EP1776286B1 - Procédé d'emboutissage pour la production d'un couvercle et appareil à cet effet - Google Patents

Procédé d'emboutissage pour la production d'un couvercle et appareil à cet effet Download PDF

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Publication number
EP1776286B1
EP1776286B1 EP05773895.7A EP05773895A EP1776286B1 EP 1776286 B1 EP1776286 B1 EP 1776286B1 EP 05773895 A EP05773895 A EP 05773895A EP 1776286 B1 EP1776286 B1 EP 1776286B1
Authority
EP
European Patent Office
Prior art keywords
holding
sleeve
shell
moulding tool
film
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.)
Not-in-force
Application number
EP05773895.7A
Other languages
German (de)
English (en)
Other versions
EP1776286A1 (fr
Inventor
Hans Franzen
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.)
Huhtamaki Alf Zweigniederlassung der Huhtamaki Deutschland GmbH and Co KG
Original Assignee
Huhtamaki Alf Zweigniederlassung der Huhtamaki Deutschland GmbH and Co KG
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 Huhtamaki Alf Zweigniederlassung der Huhtamaki Deutschland GmbH and Co KG filed Critical Huhtamaki Alf Zweigniederlassung der Huhtamaki Deutschland GmbH and Co KG
Publication of EP1776286A1 publication Critical patent/EP1776286A1/fr
Application granted granted Critical
Publication of EP1776286B1 publication Critical patent/EP1776286B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0225Removable lids or covers without integral tamper element secured by rotation
    • B65D43/0231Removable lids or covers without integral tamper element secured by rotation only on the outside, or a part turned to the outside, of the mouth of the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00064Shape of the outer periphery
    • B65D2543/00074Shape of the outer periphery curved
    • B65D2543/00092Shape of the outer periphery curved circular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00296Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342Central part of the lid
    • B65D2543/00351Dome-like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00953Sealing means
    • B65D2543/0099Integral supplemental sealing lips

Definitions

  • the invention relates to a thermoforming process for a deep drawing process for producing a first shell and a molding tool for carrying out the method.
  • Such containers are used for storing and transporting small parts of any kind, especially food, such as cream cheese, yogurt and the like, and in the latter of salad compositions that are provided with dressing or to which the dressing must be added.
  • a non-generic, as produced by injection molding container discloses the US 5,638,976 , The injection molding process has the advantage that the containers can be produced with a large variety of variants in terms of their geometry. The disadvantage of this manufacturing method lies in the comparatively high unit costs in the production.
  • the containers are usually disposed of after the consumption of the contents, only particularly inexpensive to be manufactured containers for this purpose in question, which can be produced from a thermoplastic material by deep-drawing.
  • a manufactured from a thermoformed plastic material container with two halves screwed against each other is in the US 3,322,262 and US 5,542,532 described.
  • the first half is provided with an external thread and the second half with an internal thread.
  • This structural design with two complementary matched threads is manufacturing technology but expensive to manufacture.
  • the tightness of the screwed together container is realized solely on the threaded connection, which leads to significant unevenness in the unavoidable manufacturing tolerances during deep drawing. This is particularly unacceptable when packaging food.
  • a deep-drawing method for making a cup with a thread and a one-piece mold therefor are known DE 10230001 .
  • the invention had the object of developing a deep-drawing process, with the manufacturing technology simple way a thread structure can be introduced into a first shell.
  • Another subtask is the development of a device for manufacturing the first trays.
  • the object is achieved with a deep-drawing process according to claim 1, wherein using a mold with a rotatably mounted holding sleeve and a pivotable to the holding sleeve in the circumferential direction threaded sleeve, initially driven in a starting position of the holding sleeve and threaded sleeve a film on the mold, the Inserted film for forming a first shell in the mold, clamped and molded, the threaded sleeve brought by spindling in an end position and the shell is stripped from the retaining sleeve.
  • the method according to the invention is exclusively the shaping process for creating a shell with a thread located thereon, for example a cover shell.
  • the film is preferably acted upon from its upper side with compressed air and nestles against the mold.
  • the shell is formed with the threads.
  • the threaded sleeve is spindled.
  • a process understood similar to a nut and a screw wherein the nut is the first shell and the screw is the threaded sleeve.
  • the shell is held during the unwinding of the holding sleeve and / or of the film.
  • it is possible to fix the first shell exclusively on the film during unwinding, thereby preventing the shell from rotating with the threaded shell.
  • this is particularly problematic for switches or thin materials, since the film can not absorb the forces occurring during unscrewing and it comes to deformation of the first shell. For this reason, it is advantageous to counter the first shell at least additionally with the retaining sleeve.
  • the shell can be stripped off the retaining sleeve together with the film.
  • the film impressed with the first shells is fed to another conventional punching machine and the shells are cut out of the film.
  • a qualitatively even more precise concentric shaping can be achieved if the shell is already punched out of the film on the molding tool before the threaded sleeve is unwound.
  • the first shell since it is already released from the film composite prior to unwinding, be fixed exclusively on the retaining sleeve against rotation with the threaded sleeve.
  • the holding sleeve is provided with a geometric structure which is formed after the forming process complementary in the first shell and allows a positive power transmission.
  • the first shell is completely dissolved out of the film, it is a form cutting process.
  • the subtask is achieved by a molding tool for producing a first shell with a stationary retaining sleeve and a sleeve rotatable in the circumferential direction from a starting position to an end position threaded sleeve, wherein in the threaded sleeve contours for forming at least two threads are formed.
  • An inner punch is advantageously arranged centrally within the holding sleeve.
  • the inner punch serves to shape the inner cup-shaped middle part and, in a particular embodiment, can be used alone or together with the holding sleeve in the axial direction. Be displaceable direction. Due to the displaceability, it is possible to lift the first shell relative to the mold after removal of the threaded sleeve and transported away.
  • the threaded sleeve is arranged concentrically around the holding sleeve, so that when unwinding the threaded sleeve rotates symmetrically about the holding sleeve.
  • the retaining sleeve should be inside and the threaded sleeve outside.
  • the retaining sleeve has a sloping wall portion, in which retaining ribs are arranged.
  • the retaining ribs can be aligned in the axial or radial direction of the retaining sleeve.
  • the retaining ribs should be as perpendicular as possible to the direction of rotation of the threaded sleeve, so that one of the pivoting movement the threaded sleeve on the shell acting torque is absorbed by the retaining ribs.
  • a holding device is arranged around the threaded sleeve, with which the film can be clamped outside of the mold and thereby fixed.
  • the holding device may comprise, for example, a fixed punching counter and a lowerable holding plate.
  • a holding and punching device may be arranged circumferentially around the threaded sleeve.
  • the mold cutting can be carried out particularly advantageously with a holding and punching device comprising a stripper plate, a lowerable knife plate and a threaded sleeve surrounding the concentric fixed knife sleeve, wherein the stripper plate and the knife plate are moved vertically.
  • a holding and punching device comprising a stripper plate, a lowerable knife plate and a threaded sleeve surrounding the concentric fixed knife sleeve, wherein the stripper plate and the knife plate are moved vertically.
  • the knife sleeve between the threaded sleeve and the stripper plate is arranged.
  • the film With the help of the lowerable knife plate, the film, after it has moved over the mold, clamped between the blade plate. Following the forming process and after unwinding the threaded sleeve, the latter is moved upwards, thereby shearing off the film with the knife plate.
  • the knife sleeve protrudes slightly relative to the stripper plate during the process of the film, so that a step forms in the film in the transition of the stripper plate to the knife sleeve, which serves for sealing during the shaping process.
  • the holding and punching device may comprise a fixed punching counter, a lowerable holding plate and a lowerable on the punch counter strip steel blade.
  • the steel strip knife is a steel strip which has been sharpened on one or both sides and which is annularly closed in the circumferential direction and is formed on its sharpened underside with recesses for remaining webs remaining.
  • the holding plate for holding the film and the strip steel blade are two separate components, so that a worn strip steel blade can be exchanged individually in a simple manner. As a result, particularly favorable production costs are possible.
  • vent holes are arranged in the retaining sleeve.
  • the mold is pressurized from above with compressed air, so that the film conforms to the forming tool and assumes a shell shape. This nestling is supported by the vent holes. It is also possible to connect to the vent holes a vacuum line and suck the film to the forming tool.
  • the threaded sleeve sets a travel distance of 10% to 25% of its circumference between the initial and end positions during demoulding.
  • the FIG. 1 shows a first shell in the form of a cover shell 1.
  • the cover shell 1 has a convex outwardly arched, cup-shaped central part 3, the peripheral wall 29 merges into a retaining edge 4. Between the cup-shaped central part 3 and the retaining edge 4 is gradually the Reduzierbund 5.
  • the peripheral wall 29 is provided with a corrugated structure 30, which is also on the inner side 29 a (see FIG. 4 ).
  • the retaining edge 4 is provided with a fastening means 47 in the form of a total of four threads 7a, 7b, 7c, 7d, whose contours both on the inner side 6a (see FIG. 3 ) as well as on the outer side 6b of the retaining edge 4 are formed.
  • a fastening means 47 in the form of a total of four threads 7a, 7b, 7c, 7d, whose contours both on the inner side 6a (see FIG. 3 ) as well as on the outer side 6b of the retaining edge 4 are formed.
  • the threads 7a, 7b, 7c, 7d for example, designed as a bottom shell 2 second shell (see FIG. 7 ) are attached to the lid shell 1.
  • the retaining edge 4 is also surrounded to the outside with a circumferential punching edge 49. This has a larger diameter than the cover shell 1, since this example in the manufacture with a in FIG. 12 described holding and punching device 43 is released from a film 23, wherein the holding and punching device 43 surrounds the cover shell 1 like a sleeve.
  • FIG. 2 In the side view of FIG. 2 In particular, the course of the threads 7a, 7b, 7d can be seen.
  • the thread 7c is not visible in this view, since it is located on the back of the cover shell 1.
  • the four threads 7a, 7b, 7c, 7d project outward and are delimited from one another by thread teeth 17a, 17b, 17c, 17d.
  • the thread teeth 17a, 17b, 17c, 17d protrude on the inside 6a (see FIG. 3 ) of the retaining edge 4 inwards and form a running surface for complementary formed elements of the bottom shell 2.
  • the elements may, for example, as holding wings 11 a, 11 b, 11 c, 11 d according to FIG. 5 be formed.
  • each thread 7a, 7b, 7c, 7d On the inlet side 31 of each thread 7a, 7b, 7c, 7d is in each case a threaded inlet 48, which widens like a funnel in the direction of the inlet side 31 to facilitate picking example of a holding wing 11 a, 11 b, 11 c, 11 d enable.
  • the thread teeth lying in the direction of rotation 17a, 17b, 17c, 17d on the inlet side 31 are rounded accordingly.
  • All threads 7a, 7b, 7c, 7d run at an acute angle of less than 45 ° against the Reduzierbund 5.
  • This area represents a clamping area 32, in which, for example, holding wings 11a, 11b, 11c, 11d with their front edge 12 (see FIG. FIGS. 7 to 10 ) in the assembled state of the lid and bottom pan 1, 2 are fixed.
  • FIG. 3 shows in a running through the center of the round cover shell 1 cross section, the course and the dimensioning of the threads 7a, 7b, 7d and the arrangement of the seal 8a formed as a sealing seal.
  • the inner diameter 18 of the retaining edge 4 is defined by the clearance between two opposing thread teeth 17a, 17b, 17c, 17d. In the FIG. 3 the inner diameter 18 is determined by the distance between the thread teeth 17b, 17d.
  • the inside diameter within two opposite threads 7a, 7b, 7c, 7d is referred to as the nominal diameter 15 of the retaining edge 4. In the FIG. 3 For example, the nominal diameter 15 can be seen between the threads 7b, 7d. The nominal diameter 15 is always greater than the inner diameter 18th
  • FIG. 4 shows in an enlarged view the area around the retaining edge 4 corresponding to the cutting plane in FIG. 3 ,
  • the thread 7a shown in this view has an inner side 6a open and otherwise largely rectangular profile.
  • the Reduzierbund 5 is horizontal and thus is substantially perpendicular to the upper portion 34 a of the cup wall 33 (s. FIG. 9 ). Between the Reduzierbund 5 and the peripheral wall 29 is located the sealing cone 8a, which projects beyond the clamping region 32 in the embodiment shown.
  • FIG. 5 is a cover shell 1 without circumferential sealing cone 8a shown.
  • This embodiment is provided for bottom shells 2, the opening edge 10 is to be closed with a sealing film.
  • a sealing cone 8a which in the assembled state of the cover shell 1 and bottom shell 2 under the opening edge 10 of the bottom shell 2 (see FIG. 7 ) engages would push into the over the opening edge 10 stretched sealing film and is therefore unsuitable for such an embodiment.
  • FIG. 5 shown embodiment of the cover shell 1 a total of six threads 7a, 7b, 7c, 7d, 7e, 7f, evenly distributed on the inside 6a (see FIG. 3 ) are arranged.
  • Such a cover shell 1 can also be screwed onto a bottom shell 2, not shown, with six retaining wings 11 a, 11 b, 11 c, 11 d.
  • FIG. 6 shows a further embodiment of the cover shell 1 with a standing perpendicular to the Reduzierbund 5 cylindrical peripheral wall 29.
  • the cup-shaped central part 3 was shown without a central cover.
  • a toothing is arranged as a corrugated structure 30.
  • the corrugated structure 30 does not extend through the peripheral wall 29.
  • the outer side 29b of the peripheral wall 29 has rather a smooth surface. Due to the corrugated structure 30 aligned in the axial direction of the cover shell 1, it is possible to record torques acting on the cover shell 1 in the circumferential direction during the production process via the corrugated structure 30 and a complementary formed forming tool 20.
  • FIG. 7 is shown as a second shell, a bottom shell 2, with a slightly conical open but substantially cylindrical cup wall 33, which merges in its upper portion 34a in an opening edge 10.
  • the lower portion 34b of the cup wall 33 merges into a more tapered base portion 35.
  • On the bottom of the bottom shell 2 is closed with a bottom plate 36 on one side.
  • the opening edge 10 of the second shell has a fastening means 47 in the form of a total of four evenly outwardly projecting retaining wings 11 a, 11 b, 11 c, 11 d.
  • These retaining wings 11a, 11b, 11c, 11d can be formed into correspondingly formed threads 7a, 7b, 7c, 7d, 7e, 7f, as in FIGS FIGS. 1 to 6 represented, engage and fixed by a rotational movement between the cover shell 1 and bottom shell 2 in the threads 7a, 7b, 7c, 7d, 7e, 7f.
  • the fixing takes place on the part of the holding wing 11 a, 11 b, 11 c, 11 d in the usually used right-hand threads at the front edge 12th
  • the retaining wings 11 a, 11 b, 11 c, 11 d are located in a plane to each other and close up with the plan edge opening 10 from.
  • the distance from the outer edge 14 of a holding wing 11 b to the Au ⁇ enkante 14 of the opposite holding wing 11 d is referred to as full circle diameter 16.
  • the full circle diameter 16 is selected to be slightly smaller than the nominal diameter 15 of the cover shell 1.
  • the outer diameter 19 of the opening edge 10 is measured outside the holding wings 11 a, 11 b, 11 c, 11 d. So that the cover shell 1 can grip over the base shell 2, the outer diameter 19 is selected to be slightly smaller than the inner diameter 18 of the retaining edge 4 (see FIG FIG. 3 ).
  • the symmetrical distribution of the holding wings 11 a, 11 b, 11 c, 11 d is also according to the plan view FIG. 8 to recognize.
  • the symmetrical configuration of each holding wing 11a, 11b, 11c, 11d is clear.
  • rounded outer edge 14 extend the leading edge 12 and the trailing edge 13 of each holding wing 11 a, 11 b, 11 c, 11 d at the same angle in the direction of the opening edge 10th
  • FIG. 9 represents in a side view, the bottom shell 2.
  • a conically opening base portion 35 which merges into the substantially cylindrical, only slightly conically opening, cup wall 33.
  • this goes into a gegenkonische wall, which in turn closes with the opening edge 10 and the holding wings arranged thereon 11 a, 11 b, 11 c, 11 d.
  • the retaining wings 11a, 11b, 11c, 11d have the same material thickness as the opening edge 10.
  • the retaining wings 11a, 11b, 11c, 11d also in a horizontal plane with the opening edge 10 lie.
  • the retaining wings 11 a, 11 b, 11 c, 11 d can then also have on their underside a ramp-like bevel, approximated to the thread pitch.
  • FIG. 10 shows in a plan view of a bottom shell 2 with four radially projecting from the opening edge 10 retaining wings 11 a, 11 b, 11 c, 11 d.
  • the retaining wings 11 a, 11 b, 11 c, 11 d have a relation to that in the FIGS. 8 and 9 embodiment shown on an asymmetric shape.
  • the leading edge 12 rises steeply in the radial direction. The angle is about 45 to 60 degrees.
  • the leading edge 12 closes a uniformly convex curved common outside and Trailing edge 13, 14, which merges directly into the nearest leading edge 12.
  • the shell is in this case a lid shell. 1
  • a mold 20 in three different functional positions with a previously formed to a cover shell 1 film 23 shows a fragmentary in a cross section the Figure 11 a to 11 c ,
  • FIG. 11 a are an inner punch 39, a holding sleeve 21 and a threaded sleeve 22 in an initial position to each other.
  • the threaded sleeve 22 surrounds the outside of the retaining sleeve 21 and the inner punch 39, both of which are arranged rotationally fixed in the mold 20.
  • the threaded sleeve 22 is pivotally mounted about the retaining sleeve 21.
  • the threaded sleeve 22 has a contour 25 for creating a thread 7a, 7b, 7c, 7d, 7e, 7f formed so that a heated film 23 has adapted according to the shape of the mold 20 and in particular contours 25 of the threaded sleeve 22.
  • FIG. 11a With the aid of the multipart molding tool 20, comprising the retaining sleeve 21 and the threaded sleeve 22, it is possible in a first method step according to the FIG. 11a first to form the at least two threads 7a, 7b, 7c, 7d, 7e, 7f and then to free the cover shell 1 of the mold 20. This happens accordingly FIG. 11 b by unscrewing the threaded sleeve 22 relative to the stationary holding sleeve 21 in the direction of movement 37. After unscrewing the threaded sleeve 22 is below the level of Stamped counter 41 depressed and is no longer engaged with the thread 7a.
  • the holding device 40 comprises a stationary stamping counter 41 and a holding plate 42, which can be lowered in the direction of the stamping counter 41. For fixing the film 23, this is clamped between the stamping counter 41 and the holding plate 42.
  • the holding sleeve 21 is provided in its wall portion 28 with retaining ribs 26, which are particularly well in FIG. 13 are visible.
  • the retaining ribs 26 are formed in the peripheral wall 29 of the cover shell 1 as a corrugated structure 30 and allow a positive power transmission.
  • FIG. 11c As shown method step, the holding sleeve 21 is moved back together with the inner punch 39 in the axial direction and raised the lowerable holding plate 42, so that the film 23 is released with the therein pronounced cover shell 1 of the mold 20 and can be removed. In further, known to those skilled steps then the cover shell 1 can be dissolved out of the film 23.
  • FIG. 12 Various functional positions of a mold for cutting mold 20 are shown in FIG. 12 also shown in a partial cross-section.
  • the assembly comprising the centrally located inner punch 39, the retaining sleeve 21 and the therefore pivotable threaded sleeve largely with the in the FIG. 11 shown mold 20 identical.
  • the molding tool 20 is concentrically surrounded by a holding and punching device 43 with which the cover shell 1 can be punched directly on the molding tool 20 from the film 23.
  • the holding and punching device 43 comprises the immediately adjacent to the threaded sleeve 22 knife sleeve 24, arranged around the knife sleeve 24 Abstreifplatte 44 and located above the stripper plate 44 knife plate 45. Both the stripper plate 44 and the knife plate 45 are vertically movable.
  • the shaping of the cover shell 1 in the film 23 takes place according to the position of the molding tool 20 in FIG. 12a , Here, the film is fixed by the lowered in the direction of the stripper plate 44 blade plate 45 by a clamping action. After fixing stripping and knife plate 44, 45 were lowered together, so that forms a step in the film 23 in the transition stripper plate 44 to the knife sleeve 24.
  • the threaded sleeve is clearlygespindelt according to the direction of movement 37 and a thread 7a in the cover shell 1 visible.
  • the knife sleeve 24 was moved upward, whereby the film 23 is sheared at its entire outer circumference on the blade plate 45.
  • the torque transmitted during unwinding onto the film resting loosely on the molding tool 20 is absorbed in this embodiment solely by the corrugated structure 30 formed in the circumferential wall 29 and the retaining ribs 26 complementarily shaped in the retaining sleeve 21, thereby causing the film 23, which has meanwhile become detached, to rotate Cover shell 1 avoided during unwinding.
  • retaining ribs 26 can be seen, which allow a holding the already completely dissolved from the film 23 cover shell 1 or support a still holding the film 23 in connection cover shell 1 support.
  • the holding ribs 26 are in their axial alignment perpendicular to the direction of movement 37 of the threaded sleeve 22.
  • the holding ribs 26 are located in the oblique wall portion 28 of the holding sleeve 21.
  • the holding ribs 26 are found after the manufacturing process as a corrugated structure 30 on the finished molded lid shell 1 again.
  • the holding sleeve 21 is provided with a plurality of vent holes 27, through which air between the film 23 and mold 20 escape or can be removed.
  • FIG. 14 shows a further alternative concerning the holding and supporting device 43 arranged around the forming tool 20 in a partial cross-sectional view for performing the band steel cutting.
  • the central assembly of the mold 20 is also here the inner punch 39, the neck sleeve 21 and the threaded sleeve 22 is surrounded.
  • the mold 20 is surrounded by the holding and supporting device 43, a fixed punching counterpart 41, a retractable retaining plate 42 and a guided on the holding plate 42 strip steel blade 46 comprises.
  • a first process step is accordingly Figure 14a the film 23 moved over the mold 20 and fixed around the mold 20, in which the holding plate 42 is lowered and thereby the lying on the punching counterpart 41 film 23 is clamped.
  • FIG. 14c illustrated process step includes lowering the strip steel blade 46 on the film 23, whereby the cover shell 1 is removed from the sheet 23 circumferentially.
  • the strip steel blade 46 is formed on its underside at discrete intervals with recesses, so that the cover shell 1 remains connected via residual webs 38 with the film 23. These residual webs 38 break out in a controlled manner in subsequent stacking processes.
  • the holding plate 42 is raised and the inner punch 39 together with the holding sleeve 21 down to a uniform level of punching counter 41 and lowered threaded sleeve 22 method ( Figure 14d ). In this position, the film 23 can be removed together with the cover shell 1 in a simple manner horizontally from the mold 20 and the holding and punching device 43.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Table Devices Or Equipment (AREA)

Claims (21)

  1. Procédé d'emboutissage pour la production d'une première coquille (1, 2), par exemple d'un couvercle (1), en utilisant un outil de formage (20) avec une douille de maintien (21) disposée de façon fixe en rotation et une douille filetée (22) pouvant pivoter en direction périphérique par rapport à la douille de maintien (21), dans lequel des contours (25) sont formés dans la douille filetée (22) pour créer au moins deux pas de vis (7a - 7f), dans lequel
    - on déplace une feuille (23) au-dessus de l'outil de formage (20) dans une position initiale de la douille de maintien (21) et de la douille filetée (22),
    - on introduit, on serre et on déforme la feuille (23) dans l'outil de formage (20) pour façonner la coquille (1, 2),
    - on amène la douille filetée (22) dans une position finale par alésage au tour, et
    - on enlève la coquille (1, 2) de la douille de maintien.
  2. Procédé d'emboutissage selon la revendication 1, dans lequel on maintien la coquille (1, 2) au moyen de la douille de maintien (21) et/ou de la feuille (23) pendant l'alésage au tour.
  3. Procédé d'emboutissage selon la revendication 1 ou 2, dans lequel on enlève la coquille (1, 2) de la douille de maintien (21) en même temps que la feuille (23).
  4. Procédé d'emboutissage selon la revendication 1 ou 2, dans lequel on découpe la coquille (1, 2) sur l'outil de formage (20) après l'alésage au tour de la douille filetée (22) à partir de la feuille (23).
  5. Procédé d'emboutissage selon la revendication 1, dans lequel on découpe la coquille (1, 2) sur l'outil de formage (20) avant l'alésage au tour de la douille filetée (22) à partir de la feuille (23).
  6. Procédé d'emboutissage selon la revendication 4 ou 5, dans lequel on découpe entièrement la coquille (1, 2) à partir de la feuille (23).
  7. Procédé d'emboutissage selon la revendication 4 ou 5, dans lequel on découpe partiellement la coquille (1, 2) à partir de la feuille (23) et des nervures résiduelles (38) subsistent entre la feuille (23) et la coquille (1, 2).
  8. Outil de formage (20) pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 7 avec une douille de maintien (21) disposée de façon fixe en rotation et une douille filetée (22) pouvant tourner en direction périphérique par rapport à la douille de maintien (21) d'une position initiale à une position finale, dans lequel des contours (25) sont formés dans la douille filetée (22) pour créer au moins deux pas de vis (7a, 7b, 7c, 7d, 7e, 7f).
  9. Outil de formage selon la revendication 8, dans lequel un poinçon intérieur (39) est disposé au centre à l'intérieur de la douille de maintien (21).
  10. Outil de formage selon la revendication 9, dans lequel le poinçon intérieur (39) et/ou la douille de maintien (21) sont mobiles en direction axiale.
  11. Outil de formage selon l'une quelconque des revendications 8 à 10, dans lequel la douille filetée (22) est disposée de façon concentrique autour de la douille de maintien (21).
  12. Outil de formage selon l'une quelconque des revendications 8 à 11, dans lequel la douille de maintien (21) présente une partie de paroi oblique (28), dans laquelle sont disposées des nervures de maintien (26).
  13. Outil de formage selon la revendication 12, dans lequel les nervures de maintien (26) sont orientées en direction axiale ou radiale de la douille de maintien (21).
  14. Outil de formage selon l'une quelconque des revendications 8 à 13, dans lequel un dispositif de maintien (40) est disposé autour de la douille filetée (22).
  15. Outil de formage selon la revendication 14, dans lequel le dispositif de maintien (40) comprend un contre-appui de découpage fixe (41) et une plaque de maintien abaissable (42).
  16. Outil de formage selon l'une quelconque des revendications 8 à 13, dans lequel un dispositif de maintien et de découpage (43) est disposé en périphérie autour de la douille filetée (22).
  17. Outil de formage selon la revendication 16, dans lequel le dispositif de maintien et de découpage (43) comprend une plaque d'enlèvement (44), une plaque de coupe abaissable (45) et une douille de coupe immobile (24) entourant de façon concentrique la douille filetée (22), dans lequel la plaque d'enlèvement (44) et la plaque de coupe (45) sont mobiles verticalement.
  18. Outil de formage selon la revendication 17, dans lequel la douille de coupe (24) est disposée entre la douille filetée (22) et la plaque d'enlèvement (44).
  19. Outil de formage selon la revendication 16, dans lequel le dispositif de maintien et de découpage (43) comprend un contre-appui de découpage immobile (41), une plaque de maintien abaissable (42) et un couteau en bande d'acier (46) abaissable sur le contre-appui de découpage (41).
  20. Outil de formage selon l'une quelconque des revendications 8 à 19, dans lequel des perçages d'aération (27) sont disposés dans la douille de maintien (21).
  21. Outil de formage selon l'une quelconque des revendications 8 à 20, dans lequel la douille filetée (22) parcourt, entre la position initiale et la position finale, une course qui correspond à 10 % à 25 % de son pourtour.
EP05773895.7A 2004-08-12 2005-08-12 Procédé d'emboutissage pour la production d'un couvercle et appareil à cet effet Not-in-force EP1776286B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004039814A DE102004039814A1 (de) 2004-08-12 2004-08-12 Behälter mit Deckel
PCT/EP2005/008779 WO2006018239A1 (fr) 2004-08-12 2005-08-12 Contenant comportant un couvercle

Publications (2)

Publication Number Publication Date
EP1776286A1 EP1776286A1 (fr) 2007-04-25
EP1776286B1 true EP1776286B1 (fr) 2013-06-19

Family

ID=35169626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05773895.7A Not-in-force EP1776286B1 (fr) 2004-08-12 2005-08-12 Procédé d'emboutissage pour la production d'un couvercle et appareil à cet effet

Country Status (7)

Country Link
US (1) US20070187408A1 (fr)
EP (1) EP1776286B1 (fr)
CA (1) CA2576591A1 (fr)
DE (1) DE102004039814A1 (fr)
EA (1) EA010245B1 (fr)
MX (1) MX2007001771A (fr)
WO (1) WO2006018239A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051402A1 (de) 2011-06-28 2013-01-03 Rpc Bebo-Plastik Gmbh Verfahren zur Herstellung eines thermogeformten Artikels und ein solcher Artikel
DE102016119818B3 (de) * 2016-10-18 2017-09-14 Marbach Werkzeugbau Gmbh Mehrteilige Verpackung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7037497U (de) * 1971-01-07 Illig A Maschinenbau Vorrichtung zur Herstellung von Gegen standen wie Deckeln und Boden aus thermo plastischer Kunststoff Folie
US3322262A (en) * 1965-06-01 1967-05-30 Leaming Plastics Inc Moisture-tight container
DE1704804B2 (de) * 1967-12-15 1975-05-22 Josef Krauss Und Rudolf Lensing Maschinenfabrik Gmbh, 5000 Koeln Verfahren und Vorrichtung zur Herstellung von Kunststoff-Gewindekappen für Flaschen und sonstige Behälter
US3782574A (en) * 1970-08-20 1974-01-01 R Rumble Tamperproof closure for containers
JPS58220703A (ja) * 1982-06-18 1983-12-22 Toumei Kagaku Kogyo Kk 金型装置
JPH0948444A (ja) * 1995-08-09 1997-02-18 Chugoku Pearl Hanbai Kk 蓋嵌合容器
US5542532A (en) * 1995-10-27 1996-08-06 Mitchell; David C. Compact disc holder
US5638976A (en) * 1995-11-15 1997-06-17 Arnold; Bruce Douglas Container with rotatable locking lid
SE518637C2 (sv) * 1999-04-21 2002-11-05 Christer Ljungqvist Termoformad behållare och lock av tunnväggig plast samt metod för framställning av behållaren och lock
DE10230001A1 (de) * 2002-07-03 2004-01-22 Sig Technology Ltd. Deckel für Getränkekartonverbundpackungen sowie Werkzeuge und Verfahren zur Herstellung eines solchen Deckels sowie damit versehene Getränkekartonverbundpackungen

Also Published As

Publication number Publication date
DE102004039814A1 (de) 2006-02-23
WO2006018239A1 (fr) 2006-02-23
EP1776286A1 (fr) 2007-04-25
MX2007001771A (es) 2007-09-11
EA010245B1 (ru) 2008-06-30
CA2576591A1 (fr) 2006-02-23
EA200700218A1 (ru) 2007-06-29
US20070187408A1 (en) 2007-08-16

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