DE1251471B - Blow molding for the production of molded masks for foundry purposes - Google Patents
Blow molding for the production of molded masks for foundry purposesInfo
- Publication number
- DE1251471B DE1251471B DENDAT1251471D DE1251471DA DE1251471B DE 1251471 B DE1251471 B DE 1251471B DE NDAT1251471 D DENDAT1251471 D DE NDAT1251471D DE 1251471D A DE1251471D A DE 1251471DA DE 1251471 B DE1251471 B DE 1251471B
- Authority
- DE
- Germany
- Prior art keywords
- production
- blow molding
- foundry purposes
- nozzle
- molded masks
- 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
- 238000004519 manufacturing process Methods 0.000 title description 2
- 238000000071 blow moulding Methods 0.000 title 1
- 238000007664 blowing Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000005429 filling process Methods 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- B22C15/245—Blowing tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Description
1 ZOl 47 11 ZOl 47 1
Das Injektorrohr 15 führt durch die Ein- und Auslaufventile 9 und 10 hindurch und durchragt die Blasdüse 6 bis kurz vor das Düsenende 7.The injector tube 15 leads through the inlet and outlet valves 9 and 10 and protrudes through the blow nozzle 6 until just before the end of the nozzle 7.
Die Wirkungsweise der vorstehend beschriebenen Vorrichtung ist folgende: Während des Füllvorganges wird durch das Injektorrohr 15 Luft eingeführt, deren Druck auf übliche Art und Weise geregelt werden kann. Sobald diese· Luft auf den Formstoff in der Blasdüse 6 trifft, bewirkt sie eine zusätzliche Beschleunigung. Nach Beendigung des Füllvorganges wird die in der Blasdüse 6 befindliche Formmasse oberhalb des unteren Injektorrohrendes angehoben und in den noch geöffneten Mischbehälter gedrückt. Während dieser Luftzufuhr über das Injektorrohr 15 setzt der Schließvorgang über die Zuleitung 13 des Steuerzylinders 11 ein, so daß ein Zurücklaufen der Formmasse verhindert wird. Das nunmehr geöffnete Einlaßventil 9 läßt aus dem Zulauftrichter 3 neue Formmasse in den Mischbehälter eintreten.The operation of the device described above is as follows: During the filling process 15 air is introduced through the injector tube, the pressure of which is regulated in the usual manner can be. As soon as this air hits the molding material in the blow nozzle 6, it causes an additional one Acceleration. After completion of the filling process, the molding compound located in the blow nozzle 6 is raised above the lower end of the injector tube and pressed into the still open mixing container. During this air supply via the injector tube 15, the closing process continues via the supply line 13 of the control cylinder 11, so that a backflow of the molding compound is prevented. That now Open inlet valve 9 allows new molding compound to enter the mixing container from the feed funnel 3.
Die Erfindung ist nicht auf das Ausführungsbei- zo spiel beschränkt, sondern es sind zahlreiche Änderungen durchführbar, ohne daß der Rahmen der Erfindung überschritten wird. So besteht insbesondere die Möglichkeit, das in die Blasdüse 6 ragende Injektorrohr axial verschiebbar auszugestalten, so daß es regelbare verschiedene Lagen 4n der Blasdüse einnehmen kann.The invention is not limited to the embodiment limited game, but numerous changes can be made without departing from the scope of the invention is exceeded. In particular, there is the possibility of the injector pipe protruding into the blow nozzle 6 designed to be axially displaceable, so that it occupy adjustable different positions 4n of the blow nozzle can.
Patentansprüche:Patent claims:
1. Blasvorrichtung zum Herstellen von Fonnmasken und -kernen für Gießereizwecke, bestehend aus einem Mischbehälter mit zugeordnetem, auf einer pneumatisch oder hydraulisch gesteuerten Steuerstange angeordnetem Ein- und Auslaufventil und einer auswechselbaren Blasdüse, die gegen die Einblasöffnung des Modells zu führen ist und durch welche Formstoff mit Druckluft in den Modellhohlraum eingeblasen wird, dadurch gekennzeichnet, daß ein mit Druckluft beaufschlagtes Injektorrohr (15) durch die Austrittsöffnung (16) des Mischbehälters (2) in die Blasdüse (6) ragt.1. Blowing device for the production of mold masks and cores for foundry purposes, consisting from a mixing tank with assigned, on a pneumatic or hydraulic controlled control rod arranged inlet and outlet valve and an exchangeable blow nozzle, which is to be led against the blow-in opening of the model and through which molding material with Compressed air is blown into the model cavity, characterized in that a injector tube (15) charged with compressed air through the outlet opening (16) of the mixing container (2) protrudes into the nozzle (6).
2. Blasvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Injektorrohr (15) durch die Steuerstange (8) und durch die Ein- und Auslaufventile (9,10) des Mischbehälters (2) führt.2. Blowing device according to claim 1, characterized in that the injector tube (15) through the control rod (8) and through the inlet and outlet valves (9,10) of the mixing container (2).
3. Blasvorrichtung nach Ansprüchen 1 und 2, dadurch gekennzeichnet, daß das Injektorrohr (15) die Blasdüse (6) bis etwa kurz vor das Düsenende (7) durchragt.3. Blowing device according to claims 1 and 2, characterized in that the injector tube (15) the nozzle (6) protrudes until about just before the nozzle end (7).
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1251471B true DE1251471B (en) | 1967-10-05 |
Family
ID=604796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1251471D Pending DE1251471B (en) | Blow molding for the production of molded masks for foundry purposes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1251471B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4390056A (en) | 1975-06-27 | 1983-06-28 | Dansk Industri Syndikat A/S | Method and apparatus for producing one or more hollow sand cores suitable for casting moulds |
-
0
- DE DENDAT1251471D patent/DE1251471B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4390056A (en) | 1975-06-27 | 1983-06-28 | Dansk Industri Syndikat A/S | Method and apparatus for producing one or more hollow sand cores suitable for casting moulds |
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