CN100581781C - Exhaust structure of thin wall injection molding mould - Google Patents
Exhaust structure of thin wall injection molding mould Download PDFInfo
- Publication number
- CN100581781C CN100581781C CN200810240851A CN200810240851A CN100581781C CN 100581781 C CN100581781 C CN 100581781C CN 200810240851 A CN200810240851 A CN 200810240851A CN 200810240851 A CN200810240851 A CN 200810240851A CN 100581781 C CN100581781 C CN 100581781C
- Authority
- CN
- China
- Prior art keywords
- exhaust
- pedestal
- mold cavity
- transverse row
- sheet
- 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.)
- Active
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an exhaust structure for a thin-walled injection mould, which consists of a group of exhaust plates, a pedestal and a die cavity plate. The structure is characterized in that the group of the exhaust plates are arranged in the pedestal in sequence by a positioning mode of a hanging table; and then an assembly is arranged in the die cavity plate; the pedestal and the die cavity plate are connected by a mode of fixing by bolts; lateral surfaces of each exhaust plate are provided with a transverse exhaust slot and a vertical exhaust slot respectively; the upper part of the transverse exhaust slots on the lateral surface of the exhaust plate is provided with a plurality of shallow vertical exhaust slits communicated with the transverse exhaust slot; and during exhausting, gas in a die cavity reaches the transverse exhaust slot on the exhaust plate from the exhaust slits on the exhaust plate, enters the vertical exhaust slot on the exhaust plate, enters a vertical exhaust groove on the pedestal, reaches an exhaust hole on the pedestal, and is exhausted out of the die cavity through an exhaust hole on the die cavity plate.
Description
[technical field]
The invention relates to a kind of exhaust structure of mould, especially a kind of exhaust structure of thin-walled injection moulding mould belongs to thin-walled (injection) mould and makes the field.
[background technology]
The increasing rapidly of communication and portable electronic market created thin-walled used and the great demand of technology, these hand-held or portable equipments, as mobile phone, PDA and notebook computer, need the light plastic shell of littler, thinner (less than 1.2mm), also must provide the mechanical strength identical simultaneously with legacy device.Other application that shaping thin wall is new comprises the parts that are used to produce medical treatment, optics and electronic unit or have micro-scale features.Because wall thickness reduces and to have realized quality of item reduction, material economy, and has shortened cool time greatly, shaping thin wall also has been subjected to the stronger terminal consumer's of cost consciousness favor in large-scale application such as computer display casing and fascia.
The thin-walled injection moulding mould generally needs good venting quality, preferably can carry out vacuum pumping.Because the filling time is short, the injection speed height, the abundant exhaust of the mould especially abundant exhaust of flow front accumulation regions is extremely important, burns in case be stranded gas.Gas is located to discharge by core, push rod, mold insert and die joint etc. usually.The end of runner is also wanted abundant exhaust.The exhausting problem that little inserts solves the smallclothes goods is made with porous tool steel by Japan Sumitomo company.
At present the micropore class expulsion element that on the thin-walled mould, generally adopts as ventilative steel, powder sintered alloy type expulsion element because quality is loose, intensity is relatively poor, crunch during injection moulding is easily with its crimp, though also can be used as the expulsion element of thin-walled injection moulding mould, but seriously shortened the service life of mould, the service life of mould the highest can only reaching 500,000 times.Therefore, the exhaust structure that designs a kind of quick, reliable and stable thin-walled mould guarantees the quality of product for the normal moulding that ensures thin-wall part, shortens molding cycle, guarantees that having very important significance more than 1,000,000 times the service life of mould.
Because above-mentioned existing these problems, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding a kind of exhaust structure of novel shaping thin wall mould, can improve product defects and moulding problem that general existing exhaust structure or material bring, make it have more practicality, through constantly studying, design and after studying sample and improvement repeatedly, creating the present invention who has practical value finally.Prove through application in practice, complex environment when the exhaust structure of this thin-walled injection moulding mould is suitable for high speed injection motding, exhaust requirements in the time of can satisfying the thin-gage goods moulding, exhaust is smooth and easy fast, stable molding, product can not produce yet burns, is stranded bad phenomenon such as gas, product distortion, weld bond is obvious.
[summary of the invention]
Mainly provide a kind of can be effectively with the thin-walled injection moulding mould molding time gas in the mold cavity be discharged to the outer thin-walled die venting structure of mold cavity.
