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WO2024134353A1 - Centre d'usinage de type portique pour usiner des pièces de bois allongées - Google Patents

Centre d'usinage de type portique pour usiner des pièces de bois allongées Download PDF

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Publication number
WO2024134353A1
WO2024134353A1 PCT/IB2023/062498 IB2023062498W WO2024134353A1 WO 2024134353 A1 WO2024134353 A1 WO 2024134353A1 IB 2023062498 W IB2023062498 W IB 2023062498W WO 2024134353 A1 WO2024134353 A1 WO 2024134353A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
gripper
working
rollers
working station
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.)
Ceased
Application number
PCT/IB2023/062498
Other languages
English (en)
Inventor
Nicola SELLA
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.)
Essetre Unipersonale Srl
Original Assignee
Essetre Unipersonale Srl
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 Essetre Unipersonale Srl filed Critical Essetre Unipersonale Srl
Priority to EP23825482.5A priority Critical patent/EP4638057A1/fr
Priority to AU2023409677A priority patent/AU2023409677A1/en
Publication of WO2024134353A1 publication Critical patent/WO2024134353A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/04—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
    • B23Q7/041—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers step by step
    • B23Q7/042—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers step by step for the axial transport of long workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/16—Saw benches
    • B27B5/18—Saw benches with feedable circular saw blade, e.g. arranged on a carriage
    • B27B5/20—Saw benches with feedable circular saw blade, e.g. arranged on a carriage the saw blade being adjustable according to depth or angle of cut; Radial saws, i.e. sawing machines with a pivoted radial arm for guiding the movable carriage
    • B27B5/207—Saw benches with feedable circular saw blade, e.g. arranged on a carriage the saw blade being adjustable according to depth or angle of cut; Radial saws, i.e. sawing machines with a pivoted radial arm for guiding the movable carriage the saw blade being fitted on a movable carriage
    • 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
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2240/00—Machine tools specially suited for a specific kind of workpiece
    • B23Q2240/007—Elongated workpieces

Definitions

  • a unit for collecting and transporting machining scraps outside the working station may be provided below the plane defined by the loading and unloading ways and coinciding with the working station , i . e . , below the machining tool .
  • the grippers associated with the loading and unloading ways are translatable parallel to the path defined by the corresponding loading or unloading way and terminate their travel at the inlet and outlet from the working station .
  • the workpiece overhangs the end of the corresponding loading or unloading way and is held fixed by means of the corresponding gripper .
  • This construction is effective when the lengths of the workpiece are greater to some extent than the size of the working station between the inlet and outlet .
  • they require for workpiece load that one or both grippers perform repositioning operations with respect to the workpiece that allow the front end of the workpiece to be brought beyond the exit of the working station and for a certain extent into the initial section of the unloading way and thus into the area where the gripper associated with the said unloading way can safely and firmly enough grasp the front end of the workpiece that has been pushed beyond the working station by the gripper associated with the loading way .
  • the invention relates to a gantry work center for machining wood pieces having predominantly longitudinal extension , such as beams , boards or the like , which work center comprises : a loading way, for at least one workpiece to be machined, an unloading way, for the workpiece being machined, a working station having an inlet and an outlet on opposite sides of said station , and comprising a supporting frame of at least one working tool , said working station being interposed between said loading way and said unloading way, said loading way ending at said inlet of said working station and said unloading way starting at said outlet of said working station ; to said ways of loading and unloading being associated corresponding grippers of loading and unloading of said piece , and wherein , a first gripper is provided movable along the loading way, in a moving direction of the workpiece , between a distal end from the working station and a proximal end to the working station , while a second gripper is provided movable in the moving direction of the workpiece ,
  • a working area of at least a working tool is provided at the working station , said working area comprising a part of the space volume inside said working station , said working area is three- dimensional and consists of a vertical column having a pre-established dimension in the moving direction of the workpiece and in the transverse direction to said moving direction of the workpiece as well as a pre- established vertical extension between two horizontal levels , respectively, a minimum lower level and a maximum upper level , while between the vertical side wall (s) delimiting said volume of space inside said working station and the corresponding virtual limits of the working area of said at least one working tool there is provided a moving corridor for said second gripper of said workpiece provided inside said working station , which corridor constitutes a non-interference zone between said second gripper and said at least one working tool , said second gripper and said at least one working tool being freely movable within the respective working area and moving corridor .
  • the working area of said at least one working tool and the moving corridor of said second gripper within the working station are placeable relatively to each other according to the intended working position of said at least one working tool and/or the intended working position of said second gripper , safety limits being provided consisting of the distance and/or the minimum possible size respectively between said at least one working tool and said second gripper and/or for the said working area of said at least one working tool and for the moving corridor of said second gripper .
  • the working tool is supported by a motorised moving member according to at least two , in particular three , preferably five or more degrees of freedom of said working tool
  • said second gripper comprising motorised gripping members and it is supported by a moving member thereof enabling displacement of said second gripper
  • said moving member being controlled by a control logic comprising a central processing unit executing a control program which comprises instructions for synchronised displacement and activation and deactivation of said at least one working tool and of said second gripper and in which relative dimensions and positions between said working area of said at least one working tool and said moving corridor of said second gripper are settable .
  • One possible executive form is the use of robotic arms as the moving members of said at least one tool and/or said second gripper .
  • said second gripper is mounted on a motorised slide which is slidable on a guideway oriented parallel to the moving direction of the workpiece and is translatable in a direction concordant or discordant to the moving direction of the workpiece .
  • the gripper can be mounted on the said horizontal slide by means of an additional combination of vertical guides and slide sliding on the same and allowing the gripper to be translated upward and downward .
  • a combination of slides can also be provided for the said at least one working tool .
  • an embodiment provides that the movable member of the said at least one working tool comprise a combination of guides and related slides in which at least two guides with related slides or related carriages are provided, and which guides are oriented at least in a direction transverse to the direction of feed of the workpiece and at least according to a vertical direction .
  • a preferred embodiment provides that the said at least one tool is mounted rotatable about at least one axis parallel to one of said at least two mutually orthogonal guideways and/or according to an axis of oscillation or tilting perpendicular to said axis of rotation .
  • the first gripper associated with the loading way of the workpiece consists of a gripper hereafter also referred to as a load gripper , which gripper has at least two gripper jaws that can be approached and spaced between an open position in which the workpiece is free to move relative to the gripper in a closed position in which said jaws clamp opposing sides of the workpiece between them, holding it fixedly between them, while said two jaws have extensions in front of and/or parallel to the direction of the workpiece ’ s advance toward the working station , which extensions extend toward the area of the working station entrance , beyond the end position of maximum approach of said loading clamp to the working station entrance for the workpiece or part thereof .
  • the second gripper inside the working station also comprises a gripper having a pair of clamping jaws , at least one of which is movable relative to the other .
  • the working station has at least one pair of opposing rollers for gripping the workpiece to be machined at the inlet to said working station , the rollers) of which pair are rotatable about axes which are parallel to each other , said rollers or at least one of said rollers being displaceable transversally to the rotation axis in the direction of reciprocal approach and distancing and to and from the side of the workpiece respectively facing one of the two rollers .
  • One embodiment provides in combination a second pair of rollers which are rotatable about axes parallel to each other and mounted displaceable in the direction of reciprocal approach and distancing and to and from the corresponding side facing the respective roller of the workpiece , the axes of said further pair of rollers being oriented according to a different direction with respect to the axes of said first pair of rollers , in particular according to a direction perpendicular to the axes of said first pair of rollers , and the direction of approach and departure of the rollers of said first pair of rollers also being different and preferably perpendicular to the direction of reciprocal approach and departure of said first pair of rollers .
  • the first pair of rollers has vertical axes of rotation and is movable in the direction of mutual approach and departure parallel to the horizontal direction , while the axes of the second pair of rollers are horizontal and the direction of mutual approach and departure of these rollers is vertical .
  • the front jaw extensions from the first gripper i . e .
  • the loading gripper terminate at or in a position immediately adjacent to the plane of axle displacement of the said first pair of rollers , when the loading gripper is in the end position of maximum approach to the entrance of the working station .
  • An execution variant provides that one of the two rollers of the second pair of rollers , is stationary and extends with its mantle surface flush with the workpiece support plane of the loading way .
  • one of the two rollers of the first pair of rollers , or the pair of rollers with vertical axes is stationary and it is a workpiece reference stop position , also referred to as zero reference , while the rollers have an axial extension which is greater than the corresponding maximum dimension of the workpiece being machined, which axial extension is greater than the corresponding maximum dimension of the workpiece being machined corresponding to the sum of the dimensions in said direction of the front extensions of the jaws and/or of at least part of the stroke in the direction of reciprocal displacement of said jaws , and while in the position of maximum approach of the loading gripper to the inlet of the working station , said jaw extensions of the jaws of the loading gripper overlap with the side of the stationary roller on the side facing the opposing roller of said first pair of rollers , at least for part of the diameter of said roller or for the entire diameter of said roller in the moving direction of the workpiece .
  • the second gripper inside the working station is slidable in the two directions between the inlet and the outlet of the working station along a guide oriented in the moving direction of the workpiece and optionally preferably aligned, as an extension in said moving direction of the workpiece or realised in one piece with the traversing guide of the first gripper associated with the loading way, while in the position of maximum approach to the inlet of the working station said second gripper is directly adjacent to the facing ends of the front extensions of the jaws of the loading gripper , constituting an extension thereof in the moving direction of the workpiece .
  • the second gripper is mounted on a motorized slide or carriage and its jaws are actuated by motorized actuator alternately in the direction of approaching and receding , that is , in the direction of clamping opposing sides of the workpiece and distancing or freeing the workpiece .
  • the second gripper is positioned adjacent to a pair of grippers , e . g .
  • motorized, counter-rotating unloading rollers which are movable relatively to each other in the direction of mutual approach and departure and to and from facing mutually opposite sides of the workpiece and which are actuated for extracting the workpiece from the working station when the second gripper has been brought into a workpiece free condition .
  • the stationary roller of the first pair of rollers at the inlet of the working station is associated, in a spaced position to a certain extent towards the loading way at least one further stationary roller which is aligned with the stationary roller of the first pair of rollers relative to the feed direction of the workpiece towards the working station , is rotatable about an axis parallel to that of the rollers of said first pair of rollers , and has a diameter identical to said stationary roller of said first pair of rollers , thereby generating with it two support points which are spaced apart from each other in the moving direction of said workpiece and which define the reference position of said workpiece relative to the direction perpendicular to the moving direction of said workpiece and parallel to the support plane of said workpiece on the loading way and on the bottom roller of said second pair of rollers .
  • the control computer of the working station executes a control program which comprises instructions for said computer to control the process of manipulating the workpiece by means of the two grippers according to the following steps : the first gripper associated with the loading way grips the workpiece being processed by moving to the position of maximum approach to the inlet of the working station ; in this position it finds the second gripper inside the working station which has been brought to the position directly adjacent to the inlet of the working station and to the ends of the extensions of the jaws of the first loading gripper ; the second gripper clamps the workpiece being machined, leaving an initial section projecting forward with respect to the gripper itself , and the first gripper opens by releasing it while the second gripper moves relative to the working tool to the right and/or left of the same to perform a machining operation that defines a reference relative to the longitudinal extension of the workpiece , typically a cut at least the second gripper or both grippers remain active or are activated to clamp the workpiece to be machined after the zero cut and the second
  • the second gripper moves further towards the outlet of the working station with the workpiece clamped therein until it is gripped by the unloading grippers which pick up the workpiece and deposit it on the unloading way after the second gripper has passed in an open condition and thus released the workpiece itself .
  • the working station includes at least one tool that consists of a workpiece cutting tool .
  • the working station may comprise at least two or more machining tools , at least one of which consists of a cutting tool .
  • Figure 1 is a perspective view of a machining center according to an embodiment of the present invention , particularly a center for cutting beams , boards , or the like .
  • Figure 2 is a perspective view of the machining center according to Figure 1 from an opposite direction of view .
  • Figure 3 is an enlarged view of the working station in Figure 2 in a perspective view from a similar direction of view as Figure 2 .
  • Figure 4 shows a perspective view on the translation guide in the direction of workpiece loading and on the first gripper , i . e . , the loading gripper , and on the second gripper , i . e . , the gripper inside the machining station being the other construction parts omitted .
  • Figure 5 shows an enlarged view of the machining station area according to yet another direction of view having a component in the laoding direction of the workpiece and with the first gripper loading and the second gripper in a working position .
  • Figure 6 is a perspective , enlarged view of the working station relative to the area of the inlet and opposite outlet of the workpiece from said working station and with the first gripper , i . e . , the loading gripper at the end position of maximum approach to the inlet of the working station and the second gripper inside the working station in a position directly adjacent to the said first gripper for picking up the workpiece from the said first loading gripper and the loading way .
  • Figure 7 shows a side elevation view on the inlet side of the working station and in the direction of view parallel to the workpiece loading direction .
  • Said loading way 1 is located upstream of said machining station 2 . -with reference to the direction of loading of said workpieces P to be machined- and ends at an inlet 20 of said machining station 2 .
  • Downstream of said machining station 2 and in a position directly adjacent to an outlet 21 of said machining station is provided an downloading way 3 of the machined workpieces being transported out of said machining station 2 through said outlet .
  • the example shows a loading conveyor operating by transferring to a predetermined pick-up position one workpiece at a time by means of a translation of said workpiece , preferably parallel to itself , in a direction transverse to the longitudinal extension of said workpiece and the longitudinal axis of the workpiece being positioned parallel to the direction of loading to the processing station .
  • a plurality of conveyor belts 101 that are arranged parallel to each other and interspaced in the loading direction of the workpiece P to be machined toward working station 2 and in said working station 2 , are oriented perpendicular to said loading direction (arrow A in Figure 1 ) .
  • the belts are returned around end pulleys of which at least one of said two opposite pulleys is rotationally driven by an Ml motor .
  • all belts are driven by a single motor by means of a common axis of rotation extending along all the deflection pulleys of the individual belts 101 provided at the ends of the belts whose ends coincide with or fall in the area of the position of picking up the workpiece P for loading it to the working station 2 .
  • At least one loading gripper 4 is associated with the loading way and is expected to be positioned or positionable at the workpiece P to be machined on the pick-up zone of the loading way.
  • the pick-up zone denoted by 201 consists of a sliding surface oriented in the direction of feed of the workpiece P toward the working station 2 or parallel to the longitudinal extension of the workpiece (s) P to be machined .
  • the loading gripper 4 is mounted sliding on a translation guide 5 that is oriented parallel to the direction of loading A, i . e . , the longitudinal extension of the workpiece (s) P to be machined, and extends laterally to said pre-picking zone or strip 201 , while constituting a transverse traversing end stop of the individual workpieces P being transferred to the pre-picking zone or strip 201 .
  • the loading gripper 4 is mounted on a slide or motorized carriage 104 M2 that is engaged sliding along the guide 5 in the two directions , i . e . , forward and backward according to arrow B in the figure 4 .
  • the gripper 4 has a stationary lower jaw 204 that is intended to be positioned flush with the workpiece support surface P in the pick-up area 201 and an upper jaw 304 that is vertically movable in both directions , i . e . , away from and toward the stationary lower jaw 104 .
  • the upper jaw is substantially vertically coincident with the lower jaw and is positioned by at least one vertical stem of a linear actuator , preferably, for example , by a combination of a stem 404 of a linear actuator and two vertical guides 504 parallel to themselves and to the stem 404 .
  • Said two guides may possibly constitute the end stops of the transverse transfer stroke of the individual parts P in the pick-up zone 201 .
  • the jaws 204 and 304 extend in the transverse direction with respect to the direction of loading A to a certain extent so as to form opposing clamping surfaces of the workpiece P that are intended to cooperate with a coincident part of one side of the workpiece P facing the corresponding jaw 204 , 304 , i . e . , of two opposite sides of the workpiece P to be machined .
  • the two jaws 204 and 304 each have an extension 604 that is intended to increase the contact surface between the jaw and the side correspondingly facing it by extending it further along the workpiece P in the longitudinal direction of the same and in the loading direction A.
  • an additional workpiece gripper 6 is provided within working station 2 , which gripper 6 has a construction substantially similar to that of gripper 4 , except for the absence of the extensions 604 of the corresponding jaws 206 and 306.
  • the second gripper 6 is slidably mounted on a guide which is oriented in the direction of loading A of the workpiece and which is an extension of the guide 5 of the first gripper 4 or is longitudinally aligned with the same or which , as illustrated in figure 4 , is formed by the same sliding guide 5 which also extends inside the working station 2 for a certain extent or for the entire extension of the compartment of the working station 2 between the inlet and the outlet of said working station 2 .
  • An unloading way 3 is provided at the outlet of the working station 2 , which can be realised in any way according to the variants and forms of execution known to the branch technician from his technical background .
  • an inclined conveyor plane 103 comprising individual supports 203 or belts or sliding walls 303 provided between said supports and onto which the workpieces P are transferred by a pick-up and unloading device provided at the exit of the working station 2 .
  • the machined workpiece P slides by the action of gravity alone or , if necessary, by conveyors associated with said inclined plane , such as belts or the like similar to those of loading route 1 towards a collection station , not shown in detail at the lower end of said inclined plane .
  • the machining tool comprises the cutting disc of a circular saw, which cutting disc 108 is mounted on a shaft 208 of a drive motor 308 .
  • the drive motor 308 is driven in an oscillating manner about a horizontal axis by an end arm 107 of the support and handling assembly 7 .
  • the end arm 107 is in turn posted by a vertical shaft not shown in detail which is mounted rotatably about its vertical axis in a pivoting support indicated with 207 , which specifically is of the column type .
  • Said column support is mounted on a vertical guide and carriage or slide assembly indicated globally by 307 and said vertical guide 307 is in turn mounted on a slide or carriage sliding on a guide 407 horizontal and transverse to the loading direction A of the workpiece P in the working station 2 .
  • the cutting tool 108 i . e . the motor and tool assembly 108 , 208 is additionally mounted on combinations of guides and slides or rotary supports for performing movements according to further axes or degrees of freedom.
  • Figures 1 and 2 show the first gripper 4 associated with the loading way 1 in its extreme position of maximum distance from the inlet 20 of the working station 2 .
  • Figure 3 shows said loading gripper 4 in the position of maximum approach to inlet 20 of said working station 2 , while in the same figure 3 , said second gripper 6 inside said working station 2 is positioned in the end position adjacent to outlet 21 of said working station 2 .
  • Figure 6 shows said two grippers 4 , 6 , respectively loading and internal to working station 2 in end-stroke positions similar to those shown in figure 3
  • figure 5 shows said grippers in intermediate positions between the two extreme positions of said grippers .
  • the second gripper 6 internal to the working station 2 is positioned between the inlet 20 of said station and the tool 108
  • said second gripper 6 is positioned between the tool 108 and the outlet 21 of said working station 2 .
  • Figure 7 shows gripper 4 in the position of figures 3 and 6 , while gripper 6 is not visible as it is covered by this first gripper 4 with which it is perfectly aligned in loading direction A.
  • a side stop of the workpiece which defines a fixed reference position , also called zero reference , of the workpiece P , with reference to a horizontal direction and perpendicular to the loading direction A or to the longitudinal extension of the workpiece P .
  • Said stop is constituted by a stationary roller 122 having a vertical axis of rotation and a predetermined diameter , said stationary roller 122 being part of a pair 22 of rollers 122 , 222 each of which is intended to cooperate with a side of two opposite sides of the workpiece P .
  • the second roller 22 of the pair is substantially identical to the first roller and is supported coincident with said first roller 122 in a direction perpendicular to the direction of advancement A and horizontal and furthermore translatable in said direction alternately approaching or receding the stationary roller 122 thanks to a translation support controlled by an actuator 322 .
  • the second roller 222 of the pair of rollers 22 is also rotatable about its axis . In the presence of the workpiece P , the second roller 222 is traversed against the facing side of the workpiece P and the workpiece P is slidingly confined longitudinally, i . e . in the lading direction A, between the two rollers by the action of the first gripper 4 and/or the second gripper 6 as will be described in greater detail below .
  • the first stationary roller 122 can be associated in a position aligned and parallel to said first stationary roller 122 by a certain pre-established distance and which constitutes a second lateral reference stop surface of the workpiece P , thanks to which a better support of said workpiece P on the position references is ensured .
  • a second pair of rollers 23 is provided directly downstream of said first pair of rollers 22 .
  • the rollers 123 and 223 of said second pair of rollers 23 are oriented with their axes in a horizontal position and perpendicular to the feed direction A and are vertically coincident with each other both with their axes and with their mantle surfaces , having the same diameter .
  • the lower horizontal roller 123 is stationary and its mantle surface extends flush with the support plane of the pick-up area of the loading way 1
  • the upper roller 223 is mounted translatably, parallel to itself and in the vertical plane containing the axes of the two rollers 123 and 223 , upwards and downwards in the direction of approach or departure from the stationary horizontal roller 123 and against the facing side of the workpiece P when it is inserted at least with one of its sections within the working station 2 .
  • the horizontal upper roller 223 is moved by actuators 323.
  • the two pairs of vertical and horizontal rollers 22 and 23 ensure that the workpiece is kept in the precise position with respect to stationary references in both vertical and horizontal directions .
  • the vertical axial extension of the rollers 122 and 222 is greater than the distance between the outer walls of the two opposite jaws 294 and 304 of the first gripper , 4 i . e .
  • the length of said front extensions is substantially corresponding to the distance of two diametrically opposed points of the shell surfaces of said two stationary rollers 122 and 422 , or to the distance corresponding to the distance of the axes of said rollers plus a diameter of said rollers , and the position of said extensions in a horizontal direction and perpendicular to the direction of advancement is defined in such a way that said extensions overlap laterally with said rollers 422 and 122 on the side of said rollers facing the opposite roller 222 .
  • the second gripper 6 inside the machining station 2 can be brought in this case to the position directly adjacent to the pair 22 of rollers and the front ends of the front extensions 604 of the gripper 4 , as is evident from figure 6.
  • a workpiece P entering the working station 2 can be gripped by the first gripper 4 and brought to engage with its front end in the second gripper 6.
  • the latter after having grasped the workpiece P in a predetermined position with respect to the protruding end beyond the same of the workpiece P , can advance towards the zone of action of the tool 108 while remaining outside of it , but bringing said end into the zone of action of the tool 108 . It is thus possible to perform an initial reference cut , for example , in the present case , to measure the length of workpiece P .
  • said two collets 4 and 6 can be actuated synchronously with each other to move said workpiece P forward together or alone , in a measure corresponding to a new machining position and to the final machining step to bring the tail of said workpiece P into the zone of action of the tool 108 to perform the machining steps of said tail of said workpiece P .
  • the workpiece can always be firmly held in position by the second gripper , which can be brought as close as possible to the boundaries of the field of action of the tool P while remaining outside said field of action and thus effectively and safely avoiding interference between the tool 108 and the inner gripper 6.
  • a part of the workpiece is already engaged with a workpiece extraction unit from said working station or is brought into an engaged condition with said unit by the second collet 6.
  • said extraction unit is not visible in detail , but may, for example , be constituted by a pair of driving rollers which are brought to cooperate with opposite sides of said workpiece P and which , thanks to friction surfaces increased between them and said surfaces of said workpiece P and being driven in rotation by a motor , provide for the advancement of said machined workpiece P out of said station 2 bringing it to the unloading way 3 , for example on the upper side of the inclined plane forming said unloading way .
  • the inner gripper 6 occupies a part of the workpiece with an extension in the longitudinal direction of approximately a couple of tens of centimetres , e . g . between 15 and 25 cm.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Feeding Of Workpieces (AREA)

Abstract

L'invention concerne un centre d'usinage de type portique pour traiter des pièces de bois ayant une extension principalement longitudinale, telle que des poutres, des planches ou similaires, le centre d'usinage comprenant une voie de chargement (1) pour au moins une pièce (P) à usiner, une voie de déchargement (3) pour la pièce (P) usinée, une station de travail (2) ayant une entrée (20) et une sortie (21) sur des côtés opposés de ladite station et comprenant un cadre de support d'au moins un outil de travail (8, 108), ladite station (2) étant interposée entre ladite voie de chargement (1) et ladite voie de déchargement (3), ladite voie de chargement (1) se terminant à ladite entrée (20) de ladite station (2) et ladite voie de déchargement (3) commençant à ladite sortie (21) de ladite station (2) ; auxdites voies (1, 3) de chargement et de déchargement étant associés des dispositifs de préhension (4, 6) correspondants de chargement et de déchargement de la pièce (P), et un premier dispositif de préhension (4) est prévu mobile (5) le long de la voie de chargement, dans la direction d'alimentation (A) de la pièce (P), entre une extrémité distale par rapport à la station de travail (2) et une extrémité proximale à la station de travail (2), tandis qu'un deuxième dispositif de préhension (6) est prévu mobile dans la direction d'alimentation (A) de la pièce (P), vers l'avant et vers l'arrière, dans la station de travail (2), entre l'entrée (20) et la sortie (21) de la pièce (P) de la station de travail (2), et tandis qu'un organe de préhension de déchargement est disposé au moins en correspondance, de préférence juste à côté de la sortie (21) de la station de travail (2).
PCT/IB2023/062498 2022-12-20 2023-12-11 Centre d'usinage de type portique pour usiner des pièces de bois allongées Ceased WO2024134353A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23825482.5A EP4638057A1 (fr) 2022-12-20 2023-12-11 Centre d'usinage de type portique pour usiner des pièces de bois allongées
AU2023409677A AU2023409677A1 (en) 2022-12-20 2023-12-11 Gantry-type machining centre for machining elongated wood pieces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102022000026076 2022-12-20
IT102022000026076A IT202200026076A1 (it) 2022-12-20 2022-12-20 Centro di lavoro a portale per la lavorazione di pezzi in legno aventi prevalente estensione longitudinale, come travi, tavole o simili

Publications (1)

Publication Number Publication Date
WO2024134353A1 true WO2024134353A1 (fr) 2024-06-27

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PCT/IB2023/062498 Ceased WO2024134353A1 (fr) 2022-12-20 2023-12-11 Centre d'usinage de type portique pour usiner des pièces de bois allongées

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Country Link
EP (1) EP4638057A1 (fr)
AU (1) AU2023409677A1 (fr)
IT (1) IT202200026076A1 (fr)
WO (1) WO2024134353A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770433A1 (fr) * 1997-11-04 1999-05-07 Michel Pioch Dispositif d'usinage de pieces de toutes longueurs a partir de barres
WO2003047813A1 (fr) * 2001-12-06 2003-06-12 Cinetic Machining Machine d'usinage pour elements profiles longitudinaux
EP2594358A2 (fr) * 2011-11-18 2013-05-22 Essetre Holding SpA Centre d'usinage avec portiquel fixe pour l'usinage des poutres en bois

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770433A1 (fr) * 1997-11-04 1999-05-07 Michel Pioch Dispositif d'usinage de pieces de toutes longueurs a partir de barres
WO2003047813A1 (fr) * 2001-12-06 2003-06-12 Cinetic Machining Machine d'usinage pour elements profiles longitudinaux
EP2594358A2 (fr) * 2011-11-18 2013-05-22 Essetre Holding SpA Centre d'usinage avec portiquel fixe pour l'usinage des poutres en bois

Also Published As

Publication number Publication date
AU2023409677A1 (en) 2025-06-19
IT202200026076A1 (it) 2024-06-20
EP4638057A1 (fr) 2025-10-29

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