WO2007012884A1 - Appareil de maintien d'un rouleau - Google Patents
Appareil de maintien d'un rouleau Download PDFInfo
- Publication number
- WO2007012884A1 WO2007012884A1 PCT/GB2006/002854 GB2006002854W WO2007012884A1 WO 2007012884 A1 WO2007012884 A1 WO 2007012884A1 GB 2006002854 W GB2006002854 W GB 2006002854W WO 2007012884 A1 WO2007012884 A1 WO 2007012884A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hollow shaft
- axle
- chamber
- fluid
- roller
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 48
- 238000004140 cleaning Methods 0.000 claims abstract description 25
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 238000005755 formation reaction Methods 0.000 claims abstract description 11
- 230000010355 oscillation Effects 0.000 claims description 7
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000011109 contamination Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 36
- 230000001070 adhesive effect Effects 0.000 description 36
- 239000011236 particulate material Substances 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0028—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by adhesive surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/50—Cleaning by methods involving the use of tools involving cleaning of the cleaning members
Definitions
- the present invention relates to apparatus for holding a roller of a surface cleaning assembly and particularly, but not exclusively, to apparatus for holding an adhesive roller that oscillates axially with respect to a corresponding cleaning roller in order to prevent the circumferential accumulation of adhesive and particulate material at a position thereon corresponding to a lateral edge of the cleaning roller.
- Such apparatus operates by providing a cleaning roller with a surface of relatively low tackiness that contacts an adhesive roller of relatively high tackiness, the respective rollers being arranged parallel to one another and contacting each other over at least part of their length.
- a web or sheet material hereinafter referred to as a work piece
- particulate material is removed, in order that the cleaning roller remains effective over a period of time, the removed particulate material is transferred to, and retained by, the adhesive roller during rotation of the respective rollers.
- the work piece to be cleaned is conveyed through the nip of at least two opposed cleaning rollers which simultaneously remove particulate material from its opposing surfaces.
- a feature of surface cleaning apparatus of the type described above is that periodic removal of the cleaning and adhesive rollers is necessary.
- the adhesive rollers need to be removed in order to remove saturated exterior layers and expose underlying fresh areas of adhesive.
- a particular problem with adhesive rollers is that adhesive and particulate material can accumulate in a linear fashion around its circumference thus necessitating its premature replacement.
- Such accumulation of adhesive and particulate material arises because the adhesive roller is longer than the cleaning roller and because each lateral edge of the cleaning roller repetitiously contacts the adhesive roller along the same circumferential line of contact. Accordingly, a portion of adhesive and the particulate material is progressively forced out laterally away from the nip of the respective rollers. The resulting gradual loss of adhesive from those lateral portions of the adhesive roller which contact the cleaning roller results in a reduction of its productive lifetime, and the build up of edge contamination may reduce the overall cleaning efficiency of the apparatus.
- apparatus for holding a roller of a surface cleaning assembly comprising: an axle having an outer surface; and a hollow shaft having an inner core surface and an outer surface adapted to be engageable and rotatable with the core of a roller; the hollow shaft being mountable on said axle and axially moveable thereon; formations being provided on the outer surface of the axle and the inner core surface of the hollow shaft respectively, each adapted to sealingly engage the other of said surfaces; said formations and corresponding surfaces defining first and second volume-variable chambers; wherein the apparatus is adapted such that alternate fluid pressurisation and depressurisation of the first chamber causes the hollow shaft to oscillate axially on the axle, thereby changing the volume ratios of the respective chambers.
- axle and the hollow shaft are substantially cylindrical and the first and second chambers are substantially annular.
- the diameter of the axle is less than the diameter of the inner core of the hollow shaft.
- the formation provided on the outer surface of the axle is circumferential and extends radially towards the inner core surface of the hollow shaft.
- the formation provided on the inner core surface of the hollow shaft is circumferential and extends radially towards the outer surface of the axle.
- the first and second chambers are separated by the formation provided on the outer surface of the axle.
- the first and second chambers are connected by a first fluid communication passage.
- a non-return valve provided in the first fluid communication passage allows selective fluid flow from the first chamber into the second chamber.
- the first fluid communication passage is formed in the wall of the hollow shaft.
- a second fluid communication passage is formed in the axle and connects the first chamber to an external fluid supply.
- the outer surface of the hollow shaft is provided with one or more inflatable lugs adapted to selectively engage and disengage the core of a roller.
- the or each inflatable lug is inflatable by means of an external fluid supply.
- a third fluid communication passage is provided between the second chamber and the or each inflatable lug.
- a non-return valve is provided in the third fluid communication passage allowing fluid to selectively flow from the second chamber into the or each inflatable lug.
- the fluid is air.
- the rate of pressurisation and depressurisation of the first chamber is controllable to provide a desired rate of oscillation of the hollow shaft on the axle.
- the volume of the first chamber is less than that of the second chamber.
- a splined connection is provided between the axle and the hollow shaft.
- the axle and the hollow shaft rotate together about a common axis.
- the rotational and oscillating movement of the hollow shaft is adapted to occur simultaneously.
- Fig. 1 is a cross-sectional side view of the apparatus showing the relative positions of the first and second shafts after pressurisation of the first chamber;
- Fig. 2 is a cross-sectional side view of the apparatus showing the relative positions of the first and second shafts after depressurisation of the first chamber.
- the surface cleaning apparatus of the present invention comprises a hollow shaft 10 provided with inflatable lugs 12 on its outer surface. When inflated, the lugs 12 engage the core of an adhesive roller such that the hollow shaft 10 and the adhesive roller rotate together.
- the lugs 12 may be inflated by an external fluid supply (not shown) which connects to an inflation valve 13 on the hollow shaft 10.
- the fluid may be any suitable gas, such as air, or any suitable iiquid.
- the hollow shaft 10 is mounted on an axle 14 by means of a splined connection 16.
- the splined connection 16 allows relative axial movement of the shaft 10 and axle 14 whilst preventing their relative rotation.
- the axle 14 is provided with an enlarged diameter portion 18 which sealingly engages the inner core surface of the hollow shaft 10 around its entire inner circumference during the axial movement.
- the hollow shaft 10 is provided with an annular flange 20 which extends inwardly from its inner core and sealingly engages the outer surface of the axle 14 around its entire outer circumference during the axial movement.
- first and second volume variable chambers A, B first and second volume variable chambers A, B.
- the initial volume of chamber A (as shown in Fig. 1 ) is approximately 50% of that of chamber B.
- the respective chambers A, B are annular in shape and connected by a first fluid communication passage 22 formed in the wall of the hollow shaft 10.
- the first fluid communication passage 22 has a non-return valve 24 (check valve) which permits fluid flow into the second chamber B.
- the chambers A, B are separated within the hollow shaft 10 by the enlarged diameter portion 18.
- the first chamber A is connected to an external fluid supply (not shown) by means of a second fluid communication passage 26.
- a third fluid communication passage 28 is provided in the wall of the hollow shaft 10 between the second chamber B and the inflatable lugs 12 in order to provide a secondary or alternative means of inflating the lugs 12.
- the third fluid communication passage 28 has a non-return valve 30 (check valve) which permits the fluid into the inflatable lugs 12.
- the hollow shaft 10 is inserted into the core of an adhesive roller (not shown).
- the inner diameter of the adhesive roller is greater than the outer diameter of the hollow shaft 10.
- the lugs 12 are inflated with the fluid such that they increase the diameter of the hollow shaft 10 and frictionally engage the core of the adhesive roller to allow the hollow shaft 10 and the adhesive roller to rotate together.
- Inflation of the lugs 12 may be carried out manually by connecting an external fluid supply to the inflation valve 13. A secondary or alternative means of inflation is discussed further below. Removal of the adhesive roller is facilitated by deflation of the lugs 12 until they disengage from the inner surface of the core of the roller.
- pressurised fluid from the external source (not shown) is introduced into the first chamber A through the second fluid communication passage 26.
- the pressurised fluid passes through the first fluid communication passage 22 and the non-return valve 24 into the second chamber B which has approximately twice the initial volume of the first chamber A.
- first chamber A Subsequent pressurisation of the first chamber A causes the volume of the first chamber A to increases and the volume of the second chamber B to decrease as the pressure-volume ratios of the respective chambers A, B attempt to equalise in accordance with Boyle's Law.
- the increasing volume of the first chamber A causes the hollow shaft 10, and therefore the adhesive roller, to move axially to the left (as illustrated in Fig. 1) whilst both the hollow shaft 10 and the axle 14 simultaneously rotate about the longitudinal axis of the axle 14.
- the pressurised air is evacuated from the first chamber A by allowing it to equalise with atmospheric pressure. Loss of air from the second chamber B is prevented by means of the non-return valve 24 in the first fluid communication passage 22. Accordingly, the volume of the second chamber B expands in accordance with Boyle's Law.
- the increasing volume of the second chamber B causes the hollow shaft 10, and therefore the adhesive roller, to move axially to the right (as illustrated in Fig. 2) whilst both the hollow shaft 10 and the axle 14 simultaneously rotate about the longitudinal axis of the axle 14.
- the simultaneous oscillation and rotation of an adhesive roller will prevent localised linear accumulation of adhesive and debris around its circumference. This is because the lateral edges of the cleaning roller do not continuously contact the adhesive roller along the same circumferential line of contact. Instead, the point of contact of the lateral edges of the cleaning roller on the adhesive roller is continually changing during oscillation of the adhesive roller.
- the effective lifetime of the adhesive roller is prolonged because the adhesive on the surface of the roller is spread over a larger area.
- the rate of the axial oscillations may be controlled by controlling the timing, rate and extent of pressurising and depressurising the first chamber A.
- the apparatus can be adapted such that the pressure-volume ratios of the respective chambers A, B do reach an equilibrium state whereby the hollow shaft 10 ceases to move in the axial direction at the end of each axial movement to the left or right.
- the apparatus can be adapted such as to prevent any pausing of the axial movement between the axial movements to the left and right.
- a further feature of the present invention allows the second chamber B to provide a secondary or alternative means of inflating the lugs 12.
- the lugs may be inflated by means of the inflation valve 13.
- the non-return valve 30 will open to allow fluid to flow through the third communication passage 28 and into the lugs 12 to compensate for any loss of pressure. Consequently, the resulting loss of pressure within the second chamber B will result in the non-return valve 24 opening to allow a replenishing flow of fluid from the first chamber A.
- a further advantage of the present invention is that, if the apparatus is left idle for an extended period of time with the result that the fluid pressure in chamber B and/or in the lugs has been lost, the supply of fluid into chamber A will inflate chamber B and the lugs 12 automatically before oscillation commences.
- the hollow shaft 10 would disengage from the core of the adhesive roller and the surface cleaning apparatus would cease to operate. Accordingly, if the leak is of a significant magnitude, the hollow shaft 10 will stop oscillating which will prevent the problem from escalating and warn the operator of a problem.
- the invention therefore provides a mechanically simple solution to edge contamination at low cost. Modifications and improvements may be made without departing from the scope of the present invention.
- the invention may be adapted to oscillate the cleaning roller instead of, or in combination with, the adhesive roller.
- Mechanical limit stops may be employed to limit the range of axial movement of the hollow shaft 10.
- programmable positional and/or pressure sensors may be employed to control the timing of the pressurising and depressurising of the first chamber A.
Landscapes
- Rolls And Other Rotary Bodies (AREA)
Abstract
L'invention se rapporte à un appareil permettant de maintenir un rouleau d'un ensemble de nettoyage de surface du type utilisé pour décontaminer une pièce à travailler. Cet appareil comporte un arbre creux (10) présentant une surface externe conçue pour s'accoupler à un rouleau et faire tourner ce dernier. Cet arbre creux (10) peut être monté sur un axe (14) (qui est fixé axialement) et peut se déplacer axialement sur cet axe. Des formes (18, 20) définies sur la surface externe de l'axe (14) et sur la surface interne principale de l'arbre creux (10) définissent respectivement une première et une seconde chambre à volume variable (A, B). Pour faire fonctionner l'appareil, on provoque alternativement une mise sous pression et un relâchement de la première chambre (A) au moyen d'un fluide pour provoquer l'oscillation axiale de l'arbre creux (10) sur l'axe (14) à mesure que les rapports pression-volume des chambres respectives (A, B) tentent de s'équilibrer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0515479.4 | 2005-07-28 | ||
GBGB0515479.4A GB0515479D0 (en) | 2005-07-28 | 2005-07-28 | Surface cleaning apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007012884A1 true WO2007012884A1 (fr) | 2007-02-01 |
Family
ID=34976738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2006/002854 WO2007012884A1 (fr) | 2005-07-28 | 2006-07-28 | Appareil de maintien d'un rouleau |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0515479D0 (fr) |
WO (1) | WO2007012884A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2008727A1 (fr) | 2007-06-27 | 2008-12-31 | Teknek Holdings Limited | Ensemble d'alimentation de fluide pour dispositif monté sur un arbre |
US9198890B2 (en) | 2011-10-13 | 2015-12-01 | Boston Heart Diagnostics Corporation | Compositions and methods for treating and preventing coronary heart disease |
US9696276B2 (en) | 2008-09-27 | 2017-07-04 | Boston Heart Diagnostics Corporation | Methods for separation and immuno-detection of biomolecules, and apparatus related thereto |
US9817001B2 (en) | 2008-05-27 | 2017-11-14 | Boston Heart Diagnostics Corporation | Methods for determining LDL cholesterol treatment |
US9828624B2 (en) | 2013-07-24 | 2017-11-28 | Boston Heart Diagnostics Corporation | Driving patient compliance with therapy |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3822081A (en) * | 1973-03-08 | 1974-07-02 | Morgan Construction Co | Axial roll adjustment means |
US5611281A (en) * | 1995-05-08 | 1997-03-18 | Serater Llc | System for cleaning particles from a surface |
US6196128B1 (en) * | 1999-04-20 | 2001-03-06 | Frank C. Corrado | Traversing contact cleaning roller cleaner |
WO2001075319A1 (fr) * | 2000-04-01 | 2001-10-11 | Teknek Electronics Limited | Arbre |
-
2005
- 2005-07-28 GB GBGB0515479.4A patent/GB0515479D0/en not_active Ceased
-
2006
- 2006-07-28 WO PCT/GB2006/002854 patent/WO2007012884A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3822081A (en) * | 1973-03-08 | 1974-07-02 | Morgan Construction Co | Axial roll adjustment means |
US5611281A (en) * | 1995-05-08 | 1997-03-18 | Serater Llc | System for cleaning particles from a surface |
US6196128B1 (en) * | 1999-04-20 | 2001-03-06 | Frank C. Corrado | Traversing contact cleaning roller cleaner |
WO2001075319A1 (fr) * | 2000-04-01 | 2001-10-11 | Teknek Electronics Limited | Arbre |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2008727A1 (fr) | 2007-06-27 | 2008-12-31 | Teknek Holdings Limited | Ensemble d'alimentation de fluide pour dispositif monté sur un arbre |
US8157715B2 (en) | 2007-06-27 | 2012-04-17 | Itw Cs (Uk) Limited | Fluid supply assembly for a shaft mounted device |
US9817001B2 (en) | 2008-05-27 | 2017-11-14 | Boston Heart Diagnostics Corporation | Methods for determining LDL cholesterol treatment |
US9696276B2 (en) | 2008-09-27 | 2017-07-04 | Boston Heart Diagnostics Corporation | Methods for separation and immuno-detection of biomolecules, and apparatus related thereto |
US9198890B2 (en) | 2011-10-13 | 2015-12-01 | Boston Heart Diagnostics Corporation | Compositions and methods for treating and preventing coronary heart disease |
US9828624B2 (en) | 2013-07-24 | 2017-11-28 | Boston Heart Diagnostics Corporation | Driving patient compliance with therapy |
Also Published As
Publication number | Publication date |
---|---|
GB0515479D0 (en) | 2005-08-31 |
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