JPS62296924A - Control method for welding temperature of winding machine - Google Patents

Abstract

PURPOSE:To stabilize a welding temperature for welding each coil, to homoge nize the quality of the coil, and to improve its performance by controlling a welding hot air temperature of a self-welding winding which is brought to winding to a mandrel by a temperature detected value of the coil or the mandrel for winding the coil. CONSTITUTION:By heat in a mandrel 21, a thermoelectromotive force is generat ed in a thermocouple 90, and inputted a control part 101 through lead wires 93, 94 - slide-contact brushes 99, 100. The control part 101 executes an output signal processing corresponding to the thermoelectromotive force in the thermo couple 90, and also, controls a heating heater 40 by outputting its output signal to the heating heater 40, and blows hot air of a necessary temperature in the mandrel 21, to the mandrel 21 part.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method of controlling the fusion temperature of a winding machine used for forming coils used in the construction of optical pickups and the like.

[Prior Art] A coil used for optical pickup of an optical information recording/reproducing device that optically records information on a recording medium or reads it is required to have a required external shape and external dimensions due to its configuration. Particularly in the case of multiple winding, the winding process usually takes the shape of a barrel with a bulging center, so forming the outer shape to the required shape and dimensions is required.

Therefore, when forming a coil, after holding the lead wire from the wire supply section for forming the coil, winding is performed through the required spindle, and after winding, the lead wire is cut. Form the required multiple coils using a coil winding machine that discharges the coil after winding,
Furthermore, after setting the multiplex coil 5 on the upper side of the molding table 1 while holding it between the presser mold 2 as shown in FIG. A desired coil was formed by pressing both left and right sides of the coil 5 to form a coil of a desired shape and size.

However, according to the conventional coil forming method, the multi-wound coil 5 is sandwiched between the forming table 1 and the presser die 2, and the forming claws 3 and 4 are used to suppress the left and right sides of the coil 5, thereby forming the coil. The wires of No. 5 become frayed, the insulating coating of the wires is damaged or broken, and the terminal positions cannot be held constant.

Also, in the work process, the work of setting the multiple coil 5 wound by the winding machine between the forming table 1 and the presser mold 2 again, and taking out the coil 5 after forming by the forming claws 3 and 4 from the forming table 1. This method has disadvantages in that it requires complicated work such as work and lacks automation of work.

Therefore, in view of the drawbacks of the conventional method for forming coils used in optical pickup, we have developed a method in which the wires of multiple coils are not frayed, the coating is not ruptured, or the wires are disconnected, and the terminal positions are fixed at predetermined positions. A method for forming a coil used in an optical pickup, which can be formed into the required shape and dimensions at ℃, and which can promote ease of operation, precision, and automation. A method has been developed in which the metal core is molded according to the external dimensions required for the molding process, and then removed from the core metal.

4 to 6 show a method of forming a coil used for such optical pickup. FIG. 4 is an explanatory diagram showing the method of forming a coil, and FIG. 5 is a side view showing only the forming device. 6A to 6C are explanatory diagrams showing the coil forming process between the fixed and moving spindles.

First, in FIG. 4, to explain the main features of the device used for forming the coil, 10 is a fixed spindle, and a movable spindle 20 is disposed opposite to the fixed spindle 10 so as to be movable back and forth. and both spindles 10
．． 20 is held by a device base frame 27.

Further, a core metal 21 is installed in the axial center of the movable spindle 20 so as to be able to protrude and enter in the axial direction of the movable spindle 20, and a locking pin 22 for the wire 30 is attached to the outer periphery of the movable spindle 20. held through, and
A cylinder 24 in which the support ring 23 is fixed to the base frame 27 with a mounting bracket 34 at the outer circumference of the movable spindle 20
The support ring 23 is connected to the rod 24a.

The locking pin 22 is configured to be able to move back and forth along the axis of the movable spindle 20 as the contact cylinder 24 moves back and forth.

