EP3789170A1 - Dispositif de séparation de dalles en ardoise - Google Patents

Dispositif de séparation de dalles en ardoise Download PDF

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Publication number
EP3789170A1
EP3789170A1 EP20190471.1A EP20190471A EP3789170A1 EP 3789170 A1 EP3789170 A1 EP 3789170A1 EP 20190471 A EP20190471 A EP 20190471A EP 3789170 A1 EP3789170 A1 EP 3789170A1
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EP
European Patent Office
Prior art keywords
slate
abutment
cutting edge
cutting
tool carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20190471.1A
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German (de)
English (en)
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EP3789170B1 (fr
Inventor
Sascha Klein
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Individual
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Individual
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Publication of EP3789170A1 publication Critical patent/EP3789170A1/fr
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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, which can be driven by an electric motor and can be carried along as a mobile device, for separating slate slabs, fiber cement slabs or ceramic slabs 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 deflected from one of the abutments opposite side penetrates into the slate and creates a cut edge or break edge.
  • Finishing in the sense of the invention is understood to mean the external shape of the slate on the one hand, but also the provision of perforations and recesses for the subsequent attachment of the trimmed plates to the substructures of roofs or facades on the other.
  • the traditional dressing which is still used today, is carried out using a dressing hammer and a hood bridge. Finishing cannot be dispensed with at the installation site, since it is only there that it is clear which panels will be installed at which point on the roof or facade, and it is therefore only at the installation site that it is established which slate panels require a special shape.
  • the DE 34 02 038 A1 a device for cutting the edges of slates on a stationary base, wherein a cutting tool is movable along a stationary rail guide.
  • the DE 199 60 426 A1 a trimming tool for slate that can be used with a jigsaw and that has only one machining tooth for trimming, which performs a vertical, permanent hammering movement to trim the slate.
  • the DE 199 43 598 A1 relates to a particularly battery-operated, preferably hand-held tool for processing fiber cement, slate or ceramic panels with an electric lifting drive for a tool set.
  • the DE 10 2012 103 564 A1 relates to slate shears for slates, cement slabs or the like, which has two levers pivotable in an intersecting manner. The two ends of the levers each form a gripping arm and a breaking arm.
  • a pair of scissors for cutting roofing slate is known, with a fixed shear part and a movable shear part designed as a double-armed lever, which is moved up and down by a connecting rod by means of an eccentric disk so that the shear jaw is not completely closed.
  • the roofing slate always rests on the lower cutting knife so that the slate does not slip out of the cutting surface and the slate can be easily advanced and rotated as required.
  • DE 188 688 A a device for trimming and punching slates.
  • a head is arranged, on the end face of which four curved knives are attached at equal intervals, these slipping 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.
  • An essential aspect in the processing of slate sheets relates to the assignment of the break edge and the cut edge to the front and back of the slate sheet.
  • the breaking edge of the cut is also the visible edge at the same time.
  • the breaking edge occurs when cutting on the rear side facing away from the cutting edge on the side of the abutment.
  • a hand-operated, bilateral-usable slate shear in which the breaking edge is formed at the top or at the bottom depending on the orientation of the cutting edge and the abutment. In one position for cutting slate, the breaking edge is visible on the top. In the opposite position, for example when used with fiber cement panels, the cut edge is created on the top.
  • the invention is based on the object of significantly facilitating the processing of slates and, in particular, of enabling cuts to be carried out largely without fatigue, either as a cut edge or as a break edge.
  • a device which is stationary or releasably fixable while the cutting process is being carried out and which is equipped with at least two cutting edges lying 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 further Cutting edge is arranged below an abutment, so that the slate can be placed against a respective contact surface of the at least one abutment during the cutting process either from above or below, and the tool carrier carrying the cutting edges is designed to be reversibly translationally movable during operation by means of the eccentric.
  • the invention is based on the knowledge that precise and largely fatigue-free processing of the slate is possible if the user does not - as in the prior art - himself apply the holding forces, but merely guides the 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 means. Both screws and quick-release fasteners, in particular clamping or tensioning elements, can be used for this purpose. The forces that occur when the slate is in contact with the abutment of the device during use are thus diverted into the stationary structure.
  • the device has at least two cutting edges which are fixed to the common tool carrier and which are arranged mirror-symmetrically with respect to the plane of the supplied slate.
  • the abutment enables the slate to be positioned from above or below so that the upper or lower cutting edge is used. In this way, the user can determine at any time by simply selecting the contact surface on which side the breaking edge and the cutting edge are created, with any markings on the slate remaining visible at all times.
  • An essential advantage here is the movement of the cutting edges along a translatory, reversing movement path, because this means that the angle enclosed between the cutting edge and the surface of the slate remains constant in every processing phase. It has already been shown that the machining quality of the cutting edge and the breaking 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 according to the principle of a crank drive or crank mechanism, the tool carrier at the same time forming the pusher element.
  • the effective direction of the thrust 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 slate dust produced has friction-reducing properties, so that wear on the moving parts of the device is reduced and, in particular, encapsulation of these parts is unnecessary.
  • the force is preferably introduced by an external rotary drive, an integrated electrical drive of the device not being excluded.
  • 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 slate.
  • a collecting device for fragments or also for reusable plate parts can be provided.
  • a particularly advantageous embodiment of the invention is also achieved in that at least the cutting edge arranged below the abutment is assigned a movable support element for transmitting an in particular adjustable pressure force for prestressing the slate against the contact surface of the abutment.
  • the slate to be processed from below is pressed by means of the support element against the force of gravity against the contact surface, the pressure force being dimensioned so that the slate plate can be shifted transversely to the effective direction of the pressure force, in particular in the horizontal plane, without any problems.
  • the support element makes contact between the slate plate and the contact surface ensured during the processing and thus in particular an undesired brief lifting of the slate during the return movement of the cutting edge reliably excluded.
  • the plane of the support element remains parallel to the contact surface of the abutment even if slates of different material thicknesses are cut.
  • a telescopic guide or a lever linkage in particular a parallelogram guide, is suitable for this purpose.
  • the pretensioning force of the movable support element can be adjusted depending on the mass or material properties of the slate to be processed. Since this is generated by means of an adjustable spring element, the pretensioning force can be varied at any time, even while the slate is being processed.
  • the tool carrier is kinematically coupled to at least one punch for introducing through openings that can be used as nail holes in the slate, the punch being assigned a contact surface of an abutment.
  • each punch is arranged in a plane which is in particular parallel spaced apart from the working plane during cutting.
  • the principle of reversing movement of several punches in opposite directions is also used with regard to the punch, in that the tool carrier is connected to at least two punches, each of which is assigned a contact surface of at least one abutment in such a way that the slate can be applied from above or below, whereby 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 selectively produce the conical enlargement or the essentially cylindrical recess on the visible side or the rear side of the slate.
  • the device has particularly compact dimensions and a low weight if the device has a coupling for a commercially available drilling and / or screwing tool that can be carried along to transmit a rotational movement, so that, for example, a cordless screwdriver, which is a standard tool anyway, can be used as a drive source for the rotary drive can to drive the eccentric of the device.
  • the drilling and / or screwing tool is supported on a contact surface of the device, which can also be implemented, for example, by a profile element that can be fixed in different positions on the device. This The profile element is fixed in the non-use position 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 it is not accidentally not used.
  • the activation of the drilling and / or screwing tool can be carried out using the switch provided.
  • a variant is particularly suitable for this, in which the device has an actuating element for transmitting an operating force to a switch or button of 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 slate, and enables quick shutdown .
  • Different switching positions can be implemented for continuous operation or for brief actuation.
  • sensors, in particular contactless 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 it is connected to the switch of the drilling and / or screwing tool by an electrically activatable control element.
  • the device is equipped with a guide for a stop which can be placed against the slate in particular in different angular positions and which can be moved translationally along the guide for delivery.
  • the slate can be moved by means of the stop without an undesired change in angle along the guide, which is designed, for example, as a rail or profile, in the feed direction to the cutting edge. This further reduces the risk of injury and simplifies the production of straight cuts in the slate.
  • scaling can be provided for setting a desired angular position or cutting length.
  • the device has a quick fixation for stationary or stationary fixation on objects in order to enable a simple, quickly releasable connection on site, which is at the same time resilient and the forces that occur when processing the slates are reliable and absorbs without deformation or displacement.
  • Presettings for a desired angular position, in particular for a horizontal alignment of the contact surfaces, can of course be implemented in a meaningful way.
  • FIG. 1 shows in a side view a device 1 according to the invention for separating slates 2.
  • the device 1 is first fixed to a stationary object 3 by means of a quick fixation before use.
  • a coupling 4 of the device 1 for transmitting a 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 the object 3 or on a supporting surface of the device 1, not shown.
  • 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 its guide 8 in a reversing and translatory manner in the direction of the arrow 9.
  • two mutually opposite cutting edges 10, 11 and two punches 12, 13 are interchangeably arranged in a common plane.
  • An abutment 14, 15, 16 is arranged between the cutting edges 10, 11 and above the upper punch 12 and below the lower punch 13, the abutment 14 arranged between the cutting edges 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 optionally from the visible side or the rear side of the slate 2 into the surface thereof and thus generates the typical breaking edge 19 and the cutting edge 20 on the desired side.
  • a support element 21, arranged below the abutment 14, is merely indicated for transferring a bias of the slate 2 against the contact surface 18 by means of an adjustable pressure force F, which significantly facilitates the handling and guidance of the slate 2 during processing.
  • the punches 12, 13 also penetrate either from the front or the rear of the slate 2, with the abutment 12 and 13 being assigned to them, respectively.
  • the device 1 To activate the cordless screwdriver, 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 constant 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)
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 true EP3789170A1 (fr) 2021-03-10
EP3789170B1 EP3789170B1 (fr) 2022-05-04

Family

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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)

Citations (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
DE29906928U1 (de) * 1999-04-17 1999-07-15 Flosbach Werner Gmbh Co Kg Elektrisches Werkzeug
DE19960426A1 (de) 1998-12-23 2000-07-06 Rathscheck Schiefer Und Dach S Zurichtwerkzeug für Platten, insbesondere Schieferplatten zur Dacheindeckung oder Fassadenbekleidung
EP1502684A1 (fr) * 2003-07-30 2005-02-02 TRUMPF Grüsch AG Machine portable pour travailler des pièces à usiner, en particulier en forme des ciseaux pour fondre des tôles
US20050028391A1 (en) 2003-02-25 2005-02-10 Peterson Eric L. Heavy duty drill shear attachment
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
US20160375510A1 (en) 2015-06-24 2016-12-29 Malco Products, Inc. 360° rotatable drill shear attachment

Patent Citations (13)

* 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
DE19960426A1 (de) 1998-12-23 2000-07-06 Rathscheck Schiefer Und Dach S Zurichtwerkzeug für Platten, insbesondere Schieferplatten zur Dacheindeckung oder Fassadenbekleidung
DE29906928U1 (de) * 1999-04-17 1999-07-15 Flosbach Werner Gmbh Co Kg Elektrisches Werkzeug
DE19943598A1 (de) 1999-04-17 2000-10-19 Flosbach Werner Gmbh Co Kg Elektrisches Werkzeug
US20050028391A1 (en) 2003-02-25 2005-02-10 Peterson Eric L. Heavy duty drill shear attachment
EP1502684A1 (fr) * 2003-07-30 2005-02-02 TRUMPF Grüsch AG Machine portable pour travailler des pièces à usiner, en particulier en forme des ciseaux pour fondre des tôles
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
US20160375510A1 (en) 2015-06-24 2016-12-29 Malco Products, Inc. 360° rotatable drill shear attachment

Also Published As

Publication number Publication date
DE102019123888B3 (de) 2020-11-26
EP3789170B1 (fr) 2022-05-04

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