JPH01220428A - Method and apparatus for winding electrolytic capacitor element - Google Patents

Abstract

PURPOSE:To improve the operability of an apparatus by providing rotary encoders in moving passages of anode and cathode foils to be wound around winding cores, starting counting from a time point when leads pass lead detection sensors, stopping the core when the quantity of winding of the foils reach one corresponding to the capacity of an electrolytic capacitor element, and outputting a foil cut signal. CONSTITUTION:An anode foil 20, a cathode foil 21, and two insulating sheets 26 held by a holding member 5 are held on a winding core 28, and the core 28 is rotated to start winding of an electrolytic capacitor element. When leads 23, 24 respectively attached to the foils 20, 21 pass lead detection sensors 31, 32, the encoders 2, 3 start counting. When the foil 20 of the quantity set and stored in a winding controller is fed, the core 28 is temporarily stopped, and the foil 20 is cut by a cutter 29. The core 28 is again rotated to feed the foil 21, the core 28 is then stopped, the foils 10, 21 and insulating sheets 26 are held by a holding unit 5, the foil 21 and the sheets 26 are cut by a cutter 30 to match the foil 20, thereby providing the capacitor element.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a winding device for electrolytic capacitor elements, and in particular, it significantly simplifies the work of changing the setup of the device when winding capacitor elements with different specifications. The present invention relates to a winding device for electrolytic capacitor elements with improved reliability of the device.

2. Description of the Related Art Conventionally, an anode foil 20 wound up by a winding device for an electrolytic capacitor element is an aluminum foil 22 as shown in FIG.
The lead wires 23 are fixed at a constant distance a1 from each other perpendicularly to the lead wires 23, which are sequentially wound to a predetermined length and cut to form an electrolytic capacitor element 25 (see Fig. 8). .

The cut dimension 1 from the cut 20 a of the anode foil 20 to the lead wire 23 and the interval a 1 between the lead wires 23 are values determined by the capacitance of the electrolytic capacitor element 25 . The same applies to the cathode foil 21, and as shown in FIG.
The cut dimension 7!2 from to the lead wire 24 is a value determined by the capacitance of the electrolytic capacitor element 25.

The lead yA24 of the cathode foil 21 is as shown in FIG.
It is shorter than the lead wire 23 of the anode foil 20 and is shorter than the lead wire 23 of the anode foil 20.
The distance a2 between the lead wires 24 of one electrode foil 20 is longer than the distance a1 between the lead wires 23 of the anode foil 20.

As shown in FIG. 7, the front surface 20b and the back surface 2 of the anode foil 20 are
Overlap the insulating paper 26 on each side of 0c, and insulating paper 26 on the - side.
Referring also to FIG. 8, the electrolytic capacitor element 25 is formed by overlapping the cathode foil 21 on top of the cathode foil 21, sandwiching it in the slit portion 28a of the winding core 28, and winding it up.
3 and the lead wires 24 of the cathode foil 21 are made to face each other on the center line of the electrolytic capacitor element 25, and each lead vA2
The pitch P of 3.24 is set to various dimensions depending on the capacitance of the electrolytic capacitor element 25.

That is, as shown in FIG. 7, after winding is completed by the electrolytic capacitor element winding device, the anode foil 20 is cut by the cutter 29, and the cathode foil 21 and the insulating paper 26 are cut by the cutter 30. , cut dimension 1 from the cut 21a of the cathode foil 21 to the lead wire 24 of the cathode foil 21
2 and the cut dimension l from the cut 20a of the anode foil 20 to the lead wire 23 of the anode foil 20 is the electrolytic capacitor element 25.
Since the capacitance is determined according to the capacity of the electrolytic capacitor element 25, the anode foil 20 and the cathode foil 21 are initially set in a winding device according to their respective dimensions, and the electrolytic capacitor element 25 is wound up.

On the other hand, before the winding of the anode foil 20 and the cathode fI21 is started, the cutting operation of the anode foil 20 and the cathode foil 21 by the cutters 29 and 30 is completed. As shown in FIG. 9, this cutting operation causes the subsequent lead wire 23 to
This is executed when a signal indicating that the lead wire has been detected after passing through the lead wire detection sensor 31 is output.

For this reason, the conventional electrolytic capacitor element winding device 33 is
In order to ensure the winding accuracy, the winding speed of the winding core 28 cannot be set high, resulting in a drawback that the efficiency of the winding operation is low.

Further, in the conventional electrolytic capacitor element winding device 33, the following glue is placed at the position of the lead wire detection sensors 31, 32.
When the cutters 23 and 24 arrive, the cutters 29 and 30 operate at different timings to obtain a predetermined cut size Il, .
In order to obtain l, the idle roller 3
4 and 35 are arranged to be movable up and down to form a lead wire detection sensor 3.
The travel distance from 1.32 to cutter 29.30 was adjusted, and there was no other way. However, in this method, the distance between the lead wires 23 differs depending on the capacity of the electrolytic capacitor element, so it is necessary to adjust the position of the idle rollers 34 and 35 every time the capacity of the electrolytic capacitor element changes, which makes setup change work difficult. It required a lot of man-hours and considerable skill.

In addition, in order to ensure a range of movement adjustment for the idle rollers 34 and 35, the conventional electrolytic capacitor element winding device 33 is large and has a complicated mechanism, and furthermore, the cut size is 1. ．． 12
The disadvantage is that it is not possible to increase the dimensional accuracy of the

Purpose The present invention was made in order to eliminate the drawbacks of the above-mentioned prior art, and its purpose is to provide an anode foil and a cathode foil wound by a winding core in a winding device for an electrolytic capacitor element. A rotary encoder is installed on the travel path of the lead wire, and counting starts from the moment the lead wire passes the lead wire detection sensor. By providing a winding amount control device that outputs a signal to stop the core and cut the anode foil and cathode foil, it is possible to change the setup of the winding device for an electrolytic capacitor element when the capacitance of the electrolytic capacitor element changes. The purpose of the present invention is to significantly facilitate the operation of the winding device, improve the operating rate of the winding device, and improve the precision of cut dimensions. An object of the present invention is to reduce the size, simplify the structure, and improve operability of a winding device for an electrolytic capacitor element by making it possible to wind it with high precision.

Another object is to interlock a rotary encoder mounted on the travel path of the anode foil and cathode foil with a winding amount control device that controls the winding amount of the anode foil and cathode foil.
The winding speed of the anode foil and cathode foil can be changed in stages, increasing the winding speed of the electrolytic capacitor element.
The objective is to improve the productivity of electrolytic capacitor elements.

Configuration In short, the method of the present invention detects a lead wire by a lead wire detection sensor disposed on the travel path of an anode foil and a cathode foil formed in an electrolytic capacitor element, and from the time of detection, a Start counting the travel distance of the anode foil and the cathode foil by rotary encoders that rotate in contact with each other, and stop the travel of the anode foil or the cathode foil when the travel distance reaches a preset expected value. This is characterized in that the lead wire is cut with a hand and wound up with the lead wire facing the position of the wind.

In addition, the device of the present invention overlaps insulating paper on the front and back sides of the anode foil, and further overlays the cathode foil on one of the insulating papers, and then holds the anode foil, insulating paper, and cathode foil between them. a winding core to be wound; a lead wire detection sensor disposed on a travel path of the anode foil and cathode foil wound by the winding core to detect passage of the lead wires; A winding device for an electrolytic capacitor element comprising a cutter for cutting the anode foil and a cutter for cutting the cathode foil and insulating paper in an overlapping manner, each of which is provided in a running path of the anode foil and the cathode foil, respectively. a pair of rotary encoders that start counting and measuring the traveling distance of the anode foil and the cathode foil from the time when the lead wire passes the lead wire detection sensor; and outputs from the rotary encoder and the lead wire detection sensor. A winding amount control device configured to cut the anode foil, cathode foil, and insulating paper by the cutter when the anode foil, cathode foil, and insulating paper have been wound up to a winding amount corresponding to the capacity inputted and determined for each electrolytic capacitor. It is characterized by having the following.

The present invention will be explained below based on embodiments shown in the drawings. As shown in FIGS. 1 and 2, the electrolytic capacitor element winding device l (hereinafter referred to as the winding device) according to the present invention has the following features:
It includes a winding core 28, a lead wire detection sensor 31.32, a cutter 29.30, a rotary encoder 2.3, and a winding amount control device 4 (see also FIG. 3).

The winding core 28 is rotatably attached to the winding device 1, and is slid in the axial direction by a slide mechanism (not shown) in order to pull out the electrolytic capacitor element 25 after winding is completed. It is configured to be movable. Moreover, the slit portion 28a (see FIG. 7) formed in the winding core 28 appears when the electrolytic capacitor element 25 that has been wound up is pulled out from the winding core 28, and the anode 28a formed in the winding core 28 appears when the electrolytic capacitor element 25 that has been completely wound is pulled out from the winding core 28. 420, the cathode foil 21 and the insulating paper 26 are held between the slit portions 28a and begin to be wound again.

A slit 31a is formed in the lead wire detection sensor 31, and a photo sensor (not shown) has a light source (not shown) and a photoelectric element (not shown) facing each other across the slit.
is built-in. The lead wire detection sensor 31 is fixed to the winding device 1 while the anode foil 20 is inserted into the slit and the anode foil is kept in a state where there is no hindrance to the running of the anode foil. A slit 32a is similarly formed in the lead wire detection sensor 32, and a photosensor is built into the slit. The lead wire detection sensor 32 is fixed to the winding device 1 by inserting the cathode T321 into the slit and maintaining a state in which the cathode foil runs without any hindrance.

Furthermore, when the lead wire 23 passes the sensor 31 or when the lead wire 24 passes the sensor 32, a signal is outputted, and the signal is inputted to the winding amount control device 4 (FIG. 3). There is.

The cutter 29 is inserted into the winding device 1 so as to sandwich the anode foil 20.
When the anode foil 20 is wound onto the winding core 28 to a predetermined length, the cutter 29 is operated in response to a command from the winding amount control device 4 to cut the anode foil 20.

The cutter 30 is attached so as to be movable in parallel along the travel path of the cathode foil 21 in conjunction with the clamping member 5, and when the electrolytic capacitor element 25 is completed, the cathode foils 21 and 2 are overlapped by the clamping member 5. The sheets of insulating paper 26 are cut together.

The rotary encoder 2 consists of a main body part 2a and a rotating part 2b, and is further attached to the winding device 1 via a mounting arm 40 having a biasing force in one direction by a resilient member (not shown). The rotating part 2b contacts the roller 6 rotatably mounted on the winding device 1 in a pressed state, rotates smoothly as the anode foil 20 travels, and measures the amount of movement of the anode foil. It is now possible to do so.

The rotary encoder 3 consists of a main body part 3a and a rotating part 3b, and is further provided with a spring member (not shown) in one direction (
It is attached to the winding device 1 via a mounting arm 41 that has a biasing force (counterclockwise in the figure). The rotating part 3b is a winding device l
The roller 8 is rotatably attached to the roller 8, which is in pressure contact with the roller 8, and rotates smoothly as the cathode foil 21 travels, so that the amount of movement of the cathode foil can be measured.

As shown in FIG. 3, the winding amount control device 4 is connected to receive signals from the linear wire detection sensor 31.32 and the rotary encoder 2.3, and based on the input signal, The computer is configured to issue operating signals to the cutters 29, 30, the clamping member 5, and the winding core 28 at appropriate timings to centrally control these parts.

Function The present invention is constructed as described above, and its function will be explained below. As shown in FIG. 4, the anode foil 20 wound up by the winding device 1 has a lead wire 23 fixed to the anode foil connected to a lead wire detection sensor 31 and a cutter 2.
9, the electrolytic capacitor elements 25 are completed one by one while ensuring a predetermined dimension.

Here, the cut dimension 11 from the cut 20a of the anode foil 20 cut by the cutter 29 to the lead wire 23a and the distance a1 between the lead wires from the lead wires 23a to 23b are values determined by the capacitance of the electrolytic capacitor element 25. .

In FIG. 4, if the distance between the lead wire detection sensor 31 and the following lead wire 23c is x, the rotary encoder 2 starts counting from the time when the following lead wire 23c passes the lead wire output sensor 31. When the anode foil 20 is started and the anode foil 20 is moved to a distance corresponding to a, -xl stored in advance in the winding amount control device 4, the winding core 28
The anode foil 20 is then cut by the cutter 29.

As a result, the position of the lead wire 23a shown in FIG. 4 is replaced by the subsequent lead wire 23b, and the anode foil 20
The electrolytic capacitor element 25 can be wound up while keeping the cut dimension 11 from the cut 20a to the lead wire 23 constant without any cumulative error.

