CN106738746B - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
- Publication number
- CN106738746B CN106738746B CN201710071361.9A CN201710071361A CN106738746B CN 106738746 B CN106738746 B CN 106738746B CN 201710071361 A CN201710071361 A CN 201710071361A CN 106738746 B CN106738746 B CN 106738746B
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- Prior art keywords
- pump
- injection
- work
- cylinder body
- electric motor
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Classifications
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/16—Wash-fountains connected to the waste-pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C1/2302—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms the actuation force being transmitted to the plug via rigid elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/08—Fountains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1792—Machine parts driven by an electric motor, e.g. electric servomotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76658—Injection unit
- B29C2945/76692—Injection unit drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76866—Mould closing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an injection molding machine, which can realize high precision and energy saving by using an electric motor in an injection device and can also realize energy saving for a mold clamping device which needs to be pressed and clamped for a long time. An injection molding machine (11) performs operation of a screw (14) of an injection device (13) by electric motors (15, 16) and operation of a mold clamping cylinder (18) of a mold clamping device (17) by hydraulic pressure, the injection molding machine (11) comprising: a first pump (42) in which an electric motor (45) is rotated at all times to operate the mold clamping device (17); and a second pump (56) that rotates the electric motor to supply hydraulic oil when the mold clamping cylinder is actuated, and that stops or rotates the electric motor (55) at the lowest rotational speed when any of the actuators (15, 16, 24, 31, 35, 39) other than the mold clamping cylinder (18) is actuated.
Description
It is 2014 that the present invention, which is application No. is 201410006804.2, entitled " injection (mo(u)lding) machine ", the applying date,
The divisional application of 07 day 01 month patent application.
Technical field
The present invention relates to injection (mo(u)lding) machines, and the work of the screw rod of injection device is carried out using electric motor, and utilize
The hydraulic work to carry out the molding cylinder body of mold closing mechanism.
Background technique
In injection (mo(u)lding) machine, it is desirable that have both the miniaturization, cost effective each of accurate work, energy-saving, molding machine
Kind element.Particularly with the injection device for requiring accurate work, it is desirable to use servo motor makes screw rod work.In addition, closing
In horizontal mold closing mechanism, compared with the device for using elbow type mechanism, the overall length of molding machine can be more made using the device of molding cylinder body
Miniaturization.And the mold closing mechanism about large-scale injection (mo(u)lding) machine, if the required electric motor of driving is using universal product not
Enough, cost becomes very high, or exist not can corresponding electric motor the problems such as, in most cases using passing through liquid
Pressure carrys out the molding cylinder body of work.
As the device for coping with above-mentioned requirements, it can enumerate using electric motor and carry out the work of the screw rod of injection device
Make and carry out using hydraulic the injection (mo(u)lding) machine of the work of the molding cylinder body of mold closing mechanism, about this injection (mo(u)lding) machine,
Knowing has the device recorded in Fig. 8 of patent document 1.In patent document 1, used makes to need to carry out essence using servo motor
The molding cylinder body that the screw rod of the injection device of close work is worked and mold closing mechanism is made to work using hydraulic.In addition, conduct
Moving template mobile unit in mold closing mechanism uses the dress using hydraulic molding cylinder body using electric motor and clamping
It sets, it is known to device documented by patent document 2.In patent document 2, frequency converter or servo motor control are utilized to the work of pump
Revolving speed processed, to realize energy-saving.In addition, describing the following technical solution in patent document 3: making to inject using hydraulic
In the device of molding machine overall work, come the pump of work, and as needed stop the pump of a side using using multiple servo motors
Only etc..
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2012-20415 bulletin (0042, Fig. 8)
Patent document 2: Japanese Unexamined Patent Publication 2003-181895 bulletin (claim 1, Fig. 1)
Patent document 3: Japanese Unexamined Patent Publication 2007-69501 bulletin (claim 1, Fig. 1)
Summary of the invention
Problems to be solved by the invention
Really as described in Patent Document 1, the work that the screw rod of injection device is carried out using electric motor can be accurately
Control when being injected, while can be realized the energy-saving of injection device.But the work of mold closing mechanism in the prior art
It is carried out using the large-scale pump that pump rotates always, therefore fails the energy-saving for sufficiently realizing injection (mo(u)lding) machine entirety.In addition,
Moving template mobile unit uses electric motor in patent document 2, therefore can be realized the energy-saving of the part of above-mentioned mobile unit
With high speed and high-precision movement.But injection device is not explicitly indicated that using which kind of driving method, and due to
Make the work of the other parts of mold closing mechanism using the large-scale pump that pump rotates always to carry out, therefore whole for injection (mo(u)lding) machine
Body fails sufficiently to realize energy-saving.In addition, in patent document 3 using multiple pumps to be worked using servo motor, and according to
It needs to make the pump of a side to stop, therefore can be realized energy-saving as hydraulic mechanism.But due to controlling injection by hydraulic
All mechanisms of molding machine, thus with the device phase that directly makes the work such as injection device using electric motors such as servo motors
Than cannot sufficiently realize energy-saving, and there is a problem of can not high-precision control injection device etc..
For this purpose, the object of the present invention is to provide a kind of clampings of mold closing mechanism to use hydraulic injection (mo(u)lding) machine, it is right
In the mold closing mechanism for carrying out compressing molding for a long time using electric motor realization high precision int and energy-saving and needs in injection device
Also it is able to achieve energy-saving.
