WO2018115656A1 - Dispositif de pliage pour former une ondulation dans une tole metallique et procede d'utilisation dudit dispositif - Google Patents
Dispositif de pliage pour former une ondulation dans une tole metallique et procede d'utilisation dudit dispositif Download PDFInfo
- Publication number
- WO2018115656A1 WO2018115656A1 PCT/FR2017/053606 FR2017053606W WO2018115656A1 WO 2018115656 A1 WO2018115656 A1 WO 2018115656A1 FR 2017053606 W FR2017053606 W FR 2017053606W WO 2018115656 A1 WO2018115656 A1 WO 2018115656A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- portions
- head
- cavity
- punch
- longitudinal direction
- 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.)
- Ceased
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Classifications
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- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
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- 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
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
Definitions
- the invention relates to a folding device for forming a corrugation in a metal sheet and to a method of using this folding device.
- the invention relates more particularly to the field of tanks, waterproof and thermally insulating membranes, for the storage and / or transport of fluid, such as a cryogenic fluid; a corrugated metal sheet obtained by means of the folding device according to the invention being in particular intended for the construction of a sealed membrane of such a tank.
- each waterproofing membrane consists of a plurality of metal plates having a series of perpendicular corrugations allowing it to deform under the effect of thermal and mechanical stresses generated by the fluid stored in the tank.
- corrugated waterproofing membrane is for example described in the document W016034782.
- the corrugated membrane has a first series of parallel corrugations extending in a first direction and a second series of parallel corrugations extending in a second direction perpendicular to the first direction.
- the waves of the first series are first formed, then the second series of waves and the nodes at the junction are formed in a second step. between the undulations of the first series and the second series.
- the aforementioned document W016034782 discloses a folding device for forming the corrugations of the first series.
- the folding device comprises dies supported by the lower frame and punches supported by the upper frame.
- the punches are each intended to engage inside of one of the dies so as to form a corrugation when the upper frame moves downwards, towards the lower frame, from its rest position to its folding position.
- the punches and the dies each have an alternation of portions of a first and a second type.
- the portions of the first type have a semi-elliptic shape and thus make it possible to give the corrugation its final shape while the portions of the second type have a substantially triangular shape and make it possible to give the corrugation a geometry that subsequently allows it to be folded in a perpendicular direction.
- the corrugation is, on the one hand, shaped so as to give it its final shape, in the areas that are not intended to be reworked thereafter to form a zone of node, and, secondly, has a shape allowing the subsequent formation of the node area in areas that will be folded again, during the subsequent folding step.
- the portions of the first and second types of the punch and the die are separated from each other by free spaces so as to provide transition zones between the portions of the first and second types.
- free spaces are not completely satisfactory because the use of free spaces is likely to cause inaccuracies in the positioning of the different portions of the first and second type.
- the portions of the first and second types of the punch and the die are separated from one another by transition zones.
- such an arrangement is not totally satisfactory because it requires a relative positioning of the different zones which is very precise, otherwise the corrugation formed has, in the transition zones, irregularities that may adversely affect the mechanical behavior of the metal sheet.
- An idea underlying the invention is to provide a folding device for forming a corrugation in a metal sheet which is simple and precise and it is possible to produce, in a single folding step, a corrugation which has shaped zones, having their definitive shape, and at least one non-shaped zone having a shape allowing the subsequent formation of the node zone in said non-conformed zone.
- the invention provides a folding device for forming a corrugation in a metal sheet, the folding device comprising:
- a first frame and a second frame movable vertically relative to each other between a rest position and a folding position;
- the first frame supporting a punch corresponding to the shape of the corrugation to be formed and extending in a longitudinal direction;
- the second frame supporting a matrix having an imprint; said fingerprint being disposed opposite the punch and arranged in such a way that the punch engages inside the cavity, so as to press the metal sheet between the punch and the impression, when one of the first and second frame moves relative to the other between a rest position and a folding position;
- the first punch comprising a head which has a generally V-shaped cross-section and which comprises at least a first portion and two second portions disposed on either side of the first portion in the longitudinal direction, the first portion being connected to each of the second portions having a transition zone, each of the first and second portions having two lateral faces joining at a ridge zone so as to define the generally V-shaped section; the lateral faces of the first portion being flat and the lateral faces of the second portions being arcuate and convex;
- the imprint comprising at least a first portion and two second portions disposed on either side of the first portion in the longitudinal direction; the first portion and the second portions of the cavity respectively having a section complementary to the section of the first portion and the second portions of the head;
- the first portion of the head being disposed opposite the first portion of the cavity and the second portions of the head being respectively disposed opposite to one and the other of the second portions of the cavity;
- the two transition zones being respectively arranged opposite one and the other of the second portions of the cavity and being able to come and stay in these when one of the first and second frame moves relative to the other from its rest position to its folding position.
- the corrugation is, on the one hand, shaped so as to give it its final shape, in the areas that are not intended to be reworked thereafter to form a zone of node, and, secondly, has a shape allowing the subsequent formation of the node area in areas that will be folded again, during the subsequent folding step.
- such an arrangement is simple to implement because the different portions of the punch and the matrix can be contiguous to each other without a free space likely to cause inaccuracy of additional positioning is formed between the different areas and without the footprint has transition zones whose positions along the x axis must correspond precisely to that of the transition zones of the head.
- such a folding device may have one or more of the following characteristics.
- the first portion of the head has dimensions in the longitudinal direction which are greater than those of the first portion of the cavity, the first portion of the head being disposed such that said first portion of the head head has two ends which are respectively disposed opposite one and the other of the two second portions of the cavity and adapted to be housed therein when one of the first and second frame moves relative to the other from its rest position to its folding position.
- each transition zone comprises two lateral faces joining at a ridge zone, said lateral faces each having a flat surface and inclined with respect to the longitudinal direction so as to connect one of the faces. arcuate sides of the second portion of the head and one of the flat lateral faces of the first portion of the head.
- each transition zone comprises two plane surfaces which extend in a junction plane, transverse to the longitudinal direction, and connect one of the arcuate side faces of the second portion of the head and one of flat lateral faces of the first portion of the head.
- the first portion of the head has two ends which each extend in a plane which is orthogonal to the longitudinal direction.
- each transition zone extends between two transverse planes which are orthogonal to the longitudinal axis of the corrugation to be formed.
- the first portion of the head has two ends that each extend in a plane that is transverse to the longitudinal direction and inclined relative to the longitudinal direction so that the dimensions of the first portion of the head, in the longitudinal direction, increase towards the crest zone.
- the first portion of the cavity has two ends which each extend in a plane which is transverse to the longitudinal direction and is inclined relative to the longitudinal direction so that the dimensions of the first portion of the footprint along the longitudinal direction increase towards the crest zone.
- each transition zone extends between two transverse planes which are inclined with respect to the longitudinal axis of the corrugation to be formed.
- the punch comprises at least one first element and two second distinct elements, the second elements being arranged, in the longitudinal direction, on either side of said first element; the first element forming at least partially the first portion of the head and the second elements each forming one of the second portions and one of the transition zones of the head.
- the second elements of the matrix each further form a part of the first portion of the head.
- the punch comprises at least one first element and two second distinct elements, the second elements being arranged, in the longitudinal direction, on either side of said first element; the first element forming the first portion of the head and the second elements each forming one of the second portions of the head, the zones of transition being each made at the junction between the first element and one of the second elements of the head.
- the matrix comprises at least a first element and two second distinct elements which are arranged in the longitudinal direction on either side of said first element; the first element and the second elements of the matrix forming respectively the first portion and the second portions of the cavity.
- the head comprises n first portions and n + 1 second portions, n being an integer, each of the first portions of the head being disposed between two second portions of the head and connected to said second portions by a zone of transition;
- the imprint having n first portions and n + 1 second portions; each first portion of the head being disposed facing one of the first portions of the cavity and the second portions of the head being each arranged facing one of the second portions of the cavity; and
- the invention also provides a method of using a folding machine comprising:
- FIG. 1 is a view of a corrugated metal sheet for the construction of a sealed membrane of a liquefied gas storage tank such as natural gas.
- FIG. 2 illustrates a reinforcing piece intended to be inserted into a corrugation of a sealed membrane so as to reinforce said waterproof membrane against the pressure of the fluid contained in the tank.
- FIG. 3 is a perspective view of a folding device according to a first embodiment.
- FIG. 4 is a side view of the punch and die FIG.
- FIG. 5 is a perspective view illustrating a first element of the matrix and a first element of the punch of FIGS. 3 and 4.
- FIG. 6 is a front view of the first element of the punch illustrated in FIG.
- FIG. 7 is a front view of the first element of the matrix, illustrated in FIG.
- FIG. 8 is a perspective view illustrating a second element of the matrix and a second element of the punch of FIGS. 3 and 4.
- FIG. 9 is a front view of the second element of the matrix, illustrated in FIG. 8.
- FIG 10 is a front view of the second element of the punch, illustrated in Figure 8.
- FIG. 11 is a sectional view of the punch and the matrix in fold position along the plane XI-XI of FIG. 4.
- FIG. 12 is a perspective view of a punch and a die according to a second embodiment.
- FIG. 13 is a side view of the punch and die FIG.
- - Figure 14 is a schematic view of a punch and a die according to a third embodiment.
- - Figure 15 is a partial perspective view of a metal sheet according to an alternative embodiment.
- FIG. 1 illustrates a corrugated metal sheet 1 intended for the formation of a sealed membrane of a tank for storing a cryogenic fluid, such as liquefied natural gas.
- the metal sheet 1 comprises a first series of parallel corrugations 2, said low, extending in a direction y and a second series of parallel corrugations 3, said high, extending in a direction x.
- the x and y directions of the series of undulations are perpendicular.
- the corrugations 2, 3 are projecting on the side of the internal face of the metal sheet 1, intended to be placed in contact with the fluid contained in the tank.
- the edges of the metal sheet 1 are here parallel to the corrugations 2, 3.
- the terms "high” and "low” have a relative meaning and mean that the undulations 2, said low, have a height lower than the undulations 3, say high.
- the corrugations 2, 3 have identical heights.
- the metal sheet 1 comprises between the corrugations 2, 3, a plurality of flat surfaces 4. At each crossing between a low corrugation 2 and a high corrugation 3, the metal sheet 1 comprises a node zone 5.
- the node zone 5 comprises a central portion 6 having an apex projecting towards the inside of the tank. Moreover, the central portion 6 is bordered, on the one hand, by a pair of concave corrugations 7 formed in the crest of the high corrugation 3 and, on the other hand, by a pair of recesses 8 into which the low ripple 2.
- the corrugations 2, 3 of the metal sheet 1 allow the waterproofing membrane to be flexible in order to be deformed under the effect of thermal and mechanical stresses generated by the liquefied natural gas stored in the tank.
- the metal sheet 1 may in particular be made of stainless steel, aluminum, Invar ®: that is to say an alloy of iron and nickel whose expansion coefficient is typically between 1, 2.10 "6 and 2.10 " 6 K “1 , or in an iron alloy with a high manganese content whose expansion coefficient is typically of the order of 7 ⁇ 10 -6 K -1 .
- the metal sheet 1 has a thickness of about 1.2 mm. Other thicknesses are also conceivable, knowing that a thickening of the metal sheet 1 causes an increase in its cost and generally increases the rigidity of the corrugations 2, 3.
- Figures 3 to 1 1 show a folding device, according to a first embodiment, to form a first corrugation in a metal sheet, prior to the formation of at least a second corrugation perpendicular to said first corrugation.
