EP4218494A1 - Groupe de brosse - Google Patents

Groupe de brosse Download PDF

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Publication number
EP4218494A1
EP4218494A1 EP22153479.5A EP22153479A EP4218494A1 EP 4218494 A1 EP4218494 A1 EP 4218494A1 EP 22153479 A EP22153479 A EP 22153479A EP 4218494 A1 EP4218494 A1 EP 4218494A1
Authority
EP
European Patent Office
Prior art keywords
brush
unit
axis
strip
brush holder
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
EP22153479.5A
Other languages
German (de)
English (en)
Inventor
Sander Hendrikus Johannes Hofstee
Jan Frederik DODDEMA
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.)
Monti Werkzeuge GmbH
Original Assignee
Monti Werkzeuge 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 Monti Werkzeuge GmbH filed Critical Monti Werkzeuge GmbH
Priority to EP22153479.5A priority Critical patent/EP4218494A1/fr
Priority to TW112102536A priority patent/TW202335606A/zh
Priority to CN202310091202.0A priority patent/CN116491756A/zh
Priority to AU2023200348A priority patent/AU2023200348A1/en
Priority to JP2023008440A priority patent/JP2023109167A/ja
Priority to US18/100,585 priority patent/US20230232975A1/en
Priority to CA3187780A priority patent/CA3187780A1/fr
Priority to KR1020230009637A priority patent/KR20230115258A/ko
Priority to MX2023001135A priority patent/MX2023001135A/es
Publication of EP4218494A1 publication Critical patent/EP4218494A1/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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/001—Cylindrical or annular brush bodies
    • A46B13/006—Cylindrical or annular brush bodies formed by winding a strip tuft in a helix about the body
    • 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
    • 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
    • A46B9/026—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups where the surface of the brush body or carrier is not in one plane, e.g. not flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/30—Brushes for cleaning or polishing
    • A46B2200/3086—Brushes for polishing
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/30—Brushes for cleaning or polishing
    • A46B2200/3093—Brush with abrasive properties, e.g. wire bristles

Definitions

  • the invention relates to a brush unit with a brush holder that can be driven in rotation about an axis and a ring brush consisting essentially of a brush strip and bristles connected to it, forming a bristle ring and protruding outwards.
  • the subject matter of the invention is also a rotary brush tool equipped with such a brush unit and a method for processing a surface of a workpiece with the aid of said brush unit.
  • the procedure is such that the bristles are slowed down for a specific time with the aid of the stopping means dipping into the rotating ring of bristles.
  • the kinetic energy stored as a result ie by the bristles and/or a brush belt holding the bristles, can be used.
  • the kinetic energy is used for predominantly percussive processing of a surface of the workpiece using the bristles. This achieves effects comparable to those observed with so-called sandblasting.
  • the in the rotating ring of bristles immersing stop means is also designed as a grinding body for the bristles.
  • the two functions ie the stopper function and the grinding function, according to a direction of rotation of the ring brush and/or a setting position of the stopping means in comparison to the bristle ring.
  • the stop means is designed to be adjustable compared to the bristle ring.
  • the stop means is adjusted radially and/or tangentially.
  • An eccentric adjustment of the stopping means is also possible.
  • the stopping means can be adjusted by the driven bristles.
  • the anisotropy or lack of uniformity of the roughness profile observed in the prior art can essentially be attributed to the fact that the bristles are typically anchored in the brush strip. Since the bristles are often designed as U-shaped bristles, the brush belt carrying the bristles is equipped in its circumferential direction with rows of bristles and axial distances between them, which, for example, U-shape of the bristles are owed. These distances between the individual rows of bristles result in the roughness profile that is produced being uneven when the workpiece surface is machined with impact. In practice, attempts are made to counteract this by moving the brush unit or a rotary brush tool equipped with it back and forth over the surface by a user, for example.
  • the invention is based on the technical problem of further developing such a brush unit in such a way that the roughness profile produced in this way on the surface of the workpiece processed with it has increased uniformity compared to the prior art. At the same time, the possibility should also be opened up of increasing the roughness if necessary.
  • the invention proposes in a generic brush unit within the scope of the invention that the brush belt with its longitudinal extent and thus also the bristle ring is connected to the brush holder running obliquely to the axis, deviating from a vertical orientation compared to the axis of the brush holder.
  • the procedure is usually such that the longitudinal extent of the brush strip and the axis of the brush holder enclose an acute angle of approximately 60° to less than 90°.
  • acute angles of approximately 70° to 85° are preferably observed.
  • angles of approximately 85° have proven to be particularly advantageous.
  • the brush strip is guided around the axis of the brush holder in more than one revolution and is connected to it.
  • the design is such that the brush strip encloses the brush holder in a helical manner.
  • the procedure here is generally such that the brush strip running helically to the axis of the brush holder has a constant pitch angle, consequently the helix described by the brush strip in comparison to the axis of the brush holder runs regularly. In principle, of course, an irregular course is also conceivable.
  • the brush holder has a circumferential groove for receiving the brush strip.
  • the procedure is usually such that the brush strip engages in the groove in question essentially laterally without play.
  • the groove is advantageously delimited by respective groove walls.
  • the groove walls are generally perpendicular to a cylindrical surface of the brush holder. In fact, it has proven to be particularly favorable if the brush holder, including the groove and groove walls, is designed as a plastic molded part and in particular a plastic injection molded part.
  • the brush strip is connected to the brush holder at least at certain points.
  • the connection is generally made mechanically and/or adhesively.
  • the brush belt is designed as a fabric belt, for example as a polyamide fabric belt.
  • the described brush unit can advantageously be equipped with an additional stop means that dips into the rotating ring of bristles.
  • the roughness can be influenced particularly favorably and positively with the aid of the stopping agent, as is shown in EP 1 834 733 B1 the applicant is described in detail. In principle, of course, such a stopping device is also unnecessary.
  • the invention also relates to a rotary brush tool, as described in detail in claim 13, and a method for machining the surface of the workpiece in question, according to claims 14 and 15.
  • a rotary brush tool is shown, which is equipped with a machine housing 1 and a drive unit 2 for a brush unit 3 that is merely indicated and accommodated therein.
  • the brush unit 3 has a brush holder 4 that can be driven in rotation about an axis A.
  • the brush holder 4 is the subject of a detailed view in FIG 2 .
  • a ring brush 5, 6 consisting essentially of a brush belt 5 and connected thereto and forming a ring of bristles 7 and after outside protruding bristles 6 provided.
  • the individual bristles 6 can be designed in a U-shape and can be pushed through respective receiving bores 5a in the brush belt 5 . That is in detail only in the 3 implied.
  • the brush belt 5 with its in the 2 and 3 indicated longitudinal extent L and thus also the bristle ring 7 is connected to the brush holder 4 running obliquely to the axis A, deviating from a vertical orientation compared to the axis A of the brush holder 4 .
  • an acute angle a which is observed between the longitudinal extension L of the brush strip 5 on the one hand and the axis A of the brush holder 4 on the other hand.
  • the acute angle ⁇ in question assumes values in the range of approximately 70° to 85°, but is in any case below 90°. Angles ⁇ in the range of approximately 85° are usually used here, which of course only applies as an example.
  • the disk in question rotates during a rotation of the brush holder 4 about its axis A at a 3 indicated rotation even about its own axis of rotation R.
  • the rotation of the brush holder 4 and the inclination of the disc it now comes to the fact that the associated and fictitious axis of rotation R in the 3 indicated change of direction undergoes.
  • a precession movement or wobbling movement of the assumed disk is observed here, which manifests itself on the basis of the different orientations of the axis of rotation R of the assumed disk.
  • the bristles 6 are usually U-shaped and consequently have a slight distance between them, the result is that the surface 9 of the workpiece in question is no longer practically strip-like applied by the individual bristles 6--as in the prior art , but rather the individual processing areas B of the bristles 6 overlap one another and in this way overall ensure a particularly homogeneous roughness profile on the surface 9 of the workpiece in question. This has not previously been observed with this consequence and configuration of the roughness profile.
  • the brush strip 5 is now guided not only in one revolution around the brush holder 4, but in more than one revolution around the axis A of the Guided around brush holder 4 and connected to it.
  • the brush strip 5 encloses the brush holder 4 in a helical manner.
  • the overall design is such that the brush strip 5 running helically to the axis A of the brush holder 4 has a constant pitch angle, ie in the end the individual in the 2 indicated angle ⁇ between the respective longitudinal extension L of the brush strip 5 and the axis A of the brush holder 4 are each designed to be the same size. It is therefore a uniform helix in which the brush strip 4 is guided around the axis A in question.
  • the design is also such that the brush strip 4 engages essentially laterally without play in a peripheral groove 10, as can be seen from FIG 2 can understand.
  • the groove 10 in question is delimited by groove walls 11 each standing up against a cylinder surface.
  • the brush holder 4 together with the groove 10 and the groove walls 11 defining the groove 10 is designed overall as a plastic part and preferably as a plastic injection molded part.
  • the groove 10 and the groove walls 11 can also be printed or introduced by a three-dimensional shaping process. A mechanical production of the groove 10 as well as the groove walls 11 by, for example, milling a cylindrical plastic part is conceivable.
  • the brush strip 5 is connected to the brush holder 4 at least at certain points.
  • the punctiform connection can take place mechanically and/or adhesively.
  • the design is usually such that the brush belt 4 is produced as a fabric belt, in particular from a polyamide fabric.
  • a dipping into the rotating bristle ring 7 and only in the 1 indicated stopping means 12 may be provided, which is attached to a boom 13 of the rotary brush tool shown there or its machine housing 1 is connected.
  • each individual bristle 6 or each spiral of the brush belt 4 on the surface 9 of the workpiece processes the already mentioned and axially extended processing zone B, as is shown in FIG 3 is shown.
  • the individual processing zones B overlap and the surface 9 is equipped with a particularly homogeneous roughness profile.
  • the individual bristles 6 are made of steel. In principle, of course, other materials such as plastic or combinations are also conceivable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Massaging Devices (AREA)
  • Transplanting Machines (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP22153479.5A 2022-01-26 2022-01-26 Groupe de brosse Pending EP4218494A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP22153479.5A EP4218494A1 (fr) 2022-01-26 2022-01-26 Groupe de brosse
TW112102536A TW202335606A (zh) 2022-01-26 2023-01-19 刷具總成
CN202310091202.0A CN116491756A (zh) 2022-01-26 2023-01-20 刷总成、旋转刷具以及用于加工工件表面的方法
AU2023200348A AU2023200348A1 (en) 2022-01-26 2023-01-23 Brush unit
JP2023008440A JP2023109167A (ja) 2022-01-26 2023-01-24 ブラシユニット
US18/100,585 US20230232975A1 (en) 2022-01-26 2023-01-24 Rotary brush assembly
CA3187780A CA3187780A1 (fr) 2022-01-26 2023-01-25 Assemblage de brosse
KR1020230009637A KR20230115258A (ko) 2022-01-26 2023-01-25 브러시 조립체
MX2023001135A MX2023001135A (es) 2022-01-26 2023-01-26 Montaje de cepillo.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22153479.5A EP4218494A1 (fr) 2022-01-26 2022-01-26 Groupe de brosse

Publications (1)

Publication Number Publication Date
EP4218494A1 true EP4218494A1 (fr) 2023-08-02

Family

ID=80035136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22153479.5A Pending EP4218494A1 (fr) 2022-01-26 2022-01-26 Groupe de brosse

Country Status (9)

Country Link
US (1) US20230232975A1 (fr)
EP (1) EP4218494A1 (fr)
JP (1) JP2023109167A (fr)
KR (1) KR20230115258A (fr)
CN (1) CN116491756A (fr)
AU (1) AU2023200348A1 (fr)
CA (1) CA3187780A1 (fr)
MX (1) MX2023001135A (fr)
TW (1) TW202335606A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220202154A1 (en) * 2020-12-31 2022-06-30 Gregory Joseph Electric Hair Brush

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834733B1 (fr) 2006-03-13 2008-08-20 Monti-Werkzeuge Gmbh Unité de brosses et procédé d'usinage d'une surface d'une pièce à l'aide d'une telle unité
US20090199356A1 (en) * 2008-02-13 2009-08-13 Aoki Sweeper Co., Ltd. Linear or disk brush material, cylindrical brush, and method of manufacturing the linear or disk brush material
WO2012038537A1 (fr) 2010-09-24 2012-03-29 Monti-Werkzeuge Gmbh Ensemble brosse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1834733B1 (fr) 2006-03-13 2008-08-20 Monti-Werkzeuge Gmbh Unité de brosses et procédé d'usinage d'une surface d'une pièce à l'aide d'une telle unité
US20090199356A1 (en) * 2008-02-13 2009-08-13 Aoki Sweeper Co., Ltd. Linear or disk brush material, cylindrical brush, and method of manufacturing the linear or disk brush material
WO2012038537A1 (fr) 2010-09-24 2012-03-29 Monti-Werkzeuge Gmbh Ensemble brosse

Also Published As

Publication number Publication date
KR20230115258A (ko) 2023-08-02
AU2023200348A1 (en) 2023-08-10
US20230232975A1 (en) 2023-07-27
TW202335606A (zh) 2023-09-16
MX2023001135A (es) 2023-07-27
JP2023109167A (ja) 2023-08-07
CN116491756A (zh) 2023-07-28
CA3187780A1 (fr) 2023-07-26

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