ES2604161A1 - Procedure and device for the encapsulation of a strip of leds, as well as such strip of leds encapsulada (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure and device for the encapsulation of a strip of leds, as well as such strip of leds encapsulada (Machine-translation by Google Translate, not legally binding) Download PDFInfo
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- ES2604161A1 ES2604161A1 ES201630552A ES201630552A ES2604161A1 ES 2604161 A1 ES2604161 A1 ES 2604161A1 ES 201630552 A ES201630552 A ES 201630552A ES 201630552 A ES201630552 A ES 201630552A ES 2604161 A1 ES2604161 A1 ES 2604161A1
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- A—HUMAN NECESSITIES
- A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
- A22C—PROCESSING MEAT, POULTRY, OR FISH
- A22C11/00—Sausage making ; Apparatus for handling or conveying sausage products during manufacture
- A22C11/10—Apparatus for twisting or linking sausages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
- F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
- F21S4/24—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
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- A—HUMAN NECESSITIES
- A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
- A22C—PROCESSING MEAT, POULTRY, OR FISH
- A22C11/00—Sausage making ; Apparatus for handling or conveying sausage products during manufacture
- A22C11/10—Apparatus for twisting or linking sausages
- A22C2011/101—Apparatus for twisting or linking sausages for pinching and twisting
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- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
Description
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PROCEDIMIENTO Y DISPOSITIVO PARA EL ENCAPSULADO DE UNA TIRA DE LEDS, ASI COMO, DICHA TIRA DE LEDS ENCAPSULADAPROCEDURE AND DEVICE FOR THE ENCAPSULATE OF A LED STRIP, AS WELL, SUCH LED STRIP ENCAPSULATED
DESCRIPCIONDESCRIPTION
OBJETO DE LA INVENCIONOBJECT OF THE INVENTION
La presente invention se engloba en el campo de la production de tiras de leds, de las que conforman los sistemas de iluminacion lineal con leds. Espedficamente, se relaciona con un procedimiento y un dispositivo para llevar a cabo, por coextrusion en frio, el encapsulado de las tiras de leds.The present invention is encompassed in the field of LED strip production, of which the linear lighting systems with LEDs. Specifically, it is related to a procedure and a device to carry out, by cold coextrusion, the encapsulation of the LED strips.
Asi mismo, es tambien objeto de la invencion, una tira flexible de leds encapsulada obtenida empleando el procedimiento y el dispositivo de la invencion.Likewise, it is also the object of the invention, a flexible strip of encapsulated LEDs obtained using the method and the device of the invention.
ANTECEDENTES DE LA INVENCIONBACKGROUND OF THE INVENTION
Son conocidas las tiras flexibles de leds con caracteristicas de impermeabilidad que le permiten ser usadas tanto en interiores como en exteriores.Flexible LED strips with waterproof characteristics that allow it to be used both indoors and outdoors are known.
En la tecnica, los sistemas de iluminacion lineal como las tiras flexibles de leds se nombran habitualmente por sus siglas en ingles "SILL”, lo mismo cuando incluyen un recubrimiento impermeabilizador y con funciones opticas son sistemas opticos integrados que se nombran por sus siglas en ingles "SOI”.In the art, linear lighting systems such as flexible LED strips are usually named by their acronym "SILL", the same when they include a waterproofing coating and with optical functions are integrated optical systems that are named by their acronym in English "SOI."
Actualmente, la impermeabilidad es conseguida mediante la deposition de epoxis, poliuretanos o siliconas sobre la tira flexible de leds. Los procesos actuales de impermeabilizacion, por ejemplo, con silicona, son semi-automaticos y consisten en ir depositando la silicona sobre un tramo de tira de leds de aproximadamente 5 metros, que luego, debe ser sustituido por un nuevo tramo para llevar a cabo la deposicion de la silicona en el nuevo tramo de tira de leds. Suponiendo, un considerable incremento en los costes de fabrication de la tira de leds.Currently, the impermeability is achieved by the deposition of epoxies, polyurethanes or silicones on the flexible LED strip. The current waterproofing processes, for example, with silicone, are semi-automatic and consist of depositing the silicone on a section of LED strip of approximately 5 meters, which then must be replaced by a new section to carry out the deposition of the silicone in the new section of LED strip. Assuming a considerable increase in the manufacturing costs of the LED strip.
Como solution alternativa a la anterior, se suelen utilizar carcasas de PVC o silicona en las que se introduce la tira leds para lograr su impermeabilidad. Representando, igualmente, altos costes de fabricacion de la tira de leds.As an alternative solution to the previous one, PVC or silicone housings are usually used in which the LED strip is introduced to achieve its impermeability. Representing also high manufacturing costs of the LED strip.
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Por otro lado, uno de los principales problemas que tienen los leds es el angulo de apertura que ofrece, el cual, oscila entre un valor mmimo de 120° y un valor maximo de a 140o. Con vistas a aumentar este angulo se suele recurrir a la optica. Para ello, normalmente, se suele emplear un perfil, por ejemplo, del tipo "canal”, habitualmente de aluminio, PVC, etc., en donde se embute y fija en su interior la tira de leds, y al que se incorpora superiormente una lente que amplia o disminuye este angulo. Suponiendo, un considerable incremento en los costes de fabrication e instalacion de la tira de leds.On the other hand, one of the main problems that LEDs have is the opening angle that it offers, which ranges between a minimum value of 120 ° and a maximum value of 140 °. With a view to increasing this angle, optics are often used. For this, normally, a profile is used, for example, of the "channel" type, usually of aluminum, PVC, etc., where the LED strip is embedded and fixed inside, and to which a top is incorporated lens that widens or decreases this angle, assuming a considerable increase in the manufacturing and installation costs of the LED strip.
