JPH09155867A - Pellet supply device of molding machine - Google Patents
Pellet supply device of molding machineInfo
- Publication number
- JPH09155867A JPH09155867A JP7337674A JP33767495A JPH09155867A JP H09155867 A JPH09155867 A JP H09155867A JP 7337674 A JP7337674 A JP 7337674A JP 33767495 A JP33767495 A JP 33767495A JP H09155867 A JPH09155867 A JP H09155867A
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- vacuum
- vacuum container
- hopper
- screw assembly
- 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.)
- Pending
Links
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、合成樹脂の成形
に際し、可塑化中の樹脂に空気が混入して樹脂を酸化
（樹脂焼け）させたり、製品中に気泡の巻き込みを防止
するペレットの真空供給装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pellet vacuum for preventing air from being mixed with air during plasticizing due to air being mixed with the resin being plasticized (resin burning) or entrainment of air bubbles in the product. Regarding the feeding device.
【０００２】[0002]
【従来の技術】従来から樹脂の可塑化中に空気が混入し
て樹脂焼けを起こしたり、製品中に気泡ができて不良品
が出るのを防止するために、ペレットを可塑化スクリュ
アセンブリへ供給する際、真空状態で供給することは知
られている。図４は公知のペレットの真空供給装置であ
る。この装置は可塑化スクリュアセンブリ２１のホッパ
口２２の上端にペレットＰを貯留する真空ホッパ２３が
接続されている。真空ホッパ２３には検出子２４aでペ
レットのレベルを検出するレベルスイッチ２４が設置さ
れており、電磁弁２５を介して真空ポンプ２６に、ま
た、電磁弁２７を介して大気にそれぞれ接続されてい
る。２８はローダ用ホッパでシャッタ２９を介して前記
真空ホッパ２３の頂部に設置されている。シャッタ２９
はシャッタ開閉シリンダ２９a、シャッタハウジング２
９b、シャッタプレート２９cから構成されている。2. Description of the Related Art Conventionally, pellets are supplied to a plasticizing screw assembly in order to prevent air from being mixed during plasticization of the resin to cause resin burning and bubbles to be generated in the product to cause defective products. It is known to supply in a vacuum state. FIG. 4 shows a known pellet vacuum supply device. In this apparatus, a vacuum hopper 23 for storing pellets P is connected to the upper end of a hopper port 22 of a plasticizing screw assembly 21. The vacuum hopper 23 is provided with a level switch 24 that detects the level of pellets with a detector 24a, and is connected to a vacuum pump 26 via a solenoid valve 25 and to the atmosphere via a solenoid valve 27, respectively. . A loader hopper 28 is installed on the top of the vacuum hopper 23 via a shutter 29. Shutter 29
Is a shutter opening / closing cylinder 29a, a shutter housing 2
9b and a shutter plate 29c.
【０００３】前記の装置ではシャッタ２９を閉じ電磁弁
２５を開にし、真空ポンプ２６を作動するとホッパ２３
内は真空状態となり、ホッパ２３内のペレットＰは可塑
化アセンブリへと供給され成形作業が行なわれる。しか
して、ホッパ２３内のペレットが減少し設定レベル以下
になるとレベルスイッチ２４が作動する。すると、この
信号を受けて電磁弁２５が閉じ、真空ホッパ２３内の排
気が止まる。同時に電磁弁２７を開いて大気に連通しホ
ッパ２３内を大気圧にした後電磁弁２７を閉じる。次に
シャッタ開閉シリンダ２９aを作動させシャッタプレー
ト２９cをスライドさせてシャッタプレート２９cの孔を
介してローダ用ホッパ２８とホッパ２３を連通させる。
すると、ローダ用ホッパ２８内のペレットＰはホッパ２
３へ流下しホッパ２３内に堆積し設定レベルに達すると
レベルスイッチ２４の作動によりシャッタ開閉シリンダ
２９aがシャッタプレート２９cを閉じの状態にしローダ
用ホッパ室と真空ホッパ室とを遮断し最初の状態に戻
る。そこで、電磁弁２５を開にすると真空ポンプ２６に
より真空ホッパ２３内は再び真空状態となり真空状態で
の可塑化が可能となる。In the above apparatus, the shutter 29 is closed, the solenoid valve 25 is opened, and the vacuum pump 26 is operated.
