WO2015096559A1 - 小型三片异形罐四层卷边结构及其卷封方法 - Google Patents

小型三片异形罐四层卷边结构及其卷封方法 Download PDF

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Publication number
WO2015096559A1
WO2015096559A1 PCT/CN2014/090667 CN2014090667W WO2015096559A1 WO 2015096559 A1 WO2015096559 A1 WO 2015096559A1 CN 2014090667 W CN2014090667 W CN 2014090667W WO 2015096559 A1 WO2015096559 A1 WO 2015096559A1
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Prior art keywords
layer
seam edge
tank
edge
small
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PCT/CN2014/090667
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English (en)
French (fr)
Inventor
张筱
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东莞市汇美制罐有限公司
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Priority to US16/077,489 priority Critical patent/US20190039114A1/en
Publication of WO2015096559A1 publication Critical patent/WO2015096559A1/zh

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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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2653—Methods or machines for closing cans by applying caps or bottoms
    • B21D51/2661—Sealing or closing means therefor
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing
    • 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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins
    • 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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2653—Methods or machines for closing cans by applying caps or bottoms
    • 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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/30—Folding the circumferential seam
    • B21D51/34—Folding the circumferential seam by pressing
    • 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
    • B21D51/46—Placing sealings or sealing material
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape
    • B65D7/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape of curved cross-section, e.g. cans of circular or elliptical cross-section
    • 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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2676—Cans or tins having longitudinal or helical seams

