EP3586672A1 - Cylindrical brush - Google Patents

Cylindrical brush Download PDF

Info

Publication number
EP3586672A1
EP3586672A1 EP19020395.0A EP19020395A EP3586672A1 EP 3586672 A1 EP3586672 A1 EP 3586672A1 EP 19020395 A EP19020395 A EP 19020395A EP 3586672 A1 EP3586672 A1 EP 3586672A1
Authority
EP
European Patent Office
Prior art keywords
thickness
brush
cylindrical
modular elements
holes
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Withdrawn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
EP19020395.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Andrea Dondi
Roberto Dondi
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.)
NUOVA F LLI DONDI Srl
Original Assignee
NUOVA F LLI DONDI Srl
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 NUOVA F LLI DONDI Srl filed Critical NUOVA F LLI DONDI Srl
Publication of EP3586672A1 publication Critical patent/EP3586672A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/001—Cylindrical or annular brush bodies
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
    • A46B7/10—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement as a rotating cylinder
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/30—Brushes for cleaning or polishing

Definitions

  • the invention concerns a cylindrical brush, generally usable to clean industrial and/or domestic surfaces with machinery on which it is intended to be mounted.
  • Cylindrical brushes which have predetermined lengths as a function of the use for which they are intended.
  • cylindrical brushes are mounted on machines that are used to clean surfaces that have significant sizes, such as, for example, floors of industrial buildings or large civil buildings.
  • these cylindrical brushes have a predetermined length which is a function of the width of the cleaning front they have to offer and of the sizes of the machines on which they are to be mounted.
  • these brushes are made by assembling together an adequate number of cylindrical modular elements, provided with radial bristles, which are each fitted and clamped next to each other on a central support tube which forms the supporting structure thereof, and with which they are coaxial.
  • terminal elements are provided which are typically suitable to tighten them together, packing them and immobilizing them so that they cannot rotate independently of one another.
  • the brush is formed by a coaxial succession of modular elements which have been previously provided with bristles disposed radially and which have threads at their respective ends, made so as to make their reciprocal screwing possible, until a brush of desired length is formed.
  • the brush according to the patent is also provided with a series of passages for a washing fluid, intended to wet the bristles and to clean the surface of the solar panels to be cleaned.
  • a first disadvantage is that when forming the brush it is not possible to obtain a completely homogeneous distribution of the bristles along its entire length, for the reason that in correspondence with the joining zones between the modules that comprise it, it is not possible to plant tufts of bristles which remain blocked therein in a stable way.
  • the reason for this problem is that normally the tufts of bristles that form the brushes are planted with automatic machines that form a general production line of cylindrical brushes and that in a first step create a programmed distribution of holes on the perimeter surfaces of each modular element, and in a second step plant in a forced way the tufts of bristles into the holes previously prepared for them.
  • the holes have a depth that extends in a centripetal direction, but which is limited in the thickness of the material with which the external surfaces of each modular element are made.
  • the surface distributions of the holes, and therefore of the tufts of bristles, are dependent upon the condition that one or more holes cannot coincide with the joining zones between adjoining modular elements, that is, in the facing zone between two ends of adjoining modular elements, as it would not be possible to clamp in any way every corresponding tuft of bristles intended to be accommodated in these particular holes.
  • pitches which should be constant in order to have a uniform distribution of the bristles and at the same time such as to exclude the possibility of positioning one or more holes in correspondence with the joining zones, are conditioned by the presence of the joining zones between the modular elements.
  • This conditioning determines alternatively the need to provide distributions of holes with non-constant pitches at least in proximity to joining zones between the modular elements, or to provide the distribution of holes with sufficiently wide pitches to avoid the disadvantage described above, that is, ensure that no hole can coincide with the joining zones.
  • a further disadvantage is that known brushes made by assembling together various modular and non-modular pieces, require maintaining warehouse stocks of these pieces, above all of the non-modular ones, in order to always have them always available.
  • modules which are used to form a complete brush of predetermined length have to be attached to each other in order to avoid relative rotations, as previously stated, and for this reason, the modules are rendered integral with each other with glues that on the one hand make them practically a single piece, but on the other hand do not allow disassembly and replacement of individual modules if needed, for example when there is an abnormal wear of part of the bristles of the cylindrical brush, due to impacts thereof against particular obstacles encountered during the cleaning of surfaces to be cleaned.
  • One purpose of the invention is to overcome the disadvantages of the state of the art.
  • Another purpose of the invention is to provide a cylindrical brush that has a uniform distribution of bristles along its entire length, even in the zones where the modular elements that comprise it are close to each other.
  • a further purpose of the invention is to provide a cylindrical brush which is formed by a predetermined number of modular elements, all integral with one another and without the possibility of rotating one with respect to the other when the brush is formed.
  • Another purpose of the invention is to provide a cylindrical brush that allows, if required, to replace one or more of the modular elements that comprise it without necessarily having to throw away the entire brush.
  • a further purpose of the invention is to provide a cylindrical brush which allows to reduce the warehouse stock of the modular elements which comprise it.
  • a further purpose of the invention is to provide a cylindrical brush which allows to make axial holes even with a small diameter and on considerable lengths, without the working being conditioned by bending of the modular elements.
  • a cylindrical brush is provided, according to the characteristics of claim 1.
  • 1 indicates a cylindrical brush according to the invention.
  • the brush 1 comprises at least two modular elements 2 and 3 assembled together with assembly means, each of which has a cylindrical body which defines an external surface, respectively 2a and 3a, and which, in the preferred embodiment described below, is axially passed through by an axial cavity but which, if required, could also be solid.
  • the number of modular elements can also be greater than two, because this number is determined as a function of the overall length of the cylindrical brush 1 to be made.
  • each modular element can also vary to make the cylindrical brush 1 with a desired length.
  • a first thickness S1 is defined between the external surfaces 2a and 3a of each modular element 2 and 3 and the axial cavity 4, which is common to both.
  • Each modular element 2 and 3 has a central axis of symmetry A and, at a first end, a cylindrical tang 5 which is passed through by the axial cavity 4 and which has a second thickness S2 and, at a second end opposite the first end, a hollow seating 6 which can be coupled mating with a tang 5 of an adjoining modular element and which has a projecting edge which has a third thickness S3 defined between the hollow seating 4 and the external surface 2a or 3a.
  • both the external surface of the tang 5 and also the internal surface of the hollow seating 6 are provided with respective threads 5a and 6a which can be reciprocally engaged by screwing, so as to connect the two modular elements 2 and 3 together, screwing one to the other.
  • the tang 5, the hollow seating 6 and the respective threads 5a and 6a form the assembly means mentioned above.
  • a plurality of holes 7 is made in the modular elements 2 and 3, which are generally oriented in a transverse direction, for example toward the central axis of symmetry A, that is, in a centripetal direction, and which have an axial length L and a bottom 8.
  • the holes 7 are obtained at reciprocal distances, called pitch P which are substantially constant, regardless of the fact that some of the holes 7 are in correspondence with the joining zones between the two modular elements 2 and 3, indicated with Z, that is, more precisely in this specific case, in the zone Z in which the tang 5 of the modular element 2 is screwed into the seating 6 of the modular element 3.
  • each hole 7 is such as to completely pass through the third thickness S3 of the hollow seating 6, until it also partially penetrates the second thickness S2 of the tang 5, positioning the bottom 8 within the latter, however without passing through it.
  • the length L could also be just equal to the thickness S3, in the specific case of couplings between conical profiles between the tang 5 (male) and the hollow seating 6 (female).
  • Each of the holes 7 is intended to receive the insertion, typically in a forced manner, of a tuft 9 of bristles which protrude substantially from the bottom 8 toward the outside, that is, beyond the external surfaces 2a, 3a, of the two modular elements 2 and 3, and that all together form the cleaning surface of the cylindrical brush 1.
  • Fig. 6 indicates in particular the transverse forces which retain the tufts of bristles 9 inside the respective holes 7.
  • the forces F1 are those which retain a median zone 9b of the tufts of bristles 9 while the forces F2 are those which retain a base zone 9a of the bristles 9.
  • a second possible embodiment is shown of the cylindrical brush 1, according to which the holes 7 are obtained with an orientation inclined with respect to the central axis of symmetry A.
  • an alternative embodiment of the assembly means which, in this case, comprise a cylindrical sleeve 11 which is externally equipped with a thread 1 1a to be screwed in the thread 6a of the hollow seating 6 of one of the two modular elements 2 or 3.
  • the assembly of the cylindrical brush 1 occurs as follows: at least two cylindrical elements 2 and 3 are assembled together screwing the tang 5 of one of them into the hollow seating 6 of the other.
  • the core After completing the screwing and in practice creating the core of the cylindrical brush 1, the core is put on an automatic drilling machine which, according to a predetermined work program, in a drilling station automatically makes a plurality of perimeter holes 7 on the surfaces 2a and 3a, directed proceeding from the outside toward the inside, normally in a centripetal direction, in the direction of the axis of symmetry A, that is, more generally, toward the axial cavity 4, and for a predetermined length L.
  • an automatic drilling machine which, according to a predetermined work program, in a drilling station automatically makes a plurality of perimeter holes 7 on the surfaces 2a and 3a, directed proceeding from the outside toward the inside, normally in a centripetal direction, in the direction of the axis of symmetry A, that is, more generally, toward the axial cavity 4, and for a predetermined length L.
  • the length L is such that each hole 7 penetrates into the thickness S1 without passing through it, and also preferably completely passes through the thickness S3 in the zones Z joining a tang 5 and a hollow seating 6, and extends to within the thickness S2, however without passing through it.
  • the pitch P with which the automatic machine makes the holes 7 is such as to allow to obtain a distribution of the holes 7 on the surfaces 2a and 3a both according to a known pattern of rows and columns, for example as indicated in fig. 1 , and also a checkered pattern, as shown by way of example in figs. 2 and 3 .
  • the checkered distribution allows to make the distribution of the tufts 9 of bristles thicker than known cylindrical brushes.
  • the automatic machine After completing the drilling step, the automatic machine, according to the work program, transfers the perforated core of the cylindrical brush 1 to a second work station in which tufts of bristles 9 are forcibly inserted in the holes 7, until the bottom 8 thereof is reached.
  • the tufts of bristles 9 are forcibly held in the respective holes 7 in their base portion 9a by the forces F2, when the holes 7 lie between the facing transverse surfaces, indicated for clarity with 15 and 16 in figs 5 and 6 ; the facing transverse surfaces 15 and 16 can be both perpendicular to the central axis of symmetry A, as in the drawing, and also inclined with respect thereto.
  • the tufts of bristles 9 occupying the holes 7 obtained in the joining zones Z act as a transverse clamping key between the two modular elements 2 and 3, preventing relative rotation movements.

Landscapes

  • Brushes (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
EP19020395.0A 2018-06-21 2019-06-21 Cylindrical brush Withdrawn EP3586672A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202018000002834U IT201800002834U1 (it) 2018-06-21 2018-06-21 Spazzola cilindrica

Publications (1)

Publication Number Publication Date
EP3586672A1 true EP3586672A1 (en) 2020-01-01

Family

ID=67003163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19020395.0A Withdrawn EP3586672A1 (en) 2018-06-21 2019-06-21 Cylindrical brush

Country Status (3)

Country Link
EP (1) EP3586672A1 (it)
CN (1) CN110623413A (it)
IT (1) IT201800002834U1 (it)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080276414A1 (en) * 2005-10-18 2008-11-13 Nilfisk-Advance, Inc. Floor Maintenance Machine Using a Spiral, Tufted, Cylindrical Brush
US20120311799A1 (en) 2011-06-07 2012-12-13 Anton Jaeger Cleaning apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502005000449D1 (de) * 2004-05-26 2007-04-19 Bhs Corr Masch & Anlagenbau Bürstenwalze
DE102009037126A1 (de) * 2009-08-11 2011-02-17 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum Reinigen einer Funktionsoberfläche zur Führung oder Behandlung einer Materialbahn
CN206016191U (zh) * 2016-08-03 2017-03-15 李文婷 能够延长的滚筒刷

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080276414A1 (en) * 2005-10-18 2008-11-13 Nilfisk-Advance, Inc. Floor Maintenance Machine Using a Spiral, Tufted, Cylindrical Brush
US20120311799A1 (en) 2011-06-07 2012-12-13 Anton Jaeger Cleaning apparatus

Also Published As

Publication number Publication date
CN110623413A (zh) 2019-12-31
IT201800002834U1 (it) 2019-12-21

Similar Documents

Publication Publication Date Title
JP6865289B2 (ja) 機械的および構造的な管類に対する機械的結合具
US4620460A (en) Socket set
US20110258798A1 (en) Customizable modular brush system and method thereof
US8297445B2 (en) Screen basket
US3827492A (en) Oil well brush tool
EP0941794A2 (de) Bohrwerkzeug
US3324496A (en) Rotary brush
EP3586672A1 (en) Cylindrical brush
AU2012318360B2 (en) Edge wear components for roller presses
WO2011122349A1 (ja) 鋼管杭の機械式継手構造
US11149501B2 (en) Rod coupler and coupled rod assembly
FI94901B (fi) Tiivisterengas
EP3165127B1 (de) Rotierende reinigungsbürste
DE102013105348A1 (de) Bohrer mit zentrierung der harten bohrspitze und hartlötverbindungs-steuermerkmal
US3643281A (en) Rotary brush
CN101155645B (zh) 有可更换的内部清洗刷组件的喷淋头
DE10129064A1 (de) Gesteinsbohrwerkzeug
US5415448A (en) Universal replacement tool handle combination
US20200324392A1 (en) Tool with tool elements
EP1839786A1 (de) Spannzangenfutter
US3120671A (en) Brush construction
EP3825565B1 (en) Method for manufacturing bushes and bushes
US20050081316A1 (en) Roller for rotating cylindrical brushes applicable in any industrial, road-related or other sector
US4194621A (en) Strip of joined fastening elements and method for its manufacture
JP2023518557A (ja) シート素材の自動裁断機における吸引裁断用のモジュール式支持要素

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20201230

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230520

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230808

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20231219