WO2010119143A1 - Cutting nippers for plastic tubes - Google Patents

Cutting nippers for plastic tubes Download PDF

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Publication number
WO2010119143A1
WO2010119143A1 PCT/ES2009/000125 ES2009000125W WO2010119143A1 WO 2010119143 A1 WO2010119143 A1 WO 2010119143A1 ES 2009000125 W ES2009000125 W ES 2009000125W WO 2010119143 A1 WO2010119143 A1 WO 2010119143A1
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WO
WIPO (PCT)
Prior art keywords
blade
pin
arm
arms
tilt
Prior art date
Application number
PCT/ES2009/000125
Other languages
Spanish (es)
French (fr)
Inventor
Alberto Groten
Martín EIZAGUIRRE BENGOETXEA
Manuel AIZPURUA EGAÑA
Original Assignee
Zenten Bernhard Groten, S.L.
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 Zenten Bernhard Groten, S.L. filed Critical Zenten Bernhard Groten, S.L.
Priority to PCT/ES2009/000125 priority Critical patent/WO2010119143A1/en
Publication of WO2010119143A1 publication Critical patent/WO2010119143A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/26—Hand shears; Scissors with intermediate links between the grips and the blades, e.g. for remote actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely

Definitions

  • the present invention relates to a cutting pliers, which has been specially designed for plastic pipes, such as PVC, PP, PX, etc. tubes, as well as for multilayer pipes and the like.
  • the object of the invention is to achieve a pincer which, in addition to being structurally very simple, easy to assemble and consequently economical, allows a very easy replacement of its blade without the need to disassemble the pincer, specifically by removing a pin.
  • the invention thus falls within the scope of cutting tools for plastic pipes.
  • Pliers are known for cutting plastic tubes based on two articulated arms, scissor type, to one of which a blade is joined laterally that in the closing of the pliers and with interposition of the corresponding tube, advances towards an existing bearing in the another arm, producing the cut.
  • This type of pliers presents a problem with a double slope, on the one hand the blade always remains in a direct situation accessibility, which implies a permanent risk of accident by cutting, and on the other hand the blade is rigidly attached to the corresponding arm with the collaboration of a pair of screws, which is a slow task of replacing the blade, since it is necessary remove the aforementioned screws, remove the used blade, place the new blade and assemble and tighten the aforementioned screws.
  • the cutting pliers for plastic tubes proposed by the invention fully and satisfactorily solve the problems described above, in the two aspects mentioned, so that in addition to keeping your blade retracted in an inoperative situation, it allows an easy and rapid disassembly / assembly for blade replacement, no need to disassemble any of the scissor arms, no need to act on no screw, exclusively removing a pin, as previously mentioned, maneuver that is obviously extremely fast and simple.
  • the clamp that is recommended is of the type that are constituted by two arms joined together by means of a scissor joint, one of whose peculiarities is that each of said arms is single-piece, so that its assembly is simplified, specifically reduced to the coupling between both pieces in a suitable position so that they are related by its own tilt axis.
  • One of said arms incorporates a window in correspondence with its middle plane, through which the other arm partially penetrates inside.
  • a pin is established as a tilting axis for the blade, and in contrast to said window the outer arm incorporates a groove through which said blade is susceptible to emerge when the pliers are closed.
  • the blade is also tiltable on a second pin, through a roller that rotates on said pin, but with the particular feature that the tilting of the blade with respect to said roller is carried out through an open groove towards one of the edges of the blade, so that the tilting axis of the scissor arms and the two aforementioned pins, form a deformable triangle that gives the blade a planetary movement, specifically a combined movement of translation and rotation towards the cutting edge defined on the outer arm.
  • the openness of the aforementioned blade groove allows that, by removing the pivot or pivot pin for it, said blade can easily be removed from the pliers for replacement.
  • Figure L- Shows, according to a plan view, a cutting pliers for plastic pipes made in accordance with the object of the present invention, in an inoperative situation therefor.
  • Figure 2. Shows a representation similar to the previous figure of the same pincer, now in a situation of maximum opening.
  • Figure 3 shows a similar to that of Figure 2, but in which the arms have been represented transparently to allow visualizing the internal structure of the pliers.
  • Figure 4.- Shows a detail in plan of the blade.
  • Figure 5. Shows, finally, a representation in side elevation of the pin in function of tilting axis for the blade.
  • the cutting pliers that the invention proposes are constituted from two arms (1 and 2), articulated jointly with each other through a pin (3), determining a scissor joint, adopting the arm (1) a ribbed configuration in all its extension, with inwardly oriented concavity, to minimize the amount of material that participates in it, while the arm (2), also grooved in its half corresponding to its handle, It is finished off in a head (4) that in its middle area incorporates a pin (5) in function of tilting axis for the blade (6), which is in turn provided with a hole (7) for access of said pin ( 5), said head being hollow and open towards the inner edge of the arm itself (2), in a sufficient magnitude to allow both the play of the corresponding limb of the first arm (1), through the axis (3), as blade tilting (6) during the cutting maneuver, a blade that emerges towards the outer edge of the arm (2), specifically towards the classic
  • the tilt axis (3) of both arms, the tilt pin (5) for the blade (6) and the pin assembly (9) and the corresponding roller associated therewith, form a deformable triangle that forces the blade to swing, while turning, so that the attack on the tube to be cut occurs at all times in the most suitable direction.
  • the blade can be easily removed for replacement, without pulling the internal end of it, that is, the end corresponding to the closed bottom of the groove (10).
  • said pin (5) in order to avoid accidental or unwanted decoupling of said pin (5), it is flush with the head (4) on one of the faces thereof, and occupies the bosom of a recess (11 ) of the other side of said head, so that it is accessible without protruding outside, said pin also having a tiny retractable ball (12) against the tension of a spring, through which it is locked in normal situation of work.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)

