KR100549348B1 - Automatic control apparatus for winding optical fiber on a spool and methdo using it - Google Patents

Abstract

According to the present invention, a take-up part including a pay-off part, a PT spool which draws out the optical fiber wound on the spool of the pay-off part and measures the tension, and then rewinds it, and a winding of the optical fiber wound on the PT spool of the take-up part. Speed feedback section for measuring the speed. And a traverse part for guiding the optical fiber to wind the optical fiber evenly on the outer circumferential surface of the PT spool by reciprocating in the longitudinal direction on the PT spool of the take-up part, and a controller for controlling the traverse part. An automatic control apparatus, which is guided by a linear reciprocating motion of the traverse part, winds an optical fiber on a predetermined rotating PT spool, and measures the speed change amount of take-up at both ends of the spool during the process, Comparing and determining the speed change amount, and if the take-up speed change amount is out of the range of the predetermined speed change amount, the process of determining the poor winding of the dents or piles on the PT spool, and controlling the operation of the traverse unit to control the PT spool Of eliminating defective winding of the jacket and the above process And later restoring the traverse operation to the normal winding state.

Fiber Optic Extractor, Take-Up, Pay-Off, PT Spool, Traverse

Description

AUTOMATIC CONTROL APPARATUS FOR WINDING OPTICAL FIBER ON A SPOOL AND METHDO USING IT}

1 is a block diagram showing an optical fiber winding apparatus according to the prior art;

2 is a view showing the speed control of the take-up part according to the prior art;

3 is a block diagram showing a configuration of a take-up unit according to the prior art;

4 is a diagram generally illustrating a process in which an optical fiber is wound around a spool;

FIG. 5 is a graph repeatedly recording take-up dancer displacement and take-up speed change each time the optical fiber increases by one layer on the PT spool; FIG.

Fig. 6 is a diagram showing an example of optical fiber defect winding on a PT spool.

Figure 7 is a block diagram showing an automatic optical fiber winding apparatus according to the present invention.

8 is a graph showing a change in take up speed during optical fiber winding in accordance with the present invention;

9 is a schematic diagram showing fluctuations in left spool speed during normal winding and bad winding;

10 is a graph showing a change in take-up speed at the time of poor winding compared to FIG. 9;

11 is a view showing a process for eliminating a defective winding according to the movement position correction of the traverse unit according to the present invention; And

12 is a view showing a bad winding removal process according to the movement speed correction of the traverse unit according to the present invention.

The present invention relates to an optical fiber winding apparatus for rewinding a wound optical fiber after being drawn out from an optical fiber base material for tension evaluation and the like. An automatic control device and a winding method using the same to prevent defects in advance and perform a smooth winding operation.

In the optical fiber drawing operation, the optical fiber produced from the optical fiber base material is usually wound by one or two spools. PT (Proof Test) is a facility that performs constant tension evaluation and rewinds to a certain length at the same time.

1 is a block diagram showing an optical fiber winding apparatus according to the prior art.

In the conventional PT, a device for winding an optical fiber mounts a spool of the drawn optical fiber to a pay-off unit 10 and inputs an input capstan 13 and an output capstan 23. Evaluate the constant tension of the optical fiber between the two capstans (13, 23) while passing through) and wound the completed optical fiber in a separate PT spool (21) in the take-up (20) to a certain length End of winding. At this time, the optical fiber is guided and moved to the traverse portion (Traverse) 30 that moves between both ends of the PT spool (21).

2 is a view showing the speed control of the take-up part according to the prior art.

At this time, the speed of the output capstan is maintained at a constant speed when the target speed is reached.The PID of the take-up part as the input signal, the speed of the take-up part as the output signal, and the wound outer diameter of the PT spool as the bias. By control, the speed of the take-up part is controlled.

3 is a block diagram showing a configuration of a take-up unit according to the prior art. As shown in FIG. 3, the PT spool 21, in which the optical fiber in which the tension measurement is completed, is wound, rotates at a take-up speed controlled in FIG. 2 about the rotation axis, and the optical fiber is a traverse part having a predetermined guide wheel. 30) the both ends of the PT spool 21 is reciprocated and wound around the PT spool.

