EP3297766A2 - Coating system and associated operating method - Google Patents
Coating system and associated operating methodInfo
- Publication number
- EP3297766A2 EP3297766A2 EP16723939.1A EP16723939A EP3297766A2 EP 3297766 A2 EP3297766 A2 EP 3297766A2 EP 16723939 A EP16723939 A EP 16723939A EP 3297766 A2 EP3297766 A2 EP 3297766A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- coating agent
- agent mist
- air
- booth
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
-
- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- 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
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to 3D-surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
- B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
- B05B14/469—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material wherein the washing material is the spraying material
-
- 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
- B05B15/555—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 discharged by cleaning nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
- B05B16/95—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth the objects or other work to be sprayed lying on, or being held above the conveying means, i.e. not hanging from the conveying means
-
- 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
- B05C15/00—Enclosures for apparatus; Booths
-
- 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
- B05B12/1472—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 separate supply lines supplying different materials to separate outlets of the spraying apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
- B05B14/468—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material with scrubbing means arranged below the booth floor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material
Definitions
- the invention relates to an operating method for a coating installation, in particular for a painting installation for painting motor vehicle body components. Furthermore, the invention comprises a corresponding coating system.
- the vehicle body components to be painted are usually conveyed by a conveyor along a painting line through a plurality of successive painting booths in which the various paint layers (eg basecoat, clearcoat) are applied.
- various paint layers eg basecoat, clearcoat
- the application of the paint to be applied is usually carried out by rotary atomizers, which are guided by multi-axis painting robots highly mobile.
- rotary atomizers which are guided by multi-axis painting robots highly mobile.
- a large part of the applied paint deposits on the motor vehicle body component to be painted, where it forms the desired lacquer layer.
- the interfering coating agent mist presses down through the grid floor designed as a grid floor into a washout, which can be in the form of a dry separation or wet washout and which washes out the coating agent contained in the coating agent mist.
- the problem in particular is the removal of the troublesome coating agent mist which arises in the interior of the motor vehicle body components to be painted by internal painting of interior surfaces of the motor vehicle body components.
- the downwardly directed air flow generated by the filter cover is in this case in fact shielded by the roof of the motor vehicle body components and, therefore, can remain relatively long in the interior of the motor vehicle components to be painted despite the downward flow of air.
- the disturbing coating agent mist can then escape from the interior of the motor vehicle body components and disturb the next painting process if the coating agent mist can not then be removed quickly enough.
- the invention is therefore based on the object of correspondingly improving the removal of the interfering coating agent mist ("overspray”) from a coating booth.
- the invention is based on the already briefly mentioned above technical-physical knowledge that the disturbing excess coating agent mist ("overspray”) particular Because of two phenomena, it initially remains in the coating booth and therefore has to be removed.
- the air sink rate in the paint booth is lower in modern paint shops than in older paint shops.
- the paint in the coating booth but also favored by interior coatings, the paint is applied in the interior of a motor vehicle body.
- the inertia When removing a vehicle body from the paint booth, the inertia then pushes the coating agent mist out of the vehicle body through the rear window.
- the resulting airstream causes the interfering coating agent mist through the rear window from the motor vehicle body.
- the two disturbing phenomena described above can lead to the disturbing coating agent mist from the last painted vehicle body on the next vehicle body can deposit, which can lead to quality problems.
- the invention therefore provides that the disruptive coating agent mist ("overspray") in a coating booth is not removed, or at least not only by the known downwardly directed air flow generated by the conventional filter blanket the interfering coating agent mist in the coating booth is removed by a separate, downwardly directed air flow that is not generated by the filter blanket.
- this separate air flow is spatially limited and does not extend over the entire cabin interior, whereby this separate air flow differs from the known air flow generated by the filter cover.
- this separate air flow is not aligned exactly vertically from top to bottom, but angled in the conveying direction, for example at an angle of 5 ° -60 °, 10 ° -55 ° or 15 ° -45 ° to the vertical.
- This angling of the downwardly directed air flow is advantageous because the interfering coating agent mist is then also partly removed in the direction of the cabin exit, whereby the area of the cabin interior close to the cabin entrance is cleaned faster.
- This oblique angle of the air flow in the conveying direction relative to the vertical is also possible in the context of the invention in the downwardly directed air flow, which is generated by the filter cover.
- the invention therefore also encompasses a variant of the invention in which the downward air flow from the filter cover is angled in the conveying direction without generating an additional air flow for the removal of the interfering coating agent mist.
- the downward flow of air is generated bypassing the filter cover, so that the maximum achievable flow rate is not limited by the flow resistance of the filter in the filter cover.
- the downward flow of air is generated by an additional flow device, for example by a movable manipulator.
- the separate air flow for removing the coating agent mist is generated by a movable manipulator having a plurality of axes of movement which is movably arranged in the cabin interior.
- this manipulator for removing the interfering coating agent mist is a multi-axis robot with a serial or parallel robot kinematics.
- the movable manipulator has a single movement axis.
- this manipulator removes the disturbing coating agent mist from the cabin interior by blowing air into the interior of the cabin, the injected air being directed towards the disturbing coating. coating agent mist and removes it from the cabin interior or at least accelerates the removal of the coating agent mist.
- the manipulator removes the disturbing coating agent mist from the cabin interior by sucking off the coating agent mist.
- the manipulator for removing the interfering coating agent mist can be arranged in a stationary manner within the coating booth within the scope of the invention.
- the manipulator for removing the coating agent mist on a Verfahrschiene along the conveying direction is movable.
- the installation of the manipulator for removing the coating agent mist there are various possibilities within the scope of the invention.
- the manipulator can be suspended from a ceiling of the coating booth and then release the air flow downwards into the coating booth to remove the interfering coating agent mist.
- This hanging mounting of the manipulator on the ceiling of the coating booth is also advantageous because the manipulator itself then little is susceptible to contamination because the disturbing coating agent mist near the ceiling hardly or only occurs in low density.
- the manipulator for removing the coating agent mist is mounted laterally on the coating booth and, optionally, standing on the cabin floor or hanging on the side walls. There are also various possibilities with regard to the type of manipulator for removing the coating agent.
- the manipulator is an articulated robot with a serial robot kinematics and a plurality of non-parallel pivot axes, such prior art articulated robots being well known in conventional paint shops, for example also as application robots or handling robots (e.g. Hood openers, door openers).
- application robots or handling robots e.g. Hood openers, door openers.
- the manipulator for removing the coating agent mist is a so-called SCARA robot (SCARA: Selective Compliance Assembly Robot Arm), such SCARA robots being known per se from the prior art and, for example be used in paint shops for painting automotive body components as a door opener.
- SCARA robots being known per se from the prior art and, for example be used in paint shops for painting automotive body components as a door opener.
- a feature of such SCARA robots is that the pivot axes of the various robot members are aligned parallel to one another and are typically perpendicular.
- the manipulator for removing the interfering coating agent is a robot with parallel kinematics.
- the manipulator for removing the interfering coating agent is a multi-axis application robot, which also guides the application device (eg rotary atomizer) for applying the coating agent.
- the application robot thus has several functions.
- the application robot guides the application device (eg rotary atomizer) over the component surface of the components to be coated, in order to apply coating agents (eg paint).
- the application robot also serves to remove the disturbing coating agent mist from the cabin interior of the coating booth.
- the application device can blow out shaping air that is normally used for shaping the spray jet and then used selectively to remove the interfering coating agent mist from the coating booth.
- the application device can blow out shaping air that is normally used for shaping the spray jet and then used selectively to remove the interfering coating agent mist from the coating booth.
- the application device can blow out shaping air that is normally used for shaping the spray jet and then used selectively to remove the interfering coating agent mist from the coating booth.
- the application device can blow out shaping air that is normally used for shaping the spray jet and then used selectively to remove the interfering coating agent mist from the coating booth.
- the spray jet In normal application mode, the
- shaping air is used to form the spray jet.
- the shaping air can also be used to blow away the interfering coating agent mist and thereby to remove it, wherein, of course, no application of coating agent takes place in this mode of operation.
- the application robot in addition to or instead of the shaping air nozzles, has a separate air nozzle which only serves to remove the interfering coating agent mist.
- the manipulator for removing the coating agent it is possible for the manipulator for removing the coating agent to be a handling robot, for example a door opener or a hood opener which is used in a paint shop for painting motor vehicle body components, for doors or bonnets or trunk lid for a subsequent Interior painting to open.
- the manipulator for removing the interfering coating agent mist is provided exclusively for this purpose and serves neither for application of the coating composition nor for handling the components to be coated, which optimizes the construction of the manipulator for the purpose of removal of the coating agent mist.
- the interfering coating agent mist can be removed from the cabin interior by allowing air to be blown in by the manipulator, for which purpose the manipulator (eg application robot, handling robot or separate robot) can guide an air nozzle.
- the manipulator eg application robot, handling robot or separate robot
- the manipulator comprises a proximal robot arm and a relatively pivotable distal robot arm, wherein the air nozzle for removing the coating agent mist may be attached to the proximal robot arm and / or to the distal robot arm.
- the air nozzle for removing the coating agent mist is located on the distal robot arm.
- a plurality of air nozzles are preferably provided, which are arranged in the form of a nozzle bar in a line one behind the other can.
- this nozzle bar is arranged on the distal robot arm and extends along the longitudinal direction of the distal robot arm.
- the nozzle bar is arranged at the end of the manipulator and is always aligned at right angles to the conveying direction and horizontal.
- the components to be coated are not conveyed directly to their final coating position during conveying into the coating booth, but first to a preposition which lies upstream in the conveying direction before the final coating position.
- the vehicle body components to be painted in the pre-position can project into the spray booth with their front area, so that the front area (eg engine hood, front fenders) can be painted in this pre-position while the disturbing coating agent mist at the final coating position within the spray booth still Will get removed.
- the components are then subsequently conveyed from the pre-position to the final coating position when the coating agent mist is removed in the region of the final coating position and the component has been coated at the front-end position.
- the remaining surface areas eg trunk lid, roof, doors, rear fenders
- coating agent mist can emerge from the component or be swirled up by the discharged component, which makes the removal of the coating agent mist from the cabin interior more difficult.
- the distance of the coating agent mist provided by the invention is therefore preferably concentrated spatially on a cleaning area, wherein the cleaning area does not cover the entire cabin interior, but is limited to the area of the conveyed component, where the disturbing coating agent mist exits the component and disturbing air turbulence is generated.
- the cleaning area may also be restricted to that area of the cabin interior which lies slightly behind the component with respect to the conveying direction, since the interfering coating agent mist exits the component during the removal of a component, so that this coating agent mist must also be removed there.
- the coating system according to the invention preferably has a control device which controls the movements of the conveyor and the cleaning area synchronized with each other.
- the control device thus preferably also controls the movement of the manipulator, which removes the interfering coating agent mist.
- the invention is particularly advantageous if the components to be coated are conveyed through the coating booth in stop-and-go operation, since the components are then accelerated or decelerated during conveying or discharging out of the coating booth, resulting in air turbulence make it difficult for the coating agent mist to be removed by the downward flow of air from a conventional filter blanket.
- the invention allows this in conjunction with a correspondingly fast conveyor technology a delivery time of less than 13 seconds, 11 seconds or less than 9 seconds, the delivery time in stop-and-go operation, the period from a standstill of a component to the next standstill of the same component is.
- the components to be coated are first accelerated during the removal from the coating booth with a relatively low acceleration, for which then the delay during braking is greater for compensation.
- the relatively low acceleration during discharge is advantageous, because then less disturbing air vortex are generated, which keep the disturbing coating agent mist longer in the cabin interior.
- the relatively slow acceleration when conveying out of the coating booth is also advantageous because the coating agent mist present in the interior of the respective component then does not emerge from the component, or at least not completely outwards.
- the invention is not limited to automotive body components with regard to the component to be coated. Rather, the components to be coated may be any components, such as rotor blades of wind turbines or parts thereof (eg rotor blade half shells) thereof or aircraft row (eg, wings, tail parts, fuselage parts, etc.).
- the invention is not restricted to lacquers (eg basecoat, clearcoat) or certain types of lacquer (eg wet lacquer, powder lacquer).
- the coating agent may be any desired coating agent, the application of which produces an interfering coating agent mist overspray.
- This downward flow of air can, for example, also be generated by a blast nozzle arrangement which controls the flow of air through at least one blast nozzle
- This blast nozzle arrangement is preferably arranged above the conveying device and also above the components to be coated, for example, on a conveyor belt. ner cabin ceiling or on a portal that spans the conveyor.
- the blast nozzle arrangement preferably extends transversely to the conveying direction through the coating booth and is preferably movable in the conveying direction. This means that the blowing nozzle arrangement can be moved back and forth in the conveying direction.
- the drive of the movable Blasdüsenan angel can be done for example by a cable drive.
- this blowing nozzle arrangement is pivotable about an axis of rotation transversely to the conveying direction.
- the blowing nozzles are preferably spaced apart from the axis of rotation, so that the blowing nozzles execute a curved movement in a vertical plane parallel to the conveying direction during a pivoting movement of the blowing nozzle arrangement.
- the blowing nozzle arrangement preferably ensures that the blowing nozzles are held in a constant angular orientation relative to the vertical during a pivoting movement.
- the blast nozzles thus remain aligned vertically downwards, so that the air flow is discharged vertically downwards.
- the blast nozzle assembly may include a pivotable frame which is pivotable about the aforementioned axis of rotation.
- the axis of rotation preferably extends through a frame edge, while the blowing nozzles are mounted on the opposite edge of the frame.
- the blast nozzle arrangement has a linear travel axis, which runs parallel to the conveying direction, so that the blast nozzles can be moved along the conveying direction.
- a cable drive can be provided to drive the Blasdüsenan eleven.
- the nozzles can thus perform either a pivoting movement or a linear movement.
- the tuyeres perform a combined movement 'consists of a pivoting movement and a superimposed linear motion.
- the invention preferably also provides a control unit which controls the downwardly directed air flow, wherein in particular the flow rate, the mass flow (eg volumetric flow) and / or the flow direction can be controlled.
- a control unit which controls the downwardly directed air flow, wherein in particular the flow rate, the mass flow (eg volumetric flow) and / or the flow direction can be controlled.
- control unit can switch off or at least reduce the flow of air during a painting process. During the paint pauses, the control unit may then turn on or boost the airflow.
- various air flows can be introduced into the paint booth, namely, on the one hand, the air flow from the conventional filter cover and, on the other, the air flow from an additional nozzle arrangement.
- the air flow from the additional nozzle arrangement is hereby preferably controllable and is preferably switched on only during painting breaks.
- the additional nozzle arrangement is preferably branched off from the air supply of the filter cover. This has the consequence that a compressed air delivery from the additional nozzle arrangement leads to a correspondingly reduced compressed air output from the filter blanket. As a result, the total air balance is therefore not changed, that is, the amount of air introduced into the paint booth remains at least approximately the same, whereby unwanted air flows in the spray booth are reduced or completely avoided.
- the invention preferably provides that at least 70% of the total descent air (ie, the downward airflow) between two successive bodies (ie, between the rear of the leading body and the front of the following body) in the paint booth should be introduced. This is useful so that the following body is not contaminated by the remaining coating agent mist ("overspray") of the previous body.
- FIG. 1 shows a simplified perspective view of a painting installation with an additional robot for removing interfering coating agent mist ("overspray”)
- FIG. 2A shows a simplified perspective view of another embodiment of a painting booth according to the invention with a modified handling robot for the removal of the interfering coating agent mist
- FIG. 2B shows a perspective, enlarged view of the modified handling robot
- FIG. 3 shows a simplified perspective view of a further exemplary embodiment of a painting booth according to the invention with a SCARA robot for removing the troublesome coating agent mist
- FIG. 4 shows a simplified perspective view of a painting booth according to the invention, with a conventional application robot applying shaping air. to remove the interfering coating agent at
- FIG. 5 shows a flowchart for clarifying a variant of the operating method according to the invention
- FIGS. 6A-6C show various stages of conveying the motor vehicle body components in the operating method according to FIG. 5;
- FIG. 7 shows a diagram to illustrate the different accelerations during conveying in or out of the paint booth
- FIGS. 8A-8C show various stages of delivery of one
- FIG. 9 is a schematic representation of a Lackierka bine with a filter cover which emits a downward air flow in the spray booth, wherein the air flow is angled in the conveying direction,
- FIG. 10A shows two perspective views of a blowing nozzle arrangement and a hinge with a pivotable frame, wherein FIG
- Blow nozzle assembly in the spray booth gives off an air flow down to remove the overspray, as well
- 11A is a perspective view of a modification of the IIB and blowing nozzle arrangement according to the figures 10A and
- FIG. 1 shows an exemplary embodiment of a painting booth 1 in a painting installation for painting motor vehicle body components 2, wherein the motor vehicle body components 2 are conveyed by a conventional conveyor 3 onto transport frames 4 ("skids") through the painting cabin 1.
- the painting of the motor vehicle body components 2 in the paint booth 1 is carried out by multi-axis application robot, which may be conventional and are not shown for simplicity.
- the paint booth 1 has a conventional filter cover which generates a largely laminar, downwardly directed air flow in the cabin interior of the paint booth 1 in order to press down excess coating agent mist ("overspray") in the cabin space and then to promote by the formed as a grid floor cabin floor in a leaching, wherein the filter cover and the leaching can be formed conventionally and therefore also not shown.
- overspray excess coating agent mist
- the conveying device 3 conveys the motor vehicle body components 2 in stop-and-go operation through the painting cabin 1. This means that the motor vehicle body parts 2 stand still in the coating position shown in the drawing and are thus braked during conveying and accelerated during the removal.
- the acceleration of the motor vehicle body components 2 during removal from the paint booth 1 is problematic in two respects.
- the painting of the motor vehicle body components 2 also generates an excess in the interior thereof. coating agent mist and in particular when inner surfaces of the motor vehicle body components 2 are painted. This coating agent mist in the interior of the motor vehicle body components 2 is shielded from the roof of the motor vehicle body parts 2 from the downwardly directed air flow generated by the filter deck and therefore remains relatively long in the interior of the motor vehicle body components 2. When removing the motor vehicle body parts 2 from the spray booth this coating agent mist then predominantly backwards through the tailgate from the motor vehicle body component 2 in the interior of the spray booth, which can lead to an impairment of the next painting process.
- the relatively abrupt acceleration of the motor vehicle body components 2 when conveying out of the La ckierkabine generates air turbulence in the cabin interior, whereby the excess coating agent mist in the cabin space can last longer.
- a manipulator 5 is additionally provided in this embodiment, which is movable on a travel rail 6 on the cabin ceiling and parallel to the conveyor 3, d. H. in the direction indicated by a double arrow X direction.
- the manipulator 5 carries at its lower end a nozzle bar 7, which is aligned horizontally and at right angles to the conveyor 3.
- the nozzle bar 7 has distributed over ih re length numerous air nozzles that emit an air jet 8 to the coating agent fog as possible quickly remove from the cabin interior of the spray booth 1.
- the manipulator 5 in this case allows an increase or decrease of the nozzle bar 7 in the vertical direction, d. H. in the Z direction indicated by a double arrow.
- the air jet 8 thus blows the excess coating agent mist emerging from the tailgate of the conveyed-off motor vehicle body component 2 obliquely forwards and downwards, whereby the removal of the coating agent mist from the cabin interior of the painting booth 1 can be accelerated.
- FIGS. 2A and 2B show a modification of the embodiment according to FIG. 1, so that reference is made to the above description to avoid repetition, the same reference numerals being used for corresponding details.
- a special feature of this exemplary embodiment is that the manipulator 5 for removing the interfering coating agent mist from the interior of the painting booth 1 is a handling robot, the traveling rail 6 being arranged laterally next to the conveying device 3 for moving the manipulator 5 on the cabin floor.
- the manipulator 5 is designed as a multi-axis articulated robot and has a robot base 9, a rotatable robot member 10, a proximal robot arm 11, a distal robot arm 12, a robot hand axis 13 and a handling tool 14.
- the structure of the manipulator 5 is known as a handling robot from the prior art and therefore need not be described in detail.
- the manipulator 5 is modified here by a nozzle bar 15, which is attached to the distal robot arm 12 and extends in the longitudinal direction of the distal robot arm 12.
- the nozzle strip 15 has a plurality of air nozzles 16, which are arranged distributed along the length of the nozzle bar 15 equidistant.
- the individual air nozzles 16 can each emit an air jet 8, which is shown for the purpose of illustration as an arrow.
- the proximal robot arm 12 is aligned with the nozzle rail 15 substantially horizontally and at right angles to the conveyor 3 and is arranged behind the tailgate of the motor vehicle body component 2 to be ejected.
- the individual air nozzles 16 then give the air jet 8 obliquely forwards from the bottom, which from the tailgate of the motor vehicle body component 2 to be ejected is pressed away downwards, which contributes to a quick removal of the coating agent mist from the cabin interior of the paint booth 1.
- the manipulator 5 When removing the motor vehicle body component 2 from the cabin interior of the painting cabin 1, the manipulator 5 is then moved synchronously on the travel rail 6 to the motor vehicle body component 2, which contributes to a good cleaning effect.
- FIG. 3 shows a modification of the embodiment according to Figures 2A and 2B, so reference is made to avoid repetition of the above description, wherein the same reference numerals are used for corresponding details.
- a special feature of this embodiment is that the manipulator 5 is designed as a SCARA robot (SCARA: Selective Compliance Assembly Robot Arm).
- Figure 4 shows a modification of the embodiment according to Figures 2A and 2B, so reference is made to avoid repetition of the above description, wherein the same reference numerals are used for corresponding details.
- a special feature of this exemplary embodiment is that the manipulator 5 for removing the interfering coating agent mist is an application robot which, as the application device, guides a rotary atomizer 17 with a shaping air ring.
- the rotary atomizer 17 then delivers a spray jet of the paint to be applied, the shaping air ring emitting shaping air in order to form the spray jet of the coating agent.
- FIG. 5 shows a flow chart of a variant of the operating method according to the invention, wherein FIGS. 6A to 6C show different stages during the operating method.
- sprays of the coating agent are shown in solid lines, while air jets are drawn as a dotted line to remove the interfering coating agent mist.
- FIG. 6A initially shows an initial state in which the motor vehicle body component 2 is located in the painting cabin 1 and is coated there with varnish by a plurality of rotary atomizers 17-19.
- the rotary atomizers 17-19 are hereby guided in the usual way by multi-axis application robots, wherein the application robots are not shown for the sake of simplicity.
- the motor vehicle body component 2 is in a final coating position in which the motor vehicle body component 2 can be completely coated.
- the next motor vehicle body component 20, which is to be subsequently painted, then already waits in front of the painting booth 1.
- step Sl then the motor vehicle body component 2 is discharged from the paint booth 1 until the Motor vehicle body component 2 is located in the conveying direction behind the painting booth 1, as shown in Figure 6B.
- a step S2 the next motor vehicle body component 20 is then conveyed into the paint booth 1.
- the vehicle body component 20 is initially not conveyed to the final coating position in the center of the paint booth 1, but only to a pre-position, which is shown in Figure 6B.
- the other two rotary atomizers 18, 19 then apply no paint, but only compressed air via the shaping air nozzles in order to remove a disturbing coating agent mist 21 from the painting cabin 1 in a step S4.
- the motor vehicle body component 20 is then conveyed in a step S5 from the preposition according to FIG. 6B to the final painting position according to FIG. 6C.
- FIG. 7 shows a diagram to illustrate the acceleration of the motor vehicle body components 2 from the painting booth.
- the motor vehicle body component 2 is first accelerated along an acceleration ramp 25 with an acceleration a1 and then along a line .
- delay ramp 26 delayed with a delay a2.
- the acceleration a1 on the acceleration ramp 25 is substantially less than the deceleration a2 on the deceleration ramp.
- the relatively small acceleration a1 is advantageous, because then less air turbulence occurs during the delivery of the motor vehicle body component 2 out of the paint booth 1, so that the interfering coating agent mist then settles or is removed faster.
- FIGS. 8A-8C show various stages in conveying the motor vehicle body component 2 out of the painting cabin 1, wherein a cleaning area 27 is shown in dashed lines.
- the cleaning area 27 is the area inside the painting cabin 1 in which the air flow according to the invention leads to a rapid removal of the interfering coating agent mist.
- the cleaning area 27 is moved in synchronism with the discharged motor vehicle body component 2 when the motor vehicle body component 2 is being removed from the painting cabin 1. This is advantageous because when conveying the motor vehicle body component 2 out of the painting booth 1, the disturbing coating agent mist just behind the motor vehicle body component 2 is particularly intense, since there the coating agent mist can escape from the rear window of the motor vehicle body component 2.
- FIG. 9 shows a modification of a painting booth 1 according to the invention, which partially corresponds to the exemplary embodiments described above, so that reference is made to the above description to avoid repetition, the same reference numerals being used for corresponding details.
- a filter cover 28 is shown, which may be largely conventional and emits a downward air flow in the paint booth 1 to push the disturbing coating agent mist ("overspray") down.
- the filter cover 28 in this case has a nozzle element 29, which is arranged with respect to the conveying direction in the rear part of the painting booth 1 and the air flow obliquely forwards downwards.
- the exiting from the nozzle member 29 air flow is therefore not exactly aligned vertically downwards, but inclined in the conveying direction, for example at an angle of 45 ° to the vertical.
- the disturbing coating agent mist (“overspray”) is thus not only pressed down, but also blown away from the inlet of the spray booth 1. This prevents the next motor vehicle body component 2 from being contaminated by the disturbing coating agent mist ("overspray”) of the preceding motor vehicle body component 2.
- a blowing column 30 is arranged at the inlet end of the painting booth 1, which emits an air flow in the conveying direction in the paint booth.
- the interfering coating agent mist (overspray) is likewise blown away from the inlet of the painting cabin 1 in order to avoid contamination of the next motor vehicle body component 2.
