CN105415566A - Ultrasonic vibration micro-foaming injection moulding device and ultrasonic vibration micro-foaming injection moulding method for plastic inspection well - Google Patents
Ultrasonic vibration micro-foaming injection moulding device and ultrasonic vibration micro-foaming injection moulding method for plastic inspection well Download PDFInfo
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- CN105415566A CN105415566A CN201510965833.6A CN201510965833A CN105415566A CN 105415566 A CN105415566 A CN 105415566A CN 201510965833 A CN201510965833 A CN 201510965833A CN 105415566 A CN105415566 A CN 105415566A
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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
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
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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
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
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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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0039—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks intermixing the injected material front at the weld line, e.g. by applying vibrations to the melt front
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- 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 relates to an ultrasonic vibration micro-foaming injection moulding device and an ultrasonic vibration micro-foaming injection moulding method for a plastic inspection well, and relates to the field of injection moulding machining for plastic inspection wells. The ultrasonic vibration micro-foaming injection moulding device comprises a fixed die plate, a movable die plate, a die core and hot runner system, an ultrasonic vibration device and a control system, wherein die cores comprise a main die core and a side pulling core, and a die cavity is arranged among the die cores, the fixed die plate and the movable die plate. According to the invention, a cavitation foaming effect of ultrasonic vibration on plastic is utilized, the die cavity is filled with a plastic melt through injection moulding to reach 85-90% of the volume of the die cavity at first, and then the plastic melt in the die cavity is subjected to overall ultrasonic vibration and cavitation micro-foaming through the main die core provided with an ultrasonic vibration mechanism, thus micro-foaming injection moulding machining for the plastic inspection well is realized. The ultrasonic vibration micro-foaming injection moulding device disclosed by the invention is simple to operate, high in moulding accuracy, and capable of saving plastic raw materials by 10-15%, reducing an injection moulding pressure by 60-80%, saving energy, avoiding or reducing generation of weld marks, enhancing the product strength and prolonging the service life.
Description
Technical field
The present invention relates to working of plastics injection mo(u)lding manufacture field, be specially a kind of plastic inspection well ultrasonic vibration micro foaming injection moulding devices and methods therefor.
Background technology
Plastic inspection well is the important component part of municipal pipe network construction, is a kind of Green Product, society and economic worth higher, in recent years, domestic and international market demand was increasing, and development prospect is wide.The quality of plastic inspection well normally tens kilograms even up to a hundred kilograms, complex contour, size is large, Bulk plastic inspection shaft generally adopts traditional injection molding forming method, and the shaping plastic melt Fast Filling mold cavity needing high speed and high pressure could meet large discharge of traditional injection moulding, thus, the conventional injection mo(u)lding of plastic inspection well always Problems existing be: raw materials for plastics production consumption is large, energy consumption is high, complex process and Forming Quality control difficulty.
Because municipal pipe network construction construction and long-term all kinds of load-carrying vehicle roll the road conditions working environment passed through, plastic inspection well is all needed to have higher Forming Quality and mechanical strength, in order to improve mechanical strength, manufacturing enterprise is generally by increasing the reinforcement gusset of plastic inspection well wall thickness and interpolation One's name is legion, thus, Bulk plastic inspection shaft not only needs to increase raw materials consumption, and due to size large and complex-shaped, insufficient fill and the more weld bond of product surface are the insoluble key issues of plastic inspection well injection mo(u)lding always.At present, although manufacturing enterprise has carried out more technological improvement in System of Injection Moulding and Shooting Technique etc., but how to reduce the raw materials consumption of Bulk plastic inspection shaft, reduce energy resource consumption, improve products surface quality and mechanical strength, need to explore new method and new technology further.
