CN106217732B - A kind of die design method of heightening type bottle cap - Google Patents
A kind of die design method of heightening type bottle cap Download PDFInfo
- Publication number
- CN106217732B CN106217732B CN201610610693.5A CN201610610693A CN106217732B CN 106217732 B CN106217732 B CN 106217732B CN 201610610693 A CN201610610693 A CN 201610610693A CN 106217732 B CN106217732 B CN 106217732B
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- Prior art keywords
- bottle cap
- contraction
- wall
- covering
- constant
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/42—Moulds for making articles of definite length, i.e. discrete articles for undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Closures For Containers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to bottle cap production technical fields, in particular to a kind of die design method of heightening type bottle cap, contraction constant of this method when the type chamber for designing mold is to estimate the filling part cooling being arranged around the top edge of T-type lid, and expand the inner wall of the covering type chamber according to the contraction constant to the distance of die cavity central axis, due to just having fully considered contraction that may be present after the cooling period in die design stage, therefore, the product is when uncolled, the distance of its covering inner wall to bottle cap central axis is greater than required dimensional standard, and after bottle cap is cooling, since the contraction of fill area can then reduce the distance of covering inner wall to bottle cap central axis, so that the distance of the covering inner wall of product to bottle cap central axis meets required dimensional standard just, so as to avoid due to fill area shrink and bring product yield decline the problem of, greatly Width improves the yield of product.
Description
Technical field
The present invention relates to bottle cap production technical field, in particular to a kind of die design method of heightening type bottle cap.
Background technique
With the raising of market technological level, more and more beverages seal bottleneck using monolithic bottle cap, in order to be adapted to
The common-use size of bottleneck, according to size distinction, the universal models of existing bottle cap have 2925 and 2621.
Common, bottle cap is made of the annulus of tubular with the cover board being set at the top of annulus.For better seal
Bottleneck, the bottom surface of cover board need to be provided with interior envelope and covering.As its name suggests, when sealing bottleneck, interior envelope is for pushing against the interior of bottleneck
Wall, covering push against the outer wall of bottleneck, that is to say, that the outer wall of interior envelope and the inner wall of covering cooperatively form the card for clamping bottleneck
Slot.In order to ensure covering and interior envelope can just seal up bottleneck, the distance of usual cover board bottom surface to annulus bottom surface is cyclic annular
Portion needs to be consistent with the height of bottleneck.That is, the height-limited height in adaptation bottleneck of the annulus of bottle cap.
On the other hand, mainly the frictional force of the striped of finger and annulus is relied on to carry out twist-off closure when user uncaps,
Therefore, when bottle cap height is lower, then it will lead to user and be difficult to twist-off closure.For this purpose, inventors herein proposing a kind of referred to as T-type lid
Novel bottle cap structure, which has sealing plate and extends ring, sealing plate from the edge at the top of annulus to
The central axis of bottle cap extends, and extending ring, top extension, cover board are set to from edge of the sealing plate far from annulus side to bottle cap
Extending the top of ring, it is fill area on the outside of the top of sealing plate and extension ring that interior envelope and covering, which are arranged, and the bottom surface of sealing plate,
The fill area fills to form filling part, and the outer wall of filling part forms striped corresponding with the striped of annulus outer wall.It, should when sealing
The bottom of the sealing plate of bottle cap and the top of bottleneck push against, and therefore, the length of extension is not limited completely by bottleneck, therefore even if need
The height for the bottleneck to be adapted to is relatively low, which also can increase the whole of bottle cap by way of increasing the height of extension
Body height, thus increase strip length, the contact area of finger and bottle cap when increasing screwing bottle cap.
However, above-mentioned bottle cap but has some problems in process of production, since bottle cap is whole, in structure, there are biggish
Variation, inventor according to product size design mold and be opened production after find, the structure when filling its yield relative to
Declined in the past, main problem is the combination of covering and bottleneck inner wall too closely.
Summary of the invention
It is an object of the invention to avoid above-mentioned shortcoming in the prior art and bottle can be greatly improved by providing one kind
The die design method of lid yield.
Invention thinking: inventor the analysis found that, the reason of causing product yield to decline in new construction, is filling part
It is caused.It in the production process of product, needs plastic heating to molten condition, then die stamp again.Conventional bottle cap
Various pieces are substantially thin wall shape, therefore, after die stamp, can be realized using the cooling structure of mold cold in mould
But, the cooling time of various pieces is substantially also all consistent, and therefore, the stress of various pieces while cooling is also almost the same, therefore
The deformation quantity of bottle cap is smaller.But novel bottle cap structure is in process of production, the amount of plastic of filling part is significantly substantially more than
Other parts, which results in cooling stage in the mould after die stamp, the heat inside filling part is difficult to dissipate outside quickly,
The especially junction of filling part and sealing plate.Since filling part can not be quickly cooled down, after product stripping, filling part is actually
It also will continue to cool down, in cooling procedure, filling part can be shunk, which will drive sealing plate and also shrink together, to lead
Covering is caused to generate displacement, covering inner wall is to the distance of bottle cap central axis less than interior sealing groove inner wall in mold to type chamber in final products
The distance of central axis.And inner end of the interior envelope since sealing plate is arranged in, it is connect substantially with extension ring, extension will not be by sealing plate
Contraction influence.Therefore, it is cold to reduce filling part for the yield of Yao Gaishan product, the structure on the one hand needing to continue to improve product
On the other hand caused contraction when but then needs just to fully consider the shrinkage factor of the product when designing mold, thus more
Reasonable each size to determine mold.The present invention provides die design method therein.
The purpose of the present invention is achieved through the following technical solutions:
A kind of die design method of heightening type bottle cap is provided, the reserved die cavity for being used to form the heightening type bottle cap should
Die cavity includes the covering type chamber for being used to form covering, it is characterised in that: estimates and is arranged around the top edge of the heightening type bottle cap
Filling part it is cooling when contraction constant, and expand according to the contraction constant inner wall of the covering type chamber to die cavity central axis
Distance.
Wherein, the first of filling part shrinks constant when estimating cooling in the heightening type bottle cap mould, and estimates the heightening type bottle
The second of filling part shrinks constant when cooling outside cover mold, estimates whole receipts according to the first contraction constant and the second contraction constant
Contracting constant.
Wherein, this method is applied to 2925 type bottle caps, and the filling part height is 1.7mm to 1.8mm, and mean breadth is
3.4mm to 3.8mm, the contraction constant are 1.18%-1.25%.
Wherein, the distance of the inner wall of the covering type chamber to mold center's axis is 13.5-14.5mm.
Wherein, this method is applied to 2621 type bottle caps, and the filling part height is 1.45mm to 1.55mm, and mean breadth is
2.7mm to 2.9mm, the contraction constant are 1.18%-1.25%.
Wherein, the distance of the inner wall of the covering type chamber to mold center's axis is 11.80-12.80mm.
Beneficial effects of the present invention: the present invention provides a kind of die design method, type chamber of this method in design mold
It is contraction constant when estimating the filling part cooling being arranged around the top edge of T-type lid, and is expanded according to the contraction constant
The inner wall of the covering type chamber after the cooling period may to the distance of die cavity central axis due to just having fully considered in die design stage
Existing contraction, therefore, for the product when uncolled, the distance of covering inner wall to bottle cap central axis is greater than required size
Standard, and after bottle cap is cooling, since the contraction of fill area can then reduce the distance of covering inner wall to bottle cap central axis, so that producing
The distance of the covering inner wall of product to bottle cap central axis meets required dimensional standard just, shrinks so as to avoid due to fill area
And the problem of bring product yield decline, the yield of product greatly improved.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is the structural schematic diagram of bottle cap corresponding to the mold of embodiment 1.
Fig. 2 is the structural schematic diagram of the mold of embodiment 1.
Specific embodiment
The invention will be further described with the following Examples.
Embodiment 1
A kind of one of specific embodiment of die design method of the present invention, this method mold to be designed is for giving birth to
Produce heightening type 2925 type bottle caps, the Bottle cap structure as shown in Figure 1, include annulus 1, cover board 2, sealing plate 3 and extend ring 4,
Sealing plate 3 extends from the edge at the top of annulus 1 to the central axis of bottle cap, extends ring 4 from sealing plate 3 far from annulus 1 one
The edge of side extends to Bottle cap top, and cover board 2 is set to the top for extending ring 4, and the bottom surface of sealing plate 3 is provided with interior envelope 6 and outer
7 are sealed, filling part 5 is formed on the outside of the top of sealing plate 3 and extension ring 4, filling part 5 includes the striped 8 of 72 with bottle cap outer wall
Corresponding reinforcing rib.The many factors such as comprehensive heat dissipation consider that the height of the filling part 5 of the type bottle cap is 1.7mm to 1.8mm,
Mean breadth is 3.4mm to 3.8mm, and wherein mean breadth refers to the average value of width of the reinforcing rib at different height.
The basic structure of the mold of all designs of the present invention is as shown in Fig. 2, include backform 21 and bed die, backform 21 and bed die
Between be reserved with gap as type chamber, backform 21 includes groove of the opening towards bed die, and bed die includes cylinder 22 and is assemblied in
Cylinder 3 in 22 inner cavity of cylinder, the top surface of cylinder 3 is higher than the top surface of the cylinder 22, to make 22 top surface of cylinder, 3 side of cylinder
Face and groove cooperatively form the filled-type chamber 24 for forming filling part 5 jointly.In addition, 3 outer wall of cylinder, 22 inner wall of cylinder cooperate
The interior envelope type chamber 25 for forming interior envelope 6 is formed, the top surface of the cylinder 22 offers the covering type chamber for forming covering 7
26。
When designing above-mentioned mold, the contraction constant to the filling part 5 according to estimation bottle cap when cooling, the contraction constant are needed
And first when needing to consider cooling in mould shrinks constant, it is often more important that second when considering cooling outside mould shrinks constant,
Comprehensive first, second contraction constant can estimate the shrinkage of the bottle cap during cooling.When designing mold, then root is needed
Expand the inner wall of the covering type chamber 26 according to the contraction constant to the distance of die cavity central axis.For the present embodiment, inventor estimates
It calculates and shrinks constant for 1.18%-1.25%, therefore, finally the distance of inner wall to the type chamber center line of determining covering type chamber 26 is
13.5-14.5mm。
Embodiment 2
The two of a kind of specific embodiment of die design method of the present invention, the main technical schemes and implementation of the present embodiment
Example 1 is identical, and unaccounted feature is no longer repeated herein using the explanation in embodiment 1 in the present embodiment.This implementation
Example the difference from embodiment 1 is that, this method mold to be designed is the 2621 type bottle caps for producing heightening type, the bottle cap
5 height of filling part be 1.45mm to 1.55mm, mean breadth is 2.7mm to 2.9mm, for the type bottle cap, inventor's estimation
Shrinking constant out is 1.18%-1.25%, and therefore, finally the distance of inner wall to the type chamber center line of determining covering type chamber 26 is
11.80-12.80mm。
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (3)
1. a kind of die design method of heightening type bottle cap, the reserved die cavity for being used to form the heightening type bottle cap, the die cavity include
It is used to form the covering type chamber of covering, it is characterised in that: estimate the filling part being arranged around the top edge of the heightening type bottle cap
Contraction constant when cooling, and the inner wall of the covering type chamber is expanded to the distance of die cavity central axis according to the contraction constant；In advance
Estimate filling part when cooling down in the heightening type bottle cap mould first shrinks constant, and estimates filling when cooling down outside the heightening type bottle cap mould
The second of portion shrinks constant, estimates whole contraction constant according to the first contraction constant and the second contraction constant.
2. a kind of die design method of heightening type bottle cap as described in claim 1, it is characterised in that: this method is applied to
2925 type bottle caps, the filling part height are 1.7mm to 1.8mm, and mean breadth is 3.4mm to 3.8mm, and the contraction constant is
1.18%-1.25%.
3. a kind of die design method of heightening type bottle cap as claimed in claim 2, it is characterised in that: the covering type chamber it is interior
The distance of wall to die cavity central axis is 13.5-14.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610610693.5A CN106217732B (en) | 2016-07-29 | 2016-07-29 | A kind of die design method of heightening type bottle cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610610693.5A CN106217732B (en) | 2016-07-29 | 2016-07-29 | A kind of die design method of heightening type bottle cap |
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| Publication Number | Publication Date |
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| CN106217732A CN106217732A (en) | 2016-12-14 |
| CN106217732B true CN106217732B (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610610693.5A Active CN106217732B (en) | 2016-07-29 | 2016-07-29 | A kind of die design method of heightening type bottle cap |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437383A (en) * | 2018-04-09 | 2018-08-24 | 宝鸡文理学院 | A kind of heightening type bottle cap die design method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044065A (en) * | 2004-09-01 | 2007-09-26 | 克雷诺瓦通用密封有限公司 | Closure |
| CN101306741A (en) * | 2007-05-17 | 2008-11-19 | 上海紫日包装有限公司 | Single-sheet plastic bottle cap |
| CN203512287U (en) * | 2013-07-11 | 2014-04-02 | 无限极（中国）有限公司 | Double-sealing anti-fake bottle cap |
| CN204433325U (en) * | 2014-11-28 | 2015-07-01 | 黄镇荣 | The plastic bottle closure that a kind of high strength antiseep is easily opened |
-
2016
- 2016-07-29 CN CN201610610693.5A patent/CN106217732B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044065A (en) * | 2004-09-01 | 2007-09-26 | 克雷诺瓦通用密封有限公司 | Closure |
| CN101306741A (en) * | 2007-05-17 | 2008-11-19 | 上海紫日包装有限公司 | Single-sheet plastic bottle cap |
| CN203512287U (en) * | 2013-07-11 | 2014-04-02 | 无限极（中国）有限公司 | Double-sealing anti-fake bottle cap |
| CN204433325U (en) * | 2014-11-28 | 2015-07-01 | 黄镇荣 | The plastic bottle closure that a kind of high strength antiseep is easily opened |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106217732A (en) | 2016-12-14 |
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