WO2018161517A1 - 耐压基本盖、易拉盖以及带易拉盖的易拉罐 - Google Patents

耐压基本盖、易拉盖以及带易拉盖的易拉罐 Download PDF

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WO2018161517A1
WO2018161517A1 PCT/CN2017/101598 CN2017101598W WO2018161517A1 WO 2018161517 A1 WO2018161517 A1 WO 2018161517A1 CN 2017101598 W CN2017101598 W CN 2017101598W WO 2018161517 A1 WO2018161517 A1 WO 2018161517A1
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Prior art keywords
arc segment
circular arc
segment
section
cover
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PCT/CN2017/101598
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English (en)
French (fr)
Inventor
张玮玮
李会免
熊康
王炳生
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苏州斯莱克精密设备股份有限公司
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Publication of WO2018161517A1 publication Critical patent/WO2018161517A1/zh

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    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/443—Making closures, e.g. caps easily removable closures, e.g. by means of tear strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials

Definitions

  • the present invention relates to a basic cover, an easy-open cover, and a can, and particularly to a pressure-resistant basic cover capable of saving materials, an easy-open cover, and a can with an easy-open cover.
  • the easy-opening structure disclosed in the patent is composed of a cover body and two parts of a pull ring riveted to the cover body; the cross-section of the cover body is a sealing area from the periphery of the cover body to the center, and a downwardly extending countersunk head. a segment, a turning arc segment of the turn, an upwardly extending segment of the upward ring, and a horizontal center cover surface, and an annular groove is formed between the countersunk section and the upwardly extending section of the collar; the countersunk section is sequentially inclined by the upper head The segment, the intermediate transition arc and the vertical submerged head segment are connected.
  • the above patented scheme reduces the size of the blank, but its pressure resistance is still insufficient.
  • the object of the present invention is to provide a pressure-resistant basic cover, an easy-opening cover and a can with an easy-opening cover, so as to simplify the structure and reduce the production difficulty under the premise of saving materials and ensuring pressure resistance.
  • the basic cover technical solution adopted by the present invention is: a pressure resistant basic cover, the cross section of the basic cover is a sealing area, a countersunk section, an inset circular arc section, and an inlay from the periphery to the center. An upwardly extending section and a central cover surface, and an annular groove is formed between the countersunk section and the upwardly extending section of the collar;
  • the countersunk section is composed of a first straight line segment, a fourth circular arc segment and a fifth circular arc segment, and the first end of the first straight segment is connected with the corresponding end of the sealing region, and the second end and the fourth circle are The first end of the arc is connected, and the first straight segment and the fourth circular segment Tangent; the second end of the fourth circular arc segment is connected to the first end of the fifth circular arc segment, and the fourth circular arc segment is circumscribed to the fifth circular arc segment; The two ends are connected to the first end of the circular arc segment, and the fifth circular arc segment is circumscribed with the circular arc segment; the upwardly extending segment of the annular ring is composed of the second straight segment and the seventh arc segment.
  • the first end of the second straight line segment is connected to the second end of the circular arc segment, and the second straight line segment is tangent to the circular arc segment; the second end and the seventh arc of the second straight line segment The first end of the segment is connected, and the second straight segment is tangent to the seventh arc segment; the second end of the seventh arc segment is connected to the central cover surface, and the seventh arc segment is tangent to the central cover surface;
  • the radius of the fifth circular arc segment is greater than or equal to 2.5 mm and less than or equal to 5 mm;
  • the radius of the circular arc segment is greater than or equal to 0.25 mm and less than or equal to 0.6 mm;
  • the radius of the fourth circular arc segment is greater than or equal to 0.1 mm and less than or equal to 3 mm;
  • the connecting point of the fifth circular arc segment and the circular arc segment is the auxiliary point Q1, and the straight line passing through the auxiliary point Q1 perpendicular to the central cover surface is the auxiliary line A; the fifth circular arc segment and the circular arc The segment is located on both sides of the auxiliary line A with the auxiliary line A as a boundary line; the projection distance of the center of the fifth circular arc segment and the center of the circular arc segment on the auxiliary line is less than or equal to the radius of the circular arc segment Numerical value
  • a center of the circular arc segment to a projection distance of the outer edge of the base cover in a direction perpendicular to the auxiliary line A is greater than or equal to 0.9 times the depth of the countersunk, and less than or equal to a depth of 1.15 times; the depth of the countersink is Refers to the maximum distance projected by the sealed can area and the circular arc segment on the auxiliary line A;
  • the angle of the countersunk angle ⁇ of the countersunk section is greater than or equal to 0° and less than or equal to 30°; the countersunk angle ⁇ of the countersunk section is an angle between the first straight line segment and a vertical line perpendicular to the central cover surface;
  • the angle of the extension angle ⁇ of the upwardly extending section of the collar is greater than or equal to 0° and less than or equal to 40°; the extension angle ⁇ of the upwardly extending section of the collar is the second straight section and perpendicular to the central cover surface (L3) The angle of the vertical line.
