JPH01302811A - Take-up device for capacitor element and similar element - Google Patents

Abstract

PURPOSE:To make it possible to automate the process of making an alignment body of elements without manual operation by providing a sensor for obtaining rotation information of a wound core, a sensor for obtaining the position information of a lead, a judgement circuit for judging the array state of leads, and means for stopping the wound core at a position suitable for removing elements. CONSTITUTION:This device includes a sensor such as a rotary encoder 4 capable of obtaining rotation information of a wound core 1, a sensor 5 for obtaining position information of the lead 11 for the wound core by detecting the lead 11 of the element 10 while in rotation, a judgment circuit for judging the array state of leads 11 on the basis of the output from the sensor 5, the rotary encoder 4 and the output corresponding to the pattern of the lead lines 11, a means 3 for stopping the wound core 1 at a position appropriate for removing the element 10 on the basis of the output from the judgment circuit. In addition, an arm 7 for carrying the element 10 having a chuck 6 in its front end taken up, a hot press device 8 for pressing the element 10 while the element 10 is being carried, and an alignment device for aligning the element 10 at an equal space by moving a mount plate 9 every one pitch in turn are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for manufacturing a film capacitor or a film noise filter.

(Prior art) Generally, plastic film capacitors are made by alternately overlapping a pair of strip-shaped dielectric foils such as plastic film and a pair of strip-shaped conductor foils such as aluminum foil. The device is formed by winding the conductor foil around the conductor foil, and in the middle of the winding, each lead wire is connected to the strip-shaped conductive foil by a method such as welding.

Also, film noise filters are made of plastic
It is made using a method similar to that of film capacitors, in which a pair of strip-shaped dielectric foils such as plastic film and a pair of strip-shaped conductor foils such as aluminum foil are alternately layered to create a cylindrical core. In the middle of the winding, two wires are connected to the beginning and end of the winding of one strip-shaped dielectric foil, which will become a current-carrying conductor, and the other strip-shaped conductor foil will become a grounding conductor. A single lead wire is connected to the beginning or end of the winding to form an element.

These film capacitors or film noise
An automatic winder is used to wind up the filter element.

As shown in FIG. 5, the automatic winding machine has a roll 41 wound with a band-shaped dielectric foil and a roll 42 wound with a band-shaped conductive foil.
Each layer supplied from the winding core l is passed through a guide roller 43
It is equipped with a lead wire connecting device 44 that connects the lead wire to the strip-shaped conductive foil during winding.

The winding core l consists of a cylindrical rod with grooves, and the beginning of winding of four sheets of foil, stacked one on top of the other, is inserted into the grooves, and when the winding is finished, the end of the foil is cut, and the plastic After the end of the film is thermally welded, the winding core 1 is moved back and the wound element is removed.

Elements produced through such a winding process are clamped (tightened) to stabilize their electrical characteristics.

This clamping process involves arranging about 20 wound elements 10 at regular intervals as shown in FIG. After creating an array 12 of elements 10, it is crushed and clamped flat using a hot press method.

Each of the clamped elements 10 is immersed in a thermosetting epoxy resin as an array, and then subjected to a molding process in which heat treatment is performed to complete the assembly.

(Problems to be Solved by the Invention) Prior to such a molding process, the process of creating an array of elements 12 shown in FIG. 6 was performed mostly manually.

That is, the element 10 removed from the automatic winding machine and collected in a saucer is placed so that two lead wires 11 are placed at both ends in the case of a capacitor (in the case of a noise filter, two lead wires 11 are placed at both ends). Lightly crush the wound element 10 with your fingertips, and then lay the leads parallel to the strip-shaped base plate 9 so that the lead wires 11 are arranged at both ends and the third lead wire 11 is arranged in the center. The line +1 portion was pasted with adhesive tape 13.

(Means for Solving the Problems) Therefore, the present invention was devised to automate the process of creating such an array of elements without relying on manual labor, and the present invention has been devised to automate the process of creating an array of elements as described above, without relying on manual labor. A rotary encoder rotates in conjunction with the winding, and detects the lead wire during winding.
An optical sensor is installed to obtain information on the angular position of the lead wire relative to the winding core, and the winding core is stopped at an angle suitable for removal, and the lead wire is held in place by a chuck attached to the tip of the arm. Retract the winding core from

Then, the arm is rotated to transport the element to a hot press machine, and the cord is hot pressed while the lead wire is held between the chucks.Then, the arm is rotated further and the cord is placed on the plywood. The structure is such that an array is automatically created by transporting the device, opening the chuck, and arranging the devices on a plywood board.

(Example) As shown in FIG. 1, in an automatic winding machine, a rotary encoder 4 that rotates in conjunction with the winding core 1 is provided on a winding core 1 connected to a motor 2 through a clutch/brake 3. , during winding, the lead wire 11 protruding from the element 10
A fiber optic optical sensor 5 is provided for detecting.

Furthermore, it has a chuck 6 at the tip, and the wound element 10
It is equipped with an arm 7 for conveying.

A hot press device 8 is provided for hot pressing the device 10 while the device 10 is conveyed by the arm 7. At the end of the conveyance of the arm 7, a base plate 9 is sequentially moved by l pitch. Hot pressed element 1
An alignment device is provided for arranging the zeros at equal intervals.

Roughly, based on the output of the optical sensor 5, the clutch
A control circuit is provided to control the brake 3 and stop the winding core 1 at an appropriate angular position.

As shown in FIG. 2, the control circuit is a parallel circuit that uses the pulse output a of the rotary encoder 4 as a shift pulse.
Serial-in-parallel to which the serial output of the first shift register 22 is applied, using the pulse output a of the rotary encoder 4 as a shift pulse.・
an out (S1/PO) second shift register 23;
A frequency dividing circuit 21 is provided which divides the frequency of the pulse output a of the rotary encoder 4 into half.

Further, when the output C of the optical sensor 5 falls, the first monostable multivibrator 26 generates the pulse output e, and when the output e of the first monostable multivibrator 26 falls, the second monostable multivibrator 26 generates the pulse output e. A second monostable multivibrator 27 that generates a pulse output f, an AND circuit 28 to which the output C of the optical sensor 5 and the output of the frequency dividing circuit 21 are applied, and a pulse output d from the AND circuit 28. A Johnson counter circuit 24 is provided, and the count value is cleared to zero by the output f of the second monostable multivibrator 27.

Note that the output e of the first monostable multivibrator 26 is used as a load pulse for the first shift register 22.

Among the many parallel outputs in the second shift register 23, an ant circuit 29 is provided which takes the AND of the outputs generated when the lead wires of the element 10 have a proper pattern. The output of 29 is used for clutch/brake control.

(Function) After the four stacked foils have been wound up a predetermined number of times by the winding core l, the stacked foils are cut and the ends of the plastic film are heat welded, without any roughness. When the winding core l continues to rotate, the rotary encoder 4 generates a pulse output a as shown in the waveform diagram of FIG. 3, the lead wire passes in front of the optical sensor 5, and the lead wire 11
The optical sensor 5 generates an output C every time it detects.

a - The pulse output a of the tally encoder 4 is directly converted to 2
The signal is applied as a shift pulse to the two shift registers 22 and 23, and is frequency-divided by the frequency divider circuit 21 and guided to the AND circuit 28 as a pulse b having a half frequency.

During the period when the lead wire passes in front of the optical sensor 5, an output C is generated from the optical sensor 5, and a pulse d whose frequency is divided by 2 is sent to the Johnson counter via the AND circuit 28. It is applied to circuit 24 and counted.

The Johnson counter circuit 24 receives the applied pulse d
Since this is a counter circuit in which one of the ten outputs (in the case of a decimal counter) is at a high level depending on the number of outputs, one output corresponds to the period in which the output C of the optical sensor 5 was occurring. produces a high level output at the terminal.

Then, when the output of the optical sensor 5 falls, the first
triggers the monostable multivibrator 26 to generate a first pulse output e, and when this first pulse output e falls, triggers the second monostable multivibrator 27 to generate a second pulse output f. occurs.

This first pulse output e loads the count value of the Johnson counter circuit 24 into the first shift register 22, and then the second pulse output f causes the count value of the Johnson counter circuit '#i24 to become zero. Clear to.

At this time, the value loaded into the first shift register 22 is half the number of pulses b of the pulse output a of the rotary encoder 4, and is the value at the center of the period t during which the output of the optical sensor 5 was generated. corresponds to

Therefore, a value corresponding to the center of the output of the optical sensor 5 can be loaded into the first shift register 22 regardless of whether the time width t in which the output C of the optical sensor 5 occurs is wide or narrow.

In this way, the lead wire 11 is
Each time it is detected, the center value is loaded into the first shift register 22, and the value is loaded into the second shift register 23.
I'm going to shift it to.

Outputs corresponding to the pattern of the arrangement state of the lead wires 11 appear in a flowing manner at the many parallel outputs of the second shift register 23 of the serial-in-parallel-out type, so that the output corresponding to the optimal pattern appears. When the signal appears, an output is generated in the AND circuit 29.

The output of the AND circuit 29 is used to control the clutch/brake 3 of the core 1, and the output of the AND circuit 29 releases the clutch and applies the brake to stop the core 1.

Then, the chuck 6 of the arm 7 is moved to the winding core 1, and after pinching the lead wire 11 of the wound element 10, the winding core l is moved back, and the wound element IO is supported by the chuck 6. .

Next, move the arm 7 to the hot press device 8,
After hot-brushing the elements 1O supported by the chuck 6, they are moved to an alignment device, and the elements 10 are placed on the base plate 9 so as to be lined up, and the chuck 6 is opened.

By repeating this series of operations, the wound elements 10 are arranged on the base plate 9.

Note that if an output corresponding to the optimal pattern does not appear among the multiple parallel outputs of the second shift register 23, no output is generated in the AND circuit 29, so in that case, the element 10 is defective. Based on this judgment, the winding core 1 is retreated and the element 10 is dropped without being pinched by the chuck 6.

Note that when the optical sensor 5 detects the lead wire 11, if it is difficult to detect the lead wire 11 because the light beam is reflected from the winding core 1, the winding core 1 is moved back halfway and then the lead wire 11 is detected. All that is needed is to detect line 11.

(Other Embodiments) Even if the pattern of the lead wires of the element 10 deviates from the optimal pattern, if the deviation is allowed to some extent, the second shift register 23 as shown in FIG. OR circuits 31, 32, and 33 are provided so as to pass outputs near the output corresponding to the optimal pattern among the outputs appearing in the large number of parallel outputs of the OR circuits 31.
The outputs of 32 and 33 can be ANDed in the AND circuit 29, and the clutch/brake 3 can be controlled by the output of the AND circuit 29.

[Brief explanation of the drawing]

1 is a perspective view showing one embodiment of a winding device for capacitor elements and similar elements of the present invention, FIG. 2 is a block diagram of a control device used in the winding device shown in FIG. 1, and FIG. The figure is a waveform diagram used to explain the operation of the control device, and FIG. 4 is a block diagram showing another embodiment of the rv+ control device.
Fig. 5 is a schematic diagram showing an example of a conventional automatic winding machine;
The figure is a plan view showing an array of capacitor elements and similar elements, and the same parts are represented by the same symbols throughout the figures. l... Winding core 2... Motor 3... Clutch/brake 4... Rotary encoder 5... Optical sensor 6... Chuck 8... Hot press IO... Element 11...・Lead wire 21...L/2 frequency divider circuit 22...Parallel-in/serial-out shift register 23...Serial-in/parallel-out shift register 24...Johnson counter Circuit 28.29...AND circuit

Claims (2)

[Claims] (1) A sensor such as a rotary encoder that obtains rotation information of the winding core, a sensor that detects the lead wire of the element during winding and obtains position information of the lead wire with respect to the winding core, and the output of the sensor is transmitted to the rotary encoder. and a determination circuit for determining the arrangement state of the lead wires based on the output corresponding to the pattern of the lead wires; and means for stopping the winding core at a position suitable for removing the element based on the output of the determination circuit. A winding device for capacitor elements and similar elements, comprising: (2) According to claim (1), the above-mentioned output is counted during a period in which the output of a rotary encoder or the like and the output of a sensor are generated, and an output corresponding to the center of the lead wire is provided. winding device for capacitor elements and similar elements.