JPH10172871A - Manufacture of electrode terminals for electrolytic capacitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture electrode terminals for electrolytic capacitor with good efficiency and without producing defectives, and to increase productivity. SOLUTION: Cp lines of leads 1 are supplied to a tape base 2. The leads 1 are adhered to the tape base by an adhesive tape 3 and are cut by a cutter 4 in a specified length and in a shape suitable for welding. The operations are repeated to set pieces of line in parallel and with a space (lead supplying process). Then, cut ends of the leads 1 continuously transferred are supplied with A1 lines of tabs 10, are cut in a specified length and are made contact with the end of the lead and integrated by welding by a welding device (tab supplying and joining process B). The tabs 10 transferred by running of the tape base 2 are rolled and formed in a flat-shaped part 20 by a punch (press process C). After that, periphery of the flat-shaped part 20 is removed by a cutter (cut process D). Then, burrs on the cut part of the flat-shaped part including the tabs 10 are removed (trimming process E). The electrode terminals 11 treated in this way are wound continuously as a chain of electrode terminals being taped on the tape base 2 around a reel and are treated at washing process F and chemical process G.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electrode terminal with a lead wire used for an electrolytic capacitor.

[0002]

2. Description of the Related Art Conventional electrode terminals for electrolytic capacitors are:
It is used by pressing the end using an aluminum wire made of aluminum bar to form a flat part, welding the lead wire to the other end, forming a oxidized film on the flat part by chemical conversion treatment, A capacitor element is welded to the flat portion to form an electrolytic capacitor. And this electrode terminal, after cutting the Al wire having a circular cross section to a fixed size, welding a CP wire serving as a lead wire to one end and pressing the other end while leaving a circular cross section to form a flat portion to form a peripheral portion. A manufacturing method of cutting and shaping is adopted.

[0003]

According to this conventional method, in assembling an electrode terminal of an aluminum electrolytic capacitor, a lead wire after welding, pressing, washing, and forming is supplied by a parts feeder, a straight feeder, or the like. No tsuya,
The lead wire is supplied by welding, pressing, washing, forming and taping after forming because the lead wire is often dropped or the lead wires are rubbed and contaminated. However, in this method, taping is performed after cleaning and chemical formation, so workability is poor, the number of processes increases, cost increases, and economic loss occurs.In addition, mechanical equipment for transferring processes of materials during welding and pressing is also required. It becomes complicated, and even in the cleaning and chemical conversion processes, a canning process for lead wires for cleaning and chemical conversion is required,
Also in terms of quality, the press cut direction of the lead wire and the tab flat part is not constant, and there is a defect that the Al foil breaks during the caulking process at the time of assembling the capacitor, resulting in a defective product. Inevitably, there is a problem that the operation is complicated and the operation rate and the yield are reduced. The present invention is intended to eliminate these conventional disadvantages, and eliminates the occurrence of defective products by using a tape base as a material transfer jig, enables efficient production, greatly improves workability, and simplifies manufacturing equipment. It is an object of the present invention to provide a method for manufacturing an electrode terminal for an electrolytic capacitor which is economical and possible.

[0004]

SUMMARY OF THE INVENTION The present invention provides a lead wire having a C
A lead for supplying a P wire to a tape base, attaching the lead wire to the tape base with an adhesive tape, and cutting the product in a predetermined length with a cutter into a shape suitable for welding, and sequentially repeating the process of attaching the lead wire at intervals in a parallel manner. A wire supply step, and a tab supply connection step of supplying an Al wire of a tab to a cut end of the continuously transferred lead wire, cutting the lead wire to a predetermined length, and bringing the lead wire end close to butting and welding and integrating. And, furthermore, the electrode terminal processed in the press cut step of rolling and forming the tab conveyed by the tape-based traveling into a flat portion with a punch, and the trimming step of deburring a peripheral cut portion of the tab. The electrode terminals are continuously wound as a series of electrode terminals as they are taped on the tape base, and are subjected to cleaning and chemical conversion treatment.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the method of the present invention, a Cp wire is fed into a tape base moving intermittently in a lead wire supplying step at a fixed size by a feed clamp, and is adhered and fixed with an adhesive tape using a Cp guide. The cutter is cut into a shape in which arc is easily generated, for example, a shape having a tapered tip. Then, in the tab supply connection step, an Al wire is inserted at a predetermined position into a fixed-size feeding chuck by a feeding clamp with respect to a Cp line sequentially sent on a tape base, and when the chuck grips the Al wire, a half-die is formed. Raised the Al wire,
After the wire nozzle goes down and cuts the Al wire, the Cp wire is clamped and fixed by the clamper, and when the Al wire is applied by the welding means while approaching the Cp wire, the arc jumps and the welded surface is welded and welded. Then, the Cp wire and the Al wire are butt-welded with the molten metal. Next, the Al wire sent by the tape base is converted into C in the press cutting process.
Hold it with a p-clamper, press the tip of the Al wire with a rolling punch to form a flat part, and cut the rolling part of the flat part, or perform this pressing and cutting at the same time for a certain amount. Dimensions. Furthermore, the tape base is wound on a reel through a trimming process of pressing the punched part of the flat part with the lead wire that is attached and transferred to the tape base again, and shaping the burr generation part,
By performing the cleaning step and the chemical conversion step, the aluminum electrode terminal with the lead wire can be efficiently produced, and the operation rate and the yield can be greatly improved without material loss.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 6 by supplying a Cp wire of a lead wire 1 to a tape base 2,
A lead wire supplying step A for attaching the lead wire 1 to the tape base 2 with an adhesive tape 3 and cutting the lead wire 1 into a shape having a predetermined length suitable for welding with a cutter 4 at a time, and attaching the lead wires 1 at intervals. The Al wire of the tab 10 is supplied to the cut end of the lead wire 1 which is continuously transferred, cut into a predetermined length, and is brought into close proximity with the end of the lead wire and welded and integrated by the welding device 12. Supply connection step B, and press step C for rolling and forming the tub 10 conveyed by traveling of the tape base 2 into a flat portion 20 with a punch 22.
And a cutting step D for cutting off the peripheral portion of the flat portion 20 with a cutter 24 and a trimming process E for removing burrs around the flat portion 20 including the tab 10 by using a tape base. The electrode terminals for the electrolytic capacitor can be efficiently manufactured by successively winding them on a reel as a series of electrode terminals as they are being taped at 2, and treating them in the washing step F and the chemical formation step G.

The supply process of the lead wire 1 and the Al wire 10 is carried out by wire feed clamps 5
16 be one that through supply, given after the length sent to the cutter 4 or half die 4 ₁ to cut well and stuck tape 3 lead 1 to the tape base 2 of the electrolytic capacitor electrode terminals 11 Guide members 7, 8 which can be freely attached and detached while exposing the opposite end, which is adhered by a pusher 9, to the opposite end.
The tab supply connection step B, the press cutting steps C and D, and the trimming step E are carried out by further clamping with the Cp clamper 13 and the Cp line guide members 21, 23 and 25.

[0008] tape base 2 to move the tape transfer table on 2 ₁ intermittently in the example of FIG. 1 in the lead supplying step A Cp
The wire 1 is fed through the wire nozzle 6 by the feed clamp 5 through the wire rod nozzle 6, and is fixed by using the Cp wire guide members 7, 8 and the pusher 9 with the adhesive tape 3 and fixed.
Is cut into a shape in which arc is easily generated, for example, a shape having a tapered tip. (Fig. 2)

Then, in the tab supply connection step B, the Al wire tab 10 is fed to the fixed-size feed chuck 14 through the wire rod nozzle 16 by the feed clamp 15 at a predetermined position with respect to the Cp 1 sequentially sent by the tape base 2. insert and, when the chuck 14 grip the tabs 10 of the Al wire, half die 4 ₁ rises, turned down Al wire nozzle 16 a
After cutting the l wire, the Cp wire 1 is clamped and fixed by the clamper 13 and the Al wire tab 10 is heated by the welding device 12 while approaching the Cp wire 1 so that the arc jumps and is pressed until the joint surface is melted. Cp line 1 with molten metal
And the Al wire 10 are butt-welded. (Fig. 3)

Next, the Al wire tab 10 sent by the tape base 2 is clamped and fixed by the Cp wire clamper 21 in the press cutting steps C and D, and the leading end of the Al wire is pressed by the rolling punch 22 to be flattened. The flat portion 20 is formed, and the rolling peripheral portion of the flat portion 20 is cut with upper and lower blades, or this pressing and cutting are performed simultaneously to obtain a fixed size. (FIGS. 4 and 5)

Further, the cut peripheral portion of the flat portion 20 with the lead wire which is adhered to and transferred to the tape base 2 is pressed again by the punch 26, and the burrs are lightly hit to trim the burrs. After the step E, the tape base is wound around a reel and subjected to a washing step and a chemical conversion step to be processed. (FIG. 6) Thus, a series of electrode ends for an electrolytic capacitor is wound around a reel (not shown) using the tape base 2 as a material transfer jig, and is processed in a washing step F and a chemical forming step G, whereby an aluminum electrode with a lead wire is obtained. Terminals can be produced efficiently.

Although the tape base 2 is made of a non-conductive material such as paper or resin, a metal tape can be used if necessary. When the lead wires 1 are attached to the tape base 2 with the adhesive tape 3, a conductive member (not shown) is adhered and held to each of the adjacent lead wires 1 in a contact state, or a conductive filler is attached. It is also effective to fix a large amount of electrode terminals at one time by applying a conductive adhesive mixed with a conductive adhesive and supplying electricity during the chemical conversion treatment.

In the embodiment of the present invention, the tape itself is used as a material transfer jig in each processing step, and the equipment for transferring the material during welding and pressing can be greatly simplified, and the production equipment can be made inexpensive. Moreover, in the washing and chemical conversion processes,
There is no need for canning of lead wires for cleaning and chemical formation, resulting in significant cost reduction.In terms of quality, the press cut direction of the flat part of the aluminum wire tab is constant, so tabs are required in the caulking process during capacitor assembly. There is an advantage that the edge direction of the flat portion can be avoided and the defective aluminum foil can be eliminated. That is, if a plurality of electrode terminals are adhered and fixed with a tape and chemically formed, wound around a reel, and the flat portions 20 of the electrode terminals 11 are sequentially mounted on the capacitor element while being unwound from the reel when assembling the capacitor.
The electrode terminals 11 subjected to the chemical conversion treatment are transferred while being held in order by the tape base 2 in a state of being arranged in an orderly manner. In the caulking process, the edge direction of the flat portion of the tab is avoided, and defective aluminum foil breakage and oxide film are prevented. There is no breakage, no misalignment, deformation, or defective supply of the electrode terminals 11, and further, the positioning of the tip of the electrode terminals 11 and the flat portion 20
Can be set in advance, so that it can be mounted as it is while being rewound from the reel, and post-processing can be greatly simplified.

[0014]

According to the present invention, a process of supplying a CP wire of a lead wire to a tape base, attaching the lead wire to the tape base with an adhesive tape, and cutting the lead wire into a predetermined length suitable for welding by a cutter is provided. A lead wire supply step of repeatedly and sequentially attaching the lead wires at intervals and supplying an Al wire of a tab to a cut end of the lead wire which is continuously transferred, cutting the lead wire to a predetermined length, and cutting the lead wire end. A tab supply connection process for approaching butting and welding and integration, a press cut process of rolling and forming the tab conveyed by tape-based traveling into a flat portion with a punch, and deburring of a peripheral cut portion of the tab The trimming process is performed and the tape base is continuously wound up as a series of electrode terminals that are still taped to the tape base, and the tape base is materialized by washing and forming. It can be used as a transfer jig to eliminate defective products, produce efficiently, greatly improve operability, simplify manufacturing equipment, and greatly increase the operating rate and yield with work suitable for mass production. Is significantly improved, and a low-cost electrode terminal can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a manufacturing process according to an embodiment of the present invention.

2A and 2B show a lead wire supply step of FIG. 1, wherein FIG. 2A is a side view thereof, FIG. 2B is a front view of a Cp wire tape attaching step,
(C) is a plan view.

3A and 3B show a tab supply connection step of FIG. 1, wherein FIG. 3A is a side view thereof, and FIG. 3B is a plan view after a welding step.

4A and 4B show a pressing step of FIG. 1, wherein FIG. 4A is a side view thereof, and FIG. 4B is a plan view after pressing.

5A and 5B show a cutting process of FIG. 1, wherein FIG. 5A is a side view thereof, and FIG. 5B is a plan view after cutting.

6A and 6B show a trimming step of FIG. 1, wherein FIG. 6A is a side view and FIG. 6B is a plan view.

[Explanation of symbols]

 A Lead wire supply step B Tab supply connection step C Press step D Cutting step E Trimming step F Cleaning step G Chemical conversion step 1 Lead wire 2 Tape base 3 Adhesive tape 4 Cutter 5 Clamp 6 Wire rod nozzle 7, 8 Guide member 9 Pusher 10 Tab 12 Welding device 13 Cp wire clamper 14 Chuck 15 Clamp 16 Wire rod 20 Flat portion 21 Guide member 22 Punch 23 Guide member 24 Cutter 25 Guide member 26 Punch

Claims (3)

[Claims] 1. A process in which a CP wire of a lead wire is supplied to a tape base, and the lead wire is adhered to the tape base with an adhesive tape and cut by a cutter into a shape having a predetermined length suitable for welding. A lead wire supply process of attaching the lead wires at intervals, supplying an Al wire of a tab to a cut end of the continuously transferred lead wire, cutting the lead wire to a predetermined length, and abutting the lead wire end closely. A tab supply connection process for welding and unifying, and a press cutting process of rolling and forming the tab conveyed by tape-based traveling into a flat portion with a punch, and a trimming for removing burrs in a peripheral cut portion of the tab. Electrode terminals for electrolytic capacitors, characterized in that the electrode terminals processed in the above steps are continuously wound as a series of electrode terminals as they are taped on a tape base, washed and formed. Manufacturing method. 2. The supply step of a lead wire and an Al wire,
A method for manufacturing an electrode terminal for an electrolytic capacitor, wherein the electrode terminal is inserted and supplied to a linear nozzle by a linear feed clamp, and is cut by a cutter or a half die after feeding a predetermined length. 3. A tab supply connection step, a press cut step, and a lead wire of the electrode terminal, the opposite end attached to a tape base being sandwiched by a guide member which can come and go under the exposed state. A method for manufacturing an electrode terminal for an electrolytic capacitor to be subjected to a trimming step.