JP2001208599A - Wind-up device with quantitative metering equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem where a rapid change occurs during metering for obstructing quantitative metering, and metering accuracy deteriorates when winding up string that has been set to a wind-up device with quantitative metering equipment in advance by a string package to obtain a specific amount. SOLUTION: The quantitative metering device that has a device for winding up string by a string package for obtaining the string package with target weight is provided with a means for setting the value of the allowed amount of change in weight for winding up the string with a capacity within tolerance, a target weight- setting means, a means for setting the amount of change in weight of the string where the amount of change of the string being metered decreases within the allowed amount of change in weight as a weight value, a means for making the amount of change in weight invalid when the amount of change in weight exceeding the allowed amount of change in weight occurs, a means for adding the difference in the weight value that has occurred at that timing up to a point immediately before as an integration value when the amount of change in weight exceeding the allowed amount of change in weight occurs, starting metering when the amount of change in weight is within the allowed amount of change in weight, and ending metering when the integration value matches a target weight value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for quantitatively winding a yarn, which is provided with a measure when an abnormal change in weight value occurs during winding.

For quantitative measurement of a yarn to be wound around a fixed amount of yarn package, a quantitative value is stored in advance in a memory of a measuring machine, and a weight change amount of the remaining yarn and a predetermined amount value stored in the measuring machine are determined. There is known a weighing machine which stops the winding of the yarn when a weight change amount of the remaining yarn matches a predetermined amount value stored in the weighing machine to obtain a fixed amount of yarn package.

[0003]

In order to obtain a fixed amount of yarn package with such a weighing machine, it is usually necessary to initially increase the amount of winding yarn to be prepared to a value larger than a predetermined amount. In other words, the amount of the yarn on the supply side is prepared several times larger than the predetermined amount of the yarn on the winding side, and a number of winding yarns are obtained therefrom. If the winding operation is started by first preparing an amount of yarn less than the predetermined amount to be wound, the yarn on the supply side becomes empty during weighing, and the winding must be interrupted. If the supply side yarn runs out while winding the yarn into a plurality of yarn packages by a predetermined amount in this manner, winding must be stopped and a new winding yarn must be set based on the winding. Means of stopping and recording of the amount of winding at the time of winding stop,
It is necessary to improve the equipment in cases where the work such as setting a new winding thread and splicing, weighing and restarting a new winding thread is complicated and burdens the operator, and winding and weighing is interrupted halfway. Was rare.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to wind a yarn installed outside a weighing machine from a supply-side yarn placed on a weighing machine mounting table. A permissible weight change per unit time for rewinding a yarn with a capacity within an allowable range in a yarn winding device with a yarn quantitative measuring device that rewinds the yarn on a bobbin of the device and obtains a yarn package of a target weight. And a predetermined amount value setting means for presetting a value of a predetermined amount as a target weight, and a weighing means for sequentially measuring the amount of reduction of the yarn. Means for measuring the weight change amount of the yarn which decreases by a certain amount as a weight value, means for invalidating the weight change amount when a weight change amount exceeding the allowable weight change amount occurs, and When a weight change that exceeds At the timing when the weight change occurs, the weight that has changed within the allowable weight change, that is, the weight value from the weight value at the start of weighing to immediately before the weight change amount exceeding the allowable weight change amount described above occurs. Means for adding the subtracted value as an integrated value, means for starting weighing as the weight value at the start of weighing when the weight change amount becomes within the allowable weight change amount, and A means for outputting a signal indicating the end of weighing when the value of matches the value of the predetermined amount.

[0005] A second feature is that, in such a winding device with a quantitative measuring device, the amount of weight change of the yarn, which decreases by a certain amount within the allowable weight change during weighing, is less than the value within the above allowable weight change amount. When there is no change in the weight of the yarn for a certain period of time, a means for outputting a signal indicating an abnormality in weighing is provided.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a quantitative weighing apparatus according to an embodiment of the present invention.
FIG. 1 shows one embodiment of the present invention, and is a view showing the concept of an apparatus for winding a winding thread placed on a balance into another bobbin. Reference numeral 1 denotes a weighing machine, and 2 denotes a supply-side winding thread, which is set on the weighing machine 1 while being wound around a bobbin 3. Reference numeral 4 denotes a yarn being wound, 5 denotes a guide roller, 6 denotes a yarn package, 7 denotes a winding drive unit, 8 denotes a controller, and 9 denotes a setting operation unit for issuing commands for various settings and operation measurement start. is there. FIG. 2 is a graph showing a normal operation state.

In FIG. 1, which is an embodiment of the present invention, a winding device for obtaining a predetermined amount of a yarn package, the yarn being first wound on the yarn package by the amount of the supply side winding yarn 2 placed on the scale. The description will be made on the assumption that the amount is larger.
First, when the winding operation is started in this state, the winding thread 2 placed on the balance naturally becomes empty first. So controller 8
Outputs a signal notifying the abnormality of the weighing that the weighing signal indicates that the amount of change in the weight of the yarn is not recognized in a certain period. Then, based on the signal, a signal for stopping the winding operation is output directly, the amount of the yarn wound up to this point is measured as a weight by the weighing machine 1, and the value is stored in the storage unit. Then, the operator removes the empty bobbin 3 on the weighing machine 1, places the bobbin 3 on which a new thread has been wound, connects the thread to the previous thread, starts the winding operation again, and at the same time up to that point. The weight value of the winding thread is input to the storage unit and added as an integrated value. The above operation and operation are repeated until the integrated value reaches a predetermined amount.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in more detail with reference to FIGS. First, in the configuration of FIG. 1, a description will be given of a change in the winding yarn over time when the operation is started. In FIG. 2, the vertical axis represents the weight value, and the horizontal axis represents the passage of time. First, the point at which the current value is reset and started is defined as point a, and the weight W7-W
1 has been measured. The operation is started with this point of time as to. The winding yarn 2 on the weighing machine is wound on the winding yarn 6 by the winding driving device 7, and the weight of the winding yarn on the weighing machine starts to decrease temporarily. The controller 8 starts the weighing operation.
And it reaches point b. The weight W of the yarn wound at this time
a is W7-W6. Although the point b does not always exist, for example, it is assumed that the weight value has changed from the point b to the point C2 between t1 and t2 during winding, for some reason. Originally, it should be temporarily reduced from the point b to the point C between t1 and t2, but in this example, it changes rapidly. Therefore, as means for detecting the amount of change, a certain range is provided for the change in weight per unit time, and the above-mentioned amount of change is detected depending on whether the change exceeds this range or remains within the range. The value that determines this range is represented by the allowable weight change amount Wp, and extends from point b to point C1 between t1 and t2. The allowable weight change Wp in this case is W
6-W5. In this example, since there is a steep slope from point b to C2 between t1 and t2, the allowable weight change W
The weight measured from t1 to t2 on the assumption that a change exceeding p has occurred is canceled so as not to affect the quantitative measurement. When the winding amount per unit time again falls within the allowable weight change amount, the measurement is continued. It is also possible to take measures to temporarily stop the winding device due to the sudden change in the load. And the amount W of the yarn wound up to this point
a is stored. This value is the amount of W7-W6. Next, from t2 to t3, the winding operation is stopped and no change in weight occurs. Accordingly, the weighing operation is stopped because the weight does not change during this time.

Therefore, the cause of the sudden change in the load will be investigated. In this example, when the winding bobbin 3 is first placed on the weighing machine 1, the cap or the like attached to the winding bobbin 3 is removed. It is assumed that the device is placed at the weighing machine and drops from the weighing machine mounting table 1-1 due to, for example, vibration. Then, it is determined that the cause of the sudden change in the load is the drop of the cap, and the operation is restarted on the assumption that the operation does not directly hinder the operation. This point is the restart point at point d. Then, the weighing is started again, and the amount of the winding yarn 2 on the weighing machine 1 is reduced for a while and reaches the point e, and this time is defined as t4. Again, the indication of the weighing machine changes and t
At point 5, the point f was reached. In this case, the load suddenly increases, and the weighing operation is stopped again.
The weight Wb of the yarn wound between t3 and t4 due to this sudden change becomes W4-W2, and this value is added to the previously stored value and stored. If it is assumed that the cause of the stop is, for example, that something has been artificially placed on the platform 1-1 of the weighing machine, the operation is performed without removing the object placed on the platform 1-1. If there is no direct problem, the metering operation is restarted at the same time as the operation is restarted.
This point is referred to as point d. The operation was further continued to reach point g, and no change in weight occurred at time t7, and the winding operation was stopped again. It is determined that there is no weight change at least up to the point C at the time t8, and the operation is stopped.

