JPH029614A - Injection compression control method of electrical injection molding machine and apparatus thereof - Google Patents
Injection compression control method of electrical injection molding machine and apparatus thereofInfo
- Publication number
- JPH029614A JPH029614A JP15907088A JP15907088A JPH029614A JP H029614 A JPH029614 A JP H029614A JP 15907088 A JP15907088 A JP 15907088A JP 15907088 A JP15907088 A JP 15907088A JP H029614 A JPH029614 A JP H029614A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- electric motor
- mold clamping
- clamping electric
- rotation
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000002347 injection Methods 0.000 title claims description 13
- 239000007924 injection Substances 0.000 title claims description 13
- 230000006835 compression Effects 0.000 title claims description 11
- 238000007906 compression Methods 0.000 title claims description 11
- 238000001746 injection moulding Methods 0.000 title claims description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 10
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
- B29C2045/563—Enlarging the mould cavity during injection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
- B29C2045/5655—Injection-compression moulding using a screw mechanism as compression drive means
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
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、高い形状精度が要求され、かつ内部歪の少な
い合成樹脂成形品、例えば、レンズ、プリズム、ディス
ク等を成形するための、電動式射出成形機の射出圧縮制
御方法およびその装置に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is an electric motor for molding synthetic resin molded products that require high shape accuracy and have little internal distortion, such as lenses, prisms, and disks. The present invention relates to an injection compression control method and apparatus for a type injection molding machine.
従来の射出成形機における射出圧縮制御方法においては
、第２図に示すように、最初に型締圧力を低圧に設定し
て金型３３．３４を圧縮代を見込んだ位置まで型締した
のち、金型キャビティ３２内へ溶融合成樹脂の射出を開
始し、金型キャビティ３２内に充填された溶融合成樹脂
圧力により金型３３．３４が型開きされる型開き量を別
途に設けた位置センサー３０により検出し、その検出値
と設定回路の設定値とを比較回路により比較し、両者の
差を油圧制御回路へ与えて、ｆ１１記Ｈ：！開き量を一
定範囲内に維持するよう型締シリンダの油圧を：Ｊ４整
して溶融合成樹脂を射出充填するものが知られている（
特開昭６０−１１０４１９号公報参照）。In the conventional injection compression control method for an injection molding machine, as shown in FIG. 2, the mold clamping pressure is first set to a low pressure and the molds 33 and 34 are clamped to a position that takes into account the compression allowance. A position sensor 30 separately provided with a mold opening amount at which injection of the molten synthetic resin into the mold cavity 32 is started and the molds 33 and 34 are opened by the pressure of the molten synthetic resin filled into the mold cavity 32. The comparison circuit compares the detected value with the set value of the setting circuit, and the difference between the two is given to the hydraulic control circuit. It is known that the hydraulic pressure of the mold clamping cylinder is adjusted to maintain the opening amount within a certain range and molten synthetic resin is injected and filled (
(See Japanese Patent Application Laid-open No. 110419/1983).
」二連した従来の技術においては、金型の型開き量を検
出するための位置センサーを別途に設ける必要があるた
めに高価なものになる上、使用にともなって位置センサ
ーの取付部にゆるみが生じて位置センサーの検出積度が
低下する。また、高精度制御を行なおうとすると、油圧
回路内に油圧サーボ弁を付加することが必要となり複雑
で高価なものになるという間が点があった。” In the conventional technique of double series, it is necessary to separately install a position sensor to detect the opening amount of the mold, which makes it expensive, and the mounting part of the position sensor becomes loose with use. occurs, and the detection accuracy of the position sensor decreases. Furthermore, if high-precision control is to be performed, it is necessary to add a hydraulic servo valve to the hydraulic circuit, making the system complicated and expensive.
本発明は、上記従来の技術の有する問題点に鑑みてなさ
れたものであり、別途に位置センサーや油圧サーボ弁を
設ける必要がなく、金型の型開き！４の高精度の検出か
可能な電動式射出成形機の射出圧縮制御方法およびその
装置を提供することを［１的とする。The present invention has been made in view of the problems of the above-mentioned conventional techniques, and it is possible to open the mold without the need to separately provide a position sensor or hydraulic servo valve. [1] It is an object of the present invention to provide an injection compression control method and device for an electric injection molding machine that can perform highly accurate detection as described above.
に記１］的を達成するために、本発明の電動式射出成形
機の射出圧縮制御方法においては。[1] In order to achieve the objective, in the injection compression control method for an electric injection molding machine of the present invention.
型締用電動機を低トルク回転させて型締をしたのち、金
型キャビティ内へ溶融合成樹脂を射出し、金型キャビテ
ィ内に充填された溶融合成樹脂圧力による金型の型開き
による館記型締用電動機の逆回転の度合を検出し、この
検出値とあらかじめ設定しておいた任意の型開き量に相
当する設定値とが一致したとき、前記型締用電動機を高
トルク回転させて再型締を行なわせるものである。After clamping the mold by rotating the mold clamping electric motor at low torque, molten plastic is injected into the mold cavity, and the mold is opened by the pressure of the molten plastic filled in the mold cavity to create a mold. The degree of reverse rotation of the clamping electric motor is detected, and when this detected value matches a set value corresponding to a preset arbitrary mold opening amount, the mold clamping electric motor is rotated with high torque and restarted. This is to perform mold clamping.
また、上記射出圧縮制御方法を実施するための射出圧縮
制御装置としては、型締機構を駆動するための低トルク
回転および高トルク回転可能な型締用電動機に、金型の
型開きによる前記型締用電動機の逆回転の度合を検出す
るための回転検出器を設ける一方、あらかじめ任意の型
開き量に相当する設定値を設定できる設定器を備え、さ
らに、前記回転検出器の検出値と前記設定器の設定値と
を比較して両者が一致したとき出力信号を出す比較器を
設け、該比較器の出力信号が入力されると前記型締用電
動機を高トルク回転させて再型締な行なわせる指令を出
す制御回路を設けたものとするとよい。In addition, as an injection compression control device for carrying out the above injection compression control method, a mold clamping electric motor capable of low torque rotation and high torque rotation for driving a mold clamping mechanism is used, and A rotation detector is provided for detecting the degree of reverse rotation of the tightening motor, and a setting device is provided that can set a setting value corresponding to an arbitrary mold opening amount in advance, and the detection value of the rotation detector and the A comparator is provided that compares the setting value of the setting device and outputs an output signal when the two match, and when the output signal of the comparator is input, the mold clamping electric motor is rotated with high torque to perform mold clamping again. It is preferable that a control circuit is provided to issue a command to perform the operation.
ト述のように構成されているから、型締用電動機を低ト
ルク回転させて型締を行なったのち、金型キャビティ内
へ溶融合成樹脂を射出すると、金型キャビティ内に充填
された溶融合成Ｍ４詣圧力により金型が型開きされる。Since the structure is as described above, when the mold clamping electric motor is rotated at low torque to clamp the mold and then the molten composite resin is injected into the mold cavity, the molten composite filled in the mold cavity is The mold is opened by M4 pressure.
この型開きにより型締用電動機が逆回転されるので、そ
の逆回転の度合を回転検出器により検出することにより
金型の型開き量を検出することができる。そして、前記
回転検出器の検出値とあらかじめ設定した任意の型開き
ｑに相当する設定値とを比較し、両者が一致したとき前
記型締用電動機を高トルク回転させて再型締を行ない金
型キャビティ内の溶融合成樹脂を圧縮する。This mold opening causes the mold clamping electric motor to rotate in the reverse direction, and by detecting the degree of reverse rotation with a rotation detector, it is possible to detect the amount of mold opening of the mold. Then, the detection value of the rotation detector is compared with a preset value corresponding to an arbitrary mold opening q, and when the two match, the mold clamping motor is rotated at high torque to perform mold clamping again. Compress the molten plastic in the mold cavity.
実施例について図面を参照して説明する。 Examples will be described with reference to the drawings.
第１図において、ベツド１６上の一端側に固定した固定
１１１０とベツド１６上の他端側に固定した型締ハウジ
ング１４とは４本のタイバー８により互いに連結されて
おり、前記固定１ｉ１０と型締ハウジング１４間には、
前記タイバー８に案内されてその軸方向に往復移動自在
に可動ＷＩ９が配設されている。In FIG. 1, a fixing member 1110 fixed to one end of the bed 16 and a mold clamping housing 14 fixed to the other end of the bed 16 are connected to each other by four tie bars 8. Between the tightening housing 14,
A movable WI 9 is provided so as to be guided by the tie bar 8 and to be able to reciprocate in the axial direction thereof.
