EP2862644B1 - Machine automatique et procédé automatique pour le cintrage des profilés d'écartement de calandrage pour obtenir des trames d'espacement pour une unité de vitrage isolant - Google Patents

Machine automatique et procédé automatique pour le cintrage des profilés d'écartement de calandrage pour obtenir des trames d'espacement pour une unité de vitrage isolant Download PDF

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Publication number
EP2862644B1
EP2862644B1 EP14189153.1A EP14189153A EP2862644B1 EP 2862644 B1 EP2862644 B1 EP 2862644B1 EP 14189153 A EP14189153 A EP 14189153A EP 2862644 B1 EP2862644 B1 EP 2862644B1
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EP
European Patent Office
Prior art keywords
spacer
frame
bending
profile
synchronous
Prior art date
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EP14189153.1A
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German (de)
English (en)
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EP2862644A1 (fr
Inventor
Fortunato Vianello
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Forel SpA
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Forel SpA
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Priority to EP21181893.5A priority Critical patent/EP3912748A1/fr
Publication of EP2862644A1 publication Critical patent/EP2862644A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/74—Making other particular articles frames for openings, e.g. for windows, doors, handbags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673—Assembling the units
    • E06B3/67304—Preparing rigid spacer members before assembly
    • E06B3/67308—Making spacer frames, e.g. by bending or assembling straight sections
    • E06B3/67313—Making spacer frames, e.g. by bending or assembling straight sections by bending

Definitions

  • the present invention relates to an automatic machine and an automatic method for bending and calendering spacer profiles to obtain spacer frames used in the composition of an insulating glazing unit.
  • the invention relates to the means for retaining and guiding the frame portion downstream of the bending/calendering head, which is subject to gravity, inertia and friction actions, which are not secondary in relation to the negligible resistance capacity of the profile. Retention and guiding occur synchronously with the operations for the production of the frame. This makes it possible to increase the bending and calendering rate so as to increase the productivity of the machine and of the method, and also allows improving the quality of the finished frame in terms of geometric and aesthetic regularity.
  • the spacer profile For a better understanding of the configuration and function of the spacer frame and of its semifinished component that originates it, the spacer profile, some concepts relating to the spacer profile and to the final product, i.e., the double-glazing unit, are summarized hereafter, assuming that the subsequent use of the double-glazing unit, i.e., as a component of the door or window or as an element of curtain walling and of structural glazing facades, is known.
  • the double-glazing unit is constituted by the composition of two or more glass sheets separated by one or more hollow spacer frames that are micro-perforated on the face that is directed inward; the spacer frames are arranged in proximity to the perimeter of the glass sheets and contain in their hollow part hygroscopic material, and the chamber (or chambers) delimited by the glass sheets and by the frame (frames) can contain air or a gas other than air or mixtures of gases other than air that give the double-glazing unit particular properties, for example thermally insulating and/or soundproofing properties.
  • the joining between the glass sheets and the frame (or frames) is obtained typically by means of two levels of sealing, the first one having the function of providing a hermetic seal against the leakage of the gas and against the entry of environmental humidity and affecting the lateral surfaces of the frame and the part of the adjacent glass sheets, the second one having the function of providing cohesion among the components (glass sheets and spacer frame/frames) and mechanical strength of the junction between them and affecting the compartment constituted by the outer surface of the frame (frames), including the variously shaped part for blending with the side walls, and from the faces of the glass sheets to the edge thereof, against stresses of a mechanical nature (wind load, snow load, etc.) or of a thermal kind (exposure to temperature variation cycles between the external part and the internal part of the building).
  • Figures 1A, 1B, 1C , ID and IE show some solutions relating to this perimetric junction of the double-glazing unit.
  • double-glazing units In order to complete the summary introduction relating to double-glazing units, it is convenient to delve more specifically into the configuration of the glass sheets, not so much in their possible isolated use but most of all as a function of their use in combination with the spacer frame to constitute the double-glazing unit, summarizing hereafter some concepts related to the semifinished components themselves, i.e., the glass sheets and the spacer frame, and the final product, i.e., the double-glazing unit.
  • the subsequent use of the double-glazing unit i.e., as a component of doors or windows or of curtain walling or of structural glazing facades, as has been mentioned already, is known to the person skilled in the art and is not discussed here in detail.