  • the sealing area is formed by tangential connection of the first circular arc segment, the second circular arc segment and the third circular arc segment.
  • the easy-opening technical solution adopted by the present invention is: a pressure-resistant easy-opening cover comprising a basic cover and a pull ring, and the basic cover structure is a basic cover solution as described above.
  • a pressure-resistant can comprising a can body and a pull-tab
  • the easy-open cover comprising a basic cover and a pull ring
  • the basic cover structure being basically as described above Cover scheme.
  • the design principle of the present invention is: the utility model is to design the countersunk section to be composed only of the first straight line segment L1, the fourth arc segment R4, and the fifth arc segment R5, and the upwardly extending segment of the ring is composed of the second straight line
  • the segment L2 and the seventh arc segment R7 are composed, which seems to be a simple simplification of the prior art CN100435997C, but actually breaks through the limitations of the design thinking in the field.
  • the countersunk section of the prior art CN100435997C consists of six or seven straight lines or arcs, which is difficult to form, especially the small arc inflection points are particularly difficult to form, and the production difficulty is obviously high. It is difficult to ensure the size during actual production.
  • the precision of the buried section of the structure of the embodiment is composed only of the first straight segment L1, the fourth arc segment R4, and the fifth arc segment R5, and the transition is smooth, and the molding aspect is obviously more, which significantly reduces the production difficulty and cost. ;
  • Figure 1 is a partial cross-sectional view showing an embodiment of the present invention
  • FIG. 3 is a finite element analysis chart comparing the pressure resistance effect of the cover type of the embodiment 202 of the present invention with the prior art CN100435997C.
  • Embodiment 1 Referring to Figure 1, a pressure resistant basic cover:
  • the cross-section of the pressure-resistant basic cover is, in order from the periphery to the center, a sealing area, a countersunk section, a circular arc section, an upwardly extending section of the ring, and a central cover surface, and the buried section and the upward extending section of the collar An annular groove is formed therebetween.
  • the can sealing area is formed by tangentially connecting the first circular arc segment R1, the second circular arc segment R2 and the third circular arc segment R3.
  • the countersunk head segment is composed of a first straight line segment L1, a fourth arc segment R4, and a fifth arc segment R5.
  • the first end of the first straight segment L1 is connected with the corresponding end of the can sealing region, and the second end thereof is
  • the first end of the fourth arc segment R4 is connected, and the first straight segment L1 is tangent to the fourth arc segment R4;
  • the second end of the fourth arc segment R4 is the first of the fifth arc segment R5
  • the end is connected, and the fourth arc segment R4 and the fifth arc segment (R5) are circumscribed;
  • the second end of the fifth arc segment R5 is connected to the first end of the ring segment R6, and the fifth The arc segment R5 and the ring segment R6 are circumscribed.
  • the upwardly extending section of the collar is composed of a second straight line segment L2 and a seventh circular arc segment R7, and the first end of the second straight line segment L2 is connected with the second end of the circular arc segment R6, and the second straight line
  • the segment L2 is tangent to the circular arc segment R6; the second end of the second straight segment L2 is connected to the first end of the seventh arc segment R7, and the second straight segment L2 is opposite to the seventh arc segment R7 Cutting; the second end of the seventh arc segment R7 is connected to the central cover surface L3, and the seventh arc segment R7 and the center cover surface L3 is tangent.
  • the center cover surface L3 may be a flat surface or a substantially flat surface including a partial curved surface.
