CN104786423B - Injection (mo(u)lding) machine - Google Patents

Injection (mo(u)lding) machine Download PDF

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Publication number
CN104786423B
CN104786423B CN201410465140.6A CN201410465140A CN104786423B CN 104786423 B CN104786423 B CN 104786423B CN 201410465140 A CN201410465140 A CN 201410465140A CN 104786423 B CN104786423 B CN 104786423B
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CN
China
Prior art keywords
matched moulds
injection
mentioned
mold clamping
force snesor
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Application number
CN201410465140.6A
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Chinese (zh)
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CN104786423A (en
Inventor
阿部昌博
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Priority to JP2014-009023 priority Critical
Priority to JP2014009023A priority patent/JP6289917B2/en
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Publication of CN104786423A publication Critical patent/CN104786423A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03Injection moulding apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76003Measured parameter
    • B29C2945/76006Pressure

Abstract

It is an object of the invention to provide a kind of injection (mo(u)lding) machine for the detected value that can apply flexibly matched moulds force snesor.The injection (mo(u)lding) machine possesses:In movable member, the die device that moulding material is pressed into matched moulds state;Drive division, moves the movable member;Matched moulds force snesor, detection acts on the mold clamping force of above-mentioned die device;And mold clamping force monitoring unit, the detected value of above-mentioned matched moulds force snesor is monitored, the detected value of the above-mentioned matched moulds force snesor in the action of the mold clamping force monitoring unit based on above-mentioned drive division evaluates the weight of products formed.

