CN106738662B - Type chamber inserts and the method for preparing product using type chamber inserts - Google Patents
Type chamber inserts and the method for preparing product using type chamber inserts Download PDFInfo
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- CN106738662B CN106738662B CN201710070341.XA CN201710070341A CN106738662B CN 106738662 B CN106738662 B CN 106738662B CN 201710070341 A CN201710070341 A CN 201710070341A CN 106738662 B CN106738662 B CN 106738662B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 108
- 239000007924 injection Substances 0.000 claims abstract description 108
- 239000000155 melt Substances 0.000 claims abstract description 68
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000004513 sizing Methods 0.000 claims abstract description 6
- 230000004927 fusion Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005325 percolation Methods 0.000 claims description 5
- 239000000047 product Substances 0.000 description 34
- 238000001746 injection moulding Methods 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 10
- 229920001903 high density polyethylene Polymers 0.000 description 9
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- 230000008569 process Effects 0.000 description 9
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- 230000000694 effects Effects 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 102220040412 rs587778307 Human genes 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
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- 238000005859 coupling reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
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- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 238000009792 diffusion process Methods 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
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- 239000004417 polycarbonate Substances 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2756—Cold runner channels
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
- B29C2045/2709—Gates with a plurality of mould cavity inlets in close proximity
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76859—Injection
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses type chamber inserts, including insert bodies, a melt injection cold runner, secondary melt multiply injection mechanism, sluice way and secondary chamber, melt injection cold runner and secondary melt multiply injection mechanism are both connected to one end of type chamber, and secondary chamber is connected to the other end of type chamber.The method for preparing product is also disclosed, specifically: (1) it is under the injection pressure of 1000~1850Bar, a melt is intracavitary for 80~100 DEG C of type with the injection speed injection temperature of 25~35ccm/s；(2) under the injection pressure of 1500~2299Bar, the secondary melt of multiply is intracavitary with the injection speed injection type of 15~38.4ccm/s simultaneously, the secondary melt of multiply pushes a melt to fill up type chamber, and penetrates a melt and enter secondary chamber through sluice way；(3) finished product is obtained after cooling pressure maintaining sizing.The invention enables the secondary melts of different number of share of stocks independently can steadily penetrate a melt.
Description
Technical field
The present invention relates to two kinds of same or different injection molding mold cavity inserts of polymer, which can realize more
The secondary melt of stock, which stablizes the independence of a melt, to be penetrated and finally forms, and further relates to a kind of utilize type chamber inserts preparation system
The method of product belongs to Polymer moulding field.
Background technique
More melt multiple injections form (Multi-Melt Multi-Injection Molding, M3It IM is) one kind by general
What logical injection moulding (Conventional Injection Molding, CIM) grew up, it is commonly used and studies at present
A kind of new polymers inject processing method, belong to multi-fluid multiple injection molding (Multi-Fluid Multi-
Injection Molding, MFMIM) one kind, forming process, which mainly includes that a melt is short, penetrates half packed type chamber, one
Secondary melt not yet cooling and shaping when the injection of secondary melt push a melt to fill up type chamber and penetrate a melt to enter secondary chamber, shape
At " skin-core " structure (clad structure).
Compared with CIM, M3IM has the penetration of secondary melt, and a melt and secondary melt melt are in type chamber
Flow regime and simple single injection it is entirely different.And with gas-assistance injection molding (Gas Assisted Injection
Molding, GAIM) and water-assisted injection molding (WaterAssisted Injection Molding, WAIM) compare, M3IM's
A secondary fluid is melt, and viscosity is bigger with coefficient of friction, and diffusion coefficient is then smaller, thus the phase interaction between a melt interface
With more complicated.Due in secondary melt injection process, a melt is in the soft of the rigid constraint of die wall and secondary melt
Property constraint between, towing and penetration by secondary melt, the secondary melt then effect of dragging by a melt, two
Complicated shear flow field and interaction are formed on kind of melt interface, in addition from die wall to the temperature gradient field of melt sandwich layer,
The complicated coupling outfield in M3IM process is constituted, the condensed state of polymer can occur off field outside the coupling of this complexity
The differentiation of multi-stratification forms shortrange order, and the height-oriented structure of long-range, streamwise generates on each level of product
A variety of crystal habits or a variety of crystal forms.Due to the promotion and filling of secondary melt, M3IM product generally has more than CIM product
The case where product defects such as perfect contraction, stress warpage, the dent of shape size stability such as product surface occur is opposite to be subtracted
It is few；Additionally, due to the diversification structure in different levels, therefore M3IM product has compared with the superior mechanical property of CIM product,
And be more hopeful to be endowed functionalization feature, conductive structure is such as coated, electrostatic shielding structure or dielectric, piezoelectric structure etc. are realized
The single process functionalization of injection molded article.But it needs to be emphasized that M3IM and common coinjection moulding (Co-
Injection Molding) or injection moulding for sandwich part (Sandwich Injection Molding) not identical, M3IM is to adopt
The injection that secondary melt is carried out with the detachable injecting unit of an independence causes a melt high speed, complete
It penetrates, this is exactly " puncture " phenomenon (Breakthrough) fought off in co-injection or injection moulding for sandwich part.It is penetrating
In the process, secondary melt front end is significantly greater than co-injection or injection moulding for sandwich part for the relative velocity of a melt, at two kinds
It the relative flow that is generated on melt interface and should change sufficiently, be more advantageous to the generation of orientation texture.
Existing scholar is successfully prepared for sub-thread melt of secondary Melt penetration by constructing corresponding mold at present
M3IM product (number of patent application 201510654476.1).But the M of the secondary melt of Melt penetration of sub-thread3IM product only has
Interaction interface between one melt, when the interaction of two kinds of melts is weaker will greatly restriction interface to two kinds
The influence that melt generates, and the macroscopic form structure of sub-thread melt of secondary Melt penetration is more single, to the figuration in later period
Significant limitation will be generated with functionalization.If increasing M3The number at the constraint interface during IM, increases two kinds of polymer
Between the area that interacts, it would be possible to be hopeful to find more different polymer orientation structures under flow field, make M3IM
It is further widened toward functionalization and the research field of contour structures systematization.
Summary of the invention
It is an object of the invention to overcome the above-mentioned problems in the prior art, a kind of type chamber inserts is provided and utilizes type
The method that chamber inserts prepares product, the invention enables the secondary melts of different number of share of stocks independently can steadily penetrate a melt,
The interface number for increasing a melt and the interaction of secondary melt is reducing mold manufactory and maintenance cost, is improving productive experiment
It is raising M while efficiency3Every mechanical property of IM product such as impact flexibility, tensile strength and interface peel intensity etc., with
And M3The structure diversification of IM product and the research of performance functionalization provide new condition and basis.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of type chamber inserts, including insert bodies, a melt are injected cold runner, secondary melt multiply injection mechanism, are drawn
Runner and secondary chamber, the melt injection cold runner and secondary melt multiply injection mechanism are both connected to one end of type chamber, institute
State the other end that secondary chamber is connected to type chamber by sluice way.
The secondary melt multiply injection mechanism includes that secondary melt injects cold sprue and a plurality of runner, a plurality of shunting
The one end in road is injected cold sprue with secondary melt and is connect, and the other end is connect with type chamber.
The diameter that the secondary melt injects cold sprue is greater than the diameter of runner.
The melt injection cold runner is connect by a melt injection gate with type chamber, the secondary melt multiply
Injection mechanism is connect by secondary melt injection gate with type chamber.
Melt injection gate structure cylindrical, the secondary tapered structure of melt injection gate.
The type chamber is rectangular configuration, and the thickness of 3.5~4.5 times of type chambers of width of type chamber.
The sluice way is fishtail structure.
Fastening screw hole and thermometer hole are provided in the insert bodies.
The type chamber inserts further includes locking wedge, be provided on the locking wedge locking inclined-plane and with fastening screw hole pair
The locking wedge screw hole answered.
A method of product being prepared using type chamber inserts, is included the following steps:
(1) under the injection pressure of 1000~1850Bar, a melt is injected with the injection speed of 25~35ccm/s
Temperature is that 80~100 DEG C of type is intracavitary and formed and short penetrate melt；
(2) it is injecting within the 10s after a melt, it is under the injection pressure of 1500~2299Bar, multiply is secondary molten
Body is intracavitary with the injection speed injection type of 15~38.4ccm/s simultaneously and forms percolation melt, and the secondary melt of multiply pushes primary
Melt fills up type chamber, and penetrates a melt and enter secondary chamber through sluice way；
(3) finished product is obtained after cooling pressure maintaining sizing.
Melt fusion plastification under conditions of 190~200 DEG C is formed.
Secondary melt fusion plastification under conditions of 200~220 DEG C is formed.
Beneficial effects of the present invention:
One, the invention enables the secondary melts of different number of share of stocks independently can steadily penetrate a melt, increases primary
The interface number of melt and the interaction of secondary melt, and the addition of the secondary melt of multiply is increased and is acted between two-phase polymer
Area, melt constraint interface suffered in type chamber have individually become present two, three even four from original
A, the shear flow effect of generation is more significant, and the interaction between two kinds of polymer is more complicated, can produce on each level
Raw structure change is also more abundant.Mold manufactory and maintenance cost is being reduced, is being M while improving productive experiment efficiency3IM system
The research of product structure diversification and performance functionalization provides new condition and basis.
Two, the assembly of inserts meets corresponding injecting systems and mold in the present invention, positioning and the addition of locking wedge and
Layout designs can guarantee that a melt and secondary melt can smoothly enter into inserts type chamber, and inserts fitting surface does not occur in injection process
Overlap flash and die joint overlap and flash.The number of share of stock for penetrating a melt of secondary melt can pass through replaceable type
Chamber inserts flexibility and changeability strand can be replaced from two strands to three to four strands by different type chamber inserts again, secondary increasing
While injecting melt number of share of stock, the apparent size and form of product is successfully regulated and controled, have met in experimentation to injection moulding
The requirement of product microscopic dimensions precision establishes basis with research to subsequent processing.
Three, the applicable range of polymers of the present invention is extensive, by experimental verification, the general preferable typical zolymerization of processing performance
The polypropylene of for example various viscosity of object, polyethylene, polystyrene etc. can be perfectly suitable for the present invention, for other machinable works
Journey class plastics, such as polycarbonate also obtain feasibility verifying in an experiment.
Four, present device production is simple and maintenance cost is low, using simplicity, is easy to carry about with one and replaces, and service precision is high.
Thus the morphosis of equipment resulting product can arbitrarily be replaced according to the inserts of used different secondary melt runner number
It obtains, the M that biphasic injection melt number is two strands, three strands and four strands can be obtained respectively3IM product, and the apparent size of product compared with
To be accurate, the functional performance of end product can be according to the type of polymer of selection, the type and working process parameter of filler
It neatly assigns and adjusts, the M that mechanical property is also penetrated compared with sub-thread3IM product is more excellent, and the microstructure inside product is also more
Add ground diversification.
Five, in preparation method of the invention, when theing improvement is that further having adjusted secondary melt injects of emphasis
Cavity temperature and injection pressure and speed.The setting of cavity temperature enables a melt to keep preferable in type chamber
Flow regime, convenient for melt penetrate and steady flow；In addition injection pressure and speed when secondary melt is injected are set
It sets, for general Common Polymers such as PE, PP, secondary melt can be made steadily to flow simultaneously when penetrating a melt
Smoothly penetrating a melt enters secondary chamber.It is not that injection pressure is higher, injection speed is bigger, just can centainly make per share secondary
Melt all steady flows simultaneously penetrate a melt respectively and enter secondary chamber.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1.
Fig. 2 is the structural schematic diagram of locking wedge in embodiment 1.
Fig. 3 is the process schematic that melt of secondary Melt penetration prepares product in embodiment 1.
Fig. 4 is the appearance diagram using 1 resulting product of embodiment.
Fig. 5 is the structural schematic diagram of embodiment 2.
Fig. 6 is the appearance diagram using 2 resulting product of embodiment；In the figure, it is marked as 1, insert bodies, 2, type chamber, 3,
Melt injects cold runner, 4, melt injection gates, 5, secondary melt inject cold sprue, 6, runner, 7, secondary
Melt injection gate, 8, sluice way, 9, secondary chamber, 10, fastening screw hole, 11, thermometer hole, 12, locking wedge, 13, locking wedge screw hole,
14, inclined-plane is locked.
Specific embodiment
Embodiment 1
A kind of type chamber inserts, including insert bodies 1, melt injection cold runner 3, secondary melt multiply injection mechanism,
Sluice way 8 and secondary chamber 9 offer type chamber 2, the melt injection cold runner 3 and secondary melt multiply note in the main body
One end that mechanism is both connected to type chamber 2 is penetrated, the pair chamber 9 is connected to the other end of type chamber 2 by sluice way 8.
In the present embodiment, the secondary melt multiply injection mechanism includes that secondary melt injects cold sprue 5 and a plurality of point
Runner 6.Wherein, the quantity of runner 6 is preferably 4, and one end of 4 runners 6 and secondary melt are injected cold sprue 5 and connected
It connects, the other end of 4 runners 6 is connect with type chamber 2, guarantees can smoothly enter into for melt.Melt injection cold runner 3 with
The flow direction of runner 6 is substantially parallel, not enter runner 6 when guaranteeing that a melt enters type chamber 2, to secondary melt
It flows and penetrates and cause to interfere.The sluice way 8 is fishtail structure, and the sluice way 8 of fishtail structure is provided with 2 end of type chamber
It is directly connected to type chamber 2, and using narrowing from the width, being changed by thick thinning sectional area, guarantees that melt is smoothly drained and played
The effect of current limliting, when making cooling pressure maintaining in type chamber 2 dwell pressure abundance；Secondary chamber 9 is connected to the end of sluice way 8, for storing up
Extra primary and secondary melt is deposited, being full of for guarantee type chamber 2 penetrates and inject the pressure holding effect of final stage.
Further, the quantity of the runner 6 is preferably 4.
In the present embodiment, the melt injection cold runner 3 is connect by a melt injection gate 4 with type chamber 2, institute
It states secondary melt multiply injection mechanism and is connect by secondary melt injection gate 7 with type chamber 2, a melt injection gate 4
Structure cylindrical, the tapered structure of the secondary melt injection gate 7, wherein secondary melt multiply injection mechanism passes through two
The specific connection structure of secondary melt injection gate 7 and type chamber 2 are as follows: a plurality of runner 6 in secondary melt multiply injection mechanism divides
It is not connect by multiple secondary melt injection gates 7 with type chamber 2.Due to needing to guarantee that two kinds of melts are injected via a melt
Flow direction keeping parallelism when cast gate 4 and secondary melt injection gate 7 enter type chamber 2, therefore it is required that the runner of two kinds of melts exists
It is in parallel arrangement before cast gate.In addition, a plurality of runner 6 uses equally distributed mode, the distance between every runner 6 phase
It is also equal at a distance from the runner 6 to die wall both sides of right end Deng the runner 6 of, left end, guarantee that the secondary melt of multiply exists
Penetrate in a melt that only there is a situation where flow instabilities and weldings for the property of may be less likely to.Secondary melt injects cold sprue 5
Diameter should be greater than 6 diameter of runner, and secondary melt injection gate 7 is tapered, and due to depressurization, this structure design can
Guarantee to be formed in type chamber 2 and low pressure and form high pressure in runner 6, can effectively weaken that a melt is short to be injected into type chamber
The case where 2 Shi Yici melts enter runner 6.
In the present embodiment, the type chamber 2 is rectangular configuration, and the length of type chamber 2, width and thickness have certain ratio
Example, 2 width of type chamber, 3.5-4.5 times of 2 thickness of type chamber so that secondary melt its section in penetrating a melt process have compared with
Big possibility keeps uniform round, reduces secondary melt section since deformation occurs and produces secondary melt for biggish width-thickness ratio
The case where raw lateral flow.
