EP1997568A1 - Treatment device for cleaning and/or drying workpieces - Google Patents

Abstract

The treatment device (10) has a workpiece carrier (14) for retaining workpiece (12), which has a workpiece axis (16).A nozzle device (18) has a nozzle (20) for the spraying of a treatment medium. The nozzle device is supported movable by lever arm (24), which is supported movable around a parallel offset axis of rotation (26) to the workpiece axis.

Description

The invention relates to a treatment device for cleaning and / or drying workpieces, having a workpiece carrier for receiving at least one workpiece having a workpiece axis, a nozzle device having at least one nozzle for spraying a treatment medium and which is mounted movably relative to the workpiece carrier, to direct the treatment medium in a spray direction on the workpiece.

Furthermore, the invention relates to a method for cleaning and / or drying of workpieces.

Such a treatment device and a method for cleaning and / or drying of workpieces is out US 5,167,720 known.

Such treatment devices serve to liberate workpieces with a treatment medium, preferably a liquid cleaning agent or a gas or gas mixture of adhering substances of any kind.

Usually, the workpieces to be cleaned are mounted on a workpiece carrier and sprayed with a separated by one or more nozzles treatment medium. The workpiece carriers and the nozzles are usually mounted relative to each other movable. The relative movement may be a rotating relative movement or a rectilinear relative movement or a combination of these movements. The relative movement serves to directly spray many areas of the workpiece with the treatment medium in order to achieve a particularly good cleaning result.

At the US 5,167,720 known device and the method for treating machine parts, a workpiece on a rotatable and tiltable workpiece carrier is arranged, which is sprayed from a nozzle which is slidably mounted in three spatial directions and tilted about an axis. Due to this large number of degrees of freedom of the workpiece carrier and the nozzle, almost all sections of the workpiece to be cleaned can be sprayed directly by the treatment medium in this device. This also makes it possible to realize all possible distances and angles of the nozzle relative to the workpiece to be cleaned.

A disadvantage of this device is that the large number of degrees of freedom requires a complex control electronics and individual control programs to optimally treat different workpieces. Furthermore, it is disadvantageous that the single nozzle can spray only small sections per unit time and thus can only achieve a low throughput. For mass production of large workpieces or bulk material, this device is rather disadvantageous.

Out EP 1 640 077 A2 For example, a treatment apparatus and method for cleaning or drying workpieces is known in which a series of nozzles rotate around the workpiece to be treated. The nozzles and the workpiece are moved relative to each other about a common axis of rotation. In this coaxial relative movement, the workpiece and the nozzles are relatively linear in a linear movement in the direction of the axis of rotation, in a linear movement in a direction perpendicular to the axis of rotation, about an axis perpendicular to the axis of rotation and in a pivotal movement parallel to the axis of rotation move each other.

A disadvantage of this device is that the nozzles are always guided around the workpieces to be treated in a circular path. As a result, the distance between the nozzles and the workpiece in the treatment varies, since the workpieces usually have no round base. Since the distance of the workpiece to be treated from the nozzles has a significant influence on the efficiency of the treatment, some portions of the workpiece are treated less intensively than others, which results in inhomogeneous cleaning of the workpieces.

Characterized in that the workpiece is not always moved at an optimal distance from the nozzles, certain portions of the workpiece can be covered or shaded by protruding workpiece parts or holders of the workpiece carrier, so that at these points, the cleaning is not performed optimally.

It is therefore the object of the present invention to provide a simple treatment device for cleaning or drying of workpieces in which shadowing effects are reduced.

Further, it is the object of the present invention to provide a rapid cleaning method in which a shadow effect is reduced.

This object is achieved in the treatment device mentioned above in that the nozzle device is movably mounted by means of at least one lever arm which is rotatably mounted about an axis of rotation parallel to the workpiece axis.

Furthermore, the above object is achieved by a method for cleaning or drying workpieces, wherein a workpiece is arranged on a workpiece carrier, a nozzle device by means of at least one lever arm, which is rotatably mounted about a parallel to the workpiece axis axis of rotation, relative to the workpiece moves is sprayed and a treatment medium in a spray device on the workpiece.

The invention has the advantage that the nozzle device can be guided at an arbitrary distance relative to a workpiece surface of the workpiece and thus an optimum cleaning effect without shadowing is achieved.

The workpiece carrier can be designed for receiving a workpiece or some workpieces, as well as for receiving bulk material. All of the following references to a workpiece or a workpiece carrier refer to all of these alternatives.

The object of the invention is thus completely solved.

It is preferred if the workpiece carrier is rotatably mounted about the workpiece axis.

This allows the workpiece to be sprayed from all sides with the treatment medium.

In a preferred embodiment of the invention, the nozzle device is rotatably mounted relative to the lever arm.

Thereby, the spray direction can be directed to the workpiece surface at an optimum angle.

Furthermore, it is preferred if the nozzle device is mounted rotatably relative to the lever arm about a longitudinal axis arranged parallel to the axis of rotation.

Thereby, the spray direction can be changed relative to the workpiece or the workpiece carrier, without simultaneously changing the distance to the workpiece, or be kept constant while the lever arm is pivoted.

In a preferred embodiment, the nozzle device has a plurality of nozzles which are distributed over the length of the nozzle device.

As a result, larger workpieces can be treated in a very short time with the treatment medium, since the treatment medium can be sprayed on several sections of the workpiece simultaneously.

In a further preferred embodiment, the nozzles on the nozzle device form at least one rectilinear row running parallel to the longitudinal axis.

Consequently, by rotating the nozzle device, the spray direction of all the nozzles can be uniformly changed because the spraying directions of the respective nozzles are the same.

It is particularly preferable to move the nozzle device relative to the workpiece rotating with the workpiece carrier so that the spray direction forms a constant angle with a surface of the workpiece facing the nozzle device.

As a result, the treatment medium is always sprayed onto the surface of the workpiece at an optimum angle, regardless of the surface structure of the workpiece.

In an alternative embodiment of the invention, the treatment device is designed such that the nozzle device is moved relative to the rotating workpiece carrier in such a way that the spray direction forms a constant angle with a side of the workpiece carrier facing the nozzle device.

As a result, shading effects of the workpiece carrier can be excluded because the treatment medium is always sprayed at an optimum angle to the surface of the workpiece.

In a preferred embodiment, the treatment device is adapted to move the nozzle device relative to the lever arm so that the spray direction is constant relative to the axis of rotation of the lever arm or independent of the rotation angle of the lever arm.

A particular advantage of this is that this does not change the direction of movement when the lever arm moves.

In a particular embodiment, the treatment device is adapted to move the nozzle device relative to the rotating workpiece carrier so that the nozzles are arranged at a constant distance relative to the workpiece carrier.

As a result, the movement of the lever arm can be realized simply and universally, since the dimensions of the workpiece carrier are usually identical for different workpieces.

In a further preferred embodiment, the treatment device is designed to move the nozzle device relative to the workpiece rotating with the workpiece carrier so that the nozzles are arranged at a constant distance relative to the workpiece.

As a result, the treatment medium is always sprayed at an optimum distance on the surface of the workpiece, whereby an optimal treatment of the workpiece is achieved.

In a particular embodiment, the nozzle device is designed to be variable in length.

As a result, the treatment device can treat workpieces of different lengths.

In a particular embodiment, the nozzle device comprises a tube.

As a result, the nozzle device can be realized in a particularly simple and cost-effective manner.

In a particular embodiment of the treatment device, the nozzle device or the lever arm is guided on a polygonal guide section.

As a result, the distance of the nozzle device relative to the rotating workpiece carrier or the workpiece can be defined in a simple manner.

In a further embodiment of the treatment device, the nozzle device has a guide element, by means of which the nozzle device or the lever arm is guided on the polygonal guide section.

As a result, the nozzle device or the lever arm can be guided along the guide section with little design effort.

In a further embodiment, the lever arm is resiliently biased, so that the nozzle device rests against the guide section.

This ensures that the nozzle device always rests with little design effort on the guide section and does not require its own drive.

In a further embodiment, the guide section is formed by a workpiece carrier receptacle, which is rotatably driven drivable in a housing of the treatment device.

As a result, it is possible to guide the nozzle device on a guide section, even if the workpieces are treated without a basket carrier in the treatment apparatus.

In a further embodiment of the treatment device, a plurality of nozzle devices are provided, each with at least one lever arm for spraying the cleaning medium.

As a result, the cleaning speed can be increased and thus the cleaning time can be reduced.

In a preferred embodiment of the invention, the lever arm is mounted separately rotatably on a washing chamber wall.

Thereby, a particularly simple construction of the bearing of the lever arm is possible without having to provide a rotary feedthrough for the cleaning medium in the region of the axis of rotation for the workpiece carrier.

In a preferred embodiment of the method, the workpiece carrier is rotated about the workpiece axis.

As a result, the workpiece can be sprayed from different sides with the treatment medium.

In a particular embodiment of the method, the nozzle device is moved relative to the workpiece carrier such that the nozzle device is kept at a constant distance relative to the surface of the rotating workpiece.

As a result, the treatment medium is always sprayed at an optimum distance on the surface of the rotating workpiece, whereby an optimal treatment is achieved.

In a further particular embodiment of the method, the nozzle device is moved relative to the workpiece carrier such that the nozzle device is kept at a constant distance relative to the surface of the rotating workpiece carrier.

As a result, the treatment medium is always sprayed at an optimum distance on the surface of the rotating workpiece carrier, whereby an optimal treatment is achieved. In a particular embodiment of the method, the nozzle device is moved relative to the workpiece carrier such that the spray direction is aligned at a constant angle to one side of the workpiece carrier.

As a result, the relative movement of the nozzle device to the lever arm can be realized particularly easily.

In an alternative embodiment of the method, the nozzle device is moved relative to the workpiece such that the spray direction is aligned at a constant angle to a surface of the rotating workpiece.

It is advantageous in this case that shadowing effects are caused by e.g. Projections of the workpiece can be reduced.

In a particular embodiment of the method, the spray direction is kept constant relative to a bearing point of the lever arm upon movement of the lever arm relative to the workpiece (i.e., independent of the pivoting angle).

As a result, the spray direction can advantageously be kept constant during movements of the lever arm, whereby the spray direction is always directed to the workpiece, regardless of the movement of the lever arm.

In a particular embodiment of the method, the length of the nozzle device is varied.

This makes it possible to treat different lengths of workpieces. Particular sections of the workpiece may preferably be treated particularly intensively, since with a reduction in the length of the nozzle device, the cleaning effect is enhanced if the density of the nozzles increases in this case.

In a particular embodiment of the method, the nozzle device is guided on a polygonal guide section.

As a result, the nozzle device can be moved in a simple manner relative to the rotating workpiece or the workpiece carrier.

In a further embodiment of the invention, the nozzle device is guided by means of a guide element on the polygonal guide section.

As a result, the nozzle device can be guided on the guide section with little design effort.

In a particular embodiment of the method, the nozzle device is guided by the guide element at a constant distance from the workpiece carrier and / or the workpiece.

This makes it possible to realize the constant distance of the nozzle device relative to the rotating workpiece carrier or the workpiece with little design effort. It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Figur 1

eine schematische Darstellung der erfindungsgemäßen Behandlungsvorrichtung mit Hebelarm;

Figur 2

eine schematische Darstellung zur Erläuterung der Funktionsweise der Behandlungsvorrichtung;

Figur 3

eine schematische Darstellung einer bevorzugten Ausführungsform der Behandlungsvorrichtung mit konstantem Abstand zwischen Düsenvorrichtung und Werkstückträger;

Figur 4

eine schematische Darstellung zur Erläuterung einer besonderen Ausführungsform der Behandlungsvorrichtung, bei der die Sprührichtung in konstantem Winkel zu einer Seite des Werkstücks geführt ist;

Figur 5

eine schematische Darstellung der erfindungsgemäßen Behandlungsvorrichtung mit Düsenvorrichtung und Hebelarm in Draufsicht;

Figur 6

eine besondere Ausführungsform der Behandlungsvorrichtung mit Führungselement;

Figur 7

eine schematische Darstellung der Ausführungsform aus Fig. 6 in Draufsicht; und

Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. Show it:

FIG. 1

a schematic representation of the treatment device according to the invention with lever arm;

FIG. 2

a schematic representation for explaining the operation of the treatment device;

