ES1206461U - SAFETY DEVICE OF TAPE SAWS (Machine-translation by Google Translate, not legally binding) - Google Patents

SAFETY DEVICE OF TAPE SAWS (Machine-translation by Google Translate, not legally binding) Download PDF

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ES1206461U
ES1206461U ES201830196U ES201830196U ES1206461U ES 1206461 U ES1206461 U ES 1206461U ES 201830196 U ES201830196 U ES 201830196U ES 201830196 U ES201830196 U ES 201830196U ES 1206461 U ES1206461 U ES 1206461U
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linear conveyors
cutting
belt
sleepers
saw
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ES1206461Y (en
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Carles MOLIST PUJOL
Antoni Manuel CASTRO LARRUBIA
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Abstract

Security device of band saws, coupled to a cutting table (1) of a band saw for automatic movement of an element to be cut to a vertical cutting saw (2), the device being characterized in that it comprises: - a frame (3) coupled to the cutting table (1) comprising in turn: - lower sleepers (7), - vertical columns (8) that start at the top of the sleepers (7), in which each column has a plurality of housings (10), and - horizontal profiles (9) engageable perpendicular to the housings (10) of the columns (8), - at least two lower linear conveyors (4) linked to the sleepers (7), parallel to each other and laterally spaced for passage of the cutting saw (2), in which each of the lower linear conveyors (4) has: - a drive motor (6), equipped with a variable speed drive and a rotary inverter, - a lower belt (11) mobile, driven by the motor (6) to support the element to be cut, - at least two upper linear conveyors (5), parallel to each other, facing higher than the corresponding lower linear conveyors (4), and laterally spaced for passage of the cutting saw (2), in which each of the linear conveyors Superiors (5) presents: - the drive motor (6), equipped with a variable speed drive and a rotary inverter, - a movable upper belt (13) driven by the engine (6) for pressing on the cutting element deposited on the corresponding lower belt (11), and - couplings (14) intended to house the profiles (9), and - an external controller for controlling the speed and direction of rotation of each of the motors (6) of the lower linear conveyors (4) and higher (5). (Machine-translation by Google Translate, not legally binding)

Description

OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION

La presente invención se encuadra en el campo técnico de las máquinas de aserrar, más concretamente en el de aquellas dotadas de hojas de sierra de cinta, y se refiere en particular a un dispositivo de seguridad acoplable a sierras de cinta para evitar cortes accidentales. The present invention falls within the technical field of sawing machines, more specifically in that of those equipped with band saw blades, and refers in particular to a safety device attachable to band saws to prevent accidental cuts.

ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION

La sierra de cinta es una sierra de pedal o eléctrica, que tiene una tira metálica de corte dentada, larga, estrecha y flexible que desplaza sobre dos ruedas que se ubican en un mismo plano vertical con un espacio entre ellas. Se suele utilizar para la realización de cortes en madera y metales, así como en la industria alimentaria para descuartizado de piezas cárnicas. The band saw is a pedal or electric saw, which has a long, narrow and flexible serrated metal strip that moves on two wheels that are located in the same vertical plane with a space between them. It is usually used for the realization of cuts in wood and metals, as well as in the food industry for the dismantling of meat pieces.

Existen dos tipos principales de sierras de cinta: las de suelo, que comprenden un mueble de grandes dimensiones que apoya sobre el suelo, y las de mesa, que se colocan sobre una mesa de soporte. Las sierras de cintas de suelo presentan como parámetros fundamentales la profundidad de corte y la garganta. La primera es la distancia horizontal entre la sierra de corte y la parte más alejada de la sierra, mientras que se conoce como garganta a la distancia vertical entre la mesa y la parte más alta del mueble y las guías de la sierra. There are two main types of band saws: those of floor, which comprise a large piece of furniture that rests on the floor, and those of table, which are placed on a support table. The ground band saws have as fundamental parameters the depth of cut and the throat. The first is the horizontal distance between the cutting saw and the furthest part of the saw, while the throat is known as the vertical distance between the table and the highest part of the furniture and the guides of the saw.

