DE642977C - Device for the production of electrical tubular heating elements by introducing grainy insulating material into a jacket tube - Google Patents
Device for the production of electrical tubular heating elements by introducing grainy insulating material into a jacket tubeInfo
- Publication number
- DE642977C DE642977C DES118857D DES0118857D DE642977C DE 642977 C DE642977 C DE 642977C DE S118857 D DES118857 D DE S118857D DE S0118857 D DES0118857 D DE S0118857D DE 642977 C DE642977 C DE 642977C
- Authority
- DE
- Germany
- Prior art keywords
- heating elements
- insulating material
- jacket tube
- introducing
- tubular heating
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/16—Rigid-tube cables
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Heating (AREA)
- Hydraulic Motors (AREA)
- Braking Arrangements (AREA)
- Vibration Prevention Devices (AREA)
- Thermal Insulation (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Catching Or Destruction (AREA)
Description
Einrichtung zum Herstellen elektrischer Rohrheizkörper durch Einbringen körniger Isoliermasse in ein Mantelrohr Bei der Einrichtung nach dem Hauptpatent wird ein Mantelrohr, innerhalb dessen ein Heizleiter ausgespannt ist, durch einen Stopfvorgang mit feinkörniger isolierender Masse gefüllt, indem ein mittels eines von einem Motor angetriebenen Nockens oder Exzenters betätigtes Stopfrohr die dem Mantelrohr in der Zeiteinheit in kleinen Mengen zugeführte Masse festpreßt. Wesentlich ist hierbei, daß das Mantelrohr ganz unabhängig von der Menge der zugeführten Einbettmasse dem rasch auf und ab schwingenden Stopfrohr mit immer gleichmäßigem Druck entgegengehalten wird. Dem Mantelrohr kann dabei durch ein besonderes Gewicht eine zusätzliche Masse gegeben werden, so daß beim Stopfen der Isoliermasse eine Amboßwirkung entsteht.Device for producing electric tubular heating elements by introducing them granular insulating compound in a jacket pipe When setting up according to the main patent a jacket pipe, inside which a heating conductor is stretched, through a The stuffing process is filled with a fine-grained insulating compound by means of a Stuffing tube actuated by a motor-driven cam or eccentric die Jacket pipe firmly presses mass supplied in small amounts in the unit of time. Essential is here that the jacket tube is completely independent of the amount of investment material supplied held up against the stuffing pipe, which swings rapidly up and down, with constant pressure will. The jacket pipe can have an additional mass due to its special weight are given so that an anvil effect occurs when the insulating compound is plugged.
1; m die Störungen, die durch Eigenschwingungen der mechanischen Übertragungsglieder während des Arbeitens der Stopfmaschine hervorgerufen werden, zu beseitigen, hat man vorgeschlagen, die Gewichtsbelastung auf hydraulischem Wege auf das Mantelrohr zu übertragen, und hat dabei die Eigenschwingungszahl der hydraulischen übertragungsmittel so gewählt, daß sie unter der Schwingungszahl des Stopfrohres liegt.1; m the disturbances caused by natural vibrations of the mechanical transmission links caused during the operation of the tamping machine must be eliminated it was proposed that the weight load be hydraulically applied to the jacket pipe to be transmitted, and has the natural frequency of the hydraulic transmission means chosen so that it is below the number of vibrations of the stuffing tube.
Gegenstand der Erfindung ist eine Verbesserung einer derartigen Druckübertragung. Die Erfindung besteht in :einer Einrichtung zum Herstellen elektrischer Rohrheizkörper, bei der zur Übertragung des konstanten Gegendruckes auf das Stopfrohr Preßluft dient, die mittels eines Kolbens auf das Mantelrohr einwirkt. An Stelle von Preßluft kann natürlich auch Preßgas oder Dampf verwendet werden.The invention relates to an improvement in such a pressure transmission. The invention consists in: a device for producing electrical tubular heating elements, in which compressed air is used to transmit the constant back pressure to the stuffing pipe, which acts on the jacket tube by means of a piston. Instead of compressed air can of course, compressed gas or steam can also be used.