  • the double-glazing unit is constituted typically by two or more glass sheets 1001, 1002, etc., mutually separated by one or more spacer frames 1003, etc., which are internally hollow and are micro-perforated on the face that is directed toward the inside of the chamber.
  • the spacer frames 1003 contain, in their hollow part, hygroscopic material 1008, the purpose of which is to absorb humidity.
  • the chamber (or chambers) 1007 (or onward) delimited by the glass sheets 1001 and 1002 (or onward) and by the frame 1003 (or onward) can contain air or gas or mixtures of gas injected therein, which give the double-glazing unit particular properties, for example thermally insulating and soundproofing properties.
  • spacer profile 1003 which has an essentially rectangular cross-section or a rectangular cross-section with two recesses and is made of organic material (by way of non-exhaustive example: silicone and EPDM) which is expanded and flexible and embeds in its mass the hygroscopic material; however, this solution, despite being practical from the point of view of automation in the manufacture of the insulating glazing unit since the operation of manual laying of the spacer frame is eliminated and despite being valid from the point of view of thermal insulation, since it is made of low-conductivity material, has some drawbacks.
  • the main drawback relates to the preponderance of organic material in its composition and therefore to the mediocre barrier function both for retention of the gas that is present in the chamber and for the lack of penetration of humidity from the external environment toward the chamber, which would entail condensation inside the chamber.
  • Additional drawbacks are: the complexity in the change of width and colors, the lack of adhesion with some types of sealant and, last but not least, the limitation of the maximum dimensions of the double-glazing unit, which excludes its use in structural glazing. Accordingly, the more traditional solution of the rigid frame instead is regaining popularity.
  • the junction between the glass sheets and the frame is obtained by means of two levels of sealing: the first seal 1004 is used to provide a hermetic closure and affects the lateral surfaces of the frame 1003 and the portions adjacent thereto of the glass sheets 1001, 1002 and has a thermoplastic behavior; the second seal 1005 affects the compartment constituted by the external surface of the frame and the faces of the glass sheets 1001, 1002 up to the edge thereof and has the function of providing cohesion among the components, once the sealant has been catalyzed, i.e., after a few hours, at the same time maintaining the mechanical strength of the junction between them.
  • said spacer is pre-coated on a portion of its sides with an acrylic adhesive 1006, which has, as its sole but not significant advantage, an immediate coupling with the walls of the glass sheets, so as to allow the handling of the double-glazing unit without waiting for catalysis of the two-component sealants.
  • Figures 1A, 1B, 1C , ID and IE show five of the many possible sectional views of double-glazing unit configurations, of which only the first one has been commented. However, it is straightforward to extend the description given above to the configurations of Figures 1B, 1C , ID, IE, where either multiple frames or offset glass sheets or laminated glass sheets are provided.
  • the sun represents schematically the external environment of the building in which the double-glazing units are installed, while the interior of the building is represented schematically by a radiator.
  • the glass sheets used in the composition of the double-glazing unit can have different shapes as a function of their use; for example, the external glass sheet 1001 (with respect to the building) can be normal or selective or reflective (in order to limit thermal intake during summer months) and it can also be laminated/armored (for intrusion prevention/vandalism prevention functions) or it can be laminated/tempered (for safety functions) and can also be combined, for example reflective and laminated, as well as offset with respect to the internal glass sheet or the intermediate glass sheet.
  • the external glass sheet 1001 can be normal or selective or reflective (in order to limit thermal intake during summer months) and it can also be laminated/armored (for intrusion prevention/vandalism prevention functions) or it can be laminated/tempered (for safety functions) and can also be combined, for example reflective and laminated, as well as offset with respect to the internal glass sheet or the intermediate glass sheet.
  • the internal glass sheet 1002 (with respect to the building) can be normal or of the low-emissivity type (in order to limit the dispersion of heat during winter months) and it can also be laminated/tempered (for safety functions) and can also be combined, for example low-emissivity and laminated.
  • the properties related to thermal insulation both under winter conditions (for which low-emissivity glass is indicated) and under summer conditions (for which selective glass is indicated), as well as the properties related to light transmission, are obtained by depositions of metals and metallic oxides, generally of the multilayer type, with a total thickness in the order of hundreds of angstroms, which must however be removed in the perimetric portions of interaction with the sealants.
