CN106273196A - The extrusion foaming system of intermittent duty can be controlled - Google Patents
The extrusion foaming system of intermittent duty can be controlled Download PDFInfo
- Publication number
- CN106273196A CN106273196A CN201610852479.0A CN201610852479A CN106273196A CN 106273196 A CN106273196 A CN 106273196A CN 201610852479 A CN201610852479 A CN 201610852479A CN 106273196 A CN106273196 A CN 106273196A
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- China
- Prior art keywords
- expected
- chamber
- extruder
- mould
- extrusion foaming
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
The invention discloses the extrusion foaming system that can control intermittent duty, including extruder, the chamber to be expected of constant temperature and the mould of cavity rear end to be expected, being provided with control valve between chamber to be expected and mould, extruder output molten material enters in the chamber to be expected of constant temperature；Control valve is closed, when the pressure expecting intracavity reaches higher limit；Extruder quits work, the molten material in chamber to be expected is made to be in constant pressure and constant temperature state, open control valve, the molten material of intracavity to be expected relies on and is discharged in mould from pressure, advantage is to reach the purpose to mould internal clearance feed by intermittence ground open and close control valve and extruder, reduces the waste of useless extrusion；Chamber to be expected and controller the switching time that can make full use of between mould is set, improve the operational efficiency of extruder.
Description
Technical field
The present invention relates to a kind of extrusion foaming equipment, especially relate to a kind of extrusion foaming system controlling intermittent duty
System.
Background technology
Extruder is a kind of general device of plastic processing, and screw extruder is dependent on screw rod and rotates the pressure produced and cut
Shear force, can make material fully to carry out plastifying and uniformly mixing, by mouth die molding.Traditional extruder can only be carried out
Continuously extruded, it is mainly used to the strip profiled member etc. of production rule, then the end cutting tool of extruder is by strip profiled member
Block.When producing the special-shaped foam package material that volume is bigger, need to use mould, owing between mould, switching needs
Wanting separated in time, within this spacer segment time, the extruded stock of extruder will slattern.The most traditional extruder also without
Method processes for the foam process of material.Therefore be highly desirable to develop a kind of extrusion foaming system controlling to run in gap and
Extrusion foaming method.
Summary of the invention
The technical problem to be solved is to provide a kind of extrusion foaming system controlling intermittent duty, this system
In the mould that the extruded stock of extruder is injected under high-temperature and high-pressure conditions interval switching, to adapt to mould
The pause of interval switching, it is to avoid extrude the material loss brought continuously because of conventional extruder；Intracavity high temperature to be expected is high
The molten material abrupt release of pressure is in mould, to complete foam process.
The present invention solves the technical scheme that above-mentioned technical problem used: can control the extrusion foaming system of intermittent duty
System, including extruder, the chamber to be expected of constant temperature and the mould of cavity rear end to be expected, is provided with control between chamber to be expected and mould
Valve processed, extruder output molten material enters in the chamber to be expected of constant temperature；Control valve is closed, and the pressure of intracavity to be expected reaches
During limit value；Extruder quits work, and makes the molten material in chamber to be expected be in constant pressure and constant temperature state, opens control valve, wait to expect
The molten material of intracavity relies on and is discharged in mould from pressure.
The further preferred version of the present invention is: when being less than lower limit wait the pressure expecting chamber, open extruder.
The further preferred version of the present invention is: be provided with feeder channel between described chamber to be expected and mould, control
Valve processed is arranged on described feeder channel.
The further preferred version of the present invention is: be provided with, on described chamber to be expected, the pressure sensing being connected with controller
Device, described extruder is controlled by the controller, and when the force value expecting chamber exceedes the higher limit that controller sets, controller instructs
Extruder quits work；When, in time expecting the lower limit that the force value in chamber sets less than controller, controller instruction extruder is opened.
The further preferred version of the present invention is: be provided with attemperating unit on described chamber to be expected, described attemperating unit includes treating
The heating wire heated in material chamber and the cooling water circulation pipeline treating the cooling of material chamber.
The further preferred version of the present invention is: described extruder includes extrusion screw rod, gear-box, reductor and electronic
Machine, is provided with clutch, the described clutch described in controller control between gear-box and reductor.
The further preferred version of the present invention is: described control valve is controlled by described controller.
The further preferred version of the present invention is: described extruder is connected with described feeder channel by end cap, institute
The chamber to be expected stated is positioned at described end cap, and described attemperating unit is arranged on described end cap.
The further preferred version of the present invention is: described end cap and feeder channel all use diminishing reducing to tie
Structure.
The further preferred version of the present invention is: described shaping mould has multiple, can be mutual between multiple moulds
Switching, feeder channel can intermittence dock successively with each mould.
Compared with prior art, it is an advantage of the invention that and first open extruder, extruder output molten material enters into
In the chamber to be expected of constant temperature, the follow-up output of material being cut off by control valve, therefore the material of extruder extrusion accumulates in chamber to be expected
In, when the pressure of intracavity to be expected reaches a higher limit, close down extruder, make the molten material in chamber to be expected be in constant pressure and constant
Temperature state, then opens control valve, and the molten material of intracavity to be expected relies on and is discharged in mould from pressure, intracavity to be expected
The molten material abrupt release of High Temperature High Pressure is in mould, to complete foam process.The present invention is opened by intermittence
Close control valve and extruder reaches the purpose to mould internal clearance feed, reduce the waste of useless extrusion；Chamber to be expected and
Controller the switching time that can make full use of between mould is set, improve the operational efficiency of extruder.
Accompanying drawing explanation
Fig. 1 is the axonometric chart that the present invention can control the extrusion foaming system of intermittent duty；
Fig. 2 is the extrusion foaming system charging gear detonation configuration figure that the present invention can control intermittent duty；
Fig. 3 is the extrusion foaming system charging gear assembling figure that the present invention can control intermittent duty；
Fig. 4 is the extrusion foaming system charging gear sectional view that the present invention can control intermittent duty.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As it is shown in figure 1, the extrusion foaming system of intermittent duty can be controlled, this extrusion foaming system, can generate the most different
Shape foamed materials, or starch based expanded material etc., it is used for making packaging material.Including extruder 1, chamber to be expected 2 and of constant temperature
The mould 3 of rear end, chamber 2 to be expected, is provided with control valve 4 between chamber 2 to be expected and mould 3, extruder 1 exports molten
Material enters in the chamber to be expected 2 of constant temperature；Control valve 4 is closed, when the pressure expected in chamber 2 reaches higher limit；Upper such as pressure
Limit value is 11 MPas, and extruder 1 quits work, and makes the molten material in chamber 2 to be expected be in constant pressure and constant temperature state, opens control
Valve 4, the molten material in chamber 2 to be expected relies on and is discharged in mould 3 from pressure.When in chamber 2 to be expected molten material by
The fewest, the pressure in chamber 2 to be expected also is gradually reduced, when when the pressure expected in chamber 2 is less than lower limit, such as the lower limit of pressure
Be 9.5 MPas, open extruder 1, treat this mould 3 already filled with completing, closing control valve 4；Changing next molding
While mould 3, the molten material in chamber 2 to be expected accumulates again, prepares for being injected into mould 3 next time.Control herein
Device processed can be with analog controller, it is also possible to digitial controller is controlled, and can use commercially available product or use ripe electricity
Road controls technology, to ensure the reliability service of equipment.
As it is shown in figure 1, be provided with feeder channel 5 between chamber 2 to be expected and mould 3, control valve 4 is arranged on feeder channel
On 5.Molten material in chamber 2 to be expected enters in mould 3 by feeder channel 5, and control valve 4 can close feeder channel
5, so that molten material accumulates in chamber 2 to be expected.
As it is shown in figure 1, be provided with the pressure transducer 61 being connected with controller 6 on chamber 2 to be expected, the controlled device of extruder 6
Controlling, when the force value expecting chamber 2 exceedes the higher limit that controller 6 sets, controller 6 instructs extruder 1 and quits work；When treating
During the lower limit that the force value in material chamber 2 sets less than controller 6, controller 6 instructs extruder 1 and opens.Controller 6 can be mould
Intend controller 6 or digitized controller 6, upper limit of pressure value and lower limit can be set by program, treat in material chamber 2
Force value sample, and automatically control the opening and closing of extruder 1.The controlled device of control valve 46 controls, control
Valve 4 processed can be by electrically and carrying out drive control valve 4 by the way of hydraulic pressure, and this control valve 4 is guiding valve 4, bore 41 on guiding valve 4 and
Bore 51 within feeder channel 5 is to time upper, and control valve 4 is in open mode, and feeder channel 5 is unimpeded, when 4 feeds of guiding valve lead to
When road 5 is blocked, control valve 4 is closed, and now feeder channel 5 is truncated.
