DE831135C - Nozzle plate for core and blow molding machines - Google Patents
Nozzle plate for core and blow molding machinesInfo
- Publication number
- DE831135C DE831135C DEM7563A DEM0007563A DE831135C DE 831135 C DE831135 C DE 831135C DE M7563 A DEM7563 A DE M7563A DE M0007563 A DEM0007563 A DE M0007563A DE 831135 C DE831135 C DE 831135C
- Authority
- DE
- Germany
- Prior art keywords
- nozzle plate
- nozzle
- core
- blow molding
- molding machines
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—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
Die Düsenplatten von Kern- und Formblasmaschinen werden üblicherweise mit einem oder mehreren zylindrischen Löchern versehen, durch die der Sand aus dem Sandbehälter in die Form geblasen wird. Der Blasvorgang und die geblasene Form zeigen dabei jedoch häufig verschiedene Mängel. Insbesondere gelingt es meist nicht, unter Schonung der Modellplatte eine gleichmäßige Sandverteilung innerhalb des Formkastens und eine gleichmäßige Festigkeit der Form zu sichern. Wurde eine Düsenplatte mit einer zylindrischen Blasöffnung verwendet, so wurde der Kern- oder Formkasten häufig nicht restlos gefüllt, und bei Anordnung mehrerer Blasöffnungen traten Sandverschiebungen ein. Außerdem war in beiden Fällen der Aufprall des Sandes auf die Modellplatte derart hart, daß ein Festschweißen der Form am Modell eintrat und die Form beim nachfolgenden Abheben am Modell kleben blieb, wodurch Beschädigungen der Form eintraten.The nozzle plates of core and blow molding machines are commonly used provided with one or more cylindrical holes through which the sand from the Sand container is blown into the mold. Show the blowing process and the blown shape however, there are often various shortcomings. In particular, it usually does not succeed under Gentle on the model plate, an even distribution of sand within the molding box and ensure uniform strength of the mold. Was using a nozzle plate a cylindrical blow orifice is used, the core or flask has become common not completely filled, and sand displacements occurred when several blow openings were arranged a. In addition, in both cases there was the impact of the sand on the model plate so hard that the form was welded to the model and the form at subsequent lifting stuck to the model, causing damage to the mold.
Die Erfindung hilft diesen Mängeln ab, sichert eine gleichmäßige Sandverteilung auf den ganzen Form- oder Kernkasten und verhindert außerdem einen übermäßig scharfen Aufprall des Sandes auf die Modellplatte, so daß die Gefahr eines Festschweißens der Form an der Modellplatte und einer Beschädigung derselben behoben ist.The invention remedies these deficiencies and ensures an even distribution of sand on the whole mold or core box and also prevents an excessively sharp Impact of the sand on the model plate, so that there is a risk of welding the shape on the model plate and damage to the same has been repaired.
Erfindungsgemäß wird dies dadurch erreicht, daß die Blasdüse mit einem den Luft- und Sandstrom aufteilenden bzw. ablenkenden Prallkörper versehen ist. Dieser Prallkörper kann aus einem an der Düsenunterseite angebrachten Drahtkreuz, Blechstück, Kegel o. dgl. bestehen.According to the invention this is achieved in that the nozzle with a the air and sand flow dividing or deflecting impact body is provided. This impact body can be made from a wire cross attached to the underside of the nozzle, Sheet metal piece, cone or the like. Consist.
Zweckmäßig ist die Blas.düse nach strömungstechnischen Gesichtspunkten ausgebildet. Sie hat zu diesem Zweck vorteilhafterweise etwa die Form eines Drehkörpers mit parabelähnlicher Erzeugenden. Die Düsenplatte kann mit mehreren Düsen versehen sein, doch besteht ein weiterer Vorteil der Erfindung darin, daß selbst größere Formen oder Kerne mit einer einzigen mittleren Düse geblasen werden können, trotzdem aber eine gleichmäßige Sandverteilung und eine vollständige Füllung des Form- oder Kernkastens gesichert ist.The blowing nozzle is expedient from a fluidic point of view educated. For this purpose, it advantageously has approximately the shape of a rotating body with parabola-like generators. The nozzle plate can be provided with several nozzles be, but another advantage of the invention is that even larger Molds or cores can be blown with a single center nozzle, anyway but an even distribution of sand and a complete filling of the mold or Core box is secured.
Gemäß Abb. i ist die BI asdüse, welche die Form eines Drehkörpers mit parabelähnlicher Erzeugenden 'hat, an ihrer Unterseite mit einem den Sandstrom verteilenden Prallkörper t in Form eines Drahtkreuzes versehen.According to Fig. I is the BI as nozzle, which has the shape of a rotating body with a parabola-like generator 'has, on its underside with a stream of sand distributing impact body t provided in the form of a wire cross.
Bei der Ausführungsform gemäß Abb. 2 besteht dieser Prallkörper aus einem Prallblech 2 und bei der Ausführung nach Abb. 3 aus einem Prallkörper 3.In the embodiment according to Fig. 2, this impact body consists of a baffle plate 2 and, in the embodiment according to Fig. 3, a baffle body 3.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM7563A DE831135C (en) | 1950-11-19 | 1950-11-19 | Nozzle plate for core and blow molding machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM7563A DE831135C (en) | 1950-11-19 | 1950-11-19 | Nozzle plate for core and blow molding machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE831135C true DE831135C (en) | 1952-02-11 |
Family
ID=7293796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEM7563A Expired DE831135C (en) | 1950-11-19 | 1950-11-19 | Nozzle plate for core and blow molding machines |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE831135C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2902555A1 (en) * | 1979-01-24 | 1980-07-31 | Zimmermann Maschf Gustav | Moulding sand shooting plate - has extra movable grating for better precompression |
-
1950
- 1950-11-19 DE DEM7563A patent/DE831135C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2902555A1 (en) * | 1979-01-24 | 1980-07-31 | Zimmermann Maschf Gustav | Moulding sand shooting plate - has extra movable grating for better precompression |
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