The method for solving problem
Injection (mo(u)lding) machine described in the solution of the present invention 1 carries out the work of the screw rod of injection device using electric motor,
And the work of the molding cylinder body of mold closing mechanism is carried out using hydraulic, which is characterized in that have: making the injection of screw rod forward-reverse
Use servo motor；The metering servo motor for rotating screw rod；The mould for carrying out the movement of the movable template of mold closing mechanism, which is opened and closed, to be used
Servo motor；The first pump that electric motor as driving source rotates always；And second pump, make electricity in closing cylinder body running
It moves motor rotation and supplies working oil, the electric motor when molding any one actuator work other than cylinder body as driving source
Stop or is rotated with minimum speed.
Injection (mo(u)lding) machine described in the solution of the present invention 2, on the basis of scheme 1, which is characterized in that the mould of mold closing mechanism
The work of switching mechanism is carried out by mould opening and closing with servo motor, at least half of the working time of above-mentioned mould opening and closing servo motor
Time, it is above-mentioned second pump rotation stop or rotated with minimum speed.
Injection (mo(u)lding) machine described in the solution of the present invention 3, on the basis of scheme 1 or 2, which is characterized in that above-mentioned first
Pump controls the revolving speed of pump using frequency converter, and above-mentioned second pump controls the revolving speed of pump using servo motor.
Injection (mo(u)lding) machine described in the solution of the present invention 4, on the basis of scheme 1 or 2, which is characterized in that molding cylinder body
It works using by pilot pressure come the valve of work, the work that pilot pressure is pumped by above-mentioned first is ensured.
The effect of invention
Injection (mo(u)lding) machine of the invention is carried out the work of the screw rod of injection device using electric motor, and utilized hydraulic
Come carry out mold closing mechanism molding cylinder body work, have: in order to carry out the work of mold closing mechanism and as the electronic of driving source
The first pump that motor rotates always；And second pump, when mold any one actuator other than cylinder body and working, as driving source
Electric motor stop or rotated with minimum speed, therefore, can not only realize the high precision int and energy-saving of injection device, also
It can be realized the energy-saving of mold closing mechanism.
Detailed description of the invention
Fig. 1 is the hydraulic circuit of the injection (mo(u)lding) machine of present embodiment and the explanatory diagram of control device.
Fig. 2 is the time diagram for indicating each process of injection (mo(u)lding) machine of present embodiment.
The figure of the work of pump when Fig. 3 is the cutting control for indicating the injection (mo(u)lding) machine of present embodiment.
Fig. 4 is the pump of the die closing process for indicating the injection (mo(u)lding) machine of present embodiment, die sinking process (pressure control) etc.
The figure of job control.
Fig. 5 is the figure for indicating the job control of the pump of molding process of the injection (mo(u)lding) machine of present embodiment, to be pressurized work
The figure of sequence (pressure control).
Fig. 6 is the job control for indicating the pump of strength die sinking process (speed control) of the injection (mo(u)lding) machine of present embodiment
Figure.
Fig. 7 is the job control for indicating the second pump of removal process (speed control) of the injection (mo(u)lding) machine of present embodiment
Figure.
In figure:
11- injection (mo(u)lding) machine, 13- injection device, 14- screw rod, 15,16,31,55- servo motor, 17- molding dress
It sets, 18- molds cylinder body, and 42- first is pumped, 44- frequency converter, 45- electric motor, 54- pressure reducing valve, and 56- second is pumped.
Specific embodiment
The injection (mo(u)lding) machine of embodiments of the present invention 11 is illustrated referring to Fig.1.Injection (mo(u)lding) machine 11 is to utilize electricity
Dynamic motor 15,16 is configured the work in the screw rod 14 of the injection device 13 on pedestal 12 and is carried out using hydraulic same
Sample is set to the injection (mo(u)lding) machine 11 of the work of the molding cylinder body 18 of the mold closing mechanism 17 on pedestal 12.Firstly, to injection device
13 are illustrated, and in the inner hole of the inside of cartridge heater 19, screw rod 14 is can rotate and can carry out in a manner of forward-reverse
Setting.Also, nozzle 20 is equipped in the front of cartridge heater 19.In addition, on the foreboard 21 for being fixed with cartridge heater 19, the confession of material
It is arranged to hole 22 towards the inner hole of cartridge heater 19.Also, in the front of foreboard 21, being equipped with makes injection device 13 integrally advance
The cylinder body of the cylinder body 24 of retrogressing and the nozzle contact for the nozzle contact mechanism for abutting nozzle 20 with cover half 23.In addition, spray
The actuator of mouth contact mechanism is also possible to the mechanism using electric motor and ball-screw etc..
In addition, the rear (being right side in Fig. 1) in foreboard 21 is equipped with back plate 25, it can between foreboard 21 and back plate 25
It is equipped with push plate 26 (intermediate plate) while forward-reverse is carried out on the direct acting guide part being set on pedestal 12.Moreover, in back plate 25
Upper fixation makes the servo motor 15 (electric motor) of the injection of 14 forward-reverse of screw rod, the drive shaft and ball of servo motor 15
Lead screw connection.In addition, being fixed with ball-screw nut in push plate 26, ball-screw is interted on above-mentioned ball-screw nut,
Rotate by ball-screw makes push plate 26 carry out forward-reverse movement.Also, being fixed in push plate 26 makes screw rod 14
The drive shaft of the servo motor 16 (electric motor) of the metering of rotation, servo motor 16 connects via the rear of band and screw rod 14
It connects, and is linked with the belt wheel being fixed in the rotary shaft by the support of 26 axis of push plate.In addition, injection device 13 can also be by
The servo motor (electric motor) of injection is fixed on foreboard 21 and servo motor (the electronic horse of metering is fixed in back plate
Up to) two plates constitute.The actuator of screw rod 14 will be driven as the injection device 13 of electric motor as described above, injected
When or be able to carry out high-precision control when metering, and it is also excellent in terms of energy-saving.
Secondly, mold closing mechanism 17 is illustrated, it is attached in the quadrangle for the fixed form 27 being fixedly installed relative to pedestal 12
It is close to be equipped with molding cylinder body 18.Moreover, the piston rod of molding cylinder body 18 constitutes connecting rod 28, connecting rod 28 interts movable template 29
Sleeve (pilot hole) near quadrangle.In addition, it is interspersed to be formed with the nozzle 20 for injection device 13 in the center of fixed form 27
Cone hole.Moreover, being equipped with the hydraulic cylinder 24 of said nozzle contact in the two sides in the above-mentioned hole of fixed form 27
Piston rod.In addition, in fixed form 27, cover half 23 is installed on the template face opposite with injection device, nozzle 20 via
Above-mentioned Kong Eryu cover half 23 abuts.Also, the actuator of mould switching mechanism is respectively fixed with i.e. in the two sides of fixed form 27
Servo motor 31 (electric motor), is linked with ball-screw 32 in the drive shaft of servo motor 31.In addition, in movable template 29
Two sides be fixed with ball-screw nut 33, above-mentioned ball-screw 32 interts ball-screw nut 33.Using this mechanism,
In present embodiment, the movement (mould opening and closing) of movable template 29 is carried out using electric motor.In addition, the servo of mould switching mechanism
Motor 31 can also be fixed on pedestal 12, and mould switching mechanism also can use hydraulic cylinder and carry out work.
In addition, the engaging portion 34 for being formed with multiple slots is equipped in the periphery of connecting rod 28, in the lateral wall of movable template 29
It is split equipped with making halfnut 36 work using hydraulic cylinder 35 near the part of the sleeve interted for connecting rod 28 in face
Nut body.It is above-mentioned equipped with guide rails (not shown), movable templates 29 such as direct acting guide parts along mould opening and closing direction on pedestal 12
Rail guidance.Moreover, movable template 29 can be opened and closed by above-mentioned guide rail and the guidance of connecting rod 28 to mould using mould switching mechanism
Direction is mobile.Dynamic model 38 is installed on the template face of the movable template 29 opposite with fixed form 27.Also, in movable template 29
The back side (opposite side of the mounting surface of dynamic model 38) ejecting mechanism 40 for having hydraulic cylinder 39 is installed.In addition, halfnut
The actuator of mechanism and ejecting mechanism 40 also can use electric motor and carry out work.
Then, the control device 41 and hydraulic circuit of injection (mo(u)lding) machine 11 are illustrated referring to Fig.1.Firstly, to first
Pump 42 is illustrated, and the first pump 42 is connected on fuel tank 43, and the first pump 42 can be using the control of frequency converter 44 per unit time
Pump revolving speed and rotate driving.Moreover, frequency converter 44 is controlled by the control device 41 connected, by utilizing frequency converter
44 control frequencies to control the revolving speed of electric motor 45 (three-phase induction motor).In the present embodiment, the first 42 uses of pump can
The axial type piston of variable capacity type.Moreover, the angle of the swash plate of the discharge capacity of the first pump 42 of change changes cylinder by discharge capacity
Body 46 (compensator) switches.Working oil is supplied to discharge capacity change cylinder body 46 via discharge capacity switching valve 47, to row
In the case that the supply amount (supply pressure) for the working oil that capacity change cylinder body 46 supplies out is little or no, discharge capacity change
The piston rod of cylinder body 46 is returned by spring, so that the angle of swash plate becomes zero or minimum state.
In addition, being set side by side with different 50 He of the first safety valve of setting pressure from 49 branch of pilot pipe of the first pump 42
Second safety valve 51.Moreover, with to which of above-mentioned first safety valve 50 or the second safety valve 51 and discharge capacity change
For the purpose of the connection of cylinder body 46 switches over, equipped with the switching valve 52 for carrying out electromagnetism work.First safety valve 50 and the second safety valve
51 setting pressure can be inputted by setting and be changed via control device 41.In addition, above-mentioned switching valve 52 also by
Carry out the signal of self-control device 41 to switch.In this way, present embodiment first pump 42 be can control for two setting pressure,
And delivery flow also can carry out the pump of closed-loop control using frequency converter, therefore help to realize energy-saving.Also, working as makes the first pump
When 42 revolving speed reduces, additionally aiding prevents noise.In addition, the setting pressure of the first pump 42 for 1 grade or can both change
For 3 grades or more of multiple grades.Alternatively, the setting pressure of the first pump 42 is also able to carry out stepless change.It is set that stepless can change
In the case where the axial type piston pump of constant-pressure, if when carrying out pressure control become pump 31 sides setting setting pressure or
Person is close to setting pressure, then the work with control proportioning valve (not shown) or electromagnetic proportional valve interlocks and the progress of switching valve 39 that throttles
Work, to change the angle of the swash plate of pump 42.In the case, pump side setting pressure can the upper limit and lower limit it
Between carry out stageless setting.In the case where carrying out the cutting control of pump 42 in above-mentioned apparatus, the swash plate if close to setting pressure
Angle gradually changes, so that the discharge rate rotated each time is reduced, the discharge rate from pump 42 becomes if becoming setting pressure
The value of zero or near zero, therefore can reduce the load for making the electric motor of 42 rotation of pump.Also, electric power aequum will not be consumed
More than.
