WO2001072450A1 - Moulding machine for producing flaskless moulds and methods for operating said machine - Google Patents
Moulding machine for producing flaskless moulds and methods for operating said machine Download PDFInfo
- Publication number
- WO2001072450A1 WO2001072450A1 PCT/DK2000/000153 DK0000153W WO0172450A1 WO 2001072450 A1 WO2001072450 A1 WO 2001072450A1 DK 0000153 W DK0000153 W DK 0000153W WO 0172450 A1 WO0172450 A1 WO 0172450A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cope
- drag
- squeeze
- tilting
- accordance
- Prior art date
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
- B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
Definitions
- the present invention relates to a moulding machine for producing flaskless moulds and methods for operating said machine of the kind set forth in the preamble of claims 1 , 4 and 8, respectively.
- Typical types of machines for producing flaskless moulds are e.g. described in EP- 0,468,355 and EP-0,122,116.
- Such moulding machines comprise a drag flask, a cope flask and a first and second squeeze plate associated with the cope and the drag flask, respectively.
- the flasks are mounted to be relatively movable towards and away from each other.
- means are provided to move the squeeze plates towards each other.
- the different movable components are guided in their relative movements, e.g. by guide columns.
- the patterns in the pattern plates be evenly distributed over the surfaces of the pattern plates.
- the alternative mentioned in claim 8 uses the tilting means for pre-distorting the mould surfaces before compacting the mould material, whereby the resulting mould parts preferably achieve undistorted outer surfaces.
- Figures 1-3 schematically show the distortion of moulds when using an unevenly distributed pattern and the resulting tilting movement during the pushing out of the mould parts
- Figure 4 shows an embodiment of the apparatus in accordance with the invention, in which the two squeeze plates are used for removing the moulds from the cope and drag flasks
- Figure 5 shows an alternative embodiment of the apparatus in accordance with the invention in which the squeeze plate associated with the cope flask is used for pushing out the mould parts and a separate table is provided for receiving and lowering the superposed mould parts.
- Figure 1 schematically illustrates the tilting of the squeeze plates 5,6 during the step of compacting the mould material in the cope and drag flasks 3,4 when using a pattern plate 9 with unevenly distributed patterns.
- the tilting is highly exaggerated in Figures 1-3 in order to visualize the phenomenon.
- the pattern plate is removed by moving the cope flask 3 and drag flask 4 away from each other and moving the pattern plate 9 away, whereupon the cope flask 3 and drag flask 4 are moved together as shown in Figure 2, thereby superposing the cope and drag.
- the superposed cope and drag are pressed out of the cope and drag flasks 3,4, e.g. using the first squeeze plate 5 for pressing the superposed cope and drag down and using the second squeeze plate 6 or a separate table 14 for receiving and lowering the superposed cope and drag, as illustrated in Figure 2.
- the moulding machine shown in Figure 4 is provided with means 7,8 for tilting the two squeeze plates 5,6 relative to the corresponding mounting means 1 ,2, whereby the two squeeze plates 5,6 can be aligned with the surfaces of the cope and drag before the pushing out of said superposed cope and drag.
- the tilting means 7,8 schematically shown in Figure 4 comprise hydraulic cylinders at each corner of the squeeze plates 5,6.
- the two squeeze plates 5,6 are aligned with the outer surfaces of the cope and drag by means of the tilting means 7,8.
- the tilting means comprise hydraulic cylinders 7,8 as shown in Figure 4
- the alignment of the two squeeze plates 5,6 with the surfaces of the cope and drag can be performed by extending the pistons of the hydraulic cylinders 7,8 a certain distance and leaving the hydraulic connections to the cylinders open and moving the mounting constructions for the first and second squeeze plates 5,6 towards the surfaces of the cope and drag whereby hydraulic fluid will be pressed out of the cylinders 7,8 when the squeeze plates 5,6 come into contact with the surfaces of the cope and drag.
- the hydraulic connec- tions to the cylinders 7,8 may be closed off, thereby locking the squeeze plates 5,6 in their tilted position and keeping this position during the push-out step.
- the hydraulic cylinders 7,8 are moved to their retracted neutral position thereby setting the tilts of the squeeze plates 5,6 to zero, whereafter the superposed cope and drag can be removed from the squeeze plate 6 supporting the superposed cope and drag in the usual way, e.g. as described in PCT/DK 99/00077 or EP-0,122,116 or EP-0,468,355.
- the apparatus shown in Figure 5 functions in the same way as the apparatus shown in Figure 4, but uses a separate table 14 for receiving and lowering the superposed cope and drag and correspondingly, said separate table 14 is provided with tilting means 8 just as the squeeze plate 6 in the construction shown in Figure 4.
- Figure 5 shows the moving means 13 for moving the separate table 14 up and down. Due to the fact that the separate table 14 does not take part in the compacting, the above considerations regarding the provision of fixed stops for the tilting are not relevant for the tilting means 8 for the separate table 14.
- connection between the hydraulic cylinders 7,8 and the squeeze plates 5,6 is made flexible, e.g. by having a loose fitting between the piston and the squeeze plate.
- the filling of the cope and drag flask 3,4 with mould material can be performed in different ways, e.g. as described in EP-0,122,116, where the cope and drag flasks 3,4 are in their horizontal position, as shown in Figures 1-5, or with the cope and drag flask 3,4 in a vertical position, as e.g. described in PCT/DK 99/00077 and in EP-0,468,355.
- the pre-distortion tilting of the squeeze plates 5,6 may adaptively be adjusted in accordance with the resulting tilting of the surfaces of the cope and drag, whereby an adaptive minimizing of the resultant distortion can be achieved.
- tilting means are present in the form of hydraulic cylinders 7,8, it is evident for a man skilled in the art that other tilting means may be used for providing the tilting of the squeeze plates and/or separate table. Furthermore, it is evident that an improvement relative to the situation illustrated in Figures 2 and 3 may be achieved by only tilting one of the squeeze plates 5,6 and/or the separate table 14.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
In a moulding machine for producing flaskless moulds, said machine comprising two flasks (3, 4) and corresponding squeeze plates (5, 6) with associated mounting means (1, 2) allowing relative movement of the squeeze plates (5, 6) in an axial direction, provision of tilting means (7, 8) provides a possibility of aligning the squeeze plates (5, 6) with possibly distorted mould surfaces, thereby preventing the produced mould parts from tilting during the push-out from the flasks (3, 4), said tilting movement potentially leading to misalignment of the superposed mould parts (copie and drag).
Description
MOULDING MACHINE FOR PRODUCING FLASKLESS MOULDS AND METHODS FOR OPERATING SAID MACHINE
TECHNICAL FIELD
The present invention relates to a moulding machine for producing flaskless moulds and methods for operating said machine of the kind set forth in the preamble of claims 1 , 4 and 8, respectively.
BACKGROUND ART
Different types of machines for producing flaskless moulds are e.g. described in EP- 0,468,355 and EP-0,122,116. Typically such moulding machines comprise a drag flask, a cope flask and a first and second squeeze plate associated with the cope and the drag flask, respectively. In order to be able to place a pattern plate between the cope and the drag flasks, and to remove said pattern plate after compacting the mould material, the flasks are mounted to be relatively movable towards and away from each other. For the compacting of the mould material in the flasks, means are provided to move the squeeze plates towards each other. The different movable components are guided in their relative movements, e.g. by guide columns.
In order to prevent distortion of the squeeze plates during the compacting of the mould material, e.g. in the form of a tilting movement, it is recommended that the patterns in the pattern plates be evenly distributed over the surfaces of the pattern plates. However, it is not always possible to provide such an even distribution of the patterns. Under such conditions the squeeze plates will be distorted due to high, unevenly distributed squeezing forces. This will result in distorted backsides of the produced moulds. When such moulds are pushed out of the cope and drag flasks, usually using the squeeze plate associated with the cope flask for moving the moulds down and using either the squeeze plate associated with the drag flask or a separate table for supporting the moulds and lowering thereof, the moulds will be tilted into alignment with the squeeze plate(s) and/or the separate table, said tilting causing a mismatch between the mould parts (cope and drag).
