CN212826766U - Special-shaped section bottle blank structure - Google Patents
Special-shaped section bottle blank structure Download PDFInfo
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- CN212826766U CN212826766U CN202021049978.4U CN202021049978U CN212826766U CN 212826766 U CN212826766 U CN 212826766U CN 202021049978 U CN202021049978 U CN 202021049978U CN 212826766 U CN212826766 U CN 212826766U
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Abstract
The utility model discloses a dysmorphism cross-section bottle base structure, the base body of dysmorphism cross-section bottle base structure includes the annular cross-section, the cross-section change section, dysmorphism cross-section has the dysmorphism cross-section, the interior closed line of dysmorphism cross-section and the wall thickness that the shortest distance between the outer closed line is the bottle base structure, outer closed line and interior closed line are the ripple line, equal with the length of dysmorphism cross-section bottle base structure, the annular cross-section bottle base structure that the gram weight equals compares, the tensile ratio of bottle blowing of dysmorphism cross-section bottle base structure keeps under the prerequisite that equals with the tensile ratio of bottle blowing of annular cross-section bottle base structure, the girth of dysmorphism cross-section is greater than the girth of circle cross-section, and. The special-shaped cross-section bottle blank structure can effectively shorten the cooling time of the injection molding of the bottle blank and the preheating time before bottle blowing, thereby shortening the whole processing period of the bottle and improving the production efficiency.
Description
Technical Field
The utility model relates to a bottle base technical field especially relates to a dysmorphism cross-section bottle base structure.
Background
Due to the characteristics of high efficiency and manufacturability of injection molding, injection molding has become the most common method for manufacturing plastic products, and has a very important position in the plastic processing industry. The cooling is the most important stage in the injection molding process, and has a great influence on the quality and the production efficiency of the product, the cooling time occupies about 2/3 of the whole injection molding time, and the cooling time is a key influence on the product forming period and the energy consumption. At present, the research on the cooling technology for accelerating the formed part at home and abroad mainly focuses on accelerating the heat dissipation part of the mold, however, because the heat conductivity coefficient of the bottle blank material is extremely small, the self heat resistance is far greater than the heat resistance of a cooling system and the mold in the cooling process, the self heat resistance of the bottle blank is the main factor influencing the cooling efficiency, and the reduction of the cooling time is substantially limited by improving the heat exchange coefficient of cooling water and the heat conductivity coefficient of the mold material in the prior art.
Disclosure of Invention
For solving the not enough of prior art existence, the utility model provides a dysmorphism cross-section bottle base structure, it is from the bottle base, carries out new design to the bottle base structure, accelerates injection moulding's cool time through changing bottle base structural shape.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a bottle blank structure with a special-shaped section comprises a bottle mouth, a blank body and a blank bottom, wherein the blank body comprises an annular section, a section changing section and a special-shaped section, the annular section is connected with the bottle mouth, the special-shaped section is connected with the blank bottom, the section changing section is a transition section between the annular section and the special-shaped section,
the special-shaped section is provided with a special-shaped section, the special-shaped section is composed of an inner closing line and an outer closing line, the shortest distance between the inner closing line and the outer closing line is the wall thickness of the bottle blank structure, the outer closing line and the inner closing line are corrugated lines and comprise a plurality of wave crests and wave troughs,
compared with the annular-section bottle blank structure with the same length and the same gram weight of the special-shaped-section bottle blank structure, the annular-section bottle blank structure is provided with the annular section, the circumference of the special-shaped section is larger than that of the annular section on the premise that the bottle blowing stretching ratio of the special-shaped-section bottle blank structure is equal to the bottle blowing stretching ratio of the annular-section bottle blank structure, and the wall thickness of the special-shaped-section bottle blank structure is smaller than that of the annular-section bottle blank structure.
The utility model discloses conventional annular cross section bottle base structure improves among the prior art, keeps the length and the gram weight of bottle base unchangeable in the time of the modified, changes annular cross section bottle base structure into special-shaped cross section bottle base structure, and the special-shaped cross section of this special-shaped cross section bottle base structure is compared in the ring cross section of annular cross section bottle base structure, and its cross sectional area is the same, and cross-section week length increases, and the bottle base wall thickness reduces, and such characteristic makes the utility model discloses an irregular cross section bottle base structure has following beneficial effect:
(1) because the circumference of the section is increased, the contact area of the bottle blank and the blowing mold is increased, thereby shortening the cooling time of injection molding of the bottle blank, shortening the whole injection molding period and improving the production efficiency of the bottle blank;
(2) the wall thickness of the bottle blank is reduced, so that the heat conductivity of the bottle blank is better, the bottle blank is more uniformly preheated before blow molding, and the heating time is shortened, so that the energy consumption in the preheating process is reduced;
(3) the utility model discloses change annular cross section bottle base structure into special-shaped cross section bottle base structure, nevertheless the stretch ratio of bottle base keeps unchangeable, and consequently the blowing performance of bottle base does not change, does not influence the bottle quality that the blowing formed.
