CN106079308B - The die cavity vacuum device of BMC injecting products - Google Patents
The die cavity vacuum device of BMC injecting products Download PDFInfo
- Publication number
- CN106079308B CN106079308B CN201610654812.7A CN201610654812A CN106079308B CN 106079308 B CN106079308 B CN 106079308B CN 201610654812 A CN201610654812 A CN 201610654812A CN 106079308 B CN106079308 B CN 106079308B
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- Prior art keywords
- hole
- mandril
- backing plate
- die cavity
- vertically arranged
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Classifications
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of die cavity vacuum device of BMC injecting products, including：The upper cores of horizontal, with mode under the horizontal of upper cores cooperation, upper cores are closed formed die cavity with lower mode, for the horizontal backing plate of fixed lower mode, for fixing the horizontal fixed plate of backing plate, be bumped into lower mode is vertically arranged mold insert and for being vertically arranged mandril by what product ejected upwards in die sinking.The die cavity vacuum device of BMC injecting products of the present invention, it is rational in infrastructure, the gas in die cavity can be discharged in injection.
Description
Technical field
The present invention relates to the die cavity vacuum devices of BMC injecting products.
Background technology
BMC is the acronym of English Bulk Molding Compound, and Chinese is tubular molding compound.BMC is one
The molding intermediate materials of kind semidry method manufacture glass-fiber reinforced thermo-setting product, by unsaturated polyester resin, lower shrinkage/low wheel
Wide additive, initiator, inner pattern releasing agent applicable, mineral filler etc. are not pre-mixed into paste, add thickener, colorant etc., and not
It with the glass fibre of length, is stirred in dedicated material kettle, carries out thickening, ultimately form the intermediate material of bulk
Material, available for being molded and be molded.
The die cavity of BMC injecting products vacuumizes in existing process, is the outside that air tube is placed on to die cavity, and air tube passes through exhaust
Gap is connected with die cavity, is so had several drawbacks in that：It 1. exhaust clearance is too small, is not thorough when vacuumizing, there is residual；2. between exhaust
The bad control of size of gap, when gap is excessive, product has flash generation.
The content of the invention
It is rational in infrastructure it is an object of the invention to provide a kind of die cavity vacuum device of BMC injecting products, it can note
The gas in die cavity is discharged during modeling.
To achieve the above object, the technical scheme is that designing a kind of die cavity vacuum device of BMC injecting products,
Including：
The upper cores of horizontal,
Mode under the horizontal coordinated with upper cores,
Upper cores are closed formed die cavity with lower mode,
For fixing the horizontal backing plate of lower mode,
For fixing the horizontal fixed plate of backing plate,
Be bumped into lower mode is vertically arranged mold insert,
And for being vertically arranged mandril by what product ejected upwards in die sinking；
The backing plate lies in fixed plate top surface, and backing plate bottom surface tightens together with fixed plate top surface；
The lower mode lies in backing plate top surface, and lower mode bottom surface tightens together with backing plate top surface；
The lower mode is equipped with to install the first through hole that is vertically arranged of mold insert, and mold insert is installed in first through hole, and mold insert
With first through hole tight fit；
The mold insert is equipped with is vertically arranged the second through hole for mandril is vertically perforative, and the top end opening of the second through hole is passed through with die cavity
It is logical；
The backing plate is equipped with is vertically arranged third through-hole, and the third through-hole heart coaxial with the second through hole for mandril is vertically perforative；
The fixed plate is equipped with is vertically arranged fourth hole for mandril is vertically perforative, and fourth hole is coaxial with third through-hole
The heart；
Successively vertically through above-mentioned fourth hole, third through-hole and the second through hole, mandril is total to the mandril with the second through hole
Axle center is equipped with exhaust clearance, also is provided with being vented between mandril periphery and third through-hole inner wall between mandril periphery and the second through-hole wall
Gap, and mandril and fourth hole clearance fit；
The backing plate is internally provided with the exhaust passage with the perforation of above-mentioned third through-hole, and backing plate sidewall is equipped with and is passed through with exhaust passage
The logical, exhaust joint for connecting exterior line, exhaust joint are connected by exhaust passage with third through-hole.
Preferably, the mandril periphery is set with two sealing rings setting up and down, and two sealing rings are coaxial with mandril
The heart, and two sealing rings are divided into the upper and lower ends of third through-hole.
Preferably, the aperture of second through hole is identical with the aperture of third through-hole.
Preferably, the exhaust passage is vertical with third through-hole.
The advantages of the present invention are：A kind of die cavity vacuum device of BMC injecting products, structure are provided
Rationally, the gas in die cavity can be discharged in injection.