DISCLOSURE OF THE INVENTION
It is the object of the invention to provide a moulding machine and methods of operating said machine of the kind mentioned above, with which the above- mentioned disadvantages are compensated or alleviated. This is achieved by a machine of said kind, which according to the invention also comprises the features set forth in the characterizing clause of claim 1 , and a method of the kind set forth in the preamble of claim 4, which according to the invention also comprises features set forth in the characterizing clause of claim 4, and alternatively with a method of the kind set forth in the preamble of claim 8, which according to the invention also comprises the features set forth in the characterizing clause of claim 8. By providing tilting means for the squeeze plates and/or a separate table for receiving and lowering the superposed cope and drag, when they are discharged from the cope and drag flasks, it is possible to adjust these plates to correspond to possibly distorted surfaces of the moulds during the pushing out of the moulds, thereby avoiding the above-mentioned tilting movement of the moulds and the resulting mismatch between the mould parts.
The alternative mentioned in claim 8 uses the tilting means for pre-distorting the mould surfaces before compacting the mould material, whereby the resulting mould parts preferably achieve undistorted outer surfaces.
SHORT DESCRIPTION OF THE DRAWINGS
Figures 1-3 schematically show the distortion of moulds when using an unevenly distributed pattern and the resulting tilting movement during the pushing out of the mould parts,
Figure 4 shows an embodiment of the apparatus in accordance with the invention, in which the two squeeze plates are used for removing the moulds from the cope and drag flasks, and Figure 5 shows an alternative embodiment of the apparatus in accordance with the invention in which the squeeze plate associated with the cope flask is used for
pushing out the mould parts and a separate table is provided for receiving and lowering the superposed mould parts.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figure 1 schematically illustrates the tilting of the squeeze plates 5,6 during the step of compacting the mould material in the cope and drag flasks 3,4 when using a pattern plate 9 with unevenly distributed patterns. The tilting is highly exaggerated in Figures 1-3 in order to visualize the phenomenon.
After the squeezing, as illustrated in Figure 1 , the pattern plate is removed by moving the cope flask 3 and drag flask 4 away from each other and moving the pattern plate 9 away, whereupon the cope flask 3 and drag flask 4 are moved together as shown in Figure 2, thereby superposing the cope and drag. After this, the superposed cope and drag are pressed out of the cope and drag flasks 3,4, e.g. using the first squeeze plate 5 for pressing the superposed cope and drag down and using the second squeeze plate 6 or a separate table 14 for receiving and lowering the superposed cope and drag, as illustrated in Figure 2. By this pressing, the upper surface of the cope is first brought into alignment with the first squeeze plate 5, which is now undistorted due to the much lower forces applied during this step, and hereby the cope and drag are tilted as illustrated in Figure 2, which results in a mismatch between the cope and drag.
By the further downward movement of the cope and drag, these are eventually released from the cope and drag flasks 3,4 and a further tilting movement is induced when the drag comes to rest on the second squeeze plate 6 or the separate table 14 for receiving and lowering the superposed cope and drag, as illustrated in Figure 3. This tilting may induce further misalignment of the mould parts and possibly tear-off at the interface between the cope and drag.
In order to prevent the tilting movements described in connection with Figures 1-3, the moulding machine shown in Figure 4 is provided with means 7,8 for tilting the two squeeze plates 5,6 relative to the corresponding mounting means 1 ,2, whereby the two squeeze plates 5,6 can be aligned with the surfaces of the cope and drag before the pushing out of said superposed cope and drag. The tilting means 7,8
schematically shown in Figure 4 comprise hydraulic cylinders at each corner of the squeeze plates 5,6.
During the compacting step, schematically shown in Figure 1 , the hydraulic cylinders 7,8 are retracted in such a way that the corresponding squeeze plates 5,6 are supported on the cylinders 7,8, functioning as fixed stops, in such a way that the hydraulic system in said cylinders are not subjected to the compacting forces used during compacting.
After the compacting step, the two squeeze plates 5,6 are aligned with the outer surfaces of the cope and drag by means of the tilting means 7,8. When the tilting means comprise hydraulic cylinders 7,8 as shown in Figure 4, the alignment of the two squeeze plates 5,6 with the surfaces of the cope and drag can be performed by extending the pistons of the hydraulic cylinders 7,8 a certain distance and leaving the hydraulic connections to the cylinders open and moving the mounting constructions for the first and second squeeze plates 5,6 towards the surfaces of the cope and drag whereby hydraulic fluid will be pressed out of the cylinders 7,8 when the squeeze plates 5,6 come into contact with the surfaces of the cope and drag. After a certain movement of the mounting constructions 1 ,2, the hydraulic connec- tions to the cylinders 7,8 may be closed off, thereby locking the squeeze plates 5,6 in their tilted position and keeping this position during the push-out step. After completion of the push-out step, when the cope and drag are completely free of the cope and drag flasks 3,4, the hydraulic cylinders 7,8 are moved to their retracted neutral position thereby setting the tilts of the squeeze plates 5,6 to zero, whereafter the superposed cope and drag can be removed from the squeeze plate 6 supporting the superposed cope and drag in the usual way, e.g. as described in PCT/DK 99/00077 or EP-0,122,116 or EP-0,468,355.
The apparatus shown in Figure 5 functions in the same way as the apparatus shown in Figure 4, but uses a separate table 14 for receiving and lowering the superposed cope and drag and correspondingly, said separate table 14 is provided with tilting means 8 just as the squeeze plate 6 in the construction shown in Figure 4. Figure 5 shows the moving means 13 for moving the separate table 14 up and down. Due to the fact that the separate table 14 does not take part in the compacting, the above
considerations regarding the provision of fixed stops for the tilting are not relevant for the tilting means 8 for the separate table 14.
In order to enable a tilting movement of the squeeze plates 5,6, the connection between the hydraulic cylinders 7,8 and the squeeze plates 5,6 is made flexible, e.g. by having a loose fitting between the piston and the squeeze plate.
The filling of the cope and drag flask 3,4 with mould material can be performed in different ways, e.g. as described in EP-0,122,116, where the cope and drag flasks 3,4 are in their horizontal position, as shown in Figures 1-5, or with the cope and drag flask 3,4 in a vertical position, as e.g. described in PCT/DK 99/00077 and in EP-0,468,355.
When the squeeze plates 5,6, as shown in Figure 4, are provided with tilting means 7,8, this gives a possibility of tilting the squeeze plates 5,6 before and during the filling of the cope and drag flasks 3,4 with moulding material, thereby pre-distorting the outer surfaces of the cope and drag, which can be used to minimize or even neutralize the distortion during compaction, as illustrated in Figure 1.
When using this method of pre-distortion, the pre-distortion tilting of the squeeze plates 5,6 may adaptively be adjusted in accordance with the resulting tilting of the surfaces of the cope and drag, whereby an adaptive minimizing of the resultant distortion can be achieved.
Although the invention above has been described in connection with embodiments, where the tilting means are present in the form of hydraulic cylinders 7,8, it is evident for a man skilled in the art that other tilting means may be used for providing the tilting of the squeeze plates and/or separate table. Furthermore, it is evident that an improvement relative to the situation illustrated in Figures 2 and 3 may be achieved by only tilting one of the squeeze plates 5,6 and/or the separate table 14.
Claims
1. Moulding machine for producing flaskless moulds comprising
- a drag flask (4) and a cope flask (3) arranged to be movable relatively towards each other and away from one another,
- a first squeeze plate (5) associated with the cope flask (3),
- a second squeeze plate (6) associated with the drag flask (4),
- first mounting means (1) for the first squeeze plate (5) allowing relative movement of the first squeeze plate (5) in an axial direction, and - second mounting means (2) for the second squeeze plate (6) allowing relative movement of the second squeeze plate (6) in an axial direction, characterised by further comprising
- means (7,8) for tilting at least one of said squeeze plates (5,6) and/or a separate table (14) for receiving and lowering the superposed cope and drag when they are discharged from the cope and drag flasks (3,4), relative to the corresponding mounting means (1,2).
2. Moulding machine in accordance with claim 1, characterized by said tilting means (7,8) comprising a number of hydraulic cylinders (7,8), preferably four, one at each corner of the corresponding squeeze plate (5,6) and /or table, mounted between the squeeze plates (5,6) and/or the separate table (14) and the corresponding mounting means (1,2).
3. Moulding machine in accordance with claim 2, c h a ra cte r i ze d by comprising flexible connections between the hydraulic cylinders (7,8) and the corresponding squeeze plate and/or table, said flexible connections being dimensioned to allow a certain tilting of the corresponding squeeze plate and/or table without inducing significant torque forces to the hydraulic cylinders (7,8).
4. Moulding machine in accordance with claim 1,2 or 3, characterized by comprising means for transmitting the compacting forces from the mounting constructions (1,2) to the squeeze plates (5,6) without loading the tilting means (7,8), e.g. in the form of a number of fixed stops.
5. Method of operating the moulding machine in accordance with any of the claims 1-4, comprising the steps of
- closing the cope and drag flasks by means of the pattern plate (9) and the two squeeze plates (5,6), - filling the moulding chambers with compressible mould material,
- compacting the compressible mould material by moving the two squeeze plates (5,6) towards each other,
- moving the cope and drag flasks (3,4) away from each other in order to remove the pattern plate (9), - reassembling the cope and drag flasks for superposing the cope and drag,
- pushing out the cope and drag from the cope and drag flask by moving the first squeeze plate (5) associated with the cope flask into the cope flask and receiving the superposed cope and drag (3,4) on the second squeeze plate (6) or on a separate table for receiving the superposed cope and drag, c h a r a c t e r i z e d by further comprising the steps of
- before the push-out step, tilting the surface of the second squeeze plate (6) or the separate table (14), whichever is used for receiving and lowering the superposed cope and drag, during push out, in such a way that said surface is aligned with a distorted bottom surface of the produced drag, thereby preventing the superposed cope and drag from tilting during the pushing out from the cope and drag flasks (3,4).
6. Method of operating the moulding machine in accordance with any of the claims 1-4, comprising the steps of - closing the cope and drag flasks by means of the pattern plate (9) and the two squeeze plates (5,6),
- filling the moulding chambers with compressible mould material,
- compacting the compressible mould material by moving the two squeeze plates (5,6) towards each other, - moving the cope and drag flasks (3,4) away from each other in order to remove the pattern plate (9),
- reassembling the cope and drag flasks for superposing the cope and drag, pushing out the cope and drag from the cope and drag flask by moving the first squeeze plate (5) associated with the cope flask into the cope flask and receiving the superposed cope and drag (3,4) on the second squeeze plate (6) or on a separate table (14) for receiving the superposed cope and drag, cha racterized by comprising the step of
- before the pushing-out step, tilting the surface of the first squeeze plate (5) in such a way that said surface is aligned with a distorted top surface of the cope, thereby preventing the first squeeze plate (5) from tilting the cope during the push-out step.
7. Method in accordance with claims 5 and/or 6, c h a ra cte r i z e d by comprising the step of
- adapting the tilting to the distorted surface(s) using the distorted surface(s) to align the surfaces in a released state of the tilting means (7,8) and subsequently locking the tilting means (7,8) to maintain said alignment during the push-out step.
8. Method in accordance with any of the claims 5-7, characterized by further comprising the step of - setting the tilt to zero after completion of the push-out step.
9. Method of operating the apparatus in accordance with any of the claims 1-4, comprising the steps of
- closing the cope and drag flasks by means of the pattern plate (9) and the two squeeze plates (5,6),
- filling the moulding chambers with compressible mould material,
- compacting the compressible mould material by moving the two squeeze plates (5,6) towards each other,
- moving the cope and drag flasks (3,4) away from each other in order to remove the pattern plate (9),
- reassembling the cope and drag flasks for superposing the cope and drag, pushing out the cope and drag from the cope and drag flask by moving the first squeeze plate (5) associated with the cope flask into the cope flask and receiving the superposed cope and drag (3,4) on the second squeeze plate (6) or on a separate table (14) for receiving the superposed cope and drag, cha racterized by comprising the steps of
- tilting the squeeze plates (5,6) before filling the cope and drag flasks (3,4) with compressible mould material in order to pre-distort the surfaces of said cope and drag, - removing the tilting during compacting step, whereby said pre-distortion is removed, preferably leading to undistorted top and bottom surfaces of the resulting cope and drag.
10. Method in accordance with claim 9, characterized by comprising the further step of using the method in accordance with any of the claims 5-8, if a residual distortion is present after using the method in accordance with claim 8.
11. Method in accordance with claims 9 and 10, c h a r a c t e r i z e d by comprising the step of
- adapting the tilting for providing pre-distortion in accordance with claim 9, using parameters of the compensation used in accordance with claim 10 for the previously produced mould.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DK2000/000153 WO2001072450A1 (en) | 2000-03-29 | 2000-03-29 | Moulding machine for producing flaskless moulds and methods for operating said machine |
| AU2000234198A AU2000234198A1 (en) | 2000-03-29 | 2000-03-29 | Moulding machine for producing flaskless moulds and methods for operating said machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DK2000/000153 WO2001072450A1 (en) | 2000-03-29 | 2000-03-29 | Moulding machine for producing flaskless moulds and methods for operating said machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001072450A1 true WO2001072450A1 (en) | 2001-10-04 |
Family
ID=8149384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DK2000/000153 WO2001072450A1 (en) | 2000-03-29 | 2000-03-29 | Moulding machine for producing flaskless moulds and methods for operating said machine |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2000234198A1 (en) |
| WO (1) | WO2001072450A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752775A (en) * | 2007-06-25 | 2014-04-30 | 迪萨工业有限公司 | Machine for manufacturing sandbox-free sand mold |
| WO2018104842A2 (en) | 2016-12-05 | 2018-06-14 | Disa Industries A/S | Sand moulding machine and method of producing sand mould parts |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3744550A (en) * | 1971-02-12 | 1973-07-10 | S Larkin | Sand mold formation |
| SU508328A1 (en) * | 1974-03-19 | 1976-03-30 | Научно-Исследовательский Институттехнологии Автомобильной Промышленности | Installation for the manufacture of flaskless forms |
| US4063586A (en) * | 1976-02-02 | 1977-12-20 | Erwin Buhrer | Mold forming apparatus with mold flask stabilizing means |
| EP0122116A2 (en) * | 1983-04-07 | 1984-10-17 | Dansk Industri Syndikat A/S | A machine for the production of flaskless, horizontally divided casting moulds of sand or similar material |
| EP0129375A2 (en) * | 1983-06-14 | 1984-12-27 | Dansk Industri Syndikat A/S | A method for stabilizing boxless molds |
| EP0493977A2 (en) * | 1991-01-02 | 1992-07-08 | Taiyo Chuki Co., Ltd. | Molding machine |
-
2000
- 2000-03-29 WO PCT/DK2000/000153 patent/WO2001072450A1/en active Application Filing
- 2000-03-29 AU AU2000234198A patent/AU2000234198A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3744550A (en) * | 1971-02-12 | 1973-07-10 | S Larkin | Sand mold formation |
| SU508328A1 (en) * | 1974-03-19 | 1976-03-30 | Научно-Исследовательский Институттехнологии Автомобильной Промышленности | Installation for the manufacture of flaskless forms |
| US4063586A (en) * | 1976-02-02 | 1977-12-20 | Erwin Buhrer | Mold forming apparatus with mold flask stabilizing means |
| EP0122116A2 (en) * | 1983-04-07 | 1984-10-17 | Dansk Industri Syndikat A/S | A machine for the production of flaskless, horizontally divided casting moulds of sand or similar material |
| EP0129375A2 (en) * | 1983-06-14 | 1984-12-27 | Dansk Industri Syndikat A/S | A method for stabilizing boxless molds |
| EP0493977A2 (en) * | 1991-01-02 | 1992-07-08 | Taiyo Chuki Co., Ltd. | Molding machine |
Non-Patent Citations (1)
| Title |
|---|
| DATABASE WPI Section Ch Week 197709, Derwent World Patents Index; Class M22, AN 1977-16143Y, XP002901426 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752775A (en) * | 2007-06-25 | 2014-04-30 | 迪萨工业有限公司 | Machine for manufacturing sandbox-free sand mold |
| CN103752775B (en) * | 2007-06-25 | 2018-02-02 | 迪萨工业有限公司 | For manufacturing the machine of flaskless moulds |
| WO2018104842A2 (en) | 2016-12-05 | 2018-06-14 | Disa Industries A/S | Sand moulding machine and method of producing sand mould parts |
| WO2018104842A3 (en) * | 2016-12-05 | 2018-11-22 | Disa Industries A/S | Sand moulding machine and method of producing sand mould parts |
| CN110520229A (en) * | 2016-12-05 | 2019-11-29 | 迪萨工业有限公司 | The method of sand mo(u)ld machine and production sand mo(u)ld component |
| US10919087B2 (en) | 2016-12-05 | 2021-02-16 | Disa Industries A/S | Sand moulding machine and method of producing sand mould parts |
| CN110520229B (en) * | 2016-12-05 | 2021-06-15 | 迪萨工业有限公司 | Sand moulding machine and method for producing sand mould parts |
| US11173540B2 (en) | 2016-12-05 | 2021-11-16 | Disa Industries A/S | Sand moulding machine and method of producing sand mould parts |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2000234198A1 (en) | 2001-10-08 |
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