  • the radius of the fifth arc segment R5 is greater than or equal to 2.5 mm and less than or equal to 5 mm.
  • the radius of the circular arc segment R6 is greater than or equal to 0.25 mm and less than or equal to 0.6 mm.
  • the radius of the fourth circular arc segment R4 is greater than or equal to 0.1 mm and less than or equal to 3 mm.
  • connection point of the fifth circular arc segment R5 and the circular arc segment R6 is the auxiliary point Q1, and the straight line passing through the auxiliary point Q1 perpendicular to the central cover surface L3 is the auxiliary line A; the fifth circular arc segment R5 and The circular arc segment R6 is located on both sides of the auxiliary line A with the auxiliary line A as a boundary line.
  • the projection distance H1 of the center Y5 of the fifth circular arc segment R5 and the center Y6 of the circular arc segment R6 on the auxiliary line A is less than or equal to the value of the radius of the circular arc segment R6, preferably the projection distance H1 is zero.
  • the center distance Y6 of the circular arc segment R6 to the outer edge of the basic cover is perpendicular to the direction of the auxiliary line A by a projection depth W1 greater than or equal to 0.9 times the tap depth T1 and less than or equal to 1.15 times the countersunk depth T1.
  • the countersunk depth T1 refers to the maximum projection distance of the sealing can area and the inlaid circular arc segment R6 (the inscribed arc segment R6 arc insole) on the auxiliary line A.
  • the angle of the countersunk angle ⁇ of the countersunk section is greater than or equal to 0° and less than or equal to 30°; the countersunk angle ⁇ of the countersunk section is an angle between the first straight line segment L1 and a vertical line perpendicular to the center cover surface L3 .
  • the angle of the extension angle ⁇ of the upwardly extending section of the collar is greater than or equal to 0° and less than or equal to 40°; the extension angle ⁇ of the upwardly extending section of the collar is the second straight section L2 and perpendicular to the central cover surface L3 The angle of the vertical line.
  • the buried section of the prior art CN100435997C consists of six or seven straight lines or arcs, which is difficult to form, especially the small arc inflection point is particularly difficult to form, and the production difficulty is obviously high, and it is difficult to ensure the size during actual production.
  • the precision of the buried section of the structure of the embodiment is composed only of the first straight section L1, the fourth arc section R4 and the fifth arc section R5, and the transition is smooth, and the molding aspect is obviously more convenient, which significantly reduces the production difficulty and cost;
  • the basic cover of the embodiment and the basic cover of the prior art CN100435997C are set, and the material properties, material thickness, model loading mode, finite element calculation method, mesh size, unit type and the like are all the same, and the only difference is the basic The structure of the cover.
  • the pressure resistance value of the basic cover (labeled SLAC) of this embodiment is 679.823 KPa, and the pressure resistance of the basic cover (labeled CDL) of the prior art CN100435997C. The value is 674.624 KPa.
  • the pressure resistance value of the basic cover (labeled as SLAC) of this embodiment is 649.35 KPa, and the pressure resistance of the basic cover (labeled CDL) of the prior art CN100435997C. The value is 639.175KPa.
  • the left vertical axis of FIGS. 2 and 3 represents the withstand voltage value
  • the right vertical axis represents the volume of the basic cover
  • the horizontal The axis is a parameter of the finite element calculation, so the peak value of the specific curve represents the withstand voltage value, and the shape and peak of the curve appear no later or later.
  • the second embodiment is a pressure-resistant and easy-to-open cover, which includes a basic cover and a pull ring.
  • the structure of the basic cover is the same as that in the first embodiment, and details are not described herein.
  • Embodiment 3 A pressure-resistant can, comprising a can body and an easy-opening cover, the easy-opening cover comprises a basic cover and a pull ring, and the structure of the basic cover is the same as that of the first embodiment, and details are not described herein.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

一种耐压基本盖、易拉盖以及带易拉盖的易拉罐，基本盖的横截面上从周边至中心依次为封罐区域、埋头段、嵌环圆弧段、嵌环向上延伸段以及中心盖面，埋头段由第一直线段(L1)、第四圆弧段(R4)、第五圆弧段(R5)组成，嵌环向上延伸段由第二直线段(L2)和第七圆弧段(R7)组成；第五圆弧段(R5)和嵌环圆弧段(R6)以辅助线A为分界线位于两侧；第五圆弧段(R5)的圆心(Y5)与嵌环圆弧段(R6)的圆心(Y6)在辅助线A上的投影距离(H1)小于或等于嵌环圆弧段(R6)半径的数值。上述基本盖易成型，降低了生产难度和成本，并且耐压性能与现有技术相等甚至还略高。

Description

耐压基本盖、易拉盖以及带易拉盖的易拉罐 技术领域
本发明涉及基本盖、易拉盖以及易拉罐，特别涉及一种能够节省材料的耐压型的基本盖、易拉盖以及带易拉盖的易拉罐。
背景技术
易拉盖问世于上个世纪60年代，广泛应用于饮料罐、啤酒罐的配套包装。由于重量轻、体积小、废料可重复使用的诸多优点，易拉盖在全世界范围内得到大力推广，并形成庞大的生产规模。随着易拉盖市场需求的不断增长，易拉盖产业也迅速发展，竞争也越来越激烈，因此为了节约资源，降低成本适应市场竞争的需要，研究开发一种节省材料的耐压易拉盖不仅是企业生存和发展的需要，而且也是市场经济发展的必然。
现有技术中，具代表性的结构之一可参见的CN201530522U中国发明。该专利公开的易拉盖结构为：由盖体和铆接于盖体上的拉环两部分构成；所述盖体横截面上从盖体周边至中心依次为封罐区域、向下延伸的埋头段、转向的嵌环圆弧段、向上的嵌环向上延伸段以及水平的中心盖面，埋头段和嵌环向上延伸段之间形成环形凹槽；所述埋头段依次由斜向的上埋头段、中间过渡圆弧和竖向的下埋头段连接构成。上述专利方案是减少了下料尺寸，但是其耐压性能仍不足。
现有技术中，具代表性的结构之二可参见CN100435997C的中国发明专利。该专利公开的盖体结构公开：埋头段依次由内壁部分、连接处、上壁部分、壁部分、上壁部分、外壁部分连接组成。上述专利方案在省材料的前提下耐压性能也不错，但是，由于其埋头段由多段构成，成型较困难，特别是其中的壁部分这里形成的拐点，特别难成型，对模具的要求过高，实际生产很难达到理论设计尺寸。
故而，如何在省材料和保证耐压性能的前提下，简化结构降低生产难度，就成为了一重要课题。
发明内容
本发明目的是提供一种耐压基本盖、易拉盖以及带易拉盖的易拉罐，以在省材料和保证耐压性能的前提下，简化结构降低生产难度。
为达到上述目的，本发明采用的基本盖技术方案是：一种耐压基本盖，该基本盖的横截面上从周边至中心依次为封罐区域、埋头段、嵌环圆弧段、嵌环向上延伸段以及中心盖面，所述埋头段和嵌环向上延伸段之间形成环形凹槽；
所述埋头段由第一直线段、第四圆弧段、第五圆弧段组成，所述第一直线段的第一端与封罐区域的对应端连接，其第二端与第四圆弧段的第一端连接，且第一直线段与第四圆弧段 相切；所述第四圆弧段的第二端与第五圆弧段的第一端连接，且第四圆弧段与第五圆弧段外切；所述第五圆弧段的第二端与嵌环圆弧段的第一端连接，且第五圆弧段与嵌环圆弧段外切；所述嵌环向上延伸段由第二直线段和第七圆弧段组成，所述第二直线段的第一端与嵌环圆弧段的第二端连接，且第二直线段与嵌环圆弧段相切；所述第二直线段的第二端与第七圆弧段的第一端连接，且第二直线段与第七圆弧段相切；所述第七圆弧段的第二端与中心盖面连接，且第七圆弧段与中心盖面相切；
