EP1982938B1 - Procédé de stockage de demi-produits plats en forme de bande - Google Patents

Procédé de stockage de demi-produits plats en forme de bande Download PDF

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Publication number
EP1982938B1
EP1982938B1 EP08033515A EP08033515A EP1982938B1 EP 1982938 B1 EP1982938 B1 EP 1982938B1 EP 08033515 A EP08033515 A EP 08033515A EP 08033515 A EP08033515 A EP 08033515A EP 1982938 B1 EP1982938 B1 EP 1982938B1
Authority
EP
European Patent Office
Prior art keywords
semi
winding core
axis
larger
finished product
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
EP08033515A
Other languages
German (de)
English (en)
Other versions
EP1982938A1 (fr
Inventor
Oliver Dr. Türk
Stefan Jakobs
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.)
POLYNT GmbH
Original Assignee
POLYNT 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 POLYNT GmbH filed Critical POLYNT GmbH
Publication of EP1982938A1 publication Critical patent/EP1982938A1/fr
Application granted granted Critical
Publication of EP1982938B1 publication Critical patent/EP1982938B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/14—Kinds or types of circular or polygonal cross-section with two end flanges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/18—Form of handled article or web
    • B65H2701/184—Wound packages
    • B65H2701/1844—Parts concerned
    • B65H2701/18442—Core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/18—Form of handled article or web
    • B65H2701/184—Wound packages
    • B65H2701/1848—Dimensional aspect
    • B65H2701/18486—Non-cylindrical form, e.g. flat bobbin

Definitions

  • the invention relates to a method for stocking flat, sheet-like semi-finished products, in particular of fiber-matrix semi-finished products with thermoset or thermoplastic matrix.
  • the invention is further directed to a supply reel for flat, sheet-shaped semifinished product, in particular for fiber-matrix semifinished product with duroplastic or thermoplastic matrix, which is suitable for carrying out the method according to the invention.
  • Sheet-like fiber-matrix semi-finished products are semi-finished products which consist of reinforcing fibers, mainly glass fibers or carbon fibers, which are impregnated with a plastic matrix.
  • the matrix may be a thermoset or thermoplastic.
  • Thermoplastic matrix semi-finished fiber matrix materials are often referred to as SMC (Sheet Molding Compound).
  • Fiber-matrix semi-finished products with a thermoplastic matrix are available in particular as LFT (long-fiber reinforced thermoplastics) and as GMT (glass mat reinforced thermoplastics).
  • LFT long-fiber reinforced thermoplastics
  • GMT glass mat reinforced thermoplastics
  • thermoplastic matrix semi-finished products for door panels or luggage compartment covers for motor vehicles or the like
  • SMC is used for the production of automotive exterior parts such as, for example, trim parts of truck tractors.
  • the flat semi-finished products in which the reinforcing fibers are usually present as cut fibers, but can also occur in mat or in fabric form, can be cut and further processed by means of extrusion to finished components. This makes it particularly economical body parts for cars, sports equipment and components for the air and Aerospace industry are produced, and it is also possible to insert additional fasteners in the mold during pressing and to connect firmly in the manufacture of the component with the fiber composite material.
  • the flat material produced in long webs is usually arranged on a carrier film of polyamide or polyethylene and then either folded into cartons or wound onto a reel.
  • these have a winding core with a diameter of usually 250 mm, on which then a web length is wound with a total weight of about 350 kg.
  • each 300 to 350 kg of semi-finished supporting supply reels are supplied to the material processing producers, usually in a supply and transport shelf, which can accommodate four such roles, where then the semi-finished from the supply reel and the carrier film is withdrawn before a Section of the required length of the semifinished product in a press or the like. transformed into the finished product and cured.
  • the supply reels must be changed by the producer and processor of the material, which forces an interruption of the production. Assuming, for example, that for each component to be produced from the semifinished product an amount of 20 kg is processed and the cycle time for each component is four minutes, this requires a change of the approximately 300 kg of wound supply reels after only one hour.
  • EP 1 038 814 A2 is a winding system for sheets of thermoset compound compounds known to be used in the transport rollers for fiber-matrix semi-finished products, which have a width of 1.50 m and a diameter of the winding core of 400 to 600 mm. Due to the larger hub can be wound on such transport rollers also more web-shaped fiber-matrix semifinished than in the hitherto still mostly used 350 kg rollers.
  • the mass and size ratios in such large rolls are the same as in the standard rolls, ie, the amount of wound onto the winding core larger diameter web material is directly proportional to the volume of the winding core.
  • the object of the invention is to provide a method and a particularly suitable for carrying out supply reel, whereby a larger amount of sheet-like semifinished than in the hitherto mainly used standard containers can be stored without this undermines the basis weight constancy of wound on the reel material.
  • the supply reel according to the invention is characterized in that the winding core of the reel has a non-circular, symmetrical to two mutually perpendicular half-axes of different sizes cross-section.
  • the winding core may, for example, have a substantially elliptical or oval cross-section.
  • the size ratio of the larger half-axis to the smaller half-axis is preferably in the range of 1.25 to 3, in particular in the range between 1.35 and 2.75. It is for example possible that the larger half-axis has a length between 225 and 325 mm and the smaller half-axis has a length between 125 and 220 mm.
  • the winding core may also have an approximately diamond-shaped, rounded in the corners and / or flattened cross-section, wherein the cross section of the winding core in the apex areas of the larger half-axes preferably rounded approximately circular segment and extending in the apex areas of the smaller half-axes advantageously with approximately parallel to the larger half-axes Flattening is provided, which merge with the formation of radii or circular arcs in the adjacent sides of the diamond-shaped basic shape.
  • Such a design can be easily produced, for example, from welded steel segments.
  • Such a winding core is for example from the GB 2 296 229 A known.
  • a supply reel according to the invention can be arranged with the wound on the winding core semi-finished in a storage and / or transport rack and fixed therein against rotation.
  • a larger proportion of the weight of the wound web is removed directly into the winding core, whereby the absorbed by the material itself tensile forces are reduced and the pressure loads that the material has less than a supply reel with a cylindrical winding core on which the same amount of semifinished product is wound up.
  • the winding speed is not constant at a constant rotational speed of the reel.
  • it has been shown that such a procedure is not required in most cases, because the winding and unwinding of the material takes place even with constant drive speed for the reel with great reliability and quality.
  • 10 designates a supply reel for winding and storing a flat, sheet-like semifinished product 11, namely a thermosetting matrix fiber matrix strip arranged on a carrier film (not illustrated), as it is also known under the name "SMC” (Sheet Molding Compound ) is known.
  • SMC Sheet Molding Compound
  • the supply reel consists essentially of a central winding core 12, which is provided at its two front ends with thrust washers 13, which prevent damage to the edges of the wound on the winding core semifinished product.
  • the thrust washers are provided on the outside with hexagonal end plates, which allow not only in a particularly simple manner a correct Oriendtechnik the hub relative to the horizontal, for example, during transport and storage of the reel, but also a space-saving stacking.
  • the winding core has a non-circular cross-section, wherein it is symmetrical to two mutually perpendicular half-axes 14, 15 of different sizes.
  • the winding core 12 has an elliptical cross-section, wherein the size ratio of the larger half-axis 14 to the smaller half-axis 15 is about 1.4.
  • the length L of the larger half-axis 14 is about 275 mm in both illustrated embodiments, the length l of the smaller half-axis 15 is about 200 mm.
  • the cross-sectional shape of the winding core 12 is derived from a rhombus, the illustration in Fig.
  • the winding core is rounded in its major semiaxial 14 intersecting corner regions 17 with a comparatively large radius and in which the small half-axes 15 intersecting vertex areas 18 with parallel to the larger half-axis 14 extending flats 19, the formation of Radii 20 in the adjacent sides 21 of the diamond-shaped basic shape 16 pass.
  • the material unwound from the oval / elliptical core reel according to the present invention in an amount of almost 1,900 kg was checked for warping or deformation while being wound on the small rolls. No distortions or deformations could be detected.
  • the quality of the material was comparable to that regularly achieved by standard rolls of about 350 kg net weight.
  • the basis weight of the material unwound from the supply reel according to the invention was likewise determined at different positions of the winding core. For this purpose, each 100 cm 2 large specimens were detached from the unwound semifinished product web.
  • the basis weights determined therefrom and their deviation relative to the original weight per unit area of the material before being wound up on the supply reel according to the invention and storage over a period of five days are reproduced in Table 1. It can be seen that the deviations from the original weight, which are in the range of ⁇ 50 g per m 2 , represent an excellent value, especially considering that nearly 1,900 kg were on the supply reel according to the invention.
  • Comparable values were also obtained when the material was stored on the supply reel according to the invention over a comparatively long period of two weeks. Even in such a case, no warping and deformation of the material stored for more than two weeks when wrapping on other (standard) rolls could be detected.
  • the deviations of basis weight from baseline were between -2.2 and + 3.5%, the deviations being essentially independent of the relative position of the tested material to the spool core, and given a wound amount of 1700 kg and the comparatively long storage period as must be considered surprisingly low.
  • the invention is not limited to the illustrated and described embodiments.
  • other cross-sectional shapes of the winding core are conceivable, for example, an oval cross section, in particular those cross sections in which the ratio of the lengths of the larger half axis to the smaller half axis is still significantly greater than in the illustrated and described Examples.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (11)

  1. Procédé de mise en réserve de produits semi-finis plats, en forme de bande, à matrice et fibres, dont la matrice est thermodurcissable ou thermoplastique, dans lequel le produit semi-fini plat (11) en forme de bande est enroulé sur un enrouleur de stockage (10) dont le mandrin d'enroulement (12) a une section transversale non circulaire et symétrique par rapport à deux demi-axes (14, 15) perpendiculaires l'un à l'autre et de tailles différentes,
    caractérisé en ce que
    après l'enroulement du produit semi-fini (11) sur le mandrin d'enroulement (12) et avant le déroulement du produit semi-fini l'enrouleur de stockage (10) est orienté essentiellement de telle sorte que le plus grand des deux demi-axes (14) s'étende au moins sensiblement en parallèle à l'horizontale (22).
  2. Procédé selon la revendication 1, caractérisé en ce que l'enrouleur de stockage (10) chargé du produit semi-fini (11) est enroulé sur le mandrin d'enroulement (12) dans un bâti d'entreposage et/ou de transport et y est fixé de manière à ne pouvoir pas tourner.
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce qu'après un déroulement ou une extraction partielle du produit semi-fini (11) hors de l'enrouleur de stockage (10), ce dernier est de nouveau arrêté dans une position dans laquelle le plus grand des deux demi-axes (14) du mandrin d'enroulement (12) est situé au moins sensiblement en parallèle à l'horizontale (22).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que pour l'enroulement et/ou le déroulement du produit semi-fini (11) sur le mandrin d'enroulement (12) ou hors de ce dernier, l'enrouleur de stockage (10) est entraîné à une vitesse de rotation variable.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que le mandrin d'enroulement (12) présente une section transversale essentiellement elliptique ou ovale.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le rapport de grandeur entre le plus grand demi-axe (14) et le plus petit demi-axe (15) est compris dans la plage de 1,25 à 3.
  7. Procédé selon la revendication 6, caractérisé en ce que le rapport de grandeur entre le plus grand demi-axe (14) et le plus petit demi-axe (15) est compris dans la plage de 1,35 à 2,75.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que le plus grand demi-axe (14) présente une longueur (L) comprise entre 225 et 325 mm et le plus petit demi-axe (15) d'une longueur (1) comprise entre 125 et 220 mm.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que le mandrin d'enroulement (12) présente une section transversale sensiblement en forme de losange dont les sommets sont arrondis et/ou aplatis.
  10. Procédé selon la revendication 9, caractérisé en ce que dans les zones des sommets (17) du plus grand demi-axe (14), la section transversale du mandrin d'enroulement (12) est arrondie sensiblement en forme de segment de cercle et en ce que dans les zones des sommets (18) du plus petit demi-axe (15), elle est dotée de méplats (19) qui s'étendent sensiblement en parallèle au plus grand demi-axe (14), les méplats se prolongeant en les côtés voisins (21) de la forme de base (16) du losange en formant des rayons (20) ou des arcs de cercle.
  11. Procédé selon l'une des revendications 6 à 10, caractérisé en ce que le mandrin d'enroulement (12) est constitué de segments d'acier soudés les uns aux autres.
EP08033515A 2007-04-19 2008-04-09 Procédé de stockage de demi-produits plats en forme de bande Not-in-force EP1982938B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007018921A DE102007018921A1 (de) 2007-04-19 2007-04-19 Verfahren zum Bevorraten von flächigen, bahnförmigen Halbzeugen sowie Vorratshaspel für flächiges, bahnförmiges Halbzeug

Publications (2)

Publication Number Publication Date
EP1982938A1 EP1982938A1 (fr) 2008-10-22
EP1982938B1 true EP1982938B1 (fr) 2011-05-18

Family

ID=39720415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08033515A Not-in-force EP1982938B1 (fr) 2007-04-19 2008-04-09 Procédé de stockage de demi-produits plats en forme de bande

Country Status (3)

Country Link
EP (1) EP1982938B1 (fr)
AT (1) ATE509873T1 (fr)
DE (1) DE102007018921A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104176564A (zh) * 2014-08-20 2014-12-03 常州常利来电子有限公司 锡丝绕线盘
CN111792418B (zh) * 2020-07-20 2022-04-29 泉州盛协科技有限公司 一种用于柔性平面玻璃的收卷机械及其收卷方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2299113A (en) * 1939-12-08 1942-10-20 William F Stahl Coil form and the like
DE3314489A1 (de) * 1983-04-21 1984-10-25 Continental Gummi-Werke Ag, 3000 Hannover Wickelhuelse fuer gummistreifen
GB2296229A (en) * 1994-12-20 1996-06-26 Alform Extrusions Ltd Winding drum
DE19710331C2 (de) * 1997-03-13 2001-10-04 Beiersdorf Ag Wickelkern
DK1038814T3 (da) 1999-03-23 2004-08-16 Menzolit Fibron Gmbh Oprulningssystem for baner af duroplastforbindelser
DE19913032A1 (de) * 1999-03-23 2000-09-28 Menzolit Fibron Gmbh Aufwickelsystem für in Bahnen hergestellte duroplastische Compoundmassen, insbesondere SMC-Platten
EP1413537B1 (fr) * 2001-07-11 2006-12-20 Bridgestone Corporation Procede et dispositif de rangement d'un element long a deformation plastique
US20060180702A1 (en) * 2004-11-08 2006-08-17 Pfeifer Thomas A Tubular interconnecting support structure

Also Published As

Publication number Publication date
EP1982938A1 (fr) 2008-10-22
DE102007018921A1 (de) 2008-10-30
ATE509873T1 (de) 2011-06-15

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