  • EP1285708B1 teach or anticipate nothing regarding the inventive concept that is the subject of the present application, and indeed the teaching is even misleading, i.e., it is to increase the sophistication of the bending tool in order to obtain an aesthetically acceptable bend instead of introducing a stable movement of the profile as it becomes a frame and lies downstream of the bending tool, said movement rather having a basic role both from the physical point of view and from the point of view of productivity with respect to the execution of the bend entrusted only to the bending head.
  • US 5 136 871 A discloses an apparatus and a method for bending hollow profile strips into spacer frames for insulating glass panes, having a combination of elements as set forth in the pre-characterizing portion of the appended claims 1 and 6.
  • the aim of the present invention is therefore to solve the described technical problems, eliminating all the drawbacks of the cited background art and thus providing a method and a machine that allow bending and calendering of spacer profiles for double-glazing units, obtaining a valuable quality of the bent or calendered part and increasing productivity (to set a term of comparison, from the currently common 120 frames/hour with rectangular dimensions of 1000 x 750 mm to approximately 200 frames/hour).
  • the series 100 has been assigned to the new part of the machine, i.e., to the content of the invention that consists of the guiding system (support and movement) of the spacer frame during the forming thereof, which is adapted to compensate the loads produced by the force of gravity and by inertial and friction reactions; where subscripts have been used, a stands for forward and p stands for rear, the reference being the position of the operator on the front part of the machine.
  • the numeral 10 designates the surface of the machine for the sliding of the spacer frame 2 during its forming step, which is also the arrangement surface of the finished frame 3, 3', 3", where it stays while waiting to be unloaded (predominantly manually but possibly also automatically).
  • This surface is typically inclined with respect to the vertical plane, generally by 45°, as a condition to compensate for the actions of gravity and friction that act on the frame 2 during the forming of said frame 2 and that would be respectively: maximum and nil if the surface had a vertical arrangement, nil and maximum if the surface had a horizontal arrangement.
  • the reference numeral 11 designates the electrical panel (located below the sliding surface 10) which contains, in addition to the electrical components, also the hardware of the logic part, i.e., the PLC (Programmable Logic Controller) and the PC (Personal Computer).
  • the PLC Process Control
  • PC Personal Computer
  • the reference numeral 12 designates the operator interface, which is constituted by a touchscreen monitor and a keyboard.
  • the reference numeral 13 designates the protective structures, be they of the type of mechanical screens or optical barriers or laser barriers that can be configured according to the region to be protected or electrically sensitive mats etc., particular attention being devoted not only to the functional, economic and ergonomic aspects that are typical of the present invention but also to accident-prevention aspects.
  • the numbers starting with 1001 designate the main components of the double-glazing unit, as seen in the peripheral junction according to Figure 1A , where the main component is the spacer frame 4, although it is renamed 1003 in the configuration of the junction for the sake of uniformity with the other components.
  • the description that follows refers to an arrangement of the machine in which the magazine 200 of the spacer profiles 1 is arranged on the left and the working surface 10 of the spacer frame 2 and of arrangement of the finished spacer frame 3, 3', 3" is arranged on the right, as shown in the figures. It goes without saying that the condition might be mirror-symmetrical as a function of factory layout requirements and would be supported by it, but the description would be adapted to the different orientation.
  • the conveyor/feeder in particular, the synchronous conveyor belts 301a, 301p with continuous action, but a carriage provided with clamps having an intermittent and bidirectional action might likewise be used
  • the method and the mechanisms operate as follows depending on the final type, i. e. one of the alternatives 3, 3', 3".
  • Type 3 case (rectangular frame, i.e., shaped with four right angles, including therein therefore the particular case of a square frame): the profile 1, if inserted for the first time, is guided, through the belt feeder 301a, 301p, to a reference position identified by a sensor, slightly upstream of which a cutter end-faces it in order to establish the zero position (this operation will not be repeated in the continuation of the production of frames having the same profile type, since the profile can be considered as having an unlimited length since the magazine 200 performs, as is known, the automatic joining of subsequent profiles by inserting a mechanical connector in the tailing. and leading cavities of the spacer profiles 1, generally with a length of 6 m).
  • the profile 1 is advanced between the jaws 401a, 401p by means of the synchronous action of the feeder belts 301a, 301p, until it passes beyond the position of the bending punch 402 (understood as the position where the punch is successively lowered until it interferes with the inside curve of the profile 1) by a first preset length that can be set as a data item.
