EP3984696A1 - Schleifmaschine für holzprodukte und entsprechendes schleifwerkzeug - Google Patents

Schleifmaschine für holzprodukte und entsprechendes schleifwerkzeug Download PDF

Info

Publication number
EP3984696A1
EP3984696A1 EP21202814.6A EP21202814A EP3984696A1 EP 3984696 A1 EP3984696 A1 EP 3984696A1 EP 21202814 A EP21202814 A EP 21202814A EP 3984696 A1 EP3984696 A1 EP 3984696A1
Authority
EP
European Patent Office
Prior art keywords
sanding
machine
rotating
tool
sanding tool
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.)
Granted
Application number
EP21202814.6A
Other languages
English (en)
French (fr)
Other versions
EP3984696B1 (de
Inventor
Marino Angeloni
Andrea REGGIANI
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3984696A1 publication Critical patent/EP3984696A1/de
Application granted granted Critical
Publication of EP3984696B1 publication Critical patent/EP3984696B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/28—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding wood
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B19/24—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of wood, e.g. furniture

Definitions

  • the present invention generally relates to a machine for processing wooden products and, in particular, an improved sanding tool for a machine designed to sand and/or polish linear wooden products both in their raw state and provided with paints applied on the respective surfaces.
  • Sanding machines are known which are capable of sanding and/or polishing wooden products consisting, for example, of doors, furniture doors, table surfaces, etc.
  • these wooden products comprise flat surfaces parallel to each other, but they can also be provided with grooved shaping and/or raised surfaces.
  • An example of this type of wooden products is given by the doors provided with "ashlar" type panelling.
  • the sanding machines are equipped with one or more sanding tools consisting of rotating discs, usually called "sanding pads".
  • the sanding machines instead need to be equipped with different types of tools, such as abrasive brushes.
  • Known sanding machines are described, for example, in documents EP 2 123 396 A1 (in the name of the same applicant and on which the preamble of claim 1 is based), US 2017/057046 A1 and CN 107 030 554 A .
  • An object of the present invention is, therefore, to provide a sanding machine and a respective improved sanding tool which are capable of solving the aforementioned drawbacks of the prior art in an extremely simple, economical and particularly functional way.
  • Another object of the present invention is to provide a sanding machine and a respective improved sanding tool which are capable of reliably performing sanding and/or polishing operations even inside cavities of a generic wooden product having a particular shape, such as cavities having 90° angles.
  • the sanding machine 10 comprises a support structure 12 and at least one sanding unit 14 comprising in turn at least one sanding device 16.
  • Linear movement means 38, 40, 42 which will be described in more detail below and are configured to move the sanding device 16 along at least two (preferably three) axes A, B, C orthogonal to each other, are, therefore, provided on the sanding machine 10.
  • the sanding device 16 comprises at least one rotating sanding tool 18, driven by a respective motor 22 to rotate around its own rotation axis D (see Figures 3 and 4 ).
  • the rotating sanding tool 18 is provided with an abrasive surface 20 which extends on a plane P substantially perpendicular to the rotation axis D of this rotating sanding tool 18.
  • This abrasive surface 20 is configured for performing sanding and/or polishing of the surfaces of the wooden products.
  • At least the abrasive surface 20 of the rotating sanding tool 18 has a plan shape, that is to say obtained on its development plane P, of a flat and convex geometric figure having three or more sides 20A, 20B, 20C, 20D of equal length.
  • at least the abrasive surface 20 of the rotating sanding tool 18 has a plan shape of a Reuleaux triangle, wherein the three sides 20A, 20B, 20C of this Reuleaux triangle are curvilinear, convex with respect to the centre of gravity of the Reuleaux triangle and have the same length.
  • at least the abrasive surface 20 of the rotating sanding tool 18 can have a plan shape of a square with substantially straight sides 20A, 20B, 20C, 20D.
  • a Reuleaux triangle is a plane curve of constant width obtained starting from an equilateral triangle, that is to say with three equal-length sides. On each side an arc of a circle is constructed with a radius equal to the length of the side itself, so that the effective sides 20A, 20B, 20C of this Reuleaux triangle are curvilinear. If rotated on its own development plane, a Reuleaux triangle covers an area approximately equal to the one of a square. Consequently, when the rotating sanding tool 18 is rotated around its own rotation axis D, the respective abrasive surface 20 is able to almost completely sand and/or polish grooved surfaces which are placed in the vicinity of walls which form a 90° angle.
  • the abrasive surface 20 of the rotating sanding tool 18 is provided with three or more rounded shape edges 24A, 24B, 24C, 24D, wherein each edge 24A, 24B, 24C, 24D constitutes a respective vertex of the flat and convex geometric figure, that is to say of the Reuleaux triangle or of the square.
  • each edge 24A, 24B, 24C, 24D has a circular arc profile with a radius between about 1 mm and about 5 mm, preferably about 3 mm.
  • the rotating sanding tool 18 is able to almost perfectly sand and/or polish 90° grooved edges.
  • the rotating sanding tool 18 has a plan shape which is compatible with the plan shape of the respective abrasive surface 20.
  • the rotating sanding tool 18 comprises a metal plate 46, under which the abrasive surface 20 is mounted, where this metal plate 46 also has a plan shape which can be a Reuleaux triangle or a square.
  • the metal plate 46 of the rotating sanding tool 18 is preferably made of aluminium and has a preferred thickness of about 15 mm.
  • the abrasive surface 20, instead, preferably consists of a rubbery sponge provided with Velcro-type connection means, so as to be adapted to receive a layer 48 of abrasive paper ( Figures 7 and 10 ), also provided with Velcro-type connection means.
  • the metal plate 46 of the rotating sanding tool 18 can then be provided with at least one cavity 50 adapted to receive a corresponding pin 52 of the sanding device 16.
  • a corresponding pin 52 of the sanding device 16 Preferably, as shown in the figures, two cavities 50 and two corresponding pins 52 are provided.
  • the engagement of each pin 52 in the corresponding cavity 50 allows to block the rotation of the rotating sanding tool 18.
  • the rotating sanding tool 18 is operatively connected to the sanding device 16 in a non-rigid way, so as to allow the rotating sanding tool 18 itself, at the time of processing, to properly lean against and adjust to the surface of the wooden product.
  • the motor 22 which drives the rotating sanding tool 18 can preferably be connected to this rotating sanding tool 18 by means of at least one drive shaft 26 ( Figure 3 ) and one gearbox 28, 30, 32, 34, 36.
  • a first toothed wheel 28 of the gearbox is fastened on the drive shaft 26, which transmits motion to a second toothed wheel 30 and, in cascade, to a third toothed wheel 32, to a fourth wheel toothed 34 and finally to a fifth toothed wheel 36, obtaining a final ratio of 1:3 and the inversion of the incoming rotation, which allows the rotating sanding tool 18 to cover, while rotating, the square shape necessary to sand and/or polish recessed surfaces with 90° angles.
  • the working speed of the rotating sanding tool 18 is preferably expected in a range from 50 rpm to 100 rpm.
  • the rotating sanding tool 18 is provided, in a position opposite to the position in which its abrasive surface 20 is placed, with at least one quick coupling element 44 for releasable connection of said rotating sanding tool 18 to the respective gearbox 28, 30, 32, 34, 36.
  • the quick coupling element 44 allows the quick change of the rotating sanding tool 18 to be performed both in manual mode and in automatic mode if the sanding machine 10 is set up for automatic change of the rotating sanding tool 18.
  • linear movement means 38, 40, 42 of the sanding machine 10 can comprise:
  • the linear movement means 38, 40, 42 of the sanding machine 10 can also comprise a third motorized movement device 42, which is arranged to move the sanding device 16 with respect to the second motorized movement device 40 along a third axis C which is substantially horizontal and perpendicular both with respect to the first axis A and with respect to the second axis B.
  • the sanding device 16 and the respective rotating sanding tool 18 can be mounted on a linear movement unit 38, 40, 42 which allows three movements along a system of three orthogonal Cartesian axes A, B, C.
  • the sanding machine 10 can therefore be equipped with an electronic control unit (not shown) which allows these movements to be electronically controlled, thanks to the presence of height and dimension detecting devices present on the sanding machine 10 itself, so as to allow the rotating sanding tool 18 to start processing at the points provided in the wooden product.
  • an electronic control unit not shown

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP21202814.6A 2020-10-19 2021-10-15 Schleifmaschine für holzprodukte und entsprechendes schleifwerkzeug Active EP3984696B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202000024547 2020-10-19

Publications (2)

Publication Number Publication Date
EP3984696A1 true EP3984696A1 (de) 2022-04-20
EP3984696B1 EP3984696B1 (de) 2023-07-12

Family

ID=74068540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21202814.6A Active EP3984696B1 (de) 2020-10-19 2021-10-15 Schleifmaschine für holzprodukte und entsprechendes schleifwerkzeug

Country Status (2)

Country Link
EP (1) EP3984696B1 (de)
DK (1) DK3984696T3 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2123396A1 (de) 2008-05-22 2009-11-25 Marino Angeloni Glätt-/Bürstmaschine für Holzartikel und entsprechendes Betriebsverfahren
US20170057046A1 (en) 2015-08-31 2017-03-02 Robert Bosch Gmbh Sanding Plate of a Hand-Guided Electric Power Tool, and Electric Power Tool System
CN107030554A (zh) 2017-01-05 2017-08-11 丽水市知科科技有限公司 一种木材凸起处理装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2123396A1 (de) 2008-05-22 2009-11-25 Marino Angeloni Glätt-/Bürstmaschine für Holzartikel und entsprechendes Betriebsverfahren
US20170057046A1 (en) 2015-08-31 2017-03-02 Robert Bosch Gmbh Sanding Plate of a Hand-Guided Electric Power Tool, and Electric Power Tool System
CN107030554A (zh) 2017-01-05 2017-08-11 丽水市知科科技有限公司 一种木材凸起处理装置

Also Published As

Publication number Publication date
DK3984696T3 (da) 2023-10-02
EP3984696B1 (de) 2023-07-12

Similar Documents

Publication Publication Date Title
KR100783066B1 (ko) 콘크리트 연삭기
EP1649975B1 (de) Vorrichtung für das Herstellen von Kanten mit veränderbaren Schrägen auf dem Rand des Glases, des Marmors, der Stein- oder keramischen Materialplatten und der dergleichen
KR101842918B1 (ko) 공작기계의 로터리 테이블 구동장치
EP3984696B1 (de) Schleifmaschine für holzprodukte und entsprechendes schleifwerkzeug
EP1970160B1 (de) Bodenbearbeitungsgerät
CN1268916A (zh) 波纹斜边机
US741335A (en) Grinding-machine.
CN112059783B (zh) 一种磨具加工装置及其加工方法
KR101184107B1 (ko) 디버링 장치 및 디버링 휠
CN212044256U (zh) 一种铝型材喷砂设备
KR100820186B1 (ko) 연삭기용 탈착형 면취기
KR101367756B1 (ko) 파이프용 면취기
CN105215820A (zh) 一种研磨机
EP2025464B1 (de) Schleif-/Polierkopf
KR101656006B1 (ko) 면취기
KR100526707B1 (ko) 싱크대 상판 가공장치
CN201659473U (zh) 带砂光结构的四面刨机床
CN220839388U (zh) 一种铝单板边角毛刺打磨装置
CN218659586U (zh) 一种船用模具下料装置
KR102628016B1 (ko) 각각 회전하는 메인 트레이 및 보조 트레이를 포함하는 연마 장치를 운용 방법
EP2045096A1 (de) Rotationsübertragungsvorrichtung mit Träger für mehrere Räder
KR101325093B1 (ko) 연마판 가공 장치
CN219633400U (zh) 一种曲面砂光机
CN210633481U (zh) 一种数控磨床刀具加工支撑装置
JPH048178B2 (de)

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

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: 20220909

RAV Requested validation state of the european patent: fee paid

Extension state: MD

Effective date: 20220909

RAX Requested extension states of the european patent have changed

Extension state: ME

Payment date: 20220909

Extension state: BA

Payment date: 20220909

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

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: B24B 19/24 20060101ALI20221115BHEP

Ipc: B24B 7/28 20060101AFI20221115BHEP

INTG Intention to grant announced

Effective date: 20221130

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602021003423

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20230926

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

Effective date: 20230915

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230712

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1586605

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230712

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231013

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231113

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231012

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231112

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231013

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20231013

Year of fee payment: 3

Ref country code: DE

Payment date: 20230901

Year of fee payment: 3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

VS25 Lapsed in a validation state [announced via postgrant information from nat. office to epo]

Ref country code: MD

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230712

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT