JPS6231482B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic winding control method and device for a coil winding machine for winding a predetermined number of conducting wires around a bobbin or the like to form a coil.

A coil winding machine attaches a bobbin to a winding shaft driven by a motor and rotates it, and winds a conductive wire supplied from a main winding drum onto the rotating bobbin to form a coil. This type of coil winding machine must rotate the winding shaft at high speed in order to increase the winding speed, so stopping the rotation at the end of winding is a way to prevent uneven winding while keeping the tension on the conductor constant. It must be done gradually so that the winding does not occur, and the total number of turns of the coil at the time of stopping must be a predetermined number of turns determined by the design. For this reason, in conventional coil winding machines, a brake device is connected to the winding shaft, and when the number of turns of the wire wound by the rotation of the bobbin reaches a certain number, the power to the motor is turned off or the winding is done with a clutch. The winding shaft is disconnected from the winding shaft and rotated by inertia, and when a certain number of windings have been wound, a brake device is activated to stop the winding shaft. In other words, the braking of the winding shaft is divided into two stages, and the number of turns to start braking for each is set in advance, and by appropriately adjusting the number of turns to start braking, the total number of turns and the predetermined number of turns of the coil can be adjusted. This allows the coil winding machine to increase the winding speed. However, transformer coils and speakers,
Some microphone voice coils require high quality with precisely uniform characteristics, and even with this method, the total number of turns is limited because conditions change drastically when the coil winding machine is started. It is not easy to make adjustments to stabilize the number of windings, and even when the winding machine is in operation, friction changes due to the heat generated by each bearing and brake device, so adjustments must be made frequently, and the error from the specified number of turns is extremely high. It has been difficult to obtain small, high-precision coils.

The present invention was made in view of the above circumstances, and provides an automatic winding system for a coil winding machine that can automatically set the optimum number of turns to start braking in response to the ever-changing conditions of the winding machine. The object of the present invention is to provide a line control method and device.

Embodiments of the invention will be described based on the drawings. The coil winding machine 1, as shown in FIG.
A drive unit that transmits the rotation of a motor 3 equipped with an electromagnetic brake 2 to a winding shaft 5 via a variable torque transmission device 4, and a drive unit that transmits the rotation of a motor 3 equipped with an electromagnetic brake 2 to a winding shaft 5 through a tension roller 8. 5, and a guide section that regularly guides the conductive wire 7 to be wound around the bobbin 9 by a winding guide 11 that moves in accordance with the rotation of the pulse motor 10. There is. The drive section transmits the rotation of a motor 3 to which an electromagnetic brake 2 is coaxially connected via a belt from a variable torque transmission 4 to one end of an intermediate shaft 13 equipped with a torque detector 12, and transmits the rotation to the other end of the intermediate shaft 13. The provided gear 14 is meshed with the gear 15 provided at the center of the winding shaft 5 to rotate the winding shaft 5. A jig 16 for fitting the bobbin 9 is provided at one end of the winding shaft 5, and a rotary encoder 17 for measuring the number of revolutions of the winding shaft 5 is mounted at the other end. In the winding section, the conductive wire 7 supplied from the original winding drum 6 fitted into a receiving shaft (not shown) is wound once around the tension roller 8, and is then hooked onto the guide groove 18 of the winding guide 11 to secure the side end of the bobbin 9. Fixed to. The tension roller 8 is connected to an electromagnetic clutch brake 19 via a belt. In the guide section, a reciprocating plate 21 is screwed onto a threaded rod 20 directly connected to the rotating shaft of the pulse motor 10, and a guide groove 18 formed at the end of a rod-shaped winding guide 11 fixed to the reciprocating plate 21 is connected to a tension roller. 8 and bobbin 9.

Next, the operation of this invention will be explained. By turning on a power switch (not shown), the winding shaft 5 receives the rotation of the motor 3, rotates the bobbin 9 fitted in a jig 16 fixed to one end, and winds up the conductor 7. At the same time, the number of turns is measured by a rotary encoder 17 attached to the other end. At this time, the torque detector 12 provided on the intermediate shaft 13 detects the winding torque of the winding shaft 5, and the variable torque transmission device 4 changes the transmission ratio to increase the winding torque of the winding shaft 5.
The winding torque is always kept constant by changing the rotation speed of the winder. The conductive wire 7 supplied one after another from the original winding drum 6 is wound around the tension roller 8.
While rotating, the material is wound onto the bobbin 9 along the guide groove 18 of the winding guide 11. The rotation of the tension roller 8 is controlled by an electromagnetic clutch brake 19 so that the conductor 7 is always wound onto the bobbin 9 with a constant tension. By reciprocating the guide groove 18 in the axial direction, the conducting wire 7 is wound regularly around the bobbin 9. The reciprocating movement of the winding guide 11 at this time is controlled by the rotation of the pulse motor 10.

The automatic winding control of the coil winding machine 1 of this invention is as follows:
As shown in FIG. 2, it is constructed by electrically connecting a control device 23 to the coil winding machine 1 via an interface 22. The control device 23 is
Input devices such as a punch card reader 24 and a keyboard 25, and a display device 26 such as a display and a printer are provided, and a rotary encoder 17 is provided.
The motor 3, electromagnetic brake 2, pulse motor 10, and electromagnetic clutch brake 19 are controlled based on the detection signal. The interface 22 is a device that converts these control signals of the control device 23 into input signals sent from the power supply 27 to each device, and converts detection signals of the rotary encoder 17 into input signals of the control device 23.

The block diagram of the automatic winding control device for the coil winding machine 1 of the present invention shown in FIG. 3 will be explained in accordance with the flowchart shown in FIG. 4. A [START]
Turn on each device. B [Data input] Data corresponding to the type of coil to be wound is input using the punch card reader 24 and keyboard 25. For the electromagnetic clutch brake 19, it instructs the electromagnetic clutch brake control section 28 about the tension to be applied to the conductor during winding, and for the pulse motor 10, it instructs the pulse motor control section 29 about the winding pitch, the number of turns, etc. , the first memory 30 and the second memory 3
1, the first braking start winding number and the second
The braking start winding number is stored, and the predetermined winding number, data correction, and control process program are input to the arithmetic and control unit 32. C [Bobbin SET] Bobbin 9
is fitted into the jig 16 of the winding shaft 5, and the end of the conductive wire 7 is fixed to the side end of the bobbin 9. D [Motor ON] A switch is turned on by manual operation or the like, and the motor 3 rotates to start winding. E [First set winding number] When winding starts, the counter 3 is output from the rotary encoder 17.
A pulse is sent to 3 to measure the number of turns of the coil being wound. This measured number of turns is sent to the comparator 34.
is compared with the first braking start winding number stored in the first memory 31, and at the same time when the measured winding number reaches the first braking start winding number, the comparator 34 outputs a signal to the motor drive unit 35.
A stop signal is sent to F [Motor OFF] When a stop signal is sent to the motor drive unit 35, the power to the motor 3 is cut off and the winding shaft 5 rotates only by inertia, so that the rotational speed gradually decreases.

G [Second set number of turns] The comparator 34 compares the number of turns of the coil that continues to be wound with the second braking start turn number stored in the second memory, and as soon as the second braking start turn number is reached, the comparator 34 An actuation signal is sent from 34 to a brake actuation section 36. H [Brake
ON] When an activation signal is sent to the brake activation unit 36, the electromagnetic brake 2 is activated, and further sudden braking is applied to the winding shaft 5, which had been rotating due to inertia. I [Take-up shaft stop] When the electromagnetic brake 2 is activated, the take-up shaft 5 immediately stops, pulses from the rotary encoder 17 are no longer sent, and the next pulse is sent within a certain period of time after the last pulse is sent. It is determined that the system has stopped when no message is sent. J [Output of winding results] When it is determined that the stop is to be made, the number of counters measured at that time is printed out as the total number of windings and sent to the arithmetic control section 32 . L [Bobbin OUT] Cut the conductor 7 and remove the bobbin 9 from the jig 16 of the winding shaft 5.
M [Data correction] The arithmetic control unit 32 compares the total number of turns sent with a predetermined number of turns, and based on the error, corrects the number of turns at which the second braking starts according to the data correction program, and further corrects the error. If necessary, such as when it is too large, the first braking start winding number is also corrected. N [Correction value output] The second braking start winding number corrected by the calculation control unit 32 is sent to the second memory 31 and replaced with the previous second braking start winding number. When the first brake winding number is also modified, the first memory 30 is also replaced at the same time. Winding is then started in the same manner, and the next coil is wound again.

