EP3552715B1 - Installation de revêtement par poudre pourvue d'accouplement et procédé de nettoyage du système de revêtement par poudre - Google Patents

Installation de revêtement par poudre pourvue d'accouplement et procédé de nettoyage du système de revêtement par poudre Download PDF

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Publication number
EP3552715B1
EP3552715B1 EP18167080.3A EP18167080A EP3552715B1 EP 3552715 B1 EP3552715 B1 EP 3552715B1 EP 18167080 A EP18167080 A EP 18167080A EP 3552715 B1 EP3552715 B1 EP 3552715B1
Authority
EP
European Patent Office
Prior art keywords
powder
coupling
line
cleaning
compressed air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18167080.3A
Other languages
German (de)
English (en)
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EP3552715A1 (fr
Inventor
Gilbert Lutz
Roman Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wagner International AG
Original Assignee
Wagner International AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wagner International AG filed Critical Wagner International AG
Priority to EP18167080.3A priority Critical patent/EP3552715B1/fr
Priority to PL18167080T priority patent/PL3552715T3/pl
Priority to US16/377,214 priority patent/US11020762B2/en
Priority to CN201910288062.XA priority patent/CN110369173B/zh
Publication of EP3552715A1 publication Critical patent/EP3552715A1/fr
Application granted granted Critical
Publication of EP3552715B1 publication Critical patent/EP3552715B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1409—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet the selection means being part of the discharge apparatus, e.g. part of the spray gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1472—Powder extracted from a powder container in a direction substantially opposite to gravity by a suction device dipped into the powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/04—Apparatus specially adapted for applying particulate materials to surfaces the particulate material being projected, poured or allowed to flow onto the surface of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/542—No clear coat specified the two layers being cured or baked together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities

Definitions

  • the invention relates to a coupling for connecting lines, in particular lines carrying coating powder or compressed air.
  • the invention also relates to a powder coating system with such a coupling and a method for cleaning the powder coating system.
  • the powder is sprayed onto the workpiece to be coated using one or more powder applicators.
  • the powder-coated workpiece is then heated so that the powder melts. After the workpiece has cooled down, the powder forms a hard, closed top layer on the workpiece.
  • the workpieces to be coated are usually located within a powder coating booth, which is also referred to below as a booth or coating booth for short.
  • the powder applicators are supplied with coating powder via one or more powder conveyors, which can be located in a powder center.
  • the coating process is interrupted and a so-called powder change is carried out.
  • powder change is carried out.
  • the powder for example when a different type of powder or powder with a different color is to be sprayed, more or less extensive cleaning measures are required in order to remove the remains of the previously used powder from the powder-carrying components of the system. Manual cleaning of these components can take some time. During the cleaning process, the system is not available for coating workpieces. This has a negative effect on production costs. Another disadvantage of manual cleaning is that staff run the risk of inhaling powder particles during cleaning. Furthermore, it must be ensured that the cleaning is carried out thoroughly. If, for example, the powder-carrying lines between the powder conveyor and powder applicators are not adequately cleaned, undesired color carryover can occur after a color change.
  • the fluid switch comprises a feed plate with two fluid feed lines and a purge air feed, which is arranged between the two fluid feed lines.
  • the fluid switch also includes one on the feed plate adjacent discharge plate with two fluid return lines and a discharge line, which is arranged between the two fluid return lines.
  • the feed plate can be displaced relative to the discharge plate so that the two fluid feed lines and the purge air feed can be connected to the discharge line.
  • This solution has the disadvantage that powder can be deposited between the feed plate and the discharge plate. This is particularly the case when the feed plate and the discharge plate are shifted relative to one another. The powder deposited between the plates can only be removed with difficulty and only with additional effort when cleaning the fluid switch.
  • Another disadvantage is that the connections on the feed plate cannot really be positioned exactly opposite the connections on the discharge plate. The connections, which are more or less strongly offset from one another, create steps and dead spaces in which powder can be deposited.
  • a color change system for paints is known.
  • the system comprises a stator with several media valves and a rotor with a media channel.
  • the rotor can be turned so that the mouth of the media channel is opposite the desired media valve.
  • the coupling for connecting lines comprises a first coupling disk with first line connections and a second coupling disk with second line connections.
  • a first drive is provided in order to be able to move the two clutch disks axially relative to one another.
  • a second drive is provided in order to be able to rotate the two clutch disks relative to one another.
  • the powder coating system according to the invention has the coupling described above and a powder conveyor which is connected to one of the first line connections of the coupling via a powder line.
  • a powder applicator is provided which is connected to one of the second line connections of the coupling via a further powder line.
  • a compressed air flushing line is provided which is connected to the coupling.
  • the object is also achieved by a method for cleaning the powder coating installation described above and the features specified in claim 13.
  • the method according to the invention for cleaning the powder coating installation described above comprises the following steps.
  • the clutch disks are arranged in relation to one another in such a way that the compressed air flushing line over the Coupling is connected to the powder line.
  • the powder line is flushed in the direction of the powder feeder using compressed air.
  • the two clutch disks are arranged coaxially. This enables a simple and inexpensive construction of the coupling.
  • the first clutch disc has first axial channels which are each connected to one of the first line connections.
  • the second clutch disc has second axial channels which are each connected to one of the second line connections.
  • a seal is arranged between the first channels and the second channels.
  • the seals are sleeve-shaped.
  • the coupling has an axle which is fastened to the first coupling disc.
  • the axis forms the axis of rotation for the second clutch disc.
  • the coupling is active Axle bearings between the axle and the second clutch disc.
  • the axle bearing has an air purge. This allows the degree of automation to be further increased and the cleaning of the clutch to be further improved.
  • At least some of the first line connections are arranged on a first pitch circle.
  • the first drive in the powder coating system according to the invention comprises a pneumatic cylinder.
  • a pneumatic cylinder can be produced simply and inexpensively.
  • such a drive can also be used in areas with an increased risk of explosion.
  • the second drive comprises a pneumatic cylinder.
  • a pneumatic cylinder Such a drive can be produced simply and inexpensively.
  • such a drive can also be used in areas with an increased risk of explosion.
  • At least some of the first and / or the second line connections can be designed as hose nozzles.
  • one clutch disc has a positioning pin and the other clutch disc has sockets for receiving the positioning pin.
  • the positioning pin and the bushings help to position the (axially) adjacent channels of the two clutch disks exactly to one another so that no dead space is created at the transition between the adjacent channels and the seals and no powder can be deposited there.
  • At least one spacer is arranged between the two coupling disks.
  • the compressed air flushing line is connected to one of the second line connections of the coupling.
  • another compressed air flushing line is provided, which is connected to one of the first line connections of the coupling.
  • the clutch disks are arranged with respect to one another in such a way that the further compressed air flushing line is connected to the powder applicator via the coupling and the further powder line.
  • the further powder line is flushed in the direction of the powder applicator by means of compressed air.
  • FIG. 1 and 2 a first possible embodiment of the coupling 130 according to the invention for connecting lines is shown in two different three-dimensional views.
  • Figure 3a shows the coupling 130 according to the invention in side view and Figure 4 in longitudinal section along the line AA.
  • the clutch 130 according to the invention comprises a first clutch disc 135 and a second clutch disc 136, which are preferably arranged concentrically to one another.
  • the clutch disks 136 are advantageously designed to be round or even circular.
  • the second clutch disk 136 is mounted rotatably with respect to the first clutch disk 135.
  • the double arrow 130.1 indicates this.
  • a drive 134 is provided in order to be able to rotate the second clutch disc 136.
  • the second clutch disk 136 can be moved in a translatory manner in the axial direction with respect to the first clutch disk 135.
  • the double arrow 130.2 on the clutch disk 136 indicates this.
  • a drive 133 is provided in order to be able to move the second clutch disk 136 in the axial direction.
  • the drive 133 can comprise a pneumatic cylinder 133.1. Inside the pneumatic cylinder 133.1 there is a piston 133.2 which can be brought into a first position and into a second position with compressed air.
  • the drive 133 has two compressed air connections 133.3 and 133.4 for this purpose.
  • the two compressed air connections 133.3 and 133.4 can each be connected to a compressed air source via a valve V2 or V3 (see Figure 4 ).
  • V2 or V3 see Figure 4
  • the valve V3 When the valve V3 is closed and the valve V2 is open, the compressed air flows from the left into the cylinder 133.1 and pushes the piston 133.2 to the right.
  • the piston 133.2 is shown in the right end position. If, however, the valve V2 is closed and the valve V3 is open, the compressed air flows from the right into the cylinder 133.1 and pushes the piston 133.2 to the left.
  • the piston 133.2 is positively connected to an axle 138 via a pin 133.5.
  • the axis 138 can have a corresponding receptacle for this purpose.
  • the axle 138 is rigidly connected to the first clutch disc 135, for example screwed.
  • the second clutch disk 136 is rotatably mounted on the axle 138 with the aid of a bearing 138.4.
  • the cylinder 133.1 is rigidly connected to the second clutch disk 136 via connecting rods 133.6.
  • the first clutch disk 135 can be equipped with, for example, two sockets 135.4 and 135.5 and the second clutch disk 136 can be equipped with a positioning pin 136.2 that fits into the sockets 135.4, 135.5.
  • the positioning pin 136.2 can be screwed into the clutch disk 136.
  • the clutch disc 136 moves away from the clutch disc 135, the positioning pin 136.2 is pulled out of the corresponding socket 135.4 or 135.5.
  • the piston 133.2 is pressed to the right with the aid of compressed air, the two clutch disks 135 and 136 are pushed together again and pressed against one another.
  • the positioning pin 136.2 is inserted again into the corresponding socket 135.4 or 135.5 so that the two clutch disks 135 and 136 are positioned exactly with respect to one another.
  • the clutch disc 136 is in the first rotational position. If, however, the positioning pin 136.2 is inserted into the socket 135.5, the clutch disc 136 is in the second rotational position.
  • the drive 134 can also have a pneumatic cylinder 134.1.
  • the drive 134 can be attached to a holder 135.2.
  • the holder 135.2 and the first clutch disk 135 can be implemented as components that can be separated from one another, and the clutch disk 135 can be mounted on the holder 135.2.
  • the clutch disc 135 and the holder 135.2 can also be one component.
  • the clutch disc 135 can, as in FIG Figure 1 shown to be partially round.
  • the coupling 130 can be equipped with adjustable feet 139. Inside the pneumatic cylinder 134.1 there is a piston with a piston rod 134.2, which with compressed air in a first Position and can be brought into a second position.
  • the drive 134 has two compressed air connections 134.3 and 134.4 for this purpose.
  • the two compressed air connections 134.3 and 134.4 can each be connected to a compressed air source via a valve V4 or V5 (see Figure 1 ).
  • a valve V4 or V5 see Figure 1 .
  • the valve V4 When the valve V4 is closed and the valve V5 is open, the piston is pressed into the cylinder 134.1 or the piston rod 134.2 is pulled into the cylinder.
  • the valve V5 When the valve V5 is closed and the valve V4 is open, the compressed air pushes the piston with the piston rod 134.2 out of the cylinder 134.1.
  • the piston rod 134.2 is connected to the second clutch disk 136 via a joint 134.5.
  • the clutch disk 136 rotates accordingly.
  • the angle of rotation a through which the clutch disc 136 rotates depends on the stroke of the cylinder 134.1. If the piston with the piston rod 134.2 is pulled back into the cylinder 134.1 with the aid of compressed air, the clutch disc 136 rotates back into its original position by the angle of rotation ⁇ .
  • the axle bearing or bearing 138.4 for short can, as in Figure 4 shown, for example have the shape of a socket. It is preferably equipped with an air purge.
  • the bearing 138.4 can be supplied with air for purging via the axis 138.
  • the axle 138 has a compressed air connection 138.1, to which an axially extending air duct 138.2 and at the end of the air duct 138.2 a radially extending air duct 138.3 are connected.
  • Compressed air can flow into the two air channels 138.2 and 138.3 via a valve V1 which is connected to the compressed air connection 138.1. After the air has reached the outer end of the radially extending air channel 138.3, it flows between the axis 138 and the bearing 138.4 and removes any powder that may have deposited there.
  • the two clutch disks 135 and 136 are preferably arranged coaxially, that is to say on the same axis 138.
