CN104816443A - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
- Publication number
- CN104816443A CN104816443A CN201510002203.9A CN201510002203A CN104816443A CN 104816443 A CN104816443 A CN 104816443A CN 201510002203 A CN201510002203 A CN 201510002203A CN 104816443 A CN104816443 A CN 104816443A
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- CN
- China
- Prior art keywords
- pressing plate
- pressure plate
- main body
- mounting section
- mold mounting
- 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.)
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Classifications
-
- 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
- B29C45/1742—Mounting of moulds; Mould supports
- B29C45/1744—Mould support platens
-
- 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
- B29C45/66—Mould opening, closing or clamping devices mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an injection moulding machine able to concentrate a force on the center portion of a pressure plate. The injection moulding machine of the invention comprises the pressure plate equipped with a mould. The pressure plate comprises a mould installing portion, a pressure plate main body arranged to be opposite to the mould installing portion and a connecting portion transmitting forces between the mould installing portion and the pressure plate main body in mould compounding. The outer surface of the connecting portion has a recessed portion lower than the periphery.
Description
Technical field
The application advocates the priority of No. 2014-019526th, the Japanese patent application based on application on February 4th, 2014.The full content of its application is by reference to being applied in this description.
The present invention relates to a kind of injection (mo(u)lding) machine.
Background technology
Injection (mo(u)lding) machine has fixation clip and movable pressure plate.The face opposed with movable pressure plate of fixation clip is provided with cover half.The face opposed with fixation clip of movable pressure plate is provided with dynamic model.Die device is formed by cover half and dynamic model.Injection (mo(u)lding) machine is retreated relative to fixation clip by making movable pressure plate, carries out the mold closing of die device, matched moulds and die sinking (such as, referenced patent document 1).
Patent document 1: No. 2005/090052nd, International Publication
Fixation clip and movable pressure plate etc. are provided with the pressing plate of mould, the holding capacity when matched moulds.In the past, be difficult to exert all one's strength and concentrate on the central portion of pressing plate.
Summary of the invention
The present invention completes in view of above-mentioned problem, and its main purpose is the injection (mo(u)lding) machine providing a kind of central portion concentrating on pressing plate of can exerting all one's strength.
In order to solve above-mentioned problem, a mode according to the present invention provides a kind of injection (mo(u)lding) machine, and it has:
The pressing plate of mould is installed,
When this pressing plate has the mold mounting section pressing plate main body opposed with this mold mounting section and a matched moulds between described mold mounting section and described pressing plate main body the linking part of transmitting force,
The outer surface of described linking part has the recess than peripheral recesses.
Invention effect
According to a mode of the present invention, provide a kind of injection (mo(u)lding) machine of the central portion concentrating on pressing plate of can exerting all one's strength.
Accompanying drawing explanation
Fig. 1 is the figure of the state at the end of the die sinking of the injection (mo(u)lding) machine representing one embodiment of the present invention.
Fig. 2 is the figure of the state at the end of the mold closing of the injection (mo(u)lding) machine representing one embodiment of the present invention.
Fig. 3 is the side view of the movable pressure plate of one embodiment of the present invention.
Fig. 4 is the top view of the movable pressure plate of one embodiment of the present invention.
Fig. 5 is the upward view of the movable pressure plate of one embodiment of the present invention.
Fig. 6 is the profile of the VI-VI line along Fig. 3.
In figure: 10-injection (mo(u)lding) machine, 11-framework, 12-fixation clip, 121-mold mounting section, 122-pressing plate main body, 123-linking part, 126-groove portion, 127-upper recess, 128-lower concave part, the horizontal recess of 129-, 13-movable pressure plate, 131-mold mounting section, 132-pressing plate main body, 133-linking part, 136-groove portion, 137-upper recess, 138-lower concave part, the horizontal recess of 139-, 30-die device, 32-cover half, 33-dynamic model.
Detailed description of the invention
Below, be described with reference to accompanying drawing to for implementing mode of the present invention, in each accompanying drawing, the identical or corresponding symbol for identical or corresponding structure mark also omits the description.
Fig. 1 is the figure of the state at the end of the die sinking of the injection (mo(u)lding) machine representing one embodiment of the present invention.Fig. 2 is the figure of the state at the end of the mold closing of the injection (mo(u)lding) machine representing one embodiment of the present invention.Below, the moving direction of the movable pressure plate 13 during mold closing is set to front, the moving direction of the movable pressure plate 13 during die sinking is set to rear to be described.In the following description, fore-and-aft direction, left and right directions, above-below direction are orthogonal direction.
Injection (mo(u)lding) machine 10, to the moulding material of filling liquid in the cavity space in die device 30, molds products formed by making the mold material cures of filling.Die device 30 has cover half 32 and dynamic model 33.Cavity space is formed between cover half 32 and dynamic model 33.
Such as shown in Fig. 1 and Fig. 2, injection (mo(u)lding) machine 10 has framework 11, fixation clip 12, movable pressure plate 13, rear fender 15, connecting rod 16, toggle mechanism 20, matched moulds motor 26 and control device 80.
Fixation clip 12 is fixed on framework 11.Fixation clip 12 is provided with cover half 32.
Movable pressure plate 13 is fixed on and moves slide block 14 freely along the guiding piece be layed on framework 11 (such as guide rail) 17, and free to advance or retreat relative to fixation clip 12.Movable pressure plate 13 is provided with dynamic model 33.
Injection (mo(u)lding) machine 10 is retreated relative to fixation clip 12 by making movable pressure plate 13, carries out the mold closing of die device 30, matched moulds and die sinking.
Rear fender 15 links via many (such as 4) connecting rods 16 and fixation clip 12, and mounting is free to advance or retreat on the frame 11.In addition, rear fender 15 also can be fixed on and move on slide block freely along the guiding piece be layed on framework 11.The guiding piece of rear fender 15 also can share with the guiding piece 17 of movable pressure plate 13.The slide block of rear fender 15 also can be different from the slide block 14 of movable pressure plate 13.
In addition, in present embodiment, fixation clip 12 is fixed on framework 11, and rear fender 15 is free to advance or retreat relative to framework 11, but also can be that rear fender 15 is fixed on framework 11, and fixation clip 12 is free to advance or retreat relative to framework 11.
Connecting rod 16 is parallel to mould opening and closing direction, and extends according to mold clamping force.At least 1 connecting rod 16 is provided with mold clamping force sensor 18.Mold clamping force sensor 18 is such as strain transducer, is detected the actual value of mold clamping force by the strain detecting connecting rod 16, and exports the signal of its actual value of display to control device 80.Control device 80 carries out FEEDBACK CONTROL, with the deviation of the actual value and setting value that make mold clamping force for zero.
In addition, mold clamping force sensor 18 is not limited to the strain transducer of the strain detecting connecting rod 16.Such as, load cell also can be used as mold clamping force sensor.
Toggle mechanism 20 is disposed between movable pressure plate 13 and rear fender 15, and is installed on movable pressure plate 13 and rear fender 15 respectively.Flexible along mould opening and closing direction by toggle mechanism 20, movable pressure plate 13 is retreated relative to rear fender 15.
Matched moulds motor 26 drives movable pressure plate 13 via toggle mechanism 20.Between matched moulds motor 26 and toggle mechanism 20, be provided with as the rotary motion of matched moulds motor 26 being converted to rectilinear motion and being passed to the ball screw framework of the motion converter section of toggle mechanism 20.
Matched moulds motor 26 has encoder 26a.Encoder 26a detects the actual value of the anglec of rotation of the output shaft of matched moulds motor 26, and exports the signal of its actual value of display to control device 80.Control device 80 carries out FEEDBACK CONTROL, with the deviation of the actual value and setting value that make the anglec of rotation for zero.
Control device 80 has the storage parts such as memory and CPU, performs the control program being stored in storage part control matched moulds motor 26 etc. by making CPU.
In mold closing operation, control device 80 drives matched moulds motor 26 to make toggle mechanism 20 start, thus movable pressure plate 13 is advanced.Dynamic model 33 is close to cover half 32.
In matched moulds operation, drive matched moulds motor 26 under the state that control device 80 contacts with cover half 32 at dynamic model 33, and the motive force producing matched moulds motor 26 is multiplied by the mold clamping force of toggle multiplying power.Cavity space is formed between the cover half 32 and dynamic model 33 of matched moulds state.The moulding material of filling liquid in cavity space, molds products formed by making the mold material cures of filling.
In die sinking operation, control device 80 drives matched moulds motor 26 to make toggle mechanism 20 start, thus movable pressure plate 13 is retreated.After die sinking, release products formed from die device 30.
In addition, in injection (mo(u)lding) machine 10, as the drive division of movable pressure plate 13, hydraulic cylinder can be had to replace matched moulds motor 26.Further, injection (mo(u)lding) machine 10 also can have mould opening and closing linear motor and matched moulds electromagnet.When utilizing the absorption affinity of electromagnet to produce mold clamping force, the Magnetic Sensor of the magnetic field intensity detecting electromagnet periphery also can be used as mold clamping force sensor.Further, in the present embodiment, the propulsive force producing matched moulds motor 26 is multiplied by the mold clamping force of toggle multiplying power, but also can not have toggle mechanism 20, also can be that the propulsive force of matched moulds motor 26 is not directly passed to movable pressure plate 13 by amplification.
Then, with reference to figure 3 ~ Fig. 6, movable pressure plate 13 is described.Fig. 3 is the side view of the movable pressure plate of one embodiment of the present invention.Fig. 4 is the top view of the movable pressure plate of one embodiment of the present invention.Fig. 5 is the upward view of the movable pressure plate of one embodiment of the present invention.Fig. 6 is the profile of the VI-VI line along Fig. 3.
Movable pressure plate 13 has mold mounting section 131, pressing plate main body 132, linking part 133 and leg 134.In the present embodiment, mold mounting section 131, pressing plate main body 132, linking part 133 and leg 134 form as one, but also split can be formed and link.
The mask opposed with fixation clip 12 of mold mounting section 131 has the die mounting surface being provided with dynamic model 33.Mold mounting section 131 can be fixed on slide block 14.In order to avoid contacting with connecting rod 16, mold mounting section 131 is formed with breach and through hole.In addition, in the present embodiment, both breach and through hole are all formed on mold mounting section 131, but also can be that one of them is formed on mold mounting section 131.
Pressing plate main body 132 is disposed in the rear of mold mounting section 131, and opposed with mold mounting section 131.Pressing plate main body 132 can be fixed on slide block 14 via leg 134.As shown in Figure 6, leg 134 is formed with through hole, and is inserted through connecting rod 16 in this through hole.In addition, in order to avoid contacting with connecting rod 16, leg 134 can be formed with breach.
The top of pressing plate main body 132 and bottom have load receiving portion 135.Each load receiving portion 135 is provided with the pole forming toggle mechanism 20.Pressing plate main body 132 when matched moulds via linking part 133 pushing against mold installation portion 131.
Linking part 133 is disposed between mold mounting section 131 and pressing plate main body 132, and during matched moulds between mold mounting section 131 and pressing plate main body 132 transmitting force.Linking part 133 can be fixed on slide block 14 via leg 134.As shown in Figure 6, can in the lateral direction across being interval with multiple (such as 2) linking part 133.In addition, linking part 133 can be formed as frame-shaped, and the shape of linking part 133 also can be of all kinds.
Linking part 133 can form open groove portion 136, both ends between mold mounting section 131 and pressing plate main body 132.The long side direction in groove portion 136 can be set to left and right directions.As shown in FIG. 1 to 3, groove portion 136 can be formed respectively at the upper surface of movable pressure plate 13 and lower surface.By forming groove portion 136, the power of pressing plate main body 132 pushing against mold installation portion 131 concentrates on the above-below direction central portion of mold mounting section 131, and can improve the uniformity of the mold clamping force of die device 30.
In addition, the position in groove portion 136 is not particularly limited.Such as, groove portion 136 can be formed at the left and right sides of movable pressure plate 13.Now, the power of pressing plate main body 132 pushing against mold installation portion 131 concentrates on the left and right directions central portion of mold mounting section 131, and can improve the uniformity of the mold clamping force of die device 30.Groove portion 136 can be formed at upper and lower surface and the left and right sides of movable pressure plate 13.Further, groove portion 136 also only can be formed at any surface in the upper and lower surface of movable pressure plate 13, also only can be formed at any surface in the left and right sides of movable pressure plate 13.
The outer surface of linking part 133 has the recess than peripheral recesses.Be formed with 1 with upper recess.Such as shown in Fig. 6, the upper surface of linking part 133 has upper recess 137, and lower surface has lower concave part 138, and lateral surface has horizontal recess 139.
Upper recess 137 can be formed at the bottom in the groove portion 136 formed at the upper surface of movable pressure plate 13.Upper recess 137 can be the open channel-shaped in both ends.The long side direction of upper recess 137 can be set to left and right directions.
Lower concave part 138 can be formed at the bottom in the groove portion 136 formed at the lower surface of movable pressure plate 13.Lower concave part 138 can be the open channel-shaped in both ends.The long side direction of lower concave part 138 can be set to left and right directions.
By forming upper recess 137 and lower concave part 138, the power of pressing plate main body 132 pushing against mold installation portion 131 concentrates on the above-below direction central portion of mold mounting section 131, and can improve the uniformity of the mold clamping force of die device 30.
Horizontal recess 139 is formed at the lateral surface of a pair linking part 133.The power of pressing plate main body 132 pushing against mold installation portion 131 concentrates on the left and right directions central portion of mold mounting section 131, and can improve the uniformity of the mold clamping force of die device 30.
As shown in Figure 6, when observing from the section that the action direction (fore-and-aft direction) with mold clamping force is vertical, the both ends not opening of horizontal recess 139, can have protuberance at the right and left of horizontal recess 139.Rigidity can be suppressed to decline, and improve the uniformity of the mold clamping force of die device 30.
In addition, when observing from the section vertical with fore-and-aft direction, only can have protuberance in the side of horizontal recess 139.Further, when observing from the section vertical with fore-and-aft direction, only protuberance can be had at least side of upper recess 137 and lower concave part 138.
Then, refer again to Fig. 1 ~ Fig. 2 to be described fixation clip 12.Fixation clip 12 has mold mounting section 121, pressing plate main body 122 and linking part 123 in the same manner as movable pressure plate 13.In the present embodiment, mold mounting section 121, pressing plate main body 122 and linking part 123 form as one, but also split can be formed and link.
The mask opposed with movable pressure plate 13 of mold mounting section 121 has the die mounting surface being provided with cover half 32.In order to avoid mold mounting section 121 contacts with connecting rod 16, in the position being equipped with connecting rod 16, there is through hole.In addition, also can form breach to replace through hole, also can form both through hole and breach.
Pressing plate main body 122 is disposed in the front of mold mounting section 121, and opposed with mold mounting section 121.Pressing plate main body 122 can be fixed on framework 11.In addition, when rear fender 15 is fixed on framework 11, pressing plate main body 122 can be free to advance or retreat relative to framework 11, and pressing plate main body 122 also can be placed on framework 11, also can be fixed on and move slide block freely along guiding piece 17.
Pressing plate main body 122 is formed with through hole, can inserted through connecting rod 16 in this through hole.Pressing plate main body 122 is fixed in the leading section of connecting rod 16.Mold mounting section 121 pushes back via linking part 123 when matched moulds by pressing plate main body 122.
Linking part 123 is disposed between mold mounting section 121 and pressing plate main body 122, and during matched moulds between mold mounting section 121 and pressing plate main body 122 transmitting force.Can in the lateral direction across being interval with multiple (such as 2) linking part 123 in the same manner as linking part 133.In addition, linking part 123 can be formed as frame-shaped, and the shape of linking part 123 also can be of all kinds.
Linking part 123 can form open groove portion 126, both ends between mold mounting section 121 and pressing plate main body 122.The long side direction in groove portion 126 can be set to left and right directions.As shown in Figures 1 and 2, groove portion 126 can be formed respectively at the upper surface of fixation clip 12 and lower surface.By forming groove portion 126, during matched moulds, the power that mold mounting section 121 pushes back is concentrated on the above-below direction central portion of mold mounting section 121 by pressing plate main body 122, and can improve the uniformity of the mold clamping force of die device 30.
In addition, the position in groove portion 126 is not particularly limited.Such as, groove portion 126 can be formed at the left and right sides of fixation clip 12.Now, during matched moulds, the power that mold mounting section 121 pushes back is concentrated on the left and right directions central portion of mold mounting section 121 by pressing plate main body 122, and can improve the uniformity of the mold clamping force of die device 30.Groove portion 126 can be formed at upper and lower surface and the left and right sides of fixation clip 12.Further, groove portion 126 also only can be formed at any surface in the upper and lower surface of fixation clip 12, also only can be formed at any surface in the left and right sides of fixation clip 12.
The outer surface of linking part 123 has the recess than peripheral recesses.Be formed with the recess of more than 1.Such as shown in Fig. 1 and Fig. 2, the upper surface of linking part 123 has upper recess 127, and lower surface has lower concave part 128, and lateral surface has horizontal recess 129.
Upper recess 127 can be formed at the bottom in the groove portion 126 formed at the upper surface of fixation clip 12.Upper recess 127 can be the open channel-shaped in both ends.The long side direction of upper recess 127 can be set to left and right directions.
Lower concave part 128 can be formed at the bottom in the groove portion 126 formed at the lower surface of fixation clip 12.Lower concave part 128 can be the open channel-shaped in both ends.The long side direction of lower concave part 128 can be set to left and right directions.
By forming upper recess 127 and lower concave part 128, the power that mold mounting section 121 pushes back is concentrated on the above-below direction central portion of mold mounting section 121 by pressing plate main body 122, and can improve the uniformity of the mold clamping force of die device 30.
Horizontal recess 129 is formed at the lateral surface of a pair linking part 123.The power that mold mounting section 121 pushes back is concentrated on the left and right directions central portion of mold mounting section 121 by pressing plate main body 122, and can improve the uniformity of the mold clamping force of die device 30.
When observing from the section that the action direction (fore-and-aft direction) with mold clamping force is vertical, the both ends not opening of horizontal recess 129, can have protuberance at the right and left of horizontal recess 129.Rigidity can be suppressed to decline, and improve the uniformity of the mold clamping force of die device 30.
In addition, when observing from the section vertical with fore-and-aft direction, only can have protuberance in the side of horizontal recess 129.Further, when observing from the section vertical with fore-and-aft direction, only protuberance can be had at least side of upper recess 127 and lower concave part 128.
Above, the embodiment etc. of injection (mo(u)lding) machine is illustrated, but the present invention is not limited to above-mentioned embodiment etc., can various distortion and improvement be carried out in the teachings of the present invention described in technical scheme.
Such as, the horizontal injection forming machine of the injection (mo(u)lding) machine of above-mentioned embodiment to be mould opening and closing direction be horizontal direction, but also can be mould opening and closing direction be the vertical type injection molding machine of vertical.
Claims (5)
1. an injection (mo(u)lding) machine, it has:
The pressing plate of mould is installed,
When this pressing plate has the mold mounting section pressing plate main body opposed with this mold mounting section and a matched moulds between described mold mounting section and described pressing plate main body the linking part of transmitting force,
The outer surface of described linking part has the recess than peripheral recesses.
2. injection (mo(u)lding) machine according to claim 1, wherein,
In the lateral direction across being interval with multiple described linking part.
3. injection (mo(u)lding) machine according to claim 1 and 2, wherein,
Described linking part forms open groove portion, both ends between described mold mounting section and described pressing plate main body,
Recess is formed in the bottom in this groove portion.
4. injection (mo(u)lding) machine according to claim 3, wherein,
The recess formed in the bottom in described groove portion is the channel-shaped that both ends open.
5. the injection (mo(u)lding) machine according to claim 3 or 4, wherein,
Described groove portion is formed respectively in the upper and lower surface of described pressing plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-019526 | 2014-02-04 | ||
| JP2014019526A JP6177703B2 (en) | 2014-02-04 | 2014-02-04 | Injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104816443A true CN104816443A (en) | 2015-08-05 |
| CN104816443B CN104816443B (en) | 2017-05-17 |
Family
ID=53727040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510002203.9A Active CN104816443B (en) | 2014-02-04 | 2015-01-04 | Injection molding machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6177703B2 (en) |
| KR (2) | KR20150091978A (en) |
| CN (1) | CN104816443B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3576778B2 (en) * | 1997-12-08 | 2004-10-13 | 住友重機械工業株式会社 | Mold clamping device |
| JP3715246B2 (en) * | 2001-07-13 | 2005-11-09 | 住友重機械工業株式会社 | Movable mold support device for injection molding machine |
| US7080978B2 (en) * | 2003-04-17 | 2006-07-25 | Husky Injection Molding Systems Ltd. | Platen |
| US20070158875A1 (en) | 2004-03-19 | 2007-07-12 | Sumitomo Heavy Industries, Ltd. | Mold-clamping apparatus and method of adjusting mold thickness |
| JP4047892B2 (en) * | 2006-03-23 | 2008-02-13 | ファナック株式会社 | Molding device for injection molding machine |
| JP4107509B2 (en) * | 2006-03-24 | 2008-06-25 | 株式会社日本製鋼所 | Molding device for injection molding machine |
| JP2008093987A (en) * | 2006-10-12 | 2008-04-24 | Sumitomo Heavy Ind Ltd | Mold clamping device |
| JP2008093986A (en) * | 2006-10-12 | 2008-04-24 | Sumitomo Heavy Ind Ltd | Mold clamping device |
| KR20080098968A (en) * | 2007-05-08 | 2008-11-12 | 엘에스엠트론 주식회사 | Moving platen of clamping system |
| KR101000626B1 (en) * | 2008-08-26 | 2010-12-10 | 엘에스엠트론 주식회사 | Ejector for injection molding machine and moving plate including the same |
| JP5456289B2 (en) * | 2008-09-09 | 2014-03-26 | 住友重機械工業株式会社 | Mold clamping device and movable platen |
| JP5276953B2 (en) * | 2008-11-06 | 2013-08-28 | 東芝機械株式会社 | Clamping device and injection molding machine |
-
2014
- 2014-02-04 JP JP2014019526A patent/JP6177703B2/en active Active
-
2015
- 2015-01-02 KR KR1020150000123A patent/KR20150091978A/en active Search and Examination
- 2015-01-04 CN CN201510002203.9A patent/CN104816443B/en active Active
-
2017
- 2017-06-15 KR KR1020170075606A patent/KR102174128B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JP6177703B2 (en) | 2017-08-09 |
| CN104816443B (en) | 2017-05-17 |
| JP2015145122A (en) | 2015-08-13 |
| KR20150091978A (en) | 2015-08-12 |
| KR20170073560A (en) | 2017-06-28 |
| KR102174128B1 (en) | 2020-11-04 |
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