Drawings
The invention will be further described and illustrated with reference to the accompanying drawings.
Fig. 1a is a schematic representation of a prior art bottle preform.
FIG. 1b is a cross-sectional view A-A of FIG. 1 a.
Fig. 2 is a schematic diagram of the structure of the bottle blank with the special-shaped cross section of the present invention.
Fig. 3a is a cross-sectional view of a profiled cross-section of the profiled cross-section preform structure of fig. 2.
Fig. 3b is a schematic diagram of the modeling of the profiled cross-section of fig. 3 a.
Detailed Description
The technical solution of the present invention will be more clearly and completely explained by the description of the preferred embodiments of the present invention with reference to the accompanying drawings.
The prior art shown in fig. 1a and 1b is a conventional preform structure, and the conventional preform structure 10 ' includes a bottle opening 1 ', a body 2 ', and a base 3 ', and the body 2 ' is located between the bottle opening 1 ' and the base 3 '. As shown in fig. 1b, when the blank 2 ' has a circular cross section, the outer diameter of the circular cross section is m, the inner diameter of the circular cross section is n, the thickness t ' of the blank 2 ' is m-n, and the area of the circular cross section is:
for shortening the cooling time of the plastic bottle injection molding, the utility model discloses study and design the shape of bottle base structure.
As shown in fig. 2, the bottle blank structure 20 with irregular cross section of the present invention includes a bottle mouth 1, a blank body 2, and a blank bottom 3, wherein the blank body 2 is located between the bottle mouth 1 and the blank bottom 3. Specifically, the blank body 2 includes a ring-shaped section 21, a section changing section 22, and a deformed section 23. Wherein, the ring-shaped section 23 is connected with the bottle mouth 1 and has a ring-shaped section shape; the shaped section segment 23 is connected to the blank bottom 3 and has a shaped cross-sectional shape, where "shaped" is a cross-sectional shape different from the circular cross-sectional shape with respect to the circular shape; the cross-sectional variation 22 is a transition between the annular cross-sectional section 21 and the profiled cross-sectional section 23, which transitions from a circular shape to a profiled contour.
The blank bottom 3 comprises an arc changing section 31 and a spherical section 32, wherein the arc changing section 31 is connected with the special-shaped section 23, gradually changes from a special-shaped contour to a circular contour, and is in arc transition connection with the spherical section 32. The maximum diameter d of the spherical segment 32 is not less than φ 8.
The utility model discloses shorten injection moulding cooling time's principle is: on the premise of not changing the gram weight of the conventional bottle blank, the cross section perimeter of the bottle blank structure is increased and the wall thickness of the bottle blank is reduced by changing the cross section shape of the bottle blank, so that the contact area between the bottle blank and a bottle blowing mold is substantially increased, the cooling time is shortened, the injection molding period and even the whole production period are shortened, the energy consumption is reduced, and the production efficiency is improved.
Based on the above principle, the utility model provides a specific implementation mode of dysmorphism cross-section bottle base structure as follows:
as shown in fig. 3a and 3b, in this embodiment, the cross-sectional shape of the shaped cross-sectional section 23 is formed by an outer closed line 210b and an inner closed line 220b, both the outer closed line 210b and the inner closed line 220b are in the shape of a corrugated line, and the outer closed line 210b and the inner closed line 220b formed by the corrugated line include a plurality of peaks 211b, 221b and valleys 212b, 222 b.
The ripple shape in this embodiment is substantially composed of a plurality of arc segments, the number of ripples is determined by the included angle corresponding to the arc segments, and the amplitude of the ripples is directly influenced by the position and the diameter of the center of the arc. As shown in fig. 3b, a method for generating a curve model will be described below by taking one of the curves as an example.
In order to ensure that the stretch ratio of the bottle preform structure with the irregular cross section is equal to that of the bottle preform structure with the circular cross section shown in fig. 1a and 1b, the outer closed line 210b and the inner closed line 220b are respectively positioned near the outer circular ring and the inner circular ring of the circular cross section, preferably, the outer corrugated line (i.e. the outer closed line 210b) and the inner corrugated line (i.e. the inner closed line 220b) are respectively distributed on the outer circular ring and the inner circular ring, and the area of the cross section (hereinafter referred to as the "inner and outer corrugated cross section") formed by the corrugated outer closed line 210b and the inner closed line 220b and the area S of the circular cross section are respectively equal to that of theRing (C)Equals to give the number of wave crests x, D1、D2、D3、D4Three ofObtaining the unique corrugated section by the value, presetting the number x and D of wave crests1、D2Obtaining D through the special-shaped section model3、D4、D5、D6。
Wherein D is1Represents the distance from the center of the circular cross section to the center of the wave crest of the inner corrugated line, D2Indicating the distance D from the center of the circular cross-section to the center of the trough of the outer corrugated line3Showing the trough diameter of the outer corrugation line, D4Showing the valley diameter of the inner wavy line, D5Denotes the crest diameter of the inner wavy line, D6The peak diameter of the outer corrugation lines is indicated.
The process of establishing the model of the inner and outer corrugated sections is as follows:
radius of the left end and the right end of the outer corrugation:
external corrugation tip radius:
order to
Wherein m and n are respectively the outer diameter and the inner diameter of the annular section bottle blank structure.
Circle D4And D5Tangency, the sum of radii equal AB:
2-8 to 2-11 in a united vertical manner
The corrugated cross-sectional area is:
the corrugated section has the same area as the section of the circular ring:
Swave (wave)＝SRing theta (2-15)
Circle D3And D6Tangency, the sum of radii equal AB:
2-2, 2-14 to 2-16 have
Order to
Then there is
D3＝2AB-D6 (2-21)
The thickness of the corrugation is:
thus, a model of the inner and outer corrugated cross-section was obtained.
The utility model discloses a improve current conventional annular cross-section bottle base structure, under the prerequisite that does not change bottle base grammes per square metre, change the annular cross-section of annular cross-section bottle base structure into special-shaped cross-section to increase the cross-section girth of bottle base structure, increased the area of contact of bottle base and bottle blowing mould in essence, therefore can effectively shorten the cooling time of bottle base injection moulding; and the wall thickness of the bottle blank with the special-shaped cross section is reduced compared with that of the bottle blank with the conventional annular cross section, so that the bottle blank with the special-shaped cross section has better heat conductivity, when the bottle blank is blown into a bottle, the bottle blank is uniformly preheated, the heating time is shortened, and the energy consumption of heating the bottle blank and the energy consumption of bottle blowing pressure are reduced. In addition, the change of the sectional shape of the bottle blank does not affect the stretch ratio of the bottle blank, and the stretch ratio is kept unchanged from the original conventional bottle blank, so that the blow molding property of the bottle is kept unchanged, and the bottle with the same quality requirement can be formed by blow molding.
The above detailed description merely describes the preferred embodiments of the present invention and does not limit the scope of the present invention. Without departing from the design concept and spirit scope of the present invention, the ordinary skilled in the art should belong to the protection scope of the present invention according to the present invention provides the text description and drawings to the various modifications, replacements and improvements made by the technical solution of the present invention. The scope of protection of the present invention is determined by the claims.
Claims (2)
1. The utility model provides a dysmorphism cross section bottle base structure, includes at the bottom of bottleneck, base body, the base, its characterized in that:
the blank body comprises an annular section, a section change section and a special-shaped section, the annular section is connected with the bottle mouth, the special-shaped section is connected with the blank bottom, the section change section is a transition section between the annular section and the special-shaped section,
the special-shaped section is provided with a special-shaped section, the special-shaped section is composed of an inner closing line and an outer closing line, the shortest distance between the inner closing line and the outer closing line is the wall thickness of the bottle blank structure, the outer closing line and the inner closing line are corrugated lines and comprise a plurality of wave crests and wave troughs,
compared with the annular-section bottle blank structure with the same length and the same gram weight of the special-shaped-section bottle blank structure, the annular-section bottle blank structure is provided with an annular section, the circumference of the special-shaped section is larger than that of the annular section on the premise that the bottle blowing stretching ratio of the special-shaped-section bottle blank structure is equal to the bottle blowing stretching ratio of the annular-section bottle blank structure, the wall thickness of the special-shaped-section bottle blank structure is smaller than that of the annular-section bottle blank structure,
the area of the special-shaped section bottle blank structure is equal to the area of the annular section bottle blank structure,
the corrugated lines forming the outer closed line and the inner closed line are respectively distributed on the outer circular ring and the inner circular ring of the circular ring-shaped section.
2. The profiled cross-section bottle preform structure of claim 1, wherein said preform base comprises a circular arc variation section and a spherical section, said circular arc variation section being connected to said profiled cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049978.4U CN212826766U (en) | 2020-06-09 | 2020-06-09 | Special-shaped section bottle blank structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049978.4U CN212826766U (en) | 2020-06-09 | 2020-06-09 | Special-shaped section bottle blank structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212826766U true CN212826766U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021049978.4U Active CN212826766U (en) | 2020-06-09 | 2020-06-09 | Special-shaped section bottle blank structure |
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| CN (1) | CN212826766U (en) |
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- 2020-06-09 CN CN202021049978.4U patent/CN212826766U/en active Active
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