CN105834322A - Seamless tank and manufacturing method thereof - Google Patents
Seamless tank and manufacturing method thereof Download PDFInfo
- Publication number
- CN105834322A CN105834322A CN201610267092.9A CN201610267092A CN105834322A CN 105834322 A CN105834322 A CN 105834322A CN 201610267092 A CN201610267092 A CN 201610267092A CN 105834322 A CN105834322 A CN 105834322A
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- finished product
- tank
- shaped semi
- seamless tank
- seamless
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Classifications
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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
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Abstract
The invention provides a seamless tank and a manufacturing method thereof. The manufacturing method includes the following steps that a circular flat plate raw material is obtained by blanking a film-covered material; punching is conducted on the circular flat plate raw material, so that a first U-shaped semi-finished product is obtained, and the external diameter of the first U-shaped semi-finished product is made to be at least 30% smaller than the diameter of the circular flat plate raw material; primary drawing is conducted on the first U-shaped semi-finished product, so that a second U-shaped semi-finished product is obtained, and the external diameter of the second U-shaped semi-finished product is made to be at least 35% smaller than the external diameter of the first U-shaped semi-finished product; secondary drawing is conducted on the second U-shaped semi-finished product till the second U-shaped semi-finished product reaches the tank body dimension, and then a third U-shaped semi-finished product is obtained; the top of the third U-shaped semi-finished product is trimmed, so that a tank body is obtained; and the tank body and a tank cover are connected into a whole to obtain the seamless tank. According to the seamless tank and the manufacturing method thereof, the pressure resistance strength of the tank body can be improved remarkably, and the tank body is not prone to deformation and good in corrosion resistance.
Description
Technical field
The present invention relates to tank making technology, particularly relate to the manufacture method of a kind of seamless tank and seamless tank.
Background technology
Along with improving constantly of food safety requirements, country constantly puts into effect and is conducive to high quality of products research and development raw
The industry development policy produced, especially recently as the raising of living standards of the people, terminal consumer couple
The requirement of product quality is more and more higher.
Existing market is two piece can structure for the major product of filled drink or food, include can body and
Top cover, has preferably sealing compared to built-up tin.
But two piece can is mostly the thinning stretching tank that coating iron is made at present, and decay resistance is poor, with
Time its can body relatively thin, compressive resistance and weight capacity are poor, thus cause pop can be easily deformed, pile and
The problem of transport difficult.
Summary of the invention
For the problems referred to above, the present invention provides the manufacture method of a kind of seamless tank and seamless tank, does not only allow
The problem that Paint Falling easily occurs, more can effectively strengthen tank intensity.
The present invention provides the manufacture method of a kind of seamless tank, comprises the steps:
Covering material blanking is obtained circular flat board raw material；
Described circular flat board raw material is carried out cup stamping, obtains the first U-shaped semi-finished product, make described first U-shaped
The external diameter of semi-finished product at least reduces 30% than the diameter of described circular flat board raw material；
Described first U-shaped semi-finished product are carried out one-off drawing, obtains the second U-shaped semi-finished product, make described
The external diameter of two U-shaped semi-finished product at least reduces 35% than the external diameter of described first U-shaped semi-finished product；
Described second U-shaped semi-finished product are carried out succeeding stretch to tank body size, obtain the 3rd U-shaped semi-finished product；
Described 3rd U-shaped semi-finished product are carried out top deburring and obtains can body；
Described can body and cover are connected and obtain seamless tank.
In the seamless tank manufacture method of the present invention, use covering material as the manufacture base material of seamless tank,
Compared with coating material, covering material has good decoration, heat insulation, stamping resistance, corrosion resistance etc.,
Surface compact degree is high, it is not easy to the problem that comes off of printed patterns occurs, thus be accordingly used in packaged food beverage etc.
More meet food safety and sanitation requirement.The most in a manufacturing process, cup stamping process and drawing process are all entered
Go the control of processing technology, can also be efficiently against overlay film material while meeting can body dimensional requirement
The resistance that material produces due to the anisotropy of material in drawing process, it is to avoid owing to one-off drawing is caned
Can occur due to resistance excessive and occur break material situation occur.
The manufacture method of the seamless tank of the present invention, have employed covering material as produce base material, effective gram
Take the caducous problem of canned food coating in prior art, and complete can body by twice stretching
Making avoids can body and weld seam occurs, not only overcomes weld seam and the shortcoming of corrosion easily occurs and ensure that
The uniform stressed ability at each position of can body, enhances the intensity of can body.
Further, punch and die is used to carry out described cup stamping, one-off drawing and succeeding stretch operation,
Described punch is cylinder, and the longitudinal section of described die is U-shaped body, wherein, and described punch and die
Length more than the length of described can body, and the external diameter of described punch is less than the internal diameter of described die.
By this technical operation, in whole process, owing to covering material is between punch and die,
And the spacing between punch with die is fixing and engages tank skin such that it is able to ensure tank
The thickness of body will not change, although the height of can body is increasing, but in drawing process, diameter subtracts
Little part material can compensate into tank skin along with drawing process, the therefore thickness of the can body that the present invention manufactures
Degree will not be thinning because of the change of height, and compression strength has and is obviously improved effect.
Further, described covering material is film-covered iron.
Further, described film-covered iron is by fusion method or Method for bonding, and resin film is overlayed on metallic iron
Substrate on and formed.
Further, the deburring of described top includes being pressed into the top perimeter of described can body to can body outside convex
Rise and annular protrusion in arc transition.
Further, the arc radius of described arc transition is 2-3mm.
Further, described can body and cover by described annular protrusion be connected together integral obtain seamless
Tank.
Further, it is additionally included in described can body and the step of rolling muscle is set；
Described rolling muscle is the ring-shaped depression formed for a week along described can body, the cambered surface radius of described ring-shaped depression
For 1.2-1.8mm.
The invention also discloses a kind of seamless tank, by the manufacture method manufacture of any of the above-described described seamless tank.
The enforcement of the present invention, at least has the advantage that
1, use covering material as becoming to produce base material, whole production process discharged without a large amount of solvents and waste gas,
Environmental protection, inwall and content contact portion are macromolecule resin film, do not contain poisonous and harmful and add
Agent, is particularly suited for packaged food beverage etc..
2, the seamless tank flat appearance solderless seam manufactured, it is to avoid the generation of soldered corrosion situation,
And whole can body stress point is uniform, and compression strength is good.
3, can body thickness is uniform, is therefore unlikely to deform during pressurized, has higher compressive resistance and stronger
Weight capacity.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that under,
Accompanying drawing during face describes is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the can body manufacturing process design sketch in the manufacture method of the seamless tank of the present invention；
The seamless tank can body structural representation that Fig. 2 provides for inventive embodiments.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
The manufacture method of the seamless tank of the present invention includes covering material blanking is obtained circular flat board raw material；Right
Circular flat board raw material carries out cup stamping, obtains the first U-shaped semi-finished product, makes the external diameter of the first U-shaped semi-finished product extremely
Few diameter than circular flat board raw material reduces 30%；First U-shaped semi-finished product are carried out one-off drawing, obtains
Second U-shaped semi-finished product, make the external diameter of the second U-shaped semi-finished product at least subtract than the external diameter of the first U-shaped semi-finished product
Few 35%；Second U-shaped semi-finished product are carried out succeeding stretch to tank body size, obtain the 3rd U-shaped semi-finished product；
3rd U-shaped semi-finished product are carried out top deburring and obtains can body；Can body and cover being connected, it is seamless to obtain
Tank.
Fig. 1 is the can body manufacturing process design sketch in the manufacture method of the seamless tank of the present invention.Refer to Fig. 1,
Wherein (a) of Fig. 1 is the top view of the circular flat board raw material obtained after masterbatch blanking by covering material,
Cutter and circular die can be used to cut disengaging from masterbatch by being used for the tectorial backing material manufacturing seamless tank
Got off blanking.Subsequently, use cup punching die that the covering material after blanking is carried out cup stamping operation, figure
(b) of 1 shows the plan view of the first U-shaped semi-finished product.Cup stamping operation is to instigate cup punching die in external force
Effect under the circular flat board raw material after blanking is carried out depression, the wherein planar diameter of cup punching die
Less than the planar diameter of the circular flat board raw material after blanking, so that covering material generates an one end and closes
The cup-shaped models of one end open, the i.e. first U-shaped semi-finished product, in the present invention when cup stamping, control a U
The external diameter of type semi-finished product at least reduces 30% than the diameter of circular flat board raw material.In the present invention, will close
End is as at the bottom of tank, using openend as tank deck.General, blanking and cup stamping operation can be set by one
For completing simultaneously.Covering material specifically refers to be attached on metal base be formed by macromolecule resin film
Material, the present invention use covering material as manufacture seamless tank base material, this material can directly carry out oil
Ink print, it is to avoid the primary coat technique in coating iron raw material process, beneficially environmental protection, and high
The adhesive force of molecule resin film is strong, and resistance to punching property is good, and its corrosion resistance is also superior to coating iron.Meanwhile, adopt
Inwall and content contact portion with the seamless tank that covering material is base material are macromolecule resin film, no
Containing poisonous and harmful additive, especially meet the requirement of food safety and sanitation.
(c) of Fig. 1 is the plan view of the second U-shaped semi-finished product after one-off drawing completes, can from figure
After finding out that the first U-shaped semi-finished product complete one-off drawing, it highly rises appreciably, one in the present invention
During secondary stretching, the external diameter controlling the second U-shaped semi-finished product at least reduces than the external diameter of the first U-shaped semi-finished product
35%.(d) of Fig. 1 is the plan view of the 3rd U-shaped semi-finished product after succeeding stretch completes, and secondary draws
The height of the 3rd U-shaped semi-finished product after having stretched is the final height of tank body, therefore can according to tank body it
After concrete applicable cases determine the concrete height after succeeding stretch.In order to strengthen the intensity of tank body, this
Bright twice stretching of middle employing is processed finally meeting the height of tank body to covering material, this operation can gram
The clothes enhanced stretch resistance that produces due to the anisotropy of covering material, it is to avoid material goes out in drawing process
Situation about now breaking, therefore, it is possible to effectively keep the thickness of tank skin, strengthens the resistance to pressure of tank body.And warp
Can body non-welding surface seam after overstretching process, not only reduces tank body and the chance of corrosion occurs, also enter
One step improves the compression strength of tank body.
After succeeding stretch completes, top being carried out deburring process, (e) of Fig. 1 is that top deburring completes
After the design sketch of can body, wherein top is the top of can body.During aforementioned stretching, due to
The anisotropy of material, after stretching, top is waveform, in order to ensure the edge size guarantor to can body
Hold uniformity, it is simple to follow-up dual rolling sealing operation, i.e. can body operation together with sealing of tank cover
Implement, deburring process need to be carried out.
The seamless tank manufactured by said method, smooth surface, without vestige defect, has punching heat insulation, resistance to
The characteristics such as pressure, corrosion resistance, surface compact degree is high, more meets food security for packaged food beverage etc.
Hygienic requirements.
During the present invention manufactures can body, punch and die is used to carry out cup stamping, one-off drawing and two
Secondary stretched operation, punch is cylinder, and the longitudinal section of die is U-shaped body, wherein, punch and die
Length is more than the length of can body, and the external diameter of punch is less than the internal diameter of die, thus ensure that overlay film material
Material is during carrying out cup stamping, one-off drawing and succeeding stretch, and the thickness of can body does not changes.By
Fig. 1 is it can be seen that in the manufacture process of can body, its diameter is constantly reducing, due to present invention process
Particularity and the mobility of covering material, therefore its diameter reduce part material can be along with stretched
Journey compensates into tank skin, and therefore the thickness of the can body that the present invention manufactures will not be thinning because of the change of height,
Therefore its compression strength has and is obviously improved effect.During cup stamping stretches, owing to die is with convex
The mould continuous effect to covering material, therefore can be carried out necessarily the shape at the bottom of tank extruding at the bottom of tank
Modification, make can body is connected by annular arc surface transition with at the bottom of tank, concrete the most annular arc surface arc radius
Size according to die with punch determines, preferably annular arc surface can be defined to 1.5-2.0mm, should
Annular arc surface can make axial force freely be transmitted to tank underflow by can body, and then during producing or using,
Reduce the deformation extent concentrated at the bottom of tank and cause due to stress.
