EP3943247B1 - Werkzeug und verfahren zum entfernen einer dichtung aus einer rille, insbesondere für eine wasserstrahlvorrichtung - Google Patents

Werkzeug und verfahren zum entfernen einer dichtung aus einer rille, insbesondere für eine wasserstrahlvorrichtung Download PDF

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Publication number
EP3943247B1
EP3943247B1 EP21184859.3A EP21184859A EP3943247B1 EP 3943247 B1 EP3943247 B1 EP 3943247B1 EP 21184859 A EP21184859 A EP 21184859A EP 3943247 B1 EP3943247 B1 EP 3943247B1
Authority
EP
European Patent Office
Prior art keywords
tool according
seal
end piece
tool
central rod
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
EP21184859.3A
Other languages
English (en)
French (fr)
Other versions
EP3943247A1 (de
EP3943247C0 (de
Inventor
Alain PLANET
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.)
Andritz Perfojet SAS
Original Assignee
Andritz Perfojet SAS
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Publication date
Application filed by Andritz Perfojet SAS filed Critical Andritz Perfojet SAS
Publication of EP3943247A1 publication Critical patent/EP3943247A1/de
Application granted granted Critical
Publication of EP3943247B1 publication Critical patent/EP3943247B1/de
Publication of EP3943247C0 publication Critical patent/EP3943247C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0092—Tools moving along strips, e.g. decorating or sealing strips, to insert them in, or remove them from, grooves or profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0028—Tools for removing or installing seals

Definitions

  • the present invention relates to a tool for removing a seal from a groove, as well as to a method for removing a seal from a groove for receiving a seal by this tool.
  • Water-jet bonding which is a consolidation of the fibrous web by water-jet bonding, is widely used in the field of nonwovens.
  • an injector is needed which uniformly distributes the water under pressure, ranging from 1 to 400 bar, over the entire length of the web formed by the machine.
  • the water jet projection device also referred to as an injector, comprises in particular a body and a pressure-resistant jaw and delimiting an interior chamber having an inlet.
  • the inner chamber communicates with the interposition of a perforated plate with an outlet slot opening outside the jaw or the injector.
  • the invention relates to a tool making it possible to remove the seal cleanly, without breaking it, without taking the risk of leaving residues in the jaw and without opening the rear light of the jaw, which is particularly difficult to access on industrial machines.
  • the nozzles By making the tip penetrate into the chamber of the injector, the nozzles scrape the grooves, in which the rectilinear strands of the seal are located and lift them. When the tip reaches the curvilinear strand furthest from the lumen through which the tip was introduced, this curvilinear strand also rises. By removing the end cap, the entire gasket is removed.
  • the end piece comprises on either side of the longitudinal central bar, two longitudinal bars, in the longitudinal alignment of the facets, of less thickness than the central bar, coming from from the lowest upper transverse edge of the ramp and extending rearwards beyond it to arcuate rear edges, defining therebetween and with the rear edge of the central bar and the upper face a housing for receiving a part for holding a separate extension plate, with a circular edge, adapting to the rear edges in an arc of a circle, the extension plate having the thickness of the bars and the sum of the thickness of the extension plate and the thickness of the retaining piece being equal to the thickness of the central bar.
  • the extension plate is longer than the end piece. It can be 1000-8000mm long, while the end cap can be 70-300mm long. The length is parallel to the median plane of the end piece. The width is understood transversely to the length.
  • the angle of the ramp and/or of the facets with the lower face of the endpiece is between 5 and 30°, preferably between 10 and 20° and better still is 15°.
  • the angle of the ramp with the lower face is equal to that of the facets with the lower face.
  • the invention also relates to the use of a tool according to the invention for removing a seal from the chamber of an injector, the overall cross section of the tool being just lower than the cross section of the bedroom.
  • the invention finally relates to a process for removing a seal from the chamber of an injector, in which the tool according to the invention is introduced into the chamber of the injector on the jaw side until the curvilinear section is freed. closer to the joint.
  • This curvilinear strand is pulled and it is held by hand or, preferably, it is hung on a hook or button from the injector on the side of the operator, the tool according to the invention is then further introduced. pads on the jaw side until it comes into abutment on the transmission side, so that the seal is released and all of the tools and the seal are removed.
  • the injector shown in figure 1 comprises an upper body 1, to which is screwed a jaw 2, the assembly constituting the stainless steel injector which resists the pressure.
  • the body and the jaw delimit an interior chamber 3 having an entrance and communicating via a slot 4, with the interposition of a perforated plate (not shown in the drawing), with an outlet slot 5 opening outside the jaw or the 'injector.
  • An endless groove 6 is machined in the jaws 2, surrounding the outlet slot 5.
  • this groove must be mounted an elastic O-ring 7 made of material elastomer.
  • the groove 6 has two rectilinear opposite parts 8, 9, each delimited by an inner edge 10, 11 and by an outer edge 12, 13, and two curved end parts (only one is shown) 14, which are not all two delimited only by an inner edge.
  • the groove is said to be open. A part of a joint which falls within the range thus delimited will easily come to rest on the edge 14 by elastic return, if the joint is stretched beforehand.
  • a second slot 15 is formed on a second end face of the jaw 2. It has dimensions such that a tool for fitting a seal in the groove can pass through it.
  • a first slot 15 of the same size is located at the other end of the tunnel 16 delimited by its slots 15 by a face 17 of the body 1 and by the lower face 18; in which groove 6 is machined.
  • the tool according to the invention comprises an endpiece in one piece of symmetry with respect to a longitudinal median plane, having a flat lower face 20, from which two longitudinal pads 21 come, each having a front end, and an upper face .
  • Face 20 is lower than the figure, but when the tooling is intended to be used in an inclined or differently oriented injector, it may be above the other face.
  • the two faces are referred to as lower and upper simply for ease of discussion.
  • a T-shaped ramp 23 which is inclined by 15° with respect to the lower face and the lower transverse edge from which the two facets 22 originate and whose highest transverse edge, narrower than the lower transverse edge, is common to the front edge of a central bar 24 of lesser width than the width of the lower face 20.
  • On either side of the central bar 24 extend two strips 25 longitudinal, of less thickness than the central bar 24, in the longitudinal alignment of the facets 22 and extending rearwardly beyond the central bar 24, defining between them and with the rear edge of the central bar 24 and the upper face a housing for receiving a part 26 for holding a separate extension plate 27 with a circular edge, fitting to the rear edge in an arc of a circle.
  • the extension plate 27 has the thickness of the strips 25 and the sum of the thickness of the extension plate 27 and the thickness of the retaining part 26 is equal to the thickness of the central bar 24. It has a length of 6 m, while the end piece has a length of 1 m.
  • a central hole 28 is provided in the tip.
  • a finger 29 of the holding piece 26 penetrates through this hole in the end piece.
  • the flat 27 extension is screwed in a removable manner by two screws 30 with countersunk head (screw Fhc), which does not protrude from the lower face 20, and by two nuts 31 at the tip, and held by the part 26 for holding on the rest of the tools.
  • the extension dish 27 is made of a stainless steel strip, while the rest of the parts are made of a rigid plastic material.
  • the extension dish 27 can be rolled up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Nonwoven Fabrics (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Claims (10)

  1. Werkzeug zum Entnehmen einer Dichtung aus einer Rille zur Aufnahme dieser Dichtung in einer Kammer einer Wasserstrahlvorrichtung, dadurch gekennzeichnet, dass es ein einstückiges Endstück umfasst, das in Bezug auf eine Mittellängsebene symmetrisch ist und eine plane Unterseite (20), aus der zwei Längskufen (21) hervorgehen, die jeweils ein vorderes Ende haben, und eine Oberseite hat, dadurch gekennzeichnet, dass, auf der von vorne nach hinten nacheinander ausgearbeitet sind:
    - vorne zwei Facetten (22), die in Bezug auf die Unterseite hin geneigt sind und bis zu den Enden der Kufen (21) verlaufen, wobei sie dort Abstreifspitzen bilden;
    - eine T-förmige Rampe (23), von deren unterem Querrand die beiden Facetten ausgehen und deren höchster oberer Querrand, der weniger breit als der untere Querrand ist, dem vorderen Querrand eines zentralen Längsstabs (24) gemein ist; und
    - der zentrale Stab (24) von geringerer Breite als der Breite der Unterseite (20).
  2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass das Endstück beidseits des zentralen Stabs (24) zwei Längsstege (25), in der Längsflucht der Facetten (22), von geringerer Dicke als der zentrale Stab (24) umfasst, die aus dem am wenigsten hohen oberen Querrand der Rampe (23) hervorgehen und sich nach hinten hin über den zentralen Stab (24) hinaus bis zu kreisbogenförmigen hinteren Rändern fortsetzen, wobei sie untereinander und mit dem hinteren Rand des zentralen Stabs (24) und der Oberseite einen Sitz zur Aufnahme eines Halteteils (26) zum Halten eines separaten Verlängerungsflachstücks (27) bilden, das an die kreisbogenförmigen hinteren Ränder passt, wobei das Verlängerungsflachstück (27) die Dicke der Stege (25) hat und die Summe aus der Dicke des Verlängerungsflachstücks (27) und aus der Dicke des Halteteils (26) gleich der Dicke des zentralen Stabs (24) ist.
  3. Werkzeug nach Anspruch 1, gekennzeichnet durch ein Zentrierungsloch (28) in dem Endstück und durch einen Finger (29) des Halteteils (26), der in dieses Loch (28) eindringt, wobei er durch eine Öffnung des Führungsflachstücks (27) verläuft, die dem Loch (28) überlagert ist.
  4. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Winkel der Facetten (22) mit der Unterseite (20) des Endstücks zwischen 5 und 30° beträgt.
  5. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Winkel der Rampe (23) mit der Unterseite (20) des Endstücks zwischen 5 und 30° beträgt.
  6. Werkzeug nach den Ansprüchen 4 und 5, dadurch gekennzeichnet, dass der Winkel der Rampe (23) mit der Unterseite (20) gleich dem der Facetten (22) ist.
  7. Werkzeug nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass das Verlängerungsflachstück (27) länger als das Endstück ist.
  8. Werkzeug nach Anspruch 7, dadurch gekennzeichnet, dass das Verlängerungsflachstück (27) eine Länge von 1 000 bis 8 000 mm hat, während das Endstück eine Länge von 70 bis 300 mm hat.
  9. Verwendung eines Werkzeugs nach einem der vorhergehenden Ansprüche zum Entnehmen einer Dichtung aus der Kammer eines Injektors, dadurch gekennzeichnet, dass der Querschnitt über alles des Werkzeugs knapp kleiner als der Querschnitt der Kammer ist.
  10. Verfahren zum Entnehmen einer Dichtung aus der Kammer eines Injektors, bei dem man das Werkzeug nach einem der Ansprüche 1 bis 8 in die Kammer des Injektors, Kufen backenseitig, einführt, bis der nächstliegende gekrümmte Abschnitt der Dichtung freigegeben wird, man zieht an diesem gekrümmten Strang und man hält ihn mit der Hand fest oder hängt ihn bevorzugt in einen Haken oder Knopf ein, der bedienerseitig aus dem Injektor hervorgeht, man führt anschließend das erfindungsgemäße Werkzeug, Kufen backenseitig, ein, bis es antriebsseitig zur Anlage gelangt, so dass die Dichtung freigegeben wird, und man entnimmt die Anordnung aus dem Werkzeug und der Dichtung.
EP21184859.3A 2020-07-24 2021-07-09 Werkzeug und verfahren zum entfernen einer dichtung aus einer rille, insbesondere für eine wasserstrahlvorrichtung Active EP3943247B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2007830A FR3112709B1 (fr) 2020-07-24 2020-07-24 Outillage et procédé de retrait d'un joint d'une gorge, notamment pour un dispositif de projection de jet d'eau

Publications (3)

Publication Number Publication Date
EP3943247A1 EP3943247A1 (de) 2022-01-26
EP3943247B1 true EP3943247B1 (de) 2023-06-07
EP3943247C0 EP3943247C0 (de) 2023-06-07

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Application Number Title Priority Date Filing Date
EP21184859.3A Active EP3943247B1 (de) 2020-07-24 2021-07-09 Werkzeug und verfahren zum entfernen einer dichtung aus einer rille, insbesondere für eine wasserstrahlvorrichtung

Country Status (3)

Country Link
EP (1) EP3943247B1 (de)
CN (1) CN113967889A (de)
FR (1) FR3112709B1 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050193539A1 (en) * 2004-03-02 2005-09-08 Payne Robert D. Molding remover system
US20080127473A1 (en) * 2006-12-01 2008-06-05 Min-Chi Yu Tool kit for removing decorative plates and trims of vehicles

Also Published As

Publication number Publication date
EP3943247A1 (de) 2022-01-26
CN113967889A (zh) 2022-01-25
FR3112709B1 (fr) 2022-07-29
FR3112709A1 (fr) 2022-01-28
EP3943247C0 (de) 2023-06-07

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