JPS5987894A - Multistage hot press - Google Patents
Multistage hot pressInfo
- Publication number
- JPS5987894A JPS5987894A JP57197487A JP19748782A JPS5987894A JP S5987894 A JPS5987894 A JP S5987894A JP 57197487 A JP57197487 A JP 57197487A JP 19748782 A JP19748782 A JP 19748782A JP S5987894 A JPS5987894 A JP S5987894A
- Authority
- JP
- Japan
- Prior art keywords
- hot
- hot plate
- press
- cylinder
- stage
- 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
Landscapes
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Press Drives And Press Lines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はコンピュータなど各種電子機器の多層プリント
配線板を接着する際に好適な多段ホットプレスに関する
もめである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a multi-stage hot press suitable for bonding multilayer printed wiring boards of various electronic devices such as computers.
従来の多層プリント配線板接着用として使用される多段
ホットプレスは、第１図および第２図に示す如く治具板
ｌに挾まれた被接着物の多層プリント配線板２を加圧及
び加熱する上熱板３．中間熱板４．下熱板５と、上熱板
３の熱をプレスフレーム６と断熱する断熱板７、下熱板
５の熱を加圧源となるラムシリンダー８のラム９上の下
ボルスタ１０と断熱する断熱板１１が主構成要素で、中
間熱板４と下熱板５をガイドするスラストガイド１２及
びプレスフレーム６に固定されたガイドレール１３、中
間熱版４の作業段取位置を決めるスラストガイド１２に
取伺けられたアーム１４、アーム１４を受けるプレスフ
−ムロに取付けられたストッパ１５よシ構成される。A multi-stage hot press used for conventional multilayer printed wiring board bonding presses and heats a multilayer printed wiring board 2 held between jig plates 1 as shown in FIGS. 1 and 2. Top hot plate 3. Intermediate hot plate 4. A heat insulating plate 7 that insulates the heat of the lower hot plate 5 and the upper hot plate 3 from the press frame 6, and a heat insulating plate 7 that insulates the heat of the lower hot plate 5 from the lower bolster 10 on the ram 9 of the ram cylinder 8 which is the pressure source. The plate 11 is the main component, and includes a thrust guide 12 that guides the intermediate hot plate 4 and the lower hot plate 5, a guide rail 13 fixed to the press frame 6, and a thrust guide 12 that determines the work setup position of the intermediate hot plate 4. It is composed of the arm 14 that has been taken out, and a stopper 15 that is attached to the press frame roller that receives the arm 14.
次に上記プレスの門す作についで説明すると、まずラム
１０を最下部に降下させ、中間熱板４をストツパ１５上
に載せた第１図の状態の時、多層プリント配線板２を治
具板１間に挾み、各々の熱板間に挿入し、ラムシリンダ
ー８に圧油を送シラム９を上昇させ、中間熱板４を介し
、上下熱板３゜５間で加圧および加熱し、多層プリント
配線板を形成するものである。Next, to explain the opening operation of the press, first, when the ram 10 is lowered to the lowest position and the intermediate heating plate 4 is placed on the stopper 15 as shown in FIG. It is sandwiched between plates 1, inserted between each hot plate, sends pressure oil to the ram cylinder 8, raises the ram 9, pressurizes and heats it between the upper and lower hot plates 3°5 through the intermediate hot plate 4. , to form a multilayer printed wiring board.
プリント配線基板を複数枚重ねて多Ｗ４接着するプレス
の生命は、均一な温度および圧力分布を維持することで
、これが寸法変化のばらつきの小さい多層プリント配線
板を作成することになる。The life of the press that stacks multiple printed wiring boards and adheres them with multiple W4 layers is to maintain uniform temperature and pressure distribution, which creates a multilayer printed wiring board with little variation in dimensional changes.
均一な温度及び圧力分布を得るためには加圧部の機械的
な平行度を向上させ均一に加圧する必袂がある。しかし
治具板１の熱サイクルによる反り、接着基板の１１さ分
布のはらつき、プリント基板の挿入位Ｍ（ラム中心との
ずれ）、フレームの歪等の影響で均一加圧することは困
難である。In order to obtain uniform temperature and pressure distribution, it is necessary to improve the mechanical parallelism of the pressurizing section and apply pressure uniformly. However, it is difficult to apply uniform pressure due to the effects of warping of the jig plate 1 due to thermal cycles, fluctuations in the 11-degree distribution of the adhesive substrate, insertion position M of the printed circuit board (misalignment with the center of the ram), distortion of the frame, etc. .
そこで接着用多段ホットプレスには第２図に示すような
中間熱板４にスライドガイド機Ｍｋ付加している。この
機構は熱板の熱膨張率の等方性を利用したもので、スラ
イド角θ’ｔ（１）式のようにスライドガイドの取付く
位置で決め、熱板が温度変化してもスライド
θ＝ｔａｎ−’ Ｌｈ／Ｌ４ −・・・（１）部
のすき間δは変らないようにしている。さらに熱板間の
傾きαを規制するには第３図よシ明らかなようにガイド
面のすきまδを小さく、ガイド間隔りに対しガイドｒｌ
Ｊ ＩＩを太きくしなけれはならない。しかしながらガ
イド部のすき間δを小さく、ガイド巾Ｈを大きくするに
は機械的な限界があり、熱板間の平行＃を０．０５ ／
５００ ｍｍ以下に規制することが困難である。Therefore, in the multi-stage hot press for bonding, a slide guide machine Mk is added to the intermediate hot plate 4 as shown in FIG. This mechanism utilizes the isotropy of the coefficient of thermal expansion of the hot plate, and the slide angle θ't (1) is determined by the position where the slide guide is installed, so that even if the temperature of the hot plate changes, the slide angle θ't =tan-'Lh/L4-...The gap δ in the section (1) is kept unchanged. Furthermore, in order to regulate the inclination α between the hot plates, as shown in Fig. 3, the gap δ between the guide surfaces is made small, and the guide rl
J II must be made thicker. However, there are mechanical limits to reducing the guide gap δ and increasing the guide width H, so the parallel # between the hot plates should be set to 0.05/
It is difficult to regulate the thickness to 500 mm or less.
本発明は上記の点に鑑み、多層プリント配線板が挿入さ
れる熱板間の平行度を常時接着中に修正できるようにし
たことを目的とする。In view of the above points, an object of the present invention is to enable the parallelism between hot plates into which multilayer printed wiring boards are inserted to be constantly corrected during bonding.
１組の熱板間で複数個所のすき間を検出し、１組の熱板
のりし下側の可動熱板のすき間検出器近傍に取付けられ
た熱板姿勢制御用シリンダーで熱板の平行度を修正する
。この修正Ｍ、ｔユすき間検出器で検出した値を制御部
へ取込み、平行度の演算により平行匿修正量をもとめ、
次にその修正量を圧力変換し、熱板の姿勢制御用シリン
ダーの圧力制御弁へ指令値を出し、圧力差で熱板の姿勢
を制御するものである、
また、制御装置内にはすきま修正量と圧力値の関係を記
憶させておき、この時なんらかの不具合（例えば熱板間
内へ異物を噛み込む）が生じて修正不可なるときは、オ
ペレータに番報する機能をももたせる。Gaps at multiple locations between a set of hot plates are detected, and the parallelism of the hot plates is determined using a cylinder for controlling the position of the hot plate installed near the gap detector of the movable hot plate at the bottom of the set of hot plates. Fix it. The values detected by the correction M and t gap detectors are taken into the control unit, and the parallelism correction amount is obtained by calculating the parallelism.
Next, the amount of correction is converted into pressure, and a command value is sent to the pressure control valve of the cylinder for controlling the position of the hot plate, and the position of the hot plate is controlled by the pressure difference.In addition, there is a gap correction device in the control device. The relationship between the amount and the pressure value is memorized, and if a problem occurs (for example, a foreign object gets stuck between the hot plates) and cannot be corrected, it also has the function of notifying the operator.
以下、本発明プレスの実施例を第４〜６図により説明す
る。ＷＪ４図〜第６図において、第１図と同一符号のも
のは同一部分を示す。本発明の接着用多段プレスはプレ
ス本体部１６と加熱装置部１７と油圧装置１８及び制御
部１９などから構成されている。Embodiments of the press of the present invention will be described below with reference to FIGS. 4 to 6. In FIGS. WJ4 to FIG. 6, the same reference numerals as in FIG. 1 indicate the same parts. The multi-stage bonding press of the present invention includes a press body section 16, a heating device section 17, a hydraulic device 18, a control section 19, and the like.
プレス本体部１６は被接着物を加圧及び加熱する上熱板
２０、中間熱板２１、下熱板２２と、上熱板の熱をプレ
スフレーム２５と断熱する断熱板２３、下熱板２２の熱
を下ボルスタ−２６と断熱する断熱板２４、中間熱板２
１と下熱板２２をガイドする、スラストガイド２７、プ
レスフレーム２５に固定されたガイドレール２８、よシ
なシ、各々の熱板間には変位検出器２９、中間熱板には
３個所に座板３０が取付けられ、熱板姿勢制御シリンダ
ー３１のシリンダーロット３２と結合されている。The press main body 16 includes an upper heating plate 20, an intermediate heating plate 21, and a lower heating plate 22 that press and heat the object to be adhered, and a heat insulating plate 23 and a lower heating plate 22 that insulate the heat of the upper heating plate from the press frame 25. A heat insulating plate 24 that insulates the heat from the lower bolster 26 and an intermediate heating plate 2
A thrust guide 27 that guides the lower heating plate 22, a guide rail 28 fixed to the press frame 25, a displacement detector 29 between each heating plate, and three places on the intermediate heating plate. A seat plate 30 is attached and connected to a cylinder rod 32 of a hot plate attitude control cylinder 31.
加熱装置部１７は、加熱及び冷却用の複数の制御弁及び
制御器より構成され熱板に接続されている。油圧装置１
８も同様に加圧力制御、切換、速度制御等の弁、配管及
び油圧ポンプ３３等より ＃ｔ’１成され、下ホルスタ
−２６を操作するラムシリンダー８、及び圧力制御弁３
５を介して熱板姿勢制御シリンダー３１に接続されてい
る。The heating device section 17 includes a plurality of control valves and controllers for heating and cooling, and is connected to a hot plate. Hydraulic system 1
Similarly, #t'1 is made up of valves, piping, hydraulic pump 33, etc. for pressure control, switching, speed control, etc., and includes a ram cylinder 8 that operates the lower holster 26, and a pressure control valve 3.
5 to the hot plate attitude control cylinder 31.
制御部１９は本装置を操作する操作盤３６内に、変位検
出器２９の信号、制御器のデータ、演算結果を油圧装置
の圧力制御弁３５へ電送する圧力信号等の受授をするイ
ンターフェース部３７、濱ｑ。The control unit 19 has an interface unit in the operation panel 36 for operating this device that receives and receives signals from the displacement detector 29, data from the controller, pressure signals for electrically transmitting calculation results to the pressure control valve 35 of the hydraulic system. 37, Hamaq.
装置部３８、記憶装置部３９、これらを制御する制御装
置部４０よシ構成された制御器４１ｔ−内蔵している。A controller 41t comprising a device section 38, a storage device section 39, and a control device section 40 for controlling these is built-in.
次に本発明プレスの動作を説明する。多段プレスの始動
に先立ちまず、油圧装置の電動油ポンプ３３′ｆ、駆動
、加熱条件に応じて熱板を始動状態に設定し、同様に制
御盤３６も運転準備条件を成立させる。各々の装置の始
動条件が成立した時点で、各熱板間に被接着用基板を挿
入し、運転開始となる。Next, the operation of the press of the present invention will be explained. Prior to starting the multi-stage press, first, the hot plate is set to the starting state according to the electric oil pump 33'f of the hydraulic system, driving, and heating conditions, and the control panel 36 is also set to the operation preparation condition. When the starting conditions for each device are met, a substrate to be bonded is inserted between each hot plate, and operation is started.
運転開始と同時に電動油ポンプ３３からの圧油がラムシ
リンダー８に供給されラム９が上昇開始し、被接着用基
板２が熱板により加圧及び加熱される。この時下熱板２
２、中間熱板２１はスライドガイド２７と、プレスフレ
ーム２５に固定されたガイドレール２８で案内される。Simultaneously with the start of operation, pressure oil from the electric oil pump 33 is supplied to the ram cylinder 8, the ram 9 starts to rise, and the substrate 2 to be bonded is pressurized and heated by the hot plate. At this time, the lower heating plate 2
2. The intermediate hot plate 21 is guided by a slide guide 27 and a guide rail 28 fixed to the press frame 25.
ラムシリンダー８のラム９による加圧終了後、熱板間の
変位は変位検出器２９で、各々の熱板間の変位量を検出
し、制御器４１のインターフェース部３７より演算装置
部３８へ取込む。After the pressurization by the ram 9 of the ram cylinder 8 is completed, the displacement between the hot plates is detected by the displacement detector 29, and the amount of displacement between the hot plates is detected by the interface unit 37 of the controller 41 and sent to the arithmetic unit 38. It's crowded.
Ｌ１’ｘ ＝ （ｊｔｔ＋ｔｔｚ ＋／Ｌｔｓ ）／３
・川・・（２）４１１１ｇ”δ■
・・・・・・（３）１１２ＡＨ；＝δ！、
・・・・・・（４）４ｓ １１＊＝δ１３
・・・・・・（５）ここで、
ｔ１１〜１３ ：１段目の変位置
ｔ、；：１段目の平均変位
δ１！〜δ１３ ：１段目の１−・測定点の修正量演
算装置３８にて熱板間１σに（２）へ・（５）（他の段
についても同様）式の演ｎ、’＠：実施し、あらかじめ
第７図のような、変位修正量δと姿勢制御シリンダーの
圧力の関係式を記憶装置部３９に記憶させておき、演算
結果のδとこの関係式のデータよシ、変位測定位置近傍
の姿勢制御シリンダーの修正圧力を求め、油圧装置１８
の各々の熱する姿勢制御シリンダー３１の圧力制御弁３
５Ｖｒ−指示し、熱板姿勢制御シリンダー３１により熱
板間の平行波を修正するものである。L1'x = (jtt+ttz +/Lts)/3
・River...(2) 4111g"δ■
・・・・・・(3)112AH;=δ! ,
・・・・・・(4) 4s 11*=δ13
......(5) Here, t11-13: Displacement position t of the first stage, ;: Average displacement δ1 of the first stage! ~ δ13: 1- of the 1st stage - The correction amount calculation unit 38 of the measurement point calculates the distance between the hot plates 1σ to (2). (5) (same for other stages). However, a relational expression between the displacement correction amount δ and the pressure of the attitude control cylinder, as shown in FIG. The correction pressure of the nearby attitude control cylinder is determined and the hydraulic system 18
The pressure control valve 3 of each heating attitude control cylinder 31
5Vr-instruction, and the parallel waves between the hot plates are corrected by the hot plate attitude control cylinder 31.
また熱板間に異物を噛込んだ場合、一般的にはラムシリ
ンダー８の出力が姿勢側（ａ１１シリンダー３１の出力
よシ大ｒｉに大きいため、熱板の姿勢修正は不可能であ
る。この状態の検出方法は熱板間の変位量がある値以上
となり、修正不可となったことを演界部で判断し：警報
信号を発生し、オペレータに知らせるようにしである。In addition, if a foreign object is caught between the hot plates, the output of the ram cylinder 8 is generally much larger than the output of the cylinder 31 on the attitude side (a11), so it is impossible to correct the attitude of the hot plates. The method of detecting the condition is to determine in the performance section that the amount of displacement between the hot plates has exceeded a certain value and correction is no longer possible: an alarm signal is generated to notify the operator.
本実施例によれば、積層基板を構成し、接着プレスに搬
入する治具の反シ、搬入位置等圧より熱板間の動的平行
度が変化するのを規制し、どのような搬入方法、治具の
状態、機械的なすきまの増大等によっても均一加圧し、
結果として均一加熱することができる。その結集積層基
板は均一な寸法収縮をし 信頼性の高い多層プリント配
約基板が完成する。すなわ呟接着された多層プリント配
線板の寸法変化のほらつきは従来のプレス形成されたも
のに比較して約５０％減少させる仁とができる。According to this embodiment, changes in the dynamic parallelism between the hot plates are regulated based on the uniform pressure of the loading position of the jig that constitutes the laminated substrate and is transported into the adhesive press, and the method of loading is controlled. , evenly pressurizes depending on the condition of the jig, increase in mechanical clearance, etc.
As a result, uniform heating can be achieved. The assembled laminated board undergoes uniform dimensional shrinkage, completing a highly reliable multilayer printed wiring board. In other words, the dimensional variation of the bonded multilayer printed wiring board can be reduced by about 50% compared to that of the conventional press-formed board.
本発明の多段ホットプレスによれば、被接着物の加圧、
加熱中における熱板間の動的平行度を高精度に維持する
こ七ができる。According to the multi-stage hot press of the present invention, pressurization of the adherend,
It is possible to maintain the dynamic parallelism between the hot plates with high precision during heating.
したがって、例えば多層プリント配線板など被接着物の
接着作東に大きな効果を発揮する。Therefore, it is highly effective in bonding objects to be bonded, such as multilayer printed wiring boards.
第１図は従来の多段ホットプレスの構造を示す正面図、
第２図は第１図のＩＩ −ＪＩ 臆断面図、第３図は熱
板ガイド部のすきまと傾きの関係を説明するための図、
第４図は本発明の多段ポットプレスの構造を示す正面図
、第５図は第４図の■−■断面図、第６図は本発明の多
段ポットプレスにおける油圧装置の系統図、第７図は本
発明の多段ホットプレスにおける熱板姿勢制御シリンダ
ーの圧力と変位修正量ａの値をグラフで示したものであ
る。
ｌ・・・治具板、２・・・被接着多層プリント配線板、
３・・・上熱板、４・・・中間熱板、５・・・下熱板、
７・・・断熱板、８・・・ラムシリンダー、９・・・ラ
ム、１１・・・断熱板、１６・・・プレス本体部、１７
・・・加熱装置部、１８・・・油圧装置、１９・・・制
御部、２０・・・上熱板、２１・・・中間熱板、２２・
・・下熱板、２３．２４・・・断熱板、２９・・・変位
検出器、３１・・・熱板姿勢制御シリンダー、３２・・
・シリンターロッド、３３・・・油圧ポンプ、３５・・
・圧力制御弁、３６・・・操作盤、３７・・・インター
フェース部、３８・・・演算装置部、３９・・・記憶装
置部、４ｏ・・・制御装置部、４１・・・制御器。
代理人 弁理士 薄田利幸゛１．．・
リ−２５）γ′
箭 １ 図
纂 ２ 図
２
￥Ｊ ３ 図
ｎ６図
藁 ７ 図
−〉−Figure 1 is a front view showing the structure of a conventional multi-stage hot press;
Fig. 2 is a cross-sectional view taken along II-JI of Fig. 1, Fig. 3 is a diagram for explaining the relationship between the gap and the inclination of the hot plate guide part,
FIG. 4 is a front view showing the structure of the multi-stage pot press of the present invention, FIG. 5 is a sectional view taken along the line ■-■ of FIG. 4, FIG. The figure is a graph showing the pressure and displacement correction amount a of the hot plate attitude control cylinder in the multi-stage hot press of the present invention. l...Jig board, 2...Glued multilayer printed wiring board,
3... Upper hot plate, 4... Intermediate hot plate, 5... Lower hot plate,
7... Heat insulation board, 8... Ram cylinder, 9... Ram, 11... Heat insulation board, 16... Press main body, 17
... Heating device section, 18... Hydraulic device, 19... Control section, 20... Top hot plate, 21... Intermediate hot plate, 22...
... Lower heating plate, 23.24 ... Heat insulation plate, 29 ... Displacement detector, 31 ... Hot plate attitude control cylinder, 32 ...
