US2981977A - Mold locking ring - Google Patents

Mold locking ring Download PDF

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Publication number
US2981977A
US2981977A US80117459A US2981977A US 2981977 A US2981977 A US 2981977A US 80117459 A US80117459 A US 80117459A US 2981977 A US2981977 A US 2981977A
Authority
US
United States
Prior art keywords
ring
lever
mold
section
adjacent
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.)
Expired - Lifetime
Application number
Other languages
English (en)
Inventor
John J Fannen
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.)
Super Mold Corp of California
Original Assignee
Super Mold Corp of California
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 Super Mold Corp of California filed Critical Super Mold Corp of California
Priority to US80117459 priority Critical patent/US2981977A/en
Priority to GB705860A priority patent/GB907515A/en
Priority to GB705960A priority patent/GB869107A/en
Priority to SE259960A priority patent/SE301228B/xx
Priority to DES67582A priority patent/DE1190649B/de
Priority to BE588898A priority patent/BE588898A/fr
Priority to DK111060A priority patent/DK104078C/da
Priority to DK455063A priority patent/DK106123C/da
Application granted granted Critical
Publication of US2981977A publication Critical patent/US2981977A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
    • B29D30/54—Retreading
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C2035/0211—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould resistance heating
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/20—Clamps
    • Y10T292/205—Ring
    • Y10T292/212—With expanding or contracting means
    • Y10T292/216—Toggle lever

Definitions

  • -A major object of the present invention is to provide an improved latch for the free ends of the ring, which enables a cinching-up or clamping action, to any extent desired, to be imparted to the ring after the latch is engaged between said free ends.
  • the latch includes actuating handles, and in order to prevent accidental or inadvertent manual movement of the handles in a latch releasing direction, an automatically functioning safety device is provided to prevent such handle movement except when intended; the provision of such important feature being another object of the invention.
  • a further object of the invention is to provide breakaway means for the ring sections at their hinged ends so that-upon outward or opening movement of the sections-they will be released from wedging engagement with the mold adjacent said hinged ends.
  • An additional object of the invention is to provide a practical, reliable, and durable mold locking ring, and one which will be exceedingly effective for the purpose for which it is designed, v
  • v is Fig. 1 is'a plan view of the improved mold locking ring, shown in its locked position.
  • Fig. 2 is a fragmentary enlarged plan view of the ring, shown in :1 released position.
  • Fig. 3 is a similar view, partly broken out and in section, showing the action of the break-away levers.
  • Fig. 4 is an enlarged fragmentary plan of the ring, mainly in section, and showing the same in the locked position of Fig. 1.
  • Fig. 5 is a fragmentary side elevation 'of the ring in its locked position.
  • Atent ICC Fig. 6 is a cross section on line 66 of Fig. 4.
  • Fig. 7 is an enlarged sectional plan of one of the ring hinges, showing the break-away lever mounted in connection therewith.
  • l v d Fig. 8 is a fragmentary cross section on line 8--8 of Fig. 1.
  • Trunnions 7 are secured to, and project outwardly from, sections 4 and 5;-said trunnions being in alinement diametrally of the ring 2 when the latter is closed about the mold and being for the purpose recited in the aforementioned application for patent.
  • the ring latching and release or break-away mechanism which forms the subject matter of this invention, is constructed as follows: r v
  • the outer portion of the pin is threaded, as at 15 while the outer portion of the handle is tapped, asat 16, and engages the threaded portion of.
  • the inner portion of the handle -1 4 is formed as a skirt '17 which overlies the outer portion of the shank 12 in t'urnable relation thereto; a thrust washer 18 being seated in the handle and engaging the outer end of the shank.
  • the pin 13 is prevented from rotating in the shank 1 2 by means of a cross pin 19 projecting through the pinparallel to the axis of the ring 2, and through elongated slots 20 in the upper and lower facesof said shank.
  • the cross pin 19 supports the adjacent ends of I links 21, which are of a length to extend beyond the cam end of the lever 9 and are connected at their ends opposite the cross pin 19 by a fixed latch pin 22, so that the links 21 and said pin 22 form a rigid latch unit.
  • the spacing between the links 21 is such that they not only straddle- 1 the shank 12, but the ears 8 as well.
  • the latch pin 22 is adapted, when the rings 4 and'S are" in a closed position about the mold, to 'releasably engage in a retaining notch 23 which faces outwardly relative to ring section 5.
  • This notch is cut in the adjacent endof a lever 24 which normally extends tangentially of ring section 5 in a direction away from lever 9.
  • Lever 24' is pivoted near its notched end, as at 25, between ears 26 mounted on and projecting outwardly from ring section 5 adjacent its free end.
  • lever 24 is formed as a handle 27.
  • a simple safety device comprises a free swinging bar 28 pivoted on the outer side of the shank 12 at a point between the lever pivot 10 and the pin 19, as shown at 29.,
  • the bar 28 when in a normal depending position overlaps the outer edges of both links 21, as shown in Fig. 5, and thus prevents the lever 9 froin being swung out to the latch unit releasing position of Fig. 2.
  • the bar 28 is, however, of a lesser width than the depth of the shank 12 or the spacing between the links 21, and is provided on its lower or free end with an outwardly projecting thumb piece 30.
  • the ring sections 3, 4, and are of flaring channel form in section, as shown in Fig. 8, and when tightly clamped about the mold tend to wedge on the mating, circumferential ribs 31 of the matrix halves 1, and which the locking ring 2 engages.
  • each hinge pin 42 is engaged, between the cooperating male and female ears 41 of said hinge, by a spring clip 45 having outwardly extending fingers 46 diverging relative to each
  • An adjustable set screw 47 is mounted in one finger 46 and projects toward the other finger. The fingers project through an opening 48 formed between the cross plates 49 which connect the corresponding hinge ears outwardly of the hinge pin 42.
  • a short curvededge' lever 32 Disposed between the ears 8 between the'adjacent portion of the lever 9 and the ring section 4 is a short curvededge' lever 32 which extends generally tangentially of said section.
  • This lever 32 is pivoted at its end farthest (from the free end of said section on the ears 8. as at 33; the ring section 4 having a longitudinal slot 34 through which the lever 32 may project.
  • the edge of the adjacent end portion of the lever 9 which faces lever 32 is formed as a cam surface 35.
  • a similar lever 36 is pivoted at one end, as at 37, between the ears 26 and projects through a slot 38 in the ring section 5.
  • the adjacent face of the lever 24, opposite the notch 23, is formed as a cam surface 39 for engagement with the free end of lever 36.
  • An outward pull on handle 27 will cause lever 36 to be pressed against the periphery of the mold ribs 31 to break the ring section 5 away from said ribs.
  • a rigid finger 40 is fixed on the hinged end of the section 4 between the spaced ears 41 of hinge 6; the hinge pin 42 being radially outward of the ring sections and finger. Said finger projects beyond the adjacent end of ring section 4 and through a slot 43 in the adjacent end in ring section 3 for pressing engagement with the periphery of the ribs 31 upon any material opening-out movement being imparted to ring section 4.
  • a pair of opposed arcuate ring sections initially free of each'other at one end with such ends normally dispoesd in adjacent and facing relation when the ring is engaged about the mold, and manually operable latch means to releasably connect the sections at such free ends thereof;
  • said latch means comprising a member mounted on one ring section adjacent said free end thereof and having a notch facing radially out from said section, a lever pivoted adjacent one end on the other ring section adjacent the free end thereof with the pivotal axis parallel to the axis of the ring, a latch unit mounted on the lever and including a link pivoted at one end on the lever at a point between the pivot of the lever and the outer end thereof, and a pin onthe link at the other end thereof arranged to enter the notch when the lever is swung outwardly from said other ring section to a predetermined angular position relative thereto; the link being arranged to extend along and overlie the lever
  • a pair of opposed arcuate ring sections initially free of each other at one end with such ends normally disposed in adjacent and facing relation when the ring is engaged about the mold, and manually operable latch means to releasably connect the sections at such free ends thereof;
  • said latch means comprising a member mounted on one ring section adjacent said free end thereof and having a notch facing radially out from said section, a lever pivoted adjacent one end on the other ring section adjacent the free end thereof with the pivotal axis parallel to the axis of the ring, a latch unit mounted on the lever and including a link pivoted at one end on the lever at a point between the pivot of the lever and the outer end thereof and a cross pin on the link at the other end thereof arranged to enter the notch when the lever is swung outwardly from'said other ring section to a predetermined angular position relative thereto, the lever including a rotatable handle at its outer end, and
  • a pair of opposed arcuate ring sections initially free of each other at one end with such ends normally disposed in adjacent and facing relation when the ring is engaged about the mold manually operable latch means to releasably connect the sections at such free ends thereof, said means including a control lever pivoted adjacent one end on one section adjacent the free end thereof and radiallyout therefrom. the lever pivot being parallel to the axis of the ring, and means mounted on said one ring section and actuated upon outward swinging of the lever a predetermined amount from said section, to exert a break-away pressure against the periphery of a mold embraced by the ring.
  • said last named means comprises another lever pivotally supported at one end from said one ring section and extending generally tangentially thereof in a position between the control lever pivot and said section, the latter being slotted along the other lever for engagement thereof with the periphery of the mold, and a cam surface on the edge of the control lever adjacent the pivoted end thereof to engage said other lever and urge the same against the periphery of the mold with such outward swinging of said control lever.
  • a locking ring to surround a full-circle mold in clamping relation with the periphery thereof comprising separate arcuate ring sections, a hinge connecting the sections at one end thereof for outward swinging of one section relative to the other, and means mounted on one section adjacent the hinge and functioning upon outward swinging of said section relative to the mold to move both sections at said end radially out from the mold.
  • said means comprises a rigid finger secured on the periphery of said one section and projecting beyond the hinged end thereof for engagement of the projecting end of said finger with the periphery of the mold.
  • a pair of opposed arcuate ring sections initially free of each other at one end with such ends normally disposed in adjacent and facing relation when the ring is engaged about the mold, and manually operable latch means to releasably connect the sections at such free ends thereof;
  • said latch means comprising opposed hand levers pivotally mounted on the ring sections adjacent said free ends, the levers normally extending generally tangentially of the ring, an over-dead-center latch unit releasably connecting the levers and normally clamping the ring about the mold, said latch unit being releasable upon outward swinging of one lever, and means between said levers and the mold operative to forcefully disengage the ring sections from the mold upon outward swinging of both levers, said one lever then being swung outward beyond its latch releasing position.
  • a pair of opposed arcuate ring sections initially free of each other at one end with such ends normally disposed in adjacent and facing relation when the ring is engaged about the mold manually operable latch means to releasably connect the sections at such free ends thereof, said latch means including levers pivotally mounted on the ring sections adjacent said free ends, and means between said levers and the mold operative to forcefully disengage the ring sections from the mold upon swinging of both levers, the initial swinging of one lever releasing the latch unit.
  • a locking ring to surround a full-circle mold in clamping relation with the periphery thereof comprising separate arcuate ring sections, a hinge connecting the sections at one end thereof for outward swinging of one section relative to the other, said hinge comprising a pair of spaced ears on each section, the pairs of ears being arranged in cooperating overlapping relation, a.
  • transverse hinge pin supported by and connecting the ears, cross plates connecting the ears outwardly of the pin and leaving a relatively wide opening therebetween in which the pin is exposed, a spring clip on the pin between the ears including fingers projecting outwardly through the opening in normally diverging relation to each other and in clearance relation to the adjacent transverse edges of the plates, and an adjustable set screw mounted in one finger in projecting relation toward the other finger and terminating in spaced relation thereto.
  • a pair of opposed arcuate ring sections initially free of each other at one end with such ends normally disposed in adjacent and facing relation when the ring is engaged about the mold, and manually operable latch means to releasably connect the sections at such free ends thereof;
  • said latch means comprising a lever pivoted adjacent one end on one ring section adjacent said free end thereof and having an outwardly facing notch at the end of the lever nearest the other ring section, another lever pivoted adjacent one end on the other ring section adjacent the free end thereof, the pivots of said levers being parallel to the axis of the ring, latch means releasably connecting the levers and including a link mounted at one end on said other lever and having a pin on the other end for engagement with the notch, the levers being substantially tangent to the ring and extending in opposite directions when the link is engaged and the ring sections are in clamping engagement with the mold, members movably mounted on the ring sections adjacent and radi

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
US80117459 1959-03-23 1959-03-23 Mold locking ring Expired - Lifetime US2981977A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US80117459 US2981977A (en) 1959-03-23 1959-03-23 Mold locking ring
GB705960A GB869107A (en) 1959-03-23 1960-02-29 Improvements relating to tyre retreading moulds
GB705860A GB907515A (en) 1959-03-23 1960-02-29 Locking ring for tyre retreading mould
DES67582A DE1190649B (de) 1959-03-23 1960-03-15 Schliessring fuer Laufflaechenerneuerungsformen
SE259960A SE301228B (xx) 1959-03-23 1960-03-15
BE588898A BE588898A (fr) 1959-03-23 1960-03-22 Anneau de verrouillage pour moules de vulcanisation.
DK111060A DK104078C (da) 1959-03-23 1960-03-23 Låsering til dækforme.
DK455063A DK106123C (da) 1959-03-23 1960-03-23 Hængsel til en låsering til en dækform.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80117459 US2981977A (en) 1959-03-23 1959-03-23 Mold locking ring

Publications (1)

Publication Number Publication Date
US2981977A true US2981977A (en) 1961-05-02

Family

ID=25180385

Family Applications (1)

Application Number Title Priority Date Filing Date
US80117459 Expired - Lifetime US2981977A (en) 1959-03-23 1959-03-23 Mold locking ring

Country Status (6)

Country Link
US (1) US2981977A (xx)
BE (1) BE588898A (xx)
DE (1) DE1190649B (xx)
DK (2) DK104078C (xx)
GB (2) GB869107A (xx)
SE (1) SE301228B (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137032A (en) * 1960-03-29 1964-06-16 Donald M Macmillan Roll top matrix loader
US3309738A (en) * 1964-09-01 1967-03-21 Friedman Sol Casting mold and clamping means
US3341898A (en) * 1965-08-24 1967-09-19 Charles E Branick Latch and joint construction for a curing rim
US3407441A (en) * 1966-10-14 1968-10-29 Nat Standard Co Locking mechanism for clamping a die on an extruder
US3474499A (en) * 1967-08-07 1969-10-28 James C Heintz Co The Tire mold clamping ring
US3484903A (en) * 1967-04-19 1969-12-23 Nat Standard Co Automatic clamp band
US4332536A (en) * 1980-04-09 1982-06-01 Nrm Corporation Hydraulic tire press
US4390334A (en) * 1980-04-09 1983-06-28 Nrm Corporation Hydraulic tire press
US4686129A (en) * 1983-01-27 1987-08-11 Kabushiki Kaisha Kobe Seiko Sho Mold clamping mechanism for tire curing machines
US5074012A (en) * 1991-05-17 1991-12-24 Rotex, Inc. Self-locking hold-down clamp
US5297444A (en) * 1992-09-04 1994-03-29 Gaston County Dyeing Machine Company Toggle assembly
US6007120A (en) * 1998-07-09 1999-12-28 Vogt; Randall L. Clamping ring with removable handle
US20100206150A1 (en) * 2009-02-19 2010-08-19 Pass Stanztechnik Ag Stamping tool

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US484235A (en) * 1892-10-11 Pltjnkett
US491645A (en) * 1893-02-14 Stop-hinge
US689201A (en) * 1901-12-17 Hinge
FR549989A (fr) * 1922-04-10 1923-02-23 Verrou à étrier avec dispositif de rattrapage de jeu
US1455625A (en) * 1920-05-28 1923-05-15 Langenau Mfg Company Fastening device
US1462286A (en) * 1921-11-23 1923-07-17 Jepson William Wash machine
US2035844A (en) * 1934-01-29 1936-03-31 Stachow Carl Friedrich Arrangement of door buffers on the doors of motor cars
GB481883A (en) * 1936-09-18 1938-03-18 W H Bodin & Company Ltd Improvements in or relating to fastening devices for doors, lids and like closure members
GB551457A (en) * 1942-10-08 1943-02-23 Willen Key Company Ltd Improvements in or relating to toggle fastenings
GB664608A (en) * 1949-03-02 1952-01-09 Erich Hammesfahr Improvements in or relating to vulcanising pneumatic vehicle tyres and inner tubes

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US484235A (en) * 1892-10-11 Pltjnkett
US491645A (en) * 1893-02-14 Stop-hinge
US689201A (en) * 1901-12-17 Hinge
US1455625A (en) * 1920-05-28 1923-05-15 Langenau Mfg Company Fastening device
US1462286A (en) * 1921-11-23 1923-07-17 Jepson William Wash machine
FR549989A (fr) * 1922-04-10 1923-02-23 Verrou à étrier avec dispositif de rattrapage de jeu
US2035844A (en) * 1934-01-29 1936-03-31 Stachow Carl Friedrich Arrangement of door buffers on the doors of motor cars
GB481883A (en) * 1936-09-18 1938-03-18 W H Bodin & Company Ltd Improvements in or relating to fastening devices for doors, lids and like closure members
GB551457A (en) * 1942-10-08 1943-02-23 Willen Key Company Ltd Improvements in or relating to toggle fastenings
GB664608A (en) * 1949-03-02 1952-01-09 Erich Hammesfahr Improvements in or relating to vulcanising pneumatic vehicle tyres and inner tubes

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137032A (en) * 1960-03-29 1964-06-16 Donald M Macmillan Roll top matrix loader
US3309738A (en) * 1964-09-01 1967-03-21 Friedman Sol Casting mold and clamping means
US3341898A (en) * 1965-08-24 1967-09-19 Charles E Branick Latch and joint construction for a curing rim
US3407441A (en) * 1966-10-14 1968-10-29 Nat Standard Co Locking mechanism for clamping a die on an extruder
US3484903A (en) * 1967-04-19 1969-12-23 Nat Standard Co Automatic clamp band
US3474499A (en) * 1967-08-07 1969-10-28 James C Heintz Co The Tire mold clamping ring
US4332536A (en) * 1980-04-09 1982-06-01 Nrm Corporation Hydraulic tire press
US4390334A (en) * 1980-04-09 1983-06-28 Nrm Corporation Hydraulic tire press
US4686129A (en) * 1983-01-27 1987-08-11 Kabushiki Kaisha Kobe Seiko Sho Mold clamping mechanism for tire curing machines
US5074012A (en) * 1991-05-17 1991-12-24 Rotex, Inc. Self-locking hold-down clamp
US5297444A (en) * 1992-09-04 1994-03-29 Gaston County Dyeing Machine Company Toggle assembly
US6007120A (en) * 1998-07-09 1999-12-28 Vogt; Randall L. Clamping ring with removable handle
US20100206150A1 (en) * 2009-02-19 2010-08-19 Pass Stanztechnik Ag Stamping tool

Also Published As

Publication number Publication date
SE301228B (xx) 1968-05-27
DK106123C (da) 1966-12-19
BE588898A (fr) 1960-07-18
GB907515A (en) 1962-10-03
GB869107A (en) 1961-05-31
DE1190649B (de) 1965-04-08
DK104078C (da) 1966-03-28

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