EP3789170B1 - Dispositif de séparation de dalles en ardoise - Google Patents

Dispositif de séparation de dalles en ardoise Download PDF

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Publication number
EP3789170B1
EP3789170B1 EP20190471.1A EP20190471A EP3789170B1 EP 3789170 B1 EP3789170 B1 EP 3789170B1 EP 20190471 A EP20190471 A EP 20190471A EP 3789170 B1 EP3789170 B1 EP 3789170B1
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EP
European Patent Office
Prior art keywords
abutment
slate
slab
cutting edge
slabs
Prior art date
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Application number
EP20190471.1A
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German (de)
English (en)
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EP3789170A1 (fr
Inventor
Sascha Klein
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Individual
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Individual
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Classifications

    • 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
    • B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
    • B28D1/327—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist for cutting or shearing easily splittable working materials

Definitions

  • the invention relates to a device for cutting slabs of slate, fiber cement or ceramic slabs, which can be driven in particular by an electric motor and can be carried along in a mobile manner, with an abutment having a contact surface for the slab of slate, in which a tool carrier having a cutting edge is cyclically deflected by means of an eccentric so that the cutting edge is released from one of the abutments penetrates into the slab on the opposite side and creates a cut edge or break edge.
  • Trimming in the context of the invention is understood to mean the outer shape of the slabs on the one hand, but also the provision of perforations and recesses for the subsequent attachment of the trimmed slabs to the substructures of roofs or facades.
  • the traditional dressing which is still used today, is carried out using a dressing hammer and a hammer. It is not possible to dispense with trimming at the installation site, since only there is it clear which panels are to be installed at which point on the roof or facade, and it is therefore only clear at the installation site which slabs require a special shape.
  • the DE 199 60 426 A1 discloses a slate trimming tool that can be used with a jigsaw and has only one trimming tooth that performs a vertical, permanent hammering motion to trim the slab.
  • the DE 199 43 598 A1 and the DE 299 06 928 U1 which discloses the preamble of claim 1, relate to a battery-powered, preferably hand-held tool for processing fiber cement, slate or ceramic plates with an electric lifting drive for a tool set.
  • the DE 10 2012 103 564 A1 relates to a slate cutter for slabs of slate, cement slabs or the like, which has two crossing pivotable levers.
  • the two ends of the lever each form a gripping arm and a breaking arm.
  • DE 188 688 A a device for trimming and perforating slabs of slate.
  • a head is arranged at the end of a shaft, on the face of which four curved knives are fixed at equal intervals, these sliding past a support knife when the shaft rotates. The edge of the slate to be processed is placed on this support knife and moved as required.
  • the US 83 634 A shows a steam powered slate cutter in which a blade is mounted on a cyclically deflected lever arm.
  • the U.S. 2006/0 213 343 A1 shows a hand-held cutting tool for cutting fiber cement, with which clean cut edges can be produced quickly and dust-free.
  • An essential aspect in the processing of slabs of slate relates to the assignment of the breaking edge and the cut edge to the front and back of the slab of slate.
  • the breaking edge of the cut is also the visible edge.
  • the breaking edge occurs when cutting on the rear side facing away from the cutting edge on the side of the abutment.
  • the desired cutting path marked on the slab of slab must therefore often be transferred to the opposite side in order to apply the cutting edge there and create the desired breaking edge on the front side.
  • this carry leads to an additional effort and to errors.
  • a hand-operated slate cutter that can be used on both sides is also known through public prior use, in which the breaking edge forms at the top or bottom depending on the orientation of the cutting edge and the abutment. In one position for cutting slabs of slate, the broken edge forms visibly on the upper side. In the reverse position, for example when using fiber cement panels, the cut edge is on the top.
  • the object of the invention is to make the processing of slabs of slate much easier and in particular to enable cuts to be carried out largely without tiring, optionally as a cut edge or as a broken edge.
  • a device which can be fixed in a stationary or detachable manner while the cutting process is being carried out and which is equipped with at least two cutting edges located opposite one another in a common plane with the tool carrier, with at least one cutting edge above the at least one abutment and at least one other cutting edge Cutting edge is arranged below an abutment, so that the slab of slate can be placed against a respective contact surface of the at least one abutment from above or from below during the cutting process, and the tool carrier carrying the cutting edges is designed to be reversingly movable in translation by means of the eccentric during operation.
