CN2629952Y - Hydraulic safety circuit for injection mouldnig machine - Google Patents
Hydraulic safety circuit for injection mouldnig machine Download PDFInfo
- Publication number
- CN2629952Y CN2629952Y CN 03229473 CN03229473U CN2629952Y CN 2629952 Y CN2629952 Y CN 2629952Y CN 03229473 CN03229473 CN 03229473 CN 03229473 U CN03229473 U CN 03229473U CN 2629952 Y CN2629952 Y CN 2629952Y
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- Prior art keywords
- valve
- hydraulic
- control
- oil
- closing
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- Expired - Lifetime
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a hydraulic safety loop for the plastic jetting-molding machine, which comprises a mold opening/closing valve, a mold opening/closing oil cylinder, and a reversing valve connected with the cylinder and controlled by a safety door. The mold opening chamber is connected with an operating oil port of the mold opening/closing valve, the pressure port of the mold opening/closing valve is connected with the pressure oil, and the oil return port is connected with an oil tank. The utility model is characterized in that: the other working port of the mold opening/closing valve is connected with the inlet of the hydraulic-control unidirectional flow component and the pressure port of the reversing valve controlled by the safety door; an operating port of the reversing valve is connected with the control chamber of the hydraulic-control unidirectional flow component and the oil return port is connected with the oil tank; and the outlet of the hydraulic-control unidirectional flow component is connected with the mold closing chamber of the mold opening/closing oil cylinder. The utility model is provided with the advantage that a cartridge valve or a hydraulic control one-way valve is additionally provided between the relief valve and the mold closing chamber, so that the whole hydraulic safety loop not only is assembled simply but also can reduce the pipe volume, the hydraulic piping becomes beautiful, the closed holding chamber of the main oil pipe in the mold opening/closing process cannot be changed largely and the mold closing and opening actions become more steadily.
Description
Technical field
The utility model relates to the hydraulic pressure security circuit, particularly relates to the hydraulic pressure security circuit that is used for injection machine.
Background technology
In order to guarantee personal safety, injection machine often has the hydraulic pressure security circuit, guaranteeing special or in emergency circumstances, does not carry out or stops mould assembling action.
The hydraulic pressure security circuit of middle-size and small-size machine adopted the mechanical trip valve V2 of a hydraulic pressure safety effect as shown in Figure 1 directly to be connected on the control mode of major loop in the past, there is following shortcoming in this loop: in order to guarantee the rapidity of machine folding mould, rise safety effect mechanical trip valve V2 and and reversal valve V1 between the specification of oil pipe bigger, can cause the assembling difficulty like this; And the hydraulic fluid port switching split cavity action of mechanical trip valve V2 is influential in the die sinking process, mainly is that the moment hydraulic fluid port switching of V2 has caused that cavity volume that working connection seals changes between V2 and V1, and then pressure is changed, and causes the die sinking impact.In addition, after locked mode finished, the oil in when opening safety door because matched moulds chamber can pass through the V2 oil sump tank, kept phenomenon incessantly so clamp force also can take place.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Injection molding machine hydraulic safety circuit at above-mentioned prior art present situation, to overcome the existing above-mentioned shortcoming of present Injection molding machine hydraulic safety circuit.
The utility model solves the problems of the technologies described above the technical scheme that is adopted:
Injection molding machine hydraulic safety circuit, comprise folding mould valve and folding mould oil cylinder and the reversal valve that links to each other thereof by safety door control, the actuator port in die sinking chamber and folding mould valve is connected, the pressure port of folding mould valve connects pressure oil, oil recirculating port connecting tank, it is characterized in that: another working hole of folding mould valve links to each other with the pressure port of the import of fluid-control one-way flow element with the reversal valve of being controlled by safety door, the actuator port of reversal valve and the control chamber of fluid-control one-way flow element are connected, its oil recirculating port connecting tank, the outlet of fluid-control one-way flow element links to each other with the matched moulds chamber of folding mould oil cylinder.
Described fluid-control one-way flow element is a hydraulic control one-way valve, also can be inserted valve, specifically can select according to required fluid flow size.
Compared with prior art, advantage of the present utility model is to adopt and installs inserted valve or hydraulic control one-way valve additional between safety valve and matched moulds chamber, whole hydraulic pressure security circuit is not only assembled simply, can reduce pipe volume and size, make fluid pressure line attractive in appearance, and cavity volume that working connection seals can bigger variation in die sinking and matched moulds process, makes the action of folding mould more stable.
Description of drawings
Fig. 1 is existing Injection molding machine hydraulic safety circuit;
Fig. 2 is the hydraulic diagram of the utility model embodiment;
Fig. 3 is the hydraulic diagram of another embodiment of the utility model.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 2,3, the P mouth of folding mould valve V1 connects pressure oil, T mouth connected tank, and the A mouth is connected with the import A2 of inserted valve or hydraulic control one-way valve V3, and the P1 of V2 is connected with the A of V1 and the control chamber C of V3 respectively with A1, and its T mouth takes back oil.The outlet A3 of V3 links to each other with the matched moulds chamber of oil cylinder 1, and the die sinking chamber is connected with the B mouth of V1, constitutes folding mould and hydraulic pressure security circuit.Fig. 2 fluid-control one-way flow element is an inserted valve, and Fig. 3 is a hydraulic control one-way valve.
During use, when safety door 2 was closed, safety door 2 left the roller of V2, and A1 and the T of V2 communicate, and the control chamber C of V3 is by the V2 oil sump tank, and the import and export of V3 can flow freely, and machine can normally be done the action of folding mould.When safety door 2 was opened, safety door was depressed the roller of V2, and the P1 of V2 and A1 are communicated, thereby the control chamber C of V3 is communicated with the A working connection by V2.When D2 energising, P and the A of V1 communicates, B and T communicate constantly, and when pressure oil entered the A working connection, because the control chamber of V3 is a pressure oil, this moment, V3 closed, and machine can not be done mould assembling action, plays the hydraulic pressure safety effect.When D1 energising, P and the B of V1 communicates, when A and T communicate, when pressure oil enters the B working connection since this moment the A working connection and oil return communicate, V3 can normally open, machine can be done the die sinking action.And in the die sinking process, the hydraulic fluid port moment switching of V2 does not cause the bigger variation of working connection sealing cavity volume volume between V3 and V1, so machine folding mould does not impact.In addition, after locked mode finished, the oil in matched moulds chamber can not pass through the V3 oil sump tank when opening safety door, did not keep phenomenon incessantly so clamp force can not take place.
Claims (3)
1, Injection molding machine hydraulic safety circuit, comprise folding mould valve and folding mould oil cylinder and the reversal valve that links to each other thereof by safety door control, the actuator port in die sinking chamber and folding mould valve is connected, the pressure port of folding mould valve connects pressure oil, oil recirculating port connecting tank, it is characterized in that: another working hole of folding mould valve links to each other with the pressure port of the import of fluid-control one-way flow element with the reversal valve of being controlled by safety door, the actuator port of reversal valve and the control chamber of fluid-control one-way flow element are connected, its oil recirculating port connecting tank, the outlet of fluid-control one-way flow element links to each other with the matched moulds chamber of folding mould oil cylinder.
2, Injection molding machine hydraulic safety circuit as claimed in claim 1 is characterized in that: described fluid-control one-way flow element is a hydraulic control one-way valve.
3, Injection molding machine hydraulic safety circuit as claimed in claim 1 is characterized in that: described fluid-control one-way flow element is an inserted valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03229473 CN2629952Y (en) | 2003-03-17 | 2003-03-17 | Hydraulic safety circuit for injection mouldnig machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03229473 CN2629952Y (en) | 2003-03-17 | 2003-03-17 | Hydraulic safety circuit for injection mouldnig machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2629952Y true CN2629952Y (en) | 2004-08-04 |
Family
ID=34291032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03229473 Expired - Lifetime CN2629952Y (en) | 2003-03-17 | 2003-03-17 | Hydraulic safety circuit for injection mouldnig machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2629952Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423220A (en) * | 2012-05-24 | 2013-12-04 | 合肥神马科技集团有限公司 | Hydraulic system for controlling telescopic arms |
-
2003
- 2003-03-17 CN CN 03229473 patent/CN2629952Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423220A (en) * | 2012-05-24 | 2013-12-04 | 合肥神马科技集团有限公司 | Hydraulic system for controlling telescopic arms |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO DAGANG HAITIAN MACHINERY CO., LTD. Free format text: FORMER OWNER: NINGBO HAITIAN CO., LTD. Effective date: 20060721 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060721 Address after: 315821 Zhejiang city of Ningbo province Beilun Jiangnan export processing zone Patentee after: Dagang Haitian Machinery Co., Ltd., Ningbo Address before: 315821 Zhejiang city of Ningbo province Beilun Jiangnan export processing zone Patentee before: Ningbo Haitian Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO HAITIAN PLASTICS MACHINERY GROUP CO., LTD. Free format text: FORMER NAME OR ADDRESS: NINGBO DAGANG HAITIAN MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 315821 Zhejiang city of Ningbo province Beilun Jiangnan export processing zone Patentee after: Ningbo Haitian Plastics Machinery Group Co., Ltd. Address before: 315821 Zhejiang city of Ningbo province Beilun Jiangnan export processing zone Patentee before: Dagang Haitian Machinery Co., Ltd., Ningbo |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Haitian Huayuan Machinery Co.,Ltd. Assignor: Ningbo Haitian Plastics Machinery Group Co., Ltd. Contract fulfillment period: 2007.12.5 to 2012.12.4 Contract record no.: 2008330000139 Denomination of utility model: Hydraulic safety circuit for injection mouldnig machine Granted publication date: 20040804 License type: Exclusive license Record date: 20080806 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.5 TO 2012.12.4 Name of requester: NINGBO HAITIAN HUAYUAN MACHINERY CO. Effective date: 20080806 |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Xiaogang road Beilun 315821 Zhejiang Province, Ningbo City, No. 32 Patentee after: Haitian Plastics Machinery Ltd. Address before: 315821 Zhejiang city of Ningbo province Beilun Jiangnan export processing zone Patentee before: Ningbo Haitian Plastics Machinery Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130317 Granted publication date: 20040804 |