as to face the warp separating member 10.

Generally, the warp group T is a warp beam on a loom.
Pulled out from WB via back roller BR (4th
(Fig.), While being opened by healds S1 and S2,
The woven fabric W can be formed by driving the weft with the reed L. The woven fabric W is wound up by a fabric winding beam TB via a winding roller TR. Therefore, between the back roller BR and the warp shedding WP, a warp breakage detecting device DS using droppers D, D... Is provided. It is good to arrange between WP.

The warp breakage detecting device DS includes a dropper bar DB, a plurality of thin plate-shaped droppers D, D... Corresponding to each of the warps forming the warp group T, and the dropper D dropped by the warp break. Contact electrical resistance
A plurality of sets of dropper units DU, DU,..., Which are combined with the DR, are used. However, when using n sets of dropper units DU, DU ...
The droppers D, D,... Of the DU are n of the warps forming the warp group T.
Corresponding to every other thread, it is possible to monitor all the warps forming the warp group T as a whole. Further, as shown in FIG. 4, the warp separating member 10 is
When disposed between the warp break detecting device DS and the warp shedding WP, the traversing member 22 may also be used as the warp line regulating members LS attached to the warp break detecting device DS, and the warp shedding WP side of the LS. You can do it.

The warp breakage detecting device DS and the blocks 11, 11,... Forming the warp separating member 10 are electrically connected (third embodiment).
Figure). That is, the DC power supply E is connected to each of the electrical resistors DR of the n sets of dropper units DU, DU,... Which form the warp breakage detecting device DS, while the dropper bar DB and the electrical resistors DR are connected.
The output signal Sd extracted from one end of the above is input to the comparator unit CP. However, the comparator unit CP is provided corresponding to each dropper unit DU,
Each of them determines the magnitude of the output signal Sd. That is,
Each comparator unit CP divides the output voltage of the DC power supply E into m steps equal to the number m of the blocks 11, 11,... Of the warp separating member 10, and according to which of the steps the output signal Sd is layered, It is assumed that the output terminals ij become high level (i = 1, 2,... N, j = 1, 2,... M, and FIG. 3 shows a case where n = 4, m = 6). There).
Further, when the output signal Sd exists, each comparator unit CP outputs the warp break signal St regardless of the magnitude of the output signal Sd.

An OR gate OR, an amplifier A, and the aforementioned solenoid valve SV are provided corresponding to the m blocks 11, 11,... Of the warp separating member 10, respectively. While connected to the SV coil, the main body of the solenoid valve SV is interposed between the suction hole 11b of each block 11 and the common vacuum source AV. Also, n comparator units
The connection between CP, CP... And the m OR gates OR, OR... Is such that the former output terminals ij (i = 1, 2,... N) are input to the j-th OR gate OR for all i. It has become.

When all the warps forming the warp group T are normal, the operation of the loom is continued, and the warp separating member 10 is at the upper retreat position by the cylinders 21, 21. Further, all the solenoid valves SV, SV ... are closed.

When one warp is cut, the dropper D corresponding to the cut warp T1 drops and forms a bridge between the dropper bar DB of the dropper unit DU to which the dropper D belongs and the electric resistor DR. As the output signal Sd of the DU, a value obtained by dividing the output voltage of the DC power supply E can be obtained according to the drop position of the dropper D, that is, the yarn break position.

When the output signal Sd is obtained, the comparator unit CP corresponding to the dropper unit DU first generates the warp breakage signal St, thereby stopping the loom via the loom control circuit (not shown), and By extending 21, 21, the warp separating member 10 can be moved to the operating position.

On the other hand, the output signal Sd causes the comparator unit CP
Becomes high level, the j-th solenoid valve SV is opened via the j-th OR gate OR, and the corresponding block 11 is activated. Here, j indicates that the magnitude of the output signal Sd blocks the output voltage of the DC power supply E.
Since it indicates which stage is divided by the number m of 11, 11,..., The block 11 activated at this time corresponds to the thread breakage position.

When the solenoid valve SV is opened, the suction hole 11b of the block 11 is opened.
Is connected to the vacuum source AV, so that the cut warp T1 existing immediately below the block 11 is sucked up by the suction hole 11b (FIG. 2), and the cut warp T1 thus sucked up is sucked.
Is detected by the sensor 12, the indicator 12b of the block 11 is turned on. At the same time, if the cylinders 21 and 21 are short-circuited and the warp separating member 10 is raised to the retracted position via a control circuit (not shown), the cut warp T1 can be separated and held from the warp group T. Thereafter, the repair work can be easily performed.

Another Embodiment The output terminals ij (i = 1, 2,...) Of the comparator units CP, CP,.
Not only n) but also i- (j-1) and i- (j + 1) can be input. In addition to the j-th block 11 corresponding to the thread break position,
The cutting warp T
Even in the case where 1 runs obliquely on the warp group T, it can be surely sucked and held.

The warp separating member 10 is disposed below the warp group T and, for each block 11, is replaced with an air suction means including a suction hole 11b, an air pipe 11d, a solenoid valve SV, and a vacuum source AV. An air blowing means for blowing out the air B can be provided (FIG. 5). Since the cut warp T1 is blown up from below and separated from the warp group T and can be held by the air B, the trapped warp T1 is manually caught for repair, and then the warp separating member 10 is moved downward. What is necessary is just to return to an evacuation position.

In the above description, the opening 11a of each block 11
Needless to say, an arbitrary nozzle shape or slit shape may be used in order to obtain a necessary and sufficient air flow rate with a small amount of air consumption. Of course, the indicators 12b may be provided separately from the warp separating member 10.

Further, the movement of the warp separating member 10 between the retracted position and the operating position is performed not only as a whole but also as a whole.
It may be performed for each block 11.
Since it is sufficient to move only the block 11 corresponding to the thread breakage position, the drive mechanism can be downsized. In addition, the warp separating member 10 may always be placed at the operation position and may not be accompanied by any particular movement.

The warp separating member 10 can be placed at any position between the back roller BR and the warp shedding WP, but in general,
Since the warp breakage is most likely to occur at the contact position with the healds S1 and S2, it is preferable that the warp break be located at a position close to the warp shed WP as long as the opening movement is not hindered.

Further, the thread breakage position, the block 11 of the warp separating member 10,
The electric system diagram in FIG. 3 for associating 11 with... Is an example, and any other configuration can be adopted. For example, if an electrode rod divided into m parts in the width direction of the warp group T is used instead of the electric resistor DR, by directly connecting each part of the electrode rod and the amplifier A, the comparator unit CP, CP…, Oogate OR, OR
A similar correspondence can be realized without using....

Effects of the Invention As described above, according to the present invention, a warp separating member divided into a plurality of blocks is provided, and each block is provided with an air suction unit or an air blowing unit.
The block corresponding to the thread break position detected by the warp break detecting device is operated to suck or blow up and hold the cut warp. In addition, since it is sufficient to operate the adjacent block, the capacity of the air suction means or the air blowing means is small, and
Since there is no need to move the warp separating member for searching for a cut warp, the search time is extremely short, and further, for blocks that do not correspond to the yarn breakage position and are not activated, there is no air consumption at all. Therefore, there is an excellent effect that unnecessary air consumption can be minimized.

[Brief description of the drawings]

1 to 4 show an embodiment, FIG. 1 is a perspective view of the entire structure, FIG. 2 is an enlarged sectional view taken along line XX of FIG. 1, FIG. 3 is an electric system diagram, FIG. The figure is an explanatory diagram of a use state. FIG. 5 is a main part view corresponding to FIG. 4 showing another embodiment. T: warp group DS: warp break detecting device LS: warp line regulating member 10: warp separating member 11: block 12b: indicator 22: traversing member

Claims (7)

(57) [Claims] A plurality of blocks are formed in the width direction of a group of warps on a loom, and a warp separating member provided with air suction means is provided for each of the blocks. A cutting warp separation device for a loom, wherein a device corresponding to a detected yarn breakage position is operated to suck and hold a cutting warp. 2. A cutting warp separating device for a weaving machine according to claim 1, wherein a traversing member is provided on said warp separating member so as to oppose said group of warps. 3. The cut warp separation device for a loom according to claim 2, wherein said traversing member also serves as a warp line regulating member for a warp group. 4. A plurality of blocks are formed in a width direction of a group of warps on a loom, and a warp separating member provided with air blowing means is provided for each of the blocks. A cutting warp separation device for a loom, wherein a device corresponding to a detected yarn breakage position is operated to blow up and hold the cutting warp. 5. The warp separating member as a whole is movable to an operation position close to a warp group and a retracted position separated from the warp group.
Item 5. The cutting warp separation device for a loom according to any one of Items 4 to 4. 6. The warp separating member according to claim 1, wherein, for each of said blocks, said warp separating member is movable between an operation position close to a warp group and a retracted position separated from said warp group. 5. The cut warp separation device for a loom according to any one of claims 4 to 4. 7. A cutting warp separating device for a loom according to claim 1, wherein an indicator is provided for each of said blocks to indicate that a cutting warp is being held.