EP0024577B2 - Oscillating drum for continuous blast cleaning of workpieces - Google Patents

Oscillating drum for continuous blast cleaning of workpieces Download PDF

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Publication number
EP0024577B2
EP0024577B2 EP80104559A EP80104559A EP0024577B2 EP 0024577 B2 EP0024577 B2 EP 0024577B2 EP 80104559 A EP80104559 A EP 80104559A EP 80104559 A EP80104559 A EP 80104559A EP 0024577 B2 EP0024577 B2 EP 0024577B2
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EP
European Patent Office
Prior art keywords
jacket
drum
workpieces
longitudinal direction
opening
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
Application number
EP80104559A
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German (de)
French (fr)
Other versions
EP0024577A1 (en
EP0024577B1 (en
Inventor
Hans-Georg Ing.-Grad. Wodausch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
Original Assignee
Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
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Application filed by Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag filed Critical Maschinen- und Werkzeugfabrik Kabel Vogel & Schemmann Ag
Priority to AT80104559T priority Critical patent/ATE2879T1/en
Publication of EP0024577A1 publication Critical patent/EP0024577A1/en
Publication of EP0024577B1 publication Critical patent/EP0024577B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
    • B24C3/26—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by barrel cages, i.e. tumblers; Gimbal mountings therefor
    • B24C3/266—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by barrel cages, i.e. tumblers; Gimbal mountings therefor for continuously travelling workpieces

Definitions

  • the invention relates to a flow swivel drum, which is provided with an upper jacket opening, is inclined in the longitudinal direction and is pivotably mounted about its axis, for the continuous blasting of workpieces passing through the drum in the longitudinal direction with the aid of centrifugal wheels.
  • Such a flow swivel drum as is known for example from DE-A1-24 24 086, is continuously swiveled between two limit positions during the blasting process.
  • the workpieces traveling through the flow swivel drum should not only slide longitudinally along the drum, but also rotate around themselves, "roll over” so that they are struck on their entire surface by the blasting agent which is blown through the jacket opening by the centrifugal wheels the drum is blasted.
  • Practice shows that this turning around itself does not take place to the desired extent on all workpieces.
  • a cleaning machine for blasting workpieces is known from DD-A-34668.
  • an oscillating trough is provided which is closed on the end faces and has driver strips on the inside of the jacket.
  • a drive produces a reciprocating movement of the trough transversely to the longitudinal axis, the ratio of the return and return times being approximately 1: 5.
  • the workpieces should be carried along with the slow movement, with the fast backward movement they should remain in place.
  • the workpieces should consequently perform a running movement transverse to the longitudinal axis of the trough during the trough movement, roll over after a certain pivoting movement and fall back into the trough. From above, the workpieces are blasted with an abrasive, e.g. B. irradiated by means of a centrifugal wheel.
  • the invention solves the problem, using the principle known from the plastering machine to use driving bars to equip a flow-swivel drum of the type mentioned with a device for rotating the workpieces located in the drum to inevitably bring about itself.
  • the workpieces sliding on the inside of the drum shell during its pivoting movement in the axial and in the circumferential direction can only slide in the circumferential direction until they reach the turning stage.
  • the workpieces are initially held longer than the swivel angle of the drum shell, especially on the steep leg surface; until, when the swivel angle is increased further, the workpieces roll over, which then rest against the inside of the swivel drum with another surface.
  • the part of the workpiece surface that faces the opening in the jacket and thus the blast wheels and is blasted changes at the turning stage at the latest every second swivel of the flow swivel drum.
  • the flow swivel drum shown in the figures has an inlet drum 1 in the longitudinal direction, followed by a blasting drum 2 and then a blasting drum 2 and then a sieve drum 3.
  • the flow swivel drum is - which is not shown in the drawing - inclined in the longitudinal direction, so that workpieces are naturally conveyed from the entrance of the inlet drum 1 to the outlet of the screen drum 3 when the flow swivel drum is pivoted.
  • the inlet drum 1 is narrowed towards the feed side in the manner of a funnel 4.
  • the inlet drum 1 has a flange ring 5 on the end face facing the blasting drum 2.
  • the screening drum 3 also has a flange ring 6 on the end facing the jet drum 2; followed by a support ring 7 towards the outlet side.
  • the bottom of the screening drum 3 is predominantly designed in the manner of a screen 8.
  • a race 11 is provided on the outside of its jacket 10 on each end of the blasting drum 2.
  • the race 11 on one end face is screwed to the flange ring 5 of the inlet drum 1, the other end face to the flange ring 6 with the sieve drum 3 and the associated support ring 7 by means of bolts 12.
  • the bottom of the blasting drum 2 is provided with longitudinal openings 13.
  • a casing opening 14 is left open in the jacket 10, through which blasting media emerging from centrifugal wheels strike the workpieces transported, pivoted and turned in the blasting drum 2.
  • the jacket opening 14 is reinforced laterally in the region of its two side edges by an I-beam 15 each. Other reinforcements are possible.
  • the jacket 10 is provided on its side opposite the jacket opening 14 with a turning stage 16.
  • the turning stage 16 extends in the exemplary embodiment between the inner surfaces of the races 11. It can extend over the entire length of the blasting drum 2.
  • the decisive factor is that when the jet drum 2 is pivoted to the turning stage, when the pivoting angle is increased, the workpieces do not simply slide further along the inner surface of the jacket 10, but rather roll over, 'so that another part of its surface faces the jacket opening 14, which ensures uniform irradiation of the workpieces.
  • the turning stage 16 is formed in the exemplary embodiment as an essentially V-shaped channel pressed outwards into the jacket 10.
  • One leg surface 17 of the turning stage 16 merges tangentially into the jacket 10; the other leg surface 18, which is substantially perpendicular to the first leg surface 17, merges with the jacket.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

1. A continuous pivot drum, which is provided with an upper jacket opening (14), is inclined in the longitudinal direction and is pivotably mounted about its axis, for the continuous radiation of workpieces passing through the drum in the longitudinal direction using fan blowers, characterised in that the jacket (10) is provided opposite ist jacket opening (14) with a turning stage (16) extending over the length of the jacket, which stage is formed as a substantially V-shaped channel which is externally pressed into the jacket (10), the surface of one of whose arms (17) passes tangentially into the jacket (10) and the other of whose arm surfaces (18), substantially perpendicular to the former, passes into the jacket (10) with a bend.

Description

Die Erfindung bezieht sich auf eine Fließ-Schwenktrommel, die mit einer oberen Mantelöffnung versehen, in Längsrichtung geneigt und um ihre Achse schwenkbar gelagert ist, für das kontinuierliche Strahlen von die Trommel in Längsrichtung durchwandernden Werkstucken mit Hilfe von Schleuderrädern.The invention relates to a flow swivel drum, which is provided with an upper jacket opening, is inclined in the longitudinal direction and is pivotably mounted about its axis, for the continuous blasting of workpieces passing through the drum in the longitudinal direction with the aid of centrifugal wheels.

Eine solche Fließ-Schwenktrommel, wie sie beispielsweise aus der DE-A1-24 24 086 bekannt ist, wird während des Strahlvorgangs ständig zwischen zwei Grenzlagen geschwenkt. Dabei sollen die die Fließ-Schwenktrommel durchwandernden Werkstücke nicht nur in Längsrichtung entlang der Trommel gleiten, sondern auch sich um sich selbst drehen, « überschlagen •, damit sie an ihrer gesamten Oberfläche von dem Strahlmittel getroffen werden, welches von den Schleuderrädern durch die Mantelöffnung in die Trommel abgestrahlt wird. Die Praxis zeigt, daß dieses Drehen um sich selbst nicht bei allen Werkstücken in dem gewünschten Maß erfolgt.Such a flow swivel drum, as is known for example from DE-A1-24 24 086, is continuously swiveled between two limit positions during the blasting process. The workpieces traveling through the flow swivel drum should not only slide longitudinally along the drum, but also rotate around themselves, "roll over" so that they are struck on their entire surface by the blasting agent which is blown through the jacket opening by the centrifugal wheels the drum is blasted. Practice shows that this turning around itself does not take place to the desired extent on all workpieces.

Aus der DD-A-34668 ist eine Putzmaschine zum Bestrahlen von Werkstücken bekannt. Als Behältnis, in dem der Putzvorgang ausgeführt wird, ist eine Schwingmulde vorgesehen, die an den Stirnseiten verschlossen ist und innen auf dem Mantel Mitnehmerleisten aufweist. Ein Antrieb erzeugt eine quer zur Längsachse hin- und hergehende Bewegung der Mulde, wobei das Verhältnis der Hin- und Rücklaufzeit etwa 1 : 5 beträgt. Die Werkstücke sollen bei der langsamen Bewegung mitgenommen, bei der schnellen Rückwärtsbewegung an ihrem Ort bleiben. Die Werkstücke sollen folglich bei der Muldenbewegung eine laufende Bewegung quer zur Längsachse der Mulde ausführen, sich nach einer bestimmten Schwenkbewegung überschlagen und in die Mulde zurückfallen. Von oben her werden die Werkstücke durch eine Strahlmittel, z. B. mittels eines Schleuderrads, bestrahlt.A cleaning machine for blasting workpieces is known from DD-A-34668. As a container in which the cleaning process is carried out, an oscillating trough is provided which is closed on the end faces and has driver strips on the inside of the jacket. A drive produces a reciprocating movement of the trough transversely to the longitudinal axis, the ratio of the return and return times being approximately 1: 5. The workpieces should be carried along with the slow movement, with the fast backward movement they should remain in place. The workpieces should consequently perform a running movement transverse to the longitudinal axis of the trough during the trough movement, roll over after a certain pivoting movement and fall back into the trough. From above, the workpieces are blasted with an abrasive, e.g. B. irradiated by means of a centrifugal wheel.

Die Erfindung, wie sie in den Patentansprüchen gekennzeichnet ist, löst die Aufgabe, unter Anwendung 'des von der Putzmaschine bekannten Prinzips der Verwendung von Mitnehmerleisten eine Fließ-Schwenktrommel der eingangs genannten Art mit einer Vorrichtung auszustatten, die das Drehen der in der Trommel befindlichen Werkstücke um sich selbst zwangsläufig herbeiführt.The invention, as characterized in the claims, solves the problem, using the principle known from the plastering machine to use driving bars to equip a flow-swivel drum of the type mentioned with a device for rotating the workpieces located in the drum to inevitably bring about itself.

Bei der Erfindung können die innen an dem Trommelmantel während seiner Schwenkbewegung in Axial- und in Umfangsrichtung gleitenden Werkstücke in Umfangsrichtung nur so weit gleiten, bis sie an die Wendestufe gelangen. In der Wendestufe werden die Werkstücke zunächst länger gehalten als es dem Schwenkwinkel des Trommelmantels entspricht, insbesondere an der steilen Schenkelfläche ; bis bei weiterem Vergrößern des Schwenkwinkels das Überschlagen der Werkstücke erfolgt, welche dann mit einer anderen Fläche innen an der Schwenktrommel anliegen. Der Teil der Werkstückoberfläche, der der Öffnung im Mantel und damit den Schleuderrädern zugewandt ist und gestrahlt wird, ändert sich an der Wendestufe spätestens bei jeder zweiten Schwenkung der Fließ-Schwenktrommel.In the invention, the workpieces sliding on the inside of the drum shell during its pivoting movement in the axial and in the circumferential direction can only slide in the circumferential direction until they reach the turning stage. In the turning stage, the workpieces are initially held longer than the swivel angle of the drum shell, especially on the steep leg surface; until, when the swivel angle is increased further, the workpieces roll over, which then rest against the inside of the swivel drum with another surface. The part of the workpiece surface that faces the opening in the jacket and thus the blast wheels and is blasted changes at the turning stage at the latest every second swivel of the flow swivel drum.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen näher erläutert. Es zeigt

  • Figur 1 einen Längsschnitt durch eine Fließ-Schwenktrommel entlang der Schnittlinie C-D in Fig. 2 und
  • Figur 2 einen Querschnitt durch die in Fig. 1 dargestellte Fließ-Schwenktrommel entlang der Schnittlinie A-B.
The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. It shows
  • 1 shows a longitudinal section through a flow swivel drum along the section line CD in Fig. 2 and
  • Figure 2 shows a cross section through the flow swivel drum shown in Fig. 1 along the section line AB.

Die in den Figuren dargestellte Fließ-Schwenktrommel weist in Längsrichtung eine Einlauftrommer 1, daran anschließend eine Strahltrommel 2 und wiederum daran anschließend eine Strahltrommel 2 und wiederum daran anschließend eine Siebtrommel 3 auf. Die Fließ-Schwenktrommel ist - was in der Zeichnung nicht dargestellt ist - in Längsrichtung geneigt, so daß Werkstücke beim Schwenken der Fließ-Schwenktrommel auf natürliche Weise vom Eingang der Einlauftrommel 1 bis zum Ausgang der Siebtrommel 3 gefördert werden. Die Einlauftrommel 1 ist zur Aufgabeseite hin nach Art eines Trichters 4 verengt. An der der Strahltrommel 2 zugewandten Stirnseite weist die Einlauftrommel 1 einen Flanschring 5 auf. Auch die Siebtrommel 3 weist auf der der Strahltrommel 2 zugewandten Stirnseite einen Flanschring 6 auf ; daran anschließend zur Auslaufseite hin einen Stützring 7. Der Boden der Siebtrommel 3 ist zum überwiegenden Teil nach Art eines Siebs 8 ausgebildet.The flow swivel drum shown in the figures has an inlet drum 1 in the longitudinal direction, followed by a blasting drum 2 and then a blasting drum 2 and then a sieve drum 3. The flow swivel drum is - which is not shown in the drawing - inclined in the longitudinal direction, so that workpieces are naturally conveyed from the entrance of the inlet drum 1 to the outlet of the screen drum 3 when the flow swivel drum is pivoted. The inlet drum 1 is narrowed towards the feed side in the manner of a funnel 4. The inlet drum 1 has a flange ring 5 on the end face facing the blasting drum 2. The screening drum 3 also has a flange ring 6 on the end facing the jet drum 2; followed by a support ring 7 towards the outlet side. The bottom of the screening drum 3 is predominantly designed in the manner of a screen 8.

An jeder Stirnseite der Strahltrommel 2 ist außen an ihrem Mantel 10 ein Laufring 11 vorgesehen. Der Laufring 11 an der einen Stirnseite ist mit dem Flanschring 5 der Einlauftrommel 1, der an der anderen Stirnseite mit dem Flanschring 6 die Siebtrommel 3 sowie dem zugehörigen Stützring 7 mittels Schraubenbolzen 12 verschraubt. Der Boden der Strahltrommel 2 ist mit Längsdurchbrüchen 13 versehen. Im oberen Teil der Strahltrommel 2 ist in dem Mantel 10 eine Mantelöffnung 14 freigelassen, durch die von Schleuderrädern austretende Strahlmittel auf die in der Strahltrommel 2 transportierten, geschwenkten und gewendeten Werkstücke treffen. Seitlich ist die Mantelöffnung 14 im Bereich ihrer beiden Seitenkanten durch je einen I-Träger 15 verstärkt. Andere Verstärkungen sind möglich.A race 11 is provided on the outside of its jacket 10 on each end of the blasting drum 2. The race 11 on one end face is screwed to the flange ring 5 of the inlet drum 1, the other end face to the flange ring 6 with the sieve drum 3 and the associated support ring 7 by means of bolts 12. The bottom of the blasting drum 2 is provided with longitudinal openings 13. In the upper part of the blasting drum 2, a casing opening 14 is left open in the jacket 10, through which blasting media emerging from centrifugal wheels strike the workpieces transported, pivoted and turned in the blasting drum 2. The jacket opening 14 is reinforced laterally in the region of its two side edges by an I-beam 15 each. Other reinforcements are possible.

Der Mantel 10 ist auf seiner der Mantelöffnung 14 gegenüberliegenden Seite mit einer Wendestufe 16 versehen. Die Wendestufe 16 erstreckt sich im Ausfürungsbeispiel zwischen den Innenflächen der Laufringe 11. Sie kann sich über die gesamte Länge der Strahltrommel 2 erstrecken. Maßgebend ist, daß beim Schwenken der Strahltrommel 2 an die Wendestufe gelangende Werkstücke bei Vergrößerung des Schwenkwinkels nicht einfach entlang der Innenfläche des Mantels 10 weiterrutschen, sondern sich überschlagen,'so daß ein anderer Teil ihrer Oberfläche der Mantelöffnung 14 zugewandt ist, was gleichmäßiges Bestrahlen der Werkstücke gewährleistet. Die Wendestufe 16 ist im Ausführungsbeispiel als in den Mantel 10 nach außen gedrückte im wesentlichen V-förmige Rinne ausgebildet. Die eine Schenkelfläche 17 der Wendestufe 16 geht tangential in den Mantel 10 über ; die andere Schenkelfläche 18, die zu der ersten Schenkelfläche 17 im wesentlichen senkrecht steht, geht mit einem Knick in den Mantel über.The jacket 10 is provided on its side opposite the jacket opening 14 with a turning stage 16. The turning stage 16 extends in the exemplary embodiment between the inner surfaces of the races 11. It can extend over the entire length of the blasting drum 2. The decisive factor is that when the jet drum 2 is pivoted to the turning stage, when the pivoting angle is increased, the workpieces do not simply slide further along the inner surface of the jacket 10, but rather roll over, 'so that another part of its surface faces the jacket opening 14, which ensures uniform irradiation of the workpieces. The turning stage 16 is formed in the exemplary embodiment as an essentially V-shaped channel pressed outwards into the jacket 10. One leg surface 17 of the turning stage 16 merges tangentially into the jacket 10; the other leg surface 18, which is substantially perpendicular to the first leg surface 17, merges with the jacket.

