JPH0671653A - Mold clamping device for vertical molding machine - Google Patents
Mold clamping device for vertical molding machineInfo
- Publication number
- JPH0671653A JPH0671653A JP24880892A JP24880892A JPH0671653A JP H0671653 A JPH0671653 A JP H0671653A JP 24880892 A JP24880892 A JP 24880892A JP 24880892 A JP24880892 A JP 24880892A JP H0671653 A JPH0671653 A JP H0671653A
- Authority
- JP
- Japan
- Prior art keywords
- mold clamping
- vertical
- mold
- passage
- flow passage
- 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
- 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】この発明は、左右両側に型締シリ
ンダを備えた竪型成形機の型締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 a mold clamping device for a vertical molding machine having mold clamping cylinders on both left and right sides.
【０００２】[0002]
【従来の技術】左右両側に型締シリンダを備えた竪型成
形機では、両型締シリンダの側部上下に油圧管を接続
し、それぞれ別々の油圧路を経て制御を行っている。2. Description of the Related Art In a vertical molding machine having mold clamping cylinders on the left and right sides, hydraulic pipes are connected to the upper and lower sides of both mold clamping cylinders, and control is performed via separate hydraulic paths.
【０００３】[0003]
【発明が解決しようとする課題】このため型締シリンダ
が一つの場合に比べて配管が多くなり、また管体による
油圧路では流動抵抗が大きく、早送りシリンダによる高
速型開閉に応答して、型締シリンダ内の圧油の出入を行
うには限界があるため、型開閉速度に制限が生じてい
る。Therefore, the number of pipes is increased as compared with the case where there is only one mold clamping cylinder, and the flow resistance is large in the hydraulic path formed by the pipe body. Since there is a limit to the movement of pressure oil in and out of the tightening cylinder, the mold opening / closing speed is restricted.
【０００４】このような課題も、各型締シリンダにプレ
フィルバルブを取付けることにより解決できるが、油圧
回路を異にする２つの型締シリンダを同時に制御するこ
とは困難で、何れか一方が先に作動するため、型締初期
に扁荷重が発生して可動盤が撓み、金型に悪影響を及ぼ
す等の課題を有する。Such a problem can be solved by mounting a prefill valve on each mold clamping cylinder, but it is difficult to control two mold clamping cylinders having different hydraulic circuits at the same time, and either one is the first. Therefore, there is a problem that a flat load is generated in the initial stage of mold clamping, the movable plate is bent, and the mold is adversely affected.
【０００５】この発明は、そのような従来の竪型成形機
の課題を解決するものであって、その目的は、型締装置
を構成するフレームの一部を圧油の流通に利用するとと
もに、流通路が形成されたフレームに共通のプレフィル
バルブを取付けて、両型締シリンダにおける圧油の流出
入制御を同時に行い得る新たな型締装置を提供すること
にある。The present invention solves the problem of such a vertical molding machine of the related art, and its purpose is to utilize a part of a frame constituting a mold clamping device for circulation of pressure oil, and It is an object of the present invention to provide a new mold clamping device in which a common prefill valve is attached to a frame in which a flow passage is formed, and pressure oil inflow and outflow control in both mold clamping cylinders can be simultaneously performed.
【０００６】[0006]
【課題を解決するための手段】上記目的によるこの発明
の特徴は、上部を下部よりも前方へ突出して端部を垂直
な型締シリンダに形成した左右一対の縦フレームと、両
縦フレームの上部間に設けられて該縦フレームを門型に
一体化した前後部の横フレームと、後部の横フレームに
貫設した大径の流通路と、その流通路と両型締シリンダ
の上室外側に設けた大径の流通穴とを連通する流路を内
部に有し、流路両端の開口を流通路及び流通穴に当接し
て両縦フレームの上部外側に横設した連絡部材と、上記
横フレームの中央に流通路と接続して設けたプレフィル
バルブとからなることにある。The features of the present invention according to the above object are as follows: a pair of left and right vertical frames in which the upper portion projects forward from the lower portion and the end portions are formed in vertical mold clamping cylinders; and the upper portions of both vertical frames. The horizontal frames of the front and rear parts, which are provided between the front and rear frames, which integrate the vertical frame in a gate shape, the large-diameter flow passages penetrating the rear horizontal frame, the flow passages and the upper chamber outside of both mold clamping cylinders. A connecting member having a flow passage communicating with a large-diameter circulation hole provided therein, and having openings at both ends of the flow passage abutting the flow passage and the circulation hole and provided laterally outside the upper portions of both vertical frames; It consists of a prefill valve provided in the center of the frame and connected to the flow passage.
