EP1270788A1 - Device for removably attaching an embroidery frame to an embroidery frame carrier - Google Patents

Device for removably attaching an embroidery frame to an embroidery frame carrier Download PDF

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Publication number
EP1270788A1
EP1270788A1 EP02405348A EP02405348A EP1270788A1 EP 1270788 A1 EP1270788 A1 EP 1270788A1 EP 02405348 A EP02405348 A EP 02405348A EP 02405348 A EP02405348 A EP 02405348A EP 1270788 A1 EP1270788 A1 EP 1270788A1
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EP
European Patent Office
Prior art keywords
embroidery frame
locking
embroidery
latching
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02405348A
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German (de)
French (fr)
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EP1270788B1 (en
Inventor
André Stucki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fritz Gegauf AG
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Fritz Gegauf AG
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Publication date
Application filed by Fritz Gegauf AG filed Critical Fritz Gegauf AG
Publication of EP1270788A1 publication Critical patent/EP1270788A1/en
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Publication of EP1270788B1 publication Critical patent/EP1270788B1/en
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B21/00—Sewing machines with devices for automatically controlling movement of work-carrier relative to stitch-forming mechanism in order to obtain particular configuration of seam, e.g. programme-controlled for sewing collars, for attaching pockets
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C5/00—Embroidering machines with arrangements for automatic control of a series of individual steps
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C9/00—Appliances for holding or feeding the base fabric in embroidering machines
    • D05C9/02—Appliances for holding or feeding the base fabric in embroidering machines in machines with vertical needles
    • D05C9/04—Work holders, e.g. frames

Definitions

  • the invention relates to a device for detachable Attach an embroidery frame to an embroidery frame holder according to the preamble of claim 1.
  • connection between an embroidery hoop and its carrier which has the drive means for the embroidery hoop, must be detachable in order on the one hand to be able to attach embroidery hoops of different sizes and shapes to the embroidery hoop holder and on the other hand the material to be embroidered, e.g. a fabric, outside to be able to insert the sewing machine into the embroidery frame and fasten it there.
  • the material to be embroidered e.g. a fabric
  • the drive means for the movements of the embroidery frame fastenings in the x and y directions are arranged in the embroidery frame carrier, which is arranged next to the forearm in household sewing machines and is connected to it by coupling and locking means.
  • a steel mounting bracket with locking lugs protruding upwards is arranged on the embroidery frame carrier for connecting or coupling the embroidery frame.
  • a downward open guide channel is attached to the embroidery frame, into which the vertical leg of the bracket with the locking lugs is inserted from below and can be locked by two locking slides that can be moved in opposite directions.
  • the locking slides are longitudinally guided in the guide channel and connected with two handle plates.
  • the grip plates protrude above the guide channel in such a way that they can be gripped with two fingers of one hand and pressed against each other.
  • a spring is inserted between the two locking slides, which press them apart when the grip plates are relieved and thus pushes the outwardly directed ends of the locking slides under the locking lugs in the guide channel.
  • a device for automatically identifying the size and design of an embroidery frame on a sewing or embroidery machine with a program-controlled embroidery device is also known.
  • This device enables the control of the sewing machine to recognize the embroidery hoop just connected to the embroidery hoop carrier and thus to make full use of the area within the embroidery hoop available for embroidery.
  • Corresponding identification means for example coding spikes, are arranged on the embroidery frame in the area below the guide channel as identification means.
  • the identification means are firmly connected to the coupling and locking means and therefore only allow the respective embroidery hoop to be recognized, which is firmly connected to the locking means. If it is possible on the embroidery hoop to connect it to the embroidery hoop carrier at different points, the attachment point on the corresponding embroidery hoop can no longer be identified in the known manner.
  • the object of the present invention is to provide a device for releasably attaching an embroidery hoop, which not only makes it possible to connect the embroidery hoop to the embroidery hoop holder, but also to snap the embroidery hoop into different places with respect to the embroidery hoop holder, in order to use much larger embroidery fields in succession by using appropriately larger embroidery hoops to be able to embroider.
  • Another task is to provide the possibility, after attaching the embroidery frame to the embroidery frame carrier, that the attachment location on the respective embroidery frame type can be determined by the control or corresponding sensors.
  • the device according to the invention succeeds both a play-free locking of the embroidery hoop on To get embroidery frame holder and at the same time with one and the same locking and coupling means the embroidery hoop not only to connect to the embroidery frame support, but this without releasing it from the embroidery frame carrier move, lock again and the locking point identified by the controller.
  • the two handle buttons can therefore be pressed together Embroidery frame either from the embroidery frame carrier as before can be lifted off or it can be along one on the embroidery hoop fastened guideway and moved to suitable Positions determined and the attachment point on Embroidery frames can be recognized by the machine control.
  • Moving the hoop with respect to the Embroidery frame holder is made by briefly pressing together the handle buttons and then moving them sideways of the embroidery frame. Snap into place on the neighboring one The working position then takes place automatically there is also a play-free jamming of the Embroidery frame with the embroidery frame holder without doing so further operator intervention is necessary.
  • the sewing machine according to FIGS. 1 and 2 has the usual sewing organs, operating elements and other equipment parts, some of which are not described in detail. It consists essentially of the machine housing 1, the free arm 3 and the base plate 5. On the machine housing 1 are, for example, a screen 7, a trackball 9 with an assigned confirmation key (OK) 11 and delete key (CL) 13 and an unspecified row of keys for the Direct selection of special functions arranged.
  • the needle cooperating through the tap hole 15 with a gripper device (not shown) is designated by 17, while the presser foot acting on the material not shown is designated by 19.
  • the base unit 21 of an embroidery module 23 which can be connected to the sewing machine 1 by mechanical and electrical connecting means (not shown) contains the program-controlled drive means for the embroidery frame carrier 25 for driving the carrier 25 in the x direction.
  • Drive means for driving the embroidery frame 27 in the y direction are further arranged in the embroidery frame carrier 25.
  • the embroidery hoop 27 is, as is generally customary, in two parts and consists of a closed inner hoop 27a and a divided outer hoop 27b.
  • a clamping device 29 for clamping the sewing material is arranged on the outer frame 27b.
  • the embroidery hoop 27 can be connected to the embroidery hoop carrier 25 by means of a fastening device, generally designated 31.
  • the embroidery frame holding plate 35 is visible in the foreground, of which only the two plates 37 with the counter hooks 39 formed thereon protrude beyond the housing of the embroidery frame support 25 (the latter omitted in FIG. 3).
  • a short section of the embroidery frame 27 with the guide and coding rail 41 attached to it is visible in the background.
  • On the guide rail 41 for example, three coding sections 43, 45, 44, the latter partially hidden by the embroidery frame holding plate 35.
  • the coding sections 43, 44, 45 can consist of jagged edges. It is also possible to design this as a bar code (no picture).
  • a holding and latching element which forms the fastening device, is mounted in a longitudinally displaceable manner in a guide groove 47.
  • the latter can be ascertained or latched on latching and holding slots 51 in the area of the coding sections 43 to 45 on the guide rail 41.
  • the holding element 49 which is shown in FIGS. 3 and 4 without a cover 57, comprises a support body 53 which partially surrounds the guide rail 41 or engages under it at both ends.
  • the two ends of the support body 53 are advantageously designed as end plates 55, which are closed off at the end by the cover 57.
  • a longitudinal guide 59 is formed in the middle for two locking slides 61 slidably mounted therein.
  • Handle plates 63 projecting upwards are formed on the locking slides 61 and protrude above the cover 57 at the top.
  • the locking slides 61 comprise outward-pointing wedges which come into contact with inclined surfaces 67 lying essentially parallel to the first wedge surface on the holding element 49.
  • the second wedge surfaces of the wedges 65 rest on the plates 37 and thereby support the embroidery frame 27 on the embroidery frame support 25 without play.
  • the locking slides 61 each comprise an outwardly directed locking hook 68 with an upper locking surface, which locking hooks 68 come into contact with the plates 37 on the underside of the counter-hooks 39.
  • Coil springs 69 held clamped.
  • the outer ends of the springs 69 are from at the Locking slides 61 molded pin 71 held.
  • the opposite spring ends are on one Spring housing 73, which receives a detent spring 75, which are in a perpendicular plane to the axes of the Coil springs 69 and perpendicular to the embroidery frame holding plate 35 lies.
  • the detent spring 75 is at the top Spring housing 73 is supported and is below by a nose 77 held on a one-armed locking lever 79.
  • the Locking lever 79 has one end on the holding element 49 articulated. The free end is as an after configured below hook 81.
  • the two Coil springs 69 can also be cup-shaped Pads 83 on the top of the longitudinal guide 59 be supported.
  • the longitudinal guide 59 also takes over lateral guidance of the locking lever 79 and also carries the Swivel pin 85.
  • On one of the two Locking slide 61 is also a lifting element in Shape of a ramp surface 70 attached, which at Press the locking slide 61 together with the Handle plates 63 under the free end of the locking lever 79 engages and lifts the locking hook 81 out of the slot 51.
  • FIG. 4 shows part of the cover 57 with one of the fastening screws 87 on the left-hand side of the figure. Also visible on the cover 57 is a recess 89 which is open at the bottom and into which a guide cam 91 engages on the plate 37 of the embroidery frame holding plate 35 and defines its height with respect to the holding element 49.
  • An embroidery frame 27 with one, two, three or more embroidery surface sections and a corresponding number of holding slots 51 and coding sections 43 to 45 is pushed vertically from above onto the two plates 37 on the embroidery frame holding plate 35 after the two handle plates 63 have been pressed together, until the two guide cams 91 are fully inserted into the recesses 89.
  • the pressure exerted on the grip plates 63 by the fingers of one hand can be reduced to such an extent that on the one hand the hook 81 rests on the lever 79 on the surface of the guide rail 41, but on the other hand the wedges 65 do not yet fit snugly against the inclined surfaces 67 and consequently, moving the embroidery frame 17 in the guide groove 47 is possible.
  • the handle plates 63 are loosened further, the locking hooks 68 slide under the counter hooks 39 on the plates 37. As a result, the embroidery frame 27 is held on the carrier 25 in the vertical direction.
  • the lever 79 pivots downward due to the force of the detent spring 75 and locks the embroidery frame 27 on the embroidery frame support 25, for example in the area of the coding section 44 (Fig. 3/4 ).
  • the two coil springs 69 press the wedges 65 against the inclined surfaces 67.
  • the support body 59 is pressed against the two plates 37 by the play of the holding element 49 in the guide groove 47. There is now a completely play-free connection between the embroidery frame 27 and the carrier 25 in the x and y directions.
  • the coding means here serrations, arrive in front of a sensor element (not shown) on the carrier 25, which on the one hand recognizes the size and design of the embroidery frame 27 on the basis of the serrations, and also the position which the embroidery frame 27 is connected to the carrier 25.
  • the data recorded by the sensor element are communicated to the machine control.
  • the embroidery of the embroidery field assigned to the coding section 44 can then take place within the embroidery frame 27.
  • the grip plates 63 are pressed together with two fingers of one hand until the hook 81, the slot 51 and the wedges 65 have left the full system and a lateral displacement of the embroidery frame 27 on the embroidery frame carrier 25 is possible.
  • the sensor system uses the design of the coding section 43 to determine the new position of the embroidery frame 27 and to make it available to the control of the sewing machine 1. This can now continue the saved sewing or embroidery pattern in the new embroidery field at the correct position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

A program-controlled automatic sewing machine has an embroidery frame carrier holding a frame with several sectors. The frame has two locking slides operating in the X and Y planes. The locking slides allow for movement of the frame from one position to another. The frame is lifted from a slit especially by a swivel lever with a downward-directed lug. The embroidery frame holder may be fitted with sensors which detect what type of frame is fitted and the embroidery sewing program to be followed.

Description

Gegenstand der Erfindung ist eine Vorrichtung zum lösbaren Befestigen eines Stickrahmens an einem Stickrahmenträger gemäss Oberbegriff des Patentanspruchs 1.The invention relates to a device for detachable Attach an embroidery frame to an embroidery frame holder according to the preamble of claim 1.

Die Verbindung zwischen einem Stickrahmen und dessen Träger, der die Antriebsmittel für den Stickrahmen aufweist, muss lösbar sein, um einerseits die Möglichkeit zu haben, Stickrahmen unterschiedlicher Grösse und Form am Stickrahmenträger befestigen zu können und andererseits das zu bestickende Gut, z.B. ein Gewebe, ausserhalb der Nähmaschine in den Stickrahmen einlegen zu können und dort zu befestigen.
Aus dem DE-GM 29 614 512 ist eine solche Vorrichtung zum lösbaren Befestigen eines Stickrahmens am Stickrahmenträger einer programmgesteuerten Näh- oder Stickmaschine bekannt. Im Stickrahmenträger, der bei Haushaltnähmaschinen neben dem Unterarm angeordnet ist und durch Kupplungs- und Arretiermittel mit diesem verbunden wird, sind die Antriebsmittel für die Bewegungen der Stickrahmenbefestigungen in x- und in y-Richtung angeordnet. Am Stickrahmenträger ist für die Verbindung bzw. Ankoppelung des Stickrahmens ein Haltewinkel aus Stahl mit nach oben ragenden Arretiernasen angeordnet. Am Stickrahmen ist ein nach unten offener Führungskanal befestigt, in welchen der vertikale Schenkel des Haltewinkels mit den Arretiernasen von unten einschiebund durch zwei gegensinnig bewegbare Sperrschieber arretierbar ist. Die Sperrschieber sind im Führungskanal längsgeführt und mit zwei Griffplatten verbunden. Die Griffplatten überragen den Führungskanal derart, dass sie mit zwei Fingern einer Hand erfasst und gegeneinander gepresst werden können. Zwischen den beiden Sperrschiebern ist eine Feder eingesetzt, welche diese bei entlasteten Griffplatten auseinanderdrücken und so die nach aussen gerichteten Enden der Sperrschieber unter die Arretiernasen im Führungskanal schiebt. Diese bekannte Vorrichtung ermöglicht es, auf einfache Weise und mit Hilfe nur einer Hand den Stickrahmen am Stickrahmenträger zu befestigen oder von diesem abzunehmen. Sie hat allerdings den Nachteil, dass der Stickrahmen durch die vertikal wirkende Arretierung in x- und y-Richtung nicht genügend spielfrei gehalten werden kann und dadurch die Reproduzierbarkeit der gestickten Muster nicht in jedem Falle gewährleistet ist. The connection between an embroidery hoop and its carrier, which has the drive means for the embroidery hoop, must be detachable in order on the one hand to be able to attach embroidery hoops of different sizes and shapes to the embroidery hoop holder and on the other hand the material to be embroidered, e.g. a fabric, outside to be able to insert the sewing machine into the embroidery frame and fasten it there.
From DE-GM 29 614 512 such a device for releasably attaching an embroidery frame to the embroidery frame holder of a program-controlled sewing or embroidery machine is known. The drive means for the movements of the embroidery frame fastenings in the x and y directions are arranged in the embroidery frame carrier, which is arranged next to the forearm in household sewing machines and is connected to it by coupling and locking means. A steel mounting bracket with locking lugs protruding upwards is arranged on the embroidery frame carrier for connecting or coupling the embroidery frame. A downward open guide channel is attached to the embroidery frame, into which the vertical leg of the bracket with the locking lugs is inserted from below and can be locked by two locking slides that can be moved in opposite directions. The locking slides are longitudinally guided in the guide channel and connected with two handle plates. The grip plates protrude above the guide channel in such a way that they can be gripped with two fingers of one hand and pressed against each other. A spring is inserted between the two locking slides, which press them apart when the grip plates are relieved and thus pushes the outwardly directed ends of the locking slides under the locking lugs in the guide channel. This known device enables the embroidery hoop to be attached to or removed from the embroidery hoop carrier in a simple manner and with the aid of only one hand. However, it has the disadvantage that the embroidery hoop cannot be kept sufficiently free of play due to the vertical locking in the x and y directions, and the reproducibility of the embroidered pattern is therefore not guaranteed in every case.

Aus dem DE-GM 29612102 ist weiter eine Vorrichtung zum automatischen Identifizieren der Grösse und Ausbildung eines Stickrahmens an einer Näh- oder Stickmaschine mit programmgesteuerter Stickvorrichtung bekannt. Diese Vorrichtung ermöglicht es der Steuerung der Nähmaschine, den gerade mit dem Stickrahmenträger verbundenen Stickrahmen zu erkennen und damit die für das Sticken zur Verfügung stehende Fläche innerhalb des Stickrahmens voll auszunutzen. Als Identifikationsmittel sind am Stickrahmen im Bereich unterhalb des Führungskanals entsprechende Identifikationsmittel, z.B. Codierzacken, angeordnet.
Die Identifikationsmittel sind bei der bekannten Vorrichtung fest mit dem Kupplungs- und Arretiermittel verbunden und lassen deshalb nur ein Erkennen des jeweiligen Stickrahmens zu, der fest mit dem Arretiermittel verbunden ist. Wenn die Möglichkeit am Stickrahmen gegeben ist, diesen an unterschiedlichen Stellen mit dem Stickrahmenträger zu verbinden, so kann in der bekannten Weise keine Identifikation der Befestigungsstelle am entsprechenden Stickrahmen mehr erfolgen.From DE-GM 29612102 a device for automatically identifying the size and design of an embroidery frame on a sewing or embroidery machine with a program-controlled embroidery device is also known. This device enables the control of the sewing machine to recognize the embroidery hoop just connected to the embroidery hoop carrier and thus to make full use of the area within the embroidery hoop available for embroidery. Corresponding identification means, for example coding spikes, are arranged on the embroidery frame in the area below the guide channel as identification means.
In the known device, the identification means are firmly connected to the coupling and locking means and therefore only allow the respective embroidery hoop to be recognized, which is firmly connected to the locking means. If it is possible on the embroidery hoop to connect it to the embroidery hoop carrier at different points, the attachment point on the corresponding embroidery hoop can no longer be identified in the known manner.

Aufgabe der vorliegenden Erfindung ist die Schaffung einer Vorrichtung zum lösbaren Befestigen eines Stickrahmens, welche es nicht nur ermöglicht, den Stickrahmen mit dem Stickrahmenträger zu verbinden, sondern den Stickrahmen bezüglich dem Stickrahmenträger an unterschiedlichen Stellen einzurasten, um durch Verwendung entsprechend grösserer Stickrahmen wesentlich grössere Stickfelder nacheinander besticken zu können.
Eine weitere Aufgabe besteht darin, nach dem Befestigen des Stickrahmens am Stickrahmenträger die Möglichkeit zu schaffen, dass der Befestigungsort am jeweiligen Stickrahmentyp durch die Steuerung bzw. entsprechende Sensoren feststellbar ist.The object of the present invention is to provide a device for releasably attaching an embroidery hoop, which not only makes it possible to connect the embroidery hoop to the embroidery hoop holder, but also to snap the embroidery hoop into different places with respect to the embroidery hoop holder, in order to use much larger embroidery fields in succession by using appropriately larger embroidery hoops to be able to embroider.
Another task is to provide the possibility, after attaching the embroidery frame to the embroidery frame carrier, that the attachment location on the respective embroidery frame type can be determined by the control or corresponding sensors.

Gelöst wird diese Aufgabe durch eine Vorrichtung mit den Merkmalen des Patentanspruchs 1. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen definiert.This problem is solved by a device with the Features of claim 1. Advantageous Embodiments of the invention are in the dependent Defined claims.

Es gelingt mit der erfindungsgemässen Vorrichtung sowohl eine spielfreie Arretierung des Stickrahmens am Stickrahmenträger zu erlangen und gleichzeitig mit ein und demselben Arretier- und Kupplungsmittel den Stickrahmen nicht nur mit dem Stickrahmenträger zu verbinden, sondern diesen ohne vorheriges Lösen vom Stickrahmenträger zu verschieben, wieder zu arretieren und die Arretierstelle durch die Steuerung zu identifizieren. Durch Zusammenpressen der beiden Grifftasten kann folglich der Stickrahmen entweder wie bisher vom Stickrahmenträger abgehoben werden oder er kann längs einer am Stickrahmen befestigten Führungsbahn verschoben und an geeigneten Positionen festgestellt und die Befestigungsstelle am Stickrahmen von der Steuerung der Maschine erkannt werden. Das Verschieben des Stickrahmens bezüglich des Stickrahmenträgers erfolgt durch kurzes Zusammenpressen der Grifftasten und anschliessendes seitliches Verschieben des Stickrahmens. Das Einrasten an der benachbarten Arbeitsposition erfolgt danach von selbst. Beim Einrasten erfolgt zusätzlich ein spielfreies Verklemmen des Stickrahmens mit dem Stickrahmenträger, ohne dass dabei weitere Eingriffe der Bedienungsperson notwendig sind.The device according to the invention succeeds both a play-free locking of the embroidery hoop on To get embroidery frame holder and at the same time with one and the same locking and coupling means the embroidery hoop not only to connect to the embroidery frame support, but this without releasing it from the embroidery frame carrier move, lock again and the locking point identified by the controller. By The two handle buttons can therefore be pressed together Embroidery frame either from the embroidery frame carrier as before can be lifted off or it can be along one on the embroidery hoop fastened guideway and moved to suitable Positions determined and the attachment point on Embroidery frames can be recognized by the machine control. Moving the hoop with respect to the Embroidery frame holder is made by briefly pressing together the handle buttons and then moving them sideways of the embroidery frame. Snap into place on the neighboring one The working position then takes place automatically there is also a play-free jamming of the Embroidery frame with the embroidery frame holder without doing so further operator intervention is necessary.

Anhand eines illustrierten Ausführungsbeispiels wird die Erfindung näher erläutert. Es zeigen

Figur 1
eine perspektivische Darstellung einer HaushaltNähmaschine mit angebautem Stickmodul und aufgesetztem Stickrahmen,
Figur 2
eine Draufsicht auf das Stickmodul und den Stickrahmen sowie auf das vordere Ende des Unterarms der Nähmaschine mit der Stichplatte,
Figur 3
eine perspektivische Darstellung des Arretierund Kupplungsmittels ohne Verschalung beim Lösen der Arretierung an der Position "44",
Figur 4
eine perspektivische Darstellung des Arretierund Kupplungsmittels ohne Verschalung mit eingerasteter Klinke an der Position "44",
Figur 5
eine perspektivische Darstellung des Arretierund Kupplungsmittels mit Verschalung beim Lösen der Arretierung an der Position "44".
The invention is explained in more detail using an illustrated exemplary embodiment. Show it
Figure 1
a perspective view of a household sewing machine with attached embroidery module and attached embroidery frame,
Figure 2
a plan view of the embroidery module and the embroidery frame and on the front end of the forearm of the sewing machine with the stitch plate,
Figure 3
a perspective view of the locking and coupling means without casing when releasing the locking at position "44",
Figure 4
a perspective view of the locking and coupling means without casing with latched latch at position "44",
Figure 5
a perspective view of the locking and coupling means with casing when releasing the lock at position "44".

Die Nähmaschine gemäss Fig. 1 und 2 weist die üblichen, teilweise nicht näher bezeichneten Nähorgane, Bedienungselemente und sonstigen Ausrüstungsteile auf. Sie besteht im wesentlichen aus dem Maschinengehäuse 1, dem Freiarm 3 und der Grundplatte 5. Am Maschinengehäuse 1 sind beispielsweise ein Bildschirm 7, eine Rollkugel 9 mit zugeordneter Bestätigungstaste (OK) 11 und Löschtaste (CL) 13 und eine nicht näher bezeichnete Tastenreihe für die Direktwahl von Sonderfunktionen angeordnet. Die durch das Stichloch 15 hindurch mit einer nichtgezeigten Greifervorrichtung zusammenwirkende Nadel ist mit 17 bezeichnet, während der auf das nichtgezeigte Nähgut wirkende Nähfuss mit 19 bezeichnet ist.
Die Basiseinheit 21 eines durch nichtgezeigte mechanische und elektrische Verbindungsmittel mit der Nähmaschine 1 verbindbaren Stickmoduls 23 enthält die programmgesteuerten Antriebsmittel für den Stickrahmenträger 25 zum Antreiben des Trägers 25 in x-Richtung. Im Stickrahmenträger 25 sind weiter Antriebsmittel zum Antreiben des Stickrahmens 27 in y-Richtung angeordnet. Der Stickrahmen 27 ist, wie allgemein üblich, 2-teilig ausgebildet und besteht aus einem geschlossenen Innenrahmen 27a und einem geteilten Aussenrahmen 27b. Am Aussenrahmen 27b ist eine Spannvorrichtung 29 zum Festklemmen des Nähguts angeordnet. Der Stickrahmen 27 ist mittels einer allgemein mit 31 bezeichneten Befestigungsvorrichtung mit dem Stickrahmenträger 25 verbindbar.The sewing machine according to FIGS. 1 and 2 has the usual sewing organs, operating elements and other equipment parts, some of which are not described in detail. It consists essentially of the machine housing 1, the free arm 3 and the base plate 5. On the machine housing 1 are, for example, a screen 7, a trackball 9 with an assigned confirmation key (OK) 11 and delete key (CL) 13 and an unspecified row of keys for the Direct selection of special functions arranged. The needle cooperating through the tap hole 15 with a gripper device (not shown) is designated by 17, while the presser foot acting on the material not shown is designated by 19.
The base unit 21 of an embroidery module 23 which can be connected to the sewing machine 1 by mechanical and electrical connecting means (not shown) contains the program-controlled drive means for the embroidery frame carrier 25 for driving the carrier 25 in the x direction. Drive means for driving the embroidery frame 27 in the y direction are further arranged in the embroidery frame carrier 25. The embroidery hoop 27 is, as is generally customary, in two parts and consists of a closed inner hoop 27a and a divided outer hoop 27b. A clamping device 29 for clamping the sewing material is arranged on the outer frame 27b. The embroidery hoop 27 can be connected to the embroidery hoop carrier 25 by means of a fastening device, generally designated 31.

In den Figuren 3 und 4 ist im Vordergrund das Stickrahmen-Halteblech 35 sichtbar, von dem nur gerade die beiden Platten 37 mit den daran angeformten Gegenhaken 39 das Gehäuse des Stickrahmenträger 25 überragen (letzterer in Figur 3 weggelassen). Im Hintergrund ist ein kurzer Abschnitt des Stickrahmens 27 mit der daran befestigten Führungs- und Codierschiene 41 sichtbar. An der Führungsschiene 41 sind beispielsweise drei Codierabschnitte 43, 45, 44, letztere teilweise durch das Stickrahmen-Halteblech 35 verdeckt sichtbar. Die Codierabschnitte 43, 44, 45 können aus gezackten Kanten bestehen. Es ist auch möglich, diese als Strichcode zu gestalten (keine Abbildung).
Auf der Führungsschiene 41 ist beispielsweise in einer Führungsnut 47 ein Halte- und Rastelement, kurz Halteelement 49 genannt, welches die Befestigungsvorrichtung bildet, längsverschiebbar gelagert. Letzteres ist an Rast- und Halteschlitzen 51 im Bereich der Codierabschnitte 43 bis 45 an der Führungsschiene 41 feststell- oder einrastbar. Das Halteelement 49, das in den Figuren 3 und 4 ohne Abdeckung 57 dargestellt ist, umfasst einen Tragkörper 53, der die Führungsschiene 41 partiell umfasst, bzw. an seinen beiden Enden untergreift. Die beiden Enden des Tragkörpers 53 sind vorteilhafterweise als Endplatten 55 ausgestaltet, welchen die Abdeckung 57 stirnseitig abschliessen. Zwischen den beiden Endplatten 55 ist in der Mitte eine Längsführung 59 für zwei darin verschiebbar gelagerte Verriegelungsschieber 61 ausgebildet. An den Verriegelungsschiebern 61 sind nach oben abstehende Griffplatten 63 angeformt, welche die Abdeckung 57 oben überragen. Die Verriegelungsschieber 61 umfassen nach aussen gerichtete Keile, welche in Anlage mit im wesentlichen parallel zur ersten Keilfläche liegenden Schrägflächen 67 am Halteelment 49 gelangen. Die zweiten Keilflächen der Keile 65 liegen an den Platten 37 an und stützen dadurch den Stickrahmen 27 spielfrei am Stickrahmenträger 25 ab. Weiter umfassen die Verriegelungsschieber 61 je einen nach aussen gerichteten Verriegelungshaken 68 mit obenliegender Verriegelungsfläche, welche Verriegelungshaken 68 an der Unterseite der Gegenhaken 39 an den Platten 37 in Anlage gelangen.3 and 4, the embroidery frame holding plate 35 is visible in the foreground, of which only the two plates 37 with the counter hooks 39 formed thereon protrude beyond the housing of the embroidery frame support 25 (the latter omitted in FIG. 3). A short section of the embroidery frame 27 with the guide and coding rail 41 attached to it is visible in the background. On the guide rail 41, for example, three coding sections 43, 45, 44, the latter partially hidden by the embroidery frame holding plate 35. The coding sections 43, 44, 45 can consist of jagged edges. It is also possible to design this as a bar code (no picture).
On the guide rail 41, for example, a holding and latching element, briefly called holding element 49, which forms the fastening device, is mounted in a longitudinally displaceable manner in a guide groove 47. The latter can be ascertained or latched on latching and holding slots 51 in the area of the coding sections 43 to 45 on the guide rail 41. The holding element 49, which is shown in FIGS. 3 and 4 without a cover 57, comprises a support body 53 which partially surrounds the guide rail 41 or engages under it at both ends. The two ends of the support body 53 are advantageously designed as end plates 55, which are closed off at the end by the cover 57. Between the two end plates 55, a longitudinal guide 59 is formed in the middle for two locking slides 61 slidably mounted therein. Handle plates 63 projecting upwards are formed on the locking slides 61 and protrude above the cover 57 at the top. The locking slides 61 comprise outward-pointing wedges which come into contact with inclined surfaces 67 lying essentially parallel to the first wedge surface on the holding element 49. The second wedge surfaces of the wedges 65 rest on the plates 37 and thereby support the embroidery frame 27 on the embroidery frame support 25 without play. Furthermore, the locking slides 61 each comprise an outwardly directed locking hook 68 with an upper locking surface, which locking hooks 68 come into contact with the plates 37 on the underside of the counter-hooks 39.

Zwischen den beiden Verriegelungsschieber 61 sind zwei Schraubenfedern 69 eingespannt gehalten. Die aussenliegenden Enden der Federn 69 werden von an den Verriegelungsschiebern 61 angeformten Zapfen 71 gehalten. Die einander gegenüberliegenden Federenden liegen an einem Federgehäuse 73 an, welches eine Rastfeder 75 aufnimmt, die in einer lotrechten Ebene zu den Achsen der Schraubenfedern 69 und senkrecht zum Stickrahmen-Halteblech 35 liegt. Die Rastfeder 75 ist oben am Federgehäuse 73 abgestützt und wird unten von einer Nase 77 an einem einarmigen Rasthebel 79 gehalten. Der Rasthebel 79 ist mit seinem einen Ende am Halteelement 49 schwenkbar angelenkt. Das freie Ende ist als ein nach unten gerichteter Haken 81 ausgestaltet. Dessen geometrische Form ist derart ausgebildet, damit der Haken 81 im wesentlichen spielfrei in einen der Halteschlitze 51 an der Führungsschiene 41 eingreifen kann. Die beiden Schraubenfedern 69 können zudem in schalenförmigen Auflagen 83 an der Oberseite der Längsführung 59 abgestützt sein. Die Längsführung 59 übernimmt zudem die seitliche Führung des Rasthebels 79 und trägt auch den Schwenkbolzen 85. An einem der beiden Verriegelungsschieber 61 ist zudem ein Hebeorgan in Gestalt einer Auflauffläche 70 angebracht, welche beim Zusammenpressen der Verriegelungsschieber 61 mit den Griffplatten 63 unter das freie Ende des Rasthebels 79 greift und den Rasthaken 81 aus dem Schlitz 51 hebt.There are two between the two locking slides 61 Coil springs 69 held clamped. The outer ends of the springs 69 are from at the Locking slides 61 molded pin 71 held. The opposite spring ends are on one Spring housing 73, which receives a detent spring 75, which are in a perpendicular plane to the axes of the Coil springs 69 and perpendicular to the embroidery frame holding plate 35 lies. The detent spring 75 is at the top Spring housing 73 is supported and is below by a nose 77 held on a one-armed locking lever 79. The Locking lever 79 has one end on the holding element 49 articulated. The free end is as an after configured below hook 81. Whose geometric shape is designed so that the hook 81 essentially free of play in one of the holding slots 51 can engage on the guide rail 41. The two Coil springs 69 can also be cup-shaped Pads 83 on the top of the longitudinal guide 59 be supported. The longitudinal guide 59 also takes over lateral guidance of the locking lever 79 and also carries the Swivel pin 85. On one of the two Locking slide 61 is also a lifting element in Shape of a ramp surface 70 attached, which at Press the locking slide 61 together with the Handle plates 63 under the free end of the locking lever 79 engages and lifts the locking hook 81 out of the slot 51.

In Figur 4 ist auf der linken Bildseite ein Teil der Abdeckung 57 mit einer der Befestigungsschrauben 87 dargestellt. Weiter ist an der Abdeckung 57 eine unten offene Ausnehmung 89 sichtbar, in welche ein Führungsnocken 91 an der Platte 37 des Stickrahmen-Halteblechs 35 eingreift und dessen Höhenlage bezüglich des Halteelements 49 festlegt.
Im folgenden wird die Funktionsweise des Arretierens und des Verschiebens des Stickrahmens 27 erläutert.
Ein Stickrahmen 27 mit einem, zwei, drei oder mehr Stickflächenabschnitten und entsprechend vielen Halteschlitzen 51 und Codierabschnitten 43 bis 45 wird nach dem Zusammendrücken der beiden Griffplatten 63 vertikal von oben auf die beiden Platten 37 am Stickrahmen-Halteblech 35 aufgeschoben, bis die beiden Führungsnocken 91 vollständig in die Ausnehmungen 89 eingeführt sind. Nun kann der auf die Griffplatten 63 ausgeübte Druck durch die Finger der einen Hand soweit verringert werden, dass einerseits der Haken 81 am Hebel 79 auf der Oberfläche der Führungsschiene 41 federnd aufliegt, andererseits jedoch die Keile 65 noch nicht satt an den Schrägflächen 67 anliegen und folglich ein Verschieben des Stickrahmens 17 in der Führungsnut 47 möglich ist. Beim weiteren Lösen der Griffplatten 63 schieben sich die Verriegelungshaken 68 unter die Gegenhaken 39 an den Platten 37. Dadurch ist der Stickrahmen 27 in vertikaler Richtung am Träger 25 gehalten.
Sobald beim seitlichen Schieben der Haken 81 in den Bereich eines Schlitzes 51 an der Führungsschiene 41 gelangt, schwenkt der Hebel 79 durch die Kraft der Rastfeder 75 nach unten und arretiert den Stickrahmen 27 am Stickrahmenträger 25 beispielsweise im Bereich des Codierabschnitts 44 (Fig 3/4). Wenn an den beiden Griffplatten 63 keine Kräfte mehr wirken, drücken die beiden Schraubenfedern 69 die Keile 65 an die Schrägflächen 67. Durch das Spiel des Halteelements 49 in der Führungsnut 47 wird der Tragkörper 59 an die beiden Platten 37 angepresst. Es liegt nun in x- und y-Richtung eine völlig spielfreie Verbindung zwischen Stickrahmen 27 und Träger 25 vor. Durch den Eingriff des Hakens 81 im Schlitz 51 an der Codierstelle 44 kommen die Codiermittel, hier Zacken, vor ein nicht dargestelltes Sensorelement am Träger 25, welches zum einen anhand der Zacken die Grösse und Ausbildung des Stickrahmens 27 erkennt und zudem auch die Stelle, an welcher der Stickrahmen 27 mit dem Träger 25 verbunden ist. Die vom Sensorelement erfassten Daten werden der Maschinensteuerung mitgeteilt. Anschliessend kann die Bestickung des dem Codierabschnitt 44 zugeordneten Stickfeldes innerhalb des Stickrahmens 27 erfolgen. Um auch das benachbarte Stickfeld bearbeiten zu können, werden die Griffplatten 63 mit zwei Finger einer Hand soweit zusammengepresst, bis der Haken 81 den Schlitz 51 und die Keile 65 die satte Anlage verlassen haben und ein seitliches Verschieben des Stickrahmens 27 am Stickrahmenträger 25 möglich ist. Sobald der Haken 81 am benachbarten Schlitz 51 einrastet wird von der nicht dargestellten Sensorik anhand der Ausbildung des Codierabschnitts 43 die neue Lage des Stickrahmens 27 ermittelt und der Steuerung der Nähmaschine 1 zur Verfügung gestellt. Diese kann nun das gespeicherte Nähoder Stickmuster im neuen Stickfeld an der richtigen Stelle weiterführen.FIG. 4 shows part of the cover 57 with one of the fastening screws 87 on the left-hand side of the figure. Also visible on the cover 57 is a recess 89 which is open at the bottom and into which a guide cam 91 engages on the plate 37 of the embroidery frame holding plate 35 and defines its height with respect to the holding element 49.
In the following the operation of locking and moving the embroidery frame 27 is explained.
An embroidery frame 27 with one, two, three or more embroidery surface sections and a corresponding number of holding slots 51 and coding sections 43 to 45 is pushed vertically from above onto the two plates 37 on the embroidery frame holding plate 35 after the two handle plates 63 have been pressed together, until the two guide cams 91 are fully inserted into the recesses 89. Now the pressure exerted on the grip plates 63 by the fingers of one hand can be reduced to such an extent that on the one hand the hook 81 rests on the lever 79 on the surface of the guide rail 41, but on the other hand the wedges 65 do not yet fit snugly against the inclined surfaces 67 and consequently, moving the embroidery frame 17 in the guide groove 47 is possible. When the handle plates 63 are loosened further, the locking hooks 68 slide under the counter hooks 39 on the plates 37. As a result, the embroidery frame 27 is held on the carrier 25 in the vertical direction.
As soon as the hook 81 reaches the area of a slot 51 on the guide rail 41 during the lateral pushing, the lever 79 pivots downward due to the force of the detent spring 75 and locks the embroidery frame 27 on the embroidery frame support 25, for example in the area of the coding section 44 (Fig. 3/4 ). When no more forces are acting on the two handle plates 63, the two coil springs 69 press the wedges 65 against the inclined surfaces 67. The support body 59 is pressed against the two plates 37 by the play of the holding element 49 in the guide groove 47. There is now a completely play-free connection between the embroidery frame 27 and the carrier 25 in the x and y directions. Due to the engagement of the hook 81 in the slot 51 at the coding point 44, the coding means, here serrations, arrive in front of a sensor element (not shown) on the carrier 25, which on the one hand recognizes the size and design of the embroidery frame 27 on the basis of the serrations, and also the position which the embroidery frame 27 is connected to the carrier 25. The data recorded by the sensor element are communicated to the machine control. The embroidery of the embroidery field assigned to the coding section 44 can then take place within the embroidery frame 27. In order to be able to also process the adjacent embroidery field, the grip plates 63 are pressed together with two fingers of one hand until the hook 81, the slot 51 and the wedges 65 have left the full system and a lateral displacement of the embroidery frame 27 on the embroidery frame carrier 25 is possible. As soon as the hook 81 snaps into the adjacent slot 51, the sensor system (not shown) uses the design of the coding section 43 to determine the new position of the embroidery frame 27 and to make it available to the control of the sewing machine 1. This can now continue the saved sewing or embroidery pattern in the new embroidery field at the correct position.

Claims (9)

Vorrichtung zum lösbaren Befestigen eines Stickrahmens (27) an einem Stickrahmenträger (25) eines Stickmoduls (23) einer programmgesteuerten Näh- oder Stickmaschine (1), umfassend einen im Stickrahmenträger (25) eingesetzten Antrieb mit einem daran befestigten Stickrahmen-Halteblech (35), ein am Stickrahmen (27) angebrachtes Halte- und Rastelement (49) mit zwei gegensinnig mittels Grifftasten (63) verschiebbaren, federbelasteten Verriegelungsschiebern (61), welche Verriegelungsschieber (61) mit je einem Verriegelungshaken (68) an entsprechend ausgebildeten Rastflächen an Ausnehmungen (70) an den Platten (37) am Stickrahmen-Halteblech (35) eingreifen, dadurch gekennzeichnet, dass das Halteelement (49) entlang einer Führungsschiene (41) am Stickrahmen (27) verschiebbar gelagert ist und dass an der Führungsschiene (41) oder am Stickrahmen (27) Codierabschnitte (43,44,45) und Rastschlitze (51) angebracht sind.Device for detachably attaching an embroidery frame (27) to an embroidery frame support (25) of an embroidery module (23) of a program-controlled sewing or embroidery machine (1), comprising a drive used in the embroidery frame support (25) with an embroidery frame holding plate (35) attached to it, a holding and locking element (49) attached to the embroidery frame (27) with two spring-loaded locking slides (61) which can be displaced in opposite directions by means of handle buttons (63), which locking slides (61) each have a locking hook (68) on correspondingly designed locking surfaces on recesses (70 ) engage on the plates (37) on the embroidery frame holding plate (35), characterized in that the holding element (49) is displaceably mounted on the embroidery frame (27) along a guide rail (41) and that on the guide rail (41) or on the embroidery frame (27) Coding sections (43,44,45) and locking slots (51) are attached. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass am Halte- und Rastelement (49) Positionier- und Klemmkeile (65) angebracht sind, welche den Stickrahmen (27) bezüglich dem Stickrahmenträger (25) in x- und y-Richtung spielfrei am Stickrahmenträger (25) festhalten.Device according to claim 1, characterized in that positioning and clamping wedges (65) are attached to the holding and latching element (49) , said wedges (65) being free of play in the x and y direction on the embroidery frame carrier (x) with respect to the embroidery frame carrier (25). 25) hold on. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zwischen den beiden Verriegelungsschiebern (61) ein Rastmittel eingesetzt ist, mit welchem der Stickrahmen (27) gegen seitliches Verschieben am Stickrahmenträger (25) spielfrei arretierbar ist.Device according to one of claims 1 or 2, characterized in that a latching means is inserted between the two locking slides (61), with which the embroidery frame (27) can be locked without play against lateral displacement on the embroidery frame carrier (25). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Rastmittel einen vertikal verschiebbaren federbelasteten Rasthaken (81) umfasst, welcher durch Zusammenpressen der Griffplatten (63) aus einer Raststellung in eine Schiebestellung anhebbar ist und durch eine Rastfeder (75) wieder in die Raststellung führbar ist.Apparatus according to claim 3, characterized in that the latching means comprises a vertically displaceable spring-loaded latching hook (81) which can be lifted from a latched position into a sliding position by pressing the handle plates (63) together and can be guided back into the latched position by a latching spring (75) , Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das Rastmittel als ein um eine horizontal liegende Achse schwenkbarer Hebel (79) ausgebildet und an dessen einen Ende der Rasthaken (81) angeformt ist.Apparatus according to claim 4, characterized in that the latching means is designed as a lever (79) which can be pivoted about a horizontally lying axis and on one end of which the latching hook (81) is formed. Vorrichtung nach einem der Ansprüche 4 und 5, dadurch gekennzeichnet, dass das Rastmittel durch die in einem Federgehäuse (73) geführte Rastfeder (75) in einen Rastschlitz (51) an einer Führungsschiene (41) einpressbar ist.Device according to one of claims 4 and 5, characterized in that the latching means can be pressed into a latching slot (51) on a guide rail (41) by the latching spring (75) guided in a spring housing (73). Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Positionier- und Klemmkeile (65) an den nach aussen gerichteten Enden der Verriegelungsschieber (61) ausgebildet sind und dass deren erste Keilfläche auf einer Schrägfläche (67) am Halteelement (49) in Anlage gelangen und deren zweite Keilfläche in Anlage mit den Platten (37) stehen.Device according to one of claims 1 to 6, characterized in that the positioning and clamping wedges (65) are formed on the outwardly directed ends of the locking slide (61) and that their first wedge surface on an inclined surface (67) on the holding element (49) come into contact and the second wedge surface is in contact with the plates (37). Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass an einem der Verriegelungsschieber (61) eine als Hebeorgan fungierende Auflauffläche (70) ausgebildet und dazu bestimmt ist, beim Zusammenführen der beiden Verriegelungsschieber (61) den Haken (81) am Rasthebel (79) aus dem Rastschlitz (51) herauszuführen.Device according to one of claims 5 to 7, characterized in that on one of the locking slides (61) a run-up surface acting as a lifting member (70) is formed and is intended, when the two locking slides (61) are brought together, to hook (81) on the locking lever ( 79) out of the locking slot (51). Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Codierabschnitte (43,44,45) Informationen über die Grösse und Form des Stickrahmens (27) sowie über die geometrische bzw. physikalische Lage am Stickrahmen (27) enthalten.Device according to one of claims 1 to 8, characterized in that the coding sections (43, 44, 45) contain information about the size and shape of the embroidery frame (27) and about the geometric or physical position on the embroidery frame (27).
EP02405348A 2001-06-25 2002-04-29 Device for removably attaching an embroidery frame to an embroidery frame carrier Expired - Lifetime EP1270788B1 (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
DE102010020555A1 (en) 2009-06-12 2010-12-16 Bernina International Ag hoop
EP2781639A1 (en) * 2013-03-21 2014-09-24 Brother Kogyo Kabushiki Kaisha Sewing machine
US9163344B2 (en) 2013-03-21 2015-10-20 Brother Kogyo Kabushiki Kaisha Sewing machine and embroidery frame

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Publication number Priority date Publication date Assignee Title
JP4605443B2 (en) * 2004-06-30 2011-01-05 ブラザー工業株式会社 Embroidery frame transfer device for embroidery sewing machine
CN109706656B (en) * 2019-03-11 2024-04-30 浙江越隆缝制设备有限公司 Tabouret structure with automatic limiting function
CH718422A2 (en) * 2021-03-11 2022-09-15 Bernina Int Ag Embroidery system and hoop arrangement.

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DE29612102U1 (en) * 1996-07-11 1996-09-12 Gegauf Fritz Ag Device for automatically identifying an embroidery frame on a sewing or embroidery machine
DE29614512U1 (en) * 1996-08-21 1996-10-02 Gegauf Fritz Ag Device for releasably attaching an embroidery frame

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EP0860533A3 (en) * 1997-02-25 1999-04-07 G.M. Pfaff Aktiengesellschaft Method for embroidering oversized patterns
JP4239319B2 (en) * 1999-09-30 2009-03-18 ブラザー工業株式会社 sewing machine

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DE29612102U1 (en) * 1996-07-11 1996-09-12 Gegauf Fritz Ag Device for automatically identifying an embroidery frame on a sewing or embroidery machine
DE29614512U1 (en) * 1996-08-21 1996-10-02 Gegauf Fritz Ag Device for releasably attaching an embroidery frame

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020555A1 (en) 2009-06-12 2010-12-16 Bernina International Ag hoop
EP2781639A1 (en) * 2013-03-21 2014-09-24 Brother Kogyo Kabushiki Kaisha Sewing machine
US9163344B2 (en) 2013-03-21 2015-10-20 Brother Kogyo Kabushiki Kaisha Sewing machine and embroidery frame
US9476150B2 (en) 2013-03-21 2016-10-25 Brother Kogyo Kabushiki Kaisha Sewing machine

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EP1270788B1 (en) 2006-09-13
DE50208111D1 (en) 2006-10-26
US6553926B2 (en) 2003-04-29
ATE339539T1 (en) 2006-10-15
US20020195034A1 (en) 2002-12-26

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