JP3527872B2 - Injection molding machine and its parallelism adjustment method - Google Patents

Injection molding machine and its parallelism adjustment method

Info

Publication number
JP3527872B2
JP3527872B2 JP2000026464A JP2000026464A JP3527872B2 JP 3527872 B2 JP3527872 B2 JP 3527872B2 JP 2000026464 A JP2000026464 A JP 2000026464A JP 2000026464 A JP2000026464 A JP 2000026464A JP 3527872 B2 JP3527872 B2 JP 3527872B2
Authority
JP
Japan
Prior art keywords
tie bar
parallelism
mold
injection molding
mounting plate
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 - Fee Related
Application number
JP2000026464A
Other languages
Japanese (ja)
Other versions
JP2001212859A (en
Inventor
吉哉 谷口
好昭 原
真司 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Music Solutions Inc
Toyo Machinery and Metal Co Ltd
Original Assignee
Toyo Machinery and Metal Co Ltd
Sony Disc Technology Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Machinery and Metal Co Ltd, Sony Disc Technology Inc filed Critical Toyo Machinery and Metal Co Ltd
Priority to JP2000026464A priority Critical patent/JP3527872B2/en
Publication of JP2001212859A publication Critical patent/JP2001212859A/en
Application granted granted Critical
Publication of JP3527872B2 publication Critical patent/JP3527872B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、射出成形機の金型
取付盤に取り付けられた固定・移動金型の互いに対向す
る金型キャビティ面において、極めて高い平行度を実現
する事が出来る射出成形機と前記射出成形機における平
行度調節方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to injection molding capable of achieving extremely high parallelism on the mold cavity surfaces of fixed and moving molds mounted on a mold mounting plate of an injection molding machine, which face each other. Machine and a method for adjusting parallelism in the injection molding machine.

【0002】[0002]

【従来の技術】従来のディスク成形方法にあっては、金
型(51)内に収納されたスタンパ(52)の表面に形成された
無数の情報形成用の微細突起(図示せず)を金型(51)内に
射出された成形樹脂(53)に正確に転写するために、図6
(1)〜(6)に示すような工程が取られている。即ち、同図
(1)に示すように、移動金型(51b)のパーティング面(54
b)が固定金型(51a)のパーティング面(54a)から若干離れ
ている位置で移動金型(51b)を停止させ、この状態で金
型キャビティ(57)に樹脂(53)を射出する(同図(2)参
照)。両者の離間距離を(t)で示す。
2. Description of the Related Art In a conventional disk molding method, a myriad of minute projections (not shown) for forming information are formed on the surface of a stamper (52) housed in a mold (51). In order to accurately transfer to the molding resin (53) injected into the mold (51), as shown in FIG.
The steps shown in (1) to (6) are taken. That is, the figure
As shown in (1), the moving mold (51b) parting surface (54
The moving mold (51b) is stopped at a position where b) is slightly apart from the parting surface (54a) of the fixed mold (51a), and in this state, the resin (53) is injected into the mold cavity (57). (See (2) in the figure). The distance between the two is indicated by (t).

【0003】前記射出充填工程では、前記離間距離(t)
に相当する量の樹脂(53)が、金型キャビティ(57)内に多
めに充填される。そして、射出充填が完了すると、同図
(3)に示すようにゲートカットが行われ、ゲートカット
完了後、サーボモータ駆動のトグル機構のような金型開
閉機構を再度作動させて更に型締を行い、充填樹脂(53)
の圧縮及び保圧冷却を行う(同図(4))。続いて、同図(5)
に示すように型開が行われ、最後に同図(6)に示すよう
に製品取り出しが行われる。
In the injection filling step, the separation distance (t)
A large amount of resin (53) corresponding to is filled in the mold cavity (57). When injection filling is completed,
Gate cutting is performed as shown in (3), and after the gate cutting is completed, the mold opening / closing mechanism such as the servo motor-driven toggle mechanism is operated again to perform further mold clamping, and the filling resin (53)
The compression and cooling with holding pressure are performed ((4) in the same figure). Then, the same figure (5)
The mold opening is performed as shown in FIG. 3, and finally the product is taken out as shown in FIG.

【0004】この方法によると、圧縮保圧冷却工程で成
形品(55)に、射出充填時よりもはるかに大きな圧力がか
かるので、通常の射出成形と異なり充填樹脂(53)の流動
による指向性や歪みの偏りがなく、その上に前述のよう
に金型キャビティ(57)の内圧を極めて高く保持できるの
で、キャビティー形状やスタンパ(52)の表面の微細突起
の転写がよい。従って、例えば、CD、導光板、非球面
レンズのように反りを嫌い且つ高い転写性や平行度が要
求される薄板状の成形品に対して適用される事が多い。
According to this method, since a much larger pressure is applied to the molded product (55) in the compression holding pressure cooling step than in injection filling, the directivity due to the flow of the filling resin (53) is different from the ordinary injection molding. Since the internal pressure of the mold cavity (57) can be kept extremely high as described above, there is no unevenness in the strain, and the shape of the cavity and the transfer of fine projections on the surface of the stamper (52) are good. Therefore, for example, it is often applied to a thin plate-shaped molded product such as a CD, a light guide plate, and an aspherical lens, which does not warp and which requires high transferability and parallelism.

【0005】処が、前述のように優れた成形品の大量生
産が可能な射出圧縮成形法であっても、DVD或いはハ
ードディスクのように、CDに比べて遙かに高い精度が
要求されるものに適用しようとすると、次のような問題
点が生じる。即ち、DVDは同じディスクでもCDと比
較すると、直径は120mmで同じであるが厚みは半分の
0.6mmであり、しかも格納情報量を多くするため2枚
のディスクを張り合わせて使用される。
However, even if it is an injection compression molding method capable of mass-producing excellent molded products as described above, it is required to have much higher precision than a CD, such as a DVD or a hard disk. However, the following problems arise. That is, even if a DVD is the same disc as a CD, the diameter is 120 mm and the same, but the thickness is half.
It is 0.6 mm, and two disks are stuck together to increase the amount of information stored.

【0006】そして、上側のディスクの情報をピックア
ップとなるレーザで読みとる場合は兎も角、張り合わさ
れた下側のディスクの情報を読みとる場合には、上側の
ディスクを透過させて下側のディスクの情報入力面で反
射させ、再度上側のディスクを通過させて読みとる事に
なるため、特に上側のディスクの平行度は従来にない高
精度、例えばミクロンメートルオーダ(10ミクロンメー
トル以下)の高精度が要求される。これに対してCDで
は張り合わされる事なく1枚で使用されるので、DVD
ディスク程の高い平行度は要求されない。また、ハード
ディスクの樹脂化(従来は、ガラス或いはアルミニウム
基板を使用)に至っては、5ミクロンメートル以下とい
う更にシビアな精度が要求されている。
When the information on the upper disc is read by a laser serving as a pickup, when reading the information on the lower disc which is attached, the upper disc is transmitted and the information on the lower disc is read. Since it is reflected on the information input surface and read again by passing through the upper disc, parallelism of the upper disc is required to have a high precision that has never been achieved, for example, high precision on the order of microns (10 microns or less). To be done. On the other hand, a CD is used as a single disc without being stuck together,
It does not require as high a parallelism as a disc. Further, even if the hard disk is made of resin (conventionally, a glass or aluminum substrate is used), a more severe accuracy of 5 μm or less is required.

【0007】従って、DVDのような高精度を必要とす
る製品の射出成形機としては、各パーツの精度を極限ま
で高めていく事は勿論、その組み立て精度、特に金型取
付盤(58a)(58b)の平行度に対して極限の精度が要求され
る。この事は膨大なコスト増を招くのみならず、なお再
現性、信頼性に付いて実現可能性の点で大きな問題を孕
んでいる。
Therefore, as an injection molding machine for products requiring high precision such as a DVD, it goes without saying that the precision of each part is raised to the utmost limit, and the assembling precision thereof, especially the die mounting board (58a) ( Extreme precision is required for the parallelism of 58b). This not only causes enormous cost increase, but also has a big problem in terms of feasibility in terms of reproducibility and reliability.

【0008】即ち、従来のCD製造用射出成形機では、
要求される平行度は10ミクロンメートルオーダ(15ミク
ロンメートル以下程度)で十分であったため、各パーツ
の加工精度に付いて十分注意して製作し、これを十分注
意して組み立て、最後に試験射出成形を行い、その射出
成形品(55)の平行度を測定し、予定精度内か否かを確認
していた。
That is, in the conventional injection molding machine for CD manufacturing,
The required parallelism was on the order of 10 μm (about 15 μm or less) .Therefore, carefully manufacture the parts, carefully assemble them, and assemble them carefully. Molding was performed, and the parallelism of the injection-molded product (55) was measured, and it was confirmed whether or not it was within the expected accuracy.

【0009】射出成形品(55)の平行度が予定精度外の場
合、直前の平行度測定結果を基準にしてタイバー(59)〜
(62)の固定金型取付盤(58a)側のネジ端部(59a)〜(62a)
に螺着されているナット(63a)〜(66a)の何れかを必要量
だけ回転させて各タイバー(59)〜(62)の型締時のタイバ
ー張力を個別に調整し、調整後、前記ナット(63a)〜(66
a)を注意深く締め込んで固定し、再度、試験射出成形を
行って射出成形品(55)の平行度の測定を行い、射出成形
品(55)の平行度が予定精度内か否かを測定するという作
業者の勘と熟練に頼る作業を繰り返して精度を徐々に追
い込んでいた。
If the parallelism of the injection-molded product (55) is out of the expected accuracy, the tie bar (59)-
(62) Fixed mold mounting board (58a) side screw end (59a) ~ (62a)
Rotate any of the nuts (63a) to (66a) screwed to the required amount to individually adjust the tie bar tension at the time of mold clamping of each tie bar (59) to (62). Nut (63a) ~ (66
Carefully tighten and fix a), and then perform test injection molding again to measure the parallelism of the injection molded product (55) and measure whether the parallelism of the injection molded product (55) is within the expected accuracy. The accuracy of the work was gradually driven by repeating the work of relying on the intuition and skill of the worker.

【0010】前記作業者の勘と熟練に頼るような調整作
業によって実現できるような平行度の精度は、せいぜい
従来のCD製造用射出成形機に要求されるような10ミク
ロンメートル台(15ミクロンメートル以下程度)の精度が
限界であり、10ミクロンメートル以下或いは5ミクロン
メートル以下が要求されるような精度を達成する事は不
可能であった。
The precision of parallelism that can be realized by the adjustment work that depends on the intuition and skill of the operator is at most 10 micron meters (15 micron meters) required for the conventional injection molding machine for CD manufacturing. However, it was impossible to achieve the accuracy required to be 10 μm or less or 5 μm or less.

【0011】なお、本発明との比較のため、型締時に4
本のタイバー(59)〜(62)に発生する張力を一度に調節す
るための、従来装置(B)に設置されている張力調整機構
(67)に付いて簡単に説明する。前記タイバー張力調整機
構(67)は図4,5に示す通りテールストック(56)側に設
置されている。前記タイバー張力調整機構(67)の一部で
ある、トグル機構(68)を作動させるための従動プーリ(6
9)の回転軸(70)は、テールストック(56)の中央部分に回
転自在に配設されており、前記回転軸(70)を回転可能に
支持する軸受(71)に同軸にてベアリングを介して大歯車
(72)が回転可能に配設されている。そして同大歯車(72)
は、中間歯車(73)を介してテールストック(56)に設置さ
れたタイバー張力調節用モータ(74)の駆動歯車(75)に噛
合している。
For the purpose of comparison with the present invention, 4
Tension adjusting mechanism installed in the conventional device (B) for adjusting the tension generated in the book tie bars (59) to (62) at once
I will briefly explain about (67). The tie bar tension adjusting mechanism (67) is installed on the tailstock (56) side as shown in FIGS. A driven pulley (6) for operating a toggle mechanism (68), which is a part of the tie bar tension adjusting mechanism (67).
The rotating shaft (70) of 9) is rotatably arranged in the central portion of the tailstock (56), and the bearing is coaxial with the bearing (71) that rotatably supports the rotating shaft (70). Large gear through
(72) is rotatably arranged. And the same gear (72)
Engages with the drive gear (75) of the tie bar tension adjusting motor (74) installed in the tailstock (56) via the intermediate gear (73).

【0012】一方、4本のタイバー(59)〜(62)のテール
ストック(56)側のネジ端部(59b)〜(62b)には張力調整ナ
ット(63b)〜(66b)が噛合しており、この張力調整ナット
(63b)〜(66b)が更に前記大歯車(72)に噛合していてタイ
バー張力調節用モータ(74)のを作動させることで大歯車
(72)に噛合している張力調整ナット(63b)〜(66b)を一斉
に回転させることで4本のタイバー(59)〜(62)の張力を
1度に調整するようになっている。
On the other hand, tension adjusting nuts (63b) to (66b) are engaged with the screw ends (59b) to (62b) of the four tie bars (59) to (62) on the tailstock (56) side. Cage, this tension adjustment nut
(63b) ~ (66b) is further meshed with the large gear (72) and by operating the tie bar tension adjusting motor (74), the large gear
By rotating the tension adjusting nuts (63b) to (66b) meshing with the (72) all at once, the tensions of the four tie bars (59) to (62) are adjusted once.

【0013】[0013]

【発明が解決しようとする課題】本発明の解決課題は、
装置構造をマイナチェンジするだけでミクロンメートル
オーダの精度で金型取付盤或いは成形品の平行度を達成
する事が出来る射出成形機並びにその調整方法を開発す
る事にある。
The problems to be solved by the present invention are as follows.
The objective is to develop an injection molding machine and its adjustment method that can achieve parallelism of a mold mounting board or molded products with an accuracy of the order of micron meters simply by changing the equipment structure.

【0014】[0014]

【課題を解決するための手段】「請求項1」に記載の射
出成形機(A)は「固定金型取付盤(2a)と、テールストッ
ク(5)と、前記固定金型取付盤(2a)とテールストック(5)
との間に架設されたタイバー(41)〜(44)と、タイバー(4
1)〜(44)に沿って往復移動する移動金型取付盤(2b)と、
テールストック(5)に固定され、移動金型取付盤(2b)を
往復移動させて固定金型取付盤(2a)に取り付けられた固
定金型(1a)と移動金型取付盤(2b)に取り付けられた移動
金型(1b)との型開閉並びに型締を行う型締機構(11)と、
前記タイバー(41)〜(44)に個別に取り付けられ、型締時
にタイバー(41)〜(44)に発生するタイバー張力を個別に
調節するためのタイバー張力調整機構部(6A)〜(6D)とを
有する射出成形機(A)であって、 タイバー張力調整機構
部(6A)〜(6D)は、 各タイバー(41)〜(44)のテールストッ
ク側端部に刻設された調整ネジ部(41b)〜(44b)にそれぞ
れ螺着され、前記テールストック(5)に回転自在に収納
されているタイバー張力調節歯車(45)〜(48)と、 タイバ
ー張力調節歯車(45)〜(48)に個別に噛合している駆動歯
車(6a1)〜(6d1)を有し、前記テールストック(5)に取り
付けられ、試験射出により得られた成形品に対する平行
度データに基づいて個別に平行度制御し、型締時に所期
の平行度を達成する各サーボモータモータ(6a)〜(6d)と
で構成されている」事を特徴とする。
[Means for Solving the Problems] The injection molding machine (A) according to claim 1 has a "fixed mold mounting plate (2a), a tailstock (5), and the fixed mold mounting plate (2a)". ) And tailstock (5)
And the tie bars (41) to (44) installed between
A moving mold mounting board (2b) that reciprocates along 1) to (44),
The fixed mold (1a) and the movable mold mounting plate (2b) fixed to the tailstock (5) and reciprocally moved on the movable mold mounting plate (2b) are mounted on the fixed mold mounting plate (2a). A mold clamping mechanism (11) for opening and closing the mold with the movable mold (1b) attached and for clamping.
Tie bar tension adjusting mechanism (6A) to (6D) individually attached to the tie bars (41) to (44) for individually adjusting the tie bar tensions generated in the tie bars (41) to (44) during mold clamping. An injection molding machine (A) having a tie bar tension adjusting mechanism.
Parts (6A) to (6D) are tail stocks for each tie bar (41) to (44).
Adjustment screws (41b) to (44b) engraved on the
It is screwed and stored freely in the tailstock (5).
A tie bar tension adjustment gear that is (45) - (48), tie bar
-Drive teeth individually meshing with the tension adjusting gears (45) to (48)
Cars (6a1) to (6d1) are installed in the tailstock (5).
Attached and parallel to the molded product obtained by test injection
Parallelism is controlled individually based on the degree data, and is expected during mold clamping.
Servo motors (6a) to (6d) that achieve parallelism of
It is composed of " .

【0015】このように、タイバー(41)〜(44)に個別に
配設されたサーボモータ(6a)〜(6d)にてタイバー(41)〜
(44)の型締時に発生する張力を調整するようになってい
るので、試験射出成形にて取り出した射出成形品(3)の
平行度を測定し、その測定結果に合わせて何れかのサー
ボモータ(6a)〜(6d)を必要量だけ作動させる事で射出成
形品(3)の平行度を予定精度に簡単に合わせ込んで行く
事が出来る。そしてこのように、タイバー張力調整機構
部(6A)〜(6D)の駆動源をサーボモータ(6a)〜(6d)とする
事で、平行度調節をデジタル的に行う事が出来、従来の
ように作業者の勘と経験に頼っていた調節と異なり、平
行度調節を極めて正確且つ短時間に行う事が出来る。
As described above, the tie bars (41 ) to (6d) are individually arranged by the servo motors (6a) to (6d) individually arranged on the tie bars (41) to (44).
Since the tension generated during mold clamping of (44) is adjusted, the parallelism of the injection-molded product (3) taken out by the test injection molding is measured, and one of the services is measured according to the measurement result.
It is possible to easily adjust the parallelism of the injection-molded product (3 ) to the desired accuracy by operating the required amounts of the Bomotors (6a)-(6d) . In this way, by setting the servomotors (6a) to (6d) as the drive sources of the tie bar tension adjusting mechanism (6A) to (6D), the parallelism can be digitally adjusted. Unlike the adjustment that relied on the intuition and experience of the operator, the parallelism can be adjusted extremely accurately and in a short time.

【0016】「請求項2」は、請求項1に記載の射出成
形機(A)における平行度調節方法であって、「射出成形
品(3)の平行度(H)を測定した時、射出成形品(3)の平行
度(H)が予定精度外である場合、前記平行度(H)の測定値
を基準にしていずれかのサーボモータ(6a)〜(6d)を作動
させて型締時にタイバー(41)〜(44)に発生するタイバー
張力(T41)(T42)(T43)(T44)を個別に調整し、最終的に射
出成形品(3)の平行度(H)が予定精度内に入るように調節
する」事を特徴とする。
" Claim 2 " is a method for adjusting the parallelism in the injection molding machine (A) according to claim 1 , wherein "when the parallelism (H) of the injection-molded product (3) is measured, the injection is performed. When the parallelism (H) of the molded product (3) is out of the expected accuracy, one of the servo motors (6a) to (6d) is operated based on the measured value of the parallelism (H) to clamp the mold. The tie bar tensions (T41) (T42) (T43) (T44) that sometimes occur on the tie bars (41) to (44) are adjusted individually, and finally the parallelism (H) of the injection molded product (3) is the expected accuracy. "Adjust to fit inside."

【0017】[0017]

【発明の実施の形態】本発明に掛かる射出圧縮成形機
(A)を図示実施形態に従って順次説明する。本発明装置
(A)の機台(22)上には、固定金型取付盤(2a)が固定され
ており、更にティルストック(5)側に向かって2本のガ
イドレール(14)が敷設されている。ティルストック(5)
は、直動軸受けのような直動機構(15a)を介して前記ガ
イドレール(14)上に移動可能に取り付けられている。そ
して、固定金型取付盤(2a)とティルストック(5)の間に
上下左右に4本のタイバー(41)〜(44)が架設されてい
る。前記タイバー(41)〜(44)には移動金型取付盤(2b)が
タイバー(41)〜(44)に沿ってスライドするように配設さ
れている。
BEST MODE FOR CARRYING OUT THE INVENTION An injection compression molding machine according to the present invention.
(A) will be sequentially described according to the illustrated embodiment. Device of the present invention
On the machine base (22) of (A), the fixed mold mounting board (2a) is fixed, and further two guide rails (14) are laid toward the till stock (5) side. . Tillstock (5)
Is movably mounted on the guide rail (14) through a linear motion mechanism (15a) such as a linear motion bearing. Then, four tie bars (41) to (44) are installed vertically and horizontally between the fixed mold mounting plate (2a) and the till stock (5). On the tie bars (41) to (44), a movable die mounting plate (2b) is arranged so as to slide along the tie bars (41) to (44).

【0018】前記移動金型取付盤(2b)は、成形品(3)を
金型キャビティ(7)から突き出すエジェクト機構(E)やゲ
ートカット機構(G)などの必要機構が搭載されている機
構部用ハウジング(12)と移動金型(1b)が搭載される移動
ダイプレート部(2b1)と、両者(12)(2b1)の間に設置・固
定されている圧力センサ(13)とで構成されている。
The movable mold mounting plate (2b) is a mechanism equipped with necessary mechanisms such as an eject mechanism (E) for ejecting the molded product (3) from the mold cavity (7) and a gate cut mechanism (G). Consists of a moving die plate part (2b1) on which the part housing (12) and moving mold (1b) are mounted, and a pressure sensor (13) installed / fixed between both parts (12) (2b1). Has been done.

【0019】そして、ティルストック(5)と機構部ハウ
ジング(12)との間には、移動金型取付盤(2b)全体を移動
金型(1b)と共に往復移動並びに型締を行う、例えばトグ
ル機構で構成される型締機構(11)が配設されている。前
記移動ダイプレート部(2b1)並びに機構部用ハウジング
(12)の下面には、走行レール(14)上を直線移動する直動
機構(15b)(15c)がそれぞれ設置されている。
Then, between the till stock (5) and the mechanism housing (12), the entire movable die mounting plate (2b) is reciprocated together with the movable die (1b) and clamped, for example, a toggle. A mold clamping mechanism (11) composed of a mechanism is provided. The moving die plate part (2b1) and the mechanism housing
Direct-acting mechanisms (15b) and (15c) that linearly move on the traveling rail (14) are installed on the lower surface of (12).

【0020】移動金型取付盤(2b)は、前記固定金型取付
盤(2a)に対して近接離間するようになっており、移動金
型取付盤(2b)並びに固定金型取付盤(2a)の対向面である
金型取付面(2ak)(2bk)は両金型(1a)(1b)の取付基準面と
なるため、その平面度は極めて精度良く仕上げられお
り、後述するようにその平行度が成形品(3)の平行度(H)
を左右するため高い平行度を実現するように組立調整さ
れている。
The movable die mounting board (2b) is arranged so as to be close to and away from the fixed die mounting board (2a), and the movable die mounting board (2b) and the fixed die mounting board (2a) The mold mounting surface (2ak) (2bk) that is the opposing surface of () is the mounting reference surface of both molds (1a) (1b), so its flatness is extremely accurately finished, and as described later, The parallelism is the parallelism (H) of the molded product (3)
Assembled and adjusted to achieve a high degree of parallelism.

【0021】次にタイバー(41)〜(44)の取り付けに付い
て説明する。タイバー(41)〜(44)は従来例で説明したよ
うに両端にネジ部がそれぞれ刻設されており、固定金型
取付盤(2a)側のネジ部を固定側ネジ部(41a)〜(44a)と
し、テールストック(5)側のネジ部を調整側ネジ部(41b)
〜(44b)とする。
Next, the attachment of the tie bars (41) to (44) will be described. As described in the conventional example, the tie bars (41) to (44) are provided with threaded portions on both ends, respectively, and the fixed die mounting board (2a) side threaded portion is fixed side screwed portion (41a) to ( 44a) and adjust the thread on the tailstock (5) side to the thread on the adjustment side (41b)
~ (44b).

【0022】固定金型取付盤(2a)側にあっては、タイバ
ー(41)〜(44)の固定金型取付盤(2a)側の端部が固定金型
取付盤(2a)の4隅の通孔(8)に挿通されており、その突
出端である固定側ネジ部(41a)〜(44a)に固定ナット(23)
〜(26)がそれぞれ螺着され、且つ固定側ネジ部(41a)〜
(44a)のそれぞれに設けた固定具(27)〜(30)にて固定側
ネジ部(41a)〜(44a)を固定する。固定方法は種々考えら
れるが、ここでは固定具(27)〜(30)に取り付けた複数の
固定ボルト(31)を締め込んで、固定具(27)〜(30)を固定
側ネジ部(41a)〜(44a)の端部に強く押圧し、これにより
固定ナット(23)〜(26)を強く固定金型取付盤(2a)に強く
押し付ける事で固定側ネジ部(41a)〜(44a)と固定ナット
(23)〜(26)のネジ同士を強く接触させて固定している。
これによりタイバー(41)〜(44)は固定金型取付盤(2a)と
一体化する。
On the fixed mold mounting board (2a) side, the end portions of the tie bars (41) to (44) on the fixed mold mounting board (2a) side are the four corners of the fixed mold mounting board (2a). Through the through hole (8) of the fixing nut (23) to the fixed side screw part (41a) ~ (44a)
~ (26) are respectively screwed, and fixed side screw part (41a) ~
The fixing side screw parts (41a) to (44a) are fixed by the fixing tools (27) to (30) provided on each of the (44a). Although various fixing methods can be considered, here, the plurality of fixing bolts (31) attached to the fixing members (27) to (30) are tightened to fix the fixing members (27) to (30) to the fixing side screw portion (41a). ) ~ (44a) is strongly pressed against the ends of the fixing nuts (23) ~ (26) against the fixed mold mounting plate (2a), and the fixed side screw parts (41a) ~ (44a). And fixing nut
The screws of (23) to (26) are firmly contacted and fixed.
As a result, the tie bars (41) to (44) are integrated with the fixed mold mounting board (2a).

【0023】テールストック(5)側にあっては、テール
ストック(5)側のタイバー(41)〜(44)の端部がテールス
トック(5)の4隅の通孔(9)に挿通され、その突出端であ
る調整側ネジ部(41b)〜(44b)にタイバー張力調節歯車(4
5)〜(48)がそれぞれ螺着されている。前記タイバー張力
調節歯車(45)〜(48)はテールストック(5)の前記通孔(9)
に同軸に設けられた収納凹部(10)内に回転自在に収納さ
れている。そして、その横にはタイバー(41)〜(44)毎に
サーボモータ(6a)〜(6d)が個別に設置されており、サー
ボモータ(6a)〜(6d)の駆動軸に取り付けられた駆動歯車
(6a1)〜(6d1)が前記タイバー張力調節歯車(45)〜(48)に
噛合している。更にサーボモータ(6a)〜(6d)には例えば
ロータリエンコーダのようなパルス発生装置(6a2)〜(6d
2)が設置されている。本実施例で、タイバー張力調整機
構部(6A)〜(6D)は、前記タイバー張力調節歯車(45)〜(4
8)、サーボモータ(6a)〜(6d)、駆動歯車(6a1)〜(6d1)並
びにパルス発生装置(6a2)〜(6d2)にて構成される。
On the tailstock (5) side, the ends of the tie bars (41) to (44) on the tailstock (5) side are inserted into the through holes (9) at the four corners of the tailstock (5). , The tie bar tension adjusting gear (4) on the adjusting side screw parts (41b) to (44b)
5) to (48) are screwed together. The tie bar tension adjusting gears (45) to (48) are the through holes (9) of the tailstock (5).
It is rotatably housed in a housing recess (10) provided coaxially with. Then, next to it, servo motors (6a) to (6d) are individually installed for each of the tie bars (41) to (44), and drive attached to the drive shafts of the servo motors (6a) to (6d). gear
(6a1) to (6d1) mesh with the tie bar tension adjusting gears (45) to (48). Further, the servo motors (6a) to (6d) have pulse generators (6a2) to (6d) such as rotary encoders.
2) is installed. In this embodiment, the tie bar tension adjusting mechanism (6A) ~ (6D), the tie bar tension adjusting gears (45) ~ (4.
8), servo motors (6a) to (6d), drive gears (6a1) to (6d1), and pulse generators (6a2) to (6d2).

【0024】次に型締機構(11)の駆動機構に付いて簡単
に説明する。型締機構(11)駆動用のサーボモータ(32)が
テールストック(5)の側面に設置されている。前記サー
ボモータ(32)の駆動プーリ(34)とテールストック(5)の
中心部分に回転自在に配設されている従動プーリ(33)と
はタイミングベルトのような伝達ベルト(35)にて接続さ
れている。
Next, the drive mechanism of the mold clamping mechanism (11) will be briefly described. A servomotor (32) for driving the mold clamping mechanism (11) is installed on the side surface of the tailstock (5). The drive pulley (34) of the servo motor (32) and the driven pulley (33) rotatably arranged at the center of the tailstock (5) are connected by a transmission belt (35) such as a timing belt. Has been done.

【0025】前記従動プーリ(33)の中心には駆動ナット
(37)が螺設されており、前記駆動ネジ(36)が進退可能に
螺入されている。前記駆動ネジ(36)の先端は型締機構(1
1)のトグルヘッド(38)に取り付けられており、駆動ネジ
(36)の進退に合わせて型締機構(11)のトグルアームが屈
伸する。
At the center of the driven pulley (33) is a drive nut.
(37) is screwed, and the drive screw (36) is screwed so that it can move forward and backward. The tip of the drive screw (36) is attached to the mold clamping mechanism (1
It is attached to the toggle head (38) of 1) and the drive screw
The toggle arm of the mold clamping mechanism (11) bends and stretches as the (36) moves back and forth.

【0026】次に本装置(A)、特に両金型取付盤(2a)(2
b)の要求される平行度を出すための調整を中心に説明す
る。機台(22)の上面である搭載面(22a)は、極めて高い
平面度に加工されており、固定側金型取付盤(2a)並びに
平行に配設された一対の走行レール(14)を固定する。続
いて走行レール(14)上にテールストック(5)、移動金型
取付盤(2b)、型締機構(11)等を設置し、タイバー(6)そ
の他の機構を夫々所定の手順で組み上げていく。ここで
重要なことは、僅かな最後の調整だけで要求される精度
が確保できるように固定側金型取付盤(2a)の下面(2a1)
と固定金型取付面(2ak)との直角度を始め、加工から組
み立てまで出来るだけ厳格に仕上げておく事である。
Next, this apparatus (A), especially both mold mounting boards (2a) (2
An explanation will be given focusing on the adjustment for obtaining the required parallelism of b). The mounting surface (22a), which is the upper surface of the machine base (22), is processed to have extremely high flatness, and includes the fixed-side mold mounting board (2a) and a pair of traveling rails (14) arranged in parallel. Fix it. Next, install the tailstock (5), moving mold mounting board (2b), mold clamping mechanism (11), etc. on the running rail (14), and assemble the tie bar (6) and other mechanisms in the prescribed procedure. Go. What is important here is that the bottom surface (2a1) of the fixed side mold mounting plate (2a) is secured so that the required accuracy can be secured with only a slight final adjustment.
It is necessary to finish as strictly as possible from processing to assembly, including the squareness between the fixed mold mounting surface (2ak) and.

【0027】本装置(A)の組立が終了すると、本装置(A)
を使用しての射出成形作業に移ることになる。一般的に
は金型(1a)(1b)を新たに搭載する場合、または新旧金型
交換を行う場合、或いは日常頻繁に行われるスタンパ(7
a)交換を行った後などでは、自動連続射出成形工程に入
る前に試験的に射出成形を行い、成形品(3)を取り出し
てその平行度、板厚、密度その他が厳密にチェックさ
れ、完全に仕様を満足するようになるまで十分に調整が
行われ、然る後始めて自動射出成形工程に切り替わる事
になる。ここでは、成形品(3)に対する平行度調節を中
心に述べる。まず、試験射出成形を行い、これから取り
出された成形品(3)の平行度を測定して金型キャビティ
(7)の対向面の傾き(或いは、対向面間の誤差)を知る。
誤差の量が分かればどのタイバーにどの程度の張力を生
じさせれば、前記対向面が平行になり、誤差が解消され
るか計算する事が出来る。
When the assembly of this device (A) is completed, this device (A)
Will be moved to the injection molding work using. Generally, when a new die (1a) (1b) is installed, or when the old and new dies are replaced, or the stamper (7
a) After replacement, injection molding is performed on a trial basis before entering the automatic continuous injection molding process, and the molded product (3) is taken out and its parallelism, plate thickness, density, etc. are strictly checked, It will be adjusted enough to completely meet the specifications, and only then will the automatic injection molding process be switched to. Here, the adjustment of parallelism to the molded product (3) will be mainly described. First, test injection molding is performed, the parallelism of the molded product (3) taken out from this is measured, and the mold cavity is measured.
Know the inclination of the facing surface (or the error between the facing surfaces) in (7).
If the amount of error is known, it is possible to calculate how much tension should be applied to which tie bar so that the facing surfaces become parallel and the error is eliminated.

【0028】続いて、本装置(A)の制御部から各タイバ
ー張力調整機構部(6A)〜(6D)の各サーボモータ(6a)〜(6
d)に対して個別データを送り、各サーボモータ(6a)〜(6
d)を個別データに従って作動させる。各サーボモータ(6
a)〜(6d)の作動量は付属のパルス発生装置(6a2)〜(6d2)
にて確認されている。
Next, the servo motors (6a) to (6) of the tie bar tension adjusting mechanism units (6A) to (6D) are controlled by the control unit of the apparatus (A).
Individual data is sent to (d) and each servo motor (6a) to (6
Activate d) according to the individual data. Each servo motor (6
a) ~ (6d) actuation amount is the attached pulse generator (6a2) ~ (6d2)
Have been confirmed in.

【0029】各サーボモータ(6a)〜(6d)が指令通り作動
すると、各サーボモータ(6a)〜(6d)の駆動歯車(6a1)〜
(6d1)に個別に噛合しているタイバー張力調整ギア(45)
〜(48)がこれに対応して回転し、型締時にタイバー(41)
〜(44)に発生する張力(T41)〜(T44)を個別に微調整す
る。前記タイバー張力(T41)〜(T44)の調整は、一般的に
は型開時に行われる。理論的には1度の調整でほぼ所定
の平行度が得られるが、必要ならば複数回の試験射出成
形を行う。
When the servo motors (6a) to (6d) operate as instructed, the drive gears (6a1) to (6a1) to the servo motors (6a) to (6d)
Tie bar tension adjustment gear (45) individually meshing with (6d1)
~ (48) correspondingly rotates, and the tie bar (41) during mold clamping.
Finely adjust the tension (T41) to (T44) generated in (44) to (44) individually. The adjustment of the tie bar tensions (T41) to (T44) is generally performed when the mold is opened. Theoretically, almost one degree of parallelism can be obtained with one adjustment, but if necessary, multiple test injection moldings are performed.

【0030】成形品(3)の厚みに付いても同様の方法で
規定寸法精度内に収まるように調節される。即ち、成形
品(3)の全体の厚みが不足している場合はタイバー張力
調整機構部(6A)〜(6D)のサーボモータ(6a)〜(6d)を作動
させてタイバー張力(T41)〜(T44)を若干緩め、逆に成形
品(3)の全体の厚みが過大の場合は前記タイバー張力調
節歯車(45)〜(48)を締め込む。これにより成形品(3)の
厚みを規定寸法に合わせ込んでいく事が出来る。前記成
形品(3)の厚み調整と平行度調整とは同時に行う事も勿
論可能である。そして、平行度や厚みその他について予
定精度が得られた所で自動射出成形工程に切り替える。
これにより、作業者の熟練や勘に頼る調整でなく、デー
タに基づく調整であるから、これまで得る事で出来なか
ったような高平行度の成形品(3)を極めて簡単且再現性
よくしかも大量に生産する事が出来るようになった。
The thickness of the molded product (3) is adjusted by the same method so as to be within the specified dimensional accuracy. That is, when the thickness of the entire molded product (3) is insufficient, the tie bar tension (T41) is activated by operating the servo motors (6a) to (6d) of the tie bar tension adjusting mechanism (6A) to (6D). (T44) is loosened slightly, and conversely, when the thickness of the molded product (3) is too large, the tie bar tension adjusting gears (45) to (48) are tightened. This allows the thickness of the molded product (3) to be adjusted to the specified dimensions. Of course, the thickness adjustment and the parallelism adjustment of the molded product (3) can be simultaneously performed. Then, when the expected accuracy of the parallelism, the thickness, etc. is obtained, the process is switched to the automatic injection molding process.
As a result, the adjustment is based on the data, not the adjustment depending on the skill and intuition of the operator.Therefore, it is extremely easy and reproducible to produce a highly parallel molded product (3) that could not be obtained until now. It became possible to produce in large quantities.

【0031】次に、タイバー張力調整機構部(6A)〜(6D)
の特殊な使い方に付いて説明する。タイバー張力調整機
構部(6A)〜(6D)の本来の機能は、前述のようにタイバー
(41)〜(44)に発生する張力(T41)〜(T44)を個別に調整し
て最終製品である成形品(3)の平行度(H)が、従来にない
ような高精度のものとなるようにするものであるが、前
記平行度(H)を保ちながら圧縮成形をする事も可能であ
るし、前記圧縮成形において圧縮速度制御や圧力制御或
いは位置制御が可能となる。これを図6に従って説明す
る。
Next, the tie bar tension adjusting mechanism (6A) to (6D)
I will explain about the special usage of. The original function of the tie bar tension adjusting mechanism (6A) to (6D) is as described above.
The tension (T41) to (T44) generated in (41) to (44) is adjusted individually, and the parallelism (H) of the final product, the molded product (3), is as high as never before. However, compression molding can be performed while maintaining the parallelism (H), and compression speed control, pressure control, or position control can be performed in the compression molding. This will be described with reference to FIG.

【0032】成形品(3)の平行度(H)が予定されている精
度内に入るようにするには、どのサーボモータ(6a)〜(6
d)をどのように制御すればよいか、直前の試験射出成形
でデータとして入手出来ている。そこで、型締前にサー
ボモータ(6a)〜(6d)を作動させてタイバー張力調整ギア
(45)〜(48)を若干後退させておき、この状態で型締を行
う。タイバー張力調整ギア(45)〜(48)が後退している分
(t)だけ両金型(1a)(1b)は離間している(図6(1)参
照)。
In order to make the parallelism (H) of the molded product (3) within the predetermined accuracy, which servo motor (6a) to (6
How to control d) is available as data from the test injection molding just before. Therefore, before clamping the mold, operate the servo motors (6a) to (6d) to tighten the tie bar tension adjustment gear.
(45) to (48) are slightly retracted, and the mold is clamped in this state. The amount by which the tie bar tension adjustment gears (45) to (48) are retracted.
Both molds (1a) and (1b) are separated by (t) (see FIG. 6 (1)).

【0033】この状態で金型キャビティ(7)に計量樹脂
を射出する(同図(2)参照)。前記射出充填工程では、
前記離間距離(t)に相当する量の計量樹脂が、金型キャ
ビティ(7)内に多めに充填される。
In this state, the measuring resin is injected into the mold cavity (7) (see (2) in the figure). In the injection filling step,
The mold cavity (7) is overfilled with an amount of measuring resin corresponding to the distance (t).

【0034】そして、射出充填が完了すると、同図(3)
に示すようにゲートカットが行われ、ゲートカット完了
後、4つのサーボモータ(6a)〜(6d)を一斉に作動させて
タイバー張力調整ギア(45)〜(48)を所定位置まで前進さ
せて増締を行う。増締は従来のように型締機構(11)によ
って行われず、タイバー張力調整機構部(6A)〜(6D)を作
動させる事で行われる。そしてこの位置を保って充填樹
脂の保圧冷却を行う(同図(4))。続いて、同図(5)に示す
ように型開が行われ、最後に同図(6)に示すように製品
取り出しが行われる。
When the injection filling is completed, (3) in FIG.
Gate cut is performed as shown in, and after the gate cut is completed, the four servo motors (6a) to (6d) are operated simultaneously to move the tie bar tension adjusting gears (45) to (48) forward to a predetermined position. Tighten. The retightening is not performed by the mold clamping mechanism (11) as in the conventional case, but is performed by operating the tie bar tension adjusting mechanism sections (6A) to (6D). Then, while maintaining this position, the filled resin is cooled with holding pressure ((4) in the same figure). Subsequently, the mold opening is performed as shown in FIG. 5 (5), and finally the product is taken out as shown in FIG. 6 (6).

【0035】この時、増締速度を制御する事で成形品
(3)の品質(例えば、転写性の向上)を図る事が出来る
し(圧縮速度制御)、圧力センサ(13)からの圧力信号に
基づいて4つのサーボモータ(6a)〜(6d)を制御する事で
圧力制御を行う事も出来るし、移動金型(1b)の停止位置
に合わせて移動金型(1b)を停止させるように4つのサー
ボモータ(6a)〜(6d)を制御する事で位置制御を行う事も
出来、成形品(3)の厚み制御が可能となる。そして以上
の場合でも4つのサーボモータ(6a)〜(6d)による個々の
タイバー張力調整ギア(45)〜(48)の停止位置は前記試験
射出成形によって選られたデータに基づいて制御されて
いるので、平行度(H)や板厚その他の寸法は予定精度内
に保たれる事になる。
At this time, the molded product is controlled by controlling the tightening speed.
The quality of (3) (for example, improvement of transferability) can be achieved (compression speed control), and the four servo motors (6a) to (6d) are controlled based on the pressure signal from the pressure sensor (13). By doing so, it is possible to control the pressure, and to control the four servo motors (6a) to (6d) so as to stop the moving mold (1b) according to the stop position of the moving mold (1b). It is also possible to control the position with, and it is possible to control the thickness of the molded product (3). Even in the above case, the stop positions of the individual tie bar tension adjusting gears (45) to (48) by the four servo motors (6a) to (6d) are controlled based on the data selected by the test injection molding. Therefore, the parallelism (H), plate thickness and other dimensions will be kept within the expected accuracy.

【0036】[0036]

【発明の効果】本発明は、タイバーに個別に配設された
タイバー張力調整機構部にてタイバーの型締時に発生す
る張力を個別調整するようになっているので、試験射出
成形にて取り出した射出成形品の平行度の測定結果に合
わせて何れかのタイバー張力調整機構部を必要量だけ作
動させるだけで、射出成形品の平行度を予定精度に簡単
に合わせ込んで行く事が出来る。そして、タイバー張力
調整機構部の駆動源をサーボモータとする事で、平行度
調節を極めて正確且つ短時間に行う事が出来る。
According to the present invention, the tie bar tension adjusting mechanism section individually arranged on the tie bar individually adjusts the tension generated at the time of mold clamping of the tie bar. It is possible to easily adjust the parallelism of the injection-molded product to the intended accuracy simply by operating any one of the tie bar tension adjusting mechanisms according to the measurement result of the parallelism of the injection-molded product. By using a servo motor as the drive source of the tie bar tension adjusting mechanism, parallelism can be adjusted extremely accurately and in a short time.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明装置の金型機構部の図3に示すX−X線
断面図
FIG. 1 is a cross-sectional view taken along line XX shown in FIG. 3 of a mold mechanism portion of the device of the present invention.

【図2】本発明装置のテールストックの平断面図FIG. 2 is a plan sectional view of a tailstock of the device of the present invention.

【図3】本発明装置のテールストック側からの矢視図FIG. 3 is a view of the device of the present invention as seen from the side of the tailstock.

【図4】従来例の金型機構部の図5に示すY−Y線断面
FIG. 4 is a cross-sectional view taken along the line YY shown in FIG.

【図5】従来例のテールストック側からの矢視図FIG. 5 is an arrow view from the side of the tailstock of the conventional example.

【図6】射出成形における圧縮成形の工程手順図FIG. 6 is a process flow chart of compression molding in injection molding.

【符号の説明】[Explanation of symbols]

(A) 本装置 (1a) 固定金型 (1b) 移動金型 (2a) 固定金型取付盤 (2b) 移動金型取付盤 (3) 成形品 (41)(42)(43)(44) タイバー (5) テールストック (6A)(6B)(6C)(6D) タイバー張力調整機構部 (6a)(6b)(6c)(6d) サーボモータ (7) 金型キャビティ (A) This device (1a) Fixed mold (1b) Transfer mold (2a) Fixed mold mounting board (2b) Moving die mounting board (3) Molded product (41) (42) (43) (44) Tie bar (5) Tailstock (6A) (6B) (6C) (6D) Tie bar tension adjustment mechanism (6a) (6b) (6c) (6d) Servo motor (7) Mold cavity

───────────────────────────────────────────────────── フロントページの続き (72)発明者 原 好昭 東京都新宿区市谷田町1丁目4番地 株 式会社ソニー・ミュージックエンタテイ ンメント 内 (72)発明者 小林 真司 東京都新宿区市谷田町1丁目4番地 株 式会社ソニー・ミュージックエンタテイ ンメント 内 (56)参考文献 特開 平7−148805(JP,A) 特開 昭56−131059(JP,A) 特公 平1−42814(JP,B2) (58)調査した分野(Int.Cl.7,DB名) B29C 45/00 - 45/84 B29C 33/00 - 33/76 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshiaki Hara, 1-4 Yata-cho, Shinjuku-ku, Tokyo Inside Sony Music Entertainment Inc. (72) Shinji Kobayashi 1-chome, Yata-cho, Shinjuku-ku, Tokyo No. 4 Inside Sony Music Entertainment Inc. (56) References JP-A-7-148805 (JP, A) JP-A-56-131059 (JP, A) JP-B 1-42814 (JP, B2) (58) Fields investigated (Int.Cl. 7 , DB name) B29C 45/00-45/84 B29C 33/00-33/76

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 固定金型取付盤と、テールストック
と、前記固定金型取付盤とテールストックとの間に架設
されたタイバーと、タイバーに沿って往復移動する移動
金型取付盤と、テールストックに固定され、移動金型取
付盤を往復移動させて固定金型取付盤に取り付けられた
固定金型と移動金型取付盤に取り付けられた移動金型と
の型開閉並びに型締を行う型締機構と、前記タイバーに
個別に取り付けられ、型締時にタイバーに発生するタイ
バー張力を個別に調節するためのタイバー張力調整機構
部とを有する射出成形機において、 タイバー張力調整機構部は、 各タイバーのテールストック側端部に刻設された調整ネ
ジ部にそれぞれ螺着され、前記テールストックに回転自
在に収納されているタイバー張力調節歯車と、 タイバー張力調節歯車に個別に噛合している駆動歯車を
有し、前記テールストックに取り付けられ、試験射出に
より得られた成形品に対する平行度データに基づいて個
別に平行度制御し、型締時に所期の平行度を達成する各
サーボモータとで構成されている事を特徴とする 射出成
形機。
1. A fixed mold mounting plate, a tail stock, a tie bar installed between the fixed mold mounting plate and the tail stock, a movable mold mounting plate that reciprocates along the tie bar, and a tail. A mold that is fixed to the stock and reciprocates the moving mold mounting plate to open and close the mold between the fixed mold mounted on the fixed mold mounting plate and the moving mold mounted on the moving mold mounting plate, and to perform mold clamping. In an injection molding machine having a tightening mechanism and a tie bar tension adjusting mechanism section that is individually attached to the tie bar and individually adjusts the tie bar tension generated in the tie bar at the time of mold clamping , the tie bar tension adjusting mechanism section includes each tie bar tension adjusting mechanism section. The adjustment nut engraved on the tailstock end of the
The tailstock is screwed onto each of the
The tie bar tension adjusting gear currently stored and the drive gear individually meshing with the tie bar tension adjusting gear
Have, attached to the tailstock, for test injection
Based on the parallelism data for the molded product obtained from
Parallelism is controlled separately to achieve the desired parallelism during mold clamping.
An injection molding machine characterized by being configured with a servo motor .
【請求項2】 請求項1に記載の射出成形機におけ
る平行度調節方法であって、 平行度を測定した射出成形品の平行度が予定精度外であ
る場合、前記平行度の測定値を基準にしていずれかの
ーボモータを作動させて型締時にタイバーに発生するタ
イバー張力を個別に調節し、最終的に射出成形品の平行
度が予定精度内に入るように調節する事を特徴とする射
出成形機における平行度調節方法。
2. The parallelism adjusting method for an injection molding machine according to claim 1 , wherein the parallelism of the injection-molded product whose parallelism is measured is out of a predetermined accuracy, the measured value of the parallelism is used as a reference. in to one of the service
The parallelism in the injection molding machine is characterized by individually adjusting the tie bar tension generated in the tie bar during mold clamping by operating the servo motor , and finally adjusting the parallelism of the injection molded product so that it falls within the planned accuracy. Adjustment method.
JP2000026464A 2000-02-03 2000-02-03 Injection molding machine and its parallelism adjustment method Expired - Fee Related JP3527872B2 (en)

Priority Applications (1)

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