CN202480349U - Hydraulic safety and security circuit of injection molding machine - Google Patents
Hydraulic safety and security circuit of injection molding machine Download PDFInfo
- Publication number
- CN202480349U CN202480349U CN2012200640606U CN201220064060U CN202480349U CN 202480349 U CN202480349 U CN 202480349U CN 2012200640606 U CN2012200640606 U CN 2012200640606U CN 201220064060 U CN201220064060 U CN 201220064060U CN 202480349 U CN202480349 U CN 202480349U
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- valve
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- actuator port
- safety
- oil return
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Abstract
A hydraulic safety and security circuit of an injection molding machine is characterized by an opening and closing mold valve which is connected with an oil inlet end of a system. A first working oil port of the opening and closing mold valve is connected with an oil return port of a differential valve, a second working oil port of the opening and closing mold valve is connected with a rodless cavity of a die-closing cylinder, and an oil return port of the opening and closing mold valve is connected with an oil return end of the system. A second working oil port of the differential valve is connected with a rod cavity of the die-closing cylinder, an oil inlet of the differential valve is connected with a first working oil port of a safety valve, a second working oil port of the safety valve is connected with the rodless cavity of the die-closing cylinder, and the first working oil port of the safety valve is connected with a first working oil port of a low-pressure mold pressure retaining valve. An oil return port of the low-pressure mold pressure retaining valve is connected with the oil return end of the system, opening or closing of the safety valve is controlled by a cam valve, and a one-way valve is disposed between the rodless cavity of the die-closing cylinder and the second working oil port of the cam valve and connected with the rodless cavity of the die-closing cylinder and the second working oil port of the cam valve. The hydraulic safety and security circuit of the injection molding machine has a simple and effective structure and a valve core feedback function, and is more secure.
Description
Affiliated technical field
The present invention relates to a kind of hydraulic circuit system, the hydraulic injection molding machine security insurance loop of the charged gas feedback of especially a kind of spool.
Background technology
Traditional injection machine folding mould hydraulic circuit is a direction valve control Mode-locking oil cylinder; Through system pressure flow valve or the pressure flow of oil pump regulate reach the folding mould slow-fast-slow action demand; Through the pilot valve of a simple cam valve control folding mould direction valve, realize the hydraulic safe insurance function simultaneously.The security performance along with production equipment improves constantly, and traditional hydraulic safe security circuit can not satisfy the demands.Foreign technology uses the safety valve control injection moulding machine mode-locking train of mechanism oil-in of belt spool feedback as European CE standard; Like this when opening the injection machine safety door; CE safety valve shutdown system oil-in; Can't realize die sinking like this and eject action, differ with domestic most injection machine user use habits, and cost be higher.
Summary of the invention
The utility model technical problem to be solved: overcome the above-mentioned deficiency of prior art and a kind of hydraulic injection molding machine security insurance loop is provided, in order to overcome the defective in present hydraulic injection molding machine security insurance loop.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of hydraulic injection molding machine security insurance loop; It is characterized in that the folding mould valve that links to each other with the system oil inlet end; First actuator port of folding mould valve links to each other with the oil return opening of different valve; Second actuator port of folding mould valve links to each other with the rodless cavity of die cylinder, and the oil return opening of folding mould valve links to each other with the system oil return end; Second actuator port of different valve links to each other with the rod chamber of die cylinder, and the oil-in of different valve links to each other with first actuator port of safety valve, and second actuator port of safety valve links to each other with the rodless cavity of die cylinder, forms differential circuit; First actuator port of safety valve links to each other with first actuator port that valve is protected in low pressure molding; The oil return opening system oil return end that valve is protected in low pressure molding links to each other, and the open and close of safety valve are controlled by cam valve, are connected with check valve between second actuator port of the rodless cavity of die cylinder and cam valve.
A kind of hydraulic injection molding machine security insurance loop is characterized in that folding mould valve is a three-position four-way valve, and different valve is a two-position four-way valve, and safety valve is the inserted valve of the charged gas feedback of spool.
Beneficial effect of the present invention:
1. the injection machine work safety has been improved in a hydraulic injection molding machine security insurance loop, meets domestic most injection machine users' use habit simultaneously again;
2. a hydraulic injection molding machine security insurance loop is simple in structure effective, practices thrift cost.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model.
Be labeled as among the figure: 1. folding mould valve; 2. different valve; 3. cam valve; 4. die cylinder; 5. check valve; 6. safety valve; 7. valve is protected in low pressure molding.
P representes system high pressure oil.
T representes the system low-voltage oil return.
Dotted line is a control loop.
Solid line is a working connection.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in the figure; A kind of hydraulic injection molding machine security insurance loop; It is characterized in that the folding mould valve (1) that links to each other with the system oil inlet end; First actuator port of folding mould valve links to each other with the oil return opening of different valve (2), and second actuator port of folding mould valve links to each other with the rodless cavity of die cylinder (4), and the oil return opening of folding mould valve links to each other with the system oil return end; Second actuator port of different valve links to each other with the rod chamber of die cylinder (4), and the oil-in of different valve links to each other with first actuator port of safety valve (6), and second actuator port of safety valve (6) links to each other with the rodless cavity of die cylinder (4), forms differential circuit; First actuator port of safety valve (6) links to each other with first actuator port that valve (7) is protected in low pressure molding; The oil return opening system oil return end that valve (7) is protected in low pressure molding links to each other, and the open and close of safety valve (6) are connected with check valve (5) by cam valve (3) control between second actuator port of the rodless cavity of die cylinder (4) and cam valve (3).
Described folding mould valve (1) is a three-position four-way valve, and different valve (2) is a two-position four-way valve, and safety valve (6) is the inserted valve of the charged gas feedback of spool.
Before the injection machine regular event, first closed safe door, at this moment, cam valve (3) is in meta; Safety valve (6) is in open mode, and during mould assembling action, system's oil inlet end low speed flow is imported; The YA3 of folding mould valve (1) gets electric, and the P1 mouth leads to the B1 mouth, and system pressure oil arrives the rodless cavity of die cylinder (4) through safety valve (6) through folding mould valve (1); The rod chamber oil return of die cylinder (4) arrives the A1 mouth of folding mould valve (1) through the B2 mouth of different valve (2), gets back to the T1 mouth then; Get back to the system oil return end at last, promote the die cylinder action, realize the injection machine mould assembling action; When safety door was opened, cam valve (3) was depressed, and safety valve (6) is in closed condition, and system pressure oil can't arrive Mode-locking oil cylinder, and the electric injection machine computer that feeds back to of safety valve (6) spool is cancelled power output simultaneously, realized injection machine matched moulds security insurance function.
Be connected with check valve (5) between second actuator port of the rodless cavity of die cylinder (4) and cam valve (3); Second actuator port of direction wherein from the rodless cavity of die cylinder (4) to cam valve (3); At this moment no matter cam valve (3) is in the meta state that still is depressed, and can realize the die sinking action.
The injection machine work safety has been improved in a kind of hydraulic injection molding machine security insurance loop, meets domestic most injection machine users' use habit simultaneously again; Simple in structure effective, practice thrift cost.
Claims (2)
1. hydraulic injection molding machine security insurance loop; It is characterized in that the folding mould valve (1) that links to each other with the system oil inlet end; First actuator port of folding mould valve links to each other with the oil return opening of different valve (2); Second actuator port of folding mould valve links to each other with the rodless cavity of die cylinder (4), and the oil return opening of folding mould valve links to each other with the system oil return end; Second actuator port of different valve (2) links to each other with the rod chamber of die cylinder (4), and the oil-in of different valve (2) links to each other with first actuator port of safety valve (6), and second actuator port of safety valve (6) links to each other with the rodless cavity of die cylinder (4), forms differential circuit; First actuator port of safety valve (6) links to each other with first actuator port that valve (7) is protected in low pressure molding; The oil return opening system oil return end that valve (7) is protected in low pressure molding links to each other, and the open and close of safety valve (6) are connected with check valve (5) by cam valve (3) control between second actuator port of the rodless cavity of die cylinder (4) and cam valve (3).
2. like a kind of hydraulic injection molding machine security insurance loop of claim, it is characterized in that described folding mould valve (1) is a three-position four-way valve, different valve (2) is a two-position four-way valve, and safety valve (6) is the inserted valve of the charged gas feedback of spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200640606U CN202480349U (en) | 2012-02-20 | 2012-02-20 | Hydraulic safety and security circuit of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200640606U CN202480349U (en) | 2012-02-20 | 2012-02-20 | Hydraulic safety and security circuit of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202480349U true CN202480349U (en) | 2012-10-10 |
Family
ID=46954806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200640606U Expired - Fee Related CN202480349U (en) | 2012-02-20 | 2012-02-20 | Hydraulic safety and security circuit of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202480349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909838A (en) * | 2012-10-24 | 2013-02-06 | 昌盛达机械(浙江)有限公司 | Double-cylinder differential fast-opening and fast-closing hydraulic system of direct-pressure injection molding machine |
| CN109466035A (en) * | 2017-09-07 | 2019-03-15 | 海天塑机集团有限公司 | Injection molding machine open mold hydraulic control system and injection molding machine |
-
2012
- 2012-02-20 CN CN2012200640606U patent/CN202480349U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909838A (en) * | 2012-10-24 | 2013-02-06 | 昌盛达机械(浙江)有限公司 | Double-cylinder differential fast-opening and fast-closing hydraulic system of direct-pressure injection molding machine |
| CN102909838B (en) * | 2012-10-24 | 2015-09-23 | 昌盛达机械(浙江)有限公司 | The differential rapid mould opening-closing hydraulic system of direct press type injection moulding machine twin-tub |
| CN109466035A (en) * | 2017-09-07 | 2019-03-15 | 海天塑机集团有限公司 | Injection molding machine open mold hydraulic control system and injection molding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20140220 |