JPS6348926Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a filament coil forming device for manufacturing filament coils used in incandescent light bulbs, filament display tubes, etc. The present invention relates to a filament coil forming apparatus equipped with an automatically controlled electronic control mechanism and a clutch/brake unit for improving the straightness of the edge.

Generally, in this type of filament coil forming apparatus, as shown in Fig. 1, a filament wire a is wound around a core wire b at a constant speed, and at the same time the core wire b is moved at a constant speed in its longitudinal direction. By doing so, a coil part c having a constant pitch interval is formed, and after further winding a predetermined number of times, the core wire b
The filament coil e is rapidly moved to form a straight section following the coil section c, the so-called dove d.
is being molded. By the way, in the conventional filament coil forming apparatus, when forming the above-mentioned coil part and edge, the coil winding mechanism and core wire moving mechanism are mechanically driven and controlled through a combination of gears, pulleys, cams, etc. In order to synchronize the winding speed of the filament wire and the moving speed of the core wire for setting the pitch interval, number of windings, and gap length, extremely high precision adjustment is required.
Not only does the quality of the filament coil deteriorate due to poor adjustment of the equipment, but it also takes a lot of time to replace mechanical parts such as gears and pulleys when changing the pitch spacing, number of turns, or gap length settings.
Furthermore, since the filament wire is wound during the formation of the edges, there are problems such as a decrease in the linearity of the edges.

The present invention was developed to solve the above-mentioned problems, and it is possible to easily and quickly set the pitch interval, number of windings, and gap length of the filament coil, and it also has excellent linearity of the gap. It is an object of the present invention to provide a filament coil forming apparatus that can obtain high quality filament coils.

In order to achieve the above objectives, the filament coil forming apparatus of the present invention includes a coil winding mechanism that is driven by a first motor and winds a filament wire around a core wire, and a coil winding mechanism that is driven by a second motor. In a filament coil forming device having a core wire moving mechanism that moves the core wire in its longitudinal direction,
a first electronic control mechanism that includes a clutch/brake section in a transmission mechanism from the first motor to the coil winding mechanism and synchronizes the first and second motors to control pitch spacing of the coil; and a second electronic control mechanism that controls the operation of the clutch/brake unit to control the pitch length and number of turns of the coil, and the first electronic control mechanism includes a pitch interval setting unit of the coil. , said first
a first detection section that detects the rotation speed of the second motor; a second detection section that detects the rotation speed of the second motor; and a signal from the pitch interval setting section and the second detection section that detects the rotation speed of the second motor.
a first comparison section that compares a composite signal with a signal from the detection section and a signal from the first detection section; and a signal from the first comparison section to control rotation of the second motor. Consisting of a rotation control section,
A second electronic control mechanism in which the second electronic control mechanism compares a signal from a coil gap length setting section, a second detection section, and a signal from the gap length setting section and a signal from the second detection section. a comparison section, a coil winding number setting section, a third detection section that detects the winding number of the coil winding mechanism, and a third detection section that compares the signal from the winding number setting section and the signal from the third detection section. and the second comparison part of
The present invention is characterized by comprising a clutch/brake control section that controls the operation of the clutch/brake section based on the signal from the comparison section and the signal from the third comparison section.

An embodiment of the present invention will be described below based on the drawings.

2 and 3 show a filament coil forming device according to an embodiment of the present invention, FIG. 2 is a schematic diagram thereof, and FIG. 3 is a section from the first motor to the coil winding mechanism. FIG. In the figure, 1 is a filament coil forming device, 2 is a first motor, 3 is a coil winding mechanism, 4 is a second motor, 5 is a core wire moving mechanism, 6 is a transmission mechanism, and 7
8 is a clutch/brake unit, 8 is a first electronic control mechanism, and 9 is a second electronic control mechanism.

Therefore, the filament coil forming apparatus 1
The rotation of the main shaft 11 of the first motor 2 driven by the rotation control unit 10 is controlled by the clutch/brake unit 7, the transmission shaft 12, the transmission gear 13, and the belt 1.
Coil winding mechanism 3 via transmission mechanism 6 consisting of 4.
The rotation shaft 15 is rotated at a constant speed to wind the filament wire around the core wire, and the second motor 4
The rotation of the main shaft is transmitted to the capstan of the core wire moving mechanism 5 via the transmission gear, and this capstan is rotated at a constant speed to move the core wire in its longitudinal direction, thereby winding the filament wire and moving the core wire. A coil portion having a constant pitch interval is formed by this. Furthermore, when the number of turns of the filament coil reaches a predetermined value, the clutch/brake unit 7 is operated to stop the winding of the filament wire, while the core wire is continuously moved to form a gap, A filament coil is formed by the coil portion and the edge.

That is, the filament coil forming apparatus 1 includes:
In order to control the pitch interval of the filament coil, a pitch interval setting section 16, a first detection section 17,
The first electronic control mechanism 8 includes a second detection section 18, a first comparison section 19, and a second motor rotation control section 20. Then, the rotation speed of the first motor 2 is detected by a first detection unit 17 consisting of a first pulse signal generating disc film 21 and a first photocoupler 22 provided on the main shaft 11 of the first motor. and sends the detection signal to the first comparison unit 1.
Send to 9. At the same time, a composite signal of the rotational speed signal of the second motor 4 detected by the second detection section 18 consisting of a rotary encoder and a setting signal from the pitch interval setting section 16 is sent to the first comparison section 1.
Send to 9. Next, the first comparison section 19 compares both signals and sends a control signal to the rotation control section 20, so that the pitch of the filament coil becomes the value set by the pitch pitch setting section 16. The feeding speed of the core wire relative to the winding speed of the wire,
That is, the rotation speed of the second motor 4 is controlled. Further, the filament coil forming apparatus 1
In order to control the number of windings and the length of the filament coil, the blade length setting section 23, the second detection section 18, the second comparison section 24, the number of winding setting section 25,
The second electronic control mechanism 9 includes a third detection section 26, a third comparison section 27, and a clutch/brake control section 28. and the first motor 2
The rotational speed of the transmission shaft 12, that is, the filament wire, is detected by the third detection unit 26, which includes a second pulse signal generating disc film 29 and a second photocoupler 30 attached to the transmission shaft 12, which transmits the rotation of the transmission shaft 12. The rotation speed of the rotating shaft 15 is detected and the detection signal is sent to the third comparison section 27. At the same time, the setting signal from the winding number setting section 25 is transmitted to the third comparing section 27.
The third comparing section 27 compares both signals, and the number of rotations of the filament wire rotating shaft 15, that is, the number of turns of the filament wire is determined by the number of turns setting section 2.
When the number of windings set to 5 is reached, the clutch
A control signal is sent to the brake control section 28, and the clutch/brake section 7 is operated so that the clutch is disengaged and the brake is applied, thereby stopping the rotation of the filament wire rotating shaft 15. On the other hand, the control signal from the clutch/brake control section 28 is sent to the AND circuit 3.
1, the rotation speed of the second motor 4 detected by the second detection unit 18, that is, the detection signal related to the moving length of the core wire, is determined by the clutch/brake unit 7 operating as described above. while the rotation of the filament wire rotating shaft 15 is stopped, the signal is sent to the second comparing section 24 via the AND circuit 31. A setting signal from the edge length setting section 23 is sent to the second comparison section 24, and the second comparison section 24
These signals are compared in the comparison section 24 of
When the moving length of the core wire reaches the gap length set in the gap length setting section 23, a control signal is sent to the clutch/brake control section 28, and the clutch/brake is activated so that the brake is disengaged and the clutch is engaged. The section 7 is operated to restart the rotation of the filament wire rotating shaft 15.

Incidentally, a fourth detection mechanism 32 that detects a break in the core wire and a fifth detection section 33 that detects a break in the filament wire are incorporated in the core wire moving mechanism 5 and the coil winding mechanism 3, respectively. A detection signal is sent to the disconnection detection circuit 34, and when the core wire or filament wire is disconnected, the power to the first motor 2 and the second motor 4 is cut off by the signal from the disconnection detection circuit 34. At the same time, a buzzer 35 is designed to issue an alarm.

As described above, the filament coil forming apparatus of the present invention includes an electronic control mechanism that synchronizes the operations of the core wire moving mechanism and the coil winding mechanism, and a clutch provided in the transmission mechanism from the drive source to the coil winding mechanism.
Since it is equipped with an electronic control mechanism that controls the operation of the brake section, it is easy to operate by simply setting the desired setting values in the pitch interval setting section, number of turns setting section, and gap length setting section in the electronic control mechanism. Therefore, the pitch interval, number of windings, and gap length of the filament coil can be quickly and easily accurate, and since the winding of the filament wire can be stopped by the clutch/brake section when forming the gap, the straight line of the gap can be adjusted. It has excellent practical value, such as improved properties and the ability to stably provide high-quality filament coils.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a filament wire wound around a core wire, Fig. 2 is a schematic diagram of the filament coil forming device of the present invention, and Fig. 3 is a partial perspective view of the filament coil forming device of the present invention. be. DESCRIPTION OF SYMBOLS 1... Filament coil forming device, 2... First motor, 3... Coil winding mechanism, 4... Second motor, 5... Core wire moving mechanism, 6... Transmission mechanism, 7... Clutch. Brake part, 8...1st
electronic control mechanism, 9... second electronic control mechanism, 1
0...Rotation control section, 16...Pitch interval setting section,
17...first detection section, 18...second detection section,
19... First comparison section, 20... Second motor rotation control section, 23... Edge length setting section, 24...
...Second comparison section, 25...Number of turns setting section, 26...
...Third detection section, 27...Third comparison section, 28...
...Clutch/brake control section.

Claims (1)

[Scope of utility model registration request] a coil winding mechanism driven by a first motor to wind a filament wire around a core wire;
In a filament coil forming apparatus having a core wire moving mechanism driven by a first motor to move the core wire in its longitudinal direction, a clutch and a clutch are provided in a transmission mechanism from the first motor to the coil winding mechanism.
a first electronic control mechanism that synchronizes the first and second motors to control pitch spacing of the coil; and a clutch for controlling pitch length and number of turns of the coil;
a second electronic control mechanism that controls the operation of the brake section, and the first electronic control mechanism includes a coil pitch setting section and a first detection section that detects the rotation speed of the first motor. , a second detection section that detects the rotational speed of the second motor, a composite signal of the signal from the pitch interval setting section and the signal from the second detection section, and a signal from the first detection section. and a rotation control section that controls the rotation of the second motor based on a signal from the first comparison section. a length setting section, the second detection section, a second comparison section that compares the signal from the edge length setting section and the signal from the second detection section, a coil winding number setting section, and a coil winding section. a third detection section that detects the number of turns of the mechanism; a third comparison section that compares the signal from the number of turns setting section with the signal from the third detection section; and a signal from the second comparison section. and a clutch/brake control section that controls the operation of the clutch/brake section based on the signal from the third comparison section.