DE70702C - Device for sheathing wire or cables with formable insulating material - Google Patents
Device for sheathing wire or cables with formable insulating materialInfo
- Publication number
- DE70702C DE70702C DENDAT70702D DE70702DA DE70702C DE 70702 C DE70702 C DE 70702C DE NDAT70702 D DENDAT70702 D DE NDAT70702D DE 70702D A DE70702D A DE 70702DA DE 70702 C DE70702 C DE 70702C
- Authority
- DE
- Germany
- Prior art keywords
- hollow mandrel
- cables
- support ribs
- conductor wire
- insulating material
- 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
- 239000011810 insulating material Substances 0.000 title description 5
- 210000000614 Ribs Anatomy 0.000 claims description 12
- 239000000899 Gutta-Percha Substances 0.000 claims description 6
- 229920000588 Gutta-percha Polymers 0.000 claims description 6
- 240000000342 Palaquium gutta Species 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims 1
- 230000003068 static Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electric Cables (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMPATENTAM
Bei Telegraphenkabeln, beispielsweise Unterseekabeln, welche auf hohen Druck beansprucht werden, ist es erforderlich, als Isolirstoff Guttapercha oder einen ähnlichen Stoff zu verwenden, der dem Druck Widerstand leistet. Damit nun der Leitungsdraht (Kabelkern) mit diesem Isolirstoff möglichst wenig in Berührung kommt und ein Kabel mit sehr geringer statischer Capacität erhalten wird, erfolgt nach vorliegender Erfindung die Aufbringung des Isolirstoifes mit Hülfe einer Ziehform, gegen welche ein zur Einführung des Leitungsdrahtes dienender Hohldorn vortritt, der so gestaltet ist, dafs, wenn der Isolirstoff in formfähigem Zustand unter Druck über den Hohldorn hinweg in die Form vorgetrieben wird, eine oder mehrere Stützrippen sich im Innern der Umhüllung bilden, die eine verhältnifsmäfsig nur sehr geringe Berührungsfläche für den Draht liefern.In the case of telegraph cables, for example submarine cables, which are subjected to high pressure, it is necessary to use gutta-percha as an insulating material or use a similar material that will resist the pressure. So that now the lead wire (cable core) with this insulating material comes into contact with as little as possible and a cable with very little static Capacity is obtained, the application of the insulating material takes place according to the present invention with the aid of a drawing form, against which a wire is used to insert the lead wire Hollow mandrel steps forward, which is designed in such a way that, when the insulating material is in a malleable state is propelled under pressure over the hollow mandrel into the mold, one or more Supporting ribs are formed in the interior of the envelope, which are relatively only very small Provide contact surface for the wire.
Eine solche Vorrichtung ist in Fig. 1 im Längsschnitt und in Fig. 2 im Grundrifs dargestellt. Fig. 3 zeigt ein mit Hülfe dieser Vorrichtung hergestelltes Kabel.Such a device is shown in Fig. 1 in longitudinal section and in Fig. 2 in outline. Fig. 3 shows a cable made with the aid of this device.
Die Vorrichtung besteht aus einem Hohldorn A\ von welchem gegen die Ziehform B1 Finger s rundlichen Querschnitts vortreten (Fig. ι und 2). Die Guttapercha wird in formfähigem Zustand in den den Hohldorn A1 umfassenden Hohlraum eingeführt. Der durch den Hohldorn und die Form geführte Leitungsdraht C1 kann aus einem einzelnen oder mehreren Drähten oder aus einem Rohr bestehen, das einen oder zwei durch eine Scheidewand von einander getrennte Drähte enthält.The device consists of a hollow mandrel A \ of which protrudes against the drawing die B 1 finger s round cross-section (Fig. 1 and 2). The gutta-percha is inserted into the hollow space comprising the hollow mandrel A 1 in a malleable state. The lead wire C 1 guided through the hollow mandrel and the mold can consist of a single wire or a plurality of wires or of a tube which contains one or two wires separated from one another by a partition.
Um schraubenförmig gewundene Stützrippen in der zu bildenden Umhüllung zu erhalten, versetzt man den Hohldorn A1 (oder Dorn und Form) mittelst des Getriebes .Fin Drehung, während man die Guttapercha einem starken Druck unterwirft. In der in der Form vorgetriebenen Umhüllung D1 aus Guttapercha werden dann mittelst der Finger s, Fig. 1 und 2, schraubenförmig gewundene Kanäle s1, Fig. 3, gebildet, so dafs drei gewundene Stützrippen s2 für den Draht C entstehen;In order to obtain helically wound support ribs in the casing to be formed, the hollow mandrel A 1 (or mandrel and form) is moved by means of the gear. Fin rotation while the gutta-percha is subjected to strong pressure. In the sheath D 1 of gutta-percha that is driven forward in the form , helically wound channels s 1 , FIG. 3, are then formed by means of the fingers s, FIGS. 1 and 2, so that three wound support ribs s 2 for the wire C are formed;
Das Kabel gelangt aus der Form (Fig. 1) durch eine andere und wird darin mit einer neuen Umhüllung aus Guttapercha, Blei oder anderem Stoff versehen. Ein drehbarer Dorn ist nur für die erste Umhüllung und nur dann nöthig, wenn weniger als drei Stützrippen in der Umhüllung vorhanden sind. Zweckmäfsig stellt man nur eine einzige schraubenförmig gewundene Rippe her, wodurch man ein Kabel mit sehr geringer statischer Capacität erhält. Statt der drei Finger s, Fig. 1 und 2, tritt für diesen Fall eine Art Kragen am Hohldorn A1 vor, der einen Schlitz für die zu bildende eine gewundene Rippe s·2 besitzt.The cable passes out of the mold (Fig. 1) through another and is provided with a new covering made of gutta-percha, lead or other material. A rotatable mandrel is only necessary for the first envelope and only if there are fewer than three support ribs in the envelope. It is expedient to produce only a single helically wound rib, as a result of which a cable with very low static capacitance is obtained. In this case, instead of the three fingers s, FIGS. 1 and 2, a kind of collar occurs on the hollow mandrel A 1 , which has a slot for the twisted rib s · 2 to be formed .
Wenn, wie in Fig. 3 dargestellt, das Kabel von mindestens drei Stützrippen berührt wird, so kann der Dorn A1 fest gelagert sein. Die Rippen s2 werden dann gerade und vermögen den Leitungsdraht C1 ebenfalls derart zu stützen, dafs das Kabel nur eine ganz geringe statische Capacität erhält.If, as shown in FIG. 3, the cable is touched by at least three support ribs, the mandrel A 1 can be fixedly mounted. The ribs s 2 then become straight and are also able to support the conductor wire C 1 in such a way that the cable has only a very low static capacity.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE70702C true DE70702C (en) | 1900-01-01 |
Family
ID=344062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT70702D Expired DE70702C (en) | Device for sheathing wire or cables with formable insulating material |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE70702C (en) |
-
0
- DE DENDAT70702D patent/DE70702C/en not_active Expired
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