EP1153675B1 - Material sheets with structures - Google Patents
Material sheets with structures Download PDFInfo
- Publication number
- EP1153675B1 EP1153675B1 EP01108886A EP01108886A EP1153675B1 EP 1153675 B1 EP1153675 B1 EP 1153675B1 EP 01108886 A EP01108886 A EP 01108886A EP 01108886 A EP01108886 A EP 01108886A EP 1153675 B1 EP1153675 B1 EP 1153675B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material strip
- raised
- strip
- edge
- features
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/20—Storage arrangements; Piling or unpiling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
Definitions
- the invention relates to a structure having material strips with out of the strip plane outstanding punching structures. Furthermore, the invention relates to a strip composite as well as the use of the material strips.
- Such strips of material are relatively difficult to transport because, for example, wanted out the streak level outstanding punching structures during transport not printed back into the plane be allowed to. This can be effected relatively expensive by intermediate layers which serve as spacers.
- the invention has for its object to provide a simple and secure way to stack the initially characterized material strips without damage.
- the problem is solved by at least a part of the outstanding Punch structures have the shape of a polygon, with an edge whose Length is less than two adjacent sides, connected to the material strip is that the two adjacent sides at their edges facing away from the edge by two more Pages are connected to each other, wherein the sides are symmetrical to a perpendicular bisector the edge are arranged and in each case an angle ⁇ of about 20 ° to 80 ° to the perpendicular bisector forming and wherein formed by the punching structures in the material strip punch openings one free cut parallel to the sides adjoining the edge Slit have.
- the punching structures serve as spacers and at the same time as fixation or centering several stripes against each other.
- the angle ⁇ is about 40 ° to 60 °.
- Another angle ⁇ between the mid-perpendicular on the edge and another Side is about 30 ° to 85 °, preferably 65 ° to 75 °. This allows relatively large distances can be achieved between the strips while accurately positioning.
- the width of the cut slots each have a ratio to the width the punching structure of about 1:10 to 1:40, the width of the cut slots is measured parallel to the longitudinal edges and the width of the punching structure perpendicular to the mid-perpendicular of the edge.
- the stamped structures an angle ⁇ of about 10 ° to 30 °, preferably about 20 °, to the vertical on the strip plane form.
- the specified dimensions ensure optimum stacking behavior.
- the strip of material may be formed of metal.
- the punching structures are symmetrical to the central axis of the Material strip are arranged, and that in the strip of material other structures, in particular punched structures are arranged.
- the strip composite formed from the strip of material according to the invention is according to the Invention characterized in that the punching structures of a strip of material in punched openings engage an adjacent strip of material, preferably that the other Pages of the punching structures of a strip of material each on a boundary edge of the cut free slots of the punching structures of an adjacent punched strip are.
- the structures having strips of material for the production of particular metallic lead frame can be used. Also a use for ladder frames From other conductive materials is conceivable and provided according to the invention.
- a strip of material 1 is shown made of copper.
- punching structures 2 in evenly spaced along the two longitudinal edges of the strip of material 1 arranged.
- Further punched structures 3 can be arranged on the material strip. These may serve as means for positioning the strips of material in further processing, However, they can also be functional in character within a strip of material manufactured leadframe have.
- FIG. 2 shows a stamping structure 2 projecting from the strip plane.
- the stamping structure 2 is connected at its edge 4 with the material strip 1.
- the other pages, so the to the Edge 4 adjacent sides 5 and the other connected sides 6 are symmetrical arranged to a perpendicular bisector of the edge 4.
- punching the punching structures 2 is adjacent to the adjacent sides 5 each have a slot 7 from the strip of material cut free, wherein the ratio of the width A of the cut-free slots 7 to the width B of the punching structure 2 is about 1: 22, wherein the angle ⁇ between the adjacent Pages 5 and the perpendicular bisector of the edge 4 about 50 ° and the angle ⁇ between another side 6 and the perpendicular bisector is about 70 °.
- a strip composite of two strips of material 1 is shown in a side view.
- the punching structures 2 form an angle ⁇ of about 20 ° to the vertical on the Strip level.
- the punching structures 2 of the lower material strip 1 engage in punched openings 8 of the upper strip of material 1 a.
- the other edges 6 of the punching structures 2 of the lower material strip 1 at a boundary edge of the cut-away Slots 7 of the punching openings 8 of the adjacent strip of material 1 at.
- vertical view (direction A) is this superposition arrangement in sections shown in Fig. 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Decoration Of Textiles (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Sliding-Contact Bearings (AREA)
- Exhaust Gas After Treatment (AREA)
- Rod-Shaped Construction Members (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Die Erfindung betrifft einen Strukturen aufweisenden Materialstreifen mit aus der Streifenebene herausragenden Stanzstrukturen. Des weiteren betrifft die Erfindung einen Streifenverbund sowie die Verwendung der Materialstreifen.The invention relates to a structure having material strips with out of the strip plane outstanding punching structures. Furthermore, the invention relates to a strip composite as well as the use of the material strips.
Derartige Materialstreifen sind relativ schwer transportierbar, da beispielsweise gewollt aus der Streifenebene herausragende Stanzstrukturen beim Transport nicht in die Ebene zurückgedruckt werden dürfen. Dies kann relativ aufwendig durch Zwischenlagen bewirkt werden, die als Abstandshalter dienen.Such strips of material are relatively difficult to transport because, for example, wanted out the streak level outstanding punching structures during transport not printed back into the plane be allowed to. This can be effected relatively expensive by intermediate layers which serve as spacers.
Der Erfindung liegt die Aufgabe zugrunde, eine einfache und sichere Möglichkeit anzugeben, die eingangs charakterisierten Materialstreifen ohne Beschädigung zu stapeln.The invention has for its object to provide a simple and secure way to stack the initially characterized material strips without damage.
Für die Materialstreifen wird die Aufgabe dadurch gelöst, dass mindestens ein Teil der herausragenden Stanzstrukturen die Form eines Vielecks aufweisen, das mit einer Kante, deren Länge kleiner ist als zwei angrenzende Seiten, mit dem Materialstreifen verbunden ist, dass die beiden angrenzenden Seiten an ihren der Kante abgewandten Enden durch zwei weitere Seiten miteinander verbunden sind, wobei die Seiten symmetrisch zu einer Mittelsenkrechten der Kante angeordnet sind und jeweils einen Winkel α von etwa 20° bis 80° zur Mittelsenkrechten bilden und wobei durch die Stanzstrukturen in dem Materialstreifen gebildete Stanzöffnungen parallel zu den an die Kante angrenzenden Seiten je einen freigeschnittenen Schlitz aufweisen. For the material strip, the problem is solved by at least a part of the outstanding Punch structures have the shape of a polygon, with an edge whose Length is less than two adjacent sides, connected to the material strip is that the two adjacent sides at their edges facing away from the edge by two more Pages are connected to each other, wherein the sides are symmetrical to a perpendicular bisector the edge are arranged and in each case an angle α of about 20 ° to 80 ° to the perpendicular bisector forming and wherein formed by the punching structures in the material strip punch openings one free cut parallel to the sides adjoining the edge Slit have.
Die Stanzstrukturen dienen als Abstandshalter und gleichzeitig als Fixierung oder Zentrierung mehrere Streifen gegeneinander. Vorteilhafter Weise beträgt der Winkel α etwa 40° bis 60°. Ein weiterer Winkel β zwischen der Mittelsenkrechten auf der Kante und einer weiteren Seite beträgt etwa 30° bis 85°, vorzugsweise 65° bis 75°. Damit können relativ große Abstände zwischen den Streifen erzielt werden bei gleichzeitig genauer Positionierung. Vorteilhafter Weise weist die Breite der freigeschnittenen Schlitze jeweils ein Verhältnis zur Breite der Stanzstruktur von etwa 1 : 10 bis 1 : 40 auf, wobei die Breite der freigeschnittenen Schlitze parallel zu deren Längskanten gemessen wird und die Breite der Stanzstruktur senkrecht zur Mittelsenkrechten der Kante. Insbesondere ist es vorteilhaft, dass die Stanzstrukturen einen Winkel γ von etwa 10° bis 30°, vorzugsweise etwa 20°, zur Senkrechten auf der Streifenebene bilden. Bei den angegebenen Abmessungen ist ein optimales Stapelverhalten gewährleistet. Der Materialstreifen kann aus Metall gebildet sein.The punching structures serve as spacers and at the same time as fixation or centering several stripes against each other. Advantageously, the angle α is about 40 ° to 60 °. Another angle β between the mid-perpendicular on the edge and another Side is about 30 ° to 85 °, preferably 65 ° to 75 °. This allows relatively large distances can be achieved between the strips while accurately positioning. Favorable Way, the width of the cut slots each have a ratio to the width the punching structure of about 1:10 to 1:40, the width of the cut slots is measured parallel to the longitudinal edges and the width of the punching structure perpendicular to the mid-perpendicular of the edge. In particular, it is advantageous that the stamped structures an angle γ of about 10 ° to 30 °, preferably about 20 °, to the vertical on the strip plane form. The specified dimensions ensure optimum stacking behavior. The strip of material may be formed of metal.
Vorteilhaft ist es insbesondere, dass die Stanzstrukturen symmetrisch zur Mittelachse des Materialstreifens angeordnet sind, sowie, dass in dem Materialstreifen weitere Strukturen, insbesondere gestanzte Strukturen, angeordnet sind.It is particularly advantageous that the punching structures are symmetrical to the central axis of the Material strip are arranged, and that in the strip of material other structures, in particular punched structures are arranged.
Der aus den erfindungsgemäßen Materialstreifen gebildete Streifenverbund ist gemäß der Erfindung dadurch charakterisiert, dass die Stanzstrukturen eines Materialstreifens in Stanzöffnungen eines benachbarten Materialstreifens eingreifen, vorzugsweise, dass die weiteren Seiten der Stanzstrukturen eines Materialstreifens jeweils auf einer Begrenzungskante der freigeschnittenen Schlitze der Stanzstrukturen eines benachbarten Stanzstreifens abgestützt sind.The strip composite formed from the strip of material according to the invention is according to the Invention characterized in that the punching structures of a strip of material in punched openings engage an adjacent strip of material, preferably that the other Pages of the punching structures of a strip of material each on a boundary edge of the cut free slots of the punching structures of an adjacent punched strip are.
Erfindungsgemäß kann der Strukturen aufweisende Materialstreifen zur Herstellung von insbesondere metallischen Leiterrahmen verwendet werden. Auch eine Verwendung für Leiterrahmen aus anderen leitfähigen Materialien ist denkbar und erfindungsgemäß vorgesehen.According to the invention, the structures having strips of material for the production of particular metallic lead frame can be used. Also a use for ladder frames From other conductive materials is conceivable and provided according to the invention.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung erläutert.Hereinafter, an embodiment of the invention will be explained with reference to a drawing.
In der Zeichnung zeigt
- Fig. 1
- die schematische Darstellung eines Materialsteifens,
- Fig. 2
- eine Stanzstruktur des Materialstreifens,
- Fig. 3
- einen Streifenverbund in der Seitenansicht und
- Fig. 4
- eine ausschnittsweise Ansicht aus Richtung A gem. Fig. 3.
- Fig. 1
- the schematic representation of a material stiffener,
- Fig. 2
- a punching structure of the material strip,
- Fig. 3
- a strip composite in the side view and
- Fig. 4
- a partial view from direction A gem. Fig. 3.
In Fig. 1 ist ein Materialstreifen 1 aus Kupfer dargestellt. In ihm sind Stanzstrukturen 2 in
gleichmäßigen Abständen längs den beiden Längskanten des Materialstreifens 1 angeordnet.
Weitere gestanzte Strukturen 3 können auf dem Materialstreifen angeordnet sein. Diese
können als Mittel zur Positionierung der Materialstreifen in der weiteren Verarbeitung dienende,
sie können allerdings auch funktionalen Charakter innerhalb eines aus dem Materialstreifen
hergestellten Leiterrahmens aufweisen.In Fig. 1, a strip of
Fig. 2 zeigt eine aus der Streifenebene herausragende Stanzstruktur 2. Die Stanzstruktur 2
ist an ihrer Kante 4 mit dem Materialstreifen 1 verbunden. Die übrigen Seiten, also die an die
Kante 4 angrenzenden Seiten 5 und die sie verbundenen weiteren Seiten 6 sind symmetrisch
zu einer Mittelsenkrechten der Kante 4 angeordnet. Beim Ausstanzen der Stanzstrukturen
2 wird benachbart zu den angrenzenden Seiten 5 jeweils ein Schlitz 7 aus dem Materialstreifen
freigeschnitten, wobei das Verhältnis der Breite A der freigeschnittenen Schlitze 7 zu
der Breite B der Stanzstruktur 2 etwa 1 : 22 beträgt, wobei der Winkel α zwischen den angrenzenden
Seiten 5 und der Mittelsenkrechten der Kante 4 etwa 50° und der Winkel β zwischen
einer weiteren Seite 6 und der Mittelsenkrechten etwa 70° beträgt.FIG. 2 shows a
In Fig. 3 ist ein Streifenverbund aus zwei Materialstreifen 1 in einer seitlichen Ansicht dargestellt.
Die Stanzstrukturen 2 bilden einen Winkel γ von etwa 20° zur Senkrechten auf der
Streifenebene. Die Stanzstrukturen 2 des unteren Materialstreifens 1 greifen in Stanzöffnungen
8 des oberen Materialstreifens 1 ein. Dabei liegen die weiteren Kanten 6 der Stanzstrukturen
2 des unteren Materialstreifens 1 an einer Begrenzungskante der freigeschnittenen
Schlitze 7 der Stanzöffnungen 8 des benachbarten Materialstreifens 1 an. In einer zu
Fig. 3 senkrechten Ansicht (Richtung A) ist diese Übereinanderanordnung ausschnittsweise
in Fig. 4 dargestellt.In Fig. 3 a strip composite of two strips of
Claims (10)
- Material strip with raised features punched out of the strip plane, characterized in that at least some of the raised features (2) are in the form of a polygon joined to the material strip (1) by an edge (4) which is shorter than the two adjacent sides (5), [and] in that the two adjacent sides (5) are joined to each other, starting at their ends remote from the edge (4), by two further sides (6), the sides being arranged symmetrically about a vertical bisector of the edge and each making an angle α of approximately 20° to 80° with the vertical bisector, and punched openings (8) formed in the material strip (1) by the raised features (2) comprising free-cut slits (7) parallel with the sides (5) adjacent to the edge (4).
- Raised material strip according to Claim 1, characterized in that the angle α is approximately 40° to 60°.
- Raised material strip according to Claim 1 or Claim 2, characterized in that the width of each free-cut slit (7) is in a proportion of approximately 1 : 10 to 1 : 40 to the width of the raised feature (2) parallel with the edge (4).
- Raised material strip according to any one of Claims 1 to 3, characterized in that the raised features (2) make an angle γ of approximately 10° to 30°, and preferably approximately 20°, with the normal to the strip plane.
- Raised material strip according to any one of Claims 1 to 4, characterized in that the material strip (1) is made of metal.
- Raised material strip according to any one of Claims 1 to 5, characterized in that the raised features (2) are disposed symmetrically about the centreline of the material strip (1).
- Raised material strip according to any one of Claims 1 to 6, characterized in that other features (3), particularly punched features, are also arranged in the material strip (1).
- Compound strip consisting of a plurality of raised material strips according to any one of Claims 1 to 7 stacked parallel one on top of another, characterized in that raised features (2) of a material strip (1) engage in punched openings (8) of an adjacent material strip (1).
- Compound strip [according to] Claim 8, characterized in that the further sides (6) of the raised features (2) of a material strip (1) are each supported on a bounding edge of a free-cut slit (7) of the punched opening (8) of an adjacent material strip (1).
- Use of raised material strips according to any one of Claims 1 to 7 for the production of metallic conductor frames.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10022102 | 2000-05-09 | ||
| DE10022102A DE10022102C1 (en) | 2000-05-09 | 2000-05-09 | Structured material strip to manufacture metal conductor frames has stamped structures projecting from material plane and having symmetrical shape forming slits |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1153675A2 EP1153675A2 (en) | 2001-11-14 |
| EP1153675A3 EP1153675A3 (en) | 2004-10-27 |
| EP1153675B1 true EP1153675B1 (en) | 2005-10-05 |
Family
ID=7641013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01108886A Expired - Lifetime EP1153675B1 (en) | 2000-05-09 | 2001-04-10 | Material sheets with structures |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1153675B1 (en) |
| CN (1) | CN1212223C (en) |
| AT (1) | ATE305831T1 (en) |
| DE (2) | DE10022102C1 (en) |
| ES (1) | ES2246269T3 (en) |
| MY (1) | MY130374A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6751836B2 (en) * | 2000-07-11 | 2004-06-22 | Richard A. Smith | Method of enabling the spacing of metal units |
| CN102360927A (en) * | 2011-09-07 | 2012-02-22 | 信源电子制品(昆山)有限公司 | Coiling laser spot welder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524601A (en) * | 1983-05-13 | 1985-06-25 | Bernardi Carl E | Automatic apparatus for downsetting lead frame strips |
| US4970579A (en) * | 1988-09-21 | 1990-11-13 | International Business Machines Corp. | Integrated circuit package with improved cooling means |
| DE19521022C2 (en) * | 1995-06-13 | 1997-04-10 | Heraeus Gmbh W C | Process for producing a layered composite |
-
2000
- 2000-05-09 DE DE10022102A patent/DE10022102C1/en not_active Expired - Fee Related
-
2001
- 2001-04-10 EP EP01108886A patent/EP1153675B1/en not_active Expired - Lifetime
- 2001-04-10 AT AT01108886T patent/ATE305831T1/en not_active IP Right Cessation
- 2001-04-10 DE DE50107591T patent/DE50107591D1/en not_active Expired - Fee Related
- 2001-04-10 ES ES01108886T patent/ES2246269T3/en not_active Expired - Lifetime
- 2001-05-04 MY MYPI20012101A patent/MY130374A/en unknown
- 2001-05-08 CN CN01116005.5A patent/CN1212223C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1153675A2 (en) | 2001-11-14 |
| CN1322610A (en) | 2001-11-21 |
| EP1153675A3 (en) | 2004-10-27 |
| ES2246269T3 (en) | 2006-02-16 |
| DE50107591D1 (en) | 2006-02-16 |
| ATE305831T1 (en) | 2005-10-15 |
| MY130374A (en) | 2007-06-29 |
| DE10022102C1 (en) | 2001-10-25 |
| CN1212223C (en) | 2005-07-27 |
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