The inside is in a vacuum state, and the pellets P in the hopper 23 are supplied to the plasticizing assembly and the molding operation is performed. Then, when the amount of pellets in the hopper 23 decreases and becomes lower than the set level, the level switch 24 operates. Then, in response to this signal, the solenoid valve 25 is closed, and the exhaust in the vacuum hopper 23 is stopped. At the same time, the solenoid valve 27 is opened to communicate with the atmosphere and the inside of the hopper 23 is brought to the atmospheric pressure, and then the solenoid valve 27 is closed. Next, the shutter opening / closing cylinder 29a is operated to slide the shutter plate 29c so that the loader hopper 28 and the hopper 23 are communicated with each other through the hole of the shutter plate 29c.
Then, the pellets P in the hopper 28 for the loader are transferred to the hopper 2
3, the shutter opening / closing cylinder 29a closes the shutter plate 29c by the operation of the level switch 24 when it reaches the set level in the hopper 23, and shuts off the loader hopper chamber and the vacuum hopper chamber to the initial state. Return. Therefore, when the solenoid valve 25 is opened, the vacuum pump 26 brings the inside of the vacuum hopper 23 into the vacuum state again, and plasticization in the vacuum state becomes possible.
【０００４】[0004]
【発明が解決しようとする課題】従来の装置ではペレッ
トＰをローダ用ホッパ２８から真空ホッパ２３内へ供給
するとき真空状態が一旦解除されるため、この間に可塑
化される樹脂中に空気が混入されるのでシャッタ２９の
開閉に同期して周期的に製品の品質を低下させるという
問題点があった。この発明は、上記従来装置の欠点をな
くし、ホッパ内の樹脂ペレットを真空状態のまま連続的
に可塑化スクリュアセンブリに供給できる装置を提供す
ることを目的とするものである。In the conventional apparatus, when the pellets P are supplied from the loader hopper 28 into the vacuum hopper 23, the vacuum state is temporarily released. Therefore, air is mixed in the plasticized resin during this period. Therefore, there is a problem that the quality of the product is periodically deteriorated in synchronization with the opening and closing of the shutter 29. An object of the present invention is to eliminate the above-mentioned drawbacks of the conventional apparatus and to provide an apparatus capable of continuously supplying the resin pellets in the hopper to the plasticizing screw assembly in a vacuum state.
【０００４】[0004]
【課題を解決するための手段】樹脂の可塑化中に樹脂中
に空気が混入しないように、可塑化スクリュアセンブリ
内へ空気の侵入を防止する成形機において、該可塑化ス
クリュアセンブリ１のホッパ口２の上端に第１真空容器
３を連結し、該第１真空容器３の上部に第１シャッタ５
を介して第２真空容器４を連結し、さらに、該第２真空
容器４の上部に第２シャッタ７を介してホッパ６を連結
し、第１真空容器３内を常時真空状態に保持し、第２真
空容器４内を前記第１シャッタ５の開閉時は真空状態
に、また、前記第２シャッタ７の開閉時は大気圧に保持
することにより可塑化スクリュアセンブリ内への空気の
侵入を防止するようにしたことを特徴とする。In a molding machine for preventing air from entering into a plasticizing screw assembly so that air is not mixed into the resin during plasticizing of the resin, a hopper opening of the plasticizing screw assembly 1 is provided. The first vacuum vessel 3 is connected to the upper end of the second vacuum vessel 2, and the first shutter 5 is attached to the upper side of the first vacuum vessel 3.
The second vacuum container 4 is connected through the second vacuum container 4, the hopper 6 is connected to the upper part of the second vacuum container 4 through the second shutter 7, and the inside of the first vacuum container 3 is constantly maintained in a vacuum state. The inside of the second vacuum container 4 is kept in a vacuum state when the first shutter 5 is opened and closed, and is kept at the atmospheric pressure when the second shutter 7 is opened and closed to prevent air from entering the plasticizing screw assembly. It is characterized by doing so.
【０００５】[0005]
【発明の実施の形態】次に、この発明の実施の形態につ
いて図面を参照して説明する。図１はこの発明の要部の
説明図であって、成形機の可塑化スクリュアセンブリ１
のホッパ口２の上端に第１真空容器３が連結されてお
り、該第１真空容器３の上部に第１シャッタ５を介して
第２真空容器４が連結されている。そして、第２真空容
器４の上部に第２シャッタ７を介してローダ用ホッパ６
が連結されている。なお、これらの連結部は気密構造と
なっていることはいうまでもない。８は真空ポンプで第
１真空容器３とは直結されており、第２真空容器４とは
電磁弁９を介して接続されている。また、第２真空容器
４には必要に応じて大気に連通させるための電磁弁１０
が設置されている。Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a main part of the present invention, which is a plasticizing screw assembly 1 of a molding machine.
The first vacuum container 3 is connected to the upper end of the hopper port 2 of the above, and the second vacuum container 4 is connected to the upper part of the first vacuum container 3 via the first shutter 5. Then, the hopper 6 for the loader is provided above the second vacuum container 4 via the second shutter 7.
Are connected. Needless to say, these connecting portions have an airtight structure. Reference numeral 8 denotes a vacuum pump which is directly connected to the first vacuum container 3 and is connected to the second vacuum container 4 via a solenoid valve 9. Further, the second vacuum container 4 has a solenoid valve 10 for communicating with the atmosphere as necessary.
Is installed.
【０００６】第１シャッタ５、第２シャッタ７の詳細構
造を図２に示す。シャッタ孔Ｈを有するシャッタプレー
ト５aがシャッタ開閉シリンダ１１によってシャッタハ
ウジング５b中を摺動する形式のもので前記図４に示す
公知のシャッタと同一形式のものである。 なお、第１
真空容器３、第２真空容器４には前記図４の公知の装置
で説明したと同様、容器内の樹脂ペレットＰのレベルを
検出する検出器１３、１４が設置されており、該検出器
からの信号が制御器１５へ入力されて電磁弁９、１０お
よび第１シャッタ５、第２シャッタ７の開閉が制御され
ている。A detailed structure of the first shutter 5 and the second shutter 7 is shown in FIG. A shutter plate 5a having a shutter hole H is of a type that slides in a shutter housing 5b by a shutter opening / closing cylinder 11 and is of the same type as the known shutter shown in FIG. The first
The vacuum container 3 and the second vacuum container 4 are provided with detectors 13 and 14 for detecting the level of the resin pellet P in the container, as described in the known device of FIG. Is input to the controller 15 to control the opening / closing of the solenoid valves 9, 10 and the first shutter 5 and the second shutter 7.
【０００７】次にこの発明装置の動作について説明す
る。先ず第１シャッタ５、第２シャッタ７および電磁弁
９、１０を閉じた状態で真空ポンプ８を起動すると第１
真空容器３及び該容器３に接続する可塑化スクリュアセ
ンブリ１内は排気され真空状態となる。このとき第２真
空容器４内は大気圧であるため、シャッタ５のシャッタ
プレート５aは差圧によりシャッタハウジング５bに密着
してシールされている。そして、第１真空容器３内の樹
脂ペレットＰは真空状態で可塑化スクリュアセンブリ１
へ供給される。Next, the operation of the device of the present invention will be described. First, when the vacuum pump 8 is started with the first shutter 5, the second shutter 7 and the solenoid valves 9 and 10 closed,
The inside of the vacuum container 3 and the plasticizing screw assembly 1 connected to the container 3 is evacuated to a vacuum state. At this time, since the inside of the second vacuum container 4 is at atmospheric pressure, the shutter plate 5a of the shutter 5 is in close contact with and sealed by the shutter housing 5b due to the differential pressure. Then, the resin pellet P in the first vacuum container 3 is in a vacuum state and the plasticizing screw assembly 1
Supplied to
【０００８】成形作業の進行に伴って第１真空容器３内
の樹脂ペレットが設定レベル以下まで減少すると、レベ
ル検出器１３からの信号により電磁弁９が開いて第２真
空容器４内が排気され真空状態にされる。このとき、容
器３、４はともに真空状態となるのでシャッタプレート
５aの両面の差圧がなくなり前記ハウジング５bへの密着
が解除されて摺動可能の状態になる。そこで、第１シャ
ッタ開閉シリンダ１１が作動して第１シャッタ５が開
き、第２真空容器４内に貯留されている樹脂ペレットＰ
は第１真空容器３内へ流下してペレットの補充が行なわ
れる。そして、第１真空容器３内のペレットの貯留レベ
ルが設定レベルまで達するとレベル検出器１３からの信
号により第１シャッタ開閉シリンダ１１が作動して第１
シャッタ５を閉塞する。第１シャッタ５の閉塞が完了す
ると電磁弁９が閉じ、第２真空容器４からの排気は中止
する。When the resin pellets in the first vacuum container 3 decrease to below the set level as the molding work progresses, the electromagnetic valve 9 is opened by the signal from the level detector 13 and the interior of the second vacuum container 4 is evacuated. It is evacuated. At this time, since the containers 3 and 4 are both in a vacuum state, the pressure difference between the two surfaces of the shutter plate 5a disappears, the close contact with the housing 5b is released, and the container is slidable. Therefore, the first shutter opening / closing cylinder 11 operates to open the first shutter 5, and the resin pellets P stored in the second vacuum container 4 are discharged.
Is flowed down into the first vacuum container 3 to replenish the pellets. Then, when the storage level of the pellets in the first vacuum container 3 reaches the set level, the first shutter opening / closing cylinder 11 is activated by the signal from the level detector 13 and the first shutter opening / closing cylinder 11 is activated.
The shutter 5 is closed. When the closing of the first shutter 5 is completed, the electromagnetic valve 9 is closed, and the exhaust from the second vacuum container 4 is stopped.
【０００９】次に電磁弁１０が開き第２真空容器４内が
大気圧となると、電磁弁１０は再び閉じられる。容器４
内が大気圧になるとシャッタプレート７aはその両面の
差圧がなくなりハウジング７bへの密着が解除されて摺
動可能状態となり、第２シャッタ開閉シリンダ１２が作
動して第２シャッタ７は開きローダ用ホッパ６から容器
４内へ樹脂ペレットＰが補給される。そして、容器４内
のペレットのレベルが設定レベルまで達するとレベル検
出器１４からの信号により第２シャッタ７が閉塞して最
初の状態に戻る。図３に上記の動作シーケンスを示す。Next, when the solenoid valve 10 is opened and the inside of the second vacuum container 4 becomes atmospheric pressure, the solenoid valve 10 is closed again. Container 4
When the inside pressure becomes atmospheric, the shutter plate 7a loses the pressure difference between its two sides, the contact with the housing 7b is released, and the shutter plate 7a becomes slidable, and the second shutter opening / closing cylinder 12 operates to open the second shutter 7 for a loader. The resin pellets P are replenished from the hopper 6 into the container 4. Then, when the level of the pellets in the container 4 reaches the set level, the signal from the level detector 14 closes the second shutter 7 and returns to the initial state. FIG. 3 shows the above operation sequence.
【００１０】[0010]
【発明の効果】この発明によれば、従来のように真空ホ
ッパへの樹脂ペレットの供給時に、可塑化スクリュアセ
ンブリ内に空気が混入して、周期的に不良品を成形する
ようなことがなく、スクリュアセンブリ内を常に真空状
態に保持できるので不良品の発生を防止することができ
る。According to the present invention, air is not mixed into the plasticizing screw assembly at the time of supplying resin pellets to the vacuum hopper as in the prior art, and defective products are not periodically formed. Since the inside of the screw assembly can be constantly maintained in a vacuum state, it is possible to prevent the generation of defective products.
【図１】この発明方法を実施する装置要部の説明図。FIG. 1 is an explanatory diagram of a main part of an apparatus for carrying out the method of the present invention.
【図２】シャッタの詳細図で、（ａ）は平面図、（ｂ）
は断面図。FIG. 2 is a detailed view of a shutter, in which (a) is a plan view and (b) is a plan view.
Is a sectional view.
【図３】この発明の動作シーケンス。FIG. 3 is an operation sequence of the present invention.
【図４】従来装置の要部説明図。FIG. 4 is an explanatory view of a main part of a conventional device.
１ 可塑化スクリュアセンブリ ２ ホッパ口 ３ 第１真空容器 ４ 第２真空容器 ５ 第１シャッタ ５a シャッタプレート ５b シャッタハウジング ６ ホッパ ７ 第２シャッタ ７a シャッタプレート ７b シャッタハウジング ８ 真空ポンプ ９ 電磁弁 １０ 電磁弁 １１ 第１シャッタ開閉シリンダ １２ 第２シャッタ開閉シリンダ １３ レベル検出器 １４ レベル検出器 １５ 制御器 ２１ 可塑化スクリュアセンブリ ２２ ホッパ口 ２３ 真空ホッパ ２４ レベルスイッチ ２４a 検出子 ２５ 電磁弁 ２６ 真空ポンプ ２７ 電磁弁 ２８ ローダ用ホッパ ２９ シャッタ ２９a シャッタ開閉シリンダ ２９b シャッタハウジング ２９c シャッタプレート Ｈ シャッタ孔 Ｐ 樹脂ペレット 1 plasticizing screw assembly 2 hopper port 3 first vacuum container 4 second vacuum container 5 first shutter 5a shutter plate 5b shutter housing 6 hopper 7 second shutter 7a shutter plate 7b shutter housing 8 vacuum pump 9 solenoid valve 10 solenoid valve 11 First shutter opening / closing cylinder 12 Second shutter opening / closing cylinder 13 Level detector 14 Level detector 15 Controller 21 Plasticizing screw assembly 22 Hopper port 23 Vacuum hopper 24 Level switch 24a Detector 25 Solenoid valve 26 Vacuum pump 27 Solenoid valve 28 Loader Hopper 29 Shutter 29a Shutter open / close cylinder 29b Shutter housing 29c Shutter plate H Shutter hole P Resin pellet
Claims (3)
いように、可塑化スクリュアセンブリ内へ空気の侵入を
防止する成形機において、該可塑化スクリュアセンブリ
（１）のホッパ口（２）の上端に第１真空容器（３）を
連結し、該第１真空容器（３）の上部に第１シャッタ
（５）を介して第２真空容器（４）を連結し、さらに、
該第２真空容器（４）の上部に第２シャッタ（７）を介
してホッパ（６）を連結し、第１真空容器（３）内を常
時真空状態に保持し、第２真空容器（４）内を前記第１
シャッタ（５）の開閉時は真空状態に、また、前記第２
シャッタ（７）の開閉時は大気圧に保持することにより
可塑化スクリュアセンブリ内への空気の侵入を防止する
ようにしたことを特徴とする成形機のペレット供給装
置。1. A molding machine for preventing air from entering an inside of a plasticizing screw assembly so that air is not mixed into the resin during plasticizing of the resin, in a hopper port (2) of the plasticizing screw assembly (1). ) Is connected to the first vacuum container (3), the second vacuum container (4) is connected to the upper part of the first vacuum container (3) via the first shutter (5), and
A hopper (6) is connected to the upper part of the second vacuum container (4) via a second shutter (7) to keep the inside of the first vacuum container (3) in a vacuum state at all times, ) Inside the first
When the shutter (5) is opened and closed, it is in a vacuum state.
A pellet feeder for a molding machine, characterized in that when the shutter (7) is opened and closed, it is kept at atmospheric pressure to prevent air from entering the plasticizing screw assembly.
ポンプ（８）に直結されており、第２真空容器（４）は
電磁弁（９）を介して前記真空ポンプ（９）と、また、
電磁弁（１０）を介して大気に接続されていることを特
徴とする請求項１記載の成形機のペレット供給装置。2. The first vacuum container (3) according to claim 1 is directly connected to a vacuum pump (8), and the second vacuum container (4) is connected to the vacuum pump (9) via a solenoid valve (9). ), And also
The pellet feeder for a molding machine according to claim 1, wherein the pellet feeder is connected to the atmosphere via a solenoid valve (10).
（４）には樹脂ペレットのレベル検出器（１３）、（１
４）が設置されており、該検出器からの検出信号により
電磁弁（９）、（１０）及び第１シャッタシャッタ
（５）、第２シャッタ（７）が開閉されることを特徴と
する請求項２記載の成形機のペレット供給装置。3. A resin pellet level detector (13), (1) in the first vacuum container (3) and the second vacuum container (4).
4) is installed, and the solenoid valves (9), (10) and the first shutter shutter (5) and the second shutter (7) are opened and closed by a detection signal from the detector. Item 2. A pellet feeder for a molding machine according to Item 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7337674A JPH09155867A (en) | 1995-12-04 | 1995-12-04 | Pellet supply device of molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7337674A JPH09155867A (en) | 1995-12-04 | 1995-12-04 | Pellet supply device of molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09155867A true JPH09155867A (en) | 1997-06-17 |
Family
ID=18310896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7337674A Pending JPH09155867A (en) | 1995-12-04 | 1995-12-04 | Pellet supply device of molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09155867A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008528325A (en) * | 2005-01-28 | 2008-07-31 | エレマ エンジニアリング リサイクリング マシネン ウント アンラーゲン ゲゼルシャフト ミット ベシュレンクテル ハフトフング | An apparatus for filling an extruder with a pre-processed thermoplastic synthetic resin material |
| JP2011083953A (en) * | 2009-10-15 | 2011-04-28 | Japan Steel Works Ltd:The | Injection molding system |
| JP2012086444A (en) * | 2010-10-19 | 2012-05-10 | Japan Steel Works Ltd:The | Injection molding system |
| JP2013230639A (en) * | 2012-05-01 | 2013-11-14 | Japan Steel Works Ltd:The | Injection molding machine and supplying method of molding material |
| WO2016103389A1 (en) * | 2014-12-25 | 2016-06-30 | 株式会社松井製作所 | Molding material supply system and molding material supply method |
-
1995
- 1995-12-04 JP JP7337674A patent/JPH09155867A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008528325A (en) * | 2005-01-28 | 2008-07-31 | エレマ エンジニアリング リサイクリング マシネン ウント アンラーゲン ゲゼルシャフト ミット ベシュレンクテル ハフトフング | An apparatus for filling an extruder with a pre-processed thermoplastic synthetic resin material |
| JP2011083953A (en) * | 2009-10-15 | 2011-04-28 | Japan Steel Works Ltd:The | Injection molding system |
| JP2012086444A (en) * | 2010-10-19 | 2012-05-10 | Japan Steel Works Ltd:The | Injection molding system |
| JP2013230639A (en) * | 2012-05-01 | 2013-11-14 | Japan Steel Works Ltd:The | Injection molding machine and supplying method of molding material |
| WO2016103389A1 (en) * | 2014-12-25 | 2016-06-30 | 株式会社松井製作所 | Molding material supply system and molding material supply method |
| JPWO2016103389A1 (en) * | 2014-12-25 | 2017-09-28 | 株式会社松井製作所 | Molding material supply system and molding material supply method |
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