EP0087584A2 - Dispositif pour la fabrication des corps moulés sous pression - Google Patents

Dispositif pour la fabrication des corps moulés sous pression Download PDF

Info

Publication number
EP0087584A2
EP0087584A2 EP83100736A EP83100736A EP0087584A2 EP 0087584 A2 EP0087584 A2 EP 0087584A2 EP 83100736 A EP83100736 A EP 83100736A EP 83100736 A EP83100736 A EP 83100736A EP 0087584 A2 EP0087584 A2 EP 0087584A2
Authority
EP
European Patent Office
Prior art keywords
upper punch
outlet opening
sleeve
valve flap
pressing process
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.)
Granted
Application number
EP83100736A
Other languages
German (de)
English (en)
Other versions
EP0087584A3 (en
EP0087584B1 (fr
Inventor
Benjamin Furch
Friedrich-Wilhelm Rost
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheinmetall GmbH filed Critical Rheinmetall GmbH
Publication of EP0087584A2 publication Critical patent/EP0087584A2/fr
Publication of EP0087584A3 publication Critical patent/EP0087584A3/de
Application granted granted Critical
Publication of EP0087584B1 publication Critical patent/EP0087584B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
    • B30B15/0017—Deairing means
    • 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
    • C06B21/0041—Shaping the mixture by compression
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/812—Venting

Definitions

  • the invention relates to a device for the production of compacts, in particular compacts consisting of explosives, according to the preamble of patent claim 1.
  • Radial bores of the type described above are particularly not applicable even if the material to be pressed is to be processed warm and the material to be heated is spread in a widespread manner, for example by a heating liquid surrounding the die or the press pot.
  • the invention has for its object to provide a device for the production of compacts, in particular compacts consisting of explosives, which are characterized by a characterized by inexpensive construction and which allows the production of non-porous compacts while maintaining safe conditions.
  • Fig. 1 shows a schematic representation of the essential for the invention parts of the above-mentioned device, which cooperate during the pressing process. Shown is an upper punch 10 which can be moved up and down in the direction of the double arrow 18 and, during its downward movement, is immersed in a stationary die (press pot) 14 which contains the material to be pressed 15. The remaining parts of the device, in particular the means for holding the die 14 and the upper punch 10 and the means for moving it, are not shown in FIG. 1, since they are irrelevant for the explanation of the invention.
  • the upper punch 10 comprises at least one gas outlet opening which at least temporarily connects the pressing volume 16 to the surroundings even after the upper punch 10 has been immersed in the die 14, and which Displacement of the gas components can be closed automatically by shut-off means.
  • the gas outlet opening consists of a central axial bore 20, 20 'penetrating the upper punch 10, which is arranged with a central part 12 of the first punch 10 in essentially radially extending connecting channel 21 is connected.
  • the inner wall 25 of this pot-shaped sleeve 11 comprises a stair-shaped peripheral seat 25 which lies in a plane perpendicular to the longitudinal axis of the upper punch 10. This seat 25 serves as a stop for the thread 23 of the part 12.
  • the seat 25 delimits a partial volume 26 of the sleeve 11 upwards, in which shut-off means for closing the bore 20 are arranged.
  • shut-off means consist of a valve flap 40 (FIG. 4) which rests on the bottom of the sleeve 11 in the idle state and which in the partial volume 26 of the sleeve 11 which is limited by the seat 25 in the axial direction up to the stop on the end face of the upper punch part 12 is free to move.
  • the valve flap 40 consists of a hub 41, which, for centering purposes, has projections 42 which are evenly spaced around the circumference and extend in the radial direction.
  • FIGS. 5 and 6 show a side view of the valve flap 40 with viewing direction B according to FIG. 4.
  • FIG. 6 is a sectional view through the valve flap 40 along the line 6 - 6 from FIG. 4 Fig. Provides a view from viewing direction A acc. Fig. 2 on the top of the middle part 12 of the upper punch 10 and is understandable in itself without further explanation.
  • the valve flap 40 is expediently made of a plastic, for example Makrolon.
  • the operation of the device according to the invention is as follows. After filling the pressed material 15 into the die 14, the upper punch 10 moves into the pressing volume 16 and begins to displace the gas components contained in the pressing volume 16 through the bore 20) 20 and the connecting channel 21 to the outside. At this time, the valve flap% 0 rests on the bottom of the sleeve 11. As soon as the upper punch 10 comes into contact with the pressed material 15 during further lowering, a small proportion of the pressed material 15 enters the inside of the sleeve 11 through the bore 20 'which penetrates the bottom 17 of the cup-shaped sleeve 11 and thereby lifts the valve flap 40 from the bottom the sleeve 11 from.
  • valve flap 40 is then pressed against the bore 20 opening in the central part 12 of the upper punch 10 and closes it.
  • the gas outlet opening which initially exists via the bore 20 and the connecting channel 21 is closed and prevents material to be pressed from entering the bore 20 arranged in the central part 12 of the upper punch 10.
  • the upper piston 10 After the pressing process has ended, the upper piston 10 returns in the upward direction of the double arrow 18 (FIG. 1), only the uppermost part 13 of the upper piston 10 taking part in this movement.
  • the interconnected parts 11 and 12 of the upper piston 10 may remain in the die 14 until the material to be cooled has cooled down and can be removed together with the latter until the pressed part is removed from the device.
  • the small amount of pressed material that has entered the sleeve 11 can be removed in a simple manner by a suitable solvent, for example warm water; the sleeve 11 can then be used for a new pressing process.
  • a suitable solvent for example warm water
  • the parts identified by reference numerals 11, 12 and 13 can also be designed to be retractable together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Forging (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Pens And Brushes (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Powder Metallurgy (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP83100736A 1982-02-27 1983-01-27 Dispositif pour la fabrication des corps moulés sous pression Expired EP0087584B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3207191 1982-02-27
DE19823207191 DE3207191A1 (de) 1982-02-27 1982-02-27 Vorrichtung zur herstellung von presskoerpern

Publications (3)

Publication Number Publication Date
EP0087584A2 true EP0087584A2 (fr) 1983-09-07
EP0087584A3 EP0087584A3 (en) 1985-04-24
EP0087584B1 EP0087584B1 (fr) 1987-01-07

Family

ID=6156934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100736A Expired EP0087584B1 (fr) 1982-02-27 1983-01-27 Dispositif pour la fabrication des corps moulés sous pression

Country Status (4)

Country Link
US (1) US4545755A (fr)
EP (1) EP0087584B1 (fr)
DE (2) DE3207191A1 (fr)
NO (1) NO155651C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE460460B (sv) * 1983-07-01 1989-10-16 Convey Teknik Ab Foerfarande och anordning foer reglerad pressning av pulvermaterial
JPH0636076B2 (ja) * 1985-04-12 1994-05-11 株式会社日立製作所 放射性廃棄物の造粒装置
DE3523930A1 (de) * 1985-07-04 1987-01-08 Dynamit Nobel Ag Schutzverfahren beim umhuellen von temperatur- bzw. druckempfindlichen stoffen
US5549769A (en) * 1989-03-20 1996-08-27 Breed Automotive Technology, Inc. High temperature stable, low imput energy primer/detonator
DE102012104202A1 (de) * 2012-05-15 2013-11-21 CONAPRO GmbH Vorrichtung zur Herstellung von Betonprodukten

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE174347C (fr) *
US1826945A (en) * 1928-02-06 1931-10-13 American Container Corp Molding apparatus
DE556298C (de) * 1931-02-25 1932-08-06 Becker & Van Huellen Hydraulische Presse
GB508598A (en) * 1938-02-18 1939-07-04 Horace Harrison Macey Improved press for moulding powdered material
US2607435A (en) * 1949-08-08 1952-08-19 Dohse Hans Apparatus for increasing the bulk density of pulverulent materials
US2865052A (en) * 1955-10-04 1958-12-23 Hooker Chemical Corp Vented mold for plastic materials
US3377662A (en) * 1965-04-20 1968-04-16 Bridgestone Tire Co Ltd Metal mold having vent plug means for shaping a plastic article and vulcanizing a rubber article
US3822857A (en) * 1971-02-16 1974-07-09 Toyo Tire & Rubber Co Synthetic resin plug for vent hole of mould

Also Published As

Publication number Publication date
DE3368918D1 (en) 1987-02-12
NO155651B (no) 1987-01-26
US4545755A (en) 1985-10-08
DE3207191A1 (de) 1983-09-08
NO830605L (no) 1983-08-29
EP0087584A3 (en) 1985-04-24
EP0087584B1 (fr) 1987-01-07
NO155651C (no) 1987-05-06

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