- the second undulation as well as the node at the intersection between the first and second corrugations may be subsequently produced by means of a folding machine, as described in application WO205 70054.
- the folding device comprises an upper frame 9 and a lower frame 10, shown in dashed lines in FIG. 3.
- the upper frame 9 is movable relative to the lower frame 10 between a high rest position and a low folding position.
- the upper frame 9 and the lower frame 10 respectively support a punch 11 and a die 12.
- the punch 11 is disposed above the die 12 and is intended to engage inside the cavity 13 of the die 12 when the upper frame 9 moves relative to the lower frame 8 from its rest position. towards its folding position, in order to press the metal sheet 1 between the punch 11 and the die 12 and thus form the corrugation in the metal sheet 1.
- the punch 11 comprises, at its lower end, a head 14 which extends in the longitudinal direction x, parallel to the longitudinal direction of the corrugation to be shaped, and which has a shape corresponding to the shape of said corrugation.
- the head 14 has a generally V-shaped section which is bordered by two lateral flanges 15, 16 straightening towards the horizontal.
- the head 14 extends over a length substantially equal to the size of the metal sheet 1 to bend, in the direction x.
- the die 12 has a cavity recess 13 for receiving the head 14 of the punch 11 when the upper frame 9 moves from its rest position to its folding position.
- the impression 13 extends in the x direction and has a length substantially equal to that of the head 14.
- the section of the cavity 13 is also in the general shape of V.
- two horizontal bearing surfaces 17, 18 laterally border the footprint 13, on either side of it.
- the horizontal bearing surfaces 17, 18 are intended to support the metal sheet 1 beforehand and during the folding operation.
- Each of the horizontal bearing surfaces 17, 18 is arranged below one of the two lateral flanges 15, 16 of the punch 11 so that, when the upper frame 9 is in its folding position, the lateral flanges 15, 16 press the metal sheet 1, on either side of the corrugation, against the horizontal bearing surfaces 17, 18.
- the punch 11 and the die 12 are each formed of a plurality of elements 19, 20a, 20b, 21, 22a, 22b placed end-to-end, one against the other, according to the direction x.
- the punch 11 comprises a first element 19 and two second elements 20a, 20b which are arranged, in the direction x, on either side of the first element 19.
- the matrix 12 comprises a first element 21 and two second elements 22a, 22b which are arranged in the direction x, on either side of the first element 21.
- the first element 19 of the punch 11 has a length equal to that of the first element 21 of the matrix 12.
- the first element 19 of the punch 11 is disposed above the first element 21 of the matrix 12 in a position such that the positions, on the x-axis, the two ends of the first element 19 of the punch 11 and those of the two ends of the first element 21 of the die 12, are identical.
- the second elements 20a, 20b of the punch 1 1 have a length identical to that of the second elements 22a, 22b of the matrix 12.
- Each of the second elements 20a, 20b of the punch 11 is disposed above one of the second elements 22a, 22b of the matrix 12 and in a position such that the positions on the X axis of the two ends of said second element 20a, 20b of the punch 11 and those of the two ends of the second element 22a, 22b of the die 12 in look are identical.
- the folding device shown is intended to obtain a metal sheet in which the The corrugation formed by means of said folding device will be traversed only by a single perpendicular corrugation.
- the punch 1 1 and the die 12 each comprise n first elements 19, 21, and n + 1 second elements 20a, 20b, 22a, 22b, each of the first elements 19, 21 of the punch 1 1 and the die 12 being respectively interposed between two second elements 20a, 20b, 22a, 22b of the punch 1 1 and the die 12.
- FIGS. 5 to 7 illustrate the first element 19 of the punch 1 1 and the first element 21 of the matrix 12.
- the section of the head 14, at the level of the first element 19 of the punch 1 1 has a general shape of V and is constant. As shown in FIG. 6, said section has two substantially plane lateral faces 23, 24 joining at a ridge zone 25. The ridge zone 25 has a rounding.
