JP3387008B2 - Method of marking loom stop position of fragment loom - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for marking a loom stop position of a fragment loom for marking a woven fabric as an index in the inspection operation every time the loom is stopped.

[0002]

2. Description of the Related Art A loom is automatically restarted due to a trouble such as warp breakage or weft insertion failure during weaving, or is restarted even if the cause of the stop is resolved and restarted after a manual stop by an operator. In this case, weaving is likely to occur due to lack of beating force, and in case of warp breakage, warp knots and the like are left and weaving is likely to occur.

For this reason, the woven woven cloth is generally inspected by visual inspection by an operator. At the time of this inspection, since the worker does not know the position of the weaving bar or the wound in advance, it is necessary to carefully monitor the woven fabric surface over the entire length of the woven fabric. However, at the time of the inspection, the woven fabric is running at a considerably high speed, and because the woven fabric surface is exposed to a considerably bright lightning, the woven fabric surface is constantly monitored. This will make your eyes tired. This is not only very unfavorable from the viewpoint of occupational health, but also the inspection work itself may be inaccurate.

[0004]

In order to avoid such a problem, when a marking factor occurs, a piece to be marked by making the tuft length of the woven cloth different from the normal length for a predetermined period. A marking device for a loom is known from Japanese Patent Application Laid-Open No. 55-112343, and it has been proposed to automatically stop the inspecting machine by identifying a tuft with a length different from the normal one in the reexamining step. This allows the workers to
Eliminates the need to constantly monitor the woven surface. Also, there is disclosed a technique for displaying a marking factor according to the length of the tuft.

However, in order to form multiple tufts of different lengths, the tufts must be lengthened, which means waste of weft yarns. Therefore, in order to reduce the waste as much as possible, the marking factors had to be limited. Also,
Even if the marking factors are limited to the two minimum, the positions for cutting the atrial ears must be set at three positions, and the cutting position changing device must be mechanically complicated.

Therefore, an object of the present invention is to provide a method capable of displaying a large number of marking factors while minimizing the waste of weft yarns.

[0007]

In order to achieve the above-mentioned object, in the present invention, when a marking factor occurs,
In a marking device of a fragment loom that performs marking by making the tuft length of the woven fabric different from the normal length for a predetermined period, the loom stop is used as the marking factor, and the marking is immediately after the loom is started or is started. Start from the time when a predetermined weft insertion cycle has elapsed
The marking period is configured to be different depending on the cause of the loom stoppage. Here, by moving the weft cutting device of the marking device, the tuft length of the woven fabric is configured to be different from the normal length, or the weft cutting device of the marking device is arranged in parallel in the weft inserting direction, By selectively operating one of the weft cutting devices installed in parallel,
It is configured to make the tuft length of the woven cloth different from the normal length.

According to the structure of the present invention, when the loom continues to operate normally, the weft thread is cut at the normal position to form a normal tuft with a substantially constant length, but after the loom is stopped. Immediately after the start of the restart of the weaving machine, or when a predetermined weft inserting cycle has elapsed from the start of the loom, the weft yarn is changed to be cut at the marking position according to a command from the control means. Then, the weft cutting at the marking position is resumed to the weft cutting at the normal position again after continuing the preset marking period for the loom stop cause signal.

As the weft cutting device, a single weft cutting device may be moved between the normal position and the marking position in the approximately weft inserting direction, or in the normal position in which the weft cutting device is separated from each other at least in the approximately weft inserting direction. The weft cutting device for the marking and the weft cutting device for the marking position may be separately provided.

When the tufted ear is cut at the marking position, the tufted ear becomes longer or shorter than its normal position. Moreover, since the cutting time at the marking position differs depending on the cause of the loom stop, the width in the warp direction of the tuft selvage portion formed to have a length different from the normal length is formed differently depending on the cause of the loom stop.

Therefore, in the inspection process, the location where the loom is stopped can be visually identified by using the location where the tuft is formed with a length different from the normal as an index. Moreover, the reason why the loom is stopped can be identified by the length of the section in which tufts formed to have a length different from the normal length continuously exist, that is, the width in the warp direction.

Furthermore, by providing a plurality of marking positions, it is possible to generate a plurality of different tuft lengths that are different from normal ones. Therefore, this difference in tuft length and the difference in the width in the warp direction are combined. By doing so, the cause of the loom stop can be further finely distinguished and marking can be performed.

Incidentally, in the weft cutting device which is arranged a few centimeters or more away from the weft in the winding direction, the weft cutting at the marking position may be started immediately after the loom is restarted. If the weft thread beaten when the loom is stopped reaches the cutting position of the weft cutting device after a predetermined weft inserting cycle, the deviation of the winding direction between the loom stop position and the marking position can be eliminated. It can be a more accurate indicator.

As described above, according to the present invention, it is possible to minimize the waste of the weft thread and display a large number of marking factors. By this marking, the efficiency of the inspection work can be improved and the operator's efficiency can be improved. False positives can be reduced.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described based on examples with reference to the drawings.

FIG. 1 is a plan view showing a specific example in which the weft cutting device for marking of the present invention is arranged in the vicinity of the cloth edge on the non-feeding side of a fragment loom. In this specific example, the single weft cutting device 1 is used to move the weft cutting device 1 between the normal position and the marking position.

The weft Y inserted into the opening of the warp T by a weft inserting device (not shown) reaches the re-feeding side and then the reed R.
Thus, the fabric W is formed by being driven into the cloth fell W0. At this time, the weft yarn tip portion is caught by the catch cord C so that the weft yarn in the tension-free state protruding from the unwoven yarn side cloth edge D, that is, the tuft selvage F, is stabilized.

A weft cutting device 1 is arranged in the vicinity of the unwoven yarn side cloth edge D at a position several centimeters to ten and several centimeters away from the weft W0 in the winding direction.
The fixed edge 1A and the movable edge 1B, and the cloth-feed edge D on the non-feeding side
The tuft ear F is cut to a predetermined length between the catch cord C and the catch cord C. The movable blade 1B is a well-known one that is swingable around the axis P, is connected to a drive device (not shown), and normally closes the blade every 1-2 rotations of the loom to cut the selvage selvage F. The driving device may be an electric type or a mechanical type, but in order to cope with the movement of the weft cutting device 1, it is preferable that the driving device is attached to the weft cutting device 1 itself. Then, it is good to connect by a universal joint.

The weft cutting device 1 is connected to the tip of the pin 3 of the actuator 2 which receives a motion command from the control device 4 by an appropriate means, and is movable in the approximately weft inserting direction as the pin 3 reciprocates. It is arranged.

The method of moving the weft cutting device 1 is not limited to the above-mentioned method, and the weft cutting device 1 may be caused to swing around the swing axis Q of the actuator 5, as shown in FIG. 2, for example. Further, an input switch 6 and a loom stop sensor 7 are connected to the control device 4 (FIG. 1).

Next, the operation of this embodiment having such a structure will be described with reference to FIGS. 3 (a) to 3 (c).

FIG. 3 (a) shows how the weft cutting device 1 arranged at the normal position cuts the tufts F into the length F1 while the loom is in normal operation. After the cutting, the woven cloth is wound by a winding device (not shown) with the tufts F having a length F1. On the other hand, the weft yarn end portion G after cutting is guided to a waste box (not shown) while being caught by the catch cord C.

In FIG. 3 (b), after the weaving machine is stopped for some reason, the weft cutting device 1 is moved to the marking position, and after the loom is restarted, at the marking position, the tuft selvage F is set to the length F2. It shows how to disconnect.

After the cause of the loom stop occurs, a signal S indicating the cause of the loom stop is input from a weaving stop sensor 7 such as a weft insertion defect sensor or a warp stop sensor, or manually input from an input switch 6 by a worker. 4, the controller 4 issues a command to the actuator 2 after the weft insertion N1 cycle has elapsed since the loom was restarted,
The weft cutting device 1 moves from the normal position to the marking position by the actuator 2 which receives the command, and cuts the tufts to the length F2 at the marking position. Then, after the weft insertion N2 cycle has elapsed, the weft cutting device 1 again moves from the marking position to the normal position in response to a command from the control device 4, and cuts the tufts to the length F1 at the normal position. The state at this time is shown in FIG.

N1 of the N1 cycle is the number of weft insertion cycles required for the weft yarn beaten at the time of stopping to reach the cutting position of the weft cutting device 1, and the deviation in the winding direction between the loom stop position and the marking position. It is set to eliminate. In addition, N2 of the N2 cycle has different values depending on the cause of the loom stop. For example, when a signal is input from the weft insertion defect sensor, a signal is input from the warp stop sensor in a short cycle N2S. Since the controller 4 selects the long cycle N2L, the width H (corresponding to the (N2-N1) cycle) of the portion where the tuft length is F2 in the winding direction is stopped. It can be formed differently depending on the cause. Therefore, by seeing the difference in the width H, the reason why the loom is stopped can be visually identified. The difference between the tuft lengths F1 and F2 must be large enough to be clearly discerned by visual recognition. When the distance between the cutting position of the weft cutting device 1 and the cloth fell W0 is small, N1 =
0, that is, a command may be issued to the actuator 2 immediately after the loom is stopped and immediately before the loom is started, and there is no hindrance to the inspection operation.

In the above-described embodiment, the single weft cutting device 1 is used to move the weft cutting device 1 between the normal position and the marking position. However, as shown in FIG. 5, the weft cutting device for the normal position is cut. The device 11 and the marking position weft cutting device 12 are separately provided in the winding direction so as to be separated from each other, and when performing normal tuft cutting, the weft cutting device 1 for normal position is used.
When 1 is driven to perform the tuft selvage cutting at the marking position, switching may be performed by the switch 13 that receives a command from the control device 4 so as to drive the weft cutting device 12 for the marking position.

Next, by providing a plurality of marking positions and combining a plurality of marking positions (factor A) with a period of staying at the marking position (factor B), the cause of the loom stop can be further finely distinguished. An example will be described.

For example, the weft cutting device 1 can be selectively moved to three positions, two types of marking positions (factor A) are provided, and factor A1 (position A) and factor A2 (position B) are provided.
Then, two types of periods for staying at the marking position (factor B) are provided, and factor B1 (long period) and factor B2 (short period).
Then, factors A1 and A2 of factor A and factor B of factor B
There are four combinations in total with 1 and B2. For each of these four ways, for example, A1B1 → weft stop signal, A
1B2 → Manual stop signal, A2B1 → Stop signal, A2B
By assigning a stop cause signal such as 2 → motor overheat signal and storing and setting it in the control device 4, four kinds of stop causes can be left as indexes on the woven fabric and can be identified. That is, in the inspection step, the worker can identify the cause of the loom stop using the difference in the tuft length F2 and the width H in the winding direction as indexes.

By the way, if the number of factors A and B is further increased, the cause of the stop can be more finely distinguished. However, as for the marking position, the distance between the woven fabric cloth edge D and the catch code C is limited, so it is not so much. Even if many positions are set, the difference in the length F2 of the tufts becomes small, and the identification cannot be performed. Therefore, the marking positions are limited to a few types. On the other hand, regarding the period of staying at the marking position, there is no particular limitation on the number of factors, so it is desirable to increase the number of factors of the period of staying at the marking position (factor B) when the cause of stop is finely distinguished.

As an example of the above, FIG. 4 shows six types of markings M1 to M6 formed on the unwoven yarn side cloth ends. The parts other than the markings M1 to M6 are normal atrial ears.

The marking M1 is an index obtained by combining the factor A1 of the factor A and the factor B1 of the factor B, and is (A1B1).
Express. Hereinafter, the marking M2 is (A2B2), the marking M3 is (A2B1), and the marking M4 is (A1B).
3), marking M5 is (A1B2), marking M6
Becomes (A2B3). By assigning the cause of stop to each marking in advance, the worker first
By visually recognizing the marking, it is possible to recognize that the loom has stopped, and it is possible to identify the cause of the loom stop from the difference in the type of marking.

In addition, when weaving in advance, the markings M1 to M
The position 6 is stored as the weaving length from the reference position, the weaving length from the reference position is counted at the time of inspection, and the inspecting machine is automatically stopped when the storage portion comes. Then, the operator does not need to visually search for the positions of the markings M1 to M6, so that the burden on the operator is further reduced,
False positives can be further reduced.

Further, the presence of the markings M1 to M6 is
Even when the woven cloth is wound, that is, in the cloth wound state, it can be visually recognized from the side of the cloth winding. For example, in the cloth wound state before the inspection step, when none of the markings M1 to M6 is found, It is also possible to omit the inspection process,
Running costs can be significantly reduced.

By the way, in the above-mentioned embodiment, marking is performed on the opposite yarn feeding side, but it is of course possible to perform marking on the yarn feeding side as well. .

[0035]

As described above, according to the present invention,
In the weaving process, by forming tufts having a length different from usual in the tufts of the woven cloth to have different widths depending on the cause of the stop of the loom, it is possible to minimize waste of the weft thread and display many marking factors. Therefore, it is possible to easily find the position where the loom stops during the weaving process and to identify the cause of the stop during the weaving process. Therefore, the efficiency of the inspection work can be improved and the false recognition of the operator can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing an arrangement example of a loom stop position marking device of the present invention.

FIG. 2 is a plan view showing a driving example of the loom stop position marking device of the present invention.

FIG. 3 is a plan view showing an operation sequence of the loom stop position marking device of the present invention.

FIG. 4 is a plan view showing a marking example of the present invention.

FIG. 5 is a plan view showing an arrangement example of the loom stop position marking device of the present invention.

[Explanation of symbols]

1 Weft cutting device 2 actuators 3 pin 4 control device 5 actuators 6 input switch 7 Loom stop sensor C catch code F cluster ear R reed T warp Y weft W woven cloth W0 Origuchi

Claims (3)

(57) [Claims] 1. A marking device of a fragment loom, which performs marking by causing a tuft length of a woven fabric to be different from a normal length for a predetermined period when a marking factor occurs, wherein a loom stop is used as the marking factor. At the same time, a method for marking a loom stop position of a fragment loom is characterized in that the marking is started immediately after the start of the loom or when a predetermined weft insertion cycle has elapsed since the start of the loom, and the marking period is varied depending on the cause of the loom stop. 2. The method for marking a loom stop position of a fragment loom according to claim 1, wherein the tuft length of the woven fabric is made different from the normal length by moving the weft cutting device of the marking device. 3. The weft cutting device of the marking device is arranged in parallel in the weft inserting direction, and one of the arranged weft cutting devices is selectively operated to make the tuft length of the woven fabric a normal length. The method for marking a loom stop position of a fragment loom according to claim 1, wherein the method is different.