EP3183189B1 - Fond de contenant et procédé de fabrication dudit fond - Google Patents
Fond de contenant et procédé de fabrication dudit fond Download PDFInfo
- Publication number
- EP3183189B1 EP3183189B1 EP15760105.5A EP15760105A EP3183189B1 EP 3183189 B1 EP3183189 B1 EP 3183189B1 EP 15760105 A EP15760105 A EP 15760105A EP 3183189 B1 EP3183189 B1 EP 3183189B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- knuckle
- radius
- section
- contour
- area
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000013067 intermediate product Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 238000007639 printing Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/12—Large containers rigid specially adapted for transport
- B65D88/128—Large containers rigid specially adapted for transport tank containers, i.e. containers provided with supporting devices for handling
-
- 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
- B21D22/20—Deep-drawing
-
- 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
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
Definitions
- the present invention relates to a container bottom and a method for its production.
- Container bottoms are usually curved sheet metal elements which serve to close the ends of a generally cylindrical container or to divide it into several chambers.
- the containers themselves are usually cylindrical in shape and have different cross-sections (for example circular, elliptical, two-shell, four-shell, case-shaped).
- the container jacket is formed from one or more curved sheet metal elements (manufactured in a rolling process) and has a tubular shape with a corresponding cross-sectional geometry. The ends of such a jacket shot are closed with appropriate container bottoms.
- the container bottoms are usually welded to the jacket section for this purpose.
- the container base has a connection contour corresponding to the jacket section, so that the jacket and base meet at their respective connection contours and can be connected to one another via a butt weld that is advantageous in terms of production and strength.
- connection configurations in which the bottom of the container is inserted or plugged into the jacket section and the connection between the two elements is made via a fillet weld.
- the container bottoms generally have a cylindrical or conical rim or rim that merges over a relatively narrowly curved (toroidally curved) brim area into a flat - usually spherical - domed spherical cap area, which forms the predominant surface area of the actual floor.
- toroidal bottoms which have a dished bottom shape according to DIN 28011, a basket arch bottom shape according to DIN 28013 or are designed as an elliptical bottom or as a normal / flat-arched bottom.
- Such floors are usually produced in a two-stage process, in which - starting from a flat sheet metal disc (round plate or blank) - the spherical curvature is first formed in a pressing process (pummeling) and then the brim area and the so-called shelf in a pressing process (flanging ) is molded on.
- a pressing process prummeling
- flanging shelf in a pressing process
- these can also be produced entirely in a pressing process (usually a deep-drawing process).
- Such curved floors for non-circular tank cross sections are particularly demanding.
- Such floors are from, for example DE 200 05 521 U known.
- Different utilization ranges for so-called silo containers that connect to non-circular tank cross-sections are, for example US 6,059,372 and the US 6,401,983 B1 known.
- Such areas can be made of glass fiber reinforced plastics.
- the usual base shapes in which a uniform radius of curvature in the dome area changes into a uniform rim radius, are only suitable to a limited extent for pressing and, in particular, for deep-drawing processes, since there are different and asymmetrical curvature profiles for shapes for non-circular container cross sections, which together with the manufacturing-related strength asymmetries of a usually rolled sheet can lead to deformation anomalies. This can include wrinkles, dents and unwanted thinning or thickening in the starting material that arise during the forming process. Therefore, such floors are manufactured in complex manual molding processes or are assembled from prefabricated sub-elements.
- An end floor area composed of partial elements for a transport container is, for example, from EP 0 399 099 A known.
- Such container bottoms cannot be manufactured with simple deep-drawing processes (one-stage) or only with the above-mentioned quality defects.
- Multi-stage deep-drawing processes in which the desired geometry is made in several different tools and several process steps Forming step by step may be suitable, but only economically sensible for large series quantities (several thousand).
- Thermoforming processes for metallic container components are from the US 2008/0148799 A1 as well as from the EP 0 970 764 A1 known.
- the container base according to the invention has a curved spherical cap region with a radius of curvature R, a connecting contour which has a first radius of curvature in a first contour section and a second radius of curvature in a second contour section , wherein the first radius of curvature is greater than the second radius of curvature and between the circumferential contour and the calotte region a brim region surrounding the dome region and following the connection contour is formed, which has a first brim section with a first brim radius and a second brim section with a second brim radius, the first brim radius is larger than the second brim radius.
- the variation of the brim radius in a single contour section with a flatter curvature optimizes the deformation conditions for a deep-drawing process in this area.
- the material flow is improved in such a way that a largely wrinkle-free transition of all deformed surfaces into one another can be achieved in a single deep-drawing process, in which a corresponding blank (blank) with the help of a deep-drawing tool, which contains a stamp, a drawing frame and a hold-down device and, if necessary, has a counter shape.
- the stamp geometry corresponds to the container base geometry.
- deep drawing denotes both the actual deep drawing, in which the sheet thickness above the drawn part remains approximately constant, that is, the surface of the board is equal to the surface of the drawn part (container bottom), as well as the so-called stretch drawing, in which the The drawn part is shaped by a (partial) surface enlargement at the expense of the sheet thickness.
- the shape according to the invention also permits improved pressure resistance (internal overpressure which acts on the concave wall region of the container base), which increases the usability of such a container base for a pressure container.
- the voltage transitions in the flatly curved, cylindrical jacket area must be made smoother.
- FIG. 1 One embodiment is illustrated in accordance with the present invention. Before a detailed description follows, general explanations of the embodiments follow.
- arched is used in connection with this application to mean that it is a multiaxially curved surface, like a spherical shape. While the term “curved” denotes a uniaxial surface curvature, like a cylindrical shape.
- the brim surface has (possibly different) curvatures.
- the curvature which is indicated by the so-called brim radius or the curvature of the rim.
- This brim radius lies in a section plane that runs normal to the brim or floor surface and indicates the curvature of the brim area in this plane.
- the brim surface describes a torus or a partial surface of a torus (enveloping surface which forms a circular contour when it is displaced along a ring running through its center).
- this curve defining the torus is not circular, but instead has areas with different curvatures - as is the case with non-circular container or floor cross-sections - then the body produced by the brim radius is on the one hand with the one curvature corresponding to the brim radius provided and on the other hand curved according to the curvature of the generatrix.
- first (less curved brim section) is arranged between two more curved brim sections, in such a way that the brim radius does not change abruptly, but rather a transition section is formed between the first brim section and the second brim section, in which the first brim radius merges into the second brim radius.
- This measure further contributes to the fact that floor structures that are optimized in terms of printing technology and production technology can be formed.
- a third brim section is provided along the second (more curved) contour section, which has a third brim radius.
- this third brim radius is formed equal to the second brim radius.
- the third rim radius can also be made smaller than the second rim radius.
- transition sections are also formed in each case between a third brim section and an adjacent second brim section, so that here also differently curved brim surfaces merge smoothly into one another.
- connection area is formed in the first, second and / or third brim section, which has a connection contour that describes a circular cylinder section, in particular an oblique circular cylinder section.
- a connection area can be formed in the corresponding deep-drawing process by appropriate training on the pressing tool.
- a connecting pipe to be connected there also only needs to be cut off at an angle, without having to have a complex cutting contour, which would be necessary if it were connected directly to the container brim.
- connection area can be shaped in such a way that it is suitable for both a horizontal (with a horizontal longitudinal axis) and a standing container (with a vertical longitudinal axis).
- the connection area is then to be shaped such that it starts tangentially from the connection contour - possibly with appropriate fillets - into the collar or rim of the tank bottom (horizontal arrangement of the tank) and / or tangentially into the lowest point of the spherical cap area of the tank bottom ( with the container upright). If a connection is to be provided, the connection area need only be cut out in the area of the connection contour and following it. A corresponding obliquely cut pipe can then be connected there.
- the first brim radius is 1.5 to 3 times the second brim radius, in other designs it is 1.8 to 2.5 times, and there are also designs in which it is Is 2 times the second brim radius.
- This measure makes it possible to realize containers with different flatness (e.g. oval, double-shelled or box-shaped) and a wide variety of container geometries, which are optimized either in terms of the available space or the pressure resistance.
- first rim radius and the radius of curvature are in a ratio of 1:10 to 1:50, in other versions a range from 1:20 to 1:30 is provided and in other versions there is a ratio of 1 : 25.
- the relationships between the radius of curvature (the calotte) and the brim radius with regard to different printing requirements or with regard to volume optimization should be formed.
- shape or curvature depth T (corresponds to the "floor height" from the connection contour to the calotte apex) is 3 to 5 times the second rim radius, in particular 3.5 to 4 times and especially 3, 75 times.
- connection diameter (or the connection diameter ratios) can be varied by cutting a correspondingly manufactured raw floor at different heights (different height of the board), so that the remaining area of the board is of different lengths / heights. With a short shelf area, the diameter is correspondingly smaller, with a long shelf area, correspondingly larger.
- Container bottoms according to the invention are formed from a ductile, deformable metal material, in particular from a customary stainless steel material (e.g. in the qualities 1.4301, 1.4404; 1.4571).
- the diameter ratio (large to small diameter; width to height when the container is lying down; width to depth when the container is standing) is 2: 1 to 3.5: 1, in particular 3: 1.
- Another aspect of the invention relates to a deep-drawing tool, in particular a stamp, for producing a container base according to the invention.
- Another aspect relates to a method for producing a container base according to the invention, which has the following steps: providing a sheet metal blank (plate), deforming the sheet metal blank using a deep-drawing tool to form an intermediate deep-drawing product, and trimming an intermediate deep-drawing product along a peripheral contour, the peripheral contour being formed by a plurality of contour cuts to be carried out in succession becomes.
- This process helps to carry out the desired connection contour or circumferential contour of the container bottom with repeat accuracy and with little tolerance.
- the method can also include the formation of a connection opening in the deep-drawing intermediate product or in the container bottom.
- FIG. 1 and 2nd show a first exemplary embodiment of a container base 1 according to the invention, which has a curved spherical cap region 2 with a radius of curvature R.
- the dome area 2 merges via a brim area 3 into an on-board area 4 which ends in a connection contour 5 which corresponds to the cross-section of the container.
- connection contour 5 has a flatly curved first contour section 6 with a first radius of curvature r 1 in the apex and bottom region.
- the two first contour sections 6 are connected to one another via second, more curved contour sections 7 in the flank regions, which have a radius of curvature r 2 , the connecting contour 5 running smoothly over the first and second contour sections 6 and 7.
- the brim area 3 surrounding the calotte area 2 adjoins the calotte area 2 with its calotte-side edge 8 and borders with the connection-side edge 9 on the rim area 4, which is optionally formed between the brim area 3 and the connection contour 5.
- the edge 9 on the connection side also forms the connection contour 6.
- the brim area 3 has a first brim section 10 with a brim radius r 1k1 in the area of the first contour sections 6.
- This first brim section 10 merges via an optional transition section 11 into a second brim section 12, which has a second brim radius r 1k2 .
- the second brim section 12 borders a third brim section 13, which runs in the region of the second contour section 7, and has a third brim radius r 2k3 .
- the optional on-board area 4 running between the brim area 3 and the connecting contour 5 comprises a frustoconical (frustoconical) on-board area 14 and an adjoining cylindrical on-board area 15 which ends in the connecting contour 5.
- a frustoconical rim area 14 is provided or a cylindrical rim area 15 directly adjoins the brim area 3.
- a frustoconical rim area 14 is provided in the area of the first contour section 6, which merges into a cylindrical rim area 15 in the area of the second contour section or vice versa.
- depressions 16 are embossed, which are provided for handling the container or the container base 1 during manufacture.
- connecting pieces for example connecting bolts, threaded bolts etc.
- connecting pieces can be provided in a defined position through which the container bottom 1 can be fixed in a defined position in a handling device.
- connection area 17 is formed in the sole area, which has a connection edge 18, the contour of which describes a flat circular cylinder section and is used to connect an obliquely cut-off connection tube 19 (indicated by dashed lines) that can be welded along the connection edge 18.
- the connection area 17 is designed in such a way that the connection sole 20 is in the same plane with the sole of the cylindrical rim area 15 or the cylindrical container section 31 adjoining the connection contour 5 (see Fig. 5 ) runs. Complete emptying of the entire container 30 can thus be achieved.
- connection area 17 ′ which is both for a standing (see Fig. 6 ) as well as for a lying arrangement (cf. Fig. 7 ) a container or the container bottom 1 is suitable.
- the connection area 17 ′ is shaped in such a way that it has a connection base 20 that runs in line with the container base, and a connection base 20 ′ that runs tangentially into the low point T of the spherical cap area 2.
- the connection area 17 ′ also ends here in a connection edge 18, the contour of which corresponds to a straight cylinder section.
- a removal tube can thus be connected to this connection area 17 ′ along the tube axis 21 (lying container, similar course as in FIG Fig.
- connection areas 17, 17 ' are each optionally formed in the container bottom 1.
- Fig. 5 shows a cylindrical container 30 which has a cylindrical jacket section 31 corresponding to the connection contour 5, the upper and lower ends of which are each closed with a container base 1.
- the two connection contours of the container are each welded to the connection contour 5 of the container bottoms 1 by means of a butt seam. In other embodiments, the container bottom can be pushed into the container section 31 or plugged onto it. The connection is then made via one or two so-called fillet welds.
- Fig. 5 shows a standing container, the longitudinal axis 32 of which extends vertically.
- the container has two reinforcement rings 33 which surround the container section 31 and are welded to it.
- the lower container base 1 is connected to an annular base 34, which serves as a base.
- Fig. 6 shows a lying container arrangement, in which a container 30 is also provided, the longitudinal axis 32 of which, however, runs horizontally here.
- the container is connected at its ends to a frame structure 35 via ring base 34.
- Frame structure 35 and container 30 form a tank container unit which is suitable for the transport and storage of liquids.
- Fig. 7 shows a deep-drawing intermediate product 36 which is produced in the production of a container base 1 according to the invention.
- a flat sheet metal blank round blank
- this is deformed by means of a stamp which corresponds to the inner shape of the container base 1.
- the edge 37 of the board is fixed on a deep-drawing frame by means of a hold-down device and the shape of the container bottom is formed by pressing the stamp into the board.
- the remaining edge 37 on the intermediate deep-drawing product 36 is then removed in one or more cutting processes along the cutting lines 38, so that the connection contour 5 is finally formed on the container base 1.
- contour cuts 39, 40 can also be provided during production, which are provided for example for connecting a pipe or a fitting.
- the step can be provided that a connection opening 39, 40 is provided on the deep-drawing intermediate product 36.
- the depressions 16 or the connection areas 17/17 ' can be stamped either in the actual deep-drawing process during the molding of the container base 1 or the deep-drawing intermediate product 36 or in a second step in which the deep-drawing intermediate product 36 is processed accordingly with a further stamping tool.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Claims (11)
- Fond de conteneur (1) pour un conteneur (30), fabriqué selon un procédé d'emboutissage profond, comprenant :un contour de raccordement (5) présentant dans une première partie de contour (6) un premier rayon de courbure (r1) et dans une seconde partie de contour (7) un second rayon de courbure (r2),où le premier rayon de courbure (r1) est plus grand que le second rayon de courbure (r2), caractérisé en ce que le fond de conteneur (1) présente une partie de calotte (2) bombée avec un rayon de courbure (R), etune zone de bord (3) qui entoure la partie de calotte (2) et suit le contour de raccordement (5) est formée entre le contour de raccordement (5) et la partie de la calotte (2), comprenant une première partie de bord (10) ayant un premier rayon de bord (r1k1) et une seconde partie de bord (12) ayant un second rayon de bord (r1k2) qui s'étendent le long de la première partie de contour (6),le premier rayon de bord et le second rayon de bord étant respectivement situés dans un plan de coupe qui s'étend perpendiculairement à la surface de bord respectivement surface de fond et indique la courbure de la zone de bord dans ce plan, etle premier rayon de bord (r1k1) étant plus grand que le second rayon de bord (r1k2).
- Fond de conteneur (1) selon la revendication 1, dans lequel la première partie de bord (10) est disposée entre deux secondes parties de bord (12) et une partie de transition (11) est formée respectivement entre le premier et les secondes parties de bord (10 ; 12), dans laquelle le premier rayon de bord (r1k1) rejoint le second rayon de bord (r1k2).
- Fond de conteneur (1) selon la revendication 2, dans lequel des surfaces de bord sont formées dans la première partie de bord (10), dans la seconde partie de bord (12) et dans la partie de transition (11), lesquelles surfaces de bord se rejoignent de manière continue.
- Fond de conteneur (1) selon la revendication 1, 2 ou 3, dans lequel une troisième partie de bord (13) ayant un troisième rayon de bord (r2k3) est formée le long de la seconde partie de contour (7).
- Fond de conteneur (1) selon l'une des revendications précédentes, dans lequel une zone de raccordement (17 ; 17') est formée dans la première, seconde et/ou troisième partie de bord (10; 12; 13), laquelle zone de raccordement présente un bord de raccordement (18) qui décrit un segment de cylindre circulaire.
- Fond de conteneur (1) selon l'une des revendications précédentes, dans lequel le premier rayon de bord (r1) est de une fois et demie à trois fois, de préférence de 1,8 à 2,5 fois et en particulier deux fois le second rayon de bord (r2).
- Fond de conteneur (1) selon l'une des revendications précédentes, dans lequel le rayon de courbure (R) et le premier rayon de courbure (r1) sont dans un rapport de 2,6:1 à 1:1, de préférence de 1,5:1 à 1:1 et en particulier de 1,2:1 à 1:1 l'un par rapport à l'autre.
- Fond de conteneur (1) selon l'une des revendications précédentes, dans lequel le premier rayon de bord (r1k1) et le rayon de courbure (R) sont dans un rapport de 1:10 à 1:50, de préférence de 1:20 à 1:30 et en particulier de 1:25 l'un par rapport à l'autre.
- Fond de conteneur (1) selon l'une des revendications précédentes, dans lequel une zone de bord tronconique et/ou cylindrique (14 ; 15) est formée entre le contour de raccordement (5) et la zone de bord (3).
- Procédé de fabrication d'un fond de conteneur (1) selon l'une des revendications 1 à 9 comprenant :- la fourniture d'une tôle ronde- la déformation de la tôle ronde au moyen d'un outil d'emboutissage profond pour la fabrication d'un fond de conteneur selon l'une des revendications 1 à 9 en un produit intermédiaire d'emboutissage profond (36)- le découpage d'un produit intermédiaire d'emboutissage profond (36) le long d'une ligne de découpe (38).
- Procédé selon la revendication 10, comprenant- la formation d'une ouverture de raccordement (39, 40) dans le produit intermédiaire d'emboutissage profond (36), et ou- le façonnage d'une zone de raccordement (17 ; 17') présentant un bord de raccordement (18) qui décrit un segment de cylindre circulaire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15760105T PL3183189T3 (pl) | 2014-08-19 | 2015-08-19 | Dennica pojemnika jak i sposób jej wytwarzania |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014111810.3A DE102014111810B3 (de) | 2014-08-19 | 2014-08-19 | Behälterboden sowie Werkzeug und Verfahren zu dessen Herstellung |
| PCT/EP2015/069051 WO2016026897A1 (fr) | 2014-08-19 | 2015-08-19 | Fond de contenant et outil et procédé de fabrication dudit fond |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3183189A1 EP3183189A1 (fr) | 2017-06-28 |
| EP3183189B1 true EP3183189B1 (fr) | 2020-03-18 |
Family
ID=54065324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15760105.5A Active EP3183189B1 (fr) | 2014-08-19 | 2015-08-19 | Fond de contenant et procédé de fabrication dudit fond |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US10150611B2 (fr) |
| EP (1) | EP3183189B1 (fr) |
| AU (1) | AU2015306180A1 (fr) |
| DE (1) | DE102014111810B3 (fr) |
| PL (1) | PL3183189T3 (fr) |
| WO (1) | WO2016026897A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014111810B3 (de) | 2014-08-19 | 2016-02-18 | WEW Westerwälder Eisenwerk GmbH | Behälterboden sowie Werkzeug und Verfahren zu dessen Herstellung |
| USD858213S1 (en) * | 2017-07-18 | 2019-09-03 | Jingdong Wu | Lunch box |
| CN119328011B (zh) * | 2024-11-19 | 2025-09-19 | 中航西安飞机工业集团股份有限公司 | 一种小转角、窄锥形变曲率蒙皮拉深失稳控制方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3780901A (en) * | 1972-01-14 | 1973-12-25 | Hahn & Clay | Pin-type vessel closure connector |
| US3910447A (en) * | 1974-03-01 | 1975-10-07 | Combustion Eng | Vessel restraint device |
| DE8906421U1 (de) * | 1989-05-24 | 1989-08-24 | Zeppelin-Metallwerke Gmbh, 7990 Friedrichshafen | Druckbehälter |
| US6059372A (en) | 1997-12-09 | 2000-05-09 | Composite Structures, Inc. | Hopper bottom trailer |
| US6401983B1 (en) | 1997-12-09 | 2002-06-11 | Composite Structures, Inc. | Bulk cargo container |
| EP0970764B1 (fr) * | 1998-01-29 | 2009-03-18 | Amino Corporation | Appareil de formage de plaques sans matrice |
| DE20005521U1 (de) * | 2000-03-28 | 2000-10-05 | Chemowerk GmbH Fabrik für Behälter und Transportgeräte, 71384 Weinstadt | Stehender Flachbodentank, doppelwandig, in querovaler Form |
| JP4908763B2 (ja) * | 2005-02-04 | 2012-04-04 | 本田技研工業株式会社 | 塗装鋼板の成形方法 |
| WO2009070914A1 (fr) * | 2007-11-29 | 2009-06-11 | Pu Xiao | Silo composite pour matériau en poudre |
| DE102014111810B3 (de) | 2014-08-19 | 2016-02-18 | WEW Westerwälder Eisenwerk GmbH | Behälterboden sowie Werkzeug und Verfahren zu dessen Herstellung |
| US9566892B2 (en) * | 2014-11-10 | 2017-02-14 | Heil Trailer International, Co. | Multi-material tank trailer body |
-
2014
- 2014-08-19 DE DE102014111810.3A patent/DE102014111810B3/de active Active
-
2015
- 2015-08-19 WO PCT/EP2015/069051 patent/WO2016026897A1/fr not_active Ceased
- 2015-08-19 AU AU2015306180A patent/AU2015306180A1/en not_active Abandoned
- 2015-08-19 EP EP15760105.5A patent/EP3183189B1/fr active Active
- 2015-08-19 US US15/504,699 patent/US10150611B2/en active Active
- 2015-08-19 PL PL15760105T patent/PL3183189T3/pl unknown
-
2018
- 2018-10-31 US US16/176,671 patent/US20190062043A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014111810B3 (de) | 2016-02-18 |
| US20170259990A1 (en) | 2017-09-14 |
| US20190062043A1 (en) | 2019-02-28 |
| US10150611B2 (en) | 2018-12-11 |
| EP3183189A1 (fr) | 2017-06-28 |
| PL3183189T3 (pl) | 2020-09-07 |
| AU2015306180A1 (en) | 2017-03-09 |
| WO2016026897A1 (fr) | 2016-02-25 |
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