Abstract

The invention relates to a cutting nippers for plastic tubes, comprising two shear-type arms hinged together by means of a shaft (3). According to the invention, the wider outer arm (2) receives a removable first pin (5) close to the aforementioned pivot shaft (3), said pin serving as a rotation shaft for the blade (6) which is also connected to the other arm (1) by means of a tilting roller or a second pin (9) provided on same. Said roller moves in a long groove or hole (10) which is provided in the blade and which is open at the inner end thereof. In this way, the blade can be replaced very quickly and easily simply by removing the first pin (5) so that the blade (6) is freed and can move until the roller associated with the second pin (9) is disengaged from the groove (10).

Description

TENAZA DE CORTE PARA TUBOS DE PLÁSTICO CUTTING CLAMP FOR PLASTIC PIPES
D E S C R I P C I Ó ND E S C R I P C I Ó N
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se refiere a una tenaza de corte, que ha sido especialmente concebida para tubos de plástico, tales como tubos de PVC, PP, PX, etc, así como para tubos multicapa y similares.The present invention relates to a cutting pliers, which has been specially designed for plastic pipes, such as PVC, PP, PX, etc. tubes, as well as for multilayer pipes and the like.
El objeto de la invención es conseguir una tenaza que, además de ser estructuralmente muy simple, de fácil montaje y consecuentemente económica, permite una también muy fácil sustitución de su cuchilla sin necesidad de desmontar la tenaza, concretamente mediante la extracción de un pasador.The object of the invention is to achieve a pincer which, in addition to being structurally very simple, easy to assemble and consequently economical, allows a very easy replacement of its blade without the need to disassemble the pincer, specifically by removing a pin.
La invención se sitúa pues en el ámbito de las herramientas de corte para tubos de plástico.The invention thus falls within the scope of cutting tools for plastic pipes.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
Son conocidas tenazas para corte de tubos de plástico a base de dos brazos articulados, tipo tijera, a uno de los cuales es solidaria lateralmente una cuchilla que en el cierre de la tenaza y con interposición del correspondiente tubo, avanza hacia una sufridera existente en el otro brazo, produciendo el corte.Pliers are known for cutting plastic tubes based on two articulated arms, scissor type, to one of which a blade is joined laterally that in the closing of the pliers and with interposition of the corresponding tube, advances towards an existing bearing in the another arm, producing the cut.
Este tipo de tenaza presenta una problemática con una doble vertiente, por un lado la cuchilla permanece siempre en situación de directa accesibilidad, lo que supone un permanente riesgo de accidente por corte, y por otro lado la cuchilla está rígidamente unida al brazo correspondiente con la colaboración de una pareja de tornillos, lo que supone una tarea lenta de sustitución de la cuchilla, ya que es preciso desmontar los citados tornillos, extraer la cuchilla usada, colocar la cuchilla nueva y montar y apretar de nuevo los citados tornillos.This type of pliers presents a problem with a double slope, on the one hand the blade always remains in a direct situation accessibility, which implies a permanent risk of accident by cutting, and on the other hand the blade is rigidly attached to the corresponding arm with the collaboration of a pair of screws, which is a slow task of replacing the blade, since it is necessary remove the aforementioned screws, remove the used blade, place the new blade and assemble and tighten the aforementioned screws.
Parte de la problemática anteriormente citada, concretamente el aspecto de seguridad, se resuelve con otro tipo de tenaza ofertada al mercado, en la que la cuchilla se mantiene retraída hacia el interior de la carcasa de la tenaza, en situación operante de la misma, al menos en lo que a su filo cortante se refiere, de manera que el contacto accidental con dicho filo resulta prácticamente imposible.Part of the aforementioned problem, specifically the security aspect, is solved with another type of pliers offered to the market, in which the blade is held back towards the inside of the clamp housing, in its operating position, by less as far as its cutting edge is concerned, so that accidental contact with said cutting edge is practically impossible.
