CN202727275U - Precise rubber frame mold using driving exhaust and seamless ejection system - Google Patents
Precise rubber frame mold using driving exhaust and seamless ejection system Download PDFInfo
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- CN202727275U CN202727275U CN 201220322279 CN201220322279U CN202727275U CN 202727275 U CN202727275 U CN 202727275U CN 201220322279 CN201220322279 CN 201220322279 CN 201220322279 U CN201220322279 U CN 201220322279U CN 202727275 U CN202727275 U CN 202727275U
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- glue frame
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Abstract
The utility model discloses a precise rubber frame mold using a driving exhaust and seamless ejection system. The precise rubber frame mold comprises a main mold core, the driving exhaust and seamless ejection system and a mold core insertion block arranged at the periphery of the mold core. The driving exhaust and seamless ejection system is composed of exhaust access unit and an air inlet control unit. A cavity is arranged between the main mold core and the mold core insertion block. The air inlet control unit is communicated with rubber plane fluid of the cavity through the exhaust access unit. The precise rubber frame mold using the driving exhaust and seamless ejection system can improve rubber frame production efficiency, reduces mold cost and rubber frame cost and is easy to maintain and manage and long in service life.
Description
Technical field
The utility model relates to a kind of mould, particularly a kind of injecting molding die that is used for producing LED liquid crystal display, the accurate glue frame of LED LCD TV.
Background technology
Accurate glue frame is the important plastic part of display backlight source module, need to cooperate with other precise part assembling, and precision size degree, intensity, the requirement of outward appearance tidiness are high, has not allowed to burn, the injection mo(u)ldings such as shrinkage cavity, scarce material, overlap are bad.Burn, bubble, to lack material etc. bad, often can not in time discharge because of the air of mold cavity inside, terminal at material stream, residual gas is sharply compressed under injection pressure to heat up, make the plastic cement carbonization burn sex change, gas also may remain in to form bubble in the product or hinder plastic cement and be full of whole die cavity and cause lacking material.Bad mold cavity die parting line, air discharge duct position and the thimble position of often being created in such as burr, injection pressure is excessive, the air discharge duct excesssive gap all can cause plastic cement to overflow along die cavity die parting line, air discharge duct gap and thimble gap, forms burr.
Injection molding process can reduce injection speed and avoid above-mentioned bad appearance by reducing injection pressure, and low injection pressure also can be avoided the warping deformation that glue frame product stress produces and cross that to shrink the change in size that causes overproof simultaneously.
Glue frame product is the quadrilateral frame structure, each limit is thin-wall construction, the plastic cement flow cross section is very little, but need fill up each limit die cavity of longer distance, stream is long, and relatively other type plastic product is large, therefore under very high injection pressure, be full of at a high speed die cavity, improve the bad comparatively difficulty of moulding by Shooting Technique.
At present, improvement method on the Tool and Die Technology is by offering air discharge duct at mold cavity, realization die cavity inner air is discharged fast, it is a kind of passive exhaust mode, required injection pressure is larger, it is bad that the tired gas of easy appearance causes moulding, and exhaust effect is undesirable, and tired gas position increasing exhaust clearance then can produce burr affects product appearance and prouctiveness; Usually the air discharge duct gap needs less than 0.02mm, burr then easily occurs greater than 0.02mm.Glue frame product stream is long than large, even the air discharge duct of offering spreads all over the periphery of product die cavity, also can occur because being stranded the moulding that gas causes bad, present mould can not be evaded the contradiction that exhaust is bad and the exhaust clearance burr is bad technically, increasing air discharge duct gap that can only be passive, guarantee first formed product, eliminate again afterwards the burr of air discharge duct excesssive gap generation by the method for manual processing.
In addition, present glue frame mould all adopt the thimble mode with product from mold ejection, glue frame product ejects the rear surface and has a large amount of thimble impressions, glue frame product four limits are thin-wall construction, and the design of muscle position is used on all-round limit, except the dome pin of routine, also need arranging in a large number, more unmanageable flat thimble structure guarantee muscle position ejects smoothly, not only staying a large amount of thimble impressions and step on the plastic surface affects exterior quality, and the reciprocal ejection action of thimble is inevitable and mold cavity wearing and tearing occurs and causes burr.Larger injection pressure and injection speed also can make plastic cement overflow the formation burr from the gap between thimble and the die cavity, cause glue frame product appearance bad, eliminate by manual mode and the burr at thimble position is also difficult, all make troubles to injection moulding production and mold repair management, affect prouctiveness and die life.The pressing mold accident that does not freely cause because of thimble wearing and tearing and involuntary maneuver also is frequent generation, and mold repair can be more frequent, and die life can reduce greatly.
To sum up, based on glue frame products characteristics, although quality requirements is satisfied in the combination of the method that present glue frame mould can be processed by processing behind usual technical method and the plastic substantially, plastic production efficiency is low, cost is high, and the cost of mould also high, the life-span is short, the maintenance management difficulty is large.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of can improve accurate glue frame production efficiency, reduce die cost and accurate glue frame cost, mould is easy to long application initiative exhaust of maintenance management and life-span and the accurate glue frame mould of seamless ejection system.
The technical solution of the utility model is achieved in that the accurate glue frame mould of using initiative exhaust and seamless ejection system, comprises main die, and initiative exhaust and seamless ejection system and the die that is arranged on around the described main die are inserted; Described initiative exhaust and seamless ejection system are comprised of exhaust channel unit and air inlet control module; Be die cavity between described main die and described die are inserted, described air inlet control module is by described exhaust channel unit and die cavity glue plane fluid communication.
The accurate glue frame mould of above-mentioned application initiative exhaust and seamless ejection system, described exhaust channel unit are arranged on described die inserts.
The accurate glue frame mould of above-mentioned application initiative exhaust and seamless ejection system, described air inlet control module comprises two five-way electromagnetic valves, vavuum pump and air compressors, and described vavuum pump and described air compressor are respectively by described two five-way electromagnetic valves and described exhaust channel unit fluid communication.
The accurate glue frame mould of above-mentioned application initiative exhaust and seamless ejection system, described exhaust channel unit comprises a connectivity slot and plural exhaust passages, the spacing of adjacent described exhaust passages is 10～15 millimeters, described connectivity slot respectively with each described exhaust passages fluid communication, described connectivity slot is successively by transition pore, connected pore channel and air inlet and described two five-way electromagnetic valve fluid communication.
The beneficial effects of the utility model are:
1. the mould manufacturing engineering can be saved loaded down with trivial details thimble system processing, need not process ejector retainner plate large metering-orifice position and guidance system, need not process a large amount of thimble via holes of moving platen, need not process mavable module core centre hole position, need not order thimble standard component and special-shaped thimble;
2. mould bases can save the ejector retainner plate space fully, can reduce mold thickness 20%, can reduce mold weight 10%, and die manufacturing cost reduces, and can shorten die manufacturing cycle, improves the mould competitiveness.
2. mould can be evaded fatigue wear and the contingency that the thimble action brings, and mould does not need frequent maintenance, and greatly improve die life.
3. the initiative exhaust mode can effectively reduce injection pressure, thoroughly improves burning of being stranded that gas causes, bubble, to lack the moulding such as material bad, can effectively improve the excessive warping deformation that causes of injection moulding stress and cross the change in size that contraction causes overproof.
4. cast gate quantity be can suitably reduce, die cost and injection moulding production cost further reduced.
5. can solve air discharge duct and thimble position and produce burr, reduce injection moulding and produce rear processing cost, improve the product appearance quality, increase customer satisfaction degree.
The utility model has overcome the deficiency of present accurate glue frame mould, a kind of precision die of having used initiative exhaust and seamless ejection system is provided, can obviously improve the exhaust effect of mould, effectively reduce injection pressure, can avoid again the excessive burr that causes of exhaust clearance, and access structure that can shared ventilation system is realized seamless ejecting simultaneously, the inherent shortcoming of fundamentally evading traditional thimble mode, shaped article will be less than in the past a large amount of thimble impressions and thimble gap burr, the engineering that processing is processed after not only saving can improve die life again.
Description of drawings
Fig. 1 is that the mavable module core of the accurate glue frame mould of the utility model application initiative exhaust and seamless ejection system splits structural representation;
Fig. 2 is the initiative exhaust of the utility model accurate glue frame mould of using initiative exhaust and seamless ejection system and the structural representation of seamless ejection system;
Fig. 3 is the initiative exhaust of the utility model shown in Figure 2 accurate glue frame mould of using initiative exhaust and seamless ejection system and the A section structure for amplifying schematic diagram of seamless ejection system.
Among the figure: 1-master's die, two five-way electromagnetic valves of 2-, 3-vavuum pump, the 4-air compressor, 5-connectivity slot, 6-transition pore, the 7-connected pore channel, 8-the first die is inserted, and 9-the second die is inserted, 10-the 3rd die is inserted, and 11-the 4th die is inserted, the 12-air inlet, the 13-clearance groove, 14-lead-over groove, 15-air discharge duct, the accurate glue frame of 16-, the 17-die is inserted.
