EP0785831B1 - Procede de production d'un corps creux metallique, corps creux realise a l'aide dudit procede et dispositif de mise en uvre dudit procede - Google Patents

Procede de production d'un corps creux metallique, corps creux realise a l'aide dudit procede et dispositif de mise en uvre dudit procede Download PDF

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Publication number
EP0785831B1
EP0785831B1 EP95905517A EP95905517A EP0785831B1 EP 0785831 B1 EP0785831 B1 EP 0785831B1 EP 95905517 A EP95905517 A EP 95905517A EP 95905517 A EP95905517 A EP 95905517A EP 0785831 B1 EP0785831 B1 EP 0785831B1
Authority
EP
European Patent Office
Prior art keywords
score line
hollow body
rolling
produced
process according
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 - Lifetime
Application number
EP95905517A
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German (de)
English (en)
Other versions
EP0785831A1 (fr
Inventor
Jean-François Butty
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.)
BUTTY JEAN FRANCOIS
Original Assignee
BUTTY JEAN FRANCOIS
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Filing date
Publication date
Application filed by BUTTY JEAN FRANCOIS filed Critical BUTTY JEAN FRANCOIS
Publication of EP0785831A1 publication Critical patent/EP0785831A1/fr
Application granted granted Critical
Publication of EP0785831B1 publication Critical patent/EP0785831B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with helical guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78—Control of tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/202—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with guides parallel to the tube axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/187—Rolling helical or rectilinear grooves
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0333—Scoring
    • Y10T83/0363—Plural independent scoring blades
    • Y10T83/037—Rotary scoring blades
    • Y10T83/0378—On opposite sides of work

