EP0100944A2 - Feeding devices in an abrasive blasting machine - Google Patents

Feeding devices in an abrasive blasting machine Download PDF

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Publication number
EP0100944A2
EP0100944A2 EP83107193A EP83107193A EP0100944A2 EP 0100944 A2 EP0100944 A2 EP 0100944A2 EP 83107193 A EP83107193 A EP 83107193A EP 83107193 A EP83107193 A EP 83107193A EP 0100944 A2 EP0100944 A2 EP 0100944A2
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EP
European Patent Office
Prior art keywords
workpiece
axis
support
rotation
clamping
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Application number
EP83107193A
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German (de)
French (fr)
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EP0100944B1 (en
EP0100944A3 (en
EP0100944B2 (en
Inventor
Peter Brenner
Jindrich Fiala
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Georg Fischer AG
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Georg Fischer AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/083—Transfer or feeding devices; Accessories therefor

Definitions

  • the invention relates to a conveyor as characterized in the preamble of claim 1.
  • a corresponding conveying device has become known from the patent specification DE-C3- 22 12 487.
  • the workpieces e.g. Motor blocks are clamped between the rotatable drivers on the end face, which is achieved by the axially displaceable support yoke legs that can be clamped against the workpieces. Due to the required high clamping forces, the support yoke legs and the support yoke must be of a very stable design, and due to their axial displacement, very complex support yokes are required with large forces. In addition, it has been shown that only a limited part of the workpieces to be blasted can be held on the end face, or the drivers must be adapted to the workpieces, as a result of which continuous operation with different workpieces is not possible.
  • cylinder blocks and the associated cylinder head covers cannot be blasted without retrofitting the workpiece holder.
  • the object of the present invention is to provide a conveying device of the type mentioned at the beginning, by means of which workpieces of different shape and size can be transported through a blasting chamber of a centrifugal blasting machine in a continuous or intermittent and preferably automatic mode of operation, at the same time being uniform on all sides by a definable rotation of the workpieces Blasting effect and good emptying of the cavities arranged in the workpieces is achieved.
  • the workpiece receiving device as a workpiece support provided with a clamping device, it is possible to use the same device to transport workpieces of different shapes and sizes in rotation through a centrifugal blasting machine and to treat them uniformly on all sides with blasting media.
  • the support yoke 1 shows a workpiece carrier yoke 1 of a hanging conveyor 2, by means of which workpieces 3 are transported from a loading station through a centrifugal jet machine for the purpose of all-round blasting treatment to an unloading station.
  • the support yoke 1 is displaceable on a rail 5 by means of rollers 4 suspended and connected with a traction device 6, for example a chain.
  • a traction device 6 for example a chain.
  • each support yoke is equipped with its own travel drive.
  • the support yoke 1 has two opposite supports or support yoke legs 7, at the lower ends of which in bearings 8 there is rotatably mounted a workpiece holding device 9 provided with a workpiece support 10 and at least one clamping device 11.
  • a clamping device 9 is arranged on each of the two bearing parts 12 and can thus be rotated with them about the axis of rotation 13.
  • the workpiece support 10 is formed by a grate 14 which is easily exchangeably fastened in the bearing parts, so that an exchange in the event of wear or a support adapted to another workpiece family, e.g. a single rod for cylinder blocks is possible.
  • the clamping device 11 has clamping claws 16 which are arranged on a pivot lever 15 and which are pressed against the workpiece 3 by means of a force accumulator 18.
  • the pivot lever 15 is pivotally mounted on the bearing part 12 about an axis 17, wherein a prestressed tension spring 18, which forms the energy accumulator, acts on the pivot lever 15.
  • the tension spring 18 is advantageously arranged in an axial bore 19 of the bearing part 12, protected against blasting agents.
  • Compression springs such as disc spring assemblies can also be used be used if the position of the axis 17 to the point of application of the spring force on the lever is selected accordingly.
  • Piston-cylinder assemblies fed by a pressure accumulator with a pressure medium can also be used as energy stores.
  • the swivel lever 15 On an additional lever arm, the swivel lever 15 has an engagement surface 20, on which, according to arrow 21, an actuating device 22 acts on the loading or unloading station for lifting the clamping claw 16 from the workpiece 3.
  • the actuating device can be an electro-mechanically, hydraulically or pneumatically actuated plunger.
  • One of the two bearing parts 12 is operatively connected to a rotary drive 23, by means of which the workpiece is set in rotation about the axis of rotation 13 during the blasting treatment and subsequently for emptying the cavities.
  • the rotary drive can also be carried out by means of a drag chain, as described in DE-C3-22 12 487.
  • two smaller workpieces can be clamped by means of the two clamping devices 11 in addition to the shown clamping of a workpiece 3, an arrangement of the workpieces which is offset obliquely on the grate likewise enables their all-round blasting treatment.
  • FIGS. 2 and 3 show an embodiment variant in which the workpiece support is designed as an exchangeable pallet 24.
  • the pallet 24 has in the pivot pin 13 arranged on the axis of rotation 13, which, lying in corresponding recesses 26 of the two bearing parts 12a and 12b, connect the pallet to the support yoke 1 during transport.
  • the two support yoke legs 7a and 7b can be displaced from and to one another in the direction of the axis of rotation 13 by means of a displacement device 26 - preferably a hydraulically or pneumatically actuatable cylinder, whereby the pallet 24 is picked up by the support yoke at the loading station and deposited again at the unloading station.
  • a displacement device 26 preferably a hydraulically or pneumatically actuatable cylinder
  • FIG 3 shows the pallet 24 with the workpiece 3 on a lifting table 27 at the loading or unloading station, the yoke legs 7a and 7b having moved apart and the clamping device 11 being opened by means of the actuating device 22.
  • only one tensioning device 11 is arranged on the bearing part 12b, the pivoting lever 15 using a compression spring 18a - e.g. a plate spring package - can be pressed against the workpiece 3.
  • the rotary drive 23 is operatively connected to the other bearing part 12a, with the pallet 24 and the clamping device 11 being driven rotationally by e.g. the driving pin 25 is designed as a square.
  • a good blasting effect on the workpiece surfaces is achieved when the workpiece makes a wobble movement. This is achieved when the support plane for the workpiece on the grate 14 or the pallet 24 forms an acute angle to the axis of rotation 13.
  • FIG. 4 shows a workpiece holding device 9, the workpiece support 10 of which can be adjusted for workpieces 3 of different heights.
  • the workpiece support 10 has rods 31 which are articulated on pivotable levers 30 and which can be brought into different distances 33 from the axis of rotation 13 by pivoting the lever 30 about an axis 32 running transversely to the axis of rotation 13. If only two different distances 33 are required, a lower and an upper position of the rods 31 can be defined by end stops 34 and 35, the desired position in the loading and unloading station being controlled by an actuating device, e.g. a piston-cylinder unit 36 is adjustable between unloading and loading, this being e.g. can be done automatically according to a predetermined program.
  • an actuating device e.g. a piston-cylinder unit 36 is adjustable between unloading and loading, this being e.g. can be done automatically according to a predetermined program.
  • FIG. 5 and 6 show an embodiment variant of the adjustable workpiece support 10, the axes 32a of levers 30a being arranged parallel to the axis of rotation 13.
  • a continuous adjustment of the distance 35 between the axis of rotation 13 and the rods 31a can be e.g. by means of a built-in worm drive 37, which in the loading and unloading station with a drive, e.g. an electric motor 38 can be coupled.
  • Such an actuator which the workpiece support 10 within a given area can be adjusted to any distance from the axis of rotation 13 can also be used in the embodiment variant shown in FIG. 4.
  • FIG. 7 shows an embodiment variant of the conveyor device, which is designed as a drum conveyor 50 of a multi-station centrifugal jet machine.
  • the drum conveyor 50 rotating about an axis 51 has two side walls 52, which at the same time form the carriers 7 of a plurality of workpiece holding devices 9 arranged circumferentially distributed.
  • the workpiece holding devices 9 are conveyed from a loading and unloading station into one or more blasting chambers 54 of a housing 55 of the blasting machine by rotating the drum conveyor 50 by means of a drive 53.
  • the workpiece holding devices 9 likewise have a workpiece support 10, clamping devices 11 and bearing parts 12 and can each be rotated about an axis of rotation 13 by means of a rotary drive 23.
  • the workpieces 3 are held by means of clamping claws 16, which are supported by energy stores such as e.g. Springs are pressed against the workpiece. In the loading and unloading station, these are lifted off the workpiece by means of an actuating device.
  • energy stores such as e.g. Springs
  • the workpiece holding devices described are also used in other conveying devices, such as applicable to transportable wagons on rails or rolling cages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

Ein Hängeförderer (2) weist Werkstück-Tragjoche (1) auf, an welche ein als Rost (14) ausgebildete Werkstück-Auflage (10) angeordnet ist. Der Rost (14) ist mittels Lagerteilen (12) in den beiden Schenkeln (7) des Tragjoches (1) gelagert und mittels eines Antriebes (23) in Rotation versetzbar. Das Werkstück (3) wird mittels der an den Lagerteilen (12) angeordneten Spannvorrichtungen (11) auf dem Rost festgespannt, wobei deren Spannpratze (11) vorzugsweise mittels Federn (18) gegen das Werkstück (3) gedrückt werden. In der Be- bzw. Entladestation können die Spannpratzen mittels einer Betätigungseinrichtung vom Werkstück gelöst werden.

Figure imgaf001
A overhead conveyor (2) has workpiece support yokes (1) on which a workpiece support (10) designed as a grate (14) is arranged. The grate (14) is mounted in the two legs (7) of the support yoke (1) by means of bearing parts (12) and can be set in rotation by means of a drive (23). The workpiece (3) is clamped onto the grate by means of the clamping devices (11) arranged on the bearing parts (12), the clamping claw (11) preferably being pressed against the workpiece (3) by means of springs (18). In the loading or unloading station, the clamping claws can be released from the workpiece using an actuating device.
Figure imgaf001

Description

Die Erfindung betrifft eine Fördereinrichtung wie sie im Oberbegriff von Anspruch 1 gekennzeichnet ist.The invention relates to a conveyor as characterized in the preamble of claim 1.

Eine entsprechende Fördereinrichtung ist durch die Patentschrift DE-C3- 22 12 487 bekanntgeworden.A corresponding conveying device has become known from the patent specification DE-C3- 22 12 487.

Die Werkstücke, wie z.B. Motorblöcke, werden zwischen drehbaren Mitnehmern stirnseitig gespannt gehalten, was durch die axial verschiebbaren und gegen die Werkstücke spannbaren Tragjochschenkel erreicht wird. Aufgrund der erforderlichen hohen Spannkräfte müssen die Tragjochschenkel sowie das Tragjoch sehr stabil ausgebildet sein, wobei durch deren axiale Verschiebung bei grossen Kräften sehr aufwendige Tragjoche erforderlich sind. Ausserdem hat es sich gezeigt, dass nur ein begrenzter Teil von zu strahlenden Werkstücken stirnseitig gehalten werden können, bzw. die Mitnehmer müssen an die Werkstücke angepasst werden, wodurch ein kontinuierlicher Betrieb bei unterschiedlichen Werkstücken nicht möglich ist.The workpieces, e.g. Motor blocks are clamped between the rotatable drivers on the end face, which is achieved by the axially displaceable support yoke legs that can be clamped against the workpieces. Due to the required high clamping forces, the support yoke legs and the support yoke must be of a very stable design, and due to their axial displacement, very complex support yokes are required with large forces. In addition, it has been shown that only a limited part of the workpieces to be blasted can be held on the end face, or the drivers must be adapted to the workpieces, as a result of which continuous operation with different workpieces is not possible.

Zum Beispiel können Zylinderblöcke und die dazugehörigen Zylinderkopfdeckel nicht ohne Umrüsten der Werkstück-Aufnahmeeinrichtung strahlbehandelt werden.For example, cylinder blocks and the associated cylinder head covers cannot be blasted without retrofitting the workpiece holder.

Aufgabe der vorliegenden Erfindung ist die Schaffung einer Fördereinrichtung der eingangs genannten Art, mittels welcher bei einer kontinuierlichen bzw. taktweisen und vorzugsweise automatischen Arbeitsweise Werkstücke unterschiedlicher Form und Grösse durch eine Strahlkammer einer Schleuderstrahlmaschine transportierbar sind, wobei gleichzeitig durch eine bestimmbare Drehung der Werkstücke eine allseitig gleichmässige Strahlwirkung und eine gute Entleerung der in den Werkstücken angeordneten Hohlräumen erreicht wird.The object of the present invention is to provide a conveying device of the type mentioned at the beginning, by means of which workpieces of different shape and size can be transported through a blasting chamber of a centrifugal blasting machine in a continuous or intermittent and preferably automatic mode of operation, at the same time being uniform on all sides by a definable rotation of the workpieces Blasting effect and good emptying of the cavities arranged in the workpieces is achieved.

Erfindungsgemäss wird dies durch die im Anspruch 1 angeführten kennzeichnenden Merkmale gelöst.According to the invention, this is solved by the characterizing features stated in claim 1.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen gekennzeichnet.Further advantageous embodiments of the invention are characterized in the dependent claims.

Durch die Ausbildung der Werkstückaufnahmeeinrichtung als eine mit einer Spanneinrichtung versehenen Werkstück-Auflage ist es möglich, mit der gleichen Einrichtung Werkstücke unterschiedlicher Gestalt und Grösse rotierend durch eine Schleuderstrahlmaschine zu transportieren und sie allseitig gleichmässig mit Strahlmittel zu behandeln.By designing the workpiece receiving device as a workpiece support provided with a clamping device, it is possible to use the same device to transport workpieces of different shapes and sizes in rotation through a centrifugal blasting machine and to treat them uniformly on all sides with blasting media.

Die Erfindung ist in Ausführungsbeispielen in den beiliegenden Zeichnungen vereinfacht dargestellt und nachfolgend beschrieben.The invention is shown in simplified form in exemplary embodiments in the accompanying drawings and described below.

Es zeigen:

  • Fig. 1 eine Teil-Seitenansicht, teilweise im Schnitt, eines als Hängeförderer ausgebildeten Fördereinrichtung mit einer Werkstück-Aufnahmevorrichtung,
  • Fig..2 eine Ausführungsvariante von Fig. l,
  • Fig. 3 eine Teilansicht von Fig. 2 in einer anderen Arbeitsposition,
  • Fig. 4 eine Ausführungsvariante der Werkstück-Aufnahmevorrichtung von Fig. l in einer Teilansicht,
  • Fig. 5 eine weitere Ausführungsvariante von Fig. 4 in einer Teilansicht,
  • Fig. 6 einen Schnitt entlang der Linie VI - VI von Fig. 5, und
  • Fig. 7 einen Schnitt durch eine Schleuderstrahlmaschine mit einer als Trommel ausgebildeten Fördereinrichtung in vereinfachter Darstellung.
Show it:
  • 1 is a partial side view, partially in section, of a conveyor device designed as a hanging conveyor with a workpiece holding device,
  • 2 shows a variant of FIG. 1,
  • 3 is a partial view of FIG. 2 in another working position,
  • 4 shows a variant of the workpiece holding device from FIG. 1 in a partial view,
  • 5 shows a further embodiment variant of FIG. 4 in a partial view,
  • Fig. 6 is a section along the line VI - VI of Fig. 5, and
  • Fig. 7 shows a section through a centrifugal jet machine with a conveyor designed as a drum in a simplified representation.