Description

Injection (mo(u)lding) machine
Technical field
The application advocates the priority based on Japanese patent application filed in 21 days January in 2014 the 2014-009023rd. The full content that it is applied is by reference to being applied in this specification.
The present invention relates to injection (mo(u)lding) machine.
Background technology
The moulding material of liquid is filled into the cavity space in the die device of matched moulds state by injection (mo(u)lding) machine, is passed through Filled mold material cures is carried out moulding moulded product (referring for example to patent document 1).
Patent document 1:Japanese Unexamined Patent Publication 2011-183705 publications
Injection (mo(u)lding) machine has the matched moulds force snesor for detecting the mold clamping force for acting on die device.In the past, mold clamping force was passed The detected value of sensor can not be applied flexibly fully.
The content of the invention
The present invention makes in view of the above problems, and its main purpose, which is to provide one kind, can apply flexibly matched moulds force snesor Detected value injection (mo(u)lding) machine.
In order to solve the above problems, according to the mode of the present invention, possess:
In movable member, the die device that moulding material is pressed into matched moulds state;
Drive division, moves the movable member;
Matched moulds force snesor, detection acts on the mold clamping force of above-mentioned die device;And
Mold clamping force monitoring unit, monitors the detected value of above-mentioned matched moulds force snesor,
The detected value of above-mentioned matched moulds force snesor in the action of the mold clamping force monitoring unit based on above-mentioned drive division, is evaluated into The weight of type product.
The effect of invention:
According to the mode of the present invention, using the teaching of the invention it is possible to provide a kind of injection moulding for the detected value that can apply flexibly matched moulds force snesor Machine.
Brief description of the drawings
Fig. 1 is the figure for the injection (mo(u)lding) machine for representing one embodiment of the present invention.Symbol description
2 injection (mo(u)lding) machines
10 mold closing mechanisms
11 frameworks
12 fixation clips
13 movable pressure plates
15 rear fenders
16 pull bars
18 matched moulds force snesors
20 toggle mechanisms
26 matched moulds motors
26a encoders
30 die devices
32 fixing moulds
33 moveable dies
34 cavity spaces
50 injection devices
51 cylinder bodies
52 screw rods
53 measure motors
54 injection motors
56 nozzles
71 input units
72 image display devices
80 control devices
Embodiment
Hereinafter, the mode for implementing the present invention is illustrated referring to the drawings, in the various figures to identical or corresponding knot Structure assigns identical or corresponding symbol and omitted the description.
Fig. 1 is the figure for the injection (mo(u)lding) machine for representing one embodiment of the present invention.For example as shown in figure 1, injection (mo(u)lding) machine 2 With mold closing mechanism 10, injection device 50, stripper apparatus 60, input unit 71, image display device 72 and control device 80.
Mold closing mechanism 10 carries out mold closing process, matched moulds process, die sinking process.Mold closing process is the work for closing die device 30 Sequence, matched moulds process is the process of fastening die device 30, and die sinking process is the process for opening die device 30.
Injection device 50 is filled process, pressurize process, measurement process.Filling work procedure is the mould dress to matched moulds state The process for putting the moulding material of filling liquid in the cavity space 34 in 30, pressurize process is the cavity space 34 to matched moulds state Interior moulding material applies stressed process, process of the measurement process for metering for the moulding material of ensuing injection.
Stripper apparatus 60 carries out ejection process.Ejection process is the work that products formed is ejected from the die device 30 after die sinking Sequence.
Input unit 71 receives the input operation of user, and exports corresponding with the input operation of user to control device 80 Operation signal.
The display image under the control of control device 80 of image display device 72.In addition, in the present embodiment, setting respectively Input unit 71 and image display device are put, but can also be wholely set, can also be made up of contact panel.
Control device 80 has storage part and the CPU such as memory, by performing the control being stored in storage part by CPU Program, control mold closing mechanism 10, injection device 50, stripper apparatus 60 and image display device 72.
Injection (mo(u)lding) machine 2 is under the control of control device 80, such as by the way that mold closing process, matched moulds work are repeated automatically Sequence, filling work procedure, pressurize process, measurement process, refrigerating work procedure, die sinking process and ejection process, automatically to manufacture repeatedly Products formed.Refrigerating work procedure is to make the process of the mold material cures in cavity space 34., can be cold in order to shorten molding cycle But measurement process is carried out in process.
Then, mold closing mechanism 10 is illustrated.In the explanation of mold closing mechanism 10, with the movable pressure plate 13 during mold closing Moving direction (right in Fig. 1) is front, and the moving direction (left in Fig. 1) of the movable pressure plate 13 during molding is carried out for rear Explanation.
For example as shown in figure 1, mold closing mechanism 10 has framework 11, fixation clip 12, movable pressure plate 13, rear fender 15, drawing Bar 16, toggle mechanism 20 and matched moulds motor 26.
Fixation clip 12 is fixed on framework 11.It is provided with the opposed faces with movable pressure plate 13 of fixation clip 12 solid Fixed mold 32.
Movable pressure plate 13 is moved freely along the guiding piece (such as guide rail) 17 of laying on the frame 11, and is relatively fixed pressing plate 12 is free to advance or retreat.Moveable die 33 is installed in the opposed faces with fixation clip 12 of movable pressure plate 13.
Retreated by making movable pressure plate 13 be relatively fixed pressing plate 12, carry out mold closing, matched moulds, die sinking.By the He of fixing mould 32 Moveable die 33 constitutes die device 30.
Via many (such as 4), pull bar 16 links rear fender 15 with fixation clip 12, and is loaded on the frame 11 Moved freely along mould opening and closing direction.In addition, rear fender 15 can also be moved freely along the guiding piece of laying on the frame 11.After press The guiding piece of plate 15 can be common with the guiding piece 17 of movable pressure plate 13.
In addition, in present embodiment, fixation clip 12 is fixed on the frame 11, make the opposing frame 11 of rear fender 15 along mould It is opened and closed direction movement freely, but rear fender 15 can also be fixed on the frame 11, the opposing frame 11 of fixation clip 12 is existed Mould opening and closing side is moved up freely.
Pull bar 16 is parallel with mould opening and closing direction, is accordingly stretched with mold clamping force.Conjunction is provided with least one pull bar 16 Mould force snesor 18.Matched moulds force snesor 18 is, for example, deformeter, and the reality of mold clamping force is detected by detecting the strain of pull bar 16 Actual value, and the signal for representing the actual value is exported to control device 80.Control device 80 carries out feedback control, to cause mold clamping force Actual value and setting value between deviation be zero.
In addition, matched moulds force snesor 18 is not limited to detect the deformeter of the strain of pull bar 16.It is, for example, possible to use load is passed Sensor is used as matched moulds force snesor.
Toggle mechanism 20 is disposed between movable pressure plate 13 and rear fender 15, and be separately mounted to movable pressure plate 13 and after On pressing plate 15.Toggle mechanism 20 is stretched along mould opening and closing direction, and thus movable pressure plate 13 is retreated with respect to rear fender 15.
Matched moulds motor 26 is by driving toggle mechanism 20 to move movable pressure plate 13.In matched moulds motor 26 and toggle mechanism 20 Between set ball screw framework as by the rotary motion of matched moulds motor 26 be converted to linear motion and pass to toggle mechanism 20 motion converter section.
Matched moulds motor 26 has encoder 26a.The reality of the anglec of rotation of the output shaft of encoder 26a detection matched moulds motor 26 Value, and the signal for representing the actual value is exported to control device 80.Control device 80 carries out feedback control, so that the reality of the anglec of rotation The deviation of actual value and setting value is zero.
In mold closing process, drive matched moulds motor 26 and act toggle mechanism 20, movable pressure plate 13 is advanced.Moveable die 33, which are relatively fixed mould 32, approaches.
In matched moulds process, driving matched moulds motor 26, is produced in the state of moveable die 33 and fixing mould 32 are contacted The mold clamping force that the propulsive force of matched moulds motor 26 is multiplied with toggle multiplying power.Matched moulds state fixing mould 32 and moveable die 33 it Between be formed with cavity space 34.In matched moulds process, process, pressurize process, refrigerating work procedure, measurement process can be filled.
Mold in process, driving matched moulds motor 26 acts toggle mechanism 20, retreats movable pressure plate 13.Afterwards, can be with Carry out ejection process.
In addition, mold closing mechanism 10 can have hydraulic cylinder to replace matched moulds motor 26 as the drive division of movable pressure plate 13. Also, mold closing mechanism 10 can also be used with linear motor in mould opening and closing, used in matched moulds with electromagnet.Pass through electromagnet Absorption affinity when producing mold clamping force, the magnetic force of the magnetic field intensity on detection electromagnet periphery can be used to pass as matched moulds force snesor Sensor.Also, the mold clamping force that the propulsive force of matched moulds motor 26 is multiplied by toggle multiplying power is produced in the present embodiment, but can also There is no toggle mechanism 20, amplify without the propulsive force to matched moulds motor 26 and be directly passed to movable pressure plate 13.
Then, referring again to Fig. 1, injection device 50 is illustrated.In the explanation of injection device 50, with mold closing mechanism 10 explanation is different, and the moving direction (left in Fig. 1) of the screw rod 52 during filling is front, the shifting of the screw rod 52 during measuring Dynamic direction (right in Fig. 1) illustrates for rear.
Injection device 50 has cylinder body 51, screw rod 52, measure motor 53, injection motor 54 and pressure sensor 55. In present embodiment, screw rod 52 is the movable member described in technical scheme, and injection motor 54 is the drive described in technical scheme Dynamic portion.
Cylinder body 51 heats the moulding material supplied from supply mouth 51a.Supply mouth 51a formation is at the rear portion of cylinder body 51.In cylinder The heating sources such as having heaters are set on the periphery of body 51.Nozzle 56 is set on the front end of cylinder body 51.
It is freely and free to advance or retreat that screw rod 52 is adapted to the revolution in cylinder body 51.
Measure motor 53 turns round screw rod 52.Measure motor 53 can have encoder 53a.Encoder 53a detection meterings The actual value of the rotating speed of the output shaft of motor 53, and the signal output of the actual value will be represented to control device 80.Control device 80 can carry out feedback control in measurement process, so that the actual value of rotating speed and the deviation of setting value are zero.
Injection motor 54 makes screw rod 52 retreat.Rotation by motor 54 is injected is set between screw rod 52 and injection motor 54 Motion is converted to the motion converter section of the linear motion of screw rod 52.Injection motor 54 can have encoder 54a.Encoder 54a The actual value of the pace of screw rod 52 is detected by the actual value of the rotating speed for the output shaft for detecting injection motor 54, and by table Show the signal output of the actual value to control device 80.Control device 80 can carry out feedback control in filling work procedure, so that The actual value of the pace of screw rod 52 and the deviation of setting value are zero.
The actual value of the back pressure (pressure for the resin that screw rod 52 is pushed) of the detection screw rod 52 of pressure sensor 55, and will represent The signal output of the actual value is to control device 80.Control device 80 can carry out feedback control in pressurize process, so that spiral shell Deviation between the actual value and setting value of the back pressure of bar 52 is zero.
In filling work procedure, driving injects motor 54 and screw rod 52 is advanced, and will be accumulated in the liquid in the front of screw rod 52 Moulding material is filled into the cavity space 34 of die device 30.The setting value of the pace of screw rod 52 can be certain, also may be used With according to screw position or elapsed time change.When screw rod 52 proceeds to precalculated position (so-called V/P switching positions), start to protect Press process.During alternatively, it is also possible to reach the scheduled time in the elapsed time started away from filling work procedure, start pressurize process.
In pressurize process, driving injects motor 54 and pushes screw rod 52 forwards, to the shaping in cavity space 34 Material applies pressure.The moulding material for the amount for causing volume contraction because of the cooling of moulding material can be supplemented.The back of the body of screw rod 52 The setting value of pressure can be certain, can also periodically be changed according to elapsed time etc..The entrance of cavity space 34 is (so-called Cast gate) sealed, the adverse current of the moulding material from cavity space 34 is prevented, process is begun to cool down afterwards.In refrigerating work procedure Measurement process can be carried out.
In measurement process, drive measure motor 53 and turn round screw rod 52, it is spiral helicine on screw rod 52 along being formed Groove conveys moulding material forwards.As it does so, moulding material is melted gradually.The moulding material of liquid is transported to before screw rod 52 The front portion of cylinder body 51 is arrived in square and accumulation, and screw rod 52 is retreated.The setting value of the rotating speed of screw rod 52 can be necessarily can also be according to spiral shell Bar position or elapsed time change.
In measurement process, in order to limit the drastically retrogressing of screw rod 52, injection motor 54 can be driven and screw rod 52 is applied Plus predetermined back pressure.When screw rod 52 backs to precalculated position and accumulates the moulding material of scheduled volume in the front of screw rod 52, meter Amount process terminates.
Then, control device 80 is illustrated.Control device 80 is used as the detected value of monitoring matched moulds force snesor 18 Mold clamping force monitoring unit and play a role.Furthermore it is possible to be provided separately mold clamping force monitoring unit with control device 80.
When acting injection motor 54 moulding material is pressed into the die device 30 of matched moulds state, moulding material Flowed into cavity space 34, the pressure of the moulding material of cavity space 34 is uprised.Somewhat beaten by the pressure mould device 30 When opening, correspondingly pull bar 16 is stretched.When pull bar 16 is stretched, the detected value of matched moulds force snesor 18 changes.Therefore, horse is injected Up to the pressure correlation of the detected value and the moulding material of cavity space 34 of the matched moulds force snesor 18 in 54 action.Cavity space The pressure of 34 moulding material is higher, and the weight of products formed is heavier.Therefore, the matched moulds force snesor in the action of injection motor 54 18 detected value is related to the weight of products formed.
Therefore, the detected value evaluation shaping of the matched moulds force snesor 18 in action of the control device 80 based on injection motor 54 The weight of product.The detected value or evaluation result of matched moulds force snesor 18 may be displayed on image display device 72.Also, each note The peak shifts for the matched moulds force snesor 18 hit can be shown in image display device 72 with curve map.
For example, control device 80 can the variation based on the peak value of the matched moulds force snesor 18 in each injection, evaluation shaping The weight stability of product.For example, control device 80 is evaluated as weight stability when being worth following on the basis of the amplitude of fluctuation of peak value Well, when the amplitude of fluctuation of peak value exceedes a reference value, it is evaluated as weight stability poor.
Also, control device 80 can the peak value based on the matched moulds force snesor 18 in each injection evaluate the weight of each products formed Whether amount is in specification.For example, the weight of products formed is evaluated as when control device 80 is in the range of on the basis of peak value in specification, When peak value is outside reference range, the weight of products formed is evaluated as outside specification.Reference range is obtained by experiment etc., and reading is used Data in the storage part of control device 80.
So, according to present embodiment, the weight of products formed is evaluated due to the detected value based on matched moulds force snesor 18, Therefore, it is possible to obtain the information useful to injection moulding.
In addition, in the evaluation of present embodiment, using the peak value of matched moulds force snesor 18, but it is also possible to using peak value with Outer value.Such as value, elapsed time for starting away from filling work procedure at the time of can using the screw position to reach precalculated position are arrived Value at the time of elapsed time started up to the value at the time of scheduled time, away from pressurize process reaches the scheduled time etc..
Control device 80 can change injection based on the detected value of the matched moulds force snesor 18 in the action for injecting motor 54 Setting value used in the control of motor 54.Control device 80 can will confirm that presentation of information exists before change setting In image display device 72.Afterwards, input unit 71 can be when receiving the predetermined input operation based on user, control device 80 change settings, when not can confirm that the predetermined input operation based on user, control device 80 can not change setting.
For example, the peakedness ratio a reference value hour of matched moulds force snesor 18 in the injection of n-th, cavity space 34 into The filling weight of section bar material is small, therefore, and control device 80 is to the injection motor 54 in the injection of (including n-th) after n-th Control used in setting value changed.Being capable of calibration setup value.Control device 80 can the conjunction based on a certain injection Setting used in the detected value of mould force snesor 18, the control for the injection motor 54 that a certain injection or next injection can be corrected Definite value.Control device 80 can with real time correction setting value, can also during injecting calibration setup value.It is used as the setting of correction Value, such as the back pressure that can enumerate the screw rod 52 in the pace of screw rod 52 of filling work procedure, pressurize process.Filling work procedure When the pace of screw rod 52 accelerates, the pressure of pushing forming material becomes strong, the filling weight of the moulding material of cavity space 34 Become big.Also, when the back pressure of the screw rod 52 in pressurize process is uprised, the filling weight of the moulding material of cavity space 34 becomes Greatly.
In addition, utilizing the peak value of matched moulds force snesor 18 in the change of the setting value of present embodiment, but it is also possible to make With the value beyond peak value.For example, it is also possible to the warp started using the value at screw position arrival precalculated position moment, away from filling work procedure The elapsed time for cross value of time at the time of reach the scheduled time, starting away from pressurize process reaches the value at the time of scheduled time Deng.
More than, the embodiment to injection (mo(u)lding) machine is illustrated, but the present invention is not limited to above-mentioned embodiment, In the range of the purport of the invention that technical scheme is recorded, various modifications, improvement can be carried out.
The injection (mo(u)lding) machine of such as above-mentioned embodiment is that mould opening and closing direction is horizontal horizontal, but it is also possible to for mould opening and closing Direction is vertically vertical.
Also, the injection device of above-mentioned embodiment is coaxial screw but it is also possible to be preformed formula.The injection of preformed formula Device supplies the moulding material that is melted in plasticizing cylinder to injection cylinder, and from injection cylinder into die device injecting forming material. In plasticizing cylinder, screw rod be adapted to revolution freely or turn round it is freely and free to advance or retreat, in injection cylinder, plunger be adapted into Move back freely.In preformed formula, plunger makes the motor that plunger is moved equivalent to technology equivalent to the movable member described in technical scheme Driving part described in scheme.

Claims (5)

1. a kind of injection (mo(u)lding) machine, possesses:
In movable member, the die device that moulding material is pressed into matched moulds state;
Drive division, moves the movable member;
Matched moulds force snesor, detection acts on the mold clamping force of above-mentioned die device;And
Mold clamping force monitoring unit, monitors the detected value of above-mentioned matched moulds force snesor,
Peak shifts of the mold clamping force monitoring unit based on the above-mentioned matched moulds force snesor in each injection, the weight for evaluating products formed is steady It is qualitative.
2. injection (mo(u)lding) machine as claimed in claim 1,
Above-mentioned mold clamping force monitoring unit calculates the amplitude of fluctuation of the peak value of the above-mentioned matched moulds force snesor in each injection.
3. injection (mo(u)lding) machine as claimed in claim 2,
Above-mentioned mold clamping force monitoring unit is compared to the amplitude of fluctuation of the peak value of above-mentioned matched moulds force snesor with a reference value.
4. injection (mo(u)lding) machine as claimed in claim 1 or 2,
The detected value of above-mentioned matched moulds force snesor in above-mentioned action of the mold clamping force monitoring unit based on above-mentioned drive division, is changed above-mentioned Setting value used in the control of drive division.
5. a kind of injection (mo(u)lding) machine, possesses:
In movable member, the die device that moulding material is pressed into matched moulds state;
Drive division, drives the movable member;
Matched moulds force snesor, detection acts on the mold clamping force of above-mentioned die device;And
Mold clamping force monitoring unit, monitors the detected value of above-mentioned matched moulds force snesor,
The variation of peak value of the above-mentioned mold clamping force monitoring unit based on the above-mentioned matched moulds force snesor in each injection, changes above-mentioned drive division Control used in setting value.
CN201410465140.6A 2014-01-21 2014-09-12 Injection (mo(u)lding) machine Active CN104786423B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014-009023 2014-01-21
JP2014009023A JP6289917B2 (en) 2014-01-21 2014-01-21 Injection molding machine

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Publication Number Publication Date
CN104786423A CN104786423A (en) 2015-07-22
CN104786423B true CN104786423B (en) 2017-09-08

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CN (1) CN104786423B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800002639A1 (en) * 2018-02-13 2019-08-13 Inglass Spa Plastic material injection molding process and equipment
TWI711525B (en) * 2019-05-22 2020-12-01 國立高雄科技大學 A method for online quality monitoring and controlling for molded part during injection molding

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0866951A (en) * 1994-08-31 1996-03-12 Sumitomo Heavy Ind Ltd Control method of injection molding machine
JP3293415B2 (en) * 1995-07-21 2002-06-17 宇部興産株式会社 How to set the optimal filling resin amount for injection compression molding
US6048476A (en) * 1998-03-16 2000-04-11 Husky Injection Molding Systems Ltd. Clamp pressure optimization system and method
JP4668261B2 (en) * 2005-03-16 2011-04-13 住友重機械工業株式会社 Molding condition setting method and injection molding machine control method
JP2008001028A (en) * 2006-06-23 2008-01-10 Sumitomo Heavy Ind Ltd Method for detecting abnormality of injection molding machine
JP2012250360A (en) * 2011-05-31 2012-12-20 Toshiba Mach Co Ltd Molding machine, and injection control method
JP5855993B2 (en) * 2012-03-26 2016-02-09 住友重機械工業株式会社 Injection molding machine

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JP2015136842A (en) 2015-07-30
JP6289917B2 (en) 2018-03-07

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