  • the axis 138 is the bearing axis for the clutch disc 135 and its axis of rotation for the clutch disc 136.
  • the first clutch disk 135 can have a number of line connections 131.
  • the row of line connections 131 is also referred to below as the first group of line connections 131. If the line connections 131 are to be connected to a compressed air line 83, they can be designed as compressed air connections 183.1 to 183.n. If the line connections 131 are to be connected to powder lines 81.1, 82.2, ... 82.n, they can be designed as hose nozzles 131.1, 131.2, ... 131.n, where n stands for any number of line connections or lines.
  • the second clutch disk 136 can thus have a number of line connections 132.
  • the row of line connections 132 is also referred to below as the second group of line connections 132. If the line connections 132 with compressed air lines 84 are to be connected, they can be designed as compressed air connections 184.1 to 184.n. If the line connections 132 are to be connected to powder lines 82.1, 82.2, ... 82.n, they can be designed as hose nozzles 132.1, 132.2, ... 132.n.
  • the line connections 131 of the first clutch disc 135 can be distributed on a first pitch circle T1 with a radius r1 and on a second pitch circle T2 with a radius r2 (see FIG Figure 3a ).
  • 26 of the line connections 132 are located on the first partial circle T1.
  • 26 more of the line connections 132 are located on the second partial circle T2.
  • the line connections 131 are preferably arranged in the same way as the line connections 132.
  • the two partial circles T1 and T2 are preferably arranged concentrically.
  • the line connection 184.1 is connected to the line connection 183.1. Furthermore, the line connection 184.2 is connected to the line connection 183.2, the line connection 132.1 is connected to the line connection 131.1 and the line connection 132.2 is connected to the line connection 131.2. The same applies mutatis mutandis to the remaining line connections 184.3 ... 184.n, 132.3 ... 132.n, 183.3 ... 183.n and 131.3 ... 131.n. With the Coupling 130, two of the line connections can therefore be connected to one another via a channel located in the coupling disks.
  • 26 axially extending channels 135.1 are located in the first clutch disc 135 on the first pitch circle T1.
  • Each of the channels 135.1 is assigned to one of the line connections 131.
  • the second clutch disk 136 has the same structure in this regard.
  • Each of the channels 136.1 is assigned to one of the line connections 132.
  • the channels 135.1 of the first clutch disk 135 and the channels 136.1 of the second clutch disk 136 are connected to one another in pairs.
  • the transition from a channel 135.1 to the adjoining channel 136.1 is preferably equipped with a seal 137. This applies to all transitions between two channels 135.1 and 136.1.
  • the seals 137 are preferably in the form of a sleeve.
  • Spacers 135.3 can be provided between the two clutch disks 135 and 136. These can for example be attached to the clutch disc 135 (see Figure 1 ).
  • the clutch disk 135 can have threaded bores into which spacers 135.3 are screwed.
  • the spacers 135.3 between the two clutch disks 135 and 136 ensure that the seals 137 are not too tightly compressed and damaged.
  • the clutch 130 operates as follows. In a first step, with the aid of the drive 133, the second clutch disc 136 is spaced apart from the first clutch disc 135 by ⁇ x and the positioning pin 136.2 is pulled out of the one socket 135.4, for example. In a second step, the clutch disc 136 is rotated by the angle of rotation ⁇ from a first rotational position into a second rotational position. For this purpose, the piston rod 134.2 is pushed out of the cylinder 134.1. Subsequently, with the aid of the drive 133, the second clutch disk 136 is again brought up to the first clutch disk 135 and pressed against it. The positioning pin 136.2 is now inserted into the other socket 135.5.
  • the positioning pin 136.2 and the sockets 135.4 and 135.5 help to position the adjacent channels 135.1 and 136.1 exactly with respect to one another so that at the transition between the adjacent channels 135.1 and 136.1 and the seals 137 there is no dead space and therefore no powder can deposit there either.
  • the powder lines 82 can also be freed from powder with compressed air.
  • the valve V11 is opened so that compressed air flows through the line 83, the connection 183.1, the corresponding channel 135.1 of the clutch disc 135, the corresponding channel 136.1 of the clutch disc 136 and the connection 132.1 into the powder line 82.1 and the powder located there flows in the direction of the powder applicator 80 is transported out of the line 82.1.
  • the second clutch disc 136 is moved away from the first clutch disc 135. Then the clutch disk 136 is rotated back into the original rotational position, again moved up to the first clutch disk 135 and against it pressed. The powder lines are then available again for powder coating operations.
  • the connections 131 and 132 of the first and second clutch disks 135 and 136 can be assigned as desired.
  • the lines 83 can also be designed as further powder lines instead of compressed air lines.
  • powder with a first color can be transported in the powder lines 81 and powder with a second color can be transported in the lines 83.
  • the pairings of the connections 131 and 132 can be changed quickly, so that a quick and easy color change between the first and the second color can take place.
  • the clutch disk 136 can also be rotated step by step by a multiple of the angle of rotation ⁇ , so that more than two rotational positions can also be approached.
  • the embodiment shown is an example of this. In this way, for example, additional colors can be added, which can then be changed quickly and easily in the manner described above.
  • the clutch disc 136 can assume three different rotational positions: For example, in the first position the angle of rotation is 0 °, in the second position the angle of rotation is ⁇ and in the third position the angle of rotation is 2 * ⁇ . This could be powder in the first position a first color can be transported. In the second position, the powder-carrying lines can be cleaned with compressed air. In the first third position, powder with a second color can be transported.
  • a drive 134 with two pneumatic cylinders 134.1 and 134.10 is present.
  • the two pneumatic cylinders 134.1 and 134.10 are arranged one behind the other.
  • the piston rod 134.11 of the pneumatic cylinder 134.10 is supported on the holder 135.2.
  • the piston rod 134.2 of the pneumatic cylinder 134.1 is connected to the second clutch disk 136 via the joint 134.5.
  • the pneumatic cylinder 134.1 and thus the clutch disc 136 can be brought into a first and a second position.
  • the clutch disc 136 can be brought into the third position.
  • the clutch disk 136 is in its first rotational position.
  • the clutch disk 136 can be brought into the second rotational position by extending the piston rod 134.2 of the pneumatic cylinder 134.1 or the piston rod 134.11 of the pneumatic cylinder 134.10.