In recent years, frothing injection is the new direction of plastics processing, frothing injection has the advantages such as the good and material consumption of dimensional accuracy is low, domestic and international researcher and technical staff have carried out a large amount of innovation researches and application in foam injection molding equipment and process etc., such as, the patent No.: 201010595524.1 disclose the preparation method that a kind of supercritical fluid control system carries out thermoplastic micro foaming injection pipe fitting, but this frothing injection needs complicated supercritical fluid control system; The patent No.: 200710026663.0 disclose one kind of preloading method chemical blowing high speed injection molding method, although the foaming of this chemical method is simple, the hole size of foaming is not easy to control, and product strength is lower; Number of patent application 201110356065.6 adopts polymer composite, and by adding the material such as blowing agent, blowing promotor in plastic raw materials, this produces foam and complete injection moulding in screw rod shearing plasticizing process, and bubbling efficiency is low.At present, frothing injection has been widely applied on the plastic products of various engineering fields, but respectively has its own the scope of application and condition restriction, and due to the moulding process particularity of plastic inspection well, frothing injection is also not yet applied to the injection mo(u)lding of Bulk plastic inspection shaft.
Summary of the invention
In order to solve the problem, the invention provides a kind of plastic inspection well ultrasonic vibration micro foaming injection moulding devices and methods therefor, in plastic inspection well injection molding process, by the ultrasonic vibration cavitation of mould ultrasonic vibration installation, plastic melt in mold cavity is carried out fretting map, improve plastic melt temperature and increase volume, plastic melt is impelled to flow in mold cavity and Fast Filling mold cavity, raw materials for plastics production are saved, reduce injection pressure, economize energy, avoids or reduces weld bond occurring, improve products machinery intensity.
For achieving the above object, concrete scheme of the present invention is:
A kind of plastic inspection well ultrasonic vibration micro foaming injection moulding device, comprise solid plate, moving platen, mold cores and TOP-TIP, mold cores comprises mould main core, core is taken out in side, mold cores is between solid plate and moving platen, it is adjacent with mould main core that core is taken out in side, mold cores and solid plate, mold cavity is provided with between moving platen, TOP-TIP is arranged on solid plate, also comprise ultrasonic vibration installation, control system, TOP-TIP comprises sprue, be arranged at the rotating pole changer on sprue, pole changer is provided with the through hole that can be communicated with sprue, runner upper port is provided with in the upper end of sprue, runner lower port is provided with in the lower end of sprue, runner upper port connects injection molding machine nozzle, runner lower port connecting mold die cavity, moving platen is provided with the ladder hole of through moving platen upper and lower end face, the lower gap of mould main core is matched with in the ladder hole of moving platen, ultrasonic vibration installation is provided with in the lower end of moving platen, the lower surface of mould main core contacts with ultrasonic vibration installation, control system and ultrasonic vibration installation, pole changer is control connection respectively.
The side of taking out core in side is provided with arcuation projection, the arcuation groove matched with arcuation projection is provided with in the side of mould main core, arcuation is protruding is 0.03mm to 0.05mm with the fit clearance of arcuation groove, and the lower end of mould main core and the fit clearance of moving platen ladder hole are 0.02mm to 0.03mm.
Solid plate is provided with cavity, and TOP-TIP also comprises the sprue bush be embedded in solid plate cavity, is arranged on the heater of the outer ledge of sprue bush, and sprue is arranged on the center of sprue bush, and sprue is taper circular hole.
Ladder hole comprises the first through hole, the second through hole that aperture reduces successively from top to bottom, and the lower gap of mould main core is matched with the second through hole.
Pole changer is ball valve or cylinder valve.
Adopt the injection molding forming method of plastic inspection well ultrasonic vibration micro foaming injection moulding device, comprise injection moulding and two stages of fretting map, be first injection moulding, injection moulding comprises the following steps:
(1) prepare before, first carrying out injection moulding, carry out injection machine plasticizing, according to the requirement of plastic inspection well injection molding process, raw materials for plastics production are in injection machine plasticizing process or before plasticizing, the a certain proportion of expansion type core of Homogeneous phase mixing, 0.1 ~ 1% proportioning mixed foaming type nuclear material and raw materials for plastics production in proportion, after plasticizing, raw materials for plastics production and the plasticizing of expansion type nuclear material are plastic melt.
(2), calculate and arrange injection time and the injection pressure of plastic melt filling mold cavity volume 85% ~ 90%; According to ultrasonic vibration micro foaming injection moulding technological requirement, set the specific works parameter of pole changer and ultrasonic vibration installation by control system.
(3), after injection machine completes plasticizing, injection machine starts injection moulding, pole changer operating position is set as opening sprue, plastic melt filling mold cavity, until melt filling is to 85 ~ 90% of mold cavity volume, injection machine stops feed, is set as pole changer operating position closing sprue.
Then be fretting map, fretting map comprises the following steps:
(1), ultrasonic vibration installation is started, ultrasonic vibration installation sends the ultrasonic wave of vertical and horizontal vibration, ul-trasonic irradiation is in mould main core, mould main core is vibrated, the plastic melt of ul-trasonic irradiation in mold cavity is made its fretting map by mould main core, after the plastic melt volumetric expansion of fretting map is also filled with mold cavity completely, ultrasonic vibration installation quits work.
(2), after injection molding apparatus cooling, plastic part is taken off in die sinking.
Expansion type core is powder, and particle diameters is 1 micron to 100 microns, and dusty material is calcium carbonate or quartz.
The microporous bubble diameter of the plastic melt of fretting map is 1 micron to 500 microns.
The ultrasonic parameters that ultrasonic vibration installation applies plastic melt by mould main core is: amplitude is 10 microns to 20 microns, vibration frequency 20 ~ 30KHz, sound pressure amplitude 1.0 ~ 2.0MPa, time of vibration 1 to 10 minute.
Arcuation fit clearance that is protruding and arcuation groove is less than the plastics overflow edge value of plastic inspection well, is greater than the vibration amplitude of mould main core, is namely greater than ultrasonic amplitude.
Pole changer of the present invention is provided with through hole, when plastic melt injection moulding filling mold cavity, pole changer is opened, pole changer through hole is communicated with TOP-TIP sprue and mold cavity, when ultrasonic vibration is foamed, pole changer cuts out, and block the sprue between injection molding machine nozzle and mold cavity, pole changer is controlled by control system.Mould main core lower surface connects ultrasonic vibration installation.
Expansion type core is powder, and particle diameter is 1 micron to 100 microns, and material can be calcium carbonate, quartz or other dusty materials, and expansion type core proportion is 0.1 ~ 1%.
In mold cavity, produce ultrasonic wave, namely produced the ultrasonic wave of vertical and horizontal vibration by ultrasonic vibration installation, ultrasonic vibration installation passes through mould main core by ul-trasonic irradiation in plastic melt, and whole forming process is divided into injection moulding and two stages of fretting map.In injection moulding stowing operation, when plastic melt is fills up to 85% ~ 90% of mold cavity volume, injection machine stops feed, and pole changer cuts out the runner between injection molding machine nozzle and mold cavity, ultrasonic vibration installation is started working, mould main core by ul-trasonic irradiation in plastic melt.Ultrasonic foam theory is that expansion type nuclear particle rubs at plastic melt internal vibration, expansion type is checked melt vibration friction and is produced the very hot high temperature of micro-point, the very hot high temperature of micro-point impels the circumnuclear melt of expansion type to form microporous bubble fast, and microporous bubble diameter is that some tens of pm is to hundreds of micron.After the plastic melt volumetric expansion of fretting map is also filled with die cavity completely, ultrasonic vibration installation quits work.After mold cools down, plastic part is taken off in die sinking.Pole changer and ultrasonic vibration installation control work by control system.
The present invention has following good effect:
1. the present invention carries out overall ultrasonic vibration effect by the ultrasonic vibration installation of mould main core to the plastic melt in mold cavity, ultrasonic vibration can Quick height plastics melt temperature, and the plastic melt in mold cavity is carried out quick integral fretting map, impel plastic melt Fast Filling mold cavity under the effect of fretting map self bulbs of pressure.
2. carry out in overall fretting map process at plastic melt, higher melt temperature can reduce the weld bond of melt meet in die cavity, and, in melt, the fretting map of meet further obviates the formation in cold front face, thus, eliminate weld bond, enhance products machinery intensity, and compare common injection molding part, the microbubble void structure of goods inside can improve mechanical strength.
3., owing to only needing 85% ~ 90% of melt filling mold cavity volume in injection moulding process, thus can reduce raw materials for plastics production 10% ~ 15%.Compare common injection moulding, conventional injection pressure 60 ~ 80% can be reduced, and plastic melt fretting map self expands, and does not need dwell pressure, has saved the energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention when ultrasonic vibration foaming.
Fig. 2 is the structural representation of the present invention at injection moulding front steering switch opens sprue.
Fig. 3 is the structural representation of plastic inspection well.
Fig. 4 is the structural representation that core is taken out in side.
Fig. 5 is the structural representation of mould main core.
In figure: core 7, arcuation protruding 7-1, moving platen 8, ladder hole 8-1, the first through hole 8-1-1, the second through hole 8-1-2, ultrasonic vibration installation 9, control system 10, mold cavity 11 are taken out in sprue bush 1, sprue 1-1, runner upper port 1-1-1, runner lower port 1-1-2, heater 2, pole changer 3, through hole 3-1, plastic inspection well 4, solid plate 5, cavity 5-1, mould main core 6, arcuation groove 6-1, side.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment 1: see accompanying drawing 1 ~ accompanying drawing 5, a kind of plastic inspection well ultrasonic vibration micro foaming injection moulding device, comprise solid plate 5, moving platen 8, mold cores and TOP-TIP, ultrasonic vibration installation 9, control system 10, mold cores comprises mould main core 6, core 7 is taken out in side, mold cores is between solid plate 5 and moving platen 8, it is adjacent with mould main core 6 that core 7 is taken out in side, mold cores and solid plate 5, mold cavity 11 is provided with between moving platen 8, TOP-TIP is arranged on solid plate 5, solid plate 5 is provided with cavity 5-1, TOP-TIP comprises the sprue bush 1 be embedded in the cavity 5-1 of solid plate 5, be arranged on the heater 2 of the outer ledge of sprue bush 1, sprue 1-1, be arranged at the rotating pole changer 3 on sprue 1-1, sprue 1-1 is arranged on the center of sprue bush 1, sprue 1-1 is taper circular hole.Pole changer 3 is provided with the through hole 3-1 that can be communicated with sprue 1-1, runner upper port 1-1-1 is provided with in the upper end of sprue 1-1, runner lower port 1-1-2 is provided with in the lower end of sprue 1-1, runner upper port 1-1-1 connects injection molding machine nozzle, runner lower port 1-1-2 connecting mold die cavity 11, heater 2 is thermocouple, controls work by control system 10.
Moving platen 8 is provided with the ladder hole 8-1 of through moving platen 8 upper and lower end face, ladder hole 8-1 comprises the first through hole 8-1-1, the second through hole 8-1-2 that aperture reduces successively from top to bottom, the lower gap of mould main core 6 is matched with the second through hole 8-1-2, and fit clearance is 0.02mm.Be provided with ultrasonic vibration installation 9 in the lower end of moving platen 8, the lower surface of mould main core 6 contacts with ultrasonic vibration installation 9, control system 10 and ultrasonic vibration installation 9, pole changer 3 control connection respectively.
The side of taking out core 7 in side is provided with the protruding 7-1 of arcuation, is provided with the arcuation groove 6-1 that 7-1 protruding with arcuation matches in the side of mould main core 6, and the fit clearance of the protruding 7-1 and arcuation groove 6-1 of the present embodiment arcuation is 0.04mm.
Pole changer 3 is ball valve.
Adopt the injection molding forming method of plastic inspection well ultrasonic vibration micro foaming injection moulding device, comprise injection moulding and two stages of fretting map, be first injection moulding, injection moulding comprises the following steps:
(1) prepare before, first carrying out injection moulding, carry out injection machine plasticizing, according to the injection molding process requirement of plastic inspection well 4, raw materials for plastics production are in injection machine plasticizing process or before plasticizing, the a certain proportion of expansion type core of Homogeneous phase mixing, 0.2% proportioning mixed foaming type nuclear material and raw materials for plastics production in proportion, after plasticizing, raw materials for plastics production and the plasticizing of expansion type nuclear material are plastic melt.
