A kind of heavy caliber packing jar
Technical field
This utility model is related to packing jar field, more particularly, to a kind of heavy caliber packing jar.
Background technology
Generally, heavy caliber can is widely used in the food such as milk powder, coffee powder, flavouring agent, Folium Camelliae sinensis, medical drugses
The packaging fields such as product, medicine.Can is mainly tank and lid cooperation, through packaging processing, forms a sealing good
Jar, is used for sealing various article up for safekeeping.Because can is used for the packaging of the powderies such as food, medicine, liquid article, therefore,
Sealing to packing jar and barrier requirement are higher;Simultaneously as the packing jar product needed after packaging is between different location
Transport, therefore, the performance requirement such as, resistance to deformation, deformation intensity pressure to packing jar and impact strength is higher.
Because the restriction of technical merit, existing heavy caliber can is generally built-up tin, also referred to as tinplate built-up tin,
The ingredient of built-up tin is can body, bottom and top cover.In the manufacturing process of built-up tin, first can body, bottom and top cover are divided
Do not carry out, can body is made by seaming or welding manner, then bottom and top cover are carried out seaming successively, what a just does complete
Built-up tin.
As shown in figure 1, being the structural representation of Traditional Packing lid, this packing jar 10 is by the aluminum on top cover 101, top cover 101
Paper tinsel 102, can body 103 and bottom 104 are constituted, and weld seam 105 is the junction of can body 103.Between top cover 101 and can body 103 and bottom
All combined using seaming mode between lid 104 and can body 103.Therefore, traditional built-up tin one has three airtight seams,
Article first, it is the weld seam 105 on can body 103, between top cover 101 and can body 103, Article 3 is in bottom 104 and can body for Article 2
Between 103.In addition to seaming, in order to reach airtight purpose, Article 2 seam is ensureing mechanical realization with Article 3 seam
In firm foundations, can also be suitably filled with glue (such as rubber or resin), these glues are stayed after crimping
In volume seam, to increase sealed reliable degree.Weld seam 105 can be realized by electric resistance welding, makes solder joint become bonding wire by mobile can body.
As known from the above, the technology manufacturing procedure preparing built-up tin is complicated, and there is the wind that cannot ensure properties of product
Danger.For example, in order to protect can body weld seam not oxidized, in general need to carry out coating process in commissure, but at coating
There is contradiction between reason and the food and medicine needing packaging, in process, slightly do not notice that humidity is processed, the weld seam of coating
Place is easy for producing oxidizing blackening phenomenon, is unsuitable for packing the food and medicine class products such as milk powder.
Therefore it provides one kind had both met environmental requirement, simultaneously can effective guarantee food, the packing jar of drug safety, show
Obtain more urgent.
Utility model content
For above-mentioned deficiency, the purpose of this utility model is to provide a kind of heavy caliber packing jar, on packing jar can body not
There is weld seam, disclosure satisfy that food and the seal request to heavy caliber packing jar for the medicine, the wind of packaged tank pollution will not be brought
Danger, ensures the security performance of food and medicine, meanwhile, has that packaging intensity height, good airproof performance, photophobism be good, environmental protection, more effectively guarantor
The performances such as barrier food safety, expand the range of packages of packing jar, and product surface glossiness significantly improves.
This utility model be the technical scheme is that by reaching above-mentioned purpose
A kind of heavy caliber packing jar it is characterised in that being made up of can body, top cover, bottom and aluminium foil, wherein, this can body with
Bottom is integrally formed, and this can body top edge has a turn-up portion, and this cap edge has a curled portion, this turn-up portion and curling
Portion formed interlocking structure, this top cover is opened in an opening, this aluminium foil be located at opening at and by heat-sealing or gluing mode with
Top seal combines.
As further improvement of the utility model, described can body top toward central axis direction necking down formed a necking part with
One tank cervical region, is connected by necking part between this tank cervical region and can body bottom, and this necking part is the platform with arc surface, described
Turn-up portion is located at the end edge of tank cervical region.
As further improvement of the utility model, the neck finish diameter of described tank cervical region is less than the diameter of can body bottom.
As further improvement of the utility model, described can body outer surface offer some rolling muscle, this rolling muscle cut
Face is parallel with top cover, and this rolling muscle is the annular groove of the whole side wall running through can body.
As further improvement of the utility model, described bottom offers some annular detent.
As further improvement of the utility model, described inside of top cover face is coated with an elastic coating.