As shown in Figure 1-Figure 3, chamber 2 to be expected being provided with attemperating unit 7, attemperating unit 7 includes treating the electricity heated in material chamber 2
Heated filament 71 and the cooling water circulation pipeline 72 treating the cooling of material chamber 2.Heating wire 71 is treated material chamber 2 and is heated, and makes in chamber 2 to be expected
Material be in molten condition, when temperature is too high, by cooling water circulation pipeline 72 treat material chamber 72 lower the temperature, electric heating
Silk 71 and cooling water circulation pipeline 72 jointly act on and make the material of the molten in chamber 2 to be expected be in constant temperature and pressure, and material is not
Can solidify in chamber 2 to be expected, when opening for control valve 4, logistics is discharged in mould 3 ready under pressure.
The temperature in chamber 2 to be expected controls between 120-130 degree.
As it is shown in figure 1, extruder 1 includes extruding barrel 11, extrusion screw rod 12, gear-box 13, reductor 14 and motor
15, extruding barrel is provided with charging aperture 111, between gear-box 13 and reductor 14, is provided with clutch 16, controller 6 controls
Clutch 16.Motor 15 is connected with reductor 14, and reductor 14 is connected with gear-box 13 with by clutch 16, gear-box 13
Being connected with extrusion screw rod 12, when clutch 16 makes reductor 14 disengage with gear-box 13, motor 15 cannot drive extrusion spiral shell
Bar 12 rotates, and extruder 1 quits work；When clutch 16 makes reductor 14 be connected with gear-box 13, motor 15 drives and squeezes
Going out screw rod 12 to rotate, now extruder 1 starts.
As Figure 1-Figure 4, extruder 1 is connected with feeder channel 5 by end cap 8, and chamber 2 to be expected is positioned at end cap 8, temperature control
Device 7 is arranged on end cap 8.
As shown in figs 2-4, end cap 8 and feeder channel 5 all use diminishing variable-diameter structure.End cap 8 one aspect rises
Arrive and be connected fixation, on the other hand providing chamber 2 to be expected, heating wire 71 and cooling water circulation pipeline 72 to be installed at end cap 8
On, diminishing variable-diameter structure can make the pressure of fused materials increase, and after it discharges, can form the material of foaming shape.
As it is shown in figure 1, multiple moulds 3 may be installed on rotating disk, can mutually switch between multiple moulds 3, give
Material passage 5 can intermittence dock successively with each mould 3.Fixed interval certain time, mould 3 note on rotating disk
After full with substance, switch in next mould 3, it is achieved the intermittent switching of mould 3.The switching of mould is permissible
Switching is controlled, when the switching of mould is not fully complete, and control valve can not be opened by controller.
Above the extrusion foaming system controlling intermittent duty provided by the present invention is described in detail, herein
Applying specific case to be set forth principle and the embodiment of the present invention, the explanation of above example is only intended to help
Understand the present invention and core concept.It should be pointed out that, for those skilled in the art, without departing from the present invention
On the premise of principle, it is also possible to the present invention is carried out some improvement and modification, these improve and modification also falls into right of the present invention
In the protection domain required.
Claims (10)
1. can control the extrusion foaming system of intermittent duty, including extruder, the chamber to be expected of constant temperature and the molding of cavity rear end to be expected
Mould, is provided with control valve between chamber to be expected and mould, extruder output molten material enters into the chamber to be expected of constant temperature
In；Control valve is closed, when the pressure expecting intracavity reaches higher limit；Extruder quits work, and makes the molten thing in chamber to be expected
Material is in constant pressure and constant temperature state, opens control valve, and the molten material of intracavity to be expected relies on and is discharged in mould from pressure.
The extrusion foaming system controlling gap operation the most according to claim 1, it is characterised in that when the pressure in chamber to be expected
When power is less than lower limit, open extruder.
