DE1159134B - Core blowing machine for the production of hollow cores for foundry purposes - Google Patents
Core blowing machine for the production of hollow cores for foundry purposesInfo
- Publication number
- DE1159134B DE1159134B DET12757A DET0012757A DE1159134B DE 1159134 B DE1159134 B DE 1159134B DE T12757 A DET12757 A DE T12757A DE T0012757 A DET0012757 A DE T0012757A DE 1159134 B DE1159134 B DE 1159134B
- Authority
- DE
- Germany
- Prior art keywords
- core
- production
- sand
- membrane
- blowing machine
- 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.)
- Pending
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
Description
Die Erfindung bezieht sich auf eine Kernblasmaschine zur Herstellung von Hohlkernen für Gießereizwecke, bei der zum Nachverdichten des Kernsandes in dem durch Aufsetzen eines Deckels allseitig geschlossenen Kernkasten ein durch den Deckel hindurchgeführter gelochter Hohldorn vorgesehen ist, der mit einer sackförmigen, mittels Druckluft aufblähbaren Membran bespannt ist.The invention relates to a core blowing machine for the production of hollow cores for Foundry purposes, in which to re-compact the core sand in that by putting on a lid Core box closed on all sides, a perforated hollow mandrel passed through the cover is provided which is covered with a bag-shaped membrane that can be inflated by means of compressed air.
Es sind bereits Maschinen zur Herstellung hohler Sandkerne bekannt, bei denen der durch Blasen in einen Kernkasten gefüllte und dabei vorverdichtete Sand durch Aufblähen einer aus dehnbarem Stoff hergestellten Membran aus dem Inneren des Kernes heraus nachverdichtet wird. Dabei ist die Membran an den beiden Enden eines in der Mitte des Kernkastens befindlichen rohrförmigen Hohldorns luft- bzw. wasserdicht befestigt. Der nach unten verschlossene, bis auf den Kernkastenboden hindurchreichende Hohldorn ist in dem von der Membran schlauchartig überzogenen Bereich mehrfach durchbrachen. Das obere Ende des bekannten Hohldornes ist an eine Druckmittelleitung angeschlossen. Die Arbeitsweise dieser Maschine geht dabei derart vonstatten, daß zuerst der Kernkasten mit eingesenktem Hohldorn mit Sand gefüllt wird, anschließend durch einen Deckel dicht verschlossen wird, um daraufhin durch Zuführen von Druckmittel die Membran aufzublähen.There are already machines for the production of hollow sand cores are known in which the by blowing in a core box filled and thereby pre-compacted sand by inflating one made of stretchable material produced membrane is subsequently compressed from the interior of the core. Here is the membrane at the two ends of a tubular hollow mandrel located in the middle of the core box or attached watertight. The one that is closed at the bottom and extends through to the bottom of the core box The hollow spike has broken through several times in the area covered by the membrane like a hose. The upper end of the known hollow mandrel is connected to a pressure medium line. the This machine works in such a way that first the core box with the sunk Hollow mandrel is filled with sand, then tightly closed by a lid then inflate the membrane by supplying pressure medium.
Nachteilig ist bei diesem Verfahren, daß sich die schlauchartige Membran im wesentlichen nur radial auszudehnen vermag, wodurch eine gleichförmige Verdichtung des Sandes auch gegen seine Bodenfläche nicht erzielt werden kann. Ein weiterer Nachteil ist darin zu sehen, daß zur Herstellung eines Kernes mehrere Arbeitsgänge notwendig sind, was mit einem relativ großen Zeitaufwand verbunden ist.The disadvantage of this method is that the hose-like membrane is essentially only radially able to expand, whereby a uniform compression of the sand also against its bottom surface cannot be achieved. Another disadvantage can be seen in the fact that for the production of a core several operations are necessary, which is associated with a relatively large amount of time.
Aufgabe der Erfindung ist es, eine Kernblasmaschine zur Herstellung von Kernen zu schaffen, mittels der gegenüber den bekannten Maschinen der Sand in dem Kernkasten nach allen Seiten gegen die Kernkastenwände gleichförmig verdichtet und darüber hinaus der Zeitaufwand zur Herstellung einer Form verringert wird. Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß an dem in bekannter Weise mit Sandausblasöffnungen versehenen, den Deckel für den Kernkasten bildenden Blaskopf der membranbespannte Hohldorn befestigt ist.The object of the invention is to create a core blowing machine for the production of cores, by means of the opposite of the known machines, the sand in the core box against all sides the core box walls are uniformly compacted and, moreover, the time required to produce a Shape is reduced. To solve this problem, the invention proposes that on the provided in a known manner with sand blow-out openings forming the cover for the core box Blow head the membrane-covered hollow mandrel is attached.
Einzelheiten und die Arbeitsweise der erfindungsgemäßen Maschine gehen aus der nachfolgenden
Beschreibung der in der Zeichnung dargestellten Ausführungsbeispiele der Erfindung hervor. Es zeigen
Kernblasmaschine zur Herstellung
von Hohlkernen für GießereizweckeDetails and the mode of operation of the machine according to the invention emerge from the following description of the exemplary embodiments of the invention shown in the drawing. It show core blowing machine to manufacture
of hollow cores for foundry purposes
Anmelder:Applicant:
Russell William Taccone,
Erie, Pa. (V. St. A.)Russell William Taccone,
Erie, Pa. (V. St. A.)
Vertreter: Dipl.-Ing. R. Müller-Börner,Representative: Dipl.-Ing. R. Müller-Börner,
Berlin 33, Podbielskiallee 68,Berlin 33, Podbielskiallee 68,
und Dipl.-Ing. H.-H. Wey, München 22,and Dipl.-Ing. H.-H. Wey, Munich 22,
PatentanwältePatent attorneys
Beanspruchte Priorität:
V. St. v. Amerika vom 30. November 1955 (Nr. 549 972)Claimed priority:
V. St. v. America November 30, 1955 (No. 549 972)
Russell William Taccone, Erie, Pa. (V. St. Α.),
ist als Erfinder genannt wordenRussell William Taccone, Erie, Pa. (V. St. Α.),
has been named as the inventor
Fig. 1 bis 3 eine erfindungsgemäße Maschine zur Herstellung von Formen in Seitenansicht und teilweise im axialen Schnitt in den drei Hauptphasen der Herstellung einer Form.1 to 3 show a machine according to the invention for the production of molds in side view and partially in axial section in the three main phases of making a mold.
Eine Säule 102 trägt eine Kernblasmaschine 103, die an ihrem unteren Ende einen Hohldorn 104 hat, der mit einer Membran 105 bespannt ist. Der Sand kann aus dem Sandbehälter durch einen als Blaskopf 108 ausgebildeten Deckel des Kernkastens 101 durch Öffnungen 109 hindurch in den ringförmigen Raum zwischen dem Kernkasten 101 und dem von der Membran 105 sackförmig umspannten Hohldorn 104 geblasen werden. Wenn dieser Raum, wie bei 111 in Fig. 1 gezeigt, mit Sand gefüllt ist, wird über einen Schlauch 113 Preßluft in den Hohldorn 104 geleitet; die Membran 105 bläht sich, wie in Fig. 2 dargestellt, auf und verdichtet den Sand. Darauf erzeugt man im Hohldorn 104, wie in Fig. 3 gezeigt, einen Unterdruck, der die Membran 105 gegen die Außenseite des Hohldornes zurückzieht, worauf die Einheit Hohldorn—Membran leicht aus dem Kernkasten herausgezogen und der fertige Kern aus dem Kernkasten entnommen werden kann.A column 102 carries a core blowing machine 103, which has a hollow mandrel 104 at its lower end, which is covered with a membrane 105 . The sand can be blown from the sand container through a cover of the core box 101 designed as a blow head 108 through openings 109 into the annular space between the core box 101 and the hollow mandrel 104 encompassed by the membrane 105 in a sack-shaped manner. When this space is filled with sand, as shown at 111 in FIG. 1, compressed air is passed into the hollow mandrel 104 via a hose 113 ; the membrane 105 inflates, as shown in FIG. 2, and compacts the sand. A vacuum is then generated in the hollow mandrel 104, as shown in FIG. 3, which pulls the membrane 105 back against the outside of the hollow mandrel, whereupon the hollow mandrel-membrane unit can be easily pulled out of the core box and the finished core can be removed from the core box.