CN107891585A - Prevent the method and mould structure of trapped gas at the lamp hole of product in BMC moulds - Google Patents
Prevent the method and mould structure of trapped gas at the lamp hole of product in BMC moulds Download PDFInfo
- Publication number
- CN107891585A CN107891585A CN201711236869.6A CN201711236869A CN107891585A CN 107891585 A CN107891585 A CN 107891585A CN 201711236869 A CN201711236869 A CN 201711236869A CN 107891585 A CN107891585 A CN 107891585A
- Authority
- CN
- China
- Prior art keywords
- product
- bmc
- lamp hole
- hole
- trapped gas
- 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
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002347 injection Methods 0.000 abstract description 15
- 239000007924 injection Substances 0.000 abstract description 15
- 238000007493 shaping process Methods 0.000 abstract description 3
- 239000004412 Bulk moulding compound Substances 0.000 description 37
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of method and mould structure for preventing trapped gas at the lamp hole of product in BMC moulds, belong to injection mold field.First, a kind of method for preventing trapped gas at the lamp hole of product in BMC moulds is disclosed, the exhaust passage of the position increase connection BMC mold exteriors of the lamp hole of corresponding product in the cover half of the BMC moulds.Secondly, a kind of to prevent in BMC moulds trapped gas mould structure at the lamp hole of product, the position of the lamp hole of corresponding product is provided with the exhaust passage for connecting the BMC mold exteriors in the cover half of the BMC moulds.The present invention in the cover half of BMC moulds by setting exhaust passage, so that BMC moulds, in mold-closing injection, the air extractor of injection machine is evacuated to exhaust passage, accelerates the shaping of product, the gap that the air of product injection end coordinates with insert is discharged, improves product quality.
Description
Technical field
The present invention relates to injection mold field, more particularly to a kind of side for preventing trapped gas at the lamp hole of product in BMC moulds
Method and mould structure.
Background technology
BMC is Bulk molding compounds abbreviation, i.e. BMC, and the country is commonly referred to as unsaturated poly-
Ester bulk the modern designs of plastics, there is good physical property, electrical property and mechanical property.BMC injection moulds and common thermoplasticity, thermosetting
The injection of property is somewhat different, and mainly BMC shrinkage factor is relatively low, and the one of only dry point.
Because BMC BMCs have excellent electric property, mechanical performance, heat resistance, chemical resistance, adapt to again
Various moulding process, you can meet requirement of the various products to performance, therefore increasingly liked by users.
In auto industry field, BMC is also widely used, such as the large component such as vehicle light reflector, hood, rear car
Door, electrocaloric effect, bonnet, horn box, big lamp housing and distributor rotor etc..Now, these made of BMC products be typically all by
BMC auto feeds are molded.But in injection moulding process, the lamp hole of the existing position product of BMC moulds in injection often
Produce pinprick, trapped gas phenomenon.
The content of the invention
The technical problem to be solved in the present invention is to overcome the lamp hole of product in BMC moulds in the prior art in injection
A kind of phenomena such as often producing pinprick, trapped gas, there is provided method and mould for preventing trapped gas at the lamp hole of product in BMC moulds
Structure, exhaust effect when improving injection at the lamp hole of product, to improve product quality.
The object of the present invention is achieved like this：
A kind of method for preventing trapped gas at the lamp hole of product in BMC moulds, the corresponding product in the cover half of the BMC moulds
The position increase of lamp hole connect the exhaust passages of the BMC mold exteriors.
Wherein, the exhaust passage includes being located at the blast pipe in model frame with ft connection, the edge in fixed die insert
The exhaust clearance ring that the circumference of the lamp hole of product is set, and connected in fixed die insert between the blast pipe and the exhaust
The air discharge duct of gap ring.
Wherein, the edge between plug of the exhaust clearance ring by plug hole and in plug hole is formed with gap, institute
State lamp hole and air discharge duct that plug hole connects the product.
A kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds, it is corresponding in the cover half of the BMC moulds
The position of the lamp hole of product is provided with the exhaust passage for connecting the BMC mold exteriors.
Wherein, the exhaust passage includes being located at the blast pipe in model frame with ft connection, the edge in fixed die insert
The exhaust clearance ring that the circumference of the lamp hole of product is set, and connected in fixed die insert between the blast pipe and the exhaust
The air discharge duct of gap ring.
Wherein, the edge between plug of the exhaust clearance ring by plug hole and in plug hole is formed with gap, institute
State lamp hole and air discharge duct that plug hole connects the product.
Wherein, at right angles connected between the blast pipe and air discharge duct.
Wherein, at right angles connected between the exhaust clearance ring and air discharge duct.
Wherein, the air discharge duct is arranged at the interface of the fixed die insert and the model frame.
Wherein, the top in the plug hole abuts the fixed die insert and the interface of the model frame, and the plug is certainly
It is inserted at the top of plug hole in the plug hole.
Beneficial effects of the present invention are：The present invention in the cover half of BMC moulds by setting exhaust passage so that BMC moulds
In mold-closing injection, the air extractor of injection machine is evacuated tool to exhaust passage, accelerates the shaping of product, and product is molded into end
The gap that air coordinates with insert is discharged, and improves product quality.
Brief description of the drawings
Fig. 1 is the knot of the mould structure embodiment one of the present invention for preventing trapped gas at the lamp hole of product in BMC moulds
Structure schematic diagram.
Fig. 2 is the knot of the mould structure embodiment two of the present invention for preventing trapped gas at the lamp hole of product in BMC moulds
Structure schematic diagram.
Fig. 3 is the local structural graph of the lamp housing formed by heretofore described BMC mold injections.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.
First, the invention provides a kind of method for preventing trapped gas at the lamp hole of product in BMC moulds.
The method for preventing trapped gas at the lamp hole of product in BMC moulds is specifically, right in the cover half of the BMC moulds
Answering the position of the lamp hole of product increases the exhaust passage for connecting the BMC mold exteriors.
Specifically, the exhaust passage includes being located at the blast pipe in model frame with ft connection, in fixed die insert
The exhaust clearance ring set along the circumference of the lamp hole of product, and the blast pipe and the exhaust are connected in fixed die insert
The air discharge duct of spacer ring.
More specifically, the edge between plug of the exhaust clearance ring by plug hole and in plug hole matches somebody with somebody gap structure
Into the plug hole connects the lamp hole and air discharge duct of the product.
Secondly, the invention provides a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds.
In embodiment one, as shown in fig.1, the mould structure for preventing trapped gas at the lamp hole of product in BMC moulds
Including：The position of the lamp hole 5 of corresponding product 2 is provided with the row for connecting the BMC mold exteriors in the cover half of the BMC moulds
Gas passage 3.
In the present embodiment, by setting exhaust passage in the cover half of BMC moulds so that BMC moulds in mold-closing injection,
The air extractor of injection machine is evacuated to exhaust passage, accelerates the shaping of product, and product is molded into the air of end as insert is matched somebody with somebody
The gap discharge of conjunction, to solve the problems, such as trapped gas at the lamp hole of product.
In embodiment two, as shown in fig.2, the mould structure for preventing trapped gas at the lamp hole of product in BMC moulds
On the basis of previous embodiment one, the concrete structure of the exhaust passage 3 is disclosed, the exhaust passage 3 is included positioned at fixed
With the blast pipe 31 of ft connection in framed 4, the exhaust clearance set in fixed die insert 1 along the circumference of the lamp hole 5 of product 2
Ring 33, and connect in fixed die insert the air discharge duct 32 of the blast pipe 31 and the exhaust clearance ring 33.The exhaust
Edge between plug 331 of the spacer ring 33 by plug hole 332 and in plug hole 332 is formed with gap, the plug hole 332
Connect the lamp hole 5 and air discharge duct 32 of the product 2.At right angles connected between the blast pipe 31 and air discharge duct 32.The exhaust
At right angles connected between spacer ring 33 and air discharge duct 32.The air discharge duct 32 is arranged at the fixed die insert 1 and the model frame 4
Interface.