Furthermore, a lock 1+M l 1 for the wire 30 is provided on the spindle 10 on the fixed side, and a stop for locking the end 31a of the lead wire 31 from the supply section (not shown) of the wire 30 in the locking groove 11 is provided. The wire clamp 12 of the fixed spindle 10 is attached to the support arm 16 of the holding part 10a of the fixed spindle 10, and the fixed side and the movable spindle 10.
A heater 40 is disposed between the coils 20 and 20 while being held in the holding portion 28 of the large frame 27, and upper and lower forming blades 41 and 42 for forming the coil after being wound around the core metal 21 are movable vertically and back and forth. A support plate 2 is provided with an arm 70 for discharging the formed coil attached to the base frame 27 on the -L side of the winding position between the fixed side and the movable spindle 10.20.
The cylinder 72 is connected to the rod 73 of the cylinder 72 fixed to the cylinder 9, and is constructed so as to be freely movable.

The structure of the lower forming blades 41 and 42 will be further explained with reference to FIG. 45, and the kite 11 installed on the 1st side of this support 45, 46.4
7] - Take the molding blade 41.42 through the support member 51.52 to the slider 48.49 that moves +
(Kedaru.

Further, the slider 48, 49 is a rod 55a of a cylinder 55, 56 attached to a support arm 53, 54 protruding from the 1, - door portion of the support 45.

The cylinder 55.5 is connected to the connecting arm 57.58 protruding from the slider 48.49 to the cylinder 56a.
6 and the movable table 44 is connected to the frame 4.
3 is connected to a rod 59a of a cylinder 59 located on the side.

Furthermore, the connecting arms 57. of the sliders 48.49.
Stopper bins 61 and 62 can be accessed at 58, and respective stompers 63 and 64 are installed between the connecting arms 1 and 57 and 58.

As shown in FIG. 6, the core bar 21 of the movable spindle 20 is inserted into the guide groove 26 of the movable spindle 20 so as to be able to slide freely. The core bar 21 is always attached in the operating direction by protruding from the outer periphery of the moving spindle 20 and by elastically loading a spring 28 between the head 25a and a stow/bar (not shown) protruding from the outer periphery of the moving spindle 20. At the rear end of the core metal 21, there is provided a mechanism for pulling the core metal 21 in the direction of the non-acting force against the elasticity of the spring 28.
It is constructed by connecting stages (for example, air cylinders or mechanical stages, not shown in the drawings).

Therefore, when forming the coil 80 having the required shape and dimensions using the apparatus having the configuration described below, first, the wire clamp 12 is activated and the lead wire 31 supplied from the supply section of the wire 30 is Clamping (wire clamp 12
Then, the wire clamp 12 is moved to engage the lead wire 31 in the locking groove 11 of the spindle 10 on the fixed side.

In connection with this, the movable spindle 20 is moved forward, and in connection with this forward movement, the core bar 21 is pulled by its traction f.
As shown in FIG.
The tip of 5ε abuts against the end face of the spindle lO on the inner side;
Set it below.

The wire clamp 12 locks the lead wire 31 in the locking groove 11, then releases the clamp shape yE; and returns to the original device.

Thereafter, the fixed side and the movable spindle 20 are rotated to wind the wire 30 around the outer periphery of the core metal 21.

Further, by moving the supply side of the wire 30 in the +iij rearward direction of the core metal 21, the wire 30 can be wound in a thick manner around the outer periphery of the core metal 21 (see FIG. 6).

After reading the appropriate winding, move the national side and the moving spindle 10.
．． 20 is stopped, and the cylinder 24 is actuated to move the support ring 23 forward, thereby bringing the locking pin 22 to the forward end. ! ! After the wire clamp 12 is actuated to clamp the lead wire 31, the lead wire 31 is cut through a cutting blade (not shown). In connection with this cutting operation, the cylinder 59 is actuated to advance the movable table 44 so that the old molding blades 41 and 42 enter the L part of the core metal 21, and the cylinder 55 and 56 to move the sliders 48 and 49 one degree in opposite directions, respectively, to form the L-shaped blade 41 attached to the support member 51 and 52.
．． 42 is pressed against the coil 8o wound around the core metal 21,
The outer shape of this is molded into a predetermined outer shape and method.

Further, as the wire 30, a self-fusing wire provided with a fusing agent layer that fuses to the outer skin by heat is used, and the heating heater 4
By heating the stationary side and the movable spindle 30 at 0, the wire phase can be fixed by forming the two lower forming blades 41 and 42.

After this molding, the cylinders 55 and 56 are operated again, and the molding blades 41 and 42 are moved away from each other and returned to their original positions. At the same time, the cylinder 59 is activated, and the movable table 44 is moved back to its original position. to return to.

Further, in conjunction with the return operation of the upper molding blades 41, 42, the movable spindle 20 moves backward, and the core bar 21 retreats against the elasticity of the spring 28 via the pulling means. After removing the core metal 21 from the molded coil 80, the discharge arm 70 is lowered to drop the molded coil 80 downward, and the fixed side and movable spindle 10.20 are removed. It is placed on a submerged transport conveyor (not shown) on the side and transported to the required location.

Since the ejection arm 1.70 is clamped to the original position, the wire clamp 12 is activated and the lead &! The coil 80 can be successively formed by engaging the groove 11 and performing the same operations as described above.

[Problems to be Solved by the Invention] However, the core metal 21 in the above-mentioned coil forming method
In the process of pressing the wound coil 80 and shaping it into a predetermined outer shape and dimensions, the forming wire 30 of the coil 80 is a self-fusing adhesive layer provided with an adhesive layer that is fused to the outer skin by heat. The -L
The wires are fixed to each other by forming the blades 41 and 42, but the temperature adjustment method of the heating heater 40 for heating the +Mj wire 30 is as follows: Since the temperature of the hot air itself is measured and the temperature of the hot air itself is adjusted (C), the hot air that heats the coil 30 wound around the core metal 21 is affected by the atmosphere around the core metal 21. This is due to the drawback that the welding temperature of the wire 30 after being wound on the gold 21 cannot always be accurately controlled.

Therefore, the drawback of the unstable fusing temperature of the wire 30 is that the welding time of the wire 3o after winding around the core bar 21 varies, and due to such variation, there is an error in the required external dimensions of the formed coil 80. As a result, the molding of the coil 8o with the desired dimensions becomes unbalanced, the product precision decreases, and the performance of the optical pickup constructed using this is also affected. It had a

Therefore, the present invention has been made by focusing on the above-mentioned drawbacks in the method of controlling the fusion temperature in the winding machine used for forming this type of coil, and is aimed at accurately controlling the fusion temperature of the wire used to form the coil. The object of the present invention is to provide a method for controlling the fusion temperature in a winding machine, which can control the fusion temperature in a winding machine.

[L stage to solve the problem] The method of controlling the fusion temperature in the winding machine of the present invention detects the temperature of the coil or the core metal that winds the coil and controls the fusion temperature of the self-fusion winding wound around the core metal. It controls the temperature of the hot air worn.

[Function] In the present invention, the temperature of the hot air for fusion is controlled based on the detected temperature of the wire fusion 71 portion.

[Example] Hereinafter, an example in which the control method of the present invention is applied to a coil forming method using the winding machine shown in FIGS. 4 to 6 will be described in detail.

FIG. 1 is a cross-sectional view showing a main part of a control circuit for a heater 40 in a winding machine, and FIG. 2 is a front view of the same.

As shown in FIG. 1, a thermocouple 90 for detecting the temperature of the core metal 21 is installed in the core metal 21 of the movable spindle 20, which is disposed opposite to the stationary spindle 10.

Terminals 91 and 92 of the thermocouple 90 are connected to the moving spindle 2 through wiring holes 95 and 96 formed in the lead wire 20.
It is electrically connected to the annular end /[7,98 stretched around the outer periphery of the tip of 0.

Furthermore, the annular terminal 97,98 of said moving spindle 20
The tips of the sliding brushes 99 and 100 attached to the base frame 27 are pressed against each other, and both the sliding brushes 99 and 100 are electrically connected to the control section 101 of the heater 40.

Therefore, in the control circuit of the heating heater 40 having such a configuration, the heat in the core bar 21 causes the thermocouple 9 to
A thermoelectromotive force is generated at the thermocouple 90, and the thermoelectromotive force generated at the thermocouple 90 is transferred through the lead wire 93°94, the annular end/-97, 98, and the sliding brushes 99, 100 that are press-contacted thereto. , the control section 101 is powered manually, and this control section 1
01 performs output signal processing corresponding to the thermoelectromotive force in the thermocouple 90, outputs the output signal to the heating heater 40, and controls the heating heater 40. ing.

That is, when the temperature of the core metal 21 heated by the hot air of the heating heater 40 rises or lowers due to the influence of the atmosphere around the core metal 21, the change is detected by the thermocouple 9.
The change in thermoelectromotive force at 0 is detected and inputted to the control unit 101, and
A control signal is output to the heating heater 40, and hot air corresponding to the temperature drop of the core metal 21 is output to the heating heater 40.
0, air can be blown to the core metal 21 and the core metal 21 can be heated to a required temperature.

Therefore, according to the method of forming the coil 80 shown in FIGS. 4 to 6, the coil 80 wound around the core bar 21 is heated by the heating heater 40 associated with the compression forming process of the forming blades 41 and 42. The heating is controlled by the above-described control method for the heater 40, and the temperature of the core metal 21 can be stabilized, and variations in the welding time of the coil 30 wound around the core metal 21 can be eliminated, and h' It is possible to eliminate variations in the molded dimensions of the coil 80 due to the suppression molding of the F-forming blades 41 and 42, and to homogenize the quality of the product.

Incidentally, although an embodiment has been shown in which a thermocouple 9o is installed inside the core metal 21 in the control circuit of the heating heater described above,
It can also be implemented by incorporating a temperature detector capable of detecting the temperature of the core metal 21 or the coil 30 connected to the core metal 21 with 18 wires, or by placing it near the core metal 21.
It is a law.

Further, the lead wires 91 and 92 in the configuration shown in FIG.

[Effects of the Invention] According to the present invention, the coil phase no. , ' The fusing temperature for fusing lff1 can be stabilized, and the quality of the coil manufactured by the winding machine can be made uniform and the quality of the coil can be improved.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the method of the present invention, and is a partially cutaway top view showing the main part of a control circuit for a heater in a winding machine, FIG. 2 is a front view of the same, and FIG. Fig. 4 is an explanatory diagram showing a conventional coil forming method, Fig. 5 is a side view showing only the forming device, and Figs. 6a to 6C are coil forming steps between the fixed side and the moving spindle.
FIG. 10... 1-+1 fixed side spindle 11... Locking t+1j 12... Wire clamp 13... Cylinder head 20... Moving spindle 21... Core metal 22... Engagement 11 nip pin 23 ... Support ring 24 ... Cylinder 30 ... Wire 31 ... Lead wire 40 ... Heater 41, 42 ... 1-Lower forming blade 43 ... Frame 44 River moving table 45 ...・Strut 46.47...Guide groove 48.49...Slider 51.52...Support member 53.54...Support arm 55.56...Cylinder 57.58...Connection arm 59・... Cylinder 61.62 ... Stopper bin 63.64 ... Stopper 70 ... Discharge arm 80 ... Coil 90 ... Thermocouple 91.92 ... Terminal 93 . 94...Lead wire 95.96...Through hole 97.98...Annular end r-99, Zoo...Sliding brush 101...Control unit Fig. 2, Fig. 3, Fig. 5, Fig. 6 Figure (,) Cb)

Claims (1)

[Claims] (1) A method for controlling fusion temperature in a winding machine, which comprises controlling the temperature of hot air for fusion of a self-fusion winding wound around the core metal based on a temperature detection value of a coil or a core metal used to wind the coil. .