Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
  • H01G9/004—Details
  • H01G9/008—Terminals
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
  • H01G13/006—Apparatus or processes for applying terminals

Definitions

• the present invention relates to a lead wire of an electrolytic capacitor called a terminal, a method of manufacturing the same, and an apparatus for manufacturing the same.
• the tab terminal has a configuration in which the lead wire a and the aluminum head b are butt-welded in a straight line, and the aluminum head is formed by punching an aluminum wire with a circular cross section using a punch. It has a flattened shape.
• the pressed part The part protruding from the punch is cut off with a cutting blade to form a strip. Therefore, cutting burrs X are likely to be generated at the periphery of the pressed portion f.
• the electrolytic capacitor is made by attaching aluminum foil to this pressed part f and winding it into a roll. If this burr X touches the aluminum foil (not shown), it will damage it and cause the quality of the electrolytic capacitor to deteriorate.
• Jitsuhei 6—3 6 5 7 4 using the upper and lower two cutting blades, first lower the upper cutting blade, cut the press knitting part to half thickness, and then raise the lower cutting blade. A method of cutting the remaining half of the thickness is disclosed. According to this method, since the lower cutting edge rises beyond the bottom dead center of the upper cutting edge, cutting burrs hardly occur.
• the punch 21 descends further and stops when the distance from the cradle 22 is H2. In the slight descending process from H1 to H2, the aluminum wire caught between the punch 21 and the pedestal 22 protrudes further, and as shown by the arrow in Fig. Press against the side.
• the upper and lower cutting blades have different thicknesses of aluminum when cutting. As shown in FIG. 2, there is also a problem that the round shape of the periphery of the pressed portion is unlikely to be the same.
• the present invention eliminates cutting burrs and return burrs that may damage the aluminum foil of an electrolytic capacitor and degrades its performance, and forms an arc-shaped cross-section at the four corners of the pressed part,
• An object of the present invention is to manufacture a tab terminal in which a pressed portion has a uniform thickness.
• the present invention provides an apparatus for manufacturing a terminal for an electrolytic capacitor for an electrolytic capacitor, comprising: Cut notch for engraving the cut line in the protruding part of the head A cutting blade that moves in a direction opposite to the forward-moving cutting blade and cuts a protruding portion of the aluminum head along the cutting line, and the cutting blade for cutting. Has a notch formed at the edge thereof.
• the punch for pressing the aluminum head is provided with an edge at a periphery thereof so as to be higher than a punch surface, and the inside of the page is formed in a round shape.
• a cutting edge reversing position adjusting mechanism for freely adjusting the reversing position of the cutting edge for cutting.
• a method of manufacturing a tab terminal for an electrolytic capacitor comprising: forming an aluminum head in a flat shape so as to have a predetermined thickness by using an aluminum head pressing punch; The part protruding from the pressing punch is partially cut by a cutting blade provided with a notch at the edge, and a cutting notch provided at a position opposed to the cutting blade. Cutting off the protruding portion in which a cut is partially formed by a blade from the opposite side of the cut portion.
• a gap is provided between the protruding portion and the pressed aluminum head.
• an edge is provided on a peripheral edge of the punch for pressing the aluminum head, and the edge portion is formed in a round shape.
• a tab terminal for an electrolytic capacitor according to another aspect of the present invention is obtained by using the manufacturing method described above, wherein a thickness of a pressing portion of an aluminum head is uniform, and a pressing portion cross section is provided. Are formed in a round shape.
• the radius of the round shape is in the range of 0.03 to 0.50, where the thickness of the pressing portion is 1. Further, it is more preferable that the surface of the pressed portion is smooth and the height thereof does not exceed 0.05 mm even when the projection is formed.
• FIG. 1 is an overall front view of an evening terminal manufacturing apparatus embodying the present invention.
• FIG. 2 is an enlarged view showing the cutting device of FIG. 1 in the order of steps.
• FIG. 3 is an enlarged view showing the cutting device of FIG. 1 in the order of steps, and the right half of the cutting device is omitted.
• FIG. 4 is an enlarged view showing the cutting device of FIG. 1 in the order of steps, and omits the right half of the cutting device.
• FIG. 5 is an enlarged view showing the cutting device of FIG. 1 in the order of steps, and omits the right half of the cutting device.
• FIG. 6 is an enlarged view showing the cutting device of FIG. 1 in the order of steps, and omits a right half of the cutting device.
• FIG. 7 shows the main part of FIG. 4 in a further enlarged order in the order of steps.
• FIG. 8 shows the main part of FIG. 4 in a further enlarged order in the order of steps.
• FIG. 9 shows the main part of FIG. 4 in a further enlarged order in the order of steps.
• FIG. 10 is an enlarged sectional view of a punch embodying the present invention.
• FIG. 11 is an enlarged view of a main part of the conventional example.
• FIG. 12 is an enlarged cross-sectional view of a pressed portion of a sunset terminal manufactured by a conventional apparatus.
• FIG. 13 is an overall perspective view of the evening terminal of FIG.
• FIG. 14 is an enlarged cross-sectional view of the pressed portion of the tab terminal according to the present invention.
• FIG. 1 shows an overall front view of the device of the present invention.
• the cradle 1 is fixed to the foundation 2, and a punch 3 is provided above the pedestal 2, and they are arranged so as to oppose each other.
• a cutting device 4 is installed between the receiving table 1 and the punch 3, and the elevating table 5 is slidably inserted into a vertical support 6 erected on the foundation 2.
• the punch 3 is passed through a vertical through-hole 7 provided in the lift 5.
• the punch elevating table 8 is slidably communicated with the column 6 like the elevating table 5.
• the lift rod 9 has a lower end connected to the punch lift 8 and an upper end connected to a drive source (not shown). When the lifting rod 9 moves up and down, the punch 3 and the punch lifting table 8 move up and down together.
• the cam 10 is in contact with the roll 12 of the screw rod 11 whose length can be adjusted, and the screw rod 11 is connected to the elevating platform 5 to form a cutting edge reversing position adjusting mechanism. Have been.
• the cutting device 4 has cutting blades 13 and cutting blades 14 that are arranged so that the cutting blades are close to each other on the left and right sides of the punch 3 and the cradle 1. It is integrally assembled so that
• the cutting edge 13 has a notch p at its edge.
• the cutting blade 13 cuts a part of the aluminum head b protruding from the punch 3, and cuts a cut line in the protruding portion (see FIG. Four ) .
• the cutting device 4 is turned upside down and the cutting blade 13 moves upward, and at the same time, the lower cutting blade 14 moves above the tip of the punch 3 to remove the protruding part of the aluminum head b. Cut away from the score line and resect (Fig. 5). The cut aluminum scum is removed by blowing it off with a blower.
• the mutual timing and stroke of the punch 3 and the cutting device 4 can be controlled by adjusting the length of the screw rod 11.
• the positional relationship between the punch 3 and the cutting edge 13 with the evening adjustment and stroke adjusted is shown in Figs.
• Punch 3 descends and the aluminum head is crushed to a specified thickness. Part of aluminum head b protrudes from punch 3. Next, the cutting edge 13 is lowered, and the state shown in FIGS. 7 to 8 is obtained. .
• the cutting blade 13 for cutting hits the protruding portion and pushes the protruding portion down as shown in FIG. Due to this depression, the vicinity of the boundary between the portion sandwiched between the punch 3 and the cradle 1 and the protruding portion is pulled.
• the punch 3 is lowered from the position shown in FIG. 7 by the depth of the notch p of the edge, the protruding portion starts to be cut off by the edge at the end of the notch p.
• the edge of the punch 3 is raised above the punch surface, and the inside of the edge is formed into a radius 15 to form the aluminum head as shown in FIG. It is possible to obtain an evening terminal having a flattened portion having a uniform thickness and four corners r of the cross section having the same round shape.
• Such aluminum head tab terminals have no directivity between the front and back, and do not damage ultra-thin aluminum foil, so that a high-quality electrolytic capacitor can be obtained.
• the radius of the four corners r is preferably in the range of 0.03 to 0.05 when the radius of the radius is 1 for the thickness of the pressed portion. If it is less than 0.003, the four corners r may be angular and the aluminum foil may be damaged. May be damaged. Further, it is preferable that the surface of the pressed portion is smooth, and it is necessary that the height of the protrusion is not more than 0.05 mm even when the protrusion is formed.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Manufacturing & Machinery (AREA)
• Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=29561249

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (4)

Citations (4)

• 2002
  • 2002-05-24 JP JP2002151344A patent/JP4782969B2/ja not_active Expired - Lifetime
• 2003
  • 2003-05-08 CN CNB038118165A patent/CN100437852C/zh not_active Expired - Lifetime
  • 2003-05-08 AU AU2003235899A patent/AU2003235899A1/en not_active Abandoned
  • 2003-05-08 WO PCT/JP2003/005780 patent/WO2003100802A1/ja not_active Ceased
  • 2003-05-08 KR KR1020047017841A patent/KR100608275B1/ko not_active Expired - Lifetime
  • 2003-05-09 MY MYPI20031744A patent/MY140925A/en unknown
  • 2003-05-15 TW TW092113242A patent/TW200403699A/zh unknown

Patent Citations (4)

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