Process of cutting a joinery

Abstract

The invention relates to a method for cutting a joinery (10) by a cutting device (100), the joinery (10) being of the type comprising at least one frame (11) and a glazing (12), the method being characterized in that it comprises a step of cutting the glazing (12) of the joinery (10) by a cutting tool (20) along the frame (11) and at a predetermined distance (d) from said frame (11) so as to separate a main portion (12A) of the glazing (12). The invention also relates to a cutting device (100) for implementing at least one such cutting step. (Fig. 4)

Description

Title of the invention: Method for cutting joinery Technical field of the invention

[0001] The invention relates, in general, to the technical field of woodwork recycling. The invention may relate to different sectors of activity, such as that of designers of automated cutting centers or that of extended producer responsibility (EPR) sectors in the construction sector.

[0002] The invention relates more specifically to a method of cutting joinery, in particular for separating a frame of glazing from the joinery, and to an associated cutting device. State of the prior art

[0003] Recycling joinery allows the majority of components of a joinery to be recovered to transform them into secondary raw materials or produce energy. However, the different materials that make up a joinery are not reused in the same way and must therefore be separated before being sorted.

[0004] Generally speaking, joinery is composed of a fixed part, called a frame, a movable part, called an opening or leaf, which comprises at least one structure framing a glazing, and fixing elements which make it possible to connect the frame and the leaf. The frame and the leaf, possibly with the frame, form a frame of the joinery. Thus, joinery can independently designate a window, a French window, a glazed balcony, a bay window or any other structure comprising a frame surrounding a glazing.

[0005] It is understood that the glazing may be a single plate or wall of transparent and / or translucent material, generally glass, or an assembly of several walls, for example two or even three walls separated two by two by a layer of air or insulating gas. Such assemblies of two or three walls such as glazed walls are called double glazing and triple glazing respectively.

[0006] Glazing units are also known comprising vertical and / or horizontal connecting elements made of wood, plastic material(s) or metal, fixed to external surfaces or in the thickness of the glazing. These connecting elements are commonly called "crosspieces" and can be used to connect a plurality of glass plates together, for example, to obtain a larger surface area of ​​joinery, to reinforce the joinery or even to serve as ornaments.

[0007] The frame and the structure of the leaf framing the glazing of the joinery forming the frame are usually made from the same material, the material being able to be wood, and / or one or more plastic material(s), for example polyvinyl chloride (PVC), and / or one or more metallic material(s), for example aluminum.

[0008] We know of various methods today for ensuring the dismantling of joinery, in particular for recovering the glazing for recycling.

[0009] To recover the glazing from a joinery, it is known to lift the joinery and strike it on the ground until one of the four corners of the joinery breaks, so that the frame is at least partially detached from the glazing. Then, the remaining edges of the joinery are manually detached. The glazing thus obtained still includes a part of the connecting elements of the joinery which must be removed such as seals or other materials. Finally, the portions of the glazing which are in contact with the connecting elements must be washed or even cut to allow its recycling.

[0010] Such a process is often carried out by hand and can be dangerous for the operator who carries it out, who can injure himself by hitting the woodwork. Furthermore, the various steps to follow make the extraction of the glazing long and tedious, and therefore expensive. Finally, putting the glazing in contact with the ground alters the cleanliness of the glazing and limits its reuse or, if necessary, requires at least one additional cleaning step.

[0011] A known alternative is to perform a deglazing. To do this, the operator dismantles the joinery in the reverse order to its assembly, starting by removing the glazing beads from the joinery, then removing the glazing by pressure. However, the glazing obtained generally includes residues of the connecting elements which must be removed according to the process described above. This process, although safer for the operator, is time-consuming, and does not allow the separation of the glazing from joinery on the assembly line.

[0012] Another possibility is to carry out a de-glazing in a dedicated sorting platform. However, sending the joinery to the platform generates additional costs, and consequently pollution of the glazing due to the tools used. In such a configuration, the recovered glazing does not then meet the recycling standards to be respected. Statement of the invention

[0013] The invention aims to remedy all or part of the drawbacks of the state of the art by proposing in particular a solution making it possible to recover the glazing from the joinery in a single step while maintaining a level of purity making it possible to ensure its recycling without requiring tedious operations of cleaning the material constituting the glazing.

[0014] To do this, according to a first aspect of the invention, a method of cutting a joinery by a cutting device is proposed, the joinery being of the type comprising at least one frame and one glazing, the method being remarkable in that it comprises a step of cutting the glazing of the joinery by a cutting tool along the frame and at a predetermined distance from said frame so as to separate a main portion of the glazing.

[0015] Cutting the glazing at a predetermined distance from the frame has the technical advantage of making it possible to recover in a single step a portion of the glazing that can be used in recycling channels without having to carry out one or more additional steps of dismantling the fastening elements of the joinery or cleaning the glazing, as is common in the prior art. This main portion of the glazing then designates a part of the glazing that is relatively pure and can be recycled without any other form of cleaning and does not require additional operations before recycling. It is thus easy to obtain, from a joinery assembled from a glazing with a frame, clean glass, that is to say cullet, ready to be recycled.

[0016] The term "cutting" means the action of separating into pieces in a controlled manner and following a given cutting path. This cutting path or line followed by the cutting tool is located at a predetermined distance from an edge of the frame, preferably at a predetermined distance substantially constant along the associated edge of the frame.

