EP0447720B1 - Bobine enroulée en couches successives de bande porteuse de composants électroniques - Google Patents

Bobine enroulée en couches successives de bande porteuse de composants électroniques Download PDF

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Publication number
EP0447720B1
EP0447720B1 EP90313864A EP90313864A EP0447720B1 EP 0447720 B1 EP0447720 B1 EP 0447720B1 EP 90313864 A EP90313864 A EP 90313864A EP 90313864 A EP90313864 A EP 90313864A EP 0447720 B1 EP0447720 B1 EP 0447720B1
Authority
EP
European Patent Office
Prior art keywords
carrier tape
hub
millimeters
reel
width
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.)
Expired - Lifetime
Application number
EP90313864A
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German (de)
English (en)
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EP0447720A1 (fr
Inventor
Ronald J. C/O Minnesota Mining And Eshleman
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0447720A1 publication Critical patent/EP0447720A1/fr
Application granted granted Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H55/00—Wound packages of filamentary material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/1942—Web supporting regularly spaced non-adhesive articles
    • 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
    • B65H2701/30—Handled filamentary material
    • B65H2701/37—Tapes

Definitions

  • the present invention relates to reels of component carrier tape (also called surface mount supplies carrier tape) of the type sent from the manufacturer of the carrier tape to a component manufacturer who will unwind the carrier tape from the reel and fill it with components.
  • component carrier tape also called surface mount supplies carrier tape
  • Surface mount supplies carrier tape or component carrier tape is used to transport components (e.g., electrical components such as resistors, capacitors, or integrated circuits) from a component manufacturer to a different manufacturer that assembles the components into new products, typically by having automated assembly equipment sequentially remove components from the carrier tape and assemble them into to the new products.
  • components e.g., electrical components such as resistors, capacitors, or integrated circuits
  • Such carrier tape is a polymeric strip that has been formed to have wall portions defining a series of identical pockets at predetermined uniformly spaced intervals along its length, which pockets are shaped to closely receive identical components the tape is adapted to transport (e.g., which pockets could, for example, have rectangular or generally "I” or “T” shapes in the plane of the strip, and could have flat or rounded bottoms to accommodate the shape of the components), which strip normally also has through openings uniformly spaced along one side to receive a drive sprocket by which the strip can be driven and to provide indexing holes that can be used for accurately locating the pockets along the tape with respect to assembly equipment.
  • the carrier tape is manufactured in a first manufacturing location, wound on a reel and transported to the supplier of the components it is intended to transport.
  • the component supplier unwinds the carrier tape from the reel, fills the pockets along the carrier tape with components, adheres a removable cover strip along the carrier tape over the component filled pockets, winds the component filled carrier tape with the attached cover strip onto a different typically smaller reel, and sends it to the user who feeds it from the reel into the assembly equipment which removes the components.
  • the carrier tape must have less than 1 millimeter non cumulative camber over a length of 250 millimeters. This means that when the carrier tape is unwound from the reel on which it is shipped to the component supplier and disposed on a planar surface, its elongate edges must not deviate from being straight by more than 1 millimeter in any 250 millimeter length of the carrier tape.
  • the component tape can easily be made to meet this specification. When the component tape is wound around a reel directly upon itself with the edges of all the wraps in a single plane for shipment to the component supplier (called “planetary winding" in the industry) it will remain generally as straight as it was when it was manufactured. Such planetary wound reels are limited in the amount of component tape they can hold, however.
  • the present invention provides a planetary wound reel of carrier tape that will consistently meet the camber specification noted above, provided though the carrier tape as originally manufactured met that specification.
  • Applicant has recognized that the inability of eight millimeter wide component tape shipped to component suppliers level wound edge to edge on reels with 203.2 millimeter (8 inch) outside diameter cores to consistently meet the camber specification noted above (even though the carrier tape as originally manufactured met that specification) was due to cold flow that occurs after the reel is level wound with the carrier tape in transition portions of the carrier tape adjacent the flanges of the reel in which the carrier tape changes its orientation with respect to the axis of the hub between successive layers of wraps, and has found a solution to that problem.
  • Such a hub diameter (e.g., about 226 millimeters (8.9 inches) for 8 millimeter wide component carrier tape) should allow the component carrier tape to normally meet the camber specification noted above despite cold flow which will occur in the transition portions of the carrier tape, as will be explained in greater detail below, and meeting that specification for 8 millimeter wide component carrier tape can be virtually assured through use of even a larger preferred 355.6 millimeter (14 inch) diameter reel hub.
  • combination 11 generally comprises (1) a length of component carrier tape 10 having elongate edges and a uniform width between its edges; and (2) a reel 14 including a hub 15 having an axis 16, opposite axially spaced ends and a cylindrical peripheral surface 18 between its ends, and a pair of flanges 19, one fixed to the hub 15 at each of its ends and projecting radially from the hub 15, the flanges 19 having opposed inner surfaces spaced by a distance (e.g., 76.2 millimeters or greater) significantly greater than the width of carrier tape 10.
  • a distance e.g., 76.2 millimeters or greater
  • the component carrier tape 10 is helically level wound around the peripheral surface 18 of the hub 15 in layers with the wraps of carrier tape 10 in each layer being disposed edge to edge so that those wraps are displaced axially from each other by the width of the carrier tape 10, with the opposite edges of wraps of carrier tape 10 in successive layers being angled in opposite directions with respect to the axis 16 of the hub 15, and with transition portions 20 of the carrier tape 10 located adjacent the flanges 19 of the reel 14 in which transition portions 20 the carrier tape 10 changes its orientation with respect to the axis 16 of the hub 15 between successive layers of wraps.
  • the carrier tape 10 is unitary, can be made to have a variety of uniform widths between its edges (e.g., 8, 12, 16, 24, 32 or 44 millimeters), and is made of a thin polymeric material (e.g., any thermoplastic crystalline or non crystalline material such as polyester, polycarbonate, polypropylene, styrene, butadiene, ABS plastic, etc. in the range of about 0.012 to 0.04 centimeter thick, and typically 0.025 centimeter thick) so that it is flexible.
  • the carrier tape 10 comprises a strip like portion 22 defining a top surface for the tape 10, and wall portions defining a multiplicity of similarly shaped pockets 24 spaced along the carrier tape 10 and opening through its top surface.
  • the wall portions may or may not include anti nesting shoulders for restricting entry of side wall portions defining the pockets 24 in one wrap of the carrier tape 10 on a reel into the pockets 24 in a wrap of carrier tape 10 beneath it as is described and claimed in U.S. Patent No. 4,898,275 issued February 6, 1990, the content whereof is incorporated herein by reference.
  • the carrier tape 10 also has a conventional series of equally spaced and sized through openings 26 along one edge of the strip like portion 22 which will receive the teeth of a drive sprocket by which the carrier tape 10 may be driven through automated equipment which loads components into the pockets 24 or removes components from the pockets 24.
  • the carrier tape 10 has an opening generally centered in the bottom wall of each of the pockets 24 as is required by an industry standard to allow the presence of a component in a pocket 24 to be sensed, or to allow access for a probe that facilitates removal of a component from the pocket 24.
  • the hub 15 of the reel 14 is preferably a stiff hollow cylindrical tube of paper material, and the flanges 19 are preferably discs of a corrugated cardboard material attached to the ends of the hub 15 by a plurality of staples 28.
  • the flanges 19 have central openings 30 around which are fastened the ends of a hollow cylindrical reinforcing journal tube 31 (also of paper material) extending between the flanges 19 and through which openings 30 and tube 31 a spindle may be positioned to rotatably support the reel 14.
  • the flanges also have radially extending openings 32 that afford visual inspection of the amount of component carrier tape 10 remaining on the reel 14, and drive openings 33 adjacent the openings 30 in which an external drive member may be positioned to afford rotational driving engagement with the reel 14.
  • the flanges 19 of the reel 14 are compressed around their peripheries to restrict engaging the edges of component carrier tape 10 being wound onto or off of the hub 15, and may also be compressed or creased along rectangularly disposed lines 34 ending in the openings 32 to afford bending portions of the flanges 19 away from the opposite flange 19 along the lines 34 to either afford visual inspection of the amount of component carrier tape 10 remaining on the reel 14, or to reduce the diameter of the reel 14 to facilitate its disposal, preferably to a recycler of paper products.
  • Figure 5 there is illustrated one flange 19 of the reel 14 and successive wraps designated Z1 and Z2 of the component carrier tape 10 in different layers joined by one of the transition portions 20 of the component carrier tape 10 that are curved to allow those wraps Z1 and Z2 to be angled in opposite directions with respect to the axis 16 of the hub 15, and which curvature will result from cold flow in the carrier tape 10 caused by such angling in opposite directions.
  • reels 14 with the minimum diameter hubs 15 that can be determined by the above formula (e.g., about 226 millimeters (8.9 inches) for 8 millimeter (0.31 inch) wide component carrier tape; about 274 millimeters (10.8 inches) for 12 millimeter (0.47 inch) wide component carrier tape; about 317.5 millimeters (12.5 inches) for 16 millimeter (0.63 inch) wide component carrier tape; about 388.6 millimeters (15.3 inches) for 24 millimeter (0.94 inch) wide component carrier tape; about 449.6 millimeters (17.7 inches) for 32 millimeter (1.26 inch) wide component carrier tape; about 527.1 millimeters (20.7 inches) for 44 millimeter (1.73 inch) wide component carrier tape; and about 594.4 millimeters (23.4 inches) for 56 millimeter (2.2 inch) wide component carrier tape) would provide little margin for errors that might occur in level winding on the carrier tape 10 or for the approximation described above that is incorporated in the formula.
  • a reel 14 that has a hub 15 diameter that is significantly above the minimum diameters indicated by the above formula, such as a reel 14 with a 355.6 millimeter (14 inch) diameter for either 8 or 12 millimeter wide component carrier tapes 10.

