JP2000073258A - Action displaying apparatus of electromagnetic operating means in loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To grasp lowering state of voltage applied to electromagnetic operating means. SOLUTION: An apparatus 37 for inputting weaving conditions inputs and sets weaving conditions such as rotating rate of a loom, weft density and weaving width into a loom control computer C. The loom control computer C determines each magnetization and demagnetization timing of an electromagnetic solenoid 12, electromagnetic opening and closing valves 20-25 and an electromagnetic cutter 31 based on inputted information of weaving conditions. A display apparatus 33 is signally connected to the loom control computer C. The display apparatus 33 operates and displays magnetization numbers among the electromagnetic solenoid 12, electromagnetic opening and closing valves 20-25 and an electromagnetic cutter 31 during one revolution of loom based on information of each magnetization and demagnetization timing of electromagnetic solenoid 12, electromagnetic opening and closing valves 20-25 and the electromagnetic cutter 31 determined by the loom control computer C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation display of electromagnetically operating means in a loom using a plurality of electromagnetically operating means such as a jet loom.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Application Laid-Open No. 9-59851, in a jet loom in which weft insertion is performed by the jetting action of a main weft insertion nozzle and a weft insertion auxiliary nozzle,
Electromagnetic actuation means such as a solenoid and a plurality of solenoid on-off valves are used. The solenoid drives a locking pin for unwinding and preventing unwinding of the weft in the length measuring and storing device. The electromagnetic on-off valve is used for switching between supplying and stopping air supply to the weft insertion main nozzle and the weft insertion auxiliary nozzle. These solenoids, which are electromagnetic actuation means, and a plurality of solenoid on-off valves are actuated by applying a predetermined voltage.

[0003]

The operation timings of the solenoid and the plurality of solenoid on-off valves need to be properly set in order to satisfactorily insert the weft. Therefore, most of the operation timing of the solenoid and the operation timing of the solenoid on-off valve for the weft insertion main nozzle overlap, and a part of each operation timing of the adjacent electromagnetic on-off valve for the weft insertion auxiliary nozzle overlaps. When the number of the electromagnetic actuation means whose operation timings overlap as described above increases, the voltage applied to the electromagnetic actuation means decreases, and the electromagnetic on-off valve may not open at a predetermined timing or may not open at all. When such a situation occurs, a weft insertion error occurs.

An object of the present invention is to make it possible to grasp the state of a drop in the voltage applied to the electromagnetic actuation means.

[0005]

According to the first aspect of the present invention, a voltage drop reflecting element reflecting a voltage drop state applied to the plurality of electromagnetic actuation means during operation corresponds to a loom rotation angle. An operation display device having a display means for displaying is constructed.

[0006] The configuration in which the voltage drop reflecting element in each of the electromagnetic actuating means is displayed in correspondence with the loom rotation angle makes it possible to grasp the overlapping of the operation timing of each electromagnetic actuating means. The grasp of the overlap of the operation timings of the respective electromagnetic actuation means enables the grasp of the degree of drop of the voltage applied to the electromagnetic actuation means.

According to a second aspect of the present invention, in the first aspect,
The display means displays the number of excitations of the electromagnetic operation means as a voltage drop reflecting element. The number of excitations of the electromagnetic actuation means is appropriate as a voltage drop reflecting element.

[0008] In the invention of claim 3, in claim 1,
The display means may display, as a voltage drop reflecting element, an expected voltage value obtained by subtracting an expected voltage drop based on an operation state of the plurality of electromagnetic actuation means from a rated voltage value applied to all the electromagnetic actuation means. I made it.

An expected voltage value obtained by subtracting an expected voltage drop from the rated voltage value is suitable as a voltage drop reflecting element.
According to a fourth aspect of the present invention, in the first aspect, the operation display device comprises a voltage detecting means for detecting a voltage applied to the electromagnetic actuating means, wherein the display means has a voltage detected by the voltage detecting means. The value is displayed as a voltage drop reflecting element.

The voltage value detected by the voltage detecting means is optimal as a voltage drop reflecting element. According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the display means includes the voltage drop reflecting element based on an emergency stop signal output from an emergency stop signal output means for emergency stop of the loom. Was displayed.

The configuration in which the voltage drop reflecting element is displayed at the time of the emergency stop of the loom is effective in quickly determining whether or not the emergency stop of the loom is caused by a drop in the voltage applied to the electromagnetic operating means. It is.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the weaving machine is characterized in that the weaving machine inserts a weft into the jet loom by a jetting action of a weft insertion main nozzle and a weft insertion auxiliary nozzle. The electromagnetic actuating means is an electromagnetic opening / closing valve that switches between supplying and stopping air supply to the weft insertion main nozzle and the weft insertion auxiliary nozzle.

The present invention is suitable for application to a jet loom.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is embodied in a jet loom will be described below with reference to FIGS.

M shown in FIG. 1 is a loom drive motor, which is controlled by a loom control computer C. The loom control computer C is turned on by the start switch 10
The operation of the loom drive motor M is commanded based on the operation. 1
Reference numeral 1 denotes a winding type weft length storage device. The winding of the weft onto the yarn winding surface 111 of the weft measuring and storing device 11 and the unwinding of the weft from the yarn winding surface 111 are performed by the electromagnetic solenoid 12.
Is controlled by the movement of the locking pin 121. Excitation and demagnetization of the electromagnetic solenoid 12 are performed under command control of the loom control computer C via the drive circuit 13. The loom control computer C controls the excitation and demagnetization of the electromagnetic solenoid 12 based on the weft unwinding detection information from the weft unwinding detector 14.

The weft yarn Y pulled out and ejected from the yarn winding surface 111 by the ejection action of the weft insertion main nozzle 15 is
A plurality of weft insertion auxiliary nozzles 161, 162, 163, 1
64 relay injections. When the weft insertion is performed satisfactorily, the presence or absence of the weft yarn Y reaching the weft insertion end is detected by a photoelectric sensor type weft insertion error detector 17 in a predetermined loom rotation angle range. When the weft has not arrived, the weft insertion error detector 17 outputs a weft insertion error detection signal to the loom control computer C. The loom control computer C stops the operation of the loom based on the input of the weft insertion error detection signal.

At the weft insertion end, a stretch nozzle 18 and a gripping pipe 19 are installed facing each other. The facing gap between the stretch nozzle 18 and the gripping pipe 19 intersects the weft insertion path of the weft Y. When the weft Y is inserted normally, the leading end of the weft Y is blown into the gripping pipe 19 by the jetting action of the stretch nozzle 18. The leading end of the weft Y is gripped by the air jet force in the gripping pipe 19, and an appropriate tension is applied to the weft Y.

The weft insertion pressure air injection in the weft insertion main nozzle 15 is controlled by the demagnetization of the solenoid on-off valve 20. The pressurized air injection for weft insertion in the weft insertion auxiliary nozzles 161 to 164 is performed by electromagnetic on-off valves 21, 22, 23, 24.
Is controlled by the excitation and demagnetization of. The weft grasping pressure air injection in the stretch nozzle 18 is controlled by the demagnetization of the electromagnetic on-off valve 25. The solenoid on-off valve 20 is connected to a pressure air supply tank 26, and the solenoid on-off valves 21 to 24 are connected to a pressure air supply tank 27. Solenoid on-off valve 25
Is connected to a pressurized air supply tank 28.

Excitation / demagnetization control of each of the solenoid on-off valves 20 to 25 is performed as follows.
This is performed by a command from the loom control computer C via the drive circuit 29. The loom control computer C instructs demagnetization of the electromagnetic on-off valves 20 to 25 based on the loom rotation angle detection information from the loom rotation angle detection rotary encoder 30.

The inserted weft yarn Y is cut by a rotary solenoid type electromagnetic cutter 31 immediately after beating. The electromagnetic cutter 31 is controlled by a loom control computer C via a drive circuit 32.

As shown in FIGS. 1 and 2, a weaving condition input device 37 is connected to the loom control computer C by signal. The weaving condition input device 37 inputs and sets the weaving conditions such as the rotation speed of the loom, the weft density, and the weaving width to the loom control computer C. The loom control computer C controls the electromagnetic solenoid 1 based on the input weaving condition information.
2. Determine the respective deenergization timings of the electromagnetic on-off valves 20 to 25 and the electromagnetic cutter 31. Then, at the time of weaving, the loom control computer C excites the electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25, and the electromagnetic cutter 31 at the determined excitation / demagnetization timing. In the present embodiment, the power supplies (not shown) of the electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25, and the electromagnetic cutter 31 are the same, and the electromagnetic solenoid 1
2. The magnitudes of the voltages applied to the electromagnetic on-off valves 20 to 25 and the electromagnetic cutter 31 are all the same.

FIG. 3 is a timing chart showing an example of the respective excitation and demagnetization timings of the electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25, and the electromagnetic cutter 31. Curve E represents the flight curve of weft Y. A curve S1 represents the excitation of the electromagnetic solenoid 12, and a curve S2 represents the excitation of the electromagnetic switching valve 20.
The curve S3 represents the excitation of the solenoid on-off valve 21, and the curve S4 represents the excitation of the solenoid on-off valve 22. Curve S5 is the solenoid valve 23
, And the curve S6 represents the excitation of the solenoid on-off valve 24. A curve S7 represents the excitation of the solenoid on-off valve 25, and a curve So
Represents the excitation of the electromagnetic cutter 31.

The loom control computer C has a display device 33
Are signal connected. As shown in FIG. 2, the display device 33 serving as a display means includes a number calculation circuit 34, a display control circuit 35, and a display screen 36. The number calculation circuit 34
The electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25, and the electromagnetic cutter 31 determined by the loom control computer C
Based on the information on the respective excitation and demagnetization timings, the number of excitations of the electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25, and the electromagnetic cutter 31 within the rotation angle range [θn, θn + 1] during one rotation of the loom is calculated. n of θn and θn + 1 is 0 and a positive integer, and the maximum integer of n is, for example, 30. Each of the rotation angle ranges [θn, θn + 1] has the same width, and when the maximum integer of n is 30, the width of each rotation angle range [θn, θn + 1] is 12 °. θ0 is 0 °
And θ1 is 12 °. θ29 is 348 °,
θ30 is 360 ° (= 0 °).

The display control circuit 35 displays the result calculated by the number calculation circuit 34 on a display screen 36. The horizontal axis on the display screen 36 represents the loom rotation angle, and the vertical axis represents the number of excitations. A polygonal line G on the display screen 36 represents an example of a change in the number of excitations. When the weft insertion error detector 17 detects that the weft has not arrived and outputs a weft insertion error detection signal to the loom control computer C, the loom control computer C stops the operation of the loom drive motor M, and the electromagnetic solenoid 12, the electromagnetic The excitation / demagnetization control of each of the electromagnetic actuation means of the valves 20 to 25 and the electromagnetic cutter 31 is stopped. Further, the loom control computer C outputs a display command to the display control circuit 35, and the display control circuit 35
Displays the change in the number of excitations on the display screen 36 based on a display command from the loom control computer C.

In the first embodiment, the following effects can be obtained. (1-1) A state in which the main nozzle 15 for weft insertion or the auxiliary nozzles 161 to 164 for weft insertion does not eject at a predetermined timing causes a weft insertion error. Weft insertion main nozzle 15 or weft insertion auxiliary nozzles 161 to 164
May not be ejected at a predetermined timing, when the voltage applied to the weft insertion main nozzle 15 or the weft insertion auxiliary nozzles 161 to 164 is lower than a predetermined voltage. The voltage drop occurs when the voltage application timings for a plurality of electromagnetic actuation means overlap, and the greater the number of such electromagnetic actuation means with overlapping voltage application timings, the greater the voltage drop.

In the present embodiment, the number of electromagnetic actuation means whose voltage application timings overlap is displayed on the display screen 36. That is, the electromagnetic solenoid 12, the electromagnetic on-off valves 20 to
The overlap of the operation time zones of the electromagnetic cutter 25 and the electromagnetic cutter 31 is displayed by the number of excitations corresponding to the loom rotation angle. For this reason, a voltage drop is suggested by the display of the number of excitations on the display screen 36 as one possible cause of the weft insertion error.
Therefore, by examining the magnitude of the actual voltage drop or the operating status of the solenoid on-off valves 20 to 24, it can be quickly grasped whether or not the cause of the weft insertion error is due to the voltage drop. (1-2) If the time length of the overlap between the operation timings of the electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25, and the electromagnetic cutter 31 is large, the influence of the voltage drop increases. The display of the number of excitations of the electromagnetic actuation means corresponding to the loom rotation angle is convenient for grasping the degree of overlap in terms of the time length of the operation timing of each electromagnetic actuation means. (1-3) The voltage drop increases as the number of excitations of the electromagnetic means increases. Therefore, the number of excitations of the electromagnetic actuation means is appropriate as a voltage drop reflecting element. (1-4) When the weft insertion error detector 17 which is an emergency stop signal output means outputs a weft insertion error detection signal which is an emergency stop signal, the loom control computer C displays a display of the number of excitations of the electromagnetic moving means. Command 35. The configuration in which the number of excitations, which is a voltage drop reflecting element, is displayed at the time of an emergency stop of the loom due to the occurrence of a weft insertion error is such that the emergency stop of the loom due to the occurrence of a weft insertion error is caused by a drop in the voltage applied to the electromagnetic operating means. This is convenient for quickly determining whether or not there is a problem. (1-5) The configuration for calculating the number of excitations based on the timing of excitation and demagnetization of the electromagnetic drive means determined by the loom control computer C from the information on the weaving conditions is cumbersome, such as inputting information on the number of excitations for displaying the number of excitations. Eliminate work. (1-6) In the jet loom, electromagnetic actuation means such as an electromagnetic on-off valve and an electromagnetic solenoid are used more frequently than other types of looms. The present invention is suitable for application to a jet loom using many electromagnetic actuation means.

Next, a second embodiment of FIG. 4 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. The display device 38 in this embodiment includes a voltage calculation circuit 39, a display control circuit 40, and a display screen 36. The voltage calculation circuit 39 includes an electromagnetic solenoid 12 determined by the loom control computer C and an electromagnetic on-off valve 20.
25 and the rotation angle range during one rotation of the loom [θn, θn + 1
] Is calculated. This applied voltage is obtained by subtracting the expected voltage drop from the rated applied voltage. The display control circuit 40 displays the result calculated by the voltage calculation circuit 39 on the display screen 36. The horizontal axis on the display screen 36 represents the loom rotation angle, and the vertical axis represents the voltage. A polygonal line V on the display screen 36 indicates an example of a change in applied voltage. When the weft insertion error detector 17 outputs a weft insertion error detection signal,
The loom control computer C instructs the display control circuit 40 to display the applied voltage.

The expected voltage drop can be easily obtained by measuring in advance an experiment. The expected voltage value obtained by subtracting the expected voltage drop obtained in this manner from the rated voltage value reflects the voltage actually applied to the electromagnetic solenoid 12, the electromagnetic switching valves 20 to 25, and the electromagnetic cutter 31 with high accuracy. I do. Therefore, the applied voltage obtained by subtracting the expected voltage drop from the rated voltage value is suitable as a voltage drop reflecting element.

Next, a third embodiment of FIG. 5 will be described. The same components as those in the first and second embodiments are denoted by the same reference numerals. Display device 41 in this embodiment
Comprises a number calculation circuit 34, a voltage calculation circuit 39, a display control circuit 42, and a display screen 36. Number calculation circuit 34
Is within the rotation angle range [θn, θn + 1] during one rotation of the loom based on the information on the electromagnetic demagnetization timing of the electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25 and the electromagnetic cutter 31 determined by the loom control computer C. Solenoid 12, electromagnetic on-off valves 20 to 25 and electromagnetic cutter 3
The number of excitations in 1 is calculated. The voltage calculation circuit 39
The electromagnetic solenoid 12, the electromagnetic on-off valves 20 to 25, and the electromagnetic cutter 31 determined by the loom control computer C
The applied voltage in the rotation angle range [θn, θn + 1] during one rotation of the loom is calculated based on the information of each excitation demagnetization timing. This applied voltage is an expected voltage obtained by subtracting an expected voltage drop from the rated applied voltage. The display control circuit 42 includes a number calculation circuit 34 and a voltage calculation circuit 39.
Is displayed on the display screen 36. The horizontal axis on the display screen 36 indicates the loom rotation angle, one vertical axis indicates the number of excitations, and the other vertical axis indicates the voltage. Display screen 36
The upper polygonal line G represents a change in the number of excitations, and the polygonal line V represents an example of a change in the applied voltage.

When the weft insertion error detector 17 outputs a weft insertion error detection signal, the loom control computer C instructs the display control circuit 42 to display the number of excitations and the applied voltage. In this embodiment, the same effects as in the first and second embodiments can be obtained. Further, the configuration in which the number of excitations and the applied voltage are displayed together makes it easy to recognize a voltage drop as one of the possible causes of weft insertion error based on the correspondence between the number of excitations and the applied voltage.

Next, a fourth embodiment shown in FIG. 6 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. The display device 43 in this embodiment includes a voltage detector 4 electrically connected to the drive circuits 13, 29, and 32.
4, 45, 46, a display control circuit 47, and a display screen 36.
Consists of The voltage detector 44 detects the voltage applied to the electromagnetic solenoid 12, and the voltage detector 45 detects the voltage applied to the electromagnetic on-off valve 2.
The voltage applied to the electromagnetic cutter 31 is detected by detecting the voltage applied to 0 to 25.

When the weft insertion error detector 17 outputs a weft insertion error detection signal, the loom control computer C instructs the display control circuit 47 to display the detected voltage for one rotation of the loom when the weft insertion error occurs. I do. The display control circuit 47 displays the detected voltage for one rotation of the loom when the weft insertion error occurs on the display screen 36. The horizontal axis on the display screen 36 represents the loom rotation angle, and the vertical axis represents the voltage. A curve Vx on the display screen 36 represents an example of a detected voltage change.

Voltage detectors 44 and 4 serving as voltage detecting means
The voltage value detected by 5, 5 is an actually measured value of the voltage applied to the electromagnetic driving means, and such an actually measured voltage value is optimal as a voltage drop reflecting element.

In the present invention, the following embodiments are also possible. (1) Normally, the power consumption of the electromagnetic cutter 31 is, for example, about three times the power consumption of the electromagnetic on-off valves 20 to 25. Electromagnetic actuation means with high power consumption results in a larger voltage drop than electromagnetic actuation means with low power consumption. Therefore, the number of excitations of one electromagnetic cutter 31 having large power consumption is determined by, for example, the electromagnetic on-off valves 20 to 25 having small power consumption.
The number of excitations may be displayed by weighting them so that they correspond to three. Such weighted excitation number display is effective in properly grasping the magnitude of the voltage drop. (2) In the fourth embodiment, when the detected applied voltage is lower than a preset reference value, a warning is issued even during weaving. (3) In the first to third embodiments, the excitation number information or the applied voltage information is input to the display device by an operator's input operation, and the input excitation number information or the applied voltage information is used to generate a weft insertion error. The display should be based on the emergency stop of the loom due to. (4) A voltage drop reflecting element is displayed based on an emergency stop of the loom due to a cause other than the occurrence of a weft insertion error. (5) The present invention is applied to a loom that uses a plurality of electromagnetic operating means other than the jet loom. (6) In the first to third embodiments, the number of excitations and the voltage are calculated by the loom control computer C, and the calculation results are displayed on the display device. (7) In the first to fourth embodiments, not only when the loom is stopped, but also the operation is arbitrarily displayed by an operator during operation.

The inventions other than those described in the claims which can be grasped from the above embodiment will be described below together with their effects. (1) The operation display device of the electromagnetic actuation means in the loom according to claim 3, wherein the number of excitations of the single electromagnetic actuation means is expressed with a weight corresponding to the amount of current supplied to the electromagnetic actuation means.

The weighted number display is effective for appropriately grasping the magnitude of the voltage drop.

[0037]

As described above in detail, according to the present invention, the display for displaying the voltage drop reflecting element reflecting the drop of the voltage applied to the plurality of electromagnetic actuation means during operation in accordance with the loom rotation angle. Since the operation display device of the electromagnetic actuation means having the means is constituted, an excellent effect of being able to recognize the drop of the applied voltage as one of the causes of the occurrence of the abnormality during weaving and to promptly cope with the occurrence of the abnormality. Play.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a weft insertion device.

FIG. 2 is a control block diagram.

FIG. 3 is a timing chart showing excitation and demagnetization timings of an electromagnetic actuating means.

FIG. 4 is a control block diagram showing a second embodiment.

FIG. 5 is a control block diagram showing a third embodiment.

FIG. 6 is a control block diagram showing a fourth embodiment.

[Description of Symbols] 12: an electromagnetic solenoid serving as electromagnetic actuation means, 15: a main nozzle for weft insertion, 161 to 164 ... an auxiliary nozzle for weft insertion, 17 ... a weft insertion error detector serving as an emergency stop signal output means, 20 to 20 25: electromagnetic on-off valve serving as electromagnetic actuation means, 31
... Electromagnetic cutter as electromagnetic actuation means, 33, 38, 4
1, 43: display device serving as display means, 44, 45, 46
... A voltage detector serving as voltage detection means.

Claims (6)

[Claims] At least two of a plurality of electromagnetic actuation means.
In a loom that is used so that the operation time periods partially overlap, a voltage drop reflecting element that reflects a voltage drop state applied to the plurality of electromagnetic operating means during operation is displayed in accordance with the loom rotation angle. Operation display device of an electromagnetic actuation means in a loom provided with a display means to perform the operation. 2. The operation display of an electromagnetic operating means in a loom according to claim 1, wherein said display means displays the number of excitations of said electromagnetic operating means as a voltage drop reflecting element. 3. The display means reflects an expected voltage value obtained by subtracting an expected voltage drop based on operating states of the plurality of electromagnetic actuation means from a rated voltage value applied to all the electromagnetic actuation means. The operation display device of the electromagnetic actuation means in the loom according to claim 1, which is displayed as an element. 4. The apparatus according to claim 1, further comprising voltage detecting means for detecting a voltage applied to said electromagnetic actuating means, wherein said display means displays the voltage value detected by said voltage detecting means as a voltage drop reflecting element. Operation display device of the electromagnetic actuation means in the loom. 5. The voltage drop reflecting element according to claim 1, wherein the display means displays the voltage drop reflecting element based on an output of an emergency stop signal of an emergency stop signal output means for making an emergency stop of the loom. An operation display device of an electromagnetic actuation means in the loom described in the above. 6. The weaving machine is a jet loom for weft insertion by a weft insertion main nozzle and a weft insertion auxiliary nozzle, and the electromagnetic operating means includes a weft insertion main nozzle and a weft insertion nozzle. The operation display device for an electromagnetic actuation means in a loom according to any one of claims 1 to 5, wherein the operation device is an electromagnetic opening / closing valve that switches between supply and stop of air supply to the auxiliary nozzle.