EP4096885A1 - Modular support element for aspirated cutting in a machine for automatic cutting of sheet material - Google Patents

Modular support element for aspirated cutting in a machine for automatic cutting of sheet material

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Publication number
EP4096885A1
EP4096885A1 EP21716799.8A EP21716799A EP4096885A1 EP 4096885 A1 EP4096885 A1 EP 4096885A1 EP 21716799 A EP21716799 A EP 21716799A EP 4096885 A1 EP4096885 A1 EP 4096885A1
Authority
EP
European Patent Office
Prior art keywords
bristles
modular
modular element
head
sole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21716799.8A
Other languages
German (de)
French (fr)
Other versions
EP4096885B1 (en
Inventor
Didier Chabirand
Régis LALLEMENT
Gilles REGNIER
Ghailen BEN GHORBAL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
CNAM Conservatoire National des Arts et Metiers
Lectra SA
Ecole National Superieure dArts et Metiers ENSAM
Amvalor SAS
Original Assignee
Centre National de la Recherche Scientifique CNRS
CNAM Conservatoire National des Arts et Metiers
Lectra SA
Ecole National Superieure dArts et Metiers ENSAM
Amvalor SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS, CNAM Conservatoire National des Arts et Metiers, Lectra SA, Ecole National Superieure dArts et Metiers ENSAM, Amvalor SAS filed Critical Centre National de la Recherche Scientifique CNRS
Priority to SI202130131T priority Critical patent/SI4096885T1/en
Priority to HRP20240479TT priority patent/HRP20240479T1/en
Priority to RS20240406A priority patent/RS65434B1/en
Publication of EP4096885A1 publication Critical patent/EP4096885A1/en
Application granted granted Critical
Publication of EP4096885B1 publication Critical patent/EP4096885B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds

Definitions

  • the present invention relates to a suction cutting support for an automatic machine for cutting sheet materials, in particular textile materials, using a vibrating blade penetrating into the cutting support. It relates more precisely to a modular element intended to form such a cutting support.
  • One field of application of the invention is that of the automatic cutting of stacks or mattresses of sheets of material, in particular textile materials, using a vibrating blade penetrating into a suction cutting support.
  • a vibrating blade cutting machine comprises in particular a cutting conveyor which serves to drive the stack of sheets during the cutting operation.
  • This cutting conveyor is housed in a box inside which a strong depression is established in order to keep the sheets of material to be cut immobile during the cutting operation.
  • the cutting conveyor also serves as a penetrating cutting support for the vibrating blade. It is indeed well known to make the cutting support penetrable by the blade so that during the cutting operation the blade can not only completely pass through the material to be cut, but also extend downwards beyond. the support surface and in the bed of material providing such a surface.
  • the cutting support generally consists of an assembly of blocks driven by a belt. More precisely, each block comprises a plurality of bristles mounted on a sole in several parallel rows, each bristle having a head forming the support for the sheet material to be cut. Transverse channels are made through the sole to allow the passage of suction air. These blocks thus make it possible to support the material to be cut under suction while being able to be penetrated by the cutting blade.
  • the cutting support blocks are most often obtained by molding plastic material.
  • the molding makes it possible to obtain a paving stone in one piece with the sole and all of the bristles thereof.
  • the bristles which generally have a conical or cylindrical shape, have a diameter at the head that is smaller than the diameter at the bottom.
  • the tip of the cutting blades being bevelled, the interference between the blade and the bristles is favored by the taper of the bristles associated with their flexibility, which can result in partial or total cuts of the bristles.
  • the height position of this cutout is directly related to the taper of the bristles and the blade or the position of the blade relative to the generatrix of the bristles encountered by the blade.
  • the need to have bristles, the foot of which has a larger diameter than the head has the drawback of limiting the space on the sole for making the passage channels for the suction air, which reduces d 'as much the suction capacity of the cutting support.
  • the object of the invention is therefore to provide a cutting support which does not have the aforementioned drawbacks.
  • a modular suction cutting support element of an automatic blade cutting machine for sheet material comprising a plurality of bristles arranged along a single line, at least certain bristles each having a foot integral with a sole intended to be mounted on a support, a head opposite the foot on which a sheet material to be cut is intended to rest, and a rod connecting the head to the foot and the largest of which straight section is strictly included in the largest straight section of the head, the sole comprising, at each of its lateral faces, a plurality of transverse channels for the passage of the suction air communicating an upper face of the sole from which the bristles extend with an inner face opposite to the upper face.
  • straight section is meant here a section made perpendicular to the axis of the pile.
  • strictly included is meant here that all the points of the largest straight section of the shaft of each hair are included (or encompassed) in the largest straight section of the head of the hair but that at least a point on the greatest straight section of the head is not included in the greatest straight section of the shank.
  • the head and the shaft of the hair each have a circular cross section, this condition is equivalent to that the cross section of the head has a diameter strictly greater than that of the rod.
  • the invention is remarkable in that it makes it possible to produce the cutting supports by mounting a plurality of modular elements on at least one support.
  • each modular element comprises bristles arranged along the same and single line, it is possible to give at least some bristles a head having a straight section including a straight section of the rod, while retaining the ability to manufacture these modular elements by one-piece molding with their sole and bristles.
  • Such a geometric shape of the bristles has the advantage of limiting the interactions between the tip of the cutting blade and the bristles in tangency.
  • the support surface offered by these modular elements is better because the head of the bristles has a larger cross section than that of the rods.
  • the cross section of the stems and feet of the bristles it is easier to increase the diameter of the transverse channels for the passage of the suction air, and thus to improve the air porosity of the bristles. the sole in order to retain maximum suction and limit pressure drops.
  • Another advantage linked to the production of cutting supports by mounting a plurality of modular elements according to the invention lies in the possibility of being able to offer cutting supports differentiated by cutting blade, looms, etc.
  • the sole further comprises, at each of its lateral faces, at least one longitudinal channel extending between the ends. longitudinal sections of the sole and communicating with the transverse channels in order to distribute the suction air evenly in the transverse channels. This feature makes it possible to make the suction of the modular element more homogeneous over the entire surface of the sole.
  • the sole further comprises, at each of its side faces, at least one mechanical assembly member with another modular element.
  • each mechanical assembly member may include at least one lug projecting relative to a lateral face of the sole and intended to fit into a corresponding recess of an assembly member of a modular element. adjacent, and a recess set back relative to the lateral face of the sole and intended to receive by interlocking a corresponding lug of the assembly member of the adjacent modular element.
  • At least some bristles may include a head having a truncated cone shape and a shank having a cylindrical shape.
  • the head of these bristles may have the shape of a truncated cone having a circular cross section on the inner side which is greater than that on the outer side.
  • the head of these bristles may have the shape of an inverted truncated cone having a circular cross section on the outer side which is greater than that on the inner side.
  • bristles may have a shank and a head having a cross section of polygonal shape, for example a shank of straight section of hexagonal shape and a head of straight section of octagonal shape.
  • the sole may further comprise an attachment at each longitudinal end for assembling the modular element on a support, and two fingers projecting inwardly and acting as centralizers on the support.
  • the transverse channels may have a cross section of semi-circular shape so as to form transverse passages of cylindrical shape when another modular element is mounted against said element.
  • the bristles of the same modular element can be arranged in a straight line forming a single row of bristles. Alternatively, the bristles can be arranged in a broken line forming two parallel rows of bristles.
  • the modular element can include at least two bristles, the respective heads of which have different shapes.
  • the subject of the invention is also a suction cutting support for an automatic machine for cutting sheet materials comprising a plurality of modular elements as defined above and mounted on at least one support.
  • the modular elements can be mounted on the support so as to obtain an orderly alignment of the bristles.
  • modular elements can be mounted on the support so as to obtain staggered alignment of the bristles.
  • certain modular elements are mounted on the support so as to obtain an orderly alignment of the bristles and certain other modular elements are mounted on the same support so as to obtain a staggered alignment of the bristles.
  • the distance between two adjacent bristles is greater than the largest dimension of the cross section of the bristle shaft. This feature makes it possible to prevent a cut pile coming from the bottom of the paving stone from moving the surrounding hairs away.
  • FIG. 1 is a perspective view of a cutting support block according to one embodiment of the invention (so-called “ordered” configuration).
  • Figure 2 is a perspective view of a modular element for obtaining the cutting support of Figure 1.
  • Figure 3 is a front view of the modular element of Figure 2.
  • Figure 4 is a side view of the modular element of Figure 2.
  • FIG. 5 is a perspective view of a cutting support block according to another embodiment of the invention (so-called “staggered” configuration).
  • FIG. 6 Figure 6 is a partial top view of the cutting support pad of Figure 5.
  • Figure 7 is a perspective view of a modular element for obtaining the cutting support block of Figure 5.
  • FIG. 8 is a view of a modular element bristle head according to an alternative embodiment.
  • FIG. 9 is a perspective view of a modular element according to yet another variant embodiment of the invention.
  • FIG. 10A shows an alternative arrangement of the bristles of the same modular element according to the invention.
