CN205326115U - A ray of formula preplasticizing volume pulsation injection moulding equipment - Google Patents
A ray of formula preplasticizing volume pulsation injection moulding equipment Download PDFInfo
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- CN205326115U CN205326115U CN201521020609.1U CN201521020609U CN205326115U CN 205326115 U CN205326115 U CN 205326115U CN 201521020609 U CN201521020609 U CN 201521020609U CN 205326115 U CN205326115 U CN 205326115U
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- injection
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Abstract
The utility model discloses a ray of formula preplasticizing volume pulsation injection moulding equipment utilizes fuse -element transition cover and the buffering storage compartment that the injection ram inner chamber formed, makes preplasticizer and injection device be the coaxial line and arranges, among the injection device, the fuse -element promotes to form axial space between non -return valve messenger's injection ram and the non -return valve, and periodic pulsation displacement is done to the injection ram, realizes storage, measurement, injection and the pulsation of pressurize in -process fuse -element volume periodicity. Its equipment includes that the coaxial line is preplasticizer and injection device that a ray of formula was arranged, and injection device includes injection hydro -cylinder, injection ram, injection ram crossbeam, non -return valve, injection head, measurement feed cylinder, nozzle holder and nozzle, fuse -element transition cover, injection ram, non -return valve, injection first, measurement feed cylinder, nozzle holder and the coaxial setting of nozzle, and injection ram one end sets up the injection ram crossbeam, and the injection ram crossbeam is connected with the injection hydro -cylinder. The utility model discloses realize the periodic pulsation of storage, measurement, injection and pressurize in -process fuse -element volume.
Description
Technical field
This utility model relates to polymer material molding processing technique field, particularly to a kind of one-line preplasticizing volume fluctuation injection forming equipment。
Background technology
Injection moulding is one of important method of Polymer moulding, and polymer injection forming machine is the main process apparatus of forming polymer。In conventional polymer injection forming machine, injection device is often screw arbor type injection device, process of injection molding includes material plasticizing, storing, injection filling mould, pressurize, the processes such as cooling and die sinking eject, when injection technique is specially material plasticizing injection screw limit rotate in a circumferential direction motion limit retreat, the material melt plastified is transported and is stored in the barrel space that screw head is formed due to screw retreats under screw rod rotary motion effect, after in barrel space, material melt reaches set amount, injection screw serves as plunger straight ahead under external force, material melt in barrel space is injected and enters in the mold cavity being connected with nozzle。But screw retreats during material plasticizing in this process, its effective length shortens, material plasticizing weak effect, the material not plastified in a large number in barrel participates in rectilinear motion during injection, and movement inertia is big, and frictional resistance becomes big, injection process energy consumption is made to increase, injection speed and injection position are difficult to accurate control, affect injected articles quality and mechanical property, limit the range of application of goods。And in injection molding process, introduce Vibrational force field, material plasticizing efficiency in injection moulding process can be improved, reduce viscosity and the elasticity of material melt, improve melt transfer efficiency, strengthen material mixing dispersion effect in plasticizing transport process, improve injection moulded products quality, shorten molding cycle。
For this, application number be 96108387.5 patent application disclose a kind of electromagnetic polymer dynamic injection forming method and device, the mode adopting electromagnetic energy conversion realizes injection screw axial vibration, but its structure is complicated, it is difficult to the screw arbor type injection device driven with conventional hydraulic combines。Application number be 200510033386.7 patent application disclose a kind of injector screw axial pulse displacement method and device, the mode disclosing a kind of hydraulic exciting on electromagnetic dynamic injection molding forming method and device basic realizes the axial pulse of injection screw, achieve the injection of screw arbor type axial pulse, but when the method can not overcome plasticizing, injection screw retreats the shortcoming that screw rod effective length shortens。And, screw rod, when carrying out axial pulse, drives motor that screw rod rotates and fixes other parts being connected with screw rod and carry out axial vibration all simultaneously, the quality of whole oscillating component is big, motional inertia is big, and natural frequency is low, drives the frequency of vibration of its vibration to be difficult to improve。For the one-line injector of small-sized screw, injection screw mass of system is less, and installation screw rod axial drive means can realize screw rod and carry out axial vibration within the scope of certain frequency；But for medium-and-large-sized injector, injection screw mass of system is big, and injection process motional inertia is big, natural frequency is low, so that after injection screw system is applied vibration, its frequency of vibration can not adjust in higher range, causes the yield of injected articles and the raising of quality to be restricted；On the other hand, installing the axial oscillation drive of screw rod in medium-and-large-sized injector, plant machinery structure is more complicated, and processing and manufacturing is relatively costly。Additionally, in the injector that application number is in the new blade plasticizing supporting injector of feeding device described in the patent application of 200810026054.X and application number is 201410206552.8 the plasticizing feeding device of the Novel eccentric rotor described in patent application is supporting, injection barrel and plunger can not be all one-line layout with corresponding plasticizing extrusion device axis collinear, cause whole plasticizing injecting device structure complicated, volume is bigger, therefore, new blade plasticizing feeding device and Novel eccentric rotor plasticizing feeding device are used for the injection forming equipment of plasticizing system and the one-line layout of injecting systems coaxial line and are extremely restricted。
As can be seen here, for existing screw arbor type study of pulsating injection molding device Problems existing, develop a kind of new one-line preplasticizing volume fluctuation injection moulding method and equipment is significant to Polymer Processing molding。
Utility model content
The purpose of this utility model is in that to overcome the deficiencies in the prior art, thering is provided a kind of one-line preplasticizing volume fluctuation injection forming equipment, this equipment has plasticizing system without axial displacement and provides continuously that stable melt, volume be little, the injection feature that energy consumption is low, injection ram quality is little and motional inertia is little, axial pulse frequency is high。
The technical solution of the utility model is: a kind of one-line preplasticizing volume fluctuation injection forming equipment, including preplasticizer and injection device, preplasticizer is connected with injection device by melt spacer shell, and the dead in line of preplasticizer and injection device, in one-line layout；
Injection device includes injection cylinder, injection ram, injection ram crossbeam, check ring, injection head, metering barrel, nozzle carrier and nozzle, melt spacer shell, injection ram, check ring, injection head, metering barrel, nozzle carrier and nozzle are coaxially disposed, injection ram one end arranges injection ram crossbeam, and injection ram crossbeam is connected with injection cylinder。
Described melt spacer shell coaxial package is in injection ram, and melt spacer shell end forms buffering storage compartment with injection ram inner chamber；Melt spacer shell and injection ram can relative motion, injection ram can do axial displacement, when therefore preplasticizer successively provides polymer melt to buffering storage compartment, cushions storage compartment's volume cyclically-varying with injection ram axial displacement；
Injection head and injection ram are fixedly and coaxially connected, and check ring coaxial package, outside injection head, forms the axial space of variable volume between injection ram and check ring；Wherein, check ring and injection head can relative motion, check ring and metering barrel can relative motion, check ring can do axial displacement and radial rotary motion；
Injection head front end arranges nozzle carrier, and nozzle is fixed on nozzle carrier front end, and metering barrel is located at injection ram periphery, and metering barrel front end is connected with nozzle carrier。
Having at least one injection ram distribution runner in described injection ram, one end of injection ram distribution runner connects with buffering storage compartment, and the other end connects with axial space, the injection ram distribution through injection ram of runner。
The inwall of described check ring is provided with helical flow path, and in storing process, check ring carries out axial displacement and radial rotary relative to metering barrel。
Being provided with measuring room in the middle part of described nozzle carrier, the front end of injection head is located in measuring room, is changed the volume of measuring room by the axial displacement of injection head。
Described injection ram is fixing with the middle part of injection ram crossbeam to be connected, and the two ends of injection ram crossbeam are respectively provided with injection cylinder。Injection ram makes axial cyclic pulse displacement under the pulse injection power effect that injection cylinder provides。