In the present embodiment, fastening screw hole 10 and thermometer hole 11, the type chamber inserts are provided in the insert bodies 1
Further include locking wedge 12, locking inclined-plane 14 and locking wedge screw hole corresponding with fastening screw hole 10 are provided on the locking wedge 12
13.Insert bodies 1 and locking wedge 12 are finally fixed in the inserts assembly cavity being assemblied on active and inactive mold plate.The tool of insert bodies 1
Body fixation procedure are as follows:
By taking dynamic model side shown in FIG. 1 insert bodies 1 as an example, two up and down perpendicular to melt flows direction of insert bodies 1
Side is datum clamp face, and the upper and lower side with inserts assembly cavity is transition fit；And 10 position of top fastening screw hole is prominent
The upper side of structure and left side are non-referenced face out, are clearance fit with the upper side of inserts type chamber 2 and left side.Locking wedge
12 left side is parallel to the side that melt flows direction is located on the right side of type chamber 2 with insert bodies 1 and is bonded, the right side of locking wedge 12
Face is locking inclined-plane 14, is matched with the gradient of the right side of inserts assembly cavity；Insert bodies 1 are parallel to melt flows direction position
Be locked face of the side as insert bodies 1 on the left of type chamber 2.When assembly, upper and lower sides of the insert bodies 1 in inserts assembly cavity
Face is cooperated, and the movement of the vertical direction in inserts assembly cavity of insert bodies 1 is restrained, but the movement of horizontal direction is not yet
It is constrained；Then locking wedge 12 is put into the inserts chamber remaining space on the right side of insert bodies 1, and by locking inclined-plane 14
The left side of insert bodies 1 is compressed, the movement of the horizontal direction in inserts assembly cavity of insert bodies 1 is limited, works as inserts
After 1 left side of main body is compressed with inserts chamber left side wall, depth position pair of 12 main body of locking wedge in inserts assembly cavity is adjusted
Insert bodies 1 and locking wedge 12 itself carry out the positioning in inserts assembly cavity, while in fastening screw hole 10 and locking wedge screw hole
It is inserted into corresponding soket head cap screw in 13 and tightens, that is, completes the assembly to dynamic model side insert bodies 1 and locking wedge 12.Cover half
The insert bodies 1 of side and the assembly of locking wedge 12 are identical as dynamic model side.
In the present embodiment, the type chamber inserts is Demountable, in actual use, different when needing to use
When melt of secondary Melt penetration for number of share of stock, the type chamber inserts by replacing different runners 6 be can be realized.
In the present embodiment, type chamber 2, secondary chamber 9 and runner are realized by molding, therefore after the completion of cooling pressure maintaining, energy
It is enough to take out product, runner condensate and secondary 9 condensate of chamber together.
Embodiment 2
A kind of type chamber inserts, including insert bodies 1, melt injection cold runner 3, secondary melt multiply injection mechanism,
Sluice way 8 and secondary chamber 9 offer type chamber 2, the melt injection cold runner 3 and secondary melt multiply note in the main body
One end that mechanism is both connected to type chamber 2 is penetrated, the pair chamber 9 is connected to the other end of type chamber 2 by sluice way 8.
In the present embodiment, the secondary melt multiply injection mechanism includes that secondary melt injects cold sprue 5 and a plurality of point
Runner 6.Wherein, the quantity of runner 6 is preferably 2, and one end of 2 runners 6 and secondary melt are injected cold sprue 5 and connected
It connects, the other end of 2 runners 6 is connect with type chamber 2, guarantees can smoothly enter into for melt.
Embodiment 3
On the basis of embodiment 1 or embodiment 2, this implementation additionally provides a kind of side that product is prepared using type chamber inserts
Method includes the following steps:
(1) isotactic polypropylene (iPP) that the trade mark is T30S is regard as a melt, by the molten of melt injecting unit
Melt plasticizing at 190 DEG C of melt after, via one injection unit nozzle under the injection pressure of 1000Bar, by a melt with
The injection speed injection temperature of 35ccm/s is in 80 DEG C of type chamber 2 and to be formed and short penetrate melt；
(2) it is injecting within the 3s after a melt, the high density polyethylene (HDPE) (HDPE) that the trade mark is 6098 is being used as secondary
Melt, after biphasic injection unit fusion plastification is at 200 DEG C of melt, via biphasic injection unit nozzle 1500Bar's
Under injection pressure, by the secondary melt of multiply simultaneously with the injection speed of 15ccm/s, by secondary melt inject cold sprue 5 with
Runner 6, and percolation melt is injected in injection type chamber 2 and formed by secondary melt injection gate 7, the secondary melt of multiply pushes
One time melt fills up type chamber 2, and penetrates a melt and enter secondary chamber 9 via the sluice way 8 of fishtail structure.
(3) when type chamber 2 and secondary chamber 9 all have been filled with melt, product is taken out after cooling pressure maintaining sizing, removes runner and secondary chamber
Final product is obtained after 9 condensates.
Embodiment 4
On the basis of embodiment 1 or embodiment 2, this implementation additionally provides a kind of side that product is prepared using type chamber inserts
Method includes the following steps:
(1) isotactic polypropylene (iPP) that the trade mark is T30S is regard as a melt, by the molten of melt injecting unit
Melt plasticizing at 200 DEG C of melt after, via one injection unit nozzle under the injection pressure of 1000Bar, by a melt with
The injection speed injection temperature of 35ccm/s is in 100 DEG C of type chamber 2 and to be formed and short penetrate melt；
(2) it is injecting within the 10s after a melt, the high density polyethylene (HDPE) (HDPE) that the trade mark is 6098 is being used as secondary
Melt, after biphasic injection unit fusion plastification is at 220 DEG C of melt, via biphasic injection unit nozzle 2299Bar's
Under injection pressure, by the secondary melt of multiply simultaneously with the injection speed of 38.4ccm/s, cold sprue 5 is injected by secondary melt
With runner 6, and by secondary melt injection gate 7 inject injection type chamber 2 in and form percolation melt, the secondary melt of multiply pushes away
A dynamic melt fills up type chamber 2, and penetrates a melt and enter secondary chamber 9 via the sluice way 8 of fishtail structure.
(3) when type chamber 2 and secondary chamber 9 all have been filled with melt, product is taken out after cooling pressure maintaining sizing, removes runner and secondary chamber
Final product is obtained after 9 condensates.
Embodiment 5
On the basis of embodiment 1 or embodiment 2, this implementation additionally provides a kind of side that product is prepared using type chamber inserts
Method includes the following steps:
(1) isotactic polypropylene (iPP) that the trade mark is T30S is regard as a melt, by the molten of melt injecting unit
Melt plasticizing at 195 DEG C of melt after, via one injection unit nozzle under the injection pressure of 1000Bar, by a melt with
The injection speed of 35ccm/s, which is injected in type chamber 2 at a temperature of 90 °C and formed, short penetrates melt；
(2) it is injecting within the 8s after a melt, the high density polyethylene (HDPE) (HDPE) that the trade mark is 6098 is being used as secondary
Melt, after biphasic injection unit fusion plastification is at 210 DEG C of melt, via biphasic injection unit nozzle 1800Bar's
Under injection pressure, by the secondary melt of multiply simultaneously with the injection speed of 32ccm/s, by secondary melt inject cold sprue 5 with
Runner 6, and percolation melt is injected in injection type chamber 2 and formed by secondary melt injection gate 7, the secondary melt of multiply pushes
One time melt fills up type chamber 2, and penetrates a melt and enter secondary chamber 9 via the sluice way 8 of fishtail structure.
(3) when type chamber 2 and secondary chamber 9 all have been filled with melt, product is taken out after cooling pressure maintaining sizing, removes runner and secondary chamber
Final product is obtained after 9 condensates.
Claims (10)
1. a kind of type chamber inserts, it is characterised in that: inject cold runner (3), secondary melt including insert bodies (1), a melt
Multiply injection mechanism, sluice way (8) and secondary chamber (9), melt injection cold runner (3) and secondary melt multiply injector
Structure is both connected to one end of type chamber (2), and the pair chamber (9) is connected to the other end of type chamber (2) by sluice way (8)；Described one
Secondary melt injection cold runner (3) is used to inject a melt to type chamber (2), and the secondary melt multiply injection mechanism is used for type
Chamber (2) injection multiply independently penetrates a melt and enters the secondary melt of secondary chamber (9) through sluice way (8).
2. a kind of type chamber inserts as described in claim 1, it is characterised in that: the secondary melt multiply injection mechanism includes two
Secondary melt injects cold sprue (5) and a plurality of runner (6), and one end of a plurality of runner (6) and secondary melt inject cold mainstream
Road (5) connection, the other end are connect with type chamber (2).
3. a kind of type chamber inserts as claimed in claim 2, it is characterised in that: the secondary melt injects cold sprue (5)
Diameter is greater than the diameter of runner (6).
4. a kind of type chamber inserts as described in claim 1, it is characterised in that: melt injection cold runner (3) passes through
One time melt injection gate (4) connect with type chamber (2), and the secondary melt multiply injection mechanism passes through secondary melt injection gate
(7) it is connect with type chamber (2).
5. a kind of type chamber inserts as claimed in claim 4, it is characterised in that: a melt injection gate (4) is in cylinder
Shape structure, the tapered structure of the secondary melt injection gate (7).
6. a kind of type chamber inserts as described in claim 1, it is characterised in that: the type chamber (2) is rectangular configuration, and type chamber
(2) thickness of 3.5~4.5 times of type chambers (2) of width.
7. a kind of type chamber inserts as described in claim 1, it is characterised in that: the sluice way (8) is fishtail structure.
8. a kind of utilize the method that type chamber inserts prepares product described in any one of claim 1~7, which is characterized in that packet
Include following steps:
(1) under the injection pressure of 1000-1850Bar, a melt is injected into temperature with the injection speed of 25~35ccm/s
In 80~100 DEG C of type chambers (2) and to be formed and short penetrating melt；
(2) it is injecting within the 10s after a melt, it is under the injection pressure of 1500~2299Bar, the secondary melt of multiply is same
When in the injection speed injection type chamber (2) of 15~38.4ccm/s and to form percolation melt, the secondary melt of multiply pushes primary molten
Body fills up type chamber (2), and penetrates a melt and enter secondary chamber (9) through sluice way (8)；
(3) finished product is obtained after cooling pressure maintaining sizing.
9. a kind of method for preparing product using type chamber inserts as claimed in claim 8, it is characterised in that: a melt
Fusion plastification is formed under conditions of 190~200 DEG C.
10. a kind of method for preparing product using type chamber inserts as claimed in claim 8, it is characterised in that: described secondary molten
Body fusion plastification under conditions of 200~220 DEG C is formed.
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| CN201710070341.XA CN106738662B (en) | 2017-02-09 | 2017-02-09 | Type chamber inserts and the method for preparing product using type chamber inserts |
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| CN201710070341.XA CN106738662B (en) | 2017-02-09 | 2017-02-09 | Type chamber inserts and the method for preparing product using type chamber inserts |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002011749A (en) * | 2000-04-28 | 2002-01-15 | Mitsubishi Engineering Plastics Corp | Method and apparatus for injection-molding molded article having hollow part |
| CN202656417U (en) * | 2012-05-31 | 2013-01-09 | 东莞广泽汽车饰件有限公司 | Double-color mold with improved glue inlet structure |
| CN105345996A (en) * | 2015-10-10 | 2016-02-24 | 四川大学 | Multi-melt multi-injection molding mold |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09131758A (en) * | 1995-11-09 | 1997-05-20 | Honda Motor Co Ltd | Manufacture of synthetic resin molding body |
| DE19802048C2 (en) * | 1998-01-21 | 2001-03-15 | Andreas Baudisch | Injection mold for the production of objects from various plastics |
| US6843954B2 (en) * | 2000-02-24 | 2005-01-18 | Conix Corporation | Injection molding techniques utilizing fluid channels |
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2017
- 2017-02-09 CN CN201710070341.XA patent/CN106738662B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002011749A (en) * | 2000-04-28 | 2002-01-15 | Mitsubishi Engineering Plastics Corp | Method and apparatus for injection-molding molded article having hollow part |
| CN202656417U (en) * | 2012-05-31 | 2013-01-09 | 东莞广泽汽车饰件有限公司 | Double-color mold with improved glue inlet structure |
| CN105345996A (en) * | 2015-10-10 | 2016-02-24 | 四川大学 | Multi-melt multi-injection molding mold |
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