WO2010026271A1 - Device for bending flexible pipes and accessory for coupling the same to connectors - Google Patents

Device for bending flexible pipes and accessory for coupling the same to connectors Download PDF

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Publication number
WO2010026271A1
WO2010026271A1 PCT/ES2009/000440 ES2009000440W WO2010026271A1 WO 2010026271 A1 WO2010026271 A1 WO 2010026271A1 ES 2009000440 W ES2009000440 W ES 2009000440W WO 2010026271 A1 WO2010026271 A1 WO 2010026271A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular
fitting
accessory
jaw
carriage
Prior art date
Application number
PCT/ES2009/000440
Other languages
Spanish (es)
French (fr)
Inventor
Ricardo Padilla Ros
Original Assignee
Ricardo Padilla Ros
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
Priority claimed from ES200801820U external-priority patent/ES1068701Y/en
Priority claimed from ES200901293U external-priority patent/ES1071059Y/en
Application filed by Ricardo Padilla Ros filed Critical Ricardo Padilla Ros
Publication of WO2010026271A1 publication Critical patent/WO2010026271A1/en

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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
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material

Definitions

  • the present invention relates to a device for bending elastic tubes, such as polyamide tubes, of those commonly used for the transport and conduction of fuel or lubricant in vehicles.
  • the device covered by the invention is intended to bend elastic tubes, such as polyamide tubes.
  • the device for bending elastic tubes comprises at least one outer shell, essentially rigid, tubular and plastically deformable, whose diameter inside is greater than the outer diameter of the elastic tube to be curved, so that the elastic tube to be curved is capable of being introduced inside said external envelope, also including an internal filiform element wound in a spiral, elastically deformable and adapted to be introduced in the elastic tube to deform.
  • this device it is possible to bend cold elastic tubes without the need to apply heat to the tubes so that the desired curve is maintained.
  • the deformable filiform element by means of the deformable filiform element, the non-variation or deformation of the elastic tube to be curved is guaranteed, maintaining its useful internal diameter.
  • the internal filiform element is constituted by a helical spring which is provided with gripping means that facilitate its fastening at at least one of its ends.
  • the device is complemented with an accessory for coupling to said connector ducts, as close to the practiced bending, so that it is constituted from a base body, to which it is integral a fixed jaw, which is faced with a carriage of displacement and support of the fitting in question, which is movable along a series of guides equally in solidarity with the base body, displacement that is carried out with the contest of a threaded pusher rod, associated to the said carriage, manually operable by turning the corresponding knob associated to its rear limb.
  • the jaw is made up of two semi-bodies related to each other by means of the corresponding hinged means, and it presents internally in correspondence with each of said semi-bodies, a longitudinal recess, open at its ends, in which a series of guide accessories can be fitted tightly, which they will have different configurations according to different tube diameters, these being selectively usable depending on the specific needs of each case, accessories in which, in any case, a groove in a half-rod with a straight path will be defined, intended to receive at the end of coupling of the fitting, of a diameter slightly smaller than that of the conduit, in order to ensure its stabilization, counting at its end facing the said carriage with a small widening that facilitates the coupling maneuvers of said fitting, with the particularity that the cited groove in half cane suffers in its opposite limb, or n progressive widening, determinant of a surface of revolution of a generatrix curve, in accordance with the radius of curvature provided for driving.
  • the previously bent conduit is deposited on the formally and dimensionally adequate and established accessories on the corresponding recesses of the two half-bodies of the jaw, in a way that at the closing of the same it subsequently defines a circular window with a strongly rounded edge, with a radius in accordance with the radius of curvature provided for the said bend of the tubular conduit, a tubular conduit that can be arranged with said bend forming any angle with respect to the longitudinal axis of the device according to the needs specific to each case, and the angle that such an angle should form with the fitting, in case it is also at an angle, leaving its free limb facing the one repeatedly commented fitting carriage of fittings, which will have different types of bushings for securing different types of fittings, whether straight, angled, with several outlets, connecting fittings, etc., carrying out the coupling of said fitting to the conduction by displacement of the aforementioned push rod through the actuation of its corresponding knob, so that said coupling is produced in an extremely efficient way
  • Figure 1. Shows, A perspective view of the device for bending elastic tubes object of the invention
  • Fig. 2. Shows a perspective view of a curved elastic tube by using the device of Fig. 1.
  • Figure 3. Shows a perspective view of the fitting for coupling fittings in the curved tubular ducts of the previous figures, a device that appears in an inoperative situation and of opening for its fixed jaw.
  • Figure 4.- Shows a view similar to that of Figure 3, in which the previously bent duct is arranged inside the jaw for subsequent immobilization.
  • Figure 5. Shows a view similar to that of Figures 3 and 4, in which the device appears closed, with the previously curved conduit inserted in its breast and in a position to couple the corresponding fitting to its free end.
  • a device (1) for curving elastic tubes (2) not shown in said figure, of those usually intended for transporting fuel or lubricant, such as polyamide tubes, is shown.
  • Said device (1) comprises a plurality of outer casings (5) for elastic tubes (2) and two internal filiform elements (4) spirally wound.
  • These casings (5) are essentially rigid, tubular and plastically deformable, however the internal filiform elements (4) are elastically deformable and adapted to be able to be introduced into the elastic tubes to bend or deform.
