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WO1996031318A1 - Procede et appareil de texturation de surfaces, et produits ainsi obtenus - Google Patents

Procede et appareil de texturation de surfaces, et produits ainsi obtenus Download PDF

Info

Publication number
WO1996031318A1
WO1996031318A1 PCT/IE1996/000021 IE9600021W WO9631318A1 WO 1996031318 A1 WO1996031318 A1 WO 1996031318A1 IE 9600021 W IE9600021 W IE 9600021W WO 9631318 A1 WO9631318 A1 WO 9631318A1
Authority
WO
WIPO (PCT)
Prior art keywords
article
conditioning
particulate material
gas
blasting
Prior art date
Application number
PCT/IE1996/000021
Other languages
English (en)
Inventor
William Rankin
Original Assignee
Faircove Systems
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 Faircove Systems filed Critical Faircove Systems
Priority to AU52870/96A priority Critical patent/AU5287096A/en
Publication of WO1996031318A1 publication Critical patent/WO1996031318A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/006—Treatment of used abrasive material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
    • B24C3/20—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by turntables
    • B24C3/22—Apparatus using nozzles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to the texturing of articles and more particularly to the conditioning and retexturing of articles for reuse. Specifically, the invention relates to the reconditioning of aluminium magnetic rollers used for transferring toner to an optical photoconductor (OPC) in a laser printer, photocopier or the like.
  • OPC optical photoconductor
  • Magnetic rollers comprise a sleeve having a print surface and mounting ends, a permanent magnet disposed within the sleeve and at least one electrical contact.
  • the print surface of the sleeve and the mounting ends which are held in bushings are prone to wear and are easily damaged during handling or cleaning with adverse effects on final print quality.
  • OEMs original equipment manufacturers
  • the present invention provides a method for conditioning an elongate cylindrical metal article for reuse, said method comprising:
  • the article is treated with a sealant to seal pores on the textured surface and to prevent corrosion or oxidation.
  • the article is mounted vertically so that the particulate material does not settle on the textured surface and become subsequently embedded into said surface.
  • the particulate material is of comparable hardness to the article so that cleaning and texturing is efficiently effected.
  • the particulate material is similar to the constituent material of the metal article, for example, the particulate material may be the oxide of that metal.
  • the particle to be subjected to the method of the invention is usually a magnetic roller sleeve of substantially pure aluminium.
  • aluminium oxide (AI2O3) is used as the particulate material for air blasting.
  • Other particulate mixtures are also suitable, for example, a mixture containing 12% Si ⁇ 2, 1.5% i ⁇ 2 together with the balance comprising AI2O3.
  • the dehumidified gas is air.
  • the sealant used on the article comprises a xylol, ethyl acetate, methanol, ethanol, hexone and aliphalic naphtha mixture.
  • the article comprises a sleeve having mounting ends and the method comprises a preparation phase which includes polishing the ends and covering the ends with caps to protect the ends from subsequent blasting.
  • the mounting ends are polished to remove scratches and wear marks so that wear is prevented on the magnetic roller bushings which are usually Mylar* or Nylon*.
  • the present invention further provides an apparatus for conditioning an elongate cylindrical metal article for reuse, the apparatus comprising:
  • an enclosed cabinet having a rotatable mounting means for holding an article and rotating the article about its longitudinal axis;
  • At least one blasting pistol for blasting the article with particulate material
  • a wash vent array for washing the article in a stream of dehumidified gas to remove settled particulate material
  • a gas circuit having a vacuum pump for extracting particulate material laden gas from the cabinet; a cyclone for separating the particulate material from the gas; and a refrigeration unit for cooling and dehumidifying the gas for recirculation, the recirculated gas being supplied to the or each blasting pistol and to the wash vent array in the cabinet to wash the article.
  • the or each blasting pistol is provided with a nozzle of a hard material, preferably boron carbide, and is mounted on a platform which is movable parallel to the axis of rotation of the article.
  • the present invention yet further provides a reconditioned sleeve for use with a magnetic roller, said sleeve having a randomly textured toner transfer surface, said surface comprising an area subjected to pressurised particulate blasting.
  • the gas may be an inert gas or more conveniently may be air.
  • air may be understood to include other gases .
  • Figure 1 is a block diagram of the apparatus
  • Figure 2 is a perspective view of the overall apparatus.
  • FIG. 3 is a detailed perspective view of the blasting arrangement.
  • the apparatus comprises a blast cabinet 1 which houses a pair of blast pistols 3 mounted on a rack 5.
  • a motor driven target turntable 7 is centrally disposed in the cabinet 1 in front of an air wash vent array 9.
  • Each blast pistol 3 is supplied by an air line 10 and a 96/31318 PCME96/00021
  • the print surface and mounting caps must first be inspected for excessive wear or damage. Dents or deep defects will render the roller useless.
  • the caps are ground and soft polished to remove scratches, burrs, wear marks and grooves before the roller print surface is retextured. The polishing is achieved using a soft SCOTCHBRIT* polishing wheel revolving at approximately 1400 rpm.
  • Protective rubber caps C are then placed over the newly ground caps and the roller R is placed in the blasting cabinet 1.
  • the roller is held vertically by the clamp 14 which grips one of the rubber caps C.
  • the clamp 14 and roller R are then rotated by the motor driven turntable 7 at approximately 180 rpm.
  • the blast pistols 3 are moved to their uppermost position on the rack 5 by a motor drive arrangement 27 and cool dry air from the refrigeration plant is circulated to the pistols 3. Aluminium oxide particles or particle mixtures having aluminium oxide as their main constituent are introduced
  • the rack 5 lowers the blast pistols 3 along the length of the target roller R as it rotates to effect total retexturing.
  • the air wash vent array 9 provides a constant stream of cool dry air to remove particle and other debris from the roller R to prevent unwanted embedding of particles in the retextured surface.
  • the retextured surface is then optionally coated in a sealant comprising a xylol, ethyl acetate, methanol, ethanol, hexone and aliphalic naphtha mixture (manufactured by Federal Mining and Manufacturing Company, USA) to seal pores in the surface and to prevent corrosion or oxidation.
  • the used air, particle and debris mixture is drawn out of the cabinet (under negative pressure) through the tube 15 into the cyclone separator 17.
  • the now warm, and often damp, air is circulated through the pump 19 into the dehumidifier 23 and chiller 25 of the refrigeration unit for reuse.
  • the aluminium oxide particles and debris are separated and any aluminium oxide particles which have been broken into yet smaller particles are disposed of along with the debris.
  • Useful particles are routed to the particle collector 21 for recirculation to the blast pistols 3.
  • Standard rollers R comprise a print surface of very pure (99.9%) aluminium and to avoid contamination the blast particles comprise an aluminium oxide mixture comprising 1.5% Ti0 , 12% Si0 2 and 86.5% Al 2 0 3 of average 180 mesh particle size.
  • the particles comprise a fused aluminium oxide mixture comprising: AI2O3 96.16%, Ti0 2 2.58%, Si0 2 0.49%, MgO 0.30%, Fe 2 0 3 0.20%, CaO 0.14%, a2 ⁇ 0.07% and K2O 0.06%, in which the average particle size is 220 mesh.
  • These blast particles are suitable for retexturing as they are sufficiently hard to remove scratches and old material and to retexture the surface but soft enough not to cause excessive damage. A softer material would clean the rollers but would fail to retexture them.
  • the nozzles 29 for the blast pistols 3 comprise a carbide material preferably, tungsten carbide or boron carbide for longevity.
  • the nozzles 29 have a 9.5mm bore and each carry an air volume of 0.594m ⁇ /min (21 cubic feet/min) at a pressure of 5.17 bars (75 p.s.i.).
  • the full cycle takes 40 seconds and includes a 3 second air wash.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

Procédé de conditionnement d'un produit métallique cylindrique allongé (R) en vue de sa réutilisation, consistant à monter le produit (R) de manière qu'il puisse tourner autour de son axe longitudinal, à faire tourner le produit et à pulvériser en direction de celui-ci des matières particulaires de dureté comparable, puis à laver le produit dans un flux de gaz sec, par exemple de gaz inerte ou d'air, afin d'éliminer les matières particulaires déposées. L'appareil de conditionnement dudit produit comprend une enceinte fermée (1) possédant un plateau rotatif (7) destiné à maintenir et à faire tourner le produit autour de son axe longitudinal, des pistolets de pulvérisation (3) pulvérisant des matières particulaires sur le produit, une rampe de buses de lavage (9) assurant le lavage du produit dans un flux de gaz sec, une unité (17, 21) de récupération des matières particulaires en vue de leur réutilisation, et un circuit à gaz. Ce circuit à gaz comporte une pompe à vide (19) servant à extraire de l'enceinte (1) le gaz chargé de matières particulaires, un séparateur cyclone (17) servant à extraire les matières particulaires du gaz, et une unité frigorifique (23, 25) servant à refroidir et à sécher le gaz en vue de son recyclage au niveau des pistolets (3) et de la rampe de buses de lavage (9) assurant le lavage du produit. L'article texturé à réutiliser comporte une gaine utilisable en association avec un rouleau magnétique, ladite gaine étant pourvue d'une surface de transfert de toner à texture formée de manière aléatoire.
PCT/IE1996/000021 1995-04-07 1996-04-10 Procede et appareil de texturation de surfaces, et produits ainsi obtenus WO1996031318A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52870/96A AU5287096A (en) 1995-04-07 1996-04-10 A method and apparatus for texturing surfaces, and articles produced thereby

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IES950253 1995-04-07
IE950253 IES70127B2 (en) 1995-04-07 1995-04-07 A method and apparatus for texturing surfaces and articles produced thereby

Publications (1)

Publication Number Publication Date
WO1996031318A1 true WO1996031318A1 (fr) 1996-10-10

Family

ID=11040712

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IE1996/000021 WO1996031318A1 (fr) 1995-04-07 1996-04-10 Procede et appareil de texturation de surfaces, et produits ainsi obtenus

Country Status (3)

Country Link
AU (1) AU5287096A (fr)
IE (1) IES70127B2 (fr)
WO (1) WO1996031318A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5795908A (en) * 1995-06-07 1998-08-18 Gpi Nil Holdings, Inc. Small molecule inhibitors of rotamase enzyme activity
US5798355A (en) * 1995-06-07 1998-08-25 Gpi Nil Holdings, Inc. Inhibitors of rotamase enzyme activity
US5846979A (en) * 1997-02-28 1998-12-08 Gpi Nil Holdings, Inc. N-oxides of heterocyclic esters, amides, thioesters, and ketones
EP0935958A1 (fr) * 1998-02-17 1999-08-18 SCA Lohnherstellungs AG Cylindre de formage et méthode d'usinage des cylindres de formage
US6946584B1 (en) 1999-05-28 2005-09-20 Sca Hygiene Products Ab Absorbent article with improved liquid-handling ability
CN106985080A (zh) * 2017-04-10 2017-07-28 南京信息工程大学 吸入式双缸喷砂机
CN111331520A (zh) * 2020-02-19 2020-06-26 江苏大学 一种喷砂-激光复合清洗设备及其清洗方法
CN115283935A (zh) * 2022-06-28 2022-11-04 东风汽车集团股份有限公司 一种模具表层纹理修复方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2590819A (en) * 1949-07-08 1952-03-25 Pangborn Corp Roll blasting equipment
GB1010949A (en) * 1961-07-07 1965-11-24 Ajem Lab Inc Apparatus for surface treating articles
DE2641120A1 (de) * 1975-09-22 1977-03-31 Keramik Wtb Veb Verfahren und vorrichtung zum flaechenpartiellen polieren von dekorbelagschichten auf keramischen geschirrteilen
DE3609408A1 (de) * 1986-03-20 1987-09-24 Georg Norbert Fassel Verfahren zur regenerierung von kraftfahrzeugfelgen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2590819A (en) * 1949-07-08 1952-03-25 Pangborn Corp Roll blasting equipment
GB1010949A (en) * 1961-07-07 1965-11-24 Ajem Lab Inc Apparatus for surface treating articles
DE2641120A1 (de) * 1975-09-22 1977-03-31 Keramik Wtb Veb Verfahren und vorrichtung zum flaechenpartiellen polieren von dekorbelagschichten auf keramischen geschirrteilen
DE3609408A1 (de) * 1986-03-20 1987-09-24 Georg Norbert Fassel Verfahren zur regenerierung von kraftfahrzeugfelgen

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6140357A (en) * 1995-06-07 2000-10-31 Gpi Nil Holdings, Inc. Small molecule inhibitors of rotamase enzyme activity
US5798355A (en) * 1995-06-07 1998-08-25 Gpi Nil Holdings, Inc. Inhibitors of rotamase enzyme activity
US5795908A (en) * 1995-06-07 1998-08-18 Gpi Nil Holdings, Inc. Small molecule inhibitors of rotamase enzyme activity
US5859031A (en) * 1995-06-07 1999-01-12 Gpi Nil Holdings, Inc. Small molecule inhibitors of rotamase enzyme activity
US6486151B2 (en) 1997-02-28 2002-11-26 Gpi Nil Holdings Inc. N-oxides of heterocyclic esters, amides, thioesters, and ketones
US5846979A (en) * 1997-02-28 1998-12-08 Gpi Nil Holdings, Inc. N-oxides of heterocyclic esters, amides, thioesters, and ketones
EP0935958A1 (fr) * 1998-02-17 1999-08-18 SCA Lohnherstellungs AG Cylindre de formage et méthode d'usinage des cylindres de formage
US6591585B2 (en) * 1998-02-17 2003-07-15 Swiss Caps Ag Forming roller and a method for processing forming rollers
US6946584B1 (en) 1999-05-28 2005-09-20 Sca Hygiene Products Ab Absorbent article with improved liquid-handling ability
CN106985080A (zh) * 2017-04-10 2017-07-28 南京信息工程大学 吸入式双缸喷砂机
CN111331520A (zh) * 2020-02-19 2020-06-26 江苏大学 一种喷砂-激光复合清洗设备及其清洗方法
CN111331520B (zh) * 2020-02-19 2021-06-22 江苏大学 一种喷砂-激光复合清洗设备及其清洗方法
CN115283935A (zh) * 2022-06-28 2022-11-04 东风汽车集团股份有限公司 一种模具表层纹理修复方法
CN115283935B (zh) * 2022-06-28 2023-04-25 东风汽车集团股份有限公司 一种模具表层纹理修复方法

Also Published As

Publication number Publication date
IES950253A2 (en) 1996-10-16
AU5287096A (en) 1996-10-23
IES70127B2 (en) 1996-10-30

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