[0010] Then, it is found that the cause is that the winding thread 2 placed on the weighing machine 1 is initially empty, and a new winding thread (not shown) is provided from time t8 to time t10. Is set and the point i is reached. That is, the empty bobbin is first removed from the time point t8. The instruction of the weighing machine 1 at this time indicates a zero point. When a new winding thread (not shown) is set at time t9, the load on the weighing machine 1 rapidly increases to point i. This time is defined as t10. The weight W of the yarn wound between t6 and t7 due to this sudden change in load
c is added to the previously stored value and stored.
Therefore, if the current indicated value of the weighing machine 1 is W9, the weight of the new winding thread is W9-W1. Continued t
The time elapses at 11, the point d is reached, and a restart is started.
Then, the operation reached a point j and the operation was stopped. This operation stoppage is stopped because the amount of the yarn package reaches a predetermined amount. The predetermined amount in this example is Wa + Wb + Wc + Wd
It has become. The weight change Wd on the weighing machine 1 from the time t11 to the time t12 is W9-W8, and is changed from W9 to W8.
Is added to the previous stored value as Wd, and the total added value is compared with a predetermined amount, and the added value =
This indicates that the weighing operation is stopped when the predetermined amount is reached, and the winding operation is stopped. t7
The reason why the weight does not change at point g in the above is that the winding yarn 2 on the supply side is emptied, but another cause may be a case where the winding yarn breaks and cannot be wound. Even in such a case, since the weight does not change, a signal (for example, an abnormal signal) for stopping the winding device can be output to the outside.

In this way, when a weight change equal to or less than the allowable weight change occurs or the weight change does not occur during the period from the first operation start to reaching the predetermined amount, a measurement abnormality is notified. If a weight change exceeding the allowable weight change occurs, the weighing operation is stopped at that point, and the sudden weight change is canceled and not added as a weighed value. Actually, the change in weight of the weighing machine 1 in the winding device for a lightweight object such as a thread is small. Since this minute change fluctuates within the range of the allowable weight change amount set therein, an optimum value of the allowable weight change amount must be found and set in consideration of the fluctuation range.

Next, a main configuration of an embodiment of the present invention will be described with reference to a block diagram. As shown in FIG. 3, the present invention is roughly divided into eight blocks. 2
1 is a weighing unit, 22 is an A / D converter, 23 is a calculation / control unit, 24 is a display unit, 25 is a signal output unit, 26 is a storage unit (memory), and 27 is a power supply unit. Constructs a controller. The weighing unit 21 in the block diagram of FIG. 3 corresponds to a scale of 1 in FIG. 1. In this figure, the weighing unit 21 generates a weight signal proportional to the load, and the A / D converter 22 generates a digital weight signal. And sent to the arithmetic and control unit 23. Here, calculation of weight value, comparison with a predetermined amount value, calculation of determination and the like, control of input / output data from each connection unit are performed, and the results are displayed on a display unit 24, and a signal output unit 25 is provided. Is to output a signal notifying that a fixed amount has been obtained or a signal to stop driving to the external winding drive unit 7 when a value exceeding the allowable weight change amount is detected.

The storage section 26 has a predetermined amount register 26a, an integrated value register 26b, and a change amount register 26c as predetermined value setting means for setting a predetermined amount as a target weight in advance. Further, when a weight change exceeding the allowable weight change occurs, a graph 26d outside the allowable change as means for invalidating the weight change, a weighing start weight register 26e, a weight value shift register 26f, and a capability of the allowable range. The allowable change amount register 26g and the read count register 26 as allowable weight change amount setting means for setting a value of an allowable weight range per unit time for discharging the yarn at
h, having at least a weight storage register 26i;
Before the weighing is started, a predetermined range of the change amount is input to the allowable change amount register 26g as the allowable weight change amount from the setting operation unit 9 and the weighing value to be weighed is stored in the predetermined amount value register 26a. That is, it is assumed that the predetermined value is input from the operation unit 9 in advance. It is assumed that a weighing start switch 28 is prepared in the setting operation unit 9.

FIG. 4 shows a flowchart of an embodiment of the present invention, and the operation will be described with reference to this flowchart. First, the weighing start switch 28 of the setting operation unit 9 is operated to enter an operation of inputting a weighing start signal from the operation unit 1;
Then, in step 2, a process before reading the weight is performed.
That is, the weight of the supply side winding yarn 2 is measured by the weighing start weight register 2.
6e and the weight value shift register 26f. The weight value shift register 26f stores at least two weight values. One is a weight value previously read and the other is a weight value.
One is the current weight value obtained by sequentially updating the read weight value with new data. Next, the graph 26d outside the permissible change amount is
First, the integrated value register 26b is cleared to zero, the read count register 26h is reset, the weight value is stored in the weight value storage register 26i, and the process proceeds to step S3. In S3, the weight value is read and stored in the weight value shift register 26f, and the process proceeds to step S15 to start the operation. Here, when the winding device is started to start rewinding the yarn, the winding yarn 2 on the supply side undergoes a weight change, and the process proceeds to step S4. In S4, the new weight value stored in the weight value shift register 26f is replaced by one. The arithmetic and control unit 23 compares the previously sampled weight value with the weight value. If the difference is smaller than the value of the previously stored allowable change amount register 26g, the process proceeds to step S5. In S5, it is confirmed whether or not the graph 26d outside the allowable change amount is ON.
If N has not been reached, the process proceeds to step S6, where the change in weight value from the start of weighing is stored and updated in the change amount register 26c in S6. Then, the count of the counter of the read count register 26h is increased by one. Subsequently, the process proceeds to step S11. Next, in S11, it is confirmed whether or not the read count register 26h overflows. The read count register 26h is a counter that generates an overflow every certain period, and generates an event of monitoring whether or not the supply-side winding is making an appropriate weight change every time the overflow occurs. If no overflow has occurred, step S
Go to 7. In step S7, the arithmetic and control unit 23 compares whether the sum of the change amount register 26c and the integrated value register 26b matches the predetermined amount value register 26a, and if not, returns to S3 and returns to S3, S4, S5. , S6,
Loop until the quantification is obtained in the order of S11 and S7. When the sum of the change amount register 26c and the integrated value register 26b matches the predetermined amount value register 26a, the process proceeds to step S10, and a signal indicating the end of weighing is output from the signal output unit 25. The relay circuit of the control device is operated, the power supply to the motor is cut off, the winding device is stopped, and the yarn package 6 having a predetermined weight is obtained.

Up to this point, there is no case where an abnormal change in weight occurs during the weighing. For example, when the weight value of the object to be weighed changes suddenly, the weight value shift register 26f is set in S4.
And the weight value at the previous sampling is compared by the arithmetic and control unit 23. If the difference is larger than the value of the allowable weight change amount register 26g, an abnormality of the weighing is notified. A signal output means, for example, a buzzer is operated, and the process proceeds to step S8. In S8, the change amount register 26 updated in S6
The value of c is added to the integrated value register 26b, and the change amount register 26c is cleared to zero. Next, the flag outside the allowable weight change amount is turned on, the read count register 26h is reset, and the process returns to S3. If the weight of the balance remains unstable, the process of S3, S4 and S8 is looped,
Unnecessary weight values for quantitative weighing are canceled. Then, when the weight becomes stable and ready to be weighed, that is, in S4, the difference between the new weight value of the weight value shift register 26f and the weight value obtained when sampling is performed immediately before is the value of the allowable weight change amount register 26g. When it becomes smaller, weighing is restarted, and the process proceeds from S4 to step 5. In step 5, since the flag outside the allowable weight change amount is ON, the process proceeds to step 9, and S
In step 9, the weighing value at which weighing was restarted is stored in the weighing start weight register 26e, and the flag 26d outside the allowable weight change amount is set to OF.
To F and proceed to step 7, then S7, S3, S4, S
The process proceeds to 5, S6, S11 and S7, and loops until a fixed amount is obtained. When the amount reaches the fixed amount, the process proceeds from step S7 to step 10 and outputs a stop signal. Further, when the weight change of the object to be weighed does not occur for some reason, the flow proceeds to step 12 at the timing when the reading count register 26h overflows in S11 and the stored weight value and S3
Compare with the weight value read in to check if there is a change in the weight value. If there is a change, it is determined to be normal and the process proceeds to step 13, the reading count is reset, and the weight value read in S3 is stored in the storage register 26i.
Update and proceed to S7. However, if there is no change in the weight value, it is determined that there is an abnormality, and the process proceeds to step S14.
A loop to return to is executed.

[0016]

According to the present invention, the value of the permissible weight change per unit time for rewinding the yarn with the capability within the permissible range is set in advance, and the weight change of the yarn which decreases by a fixed amount is set. When weighing is performed by weighing only the amount and a change in weight exceeding a certain amount occurs, for example, when a weight change exceeding a certain amount occurs, such as when an operator removes a bobbin that has lost thread or replenishes a new winding thread. , The change is canceled so that it does not affect the quantitative measurement, and a change exceeding the allowable weight change occurs, and the value (weighing value) that has changed within the allowable weight change is accumulated. Since the values are stored as values, there is no need to manually read and input the weighed values so far as the addition is performed as in the conventional case, and no input error occurs. Further, even if the weighing machine receives a shock from the outside temporarily, the weight change due to the shock is automatically canceled, so that there is an advantage that the value of the weight change does not become a weighing error. In addition, even when the quantity of the weighed object to be weighed is relatively large and the weighing is repeated multiple times to obtain a fixed amount, the operator only needs to supply a new weighing object and perform the weighing operation. There is an effect that the operation load can be reduced without causing weighing errors even if the user is not an expert. On the other hand, during the weighing, when the weight change that decreases by a certain amount within the allowable weight change is constant, and when the weight change of the object to be weighed is not recognized, a signal indicating the abnormality of the weighing is output. For example, it is possible to automatically stop the winding operation, for example, as a broken or no thread, and issue an alarm to the operator to immediately perform the treatment, thereby improving the operation rate. Further, the effect of reducing the cost by omitting the yarn break detector of the winding device can be expected.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an apparatus for winding a fixed amount of winding yarn according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an operation state of the apparatus shown in FIG. 1 according to one embodiment of the present invention.

FIG. 3 is a block diagram showing a main configuration of an embodiment of the present invention.

FIG. 4 is a flowchart illustrating the operation of another embodiment of the present invention.

[Description of numbering]

DESCRIPTION OF SYMBOLS 1 Measuring machine 2 Supply side winding thread 3 Bobbin 6 Thread package 7 Winding drive section 8 Control section 9 Setting operation section 21 Metering section 22 A / D converter 23 Calculation / control section 24 Display section 25 Signal output section 26 Storage section 27 Power supply unit 28 Weighing start switch a Initial start point b Point of occurrence of negative change exceeding allowable weight change,
Stop weight detection c Virtual point of weight change from t1 to t2 during normal operation c1 Virtual point of allowable weight change c2 Winding stop point d Restart point e Point of occurrence of positive change exceeding allowable weight change f f winding Take-up stop point g The point at which the winding thread on the scale ends i The end point of the replacement of the winding bobbin j The take-up stop point by a predetermined amount W0 Zero point of the weighing machine Wa The weight change from the weight of the first winding thread 2 to the weighing machine suddenly Wb Weight of the second winding amount, the weight from point d to point e at t3 Wc Weight of the third winding time, weight from point d to point g at t6 Wd after replacement Amount from the start of winding with a new winding thread until it stops at a predetermined amount Wp Allowable weight change

Claims (2)

[Claims] 1. A yarn package having a target weight is re-wound from a supply-side winding thread placed on a platform of a weighing machine to a bobbin of a yarn winding device installed outside the weighing machine. In a winding device with a quantitative measuring device for a yarn, an allowable weight change amount setting means for setting a value of an allowable weight change amount per unit time for winding the yarn with a capability within an allowable range; A predetermined amount value setting means for presetting a predetermined amount of value, and a measuring means capable of sequentially measuring the decreasing amount of the yarn, wherein the weight change amount of the yarn which decreases by a certain amount within the allowable weight change amount is defined as a weight value. Means for weighing, means for invalidating the weight change when the weight change exceeds the allowable weight change, and means for invalidating the weight change when the weight change exceeds the allowable weight change Within the allowable weight change at the timing when Means for adding, as an integrated value, a value obtained by subtracting a weight value immediately before a weight change amount exceeding the allowable weight change amount from the weight value at the start of weighing, that is, a weight value at the start of weighing, Means for starting the weighing as the weight value at the start of weighing when the amount falls within the permissible weight change amount, and outputting a signal indicating the end of weighing when the integrated value matches the value of the predetermined amount. And a winding device with a quantitative measuring device. 2. The weight change amount of the yarn, which decreases by a certain amount within the allowable weight change amount during weighing, is equal to or less than the value within the allowable weight change amount, and the weight change amount of the yarn is recognized for a certain period of time. 2. The winding device with a quantitative meter according to claim 1, further comprising means for outputting a signal indicating a measurement abnormality when there is no measurement.