In embodiment three, the mould structure for preventing trapped gas at the lamp hole of product in BMC moulds is in previous embodiment
On the basis of two, the mounting structure of plug is further disclosed, the plug is inserted into the plug hole from the top of plug hole
In, the top in the plug hole abuts the fixed die insert and the interface of the model frame.
Although the embodiment of the present invention is the foregoing described, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
On the premise of the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and
Modification each falls within protection scope of the present invention.
Claims (10)
- A kind of 1. method for preventing trapped gas at the lamp hole of product in BMC moulds, it is characterised in that in the cover half of the BMC moulds The position increase of the lamp hole of middle corresponding product connects the exhaust passage of the BMC mold exteriors.
- A kind of 2. method for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 1, it is characterised in that The exhaust passage includes being located at blast pipe with ft connection in model frame, in fixed die insert along product lamp hole circle The exhaust clearance ring that week is set, and connect in fixed die insert the air discharge duct of the blast pipe and the exhaust clearance ring.
- A kind of 3. method for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 2, it is characterised in that Edge between plug of the exhaust clearance ring by plug hole and in plug hole is formed with gap, and the plug hole connects institute State the lamp hole and air discharge duct of product.
- 4. a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds, it is characterised in that in the BMC moulds The position of the lamp hole of corresponding product is provided with the exhaust passage for connecting the BMC mold exteriors in cover half.
- 5. a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 4, its feature exist In the exhaust passage includes being located at the blast pipe in model frame with ft connection, along the lamp hole of product in fixed die insert The exhaust clearance ring that sets of circumference, and connect in fixed die insert the exhaust of the blast pipe and the exhaust clearance ring Groove.
- 6. a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 5, its feature exist In the edge between plug of the exhaust clearance ring by plug hole and in plug hole is formed with gap, and the plug hole connects Lead to the lamp hole and air discharge duct of the product.
- 7. a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 5, its feature exist In at right angles being connected between the blast pipe and air discharge duct.
- 8. a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 5, its feature exist In at right angles being connected between the exhaust clearance ring and air discharge duct.
- 9. a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 5, its feature exist In the air discharge duct is arranged at the interface of the fixed die insert and the model frame.
- 10. a kind of mould structure for preventing trapped gas at the lamp hole of product in BMC moulds according to claim 9, its feature It is, the top in the plug hole abuts the fixed die insert and the interface of the model frame, and the plug is from plug hole Top is inserted into the plug hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236869.6A CN107891585A (en) | 2017-11-30 | 2017-11-30 | Prevent the method and mould structure of trapped gas at the lamp hole of product in BMC moulds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236869.6A CN107891585A (en) | 2017-11-30 | 2017-11-30 | Prevent the method and mould structure of trapped gas at the lamp hole of product in BMC moulds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107891585A true CN107891585A (en) | 2018-04-10 |
Family
ID=61807044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711236869.6A Pending CN107891585A (en) | 2017-11-30 | 2017-11-30 | Prevent the method and mould structure of trapped gas at the lamp hole of product in BMC moulds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107891585A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5567430A (en) * | 1978-11-16 | 1980-05-21 | Matsushita Electric Works Ltd | Metal mold for injection molding |
