JPH0514811Y2 - - Google Patents
Info
- Publication number
- JPH0514811Y2 JPH0514811Y2 JP1986100288U JP10028886U JPH0514811Y2 JP H0514811 Y2 JPH0514811 Y2 JP H0514811Y2 JP 1986100288 U JP1986100288 U JP 1986100288U JP 10028886 U JP10028886 U JP 10028886U JP H0514811 Y2 JPH0514811 Y2 JP H0514811Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- mold
- opening
- chamber
- ram
- 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 - Lifetime
Links
- 238000004891 communication Methods 0.000 description 5
- RRLHMJHRFMHVNM-BQVXCWBNSA-N [(2s,3r,6r)-6-[5-[5-hydroxy-3-(4-hydroxyphenyl)-4-oxochromen-7-yl]oxypentoxy]-2-methyl-3,6-dihydro-2h-pyran-3-yl] acetate Chemical compound C1=C[C@@H](OC(C)=O)[C@H](C)O[C@H]1OCCCCCOC1=CC(O)=C2C(=O)C(C=3C=CC(O)=CC=3)=COC2=C1 RRLHMJHRFMHVNM-BQVXCWBNSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は合成樹脂成形機に用いられる油圧作
動の型開閉装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a hydraulically operated mold opening/closing device used in a synthetic resin molding machine.
金型の高速開閉を行うために、型締シリンダの
後端から型締ラム内にブースタラムを貫装した直
圧式型開閉装置は周知である。
A direct pressure type mold opening/closing device in which a booster ram is inserted from the rear end of a mold clamping cylinder into a mold clamping ram in order to open and close a mold at high speed is well known.
この種の型開閉装置では、特開昭60−38121号
公報に開示されているように、型締ラムの型閉じ
方向への移動に伴つて、型締シリンダ内が負圧と
ならないように、別に設けたタンクの圧油が型締
シリンダに補給できるようになつている。また型
閉じ後における型締ラムの加圧は、ブースタラム
から型締シリンダ内に流出させた油圧により行つ
ている。そのためタンク通路とブースタラム側の
流通孔を交互に開閉する弁体を備えた管状ピスト
ンが、ブースタラムの周囲に摺動自在に嵌合して
あり、この管状ピストンを圧油力とばねの弾発力
とにより前後に移動して、タンク通路と上記流通
孔の開閉を交互に行つている。 In this type of mold opening/closing device, as disclosed in Japanese Patent Application Laid-Open No. 60-38121, the pressure inside the mold clamping cylinder is prevented from becoming negative as the mold clamping ram moves in the mold closing direction. Pressure oil from a separate tank can be supplied to the mold clamping cylinder. Further, pressurization of the mold clamping ram after the mold is closed is performed by hydraulic pressure flowing from the booster ram into the mold clamping cylinder. Therefore, a tubular piston equipped with a valve body that alternately opens and closes the tank passage and the booster ram side circulation hole is slidably fitted around the booster ram. By moving back and forth, the tank passage and the above-mentioned communication hole are opened and closed alternately.
上記従来装置では、弁体の後退にばね部材を用
いているため、ばねのたわみ量によつて弾発力が
変化するので、弁体の開閉動作を正確に制御する
のが困難であつた。
In the conventional device described above, since a spring member is used to retract the valve body, the elastic force changes depending on the amount of deflection of the spring, making it difficult to accurately control the opening and closing operations of the valve body.
またばね部材が弁体の前面または後面に当接さ
れるため、全体のスペースの中にばね部材の収納
スペースが必要となり、それだけ型締シリンダの
全長が長くなる問題があつた。しかもばね部材は
管状ピストンと共にブースタラムに組付けたのち
に型締シリンダ内に組込み、その際に弾発力を付
与せねばならないなど組立作業に手数を要し、特
殊な治具をも必要とするなどの多くの問題点があ
つた。 Further, since the spring member is brought into contact with the front or rear surface of the valve body, a storage space for the spring member is required within the entire space, which causes the problem that the overall length of the mold clamping cylinder increases accordingly. Moreover, the spring member must be assembled with the tubular piston into the booster ram and then into the mold clamping cylinder, and at that time, elastic force must be applied, making the assembly process time-consuming and requiring special jigs. There were many problems such as:
この考案は上記従来の問題点を解決するために
考えられたものであつて、その目的とするところ
は、弁体の開閉作動を油圧により行い、これによ
りばね圧をもつて閉鎖を行う場合の欠点を排除し
た新たな型開閉装置を提供することにある。
This invention was devised in order to solve the above-mentioned conventional problems, and its purpose is to open and close the valve body using hydraulic pressure, and thereby close the valve body using spring pressure. An object of the present invention is to provide a new mold opening/closing device that eliminates drawbacks.
上記目的によるこの考案は、可動盤と共に進退
移動して金型を開閉する型締ラム内のシリンダ
に、ブースタラムを型締シリンダの後端から貫装
し、そのブースタラムの後部周囲に、型締シリン
ダの後室とタンク通路とを開閉する弁体を備えた
管状ピストンを軸方向に摺動自在に設け、該管状
ピストンの後端に開弁用油室を形成するととも
に、開弁時に上記管状ピストンにより閉鎖される
流通孔をブースタラムに設けてなる型開閉装置に
おいて、
上記ブースタラムの後部を小径に形成して、受
圧面積が上記開弁用油室よりも小さい段部による
閉弁用油室を弁体との間に設け、該閉弁用油室と
ブースタラム内とを連通する油孔を上記段部に近
接して穿設してなることを要旨とするものであ
る。 In this invention for the above purpose, a booster ram is installed from the rear end of the cylinder in the mold clamping ram that moves forward and backward with the movable platen to open and close the mold, and a mold clamping cylinder is installed around the rear of the booster ram. A tubular piston equipped with a valve body for opening and closing a rear chamber and a tank passage is provided to be slidable in the axial direction, and an oil chamber for opening the valve is formed at the rear end of the tubular piston. In a mold opening/closing device in which a booster ram is provided with a flow hole that is closed by a valve opening/closing device, the rear part of the booster ram is formed to have a small diameter, and a valve-closing oil chamber is formed by a stepped portion having a pressure-receiving area smaller than the valve-opening oil chamber. The main feature is that an oil hole is provided between the valve body and the valve closing oil chamber and the inside of the booster ram and is bored in the vicinity of the stepped portion.
上記構成では、型開状態において、ブースタラ
ムから型締ラムの内部のシリンダに供給した圧油
により高速型閉が行われ、同時に開弁用油室に供
給した圧油により、型締シリンダとタンク通路と
を開閉する弁体が開放されて、タンク通路から型
締シリンダの後室に圧油が供給され、型閉が生ず
る。
In the above configuration, when the mold is open, high-speed mold closing is performed by pressure oil supplied from the booster ram to the cylinder inside the mold clamping ram, and at the same time, pressure oil supplied to the valve opening oil chamber is used to close the mold between the mold clamping cylinder and the tank passage. The valve body that opens and closes the mold is opened, and pressurized oil is supplied from the tank passage to the rear chamber of the mold clamping cylinder, causing mold closing.
また型閉が完了すると、ブースタラム内の圧油
は、ブースタラムの後部と周囲と管状ピストンと
の間に設けた閉弁用油室に流入し、弁体を後退さ
せて型締シリンダの後室とタンク通路とを閉鎖す
ると同時に、該弁体により閉鎖されていた流通孔
が型締シリンダ内と連通し、ブースタラム内の圧
油は型締シリンダの後室に流入して、そこに強力
型締が生ずる。 When mold closing is completed, the pressure oil in the booster ram flows into the valve-closing oil chamber provided between the rear and surrounding areas of the booster ram and the tubular piston, causing the valve body to retreat and forming the rear chamber of the mold-clamping cylinder. At the same time as the tank passage is closed, the flow hole that had been closed by the valve body communicates with the inside of the mold clamping cylinder, and the pressure oil in the booster ram flows into the rear chamber of the mold clamping cylinder, where strong mold clamping is performed. arise.
型閉状態において、上記開弁用油室に圧油を供
給すると、上記閉弁用油室との受圧面積の差か
ら、管状ピストンと共に弁体が前進移動して開弁
すると同時に、上記流通孔が塞がれて圧油の流入
が停止される。 When pressurized oil is supplied to the valve opening oil chamber in the mold closed state, due to the difference in pressure receiving area with the valve closing oil chamber, the valve body moves forward together with the tubular piston to open the valve, and at the same time, the flow hole opens. is blocked and the flow of pressure oil is stopped.
かかる状態にてブースタラム内の圧力を除き、
型締シリンダの前室に圧油を供給すると、型締シ
リンダの後室の圧油をタンクに排出しつつ型締ラ
ムが後退して、そこに型開が生ずる。 In this state, remove the pressure inside the booster ram,
When pressure oil is supplied to the front chamber of the mold clamping cylinder, the mold clamping ram moves back while discharging the pressure oil in the rear chamber of the mold clamping cylinder to a tank, and the mold opens there.
図中１は型締シリンダ、２は型締シリンダ１と
一体の固定盤３に対設した他方の固定盤で、両固
定盤２，３はタイバー４により連結してある。
In the figure, 1 is a mold clamping cylinder, 2 is the other fixed platen opposite to a fixed platen 3 which is integrated with the mold clamping cylinder 1, and both fixed plates 2 and 3 are connected by a tie bar 4.
５は型締ラムで、上記タイバー４を案内として
進退移動する可動盤６を先端に備え、内部中央に
は後端に開口を有するシリンダ７が軸方向に設け
てある。 Reference numeral 5 denotes a mold clamping ram, which has a movable platen 6 at its tip that moves forward and backward using the tie bars 4 as a guide, and a cylinder 7 having an opening at its rear end is provided in the axial direction at the center of the interior.
８はブースタラムで、型締シリンダ１の後室１
ａに接続した弁室９の後端から上記シリンダ７に
貫装され、かつ後部周囲には、上記後室１ａと弁
室９を介して接続したタンク１０の通路１１とを
開閉する弁体１２を備えた管状ピストン１３が、
後端に開弁用油室１４を設けて軸方向に摺動自在
に嵌挿してある。 8 is a booster ram, which is located in the rear chamber 1 of the mold clamping cylinder 1.
A valve body 12 is inserted through the cylinder 7 from the rear end of the valve chamber 9 connected to the rear chamber 1a, and around the rear portion is a valve body 12 that opens and closes the passage 11 of the tank 10 connected to the rear chamber 1a via the valve chamber 9. The tubular piston 13 is equipped with
A valve-opening oil chamber 14 is provided at the rear end and is inserted into the valve opening so as to be slidable in the axial direction.
また管状ピストン１３が位置する部分のブース
タラム後部は、弁室後端８ａに固定した端部ま
で、段部を設けて他の部分よりも小径に形成さ
れ、その段部により上記開弁用油室１４よりも受
圧面積が小さい閉弁用油室１５が、弁体１２との
間に形成してある。 In addition, the rear part of the booster ram where the tubular piston 13 is located is formed with a stepped part to have a smaller diameter than other parts up to the end fixed to the rear end 8a of the valve chamber, and the stepped part forms the valve opening oil chamber. A valve-closing oil chamber 15 having a smaller pressure-receiving area than 14 is formed between the valve body 12 and the valve body 12 .
上記段部の近傍には、ブースタラム内と閉弁用
油室１５とを連通する油孔１６が穿設してあり、
また段部先方には弁体１２により開閉される流通
孔１７が穿設してある。 An oil hole 16 is bored in the vicinity of the step, which communicates the inside of the booster ram with the valve-closing oil chamber 15.
Further, a communication hole 17 that is opened and closed by a valve body 12 is provided at the forward end of the stepped portion.
なお図中１８はブースタラム８の支持部材、１
９は固定盤３と可動盤５とに取付けた分割金型で
ある。 In addition, 18 in the figure is a support member of the booster ram 8, 1
9 is a split mold attached to the fixed platen 3 and the movable platen 5.
次に動作について説明する。 Next, the operation will be explained.
高速型開
第３図に示す型閉状態において、まず開弁用油
室１４に圧油を供給すると、管状ピストン１３と
共に閉弁状態の弁体１２が前進移動して開弁し、
弁室９とタンク通路１１とが連通する。同時に上
記流通孔１７が弁体１２により閉鎖されて、ブー
スタラム８から弁室９への圧油の供給が停止され
る（第１図参照）。 High Speed Mold Opening In the mold closed state shown in FIG. 3, when pressure oil is first supplied to the valve opening oil chamber 14, the valve body 12 in the closed state moves forward together with the tubular piston 13 to open the valve.
The valve chamber 9 and the tank passage 11 communicate with each other. At the same time, the communication hole 17 is closed by the valve body 12, and the supply of pressure oil from the booster ram 8 to the valve chamber 9 is stopped (see FIG. 1).
かかる状態において、型締シリンダ１の前室１
ｂに圧油を供給すると、型締ラム５が可動盤６と
一緒に後退移動を開始し、また後退移動に伴つ
て、シリンダ７の圧油はブースタラム８から回路
中に流出し、また後室１ａの圧油は弁室９を経て
タンク通路１１に流出し、そこに高速型開が生ず
る。 In this state, the front chamber 1 of the mold clamping cylinder 1
When pressure oil is supplied to b, the mold clamping ram 5 starts to move backward together with the movable platen 6, and as the mold clamping ram 5 moves backward, the pressure oil in the cylinder 7 flows out from the booster ram 8 into the circuit, and also flows into the rear chamber. The pressure oil 1a flows out through the valve chamber 9 into the tank passage 11, where high-speed mold opening occurs.
高速型閉
第１図に示す型開状態において、ブースタラム
８からシリンダ７に圧油を供給すると、型締ラム
５が可動盤６と一緒に高速前進して金型１９が閉
じる。 High Speed Mold Closing In the mold open state shown in FIG. 1, when pressure oil is supplied from the booster ram 8 to the cylinder 7, the mold clamping ram 5 moves forward together with the movable platen 6 at high speed, and the mold 19 closes.
次に上記開弁用油室１４の油圧力を除くと、ブ
ースタラム８の圧油は油孔１６から上記閉弁用油
室１５に作用し、弁体１２は管状ピストン１３と
共に後退移動して弁室９を閉鎖し、後室１ａとタ
ンク通路１１とを遮断する。同時に上記流通孔１
７が開放され、ブースタラム内と弁室９とが連通
する。これによりブースタラム８から上記後室１
ａに圧油が供給され、その圧油により強力型締が
行われる。 Next, when the hydraulic pressure in the valve-opening oil chamber 14 is removed, the pressure oil in the booster ram 8 acts on the valve-closing oil chamber 15 through the oil hole 16, and the valve body 12 moves backward together with the tubular piston 13 to open the valve. The chamber 9 is closed, and the rear chamber 1a and the tank passage 11 are cut off. At the same time, the above communication hole 1
7 is opened, and the inside of the booster ram and the valve chamber 9 communicate with each other. As a result, from the booster ram 8 to the rear chamber 1
Pressure oil is supplied to a, and strong mold clamping is performed by the pressure oil.
この考案は上述のように、ブースタラムの後部
を小径に形成して、受圧面積がブースタラムの後
部周囲に設けた管状ピストンの後端の開弁用油室
よりも小さい段部による閉弁用油室を、上記管状
ピストンと一体の弁体との間に設け、その閉弁用
油室を油孔によりブースタラム内と連通させて、
上記弁体による型締シリンダ後室の閉鎖と、ブー
スタラムに設けた型締シリンダ後室への流通孔の
開閉とを、ブースタラム内の圧油をもつて行うこ
とができるように構成したことから、従来構造に
て不可欠とされる閉弁用のばね部材が不要とな
る。したがつてばね部材をもつて弁体を作動する
場合に困難とされていた正確な開閉動作の制御を
も容易に実施でき、またばね部材の収納スペース
も不要となるため、型締シリンダの全長も短くす
ることができるばかりか、ブースタラム及び弁体
の組付けも簡単にできる。さらにまた弁体の後退
により閉弁が行われるので、弁体の開閉にともな
い直ちに型締シリンダ後室とタンク通路の開閉が
生じ、その結果、型締時においては昇圧時間の短
縮という効果をも奏する。
As mentioned above, this idea is based on the fact that the rear part of the booster ram is formed with a small diameter, and the valve-closing oil chamber is formed by a stepped part that has a pressure-receiving area smaller than the valve-opening oil chamber at the rear end of the tubular piston provided around the rear of the booster ram. is provided between the tubular piston and the integral valve body, and its valve-closing oil chamber is communicated with the inside of the booster ram through an oil hole,
Since the closing of the rear chamber of the mold clamping cylinder by the valve body and the opening and closing of the communication hole to the rear chamber of the mold clamping cylinder provided in the booster ram can be performed using the pressure oil in the booster ram, There is no need for a spring member for closing the valve, which is essential in conventional structures. Therefore, it is possible to easily control the opening and closing operations accurately, which was difficult when operating the valve body with a spring member, and since there is no need for storage space for the spring member, the overall length of the mold clamping cylinder can be reduced. Not only can the length be shortened, but also the booster ram and valve body can be easily assembled. Furthermore, since the valve is closed by retracting the valve body, the rear chamber of the mold clamping cylinder and the tank passage immediately open and close as the valve body opens and closes, resulting in the effect of shortening the pressure increase time during mold clamping. play.