The extrusion foaming system controlling gap operation the most according to claim 1, it is characterised in that described chamber to be expected
And being provided with feeder channel between mould, control valve is arranged on described feeder channel.
The extrusion foaming system controlling gap operation the most according to claim 2, it is characterised in that described chamber to be expected
On be provided with the pressure transducer being connected with controller, described extruder is controlled by the controller, and the force value in chamber to be expected exceedes
During the higher limit that controller sets, controller instruction extruder quits work；When the force value in chamber to be expected sets less than controller
Lower limit time, controller instruction extruder open.
The extrusion foaming system controlling gap operation the most according to claim 1, it is characterised in that described chamber to be expected
On be provided with attemperating unit, described attemperating unit includes treating the heating wire heated in material chamber and treats the cooling water of material chamber cooling
Circulation line.
The extrusion foaming system controlling gap operation the most according to claim 4, it is characterised in that described extruder
Including extrusion screw rod, gear-box, reductor and motor, between gear-box and reductor, it is provided with clutch, described control
Clutch described in device control.
The extrusion foaming system controlling gap operation the most according to claim 4, it is characterised in that described control valve
Controlled by described controller.
The extrusion foaming system controlling gap operation the most according to claim 5, it is characterised in that described extruder
Being connected with described feeder channel by end cap, described chamber to be expected is positioned at described end cap, and described attemperating unit is installed
On described end cap.
The most according to claim 8 control gap run extrusion foaming system, it is characterised in that described end cap and
Feeder channel all uses diminishing variable-diameter structure.
The extrusion foaming system controlling gap operation the most according to claim 1, it is characterised in that described shaping mould
Having multiple, can mutually switch between multiple moulds, feeder channel can intermittence dock successively with each mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610852479.0A CN106273196A (en) | 2016-09-27 | 2016-09-27 | The extrusion foaming system of intermittent duty can be controlled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610852479.0A CN106273196A (en) | 2016-09-27 | 2016-09-27 | The extrusion foaming system of intermittent duty can be controlled |
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| Publication Number | Publication Date |
|---|---|
| CN106273196A true CN106273196A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610852479.0A Pending CN106273196A (en) | 2016-09-27 | 2016-09-27 | The extrusion foaming system of intermittent duty can be controlled |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5997781A (en) * | 1996-04-04 | 1999-12-07 | Mitsui Chemicals, Inc. | Injection-expansion molded, thermoplastic resin product and production process thereof |
| CN1430548A (en) * | 2000-05-25 | 2003-07-16 | 特瑞赛尔公司 | Polymer foam processing with low blowing agent levels |
| CN201279881Y (en) * | 2008-10-16 | 2009-07-29 | 吉林大学珠海学院 | Micropore injection mould apparatus |
| US20120196115A1 (en) * | 2011-01-27 | 2012-08-02 | Choe Patrick Y | Injection molding systems and methods for forming materials used in footwear and materials manufactured by said systems and methods |
| CN105829049A (en) * | 2013-12-12 | 2016-08-03 | 戴铂国际公司 | Apparatus And Method For The Production Of Expanded Foam Embryos |
| CN206140789U (en) * | 2016-09-27 | 2017-05-03 | 黄吉人 | Steerable intermittent type operation extrude foaming system |
-
2016
- 2016-09-27 CN CN201610852479.0A patent/CN106273196A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5997781A (en) * | 1996-04-04 | 1999-12-07 | Mitsui Chemicals, Inc. | Injection-expansion molded, thermoplastic resin product and production process thereof |
| CN1430548A (en) * | 2000-05-25 | 2003-07-16 | 特瑞赛尔公司 | Polymer foam processing with low blowing agent levels |
| CN201279881Y (en) * | 2008-10-16 | 2009-07-29 | 吉林大学珠海学院 | Micropore injection mould apparatus |
| US20120196115A1 (en) * | 2011-01-27 | 2012-08-02 | Choe Patrick Y | Injection molding systems and methods for forming materials used in footwear and materials manufactured by said systems and methods |
| CN105829049A (en) * | 2013-12-12 | 2016-08-03 | 戴铂国际公司 | Apparatus And Method For The Production Of Expanded Foam Embryos |
| CN206140789U (en) * | 2016-09-27 | 2017-05-03 | 黄吉人 | Steerable intermittent type operation extrude foaming system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |