JPH02108557U - - Google Patents
Info
- Publication number
- JPH02108557U JPH02108557U JP1730289U JP1730289U JPH02108557U JP H02108557 U JPH02108557 U JP H02108557U JP 1730289 U JP1730289 U JP 1730289U JP 1730289 U JP1730289 U JP 1730289U JP H02108557 U JPH02108557 U JP H02108557U
- Authority
- JP
- Japan
- Prior art keywords
- mold clamping
- clamping cylinder
- mold
- hydraulic
- logic valve
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
第１図は、この考案の実施例を示す型締油圧回
路図、第２図および第３図は、ロジツクバルブの
構成を示す断面図、第４図は、型締シリンダの油
圧変化を示すオツシログラフである。
１……型締油圧回路、２……型締シリンダ、３
，４，５，６……流量絞り機能をもつロジツクバ
ルブ、７……ソレノイドバルブ、８……圧力セン
サ、９……油圧源、１０……油タンク、１２，１
３……流量絞り機能をもたないロジツクバルブ、
１４，１５……ソレノイドバルブ。
Fig. 1 is a mold clamping hydraulic circuit diagram showing an embodiment of this invention, Figs. 2 and 3 are sectional views showing the configuration of the logic valve, and Fig. 4 is an oscillograph showing changes in the hydraulic pressure of the mold clamping cylinder. be. 1...Mold clamping hydraulic circuit, 2...Mold clamping cylinder, 3
, 4, 5, 6...Logic valve with flow restriction function, 7...Solenoid valve, 8...Pressure sensor, 9...Hydraulic pressure source, 10...Oil tank, 12, 1
3...Logic valve without flow restriction function,
14, 15... Solenoid valve.
Claims (1)
トグル式型締装置の油圧回路において、 この型締シリンダのヘツド側に並設した流量絞
り機能を有するロジツクバルブであつて油圧源に
連通する２個と、油タンクに連通する２個の合計
４個と、同じくヘツド側に接合した異物挟圧検出
の圧力センサと、上記型締シリンダのロツド側に
並設した流量絞り機能を有しないロジツクバルブ
であつて油圧源に連通する１個と、油タンクに連
通する１個の合計２個とで構成し、 型締においては、型締シリンダのヘツド側の上
記ロジツクバルブ１個を開いて油圧を供給し、型
締シリンダのロツド側の上記ロジツクバルブの油
圧源に連通する１個を開いて差動回路を構成する
高速型締めと、この両ロジツクバルブを閉じ、型
締シリンダのヘツド側に並設した他のロジツクバ
ルブで油圧源に連通する１個を開き、型締シリン
ダのロツド側の油圧タンクに連通するロジツクバ
ルブを開く低速型締と、上記異物挟圧の圧力セン
サの作動で型締シリンダのヘツド側の上記ロジツ
クバルブを閉じて油圧源を遮断し、または型開き
するように構成したことを特徴とする型締油圧回
路。[Scope of Claim for Utility Model Registration] In the hydraulic circuit of a toggle type mold clamping device that clamps a mold by pressing the head side of a mold clamping cylinder, a logic valve having a flow rate restricting function is installed in parallel on the head side of the mold clamping cylinder. A total of four sensors, two connected to the hydraulic pressure source and two connected to the oil tank, a pressure sensor for detecting foreign object pinching also connected to the head side, and a flow rate sensor installed in parallel on the rod side of the mold clamping cylinder. Consists of a total of two logic valves, one that does not have a throttling function and communicates with the hydraulic source, and the other that communicates with the oil tank.For mold clamping, one logic valve is located on the head side of the mold clamping cylinder. One logic valve connected to the hydraulic pressure source on the rod side of the mold clamping cylinder is opened to connect the high-speed mold clamp that forms a differential circuit, and both logic valves are closed to supply hydraulic pressure to the head of the mold clamping cylinder. Another logic valve installed in parallel on the side opens one connected to the hydraulic pressure source, and the logic valve connected to the hydraulic tank on the rod side of the mold clamping cylinder is opened. Low-speed mold clamping and the operation of the pressure sensor for squeezing foreign matter mentioned above cause the mold to close. A mold clamping hydraulic circuit characterized in that the logic valve on the head side of the clamping cylinder is closed to shut off the hydraulic power source or to open the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1730289U JPH0731886Y2 (en) | 1989-02-15 | 1989-02-15 | Clamping hydraulic circuit for die casting machine etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1730289U JPH0731886Y2 (en) | 1989-02-15 | 1989-02-15 | Clamping hydraulic circuit for die casting machine etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02108557U true JPH02108557U (en) | 1990-08-29 |
| JPH0731886Y2 JPH0731886Y2 (en) | 1995-07-26 |
Family
ID=31230962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1730289U Expired - Fee Related JPH0731886Y2 (en) | 1989-02-15 | 1989-02-15 | Clamping hydraulic circuit for die casting machine etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0731886Y2 (en) |
-
1989
- 1989-02-15 JP JP1730289U patent/JPH0731886Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0731886Y2 (en) | 1995-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |