EP2883670B1 - Tool for cutting gypsum board - Google Patents

Tool for cutting gypsum board Download PDF

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Publication number
EP2883670B1
EP2883670B1 EP13167512.6A EP13167512A EP2883670B1 EP 2883670 B1 EP2883670 B1 EP 2883670B1 EP 13167512 A EP13167512 A EP 13167512A EP 2883670 B1 EP2883670 B1 EP 2883670B1
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EP
European Patent Office
Prior art keywords
ruler
tool
blade
board
previous
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EP13167512.6A
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German (de)
French (fr)
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EP2883670A1 (en
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Mario Giangreco
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/225—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising for scoring or breaking, e.g. tiles
    • B28D1/226—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising for scoring or breaking, e.g. tiles with plural scoring tools

Definitions

  • the invention relates to the field of cutting plasterboard panels in building work sites.
  • It relates more particularly to an improved device for cutting such a plasterboard.
  • plasterboard In the context of building work sites, plasterboard can be used to make partitions between rooms in the same dwelling. To cut such a plasterboard, it is necessary to make a notch cut on a first face, then a cut line on the opposite face, then we can "break" the plate. The two notches allow to obtain a clear break. When we are satisfied with a cut line on one of the faces, the break is clear only on this face, but is of very poor quality, the more we go towards the opposite face. Application against another plasterboard is then not possible, or creates an undesirable space. To make the two notches, it is necessary to locate precisely the first notch line, and it is not easy to locate the place on the other side on which it is necessary to practice the second line of notch. It is therefore a tedious work of measurement and calculation, with a risk of significant error.
  • Circular or jumper saws exist, which can saw a sheet of plaster from one side to the other; nevertheless these are powered tools, and therefore expensive and requiring a power supply; moreover, the quality of the cut on the opposite face is often not very good either.
  • the present invention proposes to overcome at least some of the aforementioned drawbacks and proposes a solution that allows with a single tool, to obtain in a single operation two notches, allowing a clean cut of a plasterboard.
  • the invention relates to a tool according to claim 1.
  • the tool allows an operator to easily make two notches on either side of a panel, and to the right of each other, which then allows him to "breakā€ cleanly. panel along these cuts, getting a clean break.
  • the tracing of the notch needs only to be done on one side of the panel, the tool makes sure that there will be a second cut under the panel at the same place automatically.
  • the advantage of the present invention lies in particular in that the tool according to the invention allows an operator to very easily realize a clean and straight cut of a panel, in particular a plasterboard.
  • the tool is lightweight, easy to handle alone, is inexpensive and works without any energy source.
  • the present invention relates to a tool 1 for cutting a panel 2, in particular a plasterboard.
  • the tool 1 comprises an upper rule 3 and a lower rule 5 disposed in line with one another.
  • these upper 3 and lower 5 rules are intended to be arranged one above, the other below the panel 2 to be cut.
  • Each rule is provided with a blade carriage 10, respectively carrying an upper blade 4 and a lower blade 6.
  • the carriage is movable in translation on its ruler, in a linear manner throughout the rule.
  • a motion transmission device 7 ensures the link between the movement of the two slide carriage.
  • this device comprises at least one cable 8 which wraps around pulleys 9.
  • this device can also be used on a vertical panel 2, as the skilled person understands it without any difficulty.
  • the cable 8 extends horizontally from the carriage 10 of the upper ruler 3, and goes towards one end of the upper ruler 3 where it is wound on a pulley 9, descends vertically towards another pulley 9, then returns horizontally to the carriage 10 of the lower ruler 5.
  • a second cable 8 similarly connects the carriage 10 of the lower rule 5 to the carriage 10 of the upper rule 3 through the other end of the rules 3, 5.
  • This embodiment allows the tool 1, which may have a length of 2 meters, or 2.5 meters, to make notches, for example three millimeters in depth, on either side of a panel 2, whose thickness can vary between 10 and 20 mm, over the entire width or length of a panel 2 (see Fig. 1 ). Once these cuts are made, the operator can "break" the panel 2 along the notches, obtaining a very clean break thanks to the two notches on both sides of the panel 2.
  • a spring 11 is disposed between the cable 8 and the carriage 10, in particular to absorb the spacing adjustments between the rules, to which we will come back a little further, while ensuring a constant tension of the cable 8.
  • a cable guide 16 is arranged, making it possible to prevent the tension of the cable 8 from tending to bring the ends of the upper and lower rules 5 closer together.
  • the tool 1 may comprise a second circuit of two cables 8 and pulleys 9 having the same link function between the two carriages, as illustrated in FIG. Fig. 4 .
  • the cable 8 extends horizontally from the carriage 10 of the upper ruler 3, and goes towards one end of the upper ruler 3 where it winds on a pulley 9, shifts horizontally towards an offset pulley 18, then returns horizontally to the other end of the upper ruler 3, wraps around a shifted pulley 18, then descends obliquely to a pulley 9 of the lower ruler 5 and finally goes horizontally to the carriage 10 of the lower ruler 5.
  • a second cable 8 similarly connects the carriage 10 of the lower rule 5 to the carriage 10 of the upper rule 3 through the lower rule 5 and shifted pulleys 18 of the lower rule 5, and in a similar circuit.
  • This embodiment allows the tool 1 to make cuts on either side of a panel 2, over part of the width or length of a panel 2 (see FIG. Fig. 4 ).
  • This tool 1 for example of length about 1.5 meters, thus allows in particular to cut a rectangle in a panel 2, without having to cut the panel 2 over its entire width and its entire length.
  • a graduated ruler 17 disposed on the top of the lower ruler 5 makes it possible to precisely position the tool 1 on the panel 2 according to the length of the desired pair of notches.
  • a spring 11 is disposed between the cable 8 and the carriage 10, in particular to absorb the spacing adjustments between the rules, to which we will come back a little further, while ensuring a constant tension of the cable 8.
  • a cable guide 16 is arranged, making it possible to prevent the tension of the cable 8 from tending to bring the ends of the upper and lower rules 5 closer together.
  • the tool 1 may comprise a second circuit of two cables 8 and pulleys 9 having the same link function between the two carriages, not shown in FIG. Fig. 4 . to ensure a good guiding of the blade carriage 10 of the lower rule 5.
  • the tool 1 may further comprise a handle 12 connected to the blade carriage 10 of the upper ruler 3, and allowing an operator to perform the translational movement to the upper blade 4 along the top rule 3.
  • the tool 1 may comprise adjustment means, for example by an adjusting wheel 13 and a compression spring 14, as well as a slideway up 21; a gear 22 ensures the coupling between the adjusting wheel 13 and the rising slide 21, in particular in the open version ( Fig. 5 ) where it is necessary to ensure the separation of the upper rules 3 and lower 5 cantilever.
  • the tool 1 may further comprise a clamping lever 15 movable in rotation about a clamping position of the panel 2, and an open position.
  • This lever being placed in the clamping position, acts on a valve 19, resiliently biased by a return spring 20.
  • a valve 19 resiliently biased by a return spring 20.
  • the translational movement of the slide carriage 10 can be motorized, for example by a small electric motor, thus making the cutting operation easier for the operator. This nevertheless requires to equip the tool 1 with a battery, or else a cable to connect to the mains.
  • the tool 1 can be foldable for easy transport. This is all the more appreciable when the tool 1 exceeds a length of two meters. When it is folded in half, the length then exceeds barely one meter.
  • a device is provided so that the cables 8 are held during folding, and are correctly placed back on the pulleys 9 and 18 unfolding, making the tool 1 directly operational.
  • the tool 1 may comprise, in addition to a graduated rule 17, an integrated roll meter, for measuring the dimension to be cut in the direction perpendicular to the tool 1.
  • the tool 1 can be adapted to cut plasterboard 2 coated with glass wool, for example a 13 mm thick plate, coated with glass wool or polystyrene 5 to 10 cm thick.
  • the upper blade 4 is then longer, to pass through all the glass wool or polystyrene, and make a notch in the plasterboard 2.
  • the separation of the upper rules 3 and lower 5 is adapted accordingly.
  • the advantage of the present invention lies in particular in that the tool 1 allows an operator to very easily realize a clean and straight cut of a panel 2, in particular a plasterboard.
  • the tool 1 is lightweight, easy to handle alone, it is inexpensive and works without energy source.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Description

L'invention concerne le domaine de la dĆ©coupe de panneaux de plaques de plĆ¢tre dans les chantiers de travaux intĆ©rieurs de bĆ¢timents.The invention relates to the field of cutting plasterboard panels in building work sites.

Elle concerne plus particuliĆØrement un dispositif amĆ©liorĆ© de dĆ©coupe d'une telle plaque de plĆ¢tre.It relates more particularly to an improved device for cutting such a plasterboard.

Dans le cadre des chantiers de travaux intĆ©rieurs de bĆ¢timents, les plaques de plĆ¢tre peuvent ĆŖtre utilisĆ©es pour rĆ©aliser des cloisons entre piĆØces d'un mĆŖme logement. Pour dĆ©couper une telle plaque de plĆ¢tre, il faut faire un trait d'entaille sur une premiĆØre face, puis un trait d'entaille sur la face opposĆ©e, puis on peut Ā« casser Ā» la plaque. Les deux traits d'entaille permettent d'obtenir une cassure nette. Quand on se contente d'un trait d'entaille sur une des faces, la cassure n'est nette que sur cette face, mais est de trĆØs mauvaise qualitĆ©, plus on va vers la face opposĆ©e. L'application contre une autre plaque de plĆ¢tre n'est alors pas possible, ou crĆ©e un espace non souhaitable. Pour effectuer les deux traits d'entaille, il faut repĆ©rer prĆ©cisĆ©ment le premier trait d'entaille, et il n'est pas simple de repĆ©rer le lieu sur l'autre face sur lequel il faut pratiquer le deuxiĆØme trait d'entaille. C'est donc un travail fastidieux de mesures et de calcule, avec un risque d'erreur non nĆ©gligeable.In the context of building work sites, plasterboard can be used to make partitions between rooms in the same dwelling. To cut such a plasterboard, it is necessary to make a notch cut on a first face, then a cut line on the opposite face, then we can "break" the plate. The two notches allow to obtain a clear break. When we are satisfied with a cut line on one of the faces, the break is clear only on this face, but is of very poor quality, the more we go towards the opposite face. Application against another plasterboard is then not possible, or creates an undesirable space. To make the two notches, it is necessary to locate precisely the first notch line, and it is not easy to locate the place on the other side on which it is necessary to practice the second line of notch. It is therefore a tedious work of measurement and calculation, with a risk of significant error.

Il existe bien des scies circulaires ou sauteuses, qui peuvent scier une plaque de plĆ¢tre de part en part ; nĆ©anmoins il s'agit lĆ  d'outils motorisĆ©s, et donc chers et nĆ©cessitant une alimentation Ć©lectrique ; de plus, la qualitĆ© de la dĆ©coupe sur la face opposĆ©e n'est souvent pas trĆØs bonne non plus.Circular or jumper saws exist, which can saw a sheet of plaster from one side to the other; nevertheless these are powered tools, and therefore expensive and requiring a power supply; moreover, the quality of the cut on the opposite face is often not very good either.

Le document US 2 378 428 A divulgue un outil selon le prƩambule de la revendication 1.The document US 2,378,428 A discloses a tool according to the preamble of claim 1.

La prĆ©sente invention se propose de remĆ©dier Ć  au moins une partie des inconvĆ©nients prĆ©citĆ©s et propose une solution qui permette avec un outil simple, d'obtenir en une seule opĆ©ration deux traits d'entaille, permettant une dĆ©coupe propre d'une plaque de plĆ¢tre.The present invention proposes to overcome at least some of the aforementioned drawbacks and proposes a solution that allows with a single tool, to obtain in a single operation two notches, allowing a clean cut of a plasterboard.

A cet effet, l'invention concerne un outil selon la revendication 1.For this purpose, the invention relates to a tool according to claim 1.

GrĆ¢ce Ć  ces dispositions, l'outil permet Ć  un opĆ©rateur de rĆ©aliser facilement deux entailles de part et d'autre d'un panneau, et au droit l'une de l'autre, ce qui lui permet ensuite de Ā« casser Ā» proprement le panneau le long de ces entailles, en obtenant une rupture propre. Le tracĆ© de l'entaille n'a besoin que d'ĆŖtre fait sur une face du panneau, l'outil fait en sorte qu'il y aura automatiquement une deuxiĆØme entaille sous le panneau au mĆŖme endroit.Thanks to these provisions, the tool allows an operator to easily make two notches on either side of a panel, and to the right of each other, which then allows him to "break" cleanly. panel along these cuts, getting a clean break. The tracing of the notch needs only to be done on one side of the panel, the tool makes sure that there will be a second cut under the panel at the same place automatically.

Selon d'autres caractƩristiques :

  • ledit cĆ¢ble peut comprendre deux parties disposĆ©es le long de la rĆØgle supĆ©rieure d'une part et le long de la rĆØgle infĆ©rieure d'autre part et deux parties reliant la rĆØgle supĆ©rieure Ć  la rĆØgle infĆ©rieure ces deux parties Ć©tant disposĆ©es chacune Ć  l'une des extrĆ©mitĆ©s de l'outil, de sorte que quand la lame supĆ©rieure effectue une translation, la lame infĆ©rieure effectue une translation en sens contraire ; une telle disposition permet d'avoir un maintien des rĆØgles supĆ©rieure et infĆ©rieure Ć  chaque extrĆ©mitĆ© desdites rĆØgles, ce qui Ć©vite le porte Ć  faux,
  • ledit cĆ¢ble peut comprendre deux parties disposĆ©es le long de la rĆØgle supĆ©rieure d'une part et le long de la rĆØgle infĆ©rieure d'autre part et deux parties reliant la rĆØgle supĆ©rieure Ć  la rĆØgle infĆ©rieure ces deux parties Ć©tant disposĆ©es du cĆ“tĆ© d'une mĆŖme extrĆ©mitĆ© de l'outil, de sorte que quand la lame supĆ©rieure effectue une translation, la lame infĆ©rieure effectue une translation dans le mĆŖme sens ; une telle disposition permet de rĆ©aliser des encoches partant d'une extrĆ©mitĆ© d'un panneau, sans aller jusqu'Ć  l'autre extrĆ©mitĆ© ; il permet donc de faire des dĆ©coupes sur une partie de la largeur ou de la longueur d'un panneau,
  • chaque lame peut ĆŖtre disposĆ©e sur un chariot porte-lame, et le dispositif de transmission de mouvement comporter deux cĆ¢bles reliant la lame infĆ©rieure Ć  la lame supĆ©rieure par l'intermĆ©diaire desdits chariots porte-lames, de sorte Ć  amĆ©liorer la rĆ©partition des efforts, et des organes de renvoi desdits cĆ¢bles ; une telle disposition permet d'Ć©viter les risques de coincement de la lame, et garantit un bon guidage desdites lames,
  • ledit outil peut comprendre un Ć©lĆ©ment Ć©lastique, de prĆ©fĆ©rence un ressort, disposĆ© entre le cĆ¢ble et chacune des lames supĆ©rieure et infĆ©rieure ; cela permet d'absorber les diffĆ©rences de longueurs pouvant apparaĆ®tre, selon les rĆ©glages, les tempĆ©ratures, ou d'autres paramĆØtres,
  • ladite lame supĆ©rieure peut ĆŖtre solidaire d'une poignĆ©e disposĆ©e sur la rĆØgle supĆ©rieure de faƧon accessible Ć  la main d'un opĆ©rateur, permettant ainsi une manipulation aisĆ©e de l'outil par un opĆ©rateur,
  • ledit outil peut comprendre un moyen de rĆ©glage de l'Ć©cartement entre les rĆØgles supĆ©rieure et infĆ©rieure, permettant ainsi de dĆ©couper des panneaux d'Ć©paisseur diffĆ©rentes,
  • ledit moyen de rĆ©glage peut comporter une molette de rĆ©glage et un ressort de compression, ce qui reprĆ©sente une solution simple et rustique,
  • ledit outil peut comprendre une manette de maintien mobile entre une position libre et une position de maintien, configurĆ©e pour qu'en prĆ©sence d'un panneau, ledit panneau soit immobilisĆ© par rapport Ć  l'outil en position de maintien, et libre par rapport Ć  l'outil en position libre ; une telle disposition permet de bloquer l'outil sur le panneau dĆØs que sa position est bonne, puis d'effectuer les encoches sans se soucier de la position de l'outil par rapport au panneau.
According to other characteristics:
  • said cable may comprise two parts arranged along the upper ruler on the one hand and along the lower ruler on the other hand and two parts connecting the upper ruler to the lower ruler, these two parts being each disposed at one of the ends of the tool, so that when the upper blade performs a translation, the lower blade performs a translation in the opposite direction; such an arrangement makes it possible to maintain the upper and lower rules at each end of said rules, which avoids the overhang,
  • said cable may comprise two parts arranged along the upper ruler on the one hand and along the lower ruler on the other hand and two parts connecting the upper ruler to the lower ruler, these two parts being arranged on the side of the same end of the tool, so that when the upper blade performs a translation, the lower blade performs a translation in the same direction; such an arrangement allows to make notches from one end of a panel, without going to the other end; it thus makes it possible to make cuts on a part of the width or the length of a panel,
  • each blade can be arranged on a slide carriage, and the motion transmission device comprises two cables connecting the lower blade to the upper blade via said slide carriage, so as to improve the distribution of forces, and the return members of said cables; such an arrangement avoids the risk of jamming of the blade, and ensures proper guiding said blades,
  • said tool may comprise an elastic member, preferably a spring, disposed between the cable and each of the upper and lower blades; this makes it possible to absorb the differences of lengths which can appear, according to the settings, the temperatures, or other parameters,
  • said upper blade can be secured to a handle disposed on the upper ruler in a manner accessible to the hand of an operator, thus allowing easy manipulation of the tool by an operator,
  • said tool may comprise a means for adjusting the spacing between the upper and lower rules, thus making it possible to cut panels of different thickness,
  • said adjusting means may comprise an adjusting wheel and a compression spring, which represents a simple and rustic solution,
  • said tool may comprise a holding lever movable between a free position and a holding position, configured so that in the presence of a panel, said panel is immobilized with respect to the tool in the holding position, and free with respect to the tool in free position; such an arrangement makes it possible to block the tool on the panel as soon as its position is good, then to make the notches without worrying about the position of the tool relative to the panel.

L'avantage de la prĆ©sente invention rĆ©side en particulier en ce que l'outil selon l'invention permet Ć  un opĆ©rateur de rĆ©aliser trĆØs facilement une dĆ©coupe droite et propre d'un panneau, en particulier d'une plaque de plĆ¢tre. L'outil est lĆ©ger, facile Ć  manier seul, il est peu onĆ©reux et fonctionne sans source d'Ć©nergie.The advantage of the present invention lies in particular in that the tool according to the invention allows an operator to very easily realize a clean and straight cut of a panel, in particular a plasterboard. The tool is lightweight, easy to handle alone, is inexpensive and works without any energy source.

D'autres caractƩristiques et avantages de l'invention ressortiront de la description dƩtaillƩe qui va suivre se rapportant Ơ un exemple de rƩalisation donnƩ Ơ titre indicatif et non limitatif.Other features and advantages of the invention will emerge from the following detailed description relating to an exemplary embodiment given by way of indication and not limitation.

La comprƩhension de cette description sera facilitƩe en se rƩfƩrant aux dessins joints, dans lesquels :

  • la figure 1 reprĆ©sente une vue en perspective d'un outil selon un premier mode de rĆ©alisation de l'invention ;
  • la figure 2 reprĆ©sente une coupe longitudinale de l'outil de la fig. 1 ;
  • la figure 3 reprĆ©sente une coupe transversale de l'outil de la fig. 1 ;
  • la figure 4 reprĆ©sente une vue schĆ©matique du principe de fonctionnement de l'outil de la fig. 1 ;
  • la figure 5 reprĆ©sente une vue en perspective d'un outil selon un deuxiĆØme mode de rĆ©alisation de l'invention ;
  • la figure 6 reprĆ©sente une coupe longitudinale de l'outil de la fig. 5 ;
  • la figure 7 reprĆ©sente une coupe transversale de l'outil de la fig. 5 ;
  • la figure 8 reprĆ©sente une vue schĆ©matique du principe de fonctionnement de l'outil de la fig. 5.
The understanding of this description will be facilitated with reference to the accompanying drawings, in which:
  • the figure 1 is a perspective view of a tool according to a first embodiment of the invention;
  • the figure 2 represents a longitudinal section of the tool of the Fig. 1 ;
  • the figure 3 represents a cross-section of the tool of the Fig. 1 ;
  • the figure 4 represents a schematic view of the operating principle of the tool of the Fig. 1 ;
  • the figure 5 is a perspective view of a tool according to a second embodiment of the invention;
  • the figure 6 represents a longitudinal section of the tool of the Fig. 5 ;
  • the figure 7 represents a cross-section of the tool of the Fig. 5 ;
  • the figure 8 represents a schematic view of the operating principle of the tool of the Fig. 5 .

Tel que reprĆ©sentĆ© dans les figures 1 Ć  8 du dessin ci-joint, la prĆ©sente invention concerne un outil 1 de dĆ©coupe d'un panneau 2, en particulier d'une plaque de plĆ¢tre. L'outil 1 comprend une rĆØgle supĆ©rieure 3 et une rĆØgle infĆ©rieure 5 disposĆ©es au droit d'une de l'autre. Comme on le voit Ć  la fig. 1, ces rĆØgles supĆ©rieure 3 et infĆ©rieure 5 sont destinĆ©es Ć  ĆŖtre disposĆ©es l'une au-dessus, l'autre au-dessous du panneau 2 Ć  dĆ©couper. Chaque rĆØgle est munie d'un chariot porte-lame 10, portant respectivement une lame supĆ©rieure 4 et une lame infĆ©rieure 6. Le chariot est mobile en translation sur sa rĆØgle, d'une faƧon linĆ©aire tout au long de la rĆØgle.As shown in the Figures 1 to 8 of the accompanying drawing, the present invention relates to a tool 1 for cutting a panel 2, in particular a plasterboard. The tool 1 comprises an upper rule 3 and a lower rule 5 disposed in line with one another. As we see in Fig. 1 these upper 3 and lower 5 rules are intended to be arranged one above, the other below the panel 2 to be cut. Each rule is provided with a blade carriage 10, respectively carrying an upper blade 4 and a lower blade 6. The carriage is movable in translation on its ruler, in a linear manner throughout the rule.

Un dispositif de transmission de mouvement 7 assure le lien entre le mouvement des deux chariots porte lame. Selon le mode de rĆ©alisation reprĆ©sentĆ©, ce dispositif comprend au moins un cĆ¢ble 8 qui s'enroule autour de poulies 9. Pour la facilitĆ© de l'exposĆ© on parlera ci-aprĆØs d'horizontale pour ce qui est parallĆØle Ć  la rĆØgle, et vertical pour ce qui est perpendiculaire Ć  la rĆØgle en allant d'une rĆØgle Ć  l'autre, comme si le dispositif Ć©tait en place sur un panneau 2 posĆ© Ć  l'horizontale. Il est bien entendu que le dispositif peut aussi ĆŖtre utilisĆ© sur un panneau 2 vertical, comme l'homme du mĆ©tier le comprend sans aucune difficultĆ©.A motion transmission device 7 ensures the link between the movement of the two slide carriage. According to the embodiment shown, this device comprises at least one cable 8 which wraps around pulleys 9. For ease of presentation will be discussed hereinafter horizontal for what is parallel to the rule, and vertical as far as the rule is concerned, going from one rule to the other, as if the device were in place on a panel 2 laid horizontally. It is understood that the device can also be used on a vertical panel 2, as the skilled person understands it without any difficulty.

Selon un premier mode de rĆ©alisation reprĆ©sentĆ© aux fig. 1 Ć  4, le cĆ¢ble 8 part Ć  l'horizontale du chariot 10 de la rĆØgle supĆ©rieure 3, et va vers une extrĆ©mitĆ© de la rĆØgle supĆ©rieure 3 oĆ¹ il s'enroule sur une poulie 9, descend Ć  la verticale vers une autre poulie 9, puis revient Ć  l'horizontale jusqu'au chariot 10 de la rĆØgle infĆ©rieure 5.According to a first embodiment shown in Fig. 1 to 4 , the cable 8 extends horizontally from the carriage 10 of the upper ruler 3, and goes towards one end of the upper ruler 3 where it is wound on a pulley 9, descends vertically towards another pulley 9, then returns horizontally to the carriage 10 of the lower ruler 5.

Un deuxiĆØme cĆ¢ble 8 relie pareillement le chariot 10 de la rĆØgle infĆ©rieure 5 au chariot 10 de la rĆØgle supĆ©rieure 3 en passant par l'autre extrĆ©mitĆ© des rĆØgles 3, 5.A second cable 8 similarly connects the carriage 10 of the lower rule 5 to the carriage 10 of the upper rule 3 through the other end of the rules 3, 5.

Ce mode de rĆ©alisation permet Ć  l'outil 1, qui peut avoir une longueur de de 2 mĆØtres, ou 2,5 mĆØtres, d'effectuer des entailles, par exemple de trois millimĆØtres de profondeur, de part et d'autre d'un panneau 2, dont l'Ć©paisseur peut varier entre 10 et 20 mm, sur toute la largeur ou la longueur d'un panneau 2 (voir fig. 1). Une fois ces entailles effectuĆ©es, l'opĆ©rateur peut Ā« casser Ā» le panneau 2 le long des entailles, en obtenant une rupture trĆØs propre grĆ¢ce aux deux entailles de part et d'autre du panneau 2.This embodiment allows the tool 1, which may have a length of 2 meters, or 2.5 meters, to make notches, for example three millimeters in depth, on either side of a panel 2, whose thickness can vary between 10 and 20 mm, over the entire width or length of a panel 2 (see Fig. 1 ). Once these cuts are made, the operator can "break" the panel 2 along the notches, obtaining a very clean break thanks to the two notches on both sides of the panel 2.

Un ressort 11 est disposĆ© entre le cĆ¢ble 8 et le chariot 10, pour absorber notamment les rĆ©glages d'Ć©cartement entre les rĆØgles, sur lesquelles nous reviendrons un peu plus loin, tout en assurant une tension constante du cĆ¢ble 8.A spring 11 is disposed between the cable 8 and the carriage 10, in particular to absorb the spacing adjustments between the rules, to which we will come back a little further, while ensuring a constant tension of the cable 8.

Sur la partie verticale du cĆ¢ble 8, un guide-cĆ¢ble 16 est disposĆ©, permettant d'Ć©viter que la tension du cĆ¢ble 8 ait une tendance Ć  rapprocher les extrĆ©mitĆ©s des rĆØgles supĆ©rieure 3 et infĆ©rieure 5.On the vertical part of the cable 8, a cable guide 16 is arranged, making it possible to prevent the tension of the cable 8 from tending to bring the ends of the upper and lower rules 5 closer together.

L'outil 1 peut comprendre un deuxiĆØme circuit de deux cĆ¢bles 8 et de poulies 9 ayant la mĆŖme fonction de lien entre les deux chariots, comme illustrĆ© Ć  la fig. 4.The tool 1 may comprise a second circuit of two cables 8 and pulleys 9 having the same link function between the two carriages, as illustrated in FIG. Fig. 4 .

Selon un deuxiĆØme mode de rĆ©alisation reprĆ©sentĆ© aux fig. 5 Ć  8, le cĆ¢ble 8 part Ć  l'horizontale du chariot 10 de la rĆØgle supĆ©rieure 3, et va vers une extrĆ©mitĆ© de la rĆØgle supĆ©rieure 3 oĆ¹ il s'enroule sur une poulie 9, se dĆ©cale Ć  l'horizontale vers une poulie dĆ©calĆ©e 18, puis revient Ć  l'horizontale jusqu'Ć  l'autre extrĆ©mitĆ© de la rĆØgle supĆ©rieure 3, s'enroule autour d'une poulie dĆ©calĆ©e 18, puis descend en oblique vers une poulie 9 de la rĆØgle infĆ©rieure 5 et enfin part Ć  l'horizontale jusqu'au chariot 10 de la rĆØgle infĆ©rieure 5.According to a second embodiment shown in Fig. 5 to 8 , the cable 8 extends horizontally from the carriage 10 of the upper ruler 3, and goes towards one end of the upper ruler 3 where it winds on a pulley 9, shifts horizontally towards an offset pulley 18, then returns horizontally to the other end of the upper ruler 3, wraps around a shifted pulley 18, then descends obliquely to a pulley 9 of the lower ruler 5 and finally goes horizontally to the carriage 10 of the lower ruler 5.

Un deuxiĆØme cĆ¢ble 8 relie pareillement le chariot 10 de la rĆØgle infĆ©rieure 5 au chariot 10 de la rĆØgle supĆ©rieure 3 en passant par la rĆØgle infĆ©rieure 5 et des poulies dĆ©calĆ©es 18 de la rĆØgle infĆ©rieure 5, et selon un circuit analogue.A second cable 8 similarly connects the carriage 10 of the lower rule 5 to the carriage 10 of the upper rule 3 through the lower rule 5 and shifted pulleys 18 of the lower rule 5, and in a similar circuit.

Ce mode de rĆ©alisation permet Ć  l'outil 1 d'effectuer des entailles de part et d'autre d'un panneau 2, sur une partie de la largeur ou de la longueur d'un panneau 2 (voir fig. 4). Cet outil 1, par exemple de longueur environ 1,5 mĆØtres, permet donc notamment de dĆ©couper un rectangle dans un panneau 2, sans avoir Ć  dĆ©couper le panneau 2 sur toute sa largeur ni toute sa longueur. Une rĆØgle graduĆ©e 17 disposĆ©e sur le dessus de la rĆØgle infĆ©rieure 5 permet de positionner prĆ©cisĆ©ment l'outil 1 sur le panneau 2 selon la longueur de la paire d'entailles souhaitĆ©e.This embodiment allows the tool 1 to make cuts on either side of a panel 2, over part of the width or length of a panel 2 (see FIG. Fig. 4 ). This tool 1, for example of length about 1.5 meters, thus allows in particular to cut a rectangle in a panel 2, without having to cut the panel 2 over its entire width and its entire length. A graduated ruler 17 disposed on the top of the lower ruler 5 makes it possible to precisely position the tool 1 on the panel 2 according to the length of the desired pair of notches.

Un ressort 11 est disposĆ© entre le cĆ¢ble 8 et le chariot 10, pour absorber notamment les rĆ©glages d'Ć©cartement entre les rĆØgles, sur lesquelles nous reviendrons un peu plus loin, tout en assurant une tension constante du cĆ¢ble 8.A spring 11 is disposed between the cable 8 and the carriage 10, in particular to absorb the spacing adjustments between the rules, to which we will come back a little further, while ensuring a constant tension of the cable 8.

Sur la partie verticale du cĆ¢ble 8, un guide-cĆ¢ble 16 est disposĆ©, permettant d'Ć©viter que la tension du cĆ¢ble 8 ait une tendance Ć  rapprocher les extrĆ©mitĆ©s des rĆØgles supĆ©rieure 3 et infĆ©rieure 5.On the vertical part of the cable 8, a cable guide 16 is arranged, making it possible to prevent the tension of the cable 8 from tending to bring the ends of the upper and lower rules 5 closer together.

L'outil 1 peut comprendre un deuxiĆØme circuit de deux cĆ¢bles 8 et de poulies 9 ayant la mĆŖme fonction de lien entre les deux chariots, non reprĆ©sentĆ© Ć  la fig. 4. pour assurer un bon guidage du chariot porte-lame 10 de la rĆØgle infĆ©rieure 5.The tool 1 may comprise a second circuit of two cables 8 and pulleys 9 having the same link function between the two carriages, not shown in FIG. Fig. 4 . to ensure a good guiding of the blade carriage 10 of the lower rule 5.

Dans les deux modes de rĆ©alisation l'outil 1 peut comprendre en outre une poignĆ©e 12 reliĆ©e au chariot porte-lame 10 de la rĆØgle supĆ©rieure 3, et permettant Ć  un opĆ©rateur de faire effectuer le mouvement de translation Ć  la lame supĆ©rieure 4 le long de la rĆØgle supĆ©rieure 3.In both embodiments the tool 1 may further comprise a handle 12 connected to the blade carriage 10 of the upper ruler 3, and allowing an operator to perform the translational movement to the upper blade 4 along the top rule 3.

Par ailleurs, pour effectuer le rĆ©glage d'Ć©cartement entre les rĆØgles supĆ©rieure 3 et infĆ©rieure 5, l'outil 1 peut comprendre un moyen de rĆ©glage, par exemple par une molette de rĆ©glage 13 et un ressort de compression 14, ainsi qu'une glissiĆØre de hausse 21 ; un engrenage 22 assure le couplage entre la molette de rĆ©glage 13 et la glissiĆØre de hausse 21, en particulier dans la version ouverte (fig. 5) oĆ¹ il faut assurer l'Ć©cartement des rĆØgles supĆ©rieure 3 et infĆ©rieure 5 en porte Ć  faux.Furthermore, in order to adjust the distance between the upper and lower rulers 5, the tool 1 may comprise adjustment means, for example by an adjusting wheel 13 and a compression spring 14, as well as a slideway up 21; a gear 22 ensures the coupling between the adjusting wheel 13 and the rising slide 21, in particular in the open version ( Fig. 5 ) where it is necessary to ensure the separation of the upper rules 3 and lower 5 cantilever.

L'outil 1 peut comprendre en outre une manette de serrage 15 mobile en rotation autour d'une position de serrage du panneau 2, et une position d'ouverture. Cette manette en Ć©tant mise en position de serrage, agit sur un clapet 19, rappelĆ© Ć©lastiquement par un ressort de rappel 20. DĆØs que la position de l'outil 1 sur le panneau 2 est jugĆ©e correcte par l'opĆ©rateur, celui-ci tourne la manette de serrage 15 vers sa position de serrage. Le clapet 19 s'appuie alors sur le panneau 2 et l'empĆŖche de bouger, ce qui permet d'effectuer les encoches en toute fiabilitĆ© tout le long de l'outil 1, ou sur la longueur prĆ©dĆ©finie.The tool 1 may further comprise a clamping lever 15 movable in rotation about a clamping position of the panel 2, and an open position. This lever being placed in the clamping position, acts on a valve 19, resiliently biased by a return spring 20. As soon as the position of the tool 1 on the panel 2 is judged correct by the operator, the latter turns the clamping lever 15 towards its clamping position. The valve 19 then relies on the panel 2 and prevents it from moving, which allows to perform the notches reliably along the tool 1, or the predefined length.

On dĆ©crira ci-aprĆØs quelques solutions alternatives, s'appliquant indiffĆ©remment au mode de rĆ©alisation des fig. 1 Ć  4 et Ć  celui des fig. 5 Ć  8.Some alternative solutions will be described below, applying indifferently to the embodiment of the Fig. 1 to 4 and that of Fig. 5 to 8 .

Le mouvement de translation du chariot porte-lame 10 peut ĆŖtre motorisĆ©, par exemple par un petit moteur Ć©lectrique, rendant ainsi plus facile l'opĆ©ration de coupe pour l'opĆ©rateur. Cela oblige nĆ©anmoins Ć  Ć©quiper l'outil 1 d'une batterie, ou alors d'un cĆ¢ble Ć  brancher au secteur.The translational movement of the slide carriage 10 can be motorized, for example by a small electric motor, thus making the cutting operation easier for the operator. This nevertheless requires to equip the tool 1 with a battery, or else a cable to connect to the mains.

L'outil 1 peut ĆŖtre pliable, pour en faciliter le transport. Ceci est d'autant plus apprĆ©ciable quand l'outil 1 dĆ©passe une longueur de deux mĆØtres. Quand il est pliĆ© en deux, la longueur dĆ©passe alors Ć  peine un mĆØtre. Un dispositif est prĆ©vu pour que les cĆ¢bles 8 soient maintenus lors du pliage, et se remettent correctement en place sur les poulies 9 et 18 au dĆ©pliage, rendant l'outil 1 directement opĆ©rationnel.The tool 1 can be foldable for easy transport. This is all the more appreciable when the tool 1 exceeds a length of two meters. When it is folded in half, the length then exceeds barely one meter. A device is provided so that the cables 8 are held during folding, and are correctly placed back on the pulleys 9 and 18 unfolding, making the tool 1 directly operational.

L'outil 1 peut comporter, en plus d'une rĆØgle graduĆ©e 17, un mĆØtre rouleau intĆ©grĆ©, pour la mesure de la dimension Ć  couper dans le sens perpendiculaire Ć  l'outil 1.The tool 1 may comprise, in addition to a graduated rule 17, an integrated roll meter, for measuring the dimension to be cut in the direction perpendicular to the tool 1.

Par ailleurs, l'outil 1 peut ĆŖtre adaptĆ© pour couper des plaques 2 de plĆ¢tre revĆŖtues de laine de verre, par exemple un plaque d'Ć©paisseur 13 mm, revĆŖtue de laine de verre ou de polystyrĆØne d'Ć©paisseur 5 Ć  10 cm. La lame supĆ©rieure 4 est alors plus longue, pour traverser toute la laine de verre ou le polystyrĆØne, et rĆ©aliser une entaille dans la plaque 2 de plĆ¢tre. L'Ć©cartement des rĆØgles supĆ©rieure 3 et infĆ©rieure 5 est adaptĆ© en consĆ©quence.Furthermore, the tool 1 can be adapted to cut plasterboard 2 coated with glass wool, for example a 13 mm thick plate, coated with glass wool or polystyrene 5 to 10 cm thick. The upper blade 4 is then longer, to pass through all the glass wool or polystyrene, and make a notch in the plasterboard 2. The separation of the upper rules 3 and lower 5 is adapted accordingly.

L'avantage de la prĆ©sente invention rĆ©side en particulier en ce que l'outil 1 permet Ć  un opĆ©rateur de rĆ©aliser trĆØs facilement une dĆ©coupe droite et propre d'un panneau 2, en particulier d'une plaque de plĆ¢tre. L'outil 1 est lĆ©ger, facile Ć  manier seul, il est peu onĆ©reux et fonctionne sans source d'Ć©nergie.The advantage of the present invention lies in particular in that the tool 1 allows an operator to very easily realize a clean and straight cut of a panel 2, in particular a plasterboard. The tool 1 is lightweight, easy to handle alone, it is inexpensive and works without energy source.

Bien que l'invention ait Ć©tĆ© dĆ©crite Ć  propos d'une forme de rĆ©alisation particuliĆØre, il est bien entendu qu'elle n'y est nullement limitĆ©e et qu'on peut y apporter diverses modifications de formes, de matĆ©riaux et de combinaisons de ces divers Ć©lĆ©ments sans pour cela s'Ć©loigner du cadre des revendications.Although the invention has been described with respect to a particular embodiment, it is understood that it is in no way limited and that various modifications of shapes, materials and combinations thereof can be made. various elements without departing from the scope of the claims.

Claims (10)

  1. Cutting tool (1) for cutting a board (2), in particular a gypsum board, comprising an upper ruler (3) and an upper blade (4) movable in translation along said upper ruler (3) and configured, when it is placed flat on a board (2), to make a notch in the upper face of said board (2) along said upper ruler (3), further comprising a lower ruler (5), intended for, when said upper ruler (3) is arranged flat on a board (2) to be positioned under said board (2) in line with the upper ruler (3), and a lower blade (6) movable in translation along said lower ruler (5) and configured to make a notch above said lower ruler (5), and a motion transmission device (7) connecting the lower blade (6) to the upper blade (4), so that a translation of the upper blade (4) along the upper ruler (3) causes a translation of the lower blade (6) along the lower ruler (5), said motion transmission device (7) comprising a cable (8) connecting the lower blade (6) to the upper blade (4), and members for deflecting said cable (8), characterized in that said lower (6) and upper (4) blades are fixed with respect to said cable (8).
  2. Cutting tool (1) according to the previous claim, wherein said upper (4) and lower (6) blades are arranged so as to make notches on both sides of the board (2), so as to cut only a part of the thickness of said board (2).
  3. Cutting tool (1) according to one of the previous claims wherein said cable (8) comprises two parts arranged along the upper ruler (3) on the one hand and along the lower ruler (5) on the other hand and two parts connecting the upper ruler (3) to the lower ruler (5) these two parts being each arranged at one end of the tool (1), so that when the upper blade (4) makes a translation, the lower blade (6) makes a translation in opposite direction.
  4. Cutting tool (1) according to one of the previous claims, wherein said cable (8) comprises two parts arranged along the upper ruler (3) on the one hand and along the lower ruler (5) on the other hand and two parts connecting the upper ruler (3) to the lower ruler (5) these two parts being arranged on the side of a same end of the tool (1), so that when the upper blade (4) performs a translation, the lower blade (6) performs a translation in the same direction.
  5. Tool (1) according to one of the previous claims, wherein each blade is arranged on a blade carrier carriage (10), and the motion transmission device (7) comprises two parallel cables (8) connecting the lower blade (6) to the upper blade (4) through said blade carrier carriages, so as to improve the distribution of forces, and return members of said cables (8).
  6. Tool (1) according to one of the previous claims, comprising an elastic element, preferably a spring (11), disposed between the cable (8) and each of the upper and lower blades.
  7. Tool (1) according to one of the previous claims, wherein said upper blade (4) is integral with a handle (12) arranged on the upper ruler (3) in a manner accessible to an operator's hand.
  8. Tool (1) according to one of the previous claims, comprising adjusting means for adjusting the spacing between the upper and lower rulers.
  9. Tool (1) according to the previous claim, wherein said adjusting means comprises an adjusting wheel (13) and a compression spring (14).
  10. Tool (1) according to one of the previous claims, comprising a holding handle movable between a free position and a holding position, configured so that in the presence of a board (2), said board (2) is fixed with respect to the tool (1) in the holding position, and free with respect to the tool (1) in the free position.
EP13167512.6A 2013-05-13 2013-05-13 Tool for cutting gypsum board Active EP2883670B1 (en)

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CN113771239A (en) * 2021-08-03 2021-12-10 阜阳åø‚åøø久å»ŗęęœ‰é™å…¬åø Positioning device for cutting wall body plate

Citations (1)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
US2611179A (en) * 1946-05-02 1952-09-23 Joseph F Butler Cutting apparatus for wallboards and the like

Family Cites Families (3)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
US2378428A (en) * 1944-06-23 1945-06-19 Frank A Odian Siding cutter
US2706002A (en) * 1950-12-22 1955-04-12 Daniel A Garst Work clamping members having cutters movable longitudinally thereof for cutting sheet rock
US4294143A (en) * 1979-10-23 1981-10-13 Abraham Lieberman Method and apparatus for cutting into segments a continuously moving web of rigid insulation

Patent Citations (1)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
US2611179A (en) * 1946-05-02 1952-09-23 Joseph F Butler Cutting apparatus for wallboards and the like

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