・Cylinder rod, 33...Hydraulic pump, 35...
- Pressure control valve, 36... Operation panel, 37... Interface section, 38... Arithmetic device section, 39... Storage device section, 4o... Control device section, 41... Controller. Agent Patent Attorney Toshiyuki Usuda 1. ．．・ Lee-25) γ' 箭 1 纂 2 fig. 2 ￥J 3 fig. n6 fig. 7 fig.-〉-
Claims (1)
多段ホットプレスにおいて、被接着物が挿入される複数
組の熱板間の変位を検出する複数個の変位検出器と、前
記熱板のうち、可動側の熱板に連結される熱板姿態制御
用シリンダーと、前記変位検出器からの検出信号によシ
前記熱板の平行度修正量および前記制御用シリンダーの
制御圧を演算する制御部とを備え、前記熱板の加圧、加
熱中における動的平行度を推持するようにしたことを特
徴とする多段ホットプレス。 ２、前記制御部は、前記動的平行度の修正が不可なると
きにＷ報指示する制御機能を備えたことを特徴とする特
許ｍＷ求の範囲第１項記載の多段系ットプレス。1.2 In a multi-stage hot press consisting of a cylinder, a pressurizing section, a heating section, etc., a plurality of displacement detectors detecting displacement between a plurality of sets of hot plates into which objects to be bonded are inserted; A cylinder for controlling the position of the hot plate connected to the movable side of the hot plate among the plates, and a detection signal from the displacement detector to calculate the parallelism correction amount of the hot plate and the control pressure of the control cylinder. A multi-stage hot press characterized in that the multi-stage hot press is equipped with a control section to maintain dynamic parallelism during pressurization and heating of the hot plate. 2. The multi-stage press set forth in item 1 of the Patent Application Claims, characterized in that the control section has a control function to issue a W warning instruction when the dynamic parallelism cannot be corrected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57197487A JPS5987894A (en) | 1982-11-12 | 1982-11-12 | Multistage hot press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57197487A JPS5987894A (en) | 1982-11-12 | 1982-11-12 | Multistage hot press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5987894A true JPS5987894A (en) | 1984-05-21 |
| JPH0440120B2 JPH0440120B2 (en) | 1992-07-01 |
Family
ID=16375283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57197487A Granted JPS5987894A (en) | 1982-11-12 | 1982-11-12 | Multistage hot press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5987894A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6356607U (en) * | 1986-10-01 | 1988-04-15 | ||
| JP2014226669A (en) * | 2013-05-17 | 2014-12-08 | トヨタ車体株式会社 | Multistage press apparatus |
| KR20170030428A (en) * | 2015-09-09 | 2017-03-17 | 토와 가부시기가이샤 | Press machine, press method, compression molding apparatus and compression molding method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010008018A1 (en) * | 2008-07-16 | 2010-01-21 | 株式会社太平製作所 | Horizontal multistage press |
| JP4397958B1 (en) * | 2008-08-12 | 2010-01-13 | 株式会社太平製作所 | Horizontal multi-stage press |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4114057Y1 (en) * | 1964-01-18 | 1966-06-30 | ||
| JPS5094579A (en) * | 1973-12-25 | 1975-07-28 |
-
1982
- 1982-11-12 JP JP57197487A patent/JPS5987894A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4114057Y1 (en) * | 1964-01-18 | 1966-06-30 | ||
| JPS5094579A (en) * | 1973-12-25 | 1975-07-28 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6356607U (en) * | 1986-10-01 | 1988-04-15 | ||
| JP2014226669A (en) * | 2013-05-17 | 2014-12-08 | トヨタ車体株式会社 | Multistage press apparatus |
| KR20170030428A (en) * | 2015-09-09 | 2017-03-17 | 토와 가부시기가이샤 | Press machine, press method, compression molding apparatus and compression molding method |
| CN106513518A (en) * | 2015-09-09 | 2017-03-22 | 东和株式会社 | Punching machine, punching method, compression molding apparatus and compression molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0440120B2 (en) | 1992-07-01 |
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