As further improvement of the utility model, a diameter of 99-153mm of described can body, highly for 120-200mm.
As further improvement of the utility model, the height of described tank cervical region is 30-80mm, and the eck of this tank cervical region is straight
Footpath is 83-127mm.
The beneficial effects of the utility model are: do not have weld seam on packing jar can body, disclosure satisfy that food and medicine to big
The seal request of bore packing jar, will not bring the risk of packaged tank pollution, ensure the security performance of food and medicine, meanwhile,
Have that packaging intensity height, good airproof performance, photophobism be good, environmental protection, the performance such as more effectively ensure food safety, and expands the bag of packing jar
Dress scope, product surface glossiness significantly improves.
Above-mentioned be utility model technical scheme general introduction, below in conjunction with accompanying drawing and specific embodiment, to this utility model
It is described further.
Brief description
Fig. 1 is the structural representation of three packing jars of prior art;
Fig. 2 is the structural representation of the heavy caliber packing jar of this utility model embodiment one;
Fig. 3 is the profile of the heavy caliber packing jar of this utility model embodiment one;
Fig. 4 is the upward view of the heavy caliber packing jar of this utility model embodiment one;
Fig. 5 is the structural representation of the heavy caliber packing jar of this utility model embodiment two.
Specific embodiment
For further illustrating that this utility model is to reach technological means and effect that predetermined purpose is taken, below in conjunction with
Accompanying drawing and preferred embodiment, describe in detail to specific embodiment of the present utility model.
Embodiment one:
Refer to Fig. 2 and Fig. 4, the present embodiment provides a kind of heavy caliber packing jar 20, by can body 203, top cover 201, bottom
204 and aluminium foil 202 form, wherein, this can body 203 and bottom 204 are integrally formed, and this can body 203 top edge has a flange
Portion 205, this top cover 201 edge has a curled portion (not shown), and this turn-up portion 205 and curled portion form interlocking structure,
One opening (not shown) is opened on this top cover 201, this aluminium foil 202 is located at opening and by heat-sealing or gluing mode
Be combined with top seal.A diameter of 99-153mm of described can body 203, highly for 120-200mm.
As shown in Figure 3 and Figure 4, described can body 203 outer surface offer some rolling muscle 206, the section of this rolling muscle 206 with
Top cover 201 is parallel, and this rolling muscle 206 is the annular groove of the whole side wall running through can body 203, and the effect of rolling muscle 206 is mainly
In order to strengthen can body 203 intensity, because packing jar can body 203 is formed in one with bottom 204, therefore can body 203 and bottom 204
Annular junction 208 there is no weld seam or the part that combines.Some annular detent 207, ring are offered on described bottom 201
The purpose of shape indenture 207 is in order to strengthen the intensity of bottom 204, thus increasing the bulk strength of heavy caliber packing jar 20, will pack
With the impact force dispersion in transportation, the impulsive force to annular junction 208 in reduction packaging, transport, reduce product and break
The possibility split.
In the present embodiment, the effect of turn-up portion 205 is primarily to prevent the edge pair of packing jar during can opening
Finger or body other parts damage, and turn-up portion 205 is slightly slightly wide than cylindrical can body 203, in order in preparation process
Realize flange operation.
Meanwhile, described inside of top cover face is coated with an elastic coating.This elastic coating can be elastic gum film or other bullet
Property coating, is favorably improved the overall tightness of packing jar.
The preparation method of the heavy caliber packing jar that the present embodiment provides, specifically includes following steps:
(1) if preparation aluminium foil and dry thickness are the sheet metal of 0.19-0.35mm;
(2) deformation molding for the first time: a sheet metal is put on the feeding platform of servomotor transporter, and by watching
Take motor transporter to deliver to sheet metal on punching shaping mould, using punching shaping mould in 90t sawing sheet blanking units
On carry out sawing sheet punching shaping operation, punching press intensity be thousand Ns of 600-1000, wherein, with thickness as 0.21mm, arteriotomy diameter be
As a example the tinplate sheet material of 320mm, punching press intensity is 688,000 Ns, with thickness as 0.23mm, the Ma Kou as 470mm for the arteriotomy diameter
As a example iron plate material, punching press intensity is 882,000 Ns;90t sawing sheet blanking units mair motor is rotated with the speed of 50-150r/min, and
Tinplate sheet material is punched out and shallow deformation by crank rotation mould, forms a diameter of 190-230mm, be highly 35-
The first deformation mold base of 65mm;
(3) second deformation molding: mold base will be deformed for the first time and pass through servomotor transporter automatic transport to 60t deformation
On decompressor, using deformation mould, second deformation forming operation, punching press intensity are carried out on 60t conversion press device
For thousand Ns of 500-800, formed a diameter of 130-170mm, be highly 65-120mm secondary deformation mold base;
(4) third time deformation molding: secondary deformation mold base is passed through servomotor transporter automatic transport and is punched to 45t
On device, using deformation mould, third time is carried out on 45t blanking units and deform forming operation, form a diameter of 100-
150mm, the one-shot forming semi-finished product highly for 110-250mm, this one-shot forming semi-finished product is can body 203 and bottom 204 one
The packing jar semi-finished product of molding, and form a tank mouth on this can body 203 top;
(5) clip Punching Technology and size are finely tuned: using clip mould, on 60t conversion press device, tank mouth is carried out
Flange processing forms turn-up portion 205, and the height and diameter of the one-shot forming semi-finished product with turn-up portion 205 is finely adjusted,
Form a diameter of 99-153mm, the post forming semi-finished product highly for 120-200mm;
(6) another sheet metal is put on the feeding platform of servomotor transporter, and dress is transmitted by servomotor
Put and deliver to sheet metal on punching shaping mould, carry out sawing sheet punching using punching shaping mould on 90t sawing sheet blanking units
Molded operation, punching press intensity is thousand Ns of 688-882, and 90t sawing sheet blanking units mair motor is turned with the speed of 50-150r/min
Dynamic, form the top cover 201 with opening;And utilize clip mould, top cover 201 edge is crimped with processing and forms curled portion,
Form the top cover 201 matching with post forming semi-finished product tank mouth;
(7) utilize sealing roller, the turn-up portion 205 of post forming semi-finished product is closely hooked together securely in top cover 201
Curled portion forms the structure of interlocking, and this interlocking structure is compressed, then aluminium foil 202 is positioned over the indentation, there of top cover 201, passes through
The bonding mode sealing of heat-sealing or gluing combines, and forms heavy caliber packing jar.Generally, aluminium foil fills in food or medicine
After being loaded onto packing jar, then with top cover 201, combination is sealed by heat-sealing or gluing mode.
Sheet metal in described step (1) is tinplate sheet material, and the composition of this tinplate sheet material includes cold-reduced sheet and plating
Tin layers., it should be noted that the material preparing packing jar is not limited to tinplate sheet material, the present embodiment is using the Ma Kou of safety for here
Iron material.
Flange processing method in described step (5) is: using mould crimp flange mode.Because clip mould is
Precision die, 60t conversion press device is high accuracy punching system, therefore, through turning over that clip Punching Technology step process is crossed
While having safety, feature attractive in appearance.
Described step (5) is further comprising the steps of: post forming semi-finished product is positioned on rib rolling die and carries out rolling at muscle
Reason, forms some rolling muscle 206 on post forming semi-finished product.By rolling muscle process step, can preferably strengthen can body
Intensity.Described rolling muscle can be one or more, is determined according to packing jar height size, packaging article components and feature
Fixed.
Described step (6) is further comprising the steps of: coats an elastic coating in inside of top cover face.This elastic coating can be
Elastic glued membrane or other elastic coating, are favorably improved the overall tightness of packing jar.
In the present embodiment, in described step (7), described heat-sealing bonding mode includes board-like heat-sealing, roller type seals,
The modes such as belt heat-sealing, the heat-sealing of slip adding pressure type, pulse heat seal, Fuse Type heat-sealing, high-frequency heat sealing or ultrasonic wave heat-sealing.
In described step (7), the combination of the turn-up portion 205 of post forming semi-finished product and the curled portion of top cover 201, adopt
Be dual rolling sealing mode, after the curled portion of the turn-up portion of post forming semi-finished product 205 and top cover 201 closely hooks together, form five
Layer material, respectively three layers top cover, two-layer can body.
After the present embodiment preparation method prepares heavy caliber packing jar, the thickness of tinplate sheet material is still 0.19-
0.35mm, that is, in process of production, the deformation range of tinplate sheet material material thickness is almost nil.
By the preparation method of the present embodiment, when preparing can body with bottom integrally formed packing jar semi-finished product, respectively
Carry out deformation molding for the first time, second deformation molding and third time deformation molding, after deformation molding for the first time, obtained first
Deformation mold base;After second deformation molding, obtain secondary deformation mold base, compared with first deformation mold base, secondary deformation mold base is relatively
Deep, bottom area is less;After third time deformation molding, obtain packing jar semi-finished product, compared with secondary deformation mold base, packing jar
Can body is deeper, and bottom area is less, close to shape and the size of target product packing jar.
Integral molding techniques are widely used in packing tin for foodstuff field in itself, but are only limitted to small-bore packing jar, for example
Canned food tank, laughable tank etc..Cannot solve how to obtain the integrally formed technology of heavy caliber packing jar in prior art always
Difficult point.This utility model embodiment, using reliable controlled technical process, realizes being integrally formed of heavy caliber packing jar, obtains not
Have weld seam is integrally formed heavy caliber packing jar, thus fundamentally reduce prior art in weld seam to food and medicine strap
The risk come.
Embodiment two:
Refer to Fig. 5, the present embodiment provides a kind of heavy caliber packing jar 50, by can body 503, top cover 501, bottom 504 and
Aluminium foil 502 forms, and wherein, this can body 503 and bottom 504 are integrally formed, and this can body 503 top edge has a turn-up portion (figure
Not shown in), this top cover 501 edge has a curled portion (not shown).The present embodiment and the main distinction of embodiment one
It is: described can body 503 top forms a necking part 509 and a tank cervical region 511, this tank cervical region 511 toward central axis direction necking down
It is connected by necking part between can body 503 bottom, this necking part 509 is the platform with arc surface, described turn-up portion is located at
The end edge of tank cervical region 511, the neck finish diameter of described tank cervical region 511 is less than the diameter of can body 503 bottom, meanwhile, necking part
509 still fall within a part for can body 503 with tank cervical region 511, i.e. necking part 509, tank cervical region 511 and can body 503 portion integral
Molding, the junction between necking part 509 and can body 503, necking part 509 are not all had with the annular junction 510 of tank cervical region 511
There is weld seam.The turn-up portion of this necking part 509 end edge forms interlocking structure with curled portion, this top cover 501 is opened in one and opens
Mouth (not shown), this aluminium foil 502 is located at opening and is combined with top seal by heat-sealing or gluing mode.
Meanwhile, a diameter of 99-153mm of described can body 503, highly for 120-200mm;The height of described tank cervical region 511
For 30-80mm, the neck finish diameter of this tank cervical region 511 is 83-127mm.
The preparation method of heavy caliber packing jar 50 that the present embodiment the provides difference main with the preparation method of embodiment one
It is, described step (5) is further comprising the steps of: it is enterprising that the post forming semi-finished product after rolling muscle is processed are positioned over necking die
Row necking down is processed, and forming neck finish diameter is 83-127mm, and tank neck 511 height is the post forming semi-finished product of 30-80mm.This step
In flange processing method be: using mould be punched flange mode.By necking down process step in order to make tank neck 511
Eck size and top cover 501 and the matching size of aluminium foil 502 close, the overall tinplate sheet material chi reducing required for packing jar 50
Very little.
Here is it should be noted that the rolling muscle process step of embodiment one is permissible with the contracting necking down process step of embodiment two
Successively complete, or the rib rolling die on rolling muscle, necking down combination unit, necking die or rolling muscle and necking down assembling die respectively
Complete.
This utility model heavy caliber packing jar is the appellation relative with small-bore packing jar, in general refers to caliber size
More than or equal to 99 millimeters, body shape substantially cylindrical packing jar, the feature of this kind of packing jar is in same packing timber
In the case of material, carry food more, that expendable is larger or medicine, such as milk powder, coffee powder, cocoa powder etc..Heavy caliber
, due to not having weld seam, food or medicine therefore, it is possible to ensure wherein carrying will not be because of the oxidations of packing jar weld seam for packing jar
And go bad.
Emphasis of the present utility model essentially consists in, and packing jar can body does not have weld seam, disclosure satisfy that food and medicine pair
The seal request of heavy caliber packing jar, will not bring the risk of packaged tank pollution, ensure the security performance of food and medicine, with
When, have that packaging intensity height, good airproof performance, photophobism be good, environmental protection, the performance such as more effectively ensure food safety, and expands packing jar
Range of packages, product surface glossiness significantly improves.
The above, be only preferred embodiment of the present utility model, not technical scope of the present utility model is made
Any restriction, therefore using the technical characteristic identical or approximate with this utility model above-described embodiment, all in guarantor of the present utility model
Within the scope of shield.