JPH0327464B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wire winder tension control device for controlling the tension of a winder for enameled wire and various other wire wires using annealed copper wire. .

[Conventional technology]

When winding the enamel wire or the like using a filament winding machine, it is necessary to maintain a constant tension on the filament in order to maintain uniform softness over the entire length. This requirement has recently become increasingly important in order to improve the finishing accuracy of enamel windings and the like.

Conventional striatum winders that address such requirements include:
As shown in the overall schematic diagram of FIG. 6, a take-up reel, a torque motor that drives the take-up reel and has a characteristic that changes on a rotation speed-torque curve determined by a drive voltage, and a torque motor that drives the take-up reel; It consists of a manual voltage regulator, such as a slider, which has the function of manually adjusting the drive voltage of the motor.

Since the winding diameter of the reel increases as the filament is wound onto the take-up reel, the torque increases in proportion to this. If the rotational speed of the torque motor is kept the same, as the reel winding diameter increases, the circumferential speed on the reel winding diameter also increases. Therefore, the drive voltage is adjusted by a manual voltage regulator in order to increase the output torque and reduce the circumferential speed to achieve a desired operating state.

[Problem that the invention seeks to solve]

The above-mentioned method of wire winding machine has a low equipment cost, but the drawback is that the winding tension cannot be maintained at a constant level with high accuracy due to the approximation method of manually adjusting the voltage according to the operating conditions. There is.

In order to keep the winding tension constant, (1) it is necessary to always keep the combination of the winding torque motor characteristics and the reel size used optimal.

(2) If this is not possible, the operator will have to frequently operate the manual voltage regulator during winding.

etc. are important, and it is difficult to reliably implement these with normal production equipment.

This invention was made in view of the above problems, and the problems are the low cost advantage of the torque motor system and the feedback system that directly detects the tension on the take-up reel and feeds back the sensor signal to the control device. By combining the high accuracy of the above methods, the operation of the manual voltage regulator, which is frequently performed by the operator during winding, is automated by directly connecting the stepping motor driven by the sensor signal to the manual voltage regulator. This provides a tension control device for a filament winder that realizes a feedback system using a sampling system and enables highly accurate winding at low cost.

[Means for solving problems]

As a means for solving the above problems, the present invention includes a manual voltage regulator that adjusts the torque motor drive voltage for driving the take-up reel, and a pulse motor whose output shaft is connected to the manual adjustment section of the regulator. and a controller that controls a drive power source of the pulse motor, and a tension sensor that is provided in a supply path of the filament body to be wound on the take-up reel and detects that the tension of the filament body deviates from a predetermined value, The controller has a configuration including a setting section for setting the number of pulses for each step of the pulse motor and the interval between pulse transmissions.

[Effect]

When the tension of the filament body deviates from a predetermined value by the tension sensor, the controller starts controlling the pulse motor based on the output signal. The output of the controller is given to the pulse motor, and the output shaft of the pulse motor is connected to the manual adjustment section of the manual voltage regulator, so that the manual voltage regulator is automatically controlled by the output. Therefore, the method of control is to provide the pulse motor with appropriate values for the number of pulses and pulse transmission interval required to advance the pulse motor each step by a setting signal from a setting section provided in the controller, and manually adjust the voltage. This is done by increasing the voltage of the drive power supply supplied to the torque motor by the device in advance so as to match the torque fluctuation curve expected for wire bodies of various wire diameters. The performance curve of a torque motor changes such that the rotational speed decreases as the torque increases under a constant voltage, and as the voltage increases, the performance curve moves upward. Therefore, by automatically controlling the torque motor as described above, the torque fluctuation can be made to match the actual torque fluctuation with extremely high precision, and the tension on the filament can be kept constant at all times.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an overall schematic system diagram of a wire winding machine equipped with a tension control device according to the present invention.

1 is a take-up reel for winding the filament W, 2 is a dancer device consisting of a pair of dancer rollers 2' and 2'' (see below for details), 3 is a torque motor, and 4 is a power supply voltage for this torque motor. The output shaft 6 of a pulse motor 7 is connected to the manual regulator 5 (manual knob) of the regulator 4, such as a slider.

The pulse motor 7 is equipped with a switch 8 for manual opening/closing.
A controller 9 is connected via the controller. Details of the controller 9 will be explained later. A tension sensor 10 attached to the dancer device 2 is connected to this controller 9.

FIG. 2 is an assembled side view of the filament winding machine. The filament W supplied to the take-up reel 1 via the dancer device 2 is arranged so as to be wound up via the roller 11. The roller 13 is connected to a traverse device 12 that allows its support arm to move up and down depending on the winding situation. The take-up reel 1 and the traverse device 12 are erected on a base 15, and inside the base 15, a torque motor 3, a manual voltage regulator 4, a pulse motor 7, etc. are arranged.

FIG. 3 is a detailed view of the dancer device 2 and the tension sensor 10 attached thereto. The dancer device 2 is
It is used to always apply a predetermined tension to the running linear body W, and consists of a pair of dancer rollers 2' and 2'', one dancer roller 2'' being able to move within a predetermined range relative to the other dancer roller 2'. is formed. That is, the dancer roller 2'' has two rods ₂₂ provided on its bearing portion ₂₁ inserted through the bearing portion 21 of the dancer roller ₂ ', and the rod 22 is inserted between the fixing plate ₂₄ provided in the middle and the bearing portion ₂₁ . A spring portion 2 ₃ is inserted in the spring portion 2 3 .The filament body W includes two dancer rollers 2 ′,
2'' to the next roller 11.
Therefore, when the tension in the filament increases, the dancer roller 2'' moves to the right to absorb the tension, and when the tension decreases, the spring ₂₃ stretches and pushes the dancer roller 2'' back to the left, thereby maintaining a constant tension. Retained. The tension sensor 10 is attached to the dancer roller 2″ on the movable side.
is provided at a position corresponding to the target tension.

FIG. 4 shows a block diagram of the controller 9.
This controller 9 includes an oscillation circuit 9 ₁ that generates a fixed number of pulses at fixed time intervals when the dancer roller 2'' approaches the tension sensor 10, and an oscillation circuit 9 ₁
It is provided with at least a waveform adjustment circuit 9 ₂ that shapes a pulse train from 1 to a waveform of a desired pattern, a distribution circuit 9 ₃ that distributes the shaped pulse train to each phase, and a drive current amplification circuit 9 ₄ . For the oscillation circuit ₉₁ , a setting section A that sets the number of pulses for each step of the pulse motor is a waveform adjustment circuit ₉₂ .
A setting section B for setting the interval of pulse oscillations transmitted at a certain time is attached to the oscilloscope.

The operation of this embodiment configured as above will be explained below.

As the traveling filament W is wound onto the take-up reel 1, its winding diameter increases. In order to align the windings of the filament W over the entire reel width of the take-up reel 1, the roller 11 is moved up and down by the traverse device 12 in synchronization with the rotation of the take-up reel, and the wire is taken up. As the winding diameter increases, even if the tension of the filament W remains constant, the driving torque of the take-up reel 1 increases in proportion to the increase in the winding diameter. Therefore, the torque motor 3 is driven to increase its output torque in response to this increase in drive torque. Further, when the take-up diameter increases, the circumferential speed on the take-up reel increases when the torque motor is driven at a constant rotational speed. Therefore, since the filamentous body W is wound at an excessive speed, the tension of the filamentous body W becomes larger than necessary, and it becomes impossible to wind the filament with a constant tension. Therefore, the rotational speed of the torque motor is driven to decrease at a constant rate as the winding diameter increases.

In actual driving of the take-up reel, if the torque and rotation speed of the torque motor do not correspond accurately to the torque and rotation speed of the filament W on the take-up reel,
Or, due to some cause such as an increase in frictional force in any of the supply routes of the filamentary body W, the traveling speed
The tension may change, and in order to always keep the tension of the striated body W constant regardless of such various state changes, the dancer device 2 is provided at an appropriate position on the supply path of the striated body W, as described above. There is. The dancer device 2 has a tension sensor 10 corresponding to the position of the target tension.
is provided, so that when the tension of the filamentous body W deviates from the target tension, the sensor 10 sends a signal to the controller 9 to start control.

When the controller 9 starts control based on the signal from the sensor 10, the oscillation circuit ₉₁ first oscillates a pulse signal. For this pulse signal, the number of pulses required to rotate the pulse motor 7 by one step is set by the setting section A, and the interval of pulse oscillation is adjusted by the setting section B as appropriate in the waveform adjustment circuit ₉₂ . Therefore, changes in the driving state of the torque motor due to differences in the wire diameters of the filamentary bodies W can be adjusted by assuming in advance the setting values of these setting sections A and B corresponding to the respective wire diameters. Ru. The waveform of the oscillated pulse signal is appropriately adjusted by the waveform adjustment circuit ₉₂ to match the driving conditions of the pulse motor, and the waveform is adjusted by the pulse motor ₇ by the distribution circuit 93.
A signal is generated whose timing is adjusted and distributed from the pulse signal after the waveform adjustment according to the number of phases. Further, the pulse signals of each phase are amplified by the amplifier circuit 9 ₄ and the output signals are provided to the pulse motor 7 . The pulse motor 7 is driven by the manual voltage regulator 4 connected to its output shaft adjusting the voltage only in the direction in which the voltage increases.

When setting the manual voltage regulator 4, regardless of the size of the reel, first turn off the switch 8, manually hook the line, and in this state set the regulator 4 to the optimal position. This optimal position is
The voltage level is set in advance by the manual adjustment section 5 so that the voltage level corresponds to the winding start torque shown in FIG. Thereafter, when the switch 8 is turned on, the regulator 4 is automatically adjusted by the controller 9. The adjustment is performed by adjusting the waveform by the waveform adjustment circuit ₉₂ using the setting signal from the setting section B so that the torque changes in accordance with the assumed driving torque curve of the torque motor shown by the thick line in FIG. It is done. The setting signals in setting sections A and B are determined under relatively rough conditions,
Once set, both the reel size and wire diameter are appropriately set within a predetermined accuracy range so that there is no need to widely change them.

〔effect〕

Since the present invention is configured as described above, the output shaft of the pulse motor 7 is connected to the manual voltage regulator 4,
By making the change in the number of pulses oscillated by the controller 9 substantially correspond to the change in drive torque expected for the torque motor, it is possible to control the take-up tension on the take-up reel to always be constant. In this control method, in contrast to the configuration of a conventional wire winding machine, a controller 9, a pulse motor 7,
Since the tension sensor 10 is only added, it can be used in all wire winding machines, and a winding machine with extremely high precision and low cost can be provided.

[Brief explanation of drawings]

Figure 1 is an overall schematic system diagram of a wire winder equipped with a tension control device according to the present invention, Figure 2 is an assembled side view of the wire winder, and Figure 3 is a wire winder equipped with a tension detection sensor. 4 is a block diagram of the controller, FIG. 5 is a characteristic curve of the torque motor, and FIG. 6 is a schematic diagram of a conventional wire winder. 1... Take-up reel, 2... Dancer device, 3...
Torque motor, 4... manual voltage regulator, 7... pulse motor, 8... switch, 9... controller, 10... tension sensor.

Claims (1)

[Claims] 1. A manual voltage regulator that adjusts a torque motor drive voltage for driving a take-up reel, a pulse motor whose output shaft is connected to a manual adjustment section of the regulator,
The controller includes a controller that controls a driving power source of a pulse motor, and a tension sensor that is provided in a supply path of the fibrous body to be wound on a take-up reel and detects that the tension of the fibrous body reaches a predetermined value. 1. A tension control device for a wire winding machine, characterized in that it is provided with a setting section for setting the number of pulses for each step of the pulse motor and the interval between pulse transmissions. 2. The controller includes a transmission circuit equipped with a setting section for setting the number of pulses, a waveform shaping circuit equipped with a setting section for setting the pulse transmission interval, and a pulse train that outputs the shaped pulse train to each phase of the pulse motor power supply. The device is equipped with at least a distribution circuit that distributes the power to the output power source, and an amplifier circuit that amplifies the output power of the power supply, and the pulse motor is manually driven according to the setting signals of the two setting sections in response to the change in the driving torque of the torque motor that is assumed in advance. The tension control device for a wire winder according to claim 1, characterized in that the tension control device for a wire winder is controlled by changing the voltage of the regulator. 3. In order to keep the tension in the striatum constant, a tension sensor is installed in the dancer device installed in the striatum path at a position corresponding to the position of the target tension in the striatum. A movable dancer roller that moves in accordance with the tension sensor approaches the tension sensor to detect that the tension has deviated from the target tension, and starts controlling the controller based on the output signal. The filament winder tension control device according to item 2. 4. Claims 1 to 3, characterized in that a power supply circuit that supplies the output of the controller to the pulse motor is provided with a manual opening/closing switch.
2. The wire winding machine tension control device according to any one of the items.