JPS64205B2 - - Google Patents
Info
- Publication number
- JPS64205B2 JPS64205B2 JP55143208A JP14320880A JPS64205B2 JP S64205 B2 JPS64205 B2 JP S64205B2 JP 55143208 A JP55143208 A JP 55143208A JP 14320880 A JP14320880 A JP 14320880A JP S64205 B2 JPS64205 B2 JP S64205B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- melt
- accumulator
- extruder
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000155 melt Substances 0.000 claims description 9
- 239000012768 molten material Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000289 melt material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
- B29C31/042—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds
- B29C31/044—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds with moving heads for distributing liquid or viscous material into the moulds
- B29C31/045—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds with moving heads for distributing liquid or viscous material into the moulds moving along predetermined circuits or distributing the material according to predetermined patterns
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は耐衝撃性、耐寒性、寸法安定性、長期
寿命性等に優れた熱可塑性樹脂成形品の加工成形
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for processing and molding thermoplastic resin molded products having excellent impact resistance, cold resistance, dimensional stability, long life, etc.
従来熱可塑性樹脂成形品として低粘度グレード
を原料樹脂に用いて射出成形法により得られてい
るものがある。この場合に特に投影面積が大きい
成形品やフラツトな形状の成形品については、ウ
エルドラインやゲート付近の強度低下、樹脂の流
動むら更には冷却配管の分布や冷却温度の違いか
ら大きな歪、ねじれ、反り等が発生することが多
い、機械的強度や長期寿命を要求される構造部品
にとつては、ウエルドラインやゲート付近の強度
低下は問題であり、一方原料樹脂の選択について
も高粘度グレード即ち高分子量グレードを用いる
ことはノズルからの流動、金型内の流動等の点で
限界がある。 Conventionally, some thermoplastic resin molded products have been obtained by injection molding using a low viscosity grade resin as a raw material resin. In this case, especially for molded products with a large projected area or flat shapes, there may be large distortions, twists, etc. due to decreased strength near weld lines and gates, uneven resin flow, and differences in cooling piping distribution and cooling temperature. For structural parts that require mechanical strength and long service life, where warping often occurs, a decrease in strength near weld lines and gates is a problem.On the other hand, when it comes to selecting raw material resin, high viscosity grades, i.e. The use of high molecular weight grades has limitations in terms of flow from the nozzle, flow within the mold, etc.
本発明は、これらの問題を解決する為種々検討
して到達したものでありその要旨は、押出機先端
に熱可塑性樹脂溶融物を貯蔵し且つプランジヤー
により該溶融物と吐出するアキユムレーターと開
閉自在の上下一対の金型と、該アキユムレーター
から伸びるフレキシブルホース先端にロボツトに
より所定の２次元又は３次元のルートを移動して
型開きした該金型の下側内面に該溶融物を吐出落
下するヘツド部とを備えてなる加圧成形装置であ
る。 The present invention was arrived at after various studies in order to solve these problems, and its gist is to store a thermoplastic resin melt at the tip of an extruder and discharge the melt with a plunger, and an accumulator that can be opened and closed. A pair of upper and lower molds, and a head section that moves the melt along a predetermined two-dimensional or three-dimensional route by a robot to the tip of a flexible hose extending from the accumulator and discharges the melt onto the lower inner surface of the mold which is opened. This is a pressure molding device comprising:
以下に本発明の実施例を図面を用いて説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の装置を示す側面図であるが熱
可塑性樹脂は押出機１によつて可塑化される。押
出機１は手動、モーター等で軸方向に移動可能な
台車２を介してレール３の上に乗つている。レー
ル３はプレス４の側際まで延びており、金型の大
小や作業環境に応じてプレス４と押出機１との位
置が変更できる。 FIG. 1 is a side view showing the apparatus of the present invention, in which thermoplastic resin is plasticized by an extruder 1. In FIG. The extruder 1 is mounted on a rail 3 via a cart 2 which can be moved in the axial direction manually or by a motor. The rail 3 extends to the side of the press 4, and the positions of the press 4 and extruder 1 can be changed depending on the size of the mold and the working environment.
可塑化された溶融物は、押出機１の先端にある
ダイアダプター５を経由してアキユムレーター６
に蓄えられる。なおダイアダプター５とアキユム
レーター６との間には逆流防止弁が必要である。
アキユムレーター６は吐出用プランジヤー７を備
え、プランジヤー７はシリンダー８により油圧ま
たはパルスモーターに連結されたスクリユー等の
駆動装置９により制御された速度でストローク運
動を行なう。プランジヤー７はアキユムレーター
内の溶融物の蓄え量を一定に保つため、リミツト
スイツチ１０を押すことにより押出機の駆動をオ
ン、オフできるようになつている。 The plasticized melt is passed through a die adapter 5 at the tip of the extruder 1 to an accumulator 6.
is stored in Note that a check valve is required between the die adapter 5 and the accumulator 6.
The accumulator 6 is equipped with a discharge plunger 7, and the plunger 7 performs a stroke movement at a speed controlled by a drive device 9 such as a screw or the like connected to a hydraulic cylinder 8 or a pulse motor. The plunger 7 is configured to turn on and off the drive of the extruder by pushing a limit switch 10 in order to keep the amount of melt stored in the accumulator constant.
プランジヤー７が後退してリミツトスイツチ１
０を押し、押出機が停止してアキユムレーター６
内に所定量の溶融物が満ちた状態に達した後、金
型内への溶融物投入の指示が手動ボタン、タイマ
ー等のセツテイングによりなされる。機械または
油圧プレス４において先の成形が終了し金型（上
型１１、下型１２）が開いて、上型１１が上昇
し、成形品が取り出された後、プレスの危険限界
（プレスが上下して金型及びスライドベースが通
過する空間）外に待機していたヘツド部１３がエ
アー、油圧等で作動するシリンダー１４、パルス
モーターを備えたスクリユー１５等で構成される
ロボツト１６に誘導されて、下型１２上に移動さ
れ、成形品のデザインに応じて、ある地点よりノ
ズル１７を開き、同時にプランジヤー７を作動さ
せ、溶融物を下型１２上に投下させる。溶融物の
断面形状はノズルの内形状により円形、角形、そ
の他に決めることができ、その寸法も樹脂の流動
特性及び成形品デザインに応じて決められるもの
で、帯状になつて下型１２面上に静置されてい
く。ヘツド部１３はロボツト１６により下型１２
面上を、あらかじめ成形試作を通して決められ
て、コンピユーターに記憶させておいたルートの
３次元（Ｘ、Ｙ、Ｚ）軸の移動を溶融物を垂らし
ながら続けていく。 Plunger 7 retreats and limit switch 1
Press 0, the extruder stops and the accumulator 6
After the mold is filled with a predetermined amount of molten material, an instruction to introduce the molten material into the mold is given by setting a manual button, timer, or the like. In the mechanical or hydraulic press 4, the previous molding is completed, the molds (upper mold 11, lower mold 12) are opened, the upper mold 11 is raised, and the molded product is taken out. The head section 13, which was waiting outside (the space through which the mold and slide base pass), is guided to the robot 16, which is composed of a cylinder 14 operated by air or hydraulic pressure, a screw 15 equipped with a pulse motor, etc. , is moved onto the lower mold 12, and depending on the design of the molded product, the nozzle 17 is opened at a certain point, and at the same time the plunger 7 is operated to drop the melt onto the lower mold 12. The cross-sectional shape of the melt can be determined as circular, square, or other depending on the internal shape of the nozzle, and its dimensions are also determined according to the flow characteristics of the resin and the molded product design. It will be left still. The head part 13 is moved to the lower mold 12 by the robot 16.
The molten material is continuously moved along the three-dimensional (X, Y, Z) axes along a route determined in advance through molding prototypes and stored in a computer on the surface while dripping.
押出機１及びアキユムレーター５を固定すると
すれば、ヘツド部を平面内（Ｘ、Ｙ）軸のみ移動
させるならば、溶融物の流路として２本の鋼管と
回転ヒンジを使用すれば良いが、この方法では立
上りの大きな成形品（高さのある成形品）につい
ては溶融物の精確な投入、静置が困難となり、場
合によつては下型の最つとも低い所に溜つて、金
型を閉じ加圧しても溶融物が金型内全面に回りき
らないおそれがある。その為本発明の装置はヘツ
ド部１３とアキユムレーター６との間を特殊なフ
レキシブルホース１８で連結している。このホー
スは市販の最内層にテフロンホースを使用しそれ
をSUS線のスパイラルカバーを多層にほどこし、
更に外装ブレードつけた超高圧タイプのもので、
例えば内径1/2〜１インチの場合、使用内圧力は
1000Kg/cm2（但し破壊圧力2000〜2200Kg/cm2）で使
用温度260℃まで耐えるものが使用される。しか
もフレキシビリテイーとしては内径1/2インチの
もので146m/m以上、１インチのもので244m/m
以上の最小半径が確保されるのが好ましく、極め
て柔軟性があり、かつ内部がテフロンであるため
ポリオレフイン類等の溶融物が粘着せず、滞留に
よる劣化もない。このホース１８の囲りにはテー
プヒーター１９が巻かれ、電圧を制御しながらホ
ース内の溶融物の温度低下を防いでいる。 If the extruder 1 and accumulator 5 are fixed, and the head part is moved only in the plane (X, Y) axes, two steel pipes and a rotating hinge can be used as the flow path for the melt, but this With this method, for molded products with large rises (high molded products), it is difficult to accurately introduce and let the molten material stand still, and in some cases, the melt may accumulate in the lowest part of the lower mold, causing the mold to collapse. Even if the mold is closed and pressurized, the molten material may not be able to completely cover the entire surface of the mold. For this reason, the device of the present invention connects the head portion 13 and the accumulator 6 with a special flexible hose 18. This hose uses a commercially available Teflon hose for the innermost layer, and then covers it with multiple layers of SUS wire spiral covers.
Furthermore, it is an ultra-high pressure type with an external blade.
For example, if the inner diameter is 1/2 to 1 inch, the working internal pressure is
A material that can withstand a working temperature of 260°C at a burst pressure of 1000Kg/cm 2 (however, 2000-2200Kg/cm 2 ) is used. Moreover, the flexibility is more than 146m/m for 1/2 inch inner diameter and 244m/m for 1 inch inner diameter.
It is preferable that the above minimum radius is ensured, and since it is extremely flexible and has a Teflon interior, melted materials such as polyolefins do not stick to it, and there is no deterioration due to retention. A tape heater 19 is wound around the hose 18 to prevent the temperature of the molten material inside the hose from decreasing while controlling the voltage.
アキユムレーター６以降の樹脂温度の制御はア
キユムレーター６とヘツド部１３に熱伝対２０を
配して温度検出し、フイードバツクしてアキユム
レーターのヒーター２１及びヘツド部ヒーター２
２で加熱、温度調節している。なお万一圧力上昇
があつた場合に備えてアキユムレーター６とヘツ
ド部１３にラプチヤーデイスクを備えつけておく
ことが必要である。 The temperature of the resin after the accumulator 6 is controlled by detecting the temperature by disposing a thermocouple 20 in the accumulator 6 and the head section 13, and providing feedback to the accumulator heater 21 and the head section heater 2.
2 to heat and adjust the temperature. In addition, it is necessary to equip the accumulator 6 and the head section 13 with a rupture disk in case the pressure rises.
コンピユーターコントロールについては、ヘツ
ド部１３を一定のルートに一定速度でたどらせ、
そのルートとその時間に合せてプランジヤー７の
吐出速度（吐出量）を均一に保つたり、増速した
り、減速したりして、デザインに合せて金型内の
位置で静置量の異なる溶融物の投入を行ないヘツ
ド部の移動終了と同時に吐出も停止する。ノズル
１７の開閉は電磁弁を使用してもよく、或いはロ
ボツトに組込んだ機械的にノズル出口を開閉する
堰をつけてもよい。 Regarding computer control, the head section 13 is made to follow a certain route at a certain speed,
Depending on the route and time, the discharge speed (discharge amount) of the plunger 7 can be kept uniform, increased, or decelerated, and the melting amount can be set at different positions in the mold according to the design. The material is loaded and the discharge stops at the same time as the head section finishes moving. A solenoid valve may be used to open and close the nozzle 17, or a weir that mechanically opens and closes the nozzle outlet may be built into the robot.
ヘツド部１３が溶融物の吐出と併行して３次元
のルートを完全にたどつた後はノズル１７は直ち
に閉じ、ヘツド部１３は危険限界外へ移動し、所
定の場所に待機する。同時に、押出機が駆動を開
始しアキユムレーター内にポリオレフイン類等の
溶融物を供給していく。ヘツド部１３が危険限界
から出ると、直ぐに所定温度に加熱された金型が
雌雄端面が摺動して閉じ、加圧状態に入り、一定
時間の保冷後、金型を開き成形品を取り出す。 After the head 13 has completely followed the three-dimensional route in parallel with the discharge of the melt, the nozzle 17 is immediately closed, the head 13 moves out of the danger limit, and waits at a predetermined location. At the same time, the extruder starts operating and supplies melted material such as polyolefins into the accumulator. As soon as the head portion 13 comes out of the danger limit, the male and female end surfaces of the mold, which has been heated to a predetermined temperature, slide and close, entering a pressurized state, and after being kept cool for a certain period of time, the mold is opened and the molded product is taken out.
以上の工程を簡潔に示せば次のようになる。 The above process can be briefly explained as follows.
ヘツド部停止（溶融物投入終了、ノズル閉）→
ヘツド部後退（押出機駆動）→プレス型締め→プ
レス型開き、成形品取出し→ヘツド部前進（押出
機停止）→溶融物の投入開始（ノズル開き→ヘツ
ド部ルート移動（溶融物投入継続）→ヘツド部停
止（溶融物投入終了、ノズル閉）
これらの動きは全てタイマーを使用して制御
し、この動きが繰り返されることになる。ヘツド
部の移動速度及びプランジヤーの吐出速度は各モ
ーターの変速機構を使つて行なう。 Head part stopped (melt material injection completed, nozzle closed) →
Head retreats (extruder driven) → press mold clamps → press mold opens, molded product taken out → head advances (extruder stopped) → melt injection starts (nozzle opens → head route moves (melt injection continues) → The head stops (melt material input is completed, nozzle closes) All these movements are controlled using a timer, and these movements are repeated.The moving speed of the head and the discharge speed of the plunger are determined by the speed change mechanism of each motor. Do this using
以上述べたように本発明の装置によれば、自由
なデザインの加圧成形品が得られ、しかも該成形
品は射出成形品に見られるような局所の強度低
下、大きな歪、ねじれ、反り等もない。 As described above, according to the apparatus of the present invention, it is possible to obtain a pressure-molded product with a free design, and the molded product does not suffer from local strength loss, large distortion, twisting, or warping as seen in injection-molded products. Nor.
第１図は本発明に係る加圧成形装置の一例を示
す側面図である。
１…押出機、２…台車、３…レール、４…機械
又は油圧プレス、５…ダイアダプター、６…アキ
ユムレーター、７…プランジヤー、８…シリンダ
ー、９…駆動装置、１０…リミツトスイツチ、１
１…上金型、１２…下金型、１３…ヘツド部、１
４…シリンダー、１５…スクリユー、１６…ロボ
ツト、１７…ノズル、１８…フレキシブルホー
ス、１９…テープヒーター、２０…熱伝対、２１
…ヒーター、２２…ヒーター。
FIG. 1 is a side view showing an example of a pressure molding apparatus according to the present invention. 1... Extruder, 2... Dolly, 3... Rail, 4... Mechanical or hydraulic press, 5... Die adapter, 6... Accumulator, 7... Plunger, 8... Cylinder, 9... Drive device, 10... Limit switch, 1
1... Upper mold, 12... Lower mold, 13... Head part, 1
4... Cylinder, 15... Screw, 16... Robot, 17... Nozzle, 18... Flexible hose, 19... Tape heater, 20... Thermocouple, 21
...Heater, 22...Heater.
Claims (1)
つプランジヤーにより該溶融物を吐出するアキユ
ムレーターと、開閉自在の上下一対の金型と、該
アキユムレーターから伸びるフレキシブルホース
先端にロボツトにより所定の２次元又は３次元の
ルートを移動して型開きした該金型の下側内面に
該溶融物を吐出落下するヘツド部とを、備えてな
ることを特徴とする加圧成形装置。1. An accumulator that stores a thermoplastic resin melt at the tip of the extruder and discharges the melt using a plunger, a pair of upper and lower molds that can be opened and closed, and a predetermined two-dimensional or A pressure molding device comprising: a head portion that discharges and drops the molten material onto the lower inner surface of the mold which is opened by moving along a three-dimensional route.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55143208A JPS5766915A (en) | 1980-10-14 | 1980-10-14 | Method of pressure-molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55143208A JPS5766915A (en) | 1980-10-14 | 1980-10-14 | Method of pressure-molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5766915A JPS5766915A (en) | 1982-04-23 |
| JPS64205B2 true JPS64205B2 (en) | 1989-01-05 |
Family
ID=15333391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55143208A Granted JPS5766915A (en) | 1980-10-14 | 1980-10-14 | Method of pressure-molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5766915A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487108U (en) * | 1990-11-30 | 1992-07-29 | ||
| US11385298B2 (en) | 2017-12-11 | 2022-07-12 | Lg Energy Solution, Ltd. | Apparatus and method for diagnosing positive electrode contactor of battery pack |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63278812A (en) * | 1987-05-11 | 1988-11-16 | Chisso Corp | Press molding of thermoplastic resin |
| FR2734199B1 (en) * | 1995-05-16 | 1997-08-01 | Ecia Equip Composants Ind Auto | INSTALLATION FOR MANUFACTURING STRUCTURAL PARTS MADE OF FIBER REINFORCED THERMOPLASTIC MATERIAL, PARTICULARLY FOR MOTOR VEHICLES |
| CN111070528A (en) * | 2019-12-12 | 2020-04-28 | 永豪光电（中国）有限公司 | Die pressing and conveying mechanism for spherical lens |
-
1980
- 1980-10-14 JP JP55143208A patent/JPS5766915A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487108U (en) * | 1990-11-30 | 1992-07-29 | ||
| US11385298B2 (en) | 2017-12-11 | 2022-07-12 | Lg Energy Solution, Ltd. | Apparatus and method for diagnosing positive electrode contactor of battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5766915A (en) | 1982-04-23 |
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