WO2002020360A2 - Corps moule par transfert et dispositif et procede pour fabriquer ledit corps - Google Patents

Corps moule par transfert et dispositif et procede pour fabriquer ledit corps Download PDF

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Publication number
WO2002020360A2
WO2002020360A2 PCT/EP2001/010299 EP0110299W WO0220360A2 WO 2002020360 A2 WO2002020360 A2 WO 2002020360A2 EP 0110299 W EP0110299 W EP 0110299W WO 0220360 A2 WO0220360 A2 WO 0220360A2
Authority
WO
WIPO (PCT)
Prior art keywords
slide
mold
deck
pallet
feet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2001/010299
Other languages
German (de)
English (en)
Other versions
WO2002020360A3 (fr
Inventor
Rochus C. RÜTTNAUER
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.)
REMAPLAN ANLAGEBAU GmbH
Original Assignee
REMAPLAN ANLAGEBAU GmbH
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 REMAPLAN ANLAGEBAU GmbH filed Critical REMAPLAN ANLAGEBAU GmbH
Priority to AU2002213890A priority Critical patent/AU2002213890A1/en
Publication of WO2002020360A2 publication Critical patent/WO2002020360A2/fr
Publication of WO2002020360A3 publication Critical patent/WO2002020360A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004—Rigid pallets without side walls
    • B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
    • B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
    • B65D19/001—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
    • B65D19/0012—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming a continuous plane contact surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7178—Pallets
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00034—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00069—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00263—Overall construction of the pallet
    • B65D2519/00268—Overall construction of the pallet made of one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00288—Overall construction of the load supporting surface made of one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00308—Overall construction of the load supporting surface grid type, e.g. perforated plate
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00318—Overall construction of the base surface made of one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00363—Overall construction of the base surface grid type, e.g. perforated plate
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00407—Integral, e.g. ribs on the load supporting surface
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00412—Integral, e.g. ribs on the base surface
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00736—Details
    • B65D2519/00935—Details with special means for nesting or stacking
    • B65D2519/00955—Details with special means for nesting or stacking stackable
    • B65D2519/0096—Details with special means for nesting or stacking stackable when empty

Definitions

  • the invention relates to an injection-molded body with two decks and an externally closed edge such as plastic pallets, formwork panels and the like according to the preamble of claim 1 and an apparatus and a method for its production.
  • a plastic pallet which has an upper deck with feet integrally molded on the underside and runners attached to the feet. Pins are formed on the top of the runners, which are inserted into openings of hollow cylinders formed on the underside of the feet of the upper deck and are held therein without additional fastening means, so that the upper deck of the pallet is connected to the pallet runners.
  • a plastic pallet with upper deck and lower deck is known, the upper deck having a plurality of hollow cylinders arranged in a certain grid of a certain height and the lower deck having an equal number of hollow cylinders of the same height arranged in mirror image, the diameter of the Hollow cylinders of the two deck walls are at least partially sized differently, the hollow cylinders of the lower deck being positively and frictionally mounted in those of the upper deck.
  • AT-PS 331704 describes a multi-part plastic pallet consisting of an upper deck and a lower deck, the upper deck being provided with hollow feet which are placed on bases arranged in the lower deck and, if appropriate, are firmly connected to the lower deck by welding.
  • a pressed plastic pallet with a smooth or closed top floor of the upper deck and with ribbing on the underside of the upper deck is known, with spacer bases welded in, which are intended to provide corresponding spaces for the forks of a forklift truck or pallet truck to engage.
  • the dimensional stability, the strength and the resulting durability of the above-mentioned, known multi-part plastic pallets is not optimal.
  • the pallet parts of some known plastic pallets are welded together in a horizontal plane.
  • Other multi-part plastic pallets are welded together in one plane perpendicular to the load-bearing surface of the pallet.
  • weld seams have the defect that they become brittle after some time, so that the pallet becomes unusable more quickly than pallets without weld seams.
  • Another serious disadvantage is that the production of pallets of this type, composed of several parts and welded together, means a significant manufacturing outlay.
  • a plastic pallet which has a plug-in connection for the upper deck and the lower deck, which is formed in the area of the pallet feet and which has a high pull-out strength, good connection rigidity against twisting with respect to the vertical to achieve a good torque transmission from the upper deck to the lower deck or to the runners of the pallets and good connection rigidity against horizontal twisting is achieved.
  • the multi-part design of the foot section / Foot attachment connection increases the contact surfaces of the assembled parts, whereby the forces holding these parts together are increased as a result of increased frictional engagement. This two-part plastic pallet has proven itself in use.
  • DE-PS 15 56 151 discloses a one-piece plastic pallet produced by means of a mold in a single operation.
  • This skid-free pallet has an upper deck and a lower deck of the same design, with ribs and recesses in the upper deck and lower deck being offset in relation to one another in such a way that the ribs of the upper deck are over the same length and width as the ribs Recesses of the lower deck and the ribs of the lower deck lie below the cutouts of the upper deck that are as long and wide as these, and wherein the upper deck-lower deck spacers are designed as perpendicular webs running at right angles to the ribs.
  • This known plastic pallet is not very resilient, in particular the ribs projecting inwards from the upper deck and lower deck can be easily damaged by the intervention of the fork of a forklift, so that the load-bearing capacity of the pallet is impaired.
  • a one-piece pallet in particular made from recycled plastic, is known from EP 0 572 946 B1, which comprises a plate-shaped ges supporting deck and a standing cover element lying in a plane parallel and spaced apart from the level of the supporting deck, column-shaped feet extending from underside corner regions of the supporting deck to the sand covering element, which are braced with one another in the standing deck level by skid bars.
  • the plate of the support deck overhangs the outline of the stand cover element formed by the edge feet and the edge runner webs with a narrow edge and a support deck hole is formed vertically above each runner web in the support deck, which has the same circumferential contour as the runner web and in which the feet, the Skid bars and the supporting deck are designed as hollow bodies which are open at the bottom. Because the feet, the runner webs and the supporting deck of this known plastic pallet are designed as hollow bodies which are open at the bottom, the shape of the pallet can be represented by relatively few such hollow bodies, these hollow bodies each covering a considerable surface area.
  • a disadvantage of this known pallet is that the skid bars are narrower than the pallet feet due to the shaping process and therefore have a lower stability.
  • the object of the invention is to create a one-piece molded plastic body with two decks, which has a very high stability and low tendency to contamination.
  • the object is achieved with a device with the features of claim 13 and with a method with the features of claim 34.
  • the one-piece molded plastic body with two decks in particular the one-piece plastic pallet, has an upper deck which is ribbed into the edge areas, but the upper deck is closed laterally all the way around to the outside. Furthermore, in the peripheral areas there are no openings from the upper deck to the lower deck for shaping skid bars, so that the upper deck has optimum stability in the peripheral areas. Furthermore, the runner webs, which connect the feet of the pallet to one another in the area of a footprint, are pulled outwards and at least connect the outer feet to one another over essentially their full width, so that optimum stability is achieved.
  • the plastic pallet above the insertion openings for the forks of a forklift truck on the upper deck protrudes lips or webs and below the insertion openings slightly recessed runners against the outer edge, so that such stacked pallets easily interlock and prevent lateral slipping are secured.
  • the device according to the invention provides for the runners and the ribbing, which is closed to the outside, to be shaped with a so-called slide in slide technology, which is known per se from injection molding technology, lateral slides being inserted into the closed shape and then be raised. After shaping, these slides are lowered and extended again so that undercuts or undercuts - in this case the closed outer wall of the upper deck above the runners - can be created and the shaped body can still be completely shaped.
  • slide in slide technology which is known per se from injection molding technology
  • the - usually - used central injection point is used in the case of particularly complex and complicated molded part geometries and that several injection points are used.
  • the molded plastic body according to the invention in particular a formwork panel or pallet, it is advantageous that a shaped body is created which has an essentially smooth upper deck without sensitive side edge regions and continuous skid bars across the entire width of the feet, so that optimum stability is achieved. Furthermore, the molded body is formed with a circumferential, smooth outer side surface, so that contamination by clogging the rib passages with dirt or the like or pests is prevented.
  • FIG. 2 shows a pallet according to FIG. 1 in a cross section along the line B-B
  • FIG. 3 shows a pallet according to FIG. 1 in a cross section along the line A-A
  • FIG. 4 shows a pallet according to FIG. 1 in a side view
  • FIG. 5 shows a pallet according to FIG. 1 in a top view of the supporting deck
  • FIG. 6 shows a further embodiment of a pallet according to the invention in a bottom view
  • FIG. 7 is a pallet according to FIG. 6 in a cross section along the line A-A,
  • FIG. 8 is a top view of a pallet according to FIG. 6,
  • FIG. 9 is a perspective view of the bottom of a pallet according to FIG. 6,
  • FIG. 10 is an enlarged detail of FIG. 9,
  • FIG. 11 shows a pallet according to FIG. 6 in a perspective top view of the upper side or the supporting deck
  • FIG. 11 shows an injection molding device according to the invention with a pallet according to the invention in half a cross section through the mold halves with the slide-in slide fully inserted,
  • FIG. 14 shows a device according to FIG. 13, in which the slide-slide-in-slide is slightly pulled out
  • FIG. 15 shows a device according to FIG. 13, in which the slide-slide construction is pulled out further
  • FIG. 16 shows a device according to FIG. 13, in which the slide-slide construction is completely pulled out of the region of a cavity forming a pallet according to the invention
  • FIG. 17 shows a device according to FIG. 13 in a partially sectioned plan view of the tool forming the underside of the pallet with the slide-in-slide device pulled out of the cavity forming the pallet, FIG.
  • FIG. 18 shows a further embodiment of a slide-in-slide construction in a section through part of the mold in the region of a slide channel outlet on the mold cavity side
  • FIG. 19 shows a further embodiment of a pallet according to the invention in a perspective view of the upper deck
  • FIG. 21 shows a further embodiment of a pallet according to the invention in a perspective view of the upper deck, 22 a pallet according to FIG. 21 in a perspective view of the lower deck,
  • FIG. 23 shows a further embodiment of a pallet according to the invention in a perspective top view of the upper deck
  • FIG. 25 shows a further embodiment of a pallet according to the invention with a channel-like, rounded ribbing of the runners in a partially cut perspective view from below.
  • a molded plastic part 1 according to the invention e.g. the pallet 1 (FIGS. 1 to 5) has a plate-shaped square upper deck or support deck 2 and a lower deck 3 or stand deck 3.
  • feet 4 are arranged in the edge regions in the corner regions and feet 5 in the edge center regions and in the center of the underside of the support deck 2 a central foot 6.
  • the feet 4, 5 and 6 are square or rectangular in cross-section and extend from the supporting deck 2 perpendicularly to a level of the standing deck 3 parallel to the level of the supporting deck 2.
  • the feet 4 and 5 are along with one another via skid bars 7 of the edge of the pallet connected transversely.
  • the runner webs 7 have a width which essentially corresponds to the width of the feet 4, 5 or are just as wide as the feet.
  • the essential elements 2, 3, 4, 5, 6, and 1, from which the pallet 1 is formed in one piece are hollow and open at the bottom and point in a manner known per se Cross and longitudinal webs 8, which form a cross and cross ribbing and support and stiffen the walls of the elements accordingly. Accordingly, the feet 4, 5 as well 6 continuous webs 8 in the form of a lattice structure at the full height of the feet.
  • the cross-sectionally U-shaped runner webs 4 are designed with ribs or webs 8 extending in the longitudinal and / or transverse direction of the runner webs, and the U-shaped plate of the deck 2, which is likewise broad in cross-section, has transverse webs 8 on the underside, likewise in a lattice structure.
  • the upper deck top 2 is flat and smooth without openings (Fig. 5), with the exception of lateral openings 13 between the feet 4, 5, the pallet has a circumferential smooth side outer surface 9.
  • the side openings 13 serve as insertion holes 13 for forks of a forklift.
  • the runner webs 7 are formed in the region of the insertion holes 13 opposite the circumferential side surface 9 of the pallet 1 of each foot 4, 5, each with a step 10 edge 10 slightly set back from the outer surface, with the edge side narrow lips 12 or webs 12 projecting upward in alignment above the edge 11 or the insertion hole 13 on the upper side of the supporting deck, so that pallets stacked one above the other are secured against lateral slipping of individual pallets in that the lips 12 or webs 12 in the project the recessed area of the runner webs 7 of the next pallet and rest against the edge 11.
  • runner webs 14 are formed from the feet 5 to the central foot 6, support deck holes 15 being arranged which extend above the runner webs 14 from the central foot 6 to the outer feet 5 and the formation of the runners 14 by the upper die of the mold.
  • FIGS. 19 to 24 there are recesses 77 in the outer feet 4, 5 or recesses 77 are arranged so that the surfaces of the feet are partially or completely recessed relative to the outer surface of the pallet.
  • Recesses or recesses can only be arranged in the corner feet (FIGS. 19 and 20), these recesses extending around the corner, but not being arranged in the feet 4 over the entire surface.
  • the feet 5 in the middle of the edge can be provided with continuous recesses or recesses 77 (FIGS. 21, 22).
  • the runner web 7 has a ribbing 8, the ribs 8 of such a runner web 7 with curves 8a merging into a bottom wall 7b, so that trough-like elongated channels 8b are formed.
  • the ribbing 8 of the runners 7 it is advantageous that such runners or these channels are less likely to become contaminated and are much easier to clean.
  • Plastic moldings, in particular pallets with such channels, are therefore preferably used in the field of food technology.
  • the device according to the invention for the injection molding of the pallet according to the invention (FIGS. 13 to 17) essentially corresponds to the shaping region 30 of a conventional device for the injection molding of plastics.
  • the device has a mold frame (not shown) with two - for example upright - plate-shaped mold table tops 31, 32, which are arranged opposite one another with flat sides 33.
  • the molding table plate 31 facing an injection device serves as a fixed molding table plate 31, on the flat side 33 of which a molding tool 34, in particular for molding the upper deck of a pallet 1 according to the invention, is arranged.
  • the molding table top 31 and the molding tool 34 point along a longitudinal axis 35, which corresponds to the injection direction for plastic, an axial central recess 36 (only half shown in the figures), which is adapted to the outer shape of an opening of an injection nozzle to such an extent that an injection nozzle perpendicular to the plate plane in the molding table top 31 and the mold 34 can be arranged at rest.
  • a front edge 37 of the recess 36 or the mouth 38 of the recess 36 is flush with the inner surface 39 of the mold plate facing the pallet or the molded part.
  • the movable molding table 32 is arranged with a corresponding molding tool 40 facing the molding tool 34.
  • the molding table 32 On its side facing away from the molding tool 40, the molding table 32 is connected to a crosshead, not shown, via a hydraulic drive for closing and opening the mold.
  • the forming tool 40 can be moved with the movable forming table 32 towards and away from the corresponding corresponding forming tool 34.
  • the entire mold area or mold frame is firmly connected to a base plate or a building foundation (not shown).
  • the movable molding tool 40 (FIGS. 15, 19) is designed with respect to its outer contour or with respect to its surface contour to form the underside of the upper deck 2 and the lower deck 3 or the feet 4, 5, 6 and the undersides of the runner webs 7, 14 , In the areas between the feet 4, 5 or in the area of the entry holes 13 below the upper deck 2 and above the skid bars 4 of a pallet to be manufactured, slide devices 45 are arranged on the side of the movable molding tool 40.
  • the slide devices 45 have a slide housing 46 with a slide channel 47 as well as a slide 48 which is longitudinally displaceable in the slide channel 47 and a slide movement device 49.
  • the slide housing extends essentially over the height of the molding tool 40 and at least over the width of the pallet from a corner foot 4 on one side to the next corner foot 4 on the same side (FIG. 19, representation of a quarter shape).
  • a slide channel 47 which is flat rectangular in cross section with respect to the mold table surface 33 or the clamping plane of the mold 40.
  • the slide movement device 49 is formed on the slide housing 46, in particular in the form of a hydraulic piston-cylinder unit 51 with an actuating cylinder 52 and a piston 53 which can be moved into the slide channel 47.
  • the slide 48 is arranged in the slide channel 47, the slide 48 having a cuboid-shaped guide region 54 and a shaping region 55.
  • the guide area 54 is arranged behind the shaping area 55 in relation to the molding tool 40.
  • the shaping region 55 has, in accordance with the shape of the recess (13) to be formed, in the side of the pallet (1) a bottom surface 56 that forms the upper side of the runners, in particular a smooth surface, and an underside of the upper deck 2 or upper deck transverse and longitudinal webs 8 forming profiled upper side 57, and the side walls of the feet 4, 5 forming side walls 58 connecting the lower side and upper side.
  • the shaping area 55 tapers from the guide area 54 with transition radii 60.
  • the slide 48 is formed in two parts from an upper slide part 61 and a lower slide part 62.
  • the piston 53 of the piston-cylinder unit 51 is arranged on the rear on the rear 63b of the lower slide part 62.
  • the lower slide part 62 tapers linearly towards the shaping area 55, while the upper slide part 61 thickens in accordance with the tapering of the lower slide part 62, so that the lower slide part 62 forms a ramp 62b falling towards the shaping area 55.
  • the upper slide part 61 and the lower slide part 62 each form a mutually corresponding, essentially prismatic shape.
  • the upper slide part 61 has a locking strip 64 which is rectangular in cross section and ends with the rear side 63a of the upper part, away from the lower part 62 of the slide.
  • the upper slide part 61 and the lower slide part 62 each have a front wall 65, 66.
  • a locking groove 67 with a groove bottom 68 and groove side walls 69 corresponding to the locking bar 64 is arranged in the slide channel 47.
  • the locking groove 67 is arranged in the slide channel in such a way that the locking strip 64 of the upper slide part can engage in the locking groove 67 when the slide is fully inserted.
  • FIG. 18 In a further embodiment (FIG. 18) of the slide-in-slide construction, instead of a locking groove 67 in the region of a front groove side wall 69, a stop step 80 running transversely on the upper side of the slide channel 47 is provided for the locking bar 64.
  • this embodiment has a hydraulic locking bolt 81 or a hydraulic locking bar 81 which, after the slide 48 has been fully inserted into the mold behind the locking bar 64, is inserted into the slide channel 47 such that it is on a rear side 63a of the slide upper part 61 abuts.
  • the upper slide part 61 and the lower slide part 62 are slidably arranged on one another, a guide, for example a dovetail guide or T-guide, being present between the upper slide part 61 and the lower slide part 62 such that the upper slide part 61 on the lower slide part 62 up to a defined one by the guide certain stop can freely slide down the ramp 62b.
  • a guide for example a dovetail guide or T-guide
  • the molding tool 40 has an area 70 for shaping the underside of the runners and an area 71 for shaping the underside of the upper deck, a step 72 with an outwardly facing area between the shaping area 70 and the shaped area 71 Wall 73 is formed.
  • the slide 48 In the initial state (FIG. 16), the slide 48 is completely drawn into the slide channel, the upper slide part 61 sliding down the ramp 62a on the ramp 62a of the lower slide part 62 up to a stop, not shown, in the sliding guide, in particular a dovetail guide or T-guide.
  • the locking bar 64 rests with an upper side against a wide inner wall of the slide channel, while the lower part 62 of the surface of the guide area lying opposite the ramp 62b rests against the wide inner wall of the wide slide channel 47.
  • the slide 48 with the piston 53 of the piston-cylinder unit is moved into the area forming the pallet 1 until a front wall 65 of the upper slide part 61 on the wall 73 or step 72 of the movable molding tool 40 abuts.
  • the locking bar 64 and the locking groove 67 are aligned, so that the locking bar 64 is located exactly below the locking groove 67.
  • the lower slide part 62 also reaches the area of an insertion hole 13 to be provided on the pallet 1, the upper slide part, since it already abuts the wall 73, sliding along the ramp 62a and being lifted up in the process , so that the locking bar 64 enters the locking groove 67.
  • the front walls 65, 66 of the upper slide part 61 and the lower slide part 62 abut the wall 73 or step 72.
  • the locking bar 64 is located completely in the locking groove 67.
  • the walls 69 of the locking groove 67, but at least the wall 69 of the locking groove 67 facing away from the mold 40, are preferably designed so as to be oblique to the groove bottom 68 such that the groove 67 tapers towards the groove bottom 68.
  • the locking bolt 81 or the locking bar 81 is inserted through an opening 82 in the sliding box 46 into the sliding channel 47 behind the locking bar 64 until the locking bolt 81 or the locking bar 81 comes to lie behind the locking bar 64 of the slide upper part 61.
  • the hydraulic locking bar 81 or the hydraulic locking bolt 81 abutting the rear side 63a of the locking bar 64 presses the upper part 61 of the slide with its front wall 65 against the wall 73 of the mold, so that the pressure in the area of contact between the upper part of the slide and the mold is so high that no plastic material can penetrate this area and form a skin.
  • the mold halves 34, 40 are moved towards one another in such a way that the mold is closed and a cavity is formed, into which plasticized plastic compound is then injected through the mouth 38.
  • the two mold halves 34, 40 are moved further towards one another, as a result of which the plasticized plastic compound is also pressed in the mold and is thereby also caused into the finest grooves, for example also the grooves 59 of the slide.
  • Upper part 61 to flow into.
  • the piston 53 is moved out of the sliding housing 46, as a result of which the lower slide part 62 is pulled out of the region of a shaped insertion hole.
  • the slide upper part 61 slides down the ramp 62a in the dovetail guide or T-guide or is pulled out of the locking groove by pulling back the slide lower part 62.
  • the upper slide part 61 preferably slides down the slope 62a in the guide until an end stop is reached.
  • the slide lower part 62 is moved out of the mold and the hydraulic bolt 81 is moved out of the slide channel 47 at least a little in order to press the slide upper part against the wall 73 relieve pressure so that the locking bar 64 can slide out of the space between the bolt 81 and the stop edge 80, analogous to a locking groove.
  • the pallet can be shaped.
  • the lift or the lowering of the upper slide part 61, caused by the ramp 62 and the positive guidance on the lower slide part 62, is dimensioned such that the upper slide part after the formation of the pallet so far out of the area of the ribbing 8 that the ribs 8, which are formed by the grooves 59 of the slide upper part, completely come out of these grooves.
  • This technique makes it possible to form undercuts in this case, to form the ribs 8 which are formed by the grooves 59 and yet to form bodies with such undercuts, in particular a circumferential, smooth outer wall 9, using the injection molding process.
  • this molded body has an outer wall which is closed, in particular in the sensitive edge areas, and has a smooth upper deck which has no edges formed above the runners or the insertion holes by the ribbing Has side-opening cavities.
  • Such a shaped body has not previously been able to be produced, since such complex undercuts could not be produced by the injection molding process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Pallets (AREA)

Abstract

L'invention concerne une palette monobloc moulée par transfert et constituée de plastique, en particulier de plastique recyclé visqueux. Cette palette comprend une surface de support ou supérieure (2) de type plateau, ainsi qu'une surface de base ou inférieure (3) étant parallèle à la surface de support (2) et à distance de celle-ci. Des pieds en forme de colonne (4, 5) s'étendent sur les bords de la palette entre la surface de support (2) et la surface inférieure (3), ces pieds étant reliés par des bandes jointives (7) au niveau de la surface inférieure. Les pieds (4, 5), les bandes jointives (7) et la surface de support (2) sont des corps creux, ouverts vers le bas, les espaces vides étant délimités par un nervurage transversal et longitudinal (8). Des trous d'insertion (13) sont ménagés au-dessus des bandes jointives (7) et entre les pieds (4, 5) pour permettre l'insertion d'une fourche de chariot élévateur. La partie supérieure de la surface de support ou supérieure (2) est fermée au-dessus des bandes jointives (7) et la palette (1) présente une paroi latérale externe fermée et lisse (9), à l'exception des trous d'insertion (13), de telle sorte que le nervurage (8) est fermé à l'extérieur latéralement. L'invention concerne également un dispositif et un procédé pour fabriquer ladite palette.
PCT/EP2001/010299 2000-09-06 2001-09-06 Corps moule par transfert et dispositif et procede pour fabriquer ledit corps Ceased WO2002020360A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002213890A AU2002213890A1 (en) 2000-09-06 2001-09-06 Transfer moulded plastic pallet and device and method for producing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10043915.2 2000-09-06
DE2000143915 DE10043915A1 (de) 2000-09-06 2000-09-06 Spritzgepresster Formkörper sowie Vorrichtung und Verfahren zu seiner Herstellung

Publications (2)

Publication Number Publication Date
WO2002020360A2 true WO2002020360A2 (fr) 2002-03-14
WO2002020360A3 WO2002020360A3 (fr) 2002-11-07

Family

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Application Number Title Priority Date Filing Date
PCT/EP2001/010299 Ceased WO2002020360A2 (fr) 2000-09-06 2001-09-06 Corps moule par transfert et dispositif et procede pour fabriquer ledit corps

Country Status (3)

Country Link
AU (1) AU2002213890A1 (fr)
DE (1) DE10043915A1 (fr)
WO (1) WO2002020360A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016122357A3 (fr) * 2015-01-27 2017-01-12 عبد الله، على محمد الصانع، Procédé de fabrication de palette en plastique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7389458B2 (ja) * 2019-09-17 2023-11-30 岐阜プラスチック工業株式会社 パレット及び金型
IT202100030500A1 (it) * 2021-12-01 2023-06-01 Solution Italy Soc A Responsabilita Limitata Pedana per sostenere e trasportare merce maneggiabile ed impilabile unitariamente
EP4311791A1 (fr) * 2022-07-29 2024-01-31 Motherson Innovations Company Ltd. Palette

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DE1556151B1 (de) 1967-12-20 1970-04-23 Craemer Press & Stanzwerk Einstueckig mittels einer Form hergestellte Palette
US3664271A (en) 1969-12-15 1972-05-23 Ernest Harold Wolder Plastic molded pallet
US3759194A (en) 1970-12-19 1973-09-18 Dainippon Ink & Chemicals Plastic pallet
AT331704B (de) 1970-10-10 1976-08-25 Schoeller & Co Kg Palette aus kunststoff
EP0227033A2 (fr) 1985-12-18 1987-07-01 Remaplan Anlagenbau Gmbh Palette en plastique
EP0400640A1 (fr) 1989-06-02 1990-12-05 Remaplan Anlagenbau Gmbh Palette en plastique
EP0572946A2 (fr) 1992-06-01 1993-12-08 Remaplan Anlagenbau Gmbh Palette en matière synthétique
WO1994010051A1 (fr) 1992-11-05 1994-05-11 Mauser-Werke Gmbh Palette en plastique

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DE19510873A1 (de) * 1995-03-24 1996-09-26 Remaplan Anlagenbau Gmbh Palette aus Kunststoff
DE29612792U1 (de) * 1996-04-22 1996-09-19 KUNO Kunststofftechnik Nord GmbH & Co., 17098 Friedland Kunststoff-Palette
NL1005834C2 (nl) * 1996-04-22 1999-08-16 Kute Kunststofftechnik Enginee Kunststof pallet.
ATE307764T1 (de) * 1997-08-26 2005-11-15 Vicfam Plastics Pty Ltd Kunststoffpalette und verfahren zum herstellen solcher paletten sowie anderer kunststoffprodukte
DE19746142A1 (de) * 1997-10-18 1999-04-29 Streuber Sulo Eisenwerk F Kunststoff-Palette
DE19822743A1 (de) * 1998-05-20 1999-11-25 Remaplan Anlagenbau Gmbh Kunststoffpalette

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1556151B1 (de) 1967-12-20 1970-04-23 Craemer Press & Stanzwerk Einstueckig mittels einer Form hergestellte Palette
US3664271A (en) 1969-12-15 1972-05-23 Ernest Harold Wolder Plastic molded pallet
AT331704B (de) 1970-10-10 1976-08-25 Schoeller & Co Kg Palette aus kunststoff
US3759194A (en) 1970-12-19 1973-09-18 Dainippon Ink & Chemicals Plastic pallet
EP0227033A2 (fr) 1985-12-18 1987-07-01 Remaplan Anlagenbau Gmbh Palette en plastique
EP0400640A1 (fr) 1989-06-02 1990-12-05 Remaplan Anlagenbau Gmbh Palette en plastique
EP0572946A2 (fr) 1992-06-01 1993-12-08 Remaplan Anlagenbau Gmbh Palette en matière synthétique
WO1994010051A1 (fr) 1992-11-05 1994-05-11 Mauser-Werke Gmbh Palette en plastique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016122357A3 (fr) * 2015-01-27 2017-01-12 عبد الله، على محمد الصانع، Procédé de fabrication de palette en plastique

Also Published As

Publication number Publication date
WO2002020360A3 (fr) 2002-11-07
AU2002213890A1 (en) 2002-03-22
DE10043915A1 (de) 2002-03-14

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