JPH0133663Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shuttleless loom for multicolor weaving, and more particularly to a device for electrically confirming the rotational phase alignment of a loom, a weft insertion device, and a weft storage device.

In multicolor weft insertion, a plurality of weft insertion devices and storage devices operate alternately in a predetermined order in synchronization with the rotation of the loom.

When the weft insertion is not completed completely, the loom
It automatically stops upon receiving the signal from the weft filler.
At this time, the loom must be reversed, the defective yarns removed, and the machine operated again. However, if the storage device is not separated from the main shaft of the loom before the loom is reversed, the weft yarns will wind up on the drum of the storage device. With,
A problem occurs.

For this reason, the loom is generally operated in reverse after the storage device is separated from the main shaft of the loom. Then, the storage device is connected to the main shaft of the loom again, but in a weft insertion device with two or more nozzles, the main shaft of the loom is rotated while the storage device is separated from the main shaft and stopped. A phase difference occurs in the repeating position and the rotation angle between the main shaft and the storage device. Therefore, it is necessary to match the rotational phases of the main shaft of the loom and the storage device.

Such conventional phase alignment is performed by visual judgment by the operator, which is inefficient.
In addition, the rotation angle of the main shaft, that is, the weft insertion device, and the rotation angle of the storage device are displayed by lighting lamps.
Although a device has been proposed that checks the lighting of both lamps corresponding to the same rotation angle and matches the phases, this device still requires artificial confirmation of the lighting between the corresponding lamps.

Therefore, an object of the present invention is to electrically detect the matching state during this type of phase matching, thereby simplifying the phase matching work.

Based on the above objective, the present invention detects the respective rotation angles of the sub-main shaft that rotates in synchronization with the main shaft of the loom and drives the weft inserting device, and the auxiliary shaft that interlocks with this and drives the storage device. By attaching a plurality of sensors at each predetermined rotation angle and matching the outputs of the sensors having the same rotation angle among these sensors, the state of phase alignment can be confirmed by lighting an indicator such as a lamp.

Hereinafter, the present invention will be specifically explained based on an embodiment shown in the drawings. The following explanation is in two colors.
The target is a three-over-one repeat machine that performs weft insertion in the order of "1, 1, 2, 1, 1, 2...".

First, FIG. 1 shows the phasing device 1 of the multicolor weft feeding device of the present invention in relation to the mechanical drive system and electric circuit of a two-color loom 2.
The loom 2 is, for example, an air jet type shuttleless loom, and is driven by a drive motor 3. A motor shaft 4 of this drive motor 3 is connected to a main shaft 6 of the loom 2 via an electromagnetic clutch 5. Further, the sub-main shaft 7 of the loom 2 is connected to the main shaft 6 at the same rotation ratio. A rotary shaft 9 is connected to this sub-main shaft 7 by a gear 8 having a rotation ratio of 1/N to the rotation speed N in the weft insertion pattern of the loom, for example, a reduction ratio of 1/3. No.
Weft insertion devices 11 and 12 of "No. 1" and "No. 2" are connected by cam mechanisms 13 and 14, respectively.
One cam mechanism 13 operates the weft insertion device 11 when the rotation angle is 0 degrees and 120 degrees during one rotation of the rotation shaft 9, and the other cam mechanism 14 operates the
When the rotation angle is 240 degrees during one rotation, the weft insertion device 1
Operate 2.

The sub-main shaft 7 is connected to an auxiliary shaft 16 by a manual clutch 15. A rotary shaft 10 is connected to this auxiliary shaft 16 via a gear 17 with a reduction ratio of 1/3.
is connected to this rotating shaft 10, a gear 18 with a rotation ratio of 2/1, and a gear 19 with a rotation ratio of 1/1.
and "No. 2" drum type storage devices 21 and 22 are respectively attached. Note that the auxiliary shaft 16 includes
A manual handle 20 is provided.

