EP4306714A1 - Dispositif et procédé de formage et de pressage d'une pièce de goulot d'un récipient contenant des fibres - Google Patents

Dispositif et procédé de formage et de pressage d'une pièce de goulot d'un récipient contenant des fibres Download PDF

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Publication number
EP4306714A1
EP4306714A1 EP23161681.4A EP23161681A EP4306714A1 EP 4306714 A1 EP4306714 A1 EP 4306714A1 EP 23161681 A EP23161681 A EP 23161681A EP 4306714 A1 EP4306714 A1 EP 4306714A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
mold
longitudinal axis
mouth piece
radially movable
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.)
Pending
Application number
EP23161681.4A
Other languages
German (de)
English (en)
Inventor
Jochen Hirdina
Frank Winzinger
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.)
Krones AG
Original Assignee
Krones AG
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 Krones AG filed Critical Krones AG
Publication of EP4306714A1 publication Critical patent/EP4306714A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/59—Shaping sheet material under pressure
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • D21J3/02—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of rings
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • D21J3/10—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/002—Construction of rigid or semi-rigid containers having contracted or rolled necks, having shoulders

Definitions

  • the invention relates to a device and a method for forming and pressing a mouth piece of a container comprising fibers according to the independent claims.
  • a mouthpiece made of a different material is subsequently added to the container made from pulp.
  • the mouthpiece can be formed from pulp by inflating a balloon in the container.
  • the object of the invention is to provide a device and a method which enable the formation of a dimensionally stable mouth piece of a container containing fibers, for example pulp.
  • the device according to the invention for forming and pressing a mouth piece of a container comprising fibers, for example pulp comprises a mold for surrounding at least an outer surface of a mouth region of the container in which the mouth piece is to be formed, the mold comprising a structure for forming the mouth piece.
  • the device comprises a mandrel, in particular for insertion into an opening, at least temporarily within the mouth region, and movement means for executing a relative movement between the mold and the mandrel in order to reduce a distance from the mold and the mandrel and thus for shaping and pressing the mouth piece.
  • the fibers can, for example, be at least partially vegetable fibers, for example comprising wood and/or pulp (or cellulose). Pulp may comprise a suspension of water and fibers, for example pulp, such as paper and/or wood fibers.
  • the mouth area and the mouth piece to be formed and pressed in the mouth area can be viewed as belonging to the container.
  • the mouth area can be integral with the container and comprise the same material as the container.
  • the mouth area can have an inner diameter of 0.1 cm to 10 cm, for example 1.5 cm up to 6 cm. In the case of barrels, the mouth area can have an inner diameter of up to one meter.
  • the mandrel can already be arranged in the opening of the mouth region when it is formed or can even contribute to the formation of the opening or, alternatively, can only be introduced into the opening after the opening has been formed.
  • the muzzle area can be viewed as a raw version of the muzzle piece.
  • the raw version can, for example, contain no thread, no support ring and/or no latching elements.
  • a thread, a support ring and/or latching elements can be formed and pressed, for example, by means of the structure of the mold.
  • Carrying out the relative movement can mean that the shape can be designed to be movable by means of the movement means, whereas the mandrel can be designed to be stationary.
  • carrying out the relative movement can mean that the mandrel can be designed to be movable by means of the movement means, whereas the shape can be designed to be stationary.
  • the mandrel can, for example, be designed in several parts, whereby one or more of the parts can be designed to be movable.
  • carrying out the relative movement can mean that both the mold and the mandrel can be designed to be movable by means of the movement means.
  • the mandrel can, for example, be designed in several parts, whereby one or more of the parts can be designed to be movable.
  • the distance from the mold and the mandrel can be reduced by means of the moving means.
  • the movement means for executing a relative movement between the mold and the mandrel can be further designed to increase a distance from the mold and the mandrel.
  • the mold and the mandrel can be removed from each other so that the mouth piece arranged between them can be removed.
  • the mandrel can be removed from an opening in the mouth piece after the mouth piece has been completed.
  • the opening of the mouth piece may correspond to the opening of the mouth region, which may have been formed by means of the mold and the mandrel through molding and pressing.
  • a pressure during pressing can be in a range from 10,000 N/m 2 (0.1 bar) to 1,000,0000 N/m 2 (1,000 bar), for example from 100,000 N/m 2 (1 bar) to 1,000,000 N/m 2 (100 bar) or for example from 500,000 N/m 2 (5 bar) to 5000,000 N/m 2 (50 bar).
  • the shape can be made in one piece or in several parts. Accordingly, the structure can be designed in one or more parts.
  • the mandrel and the mold can comprise essentially circular cylindrical cross sections.
  • the structure can comprise a negative form of a thread and/or support ring to be formed and/or of latching elements to be formed.
  • the relative movement may include movement of the mold toward the mandrel or toward away from the mandrel.
  • the movement can be provided radially towards the mandrel or radially in the direction away from the mandrel. Radial can mean in relation to a longitudinal axis of the mandrel.
  • the relative movement may include movement of the mandrel toward the mold or toward away from the mold.
  • the mandrel can comprise a flat lateral surface.
  • the flat lateral surface can be a lateral surface of a circular cylinder.
  • the mandrel can comprise at least two radially movable jaws with flat jacket segment surfaces, for example two radially movable jaws can be provided, each of which can include a cylinder segment of approximately 180 ° or for example four radially movable jaws can be provided, each of which has a cylinder segment of can cover approx. 90°.
  • Three jaws at approx. 120° would also be conceivable. In order to ensure relative mobility of the jaws, they can extend (over their entire height) less (e.g. 0.05° to 5°) than 360°/(number of jaws) of the circumference.
  • the jaws can overlap in some areas at least at their edges in the circumferential direction.
  • the overlap can be designed like a zipper, for example, by means of several projections along the height.
  • projections of one jaw can engage between projections of the adjacent jaw. This can result in at least one, for example all, jaws extending in the circumferential direction by more than 360°/(number of jaws).
  • three jaws could be provided, each of which extends 125° in the circumferential direction.
  • the radially movable jaws can, for example, be moved radially away from a longitudinal axis of the mandrel in order to form and press the mouth piece.
  • the movable jaws When performing relative movement by means of the moving means between the mold and the mandrel to reduce the distance from the mold and the mandrel, the movable jaws can contact the mouth area and can press it against the mold so that the mouth piece can be formed and pressed.
  • the mandrel can therefore be rotated by an angular range about its longitudinal axis, wherein the angular range can be unequal to an angular size of a cylinder segment of the jaw. For example, if the cylinder segments have angular sizes of 90°, a rotation of 45°, 135°, 225° or 315° can be provided. By rotating the mandrel, burrs inside the mouthpiece can be avoided.
  • the radially movable jaws can first be moved radially towards the longitudinal axis of the mandrel before the mandrel can be rotated by an angular range about its longitudinal axis, the angular range being unequal to an angular size of a cylinder segment the cheek can be.
  • the radially movable jaws for shaping and pressing the mouth piece can again be moved, for example, radially away from a longitudinal axis of the mandrel, so that when a relative movement is carried out by means of the movement means between the mold and the mandrel, the distance from the mold and the mandrel is reduced
  • the movable jaws can contact the mouth area and press it against the mold so that the mouth piece can be shaped and pressed.
  • At least one inclined plane can be provided on a back side of the flat jacket segment surfaces and the mandrel can further comprise a spreader bar which can be moved parallel to the longitudinal axis of the mandrel, whereby an interaction of the at least one inclined plane and the spreader bar can cause a radial movement of the radially movable jaws.
  • the radially movable jaws can be moved, for example, radially away from a longitudinal axis of the mandrel by the interaction of the at least one inclined plane and the expansion bar for shaping and pressing the mouth piece.
  • the movable jaws When performing relative movement by means of the moving means between the mold and the mandrel to reduce the distance from the mold and the mandrel, the movable jaws can contact the mouth area and can press it against the mold so that the mouth piece can be formed and pressed. As described above, the mandrel can also be rotated about its longitudinal axis.
  • the mandrel can include hydraulics which, in cooperation with the radially movable jaws, can cause a radial movement of the radially movable jaws.
  • the mandrel can comprise at least one toggle lever per radially movable jaw, wherein interaction of the at least one toggle lever and the radially movable jaw can cause a radial movement of the radially movable jaw.
  • the previously described interactions between the mouth area, jaws and shape can also apply here. It can also be provided that, as described above, the mandrel can be designed to be rotatable about its longitudinal axis.
  • the device may further comprise rotation means for rotating the mandrel about its longitudinal axis.
  • a method for forming and pressing a mouth piece of a container comprising fiber, for example pulp for example using an apparatus as described above or below, includes providing a container comprising fiber, for example pulp, with a mouth region which includes an opening in which a mandrel is arranged at least temporarily, for example introducing the mandrel into the opening, surrounding at least one outer surface of the mouth region of the container in which the mouth piece is to be formed with the mold and carrying out a relative movement between the mold and the mandrel by means of the Moving means for reducing a distance between the mold and the mandrel and thereby shaping and pressing the mouth piece.
  • the method may include moving the radially movable jaws of the mandrel away from a longitudinal axis of the mandrel.
  • the Mandrel can include at least two radially movable jaws with flat jacket segment surfaces, as already described above.
  • Features as already made with regard to the mandrel with radially movable jaws in connection with the device also apply to the method since the method uses this device.
  • the method may further include rotating the mandrel through an angular range. For example, before turning, the radially movable jaws of the mandrel can be moved towards the longitudinal axis of the mandrel. After turning, the radially movable jaws of the mandrel can then be moved away from the longitudinal axis of the mandrel.
  • the method may further comprise, for example after forming and pressing the mouth piece, moving the mold away from the longitudinal axis of the mandrel and/or moving the radially movable jaws of the mandrel towards the longitudinal axis of the mandrel if the mandrel comprises radially movable jaws .
  • This allows the mold and/or the radially movable jaws to be removed from the mouth area or the shaped and pressed mouth piece.
  • the container containing fibers, for example pulp, with the shaped and pressed mouth piece can then be fed to further processing steps, for example.
  • the mandrel can be designed to transport and/or hold the mouth piece, possibly including remaining parts of the container, i.e. the entire container.
  • the mouth piece can therefore be taken over by other handling devices, for example.
  • less pressure can be exerted by the jaws.
  • the device can have a variety of similar shapes and mandrels in order to be able to produce a variety of mouth pieces at the same time.
  • the device can include precoat molds in which basic shapes of the mouth pieces to be formed are formed (without such high pressure), whereupon the basic shapes can be transported into the previously described shapes by a handling device.
  • the mouth pieces to be formed can be formed in the form according to the invention from an unshaped mass containing fibers.
  • the device can further comprise a mixer with which the mass (e.g. pulp) can be produced.
  • the device can have a pump that can pump the mass towards the mold.
  • the mold and/or the mandrel may have holes through which squeezed-out liquid can be drained away.
  • the holes can be bores or pores in the material from which the mold and/or the mandrel is made, at least in some areas.
  • channels for discharging the liquid can be arranged within the mandrel and/or the mold.
  • the Figure 1 shows a schematic semi-longitudinal section of a first embodiment of a device for forming and pressing a mouth piece 13 of a container 12 comprising fibers, for example pulp.
  • the mandrel 1 comprises a radially movable jaw 6 with a flat jacket segment surface 7, on the back of which two inclined planes 8, 9 arranged one above the other, viewed along the longitudinal axis 2 of the mandrel 1, are provided.
  • the mandrel 1 further comprises a spreader rod 3 which can be moved parallel to the longitudinal axis 2 of the mandrel 1.
  • the spreader rod 3 On its surface, which faces the jaw 6, the spreader rod 3 comprises two recesses 4 arranged one above the other as seen along the longitudinal axis 2 of the mandrel 1 , 5 on.
  • the recesses 4, 5 can also have inclined planes or rolling elements for moving along the inclined planes (not shown).
  • the mandrel 1 can only include rolling elements, recesses or inclined planes at one height. Two, three or more rolling elements, recesses or inclined planes can be arranged in the circumferential direction.
  • the mold 10 which includes a structure 11 for forming the mouth piece 13, surrounds at least an outer surface of the container 12 in which the mouth piece 13 is to be formed.
  • the distance between the jaw 6 and the mold 10 is reduced and the mouth region of the container 12 can be pressed into the structure 11 of the mold and the mouth piece 13 can thus be formed or completed .
  • the rest of the container 12 is not necessarily connected to the mouth piece in this state.
  • two threads 64, 65 of the mouth piece 13 as well as a locking ring 66 and a support ring 67 of the mouth piece 13 can be seen.
  • a tear-off ring of a closure can be placed between closure ring 66 and support ring 67, which can at least partially detach from the rest of the closure when the closed container 12 is screwed on.
  • the Figure 2 shows a schematic partial longitudinal section of a second embodiment of a device for forming and pressing a mouth piece 13 of a container 12 comprising fibers, for example pulp.
  • the mandrel 15 includes a radially movable jaw 21 with a flat jacket segment surface 20 and a rod 17, which are connected to the jaw with two toggle levers 18, 19.
  • a rod 17 is moved parallel to the longitudinal axis 16 of the rod 17 in a direction 22 into the interior of the container 12, an interaction of the toggle levers 18, 19 with the jaw 21 causes a radial movement of the radially movable jaw 21 in the direction of the mold 10 to.
  • the shape 10 and the structure 11 correspond to those from Figure 1 .
  • a tear-off ring of a closure can be placed between closure ring 70 and support ring 71, which can at least partially detach from the rest of the closure when the closed container 12 is screwed on.
  • the Figure 3A shows a schematic top view of a first arrangement of mold and mandrel for forming and pressing a mouth piece.
  • the mold comprises two parts 23, 24 which surround a mouth piece 25 of a container containing fibers, for example pulp.
  • fibers for example pulp.
  • only the four radially movable jaws 26, 27, 28, 29 of the mandrel are shown as an example.
  • a radial movement of the jaws 26-29 can be achieved, for example, by means of the elements in the Figures 1 and 2 illustrated embodiments can be carried out.
  • the jaws 26-29 are moved radially away from a longitudinal axis 34 of the mandrel. This allows the distance between the mold and the jaws 26-29 to be reduced, whereby the mouth piece 25 can be formed by pressing into a structure (not shown) of the mold.
  • the mandrel can therefore be rotated about its longitudinal axis by an angular range, the angular range being unequal to an angular size a cylinder segment of the jaws can be 26-29. By rotating the mandrel, burrs inside the mouth piece 25 can be avoided.
  • the Figure 3B shows a schematic plan view of a second arrangement of mold and mandrel for forming and pressing a mouth piece 25.
  • the radial movement of the jaws 26-29 away from the longitudinal axis 34 was stopped and the mandrel was rotated clockwise 35 by 45 ° about the longitudinal axis 34 .
  • an inner and/or outer mold 1, 23, 24, 26-29 can rotate between two pressing processes by an angle relative to the mouth piece 13, 25 to be formed, which angle is dimensioned such that at the position between two molded parts were arranged during the first pressing process, and one molded part is in contact during the second pressing process.
  • the Figure 3C shows a schematic top view of a third arrangement of mold and mandrel for forming and pressing a mouth piece. After completing the clockwise rotation 35 by 45° about the longitudinal axis 34, the jaws 26-29 are again moved radially away from the longitudinal axis 34 and the mouth piece 25 can be formed by pressing again into the structure of the mold.
  • the Figure 3D shows a schematic top view of a fourth arrangement of mold and mandrel for forming and pressing a mouth piece.
  • one part 23 of the mold can move in a direction 48 radially away from the longitudinal axis 34 and the other part 24 of the mold can move in a direction 49 radially away from the longitudinal axis 34 be moved to form a distance from the mouth piece 25.
  • the jaws 26-29 can each be moved radially towards the longitudinal axis 34 in a direction 44, 45, 46, 47 in order to also form a distance from the mouth piece 25.
  • the flat jacket segment surfaces 40, 41, 42, 43 of the respective jaws 26-29 can also be seen.
  • the Figure 4 shows a schematic semi-longitudinal section of a second embodiment of a device for forming and pressing a mouth piece of a container 52 comprising fibers, for example pulp, in a first arrangement.
  • a mandrel 50 with a flat jacket surface 58, which includes a longitudinal axis 51, is introduced into the container 52.
  • a form 54 which includes a structure 55 for forming the mouthpiece, surrounds at least an outer surface of the mouth portion 53 of the container 52 in which the mouthpiece is to be formed.
  • the shape 53 is at a distance from the outer surface of the mouth region 53.
  • the mold 53 is arranged in a mold extension 59.
  • the mold extension 59 extends around the mouth region 53 and part of a neck region of the container 52.
  • the mold extension 59 can also extend to the bottom of the container 52 (not shown).
  • the Figure 5 shows a schematic semi-longitudinal section of the second embodiment of the device in a second arrangement.
  • the mold 54 was moved in a direction 56 radially towards the longitudinal axis 51, whereby the distance between the mold 54 and the mandrel 50 is reduced, the mouth region 53 (see Figure 4 ) of the container 52 is pressed into the structure 53 of the mold 54 and so the mouth piece 57 can be formed or completed.
  • a tear-off ring of a closure can be placed between closure ring 52 and support ring 63, which can at least partially detach from the rest of the closure when the closed container 52 is screwed on.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Making Paper Articles (AREA)
EP23161681.4A 2022-07-12 2023-03-14 Dispositif et procédé de formage et de pressage d'une pièce de goulot d'un récipient contenant des fibres Pending EP4306714A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022117312.7A DE102022117312A1 (de) 2022-07-12 2022-07-12 Vorrichtung und Verfahren zum Formen und Pressen eines Mündungsstücks eines Fasern umfassenden Behälters

Publications (1)

Publication Number Publication Date
EP4306714A1 true EP4306714A1 (fr) 2024-01-17

Family

ID=85640772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23161681.4A Pending EP4306714A1 (fr) 2022-07-12 2023-03-14 Dispositif et procédé de formage et de pressage d'une pièce de goulot d'un récipient contenant des fibres

Country Status (3)

Country Link
US (1) US20240017513A1 (fr)
EP (1) EP4306714A1 (fr)
DE (1) DE102022117312A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE850688C (de) * 1949-04-07 1952-09-25 Martin Louis Dr Ing Verfahren und Vorrichtung zur Herstellung von Gefaessen aus Faserstoffen
US5356518A (en) * 1992-09-21 1994-10-18 The Cin-Made Corporation Method of producing molded paper pulp articles and articles produced thereby
JP2001303500A (ja) * 2000-04-26 2001-10-31 Kao Corp 成形品

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK3204556T3 (en) 2014-10-08 2019-03-11 Ecoxpac As SYSTEM AND PROCEDURE FOR MANUFACTURING A FORMATED ITEM, LIKE A BOTTLE
DE102017214472A1 (de) 2017-08-18 2019-02-21 Sig Technology Ag Ein Behälter mit einer ungefalteten Behälterschicht, beinhaltend eine Vielzahl von Partikeln, und einer Polymerschicht

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE850688C (de) * 1949-04-07 1952-09-25 Martin Louis Dr Ing Verfahren und Vorrichtung zur Herstellung von Gefaessen aus Faserstoffen
US5356518A (en) * 1992-09-21 1994-10-18 The Cin-Made Corporation Method of producing molded paper pulp articles and articles produced thereby
JP2001303500A (ja) * 2000-04-26 2001-10-31 Kao Corp 成形品

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Publication number Publication date
US20240017513A1 (en) 2024-01-18
DE102022117312A1 (de) 2024-01-18

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