Abrégé

The invention relates to a method for creating a filter hose unit (1) for a filter system (3) for filtering dust and/or smoke-laden gases, in which, in the region of two parallel longitudinal edges of a flexible textile workpiece, a seam is created for connecting the two regions of the longitudinal edges and the textile workpiece is thereby formed into a flexible tube of a filter hose (2), an at least approximately circular base part (22) is attached to an end side of the tubular filter hose (2) created in this way by means of a welding method, in order to close the filter hose (2) in the region of its base, and a wire frame (4) is introduced into the filter hose (2) to stabilise the shape of the filter hose. In a method of this type, in order to be able to permanently attach a base part (22) to a filter hose (2) with minimal technical requirements yet with high quality standards, according to the invention, the base part is applied to the filter hose (2) and connected to same by means of a friction welding process, in particular a rotational friction welding process.

Classes IPC  ?

• B01D 29/11 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants avec des éléments filtrants en forme de sac, de cage, de tuyau, de tube, de manchon ou analogue
• B01D 29/15 - Éléments filtrants avec des supports agencés pour la filtration à courant dirigé vers l'intérieur
• B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
• B01D 46/02 - Séparateurs de particules comportant des filtres creux faits en un matériau souple, p. ex. appareils de précipitation de poussières
• B29C 65/06 - Assemblage d'éléments préformésAppareils à cet effet par chauffage, avec ou sans pressage en utilisant la friction, p. ex. soudage par rotation

Abrégé

A multi-story lifting table (20) is used to provide at least two sewing material holders for a sewing system. The multi-story lifting table (20) has a lifting-table frame and two table panels (27, 28) for supporting the sewing material holders, the table panels being disposed one above the other in the manner of stories and being fixedly interconnected. Two roller-conveyor pairs (54, 55) can be moved reciprocatingly by means of a roller-conveyor reciprocating drive between a lowered panel position and a panel position which is raised in comparison with the lowered panel position. In the lowered panel position, roller planes of the roller-conveyor pairs (54, 55) lie below respective table-panel planes of the associated table panels (27, 28). In the raised panel position, the roller planes lie above the table-panel planes for the roller guiding of a movement of the sewing material holder from or into the associated support position on the table panel (27, 28). For the reciprocating movement of the table panels (27, 28) relative to the lifting-table frame (41), a panel lifting drive is used. The result is a multi-story lifting table by means of which a sewing material throughput of the sewing system is increased.

Classes IPC  ?

• D05B 33/00 - Dispositifs incorporés aux machines à coudre pour alimenter ou enlever l'ouvrage
• A41H 43/02 - Manipulation de parties ou d'ébauches de vêtements, p. ex. alimentation, empilage, séparation ou retournement

Abrégé

The invention relates to a work piece holder (17) for a sewing machine, which work piece holder has a holding frame (33) relative to which a work piece (34) to be sewn is fixed. The holding frame (33) has a plurality of holding-frame sections (36 to 39) which are hinged together via a section hinge (40). In this way, a work piece holder is formed which can also be loaded when it exceeds, in terms of its dimensions to be loaded, a working range that can be reached by an operator.

Classes IPC  ?

• D05B 39/00 - Supports de l'ouvrage pour machines à coudre
• D05C 9/04 - Porte-ouvrages, p. ex. cadres

Abrégé

A portal sewing system is used to sew sewing material in a sewing working region having a width of more than 1 m. The portal sewing system comprises a portal frame (2) having an upper bridge bar (3) and a lower bridge bar (4) and having two marginal portal supports (6, 7) for forming a portal (5) of the portal frame (2). An upper-part drive (48) is used to move a sewing upper part (8) along the upper bridge bar (3), and a lower-part drive (49) is used to independently move the sewing lower part (10, 11) in question along the lower bridge bar (4). By means of a sewing-part controller (50) of the drives (48, 49), the sewing upper part (8) cooperates selectively with one of the two sewing lower parts (10, 11) for stitch formation in the sewing material. The result is a portal sewing system having increased sewing material throughput.

Classes IPC  ?

