EP0878252B1 - Giessform für automatisch arbeitende Formanlagen sowie Verfahren zur Herstellung der Giessformen - Google Patents
Giessform für automatisch arbeitende Formanlagen sowie Verfahren zur Herstellung der Giessformen Download PDFInfo
- Publication number
- EP0878252B1 EP0878252B1 EP98103795A EP98103795A EP0878252B1 EP 0878252 B1 EP0878252 B1 EP 0878252B1 EP 98103795 A EP98103795 A EP 98103795A EP 98103795 A EP98103795 A EP 98103795A EP 0878252 B1 EP0878252 B1 EP 0878252B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mould
- casting
- box
- mold
- moulding
- 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 - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
Definitions
- the invention relates to a casting mold and a method for Production of a casting mold consisting of one of two mold box halves formed box, the means of transportation has on automatic molding machines and a bound Sand mold picks up, which with cores and with a pouring funnel and a feeder is provided.
- Casting molds with bound molding sands are either made with molding boxes manufactured, which consist of two mold box halves, this molding box is usually frame-shaped is and provided on two of its end faces with running strips with which he is on an automatic roller conveyor Molding machine is transportable.
- This molding box gives the in this bound sand mold has the required strength, so that they can be transported easily can.
- the sand for the mold can be clay-bound, what an inexpensive reprocessing of the molding sand is guaranteed.
- boxless molds are known, which are dependent of the casting from a variety of items these molds are no longer clay-bound, but are chemically bound to be sufficient Strength for their handling and pourability to obtain.
- These chemically bound sand forms require elaborate machines for producing the partial molds, the Cores as well as machines that turn these parts into one Put the mold together. Aside from the high apparatus There is another effort that must be made here Disadvantage in that the sand can only be reprocessed with great effort is. In addition to the expensive molding and assembly device represents a high cost factor.
- boxless forms of green sand which consist of individual identical cuboid blocks are constructed, the part on two opposite sides of the mold cavity.
- pouring spout as well as molded in the feeder.
- These blocks will be then pushed against each other with their mold cavities, so that they complement and support each other.
- the molding sand is shot from above, which means that they are in the shadow of the model Form areas do not get the same hardening as the remaining areas.
- the feeder can also only be limited in form and also essentially only to the side of the actual mold cavity, which severely limits the quality of the feeder. By injecting the molding sand is also a great wear on models received what the procedure makes expensive.
- Molding sand in molding boxes can not only be clay-bound but is also much cheaper in its manufacture.
- the molding box only needs one half of the molding box placed separately on a model plate, then the molding box is filled with sand. After mechanical The mold half is finished compacting the molding sand. This then lies horizontally with the mold cavity turned upwards so that cores are inserted can.
- the mold boxes are placed one above the other for casting, previously in the then upper mold box Mold opening and the feeder incorporated into the molding sand must become. This happens before turning the top one Molding box with rotating tools.
- These mold boxes are then poured horizontally, which is disadvantageous here that for the feeder in the mold only a relatively small one Volume remains and also the supply of the ones below Mold parts are not always optimal.
- the pouring funnel can be produced relatively easily, but prepares the training of the feeder problems, especially since the feeder Reduced cross section, which is used to shoot the sand Available. Such are for the casting of aluminum Casting molds less suitable, especially since large, effective ones Feeders are needed.
- DE-A-26 52 657 relates to a foundry molding device a molding box, which is cast in a standing position is pivoted, wherein the mold division plane is perpendicular. In the mold parting level there is a pouring funnel and a ventilation opening arranged.
- WO 91/12104 describes one Molding box, which is also intended for a standing cast is, the pouring funnel in the parting plane of lies both mold box calves.
- JP-A-55 105 656 is well as from JP-A-55 106 658 a molding box known, which is poured in the lying state, whereby in the mold division level of the upper and lower box cores are inserted. These cores penetrate the mold cavity and are supported in the edge areas.
- the core ventilation is essential Problem that has not yet been solved satisfactorily is.
- the invention has for its object to provide a mold a molding box which has a shape of bound molding sand, to be trained in such a way that they work automatically Molding machines can be used and horizontally in the usual way can be manufactured in which the post-processing of Pouring funnel and the feeder as well as additional ones the feeder to be placed on the mold can be dispensed with and which also has effective ventilation Cores is guaranteed.
