US3209414A - Press head for sand molds - Google Patents

Press head for sand molds Download PDF

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Publication number
US3209414A
US3209414A US206880A US20688062A US3209414A US 3209414 A US3209414 A US 3209414A US 206880 A US206880 A US 206880A US 20688062 A US20688062 A US 20688062A US 3209414 A US3209414 A US 3209414A
Authority
US
United States
Prior art keywords
diaphragm
head
frame
piston
press head
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
US206880A
Other languages
English (en)
Inventor
Russell W Taccone
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.)
TACCONE CORP
Original Assignee
TACCONE CORP
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
Priority to BE634361D priority Critical patent/BE634361A/xx
Application filed by TACCONE CORP filed Critical TACCONE CORP
Priority to US206880A priority patent/US3209414A/en
Priority to FR939691A priority patent/FR1361679A/fr
Priority to GB2606?/63A priority patent/GB1019809A/en
Priority to CH814163A priority patent/CH419462A/fr
Application granted granted Critical
Publication of US3209414A publication Critical patent/US3209414A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/10—Compacting by jarring devices only
    • B22C15/12—Compacting by jarring devices only involving mechanical gearings

Definitions

  • This invention relates to molding machines and, more particularly, to the type of molding machines known as diaphragm molding machines.
  • a molding machine wherein a diaphragm type molding machine is shown in one embodiment and, in the other embodiments, a molding machine utilizing a plurality of closely spaced pistons is used.
  • an object of the present invention to provide an improved molding machine.
  • Another object of the invention is to provide an improved molding machine which will make molds of uniform hardness.
  • the figure of drawing is a transverse cross sectional view of a molding machine head according to the invention.
  • the molding machine head shown in FIG. 1 is adapted to be mounted on a press ram of a molding machine and to be forced down into sand inside a flask such as the flask shown in the other embodiments of the invention or the flask could be forced up against the head.
  • the flexible member 28 of the compensating backup may be consrtucted of a solid, flexible, or semi-flexible material or of flexible material containing one or more cavities to provide special resistance for special pattern configuration.
  • the compensating backup may be profiled to match special pattern configuration.
  • the air space contained between the member 28 and the flexible diaphragm 16 may be varied to provide special yielding force to match special pattern configuration. It may be used as a fixed head with the mold being squeezed up to the head or may be mounted on a down-acting squeeze cylinder so it is squeezed down into the mold. Air pressure may be put into a space 26 in order for a compensating action in the lower area and, also, (if low pressure) to keep the diaphragm up.
  • the spacer pad 31 varies the lower space between the diaphragm 16 and an upper chamber 5. It also regulates the total stroke of the compensating backup. The spacer pads 31 will vary only the upper chamber for air compression ratio.
  • Air pressure could be constant or it could vary. Pressure can be injected and locked in the space 26. Air injection can be timed with a suitable control circuit synchronized with the machine operation.
  • the head has an outer frame 11 which may be rectangular and this frame is made of rigid material such as steel. 'It has a diaphragm frame 12 attached to its lower end.
  • the diaphragm frame 12 is made up of an upper frame 13 and a lower frame 14 which are held in spaced relation and sandwich the outer peripheral edge of the diaphragm 16 therebetween.
  • the diaphragm 16 may be made up of a heavy piece of rubber covered with a sheet 16' of urathane or other abrasive resistant material.
  • the two diaphragm frame sections 13 and 14 are held in spaced relation by a plate 17 which is welded to both frame sections 13 and 14.
  • the diaphragm is held in place by bolts 18 which extend through holes in both frame sections and have cylindrical tube like spacers 1-9 which extend through holes in the diaphragm and rest against each of the two frame sections 13 and 14 to hold them in spaced relation.
  • Bolts 18 threadably engage threaded holes in the frame 11.
  • the piston frame 20 is slidably supported inside the frame 11 and has flanges 21 which rest on a flange 22 inside the frame 11.
  • the head is suitable to be attached to an upper head 24 which is bolted to the frame 11 by means of bolts 25.
  • the air space 26 is defined between an upper diaphragm 27 and the head 24.
  • a molding machine head adapted to enter the open top of a flask, said head having a rigid frame defining the rim of an open cavity therein, a first diaphragm made of a sheet of flexible material having its edges attached to said frame, a piston reciprocably mounted in said head, said piston having a resilient block attached thereto, said block being coextensive with substantially all of the area of said first diaphragm, a second diaphragm on the opposite side of said block from said first diaphragm, said second diaphragm having its peripheral edges attached to said head, said second diaphragm being substantially coextensive with said piston, and fluid means to urge said second diaphragm downward to force said block into engagement with said first diaphragm.
  • a head adapted to exert a pressure on material
  • said head having a rigid frame defining the rim of an open cavity therein
  • a first diaphragm made of a sheet of flexible material having its edges attached to said frame
  • said piston having means coextensive with substantially all of the area of said first diaphragm engaging said first diaphragm,
  • said second diaphragm having its peripheral edges attached to said head
  • said second diaphragm being substantially coextensive 408,386 8/89 Moore 22-42 with said piston, 2,715,758 8/55 Taccone 2242 and fluid means to urge said second diaphragm doWn- 2,857,636 10/58 W'hitsell 22-42 Ward to force said head into engagement with said 2,859,796 11/58 Taunton 100211 first diaphragm. 5

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
US206880A 1962-07-02 1962-07-02 Press head for sand molds Expired - Lifetime US3209414A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE634361D BE634361A (fr) 1962-07-02
US206880A US3209414A (en) 1962-07-02 1962-07-02 Press head for sand molds
FR939691A FR1361679A (fr) 1962-07-02 1963-06-28 Dispositif pour tasser une matière granulaire
GB2606?/63A GB1019809A (en) 1962-07-02 1963-07-01 Means for compacting a particulate material
CH814163A CH419462A (fr) 1962-07-02 1963-07-01 Dispositif pour tasser une matière granulaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US206880A US3209414A (en) 1962-07-02 1962-07-02 Press head for sand molds

Publications (1)

Publication Number Publication Date
US3209414A true US3209414A (en) 1965-10-05

Family

ID=22768364

Family Applications (1)

Application Number Title Priority Date Filing Date
US206880A Expired - Lifetime US3209414A (en) 1962-07-02 1962-07-02 Press head for sand molds

Country Status (5)

Country Link
US (1) US3209414A (fr)
BE (1) BE634361A (fr)
CH (1) CH419462A (fr)
FR (1) FR1361679A (fr)
GB (1) GB1019809A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3284858A (en) * 1964-02-18 1966-11-15 Molding machine and head with pressure compensating provision
US3397737A (en) * 1965-08-03 1968-08-20 Altamil Corp Foundry mold conveying apparatus with pneumatic diaphragm clamping means
US6578401B2 (en) * 2001-09-28 2003-06-17 Valiant Corporation Hemming machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672270A5 (fr) * 1986-12-17 1989-11-15 Fischer Ag Georg
CH684683A5 (de) * 1991-06-03 1994-11-30 Fischer Georg Giessereianlagen Presshaupt für eine Pressvorrichtung für Sandformen.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US364948A (en) * 1887-06-14 Matthew eobeet moobe
US408386A (en) * 1889-08-06 Sand molding machine
US2715758A (en) * 1952-04-03 1955-08-23 Taccone Pneumatic Foundry Equi Machine for packing sand in a mold box
US2857636A (en) * 1958-10-28 Flexible press head for pressure
US2859796A (en) * 1953-06-30 1958-11-11 Wilts United Dairies Ltd Means for sealing materials by heat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US364948A (en) * 1887-06-14 Matthew eobeet moobe
US408386A (en) * 1889-08-06 Sand molding machine
US2857636A (en) * 1958-10-28 Flexible press head for pressure
US2715758A (en) * 1952-04-03 1955-08-23 Taccone Pneumatic Foundry Equi Machine for packing sand in a mold box
US2859796A (en) * 1953-06-30 1958-11-11 Wilts United Dairies Ltd Means for sealing materials by heat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3284858A (en) * 1964-02-18 1966-11-15 Molding machine and head with pressure compensating provision
US3397737A (en) * 1965-08-03 1968-08-20 Altamil Corp Foundry mold conveying apparatus with pneumatic diaphragm clamping means
US6578401B2 (en) * 2001-09-28 2003-06-17 Valiant Corporation Hemming machine

Also Published As

Publication number Publication date
FR1361679A (fr) 1964-05-22
BE634361A (fr)
CH419462A (fr) 1966-08-31
GB1019809A (en) 1966-02-09

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