図面はこの考案に係る型開閉装置の１実施例を
示すもので、第１図は型開時の断面図、第２図は
第１図の−線断面図、第３図は型閉時の断面
図である。
１……型締シリンダ、６……可動盤、７……シ
リンダ、８……ブースタラム、９……弁室、１２
……弁体、１３……管状ピストン、１４……開弁
用油室、１５……閉弁用油室、１６……油孔、１
７……流通孔。
The drawings show one embodiment of the mold opening/closing device according to this invention. Fig. 1 is a sectional view when the mold is opened, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is a sectional view when the mold is closed. FIG. 1... Mold clamping cylinder, 6... Movable platen, 7... Cylinder, 8... Booster ram, 9... Valve chamber, 12
... Valve body, 13 ... Tubular piston, 14 ... Oil chamber for valve opening, 15 ... Oil chamber for valve closing, 16 ... Oil hole, 1
7...Flow hole.
Claims (1)
ラム内のシリンダに、ブースタラムを型締シリン
ダの後端から貫装し、そのブースタラムの後部周
囲に、型締シリンダの後室とタンク通路とを開閉
する弁体を備えた管状ピストンを軸方向に摺動自
在に設け、該管状ピストンの後端に開弁用油室を
形成するとともに、開弁時に上記管状ピストンに
より閉鎖される流通孔をブースタラムに設けてな
る型開閉装置において、 上記ブースタラムの後部を小径に形成して、受
圧面積が上記開弁用油室よりも小さい段部による
閉弁用油室を弁体との間に設け、該閉弁用油室と
ブースタラム内とを連通する油孔を上記段部に近
接して穿設してなることを特徴とする型開閉装
置。[Scope of Claim for Utility Model Registration] A booster ram is installed from the rear end of the cylinder in the mold clamping ram that moves forward and backward with the movable platen to open and close the mold, and a mold clamping member is installed around the rear of the booster ram. A tubular piston equipped with a valve body for opening and closing the rear chamber of the cylinder and the tank passage is provided to be slidable in the axial direction, and an oil chamber for opening the valve is formed at the rear end of the tubular piston. In a mold opening/closing device in which a booster ram is provided with a flow hole that is closed by a piston, the rear part of the booster ram is formed to have a small diameter, and a valve-closing oil chamber is formed by a stepped portion having a pressure-receiving area smaller than the valve-opening oil chamber. A mold opening/closing device characterized in that an oil hole is provided between the valve body and the valve closing oil chamber and the inside of the booster ram and is bored in the vicinity of the stepped portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986100288U JPH0514811Y2 (en) | 1986-06-30 | 1986-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986100288U JPH0514811Y2 (en) | 1986-06-30 | 1986-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS637504U JPS637504U (en) | 1988-01-19 |
| JPH0514811Y2 true JPH0514811Y2 (en) | 1993-04-20 |
Family
ID=30969969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986100288U Expired - Lifetime JPH0514811Y2 (en) | 1986-06-30 | 1986-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0514811Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04295101A (en) * | 1991-03-25 | 1992-10-20 | Ngk Insulators Ltd | Ceramic turbocharger rotor and processing method thereof |
| EP1112812A3 (en) | 1999-12-27 | 2003-10-15 | Nippei Toyama Corporation | Grinding spindle with dual tool mounting means |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416930U (en) * | 1977-07-07 | 1979-02-03 |
-
1986
- 1986-06-30 JP JP1986100288U patent/JPH0514811Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416930U (en) * | 1977-07-07 | 1979-02-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS637504U (en) | 1988-01-19 |
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