FIG. 3

a schematic representation of a preferred embodiment of the treatment device with a constant distance between the nozzle device and the workpiece carrier;

FIG. 4

a schematic illustration for explaining a particular embodiment of the treatment apparatus, wherein the spray direction is guided at a constant angle to one side of the workpiece;

FIG. 5

a schematic representation of the treatment device according to the invention with nozzle device and lever arm in plan view;

FIG. 6

a particular embodiment of the treatment device with guide element;

FIG. 7

a schematic representation of the embodiment of Fig. 6 in plan view; and

FIG. 8 another embodiment of the invention with four nozzle devices. In FIG. 1 the treatment device according to the invention is generally designated 10.

The treatment apparatus 10 is used to clean and / or dry a workpiece 12. The workpiece is received by a workpiece carrier 14. The workpiece carrier 14 has a workpiece axis 16. The workpiece carrier 14 may be fixed or, according to a preferred embodiment, rotatably mounted about the workpiece axis 14, as indicated by arrows 17.

The treatment device 10 has a nozzle device 18 which has at least one nozzle 20 for spraying a treatment medium. The nozzle device 18 is movably supported relative to the workpiece carrier 14 to direct the variable spacing treatment medium to the workpiece 12 in a spray direction 22. The nozzle device 18 is movably mounted by means of a lever arm 24 which is rotatably mounted about a rotation axis 26. The axis of rotation 26 is arranged offset parallel to the workpiece axis 16.

For cleaning and / or drying of the workpiece 12, the treatment medium is sprayed onto the workpiece 12 by means of the nozzle 20 or a plurality of nozzles 20. In this case, the spray direction 22 is directed to the workpiece 12. According to a preferred embodiment of the present invention is in the treatment of the workpiece 12 of the workpiece carrier 14 and thus also the workpiece 12 received therein are rotated about the workpiece axis 16, so that the workpiece 12 is sprayed through the nozzles 20 at different sections with the treatment medium. In a further embodiment or a special operating mode, the workpiece carrier 14 is rotated back and forth in a certain angular range about the workpiece axis 16, so that the workpiece 12 is sprayed in a certain area.

Typically, the workpiece 12 to be cleaned has a polygonal base surface relative to the workpiece axis 16, such that upon rotation of the workpiece carrier 14, the workpiece 12 is spaced from the nozzles 20 in a varying manner. To compensate for this distance variation in the cleaning and / or drying process, the nozzle device 18 is rotatably supported by the lever arm 24 about the axis of rotation 26. Thereby, a movement of the nozzle device 18 relative to the workpiece 12 is possible. Preferably, the relative movement of the nozzle device 18 is carried out so that the nozzles 20 are always arranged independently of a rotational position of the workpiece carrier 14 in an optimal, approximately constant distance to the surface of the workpiece 12 or the workpiece carrier 14.

FIG. 2 shows a schematic representation for explaining the operation of the treatment device 10. It is in FIG. 2 schematically illustrated two operating positions, wherein a first operating position is shown by solid lines and a second operating position with dashed lines. The two operating positions differ in that in the first operating position, the workpiece 12 is rotated by 90 degrees about the workpiece axis 16 relative to the second operating position of the workpiece 12 '. The workpiece 12, 12 'has a polygonal shape. In the first operating position, the workpiece 12 in the spray direction 22 has a small distance between the axis of rotation 16 and outer surface (hereinafter referred to as diameter for simplicity). In the second operating position, the workpiece 12 'in the spray direction 22' has a large diameter.

The nozzle device 18, 18 'is arranged by a rotation of the lever arm 24, 24' about the axis of rotation 26 in the first operating position at a smaller distance from the workpiece axis 16, as in the second operating position. In this embodiment, the nozzle device 18, 18 'additionally has a longitudinal axis 28, 28' about which the nozzle device 18, 18 'is rotatably mounted relative to the lever arm 24, 24'. The nozzle device 18, 18 'is in the first operating position relative to the second operating position about the longitudinal axis 28, 28' by an angular amount | α'-α | arranged twisted so that the spray direction 22, 22 'is identical in both operating positions, although the lever arm 24, 24' is positioned rotated in these two operating positions about the rotation axis 26.

