EP3028809A1 - Vorrichtung zur automatischen glättung der abgerundeten ecken von vorwiegend flachen platten aus holz und/oder anderen materialien oder anderen hergestellten produkten - Google Patents

Vorrichtung zur automatischen glättung der abgerundeten ecken von vorwiegend flachen platten aus holz und/oder anderen materialien oder anderen hergestellten produkten Download PDF

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Publication number
EP3028809A1
EP3028809A1 EP15197127.2A EP15197127A EP3028809A1 EP 3028809 A1 EP3028809 A1 EP 3028809A1 EP 15197127 A EP15197127 A EP 15197127A EP 3028809 A1 EP3028809 A1 EP 3028809A1
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EP
European Patent Office
Prior art keywords
panel
carriage
hook
smoothing
panels
Prior art date
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Granted
Application number
EP15197127.2A
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English (en)
French (fr)
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EP3028809B1 (de
Inventor
Roberto Sorbini
Fabrizio Filippini
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SORBINI Srl
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SORBINI Srl
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    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • 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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/002—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces
    • 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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/18—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of wood

Definitions

  • the invention relates to an apparatus for automatically sanding or smoothing the rounded corners of prevalently flat panels made of wood and/or of other material or other manufactured products, during a painting and/or finishing operation of the panels or manufactured products.
  • the smoothing system although still of oscillating type or of any other suitable type, is mounted on a carriage that can slide on guides parallel to the longitudinal side of the panel that has at the ends the corners to be smoothed and the carriage is motorised and means are provided that, to ensure that when the corner of the panel to be sanded reaches a predetermined position with respect to the smoothing means, the means remain aligned precisely with the panel and accompany this latter during feed, at the same speed, to sand the front or rear corner of the longitudinal side of the panel, with the speed required to perform sanding well, even at low speed, but no longer negatively influencing the feed speed of the panel, as the smoothing means follow the panel, after which the means move away from the longitudinal side of the panel and with a reverse movement of said supporting carriage
  • the letter P indicates, in plan view, the panel on which it is necessary to smooth the rounded corners A, the upper edge B of which can in turn be rounded, as shown in Fig. 2 .
  • the corners A which can also be rounded on both sides, are smoothed using abrasive rotating brushes or heads T, of known type, provided with a lateral surface T1 made of consecutive inserts of abrasive material, mounted on a body partly made of pliable- elastic material and the generatrix of which reproduces the profile both of the rectilinear part of the lateral surface and of the curved part of the edge B of the panel P.
  • Figs. 5 and 6 From Figs. 5 and 6 it can be seen that the panel P is arranged on a horizontal plane and is fed, by known conveying means, not shown, with a known and constant speed in the direction indicated by the arrow F, with the longitudinal side L bearing at the ends the rounded corners A (front A' and rear A") mentioned previously, arranged parallel to the direction of feed F, cantilevered from said conveyor means and facing the apparatus M1, which in the representation of Figs. 5 and 6 is responsible for smoothing the front corner in the direction of feed A' of the panel.
  • the apparatus M1 Parallel to the longitudinal side L of the panel P, the apparatus M1 has a linear support structure 1, of adequate length, which if necessary can be arranged for adjustment in the position in height, by means of a guide and vertical slide assembly G1 and in the transverse orientation, also by means of an assembly G2 for rotation of the structure 1 around its longitudinal axis.
  • the assemblies G1 and G2, shown schematically in Fig. 6 are known in machines for machining the rectilinear sides L and the corners A of panels P and therefore will not be described in greater detail herein.
  • a main and horizontal carriage 4 slides with precision, with the interposing of one or more slides 3 with low coefficient of friction, for example recirculating ball slides, and which through a downward facing appendix 5 is connected to the moving part of a rectilinear actuator 6 fixed on the structure 1, parallel to the guide 2 and for example of the type operated by a pneumatic piston cylinder assembly or of other suitable type, by means of which the carriage can be caused to slide first in the direction F of feed of the panels P and then in the opposite direction.
  • the carriage 4 At the start of each work cycle, the carriage 4 is positioned on the end of the guide 2 from which it reaches the front corner A' of the panel P travelling in the direction F, so that the carriage 4, on which the smoothing means described below are mounted, can be controlled to follow the panel to sand its front corner A' and to then allow the smoothing means to disengage from the panel and allow the actuator 6 to reverse its movement, to return the carriage 4 to the cycle start position, to operate on a subsequent panel.
  • a hook 7 is arranged on the side of the carriage 4 facing the panel P ( Fig. 5 ), able to oscillate on an ideal vertical plane, oriented with its tooth 107 facing downward and in the direction F of feed of the panels, press fitted with its stem on a shaft 8 orthogonal to the longitudinal side L of the panel P, supported rotatably by supports 9 fixed on the carriage 4 and on the end of which that projects from the opposite side of the carriage 4 ( Fig.
  • a lever 10 connected to the rod of a pneumatic piston cylinder assembly 11 the body of which is anchored to a support 12 fixed to the carriage 4.
  • the hook 7 can be taken, see also Fig. 3 , from a raised position at rest, shown with a continuous line, in which it does not in any way interfere with the panel P, to a lowered working position, shown with the dashed line and controlled by limit switch means, not shown as if necessary they can be built into the cylinder 11, in which the tooth 107 of the hook 7 is arranged with its vertical surface transverse and on the path of the front side LA of the panel P, to be coupled to the side and ensure that, also with the contribution of the linear actuator 6, the carriage 4 can follow with a precise alignment and with perfect synchronism the panel P being fed in the direction F.
  • the hook 7 is taken to the lowered working position before the side LA of the panel arrives and when the carriage 4 is in the cycle start position, the actuator 6 is already activated for movement in the direction F, with a thrust such as to balance the mass of the carriage 4 and of all the components mounted thereon, so that when the side LA of the panel touches the tooth 107 of the hook 7, the carriage 4 can be made to advance substantially drawn by the panel P, with an at least initially limited contact pressure between the tooth 107 of the hook 7 and the side LA of the panel, so as to prevent even the slightest damage to the front side LA.
  • the hook 7 When the front corner A' of the panel has been sanded, the hook 7 is raised by the cylinder 11, while in correct phase the actuator 6 decreases its thrust and, if necessary, accelerates in the direction F, so that the tooth 107 of the hook can move away from the side LA of the panel without any rubbing on the side. This condition is also guaranteed by the fact that the fulcrum 8 of the hook 7 is positioned above the panel P, so that the upward oscillation of the hook 7 takes place with simultaneous detachment of its tooth 107 from the front side LA of the panel.
  • the actuator 6 is operated to move the carriage 4 in the opposite direction to the feed path F of the panels and to return it to the useful position to start a new work cycle on a subsequent panel.
  • abrasive brush T for sanding the corner A' of the panel is press fitted onto the lower end of the shaft 113 of a vertical spindle 13 fixed with interposing of a support 114 on the distal end of an arm 14 pivoted on a vertical axis 15 and fixed on the arm, with interposing of a support 214, is an electric motor 16, which by means of the belt and toothed pulley drive 17 transmits rotation to the shaft 113 and to the brush T at the correct speed and in the correct direction.
  • the fulcrum 15 of the arm 14 is supported by a support 115 fixed on a secondary carriage 18 that by means of recirculating ball slides 19 slides on at least one rectilinear precision guide 20 fixed on the main carriage 4 and orthogonal to the guide 2 of the main carriage and the secondary carriage 18, by means of a downward facing appendix 21, is connected to the rod of a pneumatic piston cylinder assembly 22 fixed with the body to a support 23 anchored laterally to the main carriage 4. Due to the action of the cylinder 22, the arm 14, with the spindle 13 and with the abrasive brush T, can be taken in a movement perpendicular to the longitudinal side L of the panel P.
  • This movement is used so that a cam follower 24 positioned coaxially and idle on the section of shaft 113 above the abrasive brush T, can read the oblique profile (see below) of a cam 25 positioned above the longitudinal side L of the panel P, which with its longitudinal axis is parallel to the longitudinal side L and which is mounted on a guide and slide structure 26 located on the front of the main carriage 4 facing the panel P and provided with lead screw means 27 to adjust the longitudinal position of the cam 25, to adapt it with precision to the needs of the apparatus and also to allow the progressive wear on the abrasive brush T to be taken up.
  • Fig. 6 it can be seen that laterally to the support 114 of the motor 16 there is fixed a small arm 314, to which there is articulated the rod of a pneumatic piston cylinder assembly 28 articulated with the body to a support 29 fixed on the main carriage 4.
  • the assembly 28 is permanently urged in extension, with the correct pressure values, to maintain the cam follower 24 constantly in contact with the profile of the cam 25.
  • the arm 14 is initially positioned substantially parallel to the longitudinal side L of the panel and the cam follower 24 reads the initial convex section 125 of the profile of the cam 25, to arrange the working surface of the brush T in contact with correct interference with the front side LA of the panel, in front of the corner A' to be sanded and suitably distanced from the hook 7.
  • the follower is taken to read the intermediate section 225 of the profile of the cam 25, which carries the abrasive brush T to sand the whole of the extension of the curved corner A' and to be arranged on the longitudinal side L of the panel, with precise interference guaranteed by the fixed position of the cam 25 with respect to the hook 7 and by the temporary fixed anchoring of the hook to the front side LA of the panel P passing through.
  • the cam follower 24 is taken to read the last section 325 of the profile of the cam 25, with the effect of moving the abrasive brush T away from the longitudinal side L of the panel, so that after or in correct phase with raising of the hook 7, the actuator 6 can be operated to reverse the stroke of the main carriage 4 and to return the apparatus to the cycle start position, behind the sanded panel and in front of a subsequent panel and, when the panel arrives, the cylinder 22 is retracted to return the apparatus to the condition shown in Figs. 5 and 6 , with the cam follower 24 that once again reads the initial section 125 of the profile of the cam 25 and arranges the abrasive brush T, T1 in front of the front side LA of the subsequent panel.
  • the apparatus M1 as described above, and also the apparatus M2 described below, will be controlled by a respective processor 30 as shown schematically in Fig. 7 , which will receive information on the conditions of feed and on the position in space of the front and rear sides of the panel P to be sanded, by the processing unit 31, known and belonging to the conveying system of the panels P.
  • the processor 30 will also receive information 106, 111, 122, 128 from the limit switch means, not shown, associated with the cylinders 11, 22, 28 and with the actuator 6, or associated with the components operated by the cylinders and the processor 30 will also control an electro-pneumatic interface 32 that will operate the various pneumatic piston cylinder assemblies of the apparatus.
  • the processor 30 will also be equipped with a connection 33 for operation of the electric motor 16 and optionally with a connection 34 to detect through optional sensors the thrust that the hook 7, in the lowered position and in the working stroke, exerts on the front LA or rear LP side (see below) of the panel, in order to operate, in a logic and safe way, the actuator 6 that drives the main carriage 4, to ensure and maintain contact between the hook 7 and the panel P, but to prevent even the slightest damage of the surface of the sides LA and LP (see below) touched by the tooth 107 of the hook 7.
  • Optional pressure sensors useful for the object indicated above can be positioned on the tooth 107 of the hook 7 or on parts associated therewith, or can be of the type suitable to detect the degree of torsion to which the shaft 8 is subjected, or can be mounted, in the form of pressure transducers, on the cylinder 11 responsible for lifting and lowering of the hook 7, maintaining this latter in the lowered working position, to oppose the thrust exerted by the actuator means 6 and by the reaction of the panel, which tends to cause upward oscillation of the hook 7.
  • the use of an encoder, not shown, to detect the speed of the working stroke of the carriage 4 and to allow the processing unit 30 to compare and synchronize it with the feed speed of the panels P also falls within the scope of the invention.
  • An apparatus M2 shown in Fig. 8 and 9 , is responsible for smoothing the rear corner A" of the panels P, the apparatus having a structure similar and substantially symmetrical with respect to that of the apparatus M1 described above and differing from this latter due to the fact that the hook 7 and the abrasive brush T will be inserted at the back of the rear side LP of the panel passing through and that the actuator 6 will be arranged to operate the main carriage 4 so as to take the hook 7, when it is lowered, into contact with the rear side LP, with a limited impact and to maintain this contact for the whole of the working stroke of the main carriage 4, with a pressure that is adequate but always limited between the hook 7 and the rear side LP of the panel. Subsequent disengagement of the hook 7 from the rear side LP of the panel is now facilitated as raising of the hook can take place simultaneously to reversal of the motion of the actuator 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP15197127.2A 2014-12-03 2015-11-30 Vorrichtung zur automatischen glättung der abgerundeten ecken von vorwiegend flachen platten aus holz und/oder anderen materialien oder anderen hergestellten produkten Active EP3028809B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO20140683 2014-12-03

Publications (2)

Publication Number Publication Date
EP3028809A1 true EP3028809A1 (de) 2016-06-08
EP3028809B1 EP3028809B1 (de) 2017-03-01

Family

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EP15197127.2A Active EP3028809B1 (de) 2014-12-03 2015-11-30 Vorrichtung zur automatischen glättung der abgerundeten ecken von vorwiegend flachen platten aus holz und/oder anderen materialien oder anderen hergestellten produkten

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EP (1) EP3028809B1 (de)
ES (1) ES2620510T3 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106378675A (zh) * 2016-08-30 2017-02-08 安特（惠州）工业有限公司 一种对弹簧杆去毛刺的加工设备
CN106392652A (zh) * 2016-08-30 2017-02-15 安特（惠州）工业有限公司 一种对弹簧杆去毛刺及拍扁的加工设备
CN107009220A (zh) * 2017-04-28 2017-08-04 重庆宜居门业有限公司 一种木门打磨装置
CN108161662A (zh) * 2018-02-07 2018-06-15 遵义市汇川区吉美电镀有限责任公司 一种电镀打磨装置
CN108673283A (zh) * 2018-05-08 2018-10-19 韦强 竹架板去节打磨机构及其使用方法
CN109531320A (zh) * 2018-11-26 2019-03-29 鹤山市润昌电子电器有限公司 一种磨角机
CN114536147A (zh) * 2022-02-28 2022-05-27 宿迁恒信工艺品有限公司 一种木制品玩具加工用打磨装置
CN116765983A (zh) * 2023-08-24 2023-09-19 江苏鑫亿船舶装饰工程有限公司 一种附带涂覆处理的家具生产用板材平磨装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111215997B (zh) * 2020-01-20 2021-08-20 台州市黄岩硕峰工艺品股份有限公司 一种木制玩具持续性自动磨边装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293341A2 (de) 1987-05-22 1988-11-30 Tecnolegno S.R.L. Vorrichtung zum automatischen Schleifen der abgerundeten Ecken von Platten

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293341A2 (de) 1987-05-22 1988-11-30 Tecnolegno S.R.L. Vorrichtung zum automatischen Schleifen der abgerundeten Ecken von Platten

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106392652A (zh) * 2016-08-30 2017-02-15 安特（惠州）工业有限公司 一种对弹簧杆去毛刺及拍扁的加工设备
CN106378675A (zh) * 2016-08-30 2017-02-08 安特（惠州）工业有限公司 一种对弹簧杆去毛刺的加工设备
CN106378675B (zh) * 2016-08-30 2018-08-03 安特（惠州）工业有限公司 一种对弹簧杆去毛刺的加工设备
CN107009220B (zh) * 2017-04-28 2019-01-18 重庆宜居门业有限公司 一种木门打磨装置
CN107009220A (zh) * 2017-04-28 2017-08-04 重庆宜居门业有限公司 一种木门打磨装置
CN108161662A (zh) * 2018-02-07 2018-06-15 遵义市汇川区吉美电镀有限责任公司 一种电镀打磨装置
CN108673283A (zh) * 2018-05-08 2018-10-19 韦强 竹架板去节打磨机构及其使用方法
CN108673283B (zh) * 2018-05-08 2019-12-27 温州市仁爱工艺礼品制造有限公司 竹架板去节打磨机构及其使用方法
CN109531320A (zh) * 2018-11-26 2019-03-29 鹤山市润昌电子电器有限公司 一种磨角机
CN114536147A (zh) * 2022-02-28 2022-05-27 宿迁恒信工艺品有限公司 一种木制品玩具加工用打磨装置
CN114536147B (zh) * 2022-02-28 2023-01-31 宿迁恒信工艺品有限公司 一种木制品玩具加工用打磨装置
CN116765983A (zh) * 2023-08-24 2023-09-19 江苏鑫亿船舶装饰工程有限公司 一种附带涂覆处理的家具生产用板材平磨装置
CN116765983B (zh) * 2023-08-24 2023-11-03 江苏鑫亿船舶装饰工程有限公司 一种附带涂覆处理的家具生产用板材平磨装置

Also Published As

Publication number Publication date
EP3028809B1 (de) 2017-03-01
ES2620510T3 (es) 2017-06-28

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