Similarly, in the case of the cathode foil 21 wound up by the winding device 1, as shown in FIG. The electrolytic capacitor elements 25 are successively fed in while maintaining X2 and cut size 12 to complete the electrolytic capacitor elements 25 one by one.

Cut 2 of cathode 7tJ21 cut by cutter 30
The cut dimension 12 from 1a to the lead wire 24a and the distance a2 between the lead wires from the lead wires 24a to 24b are as follows:
This value is determined by the capacitance of the electrolytic capacitor element 25.

In the state shown in FIG. 5, the sensor 32 and the following lead wire 2
If the distance to 4C is x2, then the following lead wire 24
The rotary encoder 3 starts counting from when C passes the sensor 32, and the cathode foil 21 reaches a distance corresponding to a2-x2, which is stored in the winding amount control device 4 in advance.
The winding by the winding core 28 is stopped at the point where the cutter 30 is run, and the holding member 5 holds the cathode foil 21 and then the cutter 30
And the cathode? Cut 121. The cutter 30 cuts the cathode foil 21 after the cutter 29 cuts the cathode foil 20 and after the cathode foil 21 is wound up by a predetermined amount.

As a result, the following glued wire vA24b replaces the position of the lead wire 24a shown in FIG.
The cut dimension 12 from the cut 21a of No. 1 to the lead wire 24 is always kept constant without cumulative error, and the electrolytic capacitor element 25 is
can be rolled up.

Next, the operating sequence of the winding device 1 will be explained with reference to FIG.

In the first step, the anode foil 20, the cathode foil 21, and the two insulating papers 26 held by the holding member 5 are held by the slit portion 28a formed in the winding core 28.

In the second step, the holding member 5 releases the anode foil 20, the cathode foil 21, and the two sheets of insulating paper 26 that have been held between the holding members 5, moves in the direction of arrow A, and waits.

In the third step, the winding core 28 starts rotating and winding of the electrolytic capacitor element 25 starts.

In the fourth step, the subsequent lead wire 23 passes through the lead wire detection sensor 31, and the other subsequent lead wire 24 passes through the lead wire detection sensor 32.

In a fifth step starting from the end of the fourth step, the rotary encoders 2 and 3 each start counting.

In the sixth step, the amount of anode foil 20 stored and set in the winding amount control device 4 is fed out, and the winding core 28 is temporarily stopped.

In the seventh step, the cutter 29 operates to cut the anode foil 20.

In the eighth step, the winding core 28 rotates again, and the winding amount control device 4
A preset amount of cathode foil 21 is fed out to the winding core 2.
8 stops.

In the ninth step, the clamping member 5 moves in the direction of arrow B to clamp the anode foil 20, the cathode foil 21, and the two sheets of insulating paper 26.

In the tenth step, the cutter 30 cuts the cathode foil 21 and the two sheets of insulating paper 26.

In the eleventh step, the cut portion 21a is fixed with adhesive tape to finish the electrolytic capacitor element 25.

In the twelfth step, from the electrolytic capacitor element 25 to the winding core 28
is pulled out, and the winding core 28 is waiting at the rear.

In the thirteenth step, the clamping member 5 is connected to the anode foil 20 and the cathode foil 21.
Then, while holding the two sheets of insulating paper 26, it moves in the direction of arrow A, and the slit portion 28a of the winding core 28 grips the anode foil 20, the cathode foil 21, and the two sheets of insulating paper 26, and returns to the first step.

The electrolytic capacitor elements 25 are automatically manufactured one after another by repeating the winding operations from the first step to the thirteenth step. Also, the anode foil 20 by the winding core 28. Cathode foil 21
The winding speed of the insulating paper 26 is set to the maximum speed until the fifth step and the first half of the sixth step, and the winding speed is set to a low speed in the second half of the sixth step and the eighth step to ensure positioning accuracy. By setting a program that makes it possible to improve the productivity of the electrolytic capacitor element 25 more than in the conventional winding device 33.

