CN207190129U

CN207190129U - Microvesicle injection moulding apparatus

Info

Publication number: CN207190129U
Application number: CN201720703338.2U
Authority: CN
Inventors: 白烨
Original assignee: 白烨
Current assignee: Ningbo Baishi Microbubble Injection Molding Technology Co., Ltd.
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2018-04-06
Anticipated expiration: 2027-06-16

Abstract

The utility model discloses a kind of microvesicle injection moulding apparatus, including being coaxially disposed, and inside has the Injection Section of mutual conduction cavity, batch mixing segment and injection section, sprue is provided with the cavity of mutual conduction, branch flow passage is arranged with connector cavity to the sprue projected in section cavity of batch mixing segment, the injection assembly with branch flow passage UNICOM is provided with the connector, the valve body for coordinating runner work is provided with the cavity of the mutual conduction, the present apparatus can guarantee that piece surface is consistent with common injection and the present apparatus can be added on conventional injection molding machine gun barrel head and microvesicle injection can be achieved, user being capable of unrestricted choice mode of operation, it is switched fast in common injection and microvesicle injection molding manner, to injection machine without requests for alternations, the original plasticizing capacity of injection machine is not sacrificed, it can switch on demand in same specification equipment；Corresponding different size injection machine, the present apparatus have the further advantage of microvesicle injection present mode simultaneously.

Description

Microvesicle injection moulding apparatus

Technical field

The present invention relates to plastic injection field, more particularly to a kind of microvesicle injection moulding apparatus.

Background technology

Microvesicle injection is by plastic injection molding process, adding supercritical fluid in the plastic, being allowed to homogeneously change.Then note Enter into mold cavity, because pressure declines suddenly, shooting flow, which is known from experience, is transformed into gaseous state, forms small gas in the plastic Bubble.This injection molding manner is referred to as microvesicle injection, and domestic microvesicle injection at present is using injection machine gun barrel perforate is passed through, to screw rod Supercritical fluid is injected after doing corresponding transformation.Realize that this technique must just carry out injection machine repacking accordingly or customization, and The original plasticizing capacity of injection machine, which must be sacrificed, to be realized, make the increase of repacking cost, the increase of Technique Popularizing difficulty.

By microvesicle injection can lightening material weight, shorten injection cycle, reduce equipment energy consumption, improve element precision, subtract Few part internal stress, but the product surface obtained easily ftractures, and directly affects the presentation quality of product, it is not blue or green by consumer Look at.

The content of the invention

The present invention is in view of the shortcomings of the prior art, provide a kind of compatibility by force, without reequiping injection machine with regard to that can complete microvesicle Injection, and the microvesicle injection moulding apparatus of the flawless product in surface can be obtained.

In order to solve the above technical problems, the present invention is addressed by the following technical programs：Microvesicle injection moulding apparatus, including it is same Axle is set, and the internal Injection Section with mutual conduction cavity, batch mixing segment and injection section, the first wife that the Injection Section is set Flange assembly is connected with injection machine gun barrel head, and the section that projects includes front flange assembly and batch mixing is injected into penetrating in mould Nozzle assembly, the batch mixing segment front end are connected by connector assembly with first wife's flange assembly, and the batch mixing segment end passes through front portion Flange assembly is connected with nozzle assembly, and the batch mixing segment includes body assembly and batch mixing assembly, and the body assembly, batch mixing are total Into and the cavity of front flange assembly in be provided with conventional runner and SCF runner, be provided with the body assembly with often The injection assembly of runner UNICOM is advised, the valve body for coordinating runner work, the mutual conduction are provided with the cavity of mutual conduction Cavity outside be provided with monitoring fluid state temperature sensor and pressure sensor and heater assembly.

In such scheme, it is preferred that the connector assembly is clamping hoop type structure, passes through connector assembly and interior hexagonal spiral shell Body assembly and first wife's flange assembly are attached by bolt, are easy to device Quick universal.

In such scheme, it is preferred that the miniature note for projecting assembly and including being internally provided with micropore alloy structure plunger Unit and drive device are moulded, micropore alloy structure plunger can discharge the gas formed because SCF incorporates on a small quantity, and not allow Fluid is by projecting the preferred oil cylinder of assembly as driving.

In such scheme, it is preferred that the plunger head is provided with breather plug, and ventilative and fluid can not pass through.