- the section of the cavity 13 at the first element 21 of the matrix 12 is also constant and has a shape complementary to that of the head 14 at the first element 19 of the punch 1 1. In other words, as shown in FIG. 7, this section also has two substantially plane lateral faces 26, 27 joining at a rounded ridge zone 28.
- Figures 8 to 10 show one of the second elements 20a of the punch 1 1 and one of the second elements 22a of the die 12, the other second elements 20b, 22b of the punch 1 1 and the die 12 being identical.
- the section of the cavity 13, at a second element 20a of the matrix 1 1 has a general shape of V and is constant. As shown in Figure 10, said section has two side faces 29, 30, arcuate and concave, which meet at a ridge zone 31, rounded.
- the section of the head 14 at a second element 20a of the punch 11 is not constant. At each of its ends, the second element 20a of the punch 1 1 has a section identical to that of the first element 19 of the punch 1 1. In other words, as shown in FIG. 9, the head 14 presents at the level of said end of the second member 20a, a section having two planar side faces 32, 33 joining at a ridge zone 34, rounded.
- the head 14 of the second element 20a also has, at its ends, a portion 35 whose section has a shape complementary to that of the section of the cavity 13 of the second element 22a of the matrix 12.
- the section of this portion 35 has two lateral faces 36, 37, arcuate and convex, which meet at a ridge zone.
- the peak zone of the portion 35 is rounded and extends in the extension of the crest zone 34 of the ends of the second element 22a.
- the head 14 has a transition zone 38 which connects the portion 35 to each end of the second element 20a.
- Each transition zone 38 has two lateral faces 39, 40 which meet at a rounded ridge zone.
- the crest zone extends in the extension of the crest zones 34 of the ends of the second element 20a and of the portion 35.
- the lateral faces 39, 40 each have a flat surface inclined with respect to the direction x, which connects the one of the arcuate side faces 36, 37 of the portion 35 and one of the lateral faces 32, 33 planes of the end of the second member 20a.
- the section of the head 14 at the ends of the second elements 20a, 20b and at the level of the transition zone 38 is capable of being housed inside the section of the cavity 13, at the second elements 22a, 22b of the matrix 12.
- the head 14 of the punch 11 thus comprises: a first portion 41 which extends from one end of one of the second element 20a to one of the ends of the other of the second elements 20a, through the first element 19 and whose section has two lateral faces 23, 24, 32, 33 planes;
- second portions 35 which have a section having two lateral faces 36, 37, arcuate and convex;
- the imprint 13 of the matrix 12 comprises:
- transition zones 38 of the head 14 are arranged facing the second portions 43 of the cavity 13 and are housed in said second portions 43 when the upper frame 9 moves in its folding position. Such an arrangement makes it possible to produce a corrugation having two zones of different cross-sections, in a simple and precise manner, and in particular without the footprint having transition zones whose positions along the x-axis correspond to that of the transition zones. 38 of the head 14.
- the invention is not limited to such an embodiment. It is thus conceivable to make a head 14 in one piece or comprising a greater or smaller number of elements 19, 20a, 20b. Similar variations are also conceivable for matrix 12.
- the corrugation 3 to be formed may have one or more reinforcing indentations 55 in each portion of the corrugation 3 between two node zones 5, as shown in FIG. 15.
- Such notches 55 are intended to improve the resistance of the waves to the pressure.
- Each indentation 55 is generally concave and is recessed on the side of the inner face of the metal sheet 1.
- the second portions 43 of the imprint comprise one or a plurality of projections protruding inwardly beyond the remainder of the second portions 43 while the second portions 35 of the head 14 of the punch 11 have re-entrant portions of complementary shape to said protrusions, and facing said projections.
- the corrugation has reinforcing ribs in each portion of the corrugation 3 between two node zones 5.