4 is a diagram illustrating a process in which an optical fiber is generally wound on a spool.

At this time, the method of winding the optical fiber by moving the traverse is inputted to the control program and the shape of the PT spool is entered from the origin position according to the input shape and moved by the set movement distance, and then the direction is changed [going rightward => going leftward ] Returns to the home position by the set distance. Each time the sensor returns to the home position, the fiber 1 layer increases.

5 repeatedly records the displacement of the take-up dancer and the change in take-up speed at this time. As the outer diameter increases by 1 layer, the speed decreases constantly. On the other hand, it can be seen that the displacement of the dancer is not constant during each layer. Therefore, the displacement of the dancer is difficult to use for the determination of the winding abnormality, and the use of the speed change makes it possible to easily determine the winding abnormality. The take-up speed uses a signal fed back from the driving motor in the controller.

However, in the conventional winding apparatus as described above, the winding is progressed as shown in FIG. 4, but the winding surface of the optical fiber must be wound on the outer circumferential surface of the PT spool. The shape changes due to deformation of the PT spool due to long-term use. Therefore, a problem arises that stacking or dent occurs at both ends of the PT spool due to the difference between the input PT spool shape and the PT spool shape value used for the actual winding (FIG. 6). In addition, when stacking is severely generated, a problem may occur during winding because the fiber winding control is not smooth due to an excessive amount of dancer variation, and in particular, a tension applied to the optical fiber is not constant. For example, if the tension is high, the optical fiber can dig into the wound surface and affect the optical properties.If the tension is weak, the optical fiber will stretch while winding and wound winding due to the flow rate or static electricity on the winding surface. If it is pressed or not pressed by the optical fiber during winding, it may squeeze through the gap of the optical fiber to make a loop. They are also known to affect the nonlinearity of optical fibers [1550 nm].

In addition, when the operator observes the PT spool continuously and the winding abnormality occurs, the reciprocating movement width of the traverse part must be adjusted directly to solve the winding abnormality, which increases work fatigue and limits the facility operation capability per person. In addition, there is a problem in that the loss of work due to the re-winding of the bad occurrence occurs.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic control apparatus for winding an optical fiber and a method using the same, which is configured to automatically wind an optical fiber without a defect at both ends of a PT spool.

Another object of the present invention is to determine the type of occurrence, when the winding abnormality occurs at both ends of the PT spool, the optical fiber for winding the optical fiber configured to eliminate the winding abnormality by appropriately adjusting the reciprocating movement width of the traverse portion according to the determined result The present invention provides an automatic control apparatus for winding and a method using the same.

Still another object of the present invention is to provide an automatic control apparatus for winding an optical fiber configured to automatically perform an appropriate compensation operation according to the accumulation and dent of the optical fiber wound on the PT spool, thereby increasing work efficiency and improving productivity. To provide a method used.

In order to solve the above object, the present invention provides a pull-off unit having a predetermined spool in which the optical fiber drawn from the base material is wound, and the optical fiber wound on the spool of the pay-off unit to draw tension. A take-up part having a PT spool to be wound up again after measurement, a winding-up speed feedback part for measuring a winding speed of an optical fiber wound on a PT spool of the take-up part, and a reciprocating motion in a longitudinal direction on a PT spool of the take-up part And a traverse portion for guiding the optical fiber to evenly wind the optical fiber on the outer circumferential surface of the PT spool, and measure the speed change amount of the take-up at both ends of the spool, and compare it with the speed change amount in the normal winding state, so that the winding is not wound on the PT spool. A control unit for controlling the operation of the traverse unit when the occurrence occurs to eliminate the winding failure Characterized in that.

In addition, the present invention is a take-up portion having a pay-off portion, a PT spool to take out the optical fiber wound on the spool of the pay-off portion to measure the tension, and then rewind the optical fiber wound on the PT spool A winding speed feedback unit for measuring a winding speed of the traverse unit, and a traverse unit for guiding the optical fiber to evenly wind the optical fiber on the outer circumferential surface of the PT spool by reciprocating in the longitudinal direction on the PT spool of the take-up unit; An automatic control apparatus for winding an optical fiber including a control unit for controlling the unit, comprising: winding the optical fiber on a PT spool, which is guided by a linear reciprocating motion of the traverse unit, and fed back from the motor during the process; Compare take-up speed change with preset speed change using take-up speed signal Judging a bad winding of the spool or stacking on the PT spool when the take-up speed change amount is out of a predetermined speed variation range; and controlling the operation of the traverse unit to perform a bad winding on the PT spool. It is characterized in that it comprises a process of resolving and restoring back to the initial operation of the traverse unit after the above process.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

7 is a configuration diagram showing an optical fiber automatic winding apparatus according to the present invention.

According to the configuration of the present invention, as shown in FIG. 7, a pay-off portion 10 for releasing the optical fiber, a take-up portion 20 for winding the optical fiber, and an optical fiber winding speed are controlled. It consists of the control part 50 which does.

The take-up part 20 includes a PT spool 21 for winding an optical fiber, a traverse part 30 for guiding the optical fiber while reciprocating the outer circumferential surface of the PT spool 21 along a longitudinal direction, and a PT spool. It includes a take-up dancer (22) which is a tension measuring device for controlling the speed of the take-up by using the tension generated when the winding outer diameter increases with the increase in the amount of winding. Although not shown, the PT spool is configured to rotate by a predetermined rotation means such as a drive motor. The traverse portion may also be guided to reciprocate in the longitudinal direction of at least the outer circumferential surface of the PT spool along a predetermined guide wheel.

In addition, the control unit 50 is a pull-off speed control unit 52 for controlling the speed of the pay-off (Pay-off) 10 and the tensile force of the optical fiber drawn out from the pay-off unit 10 to the take-up unit 20 An optical fiber tension test unit 53 for testing the optical fiber tension test unit 53 and a take-up speed control unit 51 for controlling the speed of the take-up unit 20 and a winding abnormality control unit for determining an optical fiber winding state and controlling a remedial action according to the determination result It consists of 54.

The control unit 50 serves to determine and resolve a winding abnormality at both ends of the PT spool by using the speed signal used for general winding as the input interest.

The basic operation according to the present invention can be divided into two types: winding state monitoring, which can observe the state of the winding and determine whether the winding is abnormal, and winding range adjustment that controls the movement width of the traverse according to the monitored winding state. .

The winding state monitoring operation is performed by a take-up speed control unit. The take-up speed control unit monitors whether a winding failure occurs in the PT spool by setting a reference speed change amount during normal winding in a predetermined winding area and comparing the set reference speed change amount with the actual winding speed change amount.

8 is a graph showing a change in take-up speed during the winding of the optical fiber according to the present invention. In comparison, the speed change width on the right side of the spool is similar to the peripheral speed change. This is because the change in the outer diameter of the winding spool due to the increase in the optical fiber layer appears only on the left side of the spool when the optical fiber 1 layer is wound as shown in FIG. 4. In addition, in the case of the right side of the spool, only a slight speed change appears according to a change in the rotation direction of the traverse part.

In Fig. 8 the variation in speed during one cycle of winding is repeated over the same pattern for every cycle. Based on this pattern, the range of the normal speed fluctuations (the fluctuation range of the speed fluctuating in the normal winding state) on the left side and the right side of the spool is determined. If the amount of winding of the PT spool increases while the machine operation speed is the same, the take-up speed decreases inversely and the normal speed fluctuation varies according to the decrease.

9 is a schematic diagram showing the variation of the left side speed of the spool during the normal winding and the poor winding, where the winding failure is determined by different methods on the left side and the right side of the spool, as shown in FIG. In normal winding, the take-up speed decreases in the form of a step. However, if a defect occurs, the step shape is changed. In the case of the defective defect, a speed increase section exists immediately before the speed decrease section as shown in FIG. 9 (b), and the speed change amount also increases compared to the normal winding. In the case of the stacking failure, the speed increase section appears immediately after the speed decrease section as shown in FIG. 9C, and the speed change amount is larger than that of the normal winding section. That is, by checking the speed increase per unit time before and after the normal speed deceleration section due to the increase in the outer diameter of the winding, the stacking failure and the dug failure are determined.

In the case of the right side of the spool, the speed value similar to the edge peripheral speed is maintained in the normal state as shown in FIG. 8, but when a failure occurs, the speed change is shown in FIG. 10 is a graph recording the occurrence of stacking failures on the right side of the spool. 8 shows that the speed change amount represented by d in FIG. 10 is greater than the speed change amount of the right side of the spool. In the case of recession, the opposite shape appears.

The winding failure determination on the right side of the spool is made by determining the speed average value of the right peripheral portion and monitoring whether the speed variation amount is higher than the reference value. At this time, if the direction of the speed fluctuation more than the initial reference value is in the positive direction, it is determined to be a dug failure, and in the negative direction to the stacking failure.

As a method of eliminating stacking and pitting by adjusting the winding range by winding determination, there are a method of eliminating by adjusting a position where the optical fiber is traversed and a method of adjusting the amount of winding by adjusting the moving speed of the traverse part at the defective winding portion.

In the former case, the traverse part is controlled. The latter case is controlled using the traverse speed.

FIG. 11 is a view illustrating a process of eliminating a faulty winding according to the movement position correction of the traverse unit according to the present invention.

 As shown in Fig. 11, the failure during the winding of the optical fiber gradually occurs. If the time of determination of winding failure is correct, it can be eliminated at the time of failure. When a defect is detected, the traverse position is controlled according to the type of the defect to solve the defect. FIG. 11A illustrates a state in which a dent occurs on the left side of the PT spool and an accumulation occurs on the right side during the winding of the optical fiber. In this case, the take-up speed control unit moves the traverse unit to the left side as shown in FIG. Thereafter, if the defect is eliminated during winding after winding the optical fiber for a predetermined time, the take-up speed control unit returns the traverse to the existing position as shown in FIG. 11C to perform the winding operation. At this time, the position of the return can be determined in consideration of the occurrence of the failure.

12 is a view illustrating a process of eliminating a poor winding according to the movement speed correction of the traverse unit according to the present invention. As illustrated in FIG. 12, when the optical fiber winding defect is detected, the winding defect is reduced by adding or subtracting the speed of the traverse unit at the defective position. Eliminate

As shown in (a) of Figure 12, if the winding failure occurs, the speed of the traverse part is increased or decreased in proportion to the winding failure degree. In Fig. 12 (a), the left side of the spool has a dent, and when the traverse reaches this portion, it compensates the dent by increasing the amount of winding per unit time at low traverse speed. On the right side of Fig. 12 (a), stacking has occurred. When the traverse reaches this part, the stacking speed is reduced by reducing the amount of windings per unit time by increasing the traverse speed. When the winding failure is eliminated through this process, the traverse speed of the traverse part returns to the normal state as shown in FIG. At this time, when the stacking failure occurs, the traverse position is increased in the direction of the stacking failure, and when the stacking failure occurs, the traverse position is decreased in the direction of the stacking failure to compensate for the movement width of the traverse unit.

Apparently, there are many ways to modify these embodiments while remaining within the scope of the claims. In other words, there may be many other ways in which the invention may be practiced without departing from the scope of the following claims.

The optical fiber winding apparatus and method according to the present invention can suppress the occurrence of work fatigue of the operator by automating the detection of the winding failure of the high-speed rotating body by the visual inspection of the operator when the optical fiber is wound, the winding that proceeded to the sense by the experience of the operator By automating the work of resolving defects, it is possible to standardize the winding work and to significantly reduce the incidence of winding failures, thereby contributing to the improvement of productivity. In addition, the cost reduction in the spool, equipment, and manpower can be achieved by reducing the rewinding spool due to the reduction of the defective rate and increasing the equipment that can be operated by one worker. Implementing only through S / W modification can reduce additional expenses.

Claims (12)

A pay-off part having a predetermined spool in which the optical fiber drawn out from the base material is wound; A take-up part including a PT spool which draws out the optical fiber wound on the spool of the pay-off part, measures the tension by a predetermined tension measuring part, and then winds it up again; A velocity feedback unit for measuring a winding speed of the optical fiber wound on the PT spool of the take-up unit; A take-up dancer measuring the tension of the optical fiber between the take-up part and the tension measuring part; A traverse part for guiding the optical fiber to evenly wind the optical fiber on the outer circumferential surface of the PT spool by reciprocating in the longitudinal direction on the PT spool of the take-up part; And a controller configured to compare the take-up speed change of the optical fiber with a preset speed change amount by using the feedback speed signal to control the operation of the traverse unit to eliminate the winding failure when the winding failure occurs in the PT spool. Automatic control device for winding the optical fiber characterized in that. The method of claim 1, The control unit, A payoff speed controller for controlling the speed of the spool of the payoff unit; A take-up speed control unit for controlling an operation of the traverse unit; A winding control unit which performs a process of determining and eliminating a winding failure using an optical fiber winding speed; And And a tension test section for measuring the tension of the optical fiber during the transfer from the pay-off section to the take-up section. The method of claim 1, The traverse unit is an automatic control device for winding the optical fiber, characterized in that the linear reciprocating motion along the predetermined guide wheel. The method of claim 1, And the controller controls the linear movement speed of the traverse portion reciprocating on the PT spool to eliminate the bad winding on the PT spool. The method of claim 4, wherein The control unit reduces the speed of the traverse portion at the position when the defective defective on the PT spool occurs, and increases the speed of the traverse portion at the position when the defective accumulation on the PT spool occurs, thereby eliminating the defective winding automatically for the optical fiber winding characterized in that controller. The method of claim 3, wherein And the control unit eliminates defective winding on the PT spool by changing positions of opposite ends of the traverse portion reciprocating on the PT spool. The method according to claim 4 or 6, The control unit changes the winding width of the optical fiber wound on the PT spool by removing the cause of the defect by changing the moving speed of the traverse and the positions of both ends according to the occurrence of the failure after the winding failure is eliminated. Automatic control device for Measuring the tension of the optical fiber wound on the PT spool and the take-up portion having a pay-off portion, the PT spool to take out the optical fiber wound on the spool of the pay-off portion and measure the tension A take-up dancer, a traverse part for guiding the optical fiber to evenly wind the optical fiber on the outer circumferential surface of the PT spool by reciprocating in the longitudinal direction on the spool of the take-up part, and a control part for controlling the traverse part. In the automatic control device for winding an optical fiber, Winding the optical fiber on a PT spool which is guided by a linear reciprocating motion of the traverse part; Comparing the take-up speed change amount measured using the speed feedback signal of the motor with the preset speed change amount during the process; Determining a bad winding of a dent or stack on a PT spool when the take-up speed change amount is out of a range of a preset speed change amount; Controlling the operation of the traverse unit to eliminate a bad winding on the PT spool; And And recovering the initial operation of the traverse unit after the process. The method of claim 8, The process of controlling the operation of the traverse portion is a method for automatically winding the optical fiber, characterized in that for controlling the linear movement speed of the traverse portion reciprocating on the PT spool. The method of claim 9, The process of controlling the linear movement speed of the traverse part is a process of reducing the speed of the traverse part at the position when a dent failure occurs on the PT spool, and increasing the speed of the traverse part at the position when the stacking fault on the PT spool occurs. Method for optical fiber auto winding The method of claim 8, The process of controlling the operation of the traverse portion is a method for automatic winding of the optical fiber, characterized in that for changing the position of both ends of the change in the direction of the traverse portion reciprocating on the PT spool. The method of claim 8, After the initial recovery process of the traverse part, the winding failure of the optical fiber wound on the PT spool according to the degree of occurrence of the failure after eliminating the failure occurrence factor further comprises the step of eliminating the failure Way.

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