In such scheme, it is preferred that the valve body includes the charge valve in first wife's flange assembly cavity, and body is total It is divided into the reversal valve of conventional runner and SCF runner into cavity, and the needle-valve being arranged in front flange assembly cavity, provided with filling Air valve, in injection machine storing, after Common fluids fill conventional runner and project assembly, charge valve is opened injects big gun by SCF Tube inner chamber, fluid-mixing being mixed to form with fluid, needle-valve is in normally off, when fluid-mixing is projected by SCF runners, needle-valve The one-way cylinder pressure release of assembly, fluid-mixing open needle-valve by pressure itself, and by the setting of these valve bodies, user can be certainly By selection mode of operation, can be switched fast in common injection and microvesicle injection molding manner, and control Common fluids homogeneous with SFC The injection order of the fluid-mixing of change.

In such scheme, it is preferred that the temperature sensor includes the first temperature sensor being arranged on body assembly, The second temperature sensor that is arranged on micro-injection moulding unit, the three-temperature sensor being arranged on batch mixing assembly and setting In the 4th temperature sensor on front flange assembly, multiple temperature sensors are set, by the temperature control to Common fluids, Part in mold cavity is set to form membranous wall, so as to obtain surface and commonly be molded consistent part.

In such scheme, it is preferred that the pressure sensor is arranged on body assembly, and with being arranged at the total coelosis of body Internal reversal valve connection, pressure sensor can not only control fluid-mixing gas escape and piece surface shape caused by release of pressure Into bubble cracking, and can each active section of monitoring device sealing, when device leaks, energy the very first time locate in time Reason.

In such scheme, it is preferred that being provided with surface in the SCF runners has the streamline structure of bull forward-reverse spiral Batch mixing post, this structure causes batch mixing post surface to form a large amount of helicla flute points, utilizes molten plastic dynamic in injection Can, SCF can be made fully to be merged with plastics, improve the equiblibrium mass distribution of microvesicle.

In such scheme, it is preferred that the nozzle assembly is to be internally provided with the servo-actuated coaxial dual channel structure covered, center For SCF runners, it is connected with front flange assembly SCF runners, outer shroud is that always conventional runner is connected conventional runner with front flange.

The present invention compared with prior art, has the advantages that：The present apparatus uses dual channel structure, passes through multiple biographies Sensor carries out the control of temperature and pressure to the fluid in cavity, the injection assembly on adapting device, realizes in advance to mould type Chamber injects Common fluids, then is subsequently implanted into the fluid-mixing homogeneously changed with SFC, and injecting mold cavity in advance makes zero in mold cavity Part forms membranous wall, the bubble cracking for preventing fluid-mixing gas escape and piece surface caused by release of pressure from being formed, so as to ensure Piece surface is consistent with common injection；The present invention adds the present apparatus on conventional injection molding machine gun barrel head and microvesicle injection can be achieved, And user can unrestricted choice mode of operation, can be switched fast in common injection and microvesicle injection molding manner, to injection machine without Requests for alternations, the original plasticizing capacity of injection machine is not sacrificed, and can switch on demand in same specification equipment；Corresponding different size note Molding machine, present apparatus physical dimension is corresponding to be changed, and the present apparatus has the further advantage of microvesicle injection present mode simultaneously, is adapted to It is widely applied.

Brief description of the drawings

Fig. 1, Structure explosion diagram of the present invention.

Fig. 2, structure sectional view of the present invention 1.

C-C profiles in Fig. 3, Fig. 2.

Fig. 4, structure sectional view of the present invention 2.

Fig. 5, structure of reversing valve schematic diagram of the present invention.

Embodiment

The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.

Referring to shown in Fig. 1 to Fig. 5, microvesicle injection moulding apparatus, including be coaxially disposed, and internal there is mutual conduction cavity Injection Section, batch mixing segment and injection section, first wife's flange assembly 1 that the Injection Section is set is connected with injection machine gun barrel head, described Projecting section includes front flange assembly 5 and the nozzle assembly 6 for injecting batch mixing in mould, and the batch mixing segment front end passes through connection Device assembly 2 is connected with first wife's flange assembly 1, and the batch mixing segment end is connected by front flange assembly 5 with nozzle assembly 6, its It is characterised by, the batch mixing segment includes body assembly 3 and batch mixing assembly 4, the body assembly 3, batch mixing assembly 4 and front portion Conventional runner 71 and SCF runners 72 are provided with the cavity of flange assembly 5, is provided with the body assembly 3 and normal flow The injection assembly 34 of the UNICOM of road 71, the valve body for coordinating runner work, the mutual conduction are provided with the cavity of mutual conduction Cavity outside be provided with monitoring fluid state temperature sensor and pressure sensor and heater assembly.

The connector assembly 2 is clamping hoop type structure, by connector assembly 2 and hexagon socket head cap screw 22 by body assembly 3 It is attached with first wife's flange assembly 1, the injection assembly 34 includes being internally provided with the miniature of micropore alloy structure plunger 342 Injection molding unit and drive device 344, and gun barrel 341, displacement transducer 345, the head of plunger 342 are provided with breather plug 343, the valve body includes the charge valve 11 in the cavity of first wife's flange assembly 1, and the cavity of body assembly 3 is divided into conventional runner The reversal valve 32 of 71 and SCF runners 72, and the needle-valve 52 being arranged in the cavity of front flange assembly 5, reversal valve 32 pass through pendulum Dynamic hydraulic cylinder assembly 33 controls, and realizes in good time break-make routine runner 71 and SCF runners 72, and the reversal valve 32 includes valve element 321, valve Set 322, copper packing 328, the dish-like shell fragment 326 of pad 327, nut 325, the needle-valve 52 include valve body 521, lever 522, pushing block 523 and one-way cylinder 524；The temperature sensor includes the first temperature sensor 81 being arranged on body assembly 3, sets In the second temperature sensor 82 on micro-injection moulding unit, the three-temperature sensor 83 being arranged on batch mixing assembly 4 and set The 4th temperature sensor 84 being placed on front flange assembly 5, the pressure sensor 9 are arranged on body assembly 3, and with setting The reversal valve 32 being placed in the cavity of body assembly 3 connects, and surface is provided with SCF runners 72 has the streamline of bull forward-reverse spiral The batch mixing post 42 of shape structure, the nozzle assembly 6 are the coaxial dual channel structure for being internally provided with servo-actuated set 61.

Before injection, subsystem connected with microvesicle injection moulding apparatus and each starts, and electric heater is heated to the melting of plastics requirement Temperature, injection machine is in can working condition；Charge valve 11 in microvesicle injection moulding apparatus is closed；Reversal valve 32 is by SCF The runner mouth of runner 72 is closed, and conventional runner 71 is opened, the closed mode of needle-valve 52；Molding machine starts storing, the screw back pressure of injection machine Back pressure more than micro-injection moulding unit inner plunger 342 is set, and fluid flows through reversal valve and flowed along conventional runner 71, treats conventional runner After 71 are full of, runner on-way resistance moves resistance after being more than plunger 342, now, promotes plunger 342 up, and go upward to first During setting height, charge valve 11 is opened, and gas mixes with plastic liquid, when plunger 342 rises to the second setting height, reversal valve 32 Rotation, conventional runner 71 is closed, open SCF runners 72, the fluid for being mixed with SFC is homogeneously changed mixed by batch mixing post 42, formation SFC Collaborate body, after fluid to be mixed is full of SCF runners 72, close needle-valve 52, injection machine continues storing, and it is homogeneous to continue injection SFC The fluid-mixing of change, until screw in injection molding machine reaches setting position.

When injection starts, the oil cylinder for projecting the drive device 344 on assembly pulls plunger 342 to move down, and fluid is along normal flow Road 71 flows to nozzle assembly 6, is moved after promoting servo-actuated set 61, fluid is injected into mould by nozzle assembly 6, treats that plunger 342 will For fluid all after extrusion, the oil cylinder pressure release of the single-acting drive device 72 of needle-valve 52, injection machine starts injection, and fluid-mixing is injected In SCF runners 72, needle-valve 52 is opened, and fluid-mixing flows towards nozzle assembly 6, and promotes the servo-actuated reach of set 61 so that normal flow The runner exit closing in road 71, fluid-mixing is through servo-actuated set 61 and injects mold cavity, and after mold cavity fills, needle-valve 52 closes Close, injection machine storing starts, and appropriate delay is set by PLC control system, and remaining fluid-mixing in SCF runners 72 is pressed into After mixing runner, reversal valve 32 closes SCF runners 72, and conventional runner 71 reopens, and into subsequent cycle, is molded in engineering, 8 heating components on injection moulding apparatus heat to the fluid in cavity, it is ensured certain mobility, can smoothly inject In mold cavity, 8 heating components are the primary heater H1 positioned at the hull outside of first wife's flange assembly 1, total positioned at connector Into the secondary heater H2 of 2 hull outsides；Positioned at body assembly 3 and the 3rd heater of the junction hull outside of batch mixing assembly 4 H3；The 4th heater H4 on the outside of the central enclosure of batch mixing assembly 4, positioned at batch mixing assembly 4 and the junction of front flange assembly 5 5th heater H5 of hull outside, positioned at the 6th heater H6 of the end hull outside of front flange assembly 5；It is total positioned at projecting Into the 7th upper heater H7 and the 8th heater H8.

By above-mentioned action, it can be achieved first to inject Common fluids in mold cavity, part is formed membranous wall, can be effective The bubble cracking for preventing fluid-mixing gas escape and piece surface caused by release of pressure from being formed, injects thereafter mixed flow fluid, makes The advantages of product microvesicle injecting products of acquisition, at the same product surface without cracking etc. microvesicle injecting products the defects of, be adapted to big face Product is promoted the use of.

Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims It is defined, any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement each fall within the present invention's Protection domain.

Claims

1. microvesicle injection moulding apparatus, including it is coaxially disposed, and the internal Injection Section with mutual conduction cavity, batch mixing segment and penetrates Go out section, first wife's flange assembly that the Injection Section is set（1）It is connected with injection machine gun barrel head, the injection section includes front flange Assembly（5）And the nozzle assembly for injecting batch mixing in mould（6）, the batch mixing segment front end passes through connector assembly（2）With original With flange assembly（1）Connection, the batch mixing segment end passes through front flange assembly（5）With nozzle assembly（6）Connection, its feature exist In the batch mixing segment includes body assembly（3）And batch mixing assembly（4）, the body assembly（3）, batch mixing assembly（4）It is and preceding Portion's flange assembly（5）Cavity in be provided with conventional runner（71）With SCF runners（72）, the body assembly（3）Upper setting Have and conventional runner（71）The injection assembly of UNICOM（34）, the valve body for coordinating runner work is provided with the cavity of mutual conduction, The temperature sensor and pressure sensor and heater assembly of monitoring fluid state are provided with outside the cavity of mutual conduction.

2. microvesicle injection moulding apparatus according to claim 1, it is characterised in that the connector assembly（2）For clamping hoop type knot Structure, pass through connector assembly（2）And hexagon socket head cap screw（22）By body assembly（3）With first wife's flange assembly（1）It is attached.

3. microvesicle injection moulding apparatus according to claim 1, it is characterised in that the injection assembly（34）Set including inside There is micropore alloy structure plunger（342）Micro-injection moulding unit and drive device（344）.

4. microvesicle injection moulding apparatus according to claim 3, it is characterised in that the plunger（342）Head is provided with ventilation Plug（343）.

5. microvesicle injection moulding apparatus according to claim 1, it is characterised in that the valve body includes being located at first wife's flange assembly （1）Charge valve in cavity（11）, by body assembly（3）Cavity is divided into conventional runner（71）With SCF runners（72）Reversal valve （32）, and it is arranged at front flange assembly（5）Needle-valve in cavity（52）.

6. microvesicle injection moulding apparatus according to claim 1, it is characterised in that the temperature sensor includes being arranged at body Assembly（3）On the first temperature sensor（81）, the second temperature sensor that is arranged on micro-injection moulding unit（82）, be arranged at Batch mixing assembly（4）On three-temperature sensor（83）And it is arranged at front flange assembly（5）On the 4th temperature sensor （84）.

7. microvesicle injection moulding apparatus according to claim 1, it is characterised in that the pressure sensor（9）It is arranged at body Assembly（3）On, and with being arranged at body assembly（3）Reversal valve in cavity（32）Connection.

8. microvesicle injection moulding apparatus according to claim 1, it is characterised in that the SCF runners（72）Inside it is provided with surface The batch mixing post of streamline structure with bull forward-reverse spiral（42）.

9. microvesicle injection moulding apparatus according to claim 1, it is characterised in that the nozzle assembly（6）To be internally provided with Servo-actuated set（61）Coaxial dual channel structure.