CN202337441U

CN202337441U - Bottom cover for three-piece can and three-piece can

Info

Publication number: CN202337441U
Application number: CN2012200110718U
Authority: CN
Inventors: 赵宇晖; 张作全; 倪俊义
Original assignee: ORG PACKAGING CO Ltd
Current assignee: Origen Polytron Technologies Inc
Priority date: 2012-01-11
Filing date: 2012-01-11
Publication date: 2012-07-18
Anticipated expiration: 2022-01-11

Abstract

The utility model provides a bottom cover for a three-piece can and the three-piece can, wherein the bottom cover comprises a cover body, strengthening ribs and a hooked edge which are arranged integrally, wherein the bottom cover is made of double cold-reduced sheet steel which is 0.11 to 0.14 mm in thickness. The bottom cover provided by the utility model is thinner, so as to effectively reduce the manufacture cost of the bottom cover; and convenience is brought for applying ultrathin material in covers of metal cans, so as to reduce resource and energy consumption, as well as carbon emission.

Description

Built-up tin bottom and built-up tin

Technical field

The utility model relates to the packaging container of metal technology, relates in particular to a kind of built-up tin bottom and built-up tin.

Background technology

Mental package already belongs to the industry of resource-hungry.At present, built-up tin is adopted in the mental package of can tea beverage, soda, alcoholic drink and can based food mostly.

Built-up tin comprises top cover, can body and bottom, and an end and the top seal of can body are fixed, the other end and bottom sealing and fixing.The cross sectional representation of existing bottom is referring to Fig. 1, and bottom comprises body 1, reinforced rib 2 and the crochet 3 that is wholely set, and it is fixed that crochet 3 is used for the sealing of can body volume, with bottom and can body sealing and fixing.The dimensional parameters of existing crochet 3 is mainly the crochet D outer diameter ₁, crochet aperture b, crochet height h, size comes from the GB/T17590-2008 standard, the bottom crochet D outer diameter of " 200 " model, " 202 " model and " 209 " model in this standard ₁Be respectively 59.2 ± 0.02mm, 61.50 ± 0.02mm, 72.1 ± 0.02mm, crochet aperture b>=3.07mm, crochet height h is 2.0mm ± 0.02mm.The operation of volume envelope is meant and utilizes volume envelope equipment with top cover or bottom and can body sealing and fixing.Wherein, crochet D outer diameter ₁For: in the radial direction, the distance between 2 farthest on the bottom.

At present, the bottom of food and drink packaging built-up tin adopted once/and the secondary cold-rolling sheet steel processes, and steel plate thickness is 0.15mm-0.20mm.Along with soaring of the steel prices of raw and semifnished materials, adopt the cover of the tin-plate manufacturing built-up tin of above-mentioned thickness, increased the tooling cost of product.

The utility model content

The utility model provides a kind of built-up tin bottom and built-up tin of being used for, and is used to reduce the manufacturing cost of built-up tin.

The utility model provides a kind of built-up tin bottom, comprises the body, reinforced rib and the crochet that are wholely set, wherein,

Said built-up tin bottom is processed by the secondary cold-rolling sheet steel, and said secondary cold-rolling steel-sheet thickness is 0.11mm-0.14mm.

Aforesaid built-up tin bottom, preferably, said crochet width is 3.4mm-3.6mm, and the crochet developed width is 4.5mm-5mm, and crochet highly is 1.5mm-1.7mm;

Wherein, on the cross-sectional plane of said built-up tin bottom, said crochet width be start at a little and first terminal point between line segment at the projector distance of said body radial direction; Said crochet developed width is: said crochet is under the flat away from a side of said reinforced rib, said start at a little and second terminal point between along said body radial direction projector distance.

Aforesaid built-up tin bottom, preferably, rounding off between an end of said reinforced rib and the said body, rounding off between the other end of said reinforced rib and the said crochet.

Aforesaid built-up tin bottom, preferably, the quantity of said reinforced rib is two, every said reinforced rib is curved, rounding off between two said reinforced ribs.

The utility model also provides a kind of built-up tin; Comprise can body, and sealing and fixing be arranged on said can body one end the jar end, wherein; Also comprise the arbitrary described built-up tin bottom of the utility model, the crochet of said built-up tin bottom and the sealing of the other end of said can body volume are fixed.

The built-up tin bottom that the utility model provides, thickness is thinner, more enough manufacturing costs that effectively reduces the built-up tin bottom; And help realizing the application of ultra-thin materials in the metal can cover, reduce resource consumption, cut down the consumption of energy and carbon emission.

Description of drawings

Fig. 1 is the cross sectional representation of existing built-up tin bottom;

Fig. 2 a is the structural representation of the built-up tin bottom that provides of the utility model embodiment one;

Fig. 2 b is the local enlarged diagram of Fig. 2 a.

Reference numeral:

The 1-body; The 2-reinforced rib; The 3-crochet;

The 4-body; The 5-reinforced rib; The 6-crochet.

The specific embodiment

Fig. 2 a is the structural representation of the built-up tin bottom that provides of the utility model embodiment one, and Fig. 2 b is the local enlarged diagram of Fig. 2 a.

Referring to Fig. 2 a, the utility model embodiment one provides a kind of built-up tin bottom, comprises the body 4, reinforced rib 5 and the crochet 6 that are wholely set, and wherein, the built-up tin bottom is processed by the secondary cold-rolling sheet steel, and secondary cold-rolling steel-sheet thickness is 0.11-0.14mm.

Adopt the secondary cold-rolling sheet steel of above-mentioned thickness, can effectively reduce the steel that the built-up tin bottom is consumed, thereby reduce the manufacturing cost of product.Need to prove,,, when rolling up the envelope operation, should keep a close eye on the structural change of built-up tin bottom in rolling up the envelope process in that the built-up tin bottom during with can body volume envelope, the fold phenomenon may be occurred because that the thickness of steel plate has reduced is about about 25%.

Further, crochet width L is 3.4mm-3.6mm, and crochet developed width M is 4.5mm-5mm; Crochet height h is 1.5mm-1.7mm; Wherein, on the cross-sectional plane of built-up tin bottom, crochet width L starts at line segment between an A and the first terminal point C at the projector distance of body 4 radial direction; Crochet developed width M is: crochet 6 is under the flat away from a side of reinforced rib 5, starts between an A and the second terminal point B ' along body 4 radial direction projector distances.The account form of crochet height h can be with reference to the standard of existing GB/T17590-2008.

Referring to Fig. 2 b, be R point K with the nadir of concave arc part between reinforced rib 5 and the crochet 6, start at an A and be positioned in the crochet 6 and towards reinforced rib 5, R point K and the vertical distance of starting between the A are 1.05mm; The first terminal point C is the outermost place of the crochet external diameter of crochet; The second terminal point B ' is the marginal point of crochet 6 away from a side of reinforced rib 5.In Fig. 2 b, what B ' illustrated is that crochet 6 launches under the situation position of second terminal point away from reinforced rib 5 one sides; What B illustrated is under crochet 6 virgin states, the position of second terminal point.

Built-up tin bottom with above-mentioned crochet size is applicable to the can body of 5#-7# food and beverage, but is not limited only to this.Above-mentioned dimensional parameters is adopted in the crochet of built-up tin bottom; Not only can reduce and produce the required steel of built-up tin bottom; Can also adopt existing volume envelope equipment that the built-up tin bottom is rolled up the envelope operation, and facts have proved, adopt the built-up tin bottom of above-mentioned crochet size; Can be reduced in greatly that the probability of fold appears in the built-up tin bottom in the volume envelope process, thereby satisfy the volume envelope requirements of tightness of ultra-thin materials cover.

Referring to Fig. 2 a, alternatively, rounding off between an end of reinforced rib 5 and the body 4, rounding off between the other end of reinforced rib 5 and the crochet 6.

Reinforced rib be shaped as arc, body is a flat board, crochet is an arc.So-called rounding off is meant, the junction curvature second order between reinforced rib and the crochet can be led, the junction curvature second order between reinforced rib and the body can be led.Adopt rounding off can well be reduced in the stress concentration phenomenon that possibly occur in the built-up tin bottom manufacturing process, improve the performance of built-up tin bottom.

Referring to Fig. 2 a, the quantity of reinforced rib 5 can be two, and every reinforced rib 5 is curved, rounding off between two reinforced ribs 5.

After adopting thinner steel; Reduction to a certain degree possibly appear in the intensity of built-up tin bottom, and the utility model embodiment improves the intensity of built-up tin bottom through the quantity that increases reinforced rib, certainly; Also can adopt other modes, reduce the strength reduction that causes behind the thickness to improve it.

The built-up tin bottom that the utility model embodiment provides, thickness is thinner; Through optimization the relevant parameter of crochet is set, reduces the crochet size, reduce the crochet material, and guaranteed volume envelope tight ness rating, make it possible to the built-up tin bottom and still can operate according to existing volume envelope equipment; Through increasing the quantity of reinforced rib, make that built-up tin bottom intensity is able to optimize.

The utility model embodiment also provides a kind of built-up tin; Comprise can body, and sealing and fixing be arranged on said can body one end the jar end, wherein; Also comprise the described built-up tin bottom of the utility model any embodiment, the crochet of said built-up tin bottom and the sealing of the other end of said can body volume are fixed.

In the technique scheme; Under the situation that does not change can body and jar bottom structure; Reach the purpose of practicing thrift the built-up tin manufacturing cost through the structure of optimizing the built-up tin bottom, and help realizing the application of ultra-thin materials in the metal can cover, practice thrift cost; Reduce resource consumption, cut down the consumption of energy and carbon emission.

What should explain at last is: above each embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.

Claims

1. a built-up tin bottom comprises the body, reinforced rib and the crochet that are wholely set, it is characterized in that,

2. built-up tin bottom according to claim 1 is characterized in that,

The crochet width is 3.4mm-3.6mm, and the crochet developed width is 4.5mm-5mm, and crochet highly is 1.5mm-1.7mm;

3. built-up tin bottom according to claim 1 and 2 is characterized in that, rounding off between an end of said reinforced rib and the said body, rounding off between the other end of said reinforced rib and the said crochet.

4. built-up tin bottom according to claim 1 is characterized in that, the quantity of said reinforced rib is two, and every said reinforced rib is curved, rounding off between two said reinforced ribs.

5. a built-up tin comprises can body, and sealing and fixing is arranged on the jar end of said can body one end, it is characterized in that also comprise the arbitrary described built-up tin bottom of claim 1-4, the sealing of the crochet of said built-up tin bottom and the other end of said can body volume calmly.