JPH01209277A - Automatically controlled rewinding method for linear streak unit - Google Patents

Abstract

PURPOSE:To automatically perform sound rewinding always in an optimum rewinding condition by utilizing a bobbin rotary speed, which increases in a root part while decreases in a crest part, automatically increasing a traverse moving amount to a root part side and automatically decreasing the moving amount to a crest part side. CONSTITUTION:A bobbin 20 rewinds a linear streak unit 40 in fixed tension by a rotary speed signal A, and inputting a rotary speed of the bobbin 20, during its rewinding, to an arithmetic control unit 30, it detects an average rewinding rotary speed N0. A rotary speed Nf in the vicinity of a flange part is input to the control unit 30 as the signal A, and ratio of the speeds Nf/N0 is calculated. Since the ratio Nf/N0 increases in a root part of the flange part 21, when a value of the ratio increases to not less than a fixed value, a moving amount X0 is further added to an integrated quantity of the traverse moving amount X0 per one rotation determined by l/2, when assumed l for rewinding length of the bobbin, and an inverting signal C is instructed. While on the contrary, when the ratio Nf/N0 decreases to not more than the fixed value in a crest part like a flange part 22, the moving amount X0 is subtracted from the integrated quantity of the moving amount X0, and outputting the inverting signal C, sound rewinding is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an automatically controlled winding method for suitably winding a filament on a bobbin.

[Prior Art and Problems] Silk filaments such as enamelled wires are wound onto bobbins after being coated with enamel and supplied to the market.

A conventional bobbin winding operation will be described below with reference to FIGS. 5 and 6.

The filament body 40 is taken up by the take-up capstan 8 of the take-up machine 7 and transferred to the bobbin 2 of the winding machine 10 via the traverser 11.
It is wound up to 0. In the figure, reference numeral 1 denotes a winding motor for rotating the bobbin 20 and winding the filament 40 while keeping the tension within a certain range.

The traverser 11 is fitted onto a helical shaft 12 that is rotated by a traverse movement motor 13, and reciprocates from side to side in the drawing by forward and reverse rotation of the helical shaft 12, thereby orderly winding the filament 40 around the bobbin 20. Reference numerals 14 and 15 indicate limit switches, which are used to reverse the rotation of the motor 13 when the traverser 11 moves while traversing the filament body 40 and reaches the collar 21 or 22, thereby moving the filament body in the opposite direction. belongs to.

In the above case, there is no problem if the limit switches 14 and 15 are accurately installed at the predetermined positions, but if the bobbin 20 is set incorrectly, the limit switches 14 and 15 are incorrectly set, or they move due to load force during work, etc. As shown in Figure 9, the relative positions of the crocodiles 21 and 22 may deviate from each other. In such a state, an accurate traverse reversal operation is not performed, and the bobbin 2
On the side of the collar 22 of 0, it is wound excessively and forms a so-called mountain H.
On the flange 21 side, winding is insufficient and a valley is formed, resulting in poor winding.

In order to prevent the occurrence of such winding defects, the current situation is that field workers frequently monitor the winding bobbin and adjust the positional deviation of the limit switch. However, if the operator had to adjust the position of the limit switch one by one as the filament winding progresses, the work would not only be extremely complicated, but it would also be a waste of manpower and time. This was also a major factor leading to high costs.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to eliminate the manual adjustment work and automatically perform sound winding when winding a filament. The purpose of this paper is to provide a new winding control method that can increase the winding speed.

[Summary of the Invention] The present invention enables input of the rotational speed of the bobbin into an arithmetic and control device using a rotation signal, calculates the amount of traverse movement required for the rotation, and integrates the calculated amount of movement per rotation. The basic idea is to perform a traverse while doing so, and when the required number of integrations is reached, issue a reversal command to the traverse to reverse it.If the reversal command position deviates and the above peaks or valleys occur, utilizes the fact that the bobbin rotation speed is faster in the valleys and slower in the peaks,
The arithmetic and control unit reads the speed changes and automatically increases the amount of traverse movement towards the valleys and automatically decreases the amount of movement towards the peaks, ensuring that winding is always in the optimum winding state. This is what makes it possible.

[Example] The present invention will be described in detail below based on the drawings of the example.

FIG. 1 is an explanatory diagram schematically showing a winding device used in the present invention. 1 is a motor that rotates the bobbin 20,
For example, it is appropriate to use a torque motor in order to keep the tension of the filament constant. As the motor 1 rotates, it sends a rotation signal, for example, a pulse, to the arithmetic control unit N.
Rotation signal A is input to 30.

Since the rotation of the motor 1, that is, the rotation speed of the bobbin 20 due to the rotation of the motor 1 can be determined from the signal A, the filament 4 to be wound
The necessary traverse movement amount per revolution of the bobbin 20, that is, XO, which will be described later, can be calculated by the arithmetic and control device 30, taking into consideration the outer diameter of the bobbin 20 and the winding diameter of the bobbin 20. Based on the calculation result, the traverse drive motor 3
The drive signal B is output to the drive signal B and a drive command is given.

In this embodiment, the bobbin rotation motor 1 is connected to the fixed base 2.
It is assumed that the movable table 4 is fixed to the position shown in FIG. With this configuration and the guide 9 of the filamentary body 40 being fixed, the bobbin 20 reciprocates in the axial direction and traverses during bobbin winding. However, this is for illustrative purposes only and, like the conventional example already described, the guide 9
may be configured to move back and forth, and there is no particular choice in the configuration. However, it is necessary for the traverse drive motor 3 to be able to accurately control its drive amount, that is, the amount of traverse movement, in accordance with the commands of the control device 30, and it is not possible to control the rotation speed accurately like a pulse motor. There needs to be.

In FIG. 1, numerals 5 and 6 are traverse center position detection sensors, and in this embodiment, needles 5 and 6 are configured to detect the traverse center point, that is, point P, which will be described later, and the detection results are used as a signal for control. device 30
is input.

7 is a take-up machine, and 8 is a take-off capstan, which are not particularly different from the conventional example.

Next, a case in which a filament is wound by the control method according to the present invention will be described with reference to the drawings.

When the rotation signal A is input to the control device 30 as the bobbin rotation motor 1 rotates, the control device 30 detects the rotation speed of the bobbin 20 and adjusts the bobbin winding at that time according to a predetermined program. A drive command B is issued to the traverse drive motor 3 by calculating the optimum traverse movement amount according to the diameter and the diameter of the filament to be wound.

In FIG. 2, XO is the traverse movement amount per bobbin rotation calculated in this manner.

Naturally, the value of XO increases as the diameter of the filament to be wound is thicker, and decreases as the diameter of the filament is thinner.

The center point P of the total traverse length g is given by the traverse center position detection sensors 5 and 6 shown above with a signal, and the control device 30 calculates the unit traverse movement amount XO from the center point P toward the tsuba 21. The traverse drive command B continues to be issued while being integrated. Then, when the cumulative number of XOs reaches 1/2 of the length, the control device 30 issues a reversal command C to reverse the traverse movement. In this way, it passes through the center point P again and traverses toward the tsuba 22 on the opposite side, and when the cumulative number reaches ρ/2, a re-inversion command C is issued to cause the traversal to traverse toward the tsuba 21 again.

In the above, there is no problem as long as the center point P of the traverse and the center point of the bobbin 20 match. However, if the center point of the bobbin 20 (indicated by a dotted line) and the center point P of the traverse are misaligned as shown in FIG. 7 due to a setting failure of the bobbin 20, etc., a mountain H as shown in FIG.
A valley V is formed and a winding failure occurs.

In order to eliminate the winding failure as described above, the following control may be performed.

The rotational speed of the bobbin 20, which is winding the filament 40 with constant tension, is input to the arithmetic and control device 30 by the rotational speed signal A;
Thereby, the average winding rotation speed No. is detected. If, during winding, a valley V or a peak F (as shown in Fig. 8) occurs near the flange of the bobbin, under constant tension winding conditions, the rotation will be faster in the valley V portion and the rotation will be faster in the crest H portion. becomes late.

The rotational speed N1 near the flange is input to the arithmetic and control device 30 as a signal A, and the control device 30 calculates the ratio N1.
Have students calculate l/NO. Nl/No at valley V part
will increase, so if the value exceeds a certain value, the third
As shown in the figure, an inverted signal C is commanded by further adding XO to the cumulative number of XO determined by f1/2. On the other hand, if N1/No becomes less than a certain value at the mountain H portion, as shown in FIG. 4, the above-mentioned 1! The inverted signal C is commanded by subtracting XO from the cumulative number of XO determined by /2.

By repeating this, the deviation between the center point of the bobbin 20 and the center point of the traverse is automatically corrected, the occurrence of valleys or peaks H is automatically eliminated, and healthy bobbin winding is achieved. Can be done.