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  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Packaging Frangible Articles (AREA)

Claims (3)

  1. Combinaison d'une bande porteuse de composants électroniques ayant des bords allongés, et une largeur uniforme entre lesdits bords; et
       une bobine (14) comprenant un moyeu (15) ayant un axe (16), des extrémités espacées axialement opposées et une surface périphérique cylindrique (18) entre lesdites extrémités, et une paire de rebords (19), fixés audit moyeu (15) près de chacune desdites extrémités et faisant saillie radialement à partir dudit moyeu (15), lesdits rebords ayant des surfaces intérieures opposées espacées par une distance essentiellement plus grande que la largeur de ladite bande porteuse (10);
       ladite bande porteuse (10) d'éléments électroniques étant enroulée en couches successives d'une manière hélicoidale autour de la surface périphérique (18) dudit moyeu (15), les enroulements de la bande porteuse (10) dans chaque couche étant disposés bord à bord de façon que ces enroulements soient décalés axialement l'un par rapport à l'autre par la largeur de la bande porteuse (10), et avec les bords opposés des enroulements de la bande porteuse (10) en couches successives faisant des angles de direction opposée par rapport à l'axe (16) du moyeu (15);
       ladite surface périphérique (18) du moyeu (15) ayant un diamètre minimum "D" déterminée par la formule D = 2/π (7813)² - (7813-W)²
    Figure imgb0011
        où "W" est la largeur en millimètre de la bande porteuse (10).
  2. Combinaison selon la revendication 1, dans laquelle la largeur de ladite bande porteuse est de 8 millimètres, et le diamètre dudit mandrin est de 355.6 millimètres (14 pouces).
  3. Combinaison selon la revendication 1, dans laquelle la largeur de ladite bande porteuse est de 12 millimètres, et le diamètre dudit mandrin est de 355.6 millimètres (14 pouces).
EP90313864A 1990-03-14 1990-12-19 Bobine enroulée en couches successives de bande porteuse de composants électroniques Expired - Lifetime EP0447720B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49344090A 1990-03-14 1990-03-14
US493440 1990-03-14

Publications (2)

Publication Number Publication Date
EP0447720A1 EP0447720A1 (fr) 1991-09-25
EP0447720B1 true EP0447720B1 (fr) 1993-12-22

Family

ID=23960234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90313864A Expired - Lifetime EP0447720B1 (fr) 1990-03-14 1990-12-19 Bobine enroulée en couches successives de bande porteuse de composants électroniques

Country Status (6)

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EP (1) EP0447720B1 (fr)
JP (1) JP2846488B2 (fr)
KR (1) KR100223710B1 (fr)
DE (1) DE69005437T2 (fr)
MY (1) MY104631A (fr)
PH (1) PH30856A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7585444B2 (en) * 2005-06-14 2009-09-08 Illinois Tool Works Inc. Method for reducing camber in coiled plastic ribbon or tape
JP6750354B2 (ja) * 2015-07-22 2020-09-02 マックス株式会社 リール
CN109179016B (zh) * 2018-08-09 2020-04-21 业成科技（成都）有限公司 卷材及其制备方法
DE202024104215U1 (de) * 2024-07-26 2025-10-29 Tridonic Gmbh & Co. Kg Wickelrolle für LED-Flextapes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898275A (en) * 1989-05-25 1990-02-06 Minnesota Mining And Manufacturing Company Non nesting component carrier tape

Also Published As

Publication number Publication date
DE69005437T2 (de) 1994-07-07
JPH05221587A (ja) 1993-08-31
MY104631A (en) 1994-04-30
PH30856A (en) 1997-12-09
KR100223710B1 (ko) 1999-10-15
JP2846488B2 (ja) 1999-01-13
EP0447720A1 (fr) 1991-09-25
DE69005437D1 (de) 1994-02-03
KR910016596A (ko) 1991-11-05

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