CN205572855U - Chemistry little foaming system that moulds plastics - Google Patents
Chemistry little foaming system that moulds plastics Download PDFInfo
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- CN205572855U CN205572855U CN201620052272.0U CN201620052272U CN205572855U CN 205572855 U CN205572855 U CN 205572855U CN 201620052272 U CN201620052272 U CN 201620052272U CN 205572855 U CN205572855 U CN 205572855U
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- barrel
- core
- drive mechanism
- hydraulic cylinder
- foaming
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Abstract
The utility model provides a chemistry little foaming system that moulds plastics, including injection system, foaming device and control system, the injection system includes the feed cylinder, set up hopper on the feed cylinder, set up screw rod, the drive screw pivoted motor in the feed cylinder and be used for heating the feed cylinder in the heating system of raw materials, the injection system still includes the axial motion's of CD -ROM drive motor edge feed cylinder actuating mechanism and sets up the pressure sensor in the feed cylinder, the foaming device includes the cover half, corresponds the movable mould of cover half setting, sets up the motion core in the movable mould and drives the core actuating mechanism that the motion core moved, actuating mechanism, pressure sensor and core actuating mechanism equally divide and to link to each other with control system. It is heavy handled in order to solve in the current chemical blowing shooting technique foaming process and bubble structure, the unsatisfactory scheduling problem of foaming effect. The utility model belongs to plastics chemical blowing field.
Description
Technical field
The present invention relates to a kind of foamed system, belong to plastic chemistry foaming field.
Background technology
Foamed plastic is compared with unfoamed material, and density can reduce by 5%～95%, thus reduces raw materials consumption and cost, has the advantages such as sound isolating and heat insulating performance is good, absorb shock loading, shock-absorbing capacity is good, cheap simultaneously.Microcellular plastics has finer and close and uniform foam structure compared with common expanded material among these, cell density is higher, the combination property of resulting product is more excellent, surface quality is more preferable, contraction and the warpage of goods are lower, can be processed into thin-gage goods, therefore microcellular foam material is one of focus of recent foamed materials research field.The technique of microporous foam focuses primarily upon batch still foam, moulded from foam, physical blowing Shooting Technique and chemistry injection foaming at present.Although it is few that batch still platen press and die pressing control parameter, it is easier to control abscess-size, it is easy to analyzing the course of processing impact on structure Yu performance, but its manufacturing cycle is long, efficiency is low, is only applicable to theoretical research.The equipment of physical blowing Shooting Technique is complicated, and investment is relatively big, and manufacturing cost is high, and operating procedure is complicated, and the surface quality of resulting product is poor, and associated core technology is covered by foreign patent simultaneously.Chemical blowing Shooting Technique not only molding cycle is short, and production efficiency is high, can one-shot forming complex contour and the highest microporous foam goods of size, and equipment is simple, and operation is simple, can directly use conventional injection molding machine to produce.In chemical blowing Shooting Technique field, there is development space widely, it is thus achieved that the core technology with intellectual property is significant for the block breaking foreign technology simultaneously.But chemical blowing Shooting Technique also has a foaming process and foam structure such as is difficult to control at the problem, and the foaming effect of existing chemical blowing equipment and foaming method is not ideal enough, therefore develops a kind of new chemical blowing adapted to injection system and just seems important.
Summary of the invention
It is an object of the invention to: a kind of chemistry injection fretting map system is provided, be difficult to control to solving foaming process and foam structure in existing chemical blowing Shooting Technique, the problems such as foaming effect is undesirable.
The present invention intends using such a chemistry injection fretting map system, including injecting systems, foam device and control system, injecting systems includes barrel, the hopper being arranged on barrel, the screw rod being arranged in barrel, the motor of drive screw turns and in heating cylinder the heating system of raw material, described injecting systems also includes driving motor along the drive mechanism of the axially-movable of barrel and the pressure transducer that is arranged in barrel, described foam device includes cover half, the dynamic model that corresponding cover half is arranged, the motion core being arranged in dynamic model, drive the core drive mechanism that motion core moves and the temperature sensor being arranged in cover half or dynamic model, described drive mechanism, pressure transducer and core drive mechanism, temperature sensor is connected with control system respectively.
As a kind of preferred structure, described drive mechanism includes the guide rail axially arranged along barrel and two-way hydraulic cylinder, and motor is arranged on guide rail, and two-way hydraulic cylinder is used for driving motor to move along the rail.
Owing to the displacement of motion core is the shortest, general only several millimeters, requirement to kinematic accuracy is the highest, for improving the kinematic accuracy of motion core, described core drive mechanism includes connecting rod, eccentric, gear, tooth bar and hydraulic cylinder, hydraulic cylinder is used for driving tooth bar to move along its length, gear is arranged in the rotating shaft of eccentric, wheel and rack is meshed, on eccentric, its circumferencial direction is provided with guide-track groove, one end of connecting rod is fixed on motion core, the other end of connecting rod is provided with alignment pin, alignment pin is slideably positioned in the guide-track groove on eccentric, use this kind of structure can significantly improve the kinematic accuracy of motion core, effect is compared existing oblique rod type controlling organization and is obviously improved.
Core drive mechanism also can use following structure, this structural principle is identical with aforementioned structure, belong to a kind of deformation of aforementioned structure, described core drive mechanism includes connecting rod, bent axle, gear, tooth bar and hydraulic cylinder, hydraulic cylinder is used for driving tooth bar to move along its length, and gear is arranged on bent axle, and wheel and rack is meshed, one end of connecting rod is fixed on motion core, and the other end of connecting rod is fixed on the diameter of axle in bent axle.
Cylinder pressure is also correspondingly arranged on electronic ruler, is used for monitoring hydraulic cylinder displacement, and electronic ruler is also connected with control system.
The front end of barrel is provided with switch nozzle, and switch nozzle is connected with control system.
The foaming method of above-mentioned chemistry injection fretting map system is as follows:
Control system is by moving to the two locking to cover half, form die cavity between the motion core in cover half, dynamic model and dynamic model to adjust motion core to initial position, control dynamic model the control of core drive mechanism；
Closing switch nozzle, in barrel, the foaming raw material containing foaming agent is added by hopper, fusion plastification under heating system and screw acting, by the melt pressure between pressure sensor monitoring barrel inner screw head and switch nozzle, and make motor drive screw rod moving axially along barrel by control system control drive mechanism, melt for barrel front end provides pressure, to regulate the melt pressure in barrel, makes the melt pressure in barrel be maintained in required pressure limit；
Open switch nozzle, melt injection type intracavity in barrel, melt is made to be full of die cavity, the present invention uses the mode of full note, existing industrialization expanded material Shooting Technique all uses the mode of shorting, i.e. do not fill melt in die cavity, leave certain space, after foaming, melt can fill up die cavity automatically, short the product uniform in foaming degree obtained by mode low, second-rate, simultaneously by the melt temperature in temperature sensor monitors die cavity, then, close the switch nozzle of barrel front end to stop injecting, when the melt temperature in die cavity reaches setting value, control to move after core drive mechanism makes motion core moment by control system, now, cavity pressure moment reduces, flux foaming, finally cool down molding, prepare foamed product.On the one hand foaming is had little time due to the fast bath surface of release of pressure speed, on the other hand owing to mold surface temperature is less than melt internal temperature, the melt strength causing the melt near die surface is higher, prevent the foaming of bath surface, and then form the foamed sample of sandwich structure, it is ensured that good surface quality.Last dynamic model rearward movement, die sinking, the finished product of smooth surface, inner cell fine uniform is taken out.
After tested, use micro-foaming polypropylene T30S standard batten prepared by chemical blowing adapted to injection system of the present invention abscess is more tiny, cell density is higher compared with contrast batten prepared by early stage (using the batten prepared by the existing mold of Application No. 201320876321.9), be more evenly distributed, foam structure parameter testing result is as shown in table 1, and cell morphology is as shown in Figure 5 and Figure 6.
Table 1
The present invention is compared with prior art, major advantage is to be controlled by unified control system integrationization, the use making system is more convenient, foam space and product dimensional accuracy can be controlled, and technique is simple, low for equipment requirements, use conventional injection molding machine to carry out simple refit can produce, production efficiency is high, it is suitable for the production of standard batten and thin-gage goods, the surface quality of the Foamed article that the method prepares is substantially better than existing chemical foaming technology product, foam structure more even compact, is suitable to popularization and application.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram (barrel, cover half and dynamic model part are sectional view, lower same) of the present invention；
The main TV structure schematic diagram of present invention when Fig. 2 is foaming；
Fig. 3 is after foaming terminates, when exiting dynamic model, and the main TV structure schematic diagram of the present invention；
Fig. 4 is the main TV structure schematic diagram after using bent axle to substitute eccentric in core drive mechanism；
Fig. 5 is to use the microporous foam polyacrylic cell morphology figure prepared by foamed system of the present invention；
Fig. 6 is the cell morphology figure of the micro-foaming polypropylene prepared by existing mold using Application No. 201320876321.9；
Wherein, the product after reference 5 is foaming.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below with reference to accompanying drawings,
Embodiment:
nullWith reference to Fig. 1、Fig. 2 and Fig. 3，The present embodiment provides a kind of chemistry injection fretting map system，Foamed system includes injecting systems 1、Foam device 2(fretting map device) and control system 3，Injecting systems 1 includes barrel 11、The hopper 12 being arranged on barrel 11、The screw rod 13 being arranged in barrel 11、Drive motor 14 that screw rod 13 rotates and in the heating cylinder 11 heating system 18 of raw material，Described injecting systems 1 also includes driving motor 14 along the drive mechanism 15 of the axially-movable of barrel 11 and the pressure transducer 16 that is arranged in barrel 11，Described foam device 2 includes cover half 21、The dynamic model 22 that corresponding cover half 21 is arranged、The motion core 23 being arranged in dynamic model 22、Drive the core drive mechanism 24 that motion core 23 moves and the temperature sensor 26 being arranged in cover half 21，Hydraulic cylinder 245 is also correspondingly arranged on electronic ruler 4，And the front end of barrel 11 is provided with switch nozzle 17，Described drive mechanism 15、Pressure transducer 16、Core drive mechanism 24、Temperature sensor 26、Electronic ruler 4 is connected with control system 3 respectively with switch nozzle 17.
Drive mechanism 15 includes the guide rail 151 axially arranged along barrel 11 and two-way hydraulic cylinder 152, and motor 14 is arranged on guide rail 151, and two-way hydraulic cylinder 152 is used for driving motor 14 to move along guide rail 151.
Core drive mechanism 24 includes connecting rod 241, eccentric 242, gear 243, tooth bar 244 and hydraulic cylinder 245, hydraulic cylinder 245 is used for driving tooth bar 244 to move along its length, gear 243 is arranged in the rotating shaft of eccentric 242, gear 243 is meshed with tooth bar 244, on eccentric 242, its circumferencial direction is provided with guide-track groove 246, one end of connecting rod 241 is fixed on motion core 23, the other end of connecting rod 241 is provided with alignment pin 247, alignment pin 247 is slideably positioned in the guide-track groove 246 on eccentric 242, use this kind of structure can significantly improve the kinematic accuracy of motion core 23, effect is compared existing oblique rod type controlling organization and is obviously improved.
The foaming method of above-mentioned chemistry injection fretting map system is as follows:
Control system 3 by the control of core drive mechanism 24 to adjust motion core 23 to initial position, control dynamic model 22 to cover half 21 move to the two lock, between the motion core 23 in cover half 21, dynamic model 22 and dynamic model 22 formed die cavity 25；
Closing switch nozzle 17, in barrel 11, the foaming raw material containing foaming agent is added by hopper 12, fusion plastification under heating system 18 and screw rod 13 act on, the melt pressure between barrel 11 inner screw 13 head and switch nozzle 17 is monitored by pressure transducer 16, and control drive mechanism 15 make motor 14 drive screw rod 13 moving axially along barrel 11 by control system 3, melt for barrel 11 front end provides pressure, with the melt pressure in regulation barrel 11, the melt pressure in barrel 11 is made to be maintained in required pressure limit；
Opening switch nozzle 17, the melt in barrel 11 injects in die cavity 25, makes melt be full of die cavity 25, then, closing switch nozzle 17 is to stop injecting, when the melt temperature in die cavity 25 reaches setting value, controlling to move after core drive mechanism 24 makes motion core 23 moment by control system 3, now, in die cavity 25, pressure moment reduces, melt starts foaming, cooling molding, i.e. prepares foamed product, last dynamic model 22 rearward movement, die sinking, takes out the finished product of smooth surface, inner cell fine uniform.
Claims (6)
- null1. a chemistry injection fretting map system，Including injecting systems (1)、Foam device (2) and control system (3)，Injecting systems (1) includes barrel (11)、The hopper (12) being arranged on barrel (11)、The screw rod (13) being arranged in barrel (11)、Drive the motor (14) that screw rod (13) rotates and the heating system (18) being used for heating cylinder (11) interior raw material，It is characterized in that: described injecting systems (1) also includes driving motor (14) along the drive mechanism (15) of the axially-movable of barrel (11) and the pressure transducer (16) that is arranged in barrel (11)，Described foam device (2) includes cover half (21)、The dynamic model (22) that corresponding cover half (21) is arranged、The motion core (23) being arranged in dynamic model (22)、The core drive mechanism (24) driving motion core (23) movement and the temperature sensor (26) being arranged in cover half (21) or dynamic model (22)，Described drive mechanism (15)、Pressure transducer (16) and core drive mechanism (24)、Temperature sensor (26) is connected with control system (3) respectively.
- A kind of chemistry injection fretting map system, it is characterized in that: drive mechanism (15) includes the guide rail (151) axially arranged along barrel (11) and two-way hydraulic cylinder (152), motor (14) is arranged on guide rail (151), and two-way hydraulic cylinder (152) is used for driving motor (14) to move along guide rail (151).
- nullA kind of chemistry injection fretting map system the most according to claim 1 or claim 2，It is characterized in that: described core drive mechanism (24) includes connecting rod (241)、Eccentric (242)、Gear (243)、Tooth bar (244) and hydraulic cylinder (245)，Hydraulic cylinder (245) is used for driving tooth bar (244) to move along its length，Gear (243) is arranged in the rotating shaft of eccentric (242)，Gear (243) is meshed with tooth bar (244)，On eccentric (242), its circumferencial direction is provided with guide-track groove (246)，One end of connecting rod (241) is fixed on motion core (23)，The other end of connecting rod (241) is provided with alignment pin (247)，Alignment pin (247) is slideably positioned in the guide-track groove (246) on eccentric (242) Nei.
- A kind of chemistry injection fretting map system the most according to claim 1 or claim 2, it is characterized in that: described core drive mechanism (24) includes connecting rod (241), bent axle (248), gear (243), tooth bar (244) and hydraulic cylinder (245), hydraulic cylinder (245) is used for driving tooth bar (244) to move along its length, gear (243) is arranged on bent axle (248), gear (243) is meshed with tooth bar (244), one end of connecting rod (241) is fixed on motion core (23), the other end of connecting rod (241) is fixed on the diameter of axle (249) in bent axle (248).
- A kind of chemistry injection fretting map system, it is characterised in that: described hydraulic cylinder (245) is also correspondingly arranged on electronic ruler (4), and electronic ruler (4) is also connected with control system (3).
- A kind of chemistry injection fretting map system, it is characterised in that: the front end of described barrel (11) is provided with switch nozzle (17), and switch nozzle (17) is connected with control system (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052272.0U CN205572855U (en) | 2016-01-20 | 2016-01-20 | Chemistry little foaming system that moulds plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052272.0U CN205572855U (en) | 2016-01-20 | 2016-01-20 | Chemistry little foaming system that moulds plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205572855U true CN205572855U (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620052272.0U Withdrawn - After Issue CN205572855U (en) | 2016-01-20 | 2016-01-20 | Chemistry little foaming system that moulds plastics |
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| Country | Link |
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| CN (1) | CN205572855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500586A (en) * | 2016-01-20 | 2016-04-20 | 贵州省材料产业技术研究院 | Chemical injection molding and micro-foaming system and foaming method |
-
2016
- 2016-01-20 CN CN201620052272.0U patent/CN205572855U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500586A (en) * | 2016-01-20 | 2016-04-20 | 贵州省材料产业技术研究院 | Chemical injection molding and micro-foaming system and foaming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20171107 |
|
| AV01 | Patent right actively abandoned |