Die Verwendung von Druckluft als Druckübertragungsmittel hat den Vorteil, daß die Druckübertragung ohne Verwendung physikalischer Massen, wie druckerzeugender Gewichte (Gegengewichte) und druckübertragender Massen, z. B. druckübertragender Flüssigkeit (öl), erfolgt. Gegenüber der nahezu starren hydraulischen Übertragung hat die Druckübertragung durch Druckluft den Vorteil, daß wegen der hohen Kompressibilität der Luft störende Schwingungen des den Gegendruck auf das Stopfrohr ausübenden Kolbens nicht entstehen können. Ferner hat die Verwendung von -Druckluft den Vorteil, daß der durch Druck und Drehzahl gegebene Arbeitsbereich vergrößert und damit zugleich die Güte des Enderzeugnisses erhöht wird.The use of compressed air as a pressure transmission medium has the advantage of that the pressure transmission without the use of physical masses, such as pressure generating Weights (counterweights) and pressure-transmitting masses, e.g. B. pressure transmitting Liquid (oil). Compared to the almost rigid hydraulic transmission the pressure transmission by compressed air has the advantage that because of the high compressibility the air disturbing vibrations of the piston exerting the counterpressure on the stuffing tube cannot arise. Furthermore, the use of compressed air has the advantage that the working range given by pressure and speed is enlarged and thus at the same time the quality of the end product is increased.
In der Abbildung ist die Einrichtung dar-., gestellt.The illustration shows the device.
In dem Mantelrohr 1 5 ist der Heizdraht i ,.-ausgespannt. Das Stopfrohr 16 wird mittels der vom Elektromotor 43 angetriebenen Kurbelschleife 26 in auf und ab schwingende Bewegung versetzt und stopft mittels des Riffelkopfes 28 die isolierende Masse 19 fest. Das ?Mantelrohr mit dem VerSChlüßStüCk 21 ist am Kolben 4i befestigt, der im Druckluftzylinder 7 angeordn t. Dieser Zylinder ist durch 3 3 et is die Rohrleitung 4o an einen nicht dargestellten Druckluftbehälter oder -erzeuger angeschlossen.In the jacket tube 1 5, the heating wire i, .- is stretched out. The stuffing tube 16 is set in an up and down swinging motion by means of the slider crank 26 driven by the electric motor 43 and tightly stuffs the insulating mass 19 by means of the corrugated head 28. The jacket tube with the connecting piece 21 is attached to the piston 4i, which is arranged in the compressed air cylinder 7. This cylinder is connected by 3 3 et is the pipe 4o to a compressed air tank or generator, not shown.
Wird das Stopfrohr in schwingende Bewegung versetzt, so wird der Kolben 41 und damit das Mantelrohr 15 dem Stopfrohr mit stets gleichmäßigem Druck entgegengehalten und damit die in kleinen Mengen dem Mantelrohr zugeführte Isoliermasse gleichmäßig verdichtet.If the stuffing tube is set in oscillating motion, the piston becomes 41 and thus the jacket pipe 15 held against the stuffing pipe with constant pressure and thus the insulating compound fed to the jacket pipe in small quantities evenly condensed.
Je nach den Verhältnissen der Stopfmaschine kann es zweckmäßig sein, das Gewicht des Trägers des Mantelrohres durch ein zusätzliches Gewicht =; zu erhöhen. Dadurch wird erreicht, daß dem Mantelrohr bzw. seinem Träger eine im physikalischen Sinn größere Masse erteilt wird, so daß eine ytesentlich stärkere Pressung auf die ausgeübt werden kann.Depending on the conditions of the tamping machine, it may be useful to the weight of the support of the jacket pipe by an additional weight =; to increase. It is thereby achieved that the jacket tube or its carrier has a physical Meaning greater mass is granted, so that a much stronger pressure on the can be exercised.
