EP0688618B1 - Peening unit for shell-molding machines - Google Patents
Peening unit for shell-molding machines Download PDFInfo
- Publication number
- EP0688618B1 EP0688618B1 EP95109358A EP95109358A EP0688618B1 EP 0688618 B1 EP0688618 B1 EP 0688618B1 EP 95109358 A EP95109358 A EP 95109358A EP 95109358 A EP95109358 A EP 95109358A EP 0688618 B1 EP0688618 B1 EP 0688618B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- peening
- molding machines
- molds
- articulated arm
- 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
- 238000010112 shell-mould casting Methods 0.000 title claims description 32
- 239000011324 bead Substances 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010908 decantation Methods 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- -1 residues Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C23/00—Tools; Devices not mentioned before for moulding
- B22C23/02—Devices for coating moulds or cores
Definitions
- the present invention relates to a peening unit for shell-molding machines.
- peening units are currently used to clean the molds of shell-molding machines; in practice, these units spray, by means of compressed air, very small beads of glass or other material that clean the mold by acting on its surface.
- EP-A-5 611 discloses (Fig. 1) a mould peening station (1) to which molds (5) are transported for cleaning on bogies (6) having wheels (7) supported on a track (8).
- peening units have already been used which are mounted on a truck that can be placed at the shell-molding machine, which is preset so as to overturn the two molds and arrange them so as to be accessible by the peening unit.
- the aim of the present invention is indeed to eliminate the drawbacks described above by providing a peening unit for shell-molding machines that does not produce any hindrance during mold cleaning, so that the peening unit can operate without hindering in any way the shell-molding machines that are arranged adjacent thereto.
- a particular object of the invention is to provide a peening unit that, in addition to cleaning the mold directly inside the machine, also allows to significantly reduce external scattering of dust, with full recovery of the beads that are used.
- Another object of the present invention is to provide a peening unit in which the operator can activate the bead spraying gun directly from the outside of the peening unit, thus simplifying all the related operations.
- Another object of the present invention is to provide a peening unit for shell-molding machines that, by virtue of its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use.
- a system consisting of a combination of a peening unit and at least two shell-molding machines as defined in the appended claims, in which the peening unit comprises a suspended peening assembly supported by an articulated arm that is connected to the upper end of a fixed post, and in which the peening assembly comprises means for spraying beads at open and overturned molds of the shell-molding machines.
- the fixed post is arranged in fixed relation with respect to the shell-molding machines such that the peening assembly may be selectively arranged upon a selected positioning of the articulated arm at the open and overturned molds of the shell-molding machines without requiring the molds to be physically removed and transported from the machines.
- the peening unit for shell-molding machines comprises a peening unit, generally designated by the reference numeral 1, which is suspended, by means of a strut 2, to an articulated arm, generally designated by the reference numeral 3, which is connected at the upper end of a fixed post 5.
- the articulated arm 3 has a first portion 3a pivoted to the post 5 and a second portion 3b which is in turn pivoted to the portion 3a.
- the peening unit 1 at at least two shell-molding machines, generally designated by the reference numeral 10, without causing any hindrance in the surrounding region.
- the fixed post 5 can in fact be arranged to the side of a shell-molding machine, or it can optionally also be placed in the central region of the area in which the shell-molding machines 10 are arranged; said shell-molding machines are usually arranged around the casting furnace, generally designated by the reference numeral 11.
- the shell-molding machines 10 have molds 12 that can be opened and overturned so that they can be arranged frontally with respect to the shell-molding machine and directed outwards, so as to be easily engaged by the peening unit 1.
- the peening unit 1 is provided with an external body 20 which is closed, at the front, by sliding doors 21 movable with respect to each other in a guillotine-like fashion and provided with a portion made of flexible material, such as rubber or the like, to achieve a substantially hermetic coupling to the shaft 22 that supports the molds 12.
- a spray gun 23 is provided inside the body 20 and draws, by means of a duct 24, from the beads 25 placed on the hopper-like bottom of the body; the gun is actuated in a per se known manner by compressed air.
- a particularity resides in the fact that the gun 23 is moved by means of a lever system 26 that can be operated from the outside and is protected by a rubber hood 27.
- the body 20 is furthermore provided, in an upward region, with a transparent door 28 allowing the operator to view the spraying of the jet against the molds 12.
- Aspirators 30 are furthermore connected to the body 20 and create a suction current in the lower part of trapping columns 31 that are connected in an upward region, by means of grilles 32, to the internal chamber 33 formed by the body 20.
- the materials aspirated from the inside of the chamber are constituted by dust, residues, and beads, and follow a path along inclined planes 34 that produces a first separation between the beads and the dust; outlets 37 are furthermore provided and feed the beads back into the body 20, whereas the dust and the residues are fed, by means of the aspirators 30, into decantation units, generally designated by the reference numeral 40, which have a duct portion that is laterally adjacent to the filtering columns 31 and in practice separate the dust with a cyclone-like system.
- the peening units are arranged at the shell-molding machines without creating any hindrance in the surrounding region, since in practice the peening units are suspended and arrangeable at several stations where the molds to be cleaned are located.
- the particular structure of the peening unit furthermore allows to significantly reduce external scattering of dust and allows the operator to operate very quickly and easily, since the spray gun actuation means is accessible from the outside of the body assembly.
- the materials employed may be any according to the requirements.
Description
Claims (7)
- A system consisting of a combination of a peening unit and at least two shell-molding machines, the peening unit comprising a suspended peening assembly (1) supported by an articulated arm (3) that is connected to the upper end of a fixed post (5), said peening assembly comprising means (23) for spraying beads (25) at open and overturned molds (12) of the shell-molding machines (10), and said fixed post (5) being arranged in fixed relation with respect to said at least two shell-molding machines (10) such that the peening assembly (1) may be selectively arranged upon a selected positioning of said articulated arm (3) at said open and overturned molds (12) of said at least two shell-molding machines (10) without requiring said molds (12) to be physically removed and transported from said machines (10).
- The system according to claim 1, characterized in that said articulated arm (3) supports, at one end, said peening assembly (1) by means of a strut (2) and is pivoted to said post (5) at the other end.
- The system according to any one or more of the preceding claims, characterized in that said articulated arm (3) has a first portion (3a) pivoted to said post and a second portion (3b) pivoted to said first portion.
- The system according to any one or more of the preceding claims, characterized in that said peening assembly (1) has an external body (20) that is frontally closed by sliding doors (21) movable with respect to each other and provided with a portion made of flexible material for coupling to the mold supporting shaft (22).
- The system according to claim 4, characterized in that said spraying means comprise, inside said external body (20), a spray gun (23) that is provided with a duct (24) for drawing beads (25) located on the bottom of the body and can be operated by means of a lever system (26) accessible outside said body.
- The system according to any one or more of the preceding claims 4-5, characterized in that said external body (20) has an optically transparent door (28).
- The system according to any one or more of the preceding claims 5-6, characterized in that it comprises aspirators (30) that are connected to said external body (20) and are adapted to create a suction current at the lower part of trapping columns (31) which are connected in an upward region, by means of grilles (32), to the internal chamber of said body, said trapping columns having a path with inclined planes (34) and with outlets (37) for feeding the beads (25) back into said body, said aspirators being connected to decantation units (40) for dust elimination.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI941250A IT1270228B (en) | 1994-06-15 | 1994-06-15 | STRUCTURE OF BALLASTING MACHINE FOR SHELL MOLDING MACHINES |
ITMI941250 | 1994-06-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0688618A1 EP0688618A1 (en) | 1995-12-27 |
EP0688618B1 true EP0688618B1 (en) | 1998-11-25 |
Family
ID=11369118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95109358A Expired - Lifetime EP0688618B1 (en) | 1994-06-15 | 1995-06-16 | Peening unit for shell-molding machines |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0688618B1 (en) |
DE (1) | DE69506176T2 (en) |
IT (1) | IT1270228B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6574130B2 (en) | 2001-07-25 | 2003-06-03 | Nantero, Inc. | Hybrid circuit having nanotube electromechanical memory |
US6643165B2 (en) | 2001-07-25 | 2003-11-04 | Nantero, Inc. | Electromechanical memory having cell selection circuitry constructed with nanotube technology |
US6706402B2 (en) | 2001-07-25 | 2004-03-16 | Nantero, Inc. | Nanotube films and articles |
US6784028B2 (en) | 2001-12-28 | 2004-08-31 | Nantero, Inc. | Methods of making electromechanical three-trace junction devices |
US6835591B2 (en) | 2001-07-25 | 2004-12-28 | Nantero, Inc. | Methods of nanotube films and articles |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA792125B (en) * | 1978-05-23 | 1980-05-28 | Slag Reduction | Ingot moulds |
JPH03207550A (en) * | 1990-01-10 | 1991-09-10 | Minami Seiko Kk | Working machine for mold |
-
1994
- 1994-06-15 IT ITMI941250A patent/IT1270228B/en active IP Right Grant
-
1995
- 1995-06-16 EP EP95109358A patent/EP0688618B1/en not_active Expired - Lifetime
- 1995-06-16 DE DE69506176T patent/DE69506176T2/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6574130B2 (en) | 2001-07-25 | 2003-06-03 | Nantero, Inc. | Hybrid circuit having nanotube electromechanical memory |
US6643165B2 (en) | 2001-07-25 | 2003-11-04 | Nantero, Inc. | Electromechanical memory having cell selection circuitry constructed with nanotube technology |
US6706402B2 (en) | 2001-07-25 | 2004-03-16 | Nantero, Inc. | Nanotube films and articles |
US6836424B2 (en) | 2001-07-25 | 2004-12-28 | Nantero, Inc. | Hybrid circuit having nanotube electromechanical memory |
US6835591B2 (en) | 2001-07-25 | 2004-12-28 | Nantero, Inc. | Methods of nanotube films and articles |
US7745810B2 (en) | 2001-07-25 | 2010-06-29 | Nantero, Inc. | Nanotube films and articles |
US6784028B2 (en) | 2001-12-28 | 2004-08-31 | Nantero, Inc. | Methods of making electromechanical three-trace junction devices |
Also Published As
Publication number | Publication date |
---|---|
ITMI941250A1 (en) | 1995-12-15 |
DE69506176T2 (en) | 1999-06-10 |
EP0688618A1 (en) | 1995-12-27 |
ITMI941250A0 (en) | 1994-06-15 |
IT1270228B (en) | 1997-04-29 |
DE69506176D1 (en) | 1999-01-07 |
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