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EP-4741308-A1 - TRAY FOR STORAGE OF PARTS, CRATE FOR TRANSPORT OF PARTS AND RELATED USE

EP4741308A1EP 4741308 A1EP4741308 A1EP 4741308A1EP-4741308-A1

Abstract

A tray (20) for storing parts (22) with the aim of transporting them, this tray (20) comprising: - a plane wall (24) comprising an upper face (24a) and a lower face, the upper face (24a) being capable of supporting the parts (22) to be transported, and - positioning studs (26) attached to the wall (24) and projecting from said upper surface (24a) so as to block the parts (22) to be transported, wherein the studs (26) are independent of one another and attached independently to the upper face (24a) of the wall (24), each of these studs (26) comprising a first portion (32a) made of rigid foam attached to the upper face (24a) and a second portion (32b) made of flexible foam capable of coming into contact with the parts (22) to be transported.

Inventors

  • GRUDZINSKI, Tomasz
  • PREUSS, MARTIN

Assignees

  • HUTCHINSON

Dates

Publication Date
20260513
Application Date
20241112

Claims (17)

  1. A tray (20) for storing parts (22) with the aim of transporting them, this tray (20) comprising: - a plane wall (24) comprising an upper face (24a) and a lower face, the upper face (24a) being capable of supporting the parts (22) to be transported, and - positioning studs (26) attached to the wall (24) and projecting from said upper surface (24a) so as to block the parts (22) to be transported, characterised in that the studs (26) are independent of one another and attached independently to the upper face (24a) of the wall (24), at least some of the studs (26a) comprising a first portion (32a) made of rigid foam attached to the upper face (24a) and a second portion (32b) made of flexible foam capable of coming into contact with the parts (22) to be transported.
  2. The tray (20) according to claim 1, wherein the first portion (32a) is XPE-based.
  3. The tray (20) according to claim 1 or 2, wherein the first portion (32a) has: - a density greater than 110Kg/m 3 , and preferably greater than or equal to 120kg/m 3 , and/or - a Shore 00 hardness greater than 20, and preferably greater than 30, and/or - an elongation at break greater than 110%, for example between 110 and 140%.
  4. The tray (20) according to one of the preceding claims, wherein the second portion (32b) is of the shape memory type.
  5. The tray (20) according to one of the preceding claims, wherein the second portion (32b) is based on EPDM foam.
  6. The tray (20) according to one of the preceding claims, wherein the second portion (32b) has: - a density less than or equal to 110kg/m 3 , and for example between 80 and 110kg/m 3 , and/or - a Shore 00 hardness of less than 20, preferably less than 13, and/or - an elongation at break greater than 150%, for example between 150 and 300%.
  7. The tray (20) according to one of the preceding claims, wherein at least some of the studs (26) are covered at least in part with a textile film or a textile layer (36).
  8. The tray (20) according to claim 7, wherein the film or layer (36) has a density of between 50 and 200 g/m 2 and preferably of the order of 100g/m 2 .
  9. The tray (20) according to one of the preceding claims, wherein the studs (26) are attached to the wall (24) by gluing and/or by attaching screws (38) which pass through the wall (24) and are screwed into the studs (26).
  10. The tray (20) according to one of the preceding claims, wherein several layers of parts (22) are stacked on each of the trays (20).
  11. A crate (10) for transporting parts (22), the crate comprising a container wherein several trays (20) are superimposed in accordance with one of the preceding claims, these trays (20) having walls (24) of the same dimensions.
  12. The crate (10) according to the preceding claim, wherein each tray (24), called the upper tray, which is superimposed on a tray, called the lower tray, rests on the tops of the studs (26) attached to this lower tray.
  13. The crate (10) according to claim 11 or 12, wherein parts (22) to be transported are located on each of the trays (20) and blocked by the studs (26) of these trays (20).
  14. The crate (10) according to claim 13, wherein several layers of parts (22) are stacked on each of the trays (20).
  15. The crate (10) according to claim 13 or 14, wherein at least some parts (22) or layers are separated from each other, at least in part, by protective sheets or textiles (42).
  16. The crate (10) according to claim 11, wherein it does not comprise parts to be transported and comprises a stack of trays for an empty return, the stack of trays comprising several pairs of trays stacked and housed in the crate, each pair of trays comprising two trays which have their upper faces (24a) facing each other and which have their studs (26) spaced apart from each other.
  17. A use of a tray (20) according to one of claims 1 to 10 or of a crate (10) according to one of claims 11 to 16 for transporting sealing parts for vehicles, in particular motor vehicles.

Description

Technical field of the invention The invention relates in particular to a tray for storage of parts with the aim of transporting them, as well as a crate for transporting these parts. Technical background It is known to transport parts in a transport crate. Conventionally, the crate has a generally parallelepiped shape and comprises a base and four side walls extending respectively along four sides of the base. Parts are arranged in the crate with the aim of transporting them. For example, these may be parts destined for an assembly plant, such as vehicle parts destined for a vehicle assembly plant. The parts can be relatively fragile, so they need to be blocked as securely as possible in the crate to prevent them from shifting during transport and colliding with each other. For example, the parts may have smooth surfaces that must not be scratched, or flexible portions that must not be deformed or crushed. This is particularly true of sealing parts for vehicles, especially automobiles. Depending on the size of the parts, they may need to be stacked in the crate. To achieve this, storage trays can be superimposed one on top of the other in the crate, and each tray can support a stack of several parts. In this configuration, the risk of displacement and impact of the parts is increased, which further reinforces the need to lock in the parts stacked on each tray. The present invention offers a simple, effective and economical solution to this need for prior art. Summary of the invention To this end, the invention proposes a tray for storing parts with the aim of transporting them, this tray comprising: a plane wall comprising an upper face and a lower face, the upper face being capable of supporting the parts to be transported, andpositioning studs attached to the wall and projecting from said upper surface so as to block the parts to be transported, characterised in that the studs are independent of one another and attached independently to the upper surface of the wall, at least some of the studs comprising a first rigid foam portion attached to the upper surface and a second portion made of flexible foam capable of coming into contact with the parts to be transported. The studs are used to block, i.e. to stall or to lock in, the parts to limit their movement during transportation. The studs are attached to the wall and rest on the parts to be transported. The studs therefore comprise two portions, each with a specific function. The first portion of each stud is made of rigid foam and enables the stud to be attached to the wall. It is therefore understood that each stud is attached to the wall by this first rigid portion. The second portion of each stud is made of flexible foam and is designed to come into contact with the parts for blocking purposes. In this application, the terms "rigid" and "flexible" refer to the hardness of the foam. It is understood that a rigid foam has a higher hardness than flexible foam. This means that the hardness of the first portion of each stud is greater than the hardness of the second portion of the stud. For example, if the hardness measured is type Shore 00, then the hardness of the flexible foam is less than 20 and the hardness of the rigid foam is greater than 20. The tray according to the invention may comprise one or more of the following characteristics, taken separately from each other or in combination with each other: the first portion is XPE-based;the first portion has a density greater than 110Kg/m3, and preferably greater than or equal to 120kg/m3;the first portion has a Shore 00 hardness greater than 20, and preferably greater than 30;the first portion has an elongation at break greater than 110%, and for example between 110 and 140%;the second portion is of the shape memory type;the second portion is based on EPDM foam;the second portion has a density less than or equal to 110kg/m3, and for example between 80 and 110kg/m3;the second portion has a Shore 00 hardness of less than 20, and preferably less than 13;the second portion has an elongation at break greater than 150%, and for example between 150 and 300%;at least some of the studs are covered with a textile film or a textile layer;- the film or layer comprises a polyester, a polyamide or a combination of the two;the film or layer has a density of between 50 et 200 g/m2 and preferably of the order of 100g/m2;- the film or layer covers two opposite sides of the stud, or even a top and/or a base of the stud; -- at least some of the studs, or not all of the studs are identical;-- the studs each have a generally parallelepiped shape;-- each of the first and second portions has a parallelepiped shape.-- the second portion of each stud occupies a volume of the stud which is less than the volume of the stud occupied by the first portion of this stud;-- the studs are all the same height;-- the number of studs is greater than ten;the studs are attached to the wall by gluing and/or by attaching screws which pass thr