Sin embargo esta tenaza sigue manteniendo la problemática anteriormente citada en cuanto a la complejidad de las maniobras de sustitución de la cuchilla, problemática que no solo se mantiene sino que se incrementa, puesto que además de tener que desmontar la cuchilla de uno de los brazos citados, se hace preciso desmontar las dos piezas que integran el otro brazo de la tenaza.However, this pincer continues to maintain the aforementioned problem regarding the complexity of the knife replacement maneuvers, a problem that not only remains but is increased, since in addition to having to disassemble the blade of one of the aforementioned arms , it is necessary to disassemble the two pieces that make up the other arm of the pliers.
DESCRIPCIÓN DE LA INVENCIÓNDESCRIPTION OF THE INVENTION
La tenaza de corte para tubos de plástico que la invención propone resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta, en los dos aspectos comentados, de manera que además de mantener su cuchilla retraída en situación inoperante, permite un fácil y rápido desmontaje/montaje para sustitución de la cuchilla, sin necesidad de desmontar ninguno de los brazos de la tijera, sin necesidad de actuar sobre ningún tornillo, exclusivamente extrayendo un pasador, como anteriormente se ha dicho, maniobra que evidentemente resulta sumamente rápida y sencilla.The cutting pliers for plastic tubes proposed by the invention fully and satisfactorily solve the problems described above, in the two aspects mentioned, so that in addition to keeping your blade retracted in an inoperative situation, it allows an easy and rapid disassembly / assembly for blade replacement, no need to disassemble any of the scissor arms, no need to act on no screw, exclusively removing a pin, as previously mentioned, maneuver that is obviously extremely fast and simple.
Para ello de forma mas concreta la tenaza que se preconiza es del tipo de las que están constituidas mediante dos brazos unidos entre si a través de una articulación tipo tijera, una de cuyas peculiaridades es que cada uno de dichos brazos es monopieza, de manera que su montaje se ve simplificado, concretamente reducido al acoplamiento entre ambas piezas en posición adecuada para que éstas queden relacionadas por su propio eje de basculación.To do this in a more concrete way, the clamp that is recommended is of the type that are constituted by two arms joined together by means of a scissor joint, one of whose peculiarities is that each of said arms is single-piece, so that its assembly is simplified, specifically reduced to the coupling between both pieces in a suitable position so that they are related by its own tilt axis.
Uno de dichos brazos incorpora una ventana en correspondencia con su plano medio, a través de la que penetra parcialmente en su interior el otro brazo.One of said arms incorporates a window in correspondence with its middle plane, through which the other arm partially penetrates inside.
En el brazo exterior se establece un pasador en funciones de eje de basculación para la cuchilla, y en contraposición a la citada ventana el brazo exterior incorpora una ranura a través de la que es susceptible de emerger la citada cuchilla cuando se cierra la tenaza.In the outer arm a pin is established as a tilting axis for the blade, and in contrast to said window the outer arm incorporates a groove through which said blade is susceptible to emerge when the pliers are closed.
La cuchilla es además basculante sobre un segundo pasador, a través de un rodillo que gira sobre dicho pasador, pero con la especial particularidad de que el basculamiento de la cuchilla con respecto a dicho rodillo se realiza a través de una ranura abierta hacia uno de los bordes de la cuchilla, de manera que el eje de basculación de los brazos de la tijera y los dos pasadores citados, configuran un triangulo deformable que confiere a la cuchilla un movimiento planetario, concretamente un movimiento combinado de traslación y giro hacia la sufridera de corte definida en el brazo exterior.The blade is also tiltable on a second pin, through a roller that rotates on said pin, but with the particular feature that the tilting of the blade with respect to said roller is carried out through an open groove towards one of the edges of the blade, so that the tilting axis of the scissor arms and the two aforementioned pins, form a deformable triangle that gives the blade a planetary movement, specifically a combined movement of translation and rotation towards the cutting edge defined on the outer arm.
El carácter abierto de la citada ranura de la cuchilla permite que, extrayendo el pasador de giro o basculación para la misma, dicha cuchilla pueda ser fácilmente extraída de la tenaza para su sustitución.The openness of the aforementioned blade groove allows that, by removing the pivot or pivot pin for it, said blade can easily be removed from the pliers for replacement.
DESCRIPCIÓN DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. In an illustrative and non-limiting manner, the following has been represented:
La figura L- Muestra según una vista en planta, una tenaza de corte para tubos de plástico realizada de acuerdo con el objeto de la presente invención, en situación inoperante para la misma.Figure L- Shows, according to a plan view, a cutting pliers for plastic pipes made in accordance with the object of the present invention, in an inoperative situation therefor.
La figura 2.- Muestra una representación similar a la figura anterior de la misma tenaza, ahora en situación de apertura máxima.Figure 2.- Shows a representation similar to the previous figure of the same pincer, now in a situation of maximum opening.
La figura 3.- Muestra una similar a la de la figura 2, pero en la que los brazos se han representado de forma transparente para permitir visualizar la estructura interna de la tenaza.Figure 3 shows a similar to that of Figure 2, but in which the arms have been represented transparently to allow visualizing the internal structure of the pliers.
La figura 4.- Muestra un detalle en planta de la cuchilla.Figure 4.- Shows a detail in plan of the blade.
La figura 5.- Muestra, finalmente, una representación en alzado lateral del pasador en funciones de eje de basculación para la cuchilla.Figure 5.- Shows, finally, a representation in side elevation of the pin in function of tilting axis for the blade.
REALIZACIÓN PREFERENTE DE LA INVENCIÓN A la vista de las figuras reseñadas puede observarse como la tenaza de corte que la invención propone está constituida a partir de dos brazos (1 y 2), unidos articuladamente entre sí a través de un pasador (3), determinando una articulación tipo tijera, adoptando el brazo (1) una configuración acanalada en toda su extensión, de concavidad orientada hacia dentro, para minimizar la cantidad de material que participa en el mismo, mientras que el brazo (2), también acanalado en su mitad correspondiente a su empuñadura, se remata en un cabezal (4) que en su zona media incorpora un pasador (5) en funciones de eje de basculación para la cuchilla (6), que está dotada a su vez de un orificio (7) para acceso del citado pasador (5), siendo dicho cabezal hueco y abierto hacia el borde interno del propio brazo (2), en una magnitud suficiente como para permitir tanto el juego de la extremidad correspondiente del primer brazo (1), a través del eje (3), como la basculación de la cuchilla (6) durante la maniobra de corte, cuchilla que emerge hacia el borde externo del brazo (2), concretamente hacia la clásica cámara de asentamiento del tubo, a través de una ranura (8) situada en correspondencia con su plano medio.PREFERRED EMBODIMENT OF THE INVENTION In view of the aforementioned figures, it can be seen how the cutting pliers that the invention proposes are constituted from two arms (1 and 2), articulated jointly with each other through a pin (3), determining a scissor joint, adopting the arm (1) a ribbed configuration in all its extension, with inwardly oriented concavity, to minimize the amount of material that participates in it, while the arm (2), also grooved in its half corresponding to its handle, It is finished off in a head (4) that in its middle area incorporates a pin (5) in function of tilting axis for the blade (6), which is in turn provided with a hole (7) for access of said pin ( 5), said head being hollow and open towards the inner edge of the arm itself (2), in a sufficient magnitude to allow both the play of the corresponding limb of the first arm (1), through the axis (3), as blade tilting (6) during the cutting maneuver, a blade that emerges towards the outer edge of the arm (2), specifically towards the classic tube settling chamber, through a slot (8) located in correspondence with its middle plane.
En el brazo (1), el que bascula en el seno del brazo (2), se establece además otro pasador (9) que actúa como eje de giro para un rodillo el cual juega en el seno de la ranura alargada y abierta (10) de que está provista la cuchilla (6), de manera que durante la maniobra de basculación de la cuchilla se produce un desplazamiento relativo entre ésta última y el rodillo asociado al pasador (9), a lo largo de dicha ranura (10).In the arm (1), the one that tilts in the bosom of the arm (2), another pin (9) is also established that acts as a rotation axis for a roller which plays within the elongated and open groove (10 ) that the blade (6) is provided, so that during the tilting maneuver of the blade there is a relative displacement between the latter and the roller associated with the pin (9), along said groove (10).
Esto es debido a que, como se observa perfectamente en la figuraThis is because, as seen perfectly in the figure
2, el eje de basculación (3) de ambos brazos, el pasador (5) de basculación para la cuchilla (6) y el conjunto pasador (9) y el correspondiente rodillo asociado al mismo, forman un triangulo deformable que fuerza a la cuchilla a bascular, mientras que gira, para que el ataque sobre el tubo a cortar se produzca en todo momento en la dirección mas idónea.2, the tilt axis (3) of both arms, the tilt pin (5) for the blade (6) and the pin assembly (9) and the corresponding roller associated therewith, form a deformable triangle that forces the blade to swing, while turning, so that the attack on the tube to be cut occurs at all times in the most suitable direction.
El carácter desmontable del pasador (5) en funciones de eje de basculación para la cuchilla, y el carácter abierto de la ranura (10) en la que juega el rodillo asociado al pasador (9), permiten que extrayendo dicho pasador móvil (5) la cuchilla pueda ser fácilmente extraída para su recambio, sin mas que traccionar del extremo interno de la misma, es decir del extremo correspondiente al fondo cerrado de la ranura (10).The detachable character of the pin (5) acting as a tilting axis for the blade, and the open character of the groove (10) in which the roller associated with the pin (9) plays, allow the removal of said movable pin (5) The blade can be easily removed for replacement, without pulling the internal end of it, that is, the end corresponding to the closed bottom of the groove (10).
Solo resta señalar por último que, al objeto de evitar el desacoplamiento accidental o no deseado del citado pasador (5), este queda enrasado con el cabezal (4) en una de las caras del mismo, y ocupa el seno de un rehundido (11) de la otra cara de dicho cabezal, de manera que resulta accesible sin sobresalir al exterior, contando además dicho pasador con una diminuta bola (12) retráctil en contra de la tensión de un resorte, a través de la que queda bloqueado en situación normal de trabajo.It only remains to note finally that, in order to avoid accidental or unwanted decoupling of said pin (5), it is flush with the head (4) on one of the faces thereof, and occupies the bosom of a recess (11 ) of the other side of said head, so that it is accessible without protruding outside, said pin also having a tiny retractable ball (12) against the tension of a spring, through which it is locked in normal situation of work.
Por lo demás y como es convencional, entre los dos brazos de la tenaza, concretamente montado sobre el eje (3) de basculación de los mismos, se sitúa un muelle (13) que tiende a la apertura automática de dicha tenaza, la cual se mantiene en situación de cierre con la colaboración de un gancho basculante (14) situado a nivel de la extremidad libre de los asideros definidos por los dos brazos de la tenaza. For the rest and as is conventional, between the two arms of the pliers, specifically mounted on the axis (3) of their tilting, there is a spring (13) that tends to the automatic opening of said pliers, which is it keeps in a closed situation with the collaboration of a tilting hook (14) located at the level of the free end of the handles defined by the two arms of the pliers.

Claims

R E I V I N D I C A C I O N E S R E I V I N D I C A C I O N E S
Ia.- Tenaza de corte para tubos de plástico, del tipo de las que incorporan dos brazos unidos entre sí a través de una articulación tipo tijera, de manera que uno de dichos brazos penetra en el interior hueco del otro en un punto en el que se establece el eje de basculación para los mismos, y en los que el brazo interior actúa sobre una cuchilla susceptible de emerger a través del otro brazo en la zona contrapuesta del mismo, aquella en la que se define la cama o asentamiento para el tubo a cortar, caracterizada porque la cuchilla (6), que incorpora un orificio (7) para giro de la misma, está montada en el seno del brazo exterior (2) con la colaboración de un pasador extraíble (5), situado en las proximidades del eje de basculación (3) entre ambos brazos, incorporando dicha cuchilla (5) una ranura (10) considerablemente alargada y abierta al exterior, en la que juega un rodillo asociado a otro pasador (9), en este caso fijo, establecido en el cuerpo acanalado del brazo interior (1), todo ello de forma que el eje de basculación (3) de ambos brazos, el pasador (5) de basculación de la cuchilla y el pasador (9) del brazo interior, definen un triangulo deformable que determina a su vez para la cuchilla un movimiento combinado de giro y basculación durante la maniobra de cierre de la tenaza, siendo además la cuchilla extraíble de la tenaza sin mas que retirar el citado pasador (5) en funciones de eje de basculación para la misma.I a .- Cutting pliers for plastic pipes, of the type of which incorporate two arms connected to each other through a scissor joint, so that one of these arms penetrates into the hollow interior of the other at a point in the that the axis of tilt is established for them, and in which the inner arm acts on a blade capable of emerging through the other arm in the opposite area of the same, that in which the bed or settlement for the tube is defined to be cut, characterized in that the blade (6), which incorporates a hole (7) for rotation thereof, is mounted inside the outer arm (2) with the collaboration of a removable pin (5), located in the vicinity of the tilt shaft (3) between both arms, said blade (5) incorporating a slot (10) considerably elongated and open to the outside, in which a roller associated with another pin (9) plays, in this case fixed, established in the ribbed body of the int arm upper (1), all this in such a way that the tilt axis (3) of both arms, the blade tilt pin (5) and the pin (9) of the inner arm, define a deformable triangle which in turn determines for the blade a combined movement of rotation and tilt during the clamp closing maneuver, the removable blade of the clamp being also no more than removing said pin (5) in terms of tilt axis thereof.
2a,- Tenaza de corte para tubos de plástico, según reivindicación 1, caracterizada porque el pasador (5) constitutivo del medio de basculación y retención para la cuchilla (6) queda enrasado por uno de sus extremos con una de las caras del brazo exterior (2), mientras que su otro extremo se sitúa en el fondo de un rehundido (11) de dicho brazo, con respecto a cuyo fondo se bloquea con carácter practicable, con la colaboración de una pequeña bola (12) retráctil en contra de la tensión de un muelle. 3a.- Tenaza de corte para tubos de plástico, según reivindicaciones anteriores, caracterizada porque los brazos (1 y 2) de la misma tienden a la posición límite de apertura por efecto de un muelle (13) montado sobre el propio eje (3) de basculación de dichos brazos. 2 a , - Cutting pliers for plastic tubes, according to claim 1, characterized in that the pin (5) constituting the tilting and retention means for the blade (6) is flush at one of its ends with one of the arm faces exterior (2), while its other end is located at the bottom of a recess (11) of said arm, with respect to whose bottom it is locked with practicable character, with the collaboration of a small retractable ball (12) against The tension of a spring. 3 .- cutting pliers for plastic pipes, according to previous claims, characterized in that the arms (1 and 2) thereof tend to limit opening position by a return spring (13) mounted on the shaft itself (3 ) of tilting of said arms.
PCT/ES2009/000125 2009-03-09 2009-03-09 Cutting nippers for plastic tubes WO2010119143A1 (en)

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PCT/ES2009/000125 WO2010119143A1 (en) 2009-03-09 2009-03-09 Cutting nippers for plastic tubes

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190098280A (en) * 2018-02-12 2019-08-22 이성래 Reinforcement rib removing device of panel for channel signbord

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US107542A (en) * 1870-09-20 Improvement in prtjning-knives
US615956A (en) * 1898-12-13 Bolt-clipper
US3273238A (en) * 1964-12-10 1966-09-20 Kuhbier Carl Pliers having a camming lever member trapped between jaw members
GB1450368A (en) * 1975-04-01 1976-09-22 Cooper Sons Ltd John Cutting implement
US4674184A (en) * 1986-03-13 1987-06-23 Milbar Corporation Cutting tool for synthetic resin tubes
US5020222A (en) * 1987-02-10 1991-06-04 Fiskars Oy Ab Variable force compound action leverage tool
US20080141538A1 (en) * 2006-12-15 2008-06-19 Emerson Electric Co. Tubing cutter
GB2444912A (en) * 2006-12-19 2008-06-25 Ho Cheng Garden Tools Co Ltd Shears including adjusting slot and drive arms having eccentric pivot bores
US20080307657A1 (en) * 2007-06-14 2008-12-18 Emerson Electric Co. Ratcheting hand tool with easily replaceable cutting blade

Patent Citations (9)

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Publication number Priority date Publication date Assignee Title
US107542A (en) * 1870-09-20 Improvement in prtjning-knives
US615956A (en) * 1898-12-13 Bolt-clipper
US3273238A (en) * 1964-12-10 1966-09-20 Kuhbier Carl Pliers having a camming lever member trapped between jaw members
GB1450368A (en) * 1975-04-01 1976-09-22 Cooper Sons Ltd John Cutting implement
US4674184A (en) * 1986-03-13 1987-06-23 Milbar Corporation Cutting tool for synthetic resin tubes
US5020222A (en) * 1987-02-10 1991-06-04 Fiskars Oy Ab Variable force compound action leverage tool
US20080141538A1 (en) * 2006-12-15 2008-06-19 Emerson Electric Co. Tubing cutter
GB2444912A (en) * 2006-12-19 2008-06-25 Ho Cheng Garden Tools Co Ltd Shears including adjusting slot and drive arms having eccentric pivot bores
US20080307657A1 (en) * 2007-06-14 2008-12-18 Emerson Electric Co. Ratcheting hand tool with easily replaceable cutting blade

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190098280A (en) * 2018-02-12 2019-08-22 이성래 Reinforcement rib removing device of panel for channel signbord
KR102014638B1 (en) 2018-02-12 2019-08-27 이성래 Reinforcement rib removing device of panel for channel signbord

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