The pulse motor control section 29 generates pulses according to the number of turns sent from the counter 33 according to data such as the winding pitch, and controls the winding guide 1.
Controls the reciprocating movement of 1. In addition, after the winding shaft (not shown) is stopped, the counter 33 is reset, the electromagnetic brake 2 is released, the first memory 30 and the second memory 31, which are compared by the comparator 34, are converted, the motor drive unit 35 is activated, and the brake is activated. All winding control processes, including transmission to the section 36, are carried out by the arithmetic control section 3.
This is carried out according to the program input in step 2.

The aforementioned control process will be explained using the graph shown in FIG. The rotational speed rpm of the winding shaft 5 is plotted on the vertical axis, and the number of turns T is plotted on the horizontal axis. When the motor 3 starts rotating, the rotational speed rpm increases and decreases along with the number of turns T until reaching a constant speed. When the number of windings T reaches the first braking start winding number _a1 , the power to the motor 3 is cut off, and the motor 3 rotates due to inertia, and the speed decreases. Furthermore, the number of turns T is the second braking number of turns b ₁
When the number of turns is reached, the electromagnetic brake 2 is activated and the motor stops when the total number of turns is _N1 . This total number of turns N ₁ is compared with the predetermined number of turns N, and based on the difference, the second damping turns number b ₁ is corrected to b ₂ (if necessary, the first damping turns number a ₁ is also a ₂ ), and the corrected number The next winding is performed using the second braking start winding number b ₂ (and the first braking winding number a ₂ ). The total number of turns N ₂ in the next wire is again compared with the predetermined number of turns N, and the winding of the coil is repeated while making similar corrections.

As explained above, according to the method and device of the present invention, each time the coil is wound, the error between the actual total number of turns and the predetermined number of turns is determined, and the second braking is performed according to a predetermined program. Since the starting winding number is automatically corrected and used as the next braking starting number, even if conditions such as friction of the electromagnetic brake 2 change moment by moment during long-term use, high quality with little winding error is achieved. Not only can a stable coil be obtained, but also it can easily adapt to variations in the number of turns during startup, and it is possible to prevent a decrease in the yield of coil manufacturing. Furthermore, since it does not require a precise and expensive motor or brake unlike conventional coil winding machines, the cost of the device can be kept low.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the coil winding machine, Figure 2 is an explanatory diagram of the automatic winding control device of the coil winding machine, and Figure 3 is an illustration of the automatic winding control device of the coil winding machine.
4 is a flowchart of automatic winding control of the coil winding machine, and FIG. 5 is a graph showing the relationship between the number of rotations of the motor and the number of turns. DESCRIPTION OF SYMBOLS 1... Coil winding machine, 2... Electromagnetic brake, 3... Motor, 4... Variable torque transmission, 5... Winding shaft, 6
...Material winding drum, 7...Conducting wire, 8...Tension roller, 9...Bobbin, 10...Pulse motor, 11... Winding guide, 17...Rotary encoder, 19...
Electromagnetic clutch brake, 20... threaded rod, 23... control device.

Claims (1)

[Claims] 1. When winding a coil with a coil winding machine, a first braking start winding number is applied to cut off the drive of the rotating bobbin, and a brake is applied to the bobbin that rotates by inertia after the drive is cut off. The second braking start winding number is set to stop the rotation, and each time one coil winding is completed, the next coil winding is determined based on the error between the total number of coil windings and the predetermined number of coil windings. An automatic winding control method for a coil winding machine, characterized in that winding is always performed using the latest data by obtaining a second braking start winding number and replacing it with the previous braking start winding number. 2. A counter that measures the number of turns of the coil, a storage device that stores the number of turns at the start of braking, a comparator that compares the number of turns measured by the counter with the number of turns stored in the storage device, and a counter that measures the number of turns measured by the counter after finishing the winding. A coil winding device characterized in that it has an arithmetic control unit that calculates an error between the total number of turns of the coil and a predetermined number of turns stored in advance, and corrects and replaces each number of turns stored in a storage device according to a predetermined program. Automatic winding control device for wire machine.