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

Definitions

• This invention relates to a machine for processing a workpiece, in particular a wooden prismatic element, and finds particular use in the sector of processing wood.
• the prior art machines also comprise movement means configured for making the workpiece slide, along a feed path, inside the machine from the infeed section to the outfeed section.
• the prior art machines also comprise at least one processing station positioned on the workpiece feed path.
• the processing station usually comprises a column extending vertically between a lower end and an upper end.
• a processing tool configured to perform a processing on the workpiece, and a motor configured to actuate the tool are mounted in cantilever fashion.
• the column is movable in a sliding fashion along the vertical direction so as to be able to adjust the positioning of the tool relative to the workpiece.
• the column is connected to a base of the machine in such a way as to be slidably movable relative to the base along the vertical direction so as to be able to adjust the positioning of the tool relative to the dimensions, and in particular to the height, of the workpiece.
• the column is made to slide upwards so that the upper end is as distal as possible from the base in such a way that the tool is positioned above the workpiece.
• the column tends to bend, thus being unable to slide vertically in a suitable manner.
• the technical purpose of the invention is therefore to provide a machine for processing a workpiece which is able to overcome the drawbacks of the prior art.
• the aim of the invention is to provide a machine for processing a workpiece which is robust and efficient.
• a further aim of the invention is to provide a machine for processing a workpiece which is versatile, and in particular a machine which is able to control workpieces having a height of up to 200mm.
• the technical purpose indicated and the aims specified are achieved by a machine for processing a workpiece, in particular a wooden prismatic element.
• the machine comprises a base comprising a work table for supporting the workpiece.
• the work table defines a work surface extending, along a main direction of extension, between an infeed section configured to allow an insertion of the workpiece in the machine and an outfeed section configured to allow an extraction of the workpiece from the machine.
• the machine also comprises at least one processing station configured to perform at least one processing operation on the workpiece.
• the machine also comprises movement means configured for moving the workpiece from the infeed section to the outfeed section through the at least one processing station.
• the at least one processing station comprises a supporting column extending, along a vertical direction perpendicular to the work surface, between a first end fixed to the base and a second end distal from the work surface.
• the processing station also comprises a processing unit slidably coupled to the supporting column for sliding along the vertical direction towards and away from the processing surface.
• the processing unit comprises a processing tool configured for performing at least one processing operation on the workpiece and a motor configured for actuating the processing tool.
• the processing unit is moved in a vertical sliding fashion relative to the supporting column which remains stationary in such a way as to be moved towards or away from the work surface, for example, on the basis of the height, measured along the vertical direction, of the workpiece.
• the position of the processing tool can be suitably adjusted to operate on the workpiece which is currently being processed by the machine.
• the machine also comprises a supporting portal comprising at least one upright extending, parallel to the vertical direction, between a first end fixed to or integral with the base of the machine and a second end.
• the supporting portal also comprises a crosspiece extending between a first end connected to or integral with the second end of the at least one upright and a connecting portion connected to the second end of the supporting column.
• the connecting portion and the second end of the supporting column are reversibly connected to each other, for example by means of corner brackets.
• the crosspiece extends along a direction transversal to the main direction of extension and the connecting portion is defined by a second end of the crosspiece opposite the first end.
• the at least one upright faces the supporting column.
• the at least one upright and the supporting column are positioned one in front of the other in such a way that the work surface is interposed between them.
• the crosspiece joins the second end of the supporting column with the second end of the at least one upright and extends perpendicularly to the main direction of extension of the machine.
• the crosspiece extends parallel to the main direction of extension and the connecting portion is defined by a second end of the crosspiece opposite the first end.
• the at least one upright is substantially alongside the supporting column along the main direction of extension.
• the at least one upright and the supporting column are side by side from the same side relative to the work surface in such a way that the crosspiece, which connects the second end of the column to the second end of the at least one upright, is parallel to the main direction of extension.
• the supporting portal comprises a further upright extending, parallel to the vertical direction, between a first end fixed to or integral with the base of the machine and a second end.
• the crosspiece extends parallel to the main direction of extension of the machine between the first end and a second end fixed to or integral with the second end of the further upright.
• the connecting portion is interposed between the first and the second end of the crosspiece and the supporting column has the second end fixed to the crosspiece in the connecting portion.
• the machine comprises a plurality of processing stations positioned along the main direction of extension.
• the machine may comprise, for each processing station, a respective supporting portal made according to the above-mentioned first or second embodiment or it may comprise a single supporting portal shared by all the processing stations and made according to the above-mentioned third embodiment.
• each of them is operatively associated with the respective processing station in such a way that the second end of each supporting column of each processing station is associated with the connecting portion of a respective crosspiece.
• each supporting column of each processing station is associated with the same crosspiece at respective connecting portions.
• the at least one upright is positioned close to the infeed section and the further upright is positioned close to the outfeed section of the machine in such a way that the processing stations are interposed between the at least one upright and the further upright.
• the second end of each supporting column of each processing station is associated with said crosspiece at respective connecting portions.
• the processing station also comprises a first sliding system for guiding the sliding of the processing tool along the vertical direction relative to the supporting column.
• the first sliding system comprises a pair of sliding guides.
• the processing station also comprises a second sliding system for guiding the sliding of the motor along the vertical direction relative to the supporting column.
• the second sliding system comprises a pair of recirculating ball screw guides.
• the processing tool and the first sliding system are coupled to a first face of the supporting column parallel to the vertical direction whilst the motor and the second sliding system are coupled to a second face of the supporting column opposite the first face.
• the processing station comprises an actuation configured for sliding the processing tool and a further actuation, preferably of a manual type, configured for adjusting the positioning of the processing tool in the work surface.
• M denotes a machine for processing a workpiece, in particular a wooden prismatic element.
• the machine “M” comprises a base 100 comprising a work table for supporting the workpiece.
• the work table defines a work surface "XY" for the workpiece, extending, along a main direction of extension "X", between an infeed section "I” configured to allow an insertion of the workpiece in the machine "M” and an outfeed section “U” configured to allow an extraction of the workpiece from the machine "M” ( Figure 1 ).
• the machine “M” also comprises at least one processing station 200 configured to perform at least one processing operation on the workpiece.
• the machine “M” comprises, by way of a non-limiting example, a single processing station 200.
• the machine “M” may comprise a plurality of processing stations 200 positioned alongside each other along the main direction of extension "X" in such a way that the workpiece, as it moves forward in the machine "M", passes through each processing station 200 and undergoes the corresponding processing operations.
• the machine “M” also comprises movement means configured for moving the workpiece from the infeed section “I” to the outfeed section “U” through the at least one processing station 200.
• the movement means are configured to cause a sliding forward movement of the workpiece along the work table (which is stationary) in such a way that the workpiece, passing through the processing station 200, undergoes the processing.
• the machine "M” is a so-called passage machine wherein the movement means are configured for pulling the workpiece through the machine "M” in such a way that it undergoes at least the processing operation of the processing station 200.
• the processing station 200 comprises a supporting column 400 extending, along a vertical direction "Z" perpendicular to the work surface "XY", between a first end 400a fixed, for example screwed, to the base 100 of the machine "M” and a second end 400b distal from the work surface "XY".
• the supporting column 400 is fixed, and therefore unable to move, relative to the base 100.
• the supporting column 400 comprises a pair of profiles 400c, 400d extending along the vertical direction "Z".
• the profiles 400c, 400d comprise a plurality of seats "S" each configured for receiving a fixing means, for example a screw, in such a way as to allow a fixing of the supporting column 400 to the base 100 ( Figures 3A and 3B ).
• a fixing means for example a screw
• the processing station 200 also comprises a processing unit slidably coupled to the supporting column 400 for sliding along the vertical direction "Z" towards and away from the work surface "XY".
• the processing unit is movable in a sliding fashion along the supporting column 400 which, on the contrary, is stationary and fixed to the base 100.
• the processing unit comprises a processing tool 500 configured for performing at least one processing operation on the workpiece and a motor 600 configured for actuating the processing tool 500.
• the motor 600 is operatively connected to the processing tool 500 in such a way as to actuate the latter when processing of the workpiece is required at the infeed to the machine "M".
• the motor 600 is operatively connected to the processing tool 500 by a belt.
• the processing unit is moved vertically (along the vertical direction "Z") along the supporting column 400 in such a way as to adjust the position of the processing unit on the basis of the dimensions, and in particular the height (measured along the vertical direction "Z"), of the workpiece currently being processed in the machine "M".
• the processing unit is configured to slide along the supporting column 400 in such a way as to adopt, on the basis of the height of the workpiece being processed to the machine "M", an operating position wherein the processing tool 500 can act on the workpiece to be processed.
