Claims
- 1. Apparatus for producing foundry molds comprising vessel means for receiving therein a dosed amount of mold forming material, vacuum means for applying to said vessel means a suction effect to render mold forming material contained within said vessel means into a more cohesive mass, pressure means located adjacent said vessel means for applying a pressurized force to said mold forming material to propel said material out of said vessel means, valve means operatively interposed between said pressure means and said vessel means to control application of said pressurized force to said mold forming material, and pattern means including molding box means for receiving said mold forming material from said vessel means to form a mold therefrom, said valve means operating to block fluid flow between said pressure means and said vessel means while said vacuum means is applying suction to mold forming material contained within said vessel means, said valve means operating to open to permit fluid flow from said pressure means into said vessel means after said vacuum means have ceased applying suction within said vessel means and after said vessel means and said molding box means have been placed in operative relationship to enable transference of said mold forming material from said vessel means into said molding box means, with opening of said valve means operating to cause said pressure means to apply a pressurized force to said mold forming material to propel said mold forming material against said pattern means and to compress said mold forming material about said pattern means in order to form said foundry molds therefrom.
- 2. Apparatus for producing foundry molds comprising a vessel for receiving therein mold forming material, said vessel including an open side, a pressure tank adjoining said vessel on the side thereof opposite said open side, a silo for depositing mold forming material into said vessel, said silo including an outlet opening adapted to be placed in operative relationship with the open side of said vessel in order to enable said mold forming material to be delivered into said vessel from said silo when said silo and said vessel are moved into appropriate relative positions adjoining each other, valve means for selectively placing said pressure tank and said vessel in fluid flow communication with each other, molding box means including a pattern device adapted to be operatively joined with said vessel to form a generally enclosed chamber therebetween and pressure means for applying a pressurized fluid within said pressure tank, said valve means operating to open flow communication between said vessel and said pressure tank to admit said pressurized fluid into said vessel when said molding box means and said vessel are operatively joined in order thereby to accelerate said mold forming material through said enclosed chamber by application of said pressurized fluid thereto and to cause said mold forming material to strike said pattern device and to be compressed about said pattern device within said molding box means.
- 3. Apparatus according to claim 2 wherein said vessel comprises an inner surface which diverges toward said molding box means.
- 4. Apparatus according to claim 2 wherein said vessel comprises an inner surface defined by sides extending toward said molding box means, said sides being substantially parallel to each other.
- 5. Apparatus according to claim 2 wherein said molding box means comprises a volumetric cross-section extending parallel to said pattern device, said volumetric cross-section of said molding box means being substantially equal to a volumetric cross-section of said vessel extending in a parallel plane.
- 6. Apparatus according to claim 2 wherein said molding box means and said pattern device are connected with said vessel in a fluid tight relationship.
- 7. Apparatus according to claim 2 wherein said pattern device is movable in all directions.
- 8. Apparatus according to claim 2 wherein said pressure tank includes piston means connected with said valve means, said piston means in said pressure tank being adapted to actuate said valve means.
- 9. Apparatus according to claim 2 further including a perforated support plate arranged within said vessel adjacent said valve means defining within said vessel a space between said perforated plate and said valve means.
- 10. Apparatus according to claim 9 wherein said perforated support plate is arranged for limited movement in the direction of said pattern device.
- 11. Apparatus according to claim 2 wherein said vessel comprises an inner surface having a cross-sectional area which is undiminished taken in the direction toward said molding box means.
- 12. Apparatus for producing foundry molds comprising a vessel for receiving therein mold forming material, said vessel including an open side, a pressure tank adjoining said vessel on the side thereof opposite said open side, valve means for selectively placing said pressure tank and said vessel in fluid flow communication with each other, molding box means including a pattern device adapted to be operatively joined with said vessel to form a generally enclosed chamber therebetween, pressure means for applying a pressurized fluid within said pressure tank, said valve means operating to open flow communication between said vessel and said pressure tank to admit said pressurized fluid into said vessel when said molding box means and said vessel are operatively joined in order thereby to accelerate said mold forming material through said enclosed chamber by application of said pressurized fluid thereto and to cause said mold forming material to strike said pattern device and to be compressed about said pattern device within said molding box means, an intermediate plate extending between said pressure tank and said vessel, said intermediate plate having said valve means formed therethrough, said vessel, said pressure tank and said intermediate plate being assembled as a unit, with said unit being formed with an axis of symmetry extending through said vessel, said intermediate plate and said pressure tank, and means enabling said unit to be swiveled about an axis extending perpendicularly to said common axis of symmetry of said unit.
- 13. Apparatus according to claim 12 further including a silo for delivering mold forming material into said vessel, said pressure tank and said silo being movable in the direction of said common axis of symmetry.
- 14. Apparatus according to claim 13 wherein said silo is situated beneath said vessel.
- 15. Apparatus for producing foundry molds comprising a vessel for receiving therein mold forming material, said vessel including an open side, a pressure tank adjoining said vessel on the side thereof opposite said open side, valve means for selectively placing said pressure tank and said vessel in fluid flow communication with each other, molding box means including a pattern device adapted to be operatively joined with said vessel to form a generally enclosed chamber therebetween and pressure means for applying a pressurized fluid within said pressure tank, said valve means operating to open flow communication between said vessel and said pressure tank to admit said pressurized fluid into said vessel when said molding box means and said vessel are operatively joined in order thereby to accelerate said mold forming material through said enclosed chamber by application of said pressurized fluid thereto and to cause said mold forming material to strike said pattern device and to be compressed about said pattern device within said molding box means, the chamber formed between said molding box means and said vessel being connected to a vacuum unit forming material through said enclosed chamber by application of said pressurized fluid thereto and to cause said mold forming material to strike said pattern device and to be compressed about said pattern device within said molding box means.
- 16. Apparatus for producing foundry molds comprising a vessel for receiving therein mold forming material, said vessel including an open side, vacuum means for applying suction to said vessel in order to compact and render into a more cohesive state mold forming material contained therein, a pressure tank adjoining said vessel on the side thereof opposite said open side, valve means for selectively placing said pressure tank and said vessel in fluid flow communication with each other, molding box means including a pattern device adapted to be operatively joined with said vessel to form a generally enclosed chamber therebetween and pressure means for applying a pressurized fluid within said pressure tank, said valve means operating to open flow communication between said vessel and said pressure tank to admit said pressurized fluid into said vessel when said molding box means and said vessel are operatively joined in order thereby to accelerate said mold forming material through said enclosed chamber by application of said pressurized fluid thereto and to cause said mold forming material to strike said pattern device and to be compressed about said pattern device within said molding box means.
- 17. Apparatus according to claim 16 wherein said vacuum means are connected to be placed in communication with the interior of said vessel at a location adjacent said valve means.
Priority Claims (2)
Number |
Date |
Country |
Kind |
8151/76 |
Jun 1976 |
CHX |
|
6181/77 |
May 1977 |
CHX |
|
Parent Case Info
This is a division of application Ser. No. 809,040 filed June 22, 1977 and now U.S. Pat. No. 4,144,925 issued Mar. 20, 1979.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
1594598 |
Campbell |
Aug 1926 |
|
3659642 |
Vasilovsky et al. |
May 1972 |
|
3807483 |
Buhler |
Apr 1974 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
44-19522 |
Aug 1969 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
809040 |
Jun 1977 |
|