CN203496218U - Nozzle of injection molding machine - Google Patents
Nozzle of injection molding machine Download PDFInfo
- Publication number
- CN203496218U CN203496218U CN201320590857.4U CN201320590857U CN203496218U CN 203496218 U CN203496218 U CN 203496218U CN 201320590857 U CN201320590857 U CN 201320590857U CN 203496218 U CN203496218 U CN 203496218U
- Authority
- CN
- China
- Prior art keywords
- plunger
- nozzle
- motor
- pressure sensor
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a nozzle of an injection molding machine. The nozzle comprises a nozzle head (1), an injection cavity (2), a plunger (3), a bush (4), a sealing ring (5), an end cover (6), a connecting component (7), a ball nut (8), a ball screw rod (9), a transmission band (10), a motor (11), a pressure sensor (12), a controller (13) and an injection molding screw rod (14). The nozzle is characterized in that the plunger (3) is connected with the connecting component (7); the ball nut (8) is connected above the connecting component (7), is arranged on the ball screw rod (9) and vertically moves along with the rotation of the ball screw rod (9); the plunger (3) is radially inserted to the injection cavity (2); the pressure sensor (12) is arranged in the injection cavity (2) located between the plunger (3) and the screw rod (14); the controller (13) is electrically connected with the pressure sensor (12) and the motor (11). The nozzle is simple in structure, small in material resistance, convenient and precise in control and capable of detecting the pressure of a fluid in the injection cavity in real time.
Description
Technical field
The utility model belongs to injection mo(u)lding field, is a kind of injection molding machine nozzle that a kind of injectable runner is controlled concretely.
background technology
The nozzle of injection machine is the union piece between machine barrel and mould, and during injection moulding, under the effect of screw rod thrust, the plastics of melting inject the die cavity of mould by nozzle with very high flow velocity.The nozzle of injection machine mainly contains the nozzle of open-type nozzle, locked nozzle and special construction.Open type (through type) nozzle refers to that the passage of nozzle always is and is opening, there is no the valve body in order to close or to open, when machine barrel front end and nozzle temperature too high, or machine barrel front end storing is too much under high pressure conditions, just easily produce " salivation " phenomenon, make plastics at start injection not and under the unlimited present situation of mould, unexpectedly rob and be introduced into sprue entrance hardening under the cooling effect of template, and hinder melt to enter swimmingly die cavity.Locked nozzle is not when carrying out Injection filling, and the passage in its nozzle is closed, and only, when injection moulding, just the thimble in nozzle removed, then carried out injection moulding.Locked nozzle is divided into material and presses locking type, springlock closed form and controlled locking type.When material presses locking type nozzle to utilize preformed, the pressure of melt self promotes nozzle head and blocks the duct in nozzle, and to prevent " salivation ", but use is convenient not, the scope of application little (plastics of poor heat stability should not be used); Springlock closed form nozzle relies on spring force to realize locking, but the pressure loss is very large, feeding effect is little; Controlled locking type is mainly to adopt the moving switching of controlling needle-valve of liquid (or gas, electricity), but due to axially sealing of thimble for needle-valve, the runner in nozzle just need to get around thimble, and such runner is just more crooked and complicated, and resistance is large.
Summary of the invention
The technical problems to be solved in the utility model is, providing a kind of adopts radial-sealing and can automatically control the injection molding machine nozzle that fluid passage opens and closes when injection, can effectively prevent " salivation " phenomenon, and easy to use, the pressure loss is little, feeding is effective, and can show injection pressure.
Technical solution of the present utility model is, the injection molding machine nozzle of following structure is provided, comprise nozzle head, injecting cavity, plunger, lining, sealing ring, end cap, connecting elements, ball nut, ball screw, transport tape, motor, pressure sensor, controller, injection screw, on described plunger, be connected with connecting elements, described connecting elements top is connected with ball nut, described ball nut is configured in the rotation along with ball screw on ball screw and moves up and down, described plunger radial inserts in injecting cavity, described pressure sensor is arranged in the injecting cavity between plunger and screw rod, pressure sensor is high-temperature fusant pressure sensor, be adapted at using in plastic melt that high temperature viscosity is large, described controller is electrically connected to pressure sensor and motor.