• D05B 11/00 - Machines pour coudre les édredons ou matelas
• D05B 59/04 - Dispositifs pour changer les canettes

Abrégé

The invention relates to a sewing unit (1) comprising a CNC controller (2) and a sewing machine (3). Said sewing machine has a sewing-material support plate (6), a sewing upper part (4) and a sewing lower part (5). Said sewing lower part has a controlledly rotationally drivable looper having an under-thread supply in a looper case. The looper is rotatable about an axis which extends in parallel with the sewing-material support. The looper has a diameter of at least 30 mm. A case holding component arranged in the region of the sewing-material support is in engagement with the looper case such that it does not rotate the looper case at the same time when the looper is rotated. The sewing lower part has a controlledly rotationally drivable case ventilating means for displacing the looper case between a neutral position and a ventilated position in which a space for a thread between the looper case and the case holding component is enlarged in comparison with the neutral position. The result is a sewing unit in which mass production is ensured with high overall unit effectiveness even when thick threads are used.

Classes IPC  ?

• D05B 57/14 - Navettes avec crochets rotatifs

Abrégé

A sewing machine has seam-forming tools, comprising a needle for guiding an upper thread and a looper. The needle is designed as a curved needle which is pivotable about a needle pivot axis. This embodiment is such that a distance of the curved needle from the pivot axis is equal to a radius of a curve of the curved needle about the pivot axis. The looper is designed as a looper which is rotatable about a looper rotational axis and has a lower thread reserve. The looper rotational axis runs parallel to a sewing material support region. The sewing machine can be used to produce a durable seam.

Classes IPC  ?

• D05B 85/06 - Aiguilles courbes
• D05B 1/12 - Coutures à point de navette
• D05B 57/22 - Crochets (preneurs de boucles), p. ex. boucleurs, pour machines à coudre pour machines à coudre au point noué avec canette de la taille d'une fusette pour le fil du dessous

Abrégé

A stitch-forming tool assembly for a sewing machine is used to produce a double-chain stitch seam. A sewing needle of the assembly can be driven up and down in a needle stitching direction perpendicular to a material to be sewn and is designed to guide a needle thread. A looper of the assembly is designed to guide a looper thread and for oscillating movement in an oscillating movement plane. The latter is spanned by the needle stitching direction and by a sewing direction along the double chain stitch seam. During an entire double chain stitch a path of movement of the looper lies completely in the oscillating movement plane. This results in a stitch-forming tool assembly in which in particular a looper drive is simplified.

Classes IPC  ?

• D05B 57/02 - Crochets (preneurs de boucles), p. ex. boucleurs, pour machines à coudre pour les machines à coudre à point de chaînette, p. ex. à mouvement oscillant
• D05B 57/32 - Entraînement pour boucleurs dans les machines à coudre à point de chaînette

Abrégé

A sewing machine has seam-forming tools, comprising a needle for guiding an upper thread and a looper. The needle is designed as a curved needle which is pivotable about a needle pivot axis. This embodiment is such that a distance of the curved needle from the pivot axis is equal to a radius of a curve of the curved needle about the pivot axis. The looper is designed as a looper which is rotatable about a looper rotational axis and has a lower thread reserve. The looper rotational axis runs parallel to a sewing material support region. The sewing machine can be used to produce a durable seam.

Classes IPC  ?

• D05B 1/08 - Principaux types d'appareils ou machines à coudre sans mécanisme permettant le mouvement latéral de l'aiguille ou de l'ouvrage ou les deux combinés pour faire des coutures à plusieurs fils
• D05B 1/24 - Principaux types d'appareils ou machines à coudre sans mécanisme permettant le mouvement latéral de l'aiguille ou de l'ouvrage ou les deux combinés pour faire les coutures à points invisibles
• D05B 85/06 - Aiguilles courbes

Abrégé

The invention relates to a sewing machine (1) having seam forming tools (6), comprising a needle (7) for guiding an upper thread (8) and a hook (9). The needle (7) is designed as a curved needle (7) which is pivotable about a needle pivot axis (10). In this embodiment, a distance (A) of the curved needle (7) from the pivot axis (10) is equal to a radius (r) of a curve of the curved needle (7) about the pivot axis (10). The hook (9) is designed as a hook (9) which is rotatable about a hook rotational axis (15) and has a lower thread reserve (16). The hook rotational axis (15) extends parallel to a workpiece support region. A durable seam can be produced by means of the sewing machine.

Classes IPC  ?

• D05B 1/08 - Principaux types d'appareils ou machines à coudre sans mécanisme permettant le mouvement latéral de l'aiguille ou de l'ouvrage ou les deux combinés pour faire des coutures à plusieurs fils
• D05B 1/24 - Principaux types d'appareils ou machines à coudre sans mécanisme permettant le mouvement latéral de l'aiguille ou de l'ouvrage ou les deux combinés pour faire les coutures à points invisibles
• D05B 85/06 - Aiguilles courbes

Abrégé

A stitch-forming tool assembly for a sewing machine is used to produce a double-chain stitch seam. A sewing needle of the assembly can be driven up and down in a needle stitching direction perpendicular to a material to be sewn and is designed to guide a needle thread. A looper of the assembly is designed to guide a looper thread and for oscillating movement in an oscillating movement plane. The latter is spanned by the needle stitching direction and by a sewing direction along the double chain stitch seam. During an entire double chain stitch a path of movement of the looper lies completely in the oscillating movement plane. This results in a stitch-forming tool assembly in which in particular a looper drive is simplified.

Classes IPC  ?

• D05B 57/32 - Entraînement pour boucleurs dans les machines à coudre à point de chaînette
• D05B 57/02 - Crochets (preneurs de boucles), p. ex. boucleurs, pour machines à coudre pour les machines à coudre à point de chaînette, p. ex. à mouvement oscillant

Abrégé

The invention relates to a stitch-forming tool assembly (6) for a sewing machine for producing a double chain stitch seam (7). A sewing needle (8) of the assembly (6) is driven movably up and down in a needle stitching direction (z) perpendicular to a material to be sewn and is designed for guiding a needle thread (10). A looper (12) of the assembly (6) is designed to guide a looper thread (18) and for oscillating movement in an oscillating movement plane (xz). Said plane is spanned by the needle stitching direction (z) and by a sewing direction (x) along the double chain stitch seam (7). During an entire double chain stitch a path of movement of the looper (12) lies completely in the oscillating movement plane (xz). This results in a stitch-forming tool assembly in which in particular a looper drive is simplified.

Classes IPC  ?

• D05B 57/32 - Entraînement pour boucleurs dans les machines à coudre à point de chaînette
• D05B 57/02 - Crochets (preneurs de boucles), p. ex. boucleurs, pour machines à coudre pour les machines à coudre à point de chaînette, p. ex. à mouvement oscillant

Produits et services

Sewing systems, mainly comprising sewing machines and loading and unloading machines for sewing material; sewing machines; seam documentation systems, mainly comprising sewing machines; tufting machines, welding machines, ultrasonic welding machines, hot punching machines, laser cutting machines, ultrasonic cutting machines; control mechanisms for machines, engines or motors, electric motors; robotic sewing systems. Data processing apparatus, namely seam documentation systems; electronic control apparatus for electromotoric closed-loop control drives and for electromotoric open-loop control drives. Contract manufacturing of car seats, car dashboard components, car interior components, leather goods, home textiles, mattresses and fibre-reinforced composite parts for third parties.

Produits et services

Sewing systems comprising sewing machines and loading and unloading machines for sewing material; sewing machines; seam documentation systems comprising sewing machines; tufting machines, welding machines, namely, electric welding machines, ultrasonic welding machines, hot punching machines, laser cutting machines, ultrasonic cutting machines; control mechanisms for machines, engines or motors, electric motors, namely, digital servo drive controllers; robotic sewing systems comprising sewing machines Data processing apparatus for seam documentation systems; electronic control apparatus for electromotoric closed-loop control drives and for electromotoric open-loop control drives, namely, electronic apparatus and instruments for controlling, adjusting and testing of drives and motors Contract manufacturing of car seats, car dashboard components, car interior components, leather goods, home textiles, mattresses and fibre-reinforced composite parts for third parties

Abrégé

The present disclosure relates to a method for controlling the position of a seam contour and a device for carrying out the method, wherein the position control of a seam contour relative to structures of a sewing material is based on comparison data of a structure of a reference sewing material and a structure of a working sewing material.

Classes IPC  ?

