EP0302388B1 - Device for removing feeder heads and runners from a cast piece - Google Patents
Device for removing feeder heads and runners from a cast piece Download PDFInfo
- Publication number
- EP0302388B1 EP0302388B1 EP19880112203 EP88112203A EP0302388B1 EP 0302388 B1 EP0302388 B1 EP 0302388B1 EP 19880112203 EP19880112203 EP 19880112203 EP 88112203 A EP88112203 A EP 88112203A EP 0302388 B1 EP0302388 B1 EP 0302388B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wedge
- bodies
- runners
- bolts
- flange
- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
Definitions
- the invention relates to a device for removing feeders and sprues from a casting, a wedge being connected to a displaceable piston, the side surfaces of the wedge being covered by bodies which can be moved relative to one another, and these bodies being articulated via bolts to a flange of a linear motor.
- Such a device is known from AT-B-E 1976 or GB-A-21 72 227.
- Devices of this type are used in particular in foundries where an energy-saving separation of feeders and risers from the casting is desired. This separation is a common operation in the course of casting production. Such devices have been known in the stone industry for decades.
- the object of the present invention is to provide a portable device which is simple to manufacture, works effectively and is reliable even in rough operation. According to the invention, it is now proposed in the device mentioned at the outset that the bolts are guided in longitudinal openings in the flange.
- the inventive measures create a very simple device, the individual parts of which can be easily detached and exchanged, but which nevertheless provides a high level of operational reliability.
- By guiding bolts in longitudinal openings it is ensured that the body covering the side surfaces of the wedge moves in a simple movement when the wedge is moved outwards and thus the entire force is used to break off the feeders and sprues. If the bodies are formed in a U-shape, this results in easy manufacture and nevertheless high bending stiffness, which in turn improves operational safety.
- springs the length of which can be adjustable under certain circumstances, also makes it possible to easily adjust the contact force of the body on the side surfaces of the wedge.
- Fig.1 shows the device according to the invention in the idle state
- Fig.2 shows the Device according to the invention in use
- Figure 3 is a section AA of Figure 2.
- the device according to the invention consists of a linear motor 1, in which a piston 7 is arranged displaceably.
- the piston 7 carries a plunger 8 which is movably connected to a wedge 4.
- the wedge 4 can thus be brought into an operating position according to FIG.
- the side surfaces of the wedge 4 are at least partially covered by bodies 2.
- these bodies 2 are U-shaped and thus encompass the wedge 4.
- the bodies 2 are articulated via bolts 6 on a flange 9 of the linear motor.
- this flange 10 has longitudinal openings 5 in which the bolts 6 can slide.
- the bolts can be provided with rollers at their upper end, or a sliding block can be used.
- the axes of the longitudinal openings are at an angle ⁇ , which corresponds to half the apex angle of the wedge 4, or at a larger angle to the normal plane N of the longitudinal axis of the device.
- 2 retaining bolts are provided on the bodies, on which the ends of a spring 3 engage. This spring causes the body 2 to always bear against the side surfaces of the wedge 4 and that when the piston 7 moves back into its starting position, the body 2 also returns to its starting position.
- only a single spring is shown, but it is also possible to arrange a plurality of springs.
- the springs 3 can be replaced by other suitable means, such as hydraulics or pneumatic cylinders and the like.
- the special arrangement of the longitudinal openings 5 achieves a neutralization of the bending forces on the bodies 2 and the springs 3 ensure that the bodies 2 are always in contact with the side surfaces of the wedge 4, but nevertheless an immediate reaction to a movement of the wedge by a movement of the Body 2 is given to the outside. Because the bodies 2 are U-shaped, they can be easily manufactured and at the same time the bending rigidity of the working bodies 2 is increased.
- the device according to the invention can be produced very easily since only simple bodies and surfaces are used.
- the connection of the individual parts is simple and can be easily solved, so that an exchange of the individual parts is possible quickly. Nevertheless, a high level of operational safety is guaranteed, which is of great advantage particularly in the rough operation that prevails in foundries.
- By simply connecting the individual parts it is also possible to clean them quickly and easily and thus remove any dust and particles that may have penetrated between the individual parts.
Description
Die Erfindung betrifft eine Vorrichtung zum Entfernen von Speisern und Angüssen von einem Gußstück, wobei ein Keil mit einem verschiebbaren Kolben verbunden ist, die Seitenflächen des Keiles von relativ zueinander bewegbaren Körpern überdeckt sind und diese Körper über Bolzen an einen Flansch eines Linearmotors angelenkt sind.The invention relates to a device for removing feeders and sprues from a casting, a wedge being connected to a displaceable piston, the side surfaces of the wedge being covered by bodies which can be moved relative to one another, and these bodies being articulated via bolts to a flange of a linear motor.
Eine derartige Vorrichtung ist durch die AT-B-E 1976 bzw. GB-A-21 72 227 bekannt.Such a device is known from AT-B-E 1976 or GB-A-21 72 227.
Derartige Vorrichtungen finden insbesondere bei Gießereibetrieben Anwendung, wo eine energiesparende Abtrennung von Speisern und Steigern vom Gußstück erwünscht ist. Diese Trennung ist ein gebräuchlicher Arbeitsgang im Zuge der Gußstückfertigung. In der Steinindustrie sind solche Vorrichtungen seit Jahrzehnten bekannt.Devices of this type are used in particular in foundries where an energy-saving separation of feeders and risers from the casting is desired. This separation is a common operation in the course of casting production. Such devices have been known in the stone industry for decades.
Aufgabe der vorliegenden Erfindung ist die Schaffung einer tragbaren Einrichtung, die einfach herzustellen ist, wirkungsvoll arbeitet und auch im rauhen Betrieb zuverlässig ist. Erfindungsgemäß wird jetzt bei der eingangs erwähnten Vorrichtung vorgeschlagen, daß die Bolzen in Längsöffnungen des Flansches geführt sind.The object of the present invention is to provide a portable device which is simple to manufacture, works effectively and is reliable even in rough operation. According to the invention, it is now proposed in the device mentioned at the outset that the bolts are guided in longitudinal openings in the flange.
Durch die erfinderischen Maßnahmen ist eine sehr einfache Vorrichtung geschaffen, deren Einzelteile leicht voneinander gelöst und ausgetauscht werden können, bei der aber trotzdem eine hohe Betriebssicherheit gegeben ist. Durch die Führung von Bolzen in Längsöffnungen ist gewährleistet, daß die die Seitenflächen des Keiles abdeckenden Körper sich in einer einfachen Bewegung bei Bewegen des Keiles nach außen verschieben und somit die gesamte Kraft zum Abbrechen der Speiser und Angüsse verwendet wird. Bildet man die Körper U-förmig aus, so ergibt sich eine leichte Herstellbarkeit und trotzdem erhält man eine hohe Biegesteifigkeit, was wiederum der Betriebssicherheit zugute kommt.The inventive measures create a very simple device, the individual parts of which can be easily detached and exchanged, but which nevertheless provides a high level of operational reliability. By guiding bolts in longitudinal openings, it is ensured that the body covering the side surfaces of the wedge moves in a simple movement when the wedge is moved outwards and thus the entire force is used to break off the feeders and sprues. If the bodies are formed in a U-shape, this results in easy manufacture and nevertheless high bending stiffness, which in turn improves operational safety.
Auch die Verwendung von Federn, deren Länge unter Umständen einstellbar sein kann, gestattet es, auf einfache Weise die Anlagekraft der Körper an den Seitenflächen des Keiles einzustellen.The use of springs, the length of which can be adjustable under certain circumstances, also makes it possible to easily adjust the contact force of the body on the side surfaces of the wedge.
Die Erfindung wird nun anhand der Zeichnungen näher dargestellt. Fig.1 zeigt die erfindungsgemäße Vorrichtung im Ruhezustand, Fig.2 zeigt die erfindungsgemäße Vorrichtung im Einsatz und Fig.3 ist ein Schnitt A-A der Fig.2.The invention will now be illustrated with reference to the drawings. Fig.1 shows the device according to the invention in the idle state, Fig.2 shows the Device according to the invention in use and Figure 3 is a section AA of Figure 2.
Die erfindungsgemäße Vorrichtung besteht aus einem Linearmotor 1, in der ein Kolben 7 verschieblich angeordnet ist. Der Kolben 7 trägt einen Stößel 8, der beweglich mit einem Keil 4 verbunden ist. Bei Betätigung des Linearmotors 1 kann also der Keil 4 in eine Betriebsstellung gemäß Fig.2 gebracht werden. Die Seitenflächen des Keiles 4 werden zumindest teilweise von Körpern 2 abgedeckt. Wie man aus Fig.3 erkannen kann, sind diese Körper 2 U-förmig ausgebildet und umgreifen somit den Keil 4. An ihren Enden sind die Körper 2 über Bolzen 6 an einem Flansch 9 des Linearmotors angelenkt. Dieser Flansch 10 trägt bei dem hier dargestellten Ausführungsbeispiel Längsöffnungen 5, in denen die Bolzen 6 gleiten können. Um die Bewegung der Bolzen 6 in den Längsöffnungen 5 zu verbessern, können die Bolzen an ihrem oberen Ende mit Rollen versehen sein, oder aber man verwendet einen Gleitstein. Die Achsen der Längsöffnungen stehen unter einem Winkel α, der der Hälfte des Scheitelwinkels des Keiles 4 entspricht, oder unter einem größeren Winkel zur Normalebene N der Längsachse der Vorrichtung. Zusätzlich sind an den Körpern 2 Haltebolzen vorgesehen, an denen die Enden einer Feder 3 angreifen. Diese Feder bewirkt, daß die Körper 2 stets an den Seitenflächen des Keiles 4 anliegen und daß bei einer Rückbewegung des Kolbens 7 in seine Ausgangslage auch die Körper 2 in ihre Ausgangslage zurückkehren. In den Ausführungsbeispielen ist nur eine einzige Feder dargestellt, es ist jedoch möglich, auch mehrere Federn anzuordnen. Desgleichen können die Federn 3 durch andere geeignete Mittel, wie Hydraulik oder Pneumatikzylinder und dgl. ersetzt werden.The device according to the invention consists of a linear motor 1, in which a
Bei Betätigung des Linearmotors 1 wird der Keil 4 verschoben und die schalenförmig ausgebildeten Körper 2 werden von der Achse des Keiles und relativ zueinander wegbewegt. Es ergibt sich eine Verstärkung der Linearmotorkraft nach dem Prinzip der schiefen Ebene quer zur Achse des Keiles 4. Es können somit große Speiserquerschnitte mit geringem menschlichen Kraftaufwand abgebrochen werden. Durch besondere Wahl von Gußkanalprofilen ist eine Optimierung der Bruchlage und ein guter Schutz der Gußstücke möglich. Die Körper 2 können leicht ausgetauscht werden und man kann über Adapterstücke eine Anpassung der Vorrichtung an beliebige Abstände zwischen dem Gußstück und dem Speiser vornehmen. Durch die besondere Anordung der Längsöffnungen 5 erreicht man eine Neutralisation der Biegekräfte an den Körpern 2 und die Federn 3 gewährleisten, daß die Körper 2 stets an den Seitenflächen des Keiles 4 anliegen, trotzdem aber eine sofortige Reaktion auf eine Bewegung des Keiles durch eine Bewegung der Körper 2 nach außen gegeben ist. Dadurch daß die Körper 2 U-förmig ausgebildet sind, lassen sie sich leicht herstellen und gleichzeitig erhöht man die Biegesteifigkeit der Arbeitskörper 2.When the linear motor 1 is actuated, the
Die erfindungsgemäße Vorrichtung läßt sich sehr leicht herstellen, da nur einfache Körper und Flächen eingesetzt werden. Auch die Verbindung der einzelnen Teile ist einfach und kann leicht gelöst werden, so daß ein Austausch der einzelnen Teile rasch möglich ist. Trotzdem ist aber eine hohe Betriebssicherheit gewährleistet, was insbesondere bei dem rauhen Betrieb, wie er in Gießereibetrieben herrscht, von großem Vorteil ist. Durch die einfache Verbindung der einzelnen Teile ist es auch möglich, diese rasche und einfach zur reinigen und so eventuell zwischen den einzelnen Teilen eingedrungene Stäube und Partikelchen zu entfernen.The device according to the invention can be produced very easily since only simple bodies and surfaces are used. The connection of the individual parts is simple and can be easily solved, so that an exchange of the individual parts is possible quickly. Nevertheless, a high level of operational safety is guaranteed, which is of great advantage particularly in the rough operation that prevails in foundries. By simply connecting the individual parts, it is also possible to clean them quickly and easily and thus remove any dust and particles that may have penetrated between the individual parts.
