CN108312438A - BMC injection molding molds - Google Patents
BMC injection molding molds Download PDFInfo
- Publication number
- CN108312438A CN108312438A CN201810100572.5A CN201810100572A CN108312438A CN 108312438 A CN108312438 A CN 108312438A CN 201810100572 A CN201810100572 A CN 201810100572A CN 108312438 A CN108312438 A CN 108312438A
- Authority
- CN
- China
- Prior art keywords
- mold
- gating insert
- insert
- gating
- die ontology
- 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
- 238000001746 injection moulding Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims description 5
- 238000001727 in vivo Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 239000004412 Bulk moulding compound Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010959 steel 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
- B29C45/2711—Gate inserts
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C2045/2775—Nozzles or parts thereof being mountable or exchangeable from the front side of the mould half
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of BMC injection moldings molds, including die ontology and gating insert, the gating insert is removably secured in the groove at the cast gate of the die ontology, and the exposed surface of the gating insert constitutes the cast gate working surface of the mold under installation condition.The hardness of the gating insert is HRC50 52.The present invention can be by the gating insert that directly more renews, mold can be made to put into production again in a short period of time, improve production stability, by using the gating insert of more high rigidity, the abrasion condition that can be obviously improved at mould gate postpones the replacing construction of gating insert, and the hardness without improving die ontology, do not increase cost, also reduces crack of die risk.
Description
Technical field
The present invention relates to a kind of mould structures suitable for BMC plastic products injection moldings, can be used for the note of car light part
Modeling processing.
Background technology
BMC material is the abbreviation of Bulk molding compounds, i.e. tubular molding compound, and the country is commonly referred to as unsaturated poly-
Ester bulk the modern designs of plastics have good physical property, electrical property and mechanical property.BMC injection moulds and common thermoplasticity, thermosetting
The injection molding of property is somewhat different, and the mainly shrinking percentage of BMC is relatively low, only one thousandth.
BMC material has relatively high hardness due to containing glass ingredient, material itself.Mold into pour place due to always with production
Product rub, and wear frequent occurrence, and are re-worked after wearing with regard to that need to freeze, therefore especially influence normal production.
But if the steel hardness risk that then mold cracks for improving unitary mould obviously becomes larger again.
Invention content
The present invention is intended to provide a kind of BMC injection moldings mold, service life is long, is influenced on normal productive temp small.
The main technical schemes of the present invention have：
A kind of BMC injection moldings mold, including die ontology and gating insert, the gating insert are removably secured installation
In the groove at the cast gate of the die ontology, the exposed surface of the gating insert constitutes pouring for the mold under installation condition
Mouth working surface.
The hardness of the gating insert is preferably HRC50-52.
The hardness of the die ontology is HRC48-50.
The gating insert edge fits in the die ontology, and fit clearance is preferably controlled within 0-0.02mm.
Under molding state, the working surface complete cycle of each cast gate of the mold by the gating insert exposed surface group
It closes.
The plug installation direction of the relatively described groove of the gating insert is straight not at one with the draft direction of the mold
On line.
The beneficial effects of the invention are as follows：
Due to being arranged to the insert structure seperated with die ontology at cast gate, abrasion to a certain extent, can be at cast gate
The gating insert directly more renewed, can make mold put into production again in a short period of time, reduce mold because repairing, safeguarding
Stand-by period, improve production stability.
The hardness of injected plastics material, using the insert of more high rigidity, the mill that is on the one hand obviously improved at mould gate can be directed to
Situation is damaged, the service life of gating insert is improved, postpones the replacing construction of gating insert, is on the other hand not necessarily to improve die ontology
Hardness, do not increase cost, also reduce crack of die risk, extend the service life of mold.
Description of the drawings
Fig. 1 is the dimensional structure diagram of one embodiment of the present of invention；
Fig. 2 is the draft direction schematic diagram of embodiment illustrated in fig. 1；
Fig. 3 is the cast gate module installation direction schematic diagram of embodiment illustrated in fig. 1.
