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公开(公告)号：US5111679A
公开(公告)日：1992-05-12
申请号：US544725
申请日：1990-06-27
摘要： In a method for forming a barrel for a two-piece can, before the step of draw-forming the bottom, a taper portion having an inner diameter gradually decreasing toward the bottom surface is formed on a lower part of the side wall of a flat-bottom barrel, corresponding to the outer circumferential frustoconical portion of the bottom of the final barrel or an upper portion contiguous to the outer circumferential portion, and at the step of draw-forming the bottom, at least an upper part of the taper portion is outwardly expanded by insertion of the cylindrical punch. According to this method, a two-piece can having a bottom having a good appearance, a high pressure-resistant strength and an excellent corrosion resistance can be prepared at a high productivity and with a good operation adaptability.
摘要翻译： 在形成两件式罐的桶的方法中，在拉伸成形底部的步骤之前，在平坦的侧壁的下部形成有朝向底面逐渐减小的内径的锥形部 对应于最终筒的底部的外周截头圆锥部分或与外周部分相邻的上部，并且在拉伸成形底部的步骤中，锥形部分的至少上部是 通过插入圆柱形冲头而向外膨胀。 根据该方法，可以以高生产率和良好的操作适应性制备具有外观良好，耐压强度高，耐腐蚀性优异的底部的两件式罐。
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公开(公告)号：USD372868S
公开(公告)日：1996-08-20
申请号：US36999
申请日：1995-03-31
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公开(公告)号：US5803301A
公开(公告)日：1998-09-08
申请号：US813431
申请日：1997-03-10
CPC分类号： B32B15/08 , B21D51/26 , B65D1/28 , Y10S220/906
摘要： A shock resistant seamless can comprising a side wall having an inside surface and an outside surface formed from a laminate of a metal substrate and a thermoplastic resin layer provided on the inside surface of the can side wall, wherein the inner surface of the side wall resin layer opposite the metal substrate comprises a plurality of dotted projections.
摘要翻译： 一种抗冲击无缝罐，其包括具有内侧表面的侧壁和由设置在罐侧壁的内表面上的金属基板和热塑性树脂层的层压体形成的外表面，其中侧壁树脂的内表面 与金属基板相对的层包括多个点状突起。
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公开(公告)号：US5144824A
公开(公告)日：1992-09-08
申请号：US599772
申请日：1990-10-18
CPC分类号： B21D22/201 , B21D51/26 , B29C51/14 , Y10T428/1355
摘要： In the production of a thickness-reduced draw-formed can by draw-redraw forming and bending elongation, by using a laminated metal plate comprising a metal plate and a coating layer of a thermoplastic resin having a tension of from 1.times.10.sup.7 to 8.times.10.sup.8 dyne/cm.sup.2 under an elongation of 200% at a temperature of the glass transition point plus 20.degree. C., carrying out redraw forming at a temperature at which the dynamic friction coefficient of the thermoplastic resin is smaller than 0.5 and which is higher than the glass transition point and carrying out bending elongation of the side wall of the can simultaneously with redraw forming, high reduction of the thickness of bending elongation and improvement of the corrosion resistance of the resin-coated vessel can be simultaneously attained.
摘要翻译： 在通过拉伸拉深成形和弯曲伸长率制造厚度缩小的拉伸成型罐时，通过使用包括金属板和热塑性树脂的涂层的层压金属板，其具有1×10 7至8×10 8达因/ cm 2的张力 在玻璃化转变点加上20℃的温度下，在200％的伸长率下，在热塑性树脂的动摩擦系数小于0.5且高于玻璃化转变点的温度下进行再拉伸成形 同时进行再拉拔成型同时实现罐体侧壁的弯曲伸长，可以同时实现树脂涂布容器的弯曲伸长率的高度降低和耐腐蚀性的提高。
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公开(公告)号：US5778722A
公开(公告)日：1998-07-14
申请号：US871769
申请日：1997-06-09
摘要： A method of producing seamless cans wherein a blank holder 2 is inserted in a metal cup 5 coated with an organic film 12, a punch 1 is advanced into a cavity 7 in a die 3 while pushing the bottom 5a of the metal cup onto the flat surface portion 3a of the die by the blank holder 2, so that the side wall 5b of the metal cup 5 is brought into intimate contact with the flat surface portion 3a of the die and with the working corner 3b having a small radius of curvature, thereby to reduce the thickness of the side wall 5b by bend-elongation. Moreover, the portion to be subjected to the necking is ironed at an ironing ratio of not smaller than 5% by the punch 1 in cooperation with the front end 3b.sub.1, of the working corner 3b, or by the front end 3b.sub.1, and an ironing portion of a short cylindrical portion in front thereof, or by the punch 1 in cooperation with the ironing portion 3g of the die 3 by advancing the side wall 5b slightly toward the inside in the cavity 7, thereby to obtain a seamless can 20 having a reduced thickness in the side wall 5b. This method makes it possible to control the thickness distribution in the side wall and, hence, to produce seamless cans having reduced thickness in the side wall permitting the organic film to be least whitened during the necking working.
摘要翻译： 一种生产无缝罐的方法，其中将坯料夹持器2插入涂覆有机膜12的金属杯5中，冲压机1推进到模具3中的空腔7中，同时将金属杯的底部5a推到平面 金属杯5的侧壁5b与模具的平面部3a紧密接触，并且具有小的曲率半径的工作角部3b， 从而通过弯曲伸长来减小侧壁5b的厚度。 此外，通过与作业拐角3b的前端3b1或前端3b1配合的冲头1以熨烫比为5％以上的部分进行颈缩的部分熨烫，以及熨烫 通过使侧壁5b稍微朝向空腔7内的内侧前进，与冲头3的熨烫部3g配合，通过冲头1与冲头1配合，从而得到具有 减小侧壁5b的厚度。 这种方法使得可以控制侧壁的厚度分布，并且因此在侧壁中产生具有减小的厚度的无缝罐，从而允许有机膜在颈缩加工期间最少白化。
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公开(公告)号：US5105645A
公开(公告)日：1992-04-21
申请号：US611636
申请日：1990-11-13
摘要： Disclosed is a method of redrawing a metal cup, in which an annular working member is used together with a redrawing die, a redrawing punch and a cup-shaped holding member, and this annular working member has a working face having an inner diameter smaller than the outer diameter of a preliminarily drawn cup to be redrawn. If redrawing is carried out by using this annular working member, the thickness of the drawn cup can be uniformly and sufficiently reduced without damaging a metal sheet of the preliminarily drawn cup or a coating layer thereof.
摘要翻译： 公开了一种重画金属杯的方法，其中环形工作构件与重画模具，重画冲头和杯形保持构件一起使用，并且该环形工作构件具有内径小于 预拉伸的杯子的外径被重新拉伸。 如果通过使用这种环形工作构件进行重画，则可以均匀且充分地减小拉拔杯的厚度，而不会损坏预先拉拔的杯的金属片或其涂层。
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公开(公告)号：US4984708A
公开(公告)日：1991-01-15
申请号：US527469
申请日：1990-05-23
CPC分类号： B21D22/201 , B21D22/28
摘要： The present invention provides a redrawing method which comprises holding a preliminarily drawn cup of a covered metal sheet by an annular holding member inserted in the cup and a redrawing die, and relatively moving the redrawing die and a redrawing punch arranged coaxially with the holding member and redrawing cup, said drawing punch being capable of going into the holding member and coming out from the holding member, so that the redrawing die and redrawing punch are engaged with each other, to form a deep-drawn cup having a diameter smaller than that of the preliminarily drawn cup. This redrawing method is prominently characterized in that the radius of curvature of the operating corner portion of the redrawing die is 1 to 2.9 times as large as the bare sheet thickness of the metal sheet. According to this redrawing method, the thickness is effectively reduced by bending and elongating of the side wall, and the variation of the thickness between the upper and lower portions of the side wall is eliminated and the thickness is uniformly reduced as a whole.
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公开(公告)号：US5360649A
公开(公告)日：1994-11-01
申请号：US974521
申请日：1992-11-12
申请人： Nobuyuki Sato , Ikuo Komatsu , Katsuhiro Imazu , Tomomi Kobayashi
发明人： Nobuyuki Sato , Ikuo Komatsu , Katsuhiro Imazu , Tomomi Kobayashi
CPC分类号： B21D35/006 , B21D51/26 , B65D1/165 , Y10T428/12431 , Y10T428/1321 , Y10T428/1355
摘要： A thickness-reduced deep-draw-formed can obtained by using, as the substrate, a cold-rolled steel plate having a carbon content in the steel of 0.02 to 0.15% by weight, a manganese content in the steel of 0.2 to 1.0% by weight, a mean diameter of crystal grain of smaller than 6.0 .mu.m, a tensile strength over a range of from 35 to 55 kg/mm.sup.2, and a thickness of 0.17 to 0.30 mm in a step of subjecting an organic resin-coated structure of the surface-treated steel plate to the thickness-reducing deep-draw forming. This makes it possible to suppress the generation and accumulation of heat in the organic resin-coated steel plate to a level lower than the conventional levels. Therefore, the organic resin coating is prevented from being peeled off or damaged and, as a result, the corrosion resistance can be markedly improved. Moreover, wrinkles can be effectively prevented from developing at the time of reducing the thickness, and the forming can be continuously carried out at a high speed without being substantially affected by the generation or accumulation of heat. It is further possible to easily carry out the post treatments such as necking, flanging and multi-beading after the forming. The thickness-reduced deep-draw-formed can of the invention is effective particularly for preserving various kinds of juices, coffee, oolong tea and any other beverages after it is hermetically sealed, retort-sterilized and reduced for its internal pressure.
摘要翻译： 使用钢中碳含量为0.02〜0.15重量％，钢中的锰含量为0.2〜1.0％的冷轧钢板作为基材，可以得到厚度减薄的深拉成形物， ，在有机树脂被覆结构体的工序中，平均粒径小于6.0μm，拉伸强度为35〜55kg / mm 2，厚度为0.17〜0.30mm 的表面处理钢板进行厚度减薄深拉成形。 这使得可以将有机树脂涂覆钢板中的热的产生和积聚抑制到低于常规水平的水平。 因此，防止有机树脂涂层被剥离或损坏，结果可以显着提高耐腐蚀性。 此外，在减小厚度的同时可以有效地防止褶皱的发展，并且可以高速连续地进行成形，而不会受到热的产生或积累的显着影响。 还可以容易地进行后处理，例如成型后的颈缩，翻边和多重着色。 本发明的厚度减薄的深拉制罐尤其适用于在气密密封，蒸煮灭菌和内压降低后保存各种果汁，咖啡，乌龙茶和任何其他饮料。
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公开(公告)号：US5083449A
公开(公告)日：1992-01-28
申请号：US611604
申请日：1990-11-13
申请人： Tomomi Kobayashi , Katsuhiro Imazu
发明人： Tomomi Kobayashi , Katsuhiro Imazu
摘要： Disclosed is a redrawing method in which a preliminarily drawn cup having a flange is engaged with a flange-correcting die arranged coaxially with a blank holder to surround the blank holder with a small distance from the peripheral face of the blank holder before the residual flange of the preliminarily drawn cup is introduced into a clearance between the blank holder and a redrawing die, and the preliminarily drawn cup is redrawn in this state. The flange-correcting die has a working face, the inner diameter of which is gradually decreased, and the distance of from the peripheral face of the cup on the tangential line of the working face to the point of the contact with the working face is substantially constant at least in the introduction side portion of the working face. According to this redrawing method, a draw-redraw-formed can having an excellent shape or dimensional precision can be obtained without occurrence of troubles such as edge breaking of the material, breaking of the coating and formation of an enamel hair.
摘要翻译： 公开了一种重画方法，其中具有凸缘的预先拉拔的杯与与坯料保持器同轴设置的凸缘校正模具接合，以围绕坯料保持器，在坯料保持器的残余凸缘之前距离坯料保持器的周面小的距离 将预先拉出的杯子引入到坯料保持器和重新拉伸模具之间的间隙中，并且在该状态下重新绘制预拉伸的杯子。 凸缘修正模具具有工作面，其内径逐渐减小，并且从工作面的切线到与工作面接触点的杯的外周面的距离基本上 至少在工作面的导入侧部分中是恒定的。 根据这种重画法，可以获得具有优异形状或尺寸精度的拉伸重绘的罐，而不会发生材料的边缘断裂，打破涂层和形成搪瓷毛发等麻烦。
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公开(公告)号：US5139889A
公开(公告)日：1992-08-18
申请号：US676488
申请日：1991-03-28
CPC分类号： B21D22/201 , B65D1/165 , Y10S220/917 , Y10T428/12549 , Y10T428/12569
摘要： Disclosed is a thickness-reduced deep-draw-formed can, which is prepared by subjecting a resin-coated structure of a surface-treated steel plate comprising, as the substrate, a cold-rolled steel plate having a carbon content in the steel of 0.04 to 0.15% by weight and a manganese content in the steel of 0.3 to 1.0% by weight, an average crystal grain size not larger than 6.0 .mu.m and a tensile strength of at least 65 kg/mm.sup.2, to reduction of the thickness and deep-draw-forming.This can has a high pressure-resistant vessel strength, a high uniformity of the can plate thickness, a high adhesion of the coating and a high corrosion resistance in combination.
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