- Another object of the invention is a method for the production of such Propose mold.
- the molding box points in the area of its division level a like at least part of the length Recess extending one side of the molding box on, in the area of the recess the pouring funnel and the feeder opens.
- the feeder is in within the sand mold the mold.
- the cores are designed in this way and arranged to penetrate the feeder and above the sand form.
- the mold boxes for casting molds with bound molding sands can So manufactured in a conventional manner, d. H. the frame of the molding box is placed on a model plate, filled with sand and compacted.
- the two mold box halves are manufactured in the same way.
- the difference to conventional mold boxes is that the feeder and the pouring funnel are no longer on the open Side of the mold frame is formed on the top Mold box half, but that the opening in front of the pouring funnel like the feeder in the parting plane of the two mold box halves is misplaced. This means that the casting of the mold no longer like with conventional molds Molded boxes are the case lying horizontally, but standing he follows.
- the feeder and the pouring funnel can cast the mold box with no additional effort during production the mold can be molded, so that any post-processing here not applicable.
- the mold is standing is poured off, usually remains above the casting a room large enough to hold the required volume to accommodate the feeder. This relatively large distance also makes it possible to design the feeder so that the required hydrostatic pressure for the feed is obtained.
- the cores extend with one end upwards and advantageously through the feeder through the opening in the mold frame over the sand of the mold up to the level the pouring opening of the feeder, so that the core ventilation immediately over the pulled out ends of the core can be done.
- the molding box has in the division level, in which the feeder and the pouring funnel are arranged is a recess which in cross section V- or Can be U-shaped. This is advantageous Pouring the casting material in increasing casting, the Pouring channel opens below the casting and over the gate connected to it.
- a molded box is manufactured horizontally, i.e. H. the two halves of the molding box are made in the usual way produced, in contrast to the prior art Pouring funnel and the feeder right in the side of the opening of the molding box is also molded. Through this side The feeder as well as the pouring funnel can be arranged be produced in such a way that post-processing is no longer required.
- the molding boxes are then opened arranged on a roller conveyor and in such a way that the mold cavity points upwards. In this situation the Cores inserted, then one half of the mold over the other is laid in a known manner. In connection the finished casting mold is then turned through 90 °, see above that this now with the pouring opening up on a another now generally narrower roller conveyor is transported further.
- the molding box on the roller conveyor can remain.
- the two halves of the molding box will be then separated in a known manner, turned and the Molding process of the mold begins anew.
- FIG. 1 to 4 is an embodiment of an inventive Casting mold 1 shown.
- the mold is there from two mold halves, each mold half having one Form frame 4, which on one side in the Molding plane has a V-shaped recess 5.
- This V-shaped recess extends, in particular, from Fig. 4 can be seen over part of the width and Length of each mold box half 4.
- the pouring funnel 6 is with connected to a pouring spout 10, which extends to below the Pouring cavity 11 extends and via gates 12 with the Pouring cavity 11 is connected.
- two cores are in the casting cavity 13 inserted, which are provided with an extended end 14 are, which reaches through the feeder 9 and above of the feeder and the sand mold 8 ends. Because of this End 14, that above the food level and the sand mold ends up being an effective core vent as well Venting of the mold guaranteed.
- the recess 5 in the two mold halves 1 and 2 is when they are assembled, V-shaped in cross section educated. It is also conceivable to have a U-shaped one here Provide cutout.
- Each mold box half 4 is provided with running strips 15, with which the molding box on z.
- For the Each half of the molding box is laid on the core Roller conveyor transported and that with the opening of the casting cavity 11 up. This makes it easy to insert of the cores possible without this, as is the case with the moldless molds is the case with special Funds must be kept.
- These cores are in the half of the mold box inserted below while the other Mold box half on the lower horizontal only needs to be hung up. Following this the molding box is turned about its longitudinal axis by 90 °, so that the pouring funnel and the feeder are on top. The cast can then be done.
- the molding box can also be shaped upright, the molding box not being removed from the roller conveyor needs to be. Only the molding sand is needed here including the manufactured casting laterally to be pushed out of the mold frame 4.
- the embodiment 5 to 8 corresponds to the embodiment 1 to 4 with the difference that the feeder 9 is not, as in the embodiment 1 to 4, arranged within the sand mold 8 is and is only accessible via an opening 7, but that here the opening corresponds to the cross section of the feeder. Otherwise the arrangement of the cores is identical, here also the ends 14 of the cores 13 above the level of the maximum Level of the feeder 9 ends.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Mold Materials And Core Materials (AREA)
Description
- Fig. 1
- einen Schnitt in der Teilungsebene eines Formkastens,
- Fig. 2
- zwei zu einer Gießform zusammengefügte Formkastenhälften gemäß Schnitt nach Linie 2-2 in Fig. 1,
- Fig. 3
- einen Schnitt nach Linie 3-3 in Fig. 1,
- Fig. 4
- eine Draufsicht auf einen Formkasten gemäß Fig. 1,
- Fig. 5
- einen Schnitt gemäß Fig. 1, jedoch mit einem Speiser, der bis zur Oberfläche der Gießform reicht,
- Fig. 6
- einen Schnitt nach Linie 6-6 in Fig. 5,
- Fig. 7
- einen Schnitt nach Linie 7-7 in Fig. 5 und
- Fig. 8
- eine Draufsicht auf Fig. 5.
Claims (6)
- Gießform (1) bestehend aus einem aus zwei Formkastenhälften (4) gebildeten Formkasten, der Mittel (15) für den Transport auf automatischen Formanlagen aufweist und eine gebundene Sandform (8) aufnimmt, welche mit Kernen (13) und mit einem Eingießtrichter (6) sowie einem Speiser (9) versehen ist,
dadurch gekennzeichnet, daß
der Formkasten (4) im Bereich seiner Teilungsebene eine sich über zumindest einen Teil der Länge wie Breite einer Seite des Formkastens (4) erstreckende Ausnehmung (5) aufweist, daß im Bereich der Ausnehmung der Eingießtrichter (6) sowie der Speiser (9) mündet, daß der Speiser (9) innerhalb der Sandform (8) in der Gießform (1) ausgebildet ist, und daß die Kerne (13) derart ausgebildet und angeordnet sind, daß sie den Speiser (9) durchsetzen und oberhalb der Sandform münden. - Gießform nach Anspruch 1, dadurch gekennzeichnet, daß der Eingießkanal (10) seitlich und unterhalb der Gießhohlräume (11) in der Sandform verläuft.
- Gießform nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Querschnitt der Ausnehmung (5) im Formkasten (4) V-oder U-förmig ausgebildet ist.
- Verfahren zur Herstellung einer Gießform nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß jede Formkastenhälfte im liegenden Zustand mit Sand gefüllt und abgeformt wird, wobei im gleichen Arbeitsgang der Speiser, der Eingießtrichter und die Durchbrüche für die Kerne in die Sandform mit eingeformt werden, daß anschließend die Formkastenhälften mit der Formteilebene und damit mit dem Formhohlraum nach oben gewendet werden, um die Kerne einzulegen, daß die Kerne derart in der Sandform angeordnet werden, daß diese mit einem verlängerten Ende aus der Sandform heraustreten, wobei ein oder mehrere Kerne den Speiser durchsetzen, und daß anschließend die Gießformhälften zusammengefügt und um 90° derart gewendet werden, daß der Abguß in die stehende Gießform erfolgt.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Gießform im steigenden Guß gefüllt wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß in etwa zu dem Zeitpunkt, in dem der Formhohlraum der Gießform mit flüssigem Metall gefüllt ist, frisches Metall in den Speiser bzw. in die Speiseröffnung eingefüllt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19720056A DE19720056A1 (de) | 1997-05-14 | 1997-05-14 | Gießform für automatisch arbeitende Formanlagen sowie Verfahren zur Herstellung der Gießformen |
DE19720056 | 1997-05-14 | ||
US09/256,169 US6244328B1 (en) | 1997-05-14 | 1999-02-23 | Mold for automatically working mold systems and a process for the manufacture of the molds |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0878252A1 EP0878252A1 (de) | 1998-11-18 |
EP0878252B1 true EP0878252B1 (de) | 2000-04-12 |
Family
ID=26036523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98103795A Expired - Lifetime EP0878252B1 (de) | 1997-05-14 | 1998-03-04 | Giessform für automatisch arbeitende Formanlagen sowie Verfahren zur Herstellung der Giessformen |
Country Status (6)
Country | Link |
---|---|
US (1) | US6244328B1 (de) |
EP (1) | EP0878252B1 (de) |
AT (1) | ATE191664T1 (de) |
DE (2) | DE19720056A1 (de) |
ES (1) | ES2145634T3 (de) |
PL (1) | PL326238A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1218126B1 (de) * | 1999-07-02 | 2005-06-15 | International Engine Intellectual Property Company, LLC. | Verfahren und vorrichtung zum giessen |
CN1399582A (zh) * | 1999-10-15 | 2003-02-26 | 洛兰曼迪股份有限公司 | 湿砂型中铸造金属的方法和浇口密封装置 |
JP3592251B2 (ja) * | 2001-03-30 | 2004-11-24 | 日信工業株式会社 | 還元鋳造方法、還元鋳造装置及びこれに用いる成形型 |
DE102006058145A1 (de) | 2006-12-09 | 2008-06-12 | Ksm Castings Gmbh | Verfahren zum Verarbeiten, insbesondere Gießen, eines Materials, Gießform zur Durchführung des Verfahrens und nach dem Verfahren bzw. in der Gießform hergestellte Gegenstände |
US8387678B1 (en) * | 2011-11-18 | 2013-03-05 | General Electric Company | Sensor aided direct gating for metal casting |
CN105382205B (zh) * | 2015-12-07 | 2017-06-13 | 大连金河铸造有限公司 | 油箱铸件铸造的改进工艺 |
CN107999699B (zh) * | 2018-01-24 | 2023-06-02 | 江西力天机械有限公司 | 一种消失模铸造模具 |
CN108405813A (zh) * | 2018-05-10 | 2018-08-17 | 江苏凌特精密机械有限公司 | 一种中间壳类产品模具 |
CN110681846A (zh) * | 2019-09-30 | 2020-01-14 | 山西江淮重工有限责任公司 | 铝合金异形结构件卧式造型立式差压浇注装置及浇注方法 |
PL241319B1 (pl) * | 2020-11-02 | 2022-09-05 | Lothar Thoni | Forma odlewnicza hybrydowa i sposób wykonania formy odlewniczej hybrydowej zwłaszcza do wytwarzania odlewów ze stopów metali |
CN117696830A (zh) * | 2023-11-07 | 2024-03-15 | 广东金志利科技股份有限公司 | 一种基于开合结构的铸造控制方法以及铸造模具 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1542857A (en) * | 1975-11-21 | 1979-03-28 | Workman J | Moulding apparatus |
JPS55106658A (en) * | 1979-02-09 | 1980-08-15 | Hitachi Metals Ltd | Mold of pipe joint |
JPS55106656A (en) * | 1979-02-09 | 1980-08-15 | Hitachi Metals Ltd | Mold |
FR2579494A1 (fr) * | 1985-03-28 | 1986-10-03 | Fouquet Jean Paul | Procede de coulee par gravite d'aciers allies et d'alliages dans une empreinte permanente, permettant la fabrication d'un produit metallique fini du type lingot, de sante radio et en faible quantite |
WO1991012104A1 (en) * | 1990-02-16 | 1991-08-22 | Combustion Engineering, Inc. | Vertical pour casting process |
-
1997
- 1997-05-14 DE DE19720056A patent/DE19720056A1/de not_active Withdrawn
-
1998
- 1998-03-04 ES ES98103795T patent/ES2145634T3/es not_active Expired - Lifetime
- 1998-03-04 DE DE59800122T patent/DE59800122D1/de not_active Expired - Lifetime
- 1998-03-04 EP EP98103795A patent/EP0878252B1/de not_active Expired - Lifetime
- 1998-03-04 AT AT98103795T patent/ATE191664T1/de not_active IP Right Cessation
- 1998-05-11 PL PL98326238A patent/PL326238A1/xx unknown
-
1999
- 1999-02-23 US US09/256,169 patent/US6244328B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19720056A1 (de) | 1998-11-19 |
PL326238A1 (en) | 1998-11-23 |
DE59800122D1 (de) | 2000-05-18 |
ATE191664T1 (de) | 2000-04-15 |
US6244328B1 (en) | 2001-06-12 |
EP0878252A1 (de) | 1998-11-18 |
ES2145634T3 (es) | 2000-07-01 |
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