所述第五圆弧段的半径大于或等于2.5mm，且小于或等于5mm；
所述嵌环圆弧段的半径大于或等于0.25mm，且小于或等于0.6mm；
所述第四圆弧段的半径大于或等于0.1mm，且小于或等于3mm；
所述第五圆弧段与嵌环圆弧段的连接点为辅助点Q1，通过辅助点Q1的垂直于中心盖面的直线为辅助线A；所述第五圆弧段和嵌环圆弧段以辅助线A为分界线位于辅助线A的两侧；所述第五圆弧段的圆心与嵌环圆弧段的圆心在辅助线上的投影距离小于或等于嵌环圆弧段半径的数值；
所述嵌环圆弧段的圆心至所述基本盖外缘在垂直于辅助线A方向的投影距离大于或等于0.9倍的埋头深度，且小于或等于1.15倍的埋头深度；所述埋头深度是指封罐区域与嵌环圆弧段在辅助线A上的投影最大距离；
所述埋头段的埋头角β的角度大于或等于0°，且小于或等于30°；所述埋头段的埋头角β为第一直线段与垂直于中心盖面的垂直线的夹角；
所述嵌环向上延伸段的延伸角α的角度大于或等于0°，且小于或等于40°；所述嵌环向上延伸段的延伸角α为第二直线段与垂直于中心盖面(L3)的垂直线的夹角。
上述方案中，所述封罐区域由第一圆弧段、第二圆弧段以及第三圆弧段依次相切连接而成。
为达到上述目的，本发明采用的易拉盖技术方案是：一种耐压易拉盖，包括基本盖及拉环，所述基本盖结构如上所述的基本盖方案。
为达到上述目的，本发明采用的易拉罐技术方案是：一种耐压易拉罐，包括罐体及易拉盖，所述易拉盖包括基本盖及拉环，所述基本盖结构如上所述的基本盖方案。
本发明的设计原理是：本实用新是将埋头段设计为仅由第一直线段L1、第四圆弧段R4、第五圆弧段R5组成，所述嵌环向上延伸段由第二直线段L2和第七圆弧段R7组成，看似好像是现有技术CN100435997C的简单简化，但实际上是却是突破了本领域一直以来的设计思维局限，以往易拉盖设计领域技术人员一直认为要在埋头段加设更多地拐点才能提高耐压性能，而本发明却正式打破了这一思维局限，并且依靠第五圆弧段R5、嵌环圆弧段R6、第四圆弧段R4的尺寸选择，以及W1大于或等于0.9倍的T1，且小于或等于1.15 倍的T1、以及限定埋头段的埋头角β和嵌环向上延伸段的延伸角α的角度等技术特征最终意想不到地达到了与现有技术CN100435997C相等甚至略高的耐压性能，以如此简化的结构达到如此高的耐压性性能这在本领域是一重要突破。
本发明与现有技术相比的优点如下：
1、结构上，现有技术CN100435997C的埋头段由六、七段直线或圆弧组成，成型困难，特别是其中的小圆弧拐点特别难成型，制作难度明显很高，实际制作时难于保证尺寸的精度；而本实施例结构的埋头段仅由第一直线段L1、第四圆弧段R4、第五圆弧段R5组成，过渡平滑，成型方面明显地多，显著降低了生产难度和成本；
2、耐压性能，以有限元的分析结果证明：本实施例基本盖(标记为SLAC)的耐压性能相较于现有技术CN100435997C的基本盖(标记为CDL)相等甚至还略高。
附图说明
图1为本发明实施例横截面局部示意图；
图2为本发明实施例200盖型与现有技术CN100435997C公开方案的耐压效果对比的有限元分析图表；
图3为本发明实施例202盖型与现有技术CN100435997C公开方案的耐压效果对比的有限元分析图表。
具体实施方式
下面结合附图及实施例对本发明作进一步描述：
实施例一：参见附图1所示，一种耐压基本盖：
所述耐压基本盖的横截面上从周边至中心依次为封罐区域、埋头段、嵌环圆弧段、嵌环向上延伸段以及中心盖面，所述埋头段和嵌环向上延伸段之间形成环形凹槽。
所述封罐区域由第一圆弧段R1、第二圆弧段R2以及第三圆弧段R3依次相切连接而成。
述埋头段由第一直线段L1、第四圆弧段R4、第五圆弧段R5组成，所述第一直线段L1的第一端与封罐区域的对应端连接，其第二端与第四圆弧段R4的第一端连接，且第一直线段L1与第四圆弧段R4相切；所述第四圆弧段R4的第二端与第五圆弧段R5的第一端连接，且第四圆弧段R4与第五圆弧段(R5)外切；所述第五圆弧段R5的第二端与嵌环圆弧段R6的第一端连接，且第五圆弧段R5与嵌环圆弧段R6外切。
所述嵌环向上延伸段由第二直线段L2和第七圆弧段R7组成，所述第二直线段L2的第一端与嵌环圆弧段R6的第二端连接，且第二直线段L2与嵌环圆弧段R6相切；所述第二直线段L2的第二端与第七圆弧段R7的第一端连接，且第二直线段L2与第七圆弧段R7相切；所述第七圆弧段R7的第二端与中心盖面L3连接，且第七圆弧段R7与中心盖面 L3相切。中心盖面L3可以是一平面也可以是包括局部弯曲面的大致的平面。
所述第五圆弧段R5的半径大于或等于2.5mm，且小于或等于5mm。
所述嵌环圆弧段R6的半径大于或等于0.25mm，且小于或等于0.6mm。
所述第四圆弧段R4的半径大于或等于0.1mm，且小于或等于3mm。
所述第五圆弧段R5与嵌环圆弧段R6的连接点为辅助点Q1，通过辅助点Q1的垂直于中心盖面L3的直线为辅助线A；所述第五圆弧段R5和嵌环圆弧段R6以辅助线A为分界线位于辅助线A的两侧。
所述第五圆弧段R5的圆心Y5与嵌环圆弧段R6的圆心Y6在辅助线A上的投影距离H1小于或等于嵌环圆弧段R6半径的数值，较佳是投影距离H1为零。
所述嵌环圆弧段R6的圆心Y6至所述基本盖外缘在垂直于辅助线A方向的投影距离W1大于或等于0.9倍的埋头深度T1，且小于或等于1.15倍的埋头深度T1。所述埋头深度T1是指封罐区域与嵌环圆弧段R6(嵌环圆弧段R6弧内底)在辅助线A上的投影最大距离。
所述埋头段的埋头角β的角度大于或等于0°，且小于或等于30°；所述埋头段的埋头角β为第一直线段L1与垂直于中心盖面L3的垂直线的夹角。
所述嵌环向上延伸段的延伸角α的角度大于或等于0°，且小于或等于40°；所述嵌环向上延伸段的延伸角α为第二直线段L2与垂直于中心盖面L3的垂直线的夹角。
本实施例结构与现有技术CN100435997C进行效果对比：
一、结构方面，现有技术CN100435997C的埋头段由六、七段直线或圆弧组成，成型困难，特别是其中的小圆弧拐点特别难成型，制作难度明显很高，实际制作时难于保证尺寸的精度；而本实施例结构的埋头段仅由第一直线段L1、第四圆弧段R4、第五圆弧段R5组成，过渡平滑，成型方面明显方便地多，显著降低了生产难度和成本；
二、耐压性能，下面以有限元分析来证明：
设定本实施例基本盖和现有技术CN100435997C基本盖，所涉及的材料属性，材料厚度，模型的加载方式、有限元计算方法、网格尺寸、单元类型等条件均相同，唯一不同的就是基本盖的结构。
以200盖来例，有限元分析图表如图2所示，本实施例基本盖(标记为SLAC)的耐压值为679.823KPa，而现有技术CN100435997C的基本盖(标记为CDL)的耐压值为674.624KPa。
以202盖来例，有限元分析图表如图3所示，本实施例基本盖(标记为SLAC)的耐压值为649.35KPa，而现有技术CN100435997C的基本盖(标记为CDL)的耐压值为639.175KPa。
所述图2和图3的左侧竖向轴代表耐压值，而右侧竖向轴代表基本盖的体积，而横 轴是有限元计算的参数，故而具体曲线的峰值就代表了耐压值，而其曲线的形状、峰值出现的早晚并无特别意义。
故而，从上述有限元的分析结果可以看出：本实施例基本盖(标记为SLAC)的耐压性能相较于现有技术CN100435997C的基本盖(标记为CDL)相等甚至还略高。
实施例二：一种耐压易拉盖，包括基本盖及拉环，所述基本盖的结构同实施例一所述，这里不再赘述。
实施例三：一种耐压易拉罐，包括罐体及易拉盖，所述易拉盖包括基本盖及拉环，所述基本盖的结构同实施例一所述，这里不再赘述。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (6)

  1. 一种耐压基本盖，该基本盖的横截面上从周边至中心依次为封罐区域、埋头段、嵌环圆弧段、嵌环向上延伸段以及中心盖面，所述埋头段和嵌环向上延伸段之间形成环形凹槽；其特征在于：所述埋头段由第一直线段(L1)、第四圆弧段(R4)、第五圆弧段(R5)组成，所述第一直线段(L1)的第一端与封罐区域的对应端连接，其第二端与第四圆弧段(R4)的第一端连接，且第一直线段(L1)与第四圆弧段(R4)相切；所述第四圆弧段(R4)的第二端与第五圆弧段(R5)的第一端连接，且第四圆弧段(R4)与第五圆弧段(R5)外切；所述第五圆弧段(R5)的第二端与嵌环圆弧段(R6)的第一端连接，且第五圆弧段(R5)与嵌环圆弧段(R6)外切；所述嵌环向上延伸段由第二直线段(L2)和第七圆弧段(R7)组成，所述第二直线段(L2)的第一端与嵌环圆弧段(R6)的第二端连接，且第二直线段(L2)与嵌环圆弧段(R6)相切；所述第二直线段(L2)的第二端与第七圆弧段(R7)的第一端连接，且第二直线段(L2)与第七圆弧段(R7)相切；所述第七圆弧段(R7)的第二端与中心盖面(L3)连接，且第七圆弧段(R7)与中心盖面(L3)相切；
    所述第五圆弧段(R5)的半径大于或等于2.5mm，且小于或等于5mm；
    所述嵌环圆弧段(R6)的半径大于或等于0.25mm，且小于或等于0.6mm；
    所述第四圆弧段(R4)的半径大于或等于0.1mm，且小于或等于3mm；
    所述第五圆弧段(R5)与嵌环圆弧段(R6)的连接点为辅助点Q1，通过辅助点Q1的垂直于中心盖面(L3)的直线为辅助线A；所述第五圆弧段(R5)和嵌环圆弧段(R6)以辅助线A为分界线位于辅助线A的两侧；
    所述第五圆弧段(R5)的圆心(Y5)与嵌环圆弧段(R6)的圆心(Y6)在辅助线A上的投影距离(H1)小于或等于嵌环圆弧段(R6)半径的数值；
    所述嵌环圆弧段(R6)的圆心(Y6)至所述基本盖外缘在垂直于辅助线A方向的投影距离(W1)大于或等于0.9倍的埋头深度(T1)，且小于或等于1.15倍的埋头深度(T1)；所述埋头深度(T1)是指封罐区域与嵌环圆弧段(R6)在辅助线A上的投影最大距离；所述埋头段的埋头角β的角度大于或等于0°，且小于或等于30°；所述埋头段的埋头角β为第一直线段(L1)与垂直于中心盖面(L3)的垂直线的夹角；
    所述嵌环向上延伸段的延伸角α的角度大于或等于0°，且小于或等于40°；所述嵌环向上延伸段的延伸角α为第二直线段(L2)与垂直于中心盖面(L3)的垂直线的夹角。
  2. 根据权利要求1所述耐压基本盖，其特征在于：所述封罐区域由第一圆弧段(R1)、第二圆弧段(R2)以及第三圆弧段(R3)依次相切连接而成。
  3. 一种耐压易拉盖，包括基本盖及拉环，其特征在于：所述基本盖为权利要求1所述的 基本盖。
  4. 根据权利要求3所述耐压易拉盖，其特征在于：所述封罐区域由第一圆弧段(R1)、第二圆弧段(R2)以及第三圆弧段(R3)依次相切连接而成。
  5. 一种耐压易拉罐，包括罐体及易拉盖，所述易拉盖包括基本盖及拉环，其特征在于：所述基本盖为权利要求1所述的基本盖。
  6. 根据权利要求5所述耐压易拉罐，其特征在于：所述封罐区域由第一圆弧段(R1)、第二圆弧段(R2)以及第三圆弧段(R3)依次相切连接而成。
PCT/CN2017/101598 2017-03-07 2017-09-13 耐压基本盖、易拉盖以及带易拉盖的易拉罐 WO2018161517A1 (zh)

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