  • the device (1) is used in a very particular way to bend the elastic tube (2), producing a curvature thereof, and so that once the bending operation is finished it is maintained the curve despite the elastic properties of the elastic tube (2) that are evidently counteracted with the only plastic properties of the envelope (5).
  • the elastic tube (2) to be curved which has an outer diameter smaller than that of the envelope (5), is inserted into an envelope (5).
  • the internal filiform element (4) is inserted into the elastic tube (2) and hence the envelope (5).
  • the internal filiform element (4) is constituted by a helical spring whose outer diameter is smaller than the inner diameter of the elastic tube (2) to be curved, so that the helical spring can be introduced into the inside said elastic tube (2).
  • the spring is provided with gripping means that facilitate its fastening at one of its ends.
  • said gripping means are constituted by protuberances.
  • the assembly is folded in order to bend the elastic tube (2).
  • the internal filiform element (4) is removed and the elastic tube (2) is kept curved thanks to the external envelope (5) applied on it.
  • the device (1) can be arranged in a wrapper (3) of easy commercialization and distribution provided with multiple envelopes (5).
  • the device is complemented with an accessory for coupling of fittings, which is constituted, as can be seen in figures 3 to 5, from a base body, obtained from a pair of plates, an anterior plate (6), and a posterior plate (7), arranged in parallel, between which a pair of guides (8) is established a along which a carriage (9) carrying racks is movable, with a threaded rod (10) associated with its rear end, and finished off in a drive knob (11), a rod that will thread over a complementary hole established on the back plate (7).
  • an accessory for coupling of fittings which is constituted, as can be seen in figures 3 to 5, from a base body, obtained from a pair of plates, an anterior plate (6), and a posterior plate (7), arranged in parallel, between which a pair of guides (8) is established a along which a carriage (9) carrying racks is movable, with a threaded rod (10) associated with its rear end, and finished off in a drive knob (11), a rod that will thread over
  • Said carriage incorporates a groove (12) formally and dimensionally suitable to receive within it the different fittings (13), adjustable in an adapter element (14), fittings intended to be coupled in the conduit or elastic tube (2), incorporating the front plate (6), in correspondence with the aforementioned car, a window (15) formally and dimensionally suitable to allow the passage through the said fitting (13).
  • the device as it incorporates, associated with the anterior end of the base frame, a jaw consisting of two semi-bodies, a fixed lower half-body (14), and a folding upper half-body (15) on the latter, through the corresponding hinge or hinge (16).
  • Both upper and lower semi-bodies (14-15) are made respective upper (17) and lower (18) longitudinal openings, open at their ends, in which they are capable of fitting respective guide accessories, (19) into those that defines a groove in half rod with a straight path, the device with multiple guide accessories (19) being available depending on the different diameters provided for the tubular duct, presenting in any case, and as a common denominator, the incorporation of a small diametral widening (20) in correspondence with the limb intended to be faced with the fitting (13) to facilitate the introduction of the end thereof and corresponding deformation of the conduit in said maneuver, while due to its opposite limb, said groove in half-round has a progressive widening (21) , determinant of a generatrix revolution surface with a radius curve according to the radius of curvature provided for the conduit or flexible tube (2).
  • said progressive widening (21) allows the previously curved conduction by means of the spiral wound element (4) previously mentioned to adopt the proper position in the assembly, although said maneuver can also be carried out with the straight conduction within the device itself, using the curved surface of the guide accessories (19) so that the conduit adapts to said radius of curvature, all this, logically prior to the carriage displacement (9) and consequent coupling of the fitting (13) in the conduction.
  • the guide accessories (19) are immobilized with respect to the respective fixed and movable jaw housings through two captive screws (22), as can be observe in figure 5.
  • the upper body (15) of the jaw will be stabilized with respect to the lower body (14), by means of a screw that can be operated through the corresponding control (23), which is tiltable with respect to the previous plate (6) through a tilt axis (24), and which is coupled to a "U" recess (25) established on the side edge of the upper body of the housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The device comprises at least one external casing (5), essentially rigid, tubular and plastically deformable, the internal diameter whereof exceeds the external diameter of the flexible pipe to be bent, such that the flexible pipe to be bent may be introduced into the interior of said external casing, and an internal filiform element (4) spiral-wound, elastically deformable and shaped for introduction into the flexible pipe to be deformed. In a complementary manner, and for the purpose of realising the coupling of different types of connector to the mouth of the free extremity of the tubular conduit once bent, the device includes an accessory based on a basic body with a manually displaceable slide carrying the connector, which slide faces a clamp constituted by a fixed lower half-body and a lowerable upper half-body incorporating respective slots wherein respective guide accessories may be fitted, guide accessories wherein is defined semi-circular channelling which at the extremity opposed to that facing the connector presents progressive enlargement determining a surface of revolution of curved generatrix, of radius in accordance with the radius of curvature intended for the piping.

Description

DISPOSITIVO PARA CURVAR TUBOS ELÁSTICOS Y ACCESORIO PARA ACOPLAMIENTO A LOS MISMOS DE DEVICE FOR CURVING ELASTIC TUBES AND ACCESSORY FOR COUPLING TO THE SAME OF
RACORESFITTINGS
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 un dispositivo para curvar tubos elásticos, tales como tubos de poliamida, de los habitualmente utilizados para el transporte y conducción de combustible o lubricante en los vehículos.The present invention relates to a device for bending elastic tubes, such as polyamide tubes, of those commonly used for the transport and conduction of fuel or lubricant in vehicles.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
Actualmente, son conocidos distintos métodos para realizar el curvado de tubos o conductos de materiales más o menos rígidos, como por ejemplo mediante la utilización de artilugios que doblan por fuerza mecánica el tubo.Currently, different methods are known for curving tubes or conduits of more or less rigid materials, such as by using gadgets that mechanically bend the tube.
A diferencia de este tipo de curvadores, para curvar tubos elásticos tales como los tubos de poliamida, en los cuales cuando se deja de aplicar una fuerza retornan elásticamente a su posición inicial, se realiza habitualmente un calentamiento del tubo que tiene como objeto modificar sus propiedades elásticas y evitar que vuelva a su posición anterior. Para realizar el curvado por calentamiento se coloca el tubo a curvar en una base y se le aplica calor durante un determinado tiempo. Evidentemente, para realizar las curvas en este tipo de tubos, se requieren complejas y engorrosas máquinas, que no son rentables para utilizaciones esporádicas como las realizadas en talleres de automoción.Unlike this type of bending machine, for bending elastic tubes such as polyamide tubes, in which when a force is stopped applying elastically they return to their initial position, a heating of the tube is usually carried out whose purpose is to modify its properties elastic and prevent it from returning to its previous position. To make the heating bending, the tube to be curved is placed on a base and heat is applied for a certain time. Obviously, to make the curves in this type of tubes, complex and cumbersome machines, which are not profitable for sporadic uses such as those carried out in automotive workshops.
Por todo ello, se hace necesaria la existencia de una alternativa a dicho sistema de curvado conocido hasta el momento, que permita a los talleres de automoción curvar ocasionalmente tubos flexibles de forma rápida y económica.For all these reasons, it is necessary to have an alternative to said curving system known so far, which allows automotive workshops to occasionally bend flexible tubes quickly and economically.
Otro problema que surge una vez curvado el tubo, en aquellos casos en los que deba practicarse un acodamiento lo más próximo a la dicho racor, es que acodamiento se ve ligeramente desplazado unos pocos centímetros, ya que el extremo del racor que se introduce en el seno del tubo rigidiza la zona próxima al mismo, de manera que o bien dicho acodamiento se realiza a un distanciamiento suficiente de dicho elemento, o bien se corre el riesgo de que la propia presión ejercida en las maniobras de doblado provoque que el racor se desplace ligeramente en sentido exterior, lo que puede provocar su desacoplamiento, con el consiguiente peligro que ello supone, sobretodo si se tiene en cuenta el ámbito de aplicación práctica de la invención, el cual está dirigido principalmente a conductos para distribución de combustibles.Another problem that arises once the tube is curved, in those cases in which an elbowing should be practiced closest to the said fitting, is that the bending is slightly displaced a few centimeters, since the end of the fitting that is introduced into the The sinus of the tube stiffens the area near it, so that said bending is carried out at a sufficient distance from said element, or there is a risk that the pressure exerted in the bending maneuvers causes the fitting to move slightly in the external direction, which can cause its decoupling, with the consequent danger that this entails, especially if the practical scope of the invention is taken into account, which is mainly directed to conduits for fuel distribution.
DESCRIPCIÓN DE LA INVENCIÓNDESCRIPTION OF THE INVENTION
El dispositivo de que trata la invención está destinado para curvar tubos elásticos, tales como tubos de poliamida.The device covered by the invention is intended to bend elastic tubes, such as polyamide tubes.
En esencia, el dispositivo para curvar tubos elásticos se caracteriza porque comprende al menos una envoltura externa, esencialmente rígida, tubular y plásticamente deformable, cuyo diámetro interior es mayor que el diámetro exterior del tubo elástico a curvar, de modo que el tubo elástico a curvar es susceptible de ser introducido en el interior de dicha envoltura externa, incluyendo asimismo un elemento filiforme interno arrollado en espiral, deformable elásticamente y adaptado para introducirse en el tubo elástico a deformar.In essence, the device for bending elastic tubes is characterized in that it comprises at least one outer shell, essentially rigid, tubular and plastically deformable, whose diameter inside is greater than the outer diameter of the elastic tube to be curved, so that the elastic tube to be curved is capable of being introduced inside said external envelope, also including an internal filiform element wound in a spiral, elastically deformable and adapted to be introduced in the elastic tube to deform.
Ventajosamente, con este dispositivo se consigue curvar tubos elásticos en frío sin necesidad de aplicar calor a los tubos para que se mantenga la curva deseada. Además, mediante el elemento filiforme deformable se garantiza la no variación o deformación del tubo elástico a curvar manteniéndose su diámetro interior útil.Advantageously, with this device it is possible to bend cold elastic tubes without the need to apply heat to the tubes so that the desired curve is maintained. In addition, by means of the deformable filiform element, the non-variation or deformation of the elastic tube to be curved is guaranteed, maintaining its useful internal diameter.
De acuerdo con una forma de realización preferida, el elemento filiforme interno está constituido por un muelle helicoidal que está provisto de unos medios de asido que facilitan su sujeción en al menos uno de sus extremos.According to a preferred embodiment, the internal filiform element is constituted by a helical spring which is provided with gripping means that facilitate its fastening at at least one of its ends.
