EP4406697A1 - Procédé et appareil pour lisser du mastic - Google Patents

Procédé et appareil pour lisser du mastic Download PDF

Info

Publication number
EP4406697A1
EP4406697A1 EP23153095.7A EP23153095A EP4406697A1 EP 4406697 A1 EP4406697 A1 EP 4406697A1 EP 23153095 A EP23153095 A EP 23153095A EP 4406697 A1 EP4406697 A1 EP 4406697A1
Authority
EP
European Patent Office
Prior art keywords
cylindrical roll
smoothing
putty
temperature
frame
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
EP23153095.7A
Other languages
German (de)
English (en)
Inventor
Kimmo AHONEN
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.)
Koskisen Oy
Original Assignee
Koskisen Oy
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 Koskisen Oy filed Critical Koskisen Oy
Priority to EP23153095.7A priority Critical patent/EP4406697A1/fr
Publication of EP4406697A1 publication Critical patent/EP4406697A1/fr
Pending legal-status Critical Current

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
    • B24B7/005—Portal grinding machines
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/14—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the temperature during grinding
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • 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
    • B24B7/06—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving conveyor belts, a sequence of travelling work-tables or the like
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/165—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
    • E04F21/1652—Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers for smoothing and shaping joint compound to a desired contour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing

Definitions

  • the invention relates to the technical field of automatic and semi-automatic panel processing equipment, in particular to a putty or paste smoothing method and device. More specifically, invention relates to smoothing putty on plywood panel or other wooden planar materials. The putty may have been either ready dosed on the panel or being dosed within this device with an integrated dosing equipment
  • Plywood panels are made for several purposes.
  • the types of plywood used for constructing a high quality finished surface have at least one surface made of selected veneer ply in order to give the level of quality needed for the intended purpose.
  • this surface ply may have defects such as scratches, branch holes and cracks. These defects may be repaired by filling them with a putty or paste material that is smoothed on the defect.
  • the defect is opened or prepared by a suitable tool.
  • the putty is dosed precisely into a defect such as an open hole, scratch, rip or a tooled opening on the panel surface (with a regulated volume, temperature and viscosity, having a volume little higher than the opening is). After dosing the putty is smoothed.
  • the putties used must be resistant to wear and damages when set. This leads to use of putties that are highly sticky and difficult to smooth and scrape form a surface. Residual putty may be left on the sides of the defect or the putty may rise slightly above the surface of the panel. Now, when the panels are stacked, the unset putty may soil the panel stacked above it and even glue the panels together requiring separation by force. The putty also sticks easily to smoothing and spreading tools and even clothes if contacted. For these reasons, there is a need for a new method and tool for smoothing the putty.
  • an apparatus for smoothing putty on plywood panel comprising:
  • a method for smoothing patty spread on a surface of a plywood panel comprising:
  • smooth is a surface having only random deformations caused by roughness of the surface without any regular patterns of form.
  • Plywood is in this context a panel of wooden material having at least one veneer ply on at least one surface of the panel.
  • the invention relates to the technical field of automatic and semi-automatic panel processing equipment, in particular to a temperature regulated putty or paste spreading and smoothing device.
  • the putty may be either ready dosed on the panel or being dosed within this device with an integrated dosing equipment.
  • the smoothing apparatus is usually fixed to a linear 3D mechanism, a 3D portal, which 1) provide accurate and stable movement in horizontal, lateral and spreading direction; 2) allows power supply and automation connection for the device.
  • the plywood structure is formed in the lay-up process, where the dry graded and prepared veneers are glued and laid up crosswise.
  • the best quality veneers are set as the top and bottom face veneers ('plys').
  • the lay-ups move via pre-press to hot press, where the plywood gets its form, thickness and strength.
  • the panels discharged from the press are stacked into bundles, which are fed onto the trimming and sawing line. Surface defects on panels can be repaired before sawing but normally, the first sawn panels are next inspected, repaired, sanded and packed for delivery.
  • Defects repaired in top/bottom ply include usually:
  • the surfaces of birch plywood normally require less repairing than softwood plywood.
  • the average number of defects on birch faces is less than 5, whereas the number of defects on softwood faces is two or three times that.
  • the panels are placed on a unrepaired panel stack 4.
  • the panels are first inspected by the gluing quality with the glue bond ultrasonic detector (blow detector) and next, the visual quality in top/bottom ply is inspected.
  • the inspection is made on both surfaces (top and bottom) of the panel where as quality parameters are determined in the customer order, and performed in accordance with the standards' quality requirements or special requirements agreed with the customer.
  • an automatic panel repair line the panel surface is imaged with a 3D-scanner 6, after which the panels are transferred to the repairing station ( FIGS. 2 and 3 ) on a conveyor 7.
  • the operation of the line is based on machine vision, which detects and analyses the defects on the panel surface and provide coordinates for the repair cell(s).
  • the repairing unit(s) open the defects by milling cell 1 and in individual putty dosing cell 2 fills them with putty.
  • the residuals from milling are sucked into the wood dust collector.
  • the putty is normally a general-purpose wood putty with short curing time.
  • the filling robot at the putty dosing cell 2 can also be equipped with a doser for 2-component polyurethane or epoxy putty. UV-curing putty for engineered hardwood flooring products can also be used in the repairing cells.
  • the panel After repairing one side the panel it is either stacked into bundles or turned upside down right away and followed the same procedure for the other side. Finally, the ready panel is stacked into bundles on repaired panel stack 5 and taken into curing storage before sanding.
  • Spreading knob is a just fixed ring-shaped structure around the dosing tube from various materials, plastic, composite etc. For polyurethane there is no spreading tool used because of the material curing reactivity.
  • the putty is smoothed out and the spreading is finalized by smoothing tool 3.
  • the panels are transferred between successive cells and tools 1, 2, 3 by a conveyor 7.
  • the milling tools, dosing tools and smoothing tool are arranged on a 3D-portal placed over the conveyor 7.
  • Tools at each of the cells 1, 2, 3 are mounted on a bridge beam 8 that can be moved along a set of sidetracks 9. Tools may move also along the bridge beam 8 and in vertical direction towards and away from the conveyor and panel places on the conveyor. This allows 3D-movement for performing the reparation steps.
  • the portal has to be able to cover such an area.
  • FIGURE 1 illustrates a smoothing apparatus in accordance with at least some embodiments of the present invention.
  • the panel that is treated is depicted with reference number 10 and 11 depicts the repair area filled with putty.
  • the smoothing apparatus has a frame 12 that in this example is formed as a U-shaped fork.
  • a cylindrical roll 13 is mounted between the branches of the fork so that is can be rotated around its longitudinal axis by an actuator 14.
  • the actuator is preferably an electric motor connected through a gear box 15 to the axle 16 of the cylindrical roll 13 but pneumatic or hydraulic actuators can be used if such power is easily available.
  • the actuator is operated by a controller 17 that sets the speed or rotation and also rotating direction, if needed.
  • the axle 16 is hollow forming a liquid connection inside the cylindrical roll 13 through a channel 18.
  • the inflow line 19 is depicted schematically as 19.
  • the liquid is fed to the cylindrical roll 13 through the inflow line 19 connected to the channel 18 in the axle 16.
  • the temperature of the liquid is adjusted in the temperature control unit 20.
  • the liquid flows in a closed circuit wherein the outflow from the cylindrical roll 13 is arranged through the axle 16 in a similar way as the inflow.
  • a return line 21 circulates the liquid back to the temperature control unit 20.
  • the temperature control unit may be any commercially available or custom made unit capable of cooling or heating a and circulating liquid. Cooling is preferable, but not always needed.
  • the smoothing apparatus is mounted on the 3D-portal through attachment ring 22.
  • the mounting setup includes an angle actuator 23 that is arranged to rotate the smoothing apparatus and consequently the cylindrical roll 13 around an axis that is perpendicular to the central axis of the cylindrical roll 13.
  • the angle actuator 23 is used to set the smoothing angle over the repair area 11.
  • An electric step motor or other actuator capable of precise setting is usable as such actuator.
  • the smoothing may be performed longitudinally, sideways or in an angle over the repair area 11 by setting the position of the cylindrical roll 13 by the angle actuator 23. By changing the angle also the rotating direction of the cylindrical roll 13 in relation to the direction of its linear movement can be changed by rotating the cylindrical roller minimum 180°.
  • a scraper 24 is arranged against the surface of the cylindrical roll 13 for cleaning the putty stuck in the surface of the cylindrical roll 13.
  • the cylindrical roll 13 When operated, the cylindrical roll 13 is rotated on a desired operating speed and transferred over the repair area 11.
  • the excess putty 25 is collected on the surface of the cylindrical roll and collected away by the scraper 24.
  • the scraper 24 is a conventional scraper blade or knife.
  • This controller 17 may be a unit operating only the smoothing apparatus or it may be the control unit of the repair line, for example.
  • the putty is dosed precisely into a defect such as an open hole, scratch, rip or a tooled opening on the board surface with a regulated volume, temperature and viscosity.
  • a defect such as an open hole, scratch, rip or a tooled opening on the board surface with a regulated volume, temperature and viscosity.
  • the volume dosed is little higher than the volume of the opening. Therefore, the excess has to be smoothed ad removed.
  • the cylindrical roll 13 of the apparatus is kept in a certain temperature by circulating liquid (water&glykole, for example) through canals tooled inside the cylindrical roll.
  • the cylindrical roll rotates on the surface of the board and is touching the panel surface only with .
  • the linear mechanism controller for example a 3D-portal described above, provides a given height, surface location and direction of movement according to the detection information from the 3D-scanner. The rotating direction and angle may differ.
  • the roll spreads the putty by pressing and smoothens it by rotating into the defect to the level of the surface of the panel and the excess material sticks to the roll surface. The excess material is cleaned from the roll by the mechanical clamp or knife and collected to a waste or reuse bucket.
  • any robot having sufficient number of axels of movement is suitable or a support compensating the weight of the apparatus so that it can be operated by hand can be contemplated.
  • the rotating speed of the cylindrical roll 13 is preferebly adjustable in order to set is according to the transfer/working speed of the cylindrical roll.
  • the operating temperature is between 20 - 60°C so that the temperature of the panel is within said limit. Typical temperature is 30°C.
  • the spreading and smoothing temperature of the putty is adjustable between 20 - 60°C so that the composition of the putty is between flexibly pasty and close to liquid.
  • the cylindrical roll 13 is preferably totally of metal and the surface is smooth without any tooled formations.
  • Full metal construction is preferable as metals conduct heat well.
  • composite structures may be contemplated, for example a roll having a surface coating of nickel or chromium alloys, or for example an aluminium alloy body and coated outer surface.
  • the width of the roll is typically such that it extends 20 mm over the largest size of the defect to be repaired.
  • the width of the roll varies according to the size of the apparatus.
  • the dimensions of the roll might be 60 mm x 55 mm and the size of the defects that are repaired 1 - 50 mm.
  • FIGURE 3 illustrates an example apparatus capable of supporting at least some embodiments of the present invention.
  • the invention is applicable in wood working industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
EP23153095.7A 2023-01-24 2023-01-24 Procédé et appareil pour lisser du mastic Pending EP4406697A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23153095.7A EP4406697A1 (fr) 2023-01-24 2023-01-24 Procédé et appareil pour lisser du mastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23153095.7A EP4406697A1 (fr) 2023-01-24 2023-01-24 Procédé et appareil pour lisser du mastic

Publications (1)

Publication Number Publication Date
EP4406697A1 true EP4406697A1 (fr) 2024-07-31

Family

ID=85076152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23153095.7A Pending EP4406697A1 (fr) 2023-01-24 2023-01-24 Procédé et appareil pour lisser du mastic

Country Status (1)

Country Link
EP (1) EP4406697A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912042U1 (de) * 1989-10-10 1989-11-23 Kreipe, Herbert, 4930 Detmold Maschine zum Bearbeiten von Werkstückflächen
US6010793A (en) * 1993-11-22 2000-01-04 Yamaha Corporation Wood board, surface-decorated wood board, and manufacturing method therefor
US20080152876A1 (en) * 2006-12-21 2008-06-26 Tryggvi Magnusson Veneer Filling and Repair Method and Composition
CN111673560A (zh) * 2020-06-05 2020-09-18 马鞍山市谷庆门业有限公司 一种木门制造用表面打磨装置
CN115256148A (zh) * 2022-07-19 2022-11-01 万华禾香板业（怀远）有限责任公司 一种人造板生产用砂光机
CN217802225U (zh) * 2022-08-03 2022-11-15 临沂木头人智能科技有限公司 一种用于改善人造板表面缺陷的智能修补装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912042U1 (de) * 1989-10-10 1989-11-23 Kreipe, Herbert, 4930 Detmold Maschine zum Bearbeiten von Werkstückflächen
US6010793A (en) * 1993-11-22 2000-01-04 Yamaha Corporation Wood board, surface-decorated wood board, and manufacturing method therefor
US20080152876A1 (en) * 2006-12-21 2008-06-26 Tryggvi Magnusson Veneer Filling and Repair Method and Composition
CN111673560A (zh) * 2020-06-05 2020-09-18 马鞍山市谷庆门业有限公司 一种木门制造用表面打磨装置
CN115256148A (zh) * 2022-07-19 2022-11-01 万华禾香板业（怀远）有限责任公司 一种人造板生产用砂光机
CN217802225U (zh) * 2022-08-03 2022-11-15 临沂木头人智能科技有限公司 一种用于改善人造板表面缺陷的智能修补装置

Similar Documents

Publication Publication Date Title
US4128119A (en) Apparatus for processing workpieces in the form of short-length elongate timber waste into usable timber
NL2015103B1 (nl) Inrichting en werkwijze voor het bewerken van een flexibel vel.
EP0370731B1 (fr) Machine pour le découpage de palettes
EP4406697A1 (fr) Procédé et appareil pour lisser du mastic
CN106670047B (zh) 一种自动粘棒流水线生产方法
EP1272308B1 (fr) Soudage par pression
CN117066069B (zh) 垫板自动涂胶工艺方法及垫板自动涂胶机
EP3254817A1 (fr) Procédé de restauration ou de consolidation d'une dalle en pierre
CN104786294B (zh) 一种结构芯材套装的生产工艺
CN210308242U (zh) 一种木板自动检测修复设备
CN102680381A (zh) 盐雾划痕试验设备
KR20120022301A (ko) 가공테이블의 칩 제거장치
CN212948775U (zh) 一种油加热压力成型机
CN211333525U (zh) 覆膜板材去边去膜装置
CN210756397U (zh) 一种切割机工作平台
KR101935202B1 (ko) 건물외벽 균열 보수공법 및 상기 보수공법을 위한 v커팅장치
CN218227057U (zh) 一种家具生产用免漆板加工设备
CA1080556A (fr) Methode et appareil servant a marquer les fissures superficielles de pieces en acier
WO2006048496A1 (fr) Procede et appareil pour produire un noyau
CN209240558U (zh) 一种纸箱开槽装置
CN116714288A (zh) 一种飞机复合材料破孔损伤预制体填充快速修理方法
ITRN20070063A1 (it) Bordatrice per pannelli con relativo apparato per lavorazione dei bordi
CN221404949U (zh) 一种可自动化制作实验用污布的装置
CN114735160B (zh) 一种玻璃钢船艇糊制装置及船艇糊制工艺
CN114800757B (zh) 一种集成实木门板拼板工装

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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR