EP1134058B1 - Tool for cutting-off a corrugated pipe - Google Patents

Tool for cutting-off a corrugated pipe Download PDF

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Publication number
EP1134058B1
EP1134058B1 EP01420059A EP01420059A EP1134058B1 EP 1134058 B1 EP1134058 B1 EP 1134058B1 EP 01420059 A EP01420059 A EP 01420059A EP 01420059 A EP01420059 A EP 01420059A EP 1134058 B1 EP1134058 B1 EP 1134058B1
Authority
EP
European Patent Office
Prior art keywords
blade
tool
cutting
rib
ribs
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.)
Expired - Lifetime
Application number
EP01420059A
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German (de)
French (fr)
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EP1134058A1 (en
Inventor
Alain Courant
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.)
Courant SA
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Courant SA
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Publication date
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Publication of EP1134058B1 publication Critical patent/EP1134058B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades

Definitions

  • the invention relates to a tool for cutting a pipe. ringed (see e.g. US-A-4912847).
  • a corrugated duct is a body of revolution, of section circular or other, the wall of which has sinusoidal undulations, of regular profile or not.
  • Such corrugated plastic pipes are used to contain electrical or optical conductors, conduits pneumatic or hydraulic circuit.
  • corrugated conduits are filled, as soon as they manufacturing, by the network they must protect and are supplied in rolls, that must be cut on demand.
  • this cutting is carried out manually by a cutting tool, cutter type, which is engaged radially in the hollow of a wave, then is moved circularly around the conduit.
  • the engagement in the hollow of the wave makes it possible to use the flanks of the waves juxtaposed as a means of guiding the blade and as a means of protection for the operator, but has the disadvantage of allowing the sharp blade penetrating the heart of the conduit.
  • the networks contained in the conduit, and invisible from the outside can be more or less severely injured by the blade.
  • the object of the present invention is to remedy this by improving a cutting-off tool comprising a handle, one of the ends is provided with means for positioning a sharp blade projecting from said end, and a blade clamping plate.
  • the plate and the end of the handle, receiving the blade and said plate are provided each and, on either side of the projecting part of the blade, of a rib having a cross section complementary to that of a hollow wavelength longer than the depth of this trough, but the end of which is separated from the edge of the blade by a distance less than the height of the corrugations.
  • Another advantage of this tool is that the sharp blade is perfectly protected by the two ribs and that it cannot hurt the operator.
  • Figure 1 is an exploded perspective view showing the components of the tool
  • Figures 2 and 3 are side views in section of the tool, respectively before engagement in a corrugated conduit and during sectioning of this conduit.
  • the cut-off tool is composed a handle 2, one end of which is provided, on the one hand, with a housing 3 for receiving a sharp blade 4, and on the other hand, a housing 5 for receiving a clamping plate 6.
  • the plate 6 is linked to the handle 2 by a screw 7, passing through a bore 8, passing through a bore 4a of the blade cut 4 and screwed into a threaded bore 9, or into an insert of round 2.
  • the end of the handle receiving the blade section 4 has a projecting rib 10, while the plate 6 has a projecting rib 12.
  • Figure 2 shows that when the components of the sectioning are assembled, the two ribs 10 and 12 are arranged symmetrically on either side of the sharp blade 4 and so as to correspond to two waves 13 framing a vertex 14 of the conduit 15 which must be sectioned.
  • each rib 10 has a cross section complementary to a trough 13 and a length L which is greater than the depth c of a trough. Furthermore, the top of each rib 10 and 12 projects from the cutting edge 4b of the blade 4 with a value S which is less than the height H of the undulations.
  • Figure 1 shows that the ribs 10 and 12 are curvilinear and have radii of curvature centered on the longitudinal axis of the conduit, when the tool is in the use position as shown in the figure 3.
  • Each rib projects from a cylindrical seat, respectively 16 for the handle, and 17 for the plate 6 which forms a wear indicator.
  • Figures 2 and 3 show that both at rest and during when used, the tool provides optimal protection for the operator and avoids any risk of injury.
  • the same tool can be used with diameter pipes different but with similar grooves.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
  • Knives (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

The pipe cutter consists of a handle (2) with a recess (3) in its head to receive a blade (4), and a fixing plate (6) with a screw (7) to hold the blade in place. The head and fixing plate have curved ribs (10, 12) which engage with grooves in the pipe while the blade cuts through the crest of the corrugation between the grooves. The ribs project from shoulders (16, 17) on the head and fixing plate which act as wear indicators for the ribs.

Description

L'invention concerne un outil pour tronconner un conduit annelé (voir e.g. US-A-4912847).The invention relates to a tool for cutting a pipe. ringed (see e.g. US-A-4912847).

Un conduit annelé est un corps de révolution, de section circulaire ou autre, dont la paroi comporte des ondulations sinusoïdales, de profil régulier ou non. De tels conduits annelés en matière synthétique sont utilisés pour contenir des conducteurs électriques ou optiques, des conduits de circuit pneumatique ou hydraulique.A corrugated duct is a body of revolution, of section circular or other, the wall of which has sinusoidal undulations, of regular profile or not. Such corrugated plastic pipes are used to contain electrical or optical conductors, conduits pneumatic or hydraulic circuit.

De plus en plus, les conduits annelés sont garnis, dès leur fabrication, par le réseau qu'ils doivent protéger et sont fournis en rouleau, qu'il faut tronçonner à la demande.Increasingly, corrugated conduits are filled, as soon as they manufacturing, by the network they must protect and are supplied in rolls, that must be cut on demand.

Actuellement, ce tronçonnage est effectué manuellement par un outil tranchant, de type cutter, qui est engagé radialement dans le creux d'une onde, puis est déplacé circulairement autour du conduit. L'engagement dans le creux de l'onde permet d'utiliser les flancs des ondes juxtaposées comme moyen de guidage de la lame et comme moyen de protection pour l'opérateur, mais présente l'inconvénient de permettre à la lame tranchante de pénétrer dans le coeur du conduit. Il en résulte que les réseaux contenus dans le conduit, et invisibles de l'extérieur, peuvent être blessés par la lame, de manière plus ou moins grave.Currently, this cutting is carried out manually by a cutting tool, cutter type, which is engaged radially in the hollow of a wave, then is moved circularly around the conduit. The engagement in the hollow of the wave makes it possible to use the flanks of the waves juxtaposed as a means of guiding the blade and as a means of protection for the operator, but has the disadvantage of allowing the sharp blade penetrating the heart of the conduit. As a result, the networks contained in the conduit, and invisible from the outside, can be more or less severely injured by the blade.

Pour remédier à cela, il faudrait assurer la coupe sur le sommet d'une onde, mais cela est très difficile avec un outil tranchant courant, car, en l'absence de guidage, l'outil à tendance à dériver dans un creux d'onde en réalisant une coupe non orthogonale à l'axe du conduit et gênant le raccordement ultérieur de celui-ci.To remedy this, it would be necessary to ensure the cut on the top of a wave, but this is very difficult with a common cutting tool, because, in the absence of guidance, the tool tends to drift in a wave trough by making a cut that is not orthogonal to the axis of the duct and interfering with the subsequent connection thereof.

La présente invention a pour objet de remédier à cela en améliorant un outil de tronçonnage comprenant un manche dont l'une des extrémités est munie de moyens de positionnement d'une lame tranchante saillant de ladite extrémité, et une plaquette de serrage de la lame.The object of the present invention is to remedy this by improving a cutting-off tool comprising a handle, one of the ends is provided with means for positioning a sharp blade projecting from said end, and a blade clamping plate.

