FR2799985A1 - Filter for e.g. tea, is formed from metal mesh shaped into half-tube with center slit opening for bending together by edge bars to form cylinder with closed base - Google Patents

Filter for e.g. tea, is formed from metal mesh shaped into half-tube with center slit opening for bending together by edge bars to form cylinder with closed base Download PDF

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Publication number
FR2799985A1
FR2799985A1 FR9913476A FR9913476A FR2799985A1 FR 2799985 A1 FR2799985 A1 FR 2799985A1 FR 9913476 A FR9913476 A FR 9913476A FR 9913476 A FR9913476 A FR 9913476A FR 2799985 A1 FR2799985 A1 FR 2799985A1
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France
Prior art keywords
tube
filter
vertical wall
shells
producing
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Granted
Application number
FR9913476A
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French (fr)
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FR2799985B1 (en
Inventor
Philippe Chretien
Eric Villaume
Antonio Chiga
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Gantois SARL
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Gantois SARL
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Priority to FR9913476A priority Critical patent/FR2799985B1/en
Publication of FR2799985A1 publication Critical patent/FR2799985A1/en
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Publication of FR2799985B1 publication Critical patent/FR2799985B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

To produce a filter (1) of a metal mesh, with a symmetrical vertical plane with a vertical wall (2) and a closed base (3), the metal mesh (4) is shaped to form a half-tube (5) around an axis (A) with rounded ends. The half-tube is bent into shape, and a slit opening (6) is formed at the center of the half-tube at a tangent to it and at right angles to its axis, to give two half-shells (7,7') linked together by strap sections (8,8') at the ends of the opening. The two half-shells are bent by 90 deg towards each other to form the circular and vertical wall with a closed base. Preferred Features: The shaping of the metal mesh (4), the bending of the half-tube (5) and a slit (6) opening formation are all executed simultaneously. The joint (9) between the two half-shells (7,7') is welded to give the vertical wall (2) and closed base (3). The filter structure can be molded at least along the plane of the joint (9) and around the upper edge (10) of the vertical wall (2) and at the exterior of the base (3).

Description

présente invention se rapporte au domaine de la réalisation filtres en tissu métallique à plan de symétrie vertical, du type comportant au moins paroi sensiblement verticale, un fond utilisables par exemple pour filtration du thé ou de toute autre matière. The present invention relates to the field of production of metal fabric filters with a vertical plane of symmetry, of the type comprising at least substantially vertical wall, a bottom used for example for filtration of tea or any other material.

antérieur connaît déjà des procédés de réalisation de filtres en tissu métallique à plan de symétrie vertical du type comportant une paroi sensiblement verticale un fond. L'art antérieur connaît par exemple une première méthode qui consiste réaliser la paroi verticale à l'aide d'une pièce en tissu métallique rectangulaire puis à joindre les coins de la pièce rectangulaire afin de réaliser un cylindre par soudure du plan de joint, puis à souder une pièce de fond rapportée au fond du cylindre. Prior art already knows methods of making metal fabric filters with vertical plane of symmetry of the type having a substantially vertical wall a bottom. The prior art knows, for example, a first method consisting in making the vertical wall using a piece of rectangular metal fabric and then joining the corners of the rectangular part in order to produce a cylinder by welding the joint plane, then soldering a bottom piece attached to the bottom of the cylinder.

L'art antérieur connaît également une deuxième méthode consiste à réaliser deux demi-cylindres indépendants à bouts ronds et à les assembler ensuite, par exemple par soudage. The prior art also knows a second method consists in producing two independent half-cylinders with round ends and then assemble them, for example by welding.

méthodes sont difficiles à mettre en ceuvre industriellement car elles nécessitent beaucoup de manipulations délicates et beaucoup de precision lors de l'assemblage des éléments. methods are difficult to implement industrially because they require a lot of delicate manipulations and a lot of precision during the assembly of the elements.

présente invention entend remédier aux inconvénients de l'art antérieur en proposant de supprimer l'étape d'assemblage d'éléments distincts et en proposant de réaliser les filtres par pliage selon le plan de symétrie vertical du filtre d'une pièce unique constituée de deux demi-coquilles, ces deux demi-coquilles étant liées entre elles par deux barrettes de matière servant d'articulation. The present invention intends to overcome the disadvantages of the prior art by proposing to eliminate the step of assembling distinct elements and proposing to make the filters by folding according to the vertical plane of symmetry of the filter of a single piece consisting of two half-shells, these two half-shells being linked together by two strips of material serving as articulation.

Avantageusement, cette pièce unique constituée de deux demi coquilles liées deux barrettes d'articulation est obtenue en réalisant demi-tube comportant un axe et en opérant une fente au centre du demi-tube, tangentiellement au demi tube et perpendiculairement à son axe. Advantageously, this single piece consisting of two half-shells linked two knuckle bars is obtained by producing half-tube having an axis and operating a slot in the center of the half-tube, tangentially to the half-tube and perpendicular to its axis.

Avantageusement également, ce demi-tube à fente est obtenu par une opération unique d'emboutissage d'un tissu métallique, de détourage du demi-tube obtenu et de réalisation de la fente à l'aide d'un outil unique. Advantageously also, this slit half-tube is obtained by a single operation of stamping a metal fabric, trimming the half-tube obtained and making the slot with a single tool.

La présente invention se rapporte également aux filtres comportant moins une paroi sensiblement verticale, un fond et au moins un plan de symétrie vertical réalisés par la mise en ceuvre du procédé selon l'invention. On comprendra mieux l'invention à l'aide de la description faite ci-après d'un mode de mise en oeuvre donné à titre d'exemple non limitatif, en référence à la figure unique annexée. The present invention also relates to filters having less a substantially vertical wall, a bottom and at least one vertical plane of symmetry achieved by the implementation of the method according to the invention. The invention will be better understood by means of the description given below of an embodiment given by way of non-limiting example, with reference to the single appended figure.

Le procedé selon l'invention, illustré figure 1, est un procédé de réalisation d'un filtre (1) tissu métallique, du type comportant au moins une paroi sensiblement verticale (2), un fond (3) et au moins un plan de symétrie vertical, caractérisé en ce qu'il comporte - une étape d'emboutissage d'un tissu métallique (4), afin de réaliser un demi- tube (5) comportant un axe A et des bouts sensiblement arrondis, - une étape détourage dudit demi-tube (5), - une étape de réalisation d'une fente (6) au centre dudit demi-tube (5), tangentiellement audit demi-tube (5) et perpendiculairement à son axe A, afin d'obtenir deux demi-coquilles (7, 7') reliées entre elles par deux barrettes (8, 8'), - une étape repliage des deux demi-coquilles (7, 7') à 90 , l'une contre l'autre, sur le plan de symétrie vertical, comme indiqué par la flèche F, afin de former la paroi sensiblement verticale (2) complète à fond (3). The method according to the invention, illustrated in FIG. 1, is a method of producing a metal fabric filter (1), of the type comprising at least one substantially vertical wall (2), a bottom (3) and at least one plane of vertical symmetry, characterized in that it comprises - a stamping step of a metal fabric (4), to produce a half-tube (5) having an axis A and substantially rounded ends, - a step of said trimming half-tube (5), - a step of producing a slot (6) in the center of said half-tube (5), tangentially to said half-tube (5) and perpendicular to its axis A, to obtain two half shells (7, 7 ') interconnected by two bars (8, 8'), - a folding step of the two half-shells (7, 7 ') to 90, one against the other, on the plane of vertical symmetry, as indicated by the arrow F, to form the substantially vertical wall (2) complete bottom (3).

Le tissu métallique (4) peut se présenter originellement sous la forme rouleau ou d'une plaque. The metal fabric (4) may be originally in the form of a roll or a plate.

Les barrettes (8, 8') consistent en des liaisons formées de quelques fils métalliques. Elles sont obtenues lors de la réalisation de la fente et elles sont venues de matière avec les deux demi-coquilles (7, 7') formant le demi-tube servant ainsi liaison et d'articulation entre les deux demi-coquilles (7, 7'). Elles permettent donc de ne manipuler qu'une seule pièce, le demi-tube (5), lors de la mise en forme du filtre (1). The bars (8, 8 ') consist of bonds formed of a few metal wires. They are obtained during the production of the slot and they are integral with the two half-shells (7, 7 ') forming the half-tube thus serving as a link and articulation between the two half-shells (7, 7). '). They therefore allow to handle only one part, the half-tube (5), during the shaping of the filter (1).

Dans une version préférée de l'invention, les étapes d'emboutissage du tissu métallique (4), de détourage dudit demi-tube (5) obtenu et de réalisation de la fente (6) sont opérées simultanément, à l'aide d'un outil unique, afin de permettre de réaliser ledit filtre (1) plus rapidement et pour un coût moindre. In a preferred version of the invention, the steps of stamping the metal fabric (4), of cutting said half-tube (5) obtained and of producing the slot (6) are operated simultaneously, with the aid of a single tool, to allow to achieve said filter (1) faster and for less cost.

Pour parfaire la réalisation du filtre (1), le procédé selon l'invention peut outre comporter une étape de soudure du plan de joint (9) des deux demi coquilles (7, 7') formant ladite paroi sensiblement verticale (2) à fond (3). To complete the realization of the filter (1), the method according to the invention may further include a step of welding the joint plane (9) of the two half-shells (7, 7 ') forming said substantially vertical wall (2) bottom (3).

Le procédé selon l'invention peut également comporter, à la place de l'étape de soudure du plan de joint (9) ou en complément de cette étape, une étape de surmoulage, au moins, du plan de joint (9) des deux demi-coquilles (7, 7') formant ladite paroi sensiblement verticale (2) à fond (3), à l'aide, par exemple, de matière plastique. The method according to the invention may also comprise, in place of the welding step of the joint plane (9) or in addition to this step, a step of overmoulding, at least, the joint plane (9) of the two half-shells (7, 7 ') forming said substantially vertical wall (2) with bottom (3), for example using plastic.

Avantageusement, le surmoulage du plan de joint (9) permet de le noyer complètement dans matière de surmoulage et augmente ainsi la résistance mécanique du filtre Cette étape surmoulage du plan de joint (9) peut en outre être complétée par une étape de surmoulage du bord supérieure (10) de ladite paroi sensiblement verticale (2) ainsi pourtour extérieur du fond (3), afin d'augmenter encore la résistance mécanique filtre (1). Advantageously, the overmoulding of the joint plane (9) allows it to be drowned completely in overmolding material and thus increases the mechanical strength of the filter. This overmoulding step of the joint plane (9) can also be completed by a step of overmolding the edge. upper (10) of said substantially vertical wall (2) and outer periphery of the bottom (3), to further increase the filter strength (1).

La présente invention se rapporte également aux filtres (1) en tissu métallique, du type comportant une paroi sensiblement verticale (2), un fond (3) et un plan de symétrie, réalisés par la mise en oeuvre du procédé selon l'invention. The present invention also relates to the filters (1) of metal fabric, of the type comprising a substantially vertical wall (2), a bottom (3) and a plane of symmetry, made by the implementation of the method according to the invention.

II est important noter que la forme de la paroi sensiblement verticale (2) peut changer sans sorte pour cela du cadre de l'invention. II est tout à fait possible d'imaginer, exemple, que cette paroi ne soit pas exactement cylindrique et comporte facettes.It is important to note that the shape of the substantially vertical wall (2) can change without thereby departing from the scope of the invention. It is quite possible to imagine, for example, that this wall is not exactly cylindrical and has facets.

Claims (1)

<B>REVENDICATIONS</B> 1- Procédé de réalisation d'un filtre (1) à plan de symétrie vertical en tissu métallique, type comportant au moins une paroi sensiblement verticale (2), un fond (3), caractérisé en ce qu'il comporte - une étape d'emboutissage d'un tissu métallique (4), afin de réaliser un demi- tube (5) comportant un axe A et des bouts sensiblement arrondis, - une étape détourage dudit demi-tube (5), - une étape de réalisation d'une fente (6) au centre dudit demi-tube (5), tangentiellement audit demi-tube (5) et perpendiculairement à son axe A, afin d'obtenir deux demi-coquilles (7, 7') reliées entre elles par deux barrettes (8, 8'), et - une étape de repliage des deux demi-coquilles (7, 7') à 90 , l'une contre l'autre, sur le plan de symétrie vertical, afin de former la paroi sensiblement verticale (2) complète à fond (3). 2- Procédé de réalisation d'un filtre (1) selon la revendication 1, caractérisé ce que les étapes d'emboutissage du tissu métallique (4), de détourage dudit demi tube (5) obtenu et de réalisation de la fente (6) sont opérées simultanément. 3- Procédé de réalisation d'un filtre (1) selon la revendication 1 ou revendication 2, caractérisé en ce qu'il comporte en outre une étape de soudure plan de joint des deux demi-coquilles (7, 7') formant ladite paroi sensiblement verticale (2) ' fond (3). 4- Procedé de réalisation d'un filtre (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il comporte en outre une étape surmoulage, au moins, du plan de joint (9) des deux demi-coquilles (7, 7') formant ladite paroi sensiblement verticale (2) à fond (3). 5- Procedé de réalisation d'un filtre (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte en outre une étape de surmoulage du bord supérieure (10) de ladite paroi sensiblement verticale (2). 6- Procédé de réalisation d'un filtre (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comporte en outre une étape de surmoulage du pourtour extérieur du fond (3). 7- Filtre en tissu métallique, du type comportant une paroi sensiblement verticale (2), fond (3) et au moins un plan de symétrie vertical, réalisé par la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 6.A process for producing a filter (1) with a vertical plane of symmetry made of metal fabric, a type comprising at least one substantially vertical wall (2), a bottom (3), characterized in that it comprises - a step of stamping a metal fabric (4), in order to produce a half-tube (5) comprising an axis A and substantially rounded ends, - a step of cutting said half-tube (5) a step of producing a slot (6) in the center of said half-tube (5), tangentially to said half-tube (5) and perpendicular to its axis A, in order to obtain two half-shells (7, 7 ') interconnected by two bars (8, 8'), and - a step of folding the two half-shells (7, 7 ') to 90, one against the other, on the vertical plane of symmetry, to form the substantially vertical wall (2) complete bottom (3). 2- A method of producing a filter (1) according to claim 1, characterized in that the steps of stamping the metal fabric (4), of cutting said half tube (5) obtained and making the slot (6). are operated simultaneously. 3- A method of producing a filter (1) according to claim 1 or claim 2, characterized in that it further comprises a joint plane welding step of the two half-shells (7, 7 ') forming said wall substantially vertical (2) 'bottom (3). 4- Process for producing a filter (1) according to any one of claims 1 to 3, characterized in that it further comprises a step overmolding, at least, the joint plane (9) of the two halves shells (7, 7 ') forming said substantially vertical wall (2) bottom (3). 5- method for producing a filter (1) according to any one of claims 1 to 4, characterized in that it further comprises a overmolding step of the upper edge (10) of said substantially vertical wall (2) . 6. A method of producing a filter (1) according to any one of claims 1 to 5, characterized in that it further comprises a molding step outer periphery of the bottom (3). 7- metal fabric filter, of the type comprising a substantially vertical wall (2), bottom (3) and at least one vertical plane of symmetry, produced by the implementation of the method according to any one of claims 1 to 6.
FR9913476A 1999-10-25 1999-10-25 METHOD FOR PRODUCING A FILTER WITH A VERTICAL METAL FABRIC SYMMETRY PLAN AND FILTER PERFORMED BY IMPLEMENTING THE METHOD Expired - Fee Related FR2799985B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9913476A FR2799985B1 (en) 1999-10-25 1999-10-25 METHOD FOR PRODUCING A FILTER WITH A VERTICAL METAL FABRIC SYMMETRY PLAN AND FILTER PERFORMED BY IMPLEMENTING THE METHOD

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Application Number Priority Date Filing Date Title
FR9913476A FR2799985B1 (en) 1999-10-25 1999-10-25 METHOD FOR PRODUCING A FILTER WITH A VERTICAL METAL FABRIC SYMMETRY PLAN AND FILTER PERFORMED BY IMPLEMENTING THE METHOD

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FR2799985A1 true FR2799985A1 (en) 2001-04-27
FR2799985B1 FR2799985B1 (en) 2001-11-23

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB741918A (en) * 1951-11-19
DE2721611A1 (en) * 1977-05-13 1978-11-16 Volkswagenwerk Ag Fuel suction line strainer - made of one plastic moulding with hinge strip for two halves
US4545833A (en) * 1984-03-08 1985-10-08 Tafara Peter T Method of making a filter bag assembly
JPH0880540A (en) * 1994-09-13 1996-03-26 Dainippon Printing Co Ltd Plastic molding
US5520802A (en) * 1995-02-08 1996-05-28 Brubaker; Robert L. In-tank fuel filter for a lawnmower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB741918A (en) * 1951-11-19
DE2721611A1 (en) * 1977-05-13 1978-11-16 Volkswagenwerk Ag Fuel suction line strainer - made of one plastic moulding with hinge strip for two halves
US4545833A (en) * 1984-03-08 1985-10-08 Tafara Peter T Method of making a filter bag assembly
JPH0880540A (en) * 1994-09-13 1996-03-26 Dainippon Printing Co Ltd Plastic molding
US5520802A (en) * 1995-02-08 1996-05-28 Brubaker; Robert L. In-tank fuel filter for a lawnmower

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *

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