Effects The present invention provides a winding device for an electrolytic capacitor element as described above, in which a rotary encoder is disposed on the travel path of the anode foil and cathode foil wound by the winding core, and the lead wire passes through the lead wire detection sensor. Counting is started from the point in time, and when the amount of winding corresponding to the capacity of the electrolytic capacitor element being wound is reached, a signal to stop the winding core and to cut the anode foil and cathode foil is output. Equipped with a winding amount control device, when the capacitance of an electrolytic capacitor element changes, the work of changing the setup of the electrolytic capacitor element winding device is significantly facilitated, improving the operating rate of the winding device and improving the precision of cut dimensions. Furthermore, it is possible to wind up electrolytic capacitor elements of various capacities with high accuracy without changing the travel paths of the anode foil and cathode foil, and the winding device for electrolytic capacitor elements can be downsized. This has the effect of simplifying the structure and improving operability.

In addition, since the rotary encoder installed on the travel path of the anode foil and the cathode foil and the winding amount control device that controls the winding amount of the anode foil and the cathode foil are linked to each other, the winding of the anode foil and the cathode foil is The speed can be changed step by step,
It becomes possible to increase the winding speed of the electrolytic capacitor element, and the effect of improving the productivity of the electrolytic capacitor element is obtained.

[Brief explanation of the drawing]

1 to 8 relate to embodiments of the present invention, in which FIG. 1 is a perspective view showing the main parts of a winding device for an electrolytic capacitor element, and FIG.
The figure is a front view showing the main parts of the electrolytic capacitor element winding device, Figure 3 is a block diagram of the input/output section of the electrolytic capacitor element winding device, and Figure 4 is the electrolytic capacitor element winding device for anode foil. Figure 5 is a diagram of related dimensions when the cathode foil is set in the winding device for an electrolytic capacitor element, Figure 6 is a partial plan view of the anode foil, and Figure 7 is a diagram of the dimensions when the foil is wound up. 8 is a perspective view showing the completed state of the electrolytic capacitor element, and FIG. 9 is a front view of essential parts of a conventional electrolytic capacitor element winding device. It is. 1 is a winding device for an electrolytic capacitor element, 2.3 is a rotary encoder, 4 is a winding amount control device, 20 is an anode foil, 20a
20b is the front surface, 20c is the back surface, 21 is the cathode foil,
21a is a cut, 23.24 is a lead wire, 25 is an electrolytic capacitor element, 26 is an insulating paper, 28 is a winding core, 28a is a slit portion, 29.30 is a cutter, 31.32 is a lead wire detection sensor, and 33 is a conventional Winding device for electrolytic capacitor elements,
36.38 is the driving route. Patent applicant: JCC Engineering Co., Ltd. CKC Engineering Co., Ltd.

Claims (1)

[Scope of Claims] 1. A lead wire is detected by a lead wire detection sensor disposed on the travel path of an anode foil and a cathode foil formed in an electrolytic capacitor element, and from the time of detection, a lead wire is detected on the anode foil and cathode foil. Start counting the travel distance of the anode foil and the cathode foil by rotary encoders that rotate in contact with each other, and stop the travel of the anode foil or the cathode foil when the travel distance reaches a preset expected value. A method for winding an electrolytic capacitor element, which is characterized in that the lead wire is cut with a hand and the lead wire is wound up with the lead wires facing each other in the proper position. 2. A winding core for sandwiching and winding the anode foil, insulating paper, and cathode foil with insulating paper overlaid on the front and back sides of the anode foil, and cathode foil further overlaid on one of the insulating papers; , a lead wire detection sensor that is disposed on the travel path of the anode foil and cathode foil wound by the winding core and detects passage of the lead wires; and the anode foil wound around the electrolytic capacitor element by the winding core. a cutter for cutting the
A winding device for an electrolytic capacitor element is provided with a cutter for stacking and cutting the cathode foil and the insulating paper, and the cutter is disposed in the travel path of the anode foil and the cathode foil, respectively, and the cutter is arranged in the travel path of the anode foil and the cathode foil so that the travel distance of the anode foil and the cathode foil is determined by A pair of rotary encoders that start counting and measuring from the time when the lead wire passes the lead wire detection sensor, and a capacitance determined for each electrolytic capacitor that receives the outputs from the rotary encoder and the lead wire detection sensor. an electrolytic capacitor comprising: a winding amount control device configured to cut the anode foil, cathode foil, and insulating paper with the cutter when the anode foil, cathode foil, and insulating paper are wound up to a winding amount corresponding to Element winding device.