EP1721705B1 - Device for abrasive blasting of workpieces - Google Patents

Device for abrasive blasting of workpieces Download PDF

Info

Publication number
EP1721705B1
EP1721705B1 EP06113714A EP06113714A EP1721705B1 EP 1721705 B1 EP1721705 B1 EP 1721705B1 EP 06113714 A EP06113714 A EP 06113714A EP 06113714 A EP06113714 A EP 06113714A EP 1721705 B1 EP1721705 B1 EP 1721705B1
Authority
EP
European Patent Office
Prior art keywords
blasting
opening
container
chamber
pipe
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.)
Not-in-force
Application number
EP06113714A
Other languages
German (de)
French (fr)
Other versions
EP1721705A1 (en
Inventor
Daniel Böhler
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.)
Visonn & Co KG GmbH
Original Assignee
Visonn & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Visonn & Co KG GmbH filed Critical Visonn & Co KG GmbH
Publication of EP1721705A1 publication Critical patent/EP1721705A1/en
Application granted granted Critical
Publication of EP1721705B1 publication Critical patent/EP1721705B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/003—Removing abrasive powder out of the blasting machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
    • B24C3/065—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable with suction means for the abrasive and the waste material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier

Definitions

  • the present invention relates to a device for abrasive blasting, in particular for sandblasting of workpieces, in particular of smaller workpieces, for example in the hobby sector (model making) or for carrying out blasting operations on smaller, limited areas of larger surfaces, for example in motor vehicles.
  • Devices for abrasive blasting are known, for example, as sandblasting devices. These previously known devices generally consist of a blasting agent container and a lance.
  • the blasting agent such as quartz sand is transported by a compressor under pressure through a hose from the blasting agent container to the lance and thus directed to a workpiece to be machined by means of a compressor.
  • these devices are generally relatively large and usually not operable with low operating pressures, so that very small components or small areas can hardly be satisfactorily processed.
  • Another disadvantage is that in these devices blasting material in large quantities enters the environment, which prohibits use in residential areas, or the blasting agent can be collected only by using an additional closed cabin, whereby the system but further increased and more expensive ,
  • a device for abrasive blasting of workpieces is known, on which the preamble of claim 1 is based.
  • This device has a jet lance, which has an opening for connecting a device for sucking air from the jet lance, such as an industrial vacuum cleaner, as well as located at the front end further opening for placement on a surface of a workpiece to be machined.
  • a suction opening is provided, into which a hose feed line to an external blasting medium container is inserted so that an annular gap for sucking atmospheric air remains.
  • the blasting medium is sucked from the blasting agent container through the hose feed line into the blasting lance, when a negative pressure is generated there during operation by sucking off the air.
  • the blasting medium is guided and accelerated within the blasting lance by a mixing tube firmly integrated into the blasting lance.
  • the invention is based on the principle described above and its object is to bring a detail improved apparatus for abrasive blasting of workpieces in proposal, which can be realized inexpensively and is easier to handle.
  • the device should also be able to process small areas on large areas.
  • This device has a device for abrasive blasting of workpieces according to protection claim 1.
  • This device has a (evakuierbare in operation) chamber having a first opening, a nozzle unit with a jet pipe, which is insertable into the chamber via the first opening, and a container for receiving blasting agent, wherein the container for receiving is attached or attachable by blasting agent to the nozzle unit, such that the blasting agent can leak from the container freely into an inlet of the nozzle unit.
  • the device according to the invention has the advantage that due to the fixed connection between the blasting agent container and the jet tube unit, a hose is completely eliminated. Since the blasting agent is conveyed by the negative pressure in the chamber from the container through the jet pipe into the chamber an operator only has to handle the jet pipe unit and can therefore move relatively freely. This also makes it possible to process small areas on large areas, e.g. in the automotive sector with the repair of body parts or in inaccessible areas easily possible.
  • the chamber has a second opening, with which the chamber can be placed on a workpiece to be machined.
  • an elastic seal is provided for sealing the gap between the outer periphery of the second opening and the workpiece.
  • the local editing of small areas on larger areas is very easy, because the area to be radiated is limited by the size of the second opening and the chamber or the opening can be easily placed by hand on the respective location to be machined.
  • the jet tube guided through the first opening in the chamber is movable within the chamber and can be directed to the area enclosed by the second opening.
  • a seal 4A is provided to seal the access opening with respect to the jet pipe 6 when it is inserted into the access opening 4 and to allow a rotation and tilting movement of the jet pipe and a movement in the longitudinal direction.
  • an elastic membrane made of plastic or rubber is used as a seal.
  • the jet tube unit 5 has a container 8 for receiving blasting agent, wherein the blasting agent container 8 is preferably detachably fastened or attachable to the nozzle unit, such that the blasting agent is released from the container 8, i. essentially can only leak under the action of gravity in an inlet 9 on the jet pipe unit 5.
  • a blasting agent quartz sand or any other suitable fine-grained substance can be used.
  • the inlet 9 is located at the upper rear end of a housing 7, which is formed on the outer contour so that it supports the handling by an operator as a handle.
  • a housing 7 of the jet pipe unit 5 At the rear end of the housing 7 of the jet pipe unit 5 is an air inlet opening 11, which communicates with the emerging at the front end of the housing 7 elongate jet pipe 6 and the inlet 9 for the blasting agent.
  • Fig. 3 shows a pipe connector 12 arranged in the housing 7, which connects said openings and the jet pipe to one another.
  • the jet pipe unit 5 has in the region of the inlet a receptacle 8 B, via which the container 8, are provided on the corresponding counterparts in the form of struts 8C, releasably supported on the nozzle unit 5 so that a spout 13 of the container 8 in a predetermined distance above the inlet 9 is located.
  • the inlet is further expanded in diameter relative to the outlet of the container, formed funnel-shaped inside and provided with a circumferential raised collar or edge to reliably guide the blasting agent despite the distance between the outlet and inlet into the connector and to prevent leakage.
  • a metering device 10 is preferably provided on the container 8, which can selectively change or close the cross section of the outlet opening in a manner known per se.
  • the metering device may comprise a lever accessible to and actuatable by a user, e.g. is urged and urged by a spring into a closed position, in which the outlet opening is closed when not in use and only by applying a force and as long as it acts is opened.
  • the container is closed at its upper end by a removable lid 8A, via which the filling takes place.
  • the transport is carried out according to the invention solely due to the effect of the negative pressure in the environment of the object to be irradiated, ie at the outlet of the jet pipe, is sucked through the air through the jet pipe, which entrains the flowing from the container blasting agent.
  • a holding device here in the form of a holding bracket 8D
  • the jet pipe unit can be suspended in position with standing upright container.
  • this can be wholly or partially made of an at least partially transparent material or have a viewing window.
  • an extension can be provided at the connection region between the container 8 for receiving blasting agent and the jet pipe unit 5 to the jet pipe 6, for example, inclined by 45 ° pivoting plane in which the container 8 relative to the jet pipe 6 to a longitudinal axis of the jet pipe. 6 Angled axis is rotatable or pivotable.
  • the jet pipe 6 can be inclined relative to the horizontal, while the container 8 can still be arranged substantially vertically by pivoting in the inclined plane.
  • the blasting agent can flow out of the container into the inlet, even with an inclined jet pipe substantially unhindered.
  • an additional hose can be provided for the device, which can be connected at one end to the jet pipe unit at the inlet and at its other end has an adapter piece with an inlet, which with the then removed from the jet pipe unit container Can be coupled so that the outlet of the container at a certain distance is positioned over the inlet of the adapter piece and the blasting agent from the container can leak freely into the inlet of the adapter piece.
  • the container may then be hung at a distance from the jet pipe to the headband and is connected to the jet pipe unit via the hose through which the blasting agent supply takes place.
  • the evacuatable chamber 2 has a second, larger opening 1, which is approximately opposite the access opening 4 for the jet pipe 6 and with which the chamber can be placed on a workpiece to be machined.
  • An elastic seal 1A for sealing the gap between the outer periphery of the opening 1 and the workpiece is attached to the chamber unit.
  • the chamber unit 2 has as in Fig. 1 and 2 11 show a further, third opening 3A for connecting a device for extracting air from the blasting chamber 2A in order to generate therein the negative pressure required for the operation of the device.
  • the opening 3A may be in the form of a hose nozzle with or without additional connection means for fixing a hose, for example a plug connection or a locking connection such as a bayonet or latching connection.
  • the opening 3A is provided at the end of an outgoing of the blasting chamber 2A at an angle pipe socket 3, the possibility of the pipe socket as a handle for holding the then by hand easy to use chamber unit to use.
  • this pipe or connecting piece 3 is designed so that a commercially available vacuum cleaner, optionally using an intermediate piece and / or connecting hose can be connected.
  • the chamber unit 2 can be made of any material such as metal or plastic and in any form per se, as long as the entire construction withstands the expected negative pressure inside the blasting chamber 2A and the abrasive effect of the abrasive used as desired.
  • the production as a one-piece up to the seals preferably one-piece Kunststoffspritzg tellteil offers itself for cost reasons.
  • the use of a transparent plastic is advantageous, because then an observation of the work area is ensured in use from all sides without having to remove the chamber unit from the processing site.
  • one or more viewing windows could be provided for a non-or slightly transparent material.
  • the generation of the negative pressure in the blasting chamber 2A is possible when the processing opening 1 of the chamber unit 2 is placed on a surface by making the seal by means of the gasket 1A, the blast pipe 6 is inserted through the access opening 4, and the exhaust opening 6A on the blast pipe 6 for the blasting agent is located within the blasting chamber 2A and the suction works and sucks air from the interior of the blasting chamber 2A.
  • the chamber does not have to be completely hermetically sealed. Decisive is such a seal that during operation inside the blasting chamber 2A still sufficient vacuum can be achieved by evacuation. In operation, ambient air is then drawn in through the air inlet opening 11 of the jet tube unit and transported through the jet tube 6 into the jet chamber 2A.
  • the blasting agent is also removed from the container Sucked 8 through the inlet 9 in the jet pipe unit and torn together with the air through the jet pipe into the interior of the jet chamber 2A and ejected there from the outlet opening 6A.
  • the inlet 9 pipe section of the connecting piece 12 is preferably mounted at an acute angle to the longitudinal or air flow direction.
  • the workpiece located in the chamber or the machining point defined and bounded by the machining opening 1 can be specifically processed.
  • the suction power By changing the suction power, the radiant power can be varied easily.
  • the suction during the generation of the negative pressure the spent blasting agent is sucked in at the same time so that a further additional suction as in conventional blasting systems, which work with excess pressure or compressed air as the transport medium for the blasting agent, omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Cleaning In General (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Nozzles (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Coating Apparatus (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The device has a chamber (2) with a jet chamber (2A) and an opening (4). A jet pipe unit with a jet pipe (6) is connected into the first opening of the jet chamber and a container (8) holds the blast material. The container is fastened to the jet pipe unit (5) or fastened, in such a manner, that the blast material can run freely into an intake (9) of the jet pipe unit.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum abrasiven Strahlen, insbesondere zum Sandstrahlen von Werkstücken, insbesondere von kleineren Werkstücken, beispielsweise im Hobbybereich (Modellbau) oder zur Durchführung von Strahlbearbeitungen an kleineren begrenzten Bereichen von größeren Flächen, beispielsweise bei Kraftfahrzeugen.The present invention relates to a device for abrasive blasting, in particular for sandblasting of workpieces, in particular of smaller workpieces, for example in the hobby sector (model making) or for carrying out blasting operations on smaller, limited areas of larger surfaces, for example in motor vehicles.

Vorrichtungen zum abrasiven Strahlen sind beispielsweise als Sandstrahlvorrichtungen bekannt. Diese bisher bekannten Geräte bestehen im allgemeinen aus einem Strahlmittelbehälter und einer Lanze. Das Strahlmittel, beispielsweise Quarzsand wird dabei mittels eines Kompressors unter Druck durch einen Schlauch von dem Strahlmittelbehälter zur Lanze transportiert und damit auf ein zu bearbeitendes Werkstück gerichtet.Devices for abrasive blasting are known, for example, as sandblasting devices. These previously known devices generally consist of a blasting agent container and a lance. The blasting agent, such as quartz sand is transported by a compressor under pressure through a hose from the blasting agent container to the lance and thus directed to a workpiece to be machined by means of a compressor.

Diese bekannten Vorrichtungen sind insbesondere wegen der Notwendigkeit des Kompressors verhältnismäßig teuer, so daß ihr Einsatz für gelegentliche Arbeiten wie im privaten oder Hobby-Bereich, beispielsweise im Modellbau unwirtschaftlich ist.These known devices are relatively expensive, in particular because of the necessity of the compressor, so that their use for occasional work such as in the private or hobby sector, for example in model making is uneconomical.

Außerdem sind diese Vorrichtungen im allgemeinen relativ groß und in der Regel nicht mit geringen Arbeitsdrücken betreibbar, so daß sehr kleine Bauteile oder kleine Bereiche kaum zufriedenstellend bearbeitet werden können. Ein weiterer Nachteil besteht darin, daß bei diesen Vorrichtungen Strahlmittel in großer Menge in die Umgebung gelangt, wodurch sich ein Einsatz in Wohnbereichen verbietet, oder das Strahlmittel nur durch Verwendung einer zusätzlichen geschlossenen Kabine aufgefangen werden kann, wodurch die Anlage aber weiter vergrößert und verteuert wird.In addition, these devices are generally relatively large and usually not operable with low operating pressures, so that very small components or small areas can hardly be satisfactorily processed. Another disadvantage is that in these devices blasting material in large quantities enters the environment, which prohibits use in residential areas, or the blasting agent can be collected only by using an additional closed cabin, whereby the system but further increased and more expensive ,

Schließlich ist bei den bekannten Vorrichtungen eine Begrenzung des zu bearbeitenden Bereiches nur durch Abkleben oder Maskieren der übrigen Flächen möglich. Das Abkleben führt aber dazu, dass an der Grenze zum gestrahlten Bereich ein relativ schroffer Übergang entsteht, der beispielsweise für eine anschließende Lackierung erst durch Auftragen und wiederholtes Schleifen einer Füller- bzw. Spachtelmasse geglättet werden muss.Finally, in the known devices, a limitation of the area to be processed only by masking or masking the remaining surfaces possible. However, the masking results in a relatively sharp transition occurring at the boundary to the blasted area, which must be smoothed, for example, only by applying and repeatedly sanding a filler or leveling compound for subsequent painting.

Bekannt ist ferner aus der DE 19614555 eine Vorrichtung und ein Verfahren zum abrasiven Strahlen von Werkstücken, bei dem ein Strahlmittel durch Unterdruck, der durch Evakuieren einer Kammer erzeugt wird, von einem Speicherbehälter über einen Schlauch und eine Sprühlanze in die Kammer befördert und auf ein in der Kammer befindliches kleines Werkstück gestrahlt wird. Die vorliegende Erfindung basiert auf dem aus diesem Stand der Technik bekannten Wirkungsprinzip. Nachteil bei diesem Stand der Technik ist die Begrenzung des Arbeits- und Bewegungsbereichs auf die Schlauchlänge und die aufgrund des mitzuführenden Schlauches eingeschränkte Bewegungsfreiheit sowie eine Begrenzung der Größe der bearbeitbaren Werkstücke, sofern diese in die Kammer eingebracht werden sollen.It is also known from the DE 19614555 an apparatus and a method for abrasive blasting of workpieces, wherein a blasting agent is conveyed by vacuum, which is generated by evacuating a chamber, from a storage container via a hose and a spray lance into the chamber and blasted onto a small workpiece located in the chamber , The present invention is based on the known from this prior art principle of action. Disadvantage of this prior art is the limitation of the working and movement range on the hose length and limited due to the hose to be carried freedom of movement and a limitation on the size of the workpieces, provided that they are to be introduced into the chamber.

Aus der DE 10257241 A1 ist eine Vorrichtung zum abrasiven Strahlen von Werkstücken bekannt, auf der der Oberbegriff des Patentanspruches 1 basiert. Diese Vorrichtung besitzt eine Strahllanze, die eine Öffnung zum Anschluß einer Einrichtung zum Absaugen von Luft aus der Strahllanze, z.B. ein Industriestaubsauger, sowie eine am vorderen Ende befindliche weitere Öffnung zum Aufsetzen auf eine Oberfläche eines zu bearbeitenden Werkstückes besitzt. Am hinteren Ende der Strahllanze ist eine Ansaugöffnung vorgesehen, in die eine Schlauchzuleitung zu einem externen Strahlmittelbehälter so eingesetzt ist, daß ein Ringspalt zum Ansaugen von Atmosphärenluft bestehen bleibt. Das Strahlmittel wird von dem Strahlmittelbehälter durch die Schlauchzuleitung in die Strahllanze angesaugt, wenn dort im Betrieb durch Absaugen der Luft ein Unterdruck erzeugt wird. Das Strahlmittel wird innerhalb der Strahllanze durch ein in die Strahllanze fest integriertes Mischrohr geführt und beschleunigt.From the DE 10257241 A1 a device for abrasive blasting of workpieces is known, on which the preamble of claim 1 is based. This device has a jet lance, which has an opening for connecting a device for sucking air from the jet lance, such as an industrial vacuum cleaner, as well as located at the front end further opening for placement on a surface of a workpiece to be machined. At the rear end of the jet lance, a suction opening is provided, into which a hose feed line to an external blasting medium container is inserted so that an annular gap for sucking atmospheric air remains. The blasting medium is sucked from the blasting agent container through the hose feed line into the blasting lance, when a negative pressure is generated there during operation by sucking off the air. The blasting medium is guided and accelerated within the blasting lance by a mixing tube firmly integrated into the blasting lance.

Der Erfindung basiert auf dem zuvor beschriebenen Prinzip und es liegt ihr die Aufgabe zugrunde, eine im Detail verbesserte Vorrichtung zum abrasiven Strahlen von Werkstücken in Vorschlag zu bringen, welche kostengünstig verwirklicht werden kann und einfacher zu handhaben ist.The invention is based on the principle described above and its object is to bring a detail improved apparatus for abrasive blasting of workpieces in proposal, which can be realized inexpensively and is easier to handle.

Gemäß einem weiteren Aspekt der Erfindung soll mit der Vorrichtung auch das Bearbeiten von kleinen Bereichen an großen Flächen möglich sein.According to a further aspect of the invention, the device should also be able to process small areas on large areas.

Erfindungsgemäß wird diese Aufgabe gelöst durch eine Vorrichtung zum abrasiven Strahlen von Werkstücken gemäß Schutzanspruch 1. Diese Vorrichtung besitzt eine (im Betrieb evakuierbare) Kammer mit einer ersten Öffnung, eine Strahlrohreinheit mit einem Strahlrohr, das über die erste Öffnung in die Kammer einführbar ist, und einen Behälter zur Aufnahme von Strahlmittel, wobei der Behälter zur Aufnahme von Strahlmittel an der Strahlrohreinheit befestigt oder befestigbar ist, derart, dass das Strahlmittel aus dem Behälter frei in einen Einlauf der Strahlrohreinheit auslaufen kann.This device has a device for abrasive blasting of workpieces according to protection claim 1. This device has a (evakuierbare in operation) chamber having a first opening, a nozzle unit with a jet pipe, which is insertable into the chamber via the first opening, and a container for receiving blasting agent, wherein the container for receiving is attached or attachable by blasting agent to the nozzle unit, such that the blasting agent can leak from the container freely into an inlet of the nozzle unit.

Die erfindungsgemäße Vorrichtung besitzt den Vorteil, dass aufgrund der festen Verbindung zwischen Strahlmittelbehälter und Strahlrohreinheit ein Schlauch vollständig entfällt. Da das Strahlmittel durch den Unterdruck in der Kammer vom Behälter durch das Strahlrohr in die Kammer befördert wird muss eine Bedienperson nur noch die Strahlrohreinheit handhaben und kann sich daher relativ frei bewegen. Dadurch ist auch das Bearbeiten von kleinen Bereichen an großen Flächen, z.B. im KFZ-Bereich bei der Reparatur von Karosserieteilen oder an unzugänglichen Bereichen leicht möglich.The device according to the invention has the advantage that due to the fixed connection between the blasting agent container and the jet tube unit, a hose is completely eliminated. Since the blasting agent is conveyed by the negative pressure in the chamber from the container through the jet pipe into the chamber an operator only has to handle the jet pipe unit and can therefore move relatively freely. This also makes it possible to process small areas on large areas, e.g. in the automotive sector with the repair of body parts or in inaccessible areas easily possible.

Die Kammer weist eine zweite Öffnung auf, mit der die Kammer auf ein zu bearbeitendes Werkstück aufsetzbar ist. Vorzugsweise ist eine elastische Dichtung zum Abdichten des Zwischenraums zwischen dem Außenumfang der zweiten Öffnung und dem Werkstück vorgesehen. Bei dieser Ausführungsform ist das lokale Bearbeiten von kleinen Bereichen an größeren Flächen sehr einfach möglich, weil der zu strahlende Bereich durch die Größe der zweiten Öffnung begrenzt ist und die Kammer bzw. die Öffnung einfach von Hand auf die jeweils zu bearbeitende Stelle aufsetzbar ist. Das durch die erste Öffnung in der Kammer geführte Strahlrohr ist innerhalb der Kammer bewegbar und auf den von der zweiten Öffnung umschlossenen Bereich richtbar.The chamber has a second opening, with which the chamber can be placed on a workpiece to be machined. Preferably, an elastic seal is provided for sealing the gap between the outer periphery of the second opening and the workpiece. In this embodiment, the local editing of small areas on larger areas is very easy, because the area to be radiated is limited by the size of the second opening and the chamber or the opening can be easily placed by hand on the respective location to be machined. The jet tube guided through the first opening in the chamber is movable within the chamber and can be directed to the area enclosed by the second opening.

Weitere vorteilhafte Ausgestaltungen der erfindungsgemäßen Vorrichtung sind in den abhängigen Schutzansprüchen angegeben.Further advantageous embodiments of the device according to the invention are specified in the dependent claims.

Im folgenden wird die Erfindung anhand der beigefügten Zeichnung detailliert beschrieben. Darin zeigen:

  • Fig. 1 eine perspektivische Darstellung der erfindungsgemäßen Vorrichtung von vorne und oben betrachtet,
  • Fig. 2 eine perspektivische Darstellung der erfindungsgemäßen Vorrichtung von hinten und unten betrachtet, und
  • Fig. 3 eine teilweise geschnittene Darstellung der Strahlrohreinheit der erfindungsgemäßen Vorrichtung in Seitenansicht.
In the following the invention will be described in detail with reference to the accompanying drawings. Show:
  • Fig. 1 a perspective view of the device according to the invention viewed from the front and top,
  • Fig. 2 a perspective view of the device according to the invention viewed from behind and below, and
  • Fig. 3 a partially sectioned view of the nozzle unit of the device according to the invention in side view.

Die in Fig. 1 dargestellte Ausführungsform der Vorrichtung zum abrasiven Strahlen von Werkstücken weist grundsätzlich zwei Bestandteile auf: eine Kammereinheit mit im Betrieb evakuierbarer Kammereinheit 2 mit einer Zugangsöffnung 4 und eine Strahlrohreinheit 5 mit einem Strahlrohr 6, das über die Zugangsöffnung 4 in die Kammereinheit 2 einführbar ist. An der Zugangsöffnung 4 für das Strahlrohr 6 ist eine Dichtung 4A vorgesehen, um die Zugangsöffnung gegenüber dem Strahlrohr 6, wenn dieses in die Zugangsöffnung 4 eingeführt ist, herum abzudichten und eine Dreh- und Kippbewegung des Strahlrohres und eine Bewegung in Längsrichtung zu ermöglichen. Vorzugsweise wird eine elastische Membran aus Kunststoff oder Gummi als Dichtung verwendet.In the Fig. 1 illustrated embodiment of the apparatus for abrasive blasting of workpieces basically has two components: a chamber unit with evacuated in operation chamber unit 2 with an access opening 4 and a jet pipe unit 5 with a jet pipe 6, which is inserted via the access opening 4 in the chamber unit 2. At the access opening 4 for the jet pipe 6, a seal 4A is provided to seal the access opening with respect to the jet pipe 6 when it is inserted into the access opening 4 and to allow a rotation and tilting movement of the jet pipe and a movement in the longitudinal direction. Preferably, an elastic membrane made of plastic or rubber is used as a seal.

Die Strahlrohreinheit 5 besitzt einen Behälter 8 zur Aufnahme von Strahlmittel, wobei der Strahlmittelbehälter 8 an der Strahlrohreinheit vorzugsweise lösbar befestigt oder befestigbar ist, derart, dass das Strahlmittel aus dem Behälter 8 frei, d.h. im wesentlichen nur unter der Wirkung der Schwerkraft in einen Einlauf 9 an der Strahlrohreinheit 5 auslaufen kann. Als Strahlmittel kann Quarzsand oder jeder andere geeignete feinkörnige Stoff verwendet werden.The jet tube unit 5 has a container 8 for receiving blasting agent, wherein the blasting agent container 8 is preferably detachably fastened or attachable to the nozzle unit, such that the blasting agent is released from the container 8, i. essentially can only leak under the action of gravity in an inlet 9 on the jet pipe unit 5. As a blasting agent, quartz sand or any other suitable fine-grained substance can be used.

Der Einlauf 9 sitzt am oberen hinteren Ende eines Gehäuses 7, das an der Außenkontur so ausgeformt ist, dass es als Griffstück die Handhabung durch eine Bedienperson unterstützt. Am hinteren Ende des Gehäuses 7 der Strahlrohreinheit 5 befindet sich eine Lufteintrittsöffnung 11, die mit dem am vorderen Ende aus dem Gehäuse 7 austretenden länglichen Strahlrohr 6 und dem Einlauf 9 für das Strahlmittel kommuniziert. Dies ist besonders deutlich in Fig. 3 ersichtlich, die ein im Gehäuse 7 angeordnetes Rohr-Verbindungsstück 12 zeigt, welches die genannten Öffnungen und das Strahlrohr miteinander verbindet.The inlet 9 is located at the upper rear end of a housing 7, which is formed on the outer contour so that it supports the handling by an operator as a handle. At the rear end of the housing 7 of the jet pipe unit 5 is an air inlet opening 11, which communicates with the emerging at the front end of the housing 7 elongate jet pipe 6 and the inlet 9 for the blasting agent. This is especially clear in Fig. 3 which shows a pipe connector 12 arranged in the housing 7, which connects said openings and the jet pipe to one another.

Die Strahlrohreinheit 5 besitzt im Bereich des Einlaufs eine Aufnahme 8B, über die der Behälter 8, an dem entsprechende Gegenstücke in Form von Streben 8C vorgesehen sind, lösbar so an der Strahlrohreinheit 5 starr gehaltert ist, dass sich ein Auslauf 13 des Behälters 8 in einem vorbestimmten Abstand über dem Einlauf 9 befindet. Der Einlauf ist ferner im Durchmesser gegenüber dem Auslauf des Behälters erweitert, im Inneren trichterförmig ausgebildet und mit einem umlaufenden erhöhten Kragen bzw. Rand versehen, um das Strahlmittel trotz des Abstandes zwischen Auslauf und Einlauf zuverlässig in das Verbindungsstück zu leiten und ein Austreten zu verhindern.The jet pipe unit 5 has in the region of the inlet a receptacle 8 B, via which the container 8, are provided on the corresponding counterparts in the form of struts 8C, releasably supported on the nozzle unit 5 so that a spout 13 of the container 8 in a predetermined distance above the inlet 9 is located. The inlet is further expanded in diameter relative to the outlet of the container, formed funnel-shaped inside and provided with a circumferential raised collar or edge to reliably guide the blasting agent despite the distance between the outlet and inlet into the connector and to prevent leakage.

Zum Einstellen und Regulieren der durch den Auslauf 13 tretenden Strahlmittelmenge ist an dem Behälter 8 vorzugsweise eine Dosiereinrichtung 10 vorgesehen, welche in an sich bekannter Weise den Querschnitt der Auslassöffnung selektiv verändern oder verschließen kann. In einer nicht gezeigten Variante kann die Dosiereinrichtung einen für einen Benutzer zugänglichen und durch diesen betätigbaren Hebel oder Knopf aufweisen, der z.B. durch eine Feder in eine Schließstellung beaufschlagt und gedrängt wird, in der die Auslassöffnung bei nicht-Gebrauch verschlossen wird und nur durch Aufbringen einer Kraft und solange diese wirkt geöffnet wird. Ferner ist der Behälter an seinem oberen Ende durch einen abnehmbaren Deckel 8A verschlossen, über den die Befüllung erfolgt.To adjust and regulate the amount of blasting material passing through the outlet 13, a metering device 10 is preferably provided on the container 8, which can selectively change or close the cross section of the outlet opening in a manner known per se. In a variant not shown, the metering device may comprise a lever accessible to and actuatable by a user, e.g. is urged and urged by a spring into a closed position, in which the outlet opening is closed when not in use and only by applying a force and as long as it acts is opened. Further, the container is closed at its upper end by a removable lid 8A, via which the filling takes place.

Um einen freien Auslauf des Strahlmittels aus dem Behälter unter der Wirkung der Schwerkraft zu gewährleisten, darf im Behälter über dem Strahlmittel kein Unterdruck auftreten. Es sind deshalb ggf. Belüftungsöffnungen am Behälter oder Deckel vorzusehen, damit im Behälter zumindest über dem Strahlmittel Umgebungsdruck herrscht. Ferner ist erfindungsgemäß auch kein Überdruck über dem Strahlmittel erforderlich, durch den das Strahlmittel in das Strahlrohr und weiter auf das zu strahlende Werkstück transportiert wird. Dies ist ein wesentlicher Unterschied zum Stand der Technik, der einen Kompressor benötigt. Der Transport erfolgt erfindungsgemäß allein aufgrund der Wirkung des Unterdruckes in der Umgebung des zu strahlenden Objekts, d.h. am Austritt des Strahlrohres, durch den Luft durch das Strahlrohr gesaugt wird, welche das aus dem Behälter strömende Strahlmittel mitreisst.In order to ensure a free discharge of the blasting agent from the container under the action of gravity, no negative pressure may occur in the container above the blasting medium. It is therefore necessary to provide ventilation openings on the container or lid so that ambient pressure prevails in the container at least above the blasting medium. Furthermore, according to the invention, no overpressure over the blasting medium is required, through which the blasting agent enters the blast pipe and continues to be transported to the workpiece to be blasted. This is a significant difference from the prior art which requires a compressor. The transport is carried out according to the invention solely due to the effect of the negative pressure in the environment of the object to be irradiated, ie at the outlet of the jet pipe, is sucked through the air through the jet pipe, which entrains the flowing from the container blasting agent.

Am Behälter 8 (wie dargestellt) oder an dem Gehäuse 7 der Strahlrohreinheit ist ferner vorzugsweise eine Halteeinrichtung (hier in Form eines Haltebügels 8D) vorgesehen, an der die Strahlrohreinheit in Position mit aufrecht stehendem Behälter aufgehängt werden kann.On the container 8 (as shown) or on the housing 7 of the jet pipe unit further preferably a holding device (here in the form of a holding bracket 8D) is provided, on which the jet pipe unit can be suspended in position with standing upright container.

Um den Füllstand im Behälter erkennen zu können kann dieser ganz oder teilweise aus einem zumindest teilweise transparenten Material gefertigt sein oder ein Sichtfenster aufweisen.In order to be able to recognize the fill level in the container, this can be wholly or partially made of an at least partially transparent material or have a viewing window.

In einer nicht dargestellten Erweiterung kann an dem Verbindungsbereich zwischen dem Behälter 8 zur Aufnahme von Strahlmittel und der Strahlrohreinheit 5 eine zum Strahlrohr 6 beispielsweise um 45° geneigte Schwenkebene vorgesehen sein, in der der Behälter 8 relativ zum Strahlrohr 6 um eine zur Längsachse des Strahlrohrs 6 unter einem Winkel orientierte Achse dreh- bzw. verschwenkbar ist. Bei dieser Variante kann das Strahlrohr 6 gegenüber der Horizontalen geneigt werden, während der Behälter 8 durch Verschwenken in der geneigten Ebene immer noch im wesentlichen vertikal angeordnet sein kann. Damit kann das Strahlmittel auch bei geneigtem Strahlrohr im wesentlichen ungehindert aus dem Behälter in den Einlauf ausströmen.In an extension, not shown, can be provided at the connection region between the container 8 for receiving blasting agent and the jet pipe unit 5 to the jet pipe 6, for example, inclined by 45 ° pivoting plane in which the container 8 relative to the jet pipe 6 to a longitudinal axis of the jet pipe. 6 Angled axis is rotatable or pivotable. In this variant, the jet pipe 6 can be inclined relative to the horizontal, while the container 8 can still be arranged substantially vertically by pivoting in the inclined plane. Thus, the blasting agent can flow out of the container into the inlet, even with an inclined jet pipe substantially unhindered.

In einer nicht dargestellten Erweiterung kann für die Vorrichtung ein zusätzlicher Schlauch vorgesehen werden, der an einem Ende mit der Strahlrohreinheit an deren Einlauf verbunden werden kann und der an seinem anderen Ende ein Adapterstück mit einem Einlauf aufweist, das mit dem dann von der Strahlrohreinheit abgenommenen Behälter so koppelbar ist, dass der Auslauf des Behälters in einer bestimmten Entfernung über dem Einlauf des Adapterstücks positioniert ist und das Strahlmittel aus dem Behälter frei in den Einlauf des Adapterstücks auslaufen kann. Der Behälter kann dann in einer Entfernung von dem Strahlrohr an dem Haltebügel aufgehängt werden und ist mit der Strahlrohreinheit über den Schlauch verbunden, über welchen die Strahlmittelzufuhr erfolgt. Diese Erweiterung ist besonders sinnvoll, wenn Bereiche von Werkstücken zu bearbeiten sind, die mit der Strahlrohreinheit und darauf positioniertem Strahlmittelbehälter nicht zugänglich sind oder wenn "ÜberKopf"-Arbeiten zu erledigen sind, bei denen die Strahlrohreinheit nicht senkrecht gehalten werden kann.In an extension, not shown, an additional hose can be provided for the device, which can be connected at one end to the jet pipe unit at the inlet and at its other end has an adapter piece with an inlet, which with the then removed from the jet pipe unit container Can be coupled so that the outlet of the container at a certain distance is positioned over the inlet of the adapter piece and the blasting agent from the container can leak freely into the inlet of the adapter piece. The container may then be hung at a distance from the jet pipe to the headband and is connected to the jet pipe unit via the hose through which the blasting agent supply takes place. This extension is particularly useful when machining areas of workpieces that are inaccessible with the jet tube assembly and blasting media container positioned thereon, or when performing "overhead" work where the jet tube assembly can not be held vertically.

Die evakuierbare Kammer 2 besitzt eine zweite, größere Öffnung 1, die der Zugangsöffnung 4 für das Strahlrohr 6 etwa gegenüberliegt und mit der die Kammer auf ein zu bearbeitendes Werkstück aufsetzbar ist. Eine elastische Dichtung 1A zum Abdichten des Zwischenraums zwischen dem Außenumfang der Öffnung 1 und dem Werkstück ist an der Kammereinheit angebracht. Indem die Dichtung mit einem großen elastischen Wulst oder Rand ausgebildet ist kann die Kammereinheit trotz einer gewissen Beweglichkeit immer noch einen abdichtenden Kontakt mit der Werkstückoberfläche beibehalten und definiert so den Bearbeitungsbereich.The evacuatable chamber 2 has a second, larger opening 1, which is approximately opposite the access opening 4 for the jet pipe 6 and with which the chamber can be placed on a workpiece to be machined. An elastic seal 1A for sealing the gap between the outer periphery of the opening 1 and the workpiece is attached to the chamber unit. By having the seal formed with a large elastic bead or rim, the chamber unit can still maintain a sealing contact with the workpiece surface, despite some flexibility, thus defining the processing area.

Die Kammereinheit 2 besitzt wie in Fig. 1 und 2 gezeigt eine weitere, dritte Öffnung 3A zum Anschluss einer Einrichtung zum Absaugen von Luft aus der Strahlkammer 2A, um darin den zum Betrieb der Vorrichtung erforderlichen Unterdruck zu erzeugen. Die Öffnung 3A kann in Form einer Schlauchtülle mit oder ohne zusätzliche Verbindungseinrichtung zum Fixieren eines Schlauches, beispielsweise einer Steckverbindung oder einer Verriegelungsverbindung wie einer Bajonett- oder Rastverbindung ausgeführt sein. Besonders vorteilhaft an der gezeigten Ausführungsform, bei der die Öffnung 3A am Ende eines von der Strahlkammer 2A unter einem Winkel abgehenden Rohrstutzen 3 vorgesehen ist, ist die Möglichkeit, den Rohrstutzen als Handgriff zum Halten der dann von Hand einfach handhabbaren Kammereinheit zu verwenden. In einer besonders bevorzugten Ausführungsform ist dieser Rohr- bzw. Anschlussstutzen 3 so ausgebildet, dass ein handelsüblicher Staubsauger, gegebenenfalls unter Verwendung eines Zwischenstücks und/oder Verbindungsschlauches angeschlossen werden kann.The chamber unit 2 has as in Fig. 1 and 2 11 show a further, third opening 3A for connecting a device for extracting air from the blasting chamber 2A in order to generate therein the negative pressure required for the operation of the device. The opening 3A may be in the form of a hose nozzle with or without additional connection means for fixing a hose, for example a plug connection or a locking connection such as a bayonet or latching connection. Particularly advantageous in the embodiment shown, in which the opening 3A is provided at the end of an outgoing of the blasting chamber 2A at an angle pipe socket 3, the possibility of the pipe socket as a handle for holding the then by hand easy to use chamber unit to use. In a particularly preferred embodiment of this pipe or connecting piece 3 is designed so that a commercially available vacuum cleaner, optionally using an intermediate piece and / or connecting hose can be connected.

Die Kammereinheit 2 kann an sich aus beliebigem Material wie Metall oder Kunststoff und in beliebiger Form gefertigt sein, solange die gesamte Konstruktion dem zu erwartenden Unterdruck im Inneren der Strahlkammer 2A und der abrasiven Wirkung des verwendeten Strahlmittels soweit gewünscht widersteht. Die Herstellung als bis auf die Dichtungen vorzugsweise einteiliges Kunststoffspritzgießteil bietet sich allerdings aus Kostengründen an. Ferner ist die Verwendung eines transparenten Kunststoffes vorteilhaft, weil dann eine Beobachtung des Arbeitsbereiches Im Einsatz von allen Seiten gewährleistet ist, ohne die Kammereinheit von der Bearbeitungsstelle abnehmen zu müssen. Alternativ könnte bei einem nicht oder wenig-transparenten Material eines oder mehrere Sichtfenster vorgesehen werden.The chamber unit 2 can be made of any material such as metal or plastic and in any form per se, as long as the entire construction withstands the expected negative pressure inside the blasting chamber 2A and the abrasive effect of the abrasive used as desired. However, the production as a one-piece up to the seals preferably one-piece Kunststoffspritzgießteil offers itself for cost reasons. Furthermore, the use of a transparent plastic is advantageous, because then an observation of the work area is ensured in use from all sides without having to remove the chamber unit from the processing site. Alternatively, one or more viewing windows could be provided for a non-or slightly transparent material.

Die Erzeugung des Unterdrucks in der Strahlkammer 2A ist dann möglich, wenn die Bearbeitungsöffnung 1 der Kammereinheit 2 unter Herstellung der Abdichtung mittels der Dichtung 1A auf eine Fläche aufgesetzt ist, das Strahlrohr 6 durch die Zugangsöffnung 4 eingeführt ist und die Austrittsöffnung 6A an dem Strahlrohr 6 für das Strahlmittel sich innerhalb der Strahlkammer 2A befindet und die Absaugvorrichtung arbeitet und Luft aus dem Innenraum der Strahlkammer 2A absaugt. Die Kammer muss aber nicht vollständig luftdicht geschlossen sein. Maßgeblich ist eine solche Abdichtung, dass während des Betriebs im Inneren der Strahlkammer 2A immer noch ein ausreichender Unterdruck durch Evakuierung erzielt werden kann. Im Betrieb wird dann durch die Lufteinlaßöffnung 11 der Strahlrohreinheit Umgebungsluft angesaugt und durch das Strahlrohr 6 in die Strahlkammer 2A transportiert. Unter der Wirkung des Unterdrucks in der Strahlkammer 2A wird dabei auch das Strahlmittel vom Behälter 8 über den Einlauf 9 in die Strahlrohreinheit angesaugt und zusammen mit der Luft durch das Strahlrohr in den Innenraum der Strahlkammer 2A gerissen und dort aus der Austrittsöffnung 6A ausgestoßen. Um eine zufriedenstellende Ansaugung des Strahlmittels zu erreichen ist das zum Einlauf 9 führende Rohrstück des Verbindungsstückes 12 vorzugsweise unter einem spitzen Winkel zur Längs- bzw. Luftströmungsrichtung angebracht.The generation of the negative pressure in the blasting chamber 2A is possible when the processing opening 1 of the chamber unit 2 is placed on a surface by making the seal by means of the gasket 1A, the blast pipe 6 is inserted through the access opening 4, and the exhaust opening 6A on the blast pipe 6 for the blasting agent is located within the blasting chamber 2A and the suction works and sucks air from the interior of the blasting chamber 2A. However, the chamber does not have to be completely hermetically sealed. Decisive is such a seal that during operation inside the blasting chamber 2A still sufficient vacuum can be achieved by evacuation. In operation, ambient air is then drawn in through the air inlet opening 11 of the jet tube unit and transported through the jet tube 6 into the jet chamber 2A. Under the action of the negative pressure in the blasting chamber 2A, the blasting agent is also removed from the container Sucked 8 through the inlet 9 in the jet pipe unit and torn together with the air through the jet pipe into the interior of the jet chamber 2A and ejected there from the outlet opening 6A. In order to achieve a satisfactory suction of the blasting agent is leading to the inlet 9 pipe section of the connecting piece 12 is preferably mounted at an acute angle to the longitudinal or air flow direction.

Durch entsprechende Führung der Strahlrohreinheit kann das in der Kammer befindliche Werkstück bzw. die durch die Bearbeitungsöffnung 1 definierte und umgrenzte Bearbeitungsstelle gezielt bearbeitet werden. Durch eine Veränderung der Absaugleistung kann die Strahlungsleistung auf einfache Weise variiert werden. Durch die Absaugung bei der Erzeugung des Unterdrucks wird gleichzeitig das verbrauchte Strahlmittel mit abgesaugt so dass eine weitere zusätzliche Absaugung wie bei herkömmlichen Strahlanlagen, die mit Überdruck bzw. komprimierter Luft als Transportmedium für das Strahlmittel arbeiten, entfallen.By appropriate guidance of the jet pipe unit, the workpiece located in the chamber or the machining point defined and bounded by the machining opening 1 can be specifically processed. By changing the suction power, the radiant power can be varied easily. By the suction during the generation of the negative pressure, the spent blasting agent is sucked in at the same time so that a further additional suction as in conventional blasting systems, which work with excess pressure or compressed air as the transport medium for the blasting agent, omitted.

Claims (9)

  1. A device for abrasive-blasting of workpieces, comprising
    a chamber unit (2) with a blasting chamber (2A) having a first opening (4), a second opening (1), and a third opening (3A), wherein said chamber unit (2) can be placed with said second opening (1) onto a workpiece that is to be treated, and said third opening (3A) allows to connect a device for the evacuation of air from the blasting chamber (2A);
    a blasting pipe unit (5) with a blasting pipe (6) which can be inserted through the first opening (4) into the blasting chamber (2A); and
    a container (8) for the accommodation of blasting material which is connected with said blasting pipe unit (5) in such a manner that said blasting material is moved out of the container (8) and through the blasting pipe (6) into the blasting chamber (2A) by means of the effect of the reduced pressure generated, in operation, in the blasting chamber (2A);
    characterized in that
    said container (8) for the accommodation of blasting material is mounted, or can be mounted, to the blasting pipe unit (5) in such a manner that said blasting material can freely flow out of the container (8) into an inlet (9) of the blasting pipe unit (5); and
    said blasting pipe unit (5) has an air inlet opening (11) for ambient air, and the blasting pipe (6) communicates with the air inlet opening (11) and with the inlet (9) for the blasting material
  2. The device for abrasive-blasting of workpieces in accordance with claim 1, wherein the blasting pipe unit (5) comprises a receptacle (8B), which removably affixes the container (8) to the blasting pipe unit (5) in such a manner that an outlet (13) of the container (8) for the blasting material is located at a pre-specified distance above the inlet (9).
  3. The device for abrasive-blasting of workpieces in accordance with claim 2, wherein the blasting material container (8) comprises a metering unit (10) for adjusting the amount of blasting material that exits through the outlet (13).
  4. The device for abrasive-blasting of workpieces in accordance with one of the preceding claims, wherein an elastic gasket (1A) is provided for sealing the intermediate space between the circumference of the second opening (1) and said workpiece.
  5. The device for abrasive-blasting of workpieces in accordance with claim 4, wherein the second opening (1) is located approximately opposite the first opening (4) for the blasting pipe (6).
  6. The device for abrasive-blasting of workpieces in accordance with one of the preceding claims, wherein the opening (3A) for the connection of the evacuation device is provided on a pipe-connecting piece (3) protruding from the chamber unit (2), said pipe-connecting piece also acting as a handle for the chamber unit (2).
  7. The device for abrasive-blasting of workpieces in accordance with one of the preceding claims, wherein a gasket (4A) is provided on the first opening (4) for the blasting pipe (6) in order to create a seal with respect to the blasting pipe (6) when said blasting pipe is inserted into the first opening (4).
  8. The device for abrasive-blasting of workpieces in accordance with one of the preceding claims, wherein the chamber unit (2) is at least partially made of a transparent plastic material.
  9. The device for abrasive-blasting of workpieces in accordance with one of the preceding claims, wherein the container (8) for the accommodation of blasting material is mounted, or can be mounted, to the blasting pipe unit (5) in such a manner that said container can be rotated or pivoted on an inclined plane relative to the blasting pipe (6).
EP06113714A 2005-05-09 2006-05-09 Device for abrasive blasting of workpieces Not-in-force EP1721705B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520007320 DE202005007320U1 (en) 2005-05-09 2005-05-09 Device for abrasive blasting of workpieces

Publications (2)

Publication Number Publication Date
EP1721705A1 EP1721705A1 (en) 2006-11-15
EP1721705B1 true EP1721705B1 (en) 2009-11-04

Family

ID=34745801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06113714A Not-in-force EP1721705B1 (en) 2005-05-09 2006-05-09 Device for abrasive blasting of workpieces

Country Status (4)

Country Link
US (1) US7226343B2 (en)
EP (1) EP1721705B1 (en)
AT (1) ATE447463T1 (en)
DE (2) DE202005007320U1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0514888D0 (en) * 2005-07-20 2005-08-24 Haslett Basil Glass etching
ITRA20060055A1 (en) * 2006-09-18 2008-03-19 Tecno Supply S R L METHOD AND RELATIVE PORTABLE EQUIPMENT FOR THE CLEANING OF SURFACES.
DE102006058679A1 (en) 2006-12-13 2008-06-19 Mtu Aero Engines Gmbh Device and method for surface blasting of a component of a gas turbine
US9039487B2 (en) * 2008-08-07 2015-05-26 Fuji Manufacturing Co., Ltd. Blasting method and apparatus having abrasive recovery system, processing method of thin-film solar cell panel, and thin-film solar cell panel processed by the method
US8801499B2 (en) * 2009-04-21 2014-08-12 Sharp Kabushiki Kaisha Blasting apparatus and method for blast processing
US20140373303A1 (en) * 2013-06-24 2014-12-25 Phuong Taylor Nguyen Padeye or Tie-Down Cleaning System
BR102014023615A2 (en) * 2014-08-08 2018-05-29 Ibix Srl SURFACE CLEANER
DE102017103300A1 (en) * 2017-02-17 2018-08-23 Tkr Spezialwerkzeuge Gmbh Universal adapter
CN109968140B (en) * 2019-03-21 2021-03-16 杜军 Collection finishing device based on production of nylon stick for metallurgical machinery
US11052510B2 (en) * 2019-04-01 2021-07-06 Tredco Metals, Llc Imprint device for imprinting a surface of an object to create an identification mark
CN110744454B (en) * 2019-12-02 2020-09-22 安徽风然家俱有限公司 Abrasive flow jet machining device
CN111168581B (en) * 2020-03-10 2021-08-06 济南大学 Shot blasting device and shot blasting method for steamship

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2305976A (en) * 1940-10-23 1942-12-22 Elliott W Mcknight Pressure gun
US2526403A (en) * 1946-09-05 1950-10-17 Jens A Paasche Abrasive gun
US3236459A (en) * 1963-12-16 1966-02-22 Thomas P Mcritchie Apparatus for spraying materials
GB1238323A (en) * 1968-07-20 1971-07-07
DE1807958A1 (en) 1968-11-08 1970-06-11 Boynton Thomas Edward Portable device for applying permanent marks to glass and correspondingly hard materials
US4048918A (en) * 1975-08-13 1977-09-20 Identicar Corporation Of America Stenciling apparatus and identification system
DE2750085C2 (en) * 1977-11-09 1979-12-13 Siemag Transplan Gmbh, 5902 Netphen Method and device for cooling billets
US4232487A (en) * 1978-05-25 1980-11-11 Knox Manufacturing Co. Abrading device
US4603515A (en) * 1980-12-22 1986-08-05 The United States Of America As Represented By The Secretary Of The Air Force Vacuum blast adapter for bombs
US4628644A (en) * 1984-01-05 1986-12-16 Steven Somers Abrasive material spraying apparatus
US4646480A (en) * 1985-10-23 1987-03-03 Inventive Machine Corporation Pressurized abrasive cleaning device for use with plastic abrasive particles
DE8600876U1 (en) * 1986-01-16 1987-02-19 Badur, Hans Guenter, 5305 Witterschlick, De
DE3740817A1 (en) 1987-12-02 1989-06-15 Josef Hartmann Abrasive-blasting device
US4829724A (en) * 1988-01-11 1989-05-16 Rohr Industries, Inc. Cutting abrasive feeder, demand type
GB9026607D0 (en) * 1990-12-06 1991-01-23 Williams N L Eng Ltd Apparatus for surface treatment
DE19614555C2 (en) * 1996-04-12 1998-11-26 Guenther Boehler Gmbh Device for the abrasive blasting of workpieces
DE19857143C1 (en) * 1998-12-11 2000-05-11 Schlick Heinrich Gmbh Co Kg Sand-blasting device has rotatable compressed air supply pipe and nozzle holder fitted on silo for guiding sand blasting nozzle unit in circular fashion over workpiece
DE10257241B4 (en) * 2001-01-23 2006-08-17 Pieper Innovationsgesellschaft Mbh Device, in particular workshop and / or Hobbysystem for processing, in particular vacuum suction of surfaces

Also Published As

Publication number Publication date
US7226343B2 (en) 2007-06-05
DE202005007320U1 (en) 2005-07-07
DE502006005277D1 (en) 2009-12-17
ATE447463T1 (en) 2009-11-15
EP1721705A1 (en) 2006-11-15
US20060252357A1 (en) 2006-11-09

Similar Documents

Publication Publication Date Title
EP1721705B1 (en) Device for abrasive blasting of workpieces
DE19747838C2 (en) Method and device for the dry removal of coatings, graffiti or other surface contaminants
EP0445500B1 (en) Shroud for a sand-blasting tool
DE4039092C1 (en)
DE2916131A1 (en) DEVICE FOR TREATMENT OF A SURFACE
EP1049566A2 (en) Suction device for sand blasting and pressure nozzles
DE102018127450A1 (en) Surface cleaning and engraving machine using vacuum blasting
DE19614555C2 (en) Device for the abrasive blasting of workpieces
EP1727674B1 (en) Vacuum unit for a device used to structure the surface of a workpiece by means of radiation
DE2654784A1 (en) EXHAUST CONNECTION FOR A SYSTEM FOR VACUUM CLEANING OR PNEUMATIC TRANSPORTATION
CH628093A5 (en) METHOD FOR APPLYING AN ANTI-RUST PROOF.
CH713471B1 (en) Device for cleaning, engraving or removing coatings, graffiti or other surface dirt using abrasive blasting media on parts, workpieces or surfaces.
EP3017933B1 (en) Device for laser buildup welding for the additive manufacture of three-dimensional objects
WO2016166085A1 (en) Dental milling machine
EP0664161A1 (en) Device for spraying liquids, particularly paints
EP0522485A1 (en) Processing apparatus for processing fine technical, especially dental technical workpieces in a machining chamber surrounded by a housing
EP1847368B1 (en) Method and device for radiation hardening
EP0350965A2 (en) Abrasive-blasting head for the blasting of large surfaces by particles carried in a jet of air
DE10257241B4 (en) Device, in particular workshop and / or Hobbysystem for processing, in particular vacuum suction of surfaces
AT523379B1 (en) Flat nozzle device
DE4407956A1 (en) Sand blasting box for flat material surfaces
EP2460592B1 (en) apparatus and system for the production of a seam
DE19527048C2 (en) Device for carrying out electron beam technological processes
WO2023006155A1 (en) Vacuum blasting machine featuring compressed-air injection, and abrasive blasting method using the vacuum blasting machine
DE202010017439U1 (en) Device for machining a sealing surface of a fitting

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20070510

17Q First examination report despatched

Effective date: 20070611

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GUENTHER BOEHLER GMBH

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VISONN GMBH & CO. KG

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502006005277

Country of ref document: DE

Date of ref document: 20091217

Kind code of ref document: P

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
LTIE Lt: invalidation of european patent or patent extension

Effective date: 20091104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100215

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100304

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100304

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100205

BERE Be: lapsed

Owner name: VISONN G.M.B.H. & CO. KG

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100505

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100509

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091104

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 447463

Country of ref document: AT

Kind code of ref document: T

Effective date: 20110509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110509

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180518

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180523

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20180523

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006005277

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191203

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531