EP0697929B1 - Zufuhreinrichtung für formkästen - Google Patents
Zufuhreinrichtung für formkästen Download PDFInfo
- Publication number
- EP0697929B1 EP0697929B1 EP94913495A EP94913495A EP0697929B1 EP 0697929 B1 EP0697929 B1 EP 0697929B1 EP 94913495 A EP94913495 A EP 94913495A EP 94913495 A EP94913495 A EP 94913495A EP 0697929 B1 EP0697929 B1 EP 0697929B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moulding
- line section
- conveying line
- flasks
- patterns
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 68
- 239000004576 sand Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000032258 transport Effects 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002996 emotional effect Effects 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C25/00—Foundry moulding plants
Definitions
- the invention relates to conveyors with which mold boxes can be fed to molding machines. From the molding machines the sand (molding sand) is molded in the molding boxes on models. These sand molds (sand mold halves) then become casting molds composed.
- the state of the art that has become apparent through use knows a single conveyor line with two molding machines arranged one behind the other (“molding line” cf. FIG . 2 ).
- the empty molding boxes (1, 2) intended for molding are located there - alternating lower and upper boxes - on the feed roller conveyor (3) of the molding line and are moved by a feed unit (4) by twice the molding box length in the direction of the molding machines (5, 6) clocked ("feed rate"). Since the molding machines are arranged one after the other at an odd pitch, they receive the lower box or upper box intended for them with each feed cycle. This means that the lower boxes pass through the upper box molding machine (5) without stopping, and the upper boxes also pass through the lower box molding machine (6) without a stop.
- the time available for simultaneous molding of a lower and upper box is calculated from the cycle time of the molding system minus the time for the double push of the molding boxes through the molding line; or the other way round, the cycle time of the molding line is calculated from the working time of the two molding machines plus the time for the double push of the molding box line.
- the time for the transport of the boxes is too long due to the large stroke (double push).
- EP-A-0 195 937 describes - roughly outlined - two conveyor lines (sections) arranged next to one another (see FIG. 1 and description page 3, lines 7 to 36), in the course of which a compression station is arranged ( there 14 or 18), which compress different mold boxes (drag mold, cope mold). Due to the machines provided next to each other, connecting conveyor lines must be above and below the associated conveyor lines for only upper boxes or only lower boxes are provided, on which the alternatingly arriving top and bottom boxes are separated and sorted in order to be separately molded along the above-mentioned conveyor lines and then brought together again via the lower connecting section. Obviously, this type of transport path extension takes up a larger space and has different paths for the upper box and lower box, which differ in the length of the upper and lower connecting section.
- the invention solves the aforementioned problem by exchanging mold boxes between two conveyor lines arranged side by side. These funding lines are divided into sections. At the end of In the first section, a mold box is exchanged of one type with a molding box of another type. This happens in the funding cycle (claim 1, claim 2, Claim 10).
- the funding cycle (claim 1, claim 2, Claim 10).
- the first section of the funding line one of the two molding machines arranged; in the course of the second Conveyor line section, which is arranged next to the first, there is no molding machine; in the course of the third Conveyor line section, the second molding machine is provided, the third conveyor line section being the continuation of the forms the first section and accordingly next to the second Section is arranged (claim 2, claim 5).
- Top and bottom boxes come from a sand loading facility, that is upstream of the form line, so a Distributors are provided of the various molding boxes alternately the two arranged side by side Rows of mold boxes feeds (claim 8). At the end of both Rows of mold boxes can be merged (claim 9, Claim 12). It is mechanically easy to set up because it only has to perform a vertical semicircle repositioning movement a respective top box on a respective bottom box sets. Because of the two running side by side different types of mold boxes with each other Sand mold halves only give you the opportunity to do that Collapse using a vertical semicircular movement to execute. Such a semicircle movement is mechanical simple means and quick to reach, so here too Time and effort when putting the finished shapes together can be saved.
- the invention is particularly effective in decoupling the exchange of the mold boxes (with the exchange device, for example as a transverse displacement device with lifting, transverse thrust and lowering movement) from the molding process of the machines.
- the invention achieves also an improvement in the quality of the shapes found in the "molded mold boxes" (the finished molds) shows.
- the surface of the castings can thus be noticeably improved.
- FIG. 1 A non-limiting example is intended to deepen the understanding of the invention. It is shown schematically in FIG. 1 .
- the molding machines 5, 6 for top and bottom boxes are located in a line within the molding section 3 being - seen in Passage direction - the upper box machine 5 in front of the Lower box machine 6 is arranged.
- the Order of the two machines can be interchanged.
- the series of boxes is the Form line in single cycle with a feed unit 4 forward emotional. This can happen because towards the first Molding machine only top boxes 1 can be transported.
- the associated sub-boxes 2 run on a parallel one Roller conveyor 7 - also in single cycle - next to the top boxes forth.
- Section 10 of the shape line are the already formed Upper boxes sideways against the lower boxes to be formed exchanged by means of a transverse displacement device 9. From therefore only sub-boxes are located in the Shape line. These then become the sub-box molding machine fed.
- the boxes OK and UK are exchanged in the form line during the simultaneous working hours of the molding machines 5, 6 and therefore has no influence on the molds available standing time. This is only determined by the length of the feed time the shape line influenced by that described above Halving the stroke (indicated by the length 8 of the Feed device 4) can be reduced by approx. 40%. At the saving is constant time for the molding process therefore directly for shortening the molding cycle Available.
- the folding device 20 can the under and Put top boxes on top of each other, because they are next to each other (parallel in the best case). A simple 180 ° vertical swivel movement of the top box onto the Bottom box gives the finished shape. Even when folding can save time and effort.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Description
Claims (12)
- Fördereinrichtung für Formkästen (1,2,OK,UK), die erste und zweite Modelle beinhalten (Oberkasten,Unterkasten), bei der(a) die erste Modelle beinhaltenden Formkästen (OK,1) entlang eines ersten Förderlinien-Abschnittes (F1) in einem ersten Einzeltakt (ET) förderbar sind;(b) die zweite Modelle beinhaltenden Formkästen (UK,2), entlang eines daneben angeordneten zweiten Förderlinien-Abschnittes (F2) in einem zweiten Einzeltakt (ET) förderbar sind; gekennzeichnet durch(c) eine Austauscheinrichtung (9) am Ende des ersten Förderlinien-Abschnittes (F1), mit welcher die erste Modelle beinhaltenden Formkästen (OK,1) im ersten Einzeltakt (ET) aus dem ersten Förderlinien-Abschnitt (F1) herausnehmbar, dem zweiten Förderlinien-Abschnitt (F2) zuführbar und gegen zweite Modelle beinhaltende Formkästen (UK,2) austauchbar sind.
- Fördereinrichtung nach Anspruch 1, bei der mit der Austauscheinrichtung (9) aus dem zweiten Förderlinien-Abschnitt (F2) zweite Modelle beinhaltende Formkästen (UK,2) herausnehmbar und einem dritten Förderlinien-Abschnitt (F3) zuführbar sind, der die Fortsetzung des ersten Förderlinien-Abschnittes (F1) bildet.
- Fördereinrichtung nach einem der obigen Ansprüche, bei dem die ersten Modelle die Modelle der zu formenden Werkstück-Oberseiten und die zweiten Modelle die Modelle der zu formenden Werkstück-Unterseiten sind.
- Fördereinrichtung nach einem der obigen Ansprüche, bei dem der erste und zweite Einzeltakt (ET; 4, 8) gleichlang bzw. gleichgroß sind, insbesondere zeitlich nicht gegeneinander versetzt sind.
- Fördereinrichtung nach einem der obigen Ansprüche, bei dem je eine Formmaschine (5,6) im Zuge des ersten und dritten Förderlinien-Abschnittes (F1,F3) angeordnet ist, um die Formen - insbesondere Sandformen - in Ober- und Unterkasten (OK,UK) im Gleichtakt zu formen.
- Fördereinrichtung nach einem der obigen Ansprüche, bei der(a) der erste und zweite Einzeltakt (ET; 4, 8) eine insbesondere gleichzeitige Verschiebebewegung aller in dem jeweiligen Förderlinien-Abschnitt (F1,F2,F3) befindlichen Formkästen (Formkasten-Reihe; 7) ist;(b) die Verschiebebewegung eine Wegstrecke (ET) ist, die dem Abstand der Mitten zweier hintereinander angeordneter - gleiche Modelle beinhaltender- Formkästen (1,3) entspricht.
- Fördereinrichtung nach einem der obigen Ansprüche, bei der das Austauschen mittels der Austauscheinrichtung (9) und das Formen mittels der Formmaschinen (5,6) synchronisiert ist, insbesondere gleichzeitig geschieht.
- Fördereinrichtung nach einem der obigen Ansprüche, bei der ein vierter Förderlinien-Abschnitt (F4) dem ersten und zweiten Förderlinien-Abschnitt (F1,F2) vorgelagert ist und letztere beiden Förderlinien-Abschnitte (F1,F2) abwechselnd mit Formkästen (1,2) beschickt.
- Fördereinrichtung nach einem der obigen Ansprüche, die am Ende des dritten und zweiten Förderlinien-Abschnittes (F3,F2) eine Zusammenlege-Vorrichtung aufweist, welche vollständige Formen aus jeweils einem ersten und einem zweiten Formkasten (OK,UK) erstellt.
- Verfahren zum Fördern (Transportieren) von Formkästen (1, 2; OK, UK), die Formsand für Sandformhälften sowie Modelle von Gußteilen enthalten, bei dem(a) erste Modelle beinhaltende Formkästen (1; OK) in einem ersten Einzeltakt (ET, 4) entlang eines ersten Förderlinien-Abschnittes (F1) gefördert werden;(b) zweite Modelle beinhaltende Formkästen (2; UK) entlang eines daneben angeordneten zweiten Förderlinien-Abschnittes (F2) in einem zweiten Einzeltakt (ET; 8) gefördert werden; dadurch gekennzeichnet, daß(c) am Ende des ersten Förderlinien-Abschnittes (F1) erste Modelle beinhaltende - bereits geformte - Formkästen (OK; 1) gegen ungeformte Formkästen (UK; 2) ausgetauscht werden, die in einem dritten Förderlinien-Abschnitt (F3) in einem dritten Einzeltakt weiter gefördert werden, um dort geformt zu werden.
- Verfahren nach Anspruch 10, bei dem die ersten zweiten und dritten Einzeltakte (4, 8, ET) gleichlang sind, insbesondere miteinander ohne Zeitversatz synchronisiert werden.
- Verfahren nach Anspruch 10 oder 11, bei dem am Ende des zweiten (F2) und dritten (F3) Förderlinien-Abschnittes die beiden Sandformenteile (1, 2; OK, UK) zu einer vollständigen Guß-Sandform zusammengelegt (20) werden.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9306964U DE9306964U1 (de) | 1993-05-07 | 1993-05-07 | Zufuhreinrichtung für Formkästen |
DE9306964U | 1993-05-07 | ||
DE4319478 | 1993-06-11 | ||
DE4319478A DE4319478C2 (de) | 1993-05-07 | 1993-06-11 | Zufuhreinrichtung für Formkästen |
PCT/DE1994/000504 WO1994026441A1 (de) | 1993-05-07 | 1994-05-05 | Zufuhreinrichtung für formkästen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0697929A1 EP0697929A1 (de) | 1996-02-28 |
EP0697929B1 true EP0697929B1 (de) | 1998-01-21 |
EP0697929B2 EP0697929B2 (de) | 2003-08-13 |
Family
ID=25926706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94913495A Expired - Lifetime EP0697929B2 (de) | 1993-05-07 | 1994-05-05 | Zufuhreinrichtung für formkästen |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0697929B2 (de) |
AT (1) | ATE162438T1 (de) |
DE (1) | DE4345470C2 (de) |
ES (1) | ES2114190T5 (de) |
WO (1) | WO1994026441A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000043150A1 (en) * | 1999-01-25 | 2000-07-27 | Künkel-Wagner Prozesstechnologie GmbH | Nested machine arrangement for filling and compacting of molding material |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1222572A (fr) * | 1958-04-28 | 1960-06-10 | Combustion Eng | Perfectionnements apportés aux procédés et installations de fonderie |
DE1236140B (de) * | 1964-06-05 | 1967-03-09 | Erwin Buehrer | Vorrichtung zum selbsttaetigen Umsetzen von Formhaelften von einer Foerdervorrichtung auf eine andere oder zum Schliessen von Formen |
JPS57152349A (en) * | 1981-03-17 | 1982-09-20 | Sintokogio Ltd | Simultaneous molding line for two molds |
US4628986A (en) * | 1985-03-26 | 1986-12-16 | Combustion Engineering, Inc. | Molding register system |
FR2657799B1 (fr) * | 1990-02-05 | 1994-04-01 | Peugeot Automobiles | Installation de fonderie pour metaux ferreux. |
DE4226778A1 (de) * | 1992-08-13 | 1994-02-17 | Badische Maschf Gmbh | Verfahren zum Transportieren von Formkasten und nach dem Verfahren arbeitende Gießerei-Formanlage |
-
1993
- 1993-06-11 DE DE4345470A patent/DE4345470C2/de not_active Expired - Lifetime
-
1994
- 1994-05-05 EP EP94913495A patent/EP0697929B2/de not_active Expired - Lifetime
- 1994-05-05 WO PCT/DE1994/000504 patent/WO1994026441A1/de active IP Right Grant
- 1994-05-05 AT AT94913495T patent/ATE162438T1/de active
- 1994-05-05 ES ES94913495T patent/ES2114190T5/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE162438T1 (de) | 1998-02-15 |
EP0697929B2 (de) | 2003-08-13 |
DE4345470C2 (de) | 2001-03-08 |
ES2114190T3 (es) | 1998-05-16 |
ES2114190T5 (es) | 2004-05-01 |
WO1994026441A1 (de) | 1994-11-24 |
EP0697929A1 (de) | 1996-02-28 |
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