Fig. 1 zeigt ein Werkstück-Tragjoch 1 eines Hänge-Förderers 2, mittels welchem Werkstücke 3 von einer Beladestation durch eine Schleuderstrahlmaschine zwecks allseitiger Strahlbehandlung zu einer Entladestation transportiert werden. Das Tragjoch 1 ist mittels Rollen 4 auf einer Schiene 5 verschiebbar aufgehängt und mit einem Zugmittel 6 z.B. einer Kette verbunden. Es besteht auch die Möglichkeit, dass jedes Tragjoch mit einem eigenen Fahrantrieb ausgerüstet ist.1 shows a workpiece carrier yoke 1 of a hanging conveyor 2, by means of which workpieces 3 are transported from a loading station through a centrifugal jet machine for the purpose of all-round blasting treatment to an unloading station. The support yoke 1 is displaceable on a rail 5 by means of rollers 4 suspended and connected with a traction device 6, for example a chain. There is also the possibility that each support yoke is equipped with its own travel drive.

Das Tragjoch 1 weist zwei gegenüberliegende Träger bzw. Tragjochschenkel 7 auf, an deren unteren Enden in Lagern 8 eine, mit einer Werkstück-Auflage 10 und mindestens einer Spannvorrichtung 11 versehene Werkstück-Aufnahmevorrichtung 9 drehbar gelagert ist.The support yoke 1 has two opposite supports or support yoke legs 7, at the lower ends of which in bearings 8 there is rotatably mounted a workpiece holding device 9 provided with a workpiece support 10 and at least one clamping device 11.

In der in Fig. 1 gezeigten Ausführungsvariante ist je eine Spannvorrichtung 9 an den beiden Lagerteilen 12 angeordnet und somit mit diesen um die Drehachse 13 drehbar. Die Werkstückauflage 10 wird durch einen Rost 14 gebildet, welcher leicht auswechselbar in den Lagerteilen befestigt ist, damit ein Austausch bei Verschleiss oder gegen eine andere Werkstückfamilie angepasste Auflage wie z.B. eine Einzelstange für Zylinderblöcke, möglich ist.In the embodiment variant shown in FIG. 1, a clamping device 9 is arranged on each of the two bearing parts 12 and can thus be rotated with them about the axis of rotation 13. The workpiece support 10 is formed by a grate 14 which is easily exchangeably fastened in the bearing parts, so that an exchange in the event of wear or a support adapted to another workpiece family, e.g. a single rod for cylinder blocks is possible.

Die Spannvorrichtung 11 weist an einem Schwenkhebel 15 angeordnete Spannpratze 16 auf, welche mittels eines Kraftspeichers 18 erzeugten Spannkraft gegen das Werkstück 3 gedrückt wird. Der Schwenkhebel 15 ist am Lagerteil 12 um eine Achse 17 schwenkbar gelagert wobei eine, den Kraftspeicher bildende vorgespannte Zugfeder 18 am Schwenkhebel 15 angreift. Die Zugfeder 18 ist vorteilhafterweise gegen Strahlmittel geschützt in einer axialen Bohrung 19 des Lagerteiles 12 angeordnet.The clamping device 11 has clamping claws 16 which are arranged on a pivot lever 15 and which are pressed against the workpiece 3 by means of a force accumulator 18. The pivot lever 15 is pivotally mounted on the bearing part 12 about an axis 17, wherein a prestressed tension spring 18, which forms the energy accumulator, acts on the pivot lever 15. The tension spring 18 is advantageously arranged in an axial bore 19 of the bearing part 12, protected against blasting agents.

Es können auch Druckfedern, wie z.B. Tellerfederpakete verwendet werden, wenn die Lage der Achse 17 zum Angriffspunkt der Federkraft am Hebel entsprechend gewählt wird. Als Kraftspeicher können auch von einem Druckspeicher mit einem Druckmedium gespeiste Kolben-Zylinder-Aggregate verwendet werden.Compression springs such as disc spring assemblies can also be used be used if the position of the axis 17 to the point of application of the spring force on the lever is selected accordingly. Piston-cylinder assemblies fed by a pressure accumulator with a pressure medium can also be used as energy stores.

Der Schwenkhebel 15 weist an einem zusätzlichen Hebelarm eine Angriffsfläche 20 auf, an welcher gemäss Pfeil 21 an der Be- bzw. Entladestation eine Betätigungseinrichtung 22 zum Abheben der Spannpratze 16 vom Werkstück 3 angreift.On an additional lever arm, the swivel lever 15 has an engagement surface 20, on which, according to arrow 21, an actuating device 22 acts on the loading or unloading station for lifting the clamping claw 16 from the workpiece 3.

Die Betätigungseinrichtung kann ein elektro-mechanisch, bzw. hydraulisch oder pneumatisch betätigbarer Stössel sein.The actuating device can be an electro-mechanically, hydraulically or pneumatically actuated plunger.