  • FIG. 10B shows another variant of the arrangement of the bristles of the same modular element according to the invention.
  • Figure 11 is a perspective view of a modular element according to the invention without a mechanical assembly member.
  • FIG. 12 is a partial view of a modular element according to yet another variant embodiment of the invention.
  • the conveyor belt of a vibrating blade cutting machine drives the material to be cut during the cutting operation.
  • the upper part of the conveyor serves as a cutting support and the lower part is generally housed in a box inside which a strong depression is established in order to keep the material to be cut immobile during the cutting operation.
  • the cutting support itself may typically consist of an assembly of a plurality of blocks mounted on a drive belt such as the cutting support block 2 shown in Figure 1.
  • This cutting support block 2 consists of assembling together a plurality of modular elements 4 (for example eleven in number in the embodiment shown in FIG. 1).
  • the modular elements are assembled together by interlocking their respective side faces as described below.
  • each modular element 4 according to the invention comprises a plurality of bristles 6 which are aligned in a same and single row of bristles.
  • These bristles 6 each have a foot 8 which is integral with a sole 10 common to all the bristles, a head 12 which is opposite the foot and which is intended to serve as a cutting support, and a rod 9 which connects the foot to head.
  • each bristle 6 has the particularity of having a head 12 of which the largest straight section (that is to say the largest section made perpendicular to the main axis of the bristle) encompasses the largest straight section of its rod 9.
  • the largest cross section of the head is strictly greater than the largest cross section of the rod 9 (ie it surrounds it by being larger).
  • the largest cross section of the head has a diameter D which is strictly greater than the largest diameter d of the straight section of the rod.
  • the head 12 of each bristle has the shape of an inverted truncated cone having a circular cross section of the outer side which is greater than that of the inner side (ie the large base B of the truncated cone is arranged towards the outside of the modular element and the small base b of the truncated cone is turned towards the inside).
  • the invention is not limited to these particular geometric shapes for the hair, its head and its foot.
  • the foot has the shape of a truncated cone or pyramid with a polygonal base and the head has a cross section other than circular (square, hexagonal, etc.).
  • the sole 10 of each of them may comprise, at each of its two lateral faces 10a, 10b, at least one mechanical assembly member 13 with another modular element.
  • each of the side faces 10a, 10b of the sole of a modular element can be provided with four mechanical assembly members spaced from each other, namely: an end assembly member 13a at each of its longitudinal ends 10c, 10d and two central assembly members 13b positioned between its longitudinal ends.
  • assembly members 13 of the two lateral faces of a modular element can be aligned one opposite the other.
  • the mechanical assembly members 13 can each include at least one lug 14 which projects relative to the lateral face of the sole and a recess 16 set back relative to the lateral face of the sole, the lug and the recess being for example positioned transversely one above the other.
  • the lugs 14 of the mechanical assembly members of one of the modular elements fit inside the recesses 16 of the mechanical assembly members of the other. modular element (and vice versa) with a hold that can be provided by glue or by clipping for example.
  • the assembly of several modular elements together makes it possible to ensure continuity of the upper face of the sole.
  • the modular elements could simply be positioned next to each other on a paving stone or directly on a support and held together by a suitable mechanism.
  • the two side faces 10a, 10b of the sole 10 of the modular element each comprise a plurality of transverse channels 18 which communicate the outer face of the sole (that is to say the face to from which the bristles extend) with its inner face (that is, the face opposite to the outer face).
  • transverse channels 18 which are advantageously regularly distributed over the entire length of the sole, make it possible to impart porosity to the sole by allowing the suction air to pass through the sole.
  • the transverse channels 18 may each have a cross section of semicircular shape so as to form transverse passages of cylindrical shape when two modular elements are mounted one against the other.
  • the sole 10 of the modular element further comprises, at each of its two lateral faces 10a, 10b, a longitudinal channel 20 which extends between its two longitudinal ends 10c, 10d and which communicates with the transverse channels 18 in order to distribute the suction air in a homogeneous manner therein.
  • the longitudinal channel 20 may have a cross section of semi-circular shape so as to form a longitudinal passage of cylindrical shape when two modular elements are mounted against each other.
  • the sole 10 of the modular element further comprises at least one fastener 22 in the form of a hook at each of its longitudinal ends 10c, 10d, and two fingers 24 projecting towards the inside of the sole.
  • the fasteners 22 in the form of hooks make it possible to mount the cutting support block formed by the assembly of several modular elements on a support (not shown) intended to be mounted directly on the drive belt of the cutting conveyor.
  • a support not shown
  • the fingers 24 they play the role of centralizers on the support.
  • the modular elements are assembled within the same block so as to obtain an orderly alignment of the bristles, that is to say that the bristles 6 within the same block 2 are aligned in the longitudinal and transverse directions.
  • FIGS. 5 to 7 At least some of the modular elements of the same block can be assembled so as to obtain a staggered alignment of the bristles.
  • the modular elements 4-1 to 4-4 are assembled so as to obtain an orderly alignment of the bristles, while the modular elements 4'-1 to 4'- 4 are assembled so as to obtain a staggered alignment of the bristles.
  • the modular elements 4'-1 to 4'- 4 are assembled so as to obtain a staggered alignment of the bristles.
  • other configurations are possible according to needs by mixing the two types of modular elements.
  • FIG. 7 shows in detail and in perspective a modular element 4 'making it possible to obtain a staggered assembly of the bristles within the same support block.
  • this modular element 4 ' is distinguished by the shape of the transverse channels 18' for the passage of the suction air between the inner face and the outer face of the sole 10.
  • transverse channels 18 'of the modular element 4' each have a cross section in the form of a double semicircle so as to form transverse passages 26 in the form of a bean when another element modular is assembled on said element (see figure 6).
  • a longitudinal channel 20 'extending between the longitudinal ends of the sole communicates with the transverse channels 18' in order to distribute the suction air uniformly in the latter.
  • FIG. 8 represents a modular element bristle head according to an alternative embodiment, this form of bristle being able to apply equally well to the modular elements of the embodiment of FIGS. 1 to 4 and to those of the embodiment of figures 5 to 7.
  • the head 12 'of the bristles 6' has the shape of a truncated cone having a circular cross section on the inner side which is greater than that on the outer side (ie the small base b_ 'of the truncated cone is arranged toward the outside of the modular element and the large base B_ 'of the truncated cone is turned inwards).
  • the head 12 ' also has a circular cross section, the largest cross section of which (that is to say at the level of the large base B_') has a diameter D_ 'which is strictly greater than the most large diameter d_ 'of the circular cross section of the hair shaft 9'.
  • each bristle 6, 6 ' can have a cylindrical shape between its head 12, 12' and its foot 8, 8 '.
  • any other shape can also be envisaged (for example with a square or polygonal cross section, etc.).
  • FIG. 9 shows yet another variant embodiment of a modular cutting support element 4 "in which the rod 9" of the bristles 6 "has a cross section of hexagonal shape between the head 12" and the foot 8 ". Furthermore, in this variant embodiment, the head 12 "has a cross section of octagonal shape.
  • Such a general shape of the bristles 6, 6 ', 6 "and the production of modular elements comprising single rows of bristles makes it possible to manufacture the latter by molding in a single piece.
  • such a configuration makes it possible to do without bristle shape constraints required for demolding.
  • all the bristles of the same modular element do not necessarily have a head, the cross section of which includes the largest straight section of the rod. It is in fact possible to envisage that only certain bristles of the same modular element have such a characteristic, the other bristles of the modular element having a head of cross section identical to that of their rod.
  • FIGS. 10A and 10B show two possible arrangements for the bristles 6, 6 ', 6 "of the same modular element 4, 4'.
  • the bristles of the same modular element are arranged along a straight line L1 forming a single row of bristles.
  • the respective longitudinal axes of the bristles are all aligned on the same straight line L1.
  • the bristles of the same modular element can be arranged along a broken line (or sawtooth) L2 so as to form two rows of bristles RI, R2 which are parallel .
  • the modular element can be manufactured by molding in a single piece.
  • the modular element 4 according to the invention may be devoid of any mechanical assembly member.
  • the modular elements of the same support are simply positioned against each other on the same support and held together by a suitable mechanism.
  • FIG. 12 partially illustrates yet another alternative embodiment of a modular cutting support element 4 '"in which the heads of the bristles have different shapes.
  • the modular element comprises an alternation of bristles 6a, the respective head 12a of which has the shape of a truncated cone, the large base of which is turned outwards and of bristles 6b of which the respective head 12b has the shape of a truncated cone, the large base of which is turned inward.
  • Such an “head-to-tail” alternation of the heads of the bristles has the advantage of increasing the apparent density of the bristles, which makes it possible to increase the retention of the fabric.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Details Of Cutting Devices (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

Modular support element for aspirated cutting in a machine for automatic cutting of sheet material The invention relates to a modular support element (4) for aspirated cutting in a machine for automatic cutting of sheet material by means of blades, comprising a plurality of bristles (6) arranged in the same single line, at least some of the bristles each having a base (8) rigidly connected to a bearing plate (10) intended to be mounted on a stand, a head (12) opposite the base on which a sheet material to be cut is intended to rest, and a rod (9) connecting the head to the base, the largest cross-section of which is strictly included in the largest cross-section of the head, the bearing plate comprising, on each of its side surfaces, a plurality of transverse channels (18) for the passage of aspirated air providing communication between an upper surface of the bearing plate from which the bristles extend and an inner surface opposite the upper surface.

Description

Description Description
Titre de l'invention : Elément modulaire de support de coupe à aspiration d'une machine de coupe automatique de matériaux en feuilles Title of the invention: Modular suction cutting support element of an automatic sheet material cutting machine
Domaine Technique Technical area
La présente invention est relative à un support de coupe à aspiration pour machine de coupe automatique de matériaux en feuilles, notamment de matériaux textiles, à l'aide d'une lame vibrante pénétrant dans le support de coupe. Elle concerne plus précisément un élément modulaire destiné à former un tel support de coupe. The present invention relates to a suction cutting support for an automatic machine for cutting sheet materials, in particular textile materials, using a vibrating blade penetrating into the cutting support. It relates more precisely to a modular element intended to form such a cutting support.
Technique antérieure Prior art
Un domaine d'application de l'invention est celui de la découpe automatique de piles ou de matelas de feuilles de matériaux, notamment de matériaux textiles, à l’aide d'une lame vibrante pénétrant dans un support de coupe à aspiration. One field of application of the invention is that of the automatic cutting of stacks or mattresses of sheets of material, in particular textile materials, using a vibrating blade penetrating into a suction cutting support.
Typiquement, une machine de coupe à lame vibrante comprend notamment un convoyeur de coupe qui sert à entraîner la pile de feuilles durant l'opération de coupe. Ce convoyeur de coupe est logé dans un caisson à l'intérieur duquel est établie une forte dépression afin de maintenir immobiles les feuilles de matériau à découper durant l'opération de coupe. Typically, a vibrating blade cutting machine comprises in particular a cutting conveyor which serves to drive the stack of sheets during the cutting operation. This cutting conveyor is housed in a box inside which a strong depression is established in order to keep the sheets of material to be cut immobile during the cutting operation.
Dans ce type de machine, le convoyeur de coupe sert également de support de coupe pénétrant pour la lame vibrante. Il est en effet bien connu de rendre le support de coupe pénétrable par la lame de sorte que durant l'opération de coupe, la lame puisse non seulement traverser complètement le matériau à couper, mais également s'étendre vers le bas au-delà de la surface de support et dans le lit de matériau fournissant une telle surface. In this type of machine, the cutting conveyor also serves as a penetrating cutting support for the vibrating blade. It is indeed well known to make the cutting support penetrable by the blade so that during the cutting operation the blade can not only completely pass through the material to be cut, but also extend downwards beyond. the support surface and in the bed of material providing such a surface.
Pour ce faire, le support de coupe est généralement constitué d'un assemblage de pavés entraînés par une courroie. Plus précisément, chaque pavé comprend une pluralité de poils montés sur une semelle en plusieurs rangées parallèles, chaque poil ayant une tête formant le support pour le matériau en feuilles à découper. Des canaux transversaux sont pratiqués au travers de la semelle pour permettre le passage de l'air d'aspiration. Ces pavés permettent ainsi de supporter le matériau à découper sous aspiration tout en pouvant être pénétrés par la lame de coupe. To do this, the cutting support generally consists of an assembly of blocks driven by a belt. More precisely, each block comprises a plurality of bristles mounted on a sole in several parallel rows, each bristle having a head forming the support for the sheet material to be cut. Transverse channels are made through the sole to allow the passage of suction air. These blocks thus make it possible to support the material to be cut under suction while being able to be penetrated by the cutting blade.
Les pavés de support de coupe sont le plus souvent obtenus par moulage de matière plastique. Le moulage permet d'obtenir un pavé en une seule pièce avec la semelle et l'ensemble des poils de celui-ci. Pour assurer le démoulage d'une telle pièce, il est nécessaire que les poils, qui ont généralement une forme conique ou cylindrique, présentent un diamètre en tête plus petit que le diamètre en pied. On pourra notamment se référer au document US 4,205,835 qui décrit un exemple de réalisation d'un tel pavé de support de coupe. The cutting support blocks are most often obtained by molding plastic material. The molding makes it possible to obtain a paving stone in one piece with the sole and all of the bristles thereof. To ensure the release of such a part, it is necessary that the bristles, which generally have a conical or cylindrical shape, have a diameter at the head that is smaller than the diameter at the bottom. Reference may in particular be made to document US Pat. No. 4,205,835 which describes an embodiment of such a cutting support block.
Or, la pointe des lames de coupe étant biseautée, l'interférence entre la lame et les poils est favorisée par la conicité des poils associée à leur flexibilité, ce qui peut entraîner des coupes partielles ou totales de poils. La position en hauteur de cette découpe est directement liée à la conicité des poils et de la lame ou de la position de la lame par rapport à la génératrice des poils rencontrés par la lame. However, the tip of the cutting blades being bevelled, the interference between the blade and the bristles is favored by the taper of the bristles associated with their flexibility, which can result in partial or total cuts of the bristles. The height position of this cutout is directly related to the taper of the bristles and the blade or the position of the blade relative to the generatrix of the bristles encountered by the blade.
Par ailleurs, la nécessité d'avoir des poils dont le pied présente un diamètre plus grand que la tête a pour inconvénient de limiter l'espace sur la semelle pour pratiquer les canaux de passage de l'air d'aspiration, ce qui réduit d'autant la capacité d'aspiration du support de coupe. Furthermore, the need to have bristles, the foot of which has a larger diameter than the head has the drawback of limiting the space on the sole for making the passage channels for the suction air, which reduces d 'as much the suction capacity of the cutting support.
Exposé de l'invention Disclosure of the invention
L'invention a donc pour but de proposer un support de coupe qui ne présente pas les inconvénients précités. The object of the invention is therefore to provide a cutting support which does not have the aforementioned drawbacks.
Conformément à l'invention, ce but est atteint grâce à un élément modulaire de support de coupe à aspiration d'une machine de coupe automatique par lame de matériaux en feuilles, comprenant une pluralité de poils arrangés selon une même et unique ligne, au moins certains poils ayant chacun un pied solidaire d'une semelle destinée à être montée sur un support, une tête opposée au pied sur laquelle est destinée à reposer un matériau en feuilles à découper, et une tige reliant la tête au pied et dont la plus grande section droite est strictement incluse dans la plus grande section droite de la tête, la semelle comprenant, au niveau de chacune de ses faces latérales, une pluralité de canaux transversaux pour le passage de l'air d'aspiration faisant communiquer une face supérieure de la semelle à partir de laquelle s'étendent les poils avec une face intérieure opposée à la face supérieure. According to the invention, this object is achieved by means of a modular suction cutting support element of an automatic blade cutting machine for sheet material, comprising a plurality of bristles arranged along a single line, at least certain bristles each having a foot integral with a sole intended to be mounted on a support, a head opposite the foot on which a sheet material to be cut is intended to rest, and a rod connecting the head to the foot and the largest of which straight section is strictly included in the largest straight section of the head, the sole comprising, at each of its lateral faces, a plurality of transverse channels for the passage of the suction air communicating an upper face of the sole from which the bristles extend with an inner face opposite to the upper face.
Par « section droite », on entend ici une section réalisée perpendiculairement à l'axe du poil. De plus, par « strictement incluse », on entend ici que tous les points de la plus grande section droite de la tige de chaque poil sont inclus (ou englobés) dans la plus grande section droite de la tête du poil mais qu'au moins un point de la plus grande section droite de la tête n'est pas inclus dans la plus grande section droite de la tige. Par exemple, lorsque la tête et la tige du poil ont chacun une section droite circulaire, cette condition équivaut à ce que la section droite de la tête présente un diamètre strictement supérieur à celle de la tige. By “straight section” is meant here a section made perpendicular to the axis of the pile. In addition, by "strictly included" is meant here that all the points of the largest straight section of the shaft of each hair are included (or encompassed) in the largest straight section of the head of the hair but that at least a point on the greatest straight section of the head is not included in the greatest straight section of the shank. For example, when the head and the shaft of the hair each have a circular cross section, this condition is equivalent to that the cross section of the head has a diameter strictly greater than that of the rod.
L'invention est remarquable en ce qu'elle permet de réaliser les supports de coupe par le montage d'une pluralité d'éléments modulaires sur au moins un support. Comme chaque élément modulaire comprend des poils arrangés selon une même et unique ligne, il est possible de donner à au moins certains poils une tête présentant une section droite englobant une section droite de la tige, tout en conservant la faculté de fabriquer ces éléments modulaires par moulage en une seule pièce avec leur semelle et leurs poils. Une telle forme géométrique des poils présente l'avantage de limiter les interactions entre la pointe de la lame de coupe et les poils en tangence. The invention is remarkable in that it makes it possible to produce the cutting supports by mounting a plurality of modular elements on at least one support. As each modular element comprises bristles arranged along the same and single line, it is possible to give at least some bristles a head having a straight section including a straight section of the rod, while retaining the ability to manufacture these modular elements by one-piece molding with their sole and bristles. Such a geometric shape of the bristles has the advantage of limiting the interactions between the tip of the cutting blade and the bristles in tangency.
De plus, la surface de support offerte par ces éléments modulaires est meilleure du fait que la tête des poils présente une section droite plus grande que celle des tiges. En outre, en diminuant la section droite des tiges et pieds des poils, il est plus aisé d'augmenter le diamètre des canaux transversaux pour le passage de l'air d'aspiration, et ainsi d'améliorer la porosité à l'air de la semelle afin de conserver un maximum d'aspiration et de limiter les pertes de charge. In addition, the support surface offered by these modular elements is better because the head of the bristles has a larger cross section than that of the rods. In addition, by reducing the cross section of the stems and feet of the bristles, it is easier to increase the diameter of the transverse channels for the passage of the suction air, and thus to improve the air porosity of the bristles. the sole in order to retain maximum suction and limit pressure drops.
Un autre avantage lié à la réalisation des supports de coupe par le montage d'une pluralité d'éléments modulaires selon l'invention réside dans la possibilité de pouvoir proposer des supports de coupe différenciés par lame de coupe, métiers, etc. Another advantage linked to the production of cutting supports by mounting a plurality of modular elements according to the invention lies in the possibility of being able to offer cutting supports differentiated by cutting blade, looms, etc.
De préférence, la semelle comprend en outre, au niveau de chacune de ses faces latérales, au moins un canal longitudinal s'étendant entre les extrémités longitudinales de la semelle et communiquant avec les canaux transversaux afin de répartir de façon homogène l'air d'aspiration dans les canaux transversaux. Cette caractéristique permet de rendre l'aspiration de l'élément modulaire plus homogène sur toute la surface de la semelle. Preferably, the sole further comprises, at each of its lateral faces, at least one longitudinal channel extending between the ends. longitudinal sections of the sole and communicating with the transverse channels in order to distribute the suction air evenly in the transverse channels. This feature makes it possible to make the suction of the modular element more homogeneous over the entire surface of the sole.
De préférence également, la semelle comprend en outre, au niveau de chacune de ses faces latérales, au moins un organe d'assemblage mécanique avec un autre élément modulaire. Also preferably, the sole further comprises, at each of its side faces, at least one mechanical assembly member with another modular element.
Dans ce cas, chaque organe d'assemblage mécanique peut comprendre au moins un ergot faisant saillie par rapport à une face latérale de la semelle et destiné à venir s'emboîter dans un évidement correspondant d'un organe d'assemblage d'un élément modulaire adjacent, et un évidement en retrait par rapport à la face latérale de la semelle et destiné à venir recevoir par emboîtement un ergot correspondant de l'organe d'assemblage de l'élément modulaire adjacent. In this case, each mechanical assembly member may include at least one lug projecting relative to a lateral face of the sole and intended to fit into a corresponding recess of an assembly member of a modular element. adjacent, and a recess set back relative to the lateral face of the sole and intended to receive by interlocking a corresponding lug of the assembly member of the adjacent modular element.
Au moins certains poils peuvent comprendre une tête ayant une forme de tronc de cône et une tige ayant une forme cylindrique. Dans ce cas, la tête de ces poils peut présenter une forme de tronc de cône ayant une section droite circulaire du côté intérieur qui est supérieure à celle du côté extérieur. Alternativement, la tête de ces poils peut présenter une forme de tronc de cône inversé ayant une section droite circulaire du côté extérieur qui est supérieure à celle du côté intérieur. At least some bristles may include a head having a truncated cone shape and a shank having a cylindrical shape. In this case, the head of these bristles may have the shape of a truncated cone having a circular cross section on the inner side which is greater than that on the outer side. Alternatively, the head of these bristles may have the shape of an inverted truncated cone having a circular cross section on the outer side which is greater than that on the inner side.
Alternativement, au moins certains poils peuvent présenter une tige et une tête ayant une section droite de forme polygonale, par exemple une tige de section droite de forme hexagonale et une tête de section droite de forme octogonale. Alternatively, at least some bristles may have a shank and a head having a cross section of polygonal shape, for example a shank of straight section of hexagonal shape and a head of straight section of octagonal shape.
La semelle peut comprendre en outre une attache à chaque extrémité longitudinale pour l'assemblage de l'élément modulaire sur un support, et deux doigts faisant saillie vers l'intérieur et jouant le rôle de centreurs sur le support. The sole may further comprise an attachment at each longitudinal end for assembling the modular element on a support, and two fingers projecting inwardly and acting as centralizers on the support.
Les canaux transversaux peuvent avoir une section droite de forme semi-circulaire de façon à former des passages transversaux de forme cylindrique lorsqu'un autre élément modulaire est monté contre ledit élément. Les poils d'un même élément modulaire peuvent être arrangés selon une ligne droite formant une unique rangée de poils. Alternativement, les poils peuvent être arrangés selon une ligne brisée formant deux rangées parallèles de poils. The transverse channels may have a cross section of semi-circular shape so as to form transverse passages of cylindrical shape when another modular element is mounted against said element. The bristles of the same modular element can be arranged in a straight line forming a single row of bristles. Alternatively, the bristles can be arranged in a broken line forming two parallel rows of bristles.
L’élément modulaire peut comprendre au moins deux poils dont les têtes respectives présentent des formes différentes. The modular element can include at least two bristles, the respective heads of which have different shapes.
L'invention a également pour objet un support de coupe à aspiration pour machine de coupe automatique de matériaux en feuilles comprenant une pluralité d'éléments modulaires tels que définis précédemment et montés sur au moins un support. The subject of the invention is also a suction cutting support for an automatic machine for cutting sheet materials comprising a plurality of modular elements as defined above and mounted on at least one support.
Les éléments modulaires peuvent être montés sur le support de sorte à obtenir un alignement des poils ordonné. Alternativement, des éléments modulaires peuvent être montés sur le support de sorte à obtenir un alignement des poils en quinconce. Encore alternativement, certains éléments modulaires sont montés sur le support de sorte à obtenir un alignement des poils ordonné et certains autres éléments modulaires sont montés sur le même support de sorte à obtenir un alignement des poils en quinconce. The modular elements can be mounted on the support so as to obtain an orderly alignment of the bristles. Alternatively, modular elements can be mounted on the support so as to obtain staggered alignment of the bristles. Still alternatively, certain modular elements are mounted on the support so as to obtain an orderly alignment of the bristles and certain other modular elements are mounted on the same support so as to obtain a staggered alignment of the bristles.
De préférence, la distance entre deux poils adjacents est supérieure à la plus grande dimension de la section droite de la tige des poils. Cette caractéristique permet d'éviter qu'un poil coupé venant au fond du pavé ne vienne écarter les poils autour. Preferably, the distance between two adjacent bristles is greater than the largest dimension of the cross section of the bristle shaft. This feature makes it possible to prevent a cut pile coming from the bottom of the paving stone from moving the surrounding hairs away.
Brève description des dessins Brief description of the drawings
[Fig. 1] La figure 1 est une vue en perspective d'un pavé de support de coupe selon un mode de réalisation de l'invention (configuration dite « ordonnée »). [Fig. 1] FIG. 1 is a perspective view of a cutting support block according to one embodiment of the invention (so-called “ordered” configuration).
[Fig. 2] La figure 2 est une vue en perspective d'un élément modulaire pour l'obtention du support de coupe de la figure 1. [Fig. 2] Figure 2 is a perspective view of a modular element for obtaining the cutting support of Figure 1.
[Fig. 3] La figure 3 est une vue de face de l'élément modulaire de la figure 2. [Fig. 3] Figure 3 is a front view of the modular element of Figure 2.
[Fig. 4] La figure 4 est une vue de côté de l'élément modulaire de la figure 2. [Fig. 4] Figure 4 is a side view of the modular element of Figure 2.
[Fig. 5] La figure 5 est une vue en perspective d'un pavé de support de coupe selon un autre mode de réalisation de l'invention (configuration dite « en quinconce »).[Fig. 5] FIG. 5 is a perspective view of a cutting support block according to another embodiment of the invention (so-called “staggered” configuration).
[Fig. 6] La figure 6 est une vue partielle et de dessus du pavé de support de coupe de la figure 5. [Fig. 7] La figure 7 est une vue en perspective d'un élément modulaire pour l'obtention du pavé de support de coupe de la figure 5. [Fig. 6] Figure 6 is a partial top view of the cutting support pad of Figure 5. [Fig. 7] Figure 7 is a perspective view of a modular element for obtaining the cutting support block of Figure 5.
[Fig. 8] La figure 8 est une vue d'une tête de poil d'élément modulaire selon une variante de réalisation. [Fig. 8] FIG. 8 is a view of a modular element bristle head according to an alternative embodiment.
[Fig. 9] La figure 9 est une vue en perspective d'un élément modulaire selon encore une variante de réalisation de l'invention. [Fig. 9] FIG. 9 is a perspective view of a modular element according to yet another variant embodiment of the invention.
[Fig. 10A] La figure 10A montre une variante d'arrangement des poils d'un même élément modulaire selon l'invention. [Fig. 10A] FIG. 10A shows an alternative arrangement of the bristles of the same modular element according to the invention.
[Fig. 10B] La figure 10B montre une autre variante d'arrangement des poils d'un même élément modulaire selon l'invention. [Fig. 10B] FIG. 10B shows another variant of the arrangement of the bristles of the same modular element according to the invention.
[Fig. 11] La figure 11 est une vue en perspective d'un élément modulaire selon l'invention dépourvu d'organe d'assemblage mécanique. [Fig. 11] Figure 11 is a perspective view of a modular element according to the invention without a mechanical assembly member.
[Fig. 12] La figure 12 est une vue partielle d'un élément modulaire selon encore une autre variante de réalisation de l'invention. [Fig. 12] FIG. 12 is a partial view of a modular element according to yet another variant embodiment of the invention.
Description des modes de réalisation Description of the embodiments
Le convoyeur d'une machine de coupe à lame vibrante permet d'entraîner le matériau à découper durant l'opération de coupe. La partie supérieure du convoyeur sert de support de coupe et la partie inférieure est généralement logée dans un caisson à l'intérieur duquel est établie une forte dépression afin de maintenir immobiles le matériau à découper durant l'opération de coupe. The conveyor belt of a vibrating blade cutting machine drives the material to be cut during the cutting operation. The upper part of the conveyor serves as a cutting support and the lower part is generally housed in a box inside which a strong depression is established in order to keep the material to be cut immobile during the cutting operation.
Le support de coupe à proprement peut être typiquement constitué d'un assemblage d'une pluralité de pavés montés sur une courroie d'entraînement tels que le pavé de support de coupe 2 représenté sur la figure 1. The cutting support itself may typically consist of an assembly of a plurality of blocks mounted on a drive belt such as the cutting support block 2 shown in Figure 1.
Ce pavé de support de coupe 2 se compose de l'assemblage entre eux d'une pluralité d'éléments modulaires 4 (par exemple au nombre de onze sur le mode de réalisation représenté par la figure 1). L'assemblage des éléments modulaires entre eux s'effectue par emboîtement de leurs faces latérales respectives comme décrit ci- après. Comme représenté plus précisément sur les figures 2 et 3, chaque élément modulaire 4 selon l'invention comprend une pluralité de poils 6 qui sont alignés selon une même et unique rangée de poils. This cutting support block 2 consists of assembling together a plurality of modular elements 4 (for example eleven in number in the embodiment shown in FIG. 1). The modular elements are assembled together by interlocking their respective side faces as described below. As shown more precisely in FIGS. 2 and 3, each modular element 4 according to the invention comprises a plurality of bristles 6 which are aligned in a same and single row of bristles.
Ces poils 6 présentent chacun un pied 8 qui est solidaire d'une semelle 10 commune à l'ensemble des poils, une tête 12 qui est opposée au pied et qui est destinée à servir de support de coupe, et une tige 9 qui relie le pied à la tête. These bristles 6 each have a foot 8 which is integral with a sole 10 common to all the bristles, a head 12 which is opposite the foot and which is intended to serve as a cutting support, and a rod 9 which connects the foot to head.
Par ailleurs, chaque poil 6 présente la particularité de posséder une tête 12 dont la plus grande section droite (c'est-à-dire la plus grande section réalisée perpendiculairement à l'axe principal du poil) englobe la plus grande section droite de sa tige 9. En d'autres termes, la plus grande section droite de la tête est strictement plus grande que la plus grande section droite de la tige 9 (i.e. elle l'entoure en lui étant plus grande). Furthermore, each bristle 6 has the particularity of having a head 12 of which the largest straight section (that is to say the largest section made perpendicular to the main axis of the bristle) encompasses the largest straight section of its rod 9. In other words, the largest cross section of the head is strictly greater than the largest cross section of the rod 9 (ie it surrounds it by being larger).
Par exemple, comme représenté sur la figure 4, lorsque la tête 12 et la tige 9 du poil ont chacun une section droite de forme circulaire, la plus grande section droite de la tête présente un diamètre D qui est strictement supérieur au plus grand diamètre d de la section droite de la tige. For example, as shown in Figure 4, when the head 12 and the hair shaft 9 each have a circular cross section, the largest cross section of the head has a diameter D which is strictly greater than the largest diameter d of the straight section of the rod.
En outre, dans ce mode de réalisation, la tête 12 de chaque poil présente une forme de tronc de cône inversé ayant une section droite circulaire du côté extérieur qui est supérieure à celle du côté intérieur (i.e. la grande base B du tronc de cône est disposée vers l'extérieur de l'élément modulaire et la petite base b du tronc de cône est tournée vers l'intérieur). Further, in this embodiment, the head 12 of each bristle has the shape of an inverted truncated cone having a circular cross section of the outer side which is greater than that of the inner side (ie the large base B of the truncated cone is arranged towards the outside of the modular element and the small base b of the truncated cone is turned towards the inside).
Bien entendu, l'invention ne se limite pas à ces formes géométriques particulières pour le poil, sa tête et son pied. Par exemple, il est possible d'imaginer que le pied possède une forme de tronc de cône ou de pyramide à base polygonale et la tête présente une section droite autre que circulaire (carrée, hexagonale, etc.). Of course, the invention is not limited to these particular geometric shapes for the hair, its head and its foot. For example, it is possible to imagine that the foot has the shape of a truncated cone or pyramid with a polygonal base and the head has a cross section other than circular (square, hexagonal, etc.).
Afin de permettre l'assemblage mécanique de plusieurs éléments modulaires 4 entre eux, la semelle 10 de chacun d'entre eux peut comprendre, au niveau de chacune de ses deux faces latérales 10a, 10b, au moins un organe d'assemblage mécanique 13 avec un autre élément modulaire. Par exemple, chacune des faces latérales 10a, 10b de la semelle d'un élément modulaire peut être munie de quatre organes d'assemblage mécanique espacés les uns des autres, à savoir : un organe d'assemblage d'extrémité 13a à chacune de ses extrémités longitudinales 10c, lOd et deux organes d'assemblage centraux 13b positionnés entre ses extrémités longitudinales. In order to allow the mechanical assembly of several modular elements 4 together, the sole 10 of each of them may comprise, at each of its two lateral faces 10a, 10b, at least one mechanical assembly member 13 with another modular element. For example, each of the side faces 10a, 10b of the sole of a modular element can be provided with four mechanical assembly members spaced from each other, namely: an end assembly member 13a at each of its longitudinal ends 10c, 10d and two central assembly members 13b positioned between its longitudinal ends.
Toujours à titre d'exemple non limitatif, les organes d'assemblage 13 des deux faces latérales d'un élément modulaire peuvent être alignés les uns en face des autres.Still by way of non-limiting example, the assembly members 13 of the two lateral faces of a modular element can be aligned one opposite the other.
Comme représenté plus précisément sur l'exemple de la figure 3, les organes d'assemblage mécanique 13 peuvent comprendre chacun au moins un ergot 14 qui fait saillie par rapport à la face latérale de la semelle et un évidement 16 en retrait par rapport à la face latérale de la semelle, l'ergot et l'évidement étant par exemple positionnés transversalement l'un au-dessus de l'autre. As shown more precisely in the example of Figure 3, the mechanical assembly members 13 can each include at least one lug 14 which projects relative to the lateral face of the sole and a recess 16 set back relative to the lateral face of the sole, the lug and the recess being for example positioned transversely one above the other.
Lors de l'assemblage mécanique de deux éléments modulaires entre eux, les ergots 14 des organes d'assemblage mécanique de l'un des éléments modulaires viennent s'emboîter à l'intérieur des évidements 16 des organes d'assemblage mécanique de l'autre élément modulaire (et réciproquement) avec un maintien pouvant être assuré par une colle ou par clipsage par exemple. L'assemblage entre eux de plusieurs éléments modulaires permet d'assurer une continuité de la face supérieure de la semelle. During the mechanical assembly of two modular elements together, the lugs 14 of the mechanical assembly members of one of the modular elements fit inside the recesses 16 of the mechanical assembly members of the other. modular element (and vice versa) with a hold that can be provided by glue or by clipping for example. The assembly of several modular elements together makes it possible to ensure continuity of the upper face of the sole.
Alternativement, les éléments modulaires pourraient être simplement positionnés les uns à côté des autres sur un pavé ou directement sur un support et maintenus entre eux par un mécanisme adéquat. Alternatively, the modular elements could simply be positioned next to each other on a paving stone or directly on a support and held together by a suitable mechanism.
Toujours selon l'invention, les deux faces latérales 10a, 10b de la semelle 10 de l'élément modulaire comprennent chacune une pluralité de canaux transversaux 18 qui font communiquer la face extérieure de la semelle (c'est-à-dire la face à partir de laquelle s'étendent les poils) avec sa face intérieure (c'est-à-dire la face opposée à la face extérieure). Still according to the invention, the two side faces 10a, 10b of the sole 10 of the modular element each comprise a plurality of transverse channels 18 which communicate the outer face of the sole (that is to say the face to from which the bristles extend) with its inner face (that is, the face opposite to the outer face).
Ces canaux transversaux 18 qui sont avantageusement régulièrement répartis sur toute la longueur de la semelle permettent de donner une porosité à la semelle en permettant à l'air d'aspiration de passer au travers de la semelle. A titre d'exemple, les canaux transversaux 18 peuvent présenter chacun une section droite de forme semi-circulaire de façon à former des passages transversaux de forme cylindrique lorsque deux éléments modulaires sont montés l'un contre l'autre.These transverse channels 18, which are advantageously regularly distributed over the entire length of the sole, make it possible to impart porosity to the sole by allowing the suction air to pass through the sole. By way of example, the transverse channels 18 may each have a cross section of semicircular shape so as to form transverse passages of cylindrical shape when two modular elements are mounted one against the other.
Bien entendu, il est possible d'envisager une forme différente pour la section droite des canaux transversaux, par exemple une forme elliptique, polygonale ou autre.Of course, it is possible to envisage a different shape for the cross section of the transverse channels, for example an elliptical, polygonal or other shape.
Selon une disposition avantageuse, la semelle 10 de l'élément modulaire comprend en outre, au niveau de chacune de ses deux faces latérales 10a, 10b, un canal longitudinal 20 qui s'étend entre ses deux extrémités longitudinales 10c, lOd et qui communique avec les canaux transversaux 18 afin de répartir de façon homogène l'air d'aspiration dans ces derniers. According to an advantageous arrangement, the sole 10 of the modular element further comprises, at each of its two lateral faces 10a, 10b, a longitudinal channel 20 which extends between its two longitudinal ends 10c, 10d and which communicates with the transverse channels 18 in order to distribute the suction air in a homogeneous manner therein.
A titre d'exemple, le canal longitudinal 20 peut présenter une section droite de forme semi-circulaire de façon à former un passage longitudinal de forme cylindrique lorsque deux éléments modulaires sont montés l'un contre l'autre. By way of example, the longitudinal channel 20 may have a cross section of semi-circular shape so as to form a longitudinal passage of cylindrical shape when two modular elements are mounted against each other.
Bien entendu, il est possible d'envisager une forme différente pour la section droite du canal longitudinal, par exemple une forme elliptique, polygonale ou autre. Of course, it is possible to envisage a different shape for the cross section of the longitudinal channel, for example an elliptical, polygonal or other shape.
Selon une autre disposition avantageuse, la semelle 10 de l'élément modulaire comprend en outre au moins une attache 22 en forme de crochet à chacune de ses extrémités longitudinales 10c, lOd, et deux doigts 24 faisant saillie vers l'intérieur de la semelle. According to another advantageous arrangement, the sole 10 of the modular element further comprises at least one fastener 22 in the form of a hook at each of its longitudinal ends 10c, 10d, and two fingers 24 projecting towards the inside of the sole.
Les attaches 22 en forme de crochets permettent de monter le pavé de support de coupe formé par l'assemblage de plusieurs éléments modulaires sur un support (non représenté) destiné à être monté directement sur la courroie d'entraînement du convoyeur de coupe. Quant aux doigts 24, ils jouent le rôle de centreurs sur le support. The fasteners 22 in the form of hooks make it possible to mount the cutting support block formed by the assembly of several modular elements on a support (not shown) intended to be mounted directly on the drive belt of the cutting conveyor. As for the fingers 24, they play the role of centralizers on the support.
Bien entendu, il est possible d'envisager d'autres formes d'attaches pour permettre de monter les éléments modulaires sur un pavé ou directement sur un support de coupe. Par exemple, ces attaches pourraient avoir une forme de T. Of course, it is possible to envisage other forms of fasteners to allow the modular elements to be mounted on a paving stone or directly on a cutting support. For example, these ties could have a T shape.
Dans le mode de réalisation des figures 1 à 4, les éléments modulaires sont assemblés au sein d'un même pavé de sorte à obtenir un alignement ordonné des poils, c'est-à-dire que les poils 6 au sein d'un même pavé 2 sont alignés selon les directions longitudinales et transversales. In the embodiment of Figures 1 to 4, the modular elements are assembled within the same block so as to obtain an orderly alignment of the bristles, that is to say that the bristles 6 within the same block 2 are aligned in the longitudinal and transverse directions.
Dans un autre mode de réalisation représenté par les figures 5 à 7, au moins certains des éléments modulaires d'un même pavé peuvent être assemblés de sorte à obtenir un alignement des poils en quinconce. In another embodiment represented by FIGS. 5 to 7, at least some of the modular elements of the same block can be assembled so as to obtain a staggered alignment of the bristles.
Ainsi, dans le pavé 2' représenté sur les figures 5 et 6, les éléments modulaires 4-1 à 4-4 sont assemblés de sorte à obtenir un alignement des poils ordonné, tandis que les éléments modulaires 4'-l à 4'-4 sont assemblés de sorte à obtenir un alignement des poils en quinconce. Bien entendu, d'autres configurations sont possibles en fonction des besoins en mélangeant les deux types d'éléments modulaires. Thus, in the block 2 'shown in Figures 5 and 6, the modular elements 4-1 to 4-4 are assembled so as to obtain an orderly alignment of the bristles, while the modular elements 4'-1 to 4'- 4 are assembled so as to obtain a staggered alignment of the bristles. Of course, other configurations are possible according to needs by mixing the two types of modular elements.
La figure 7 représente en détails et en perspective un élément modulaire 4' permettant l'obtention d'un assemblage en quinconce des poils au sein d'un même pavé de support. FIG. 7 shows in detail and in perspective a modular element 4 'making it possible to obtain a staggered assembly of the bristles within the same support block.
Par rapport au mode de réalisation des figures 1 à 4, cet élément modulaire 4' se distingue par la forme des canaux transversaux 18' pour le passage de l'air d'aspiration entre la face intérieure et la face extérieure de la semelle 10. Compared to the embodiment of Figures 1 to 4, this modular element 4 'is distinguished by the shape of the transverse channels 18' for the passage of the suction air between the inner face and the outer face of the sole 10.
En effet, dans ce mode de réalisation, les canaux transversaux 18' de l'élément modulaire 4' présentent chacun une section droite en forme de double demi-cercle de façon à former des passages transversaux 26 en forme de haricot lorsqu'un autre élément modulaire est assemblé sur ledit élément (voir la figure 6). Indeed, in this embodiment, the transverse channels 18 'of the modular element 4' each have a cross section in the form of a double semicircle so as to form transverse passages 26 in the form of a bean when another element modular is assembled on said element (see figure 6).
Par ailleurs, un canal longitudinal 20' s'étendant entre les extrémités longitudinales de la semelle communique avec les canaux transversaux 18' afin de répartir de façon homogène l'air d'aspiration dans ces derniers. Furthermore, a longitudinal channel 20 'extending between the longitudinal ends of the sole communicates with the transverse channels 18' in order to distribute the suction air uniformly in the latter.
La figure 8 représente une tête de poil d'élément modulaire selon une variante de réalisation, cette forme de poil pouvant s'appliquer aussi bien aux éléments modulaires du mode de réalisation des figures 1 à 4 qu'à ceux du mode de réalisation des figures 5 à 7. FIG. 8 represents a modular element bristle head according to an alternative embodiment, this form of bristle being able to apply equally well to the modular elements of the embodiment of FIGS. 1 to 4 and to those of the embodiment of figures 5 to 7.
Dans cette variante de réalisation, la tête 12' des poils 6' possède une forme de tronc de cône ayant une section droite circulaire du côté intérieur qui est supérieure à celle du côté extérieur (i.e. la petite base b_' du tronc de cône est disposée vers l'extérieur de l'élément modulaire et la grande base B_' du tronc de cône est tournée vers l'intérieur). In this variant embodiment, the head 12 'of the bristles 6' has the shape of a truncated cone having a circular cross section on the inner side which is greater than that on the outer side (ie the small base b_ 'of the truncated cone is arranged toward the outside of the modular element and the large base B_ 'of the truncated cone is turned inwards).
Dans cette variante de réalisation, la tête 12' présente également une section droite circulaire dont la plus grande section droite (c'est-à-dire au niveau de la grande base B_') présente un diamètre D_' qui est strictement supérieur au plus grand diamètre d_' de la section droite circulaire de la tige 9' du poil. In this variant embodiment, the head 12 'also has a circular cross section, the largest cross section of which (that is to say at the level of the large base B_') has a diameter D_ 'which is strictly greater than the most large diameter d_ 'of the circular cross section of the hair shaft 9'.
Par ailleurs, quelle que soit la variante de réalisation des poils des éléments modulaires 4, 4', la tige 9, 9' de chaque poil 6, 6' peut présenter une forme cylindrique entre sa tête 12, 12' et son pied 8, 8'. Bien entendu, toute autre forme est également envisageable (par exemple avec une section droite carrée, polygonale, etc.). Moreover, whatever the variant embodiment of the bristles of the modular elements 4, 4 ', the rod 9, 9' of each bristle 6, 6 'can have a cylindrical shape between its head 12, 12' and its foot 8, 8 '. Of course, any other shape can also be envisaged (for example with a square or polygonal cross section, etc.).
Ainsi, la figure 9 représente encore une autre variante de réalisation d'un élément modulaire 4" de support de coupe dans lequel la tige 9" des poils 6"présente une section droite de forme hexagonale entre la tête 12" et le pied 8". Par ailleurs, dans cette variante de réalisation, la tête 12" présente une section droite de forme octogonale. Thus, FIG. 9 shows yet another variant embodiment of a modular cutting support element 4 "in which the rod 9" of the bristles 6 "has a cross section of hexagonal shape between the head 12" and the foot 8 ". Furthermore, in this variant embodiment, the head 12 "has a cross section of octagonal shape.
Une telle forme générale des poils 6, 6', 6" et la réalisation d'éléments modulaires comprenant des rangées uniques de poils permet de fabriquer ces derniers par moulage en une seule pièce. En particulier, une telle configuration permet de s'affranchir des contraintes de forme de poils que nécessitait le démoulage. Such a general shape of the bristles 6, 6 ', 6 "and the production of modular elements comprising single rows of bristles makes it possible to manufacture the latter by molding in a single piece. In particular, such a configuration makes it possible to do without bristle shape constraints required for demolding.
Bien entendu, il est possible d'envisager un autre mode de fabrication des éléments modulaires, par exemple par fabrication additive ou tout autre procédé industriel de fabrication. Of course, it is possible to envisage another mode of manufacturing the modular elements, for example by additive manufacturing or any other industrial manufacturing process.
On notera encore que tous les poils d'un même élément modulaire n'ont pas nécessairement une tête dont la section droite englobe la plus grande section droite de la tige. Il est en effet possible d'envisager que seuls certains poils d'un même élément modulaire présentent une telle caractéristique, les autres poils de l'élément modulaire ayant une tête de section droite identique à celle de leur tige. It will also be noted that all the bristles of the same modular element do not necessarily have a head, the cross section of which includes the largest straight section of the rod. It is in fact possible to envisage that only certain bristles of the same modular element have such a characteristic, the other bristles of the modular element having a head of cross section identical to that of their rod.
Par ailleurs, les figures 10A et 10B montrent deux arrangements possibles pour les poils 6, 6', 6" d'un même élément modulaire 4, 4'. Sur l'exemple d'arrangement de la figure 10A, les poils d'un même élément modulaire sont arrangés selon une ligne droite L1 formant une unique rangée de poils. En d'autres termes, les axes longitudinaux respectifs des poils sont tous alignés sur une même ligne droite Ll. Furthermore, FIGS. 10A and 10B show two possible arrangements for the bristles 6, 6 ', 6 "of the same modular element 4, 4'. In the example arrangement of FIG. 10A, the bristles of the same modular element are arranged along a straight line L1 forming a single row of bristles. In other words, the respective longitudinal axes of the bristles are all aligned on the same straight line L1.
Alternativement, sur l'exemple de réalisation de la figure 10B, les poils d'un même élément modulaire peuvent être arrangés selon une ligne brisée (ou en dents de scie) L2 de sorte à former deux rangées de poils RI, R2 qui sont parallèles. Alternatively, in the exemplary embodiment of FIG. 10B, the bristles of the same modular element can be arranged along a broken line (or sawtooth) L2 so as to form two rows of bristles RI, R2 which are parallel .
Quelle que soit la variante de réalisation, on notera que l'élément modulaire peut être fabriqué par moulage en une seule pièce. Whatever the variant embodiment, it will be noted that the modular element can be manufactured by molding in a single piece.
De même, comme représenté sur la figure 11, l'élément modulaire 4 selon l'invention peut être dépourvu d'organe d'assemblage mécanique. Dans ce cas, les éléments modulaires d'un même support sont simplement positionnés les uns contre les autres sur le même support et maintenus entre eux par un mécanisme adéquat.Likewise, as shown in FIG. 11, the modular element 4 according to the invention may be devoid of any mechanical assembly member. In this case, the modular elements of the same support are simply positioned against each other on the same support and held together by a suitable mechanism.
La figure 12 illustre, de façon partielle, encore une autre variante de réalisation d'un élément modulaire 4'" de support de coupe dans lequel les têtes des poils ont des formes différentes. FIG. 12 partially illustrates yet another alternative embodiment of a modular cutting support element 4 '"in which the heads of the bristles have different shapes.
Ainsi, sur l'exemple de réalisation de la figure 12, l'élément modulaire comprend une alternance de poils 6a dont la tête respective 12a possède une forme de tronc de cône dont la grande base est tournée vers l'extérieur et de poils 6b dont la tête respective 12b possède une forme de tronc de cône dont la grande base est tournée vers l'intérieur. Thus, in the embodiment of FIG. 12, the modular element comprises an alternation of bristles 6a, the respective head 12a of which has the shape of a truncated cone, the large base of which is turned outwards and of bristles 6b of which the respective head 12b has the shape of a truncated cone, the large base of which is turned inward.
Une telle alternance « en tête-bêche » des têtes de poils a pour avantage d'augmenter la densité apparente de poils, ce qui permet d'accroître le maintien du tissu. Such an “head-to-tail” alternation of the heads of the bristles has the advantage of increasing the apparent density of the bristles, which makes it possible to increase the retention of the fabric.
Bien entendu, il est possible d'envisager toute autre configuration possible (avec plusieurs formes différentes de têtes de poils) en fonction des besoins. De même, cette variante de réalisation peut être associée aux autres variantes de réalisation précédemment décrite. Of course, it is possible to envisage any other possible configuration (with several different shapes of the heads of the bristles) as a function of the needs. Likewise, this variant embodiment can be combined with the other variant embodiments described above.

Claims

Revendications Claims
[Revendication 1] Elément modulaire (4 ; 4' ; 4" ; 4"') de support de coupe (2 ; 2 à aspiration d'une machine de coupe automatique par lame de matériaux en feuilles, comprenant une pluralité de poils (6 ; 6' ; 6" ; 6a-6b) arrangés selon une même et unique ligne (L1 ; L2), au moins certains poils ayant chacun un pied (8 ; 8' ; 8") solidaire d'une semelle (10) destinée à être montée sur un support, une tête (12 ; 12' ; 12" ; 12a-12b) opposée au pied sur laquelle est destinée à reposer un matériau en feuilles à découper, et une tige (9 ; 9' ; 9") reliant la tête au pied et dont la plus grande section droite est strictement incluse dans la plus grande section droite de la tête, la semelle comprenant, au niveau de chacune de ses faces latérales (10a, 10b), une pluralité de canaux transversaux (18 ; 180 pour le passage de l'air d'aspiration faisant communiquer une face supérieure de la semelle à partir de laquelle s'étendent les poils avec une face intérieure opposée à la face supérieure. [Claim 1] Modular element (4; 4 '; 4 "; 4"') of suction cutting support (2; 2 of an automatic blade cutting machine of sheet material, comprising a plurality of bristles (6 ; 6 '; 6 "; 6a-6b) arranged along a single line (L1; L2), at least some bristles each having a foot (8; 8'; 8") integral with a sole (10) intended to be mounted on a support, a head (12; 12 '; 12 "; 12a-12b) opposite the foot on which is intended to rest a sheet material to be cut, and a rod (9; 9'; 9") connecting the head to the foot and the largest straight section of which is strictly included in the largest straight section of the head, the sole comprising, at each of its lateral faces (10a, 10b), a plurality of transverse channels (18 180 for the passage of the suction air communicating an upper face of the sole from which the bristles extend with an inner face opposite to the upper face.
[Revendication 2] Elément modulaire selon la revendication 1, dans lequel la semelle (10) comprend en outre, au niveau de chacune de ses faces latérales (10a, 10b), au moins un canal longitudinal (20 ; 200 s'étendant entre les extrémités longitudinales (10c, lOd) de la semelle et communiquant avec les canaux transversaux (18 ; 18') afin de répartir de façon homogène l'air d'aspiration dans lesdits canaux transversaux. [Claim 2] A modular element according to claim 1, wherein the sole (10) further comprises, at each of its side faces (10a, 10b), at least one longitudinal channel (20; 200 extending between the longitudinal ends (10c, 10d) of the sole and communicating with the transverse channels (18; 18 ') in order to distribute the suction air uniformly in said transverse channels.
[Revendication 3] Elément modulaire selon l'une des revendications 1 et 2, dans lequel la semelle comprend en outre, au niveau de chacune de ses faces latérales, au moins un organe d'assemblage mécanique (13) avec un autre élément modulaire. [Claim 3] Modular element according to one of claims 1 and 2, wherein the sole further comprises, at each of its side faces, at least one mechanical assembly member (13) with another modular element.
[Revendication 4] Elément modulaire selon la revendication 3, dans lequel chaque organe d'assemblage (13) comprend au moins un ergot (14) faisant saillie par rapport à une face latérale (10a, 10b) de la semelle et destiné à venir s'emboîter dans un évidement correspondant d'un organe d'assemblage d'un élément modulaire adjacent, et un évidement (16) en retrait par rapport à la face latérale de la semelle et destiné à venir recevoir par emboîtement un ergot correspondant de l'organe d'assemblage de l'élément modulaire adjacent. [Claim 4] A modular element according to claim 3, wherein each assembly member (13) comprises at least one lug (14) projecting with respect to a lateral face (10a, 10b) of the sole and intended to come s 'fit into a corresponding recess of an assembly member of an adjacent modular element, and a recess (16) set back from to the lateral face of the sole and intended to receive by interlocking a corresponding lug of the assembly member of the adjacent modular element.
[Revendication 5] Elément modulaire selon l'une quelconque des revendications 1 à 4, dans lequel au moins certains poils (6 ; 6') comprennent une tête (12 ; 12 ) ayant une forme de tronc de cône et une tige (9 ; 9') ayant une forme cylindrique. [Claim 5] A modular element according to any one of claims 1 to 4, wherein at least some bristles (6; 6 ') comprise a head (12; 12) having a truncated cone shape and a shank (9; 9 ') having a cylindrical shape.
[Revendication 6] Elément modulaire selon la revendication 5, dans lequel la tête (12') de chaque poil (6') présente une forme de tronc de cône ayant une section droite circulaire du côté intérieur qui est supérieure à celle du côté extérieur. [Claim 6] A modular element according to claim 5, wherein the head (12 ') of each bristle (6') has a truncated cone shape having a circular cross section of the inner side which is larger than that of the outer side.
[Revendication 7] Elément modulaire selon la revendication 5, dans lequel la tête (12) de chaque poil (6) présente une forme de tronc de cône inversé ayant une section droite circulaire du côté extérieur qui est supérieure à celle du côté intérieur. [Claim 7] A modular element according to claim 5, wherein the head (12) of each bristle (6) has an inverted truncated cone shape having a circular cross section of the outer side which is larger than that of the inner side.
[Revendication 8] Elément modulaire selon l'une quelconque des revendications 1 à 4, dans lequel au moins certains poils (6") présentent une tige (9") et une tête (12") de section droite de forme polygonale. [Claim 8] A modular element according to any one of claims 1 to 4, in which at least some bristles (6 ") have a rod (9") and a head (12 ") of cross section of polygonal shape.
[Revendication 9] Elément modulaire selon la revendication 8, dans lequel la tige (9") des poils présentent une section droite de forme hexagonale et la tête (12") desdits poils présentent une section droite de forme octogonale.[Claim 9] A modular element according to claim 8, wherein the shank (9 ") of the bristles have a cross section of hexagonal shape and the head (12") of said bristles have a cross section of octagonal shape.
[Revendication 10] Elément modulaire selon l'une quelconque des revendications 1 à 9, dans lequel la semelle (10) comprend en outre une attache (22) à chaque extrémité longitudinale pour l'assemblage de l'élément modulaire sur un support et deux doigts (24) faisant saillie vers l'intérieur et jouant le rôle de centreurs sur le support. [Claim 10] A modular element according to any one of claims 1 to 9, wherein the sole (10) further comprises a clip (22) at each longitudinal end for assembling the modular element on a support and two. fingers (24) projecting inward and playing the role of centralizers on the support.
[Revendication 11] Elément modulaire selon l'une quelconque des revendications 1 à 10, dans lequel les canaux transversaux (18) ont une section droite de forme semi-circulaire de façon à former des passages transversaux de forme cylindrique lorsqu'un autre élément modulaire est monté contre ledit élément. [Claim 11] A modular member according to any one of claims 1 to 10, wherein the transverse channels (18) have a semicircular shaped cross section so as to form cylindrically shaped transverse passages when another modular member is mounted against said element.
[Revendication 12] Elément modulaire selon l'une quelconque des revendications 1 à 11, dans lequel il est obtenu par moulage. [Claim 12] A modular element according to any one of claims 1 to 11, in which it is obtained by molding.
[Revendication 13] Elément modulaire selon l'une quelconque des revendications 1 à 12, dans lequel les poils (6 ; 6' ; 6") sont arrangés selon une ligne droite (Ll) formant une unique rangée de poils. [Claim 13] A modular element according to any one of claims 1 to 12, wherein the bristles (6; 6 '; 6 ") are arranged in a straight line (L1) forming a single row of bristles.
[Revendication 14] Elément modulaire selon l'une quelconque des revendications 1 à 12, dans lequel les poils (6 ; 6' ; 6") sont arrangés selon une ligne brisée (L2) formant deux rangées parallèles (RI, R2) de poils. [Claim 14] A modular element according to any one of claims 1 to 12, wherein the bristles (6; 6 '; 6 ") are arranged in a broken line (L2) forming two parallel rows (RI, R2) of bristles .
[Revendication 15] Elément modulaire (4'") selon l'une quelconque des revendications 1 à 14, comprenant au moins deux poils (6a, 6b) dont les têtes respectives (12a, 12b) présentent des formes différentes. [Claim 15] Modular element (4 '") according to any one of claims 1 to 14, comprising at least two bristles (6a, 6b) whose respective heads (12a, 12b) have different shapes.
[Revendication 16] Support de coupe (2 ; 2') à aspiration pour machine de coupe automatique de matériaux en feuilles comprenant une pluralité d'éléments modulaires (4 ; 4 selon l'une quelconque des revendications 1 à 15 montés sur un au moins support. [Claim 16] A suction cutting support (2; 2 ') for an automatic sheet material cutting machine comprising a plurality of modular elements (4; 4 according to any one of claims 1 to 15 mounted on at least one support.
[Revendication 17] Support de coupe (2) selon la revendication 16, dans lequel les éléments modulaires (4) sont montés sur le support de sorte à obtenir un alignement des poils ordonné. [Claim 17] A cutting support (2) according to claim 16, wherein the modular elements (4) are mounted on the support so as to obtain an orderly alignment of the bristles.
[Revendication 18] Support de coupe (20 selon la revendication 16, dans lequel des éléments modulaires (40 sont montés sur le support de sorte à obtenir un alignement des poils en quinconce. [Claim 18] A cutting support (20 according to claim 16, wherein modular elements (40 are mounted on the support so as to achieve staggered alignment of the bristles.
[Revendication 19] Support de coupe selon la revendication 16, dans lequel certains éléments modulaires sont montés sur le support de sorte à obtenir un alignement des poils ordonné et certains autres éléments modulaires sont montés sur le même support de sorte à obtenir un alignement des poils en quinconce. [Claim 19] A cutting support according to claim 16, wherein some modular elements are mounted on the support so as to achieve orderly pile alignment and certain other modular elements are mounted on the same holder so as to obtain pile alignment. in a staggered arrangement.
[Revendication 20] Support de coupe selon l'une quelconque des revendications 16 à 19, dans lequel la distance entre deux poils adjacents est supérieure à la plus grande dimension de la section droite de la tige des poils. [Claim 20] A cutting support according to any one of claims 16 to 19, wherein the distance between two adjacent bristles is greater than the greatest dimension of the cross section of the shank of the bristles.
EP21716799.8A 2020-03-27 2021-03-10 Modular element for suction cutting bed in an automatic machine for cutting sheet material Active EP4096885B1 (en)

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HRP20240479TT HRP20240479T1 (en) 2020-03-27 2021-03-10 Modular element for suction cutting bed in an automatic machine for cutting sheet material
RS20240406A RS65434B1 (en) 2020-03-27 2021-03-10 Modular element for suction cutting bed in an automatic machine for cutting sheet material

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FR2003043A FR3108547B1 (en) 2020-03-27 2020-03-27 Modular suction cutting support element of an automatic sheet material cutting machine
PCT/FR2021/050407 WO2021191522A1 (en) 2020-03-27 2021-03-10 Modular support element for aspirated cutting in a machine for automatic cutting of sheet material

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US4205835A (en) 1977-05-13 1980-06-03 Gerber Garment Technology, Inc. Bristle bed for vacuum table
ITMI20011626A1 (en) * 2001-07-26 2003-01-26 Matteo Zanesi ASPIRATNE ASSEMBLY FOR CUTTING PLAN OF MACHINES FOR CUTTING SHEET MATERIALS

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CN115884860A (en) 2023-03-31
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PT4096885T (en) 2024-04-22
ES2977342T3 (en) 2024-08-22
US20230114746A1 (en) 2023-04-13
HRP20240479T1 (en) 2024-08-30
EP4096885B1 (en) 2024-02-21
FR3108547B1 (en) 2022-04-01
RS65434B1 (en) 2024-05-31
HUE066445T2 (en) 2024-08-28
BR112022018940A2 (en) 2022-12-13

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