EP0214054A1 - Kümpelverfahren zum Herstellen steifer Metallteile zur Bildung von Wärmeschutzbekleidungen von Rohren, Ummantelungen und dergleichen - Google Patents

Kümpelverfahren zum Herstellen steifer Metallteile zur Bildung von Wärmeschutzbekleidungen von Rohren, Ummantelungen und dergleichen Download PDF

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Publication number
EP0214054A1
EP0214054A1 EP86401893A EP86401893A EP0214054A1 EP 0214054 A1 EP0214054 A1 EP 0214054A1 EP 86401893 A EP86401893 A EP 86401893A EP 86401893 A EP86401893 A EP 86401893A EP 0214054 A1 EP0214054 A1 EP 0214054A1
Authority
EP
European Patent Office
Prior art keywords
punch
parts
produced
shape
metal
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
EP86401893A
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English (en)
French (fr)
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EP0214054B1 (de
Inventor
Yves Malaquin
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.)
Wanner Isofi Isolation SA
Original Assignee
Wanner Isofi Isolation SA
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 Wanner Isofi Isolation SA filed Critical Wanner Isofi Isolation SA
Priority to AT86401893T priority Critical patent/ATE58315T1/de
Publication of EP0214054A1 publication Critical patent/EP0214054A1/de
Application granted granted Critical
Publication of EP0214054B1 publication Critical patent/EP0214054B1/de
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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/286—Making tube fittings for connecting pipes, e.g. U-pieces starting from sheet material

Definitions

  • the present invention relates to a method of manufacturing by stamping rigid metal parts intended to constitute thermal insulation coatings for pipes, sheaths, and other assimilable members.
  • the invention also relates to the parts produced by this method.
  • a third method consists, starting from a thin sheet rolled into a cylinder, of making folds on one side to give a progressive bending.
  • Elbows for stove pipes are made this way, but the ratio is important and these elbows cannot be oriented cylinder to fit onto the insulation of a curved pipe.
  • a thin sheet is stamped in the traditional way, with punch and die, to form two half-bends of rounded shape; the metal used is aluminum, the parts are very thin, elastic, and have insufficient rigidity.
  • the use of dies makes tools extremely expensive.
  • the present invention aims to remedy these drawbacks of the known technique by proposing a method of manufacturing by stamping rigid metal parts intended to constitute heat-insulating coatings for pipes of sheaths and other assimilable organs, which requires inexpensive tools which can be easily suitable for the farms to be produced, this method therefore making it possible to manufacture such parts of improved quality, at a lower cost than that of known methods.
  • the subject of the invention is a method of manufacturing by stamping rigid metal parts intended to constitute thermal insulation coatings for pipes, sheaths, and the like, characterized in that a metal plate is stamped , without matrix, using an appropriately shaped punch and a flat support cut to the shape of the contour of the part to be produced in projection on a plane parallel to the support the punch being moved in conditions suitable for producing an elongation combined with a controlled sliding of said plate between support and clamps.
  • said metal plate can be clamped at the periphery of the cutout of said support, by pinching between the latter and a sidewall, and the movement of the punch can be modulated so that the resulting part exactly matches the shape of the entire punch or only a part thereof.
  • the pinching will be modulated so as to allow a certain sliding of the plate.
  • the fallen edges resulting from the stamping operation can possibly be removed.
  • the punch may have any desired shape corresponding to that of the part to be formed. It may be monobloc, solid (machined or molded) or hollowed out (mechanically welded), but, in a preferred embodiment of the invention, the punch will result from the end-to-end juxtaposition and the assembly of elementary parts of corresponding shape to longitudinal sections of the workpiece. Said elementary parts will preferably be cylinder portions, with an elliptical or polygonal circular section, but they may possibly have plane surfaces. They will be arranged end to end along flat faces corresponding to cross sections of the part to be produced, each part being made integral with the plate of a stamping press by means usual in the art. The junction of the elementary parts will generate sharp edges, which will give rigidity to the formed part and allow a better distribution of the lengthening of the sheet, thus reducing the risks, existing in other systems, of constituting zones of too small thickness.
  • Each part having a shape corresponding substantially to that of a section of the part it will thus be easy, by having a sufficient set of elementary parts and by joining them end to end, to make punches of complex shape adapted to the shape of the desired part, without having to make an individual stamping punch for each part. This will result in significant time savings and a considerably reduced cost of manufacturing the parts. metallic.
  • the device represented in FIG. 1 comprises a plate 1 for a stamping press, on the underside of which is fixed, by means of bolts 2, a stamping punch generally having a U-shaped cross section, which is designated by the general reference 3.
  • the plate 1 moves under the stress of a jack in line with a fixed support frame 4, supporting a sheet metal plate 5 intended to be shaped to the profile of the desired part.
  • openings, respectively 8 and 9 for the passage of the punch 3, these openings having a profile complementary to that of the punch in the support plane.
  • the sheet metal plate to be stamped 5 being held in position on the support 4 by the sidewall clamp 6, the punch 3 is lowered with a controlled speed, so as to cause a combined elongation and displacement of the metal that the plate 5, in a manner known per se, so as to cause the plate 5 to conform to the shape of the punch by deformation, without using a matrix.
  • the stroke of the piston can be modulated as a function of the desired result, that is to say depending on whether one wishes the deformed sheet to conform to the exact shape of the punch 3 or its lower part simply.
  • the edges of the deformed part, kept pinched between the support frame and the sidewall can then be removed or cut appropriately to form these fallen edges.
  • the punch of the stamping press can be mcno- block and be made by machining or molding metal (cast iron, aluminum alloy etc ...), cement concrete or synthetic concrete (polyester resin, epoxy or other, mixed with aggregates). It may also be hollow and filled with a filling material.
  • a composite punch consisting of removable elementary parts, of advantage, will be used.
  • cylindrical such as 3a and 3b in the case of FIG. 1, each of which has a shape which matches that of a section of the part with a U-shaped section.
  • the elementary parts of the punch being removable, it will also be possible to produce, from a sufficient clearance of such parts, of various shapes and sizes, punches of extremely different shapes adapted to the desired profile.
  • Figures 5 to 11 illustrate bent parts made from such composite punches.
  • We see see (see Figure 9, for example) that it is possible to make elbows whose profile approaches very close to a curvilinear profile.
  • elementary parts of identical punch can be juxtaposed with different parts to form punches making it possible to obtain bent parts, of which only the portions corresponding to identical parts of the punches, for example the portions 12 of the parts of Figures 6 and 7, have an identical profile.
  • Figures 12, 13. and 14 are perspective views of bent parts 16, 17 and 18, produced in accordance with the invention with punches consisting of three elementary parts. As can be seen, edges such as 19, 19 ′ and 19 "appear at the joint planes of the elementary parts of the punches, but these edges, far from constituting a drawback, act as so many transverse mechanical reinforcements.
  • FIG. 15 illustrates the application of the invention to the manufacture of a double-walled elbow element intended to contain a heat-insulating material in order to isolate a pipe elbow.
  • the hollow part 23 intended to contain the heat-insulating material and the cover 24 covering the piping are produced in accordance with the invention.
  • FIG. 15 illustrates an embodiment analogous to that of FIG. 15, in which the part 25 containing the insulation is capped by the cover 26 and is closed at its end by an attached bottom.
  • the invention is not limited, of course, to the production of such parts.
  • FIGS. 17, 18 and 19 illustrate the application of the method according to the invention to the production of a tee 28 (FIG. 17) using a punch 29 consisting of three elementary parts 29a, 29b and 29c (Figure 18), passing through a cutout 30 in the support frame ( Figure 19). Tee-shaped double pieces walls, intended to contain a thermal insulator, which can of course be produced by the process according to the invention.
  • flange covers comprising two U-shaped sections 31 (figure 20), 32 (figure 21) and 33 (figure 22), can also be produced by the process according to the invention, as well as various types of valve covers with two U-shaped parts 34 (figure 23), 35 (figure 24) or 36 (figure 25).
  • the process according to the invention therefore lends itself to easy and inexpensive manufacture of multiple metal parts of common use in the technique of thermal insulation, ventilation and other activities.
  • the parts thus produced may include double walls and be used for thermal insulation of various components. They may include an integrated thermal insulator which matches their shape and that of the member to be insulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP86401893A 1985-08-30 1986-08-28 Kümpelverfahren zum Herstellen steifer Metallteile zur Bildung von Wärmeschutzbekleidungen von Rohren, Ummantelungen und dergleichen Expired - Lifetime EP0214054B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401893T ATE58315T1 (de) 1985-08-30 1986-08-28 Kuempelverfahren zum herstellen steifer metallteile zur bildung von waermeschutzbekleidungen von rohren, ummantelungen und dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8512966 1985-08-30
FR8512966A FR2586597B1 (fr) 1985-08-30 1985-08-30 Procede de fabrication par emboutissage de pieces metalliques rigides destinees a constituer des revetements de calorifuge de tuyauteries, des gaines et d'autres organes similaires

Publications (2)

Publication Number Publication Date
EP0214054A1 true EP0214054A1 (de) 1987-03-11
EP0214054B1 EP0214054B1 (de) 1990-11-14

Family

ID=9322516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401893A Expired - Lifetime EP0214054B1 (de) 1985-08-30 1986-08-28 Kümpelverfahren zum Herstellen steifer Metallteile zur Bildung von Wärmeschutzbekleidungen von Rohren, Ummantelungen und dergleichen

Country Status (5)

Country Link
EP (1) EP0214054B1 (de)
AT (1) ATE58315T1 (de)
DE (1) DE3675610D1 (de)
ES (1) ES2001765A6 (de)
FR (1) FR2586597B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510759A1 (de) * 1991-04-26 1992-10-28 AP&T Automation & Tooling AB Verfahren zur Herstellung von dünnwandigen Rohrkrümmern

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE284081C (de) *
DE310993C (de) *
US1678744A (en) * 1927-05-21 1928-07-31 Western Metal Specialty Co Method of making pipe elbows
FR785375A (fr) * 1935-02-07 1935-08-08 Decauville Aine Soc Nouv Ets Nouveau procédé d'emboutissage, machine pour son application et pièces embouties obtenues
FR798402A (fr) * 1935-11-29 1936-05-16 Cie Ind D App Radio Electr Perfectionnements à la fabrication des raccords pour tubes et canalisations
FR2166158A1 (de) * 1971-12-29 1973-08-10 Combustion Eng

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289081C (de) *

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE284081C (de) *
DE310993C (de) *
US1678744A (en) * 1927-05-21 1928-07-31 Western Metal Specialty Co Method of making pipe elbows
FR785375A (fr) * 1935-02-07 1935-08-08 Decauville Aine Soc Nouv Ets Nouveau procédé d'emboutissage, machine pour son application et pièces embouties obtenues
FR798402A (fr) * 1935-11-29 1936-05-16 Cie Ind D App Radio Electr Perfectionnements à la fabrication des raccords pour tubes et canalisations
FR2166158A1 (de) * 1971-12-29 1973-08-10 Combustion Eng

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510759A1 (de) * 1991-04-26 1992-10-28 AP&T Automation & Tooling AB Verfahren zur Herstellung von dünnwandigen Rohrkrümmern

Also Published As

Publication number Publication date
ATE58315T1 (de) 1990-11-15
EP0214054B1 (de) 1990-11-14
ES2001765A6 (es) 1988-06-16
FR2586597B1 (fr) 1990-02-02
DE3675610D1 (de) 1990-12-20
FR2586597A1 (fr) 1987-03-06

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