WO2000076684A1 - Matrice d'etirage pour feuille metallique enduite de resine et procede mettant en oeuvre cette matrice - Google Patents

Matrice d'etirage pour feuille metallique enduite de resine et procede mettant en oeuvre cette matrice Download PDF

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Publication number
WO2000076684A1
WO2000076684A1 PCT/JP2000/003936 JP0003936W WO0076684A1 WO 2000076684 A1 WO2000076684 A1 WO 2000076684A1 JP 0003936 W JP0003936 W JP 0003936W WO 0076684 A1 WO0076684 A1 WO 0076684A1
Authority
WO
WIPO (PCT)
Prior art keywords
ironing
die
angle
incident angle
resin
Prior art date
Application number
PCT/JP2000/003936
Other languages
English (en)
Japanese (ja)
Inventor
Keiichi Shimizu
Yasuyuki Ikeda
Shin-Ichi Taya
Original Assignee
Toyo Kohan Co.,Ltd.
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 Toyo Kohan Co.,Ltd. filed Critical Toyo Kohan Co.,Ltd.
Priority to AU52493/00A priority Critical patent/AU5249300A/en
Publication of WO2000076684A1 publication Critical patent/WO2000076684A1/fr

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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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/30—Deep-drawing to finish articles formed by deep-drawing
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/28—Deep-drawing of cylindrical articles using consecutive dies