The weft insertion devices 11 and 12 and the storage device 2
When the main shaft 6 of the loom 2 rotates three times when the wefts 1 and 22 repeatedly operate in the order of "No. 1", "No. 1", and "No. 2", weft insertion becomes one repetition. Correspondingly, the rotation ratios of the gears 18 and 19 are 2/1 and 1/1, respectively, with respect to the rotating shaft 10, as described above.
It is set to 1. The drive motor 3 is controlled by a motor drive device 23, and the electromagnetic clutch 5 is controlled by a clutch drive device 24.

The phase alignment confirmation device 1 of the present invention includes a plurality of sensors 25, 26, 27, for example, three sensors 25, 26, 27 for detecting the reference position (rotation angle) of the rotation shaft 9, and the rotation shaft 1.
The same number of sensors 28, 29, and 30 are provided to detect the zero reference position (rotation angle). The three sensors 25, 26, 27 correspond to the pulse cam 31 attached to the rotating shaft 9, and the other three sensors 28, 29, 30 correspond to the pulse cam 32 attached to the rotating shaft 10. There is. Both pulse cams 31, 32 have one working projection on their periphery. These sensors 25, 26...30
are, for example, proximity (non-contact type) switches installed in three positions, and their sensor outputs A,
B, C and sensor outputs a, b, c are connected to the input terminals of corresponding AND gates 33, 34, 35, respectively. That is, sensors 25, 26...
The output ends of 30 are connected to the input ends of AND gates 33, 34, and 35 for each group having the same rotation angle. And gate 33, 34,
The output terminals of 35 are respectively connected to the input terminals of a NOR gate 36, and the output terminal of this NOR gate 36 is
It is connected to a power supply terminal 39 through an indicator 37 such as a lamp and a resistor 38, and is also connected to a start switch 40.
and the clutch drive device 24 via the inverting circuit 41.
and a control input terminal of the motor drive device 23.

Next, the operation of the phase alignment confirmation device 1 will be explained. When the loom 2 stops due to incorrect weft insertion, the electromagnetic clutch 5 is activated by the clutch drive device 24.
is activated to disconnect the main shaft 6 from the motor shaft 4 and to disconnect the sub-main shaft 7 from the auxiliary shaft 16 using the manual clutch 15. In this state, the main shaft 6 of the loom 2
After reversing the thread, the illegal thread is removed. At this time, since the rotational phase of the auxiliary main shaft 7 and the rotational phase of the auxiliary shaft 16 are different from each other, the rotational phase of the storage devices 21 and 22 is dependent on the rotation of the main shaft 6, that is, the movement of the loom 2 and the movement of the weft insertion devices 11 and 12. It becomes out of sync.

Therefore, when restarting the operation, with the manual clutch 15 disengaged, turn the manual handle 20 to rotate the auxiliary shaft 16 in the positive direction little by little. Rotate in the positive direction in the direction approaching the rotation phase (rotation angle) of 6.

Now, the pulse cam 31 of the rotating shaft 9 is connected to the sensor 25.
Assume that the sensor 25 is facing the sensor 25 and is generating a sensor output A of the "H" level. This sensor output A is sent to one input terminal of the AND gate 33.

On the other hand, if the auxiliary shaft 16 is rotated by operating the manual handle 20 and the pulse cam 32 comes to the position of the corresponding sensor 28, the sensor output a
becomes “H” level and is sent to the other input terminal of the AND gate 33. At this point, and gate 33
generates an output of "H" level, so the output of the NOR gate 36 changes to "L" level, and the display 37 indicates the matching state by lighting or the like. At that time, the operator can visually check whether the phases match by changing the state of the display 37.

On the other hand, when the Noah gate 36 is outputting an "L" level output, that is, when the rotational phases of the sub-main shaft 7 and the auxiliary shaft 16 match, if the operator manually turns on the start switch 40. , the output of the NOR gate 36 is sent to the inverting circuit 41
The signal is converted into an "H" level signal, and a start permission signal is given to the motor drive device 23 and clutch drive device 24. Therefore, in a state where the phases do not match, the loom 2 is set to a state where it can be started.

The reason why the manual clutch 15 was adopted will be described here. When the loom 2 stops due to a weft insertion error during operation of the loom 2, after repairing the weft, the storage device 15
All the stored weft yarns are pulled out from 1 and 22, only the storage devices 21 and 22 are newly rotated to wrap a predetermined amount of weft yarns, and then restarted. At this time, if the number of revolutions is within one repetition, the amount of stored weft yarns will be insufficient due to the multicolored weave, and weft re-insertion cannot be started. Therefore, in addition to the shift in the phase difference between the sub-main shaft 7 and the auxiliary shaft 16, it is necessary to rotate the storage devices 21 and 22 by one repetition. Whether or not to rotate this one extra time is as follows:
Since it is determined by the operation performed by the worker, it is not possible to simply rotate by the phase difference. The manual clutch 15 allows free operation at this time, thus making it possible to take appropriate action.

Next, FIG. 2 shows another example of the circuit. OR gate 42 for OR condition is for switching
It is connected to the base of an NPN type transistor 43. This transistor 43 is connected in series between a power supply terminal 46 and a ground 47 together with an indicator 44 such as a buzzer and a resistor 45. The start switch 40 is interposed directly between the emitter of the transistor 43 and the motor drive 23 and clutch drive circuit 24.

When the phases match, the OR gate 42 turns on the transistor 43 with an output of "H" level, and
A sound is emitted on the display 44. In the state of phase mismatch,
Even if the start switch 40 is set to the on state, the motor drive device 23 and the clutch drive device 24
cannot be driven because it has not received an "H" level activation permission signal.

The sensors 25, 26, ... 30 are not limited to proximity switches, but may be encoder-type pulse generators or limit switches, for example, and the number of sensors installed is not limited to three, but depends on the relationship with the number of repetitions. Of course, the number may be one or more. Also, AND gates and NOR gates change depending on the signal level, so
Any gate with an OR condition or an AND condition will suffice.

In this invention, the rotational phases of the sub-main shaft and auxiliary shaft of the loom are detected by sensors, and the matching state can be electrically confirmed by the AND condition gate, making positioning work efficient and easy. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the phase matching confirmation device of the present invention, and FIG. 2 is a circuit diagram of another embodiment of the electric circuit. 1...Phase alignment confirmation device for multicolor weft supply device, 2...Loom, 6...Main shaft, 7...Sub-main shaft,
9, 10... Rotating shaft, 11, 12... Weft insertion device, 15... Manual clutch, 16... Auxiliary shaft, 2
1, 22... Storage device, 25, 26, 27, 2
8, 29, 30...Sensor, 33, 34, 35
...And Gate, 36...Noah Gate, 37...
...Display device, 40...Start switch, 44...Display device.

Claims (1)

[Claims for Utility Model Registration] (1) The auxiliary shaft is connected to the auxiliary shaft, which rotates at the same rotation ratio in synchronization with the main shaft of the loom, through a manual clutch that can be connected only at a predetermined angular position, and The shaft rotates by 1/N of the number of rotations N during the insertion pattern, and is connected to the auxiliary shaft and rotates by 1/N in conjunction with the storage device. around the axis of rotation,
Install N sensors each at a predetermined angle to detect the reference position of these rotational axes, and connect the output terminals of a pair of sensors corresponding to the same rotational phase to each input terminal of the AND condition gate. The output end of the gate for these AND conditions is connected to the input end of the gate for the OR condition, and the output end of the gate for the OR condition is connected to a display device. phase alignment confirmation device. (2) The phase alignment confirmation device for a multicolor weft yarn supplying device as set forth in claim 1 of the utility model registration claim, characterized in that the output end of the OR condition gate is connected to a start switch.