Specific implementation mode
The invention discloses a kind of BMC injection moldings molds, including die ontology and gating insert 1, and the gating insert can
It is removedly fixed in the groove at the cast gate of the die ontology, the exposed surface of the gating insert under installation condition
Constitute the cast gate working surface of the mold.
For Fig. 1 by taking dynamic model as an example, 2 in figure be moving die insert, is a part for being related to cast gate position on die ontology, can
The die ontology is represented, to illustrate the installation relation between die ontology and gating insert.When gating insert may wear to centainly
Degree can unload old gating insert, and the gating insert directly more renewed can make cast gate position extensive in a short period of time
The state of multiple design requirement, makes mold rapidly put into production again, reduce traditional moulds because the repair such as freeze, safeguard waiting when
Between, improve production stability.
It can be directed to the hardness of injected plastics material, using the insert of more high rigidity, such as gating insert described in the present embodiment
Hardness is increased to HRC50-52, is higher by the die ontology (hardness of die ontology is usually HRC48-50).It on the one hand can be bright
The aobvious abrasion condition improved at mould gate, improves the service life of gating insert, postpones the replacing construction of gating insert, another
Aspect is not necessarily to improve the hardness of die ontology, therefore does not increase cost, also reduces crack of die risk, and extend mold uses the longevity
Life.
The gating insert can be inlayed by screw with being fixed in the die ontology, and the fit clearance between the two is preferred
Control is within 0-0.02mm, to prevent flash.
The exposed surface of the gating insert wants the working surface of fully wrapped around cast gate.When the working surface of a cast gate relates to
And several component parts to die ontology, corresponding position is designed with the gating insert on the die ontology of each part,
The moulding of the exposed surface of certain each gating insert often will be different according to the position respectively installed.Molding state
Under, the working surface complete cycle of each cast gate of the mold is composed of the exposed surface of the gating insert.
Along stream flow trace direction, the exposed surface of the gating insert need not cover entire runner, usually only cover
Cast gate oral area.
No matter which kind of above-mentioned BMC injection molding mold, the plug installation direction of the relatively described groove of the gating insert and institute
It states the draft direction of mold not point-blank, can effectively avoid gating insert from deviating from mould due to the effect by knockout press
Tool.Direction shown in arrow is draft direction in Fig. 2, and direction shown in arrow is the installation of gating insert opposing mold ontology in Fig. 3
Direction.There are certain angled relationships between the two directions.
The gating insert of same position can make spare part, be convenient for changing, to improve mold repair efficiency, to carry
High efficiency.
Claims (6)
1. a kind of BMC injection moldings mold, it is characterised in that：Including die ontology and gating insert, the gating insert is detachable
Ground is fixedly mounted in the groove at the cast gate of the die ontology, and the exposed surface of the gating insert is constituted under installation condition
The cast gate working surface of the mold.
2. BMC injection moldings mold as described in claim 1, it is characterised in that：The hardness of the gating insert is HRC50-52.
3. BMC injection moldings mold as claimed in claim 2, it is characterised in that：The hardness of the die ontology is HRC48-50.
4. BMC injection moldings mold as described in claim 1, it is characterised in that：The gating insert edge fits over the mold sheet
In vivo, fit clearance is within 0-0.02mm.
5. BMC injection moldings mold as described in claim 1, it is characterised in that：Under molding state, each cast gate of the mold
Working surface complete cycle is composed of the exposed surface of the gating insert.
6. the BMC injection molding molds as described in any one of claim 1-5 claims, it is characterised in that：The cast gate
The draft direction of plug installation direction and the mold of the relatively described groove of insert is not point-blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810100572.5A CN108312438A (en) | 2018-02-01 | 2018-02-01 | BMC injection molding molds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810100572.5A CN108312438A (en) | 2018-02-01 | 2018-02-01 | BMC injection molding molds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108312438A true CN108312438A (en) | 2018-07-24 |
Family
ID=62888810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810100572.5A Pending CN108312438A (en) | 2018-02-01 | 2018-02-01 | BMC injection molding molds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108312438A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09277266A (en) * | 1996-04-11 | 1997-10-28 | Komatsu Seiki Kogyosho:Kk | Pinpoint gate bush for mold for molding plastic |
| JPH11198195A (en) * | 1998-01-20 | 1999-07-27 | Honda Motor Co Ltd | Gate cutting method for injection molding die |
| JP2000127204A (en) * | 1998-10-21 | 2000-05-09 | Cosmo Seimitsu:Kk | Injection mold |
| CN202318773U (en) * | 2011-11-23 | 2012-07-11 | 天津市柯文制模注塑有限公司 | Conical-surface type gate embedded lump sleeve template |
| CN204182885U (en) * | 2014-09-29 | 2015-03-04 | 苏州飞拓精密模具有限公司 | A kind of compression mod split sprue bush |
| CN104690905A (en) * | 2015-02-12 | 2015-06-10 | 北京世东凌云科技有限公司 | Point-type plastic filling device of injection mold |
| CN208305670U (en) * | 2018-02-01 | 2019-01-01 | 华域视觉科技(上海)有限公司 | Mold is used in BMC injection molding |
-
2018
- 2018-02-01 CN CN201810100572.5A patent/CN108312438A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09277266A (en) * | 1996-04-11 | 1997-10-28 | Komatsu Seiki Kogyosho:Kk | Pinpoint gate bush for mold for molding plastic |
| JPH11198195A (en) * | 1998-01-20 | 1999-07-27 | Honda Motor Co Ltd | Gate cutting method for injection molding die |
| JP2000127204A (en) * | 1998-10-21 | 2000-05-09 | Cosmo Seimitsu:Kk | Injection mold |
| CN202318773U (en) * | 2011-11-23 | 2012-07-11 | 天津市柯文制模注塑有限公司 | Conical-surface type gate embedded lump sleeve template |
| CN204182885U (en) * | 2014-09-29 | 2015-03-04 | 苏州飞拓精密模具有限公司 | A kind of compression mod split sprue bush |
| CN104690905A (en) * | 2015-02-12 | 2015-06-10 | 北京世东凌云科技有限公司 | Point-type plastic filling device of injection mold |
| CN208305670U (en) * | 2018-02-01 | 2019-01-01 | 华域视觉科技(上海)有限公司 | Mold is used in BMC injection molding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208305670U (en) | Mold is used in BMC injection molding | |
| CN101905498A (en) | Mould | |
| CN201419492Y (en) | Hot runner plate | |
| CN108312438A (en) | BMC injection molding molds | |
| CN212372604U (en) | Straight-top multipoint glue feeding structure of injection mold | |
| CN201792459U (en) | Valve needle sealing device of needle valve-type hot runner die | |
| CN201989308U (en) | Aluminum alloy injection mold and ejector rod protection device thereof | |
| CN207841979U (en) | Prevent the structure of BMC products overlap at mold ejection mechanism | |
| CN206140858U (en) | Electronic treadmill strake mould | |
| CN202155999U (en) | Injection mould with submarine gates | |
| CN201338371Y (en) | Dismountable injection mould | |
| CN204687262U (en) | A kind of flow distribution plate | |
| CN208484183U (en) | Water tub of washing machine mold cavity copper blocks up formula cooling water channel | |
| CN201437273U (en) | Hot runner, hot-runner mould and plug mould | |
| CN205800116U (en) | A kind of injection machine strengthening screw cylinder | |
| CN108162333A (en) | A kind of automatic Duan Jiao mechanisms of mold side gate | |
| CN207772322U (en) | Plastic cement processing mold with split type mould core structure | |
| CN202106512U (en) | Heat flow passage system easy to change colour | |
| CN202895602U (en) | Flow channel improving structure of injection mold | |
| CN202144104U (en) | Injection mould | |
| CN101456239A (en) | One-die multi-cavity emission die capable of blocking subchannel | |
| CN204955314U (en) | Injection mold | |
| CN109501142A (en) | A kind of injection molding process of abnormal workpieces | |
| CN205439088U (en) | Mould thimble cull structure is improved | |
| CN205238489U (en) | Plastic injection mold |
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 Yecheng Road, Jiading District, Jiading District, Jiading District, Shanghai Applicant before: SHANGHAI KOITO AUTOMOTIVE LAMP Co.,Ltd. |