- the ribs are generally convex and protrude from the side of the face In this case, it is the second portions of the head 14 of the punch 11 which have one or more protruding portions protruding outwardly 43 while the second portions 43 of the recess 13 have re-entrant parts of complementary shape.
- Figures 12 and 13 show a folding device according to a second embodiment.
- This embodiment differs from the preceding embodiment in that the ends of the different portions 35, 38, 41, 42, 43 of the head 14 and the cavity 13 extend in planes which are transverse and inclined relative to each other. to the X axis while in the previous embodiment, they extend in planes orthogonal to the X axis.
- Each end of the first and second portions 41, 35 of the head 14 and each end of the first and second portions 42, 43 of the cavity 43 extend in planes that are inclined with respect to the direction x so that, on the one hand, the dimensions along the X axis of the first portion 41, 42 of the 14 head and the footprint 13 increase towards their ridge area 25, 28 respectively and that on the other hand, the dimensions along the X axis of the second portion 35, 43 of the head 14 and the imprint 13 decreases toward their respective peak zone 31.
- the ends of the first and second members 19, 20a, 20b, 21, 22a, 22b of the punch 1 1 and the die 12 are correspondingly inclined.
- Such a folding device aims at producing a corrugation in which each transition line between two zones of different shapes is inclined. This is particularly advantageous when the metal sheet 1 thus produced is intended to be associated with reinforcement pieces 44, as represented in FIG. 2.
- Such reinforcing pieces 44 are intended to be arranged under the corrugations between the waterproofing membrane and the support of this waterproofing membrane.
- the reinforcing pieces 44 make it possible to reduce the stresses in the sealing membrane that may be caused by a multitude of factors, including the thermal shrinkage during the cold setting of the tank, the bending effect of the beam of the ship, and the dynamic pressure due to the movement of the cargo, especially because of the swell.
- Such reinforcing pieces 44 are described in particular in document WO2010040922.
- the reinforcement piece 44 comprises a hollow envelope 45, which constitutes the main body of the reinforcement piece.
- the base wall 46 of reinforcement 44 is flat to rest on the support of the membrane.
- the hollow envelope 45 has an upper wall 47 whose shape allows the reinforcing piece 44 to conform to the shape of the zone of the corrugation in which it is inserted, namely a shaped shape corresponding to the shape of the second portions 35, 43 of the head 14 of the punch 1 and the cavity 13 of the matrix 12 of the folding device described above.
- Ribs 48 of thin thickness are arranged inside the hollow envelope 45 to reinforce its rigidity, for example five ribs deployed in a star around a central core.
- the longitudinal ends 49 of the hollow envelope 45 are cut along a plane inclined with respect to the longitudinal axis of the reinforcement piece 44.
- the inclination of the longitudinal ends of the hollow envelope 45 corresponds at the inclination of the transition between two zones of the corrugation obtained by means of the folding device of FIGS. 12 and 13. This makes it possible to increase the contact surface between the reinforcement piece 44 and the corrugation in which it is housed and thus contributes to improving the effectiveness of the reinforcing pieces 44.
- Figure 14 schematically shows a folding device according to a third embodiment.
- the punch 11 and the die 12 are each formed of a plurality of first members 50, 52 and second members 51, 53 alternately arranged against one another.
- the head At the level of the first elements 50 of the punch 11, the head has a constant section similar to that shown in FIG. 6 while at the level of the second elements 51 of the punch, the head has a constant section similar to that of the portion 35 of the second element 20a of Figure 9.
- the section of the cavity corresponds respectively to that of the first element 21, as shown in Figure 7, and to that of the second element 22a, as shown in FIG.
- the transition zones 54 between the different portions of the head of the punch 1 1 are each made at the junction between a first element 50 and a second element 51.
- the transition zone is thus formed by the orthogonal surface to the X axis of the end of a second element 51 which connects the arcuate side faces of the section of the second element 51 and the flat side faces of the section of the first adjacent member 50.
- the first elements 50 of the punch 11 have a dimension in the direction x which is greater than that of the first corresponding elements 52 of the matrix 12.
- each first element 50 of the punch 11 is arranged so that its two longitudinal ends are respectively above the one and the other of the two second elements 53 of the matrix 12 which are arranged on either side of the first element 52 of the matrix 12 corresponding.
- the transition zones 54 are located above the second elements 53.
- each element 21, 22a, 22b, 52, 53 of matrix 12 is formed in one piece, the invention also applies to matrix elements comprising two lateral portions and a movable central portion relative to said two lateral portions, as described in the application WO016034782.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020187024524A KR102371115B1 (ko) | 2016-12-23 | 2017-12-15 | 금속 시트에 주름을 형성하기 위한 폴딩 장치 및 상기 장치의 이용 방법 |
| CN201780080021.0A CN110114159B (zh) | 2016-12-23 | 2017-12-15 | 用于在金属板中形成波纹的弯折装置及使用所述装置的方法 |
| RU2019118039A RU2748312C2 (ru) | 2016-12-23 | 2017-12-15 | Гибочное устройство для образования гофра в металлическом листе и способ использования такого устройства |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1663353A FR3061046B1 (fr) | 2016-12-23 | 2016-12-23 | Dispositif de pliage pour former une ondulation dans une tole metallique et procede d'utilisation dudit dispositif |
| FR1663353 | 2016-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018115656A1 true WO2018115656A1 (fr) | 2018-06-28 |
Family
ID=58455213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2017/053606 Ceased WO2018115656A1 (fr) | 2016-12-23 | 2017-12-15 | Dispositif de pliage pour former une ondulation dans une tole metallique et procede d'utilisation dudit dispositif |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR102371115B1 (fr) |
| CN (1) | CN110114159B (fr) |
| FR (1) | FR3061046B1 (fr) |
| RU (1) | RU2748312C2 (fr) |
| WO (1) | WO2018115656A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3043344B1 (fr) * | 2015-11-05 | 2017-12-08 | Gaztransport Et Technigaz | Machine de pliage pour former une ondulation dans une tole metallique et procede d'utilisation d'une telle machine de pliage |
| FR3095355B1 (fr) * | 2019-04-29 | 2021-10-29 | Gaztransport Et Technigaz | Système de pliage pour former une ondulation dans une pièce et procédé d’utilisation du dispositif |
| CN117399480A (zh) * | 2023-10-27 | 2024-01-16 | 中海石油气电集团有限责任公司 | 波纹板冲压方法及波纹板 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1534299A (en) * | 1921-12-21 | 1925-04-21 | William M Connery | Corrugation-forming die for metal plates |
| JPS5961527A (ja) * | 1982-09-29 | 1984-04-07 | Nippon Kokan Kk <Nkk> | 底部コルゲ−シヨンメンブレンのダイバ−ト成形装置 |
| US20070005176A1 (en) * | 2004-10-29 | 2007-01-04 | Tsunehiko Yamazaki | Method for producing die for press brake and die |
| WO2010040922A1 (fr) | 2008-10-08 | 2010-04-15 | Gaztransport Et Technigaz | Cuve a membrane ondulée renforcée |
| KR20100091753A (ko) * | 2009-02-11 | 2010-08-19 | 삼성중공업 주식회사 | 금속 멤브레인 조립체 및 그 제조방법 |
| WO2015170054A1 (fr) | 2014-05-06 | 2015-11-12 | Gaztransport Et Technigaz | Dispositif de pliage pour former une ondulation dans une tole metallique et procede d'utilisation d'un dispositif de pliage |
| WO2016034782A1 (fr) | 2014-09-02 | 2016-03-10 | Gaztransport Et Technigaz | Dispositif de pliage pour former simultanément une pluralité d'ondulations dans une tôle métallique et procédé d'utilisation du dispositif |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU845955A1 (ru) * | 1979-10-22 | 1981-07-15 | Челябинский Политехнический Институтим. Ленинского Комсомола | Устройство дл гибки листовыхзАгОТОВОК |
| SE431519B (sv) * | 1980-03-04 | 1984-02-13 | Groko Maskin Ab | Sett att bocka profilerad plat samt anordning for genomforande av settet |
| JPS60187432A (ja) * | 1984-03-07 | 1985-09-24 | Shuichi Amano | プレス装置 |
| FR2861060B1 (fr) * | 2003-10-16 | 2006-01-06 | Gaz Transport & Technigaz | Structure de paroi etanche et cuve munie d'une telle structure |
| RU2299108C1 (ru) * | 2005-08-23 | 2007-05-20 | Открытое акционерное общество "Завод им. В.А. Дегтярева" | Штамп для гибки деталей криволинейной формы |
| KR20090119470A (ko) * | 2008-05-16 | 2009-11-19 | 주식회사 화인텍 | 액화천연가스 저장탱크용 멤브레인의 성형방법 및 성형장치 |
| JP6028671B2 (ja) * | 2013-04-24 | 2016-11-16 | トヨタ紡織株式会社 | 金属板材の成形方法及び成形装置 |
| CA2916870C (fr) | 2013-06-25 | 2017-12-12 | Nissan Motor Co., Ltd. | Dispositif et methode servant a former un substrat forme en plaque mince |
| AT515153B1 (de) * | 2013-12-04 | 2015-08-15 | Trumpf Maschinen Austria Gmbh | Biegemaschine |
-
2016
- 2016-12-23 FR FR1663353A patent/FR3061046B1/fr active Active
-
2017
- 2017-12-15 CN CN201780080021.0A patent/CN110114159B/zh active Active
- 2017-12-15 KR KR1020187024524A patent/KR102371115B1/ko active Active
- 2017-12-15 WO PCT/FR2017/053606 patent/WO2018115656A1/fr not_active Ceased
- 2017-12-15 RU RU2019118039A patent/RU2748312C2/ru active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1534299A (en) * | 1921-12-21 | 1925-04-21 | William M Connery | Corrugation-forming die for metal plates |
| JPS5961527A (ja) * | 1982-09-29 | 1984-04-07 | Nippon Kokan Kk <Nkk> | 底部コルゲ−シヨンメンブレンのダイバ−ト成形装置 |
| US20070005176A1 (en) * | 2004-10-29 | 2007-01-04 | Tsunehiko Yamazaki | Method for producing die for press brake and die |
| WO2010040922A1 (fr) | 2008-10-08 | 2010-04-15 | Gaztransport Et Technigaz | Cuve a membrane ondulée renforcée |
| KR20100091753A (ko) * | 2009-02-11 | 2010-08-19 | 삼성중공업 주식회사 | 금속 멤브레인 조립체 및 그 제조방법 |
| WO2015170054A1 (fr) | 2014-05-06 | 2015-11-12 | Gaztransport Et Technigaz | Dispositif de pliage pour former une ondulation dans une tole metallique et procede d'utilisation d'un dispositif de pliage |
| WO2016034782A1 (fr) | 2014-09-02 | 2016-03-10 | Gaztransport Et Technigaz | Dispositif de pliage pour former simultanément une pluralité d'ondulations dans une tôle métallique et procédé d'utilisation du dispositif |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2019118039A (ru) | 2021-01-25 |
| FR3061046B1 (fr) | 2019-05-24 |
| CN110114159A (zh) | 2019-08-09 |
| RU2019118039A3 (fr) | 2021-01-25 |
| RU2748312C2 (ru) | 2021-05-21 |
| CN110114159B (zh) | 2021-08-20 |
| FR3061046A1 (fr) | 2018-06-29 |
| KR102371115B1 (ko) | 2022-03-07 |
| KR20190100017A (ko) | 2019-08-28 |
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