EP3456496A1 - Verfahren und vorrichtung zur bearbeitung von profilierten mitgliedern - Google Patents

Verfahren und vorrichtung zur bearbeitung von profilierten mitgliedern Download PDF

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Publication number
EP3456496A1
EP3456496A1 EP18194740.9A EP18194740A EP3456496A1 EP 3456496 A1 EP3456496 A1 EP 3456496A1 EP 18194740 A EP18194740 A EP 18194740A EP 3456496 A1 EP3456496 A1 EP 3456496A1
Authority
EP
European Patent Office
Prior art keywords
profile
machining
configuration
support
profiles
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
EP18194740.9A
Other languages
English (en)
French (fr)
Other versions
EP3456496B1 (de
Inventor
Mattia MARCHIOTTO
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.)
Italmac Srl
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Italmac Srl
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Filing date
Publication date
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Publication of EP3456496A1 publication Critical patent/EP3456496A1/de
Application granted granted Critical
Publication of EP3456496B1 publication Critical patent/EP3456496B1/de
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Classifications

    • 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
    • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B27C5/02—Machines with table
    • B27C5/06—Arrangements for clamping or feeding work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
    • B27F1/02—Making tongues or grooves, of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
    • B27F1/02—Making tongues or grooves, of indefinite length
    • B27F1/04—Making tongues or grooves, of indefinite length along only one edge of a board
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F5/00—Slotted or mortised work
    • B27F5/02—Slotting or mortising machines tools therefor
    • B27F5/06—Slotting or mortising machines tools therefor equipped with chain cutters

Definitions

  • the present invention relates to a method and an apparatus for machining profiles.
  • the invention fits into the technical field of the production of a door or window, since it relates to the machining of profiles made of plastic material, for example polyvinylchloride, in order to form the joints necessary to assemble a frame. More precisely, it relates to an industrial machine and a working method thereof.
  • doors or windows with 90° joints visible from the inside and/or outside.
  • the need to satisfy this demand which persists due both to reasons of an aesthetic character and the need to comply with landscape/environmental constraints, has led to a quest for new techniques for machining profiles made of plastic material so as to obtain the same visual results as provided by the machining of wood.
  • a first drawback of this prior art solution is the impossibility of forming a visible 90° joint on both sides of the frame, the inside and outside, so that it is not possible to satisfy part of the market demand coming from several countries, in which current standards or a simple aesthetic choice preclude the use of frames with 45° joints.
  • a second drawback derives from the fact that a frame produced with the above-mentioned technique is exposed to adverse weather conditions and the risk of infiltrations on the side where all four joints are welded at 45°, thus inducing structural problems.
  • a further object is to provide joints better protected against infiltrations and capable of imparting greater robustness to the structure of the window or door frame.
  • the present invention is aimed at a method for machining profiles, for example for window and door frames of homes, preferably made of polyvinylchloride, comprising the steps of:
  • machining in a "female” configuration comprises performing an oblique removal of a central part of the profile head so that two external layers remain which extend outwardly beyond the oblique cut.
  • machining in the "male” configuration comprises performing a removal parallel to the longitudinal direction L of two planar layers of the profile head.
  • machining in the "male” mode comprises performing an oblique removal of the part of the profile head which has remained.
  • Every oblique removal is preferably performed along an oblique plane so as to produce a corner joint between the two oblique surfaces cut on the respective profiles, by placing the latter in contact with each other.
  • an apparatus that can be programmed to carry out two different machining operations, it is possible to be able to machine each individual component differently so as to obtain different configurations of joints between profiles.
  • the edge of the surface layer of the profile that delimits the machined surface from the non-machined surface is perpendicular to the longitudinal direction
  • the head edge of the surface layer of the profile that defines the internal face and/or the external face of the profile itself when positioned in place is likewise perpendicular to the longitudinal direction.
  • head edge means the outermost edge according to the longitudinal direction and facing the tool means.
  • the edge of the surface layer of the profile that delimits the machined surface from the non-machined surface of the "male” profile defines the 90° joint relative to the surface layer of the "female” profile which overlaps the removed layer of the "male” profile.
  • the method for machining profiles preferably comprises a step of programming a control unit by entering data relating to the type of profile to be machined. Consequently, the locking and machining steps are performed on the basis of said programming step.
  • the locking step includes a sub-step, wherein the holding means acts vertically on a central portion of the profile so as to constrain it relative to a vertical axis.
  • the locking step preferably includes a sub-step in which the holding means acts horizontally on the profile according to a direction perpendicular to the longitudinal direction of the profile, so as to define a constraint relative to a horizontal axis.
  • the locking step includes a sub-step in which the holding means acts on the end of the profile from below, in a vertical direction relative to the profile itself, during machining in the "female" configuration, in order to make the partly projecting layer of the end more stable.
  • a locking of this type allows a considerable reduction in the vibrations due to the machining to which the end of the profile is subjected, thus making it possible to obtain products machined with better precision, a fundamental parameter for obtaining a better joint.
  • the tool means preferably carries out a translation along a first portion and a first direction of movement in order to remove a first layer of the end, a vertical translation and a translation along a second portion and a second direction, parallel and opposite to said first direction of movement, in order to remove a second layer of the end and, moreover, the tool means is moved so as to perform a cut of the whole end of the profile, so that the removal takes place according to an oblique machining direction relative to the longitudinal direction.
  • the oblique cut of the male profile takes place independently of the surface removal of the outermost layers.
  • the tool means moves along at least one direction of movement in order to remove the central portion of the end of the profile, so that the removal takes place according to an oblique machining direction relative to the longitudinal direction of the profile itself.
  • the positioning step includes positioning two profiles arranged specularly on the same support, wherein the sub-step of "male” or “female” machining is carried out on both of the two profiles by means of at least a single movement which involves both, carried out by the tool means.
  • the machining step comprises both the sub-step of machining a first profile on a first support in the "male” configuration, and the sub-step of machining a second profile on a second support in the "female” configuration.
  • the present invention further relates to an apparatus for machining profiles which comprises at least one support on which to position at least one profile held in position by holding means.
  • the profile is positioned according to a longitudinal direction thereof, perpendicular to a direction of movement of a mobile tool means capable of machining an end of said profile.
  • the apparatus is provided with a control unit, operatively connected to the tool means and programmed to select the machining configuration to be implemented between two possible configurations:
  • the control unit is preferably programmed to activate the holding means on the basis of the machining to be carried out and the data relating to the profile to be machined.
  • the control unit in fact, is advantageously connected to said holding means.
  • the holding means comprises a member, preferably a plate, movable from and towards the profile, which is interposed between the support and the plate.
  • the plate is moved by a movement means passing across said support via a hole and movable along a vertical direction perpendicular to the support.
  • the movement means preferably comprises a macro adjustment system configured to bring about a translation of the plate by a predefined extent and a micro adjustment system configured to bring about a translation of the plate by a smaller extent compared to that of the macro adjustment.
  • the macro adjustment system enables the plate to be moved along nearly the totality of the distance that separates it from the profile, which it must constrain rapidly.
  • the micro adjustment for example by means of a stepper motor, takes place at the end of the macro adjustment and allows the plate to be brought near the profile with precision, and press the latter against the support with a force such as to keep it constrained without damaging it.
  • the holding means comprises a suction cup inserted through an opening of the support, where the profile is positioned, in order to retain the partly projecting layer of the end of the profile, in proximity to the support, during the sub-step of machining in the "female" configuration.
  • the opening is preferably shaped as an elongate slot extending according to a direction of movement, even more preferably if perpendicular to longitudinal direction of the profile, so that, advantageously, the holding means abuts in different positions on the basis of the profile to be machined.
  • the support has a passage zone obtained by virtue of the absence of material below the profile, adapted for the passage of the tool means below the end of the profile during the machining step in the "male" configuration.
  • a passage zone obtained by virtue of the absence of material below the profile, adapted for the passage of the tool means below the end of the profile during the machining step in the "male" configuration.
  • the present invention is aimed at the technical field of the production of a door or window frame made of plastic material, preferably polyvinylchloride, and, more specifically, a method for machining profiles and an apparatus capable of being produced by means of that method.
  • the method for machining profiles comprises the following operating steps:
  • each end 1a of a profile 1 can be machined in two different configurations, which are complementary to each other, in order to define a corner joint of a door or window: the "male” configuration and the “female” configuration.
  • a part of a central portion 1b is removed from the end 1a machined in the "female" configuration by machining along the oblique direction with the milling cutter.
  • the oblique direction is preferably inclined by 45° between the longitudinal direction L and the direction of movement T. In this manner, a portion of plastic material having a substantially triangular shape is removed from the end 1a, whereas the surface layers of the profile 1 (having a thickness of only a few millimetres) do not undergo any alteration.
  • the edge that delimits the machined portion from the non-machined surface is perpendicular to the longitudinal direction L in the case of the surface layers, left unaltered, and inclined by 45° relative to the direction of movement T and the longitudinal direction L in the case of the central portion 1b.
  • the end 1a machined in the "male" configuration is substantially subjected to two different machining operations, which can be performed in any order whatsoever.
  • Two surface planar layers 1e, 1f of a thickness equal to that of the surface layers left unaltered in the "female" configuration are removed from the end 1a and, moreover, part of the end 1a itself is removed along the oblique direction, more precisely inclined by an angle of 45°, in a manner that mirrors the machining in the "female” configuration so as to obtain a central terminal of a substantially triangular form.
  • the end 1a machined in the "male” configuration is complementary to an end in the "female” configuration, since the central terminal of the profile 1 in the "male” configuration can be housed in a position corresponding to that of the central portion 1b of the profile in the "female” configuration, in which a suitable housing has been created beforehand.
  • the 45° inclination present on the central portion 1b and on the central terminal of two profiles 1 enables an effective weld for the formation of the door or window frame.
  • the surface layers left unaltered in the machining in the "female" configuration lie above the end 1a of the profile 1 machined in the "male” configuration, so that door or window frames made of plastic material will also show a 90° joint to an outside operator, usually obtained only with door or window frames made of wood.
  • the above-described method for machining profiles makes it possible to assemble a door or window wherein the polyvinylchloride profiles 1 are joined to one another by overlapping oblique surfaces, preferably inclined by 45°, but at the same time they are able to show an outside operator a 90° joint, usually made only on wood door or window frames, by virtue of the overlapping of the unaltered surface layers of a profile 1 (machined in the "female" configuration) on the end 1a of the adjacent profile 1 (machined in the "male” configuration).
  • the method for machining profiles preferably includes the possibility of positioning two profiles specularly on the same support 2, both arranged along a longitudinal direction L, to which the same machining sub-step is applied, i.e. the "male” configuration or the “female” configuration, by moving the tool means 6 with at least a single movement.
  • this method can comprise both sub-steps during the same production process, i.e. both the sub-step in the "male” configuration on at least a first profile on a first support, and the sub-step in the "female” configuration on at least a second profile on a second support 2.
  • the machining step envisages that the tool means 6 is capable of carrying out different movements for machining the end 1a of the profile 1 in different modes.
  • the method comprises a programming step, wherein a control unit 7 is configured by entering data relating to the profile 1 to be machined.
  • a control unit 7 is configured by entering data relating to the profile 1 to be machined.
  • the entry of data relating to the profile 1 determines in what way the locking and machining steps are performed by the dedicated means.
  • each profile is associated with a code, for example a barcode or QR code, identifying its characteristics and the type of locking and machining that must be applied.
  • a reader operatively connected to the control unit 7 is capable of detecting this code and transmitting the data relating to the profile 1 to the control unit 7, which re-processes them in order to control the holding means 3, 4, 5 and the tool means 6. Consequently, the locking step comprises the following sub-steps, which are performed taking into account the data relating to the profile 1 which are collected by the control unit 7:
  • the first holding means 3, i.e. the clamps, which vertically constrain the profile 1 are activated and then the second holding means 4, i.e. the lateral pistons, are activated in order to horizontally lock the profile 1.
  • the last holding means 5, i.e. the suction cups are activated only in the case of machining in the "female" configuration, in order to reduce the vibrations deriving from the machining to which the partly projecting layer of the end 1a of the profile 1 is subjected.
  • the machining step can take place according to two configurations: a "male” configuration and a “female” configuration.
  • the tool means 6 carries out two sub-steps on the end 1a of the profile 1:
  • the tool means 6 moves to remove the central portion 1b of the end 1a according to an oblique machining direction relative to the longitudinal direction L.
  • the two machining configurations are thus capable of shaping the ends of two different profiles, for example an upright and a cross member, according to two configurations that are different but complementary to each other. Once they are abutted, these machined ends are welded with a traditional technique, but on the outside they show the right-angled joint sought.
  • the subject matter of the present invention also relates to an apparatus 100 for the production of profiles capable of implementing the method disclosed above.
  • such an apparatus generically indicated with the number 100, comprises:
  • the apparatus 100 further comprises a control unit 7, operatively connected to the tool means 6, and programmed to move it so as to determine the machining configuration to be implemented between:
  • the control unit 7 is preferably programmed to activate the holding means 3, 4, 5 on the basis of the machining to be performed and a series of recorded data relating to the profile to be machined. These holding means 3, 4, 5, optionally, are operatively connected to the control unit 7.
  • the holding means 3 is a clamp that is vertically movable downwards relative to the support 2.
  • the profile 1, interposed between the clamp 3 and the support 2, is locked in its central portion by a member 3a, preferably a plate, which is connected to a movable, vertically extending movement means 3b that passes through an opening 3c in the support 2.
  • two clamps 3 are also arranged specularly in the centre thereof and relative to a vertical wall 3d so as to form a "T", even if the two plates 3a operate independently of each other, each plate being connected to movement means 3b.
  • the movement means 3b consists of motorised pistons whose actuation is controlled by the control unit 7.
  • the control unit 7 is configured to move the member 3a of the holding means 3 using the movement means 3b on the basis of the profile 1 that must be machined, so that the profile 1 is constrained to the support 2 by pressing the member 3a so as to keep it stationary during the machining step without, however, damaging it.
  • the movement means 3b translates the member 3a vertically towards the profile 1, first with a macro adjustment system and then with a micro adjustment system.
  • the macro adjustment enables most of the distance comprised between the member 3a and the profile 1 to be covered in a short time, so as to bring the member 3a as near as possible to the profile 1, whilst the micro adjustment enables a precise positioning of the member 3a relative to the profile 1, so as to constrain the latter with a suitable pressing force that will not damage it, thanks, for example, to the use of a controlled stepper motor of the control unit 7 operatively connected to the member 3a.
  • the two profiles are aligned by virtue of two counter profiles 9, placed laterally to the clamps 3a and projecting farther relative to the vertical wall 3d so as to define alignment abutments for positioning the profiles along the longitudinal direction L, perpendicular to the direction of movement T of the tool means 6.
  • the holding means 5 comprises a suction cup 5a inserted through an opening 5b of the support 2, at the end 1a of the profile 1, so as to retain the partly projecting layer of the end 1a during said sub-step of machining in the "female" configuration.
  • the opening 5b through which the suction cup 5a is inserted is shaped as an elongate slot.
  • This opening 5b extends according to a direction of movement, preferably perpendicular to said longitudinal direction L in which the profile 1 is disposed, so that the suction cup 5a, movable inside this opening 5b, can abut in different positions on the basis of the type of profile to be machined in the "female" configuration.
  • This suction cup 5a in fact, is located on the same plane as the support 2 and is capable of carrying out movements and the function of locking the projecting layer of the end 1a by virtue of the holding means 5 to which it is connected, which, operatively connected to the control unit 7, can move it and activate it on the basis of the data recorded in the step that precedes the locking.
  • a passage zone has been obtained on the structure of the support 2 by virtue of the absence of material in the zone located below said profile 1.
  • Such absence of material defines an "L"-shaped recessed seat 8 suitable for the passage of the tool means 6 below the end 1a of the profile 1 during the machining step in the "male" configuration.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling Processes (AREA)
EP18194740.9A 2017-09-19 2018-09-17 Verfahren und vorrichtung zur bearbeitung von profilierten mitgliedern Active EP3456496B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000104522A IT201700104522A1 (it) 2017-09-19 2017-09-19 Metodo per la lavorazione di profili e relativo apparato

Publications (2)

Publication Number Publication Date
EP3456496A1 true EP3456496A1 (de) 2019-03-20
EP3456496B1 EP3456496B1 (de) 2020-09-02

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EP18194740.9A Active EP3456496B1 (de) 2017-09-19 2018-09-17 Verfahren und vorrichtung zur bearbeitung von profilierten mitgliedern

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EP (1) EP3456496B1 (de)
IT (1) IT201700104522A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102806A1 (de) * 1982-08-24 1984-03-14 Boardman, Susan Mary Verfahren zum Profilieren der Enden von Brettern und Maschine zur Durchführung des Verfahrens
DE3815101A1 (de) * 1988-05-04 1989-11-16 Wilhelm Hirsch Holzbearbeitung Holzbearbeitungsmaschine
CN2880429Y (zh) * 2006-02-13 2007-03-21 胡永雄 全自动榫头机
CN106335111A (zh) * 2016-11-16 2017-01-18 东阳市新和电子机械有限公司 一种全方位加工的榫卯机及其实现方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102806A1 (de) * 1982-08-24 1984-03-14 Boardman, Susan Mary Verfahren zum Profilieren der Enden von Brettern und Maschine zur Durchführung des Verfahrens
DE3815101A1 (de) * 1988-05-04 1989-11-16 Wilhelm Hirsch Holzbearbeitung Holzbearbeitungsmaschine
CN2880429Y (zh) * 2006-02-13 2007-03-21 胡永雄 全自动榫头机
CN106335111A (zh) * 2016-11-16 2017-01-18 东阳市新和电子机械有限公司 一种全方位加工的榫卯机及其实现方法

Also Published As

Publication number Publication date
EP3456496B1 (de) 2020-09-02
IT201700104522A1 (it) 2019-03-19

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