JPS6252943B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metallicon device, and more particularly to a metallicon device that improves the efficiency of metallicon with respect to a capacitor.

For metallized paper capacitors and metallized plastic film capacitors, in order to apply metallization to the capacitor element, heated and molten metal is placed on compressed air directed from a nozzle toward the end face of the capacitor element.
The injection method, which sprays metal while melting it with an arc, is often used.

Conventionally, when metallicon treatment is performed by an injection method, capacitor elements are aligned in a line using a jig and run in front of a nozzle or the like. The metal sprayed by a nozzle, etc. spreads in an almost fan-shape and coats the end face of the capacitor element, but by the time the sprayed metal reaches the end face of the capacitor element, it has spread beyond the area of the end face, so there is a lot of wasted metal sprayed. In many cases, the drawback was that the efficiency of metallcon treatment was reduced.

The present invention aims to improve the above-mentioned drawbacks and provide a metallicon device that can improve the efficiency of metallicon processing.

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

In FIG. 1, reference numeral 1 designates a potentiometer, to which a negative voltage is applied to one end, and to the other end grounded via a variable resistor 2. 3 is an arithmetic element, one input terminal is connected to the output terminal of the potentiometer 1, and the other input terminal is connected to the variable resistor 4. The variable resistor 4 has one end applied with a negative potential and the other end grounded, and is configured to provide a predetermined output as another input to the arithmetic element 3. Arithmetic element 3 has other inputs,
Output between input and potentiometer 1 =
This is a divider IC that has a relationship between KX and other inputs/input from a potentiometer (K is a constant). Further, the potentiometer 1 is connected to a switching circuit 5 which takes the output of the potentiometer 1 as one input. The switching circuit 5 has the output of the potentiometer 1 as one input,
It consists of a comparator circuit 8 whose other input is a voltage obtained by dividing a predetermined positive voltage by a variable resistor 6 and a resistor 7, and a relay 9 connected to the output of this comparator circuit 8. A control circuit 11 is connected to the arithmetic element 3 via a contact 10 of this relay 9. The control circuit 11 includes a contact 47 and a differential amplifier 48, and functions as an inverter or a buffer amplifier by switching the contact 47. Further, the positive voltage applied to the variable resistor 12 via the contact 10 is always transmitted to the input terminal of the control circuit 11 when no current flows through the coil 13 of the relay 9 and the relay 9 is inoperative. It's summery.
An output terminal of the control circuit 11 is connected to a preamplifier 15 via a start switch 14. A motor 16 has one end connected to the preamplifier 15, and the other end grounded via a resistor 17 and fed back to the preamplifier 15. In addition, in order to control the metal spraying operation, a metal contact forming section 18 having one input as the output of the potentiometer 1 is connected to the potentiometer 1. The metallicon forming section 18 has a comparison circuit 21 which has one input as the output of the potentiometer 1 and a voltage obtained by dividing a predetermined positive voltage by a variable resistor 19 and a resistor 20 as another input, and an output of this comparison circuit 21. It consists of a connected relay 22 and a metal spraying mechanism 25 that operates when a current flows through a coil 23 of the relay 22 and a contact 24 closes. Referring to the structural diagram shown in FIG. 2, the motor 16 is attached to a rectangular movable plate 26. The rotation of the motor 16 is controlled by the synchronized pulley 27.
and 28 and is transmitted to the shaft 30 via the belt 29. The shaft 30 is connected to the movable plate 26 by bearings 31 and 32.
is attached to. A worm 33 is attached to the end of the shaft 30, and the rotation of the worm 33 rotates the sliding piece 34 of the potentiometer 1, thereby changing the output of the potentiometer 1. Further, a screw gear 35 is attached to the shaft 30, and this screw gear 35
A part of the movable plate 26 passes through the center of the movable plate 26. As shown in FIG. 3, a shaft protruding from the turntable 36 is attached to the screw gear 35. The shaft 30 further includes a spur gear 3.
7 is attached and meshes with a spur gear 39 attached to the movable plate 26 via a ball screw nut 38. A ball screw 40 is inserted into the ball screw nut 38, and the rotation of the ball screw 40 moves the movable plate 2.
6 is adapted to move on a ball screw 40. The movable plate 26 is provided with linear ball bearings 41 and 42 to support the movable plate 26, and a linear ball 43 extending in the same direction as the ball screw 40 is mounted on these linear ball bearings 41 and 42. It is inserted into 42.

Next, the operation of the above embodiment will be described.

First, a taped capacitor element 44 wound in a circular shape is mounted on the turntable 36, as shown in FIG. Next, turn on the start switch 14 and connect the control circuit 11 and preamplifier 1.
Connect with 5. Moreover, the switching circuit 5 is
Since the input from the potentiometer 1 is still at a low voltage and the other inputs are at a higher voltage, no current flows through the coil 13 of the relay 9 due to the comparator circuit 8, and the contact 10 is connected to the variable resistor 12. A constant positive voltage is applied to the control circuit 11. This voltage value is set to be higher than the output voltage value from the arithmetic element 3. As shown in the figure, the contact 47 is in contact with the a-a' side, and the differential amplifier 48
The A input is grounded and a positive voltage is applied to the B input. At this time, the control circuit 11 acts as a buffer amplifier,
A high positive voltage is applied to the motor 16 via the preamplifier 15 to rotate the motor 16 at high speed. Since the motor 16 rotates at a high speed, the shaft 30 rotates quickly via the synchronized pulleys 27 and 28 and the belt 29. In response to the rotation of this shaft 30, the turntable 36 rotates at a high speed at a constant circumferential speed, and the movable plate 26 rotates at a constant circumferential speed as shown in FIG.
moves in the A direction at a high speed along the ball screw 40 and the linear ball 43. motor 1
When the potentiometer 6 rotates, the output of the potentiometer 1 increases, but the comparator circuit 8 uses this output as an input,
When the voltage divided by variable resistor 6 and resistor 7 exceeds a predetermined value compared to other inputs, coil 1 of relay 9
Apply current to 3. As a result, the contact 10 is connected to the arithmetic element 3 side, and from this point on, the motor 16 rotates at a low rotational speed corresponding to the output of the arithmetic element 3.
That is, when the contact 10 is connected to the variable resistor 12, the motor 16 is driven by the constant voltage applied to the variable resistor 12 and rotates at high speed, regardless of the output of the potentiometer 1. The output of the arithmetic element 3 is not transmitted to the motor 16 until the contact 10 is switched, and the output is transmitted to the motor 16 when the contact 10 is connected to the arithmetic element 3 side. By this point motor 1
6 turns contact 34 of potentiometer 1.
is sliding, and the output of arithmetic element 3 uses the output of potentiometer 1 at this point and shows the value determined by the relationship between KX and other inputs/input from potentiometer 1. This value is determined by the contact 34 of the potentiometer 1 as the motor 16 further rotates.
Since the output of the potentiometer 1 is a low negative voltage value and its absolute value is large compared to the case where the voltage is slid, it shows a lower value and is lower than the voltage applied to the variable resistor 12. It has become a value. Therefore, the motor 16, which had been rotating at a constant high speed until then, will now rotate slowly when the contact 10 is connected to the arithmetic element 3.

Thereafter, as the motor 16 rotates, the output of the potentiometer 1 increases, and since it is a negative voltage, the absolute value decreases. Therefore, the output of the arithmetic element increases according to the formula: output=KX other input/input from potentiometer 1. With this increased output as input, the motor 16 gradually rotates faster. Furthermore, the moving speed of the movable plate 26 and the rotational speed of the turntable 36 also increase.

Further, the output of the potentiometer 1 is one input of the comparison circuit 21 of the metallization unit 18, and when it reaches a predetermined value compared to other inputs, the comparison circuit 21 operates and current flows through the coil 23. , contact 2
4 is closed and the metal spraying mechanism 25 operates. Note that when the output of the potentiometer 1 reaches a predetermined value and the metal spraying mechanism 25 is operated, the outermost periphery of the capacitor element 44 that has been wound up reaches the nozzle 4.
5 to the turntable 36 at the moment of contact. This is variable resistor 19
This is done by determining the operation timing of the comparator circuit 21 by appropriately adjusting . The capacitor element 44 rotates together with the turntable 36, and the turntable 3
6 moves together with the movable plate 26, so the nozzle 4
The metal 46 from No. 5 is gradually sprayed onto the end face of the inner capacitor element 44 without waste. As the movable plate 26 moves due to the rotation of the motor 16, the output of the potentiometer 1 increases within the negative range and its absolute value decreases. Therefore, the output of the arithmetic element 3 increases due to the relationship: output×(absolute value of input from potentiometer 1)=constant. When the output of arithmetic element 3 increases, motor 1
6 also has a faster rotational speed, so the turntable 36 rotates faster, and the capacitor element 44 onto which the metal 46 is sprayed can always maintain a constant circumferential speed. Therefore, the amount of metal 46 sprayed onto the end face of the capacitor element 44 can be made constant, and the thickness of the metallicon can be made constant.

The metal spraying mechanism 23 is configured in advance so that the spraying of the metal 46 from the nozzle 45 stops when the perpendicular line drawn from the tip of the nozzle 45 to the turntable 36 comes into contact with the innermost circumference of the capacitor element 44 wound up. It is determined.