Definitions

  • the invention relates to a crimping structure of a small shaped can and a manufacturing method thereof, in particular to a stamping and buckle bottom sealing method.
  • the bottom cover sealing method of the prior art cans is mostly formed by a roll encapsulation machine.
  • the principle is: first put the bottom of the barrel on the barrel body, then clamp with two plates, and make the barrel body together with the top of the barrel bottom Rotate and then press the crimping forming wheel up.
  • the top of the bottom of the bucket and the edge of the barrel are curled along the curve of the groove of the roller.
  • the curling is basically formed.
  • the two correction rollers are pressed up to press the curl and eliminate the rebound.
  • the curling becomes the desired shape.
  • This method is mainly used for the sealing of round barrels.
  • the sealing method is not suitable for the sealing of the shaped can.
  • the sealing of a relatively small shaped box such as a gum box adopts a shaped can winding machine, which must be a structure in which the can body is stationary and the rolled roller is shaped to move.
  • profiled cans There are two basic types of profiled cans, one is a can type and the other is a non-can type. These two methods make the design and requirements of the hemming roller more complicated and difficult to manufacture.
  • the prior art shaped can body and the bottom of the can (top) die stamping and sealing are both double-edged, the process technology is simple, and the defects are poor sealing property, easy to leak, and can not be used for requiring high sealing performance.
  • Canister
  • the object of the present invention is to provide a small three-piece canned four-layer crimping structure and a winding method thereof, which use the die stamping and crimping to change the prior art crimping structure, and effectively improve the sealing performance of the crimping. And the production method is simple and the production efficiency is high.
  • the four-layer crimping structure of the small three-piece shaped can of the present invention comprises a can body curling edge 11 made of the same type of plate material, a can bottom curling edge 21, and the can body curling edge 11 is wrapped around the can bottom curling edge 21 to roll 90 °; forming a layer 111 of the can body curling edge arranged in sequence - the bottom layer of the can bottom is 212 layers - the can edge of the can body is 113 layers - the bottom layer of the can 214 is a four-layer structure.
  • the above-mentioned small three-piece shaped can four-layer crimping structure is characterized in that the can body and the can bottom are made of 0.23 mm thick plate, and the length of the can body curling edge 11 is 4.5 mm, and the length of the can bottom curling edge 21 is It is 3mm.
  • the above-mentioned small three-piece shaped can five-layer crimping structure sealing method comprises the following steps:
  • the primary punching die is a crimping die
  • the cavity of the crimping die is a combination of a semicircular arc and a rectangle, and the diameter of the semicircular arc is 2.1 mm. Its rectangle is 2.1 ⁇ 1.05mm;
  • the secondary punching upper die is a linear die.
  • the four-layer crimping structure of the above-mentioned small three-piece shaped can is greatly enhanced compared with the prior art, and the moisture-proof performance can be effectively improved, thereby protecting the safety of the food in the box.
  • the bead does not produce a "iron tongue", and the inside of the bead is not empty. Gap, and the production method is simple and the production efficiency is high.
  • Figure 1 is a schematic view showing the structure of a small three-piece shaped can of the present invention.
  • Figure 2 is an enlarged view of the four-layer crimping structure shown in Figure 1.
  • Fig. 3 is a schematic view showing the structure of the front edge of the four-layered crimping structure of the small three-piece shaped can of the present invention.
  • Figure 4 is an enlarged view of Figure 3.
  • Figure 5 is a schematic view of a hemming die.
  • Figure 6 is a schematic view of a linear die.
  • Fig. 7 is a schematic view showing the structure of the crimping structure after crimping.
  • Figure 8 is a second schematic view of the crimping structure after crimping.
  • the four-layer crimping structure of the small three-piece shaped can of the present invention comprises a can body 1 made of the same type of plate and a can body curling edge 11 , a can bottom 2 and a can bottom curling edge 21 .
  • the can body 1 and the can bottom 2 are made of a 0.23 mm thick plate
  • the can body curling edge 11 has a length of 4.5 mm
  • the can bottom curling edge has a length of 3 mm.
  • the can body curling edge 11 is wrapped around the can bottom curling edge 21 by 90°; forming a layer of the can body curling edge 111 in sequence - the bottom of the can bottom curling layer 212 - the can body curling edge 113 layer - the can
  • the bottom 214 layer has a total of four layers. With such a crimping structure, there is no void inside the curling edge, which effectively improves the sealing property of the sealing structure.
  • the can body curling edge 11 and the can bottom curling edge 21 are rolled inwardly, so that there is no visible flange at the bottom of the can body, and the overall decorative effect of the can body is not affected by the bottom cover curling, and the appearance is also beautiful.
  • the above-mentioned small three-piece shaped can four-layer crimping structure sealing method:
  • the bottom of the can and the can body are first made according to the prior art.
  • the first step pre-bending the end portion 11a of the can body curling edge 11, the length of the pre-bending of the end portion 11a is 0.8-1.2 mm; as shown in Figs.
  • the second step the bottom 2 of the can is placed on the bottom mold, and the root 21b of the bottom edge 21 of the can is located on the same horizontal line as the root 11b of the can wrap 11; as shown in FIG.
  • the third step the bottom of the can and the can body are stamped and formed;
  • the primary punching die is a crimping die, and the cavity of the crimping die is a union of a semicircular arc and a rectangle, and a radius of the semicircular arc R It is 2.1 mm, and its rectangular long side A is 2.1, and the wide side B is 1.05 mm; as shown in FIG.
  • Step 4 Perform a second press forming on the basis of the third step to press the crimp to eliminate the rebound.
  • the secondary punching upper die is a linear die.
  • the crimping structure shown in Fig. 7 is obtained by using the linear die shown in Fig. 6.
  • different linear shapes can be obtained by changing the linear mold to meet the needs of the customer, as shown in Fig. 8 as a flat line shape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

小型异形罐的卷边结构及其制作方法，尤其是冲压扣底卷封方法。所述卷边结构包括同一型号板材制作的罐身卷缘（11）和罐底卷缘（21），所述罐身卷缘（11）包覆所述罐底卷缘（21）内卷90°，形成依次排列的罐身卷缘层（111）－－罐底卷缘层（212）－－罐身卷缘层（113）－－罐底层（214）共四层结构。采用上述小型三片异形罐四层卷边结构，罐体密封性能大大增强，可以有效地提高防潮性能，从而保护罐内食品的安全。采用上述卷封方法，卷边不会产生"铁舌"，卷边内部无空隙，并且生产方法简单，生产效率高。

Description

小型三片异形罐四层卷边结构及其卷封方法 技术领域
本发明涉及小型异形罐的卷边结构及其制作方法，尤其是冲压扣底卷封方法。
背景技术
现有技术的桶罐的底盖卷封方法大都采用卷封装配机成型，其原理是：先将桶底顶放于桶身上，然后用两盘夹紧，并使桶身与桶底顶一起旋转，再把卷边成型轮靠上去。使桶底顶和桶身边缘沿滚轮槽型曲线卷曲，当滚轮完全靠上桶身后，卷边已基本形成，最后用二道修正滚轮靠上去，将卷边压紧，并消除回弹，使卷边成为所需要的形状。此种方法主要是用于圆形桶罐的卷封。而异形罐在卷封过程中，由于四边不呈圆形，卷封部位每一点与罐身中心距离都不等，卷边滚轮不能做圆周运动，所以圆罐的滚轮作圆周运动、罐身旋转的卷封方式不适合异形罐的卷封。比如，口香糖盒等较为小的异形盒的卷封，采用异形罐卷封机，必须是罐身静止不动，而卷封滚轮做仿形运动的结构形式。异形罐仿形卷封有两种基本型式，一种是罐型靠模，另一种是非罐型靠模。此两种方式使得卷边滚轮的设计和要求更加复杂、制作较为困难，由于转弯曲率变化较大，也使得卷边滚轮在该处的惯性变化剧增，严重地影响了卷封质量，也限制了生产能力的提高。也容易出现卷封不紧、精度不够、起皱纹、卷边轧伤、破裂等不符合质量标准的现象。因此，一般小型的异形罐大多采用模具冲压卷封成型的工艺。
现有技术的异形罐罐身和罐底(顶)的模具冲压卷封都采用二重卷边，工艺技术简单，其缺陷是密封性不好，易渗漏，不能用于要求密封性较高的筒罐。
发明内容
本发明的目的是提供一种小型三片异形罐四层卷边结构及其卷封方法，它利用模具冲压卷边改变了现有技术的卷边结构，有效地提高了卷边的密封性能，并且生产方法简单，生产效率高。
本发明小型三片异形罐四层卷边结构，包括同一型号板材制作的罐身卷缘11，罐底卷缘21，所述罐身卷缘11包覆所述罐底卷缘21内卷90°；形成依次排列的罐身卷缘111层--罐底卷缘212层--罐身卷缘113层--罐底214层共四层结构。
上述的小型三片异形罐四层卷边结构，其特征在于用0.23mm厚的板材制作的罐身和罐底，其罐身卷缘11的长度为4.5mm，其罐底卷缘21的长度为3mm。
上述的小型三片异形罐五层卷边结构的卷封方法，包括以下步骤：
①选取0.23mm厚的板材下料裁切；分别制作罐身和罐底；
②将罐身卷缘11的端部预弯，该端部预弯的长度为0.8-1.2mm；
③将罐底置于罐身内套于底模上，罐底卷缘21的根部与罐身卷缘11的根部位于同一水平线上；
④将罐底、罐身进行一次冲压成型；该一次冲压上模为卷边模，所述卷边模的模腔为半圆弧与矩形的并集，其半圆弧的直径为2.1mm，其矩形为2.1×1.05mm；
⑤在步骤④的基础上再进行二次冲压成型；该二次冲压上模为线形模。
采用上述小型三片异形罐四层卷边结构，与现有技术相比其密封性能大大增强，可以有效地提高防潮性能，从而保护盒内食品的安全。采用本发明的模压卷封方法，卷边不会产生“铁舌”，卷边内部无空 隙，并且生产方法简单，生产效率高。
附图说明
图1是本发明小型三片异形罐的结构示意图。
图2是图1所示四层卷边结构放大图。
图3是本发明小型三片异形罐四层卷边结构的卷封成型前卷缘结构示意图。
图4是图3所示放大图。
图5是卷边模示意图。
图6是线形模示意图。
图7是卷边成型后卷封结构示意图之一。
图8是卷边成型后卷封结构示意图之二。
具体实施方式
下面结合附图对发明作进一步详述：
见图1、图2、图3所示，本发明小型三片异形罐四层卷边结构，包括同一型号板材制作的罐身1以及罐身卷缘11，罐底2以及罐底卷缘21。当用0.23mm厚的板材制作罐身1和罐底2时，其罐身卷缘11的长度为4.5mm，；其罐底卷缘的长度为3mm。所述罐身卷缘11包覆所述罐底卷缘21内卷90°；形成依次排列的罐身卷缘111层--罐底卷缘212层--罐身卷缘113层--罐底214层共四层结构。如此卷边结构，卷边内部无空隙，有效地提高了卷封结构的密封性。所述罐身卷缘11与罐底卷缘21向内翻卷，因此在罐身底部不会有看得见的凸缘，罐身的整体装潢效果不受底盖卷边影响，外观亦美观。
上述的小型三片异形罐四层卷边结构的卷封方法：
首先按照现有技术制作罐底和罐身。
见图3、图4、图5、图6所示，
第一步：将罐身卷缘11的端部11a预弯，该端部11a预弯的长度为0.8-1.2mm；如图3、图4所示。
第二步：将罐底2置于罐身1内套于底模上，罐底卷缘21的根部21b与罐身卷缘11的根部11b位于同一水平线上；如图4所示。
第三步：将罐底、罐身进行一次冲压成型；该一次冲压上模为卷边模，所述卷边模的模腔为半圆弧与矩形的并集，其半圆弧的半径R为2.1mm，其矩形长边A为2.1，宽边B为1.05mm；如图5所示。
第四步：在第三步的基础上再进行二次冲压成型，以将卷边压紧，消除回弹。该二次冲压上模为线形模。如图6所示，采用图6所示的线形模得到图7所示的卷边结构。当然也可以根据客户对线形的要求，通过改变线形模而得到不同的线形，满足客户的需求，如图8所示为扁平线形。

Claims (3)

  1. 小型三片异形罐四层卷边结构，包括同一型号板材制作的罐身卷缘(11)，罐底卷缘(21)，其特征在于所述罐身卷缘(11)包覆所述罐底卷缘(21)内卷90°；形成依次排列的罐身卷缘(111)层--罐底卷缘(212)层--罐身卷缘(113)层--罐底(214)层共四层结构。
  2. 根据权利要求1所述的小型三片异形罐四层卷边结构，其特征在于用0.23mm厚的板材制作的罐身和罐底，其罐身卷缘(11)的长度为4.5mm，其罐底卷缘(21)的长度为3mm。
  3. 根据权利要求2所述的小型三片异形罐五层卷边结构的卷封方法，其特征在于包括以下步骤：
    ①选取0.23mm厚的板材下料裁切；分别制作罐身和罐底；
    ②将罐身卷缘(11)的端部预弯，该端部预弯的长度为0.8-1.2mm；
    ③将罐底置于罐身内套于底模上，罐底卷缘(21)的根部与罐身卷缘(11)的根部位于同一水平线上；
    ④将罐底、罐身进行一次冲压成型；该一次冲压上模为卷边模，所述卷边模的模腔为半圆弧与矩形的并集，其半圆弧的直径为2.1mm，其矩形为2.1×1.05mm；
    ⑤在步骤④的基础上再进行二次冲压成型；该二次冲压上模为线形模。
PCT/CN2014/090667 2013-12-26 2014-11-10 小型三片异形罐四层卷边结构及其卷封方法 WO2015096559A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/077,489 US20190039114A1 (en) 2013-12-26 2014-11-10 Four-layer crimping structure of small three-piece irregular can and seaming method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310736948.9 2013-12-26
CN201310736948.9A CN103818609B (zh) 2013-11-11 2013-12-26 小型三片异形罐四层卷边结构

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US10507970B2 (en) 2013-03-07 2019-12-17 Mondelez Uk R&D Limited Confectionery packaging and method of opening
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CN112158436A (zh) * 2020-09-18 2021-01-01 东莞市铁生辉制罐有限公司 马口铁罐、马口铁封口结构及其加工工艺
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