GB757602A - Improvements in or relating to a method and means for the mechanical preparation of moulds from granular material - Google Patents

Improvements in or relating to a method and means for the mechanical preparation of moulds from granular material

Info

Publication number
GB757602A
GB757602A GB26111/53A GB2611153A GB757602A GB 757602 A GB757602 A GB 757602A GB 26111/53 A GB26111/53 A GB 26111/53A GB 2611153 A GB2611153 A GB 2611153A GB 757602 A GB757602 A GB 757602A
Authority
GB
United Kingdom
Prior art keywords
moulding
frame
box
piston
sand
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
Application number
GB26111/53A
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.)
Individual
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 GB757602A publication Critical patent/GB757602A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing
    • B22C15/30—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing by both pressing and jarring devices

Abstract

757,602. Moulding-machines. BUHRER, E. Sept. 22, 1953 [Oct. 22, 1955], No. 26111/53. Class 83 (1). In foundry moulding, the granular material is subjected to a preliminary and a final compression, and a surplus of material is initially poured over the pattern and removed between the preliminary and final compression operations, the surplus material being supported by means which increase the height of the moulding-box. A moulding-machine comprises a ramming piston 2 and a jolt piston 3, a pattern-plate and pattern 4, 5, being supported on a jolt table 3a. A frame 7 is supported by taperpins 37 on a head 36 which is rotatable about, and vertically movable by means of, a piston-rod 38, so that the frame may be swung into a position resting on a moulding-box 6, the piston-rod 38 being lowered so that the pins 37 disengage from the frame 7. The edges of the frame form a pyramid-shaped extension to the moulding-box, and sand is fed thereto from a silo 43 through a sieve 42 vibrated by an electromagnet 44, a predetermined amount being sieved by a time switch in the control circuit. The flask is then jolted and surplus sand removed by a knife 8 which is moved across the frame 7 by endless-chains driven through a piston-operated rack, pins on the chain-sprockets 13 opening a flap 9 to allow the surplus sand to be swept therethrough by the knife. The jolting-blow is resiliently damped by bar-type impact members 46 in the press piston 2, made of highly elastic material such as synthetic resins re- . inforced with fabric or paper, so that the uniformity of the packing is improved. The frame 7 is then engaged by the pins 37 and lifted off the frame 6, leaving the precompressed sand projecting above the top of the moulding- box. A squeeze board 30 is then rotated into position over the moulding-box, which is pressed against it to compress the sand as far as the top edge of the moulding box.
GB26111/53A 1952-10-22 1953-09-22 Improvements in or relating to a method and means for the mechanical preparation of moulds from granular material Expired GB757602A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH757602X 1952-10-22

Publications (1)

Publication Number Publication Date
GB757602A true GB757602A (en) 1956-09-19

Family

ID=4534401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26111/53A Expired GB757602A (en) 1952-10-22 1953-09-22 Improvements in or relating to a method and means for the mechanical preparation of moulds from granular material

Country Status (4)

Country Link
US (1) US2842817A (en)
BE (1) BE523431A (en)
DE (1) DE1058702B (en)
GB (1) GB757602A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH604967A5 (en) * 1974-12-10 1978-09-15 Erwin Buehrer
US4593739A (en) * 1983-12-30 1986-06-10 Outboard Marine Corporation Method of and apparatus for packing sand around a mold pattern by vibration
CN105252809A (en) * 2015-11-10 2016-01-20 北京京城环保股份有限公司 Die and method for curing molding of bulk materials

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329814A (en) * 1885-11-03 Machine for molding wheels
US33291A (en) * 1861-09-17 Heney a
US386951A (en) * 1888-07-31 Art of preparing sand molds
US177395A (en) * 1876-05-16 Improvement in molder s flasks
DE106821C (en) *
US704952A (en) * 1894-05-11 1902-07-15 Marcellin C Adams Method of forming sand molds.
AT57020B (en) * 1911-12-18 1912-12-27 Bernhard Keller Method and machine for compacting the molding sand by vibrating.
US1554402A (en) * 1921-08-27 1925-09-22 Frederich W Burgdorfer Molding apparatus
US1756776A (en) * 1926-06-02 1930-04-29 New Process Multi Castings Com Molding machine
US1806042A (en) * 1929-10-31 1931-05-19 Lionel A Carter Machine for filling molding flasks
US1962734A (en) * 1931-04-10 1934-06-12 Western Electric Co Vibrating screen for molding
GB394667A (en) * 1931-12-28 1933-06-28 Carborundum Co Improvements in or relating to bonded articles such as abrasive wheels, and methods of making them
DE741383C (en) * 1933-12-08 1943-11-10 Zimmermann Gustav Ruettelforming machine
US2209792A (en) * 1938-02-14 1940-07-30 S P O Inc Molding machine
US2420392A (en) * 1942-12-21 1947-05-13 Herbert S Simpson Foundry sand reclaiming system and method
DE833243C (en) * 1946-01-28 1952-03-06 Fischer Ag Georg Forming machine with rocking piston
US2533959A (en) * 1948-12-09 1950-12-12 Fischer Ag Georg Shockless jolting device for molding machines
US2614303A (en) * 1949-09-21 1952-10-21 Duncan Foundry And Machine Wor Molding process

Also Published As

Publication number Publication date
DE1058702B (en) 1959-06-04
US2842817A (en) 1958-07-15
BE523431A (en)

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