- the blowing column .30 has several air nozzles at different heights. As the height of the air nozzles increases, the air nozzles are more angled downwards and thus emit an airflow which is directed more downwards. Thus, the lowermost air nozzle of the blowing column 30 is aligned almost exactly horizontally, while the upper air nozzles are more inclined downwards. This tendency of the upper air nozzles optimizes the removal of the interfering coating agent mist.
- FIGS 10A and 10B show various states of movement of a blast nozzle assembly 31 according to the present invention which can be used in a paint booth to deliver a downward flow of air from top to bottom into the paint booth to blow down the annoying coating overspray
- the blast nozzle arrangement 31 has a pivotable frame 32, which is pivotable about an axis of rotation 33, wherein the axis of rotation 33 extends through a frame edge of the frame 32.
- a slit-shaped nozzle 34 is attached, which emits the downward air flow. This is ensured by a lever construction that the tuyere 34 is always oriented independently of the movement position of the frame 32 down.
- the drive of the pivoting movement of the frame 32 takes place here by a cable drive, the cable drive has four traction cables 35-38 and four rollers 39-42.
- the air flow emitted by the tuyere 34 forces the overspray in the paint booth down through the grid floor of the paint booth, as has already been described in detail above.
- FIGS. IIA and IIB show a modification of the blowing nozzle arrangement 31 according to FIGS. 10A, 10B.
- This modification according to FIGS. IIA, IIB corresponds largely to the tuyere arrangement 31 according to FIGS. 10A, 10B, so that reference is made to the above description to avoid repetition, the same reference numerals being used for corresponding details.
- a special feature of this embodiment is that the tuyere 34 is not pivotable, but linearly displaceable and parallel to the conveying direction, wherein the direction of displacement of the tuyere 34 is indicated in the drawings by a double arrow. Again, the movement drive of the nozzle 34 is effected by a cable drive 43rd
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Spray Control Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16723939T PL3297766T3 (en) | 2015-05-22 | 2016-05-20 | Coating unit and its working process |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015006666.8A DE102015006666A1 (en) | 2015-05-22 | 2015-05-22 | Coating system and associated operating method |
DE102015009855 | 2015-08-04 | ||
PCT/EP2016/000845 WO2016188626A2 (en) | 2015-05-22 | 2016-05-20 | Coating system and associated operating method |
Publications (2)
Publication Number | Publication Date |
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EP3297766A2 true EP3297766A2 (en) | 2018-03-28 |
EP3297766B1 EP3297766B1 (en) | 2020-05-06 |
Family
ID=56026790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16723939.1A Active EP3297766B1 (en) | 2015-05-22 | 2016-05-20 | Coating unit and its working process |
Country Status (8)
Country | Link |
---|---|
US (2) | US10478847B2 (en) |
EP (1) | EP3297766B1 (en) |
CN (1) | CN108025325B (en) |
ES (1) | ES2797986T3 (en) |
HU (1) | HUE050529T2 (en) |
MX (1) | MX2017014737A (en) |
PL (1) | PL3297766T3 (en) |
WO (1) | WO2016188626A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110369211B (en) * | 2019-07-24 | 2021-05-04 | 新昌县寅聚科技有限公司 | Rust-resistant painting device of motor rotor core |
KR20220130089A (en) * | 2019-09-30 | 2022-09-26 | 듀르 시스템스 아게 | Processing systems and processing methods |
CN112474145A (en) * | 2020-11-24 | 2021-03-12 | 无锡市晟然智能装备有限公司 | Electrostatic powder spraying room |
CN114570542A (en) * | 2020-12-01 | 2022-06-03 | 惠州市坚信泰五金制品有限公司 | Electrostatic spraying device for long-strip steel |
FR3117910B1 (en) * | 2020-12-18 | 2023-04-07 | Exel Ind | Electrostatic powder coating robot, system and method |
IT202100000809A1 (en) * | 2021-01-18 | 2022-07-18 | Bywell S R L | PAINTING BOOTH |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2160639B (en) * | 1984-04-12 | 1988-05-25 | Taikisha Kk | Ventilating paint spraying booths |
US4726388A (en) * | 1984-07-13 | 1988-02-23 | Swinehart Lonn L | Automatic vehicle washing equipment |
DE3727283A1 (en) * | 1987-08-12 | 1989-02-23 | Mannesmann Ag | CHOPPER CIRCUIT FOR CONTROLLING ELECTROMAGNETIC AND / OR STEPPING MOTOR COILS, ESPECIALLY FOR A MATRIX PRINTER |
US4898116A (en) * | 1987-09-14 | 1990-02-06 | Onoda Cement Company, Ltd. | Powder coating booth |
CA2059284A1 (en) * | 1989-06-16 | 1990-12-17 | Joachim Pingel | Cabin for spray coating objects with powdered coating material |
US5095811A (en) * | 1990-10-09 | 1992-03-17 | Nordson Corporation | Automotive powder coating booth with modulated air flow |
US5178679A (en) * | 1991-05-20 | 1993-01-12 | Abb Flakt, Inc. | Paint spray booth with longitudinal air flow |
FR2724583B1 (en) * | 1994-09-16 | 1996-12-20 | Sames Sa | CABIN FOR COVERING OBJECTS BY SPRAYING POWDERY MATERIAL AND METHOD FOR CLEANING SUCH A CABIN |
DE59507048D1 (en) * | 1995-02-15 | 1999-11-18 | Wagner International Ag Altsta | Cleaning device for a powder coating booth |
WO2002060595A1 (en) * | 2001-01-31 | 2002-08-08 | Nordson Corporation | Powder spray gun mount and cleaning arrangements |
DE10115376B4 (en) * | 2001-03-28 | 2006-03-16 | EISENMANN Fördertechnik GmbH & Co. KG | Plant for powder coating of objects |
DE10209489B4 (en) | 2002-03-05 | 2010-06-02 | Eisenmann Anlagenbau Gmbh & Co. Kg | Cabin for coating objects with powder |
DE20305947U1 (en) * | 2003-04-11 | 2003-06-18 | Wagner Ag Altstaetten J | Device for cleaning a powder coating booth and powder coating booth with cleaning device |
DE10319916A1 (en) * | 2003-05-05 | 2004-11-25 | Itw Gema Ag | Spraying device for coating material, in particular coating powder |
DE102007048248A1 (en) | 2007-10-08 | 2009-05-14 | Dürr Systems GmbH | Robot with a cleaning device and associated operating method |
DE102008022885A1 (en) * | 2008-05-08 | 2009-11-12 | Range + Heine Gmbh | Device for coating work piece, has movable drip tray provided for overspray, where movement of drip tray is synchronized with movement of coating object by control unit |
DE102008053178A1 (en) | 2008-10-24 | 2010-05-12 | Dürr Systems GmbH | Coating device and associated coating method |
US20130034660A1 (en) * | 2011-08-03 | 2013-02-07 | Kabushiki Kaisha Yaskawa Denki | Painting system and opening/closing hand of door opening/closing robot |
DE102011122056A1 (en) | 2011-12-22 | 2013-06-27 | Eisenmann Ag | Equipment for coating objects |
FR2995227B1 (en) * | 2012-09-10 | 2014-10-03 | Sames Technologies | PROJECTION INSTALLATION OF COATING PRODUCT |
-
2016
- 2016-05-20 EP EP16723939.1A patent/EP3297766B1/en active Active
- 2016-05-20 CN CN201680041330.2A patent/CN108025325B/en active Active
- 2016-05-20 MX MX2017014737A patent/MX2017014737A/en unknown
- 2016-05-20 ES ES16723939T patent/ES2797986T3/en active Active
- 2016-05-20 HU HUE16723939A patent/HUE050529T2/en unknown
- 2016-05-20 PL PL16723939T patent/PL3297766T3/en unknown
- 2016-05-20 US US15/575,915 patent/US10478847B2/en active Active
- 2016-05-20 WO PCT/EP2016/000845 patent/WO2016188626A2/en active Application Filing
-
2019
- 2019-10-24 US US16/662,372 patent/US11511313B2/en active Active
Also Published As
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WO2016188626A2 (en) | 2016-12-01 |
CN108025325A (en) | 2018-05-11 |
US20200122180A1 (en) | 2020-04-23 |
US11511313B2 (en) | 2022-11-29 |
US20180147591A1 (en) | 2018-05-31 |
HUE050529T2 (en) | 2020-12-28 |
WO2016188626A3 (en) | 2017-01-19 |
CN108025325B (en) | 2021-03-30 |
MX2017014737A (en) | 2018-03-23 |
ES2797986T3 (en) | 2020-12-04 |
PL3297766T3 (en) | 2020-11-02 |
US10478847B2 (en) | 2019-11-19 |
EP3297766B1 (en) | 2020-05-06 |
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