In vielen Fällen ist es günstig, im Ruhezustand der vorrichtung den Keil über den Flansch zu ziehen, damit auch im Betriebszustand, also dann wenn der Keil sich in der Stellung gemäß Fig.2 befindet, für die Schalen 2 eine Gegenfläche vorhanden ist.In many cases it is expedient to pull the wedge over the flange in the idle state of the device, so that even in the operating state, that is to say when the wedge is in the position according to FIG. 2, there is a counter surface for the
Claims (4)
- An apparatus for removing feeders and runners from a casting, a wedge (4) being connected to a displaceable piston (7), the lateral surfaces of the wedge (4) being covered by bodies (2) adapted for movement in relation to one another, the said bodies (2) being articulated via bolts (6) on a flange (10) of a linear motor (1), characterised in that the bolts (6) are guided in longitudinal apertures (5) in the flange (10).
- An apparatus according to claim 1, characterised in that the axis of the longitudinal apertures (5) is substantially at right-angles to the lateral surfaces of the wedge (4).
- An apparatus according to claim 1 or 2, characerised in that in per se known manner the bodies (2) are maintained by pressure and/or traction means (3) so that they bear on the lateral faces of the wedge (4) and are held by at least one draw spring (3) the ends of which are anchored on the bodies (2).
- An apparatus according to one of claims 1 to 3, characterised in that the bodies (2) are of shell-shaped construction and engage around the wedge (4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1974/87 | 1987-08-04 | ||
AT197487A AT388320B (en) | 1987-08-04 | 1987-08-04 | DEVICE FOR REMOVING FOOD AND POURING FROM A CAST PIECE |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0302388A2 EP0302388A2 (en) | 1989-02-08 |
EP0302388A3 EP0302388A3 (en) | 1989-10-18 |
EP0302388B1 true EP0302388B1 (en) | 1992-09-02 |
Family
ID=3525081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880112203 Expired - Lifetime EP0302388B1 (en) | 1987-08-04 | 1988-07-28 | Device for removing feeder heads and runners from a cast piece |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0302388B1 (en) |
AT (1) | AT388320B (en) |
DE (1) | DE3874254D1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2328671B (en) * | 1997-04-18 | 1999-06-09 | Future Alignments Limited | A separating device |
DE69801831T2 (en) * | 1997-04-18 | 2002-05-29 | Future Alignments Ltd | spreading |
NL1011682C2 (en) * | 1999-03-26 | 2000-09-27 | Holmatro Ind Equip | Separation device for castings. |
GB0005121D0 (en) * | 2000-03-03 | 2000-04-26 | Future Alignments Limited | Separating device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT1976B (en) * | 1899-08-28 | 1900-08-25 | Eugene Forsman | |
FR2452988A1 (en) * | 1979-04-04 | 1980-10-31 | Fonderie Meca Ste Bretonne | HYDRAULIC CORNER DEMASSELOTTING DEVICE |
GB2172227B (en) * | 1985-03-14 | 1988-08-10 | Sermec Engineering Ltd | Hydraulic wedge unit |
-
1987
- 1987-08-04 AT AT197487A patent/AT388320B/en not_active IP Right Cessation
-
1988
- 1988-07-28 EP EP19880112203 patent/EP0302388B1/en not_active Expired - Lifetime
- 1988-07-28 DE DE8888112203T patent/DE3874254D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0302388A3 (en) | 1989-10-18 |
ATA197487A (en) | 1988-11-15 |
EP0302388A2 (en) | 1989-02-08 |
DE3874254D1 (en) | 1992-10-08 |
AT388320B (en) | 1989-06-12 |
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