• D05B 19/16 - Commande du mouvement de la pièce à travailler, p. ex. modulation du déplacement de la grille d'entraînement
• D05B 19/08 - Dispositions pour introduire dans la mémoire les données concernant le point ou le modèle
• D05B 21/00 - Machines à coudre avec dispositifs pour commander automatiquement le mouvement du porte-ouvrage en liaison avec le mécanisme de formation du point, afin d'obtenir un tracé particulier de couture, p. ex. avec commande à programme pour piquer les cols de chemises, pour poser les poches

Abrégé

Sewing machine with a sewing machine housing (2) comprising a lower housing part (3), an upper housing part (4) with a sewing head (6) and a stand (5), which connects the lower housing part (3) to the upper housing part (4), wherein the upper housing part (4) comprises a stand-side arm housing section (7), a head-side arm housing section (8) and a joint (23), wherein the joint (23) is arranged in such a manner that the head-side arm housing section (8) can be swiveled between a preparation position for the picking up/delivering of a sewing material and a sewing position for sewing the sewing material.

Classes IPC  ?

• D05B 73/02 - Carters supérieurs
• D05B 1/08 - Principaux types d'appareils ou machines à coudre sans mécanisme permettant le mouvement latéral de l'aiguille ou de l'ouvrage ou les deux combinés pour faire des coutures à plusieurs fils
• D05B 21/00 - Machines à coudre avec dispositifs pour commander automatiquement le mouvement du porte-ouvrage en liaison avec le mécanisme de formation du point, afin d'obtenir un tracé particulier de couture, p. ex. avec commande à programme pour piquer les cols de chemises, pour poser les poches
• D05B 73/06 - Carters inférieurs pour machines à coudre du type à bras libre
• D05B 69/08 - Entraînements à fluide, p. ex. pneumatiques

Abrégé

The invention relates to a thread finger assembly (12) for a sewing machine having at least one thread finger (14, 15). Said thread finger assembly can be driven to be repositioned between a loop engagement position and a loop extraction position. The loop engagement position engages the thread finger (14, 15) into a thread loop produced by the sewing machine in a stitch formation region. The loop extraction position is displaced away from the stitch formation region relative to the loop engagement position for pulling out the thread loop using the thread finger (14, 15). A thread finger drive (23, 21, 19) repositions the thread finger (14, 15) between the loop engagement position and the loop extraction position. The result is an assembly of a sewing machine by means of which an appealing seam pattern can be reproducibly produced at a seam start.

Classes IPC  ?

• D05B 61/00 - Teneurs de bouclesÉtendeurs de boucles pour machines à coudreDoigts pour former le point pour machines à coudre
• D05B 1/10 - Coutures à point de chaînette double
• D05B 57/02 - Crochets (preneurs de boucles), p. ex. boucleurs, pour machines à coudre pour les machines à coudre à point de chaînette, p. ex. à mouvement oscillant

Abrégé

The invention relates to a template device for a sewing machine, which is provided with a first interface unit (15) for detachaby arranging on the sewing machine side of the interface unit, wherein the template device comprises at least one stencil plate (20) which can be provided with a contour that can be adapted to a sewing material by mechanical machining in order to interact with the at least one stencil plate (20) in order to exert or support a handling and/or a sewing function on the sewing material in the sewing machine (1). The aim is to provide a possibility by means of which the template devices of the above-mentioned type in sewing machines can be changed faster. In order to achieve the aim of the invention, the invention proposes that the first interface unit (15) is arranged on carrier means (17) of the template device, wherein the carrier means (17) is physically separated from the at least one stencil plate (20), and the at least one stencil plate (20) can be fastened to the carrier means (17) of the template device in a detachable and exchangeable manner by means of second interface means (19).

Classes IPC  ?

• D05B 33/00 - Dispositifs incorporés aux machines à coudre pour alimenter ou enlever l'ouvrage
• D05B 35/04 - Éléments d'alimentation ou de manutention de l'ouvrage pour machines à coudre non prévus ailleurs pour faciliter le piquageÉléments de retournement de l'ourletGuides-ourleurs avec outils mobiles
• D05B 39/00 - Supports de l'ouvrage pour machines à coudre

Abrégé

The present invention relates to a method for controlling the position of a seam profile and to a device for carrying out the method, wherein the position control of a seam profile relative to structures of a sewing material is based on comparison data of a structure of a reference sewing material and a structure of a working sewing material.

Classes IPC  ?

• D05B 19/16 - Commande du mouvement de la pièce à travailler, p. ex. modulation du déplacement de la grille d'entraînement
• D05B 21/00 - Machines à coudre avec dispositifs pour commander automatiquement le mouvement du porte-ouvrage en liaison avec le mécanisme de formation du point, afin d'obtenir un tracé particulier de couture, p. ex. avec commande à programme pour piquer les cols de chemises, pour poser les poches

Abrégé

The invention relates to a sewing machine comprising a sewing machine housing (2) having a housing lower part (3), a housing upper part (4) with a sewing head (6), and a stand (5) which connects the housing lower part (3) to the housing upper part (4), wherein the housing upper part (4) has a stand-side arm housing portion (7), a head-side arm housing portion (8), and a joint (23), wherein the joint (23) is positioned such that the head-side arm housing portion (8) can be pivoted between a preparation position for receiving/dispensing sewing material and a sewing position for sewing the sewing material.

Classes IPC  ?

• D05B 23/00 - Appareils ou machines à coudre non prévus ailleurs
• D05B 37/02 - Dispositifs pour couper des bandes ou nervurer
• D05B 69/30 - Entraînements ou dispositifs de commande pour machines à coudre Parties constitutives

Abrégé

The invention relates to a sewing machine comprising a sewing machine housing (2) having a housing lower part (3), a housing upper part (4) with a sewing head (6), and a stand (5) which connects the housing lower part (3) to the housing upper part (4), wherein the housing upper part (4) has a stand-side arm housing portion (7), a head-side arm housing portion (8), and a joint (23), wherein the joint (23) is positioned such that the head-side arm housing portion (8) can be pivoted between a preparation position for receiving/dispensing sewing material and a sewing position for sewing the sewing material.

Classes IPC  ?

• D05B 23/00 - Appareils ou machines à coudre non prévus ailleurs
• D05B 37/02 - Dispositifs pour couper des bandes ou nervurer
• D05B 69/30 - Entraînements ou dispositifs de commande pour machines à coudre Parties constitutives

Abrégé

A material web fixing device is used as part of a filter bag manufacturing installation. A material web transport device is used to transport at least two material webs, which fixed together at a distance from one another by at least one fixing seam, along a transport direction. A plurality of sewing units each have stitch forming tools configured as a sewing needle and a looper which interact with a thread. The material webs can be passed through between said stitch forming tools in the transport direction. An excess thread production unit is used to lengthen a thread path between the material webs. The excess thread production unit is arranged between the material webs in the thread run during operation. As a result, a material web fixing device is obtained, which allows filter bags to be produced with larger bag openings, particularly with larger opening extensions between the material webs.

Classes IPC  ?

• D05B 13/00 - Machines pour coudre les sacs
• D05B 33/02 - Dispositifs incorporés aux machines à coudre pour alimenter ou enlever l'ouvrage et reliés, pour un fonctionnement synchrone, avec les dispositifs d'entraînement de l'ouvrage de la machine à coudre

Abrégé

The invention relates to a pocket sew-on template for an automatic sewing system (1) for sewing a cut piece on a clothing-article base or other sewable base, for use in producing a clothing-article cargo patch pocket by sewing the cut piece to the clothing-article base, comprising a plate (33) for placing against the cut piece and for holding the cut piece down during the sewing, wherein the plate (33) also has a peripheral edge region and has a groove (32) in the plate as a predefined needle path on the cut piece, the plate (33) having at least one cut-out, which is provided and is arranged in a location of the plate such that a portion of the cut piece can be excluded from the holding down during the holding down, the degree of automation of the production and the production accuracy can be increased according to the invention in that the plate is provided with at least one receptacle (36, 37, 41, 42) for receiving a raised corner region of the cut piece and with flat portions of the plate (33) adjoining the receptacle (36, 37, 41, 42) on both sides for holding down a folded-over part of a cargo fold region. The invention relates to an automatic sewing system and to a method for producing a cargo patch pocket on a base of a clothing article or of a transport bag.

Classes IPC  ?

• D05B 21/00 - Machines à coudre avec dispositifs pour commander automatiquement le mouvement du porte-ouvrage en liaison avec le mécanisme de formation du point, afin d'obtenir un tracé particulier de couture, p. ex. avec commande à programme pour piquer les cols de chemises, pour poser les poches
• D05B 35/00 - Éléments d'alimentation ou de manutention de l'ouvrage pour machines à coudre non prévus ailleurs
• D05B 39/00 - Supports de l'ouvrage pour machines à coudre

Abrégé

A sewing system serves for sewing seams which the multi-dimensionally in space. A needle-bar upper part of a sewing head is mounted so as to be pivotable in a driven manner about a needle-bar longitudinal axis. A gripper lower part is mounted so as to be pivotable in a driven manner, and in a manner synchronous with the needle-bar upper part, about the needle-bar longitudinal axis, in the sewing-head lower part. Motor components for driving the movement of a needle bar, for pivoting the needle-bar upper part, for driving a gripper in a manner synchronous with the needle bar and for pivoting the gripper lower part are disposed outside the needle-bar upper part and outside the gripper lower part. Parts to be sewn that are topographically non-uniform are also rendered accessible.

Classes IPC  ?

• D05B 57/30 - Entraînement pour boucleurs
• D05B 55/14 - Commandes des barres à aiguilles
• D05B 69/00 - Entraînements ou dispositifs de commande pour machines à coudre
• D05B 21/00 - Machines à coudre avec dispositifs pour commander automatiquement le mouvement du porte-ouvrage en liaison avec le mécanisme de formation du point, afin d'obtenir un tracé particulier de couture, p. ex. avec commande à programme pour piquer les cols de chemises, pour poser les poches
• D05B 29/12 - Fixation du pied presseur
• D05B 69/30 - Entraînements ou dispositifs de commande pour machines à coudre Parties constitutives

Abrégé

The invention relates to a sewing system and to a sewing method, having at least one double lockstitch sewing machine for producing at least one seam on sewing material, in particular for producing at least one dart on the sewing material. The sewing system is provided with a driven sewing material transport system for a defined or definable advancing direction of the sewing material relative to stitch-forming tools which are provided to produce the at least one seam on the sewing material in question. The sewing material transport system has a pressure bar (18) with which the sewing material can be pressed against a worktop and the sewing material can be moved to produce an advancing movement past the stitch-forming tools. According to the invention, to allow a seam to start without stitching faults but with a short thread starting end when using such a sewing system to produce darts, without manual post-processing being necessary, a clamping device (25) arranged on the pressure bar (18) can be moved together with the pressure bar (18) during the advancing movement thereof, wherein the clamping device (25) is provided to clamp a thread starting end of the top thread (30), and the sewing system has a cutting element (34) which is arranged, at least temporarily immediately after the start of seam production, in a region between the clamping device and the presser foot in order to cut the top thread between the clamping device and the presser foot.

Classes IPC  ?

• D05B 65/02 - Dispositifs pour sectionner le fil de l'aiguille ou le fil du dessous dans les machines à coudre commandés par les mécanismes de piquage

Abrégé

The invention relates to a sewing machine comprising stitch-forming tools, such as, for example, at least two needles which guide in each case a thread, for the production of seams (29, 30) by means of the stitch-forming tools which guide in each case a thread, the sewing machine (1) being provided with a sewing material transport (9), by which a feed of the sewing material relative to the stitch-forming tools can be carried out. The sewing machine (1) according to the invention further comprises a puller device (10) which is arranged behind the sewing material transport (9) in relation to the provided feed direction, said puller device (10) being provided with two or more rotationally driven rollers (11, 12), wherein the two rollers (11, 12) are provided for applying predetermined feed directions of the sewing material, in particular for applying curved feed directions instead of a linear feed direction of the sewing material. The aim of the invention is to achieve a reduction in the expenditure for producing geometrically different waistbands. In order to achieve said aim, it is proposed that the puller device (10) has a separate motor drive (15, 16) for each of the at least two rollers (11, 12), wherein the two motor drives (15, 16) can be actuated separately and independently of one another in order to provide the at least two rollers (11, 12) simultaneously with in each case a drive movement that is independent from the one of the other roller. The invention also relates to a method for sewing a waist to a piece of garment.

Classes IPC  ?

• D05B 27/10 - Moyens d'entraînement de l'ouvrage pour machines à coudre avec organes d'entraînement rotatifs et circulaires
• D05B 35/10 - Guides lisières

Abrégé

The invention relates to a sewing machine for stitching back stitches, provided with a needle bar for receiving a needle guiding an upper thread, and comprising a rotary shuttle (5) in which a bobbin case (4) comprising a bobbin guiding a lower thread can be accommodated, said sewing machine also comprises a bobbin case changing device (8) enabling a bobbin case (4) to be removed from a housing (9) and to be introduced into the rotary shuttle (5). The aim of the invention is to improve the functional reliability of said type of sewing machine with a bobbin case changing device, such that the bobbin case changing device (8) is secured to an upper part of the machine frame (2) of the sewing machine.

Classes IPC  ?

• D05B 59/04 - Dispositifs pour changer les canettes
• D05C 11/16 - Dispositifs pour répéter le fil de motifs ou pour changer de fils

Abrégé

A material web fixing device is used as part of a filter pocket manufacturing system. A material web conveying device is used in the process to convey at least two material webs (3, 4), which are to be fixed together at a distance to each other by means of at least one fixing seam (19), along a conveying direction (6). A plurality of sewing units (7) have a respective sewing needle (8) and a thread gripper (9) as stitching tools which interact with a thread (10). The material webs (3, 4) can be conveyed between said stitching tools in the conveying direction (6). A multithread generating unit (14) is used to lengthen a thread path between the material webs (3, 4). The multithread generating unit (14) is arranged between the material webs (3, 4) in the thread course during operation. As a result, a material web fixing device is produced by means of which filter pockets can be produced with larger pocket openings, particularly with larger opening extensions between the material webs.

Classes IPC  ?

• D05B 13/00 - Machines pour coudre les sacs

Abrégé

The invention relates to a sewing installation for producing quilting seams in sewing material, in particular in textile supports for reclining furniture. The sewing installation has a base frame and a plurality of sewing heads (15) with in each case a sewing upper part (16) and an associated sewing lower part (17) for the formation of a corresponding plurality of quilting seams in the sewing material. The sewing heads (15) are each mounted on the base frame and designed for the formation of parallel quilting seams which extend along a common direction of sewing (N). The sewing heads (15) are designed to be displaceable independently of one another along a displacement direction (V) and perpendicular to the direction of sewing (N). This results in a sewing installation which allows a simple specification of product-specific distances of the quilting seams.

Classes IPC  ?

• D05B 11/00 - Machines pour coudre les édredons ou matelas
• D05B 69/00 - Entraînements ou dispositifs de commande pour machines à coudre
• D05B 33/00 - Dispositifs incorporés aux machines à coudre pour alimenter ou enlever l'ouvrage

Abrégé

A sewing unit (1) for sewing seams located multidimensionally in space has a sewing head. The latter has a needle bar upper part (12) in which a needle bar (11) is mounted so as to be driven up and down along its longitudinal axis (13). At least one sewing needle (9, 10) is held, as a stitch-forming tool, on the needle bar (11). The needle bar upper part (12) is mounted in a pivotable manner in a sewing head upper part (14) so as to be driven about the needle bar longitudinal axis (13). At least one gripper is mounted, as a stitch-forming tool driven synchronously with the sewing needle (9, 10), on a gripper lower part (17) of the sewing head. The gripper lower part (17) is mounted in a pivotable manner in a sewing head lower part (18) so as to be driven about the needle bar longitudinal axis (13) synchronously with the needle bar upper part (12). Motor components (19, 69) for driving the up and down movement of the needle bar (11), for pivoting the needle bar upper part (12), for driving the gripper synchronously with the needle bar (11) and for pivoting the gripper lower part (17) are arranged outside the needle bar upper part (12) and outside the gripper lower part (17). This results in a sewing unit with which even parts that are to be sewn in a topographically irregular manner are made accessible for sewing.

Classes IPC  ?

• D05B 55/14 - Commandes des barres à aiguilles
• D05B 57/30 - Entraînement pour boucleurs
• D05B 69/00 - Entraînements ou dispositifs de commande pour machines à coudre

Abrégé

A sewing unit (1) for sewing seams located multidimensionally in space has a sewing head. The latter has a needle bar upper part (12) in which a needle bar (11) is mounted so as to be driven up and down along its longitudinal axis (13). At least one sewing needle (9, 10) is held, as a stitch-forming tool, on the needle bar (11). The needle bar upper part (12) is mounted in a pivotable manner in a sewing head upper part (14) so as to be driven about the needle bar longitudinal axis (13). At least one gripper is mounted, as a stitch-forming tool driven synchronously with the sewing needle (9, 10), on a gripper lower part (17) of the sewing head. The gripper lower part (17) is mounted in a pivotable manner in a sewing head lower part (18) so as to be driven about the needle bar longitudinal axis (13) synchronously with the needle bar upper part (12). Motor components (19, 69) for driving the up and down movement of the needle bar (11), for pivoting the needle bar upper part (12), for driving the gripper synchronously with the needle bar (11) and for pivoting the gripper lower part (17) are arranged outside the needle bar upper part (12) and outside the gripper lower part (17). This results in a sewing unit with which even parts that are to be sewn in a topographically irregular manner are made accessible for sewing.

Classes IPC  ?

• D05B 55/14 - Commandes des barres à aiguilles
• D05B 57/30 - Entraînement pour boucleurs
• D05B 69/00 - Entraînements ou dispositifs de commande pour machines à coudre

Abrégé

The invention is intended to enable a multi-needle chain-stitch sewing machine to produce in a single operation chain-stitch seams which run parallel to one another and are at a small distance from one another and in which the points of insertion of the needles in the seams are not offset from one another in relation to the longitudinal direction thereof. For this purpose, a multi-needle chain-stitch sewing machine is provided, comprising multiple needles (2) each guiding an upper thread (5), wherein the multiple needles are arranged respectively at a distance from one another along a straight-running line and can be moved synchronously in relation to one another, and the line is aligned at least substantially orthogonally in relation to the intended direction of advancement of a transporting mechanism for the material to be sewn, also comprising a thread guide (4) for the multiple upper threads, in order to guide each upper thread (5) from its thread supply (6) to the needle assigned to it, comprising multiple driven loopers (3), each guiding an underthread (25), wherein the loopers (3) are arranged at a distance from one another and can be moved synchronously in relation to one another, the movements of the loopers (3) and the needles (2) having the effect in each case that an upper thread (5) and an underthread (25) can be interwoven, in order in this way to produce simultaneously in the material to be sewn multiple seams running parallel to one another, with points of insertion of the needles arranged in the material to be sewn without being offset from one another in the direction of advancement, and a drive device, which has at least one motor and by which the movements of the needles and the loopers can be produced in a predetermined and coordinated way. According to the invention, such a chain-stitch sewing machine is to be provided with a thread tensioning means (10), for at least one of the upper threads (5), arranged in the region of the thread guide and provided in addition to a thread take-up (11), with which at least one of the upper threads can be provided with an additional thread tension in the region between the thread tensioning means (10) and the needle (2) assigned to the at least one upper thread (5).

Classes IPC  ?

• D05B 47/00 - Dispositifs de réglage de tension du fil d'aiguille pour machines à coudreAdaptations d'appareils de mesure de la tension des machines à coudre
• D05B 11/00 - Machines pour coudre les édredons ou matelas
• D05B 1/06 - Coutures à point de chaînette simple
• D05B 1/10 - Coutures à point de chaînette double

Produits et services

Sewing systems, mainly comprising sewing machines and loading and unloading machines for sewing material; sewing machines; seam documentation systems, mainly comprising sewing machines; tufting machines, ultrasonic welding machines, hot punching machines, laser cutting machines, ultrasonic cutting machines. Data processing apparatus, namely seam documentation systems. Custom manufacture of car seats, car dashboard components, car interior components, leather goods, home textiles, mattresses and fibre-reinforced composite parts for third parties.

Produits et services

Sewing systems, mainly comprising sewing machines and loading and unloading machines for sewing material; sewing machines; seam documentation systems, mainly comprising sewing machines; tufting machines, ultrasonic welding machines, hot punching machines, laser cutting machines, ultrasonic cutting machines. Data processing apparatus, namely seam documentation systems. Contract manufacturing of car seats, car dashboard components, car interior components, leather goods, home textiles, mattresses and fibre-reinforced composite parts for third parties.

Abrégé

An apparatus for the production of rectangular mattress plates from a length of material includes a base frame, a feed drive for feeding the length of material in a transport direction (A), two lateral sewing stations, each provided with a longitudinal sewing head for producing a lateral seam and with a longitudinal cutter, a transverse sewing station provided with a transverse sewing head and a transverse cutter that can be moved along a crossbeam, and a control device for controlling the feed drive, the transverse drive, the lateral sewing stations, and the transverse sewing station. The lateral sewing stations are each pivotable by a rotary drive about an axis extending perpendicularly with regard to the plane of a transport path of the material and moveable along crossbeams by a translatory drive. The translatory drive and the rotary drive are controllable by the control device in coordination with the feed drive.

Classes IPC  ?

• D05B 11/00 - Machines pour coudre les édredons ou matelas