CN1109998A - Electronic lead element and manufacturing method thereof - Google Patents

Abstract

An electronic lead element and a method for manufacturing the same, characterized in that: a set of electronic lead elements, each consisting of a lead and an aluminum pad, is wound in a thin metal tape roll structure. One end of the lead is fixed to the metal strip at a predetermined interval, the other end is welded to one end of the aluminum lug, respectively, the other end of the aluminum lug is flattened, and the flattened surfaces of the lugs are oriented in the same direction. Thus, the aluminum foil wound around is prevented from being damaged by burrs that may be formed on the surface of the tab.

Description

The present invention relates to an electronic lead element and its manufacturing method, in particular to fixing a plurality of leads to a thin metal strip at predetermined intervals, then welding aluminum solder tabs to the leads and pressing the joint into a flat sheet shape. In this way, the surfaces of the solder tabs are oriented in the same direction with the burrs usually produced when the solder tabs are subjected to a pressurization process, after which the thin strip is wound into a metal strip roll to form a complete set of electronic lead components A step of.

The present invention provides the lead components directly to the lug bonding equipment without relying on the conventional feeder which is difficult to orient the side where the burr is formed on the lug in the same direction. The invention is intended to prevent the application of the solder tab surface to the thin aluminum foil which would form burrs which would damage the foil and thus the quality of the finished capacitor. In this sense, the present invention can be said to have created a new era.

As shown in FIGS. 5, 6 and 11-14, it is well known that an electronic lead component 1 is composed of a lead 1a and an aluminum tab 1b soldered to a terminal 1d at one end of the lead. Then part of the soldering sheet 1b is pressed into a flat sheet 1c, and then trimmed to form a predetermined shape. In this case, the electronic lead components 1 are processed into respective separated states and put on the market in the respective separated states.

As shown in Figures 5 and 6, as a result of the soldering process, the joint 1d between the lead wire 1a and the soldering piece 1b is usually formed with a hard and sharp protrusion 1e, and in addition, as a result of the pressurization process, a hard and sharp protrusion 1e is formed on one surface of the flat piece 1c. On, a burr 1f is usually formed along the periphery of the flat sheet. The aluminum is hardened due to processing, so the protrusion 1e and the burr 1f are very hard.

As shown in Figures 11 and 12, the lead component 1 is rotated by the vortex formed by the vibratory feeder (not shown), so that the lead 1a falls in a straight line, and the electronic lead component 1 is delivered to the solder tab welding equipment (not shown). out), and then convey the lead wire 1a into the gap 2a between the pair of guide rails 2. The feeder transports the lead element 1 to the lug welding equipment in the direction indicated by the arrow A through gravity or vibration applied to the guide rail 2 .

During transfer, the lead element 1 is in fact, axially rotated between the guide rails 2 as indicated by the arrows B or C. The rotation of the lead element 1 causes the joint 1d to rub against the opposite edge 2b of the guide rail 2, thereby causing the lead element The edge 2b of the guide rail 2 is scratched when the component 1 is damaged. This scraping action will quickly damage the conveying function of the guide rail 2 . If the lead component 1 is conveyed on such scraped guide rail 2, the damaged edge 2a of the guide rail 2 will catch the lead wire 1a and cannot be conveyed smoothly. Therefore, it is often necessary to repair the guide rail 2 or to use a new guide rail.

As shown in FIGS. 13 and 14, in order to manufacture electrolytic capacitor elements, it is necessary to firmly lap the flat piece 1c of the lead element 1 to the aluminum foil 3 by mechanical pressure (so-called lug lap). However, if the surface of the flat sheet 1c with the burrs 1f comes into contact with the aluminum foil 3 and then mechanical pressure is applied, the burrs 1f will damage or cut the aluminum foil 3 in the direction indicated by the arrow D. As a result, the electrical properties of the electrolytic capacitor element will deteriorate significantly.

In order to prevent the aluminum foil 3 from being damaged, it is necessary to bring the surface of the flat sheet 1c without the burrs 1f into contact with the aluminum foil, and then apply mechanical pressure. However, as shown in FIG. 8, when the lead elements 1 are conveyed on the guide rail 2, they are axially rotated in the direction indicated by the arrow B or C. As shown in FIG. It is practically impossible to orient the same surfaces of all the flat sheets 1 c in the same direction so that the same surfaces of all the flat sheets 1 c are in contact with the aluminum foil 3 . In the case of small electrolytic capacitor elements, this is especially difficult due to the smaller flat plate 1c of the lead element 1 .