Einer der beiden Lagerteile 12 ist mit einem Drehantrieb 23 wirkverbunden, mittels welchem das Werkstück während der Strahlbehandlung und anschliessend zum Entleeren der Hohlräume in Rotation um die Drehachse 13 versetzt wird. Der Rotationsantrieb kann auch mittels einer Schleppkette,wie in der DE-C3- 22 12 487 beschrieben erfolgen. Mit den in Fig. 1 gezeigten Ausführungsvariante können mittels den beiden Spannvorrichtungen 11 neben der gezeigten Spannung eines Werkstückes 3 auch zwei kleinere Werkstücke gespannt werden, wobei eine auf dem Rost zueinander schräg versetzte Anordnung der Werkstücke ebenfalls deren allseitige Strahlbehandlung ermöglicht.One of the two bearing parts 12 is operatively connected to a rotary drive 23, by means of which the workpiece is set in rotation about the axis of rotation 13 during the blasting treatment and subsequently for emptying the cavities. The rotary drive can also be carried out by means of a drag chain, as described in DE-C3-22 12 487. With the embodiment variant shown in FIG. 1, two smaller workpieces can be clamped by means of the two clamping devices 11 in addition to the shown clamping of a workpiece 3, an arrangement of the workpieces which is offset obliquely on the grate likewise enables their all-round blasting treatment.

Die Fig. 2 und 3 zeigen eine Ausführungsvariante, bei welcher die Werkstück-Auflage als auswechselbare Palette 24 ausgebildet ist. Die Palette 24 weist in der Drehachse 13 angeordnete Mitnahme-Zapfen 25 auf, welche in entsprechenden Ausnehmungen 26 der beiden Lagerteile 12a und 12b liegend während dem Transport die Palette mit dem Tragjoch 1 verbinden.2 and 3 show an embodiment variant in which the workpiece support is designed as an exchangeable pallet 24. The pallet 24 has in the pivot pin 13 arranged on the axis of rotation 13, which, lying in corresponding recesses 26 of the two bearing parts 12a and 12b, connect the pallet to the support yoke 1 during transport.

Die beiden Tragjochschenkel 7a und 7b sind mittels einer Verschiebeeinrichtung 26 - vorzugsweise ein hydraulisch oder pneumatisch beaufschlagbarer Zylinder - von- und zueinander in Richtung der Drehachse 13 verschiebbar, wodurch die Palette 24 an der Beladestation vom Tragjoch aufgenommen und an der Entladestation wieder abgelegt wird.The two support yoke legs 7a and 7b can be displaced from and to one another in the direction of the axis of rotation 13 by means of a displacement device 26 - preferably a hydraulically or pneumatically actuatable cylinder, whereby the pallet 24 is picked up by the support yoke at the loading station and deposited again at the unloading station.

Fig. 3 zeigt die Palette 24 mit dem Werkstück 3 auf einem Hubtisch 27 an der Be- oder Entladestation wobei die Tragjochschenkel 7a und 7b auseinandergefahren sind und die Spannvorrichtung 11 mittels der Betätigungseinrichtung 22 geöffnet ist.3 shows the pallet 24 with the workpiece 3 on a lifting table 27 at the loading or unloading station, the yoke legs 7a and 7b having moved apart and the clamping device 11 being opened by means of the actuating device 22.

Bei der in den Fig. 2 und 3 gezeigten Ausführungsvariante ist nur eine Spannvorrichtung 11 am Lagerteil 12b angeordnet, wobei der Schwenkhebel 15 mittels einer Druckfeder 18a - z.B. ein Tellerfederpaket - gegen das Werkstück 3 drückbar ist. Der Drehantrieb 23 ist mit dem anderen Lagerteil 12a wirkverbunden wobei eine Drehmitnahme der Palette 24 und der Spannvorrichtung 11 durch z.B. eine Ausbildung der Mitnahmezapfen 25 als Vierkant erfolgt.In the embodiment variant shown in FIGS. 2 and 3, only one tensioning device 11 is arranged on the bearing part 12b, the pivoting lever 15 using a compression spring 18a - e.g. a plate spring package - can be pressed against the workpiece 3. The rotary drive 23 is operatively connected to the other bearing part 12a, with the pallet 24 and the clamping device 11 being driven rotationally by e.g. the driving pin 25 is designed as a square.

Eine gute Strahlwirkung an den Werkstückoberflächen wird dann erreicht, wenn das Werkstück beim Drehen eine Taumelbewegung macht. Dies wird dann erreicht, wenn die Auflage-Ebene für das Werkstück am Rost 14 bzw. der Palette 24 zu der Drehachse 13 einen spitzen Winkel bildet.A good blasting effect on the workpiece surfaces is achieved when the workpiece makes a wobble movement. This is achieved when the support plane for the workpiece on the grate 14 or the pallet 24 forms an acute angle to the axis of rotation 13.

Die Fig. 4 zeigt eine Werkstück-Aufnahmevorrichtung 9, deren Werkstückauflage 10 für unterschiedlich hohe Werkstücke 3 verstellbar ist.4 shows a workpiece holding device 9, the workpiece support 10 of which can be adjusted for workpieces 3 of different heights.

Die Werkstückauflage 10 weist an schwenkbaren Hebeln 30 gelenkig befestigte Stangen 31, welche durch verschwenken der Hebel 30 um eine, quer zur Drehachse 13 verlaufende Achse 32 in unterschiedliche Distanzen 33 zur Drehachse 13 bringbar sind. Sind nur zwei verschiedene Distanzen 33 erforderlich so kann eine untere und eine obere Lage der Stangen 31 durch Endanschläge 34 und 35 festgelegt werden, wobei die gewünschte Lage in der Be- bzw. Entladestation durch eine Betätigungseinrichtung wie z.B. einer KolbenZylindereinheit 36 zwischen dem Ent- und Beladen einstellbar ist, wobei dies z.B. entsprechend einem vorgegebenen Programm automatisch erfolgen kann.The workpiece support 10 has rods 31 which are articulated on pivotable levers 30 and which can be brought into different distances 33 from the axis of rotation 13 by pivoting the lever 30 about an axis 32 running transversely to the axis of rotation 13. If only two different distances 33 are required, a lower and an upper position of the rods 31 can be defined by end stops 34 and 35, the desired position in the loading and unloading station being controlled by an actuating device, e.g. a piston-cylinder unit 36 is adjustable between unloading and loading, this being e.g. can be done automatically according to a predetermined program.

Die Fig. 5 und 6 zeigen eine Ausführungsvariante der verstellbaren Werkstückauflage 10, wobei die Achsen 32a von Hebeln 30a parallel zur Drehachse 13 angeordnet sind. Eine stufenlose Verstellung der Distanz 35 zwischen der Drehachse 13 und den Stangen 31a kann hierbei z.B. mittels eines eingebauten Schneckentriebes 37, welcher in der Be- und Entladestation mit einem Antrieb, z.B. einem Elektromotor 38 kuppelbar ist, erfolgen.5 and 6 show an embodiment variant of the adjustable workpiece support 10, the axes 32a of levers 30a being arranged parallel to the axis of rotation 13. A continuous adjustment of the distance 35 between the axis of rotation 13 and the rods 31a can be e.g. by means of a built-in worm drive 37, which in the loading and unloading station with a drive, e.g. an electric motor 38 can be coupled.

Eine derartige Betätigungseinrichtung, welche die Werkstückauflage 10 innerhalb einem gegebenen Bereich in beliebige Distanzen zur Drehachse 13 verstellen kann ist auch bei der in Fig. 4 gezeigten Ausführungsvariante anwendbar.Such an actuator, which the workpiece support 10 within a given area can be adjusted to any distance from the axis of rotation 13 can also be used in the embodiment variant shown in FIG. 4.

Fig. 7 zeigt eine Ausführungsvariante der Fördereinrichtung, welche als Trommelförderer 50 einer Mehrstationenschleuderstrahlmaschine ausgebildet ist. Der um eine Achse 51 rotierende Trommelförderer 50 weist zwei Seitenwände 52 auf, welche gleichzeitig die Träger 7 mehrere umfangsmässig verteilt angeordneter Werkstückaufnahmeeinrichtungen 9 bilden. Die Werkstückaufnahmeeinrichtungen 9 werden durch taktweises Drehen des Trommelförderers 50 mittels eines Antriebes 53 von einer Be- und Entladestation in eine oder mehrere Strahlkammern 54 eines Gehäuses 55 der Strahlmaschine befördert. Die Werkstückaufnahmeeinrichtungen 9 weisen ebenfalls eine Werkstückauflage 10, Spannvorrichtungen 11 und Lagerteile 12 auf und sind mittels jeweils eines Drehantriebes 23 um eine Drehachse 13 rotierbar.FIG. 7 shows an embodiment variant of the conveyor device, which is designed as a drum conveyor 50 of a multi-station centrifugal jet machine. The drum conveyor 50 rotating about an axis 51 has two side walls 52, which at the same time form the carriers 7 of a plurality of workpiece holding devices 9 arranged circumferentially distributed. The workpiece holding devices 9 are conveyed from a loading and unloading station into one or more blasting chambers 54 of a housing 55 of the blasting machine by rotating the drum conveyor 50 by means of a drive 53. The workpiece holding devices 9 likewise have a workpiece support 10, clamping devices 11 and bearing parts 12 and can each be rotated about an axis of rotation 13 by means of a rotary drive 23.

Die Werkstücke 3 werden wie bereits beschrieben mittels Spannpratzen 16 gehalten, welche durch Kraftspeicher wie z.B. Federn gegen das Werkstück gedrückt werden. In der Be- und Entladestation werden diese mittels einer Betätigungseinrichtung vom Werkstück abgehoben.As already described, the workpieces 3 are held by means of clamping claws 16, which are supported by energy stores such as e.g. Springs are pressed against the workpiece. In the loading and unloading station, these are lifted off the workpiece by means of an actuating device.

Die beschriebenen Werkstückaufnahmeeinrichtungen sind auch noch bei anderen Fördereinrichtungen, wie z.B. bei auf Schienen fahrbaren Transportwagen oder bei rollenden Käfigen anwendbar.The workpiece holding devices described are also used in other conveying devices, such as applicable to transportable wagons on rails or rolling cages.

