EP1640077A2 - Device and method for cleaning and/or drying treatment of parts - Google Patents

Abstract

The cleaning device has workpiece holders (3) and a nozzle (4) mounted so that relative movement is possible between the nozzle outlet and the workpiece holder with a linear displacement in the direction of the rotational axis, a linear displacement perpendicular to the rotational axis, a swivel movement about an axis perpendicular to the rotational axis and a swivel movement about an axis parallel to the rotational axis. Independent claim describes method for treating or cleaning workpieces by moving the workpiece holder and/or nozzle so that a relative movement is possible between the nozzle outlet and workpiece holder in different motions.

Description

The present invention relates to a treatment device and a method for the cleaning and / or drying treatment of workpieces.

Treating devices for cleaning and / or drying treatment of workpieces are known from EP 0 507 294 B1 or WO 98/45059 A1, which have a treatment container, a workpiece carrier arranged in the treatment container and a nozzle device with at least one nozzle, wherein the nozzle a directed to the workpiece carrier outlet for a treatment medium, for example, a liquid cleaning medium or a gaseous drying medium possesses. The nozzle device or the workpiece carrier or both are rotatably mounted in the known devices about a common axis of rotation, so that the at least one nozzle and the workpiece carrier are movable relative to each other in a direction of rotation about the axis of rotation.

During a treatment process that can be carried out with such devices, the nozzle device rotates relative to one another with the at least one nozzle and the workpiece carrier, whereby cyclically recurring same regions of a workpiece picked up by the workpiece carrier or a workpiece basket for bulk material picked up by the workpiece carrier are exposed to the treatment medium.

No. 5,167,720 describes a device for the cleaning treatment of workpieces which has a workpiece carrier which is movable about an axis of rotation. The device also comprises a nozzle device which comprises a pivotable nozzle and which via a rail system in three mutually perpendicular direction is linearly displaceable.

The aim of the present invention is to provide a treatment device for the cleaning and / or drying treatment of workpieces, which enables a more effective treatment of workpieces with lower use of resources, and to provide a more effective, resource-saving treatment process.

This object is achieved by a treatment device having the features of claim 1 and by a treatment method having the features of claims 17 and 19. Advantageous embodiments of the invention are the subject of the dependent claims.

The treatment device according to the invention for the cleaning and / or drying treatment of workpieces comprises a treatment container, a workpiece carrier arranged in the treatment container and a nozzle device with at least one nozzle which has an outlet for a treatment medium directed onto the workpiece carrier. The workpiece carrier and the nozzle device are mounted such that the at least one nozzle and the workpiece carrier are movable relative to each other in a direction of rotation about a rotation axis.

• eine lineare Bewegung in Richtung der Rotationsachse,
• eine lineare Bewegung in einer Richtung senkrecht zu der Rotationsachse,
• eine Schwenkbewegung um wenigstens eine Achse senkrecht zu der Rotationsachse,
• eine Schwenkbewegung um wenigsten eine Achse parallel zu der Rotationsachse.

According to the invention, the workpiece carrier and the at least one nozzle are mounted such that, in addition to the rotating relative movement, a relative movement between the nozzle outlet and the workpiece carrier is possible, which has at least one of the following movements as at least one movement component:

• a linear movement in the direction of the axis of rotation,
• a linear movement in a direction perpendicular to the axis of rotation,
• a pivoting movement about at least one axis perpendicular to the axis of rotation,
• a pivoting movement about at least one axis parallel to the axis of rotation.

The term "treatment" below means both a cleaning treatment of the workpieces using a liquid cleaning medium and a drying treatment using a gaseous medium. The term "treatment medium" is thus to be understood below as meaning either a liquid cleaning medium, for example water with cleaning additives, preferably cleaning additives based on lye, or a gaseous drying medium, for example air. The pressure with which the cleaning medium is discharged via the outlet of the at least one nozzle in the direction of the workpiece carrier, inter alia, depends on the type of workpieces to be treated and can be up to 10 bar and more.

The treatment container may be pressure-resistant to allow the generation of a negative pressure during the cleaning or drying process, and may have a closable or controllable flow for the cleaning medium to allow the preparation of a cleaning bath surrounding the workpieces in the treatment vessel.

In devices according to the prior art, in which a nozzle device and a workpiece carrier rotate relative to each other during the treatment process about a common axis of rotation or pivot about the common axis of rotation relative to each other, the nozzle passes through a predetermined orbit with respect to the workpiece carrier, if workpiece carrier and / or Completely rotate the nozzle device 360 °, or a predetermined portion of a circular path when workpiece carrier and / or nozzle device are pivoted in a predetermined angular range about the axis of rotation. There are thus areas of the work piece carrier received by the workpiece or workpiece basket, which are never directly exposed to the particularly treatment-active, ie cleaning or drying active, beam of the treatment medium. In addition, in the known devices the jet of the treatment medium always strikes the same sections of the workpiece or workpiece basket at the same angle and is always guided at the same speed over identical sections of the workpiece / workpiece basket during a rotating relative movement of the workpiece carrier and the nozzle.

The device according to the invention, in which a relative movement between the nozzle outlet and the workpiece carrier in the direction of the axis of rotation, a relative pivotal movement between the nozzle outlet and the workpiece carrier about an axis perpendicular to the axis of rotation and / or a relative pivotal movement between the nozzle outlet and the workpiece carrier about an axis parallel to the axis of rotation is possible, allows in comparison to previous devices, a more effective treatment method with less resource consumption.

The arrangement of the nozzle and the workpiece carrier such that a relative movement between the nozzle outlet and workpiece carrier in the direction of the axis of rotation is possible, increases the area of the workpiece or the workpiece basket, which acts upon a rotating or pivoting relative movement between the workpiece carrier and nozzle of a single nozzle with treatment medium can be. This region of the workpiece / workpiece carrier acted upon by a nozzle with treatment medium is referred to below as the treatment surface.

Due to the enlarged in the inventive device treatment surface of a nozzle even nozzles can be saved in comparison to previous such treatment devices. The reduced number of nozzles means that the throughput of treatment medium, that is, the volume of the treatment medium exiting simultaneously from the nozzles, is reduced, whereby the amount of the treatment medium usually located in a reprocessing cycle can be reduced. The reduction in the amount of treatment medium to be maintained results in less treatment medium being required to be treated in the purification circuit and less energy required to maintain the treatment medium at a desired predetermined treatment temperature.

During the treatment process, the nozzles and the workpiece carrier are preferably cyclically reciprocated in the direction of the axis of rotation relative to each other. The speed at which the workpiece carrier and the nozzle rotate relative to each other and the cyclic linear oscillatory movement between the nozzle and the workpiece carrier in the direction of the axis of rotation are preferably coordinated so that the time during which the nozzle and the workpiece carrier rotate by 360 ° relative to one another integer multiple of the period of the oscillation movement is. This ensures that during each new revolution of the nozzle to the workpiece carrier or the workpiece carrier below the nozzle other areas of the workpiece / workpiece carrier are subjected to treatment medium than in the previous rotation.

The oscillating relative movement between nozzle or nozzle outlet and workpiece carrier in the direction linear to the axis of rotation also causes the direction in which the beam of the treatment medium, the workpiece / the workpiece carrier sweeps, cyclically changes, which in addition to a enlarged treatment area also leads to an additional cleaning active effect.

The relative movement between the at least one nozzle and the workpiece carrier in the direction of the axis of rotation is made possible, for example, by the entire nozzle device being displaceably mounted in the direction of the axis of rotation, or in that a nozzle tube of the nozzle device on which the at least one nozzle is arranged Is mounted displaceable axis of rotation. In addition, it is also possible, the entire workpiece carrier or a receptacle on the workpiece carrier, which serves to accommodate the workpiece / workpiece basket, slidably store in the direction of the axis of rotation.

An enlargement of the treatment surface of a nozzle is also achieved in that the workpiece carrier and the nozzle outlet of the at least one nozzle are mounted so that they are pivotable relative to each other about an axis perpendicular to the axis of rotation. By this relative pivoting movement, the area of the workpiece / workpiece basket increases in the direction of the axis of rotation, which can be acted upon by a nozzle with treatment medium. In addition, by such a pivoting movement of the impact angle under which a jet of the treatment medium from the nozzle to the workpiece / the workpiece basket hits, be varied, resulting in an additional treatment-active effect.

The relative pivotal movement about the axis perpendicular to the axis of rotation occurs cyclically during the treatment process, when the nozzle and the workpiece carrier rotate relative to each other about the axis of rotation.

The relative pivoting movement between the nozzle or the nozzle outlet and the workpiece carrier or a receptacle of the workpiece carrier for the workpiece / workpiece basket is in one embodiment of the treatment device according to the invention ensured that the workpiece carrier or the workpiece receiving device is pivotally mounted about an axis perpendicular to the axis of rotation extending axis. In a further embodiment, it is provided that the nozzle device has at least one tube, on which the at least one nozzle is arranged, and that this tube is pivotally mounted about an axis extending parallel to the axis of rotation. Furthermore, it is also possible to store the nozzle itself pivotally on the nozzle tube.

The arrangement of the nozzle and the workpiece carrier such that the nozzle and the workpiece carrier or a receiving device of the workpiece carrier are mounted pivotably relative to each other about an axis parallel to the axis of rotation axis allows a variation of the angle of incidence between a jet emerging from the nozzle of the treatment medium and a workpiece / workpiece basket received by the workpiece carrier in the direction of the rotating relative movement between workpiece carrier and nozzle.

The pivoting relative movement between the nozzle outlet and the workpiece carrier is possible in one embodiment of the treatment device according to the invention in that the nozzle is arranged on a nozzle tube which is pivotably mounted about an axis parallel to the axis of rotation of the workpiece carrier or the nozzle device. In a further embodiment of the invention it is provided that a workpiece receiving device of the workpiece carrier is pivotally mounted pivotably about an axis extending parallel to the axis of rotation axis. In addition, there is also the possibility of pivotally supporting the nozzle itself on the nozzle tube in order to allow such a relative pivoting movement between the nozzle outlet and the workpiece carrier or the workpiece receiving device about an axis parallel to the axis of rotation.

The treatment device according to the invention is preferably designed such that at least two of the previously explained Relative movements between the nozzle outlet and the workpiece carrier: a linear relative movement in the direction of the axis of rotation, a pivoting relative movement about an axis perpendicular to the axis of rotation or a pivoting relative movement about an axis parallel to the axis of rotation are possible. By superimposing at least two of these relative movements, the treatment-active effects resulting from these respective relative movements are combined. In a combination of the linear relative movement in the direction of the axis of rotation or the relative pivotal movement about the axis perpendicular to the axis of rotation with the relative pivotal movement parallel to the axis of rotation, the movement of the treatment beam on the surface of the workpiece or workpiece basket can be controlled so that the treatment beam circular is moved over the workpiece or Werkstückkorboberfläche, resulting in simultaneous rotation of the nozzle to the workpiece carrier or the workpiece carrier below the nozzle to a "spiral" path of the treatment beam over the workpiece surface or Werkstückkorboberfläche.

Figur 1

zeigt im Querschnitt eine Behandlungsvorrichtung mit einem Behandlungsbehälter, einer Düsenvorrichtung und einem Werkstückträger.

Figur 2

zeigt vergrößerte Ausschnitte der Anordnung gemäß Figur 1.

Figur 3

veranschaulicht die Position eines aus einer Behandlungsdüse austretenden Behandlungsstrahls in Bezug auf die Rotationsachse bei einer periodischen Oszillationsbewegung der Düse in Richtung der Rotationsachse (Figur 3a), den Winkel, unter dem der Behandlungsstrahl von der Rotationsachse abweicht (Figur 3b) und den Winkel, den der Behandlungsstrahl mit der Rotationsachse bzw. einer zu der Rotationsachse parallelen Achse einschließt.

Figur 4

zeigt ausschnittsweise eine Düsenvorrichtung, die eine Relativbewegung zwischen Düse und Werkstückträger in Richtung der Rotationsachse ermöglicht.