When the electronic lead component 1 was conveyed, the surface of the flat sheet 1c was not oriented, and the possibility that the surface of the flat sheet 1c with burrs 1f contacted and fixed to the aluminum foil 3 was 50%. In this case, the burr 1f is likely to penetrate into the aluminum foil 3 and damage the electrical characteristics of the capacitor. The burr 1f will often cut through the foil 3 in the direction indicated by arrow D, rendering the finished capacitor useless.

The present invention eliminates these disadvantages and disadvantageous aspects, and the main object of the present invention is to provide a method for exclusively manufacturing electronic lead components, wherein a set of electronic lead components in a coiled state of a thin metal strip having a predetermined A lead element spaced such that adjacent lead elements overlap. Another object of the invention is to transport lead elements without causing damage to the transport equipment. Another object of the present invention is to smoothly transport leaded components to significantly increase the effectiveness of the tab splicing operation. Another object of the present invention is to fix one end of the lead with a predetermined space therebetween to a thin metal strip, then solder the solder tab end to the other end of the lead and press the other end of the solder tab into a flat sheet to The side of the solder sheet with burrs generated during the pressurization process is positioned in the same direction, so that the surface with burrs does not contact the aluminum foil to be welded, thereby preventing the burrs from damaging the aluminum foil.

Another object of the present invention is to secure one end of a lead wire with a predetermined space therebetween to a thin metal strip having a series of feed ports with a predetermined space therebetween and then solder aluminum solder tabs to the ends of the lead wire The other end, and one end of the solder tab is pressed into a flat sheet shape, and then the feed port of the belt is engaged with the toothed reel that conveys the belt. It is a further object of the present invention to ultimately roll a thin metal strip comprising a set of electronic lead elements into a metal strip roll. Therefore, lead components can be processed easily and conveniently.

In summary, the present invention provides a method for forming a thin metal strip coil, one end of the lead wire is fixed at a fixed interval on the thin metal strip, the other end of the lead wire is welded to one end of the aluminum soldering piece, and the other end of the welding piece is pressed into a flat sheet .

Another mode of the invention is to fix one end of the lead wire with a predetermined space therebetween to a thin metal strip, then solder one end of an aluminum solder tab to the other end of the lead wire and press the other end of the solder tab into a flat sheet.

Another mode of the present invention is to fix one end of the lead wire to the thin metal strip at predetermined intervals, weld one end of the aluminum solder tab to the other end of the lead wire, and then press the other end of the solder tab into a flat sheet.

Another mode of the present invention is to fix one end of the lead wire to a thin metal strip at predetermined intervals, on which there are delivery ports formed at predetermined intervals, and then weld one end of the aluminum soldering piece to the other end of the lead wire, after that, Then press the other end of the solder piece into a flat piece.

Another mode of the present invention is to fix one end of the lead wire to the thin metal strip at predetermined intervals, weld one end of the aluminum solder sheet to the other end of the lead wire, and form feed ports on the metal at predetermined intervals, and then weld The other end of the sheet is pressed into a flat sheet.

Another mode of the invention is to provide a set of electronic lead components in the form of coils of thin metal strip, wherein one end of the lead of the lead component with predetermined spacing therebetween is soldered to the metal strip, and one end of the aluminum solder tab is welded to the other end of the lead. , and the other end of the solder tab is pressed into a flat sheet.

Another mode of the invention is to solder one end of a plurality of leads to a thin metal strip, then solder one end of an aluminum solder tab to the other end of the lead, and then press the other part of the solder tab into a flat sheet.

Another mode of the invention is to weld one end of a plurality of lead wires to a thin metal strip, weld one end of an aluminum solder tab to the other end of the lead wire, and then pressurize the other end of the solder tab to form a flat sheet.

Other characteristics and advantages of the present invention will appear through the description of the preferred examples of the present invention.