The specific embodiment
By reference to the accompanying drawings the utility model is described further:
As shown in Figure 1 to Figure 3, the present embodiment is used the accurate glue frame mould of initiative exhaust and seamless ejection system, comprises main die 1, and initiative exhaust and seamless ejection system and the die that is arranged on around the described main die 1 are inserted; Described initiative exhaust and seamless ejection system are comprised of exhaust channel unit and air inlet control module; Be die cavity between described main die 1 and described die are inserted, described air inlet control module is by described exhaust channel unit and die cavity glue plane fluid communication.Described die is inserted and is comprised that the first die the 8, second die the 9, the 3rd die the 10 and the 4th die of inserting of inserting of inserting inserts 11, lay respectively at described main die 1 around.Described exhaust channel unit is arranged on described die inserts in the present embodiment.Described air inlet control module comprises two five-way electromagnetic valves 2, vavuum pump 3 and air compressor 4, and described vavuum pump 3 and described air compressor 4 are respectively by described two five-way electromagnetic valves 2 and described exhaust channel unit fluid communication.Described exhaust channel unit comprises a connectivity slot 5 and plural exhaust passages, the spacing of adjacent described exhaust passages is 10～15 millimeters, described connectivity slot 5 respectively with each described exhaust passages fluid communication, described connectivity slot 5 is successively by transition pore 6, connected pore channel 7 and air inlet 12 and described two five-way electromagnetic valve 2 fluid communication.
As shown in Figure 3, described exhaust passages begins to be divided into clearance groove 13 from the lowest surfaces of die cavity glue plane, 15 3 sections of lead-over groove 14 and air discharge ducts, clearance groove 13 dark 0.02mm, extend long 1～2mm, lead-over groove 14 is transitioned into dark 1.5mm with 15 degree inclined-planes from dark 0.02mm, air discharge duct 15 dark 1.5mm, extend long 25～30mm, air discharge duct 15 bottoms extend to the wide connectivity slot of 8～10mm 5, connectivity slot 5 is communicated with each exhaust passages, some transition pores 6 are set on the connectivity slot 5, and extend to outside the mould mould bases by insert inner connected pore channel 7 and the inner duct that arranges of mould bases of die, four limits are extended the outer gas port of mould bases and are connected by the gas circuit pipe fitting, keep at last the open air inlet 12 in a place and are connected with the air inlet control module;
The air valve P termination air compressor 4 of two five-way electromagnetic valves 2 in the present embodiment, inflation when 3, two five-way electromagnetic valves of exhaust end T2 termination vavuum pump 2 that are communicated with air valve B end are switched on, vavuum pump 3 vacuumizes during outage.Described two five-way electromagnetic valves 2 are connected with the injection machine holding wire, send described two five-way electromagnetic valve 2 power on/off of signal controlling by injection machine.Behind the mould matched moulds, described two five-way electromagnetic valves 2 receive the injection moulding signal, and described two five-way electromagnetic valves 2 are communicated with vavuum pump 3 bleeds, and the mold cavity inner air is finished initiative exhaust by instantaneous extraction, and plastic cement is injected in the vacuum die cavity by cast gate and finishes mould filling.Plastic cement is mould die sinking behind the cooling forming in die cavity, and die cavity is opened, and described two five-way electromagnetic valves 2 are communicated with air compressor 4 release gases at high pressure and by exhaust channel unit to die cavity accurate glue frame are ejected, and finish ejecting action.
The injection pressure that the utility model is used the astute glue frame mould of initiative exhaust and seamless ejection system can reduce by 15%～30%, die cavity inside is near vacuum when filling because of plastic cement, gas is initiatively extracted out, can not occur that the bad tired conductance of exhaust causes burn, bubble, to lack the moulding such as material bad, exhaust clearance can be controlled at below the 0.02mm, and plastic cement can not overflow exhaust clearance and form burr.Plastic ejects action and has substituted traditional thimble mode by gases at high pressure and finish, accurate glue frame table face can residual thimble impression, and fundamentally eliminated the hidden danger that a large amount of thimbles position gap location produces burr, do not need that plastic is carried out rear processing and process, die can not wear and tear with thimble, has avoided frequently mold repair, obviously improve die life, mould can be saved the cost of raw material 10%, and the manufacturing engineering amount can reduce 10%～15%, has shortened delivery date.
Above-described embodiment only is for the invention example clearly is described, and is not the restriction to the invention specific embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the invention claim.
Claims (4)
1. use the accurate glue frame mould of initiative exhaust and seamless ejection system, it is characterized in that, comprise main die (1), initiative exhaust and seamless ejection system and be arranged on described main die (1) die all around and insert; Described initiative exhaust and seamless ejection system are comprised of exhaust channel unit and air inlet control module; Be die cavity between described main die (1) and described die are inserted, described air inlet control module is by described exhaust channel unit and die cavity glue plane fluid communication.
2. the accurate glue frame mould of application initiative exhaust according to claim 1 and seamless ejection system is characterized in that, described exhaust channel unit is arranged on described die inserts.
3. the accurate glue frame mould of application initiative exhaust according to claim 2 and seamless ejection system, it is characterized in that, described air inlet control module comprises two five-way electromagnetic valves (2), vavuum pump (3) and air compressor (4), and described vavuum pump (3) and described air compressor (4) are respectively by described two five-way electromagnetic valves (2) and described exhaust channel unit fluid communication.
4. the accurate glue frame mould of application initiative exhaust according to claim 3 and seamless ejection system, it is characterized in that, described exhaust channel unit comprises a connectivity slot (5) and plural exhaust passages, the spacing of adjacent described exhaust passages is 10～15 millimeters, described connectivity slot (5) respectively with each described exhaust passages fluid communication, described connectivity slot (5) is successively by transition pore (6), connected pore channel (7) and air inlet (12) and described two five-way electromagnetic valves (2) fluid communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322279 CN202727275U (en) | 2012-07-05 | 2012-07-05 | Precise rubber frame mold using driving exhaust and seamless ejection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322279 CN202727275U (en) | 2012-07-05 | 2012-07-05 | Precise rubber frame mold using driving exhaust and seamless ejection system |
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| CN202727275U true CN202727275U (en) | 2013-02-13 |
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| CN 201220322279 Expired - Fee Related CN202727275U (en) | 2012-07-05 | 2012-07-05 | Precise rubber frame mold using driving exhaust and seamless ejection system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302813A (en) * | 2013-06-20 | 2013-09-18 | 钟灿秋 | Negative pressure injection molding mold of plastic product and method thereof |
| CN104960167A (en) * | 2015-05-27 | 2015-10-07 | 昆山—邦泰汽车零部件制造有限公司 | Vacuum injection molding die |
| CN105081271A (en) * | 2015-09-17 | 2015-11-25 | 菲斯达精密工业部件（苏州）有限公司 | Die-casting die capable of automatically cleaning insert holes and method for automatically cleaning inert holes |
| CN107738425A (en) * | 2017-11-02 | 2018-02-27 | 广东泰安模塑科技股份有限公司 | A kind of control method for being molded forming machine mould and being evacuated control system of supplying gas |
| CN108481318A (en) * | 2018-03-07 | 2018-09-04 | 河南工业大学 | Based on the variation rigidity drive rod and its work system that bulk solid obstruction is theoretical |
| CN109159384A (en) * | 2018-09-20 | 2019-01-08 | 深圳市捷讯实业发展有限公司 | Accurate automobile grills mold weldless trace injection structure |
-
2012
- 2012-07-05 CN CN 201220322279 patent/CN202727275U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302813A (en) * | 2013-06-20 | 2013-09-18 | 钟灿秋 | Negative pressure injection molding mold of plastic product and method thereof |
| CN103302813B (en) * | 2013-06-20 | 2016-03-09 | 东莞市积健生物科技有限公司 | Plastic cement products negative pressure injection forming mold and method thereof |
| CN104960167A (en) * | 2015-05-27 | 2015-10-07 | 昆山—邦泰汽车零部件制造有限公司 | Vacuum injection molding die |
| CN105081271A (en) * | 2015-09-17 | 2015-11-25 | 菲斯达精密工业部件（苏州）有限公司 | Die-casting die capable of automatically cleaning insert holes and method for automatically cleaning inert holes |
| CN105081271B (en) * | 2015-09-17 | 2017-03-29 | 菲斯达精密工业部件（苏州）有限公司 | A kind of cleaning mold insert pore pressure casting mould and method automatically |
| CN107738425A (en) * | 2017-11-02 | 2018-02-27 | 广东泰安模塑科技股份有限公司 | A kind of control method for being molded forming machine mould and being evacuated control system of supplying gas |
| CN108481318A (en) * | 2018-03-07 | 2018-09-04 | 河南工业大学 | Based on the variation rigidity drive rod and its work system that bulk solid obstruction is theoretical |
| CN108481318B (en) * | 2018-03-07 | 2021-07-06 | 河南工业大学 | Variable-rigidity driving rod based on granular body blocking theory and working system thereof |
| CN109159384A (en) * | 2018-09-20 | 2019-01-08 | 深圳市捷讯实业发展有限公司 | Accurate automobile grills mold weldless trace injection structure |
| CN109159384B (en) * | 2018-09-20 | 2023-06-13 | 深圳市捷讯实业发展有限公司 | No weld mark injection structure of accurate car grid mould |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20140705 |
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| EXPY | Termination of patent right or utility model |