The present invention increases a mold insert at the position that die cavity needs are vented, and the second through hole, the second through hole are processed inside mold insert
Interior placement mandril, this second through hole is interior plus mandril is except playing an important role of exhaust, it may have the ejecting function of product, injecting products
When, mould intracavity gas can pass sequentially through the second through hole, third through-hole, exhaust passage with injection pressure and flow out, and reach removal vacuum
Effect, injection complete after, the defective material in the second through hole can automatically drop with mandril.
The present invention also has following features：
1st, due to the particularity of BMC injected plastics materials, mold need to design exhaust, and exhaust clearance can generate defective material in injection, pass
The design of system needs to increase more 1 people in production spends 10 second time removal defective materials, can generate 5% and scrap.The structure of the present invention
Design can cancel artificial removal's defective material this process and produce automatically, every time production can with the cost of labor of 1 people of direct saving,
Improve 5% yields.
2nd, traditional structure design is due to the particularity of BMC injected plastics materials, and mold is easy to wear in production, and every month needs lower die
Repair.The structure of the present invention can reduce the probability of damage, and highly stable, can be with continuous production 12 months or more.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is further described.Following embodiment is only
For clearly illustrating technical scheme, and it is not intended to limit the protection scope of the present invention and limits the scope of the invention.
The technical solution that the present invention is embodied is：
As shown in Figure 1, a kind of die cavity vacuum device of BMC injecting products, including：
The upper cores 1 of horizontal,
Mode 2 under the horizontal coordinated with upper cores 1,
Upper cores 1 are closed formed die cavity with lower mode 2,
For fixing the horizontal backing plate 3 of lower mode 2,
For fixing the horizontal fixed plate 4 of backing plate 3,
Be bumped into lower mode 2 is vertically arranged mold insert 5,
And for being vertically arranged mandril 6 by what product 12 ejected upwards in die sinking；
The backing plate 3 lies in 4 top surface of fixed plate, and 3 bottom surface of backing plate tightens together with 4 top surface of fixed plate；
The lower mode 2 lies in 3 top surface of backing plate, and 2 bottom surface of lower mode tightens together with 3 top surface of backing plate；
The lower mode 2 is equipped with to install the first through hole that is vertically arranged of mold insert 5, and mold insert 5 is installed in first through hole, and is inlayed
Part 5 and first through hole tight fit；
The mold insert 5 is equipped with is vertically arranged the second through hole, and the top end opening and die cavity of the second through hole for mandril 6 is vertically perforative
Perforation；
The backing plate 3 is equipped with is vertically arranged third through-hole for mandril 6 is vertically perforative, and third through-hole is coaxial with the second through hole
The heart；
The fixed plate 4 is equipped with is vertically arranged fourth hole for mandril 6 is vertically perforative, and fourth hole is coaxial with third through-hole
The heart；
The mandril 6 is successively vertically through above-mentioned fourth hole, third through-hole and the second through hole, 6 and second through hole of mandril
The coaxial heart is equipped with exhaust clearance 7, also is provided between 6 periphery of mandril and third through-hole inner wall between 6 periphery of mandril and the second through-hole wall
Exhaust clearance 8, and mandril 6 and fourth hole clearance fit；
The backing plate 3 is internally provided with the exhaust passage 9 with the perforation of above-mentioned third through-hole, and 3 side wall of backing plate is equipped with to be led to being vented
Road 9 penetrates through, the exhaust joint 10 for connecting exterior line, and exhaust joint 10 is connected by exhaust passage 9 with third through-hole.
6 periphery of mandril is set with two sealing rings 11 setting up and down, and two sealing rings 11 are coaxial with mandril 6
The heart, and two sealing rings 11 are divided into the upper and lower ends of third through-hole.
The aperture of second through hole is identical with the aperture of third through-hole.
The exhaust passage 9 is vertical with third through-hole.
The present invention increases a mold insert 5 at the position that die cavity needs are vented, and 5 the second through hole of inside processing of mold insert, second is logical
Mandril 6 is placed in hole, adds mandril 6 except playing an important role of exhaust in this second through hole, it may have the ejecting function of product 12, note
During molding product, mould intracavity gas can pass sequentially through the second through hole, third through-hole, exhaust passage 9 with injection pressure and flow out, and reach
Except the effect of vacuum, after injection is completed, the defective material in the second through hole can automatically drop with mandril 6.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (1)
- The die cavity vacuum device of 1.BMC injecting products, which is characterized in that including：The upper cores of horizontal,Mode under the horizontal coordinated with upper cores,Upper cores are closed formed die cavity with lower mode,For fixing the horizontal backing plate of lower mode,For fixing the horizontal fixed plate of backing plate,Be bumped into lower mode is vertically arranged mold insert,And for being vertically arranged mandril by what product ejected upwards in die sinking；The backing plate lies in fixed plate top surface, and backing plate bottom surface tightens together with fixed plate top surface；The lower mode lies in backing plate top surface, and lower mode bottom surface tightens together with backing plate top surface；The lower mode is equipped with to install the first through hole that is vertically arranged of mold insert, and mold insert is installed in first through hole, and mold insert and the One through hole tight fit；The mold insert is equipped with is vertically arranged the second through hole for mandril is vertically perforative, and the top end opening of the second through hole is penetrated through with die cavity；The backing plate is equipped with is vertically arranged third through-hole, and the third through-hole heart coaxial with the second through hole for mandril is vertically perforative；The fixed plate is equipped with is vertically arranged fourth hole, and the fourth hole heart coaxial with third through-hole for mandril is vertically perforative；The mandril is successively vertically through above-mentioned fourth hole, third through-hole and the second through hole, the mandril heart coaxial with the second through hole, Exhaust clearance is equipped between mandril periphery and the second through-hole wall, exhaust clearance also is provided between mandril periphery and third through-hole inner wall, And mandril and fourth hole clearance fit；The backing plate be internally provided with above-mentioned third through-hole perforation exhaust passage, backing plate sidewall be equipped with exhaust passage perforation, For connecting the exhaust joint of exterior line, exhaust joint is connected by exhaust passage with third through-hole；The mandril periphery is set with two sealing rings setting up and down, two sealing rings heart coaxial with mandril, and this two Sealing ring is divided into the upper and lower ends of third through-hole；The aperture of second through hole is identical with the aperture of third through-hole；The exhaust passage is vertical with third through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654812.7A CN106079308B (en) | 2016-08-11 | 2016-08-11 | The die cavity vacuum device of BMC injecting products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654812.7A CN106079308B (en) | 2016-08-11 | 2016-08-11 | The die cavity vacuum device of BMC injecting products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106079308A CN106079308A (en) | 2016-11-09 |
| CN106079308B true CN106079308B (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610654812.7A Active CN106079308B (en) | 2016-08-11 | 2016-08-11 | The die cavity vacuum device of BMC injecting products |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873839A (en) * | 2012-09-21 | 2013-01-16 | 东泰精密模具(苏州)有限公司 | Mould with air exhausting system |
| CN202702604U (en) * | 2012-05-14 | 2013-01-30 | 江苏星科精密模具有限公司 | Vacuum pumping bulk molding compound (BMC) mould |
| CN202878614U (en) * | 2012-08-24 | 2013-04-17 | 昆山晨州塑胶有限公司 | Precise injection molding mold capable of vacuumizing in mold |
| CN202985994U (en) * | 2013-01-14 | 2013-06-12 | 慈溪市盛艺模具有限公司 | Injection mold of vacuum thin-wall type automobile parts |
| CN204183833U (en) * | 2014-09-09 | 2015-03-04 | 创意塑胶工业（苏州）有限公司 | With the injection mold of Vacuuming structure |
| CN204183832U (en) * | 2014-09-09 | 2015-03-04 | 创意塑胶工业（苏州）有限公司 | There is the injection mold of degassing function |
| CN204249260U (en) * | 2014-11-15 | 2015-04-08 | 江苏星科精密模具有限公司 | With the BMC reflector mould of vacuum device |
| CN205951197U (en) * | 2016-08-11 | 2017-02-15 | 创意塑胶工业（苏州）有限公司 | BMC injection moulding product's die cavity evacuation mechanism |
-
2016
- 2016-08-11 CN CN201610654812.7A patent/CN106079308B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202702604U (en) * | 2012-05-14 | 2013-01-30 | 江苏星科精密模具有限公司 | Vacuum pumping bulk molding compound (BMC) mould |
| CN202878614U (en) * | 2012-08-24 | 2013-04-17 | 昆山晨州塑胶有限公司 | Precise injection molding mold capable of vacuumizing in mold |
| CN102873839A (en) * | 2012-09-21 | 2013-01-16 | 东泰精密模具(苏州)有限公司 | Mould with air exhausting system |
| CN202985994U (en) * | 2013-01-14 | 2013-06-12 | 慈溪市盛艺模具有限公司 | Injection mold of vacuum thin-wall type automobile parts |
| CN204183833U (en) * | 2014-09-09 | 2015-03-04 | 创意塑胶工业（苏州）有限公司 | With the injection mold of Vacuuming structure |
| CN204183832U (en) * | 2014-09-09 | 2015-03-04 | 创意塑胶工业（苏州）有限公司 | There is the injection mold of degassing function |
| CN204249260U (en) * | 2014-11-15 | 2015-04-08 | 江苏星科精密模具有限公司 | With the BMC reflector mould of vacuum device |
| CN205951197U (en) * | 2016-08-11 | 2017-02-15 | 创意塑胶工业（苏州）有限公司 | BMC injection moulding product's die cavity evacuation mechanism |
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| Publication number | Publication date |
|---|---|
| CN106079308A (en) | 2016-11-09 |
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