EP0511133A1 - Mikroschlaggerät zur Markierung - Google Patents

Mikroschlaggerät zur Markierung Download PDF

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Publication number
EP0511133A1
EP0511133A1 EP92420134A EP92420134A EP0511133A1 EP 0511133 A1 EP0511133 A1 EP 0511133A1 EP 92420134 A EP92420134 A EP 92420134A EP 92420134 A EP92420134 A EP 92420134A EP 0511133 A1 EP0511133 A1 EP 0511133A1
Authority
EP
European Patent Office
Prior art keywords
shutter
piston
cylinder
wall
marking
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
EP92420134A
Other languages
English (en)
French (fr)
Other versions
EP0511133B1 (de
Inventor
Marcel Therond
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.)
" TECHNIFOR"
Technifor
Original Assignee
" TECHNIFOR"
Technifor
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 " TECHNIFOR", Technifor filed Critical " TECHNIFOR"
Publication of EP0511133A1 publication Critical patent/EP0511133A1/de
Application granted granted Critical
Publication of EP0511133B1 publication Critical patent/EP0511133B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H7/00—Marking-out or setting-out work
    • B25H7/04—Devices, e.g. scribers, for marking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0061—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the power drive
    • B44B5/0066—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the power drive producing a vibratory motion

Definitions

  • the present invention relates to the marking of objects, metallic or not, such as stamped, laminated, welded, molded or other types, by means of a point working by micro-percussion along a determined path comprising numbers, letters or other motives.
  • the tips of the known devices used for this type of marking are most often actuated by pneumatic means which make them vibrate at relatively high frequencies. The result is a high-intensity, high-intensity sound emission which is difficult to attenuate.
  • the invention aims to control the percussion frequency in order to be able to reduce it by taking account of the marking conditions, in order to lower the sound level without appreciably harming the quality and speed of marking.
  • the marking device which is the subject of the invention makes it possible to reduce the frequency of marking to values clearly lower than those most often used. It also makes it possible to adjust this marking frequency as a function of the conditions of use and in particular as a function of the speed of travel of the tool in the marking plane and also of the size of the signs, numbers, letters or other than we propose to achieve. This device makes it possible to obtain such results without significantly increasing the mass of the marking head. Finally, it is possible to adjust the marking frequency at any time within a determined interval.
  • the marking device according to the invention is defined in claim 1.
  • the device referenced 1 in fig. 1 has a general shape of revolution around the axis X1-X1.
  • This device 1 comprises a body 2 made of a plastic material, inside which are housed the marking tool 3 and the means enabling it to be actuated.
  • An axial passage 4 guides the tip 5 which passes through it with a minimum of play.
  • a cap 6 closes the body 2 in a leaktight manner by means of a flange 7 and an O-ring seal 8.
  • the head of the marking tool 3 is formed by a steel piston 9 which is integral with the point 5 of metal carbide and which is driven, by a compressed fluid, with an alternating movement along the axis X1-X1 to inside the cylinder 10.
  • the displacement of the piston 9 is limited by a stop 11, of revolution with respect to the axis X1-X1, carried by a part 21 itself secured to a fixed part 22 integral with the cap 6.
  • An O-ring 12 placed in an annular housing in the vicinity of the upper end of the cylinder 10, ensures a sealed connection between this cylinder 10 and the piston 9 when the latter is in abutment against the stop 11.
  • a shutter 13 with a cylindrical outer wall 14 is capable of sliding with a small clearance in a housing 15, of revolution relative to the axis X1-X1 and disposed above the cylinder 10.
  • This shutter 13 is able to move between a closed position for which its lower edge 16 is in leaktight support against the upper edge 17 of the cylinder 10 thanks to an O-ring 18, and an open position for which its frustoconical bearing surface 19 comes to sealingly bear against a corresponding bearing surface 20 of the part 21 secured to the fixed part 22.
  • the upper end of the shutter 13 has an annular wall 24, the inner edge of which slides around the fixed part 22 by means of a sealed O-ring 25 placed in an annular housing 26.
  • the cylindrical displacement of the shutter 13 in the alternate closed or open position is caused by cyclic control means indicated purely schematically in CC in FIG. 1, which connect at least one secondary pipe such as 27, 28 alternately with the channel B1 or B2 at adjustable frequency.
  • Track B1 is connected to the same source of pressurized fluid "P" (not shown) as the primary pipe A1 which is connected to the annular space 29 surrounding the connection zone between the cylinder 10 and the shutter 13 when this the latter is in the closed position.
  • Channel B2 is connected to the open air.
  • the cyclic control means CC make it possible to carry out, at a determined and adjustable frequency, the operating cycle which will now be described.
  • the first phase of this cycle connects, along path B1, the upper zone 31 of the housing 15 of the shutter with the source P by the secondary pipes 27, 28. It can be seen that the thrust exerted by the control fluid on the wall 24 of the shutter 13 is greater than that exerted in the opposite direction by the fluid coming from the same source P along the path A1 and penetrating into the thrust chamber 30 above the piston 9. In fact, the shutter, in the open position, is sealingly pressed against the part 21 by the frustoconical surfaces 19 and 20. Under these conditions the cross section of the lower edge 16 of the shutter 13 subjected to the pressure of the fluid contained in this chamber is, by construction, less than the cross section of the upper wall 24.
  • the opening of the passage between the frustoconical surfaces 19, 20 places the thrust chamber 30 in communication with the purging means constituted by the passage 33, 34, 35 and facilitates the action of the return means which makes it possible to return the piston 9 in the high position in abutment against the stop 11.
  • This return means is a fluid back pressure which is established in the annular zone 36 inside the cylinder, in its lower part, below the range of the piston 9.
  • at least one passage 37 is formed in the wall of the body 2 of the device 1 to put in direct or indirect communication the secondary pipes 27, 28 with at least one radial bore 38 produced through the wall of the cylinder 10
  • closing the shutter 13 and purging of the thrust chamber 30 are accompanied by the return in abutment of the piston 9.
  • the second phase of the cycle connects the secondary pipes 27, 28 with the open air via the path B2, which causes the purging of the superposed fluid contained in the upper zone 31 of the housing 15 and in the annular zone 36.
  • the thrust exerted by the fluid coming from the source P along the primary pipe A1 thrust which is exerted on the annular edge 16 of the shutter 13, causes its opening and drives out the piston 9 which brutally drives the tip of marking 5 in the direction of the part to be marked.
  • the entry of this passage is provided with an entry area 39 of increased diameter in which engages , with a small clearance, an extension 40 of the piston 9 at the end of the outward travel.
  • the compression of the fluid by this extension 40 in this entry zone 39 ensures effective braking of the tool 3 when the marking tip 5 does not meet the part to be marked.
  • the marking tip 5 is advantageously made of a metal carbide, for the sharpened end at least.
  • the operating frequency of the cyclic control means CC of the marking device is adjusted, so that the duration of each cycle is adjustable in a time interval of the order of 10 to 50 ms.
  • the return of the piston 9 can be carried out by another means than by the action of the pressurized fluid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Actuator (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Road Repair (AREA)
EP92420134A 1991-04-23 1992-04-22 Mikroschlaggerät zur Markierung Expired - Lifetime EP0511133B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9105350A FR2675743B1 (fr) 1991-04-23 1991-04-23 Stylet de marquage.
FR9105350 1991-04-23

Publications (2)

Publication Number Publication Date
EP0511133A1 true EP0511133A1 (de) 1992-10-28
EP0511133B1 EP0511133B1 (de) 1995-01-04

Family

ID=9412423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420134A Expired - Lifetime EP0511133B1 (de) 1991-04-23 1992-04-22 Mikroschlaggerät zur Markierung

Country Status (4)

Country Link
EP (1) EP0511133B1 (de)
DE (1) DE69201092T2 (de)
ES (1) ES2066587T3 (de)
FR (1) FR2675743B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8328097B2 (en) 2010-08-24 2012-12-11 GM Global Technology Operations LLC Multi-purpose appendable marking method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006022166B4 (de) * 2006-05-12 2008-08-07 Nc-Automation Gmbh Ritzkennzeichnungswerkzeug für NC-Maschinen und Roboter
DE102007011393A1 (de) * 2007-03-07 2008-09-11 Nc-Automation Gmbh Druckluftbetriebenes Kennzeichnungswerkzeug mit veränderlichem Impuls und variabler Frequenz
FR3058922B1 (fr) * 2016-11-21 2019-07-26 Gravotech Marking Outil de marquage et machine de marquage comprenant un tel outil
DE102017128475B4 (de) * 2017-11-30 2019-07-04 Rattunde Ag Verfahren zum Betrieb eines Markierkopfes mit Drucksensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032013A (en) * 1960-12-07 1962-05-01 Gardner Denver Co Percussive tool
US3524385A (en) * 1966-07-11 1970-08-18 Impulse Prod Corp Control means for fluid-powered devices
WO1981001447A1 (en) * 1979-11-19 1981-05-28 P Toernqvist Apparatus generating a reciprocating motion
DE3247577A1 (de) * 1982-12-22 1984-07-05 Helmut 8012 Ottobrunn Schreiner Pneumatische signiereinheit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032013A (en) * 1960-12-07 1962-05-01 Gardner Denver Co Percussive tool
US3524385A (en) * 1966-07-11 1970-08-18 Impulse Prod Corp Control means for fluid-powered devices
WO1981001447A1 (en) * 1979-11-19 1981-05-28 P Toernqvist Apparatus generating a reciprocating motion
DE3247577A1 (de) * 1982-12-22 1984-07-05 Helmut 8012 Ottobrunn Schreiner Pneumatische signiereinheit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8328097B2 (en) 2010-08-24 2012-12-11 GM Global Technology Operations LLC Multi-purpose appendable marking method

Also Published As

Publication number Publication date
FR2675743A1 (fr) 1992-10-30
FR2675743B1 (fr) 1993-07-16
DE69201092T2 (de) 1995-05-11
EP0511133B1 (de) 1995-01-04
DE69201092D1 (de) 1995-02-16
ES2066587T3 (es) 1995-03-01

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