ベツド１６の適宜位置、例えば、型締ハウジング１４下
方には型締用電動機！が庫付けられており、該型締用電
動機■は低トルク回転および高トルク回転可能であって
、その出力軸には駆動プーリ２が設けられている。また
、前記型締ハウジング！４には、ベアリング１５ａ、
１５ｂによって支持された段付きの円筒状の回転軸５が
回転可能であるがその軸方向には移動しないように設け
られており、該回転軸５の一端には従動プーリ４が固着
されている。そして、Ｈ２駆動プーリ２と従動プーリ４
とはベルト３によって連動連結されており、型締用電動
機１により、駆動プーリ２、ヘルド３および従動プーリ
４を介して回転軸５が回転される。また、回転軸５の他
端側にはボールナツト６が嵌入固着されており、回転軸
５と一体的に回転する。A mold clamping electric motor is located at an appropriate position on the bed 16, for example, below the mold clamping housing 14! The mold clamping electric motor (2) is capable of low torque rotation and high torque rotation, and a drive pulley 2 is provided on its output shaft. Also, the mold clamping housing! 4 includes a bearing 15a,
A stepped cylindrical rotating shaft 5 supported by the rotating shaft 15b is rotatable but not movable in the axial direction, and a driven pulley 4 is fixed to one end of the rotating shaft 5. . Then, H2 drive pulley 2 and driven pulley 4
The mold clamping motor 1 rotates a rotary shaft 5 via a drive pulley 2, a heald 3, and a driven pulley 4. Further, a ball nut 6 is fitted and fixed to the other end of the rotating shaft 5, and rotates integrally with the rotating shaft 5.
さらに、可動盤９にはボールねじ７の一端を公知の適宜
手段により回転しないように結合し、その他端は前記ボ
ールナツト６に螺合することにより、該ポールナツト６
の回転にともなって、ボールねじ７がその軸方向に往復
移動し、前記可動盤９をタイバー８の軸方向に往復移動
させ得るよう構成した型締機構を備えている。固定盤１
０には固定側金型１１ｂを取付け、可動ｆＩｉＩ９には
可動側金型＋１ａを取付け、前記型締用電動機１を正転
させることによりポールナツト６をボールねじ７が固定
盤ｌＯ力方向移動（以下、「前進」という。）させる方
向へ回転させることにより可動＠９を前進させて型締を
行ない、型締用電動機１を逆回転させることによりポー
ルナツト６をボールねじ７が従動プーリ４側へ移動（以
下、「後退」という。）させる方向へ回転させることに
より可動盤９を後退させて型開きを行なう。一方、型締
用電動機１には、公知のロータリーエンコーダ等からな
る回転検出器２０が設けられており、該回転検出器２０
により型締用電動機１の逆回転の度合を検出し、その検
出値を比較器２１に人力する。また、比較器２１には設
定器２２が接続されており、該設定器２２はあらかじめ
任意の型開き量に相当する設定値を任、位に設定するこ
とができる。そして前記比較器２１は、回転検出器２０
の検出値と設定器２２の設定値とを比較し、両者の値が
一致したとき出力信号を出力し、該出力信号が制御回路
２３に人力されると、該制御回路２３は、型締用電動機
１を高トルク回転させるための指令を出し、ドライバー
アンプ２４を介して型締用電動機１を高トルク回転させ
再型締を行なわせる。Furthermore, one end of the ball screw 7 is connected to the movable platen 9 by a known appropriate means so as not to rotate, and the other end is screwed into the ball nut 6, so that the ball screw 7 can be fixed to the ball nut 6.
A mold clamping mechanism is provided so that the ball screw 7 reciprocates in the axial direction of the tie bar 8 as the ball screw 7 rotates, and the movable platen 9 reciprocates in the axial direction of the tie bar 8. Fixed plate 1
The fixed side mold 11b is attached to the movable side mold 11b, and the movable side die +1a is attached to the movable fIiI9, and by rotating the mold clamping electric motor 1 in the forward direction, the ball screw 7 moves the pole nut 6 in the fixed plate lO force direction (hereinafter referred to as , referred to as "forward"), moves the movable @9 forward to perform mold clamping, and by rotating the mold clamping electric motor 1 in the opposite direction, the ball screw 7 moves the pole nut 6 toward the driven pulley 4. (Hereinafter, referred to as "retraction") By rotating the movable platen 9 in the direction of movement, the movable platen 9 is moved backward and the mold is opened. On the other hand, the mold clamping electric motor 1 is provided with a rotation detector 20 such as a known rotary encoder.
The degree of reverse rotation of the mold clamping electric motor 1 is detected, and the detected value is input to the comparator 21 manually. Further, a setting device 22 is connected to the comparator 21, and the setting device 22 can previously set a setting value corresponding to an arbitrary mold opening amount to any desired position. The comparator 21 includes a rotation detector 20
The detected value is compared with the setting value of the setting device 22, and when the two values match, an output signal is output. When the output signal is inputted to the control circuit 23, the control circuit 23 A command is issued to rotate the electric motor 1 with high torque, and the mold clamping electric motor 1 is rotated with high torque via the driver amplifier 24 to perform mold clamping again.
ついで１本発明の射出圧縮制御方法について説明する。Next, an injection compression control method according to the present invention will be explained.
第１図に示すように、可動盤９が型締ハウジング１４側
（図において左側）へ移動された型開き状態から、型締
用電動機１を、制御回路２３からの指令により低トルク
回転させて可動盤９を固定盤１０の方向へ前進させて型
締を行う。ついで、射出装置１３からキャビティ１２内
へ溶融合成樹脂を射出すると、キャビティ１２内に充填
された溶融合成樹脂の圧力により金型は型開きを生じる
。この型開きにより、可動側金型１１ａが取付けられて
いる可動盤９が後退し、これにともなってボールねじ７
が後退するので、ポールナツト６および回転軸５が逆回
転し、さらには従動プーリ４、ベルト３および駆動プー
リ２を介して型締用電動機１が逆回転される。そして、
この型締用電動機１の逆回転の度合を回転検出器２０に
よって検出し、その検出値とあらかじめ設定器２２に設
定した任意の型開き贋に相当する設定値とを比較器２Ｉ
に人力して比較し、両者が一致したときに比較器２１は
出力信号を出す。そして、前記比較器２１の出力信号が
人力されると、制御回路２３は型締用電動機１を高トル
ク回転させる指令を出し、ドライバアンプ２４を介して
型締用電動機１を高トルク回転させて再型締を行なわせ
、金型キャビティ１２内に充填された溶融合成樹脂を圧
縮する。As shown in FIG. 1, from the mold open state in which the movable platen 9 is moved toward the mold clamping housing 14 (left side in the figure), the mold clamping electric motor 1 is rotated at low torque by a command from the control circuit 23. Mold clamping is performed by moving the movable platen 9 forward toward the fixed platen 10. Next, when the molten synthetic resin is injected into the cavity 12 from the injection device 13, the mold opens due to the pressure of the molten synthetic resin filled in the cavity 12. Due to this mold opening, the movable platen 9 on which the movable side mold 11a is attached moves back, and accordingly, the ball screw 7
is moved backward, so that the pole nut 6 and the rotating shaft 5 rotate in the opposite direction, and further, the mold clamping electric motor 1 is rotated in the opposite direction via the driven pulley 4, the belt 3, and the driving pulley 2. and,
The degree of reverse rotation of the mold clamping electric motor 1 is detected by the rotation detector 20, and the detected value is compared with a set value corresponding to an arbitrary mold opening counterfeit set in the setting device 22 in advance by a comparator 2I.
The comparator 21 outputs an output signal when the two match each other manually. When the output signal of the comparator 21 is manually input, the control circuit 23 issues a command to rotate the mold clamping motor 1 with high torque, and rotates the mold clamping motor 1 with high torque via the driver amplifier 24. The mold is re-clamped and the molten synthetic resin filled in the mold cavity 12 is compressed.
本発明は、上述のように構成されているので、以下に記
載するような効果な臭する。Since the present invention is configured as described above, it provides the following effects.
金型の型開き量を型締用電動機に設けられている回転検
出器により検出するから、従来の技術の位置センサーを
設けたものに比較し、長期にわたって使用しても検出積
度の狂いも生しることがない。Since the amount of mold opening is detected by the rotation detector installed in the mold clamping motor, there is no difference in the detected volume even after long-term use compared to the conventional technology equipped with a position sensor. It never comes to life.
また、別途に位置センサーを設ける必要がないので組立
工程が短縮できるし、安価に製造できる。その上回転検
出器の分解能は、一般に１０００パルス／１回転以上有
しており高精度制御が８紡にできる。Furthermore, since there is no need to provide a separate position sensor, the assembly process can be shortened and manufacturing can be done at low cost. Furthermore, the resolution of the rotation detector is generally greater than 1000 pulses/rotation, allowing high-precision control of eight spins.
第１図は本発明の一実施例の要部断面図、 第２図は従
来の油圧式射出成形機の要部断面図である。
１・・・型締用電動機、 ２・・・駆動プーリ、５
・・・回転軸、
７・・・ボールねし、
９・・・可動盤、
１１ａ・・・可動側金型
１２・・・キャビティ、
２０−・・回転検出器、
２２・・・設定器
２４−）；ライバアンブ。
６・・・ポールナツト。
８・・・タイバー
１０−一固定盤、
１ ｌ ｂ −・・固定側金型、
１３・−射出装置、
２１−・・比較器、
２３・−制御回路、FIG. 1 is a sectional view of a main part of an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a conventional hydraulic injection molding machine. 1... Mold clamping electric motor, 2... Drive pulley, 5
... Rotating shaft, 7... Ball screw, 9... Movable plate, 11a... Movable side mold 12... Cavity, 20-... Rotation detector, 22... Setting device 24 -); Raibaanbu. 6... Paul Natsuto. 8...Tie bar 10--fixed plate, 1 lb--fixed side mold, 13--injection device, 21--comparator, 23--control circuit,
Claims (1)
たのち、金型キャビティ（１２）内へ溶融合成樹脂を射
出し、金型キャビティ（１２）内に充填された溶融合成
樹脂圧力による金型の型開きによる前記型締用電動機（
１）の逆回転の度合を検出し、この検出値とあらかじめ
設定しておいた任意の型開き量に相当する設定値とが一
致したとき、前記型締用電動機（１）を高トルク回転さ
せて再型締を行なわせる電動式射出成形機の射出圧縮制
御方法。 ２、型締機構を駆動するための低トルク回転および高ト
ルク回転可能な型締用電動機（１）に、金型の型開きに
よる前記型締用電動機（１）の逆回転の度合を検出する
ための回転検出器（２０）を設ける一方、あらかじめ任
意の型開き量に相当する設定値を設定できる設定器（２
２）を備え、さらに、前記回転検出器（２０）の検出値
と前記設定器（２２）の設定値とを比較して両者が一致
したとき出力信号を出す比１１２０を設け、該比較器（
２１）の出力信号が入力されると前記型締用電動機（１
）を高トルク回転させて再型締を行なわせる指令を出す
制御回路（２３）を設けた電動式射出成形機の射出圧縮
制御装置。[Claims] 1. After clamping the mold by rotating the mold clamping electric motor (1) at low torque, injecting molten synthetic resin into the mold cavity (12); The mold clamping electric motor (
1) The degree of reverse rotation is detected, and when this detected value matches a set value corresponding to an arbitrary mold opening amount set in advance, the mold clamping electric motor (1) is rotated with high torque. An injection compression control method for an electric injection molding machine that re-clamps the mold. 2. A mold clamping electric motor (1) capable of low-torque rotation and high-torque rotation for driving the mold clamping mechanism detects the degree of reverse rotation of the mold clamping electric motor (1) due to opening of the mold. A rotation detector (20) is provided for this purpose, while a setting device (20) is provided that can set a setting value corresponding to an arbitrary mold opening amount in advance.
2), and further includes a ratio 1120 that compares the detection value of the rotation detector (20) and the setting value of the setting device (22) and outputs an output signal when the two match, and the comparator (
When the output signal of 21) is input, the mold clamping electric motor 1
) An injection compression control device for an electric injection molding machine equipped with a control circuit (23) that issues a command to re-clamp the mold by rotating it with high torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63159070A JPH0755528B2 (en) | 1988-06-29 | 1988-06-29 | Injection compression control method and device for electric injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63159070A JPH0755528B2 (en) | 1988-06-29 | 1988-06-29 | Injection compression control method and device for electric injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH029614A true JPH029614A (en) | 1990-01-12 |
| JPH0755528B2 JPH0755528B2 (en) | 1995-06-14 |
Family
ID=15685563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63159070A Expired - Fee Related JPH0755528B2 (en) | 1988-06-29 | 1988-06-29 | Injection compression control method and device for electric injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0755528B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04223125A (en) * | 1990-12-26 | 1992-08-13 | Toyoda Gosei Co Ltd | Injection compression molder |
| JPH04246523A (en) * | 1991-01-31 | 1992-09-02 | Japan Steel Works Ltd:The | Injection compression molding method |
| WO1998025751A1 (en) * | 1996-12-13 | 1998-06-18 | Karl Hehl | Process for manufacturing injection mouldings |
| WO2000015407A1 (en) * | 1998-09-16 | 2000-03-23 | Mannesmann Vdo Ag | Device and method for injection-compression moulding |
| JP2002036319A (en) * | 2000-07-19 | 2002-02-05 | Sumitomo Heavy Ind Ltd | Method for controlling injection molding machine |
| NL1019320C2 (en) * | 2001-11-07 | 2003-04-28 | Novem Internat B V | Formation of thin-walled products from plastic mold comprises introducing heated plastic in mold cavity while mold is partly open, and pressing away plastic in mold cavity by wall parts of mold cavity |
| NL1019235C2 (en) * | 2001-10-25 | 2003-04-28 | Novem Internat B V | Formation of thin-walled products from plastic mold comprises introducing heated plastic in mold cavity while mold is partly open, and pressing away plastic in mold cavity by wall parts of mold cavity |
| WO2003039838A1 (en) * | 2001-10-25 | 2003-05-15 | Fountain Patents B.V.I.O | Method and apparatus for forming thin-walled products, and a product manufactured therewith |
| WO2006042772A1 (en) * | 2004-10-20 | 2006-04-27 | Demag Ergotech Gmbh | Method for injection stamping a thermoplastic material |
| US20190105815A1 (en) * | 2015-12-21 | 2019-04-11 | Compagnie Plastic Omnium | Mold For Manufacturing Plastics Parts Comprising An Optimized System For Adjusting The Volume Of The Molding Chamber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59187826A (en) * | 1983-04-08 | 1984-10-25 | Nissei Plastics Ind Co | Mold clamping method of molding machine |
-
1988
- 1988-06-29 JP JP63159070A patent/JPH0755528B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59187826A (en) * | 1983-04-08 | 1984-10-25 | Nissei Plastics Ind Co | Mold clamping method of molding machine |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04223125A (en) * | 1990-12-26 | 1992-08-13 | Toyoda Gosei Co Ltd | Injection compression molder |
| JPH04246523A (en) * | 1991-01-31 | 1992-09-02 | Japan Steel Works Ltd:The | Injection compression molding method |
| WO1998025751A1 (en) * | 1996-12-13 | 1998-06-18 | Karl Hehl | Process for manufacturing injection mouldings |
| WO2000015407A1 (en) * | 1998-09-16 | 2000-03-23 | Mannesmann Vdo Ag | Device and method for injection-compression moulding |
| JP2002036319A (en) * | 2000-07-19 | 2002-02-05 | Sumitomo Heavy Ind Ltd | Method for controlling injection molding machine |
| NL1019235C2 (en) * | 2001-10-25 | 2003-04-28 | Novem Internat B V | Formation of thin-walled products from plastic mold comprises introducing heated plastic in mold cavity while mold is partly open, and pressing away plastic in mold cavity by wall parts of mold cavity |
| WO2003039838A1 (en) * | 2001-10-25 | 2003-05-15 | Fountain Patents B.V.I.O | Method and apparatus for forming thin-walled products, and a product manufactured therewith |
| US7718110B2 (en) | 2001-10-25 | 2010-05-18 | Ecim Technologies B.V. | Method and apparatus for forming thin-walled products, and a product manufactured therewith |
| NL1019320C2 (en) * | 2001-11-07 | 2003-04-28 | Novem Internat B V | Formation of thin-walled products from plastic mold comprises introducing heated plastic in mold cavity while mold is partly open, and pressing away plastic in mold cavity by wall parts of mold cavity |
| WO2006042772A1 (en) * | 2004-10-20 | 2006-04-27 | Demag Ergotech Gmbh | Method for injection stamping a thermoplastic material |
| US7682550B2 (en) | 2004-10-20 | 2010-03-23 | Sumitomo (Shi) Demag Plastics Machinery Gmbh | Method of compression molding thermoplastic material |
| US20190105815A1 (en) * | 2015-12-21 | 2019-04-11 | Compagnie Plastic Omnium | Mold For Manufacturing Plastics Parts Comprising An Optimized System For Adjusting The Volume Of The Molding Chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0755528B2 (en) | 1995-06-14 |
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