EP3974069A1 - Brosse cylindrique pour une installation centrifuge de grenaillage - Google Patents

Brosse cylindrique pour une installation centrifuge de grenaillage Download PDF

Info

Publication number
EP3974069A1
EP3974069A1 EP21198731.8A EP21198731A EP3974069A1 EP 3974069 A1 EP3974069 A1 EP 3974069A1 EP 21198731 A EP21198731 A EP 21198731A EP 3974069 A1 EP3974069 A1 EP 3974069A1
Authority
EP
European Patent Office
Prior art keywords
brush roller
carrier ring
carrier
recess
projections
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.)
Pending
Application number
EP21198731.8A
Other languages
German (de)
English (en)
Inventor
Karl Heinz Konert
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.)
Wheelabrator Group GmbH
Original Assignee
Wheelabrator Group 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 Wheelabrator Group GmbH filed Critical Wheelabrator Group GmbH
Publication of EP3974069A1 publication Critical patent/EP3974069A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/001—Cylindrical or annular brush bodies
    • A46B13/005—Cylindrical or annular brush bodies made up of a series of longitudinal strips or segments
    • 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
    • B24C9/003—Removing abrasive powder out of the blasting machine

Definitions

  • the invention relates to a brush roller for a centrifugal blasting system with the features of the preamble of claim 1.
  • Such a brush roller is required in particular in a roller conveyor blasting system in which steel sheets, steel profiles or other workpieces are treated in continuous operation.
  • a centrifugal blasting system smooth and profiled surfaces can be automatically deburred, descaled or derusted. After treatment, the blasting agent remains on the workpiece that is guided through the blasting chamber via the roller conveyor and must be removed from it before it leaves the chamber.
  • At least one brush unit is required for this, which is mounted on a driven brush roller.
  • the brush unit is subjected to high loads because the blasting medium is abrasive and because the bristles have to make firm contact with the surface of the workpiece in order to achieve the desired cleaning effect. Accordingly, the bristles of the brush units wear out as the period of use increases, so that regular replacement of the brush units is necessary.
  • it must be taken into account that there is very little space inside the blasting chamber and that another opening in the blasting chamber, e.g. B. by removing panel parts or by removing others units is not possible due to time and cost reasons. The mechanic must therefore crawl into the blasting chamber contaminated with blasting agent, remove the brush units from the brush roller there and then mount new brush units.
  • the brush elements are divided into at least two halves which are screwed to one another and/or to the shaft.
  • the fitter has to loosen the screw connections, which may also be stuck due to the blasting agent that has penetrated.
  • it is then necessary to place the two halves together, including the carrier shaft, and to restore the screw connections. Given the length and weight of a single brush unit, positioning, holding and bolting cannot be done by a single assembler. Despite the already limited space, a second person is usually necessary.
  • a generic brush roller is from DE 102016112195 A1 famous.
  • the brush roller is segmented into two brush units that can be placed on the support shaft from the outer circumference. They are secured by axially shifting the brush strip elements, which are provided with a welt, in receptacles on the carrier shaft, so that a large number of elements have to be shifted axially for each assembly or disassembly.
  • the segments are secured to the support shaft with rods that are pushed on axially. There must be enough space for this on the side next to the brush roller, so that the brush roller may first have to be removed from the system if space is limited
  • the object of the present invention is to facilitate the assembly and disassembly of a brush roller for a centrifugal blasting system even more and this alone by accessing the brush roller from Outer circumference ago, so without a necessary axial displacement of elements to allow.
  • the invention is essentially based on a carrier ring segment that can be elastically deformed in a targeted manner. It can therefore be fixed in a form-fitting manner on the support shaft by being pressed on from the outside, with projections on the inside springing into corresponding recesses or grooves on the casing of the support shaft.
  • the carrier ring segment is bent open again, so that the projections disengage from the recesses or grooves on the carrier shaft.
  • the clear width between the inwardly pointing projections should be approximately 0.90 to 0.95 times the diameter of the carrier shaft at the point at which the projections engage in the recess or receiving groove made there.
  • At least one clamping element can be provided, which acts between the carrier ring segment and the carrier shaft. It can be z. B. be a radially guided through the carrier ring segment screw. The projections of the carrier ring segment are pressed against the edges of the receiving groove via the clamping element.
  • Two identical carrier ring segments are preferably provided, which each extend over 180° and form a closed carrier ring as a pair. If the projections are attached at each end, can adjacent projections of both carrier ring segments engage in a common recess or receiving groove on the carrier shaft.
  • receptacles or receptacle grooves can also be provided for each carrier ring segment on the carrier shaft.
  • one of the carrier ring segments extends over less than 180° and the other over more than 180°. It is also possible that both carrier ring segments cover less than a semicircle. Finally, the carrier ring can also be divided into more than two carrier ring segments.
  • At least one closing ring can be provided on the carrier shaft, which is fastened next to a brush unit, which in each case comprises two carrier ring segments and a multiplicity of brush tire elements connecting them.
  • the brush units form a half-shell, so to speak, so that two brush units complement each other to form a closed, cylindrical brush body, which then comprises a total of at least two pairs of carrier ring segments.
  • the bending up of the carrier ring segments for dismantling is preferably made possible by at least one push-off element in each of the two lateral legs of the semicircular carrier ring segment and a simultaneous weakening of the cross section in the middle.
  • the carrier ring segments can also be pushed into or removed from the receiving grooves from an axial end of the carrier shaft, if the installation situation allows it.
  • the carrier shaft 40 has in its main axial area two receiving grooves 41 which are made on diametrically opposite sides of the outer circumference. In the end area, there are also sections for the drive and storage.
  • a single, semi-circular support ring segment 10 is in figure 2 shown in front view.
  • This is preferably formed from a thermoplastic material such as polyamide in order to have sufficient elasticity.
  • the elasticity is important, in connection with the shaping described below, to enable the form-fitting fixing on the carrier shaft as well as the later removal of it.
  • the carrier ring segment 10 On the outer circumference, the carrier ring segment 10 has a large number of undercut, keyhole-shaped recesses into which the brush strip elements can be inserted.
  • a radially inwardly extending projection 12 is formed on the end of the inner circumference, ie at a 3 o'clock or 9 o'clock position.
  • a recess 13 is provided in a central area, at a 12 o'clock position, in order to deliberately weaken the cross section at this point and thus to increase the elastic deformability of the carrier ring segment 10 in this area.
  • three radial through holes 14, 15 are provided, which are provided with an internal thread.
  • the through hole 15 in the center is used to accommodate a screw that forms the clamping element with which the carrier ring segment 10 is fixed and secured on the carrier shaft without play.
  • a further through hole 14 is arranged for a push-off element.
  • FIG 3 a brush roller 100 is shown from the front, in which a pair of axially spaced support ring segments 10 with brush strip elements 20 inserted therein are already attached to the underside of the support shaft 40 .
  • a second assembly in the form of another pair of axially spaced support ring segments 10 with brush strip elements 20 inserted therein is placed onto the support shaft 40 from above.
  • the clear width between the projections 12 is smaller than the horizontal measured distance between the respective boundary edges of the receiving grooves 41, which can be approximately equated with the shaft diameter at this point.
  • the carrier ring segments 10 cannot simply be put on, but rather they have to be spread open by elastic deformation so that the projections 12 can reach the level of the receiving grooves 41 and can deflect there. After the compression, the carrier ring segments 10 are already fixed to the carrier shaft 40 in a form-fitting manner.
  • the clamping screw 32 is first loosened in order to increase the deformability of the carrier ring segment 10.
  • the forcing screws 31 are then braced against the carrier shaft 40 on both sides, so that the two outer legs of the carrier ring segment 10 move outwards, as a result of which the projections move radially out of the receiving groove 41 .
  • This deformation is facilitated by the targeted weakening of the cross section at the recess 13 in the middle.
  • the clamping screw 32 can also be used for pushing off. It is also possible on the outer circumference in the parting line trained notch 16 to apply a lever tool to remove the carrier ring segment 10 can.
  • figure 6 shows a perspective view of parts of the brush roller 100 with two brush units side by side.
  • the brush strip elements 20 each have a keder-shaped thickening on the inside or are connected to a separate keder element 21 and are radially fixed in the recesses 11 . If the clamping effect between the piping element 21 and the recess 11 is not sufficient, a closing ring 50 is fastened on the carrier shaft 40 on both sides of the brush strip elements 20 for axial fixing. In the exemplary embodiment shown, this is also designed in two parts in order to be able to put it on and take it off at any axial position. In order to fulfill the function as a securing element for the brush strip elements 20 , the end rings 50 must extend radially at least up to the level of the piping element 21 .

Landscapes

  • Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP21198731.8A 2020-09-24 2021-09-24 Brosse cylindrique pour une installation centrifuge de grenaillage Pending EP3974069A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020124982.9A DE102020124982B4 (de) 2020-09-24 2020-09-24 Bürstenwalze für eine Schleuderstrahlanlage

Publications (1)

Publication Number Publication Date
EP3974069A1 true EP3974069A1 (fr) 2022-03-30

Family

ID=77924302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21198731.8A Pending EP3974069A1 (fr) 2020-09-24 2021-09-24 Brosse cylindrique pour une installation centrifuge de grenaillage

Country Status (2)

Country Link
EP (1) EP3974069A1 (fr)
DE (1) DE102020124982B4 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942210A (en) * 1974-02-07 1976-03-09 Clark Gaylord J Brush frame and shell
US9480329B2 (en) * 2014-03-24 2016-11-01 Koti Onroerend Goed B.V. Brush parts holder
DE102016112195A1 (de) 2016-07-04 2018-01-04 Wheelabrator Group Gmbh Bürsteneinheit für eine Bürstenwalze für eine Schleuderstrahlanlage
US20190367309A1 (en) * 2018-05-30 2019-12-05 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Brush roll

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533125A (en) 1968-08-21 1970-10-13 James A Buechel Segmental cylindrical brush assembly
SE521363C2 (sv) 1999-03-04 2003-10-28 Svenska Industriborstar I Vaes Förfarande vid montering av en trumma samt en trumma som ingår som del i en axel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942210A (en) * 1974-02-07 1976-03-09 Clark Gaylord J Brush frame and shell
US9480329B2 (en) * 2014-03-24 2016-11-01 Koti Onroerend Goed B.V. Brush parts holder
DE102016112195A1 (de) 2016-07-04 2018-01-04 Wheelabrator Group Gmbh Bürsteneinheit für eine Bürstenwalze für eine Schleuderstrahlanlage
EP3266343A1 (fr) * 2016-07-04 2018-01-10 Wheelabrator Group GmbH Unité de brosses pour un rouleau à brosse pour une installation de grenaillage
US20190367309A1 (en) * 2018-05-30 2019-12-05 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Brush roll

Also Published As

Publication number Publication date
DE102020124982A1 (de) 2022-03-24
DE102020124982B4 (de) 2023-04-27

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