A kind of exhaust structure of thin-walled injection moulding mould is made up of one group of exhaust sheet, pedestal and mold cavity plate, and the quantity of exhaust sheet and size can be needed the area flexible design of exhaust by plastic product.A transverse row air drain is being opened in exhaust sheet side near the position of upper end, open one or more vertical air discharge ducts below the transverse row air drain, laterally with vertical consistent T type groove that is connected to become of the air discharge duct degree of depth, the width of air discharge duct and depth design help overflowing of gas, and and the mold cavity surface of mould keep suitable distance to bear injection pressure; Design has many shallow vertical exhaust slits that are communicated with it above the transverse row air drain of exhaust sheet side, the exhaust effect that the degree of depth, width and the quantity of the vertical exhaust slit on the exhaust sheet is reached by needs and the flash value of moulding plastics determine jointly, can stop passing through of molten plastic again when allowing gas pass through when guaranteeing moulding; The steam vent that design has a transverse row air drain and communicates with it on pedestal, this transverse row air drain is in order to be communicated with vertical air discharge duct of every exhaust sheet, make gas that every exhaust sheet discharges through the transverse row air drain on the pedestal after the passage that enters on the mold cavity plate of passage from the pedestal discharge mold cavity; The mold cavity plate is at the passage in a Position Design same aperture corresponding with the pedestal passage that the exhaust sheet is installed, and both connect to form a complete gas passing away.
The exhaust structure advantage of this thin-walled injection moulding mould: good exhaust effect effectively solves the filling difficult problem of thin wall plastics; Reduce molding cycle; At the different plastics of various flash values, the exhaust effect that can obtain by the degree of depth, width and the quantity of adjusting the exhaust slit; Effectively eliminate the bad various influences of exhaust, guarantee product quality goods; This structure can be selected the high-quality die steel for use, the injection pressure in the time of well bearing moulding, and the life-span is improved largely as ventilative steel, powder sintered alloy type than micropore class vent material, and mould normal service life is more than 1,000,000 times; The thin-walled injection moulding mould of the plastic material that the degree of depth by the shallow exhaust slit in simple adjustment exhaust sheet upper end and width are promptly used always applicable to the overwhelming majority.
[description of drawings]
Fig. 1 is a kind of exhaust structure profile of thin-walled injection moulding mould, and Fig. 2 is exhaust sheet side begin to rehearse air drain and exhaust slit arrangement preferred embodiment, and Fig. 3, Fig. 4 are begin to rehearse air drain and the optional embodiment of exhaust slit arrangement of exhaust sheet side.
[specific embodiment]
The preferred embodiment for the present invention is the begin to rehearse preferred version of air drain and exhaust slit of exhaust sheet side referring to accompanying drawing 1 for exhaust structure profile, accompanying drawing 2.
A kind of exhaust structure of thin-walled injection moulding mould, by one group of exhaust sheet 1, pedestal 2 and mold cavity plate 3 are formed, this structure has following feature: the locate mode that adopts hanging platform, one group of exhaust sheet 1 is packed in the pedestal 2 successively, then this sub-assembly is packed in the mold cavity plate 3, pedestal 2 adopts the fixing mode of screw to be connected with mold cavity plate 3, transverse row air drain b and vertical air discharge duct c that exhaust sheet 1 side has degree of depth unanimity are connected to become T type groove, many shallow vertical exhaust slit a that are communicated with it of transverse row air drain b upper end design at exhaust sheet 1, when exhaust, gas in the die cavity is from entering the vertical air discharge duct c on the exhaust sheet 1 after the exhaust slit a on the exhaust sheet 1 arrives transverse row air drain b on the exhaust sheet 1, enter the transverse row air drain d on the pedestal 2 afterwards, steam vent e to the motor seat 2 then, the steam vent f on mold cavity plate 3 discharges mold cavity.
(A) accompanying drawing 2 is depicted as exhaust sheet 1 side begin to rehearse air drain and exhaust slit arrangement preferred embodiment.Transverse row air drain b and vertical air discharge duct c that side on the exhaust sheet 1 has degree of depth unanimity are connected to become T type groove, transverse row air drain b on the exhaust sheet 1 and width and the depth design of the vertical air discharge duct c on the exhaust sheet 1 help overflowing of gas, and and the mold cavity surface of mould keep suitable distance to bear injection pressure.
(B) many shallow vertical exhaust slit a that are communicated with it of the upper end of the transverse row air drain b on above-mentioned exhaust sheet 1 design, the exhaust effect that the degree of depth, width and the quantity of exhaust slit a on the exhaust sheet 1 is reached by needs and the flash value of moulding plastics determine jointly, can stop passing through of molten plastic again when allowing gas pass through when guaranteeing moulding.
(C) the steam vent e that design has a transverse row air drain d and communicates with it on pedestal 2, transverse row air drain d is in order to be communicated with vertical air discharge duct b of exhaust sheet 1, and the passage f that enters mold cavity plate 3 from the passage e of pedestal 2 after making gas that every exhaust sheet 1 discharges through the transverse row air drain d on the pedestal 2 discharges mold cavity.
(D) mold cavity plate 3 is at the passage f in a Position Design same aperture corresponding with the pedestal 2 passage e that exhaust sheet 1 is installed, both connect to form a complete gas passing away, and last gas is discharged mold cavity through the passage f on the mold cavity plate 3.
(E) quantity of exhaust sheet 1 and size can be needed the area flexible design of exhaust by plastic product.
(F) vertical air discharge duct c of exhaust sheet 1 side can be designed as multiple shape, communicates with transverse row air drain b on the exhaust sheet 1 as long as guarantee its top, and the bottom communicates with transverse row air drain d on the pedestal 2.The optional embodiment of vertical air discharge duct c on the exhaust sheet 1 is seen accompanying drawing 3, accompanying drawing 4, and accompanying drawing 3 is designed to curved groove to the vertical air discharge duct c on the exhaust sheet 1, and accompanying drawing 4 is designed to up-narrow and down-wide groove to the vertical air discharge duct on the exhaust sheet 1.
Claims (5)
1, a kind of exhaust structure of thin-walled injection moulding mould, by one group of exhaust sheet, pedestal and mold cavity plate are formed, this structure has following feature: the locate mode that adopts hanging platform, one group of exhaust sheet is packed in the pedestal successively, then this sub-assembly is packed in the mold cavity plate, pedestal adopts the fixing mode of screw to be connected with the mold cavity plate, the side of exhaust sheet has transverse row air drain and vertical air discharge duct, design has many shallow vertical exhaust slits that are communicated with it above the transverse row air drain of exhaust sheet side, when exhaust, gas in the die cavity is from entering the vertical air discharge duct on the exhaust sheet after the exhaust slit on the exhaust sheet arrives transverse row air drain on the exhaust sheet, enter the transverse row air drain on the pedestal afterwards, steam vent to the motor seat then, the steam vent on the mold cavity plate is discharged mold cavity.
2, the exhaust structure of a kind of thin-walled injection moulding mould according to claim 1 is characterized in that the horizontal and vertical consistent T of the being connected to become type of the air discharge duct degree of depth groove on the exhaust sheet.
3, the exhaust structure of a kind of thin-walled injection moulding mould according to claim 1, it is characterized in that the steam vent that design has a transverse row air drain and communicates with it on pedestal, this transverse row air drain is in order to be communicated with vertical air discharge duct of every exhaust sheet, make gas that every exhaust sheet discharges through the transverse row air drain on the pedestal after the passage that enters on the mold cavity plate of passage from the pedestal discharge mold cavity.
4, the exhaust structure of a kind of thin-walled injection moulding mould according to claim 1, it is characterized in that the passage of mold cavity plate in a Position Design same aperture corresponding with the pedestal passage that the exhaust sheet is installed, both connect to form a complete gas passing away.
5, the exhaust structure of a kind of thin-walled injection moulding mould according to claim 1, the vertical air discharge duct that it is characterized in that exhaust sheet side can be designed as multiple shape, guarantee that top communicates with transverse row air drain on the exhaust sheet, the bottom communicates with transverse row air drain on the pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810240851A CN100581781C (en) | 2008-12-26 | 2008-12-26 | Exhaust structure of thin wall injection molding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810240851A CN100581781C (en) | 2008-12-26 | 2008-12-26 | Exhaust structure of thin wall injection molding mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101456240A CN101456240A (en) | 2009-06-17 |
| CN100581781C true CN100581781C (en) | 2010-01-20 |
Family
ID=40767498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810240851A Active CN100581781C (en) | 2008-12-26 | 2008-12-26 | Exhaust structure of thin wall injection molding mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100581781C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120357B (en) * | 2010-01-08 | 2013-08-28 | 北京东明兴业科技有限公司 | Large-area ultrathin plastic part injection mould |
| CN102019672A (en) * | 2010-12-10 | 2011-04-20 | 中山志和家电制品有限公司 | Exhaust device of injection mould |
| CN103909628B (en) * | 2013-01-08 | 2016-08-10 | 汉达精密电子(昆山)有限公司 | Automatic locking exhaust gear |
| CN103128929A (en) * | 2013-03-14 | 2013-06-05 | 苏州汇众模塑有限公司 | Horn molding automobile door plate type injection mold with exhaust structure |
| CN105365150B (en) * | 2015-12-07 | 2018-08-21 | 天鼎联创密封技术（北京）有限公司 | The producing device and production method of sealed product |
| CN106626278B (en) * | 2017-01-11 | 2019-03-01 | 广东劲胜智能集团股份有限公司 | A kind of thin glue product processing mold component of large area and its working method |
| CN107932844A (en) * | 2017-12-25 | 2018-04-20 | 苏州川鹏塑料有限公司 | Mould 3D exhaust systems for forming thin-walled modeling product |
| CN109080091A (en) * | 2018-09-26 | 2018-12-25 | 陕西智拓固相增材制造技术有限公司 | Gas permeable devices and mold |
| JP7380852B2 (en) * | 2020-04-14 | 2023-11-15 | 三菱電機株式会社 | Manufacturing method for resin molding mold and hot water storage tank unit |
-
2008
- 2008-12-26 CN CN200810240851A patent/CN100581781C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101456240A (en) | 2009-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100581781C (en) | Exhaust structure of thin wall injection molding mould | |
| CN102120357B (en) | Large-area ultrathin plastic part injection mould | |
| CN101767406B (en) | Mould for shaping mobile phone light guide panel and technology for preparing mobile phone light guide panel | |
| CN203044558U (en) | Extrusion die with improved structure | |
| CN107774796A (en) | The stretch forming process of copper alloy shock-absorbing sleeve | |
| CN200939683Y (en) | Mould core structure of injection moulding for super-thin plastic shell of cell phone battery | |
| CN211251199U (en) | A evacuating device in mould for many caves thin wall plastic part injection mould | |
| CN207735560U (en) | The aluminum alloy thin wall pieces mold of quick-replaceable mode | |
| CN206765250U (en) | Fruit juice staving precise forming mold | |
| CN211888953U (en) | Semi-solid die-casting die for large thin-wall 5G communication parts | |
| CN211616431U (en) | Injection molding processing mold with slide assembly | |
| CN210121946U (en) | Middle-positioned double-cavity die | |
| CN202336572U (en) | Mould for diecasting middle frame support of mobile phone | |
| CN207874720U (en) | A kind of radiator water chamber processing mold of one module multiple usages | |
| CN208033619U (en) | A kind of Mg alloy mobile phone cover shell mold tool | |
| CN211334535U (en) | Processing die of plastic uptake box body | |
| CN216267332U (en) | Mold structure for producing PFA product | |
| CN209792565U (en) | Forming die for slender magnesium piece | |
| CN103542710B (en) | A kind of adopt basic section combination to manufacture tuyere and manufacture method | |
| CN212350324U (en) | Easy forming die for thin-wall part | |
| CN210082288U (en) | Stamping die of new energy automobile spare part casting usefulness | |
| CN205800061U (en) | Three-hole socket sheath injection mould | |
| CN211489581U (en) | Mould with bridging structure | |
| CN217621788U (en) | Cooling device is used in foam case production and processing | |
| CN202877365U (en) | Flanging mold for formed housing trimming special-purpose mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DONGXING XINGYE SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING DONGMING XINGYE SCIENCE TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 101407 Beijing Huairou Yanqi Economic Development Zone Patentee after: DONGMING XINGYE SCIENCE TECHNOLOGY CO., LTD. Address before: 101407 Beijing city Huairou Yanqi Economic Development Zone Patentee before: Beijing Dongming Xingye Science Technology Co., Ltd. |