Como complemento de la estructura descrita, se ha previsto que el dispositivo se complemente con un accesorio para acoplamiento a dichos conductos de racores, lo más próximos al acodamiento practicado, de manera que el mismo está constituidoa partir de un cuerpo base, al que es solidario una mordaza fija, a la cual queda enfrentada un carro de desplazamiento y sujeción del racor de que se trate, el cual es desplazable a lo largo de una serie de guías igualmente solidarias al cuerpo base, desplazamiento que se lleva a cabo con el concurso de un vastago empujador roscado, asociado al comentado carro, accionable manualmente mediante giro del correspondiente pomo asociado a su extremidad posterior.As a complement to the structure described, it is provided that the device is complemented with an accessory for coupling to said connector ducts, as close to the practiced bending, so that it is constituted from a base body, to which it is integral a fixed jaw, which is faced with a carriage of displacement and support of the fitting in question, which is movable along a series of guides equally in solidarity with the base body, displacement that is carried out with the contest of a threaded pusher rod, associated to the said carriage, manually operable by turning the corresponding knob associated to its rear limb.
La mordaza, está constituida a partir de dos semi-cuerpos relacionados entre sí mediante los correspondientes medios de abisagramiento, y presenta internamente en correspondencia con cada uno de los citados semi-cuerpos, un cajeado longitudinal, abierto por sus extremos, en el que son susceptibles de acoplarse ajustadamente una serie de accesorios guía, los cuales presentarán diferentes configuraciones acordes a distintos diámetros de tubos, siendo estos utilizables selectivamente en función de las necesidades específicas de cada caso, accesorios en los que, en cualquier caso, se definirá una acanaladura en media caña de trayectoria recta, destinada a recibir al extremo de acoplamiento del racor, de diámetro ligeramente menor que el del conducto, en orden a asegurar la estabilización del mismo, contando en su extremidad enfrentada al citado carro con un pequeño ensanchamiento que facilite las maniobras de acoplamiento de dicho racor, con la particularidad de que la citada acanaladura en media caña sufre en su extremidad opuesta, un ensanchamiento progresivo, determinante de una superficie de revolución de generatriz curva, acorde con el radio de curvatura previsto para la conducción.The jaw is made up of two semi-bodies related to each other by means of the corresponding hinged means, and it presents internally in correspondence with each of said semi-bodies, a longitudinal recess, open at its ends, in which a series of guide accessories can be fitted tightly, which they will have different configurations according to different tube diameters, these being selectively usable depending on the specific needs of each case, accessories in which, in any case, a groove in a half-rod with a straight path will be defined, intended to receive at the end of coupling of the fitting, of a diameter slightly smaller than that of the conduit, in order to ensure its stabilization, counting at its end facing the said carriage with a small widening that facilitates the coupling maneuvers of said fitting, with the particularity that the cited groove in half cane suffers in its opposite limb, or n progressive widening, determinant of a surface of revolution of a generatrix curve, in accordance with the radius of curvature provided for driving.
Así pues, y a partir de la estructuración anteriormente descrita, la conducción previamente doblada se deposita sobre los accesorios formal y dimensionalmente adecuados y establecidos sobre los correspondientes cajeados de los dos semi-cuerpos de la mordaza, de maneara que en el cierre de la misma se define posteriormente una ventana circular de arista fuertemente redondeada, de radio acorde con el radio de curvatura previsto para el citado acodamiento del conducto tubular, conducto tubular que podrá disponerse con dicho acodamiento formando cualquier ángulo con respecto al eje longitudinal del dispositivo en función de las necesidades específicas de cada caso, y del ángulo que deba formar dicho acodamiento con el racor, en caso de que éste también sea en ángulo, quedando su extremidad libre enfrentada al repetidamente comentado carro portador de racores, el cual dispondrá de diferentes tipos de casquillos para sujeción de diferentes tipos de racores, ya sean rectos, acodados, con varias salidas, racores de unión, etc, llevándose a cabo el acoplamiento de dicho racor a la conducción mediante desplazamiento del citado vastago empujador a través del accionamiento de su correspondiente pomo, de manera que dicho acoplamiento se produce de forma sumamente eficaz, al permitir que el acodamiento practicado en el conducto se aproxime lo máximo posible al racor, sin riesgo que de éste pueda desacoplarse accidentalmente, puesto que las maniobras de doblado del conducto ya han sido previamente realizadas.Thus, and from the previously described structuring, the previously bent conduit is deposited on the formally and dimensionally adequate and established accessories on the corresponding recesses of the two half-bodies of the jaw, in a way that at the closing of the same it subsequently defines a circular window with a strongly rounded edge, with a radius in accordance with the radius of curvature provided for the said bend of the tubular conduit, a tubular conduit that can be arranged with said bend forming any angle with respect to the longitudinal axis of the device according to the needs specific to each case, and the angle that such an angle should form with the fitting, in case it is also at an angle, leaving its free limb facing the one repeatedly commented fitting carriage of fittings, which will have different types of bushings for securing different types of fittings, whether straight, angled, with several outlets, connecting fittings, etc., carrying out the coupling of said fitting to the conduction by displacement of the aforementioned push rod through the actuation of its corresponding knob, so that said coupling is produced in an extremely efficient way, by allowing the bending practiced in the duct to be as close as possible to the fitting, without risk of accidentally decoupling from it. , since the duct bending maneuvers have been previously performed.
DESCRIPCIÓN DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS
Para complementar la descripción que seguidamente se va a realizar 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 will then be made and in order to help a better understanding of the features 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. where, for illustrative and non-limiting purposes, the following has been represented:
La figura 1.- Muestra, Una vista en perspectiva del dispositivo para curvar tubos elásticos objeto de la invención;Figure 1.- Shows, A perspective view of the device for bending elastic tubes object of the invention;
La Fig. 2.- Muestra una vista en perspectiva de un tubo elástico curvado mediante la utilización del dispositivo de la Fig. 1.Fig. 2.- Shows a perspective view of a curved elastic tube by using the device of Fig. 1.
La figura 3.- Muestra una vista en perspectiva del accesorio para el acoplamiento de racores en los conductos tubulares curvados de las figuras anteriores, dispositivo que aparece en situación inoperante y de apertura para su mordaza fija.Figure 3.- Shows a perspective view of the fitting for coupling fittings in the curved tubular ducts of the previous figures, a device that appears in an inoperative situation and of opening for its fixed jaw.
La figura 4.- Muestra una vista similar a la de la figura 3, en la que el conducto previamente doblado queda dispuesto en el seno de la mordaza para su posterior inmovilización.Figure 4.- Shows a view similar to that of Figure 3, in which the previously bent duct is arranged inside the jaw for subsequent immobilization.
La figura 5.- Muestra una vista similar a la de las figuras 3 y 4, en la que el dispositivo aparece cerrado, con la conducción previamente curvada introducida en su seno y en disposición de acoplar el correspondiente racor a su extremidad libre.Figure 5.- Shows a view similar to that of Figures 3 and 4, in which the device appears closed, with the previously curved conduit inserted in its breast and in a position to couple the corresponding fitting to its free end.
REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION
En la Fig. 1 se representa un dispositivo (1) para curvar tubos elásticos (2), no representado en dicha figura, de los habitualmente destinados al transporte de combustible o lubricante, como tubos de poliamida. Dicho dispositivo (1) comprende una pluralidad de envolturas (5) externas para tubos elásticos (2) y dos elementos filiformes internos (4) arrollados en espiral. Estas envolturas (5) son esencialmente rígidas, de forma tubular y plásticamente deformables, en cambio los elementos filiformes internos (4) son deformables elásticamente y están adaptados para poder ser introducidos en los tubos elásticos a curvar o deformar.In Fig. 1 a device (1) for curving elastic tubes (2), not shown in said figure, of those usually intended for transporting fuel or lubricant, such as polyamide tubes, is shown. Said device (1) comprises a plurality of outer casings (5) for elastic tubes (2) and two internal filiform elements (4) spirally wound. These casings (5) are essentially rigid, tubular and plastically deformable, however the internal filiform elements (4) are elastically deformable and adapted to be able to be introduced into the elastic tubes to bend or deform.
Tal y como se representa en la Fig. 2, el dispositivo (1) se utiliza de una manera muy particular para doblar el tubo elástico (2), produciéndose una curvatura del mismo, y para que una vez finalizada la operación de curvado se mantenga la curva a pesar de las propiedades elásticas del tubo elástico (2) que se ven evidentemente contrarrestadas con las propiedades únicamente plásticas de la envoltura (5).As shown in Fig. 2, the device (1) is used in a very particular way to bend the elastic tube (2), producing a curvature thereof, and so that once the bending operation is finished it is maintained the curve despite the elastic properties of the elastic tube (2) that are evidently counteracted with the only plastic properties of the envelope (5).
Primero de todo, antes de realizar la operación de curvado con el dispositivo (1), se debe determinar que porción de envoltura (5) externa será necesaria y consecuentemente cortar a medida dicha envoltura (5). A continuación, se introduce el tubo elástico (2) a curvar, que tiene un diámetro exterior menor al de la envoltura (5), en el interior de una envoltura (5). Por otro lado, se introduce el elemento filiforme interno (4) en el interior del tubo elástico (2) y por ende de la envoltura (5).First of all, before performing the bending operation with the device (1), it should be determined what portion of the outer wrap (5) will be necessary and consequently cut said wrap (5). Next, the elastic tube (2) to be curved, which has an outer diameter smaller than that of the envelope (5), is inserted into an envelope (5). On the other hand, the internal filiform element (4) is inserted into the elastic tube (2) and hence the envelope (5).
En el ejemplo representado en las figuras, el elemento filiforme interno (4) está constituido por un muelle helicoidal cuyo diámetro exterior es menor que el diámetro interior del tubo elástico (2) a curvar, de modo que el muelle helicoidal puede ser introducido en el interior de dicho tubo elástico (2). Además, para facilitar la operación de introducción del muelle en el interior del tubo elástico (2), el muelle está provisto de unos medios de asido que facilitan su sujeción en uno de sus extremos. En este caso, dichos medios de asido están constituidos por unas protuberancias.In the example shown in the figures, the internal filiform element (4) is constituted by a helical spring whose outer diameter is smaller than the inner diameter of the elastic tube (2) to be curved, so that the helical spring can be introduced into the inside said elastic tube (2). In addition, to facilitate the operation of introducing the spring into the elastic tube (2), the spring is provided with gripping means that facilitate its fastening at one of its ends. In this case, said gripping means are constituted by protuberances.
Seguidamente y de modo manual, se ejerce el doblado del conjunto con objeto de curvar el tubo elástico (2). Cuando se ha curvado lo deseado, se retira el elemento filiforme interno (4) y el tubo elástico (2) se mantiene curvado gracias a la envoltura (5) externa aplicada sobre él.Then and manually, the assembly is folded in order to bend the elastic tube (2). When the desired has been curved, the internal filiform element (4) is removed and the elastic tube (2) is kept curved thanks to the external envelope (5) applied on it.
En una realización preferente, como la representada en la Fig. 1, el dispositivo (1) puede estar dispuesto en un envoltorio (3) de fácil comercialización y distribución provisto de múltiples envolturas (5).In a preferred embodiment, such as that shown in Fig. 1, the device (1) can be arranged in a wrapper (3) of easy commercialization and distribution provided with multiple envelopes (5).
Además, se prevé que haya más de un elemento filiforme interno (4) de medidas distintas para facilitar la creación de todo tipo de curvaturas, en el ejemplo de la Fig. 1 hay dos elementos filiformes (4), uno corto y otro más largo y dispuesto arrollado en el interior del envoltorio (3). A partir de esta estructuración, a la hora de acoplar un racor en la conducción ya curvada, se ha previsto que el dispositivo se complemente con un accesorio para acoplamiento de racores, el cual está constituido, tal y como se puede observar en las figuras 3 a 5, a patir de un cuerpo base, obtenido a partir de una pareja de pletinas, una pletina anterior (6), y una pletina posterior (7), dispuestas paralelamente, entre las cuales se establece una pareja de guías (8) a lo largo de las cuales es desplazable un carro (9) portador de racores, con en concurso de un vastago roscado (10) asociado a su extremidad posterior, y rematado en un pomo de accionamiento (11), vastago que roscará sobre un orificio complementario establecido en la pletina posterior (7).In addition, it is expected that there will be more than one internal filiform element (4) of different measures to facilitate the creation of all types of curvatures, in the example of Fig. 1 there are two filiform elements (4), one short and one longer and arranged rolled inside the wrapper (3). From this structuring, at the time of coupling a fitting in the already curved conduction, it is provided that the device is complemented with an accessory for coupling of fittings, which is constituted, as can be seen in figures 3 to 5, from a base body, obtained from a pair of plates, an anterior plate (6), and a posterior plate (7), arranged in parallel, between which a pair of guides (8) is established a along which a carriage (9) carrying racks is movable, with a threaded rod (10) associated with its rear end, and finished off in a drive knob (11), a rod that will thread over a complementary hole established on the back plate (7).
Dicho carro incorpora una ranura (12) formal y dimensionalmente adecuada para recibir en su seno a los diferentes racores (13), ajustables en un elemento adaptador (14), racores destinados a acoplarse en la conducción o tubo elástico (2), incorporando la pletina anterior (6), en correspondencia con el citado carro, una ventana (15) formal y dimensionalmente adecuada para permitir el paso a su través del comentado racor (13).Said carriage incorporates a groove (12) formally and dimensionally suitable to receive within it the different fittings (13), adjustable in an adapter element (14), fittings intended to be coupled in the conduit or elastic tube (2), incorporating the front plate (6), in correspondence with the aforementioned car, a window (15) formally and dimensionally suitable to allow the passage through the said fitting (13).
El dispositivo, como incorpora, asociada al extremo anterior del armazón base, una mordaza constituida por dos semi-cuerpos, un semi-cuerpo inferior (14) fijo, y un semi-cuerpo superior (15) abatible sobre éste último, a través de la correspondiente charnela o bisagra (16).The device, as it incorporates, associated with the anterior end of the base frame, a jaw consisting of two semi-bodies, a fixed lower half-body (14), and a folding upper half-body (15) on the latter, through the corresponding hinge or hinge (16).
A ambos semi-cuerpos inferior y superior (14-15), se les practican respectivos cajeados longitudinales superior (17) e inferior (18), abiertos por sus extremos, en los que son susceptibles de encajarse respectivos accesorios guía, (19) en los que se define una acanaladura en media caña de trayectoria recta, pudiendo disponer el dispositivo de múltiples accesorios guía (19) en función de los diferentes diámetros previstos para el conducto tubular, presentando en cualquier caso, y como denominador común, la incorporación de un pequeño ensanchamiento diametral (20) en correspondencia con la extremidad prevista a quedar enfrentada con el racor (13) para facilitar la introducción del extremo del mismo y correspondiente deformación del conducto en dicha maniobra, mientras que por su extremidad opuesta, dicha acanaladura en media caña presenta un ensanchamiento progresivo (21), determinante de una superficie de revolución de generatriz curva de radio acorde al radio de curvatura previsto para la conducción o tubo flexible (2).Both upper and lower semi-bodies (14-15) are made respective upper (17) and lower (18) longitudinal openings, open at their ends, in which they are capable of fitting respective guide accessories, (19) into those that defines a groove in half rod with a straight path, the device with multiple guide accessories (19) being available depending on the different diameters provided for the tubular duct, presenting in any case, and as a common denominator, the incorporation of a small diametral widening (20) in correspondence with the limb intended to be faced with the fitting (13) to facilitate the introduction of the end thereof and corresponding deformation of the conduit in said maneuver, while due to its opposite limb, said groove in half-round has a progressive widening (21) , determinant of a generatrix revolution surface with a radius curve according to the radius of curvature provided for the conduit or flexible tube (2).
Así pues, dicho ensanchamiento progresivo (21) permite que la conducción previamente curvada mediante el elemento filiforme (4) arrollado en espiral anteriormente comentado adopte la posición adecuada en el montaje, si bien dicha maniobra podrá realizarse igualmente con la conducción recta en el seno del propio dispositivo, utilizando la superficie curvada de los accesorios guía (19) para que el conducto se adapte a dicho radio de curvatura, todo ello, lógicamente previamente al desplazamiento del carro (9) y consecuente acoplamiento del racor (13) en la conducción.Thus, said progressive widening (21) allows the previously curved conduction by means of the spiral wound element (4) previously mentioned to adopt the proper position in the assembly, although said maneuver can also be carried out with the straight conduction within the device itself, using the curved surface of the guide accessories (19) so that the conduit adapts to said radius of curvature, all this, logically prior to the carriage displacement (9) and consequent coupling of the fitting (13) in the conduction.
De acuerdo con otra de las características de la invención, se ha previsto que los accesorios guía (19) queden inmovilizados con respecto a las respectivas carcasas fija y móvil de la mordaza a través de sendos tornillos prisioneros (22), tal y como se puede observar en la figura 5.In accordance with another feature of the invention, it is provided that the guide accessories (19) are immobilized with respect to the respective fixed and movable jaw housings through two captive screws (22), as can be observe in figure 5.
Por su parte, el cuerpo superior (15) de la mordaza se estabilizará con respecto al cuerpo inferior (14), mediante un tornillo accionable a través del correspondiente mando (23), el cual es basculante con respecto a la pletina anterior (6) a través de un eje de basculación (24), y que se acopla a una escotadura en "U" (25) establecida en el borde lateral del cuerpo superior de la carcasa. On the other hand, the upper body (15) of the jaw will be stabilized with respect to the lower body (14), by means of a screw that can be operated through the corresponding control (23), which is tiltable with respect to the previous plate (6) through a tilt axis (24), and which is coupled to a "U" recess (25) established on the side edge of the upper body of the housing.

Claims

R E I V I N D I C A C I O N E SR E I V I N D I C A C I O N E S
Ia.- Dispositivo (1) para curvar tubos elásticos (2), tales como tubos de poliamida, caracterizado porque comprende al menos una envoltura (5) externa, esencialmente rígida, tubular y plásticamente deformable, cuyo diámetro interior es mayor que el diámetro exterior del tubo elástico a curvar, de modo que el tubo elástico a curvar es susceptible de ser introducido en el interior de dicha envoltura externa, y un elemento filiforme interno (4) arrollado en espiral, deformable elásticamente y adaptado para introducirse en el tubo elástico a deformar.I to .- device (1) for bending elastic tubes (2), such as polyamide tubing, comprising at least one shell (5) external, substantially rigid, tubular and plastically deformable, whose inner diameter is greater than the diameter exterior of the elastic tube to be curved, so that the elastic tube to be curved is capable of being introduced inside said external envelope, and an internal filiform element (4) spirally wound, elastically deformable and adapted to be introduced into the elastic tube to warp.
2a. -Dispositivo (1) según la reivindicación anterior, caracterizado porque el elemento filiforme interno (4) está constituido por un muelle helicoidal que está provisto de unos medios de asido que facilitan su sujeción en al menos uno de sus extremos.2 a . -Device (1) according to the preceding claim, characterized in that the internal filiform element (4) is constituted by a helical spring which is provided with gripping means that facilitate its fastening at least one of its ends.
3a.- Accesorio para el acoplamiento de racores en conductos tubulares, según reivindicaciones I a y 2a, caracterizado porque está constituido a partir de un cuerpo base, en el que se establecen paralelamente una serie de guías (8) por las que es desplazable un carro (9) dotado de medios de sustentación de diferentes tipos de racores (13), desplazamiento que se lleva a cabo con en concurso de un vastago empujador (10), de accionamiento manual, habiéndose previsto que enfrentadamente a dicho carro se establezca una mordaza de estabilización del conducto tubular en el que está destinado a acoplarse el racor establecido en el carro, con la particularidad de que la citada mordaza está constituida por dos semi-cuerpos, un semi-cuerpo inferior (14) fijo, y un semi-cuerpo superior (15) abatible sobre éste último, incorporando ambos semi-cuerpos determinantes de la mordaza respectivos cajeados superior (17) e inferior (18), abiertos por sus extremos, en los que son susceptibles de encajarse respectivos accesorios guía (19), en los que se define una acanaladura en media caña de diámetro acorde con el del conducto tubular al que está destinado a acoplarse el racor (13), con la particularidad de que la acanaladura en media caña, en su extremo opuesto al de enfrentamiento con el racor, presenta un ensanchamiento progresivo (21), determinante de una superficie de revolución de generatriz curva, de radio acorde al radio de curvatura previsto para la conducción.3 .- accessory for coupling fittings in tubular ducts, according to claims I and 2nd, characterized because it is formed from a base body, parallel set in which a set of guides (8) which is movable a carriage (9) provided with means of support of different types of fittings (13), displacement that is carried out with a hand-held push rod (10) in competition, having been provided that facing said carriage be established a stabilizing jaw of the tubular conduit in which the fitting established in the carriage is intended to be coupled, with the particularity that said jaw is constituted by two semi-bodies, a fixed semi-lower body (14), and a semi - upper body (15) collapsible on the latter, incorporating both jaw-determining semi-bodies respectively recessed upper (17) and lower (18), open at their ends, in which they are susceptible to fit respective guide accessories (19), in which a groove is defined in half a cane of diameter in accordance with that of the tubular conduit to which the fitting (13) is intended to be coupled, with the particularity that the groove in half cane, at its opposite end to the confrontation with the fitting, it has a progressive widening (21), which determines a surface of revolution of a curved generatrix, radius according to the radius of curvature provided for the conduction.
4a.- Accesorio para el acoplamiento de racores en conductos tubulares, según reivindicaciones anteriores, caracterizado porque la acanaladura en media caña que se defina en los accesorios guía (19), incorpora en . correspondencia con la extremidad que queda enfrentada al carro portador del racor, un ligero ensanchamiento diametral (20).4 a. - Accessory for coupling fittings in tubular ducts, according to previous claims, characterized in that the groove in half a rod defined in the guide accessories (19), incorporates into. correspondence with the limb that faces the carriage of the fitting, a slight diametral widening (20).
5a .- Accesorio para el acoplamiento de racores en conductos tubulares, según reivindicaciones anteriores, caracterizado porque tanto el cuerpo superior (15) como el inferior (14) de la mordaza incluyen medios de inmovilización de los accesorios guía (19), a través de sendos tornillos prisioneros (22).5 .- accessory for coupling fittings in tubular ducts, according to previous claims, characterized in that both the upper body (15) and the bottom (14) of the clamp includes means of immobilizing the guide (19) accessories, through of two captive screws (22).
6a .- Dispositivo para el acoplamiento de racores en conductos tubulares, según reivindicación I a, caracterizado porque el cuerpo superior (15) de la mordaza se estabiliza con respecto al cuerpo inferior (14) fijo, mediante un tornillo accionable a través del correspondiente mando (23), el cual es basculante con respecto al cuerpo principal del dispositivo a través de un eje de basculación (24), tornillo que se acopla a una escotadura en "U" (25) establecida en el borde lateral del cuerpo superior (15) de la carcasa. 6 .- device for coupling fittings in tubular conduits according to claim Ia, wherein the upper body (15) of the jaw is stabilized relative to the lower body (14) fixed by an actuatable screw through the corresponding control (23), which is tiltable with respect to the main body of the device through a tilting axis (24), screw that is coupled to a "U" recess (25) established on the side edge of the upper body ( 15) of the housing.
PCT/ES2009/000440 2008-09-05 2009-09-07 Device for bending flexible pipes and accessory for coupling the same to connectors WO2010026271A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES200801820U ES1068701Y (en) 2008-09-05 2008-09-05 DEVICE FOR CURVING ELASTIC PIPES
ESU200801820 2008-09-05
ESU200901293 2009-09-04
ES200901293U ES1071059Y (en) 2009-09-04 2009-09-04 DEVICE FOR COUPLING OF FITTINGS IN TUBULAR DUCTS

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WO2010026271A1 true WO2010026271A1 (en) 2010-03-11

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103406872A (en) * 2013-07-10 2013-11-27 奇瑞汽车股份有限公司 Engine bent connection pipe press-fitting tool
CN108994779A (en) * 2018-07-21 2018-12-14 温岭市鼎工自动化设备科技有限公司 A kind of assemble mechanism of flexible rubber hose interpolation heavy caliber fuse
CN109159411A (en) * 2018-08-13 2019-01-08 英立（江苏）机电有限公司 A kind of PE pipe texturing machine
CN113001465A (en) * 2021-02-24 2021-06-22 奇瑞汽车股份有限公司 Right-angle bent pipe press-fitting device and method

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Publication number Priority date Publication date Assignee Title
GB223366A (en) * 1923-09-10 1924-10-23 John Francis Carey Apparatus for bending light electric conduit and other tubes
US5765285A (en) * 1995-08-09 1998-06-16 The B.F. Goodrich Company Method of bending a rigid thermoplastic pipe
US5979032A (en) * 1998-06-11 1999-11-09 Chrysler Corporation Tool for inserting a fitting into a hose
ES1066290U (en) * 2007-09-14 2008-01-01 Ricardo Padilla Ros Apparatus for coupling a connector in the mouth of a free end of a tubular pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB223366A (en) * 1923-09-10 1924-10-23 John Francis Carey Apparatus for bending light electric conduit and other tubes
US5765285A (en) * 1995-08-09 1998-06-16 The B.F. Goodrich Company Method of bending a rigid thermoplastic pipe
US5979032A (en) * 1998-06-11 1999-11-09 Chrysler Corporation Tool for inserting a fitting into a hose
ES1066290U (en) * 2007-09-14 2008-01-01 Ricardo Padilla Ros Apparatus for coupling a connector in the mouth of a free end of a tubular pipe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103406872A (en) * 2013-07-10 2013-11-27 奇瑞汽车股份有限公司 Engine bent connection pipe press-fitting tool
CN103406872B (en) * 2013-07-10 2015-06-10 奇瑞汽车股份有限公司 Engine bent connection pipe press-fitting tool
CN108994779A (en) * 2018-07-21 2018-12-14 温岭市鼎工自动化设备科技有限公司 A kind of assemble mechanism of flexible rubber hose interpolation heavy caliber fuse
CN108994779B (en) * 2018-07-21 2020-02-07 温岭市鼎工自动化设备科技有限公司 Assembly devices of flexible glue pipe interpolation heavy-calibre core
CN109159411A (en) * 2018-08-13 2019-01-08 英立（江苏）机电有限公司 A kind of PE pipe texturing machine
CN113001465A (en) * 2021-02-24 2021-06-22 奇瑞汽车股份有限公司 Right-angle bent pipe press-fitting device and method

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