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US807038XA | 1955-11-30 | 1955-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1159134B true DE1159134B (en) | 1963-12-12 |
Family
ID=22159066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET12757A Pending DE1159134B (en) | 1955-11-30 | 1956-10-17 | Core blowing machine for the production of hollow cores for foundry purposes |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE551244A (en) |
DE (1) | DE1159134B (en) |
FR (1) | FR1161739A (en) |
GB (1) | GB807038A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3340195A1 (en) * | 1982-11-12 | 1984-05-30 | Sintokogio, Ltd., Nagoya, Aichi | HOLLOW CORE MAKING MACHINE |
DE3319303A1 (en) * | 1983-05-27 | 1984-11-29 | Sintokogio, Ltd., Nagoya, Aichi | CORE MOLDING DEVICE |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3168764A (en) * | 1958-07-09 | 1965-02-09 | Osborn Mfg Co | Foundry molding machine and method of molding |
DE1186173B (en) * | 1959-07-08 | 1965-01-28 | Ferdinand Boniver Fittingswerk | Process for the production of weld cores |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE530477A (en) * | ||||
DE168647C (en) * | ||||
DE527222C (en) * | 1928-07-12 | 1931-06-15 | I G Farbenindustrie Akt Ges | Process for the production of hollow sand cores for metal casting |
DE691582C (en) * | 1939-02-11 | 1940-05-31 | Buderus Eisenwerk | Method and device for the manufacture of linings for centrifugal casting molds |
DE829772C (en) * | 1944-03-29 | 1952-01-28 | Redford Iron & Equipment Co | Core blowing machine |
DE912854C (en) * | 1948-10-15 | 1954-06-03 | Kabel Vogel & Schemmann Ag | Core and blow molding machine |
DE918226C (en) * | 1951-12-19 | 1954-09-20 | Friedrich Walter Kirsten | Core and blow molding machine |
DE930104C (en) * | 1954-02-16 | 1955-07-11 | Fritz Hansberg | Machine for the production of foundry cores and for filling molding sand into molding boxes using compressed air |
-
0
- BE BE551244D patent/BE551244A/xx unknown
-
1956
- 1956-09-21 FR FR1161739D patent/FR1161739A/en not_active Expired
- 1956-10-17 DE DET12757A patent/DE1159134B/en active Pending
- 1956-11-26 GB GB36123/56A patent/GB807038A/en not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE530477A (en) * | ||||
DE168647C (en) * | ||||
DE527222C (en) * | 1928-07-12 | 1931-06-15 | I G Farbenindustrie Akt Ges | Process for the production of hollow sand cores for metal casting |
DE691582C (en) * | 1939-02-11 | 1940-05-31 | Buderus Eisenwerk | Method and device for the manufacture of linings for centrifugal casting molds |
DE829772C (en) * | 1944-03-29 | 1952-01-28 | Redford Iron & Equipment Co | Core blowing machine |
DE912854C (en) * | 1948-10-15 | 1954-06-03 | Kabel Vogel & Schemmann Ag | Core and blow molding machine |
DE918226C (en) * | 1951-12-19 | 1954-09-20 | Friedrich Walter Kirsten | Core and blow molding machine |
DE930104C (en) * | 1954-02-16 | 1955-07-11 | Fritz Hansberg | Machine for the production of foundry cores and for filling molding sand into molding boxes using compressed air |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3340195A1 (en) * | 1982-11-12 | 1984-05-30 | Sintokogio, Ltd., Nagoya, Aichi | HOLLOW CORE MAKING MACHINE |
DE3319303A1 (en) * | 1983-05-27 | 1984-11-29 | Sintokogio, Ltd., Nagoya, Aichi | CORE MOLDING DEVICE |
Also Published As
Publication number | Publication date |
---|---|
FR1161739A (en) | 1958-09-03 |
BE551244A (en) | |
GB807038A (en) | 1959-01-07 |
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