CH390766A - Device for the continuous production of gunpowder and propellants - Google Patents
Device for the continuous production of gunpowder and propellantsInfo
- Publication number
- CH390766A CH390766A CH6551958A CH6551958A CH390766A CH 390766 A CH390766 A CH 390766A CH 6551958 A CH6551958 A CH 6551958A CH 6551958 A CH6551958 A CH 6551958A CH 390766 A CH390766 A CH 390766A
- Authority
- CH
- Switzerland
- Prior art keywords
- screw
- nozzle
- gunpowder
- powder
- continuous production
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
- C06B21/0075—Shaping the mixture by extrusion
-
- 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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Nozzles (AREA)
Description
<B>Zusatzpatent zum Hauptpatent</B> Nr.<B>372 581</B> Vorrichtung zur kontinuierlichen Herstellung von Schiesspulvern und Treibsätzen Im Hauptpatent Nr. 372581 ist ein Verfahren und eine Vorrichtung zur kontinuierlichen Herstel lung von Schiesspulvern und Treibsätzen beschrie ben, bei dem in einer kombinierten Schneckenpres- sen-Vorrichtung, die vollkommen abgeschlossen ist, Pulvermassen aus der Formgebungsschnecke aus treten und anschliessend hinter dem Mundstück die ser Formgebungsschnecke mittels einer Schneide vorrichtung das gepresste Pulver in die für den spe ziellen Zweck gewünschte Form gebracht wird.
Die Grösse des zu pressenden Pulverstranges ist dabei massgeblich bestimmt durch den Durchmesser der Schneckenspindel der Formgebungsschnecke. Wird als Formgebungsschnecke eine Doppelschnecken presse verwendet, bei der der Spindeldurchmesser z. B. 70 mm beträgt, so wird ein Pulverstrang erbal- ten, der nur 50 mm Durchmesser besitzt.
Um mit einer solchen Vorrichtung ohne Vergrös- serung der Dimensionen der Spindelschnecke auch Pulverstränge grösseren Durchmessers pressen zu können, wird in weiterer Ausbildung der Erfindung vorgeschlagen, an das austrittsseitige Ende der Form gebungsschnecke eine Düse anzusetzen, welche Düse zwischen dem Mundstück der Formgebungsschnecke und der Schneidevorrichtung angeordnet ist und de ren lichter Querschnitt grösser ist als der Austritts querschnitt der Formgebungsschnecke und die mit einer abnehmbaren Bremsplatte mit Radialschlitzen abgeschlossen ist.
Diese Schlitze lassen die den Pul verstrang umgebende Luft beim Anfüllen der Düse entweichen, wobei man noch kurze Zeit auch Pulver massen austreten lässt. Hierdurch bleibt die Pulver masse im Fliessen, und man erhält einen form gerechten und lunkerfreien Pulverkörper. Bei konti nuierlicher Verarbeitung und Herstellung lunker- freier Pulverkörper wird die Bremsplatte abgenom men und somit ein der grösseren Düsenöffnung ent sprechender lunkerfreier Strang weiter ausgepresst, da die Wandreibung den nötigen Widerstand zur Füllung der Düse bewirkt. Auf diese Art lassen sich beispielsweise mit einer 70 mm Spindelschnecke Pul verstränge bis zu 100 mm und mehr herstellen.
Die Länge der Düse kann bis zum Mehrviel fachen ihrer Querschnittabmessungen betragen.
Fig. 1 zeigt eine Ausführung der erfindungs- gemässen Vorrichtung. Von der Formgebungs- schnecke 1 gelangt die Pulvermasse in die erwei terte und verlängerte Düse 2. Diese Düse ist zwi schen dem Mundstück der Formgebungsschnecke und der Schneidevorrichtung angeordnet. Zur Behei- zung dieser Düse 2 ist diese mit einem Heisswasser- mantel 3 versehen. Am Düsenaustritt befindet sich die Bremsplatte 4 mit Nuten.
Fig. 2 zeigt die Bremsplatte 4 im Schnitt.
<B> Additional patent to the main patent </B> No. <B> 372 581 </B> Device for the continuous production of gunpowder and propellants In the main patent no. 372581 a method and a device for the continuous production of gunpowder and propellants is described , in which in a combined screw press device, which is completely closed, powder masses emerge from the shaping screw and then behind the mouthpiece of this shaping screw the pressed powder is brought into the shape required for the special purpose by means of a cutting device.
The size of the powder strand to be pressed is largely determined by the diameter of the screw spindle of the shaping screw. If a twin screw press is used as the shaping screw, in which the spindle diameter z. If, for example, it is 70 mm, a strand of powder is obtained which is only 50 mm in diameter.
In order to be able to press powder strands of larger diameter with such a device without increasing the dimensions of the screw screw, it is proposed in a further embodiment of the invention to attach a nozzle to the outlet end of the forming screw, which nozzle is between the mouthpiece of the forming screw and the cutting device is arranged and de Ren clear cross section is larger than the exit cross section of the shaping screw and which is completed with a removable brake plate with radial slots.
These slots allow the air surrounding the powder strand to escape when the nozzle is being filled, and powder masses can also escape for a short time. As a result, the powder remains flowing, and a powder body that is true to shape and free of voids is obtained. With continuous processing and manufacture of void-free powder bodies, the brake plate is removed and a void-free strand corresponding to the larger nozzle opening is pressed out further, since the wall friction creates the necessary resistance for filling the nozzle. In this way, powder strands of up to 100 mm and more can be produced with a 70 mm spindle screw, for example.
The length of the nozzle can be up to Mehrviel times its cross-sectional dimensions.
1 shows an embodiment of the device according to the invention. From the shaping screw 1, the powder mass passes into the expanded and lengthened nozzle 2. This nozzle is arranged between the mouthpiece of the shaping screw and the cutting device. To heat this nozzle 2, it is provided with a hot water jacket 3. The brake plate 4 with grooves is located at the nozzle outlet.
Fig. 2 shows the brake plate 4 in section.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED26179A DE1048212B (en) | 1957-08-09 | 1957-08-09 | Device for the continuous production of gunpowder and propellants |
DED27754A DE1060761B (en) | 1957-08-09 | 1958-03-28 | Device for the continuous production of gunpowder and propellants |
Publications (1)
Publication Number | Publication Date |
---|---|
CH390766A true CH390766A (en) | 1965-04-15 |
Family
ID=25970817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH6551958A CH390766A (en) | 1957-08-09 | 1958-10-28 | Device for the continuous production of gunpowder and propellants |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT224522B (en) |
CH (1) | CH390766A (en) |
DE (1) | DE1060761B (en) |
FR (1) | FR74394E (en) |
-
1958
- 1958-03-28 DE DED27754A patent/DE1060761B/en active Pending
- 1958-10-21 AT AT733758A patent/AT224522B/en active
- 1958-10-28 CH CH6551958A patent/CH390766A/en unknown
- 1958-11-13 FR FR779034A patent/FR74394E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR74394E (en) | 1960-11-07 |
DE1060761B (en) | 1959-07-02 |
AT224522B (en) | 1962-11-26 |
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