El principal inconveniente que presentan las sierras de cinta se deriva del hecho de que toda su área de corte, es decir, toda la tira metálica dentada, está totalmente al descubierto. Dado que cuando se desea realizar un corte preciso es necesario aproximar de manera manual el cuerpo a cortar hasta la sierra, existen importantes riesgos de accidentes por cortes en las extremidades del operario. The main drawback presented by band saws derives from the fact that their entire cutting area, that is, the entire toothed metal strip, is completely exposed. Since when you want to make a precise cut it is necessary to manually approximate the body to be cut to the saw, there are significant risks of accidents due to cuts in the limbs of the operator.

Se conocen en el actual estado de la técnica elementos mecánicos acoplables a sierras Mechanical elements attachable to saws are known in the current state of the art

de cinta, especialmente concebidos para aquellas empleadas en la industria cárnica, que desplazan de manera automática la pieza a trocear hasta la tira de corte, pero no son de utilidad cuando es necesario realizar cortes de elevada precisión. of tape, specially designed for those used in the meat industry, which automatically move the piece to be cut up to the cutting strip, but are not useful when it is necessary to make high precision cuts.

DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION

El objeto de la invención consiste en un dispositivo de seguridad acoplable a sierras de cinta, preferentemente a las mesas de corte de las sierras de cinta de suelo, aunque no limitado a dicho tipo de sierras. El dispositivo está concebido para aproximar de manera automática a un elemento a cortar hasta la sierra de corte, así como para alejarlo de dicha sierra una vez producido el corte, bien sea para retirar el elemento o para reposicionarlo y volver a someterlo a cortado. The object of the invention consists of a safety device attachable to band saws, preferably to the cutting tables of the floor band saws, although not limited to said type of saws. The device is designed to automatically approximate an element to be cut to the cutting saw, as well as to move it away from said saw once the cut has occurred, either to remove the element or to reposition it and resubmit it.

Para ello, el dispositivo comprende comprende un bastidor acoplable a la mesa de corte, que en el que se sustentan al menos dos transportadores lineales inferiores y al menos dos transportadores lineales superiores, cada uno de los cuales está dotado de su propio motor de accionamiento, que presenta un variador de velocidad y un inversor de giro. Se contempla asimismo la opción de que el motor de accionamiento sea un mototambor, Un controlador externo, preferentemente de tipo PLC, gobierna la velocidad y el sentido de giro de cada uno de los motores de los transportadores lineales. For this, the device comprises a frame that can be attached to the cutting table, which supports at least two lower linear conveyors and at least two upper linear conveyors, each of which is provided with its own drive motor, which features a speed variator and a turn inverter. The option is also contemplated that the drive motor is a drum motor. An external controller, preferably of the PLC type, governs the speed and direction of rotation of each of the motors of the linear conveyors.

El bastidor es preferentemente una estructura reticular que comprende a su vez unas traviesas inferiores y unas columnas verticales que parten superiormente desde las traviesas. Cada columna presenta una pluralidad de alojamientos, tipo orificio, definidos a distintas alturas, para acoplamiento de unos perfiles horizontales paralelos a las traviesas, los cuales sostienen a los transportadores lineales superiores. Las columnas incorporan asimismo unos elementos elásticos, preferentemente unos muelles, para facilitar la adaptación de los transportadores lineales superiores a las dimensiones del elemento a cortar. The frame is preferably a reticular structure that in turn comprises lower sleepers and vertical columns that depart superiorly from the sleepers. Each column has a plurality of housings, hole type, defined at different heights, for coupling horizontal profiles parallel to the sleepers, which support the upper linear conveyors. The columns also incorporate elastic elements, preferably springs, to facilitate the adaptation of linear conveyors greater than the dimensions of the element to be cut.

Cada transportador lineal comprende a su vez una cinta móvil que desplaza linealmente accionada por el motor. La velocidad y el sentido de desplazamiento de la cinta, como se ha indicado anteriormente, pueden ser regulados por el controlador externo. Each linear conveyor in turn comprises a mobile belt that moves linearly driven by the motor. The speed and direction of movement of the belt, as indicated above, can be regulated by the external controller.

Las cintas inferiores actúan como apoyos para el elemento a desplazar hacia la cinta de corte, y se disponen en el bastidor de forma paralela entre sí y ligeramente distanciadas lateralmente para permitir el paso de la sierra de corte. Asimismo, las cintas superiores se sitúan paralelamente entre sí y superpuestas parcialmente a las inferiores, y presionan al elemento situado en la cinta inferior, aumentando de esa forma la precisión del corte efectuado. La sierra de corte se sitúa en la franja de separación definida entre las dos cintas superiores y las dos cintas inferiores, para incidir sobre el elemento a cortar. The lower belts act as supports for the element to be moved towards the cutting belt, and are arranged in the frame parallel to each other and slightly spaced laterally to allow passage of the cutting saw. Also, the upper bands are placed parallel to each other and partially superimposed on the lower ones, and press the element located on the lower belt, thereby increasing the precision of the cut made. The cutting saw is located in the defined separation strip between the two upper bands and the two lower bands, to influence the element to be cut.

Las cintas pueden moverse en igual dirección, dirigiendo al producto hacia la sierra de corte, y una vez ya cortado pueden invertir el sentido de su desplazamiento para aproximarlo hacia una zona de recogida. The belts can move in the same direction, directing the product towards the cutting saw, and once cut they can reverse the direction of their movement to approximate it towards a collection area.

Se contempla asimismo la agrupación del controlador externo con una pluralidad de elementos auxiliares adicionales, como selectores de movimiento, variadores o módulos de seguridad, en un cuadro eléctrico dotado de elementos de accionamiento tales como una pantalla táctil. The grouping of the external controller with a plurality of additional auxiliary elements, such as motion selectors, variators or safety modules, is also contemplated in an electrical panel provided with actuating elements such as a touch screen.

DESCRIPCIÓN DE LOS DIBUJOS DESCRIPTION OF THE DRAWINGS

Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con un ejemplo preferente de realización práctica de la misma, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:

Figura 1.- Muestra una vista en perspectiva del dispositivo acoplado en una sierra de cinta. Figure 1.- Shows a perspective view of the device coupled in a bandsaw.

Figura 2.- Muestra un detalle del dispositivo acoplado en la sierra de cinta. Figure 2.- Shows a detail of the device attached to the bandsaw.

Figura 3.- Muestra una vista de un transportador lineal superior del dispositivo. Figure 3.- Shows a view of an upper linear conveyor of the device.

Figura 4.- Muestra una vista de un transportador lineal inferior del dispositivo. Figure 4.- Shows a view of a lower linear conveyor of the device.

REALIZACIÓN PREFERENTE DE LA INVENCIÓN PREFERRED EMBODIMENT OF THE INVENTION

Seguidamente se proporciona, con ayuda de las figuras anteriormente referidas, una explicación detallada de un ejemplo de realización preferente del objeto de la presente invención. Next, a detailed explanation of a preferred embodiment of the object of the present invention is provided with the aid of the aforementioned figures.

El dispositivo de seguridad de sierras de cinta que se describe está destinado a acoplarse a una mesa de corte (1) de una sierra de cinta, para desplazar de manera automática y precisa a un elemento a cortar hasta la sierra de corte (2), como se ilustra en la figura 1, evitando la necesidad de hacerlo manual y previendo de esa manera posibles accidentes. Para ello, el dispositivo está conformado por un bastidor (3) acoplable a la mesa de corte (1), bastidor (3) que sustenta unos transportadores lineales inferiores (4) y unos transportadores lineales superiores (5), estando cada uno de dichos transportadores lineales (4,5) equipados con un correspondiente motor (6) de accionamiento, dotado de un variador de velocidad y un inversor de giro. Un controlador externo, no representado en las figuras adjuntas, gobierna el funcionamiento de dichos motores (6), y por tanto de los transportadores lineales (4,5), tanto en la velocidad como en el sentido de su giro. The band saws safety device described is intended to be coupled to a cutting table (1) of a band saw, to automatically and accurately move an element to be cut to the cutting saw (2), as illustrated in figure 1, avoiding the need to do it manually and thus preventing possible accidents. For this, the device is formed by a frame (3) attachable to the cutting table (1), frame (3) that supports lower linear conveyors (4) and upper linear conveyors (5), each of said being Linear conveyors (4,5) equipped with a corresponding drive motor (6), equipped with a speed variator and a turning inverter. An external controller, not shown in the attached figures, governs the operation of said motors (6), and therefore of the linear conveyors (4,5), both in speed and in the direction of their rotation.

En la realización preferente aquí mostrada, el controlador consiste en un controlador lógico programable, más comúnmente referido por sus siglas en inglés como PLC, y el motor (6) es un servomotor. In the preferred embodiment shown here, the controller consists of a programmable logic controller, more commonly referred to by its acronym in English as PLC, and the motor (6) is a servomotor.

El bastidor (3) está conformado por una estructura reticular que comprende unas traviesas (7) inferiores, a las cuales se vinculan los transportadores lineales inferiores (4). De dichas traviesas (7) parten superiormente unas columnas (8) verticales, a las cuales se vinculan los transportadores lineales superiores (5) a través de unos perfiles (9) horizontales acoplables a las columnas (8). Cada una de las columnas (8) presenta a su vez una pluralidad de alojamientos (10) para permitir el acoplamiento de los perfiles (9) a distintas alturas, facilitando de esa manera una regulación manual de la separación vertical entre los transportadores lineales superiores (5) y los inferiores (4), en función de factores funcionales como el elemento a cortar o el tipo de corte a realizar por la sierra de corte (2). The frame (3) is formed by a reticular structure comprising lower sleepers (7), to which the lower linear conveyors (4) are linked. From said sleepers (7), superiorly split vertical columns (8), to which the upper linear conveyors (5) are linked through horizontal profiles (9) attachable to the columns (8). Each of the columns (8) in turn has a plurality of housings (10) to allow the coupling of the profiles (9) at different heights, thus facilitating a manual regulation of the vertical separation between the upper linear conveyors ( 5) and the lower ones (4), depending on functional factors such as the element to be cut or the type of cut to be made by the cutting saw (2).

El dispositivo comprende al menos dos transportadores lineales inferiores (4) vinculados al bastidor (3), paralelos entre sí y distanciados lateralmente, creando una ranura entre ellos que permite que la sierra de corte (2) quede situada centrada entre ambos. Como se ilustra en la figura 4, cada transportador lineal inferior (4) presenta una cinta inferior The device comprises at least two lower linear conveyors (4) linked to the frame (3), parallel to each other and laterally spaced apart, creating a groove between them that allows the cutting saw (2) to be centered between them. As illustrated in Figure 4, each lower linear conveyor (4) has a lower belt

5 (11) móvil vinculada a unos rodillos (12) giratorios, accionados por el motor (6). Puesto que, como se ha indicado anteriormente, el motor (6) puede girar en ambos sentidos, y por tanto la cinta (11), sobre la cual se deposita el elemento a cortar, puede desplazar también en dos sentidos, el transportador lineal inferior (4) incorpora elementos de tensado, no representados en las figuras adjuntas, para evitar posibles atascos. 5 (11) mobile linked to rotating rollers (12), driven by the motor (6). Since, as indicated above, the motor (6) can rotate in both directions, and therefore the belt (11), on which the element to be cut is deposited, can also move the lower linear conveyor in two directions. (4) incorporates tensioning elements, not shown in the attached figures, to avoid possible jams.

10 El dispositivo comprende al menos dos transportadores lineales superiores (5), paralelos entre sí y distanciados lateralmente, creando una ranura entre ellos que queda enfrentada superiormente a la ranura definida entre los dos transportadores lineales inferiores (4) para permitir el paso de la sierra de corte (2). Cada transportador lineal The device comprises at least two upper linear conveyors (5), parallel to each other and laterally spaced apart, creating a groove between them that is superiorly facing the groove defined between the two lower linear conveyors (4) to allow the saw to pass cutting (2). Each linear conveyor

15 superior (5) presenta una cinta superior (13) móvil, de longitud inferior a las cintas inferiores (11), así como incorpora unos acoplamientos (14) destinados a albergar los perfiles (9) de vinculación con las columnas (8) del bastidor (3). 15 upper (5) has a mobile upper belt (13), shorter than the lower belts (11), as well as incorporates couplings (14) intended to house the profiles (9) linking with the columns (8) of the frame (3).

La cinta superior (13), enfrentable a una de las correspondientes cintas inferiores (11), The upper belt (13), facing one of the corresponding lower bands (11),

20 está destinada a presionar superiormente al el elemento a cortar depositado sobre dicha cinta inferior (11), para mejorar la precisión del corte. Para ello, se prevé que las columnas (8) incorporen unos elementos elásticos (15) para facilitar el ajuste de la cinta superior (13) a las dimensiones del elemento a cortar. En esta realización preferente dichos elementos elásticos (15) consisten en unos muelles , mostrados en las figuras 1 y 20 is intended to press the cutting element deposited on said lower belt (11) superiorly to improve the accuracy of the cut. For this, it is envisaged that the columns (8) incorporate elastic elements (15) to facilitate the adjustment of the upper belt (13) to the dimensions of the element to be cut. In this preferred embodiment said elastic elements (15) consist of springs, shown in figures 1 and

25 2,que suben y bajan ligeramente a la cinta superior (13) para aproximarla o alejarla del elemento y así ejercer una mayor o menor presión superficial sobre él. En una segunda realización preferente, los elementos elásticos (15) consisten en unos pistones neumáticos. 25 2, which rise and fall slightly to the upper belt (13) to bring it closer or further away from the element and thus exert a greater or lesser surface pressure on it. In a second preferred embodiment, the elastic elements (15) consist of pneumatic pistons.

Claims (5)

REIVINDICACIONES 1. Dispositivo de seguridad de sierras de cinta, acoplable a una mesa de corte (1) de una sierra de cinta para desplazamiento automático de un elemento a cortar hasta una sierra de corte (2) vertical, estando el dispositivo caracterizado porque comprende: 1. Tape saws safety device, attachable to a cutting table (1) of a band saw for automatic movement of an element to be cut up to a vertical cutting saw (2), the device being characterized in that it comprises:
--
un bastidor (3) acoplable a la mesa de corte (1) que comprende a su vez: a frame (3) attachable to the cutting table (1) which in turn comprises:
--
unas traviesas (7) inferiores,  lower sleepers (7),
--
unas columnas (8) verticales que parten superiormente de las traviesas (7), en el que cada columna presenta una pluralidad de alojamientos (10), y vertical columns (8) that depart superiorly from the sleepers (7), in which each column has a plurality of housings (10), and
--
unos perfiles (9) horizontales acoplables perpendicularmente a los alojamientos (10) de las columnas (8),  horizontal profiles (9) perpendicular to the housings (10) of the columns (8),
--
al menos dos transportadores lineales inferiores (4) vinculados a las traviesas (7), paralelos entre sí y distanciados lateralmente para paso de la sierra de corte (2), en el que cada uno de los transportadores lineales inferiores (4) presenta:  at least two lower linear conveyors (4) linked to the sleepers (7), parallel to each other and laterally spaced apart for the cutting saw (2), in which each of the lower linear conveyors (4) has:
--
un motor (6) de accionamiento, dotado de un variador de velocidad y un inversor de giro,  a drive motor (6), equipped with a speed variator and a rotation inverter,
--
una cinta inferior (11) móvil, accionada por el motor (6) para apoyo del elemento a cortar,  a mobile lower belt (11), driven by the motor (6) to support the element to be cut,
--
al menos dos transportadores lineales superiores (5), paralelos entre sí, enfrentables superiormente a los correspondientes transportadores lineales inferiores (4), y distanciados lateralmente para paso de la sierra de corte (2), en el que cada uno de los transportadores lineales superiores (5) presenta:  at least two upper linear conveyors (5), parallel to each other, confrontable superiorly to the corresponding lower linear conveyors (4), and laterally spaced for passage of the cutting saw (2), in which each of the upper linear conveyors (5) presents:
--
el motor de accionamiento (6), dotado de un variador de velocidad y un inversor de giro,  the drive motor (6), equipped with a speed variator and a rotation inverter,
--
una cinta superior (13) móvil accionada por el motor (6) para presión sobre el elemento a cortar depositado sobre la correspondiente cinta inferior (11), y  a moving upper belt (13) driven by the motor (6) for pressure on the cutting element deposited on the corresponding lower belt (11), and
--
unos acoplamientos (14) destinados a albergar los perfiles (9), y  couplings (14) intended to house the profiles (9), and
--
un controlador externo para control de la velocidad y sentido de giro de cada uno de los motores (6) de los transportadores lineales inferiores (4) y superiores (5).  an external controller for controlling the speed and direction of rotation of each of the motors (6) of the lower (4) and upper (5) linear conveyors.
2. Dispositivo de seguridad de acuerdo con la reivindicación 1 caracterizado porque las cintas superiores (13) tienen unas dimensiones longitudinales inferiores a las de las 2. Safety device according to claim 1 characterized in that the upper belts (13) have longitudinal dimensions smaller than those of the cintas inferiores (11). lower ribbons (11). 3. Dispositivo de seguridad de acuerdo con cualquiera de las reivindicaciones 3. Security device according to any of the claims anteriores caracterizado porque incorpora unos elementos elásticos (15) para 5 aproximación o alejamiento de la cinta superior (13) respecto de la cinta inferior (11). previous characterized in that it incorporates elastic elements (15) for approximation or distance of the upper belt (13) with respect to the lower belt (11). 4. Dispositivo de seguridad de acuerdo con la reivindicación 3 caracterizado porque los elementos elásticos (15) son muelles. 4. Safety device according to claim 3 characterized in that the elastic elements (15) are springs. 10 5. Dispositivo de seguridad de acuerdo con la reivindicación 3 caracterizado porque los elementos elásticos (15) son pistones neumáticos. 10. Safety device according to claim 3 characterized in that the elastic elements (15) are pneumatic pistons. 6. Dispositivo de seguridad de acuerdo con una cualquiera de las reivindicaciones 6. Security device according to any one of the claims anteriores caracterizado porque el controlador externo es un controlador lógico 15 programable. previous characterized in that the external controller is a programmable logic controller 15. DIBUJOS  DRAWINGS  
ES201830196U 2018-02-15 2018-02-15 TAPE SAW SAFETY DEVICE Active ES1206461Y (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110696102A (en) * 2019-09-25 2020-01-17 江苏东巨机械科技有限公司 Woodworking band sawing machine convenient for folding object placing plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110696102A (en) * 2019-09-25 2020-01-17 江苏东巨机械科技有限公司 Woodworking band sawing machine convenient for folding object placing plate

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Effective date: 20180518