  • the invention is based on the finding that precise and largely fatigue-free machining of the slabs of slate is possible if the user does not - as in the prior art - control the holding forces himself, but only guides the slab of slate in relation to the cutting edge in the feed direction Generation of the contour must apply.
  • the device is releasably fixed during use directly at the place of use, for example on rafters, by means of a fixing agent. Both screws and quick-release fasteners, in particular clamping or tensioning elements, can be used for this purpose. The forces arising from the application of the slate to the abutment of the device in use are thus dissipated into the stationary structure.
  • the device has at least two cutters which are fixed to the common tool carrier and are arranged mirror-symmetrically in relation to the plane of the slab of slate supplied.
  • the abutment allows the slab to be applied from above or below, so that the upper or lower cutting edge is used. This allows the user to determine at any time by simply selecting the contact surface on which The breaking edge and the cut edge are formed on the side, whereby any markings on the slab remain visible at all times.
  • a major advantage is the movement of the cutting edges along a translational, reversing path of movement, because the angle enclosed between the cutting edge and the surface of the slab remains constant in every processing phase. It has already been shown that the processing quality of the cut edge and the broken edge that can be achieved in this way is far superior to the methods known from the prior art.
  • the reversing movement is realized by an eccentric based on the principle of a crank mechanism or slider crank mechanism, with the tool carrier also forming the thrust element.
  • the effective direction of the shearing force of the tool carrier generated in this way is preferably parallel to the connecting line between the axis of rotation of the rotational force introduction and the cutting edges, so that an undesirable lateral tilting moment is reduced. It has also been shown that the shale dust produced has friction-reducing properties, so that the wear on the moving parts of the device is reduced and, in particular, an encapsulation of these parts is unnecessary.
  • the force is preferably introduced by an external rotary drive, with an integrated electric drive of the device not being ruled out.
  • the cutting edges are preferably detachably connected to the tool carrier and can thus be easily exchanged if necessary.
  • the cutting edge has a maximum thickness that is greater than the thickness of the tool carrier, so that it does not come into contact with the cut surfaces of the slab of slate.
  • a collecting device for fragments or also for plate parts that can be reused can also be provided.
  • a particularly advantageous embodiment of the invention is also achieved in that at least the blade arranged below the abutment is assigned a movable support element for transmitting a particularly adjustable pressing force for prestressing the slab of slate against the contact surface of the abutment.
  • the slab of slate to be machined from below is pressed against the contact surface by means of the support element against the force of gravity, the pressing force being so is dimensioned such that a displacement of the slab transversely to the effective direction of the pressing force, i.e. in particular in the horizontal plane, is possible without any problems.
  • the support element ensures the contact between the slab of slate and the contact surface during processing and thus reliably prevents, in particular, an undesired momentary lifting of the slab of slate during the return movement of the cutting edge.
  • the plane of the support element also remains parallel to the contact surface of the abutment when slabs of different material thicknesses are cut.
  • a telescopic guide or a lever linkage in particular a parallelogram guide, is suitable for this.
  • the prestressing force of the movable support element can be adjusted depending on the mass or material properties of the slab of slate to be processed. Because this is generated by means of an adjustable spring element, the prestressing force can be varied at any time, even during the processing of the slab.
  • a further particularly advantageous embodiment of the invention is achieved in that the tool carrier is kinematically coupled to at least one punch for making through openings that can be used as nail holes in the slab of slate, with the punch being assigned a contact surface of an abutment.
  • each punch is arranged in a plane that is spaced apart, in particular parallel, from the processing plane during cutting.
  • the principle of the oppositely reversing movement of several stamps is also particularly preferably used with regard to the stamp, in that the tool carrier is connected to at least two stamps, each of which is assigned a contact surface of at least one abutment in such a way that the slab of slate can be placed on from above or below, wherein at least one stamp is arranged above the at least one abutment and at least one further stamp is arranged below an abutment.
