CA2584533A1 - Method and apparatus for the manufacture of a terminal for a lead-acid type accumulator and a terminal manufactured therewith - Google Patents

Method and apparatus for the manufacture of a terminal for a lead-acid type accumulator and a terminal manufactured therewith Download PDF

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Publication number
CA2584533A1
CA2584533A1 CA002584533A CA2584533A CA2584533A1 CA 2584533 A1 CA2584533 A1 CA 2584533A1 CA 002584533 A CA002584533 A CA 002584533A CA 2584533 A CA2584533 A CA 2584533A CA 2584533 A1 CA2584533 A1 CA 2584533A1
Authority
CA
Canada
Prior art keywords
slug
deformation
shaping
punch
die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002584533A
Other languages
French (fr)
Other versions
CA2584533C (en
Inventor
Folco Gibellini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Accuma Plastics Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2584533A1 publication Critical patent/CA2584533A1/en
Application granted granted Critical
Publication of CA2584533C publication Critical patent/CA2584533C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/022—Special design or construction multi-stage forging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/08—Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/562—Terminals characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49218—Contact or terminal manufacturing by assembling plural parts with deforming
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5193—Electrical connector or terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forging (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

A method of manufacturing a lead terminal for an accumulator by plastic deformation on a cold-working apparatus that has a shaping station (2) and at least one deformation station (30, 40, 50, 60, 80) by shaping, at the shaping station, a slug (7) that has a longitudinal extension along a longitudinal axis such as to provide base (9) and contact (8) parts for the terminal and a size commensurate with the size of the terminal end piece to be manufactured;
transferring the slug (7) to the deformation station (30, 40, 50, 60, 80);
carrying out a first deformation of the slug (7) for inner and outer shaping of its base part (9); and carrying out a second deformation of the slug (7) for performing at least a further inner and outer shaping of the base part (9), the deformations being performed sequentially as progressive deformation steps.

Claims (30)

1. A method of manufacturing a lead terminal for an accumulator by plastic deformation on a cold-working apparatus that has a shaping station and at least one deformation station, comprising the steps of:
a) shaping, at the shaping station, a slug that has a longitudinal extension along a longitudinal axis thereof such as to provide base and contact parts for the terminal and has a size commensurate with the size of the terminal end piece to be manufactured;
b) transferring the slug to said at least one deformation station of the apparatus;
c) carrying out a first deformation of the slug for inner and outer shaping of the base part thereof; and d) carrying out a second deformation of the slug for performing at least a further inner and outer shaping of the base part thereof, and wherein the steps c) and d) are performed sequentially as progressive deformation steps.
2. The method of claim 1, further comprising a step e) for carrying out a third deformation of the slug for inner and outer shaping of the contact part and of for a further inner shaping of the base part thereof.
3. The method of claim 1, wherein step c) comprises forming on an outer surface region of the base part of the slug of a labyrinth configuration constituted by ridges that protrude from said outer surface of the base part, and forming of a cavity that has an extension inside said base part laying along said longitudinal axis of the slug.
4. The method of claim 3, comprising forming said ridges with cusps at a crown region thereof.
5. The method of claims 3 or 4, comprising forming said ridges provided with undercut root portions.
6. The method of claim 1, wherein the second slug deformation carried out at step d) further comprises an outer shaping of the slug for the shaping of the contact part of the terminal.
7. The method of any of the claims 1 to 6, wherein step d) comprises forming at an outer region of the slug, between said base and contact parts, of a crown that is constituted by a protruding flange that has an edge bearing a plurality of notches, and increasing the extension of said cavity along said longitudinal axis of the slug.
8. The method of claims 3 or 7, wherein step e) comprises forming the outer surface of the contact part so as to have a truncated cone configuration with the larger base connecting to said base part and increasing the extension of said cavity along said longitudinal axis of the slug so as to extend from said base part inside said contact part for substantially all the longitudinal extension thereof but for a bottom end portion.
9. The method of claim 6, further comprising an additional step f) that consists in cutting off said bottom end portion of said cavity so as to form a through hole inside said slug.
10. The method according to any of the preceding claims, wherein said deformation steps are carried out at separate deformation stations of the apparatus and wherein between each two consecutive ones of said deformation steps a respective additional transferring step is provided.
11. The method of claim 7 or of claim 8 when dependent on claim 7, wherein the additional step f) comprises knocking out of the cut bottom end portion of the slug.
12. The method according to claim 10, wherein said deformation steps are carried out at said deformation stations of the apparatus simultaneously, each deformation step being carried out at a respective deformation station on a different slug that is in a different deformation phase of progressive deformation obtained following to a previous deformation step, the transferring steps being coordinated with the progressive deformation steps.
13. The method of any of the preceding claims, wherein said shaping step a) comprises a calibration of the slug.
14. An apparatus for manufacturing a lead terminal for an accumulator by cold plastic deformation working characterized in that it comprises: a shaping station (2) for shaping a slug (7) that has a longitudinal extension along a longitudinal axis thereof such as to provide base (9) and contact (8) parts for the terminal and a size commensurate with the size of the terminal end piece to be manufactured; at least one deformation station (30, 40, 50, 60, 80) adapted to perform progressive and sequential deformations of the slug by way of inner and outer shaping carried out at the contact (8) and base (9) parts thereof; and transfer means (12) for transferring the slug to be worked among said stations (2, 30, 40, 50, 60, 80).
15. The apparatus of claim 14, wherein said shaping station (2) comprises unreeling means (3) for unreeling a lead wire (4) from a wire reel (5), wire drawing and straightening means (6) for drawing and straightening the wire, and cutting means (13) to cut the wire at desired lengths.
16. The apparatus of claim 15, wherein said cutting means (13) comprise: a fixed matrix (13a) for allowing wire feeding therethrough; a movable matrix (13b) for receiving a pre-set length of wire (4) fed through said fixed matrix (13a), said movable matrix (13b) being adapted to move with respect to said fixed matrix (13 a) so as to provide cutting out of a slug (7) with a length that corresponds to said pre-set length of wire (4); an arresting punch (13c) adapted to arrest advancement of the wire (4) in said movable matrix (13b) upon accommodation therein of said pre-set length of wire (4); and an expeller punch (13d) for expelling the cut out slug (7) from said movable matrix (13b).
17. The apparatus of claim 15, wherein said shaping station (2) additionally comprises a calibration device (100) for calibration of a cut out wire length.
18. The apparatus of claims 14 or 15, wherein said at least one deformation station (2, 30, 40, 50, 60, 80) comprises a fixed part (20) and a movable part (21) aligned along a work axis (Y), said movable part being movable along said work axis.
19. The apparatus of claim 18, wherein said movable part (21) comprises: a punch jacket (22); a punch holder (23) enclosed by said punch jacket (22); a hammer punch (24) accommodated in said punch holder (23);
and a punch insert (25) that is enclosed by said punch holder (23) and partly envelops said hammer punch (24) so as to be slidable thereon, with said punch jacket, punch holder, hammer punch and punch insert being mounted coaxial along said work axis (Y).
20. The apparatus of claims 18 or 19, wherein said fixed part (20) comprises: a die holder (26); a segmental die (27) slidably enclosed in said die holder (26); and a die punch (28) that is movably accommodated in said die holder and so as to move with respect to and inside said segmental die (27), said die holder, segmental die and die punch being mounted coaxial along said work axis (Y).
21. The apparatus of any of the claims 14-20, characterised in that it comprises first (30) and a second (40) deformation stations, and, preferably, third (50) and fourth (60) deformation stations.
22. The apparatus of claim 21, wherein said deformation stations are constituted by: the first deformation station (30) at which a first deformation for inner and outer shaping of the base part of the slug (7) is performed; the second (40) deformation station at which a second deformation for further inner and outer shaping of the base part of the slug (7), and optionally an outer shaping of the contact part (8) of the slug (7), is performed, the third (50) deformation station at which a third deformation for inner and outer shaping of the contact part (8) and for a further inner shaping of the base part (9) of the slug (7) is performed and wherein an inner cavity is formed that extends longitudinally in said slug (7) through said base part (9) and said contact part for substantially all the longitudinal extension of the contact part (8) but for a bottom end portion (38) thereof; and the fourth (60) deformation station at which a through hole (11) is eventually formed inside said slug (7) by cutting off of said bottom end portion.
23. The apparatus according to claims 21 or 22, wherein said first deformation station (30) is provided with a said segmental die (27) that is substantially shaped as a truncated cone bushing with an outer tapering surface and an inner hole with a shaping die surface, said bushing being formed by a plurality of segments (29) and being slidable in said die holder (26) with the tapering outer surface thereof in sliding contact with a complementarily tapered surface of the die holder (26) between a protruding position in which said segments are spread apart in order to receive the base part (9) of a slug (7) to be worked, and an inserted position in which said segments are closed together to form a first half-die adapted to shape by plastic deformation said base part of the slug (7).
24. The apparatus according to claim 19 or 22 or 23, wherein said die punch (28) has a pushing end (31) that is shaped so as push, upon closure of said segments (29), into said base part of the slug (7) to form therein an inner cavity.
25. The apparatus of any of the claims 19-24, characterised in that said punch insert (25) is shaped as a sleeve that has an inside taper adapted to shape a corresponding taper of the contact part (8) of the finished terminal, said inside taper forming a second half-die that cooperates with said first half-die formed by the segmental die (27) for the plastic deformation of the slug (7).
26. The apparatus of any of claims 20 to 25, wherein said fixed part (20) is provided with at least one first bias spring (32) and at least one second bias spring (33) that are mounted so as to bias said segmental die (27) in said protruding position in which said segments (29) are spread apart.
27. The apparatus of claim 23, wherein said hammer punch (24) is actuatable to move along said work axis (Y) to push on said slug so as to overcome the bias exerted by said first and second bias springs (32, 33) and move said segmental die (27) in said inserted position, whereupon said first and second half-dies form together a shaping die (34) adapted to enclose and shape said slug (7) at a desired shape by way of pressure exerted by said hammer punch (24) on a slug end.
28. The apparatus of any of the claims 20 or 27, characterised in that said hammer punch (24) has an active end (37) provided with a cutting profile adapted to cut out said bottom end portion of the cavity to form in said slug (7) said through hole (11) and an inner channel (36) with an outlet opening (39) adapted to allow knockout of the cut bottom end portion (38), and in that said die punch (28) is provided with an inner hole (35) connectable to a pressurised air feeding (41) for pushing the cut out bottom end portion (38) through said inner channel (36).
29. The apparatus of claims 15 or 21, characterised in that said shaping and deformation stations (2, 30, 40, 50, 60, 80) are mounted on a frame (70) provided with movement actuation means (71) for actuating said movable part (20) and said die punch (28).
30. A lead terminal pole for an accumulator made by way of the method according to claims 1-13 and with an apparatus as set forth in claims 14-29.
CA2584533A 2004-11-17 2005-11-14 Method and apparatus for the manufacture of a terminal for a lead-acid type accumulator and a terminal manufactured therewith Expired - Fee Related CA2584533C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0425342A GB2420300B (en) 2004-11-17 2004-11-17 Method and apparatus for the manufacture of a terminal for a lead-acid type accumulator and a terminal manufactured therewith
GB0425342.3 2004-11-17
PCT/EP2005/012176 WO2006053698A1 (en) 2004-11-17 2005-11-14 Method and apparatus for the manufacture of a terminal for a lead-acid type accumulator and a terminal manufactured therewith

Publications (2)

Publication Number Publication Date
CA2584533A1 true CA2584533A1 (en) 2006-05-26
CA2584533C CA2584533C (en) 2012-10-02

Family

ID=33548432

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2584533A Expired - Fee Related CA2584533C (en) 2004-11-17 2005-11-14 Method and apparatus for the manufacture of a terminal for a lead-acid type accumulator and a terminal manufactured therewith

Country Status (16)

Country Link
US (1) US7946033B2 (en)
EP (1) EP1831942B1 (en)
JP (1) JP5143564B2 (en)
KR (1) KR20070085546A (en)
CN (1) CN101057352B (en)
AT (1) ATE497261T1 (en)
CA (1) CA2584533C (en)
DE (1) DE602005026171D1 (en)
ES (1) ES2380140T3 (en)
GB (1) GB2420300B (en)
IL (1) IL183270A (en)
PL (1) PL1831942T3 (en)
RU (1) RU2374721C2 (en)
SI (1) SI1831942T1 (en)
UA (1) UA91990C2 (en)
WO (1) WO2006053698A1 (en)

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Also Published As

Publication number Publication date
PL1831942T3 (en) 2011-09-30
IL183270A (en) 2013-02-28
WO2006053698A1 (en) 2006-05-26
SI1831942T1 (en) 2011-06-30
RU2374721C2 (en) 2009-11-27
IL183270A0 (en) 2007-09-20
ES2380140T3 (en) 2012-05-09
CA2584533C (en) 2012-10-02
EP1831942B1 (en) 2011-01-26
KR20070085546A (en) 2007-08-27
US7946033B2 (en) 2011-05-24
DE602005026171D1 (en) 2011-03-10
GB2420300A (en) 2006-05-24
GB0425342D0 (en) 2004-12-22
ATE497261T1 (en) 2011-02-15
UA91990C2 (en) 2010-09-27
RU2007122473A (en) 2008-12-27
JP2008521183A (en) 2008-06-19
US20080233779A1 (en) 2008-09-25
EP1831942A1 (en) 2007-09-12
JP5143564B2 (en) 2013-02-13
CN101057352B (en) 2011-04-13
CN101057352A (en) 2007-10-17
GB2420300B (en) 2007-01-10

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