EP0358960A1 - Récipient avec bouchon - Google Patents

Récipient avec bouchon Download PDF

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Publication number
EP0358960A1
EP0358960A1 EP89114984A EP89114984A EP0358960A1 EP 0358960 A1 EP0358960 A1 EP 0358960A1 EP 89114984 A EP89114984 A EP 89114984A EP 89114984 A EP89114984 A EP 89114984A EP 0358960 A1 EP0358960 A1 EP 0358960A1
Authority
EP
European Patent Office
Prior art keywords
container according
pipe socket
screw cap
socket
cover
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.)
Withdrawn
Application number
EP89114984A
Other languages
German (de)
English (en)
Inventor
Bernd Büdenbender
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0358960A1 publication Critical patent/EP0358960A1/fr
Withdrawn legal-status Critical Current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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/40—Making outlet openings, e.g. bung holes
    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/08—Threaded or like caps or cap-like covers secured by rotation engaging a threaded ring clamped on the external periphery of the neck or wall
    • B65D41/083—Threaded or like caps or cap-like covers secured by rotation engaging a threaded ring clamped on the external periphery of the neck or wall engaging a bung-ring clamped on the neck or in the wall
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0305—Bosses, e.g. boss collars

Definitions

  • the invention relates to a container with a fuselage and, with this firmly and tightly connected, a bottom and a lid, in which the lid has at least one filling opening equipped with a bung, which can be screwed onto a thread of the bung by means of a sealing ring Screw cap can be closed liquid and gas tight.
  • sheet pans made of relatively thin sheet metal are widely used and can be used as barrels for different liquid or pourable filling goods, but they can also be designed as beverage kegs, beer kegs, kegs, tanks or other containers.
  • a disadvantage of drop tests and the corresponding stresses in operation is that rigid areas, flanges or pipe connections are connected to areas of the comparatively flexible cover made of thin sheet metal, so that locally excessive stresses can occur in the connection area thereof and thus an additional risk the connection and the required leak protection.
  • the possibly required introduction of sealing rings in the connection between the cover and the bung not only brings additional risk to the seal due to additional components, conventional elastic sealing rings are not resistant to all possible fillers of the vessel, so that additional consideration of the intended content of the Container is to be taken and there are additional failure options, especially if the container is often reused.
  • a planned reuse it has the disadvantage that a number of solvents and cleaning agents cannot be used when cleaning the vessel with regard to the sealing rings that seal the bung and, in particular, cleaning processes that use higher temperatures should be avoided.
  • the invention is based on the object of developing a generic container such that a bung or threaded connector enclosing the filling opening for receiving a sealingly closing screw cap with minimal effort can be created, which is securely sealed and local overstressing largely exclusively connected to the cover.
  • the filling opening being delimited by a pipe socket pushed out upwards from the cover, which is formed in one piece with the cover from the cutting of the cover from the material to be formed in the region of the filling opening to be formed, and by the pipe socket having an external thread is provided for receiving the screw cap and a sealing surface for supporting the sealing ring of the screw cap is assigned to it.
  • the material of the cover above the filling opening is expediently guided in one piece via a contact area for the sealing ring of the screw cap up to the pipe socket equipped with the thread; on the other hand, it is also possible to arrange the support area provided for the sealing ring at the free end of the pipe socket.
  • the bung is either created solely by reshaping material already present in the cover or only simple additional parts that can be manufactured within wide tolerances are used for any additional reinforcement that may be desired, with the one-piece construction up to the sealing pad Leakage possibilities up to the contact areas of the sealing ring are excluded.
  • the operations to be carried out during the forming process are relatively easy to carry out.
  • FIG. 1 the view of the upper area of a container 1 is shown in section in a partial area, the cylindrical, broken-off hull 2 of which is closed at the top by a cover 3, which is mechanically securely and tightly connected to the hull 2 by a fold 4.
  • the lid 3 usually has two filling openings of different diameters; the filling opening 5 provided for the actual filling is often created with a width of 2 ", while a further opening, which essentially serves for ventilation, is designed with a width of 3/4".
  • baffles 6, 7, which are equipped with an external thread and can be closed in a liquid-tight and gas-tight manner by means of a screw-on screw cap and a seal.
  • FIG. 1 An enlarged section of the cover 3 of FIG. 1 with an integrally formed bung 7 in FIG. 2 is shown.
  • a filling opening 5 is worked into the cover 3 by first punching out a central area of the sheet metal of the cover. Subsequently, a hat-shaped profile is pressed out of the plane of the cover centrally to this central region, so that a pipe socket 8 is integrally formed on the cover with the filling opening as the base surface. which merges into an inwardly projecting ring surface.
  • This ring surface can be reshaped, as the following figures show.
  • a pipe socket 8 is pressed out of the plane of the cover, in which an external thread 9 is formed, in one piece with the cover 3, adjoining the filling opening 5 formed therein.
  • the free end of the pipe socket 8 is equipped with an inwardly shaped bead 10, so that on the one hand sharp free-standing edges are avoided and on the other hand an annular contact surface for sealing a screw cap is already created here.
  • the pipe socket is therefore axially compressed by a pressing process before the thread is formed, so that although the height of the pipe socket is reduced, the material thickness of the same is advantageously increased.
  • a further developed embodiment of such a bung 7 is shown, in which the foot region of the pipe socket 8 is expanded as a bead 12.
  • a bead can, as shown in Fig. 3, be designed in a step-like manner.
  • the annular top surface of the bead 12 can also be used as a sealing pad.
  • a stiffened, and thus highly stressable embodiment of a bung 7 can be achieved according to FIG. 4 by the pipe socket, which is pressed out of the filling opening 5 of the cover 3 in one piece with it, initially directed upwards in the course of an inner socket 14 and its free end is pushed over a forming region 15 by 180 o to the outside, so that this end portion surrounds the outer sheath 16 to the inner socket 14 with spacing.
  • the external thread 9 provided for receiving a screw cap is molded into the outer jacket 16, and the annular surface of the shaping area serves as a support for the sealing ring of a final screw cap.
  • the external thread 9 of the outer jacket 16 is arranged outside the sealed area of the vessel, so that any thread defects, hairline cracks in the thread or the like do not affect the tightness of the container term and the screw cap engaging in the external thread has an additional stiffening effect, but attacks outside the sealing surfaces, so that they are not impaired even when deformed.
  • the forming area is provided with a ring surface normal to the axis, to which the inner connecting piece 14 and the outer jacket 16 are connected on both sides via curvatures. It is also possible to round off the forming area with a continuous radius of curvature.
  • a bung 7 is shown, in which the inner socket 14 of FIG. 4 is additionally equipped with a bead 17, so that the free end of the outer jacket 16 is able to be supported on the jacket of this bead and additional stiffening is achieved .
  • the forming area can be designed with a round profile or with an elongated profile, to which two quarter-circle arches follow, and can be used as a support for the sealing ring of a screw cap.
  • the forming area 15 is designed with such a small radius of curvature that the outer jacket 16 rests directly on the inner socket 14 and, for example when the external thread 9 is pressed in, this also fits into the inner socket 14 impresses.
  • the zones of the inner connecting piece 14 and the outer jacket 16 adjoining the shaping area 15 are drawn inwards to form a conical end area 18.
  • the contact surface with a small contact surface and thus high contact pressure can Forming area can be used, but it is also possible to use the outer surface of the conical end area as a support surface in connection with diagonally held sealing rings.
  • a bead 17 surrounding the filling opening 5 is first molded in one piece with the lid 3, and a conical extension 19 is formed from the inner upper end of the bead, which merges via a forming area 15 into an outer jacket 16 equipped with the external thread 9.
  • the bead 17 stiffens both the area of the cover 3 surrounding the filling opening 5 and the inner socket 14, and at the same time the jacket of the bead 17 provides an opportunity to support the free end of the outer jacket 16.
  • the conical extension 19 allows a relatively extensive sealing when screwing on a screw cap even when the screw thread is slightly tightened by increasing the contact forces due to the wedge effect of the conical extension 19.
  • Support and stiffening can not only be achieved by embossing beads; As shown in FIG. 9, it is also possible to additionally stiffen pipe sockets with simple, inexpensive and relatively wide tolerance rings.
  • Such reinforcement rings can be connected to the pipe socket, for example by welding. In the present case, it has proven useful to slide the reinforcement ring 20 over the pipe socket 8 formed from the cover 3 and then to the free outer area of the To form the pipe socket down to an outer jacket 16 so that the forming region 15 engages over the reinforcing ring and additionally the outer jacket 16 engages around it, so that a secure hold of the reinforcing ring is ensured even without special welding processes.
  • the external threads according to FIGS. 1 to 9 can be introduced by customary thread forming processes. So it is first possible to incorporate such an external thread by means of cutting jaws or by turning operations using a cutting steel. However, it has proven useful to form such external threads by rolling, pressing in, swirling or the like known processes for non-cutting thread forming in the pipe socket 8 or its outer jacket 16. In such pressing, pressing, rolling or rolling processes, the threads with the required depth of the thread can be introduced even with relatively small sheet thicknesses of the cover, and this advantageously has the effect that the upwardly projecting pipe sockets attack the required tools do not complicate.
  • the upper free end 24 of the pipe socket 23 is folded outwards so that at least the end region of which is pre-tensioned on the upper flank 25 of the threaded ring 22 such that the threaded ring is clamped in the cover 3 between the deformed end 24 and the root region of the pipe socket 23.
  • the adhesion of the threaded ring can be improved in that its upper flank 25 and / or its lower flank 26 are roughened or are even provided with slight depressions or elevations which provide better adhesion and, in particular, protection against rotation when the upper free end 24 of the pipe socket is molded on 23 effect.
  • such a separate threaded ring which is not to be connected directly to the cover 3, can be manufactured relatively easily as a separate component, and the connection to the pipe socket 23 can also be easily accomplished. It proves advantageous here that when screwing on a closing and sealing threaded cap, the seal lies on the flange-like area of the deformed free end 24, so that a secure seal is achieved in one piece from the container: the lid 3 and the pipe socket 23 and its upper one Free end 24 merge into one another so that absolute tightness is maintained up to the sealing area and is continued in this in a known manner by a sealing ring.
  • FIG. 11 A modified version is shown in FIG. 11.
  • the upper flank of the threaded ring 22 equipped with the external thread 21 is provided with a groove 27 which almost or completely receives the deformed upper free end 24 of the pipe socket 23.
  • the flange 29 formed here almost or completely enters the groove 27 and serves as a sealing surface for the sealing ring of a closing screw cap.
  • the lower flank 26 of the threaded ring 23 is provided with a groove 28, which securely supports the threaded ring on the Cover 3 allows, even if the transition from cover 3 to pipe socket 23 should be carried out with a larger radius of curvature.
  • FIG. 12 A similar arrangement is shown in FIG. 12, in which the upper free end of the pipe socket 23 is formed up to a conical, outwardly sloping ring 30 and engages over the correspondingly conically shaped upper end face of the threaded ring 22 equipped with a groove.
  • FIG. 13 Another variant is shown in which the upper free end of the pipe socket 23 is shaped into an outwardly rising conical ring 31 which engages over the correspondingly shaped upper flank of the threaded ring 22.
  • Both the conical ring 30 and the conical ring 31 each serve as a contact surface coming into contact with the sealing ring of a screw cap to be applied, so that the advantages of a conical contact surface can also be used here.
  • suitable screw caps are shown in the following figures.
  • 15 shows such a screw cap 32 in a top view.
  • Your bottom 33 is equipped with a recess 34 for engaging tools, which at the same time stiffens the bottom by profiling.
  • a tubular collar 36 provided with an internal thread 35 is connected in one piece to the side of the base 33 and is intended for screwing on such a screw cap onto bung according to FIGS. 1 to 13 and is received by its external thread 9 becomes.
  • the ring-shaped area surrounding the recess 34 of the bottom 33 of the screw cap 32 is equipped with a sealing ring 37 which, in the form shown, can cooperate, for example, with contact areas of the bung 7 of FIGS. 1 to 12.
  • a further screw cap is created, the tubular collar 36 of which runs downward into a flange 39 which, for the secure positioning of the sealing ring 37, can be equipped with an attachment 40 which laterally encompasses it.
  • Such a screw cap is to be designed with a clear height which at least slightly exceeds that of the associated pipe socket 8, and one is achieved here Sealing directly on the surface of the cover 3 or, in the case of beads 12, a seal on the ring surface. In these cases, the thread connection, which may not be completely sealed, is accommodated within the sealed container space and cannot impair the tightness of the container.
  • FIGS. 19 and 20 Further variants of screw caps are shown in FIGS. 19 and 20.
  • a conical area 41 adjoins the bottom 33 of a screw cap 32, which is equipped with a sealing ring 37 and for sealing a bung 7 of FIG. 7 with a conical end area 18 or a bung 7 of FIG. 12 with a conical one Ring 30 can be used.
  • a corresponding adaptation to the conical extension 19 of the bung 7 of FIG. 8 or of the conical ring 31 of FIG. 13 can be achieved according to FIG. 20, after which the bottom 33 of a screw cap 32 merges into a conical region 42 that rises outwards , whose inner surface is equipped with the sealing ring 37.
  • the invention is capable of a number of other variations.
  • the sealing rings 37 of the screw caps 32 and the sealing surfaces of the pipe sockets 8 or 23 can be finished, in particular ground, so that separate elastic seals can be dispensed with and the seal is effected solely via metallic surfaces that have practically no abrasion.
  • transition and connecting areas in particular from more flexible elements, such as the cover 3, to rigid elements, such as the previously known, thick-walled bungs, are missing, so that local overloads are avoided in the event of overstressing. It has also been shown to be advantageous that, with the one-piece molding upwards, optimal clear widths of the filling opening are achieved, which considerably facilitate filling and emptying of the container.
  • bung-type containers the bungs of which can be produced with little material expenditure
  • the bungs can also be carried out with optimal clear width without noticeable additional costs, so that filling and emptying processes, in particular with highly viscous container contents, are facilitated and also There is an opportunity to introduce agitators to support the removal if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP89114984A 1988-08-13 1989-08-13 Récipient avec bouchon Withdrawn EP0358960A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3827551 1988-08-13
DE3827551 1988-08-13
DE3829230 1988-08-29
DE3829240 1988-08-29
DE3829240 1988-08-29
DE3829230 1988-08-29

Publications (1)

Publication Number Publication Date
EP0358960A1 true EP0358960A1 (fr) 1990-03-21

Family

ID=27198101

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89114984A Withdrawn EP0358960A1 (fr) 1988-08-13 1989-08-13 Récipient avec bouchon
EP89114985A Expired - Lifetime EP0355647B1 (fr) 1988-08-13 1989-08-13 Récipient avec bondon

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89114985A Expired - Lifetime EP0355647B1 (fr) 1988-08-13 1989-08-13 Récipient avec bondon

Country Status (6)

Country Link
US (3) US5016775A (fr)
EP (2) EP0358960A1 (fr)
JP (1) JPH02180159A (fr)
CA (1) CA1331959C (fr)
DE (1) DE58907275D1 (fr)
ES (1) ES2052843T3 (fr)

Cited By (1)

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Also Published As

Publication number Publication date
CA1331959C (fr) 1994-09-13
EP0355647B1 (fr) 1994-03-23
ES2052843T3 (es) 1994-07-16
JPH02180159A (ja) 1990-07-13
EP0355647A3 (en) 1990-12-12
US5016775A (en) 1991-05-21
DE58907275D1 (de) 1994-04-28
US5052576A (en) 1991-10-01
US5190181A (en) 1993-03-02
EP0355647A2 (fr) 1990-02-28

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