EP1106281A1 - Kernschiessverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung - Google Patents
Kernschiessverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung Download PDFInfo
- Publication number
- EP1106281A1 EP1106281A1 EP00126613A EP00126613A EP1106281A1 EP 1106281 A1 EP1106281 A1 EP 1106281A1 EP 00126613 A EP00126613 A EP 00126613A EP 00126613 A EP00126613 A EP 00126613A EP 1106281 A1 EP1106281 A1 EP 1106281A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- core box
- molding material
- shooting
- shooting method
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 34
- 238000007664 blowing Methods 0.000 title 1
- 239000012778 molding material Substances 0.000 claims abstract description 30
- 230000003111 delayed effect Effects 0.000 claims abstract description 19
- 238000000465 moulding Methods 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 230000002040 relaxant effect Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/08—Moulds provided with means for tilting or inverting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C13/00—Moulding machines for making moulds or cores of particular shapes
- B22C13/12—Moulding machines for making moulds or cores of particular shapes for cores
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/006—Pressing by atmospheric pressure, as a result of vacuum generation or by gas or liquid pressure acting directly upon the material, e.g. jets of compressed air
Definitions
- the invention relates to a core shooting method for the production of molded parts from delayed curing molding materials according to the preamble of the claim 1 and a device suitable for carrying out the method.
- Delayed curing molding materials such as concrete
- Methods produced by the extrusion process Disadvantageous this method is that protruding, or recessed Contours of the molding to be manufactured only due to the process can be trained in the production direction. However, this leads to a very limited design freedom in the design of the to be manufactured Molded body.
- the patent DE 29 53 668 shows a blow molding machine in which a Core box is attached to a table, its drive for turning is used relative to the horizontal axis.
- the object is achieved in that a core shooting method is applied to delayed curing molding materials.
- molded articles to create from delayed curing molding materials that their geometric design and shape a greater freedom of design enable.
- molded articles delayed curing molding materials to create the protruding, or recessed contours freely in all axes and Can have levels or directions.
- the core shooting device shown in Figure 1 comprises a shooting device 1, under which a molding device 2 is positioned, which one Core box.
- the shaping device 2 is over an axis of rotation 3 pivotally attached.
- the invention is to be illustrated using the example of the production of a shaped concrete body, in particular a roof tile.
- the molding material base concrete is placed in a storage container filled on the core shooter.
- the molding material falls into the sand cylinder of the core shooter.
- the shooting head which is a transition between the sand cylinder and the rough outer contour of the core box forms.
- the shooting head plate is attached under the shooting head Openings coincide with the bullet holes of the core box.
- the core box with the main division level is for shooting in the vertical direction under the shooting head.
- the shooting head is now with brought into contact with the core box. This is done either by lifting the core box to the shooting head or by lowering the Shooting head on the core box.
- the one used for the delayed curing molding compound Pressure is preferably at least 7 bar. Is particularly preferred an outlet pressure of 8.5 to 10 bar. However, higher pressures can also be used be used.
- the occurring air mass flow fluidizes the flowing concrete and forms a two-phase flow from compressed air and concrete.
- the outlet pressure is particularly expedient for the process and the associated short filling time.
- the high kinetic energy, with which the molding material is entered into the core box ensures sufficient Compression of the fitting.
- the high shooting pressures of preferably more than 7 bar ensure overcoming the delayed curing molding materials, such as concrete, existing higher binding forces, that of the contour sharpness of the fitting and the necessary Prevent compression of the molding material in the core box.
- the high This results in binding forces between the individual molding material particles the high humidity of the delayed curing molding materials, such as concrete.
- the flowability of concrete mixes much less than the flowability of the foundry molding materials processed according to the state of the art with the core shooting method become.
- the longest Expansion of the molding to be manufactured in the preferred embodiment of the invention lie in the direction of the inflowing molding material should. This results in the vertical shooting position, which ensures that the molding material with the least possible number of directional changes into the most distant form areas can reach.
- the main division level does not necessarily have to be aligned vertically anyway, it is particularly practical with regard to the following Manufacturing steps.
- the longest dimension not necessarily aligned in the vertical to the shooting direction and the main division plane should not be vertical. In such a case it already has the result is a high outlet pressure of preferably more than 7 bar, that the delayed curing molding compound can be processed.
- At Moldings with a complicated geometry have the vertical orientation the longest extent of the core box and the main division level of the core box, however, the advantages mentioned above. Die the molding material Air is transported through nozzles and over a defined column dissipated.
- the surface of the part to be manufactured is in the area of the entry opening Fitting usually uneven.
- the area is in a leveling station the entry opening by pressing in a correspondingly shaped one Contour part smoothed in the form of a contoured stamp and densified.
- To absorb the internal forces in the core box in the Shooting and leveling station can the core box parts by hydraulic-mechanical operated clamping devices kept tightly closed become. After removing the contour part from the entry area the core box is moved to the removal station.
- the core shooter has means that the Core box for removing the molded part essentially by 90 ° tilts.
- the core box is tilted before the molded body is removed significant with regard to the hardening behavior of the material to be removed Shaped body made of delayed curing molding compounds.
- the usual Molded materials processed with core shooting processes can be exposed to heat and / or flow through with a process gas within seconds or cured a maximum of a few minutes before going to the core box be removed. This causes the cores to separate, i.e. H. when opening the core box and when removing it from the core box, easy to use.
- the molding compound hardens within hours and the Green stability, i.e. the strength before a chemical or physical Hardening, does not allow direct handling.
- a carrier is inserted into the core box as support.
- the Dachstein in the preferred embodiment of the invention Vertical procedure.
- the still closed core box is now tilted and essentially brought into the horizontal position so that the flat area the roof tile is supported on the entire surface by the beam and, lying on this, can be removed.
- a removal device like a robot or carrier, the fitting carrier with the one on top Can take fitting. This has the consequence that the still Uncured concrete does not fall off the beam when the Dachstein is removed from the core box.
- a new shaped part carrier is transferred from the release agent into the core box inserted.
- the core box is closed and in front of respectively tilted back to the vertical during the process to the shooting station.
- the core box in its Interior further shaping components for the shaping of Have cavities in the molded body.
- the process steps can be carried out in parallel to increase productivity be carried out in the various machine stations.
- the core boxes can be transported via a rotary indexing table, the one transport between the shooting station, a leveling station and a sampling station.
- the shooting, leveling and removal can be done on the same position.
- Those to carry out these procedural steps necessary device components are included introduced this working position.
- the procedure after However, the rotary cycle or transfer principle is the preferred one.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
- Fig.1:
- eine Ansicht einer Kernschießvorrichtung mit schwenkbarer Formeinrichtung.
- Fig.2:
- einen Verriegelungsmechanismus
- Fig.3:
- einen Querschnitt der in Figur 1 und 2 dargestellten Vorrichtung.
Claims (17)
- Kernschießverfahren, bei dem ein Formstoff in einen Kernkasten eingeschossen und anschließend aus ihm entnommen wird,
dadurch gekennzeichnet,
dass der Formstoff ein verzögert aushärtender Stoff ist. - Kernschießverfahren nach Anspruch 1,
dadurch gekennzeichnet,
dass der Kernkasten zum Einschießen des Formstoffes im Wesentlichen in einer Vertikalen bezüglich der Längsausrichtung des zu formenden Körpers positioniert wird und zur Entnahme im Wesentlichen in eine Horizontale geschwenkt wird. - Kernschießverfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass der Kernkasten zum Einschießen des Formstoffes bezogen auf die Hauptteilungsebene im Wesentlichen in einer Vertikalen positioniert wird. - Kernschießverfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
dass der Formstoff nach dem Einschießen nivelliert wird, wobei sich der Kernkasten - bezogen auf seine Hauptteilungsebene - im Wesentlichen in vertikaler Stellung befindet. - Kemschießverfahren nach Anspruch 4,
dadurch gekennzeichnet,
dass die Nivellierung durch Aufpressen eines Konturenteils erfolgt. - Kernschießverfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
dass der verzögert aushärtende Formstoff auf einen sich im Kernkasten befindenden Formstückträger aufgeschossen wird. - Kernschießverfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
dass der verzögert aushärtende Formstoff mittels Druckluft in den Kernkasten eingeschossen wird, indem ein Druckluftreservoir über eine Schießeinheit in Richtung des Kernkastens entspannt wird. - Kernschießverfahren nach Anspruch 7,
dadurch gekennzeichnet,
dass die Druckluft einen Ausgangsdruck von mindestens 7 bar aufweist. - Kernschießverfahren nach Anspruch 8,
dadurch gekennzeichnet,
dass die Druckluft einen Ausgangsdruck in einem Bereich von 8,5 bis 10 bar aufweist. - Kemschießverfahren nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
dass das Formteil entnommen wird, indem das Oberteil des Kernkastens abgehoben wird und eine Ausstoßvorrichtung den Formstückträger, welcher das Formstück trägt, durch das Kernkastenunterteil so weit angehoben wird, dass der Formstückträger mit dem daraufliegenden Formstück entnommen werden kann. - Kernschießverfahren nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet,
dass das Einschießen des verzögert härtenden Formstoffes, das Nivellieren und die Entnahme des Formstückes aus dem Kernkasten an verschiedenen Maschinenstationen erfolgt. - Kernschießverfahren nach Anspruch 11,
dadurch gekennzeichnet,
dass der Kernkasten zur Durchführung der verschiedenen Verfahrensschritte über einen Rundschalttisch transportiert wird. - Kernschießvorrichtung umfassend eine Schießvorrichtung und eine Entnahmestation,
dadurch gekennzeichnet,
dass die Schießvorrichtung Mittel zum schlagartigen Entspannen eines Druckluftresevoirs aufweist und dass die Kernschießvorrichtung Mittel zum Wenden eines Kernkastens aufweist. - Kernschießvorrichtung nach Anspruch 13,
dadurch gekennzeichnet,
dass die Mittel zum schlagartigen Entspannen eines Druckluftresevoirs einen Ausgangsdruck von mindestens 7 bar erzeugen. - Kernschießvorrichtung nach Anspruch 14,
dadurch gekennzeichnet,
dass die Mittel zum schlagartigen Entspannen eines Druckluftresevoirs einen Ausgangsdruck von 8,5 bis 10 bar erzeugen. - Kernschießvorrichtung nach einem der Ansprüche 13 bis 15,
dadurch gekennzeichnet,
dass sie mit einem Sandzylinder ausgestattet ist. - Kernschießvorrichtung nach einem der Ansprüche 13 bis 16,
dadurch gekennzeichnet,
dass sie vorzugsweise nach dem Rundtakt- oder Transferprinzip arbeitet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19959234 | 1999-12-08 | ||
| DE19959234A DE19959234C2 (de) | 1999-12-08 | 1999-12-08 | Kernschießverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1106281A1 true EP1106281A1 (de) | 2001-06-13 |
| EP1106281B1 EP1106281B1 (de) | 2005-03-30 |
Family
ID=7931896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00126613A Expired - Lifetime EP1106281B1 (de) | 1999-12-08 | 2000-12-04 | Kernschiessverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1106281B1 (de) |
| AT (1) | ATE291977T1 (de) |
| DE (2) | DE19959234C2 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034085A3 (de) * | 2007-09-11 | 2009-06-18 | Monier Technical Ct Gmbh | Verfahren für die herstellung von dachsteinen sowie eine einrichtung für die herstellung dieser dachsteine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013216674B4 (de) | 2013-08-22 | 2022-10-13 | Bayerische Motoren Werke Aktiengesellschaft | Selbstschließende Gummidichtkappen für Einschussdüsen bei der Herstellung von Sandkernen in der Gießerei |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2908210A1 (de) * | 1978-04-05 | 1979-10-11 | Gisag Veb | Formmaschine, insbesondere kernformmaschine |
| DE2953668C1 (de) * | 1979-05-18 | 1983-12-15 | Vsesojuznyj naučno-issledovatel'skij institut litejnogo mašinostroenija, litejnoj technologii i avtomatizacii litejnogo proizvodstva, Moskva | Blasmaschine |
| DE4020933A1 (de) * | 1990-06-06 | 1991-12-12 | Rheinische Maschinenfabrik & E | Vorrichtung zum befuellen eines form- oder kernkastens bei giessereimaschinen |
| US5630305A (en) * | 1991-08-26 | 1997-05-20 | Hlasnicek; Richard S. | Surface covering unit methods of use and manufacture |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890348A (ja) * | 1981-11-24 | 1983-05-30 | Sintokogio Ltd | ガス硬化鋳型造型機 |
| DE3339941A1 (de) * | 1983-11-04 | 1985-05-15 | Forma-Bühler GmbH Automatische Formanlagen, 8900 Augsburg | Verfahren und vorrichtung zur herstellung von aus zwei formhaelften bestehenden kastenlosen giessformen |
| DE4434798A1 (de) * | 1993-10-14 | 1995-05-11 | Georg Fischer Giesereianlagen | Kern- und Maskenschiessmaschine |
-
1999
- 1999-12-08 DE DE19959234A patent/DE19959234C2/de not_active Expired - Lifetime
-
2000
- 2000-12-04 AT AT00126613T patent/ATE291977T1/de not_active IP Right Cessation
- 2000-12-04 EP EP00126613A patent/EP1106281B1/de not_active Expired - Lifetime
- 2000-12-04 DE DE50009913T patent/DE50009913D1/de not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2908210A1 (de) * | 1978-04-05 | 1979-10-11 | Gisag Veb | Formmaschine, insbesondere kernformmaschine |
| DE2953668C1 (de) * | 1979-05-18 | 1983-12-15 | Vsesojuznyj naučno-issledovatel'skij institut litejnogo mašinostroenija, litejnoj technologii i avtomatizacii litejnogo proizvodstva, Moskva | Blasmaschine |
| DE4020933A1 (de) * | 1990-06-06 | 1991-12-12 | Rheinische Maschinenfabrik & E | Vorrichtung zum befuellen eines form- oder kernkastens bei giessereimaschinen |
| US5630305A (en) * | 1991-08-26 | 1997-05-20 | Hlasnicek; Richard S. | Surface covering unit methods of use and manufacture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034085A3 (de) * | 2007-09-11 | 2009-06-18 | Monier Technical Ct Gmbh | Verfahren für die herstellung von dachsteinen sowie eine einrichtung für die herstellung dieser dachsteine |
| RU2462354C2 (ru) * | 2007-09-11 | 2012-09-27 | Монир Текникал Сентр Гмбх | Способ и устройство для изготовления черепицы |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19959234A1 (de) | 2001-06-21 |
| DE19959234C2 (de) | 2001-10-18 |
| EP1106281B1 (de) | 2005-03-30 |
| DE50009913D1 (de) | 2005-05-04 |
| ATE291977T1 (de) | 2005-04-15 |
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