• the processing unit that is to say, the processing tool 500 together with the motor 600
• the processing tool 500 is made to slide along the supporting column 400 and its position is fixed in such a way that the processing tool 500 can perform the processing operation on the workpiece.
• the fact that the supporting column 400 is stationary and it is the processing tool 500 and the motor 600 which slide along it to move to the desired position means that the mechanical bending stresses which arise on the supporting column 400 when the machine "M" is in use are considerably reduced.
• the processing station 200 comprises an actuation 900, for example a motor, configured for sliding the processing tool and a further actuation, preferably of a manual type, configured for adjusting the positioning of the processing tool 500 in the work surface.
• an actuation 900 for example a motor, configured for sliding the processing tool and a further actuation, preferably of a manual type, configured for adjusting the positioning of the processing tool 500 in the work surface.
• the processing station 200 also comprises a first sliding system for guiding the sliding of the processing tool 500 along the vertical direction "Z" relative to the supporting column 400.
• the first sliding system comprises a slide 800 on which the processing tool 500 is mounted.
• the slide 800 is slidably associated with the supporting column 400 for moving the processing tool 500 in a sliding fashion.
• the slide 800 is slidable, along the vertical direction "Z", along the supporting column 400 in such a way as to move the sliding processing tool 500 by adjusting its position on the basis of the height of the workpiece being processed in the machine "M".
• the slide 800 is made of cast iron.
• the first sliding system also comprises a pair of sliding guides 800a, 800b.
• the sliding guides 800a, 800b are applied to or integral with the supporting column 400 and extend along the vertical direction "Z" to allow the above-mentioned sliding of the slide 800.
• the sliding guides 800a, 800b are made on a respective profile 400c, 400d of the supporting column 400.
• the profiles 400c, 400d are mutually spaced to define a sliding channel for the slide 800.
• the pair of sliding guides 800a, 800b comprises guides of the dovetail type.
• this type of guide reduces the mechanical vibrations acting on the supporting column 400 and due to the sliding of the slide 800.
• the processing station 200 also comprises a second sliding system for guiding the sliding of the motor 600 along the vertical direction "Z" relative to the supporting column 400.
• the second sliding system comprises a pair of recirculating ball guides 600a, 600b.
• These recirculating ball guides 600a, 600b are applied to the supporting column 400 and extend along the vertical direction "Z".
• the pair of recirculating ball guides 600a, 600b is configured for guiding the sliding of the motor 600 along the vertical direction "Z" relative to the supporting column 400 ( Figure 3B ).
• the fact of applying to the supporting column 400 the recirculating ball guides 600a, 600b to which the motor 600 is slidably connected allows the weight of the motor 600 to be discharged on the supporting column 400 and not on the slide 800.
• the processing tool 500 and the first sliding system are coupled to a first face of the supporting column 400 parallel to the vertical direction "Z" whilst the motor 600 and the second sliding system are coupled to a second face of the supporting column 400 opposite the first face.
• the first sliding system allows the sliding of the processing tool 500 in such a way as to adjust, along the vertical direction "Z", the position of the processing tool 500.
• the second sliding system allows the sliding of the motor 600 in such a way that the processing tool 500 and the motor 600 slide synchronously relative to the supporting column 400 along the vertical direction "Z".
• the machine “M” also comprises a supporting portal comprising at least one upright 700a extending, parallel to the vertical direction "Z", between a first end 700a' fixed to or integral with the base 100 and a second end 700a".
• the supporting portal also comprises a crosspiece 700c extending between a first end 700c' connected to or integral with the second end 700a" of the at least one upright 700a and a connecting portion "P" connected to the second end 400b of the supporting column 400.
• the second end 400b of the supporting column 400 and the connecting portion "P" of the crosspiece 700c are reversibly connected to each other.
• the second end 400b of the supporting column 400 and the connecting portion "P" of the crosspiece 700c are reversibly connected to each other by fixing means "F", for example by means of corner brackets ( Figure 2B ).
• the crosspiece 700c extends along a direction "Y" transversal to the main direction of extension "X" and the connecting portion "P" is defined by a second end 700c" of the crosspiece 700c opposite the first end 700c'.
• the at least one upright 700a faces the supporting column 400.
• the at least one upright 700a and the supporting column 400 are facing each other and aligned along the direction "Y" transversal to the main direction of extension "X" in such a way that the work table is interposed between them.
• the second end 400b of the supporting column 400 is connected to the second end 700c" (which coincides with the connecting portion "P") of the crosspiece 700c whilst the first end 700c' of the crosspiece 700c is integral with or connected to the second end 700a" of the at least one upright 700a.
• the crosspiece 700c is positioned perpendicularly to the main direction of extension "X".
• the machine “M” may comprise, for each processing station 200, a respective supporting portal made according to the above-mentioned first embodiment.
• the second end 400b of each supporting column 400 of each processing station 200 is associated with a respective crosspiece 700c of a respective supporting portal.
• each processing station 200 would be provided with a supporting portal having an upright 700a positioned facing the supporting column 400 and a crosspiece 700c joining the second end 400b of the supporting column 400 to the second end 700a" of the upright 700a and extending perpendicularly to the main direction of extension "X".
• the crosspiece 700c extends parallel to the main direction of extension "X" and the connecting portion "P" is defined by a second end 700c" of the crosspiece 700c opposite the first end 700c'.
• the at least one upright 700a is substantially alongside the supporting column 400 along the main direction of extension "X”.
• the at least one upright 700a and the supporting column 400 are side by side and aligned along the main direction of extension "X" from the same part relative to the work table.
• the second end 400b of the supporting column 400 is connected to the second end 700c" (which coincides with the connecting portion "P") of the crosspiece 700c whilst the second end 700a" of the at least one upright 700a is connected to or integral with the first end 700c' of the crosspiece 700c which is thus parallel to the main direction of extension "X".
• the machine “M” may comprise, for each processing station 200, a respective supporting portal made according to the above-mentioned second embodiment.
• each supporting column 400 of each processing station 200 is associated with a respective crosspiece 700c of a corresponding supporting portal.
• each processing station 200 is provided with a supporting portal having an upright 700a positioned alongside the respective supporting column 400 and a crosspiece 700c joining the second end 400b of the supporting column 400 to the second end 700a" of the upright 700a and extending parallel to the main direction of extension "X".
• the supporting portal comprises, in addition to the at least one upright 700a and the crosspiece 700c, a further upright 700b extending, parallel to the vertical direction "Z", between a first end 700b' fixed to or integral with the base 100 and a second end 700b".
• the crosspiece 700c extends parallel to the main direction of extension "X" of the machine "M” between the first end 700c', connected to or integral with the second end 700a" of the upright 700a, and a second end 700c" connected or integral with the second end 700b" of the further upright 700b.
• the connecting portion "P" is interposed between the first and the second end 700c', 700c" of the crosspiece 700c and the supporting column 400 has the second end 400b fixed to the crosspiece 700c in the connecting portion "P".
• the upright 700a is positioned close to the infeed section "I" of the machine "M” whilst the further upright 700b is positioned close to the outfeed section "U” of the machine “M” in such a way that the processing station 200 is interposed between the uprights 700a, 700b.
• the second end 400b of the supporting column 400 is connected to the connecting portion "P" of the crosspiece 700c which is interposed between the first and the second end 700c', 700c" of the crosspiece 700c.
• the second end 400b of each supporting column 400 of each processing station 200 is associated with the same and sole crosspiece 700c at respective connecting portions "P".
• the upright 700a is positioned close to the infeed section "I" of the machine "M” whilst the further upright 700b is positioned close to the outfeed section "U” of the machine “M” in such a way that all the processing stations 200 are interposed between the uprights 700a, 700b and in such a way that the crosspiece 700c extends parallel to the main direction of extension "X" above the second end 400b of each supporting column 400.
• the second ends 400b of the supporting columns 400 are connected to the crosspiece 700c at respective connecting portions "P".
• the invention achieves the preset aims overcoming the drawbacks of the prior art.
• the fact that the supporting column 400 is stationary and integral with the base 100 (in effect, it is the processing tool 500 and the motor 600 which slide along it) prevents the occurrence of excessive bending and vibrational forces on the supporting column 400, especially when the workpiece being processed has a considerable height.
• the fact of connecting the second end 400b of the supporting column 400 to the crosspiece 700c of the supporting portal makes the entire machine "M” more robust and, in particular, contributes to preventing the occurrence of bending forces on the supporting column 400 when the machine "M" is in use.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mechanical Engineering (AREA)
• Wood Science & Technology (AREA)
• Forests & Forestry (AREA)
• Machine Tool Units (AREA)

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Citations (9)

• 2025
  • 2025-06-03 EP EP25180530.5A patent/EP4659921A1/de active Pending

Patent Citations (9)

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