  • the jaws 401a, 401p close against the side walls of the profile, maintaining in any case a slight play, the bending punch 402 descends and the bending lever 403 performs a rotation, the axis of which coincides, except for adjustments for the proper execution of the bending action, with the contact line between the punch 402 and the inside curve of the profile 1, this rotation measuring 90° plus or minus a second preset degree that is constituted by an input data item adapted to obtain a precise bending angle of 90° by taking into account the elastic return of said profile 1 (typically the rotation requires a phase adjustment of a few degrees with respect to 90° as a function of the type of profile).
  • the punch 402 returns to the inactive position, the bending lever 403 returns to the inactive position and the jaws 401a, 401p at first tighten further in order to calibrate the width of the profile 1 and then reopen. Then, by synchronous action of the feeder belts 301a, 301p, the profile 1 is advanced by a distance that is equal to the length of the first complete side of the rectangle (preferably but not necessarily the shorter one), and then the succession of the actions of the mechanisms (listed in a complete sequence which corresponds to the above description) 401a, 401p, 402, 403, 403, 402, 401a, 401p, 401a, 401p is repeated to conclude the second bending.
  • Type 3' case (frame shaped with at least two angles that are different from a right angle, i.e., different from 90°): the progression of the steps and of the mechanisms reproduces what has been described in the above case, but the oscillation angle (i.e., the angle of the active stroke and of the return stroke to the inactive position) of the bending lever 403 and the quantity of operations vary, since they are parameters as a function of the geometry of the frame 3' having a polygonal shape (from the regular or irregular triangle condition, with three sides and three angles, to the regular or irregular polygon condition, with n sides and n corners).
  • Type 3 case frame containing at least one curvilinear part: for the non-curvilinear parts, what has been described for the above two cases applies; for the curvilinear parts, in summary (the detail would be more complex, since it would be equipped also with the logic, in any case known, on pre-bending, since it is variable depending on the shape of the frame) the principle related to the cycle and the mechanisms is as follows.
  • the bending lever 403 performs a pre-bending of finite extent, while the punch 402 contrasts the inside curve of the profile 1, then said lever remains in a stationary position that is proximate or corresponds to the pre-bending end position, the punch 402 detaches slightly from the inside curve of the profile 1 to avoid damaging it in the subsequent step, and the feeder belts 301a, 301p intervene so that the profile 1, by sliding with its inside curve below the punch 402 and with its outside curve above the bending lever 403, undergoes a calendering operation.
  • the parameters of angular placement of the bending lever 403 and of extent of the stroke of the profile 1 pushed by the feeder belts 301a, 301p determine the radius and breadth of the curvilinear part of the frame 3"; these parameters, which are stored in a database of the machine, are acquired automatically by the software of the machine as a function of the inputs that describe the shapes and dimensions of the finished frames 3".
  • the following is the mode of operation and the following are the components of the machine that intervene so that the part of the frame 2 that is formed progressively is supported and guided, by means of a device that hereinafter will be referred to as a support, downstream of the bending/calendering head in order to contrast the gravitational, inertial and friction actions to which the frame 2 is subjected during the forming thereof, so as to improve its execution both in terms of quality and in terms of production.
  • Types 3 and 3' case The description is merged for the two types, since a differentiated specific description has already been provided for the known part of the method and of the mechanisms and substantially the distinction relates only to the succession of the bends and of the sides of the polygon, which can be other than four, and the degrees of the bending angles, which can be partly 90° and partly different from 90° or all different from 90°.
  • the support 110 progresses in its coupling position with the frame 2 following, with a movement of the polar type (r, ⁇ ), the path followed by the point that is shared with the side of the frame 2, which in Figure 8 is to be understood as being on the first short side (i.e., on the side directly behind the first preset bend), whereas for orientability in tune with the orientation of the side of the frame 2 it is the frame 2 itself that actuates the angular adjustment p of the support 110, since the support is free (with spring-loaded return when it is in the cycle start position).
  • the support 110 moves to the position B, at a distance r from the center of rotation of the bending lever, said distance r being established by the process software as a function of the dimensions of the side of the frame 2 that is affected by the bending and waits, in order to couple thereto, for the arrival and placement of the profile 1 that has already been transformed into a frame portion 2, being provided with the first bend of limited extent according to the first preset data item defined in the description of the background art.