Definitions

  • the present invention relates to an ironing die for resin-coated metal sheets and an ironing method using the same.
  • Blanks are punched from a resin-coated metal plate with resin coated on both sides of an IC metal plate, formed into a cup shape by deep drawing, and then ironed to reduce the thickness of the side wall of the wrench and extend it.
  • a processing method and an ironing die used for the method are disclosed in Japanese Patent No. 2825203 and Japanese Patent Publication No. 1997-25828.
  • the frusto-conical entrance surface (die surface) of the ring-shaped die is narrowed by an inclination angle ⁇ of 1 to 4 °, At the end, a land with a short length parallel to the side wall of the nip is provided, and it has an outlet surface that is widened from the end by an inclination angle of 5 to 15 °, and has a thermal conductivity of 5 OW / mt: or more.
  • an ironing die formed from a wear-resistant material having the same, and a method of ironing a cup using the ironing die while p-supplying a cooling liquid to form a can body.
  • a land portion having a smaller die angle than the preceding stage (die angle: 3 to 10 °) is provided at the rear of the die surface as shown in FIG.
  • An ironing die having a radius of curvature (l to 100 ⁇ m) at the boundary between the former stage and the latter stage, and a method of ironing a resin-coated metal plate using the ironing die are disclosed.
  • the ironing die 11 disclosed in Japanese Patent No. 285-2504 is disclosed as a ladder.
  • an inclined angle is provided on the die entrance surface 1 to reduce the inner diameter of the die, and the end is parallel to the cup side wall.
  • a die with a short length land 21 and a die exit surface 2 that is widened by the inclination angle (relief angle) to widen the inner diameter of the die from its end is an aluminum alloy plate that is not coated with resin.
  • the ironing die 11 disclosed in Japanese Patent Publication No. 285858/1997 has a die angle of 3 to 10 ° at the rear of the die entrance surface 1 as shown in Fig. 2.
  • a land part 21 having a land angle SL smaller than the former die angle ⁇ d is provided with a radius of curvature of 1 to 100 m at the boundary between the former stage and the latter stage.
  • the land 21 has an inclination angle, and there is virtually no portion parallel to the cup side wall, and the land 21 has a constant inclination angle. (Relief angle) It is characterized in that it is directly connected to the die exit surface 2 that is widened by the clearance angle. It is clear from the figure that the land 2 1 intersects with the die exit surface 2
  • the dice is minimized, and the difference between the die diameter and punch diameter at this point, that is, the clearance, determines the thickness of the side wall of the cup.
  • land part 2 1 and the die exit surface 2 intersect at a point in the cross-section (actually, a perimeter that does not have a width), so wear of this part increases, the die diameter increases, and as a result, the thickness of the cup side wall increases, This has the drawback that the height of the side wall is easily reduced and is not practical.
  • an ironing container having a sufficient height can be obtained by sufficiently reducing the thickness of the side wall of the wrench in the ironing process. It is an object of the present invention to provide an ironing die for a resin-coated metal plate, which is unlikely to cause damage, and an ironing method using the same. Disclosure of iD invention
  • the ironing die of the present invention is an ironing die in which the thickness of the side wall of the cup is reduced by inserting a punch into the die, and the front surface incident angle of 3 to 8 ° and the incident angle of 1 to 4 ° are formed on the die surface. And a dice angle that is greater than 0 ° and equal to or less than 4 °, which is obtained by subtracting the latter incident angle from the former incident angle.
  • a cup formed of a resin-coated metal plate is placed on a punch, and an incident angle including a former stage having a larger incident angle than the latter incident angle on the die surface and the latter incident angle is defined as The thickness of the side wall of the forceps is reduced and extended by passing the ironing die.
  • the angle of the latter incident angle is 1 to 4 °
  • the angle of the former incident angle is 3 to 8 °
  • the angle obtained by subtracting the latter incident angle from the former incident angle exceeds 0 °. It is preferable that the angle be 4 ° or less.
  • FIG. 1 is a schematic sectional view showing an example of a conventional ironing die.
  • FIG. 2 is a schematic sectional view showing another example of the conventional ironing die.
  • FIG. 3 shows the structure of the invention. It is a schematic sectional drawing which shows a beveling die.
  • the pre-incident angle of 3 to 8 ° and the angle of 1 to 4 ° are applied to the die surface.
  • Ij- is the latter incident angle, and the angle obtained by subtracting the latter incident angle from the former incident angle is 0.
  • the ironing die 11 of the present invention has a front entrance angle ⁇ , a rear entrance angle, and a land 2 at the die entrance surface 1. 2. It is characterized in that a clearance L is provided on the die difference surface L and the die exit surface 2.
  • the incident angle is set to a two-stage incident angle of the former incident angle a and the succeeding incident angle ⁇ that is continuous with the former incident angle, and the slightly larger former incident angle ⁇ ; It is made smaller to prevent the ironing die from expanding in the radial direction and to secure the thickness of the side wall of the cup. It reduces the shear deformation of the metal layer and the underlying metal layer, making it less likely to damage the resin layer.
  • the first-stage incident angle ⁇ is 3 to 8 °
  • the second-stage incident angle) 3 is preferably 1 to 4 ° and 0 ° ⁇ _3 ⁇ 4 °.
  • ⁇ is less than 3 °
  • the die tends to expand and deform in the radial direction when 3 is at a small angle, so that the thickness of the side wall of the nip cannot be sufficiently reduced.
  • the braid exceeds 8 °, the shear deformation ir of the resin layer and the underlying metal layer increases even if is provided, and the resin layer is easily damaged. Then, to prevent a sudden change in the incident angle for 3 to 8 °, a) 3 of 1 to 4 ° is provided, and 0 ° ⁇ / 3 ⁇ 4 °. If the angle 3 is less than 1 °, the effect of the latter incident angle cannot be obtained, and if the angle is small, the thickness of the side wall of the cup cannot be reduced sufficiently.
  • the land 21 that continues is substantially parallel to the processing axis direction (the direction in which the punch advances perpendicular to the radial direction of the ring-shaped ironing die), that is, 0.5 to 1.5 in the processing axis direction.
  • the length of the land 21 is preferably 0.5 to 2 mm
  • the difference L between the radius of the boundary of the first stage incident angle and the second stage incident angle] 3 and the 0 radius of the land 21 is L It is preferably from 5 to 40 m.
  • the clearance angle a provided on the die exit surface 2 is not particularly limited, but is preferably 2 ° or more.
  • the material for the ironing die according to the present invention is not particularly limited, but it may be a carbide such as WC-Co, WC-TiC-Co, WC_Ta-Co, WC-TiC-Ta_Co, or the like. Alloys, ceramics mainly composed of alumina, zirconium, etc., cermets mainly composed of ic ⁇ iN, etc., high-speed steels and the like can be used. In addition, the surface of the ironing die made from these materials Alternatively, a material coated with a hard film such as diamond-like carbon or TN may be used.
  • an aluminum alloy plate, a steel plate, or a plate subjected to a chemical conversion treatment, plating and / or surface treatment is applied. Is done.
  • the resin layer to be coated on both or one side of the metal plate is made of a thermoplastic resin coated with an organic resin paint, or a thermoplastic resin heated and melted, extruded directly onto the metal plate, and laminated.
  • examples thereof include an unstretched film or a biaxially stretched film laminated on a metal plate.
  • the organic resin paint include a paint made of a resin such as a fluororesin, an epoxy resin, a vinyl resin, a urethane resin, a polyester resin, and an acryl resin.
  • the thermoplastic resin include polyolefin, polyester, polyamide, polycarbonate, polyvinyl chloride, and the like.
  • Sheet thickness 0.24 mm, temper: 2.5, using a well-known electrolytic chromic acid treatment method for cold-rolled steel sheets with a lower layer of 115 mgZm ⁇ SUP> 2 ⁇ / SUP> metal chrome layer and an upper layer of chromium 20 mg / m ⁇ SUP> 2 ⁇ / SUP> chromium hydrated oxide layer with a thickness of 25 / xm on one surface of tin-free steel (TFS) Then, the same polyester resin was extruded with a thickness of 15 / xm on the other side by extruding a polyester resin (melting point: 229 ° C) to form a resin-coated steel sheet.
  • TFS tin-free steel
  • a 140 mm disc-shaped blank was punched out of this resin-coated steel plate, and the surface on which the polyester resin was laminated to a thickness of 15 was placed on the outer surface of the cup, and a drawing ratio of 1.63 was drawn. And then re-drawn at a drawing ratio of 1.30, formed into a cup with a diameter of about 66 mm, and then processed using the ironing dies shown in Table 1 at a processing speed of 200 cans per minute. 3 steps of ironing (total ironing rate: 65%), diameter: about 66mm, container height : Formed into a cylindrical ironing container of about 130 mm.
  • the ironing dies of each stage were of the same shape and the same dimensions except that the radius of the land portion of the ring-shaped die was gradually reduced for each stage.
  • Eight can heights in the circumferential direction were measured for cans of ironing containers, and the average of the eight locations was evaluated according to the following criteria.
  • the can heights were measured at eight locations in the resin-coated steel sheet, corresponding to the rolling direction, the 90 ° direction relative to the rolling direction, and 45 ° relative to the rolling direction.
  • the die surface has a front incidence angle of 3 to 8 ° and a rear incidence angle of 1 to 4 °, and an angle obtained by subtracting the rear incidence angle from the front incidence angle exceeds 0 °.
  • an ironing die with an angle of incidence less than or equal to 4 ° By placing the cup formed from the coated metal plate on a punch and ironing, an ironing container made of a resin-coated metal plate having a sufficient height and having no damage to the resin layer can be obtained. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne une matrice d'étirage d'une feuille métallique enduite de résine, qui peut produire un récipient étiré ayant une hauteur suffisante, sans que la couche de résine puisse être endommagée facilement par une réduction suffisante de l'épaisseur d'une paroi latérale d'un récipient dans une étape d'étirage. L'invention concerne également un procédé mettant en oeuvre cette matrice d'étirage. La matrice d'étirage se caractérise en ce qu'elle comporte, sur une de ses surfaces, un angle d'incidence comprenant un angle de pré-incidence de 3 à 8° et un angle de post-incidence de 1 à 4°. Elle se caractérise aussi en ce qu'elle comporte un angle obtenu par soustraction de l'angle de post-incidence de l'angle de pré-incidence, de 0° et au plus 4°. Le procédé d'étirage se caractérise en ce qu'un récipient formé d'une feuille métallique enduite de résine est disposé sur un poinçon et soumis à un étirage au moyen de la matrice.
PCT/JP2000/003936 1999-06-16 2000-06-16 Matrice d'etirage pour feuille metallique enduite de resine et procede mettant en oeuvre cette matrice WO2000076684A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52493/00A AU5249300A (en) 1999-06-16 2000-06-16 Ironing die for resin coated metal sheet and ironing method using the ironing die

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/169491 1999-06-16
JP16949199 1999-06-16

Publications (1)

Publication Number Publication Date
WO2000076684A1 true WO2000076684A1 (fr) 2000-12-21

Family

ID=15887523

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/003936 WO2000076684A1 (fr) 1999-06-16 2000-06-16 Matrice d'etirage pour feuille metallique enduite de resine et procede mettant en oeuvre cette matrice

Country Status (2)

Country Link
AU (1) AU5249300A (fr)
WO (1) WO2000076684A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003019518A (ja) * 2001-07-04 2003-01-21 Toyo Kohan Co Ltd しごき加工方法、しごき加工用ダイスおよび絞りしごき缶
JP2006328539A (ja) * 2005-05-27 2006-12-07 Sandvik Intellectual Property Ab 超硬合金および工具
JP2018526228A (ja) * 2015-07-27 2018-09-13 コンステリウム ヌフ−ブリザックＣｏｎｓｔｅｌｌｉｕｍ Ｎｅｕｆ−Ｂｒｉｓａｃｈ アルミニウム容器の最適化された絞りおよび壁しごき加工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930396A (en) * 1974-09-30 1976-01-06 Reynolds Metals Company Die system for can body press
EP0402006A1 (fr) * 1989-06-08 1990-12-12 CarnaudMetalbox plc Procédé et dispositif pour le façonnage de corps creux par repassage de la paroi
JPH09285828A (ja) * 1996-04-22 1997-11-04 Nippon Steel Corp 樹脂被覆金属板のしごき加工方法およびその加工ダイス
US5742993A (en) * 1995-11-03 1998-04-28 Kaiser Aluminum & Chemical Corporation Method for making hollow workpieces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930396A (en) * 1974-09-30 1976-01-06 Reynolds Metals Company Die system for can body press
EP0402006A1 (fr) * 1989-06-08 1990-12-12 CarnaudMetalbox plc Procédé et dispositif pour le façonnage de corps creux par repassage de la paroi
US5742993A (en) * 1995-11-03 1998-04-28 Kaiser Aluminum & Chemical Corporation Method for making hollow workpieces
JPH09285828A (ja) * 1996-04-22 1997-11-04 Nippon Steel Corp 樹脂被覆金属板のしごき加工方法およびその加工ダイス

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003019518A (ja) * 2001-07-04 2003-01-21 Toyo Kohan Co Ltd しごき加工方法、しごき加工用ダイスおよび絞りしごき缶
JP2006328539A (ja) * 2005-05-27 2006-12-07 Sandvik Intellectual Property Ab 超硬合金および工具
JP2018526228A (ja) * 2015-07-27 2018-09-13 コンステリウム ヌフ−ブリザックＣｏｎｓｔｅｌｌｉｕｍ Ｎｅｕｆ−Ｂｒｉｓａｃｈ アルミニウム容器の最適化された絞りおよび壁しごき加工方法

Also Published As

Publication number Publication date
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