| JP2003320562A (en) * | 2002-02-27 | 2003-11-11 | Mitsuboshi Belting Ltd | Injection molding equipment |
| CN201776886U (en) * | 2010-09-15 | 2011-03-30 | 宁海瑞元模塑有限公司 | Injection mold core with suction-exhaust and quick-cooling functional structure |
| CN102490289A (en) * | 2011-11-30 | 2012-06-13 | 中山市利群精密实业有限公司 | Venting auxiliary structure for plastic mould |
| CN203680747U (en) * | 2014-02-27 | 2014-07-02 | 许丹 | Insert structure for plastic injection mold |
| CN207841975U (en) * | 2017-11-30 | 2018-09-11 | 华域视觉科技(上海)有限公司 | Prevent the mould structure of trapped gas at the lamp hole of product in BMC molds |
-
2017
- 2017-11-30 CN CN201711236869.6A patent/CN107891585A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5567430A (en) * | 1978-11-16 | 1980-05-21 | Matsushita Electric Works Ltd | Metal mold for injection molding |
| JP2003320562A (en) * | 2002-02-27 | 2003-11-11 | Mitsuboshi Belting Ltd | Injection molding equipment |
| CN201776886U (en) * | 2010-09-15 | 2011-03-30 | 宁海瑞元模塑有限公司 | Injection mold core with suction-exhaust and quick-cooling functional structure |
| CN102490289A (en) * | 2011-11-30 | 2012-06-13 | 中山市利群精密实业有限公司 | Venting auxiliary structure for plastic mould |
| CN203680747U (en) * | 2014-02-27 | 2014-07-02 | 许丹 | Insert structure for plastic injection mold |
| CN207841975U (en) * | 2017-11-30 | 2018-09-11 | 华域视觉科技(上海)有限公司 | Prevent the mould structure of trapped gas at the lamp hole of product in BMC molds |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102205594B (en) | Steam type highlight and traceless injection-molding and forming process for complex precise product | |
| CN204773346U (en) | A plastic mould structure for inserts nut | |
| CN103302813A (en) | Negative pressure injection molding mold of plastic product and method thereof | |
| GB2574124A (en) | Passive horn integrally formed by using liquid silicone rubber and preparation method thereof | |
| CN207841975U (en) | Prevent the mould structure of trapped gas at the lamp hole of product in BMC molds | |
| CN202727276U (en) | Injection mould with air exhaust function | |
| CN104842504A (en) | Insert injection molding process of automobile running board | |
| CN107891585A (en) | Prevent the method and mould structure of trapped gas at the lamp hole of product in BMC moulds | |
| CN207841979U (en) | Prevent the structure of BMC products overlap at mold ejection mechanism | |
| CN109278248A (en) | The molding die and injection moulding method of automobile radiators mask decorative buckle | |
| CN203344260U (en) | Composite insulator umbrella skirt subsection injection mould provided with fitting piece | |
| CN206536787U (en) | It is a kind of to improve the mould structure of injecting products trapped gas | |
| CN109027952A (en) | A kind of Vehicle lamp structure and manufacturing method that can prevent the double-colored lens stirring of headlamp | |
| CN104669508A (en) | Technology for processing bright decoration panel | |
| CN208118314U (en) | A kind of sprue puller and reflective mirror mold | |
| CN211307280U (en) | Deep-cavity thin-wall product mold with air needle mechanism | |
| CN108327191A (en) | A kind of connecting line injection mold | |
| CN205969808U (en) | Mould that air -release efficiency is high | |
| CN109080081A (en) | A kind of structure improving polychrome mould product trapped gas | |
| CN205588592U (en) | Can improve vacuum structure that takes out that injection mold is stranded gas | |
| CN215614847U (en) | Sand core mold capable of effectively improving defect of sand shooting incompactness of narrow curved surface of air cylinder body | |
| CN208867475U (en) | Lampshade injection forming mold | |
| CN205310716U (en) | Rubber injection mold | |
| CN101195276A (en) | Insert shaping product | |
| CN220280383U (en) | Novel injection mold exhaust structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 201821 No. 767, Yecheng Road, Shanghai, Jiading District Applicant after: HUAYU VISION TECHNOLOGY (SHANGHAI) Co.,Ltd. Address before: 201821 No. 767, Yecheng Road, Shanghai, Jiading District Applicant before: SHANGHAI KOITO AUTOMOTIVE LAMP Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180410 |