(2), calculate and arrange injection time and the injection pressure of plastic melt filling mold cavity 11 volume 85% ~ 90%; According to ultrasonic vibration micro foaming injection moulding technological requirement, set the specific works parameter of pole changer 3 and ultrasonic vibration installation 9 by control system 10.
(3), after injection machine completes plasticizing, injection machine starts injection moulding, pole changer 3 operating position is set as opening sprue 1-1, plastic melt filling mold cavity 11, until melt filling is to 85 ~ 90% of mold cavity 11 volume, injection machine stops feed, is set as pole changer 3 operating position closing sprue 1-1.
Then be fretting map, fretting map comprises the following steps:
(1), ultrasonic vibration installation 9 is started, ultrasonic vibration installation 9 sends the ultrasonic wave of vertical and horizontal vibration, ul-trasonic irradiation is in mould main core 6, mould main core 6 is vibrated, the plastic melt of ul-trasonic irradiation in mold cavity 11 is made its fretting map by mould main core 6, after the plastic melt volumetric expansion of fretting map is also filled with mold cavity 11 completely, ultrasonic vibration installation 9 quits work.
(2), after injection molding apparatus cooling, plastic part plastic inspection well 4 is taken off in die sinking.
Expansion type core is powder, and particle diameters is 20 microns, and the present embodiment dusty material is calcium carbonate.
The microporous bubble diameter of the plastic melt of fretting map is 10 microns to 200 microns.
The ultrasonic parameters that ultrasonic vibration installation 9 applies plastic melt by mould main core 6 is: amplitude is 10 microns, vibration frequency 25KHz, sound pressure amplitude 1.5MPa, time of vibration 2 minutes.
The fit clearance of the protruding 7-1 and arcuation groove 6-1 of arcuation is less than the plastics overflow edge value of plastic inspection well 40, is greater than the vibration amplitude of mould main core 6.
Embodiment 2: see accompanying drawing 1 ~ accompanying drawing 5, a kind of plastic inspection well ultrasonic vibration micro foaming injection moulding device, the fit clearance that the protruding 7-1 of arcuation of core 7 and the arcuation groove 6-1 of mould main core 6 are taken out in the present embodiment side is 0.05mm; The lower gap of mould main core 6 is matched with the second through hole 8-1-2 of ladder hole 8-1 on moving platen 8, and fit clearance is 0.03mm; Pole changer 3 is cylinder valve.All the other structures are all identical with embodiment 1.
Adopt the injection molding forming method of plastic inspection well ultrasonic vibration micro foaming injection moulding device, comprise injection moulding and two stages of fretting map, be first injection moulding, injection moulding comprises the following steps:
(1) prepare before, first carrying out injection moulding, carry out injection machine plasticizing, according to the injection molding process requirement of plastic inspection well 4, raw materials for plastics production are in injection machine plasticizing process or before plasticizing, the a certain proportion of expansion type core of Homogeneous phase mixing, 0.6% proportioning mixed foaming type nuclear material and raw materials for plastics production in proportion, after plasticizing, raw materials for plastics production and the plasticizing of expansion type nuclear material are plastic melt.
(2), calculate and arrange injection time and the injection pressure of plastic melt filling mold cavity 11 volume 85% ~ 90%; According to ultrasonic vibration micro foaming injection moulding technological requirement, set the specific works parameter of pole changer 3 and ultrasonic vibration installation 9 by control system 10.
(3), after injection machine completes plasticizing, injection machine starts injection moulding, pole changer 3 operating position is set as opening sprue 1-1, plastic melt filling mold cavity 11, until melt filling is to 85 ~ 90% of mold cavity 11 volume, injection machine stops feed, is set as pole changer 3 operating position closing sprue 1-1.
Then be fretting map, fretting map comprises the following steps:
(1), ultrasonic vibration installation 9 is started, ultrasonic vibration installation 9 sends the ultrasonic wave of vertical and horizontal vibration, ul-trasonic irradiation is in mould main core 6, mould main core 6 is vibrated, the plastic melt of ul-trasonic irradiation in mold cavity 11 is made its fretting map by mould main core 6, after the plastic melt volumetric expansion of fretting map is also filled with mold cavity 11 completely, ultrasonic vibration installation 9 quits work.
(2), after injection molding apparatus cooling, plastic part plastic inspection well 4 is taken off in die sinking.
Expansion type core is powder, and particle diameters is 60 microns, and the present embodiment dusty material is calcium carbonate.
The microporous bubble diameter of the plastic melt of fretting map is 50 microns to 300 microns.
The ultrasonic parameters that ultrasonic vibration installation 9 applies plastic melt by mould main core 6 is: amplitude is 15 microns, vibration frequency 28KHz, sound pressure amplitude 1.8MPa, time of vibration 5 minutes.
The fit clearance of the protruding 7-1 and arcuation groove 6-1 of arcuation is less than the plastics overflow edge value of plastic inspection well 40, is greater than the vibration amplitude of mould main core 6.
Claims (10)
1. a plastic inspection well ultrasonic vibration micro foaming injection moulding device, comprise solid plate, moving platen, mold cores and TOP-TIP, mold cores comprises mould main core, core is taken out in side, mold cores is between solid plate and moving platen, it is adjacent with mould main core that core is taken out in side, mold cores and solid plate, mold cavity is provided with between moving platen, TOP-TIP is arranged on solid plate, it is characterized in that: also comprise ultrasonic vibration installation, control system, TOP-TIP comprises sprue, be arranged at the rotating pole changer on sprue, pole changer is provided with the through hole that can be communicated with sprue, runner upper port is provided with in the upper end of sprue, runner lower port is provided with in the lower end of sprue, runner upper port connects injection molding machine nozzle, runner lower port connecting mold die cavity, moving platen is provided with the ladder hole of through moving platen upper and lower end face, the lower gap of mould main core is matched with in the ladder hole of moving platen, ultrasonic vibration installation is provided with in the lower end of moving platen, the lower surface of mould main core contacts with ultrasonic vibration installation, control system and ultrasonic vibration installation, pole changer is control connection respectively.
2. plastic inspection well ultrasonic vibration micro foaming injection moulding device according to claim 1, it is characterized in that: the side of taking out core in side is provided with arcuation projection, the arcuation groove matched with arcuation projection is provided with in the side of mould main core, arcuation is protruding is 0.03mm to 0.05mm with the fit clearance of arcuation groove, and the lower end of mould main core and the fit clearance of moving platen ladder hole are 0.02mm to 0.03mm.
3. plastic inspection well ultrasonic vibration micro foaming injection moulding device according to claim 1 and 2, it is characterized in that: on solid plate, be provided with cavity, TOP-TIP also comprises the sprue bush be embedded in solid plate cavity, is arranged on the heater of the outer ledge of sprue bush, sprue is arranged on the center of sprue bush, and sprue is taper circular hole.
4. plastic inspection well ultrasonic vibration micro foaming injection moulding device according to claim 1 and 2, it is characterized in that: ladder hole comprises the first through hole, the second through hole that aperture reduces successively from top to bottom, and the lower gap of mould main core is matched with the second through hole.
5. plastic inspection well ultrasonic vibration micro foaming injection moulding device according to claim 1 and 2, is characterized in that: pole changer is ball valve or cylinder valve.
6. adopt the injection molding forming method of plastic inspection well ultrasonic vibration micro foaming injection moulding device as claimed in claim 2, it is characterized in that: comprise injection moulding and two stages of fretting map, be first injection moulding, injection moulding comprises the following steps:
(1) prepare before, first carrying out injection moulding, carry out injection machine plasticizing, according to the requirement of plastic inspection well injection molding process, raw materials for plastics production are in injection machine plasticizing process or before plasticizing, the a certain proportion of expansion type core of Homogeneous phase mixing, 0.1 ~ 1% proportioning mixed foaming type nuclear material and raw materials for plastics production in proportion, after plasticizing, raw materials for plastics production and the plasticizing of expansion type nuclear material are plastic melt;
(2), calculate and arrange injection time and the injection pressure of plastic melt filling mold cavity volume 85% ~ 90%; According to ultrasonic vibration micro foaming injection moulding technological requirement, set the specific works parameter of pole changer and ultrasonic vibration installation by control system;
(3), after injection machine completes plasticizing, injection machine starts injection moulding, pole changer operating position is set as opening sprue, plastic melt filling mold cavity, until melt filling is to 85 ~ 90% of mold cavity volume, injection machine stops feed, is set as pole changer operating position closing sprue;
Then be fretting map, fretting map comprises the following steps:
(1), ultrasonic vibration installation is started, ultrasonic vibration installation sends the ultrasonic wave of vertical and horizontal vibration, ul-trasonic irradiation is in mould main core, mould main core is vibrated, the plastic melt of ul-trasonic irradiation in mold cavity is made its fretting map by mould main core, after the plastic melt volumetric expansion of fretting map is also filled with mold cavity completely, ultrasonic vibration installation quits work;
(2), after injection molding apparatus cooling, plastic part is taken off in die sinking.
7. injection molding forming method according to claim 6, is characterized in that: expansion type core is powder, and particle diameters is 1 micron to 100 microns, and dusty material is calcium carbonate or quartz.
8. the injection molding forming method according to claim 6 or 7, is characterized in that: the microporous bubble diameter of the plastic melt of fretting map is 1 micron to 500 microns.
9. injection molding forming method according to claim 8, it is characterized in that: the ultrasonic parameters that ultrasonic vibration installation applies plastic melt by mould main core is: amplitude is 10 microns to 20 microns, vibration frequency 20 ~ 30KHz, sound pressure amplitude 1.0 ~ 2.0MPa, time of vibration 1 to 10 minute.
10. injection molding forming method according to claim 9, is characterized in that: arcuation fit clearance that is protruding and arcuation groove is less than the plastics overflow edge value of plastic inspection well, is greater than the vibration amplitude of mould main core.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626260A (en) * | 2017-02-17 | 2017-05-10 | 常州信息职业技术学院 | Laminated hot runner pouring device for plastic inspection well seat injection mold |
| CN114872284A (en) * | 2022-05-06 | 2022-08-09 | 郭长兴 | Injection molding system and injection molding method |
| CN115008712A (en) * | 2022-08-09 | 2022-09-06 | 南通倍佳机械科技有限公司 | Method for eliminating product bubbles in screw injection molding machine |
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| CN106626260A (en) * | 2017-02-17 | 2017-05-10 | 常州信息职业技术学院 | Laminated hot runner pouring device for plastic inspection well seat injection mold |
| CN106626260B (en) * | 2017-02-17 | 2018-10-02 | 常州信息职业技术学院 | Plastic inspection well seat injection mould laminated type hot flow path casting device |
| CN114872284A (en) * | 2022-05-06 | 2022-08-09 | 郭长兴 | Injection molding system and injection molding method |
| CN114872284B (en) * | 2022-05-06 | 2023-09-22 | 南宁东创智能制造有限公司 | Injection molding system and injection molding method |
| CN115008712A (en) * | 2022-08-09 | 2022-09-06 | 南通倍佳机械科技有限公司 | Method for eliminating product bubbles in screw injection molding machine |
| CN115008712B (en) * | 2022-08-09 | 2022-10-28 | 南通倍佳机械科技有限公司 | Method for eliminating product bubbles in screw injection molding machine |
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Effective date of registration: 20200630 Address after: 214000 Liangnan Community, Taihu Street, Binhu District, Wuxi City, Jiangsu Province Patentee after: Jiangsu Zhenglin Environmental Protection Technology Co., Ltd Address before: 213164 No. 22, Xin Xin Zhong Road, Wujin District, Jiangsu, Changzhou Patentee before: CHANGZHOU College OF INFORMATION TECHNOLOGY |