US3543832A - Apparatus for the manufacture of molds for casting metals - Google Patents

Apparatus for the manufacture of molds for casting metals Download PDF

Info

Publication number
US3543832A
US3543832A US631673A US3543832DA US3543832A US 3543832 A US3543832 A US 3543832A US 631673 A US631673 A US 631673A US 3543832D A US3543832D A US 3543832DA US 3543832 A US3543832 A US 3543832A
Authority
US
United States
Prior art keywords
molds
housing
pipe
manufacture
mold
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
US631673A
Other languages
English (en)
Inventor
Horst Erwin Langer
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Application granted granted Critical
Publication of US3543832A publication Critical patent/US3543832A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/08—Internal vibrators, e.g. needle vibrators
    • 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
    • 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
    • B22C15/14—Compacting by jarring devices only involving pneumatic or hydraulic mechanisms

Definitions

  • Brown Attorney-Woodhams, Blanchard and Flynn ABSTRACT A vibrating apparatus adapted particularly for packing foundry sand compositions to make metal casting molds in which the vibrator housing has a removable cap made of a highly wear-resistant material and the vibrator housing is connected by means of an elastomeric collar to a tubular connecter pipe and the tubular connecter pipe has a handle construction mounted thereon by means including an elastomeric sleeve.
  • This invention relates to a process for the manufacture of molds for casting metals in which the starting material em-. ployed consists of granular molding substances, in particular for the fabrication of cores, the molding substances being compacted by vibration after having been introduced into the negative mold.
  • the molding substance is either vibrated or rammed in accordance with known techniques, these operations being performed either by means of vibrators which are fixed outside the mold-flask, or by means of vibratory rammers.
  • Vibrators of the external type do not ensure satisfactory distribution of the molding material. In fact, such devices are even wholly unsuitable for the purpose of making molds having tapered contours or pronounced recesses.
  • the molding material cannot be satisfactorily compacted unless it is poured into the flask and rammed in successive layers.
  • the highly tamped and compacted external surface cannot form an intimate bond with the contiguous layer which is poured thereon, with the result that there are thus formed virtual joints which are detrimental to the strength of the mold.
  • vibratory rammers are liable to cause direct damage to the mold surfaces of the pattern or the corebox whereas external vibrators can be employed only with metallic molds by reason of the high alternating stresses which they impart to the foundry-flasks and coreboxes.
  • the object of the present invention is to reduce to an appreciable extent the expenditure of energy and labor required in the fabrication of molds and mold elements (e.g. cores) of the type mentioned above and to improve the quality of the mold texture without any risk of damage to the pattern.
  • FIG. I is a fragmentary side elevation view of an internal vibrator of the pneumatic drive type.
  • FIG. 2 is a transverse sectional view taken along the line [H] of FIG. 1.
  • the vibratory poker l is of the pneumatic drive type in the example under consideration but can operate equally well either by hydraulic or electric means.
  • the poker is provided at its lower end with a removable screwcap la formed of material which affords high resistance to wear and is surrounded by a sleeve 2.
  • Said sleeve is fitted over a rubber collar 3 in which is inserted a tubular connecter pipe 4.
  • a rotatable handle 5 is fixed to the upper end of the connecter pipe and it is possible by actuating said handle either to start or stop the vibrator, that is to say to open or close the compressed-air intake, compressed air being supplied through a hose which is connected at 6.
  • the compressed air passes into the vibrator through an inner tube 7 and is discharged to the outside air through the annular passageway 8 between the tube 7 and the connecter pipe 4 and through discharge apertures 9.
  • a flexible tubular handle 10 which is strengthened by a sheet metal sleeve 11.
  • the connecter pipe 4 can be employed at the same time for the attachment of a lamp 12, in particular when the machine is used in molds of substantial depth.
  • the apparatus which has just been described therefore constitutes a trowel, the lower end of which works as a vibrator, so that the apparatus can be directed as required by the operator, contradistinction to poker vibrators of the known types which are employed, for example, in concrete construction work.
  • a vibration apparatus for packing foundry sand compositions to make metal casting molds comprising:
  • an elongated housing having a removable cap made of highly wear-resistant material removably secured to one end of said housing whereby said cap may contact the material to be vibrated;
  • coupling means connecting said handle construction to said other end of said housing (1) for permitting transverse or lateral motions applied to said handle construction to be transmitted to said housing and (2) for substantially preventing transmission of vibrations from said housing to said handle construction, said coupling means including:
  • a tubular connecter pipe of rigid material received within and attached to said elastomeric sleeve and extending outwardly from said other end of said housing whereby the vibrations of the housing are substantially absorbed by the elastomeric sleeve and are not substantially transmitted to the rigid connecter pipe;
  • a vibration apparatus including a further tubular pipe disposed within said connecter pipe and extending between said housing and said handle construction, said further tubular pipe being smaller than said connecter pipe to define a first flow passageway within said tubular pipe and a second flow passageway within said connecter pipe in surrounding relationship to said further tubular pipe, said passageways being used to provide for flow of pressure fluid to and from the housing.
  • a vibration apparatus including a bracket attached to the connecter pipe between the housing and the handle construction and extending sidewardly therefrom, and a lamp mounted on said bracket and extending toward said one end of the housing for illuminating the materi al being vibrated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
US631673A 1966-04-21 1967-04-18 Apparatus for the manufacture of molds for casting metals Expired - Lifetime US3543832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0069223 1966-04-21

Publications (1)

Publication Number Publication Date
US3543832A true US3543832A (en) 1970-12-01

Family

ID=7312937

Family Applications (1)

Application Number Title Priority Date Filing Date
US631673A Expired - Lifetime US3543832A (en) 1966-04-21 1967-04-18 Apparatus for the manufacture of molds for casting metals

Country Status (9)

Country Link
US (1) US3543832A (xx)
AT (1) AT279821B (xx)
BE (1) BE697116A (xx)
CH (1) CH452798A (xx)
DE (1) DE1508684B1 (xx)
ES (1) ES339512A1 (xx)
GB (1) GB1189883A (xx)
LU (1) LU53467A1 (xx)
NL (1) NL6705611A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115262979A (zh) * 2022-08-01 2022-11-01 四川力思创机械有限公司 一种气动高频振捣棒

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278996A (zh) * 2013-07-10 2015-01-14 陕西合阳风动工具有限责任公司 气动式混凝土振动器
CN110595930B (zh) * 2019-10-18 2024-04-19 青岛锦钻针业有限公司 针耐磨性测试装置
CN112412047B (zh) * 2020-10-15 2022-02-01 中国水利水电第九工程局有限公司 一种用于混凝土捣鼓用自热型振捣棒
CN115045510B (zh) * 2022-08-16 2022-10-25 山西钢建鼎元混凝土制品有限公司 一种混凝土振捣搅拌装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723062C (de) * 1938-07-10 1942-07-27 Siemens Ag Als Handgeraet ausgebildeter Formsandstampfer fuer Giessereien
DE805167C (de) * 1949-02-11 1951-05-07 Albert Falkenstein Hand-Gummistampfer zum Verdichten von Form- und Kernsand
DE1724786U (de) * 1952-07-17 1956-06-21 Hermann Wacker Innenruettelgeraet.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115262979A (zh) * 2022-08-01 2022-11-01 四川力思创机械有限公司 一种气动高频振捣棒
CN115262979B (zh) * 2022-08-01 2023-12-22 四川力思创机械有限公司 一种气动高频振捣棒

Also Published As

Publication number Publication date
AT279821B (de) 1970-03-25
LU53467A1 (xx) 1967-10-19
NL6705611A (xx) 1967-10-23
GB1189883A (en) 1970-04-29
BE697116A (xx) 1967-10-17
CH452798A (fr) 1968-03-15
ES339512A1 (es) 1968-07-16
DE1508684B1 (de) 1970-02-12

Similar Documents

Publication Publication Date Title
US3302919A (en) Apparatus for casting metal wheels
US3543832A (en) Apparatus for the manufacture of molds for casting metals
US2088123A (en) Apparatus for molding
CN107470592A (zh) 一种覆砂冷铁结构及其制作工艺
JP3126498B2 (ja) ダイカスト鋳造用崩壊性置中子
US3334390A (en) End ring trowelling attachment for concrete pipe making apparatus
US3831662A (en) Casting mold with constricting device
US6932144B2 (en) Method for casting objects with an improved riser arrangement
CN106001418B (zh) 一种铸造用排气装置及该装置制造方法
US2882569A (en) Method and apparatus for molding and hardening articles
CN110593491A (zh) 一种多重定位加固型灌浆套筒及铸造浇注方法
US3409267A (en) Riser construction with separate upper relatively large reusable section
JP2004534678A (ja) コンクリート製品の製造のためのコンクリート成型方法
US3452407A (en) Ring positioning apparatus for concrete pipe manufacture
USRE21461E (en) toman
US2538656A (en) Molding flask and method of molding
JPH10263790A (ja) 自動鋳造装置
JPS58167052A (ja) 鋳造法
CA2494036C (en) A method for casting objects with an improved riser arrangement
CN107598133A (zh) 一种大型齿轮制造方法
JPH0788627A (ja) 鋳型注入管
SU977100A1 (ru) Способ формовки в почве
US3045298A (en) Method and apparatus for shell molding
JPS632196Y2 (xx)
JPS5927264B2 (ja) 加圧造型法および装置