The panting action power of described injection cylinder is provided by hydraulic exciting device or elastic link exciting device。The change curve of panting action power F (t) t in time of injection ram is sine curve by injection cylinder。
Described preplasticizer is existing screw plasticizing apparatus, plunger type plasticator, vane type plasticizing apparatus or eccentric rotor plasticizing apparatus。
Can realizing a kind of one-line preplasticizing volume fluctuation injection moulding method by said apparatus, utilize the buffering storage compartment that in preplasticizer, melt spacer shell is formed with injection ram inner chamber in injection device, making preplasticizer and injection device is that coaxial line is arranged；In injection device, melt promotes check ring to make formation axial space between injection ram and check ring, does periodically pulsing displacement again through injection ram, it is achieved the periodically pulsing of melt volume in storing, metering, injection and pressure maintaining period。
The method specifically includes following steps:
(1) storing and metering: the melt from preplasticizer is entered buffering storage compartment by melt spacer shell, after then passing through injection ram distribution runner, check ring is promoted to carry out forward axial displacement, hence into axial space, and along the helical flow path flow forward in check ring, now melt pressure effect makes check ring do radial rotary motion so that the melt in axial space be in constantly update and without the state of buildup；Meanwhile, under the combined effect of melt pressure and pulsating force, injection ram pulsation retreats, and makes the volume of injection head front end measuring room increase to setting value；
(2) injection: injection ram is to previous crops axial displacement, and the axial end to injection ram with check ring is fitted, blocks melt backflow；Injection ram, check ring and injection head to previous crops axial displacement, promote the melt in measuring room to penetrate along nozzle as an integral pulse, and the simultaneous buffering storage compartment internal volume that measuring room internal volume reduces increases, and completes pulse injection process；
(3) pressurize: injection ram, check ring and injection head do as a whole panting action axially forward to keep cavity pressure, completes pulsation pressurize and the feeding of die cavity, simultaneously enters the next process-cycle。
This utility model, relative to prior art, has the advantages that
In this utility model, preplasticizer and injection device coaxial line are one-line layout, injection process preplasticizer is without axial displacement and provides melt continuously, injection device simple in construction, volume are little, energy consumption is low, injecting systems quality is little and motional inertia is little in injection, axial pulse frequency is high, production efficiency improves, and device fabrication cost is low。
Check ring inwall in this utility model is provided with helical flow path, and when polymer melt flows through helical flow path, melt pressure effect can make check ring do radial rotary motion, thus check ring is constantly updated with the melt in injection ram axial space, it is to avoid buildup is degraded。
In this utility model, except adopting injection cylinder to provide power, injection cylinder and exciting device also can being adopted to work together in injection device on injection ram, injection device pulse injection process is easy to control。This equipment injection ram quality is little and motional inertia is little, axial pulse frequency high。
Accompanying drawing explanation
Fig. 1 is the structural representation of this one-line preplasticizing volume fluctuation injection forming equipment。
Fig. 2 is the Section A-A view of Fig. 1。
Fig. 3 is the section B-B view of Fig. 1。
Fig. 4 is the C-C cross sectional view of Fig. 1。
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this。
Embodiment
A kind of one-line preplasticizing volume fluctuation injection forming equipment of the present embodiment, as shown in Figures 1 to 4, including preplasticizer 2 and injection device 12, preplasticizer is connected with injection device its structure by melt spacer shell 3, the dead in line of preplasticizer and injection device, in one-line layout；Injection device includes injection cylinder (the present embodiment includes injection cylinder 1 and hemostasis oil cylinder 7), injection ram 5, injection ram crossbeam 4, check ring 8, injection head 9, metering barrel 6, nozzle carrier 10 and nozzle 11, melt spacer shell, injection ram, check ring, injection head, metering barrel, nozzle carrier and nozzle are coaxially disposed, injection ram one end arranges injection ram crossbeam, and injection ram crossbeam is connected with injection cylinder。
Melt spacer shell coaxial package is in injection ram, and melt spacer shell end forms buffering storage compartment II with injection ram inner chamber, and the spacer shell runner I on melt spacer shell connects with buffering storage compartment；Melt spacer shell and injection ram can relative motion, injection ram can do axial displacement, when therefore preplasticizer successively provides polymer melt to buffering storage compartment, cushions storage compartment's volume cyclically-varying with injection ram axial displacement；Injection head and injection ram are fixedly and coaxially connected, check ring coaxial package is outside injection head, the axial space (not shown in Fig. 1, Fig. 1 is the state that injection ram moves to when end face is fitted with check ring) of variable volume is formed between injection ram and check ring；Wherein, check ring and injection head can relative motion, check ring and metering barrel can relative motion, check ring can do axial displacement and radial rotary motion；Injection head front end arranges nozzle carrier, and nozzle is fixed on nozzle carrier front end, and metering barrel is located at injection ram periphery, and metering barrel front end is connected with nozzle carrier。Having at least one injection ram distribution runner III in injection ram, one end of injection ram distribution runner connects with buffering storage compartment, and the other end connects with axial space, the injection ram distribution through injection ram of runner。The inwall of check ring is provided with helical flow path IV, and in storing process, check ring carries out axial displacement and radial rotary relative to metering barrel。Being provided with measuring room V in the middle part of nozzle carrier, the front end of injection head is located in measuring room, is changed the volume of measuring room by the axial displacement of injection head。Injection ram is fixing with the middle part of injection ram crossbeam to be connected, and the two ends of injection ram crossbeam are respectively provided with injection cylinder。Injection ram makes axial cyclic pulse displacement under the pulse injection power effect that injection cylinder provides。When storing and metering, under melt pressure effect, form axial space between check ring and injection ram end face, enter the helical flow path in check ring for melt；During injection, under the effect of injection cylinder, injection ram axial pulse moves, and injection ram is fitted (state as shown in Figure 1) with check ring axial end, blocks melt and refluxes from check ring helical flow path。
Wherein, the panting action power of injection cylinder is provided by hydraulic exciting device or elastic link exciting device。The change curve of panting action power F (t) t in time of injection ram is sine curve by injection cylinder。Preplasticizer can adopt existing screw plasticizing apparatus, plunger type plasticator, vane type plasticizing apparatus or eccentric rotor plasticizing apparatus。
Can realizing a kind of one-line preplasticizing volume fluctuation injection moulding method by said apparatus, utilize the buffering storage compartment that in preplasticizer, melt spacer shell is formed with injection ram inner chamber in injection device, making preplasticizer and injection device is that coaxial line is arranged；In injection device, melt promotes check ring to make formation axial space between injection ram and check ring, does periodically pulsing displacement again through injection ram, it is achieved the periodically pulsing of melt volume in storing, metering, injection and pressure maintaining period。
In the method, one-line preplasticizing volume fluctuation injection forming equipment is as follows in each stage work process situation:
(1) storing and metering:
Polymer melt enters buffering storage compartment II from preplasticizer by the spacer shell runner I of melt spacer shell, then pass through injection ram distribution runner III and promote check ring axially forwardly displacement, axial space is formed between injection ram and check ring, melt enters the axial space between injection ram and check ring and the helical flow path IV along check ring enters the measuring room V of injection head front end, when melt helical flow path IV along check ring flows, melt pressure effect makes check ring do radial rotary motion, make the melt in the axial space of injection ram and check ring be in continuous renewal and without buildup, simultaneously under polymer melt pressure and pulsating force combined effect, injection ram axial pulse retreats, the measuring room volume making injection head front end completes pulsation storing and metering process when increasing to setting value, setting value can be actually needed according to technique and be set。
(2) injection:
Injection ram under the pulse injection power effect of injection cylinder to previous crops axial displacement, injection ram and the laminating of check ring axial end, block the path of melt backflow, injection ram, check ring and injection head are made as a whole to previous crops pulsation axial displacement, melt in measuring room is promoted to penetrate along nozzle, the simultaneous buffering storage compartment volume that measuring room volume reduces increases, and completes pulse injection process。
(3) pressurize:
Injection cylinder continues to provide pulse injection power, makes injection ram, check ring and injection head make as a whole axially forward to keep cavity pressure, completes die cavity pulsation pressurize and feeding, simultaneously enters the next process-cycle。
As it has been described above, just can realize this utility model preferably, above-described embodiment is only preferred embodiment of the present utility model, is not used for limiting practical range of the present utility model；Namely all equalizations made according to this utility model content change and modify, and are all contained by this utility model claim scope required for protection。
Claims (8)
1. one-line preplasticizing volume fluctuation injection forming equipment, it is characterised in that include preplasticizer and injection device, preplasticizer is connected with injection device by melt spacer shell, and the dead in line of preplasticizer and injection device, in one-line layout；
Injection device includes injection cylinder, injection ram, injection ram crossbeam, check ring, injection head, metering barrel, nozzle carrier and nozzle, melt spacer shell, injection ram, check ring, injection head, metering barrel, nozzle carrier and nozzle are coaxially disposed, injection ram one end arranges injection ram crossbeam, and injection ram crossbeam is connected with injection cylinder。
2. one-line preplasticizing volume fluctuation injection forming equipment according to claim 1, it is characterised in that described melt spacer shell coaxial package is in injection ram, and melt spacer shell end forms buffering storage compartment with injection ram inner chamber；
Injection head and injection ram are fixedly and coaxially connected, and check ring coaxial package, outside injection head, forms the axial space of variable volume between injection ram and check ring；
Injection head front end arranges nozzle carrier, and nozzle is fixed on nozzle carrier front end, and metering barrel is located at injection ram periphery, and metering barrel front end is connected with nozzle carrier。
3. one-line preplasticizing volume fluctuation injection forming equipment according to claim 2, it is characterized in that, at least one injection ram distribution runner is had in described injection ram, one end of injection ram distribution runner connects with buffering storage compartment, the other end connects with axial space, the injection ram distribution through injection ram of runner。
4. one-line preplasticizing volume fluctuation injection forming equipment according to claim 2, it is characterised in that the inwall of described check ring is provided with helical flow path, in storing process, check ring carries out axial displacement and radial rotary relative to metering barrel。
5. one-line preplasticizing volume fluctuation injection forming equipment according to claim 2, it is characterised in that being provided with measuring room in the middle part of described nozzle carrier, the front end of injection head is located in measuring room, changes the volume of measuring room by the axial displacement of injection head。
6. one-line preplasticizing volume fluctuation injection forming equipment according to claim 1, it is characterised in that described injection ram is fixing with the middle part of injection ram crossbeam to be connected, and the two ends of injection ram crossbeam are respectively provided with injection cylinder。
7. one-line preplasticizing volume fluctuation injection forming equipment according to claim 1, it is characterised in that the panting action power of described injection cylinder is provided by hydraulic exciting device or elastic link exciting device。
8. one-line preplasticizing volume fluctuation injection forming equipment according to claim 1, it is characterised in that described preplasticizer is screw plasticizing apparatus, plunger type plasticator, vane type plasticizing apparatus or eccentric rotor plasticizing apparatus。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020609.1U CN205326115U (en) | 2015-12-10 | 2015-12-10 | A ray of formula preplasticizing volume pulsation injection moulding equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521020609.1U CN205326115U (en) | 2015-12-10 | 2015-12-10 | A ray of formula preplasticizing volume pulsation injection moulding equipment |
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| CN205326115U true CN205326115U (en) | 2016-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397972A (en) * | 2015-12-10 | 2016-03-16 | 华南理工大学 | One-line preplasticizing volume pulse injection forming method and equipment |
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- 2015-12-10 CN CN201521020609.1U patent/CN205326115U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397972A (en) * | 2015-12-10 | 2016-03-16 | 华南理工大学 | One-line preplasticizing volume pulse injection forming method and equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160622 Effective date of abandoning: 20171201 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160622 Effective date of abandoning: 20171201 |