EP0387404A1 - Tiefgezogene Kunststoff-Palette - Google Patents

Tiefgezogene Kunststoff-Palette Download PDF

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Publication number
EP0387404A1
EP0387404A1 EP89120747A EP89120747A EP0387404A1 EP 0387404 A1 EP0387404 A1 EP 0387404A1 EP 89120747 A EP89120747 A EP 89120747A EP 89120747 A EP89120747 A EP 89120747A EP 0387404 A1 EP0387404 A1 EP 0387404A1
Authority
EP
European Patent Office
Prior art keywords
molded part
standing plane
wall sections
connection points
pallet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89120747A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hans-Dieter Reckermann
Wolfgang Berkenkamp
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.)
Rebo-Plastic & Co KG GmbH
Rebo Plastic GmbH and Co KG
Original Assignee
Rebo-Plastic & Co KG GmbH
Rebo Plastic 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 Rebo-Plastic & Co KG GmbH, Rebo Plastic GmbH and Co KG filed Critical Rebo-Plastic & Co KG GmbH
Publication of EP0387404A1 publication Critical patent/EP0387404A1/de
Withdrawn legal-status Critical Current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
    • B65D19/003—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces
    • B65D19/0032—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element
    • B65D19/0034—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element forming a continuous plane contact 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
    • B65D2519/00009—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
    • B65D2519/00313—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
    • B65D2519/00343—Overall construction of the base surface shape of the contact surface of the base contact surface being substantially in the form of a panel
    • 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
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • B65D2519/00562—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements chemical connection, e.g. glued, welded, sealed

Definitions

  • the present invention relates to a pallet consisting of a deep-drawn molded part made of a thermoplastic material with stiffeners distributed over the molded part.
  • Such pallets are used for picking up, transporting and in particular also for ready-to-use, fixed storage of any objects, such as assembly parts, which can be removed from the pallet for further processing, for example by an industrial robot.
  • Such pallets usually have trough-like receiving recesses, ie so-called “nests”, into which the respective objects can be inserted for fixing the position, for which purpose the “nests” are adapted to the objects with regard to their contours. Instead of the "nests”, there may also be elevations between which the objects can be placed in a fixed manner.
  • the invention is therefore based on the object of creating a pallet of the type described at the outset, which has a very high degree of stability and torsional rigidity without any significant additional financial outlay during manufacture and is therefore also suitable for accommodating particularly heavy objects.
  • stiffeners consist of connection points each between two mutually adjacent wall sections of the molded part, the wall sections in the connection points being integrally connected to one another.
  • the pallet according to the invention has a very high rigidity, since the mutually adjacent walls support one another via the connection points, ie relative movements between the adjacent walls, as would occur in the event of bending and twisting, are effectively prevented by the integral connections according to the invention.
  • connection points can be formed after the actual production of the pallet in the deep-drawing process, for example by suitable welding devices as welding seams and / or welding points.
  • connection points are welded under negative pressure, ie are connected using the same material.
  • connection points are formed according to the invention during the actual vacuum deep-drawing process.
  • a specially adapted deep-drawing tool is used which, according to the invention, has shaped webs which engage the adjacent walls of the pallet between them.
  • these shaped webs have, in particular, slit-shaped recesses which are open at the edge in the demolding direction.
  • connection points are formed automatically by the generation of negative pressure during the deep-drawing process, in that the plastic material which is completely plasticized by heating "flows" through the recesses of the molding webs according to the invention, and connects in a cohesive, uniform manner, ie forms "material bridges". Because of this particularly advantageous measure, subsequent operations for forming the connection points are unnecessary.
  • the invention achieves particularly good dimensional stability and precise shaping in comparison to subsequent formation of the connection points, since according to the invention the molding tool is still "inside” the mold cavity of the pallet during the formation of the connection points. Therefore, too essentially constant wall thicknesses as well as a mechanical freedom from tension within the pallet.
  • a pallet 2 consists of a deep-drawn molded part 4 made of a thermo plastic, deep-drawn plastic flat material, in particular made of polyethylene or another suitable material.
  • the molded part 4 preferably has a rectangular shape with an outer peripheral edge wall 6, which in its lower region can merge into an outward-pointing foot edge 10 defining a standing plane 8.
  • the peripheral edge wall 6 is arranged approximately perpendicular to the foot edge 10 or to the standing plane 8.
  • the molded part 4 On its inner bottom surface 12 enclosed by the wall 6, the molded part 4 has a contour formed by elevations 14 or depressions 16, through which so-called “nests” are formed for the fixation of objects.
  • the contour of these "nests” is arbitrary, i.e. adapted to the respective objects, which is why the contour is indicated in Fig. 1 only by dashed lines.
  • the configuration of the peripheral edge is also basically arbitrary and is therefore also only shown in broken lines in some areas.
  • the pallet 2 according to the invention now has a plurality of stiffeners distributed over the molded part 4, which according to the invention consist of connecting points 20, in each of which two wall sections 22 of the molded part 4 arranged adjacent to one another are cohesively connected, in particular in the same material (see FIG. 2 and 3).
  • connection points 20 can be formed by spot or line weldings.
  • connection points 20 are designed as elongated material bridges 24 of uniform material, which are arranged approximately perpendicular to the standing plane 8 of the molded part 4 (see in particular FIGS. 2 and 3). These material bridges 24 preferably extend from the top 26 of the molded part 4 from at least up to half the total height of the molded part 4 in the direction of the standing plane 8 downwards. This can be seen in particular in FIG. 2.
  • the wall sections 22 which are integrally connected to one another in the connection points 20 can be formed by the peripheral edge walls 6 and / or by boundary walls of the receiving depressions 16, the positioning elevations 14 or also by transverse ribs (not shown) .
  • the wall sections 22 are preferably arranged approximately perpendicular to the standing plane 8.
  • connection points 20 can each be arranged in the region of channel-shaped stiffening beads 28 of the wall sections 22 or of the peripheral edge walls 6 arranged approximately perpendicular to the standing plane 8.
  • the wall sections 22 are “vacuum welded” in the connection points 20. This will be explained in more detail below with reference to FIG. 3.
  • the pallet 2 according to the invention is produced with the respective mutually adjacent wall sections 22 by a vacuum deep-drawing process known per se using a deep-drawing tool, the deep-drawing tool has shaped webs 30 according to the invention. A part of such a shaped web 30 is shown in section in FIG. 3.
  • the thermally plasticized plastic material lies in a manner known per se due to negative pressure on the contour of the deep drawing tool, ie also on the molding webs 30, whereby the adjacent wall sections 22 are formed.
  • the shaped webs 30 now each have, in the region of the connecting points 20 to be formed in the demolding direction 32 (illustrated by an arrow in FIG. 3), open-ended, in particular slit-shaped recesses 34.
  • the plasticized plastic material can "flow together" during the deep-drawing process due to the generation of negative pressure and the exposure to atmospheric pressure which thereby becomes effective, as a result of which the wall sections 22 automatically connect or weld to one another in a cohesive manner, ie the connection points 20 or the material bridges 24 are formed.
  • a demolding of the molded part 4, ie a removal of the molded part 4 from the deep-drawing tool in the demolding direction 32 is possible due to the open-edge configuration of the recesses 34.
  • the pallet 2 according to the invention is designed to be stackable.
  • the molded part 4 has an outer, peripheral circumferential edge 36 facing away from the standing plane 8 and a mold opening opposite it, which cannot be seen in FIG. 1.
  • This demolding opening is enclosed by a lower peripheral edge 38, which is followed by the foot edge 10 in the example shown.
  • the molded part 4 is shaped according to the invention in the region of the peripheral edges 36, 38 such that the demolding opening after a rotation of the mold partly 4 in the standing plane 8, preferably 180 ° disgruent to the upper peripheral edge 36 in its position before the rotation.
  • the demolding opening and the upper peripheral edge 36 are basically approximately congruent, which is why stacking of several pallets 2 is actually not possible or only to a limited extent.
  • the design according to the invention ensures that the pallet 2 can be stacked after a relative rotation of two pallets 2 to be stacked by 180 ° in the standing plane 8.
  • the molded part 4 in the region of the upper peripheral edge 36 has support surfaces 40 (see FIG. 1) which are recessed relative to the latter in the direction of the standing plane 8 such that in the stacked state (not shown) of two relative to one another by 180 ° twisted molded parts 4, the lower peripheral edge 38 or the foot edge 10 of the upper molded part 4 rests in regions on the contact surfaces 40 of the lower molded part 4.
  • This advantageous embodiment ensures a mutual fixation of the position of the stacked pallets 2 in that the respective lower pallet engages in the demolding opening of the upper pallet 2 by the distance between the upper peripheral edge 36 and the support surfaces 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)
EP89120747A 1989-03-17 1989-11-09 Tiefgezogene Kunststoff-Palette Withdrawn EP0387404A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903351U 1989-03-17
DE8903351U DE8903351U1 (de) 1989-03-17 1989-03-17 Tiefgezogene Kunststoff-Palette

Publications (1)

Publication Number Publication Date
EP0387404A1 true EP0387404A1 (de) 1990-09-19

Family

ID=6837239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120747A Withdrawn EP0387404A1 (de) 1989-03-17 1989-11-09 Tiefgezogene Kunststoff-Palette

Country Status (2)

Country Link
EP (1) EP0387404A1 (it)
DE (1) DE8903351U1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837106A1 (de) * 1998-08-17 2000-03-02 D.D.C. Planungs-, Entwicklungs- Und Management Ag Fahrpalette

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019336A1 (en) * 1979-05-11 1980-11-26 Wavin B.V. Plastics crate or tray comprising injection moulding points, method and mould for manufacturing such a crate or tray
FR2563188A2 (fr) * 1981-04-30 1985-10-25 Manujet Sa Caisse de manutention gerbable, emboitable et compatible avec les caisses a parois verticales

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019336A1 (en) * 1979-05-11 1980-11-26 Wavin B.V. Plastics crate or tray comprising injection moulding points, method and mould for manufacturing such a crate or tray
FR2563188A2 (fr) * 1981-04-30 1985-10-25 Manujet Sa Caisse de manutention gerbable, emboitable et compatible avec les caisses a parois verticales

Also Published As

Publication number Publication date
DE8903351U1 (de) 1989-05-11

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