DE2908522A1 - Cylindrical electrostatic coating machine - moves profile through hollow metering unit which applies coating material uniformly to long part - Google Patents

Cylindrical electrostatic coating machine - moves profile through hollow metering unit which applies coating material uniformly to long part

Info

Publication number
DE2908522A1
DE2908522A1 DE19792908522 DE2908522A DE2908522A1 DE 2908522 A1 DE2908522 A1 DE 2908522A1 DE 19792908522 DE19792908522 DE 19792908522 DE 2908522 A DE2908522 A DE 2908522A DE 2908522 A1 DE2908522 A1 DE 2908522A1
Authority
DE
Germany
Prior art keywords
cylinder
coated
flock
screen
hollow
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.)
Ceased
Application number
DE19792908522
Other languages
German (de)
Inventor
Klaus Dipl Ing Gabler
Frank Hohensee
Helmut Prof Dr Ing Potente
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.)
Vereinigung zur Foerderung des Instituts fuer Kunststoffverarbeitung in Industrie und Handwerk an Der Rhein
Original Assignee
Vereinigung zur Foerderung des Instituts fuer Kunststoffverarbeitung in Industrie und Handwerk an Der Rhein
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 Vereinigung zur Foerderung des Instituts fuer Kunststoffverarbeitung in Industrie und Handwerk an Der Rhein filed Critical Vereinigung zur Foerderung des Instituts fuer Kunststoffverarbeitung in Industrie und Handwerk an Der Rhein
Priority to DE19792908522 priority Critical patent/DE2908522A1/en
Publication of DE2908522A1 publication Critical patent/DE2908522A1/en
Ceased legal-status Critical Current

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
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/14—Plant for applying liquids or other fluent materials to objects specially adapted for coating continuously moving elongated bodies, e.g. wires, strips, pipes
    • 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
    • B05C19/001—Flocking
    • B05C19/002—Electrostatic flocking
    • 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
    • B05D1/007—Processes for applying liquids or other fluent materials using an electrostatic field
    • 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
    • B05D1/16—Flocking otherwise than by spraying
    • 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
    • B05D2256/00—Wires or fibres
    • 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
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The coating machine has the long part (profile) moving axially through a hollow metering unit that applies coating material (powder) uniformly onto all sides of the part. The hollow unit has a hole having the same shape as the cross-section of the part being coated. A voltage is applied between the unit and the part (the part being at ground potential). The unit may be cylindrical. The part moves axially through the cylinder. The cylinder contains the coating material. The part can be coated on all sides without having to be rotated.

Description

Verfahren und Vorrichtung zum elektrostatischen BeschichtenMethod and device for electrostatic coating

(Beflocken, vulverbeschichten) von Oberflächen langgestreckter Teile Die Erfindung betrifft ein Verfahren zum elektrostatischen Beschichten (Beflocken, Pulverbeschichten) von Oberflächen langgestreckter Teile und eine Einrichtung zur Durchführung dieses Verfahrens.(Flocking, vulver coating) of surfaces of elongated parts The invention relates to a method for electrostatic coating (flocking, Powder coating) of surfaces of elongated parts and a device for Implementation of this procedure.

Beim Beschichten derartiger Teile, insbesondere beim Beflocken, muß eine gleichmäßige Flordichte erzielt werden. Die Fasern sollen dabei möglichst senkrecht auf der Substratoberfläche verankert werden. Es ist bekannt, daß bei jeder nichtflächigen Beflockung das Beflockungsergebnis durch den veränderten Verlauf der elektrischen Kraftlinien, d.h. durch Feldinhomogenitäten, beeinträchtigt wird (Handbuch zum 5. Internationalen Flockenseminar, S. 135 - 157; Herausgeber: Lehrinstitut der Holzwirtschaft und Kunststofftechnik, Rosenheim). Es sind daher bei der Gestaltung zu beflockender Teile oder Profile Richtlinien hinsichtlich der möglichen Oberflächenkrümmungen einzuhalten (VDI-Bildungswerk BW 2243; Zeitschrift Flock 2 (1978) Nr. 4, S. 9 -12). Es werden demzufolge Flock-Dosierungen, wie sie auch bei der Beflockung von Bahnen üblich sind, eingesetzt, wobei die Feldgeometrie durch Zusatzelektroden beeinflußt wird. (Zeitschrift Adhesives Age (1975) Nr. 9, S. 23 - 28). Bei der Beflockung runder Teile (z.B. Walzen) müssen jedoch diese Teile gedreht werden, um eine gleichmäßige Rundum-Beflockung zu erreichen.When coating such parts, especially when flocking, must a uniform pile density can be achieved. The fibers should be as vertical as possible be anchored on the substrate surface. It is known that with every non-surface Flocking the flocking result through the changed course of the electrical Lines of force, i.e. by field inhomogeneities, is impaired (Handbuch zum 5. International Flake Seminar, pp. 135-157; Publisher: Institute of the Wood Industry and plastics technology, Rosenheim). It is therefore to be flocked in the design Parts or Profiles Guidelines for possible surface curvatures must be complied with (VDI-Bildungswerk BW 2243; Flock 2 magazine (1978) No. 4, pp. 9-12). As a result, flock dosages are used, as is the case with the flocking of webs are common, used, the field geometry influenced by additional electrodes will. (Adhesives Age Journal (1975) No. 9, pp. 23-28). Rounder when flocking Parts (e.g. rollers), however, these parts must be rotated in order to be even To achieve all-round flocking.

Der Erfindung liegt nun die Aufgabe zugrunde, eine gleichmäßige Beschichtung, insbesondere einen gleichmäßigen Flockflor, auf gekrümmte oder profilierte Oberflächen aufzubringen und dabei ohne Drehen des zu beflockenden Profils oder Teiles eine Rundum-Beflockung zu erzielen.The invention is now based on the object of providing a uniform coating, in particular a uniform flock pile curved or profiled To apply surfaces and without turning the profile to be flocked or To achieve an all-round flocking of the part.

Diese Aufgabe ist erfindungsgemäß durch das in dem Patentanspruch 1 gekennzeichnete Verfahren gelöst. Zur Durchführung dieses Verfahrens dienen die in den Patentansprüchen 2 bis 6 gekennzeichneten Vorrichtungen.This object is according to the invention by what is stated in the claim 1 marked procedure solved. The in the claims 2 to 6 characterized devices.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß ein Drehen der zu beflockenden Profile nicht mehr erforderlich ist. Es wird hiermit möglich, z. B. bei der Beflokkung von Schläuchen die Beflockungszone in die Extrusionsstraße zu integrieren, d.h. es kann kontinuierlich gefertigt werden.The advantages that can be achieved with the invention are, in particular, that a turning of the profiles to be flocked is no longer necessary. It will hereby possible, z. B. in the flocking of hoses, the flocking zone in to integrate the extrusion line, i.e. it can be manufactured continuously.

Bei der Beflockung von Teilen ermöglicht die Erfindung einen gleichmäßigen Flockflor. Durch die besondere Gestaltung der Dosierelektrode als Siebkörper, insbesondere als Siebzylinder, erübrigt sich der Einsatz von Zusatzelektroden.When flocking parts, the invention enables a uniform Flocked pile. Due to the special design of the metering electrode as a screen body, in particular as a sieve cylinder, the use of additional electrodes is unnecessary.

Ausführungsbeispiele der Erfindung sind in Fig. 1 bis 4 gezeigt.Embodiments of the invention are shown in FIGS.

Fig. 1 zeigt einen Dosierzylinder 1 in Verbindung mit einer rotierenden Bürstvorrichtung 2. Der Flock 3 befindet sich im Vorratsbehälter 4 und wird im elektrischen Feld zwischen dem Dosierzylinder 1 und dem Profil 5 beschleunigt. Fig. 2 zeigt die Einbringung des Flocks 3 durch Rotation oder Vibration des Siebzylinders 6. Das Profil 7 wird durch eine entsprechende öffnung des Vorratsbehälters 8 geführt. Behälter 8 und Siebzylinder 6 sind elektrisch isoliert. Fig. 3 zeigt einen Vorratsbehälter 9, in den Luft 12 eingeblasen werden kann, die den Flock 3 in das elektrische Feld zwischen den Siebzylinder 10 und das Profil 11 bringt. Fig. 4 zeigt ein Ausführungsbeispiel für ein unregelmäßig geformtes Profil 11. Die zugeführte Luft 12 sichert die gleiche Funktionsweise wie die der Anordnung in Fig. 3.Fig. 1 shows a dosing cylinder 1 in connection with a rotating one Brush device 2. The flock 3 is located in the storage container 4 and is in the electrical Field between the dosing cylinder 1 and the profile 5 accelerated. Fig. 2 shows the Introduction of the flock 3 by rotation or vibration of the screen cylinder 6. The Profile 7 is passed through a corresponding opening in the storage container 8. container 8 and screen cylinder 6 are electrically isolated. Fig. 3 shows a storage container 9, can be blown into the air 12, which the flock 3 in the electrical field brings between the screen cylinder 10 and the profile 11. Fig. 4 shows an embodiment for an irregularly shaped profile 11. The supplied air 12 ensures the same Function like that of the arrangement in FIG. 3.

Als Abmaße können in Fig. 3 beispielsweise gewählt werden: d3 = 15 mm; D31 = 100 mm; D32 = 200 mm. Für einen Flock von 3,3 dtex und 1,0 mm Länge beträgt die Maschenweite des Siebzylinders ca. 2,0 mm. Wird in Fig. 1 das gleiche Profil beflockt, so ist d1 = d3; D11 = D31. Das Behältnis 4 muß so groß sein, daß die Bürstvorrichtung in der gezeigten Weise mit Flock umgeben ist. Die Länge L hängt von der gewünschten Durchlaufgeschwindigkeit des Profils ab, ebenso die Drehzahl n des Bürstsystems. Es -1 können beispielsweise gewählt werden: L = 30 cm; n = 5 min Die angelegte elektrische Feldstärke kann 1 bis 8 KV/cm betragen, entsprechend den sonst beim elektrostatischen Beschichten üblichen Werten.For example, the following dimensions can be selected in FIG. 3: d3 = 15 mm; D31 = 100 mm; D32 = 200 mm. For a flock of 3.3 dtex and 1.0 mm in length the mesh size of the screen cylinder approx. 2.0 mm. Is the same profile in Fig. 1 flocked, then d1 = d3; D11 = D31. The container 4 must be so large that the brushing device is surrounded with flock in the manner shown. The length L depends on the one you want Throughput speed of the profile, as well as the speed n of the brush system. For example, -1 can be selected: L = 30 cm; n = 5 min The applied electrical Field strength can be 1 to 8 KV / cm, corresponding to that otherwise with electrostatic Coating usual values.

Claims (6)

Patentansprüche 1. Verfahren zum elektrostatischen Beschichten (Beflocken, Pulverbeschichten) von Oberflächen langgestreckter Teile (Profile), dadurch gekennzeichnet, daß das zu beschichtende Teil (Profil) axial durch eine die allseitige gleichmäßige Beschichtung des Teils bewirkende, hohlzylinderartig ausgebildete Dosiereinrichtung geführt wird. Claims 1. Method for electrostatic coating (flocking, Powder coating) of surfaces of elongated parts (profiles), characterized in that that the part to be coated (profile) axially through a uniform on all sides Coating of the part, a hollow cylinder-like metering device to be led. 2. Vorrichtung zur Durchführung des Verfahrens nach Patentanspruch 1, dadurch gekennzeichnet, daß ein als Dosierelektrode wirlcender, an Spannung liegender, der Form der zu beschichtenden Profiloberfläche angepaßter Hohlkörper, der siebartig durchlocht ist (Siebkörper), vorgesehen ist, in dessen Bereich das zu beschichtende, geerdete Teil gleichmäßig auf seinem Umfang elektrostatisch beschichtet wird (Fig. 1 - 4).2. Device for performing the method according to claim 1, characterized in that a voltage acting as a metering electrode, the shape of the profile surface to be coated adapted hollow body, the sieve-like is perforated (screen body), is provided, in the area of which the to be coated, grounded part is electrostatically coated evenly on its circumference (Fig. 1 - 4). 3. Vorrichtung nach Patentanspruch 2, d a d u r c h g e k e n n z e i c h n e t daß der Hohlkörper als Hohlzylinder (Siebzylinder) ausgebildet ist (Fig. 1 - 3).3. Device according to claim 2, d a d u r c h g e k e n n z e i c h n e t that the hollow body is designed as a hollow cylinder (sieve cylinder) (Figures 1-3). 4. Vorrichtung nach Patentanspruch 3, dadurch gekennzeichnet, daß der Siebzylinder in einem mit Flock gefüllten Vorratsbehälter angeordnet ist und mit einer rotierenden Bürstvorrichtung zur Verteilung des Flocks durch den durchlochten Mantel des Siebzylinders versehen ist (Fig. 1).4. Device according to claim 3, characterized in that the screen cylinder is arranged in a storage container filled with flock and with a rotating brush device to distribute the flock through the perforated Jacket of the screen cylinder is provided (Fig. 1). 5. Vorrichtung nach Patentanspruch 3, dadurch gekennzeichnet, daß der als Wand des Vorratsbehälters ausgebildete, an Spannung liegende Siebzylinder senkrecht oder geneigt angeordnet und mit einer Vorrichtung zum Drehen bzw. zum Vibrieren des Siebzylinders verbunden ist (Fig. 2).5. Device according to claim 3, characterized in that the strained screen cylinder designed as the wall of the storage container arranged vertically or inclined and with a device for rotating or for Vibrating the screen cylinder is connected (Fig. 2). 6. Vorrichtung nach Patentanspruch 2 oder 3, dadurch gekennzeichnet, daß an den als Wand des Vorratsbehälters für den Flock ausgebildeten, an Spannung liegenden Siebkörper (Siebzylinder) eine Zuführung für Druckluft angeschlossen ist, durch die der Flock in das elektrische Feld zwischen dem Siebkörper (Siebzylinder) und dem zu beschichtenden Teil zu bringen ist (Fig. 3).6. Device according to claim 2 or 3, characterized in that that on the trained as the wall of the storage container for the flock, on tension lying screen body (screen cylinder) a supply for compressed air is connected, through which the flock enters the electrical field between the screen body (screen cylinder) and to be brought to the part to be coated (Fig. 3).
DE19792908522 1979-03-05 1979-03-05 Cylindrical electrostatic coating machine - moves profile through hollow metering unit which applies coating material uniformly to long part Ceased DE2908522A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792908522 DE2908522A1 (en) 1979-03-05 1979-03-05 Cylindrical electrostatic coating machine - moves profile through hollow metering unit which applies coating material uniformly to long part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792908522 DE2908522A1 (en) 1979-03-05 1979-03-05 Cylindrical electrostatic coating machine - moves profile through hollow metering unit which applies coating material uniformly to long part

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DE2908522A1 true DE2908522A1 (en) 1980-09-11

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3330846A1 (en) * 1983-08-19 1985-03-14 Karl-Hermann 4060 Viersen Endepols Hand device for electrostatic flocking of articles
US5169449A (en) * 1990-07-31 1992-12-08 Raught Jerry E Apparatus for applying joint compound to corner beads
DE102008009741A1 (en) 2008-02-18 2009-08-20 Felix Hellmuth Laminar or band-shaped substrate e.g. uniform flock, electrostatic flock-coating method for e.g. industrial application, involves temporarily displacing substrate into high frequency mechanical vibrations during flocking
DE202011106620U1 (en) 2011-09-27 2013-01-03 Roberto Schuster Hand tools, in particular drumsticks
EP3200929A1 (en) * 2014-10-01 2017-08-09 Tamicare Ltd. Apparatus to produce 3d curved flocked articles

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3330846A1 (en) * 1983-08-19 1985-03-14 Karl-Hermann 4060 Viersen Endepols Hand device for electrostatic flocking of articles
US5169449A (en) * 1990-07-31 1992-12-08 Raught Jerry E Apparatus for applying joint compound to corner beads
DE102008009741A1 (en) 2008-02-18 2009-08-20 Felix Hellmuth Laminar or band-shaped substrate e.g. uniform flock, electrostatic flock-coating method for e.g. industrial application, involves temporarily displacing substrate into high frequency mechanical vibrations during flocking
DE102008009741B4 (en) * 2008-02-18 2011-07-14 Hellmuth, Felix, 96250 Method and device for the electrostatic flocking of non-flat substrates
DE202011106620U1 (en) 2011-09-27 2013-01-03 Roberto Schuster Hand tools, in particular drumsticks
EP3200929A1 (en) * 2014-10-01 2017-08-09 Tamicare Ltd. Apparatus to produce 3d curved flocked articles

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