DE4213187A1 - PRESSING DEVICE FOR SAND MOLDS - Google Patents
PRESSING DEVICE FOR SAND MOLDSInfo
- Publication number
- DE4213187A1 DE4213187A1 DE4213187A DE4213187A DE4213187A1 DE 4213187 A1 DE4213187 A1 DE 4213187A1 DE 4213187 A DE4213187 A DE 4213187A DE 4213187 A DE4213187 A DE 4213187A DE 4213187 A1 DE4213187 A1 DE 4213187A1
- Authority
- DE
- Germany
- Prior art keywords
- plate
- pressing device
- sand
- press
- sand molds
- 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.)
- Ceased
Links
- 239000004576 sand Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 6
- 229920001296 polysiloxane Polymers 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 230000002093 peripheral 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
- B22C15/02—Compacting by pressing devices only
- B22C15/08—Compacting by pressing devices only involving pneumatic or hydraulic mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Soil Working Implements (AREA)
Abstract
Description
Die Erfindung betrifft eine Preßvorrichtung für Sandformen mit weitgehend gleichem spezifischem Preßdruck.The invention relates to a pressing device for sand molds with largely the same specific pressure.
Es sind starre Preßplatten bei einfachen Formmaschinen be kannt, die jedoch meist unbefriedigende Ergebnisse erzielen, weil im Bereich hoher Modellteile eine Überverdichtung er folgt, während in den übrigen Zonen keine ausreichende Preß kraft mehr zur Verfügung steht.There are rigid press plates in simple molding machines knows, but mostly achieve unsatisfactory results, because in the area of high model parts he is over-compressed follows, while in the remaining zones insufficient press more is available.
Auch sind sog. Vielstempelpressen bekannt, die aus einer Vielzahl von nebeneinander angeordneten Hydraulik-Zylindern bestehen, die an den nach unten ausfahrenden Kolbenstangen Preßfüße aufweisen, die insgesamt die ganze Formfläche be decken.So-called multi-punch presses are also known, which consist of a Large number of hydraulic cylinders arranged side by side consist of the piston rods extending downwards Have press feet, the total be the entire molding surface cover.
Dieses Verfahren ist sehr teuer, recht verschleißanfällig, und da es sich hierbei um eine Vielzahl von starren Preßplat ten handelt, die aus konstruktiven Gründen eine gewisse Größe nicht unterschreiten können, ist auch keine gleichmäßige Ver dichtung, besonders in den Randzonen, gewährleistet.This process is very expensive, very prone to wear, and since this is a variety of rigid press platens ten, which is of a certain size for design reasons can not fall below is not a uniform Ver seal, especially in the peripheral zones, guaranteed.
Aufgabe der vorliegenden Erfindung ist es, die aufgeführten Nachteile zu beseitigen.The object of the present invention is to implement the listed Eliminate disadvantages.
Diese Aufgabe wird dadurch erreicht, daß in dem Preßhaupt eine hochelastische Platte mit einer Härte von <40 Shore A aus einem weitgehend inkompressiblen Werkstoff vorgesehen ist.This object is achieved in that in the press head a highly elastic plate with a hardness of <40 Shore A. a largely incompressible material is provided.
Anhand der Figur wird ein bevorzugtes Ausführungsbeispiel näher erläutert.Based on the figure is a preferred embodiment explained in more detail.
In Fig. 1 ist eine erfindungsgemäße Preßvorrichtung darge stellt.In Fig. 1, a pressing device according to the invention is Darge.
Oberhalb einer Modelleinrichtung 1 mit aufgesetztem Formkasten 2 und Füllrahmen 3 ist ein vertikal durch Hydraulik-Zylinder 4 bewegbares Preßhaupt 5 angeordnet.Above a model device 1 with a molded box 2 and a filling frame 3 , a press head 5 which is vertically movable by hydraulic cylinders 4 is arranged.
An dem Preßhaupt 5 ist eine dicke Platte aus hochelastischem inkompressiblen Material 6 befestigt. Bei Bedarf sind in dem Material 6 Luftkammern 10 enthalten.A thick plate of highly elastic, incompressible material 6 is attached to the press head 5 . If required, 6 air chambers 10 are contained in the material.
Wird nun der Preßkopf 5 durch den Zylinder 4 auf den Formsand 7 gedrückt, paßt sich die elastische Platte 6 der unter schiedlichen Verdichtbarkeit des Sandes, hervorgerufen durch die unterschiedliche Kontur des Modells 1 soweit an, als auf jedem Quadratzentimeter der Sandfläche, abzüglich der Randleiste 9, ein an nähernd gleicher spezifischer Preßdruck entsteht.If the press head 5 is pressed by the cylinder 4 onto the molding sand 7 , the elastic plate 6 fits under the different compressibility of the sand, caused by the different contour of the model 1 as far as on every square centimeter of the sand surface, minus the edge strip 9 , arises at approximately the same specific pressure.
Da die Platte 6 aus weitgehend inkompessiblen Material (z. B. Gummi, Silikon usw.) besteht, wird sie im Bereich hoher Mo dellanteile "eingebeult" und an flachen Modellbereichen "aus gebeult".Since the plate 6 consists of largely incompatible material (e.g. rubber, silicone, etc.), it is "dented" in the area of high model proportions and "dented" on flat model areas.
In manchen Fällen, insbesondere zur Verdichtung extrem hoher Modelle, sind im Bereiche dieser Modelle in der elastischen Platte einige Luftkammern enthalten, die eine örtliche Kompressibelität gewährleisten.In some cases, especially for extremely high compression Models are in the range of these models in the elastic Plate contain some air chambers that are local Ensure compressibility.
In einer weiteren üblichen Ausführungsform wird nicht die Preßplatte S durch einen Zylinder 4 auf den Sand 7 gedrückt, sondern Formkasten 2, Modelleinrichtung 1, Füllrahmen 3 und Sand 7 werden durch untenliegende Preßzylinder gegen eine oberhalb ortsfest angeordnete Preßplatte gedrückt.In a further customary embodiment, the press plate S is not pressed onto the sand 7 by a cylinder 4 , but the molding box 2 , model device 1 , filling frame 3 and sand 7 are pressed by a press cylinder located below against a press plate arranged above it.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1638/91A CH684683A5 (en) | 1991-06-03 | 1991-06-03 | Press main for a pressing device for sand molds. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4213187A1 true DE4213187A1 (en) | 1992-12-10 |
Family
ID=4215144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4213187A Ceased DE4213187A1 (en) | 1991-06-03 | 1992-04-22 | PRESSING DEVICE FOR SAND MOLDS |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPH06246392A (en) |
| CN (1) | CN1067396A (en) |
| CH (1) | CH684683A5 (en) |
| DE (1) | DE4213187A1 (en) |
| ES (1) | ES2063639B1 (en) |
| FR (1) | FR2676945A1 (en) |
| GB (1) | GB2256386B (en) |
| IT (1) | IT1255459B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050547C (en) * | 1994-03-24 | 2000-03-22 | 金属机械股份有限公司 | Method and apparatus for making sand mold |
| CN101204731B (en) * | 2006-12-18 | 2010-10-13 | 天水星火机床有限责任公司 | Meltpit latch type gas box device for investment moulding |
| CN102773411B (en) * | 2012-08-20 | 2016-01-20 | 机械科学研究总院先进制造技术研究中心 | A kind of digitlization non-model sand mold extrusion forming method |
| CN102773420B (en) * | 2012-08-20 | 2016-01-20 | 机械科学研究总院先进制造技术研究中心 | A kind of assembling die formative method of sand mold |
| CN102794392B (en) * | 2012-08-20 | 2015-12-02 | 机械科学研究总院先进制造技术研究中心 | A kind of moulding mould based on fractal structure and formative method thereof |
| CN109848376A (en) * | 2019-03-19 | 2019-06-07 | 芜湖诚拓汽车部件股份有限公司 | Auto parts and components casting model powder mould molding equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE516911C (en) * | 1929-10-29 | 1931-01-28 | Walter Killmer | Elastic pressing device for molding machines |
| DE801574C (en) * | 1949-04-17 | 1951-01-11 | Johannes Wisser | Method and device for evenly compacting the sand in compression molding machines |
| DE883799C (en) * | 1951-07-06 | 1953-07-20 | Werner Dipl-Ing Schlegel | Method and device for compacting the molding sand in molding machines |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH382923A (en) * | 1961-01-03 | 1964-10-15 | William Taccone Russell | Process for compacting a granular material and machine for its implementation |
| BE634361A (en) * | 1962-07-02 | |||
| JPS50117544A (en) * | 1974-02-27 | 1975-09-13 | ||
| SU662240A2 (en) * | 1976-12-03 | 1979-05-15 | Всесоюзный Научно-Исследовательский Институт Литейного Машиностроения,Литейной Технологии И Автоматизации Литейного Производства | Press block |
| JPS55117544A (en) * | 1979-02-28 | 1980-09-09 | Toyota Motor Corp | Shaping machine for mold |
| SU1060298A1 (en) * | 1982-07-28 | 1983-12-15 | Minchenkov Aleksandr V | Apparatus for packing moulding sand |
-
1991
- 1991-06-03 CH CH1638/91A patent/CH684683A5/en not_active IP Right Cessation
-
1992
- 1992-04-22 DE DE4213187A patent/DE4213187A1/en not_active Ceased
- 1992-05-08 ES ES09200958A patent/ES2063639B1/en not_active Expired - Lifetime
- 1992-05-19 FR FR9206048A patent/FR2676945A1/en not_active Withdrawn
- 1992-05-20 IT ITMI921212A patent/IT1255459B/en active IP Right Grant
- 1992-05-29 GB GB9211464A patent/GB2256386B/en not_active Expired - Fee Related
- 1992-06-02 JP JP4141567A patent/JPH06246392A/en active Pending
- 1992-06-03 CN CN92104264.7A patent/CN1067396A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE516911C (en) * | 1929-10-29 | 1931-01-28 | Walter Killmer | Elastic pressing device for molding machines |
| DE801574C (en) * | 1949-04-17 | 1951-01-11 | Johannes Wisser | Method and device for evenly compacting the sand in compression molding machines |
| DE883799C (en) * | 1951-07-06 | 1953-07-20 | Werner Dipl-Ing Schlegel | Method and device for compacting the molding sand in molding machines |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1255459B (en) | 1995-11-02 |
| ITMI921212A1 (en) | 1993-11-20 |
| GB2256386A (en) | 1992-12-09 |
| GB9211464D0 (en) | 1992-07-15 |
| JPH06246392A (en) | 1994-09-06 |
| ES2063639B1 (en) | 1997-04-16 |
| FR2676945A1 (en) | 1992-12-04 |
| ES2063639A2 (en) | 1995-01-01 |
| GB2256386B (en) | 1995-01-11 |
| ES2063639R (en) | 1996-08-16 |
| ITMI921212A0 (en) | 1992-05-20 |
| CH684683A5 (en) | 1994-11-30 |
| CN1067396A (en) | 1992-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |