The disclosure relates to a painting installation for coating or painting an elongated workpiece.
To coat or paint an elongated workpiece, for example, a rotor blade of a wind turbine, a painting cubicle can be used, into which the elongated workpiece can be introduced. In such a case the painting cubicle is at the same time a flash-off zone and a dryer. In view of the circulating air and the heat energy, the energy efficiency of such a painting installation can be unfavorable. Furthermore, the cycle time can be relatively high and the output rate can be accordingly relatively low.
An arrangement for coating workpieces is known from DE 10 2008 011 998 A1, wherein at least one painting robot arranged on a running rail is movable along a running direction. The running rail is in turn movable relative to a stationary reference point parallel to a working surface. A painting device including two mutually opposed portal-like openings is provided, between which a working region is provided, wherein the painting cubicle is supported on at least two running gears arranged parallel to one another and is movable jointly therewith. The known arrangement can be suitable for coating a workpiece that is longer than the working region defined by the painting cubicle. The workpiece is coated sequentially, wherein the workpiece is subdivided into a plurality of axially adjacent portions and, to coat a respective portion, the painting cubicle is moved into a position in which the portion of the workpiece provided for coating is arranged in the working region and is thus surrounded by the painting cubicle and can be coated by means of the painting device.
A painting installation is disclosed for coating a workpiece which is subdivided into a plurality of segments of a predetermined length L, comprising: a painting installation having three zones which are arranged next to one another and are demarcated from one another, the three zones including a painting cubicle which has at least one painting robot, an adjoining flash-off zone, and an adjoining dryer, wherein the painting cubicle, the flash-off zone and the dryer each is at least the predetermined length L; and at least one holder for transporting a workpiece along a running rail in which individual segments pass successively step-by-step through the three zones.
A method of coating an elongated workpiece is disclosed which is subdivided into a plurality of segments of a predetermined length, comprising: introducing a first segment of an elongated workpiece having a plurality of segments into a painting cubicle of a painting installation, the painting installation having three zones which are arranged next to one another and are demarcated from one another, the three zones including the painting cubicle, an adjoining flash-off zone, and an adjoining dryer, wherein the painting cubicle, the adjoining flash-off zone, and the adjoining dryer each is at least the predetermined length L; coating the first segment of the elongated workpiece in the painting cubicle; simultaneously introducing the coated first segment of the elongated workpiece into the adjoining flash-off zone, and a second segment of the elongated workpiece into the painting cubicle; coating the second segment of the elongated workpiece in the painting cubicle; simultaneously introducing the first segment into the adjoining dryer, the coated second segment of the elongated workpiece into the adjoining flash-off zone, and a third segment of the elongated workpiece into the painting cubicle; and continuing to introduce each of the plurality of segments of the elongated workpiece through each of the three zones of the paint installation until each of the plurality of segments has successively been introduced into each of the three zones.
The disclosure will be explained hereinafter on the basis of the exemplary embodiments illustrated in the drawings, in which:
An exemplary painting installation is disclosed which can, for example, be optimized for coating or painting an elongated workpiece.
In accordance with the disclosure, a painting installation for coating or painting an elongated workpiece is disclosed, which is subdivided into a plurality of segments of a predetermined length L, wherein the painting installation has three zones which are arranged next to one another and are demarcated from one another. In accordance with an embodiment, a stationary painting cubicle, which has at least one painting robot, an adjoining flash-off zone and an adjoining dryer, wherein the painting cubicle, the flash-off zone and the dryer each are at least the length L, wherein at least one holder transports the workpiece along a running rail in such a way that the individual segments pass successively step-by-step through the individual zones.
In accordance with an exemplary embodiment, for example, energy savings of up to 80% can occur, based on the circulated air and heat energy used. Furthermore, the output rate is increased by reducing the cycle time.
A side view of a painting installation for coating an elongated workpiece is illustrated in
The painting cubicle 1 has an inlet E for the entry of a workpiece to be coated and an opposed outlet A for the exit of the coated workpiece. The length of the painting cubicle 1 between the inlet E and the outlet A is L. A flash-off zone 9 adjoins the outlet A of the painting cubicle 1 and is likewise at least the length L. An autonomous dryer 11, such as an infrared dryer, is arranged after the flash-off zone 9 and is likewise at least the length L. The dryer 9 is movable along a horizontal running rail 12 within predetermined limits.
A plurality of holders 21 are provided to support and hold a workpiece to be transported into the painting cubicle 1 and are movable along a running rail 22 on the base side.
A control or regulation device 24 can be provided to control the painting robots 2, 3, the dryer 11 and the holders 21 supporting the workpiece and generates control signals for these structural components and forwards these signals on to the components.
A front view of a painting installation for coating an elongated workpiece is illustrated in
An elongated workpiece to be coated, for example a rotor blade of a wind turbine, is illustrated in
Individual exemplary steps of the process for coating the elongated workpiece are illustrated in
In accordance with
In accordance with
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In accordance with
In accordance with another exemplary embodiment, in contrast to the sequence of the individual process steps as explained above, the drying time of a segment of the workpiece can be extended in the dryer 11, since the autonomous dryer 11 “accompanies” a segment to be dried as the workpiece 14 is transported. For example,
In accordance with an embodiment, if the workpiece is moved further and the drying time of a segment of the workpiece 14 located in the dryer is not yet fully complete, the dryer 11 thus follows the corresponding segment. If the segment has been dried sufficiently, the dryer 11 thus travels to the next segment to be dried, independently of the rest of the process.
In accordance with an exemplary embodiment, the workpiece 14 is painted, flashed off and dried in segments. In accordance with another exemplary embodiment, the workpiece is moved further in a plurality of individual steps, wherein it is only painted when at a standstill. The painting cubicle 1 itself is not moved. In accordance with an exemplary embodiment, at least one horizontal running rail 4, 5 is used within the painting cubicle 11 to expand the horizontal working region in which painting can be carried out when the workpiece 14 is at a standstill. Thus, for example, the horizontal painting region is not only limited to the reach of the painting robot. In addition, at least one vertical running rail 6, 7 is used within the painting machine, which can expand the vertical working range of the painting robot, for example, to reach the upper and the lower position of a robot blade.
Thus, it will be appreciated by those skilled in the art that the present disclosure can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are therefore considered in all respects to be illustrative and not restricted. The scope of the disclosure is indicated by the appended claims rather than the foregoing description and all changes that come within the meaning and range and equivalence thereof are intended to be embraced therein.
Number | Date | Country | Kind |
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102010023578.4 | Jun 2010 | DE | national |
This application claims priority as a continuation application under 35 U.S.C. §120 to PCT/EP2011/002835, which was filed as an International Application on Jun. 9, 2011 designating the U.S., and which claims priority to German Application 10 2010 023 578.4 filed in Germany on Jun. 12, 2010. The entire contents of these applications are hereby incorporated by reference in their entireties.
Number | Date | Country | |
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Parent | PCT/EP2011/002835 | Jun 2011 | US |
Child | 13710879 | US |