ES2224937T3

ES2224937T3 - PADDING MACHINE WITH VARIABLE SEPARATION STITCHES.

Info

Publication number: ES2224937T3
Application number: ES00104573T
Authority: ES
Inventors: Roberto Resta
Original assignee: Resta SRL
Current assignee: Resta SRL
Priority date: 2000-03-14
Filing date: 2000-03-14
Publication date: 2005-03-16
Anticipated expiration: 2020-03-14
Also published as: DE60012476D1; EP1136610A1; EP1136610B1; DE60012476T2

Abstract

Máquina de acolchado que comprende un bastidor (1) compuesto de un primer larguero (2) dispuesto horizontalmente sobre una tela (7) a acolchar y un segundo larguero (3) dispuesto por debajo de dicha tela (7), estando dichos largueros (2, 3) provistos con guías respectivas (8, 9; 24, 25) para los transportadores (10, 11; 20, 21) para soportar los cabezales de costura (12, 13) y, respectivamente, un montaje de gancho (18, 19) de al menos dos hilvanadores (14, 15), uno (15) de los cuales está provisto con medios para mover uno de los cabezales de costura (13) y el montaje de gancho (19) de forma sincronizada y a lo largo de una misma trayectoria y con la misma orientación, caracterizada por el hecho de que los transportadores (11, 21) que soportan dicho cabezal de costura (13) y el montaje de gancho (19) de un primer hilvanador (15) soportan respectivos elementos de motor (46, 48, 50; 47, 49, 51) conectados entre los transportadores (11, 21) que soportan el primer hilvanador (15) y los transportadores (10, 20) que soportan otro de los cabezales de costura (12) y el montaje de gancho (18) de un segundo cabezal de costura (14) para un movimiento sincronizado de los transportadores (10, 20) que soportan el segundo hilvanador (14) acercándolo o alejándolo de los correspondientes transportadores (11, 21) que soportan el primer hilvanador (15), y donde cuando dichos elementos de motor no se están moviendo, el primer y el segundo hilvanador se mueven juntos.Quilting machine comprising a frame (1) composed of a first stringer (2) arranged horizontally on a quilted fabric (7) and a second stringer (3) disposed below said fabric (7), said stringers (2) being , 3) provided with respective guides (8, 9; 24, 25) for the conveyors (10, 11; 20, 21) to support the sewing heads (12, 13) and, respectively, a hook assembly (18, 19) of at least two spinners (14, 15), one (15) of which is provided with means for moving one of the sewing heads (13) and the hook assembly (19) synchronously and along the same trajectory and with the same orientation, characterized by the fact that the conveyors (11, 21) that support said sewing head (13) and the hook assembly (19) of a first spinner (15) support respective elements of motor (46, 48, 50; 47, 49, 51) connected between the conveyors (11, 21) that support the first spinner (15) and the s conveyors (10, 20) that support another of the sewing heads (12) and the hook assembly (18) of a second sewing head (14) for synchronized movement of the conveyors (10, 20) that support the second spinner (14) approaching or moving away from the corresponding conveyors (11, 21) that support the first spinner (15), and where when said motor elements are not moving, the first and the second spinner move together.

Description

Máquina de acolchado con puntadas de separación variable.Quilting machine with separation stitches variable.

La presente invención se refiere a una máquina de acolchado con hilvanadores de espaciado variable.The present invention relates to a machine of padded with variable spacer spinners.

Se conoce que una máquina de acolchado comprende un transportador de soporte de la tela y una pluralidad de hilvanadores que acolcharán la tela según un diseño preestablecido.It is known that a quilting machine comprises a fabric support conveyor and a plurality of spinners that will cushion the fabric according to a design preset

En las máquinas de acolchado, el transportador de soporte de la tela y los hilvanadores realizan movimientos relativos que permitirán que la aguja de costura se mueva sobre la tela con dos grados de libertad para formar una línea de puntadas que siguen el diseño proyectado.In quilting machines, the conveyor of fabric support and spinners perform relative movements that will allow the sewing needle to move over the fabric with two degrees of freedom to form a line of stitches that follow The projected design.