By the rotation of the lever arm 24, 24 'about the axis of rotation 26, the nozzle device 18, 18' relative to the workpiece axis 16 off or swung, so that the distance of the nozzle device 18, 18 'to the workpiece axis 16 can be varied. As a result, the nozzle device 18, 18 'can always be arranged at a constant distance from the surface of the workpiece, even in the case of polygonal rotating workpieces 12, 12'. Characterized in that the spray device 18, 18 'relative to the lever arm 24, 24' rotatably mounted about the longitudinal axis 28, 28 ', a constant spray direction 22, 22' in different pivot positions of the lever arm 24, 24 'realize.

By means of this arrangement, in this embodiment of the invention, the treatment medium can be sprayed onto the rotating workpiece 12, 12 'at a constant distance and constant spray direction 22, 22', thus realizing optimum treatment.

In FIG. 3 a further embodiment of a treatment device 10 according to the invention is shown schematically. To the workpiece carrier 14, a path 29 is indicated by a dashed line, which marks a constant distance 30 to the workpiece carrier. The nozzle device 18 is located on the path 29, so the nozzle device 18 is arranged at the distance 30 from the workpiece carrier 14.

According to the invention, upon rotation of the workpiece carrier 14 about the workpiece axis 16, the nozzle device 18 is deflected about the axis of rotation 26 via the lever arm 24 such that the nozzle device 18 always follows the path 29. This means that the nozzle device 18 is always arranged at the constant distance 30 to the workpiece carrier 14, regardless of the rotational position of the workpiece carrier 14. As a result, the treatment medium can be sprayed onto the workpiece at an optimum spraying distance. The nozzle device 18 is preferably rotated relative to the lever arm 24 about the longitudinal axis 28 that the spray direction 22 remains constant.

This in FIG. 2 and FIG. 3 described rotation of the nozzle device 18 about the longitudinal axis 28 can be carried out via a mechanism or via an electronic control. The constant distance 30 of the nozzle device 18 relative to the workpiece carrier 14 or the workpiece 12 can be ensured by distance sensors, such as ultrasound or laser-based systems. It is also conceivable for the contour of the workpiece carrier 14 or the workpiece 12 to be made accessible to an electronic controller which controls the extension and retraction of the lever arm 24 and thus the constant distance 30 is realized.

In a particular embodiment, the nozzle device 18 can be rotated back and forth about the longitudinal axis 28 in a certain angular range such that the spray direction 22 is changed regularly and the treatment medium impinges on the workpiece 12 or the workpiece carrier 14 at varying angles.

In FIG. 4 an embodiment of the treatment device 10 according to the invention is illustrated for explaining the operation, in which the spray direction 20 is aligned relative to a surface of the workpiece 12 constant.

In FIG. 4 two operating positions of the treatment device 10 according to the invention are shown. A first operating position of the workpiece 12 is indicated by solid lines and a second operating position of the workpiece 12 'is shown by dashed lines. The two operating positions differ in that the workpiece 12, 12 'is rotated about the workpiece axis 16 by approximately 30 degrees. The nozzle device 18, 18 'is shown in two positions rotated about the longitudinal axis 28. This can be seen, characterized in that the spray direction 22, 22 'is aligned differently for these two operating positions. The nozzle device 18, 18 'is aligned in these two operating positions relative to the workpiece 12, 12' such that the spray direction 22, 22 'with the surface of the workpiece 12, 12' in the two operating positions in each case an identical angle 32, 32 ' of 90 degrees.

If the workpiece carrier 12, 12 'has a polygonal shape, the nozzle device is rotated about the longitudinal axis 28 such that the spray direction 22, 22' always has a constant angle 32, 32 'with the surface of the rotating workpiece 12, 12'. As a result, the treatment medium generally strikes the surface at an optimum angle 32, 32 ', so that an optimal treatment can be carried out.

In the schematic representation of FIG. 4 is this angle 32, 32 '90 degrees, wherein the optimum angle between the spray direction 22, 22' and the surface of the workpiece 12, 12 'can also be another angle, for example, an acute angle.

It is also conceivable that the angle 32, 32 'is varied continuously in order to spray the surface from different directions.

The alignment of the nozzle device 18, 18 'or the spraying direction 22, 22' can take place via a mechanism or an electronic control or a combination of these two. In this case, the orientation of the nozzle device 18, 18 'facing side can be detected or determined by sensors or as stored data, so that the spray direction is permanently aligned so that the angle 32, 32 'remains constant.

In order to optimize the control effort, certain tolerances can be allowed in the alignment, so that the angle 32, 32 'with a freely selectable deviation of e.g. 10 to 45 degrees can be regulated.

It is understood that in FIG. 4 illustrated embodiment also with a movable lever FIG. 2 or 3 can be trained. As a result, the treatment agent can be sprayed onto the surface of the workpiece 12, 12 'both at the optimum distance 30 and at the optimum angle 32, 32'.

In FIG. 5 a treatment device 10 according to the invention is shown schematically in plan view. The workpiece axis 16 is arranged parallel to the axis of rotation 26 and parallel to the longitudinal axis 28. The nozzle device 18 is formed of an elongated member on which the plurality of nozzles 20 are distributed over a length of the nozzle device 18. The nozzles 20 form a straight line. The nozzle device 18 has a proximal end 33 and a distal end 34. At the proximal end 33, the nozzle device 18 is connected to the lever arm 24 (fixed or rotatably mounted) and supported rotatably about the axis of rotation 26 via this. The distal end 34 is formed as a free end in this embodiment.

Because the nozzles 20 are distributed over the length of the nozzle device 18, a larger longitudinal section of the workpiece carrier 14 can be treated at the same time, whereby a treatment time can be significantly reduced.

In this embodiment, the nozzle device 18 is formed as a tube through which the treatment medium is supplied to the nozzles 20 arranged in a tube wall. However, it is also conceivable that the nozzle device 18 is designed as a bar or a linkage on which the nozzles 20 are arranged and the treatment medium is supplied to the nozzles 20 through eg tubes. It is also conceivable that the length of the nozzle device 18 can be varied, wherein for this function, the tube 18 must be telescopically extendable, or the linkage must be formed with a corresponding mechanism.

In a variant of in FIG. 5 1, a second lever arm 24 may be arranged on the distal end 34 of the nozzle device 18 opposite the lever arm 24. As a result, the stability of the nozzle device would be increased.

Furthermore, the nozzles 20 may be arranged on the nozzle device 18 in individual axial sections in a smaller or at a greater distance from each other. As a result, special sections of the workpiece 12 can be individually intensively treated or less intensively treated.

Preferably, the lever arm 24 is designed so that it has a length which is less than a distance between the axis of rotation 26 and the workpiece axis 16. Thus, a distance of the nozzle device 18 to the workpiece axis 16 can be varied particularly favorable by a pivoting movement of the lever arm 24 ,

The treatment device 10 and the rotating workpiece 12 or the rotating workpiece carrier 14 are usually arranged in a washing chamber. This wash chamber may be filled with a liquid or gaseous medium during the treatment. If the washing chamber is filled with the liquid medium, special nozzles 20, so-called flood nozzles, which are optimized for this special application, are preferably used for spraying the treatment medium onto the workpiece 12.

Furthermore, it is conceivable that the nozzle device is rotated back and forth in a certain angular range about the longitudinal axis 28, wherein the workpiece 12, 12 ' or the workpiece carrier 14, 14 'is not rotated or only to a certain angle of rotation around the workpiece axis 16 back and forth rotated. Thus, even sensitive parts that must not be rotated or swiveled, treated with the treatment medium.

In FIG. 6 a particular embodiment of the treatment device 10 is shown schematically. The workpiece 12 is received in the workpiece carrier 14, which may also be designed as a workpiece basket. The workpiece carrier 14 is received in a basket carrier 36, which is rotatably driven in a housing or the washing chamber is mounted. The basket carrier 36 has a guide portion 38 which extends around the basket carrier 36 around. The nozzle device 28 has a guide element 40 which is arranged on the guide section 38.

The lever arm 24 is mounted so that the nozzle device 28 or the lever arm 24 by means of elastic means (eg., A spring) is pressed with the guide member 40 against the guide portion 38. The guide portion 38 and the guide member 40 are formed such that the guide member 40 slides on a rotation of the basket support 36 about the workpiece axis 16 on the guide portion 38 or rolls by means provided on the lever arm 24 and the nozzle device 18 of the workpiece carrier 14 is always constant is spaced. This ensures that the nozzle device 18 is always arranged in the defined distance 30 to the workpiece carrier 14 during the rotation of the basket carrier 36 about the workpiece axis 16.

In this embodiment, the guide member 40 is designed as an annular element that can slide or roll on the guide portion 38. However, other shapes of the guide element 40 are also conceivable. It is, for example, elliptical or polygonal trained guide elements 40 conceivable that vary the distance 30 by their shape.

The guide member 40 may be formed interchangeable, so that different shapes and sizes of the guide member 40 may be used. The larger the guide element 40 is formed, the greater the distance 30 of the nozzle device 18 to the basket carrier 36 or the workpiece carrier 14 or the workpiece 12 is realized.

In this embodiment, the nozzle device 18 may be rotatably mounted about the longitudinal axis 28 or rigidly connected to the lever arm 24.

FIG. 7 shows the embodiment of the treatment device 10 from FIG. 6 in plan view. The workpiece carrier 14 is received in the basket carrier 36. The basket carrier 36 has the guide portion 38 at one end. The nozzle device 18 has, at its proximal end 33, the guide element 40, which is arranged on the guide section 38 of the basket carrier 36.

FIG. 7 further shows a to the workpiece axis 16 coaxially extending workpiece shaft 42, by means of which the workpiece 12 and the basket carrier 36 is rotatably mounted. The workpiece shaft 42 is guided by means of a passage 44 through a washing chamber wall 46 to the outside. The lever arm 24 is rotatably supported by means of a Hebelarmrohrs 47 in a further passage 48 in the washing chamber wall 46 separately. The Hebelarmrohr 47 is disposed coaxially with the axis of rotation 26. The supply of the nozzle device 18 with the cleaning medium takes place in this embodiment by the Hebelarmlagerungsrohr 47 therethrough.

Characterized in that the guide member 40 is arranged on the guide portion 38 and the lever arm 24 is mounted so that the guide member 40 is pressed against the guide portion 38, the nozzle device 18 at a rotation of the basket support 36 about the workpiece axis 16 always at a constant distance 30 guided to the workpiece carrier 14 and to the workpiece 12.

Characterized in that the workpiece shaft 42 and the lever arm are guided by means of separate passages 44, 48 through the washing chamber wall 46, a seal of the workpiece shaft 42 in the passage 44 and the storage and sealing of the Hebelarmrohrs 47 in the bushing 48 and the supply of the nozzle device 18th particularly easy to implement with cleaning medium.

In FIG. 8 an embodiment of the treatment device 10 is shown with four separate nozzle devices 18, which are each mounted by means of a lever arm 24 about four separate axes of rotation 26. Identical elements are in FIG. 8 denoted by identical reference numerals. The nozzle devices 18 each have a guide element 40, with which they are guided on the guide portion 38 of the basket carrier 36 and thus always have the constant distance 30 to the basket carrier 36.

The fact that several nozzle devices 18 are arranged on the basket carrier 36, the cleaning efficiency is significantly increased, since the workpiece to be treated can be sprayed from four different sides simultaneously.

In the in FIG. 8 In the illustrated embodiment, the lever arms 24 are arranged relative to the basket carrier 36 so that pivoting of the lever arms 24 causes rotation of the lever arms 24 about the axis of rotation 26 in the clockwise direction. It is also conceivable that at least one of the lever arms 24 is arranged such that a deflection of the nozzle device 18 causes a rotation of the lever arm 24 about the axis of rotation 26 in the counterclockwise direction. If the nozzle device 18 is designed to be stationary relative to the lever arm 24, causes such a different storage of the lever arms 24 that the spray direction 22 of the differently supported nozzle devices 18 is deflected in different directions, whereby an improved cleaning effect can be achieved.

In the in FIG. 8 illustrated embodiment, the lever arms 24 are mounted separately about the axes of rotation 26 and with separate passages 48 through the Washing chamber wall 46 which is arranged orthogonal to the workpiece axis 16 and the axes of rotation 26, led to the outside. This greatly simplifies the construction and sealing of the passages 48 for the lever arm tubes 47 and the passage 44 for the workpiece shaft 42. By this embodiment, the nozzle devices 18 can be subjected to different pressures. Furthermore, it is possible through this separate implementation 48 to supply the different nozzle devices 18 with different cleaning media at the same time.

Furthermore, it is conceivable that the guide portion 38 has a shape that differs from the in FIG. 6 different form shown. It is conceivable that a polygonal shape is selected, which varies the distance of the nozzle 20 from the workpiece 12 and the workpiece carrier 14.

Also it is in the embodiment of FIG. 8 possible to use different guide elements to achieve an improved cleaning effect.

Furthermore, it is conceivable that the shape of the guide section 38 is adapted to the shape of the workpiece 12. In this case, the workpiece 12 may be arranged in the basket carrier 36 or workpiece carrier 14 or be treated without basket carrier 36.

Claims (15)

Treatment device (10) for cleaning and / or drying of workpieces (12), with a workpiece carrier (14) for receiving at least one workpiece (12) having a workpiece axis (16), - A nozzle device (18) having at least one nozzle (20) for spraying a treatment medium and which is movably mounted relative to the workpiece carrier (14) in order to direct the treatment medium in a spray direction (22) on the workpiece (12), characterized in that
the nozzle device (18) is movably mounted by means of at least one lever arm (24) which is rotatably mounted about an axis of rotation (26) offset parallel to the workpiece axis (16). Treatment device according to claim 1, characterized in that the lever arm (24) has a length which is less than a distance between the axis of rotation (26) and the workpiece axis (16). Treatment device according to one of claims 1 or 2, characterized in that the nozzle device (18) is rotatably mounted relative to the lever arm (24). Treatment device according to one of claims 1 to 3, characterized in that the treatment device (10) is adapted to the nozzle device (18) relative to that with the workpiece carrier (14) rotating Workpiece (12) to move so that the spray direction (22) with a nozzle device (18) facing surface of the workpiece (12) or the workpiece carrier (14) forms a constant angle (32). Treatment device according to one of claims 1 to 4, characterized in that the treatment device (10) is adapted to the nozzle device (18) relative to the rotating workpiece carrier (14) to move so that the nozzles (20) relative to the workpiece carrier (14) are arranged at a constant distance (30). Treatment device according to one of claims 1 to 5, characterized in that the treatment device (10) is adapted to the nozzle device (18) relative to the workpiece carrier (14) rotating workpiece (12) to move so that the nozzles ( 20) are arranged relative to the workpiece (12) at a constant distance (30). Treatment device according to one of claims 1 to 6, characterized in that the nozzle device (18) is guided on a polygonal guide section (38). Treatment device according to claim 7, characterized in that the lever arm (24) is resiliently biased, so that the nozzle device (18) rests against the guide portion. Treatment device according to claim 7 or 8, characterized in that the guide portion is formed by a workpiece carrier receptacle, which is rotatably driven drivable in a housing. Method for cleaning and / or drying workpieces (12), wherein a workpiece (12) is arranged on a workpiece carrier (14), - A nozzle device (18) by means of at least one lever arm (24) which is rotatably mounted about a parallel to the workpiece axis (16) offset axis of rotation (26), relative to the workpiece (12) is moved, and - A treatment medium in a spray direction (22) is sprayed onto the workpiece (12). A method according to claim 10, characterized in that the nozzle device (18) is moved relative to the workpiece carrier (14) such that the nozzle device (18) is held at a constant distance (30) relative to the rotating workpiece (12). A method according to claim 10 or 11, characterized in that the nozzle device (18) is moved relative to the workpiece carrier (14) such that the nozzle device (18) is held at a constant distance (30) relative to the rotating workpiece carrier (14). Method according to one of claims 10 to 12, characterized in that the spray direction (22) relative to a bearing point of the lever arm (24) during a movement of the lever arm (24) relative to the workpiece (12) is kept constant. Method according to one of claims 10 to 13, characterized in that the nozzle device (18) is guided on a polygonal guide section (38). A method according to claim 14, characterized in that the nozzle device (18) by means of the guide element (40) in the constant distance (30) to the workpiece carrier (14) and / or the workpiece (12) is guided.

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