EP0162010B1 - Magasin pour munition sans étui - Google Patents

Magasin pour munition sans étui Download PDF

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Publication number
EP0162010B1
EP0162010B1 EP85810174A EP85810174A EP0162010B1 EP 0162010 B1 EP0162010 B1 EP 0162010B1 EP 85810174 A EP85810174 A EP 85810174A EP 85810174 A EP85810174 A EP 85810174A EP 0162010 B1 EP0162010 B1 EP 0162010B1
Authority
EP
European Patent Office
Prior art keywords
magazine
annular bead
explosive
outflow
tablets
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
Application number
EP85810174A
Other languages
German (de)
English (en)
Other versions
EP0162010A1 (fr
Inventor
Peter Jochum
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to AT85810174T priority Critical patent/ATE28816T1/de
Publication of EP0162010A1 publication Critical patent/EP0162010A1/fr
Application granted granted Critical
Publication of EP0162010B1 publication Critical patent/EP0162010B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/16—Cartridges specially adapted for impact tools; Cartridge and bolts units
    • B25C1/166—Pellets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/08—Cartridge belts
    • F42B39/085—Cartridge belts for blank cartridges

Definitions

  • the invention relates to a magazine for caseless propellant charges for use in powder-operated setting tools, with a plate or strip-shaped magazine body, the magazine body having passage openings which are surrounded by an annular bead forming a receptacle for the propellant charges and the outer contour of the annular bead at least partially away from the magazine body rejuvenated.
  • Caseless propellant charges have considerable advantages over the cartridges that are still common today. These advantages mainly consist in the much simpler manufacture and the resulting lower manufacturing costs. These advantages apply in particular to propellant charges without ignition charges.
  • Magazines consisting of a strip-shaped magazine body with receptacles for the propellant charges.
  • the recordings are formed by an annular bead that tapers away from the magazine body.
  • the ring bead mainly takes over the sealing of the magazine against the closure parts on the device side.
  • axial discharge channels for the combustion gases are also required for the propellant charges arranged in such magazines, the disadvantages mentioned again occur.
  • An increase in the cross section of the axial outflow channels is not possible, since the propellant charges have to be supported in the axial direction for the reasons described.
  • the invention has for its object to provide a magazine for caseless propellant charges for use in powder-operated setting tools, which ensures simple and safe ignition and even burning of the propellant charges.
  • the annular bead has at least one outflow opening for the combustion gases that can be made to coincide with an outflow channel on the device side.
  • the combustion gases do not flow away from the combustion chamber in the axial but in the radial direction.
  • the cross-section available for the outflow channels over the circumference and the outflow openings in the magazine which can be brought into register with the outflow channels can thus be kept considerably larger than in the case of an axial course, without impairing the insulation.
  • the propellant charge should be supported on all sides by device or magazine parts.
  • the outflow opening it is expedient to design the outflow opening as a hole passing through the annular bead.
  • the cross-sectional shape of the hole can be round, angular or a slot.
  • the hole should be offset in the axial direction with respect to the propellant charge, so that it is at most partially covered by the propellant charge.
  • grooves extending from the free end of the ring bead are also conceivable. This form of outflow openings is particularly suitable when the propellant charge, in powdery or still moist state, is finished pressed in the magazine itself in a manner known per se.
  • the outflow openings can be provided with a membrane which can be destroyed by the pressure of the combustion gases. This membrane is only destroyed when the combustion pressure in the combustion chamber has reached a minimum value. Due to a membrane temporarily closing the outflow opening, the propellant charges in the magazine are also better protected against external influences, such as moisture or mechanical damage.
  • the energy contained in a propellant charge can be used as fully as possible, the energy is generated by gaps or play between the device and magazine parts To keep pressure losses low. Due to manufacturing tolerances and wear and tear, this game cannot be completely canceled.
  • the ring bead has an elastic sealing lip for the closure parts on the device side in the area adjoining the outflow opening at the rear. Such a sealing lip adapts to the device-side closure parts and is additionally pressed against the device-side parts by the gas pressure. The seal therefore gets better with increasing gas pressure.
  • the propellant charges are usually inserted into the magazine by machine. For the ignition to work properly, all propellant charges must be inserted equally far into the magazine. To make this possible, it is expedient to provide the ring bead on the inside with a stop shoulder for the propellant charge. Depending on the direction of insertion of the propellant charges into the magazine, the stop shoulder is arranged on the front or rear end of the receptacle.
  • the magazine is in itself a so-called disposable part, ie it is used only once and is subsequently removed.
  • An inexpensive material, such as plastic is therefore preferably used mainly for cost reasons. Since the temperatures when igniting a propellant charge are currently very high, but the entire ignition takes only a fraction of a second, the temperature resistance of ordinary plastics is sufficient.
  • the magazine shown in FIGS. 1 and 2 consists of a strip-shaped magazine body, designated overall by 1, which has lateral transport catches 1a and passage openings 1b.
  • the passage openings 1 b are surrounded by a total of 2 annular beads, which partially taper away on their outside from the magazine body 1.
  • Sleeveless propellant charges 3 with an H-shaped cross section are arranged in the receptacle of the annular beads 2.
  • the annular bead 2 is provided with lateral outflow openings designed as hole 2a. On its inside, the annular bead 2 has an elastic sealing lip 2b in the area adjoining the holes 2a.
  • FIG. 2 the magazine shown in FIG. 1 is inserted into a setting tool, which is indicated as consisting of a barrel part, generally designated 5, a piston 6, and a closure part, generally designated 7.
  • the piston 6 is guided in a piston guide 5a of the running part 5.
  • the barrel 5 has at its rear end a receiving bore 5b for the annular bead 2 of the magazine.
  • At the bottom of the receiving bore 5b there is a blind bore designated as an anvil 5c.
  • the cross section of the anvil hole 5c is significantly smaller than that of the receiving bore 5b.
  • a closure part, designated overall by 7, interacts with the running part 5.
  • the closure part 7 has a pin 7a which projects into the annular bead 2 and supports the propellant charge 3 arranged in the magazine on one side.
  • the closure part 7 is provided with a guide bore 7b for an ignition pin which is axially displaceably mounted therein and is designated overall by 8.
  • the firing pin 8 has a conically tapering extension 8a at its front end. The cross section of the projection 8a is slightly smaller than that of the anvil hole 5c.
  • the firing pin 8 bounces against the propellant charge 3 by the force of an ignition spring or by the force of a hammer blow and thereby stamps out part of the propellant charge 3.
  • the punched-out part of the propellant charge 3 is compressed by the attachment 8a of the ignition pin 8 in the anvil hole 5c and thereby ignited.
  • the combustion spreads to the remaining propellant charge 3.
  • the combustion gases which are now developing come under high pressure through the outflow openings designed as hole 2a and the outflow channels 5d which can be made to coincide with the holes 2a into the working space 5e of the running part 5, where they act on the piston 6 and drive it away from the magazine.
  • the propellant gas losses are largely avoided by the sealing lip 2b cooperating with the pin 7a. Since the outflow channels 5d can be dimensioned relatively large, the flow losses occurring in the outflow channels 5d are also relatively small.
  • Both the magazine body 1 and the annular bead 2 are expediently made from a relatively inexpensive material such as plastic. If the magazine is to be used several times, however, metals such as aluminum alloys can also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Medicinal Preparation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Claims (5)

1. Magasin pour charges propulsives sans étui pour l'utilisation dans des appareils de scellement par explosif, avec corps de magasin plat ou en forme de bande, le corps de magasin présentant des ouvertures de passage qui sont entourées d'un renflement annulaire formant un logement pour les charges propulsives, et le contour extérieur du renflement annulaire se rétrécissant au moins partiellement dans le sens opposé au corps de magasin, caractérisé en ce que le renflement annulaire (2) comporte, sur sa circonférence, au moins un orifice d'éjection pour les gaz de combustion qui peut être mis en communication avec un conduit d'éjection (5d) situé du côté appareil.
2. Magasin selon la revendication 1, caractérisé en ce que l'orifice d'éjection est conformé en trou (2a) qui traverse le renflement annulaire (2).
3. Magasin selon la revendication 1, caractérisé en ce que l'orifice d'éjection est muni d'une membrane qui peut être détruite par la pression des gaz de combustion.
4. Magasin selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le renflement annulaire (2) présente, à sa face intérieure, dans la région faisant suite à l'arrière de l'orifice d'éjection, une lèvre d'étanchéité (2b) élastique pour les éléments obturateurs (7) situés du côté appareil.
5. Magasin selon l'une quelconque des revendication 1 à 4, caractérisé en ce que le renflement annulaire (2) est muni, sur sa face intérieure, d'une butée pour la charge propulsive (3).
EP85810174A 1984-05-16 1985-04-19 Magasin pour munition sans étui Expired EP0162010B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810174T ATE28816T1 (de) 1984-05-16 1985-04-19 Magazin fuer huelsenlose treibladungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418237A DE3418237A1 (de) 1984-05-16 1984-05-16 Magazin fuer huelsenlose treibladungen
DE3418237 1984-05-16

Publications (2)

Publication Number Publication Date
EP0162010A1 EP0162010A1 (fr) 1985-11-21
EP0162010B1 true EP0162010B1 (fr) 1987-08-12

Family

ID=6236051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810174A Expired EP0162010B1 (fr) 1984-05-16 1985-04-19 Magasin pour munition sans étui

Country Status (6)

Country Link
EP (1) EP0162010B1 (fr)
JP (1) JPS60242981A (fr)
AT (1) ATE28816T1 (fr)
AU (1) AU4123885A (fr)
DE (2) DE3418237A1 (fr)
ES (1) ES286747Y (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436446C2 (de) * 1974-07-29 1984-11-29 Hilti Ag, Schaan Pulverkraftbetriebenes Setzgerät
DE2514239A1 (de) * 1975-04-01 1976-10-14 Hilti Ag Pulverkraftbetriebenes setzgeraet

Also Published As

Publication number Publication date
DE3560426D1 (en) 1987-09-17
ES286747U (es) 1985-11-16
EP0162010A1 (fr) 1985-11-21
ES286747Y (es) 1986-06-01
JPS60242981A (ja) 1985-12-02
ATE28816T1 (de) 1987-08-15
AU4123885A (en) 1985-11-21
DE3418237A1 (de) 1985-11-21

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