Definitions

  • the invention relates to a method for producing a metallic Hollow body with a cylindrical jacket, which on its outer surface with at least one predetermined breaking line is provided.
  • Such cylindrical hollow bodies can in particular be thin-walled Be hollow, for example for use as a metallic Packaging bodies are suitable as well as for use as so-called Split cannulas, as described in US 5,318,542, which are required for the introduction of medical device, such as catheters, endoscopes, etc., in human or animal body.
  • the intended breaking lines allow the packaging or the cannula to be removed without Violation of the good inside, for example sensitive Food, precision equipment, art objects, jewelry, biological Preparations such as viruses and bacteria, electronic circuits, especially to be protected from light and electromagnetic radiation Storage elements, or the medical instruments mentioned.
  • the predetermined breaking line should follow a removal of the cannula Enable the introduction of the relevant instruments without the hurt human or animal body.
  • a container for gas, vacuum and radiation-proof custody are formed, the opening of which without Touching the goods to be protected, in particular in a sterile manner, should be done.
  • the publication DE-A-25 15 312 describes a drawing process, the one Profiling on the outer surface of the metallic hollow body non-cutting forms.
  • the object of the invention is to achieve the predetermined breaking line Outer wall of a metallic hollow body, in particular one thin-walled hollow body, in a continuous manufacturing process generate, in particular one in the vicinity of this Breaking line constant wall thickness of the hollow body should be achievable and the desired outer and inner shape of the hollow body is maintained shall be.
  • the predetermined breaking lines of such a hollow body for example by milling or by stamping, it occurs either of sharp edges and burrs, particularly in medical Application represent an additional source of injury and infection, or to a deformation of the wall of the hollow body, which is a change of its cross-sectional course in the area of the predetermined breaking line.
  • stamping process also creates a deformation of the Total cross section of the hollow body, e.g. in the case of one rotationally symmetrical cannula when inserting medical Device with narrow dimensional tolerances in relation to the inside diameter of the Cannula, too high frictional forces and thus to obstruct the medical act.
  • narrow Dimensional tolerances are required to maintain a seal between the cannula and to reach the medical device.
  • the tool shown schematically in Fig. 1 is used to produce a thin-walled circular cylindrical hollow body 1 according to the invention With the help of a drawing tool 2 and a device 3 for rolling in desired breaking lines.
  • the drawing tool 2 has a drawing nozzle 2a and a free-floating core 2b.
  • the rolling device 3 contains Example shown two roller wheels 4, 5, whose profile in the front view 2 and is visible with a force F1 on the jacket of the tube 1 act.
  • the free-floating core 2b extends in the longitudinal direction over the Point of engagement of the rolling wheels 4, 5 and thus also serves as Counter bearings for these rolling wheels.
  • the in the opening 2c of the Drawing tool 2 inserted tube body is continuously moved and at the exit of the drawing nozzle 2a through the roller wheels 4, 5 with two diametral provided opposite predetermined breaking lines, the depth of which by the exerted rolling pressure is determined.
  • the arrangement shown enables the Achieving very accurate pipe dimensions and maintaining one exact rotational symmetry, since the free floating mandrel acts as a counter bearing for each of the rolling wheels serves.
  • F1 By towards the pipe center line acting forces F1 is displaced in the pipe jacket and the result is an exactly determinable residual wall thickness.
  • this Type of chipless production of the predetermined breaking line an embrittlement of the Area of reduced wall thickness achieved, whereby the opening of the manufactured hollow body is additionally facilitated.
  • the continuous Processing the tube enables very precise tolerances to be met over the entire length of the pipe and an even resistance versus the force used to break open the tubular body.
  • the front view of the rolling device according to FIG. 2 shows the storage the rolling wheels 4 and 5 and their orientation for the production of axially parallel predetermined breaking lines.
  • This device By rotating the roller wheels around the Vertical lines can be created with this device in the form of spiral predetermined breaking lines be, with the pipe to be produced in an angular rotation its axis is offset.
  • spiral breaking lines especially in medical technology the advantage that after opening the formed by the hollow body, the end breaking point in one any angle, for example an angle of 90 ° to the Starting position and thus the removal of the cannula Requirements and developments of this technology can be adapted.
  • the predetermined breaking lines of the present hollow body are used by the Process surrounded by no edges or burrs, and they can in particular by a final calibration of the tube body after the Rolling in the predetermined breaking line with a suitable choice of Drawing die diameter are produced in an almost closed form, with simultaneous setting of the desired final dimensions of the outside and Inner diameter of the hollow body.
  • Fig. 3 shows in cross section through part of a hollow body 31 such Predetermined breaking point 32, which is practical on the outer shell of the hollow body is closed, the tubular body also in the vicinity of the Predetermined breaking point has a constant outer diameter.
  • a Hollow body has an increased bending strength despite a reduced cross-section along the predetermined breaking line.
  • FIG. 4 shows schematically a system for producing a hollow body with automatically controlled residual wall thickness of the predetermined breaking points.
  • a hollow body 41 is unwound from a drum 40 and by a drawing tool 42 of the type described in Fig. 1 performed. Before or after this Drawing tools 43 and 44 are arranged with which the desired breaking lines are rolled.
  • a Depth gauge e.g. optically, acoustically or mechanically, measured the depth of the rolled profile.
  • the corresponding measured value is fed to a control amplifier 46, at the output of which Rolling pressure-determining control signal arises and via a line 47, such as shown schematically, the Einwalvorvortechniken 43 and 44 is supplied.
  • a device 48 for cutting the continuously generated endless hollow body to desired lengths indicated At the exit of the system is a device 48 for cutting the continuously generated endless hollow body to desired lengths indicated. Since this is the last manufacturing step, it allows one exact adaptation to the volume of the packaged or too protective inner body. It avoids a capital intensive Interim storage of hollow bodies of the same diameter and of different lengths.
  • Fig. 5 shows a portion of a tubular hollow body 50 which is as above mentioned is provided with a spiral predetermined breaking line 51.
  • Figures 6a and 6b show examples of non-circular cylindrical Cross-sectional shapes of the hollow bodies 60 and 65 produced, respectively in particular for accommodating two devices 61, 62 or three devices 66, 67, 68 circular cylindrical cross-section are suitable.
  • cross-sectional shapes that can be produced by a drawing process, where predetermined breaking lines such as 63, 64 and 69 at one or more points of the Jacket circumference can be generated.
  • a rotationally symmetrical Cross-sectional shape allows full use of the interior Volume of the hollow body by objects with a circular cylindrical Cross-section.
  • the method according to the invention in particular allows the production of different final diameters of the hollow body, regardless of Outside diameter and the wall thickness of the starting material in one continuous operation.
  • the manufacture becomes essential on the whole simplifies and ensures increased operational safety, especially in In the case of continuous monitoring of the remaining wall thickness. This causes also an increased and constant quality of the final product what is of great importance especially in medical handling, since a constant splitting force is essential for the safety of the application is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Materials For Medical Uses (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Metal Extraction Processes (AREA)
  • Forging (AREA)

Claims (8)

  1. Procédé de fabrication d'un corps creux métallique (1, 31, 41, 50, 60, 65) ayant un tube cylindrique, muni d'au moins une ligne de rupture (32, 51, 63, 64, 69) sur sa surface extérieure, la ligne de rupture étant réalisée par une mise en forme sur la surface extérieure dudit tube sans enlèvement de de copeaux, et des moyens comportant un noyau (2b) pour former la ligne de rupture sans enlèvement de copeaux, caractérisé en ce que ledit tube est formé par un processus d'étirage et que la ligne de rupture est produite avant, après ou pendant ce processus d'étirage et que le noyau est un noyau fixe ou flottant.
  2. Procédé selon la revendication 1, caractérisé en ce que la ligne de rupture est produite par laminage.
  3. Procédé selon la revendication 2, caractérisé en ce que les moyens de laminage sont munis d'une roue de laminage (4, 15) à pression de laminage réglable, et un dispositif de mesure de profondeur de la ligne de rupture produite et un circuit de commande en boucle fermé (46, 47) comprenant ce dispositif de mesure pour la commande de la pression de laminage.
  4. Procédé selon la revendication 1, caractérisé en ce qu'un calibrage final du corps creux est réalisé par un processus d'étirage à la suite du laminage de la ligne de rupture.
  5. Corps creux avec un tube cylindrique, muni d'au moins une ligne de rupture sur sa surface extérieure, fabriqué par le procédé selon la revendication 1, caractérisé en ce qu'il présente, dans la zone de la ligne de rupture, une épaisseur de paroi constante et que la surface extérieure du tube dans la zone de la ligne de rupture (32) est quasiment fermée.
  6. Corps creux selon la revendication 5, caractérisé en ce que la ligne de rupture (51) parcourt ledit tube en forme de spirale.
  7. Corps creux selon la revendication 5, caractérisé en ce qu'il comporte deux lignes de rupture disposées l'une à l'opposé de l'autre.
  8. Corps creux selon l'une des revendications 5 à 7, caractérisé en ce qu'il est muni d'une faible épaisseur de paroi faible en comparaison avec ses dimensions de section et que ses formes générales extérieure et intérieure ne montrent aucune déviation d'une forme voulue.
EP95905517A 1995-01-25 1995-01-25 Procede de production d'un corps creux metallique, corps creux realise a l'aide dudit procede et dispositif de mise en uvre dudit procede Expired - Lifetime EP0785831B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1995/000016 WO1996022845A1 (fr) 1995-01-25 1995-01-25 Procede de production d'un corps creux metallique, corps creux realise a l'aide dudit procede et dispositif de mise en ×uvre dudit procede

Publications (2)

Publication Number Publication Date
EP0785831A1 EP0785831A1 (fr) 1997-07-30
EP0785831B1 true EP0785831B1 (fr) 2001-07-11

Family

ID=4549962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95905517A Expired - Lifetime EP0785831B1 (fr) 1995-01-25 1995-01-25 Procede de production d'un corps creux metallique, corps creux realise a l'aide dudit procede et dispositif de mise en uvre dudit procede

Country Status (6)

Country Link
US (1) US5809822A (fr)
EP (1) EP0785831B1 (fr)
JP (1) JPH09510922A (fr)
CA (1) CA2186388C (fr)
DE (1) DE59509408D1 (fr)
WO (1) WO1996022845A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040237583A1 (en) * 2001-11-19 2004-12-02 Pietro Rancan Omega type ornamental chain and process for making the chain
CA2374201C (fr) * 2002-03-01 2006-10-10 Les Consultants Carpe Diem Jerome Inc. Appareil et methode de coupe de bois sans sciure
DE502006001891D1 (de) * 2006-04-29 2008-12-04 Mato Masch & Metallwaren Einrichtung zum Abtrennen von Deckschichten von einem Ende eines Fördergurts
EP2724845B1 (fr) * 2012-10-23 2016-08-31 Thöni Industriebetriebe GmbH Procédé et dispositif de conditionnement d'une enveloppe d'un élément déformable
WO2017165298A1 (fr) 2016-03-22 2017-09-28 Government Of The United States, As Represented By The Secretary Of The Air Force Dispositif et procédé de démontage d'aiguille d'accès vasculaire

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Also Published As

Publication number Publication date
US5809822A (en) 1998-09-22
CA2186388A1 (fr) 1996-08-01
JPH09510922A (ja) 1997-11-04
WO1996022845A1 (fr) 1996-08-01
EP0785831A1 (fr) 1997-07-30
DE59509408D1 (de) 2001-08-16
CA2186388C (fr) 2000-08-29

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