A cet effet, dans l'outil selon l'invention, la plaquette et l'extrémité du manche, recevant la lame et ladite plaquette, sont munies chacune et, de part et d'autre de la partie dépassante de la lame, d'une nervure ayant une section transversale complémentaire de celle d'un creux d'onde, une longueur supérieure à la profondeur de ce creux d'onde, mais dont l'extrémité est séparée de l'arête de la lame par une distance inférieure à la hauteur des ondulations. To this end, in the tool according to the invention, the plate and the end of the handle, receiving the blade and said plate, are provided each and, on either side of the projecting part of the blade, of a rib having a cross section complementary to that of a hollow wavelength longer than the depth of this trough, but the end of which is separated from the edge of the blade by a distance less than the height of the corrugations.

Pour sectionner un conduit annelé avec cet outil, il suffit à l'opérateur d'engager les deux nervures de l'outil dans deux creux d'onde juxtaposés jusqu'à ce que l'arête tranchante de la lame pénètre dans le sommet d'onde compris entre les deux creux d'onde, puis, à partir de là, de déplacer circulairement l'outil autour du conduit. Durant ce déplacement, l'outil est parfaitement guidé par ses nervures circulant dans les creux d'onde, de sorte que sa lame tranchante réalise une coupe régulière et orthogonale à l'axe longitudinal du conduit.To cut a corrugated pipe with this tool, just the operator to engage the two ribs of the tool in two hollow waves juxtaposed until the cutting edge of the blade enters the vertex between the two troughs, then from there circularly move the tool around the pipe. During this trip, the tool is perfectly guided by its ribs circulating in the hollows wave, so that its sharp blade cuts evenly and orthogonal to the longitudinal axis of the duct.

Un autre avantage de cet outil est que la lame tranchante est parfaitement protégée par les deux nervures et qu'elle ne peut pas blesser l'opérateur.Another advantage of this tool is that the sharp blade is perfectly protected by the two ribs and that it cannot hurt the operator.

Enfin, la coupe s'effectuant sur un sommet d'onde, avec contrôle de la pénétration de la lame dans le conduit, la lame ne peut en aucun cas dépasser le fond d'un creux d'onde et, en conséquence, risquer de blesser les éléments disposés dans le conduit.Finally, the cut being made on a wave vertex, with control of the penetration of the blade into the duct, the blade cannot in no case exceed the bottom of a trough and, consequently, risk to injure the elements placed in the duct.

L'invention sera mieux comprise à l'aide de la description qui suit en référence au dessin schématique annexé.The invention will be better understood using the description which follows with reference to the accompanying schematic drawing.

Figure 1 est une vue en perspective éclatée montrant les éléments constitutifs de l'outil,Figure 1 is an exploded perspective view showing the components of the tool,

Figures 2 et 3 sont des vues de côté en coupe de l'outil, respectivement avant engagement dans un conduit annelé et pendant sectionnement de ce conduit.Figures 2 and 3 are side views in section of the tool, respectively before engagement in a corrugated conduit and during sectioning of this conduit.

Comme montré à la figure 1, l'outil de tronçonnage est composé d'un manche 2 dont l'une des extrémités est munie, d'une part, d'un logement 3 de réception d'une lame tranchante 4, et d'autre part, d'un logement 5 de réception d'une plaquette de serrage 6. Dans la forme d'exécution représentée, la plaquette 6 est liée au manche 2 par une vis 7, la traversant par un alésage 8, traversant un alésage 4a de la lame de coupe 4 et se vissant dans un alésage taraudé 9, ou dans un insert du manche 2.As shown in Figure 1, the cut-off tool is composed a handle 2, one end of which is provided, on the one hand, with a housing 3 for receiving a sharp blade 4, and on the other hand, a housing 5 for receiving a clamping plate 6. In the form of execution shown, the plate 6 is linked to the handle 2 by a screw 7, passing through a bore 8, passing through a bore 4a of the blade cut 4 and screwed into a threaded bore 9, or into an insert of round 2.

Selon l'invention, l'extrémité du manche recevant la lame de coupe 4 comporte une nervure en saillie 10, tandis que la plaquette 6 comporte une nervure en saillie 12.According to the invention, the end of the handle receiving the blade section 4 has a projecting rib 10, while the plate 6 has a projecting rib 12.

La figure 2 montre que, lorsque les éléments de l'outil de tronçonnage sont assemblés, les deux nervures 10 et 12 sont disposées symétriquement de part et d'autre de la lame tranchante 4 et de manière à correspondre à deux creux d'onde 13 encadrant un sommet d'onde 14 du conduit 15 qu'il faut sectionner.Figure 2 shows that when the components of the sectioning are assembled, the two ribs 10 and 12 are arranged symmetrically on either side of the sharp blade 4 and so as to correspond to two waves 13 framing a vertex 14 of the conduit 15 which must be sectioned.

Plus précisément, chaque nervure 10 a une section transversale complémentaire à un creux d'onde 13 et une longueur L qui est supérieure à la profondeur c d'un creux d'onde. Par ailleurs, le sommet de chaque nervure 10 et 12 est en saillie par rapport à l'arête tranchante 4b de la lame 4 d'une valeur S qui est inférieure à la hauteur H des ondulations.More specifically, each rib 10 has a cross section complementary to a trough 13 and a length L which is greater than the depth c of a trough. Furthermore, the top of each rib 10 and 12 projects from the cutting edge 4b of the blade 4 with a value S which is less than the height H of the undulations.

La figure 1 montre que les nervures 10 et 12 sont curvilignes et comportent des rayons de courbure centrés sur l'axe longitudinal du conduit, lorsque l'outil est en position d'utilisation comme montrée à la figure 3.Figure 1 shows that the ribs 10 and 12 are curvilinear and have radii of curvature centered on the longitudinal axis of the conduit, when the tool is in the use position as shown in the figure 3.

Chaque nervure fait saillie d'une portée cylindrique, respectivement 16 pour le manche, et 17 pour la plaquette 6 qui forme un témoin d'usure.Each rib projects from a cylindrical seat, respectively 16 for the handle, and 17 for the plate 6 which forms a wear indicator.

Pour sectionner un conduit annelé 15 au moyen de l'outil, il suffit, comme montré à la figure 2, de positionner les deux nervures 10 et 12 en vis à vis de deux creux d'onde 13, puis d'engager ces nervures dans les creux d'onde jusqu'à ce que la lame 4 pénètre et traverse la matière d'un sommet d'onde 14, comme montré à la figure 3. Dans ces conditions, la lame est parfaitement guidée en translation par appui des deux nervures 10 et 12 sur les faces des creux d'onde jouxtant le sommet d'onde, et tout déplacement de l'outil autour du conduit permet de réaliser une coupe régulière, orthogonale à son axe longitudinal. Cette coupe sur le sommet d'une onde est contrôlée en profondeur par les nervures 10, 12, de telle manière que l'arête tranchante 4b de la lame ne dépasse pas le fond des creux d'onde. Dans ces conditions, les conduits électriques ou optiques 18 disposés dans le conduit annelé ne risquent pas d'être sectionnés pendant l'opération de tronçonnage.To cut a corrugated duct 15 using the tool, it suffice, as shown in FIG. 2, to position the two ribs 10 and 12 opposite two wave hollows 13, then engaging these ribs in the waves until the blade 4 penetrates and passes through the material of a wave vertex 14, as shown in FIG. 3. Under these conditions, the blade is perfectly guided in translation by support of the two ribs 10 and 12 on the faces of the troughs adjoining the vertex, and all movement of the tool around the duct allows a cut regular, orthogonal to its longitudinal axis. This cut on the top of a wave is controlled in depth by the ribs 10, 12, such so that the cutting edge 4b of the blade does not exceed the bottom of the wave trough. Under these conditions, the electrical or optical conduits 18 disposed in the corrugated conduit are not likely to be cut for the cutting operation.

Si l'utilisation répétée de l'outil entraíne une usure des nervures 10 et 12, le contact des faces 16 et 17 avec les sommets d'ondes indique qu'il faut remplacer l'outil, car il peut alors permettre à la lame tranchante de pénétrer plus profondément dans le conduit en dépassant le fond des ondulations avec le risque de blesser les éléments de réseaux disposés dans ce conduit. If repeated use of the tool results in wear of the ribs 10 and 12, the contact of faces 16 and 17 with the wave vertices indicates that the tool must be replaced, because it can then allow the sharp blade to penetrate deeper into the duct by going beyond the bottom of the ripples with the risk of injuring arranged network elements in this conduit.

Les figures 2 et 3 montrent qu'aussi bien au repos que lors de son utilisation, l'outil assure une protection optimale de l'opérateur et évite tout risque de blessure.Figures 2 and 3 show that both at rest and during when used, the tool provides optimal protection for the operator and avoids any risk of injury.

Un même outil peut être utilisé avec des conduits de diamètres différents mais ayant des cannelures similaires.The same tool can be used with diameter pipes different but with similar grooves.

Claims (3)

  1. A tool for cutting to length a corrugated duct, comprising a handle (2), whereof one of the ends is equipped with means (3) for positioning a cutting blade (4) projecting from the said end, and a plate (6) for clamping the blade, characterised in that the plate (6) and that end of the handle (2) receiving the blade (4) and the said plate (6) are each equipped, on either side of the protruding part of the blade (4), with a rib (10, 12) having a cross-section complementary to that of a corrugation trough (13) and a length (L) which is greater than the depth (c) of this corrugation trough but whereof the end is separated from the sharp edge (4b) of the blade by a spacing (S) smaller than the height of the corrugations.
  2. A tool according to Claim 1, characterised in that each rib (10, 12) is curvilinear.
  3. A tool according to Claim 1, characterised in that each rib (10, 12) projects from a bearing surface (16, 17) which in coming into contact with the peaks of the corrugations forms a means of checking wear of the corresponding rib.
EP01420059A 2000-03-16 2001-03-07 Tool for cutting-off a corrugated pipe Expired - Lifetime EP1134058B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0003746A FR2806341B1 (en) 2000-03-16 2000-03-16 TOOL FOR CUTTING AN ANNELED CONDUIT
FR0003746 2000-03-16

Publications (2)

Publication Number Publication Date
EP1134058A1 EP1134058A1 (en) 2001-09-19
EP1134058B1 true EP1134058B1 (en) 2003-03-26

Family

ID=8848447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01420059A Expired - Lifetime EP1134058B1 (en) 2000-03-16 2001-03-07 Tool for cutting-off a corrugated pipe

Country Status (4)

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EP (1) EP1134058B1 (en)
AT (1) ATE235352T1 (en)
DE (1) DE60100137T2 (en)
FR (1) FR2806341B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011056040A1 (en) 2011-12-05 2013-06-06 Rothenberger Ag Device for cutting corrugated pipes
CN106476069B (en) * 2016-10-27 2019-01-01 浙江双林机械股份有限公司 A kind of imitative type cutter of plastic bellow cutting machine rotation
DE102019113513A1 (en) * 2019-05-21 2020-11-26 RoRi GmbH Cutting device for cutting a corrugated or corrugated pipe to length

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241504A (en) * 1979-03-02 1980-12-30 Ceron Jose D Record album opener
FR2596682A1 (en) * 1986-04-07 1987-10-09 Preposreve Knife, especially intended for cutting the external ridges of parallelepipedal packing boxes
US4912847A (en) * 1988-12-05 1990-04-03 Bradshaw William T Cutting tool for `entx`-type plastic conduit

Also Published As

Publication number Publication date
FR2806341A1 (en) 2001-09-21
DE60100137T2 (en) 2003-09-25
FR2806341B1 (en) 2002-05-10
EP1134058A1 (en) 2001-09-19
DE60100137D1 (en) 2003-04-30
ATE235352T1 (en) 2003-04-15

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