JPH04290717A - Injection molding machine - Google Patents
Injection molding machineInfo
- Publication number
- JPH04290717A JPH04290717A JP5431391A JP5431391A JPH04290717A JP H04290717 A JPH04290717 A JP H04290717A JP 5431391 A JP5431391 A JP 5431391A JP 5431391 A JP5431391 A JP 5431391A JP H04290717 A JPH04290717 A JP H04290717A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- servo motor
- hydraulic
- speed
- electric servo
- 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
- 238000001746 injection moulding Methods 0.000 title claims description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 238000000465 moulding Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035939 shock Effects 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
- B29C45/68—Mould opening, closing or clamping devices hydro-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
Description
【０００１】0001
【産業上の利用分野】本発明はプラスチック成形品を製
造するための射出成形機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding machine for producing plastic molded articles.
【０００２】0002
【従来の技術】従来、プラスチック射出成形機における
型締め機構には直圧式とトグル式とがある。この両方式
において型締めを行うための駆動源には油圧機構あるい
は電動サ−ボモ−タが使われる。従来の射出成形機にお
ける直圧式の型締め機構部の説明図を油圧駆動に関して
図３に、また、電動サ−ボモ−タ駆動に関して図４に示
す。図３に示すように、油圧駆動における直圧式では油
圧シリンダ１内への油の流出入による油圧力により油圧
ピストン２に連結した可動盤７および可動型１０の移動
を行い、金型の開閉および締付けを行う。トグル式では
油圧力によりトグルリンク機構を駆動させて金型の開閉
を行い、タイバ−を伸ばしてその弾性回復力により金型
を締付ける。2. Description of the Related Art Conventionally, there are two types of mold clamping mechanisms in plastic injection molding machines: a direct pressure type and a toggle type. In both of these types, a hydraulic mechanism or an electric servo motor is used as the drive source for clamping the mold. Explanatory diagrams of a direct pressure mold clamping mechanism in a conventional injection molding machine are shown in FIG. 3 for hydraulic drive, and in FIG. 4 for electric servo motor drive. As shown in FIG. 3, in the direct pressure type of hydraulic drive, the movable platen 7 and the movable mold 10 connected to the hydraulic piston 2 are moved by the hydraulic pressure caused by the inflow and outflow of oil into the hydraulic cylinder 1, and the mold is opened and closed. Perform tightening. In the toggle type, the toggle link mechanism is driven by hydraulic pressure to open and close the mold, and the tie bar is extended and its elastic recovery force tightens the mold.
【０００３】また、図４に示すように、電動サ−ボモ−
タ駆動における直圧式では電動サ−ボモ−タ３の回転を
歯車６を通してボ−ルナット５に伝え、ボ−ルねじ４と
連結した可動盤７および可動型１０の移動により金型の
開閉を行い、電動サ−ボモ−タ３のトルク力により金型
の締付けを行う。トグル式では電動サ−ボモ−タの回転
を歯車を通してボ−ルねじに伝え、ボ−ルナットと連結
したトグルリンク機構を駆動させ金型の開閉を行い、タ
イバ−を伸ばしてその弾性回復力により金型を締付ける
。このように、直圧式、トグル式による型締め機構は油
圧機構あるいは電動サ−ボモ−タそれぞれ単独で駆動さ
れ、金型の開閉および締付けが制御される。また、特開
平２−１２１８０７号公報に記載のように、金型の開閉
を電動サ−ボモ−タで行い、型締め力の発生を油圧で行
う方法が発明されている。Furthermore, as shown in FIG. 4, an electric servo motor
In the direct pressure type of motor drive, the rotation of the electric servo motor 3 is transmitted to the ball nut 5 through the gear 6, and the mold is opened and closed by moving the movable platen 7 and the movable mold 10 connected to the ball screw 4. , the mold is tightened by the torque force of the electric servo motor 3. In the toggle type, the rotation of the electric servo motor is transmitted to the ball screw through gears, driving the toggle link mechanism connected to the ball nut to open and close the mold, and the tie bar is extended and its elastic recovery force is used to open and close the mold. Tighten the mold. In this way, the direct pressure type and toggle type mold clamping mechanisms are each independently driven by a hydraulic mechanism or an electric servo motor to control the opening/closing and tightening of the mold. Furthermore, as described in Japanese Unexamined Patent Publication No. 2-121807, a method has been invented in which the mold is opened and closed by an electric servo motor and the clamping force is generated by hydraulic pressure.
【０００４】0004
【発明が解決しようとする課題】従来技術において、油
圧機構により金型の開閉および型締めを行う場合、金型
の開閉を高速、かつ、スム−ズに行え、また小型装置で
大きな型締め力を発生することができる。しかし、射出
成形した成形品を冷却後取り出すために金型を開く型開
時における低速制御が正確に行えず不安定になるという
欠点がある。この型開き時に金型に密着した成形品は可
動型および固定型に引張られるが可動型に設けられたア
ンダ−カットにより可動型に保持され固定型から離型す
る。この時の型開速度が速い場合や不安定である場合、
成形品は離型時に大きな力を受けて変形する。そのため
、成形品の離型時の型開きは低速かつ安定に行う必要が
あり、とくに精密成形品の成形では型開き時の正確な低
速制御が必要となる。油圧機構では油圧シリンダへの油
の流量調整により速度制御を行うが少量の流量調整を必
要とする低速制御は不安定となり、成形品は離型時に変
形し、そのばらつきも大きくなるという問題があった。[Problems to be Solved by the Invention] In the prior art, when opening, closing, and clamping a mold using a hydraulic mechanism, it is possible to open and close the mold at high speed and smoothly, and to achieve a large mold clamping force with a small device. can occur. However, there is a drawback that the low speed control cannot be performed accurately when the mold is opened in order to take out the injection molded product after cooling, resulting in instability. When the mold is opened, the molded product that is in close contact with the mold is pulled by the movable mold and the fixed mold, but is held by the movable mold by the undercut provided in the movable mold and released from the fixed mold. If the mold opening speed at this time is fast or unstable,
Molded products are deformed by large forces when released from the mold. Therefore, it is necessary to open the mold at low speed and stably when releasing the molded product, and in particular, when molding a precision molded product, accurate low speed control is required when opening the mold. In a hydraulic mechanism, speed is controlled by adjusting the flow rate of oil to the hydraulic cylinder, but low-speed control that requires a small amount of flow rate adjustment becomes unstable, and there is a problem that the molded product deforms when released from the mold and the variation in deformation becomes large. Ta.
【０００５】一方、電動サ−ボモ−タにより金型の開閉
および型締めを行う場合、金型の開閉時の速度はモ−タ
回転数により正確に制御することができる。従って、型
開き時の低速制御は正確、かつ、安定に行うことができ
る。しかし、電動サ−ボモ−タにより大きな型締め力を
出すためには大出力のモ−タが必要なため、装置が大き
くなりコストも高くなる。また、電動サ−ボモ−タによ
り金型の開閉を高速で行うと速度切替え時および停止時
のショックが大きく、装置を痛めるため高速運転ができ
ない。On the other hand, when the mold is opened, closed, and clamped using an electric servo motor, the speed at which the mold is opened and closed can be accurately controlled by the rotational speed of the motor. Therefore, low speed control during mold opening can be performed accurately and stably. However, in order to generate a large mold clamping force using an electric servo motor, a high output motor is required, which increases the size of the device and increases the cost. Furthermore, if the mold is opened and closed at high speed using an electric servo motor, the shocks generated during speed switching and stopping will be large, damaging the device and preventing high-speed operation.
【０００６】このように、油圧機構あるいは電動サ−ボ
モ−タによる金型の開閉および型締めをそれぞれ単独で
行うと高精度および高速成形ができなかった。[0006] As described above, if the opening/closing and clamping of the mold were performed independently using a hydraulic mechanism or an electric servo motor, high precision and high speed molding could not be achieved.
【０００７】また、特開平２−１２１８０７号公報に記
載の方法では電動サ−ボモ−タで金型の開閉を行うため
高速成形が不可能であり、型開きを油圧で行うため低速
制御が不安定になった。Furthermore, in the method described in JP-A-2-121807, high-speed molding is impossible because the mold is opened and closed using an electric servo motor, and low-speed control is not possible because the mold is opened using hydraulic pressure. It became stable.
【０００８】本発明の目的は型締め機構部を油圧機構と
電動サ−ボモ−タとを組合せて構成し、油圧機構で高速
な金型開閉および型締めの制御を行い、電動サ−ボモ−
タで型開き時の低速制御を正確に行うことにより、成形
品の離型時の変形を防ぎ、さらに高速成形を可能にし、
また、これにより高精度なプラスチック成形品を提供す
ることにある。An object of the present invention is to configure a mold clamping mechanism by combining a hydraulic mechanism and an electric servo motor, to control high-speed mold opening/closing and mold clamping with the hydraulic mechanism, and to use the electric servo motor.
By accurately controlling the low speed when opening the mold with a machine, it prevents deformation of the molded product when it is released from the mold, and enables high-speed molding.
Another object of this invention is to provide a highly accurate plastic molded product.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明は射出成形機の型締機構部を油圧機構と電動
サ−ボモ−タとを組合せて構成し、油圧機構で高速な金
型開閉および型締を行い、電動サ−ボモ−タで型開時の
低速制御を正確に行う。[Means for Solving the Problems] In order to achieve the above object, the present invention configures the mold clamping mechanism of an injection molding machine by combining a hydraulic mechanism and an electric servo motor, and uses the hydraulic mechanism to perform high-speed molding. The mold opens, closes and closes, and the electric servo motor accurately controls the low speed when opening the mold.
【００１０】0010
【作用】油圧機構は金型の開閉を高速、かつ、スム−ズ
に行うことができ、また小型な装置で大きな型締力を発
生することができる。電動サ−ボモ−タは回転数調整に
よる速度、位置制御に適しており成形品が離型する型開
時の低速制御を正確、かつ、安定に行うことができる。
また、小型で小出力な電動サ−ボモ−タを使用すること
ができる。[Operation] The hydraulic mechanism can open and close the mold at high speed and smoothly, and can generate a large mold clamping force with a small device. The electric servo motor is suitable for speed and position control by adjusting the rotation speed, and can accurately and stably control the low speed when opening the mold to release the molded product. Furthermore, a small and low output electric servo motor can be used.
【００１１】従って、型締機構部を油圧機構と電動サ−
ボモ−タとを組合せて構成することにより、金型の高速
型開閉および型締を油圧機構で制御し、型開き時の低速
制御を電動サ−ボモ−タで行うことにより成形品の変形
を防ぐことができ、高精度、かつ、高速な成形を行うこ
とができる。[0011] Therefore, the mold clamping mechanism section is made up of a hydraulic mechanism and an electric service.
By combining this with a servo motor, high-speed mold opening/closing and clamping of the mold are controlled by a hydraulic mechanism, and low-speed control during mold opening is performed by an electric servo motor, thereby preventing deformation of the molded product. can be prevented, and high-precision and high-speed molding can be performed.
【００１２】0012
【実施例】本発明の実施例について図面を参照しながら
説明する。図１は本発明の一実施例における射出成形機
の直圧式型締機構部の説明図を示す。型締機構部は油圧
シリンダ１、油圧ピストン２、電動サ−ボモ−タ３、ボ
−ルねじ４、ボ−ルナット５、歯車６、可動盤７、固定
盤８、タイバ−９および連結部品から構成され、可動盤
７、固定盤８に可動型１０、固定型１１が取付けられる
。本実施例では油圧ピストン２とボ−ルナット５が連結
し、ボ−ルねじ４と可動盤７が連結した構造となってい
る。成形過程で油圧シリンダ１へ油圧源１２から制御弁
１３を通した油の流入により油圧ピストン２と一体とな
っている可動盤７を前進させ金型を閉じ、油圧力により
型締を行う。射出−冷却過程を経て成形品が成形され、
これを取り出すために型開が行われる。この型開は電動
サ−ボモ−タ３の回転を歯車６を通してボ−ルナット５
に伝え、ボ−ルねじ４に連結した可動盤７を低速で移動
させることにより行われる。この時、油圧シリンダ１内
の油圧力により油圧ピストンは動かないように制御する
。ここでは、ボ−ルナット５を回転させているが、ボ−
ルねじ４を回転させる構造としてもよい。この時の型開
速度は電動サ−ボモ−タ３の回転数調整により行われる
ため、低速制御も正確、かつ、安定に行うことができる
。そして、成形品が固定型１１から離型した後、油圧シ
リンダ１へ油圧源１２から制御弁１３を通した油の流入
により可動盤７および可動型１０の移動を高速で行い型
開きを完了させ成形品の取り出しを行う。このように、
型締機構部を油圧機構と電動サ−ボモ−タとの組合せに
より構成し、油圧機構で金型の高速な開閉および型締の
制御を行い、電動サ−ボモ−タの回転数調整により型開
時の低速制御を行う。これにより、離型時の成形品の変
形を防ぐことができ、また安定な高速成形を行うことが
できる。Embodiments Examples of the present invention will be described with reference to the drawings. FIG. 1 shows an explanatory diagram of a direct pressure mold clamping mechanism of an injection molding machine in an embodiment of the present invention. The mold clamping mechanism consists of a hydraulic cylinder 1, hydraulic piston 2, electric servo motor 3, ball screw 4, ball nut 5, gear 6, movable platen 7, fixed platen 8, tie bar 9, and connecting parts. A movable mold 10 and a fixed mold 11 are attached to a movable platen 7 and a fixed platen 8. In this embodiment, a hydraulic piston 2 and a ball nut 5 are connected, and a ball screw 4 and a movable platen 7 are connected. During the molding process, oil flows into the hydraulic cylinder 1 from the hydraulic source 12 through the control valve 13, which moves the movable platen 7 integrated with the hydraulic piston 2 forward, closes the mold, and performs mold clamping by hydraulic pressure. The molded product is formed through an injection-cooling process,
The mold is opened to take it out. In this mold opening, the rotation of the electric servo motor 3 is passed through the gear 6 to the ball nut 5.
This is done by transmitting the information to the user and moving the movable platen 7 connected to the ball screw 4 at low speed. At this time, the hydraulic piston is controlled not to move by the hydraulic pressure within the hydraulic cylinder 1. Here, the ball nut 5 is being rotated.
It is also possible to have a structure in which the screw 4 is rotated. Since the mold opening speed at this time is controlled by adjusting the rotation speed of the electric servo motor 3, low speed control can also be performed accurately and stably. After the molded product is released from the fixed mold 11, the movable platen 7 and the movable mold 10 are moved at high speed by the inflow of oil from the hydraulic power source 12 into the hydraulic cylinder 1 through the control valve 13, and the mold opening is completed. Take out the molded product. in this way,
The mold clamping mechanism consists of a combination of a hydraulic mechanism and an electric servo motor.The hydraulic mechanism controls the high-speed opening and closing of the mold and mold clamping, and the mold is controlled by adjusting the rotation speed of the electric servo motor. Performs low speed control when opening. This makes it possible to prevent deformation of the molded product during demolding and to perform stable high-speed molding.
【００１３】図２は本発明の第二の実施例を示す射出成
形機のトグル式型締機構部の説明図である。型締機構部
は油圧シリンダ１、油圧ピストン２、トグル機構部（ク
ロスヘッドリンク１４、前部トグルリンク１５、後部ト
グルリンク１６）、電動サ−ボモ−タ３、ボ−ルねじ４
、ボ−ルナット５、歯車６、可動盤７、固定盤８、タイ
バ−９および連結部品から構成され、可動盤７、固定盤
８に可動型１０、固定型１１が取付けられる。本実施例
ではトグル機構とボ−ルナット５が連結し、ボ−ルねじ
４と可動盤７が連結した構造となっている。成形過程で
油圧シリンダ１へ油圧源１２から制御弁１３を通した油
の流入により油圧ピストン２およびこれに連結したクロ
スヘッドリンク１４が前進することにより前部トグルリ
ンク１５および後部トグルリンク１６が伸びてトグル機
構と一体となっている可動盤７が前進し金型は閉じる。
トグルリンクが伸びきると同時にタイバ−９が伸びるよ
うに調整することによりその弾性回復力で型締めを行う
。射出−冷却過程を経て成形品が成形され、これを取り
出すために型開きが行われる。この型開きは電動サ−ボ
モ−タ３の回転を歯車６を通してボ−ルナット５に伝え
、ボ−ルねじ４に連結した可動盤７を低速で移動させる
ことにより行われる。ここでは、ボ−ルナット５を回転
させているが、ボ−ルねじ４を回転させる構造としても
よい。この時の型開き速度は電動サ−ボモ−タ３の回転
数調整により行われるため低速制御も正確、かつ、安定
に行うことができる。そして、成形品が固定型１１から
離型した後、油圧シリンダ１へ油圧源１２から制御弁１
３を通した油の流入により伸びきったトグルリンクをゆ
るめ、可動盤７および可動型１０の移動を高速で行い型
開きを完了させ成形品の取り出しを行う。FIG. 2 is an explanatory diagram of a toggle type mold clamping mechanism of an injection molding machine showing a second embodiment of the present invention. The mold clamping mechanism includes a hydraulic cylinder 1, a hydraulic piston 2, a toggle mechanism (crosshead link 14, front toggle link 15, rear toggle link 16), electric servo motor 3, and ball screw 4.
, a ball nut 5, a gear 6, a movable platen 7, a fixed platen 8, a tie bar 9, and connecting parts.A movable mold 10 and a fixed mold 11 are attached to the movable platen 7 and the fixed platen 8. In this embodiment, the toggle mechanism and the ball nut 5 are connected, and the ball screw 4 and the movable platen 7 are connected. During the molding process, oil flows into the hydraulic cylinder 1 from the hydraulic source 12 through the control valve 13, causing the hydraulic piston 2 and the crosshead link 14 connected thereto to move forward, causing the front toggle link 15 and rear toggle link 16 to extend. The movable platen 7 integrated with the toggle mechanism moves forward and the mold closes. By adjusting the tie bar 9 to extend at the same time as the toggle link is fully extended, the mold is clamped using its elastic recovery force. A molded product is formed through an injection-cooling process, and the mold is opened to take it out. This mold opening is performed by transmitting the rotation of the electric servo motor 3 to the ball nut 5 through the gear 6, and moving the movable platen 7 connected to the ball screw 4 at a low speed. Although the ball nut 5 is rotated here, the structure may be such that the ball screw 4 is rotated. Since the mold opening speed at this time is controlled by adjusting the rotation speed of the electric servo motor 3, low speed control can also be performed accurately and stably. After the molded product is released from the fixed mold 11, the hydraulic pressure source 12 is transferred to the hydraulic cylinder 1 from the control valve 1.
The fully extended toggle link is loosened by the inflow of oil through 3, and the movable platen 7 and movable mold 10 are moved at high speed to complete mold opening and take out the molded product.
【００１４】以上、二実施例について述べたが、型締め
機構部を油圧機構と電動サ−ボモ−タとの組合せにより
構成し、油圧機構で金型の高速な開閉および型締めの制
御を行い、電動サ−ボモ−タの回転数調整により成形品
が離型する型開き時の低速制御を正確かつ安定に行うこ
とにより、離型時の成形品の変形を防ぐことができ、ま
た安定な高速成形を行うことができる。Two embodiments have been described above, and the mold clamping mechanism is constructed by a combination of a hydraulic mechanism and an electric servo motor, and the hydraulic mechanism controls the high-speed opening and closing of the mold and the mold clamping. By adjusting the rotation speed of the electric servo motor to accurately and stably control the low speed during mold opening when the molded product is released, it is possible to prevent the molded product from deforming during mold release, and to ensure stable Can perform high-speed molding.
【００１５】[0015]
【発明の効果】本発明は、プラスチック射出成形機の型
締機構部を油圧機構と電動サ−ボモ−タとの組合せによ
り構成し、油圧機構で高速な金型開閉および型締の制御
を行い、電動サ−ボモ−タで型開時の低速制御を行った
。これにより、成形品が離型する型開時の低速制御を正
確、かつ、安定に行え、離型時の成形品の変形を防ぐこ
とができ、また安定な高速成形を行うことができる。
従って、この射出成形機は高精度が要求されるプラスチ
ック成形品、例えば、光ディスクなどの成形に適してい
る。[Effects of the Invention] According to the present invention, the mold clamping mechanism of a plastic injection molding machine is configured by a combination of a hydraulic mechanism and an electric servo motor, and the hydraulic mechanism controls high-speed mold opening/closing and mold clamping. An electric servo motor was used to control the low speed during mold opening. This makes it possible to accurately and stably control the low speed during mold opening when the molded product is released from the mold, to prevent deformation of the molded product during mold release, and to perform stable high-speed molding. Therefore, this injection molding machine is suitable for molding plastic molded products that require high precision, such as optical discs.
【図１】本発明の第一実施例を示す射出成形機の直圧式
型締機構部の説明図。FIG. 1 is an explanatory diagram of a direct pressure mold clamping mechanism of an injection molding machine showing a first embodiment of the present invention.
【図２】本発明の第２実施例を示す射出成形機のトグル
式型締機構部の説明図。FIG. 2 is an explanatory diagram of a toggle type mold clamping mechanism of an injection molding machine showing a second embodiment of the present invention.
【図３】従来例における射出成形機の油圧駆動に関する
直圧式型締機構部の説明図。FIG. 3 is an explanatory diagram of a direct pressure mold clamping mechanism related to hydraulic drive of an injection molding machine in a conventional example.
【図４】従来例における射出成形機の電動サ−ボモ−タ
駆動に関する直圧式型締機構部の説明図。FIG. 4 is an explanatory diagram of a direct pressure mold clamping mechanism related to electric servo motor drive of an injection molding machine in a conventional example.
１……油圧シリンダ ２……油圧ピストン ３……電動サ−ボモ−タ ４……ボ−ルねじ ５……ボ−ルナット ６……歯車 ７……可動盤 ８……固定盤 ９……タイバ− １０…可動型 １１…固定型 １２…油圧源 １３…制御弁 1...Hydraulic cylinder 2...Hydraulic piston 3...Electric servo motor 4...Ball screw 5...Ball nut 6...Gear 7...Movable board 8...Fixed plate 9...Tie bar 10...Movable type 11...Fixed type 12...Hydraulic power source 13...Control valve
Claims (1)
機構部を油圧機構と電動サ−ボモ−タとの組合せにより
構成し、前記油圧機構で高速な金型の開閉および型締め
の制御を行い、電動サ−ボモ−タで型開時の低速制御を
行うことを特徴とする射出成形機。1. In a plastic injection molding machine, a mold clamping mechanism is configured by a combination of a hydraulic mechanism and an electric servo motor, and the hydraulic mechanism controls high-speed mold opening/closing and mold clamping, An injection molding machine characterized by low speed control during mold opening using an electric servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5431391A JPH04290717A (en) | 1991-03-19 | 1991-03-19 | Injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5431391A JPH04290717A (en) | 1991-03-19 | 1991-03-19 | Injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04290717A true JPH04290717A (en) | 1992-10-15 |
Family
ID=12967092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5431391A Pending JPH04290717A (en) | 1991-03-19 | 1991-03-19 | Injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04290717A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006315050A (en) * | 2005-05-13 | 2006-11-24 | Toyo Mach & Metal Co Ltd | Die casting machine |
| JP2010076001A (en) * | 2009-12-02 | 2010-04-08 | Toyo Mach & Metal Co Ltd | Die-casting machine |
| CN110576574A (en) * | 2019-09-09 | 2019-12-17 | 何兆洪 | Injection compression molding process and apparatus |
-
1991
- 1991-03-19 JP JP5431391A patent/JPH04290717A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006315050A (en) * | 2005-05-13 | 2006-11-24 | Toyo Mach & Metal Co Ltd | Die casting machine |
| JP4669733B2 (en) * | 2005-05-13 | 2011-04-13 | 東洋機械金属株式会社 | Die casting machine |
| JP2010076001A (en) * | 2009-12-02 | 2010-04-08 | Toyo Mach & Metal Co Ltd | Die-casting machine |
| CN110576574A (en) * | 2019-09-09 | 2019-12-17 | 何兆洪 | Injection compression molding process and apparatus |
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