EP3551819B1 - Outil de chantier, en particulier rabot à grille et méthode de fabrication dudit outil - Google Patents

Outil de chantier, en particulier rabot à grille et méthode de fabrication dudit outil

Info

Publication number
EP3551819B1
EP3551819B1 EP17771982.0A EP17771982A EP3551819B1 EP 3551819 B1 EP3551819 B1 EP 3551819B1 EP 17771982 A EP17771982 A EP 17771982A EP 3551819 B1 EP3551819 B1 EP 3551819B1
Authority
EP
European Patent Office
Prior art keywords
working
base body
longitudinal
construction tool
tool according
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.)
Active
Application number
EP17771982.0A
Other languages
German (de)
English (en)
Other versions
EP3551819A2 (fr
EP3551819C0 (fr
Inventor
Erich Decker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3551819A2 publication Critical patent/EP3551819A2/fr
Application granted granted Critical
Publication of EP3551819B1 publication Critical patent/EP3551819B1/fr
Publication of EP3551819C0 publication Critical patent/EP3551819C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/16—Implements for after-treatment of plaster or the like before it has hardened or dried, e.g. smoothing-tools, profile trowels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/36—Lap joints; Riveted, screwed, or like joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads

Definitions

  • the invention relates to a construction tool, in particular a robot for processing plaster or plaster base surfaces according to the preamble of claim 1.
  • a robot that comprises a plate-like base body in which several working ribs extending transversely to a longitudinal axis of this base body are inserted. These working ribs are made of a flat steel material and each forms a working edge used for processing, in particular smoothing, a plastered surface.
  • a Rabot which has an essentially rectangular base body formed by numerous, grid-like arranged struts.
  • a lattice robot is known whose longitudinal webs are manufactured as bent profiles and have a U-shaped cross-section. Openings are formed in the back area of these longitudinal webs through which the material removed during the use of the tool can fall away.
  • the invention is based on the objective of creating a construction tool of the aforementioned type, in particular a grid robot, which is characterized by high structural strength, offers advantages over previous designs from a handling perspective, and can also be manufactured more cheaply from a manufacturing perspective.
  • the U-profile is designed in such a way that it has several preferably rectangular recesses in the back area running between the longitudinal legs, from which material removed from the processed plaster surface by the working webs can escape to the rear out of the grid robot.
  • the base body is preferably designed to form a rectangular structure similar to the typical dimensions of corresponding construction tools.
  • the base body is preferably dimensioned such that its longitudinal length is approximately twice its transverse width.
  • the base body can be designed such that it comprises at least two, preferably three, longitudinally extending U-profile elements.
  • the base body according to the invention preferably also comprises several transverse webs extending transversely to the longitudinal webs and welded to the longitudinal webs.
  • both the longitudinal webs and the transverse webs are provided with cutout sections in the area of the intersections and are interlocked via correspondingly complementary cutout sections.
  • the components are joined so that the working edges defined by the respective webs extend essentially on the same working plane.
  • the longitudinal and transverse webs are preferably welded together in the area of the cutout sections.
  • the corresponding welds are preferably designed as relatively short fillet welds.
  • the construction tool according to the invention is provided with a handle assembly comprising a handle section located on a handle side of the base body facing away from the working zone.
  • This handle assembly can, in particular, be designed as a bow handle extending longitudinally along the base body.
  • the handle section can, in particular, be provided with a bow core made of flat material, wherein this bow core can be attached to the fixing tabs integrally formed with the U-profile, in particular by screwing, riveting, or pinning.
  • the working edges defined by the base body are preferably provided with extremely sharp teeth. These teeth can be produced by fine blanking, rolling, or, in particular, cutting.
  • the lamellae can be locally hardened.
  • a construction tool in particular a robot for processing plaster or plaster base surfaces, with a base body designed as a grid structure and comprising several working or transverse webs which as such form a working edge area (AK) extending into a working zone, wherein at least two of the aforementioned working or transverse webs are designed as longitudinal legs of a U-profile open towards the working zone, and these U-profiles are manufactured as formed sheet metal cutting parts, wherein the working edge area (AK) has a tooth contour with tooth tips and tooth valleys produced by jet cutting, wherein the tooth contour and the cutting guide are coordinated such that within a starting material plate the tooth tips of one blank extend into the tooth valleys of the adjacent blank.
  • a working edge area AK
  • the tooth contour and the cutting guide are coordinated such that within a starting material plate the tooth tips of one blank extend into the tooth valleys of the adjacent blank.
  • the illustrated construction tool is used for processing plaster or plaster carrier surfaces and comprises a base body 1, which is designed as a grid structure and includes several working webs 2, 3, 4 ... 7, which as such form a working edge area AK that plunges into a working zone.
  • the construction tool shown here is characterized by the fact that at least two of the aforementioned working webs 2 ... 7 are designed as longitudinal legs of a U-profile element open towards the working zone AK. This results in a particularly robust design of the construction tool, since all longitudinal legs are coupled to a further longitudinal leg via the back area of the corresponding profile element, thereby achieving particularly high internal stiffening and structural strength of the base body. Furthermore, according to the invention, a fixing tab F1, F2, made from a cutout in the U-profile element, is formed on that U-profile element U2 and extends beyond the back surface of the U-profile element U2 facing away from the working zone.
  • Each U-profile element is preferably designed such that it includes a back section R extending between the longitudinal legs, wherein recesses, for example in the form of rectangular cutouts, are formed in this back section R.
  • the fixing tabs F1, F2 provided here for attaching the handle 8 are formed from a sheet metal section that is erected from a region of the profile element intended to release a recess.
  • the basic body 1 is preferably designed such that it appears as a rectangular structure in a top view of the work zone AK in a manner known per se.
  • the basic body 1 is dimensioned such that its length L, measured in the longitudinal direction, is approximately twice as large as its width B, measured perpendicular to the longitudinal direction.
  • the base body 1 comprises a total of three longitudinally extending U-profile elements U1, U2, U3 and several (here five) transverse webs Q1, Q2, Q3, Q4 and Q5, also formed by U-profile elements.
  • the longitudinal profile elements U1, U2 and U3 are joined to the transverse profile elements Q1, Q2, Q3 via notch sections, so that the working edges AK defined by these webs extend on one and the same working plane level.
  • the grid robot according to the invention is provided with a handle 8 comprising a handle section 8a located on a handle side of the base body facing away from the working zone AK.
  • the handle 8 is designed as a bow handle extending in the longitudinal direction L of the base body.
  • the handle section comprises a bow core, which here is made of a flat steel material and is welded directly to the rear side of the central longitudinal profile U2 via offset sections.
  • the fixing tab F1, F2 integrally with a transverse web Q1, ... Q5.
  • the fixing tab is designed as a rectangular structure, with its upper transverse edge F1K acting as a support surface against which an inner surface of a receiving groove of a handle 8 rests intimately, thus preventing the handle 8 from tilting laterally.
  • the outer contour of the fixing tab F1, F2 is created directly as a result of the cut made to expose the recess O1.
  • the fixing tab F1, F2 can also be formed by welding on an additional layer or by folding out another tab (particularly possible in the variant according to [reference missing]).
  • Figure 1d are reinforced.
  • the fixing tab F1, F2 can also be formed integrally with a longitudinal web U2.
  • the fixing tab F1, F2 is designed as a rectangular structure, with its upper transverse edge F1K again acting as a support surface against which an inner surface of a receiving groove of a handle 8 rests tightly, thus preventing the handle 8 from tilting laterally.
  • both the longitudinal and transverse webs 6, 9 are provided with notches 10 and are joined together in the area of these notches.
  • the longitudinal and transverse webs are welded together in the area of these notches by the fillet welds indicated here.
  • FIG. 5 A highly simplified variant of a grid robot according to the invention is also shown, in which a substantially continuous The longitudinal side edge 7, 2 is reached by extending the corresponding longitudinal profile elements and front or rear transverse profile elements to the edge area of the base body 1.
  • the grid body of the robot according to the invention is preferably made of a high-strength steel material, in particular a corrosion-resistant steel material.
  • the design of the working edges of the grid robot, in particular the serration preferably formed there, is preferably adapted to the specific application. Partially or fully hardened plaster surfaces or plaster base surfaces can be smoothed using the grid robot according to the invention, or roughened with a grit defined by the serration of the working ribs.
  • the grid-type robot according to the invention is particularly suitable, with appropriate design of the working edges, for roughening plastic surfaces, especially insulating boards, to improve the adhesion of decorative plaster layers.
  • the profiles can be welded together from below and/or from the back; the welds can be designed as short fillet welds.
  • the joining areas of the profiles can be dimensioned so that the components are joined with a certain amount of pressure, thus ensuring that the components are largely held in the correct position even before the welding process.
  • Figure 7 is shown in the form of a perspective view of a further variant of a grid robot according to the invention with an angled end-edge crossbar STL.
  • the preceding descriptions apply analogously to this grid robot.
  • the end-edge section STL forms an integral part of the front cross-web element Q5', which is manufactured as a bending or forming profile.
  • the angle of attack W is preferably in the range of 60 to 75°.
  • the front working edge AK5 extends within the main working plane E defined by the other working edges.
  • the end-edge section STL makes it possible to advantageously work out internal corner areas with the tool according to the invention, since the end-edge section STL allows access to the innermost corner area.
  • the main body comprises two longitudinal webs U1 and U2 designed as bent profiles, as well as a side end web U3'.
  • the side end web is designed as a flat profile and forms an essentially flat longitudinal side surface.
  • the longitudinal webs U1, U2, the side end web U3' and the transverse webs Q1, Q2...Q5' are joined together via joint sections and notches and welded together.
  • the main body is preferably aligned after the individual parts have been assembled and ground smooth in the area of the working edges.
  • the grid body of the robot according to the invention is preferably made of a high-strength steel material, in particular a corrosion-resistant steel material.
  • the design of the working edges of the grid robot, in particular the serration preferably formed there, is preferably adapted to the specific application. Partially or fully hardened plaster surfaces or plaster base surfaces can be smoothed using the grid robot according to the invention, or roughened with a grit defined by the serration of the working ribs.
  • the grid-type robot according to the invention is particularly suitable, with appropriate design of the working edges, for roughening plastic surfaces, especially of insulating boards, to improve the adhesion of adhesive layers and decorative plaster layers. It is possible to design the working edges of the grid scraper in such a way that it also allows for smoothing or planing of joint compound areas in drywall construction.
  • the construction tool presented here is characterized by the fact that at least two of the aforementioned working webs are designed as longitudinal legs of a U-profile element open towards the working zone. This results in a particularly robust design of the construction tool, since all longitudinal legs are coupled to a further longitudinal leg via the back area of the corresponding profile element, thereby achieving particularly high internal stiffening and structural strength of the base body.
  • a fixing tab F1, F2 is formed on the transverse webs Q1, Q5. This fixing tab is made from a cutout in the U-profile element forming the respective transverse web and extends beyond the back surface of the U-profile element Q1, Q5 on a rear surface facing away from the working zone.
  • Each U-profile element is preferably designed such that it includes a back section R extending between the longitudinal legs, wherein recesses, for example in the form of rectangular cutouts, are formed in this back section R.
  • the fixing tabs F1, F2 provided here for attaching the handle 8 are formed from a sheet metal section that is erected from a region of the profile element intended to release a recess.
  • a cutting head follows a "zigzag path" that is designed such that alternating rounded tooth roots and pointed tooth tips are produced.
  • the cutting head is preferably designed as a waterjet cutting head.
  • the cutting head is also possible to design the cutting head as a laser cutting head or another type of cutting head.
  • the cutting action according to the invention can also be achieved with a wire EDM device.
  • the material strips M1 and M2 intended for the production of the U-profiles can be cut from sheet metal with minimal waste, forming their interlocking edges.
  • the material strips produced in this way can then be formed into the U-profiles according to the invention by plastic forming ("bending").

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Connection Of Plates (AREA)
  • Manipulator (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Steps, Ramps, And Handrails (AREA)

Claims (9)

  1. Outil de construction, notamment un râteau pour le travail du plâtre ou des supports en plâtre, comprenant :
    - un corps de base (1) en structure grillagée et comportant une pluralité de nervures de travail ou transversales (2,...7) formant ainsi une zone de travail (AK) s'étendant dans une zone de travail,
    où :
    - au moins deux des nervures de travail ou transversales (2,...7) susmentionnées sont conçues comme des branches longitudinales d'un profilé en U ouvert vers la zone de travail,
    - un dispositif de préhension (8) comprenant une partie de préhension située sur un côté du corps de base (1) opposé à la zone de travail,
    - le dispositif de préhension est conçu comme une poignée arquée s'étendant dans le sens longitudinal du corps de base, et la partie de préhension comprend une âme arquée,
    caractérisé en ce que
    - une patte de fixation (F1, F2) réalisée à partir d'une découpe du profilé en U est formée sur ce dernier, cette patte de fixation étant située sur une zone arrière (R) du corps de base opposée à la zone de travail, le profilé en U s'étendant au-dessus de cette zone arrière. région (R),
    - cette poignée en forme d'arc est fixée à la patte de fixation (F1, F2), et
    - ce noyau en forme d'arc est fixé à la patte de fixation (F1, F2) formée d'un seul tenant avec le corps de base.
  2. Outil de construction selon la revendication 1, caractérisé en ce que le profilé en U comprend une zone arrière (R) s'étendant entre les branches longitudinales, des évidements étant ménagés dans cette zone arrière (R), et en ce que la patte de fixation (F1, F2) est réalisée dans un profilé de matériau découvrant cet évidement.
  3. Outil de construction selon la revendication 1 ou 2, caractérisé en ce que le corps de base (1) se présente sous la forme d'une structure rectangulaire dans une vue en plan de la zone de travail (AK).
  4. Outil de construction selon la revendication 3, caractérisé en ce que le corps de base (1) est dimensionné de telle sorte que sa longueur (L), mesurée dans le sens longitudinal, soit environ deux fois supérieure à sa largeur (B), mesurée transversalement à ce sens.
  5. Outil de construction selon au moins l'une des revendications 1 à 4, caractérisé en ce que le corps de base (1) comprend deux profilés en U (U1, U3) s'étendant dans le sens longitudinal.
  6. Outil de construction selon au moins l'une des revendications 1 à 5, caractérisé en ce que le corps de base comprend des nervures longitudinales s'étendant dans le sens longitudinal et des nervures transversales (Q1, ... Q5) s'étendant transversalement à celui-ci.
  7. Outil de construction selon au moins l'une des revendications 1 à 6, caractérisé en ce que les nervures longitudinales et les nervures transversales sont reliées entre elles par des sections crantées, de sorte que les arêtes de travail qu'elles définissent s'étendent au même niveau du plan de travail.
  8. Outil de construction selon au moins l'une des revendications 1 à 7, caractérisé en ce que l'âme de l'étrier est vissée, rivetée ou goupillée sur la patte de fixation solidaire du corps de base.
  9. Outil de construction selon au moins l'une des revendications 1 à 8, caractérisé en ce qu'au moins deux des nervures de travail ou transversales (2,...7) susmentionnées sont conçues comme des branches longitudinales d'un profilé en U ouvert vers la zone de travail, et
    - ces profilés en U sont fabriqués sous forme de pièces de coupe en tôle formées,
    - où
    - la zone de bord de travail (AK) présente un contour de dent avec des pointes et des creux, réalisé par découpe au jet. Le contour de dent et la trajectoire de coupe sont coordonnés de telle sorte que, dans une plaque de matériau de départ, les pointes de dent d'une ébauche plongent dans les creux de dent de l'ébauche adjacente.
EP17771982.0A 2016-04-14 2017-04-18 Outil de chantier, en particulier rabot à grille et méthode de fabrication dudit outil Active EP3551819B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016004410 2016-04-14
PCT/EP2017/000489 WO2017190827A2 (fr) 2016-04-14 2017-04-18 Outil de chantier, en particulier rabot à grille

Publications (3)

Publication Number Publication Date
EP3551819A2 EP3551819A2 (fr) 2019-10-16
EP3551819B1 true EP3551819B1 (fr) 2025-12-10
EP3551819C0 EP3551819C0 (fr) 2025-12-10

Family

ID=59955523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17771982.0A Active EP3551819B1 (fr) 2016-04-14 2017-04-18 Outil de chantier, en particulier rabot à grille et méthode de fabrication dudit outil

Country Status (3)

Country Link
EP (1) EP3551819B1 (fr)
DE (1) DE102017003700A1 (fr)
WO (1) WO2017190827A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2020577A3 (cs) * 2020-10-23 2021-10-27 Václav Procházka Nástroj pro zbroušení nerovností aplikované strojní omítky

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US852991A (en) 1906-12-12 1907-05-07 Roubaud Antoine Mason's implement.
US1175512A (en) * 1915-11-13 1916-03-14 Louis J Flemal Scraper.
US2236093A (en) * 1939-04-27 1941-03-25 Richard N Friend Surface scraper
DE29511489U1 (de) * 1995-07-15 1995-09-21 Altun, Bürol, 90766 Fürth Schleifrabot
DE20211728U1 (de) 2002-07-29 2002-10-24 Fatma Yazar Werkzeug zum Verputzen, Glätten oder Einebnen von Oberflächen
DE102006057372A1 (de) * 2006-12-04 2008-06-05 Erich Decker Bauwerkzeug, insbesondere Gitter-Rabot
TW201006994A (en) * 2008-08-15 2010-02-16 Yu-Hua Lin A cementer tool and manufacturing method thereof

Also Published As

Publication number Publication date
WO2017190827A2 (fr) 2017-11-09
WO2017190827A3 (fr) 2018-01-04
EP3551819A2 (fr) 2019-10-16
EP3551819C0 (fr) 2025-12-10
DE102017003700A1 (de) 2018-03-15

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