Regarding NO, if rotational unevenness is large, N1
It is best to determine NO from the rotation at a position close to N1, and approximately 80 to 90% from the N1 position is appropriate.

Furthermore, even if the above-mentioned Nl/NO correction is performed, there is a risk that the filament 40 may come into contact with the collar and break the wire at the valley V. Therefore, the fluctuation rate at the valley is higher than that at the peak, that is, the fluctuation rate is 60 to 80% of the peak, and the above
It is desirable to set it so that the addition operation of O is performed.

On the other hand, if a constant tension is maintained, the rotational speed of the bobbin 20 is increased at the beginning of winding onto the bobbin 20, and as the winding diameter of the filament becomes thicker, the rotational speed of the bobbin 20 is decreased. Normally, such operations are automatically performed using a torque motor or the like.

If the rotation speed decreases due to the above, the traverse movement amount
If it is also made smaller, irregularities will occur in the traverse pitch. In this case, the arithmetic and control device 3o stores the rotational speed at the start of winding, calculates the ratio with the reduced rotational speed,
If a command is issued to reduce the amount of traverse movement based on the result, it becomes possible to wind the film while automatically correcting the traverse pitch to always maintain a constant traverse pitch, thereby further improving the winding quality.

[Effects of the Invention] As described above, according to the winding control method of the present invention, it is possible to always wind the filament around the bobbin in an orderly manner, and moreover, it eliminates the reversing limit switch and eliminates the conventional traverse adjustment method. The industrial value of this technology is truly great, as it eliminates the need to allocate workers at all, resulting in labor and time savings, as well as significant cost reductions.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a specific configuration example of the apparatus used in the method according to the present invention, FIGS. 2 to 4 are explanatory diagrams showing the traverse control situation according to the present invention, and FIG. An explanatory diagram of the winding part, Fig. 6 is an explanatory diagram showing the conventional traverse situation, Fig. 7 is an explanatory diagram showing how the traverse center is deviated from the bobbin center, and Fig. 8 is an explanatory diagram showing a situation where the winding is defective. The explanatory diagram, FIG. 9, is an explanatory diagram showing the deviation of the limit switch. 1: Bobbin rotation motor, 2: Fixed base, 3: Traverse drive motor, 4: Traverse moving base, 5.6: Traverse center detection sensor, 7: Take-up machine, 8: Take-up capstan, 9 Ni guide, 10: Winding machine, 20: Bobbin, 30: Arithmetic control unit, 40: Striatum, A: Rotation signal, B: Traverse movement signal, C: Reversal signal, D: Center point signal. Agent Patent Attorney Fujio Sato Fig. 1 7 2: Gotomo 5: Torque I: -S (C pot force M motor 4: Mounted with many pots, 6; Tora I view υf 4 pieces o f” >su7
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Claims (3)

[Claims] (1) The rotation signal accompanying the rotation of the bobbin is input to the arithmetic and control unit to calculate the amount of traverse movement required for one rotation of the bobbin, and the calculation result is input to the traverse drive motor, and the motor is operated while sequentially adding the values. An automatic control winding method for a filament, in which a traverse drive motor is driven, and when the added number reaches a predetermined reversal imparting condition number, a reversal signal is input to a traverse drive motor to reverse the motor, and the same process is repeated thereafter. (2) A rotation signal accompanying the rotation of the bobbin that winds the filament at a constant tension is input to the arithmetic and control unit to calculate the amount of traverse movement required for one rotation of the bobbin, and the calculation result is input to the traverse drive motor. In a winding method in which the motor is driven while sequentially adding these values, and when the added number reaches a predetermined reversal imparting condition number, a reversal signal is input to the traverse drive motor to reverse it, and the same process is repeated thereafter. , the average winding rotational speed in the traverse is N0, the rotational speed near the collar is N1, the amount of traverse movement required for one revolution of the bobbin is X0, and the winding length of the bobbin is l, then N1/N0. Automatic control of the striatum that adds and inverts the addition number of X0 by more than the number determined by l/2 at the valley where the value is larger than a predetermined value, and subtracts and inverts at the peak where N1/N0 becomes smaller. Winding method. (3) At the time of winding, a constant tension is applied to the filament, the bobbin rotational speed and traverse movement amount at the beginning of winding are stored in the arithmetic and control device, and as the bobbin becomes thicker and the rotational speed decreases, the initial traverse pitch is increased. 3. The method for automatically controlling and winding a filament according to claim 1 or 2, wherein the traverse movement amount is calculated and commanded in accordance with the rotational speed so that the pitch is the same as the pitch.