Claims (17)

1. Fördereinrichtung für Zylinderblöcke oder ähnliche Werkstücke durch mindestens eine Strahlkammer einer Schleuderstrahlmaschine mit von einer Bezu einer Entladestation transportierbaren, rotierenden Werkstück-Aufnahmevorrichtungen, dadurch gekennzeichnet, dass jede Werkstück-Aufnahmevorrichtung (9) eine in zwei gegenüberliegenden Trägern (7, 7a, 7b) um eine Drehachse (13) drehbar gelagerte und die beiden Träger verbindende Werkstück-Auflage (10) aufweist, an welcher mindestens eine, das oder die Werkstücke (3) haltende Spannvorrichtung (11) angeordnet ist.1. Conveying device for cylinder blocks or similar workpieces through at least one blasting chamber of a centrifugal blasting machine with rotating workpiece holding devices that can be transported from an unloading station, characterized in that each workpiece holding device (9) has one in two opposite carriers (7, 7a, 7b). Has a workpiece support (10) rotatably mounted about an axis of rotation (13) and connecting the two supports, on which at least one clamping device (11) holding the workpiece (s) (3) is arranged. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Spannvorrichtung (11) mindestens eine mittels eines Kraftspeichers (18, 18a) spannende und an einem Schwenkhebel (15) angeordnete Spannpratze (16) aufweist.2. Device according to claim 1, characterized in that the tensioning device (11) has at least one tensioning claw (16) which is tensioning by means of an energy store (18, 18a) and is arranged on a swivel lever (15). 3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass am Schwenkhebel (15) mindestens eine Angriffsfläche (20) angeordnet ist, an welcher an den Be- und Entladestationen eine Betätigungseinrichtung (22) zum Abheben der Spannpratze (16) angreift.3. Device according to claim 2, characterized in that on the pivot lever (15) at least one engagement surface (20) is arranged, on which an actuating device (22) for lifting the clamping claw (16) engages the loading and unloading stations. 4. Einrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Betätigungseinrichtung (22) einen elektro-mechanisch, bzw. hydraulisch bzw. pneumatisch betätigbarer Stössel aufweist.4. Device according to claim 3, characterized in that the actuating device (22) has an electro-mechanical, or hydraulically or pneumatically actuated plunger. 5. Einrichtung nach einem der Ansprüche 2 bis 3, dadurch gekennzeichnet, dass der Kraftspeicher (18) eine Feder (18, 18a) ist, welche an dem Schwenkhebel (15) angreift.5. Device according to one of claims 2 to 3, characterized in that the energy accumulator (18) is a spring (18, 18a) which acts on the pivot lever (15). 6. Einrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mindestens eine Auflagestange (10) an ihren beiden Enden an den in den Trägern (7, 7a, 7b) drehbar gelagerten Lagerteilen (12, 12a, 12b) leicht auswechselbar befestigt ist.6. Device according to one of claims 1 to 5, characterized in that at least one support rod (10) at its two ends on the in the supports (7, 7a, 7b) rotatably mounted bearing parts (12, 12a, 12b) easily replaceable attached is. 7. Einrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass mindestens ein Lagerteil (12, 12a) mit dem an einem Träger (7) angeordneten Drehantrieb (23) wirkverbunden ist und dass die Spannvorrichtung (11) bzw. Spannvorrichtungen an einem oder an beiden Lagerteilen (12, 12a, 12b) angeordnet sind.7. Device according to one of claims 1 to 6, characterized in that at least one bearing part (12, 12a) is operatively connected to the rotary drive (23) arranged on a carrier (7) and that the clamping device (11) or clamping devices on one or are arranged on both bearing parts (12, 12a, 12b). 8. Einrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Werkstück-Auflage (10) einen aus zwei oder mehreren Stangen gebildeten Rost (14) aufweist.8. Device according to one of claims 1 to 7, characterized in that the workpiece support (10) has a grate (14) formed from two or more rods. 9. Einrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Rost (14) als getrennte Palette (24) ausgebildet ist, welche in den Be- und Entladestationen durch eine axiale Bewegung der Träger (7a, 7b) erfassbar bzw. ablegbar ist.9. Device according to claim 8, characterized in that the grate (14) is designed as a separate pallet (24) which can be detected or deposited in the loading and unloading stations by an axial movement of the carrier (7a, 7b). 10. Einrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Auflage-Ebene des Rostes (14) bzw. der Palette (24) zu der Drehachse (13) der Werkstück-Auflage (10) einen spitzen Winkel bildet.10. Device according to one of claims 1 to 9, characterized in that the support plane of the grate (14) or the pallet (24) to the axis of rotation (13) of the workpiece support (10) forms an acute angle. 11. Einrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Werkstück-Auflage (10) mit einer einstellbaren Distanz (33) zur Drehachse (13) angeordnet ist.11. Device according to one of claims 1 to 9, characterized in that the workpiece support (10) with an adjustable distance (33) to the axis of rotation (13) is arranged. 12. Einrichtung nach Anspruch 17, dadurch gekennzeichnet, dass die als Stangen (31, 31a) ausgebildete Werkstück-Auflage (10) an um Achsen (32, 32a) schwenkbaren Hebeln (30, 30a) befestigt sind.12. The device according to claim 17, characterized in that the workpiece support (10) designed as rods (31, 31a) are attached to levers (30, 30a) which can be pivoted about axes (32, 32a). 13. Einrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Achsen (32a) parallel zur Drehachse (13) verlaufen.13. Device according to claim 12, characterized in that the axes (32a) run parallel to the axis of rotation (13). 14. Einrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Achsen (32) quer zur Drehachse (13) verlaufen.14. Device according to claim 12, characterized in that the axes (32) extend transversely to the axis of rotation (13). 15. Einrichtung nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass die Schwenkhebel (30, 30a) an den Be- oder Entladestationen mittels einer angreifbaren Betätigungseinrichtung (36, 38) verschwenkbar sind.15. Device according to one of claims 12 to 14, characterized in that the pivot levers (30, 30a) at the loading or unloading stations by means of an actuatable device (36, 38) which can be attacked can be pivoted. 16. Einrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Fördereinrichtung ein Hängeförderer (2) ist und die Werkstück-aufnahmevorrichtung (9) an einem Tragjoch (1) mit zwei Tragjochschenkeln (7, 7a, 7b) angeordnet ist.16. Device according to one of claims 1 to 11, characterized in that the conveying device is a suspended conveyor (2) and the workpiece receiving device (9) is arranged on a support yoke (1) with two support yoke legs (7, 7a, 7b). 17. Einrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Fördereinrichtung ein um eine Achse (51) rotierender Trommelförderer (50) ist, wobei die beiden Träger (7) durch die Seitenwände (52) der Trommel gebildet sind.17. Device according to one of claims 1 to 11, characterized in that the conveying device is a drum conveyor (50) rotating about an axis (51), the two carriers (7) being formed by the side walls (52) of the drum.
EP19830107193 1982-08-16 1983-07-22 Feeding devices in an abrasive blasting machine Expired - Lifetime EP0100944B2 (en)

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CH490482 1982-08-16
CH4904/82 1982-08-16

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EP0100944A2 true EP0100944A2 (en) 1984-02-22
EP0100944A3 EP0100944A3 (en) 1985-10-23
EP0100944B1 EP0100944B1 (en) 1987-10-14
EP0100944B2 EP0100944B2 (en) 1992-04-15

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EP (1) EP0100944B2 (en)
DE (1) DE3374049D1 (en)
ES (1) ES524420A0 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309619A1 (en) * 1983-03-17 1984-09-27 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Conveying device for large castings in casting systems
EP0173802A1 (en) * 1984-08-10 1986-03-12 Georg Fischer Aktiengesellschaft Abrasive blasting machine with at least one rotary holding device for workpieces
GB2202552A (en) * 1987-03-06 1988-09-28 Coated Electrodes Internationa Coating elongated carbon articles by spraying
GB2315252A (en) * 1996-07-16 1998-01-28 Nec Corp Controlling travelling carrier system
KR100716925B1 (en) 2005-12-29 2007-05-10 주식회사 포스코 Material fixing device of shot blasting device
CN103753408A (en) * 2014-02-11 2014-04-30 中航飞机股份有限公司西安飞机分公司 Automatic prestress clamp
CN111673624A (en) * 2020-06-23 2020-09-18 苏州安井自动化设备有限公司 Automatic line for feeding and discharging in sand blasting

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1176560A (en) * 1966-11-08 1970-01-07 Pangborn Corp Continuous Cleaning Apparatus
GB1242933A (en) * 1968-06-20 1971-08-18 Badische Maschf Gmbh Multi-station blasting machines
DE2020516A1 (en) * 1970-04-27 1971-11-25 Walker Helen H Ball or sandblasting device
CH529614A (en) * 1971-03-31 1972-10-31 Fischer Ag Georg Process and overhead conveyor centrifugal blasting machine for the surface treatment of workpieces

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309619A1 (en) * 1983-03-17 1984-09-27 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Conveying device for large castings in casting systems
EP0173802A1 (en) * 1984-08-10 1986-03-12 Georg Fischer Aktiengesellschaft Abrasive blasting machine with at least one rotary holding device for workpieces
US4662125A (en) * 1984-08-10 1987-05-05 Georg Fischer Aktiengesellschaft Centrifugal blasting machine having a rotatable workpiece holder
GB2202552A (en) * 1987-03-06 1988-09-28 Coated Electrodes Internationa Coating elongated carbon articles by spraying
GB2315252A (en) * 1996-07-16 1998-01-28 Nec Corp Controlling travelling carrier system
US5941678A (en) * 1996-07-16 1999-08-24 Nec Corporation Overhead traveling carrier system for speedily conveying load and method of controlling thereof
GB2315252B (en) * 1996-07-16 2000-07-05 Nec Corp Traveling carrier system and method of controlling the same
KR100716925B1 (en) 2005-12-29 2007-05-10 주식회사 포스코 Material fixing device of shot blasting device
CN103753408A (en) * 2014-02-11 2014-04-30 中航飞机股份有限公司西安飞机分公司 Automatic prestress clamp
CN111673624A (en) * 2020-06-23 2020-09-18 苏州安井自动化设备有限公司 Automatic line for feeding and discharging in sand blasting

Also Published As

Publication number Publication date
ES8406056A1 (en) 1984-07-16
EP0100944B1 (en) 1987-10-14
EP0100944A3 (en) 1985-10-23
EP0100944B2 (en) 1992-04-15
ES524420A0 (en) 1984-07-16
DE3374049D1 (en) 1987-11-19

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