[0017] According to one embodiment, the predetermined distance is less than or equal to 100 mm, preferably less than or equal to 50 mm and / or greater than or equal to 5 mm, preferably greater than or equal to 10 mm, for example equal to 20 mm.

[0018] Such a predetermined distance for cutting the joinery makes it possible to limit the presence of connecting elements in the main portion of glazing recovered for recycling. This predetermined distance is evaluated to ensure, on the one hand, that glass can be collected guaranteeing the least possible impurity to meet the recycling problem, and on the other hand, that a maximum quantity of clean glass can be collected.

[0019] According to one embodiment, the glazing is completely delimited by the frame, the glazing constituting an interior portion of the frame. In other words, in such a configuration, the frame delimits a closed contour surrounding the glazing. In this case, the cutting tool moves along a cutting path located at a predetermined distance from an interior edge of the frame. According to another embodiment, the glazing is partially delimited by the frame.

[0020] According to one embodiment, the frame comprises at least part of a frame and / or a structural part of the opening, the frame being linked to the glazing by elements connecting elements. These connecting elements can be of different types and perform different functions: for example, to ensure the glazing is fixed in the frame, the correct positioning in the frame, the seal between the frame and the glazing, etc. The connecting elements can include, for example, profiles, sealing gaskets, an interlayer profile, a glazing bead, etc.

[0021] According to one embodiment, the frame of the joinery comprises an assembly of wooden parts and / or parts made of metallic material(s) and / or parts made of plastic material(s).

[0022] According to one embodiment, the method comprises, after the step of cutting the glazing, a step of cutting the frame at least by the cutting tool into several pieces.

[0023] According to a preferred embodiment, the size of the cut pieces of frame is predetermined. Preferably, substantially rectilinear pieces of the frame will be cut.

[0024] According to one embodiment, the method comprises, prior to the step of cutting the glazing, a step of immobilizing the joinery by position-holding devices. Preferably, the position-holding devices comprise horizontal immobilization means and vertical immobilization means. The position-holding devices comprise, for example, one or more jaws to ensure immobilization in a support plane of the joinery, preferably of the frame, and / or fixing clamps to ensure vertical immobilization of the joinery, in particular of the frame, before the step of cutting the glazing.

[0025] The step of immobilizing the joinery has the advantage of facilitating and accelerating the step of cutting the glazing. In particular, if the cutting process is automated, the immobilization step makes it possible to position the joinery relative to the cutting tool to collect the largest possible main portion of glazing. Furthermore, such position-holding devices make it possible to guarantee the precision of the cutting.

[0026] Preferably, the holding devices comprise at least: • a movable jaw for positioning the joinery in relation to the cutting tool and at least one fixed jaw for maintaining the joinery in a horizontal position and / or • fixing clamps to keep the woodwork in at least a vertical position.

[0027] According to one embodiment, the grasshoppers are connected to jacks controlled remotely by a solenoid valve. The grasshoppers are movable between an open position, during which the grasshoppers are at a distance from the woodwork, and a closed position, during which the joinery is blocked horizontally. Of course, the clamping clamps can be replaced in practice by any means of immobilization capable of gripping an upright of the joinery frame, preferably a single upright.

[0028] According to one embodiment, the method comprises, prior to the step of immobilizing the joinery, a step of conveying the joinery into the cutting device by a conveyor.

[0029] The presence of a conveyor makes it possible to automatically convey the joinery into the cutting device. In particular, for an automated cutting process, the conveyor makes it possible to bring and load joinery into the cutting device at regular time intervals or on command in order to carry out the cutting of joinery on a production line.

[0030] According to one embodiment, the conveyor is of the belt conveyor or roller conveyor type.

[0031] According to one embodiment, the position holding devices comprise at least one positioning stop in addition to the fixing clamps. The stop is movable between a rest position, not stressed, and a locking position, during which the stop is constrained by the joinery and stops the joinery in translation. Preferably, the positioning stop comprises a bolt constrained by a spring. When the joinery is loaded into the cutting device, using the aforementioned stop, said stop can be positioned on the conveyor path of the joinery in order to provide an axial locking function for the joinery.

[0032] According to one embodiment, the method comprises, after the step of cutting the glazing, a step of collecting the main portion of the glazing to be recycled, preferably by gravity.

[0033] Advantageously, the step of collecting the main portion of the glazing is prior to the step of cutting the frame, so as to limit the presence of impurities in the main portion of the glazing in pieces.

[0034] According to one embodiment, the main portion of the glazing cut from the joinery is recovered, in the form of cullet, in a first collection bin provided for this purpose. Preferably, the first recovery bin is located vertically below the joinery when the joinery is held in position by the cutting device, so that once the main portion of the glazing has been cut, it falls by gravity directly into the first collection bin as the step of cutting the glazing is carried out.

[0035] According to one embodiment, the method comprises a step of collecting the frame of the joinery after extraction of the main portion of the glazing, preferably a step of collecting the cut pieces of frame. The joinery thus collected includes at least the frame and a portion of the glazing remaining attached to the frame by the connecting elements and which cannot be recycled as is.

[0036] Advantageously, after the step of collecting the main portion of the glazing, a discharge conveyor covers the first collection bin. The holding devices release a portion of the frame of the remaining joinery, which is then discharged into a second collection bin for collection. In this way, sorting of the collection between the main portion of the glazing on the one hand and the frame of the joinery on the other hand is guaranteed.

[0037] According to another aspect of the invention, it relates to a device for cutting joinery of the type comprising at least one frame and one glazing, remarkable in that it comprises at least one cutting tool, the cutting device being remarkable in that it is configured to implement the cutting method as described previously.

[0038] Such a cutting device has the advantage of being able to be integrated into a joinery dismantling line.

[0039] According to one embodiment, the cutting device comprises position holding devices, the position holding devices configured to immobilize the joinery at least during the step of cutting the glazing of the joinery by a cutting tool, the position holding devices preferably comprising horizontal immobilization means and vertical immobilization means.

[0040] According to one embodiment, the position holding devices comprise at least one fixed jaw configured to receive an upright of the joinery as a stop and a movable jaw, the movable jaw comprising a bearing surface configured to locally support vertical forces of the joinery in the cutting position, the movable jaw preferably being configured to move during the cutting step so that a distance between the bearing surface and the cutting tool during the step of cutting the glazing is maintained at a distance less than a predetermined distance.

[0041] According to one embodiment, the vertical immobilization means are configured to vertically grip a single upright of the joinery frame.

[0042] According to one embodiment, the cutting device comprises a main chassis comprising: • an upper part equipped with the cutting tool; • an intermediate part delimiting a work area to accommodate the joinery, the intermediate part preferably comprising the devices for holding the joinery in position during the glazing cutting step of the carpentry by the cutting tool along the frame and at a predetermined distance from said frame; • a lower supporting part, the lower part delimiting an evacuation zone of at least the main portion of the glazing after cutting.

[0043] According to one embodiment, the lower, intermediate and upper parts are superimposed vertically, the intermediate part being arranged between, preferably interposed between, the lower support part and the upper part. Thus, the cutting device has a compactness facilitating its integration into a joinery dismantling line or into a sorting plant.

[0044] According to one embodiment, the chassis, preferably each of the upper, intermediate and lower parts, has a structural frame composed of crosspieces forming a trellis, preferably metallic. Preferably, the chassis is entirely made of crosspieces, forming profiles, the chassis preferably being surrounded at least in part by a protective casing.

[0045] According to one embodiment: - the upper part of the chassis comprises a gantry movable relative to the chassis on which the cutting tool is mounted, the gantry preferably being movable in translation at least horizontally and vertically; and / or - the work area comprises an openwork horizontal support to allow the passage of the main part of the joinery glazing. Preferably, the horizontal support comprises an assembly of profiles; and / or - the discharge area is configured to receive at least the first and second collection bins, and preferably the discharge conveyor.

[0046] According to one embodiment, the cutting tool comprises at least one rotary saw. Alternatively or in addition, the cutting tool may comprise at least one laser.

[0047] According to one embodiment, the cutting tool further comprises a metal arm connected to a motor, the arm being able to move in horizontal and vertical directions relative to the working area of ​​the cutting device. This arm may be a multi-axis robotic arm.

[0048] According to one embodiment, the cutting device comprises a control unit for moving the cutting tool according to input data, all or part of the input data being entered manually and / or automatically. Brief description of the figures

[0049] Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended figures, which illustrate: • [Fig.l]: a front isometric perspective view of a cutting device according to an embodiment of the invention; • [Fig.2]: a rear isometric perspective view of the cutting device of [Fig.l]; • [Fig.3]: a side view of the cutting device of [Fig.l]; • [Fig.4]: an isometric perspective view of part of the device cutting of [Fig.l]; • [Fig.5]: an exploded and isometric perspective view of part of the cutting device of [Fig.l]; • [Fig.6]: an isometric perspective view of part of the device cutout of [Fig.l] equipped with a collection bin for collecting the glazing to be recycled; • [Fig.7]: a detailed view of [Fig.4]; • [Fig.8]: a detailed view of [Fig.4]; • [Fig.9]: a detailed view of the cutting device of [Fig.l]; • [Fig. 10]: a detailed view of the cutting device of [Fig.l]; • [Fig. 11]: a view of the working area of ​​the cutting device of [Fig.l] in which a cutting carpentry is located; • [Fig.l2A]: a diagram of a carpentry seen from above according to one embodiment; • [Fig.l2B]: a diagram of the carpentry of [Fig.l2A], sectional view.

[0050] For clarity, identical or similar elements are identified by identical reference signs throughout the figures.

[0051] In the description and the claims, to clarify the description and the claims, the terminology longitudinal, transverse and vertical will be adopted without limitation with reference to the trihedron X, Y, Z indicated in the figures, detailed description of an embodiment

[0052] Figures 1 to 11 illustrate different figures of a device 100 for cutting joinery according to the invention.

[0053] The cutting device 100 forms a machine tool configured to be able to make cuts on a joinery 10 of the type comprising at least one frame 11 and a glazing 12, the joinery then being in an assembled state of the glazing with the frame 11.

[0054] The cutting device 100 according to the invention is designed to separate a clean part 12A of the glass 12 from the frame 11 of a joinery 10 in order to facilitate its recycling. During the process, the clean glass falls into a collection bin, conventionally a skip, then the remaining part of the joinery 10 comprising the frame is evacuated by an evacuation conveyor to another side collection bin.

[0055] The cutting device 100 comprises a main chassis 101 forming a frame for a cutting tool 20.

[0056] The frame 101 has a structural frame composed of crosspieces or profiles forming a trellis, preferably metal. Preferably, the frame 101 has a tubular structure made of metal, for example steel, aluminum or stainless steel.

[0057] The chassis 101 comprises height-adjustable feet, which makes it possible to compensate for any difference in height between a high point and a low point of the platform on which the chassis rests. Of course, this configuration is adaptable depending on the location where the cutting device 100 is to be placed. Once the chassis 101 of the cutting device 100 is positioned stably on the ground, additional fixing means are used to lock its anchoring and absorb vibrations during use of the machine tool.

[0058] The chassis 101 is mechanically welded and may have undergone a surface treatment: for example, it may be painted, galvanized or powder-coated. The chassis 101 may be covered with protective elements such as sheets, mesh or plexiglass. In this embodiment, as illustrated in part in Figures 1, 2 and 3, the chassis is surrounded by a protective casing 102 forming a protective covering and secured to the chassis 101. The casing 102 comprises in particular metal plates joined together to form an envelope serving to protect both the entire cutting device 100, but also the user by making it possible to stop any possible projectile.

[0059] The housing 102 also includes windows allowing the user to monitor the progress of the cutting operation. These windows are preferably formed from plexiglass.

[0060] It will be noted that in the figures the casing 102 is shown in a cutaway view in order to improve their readability.

[0061] Depending on requirements, the chassis 101 may be equipped with wheels or casters sized according to the environments of use.

[0062] The frame 101 thus forms a structure of the machine tool configured to delimit at least three vertically superimposed parts or sub-assemblies, among which: • an intermediate part 103 delimiting a work zone Z2 to accommodate the carpentry 10 to be cut; • an upper part 105 located vertically above the intermediate part 103 and provided with the cutting tool 20; and • a lower supporting part 104 located vertically below the intermediate part 103, the lower part 104 delimiting an evacuation zone ZI of at least a main portion 12A of the glazing 12 to be recycled after cutting.

[0063] The frame 101 makes it possible to ensure the structural connection between the different sub-assemblies of the cutting device 100, which are the upper 105, intermediate 103 and lower 104 parts.

[0064] The chassis 101 comprises a gantry 150 movable relative to the chassis on which the cutting tool 20 is mounted. The gantry 150 is supported by the chassis 101. In particular, the upper part 105 comprises the gantry 150 which is configured to carry the cutting tool 20 and move it in the three dimensions of space. The chassis 101 of the upper part 105 comprises fixing points for the gantry 150, this part of the chassis 101 forming a chair for the robotic gantry 150 provided with the cutting tool 20.

[0065] The gantry 150 comprises at least one arm 151 connected to a motor, and a rotary saw connected to a lower end of the arm 151 (metallic). In addition to moving the cutting tool 20 in space, the gantry 150 is configured to pivot the cutting tool 20 about the vertical axis of the metal arm.

[0066] The gantry 150 comprises actuating and guiding means for moving the cutting tool 20 in the three dimensions of space. For example, the gantry 150 here comprises three motors allowing the actuation of worm screws in order to obtain a translation along each of the horizontal axes X, Y and the vertical axis Z. Finally, a separate motor 152 is positioned on a support of the cutting tool 20 to allow its rotation along the vertical axis Z, the support of the cutting tool 20 comprising the guide arm 151, here single-axis and oriented vertically.

[0067] In the example illustrated, the cutting tool 20 comprises a rotary saw 21, in particular a grinder. Alternatively or in addition, it is possible to cut the glazing with other cutting tools 20, for example a laser.

[0068] The intermediate part 103 delimits a work zone Z2 for receiving and cutting the joinery 10 to be cut. The cutting device 100 comprises a lateral opening 106 communicating between the exterior and the work zone Z2 of the intermediate part 103. This opening 106 makes it possible to ensure at least the entry of a given joinery 10 into the work zone Z2.

[0069] The cutting device 100 comprises a support 40 on which the joinery 20 rests in the work zone Z2 during the cutting step, this support 40 is housed in the intermediate part 103. Furthermore, to ensure the immobilization of the joinery 10 during the cutting step, the cutting device 100 comprises position holding devices 30 comprising horizontal immobilization means and vertical immobilization means. According to this embodiment, the cutting device 100 comprises a fixed jaw 31 configured to receive the joinery 10 in abutment and a movable jaw 32 for positioning the joinery 10 relative to the cutting tool, this to participate in maintaining the joinery 10 in a horizontal position. In practice, the movable jaw 32 can be used for the sole purpose of participating in the support 40 of the joinery 10: in this case its mobility allows the tool to be adapted to a large number of dimensions of joinery 10. Alternatively or in addition, the fixed jaw 31 and movable jaw 32 can horizontally grip the joinery 10, in particular the frame 11 of the joinery 10, in the manner of jaws. In any event, the fixed jaw 31 receives in contact and in abutment one side of the joinery 10. The fixed and movable jaws 31, 32 extend parallel to each other.

[0070] The movable jaw 32 comprises a mechanically welded assembly, here made of aluminum. These elements translate over the entire chassis 101 by means of a transmission system, for example a belt 321, driven by an electric motor 322 (see [Fig.8]). This assembly therefore allows the positioning of the joinery 10 on the chassis 101, it is then held in position by one or more fixed jaws 31.

[0071] The entire movable jaw 32 is welded onto a plate configured to be moved by the transmission system, namely the belt 32 1. Other transmission means may be used in addition or alternatively, for example a worm screw system and / or notched drive (rack, etc.) making it possible to implement greater forces and limit maintenance. The associated motor 322 as well as the transmission system are also fixed to the chassis 101.

[0072] The movable jaw 32 comprises a bearing surface 42 configured to locally support vertical forces of the joinery 10 in the cutting position, the movable jaw 32 being configured to move during the cutting step so that a distance between the bearing surface 42 and the cutting tool 20 during the step of cutting the glazing 12 is maintained at a distance less than a predetermined distance. Such a configuration makes it possible to limit a pinching effect of the blade of the cutting tool 20 by the glazing 12 during cutting. The movement of the movable jaw 32 relative to the fixed jaw 31 is a horizontal translation. The fixed and movable jaws 31, 32 extend here parallel to each other regardless of their respective positions.

[0073] The cutting device 100 also comprises compression means, here clamping clamps 35, for example pneumatic, configured to ensure vertical pressure on the joinery 10, preferably on at least one upright of the frame 11 already resting on the support 40. The frame 11 is thus clamped vertically in the work zone Z2 and kept fixed at least vertically during a step for cutting the glazing 12, clamped between its support 40 and the compression means 35. The compression means are configured to ensure at least vertical immobilization on a single upright of the frame 11 of the joinery 10. This makes it easier to cut the frame 11 held in overhang. In particular, the compression means, here the clamps 35, are integral with the fixed jaw 31 and, in the immobilization position, firmly hold the upright of the frame 11 which is in contact and in abutment against the fixed jaw 31 which also rests on an associated angle iron 41. Such a configuration makes it possible to implement the step of cutting the frame 11 held in overhang at the upright fixed to the fixed jaw 31. Of course, the clamps 35 can be replaced by any other device ensuring the same function of compressing the associated upright to hold the frame 11 of the joinery 10.For example, it may be one or more clamps and / or a compression bar or additional mobile jaw translating, for example, vertically to compress said upright between this additional mobile jaw and the angle iron 41 in the manner of jaws.

[0074] These vertical immobilization means are configured to vertically grip a single upright of the frame of the joinery 10, on the side of the fixed jaw 31, both during the step of cutting the glazing 12 of the joinery 10, but also during the step of cutting the frame 11. Thus, the last piece of frame 11 collected at the end of the step of cutting the frame 11 corresponds to the upright of the frame 11 held in overhang and gripped along the fixed jaw 31 then released by the immobilization means 35 at the end of the step of cutting the frame 11.

[0075] The clamping or clamping of the part is ensured by the friction on a contact pad 351 of each of the clamping clamps 35. This friction of the pads 351 on the frame 11 of the joinery 10 in the clamping position also contributes to its horizontal immobilization. This makes it possible to simplify the horizontal clamping mechanism with the use of two jaws 31, 32 of which the movable jaw 32 ensures a single function of support 40 of the joinery and the clamps provided with the pads 321 are configured to guarantee the clamping or holding in position of the joinery 10 during the cutting step by the cutting tool 20. The use of compression means 35 ensuring friction against the frame makes it possible to guarantee effective immobilization of the joinery for machining while simplifying the holding devices.

[0076] The grasshoppers 35 are actuated by jacks each controlled remotely synchronously by a control unit 200.

[0077] The support 40 comprises bearing surfaces 41, 42, carried here by angles. In particular, a first bearing surface 41 is carried by an angle iron secured to the fixed jaw 31 and extending parallel to said fixed jaw 31. The other bearing surface 42 is carried by an upper surface of the movable jaw 32 but can also be carried by an angle iron secured to said movable jaw 32. The use of discontinuous bearing surfaces 41, 42 carried by the fixed and movable jaws 31, 32 makes it possible to leave an intermediate space 43 free for evacuation after machining which will be described below.

[0078] The cutting device 100 comprises a conveyor 140 configured to convey the joinery 10 from the outside into the work zone Z2. In particular, for a cutting method implemented in an automated manner, the conveyor 140 makes it possible to feed the cutting device 100 with joinery 10 at regular time intervals or on demand in order to carry out the operations of cutting joinery 10 in series. According to this embodiment, the conveyor 140 is of the gravity roller conveyor type. The rollers may or may not be motorized. In the case where they are motorized, at least some of them may be motorized to ensure the movement of a given joinery 10 placed on the conveyor 140 towards the work zone Z2 while limiting the efforts of the operator.The 140 gravity roller conveyor comprises a 141 roller table and four adjustable feet 142, which can be adjusted in height, i.e. each can be adapted to the user's height.

[0079] The conveyor 140 comprises locking means such as pins located on the feet 142 of the conveyor 140 to lock the height of the table 142.

[0080] The work zone Z2 is not provided with conveyor rollers. However, the conveyor 140 is arranged outside relative to the frame 101 and the casing 102. This facilitates its handling and maintenance and is placed directly opposite the opening 106. Preferably the conveyor roller located at a proximal end of the conveyor 140 closest to the opening 106 is motorized to ensure the movement of the joinery into the work zone Z2 on the support 40.

[0081] The conveyor 140 defines a conveying plane Pc on which a given joinery 10 rests, the cutting device 100 being configured so that the conveying plane Pc is located at a height greater than or equal to a working plane Pw defined by the support 40 on which a given joinery 10 rests during the machining operation. The conveyor is oriented so as to convey the joinery axially along a longitudinal axis parallel to a longitudinal reference axis X. The fixed and movable jaws 31, 32 each extend parallel to the longitudinal reference axis X, substantially in the extension of the conveyor 140. Such a configuration facilitates the movement of the joinery 10.

[0082] In order to limit the user's efforts, the conveyor 140 can be adjusted in height thanks to its feet 142 and a specific positioning so that the rollers of the conveyor are aligned with or slightly above the bearing surface 42 of the movable jaw 32.

[0083] The conveyor 140 comprises brakes for locking the conveyor table 141. The brakes here lock the rollers of the conveyor 140 and can be actuated before loading the joinery 10 in order to facilitate its installation by a user.

[0084] A movable stop 44 equips the cutting device 100 to allow the joinery 10 to be positioned on the support 40 in a cutting or machining position.

[0085] The stop 44 is positioned on the path of the joinery on its support 40 and is movable between a retracted position in which it does not obstruct the movement of said joinery 10 and a deployed blocking position, during which the stop 44 forms an obstacle to the movement of the joinery 10 on the support 40. The movable stop 44 is oriented so as to form a stop to the axial movement of the joinery, in the longitudinal direction parallel to the longitudinal reference axis X.

[0086] In practice, the movable stop 44 comprises a spring-mounted bolt. The bolt is configured to lower when the joinery 10 is loaded onto the support 40 in the work zone Z2 and then returns to its deployed position to serve as a stop on the translation axis of the joinery 10 when it is loaded from the conveyor 140 until it is positioned on the support 40.

[0087] According to the invention, once the joinery 10 is positioned on the support 40 and immobilized in the machining position by the position-holding devices 30, the cutting device 100 implements a step of cutting the glazing 12 of the joinery 10 by the cutting tool 20 along the frame 11 and at a predetermined distance d from said frame 11 so as to separate a main portion 12A of the glazing 12.

[0088] Once a central portion 12A of glass has been cut from the joinery 10, this cut portion 12A is collected in a first collection tray provided for this purpose (see [Fig.6]). The first collection tray is located vertically below the support 40, so that once the main portion 12A of the glazing has been cut, it falls by gravity directly into the first collection tray as the glazing cutting step is carried out. Since the support 40 is not formed by a solid support plane but by discontinuous and spaced support surfaces 41, 42, a space 43 between the support surfaces 41, 42 allows the cut glass 12A to fall into the first tray through this said space 43.

[0089] The chassis 101 comprises in the lower part 104 a lateral opening 107 allowing the first collection bin to be placed under the chassis 101 in order to to be able to recover the pieces of glass from the cut portion 12A during cutting. This lateral opening 107 is located on the opposite side longitudinally with respect to the frame 101 to the opening 106 for loading the joinery 10 in the work area Z2.

[0090] Once the main portion 12A has been cut and collected, the rest of the joinery 10 remains immobilized in the machining position by the position-holding devices 30, in particular thanks to the frame 11 held by the clamping clamps 35. The frame 11 remains assembled and secured to a peripheral portion 12B of the glazing 12 not collected after the first cutting and then undergoes a step of cutting the frame 11 at least by the cutting tool 20 into several pieces.

[0091] During this step of cutting the frame 11, the pieces are collected as they go. For this, the cutting device 100 comprises a second conveyor forming a discharge conveyor 160. This discharge conveyor 160 is located in the discharge zone Z1, located in the lower support part 104 itself located under the intermediate part 103.

[0092] The discharge conveyor 160 is movable between a deployed position in which it is located vertically under the work zone Z2 to collect the cut pieces of frame by gravity and a retracted position so that in the retracted position of the discharge conveyor 160, the latter does not create an obstacle to the fall of the main portion 12A of the glazing for recycling. In other words, in the deployed position, the discharge conveyor 160 at least partially covers the first collection bin, the discharge conveyor 160 being configured to transport the cut pieces of frame 11 to a second collection bin (not shown) separate from the first collection bin.In this embodiment, the discharge conveyor 160 comprises a belt made of flexible material and laterally connected on either side of a deployment direction to actuating means which comprise, for example, a motor and a drive by suitable means such as chains and / or belts. The discharge conveyor 160 is oriented so as to convey the cut frame pieces axially along a transverse axis parallel to a transverse reference axis Y. Thus, the discharge conveyor 160 and the arrival conveyor 140 are arranged substantially at right angles in the horizontal plane to reduce the size of the machine and facilitate collection.

[0093] Figures 12A and 12B illustrate a diagram of a joinery seen from above in an assembled state of the glazing 12 with the associated frame 11, and surrounding the glazing 12. During the step of cutting the main or central portion 12A of the glazing 12, the cutting tool 20 makes a cut in the glazing 12 along a cutting path. L which runs along the frame 11 at a predetermined distance d from it. The predetermined distance d is here equal to 20 mm.

[0094] Such a cutting distance d of the joinery 10 makes it possible to limit the presence of connecting elements in the main portion 12A of glazing recovered for recycling while collecting the maximum amount of glass with the least impurity.

[0095] The cutting device 100 includes emergency stop buttons to ensure the safety of the machine tool configured to immediately stop the cutting device 100 regardless of the step in progress.

[0096] The operation of the cutting device will be better understood in light of the following description.

[0097] In an initial step, an operator places a joinery 10 on the arrival conveyor 150. The joinery comprises a glazing surrounded by a frame 11 assembled together.

[0098] The cutting device 100 comprises a control unit 200 for controlling the cutting tool 100 as a function of input data, all or part of the input data being entered manually and / or predetermined upstream. This control unit is connected to an indicator means 202, here of the colored light type, for informing an operator of an operating state of the cutting device 100. For example, a red light indicates an alert state, a yellow light indicates when the machine 100 is in operation, and a green light indicates when the machine is ready for use.

[0099] Also illustrated in Figures 12A and 12B are various measured dimensions used for these input data, including: • A: width of the joinery 10 resting against the fixed jaw 31. The hinges are not included in this measurement; • B: length of the carpentry 10; • C: width of the left upright of the carpentry 10; • D: width of the right upright of the carpentry 10; • E: width of the lower crosspiece of the joinery 10; • F: width of the upper crosspiece of the joinery 10; • G: maximum thickness 10.

[0100] Thus, to determine at least some of the input data, the operator makes measurements of the joinery 10 and inserts them into the machine program via a control interface 201 of the control unit 200. The control interface 201 forms a human-machine interface. This measurement step can be implemented in different ways, alternatively and / or in a complementary manner: • manually directly using the control interface 201 of the control unit 200, the control interface 201 being able to be a conventional touch control screen; and / or • upstream of the cutting step, by sensors configured to perform a dimensional reading of the woodwork, at least part of the sensors being able to be furthermore embedded on the head of the cutting tool 20 thus allowing identification during the cutting step; and / or • during the cutting stage, by sensors with real-time tracking during the cutting process: such sensors are generally complementary to ensure measurement redundancy and guarantee cutting safety.

[0101] The opening 106 comprises a door formed by a panel, preferably transparent and / or translucent, placed in the continuity of the casing 102 in order to ensure the same protection despite the opening 106. This panel is preferably made of plexiglass material. The opening of this door can be conditioned by certain parameters, such as the stopping of the cutting tool 20, this to guarantee the safety of the cutting device 100. Locking means thus block the door in the closed position when the predefined conditions are not met.

[0102] Once the step of rating or dimensioning the joinery has been carried out, the door of the opening 106 is opened and then the joinery is inserted into the work zone Z2 through the opening 106. The joinery 10 is inserted until it comes into abutment against the movable wedging stop 44.

[0103] The door of the opening 106 is then closed, and if necessary locked.

[0104] The position-holding devices 30 are controlled to immobilize the joinery 10 both horizontally and vertically. The jaws 31, 32 as well as the clamping clamps 35 are thus positioned so as to immobilize and lock the position of the joinery 10 in the work zone Z2.

[0105] Several preparation steps can be implemented beforehand before loading the joinery onto its support 40 in the work zone Z2. For example, during this step of loading the joinery 10 it is particularly appropriate to: • dismantle accessories that may hinder the passage of the cutting tool 20, for example hooks, ventilation grilles, curtain supports, etc.; and • remove the handles, in particular if they protrude from the uprights.

[0106] Preferably, a delay step between the dimensioning step and the step of loading the joinery onto the support 40 in the work zone Z2 is implemented, in particular to wait for the end of the movement of the movable jaw 32 carrying the support surface 42 participating in the support 40 of the joinery 10.

[0107] For better immobilization, the joinery 10 can be loaded onto the support 40 in the work zone Z2 with the handles facing upwards, on the fixed jaw side 31 and the hinges on the movable jaw side 32.

[0108] It is advisable to check before the step of cutting the glazing 12 that the joinery 10 is in abutment against the fixed jaw 31 and resting on the corresponding angle iron 41 of the support 40, over its entire length.

[0109] A step of placing it against the movable stop 44 is then implemented, consisting of bringing the joinery 10 against the movable stop 44 after it has been lowered to the low position and then repositioned in the deployed position.

[0110] The control of the cutting step is then driven by the control unit.

[0111] It will be noted that the cutting device 100 comprises sensors configured to detect predetermined glass categories and adapt cutting parameters accordingly if necessary (single or double glazing, tempered glass, laminated glass, etc.). Such detection of the type of glass also makes it possible to check in advance that the collected glass and the intended collection bin correspond, this to guarantee the sorting of glass by glass category.

[0112] Firstly, the cutting step consists of cutting the glazing 12 of the joinery 10 by the cutting tool 20 along the frame 11 and at a predetermined distance d from said frame 11 so as to separate a main portion 12A of the glazing 12. This makes it possible to obtain only clean glass, i.e. cullet. The cutting makes it possible to avoid polluting the contents of the first collection bin, here a skip, with the connecting elements used to fix the glazed part 12 to the frame 11.

[0113] Once the glazed part 12A has been cut, a belt of the evacuation conveyor 160 is deployed in the evacuation position under the joinery 10, between the support 40 of the work zone Z2 and the first collection bin, in order to prevent elements from polluting the first collection bin containing the pure glass.

[0114] The control tool is then driven to cut the frame 11 of the joinery, still assembled with a peripheral edge 12B of the glazing 12, into several pieces of different sizes according to the user's preference.

[0115] The pieces then fall onto the conveyor belt of the discharge conveyor 160 by gravity effect, which was previously unfolded in the discharge position.

[0116] Once the cutting into pieces of the frame 11 is complete, the conveyor discharges the cut elements into the second collection bin, separate from the first collection bin and arranged on the side of the cutting device 100.

[0117] Thus, the conveyor belt of the evacuation conveyor 160 is the last cutting operation of the joinery 10. Indeed, it allows the evacuation of the frame 11 once the glass has been cut. This belt has two positions, a first for recovering the frame 11, a second for evacuating the frame. A geared motor 161 ensures the movements between these two positions allow the frame 11 to fall in pieces into the second collection bin positioned beforehand by the user.

[0118] Such a machine tool 100 makes it possible, in addition to collecting a relatively pure material or glass, but also to be able to sort the materials to be recycled into the various collection bins. Such a modular discharge conveyor 160 is particularly advantageous in that it makes it possible to ensure the sorting of the collected elements in a simple and efficient manner.

[0119] Naturally, the invention is described in the above by way of example. It is understood that those skilled in the art are able to carry out different variant embodiments of the invention without departing from the scope of the invention.

[0120] It is emphasized that all features, as they emerge for a person skilled in the art from the present description, the drawings and the attached claims, even if concretely they have only been described in relation to other determined features, both individually and in any combinations, can be combined with other features or groups of features disclosed herein, provided that this has not been expressly excluded or that technical circumstances make such combinations impossible or meaningless.

Claims

Claims

1. Method for cutting a joinery (10) by a cutting device (100), the joinery (10) being of the type comprising at least one frame (11) and one glazing (12), the method being characterized in that it comprises: - a step of cutting the glazing (12) of the joinery (10) by a cutting tool (20) along the frame (11) and at a predetermined distance (d) from said frame (11) so as to separate a main portion (12A) of the glazing (12).

2. Cutting method according to claim 1, characterized in that it comprises, after the step of cutting the glazing (12), a step of cutting the frame (11) at least by the cutting tool (20) into several pieces.

3. Cutting method according to claim 1 or 2, characterized in that the predetermined distance (d) is less than or equal to 100 mm, preferably less than or equal to 50 mm and / or greater than or equal to 5 mm, preferably greater than or equal to 10 mm, for example equal to 20 mm.

4. Cutting method according to any one of the preceding claims, characterized in that it comprises, prior to the step of cutting the glazing (12), a step of immobilizing the joinery (10) by position holding devices (30), the position holding devices (30) preferably comprising jaws (31, 32) and / or fixing clamps (35).

5. Cutting method according to claim 4, characterized in that it comprises, prior to the step of immobilizing the joinery (10), a step of conveying the joinery (10) into the cutting device (100) by a conveyor (140).

6. Cutting method according to any one of the preceding claims, characterized in that it comprises, after the step of cutting the glazing (12), a step of collecting the main portion (12A) of the glazing (12), preferably by gravity.

7. Cutting method according to any one of the preceding claims, characterized in that it comprises a step of collecting the frame (11) from the joinery (10) after extraction of the main portion (12A) of the glazing (12), preferably a step of collecting the pieces of frame (11) cut out.

8. Device (100) for cutting a joinery (10) of the type comprising at least one frame (11) and a glazing (12), characterized in that it comprises at least one cutting tool (20), the cutting device (100) being characterized in that it is configured to implement the cutting method according to any one of the preceding claims.

9. Cutting device (100) according to the preceding claim, characterized in that it comprises position holding devices (30), the position holding devices (30) configured to immobilize the joinery (10) at least during the step of cutting the glazing (12) of the joinery (10) by a cutting tool (20), the position holding devices (30) preferably comprising horizontal immobilization means and vertical immobilization means.

10. Cutting device (100) according to the preceding claim, characterized in that the position holding devices (30) comprise at least one fixed jaw (31) configured to receive in abutment an upright of the joinery and a movable jaw (32), the movable jaw (32) comprising a bearing surface configured to locally support vertical forces of the joinery (10) in the cutting position, the movable jaw (32) preferably being configured to move during the cutting step so that a distance between the bearing surface and the cutting tool (20) during the step of cutting the glazing (12) is maintained at a distance less than a predetermined distance.

11. Cutting device (100), according to the preceding claim, characterized in that the vertical immobilization means are configured to vertically grip a single upright of the frame (11) of the joinery (10).

12. Cutting device (100) according to any one of claims 8 to 11, characterized in that it comprises a main frame (101) comprising: - an upper part (105) provided with the cutting tool (20); - an intermediate part (103) delimiting a work zone (Z2) to accommodate the joinery (10);

13. - a lower supporting part (104), the lower part (104) delimiting an evacuation zone (Zl) of at least the main portion (12A) of the glazing (12) after cutting. Cutting device (100) according to any one of claims 8 to 12, characterized in that the cutting tool (20) comprises at least one rotary saw (21).

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