@.'. Man kamt durch Anwendung großer Druckluftbehälter oder durch gewollte Undichtigkeiten beispielsweise am Druckzylinder 37 erreichen, daß bei der Abwärtsbewegung des Kolbens 41, die dem Fortschreiten des Arbeitsvorganges entspricht, keine Steigerung des Druckes der Druckluft eintritt.@. '. One you came achieve that in the downward movement of the piston 41 which corresponds to the progress of the operation, no increase in pressure of the compressed air entering through the use of large compressed air tank or by intentional leaks, for example, on the printing cylinder 37th
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES118857D DE642977C (en) | 1933-11-15 | 1935-06-30 | Device for the production of electrical tubular heating elements by introducing grainy insulating material into a jacket tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES111735D DE636889C (en) | 1933-11-15 | 1933-11-15 | Device for the production of electrical tubular heating elements |
DES118857D DE642977C (en) | 1933-11-15 | 1935-06-30 | Device for the production of electrical tubular heating elements by introducing grainy insulating material into a jacket tube |
Publications (1)
Publication Number | Publication Date |
---|---|
DE642977C true DE642977C (en) | 1937-03-20 |
Family
ID=29264644
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES118923D Expired DE660768C (en) | 1933-11-15 | Device for the production of electrical tubular heating elements | |
DES111735D Expired DE636889C (en) | 1933-11-15 | 1933-11-15 | Device for the production of electrical tubular heating elements |
DES118857D Expired DE642977C (en) | 1933-11-15 | 1935-06-30 | Device for the production of electrical tubular heating elements by introducing grainy insulating material into a jacket tube |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES118923D Expired DE660768C (en) | 1933-11-15 | Device for the production of electrical tubular heating elements | |
DES111735D Expired DE636889C (en) | 1933-11-15 | 1933-11-15 | Device for the production of electrical tubular heating elements |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT148756B (en) |
DE (3) | DE636889C (en) |
FR (2) | FR781529A (en) |
GB (2) | GB446588A (en) |
NL (2) | NL39886C (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB669779A (en) * | 1949-08-05 | 1952-04-09 | Pyrotenax Ltd | Improvements in or relating to electric cables or other insulated electric conductors |
US2743858A (en) * | 1949-08-09 | 1956-05-01 | clothier | |
GB669781A (en) * | 1949-08-19 | 1952-04-09 | Pyrotenax Ltd | Improvements in or relating to electric cables or other insulated electric conductors |
US2867955A (en) * | 1955-06-07 | 1959-01-13 | Wiegand Co Edwin L | Filling apparatus |
GB8717668D0 (en) * | 1987-07-25 | 1987-09-03 | Micropore International Ltd | Coiled heating elements |
-
0
- DE DES118923D patent/DE660768C/en not_active Expired
-
1933
- 1933-11-15 DE DES111735D patent/DE636889C/en not_active Expired
-
1934
- 1934-11-13 NL NL71403A patent/NL39886C/xx active
- 1934-11-13 FR FR781529D patent/FR781529A/en not_active Expired
- 1934-11-14 AT AT148756D patent/AT148756B/en active
- 1934-11-15 GB GB32858/34A patent/GB446588A/en not_active Expired
-
1935
- 1935-06-30 DE DES118857D patent/DE642977C/en not_active Expired
-
1936
- 1936-06-26 GB GB17868/36A patent/GB456323A/en not_active Expired
- 1936-06-27 FR FR47490D patent/FR47490E/en not_active Expired
- 1936-06-29 NL NL78338A patent/NL43214C/xx active
Also Published As
Publication number | Publication date |
---|---|
DE636889C (en) | 1936-10-16 |
DE660768C (en) | 1938-06-02 |
FR47490E (en) | 1937-05-25 |
GB446588A (en) | 1936-05-04 |
FR781529A (en) | 1935-05-17 |
NL39886C (en) | 1937-01-15 |
AT148756B (en) | 1937-03-10 |
GB456323A (en) | 1936-11-06 |
NL43214C (en) | 1938-05-16 |
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