  • the user can optionally create the conical widening or the essentially cylindrical recess on the visible side or the rear side of the slab.
  • the device then has particularly compact dimensions and a low dead weight if the device has a coupling for a commercially available, portable drilling and/or screwing tool for transmitting a rotary movement, so that, for example, a cordless screwdriver, which is already a standard tool, can be used as the drive source for the rotary drive can, to the eccentric of to drive the device.
  • the drilling and/or screwing tool is supported on a contact surface of the device, which can also be realized, for example, by a profile element that can be fixed in different positions on the device. In the non-use position, this profile element is fixed in a holder, which at the same time blocks the tool carrier or access to the cutting edges, so that the profile element must first be removed before use, so that its use is not inadvertently omitted.
  • the drilling and/or screwing tool can be activated using the existing switch.
  • a variant is particularly well suited for this purpose, in which the device has an actuating element for transmitting an operating force to a switch or button on the drilling and/or screwing tool, so that the actuating element can be reached in an ergonomically optimized manner, in particular from the feed side of the slabs of slate, and enables rapid shutdown .
  • Various switching positions can be implemented for continuous operation or for brief operation.
  • sensors, in particular non-contact signal transmitters can also be implemented.
  • the actuating element is optionally designed for purely mechanical power transmission by means of a coupling rod or a Bowden cable, or is connected to the switch of the drilling and/or screwing tool by an electrically activatable actuating element.
  • a further likewise particularly useful modification of the invention is achieved in that the device is equipped with a guide for a stop which can be placed against the slab in particular in different angular positions and which can be moved translationally along the guide for infeed.
  • the slab of slate can be moved by means of the stop without an undesired change in angle along the guide, which is designed as a rail or profile, for example, in the feed direction to the cutting edge. This reduces the risk of injury even further and makes it easier to make straight cuts in the slab.
  • a scale for setting a desired angular position or cutting length can of course be provided.
  • the device has a quick fix for stationary or stationary fixation on objects, in order to enable a simple, quickly detachable connection on site, which is also resilient and reliably withstands the forces that occur when processing the slabs of slate and accommodates without deformation or displacement.
  • Pre-settings for a desired angular position, in particular for a horizontal alignment of the contact surfaces, can be implemented in a sensible manner.
  • FIG. 1 shows a side view of a device 1 according to the invention for cutting slabs of slate 2.
  • the device 1 is first fixed to a stationary object 3 by means of a quick fixation.
  • a coupling 4 of device 1 for transmitting drive power and for initiating a rotational movement 5 is then coupled to a cordless screwdriver (not shown), which in turn is also supported on object 3 or on a support surface (not shown) of device 1 .
  • the rotational movement 5 initiated in this way is transmitted by means of an eccentric 6 to a tool carrier 7 which is thereby driven in a reversing translational manner in its guide 8 in the direction of the arrow 9 .
  • Two opposite cutting edges 10, 11 and two punches 12, 13 are interchangeably arranged on the tool carrier 7 in a common plane.
  • An abutment 14, 15, 16 is arranged between the cutters 10, 11 and above the upper punch 12 and below the lower punch 13, the abutment 14 arranged between the cutters 10, 11 each having a contact surface 17 on its upper side and a contact surface 18 has on its underside.
  • the cutting edge 10, 11 penetrates the surface of the slab 2 either from the visible side or the rear side and thus produces the typical breaking edge 19 and the cutting edge 20 on the desired side.
  • Shown only in outline is a support element 21 arranged below the abutment 14 for transmitting a pretension of the slab of slab 2 against the contact surface 18 by means of an adjustable pressing force F, which significantly facilitates the handling and guidance of the slab of slab 2 during processing.
  • the stamps 12, 13 penetrate either from the front or the back of the slab 2, with these being associated with the abutment 12 or 13, respectively.
  • the device 1 has an actuating element 22 equipped with a linkage for the mechanical transmission of an operating force to a switch or button of the cordless screwdriver, which is therefore within easy reach of the user and next to a position for continuous operation as a switch also enables short-term operation as a button.
  • actuating element 22 equipped with a linkage for the mechanical transmission of an operating force to a switch or button of the cordless screwdriver, which is therefore within easy reach of the user and next to a position for continuous operation as a switch also enables short-term operation as a button.

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

Claims (10)

  1. Dispositif (1) mobile transportable, notamment entraînable par un moteur électrique, pour le sectionnement de plaques en ardoise (2), de plaques en fibrociment ou de plaques en céramique, comprenant un contre-appui (14) présentant une surface d'application (17, 18) pour la plaque en ardoise (2), dans lequel, au moyen d'un excentrique (6), un porte-outil (7) présentant une lame (10, 11) est déplacé de manière cyclique, de telle sorte que la lame (10, 11) pénètre dans la plaque en ardoise (2) à partir d'un côté opposé au contre-appui (14) et produit une arête de coupe (20) ou une arête de rupture (19), caractérisé en ce que le dispositif (1) est stationnaire ou peut être fixé de manière amovible fixe pendant la réalisation du procédé de sectionnement et en ce que le dispositif (1) est équipé d'au moins deux lames (10, 11) agencées dans un plan commun, au moins une lame (10) étant agencée au-dessus et au moins une autre lame (11) étant agencée en dessous de l'au moins un contre-appui (14), de telle sorte que la plaque en ardoise (2) peut être appliquée pendant le processus de sectionnement au choix par le haut ou par le bas contre une surface d'application respective (17, 18) de l'au moins un contre-appui (14), et le porte-outil (7) portant les lames (10, 11) étant réalisé au moyen de l'excentrique (6) de manière à pouvoir se déplacer en translation de manière réversible pendant le fonctionnement.
  2. Dispositif (1) selon la revendication 1, caractérisé en ce qu'au moins la lame (11) agencée en dessous du contre-appui (14) est associée à un élément de support mobile (21) pour transmettre une précontrainte, notamment réglable, de la plaque en ardoise (2) contre la surface d'application (18).
  3. Dispositif (1) selon la revendication 2, caractérisé en ce que la force de précontrainte de l'élément de support mobile (21) est réglable.
  4. Dispositif (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le porte-outil (7) est couplé cinématiquement à au moins un poinçon (12, 13) pour réaliser des ouvertures de passage dans la plaque en ardoise (2).
  5. Dispositif (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le porte-outil (7) est relié à au moins deux poinçons (12, 13), auxquels est associé respectivement un contre-appui (15, 16), de telle sorte que la plaque en ardoise (2) peut être appliquée par le haut ou par le bas, au moins un poinçon (12) étant agencé en dessous d'un premier contre-appui (15) et au moins un autre poinçon (13) étant agencé au-dessus d'un deuxième contre-appui (16) .
  6. Dispositif (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif (1) présente un couplage (4) pour un outil de perçage et/ou de vissage transportable pour transmettre un mouvement de rotation (5).
  7. Dispositif (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif (1) présente un élément d'actionnement (22) pour transmettre une force de commande à un commutateur ou à un interrupteur de l'outil de perçage et/ou de vissage.
  8. Dispositif (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif (1) est équipé d'une butée pouvant être appliquée contre la plaque en ardoise (2), notamment dans différentes positions angulaires.
  9. Dispositif (1) selon la revendication 8, caractérisé en ce que la butée est mobile en translation le long d'un guide pour l'approche de la plaque en ardoise (2).
  10. Dispositif (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif (1) présente une fixation rapide pour la fixation stationnaire ou fixe sur des objets (3).
EP20190471.1A 2019-09-05 2020-08-11 Dispositif de séparation de dalles en ardoise Active EP3789170B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019123888.9A DE102019123888B3 (de) 2019-09-05 2019-09-05 Vorrichtung zum Trennen von Schieferplatten

Publications (2)

Publication Number Publication Date
EP3789170A1 EP3789170A1 (fr) 2021-03-10
EP3789170B1 true EP3789170B1 (fr) 2022-05-04

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Application Number Title Priority Date Filing Date
EP20190471.1A Active EP3789170B1 (fr) 2019-09-05 2020-08-11 Dispositif de séparation de dalles en ardoise

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EP (1) EP3789170B1 (fr)
DE (1) DE102019123888B3 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE79584C (fr) *
US83634A (en) * 1868-11-03 hetzell
DE188688C (fr) * 1907-01-05 1907-08-14
DE333291C (de) * 1920-05-26 1921-02-22 Josef Nolte Dachschiefer-Schnellschneideschere
DE3402038A1 (de) * 1984-01-21 1985-07-25 Franz Schell GmbH Hydraulik- und Maschinenbau, 6969 Höpfingen Vorrichtung zum zuschneiden der raender von schieferplatten
DE29822865U1 (de) * 1998-12-23 1999-03-25 Rathscheck Schiefer U Dachsyst Zurichtwerkzeug für Platten, insbesondere Schieferplatten zur Dacheindeckung oder Fassadenbekleidung
DE29906928U1 (de) * 1999-04-17 1999-07-15 Flosbach Werner Gmbh Co Kg Elektrisches Werkzeug
US7093365B2 (en) * 2003-02-25 2006-08-22 Malco Products, Inc. Heavy duty drill shear attachment
DE50305960D1 (de) * 2003-07-30 2007-01-25 Trumpf Gruesch Ag Maschinelles Handwerkzeug zum Bearbeiten von Werkstücken, insbesondere in Form einer Schere zum Schlitzen von Blechen
US20060213343A1 (en) * 2005-03-28 2006-09-28 Shear Technologies, Inc. Waste ejecting blade assemblies for hand-held cutting tools
DE102012103564A1 (de) * 2012-04-23 2013-10-24 P.F. Freund & Cie. Gmbh Schieferschere
US9649702B2 (en) * 2015-06-24 2017-05-16 Malco Products, Inc. 360° rotatable drill shear attachment

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Publication number Publication date
EP3789170A1 (fr) 2021-03-10
DE102019123888B3 (de) 2020-11-26

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