Figur 5

veranschaulicht die Winkelgeschwindigkeit der relativen Rotationsbewegung zwischen Düse und Werkstückträger abhängig vom Rotationswinkel für ein Ausführungsbeispiel des erfindungsgemäßen Behandlungsverfahrens.

Figur 6

zeigt ein Ausführungsbeispiel für eine Düsenvorrichtung, die eine relative Schwenkbewegung zwischen einer Düse und dem Werkstückträger um eine Achse senkrecht zu der Rotationsachse ermöglicht.

Figur 7

veranschaulicht die Position eines aus einer Düse austretenden Behandlungsstrahls bezogen auf die Rotationsachse bei einer oszillierenden Schwenkbewegung der Düse um eine Achse senkrecht zu der Rotationsachse (Figur 7a), eine Abweichung des Behandlungsstrahls von der Rotationsachse (Figur 7b) eine Variation des Auftreffwinkels des Behandlungsstrahls bezogen auf die Rotationsachse.

Figur 8

zeigt einen Werkstückträger mit einer senkrecht zu der Rotationsachse schwenkbar gelagerten Werkstückaufnahme.

Figur 9

zeigt einen vergrößerten Ausschnitt der Vorrichtung nach Figur 8.

Figur 10

zeigt ein Ausführungsbeispiel einer erfindungsgemäßen Behandlungsvorrichtung mit einer schwenkbar an einem Düsenrohr angeordneten Düse.

Figur 11

zeigt die Düse gemäß Figur 10 vergrößert im Querschnitt.

Figur 12

zeigt ausschnittsweise ein Ausführungsbeispiel einer erfindungsgemäßen Behandlungsvorrichtung mit einem Düsenrohr, das schwenkbar um eine parallel zur Rotationsachse verlaufende Achse gelagert ist.

Figur 13

veranschaulicht die Abweichung eines aus einer Düse austretenden Behandlungsstrahls in Bezug auf die Rotationsachse bei einer oszillierenden Schwenkbewegung des Düsenrohrs gemäß Figur 12.

Figur 14

zeigt ausschnittsweise im Querschnitt einen Werkstückträger mit einer Werkstückaufnahmevorrichtung, die schwenkbar um eine parallel zur Rotationsachse verlaufende Achse gelagert ist.

Figur 15

veranschaulicht die Position eines Behandlungsstrahls bezogen auf die Rotationsachse bei einer Überlagerung zweier erfindungsgemäßer relativer Bewegungen.

Figur 16

zeigt eine Behandlungsvorrichtung, bei der eine Welle des Werkstückträgers auf einer Kreisbahn gelagert ist.

Figur 17

zeigt ein Ausführungsbeispiel für einen Werkstückträger mit einer sich auf einer Kreisbahn bewegenden Rotationsachse eines Werkstückes/Werkstückkorbes.

In den Figuren bezeichnen, sofern nicht anders angegeben, gleiche Bezugszeichen gleiche Teile mit gleicher Bedeutung.The present invention will be explained in more detail with reference to figures.

FIG. 1

shows in cross section a treatment device with a treatment container, a nozzle device and a workpiece carrier.

FIG. 2

shows enlarged sections of the arrangement according to FIG. 1.

FIG. 3

FIG. 3a illustrates the position of a treatment jet emerging from a treatment nozzle with respect to the axis of rotation during a periodic oscillatory movement of the nozzle in the direction of the axis of rotation (FIG. 3a), the angle at which the treatment beam deviates from the axis of rotation (FIG. 3b) and the angle which the treatment beam encloses with the axis of rotation or with an axis parallel to the axis of rotation.

FIG. 4

shows a detail of a nozzle device which allows a relative movement between the nozzle and the workpiece carrier in the direction of the axis of rotation.

FIG. 5

illustrates the angular velocity of the relative rotational movement between nozzle and workpiece carrier depending on the angle of rotation for an embodiment of the treatment method according to the invention.

FIG. 6

shows an embodiment of a nozzle device that allows relative pivotal movement between a nozzle and the workpiece carrier about an axis perpendicular to the axis of rotation.

FIG. 7

FIG. 7a shows a deviation of the treatment beam from the axis of rotation (FIG. 7b) a variation of the angle of incidence of the treatment beam relative to the axis of rotation with respect to the rotation axis during an oscillating pivot movement of the nozzle about an axis perpendicular to the axis of rotation the axis of rotation.

FIG. 8

shows a workpiece carrier with a perpendicular to the axis of rotation pivotally mounted workpiece holder.

FIG. 9

shows an enlarged section of the device of Figure 8.

FIG. 10

shows an embodiment of a treatment device according to the invention with a nozzle arranged pivotally on a nozzle tube.

FIG. 11

shows the nozzle of Figure 10 enlarged in cross section.

FIG. 12

shows a detail of an embodiment of a treatment device according to the invention with a nozzle tube which is pivotally mounted about an axis parallel to the axis of rotation extending axis.

FIG. 13

FIG. 12 illustrates the deviation of a treatment beam emerging from a nozzle with respect to the axis of rotation during an oscillating pivoting movement of the nozzle tube according to FIG. 12.

FIG. 14

shows a detail in cross-section a workpiece carrier with a workpiece receiving device which is pivotally mounted about an axis parallel to the axis of rotation extending axis.

FIG. 15

illustrates the position of a treatment beam with respect to the axis of rotation at a superposition of two inventive relative movements.

FIG. 16

shows a treatment device in which a shaft of the workpiece carrier is mounted on a circular path.

FIG. 17

shows an embodiment of a workpiece carrier with a moving on a circular path axis of rotation of a workpiece / workpiece basket.

In the figures, unless otherwise indicated, like reference numerals designate like parts with the same meaning.

1a and 1b illustrate the basic structure of a treatment device according to the invention comprising a treatment tank 1, a nozzle device 2 arranged in the treatment tank 1 with at least one nozzle 4 and a workpiece carrier 3 arranged in the treatment tank 1 for receiving a workpiece / workpiece basket 5. FIG. 1a shows the device in a cross section parallel to a rotation axis A-A and FIG. 1b shows the device in cross section through a section plane I-I drawn in FIG. 1a, which runs perpendicular to the axis of rotation A-A.

The nozzle device 2 according to FIG. 1 a has two nozzle tubes 22 which each have a plurality of nozzles 4 with nozzle outlets 41 (FIG. 2 a) directed onto the workpiece carrier 3. The workpiece carrier 3 and the nozzle device 2 are mounted such that the nozzles 4 or the nozzle outlets 41 and the workpiece carrier 3 can rotate relative to each other about the axis of rotation A-A. For this purpose, in the device according to FIG. 1a, both the nozzle device 2 are rotatably mounted about the axis of rotation A by means of a first shaft 21, and the workpiece carrier 3 is likewise rotatably mounted about the axis of rotation A-A by means of a second shaft 31. In a manner not shown, of course, there is also the possibility to store the nozzle device 2 rotating and to arrange the workpiece carrier 3 fixed in the treatment tank 1 or to store the workpiece carrier 3 rotating about the rotation axis A-A and to arrange the nozzle device 2 fixed.

In addition, it is sufficient for the nozzle device 2 only a substantially parallel to the axis of rotation AA extending nozzle tube 22 provided with nozzles 4, which is why one of the two tubes is shown in dashed lines in Figure 1a. A substantially perpendicular to the axis of rotation AA extending Connecting tube 23 of the nozzle device 2, which connects the nozzle tube 22 to the shaft 21, may also have nozzles 4, which is shown in dashed lines in Figure 1a. The shaft 21 of the nozzle device 2 simultaneously serves as a supply for a treatment medium from outside the treatment tank 1 into the treatment tank.

In the apparatus according to FIG. 1 a, the shaft 21 of the nozzle device 2 and the shaft 31 of the workpiece carrier 3 are led out of the treatment container 1 on opposite sides. However, in a known manner it is also possible to guide the shaft 21 for the nozzle device 2 and the shaft 31 for the workpiece carrier 3 together on one side of the treatment container 1, which is described, for example, in the already mentioned EP 0 507 294 B1.

The workpiece carrier 3 serves to receive a workpiece 5 to be cleaned or a workpiece basket 5 with workpieces arranged therein, wherein the workpieces in the workpiece basket 5 can be either bulk material or individual workpieces.
FIG. 2a shows an enlarged section of the device according to FIG. 1, wherein only the nozzle tube 22 with a nozzle 4 and the workpiece 5 or the workpiece basket 5 are shown.

The direction of the axis of rotation AA is designated below by x, and α is referred to below as an angle extending straight line or a treatment jet emerging from the nozzle outlet 41 of the nozzle 4, which is illustrated by a dot-dash line in FIG , with the axis of rotation AA or with an axis parallel to the axis of rotation AA axis includes. In prior art treatment devices, this angle α is usually 90 °.

FIG. 2b shows an enlarged detail of the illustration according to FIG. 1b, wherein only the nozzle tube 22 with a nozzle 4 and the workpiece / the workpiece basket 5 are shown. In the following text, γ denotes an angle by which a treatment jet emerging from the nozzle outlet 41 deviates from a connecting line between the nozzle outlet 41 and the axis of rotation A-A, or a line running parallel thereto.

In previously known devices, the nozzle outlets 41 of the nozzles 4 are always arranged so that the treatment beams are directed centrally on the axis of rotation A-A, so that for these known devices γ = 0 applies.

During the treatment process that can be carried out with the device according to FIG. 1, the nozzle device 2 and the workpiece carrier 3 rotate relative to each other about the axis of rotation A-A, whereby, for example, the two devices rotate in opposite directions about the rotation axis A-A or one of the two devices 2, 3 rotates. The term "relative rotational movement about the axis of rotation A-A" is to be understood below as a pivoting movement, by which the nozzle device 2 and / or the workpiece carrier 3 are respectively pivoted only within a predetermined angular range of the rotation angle designated below by φ.

In addition to this relative rotational movement between nozzle device 2 or nozzle 4 and workpiece carrier 3, the treatment device according to the invention allows in one embodiment a linear relative movement between the nozzles 4 and the nozzle outlets 41 and the workpiece carrier 3 or the workpiece / workpiece basket 5 received in the workpiece carrier 3 Direction of the axis of rotation AA.

This linear relative movement is made possible in the embodiment of the treatment device according to FIG. 1 a in that the nozzle device 2 is displaceable in the direction of the axis of rotation AA is mounted and / or that the workpiece carrier 3 is slidably mounted in the direction of the axis of rotation AA. A displaceable in the direction x of the axis of rotation AA storage of the nozzle device 2 is effected in that the shaft 21 of the nozzle device 2, which is guided through a recess 11 of the treatment container 1, not only rotatable within this recess 11, but also in the direction of the axis of rotation AA is stored. Accordingly, the shaft 31 of the workpiece carrier 3, which projects through a recess 12 of the treatment container 1, not only rotatable in this recess 12, but also slidably mounted in the direction of the axis of rotation AA.

While in previous treatment devices, the nozzle outlet 41 rotates on a predetermined circular path relative to the treatment tank 3, the present invention relative mobility between the nozzle outlet 41 and workpiece carrier 3 in the direction of the axis of rotation AA a significantly enlarged area exists, directly on the nozzles 4 with treatment medium can be applied. During the rotating relative movement between the nozzle 4 and workpiece carrier 3, the nozzle 4 and the workpiece carrier 3 are preferably reciprocated periodically in the direction of the axis of rotation, which will be explained below.

With reference to FIG. 2a, x0 denotes a position in the direction of the axis of rotation A-A, which lies in the extension of the nozzle outlet 41 or in extension of a treatment jet emerging from the nozzle outlet 41. Δx hereinafter refers to the stroke by which the nozzle outlet 41 is displaceable relative to the workpiece / workpiece basket 5 in the direction of the axis of rotation.

During the treatment process, the nozzle 4 or the nozzle outlet 41 is periodically reciprocated relative to the workpiece / workpiece basket 5 by this stroke Δx. This periodic linear relative movement is superimposed by the rotating one FIG. 3a illustrates the position of the nozzle outlet 41 in the x direction starting from the starting point x0 for a relative rotation of workpiece / workpiece basket 5 and nozzle 4 through 360 °. In the example, it is assumed that the time required for a relative rotation of nozzle 4 and workpiece 5 by 360 ° is not an integer multiple of the period of the oscillating linear motion, whereby the jet of the treatment medium emerging from the nozzle 4 with each new revolution other areas of the workpiece / workpiece carrier 5 sweeps over than in the previous revolution. This can be seen in Figure 3a in that the x-position of the nozzle outlet 41 is shown for two consecutive revolutions, wherein the course during the second revolution is shown in dashed lines.

In contrast to known devices, in which the nozzle 4 always assumes the position x0 irrespective of the angular position of the relative rotation between the nozzle 4 and the workpiece 5 in the direction of the axis of rotation AA, the cleaning jet in the treatment device according to the invention covers a significantly larger area over several revolutions of the workpiece / workpiece basket 5. In this way, even cleaning nozzles can be saved compared to conventional devices, which leads to a reduced resource consumption in the manner explained in the introduction. Moreover, the fact that the cleaning beam periodically changes its direction in the x direction results in an additional treatment-active effect, in particular during a cleaning process in which cleaning liquid is discharged from the nozzles onto the workpiece / work basket 5. The speed at which the nozzle 4 and the workpiece / work basket 5 are reciprocated relative to each other in the direction of the rotation axis AA can be constant until the point of reversal of the oscillation movement. In addition, there is also the possibility of this speed of relative Linear movement between the nozzle 4 and the workpiece / workpiece basket 5 to vary within a Bewegungszyklusses.

With reference to Figures 3b and 3c, in a mere linear relative movement between nozzle 4 and workpiece / workpiece basket 5, the angle of incidence α = 90 °, while the deviation γ between the treatment beam and the axis of rotation A-A is zero.

FIG. 4 shows a detail of an exemplary embodiment of a further nozzle device 2 which enables a linear relative movement between the nozzles 4 or the nozzle outlets 41 and the workpiece / workpiece basket 5. The nozzle tube 22 arranged essentially parallel to the shaft 21 (FIG. 1 a) has a two-part construction and has a first section 221 fixedly connected to the connecting tube 23 and a second section 222 displaceably arranged within this fixed section 221 in the direction of the axis of rotation AA Nozzles 4 are arranged, for example, as bores or slots in the tubular second section 222.

The slidable portion 222 has a smaller diameter than the fixed portion 221 and is disposed with one end inside the fixed portion 221. The slidable portion 222 has at this one end a neck or flange 225, which neck 225 in conjunction with lugs or flanges of the fixed pipe section 221 serves to limit the displacement of the second pipe section 222 within the first pipe section 221. The distance between the two flanges or lugs 223, 224 of the fixed pipe section 221 determines the stroke of the linear relative movement of the nozzles 4 and nozzle outlets 41 relative to the workpiece / workpiece basket 5 in the direction of the axis of rotation AA.

In particular, to enhance the cleaning effect when performing a cleaning treatment is provided in an embodiment of the method according to the invention, the rotational speed at which the nozzle 4 and the workpiece / the workpiece basket 5 rotate relative to each other to vary. This variation of the angular velocity dφ / dt is preferably carried out periodically, as shown in FIG. 5, where the angular velocity dφ / dt is plotted against the angle of rotation φ. This periodic variation of the angular velocity leads to a permanent change in the speed with which the treatment beam is moved over the workpiece / workpiece basket 5, resulting in addition to the mere impact of the treatment beam on the workpiece 5, an additional positive cleaning effect. The change in the angular velocity in this method is carried out several times during a rotational movement in one direction and is also applicable to a relative pivotal movement between the nozzle 4 and workpiece 5 about the axis of rotation A-A, in which case the angular velocity is varied several times while the pivoting movement is in one direction.

Instead of slidably supporting the nozzle 4 and the workpiece carrier 3 relative to each other in the direction of the axis of rotation AA, or in addition to such a bearing is provided in a further embodiment of the treatment device according to the invention, the nozzle 4 and the nozzle outlet 41 pivotally relative to the workpiece 5 to to store a perpendicular to the axis of rotation AA extending axis BB.

FIG. 6 a shows an enlarged detail of a treatment device according to the invention which permits such a pivoting relative movement between nozzle 4 and workpiece 5. The nozzle tube 22 is articulated relative to the connecting tube 23 in this embodiment, wherein the hinge 24 allows pivoting of the nozzle tube 22 about an axis BB perpendicular to the axis of rotation AA. The pivot axis BB extends in this embodiment through the Joint 24. In FIG. 6, α 'denotes the angle through which the nozzle tube 22 is deflected in relation to a rest position in which the nozzle tube 22 extends substantially parallel to the axis of rotation AA. When the nozzle tube 22 is not deflected, a cleaning jet emerging from the nozzles 4 encloses an angle α = 90 ° with the axis of rotation AA. Upon deflection of the nozzle tube 22, this angle is reduced, wherein in the example, the angle α decreases with increasing deflection, where: α = 90 ° - α '.

The deflection of the nozzle tube 22, through which the individual nozzles 4 are pivoted about the axis B-B, leads on the one hand to the fact that the angle of incidence, under which a treatment jet emerging from a nozzle 4 meets a surface of the workpiece / workpiece basket 5, changes. In particular, when performing a cleaning process, this results in a positive cleaning effect, since, for example, impurities in recesses of workpieces can sometimes only be removed when the cleaning jet impinges on the workpiece at an angle not equal to 90 °. In addition, the pivoting movement of the nozzles 4 with respect to the workpiece / the workpiece carrier 5 causes a larger treatment area on the workpiece 5 to be achieved by means of a single nozzle 4, whereby nozzles 4 can be saved as compared to conventional treatment devices.

In FIG. 6, x0 designates a position of the x-axis for a nozzle 4 whose extension of the nozzle outlet 41 lies on the axis of rotation A-A or on an axis extending parallel to this axis. x0 + Δx denotes the position which is reached at maximum deflection of the nozzle tube 22.

During the rotating relative movement between the nozzle and the workpiece 5, the nozzle device 2 is preferably deflected periodically to the nozzle 4 periodically relative to the Pivot workpiece / workpiece basket 5. FIG. 7a shows, for such a treatment method, the position of the treatment beam with respect to the direction x of the axis of rotation AA as a function of the angle of rotation φ. This course basically corresponds to the course shown in FIG. 3a for an oscillating linear movement between the nozzle and the workpiece. In contrast to the linear relative movement, in the case of the swiveling movement explained with reference to FIG. 6, however, the angle of incidence under which the treatment beam impinges on the workpiece 5 also changes permanently. This is clear from the course of the angle α between the treatment jet and the axis of rotation AA shown in FIG. 7c. The deflection angle γ, which indicates the deflection of the treatment beam with respect to the axis of rotation, is preferably 0 in this method, as shown in FIG. 7b.

Figure 6b shows a modification of the device of Figure 6a, in which a portion 21A of the shaft 21 of the workpiece carrier is pivotally mounted together with the connecting tube 23 and the nozzle tube 22 by means of a hinge 24 at least about an axis BB which is perpendicular to the axis of rotation AA , Preferably, the hinge 24 is formed so that the shaft portion 21A is pivotally mounted with the connecting tube 23 and the nozzle tube 22 not only about an axis B-B but about any axis perpendicular to the axis of rotation. In this way, a tumbling motion of the shaft portion 21A, and thus of the nozzle tube 22 with respect to the workpiece 5 and the workpiece carrier 5 can be achieved. The joint 24 is for this purpose, for example, a ball joint with two dome-shaped, mutually movable joint shells.

Of course, the nozzle tube 22 can be stored according to Figure 6a by means of such a joint so that it is pivotally mounted about any axis extending perpendicular to the axis of rotation axes.

A rotating relative movement between the nozzle 4 and the workpiece 5 about an axis perpendicular to the axis of rotation A-A can also be achieved with reference to FIG. 8 in that the workpiece carrier 3 has a pivotable receiving device 33 for the workpiece or the workpiece basket 5. This receiving device 33 is seated in the example on a support 32, by which the receiving device 33 is pivotally mounted about an axis B-B perpendicular to the axis of rotation A-A.

If, in this treatment device, the workpiece carrier 3 is rotated by the shaft 31 about the axis of rotation A-A, then the pivoting movement is superimposed on the axis B-B extending perpendicular to the axis of rotation A-A with this rotational movement. The nozzle device 2 with the nozzles 4 can also rotate about the axis of rotation A-A or can remain rigid.

FIG. 9 shows an enlarged detail of the device shown in FIG. 8, from which it can be seen that a treatment jet emerging from a nozzle 4, when the workpiece 5 is in a first position, for example in a rest position, is at another point and below another angle to the point of the surface of the workpiece 5 impinges as in deflection of the workpiece 5 relative to the first layer by an angle α '.

In the embodiment shown in Figure 8, the workpiece 5 and the workpiece basket 5 is pivotally mounted about an axis BB which is perpendicular to the axis of rotation. In a manner not shown, the workpiece 5 or the workpiece basket 5 is pivotally mounted about a further axis which also extends perpendicular to the axis of rotation AA and which deviates from the axis BB, preferably perpendicular to this axis BB. In such storage, a wobbling movement of the workpiece 5 and des Workpiece basket 5 can be achieved relative to the nozzle device.

The storage of the workpiece 5 can also be carried out in a manner not shown so that the axis of rotation B-B (virtually) runs centrally through the workpiece 5 by the workpiece 5 is articulated, for example by a fork-like device within the workpiece carrier.

In a further embodiment of the treatment device according to the invention, the nozzle 4 itself is pivotally mounted relative to the nozzle tube 22 in order to be able to vary the angle of incidence of a treatment jet issuing from the nozzle 4 with respect to the axis of rotation.

An embodiment of such a pivotally mounted nozzle 4 is shown in cross section in Figure 11. The nozzle has a nozzle upper part 43 with a nozzle opening 40, wherein this nozzle upper part 43 is connected in the manner of a ball joint on a nozzle base 42 fixedly connected to the nozzle tube 22. The nozzle lower part 42 has a dome-shaped outer contour, while the nozzle upper part 43 has a matching dome-shaped inner contour 44. The nozzle top 43 is thereby pivotally mounted about a perpendicular to the axis of rotation A-A extending axis B-B.

In addition, in one embodiment of the treatment device according to the invention, in addition to or as an alternative to the previously described relative movements between the nozzle 4 and the workpiece 5, a relative movement between the nozzle 4 and the workpiece carrier 3 or workpiece 5 is possible such that the nozzle 4 is pivotable relative to the workpiece carrier 3 is mounted about an axis parallel to the axis of rotation AA extending axis.

Such a pivotable mounting is characterized by the processing device shown in fragmentary form in FIG achieved that the nozzle tube 22 is rotatably mounted with the nozzles 4 about its longitudinal axis CC, which runs parallel to the axis of rotation AA. The nozzle 4 can hereby be deflected so that a cleaning jet emerging from the nozzle 4 is no longer directed centrally on the axis of rotation AA, whereby the angle of incidence of the treatment beam on the workpiece 5 can also be varied in the direction of the relative rotational movement between the nozzle 4 and the workpiece carrier 3 ,

Such a variation of the angle of incidence on the workpiece 5 or a deflection of the treatment beam with respect to the axis of rotation A-A can also be achieved by using the nozzle 4 shown in FIGS. 10 and 11, which can be pivoted in arbitrary directions due to the ball joint.

The nozzle 4 is preferably deflected periodically relative to the axis of rotation A-A during the relative rotation of the nozzle 4 about the workpiece 5 in order to vary the angle of incidence γ of the treatment beam on the workpiece 5.

FIG. 13 shows schematically this angle of incidence γ during a periodic pivotal movement of the nozzle 4 according to FIG. 11 or 12 about the axis C-C running parallel to the axis of rotation A-A.

Instead of pivoting the nozzle 4 about an axis CC extending parallel to the axis of rotation AA, as was explained with reference to FIGS. 11 and 12, with reference to FIG. 14 in a further exemplary embodiment of the treatment device according to the invention, the possibility of a workpiece receiving device 33 of the workpiece carrier 3, which is held by a support 32 to pivot parallel to the axis of rotation AA extending axis CC.

In a further embodiment of the device according to the invention, provision is made for the nozzle 4 and the workpiece 5 or the workpiece basket 5 to be displaceable relative to each other in a direction perpendicular to the axis of rotation A-A, which will first be explained with reference to FIG. With y in FIG. 1b, a first direction is perpendicular to the axis of rotation A-A and z is a second direction perpendicular to the axis of rotation A-A, the two directions y, z being perpendicular to each other in the example.

Referring to Figure 16, the shaft 31 of the workpiece carrier 3 is preferably mounted so that the shaft 31 describes a circular path 100, wherein the circular path is known to be a superposition of movement in the y-direction and z-direction under certain constraints. The center of the circular path on which the shaft 31 extends may be the axis of rotation A-A about which the nozzle device 2 rotates. However, the circular path can also run eccentrically to this axis A-A.

The workpiece carrier is preferably rotatable or pivotally mounted about the shaft 31, wherein the axis of rotation of the workpiece carrier, which is denoted by the reference numeral D-D in Figure 16, and the axis of rotation A-A of the nozzle system are different.

In a pure circular motion of the shaft 31, the axis of rotation of the workpiece 5 or workpiece basket 5 runs parallel to the axis of rotation A-A. In addition, it is also possible, the workpiece 5 pivotally or staggering to store within the workpiece carrier 3.

FIGS. 17a and 17b illustrate a constructive solution that is comparatively easy to implement, by means of which a circular movement of a rotational axis DD of the workpiece 5 or of the workpiece basket 5 can be achieved. At one end face of the shaft 31 of the workpiece carrier 3 is in this case a circular disc 38 is arranged. Eccentrically to the shaft 31, a further shaft 37 is arranged on the disc 38, which serves for the rotatable mounting of a workpiece holder 33. This workpiece holder 33 is used in the manner already explained for receiving a workpiece 5 or a workpiece basket 5 and has, for example, a plurality of parallel spars 39, between which the workpiece 5 and the workpiece basket 5 can be accommodated. In this arrangement, the disk 38 is mounted rotatably about the shaft 31 about the axis of rotation AA, whereby the axis DD of the workpiece holder can describe a circular path about the axis AA. The workpiece 5 is mounted eccentrically to this axis of rotation AA about the axis DD pivotable or rotatable.

The treatment device according to the invention is preferably designed such that at least two of the above-described relative movements between nozzle 4 or nozzle outlet 41 and workpiece carrier 3 or workpiece 5, namely a linear relative movement in the direction of the axis of rotation, a relative pivotal movement about an axis perpendicular to the axis of rotation, a relative pivotal movement about an axis parallel to the axis of rotation, is possible. Advantageously, the pivoting movement about the axis parallel to the axis of rotation, which was explained with reference to FIGS 11 to 14 is combined with the linear relative movement or the pivoting movement about the axis perpendicular to the axis of rotation. FIG. 15 shows the position of a treatment jet issuing from a nozzle when these two relative movements are superimposed. Relative to the workpiece surface, this results in a spiral movement course of the treatment beam relative to the workpiece surface, resulting in a particularly treatment-active effect.

The device according to the invention makes possible a treatment method in which an angle at which a treatment medium impinges on the workpiece and / or a speed, with which the treatment beam is guided over the workpiece, permanently varied, whereby a particularly treatment-active effect is achieved. It is thus achieved a permanent vectorial change in the direction in which a treatment beam passes over the workpiece, and / or the angle at which the treatment beam impinges on the workpiece, whereby workpieces with complicated surface geometries can be effectively cleaned.

A-A

Rotationsachse

B-B

Achse senkrecht zur Rotationsachse

C-C

Achse parallel zur Rotationsachse

D-D

Achse parallel zur Rotationsachse (auf Kreisbahn bezogen)

1

Behandlungsbehälter

2

Düsenvorrichtung

3

Werkstückträger

4

Düse

5

Werkstücke, Werkstückkorb

11, 12

Aussparungen des Behandlungsbehälters

21

Welle der Düsenvorrichtung

21A

Wellenabschnitt

22

Düsenrohr

23

Verbindungsrohr

24

Gelenk

31

Welle des Werkstückträgers

32

Auflager

33

Werkstückaufnahmevorrichtung des Werkstückträgers

37

Welle (an Scheibe angeordnet)

38

Scheibe (kreisförmig)

39

Holme

40

Düsenöffnung

41

Düsenauslass

42

Düsenunterteil

43

Düsenoberteil

44

kalottenförmige Innenkontur

100

Kreisbahn

221, 222

Rohrabschnitte des Düsenrohres

223, 224, 225

Ansätze, Flansche

LIST OF REFERENCE NUMBERS

AA

axis of rotation

BB

Axis perpendicular to the axis of rotation

CC

Axle parallel to the axis of rotation

DD

Axle parallel to the axis of rotation (circular path)

1

treatment vessel

2

nozzle device

3

Workpiece carrier

4

jet

5

Workpieces, workpiece basket

11, 12

Recesses of the treatment tank

21

Shaft of the nozzle device

21A

shaft section

22

nozzle tube

23

connecting pipe

24

joint

31

Shaft of the workpiece carrier

32

In stock

33

Workpiece receiving device of the workpiece carrier

37

Wave (arranged on disc)

38

Disc (circular)

39

Holme

40

nozzle opening

41

nozzle outlet

42

Nozzle base

43

Nozzle shell

44

dome-shaped inner contour

100

orbit

221, 222

Pipe sections of the nozzle tube

223, 224, 225

Lugs, flanges

Claims (22)

Treatment device for the cleaning and / or drying treatment of workpieces, which has the following features: a treatment container (1), a workpiece carrier (3) arranged in the treatment container (1) with a receptacle for a workpiece or a workpiece basket (5), - A nozzle device (2) with at least one nozzle (4) having an on the workpiece carrier (3) directed outlet for a treatment medium, wherein the workpiece carrier (3) and the nozzle device (2) are mounted such that the at least one nozzle (4) and the workpiece carrier (3) are movable relative to one another in a direction of rotation about a rotation axis (AA), characterized in that
the workpiece carrier (3) and the at least one nozzle (4) are mounted such that a relative movement between the nozzle outlet and the workpiece carrier (3) is possible, which has at least one of the following movements as at least one movement component: a linear displacement in the direction (x) of the axis of rotation (AA), a linear displacement in a direction perpendicular to the axis of rotation (AA), a pivoting movement about an axis (BB) perpendicular to the axis of rotation (AA), - A pivoting movement about an axis (CC) parallel to the axis of rotation (AA). Treatment apparatus according to claim 1, wherein the nozzle device (2) comprises at least one nozzle tube (22) on which the at least one nozzle (4) is arranged, which is arranged substantially parallel to the axis of rotation (AA) and in the direction (x ) of the axis of rotation (AA) is slidably mounted. Treatment apparatus according to claim 1, in which the nozzle device (2) is displaceably mounted in the direction (x) of the axis of rotation (A-A). Treatment device according to one of claims 1 to 3, wherein the workpiece carrier (3) is displaceably mounted in the direction of the axis of rotation (A-A). Treatment apparatus according to claim 1, wherein the nozzle device (2) has at least one nozzle tube (22) on which the at least one nozzle (4) is arranged and which at least about the perpendicular to the axis of rotation (AA) extending axis (BB) pivotally mounted is. Treatment apparatus according to claim 5, in which the nozzle device (2) is mounted in a tumbling manner. Treatment apparatus according to claim 1, wherein the nozzle (4) is arranged such that the nozzle outlet (41) is pivotally mounted about at least one perpendicular to the axis of rotation (A-A) extending axis (B-B). A treatment device according to claim 1, 5, 6 or 7, wherein the workpiece carrier (3) is pivotable about at least one perpendicular to the axis of rotation (AA) extending axis (BB) is mounted or a workpiece receiving device (33) which is pivotally mounted about the axis perpendicular to the axis of rotation (AA) extending axis. Treatment apparatus according to claim 8, in which the workpiece carrier (3) or a workpiece receiving device (33) is mounted in a tumbling manner. Treatment apparatus according to claim 1, in which the nozzle device (2) has at least one nozzle tube (22) on which the at least one nozzle (4) is arranged and which is pivotably mounted about the axis (CC) running parallel to the axis of rotation (AA) , Treatment apparatus according to claim 1, wherein the nozzle (4) is arranged such that the nozzle outlet (41) is arranged pivotably about the axis (C-C) running parallel to the axis of rotation (A-A). Treatment apparatus according to claim 1, 10 or 11, wherein the workpiece carrier (3) is arranged eccentrically to the axis of rotation (A-A). Treatment apparatus according to claim 1, wherein a further axis of rotation (D-D) of the workpiece carrier (3) extends on a circular path (100). Treatment apparatus according to claim 1, 10 or 11, wherein the workpiece carrier (3) comprises a receiving device (33) which is pivotally mounted about the axis (C-C) parallel to the axis of rotation (A-A). Treatment device according to one of the preceding claims, wherein the workpiece carrier (3) and the at least one nozzle (4) are mounted such that at least two of the three relative movements between the nozzle outlet (41) and the workpiece carrier (3) are possible. A treatment device according to claim 15, wherein the two relative movements are the linear displacement in the direction (x) of the axis of rotation (A-A) and the pivotal movement about the axis (C-C) parallel to the axis of rotation (A-A). A treatment device according to claim 15, wherein the two relative movements are the pivotal movement about the axis (B-B) perpendicular to the axis of rotation (A-A) and the pivotal movement about the axis (C-C) parallel to the axis of rotation (A-A). Treatment device according to one of the preceding claims, wherein the nozzle device (2) comprises a plurality of nozzles (4) each having a nozzle outlet (41). Treatment device according to one of the preceding claims, in which the nozzle device (2) has two nozzle tubes (22) with nozzles (4). Process for the treatment of workpieces with a treatment medium, comprising the following process steps: Provision of a treatment device with a treatment container (1), a workpiece carrier (3) arranged in the treatment container (1) and a nozzle device (2) with at least one nozzle (4) which has a nozzle outlet (41) directed onto the workpiece carrier (3) for a treatment medium, Introducing the workpieces into the treatment container (1), - Moving the workpiece carrier (3) and / or the nozzle device (2) such that the at least one nozzle (4) and the workpiece carrier (3) relative to each other in a about an axis of rotation (AA) are moving in the direction of rotation, marked by
Moving the workpiece carrier (3) and / or the nozzle (4) such that a relative movement between the nozzle outlet (41) and the workpiece carrier (3) takes place with at least one of the following movements as at least one movement component: a linear movement in the direction (x) of the axis of rotation (AA), a linear movement in one direction (y, z) perpendicular to the axis of rotation, a pivoting movement about an axis (BB) perpendicular to the axis of rotation (AA), - A pivoting movement about an axis (CC) parallel to the axis of rotation (AA). Method according to Claim 20, in which the relative movements take place cyclically. Process for the treatment of workpieces with a treatment medium, comprising the following process steps: Provision of a treatment device with a treatment container (1), a workpiece carrier (3) arranged in the treatment container (1) and a nozzle device (2) with at least one nozzle (4) which has a nozzle outlet (41) directed onto the workpiece carrier (3) for a treatment medium, Introducing the workpieces into the treatment container (1), Moving the workpiece carrier (3) and / or the nozzle device (2) such that the at least one nozzle (4) and the workpiece carrier (3) are moved relative to one another in a direction of rotation about a rotation axis (AA), marked by
several times varying the relative rotational speed during a rotational movement about the axis of rotation (AA) in one direction.

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