In addition, being not limited to axial type piston pump for the first pump 42, being also possible to gear pump or vane pump etc..And
And for the driving source of the first pump 42, either the device of closed-loop control is carried out to revolving speed using servo motor, it can also
To be the device using the electric motor without closed-loop control to be rotated always with constant rotational speed.
It is equipped with check-valves 53 on the pipeline 48 from the first pump 42, is equipped with and is carried out in its front end (side far from pump)
The pressure reducing valve 54 (electromagnetic pressure control valve) of closed-loop control.To even if supply pressure is controlled as two in the first pump 42
Any of pressure also can use the control of the further pressure of pressure reducing valve 54 and be required pressure and supply to molding cylinder body 18 etc.
To working oil.The front-end branches of pressure reducing valve 54 go out pipeline 48, in the present embodiment, with the molding cylinder body 18 of clamping, right
The hydraulic cylinder 24 for opening the nozzle contact of the hydraulic cylinder 35, nozzle contact mechanism of nut body connects.In this ejecting mechanism
40 hydraulic cylinder 39 supplies working oil using the second pump 56 controlled by aftermentioned servo motor 55, but can also be from first
42 supply working oil of pump.
The hydraulic circuit of each hydraulic cylinder 18,24,35,39 as actuator is illustrated, in molding cylinder body 18
Molding be connected on grease chamber 18a molding the side side grease chamber 18a pipeline so as to via tubular inserted valve 57 supply working oil,
The pipeline of the molding side grease chamber 18a of the front end of tubular inserted valve 57 is equipped with hydrostatic sensor 58.Also, it is oily being used from molding
The pipeline of the line branching of the room side 18a is equipped with the open and close valve 59 of decompression.In addition, for above-mentioned tubular inserted valve 57 via elder generation
Conduit 60 is controlled using pilot pressure, thus in order to the pilot pressure to pilot pipe 60 is supplied and is cut off and be equipped with into
The switching valve 61 of row electromagnetism work.In addition, the die sinking of molding cylinder body 18 is similarly connected via tubular inserted valve 62 with grease chamber 18b
It connects, the pipeline of the die sinking side grease chamber 18b of the front end of tubular inserted valve 62 is connect with die sinking with grease chamber 18b.Also, it is used from die sinking
The pipeline of the line branching of the side grease chamber 18b is equipped with the open and close valve 63 of pressure release.In addition, for above-mentioned tubular inserted valve 62 via
Pilot pipe 64 is controlled using pilot pressure, so being equipped with the switching valve 65 for carrying out electromagnetism work in pilot pipe 64, is used for
Pilot pressure is supplied and is cut off.
For the hydraulic cylinder 24 of the nozzle contact of the hydraulic cylinder 35 and nozzle contact mechanism of halfnut mechanism, warp
The four-way switching valve 75,76 for carrying out electromagnetism work is equipped in its front end (cylinder body side) by pressure reducing valve 66,67, thus the confession to cylinder body
It is switched over to the room of the side of working oil.Also, although it is not shown, but also sometimes cover half 23 or dynamic model 38 also using gate valve,
Xing Xin mobile mechanism, mold installing mechanism etc. come using hydraulic cylinder.
Then, the second pump 56 is illustrated, the revolving speed pumped using the control of servo motor 55 is connected on fuel tank 43
Second pump 56.Second pump 56 is the constant gear pump of the discharge rate that rotates each time.Moreover, 55 benefit of servo motor of the second pump 56
Current value is controlled with servo amplifier 68 and closed-loop control is carried out to the revolving speed per unit time of electric motor.In addition, second
The stopping of pump 56 and the responsiveness for starting rotation are also excellent.Servo amplifier 68 is controlled using the signal for carrying out self-control device 41
System.Second pump 56 of present embodiment is duplex pump, and a pump 56a is via pipeline 69 and the carry out electromagnetism work for being set to pipeline 69
The four-way switching valve 70 of work and connect with the hydraulic cylinder of ejecting mechanism 40 39.In addition, 39 energy of hydraulic cylinder of ejecting mechanism 40
Enough four-way switching valves 70 for replacing carrying out opened loop control switch function using servo valve or other directions that have for carrying out closed-loop control
The flow control valve of energy is controlled with higher precision.Also, another pump 56b is via pipeline 71 and is set to above-mentioned pipeline 71
Check-valves 72 and with from first pump 42 supply working oils pipeline 48 connect.Moreover, supplying working oil from two pumps 56a, 56b
Pipeline 69,71, can using carry out electromagnetism work open and close valve 74 connect and cut off with pipeline 73.In addition, each pipeline 69,
71 are respectively equipped with safety valve 77,78, for the protective loop when not can control servo motor 55 or in the working oil for making a side
It is used when drainage etc..In addition, in the present embodiment, although making the hydraulic cylinder 39 of ejecting mechanism 40 work using the second pump 56,
But other hydraulic cylinders 35 can also be made etc. and also utilize 56 work of the second pump.
In addition, about the servo motor in any one actuator work other than the molding cylinder body 18 as electric motor
55 stop or with the second pump 56 of minimum speed rotation, are not limited to gear pump, or axial piston pump or blade
Pump etc..Also, the driving source of the second pump 56 is also possible to the motor using Frequency Converter Control revolving speed.In addition, in this embodiment party
In formula, the second pump 56 is using multiplex pump but it is also possible to be individual pump.Moreover, in the present embodiment, supplying the pump of working oil
Although 42,56 being made of the first pump 42 and the second pump 56 the two pumps, third pump, the 4th pump, the can also be further provided with
Five pumps ... wait multiple pumps.In addition, above-mentioned third pump, the 4th pump, the 5th pump etc. are either the pump rotated always, is also possible to stop
Spin-ended turn of pump.Moreover, in the prior art to a large amount of working oil of fuel tank drainage in the state of making pump work always, and
Drainage in the present invention without this large amount of working oil, so facilitating energy-saving.
In addition, the mould about the servo motor 15 of above-mentioned injection, the servo motor 16 of metering, movable template 29 is opened and closed
The servo motor 31 of mechanism is connect through not shown servo amplifier with control device 41, and is carried out using control device 41
Closed-loop control.
Then, it is illustrated referring to control method of the Fig. 2 to Fig. 7 to injection (mo(u)lding) machine 11.In the present embodiment, as
An example as shown in figure 3, be as an example to the setting pressure for the first safety valve 50 that the supply pressure of the first pump 42 switches over
The setting pressure of 8MPa, the second safety valve 51 are 18MPa as an example.As shown in Fig. 2, moving movable template 29 in die closing process
Dynamic actuator is carried out using servo motor 31.At this point, the first pump 42 connects the first safety valve 50 and discharge using switching valve 52
Capacity changes cylinder body 46 (compensator).To setting pressure such as Fig. 4 institute of the working oil conveyed from the first pump 42 to pipeline 48
Show, 8MPa needed for becoming the pilot pressure for maintaining pilot pipe 60,64 etc..Moreover, the revolving speed of the first pump 42 becomes also by control
Frequency device 44 and with low speed rotation.If the pressure of the working oil of the pilot pipe 49 of pipeline 48 and the first pump 42 is close to 8MPa at this time,
The offset of first safety valve 50 is worked, and changes cylinder body to discharge capacity from the first safety valve 50 via discharge capacity switching valve 47
The working oil of 46 supplies increases, and the deflection angle of the swash plate of the first pump 42 is switched to small deflection angle from large deflection angle, carries out cutting control
System.To which if the pressure of the working oil of pipeline 48 etc. becomes near setting pressure or setting pressure, the first pump 42 is each time
The discharge rate of rotation is automatically reduced, and the load of the electric motor 45 of the first pump 42 of driving reduces and facilitates energy-saving.Also,
The servo motor 55 of the second pump 56 stops rotating driving at this time.In addition, can also make servo motor 55 second can be made at this time
The minimum speed that pump 56 slightly rotates is rotated.
Then, movable template 29 carries out die closing, if forming die cavity between cover half 23 and dynamic model 38 and completing die closing process,
So that four-way switching valve 66 is worked and the hydraulic cylinder 35 of halfnut mechanism is made to work, makes halfnut 36 and connecting rod 28
Engaging portion 34 cooperates.Then, it is then transferred to pressurization process.In pressurization process, make to mold the work of cylinder body 18 and make to live first
Plug and connecting rod 28 are mobile, to eliminate the gap of halfnut 36 Yu engaging portion 34.Moreover, later to molding side grease chamber 18a
The pressure of working oil boosted and molded.The compression area for molding cylinder body 18 at this time is larger, so in order to make piston
And the movement of connecting rod 28 then needs to supply a large amount of working oil.As the work of the hydraulic circuit in pressurization process, make to cut first
It changes the work of valve 61 and utilizes pilot pressure operation tubular inserted valve 57, be connected to 48 side of pipeline with molding side grease chamber 18a.
First pump 42 utilizes come the instruction of self-control device 41 by the control frequency and to the revolving speed of electric motor of frequency converter 44
Speedup is carried out, to make to pump high speed rotation.Also, switching valve 52 is switched over and becomes the second safety valve 51 with discharge capacity
The connection of more cylinder body 46 (compensator).Thus 18MPa is changed to from the setting pressure of the working oil of 42 supply of the first pump.In addition,
The method that the change of above-mentioned revolving speed and setting pressure is also cooperated using halfnut 36, but can also will terminate it in die closing
It is preceding or just terminate after carry out.In addition, for the second pump 56, in the present embodiment since making it before die closing will terminate
Revolving speed is set as maximum while die closing terminates and is discharged by rotation.At this point, open and close valve 74 is opened and ejecting mechanism 40
The four-way switching valve 70 for leading to cylinder body 39 be closed, from the twocouese of double pump 56a, 56b molding cylinder body 18 supply working oil.
In addition, when starting the supply, it can also be while die closing terminates, or slightly lag and start to carry out the rotation of the second pump 56
Turn.
Thus in the present invention, when the work (being herein to be pressurized work) for the molding cylinder body 18 for need most working oil
When, as shown in figure 5, making the second pump 56 work and adding up and converge with the working oil from the first pump 42, to make to mold cylinder body
18 work.Therefore, even if the compression area of molding cylinder body 18 is larger, it can also be made to work with higher speed and with higher speed
Degree boosting.
Then, if the pressure of working oil detected in pressurization process by hydrostatic sensor 58 reach setting pressure (such as
18MPa), then the second pump 56 stops rotating (or rotation is made to be reduced to minimum speed).But due to being equipped with check-valves 72, because
Even if this stops the second pump 56, will not be flow backwards from the working oil of 42 supply of the first pump to the second 56 sides of pump.It is substantially same at this time
When or slightly before and after it, the pressure of pipeline 48 reaches 18MPa, thus before it is slightly the second safety valve 51 offset
It works, leaks working oil from the second safety valve 51, supplied via discharge capacity switching valve 47 to discharge capacity change cylinder body 46
Working oil increase.Moreover, as shown in figure 3, the deflection angle for carrying out the swash plate of the first pump 42 is switched to primary deflector from large deflection angle
The cutting at angle controls.In addition, the stopping about the second pump 56, also can use the angle of the deflection angle of the first pump 42, sets in advance
Fixed timing (timing control), the mold clamping force detected by sensor, the position for molding cylinder body 18 etc. and stop.In addition, upper
State described in content molding cylinder body 18 set pressure as pump with first 42 the identical 18MPa of the setting pressure of supply side
Example.But it is possible to arbitrarily control the setting pressure of molding cylinder body 18 using pressure reducing valve 54, such as closed being controlled with 16MPa
In the case where mould cylinder body 18, so that the side that the setting pressure of molding cylinder body 18 is different from the setting pressure of supply side of the first pump 42
Formula is controlled.Moreover, when hydrostatic sensor 58 detect molding 18 side of cylinder body set pressure as 16MPa (pressure reducing valve 54
Set pressure) when, so that the second pump 56 is stopped working.
Then, in holding process later, molding side grease chamber 18a and pipeline 48 of cylinder body 18 etc. is molded and has been boosted to
Pressure is set, therefore the angle of the swash plate of the first pump 42 automatically continues to the state of small deflection angle.Also, the first pump 42
Revolving speed carries out control revolving speed by frequency converter 44, but maintains high speed rotation state.In addition, first can also be made in keeping process
The revolving speed of pump 42 reduces.In keeping process, the amount etc. leaked from molding cylinder body 18 and hydraulic circuit is only supplemented, in order to avoid molding
The pressure decline of the working oil of the molding side grease chamber 18a of cylinder body 18, therefore actually from the first pump 42 to above-mentioned molding side grease chamber
The working oil of 18a supply is few.Then, if by scheduled delay time, the servo of the injection of injection device 13 is driven
Motor 15 and make screw rod 14 advance, will be in the molten resin injection fillers to die cavity that measured in advance.Nozzle is connect so far
The hydraulic cylinder 24 of touching supplies working oil and injection device 13 is made to advance, so that nozzle 20 be made to abut with cover half 23.Alternatively, root
The state for keeping nozzle 20 to abut with cover half 23 in advance according to the difference of forming method in advance contacts nozzle use in the case
Hydraulic cylinder 24 enclose pressure.In the present embodiment, the actuator of the injection mechanism of injection device 13 is by servo motor 15
(electric motor) driving, so being able to carry out high-precision control.
In the holding process after injection fillers and pressure maintaining, the molten resin in die cavity is cooled and solidified.Moreover, with molten
The cooling and solidifying of melt resin is parallel, is closed with keeping the state of nozzle contact in injection device 13 or retreating nozzle 20
The state of nozzle 20 drives the servo motor 16 of metering and rotates screw rod 14, then carries out the molten resin for injection
Metering.
Next, being switched over to switching valve 61 in pressure release process and being also switched off tubular inserted valve 57, prevent working oil
It is supplied from the first 42 sides of pump to molding side grease chamber 18a.Then, opening open and close valve 59 returns to the working oil for molding side grease chamber 18a
To fuel tank 43, the pressure for molding side grease chamber 18a is made to become 0.Also, at the same time or slightly before and after it, by switching valve
52 switch over and the setting pressure of the first pump 42 are set as low pressure.It simultaneously carries out that the revolving speed of the first pump 42 is made to pass through control at this time
Frequency converter 44 is changed to low speed rotation.In addition, the revolving speed of the first pump 42 of pressure release process can also keep high speed rotation.It is utilizing
During the holding process that injection device 13 is concurrently measured and during pressure release process, the second pump 56 keeps halted state.
Next, being opened process using the strength that molding cylinder body 18 starts to carry out to open dynamic model 38 from cover half 23.In strength
It is opened in process, switching valve 65 is switched over and tubular inserted valve 62 is made to work, connect the pipeline 48 of pump side and be connected to out
The pipeline of mould side grease chamber 18b.At the same time or slightly before and after it, the setting pressure of the first pump 42 is set as high pressure and is controlled
Frequency converter 44, so that the revolving speed of pump is set as high speed rotation.Also, by making the servo motor 55 that stopped carry out rotation drive
It is dynamic, thus from 56 supply working oil of the second pump.At this point, servo motor 55 can also be made with low speed from the latter half of pressure release process
Carry out rotation driving.
In strength die sinking process, the piston and piston that mold cylinder body 18 are made with scheduled stroke (such as tens mm or so)
The bar direction (connecting rod 28) Xiang Kaimo is mobile, and carries out speed control at this time.About speed control, as shown in fig. 6, the first pump 42
Working oil is supplied with maximum capacity, closed-loop control is carried out to the revolving speed of the servo motor 55 of the second pump 56, to utilize closing cylinder
Body 18 carries out the control of the movement speed of movable template 29 and dynamic model 38.Speed control is carried out as described above in strength die sinking process
System, and due to the relationship with pressure, the first pump 42 carries out cutting control before it will become setting pressure.In addition, the second pump
56 control revolving speeds to carry out speed control, and when pressure reaches setting value, working oil (safety is leaked from safety valve 77,78
Valve).In addition, the setting pressure of the first pump 42 in strength die sinking process is controlled by pressure reducing valve 54, but can also be with first
The setting pressure for pumping 42 sides is identical.
In die sinking process later, molding cylinder body 18 is made to stop working, is releasing halfnut 36 and connecting rod 28
After the cooperation of engaging portion 34, drives the servo motor 31 of mould switching mechanism and movable template 29 and dynamic model 38 is made to be moved to die sinking
End position.At this point, making 42 low speed of the first pump, the slow-speed of revolution, stop the second pump 56.
If movable template 29 and dynamic model 38 stop and terminate to be opened process in die sinking end position, carry out utilizing top later
Mechanism 40 makes the removal process that molded product is prominent and is shifted using withdrawing device (not shown) out.In removal process, it is
So that ejecting mechanism 40 is worked, so that the servo motor 55 of the second pump 56 is carried out rotation driving.Safety valve 78 is opened at this time, pump
The working oil of 56b carries out drainage to fuel tank, and the working oil of only pump 56a is supplied to ejecting mechanism 40 via four-way switching valve 70
Hydraulic cylinder 39.Open and close valve 74 is closed at this time, and due to being equipped with check-valves 72, working oil is not from the first pump side 42
It flows into.To as shown in fig. 7, ejecting mechanism 40 carries out speed control by the revolving speed of the servo motor 55 of the second pump 56 of control
System.In addition, at this point, being switched instead of four-way switching valve 70 by using servo valve or other directions that have for carrying out closed-loop control
The flow control valve of function, so as to more precisely control ejecting mechanism 40.In addition, utilizing electronic horse in ejecting mechanism 40
In the case where work, certain second pump 56 does not work.Also, ejecting mechanism 40 also can use the work from 42 supply of the first pump
Carry out work as oil.
As described above, in the present invention, first pumps 42 for the work and holding pilot pipe of each hydraulic cylinder 17,24,35
60,64 etc. pilot pressure, and rotate electric motor 45 always.Also, the second pump 56 is molding any other than cylinder body 18
A actuator work when (such as the servo motor 15 of injection, the servo motor 16 of metering, mould opening and closing servo motor 31
When work or when the hydraulic cylinder 35 of halfnut waits work), electric motor (servo motor 55) stops or with minimum speed
Rotation, if, in the supply deficiency of working oil, at least carried out only from 42 supply of the first pump with the high rotation for being greater than minimum speed
Rotation driving, to supply working oil.
To, such as other than the molding cylinder body 18 of the clamping of mold closing mechanism 17, also make mould using hydraulic cylinder
In the case that switching mechanism works, the hydraulic cylinder of mould opening and closing needs to supply a large amount of working oil, thus in die closing process and
Also make the second pump 56 rotation driving in die sinking process and supply working oil.In the present invention, fill injection using electric motor
In the case where setting 13 work, for the biggish cylinder body of supply amount of the working oil of 17 side of mold closing mechanism, and with use servo motor
55 the second motor 56 carries out the supply of working oil, and the hydraulic cylinder small for the supply amount of other working oils is (in this implementation
In mode other than the hydraulic cylinder 39 of ejecting mechanism 40) or supply from the working oil to pilot pipe, by using carry out frequency conversion
First pump 42 of the electric motor 45 of control carries out the supply of working oil, so as to realize energy-saving.
Industrial availability
About the present invention, although not enumerating, it is not limited to above-mentioned present embodiment, can also be fitted certainly
The mode changed for those skilled in the art based on spirit of the invention.Injection moulding as object of the invention
Machine does not limit its size and structure, and the injection (mo(u)lding) machine for the large size for being as an example 800t or more suitable for such as mold clamping force,
And the injection (mo(u)lding) machine molded without using elbow type mechanism and using molding cylinder body.Also, injection (mo(u)lding) machine is also possible to can
Moving template vertically carries out the vertical type injection molding machine of lifting moving.In addition, injection (mo(u)lding) machine can also be in movable template
On rotary table is installed.Moreover, the quantity of injection device is not limited to 1, it is more that multiple injection devices progress also can be used
The molding of color molded product.Moreover, injection (mo(u)lding) machine carry out multicolour forming product molding situation under, in addition to fixed form, can
Except moving template, the intermediate die plate rotated can also be set between fixed form and movable template, be installed on fixation
The cover half of template be installed on the intermediate mold of intermediate die plate and be installed on the intermediate mold of intermediate die plate and be installed on movable
Between the dynamic model of template, be utilized respectively different resins and formed, then make intermediate die plate and intermediate mold rotated and
It is carried out similarly molding, thus allows for the molding of multicolour forming product.
In addition, in said structure, injection (mo(u)lding) machine can also carry out injection compression molding or foam-formed.It is being infused
The case where penetrating compression forming is inferior, and accumulator can also be arranged on hydraulic circuit, realizes the boosting of high speed when molding.And
And above-mentioned injection compression molding or it is foam-formed etc. in, the value that can also carry out detection pressure sensor is watched to carry out control
Take the pressure control of the revolving speed of motor or the pressure control of control pressure reducing valve etc..In addition, in the structure using 4 molding cylinder bodies
In, the valve of closed-loop control can also be able to carry out to carry out respectively using servo valve etc. to each molding cylinder body in compression forming
Control, to be controlled in parallel.In addition, injection (mo(u)lding) machine in addition to for other than synthetic resin, can be also used for metal at
The various molded products such as organic molded product other than type product, inorganic molded product, resin.
Claims (5)
1. a kind of injection (mo(u)lding) machine is carried out the work of the screw rod of injection device using electric motor, and is carried out using hydraulic
The work of the molding cylinder body of mold closing mechanism, which is characterized in that
Above-mentioned injection (mo(u)lding) machine has:
Injection servo motor；
Servo motor is used in metering；
The first pump that electric motor rotates always；And
Second pump, at least makes electric motor rotate and supply working oil when molding the pressurization work of cylinder body, when comprising injection
Molding cylinder body other than any one actuator work when make electric motor stop or rotated with minimum speed,
The electric motor of the electric motor of first pump and the second pump is servo motor respectively,
At least in the working oil that will be conveyed from first pump and the second pump with the mobile pressurization process of the piston for molding cylinder body
It adds up and converges to molding cylinder body supply working oil,
If molding cylinder body reaches setting pressure, at least stops the electric motor of the second pump or molding side is entered with minimum speed
Holding process,
In the holding process, if having passed through scheduled delay time, the servo motor of the injection of injection device is driven
And it is injected.
2. injection (mo(u)lding) machine according to claim 1, which is characterized in that
The work of the mould switching mechanism of mold closing mechanism is carried out by servo motor, above-mentioned mould switching mechanism working time at least
The rotation of more than half time, above-mentioned second pump are stopped or are rotated with minimum speed.
3. a kind of control method of injection (mo(u)lding) machine, above-mentioned injection (mo(u)lding) machine carry out the screw rod of injection device using electric motor
Work, and carry out using hydraulic the work of the molding cylinder body of mold closing mechanism,
The control method of above-mentioned injection (mo(u)lding) machine is characterized in that,
Above-mentioned injection (mo(u)lding) machine has:
The first pump that electric motor rotates always；And
Second pump, the electronic horse in any one actuator work other than the molding cylinder body of the holding process comprising mold closing mechanism side
It is rotated up to stopping or with minimum speed,
The electric motor of the electric motor of first pump and the second pump is servo motor respectively,
At least in the mobile pressurization process of the piston with molding cylinder body in a manner of the second pump work before die closing will terminate
Or die closing lags while terminate or slightly and makes the second pump work, the working oil of first pump and the second pump is cumulative simultaneously
Converge to molding cylinder body supply working oil,
If molding cylinder body reaches setting pressure, at least stops the electric motor of the second pump or molding side is entered with minimum speed
Holding process,
In the holding process, if having passed through scheduled delay time, the servo motor of the injection of injection device is driven
And it is injected.
4. the control method of injection (mo(u)lding) machine according to claim 3, which is characterized in that
Molding cylinder body work using by pilot pressure come the valve of work, pilot pressure pass through above-mentioned first pump work
To ensure.
5. the control method of injection (mo(u)lding) machine according to claim 3, which is characterized in that
Above-mentioned injection (mo(u)lding) machine be equipped with injection servo motor and metering servo motor, driving injection servo motor come into
Row injection fillers, and drive metering and carried out with servo motor the metering of the molten resin for injection.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-005133 | 2013-01-16 | ||
| JP2013005133A JP5757585B2 (en) | 2013-01-16 | 2013-01-16 | Injection molding machine |
| CN201410006804.2A CN103921418B (en) | 2013-01-16 | 2014-01-07 | Injection molding machine |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410006804.2A Division CN103921418B (en) | 2013-01-16 | 2014-01-07 | Injection molding machine |
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| CN201710071361.9A Active CN106738746B (en) | 2013-01-16 | 2014-01-07 | Injection molding machine |
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| JP (1) | JP5757585B2 (en) |
| KR (2) | KR101535834B1 (en) |
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| CN105538625B (en) * | 2016-01-25 | 2018-01-02 | 海天塑机集团有限公司 | A kind of injection machine synchronization system and its oil circuit control method |
| JP7032188B2 (en) * | 2017-03-31 | 2022-03-08 | 住友重機械工業株式会社 | Injection molding machine |
| CN108198769B (en) * | 2017-12-18 | 2020-04-07 | 重庆市长寿区普爱网络科技有限公司 | Electronic component manufacturing equipment |
| JP7103885B2 (en) | 2018-07-31 | 2022-07-20 | 太陽誘電株式会社 | Magnetically coupled coil parts |
| JP7297661B2 (en) * | 2019-12-27 | 2023-06-26 | 住友重機械工業株式会社 | Injection molding machine |
| AT525047B1 (en) | 2021-06-23 | 2022-12-15 | Engel Austria Gmbh | Hydraulic drive device for a shaping machine |
| CN114889201A (en) * | 2022-05-11 | 2022-08-12 | 太原理工大学 | Hydraulic drive mode locking system and control method thereof |
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| JP4934641B2 (en) * | 2008-06-10 | 2012-05-16 | 日精樹脂工業株式会社 | Injection compression molding machine and injection compression molding method |
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- 2014-01-06 KR KR1020140001277A patent/KR101535834B1/en active IP Right Grant
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|---|---|---|---|---|
| JP2002283425A (en) * | 2001-03-27 | 2002-10-03 | Toshiba Mach Co Ltd | Mold opening/closing device of injection foam molding machine |
| CN1939697A (en) * | 2005-09-08 | 2007-04-04 | 日精树脂工业株式会社 | Injection molding machine |
| CN102555173A (en) * | 2012-01-17 | 2012-07-11 | 群基精密工业(苏州)有限公司 | Hybrid composite precision injection molding machine |
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| Publication number | Publication date |
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| JP5757585B2 (en) | 2015-07-29 |
| CN106738746A (en) | 2017-05-31 |
| KR101567945B1 (en) | 2015-11-10 |
| CN103921418B (en) | 2017-03-01 |
| CN103921418A (en) | 2014-07-16 |
| KR20140092763A (en) | 2014-07-24 |
| KR20150032854A (en) | 2015-03-30 |
| KR101535834B1 (en) | 2015-07-10 |
| JP2014136342A (en) | 2014-07-28 |
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