EP3235399A1 - Procédé et dispositif d'application sélective de vernis protecteur - Google Patents

Procédé et dispositif d'application sélective de vernis protecteur Download PDF

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Publication number
EP3235399A1
EP3235399A1 EP17155627.7A EP17155627A EP3235399A1 EP 3235399 A1 EP3235399 A1 EP 3235399A1 EP 17155627 A EP17155627 A EP 17155627A EP 3235399 A1 EP3235399 A1 EP 3235399A1
Authority
EP
European Patent Office
Prior art keywords
brush
component
relative movement
relative
application
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
Application number
EP17155627.7A
Other languages
German (de)
English (en)
Other versions
EP3235399B1 (fr
Inventor
Christian Falk
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.)
Bolta Werke GmbH
Original Assignee
Bolta Werke GmbH
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 Bolta Werke GmbH filed Critical Bolta Werke GmbH
Publication of EP3235399A1 publication Critical patent/EP3235399A1/fr
Application granted granted Critical
Publication of EP3235399B1 publication Critical patent/EP3235399B1/fr
Active legal-status Critical Current
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
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/06—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length by rubbing contact, e.g. by brushes, by pads
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/06—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water connected to supply pipe or to other external supply 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/02—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
    • B05C1/027—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1603—Process or apparatus coating on selected surface areas
    • C23C18/1605—Process or apparatus coating on selected surface areas by masking
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02—Electroplating of selected surface areas
    • C25D5/022—Electroplating of selected surface areas using masking means
    • 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
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • 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
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists

Definitions

  • the invention relates to a method according to the preamble of claim 1, preferably galvanic, metallizing, in particular chromium plating, one, in particular three-dimensional component, in particular a plastic molded part, preferably a plastic injection molded part, wherein on the component a Abdecklack is applied and then the component is metallized.
  • the invention relates to a system according to claim 9, comprising a metallization device and a device for selectively applying a Abdecklacks on a job area of a, preferably galvanically, to be metallized, in particular three-dimensional component.
  • the system is preferably designed and configured for carrying out the method according to the invention.
  • Plastic parts in particular injection-molded plastic parts, usually made of ABS (acrylonitrile-butadiene-styrene copolymer) or ABS-PC plastics are provided with a mostly multi-layer galvanic metallization for a variety of applications, especially for the automotive industry, ie electrochemically coated. In most cases, an upper electroplating metal layer is formed by a chromium layer. For many applications, it is necessary to exclude certain areas of the plastic part of the metallization, ie not to metallize these areas.
  • the present invention seeks to provide an alternative, process-safe method for selectively applying a Abdecklack Mrs to a later in a process step, in particular electrochemically metallized component.
  • the object is to provide a system for process-reliable selective application of Abdecklack in the run-up to, in particular electrochemical metallization of a component, which is preferably suitable and intended for carrying out the method according to the invention.
  • a device for selectively applying a Abdecklacks on a job surface of a preferably made of plastic component comprising a brush for applying the Abdecklacks on the application surface of the component, a Abdecklackmakerss ein for supplying the brush during application with Abdecklack from a Abdecklackvorrats employer and automatic, signal-conducting associated with control means relative movement means for generating a relative movement between the brush and the application surface of the component.
  • the invention leads to a method for, preferably galvanic (electrochemical) metallizing, in particular chrome plating of a component, in particular a plastic component, wherein the, in particular electrochemical, even more preferably at least one, preferably uppermost, chromium layer comprehensive, metallization or the metallization process in the following explained, inventive Abdecklack (2004)ungs vide is preceded.
  • the invention is based on the idea that selective, ie not full-surface, application of the Abdecklackes on the component for preventing the subsequent metallization of the covered by the Abdecklack Partial area (application surface) and / or one of the Abdecklack, ie provided with Abdecklack application area surrounding recess not (manually) but automatically perform, using a brush, according to the invention automatic, ie by means of at least one, in particular electrical (pneumatic or hydraulic ) Actuator driven relative movement means are provided by means of which during the Abdecklack Huaweis on the component by means of the brush between the brush and the component automatically generates a relative movement, thus in order standing in contact with the component brush the application surface, ie to be provided with the Abdecklack Depart partial surface of the surface of the component.
  • the method according to the invention and the device according to the invention enable the automated, process-reliable application of resist to three-dimensional components or surfaces extending along three mutually perpendicular spatial axes of a Cartesian space coordinate system.
  • the relative movement means must only be designed so that they allow a relative movement along all three spatial axes.
  • the relative movement means With regard to the specific embodiment of the relative movement means or the concrete execution of the relative movement, there are three different embodiments.
  • a first embodiment of the relative movement of both the brush and the component respectively (simultaneously or successively) actively adjusted during the application process which in particular very complex component geometries comparatively easy with Abdecklack, especially along a predetermined application track or line, in particular circumferentially closed possible is.
  • the third alternative - is the third alternative - according to which the component is arranged stationary, in particular held in a workpiece carrier, while the brush is actively adjusted relative to the fixed component, in particular along a predetermined and / or predeterminable (parameterizable by the user) relative movement path.
  • the movement means comprise a robot arm, in particular about at least one joint, preferably pivotable about a plurality of joints, which carries the brush.
  • the robot arm is configured as a collapsing robot arm, which makes it possible to work without shut-off and / or other security measures an employee, in particular for equipping a workpiece carrier immediately adjacent to the robot arm, especially in the working area or range allow.
  • the variant with active relative to a fixed Component, in particular by means of a robot arm adjustable brush also has the advantage that arranged around the robot arm around several components in each workpiece carrier and this edited one after the other by the robot arm or covering lacquer can be applied to this, so either automated or by an employee already finished or coated with resist coated selectively coated or painted components can be exchanged against still be provided with Abdecklack components.
  • the relative movement means in particular the robot arm, are designed and controlled such that they execute the relative movement such that the brush moves along a predetermined position relative to the component (by actively adjusting the brush and / or the component) and / or predetermined trajectory is guided and remains in contact with the component.
  • the trajectory coordinates or the course can either be fixed or what is preferred is predeterminable, i. E. be variable, in particular be parametrizable, most preferably via a corresponding input mask or via a corresponding control file, which is created for example on the basis of CAD data of the component or is.
  • An embodiment variant of the method is very particularly preferred in which the covering lacquer volume flow supplied to the brush is varied or variable during application, in particular in order to adapt the application behavior or the order to a relative speed between the brush and the component, in particular to a brush movement speed / or to a component geometry.
  • the control and / or regulation of the covering volume flow preferably takes place in such a way that the layer thickness and / or an application track width during the covering paint application; especially the Lackspur, despite changing relative speed and / or order surface changed.
  • the cover volume flow is controlled such that a layer thickness specification and / or application track width is maintained, in particular such that a layer thickness and / or application track width remains constant.
  • the relative movement of the brush takes place in a direction of relative movement, that is such that a longitudinal axis of the brush with a relative direction of movement, in which the brush relative to the component, in particular by actively adjusting the brush by means of relative movement is moved is inclined or with the relative direction of movement (motion vector) an angle of less than 90 °, in particular between 70 ° and 88 °, more preferably between 75 ° and 88 °, very particularly preferably between 80 ° and 85 °.
  • the direction of relative movement changes during the resist application, wherein the brush inclination, i.
  • the angle between the brush longitudinal axis, along which extend the bristles of the brush and the relative direction of movement is tracked to comply with the aforementioned inclination angle to the relative direction of movement. It is preferred if the longitudinal axis of the brush is oriented perpendicular to an axis which is arranged at right angles in the contact region of the brush to the component, ie on the component surface relative to the direction of relative movement.
  • the invention also leads to a system which is preferably designed and intended for carrying out a method previously described in detail.
  • the system comprises a metallization device for, in particular, galvanizing, metallizing a, preferably three-dimensional, component, in particular a plastic injection-molded part, and a device for applying resist to the component prior to metallization.
  • the device comprises a brush for applying the Abdecklacks on the application surface and a Abdecklackmakerss ein with which the brush during application with Abdecklack from a Abdecklackvorrats employer is supplied.
  • the device according to the invention comprises automatic, i. with at least one drive driven, signal conductively connected to control means relative movement means for generating a relative movement between the brush and the application surface of the component.
  • the brush is moved relative to a stationary component, in particular along a predetermined and / or predeterminable trajectory for generating a defined application trace.
  • a stationary component in particular along a predetermined and / or predeterminable trajectory for generating a defined application trace.
  • a, in particular collaborating robotic arm it is possible and preferred to use a, in particular collaborating robotic arm.
  • a plurality of workpiece holders are arranged around the relative movement means, which are approached in particular successively by the robot arm or the brush for generating a respective Abdecklackcess.
  • volumenstromeinstellstoff are controllable, with which the cover volume supplied to the brush during the job can be varied, in particular depending on a known relative to the control means relative speed between the brush and the component and / or a component geometry.
  • the volumetric flow setting means comprise a proportional valve, in particular in the covering varnish supply line, wherein the opening cross section is varied as a function of at least one parameter, for example the relative speed between the brush and the component or the component geometry for adjusting the volumetric flow.
  • the covering lacquer pressure applied to the proportional valve is constant, or kept within predetermined limits, at least within predetermined limits, which is possible, for example, by a feed pump or can preferably be realized by virtue of the reservoir for covering lacquer being preferably constant or only in predetermined ranges fluctuating conveying gas pressure, in particular air pressure is supplied.
  • a feed pump instead of previously explained static pressure promotion, it is possible to control the feed pump for adjusting the flow rate.
  • Luerlokitati is fixed to a holder.
  • this holder is formed by the relative movement means, in particular a robot arm.
  • the replacement can be done for cleaning and / or replacement purposes of the brush. It is also possible in this way to use brushes with different geometries for different applications with the same relative displacement movement means.
  • the brush is, as mentioned above, a multi-bristle arrangement.
  • the brush comprising a plurality of bristles comprises bristles of different length and / or thickness and / or of different materials.
  • an outlet opening connected to the supply line for cover lacquer, with respect to a front end of the brush (contact end to the component), in particular a brush tip, is set back.
  • the outlet opening is located in an area within the bristles, in particular in a bristle center and / or behind the bristles and opens, for example, in a arranged behind the bristles distribution space for Abdecklack.
  • the relative movement of the brush or the brush incline track accordingly so that the inclination angle equal or at least the preferred angle range remains, at least smaller than 90 °, so as to realize a continuous pulling movement of the brush.
  • the relative movement of the brush and / or of the component are adjusted or adjusted along three mutually perpendicular spatial axes of a 3D-coordinate coordinate system.
  • the Relativverstellierismittel are designed such that not only the aforementioned inclination angle, ie the angle between the longitudinal central axis of the brush and the relative direction of movement in the desired angular range, in particular is kept at the desired angular extent, but also an angle between the longitudinal axis, in particular the longitudinal central axis of the brush and a direction of movement in the contact region of the brush to the component striking axis, in particular surface axis.
  • the relative movement means track the angle of inclination of the brush or of its longitudinal axis or adapt to the changing direction of relative movement.
  • this can be realized or programmed by moving the movement means, in particular a robot arm, along a predetermined trajectory along the component in a so-called teach mode and setting a respective inclination angle of the brush at a plurality of points to be stored is specified manually.
  • a controlled tracking is also conceivable, it being necessary for this purpose to determine the respective angular position of the brush, for example via sensor means, such as a camera.
  • the device suction means for sucking off from the paint order resulting emissions, in particular solvent vapors with which the corresponding emissions are sucked or sucked in operation in order to increase the safety of work for operators.
  • Fig. 1 is a device 1 for the selective application of Abdecklack on, in particular electrochemically, to be metallized components, in particular made of plastic, such as ABS, ABS-PC, PA 6.6, PEI, or LCP shown.
  • the device 1 comprises relative movement means 2 in the form of a collapsing robot arm, which carries a brush 3 at the end, as it does for example in FIG Fig. 4 shown in detail.
  • the robot arm is automatically adjustable by a plurality of pivot joints by means of corresponding drives, so as to descend by software prescribable trajectories by means of the brush under contact of the brush to the component.
  • the components can be processed one after the other or provided with covering paint and then replaced manually or automatically.
  • the relative movement means 2 are assigned control means 5 in order to carry out the relative movement as specified and, as will be explained later, to vary a covering paint volume flow during the application.
  • the brush 3 is supplied with covering paint via a covering lacquer supply line 6, which is connected to the cover lacquer reservoir 7 in the manner of a cover lacquer.
  • a controllable via the control means 5, designed as a proportional valve metering valve 8 is provided.
  • Reference numeral 9 denotes an exhaust air duct for discharging any solvent vapors of the resist.
  • Fig. 2 is a part of the device according to Fig. 1 shown.
  • an attachment 10 for fixing on the robot arm At the top 10 of the brush 3 is held, which is supplied via the cover lacquer reservoir 7 shown in sections continuously with Abdecklack.
  • the metering valve 8 In the article 10 is also the metering valve 8, which may alternatively be arranged in the region of a connection element 11, which can be fixed via terminals 12 to an arm portion of the robot arm of Relativverstellstoff 2.
  • Fig. 3 shows the Abdecklackvorrats employer 7, which is connected via the Abdecklackmakerss effet 6 lacquer-conducting with the brush 3.
  • the Abdecklackvorrats concerninger 7 is supplied via a compressed gas line, in particular a compressed air line manometer controlled with a substantially constant delivery pressure.
  • a gas pressure delivery and a feed pump for example, be used with a screw conveyor to produce a discharge pressure.
  • Such a feed pump can be combined with a metering valve designed as described and / or itself for varying the volume flow, for example, speed-controlled, stroke-controlled, etc. are controlled.
  • Fig. 4 shows a possible embodiment of a trained according to the concept of the invention brush 3.
  • This comprises a plurality of elongated bristles 13 which are fixed in a holding portion 14.
  • an outlet opening 15 for Abdecklack is supplied via a part of the supply line forming supply channel 16 with Abdecklack.
  • the outlet opening 15 is arranged recessed relative to a front end 18 of the bristles 13 and the brush 3, respectively.
  • the brush 3 comprises on the side facing away from the bristles 13 fixing means 17, here in the form of a Luerlokan gleiches for releasably fixing to the Relativverstellstoffn second
  • Fig. 5 a situation is shown in the operation of the device according to the invention.
  • the brush 3 with a longitudinal axis L (here by way of example the longitudinal central axis).
  • This is not exactly perpendicular to a cover 19 to be acted upon component 20 (which is then metallized later in the process, in particular galvanized) - rather, the longitudinal axis L of the brush 3 is inclined to a relative direction of movement R, in which the brush 3, here pulling, along the component surface or the component 20 of Relativverstellierisffenn adjusted or pulled.
  • This relative displacement movement direction changes during the application process in which the brush 3 is moved along a movement path.
  • the angle ⁇ between the longitudinal axis L and the relative direction of movement R is tracked or held during the Abdecklack (2004)s in a range of values in the embodiment shown 80 to 85 °.
  • an angle ⁇ is preferably maintained between an axis A (surface axis) oriented perpendicular to the direction of relative movement R in the contact area of the brush 3.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP17155627.7A 2016-04-11 2017-02-10 Procédé et dispositif d'application sélective de vernis protecteur Active EP3235399B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016106584 2016-04-11

Publications (2)

Publication Number Publication Date
EP3235399A1 true EP3235399A1 (fr) 2017-10-25
EP3235399B1 EP3235399B1 (fr) 2020-07-01

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EP17155627.7A Active EP3235399B1 (fr) 2016-04-11 2017-02-10 Procédé et dispositif d'application sélective de vernis protecteur

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EP (1) EP3235399B1 (fr)
DE (1) DE202017100723U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808547A (zh) * 2019-11-15 2021-05-18 众鼎瑞展电子科技(深圳)有限公司 一种笔式涂布方法
CN114345615A (zh) * 2021-12-01 2022-04-15 陈霞 一种组合烟花加工用组盆刷胶装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438799A1 (de) * 1994-10-18 1996-04-25 Atotech Deutschland Gmbh Verfahren zum Beschichten elektrisch nichtleitender Oberflächen mit Metallstrukturen
EP1302564A2 (fr) * 2001-10-10 2003-04-16 Thorsten Koras Procédé de revêtement partiel d'une surface métallique
WO2015041831A1 (fr) * 2013-09-20 2015-03-26 Nabors Industries, Inc. Appareil d'enrobage de tuyaux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438799A1 (de) * 1994-10-18 1996-04-25 Atotech Deutschland Gmbh Verfahren zum Beschichten elektrisch nichtleitender Oberflächen mit Metallstrukturen
EP1302564A2 (fr) * 2001-10-10 2003-04-16 Thorsten Koras Procédé de revêtement partiel d'une surface métallique
WO2015041831A1 (fr) * 2013-09-20 2015-03-26 Nabors Industries, Inc. Appareil d'enrobage de tuyaux

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808547A (zh) * 2019-11-15 2021-05-18 众鼎瑞展电子科技(深圳)有限公司 一种笔式涂布方法
CN114345615A (zh) * 2021-12-01 2022-04-15 陈霞 一种组合烟花加工用组盆刷胶装置
CN114345615B (zh) * 2021-12-01 2023-03-10 浏阳市兴旺出口烟花制造有限公司 一种组合烟花加工用组盆刷胶装置

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Publication number Publication date
EP3235399B1 (fr) 2020-07-01
DE202017100723U1 (de) 2017-03-30

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