Claims (2)

1. A continuous pivot drum, which is provided with an upper jacket opening (14), is inclined in the longitudinal direction and is pivotably mounted about its axis, for the continuous radiation of workpieces passing through the drum in the longitudinal direction using fan blowers, characterised in that the jacket (10) is provided opposite ist jacket opening (14) with a turning stage (16) extending over the length of the jacket, which stage is formed as a substantially V-shaped channel which is externally pressed into the jacket (10), the surface of one of whose arms (17) passes tangentially into the jacket (10) and the other of whose arm surfaces (18), substantially perpendicular to the former, passes into the jacket (10) with a bend.
2. A continuous pivot drum as claimed in claim 1, characterised in that the bend at the passage of the second arm surface (18) into the jacket (10) is disposed in the longitudinal plane of symmetry of the jacket.
EP80104559A 1979-08-16 1980-08-01 Oscillating drum for continuous blast cleaning of workpieces Expired EP0024577B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104559T ATE2879T1 (en) 1979-08-16 1980-08-01 FLOATING SWIVEL DRUM FOR CONTINUOUS BLASTING OF WORKPIECES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19797923277U DE7923277U1 (en) 1979-08-16 1979-08-16 FLOWING SWIVEL DRUM FOR CONTINUOUS BLASTING OF WORKPIECES
DE7923277U 1979-08-16

Publications (3)

Publication Number Publication Date
EP0024577A1 EP0024577A1 (en) 1981-03-11
EP0024577B1 EP0024577B1 (en) 1983-03-30
EP0024577B2 true EP0024577B2 (en) 1989-01-11

Family

ID=6706597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104559A Expired EP0024577B2 (en) 1979-08-16 1980-08-01 Oscillating drum for continuous blast cleaning of workpieces

Country Status (3)

Country Link
EP (1) EP0024577B2 (en)
AT (1) ATE2879T1 (en)
DE (1) DE7923277U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7923277U1 (en) * 1979-08-16 1979-11-29 Maschinen- U. Werkzeugfabrik Kabel Vogel & Schemmann Ag, 5800 Hagen FLOWING SWIVEL DRUM FOR CONTINUOUS BLASTING OF WORKPIECES
CH683678A5 (en) * 1991-08-13 1994-04-29 Fischer Georg Giessereianlagen Shot-blasting machine.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD34667A (en) *
US2116160A (en) * 1935-10-22 1938-05-03 Pangborn Corp Abrading apparatus
US2440819A (en) * 1944-03-09 1948-05-04 Pangborn Corp Tumbling mill
NL156945B (en) * 1972-09-29 1978-06-15 Expert Nv DEVICE FOR COOLING AND DRYING FORM SAND AND FOR COOLING CAST PIECES.
DE2424086A1 (en) * 1974-05-17 1975-11-27 Vogel & Schemmann Masch Continuous drum sand blasting device - drum inclined in longitudinal direction and supported pivot about its axis between two angular positions
DE7923277U1 (en) * 1979-08-16 1979-11-29 Maschinen- U. Werkzeugfabrik Kabel Vogel & Schemmann Ag, 5800 Hagen FLOWING SWIVEL DRUM FOR CONTINUOUS BLASTING OF WORKPIECES

Also Published As

Publication number Publication date
EP0024577A1 (en) 1981-03-11
EP0024577B1 (en) 1983-03-30
ATE2879T1 (en) 1983-04-15
DE7923277U1 (en) 1979-11-29

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