  • both the piston rod 134.2 of the pneumatic cylinder 134.1 and the piston rod 134.11 of the pneumatic cylinder 134.10 are extended.
  • connection 131 and 132 and the number of partial circles can also be changed and adapted to the respective requirements.
  • the illustrated embodiment of the clutch 130 on the first and the second clutch disc 135 and 136 each have three pitch circles T1, T2 and T3 with the radii r1, r2 and r3.
  • the coupling 130 according to Figure 3b has 36 line connections 135 or 136 per pitch circle.
  • the powder center 1 which is also referred to as a powder supply device, powder center or integrated powder management system, comprises a powder storage container 3, which is used to store the coating powder.
  • the powder center 1 comprises a powder conveying device 1.1, with which the powder is conveyed out of the powder storage container 3 and transported to a powder applicator 80.
  • the powder conveying device 1.1 is integrated into the powder storage container 3 and will be explained in more detail later.
  • the powder applicator 80 (see Figure 5 ) can be designed as a manual or automatic powder spraying device and has a spray nozzle or a rotary atomizer at its outlet directed towards the workpiece 65.
  • the powder center 1 is designed as a module. As a result, the powder center 1 can be transported quickly and easily as a compact unit.
  • the individual components of the powder center 1 are attached to frame profiles 2, which can be made of aluminum or steel, for example.
  • the Frame profiles 2 form the outer boundary of the powder center 1. If necessary, the powder center 1 can have a base 7.
  • the powder storage container 3 of the powder center 1 can be arranged on a base 6, for example. Like in Figure 11 shown, the powder storage container 3 can be closed with a powder container lid 23 during the conveying operation. In the embodiment shown in FIGS. 6 to 14, the powder container lid 23 has the shape of an inverted pot. With the aid of pneumatic locks 18, the powder container lid 23 with the powder storage container 3 can be sealed off. For this purpose, the powder storage container 3 has seals and locking receptacles 3.1 into which correspondingly designed counterparts of the pneumatic lock 18 can engage.
  • the pneumatic lock 18 can for example be equipped with a cylinder, a piston and a piston rod. When the lower chamber of the cylinder is pressurized with compressed air, the piston and thus also the piston rod are pushed upwards.
  • the claw located at the lower end of the piston rod engages in the locking receptacle 3.1 and causes the powder container cover 23 to be pressed onto the powder storage container 3.
  • there are three such locks 18 e.g. Figures 8 and 9 shown). The number of locks 18 and their structure can be easily adapted to the respective needs.
  • a sieve 24 which can be designed as an ultrasonic sieve.
  • the ultrasonic transducer 24.1 of the sieve 24 is preferably located outside the powder storage container 3. If the powder container cover 23 is removed, the sieve 24 is accessible and can be removed. So that this can happen automatically, the ultrasonic sieve 24 is attached to a pivot mechanism 16 via a support arm 22.
  • the sieve 24 can be moved out of the working position using the swivel mechanism 16 (see Figure 8 ) are pivoted out and brought into a cleaning position in a cleaning station 27 (see Figure 14 ).
  • the cleaning station 27 is also referred to below as a screen cleaning device or screen cleaning station.
  • a rotatably mounted cleaning arm 20 is located inside the cleaning station 27.
  • the cleaning arm 20 has a plurality of cleaning nozzles 20. 1 which are arranged on the upper side of the cleaning arm 20.
  • the cleaning station 27 also includes a cover 15 which can be opened and closed with the aid of a pneumatic cylinder 17, for example.
  • the cover 15 is pivoted about a hinge 21.
  • a curved double arrow indicates the pivoting movement.
  • the cover 15 On its underside, the cover 15 carries a cleaning arm 19, which is also equipped with a large number of cleaning nozzles 19.1.
  • the cleaning nozzles 19.1 are preferably located on the underside of the cleaning arm 19.
  • the ultrasonic sieve 24 is located between the lower cleaning arm 20 and the upper cleaning arm 19.
  • the cleaning arm 19 can be attached at both ends (as in Figure 10 shown) angled so that it has one horizontal leg and two upward sloping legs.
  • the compressed air nozzles 19.1 can be located both on the horizontal limb and on the limbs which are directed obliquely upward.
  • the cleaning arm 19 can be designed as a tube in order to guide the compressed air inside the tube to the compressed air nozzles 19.1. The same applies analogously to the lower cleaning arm 20, even if in Figure 10 the ends of the lower cleaning arm 20 are not angled.
  • the powder-air mixture located in the cleaning station 27 can be sucked off via the outlet 14.1.
  • the outlet 14.1 is connected to an inlet opening 13.2 of a suction pipe 13 via a hose not shown in the figures.
  • the powder-air mixture can be sucked into a post-filter 100 via the suction pipe 13 and a suction line 91.
  • the powder inlet of the working container 3, 23 is preferably located in its upper area. It can, for example, be arranged in the powder container cover 23 of the working container 3, 23.
  • the working container 3, 23 can also have several powder inlets.
  • the powder inlet 23.1 is connected to the powder outlet 4.2 of an intermediate container 4 via a powder valve M21, which is designed, for example, as a pneumatically controlled squeezer.
  • the intermediate container 4 serves, together with the inlet valve M20 and the outlet valve M21, as a powder conveyor 4 and is usually arranged above the working container 3, 23. In this way, the force of gravity can be used to transport powder located in the intermediate container 4 down into the working container 3, 23.
  • a second powder conveyor 5 can be arranged above the working container 3, 23. Its powder outlet also opens into the working container 3, 23.
  • the second powder conveyor 5 can be constructed like the first powder conveyor 4.
  • the powder feed device 1.1 integrated into the powder storage container 3 is explained in more detail below.
  • the powder feed device can, as in the European patent application EP 3 238 832 A1 described, be formed.
  • the working container 3, 23 is designed and operable in such a way that it can be placed under pressure. With the aid of the powder conveyor 4, powder can be conveyed out of the fresh powder station 30 and transported into the working container 3, 23.
  • the powder container lid 23, which covers the powder storage container 3 at the top there is a corresponding powder inlet available for this.
  • the working container 3, 23 has a fluidizing insert 25.1 for fluidizing the powder and a series of powder outlets 3.2 in the area of the container bottom 25. It can be provided that a powder outlet valve G1-G36 is connected to each of the powder outlets 3.2.
  • a powder line 81 is in turn connected to each of the powder outlet valves G1-G36.
  • Each of the powder lines 81 (81.1... 81.n) also has an inlet for transport air on the inlet side, that is to say in the vicinity of the respective powder outlet valve G1-G36.
  • On the output side each of the powder lines 81 is preferably connected to one of the powder applicators 80 via the coupling 130 described above and the powder lines 82 (82.1... 82.n).
  • the amount of powder to be conveyed is controlled by repeatedly opening and closing the respective powder outlet valve G1-G36 by means of a controller 70.
  • a controller 70 please refer to the above-mentioned patent application EP 3 238 832 A1 referenced, the content of which is hereby part of the present application.
  • a vibrator 220 is provided, which can be located, for example, below the powder storage container 3 (see FIG Figure 11 ). With the help of the shaking movements generated by the vibrator 220, the powder-air mixture in the powder storage container 3 can be fluidized even more evenly. In addition, the powder-air mixture can flow out of the powder outlet channel 203 even more optimally.
  • the coupling 130 has the first group of connections 131 on one coupling disk 135 and on the other Clutch disk 136 has the second group of connections 132.
  • the controller 70 can be used to set which connection of the first group 131 is connected to which connection of the second group 132. In this way, one of the powder lines 81 can be connected on the output side to a respective connection of the first group 131.
  • a powder line 82 which on the other hand is connected to one of the powder applicators 80, can be connected to each connection of the second group 132.
  • 36 powder outlet valves G1-G36 are used. However, a greater or lesser number of powder outlet valves can also be used. The number of powder outlet valves used depends on the number of powder applicators 80 used.
  • a powder injector that works according to the Venturi principle or a powder pump for dense phase conveyance can also be provided.
  • a powder pump for dense phase conveyance a hose pump or a powder injector can also be provided.
  • the powder storage container 3 and its powder container lid 23 as well as the two powder conveyors 4 and 5 are attached to a vertical linear axis 12 and can thus be moved up and down.
  • the drive 12.1 of the linear axis 12 can be located at the top of the linear axis 12.
  • the vertical double arrow in Figure 11 indicates its direction of movement.
  • the powder center 1 also comprises a container cleaning unit 28 or, in short, a cleaning unit, which comprises a cleaning container 10, an upper cleaning arm 11 and a lower cleaning arm 26.
  • the upper cleaning arm 11 and the lower cleaning arm 26 are rotatably mounted in the cleaning container 10 and each have a plurality of cleaning nozzles 11.1 and 26.1 operated with compressed air.
  • the cleaning container 10 is attached to a linear drive 9 and can be moved vertically up and down (in the y-direction) with this.
  • the vertical double arrow in Figure 11 indicates its direction of movement.
  • the drive 9.1 of the linear drive 9 can be located at the top of the linear drive 9.
  • the linear drive 9 is in turn attached to a horizontally aligned linear drive 8 (also called a linear axis) and can be moved back and forth horizontally (in the x direction) with it.
  • the drive 8.1 of the linear axis 8 can be arranged on the side of the linear axis 8. With the linear axis 8 it is possible to position the container cleaning unit 28 laterally next to the working container 3, 23 during the conveying operation (see FIG Figures 6 to 9 ).
  • the container lid 23 is first moved upwards; Then the container cleaning unit 28 can be positioned with the aid of the two linear drives 8 and 9 in such a way that the cleaning container 10 is first brought over the powder storage container 3 and then lowered so far that the cleaning arm 26 is at a defined distance from the floor 25 of the powder storage container 3 having.
  • the cleaning arm protruding from the cleaning container 10 at the bottom 26 is then located inside the powder storage container 3 and is used to clean the inner wall and the bottom 25 of the powder storage container 3.
  • the powder container lid 23 can be lowered so far that the inside surfaces of the powder container lid 23 can be blown off and thus cleaned with the cleaning arm 11 protruding from the cleaning container 10.
  • the cleaning arm 11 protrudes into the interior of the powder container lid 23.
  • a possible embodiment of the fresh powder station 30 is shown in Figures 15 to 18 shown in different views.
  • the fresh powder station 30 can, for example, be designed as an independent module.
  • the station comprises a first floor space 31 and a second floor space 32, each of which has a powder box 110, 111 (see Figure 5 ) be able to record.
  • the two storage surfaces 31 and 32 are preferably arranged at an angle, so that the powder moves obliquely downwards into a corner in the powder carton with the assistance of gravity. In this way, the powder cardboard can be emptied completely or almost completely with the aid of a suction lance 33 without great effort.
  • the suction lance 33 is, as in Figures 17 and 18 shown, horizontally movable with the aid of a linear drive 44, so that it can be used both for a powder carton arranged on the first placement surface 31 and for a powder carton arranged on the second placement surface 32. Furthermore, the fresh powder station 30 has an additional linear drive 38 so that the suction lance 33 can also be moved vertically.
  • a vibrator 54 and a scale 46 are located below the footprint 31 for the powder carton 110.
  • the vibrator 54 is used to set the powder in the carton 110 in motion so that it is better distributed and flows in the direction of the suction lance 33.
  • the filling level in the carton 110 can be determined via the scales 46, and if the filling level falls below a certain level, the powder cartons can be changed.
  • the measurement signal generated by the balance 46 can be used to identify whether there is still enough space in the box 110 when powder is to be conveyed via the line 96 from the powder center 1 back to the powder station 30.
  • a vibrator 55 and a scale 47 are also located under the floor space 32. Their purpose corresponds, mutatis mutandis, to the same as the vibrator 54 and the scale 46 in the floor space 31.
  • the fresh powder station 30 additionally has a cleaning station 52 which is equipped with a scraper ring and / or compressed air nozzles and / or a suction device. In this way, the outside of the suction lance 33 can be freed of powder adhering there during the up and down movement.
  • air nozzles 57 can be attached to the cleaning station 53 in order to clean the lower area of the suction lance 33. If the suction lance 33 has a fluidizing crown in order to fluidize the powder in the suction area, this can also be cleaned with it.
  • a BigBag 120 with a pump 123 can also be provided.
  • the powder can be pumped directly to the powder conveyor 4 by the pump 123 via a powder line 126.
  • the BigBag 120 or 121 is also known as the Flexible Intermediate Bulk Container or FIBC for short. It usually contains larger amounts of powder than the powder carton 110 and the powder carton 111.
  • the BigBag 120/121 is also usually further away from the powder conveyor 4 than the powder carton 110 or 111 Example 30m to the powder conveyor 4, whereas the powder carton 110 or 111 is, for example, 5m away from the powder conveyor 4.
  • the fresh powder station 30 can have several compressed air control valves 39 and 40 and control buttons 41 and 42.
  • the compressed air control valve 39 can be provided for adjusting the fluid air of the fluid base of the powder container 150.
  • the compressed air control valve 40 is used to adjust the fluidizing air on the fluidizing crown of the suction lance 33.
  • the position of the exhaust air flap can be controlled with the aid of the adjusting knob 41. Via the adjusting knob 42 a confirmation signal can be sent to the controller.
  • the fresh powder station 30 can have a suction 37 with a suction opening 37.1 in order to be able to suck off excess powder from the interior of the fresh powder station 30.
  • the fresh powder station 30 can also have a flexible suction hose which can be used for manual cleaning if necessary.
  • the fresh powder station 30 has a swivel mechanism 45 for the powder conveyor 49.
  • the pivot mechanism 45 has a drive, which can be designed as a pneumatic drive, for example, and a pivot arm 45.1.
  • the powder feeder 49 can be brought from the conveying position into a cleaning position. In the cleaning position, the powder conveyor 49 protrudes into the interior of the fresh powder station 30.
  • air nozzles 56 can be provided to clean the lower area of the powder conveyor 49 when it is pivoted from the conveying position into the cleaning position or from the cleaning position into the conveying position.
  • the pneumatic drive can comprise two pneumatically driven cylinders.
  • the powder conveyor 49 can thus be brought into a cleaning position, a first conveying position and a second conveying position. To move the powder feeder 49 into the cleaning position (see Fig. 15 ), cylinder 1 and cylinder 2 are retracted. In the first conveying position, the powder conveyor 49 is above the floor space 31. For this purpose, the Cylinder 1 retracted and cylinder 2 extended. In the second conveying position, the powder conveyor 49 is located above the placement surface 32; cylinders 1 and 2 are extended. In the first conveying position, powder can be conveyed back into the powder box 110 and in the second conveying position powder can be conveyed back into the powder box 111.
  • the suction lance 33 can be brought into three different positions with the linear axis 38 and the linear drive 44: In the cleaning position (see Fig. 15 ) the suction lance 33 is located in the cleaning station 53. In the first conveying position, the suction lance 33 is above the placement surface 31 and in the second conveying position above the placement surface 32.
  • the fresh powder station 30 can also be equipped with its own controller 43. With the aid of this controller 43, for example, the suction lance 33, the cleaning station 52 for the suction lance 33, the linear axis 38, the linear drive 44, the pivoting mechanism 45 and the blow nozzles 56 and 57 can be controlled.
  • the powder conveyor 49 shown is advantageously positioned directly above the powder carton 110 or 111 into which it is to convey powder back. Since it uses gravity, after the outlet valve 49.2 of the powder conveyor 49 is opened, the powder falls into the powder carton located below the powder conveyor 49.
  • the powder conveyor 49 serving to return the powder can also be designed differently. For example, it can be designed as a powder pump. Since the force of gravity is not used in such a powder pump, it can be arranged at different locations. It can also be at the same level as the powder carton 110, for example.
  • two covers 35 and 36 can be provided, which can be opened manually.
  • the staff thus also have access to the interior of the fresh powder station 30 from above.
  • the fresh powder station 30 can also be equipped with side walls 34 and a rear wall 48.
  • FIG Figure 5 A possible embodiment of an entire system for powder coating workpieces 65 is shown in FIG Figure 5 shown simplified as a block diagram.
  • the entire system can be controlled via a central controller 70.
  • the controller 70 can be connected to various components of the entire system via corresponding control lines (not shown in the figures) and provided to control the powder coating booth 60 including powder applicators 80, the fresh powder station 30, the powder center 1, the powder recovery 90 and / or the post-filter 100 to control.
  • the fresh powder station 30 can have a separate controller 43. The same applies to all other components of the entire system for coating workpieces with powder.
  • the excess powder which is also referred to as overspray, must be removed again from the booth 60. On the one hand, this is necessary because the area outside the booth must be kept free of powder dust. On the other hand, the risk of explosion increases if a certain powder concentration is exceeded by the powder dust cloud floating in the cabin. This must be avoided.
  • the overspray occurring during the coating process is sucked out of the cabin 60 as a powder-air mixture together with the air in the cabin 60 and fed to a device for powder recovery 90 via a residual powder pipeline 92.
  • the device for powder recovery 90 can be designed as a cyclone, for example.
  • the powder recovered there can, if necessary, be fed back to the powder center 1 via a powder line 94.
  • the powder-air mixture can be fed from the cyclone to the post-filter 100 via a suction line 93.
  • the powder-air mixture in the residual powder pipeline 92 is also referred to as the residual powder air flow.
  • the booth 60 has, for example, a suction slot. It connects the interior of the booth 60 with the residual powder pipeline 92. Excess powder is thus removed from the powder as a powder-air mixture via the suction slot and the suction pipe 61 The cabin interior is sucked off and fed to a cyclone separator 90 or cyclone for short, which can be designed as a monocyclone.
  • the powder-air mixture flows tangentially into the cyclone 90 and spirally downwards in the cyclone.
  • the powder particles are pressed outward against the outer wall of the cyclone 90 by the centrifugal force that occurs during the rotation of the powder-air flow.
  • the powder particles are conveyed downwards in the direction of the powder outlet of the cyclone and collected there.
  • the air freed from the powder particles is sucked off via the vertical central pipe located in the cyclone 90.
  • the air stream cleaned in this way is often also fed to a post-filter 100 in order to filter out the powder remaining in the air.
  • the powder recovered in the cyclone 90 can be used again for coating and fed to the powder center 1 via the powder line 94.
  • the ultrasonic sieve 24 is located in the working container 3, 23 between the powder storage container 3 and the powder container lid 23.
  • the locks 18 ensure that the working container is hermetically sealed.