Por tal razon, de forma sencilla y economica, se requiere disenar una tira flexible de leds encapsulada con la optica incorporada que sea obtenida de una manera continua y automatica, que de solution a los inconvenientes de la tecnica conocida citados anteriormente.For this reason, in a simple and economical way, it is necessary to design a flexible LED strip encapsulated with the built-in optics that is obtained in a continuous and automatic way, that of solution to the drawbacks of the known technique mentioned above.
DESCRIPCION DE LA INVENCIONDESCRIPTION OF THE INVENTION
La presente invention queda establecida y caracterizada en las reivindicaciones independientes, mientras que las reivindicaciones dependientes describen otras caracteristicas de la misma.The present invention is established and characterized in the independent claims, while the dependent claims describe other features thereof.
La invencion tiene por objetos un procedimiento y un dispositivo para el encapsulado de una tira de leds, asi como, dicha tira de leds encapsulada que permitan reducir los costes de fabricacion e instalacion de la tira de leds. El problema tecnico a resolver es establecer las etapas del procedimiento y la configuration del dispositivo y la tira de leds para alcanzar el objeto citado.The object of the invention is a method and a device for encapsulating a LED strip, as well as said encapsulated LED strip that allows to reduce the manufacturing and installation costs of the LED strip. The technical problem to solve is to establish the stages of the procedure and the configuration of the device and the LED strip to reach the mentioned object.
La invencion logra resolver eficazmente el problema tecnico planteado, pues, la conformation particular del encapsulado de la tira de leds mediante coextrusion en frio de silicona liquida, permite realizar el encapsulado de manera continua y automatica, asi como, que dicho encapsulado pueda comprender la optica incorporada. Asi, se logra reducir, en aproximadamente un 60%, los costes por impermeabilizacion de la tira de leds, es decir, la incorporation del encapsulado a la misma; asi como, se elimina la adicion de un perfil, por ejemplo, de aluminio, y una lente para lograr el angulo de iluminacion de los leds requerido. Todo lo cual, redunda en una considerable reduction de los costes de fabricacion e instalacion de la tira de leds.The invention manages to effectively solve the technical problem posed, therefore, the particular conformation of the encapsulation of the LED strip by means of cold coextrusion of liquid silicone, allows the encapsulation to be carried out continuously and automatically, as well as, that said encapsulation can comprise the optics built-in Thus, it is possible to reduce, by approximately 60%, the costs of waterproofing the LED strip, that is, the incorporation of the encapsulation thereto; as well as, the addition of a profile, for example, of aluminum, and a lens to achieve the required illumination angle of the LEDs is eliminated. All of which results in a considerable reduction in the manufacturing and installation costs of the LED strip.
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Ademas, el procedimiento descrito permite una produccion lineal continua, sin interruption de la cadencia, lo que hace mas estable la calidad del producto obtenido a un estandar unico, a diferencia de las tiras de leds no continuas en las que hay diferencias de calidad entre ellas.In addition, the described procedure allows a continuous linear production, without interruption of the cadence, which makes the quality of the product obtained to a single standard more stable, unlike the non-continuous LED strips in which there are quality differences between them. .
Con la expresion "extendida longitudinalmente" se quiere referir a que se extiende a todo lo largo de la tira de leds.With the expression "extended longitudinally" is meant to extend throughout the length of the LED strip.
Con "en frio” se quiere referir a una temperatura cercana a la temperatura ambiente. DESCRIPCION DE LAS FIGURASWith "cold" we mean a temperature close to room temperature. DESCRIPTION OF THE FIGURES
Se complementa la presente memoria descriptiva, con un juego de figuras, ilustrativas del ejemplo preferente, y nunca limitativas de la invention.The present specification is complemented with a set of figures, illustrative of the preferred example, and never limiting the invention.
La figura 1A representa una vista en alzado esquematica del dispositivo para el encapsulado de una tira de leds. La figura 1B representa una vista superior del molde.Figure 1A represents a schematic elevation view of the device for encapsulating a LED strip. Figure 1B represents a top view of the mold.
Las figuras de la 2 a la 6 representan una vista frontal en corte de unas realizaciones de la tira de leds encapsulada con la optica incorporada, obtenidas empleando el dispositivo de la figura 1.Figures 2 through 6 represent a front sectional view of embodiments of the LED strip encapsulated with the optics incorporated, obtained using the device of Figure 1.
Las figuras de la 7 a la 11 representan una vista frontal en corte de unas realizaciones de medios de fijacion aplicadas a la tira de leds encapsulada de la figura 2, pero aplicables a las realizaciones de las figuras de la 3 a la 6.Figures 7 to 11 represent a front sectional view of embodiments of fixing means applied to the encapsulated LED strip of Figure 2, but applicable to the embodiments of Figures 3 to 6.
La figura 12 representa una vista frontal en corte de una realization de medios de disipacion de calor aplicada a la tira de leds encapsulada de la figura 2, pero aplicable a las realizaciones de las figuras de la 3 a la 6.Figure 12 depicts a front sectional view of an embodiment of heat dissipation means applied to the encapsulated LED strip of Figure 2, but applicable to the embodiments of Figures 3 to 6.
Las figuras 13 a 15 representan realizaciones similares a las mostradas en las figuras 2 a 6 en las que la tira de leds incluye leds a ambos lados de su soporte con lo que presenta encapsulado con la optica incorporada a ambos lados del mismo. Por claridad, no se anotan los angulos alfa, que son los mismos que para las figuras 2 a 6.Figures 13 to 15 represent embodiments similar to those shown in Figures 2 to 6 in which the LED strip includes LEDs on both sides of its support, thus presenting encapsulated with the optics incorporated on both sides thereof. For clarity, the alpha angles, which are the same as for Figures 2 to 6, are not noted.
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Las figuras 18 y 19 representan la vista de la figura 2 con proyeccion a un lado del soporte y a ambos lados respectivamente.Figures 18 and 19 represent the view of Figure 2 with projection on one side of the support and on both sides respectively.
La figura 20 representa una vista en perspectiva de una tira de leds con la configuracion de la figura 2 y con una proyeccion.Figure 20 represents a perspective view of a LED strip with the configuration of Figure 2 and with a projection.
Las figuras 21 y 22 representan la vista de la figura 13 con proyeccion a un lado del soporte y a ambos lados respectivamente.Figures 21 and 22 represent the view of Figure 13 with projection on one side of the support and on both sides respectively.
La figura 23 representa una vista en perspectiva de la configuracion de la figura 21.Figure 23 represents a perspective view of the configuration of Figure 21.
La figura 24 representa una vista en perspectiva de la configuracion de la figura 22. EXPOSICION DETALLADA DE LA INVENCIONFigure 24 represents a perspective view of the configuration of Figure 22. DETAILED EXHIBITION OF THE INVENTION
La presente invencion se relaciona con un procedimiento y un dispositivo para el encapsulado de una tira de leds (1), con vistas a lograr caracteristicas de impermeabilidad en la tira de leds para su empleo tanto en interiores como en exteriores.The present invention relates to a method and a device for encapsulating a LED strip (1), with a view to achieving impermeability characteristics in the LED strip for use both indoors and outdoors.
Como se muestra en la figura 1, el dispositivo comprende un molde (2), el cual, comprende un cuerpo (2.1) y una tapa (2.2) de manera que entre ambos se crea una cavidad (2.3), la cual, tiene forma de embudo.As shown in Figure 1, the device comprises a mold (2), which comprises a body (2.1) and a cover (2.2) so that a cavity (2.3) is created between them, which is shaped funnel
Preferiblemente, el cuerpo (2.1) y la tapa (2.2) son acoplables entre si, pudiendo ser fijada la tapa (2.2) al cuerpo (2.1) a traves de cualquier tipo de medios de fijacion conocido (no mostrados en las figuras), tales como, tornillos -los mas habituales-, pasadores, etc., que permitan el acople y desacople de ambas piezas (2.1,2.2), asi como, mantener las dimensiones apropiadas de la cavidad (2.3) mientras que la tapa (2.1) y el cuerpo (2.2) se encuentren acoplados.Preferably, the body (2.1) and the cover (2.2) are attachable with each other, the cover (2.2) being able to be fixed to the body (2.1) through any type of known fixing means (not shown in the figures), such as, screws - the most common -, pins, etc., that allow the coupling and disengagement of both pieces (2.1,2.2), as well as, maintain the appropriate dimensions of the cavity (2.3) while the cover (2.1) and the body (2.2) is coupled.
Asi mismo, el molde (2) comprende al menos un conducto de entrada (2.4) de la tira de leds (1) y al menos un conducto de salida (2.5) de la cavidad (2.3) conformada entre su cuerpo (2.1) y su tapa (2.2). Ambos conductos (2.4,2.5) estan alineados o paralelos, donde, el conducto de entrada (2.4), puede quedar dispuesto atravesando el cuerpo (2.1), conduciendo la tira de leds (1) hasta la cavidad (2.3), y el conducto de salida (2.5), se prefiere que este conformado en la tapa (2.2). Por productividad, es habitual disponer masLikewise, the mold (2) comprises at least one inlet duct (2.4) of the LED strip (1) and at least one outlet duct (2.5) of the cavity (2.3) formed between its body (2.1) and its cover (2.2). Both ducts (2.4,2.5) are aligned or parallel, where, the inlet duct (2.4) can be arranged through the body (2.1), leading the LED strip (1) to the cavity (2.3), and the duct output (2.5), it is preferred that it is formed in the lid (2.2). For productivity, it is usual to have more
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de un conducto de entrada (2.4) y los correspondientes de salida (2.5), siendo habitual el uso de dos de entrada y dos salida, opcionalmente cuatro pero pudiendo ser un numero mayor.of an inlet conduit (2.4) and the corresponding ones of exit (2.5), being habitual the use of two of entrance and two exit, optionally four but being able to be a greater number.
Preferiblemente, el conducto de entrada (2.4), tendra unas dimensiones que se corresponden con las dimensiones de la tira de leds (1) que lo atraviesa, mientras que el conducto de salida (2.5), comprendera unas dimensiones y geometria tales que funcionen como medios de conformado (2.51) del encapsulado de la tira de leds (1), por ejemplo, en correspondencia con el perfil o contorno perimetral de cualquiera de las realizaciones mostradas en las figuras de la 2 a la 17, conformando en el encapsulado al menos una protuberancia con funcion optica, para cambiar al angulo de la luz emitida, unos extremos de fijacion, una superficie de disipacion de calor, etc.Preferably, the inlet duct (2.4), will have dimensions corresponding to the dimensions of the led strip (1) that passes through it, while the outlet duct (2.5), will comprise such dimensions and geometry that function as forming means (2.51) of the encapsulation of the LED strip (1), for example, in correspondence with the profile or perimeter contour of any of the embodiments shown in the figures from 2 to 17, forming in the encapsulation at least a protuberance with optical function, to change the angle of the emitted light, fixing ends, a heat dissipation surface, etc.
Asi, pueden disenarse una pluralidad de tapas (2.2) con diferentes configuraciones de medios de conformado (2.51) al interior del conducto de salida (2.5), los cuales, representan negativos del perfil perimetral que se desea dar al encapsulado de la tira de leds (1), donde, dichas tapas (2.2) podran ser intercambiadas en el cuerpo (2.1) del molde (2) segun convenga.Thus, a plurality of caps (2.2) with different configurations of forming means (2.51) can be designed inside the outlet duct (2.5), which represent negatives of the perimeter profile that it is desired to give to the encapsulation of the LED strip (1), where, said covers (2.2) may be exchanged in the body (2.1) of the mold (2) as appropriate.
Adicionalmente se pueden incluir canalizaciones de circulation de agua en el cuerpo (2.1), no mostradas en las figuras, para refrigeration que permita mantener una temperatura baja aun con la presion a la que el dispositivo se ve sometido.Additionally, water circulation pipes in the body (2.1), not shown in the figures, can be included for refrigeration that allows maintaining a low temperature even with the pressure to which the device is subjected.
Para llevar a cabo una alimentation continuada de la tira de leds (1) al molde (2), se prefiere que el dispositivo comprenda un guiador (4) de la tira de leds (1) en el conducto de entrada (2.4) del molde (2). El guiador (4) comprende al menos tres poleas alineadoras (4.1) dispuestas de forma sucesiva, que alinean y embocan la tira de leds (1) proveniente de una bobina (5) donde se encuentra enrollada.For continuous feeding of the LED strip (1) to the mold (2), it is preferred that the device comprises a guide (4) of the LED strip (1) in the inlet duct (2.4) of the mold (2). The guide (4) comprises at least three aligning pulleys (4.1) arranged successively, which align and embed the LED strip (1) from a coil (5) where it is wound.
Por otro lado, el cuerpo (2.1) del molde (2) comprende un conducto de introduction (2.6), preferiblemente lateral, por donde se introduce, a presion, una mezcla de silicona liquida con un agente cauterizante en la cavidad (2.3).On the other hand, the body (2.1) of the mold (2) comprises an introduction duct (2.6), preferably lateral, where a mixture of liquid silicone with a cauterizing agent is introduced into the cavity (2.3).
Preferiblemente, la mezcla de la silicona liquida con su agente cauterizante se lleva a cabo de forma mecanica y a la temperatura de los componentes a temperatura ambiente, es decir, en frio, en una mezcladora de fluidos densos (no mostrada en las figuras) paraPreferably, the mixing of the liquid silicone with its cauterizing agent is carried out mechanically and at the temperature of the components at room temperature, that is, cold, in a dense fluid mixer (not shown in the figures) to
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obtener una mezcla homogenea de dichos componentes, la cual, es introducida a presion en el conducto lateral (2.6) del molde (2) por medio de un tomillo sin fin (6) de alto par, y posteriormente, introducida en la cavidad (2.3).obtaining a homogeneous mixture of said components, which is introduced under pressure into the lateral duct (2.6) of the mold (2) by means of an endless thyme (6) of high torque, and subsequently introduced into the cavity (2.3 ).
La cavidad (2.3) en forma de embudo, atravesada por el avance continuo de la tira de leds (1), hace que la silicona que contiene se vaya depositando alrededor de dicha tira de leds (1), lograndose la coextrusion de la tira de leds (1) con la silicona encapsulandola, a su paso por el conducto de salida (2.5). El encapsulado de la tira de leds (1) tendra un perfil perimetral que se corresponde con las dimensiones y geometria interior del conducto de salida (2.5), es decir, de los medios de conformado (2.51).The funnel-shaped cavity (2.3), crossed by the continuous advance of the LED strip (1), causes the silicone it contains to be deposited around said LED strip (1), achieving coextrusion of the LED strip LEDs (1) with the silicone encapsulating it, as it passes through the outlet duct (2.5). The encapsulation of the LED strip (1) will have a perimeter profile that corresponds to the dimensions and internal geometry of the outlet duct (2.5), that is, of the forming means (2.51).
Preferiblemente, a la salida del molde (2), el dispositivo comprende un horno (3) longitudinal con traccion por cinta adhesiva (3.1), con lo que la adhesion de la misma evita el uso de un arrastre adicional, en el cual, se lleva a cabo el curado de la silicona del encapsulado de la tira de leds (1). Por ejemplo, en el horno (3), dicho curado podria llevarse a cabo a una temperatura de entre aproximadamente 150oC a 240oC, durante un tiempo de entre aproximadamente 60 segundos a 150 segundos.Preferably, at the exit of the mold (2), the device comprises a longitudinal furnace (3) with traction by adhesive tape (3.1), whereby the adhesion thereof avoids the use of an additional drag, in which, carries out the curing of the silicone of the LED strip encapsulation (1). For example, in the oven (3), said curing could be carried out at a temperature of between about 150 ° C to 240 ° C, for a time of between about 60 seconds to 150 seconds.
De forma general, la temperatura del horno (3) se define en funcion de las especificaciones de la mezcla de la silicona liquida con su agente cauterizante o catalizador de curado, mientras que la longitud de dicho horno (3) dependera del tiempo necesario para el completo curado de dicha mezcla y la velocidad que lleve la cinta adhesiva (3.1).In general, the temperature of the furnace (3) is defined according to the specifications of the mixture of the liquid silicone with its cauterizing agent or curing catalyst, while the length of said furnace (3) will depend on the time required for the complete curing of said mixture and the speed of the adhesive tape (3.1).
Convenientemente, la cinta adhesiva (3.1) es la responsable del desplazamiento continuado de la tira de leds (1) a traves del dispositivo. En otras palabras, la fijacion de la tira de leds (1) encapsulada sobre la cinta adhesiva (3.1) a la entrada del horno (3), no solo permite su traslado a traves del horno (3), sino que constituye el medio de traccion que permite el desplazamiento continuado de la tira de leds (1) a traves de todo el dispositivo, es decir, desde el desenrollado de la bobina (5) hasta su salida del horno (3).Conveniently, the adhesive tape (3.1) is responsible for the continued movement of the LED strip (1) through the device. In other words, the fixation of the LED strip (1) encapsulated on the adhesive tape (3.1) to the oven entrance (3), not only allows its transfer through the oven (3), but also constitutes the means of traction that allows the continuous movement of the LED strip (1) through the entire device, that is, from the unwinding of the coil (5) to its exit from the oven (3).
Opcionalmente, el dispositivo ademas comprende un cabezal de impresion lineal y un cabezal de corte, no mostrados en las figuras, para obtener la longitud requerida de la tira (1), o troquelado (1.314) para obtener una forma, figuras 20, 23 y 24.Optionally, the device also comprises a linear print head and a cutting head, not shown in the figures, to obtain the required length of the strip (1), or die cut (1,314) to obtain a shape, figures 20, 23 and 24.
De esta forma, el encapsulado de la tira de leds (1) se realiza de manera continua, lo que redunda en un ahorro considerable de tiempo y recursos.In this way, the encapsulation of the LED strip (1) is carried out continuously, which results in a considerable saving of time and resources.
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Siendo entonces el procedimiento para encapsular la tira de leds (1), cuyo encapsulado es de un material plastico, iniciado con el guiado de dicha tira de leds (1) hasta la entrada del molde (2).Being then the procedure to encapsulate the LED strip (1), whose encapsulation is of a plastic material, initiated with the guidance of said LED strip (1) to the entrance of the mold (2).
Paralelamente, se lleva a cabo el mezclado en frio a la temperatura de los componentes de la silicona para obtener dicha silicona. Dichos componentes consisten en silicona liquida y un agente cauterizante o catalizador del curado de la silicona liquida. La mezcla de estos componentes se produce mediante reaccion quimica, la cual, es regulada (acelerada/ralentizada) con la temperatura. Por tal razon, para su conveniente manipulation, se requiere mantener a baja temperatura la silicona obtenida con dicha mezcla, por ejemplo, a la temperatura inicial de sus componentes.In parallel, cold mixing is carried out at the temperature of the silicone components to obtain said silicone. Such components consist of liquid silicone and a cauterizing agent or catalyst for curing liquid silicone. The mixing of these components is produced by chemical reaction, which is regulated (accelerated / slowed down) with temperature. For this reason, for its convenient manipulation, it is required to keep the silicone obtained with said mixture at a low temperature, for example, at the initial temperature of its components.
Asi mismo, se prefiere que la zona de production donde se desarrolle el procedimiento se mantenga a temperaturas bajas, pues, una vez realizado el mezclado de los componentes silicona, su curado se acelerara ante el aumento de la temperatura, entendiendose por tales temperaturas las cercanas a la temperatura ambiente, a diferencia de los procesos conocidos donde se utilizan temperaturas de procesado de plasticos a partir de 100°C.Likewise, it is preferred that the production zone where the process is carried out is kept at low temperatures, because, once the mixing of the silicone components has been carried out, its curing will be accelerated before the temperature increase, with those temperatures being understood as nearby at room temperature, unlike known processes where plastics processing temperatures from 100 ° C are used.
Seguidamente, de forma consecutiva, se realiza una introduccion de la silicona al molde (2) y una coextrusion de la tira de leds (1) con la silicona encapsulandola. En ambas etapas, se realiza una extrusion en frio, con vistas a facilitar la manipulacion de la silicona durante las mismas.Then, consecutively, an introduction of the silicone into the mold (2) and a coextrusion of the LED strip (1) with the silicone encapsulating it is performed. In both stages, a cold extrusion is performed, with a view to facilitating the manipulation of the silicone during them.
Preferiblemente, en la coextrusion se conforma al menos una protuberancia con funcion optica en el encapsulado de la tira de leds (1) para cambiar al angulo de la luz emitida por los leds. Asi, se contara con una tira de leds (1) con la optica incorporada a su encapsulado. Con lo cual y en ventaja a lo conocido en el estado de la tecnica, se elimina la adicion de un perfil y una lente externa para lograr el angulo de iluminacion de la luz emitida por los leds requerido.Preferably, in the coextrusion at least one protuberance with optical function is formed in the encapsulation of the LED strip (1) to change to the angle of the light emitted by the LEDs. Thus, there will be a LED strip (1) with the optics incorporated into its encapsulation. With which and in advantage of what is known in the state of the art, the addition of a profile and an external lens is eliminated to achieve the angle of illumination of the light emitted by the required LEDs.
Finalmente, se introduce la tira de leds (1) encapsulada con la silicona en un horno (3) para llevar a cabo el curado de dicha silicona.Finally, the LED strip (1) encapsulated with the silicone is introduced in an oven (3) to carry out the curing of said silicone.
Opcionalmente, con posterioridad a la etapa de curado en el horno se lleva a cabo una impresion y posteriormente un corte o troquelado con una frecuencia determinada enOptionally, after the curing stage in the oven an impression is carried out and subsequently a cut or die cut with a certain frequency in
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funcion de la velocidad de salida del horno y de la distancia pretendida entre cortes, para obtener la longitud requerida de la tira (1), o troquelados (1.314), para obtener una forma en el encapsulado, figuras 20, 23 y 24.function of the furnace exit speed and the intended distance between cuts, to obtain the required length of the strip (1), or die cut (1,314), to obtain a form in the encapsulation, figures 20, 23 and 24.
Al final del proceso, se tiene una tira flexible de leds (1) encapsulada.At the end of the process, there is a flexible LED strip (1) encapsulated.
Es tambien objeto de la presente invencion, una tira flexible de leds (1) encapsulada, la cual, como se muestra en las figuras de la 2 a la 17, comprende un soporte laminar (1.1), principalmente un circuito impreso, sobre el que se fijan unos leds (1.2) en una de sus caras, figuras 2 a 12, 18 y 19, o en ambas caras, figuras 13 a 17, 21 y 22, y una envolvente (1.3) que rodea completamente el soporte (1.1) con los leds (1.2) a modo de encapsulado.It is also the object of the present invention, a flexible strip of encapsulated LEDs (1), which, as shown in figures 2 through 17, comprises a laminar support (1.1), mainly a printed circuit, on which LEDs (1.2) are fixed on one of their faces, figures 2 to 12, 18 and 19, or on both sides, figures 13 to 17, 21 and 22, and an envelope (1.3) that completely surrounds the support (1.1) with the LEDs (1.2) as an encapsulation.
La envolvente (1.3) presenta una cara exterior superior (1.31) que es la enfrentada al led (1.2), donde, dicha envolvente (1.3) es de silicona flexible. Preferiblemente, de silicona liquida traslucida.The envelope (1.3) has an upper outer face (1.31) that is facing the led (1.2), where said envelope (1.3) is made of flexible silicone. Preferably, of translucent liquid silicone.
Asi mismo, se prefiere que la cara exterior superior (1.31) de la envolvente (1.3) comprenda al menos una protuberancia con funcion optica.Likewise, it is preferred that the upper outer face (1.31) of the envelope (1.3) comprises at least one protrusion with optical function.
Por ejemplo, como en las realizaciones de las figuras 2 y 3, 13 y 14, la protuberancia podria quedar conformada por al menos una superficie curva (1.311). Particularmente, en la realizacion de las figuras 2 y 13, la protuberancia queda conformada por una superficie curva (1.311) dispuesta de forma concava respecto al led (1.2), dandole un determinado angulo de iluminacion (a).For example, as in the embodiments of Figures 2 and 3, 13 and 14, the protuberance could be formed by at least one curved surface (1,311). Particularly, in the embodiment of Figures 2 and 13, the protuberance is formed by a curved surface (1,311) arranged concavely with respect to the LED (1.2), giving it a certain angle of illumination (a).
En la realizacion mostrada en las figuras 3 y 14, la protuberancia queda conformada por tres superficies curvas (1.311) contiguas conformando un perfil ondulado donde la superficie cuerva (1.311) central queda dispuesta de forma convexa respecto al led (1.2), dandole un angulo de iluminacion (a) mayor que el de la realizacion de la figura 2.In the embodiment shown in figures 3 and 14, the protuberance is formed by three contiguous curved surfaces (1,311) forming a wavy profile where the central raven surface (1,311) is arranged convexly with respect to the led (1.2), giving it an angle of illumination (a) greater than that of the embodiment of Figure 2.
Igualmente, la protuberancia podria quedar conformada por una superficie curva (1.311) conectada con una superficie recta (1.312). Por ejemplo, las realizaciones vistas en las figuras 4 y 5, 15 y 17.Similarly, the protuberance could be formed by a curved surface (1,311) connected to a straight surface (1,312). For example, the embodiments seen in Figures 4 and 5, 15 and 17.
En el caso de la realizacion de las figuras 4 y 15, la protuberancia queda conformada por una superficie recta (1.312) inclinada y una superficie curva (1.311) dispuesta de formaIn the case of the realization of figures 4 and 15, the protuberance is formed by an inclined straight surface (1,312) and a curved surface (1,311) arranged so
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concava respecto al led (1.2), orientando el angulo de iluminacion (a) hacia el lado de la superficie curva (1.311).Concave with respect to the led (1.2), orienting the angle of illumination (a) towards the side of the curved surface (1.311).
Las figuras 5 y 17, ilustran una realizacion de la tira de leds (1) con dos hileras de led (1.2), en este caso, la protuberancia queda conformada por dos superficies curvas (1.311), una por cada led (1.2), unidas por una superficie recta (1.312) que las separa, donde, las superficies curvas (1.311) estan dispuestas de forma concava respecto al correspondiente led (1.2), dandole a cada led (1.2), un determinado angulo de iluminacion (a), tal como ocurre en la realizacion de la figura 2.Figures 5 and 17 illustrate an embodiment of the LED strip (1) with two rows of LEDs (1.2), in this case, the protuberance is formed by two curved surfaces (1.311), one for each LED (1.2), joined by a straight surface (1,312) that separates them, where the curved surfaces (1,311) are arranged concave with respect to the corresponding led (1.2), giving each led (1.2), a certain lighting angle (a), as it happens in the embodiment of figure 2.
Igualmente, como muestran las figuras 6 y 16, la protuberancia podria quedar conformada por una superficie irregular (1.313) a manera de "onda de sierra”, formando dientes cuyos tramos rectos estan orientados hacia el centro de la tira de leds (1), reduciendo el angulo de iluminacion (a) del led (1.2) respecto a la realizacion mostrada en la figura 2, con lo que se anade un efecto difusor de luz.Likewise, as shown in Figures 6 and 16, the protuberance could be formed by an irregular surface (1,313) as a "saw wave", forming teeth whose straight sections are oriented towards the center of the LED strip (1), reducing the angle of illumination (a) of the led (1.2) with respect to the embodiment shown in figure 2, thereby adding a light diffusing effect.
Las configuraciones aqu arriba citadas, cuando se fijan leds (1.2) en ambas caras del soporte laminar (1.1), figuras 13 a 17, al menos una de las caras exteriores superiores (1.31) puede presentar una proyeccion (1.310), figuras 18 a 20 leds en una cara, figuras 21 a 24 leds en ambas caras, en direction perpendicular al soporte laminar (1.1), figuras 18, 20, 21 y 23 para una cara y figuras 19, 22 y 24 en ambas caras. Esta proyeccion (1.310) ayuda a la fijacion de la tira de leds (1). Opcionalmente, la proyeccion (1.310) se encuentra interrumpida regularmente por recortes o troqueles (1.314), figuras 20, 23 y 24. En las figuras 18 a 24 se representan proyecciones solo para las configuraciones de las figuras 2 y 13 por economia de figuras, pero se pueden igualmente implementar en el resto de las configuraciones, figuras 3 a 12 y 14 a 17.The configurations mentioned above, when LEDs (1.2) are fixed on both sides of the laminar support (1.1), figures 13 to 17, at least one of the upper outer faces (1.31) may have a projection (1,310), figures 18 a 20 leds on one side, figures 21 to 24 leds on both sides, in a direction perpendicular to the laminar support (1.1), figures 18, 20, 21 and 23 for one side and figures 19, 22 and 24 on both sides. This projection (1,310) helps to fix the LED strip (1). Optionally, the projection (1,310) is regularly interrupted by cuts or dies (1,314), figures 20, 23 and 24. In projections 18 to 24 projections are represented only for the configurations of figures 2 and 13 by economy of figures, but they can also be implemented in the rest of the configurations, figures 3 to 12 and 14 to 17.
Opcionalmente, cuando los leds (1.2) se disponen en una sola de las caras del soporte laminar (1.1), la envolvente (1.3) ademas presenta una cara exterior inferior (1.32) que es la opuesta al led (1.2), figuras 7 a 12.Optionally, when the LEDs (1.2) are arranged on only one of the faces of the laminar support (1.1), the envelope (1.3) also has a lower outer face (1.32) that is the opposite of the led (1.2), figures 7 a 12.
Adicionalmente, como se muestra en las figuras de la 7 a la 9, la cara exterior inferior (1.32) de la envolvente (1.3) podria conformar un extremo de fijacion de la tira flexible de leds (1), con entrantes (1.321) y/o salientes (1.322) extendidos longitudinalmente desde la proximidad de alguno o ambos de los laterales (1.33) de la envolvente (1.3).Additionally, as shown in figures 7 to 9, the lower outer face (1.32) of the envelope (1.3) could form a fixing end of the flexible LED strip (1), with recesses (1,321) and / or projections (1,322) extended longitudinally from the proximity of one or both of the sides (1.33) of the envelope (1.3).
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Por ejemplo, en la realization de la figura 7, el extremo de fijacion de la tira de leds (1) queda conformado por sendos salientes (1.322) opuestos dispuestos hacia cada lateral (1.33) de la envolvente (1.3). Por ejemplo, dichos salientes (1.322) son aptos para correr a traves de un perfil tipo canaleta (no mostrado en las figuras) de emplazamiento de la tira de leds (1).For example, in the embodiment of Figure 7, the fixing end of the LED strip (1) is formed by two opposite projections (1,322) arranged towards each side (1,33) of the envelope (1.3). For example, said projections (1,322) are suitable for running through a channel profile (not shown in the figures) of the location of the LED strip (1).
En cuanto a la realizacion de la figura 8, el extremo de fijacion de la tira de leds (1) queda conformado por sendos entrantes (1.321), los cuales, por ejemplo, son aptos para correr al exterior de un perfil tipo saliente (no mostrado en las figuras) de emplazamiento de la tira de leds (1).As for the embodiment of Figure 8, the fixing end of the LED strip (1) is formed by two incoming (1,321), which, for example, are suitable for running outside of an outgoing profile (not shown in the figures) of the location of the LED strip (1).
Por parte de la realizacion mostrada en la figura 9, el extremo de fijacion de la tira de leds (1) se configura con un entrante (1.321) y un saliente (1.322) dispuestos en los respectivos laterales (1.33) de la envolvente (1.3), los cuales, igualmente pueden ser empleados para engarzar en un perfil (no mostrado en las figuras) de emplazamiento de la tira de leds (1).On the part of the embodiment shown in figure 9, the fixing end of the LED strip (1) is configured with a recess (1,321) and a projection (1,322) arranged on the respective sides (1,33) of the enclosure (1.3 ), which can also be used to crimp on a profile (not shown in the figures) of the location of the LED strip (1).
En otras posibles realizaciones, vistas en las figuras 10 y 11, el extremo de fijacion de la tira flexible de leds (1) podria quedar conformado entre la cara exterior superior (1.31) y la cara exterior inferior (1.32) de la envolvente (1.3), por ejemplo, con forma de protuberancia circular (1.331), figura 10, o de salientes opuestos (1.332) (figura 11) que se extiende longitudinalmente en al menos uno de los laterales (1.33) de la envolvente (1.3). Asi, por ejemplo, la tira de leds (1) podria ser emplazada lateralmente en un perfil tipo canaleta (no mostrado en las figuras) con conformaciones interiores donde acoplen las anteriormente descritas (1.331, 1.332).In other possible embodiments, seen in Figures 10 and 11, the fixing end of the flexible LED strip (1) could be formed between the upper outer face (1.31) and the lower outer face (1.32) of the envelope (1.3 ), for example, in the form of a circular protuberance (1,331), figure 10, or of opposite projections (1,332) (figure 11) extending longitudinally on at least one of the sides (1.33) of the envelope (1.3). Thus, for example, the LED strip (1) could be placed laterally in a gutter profile (not shown in the figures) with interior conformations where they fit the previously described (1,331, 1,332).
Por otro lado, en una realizacion vista en la figura 12, la cara exterior inferior (1.32) de la envolvente (1.3) podria conformar una superficie de disipacion de calor de la tira flexible de leds (1), con una pluralidad de aletas (1.323), al menos dos, extendidas por la cara exterior inferior (1.32).On the other hand, in an embodiment seen in Figure 12, the lower outer face (1.32) of the envelope (1.3) could form a heat dissipation surface of the flexible LED strip (1), with a plurality of fins ( 1,323), at least two, extended by the lower outer face (1,332).
Siempre que tecnicamente sea posible, cualquier combination de las realizaciones anteriormente descritas (figuras de la 2 a la 19, 21 y 22) podria conformarse en la envolvente (1.3) de la tira de leds (1), con vistas a personalizar dicha tira de leds (1) segun se requiera, ya sea, dotandola de una de las realizaciones de protuberancia con funcion optica (figuras de la 2 a la 17), extremo de fijacion (figuras de la 7 a la 11) y/o superficie de disipacion de calor (figura 12) de la tira de leds (1), o cualquier otra posible no mostrada en las figuras.Whenever technically possible, any combination of the previously described embodiments (figures 2 to 19, 21 and 22) could be formed in the envelope (1.3) of the LED strip (1), with a view to customizing said strip of LEDs (1) as required, either by providing it with one of the embodiments of extrusion with optical function (figures from 2 to 17), fixing end (figures from 7 to 11) and / or dissipation surface of heat (figure 12) of the LED strip (1), or any other possible not shown in the figures.
Adicionalmente se pueden anadir medios de coloracion o impresion sobre algunas de las partes de la envolvente (1.3) en colores opacos, translucidos o reflectantes para anadir otras funcionalidades opticas al sistema.Additionally, coloring or printing means can be added on some of the parts of the envelope (1.3) in opaque, translucent or reflective colors to add other optical functionalities to the system.
En cualquiera de las configuraciones citadas, la envolvente (1.3) puede incluir una impresion con tinta normal, reflectiva o laser, lo que sirve para la identification del producto, lote, etc.In any of the aforementioned configurations, the envelope (1.3) may include printing with normal, reflective or laser ink, which serves to identify the product, batch, etc.
Claims (19)
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ES201630552A ES2604161A1 (en) | 2016-04-29 | 2016-04-29 | Procedure and device for the encapsulation of a strip of leds, as well as such strip of leds encapsulada (Machine-translation by Google Translate, not legally binding) |
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