When the spraying of the metal 46 from the nozzle 45 stops, the contact 47 is switched to the bb' side, and the differential amplifier 48 is operated as an inverter. In addition, in order to automatically switch the contact 47,
For example, the position of the movable plate 26 is detected by a cam or the like, and the signal is transmitted to the contact point 47 using a latch relay or the like. When the differential amplifier 48 starts operating as an inverter, the output from the arithmetic element 3 is transmitted to the control circuit 11.
The polarity is reversed by , and the motor 16 begins to rotate in the opposite direction.

Due to the reverse rotation of the motor 16, the movable plate 26 moves in the direction B, which is opposite to the previous direction. motor 16
As the potentiometer 1 further rotates in the reverse direction, the output of the potentiometer 1 that is linked to the motor 16 changes from high to low output, and the comparator circuit 8 determines that the output from the potentiometer 1 is divided into voltages by the variable resistor 6 and the resistor 7. When it becomes less than a predetermined value compared to other inputs, no current flows through the coil 13 and the contact 10 switches to the variable resistor 12 side. As a result, a voltage is applied to the motor 16 through the variable resistor 12. At the same time, the contact 47 is switched to the a-a' side, and the differential amplifier 48 is operated as a buffer amplifier. Therefore, the motor 16 rotates in the forward direction and moves the movable plate 26 in the A direction. In this way, a metallicon of arbitrary thickness is formed on the end face of the capacitor element 44.

To completely stop the formation of metallic contact, when the contact 47 is connected to the b-b' side, the motor 16 rotates in reverse, and the contact 10 is connected to the variable resistor 12 side, the contact 47 is connected to the b-b' side. Stay connected to the side. Thereby, the movable plate 26 can be returned to a predetermined position. At this point, the contact 14 is switched to the ground side and the rotation of the motor 16 is stopped.

As described above, according to the present invention, metallization can be applied to the end face of a capacitor element without waste,
Moreover, since the circumferential speed of the capacitor elements arranged on the turntable is kept constant regardless of whether it is inside or outside, a metallicon with a constant thickness can be formed.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of an embodiment of the present invention, Fig. 2 is a part of a back view of an embodiment of the invention, and Fig. 3 is a part of a sectional view taken along line X-X' of an embodiment of the invention. FIG. 4 shows a part of a perspective view of the embodiment of the present invention, and FIG. 5 shows a top view of the movable plate in the moving state of the embodiment of the present invention. 1... Potentiometer, 3... Arithmetic element,
5... Switching circuit, 11... Control circuit, 1
6... Motor, 18... Metallicon forming part, 2
6...Movable plate, 36...Turntable, 44...
...Capacitor element, 46...Metal.

Claims (1)

[Claims] 1. A plurality of capacitor elements are attached to a turntable, and while the turntable is rotated and a movable plate on which the turntable is mounted is moved, metal is sprayed to coat the end faces of the capacitor elements. In the Metallicon device,
A potentiometer whose output changes according to the operation of the motor, an arithmetic element that takes the output of the potentiometer as one input and performs a division operation between it and other inputs to make the output, and the output of the potentiometer. A switching circuit that can perform switching operation as one input; a control circuit that receives either the output of the arithmetic element or the output of the constant output generation circuit as an input depending on the switching operation of the switching circuit; A metallicon device comprising: a motor that rotates or rotates in reverse; a turntable that rotates according to the operation of the motor; and a movable plate that moves according to the operation of the motor. 2. The metallicon device according to claim 1, wherein the capacitor element is taped, wound into a circular shape, and attached to a turntable. 3. In a metallcon device in which a plurality of capacitor elements are attached to a turntable, the turntable is rotated, and a movable plate on which the turntable is mounted is moved, metal is sprayed to coat the end face of the capacitor elements,
A potentiometer whose output changes according to the operation of the motor, an arithmetic element that takes the output of the potentiometer as one input and performs a division operation between it and other inputs to make the output, and the output of the potentiometer. A switching circuit that can perform switching operation as one input; a control circuit that receives either the output of the arithmetic element or the output of the constant output generation circuit as an input depending on the switching operation of the switching circuit; The motor that rotates or reverses rotation, the turntable that rotates according to the operation of the motor, the movable plate that moves according to the operation of the motor, and the output of the potentiometer as one input, and the input reaches a predetermined value. 1. A metallicon device comprising: a metallicon forming section that starts a metal spraying operation when the metallicon reaches the target. 4. The metallicon device according to claim 3, wherein the capacitor element is taped, wound into a circular shape, and attached to a turntable.