CN103479016A - Box body - Google Patents
Box body Download PDFInfo
- Publication number
- CN103479016A CN103479016A CN201210189866.2A CN201210189866A CN103479016A CN 103479016 A CN103479016 A CN 103479016A CN 201210189866 A CN201210189866 A CN 201210189866A CN 103479016 A CN103479016 A CN 103479016A
- Authority
- CN
- China
- Prior art keywords
- casing
- side wall
- wall
- sidewall
- wall thickness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/40—Details of walls
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0043—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks preventing shrinkage by reducing the wall thickness of the moulded article
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A box body for injection moulding, comprises a top end, a bottom end, and side walls, which connect the top end and the bottom end, the top end is a top wall, which is connected to the side wall, the bottom surface is an opening end, and the wall thickness of the side walls decreases from the top end to the bottom end. The product buckling deformation, which is caused by overlarge contraction deformation near the bottom end of the side walls, can be effectively improved by the decreasing thickness of side walls from the top end to the bottom end.
Description
Technical field
The present invention relates to a kind of casing, relate in particular to a kind of casing that prevents buckling deformation.
Background technology
Commonly use a kind of box part of an end opening in electronic installation, such as housing of negative ion air-cleaner etc.Please in the lump with reference to figure 1 and Fig. 2, the structural representation of the hollow box body 10 that Fig. 1 is an a kind of end opening in prior art, casing 10 adopts plastic materials, is the homogeneous wall thickness.Casing 10 is cuboid, and casing 10 comprises relative openend 101 and top 104, and four sidewalls 103 that connect described openend 101 and top 104.The cast gate of casing 10 is located at the top at top 104, and during injection mo(u)lding, the plastic material of melting injects in cavity body of mould from this cast gate, and the end near openend 101 on described sidewall 103 is filling end 102.During injection mo(u)lding, due to the filling long flow path, from top, an end of 104 flows to openend 101 to the plastic material of melting, the contraction distortion amount at the filling end relative cast gate of 102 contraction distortion amount place that is positioned at openend 101 places is larger, the contraction distortion inequality causes the product buckling deformation, affect product attractive in appearance, excessive buckling deformation affects the assembling of product.
Summary of the invention
In view of this, be necessary to provide a kind of can effectively prevent moulding the time volume contraction inequality cause the casing of buckling deformation.
A kind of casing of injection mo(u)lding, comprise top, bottom and the sidewall that connects described top and bottom, and described top is for connecting the roof of described sidewall, and bottom surface is an openend, and the wall thickness of described sidewall diminishes to bottom gradually from top.The wall thickness of described sidewall diminishes gradually to bottom from top and can effectively improve the contraction distortion excessive caused product buckling deformation of described sidewall near an end of bottom.
The accompanying drawing explanation
The structural representation that Fig. 1 is casing in prior art.
Fig. 2 is the cutaway view of II-II section in the structural representation of casing in prior art in Fig. 1.
The structural representation that Fig. 3 is casing in an embodiment.
The cutaway view of IV-IV section in the structural representation that Fig. 4 is casing in Fig. 3 mono-embodiment.
The main element symbol description
| |
10、100 |
| Openend | 101 |
| The filling |
102 |
| |
103 |
| Top | 104 |
| Top | 11 |
| |
12 |
| |
13 |
| |
14 |
| |
15 |
| |
16 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Please in the lump with reference to figure 3 and Fig. 4, the structural representation that Fig. 3 is casing 100 in an embodiment of the present invention.The plastic casing of the end opening that described casing 100 is a hollow, adopt the moulding of the plastic-injection method of forming.Described casing 100 is cuboid, and casing 100 comprises relative 11He bottom, top 12, and described top 11 is one to be filled with the filling face of plastic material, and bottom 12 is an openend.Between 11He bottom, top 12, by four sidewalls, connect, described four sidewalls are respectively front side wall 13, rear wall 14, left side wall 15 and right side wall 16.Distance between 11He bottom, described top 12 is the height of cuboid casing 100, and this height is much larger than the thickness of sidewall.
In the present embodiment, cast gate (scheming not shown) is located at 11 tops, top, and during injection mo(u)lding, the plastic material of melting injects in cavity body of mould from this cast gate, and from top, an end of 11 flows to an end of bottom 12 to the plastic material of melting.Top 11 wall thickness are even, and the wall thickness of front side wall 13, rear wall 14, left side wall 15 and right side wall 16 is attenuation gradually from the end near top 11 to the end near bottom 12.The position of described front side wall 13, rear wall 14, left side wall 15 and right side wall 16 11 junctions, Wei Qiyu top, wall thickness thickness, the wall thickness of above-mentioned each sidewall and 11 junction, top equals the wall thickness on top 11.
In the present embodiment, the wall thickness on described front side wall 13, rear wall 14, left side wall 15 and the right side wall 16 arbitrary cross section on the axial direction from the top to the bottom equates.
Due to the height of cuboid casing 100 thickness much larger than sidewall, therefore filling long flow path in injection molding process, the plastic material of melting flows in the process of an end of bottom 12 from the end on top 11, the position unit are contraction distortion nearer apart from cast gate of the sidewall of casing 100 is less, the position unit are contraction distortion far away apart from cast gate is larger, by front side wall 13, rear wall 14, the wall thickness of left side wall 15 and right side wall 16 is designed to from the end near top 11 to the end attenuation gradually near bottom 12, make apart from top the contraction distortion amount at 11 positions far away because wall thickness reduction reduces, thereby make front side wall 13, rear wall 14, the contraction distortion amount at each position of left side wall 15 and right side wall 16 is even, prevent from shrinking the inhomogeneous buckling deformation caused, and be convenient to melt and flow into the wall thickness thinner region from the thicker zone of wall thickness, so that feed supplement.
In the present embodiment, four sidewalls of casing 100, the i.e. rectangular box of an end opening of a hollow of front side wall 13, rear wall 14, left side wall 15 and right side wall 16 and top 11 compositions.In other embodiments, casing 100 can be for cylindrical, can be also various prisms, top 11 adapts to the cross sectional shape that described a plurality of sidewalls splice the cylinder of composition mutually, the common casing that forms an end opening of a hollow of described top 11 and a plurality of sidewall, the sidewall wall thickness of this casing is from 12 attenuation gradually of 11Xiang bottom, top, and sidewall adopts the wall thickness of gradual change can effectively prevent the larger contraction distortion of filling end and the product buckling deformation that causes.
Those skilled in the art will be appreciated that; above embodiment is only for the present invention is described; and not be used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above embodiment is done and variation all drop on the scope of protection of present invention.
Claims (4)
1. the casing of an injection mo(u)lding, comprise top, bottom and the sidewall that connects described top and bottom, and described top is for connecting the roof of described sidewall, and bottom surface is an openend, it is characterized in that, the wall thickness of described sidewall diminishes to bottom gradually from top.
2. the casing of injection mo(u)lding as claimed in claim 1, is characterized in that, the wall thickness of described side arm and junction, top equals the wall thickness on top.
3. the casing of injection mo(u)lding as claimed in claim 1, is characterized in that, described casing is cuboid.
4. the casing of injection mo(u)lding as claimed in claim 1, is characterized in that, described casing is cylinder.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189866.2A CN103479016A (en) | 2012-06-11 | 2012-06-11 | Box body |
| TW101122268A TW201350390A (en) | 2012-06-11 | 2012-06-21 | Housing |
| US13/689,674 US20130327781A1 (en) | 2012-06-11 | 2012-11-29 | Housing with gradually varying thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189866.2A CN103479016A (en) | 2012-06-11 | 2012-06-11 | Box body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103479016A true CN103479016A (en) | 2014-01-01 |
Family
ID=49714459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210189866.2A Pending CN103479016A (en) | 2012-06-11 | 2012-06-11 | Box body |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20130327781A1 (en) |
| CN (1) | CN103479016A (en) |
| TW (1) | TW201350390A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6578551B1 (en) * | 2017-11-15 | 2019-09-25 | 信越ポリマー株式会社 | Substrate storage container |
-
2012
- 2012-06-11 CN CN201210189866.2A patent/CN103479016A/en active Pending
- 2012-06-21 TW TW101122268A patent/TW201350390A/en unknown
- 2012-11-29 US US13/689,674 patent/US20130327781A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20130327781A1 (en) | 2013-12-12 |
| TW201350390A (en) | 2013-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |