EP1161304A1 - Appareil de nettoyage d'un support de montage - Google Patents

Appareil de nettoyage d'un support de montage

Info

Publication number
EP1161304A1
EP1161304A1 EP00912746A EP00912746A EP1161304A1 EP 1161304 A1 EP1161304 A1 EP 1161304A1 EP 00912746 A EP00912746 A EP 00912746A EP 00912746 A EP00912746 A EP 00912746A EP 1161304 A1 EP1161304 A1 EP 1161304A1
Authority
EP
European Patent Office
Prior art keywords
jig
articles
article
surface coating
vibration
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.)
Withdrawn
Application number
EP00912746A
Other languages
German (de)
English (en)
Inventor
Peter John Smith
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.)
Protective Finishing Group Ltd
Original Assignee
Protective Finishing Group Ltd
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 Protective Finishing Group Ltd filed Critical Protective Finishing Group Ltd
Publication of EP1161304A1 publication Critical patent/EP1161304A1/fr
Withdrawn legal-status Critical Current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
    • B05B5/082—Plant for applying liquids or other fluent materials to objects characterised by means for supporting, holding or conveying the objects
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06—Suspending or supporting devices for articles to be coated

Definitions

  • the present invention relates to apparatus for coating articles and primarily, but not exclusively to apparatus for coating metal articles by dipping, spraying, powder coating, and similar processes to coat the surface of an article with a non conductive surface covering to form a protective coating on the article.
  • each of the articles are suspended or otherwise attached to a jig and moved into a treatment chamber in which they are coated.
  • one method of cleaning include heat treatment of the jig to melt the coating which may then be brushed off for example by wire brushes.
  • an apparatus for removing surface coating material from a jig adapted to carry one or more articles said apparatus including vibration means adapted to vibrate the jig and cause relative movement between the jig and the or each article carried thereby such movement causing removal of sufficient surface coating from the jig to enable an electrical connection between the jig and the article.
  • said vibration means may be provided in a part of a coating apparatus adapted to lift and/or convey a jig loaded with articles to be coated towards a treatment bath.
  • said vibrating means is provided on a jig support so that when the jig is supported and having already been loaded with articles to be treated it is vibrated causing relative movement between the articles and the jig which relative movement causes the surface coating on the jig to be removed in the area of contact between the jig and the articles supported thereby.
  • the frequency and the amplitude of vibration may be varied depending on the weight of the articles and the materials from which they are made and the length of time for which they are subject to vibration may also be altered depending on the criteria of removing sufficient surface coating from the jig to enable satisfactory electrical contact between the jig and the articles supported thereby.
  • the above described apparatus for removing surface coating from a jig is a considerable improvement of known jig cleaning techniques particularly, when the vibration means can be incorporated in an automatic conveying apparatus since the hitherto necessary step of removing the jig from the treatment path and subjecting it to prolonged heat treatment, followed by mechanical cleaning can be avoided.
  • the jig may then be reloaded with new untreated articles and the jig and articles supported thereto subjected to vibration in their conveyed path from a loading area a treatment area.
  • the automatic conveying apparatus may be an indexing conveyor arranged such so that there is movement along a conveying path for a period of time followed by a non movement time.
  • the non movement time may be used to subject the jig and articles to vibration.
  • the jig and the articles may be subjected to two vibration treatments possibly, at different amplitudes, different frequency of vibration and for a different frequency of time.
  • the articles may be subjected to vibration whilst they are being moved along the conveying path.
  • a method of removing surface coating for an article supporting jig comprising loading one or more articles to be treated on the jig and subjecting the jig to vibration to cause relative movement between the articles and the jig to abrade or otherwise remove surface coating on the jig in the area of contact between the jig and the or each article supported thereby.
  • FIGURE 1 is view of part of a jig with an article supported thereby.
  • FIGURE la is a further view of a support bar
  • FIGURE 2 is a detailed view showing the area of contact between the jig and the article.
  • FIGURE 3 illustrates a complete jig with articles supported therefrom on a conveying means
  • FIGURE 4 illustrates a vibrating apparatus supporting jig carrying bars.
  • FIGURE 5 is a schematic illustration of a treatment system.
  • Figure 1 illustrates a support rod 10 to which is secured a plurality of hooks such as those shown at 11.
  • the bars 10 may be of considerable length for example at least 1 metre and a large number of hooks 11 will be secured thereto, each of the hooks 11 being adapted to support an article such as the article shown at 12.
  • the article 12 may, for example, be a metal pressing which it is required to coat with paint to provide not only a protective coating to the article 12 but also possibly to improve its appearance.
  • the complete jig is vibrated by a vibrating device, the amplitude and frequency of the vibration being determined, at least in part, by the weight of the article 12 and the material from which it is made. Vibration will cause relative movement of the article 12 in the hook 11 and the edges of the part of the article 12 in contact with the hook 11 will cause abrasion of the surface coating until metal to metal contact is possible.
  • the support bar 10 has a bent end region 10a which locates on a V shaped support 22 which can also been send in Figure 3.
  • the bent portion 10a not only helps to locate the support bar 10 on the jig but also is inclined so that the hooks 11 project forwardly. This helps to maintain the articles 12, particularly when light in weight, from falling off the hooks 11.
  • Figure 2 shows an enlarged view of the hook 11 and the article 12 and the areas 15 on the hook 11 are contacted by the edge areas 16 on the article 12 and after vibration the cleaning of the hook 11 can be seen. It has been found in practice that a vibration time of approximately two to six minutes has been found effective to clean the hooks 11 sufficiently to provide electrical contact between articles 12 and the hooks 11.
  • Figure 3 shows a complete jig 20 which is provided with a plurality of bars 21 secured thereto, the bars having V shaped separating structures 22 and between which bars 21 can be supported the support bar 10. It can be seen from Figure 3 that a large number of support bars 10 may be provided on a single jig thereby enabling a large number of articles 12 to be treated at the same time.
  • the jig 20 is suspended from a pair of carrier bars 25 which have a pair of T bars 27 which can be engaged or disengaged with a carrier member 24 which is moved along a conveyor track 26.
  • the T bar connection 27 and carrier 24 enable the conveyor system to pick up the jig 20 and deposit it at any one of a different number of stations.
  • the vibrating station has a pair of spaced support members 28, one of which is shown, supporting the ends of the two carrier bars 25. It will be appreciated that there will be another support member 28 to support the other ends of the carrier bars 25. It is further envisaged that the carrier bars 25 maybe provided with transverse members and it is possible that the ends of the transverse members can be supported by the support member 28 so that the jig is supported from its sides rather than at each end.
  • the vibrating station will necessarily have a substantial height so that the jig is freely supported from the upper end thereof and a vibrating means 29 having a power lead 30 is shown attached to the support member 28 so that the vibration from the vibrating means 29 is transmitted through the support member 28 carrier bars 25 to the entire jig.
  • rubber insulating blocks 30 support the support member 28 from the base 32.
  • the vibrating means 29 maybe electrically powered as shown in Figure 4 or if the apparatus is situated in an hazardous area it may be pneumatic hydraulic.
  • control means may be provided to alter the frequency of vibration, the amplitude of vibration and furthermore timing means maybe provided so that a set time can be given for vibration to take place to produce the desired removal of surface coating from the hooks 11 without causing wear to the hooks themselves.
  • the eccentricity can be increased or decreased whereby increasing or decreasing the amplitude of vibration, the speed of rotation may be increased or decreased thereby altering the frequency of vibration. It will be appreciated that in order to produce the desired effect, the nature of the articles being and their weight and material may dictate different vibration speeds and amplitude.
  • more than one vibrating station maybe provided and furthermore, in alternative systems the articles maybe vibrated on a jig during movement along the conveying means.
  • the carrier member that supports the carrier bars 25 will be well insulated by rubber mountings for example to prevent the vibration being transmitted to the conveying means 26.
  • the through bore is likely to have relatively sharp edges which contributes significantly to the ability of the relative movement between the article 12 and the hook 11 to cause erosion of the surface material provided on the hook 11 of the jig 20. Vibration of the jig for a pre-determined length of time will be sufficient to ensure that there is adequate electrical connection between each of the articles 12 suspended from the hooks 11 of the jig 20 for a current to pass there through and enable the treatment to be carried out successfully.
  • a first treatment bath is shown at 35 in which the jigs are immersed and is normally provided with a cleaning fluid so that the articles to be plated are de-greased or otherwise cleaned.
  • Further treatment baths are shown at 36 and 37 which may comprise the surface coating treatment and the jigs are then removed by the conveying means 26 having a drying station 38.
  • An unloading and loading station is shown at 39 where the jigs maybe removed from the conveying system so that operatives may unload the articles that have been plated and reload the jigs with articles to be treated.
  • the bars for supporting the articles will have been coated with surface material in the baths 36 and 37 and they are then moved to a vibrating station 40 so that prior to immersion in the treatment baths electrical contact between the articles to be plated and the jig is possible thus the current passing through the jig and through the treatment bar enables the articles to be provided with a surface coating.
  • the apparatus and method of the present invention provides a very considerable improvement of the process as a whole by providing a simple and very efficient manner of cleaning the jigs and also obviously the need for a large number of extra jigs to be made. Furthermore, particularly when the vibration means is activated whilst the jigs are being conveyed from a loading bay, to a surface treatment bath the extra time taken to clean the jig compared with the process as a whole may be negligible.
  • a still further advantage of the present invention is that because the paint or other material does not have to be removed from the remainder of the ig since, the relative vibration between the jig and the articles cleans only the area of contact between the article and the jig.
  • surface coating is applied only to the articles since the jig will already be coated with surface coating, from the area of contact with the article with paint or other surface coating. This results in a considerable saving in the surface coating material.
  • the apparatus shown is merely an example of how the invention can be put into effect and the vibration means may be sited anywhere that is suitable providing it is capable of causing relative movement between the jig and the article supported thereby sufficient to cause removal of part of the surface coating on the jig.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating Apparatus (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un appareil et un procédé pour enlever le revêtement de surface d'un support de montage (11) portant un article, de manière à permettre qu'un contact électrique s'établisse entre ledit support et le/ ou chaque article (12), afin que les articles soient revêtus d'un revêtement de surface dans une chambre de traitement. Le revêtement de surface sur le support de montage est enlevé en soumettant le support et l'article à des vibrations, de telle façon que le mouvement résultant entre les articles et le support use par frottement le revêtement de surface sur le support, ce qui permet d'établir un contact électrique entre le support et les articles.
EP00912746A 1999-03-18 2000-03-17 Appareil de nettoyage d'un support de montage Withdrawn EP1161304A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9906136.8A GB9906136D0 (en) 1999-03-18 1999-03-18 Jig cleaning
GB9906136 1999-03-18
PCT/GB2000/000947 WO2000054889A1 (fr) 1999-03-18 2000-03-17 Appareil de nettoyage d'un support de montage

Publications (1)

Publication Number Publication Date
EP1161304A1 true EP1161304A1 (fr) 2001-12-12

Family

ID=10849809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00912746A Withdrawn EP1161304A1 (fr) 1999-03-18 2000-03-17 Appareil de nettoyage d'un support de montage

Country Status (4)

Country Link
US (1) US20020137442A1 (fr)
EP (1) EP1161304A1 (fr)
GB (2) GB9906136D0 (fr)
WO (1) WO2000054889A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2374304B (en) 2001-04-10 2005-03-16 Protective Finishing Group Ltd A support member, a rack for use in a coating process, a method of removing surface coating material from a support member,
GB2380436B (en) * 2001-10-03 2005-02-23 Protective Finishing Group Ltd A carrier for use in a coating process,a method of making a carrier and support members for use in a coating process and a method of removing surface coating
US20140039693A1 (en) * 2012-08-02 2014-02-06 Honeywell Scanning & Mobility Input/output connector contact cleaning

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE408396B (sv) * 1975-11-12 1979-06-11 Witte Stefan Anordning for ytbehandling
FR2422449A1 (fr) * 1978-04-14 1979-11-09 Air Ind Dispositif de nettoyage de balancelles dans une installation de projection electrostatique de poudre d'email
US4668358A (en) * 1986-05-14 1987-05-26 Motor Wheel Corporation Method and apparatus for use in surface treatment of conveyor supported workholders
US5617800A (en) * 1995-02-24 1997-04-08 Grass America, Inc. System for cleaning fixtures utilized in spray painting
US6261435B1 (en) * 1997-10-21 2001-07-17 Nihon Techno Kabushiki Kaisha Plating method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0054889A1 *

Also Published As

Publication number Publication date
GB2366530B (en) 2003-08-13
GB9906136D0 (en) 1999-05-12
US20020137442A1 (en) 2002-09-26
GB0121756D0 (en) 2001-10-31
WO2000054889A1 (fr) 2000-09-21
GB2366530A (en) 2002-03-13

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