Adopt after above structure compared to the prior art, adopt plunger radial to carry out locking and unlatching to the runner in nozzle, before injection moulding, nozzle flow channel is closed and blocked to plunger, effectively prevented " salivation " phenomenon, during injection moulding, plunger is opened, the fluid of melting can enter nozzle mould of plastics is carried out to injection moulding, owing to adopting radial manner Control Nozzle to open and close, when plunger is opened, in plunger retraction nozzle wall, nozzle flow channel is opened completely, can not produce resistance to the fluid of melting, the pressure loss is little, and feeding is effective; Adopts pressure sensor, the pressure when pressure sensor detects injection, sends signal to controller, and now plunger is opened, and when material fused deposition state, injecting cavity is closed, and can realize according to injection technique injecting cavity is carried out to automatic blocking and unlatching.Meanwhile, it can measure plastics pressure in the nozzle of injection machine in injection process, with this, judges whether injection pressure meets the requirements.Adopt ball screw and nut to control moving up and down of plunger, it controls simple, convenient, accurate.
As improvement, described plunger is disposed with supporting with it end cap, sealing ring and lining from top to bottom, facilitates plunger dismounting, and fused materials is sealed, and prevents from revealing.
As improvement, described ball screw is connected with motor by conveyer belt.
As improvement, described controller connecting motor, controls rotating speed and the rotating of motor, can realize closing and open function of plunger, and regulates the speed of closing unlatching.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the utility model injection molding machine nozzle.
Shown in figure: 1, nozzle head, 2, injecting cavity, 3, plunger, 4, lining, 5, sealing ring, 6, end cap, 7, connecting elements, 8, ball nut, 9, ball screw, 10, transport tape, youngster, motor, 12, pressure sensor, 13, controller, 14, injection screw.
The specific embodiment:
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
As shown in the figure, injection molding machine nozzle of the present utility model, comprise nozzle head 1, injecting cavity 2, plunger 3, lining 4, sealing ring 5, end cap 6, connecting elements 7, ball nut 8, ball screw 9, transport tape 10, motor 11, pressure sensor 12, controller 13, injection screw 14, on described plunger 3, be connected with connecting elements 7, described connecting elements 7 tops are connected with ball nut 8, described ball nut 8 is configured on ball screw 9, along with the rotation of ball screw 9 moves up and down, described plunger 3 radially inserts in injecting cavity 2, injecting cavity 2 is carried out to radial-sealing, the diameter of plunger 3 is a bit larger tham the diameter of injecting cavity 2, described pressure sensor 12 arranges in the injecting cavity 2 between plunger 3 and screw rod 14, described pressure sensor 12 is high-temperature fusant pressure sensor, can select the high-temperature fusant pressure sensor of PT112B model, the sensor of this model can be used for pressure measxurement and the control of the high temperature fluid medium of the equipment such as rubber and plastics machine.
Described controller 13 is electrically connected to pressure sensor 12 and motor 11.
Described plunger 3 is disposed with end cap 6, sealing ring 5 and the lining 4 matching with it from top to bottom.
Described ball screw 9 is connected with motor 11 by conveyer belt 10, is also provided with two belt wheels on described conveyer belt 10, and one of them belt wheel is connected with motor, and another belt wheel ball screw 9 is connected.
Described controller 13 connecting motors 11, control rotating speed and the rotating of motor 11, being set as plunger 3 when motor 11 forward moves upward, during motor 11 reversion, plunger 3 moves downward, and by controlling motor 11, control the rotating speed of ball screw 9 and the speed that ball nut 8 moves up and down, and then control the speed that plunger 3 moves up and down.
Operation principle of the present utility model is: initial state, and motor quits work, and plunger is in carrying out closed condition to injecting cavity.When plastic grain in heating cylinder, be heated and the effect of injection screw shearing force under fusing gradually, fused materials leading section at barrel under screw acting is constantly piled up, injection screw also ceaselessly rotates always and retreats under material effect.When the material accumulating in barrel reaches desired injection volume, complete injection measurement, injection screw stops operating, to be suitable for pressure and the speed of condition of molding, advance vertically, now, pressure sensor in injecting cavity detects another one pressure, send signal to controller, controller is controlled motor forward, motor drives ball screw to rotate by conveyer belt, ball screw rotates and drives ball nut to move upward, ball nut is built and is driven plunger to move upward by connection, thereby open injecting cavity, injection screw is discharged fused materials to be pushed into mould from nozzle head.Fused materials is drained, and enters into next circulation, and now, pressure sensor detects a pressure, sends this signal to controller, and the reversion of controller CD-ROM drive motor, moves downward by transport tape, ball screw, ball nut, connecting elements actuation plunger
,close injecting cavity, when plunger is closed injecting cavity completely, motor stops operating, and completes closing motion.
Employing the beneficial effects of the utility model are, when plunger is opened completely, injecting cavity is a passage of getting through completely, inject very smooth and easyly, and during injection, the pressure loss is very little.Whether adopt the utility model structure, components and parts are few, simple in structure, and it is accurately convenient by ball screw nut, to control, and by pressure sensor, can also detect in real time the pressure of injecting cavity inner fluid, normal to detect inject state.
Claims (4)
1. an injection molding machine nozzle, comprise nozzle head (1), injecting cavity (2), plunger (3), lining (4), sealing ring (5), end cap (6), connecting elements (7), ball nut (8), ball screw (9), transport tape (10), motor (11), pressure sensor (12), controller (13), injection screw (14), it is characterized in that: on described plunger (3), be connected with connecting elements (7), described connecting elements (7) top is connected with ball nut (8), described ball nut (8) is configured in the upper rotation along with ball screw (9) of ball screw (9) and moves up and down, described plunger (3) radially inserts in injecting cavity (2), described pressure sensor (12) is arranged in the injecting cavity (2) between plunger (3) and screw rod (14), described controller (13) is electrically connected to pressure sensor (12) and motor (11).
2. injection molding machine nozzle according to claim 1, is characterized in that: described plunger (3) is disposed with supporting with it end cap (6), sealing ring (5) and lining (4) from top to bottom.
3. injection molding machine nozzle according to claim 1, is characterized in that: described ball screw (9) is connected with motor (11) by conveyer belt (10).
4. injection molding machine nozzle according to claim 1, is characterized in that: described controller (13) is connected with motor (11), controls rotating speed and the rotating of motor (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590857.4U CN203496218U (en) | 2013-09-16 | 2013-09-16 | Nozzle of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590857.4U CN203496218U (en) | 2013-09-16 | 2013-09-16 | Nozzle of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203496218U true CN203496218U (en) | 2014-03-26 |
Family
ID=50327221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590857.4U Expired - Lifetime CN203496218U (en) | 2013-09-16 | 2013-09-16 | Nozzle of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203496218U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960138A (en) * | 2015-04-30 | 2015-10-07 | 苏州乔布注塑工业有限公司 | Injection molding device |
| CN106182602A (en) * | 2016-06-24 | 2016-12-07 | 宁波海特森精密机械制造有限公司 | A kind of injection machine shut-off nozzles |
| CN106514975A (en) * | 2016-11-21 | 2017-03-22 | 白烨 | SCF mixing device |
-
2013
- 2013-09-16 CN CN201320590857.4U patent/CN203496218U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960138A (en) * | 2015-04-30 | 2015-10-07 | 苏州乔布注塑工业有限公司 | Injection molding device |
| CN106182602A (en) * | 2016-06-24 | 2016-12-07 | 宁波海特森精密机械制造有限公司 | A kind of injection machine shut-off nozzles |
| CN106514975A (en) * | 2016-11-21 | 2017-03-22 | 白烨 | SCF mixing device |
| CN106514975B (en) * | 2016-11-21 | 2018-12-28 | 白烨 | A kind of SCF blender |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |