JPH06304984A - Injection compression molding device - Google Patents
Injection compression molding deviceInfo
- Publication number
- JPH06304984A JPH06304984A JP11920093A JP11920093A JPH06304984A JP H06304984 A JPH06304984 A JP H06304984A JP 11920093 A JP11920093 A JP 11920093A JP 11920093 A JP11920093 A JP 11920093A JP H06304984 A JPH06304984 A JP H06304984A
- Authority
- JP
- Japan
- Prior art keywords
- die plate
- mold
- mold clamping
- ram
- clamping cylinder
- 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
- 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
- B29C45/67—Mould opening, closing or clamping devices hydraulic
- B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
- B29C45/6714—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould
- B29C45/6728—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould the separate element consisting of coupling rods
-
- 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
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】本発明は製品キャビティに所定の
樹脂を充填後、金型を圧縮することにより、その充填樹
脂を圧縮する射出圧縮成形装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection compression molding apparatus for compressing a filling resin by filling a product cavity with a predetermined resin and then compressing a mold.
【０００２】[0002]
【従来の技術】従来の射出圧縮成形装置の例を図３〜図
５により説明すると、図４の型締装置は固定金型（キャ
ビティ型）２を保持する固定ダイプレート４と、移動金
型（コア型）１を保持する移動ダイプレート３と、同移
動ダイプレート３を固定ダイプレート４に対して進退動
作させる手段と、移動ダイプレート３が固定ダイプレー
ト４に接近し、固定金型と移動金型が型閉じした後に固
定ダイプレート４と結合固定されて型締めを行うタイバ
ー１３とを備えている。このタイバー１３は移動ダイプ
レート３又は固定ダイプレート４に固定されており、固
定ダイプレート４と移動ダイプレート３との結合固定
は、同移動ダイプレート３又は固定ダイプレート４の反
金型取付け面に配設され、タイバー１３とほぼ直角方向
に開閉するハーフナット９又はハーフリングにより行う
ようにしている。またハーフナット９又はハーフリング
は、タイバー１３の軸方向にも移動できるよう型厚調整
機構を有している。なお、図３には図４の型締装置で射
出圧縮を行う時のシーケンスが示されている。2. Description of the Related Art A conventional injection compression molding apparatus will be described with reference to FIGS. 3 to 5. The mold clamping apparatus shown in FIG. 4 has a fixed die plate 4 for holding a fixed mold (cavity mold) 2 and a movable mold. A movable die plate 3 for holding the (core type) 1, a means for moving the movable die plate 3 forward and backward with respect to the fixed die plate 4, and a movable die plate 3 approaching the fixed die plate 4 to form a fixed die. The movable die is provided with a fixed die plate 4 and a tie bar 13 that is fixedly coupled to the movable die after the die is closed. The tie bar 13 is fixed to the movable die plate 3 or the fixed die plate 4, and the fixed die plate 4 and the movable die plate 3 are fixedly coupled to each other by the anti-die mounting surface of the movable die plate 3 or the fixed die plate 4. , And a half nut 9 or a half ring that opens and closes in a direction substantially perpendicular to the tie bar 13. Further, the half nut 9 or the half ring has a mold thickness adjusting mechanism so that it can be moved in the axial direction of the tie bar 13. It should be noted that FIG. 3 shows a sequence when injection compression is performed by the mold clamping device of FIG.
【０００３】さて図５に示すようにタイバー１３の係合
溝部１３ａと、タイバー１３の軸方向に型厚調整機構を
もったハーフナット９の係合部９ａとの結合を外した状
態で、図示しない油圧源から方向切換弁１１を介して圧
油を型開閉シリンダ１０へ送ると、移動ダイプレート３
は図中右方へ前進する。この移動ダイプレート３の前進
により、コア型１と固定ダイプレート４に取付けられた
キャビティ型２とを一旦型合わせする。次に型合わせし
た状態でタイバー１３の係合部１３ａへハーフナット９
を入れ、移動ダイプレート３と固定ダイプレート４とを
一旦結合状態にし、このままの状態から型開閉シリンダ
１０により射出圧縮に必要な所定の隙間ｅだけコア型１
とキャビティ型２を開く。そして前記の如く型１，２が
開いたところで、固定ダイプレート４の内部に設けられ
ている型締シリンダ１４のポートＡ，Ｂをブロックし、
移動ダイプレートの位置を固定する（図４の状態）。こ
の状態で射出動作を行い、完了したら型締シリンダ１４
のＡポートに図示しない油圧源から切換弁１２を介して
圧油を入れ、コア型１とキャビティ型２をぴったり合わ
せて冷却し、成形品の射出圧縮成形を行う。なお、図４
においてはハーフナット９と型締シリンダ１４を固定ダ
イプレート４に配設した例で説明したが、射出成形機の
型締力の能力によっては、移動ダイプレート３側にハー
フナット９と型締シリンダ１４とを配設することもあ
る。Now, as shown in FIG. 5, the engaging groove portion 13a of the tie bar 13 and the engaging portion 9a of the half nut 9 having a mold thickness adjusting mechanism in the axial direction of the tie bar 13 are disengaged from each other and shown in the drawing. When pressure oil is sent to the mold opening / closing cylinder 10 from the hydraulic pressure source via the direction switching valve 11, the moving die plate 3
Moves forward to the right in the figure. As the movable die plate 3 advances, the core die 1 and the cavity die 2 attached to the fixed die plate 4 are temporarily aligned. Next, the half nut 9 is attached to the engaging portion 13a of the tie bar 13 in the state of matching the mold.
, The movable die plate 3 and the fixed die plate 4 are once connected to each other, and from this state, the core die 1 is opened by the die opening / closing cylinder 10 by a predetermined gap e required for injection compression.
And open the cavity mold 2. When the molds 1 and 2 are opened as described above, the ports A and B of the mold clamping cylinder 14 provided inside the fixed die plate 4 are blocked.
The position of the moving die plate is fixed (state of FIG. 4). The injection operation is performed in this state, and when completed, the mold clamping cylinder 14
Pressure oil is put into the port A from a hydraulic source (not shown) through the switching valve 12, the core mold 1 and the cavity mold 2 are closely fitted and cooled, and injection molding of the molded product is performed. Note that FIG.
In the above description, the half nut 9 and the mold clamping cylinder 14 are arranged on the fixed die plate 4. However, depending on the mold clamping force of the injection molding machine, the half nut 9 and the mold clamping cylinder may be located on the moving die plate 3 side. 14 may be provided.
【０００４】[0004]
【発明が解決しようとする課題】ところで前記従来装置
では、金型キャビティの面積（ダイプレート面への投影
面積）の重心がダイプレートの中心から外れている場
合、樹脂の射出後型締シリンダによって圧縮を行うと、
キャビティ内に圧力が発生し、この圧力による力は前記
キャビティ面積の重心に近い側の移動ダイプレートと固
定ダイプレートの間隔を広げるように作用する。従って
型締シリンダ１４のラムには夫々異なった力が掛かるこ
とになる。しかしこの時ラムには同じ圧力の圧油が作用
するため、キャビティ面積の重心に近い側のラムの動き
は遅く、遠いほうのラムは早く動くことになり、この結
果両ダイプレートの金型取付面は傾き、従って両金型が
傾く。図６は前記の現象を説明する平面概念図であり、
この図６では型締シリンダ１４が移動ダイプレート３側
にあり、キャビティＣが外側（図６の下側）に偏ってい
る場合を示している。そしてキャビティＣに樹脂を入れ
て型締シリンダ１４で型締圧縮を行うと、前記の如くキ
ャビティＣに近い方の両金型の隙間ｅ１は、遠いほうの
隙間ｅ２より大きくなる。また両金型が傾くとキャビテ
ィの間隔が不均一になり、偏肉した成形品ができたり、
バリやひけが発生するという不具合があった。本発明は
型圧縮工程で、移動ダイプレートがキャビティ内の樹脂
の圧力分布に関係なく固定ダイプレートに対して平行に
前進する新規な射出圧縮成形装置を提供し、前記の問題
点を解決しようとするものである。In the conventional apparatus described above, when the center of gravity of the area of the mold cavity (projected area on the die plate surface) deviates from the center of the die plate, the mold clamping cylinder is used after the resin injection. When you do compression,
A pressure is generated in the cavity, and the force of this pressure acts to widen the distance between the movable die plate and the fixed die plate on the side close to the center of gravity of the cavity area. Therefore, different rams are applied to the rams of the mold clamping cylinder 14. However, at this time, pressure oil of the same pressure acts on the ram, so the ram on the side closer to the center of gravity of the cavity area moves slowly, and the ram on the far side moves faster, which results in the die mounting of both die plates. The surface tilts, and therefore both molds tilt. FIG. 6 is a conceptual plan view for explaining the above phenomenon,
In FIG. 6, the mold clamping cylinder 14 is on the moving die plate 3 side, and the cavity C is biased to the outside (lower side in FIG. 6). When resin is put into the cavity C and the mold clamping cylinder 14 performs mold clamping compression, the gap e1 between the two molds closer to the cavity C becomes larger than the gap e2 farther away as described above. Also, if both dies are tilted, the space between the cavities will be uneven, resulting in a molded product with uneven thickness.
There was a problem that burr and sink marks occurred. The present invention provides a novel injection compression molding apparatus in which a moving die plate is advanced in parallel with a fixed die plate regardless of the pressure distribution of resin in a cavity in a mold compression process, and it is intended to solve the above-mentioned problems. To do.
【０００５】[0005]
【課題を解決するための手段】このため本発明は、固定
金型を保持するダイプレートと、移動金型を保持する移
動ダイプレートと、同移動ダイプレートを固定ダイプレ
ートに対して前後進させる型開閉シリンダと、型閉じ後
に型締めを行うタイバーと、同タイバーを移動ダイプレ
ート又は固定ダイプレートに係止するハーフナットと、
同タイバーに張力を与えて型締めを行うための型締シリ
ンダとから構成される射出圧縮成形装置において、前記
移動ダイプレート又は固定ダイプレートと前記型締シリ
ンダの夫々のラムとの相対距離を測るラム位置検出器を
備え、同ラム位置検出器から位置情報をフィードバック
して夫々のラムが同じ速さで移動して圧縮するよう夫々
の型締シリンダの油圧を制御すべく構成したもので、こ
れを課題解決のための手段とするものである。Therefore, according to the present invention, a die plate holding a fixed die, a moving die plate holding a moving die, and the moving die plate are moved forward and backward with respect to the fixed die plate. A mold opening / closing cylinder, a tie bar for clamping the mold after closing the mold, and a half nut for locking the tie bar to the movable die plate or the fixed die plate,
In an injection compression molding apparatus including a mold clamping cylinder for applying a tension to the tie bar to perform mold clamping, a relative distance between the movable die plate or the fixed die plate and each ram of the mold clamping cylinder is measured. It is equipped with a ram position detector and is configured to feed back position information from the ram position detector to control the hydraulic pressure of each mold clamping cylinder so that each ram moves and compresses at the same speed. Is a means for solving the problem.
【０００６】[0006]
【作用】本発明の射出圧縮成形装置は、夫々の型締シリ
ンダのラムのダイプレートに対する相対位置が計測でき
るラム位置検知器と、同型締シリンダに供給する圧油を
制御する夫々独立したサーボバルブを備えている。そし
て先ず型閉じ後、型締シリンダで一旦型締動作を行っ
て、型締シリンダのラムとハーフナットの間や移動金型
と固定金型の間等にある遊隙を取除いた安定した状態と
し、この状態でそれぞれの型締シリンダのラムの位置を
検出し、このラムの位置（移動ダイプレートに対する相
対的位置）を基準原点位置として制御器に記憶する。以
後の型締圧縮を行う際には、各ラム位置検出器からの位
置情報を制御器に送り前記基準原点位置と比較して移動
量を計算し、前記サーボバルブにフィードバックさせて
各ラムが同じ速さで動くように制御する。従って移動ダ
イプレートは常に固定ダイプレートに対して平行に移動
することになり、前記従来のような不具合は発生しな
い。The injection compression molding apparatus of the present invention includes a ram position detector capable of measuring the relative position of the ram of each mold clamping cylinder with respect to the die plate, and independent servo valves for controlling the pressure oil supplied to the mold clamping cylinder. Is equipped with. First, after the mold is closed, the mold clamping operation is performed once with the mold clamping cylinder to remove the play between the ram and half nut of the mold clamping cylinder and between the movable mold and the fixed mold, and a stable state is obtained. In this state, the position of the ram of each mold clamping cylinder is detected, and the position of this ram (relative position to the moving die plate) is stored in the controller as the reference origin position. When performing subsequent mold clamping compression, the position information from each ram position detector is sent to the controller to calculate the amount of movement by comparing it with the reference origin position and feed back to the servo valve so that each ram is the same. Control to move at high speed. Therefore, the movable die plate always moves in parallel to the fixed die plate, and the above-mentioned conventional problems do not occur.
【０００７】[0007]
【実施例】以下本発明を図面の実施例について説明する
と、図１は本発明の１実施例を示し、１は移動金型、２
は固定金型、３は移動ダイプレート、４は固定ダイプレ
ート、５は型締シリンダ１４のラム、９はハーフナッ
ト、１０は型開閉シリンダ、１１は方向切換弁、１３は
タイバーであり、これらは前記従来例と同じであるため
詳細な説明は省略する。なお、１５は移動ダイプレート
の位置検出器、１６は制御器で、図４には図示省略して
ある。また図１では型締シリンダ１４が移動ダイプレー
ト３に配設された場合を示しているが、従来例のように
固定ダイプレート４に設けてあっても差し支えない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIG. 1 shows one embodiment of the present invention.
Is a fixed die, 3 is a movable die plate, 4 is a fixed die plate, 5 is a ram of the mold clamping cylinder 14, 9 is a half nut, 10 is a mold opening / closing cylinder, 11 is a direction switching valve, and 13 is a tie bar. Since it is the same as the above-mentioned conventional example, detailed description will be omitted. Reference numeral 15 is a position detector for the movable die plate, and 16 is a controller, which are not shown in FIG. Further, although FIG. 1 shows the case where the mold clamping cylinder 14 is provided on the movable die plate 3, it may be provided on the fixed die plate 4 as in the conventional example.
【０００８】次に前記従来例と異なる部分について説明
すると、１７は移動ダイプレートに固設され、同移動ダ
イプレートに対するラム５の相対的位置を検出するため
のラム位置検出器、１８は型締シリンダ１４に供給する
圧油を制御するサーボバルブであり、何れもそれぞれの
型締シリンダ１４に独立して配設されている（図１では
１つだけしか図示されていない）。Explaining the parts different from the above-mentioned conventional example, 17 is fixed to the moving die plate, a ram position detector for detecting the relative position of the ram 5 with respect to the moving die plate, and 18 is a mold clamping. Servo valves for controlling the pressure oil supplied to the cylinders 14, each of which is independently provided in each mold clamping cylinder 14 (only one is shown in FIG. 1).
【０００９】次に前記の如く構成された本発明の実施例
について作用を説明すると、射出圧縮を行う時のシーケ
ンスは図２に示してある。さてハーフナット９をタイバ
ー１３から外した状態で、方向切換弁１１を介して圧油
を型開閉シリンダ１０へ送り、移動ダイプレート３を固
定ダイプレート４の方に前進させ、移動金型１と固定金
型２を当接させて型閉じをする。この型閉じした状態で
タイバー１３にハーフナット９を係合させた後、型締シ
リンダ１４の夫々の油室Ａに圧油を供給して型締動作を
行う。この動作により夫々の型締シリンダ１４のラムの
側面と、ハーフナット９の側面及び移動金型１と固定金
型２は後述の型締昇圧時と同じ力で圧接され、遊隙が取
り除かれて安定した接触状態が得られる。この状態で各
型締シリンダ１４に設けられたラム位置検出器１７で得
られた位置情報を、各型締シリンダのラム５の基準原点
位置として記憶する。The operation of the embodiment of the present invention constructed as described above will be described below. The sequence for injection compression is shown in FIG. With the half nut 9 removed from the tie bar 13, pressure oil is sent to the mold opening / closing cylinder 10 via the direction switching valve 11 to move the moving die plate 3 toward the fixed die plate 4 to move the moving die 1 The fixed mold 2 is brought into contact and the mold is closed. After the half nut 9 is engaged with the tie bar 13 in the mold closed state, pressure oil is supplied to each oil chamber A of the mold clamping cylinder 14 to perform the mold clamping operation. By this operation, the side surfaces of the rams of the respective mold clamping cylinders 14, the side surfaces of the half nuts 9 and the movable mold 1 and the fixed mold 2 are pressed against each other with the same force as at the time of the mold clamping pressure increase described later, and the play is removed. A stable contact state can be obtained. In this state, the position information obtained by the ram position detector 17 provided in each mold clamping cylinder 14 is stored as the reference origin position of the ram 5 of each mold clamping cylinder.
