DE1017582B - Cutting device on machines for the independent production of coil springs with a connecting eyelet each at the beginning and end of the spring wire - Google Patents
Cutting device on machines for the independent production of coil springs with a connecting eyelet each at the beginning and end of the spring wireInfo
- Publication number
- DE1017582B DE1017582B DED22996A DED0022996A DE1017582B DE 1017582 B DE1017582 B DE 1017582B DE D22996 A DED22996 A DE D22996A DE D0022996 A DED0022996 A DE D0022996A DE 1017582 B DE1017582 B DE 1017582B
- Authority
- DE
- Germany
- Prior art keywords
- bending
- cutting
- mandrels
- cutting device
- knife
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F35/00—Making springs from wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F35/00—Making springs from wire
- B21F35/02—Bending or deforming ends of coil springs to special shape
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
Description
Die Erfindung bezieht sich auf eine Abschneidevorrichtung an Maschinen zur selbsttätigen Herstellung von Schraubenfedern mit je einer Verbindungsöse am Anfang und Ende des Federdrahtes, wie sie beispielsweise für Federeinlagen in Polstermöbeln und Matratzen verwendet werden. Bei den bekannten Maschinen dieser Art ist die Abschneidevorrichtung für den fortlaufend zugeführten Werkstoffdraht in der Regel zwischen zwei mit Biegenasen versehenen, um nicht drehbare Kerne oszillierenden, als Hohlzylinder ausgebildeten Biegedornen für das Anbiegen der VerbindungsÖsen in der Weise angeordnet, daß ein zwischen den Biegedornen und innerhalb der Umfangslinie der gewundenen Schraubenfeder feststehendes Messer mit einem außerhalb der Umfangslinie der Schraubenfeder gelagerten und quer zur Schraubenfederachse in Richtung auf diese beweglichen Gegenmesser zusammenwirkt, wobei die Schneidkanten der Messer etwa parallel zur Schraubenfederachse gerichtet sind.The invention relates to a cutting device on machines for automatic production of coil springs with a connection eyelet each at the beginning and end of the spring wire, like them For example, they can be used for spring inserts in upholstered furniture and mattresses. With the known Machines of this type are the cutting device for the continuously fed material wire in the Usually between two with bending lugs, oscillating around non-rotating cores, as a hollow cylinder formed bending mandrels for the bending of the connecting eyelets arranged in such a way that a between the bending mandrels and within the circumference the coiled helical spring with a fixed knife outside the circumference of the Helical spring mounted and transversely to the helical spring axis in the direction of this movable counter knife cooperates, the cutting edges of the knife directed approximately parallel to the helical spring axis are.
Diese bekannten Abschneidevorrichtungen nehmen zwischen den zum Anbiegen der Verbindungsösen dienenden Biegedornen einen verhältnismäßig breiten Raum in Anspruch, und sie sind daher, wenn sie nicht einen Doppelschnitt mit entsprechendem Materialabfall ausführen sollen, nur für solche Maschinen geeignet, die zur Herstellung von Schraubenfedern mit einhakigen Verbindungsösen und verhältnismäßig langen Anfangsschenkeln der Endhaken dieser Verbindungsösen dienen. Sie haben ferner den Nachteil, daß das gegen den abzuschneidenden, während des Schneidevorganges zwischen den Biegenasen und den nicht drehbaren Kernen der Biegedorne liegenden Federdraht bewegte Messer dazu neigt, den Draht aus der Ösenbiegeebene herauszudrängen, so daß es bei dem unmittelbar auf das Abschneiden folgenden ösenbiegevorgang leicht zu Biegefehlern kommt. Dadurch ergibt sich bei den Maschinen zur selbsttätigen Herstellung solcher Polsterfedern stets eine nicht unerhebliche Menge von Ausschuß.These known cutting devices take between the connecting eyelets for bending used bending mandrels take up a relatively wide space, and they are therefore when they are not should make a double cut with the corresponding waste of material, only for such machines suitable for the manufacture of coil springs with single-hook lugs and relatively long start legs of the end hooks of these connecting eyelets are used. They also have the disadvantage that the against the cut, during the cutting process between the bending lugs and the non-rotatable cores of the bending mandrels lying spring wire moving knife tends to the wire to push out of the eyelet bending plane, so that it is immediately following the cutting loop bending process easily leads to bending errors. This results in the machines for automatic Production of such upholstery springs always involves a not inconsiderable amount of scrap.
Die Erfindung verfolgt im wesentlichen die Aufgabe, diese Mängel zu beseitigen. Zu diesem Zweck ist bei der Abschneidevorrichtung gemäß der Erfindung das während des Schneidevorganges zwischen den Biegedornen für die Endhaken der Ösen feststehende Messer mit seiner Schneidkante nicht parallel, sondern quer zur Schraubenfederachse gerichtet, und zwar etwa in der Ebene der Stirnflächen der Biegedorne. Das beim Schneidevorgang gegen das feststehende Messer geführte bewegbare Messer hat dabei eine Arbeitsrichtung, die etwa parallel zur Schraubenfederachse gegen die Stirnflächen der Biegedorne verläuft, so daß der abzuschneidende Federdraht durch das bewegte Messer gegen die AbschneidevorrichtungThe main object of the invention is to remedy these deficiencies. To this end is in the cutting device according to the invention during the cutting process between Knives fixed to the bending mandrels for the end hooks of the eyelets with their cutting edge not parallel, but directed transversely to the coil spring axis, approximately in the plane of the end faces of the Bending mandrels. The movable knife, which is guided against the fixed knife during the cutting process, has thereby a working direction that is approximately parallel to the helical spring axis against the end faces of the Bending mandrels extends so that the spring wire to be cut through the moving knife against the Cutting device
an Maschinen zur selbsttätigenon machines for automatic
Herstellung von SchraubenfedernManufacture of coil springs
mit je einer Verbindungsöse
am Anfang und Ende des Federdrahteswith one connection eyelet each
at the beginning and end of the spring wire
Anmelder:Applicant:
Robert Dedering,
Bielefeld-Sieker, Nachtigallstr. 23Robert Dedering,
Bielefeld-Sieker, Nachtigallstr. 23
Robert Dedering, Bielefeld-Sieker,
ist als Erfinder genannt wordenRobert Dedering, Bielefeld-Sieker,
has been named as the inventor
Stirnflächen der Biegedorne gedrückt und dort zwischen den Biegenasen und den nicht drehbaren Kernen festgehalten wird. Dadurch wird das Herausgleiten des Drahtes aus der Ösenbiegeebene verhindert und ein sicheres Erfassen der Drahtenden durch die im unmittelbaren Anschluß an das Abschneiden sich in Drehbewegung setzenden Biegenasen gewährleistet.The end faces of the bending mandrels are pressed and there between the bending lugs and the non-rotating cores is being held. This prevents the wire from sliding out of the bending plane of the eye and a reliable gripping of the wire ends by the in the immediate connection to the cutting itself in Rotary movement setting bending lugs guaranteed.
Zweckmäßig ist das während des Schneidevorganges feststehende Messer der Abschneidevorrichtung gemäß der Erfindung in einem an der Lagerplatte der Ösenbiegedorne senkrecht zur Schraubenfederachse verschiebbaren Schlitten befestigt, an dem auch das beim Abschneidevorgang gegen das feststehende Messer bewegte Messer mittels eines diese tragenden Schwinghebels derart gelagert sein kann, daß ihre Schwingbewegung und damit ihre Arbeitsrichtung etwa parallel zur Schraubenfederachse in Richtung auf die Stirnflächen der Ösenbiegedorne verläuft. Diese Anordnung hat den Vorteil, daß die Abschneidevorrichtung nur einen sehr geringen Raum zwischen den Ösenbiegedornen zur Durchführung des Abschneidevorganges benötigt, so daß die Endhaken der zu biegenden Ösen in der für Doppelhakenösen erforderlichen kurzen Abmessung gehalten werden können. Sie hat außerdem den Vorteil, daß das bewegte und nach Durchführung des Abschneidevorganges zurückschwingende Messer zugleich mit dem während des Abschneidevorganges feststehenden Messer aus dem Arbeitsbereich der ösenbiegedorne zurückgezogen werden kann, so daß sie den ösenbiegevorgang, das Auswerfen der fertigen Polsterfeder und den Windevorgang der folgenden Schraubenfeder nicht behindert.The knife of the cutting device, which is fixed during the cutting process, is expedient of the invention in one on the bearing plate of the eyelet bending mandrel perpendicular to the helical spring axis slidable carriage attached, on which also the during the cutting process against the stationary Knife moving knife can be mounted by means of a rocker arm carrying them so that their Oscillating movement and thus its working direction approximately parallel to the helical spring axis in the direction runs on the end faces of the eyelet bending mandrels. This arrangement has the advantage that the cutting device only a very small space between the eyelet bending mandrels to carry out the cutting process required so that the end hooks of the eyelets to be bent in the direction required for double hook eyelets short dimension can be kept. It also has the advantage that the moving and after the cutting process has been carried out, the knife swinging back at the same time as the one during the The cutting process of the fixed knife is withdrawn from the working area of the eyelet bending mandrel can be so that the loop bending process, the ejection of the finished upholstery spring and the winding process the following coil spring is not obstructed.
709 756/9709 756/9
Claims (3)
feststehende Messer sich mit seiner Schneidkante in
einer quer zur SchraubenfederaChse und etwa parallelTo keep bending mandrels 9,10 as small as possible. The cutting device 24, 25, 26, 27 designed according to the invention meets this requirement to a particularly high degree. Of the two knives 25, 26 required to cut the spring wire 1, only the knife 26, which is stationary during the cutting process, as shown in FIGS. 25 and above the connecting line between the device arranged eyelet bending mandrels directed their axes of rotation, the cutting edge being this, while that between the eyelet bending mandrels
fixed knife with its cutting edge in
one at right angles to the coil spring axis and roughly parallel
Deutsche Patentschriften Nr. 12 156, 552 004,
407.Considered publications:
German patent specifications No. 12 156, 552 004,
407
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED22996A DE1017582B (en) | 1954-04-15 | 1954-04-15 | Cutting device on machines for the independent production of coil springs with a connecting eyelet each at the beginning and end of the spring wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED22996A DE1017582B (en) | 1954-04-15 | 1954-04-15 | Cutting device on machines for the independent production of coil springs with a connecting eyelet each at the beginning and end of the spring wire |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1017582B true DE1017582B (en) | 1957-10-17 |
Family
ID=7037665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED22996A Pending DE1017582B (en) | 1954-04-15 | 1954-04-15 | Cutting device on machines for the independent production of coil springs with a connecting eyelet each at the beginning and end of the spring wire |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1017582B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE12156C (en) * | G. DEUTGEN & CO. in Düren b. Cöln | Coil spring winding machine | ||
DE552004C (en) * | 1928-04-24 | 1932-06-09 | L A Young Spring & Wire Corp | Machine for the production of coil springs with a knotted winding and device for feeding the finished springs to a collection point |
DE901407C (en) * | 1950-12-07 | 1954-01-11 | Hermann Dederichs | Method for the automatic production of coil springs with eyelets arranged at each end |
-
1954
- 1954-04-15 DE DED22996A patent/DE1017582B/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE12156C (en) * | G. DEUTGEN & CO. in Düren b. Cöln | Coil spring winding machine | ||
DE552004C (en) * | 1928-04-24 | 1932-06-09 | L A Young Spring & Wire Corp | Machine for the production of coil springs with a knotted winding and device for feeding the finished springs to a collection point |
DE901407C (en) * | 1950-12-07 | 1954-01-11 | Hermann Dederichs | Method for the automatic production of coil springs with eyelets arranged at each end |
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