En las máquinas de acolchado, los hilvanadores están montados sobre un bastidor que comprende un primer larguero que se ubica sobre la tela y un segundo larguero que es paralelo al primer larguero y que se ubica por debajo de la tela.In quilting machines, spinners they are mounted on a frame comprising a first stringer which is located on the fabric and a second crossbar that is parallel to the first stringer and located below the fabric.

El primer larguero soporta una guía para el cabezal de costura del hilvanador, mientras que el segundo larguero soporta una guía para el llamado montaje de gancho.The first stringer supports a guide for the sewing head of the spinner, while the second stringer It supports a guide for the so-called hook assembly.

Para permitir que la aguja de costura actúe en cooperación con el montaje de gancho, se proporcionan transmisiones mecánicas y/o conexiones eléctricas de forma que la aguja de costura se mueve acompasadamente, y en perfecta alineación vertical, con el montaje de gancho durante sus movimientos sobre la tela.To allow the sewing needle to act on cooperation with hook mounting, transmissions are provided mechanical and / or electrical connections so that the sewing needle it moves together, and in perfect vertical alignment, with the Hook assembly during your movements on the fabric.

Las máquinas de acolchado convencionales tienen limitaciones operativas cuando es necesario manejar una pluralidad de hilvanadores que operan de manera independiente unos de otros de forma que cada uno sigue una trayectoria individual. Debido a estas dificultades, los hilvanadores se hallan en su mayor parte conectados rígidamente unos a otros y sólo pueden seguir trayectorias paralelas.Conventional quilting machines have operational limitations when it is necessary to handle a plurality of spinners that operate independently of each other in so that each one follows an individual path. Because of these difficulties, the spinners are mostly rigidly connected to each other and can only follow parallel paths.

La Patente EP-A-0 931 867 describe una máquina de acolchado con un par de hilvanadores mutuamente espaciados (12a, 12b) soportados por medio de respectivos transportadores, cada uno accionado individualmente por medio de su propio motor lineal controlado por medio de un control numérico computarizado.EP-A-0 Patent 931 867 describes a quilting machine with a pair of spinners mutually spaced (12a, 12b) supported by means of respective conveyors, each individually operated by means of its own linear motor controlled by means of a numerical control computerized

La Patente US-A-5 287 820 describe una máquina de coser con un par de hilvanadores mutuamente espaciados uno de otro por medio de una distancia predeterminada seleccionable y soportados sobre un mecanismo común de conducción que mueve en forma simultánea el par de hilvanadores juntos.US-A-5 Patent 287 820 describes a sewing machine with a pair of spinners mutually spaced each other by means of a distance default selectable and supported on a common mechanism of driving that simultaneously moves the pair of spinners together.

Por lo tanto, el objetivo de la presente invención es proporcionar una máquina de acolchado que no sufra las desventajas convencionales, es decir, que comprenda una pluralidad de hilvanadores que pueden accionarse de forma tal que operen independientemente unos de otros para trazar líneas de puntadas convergentes y divergentes.Therefore, the objective of this invention is to provide a quilting machine that does not suffer from conventional disadvantages, that is, that it comprises a plurality of spinners that can be operated in such a way that they operate independently of each other to draw stitch lines convergent and divergent.

Según la invención, se proporciona una máquina de acolchado como se define en las reivindicaciones adjuntas.According to the invention, a machine is provided padding as defined in the appended claims.

Características y ventajas adicionales de la presente invención serán evidentes a partir de la siguiente descripción de una realización preferida, ilustrada sólo a modo de ejemplo no limitante en el dibujo adjunto, donde la única figura es una vista en perspectiva de un bastidor de soporte para dos hilvanadores de una máquina de acolchado.Additional features and advantages of the present invention will be apparent from the following description of a preferred embodiment, illustrated only by way of non-limiting example in the attached drawing, where the only figure is a perspective view of a support frame for two spinners of a quilting machine.

Con referencia a la figura anterior, la referencia numérica 1 designa un bastidor de una máquina de acolchado, que está compuesto de dos largueros horizontales 2 y 3 que se hallan mutuamente superpuestos y que están conectados, en sus extremos opuestos, por medio de dos respectivos montantes verticales 4 y 5.With reference to the previous figure, the numerical reference 1 designates a frame of a machine padded, which is composed of two horizontal stringers 2 and 3 that are mutually overlapping and that are connected, in their opposite ends, by means of two respective vertical uprights 4 and 5.

Los largueros 2 y 3 y los montantes 4 y 5 encierran una abertura 6 a través de la cual se alimenta una tela 7 a acolchar. Por causa de la claridad de presentación, se supone que la tela 7 se extiende en forma horizontal sobre un bastidor (no mostrado) que es móvil en una dirección longitudinal A en ángulos rectos al bastidor 1.The stringers 2 and 3 and the uprights 4 and 5 they enclose an opening 6 through which a fabric 7 is fed to quilting Because of the clarity of presentation, it is assumed that the fabric 7 extends horizontally on a frame (not shown) which is mobile in a longitudinal direction A at angles straight to the frame 1.

Dos barras cilíndricas mutuamente paralelas 8 y 9 se hallan fijadas a los extremos del larguero superior 2 y están espaciadas del larguero. Las barras 8 y 9 forman una guía a lo largo de la cual los transportadores 10 y 11 son deslizantes a lo largo de una trayectoria transversal B que es perpendicular a la trayectoria A; dichos transportadores soportan cabezales de costura 12 y 13 de dos hilvanadores, generalmente designados por medio de las referencias numéricas 14 y 15. El deslizamiento de cada transportador sobre las barras 8 y 9 se realiza por medio de dos pares de rodillos libres, siendo los superiores designados por medio de la referencia numérica 16 y siendo los inferiores designados por medio de la referencia numérica 17. Los rodillos 16 y 17 están provistos de una ranura a lo largo de su región periférica y se acoplan tangencialmente por encima y por debajo de las barras 8 y 9.Two mutually parallel cylindrical bars 8 and 9 they are fixed to the ends of the upper beam 2 and are spaced from the crossbar. Bars 8 and 9 form a guide along of which the conveyors 10 and 11 are sliding along a transverse path B that is perpendicular to the path TO; said conveyors support sewing heads 12 and 13 of two spinners, generally designated by means of numerical references 14 and 15. The slip of each conveyor on bars 8 and 9 is done by means of two pairs of free rollers, the superiors being designated by means of numerical reference 16 and the lower ones being designated by middle of numerical reference 17. Rollers 16 and 17 are provided with a groove along its peripheral region and it couple tangentially above and below bars 8 and 9.

Los hilvanadores 14 y 15 comprenden montajes de gancho 18 y 19 que se accionan de forma sincronizada con los respectivos cabezales de costura 12 y 13. Los montajes de gancho están montados sobre transportadores 20 y 21 que, gracias a pares de ruedas ranuradas superiores 22 y pares de ruedas ranuradas inferiores 23, son deslizantes sobre dos barras 24 y 25 que están fijas, por medio de sus extremos opuestos, al larguero inferior 3, paralelo a las partes superiores 8 y 9.The spinners 14 and 15 comprise assemblies of hook 18 and 19 that are operated synchronously with the respective sewing heads 12 and 13. The hook mounts they are mounted on conveyors 20 and 21 which, thanks to pairs of 22 top slotted wheels and slotted wheel pairs lower 23, are sliding on two bars 24 and 25 that are fixed, by means of their opposite ends, to the lower beam 3, parallel to the upper parts 8 and 9.

Los hilvanadores 14 y 15 se mueven a lo largo de la trayectoria transversal B sobre la tela 7 por medio de la conexión mecánica de los transportadores 10 y 20 del hilvanador 14 a los respectivos transportadores 11 y 21 del hilvanador 15 y accionando en forma sincronizada dichos transportadores.The spinners 14 and 15 move along the transverse path B on the fabric 7 by means of the mechanical connection of conveyor 10 and 20 of spinner 14 a the respective conveyors 11 and 21 of the spinner 15 and synchronously operating said conveyors.

Los transportadores 11 y 21 son accionados por medio de una correa flexible y no extensible 26, hecha por ejemplo de acero, cuyos extremos están fijados a dos elementos en forma de L 27 y 28, estando el elemento en forma de L 27 rígidamente fijado al transportador 11. El otro elemento en forma de L 28 está provisto de un vástago roscado 29 que sobresale hacia el elemento en forma de L 27 y es guiado por medio de dos abrazaderas 30 y 31 que están fijadas al transportador 21.Conveyors 11 and 21 are driven by means of a flexible and non-extensible strap 26, made for example of steel, whose ends are fixed to two L-shaped elements 27 and 28, the L-shaped element 27 being rigidly fixed to the Conveyor 11. The other L-shaped element 28 is provided with a threaded rod 29 protruding towards the L-shaped element 27 and is guided by two clamps 30 and 31 that are fixed to the conveyor 21.

Una tuerca 32 con un respectivo cierre de tuerca se atornilla sobre el extremo del vástago 29 que sobresale más allá de la abrazadera 30, para proporcionar un extensor de tipo tornillo que tensiona la correa 7 por medio del accionamiento sobre el elemento en forma de L 28.A nut 32 with a respective nut closure it is screwed onto the end of the stem 29 that protrudes beyond of the clamp 30, to provide a screw type extender tensioning the belt 7 by means of the drive on the L-shaped element 28.

La correa 7 está enrollada en un bucle cerrado alrededor de cuatro poleas guías 33, 34, 35 y 36 y una polea conductora 37. Las poleas guías 33-36 están dispuestas en las esquinas de un rectángulo imaginario en los extremos opuestos de los largueros 2 y 3. La polea conductora 37 está soportada en el montante 3 entre las poleas 34 y 36, de forma que la correa 26 corre a lo largo de una trayectoria en zigzag con cuatro porciones paralelas, superpuestas y coplanares 38, 39, 40 y 41, moviéndose las porciones 38 y 40 de la misma en la misma dirección, que es opuesta a la dirección de las porciones 39 y 41.The belt 7 is wound in a closed loop around four guide pulleys 33, 34, 35 and 36 and a pulley conductive 37. Guide pulleys 33-36 are arranged in the corners of an imaginary rectangle in the opposite ends of stringers 2 and 3. The driving pulley 37 it is supported on the post 3 between pulleys 34 and 36, so that the belt 26 runs along a zigzag path with four parallel, overlapping and coplanar portions 38, 39, 40 and 41, moving portions 38 and 40 thereof therein address, which is opposite the direction of portions 39 and 41.

El transportador 21 del hilvanador 15 se fija a la porción 40 por medio de una abrazadera 42, de forma que dos transportadores 11 y 21 se mueven de forma correspondiente en la dirección de accionamiento de la correa 26.The conveyor 21 of the spinner 15 is fixed to the portion 40 by means of a clamp 42, so that two conveyors 11 and 21 move correspondingly in the belt drive direction 26.

Para el accionamiento de la correa 26, la polea 37 está provista de un engranaje de anillo 43 con el cual engrana un piñón 44 de un motor eléctrico 45 que está montado sobre una abrazadera (no mostrada) que sobresale por fuera del bastidor 1.To drive the belt 26, the pulley 37 is provided with a ring gear 43 with which a gear pinion 44 of an electric motor 45 that is mounted on a clamp (not shown) protruding from outside frame 1.

El movimiento se transmite desde el hilvanador 15 al hilvanador 14 por medio de dos motores eléctricos reversibles 46 y 47 que están montados sobre los transportadores 11 y 21 y cuyos ejes están constituidos por medio de varillas roscadas 48 y 49 que tienen el mismo grado de inclinación, extendiéndose entre las porciones 38, 39 y 40, 41 de la correa 26, y siendo paralelos a las barras 8, 9 y 24, 25.The movement is transmitted from the spinner 15 to the spinner 14 by means of two reversible electric motors 46 and 47 that are mounted on conveyors 11 and 21 and whose shafts are constituted by means of threaded rods 48 and 49 that they have the same degree of inclination, extending between portions 38, 39 and 40, 41 of the belt 26, and being parallel to the bars 8, 9 and 24, 25.

Las varillas roscadas están enganchadas en roscas hembras 50, 51 que están fijadas a los transportadores 10, 20 del hilvanador 14. Los motores 46, 47 están controlados de forma de moverse con la misma velocidad angular en la misma dirección.Threaded rods are hooked on threads females 50, 51 that are attached to the conveyors 10, 20 of the spinner 14. The engines 46, 47 are controlled so move with the same angular velocity in the same direction.

El funcionamiento de la máquina de acolchado es evidente a partir de la descripción anterior. Cuando los motores 46 y 47 no se están moviendo, el control del motor 45 permite mover la máquina de acolchado 15 en una dirección o la otra a lo largo de la trayectoria transversal B y por lo tanto para mover también en la misma dirección, por medio de las varillas 48 y 49, la máquina de acolchado 14, de forma de proporcionar dos líneas paralelas de puntadas sobre la tela 7.The operation of the quilting machine is evident from the previous description. When the engines 46 and 47 are not moving, motor control 45 allows moving the quilting machine 15 in one direction or the other along the transverse path B and therefore to also move in the same direction, by means of rods 48 and 49, the machine padding 14, so as to provide two parallel lines of stitches on the fabric 7.

Sin embargo, por medio del accionamiento de los motores 46 y 47 es posible mover en forma simultánea los transportadores 10, 20 del hilvanador 14 acercándolo o alejándolo de los correspondientes transportadores 11 y 21 del hilvanador 15, manteniendo el cabezal de costura 12 en perfecta alineación vertical con el respectivo montaje de gancho 18. Por lo tanto, los hilvanadores 14 y 15 pueden moverse mutuamente más cerca o más lejos durante su movimiento relativo con respecto a la tela y pueden formar dos líneas de puntadas que siguen cualquier trayectoria convergente o divergente una respecto a la otra.However, by means of the actuation of the engines 46 and 47 it is possible to simultaneously move the conveyors 10, 20 of the spinner 14 approaching or moving away from the corresponding conveyors 11 and 21 of the spinner 15, keeping sewing head 12 in perfect vertical alignment with the respective hook assembly 18. Therefore, the spinners 14 and 15 can move each other closer or further during their relative movement with respect to the fabric and can form two stitch lines that follow any path convergent or divergent with respect to each other.

En la realización práctica de la máquina de acolchado, son posibles numerosas modificaciones y variaciones dentro del ámbito del mismo concepto inventivo. Por ejemplo, es posible instalar un tercer hilvanador sobre las guías 8, 9, 24, 25 que está controlado como el hilvanador 14 proporcionando sobre los transportadores 11, 21 del hilvanador 15 dos motores adicionales que conducen dos varillas roscadas que se acoplan, con un acoplamiento roscado, respectivas roscas hembras que están fijadas a los transportadores del tercer hilvanador. Ventajosamente, la rosca hembra es del tipo de tornillo de bola. Otra realización utiliza, en lugar de las varillas roscadas 48 y 49, cremalleras respectivas que tienen un extremo fijado a los transportadores 10 y 20 y se engranan con piñones que están adaptados en los ejes de salida de los motores 46 y 47.In the practical realization of the machine padded, numerous modifications and variations are possible within the scope of the same inventive concept. For example, it is possible to install a third spinner on guides 8, 9, 24, 25 which is controlled as the spinner 14 providing on the conveyor 11, 21 of the spinner 15 two additional engines that they drive two threaded rods that are coupled, with a coupling threaded, respective female threads that are fixed to the conveyors of the third spinner. Advantageously, the thread Female is the type of ball screw. Another embodiment uses, in place of threaded rods 48 and 49, respective zippers that they have one end fixed to conveyors 10 and 20 and they engage with pinions that are adapted in the motor output shafts 46 and 47.

Todos los detalles pueden además reemplazarse con otros elementos técnicamente equivalentes.All details can also be replaced with other technically equivalent elements.

En la práctica, los materiales empleados, así como las dimensiones, pueden ser cualesquiera según los requerimientos y el estado de la técnica.In practice, the materials used as well As the dimensions, they can be any according to the requirements and state of the art.

Donde las características técnicas mencionadas en cualquier reivindicación están seguidas por signos de referencia, esos signos de referencia se han incluido con el único propósito de incrementar la inteligibilidad de las reivindicaciones y por lo tanto dichos signos de referencia no tienen ningún efecto limitante en la interpretación de cada elemento identificado a modo de ejemplo por medio de dichos signos de referencia.Where the technical characteristics mentioned in any claims are followed by reference signs, those reference signs have been included for the sole purpose of increase the intelligibility of the claims and therefore both said reference signs have no limiting effect in the interpretation of each element identified by way of example by means of said reference signs.

Claims

1. Quilting machine comprising a frame (1) composed of a first stringer (2) arranged horizontally on a quilted fabric (7) and a second stringer (3) disposed below said fabric (7), said stringers being (2, 3) provided with respective guides (8, 9; 24, 25) for the conveyors (10, 11; 20, 21) to support the sewing heads (12, 13) and, respectively, a hook assembly ( 18, 19) of at least two spinners (14, 15), one (15) of which is provided with means to move one of the sewing heads (13) and the hook assembly (19) in a synchronized manner. along the same path and with the same orientation, characterized by the fact that the conveyors (11, 21) that support said sewing head (13) and the hook assembly (19) of a first spinner (15) support respective motor elements (46, 48, 50; 47, 49, 51) connected between the conveyors (11, 21) that support the first spinner (15) and the conveyors (10, 20) that support another of the sewing heads (12) and the hook assembly (18) of a second sewing head (14) for synchronized movement of the conveyors (10, 20) that support the second spinner (14) approaching or moving away from the corresponding conveyors (11, 21) that support the first spinner (15), and where when said motor elements are not moving, the first and the second spinner move together.

2. Quilting machine according to claim 1, characterized in that said motor elements comprise electric motors (46, 47) which are supported on the support conveyors (11, 21) of said sewing heads (13) and of the hook assembly (19) of said first spinner (15) and are adapted to drive respective threaded rods (48, 49) that are parallel and are rotatably coupled in female threads (50, 51) that are supported on the conveyors (10 , 20) supporting said other sewing heads (12) and hook assembly (18) of the second spinner (14).

3. Quilting machine according to claim 1, characterized in that said motor elements comprise electric motors that are supported on the conveyors (11, 21) that support said sewing heads (13) and hook assembly (19 ) of said first spinner (15) and are adapted to drive respective zippers that are parallel and have an end that is fixed to the conveyors (10, 20) that supports said other sewing heads (12) and the hook assembly ( 18) of said second spinner (14).

4. Quilting machine according to claim 2, characterized in that for the operation of said first spinner (15) there is a flexible and non-extensible belt (26) having a point (27) fixed to a conveyor (11) of said first spinner (15) and wound in a closed loop around four guide pulleys (33, 34, 35, 36) and a driving pulley (37), said guide pulleys (33, 34, 35, 36) being arranged on said frame (1) in the corners of an imaginary rectangle and said driving pulley (37) being arranged between two overlapping guide pulleys (34, 36) so that said belt (26) is wound along four parallel, coplanar and superimposed portions (38, 39, 40, 41) that move in the same direction in pairs, the conveyors (11, 21) being to support said sewing heads (13) and, respectively, the hook assembly (19) of said first spinner (15) fixed to two (38, 40) of said portions which They move in the same direction.

5. Quilting machine according to claim 4, characterized in that two electric motors (46, 47) of the reversible type are mounted on said conveyors (11, 21), their axes comprising threaded rods (48, 49) having the same degree of inclination and are parallel to said portions (38, 39, 40, 41) of the belt (26) and are coupled to female threads (50, 51) that are fixed to the conveyors (10, 20) that support said others of the sewing heads (12) and the hook assembly (18) of said second spinner (14), said electric motors (46, 47) being controlled so as to move said conveyors (10, 20) therewith speed and in the same direction.

6. Quilting machine according to claim 4, characterized in that two electric motors (46, 47) of the reversible type are mounted on said conveyors (11, 21), their axes being provided with pinions that engage with zippers that are parallel to said portions (38, 39, 40, 41) of the belt (26) and have ends that are fixed to the conveyors (10, 20) that support said other sewing heads (12) and the hook assembly (18 ) of said second spinner (14), said motors being controlled so as to move said conveyors (10, 20) with the same speed in the same direction.

7. Quilting machine according to claim 5, characterized in that it comprises a third spinner that is controlled by providing, on the conveyors (11, 21) of said first spinner (15), two additional motors for driving two threaded rods that engage, with a threaded coupling, respective female threads that are fixed to the conveyors that support the sewing head and the hook assembly of said third spinner.

8. Quilting machine according to claim 2, characterized in that said female threads (50, 51) are of the ball screw type.

9. Quilting machine according to claim 4, characterized in that said driving pulley (37) is provided with a ring gear (43) with which the pinion (44) of a drive motor (45) meshes. .