Simultaneously as die and punch exist difference in height, when both mutually move, covering material
Along with the Corresponding matching degree of die and punch, certain flowing can occur, can become at the bottom of final tank by towards
Annular protrusion and bottom surface outside tank and the shape that formed, wherein, convex annular is in outer rim and the ring of bottom surface
The protruding junction with bottom surface of shape has towards the ring-shaped depression in tank.Therefore, seamless tank enters is by annular
Protruding complete vertically placing of seamless tank with external contact.
In one embodiment, as preferably, above-mentioned covering material can select film-covered iron, overlay film
Iron is by fusion method or Method for bonding, is overlayed on by resin film on the substrate of metallic iron and is formed.
In one embodiment, top deburring includes being pressed into the top perimeter of can body to can body outside convex
Rise and annular protrusion in arc transition.Wherein, the arc radius of this arc transition is 2-3mm, excellent
Elect 2.5mm as, and can body and cover are connected together by annular protrusion and integral obtain seamless tank.
In order to further enhance the compressive resistance axially and radially of can body, rolling can be set on can body
Muscle.The ring-shaped depression that rolling muscle is set to be formed for one week, the cambered surface of ring-shaped depression can be selected along can body
Radius is 1.2-1.8mm.The seamless tank can body structural representation that Fig. 2 provides for inventive embodiments, should
The round muscle for ring-shaped depression that rolling muscle is cincture arranged on can body, it divides along can body for one week from top to bottom
Cloth is on whole can body.
Concrete rolling muscle shape, quantity and position, the present invention does not limits, the rolling that can body is arranged
Muscle can also be oval, and oval rolling muscle uniform ring is wound on the centre of seamless tank can body, herein, ellipse
Circular major and minor axis direction can Arbitrary Rotation in plane coordinate system.
It should be noted that the height of each rolling degree of depth of caving in of muscle or evagination can be identical or different.
Rolling muscle can utilize special equipment and mould molding, and forms mass production capabilities.Improving, tank body is strong
While degree, ensure product can machine-shaping smoothly, and accumulating, filling with sale during more
Add reliable and safety.
The manufacture method of the seamless tank that the present invention provides and seamless tank, use covering material as manufacturing base material
Can effectively strengthen resistance to punching property and the corrosion resistance of tank body, and can body non-welding surface seam, not only reduce
There is the chance of corrosion in tank body, also further increases the compression strength of tank body, is particularly suited for food
Savor the packaging of beverage etc..
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than right
It limits；Although the present invention being described in detail with reference to foregoing embodiments, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be modified by it,
Or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, and
The essence not making appropriate technical solution departs from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. the manufacture method of a seamless tank, it is characterised in that comprise the steps:
Covering material blanking is obtained circular flat board raw material；
Described circular flat board raw material is carried out cup stamping, obtains the first U-shaped semi-finished product, make described first U-shaped
The external diameter of semi-finished product at least reduces 30% than the diameter of described circular flat board raw material；
Described first U-shaped semi-finished product are carried out one-off drawing, obtains the second U-shaped semi-finished product, make described
The external diameter of two U-shaped semi-finished product at least reduces 35% than the external diameter of described first U-shaped semi-finished product；
Described second U-shaped semi-finished product are carried out succeeding stretch to tank body size, obtain the 3rd U-shaped semi-finished product；
Described 3rd U-shaped semi-finished product are carried out top deburring and obtains can body；
Described can body and cover are connected and obtain seamless tank.
The manufacture method of seamless tank the most according to claim 1, it is characterised in that use punch
Carrying out described cup stamping, one-off drawing and succeeding stretch operation with die, described punch is cylinder, described
The longitudinal section of die is U-shaped body, and wherein, the length of described punch and die is more than the length of described can body,
And the external diameter of described punch is less than the internal diameter of described die.
The manufacture method of the most seamless tank, it is characterised in that described covering material
For film-covered iron.
The manufacture method of seamless tank the most according to claim 3, it is characterised in that described film-covered iron
For by fusion method or Method for bonding, resin film being overlayed on the substrate of metallic iron and is formed.
The manufacture method of seamless tank the most according to claim 1, it is characterised in that described top is repaiied
While include being pressed into can body outer projection and the convex annular in arc transition the top perimeter of described can body
Rise.
The manufacture method of seamless tank the most according to claim 5, it is characterised in that described circular arc mistake
The arc radius crossed is 2-3mm.
The manufacture method of seamless tank the most according to claim 6, it is characterised in that described can body and
Cover is connected together by described annular protrusion and integral obtains seamless tank.
The manufacture method of the most seamless tank, it is characterised in that be additionally included in described
The step of rolling muscle is set on can body；
Described rolling muscle is the ring-shaped depression formed for a week along described can body, the cambered surface radius of described ring-shaped depression
For 1.2-1.8mm.
9. a seamless tank, it is characterised in that use the system of the arbitrary described seamless tank of claim 1-8
Make method manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610267092.9A CN105834322A (en) | 2016-04-26 | 2016-04-26 | Seamless tank and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610267092.9A CN105834322A (en) | 2016-04-26 | 2016-04-26 | Seamless tank and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN105834322A true CN105834322A (en) | 2016-08-10 |
Family
ID=56589172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610267092.9A Pending CN105834322A (en) | 2016-04-26 | 2016-04-26 | Seamless tank and manufacturing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480505A (en) * | 2018-01-22 | 2018-09-04 | 迁安市思文科德金属包装有限公司 | A kind of processing method of chemical tank |
| CN109332522A (en) * | 2018-09-05 | 2019-02-15 | 广东韩江轻工机械有限公司 | A kind of rotation mouth tank manufacturing process and rotation mouth tank |
| CN109530538A (en) * | 2017-09-21 | 2019-03-29 | 广东韩江轻工机械有限公司 | A kind of manufacture system and manufacturing method of two milk pots of film-covered iron |
| CN112275939A (en) * | 2020-09-30 | 2021-01-29 | 广东和润新材料股份有限公司 | Punch forming process of protective tank for bubble water machine |
| CN114147137A (en) * | 2021-11-23 | 2022-03-08 | 河南麦维新材料有限公司 | Manufacturing method of impact-resistant food packaging tin |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109530538A (en) * | 2017-09-21 | 2019-03-29 | 广东韩江轻工机械有限公司 | A kind of manufacture system and manufacturing method of two milk pots of film-covered iron |
| CN108480505A (en) * | 2018-01-22 | 2018-09-04 | 迁安市思文科德金属包装有限公司 | A kind of processing method of chemical tank |
| CN109332522A (en) * | 2018-09-05 | 2019-02-15 | 广东韩江轻工机械有限公司 | A kind of rotation mouth tank manufacturing process and rotation mouth tank |
| CN109332522B (en) * | 2018-09-05 | 2021-07-02 | 广东韩江轻工机械有限公司 | Manufacturing process of rotary-opening tank and rotary-opening tank |
| CN112275939A (en) * | 2020-09-30 | 2021-01-29 | 广东和润新材料股份有限公司 | Punch forming process of protective tank for bubble water machine |
| CN114147137A (en) * | 2021-11-23 | 2022-03-08 | 河南麦维新材料有限公司 | Manufacturing method of impact-resistant food packaging tin |
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| CB02 | Change of applicant information |
Address after: 101407 Beijing Huairou District wild goose Industrial Development Zone Applicant after: Origen Polytron Technologies Inc Address before: 101407 No. 7 Nan Yi Street, Yan Xi economic development zone, Huairou District, Beijing Applicant before: ORG Packaging Co., Ltd. |
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Application publication date: 20160810 |
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