【０００７】[0007]
【作 用】上記構成では、門型フレームを構成する横フ
レームを利用して、型締シリンダの油圧路の形成と、プ
レフィルバルブの接続とを行ったので、両方の油圧シリ
ンダの制御を同時に行うことができ、また型締シリンダ
の上室とプレフィルバルブが大径の油圧路により連絡さ
れるので圧油の流動抵抗が小さく、高速型開閉に際する
応答性が管路による場合よりも向上する。[Operation] In the above configuration, since the hydraulic frame of the mold clamping cylinder is formed and the prefill valve is connected using the horizontal frame that constitutes the portal frame, both hydraulic cylinders can be controlled simultaneously. Moreover, since the upper chamber of the mold clamping cylinder and the prefill valve are connected by a large-diameter hydraulic path, the flow resistance of pressure oil is small, and the responsiveness during high-speed mold opening and closing is better than when using a pipeline. improves.
【０００８】[0008]
【実施例】図中１，１は鋳造による左右一対の縦フレー
ムで，上部２，２が下部３，３よりも前方へ突出した側
面形状が逆Ｌ状形のものからなり、また上部２，２の突
出端は垂直な型締シリンダ４，４に形成されている。こ
の一対の縦フレーム１，１は、上部２，２の間の前後部
に設けた鋳造の横フレーム５，６により所要幅の門型フ
レームに一体形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numerals 1 and 1 denote a pair of left and right vertical frames formed by casting. The upper side 2 and the upper side 2 have a reverse L-shaped side surface projecting forward from the lower side 3 and 3. The protruding end of 2 is formed on vertical mold clamping cylinders 4, 4. The pair of vertical frames 1 and 1 are integrally formed into a gate-shaped frame having a required width by means of cast horizontal frames 5 and 6 provided in front and rear portions between the upper portions 2 and 2.
【０００９】上記型締シリンダ４，４の上室外側には大
径の流通穴７が開設してあり、また後部の横フレーム６
の上部内には、フレーム外側に向けて大径の流通路８が
貫設してある。そしてその両方は上部２，２の外側に設
けた連絡部材９，９の内部の流路１０，１０により連通
し、大径の油圧路を形成している。A large diameter through hole 7 is formed outside the upper chamber of the mold clamping cylinders 4 and 4, and a horizontal frame 6 at the rear portion.
A large-diameter flow passage 8 extends through the upper part of the frame toward the outside of the frame. Both of them communicate with each other through the flow passages 10, 10 inside the connecting members 9, 9 provided outside the upper portions 2, 2 to form a large-diameter hydraulic passage.
【００１０】連絡部材９は鋳造による角形ブロックから
なり、その上部に大径の上記流路１０が、また下部に後
記する早送りシリンダの小径の油圧路１１が穿設してあ
り、流路両端の開口１０ａ，１０ｂを各流通穴７と流通
路８の開口に水密に当接して、上部２の外側に横に取付
けてある。The connecting member 9 is composed of a cast rectangular block, and the large-diameter flow passage 10 is formed in the upper part thereof, and the small-diameter hydraulic passage 11 of a rapid-feed cylinder, which will be described later, is formed in the lower part of the connecting member 9, and The openings 10a and 10b are watertightly brought into contact with the openings of the circulation holes 7 and the flow passages 8 and laterally attached to the outside of the upper portion 2.
【００１１】また横フレーム６の中央には、プレフィル
バルブ１２が上記流通路８に接続して取付けてある。こ
のプレフィルバルブ１２は補助タンク１３を備え、また
内部にはバネ部材１４により常時閉弁方向に弾圧された
弁体１５が、内部油路１６と外部油路１７とを穿設した
芯弁１８に摺動自在に嵌合して設けてある。At the center of the horizontal frame 6, a prefill valve 12 is connected to the flow passage 8 and attached. The prefill valve 12 is provided with an auxiliary tank 13, and a valve body 15 which is elastically pressed in a closing direction by a spring member 14 has a core valve 18 in which an internal oil passage 16 and an external oil passage 17 are bored. It is slidably fitted to and installed.
【００１２】上記縦フレーム１，１の下端は、鋳造の基
盤１９に所要本数のボルト（図は省略）をもちいて一体
に縫着してあり、これにより側面形状がＣ型のフレーム
となっている。また上部２，２に形成した縦孔から基盤
１９には、丸鋼材による支柱２０，２０が嵌挿され、そ
の支柱２０，２０の両端部をナット２１，２２により締
着して、門型フレームが型締力に耐えるようにしてあ
る。The lower ends of the vertical frames 1 and 1 are integrally sewn to a casting base 19 with a required number of bolts (not shown), thereby forming a frame having a C-shaped side surface. There is. Further, columns 20 and 20 made of a round steel material are fitted into the base plate 19 through the vertical holes formed in the upper portions 2 and 2, and both ends of the columns 20 and 20 are fastened with nuts 21 and 22 to form a portal frame. Is designed to withstand the mold clamping force.