  • the screen cleaning device 27 and the container cleaning unit 28 are located as in FIG Figures 6 to 8 shown in the park position.
  • the parking position for the container cleaning unit 28 is located next to the powder storage container 3.
  • the phrase “next to the powder storage container” also includes above, below, in front of or behind the powder storage container.
  • the sieve 24 is not absolutely necessary for the conveying operation.
  • the powder can also be conveyed without an ultrasonic sieve or entirely without a sieve 24.
  • the powder conveyance from the powder storage container 3 is stopped and the remaining powder still in the powder storage container 3 is sucked off with the powder conveyor 49 via the outlet 25.1 and the line 96.
  • the material valve M11 is opened for this purpose, the flushing valve S12 is closed during this time.
  • the overpressure still prevailing in the working container 3, 23 is reduced to normal pressure and the locks 18 are opened.
  • the linear drive 12 lifts the container cover 23 so far that the cleaning container 10 can be moved between the powder container cover 23 and the powder storage container 3 with the aid of the two linear axes 8 and 9.
  • the container cleaning unit 28 with the cleaning container 10 is then lowered until the lower cleaning arm 26 is located inside the powder storage container 3 and is at a defined distance from the bottom 25 of the powder storage container 3.
  • the powder container lid 23 is now lowered until the upper cleaning arm 11 is inside the powder container lid 23 and is at a defined distance from the powder container lid 23.
  • an air gap remains between the powder container lid 23 and the cleaning container 10.
  • An air gap also remains between the powder container 3 and the cleaning container 10. Air is sucked in from the post-filter 100 via the air gap. This prevents the powder-air mixture generated by the compressed air nozzles 11.1 and 26.1 during the cleaning process from escaping into the environment.
  • the unit comprising the powder container cover 23, cleaning container 10 and powder storage container 3 can be sealed off in an airtight manner with the locks 18.
  • compressed air is blown through the nozzles 11.1 and 26.1 in the direction of the inner walls of the powder container lid 23 and of the powder storage container 3.
  • the resulting powder-air mixture is sucked off via the suction line 13 and can be fed to the cyclone 90 and / or the post-filter 100.
  • the cover 15 is closed with the aid of the pneumatic cylinder 17.
  • An air gap can remain between the cover 15 and the cleaning container 14.
  • the cover 15 can also be placed on the cleaning container 14 in an airtight manner.
  • Compressed air is now blown through the nozzles 19.1 and 20.1 onto the sieve 24 from above and below.
  • the resulting powder-air mixture is sucked off via the suction line 13 and can be fed to the cyclone 90 and / or the post-filter 100.
  • the following cleaning steps can be performed.
  • the steps are preferably carried out automatically and coordinated by the controller 70.
  • the cleaning unit 28 With the cleaning unit 28, the powder storage container 3 and the container lid 23 are cleaned as described above.
  • a change to a different coating powder is carried out.
  • the other coating powder can be the powder with which the workpieces 65 are to be coated next. However, this is not absolutely necessary. Instead, you can switch to a special cleaning agent.
  • the cleaning agent can, for example, be granules with a grain size between 2 mm and 7 mm.
  • the grain size, the grain material and the grain quality are preferably selected so that on the one hand they can be conveyed through all openings in the powder system and on the other hand they have a good cleaning effect.
  • the cleaning agent it is advantageous to ensure that no additional wear and tear occurs in the powder system and no chemical incompatibility with the coating powder occurs.
  • conveyor mode is switched to for a limited period so that the other coating powder or cleaning agent flows through the individual components of the system. For example, 3 kg of powder can be lost during the short conveyor operation.
  • the material the powder or the cleaning agent
  • the powder lines 91, 92, 93 and 94 can also be rinsed with the new material. This is particularly of It is an advantage if the new powder is used for recycling.
  • the powder storage container 3 and the container lid 23 are then cleaned again with the aid of the cleaning unit 28.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Coating Apparatus (AREA)

Claims (14)

  1. Installation de revêtement par poudre,
    - dans laquelle un raccord (130) est prévu pour la connexion de conduites,
    - dans laquelle le raccord (130) présente un premier disque de raccord (135) avec des premiers branchements de conduite (131) et un second disque de raccord (136) avec des seconds branchements de conduite (132),
    - dans laquelle le raccord (130) présente un premier entraînement (133) pour pouvoir déplacer axialement les deux disques de raccord (135 ; 136) l'un par rapport à l'autre,
    - dans laquelle le raccord (130) présente un second entraînement (134) pour pouvoir tourner les deux disques de raccord (135 ; 136) l'un par rapport à l'autre,
    - dans laquelle un dispositif de transport de poudre (1.1) est prévu, lequel est connecté par le biais d'une conduite de poudre (81) à un des premiers branchements de conduite (131) du raccord (130),
    - dans laquelle un applicateur de poudre (80) est prévu, lequel est connecté par le biais d'une autre conduite de poudre (82) à un des seconds branchements de conduite (132) du raccord (130),
    - dans laquelle une conduite de rinçage à air comprimé (84) est prévue, laquelle est connectée à un des seconds branchements de conduite (132) du raccord (130), et
    - dans laquelle une autre conduite de rinçage à air comprimé (83) est prévue, laquelle est connectée à un des premiers branchements de conduite (131) du raccord (130).
  2. Installation de revêtement par poudre selon la revendication 1,
    dans laquelle les deux disques de raccord (135 ; 136) sont disposés de manière coaxiale.
  3. Installation de revêtement par poudre selon la revendication 1 ou 2,
    - dans laquelle le premier disque de raccord (135) présente des premiers canaux axiaux (135.1) qui sont connectés avec à chaque fois un des premiers branchements de conduite (131),
    - dans laquelle le second disque de raccord (136) présente des seconds canaux axiaux (136.1) qui sont connectés avec à chaque fois un des seconds branchements de conduite (132), et
    - dans laquelle un joint (137) est à chaque fois disposé entre les premiers canaux (135.1) et les seconds canaux (136.1).
  4. Installation de revêtement par poudre selon la revendication 3,
    dans laquelle les joints (137) sont réalisés en forme de manchon.