Figure 1 is a front view of an electronic lead element welded on a thin metal strip according to the present invention;

Figure 2 is an isometric view of a lead of an electronic lead component soldered to a metal strip;

Figure 3 is a plan view of a roll of thin metal tape with electronic lead components fixed to the metal tape;

Figure 4 is a cross-section of an electronic lead component with one surface of the aluminum solder tab lapped to the aluminum foil without causing damage to the aluminum foil;

Fig. 5 is a cross-sectional view of a welding piece welded to the lead of an electronic lead component as a partially enlarged part of an embodiment;

Figure 6 is the same as Figure 5, but shows another embodiment;

Fig. 7-10 is another embodiment of the present invention, wherein,

Figure 7 is an isometric view of an electronic leaded component with the lead ends soldered to the protruding portion of the thin metal strip;

Fig. 8 is an isometric view of the lead end of the lead element welded to the protruding portion of the metal strip by laser welding equipment;

Figure 9 is a plan view of a plurality of metal strips extruded from a thin metal place;

Figure 10 is an isometric view of a plurality of metal strips extruded from the thin metal sheet and separated from each other;

11-14 is a conventional embodiment, wherein,

Figure 11 is a plan view of electronic lead components conveyed on the guide rail;

Figure 12 is an isometric view of the guide rail being partially damaged by welding the lug;

Figure 13 is an isometric view of an aluminum foil cut through by a burr formed on the plane of the solder tab; and

Figure 14 is a cross-sectional view of a lead element and aluminum foil, the latter being cut by a burr.

Referring to FIGS. 1-4 , each electronic lead element 10 is composed of a lead wire 12 and an aluminum solder tab 13 . Electronic lead elements 10 are attached to a thin metal strip 11 .

A thin metal tape 11 is used to overlap a plurality of electronic lead elements with predetermined intervals therebetween. As an example, the metal strip 11 may be a stainless steel sheet with a thickness of 0.05mm-0.1mm, and may have circular feeding openings 11a with predetermined intervals therebetween.

The lead wire 12 is a wire (CP wire) made of mild steel. The diameter of the lead wire 12 varies according to the size of the electronic lead element 10 . However, as part of the electrolytic capacitor element, the diameter of the lead wire 12 is generally 0.1mm-1mm.

The solder tab 13 is an aluminum rod, one end of which is welded to the one end 12a of the lead wire 12 . It is known that after the welding process, there are hard and sharp protrusions at the welded portion 10a as shown in FIGS. 5 and 6 .

The other free end of the solder tab 13 is pressed into a flat sheet. The flat sheet is pressed into a predetermined shape 13a. It is known that, after the pressure treatment, burrs 13b are generated along the periphery of one surface of the flat sheet 13a.

Many electronic lead components made as described above are secured to the thin metal strip 11 in such a manner that the free ends 12b of the leads 12 are secured to the strip, as shown in FIG. The metal strip 11 is then conveyed in the direction indicated by arrow E in FIG. 3 and wound in the direction indicated by arrow F to form a finished metal coil. That is, the electronic lead components are delivered in such metal coils.

According to the present invention, the electronic lead elements 10 can be fixed to the metal strip 11 at predetermined intervals before the solder tabs 13 are pressed into the flat sheet 13a.

In this case, after the solder piece 13 is fixed on the metal strip 11, it is subjected to pressure treatment to become an extension of the lead wire 12, and the flat piece 13a formed by it is in the same direction, so that the surface with the burr 13b will definitely be in the same direction. oriented in the same direction. And these burr faces are not oriented in different directions.

Referring to FIGS. 1 and 2, as an example, the lead wires 12 may be fixed to the thin metal strip 11 at predetermined intervals by a laser welding device 14. Referring to FIG.

Then one end of the aluminum solder tab 13 is welded to the one end 12a of the lead wire 12, after which the empty end portion of the solder tab is pressed into a flat piece 13a. Of course, the tab 13 may be welded to the lead 12 before the lead 12 is welded to the metal strip 11 .

According to the present invention, its manufacturing process is carried out continuously and automatically with extremely high efficiency. The manufacturing process includes the steps of: transferring the lead 12 to the thin metal strip 11, welding the lead 12 to the metal strip 11, welding the aluminum solder tab 13 to the lead 12 , press the solder sheet 13 to form a flat sheet 13a and wind the metal strip into a metal roll shape.

As shown in FIG. 3, since the electronic lead element 10 is rolled into a metal roll form, the handling and transportation of the element 10 is much easier and more convenient than the conventional method of packing many individual electronic elements together in a container. According to the present invention, it is apparent that the electronic lead element 10 can be prevented from being twisted and/or bent. In addition, the electronic lead component 10 can be easily and quickly cleaned and chemically treated.

In addition, according to the present invention, the metal strip 11 lapped with the electronic lead components 10 is engaged with a sprocket (not shown) through the feed port 11a, and then transferred to a lug bonding apparatus (not shown) which is a part of the capacitor manufacturing apparatus. out), and then the lead element 10 is cut from the metal strip 11, after that, the surface of the flat piece 13a is lapped with the aluminum foil 20, and mechanical pressure is applied to fix it to the aluminum foil. These operations are continuous and automatic.

According to the present invention, since the metal strip overlapped with the lead element 10 is conveyed by the toothed reel, the lead element 10 will not damage the conveying equipment, whereas in the case of a conventional feeder such as a scroll type feeder, it is possible could otherwise damage the transmitting device. Therefore, the feeder employed in the present invention is durable and can smoothly transfer the lead components 10 to the lug bonding apparatus.

As shown in FIG. 4, notice that the solder tab 13 is connected to the aluminum foil 20 in such a manner that since the lead element 10 is conveyed in a state where the surface of the flat tab 13a having the burr 13b is oriented in the same direction, the flat tab 13 is The surface of the sheet 13a without burrs 13b is definitely in contact with the aluminum foil 20 . It is obvious that the burr 13b does not damage the aluminum foil 20 when mechanical pressure is applied to bond the solder tab 13 to the aluminum foil 20 .

In this embodiment the thin metal strip 11 is a stainless steel sheet. However, the metal strip may also be one of brass, copper, beryllium, mild steel or synthetic resin. In addition, an adhesive method may be used instead of a welding method to fix the leads to the metal tape.

Another embodiment of the present invention is illustrated with reference to Figs. 7-10. In this embodiment, the shape of the thin metal strip is different from that of the first embodiment.

For thin metal strips, different reference numerals will be used, while for other elements the reference numerals will be the same as in the first embodiment.

Compared with the metal strip 11 formed in the first embodiment having the opposite transverse sides extending parallel to the straight line, the metal strip 110 in the second embodiment is formed by providing notches 110b and protrusions 110c at predetermined intervals. , wherein the notch 110b and the protruding portion 110c are pressed against the aligned thin metal 100 . Also as shown in FIGS. 9 and 10, the metal strip 110 has delivery openings 110a provided at predetermined intervals, which are provided on the metal strip 110 together with the notches 110b and the protrusions 110c.

The size and shape of the area of the notch 110b and the protrusion 110c are the same. For example, the width of the metal strip 110 is 5 mm, and the lateral width of the protruding portion 110 c is about 1 mm, which is slightly wider than the 0.1 mm-1 mm diameter of the lead wire 12 of the electronic lead component 10 mentioned above.

For example, one end 12b of the wire 12 is welded to the protruding portion 110c of the metal strip 110 with the laser welding device 14 after or before the solder tab 13 is welded to the opposite end 12a of the wire 12 . The metal strip 110 is then rolled into a metal coil in the same manner as mentioned in the first embodiment.

According to this embodiment, since the heat generated during welding is confined to the protruding portion 110c of the metal strip 110, the metal strip 110 will not be bent or deformed by the heat.

The invention has been described with reference to preferred embodiments. However, various modifications and changes can be made to the present invention. However, these modifications and changes do not depart from the spirit of the present invention and the scope of the following claims of the present invention.

Claims (18)

1, one group of electronic lead elements and production method thereof that is wound in the metal strip volume structure, described electronic lead elements and production method thereof is made up of lead-in wire and aluminium weld tabs respectively, one end of described aluminium weld tabs is made up of lead-in wire and aluminium weld tabs respectively, one end of described aluminium weld tabs is welded to an end of lead-in wire respectively, and its other end is driven plain, and the other end of described lead-in wire is fixed on the metal tape by predetermined space.

2, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing, comprise step: an end of a plurality of electronic lead elements and production method thereofs is fixed to thin tungsten band by predetermined space, then joint one end of aluminium weld tabs is welded to the other end of lead-in wire respectively, afterwards, the other end with the aluminium weld tabs flattens again.

3, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing comprises step: an end of a plurality of leads is fixed to metal strip by predetermined space, the other end of described lead-in wire respectively with the end welding of aluminium weld tabs, the other end with the aluminium weld tabs flattens then.

4, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing, comprise step: an end that will go between is fixed on the metal strip that has a plurality of feeding ports of arranging by predetermined space, then an end of aluminium weld tabs is welded to the other end of lead-in wire respectively, afterwards, the other end with the aluminium weld tabs flattens again.

5, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing, comprise step: an end that will go between is fixed on the metal strip that has a plurality of charging apertures of arranging by predetermined space, the other end of lead-in wire is welded to an end of aluminium weld tabs, and the other end of aluminium weld tabs is flattened.

6, one group of electronic lead elements and production method thereof that is wound in the thin gold ribbon volume structure, this electronic lead elements and production method thereof is made up of lead-in wire and aluminium weld tabs respectively, one end of aluminium weld tabs is welded to an end of lead-in wire respectively, and its other end is driven plain, and the other end of lead-in wire is welded on the metal tape by predetermined space.

7, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing comprises step: an end of a plurality of leads is welded to a thin metal by predetermined space, then, an end of aluminium weld tabs is welded to the other end of lead-in wire respectively, the other end of aluminium weld tabs is flattened afterwards again.

8, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing comprises step: an end of a plurality of leads is welded on the metal strip, these lead-in wires respectively with the end welding of aluminium weldering place, the other end with the aluminium weld tabs flattens then.

9, the group electronic lead elements and production method thereof that is somebody's turn to do as claimed in claim 1, wherein, described metal strip has the straight flange of relative horizontal parallel prolongation.

10,, it is characterized in that metal strip has the straight flange of relative horizontal parallel prolongation as the method for one group of electronic lead elements and production method thereof of the described manufacturing of one of claim 2-5.

11, electronic lead elements and production method thereof as claimed in claim 6 is characterized in that metal strip has the straight flange of relative horizontal parallel prolongation.

12,, it is characterized in that metal strip has the limit of relative horizontal parallel prolongation as the method for one group of electronic lead elements and production method thereof of the described manufacturing in one of claim 7 and 8.

13, one group of electronic lead elements and production method thereof that is wound in the metal strip volume structure, there is the one group of ledge that is provided with by predetermined space on one side of its metal tape, described electronic lead elements and production method thereof is made up of lead-in wire and aluminium weld tabs respectively, one end of aluminium weld tabs is welded to an end of lead-in wire respectively, and the other end is driven plain, and the other end of lead-in wire is separately fixed at the ledge of metal strip.

14, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing, comprise step: an end that the aluminium weld tabs is welded to lead-in wire respectively, the other end that respectively this aluminium is welded flattens then, the other end that will go between is respectively fixed to one group of ledge on the metal strip afterwards, is formed in a side of metal tape between this group ledge by predetermined space.

15, the electronic lead elements and production method thereof in the metal strip volume structure of one group of coiling, one side of this metal strip has one group of ledge by predetermined space between it, this electronic lead elements and production method thereof is made up of lead-in wire and aluminium weld tabs respectively, one end of aluminium weld tabs is welded to an end of lead-in wire, and its other end is driven plain, and the other end of lead-in wire is welded on the ledge of metal tape respectively.

16, the method for one group of electronic lead elements and production method thereof of a kind of manufacturing comprises step; The aluminium weld tabs is welded to an end of lead-in wire, respectively the other end of aluminium weld tabs is flattened then, afterwards, the other end of lead-in wire is welded to one group of ledge on the metal strip respectively, be formed on a side of metal strip between this ledge by predetermined space.

17,, it is characterized in that metal strip made by sheet metal as the method for one group of electronic lead elements and production method thereof of the described manufacturing in one of claim 13 and 15.

18,, it is characterized in that metal strip made by sheet metal as the method for one group of electronic lead elements and production method thereof of the described manufacturing in one of claim 14 and 16.

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