【００１３】左右一対の上記型締シリンダ４，４の型締
ピストン２３，２３はシリンダ下端から突出し、その突
出端にわたり可動盤２４が水平に取付けてある。また可
動盤２４には上記連絡部材９，９の前部下側に垂直に取
付けて上記油圧路１１と連通した早送りシリンダ２５，
２５のピストン２６，２６が連結してある。The mold clamping pistons 23, 23 of the pair of left and right mold clamping cylinders 4, 4 project from the lower end of the cylinder, and a movable plate 24 is horizontally mounted over the projecting ends. Further, a fast-forward cylinder 25, which is vertically attached to the movable plate 24 below the front part of the connecting members 9, 9 and communicates with the hydraulic passage 11,
25 pistons 26, 26 are connected.
【００１４】２７は射出装置で駆動部両側にノズルタッ
チシリンダ２８，２８を並行に備え、駆動部と一体の射
出筒２９が型締シリンダ間に下向きに位置するように、
シリンダ下端より突出したノズルタッチピストン３０，
３０を、上記型締ピストン２３，２３の上端に連結し
て、型締装置に昇降自在に設けられている。Reference numeral 27 denotes an injection device, which is provided with nozzle touch cylinders 28, 28 in parallel on both sides of the drive unit, so that an injection cylinder 29 integral with the drive unit is positioned downward between the mold clamping cylinders.
Nozzle touch piston 30 protruding from the lower end of the cylinder,
30 is connected to the upper ends of the mold clamping pistons 23, 23, and is provided in the mold clamping device so as to be movable up and down.
【００１５】なお、３１，３２は上部２のフレーム２
ａ、２ｂ穿設した油圧路で、油圧路３１は上記連絡部材
９の油圧路１１と接続し、また油圧路３２は上記型締シ
リンダ４の下室に接続している。In addition, 31 and 32 are the frame 2 of the upper part 2.
In the hydraulic passages a and b, the hydraulic passage 31 is connected to the hydraulic passage 11 of the connecting member 9, and the hydraulic passage 32 is connected to the lower chamber of the mold clamping cylinder 4.
【００１６】上記構成の型締装置では、図３に示す型開
の状態において、油圧路３１，１１から両早送りシリン
ダ２５，２５に圧油が供給されると、ピストン２６が高
速で下方移動する。これにより可動盤２４が型締ピスト
ン２３，２３とともに降下して金型（図は省略）を閉じ
て行く。また型締ピストン２３，２３と一緒にノズルタ
ッチピストン３０，３０が射出装置２７を支持しつつ降
下して行く。In the mold clamping device having the above structure, when pressure oil is supplied from the hydraulic passages 31 and 11 to both the rapid feed cylinders 25 and 25 in the mold open state shown in FIG. 3, the piston 26 moves downward at a high speed. . As a result, the movable platen 24 descends together with the mold clamping pistons 23, 23 to close the mold (not shown). Further, the nozzle touch pistons 30, 30 descend together with the mold clamping pistons 23, 23 while supporting the injection device 27.
【００１７】この型閉じ過程において、型締シリンダ
４，４では下室の油が油圧路３２から排出され、また型
締側油室となる上室には、補助タンク１３の油が流通路
８，流路１０及び流通穴７を経て供給され、油の不足に
よる上室の負圧が防止される。In this mold closing process, the oil in the lower chamber of the mold clamping cylinders 4 and 4 is discharged from the hydraulic passage 32, and the oil in the auxiliary tank 13 flows into the upper chamber, which serves as the mold clamping side oil chamber. Is supplied through the flow path 10 and the flow hole 7, and the negative pressure in the upper chamber due to the lack of oil is prevented.
【００１８】型閉じ完了後にプレフィルバルブ１２に油
圧回路（図は省略）から圧油が供給されると、ばね部材
１４に抗して弁体１５が芯弁１８上を摺動し、内部油路
１６と外部油路１７とが連通して油圧回路からの圧油が
上記流通路８及び流路１０，流通穴７をへて上室に作用
する。これにより型締シリンダ４，４は強力型締の状態
となる。この後に上記ノズルタッチシリンダ２８，２８
の下室に圧油を供給すると、上記射出装置２７が降下し
て射出筒２９の先端のノズルが金型にノズルタッチす
る。When pressure oil is supplied to the prefill valve 12 from a hydraulic circuit (not shown) after completion of mold closing, the valve element 15 slides on the core valve 18 against the spring member 14, and the internal oil The passage 16 and the external oil passage 17 communicate with each other, and the pressure oil from the hydraulic circuit acts on the upper chamber through the flow passage 8, the flow passage 10 and the circulation hole 7. As a result, the mold clamping cylinders 4 and 4 are in a state of strong mold clamping. After this, the nozzle touch cylinders 28, 28
When pressure oil is supplied to the lower chamber, the injection device 27 descends and the nozzle at the tip of the injection cylinder 29 touches the mold.
【００１９】成形完了後に上室への圧油の供給を停止す
ると、ばね部材１４により弁体１５が戻さて閉弁する。
そして計量完了後に上記ノズルタッチシリンダ２８，２
８の上室に圧油を供給すると、射出装置２７が上昇して
射出筒２９の先端のノズルが金型から離れる。その状態
で上記型締シリンダ４，４の下室に圧油を油圧路３２か
ら供給すると、下室の断面積が狭いことから型締ピスト
ン２３，２３が高速で上昇する。When the supply of pressure oil to the upper chamber is stopped after the completion of molding, the valve member 15 is returned by the spring member 14 to close the valve.
After the measurement is completed, the nozzle touch cylinders 28, 2
When pressure oil is supplied to the upper chamber of No. 8, the injection device 27 rises and the nozzle at the tip of the injection cylinder 29 separates from the mold. When pressure oil is supplied from the hydraulic passage 32 to the lower chambers of the mold clamping cylinders 4, 4 in that state, the mold clamping pistons 23, 23 rise at high speed because the cross-sectional area of the lower chamber is narrow.
【００２０】これにより可動盤２４と一緒に早送りシリ
ンダ２５，２５のピストン２６も油圧路１１から圧油を
流出しながら上昇して高速型開となる。また型締ピスト
ン２３，２３とともにノズルタッチピストン３０，３０
も射出装置２７を支持しながら所定の位置まで上昇す
る。As a result, together with the movable platen 24, the pistons 26 of the rapid-feed cylinders 25, 25 ascend while the pressure oil flows out from the hydraulic passage 11 to open at high speed. Further, together with the mold clamping pistons 23, 23, the nozzle touch pistons 30, 30
Also rises to a predetermined position while supporting the injection device 27.
【００２１】この型開き過程において、型締シリンダ
４，４では上室の油が流路穴７，流路１０及び流通路８
を経て補助タンク１３に戻される。したがって上室の油
が高速型開時の抵抗となるようなことがない。In this mold opening process, in the mold clamping cylinders 4 and 4, the oil in the upper chamber is flow path hole 7, flow path 10 and flow path 8.
And then returned to the auxiliary tank 13. Therefore, the oil in the upper chamber does not become a resistance when the high speed mold is opened.
【００２２】[0022]
【発明の効果】この発明は上述のように型締装置を構成
してなることから下記効果を有する。・ 左右一対の型
締シリンダの上室と連絡する圧油の流通路を後部の横フ
レームに貫設し、この横フレームの中央に流通路と接続
してプレフィルバルブを設けたので、そのプレフィルバ
ルブにより左右一対の型締シリンダの油圧制御を同時に
行うことができる。このため型締初期においても型締力
が左右均等に可動盤に作用するので、扁荷重により可動
盤が撓むようなことがない。The present invention has the following effects because the mold clamping device is configured as described above. A pressure oil flow passage communicating with the upper chambers of the pair of left and right mold clamping cylinders is provided through the rear horizontal frame, and a prefill valve is provided at the center of this horizontal frame to connect with the flow passage. The fill valve can simultaneously control the hydraulic pressure of the pair of left and right mold clamping cylinders. Therefore, even in the initial stage of mold clamping, the mold clamping force acts on the movable plate evenly on the left and right sides, so that the movable plate is not bent by the flat load.
【００２３】・ 油圧路を管路により形成した場合より
も大径に形成することができるので流動抵抗が小さくな
り、高速型閉じにおける上室への油の供給も迅速に行い
得るので、上室に負圧が生ずることがない。Since the hydraulic passage can be formed to have a larger diameter than that formed by a pipe, flow resistance is reduced, and oil can be quickly supplied to the upper chamber during high-speed mold closing. Negative pressure does not occur in.
【００２４】・ 縦フレームの上側部に連絡部材を横設
して型締シリンダの上室の油圧路が形成したので、型締
装置の両側に配管を行う必要がなく、配管数を低減でき
る他、プレフィルバルブも１つで門型フレームの後部内
に位置するので、点検も容易となり、保守管理の上から
も頗る具合がよい。Since the connecting member is provided horizontally on the upper side of the vertical frame to form the hydraulic path of the upper chamber of the mold clamping cylinder, it is not necessary to provide piping on both sides of the mold clamping device, and the number of pipes can be reduced. Since only one prefill valve is located in the rear part of the portal frame, it is easy to inspect and it is easy to maintain.
【図１】この発明に係る竪型成形機の型締装置の要部縦
断側面図である。FIG. 1 is a vertical sectional side view of a main part of a mold clamping device of a vertical molding machine according to the present invention.
【図２】図１のＡ−Ａ線における平断面図である。FIG. 2 is a plan sectional view taken along the line AA of FIG.
【図３】一部を縦断して示す正面図である。FIG. 3 is a front view showing a part in a vertical section.
１ 縦フレーム ２ 上部 ３ 下部 ４ 型締シリンダ ５ 前部の横フレーム ６ 後部の横フレーム ７ 型締シリンダ上室外側の流通穴 ８ 後部の横フレームの流通路 ９ 流路 １０ 連絡部材 １２ プレフィルバルブ １３ 補助タンク １４ ばね部材 １５ 弁体 １６ 内部油路 １７ 外部油路 １８ 芯弁 １９ 基盤 ２３ 型締ピストン ２４ 可動盤 ２５ 早送りシリンダ ２６ ピストン ２７ 射出装置 1 Vertical Frame 2 Upper 3 Lower 4 Mold Clamping Cylinder 5 Front Horizontal Frame 6 Rear Horizontal Frame 7 Mold Clamping Cylinder Cylinder Upper Outer Chamber Flow Hole 8 Rear Horizontal Frame Flow Passage 9 Flow Path 10 Connecting Member 12 Prefill Valve 13 Auxiliary tank 14 Spring member 15 Valve body 16 Internal oil passage 17 External oil passage 18 Core valve 19 Base plate 23 Clamping piston 24 Movable plate 25 Rapid feed cylinder 26 Piston 27 Injection device
Claims (1)
垂直な型締シリンダに形成した左右一対の縦フレーム
と、両縦フレームの上部間に設けられて該縦フレームを
門型に一体化した前後部の横フレームと、後部の横フレ
ームに貫設した大径の流通路と、その流通路と両型締シ
リンダの上室外側に設けた大径の流通穴とを連通する流
路を内部に有し、流路両端の開口を流通路及び流通穴に
当接して両縦フレームの上部外側に横設した連絡部材
と、上記横フレームの中央に流通路と接続して設けたプ
レフィルバルブとからなることを特徴とする竪型成形機
の型締装置。1. A pair of left and right vertical frames each having an upper portion projecting more forward than a lower portion and an end portion formed in a vertical mold clamping cylinder, and the vertical frames provided between the upper portions of both vertical frames to be integrated into a gate shape. Of the front and rear horizontal frames, a large-diameter flow passage that extends through the rear horizontal frame, and a flow passage that connects the flow passage with a large-diameter flow hole provided outside the upper chamber of both mold clamping cylinders. And a connecting member that has openings inside both ends of the flow path that are in contact with the flow passage and the flow hole and that are provided laterally outside the upper portions of both vertical frames, and a pre-connection member that is connected to the flow passage at the center of the horizontal frame. A mold clamping device for a vertical molding machine, which comprises a fill valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4248808A JP2571499B2 (en) | 1992-08-25 | 1992-08-25 | Mold clamping device of vertical molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4248808A JP2571499B2 (en) | 1992-08-25 | 1992-08-25 | Mold clamping device of vertical molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0671653A true JPH0671653A (en) | 1994-03-15 |
| JP2571499B2 JP2571499B2 (en) | 1997-01-16 |
Family
ID=17183718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4248808A Expired - Fee Related JP2571499B2 (en) | 1992-08-25 | 1992-08-25 | Mold clamping device of vertical molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2571499B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160288385A1 (en) * | 2015-04-02 | 2016-10-06 | Tien Kang Co., Ltd. | Vertical injection molding machine |
-
1992
- 1992-08-25 JP JP4248808A patent/JP2571499B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160288385A1 (en) * | 2015-04-02 | 2016-10-06 | Tien Kang Co., Ltd. | Vertical injection molding machine |
| US9662815B2 (en) * | 2015-04-02 | 2017-05-30 | Tien Kang Co., Ltd. | Vertical injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2571499B2 (en) | 1997-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |