Device and Method for Cutting a Solid Material Driven in Movement
The cutting device with a transverse assembly of alternating discoidal blades addresses width limitations and enhances cutting speed and productivity by synchronized orthogonal cutting, optimizing device lifespan and energy use.
Patent Information
- Application Number
- FR2023014324
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2043-12-15
AI Technical Summary
Existing cutting devices for solid materials, such as glass wool, are limited by the width of the pendulum motion of rotating blades, restricting the width of sheets that can be cut and limiting cutting speed and productivity.
A cutting device with a transverse cutting assembly of two discoidal blades, driven by a carriage, allows for orthogonal cutting across the entire width of the sheet, with blades alternating between cutting and non-cutting positions, and synchronized movement with the conveyor speed, enhancing cutting speed and productivity.
The device enables efficient, high-speed cutting of solid materials without width limitations, optimizing device lifespan and reducing electrical energy consumption.
Smart Images
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Abstract
Description
Title of the invention: Device and Method for Cutting a Solid Material Driven in Movement technical field
[0001] The invention relates to a cutting device for a sheet of solid material being moved from a manufacturing area to a storage area and to a method for cutting said products using said cutting device.
[0002] The invention relates in particular to a device for cutting a sheet of a non-powdery solid material carried in motion on a conveyor in a direction, called the conveying direction, parallel to a larger dimension of the sheet and a method for cutting such a sheet of non-powdery solid material carried in motion on a conveyor in said conveying direction.
[0003] The production of insulating panels for construction, made of mineral fibers such as glass wool or rock wool, or of plant fibers, consists of forming a continuous, large sheet of a precursor material of such an insulating material, heating the continuous sheet of such a precursor material for the purpose of finalizing the manufacture of the insulating material and / or drying it flat, and then cutting the formed sheet into insulating panels suitable for commercialization. Technological background
[0004] An example of such a sheet is schematically shown in [Fig. 1] as an illustration of the prior art. As illustrated, the sheet 21 is in the form of a substantially continuous strip progressing along a conveying direction represented by the arrow 5 from a manufacturing area 3. This sheet 21 is then cut, using a cutting device 23 known from the prior art, into smaller panels 22, which are then stacked, packaged, and stored in a downstream area 4 for sale. The panels 22 formed by cutting the sheet 21 have an overall rectangular parallelepiped shape, with the cuts 27 extending perpendicularly to the longest dimension of the sheet.
[0005] A device for cutting a larger sheet of glass wool, conveyed along a conveyor, into smaller panels for shipping is known from patent US2010 / 186562. The device in US2010 / 186562 comprises two rotating discoidal blades that, during cutting, swing in a pendulum motion around a horizontal axis of rotation. Due to this non-linear pendulum motion during cutting, the device in US2010 / 186562 is limited in its use to cutting a sheet of glass wool of a width compatible with the amplitude of the pendulum motion. of each of the blades.
[0006] The invention therefore aims to overcome this drawback.
[0007] The invention therefore aims to provide a device and a method for cutting a sheet of solid material carried in motion, allowing a transverse cutting of the sheet carried in motion, without limitation of the width of the sheet.
[0008] The invention also aims to provide a device and a method for cutting a sheet of solid material driven in motion, allowing an increase in the cutting rate.
[0009] Thus, the invention also aims to provide a device and a method for cutting a sheet of solid material driven in motion, allowing an increase in the speed of movement of the sheet.
[0010] The invention therefore aims to provide a device and a method for cutting a sheet of solid material driven in motion, allowing an increase in the cutting rate of the sheet and the productivity of a production line for panels made of solid material, in particular insulating solid material.
[0011] The invention also aims to provide a device and a method for cutting a sheet of solid material driven in motion, allowing optimization of the lifespan of the device and its constituent elements.
[0012] The invention also aims to provide a device and a method for cutting a sheet of solid material driven in motion, allowing for optimization of electrical energy consumption. Summary of the invention
[0013] The invention relates to a device for cutting a sheet of solid material, moved by a conveyor along a direction, called the conveying direction, parallel to a larger dimension of the sheet, the cutting device comprising: - an assembly, called a transverse cutting assembly, of at least two - in particular two - discoidal blades, each extending in a plane parallel to a direction, called the transverse cutting direction, orthogonal to said conveying direction, - at least one trolley supporting said cross-cutting assembly, - means of driving the trolley according to said conveying direction with a drive speed substantially equal - in particular equal - to a conveying speed of the sheet on the conveyor along said conveying direction, characterized in that; said at least one trolley includes means for driving said assembly of transverse cutting in motion across the entire width of the tablecloth according to said transverse cutting direction, and in that; said cross-cutting assembly includes means for orienting said cross-cutting assembly adapted to, in a first direction of movement of said cross-cutting assembly along said cross-cutting direction, maintain a first blade of said cross-cutting assembly in a lowered position in which the first blade is driven in rotation to cut the sheet transversely over its entire width in the first direction of movement and maintain a second blade of said cross-cutting assembly in a raised position at a distance from the sheet so as not to cut the sheet.
[0014] Throughout the text: - the terms "above" and "below" refer to a device according to the invention in an operational state in which the sheet of loose material is supported by the conveyor due to the forces of gravity, - The terms "downstream" and "upstream" are defined in relation to the direction and sense of conveying the web on the conveyor. The "upstream" part of the device according to the invention corresponds to the supply zone of the cutting device according to the invention with the web of non-powdery solid material, and the "downstream" part of the device according to the invention corresponds to the production, conveying, and storage zone of the panels of said non-powdery solid material cut from the web of solid material by the cutting device according to the invention.
[0015] In certain embodiments, the solid material is a construction material. It may be a thermal and / or acoustic insulating construction material. It may be a solid material comprising mineral fibers, such as glass fibers (glass wool) or rock fibers (rock wool). It may also be a solid material comprising ceramic fibers. It may also be a solid material comprising fibers of plant origin, such as, for example, hemp fibers, flax fibers, cellulose fibers, particularly cotton fibers, wood fibers, and coconut fibers. In these embodiments, the sheet of non-powdery solid material is conveyed by a conveyor, from upstream to downstream, between a production site for the sheet and a storage site for panels of said solid material cut from the sheet.
[0016] In certain embodiments, the conveyor can be of any type. It can be a belt or belt conveyor. Advantageously, the conveyor can be a flat belt conveyor. It can also be a roller conveyor. The conveyor can have any width suitable for receiving and actively conveying a sheet of a non-powdery solid material. In certain embodiments preferential, the conveyor presents a conveying surface that is substantially flat and horizontal.
[0017] According to certain embodiments, the carriage is arranged to extend above the conveyor and transversely to the conveyor across its entire width. The carriage is arranged to allow the conveyor to be transported on the conveyor, to allow the transverse cutting assembly to move across the entire width of the conveyor in the direction of the transverse cutting, and to allow the blades of the transverse cutting assembly to cut the conveyor.
[0018] According to some embodiments, the carriage includes at least one straight guide cross rail for the cross cutting assembly, the cross cutting assembly being driven in transverse movement relative to and on the cross rail by means of a drive device comprising a toothed belt, a chain, a cardan drive or a rack and pinion drive.
[0019] The cutting device according to the invention comprises means for driving the movement of the carriage and said transverse cutting assembly along said conveying direction. The means for driving the movement of the carriage along said conveying direction are configured to allow movement of the carriage and said transverse cutting assembly downstream along said conveying direction so as to accompany the movement of the sheet by the conveyor, at the same speed as the sheet on the conveyor, and to obtain a cut of the sheet along said transverse cutting direction, that is to say a cut orthogonal to the edge of the sheet, despite the movement of the sheet on the conveyor.The drive means for the carriage and the transverse cutting assembly are adapted to drive the carriage and the transverse cutting assembly in motion along the conveying direction at a drive speed equal to the conveying speed of the sheet on the conveyor along the conveying direction. However, the drive means for moving the carriage along the conveying direction are also configured to allow the carriage to move upstream along the conveying direction and to return the carriage and the transverse cutting assembly to a suitable position to allow the initiation of a subsequent transverse cut.
[0020] The means for driving said transverse cutting assembly in movement over the entire width of the sheet according to said transverse cutting direction are means for driving said transverse cutting assembly in rectilinear translation relative to the carriage according to said transverse cutting direction.
[0021] According to certain advantageous embodiments of a cutting device according The invention involves driving the transverse cutting assembly across the entire width of the sheet along the transverse cutting direction. These drive means operate in either of the two opposite directions of movement of the transverse cutting assembly along the transverse cutting direction. The cutting rate is thus increased.
[0022] According to the invention, the at least two discoidal blades of said transverse cutting assembly each extend in a plane parallel to said transverse cutting direction and in a plane not parallel to said conveying direction. In some of these embodiments, the discoidal blades are coplanar. However, nothing prevents, in some of these embodiments, each blade of the transverse cutting assembly from having a chosen inclination to produce a beveled cut. In some embodiments, the discoidal blades extend in a plane orthogonal to said conveying direction.
[0023] According to certain advantageous embodiments of the invention, the orientation means of said transverse cutting assembly are adapted so that, in a second direction of movement of said transverse cutting assembly relative to the carriage, opposite to the first direction of movement, the second blade is in a lowered position in which the second blade is driven to cut the sheet transversely over its entire width and the first blade of said transverse cutting assembly is in a raised position at a distance from the sheet so as not to cut the sheet.
[0024] According to certain advantageous embodiments of the invention, the orientation means for said transverse cutting assembly are adapted to allow: - a lowering of said first blade and holding said first blade in the lowered position in the first direction of movement of said transverse cutting assembly along said transverse cutting direction, and a raising of said second blade to the raised position in this first direction of movement, and - a lowering of said second blade and a holding of said second blade in the lowered position in the second direction of movement of said transverse cutting assembly according to said transverse cutting direction and a raising of said first blade in the raised position in this second direction of movement.
[0025] According to certain embodiments, the device according to the invention comprises at least one electronic board configured to control: - the means for driving the carriage in said conveying direction so as to drive said transverse cutting assembly from upstream to downstream with a speed equal to the conveying speed of the sheet in said conveying direction when the means for driving said transverse cutting assembly drive said transverse cutting assembly according one of the first and second directions of movement of said cross-section assembly, and / or - the means for driving the carriage in said conveying direction so as to drive said transverse cutting assembly from downstream to upstream at a speed greater than the conveying speed of the sheet in said conveying direction, when the means for driving said transverse cutting assembly do not drive said transverse cutting assembly in the first and second directions of movement of said transverse cutting assembly, and / or - the means for driving said transverse cutting assembly in motion across the entire width of the sheet along said transverse cutting direction in each of the first and second directions of movement of said transverse cutting assembly, so as to drive said transverse cutting assembly with a speed adapted to cut the sheet orthogonally to the largest dimension of the sheet in the first and second directions of movement of said transverse cutting assembly, - the means of orienting said transverse cutting assembly in the first and second directions of movement of said transverse cutting assembly.
[0026] According to these embodiments, the electronic card of the device according to the invention allows an adjustment of at least one of the largest dimensions (excluding the thickness) of the panels of said solid material cut from the sheet.
[0027] According to certain embodiments, said transverse cutting assembly comprises two discoidal blades, each of the two discoidal blades being provided with its own motor device for driving the blade in rotation.
[0028] According to certain embodiments, said transverse cutting assembly is configured to have a tilt angle α of non-zero value and less than or equal to 180°. The value of the tilt angle α is adapted with respect to a smaller dimension - in particular a thickness - of the tablecloth to be cut.
[0029] According to certain embodiments, the cutting device according to the invention comprises a tilting drive device for said transverse cutting assembly about a tilting axis parallel to said conveying direction. According to certain embodiments, the tilting drive device is adapted to drive said transverse cutting assembly in rotation about the tilting axis and with a non-zero angle of rotation less than or equal to 180°, in particular on the order of 90°, in either of the two directions of clockwise and counterclockwise rotation. According to these embodiments, the tilting drive device allows a alternate orientation of each of the first and second blades in a cutting orientation.
[0030] According to certain embodiments, the first and second blades of said transverse cutting assembly have opposite directions of rotation. According to these embodiments, the first blade is arranged to cut the sheet in one of the first and second directions of movement of said transverse cutting assembly along said transverse cutting direction, and the second blade is arranged to cut the sheet in the other of the first and second directions of movement of said transverse cutting assembly along said transverse cutting direction.
[0031] According to certain advantageous embodiments, the drive motor for the first blade and the drive motor for the second blade respectively drive the first and second blades in rotation without interruption of the drive and rotation during the feeding of the sheet. In fact, due to the choice of two blades with opposite directions of rotation, the start-up and stop phases of the drive motors are unnecessary, and the lifespan of the motors is improved. Furthermore, the cutting speed is increased.
[0032] According to these advantageous embodiments, the drive motor for the first blade and the drive motor for the second blade respectively drive the first and second blades in rotation without reversing the direction of rotation of either blade during the feeding of the sheet. In fact, choosing two blades with opposite directions of rotation completely eliminates the need for reversing the direction of rotation of the first and second blades during the feeding of the sheet. These reversing phases are unnecessary, and the lifespan of the motors is improved. Furthermore, the cutting speed is increased.
[0033] According to certain embodiments, the cutting device according to the invention comprises a single carriage supporting a single assembly, called the transverse cutting assembly, of at least two -in particular two- discoidal blades each extending in a plane parallel to a direction, called the transverse cutting direction, orthogonal to said conveying direction.
[0034] However, nothing prevents the cutting device according to the invention from comprising a plurality of carriages—in particular two or more carriages—each carriage supporting a single assembly, referred to as the transverse cutting assembly, of at least two—in particular two—discoidal blades, each extending in a plane parallel to a direction, referred to as the transverse cutting direction, orthogonal to said conveying direction. In these other embodiments, the number of cuts and the cutting rate can be increased.
[0035] According to certain embodiments, the cutting device according to the invention comprises at least a second set of blades, referred to as the longitudinal cutting set, arranged upstream of said transverse cutting set, and adapted to cut the sheet of solid material along a cutting direction parallel to the direction of movement of the sheet.
[0036] Nothing prevents, however, the provision that said longitudinal cutting assembly be disposed downstream of said transverse cutting assembly, and adapted to cut sections formed in the sheet of solid material by said transverse cutting assembly, according to a cutting direction parallel to the direction of movement of the sheet.
[0037] According to some of these embodiments, at least one—in particular each—of the blades of said longitudinal cutting assembly is retractable. According to some of these embodiments, at least one—in particular each—of the blades of said longitudinal cutting assembly is adapted to be repositionable transversely, along said transverse cutting direction. According to these embodiments, the cutting device according to the invention makes it possible to control at least one of the largest dimensions (other than the thickness) of the panels of said solid material cut from the sheet.
[0038] According to certain embodiments, the cutting device according to the invention is adapted to allow the sheet to be cut by said transverse cutting assembly so as to form at least one panel of said solid material having a longer dimension—a length—parallel to said conveying direction. According to certain other embodiments, the cutting device according to the invention is adapted to allow the sheet to be cut by said transverse cutting assembly so as to form at least one panel of said solid material having a longer dimension—a length—orthogonal to said conveying direction.
[0039] According to certain embodiments, said transverse cutting assembly is mounted on the carriage and movable along said transverse cutting direction over a distance adapted to the width of the sheet. According to certain embodiments, said transverse cutting assembly is mounted on the carriage and movable along said transverse cutting direction over a distance between approximately 1.0 m and approximately 6.0 m, in particular between approximately 1.0 m and approximately 5.0 m, preferably between approximately 2.0 m and approximately 4.0 m, more preferably between approximately 2.4 m and 3.6 m.
[0040] According to certain embodiments, the conveyor is configured to be able to carry the sheet of solid material in motion along said conveying direction with a speed between the order of 1 m / min and the order of 50 m / min, for example the order of 25 m / min.
[0041] According to certain embodiments, each of the first and second blades of said transverse cutting assembly has a diameter adapted according to the thickness of the sheet. According to certain embodiments, each of the first and second blades of said transverse cutting assembly has a diameter between approximately 300 mm and approximately 1300 mm, for example approximately 900 mm.
[0042] The invention also extends to a method for cutting a sheet of solid material conveyed in movement from upstream to downstream along a direction, called the conveying direction, parallel to a larger dimension of the sheet, a method in which:
[0043] an assembly, called a transverse cutting assembly, of at least two discoidal blades each extending in a plane parallel to a direction, called the transverse cutting direction, orthogonal to said conveying direction is driven in simultaneous movements; - transversely along a direction, called the cutting direction, orthogonal to said conveying direction, and - from upstream to downstream along said conveying direction with a speed equal to the speed of movement of the sheet along said conveying direction, a process in which, during a first cutting step, said transverse cutting assembly is driven in a first direction of movement of said transverse cutting assembly along said cutting direction, a first blade of said transverse cutting assembly is placed in a lowered position in which the first blade is driven to cut the sheet transversely over its entire width, a second blade of said transverse cutting assembly is placed in a raised position at a distance from the sheet and does not cut the sheet, whereby the sheet is cut transversely over its entire width, orthogonally to said conveying direction and according to a straight cut.
[0044] In certain embodiments, the method according to the invention includes a second cutting step subsequent to the first step, during which said transverse cutting assembly is driven in a second direction of movement, opposite to the first direction of movement, along said cutting direction, the second blade is placed in a lowered position in which the second blade is driven to cut the sheet transversely over its entire width and the first blade of said transverse cutting assembly is placed in a raised position at a distance from the sheet and does not cut the sheet.
[0045] In certain embodiments at least one of the first and second cutting steps is followed by a step of recalling said transverse cutting assembly upstream along said conveying direction at a higher speed (in value absolute) at the speed of movement of the sheet along said conveying direction, said recall step comprising an orientation of at least two discoidal blades of said transverse cutting assembly in one of the following two orientation states of said transverse cutting assembly: - a first orientation state of said transverse cutting assembly in which the first blade of said transverse cutting assembly is placed in a lowered position in which the first blade is adapted to be able to be driven in rotation so as to cut the sheet transversely over its entire width in a first direction of movement and the second blade of said transverse cutting assembly is placed in a raised position at a distance from the sheet, and - a second orientation state of said transverse cutting assembly in which the second blade of said transverse cutting assembly is placed in a lowered position in which the second blade is adapted to be able to be driven in rotation so as to cut the sheet transversely over its entire width in a second direction of movement opposite to the first direction of movement and the first blade of said transverse cutting assembly is placed in a raised position at a distance from the sheet.
[0046] According to some embodiments, the first blade and the second blade of said transverse cutting assembly have opposite directions of rotation.
[0047] According to some embodiments, the solid material is a construction material, in particular an insulating material, preferably an insulating material chosen from the group consisting of biomaterials such as hemp wool and / or flax fiber wool and / or cotton fiber wool, mineral wools such as glass wool or rock wool, ceramic wools, polymer materials such as polyurethanes and papers. Brief description of the figures
[0048] The following description, with reference to the accompanying drawings, given by way of non-limiting examples, will clearly explain what the invention consists of and how it can be implemented. In the accompanying figures:
[0049] [Fig-1] The [Fig. 1] is a general illustrative diagram outside the invention of cutting a sheet of a non-powdery solid material;
[0050] [Fig.2] Fig.2 is a flat view of a cutting device according to the invention in a first configuration of cutting a sheet of a non-powdery solid material, the cutting device being seen in the conveying axis, the sheet being conveyed from back to front in Fig.2;
[0051] [Fig.3] The [Fig.3] is a flat view of a cutting device according to the invention in a second configuration of cutting a sheet of a non-powdery solid material, the cutting device being seen in the conveying axis, the sheet being conveyed from back to front in [Fig.3];
[0052] [Fig.4] The [Fig.4] is a perspective view of a cutting device according to the invention in a first configuration of cutting a sheet of a non-powdery solid material illustrating a first step of an embodiment of a method of cutting a sheet of a non-powdery solid material according to the invention;
[0053] [Fig.5] The [Fig.5] is a perspective view of a cutting device according to the invention in a second configuration of cutting a sheet of a non-powdery solid material illustrating a subsequent second step of the first step of the embodiment of the method of cutting a sheet of a non-powdery solid material according to the invention described in [Fig.4];
[0054] [Fig.6] The [Fig.6] is a perspective view of a cutting device according to the invention in a third configuration of cutting a sheet of a non-powdery solid material illustrating a subsequent third step of the second step of the embodiment of the method of cutting a sheet of a non-powdery solid material according to the invention described in [Fig.5];
[0055] [Fig.7] The [Fig.7] is a perspective view of a cutting device according to the invention in a fourth configuration of cutting a sheet of a non-powdery solid material illustrating a subsequent fourth step of the third step of the embodiment of the method of cutting a sheet of a non-powdery solid material according to the invention described in [Fig.6];
[0056] [Fig.8] Fig.8 is a perspective view of a cutting device according to the invention in a first / fifth cutting configuration of a sheet of a non-powdery solid material illustrating a first / fifth subsequent step of the fourth step of the embodiment of the method for cutting a sheet of a non-powdery solid material according to the invention described in Fig.7 and Fig.4, and
[0057] [Fig.9] The [Fig.9] is an illustrative diagram of the top view of the movement of said transverse cutting assembly of a cutting device according to the invention during the implementation of a cutting process of a sheet of a non-powdery solid material according to the invention. Description of method(s) of implementation
[0058] In the figures, and unless otherwise specified, identical elements shall bear the same reference symbols.
[0059] Figure 1, representative of the prior art, has been described in the introductory section. of this text. A sheet 21 of a solid material is moved by a conveyor (not shown) in a direction, called the conveying direction 5, parallel to a larger dimension of the sheet 21 and oriented from upstream 3 to downstream 4 as represented by arrow 5. In particular, the upstream part 3 of the prior art cutting device 23 corresponds to a site 3 for the production of the solid material and the formation of the sheet 21 and the downstream part 4 corresponds to a site 4 for the conditioning, storage and distribution of the panels 22 of said solid material cut from the sheet 21. The panels 22 cut from the sheet 21 are panels in the overall shape of rectangular parallelepipeds.
[0060] The cutting device 1 according to the invention, shown in [Fig. 2], is arranged transversely straddling a conveyor 2. Neither the sheet of non-powdery solid material nor the panels cut from the sheet are shown. The cutting device 1 comprises a support assembly 28 adapted to hold a carriage 7 (not visible in Figures 2 and 3) in a substantially horizontal position, transversely overhanging the conveyor 2 and at a distance from it. The cutting device 1 comprises an assembly, referred to as the transverse cutting assembly 6, of two coplanar discoidal blades 10, 11, each extending in the same plane orthogonal to the conveyor direction 5. The two discoidal blades 10, 11 are partially protected by a housing. In Figures 2 and 3, the conveyor direction 5 is orthogonal to the plane of the figures.Each of the blades 10, 11 is equipped with a drive device 13, 14 that rotates both blade 10 and blade 11 about their own axis of rotation parallel to the conveying direction. The direction of rotation of blade 10 is counterclockwise, represented by a corresponding arrow 34. The direction of rotation of blade 11 is clockwise, represented by a corresponding arrow 35. The blades 10, 11 have opposite directions of rotation for the same viewing angle. The first blade 10 has a direction of rotation chosen to exert a downward force and keep the sheet of non-powdery solid material pressed against and in contact with the upper face of the conveyor 2.The transverse cutting assembly 6 includes means 25 for orienting said transverse cutting assembly 6, comprising a motor device 29 for orienting said transverse cutting assembly 6 between two alternative positions of said transverse cutting assembly 6. In a first alternative position of said transverse cutting assembly 6, represented in [Fig. 2], the first blade 10 is placed and held in a lowered position, the second blade 11 being held in a raised position at a distance from the tablecloth. From this lowered position, the first blade 10 can be driven into rotation by the blade 10 drive motor device 13, rotating it about itself in the counterclockwise direction 34. The die. The placement of said transverse cutting assembly 6 in a first direction 9 of movement of said transverse cutting assembly 6, combined with the rotation of the first blade 10, allows the sheet to be cut transversely in a first transverse cutting direction 9. A second alternative position of said transverse cutting assembly 6 is shown in [Fig. 3]. This second alternative position of said transverse cutting assembly 6 is derived from the first alternative position of [Fig. 2] by tilting the first and second blades clockwise by an angle of 90° around the axis of rotation of the orientation motor device 29.
[0061] In a second alternative position of said transverse cutting assembly 6 shown in [Fig. 3], the second blade 11 is placed and held in a lowered position, the first blade 10 being held in a raised position at a distance from the web. In [Fig. 3], the second blade 11 has a direction of rotation chosen to exert a downward oriented force and keep the web of non-powdery solid material pressed against and in contact with the upper face of the conveyor 2. From this lowered position, the second blade 11 can be driven into rotation by the second blade 11 drive motor device 14, rotating it about its own axis in the clockwise direction.The movement of said transverse cutting assembly 6 along a second direction 12 of movement of said transverse cutting assembly 6 combined with the rotation of the second blade 11 allows the sheet to be cut transversely in a second transverse cutting direction 12. A return to the first alternative position of said transverse cutting assembly 6 as shown in [Fig.2] is obtained by tilting the first and second blades 10, 11 counterclockwise by an angle of 90° about the axis of rotation of the orientation motor device 29.
[0062] The perspective views of a cutting device 1 according to the invention shown in [Fig. 4], 5, 6, 7, and 8 correspond to successive states of the cutting device 1, transiently occupied by the cutting device 1 during the implementation of a cutting process for a sheet of a non-powdery solid material according to the invention. In Figures 4, 5, 6, 7, and 8, the sheet of non-powdery solid material is not shown for the sake of simplifying the views. Furthermore, in Figures 4, 5, 6, 7, and 8, the direction and orientation of the sheet's conveying on the conveyor 2 is indicated by a unidirectional arrow 5. The perspective views in Figures 4 and 8 correspond to the flat view of [Fig. 2]. The perspective view in [Fig. 6] corresponds to the flat view of [Fig. 3].
[0063] In a first state of the cutting device 1 shown in [Fig. 4], said transverse cutting assembly 6 is positioned to the left of the cutting device 1 with respect to said conveying direction 5 and in an upstream position with respect to the device 1 of the cutting unit and to the said conveying direction 5. In [Fig. 4], the said transverse cutting unit 6 is shown on the right of the drawing. In this first state, the first blade 10 is in the lowered position and adapted to be able to cut the sheet. The cutting device 1 includes a carriage 7 adapted to allow movement of the said transverse cutting unit 6 in a direction, called the transverse cutting direction 8, orthogonal to the said conveying direction 5. The carriage 7 includes a straight guide rail 36 of the said transverse cutting unit 6 arranged substantially horizontally and orthogonally to the said conveying direction 5. The carriage 7 includes means 24 for driving the said transverse cutting unit 6 on the straight transverse guide rail 36. The means 24 for driving the said transverse cutting unit 6 on the straight guide rail 36 can be of any type.The drive means 24 for the transverse cutting assembly 6 on the straight guide rail 36 are adapted to allow straight-line drive and guidance of the transverse cutting assembly 6 along the transverse cutting direction 8 in either of the two opposite directions (forward and reverse) of transverse movement of the cutting assembly 6. The carriage 7 includes drive means 20 for the carriage 7, the straight rail 36, and the transverse cutting assembly 6 along the conveying direction 5. The drive means 20 for the carriage 7, the straight rail 36, and the transverse cutting assembly 6 along the conveying direction 5 may be of any type.The means 20 for driving the carriage 7, the straight rail 36, and the transverse cutting assembly 6 along the conveying direction 5 are adapted to maintain the straight rail 36 parallel to the transverse cutting direction 8 during the movement of the carriage 7 along the transverse cutting direction 8. The means 20 for driving the carriage 7, the straight rail 36, and the transverse cutting assembly 6 along the conveying direction 5 comprise two lateral guide rails 37 and two synchronized motor elements 38, each located at one end of the straight guide rail 36. The two synchronized motor elements 38 each cooperate with one of the two lateral guide rails 37 and maintain the straight rail 36 parallel to the transverse cutting direction 8 during the movement of the carriage 7 along the transverse cutting direction 8.Furthermore, the two synchronized motor components 38 are controlled to impart to the carriage 7, the straight rail 36, the transverse cutting assembly 6, and each of the first and second blades 10, 11 a travel speed along the conveying direction 5 equal to the travel speed of the web along the conveying direction 5. During a first cutting stage 30 (schematically shown in [Fig. 9]), the transverse cutting assembly 6 is driven synchronously in travel along the said direction 5. The transverse cutting direction 8 is achieved by means 24 driving motors of said transverse cutting assembly 6 on the straight guide rail 36 and in movement along said conveying direction 5 due to the movement of the carriage 7 driven in movement along said conveying direction 5 by the synchronized motor components 38. In combination with the activation of the motor device 13 driving the first blade 10 in rotation about its own axis, the movement of said transverse cutting assembly 6 results in a transverse cut of the layer of non-powdery solid material. The position of said transverse cutting assembly 6 at the end of the first cutting step 30 is shown in [Fig. 5].
[0064] In [Fig. 5], the transverse cutting assembly 6 is positioned to the right of the cutting device 1 relative to the conveying direction 5 and in a downstream position relative to the cutting device 1 and the conveying direction 5. At the end of the first cutting step 30, the first blade 10 is in the lowered cutting position and the second blade 11 is in the raised position. During a first return step 39, the carriage 7, the transverse cutting assembly 6, and the first and second blades 10, 11 are brought back from a downstream position marking the end of the first cutting step 30 to an upstream position relative to the conveying direction 5, marking the start of a second cutting step 31. During this first step 39 of recall, the first and second blades 10,11 are driven to tilt in the clockwise direction and by an angle of 90° around the axis of rotation of the orientation motor device 29.The state of the cutting device 1 during the initiation of the second cutting step 31 is represented in [Fig.6].
[0065] In [Fig. 6], the transverse cutting assembly 6 is positioned to the right of the cutting device 1 relative to the conveying direction 5 and upstream of the cutting device 1 and the conveying direction 5. At the start of the second cutting step 31, the first blade 10 is in the raised position and the second blade 11 is in the lowered cutting position. During the second cutting step 31 (shown schematically in [Fig. 9]), the second blade 11 is driven in rotation by the second blade 11 drive motor 14. During the second cutting step 31, the transverse cutting assembly 6 is driven synchronously in movement along the transverse cutting direction 8 by the drive motors 24 of the transverse cutting assembly 6 on the straight guide rail 36.During the second cutting step 31, the transverse cutting assembly 6 is driven synchronously in movement along the conveying direction 5 due to the movement of the carriage 7, which is driven in the same conveying direction 5 by the synchronized motor components 38. In combination with the activation of the motor device 14 driving the second blade 11 in rotation about its own axis, the result is... placement of said transverse cutting assembly 6 a transverse cut of the sheet of solid non-powdery material in the second direction 12 of movement of said transverse cutting assembly 6. The position of said transverse cutting assembly 6 at the end of the second cutting step 31 is shown in [Fig.7].
[0066] In [Fig. 7], the transverse cutting assembly 6 is positioned to the right of the cutting device 1 relative to the conveying direction 5 and in a downstream position relative to the cutting device 1 and the conveying direction 5. At the end of the second cutting step 31, the first blade 10 is in the raised position and the second blade 11 is in the lowered cutting position. During a second return step 40, the carriage 7, the transverse cutting assembly 6, and the first and second blades 10, 11 are brought back from a downstream position marking the end of the second cutting step 31 to an upstream position relative to the conveying direction 5, marking the initiation of a subsequent cutting step corresponding to the first cutting step 30 described above.During this second step 40 of recall, the first and second blades 10,11 are driven to tilt in the counterclockwise direction and by an angle of 90° about the axis of rotation of the orientation motor device 29. The state of the cutting device 1 at the initiation of a subsequent cutting step is shown in [Fig.8].
[0067] Figure 9 is a schematic representation of a method for cutting a sheet of a non-powdery solid material according to the invention, schematically illustrating the movement of said transverse cutting assembly 6 relative to the cutting device 1 according to the invention. Starting from an initial position of said transverse cutting assembly 6 located upstream and to the left of said conveying direction 5 (top right in Figure 9), said transverse cutting assembly 6 is driven in a first cutting step 30 in synchronous movements along the first direction 9 of movement of said transverse cutting assembly 6 and from upstream to downstream. During a first return step 39, said transverse cutting assembly 6 is brought back from downstream to upstream, without performing any cutting during this step 39.Then, during a second cutting step 31, said transverse cutting assembly 6 is moved synchronously along the second direction 12 (return) of movement of said transverse cutting assembly 6 and from upstream to downstream. During a second recall step 40, said transverse cutting assembly 6 is brought back from downstream to upstream, without performing a cut during this step 40, into a position suitable for initiating a subsequent cutting step.
[0068] The movement of said transverse cutting assembly 6 is optimized in both directions 9,12 of transverse movements, as well as the alternating tilting of the two discoidal blades 10,11 allowing a transverse cutting of the sheet which is efficient, fast, and does not require reversing the direction of rotation of a blade. The The cutting process and device according to the invention make it possible to increase the production rate of solid material panels, in particular panels for construction.
Claims
Demands
1. A cutting device (1) for a sheet (21) of a non-powdery solid material, conveyed by a conveyor (2) in a direction, referred to as the conveying direction (5), parallel to a larger dimension of the sheet (21), the cutting device (1) comprising: - an assembly, called the transverse cutting assembly (6), of at least two discoidal blades (10,11) each extending in a plane parallel to a direction, called the transverse cutting direction (8), orthogonal to said conveying direction, - at least one trolley (7) supporting said transverse cutting assembly (6), - means (20) for driving the trolley (7) along said direction (5) of conveying at a drive speed substantially equal to the conveying speed of the web on the conveyor (2) along said direction (5) of conveying, characterized in that; said at least one trolley (7) includes means (24) for driving said cross-cutting assembly (6) in movement over the entire width of the sheet in said cross-cutting direction (8), and in that; said cross-cutting assembly (6) includes means (25) for orienting said cross-cutting assembly (6) adapted to, in a first direction (9) of movement of said cross-cutting assembly (6) along said direction (8) of cross-cutting, maintain a first blade (10) of said cross-cutting assembly (6) in a lowered position in which the first blade (10) is driven in rotation so as to cut the sheet (21) transversely over its entire width in the first direction (9) of movement and maintain a second blade (11) of said cross-cutting assembly in a raised position at a distance from the sheet so as not to cut the sheet (21).
2. Device (1) according to claim 1, characterized in that the orientation means (25) of said transverse cutting assembly (6) are adapted for, in a second direction (12) of movement of said
3. assembly (6) of transverse cutting relative to the carriage (7), opposite to the first direction (9) of movement, the second blade (11) is in a lowered position in which the second blade (11) is driven so as to cut the sheet (2) transversely over its entire width according to the second direction (12) of movement and the first blade (10) of said assembly (6) of transverse cutting is in a raised position at a distance from the sheet so as not to cut the sheet (2). Device according to claim 1 or 2, characterized in that the device (1) comprises an electronic card (26) configured to control: - the means (20) for driving the carriage (7) in said direction (5) of conveying so as to drive said transverse cutting assembly (6) from upstream to downstream with a speed equal to the conveying speed of the sheet (21) in said direction (5) of conveying when the means (24) for driving said transverse cutting assembly (6) drive said transverse cutting assembly (6) in one of the first and second directions (9, 12) of movement of said transverse cutting assembly (6), and / or - the means (20) for driving the carriage (7) in said direction (5) of conveying so as to drive said transverse cutting assembly (6) from downstream to upstream at a speed greater than the conveying speed of the sheet (21) in said direction (5) of conveying, when the means (24) for driving said transverse cutting assembly (6) do not drive said transverse cutting assembly (6), and / or - the means (24) for driving said transverse cutting assembly (6) in movement across the entire width of the sheet along said transverse cutting direction (8) in either of the first and second directions of movement of said transverse cutting assembly (6) so as to drive said transverse cutting assembly (6) with a speed adapted to cut the sheet orthogonally to the largest dimension of the sheet (21) in each of the first and second directions of movement of said transverse cutting assembly (6), - the means (25) for orienting said transverse cutting assembly (6) in each of the first and second directions of movement of said transverse cutting assembly (6).
4. Device according to any one of claims 1 to 3, characterized in that said transverse cutting assembly (6) comprises two discoidal blades (10,11), each of the two discoidal blades (10,11) being provided with its own motor device (13,14) for driving the blade (10,11) in rotation.
5. Device according to any one of claims 1 to 4, characterized in that said transverse cutting assembly (6) is shaped to have a tilt angle a, of non-zero value and less than or equal to 180° and adapted with respect to a smaller dimension of the tablecloth to be cut.
6. Device according to any one of claims 1 to 5, characterized in that it comprises a motor device (25) for tilting said transverse cutting assembly (6) along a tilting axis (16) parallel to said conveying direction (5).
7. Device according to any one of claims 1 to 6, characterized in that the first blade (10) and the second blade (11) of said transverse cutting assembly (6) have opposite directions of rotation.
8. Device according to any one of claims 1 to 7, characterized in that it comprises at least a second set of blades, referred to as longitudinal cutting set (19), adapted to cut the sheet of solid material along a cutting direction parallel to the direction (5) of movement of the sheet.
9. Device according to claim 8, characterized in that at least one of the blades of said longitudinal cutting assembly (19) is retractable and / or repositionable in said transverse cutting direction (8).
10. Device according to any one of claims 1 to 9, characterized in that said transverse cutting assembly (6) is movably mounted on the carriage (7) along said cutting direction (8) over a distance between approximately 1.0 m and approximately 6.0 m.
11. Device according to any one of claims 1 to 10, characterized in that the conveyor (2) is configured to be able to carry the sheet (21) of solid material moving along said conveying direction (5) at a speed between approximately 1 m / min and approximately 50 m / min.
12. Device according to any one of claims 1 to 11, characterized in that each of the first blade (10) and second blade (11) of said transverse cutting assembly (6) has a diameter between approximately 300 mm and approximately 1300 mm.
13. A method for cutting a sheet (21) of a solid material conveyed in motion along a direction, referred to as the conveying direction (5), parallel to a larger dimension of the sheet, wherein: an assembly, referred to as the transverse cutting assembly (6), of at least two discoidal blades (10, 11), each extending in a plane parallel to a direction, referred to as the transverse cutting direction (8), orthogonal to said conveying direction (5), is conveyed; - transversely along a direction, referred to as the cutting direction (8), orthogonal to said conveying direction (5), and - along said conveying direction (5) with a speed equal to the speed of movement of the sheet (21) along said conveying direction (5), wherein, during a first cutting step (30),said transverse cutting assembly (6) is driven in a first direction (9) of movement of said transverse cutting assembly (6) along said cutting direction (8), a first blade (10) of said transverse cutting assembly (6) is placed in a lowered position in which the first blade (10) is driven to cut the sheet (21) transversely over its entire width, a second blade (11) of said transverse cutting assembly (6) is placed in a raised position at a distance from the sheet (21) and does not cut the sheet (21), thereby cutting the sheet (21) transversely over its entire width, orthogonally to said conveying direction (5) and along a straight cut.
14. A method according to claim 13, characterized in that, during a second cutting step following the first cutting step (30), said transverse cutting assembly (6) is driven in a second direction (12) of movement, opposite to the first direction (9) of movement, along said cutting direction (8), the second blade (11) is placed in a lowered position in which the second blade (11) is driven to cut the sheet transversely over its entire length width and the first blade (10) of said cross-cutting assembly (6) is placed in a raised position away from the tablecloth and does not cut the tablecloth.
15. A method according to any one of claims 13 or 14, characterized in that the first blade (10) and the second blade (11) of said transverse cutting assembly (6) have opposite directions of rotation.
16. A method according to any one of claims 13 to 15, characterized in that the solid material is a construction material, in particular an insulating material selected from the group consisting of biomaterials, mineral wools, ceramic wools, polymer materials and papers.