  5. Installation de revêtement par poudre selon une des revendications 1 à 4,
    dans laquelle le raccord (130) présente un arbre (138) qui est fixé au premier disque de raccord (135) et qui forme l'axe de rotation pour le second disque de raccord (136).
  6. Installation de revêtement par poudre selon la revendication 5,
    - dans laquelle le raccord (130) présente un palier (138.4) qui est prévu entre l'arbre (138) et le second disque de raccord (136), et
    - dans laquelle le palier (138.4) présente un rinçage à l'air (138.1, 138.2, 138.3).
  7. Installation de revêtement par poudre selon une des revendications 1 à 6,
    dans laquelle au moins une partie des premiers branchements de conduite (131) est disposée sur un premier cercle partiel (T1).
  8. Installation de revêtement par poudre selon la revendication 7,
    dans laquelle une autre partie des premiers branchements de conduite (131) est disposée sur un second cercle partiel (T2).
  9. Installation de revêtement par poudre selon une des revendications 1 à 8,
    dans laquelle le premier entraînement (133) et/ou le second entraînement (134) comprend un cylindre pneumatique (133.1 ; 134.1).
  10. Installation de revêtement par poudre selon une des revendications 1 à 9,
    dans laquelle au moins une partie des premiers et/ou des seconds branchements de conduite (131 ; 132) sont réalisés en tant qu'embouts à olive.
  11. Installation de revêtement par poudre selon une des revendications 1 à 10,
    dans laquelle un des disques de raccord (136) présente une broche de positionnement (136.2) et l'autre disque de raccord (135) présente des douilles (135.4, 135.5) pour la réception de la broche de positionnement (136.2).
  12. Installation de revêtement par poudre selon une des revendications 1 à 11,
    dans laquelle le raccord (130) présente au moins un écarteur (135.3) qui est prévu entre les deux disques de raccord (135, 136).
  13. Procédé de nettoyage de l'installation de revêtement par poudre selon une des revendications 1 à 12,
    - dans lequel les disques de raccord (135, 136) sont disposés l'un par rapport à l'autre de sorte que la conduite de rinçage à air comprimé (84) est connectée par le biais du raccord (130) à la conduite de poudre (81),
    - dans lequel la conduite de poudre (81) est rincée au moyen d'air comprimé en direction du dispositif de transport de poudre (1.1).
  14. Procédé de nettoyage de l'installation de revêtement par poudre selon la revendication 13,
    - dans lequel les disques de raccord (135, 136) sont disposés l'un par rapport à l'autre de sorte que l'autre conduite de rinçage à air comprimé (83) est connectée par le biais du raccord (130) et de l'autre conduite de poudre (82) à l'applicateur de poudre (80),
    - dans lequel l'autre conduite de poudre (82) est rincée au moyen d'air comprimé en direction de l'applicateur de poudre (80).
EP18167080.3A 2018-04-12 2018-04-12 Installation de revêtement par poudre pourvue d'accouplement et procédé de nettoyage du système de revêtement par poudre Active EP3552715B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18167080.3A EP3552715B1 (fr) 2018-04-12 2018-04-12 Installation de revêtement par poudre pourvue d'accouplement et procédé de nettoyage du système de revêtement par poudre
PL18167080T PL3552715T3 (pl) 2018-04-12 2018-04-12 Instalacja powlekania proszkowego ze sprzęgłem i sposób czyszczenia instalacji powlekania proszkowego
US16/377,214 US11020762B2 (en) 2018-04-12 2019-04-07 Coupling for the connecting of lines, powder coating facility including the coupling, and method for cleaning of the powder coating facility
CN201910288062.XA CN110369173B (zh) 2018-04-12 2019-04-11 粉末涂覆设备及其清洁方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18167080.3A EP3552715B1 (fr) 2018-04-12 2018-04-12 Installation de revêtement par poudre pourvue d'accouplement et procédé de nettoyage du système de revêtement par poudre

Publications (2)

Publication Number Publication Date
EP3552715A1 EP3552715A1 (fr) 2019-10-16
EP3552715B1 true EP3552715B1 (fr) 2021-02-17

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US (1) US11020762B2 (fr)
EP (1) EP3552715B1 (fr)
CN (1) CN110369173B (fr)
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KR102649715B1 (ko) * 2020-10-30 2024-03-21 세메스 주식회사 표면 처리 장치 및 표면 처리 방법
US11465169B1 (en) * 2021-03-24 2022-10-11 Royce Metal Products Limited Apparatus for coating or mixing items with controlled unloading
CN114308435B (zh) * 2022-03-08 2022-05-27 季华实验室 喷涂送粉装置

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US6705545B1 (en) * 1998-11-13 2004-03-16 Steelcase Development Corporation Quick color change powder paint system
WO2011085012A2 (fr) * 2010-01-06 2011-07-14 Advanced Technology Materials, Inc. Systèmes de distribution de liquide avec dégazage et capacités de détection
EP2361691A1 (fr) 2010-02-19 2011-08-31 Ramseier Koatings Technologies AG Sélecteur pour fluides
DE102015102332A1 (de) * 2014-02-18 2015-08-20 Apson Lackiertechnik Gmbh Farbwechselsystem
BR112016026477A2 (pt) * 2014-05-13 2017-08-15 Smidth As F L Aparelho de preparação de amostra de dosagem e limpeza e métodos do mesmo
EP3285891A4 (fr) * 2015-04-20 2019-02-27 Akron Brass Company Dispositif de modèle amélioré de pulvérisateur de mousse
CN205056299U (zh) * 2015-09-28 2016-03-02 华南理工大学 一种多喷枪静电粉末喷涂控制系统
PL3238832T3 (pl) 2016-04-29 2021-01-25 Wagner International Ag Urządzenie transportujące proszek do transportowania proszku powlekającego do aplikatora proszku, instalacja do powlekania proszkowego i sposób obsługi urządzenia transportującego proszek
DE102016118396A1 (de) * 2016-06-21 2017-12-21 Apson Lackiertechnik Gmbh Medienventil für einen Lackwechsler

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Publication number Publication date
CN110369173B (zh) 2022-02-18
PL3552715T3 (pl) 2021-08-30
CN110369173A (zh) 2019-10-25
US11020762B2 (en) 2021-06-01
US20190314844A1 (en) 2019-10-17
EP3552715A1 (fr) 2019-10-16

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