DE539770C - Device for drawing conical seam tubes from sheet metal - Google Patents
Device for drawing conical seam tubes from sheet metalInfo
- Publication number
- DE539770C DE539770C DENDAT539770D DE539770DD DE539770C DE 539770 C DE539770 C DE 539770C DE NDAT539770 D DENDAT539770 D DE NDAT539770D DE 539770D D DE539770D D DE 539770DD DE 539770 C DE539770 C DE 539770C
- Authority
- DE
- Germany
- Prior art keywords
- sheet metal
- rollers
- pressure
- seam tubes
- conical seam
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
- B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
- B21C37/185—Making tubes with varying diameter in longitudinal direction conical tubes starting from sheet material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Vorrichtung zum Ziehen konischer Nahtrohre aus Blech Vorrichtungen zum Ziehen konischer Nahtrohre aus Blech mit federnd an das Werkstück angepreßten Werkzeugen sind bekannt.Device for drawing conical seam tubes from sheet metal devices for pulling conical seam tubes made of sheet metal with resiliently pressed against the workpiece Tools are known.
Die vorliegende Erfindung betrifft eine besonders vorteilhafte Ausbildung einer derartigen Vorrichtung, die z. B. erlaubt, das bekannte allmähliche Umformen des zugeschnittenen Blechstreifens in mehreren Arbeitsgängen, bei welchen das Umbiegen des Bleches stufenweise erfolgt und der Werkstoff also weniger beansprucht wird, mittels eines einzigen Ziehkalibers durchzuführen.The present invention relates to a particularly advantageous embodiment such a device z. B. allowed the well-known gradual forming of the cut sheet metal strip in several operations, in which the bending of the sheet takes place in stages and the material is therefore less stressed, to be carried out by means of a single drawing caliber.
Das NTeue der Vorrichtung besteht in einem Ringe, in welchem mit der Richtung auf dessen Mittelpunkt zu mehrere unter starkem Federdruck stehende Druckkörper in Anständen voneinander angeordnet sind, wobei die Druckkörper den Blechstreifen gegen den Dorn drücken und ihn um diesen herumziehen; die Druckkörper sind hierbei zur Vermeidung der Reibung an ihrem Arbeitsende mit an sich bekannten flachen oder gekehlten Rollen versehen und zweckmäßig so zum Dorn eingestellt, daß ihre Achse in der Drucklinie liegt. Dadurch, daß die Rollen in Abständen voneinander angeordnet sind, wird ermöglicht, daß die Enden des Bleches bei den ersten Arbeitsgängen, d. h. vor dem Schließen zur Rohrform, zwischen den Rollen nach außen vorstehen.The novelty of the device consists in a ring in which the Direction towards its center to several pressure bodies under strong spring pressure are arranged at intervals from one another, the pressure body being the sheet metal strip press against the mandrel and pull it around it; the pressure hulls are here to avoid friction at their working end with flat or known per se grooved rollers provided and appropriately adjusted to the mandrel that their axis lies in the print line. In that the rollers are arranged at a distance from one another allows the ends of the sheet to be removed in the first few passes, i.e. H. before closing to the tube shape, protrude outwards between the rollers.
Ein Ausführungsbeispiel der neuen Vorrichtung ist in der Zeichnung dargestellt.An embodiment of the new device is shown in the drawing shown.
Es zeigen den Druckknopf im Schnitt durch die Druckkörper Fig. i beim ersten, Fig. 2 beim zweiten.It show the push button in section through the pressure body Fig. I at first, Fig. 2 for the second.
Fig. 3 beim letzten Arbeitsgang.Fig. 3 in the last operation.
Der Druckknopf besteht aus dem Ring a, auf bzw. in welchem drei Führungshülsen b angeordnet sind, durch deren Verschlußstück c eine Stellschraube d geführt ist. In jeder Hülse b bewegt sich ein Bolzen f, der mit Armen g eine Achse lz hält, auf der eine Rolle drehbar gelagert ist; diese Rollen könnten sämtlich, wie die Rollen i, flach gestaltet sein; um jedoch das Schließen des Rohres im letzten Arbeitsgange wirksamer zu bewerkstelligen, ist eine Rolle k vorgesehen, die etwa dem Umfange ,des Dornes entsprechend ausgekehlt ist, so daß sie einen größeren Teil des Bleches unter Druck setzen kann. Zwischen dem Bolzen f und dem Verschlußstück c sind Federn, am zweckmäßigsten Plattenfedern in, in der Führungshülse b gelagert, deren Druck durch die Stellschraube d geregelt wird.The push button consists of the ring a, on or in which three guide sleeves b are arranged, through the closure piece c an adjusting screw d is guided. In each sleeve b, a bolt f, which holds an axis lz with arms g, moves on a roller is rotatably mounted; these roles could all, like the roles i, be made flat; however, to close the pipe in the last work cycle To accomplish more effectively, a role k is provided, which is approximately the size , the mandrel is fluted accordingly so that it covers a larger part of the sheet metal can put pressure. Between the bolt f and the locking piece c are springs, the most expedient plate springs in, stored in the guide sleeve b, their pressure is regulated by the adjusting screw d.
Das zum Rohr zu ziehende Blech st wird in üblicher Weise zugespitzt und am Anfange zwischen Walzen oder durch Hämmern um den Dorn o etwas gebogen, worauf Blech und Dorn mit einer bekannten Ziehvorrichtung durch den Kopf gezogen werden. Auf diese Weise wird der erste Arbeitsgang durchgeführt.The sheet to be drawn to the pipe st is pointed in the usual way and at the beginning between rollers or by hammering around the mandrel o something bent, whereupon Sheet metal and mandrel are pulled through the head with a known pulling device. This is how the first step is carried out.
Dann wird der Kopf, wie Fig.2 zeigt, um 18o° gedreht; die Spitze des Bleches wird, wie vor, zurechtgebogen und Blech mit Dorn im zweiten Arbeitsgange durch den Kopf gezogen.Then, as shown in FIG. 2, the head is rotated by 180 °; the top of the Sheet metal is bent, as before, and sheet metal with a mandrel in the second operation pulled through the head.
Für den letzten Arbeitsgang (Fig. 3) wird der Kopf wieder um 18o° gedreht, das Blech entsprechend vorbereitet und durchgezogen, wobei die Rolle k wirksam das Schließen des Rohres vollführt.For the last work step (Fig. 3) the head is turned back by 180 ° rotated, the sheet prepared accordingly and pulled through, the role k effectively closes the pipe.
Dasselbe Ziehkaliber findet also für alle Arbeitsgänge Verwendung, Die Druckkörper sind so angeordnet, daß ihre Achsen in der Drucklinie liegen, also den Druck senkrecht aufnehmen, wodurch Reibungen der Bolzen f innerhalb ihrer Führungshülse vermieden werden.The same drawing caliber is used for all operations, The pressure hulls are arranged so that their axes lie in the pressure line, that is absorb the pressure vertically, causing friction of the bolts f within their guide sleeve be avoided.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE539770T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE539770C true DE539770C (en) | 1931-12-02 |
Family
ID=6558686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT539770D Expired DE539770C (en) | Device for drawing conical seam tubes from sheet metal |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE539770C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2764214A (en) * | 1952-09-11 | 1956-09-25 | Western Electric Co | Sheath forming apparatus |
| US2948324A (en) * | 1955-10-18 | 1960-08-09 | Pirelli General Cable Works | Manufacture of tubing and tubular sheathing |
-
0
- DE DENDAT539770D patent/DE539770C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2764214A (en) * | 1952-09-11 | 1956-09-25 | Western Electric Co | Sheath forming apparatus |
| US2948324A (en) * | 1955-10-18 | 1960-08-09 | Pirelli General Cable Works | Manufacture of tubing and tubular sheathing |
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