  • the support 110 moves, generating an angle ⁇ of 90° (plus or minus the value of the second preset) in order to reach the position C, while with respect to itself it performs an angular rotation equal to p, which is actuated by the portion of the frame 2, since the support 110 is free with respect to the arm 101 and has low friction and inertia and high elasticity.
  • the support 110 passes from position C to position D due to the actuation steps that operate in a concatenated manner and relate to the rotational axis ⁇ and to the radial axis r in a further concatenation with the synchronous longitudinal axis performed by the conveyor 300. It is superfluous to repeat the description related to the subsequent paths that bring the support 110 to positions E F, G, H. Broken lines show the position of the frame 2 during the rotation step, where the progression of the rotation p of the support 110 is indicated.
  • FIG. 5 shows an axonometric view from the plane 10 toward the operator, where the unnumbered part comprised between the reduction unit 103 and the bracket 104 constitutes the bracketing to the known profile bending machine, said bracketing being adjusted so as to make the rotation axis ⁇ of the arm 101 coincide with the rotation axis ⁇ of the bending lever 403.
  • the radial axis r is actuated by the synchronous motor 108, which acts by means of the reduction unit 109 and the sprocket 107 on the toothed belt transmission 105 guided by the free sprocket 106, said belt being coupled to the carriage that bears the support 110. All this always occurs in concatenation with the longitudinal synchronous axis provided by the feeder 300 and with the rotational synchronous axis, also referred to as ⁇ , actuated by the bending lever 403, which are obtained with synchronous motors and transmission components that are all known.
  • the numeral 110 designates the support as a whole
  • the numeral 111 designates the rotation axis about which the part of the support 110 that is free performs the angular stroke p as actuated by the portion of the frame 2 that is coupled to said support 110
  • the numeral 112 designates the spring of the spiral type that is wound on the drums 113 and 114 and, upon uncoupling from the frame 2, returns the clamps for coupling the support 110/frame 2 to the inactive position
  • the numeral 115 designates the group of free wheels that allow the support 110 to glide along the arm 101 of the device according to the invention
  • the numeral 116 designates the clamp that couples the support 110 to the transmission belt 105 for the stroke thereof along the synchronous radial axis r
  • Type 3' case frame containing at least one curvilinear part.
  • Figure 9 speaks for itself if one reads it with the comments already developed for Figure 8 ; it is sufficient to add that the process software optimizes the initial and final positions of the processing of the frame 3' so the coupling between the support 110 and the frame 2 occurs in a position in which the frame 2 is rectilinear.
  • the present invention is susceptible of numerous constructive variations (with respect to what can be deduced from the drawings, the details of which are evident and self-explanatory, and from the description), all of which are within the scope of equivalence with the inventive concept; thus, for example, the mechanical solutions for the translation of the spacer profile 1, which can be of the slider type instead of the belt type, the actuation means, which can be electrical, electrical-electronic, pneumatic, hydraulic and/or combined, etc., the control means, which can be electronic or fluidic and/or combined, etc.
  • the constructive details may be replaced with other technically equivalent ones.
  • the materials and the dimensions may be any according to the requirements in particular arising from the dimensions, shapes and types of the spacer profiles 1 and of the finished spacer frames 3, 3', 3".
  • the devices as described that actuate the movement of the support 110 may also perform alternative methods, for example the method of activating themselves by coupling in each instance with the part of the frame 2 that is arranged horizontally downstream of the bending head 400 after the feeder 300 has advanced the profile 1 and before the bending head performs the bending.
  • this method is not as effective as the one described, it may be necessary, for example if the extensions of some sides of the frame 2 do not allow retention during the subsequent feeding due to a limitation of the stroke r of the support 110 on the arm 101.
  • the axis 111 with rotation p of the support 110 described as free and actuated by the portion of the frame 2 being coupled may instead be performed by a synchronous actuator.
  • the r/ ⁇ polar system might be replaced by a Cartesian x/y system.
  • Figure 10 The insertion of the present invention in the production line of the double-glazing unit 5 is shown in Figure 10 (shown in plan view), which includes the machine downstream of the profile bending machine, i.e., the desiccant filler for the insertion of the hygroscopic material 1008 in the cavity of the spacer frame 4, 4', 4", and the additional machine for spreading the butyl sealant 1004 on the sides of said spacer frame, as an evident confirmation of widespread industrial application.
  • the profile bending machine i.e., the desiccant filler for the insertion of the hygroscopic material 1008 in the cavity of the spacer frame 4, 4', 4"
  • the additional machine for spreading the butyl sealant 1004 on the sides of said spacer frame

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Claims (10)

  1. Machine automatique pour plier et/ou calandrer des profilés d'écartement (1) destinés à former des cadres d'écartement (4, 4', 4") pour une unité de vitrage isolant (5) composée : d'un chariot ou d'un tapis d'alimentation (300) pour le mouvement synchrone du profilé d'écartement (1) en amont d'une tête de pliage (400) ; d'une tête de pliage (400) composée d'une matrice constituée de mâchoires (401a, 401p) qui sont réglables en fonction de la largeur du profilé d'écartement (1) et d'un poinçon (402) déplaçable vers la courbe intérieure dudit profilé ; d'un levier de pliage (403) directement en aval du poinçon (402) qui est pourvu d'un mouvement de rotation synchrone (ω); l'opération coordonnée de tous ces mécanismes actionnant le pliage et/ou le calandrage des profilés d'écartement, caractérisée en ce qu'en aval de la tête de pliage (400) est disposé un mécanisme (100) qui s'accouple avec et retient la partie initiale (2) du cadre d'écartement (3, 3', 3"), configurée pour supporter ladite partie initiale (2) et guider de manière mobile ladite partie initiale (2) pendant toutes les étapes d'opération de pliage et/ou de calandrage le long d'une trajectoire qui est synchrone avec la position géométrique décrite par ladite partie initiale (2) du cadre d'écartement pendant la formation du cadre d'écartement (3, 3', 3") effectuée par le dispositif d'alimentation (300) et par la tête de pliage (400).
  2. Machine selon la revendication 1, caractérisée en ce que le mécanisme (100) est composé d'un bras (101) qui a un mouvement de rotation synchrone, dont l'axe de rotation (ω) est identifié dans le même axe de rotation (ω) du levier de pliage (403) et dont l'actionnement est réalisé au moyen d'un moteur synchrone (102), d'une unité de réduction (103) sur l'arbre de sortie de laquelle est clavetée un support (104) qui a la fonction d'un moyeu qui retient le bras (101), ledit bras (101) étant pourvu d'un chariot/support (110), qui peut coulisser au moyen des roues (115), est déplacé au moyen d'une courroie dentée (105) guidée sur un pignon libre (106) et est actionné par un pignon d'entraînement (107) actionné par un moteur synchrone (108) au moyen d'une unité de réduction (109), une pince étant disposée sur ledit chariot/support (110) et étant composée d'une mâchoire fixe (117f) et une mâchoire rotative (117g) dont la commande d'ouverture et de fermeture est activée par un actionneur pneumatique rotatif (118), ladite pince étant libre sur un axe de rotation (111 = r) obtenu avec un palier (120) et étant ramenée à sa position zéro au moyen d'un mécanisme composé d'un ressort spiral (112) enroulé sur les tambours (113 et 114).
  3. Machine selon les revendications 1 et 2, caractérisée en ce que le mécanisme (100) ne maintient pas l'accouplement avec la partie initiale (2) du cadre d'écartement tout au long du processus de formation du cadre (3, 3', 3") mais est désaccouplé avant que le levier de pliage (403) n'effectue le pliage et les réalignements ultérieurs et est réaccouplé avec la partie du nouveau côté après que le bras (101) ait été déplacé dans une position angulaire horizontale (ω = 0).
  4. Machine selon une ou plusieurs des revendications précédentes, caractérisée en ce que les mécanismes qui permettent la rotation libre des mâchoires (117f, 117g) autour de l'axe (111) avec une course r ont un faible frottement et une inertie et une élasticité élevée, de sorte que le cadre (2), composé d'un profil à faible résistance (1), peut commander la rotation desdites mâchoires (117f, 117g) autour de r.
  5. Machine selon une ou plusieurs des revendications précédentes, caractérisée en ce que l'axe (111) n'est pas libre mais est actionné par un actionneur synchrone qui commande l'étape r sur la base de l'orientation que la partie du cadre (2) avec laquelle le support (110) est couplé trace pendant les opérations de pliage et/ou de calandrage.
  6. Procédé pour plier et/ou calandrer des profilés d'écartement (1) destinés à former des cadres d'écartement (4, 4', 4") pour l'unité de vitrage isolant (5), ledit pliage et/ou calandrage étant effectué par des étapes progressives sur le profilé d'écartement (1) lorsqu'il est dans son état rectiligne, comprenant l'alimentation du profilé d'écartement (1) avec un mouvement synchrone et le pliage du profilé d'écartement (1) pour former les cadres d'écartement (4, 4', 4"), caractérisé en ce que pendant lesdites étapes progressives, la partie qui a déjà été traitée sous la forme d'un cadre partiel (2) est supportée et retenue et guidée de manière mobile par un mécanisme (100) qui s'accouple avec et retient la partie initiale (2) du cadre d'écartement (3, 3', 3") le long d'une trajectoire qui est synchrone avec une position géométrique décrite par ledit cadre partiel (2) pendant la formation du cadre d'écartement par ladite alimentation et ledit pliage afin de contraster les actions provoquées par la gravité, l'inertie et le frottement.
  7. Procédé selon la revendication 6, caractérisé en ce que le support et le guidage sont réalisés au moyen d'actionneurs synchrones à positionnement polaire (ω, r) et rotation libre p.
  8. Procédé selon la revendication 6, caractérisé en ce que le support et le guidage sont obtenus au moyen d'actionneurs synchrones à positionnement polaire (ω, r, p).
  9. Procédé selon la revendication 6, caractérisé en ce que le support et le guidage sont obtenus au moyen d'actionneurs synchrones à positionnement cartésien (x, y).
  10. Procédé selon les revendications 6 à 9, caractérisé en ce que le support et le guidage ne fonctionnent pas sans discontinuités pendant la formation du cadre (2) mais avec des étapes de positionnement progressives sur différentes parties du cadre (3, 3', 3").
EP14189153.1A 2013-10-17 2014-10-16 Machine automatique et procédé automatique pour le cintrage des profilés d'écartement de calandrage pour obtenir des trames d'espacement pour une unité de vitrage isolant Active EP2862644B1 (fr)

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IT000167A ITTV20130167A1 (it) 2013-10-17 2013-10-17 Macchina automatica e procedimento automatico per la piegatura e la calandratura dei profili distanziatori per l'ottenimento dei telai distanziatori per vetro isolante.

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EP14189153.1A Active EP2862644B1 (fr) 2013-10-17 2014-10-16 Machine automatique et procédé automatique pour le cintrage des profilés d'écartement de calandrage pour obtenir des trames d'espacement pour une unité de vitrage isolant

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CA2924182C (fr) * 2015-04-02 2022-12-06 Lombarda Macchine S.A.S. Di G.B. Lattuada & C. Methode de courbure automatique d'elements espaceurs en vue d'isoler les panneaux de verre a double vitrage et machine servant a mener la methode
FR3074434B1 (fr) 2017-12-06 2019-11-15 Meca Theil Installation et procede de pliage de profiles metalliques d'ouvrants
WO2020070245A1 (fr) 2018-10-04 2020-04-09 Lisec Austria Gmbh Procédé et dispositif de fabrication d'un cadre d'écartement pour verre isolant
US11352831B2 (en) 2019-05-24 2022-06-07 PDS IG Holding LLC Glass seal tracking spacer applicator
CN112453119A (zh) * 2020-11-12 2021-03-09 湖南昕泰装饰材料有限公司 一种便于使用的铝型材矫直装置及其使用方法
IT202100017432A1 (it) * 2021-07-01 2023-01-01 Schnell Spa Apparecchiatura per la piegatura e/o calandratura di elementi oblunghi
WO2023275906A1 (fr) * 2021-07-01 2023-01-05 Schnell S.P.A. Appareil et procédé de pliage et/ou de cintrage d'éléments oblongs
CN113926950B (zh) * 2021-10-19 2023-06-06 海南马良师傅网络科技有限公司 一种实验室设备维修用电阻批量弯折设备
KR102561403B1 (ko) * 2023-01-27 2023-07-28 지석근 이중유리에 사용되는 간봉재 벤딩장치

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