DE197678C - - Google Patents
Info
- Publication number
- DE197678C DE197678C DENDAT197678D DE197678DA DE197678C DE 197678 C DE197678 C DE 197678C DE NDAT197678 D DENDAT197678 D DE NDAT197678D DE 197678D A DE197678D A DE 197678DA DE 197678 C DE197678 C DE 197678C
- Authority
- DE
- Germany
- Prior art keywords
- mandrel
- plastic mass
- mouthpiece
- pressed
- bearing
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 238000007906 compression Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000717 retained Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B11/0854—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads for making screw-threads or the like in the surface of the shaped article
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- JVi 197678 — KLASSE 80«. GRUPPE- JVi 197678 - CLASS 80 «. GROUP
Die Erfindung bezweckt die Massenherstellung eines bisher noch unbekannten Erzeugnisses, nämlich hohler Stränge mit Innengewinde. Dies geschieht in der Weise, daß eine plastische Masse durch ein Mundstück gepreßt wird, welches mit einem lose drehbaren, Außengewinde tragenden Dorn versehen ist.The invention aims at the mass production of a hitherto unknown product, namely hollow strands with internal threads. This is done in such a way that a plastic mass through a mouthpiece is pressed, which is provided with a loosely rotatable, external thread-bearing mandrel is.
In der Zeichnung ist beispielsweise eineFor example, in the drawing is a
ίο Ausführungsform des bei Ausübung dieses Verfahrens anzuwendenden Mundstückes im Längsschnitt dargestellt.ίο embodiment of when exercising this Procedure to be used mouthpiece shown in longitudinal section.
An einen ringförmigen Vorsprung des Preßrohres α lehnt sich der mit einem entsprechenden Bund versehene Mantel b des Mundstückes an, gegen welchen sich in bekannter Weise ein Kreuzstück c stützt, das eine zentrisch ausgebohrte Nabe trägt. Gegen einen Absatz dieser Ausbohruug legt sich ein Dorn d mit dem an seinem hinteren Ende angebrachten Kopfe e. Hinter dem Bund ist die Nabenhöhlung durch eine Schraube / mit einem die plastische Masse zerteilenden Spitzkopf abgedeckt. Der Dorn d führt sich in an sich bekannter Weise lose in der Nabe c; er ist auf seinem bis zum vorderen Ende des Mantels b reichenden Stück mit einem sehr steilen, in der Regel vielgängigen Gewinde g versehen. The jacket b of the mouthpiece, which is provided with a corresponding collar, leans against an annular projection of the compression tube α , against which a crosspiece c is supported in a known manner and carries a centrally drilled hub. Against a shoulder of this Ausbohruug lies a mandrel d with the head e attached to its rear end. Behind the collar, the hub cavity is covered by a screw / with a pointed head that divides the plastic mass. The mandrel d is loosely guided in a manner known per se in the hub c; it is provided with a very steep, usually multi-start thread g on its piece extending to the front end of the jacket b .
Wird plastische Masse durch das Rohr a gepreßt, so gelangt sie durch die Lücken zwischen den Armen des Kreuzstückes c in das eigentliche Mundstück b und umgibt dort den vorstehenden gewindeartigen Teil des Domes d. Entsprechend dem Fortschreiten des Preßstranges wird der Dorn in langsame Drehung versetzt, während die plastische Masse sich in die Gewindegänge einpreßt, so daß das erzeugte Hohlgewinde im fertigen Strang erhalten bleibt.If plastic material is pressed through the tube a , it passes through the gaps between the arms of the crosspiece c into the actual mouthpiece b and there surrounds the protruding thread-like part of the dome d. As the extruded strand progresses, the mandrel is set in slow rotation while the plastic mass is pressed into the threads, so that the hollow thread produced is retained in the finished strand.
An der Außenfläche braucht der erzeugte Strang nicht notwendig gleichbleibenden runden Querschnitt zu haben; vielmehr können durch entsprechende Gestaltung des inneren Endes des Mantels b auch Stränge mit geradlinigen oder schraubenförmigen Längsprofilierungen erzeugt werden, überhaupt Stränge von jeder Form, welche sich fortlaufend pressen läßt.The strand produced need not necessarily have a constant round cross-section on the outer surface; Rather, by appropriately designing the inner end of the jacket b , strands with straight or helical longitudinal profiles can be produced, strands of any shape that can be continuously pressed.
Die dem Verfahren zu unterwerfende Masse braucht nicht notwendig im gewöhnlichen Zustande plastisch zu sein; vielmehr können auch erst bei sehr hohem Druck plastisch werdende Metalle dem Verfahren unterworfen werden.The mass to be subjected to the procedure need not necessarily be in the ordinary Condition to be plastic; rather, they can only become plastic at very high pressure metals to be subjected to the process.
Claims (2)
Publications (1)
Publication Number | Publication Date |
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DE197678C true DE197678C (en) |
Family
ID=460545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT197678D Active DE197678C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE197678C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0291682A1 (en) * | 1987-05-21 | 1988-11-23 | American Cyanamid Company | Method for making an extrusion die for forming helically wound extrudate particles |
DE102007004150A1 (en) | 2007-01-22 | 2008-07-24 | Bühler AG | Plansichter |
EP4032626A1 (en) | 2021-01-21 | 2022-07-27 | Bühler AG | Drive for plan sifter or comparable sorting machine |
-
0
- DE DENDAT197678D patent/DE197678C/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0291682A1 (en) * | 1987-05-21 | 1988-11-23 | American Cyanamid Company | Method for making an extrusion die for forming helically wound extrudate particles |
DE102007004150A1 (en) | 2007-01-22 | 2008-07-24 | Bühler AG | Plansichter |
EP4032626A1 (en) | 2021-01-21 | 2022-07-27 | Bühler AG | Drive for plan sifter or comparable sorting machine |
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