CN107428047A - Foam injection molding machine - Google Patents
Foam injection molding machine Download PDFInfo
- Publication number
- CN107428047A CN107428047A CN201680015838.5A CN201680015838A CN107428047A CN 107428047 A CN107428047 A CN 107428047A CN 201680015838 A CN201680015838 A CN 201680015838A CN 107428047 A CN107428047 A CN 107428047A
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- CN
- China
- Prior art keywords
- blowing agent
- physical blowing
- intracavitary
- closing
- molding machine
- 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.)
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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
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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
Abstract
The present invention provides the foam injection molding machine that can be manufactured inexpensively the good foam molded product of exterior quality.At least a portion for forming the face of chamber (6) is made up of porous plastid (10).The physical blowing agent lead-in path (41) that the fine emptying aperture that formed in fixing mould (4) or moveable die (5) has by porous plastid (10) connects with chamber (6), also, the core component (81) that can be come in and gone out in chamber (6) provided with one end.The molten resin of injection unit (3) is come to the interior injection/filling of chamber (6), then, after physical blowing agent feeding device (7) supplies physical blowing agent, core component (81) is driven to retreat by core drive mechanism (82), make the pressure in chamber (6), thus physical blowing agent is foamed, be shaped to the foam molded product of regulation shape.
Description
Technical field
The present invention relates to foam injection molding machine, more particularly to the melting by injection unit to intracavitary injection/filling
Infusion gets a haircut foam so as to make the structure of the die device of foam molded product shaping in resin.
Background technology
Conventionally, there is known following method：That is, the dioxy of supercriticality is injected in the molten resin stored into cartridge heater
Change carbon, nitrogen (in this specification, these are collectively referred to as physical blowing agent), generation physical blowing agent is in molten resin after uniform dissolution
Mixture, by intracavitary injection/filling of the mixture of acquisition to die device, manufacture includes the resin-formed body of micro air bubble
The method of (in this specification, the resin-formed body is referred to as foam molded product).The molten resin and physics that will be generated in cartridge heater
The mixture of foaming agent to intracavitary project when, due to drastically pressure reduce, extremely large amount of nuclei of bubbles is produced in molten resin.
While the molten resin and the mixture of physical blowing agent projected to intracavitary makes volume increase with the expansion of bubble, in chamber
Interior flowing is simultaneously filled.Bubble in molten resin is as away from cast gate, its diameter becomes big, while flow end drastically ruptures
Release gas.If the loading increase of the mixture of intracavitary, mould internal pressure improve, then bubble is compressed, the bubble of coarsening
Miniaturization.So as to be molded foam molded product.The forming method is referred to as MuCell (registration mark) technique (for example, referring to special
The summary of sharp document 1).By MuCell techniques, compared with general jet forming method, the light weight of synthetic resin can be realized
Change, the raising of dimensional stability, warpage/contraction prevent.
Before, injection unit of the present applicant as foam injection molding machine, it is proposed that in cartridge heater head
The built-in sleeve being made up of porous material, in the molten resin flowed by sleeve into the resin passage formed in the sleeve
Inject the device of physical blowing agent (for example, referring to the summary of patent document 2).If possessing the injection unit of this structure, with leading to
Cross the physical blowing agent hand-hole opened up in cartridge heater the situation of physical blowing agent injected into molten resin and compare, by increasing capacitance it is possible to increase
The contact area of molten resin and physical blowing agent, therefore, it is possible to improve the diffusion velocity of the physical blowing agent in molten resin,
Shorten the stroke cycle of shaping, improve the productivity of foam molded product.
Prior art literature
Patent document
Patent document 1:Japanese Patent Laid-Open 2005-271468 publications
Patent document 2:Japanese Patent Laid-Open 2012-232558 publications
The content of the invention
Problems to be solved by the invention
But the foam injection molding machine described in patent document 1,2 is all the molten resin for generating injection unit side
Structure with from the mixture of physical blowing agent to intracavitary injection/filling, therefore, bubble contact Cavity surface in molten resin and rupture
When rupture trace formed along the flow direction of mixture, be easily that foam molded product produces and is referred to as the outward appearance of vortex trace in product
It is bad.In addition, the foam injection molding machine according to described in patent document 1,2, in the slow plane of hardening of resin speed
In portion etc., the rupture trace of bubble turns into beautiful circle, and in hardening of resin speed than in faster corner etc., bubble is broken
Slight crack easily becomes ellipse, and according to this point, the exterior quality of foam molded product also easily deteriorates.
Moreover, the foam injection molding machine described in patent document 1 is the structure that physical blowing agent is injected into cartridge heater,
Therefore, the length of cartridge heater and screw mandrel is necessarily more confidential than in general ejection formation big.Thus, can not by it is existing it is general project into
Type machine transform foam injection molding machine as, and the manufacture of foam molded product needs expensive special machine.
The present invention proposes that its object is to provide to be manufactured inexpensively in order to solve such problem of the prior art
The foam injection molding machine of the good foam molded product of exterior quality.
For solving the mode of problem
The present invention is in order to solve the above problems, it is characterised in that possesses：Carry out the opening and closing of die device and the mould of matched moulds
Opening and closing/closing unit；To the injection unit for being projected/being filled a certain amount of molten resin by the intracavitary of the die device of matched moulds；To
The physical blowing agent feeding device of physical blowing agent is supplied in molten resin, in above-mentioned die device, formed with will be from above-mentioned thing
The physical blowing agent that infusion feedway of getting a haircut supplies imports the physical blowing agent lead-in path of above-mentioned intracavitary, also, is provided with
Injection/filling from from above-mentioned injection unit to the molten resin of above-mentioned intracavitary and stated upwards from above-mentioned physical blowing agent feeding device
After the supply of the physical blowing agent of intracavitary terminates, make what above-mentioned intracavitary decompression was foamed to make the physical blowing agent in molten resin
Decompressor.
According to this structure, the molten resin from injection unit supply and the physics hair from the supply of physical blowing agent feeding device
Infusion die device intracavitary mix, therefore, will not such as to intracavitary project/fill by injection unit generation molten resin and
The flowing of mixture occurs in intracavitary like that for the situation of the mixture of physical blowing agent.Thus, it is possible to prevent the stream by mixture
The generation for rupturing trace of vortex trace, ellipse caused by dynamic, improve the exterior quality of foam molded product.In addition, die device
Provided with decompressor, therefore, after the intracavitary for projecting/being filled with molten resin injects physical blowing agent, decompressor acts,
Depressurize intracavitary, so as to produce substantial amounts of bubble in molten resin.In addition, got a haircut to the intracavitary aliment of die device
Infusion, therefore, existing general Jet forming machine possessed cartridge heater and screw mandrel can directly convert, and can be manufactured inexpensively
Foam injection molding machine.
In addition, it is a feature of the present invention that form the face of above-mentioned chamber all or part of by with area than above-mentioned thing
Haircut infusion lead-in path sectional area want big porous plastid to form, the front end of above-mentioned physical blowing agent lead-in path with it is above-mentioned
The part connection for the fine emptying aperture that porous plastid has.
According to this structure, the physics that physical blowing agent lead-in path is directed into from physical blowing agent feeding device can be sent out
Infusion is directed into the fine emptying aperture that porous plastid has.The physical blowing agent imported in the fine emptying aperture that the porous plastid has
Spread by face direction of the emptying aperture along porous plastid, while in feeding chamber.Therefore, with it is straight from physical blowing agent lead-in path
Connect to the situation of intracavitary supply physical blowing agent and compare, contact area of the physical blowing body phase for molten resin can be expanded,
Make physical blowing agent uniform in molten resin and promptly spread, therefore the stroke cycle of shaping can be shortened, improve foaming
The productivity of products formed.
In addition, the foam injection molding machine of the said structure of the present invention, it is characterised in that as above-mentioned decompressor, if
Have by above-mentioned die device is installed in a manner of it can retreat and be configured to one end can come in and go out above-mentioned intracavitary core component and
The device that the core drive mechanism for driving above-mentioned core component to be retreated relative to above-mentioned chamber forms.
According to this structure, the core component prominent to intracavitary is made in injection/filling of molten resin in physical blowing agent
Supply after retreat, so as to make the pressure of intracavitary, therefore physical blowing agent can be made to foam.
In addition, the foam injection molding machine of the said structure of the present invention, it is characterised in that as above-mentioned decompressor, if
Have the relief pipe that is connected by one end with above-mentioned intracavitary and be opened and closed the reducer unit of the relief pipe into device.
According to this structure, in injection/filling of molten resin, relief pipe is closed by pressure-reducing valve, in physical blowing agent
After supply, relief pipe is opened by pressure-reducing valve, thus enables that the pressure of intracavitary, therefore physical blowing agent can be sent out
Bubble.
In addition, the foam injection molding machine of the said structure of the present invention, it is characterised in that as above-mentioned decompressor, adopt
With above-mentioned mould opening and closing/closing unit and the controller for the driving for controlling above-mentioned mould opening and closing/closing unit, controller noted above exists
Injection/filling from above-mentioned injection unit to the molten resin of above-mentioned intracavitary and from above-mentioned physical blowing agent feeding device to above-mentioned
After the supply of the physical blowing agent of intracavitary terminates, above-mentioned mould opening and closing/closing unit is driven, so that above-mentioned die device
Mold clamping force reduces.
According to this structure, in injection/filling of molten resin, by making die device with defined mold clamping force matched moulds,
The mold clamping force of die device is reduced after injection/filling of the molten resin to intracavitary and the supply of physical blowing agent terminate,
The pressure of intracavitary is thus enabled that, therefore physical blowing agent can be made to foam.
In addition, the foam injection molding machine of the said structure of the present invention, it is characterised in that above-mentioned porous plastid is by void content
5%~60% porous sintering metal material is formed.
Not only the through performance with physical blowing agent, the also intensity with porous plastid touch pass to the void content of porous plastid
Connection, when the void content of porous plastid is less than 5%, it is impossible to the confession of physical blowing agent is rapidly and sufficiently carried out into molten resin
Give, during more than 60%, the intensity deficiency of porous plastid turns into problem.Thus, by being burnt by the Porous of void content 5%~60%
Metal material is tied to be formed, the through performance of physical blowing agent and the mechanical strength of porous plastid can be balanced.In addition, Porous
Sintered metal materials are high intensity, therefore the life-span of die device will not be made a very bad impression.
The effect of invention
The foam injection molding machine of the present invention, from the molten resin of injection unit supply and from physical blowing agent feeding device
The physical blowing agent of supply mixes in the intracavitary of die device, therefore being capable of the higher foam molded product of molded appearance quality.
Brief description of the drawings
Fig. 1 is the structure chart of the foam injection molding machine involved by embodiment.
Fig. 2 is the sectional view for the 1st example for representing the die device that the foam injection molding machine involved by embodiment possesses.
Fig. 3 is the flow chart of the 1st example of the sequence of movement for representing the foam injection molding machine involved by embodiment.
Fig. 4 is the sectional view for the 2nd example for representing the die device that the foam injection molding machine involved by embodiment possesses.
Fig. 5 is the flow chart of the 2nd example of the sequence of movement for representing the foam injection molding machine involved by embodiment.
Embodiment
First, the structure of the foam injection molding machine involved by embodiment is illustrated with Fig. 1 and Fig. 2.
As shown in figure 1, the foam injection molding machine of this example possesses：Frame 1；Mould opening and closing/the closing unit carried on the frame 1
2 and injection unit 3；Located at the die device being made up of fixing mould 4 and moveable die 5 of mould opening and closing/closing unit 2；To
The physical blowing agent feeding device of supply physical blowing agent in the chamber 6 formed between the fixing mould 4 of matched moulds and moveable die 5
7；Make the decompressor 8 of the pressure in chamber 6；Control these mould opening and closing/closing unit 2, injection unit 3, physical blowings
The controller 9 of the driving of agent feeding device 7 and decompressor 8.
Frame 1 is formed as box-shaped with shaped steel (not shown) and sheet material, and controller 9, power supply (not shown) dress are stored inside it
Put, with tubing and distribution class etc..
Mould opening and closing/closing unit 2 includes：It is oppositely disposed at a prescribed interval and is separately fixed at the tailstock 21 on frame 1
And fixed form 22；Be configured between these tailstocks 21 and fixed form 22 and by can on frame 1 slidably in a manner of pacify
The movable template 23 of dress；The elbow-bar mechanism 24 that both ends link with tailstock 21 and movable template 23；Mould opening and closing/matched moulds is watched with electronic
Take motor 25；And be opened and closed mould/matched moulds is converted to the driving force of elbow-bar mechanism 24 with the revolving force of electric servomotor 25
Ball screw framework 26.Fixing mould 4 is carried in fixed form 22, moveable die 5 is carried in movable template 23.In addition,
Near the die device be made up of fixing mould 4 and moveable die 5, provided with for products formed to be taken out not from die device
The injection apparatus of diagram.
In said structure, if mould opening and closing/matched moulds with electric servomotor 25 along a defined direction rotation driving,
Then the helical axis of ball screw framework 26 advances, and elbow-bar mechanism 24 stretches, and backs to the edge of moveable die 5 of defined die sinking position
The direction advance close to fixing mould 4, in the stage that elbow-bar mechanism 24 stretches, fixing mould 4 and moveable die 5 are with defined
Mold clamping force carries out matched moulds.Thereby, it is possible to penetrating for molten resin is carried out into the chamber 6 formed between fixing mould 4 and moveable die 5
Go out/fill the supply with physical blowing agent.After shaping terminates, if reverse drive mould opening and closing/matched moulds electric servomotor 25,
Then the helical axis of ball screw framework 26 is retreated, and elbow-bar mechanism 24 is shunk, direction of the moveable die 5 along remote fixing mould 4
Retreat, return to die sinking position.Thereby, it is possible to take out products formed by injection apparatus.
Injection unit 3 mainly includes：Front end is provided with the cartridge heater 32 of injection nozzle 31；With the side that can be rotated and retreat
Formula is accommodated in the screw mandrel 33 of the inside of cartridge heater 32；The screw mandrel drive division 34 that drive screw 33 rotates and retreated；Storage of raw materials tree
The hopper 35 of fat；By the hopper block 36 in the material resin supply cartridge heater 32 of storage in hopper 35；In the periphery of cartridge heater 32
The band heater 37 of winding.Injection nozzle 31 is attached to fixing mould 4 when continuously running.
Adjoint and come ground if drive screw 33 rotates in cartridge heater 32, the material resin in hopper 35 imports heating
In cylinder 32.Frictional heat, the cutting heat that the material resin imported in cartridge heater 32 occurs due to the rotation driving of adjoint screw mandrel 33
And heating with heater 37 and melt, be stored in the leading section of cartridge heater 32 successively.The leading section storage of cartridge heater 32
The molten resin for the ormal weight deposited is advanced by drive screw 33, injection/filling into chamber 6.
As shown in figure 1, physical blowing agent feeding device 7 includes：Store CO2Gas, N2The gas cylinder of the unstrpped gas of gas etc.
71；Apply the supercritical fluid of HTHP and the physical blowing agent as supercriticality to the unstrpped gas that gas cylinder 71 supplies
Generating means 72；The physical blowing agent that the physical blowing agent that supercritical fluid generating means 72 supply is sprayed into chamber 6 supplies
Nozzle 73；Located at connection supercritical fluid generating means 72 and the open and close valve 75 of the pipeline 74 of physical blowing agent supply nozzle 73.
Physical blowing agent supply nozzle 73 is installed to the die device being made up of fixing mould 4 and moveable die 5.In addition, Fig. 1 example
In, it is only capable of being mounted with a physical blowing agent supply nozzle 73 in die device, but can also install in die device multiple
Physical blowing agent supply nozzle 73.Open and close valve 75 is opened and closed when projecting molten resin into chamber 6 every time, passes through physical blowing
Agent supply nozzle 73 supplies the physical blowing agent of ormal weight into chamber 6.
Drive of the control of controller 9 located at mould opening and closing/matched moulds electric servomotor 25 of mould opening and closing/closing unit 2
It is dynamic and stop, located at injection unit 3 screw mandrel drive division 34 driving and stopping, located at the super of physical blowing agent feeding device 7
The driving and stopping of critical fluids generating means 72 and open and close valve 75, the driving of decompressor 8 and stopping and spray (not shown)
The driving and stopping of injection device, so as to which continuous and automatically shaping makes desired foam molded product.
Fixing mould 4 and moveable die 5 are such as shown in Fig. 2 (a), (b), and (in this specification, the face is referred to as in the face of composition chamber 6
" Cavity surface ") at least a portion be made up of porous plastid 10.In addition, in Fig. 2 example, only formed in fixing mould 4 porous
Plastid 10, but can also all form porous plastid 10 in the both sides of fixing mould 4 and moveable die 5.In fixing mould 4 and can
, can be in the He of porous plastid 10 of the side of fixing mould 4 in matched moulds in the case that the both sides of moving mold 5 form porous plastid 10
The position that the porous plastid 10 of the side of moveable die 5 contacts with each other forms each porous plastid 10.So, by the side of fixing mould 4
Or the physical blowing agent lead-in path that the side of moveable die 5 is formed, can be in the side of fixing mould 4 and the side of moveable die 5
Physical blowing agent is imported in the porous plastid 10 that both sides are formed, therefore, it is possible to simplify the structure of die device.By porous plastid 10
Formation area be set to make the big of molten resin that the physical blowing body of ormal weight is diffused within the defined time in chamber 6
It is small.
Porous plastid 10 can be by being laser machined and shape to the desired part of fixing mould 4 and moveable die 5
Into.That is, (alloy powder is included to metal dust.) aggregate irradiation specified level laser after, make each gold using the heat
Category powder is partly mutually dissolved, and turns into porous sintering metal after solidification, therefore, by being processed as the fixation of regulation shape
The desired part divided metallic powder of mould 4 and moveable die 5 simultaneously irradiates laser, thus, energy to the metal dust after scattered
It is enough to form porous plastid 10 on the surface of fixing mould 4 and moveable die 5.Once-through operation can not form the Porous of wanted thickness
During body 10, scattered and laser the irradiation of metal dust is repeated with necessary number, until the thickness of porous plastid 10 reaches
Untill desired size.The void content of porous plastid 10 can be adjusted by changing laser power.
The void content of porous plastid 10 in order to balance the mechanical strength of the through performance of physical blowing agent and porous plastid 10,
It is adjusted to 5%~60%.That is, when void content is less than 5%, although improving the mechanical strength of porous plastid 10, it can be difficult to
The supply of physical blowing agent is rapidly and sufficiently carried out into chamber 6.Relatively, when void content is more than 60%, although being supplied into chamber 6
Physical blowing agent becomes easy, but the mechanical strength of porous plastid 10 is easily insufficient.Thus, the void content of porous plastid 10 is adjusted
Whole is 5%~60%.
Reach the physical blowing agent lead-in path 41 of porous plastid 10 in the formation of fixing mould 4 one end, in the physical blowing
Other one end of agent lead-in path 41, form the installing port 42 of physical blowing agent supply nozzle 73.In addition, in fixing mould 4
Other parts, provided with the cast gate 43 in the molten resin introduction chamber 6 that will be projected from injection unit 3.Relatively, in moveable die 5,
Providing holes 51 provided with the core component 81 for forming decompressor 8.Because die device is so formed, therefore from injection unit 3
Injection/the filling into chamber 6 by cast gate 43 of the molten resin of injection.In addition, it is mounted with that physical blowing agent supplies in installing port 42
In the state of nozzle 73, if opening the open and close valve 75 of physical blowing agent feeding device 7, given birth to by supercritical fluid generating means 72
Into physical blowing body (supercritical fluid) porous plastid 10 is reached by physical blowing agent lead-in path 41.Then, reach more
Face direction diffusion of the fine emptying aperture that the physical blowing body of hole plastid 10 has by porous plastid 10 along porous plastid 10, together
When supplied into chamber 6.
Such as Fig. 2 (a), (b) of decompressor 8 is shown, including：The core set in providing holes 51 in a manner of it can retreat
Part 81；The core drive mechanism 82 for driving the core component 81 to retreat.As core drive mechanism 82, magnetic valve can be used
Deng motor drive mechanism, oil pressure hydraulic cylinder etc. oil sector.Core component 81 until injection/filling molten resin into chamber 6 and
Untill supplying physical blowing agent into chamber 6, as shown in Fig. 2 (a), its leading section is prominent into chamber 6, and physics is being supplied into chamber 6
Regulation timing after foaming agent, as shown in Fig. 2 (b), its front end face backs to the position that a face is formed with Cavity surface.Thus, chamber 6
Interior decompression, the physical blowing agent supplied into molten resin are foamed.
Hereinafter, the action of the foam injection molding machine involved by embodiment is illustrated with Fig. 3.Form foam injection molding machine
The action of each several part performed according to the command signal from controller 9.
First, under the holding state before automatic operating is indicated by operator, elbow-bar mechanism 24 is shunk, at moveable die 5
In defined going-back position, fixing mould 4 and moveable die 5 turn into die opening state.In addition, supercritical fluid generating means 72 exist
Before indicating automatic operating by operator, physical blowing agent is generated.Moreover, core component 81 is prominent into chamber 6.
Since the state, after indicating automatic operating by operator, controller 9 drives mould opening and closing/matched moulds to be watched with electronic
Take motor 25 to rotate along a defined direction, stretch elbow-bar mechanism 24, make setting of the moveable die 5 to fixing mould 4
Advance (step S1) in direction.When moveable die 5 proceeds to defined position, although fixing mould 4 and moveable die 5 turn into mold closing
State, but further driving mould opening and closing/matched moulds is rotated with electric servomotor 25 along same direction, makes elbow-bar mechanism 24
It is stretched over the limit.Thus, fixing mould 4 and moveable die 5 turn into matched moulds state, the shape between fixing mould 4 and moveable die 5
The chamber 6 of established practice setting shape.
After matched moulds, advanced by the drive screw 33 of screw mandrel drive division 34, melt a certain amount of of storage in cartridge heater 32
Melt resin injection/filling (step S2) into chamber 6 by injection nozzle 31 and cast gate 43.After molten resin injection/filling, make out
Valve closing 75 carries out out operation, passes through pipeline 74, physical blowing agent by the physical blowing agent that supercritical fluid generating means 72 generate
Supply nozzle 73, physical blowing agent lead-in path 41 and porous plastid 10 are supplied to (step S3) in chamber 6.
Then, drive core component 81 to retreat by core drive mechanism 82, make decompression (step S4) in chamber 6.Thus, melt
The core of the physical blowing agent disperseed in resin grows into bubble, molten resin is foamed, therefore, makes the foaming of regulation shape
Product are molded (step S5).
After foam molded product shaping, reverse drive mould opening and closing/matched moulds electric servomotor 25, receive elbow-bar mechanism 24
Contracting, makes moveable die 5 return to defined going-back position (step S6).Thus, fixing mould 4 and moveable die 5 turn into die sinking shape
State, therefore, injection apparatus (not shown) is driven, foam molded product (step S7) is taken out from moveable die 5.Action above is always
Untill persistently reaching presetting number of stroke.
The mixing of foam injection molding machine generation molten resin and physical blowing agent in chamber 6 involved by embodiment
Body, therefore, the flowing of mixture does not occur in chamber 6, the generation for rupturing trace of vortex trace, ellipse, Neng Gouti can be prevented
The exterior quality of high-foaming products formed.In addition, physical blowing agent is supplied into chamber 6, and therefore, existing general ejection formation equipment
Standby cartridge heater and screw mandrel can directly convert, and can be manufactured inexpensively foam injection molding machine.
In addition, the invention described in the invention is not restricted to above-mentioned embodiment, in the scope energy for the spirit for not departing from the present invention
Enough suitable changes.
For example, in above-mentioned embodiment, as decompressor 8, using by core component 81 and the driving core component 81
The device that the core drive mechanism 82 of advance and retreat is formed, but the decompressor of other structures can certainly be used.As decompression
Other examples of device 8, connected and the relief pipe 83 of the other end and atmosphere with chamber 6 by one end as shown in figure 4, can use
The device formed with the pressure-reducing valve 84 for being opened and closed the relief pipe 83.Pressure-reducing valve 84 is closed into the physical blowing agent into chamber 6 always
Supply terminate untill (Fig. 3 step S3), into chamber 6 supply physical blowing agent terminate after regulation timing carry out out behaviour
Make.Thus, the physical blowing agent foaming disperseed in molten resin.
In addition, as decompressor 8, core component 81 and core drive mechanism 82 can also be substituted or using relief pipe
83 and the structure of pressure-reducing valve 84, and use the structure with mould opening and closing/closing unit 2 and controller 9.In this case, such as Fig. 5
It is shown, terminate in step s 13 after supplying physical blowing agent into chamber 6, be transferred to step S14, make mould opening and closing/matched moulds electricity consumption
Rotation amount as defined in dynamic servo motor 25 along die sinking direction driving.Thus, depressurize in chamber 6, therefore, disperse in molten resin
Physical blowing agent foamed.In addition, Fig. 5 step S11~step S13 and step S15~step S17 and Fig. 3 the step of
S1~step S3 and step S5~step S7 are suitable.Above steps eliminates explanation in order to avoid repeating.
Utilization possibility in industry
The present invention can be used for the foam injection molding machine of the manufacture suitable for foam molded product.
The explanation of symbol
1 ... frame, 2 ... mould opening and closings/closing unit, 3 ... injection units, 4 ... fixing moulds, 5 ... moveable dies, 6 ... chambers,
7 ... physical blowing agent feeding devices, 8 ... decompressors, 9 ... controllers, 10 ... porous plastids, 21 ... tailstocks, 22 ... stents
Plate, 23 ... movable templates, 24 ... elbow-bar mechanisms, 25 ... mould opening and closings/matched moulds electric servomotor, 26 ... ball-screw machines
Structure, 31 ... injection nozzles, 32 ... cartridge heaters, 33 ... screw mandrels, 34 ... screw mandrel drive divisions, 35 ... hoppers, 36 ... hopper blocks, 37 ... bands
Heater, 41 ... physical blowing agent lead-in paths, 42 ... nozzle installing ports, 43 ... cast gates, 51 ... providing holes, 71 ... gas cylinders,
72 ... supercritical fluid generating means, 73 ... physical blowing agent supply nozzles, 74 ... pipelines, 75 ... open and close valves, 81 ... cores
Part, 82 ... core drive mechanisms.
Claims (9)
1. a kind of foam injection molding machine, it is characterised in that possess：
Carry out the opening and closing of die device and mould opening and closing/closing unit of matched moulds；To the die device after matched moulds intracavitary project/
Fill the injection unit of a certain amount of molten resin；And the physical blowing agent supply of physical blowing agent is supplied into molten resin
Device,
In the die device, formed with described in the physical blowing agent importing that will be supplied from the physical blowing agent feeding device
The physical blowing agent lead-in path of intracavitary, also, provided with the injection from the injection unit to the molten resin of the intracavitary/
Filling and the supply of physical blowing agent from from the physical blowing agent feeding device to the intracavitary subtract the intracavitary after terminating
Press to make the decompressor that the physical blowing agent in molten resin foams.
2. the foam injection molding machine described in claim 1, it is characterised in that
Form the face of the chamber all or part of by with area than the physical blowing agent lead-in path sectional area will
Big porous plastid is formed, the front end of the physical blowing agent lead-in path and fine emptying aperture possessed by the porous plastid
A part connection.
3. the foam injection molding machine described in claim 1, it is characterised in that
As the decompressor, provided with can be gone out by being installed on the die device in a manner of it can retreat and being configured to one end
Enter the dress that the core drive mechanism that the core component of the intracavitary and the driving core component are retreated relative to the chamber forms
Put.
4. the foam injection molding machine described in claim 2, it is characterised in that
As the decompressor, provided with can be gone out by being installed on the die device in a manner of it can retreat and being configured to one end
Enter the dress that the core drive mechanism that the core component of the intracavitary and the driving core component are retreated relative to the chamber forms
Put.
5. the foam injection molding machine described in claim 1, it is characterised in that
As the decompressor, provided with the relief pipe connected by one end with the intracavitary and the reducer unit of the relief pipe is opened and closed
Into device.
6. the foam injection molding machine described in claim 2, it is characterised in that
As the decompressor, provided with the relief pipe connected by one end with the intracavitary and the reducer unit of the relief pipe is opened and closed
Into device.
7. the foam injection molding machine described in claim 1, it is characterised in that
As the decompressor, using the drive of the mould opening and closing/closing unit and the control mould opening and closing/closing unit
Dynamic controller, the controller is in injection/filling from the injection unit to the molten resin of the intracavitary and from described
After supply of the physical blowing agent feeding device to the physical blowing agent of the intracavitary terminates, the mould opening and closing/matched moulds is driven
Unit, so that the mold clamping force of the die device reduces.
8. the foam injection molding machine described in claim 2, it is characterised in that
As the decompressor, using the drive of the mould opening and closing/closing unit and the control mould opening and closing/closing unit
Dynamic controller, the controller is in injection/filling from the injection unit to the molten resin of the intracavitary and from described
After supply of the physical blowing agent feeding device to the physical blowing agent of the intracavitary terminates, the mould opening and closing/matched moulds is driven
Unit, so that the mold clamping force of the die device reduces.
9. the foam injection molding machine described in claim 2, it is characterised in that
The porous plastid is formed by the porous sintering metal material of void content 5%~60%.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-055244 | 2015-03-18 | ||
| JP2015055244A JP2016175204A (en) | 2015-03-18 | 2015-03-18 | Injection foam molding machine |
| PCT/JP2016/056662 WO2016147896A1 (en) | 2015-03-18 | 2016-03-03 | Foam injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107428047A true CN107428047A (en) | 2017-12-01 |
| CN107428047B CN107428047B (en) | 2019-12-24 |
Family
ID=56920058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680015838.5A Expired - Fee Related CN107428047B (en) | 2015-03-18 | 2016-03-03 | Injection foaming forming machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2016175204A (en) |
| CN (1) | CN107428047B (en) |
| WO (1) | WO2016147896A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889034A (en) * | 2022-05-09 | 2022-08-12 | 东莞兆阳兴业塑胶制品有限公司 | Shoe mold for supercritical foaming |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI697395B (en) * | 2017-05-23 | 2020-07-01 | 歐特捷實業股份有限公司 | Molding processing system of foamed polymer |
| JP6994394B2 (en) * | 2018-01-26 | 2022-01-14 | 東洋機械金属株式会社 | Foam molding mold and injection molding system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4975671A (en) * | 1972-11-24 | 1974-07-22 | ||
| JPH10156856A (en) * | 1996-11-29 | 1998-06-16 | Beishin Kogyo Kk | Method for molding of synthetic resin molding |
| JP2003276045A (en) * | 2002-03-25 | 2003-09-30 | Inoac Corp | Molding method for resin foam-molded article |
| JP2005238726A (en) * | 2004-02-27 | 2005-09-08 | Toyota Boshoku Corp | Injection foam-molding method and shaping mold used for it |
| JP2010208202A (en) * | 2009-03-11 | 2010-09-24 | Sekisui Chem Co Ltd | Method and device for manufacturing foam |
| JP2011046011A (en) * | 2009-08-25 | 2011-03-10 | Mazda Motor Corp | Molding method and molding device for foamed resin molded product with skin |
| JP2012232558A (en) * | 2011-05-09 | 2012-11-29 | Toyo Mach & Metal Co Ltd | Injection device of foam injection molding machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08252844A (en) * | 1995-03-16 | 1996-10-01 | Nissan Motor Co Ltd | Method for foam injection molding and mold structure for foam injection molding |
| JPH0976297A (en) * | 1995-09-11 | 1997-03-25 | Hitachi Ltd | Injection molding method of foamed plastic molding |
| JP5605807B2 (en) * | 2010-08-05 | 2014-10-15 | 積水テクノ成型株式会社 | Molding device for foamed resin moldings |
| JP2012081713A (en) * | 2010-10-14 | 2012-04-26 | Suzuki Motor Corp | Foam molding die |
| JP5771058B2 (en) * | 2011-04-26 | 2015-08-26 | 旭化成株式会社 | Molding method of resin |
-
2015
- 2015-03-18 JP JP2015055244A patent/JP2016175204A/en active Pending
-
2016
- 2016-03-03 CN CN201680015838.5A patent/CN107428047B/en not_active Expired - Fee Related
- 2016-03-03 WO PCT/JP2016/056662 patent/WO2016147896A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4975671A (en) * | 1972-11-24 | 1974-07-22 | ||
| JPH10156856A (en) * | 1996-11-29 | 1998-06-16 | Beishin Kogyo Kk | Method for molding of synthetic resin molding |
| JP2003276045A (en) * | 2002-03-25 | 2003-09-30 | Inoac Corp | Molding method for resin foam-molded article |
| JP2005238726A (en) * | 2004-02-27 | 2005-09-08 | Toyota Boshoku Corp | Injection foam-molding method and shaping mold used for it |
| JP2010208202A (en) * | 2009-03-11 | 2010-09-24 | Sekisui Chem Co Ltd | Method and device for manufacturing foam |
| JP2011046011A (en) * | 2009-08-25 | 2011-03-10 | Mazda Motor Corp | Molding method and molding device for foamed resin molded product with skin |
| JP2012232558A (en) * | 2011-05-09 | 2012-11-29 | Toyo Mach & Metal Co Ltd | Injection device of foam injection molding machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889034A (en) * | 2022-05-09 | 2022-08-12 | 东莞兆阳兴业塑胶制品有限公司 | Shoe mold for supercritical foaming |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107428047B (en) | 2019-12-24 |
| WO2016147896A1 (en) | 2016-09-22 |
| JP2016175204A (en) | 2016-10-06 |
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