【００１０】次いで型締シリンダ１４の油室Ａ，Ｂの圧
を抜いた後、型開閉シリンダ１０によって移動ダイプレ
ート３を後退させ、位置検出器１５によって移動金型１
と固定金型２との間に射出圧縮に必要な所定の隙間ｅを
作る。ここで型締シリンダ１４の油室Ａ，Ｂを、油圧に
よりブロックして移動ダイプレート３の位置を固定し、
射出機８により樹脂を金型内のキャビティに射出充填す
る。次いで樹脂の充填が完了したら、型締シリンダ１４
の油室Ａに図示省略の油圧源からサーボバルブ１８を介
し圧油を供給して金型１と金型２を圧縮しながら冷却
し、成形品の射出圧縮成形を行う。この圧縮の過程で
は、夫々のラム位置検出器１７から常時位置情報を制御
器１６に送り、前記基準原点位置と比較して進み過ぎて
いるラム５に対してはその移動が遅くなるように、遅れ
ているラム５に対しては速くなるように、サーボバルブ
１８にフィードバックして制御する。従って各ラム５は
同じ速さで前進するので、移動ダイプレート３は常に固
定ダイプレート４に対して平行に移動する。Next, after the pressure in the oil chambers A and B of the mold clamping cylinder 14 is released, the movable die plate 3 is retracted by the mold opening / closing cylinder 10, and the movable mold 1 is moved by the position detector 15.
A predetermined gap e necessary for injection compression is formed between the fixed mold 2 and the fixed mold 2. Here, the oil chambers A and B of the mold clamping cylinder 14 are blocked by hydraulic pressure to fix the position of the moving die plate 3,
The resin is injected and filled into the cavity in the mold by the injection machine 8. Next, when the resin filling is completed, the mold clamping cylinder 14
Pressure oil is supplied to the oil chamber A from a hydraulic source (not shown) through the servo valve 18 to cool the mold 1 and the mold 2 while compressing them, and injection compression molding of the molded product is performed. In the process of this compression, each ram position detector 17 constantly sends the position information to the controller 16 so that the movement of the ram 5 which is too advanced as compared with the reference origin position is delayed. The ram 5 which is delayed is fed back to the servo valve 18 and controlled so that it becomes faster. Therefore, since the rams 5 move forward at the same speed, the moving die plate 3 always moves parallel to the fixed die plate 4.
【００１１】[0011]
【発明の効果】以上詳細に説明した如く本発明によれ
ば、型締圧縮工程で移動ダイプレートは、キャビティ内
の樹脂の圧力分布に関係なく常に固定ダイプレートに対
して平行に前進するので、両金型が傾斜してキャビティ
の幅が位置によって異なることにより成形品が偏肉とな
ったっり、バリができたり、ひけができたりする不具合
が除去される。As described in detail above, according to the present invention, the moving die plate always advances in parallel to the fixed die plate regardless of the pressure distribution of the resin in the cavity during the mold clamping and compression process. Since the molds are inclined and the widths of the cavities are different depending on the positions, defects such as uneven thickness of the molded product, burrs, and sink marks are eliminated.
【図１】本発明の実施例に係る射出圧縮成形装置の平面
断面図である。FIG. 1 is a plan sectional view of an injection compression molding apparatus according to an embodiment of the present invention.
【図２】図１の動作のシーケンス図である。FIG. 2 is a sequence diagram of the operation of FIG.
【図３】従来の射出圧縮成形装置の動作のシーケンス図
である。FIG. 3 is a sequence diagram of an operation of a conventional injection compression molding device.
【図４】従来の射出圧縮成形装置の縦断面図である。FIG. 4 is a vertical sectional view of a conventional injection compression molding device.
【図５】図４のハーフナットの噛合を外した状態の断面
図である。5 is a cross-sectional view of the half nut of FIG. 4 in a disengaged state.
【図６】金型が斜めになったときを示す平面図である。FIG. 6 is a plan view showing a case where the mold is inclined.
１ 移動金型 ２ 固定金型 ３ 移動ダイプレート ４ 固定ダイプレート ９ ハーフナット １０ 型開閉シリンダ １３ タイバー １４ 型締シリンダ １７ ラム位置検出器 １８ サーボバルブ 1 Moving mold 2 Fixed mold 3 Moving die plate 4 Fixed die plate 9 Half nut 10 Mold opening / closing cylinder 13 Tie bar 14 Mold clamping cylinder 17 Ram position detector 18 Servo valve
Claims (1)
動金型を保持する移動ダイプレートと、同移動ダイプレ
ートを固定ダイプレートに対して前後進させる型開閉シ
リンダと、型閉じ後に型締めを行うタイバーと、同タイ
バーを移動ダイプレート又は固定ダイプレートに係止す
るハーフナットと、同タイバーに張力を与えて型締めを
行うための型締シリンダとから構成される射出圧縮成形
装置において、前記移動ダイプレート又は固定ダイプレ
ートと前記型締シリンダの夫々のラムとの相対距離を測
るラム位置検出器を備え、同ラム位置検出器から位置情
報をフィードバックし、夫々のラムが同じ速さで移動し
て圧縮するよう夫々の型締シリンダの油圧を制御すべく
構成したことを特徴とする射出圧縮成形装置。1. A die plate for holding a fixed die, a moving die plate for holding a moving die, a die opening / closing cylinder for moving the moving die plate forward and backward with respect to the fixed die plate, and a die clamping after closing the die. In the injection compression molding apparatus composed of a tie bar for performing, a half nut for locking the tie bar to a moving die plate or a fixed die plate, and a mold clamping cylinder for applying a tension to the tie bar to perform mold clamping, A ram position detector for measuring the relative distance between the movable die plate or fixed die plate and each ram of the mold clamping cylinder is provided, and position information is fed back from the ram position detector so that each ram is at the same speed. An injection compression molding apparatus characterized in that it is configured to control the hydraulic pressure of each mold clamping cylinder so as to move and compress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11920093A JPH06304984A (en) | 1993-04-23 | 1993-04-23 | Injection compression molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11920093A JPH06304984A (en) | 1993-04-23 | 1993-04-23 | Injection compression molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06304984A true JPH06304984A (en) | 1994-11-01 |
Family
ID=14755407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11920093A Pending JPH06304984A (en) | 1993-04-23 | 1993-04-23 | Injection compression molding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06304984A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0740995A2 (en) * | 1995-05-03 | 1996-11-06 | Battenfeld Fischer Blasformtechnik Gmbh | Process and apparatus for the closing of the tool of a plastic processing machine |
| JP2001212829A (en) * | 2000-02-04 | 2001-08-07 | Nok Corp | Mold clamping device |
| WO2006042772A1 (en) * | 2004-10-20 | 2006-04-27 | Demag Ergotech Gmbh | Method for injection stamping a thermoplastic material |
| JP2008110498A (en) * | 2006-10-30 | 2008-05-15 | Meiki Co Ltd | Mold clamping device of injection molding machine |
| JP2011011521A (en) * | 2009-07-06 | 2011-01-20 | Mitsubishi Heavy Industries Plastic Technology Co Ltd | Mold clamping device of injection compression molding machine |
| CN104416845A (en) * | 2013-08-30 | 2015-03-18 | 恩格尔奥地利有限公司 | Screw rod unit, injection unit, closing unit and forming machine |
| CN104416846A (en) * | 2013-08-21 | 2015-03-18 | 恩格尔奥地利有限公司 | Method for operating closing unit of forming machine |
-
1993
- 1993-04-23 JP JP11920093A patent/JPH06304984A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0740995A2 (en) * | 1995-05-03 | 1996-11-06 | Battenfeld Fischer Blasformtechnik Gmbh | Process and apparatus for the closing of the tool of a plastic processing machine |
| EP0740995A3 (en) * | 1995-05-03 | 1999-01-13 | Fischer - W. Müller Blasformtechnik GmbH | Process and apparatus for the closing of the tool of a plastic processing machine |
| JP2001212829A (en) * | 2000-02-04 | 2001-08-07 | Nok Corp | Mold clamping device |
| 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 |
| JP2008110498A (en) * | 2006-10-30 | 2008-05-15 | Meiki Co Ltd | Mold clamping device of injection molding machine |
| JP4671294B2 (en) * | 2006-10-30 | 2011-04-13 | 株式会社名機製作所 | Injection compression molding method for injection molding machine |
| JP2011011521A (en) * | 2009-07-06 | 2011-01-20 | Mitsubishi Heavy Industries Plastic Technology Co Ltd | Mold clamping device of injection compression molding machine |
| CN104416846A (en) * | 2013-08-21 | 2015-03-18 | 恩格尔奥地利有限公司 | Method for operating closing unit of forming machine |
| CN104416845A (en) * | 2013-08-30 | 2015-03-18 | 恩格尔奥地利有限公司 | Screw rod unit, injection unit, closing unit and forming machine |
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