FR2483983A1 - Corrugated backing for reflector - has aluminium strip of specified thickness passed through forming rollers - Google Patents
Corrugated backing for reflector - has aluminium strip of specified thickness passed through forming rollers Download PDFInfo
- Publication number
- FR2483983A1 FR2483983A1 FR8012858A FR8012858A FR2483983A1 FR 2483983 A1 FR2483983 A1 FR 2483983A1 FR 8012858 A FR8012858 A FR 8012858A FR 8012858 A FR8012858 A FR 8012858A FR 2483983 A1 FR2483983 A1 FR 2483983A1
- Authority
- FR
- France
- Prior art keywords
- smooth
- louver
- strip
- series
- sections
- 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.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000004411 aluminium Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 2
- 238000003491 array Methods 0.000 abstract 2
- 238000002048 anodisation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/34—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles
- E04B9/345—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles consisting of non-parallel slats, e.g. grids
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Grates (AREA)
Abstract
Description
La presente invention se rapporte aux profilés stries, notamment en aluminium arlodisé, pouvant servir en particulier d'éléments constitutifs de faux-plafonds et appareils d'éclairage (grilles basse luminance). The present invention relates to striped profiles, in particular made of aluminum which can be used in particular as constituent elements of false ceilings and lighting fixtures (low luminance grids).
Ces éléments, sous forme de bande, dénommés ventelles, sont striés de manière à contrecarrer le phénomène d'irisation de la lumière qui, sinon, se produirait, surtout avec les nouveaux tubes d'éclairage à haut rendement (efficacite pouvant atteindre 92 lumen /Watt et dépassant couramment 78 lumen /Watt). These elements, in the form of a strip, called louvers, are striated so as to counteract the phenomenon of iridescence of light which would otherwise occur, especially with the new high-efficiency lighting tubes (efficiency up to 92 lumen / Watt and commonly exceeding 78 lumen / Watt).
Les ventelles sont obtenues jusqu'ici par filage. Pour éviter les angles vifs dans les filières réplique des angles vifs des profilés et cause de fragilité de celles-ci, on donne au profilé une section droite dite "en sapins'. En outre, comme les difficultés de réglage des filières et de dressage des profilés augmentent rapidement lorsque les épaisseurs diminuent, ltépaisseu: minimale d'une ventelle striée en aluminium, obtenue par filage, est de 1,3 mm. The louvers are obtained so far by spinning. To avoid sharp angles in the dies replicates sharp angles of the profiles and cause of their fragility, the profile is given a straight section called "pine". In addition, like the difficulties of adjusting the dies and dressing the profiles increase rapidly when the thicknesses decrease, the thickness: minimum of a striated aluminum louver, obtained by spinning, is 1.3 mm.
On a maintenant trouvé un procédé pour fabriquer une ventelle striée qui permet de s'écarter de la forme "en sapin" et, surtout, qui permet d'obtenir une ventelle striée, résistant mécaniquement mais moins épaisse. Le gain sur le métal est considérable. We have now found a process for manufacturing a ridged louver which makes it possible to deviate from the "fir" shape and, above all, which makes it possible to obtain a ribbed louver, mechanically resistant but less thick. The gain on metal is considerable.
L'invention a donc pour objet un procédé de fabrication d'une ventelle striée en aluminium anodisé, caractérisé en ce qu'il consiste à fabriquer un feuillard lisse en aluminium anodisé, puis a déformer ce feuillard lisse à l'aide d'un outil de striage. The subject of the invention is therefore a method of manufacturing a striated louver in anodized aluminum, characterized in that it consists in manufacturing a smooth strip in anodized aluminum, then in deforming this smooth strip using a tool of streaking.
Suivant une variante, le procédé consiste à presser un tronçon de feuillard en aluminium anodisé entre deux mors de striage. According to a variant, the method consists in pressing a strip of anodized aluminum strip between two jaws of striating.
D'une manière surprenante, on a trouvé que ce procédé par déformation du métal à l'état solide permet d'obtenir de bons résultats, alors que l'on devait craindre des ruptures et défauts dans le profilé obtenu, surtout dans la couche de protection très mince, obtenue par anodisation. Or, l'expérience révèle que cette couche se déforme sans perdre sa continuité. Surprisingly, it has been found that this process by deformation of the metal in the solid state makes it possible to obtain good results, whereas it was to be feared ruptures and defects in the profile obtained, especially in the layer of very thin protection, obtained by anodization. However, experience shows that this layer deforms without losing its continuity.
L'invention permet ainsi d'obtenir une ventelle striée, en aluminium anodisé ayant une épaisseur maximale inférieure à 1,2 mm., ce qui n' avait jamais pu être obtenu jusqu'ici, et notamment une épaisseur comprise entre 0,3 et 0,8 mm. The invention thus makes it possible to obtain a striated louver, of anodized aluminum having a maximum thickness of less than 1.2 mm., Which has never been possible until now, and in particular a thickness of between 0.3 and 0.8 mm.
Dans la variante du procédé de fabrication par mors de striage, on opère pas a pas et on obtient une ventelle qui, à intervalles réguliers, n'est pas striée sur des tronçons régulièrement répartis, tronçons lisses qui facilitent ensuite l'assemblage des ventelles en une résille, par exemple pour constituer un faux-plafond ou une cloison constituée de deux séries de ventelles entrecroisées, assemblées grâce à des entailles qui s'ouvrent respectivement sur les bords supérieurs et inférieurs des tronçons lisses des ventelles suivant les séries, et qui sont destinées à la réception à force des tronçons lisses de l'autre série. In the variant of the method of manufacturing by sorting jaws, one operates step by step and one obtains a louver which, at regular intervals, is not striated on regularly distributed sections, smooth sections which then facilitate the assembly of the louvers in a mesh, for example to constitute a false ceiling or a partition made up of two series of crisscrossed louvers, assembled by notches which open respectively on the upper and lower edges of the smooth sections of the louvers according to the series, and which are intended for the reception by force of the smooth sections of the other series.
On peut augmenter l'efficacité lumineuse de l'ensemble de la résille et du tube fluorescent en disposant lesstries d'une manière particulière. The luminous efficacy of the whole of the mesh and the fluorescent tube can be increased by arranging the streaks in a particular way.
La ventelle striée suivant l'invention se caractérise en ce que les intervalles entre plusieurs stries consécutives vont croissant. The striated louver according to the invention is characterized in that the intervals between several consecutive striations are increasing.
En général, les stries sont parallèles et les intervalles entre les stries consécutives vont croissant d'un bord du profilé à l'autre. In general, the streaks are parallel and the intervals between consecutive streaks increase from one edge of the profile to the other.
Aux dessins annexés, donnés uniquement à titre d'exemple:
La figure 1 est un schéma en perspective illustrant le procédé de fabrication suivant l'invention.In the accompanying drawings, given solely by way of example:
Figure 1 is a perspective diagram illustrating the manufacturing process according to the invention.
La figure 2 est une vue en plan de la ventelle obtenue par le procédé illustré à la figure 1. FIG. 2 is a plan view of the louver obtained by the method illustrated in FIG. 1.
La figure 3 est une vue en perspective éclatée d'une résille incorporant des ventelles suivant la figure 2; et
La figure 4 est un schéma en perspective illustrant une variante du procédé de fabrication suivant l'invention et
La figure 1A est une vue en coupe du profilé suivant l'invention, tandis que la figure 2A est une vue en perspective d'une résille suivant l'invention.Figure 3 is an exploded perspective view of a mesh incorporating louvers according to Figure 2; and
FIG. 4 is a perspective diagram illustrating a variant of the manufacturing method according to the invention and
Figure 1A is a sectional view of the profile according to the invention, while Figure 2A is a perspective view of a mesh according to the invention.
A la figure 1, un feuillard 1 lisse en aluminium anodisé, d'une épaisseur uniforme de 0,7 mm est amené, tronçon par tronçon, entre un mors 2 inférieur de striage et un mors 3 supérieur de striage. Après avoir immobilisé le feuillard, on rapproche les deux mors 2 et 3 l'un de l'autre de manière à déformer le tron çon de feuillard qui se trouve entre eux et à y imprimer des stries. Ensuite, on éloigne les mors 2 et 3 l'un de l'autre. On fait venir un nouveau tronçon du feuillard, séparé du tronçon déjà strié par un tronçon lisse, et on répète l'opération de striage sur le nouveau tronçon. In FIG. 1, a smooth strip 1 made of anodized aluminum, of a uniform thickness of 0.7 mm is brought, section by section, between a lower jaw 2 for streaking and an upper jaw 3 for streaking. After immobilizing the strip, the two jaws 2 and 3 are brought closer to each other so as to deform the section of strip which is between them and to make streaks there. Then, the jaws 2 and 3 are moved away from each other. A new section of the strip is brought in, separated from the section already striated by a smooth section, and the stripping operation is repeated on the new section.
On obtient ainsi une ventelle (figure 2) ayant des stries 4 parallèles sur les deux faces et drune épaisseur uniforme de 0,7 mm environ. Les stries ne s'étendent que sur des tron çons 5 séparés, à intervalles réguliers, par des tronçons 6 lisses. A louver (FIG. 2) is thus obtained having parallel ridges 4 on the two faces and a uniform thickness of approximately 0.7 mm. The streaks only extend over sections 5 separated, at regular intervals, by smooth sections 6.
C'est dans ces tronçons 6 lisses que sont ménagées (figure 3) ensuite des entailles 7 d'assemblage permettant d'obtenir une résille de - faux-plafond comprenant deux séries 8, 9 de ventelles entrecroisées, assemblées grâce aux entailles 7 qui s'ouvrent sur les bords supérieurs 10 et inférieurs ll des tronçons 6 lisses suivant les séries 8, 9 et qui reçoivent à force des tronçons 6 lisses de l'autre série. It is in these smooth sections 6 that are provided (FIG. 3) then notches 7 for assembly, making it possible to obtain a network of - false ceilings comprising two series 8, 9 of intersecting louvers, assembled using notches 7 which are 'open on the upper 10 and lower edges ll of the smooth sections 6 according to the series 8, 9 and which forcefully receive the smooth sections 6 of the other series.
Le procédé illustré à la figure 4 consiste à faire passer un feuillard I lisse, en aluminium anodisé, en continu entre deux molettes 12 de striage. The process illustrated in FIG. 4 consists in passing a smooth strip I, made of anodized aluminum, continuously between two scoring wheels 12.
Que l'on utilise des mors 2, 3 ou des molettes 12, on constate à l'expérience que la couche protectrice obtenue par anodisation reste continue, m9me si l'épaisseur du feuillard est inférieure à 1,2 mm. Whether jaws 2, 3 or knurls 12 are used, experience shows that the protective layer obtained by anodization remains continuous, even if the thickness of the strip is less than 1.2 mm.
On peut obtenir des ventelles ayant des tronçons 6 lisses séparant les tronçons 5 striés à l'aide de molettes en prévoyant un dispositif, à cames ou à commande électronique, d'écartement cadence des molettes. De même, on peut obtenir un striage continu à l'aide de mors. Louvers having smooth sections 6 can be obtained separating the striated sections 5 using knobs by providing a device, with cams or with electronic control, for spacing the wheels at a rate. Likewise, continuous streaking can be achieved using jaws.
A la figure 1AS , le profilé est en aluminium anodisé. In Figure 1AS, the profile is made of anodized aluminum.
L'épaisseur en est uniforme. Il comporte du haut vers le bas successivement six stries lî à 16 sur une face et six stries 21 à 26 sur la face opposée. Les stries sont parallèles aux grands côtés du profilé.The thickness is uniform. It has from top to bottom successively six streaks 11 to 16 on one side and six streaks 21 to 26 on the opposite side. The ridges are parallel to the long sides of the profile.
Les distances, décomptées suivant la-verticale, à la figure 1, entre les stries sont, successivement de la strie à la strie 21 de la strie 21 à la strie 12 etc... jusqu'à de la strie 16 à la strie 26, de 2 mm, 2,2 mm, 2,3 mm, 2,4 mm 2,6 mm, 2,8 mm, 3,2 mm, 3,6 mm, 3,8 mm et 4 mm. The distances, counted along the vertical, in Figure 1, between the streaks are, successively from the streak to the streak 21 from the streak 21 to the streak 12 etc ... to from the streak 16 to the streak 26 , 2 mm, 2.2 mm, 2.3 mm, 2.4 mm 2.6 mm, 2.8 mm, 3.2 mm, 3.6 mm, 3.8 mm and 4 mm.
La résille de la figure 2A est constituée de deux séries A et B de profilés ou ventelîee suivant la figure 1 entrecroisés et assemblés grâce à des entailles qui s'ouvrent respectivement sur les bords supérieurs 3 et inférieurs 4 des ventelles suivant les séries et qui sont destinées à la réception des ventelles de l'autre série. Les intervalles entre les stries des ventelles vont croissant des bords supérieurs 3 vers les bords inférieurs 4. The mesh of FIG. 2A is made up of two series A and B of profiles or ventellated according to FIG. 1 intersecting and assembled by means of notches which open respectively on the upper 3 and lower edges 4 of the louvers according to the series and which are intended for the reception of louvers of the other series. The intervals between the streaks of the louvers increase from the upper edges 3 to the lower edges 4.
L'expérience montre que l'efficacité lumineuse d'un tube fluorescent placé dans la résille suivant l'invention est meilleure que celle obtenue en plaçant le même tube dans une résille à stries réparties de manière uniforme. Experience shows that the luminous efficacy of a fluorescent tube placed in the mesh according to the invention is better than that obtained by placing the same tube in a mesh with streaks distributed uniformly.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8012858A FR2483983A1 (en) | 1980-06-10 | 1980-06-10 | Corrugated backing for reflector - has aluminium strip of specified thickness passed through forming rollers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8012858A FR2483983A1 (en) | 1980-06-10 | 1980-06-10 | Corrugated backing for reflector - has aluminium strip of specified thickness passed through forming rollers |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2483983A1 true FR2483983A1 (en) | 1981-12-11 |
Family
ID=9242906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8012858A Pending FR2483983A1 (en) | 1980-06-10 | 1980-06-10 | Corrugated backing for reflector - has aluminium strip of specified thickness passed through forming rollers |
Country Status (1)
Country | Link |
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FR (1) | FR2483983A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR991885A (en) * | 1949-05-21 | 1951-10-11 | Anti-blind device for lighting devices | |
DE834836C (en) * | 1950-07-18 | 1952-03-24 | Ernst Duellmann | Resin light curtain |
FR1016986A (en) * | 1950-05-02 | 1952-11-27 | Anti-blinding device for lighting devices | |
DE2460115A1 (en) * | 1974-12-19 | 1976-09-02 | Trilux Lenze Gmbh & Co Kg | Edgeways crossed ceiling reflectors for strip lights - have stepped reflecting faces of concave shape for preventing glare |
DE2655702A1 (en) * | 1976-12-09 | 1978-06-15 | Trilux Lenze Gmbh & Co Kg | Lighting fitting grid with reflectors and fasteners - has connecting webs and sliding supports of thin sheet metal |
-
1980
- 1980-06-10 FR FR8012858A patent/FR2483983A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR991885A (en) * | 1949-05-21 | 1951-10-11 | Anti-blind device for lighting devices | |
FR1016986A (en) * | 1950-05-02 | 1952-11-27 | Anti-blinding device for lighting devices | |
DE834836C (en) * | 1950-07-18 | 1952-03-24 | Ernst Duellmann | Resin light curtain |
DE2460115A1 (en) * | 1974-12-19 | 1976-09-02 | Trilux Lenze Gmbh & Co Kg | Edgeways crossed ceiling reflectors for strip lights - have stepped reflecting faces of concave shape for preventing glare |
DE2655702A1 (en) * | 1976-12-09 | 1978-06-15 | Trilux Lenze Gmbh & Co Kg | Lighting fitting grid with reflectors and fasteners - has connecting webs and sliding supports of thin sheet metal |
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