CN203543047U - Die sinking buffer loop for clamping mechanism of injection molding machine - Google Patents
Die sinking buffer loop for clamping mechanism of injection molding machine Download PDFInfo
- Publication number
- CN203543047U CN203543047U CN201320626547.3U CN201320626547U CN203543047U CN 203543047 U CN203543047 U CN 203543047U CN 201320626547 U CN201320626547 U CN 201320626547U CN 203543047 U CN203543047 U CN 203543047U
- Authority
- CN
- China
- Prior art keywords
- solenoid directional
- directional control
- die sinking
- control valve
- hydraulic cylinder
- 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
- 238000001746 injection moulding Methods 0.000 title claims abstract description 8
- 239000002828 fuel tank Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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Abstract
The utility model discloses a die sinking buffer loop for a clamping mechanism of an injection molding machine. The die sinking buffer loop comprises a hydraulic cylinder, a first solenoid directional valve, a second solenoid directional valve, a throttle and an oil tank, wherein the rodless cavity of the hydraulic cylinder is respectively communicated with the throttle and the work oil port of the first solenoid directional valve, the throttle is communicated with the work oil port of the second solenoid directional valve, the oil return port of the first solenoid directional valve and the oil return port of the second solenoid directional valve are respectively communicated with the oil tank, the rod cavity of the hydraulic cylinder is respectively communicated with the work oil port of the first solenoid directional valve and the work oil port of the second solenoid directional valve; the die sinking buffer loop is characterized in that the rod cavity of the hydraulic cylinder is connected with a check valve which is communicated with the oil return port of the first solenoid directional valve. The die sinking buffer loop has the advantages that the first section of actions in die sinking can be carried out coherently as the oil can be offered to the rod cavity timely due to the installation of the check valve in the loop of the rod cavity.
Description
Technical field
The utility model relates to the hydraulic control system in injection machine, relates in particular to a kind of die sinking buffer loop for injection molding machine mold clamping mechanism.
Background technology
At present, the clamping mechanism of a lot of injection machines adopts hydraulic system to control opening/closing of mould, and at a slow speed during die sinking, in order to protect the safety of mould, is set as low discharge high pressure when die sinking parameter is set at die sinking first paragraph.And the clamping mechanism of general injection machine is crankshaft connecting rod system; the deformation producing when high-voltage lock mould is larger; in die sinking process at a slow speed; there will be frame shake or part getting stuck, make machine unstable, its main cause is that the rod chamber of hydraulic cylinder has produced negative pressure; there is vacuum phenomenon; and the flow of giving due to first paragraph system is not high, system repairing not in time, causes die sinking to pause.
Summary of the invention
It is timely that technical problem to be solved in the utility model is to provide a kind of fuel feeding to hydraulic cylinder rod chamber, makes the coherent die sinking buffer loop for injection molding machine mold clamping mechanism of die sinking first paragraph action.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of die sinking buffer loop for injection molding machine mold clamping mechanism, comprise hydraulic cylinder, the first solenoid directional control valve, the second solenoid directional control valve, choke valve and fuel tank, the rodless cavity of described hydraulic cylinder respectively with described choke valve, the actuator port of the first solenoid directional control valve is connected, described choke valve is connected with the actuator port of described the second solenoid directional control valve, the oil return opening of the oil return opening of the first described solenoid directional control valve and the second described solenoid directional control valve is connected with described fuel tank respectively, the rod chamber of described hydraulic cylinder respectively with the actuator port of described the first solenoid directional control valve, the actuator port of the second solenoid directional control valve is connected, on the rod chamber of described hydraulic cylinder, be connected with check valve, described check valve is connected with the oil return opening of described the first solenoid directional control valve.
Compared with prior art, the utility model has the advantages that on the rod chamber due to hydraulic cylinder and be connected with check valve, check valve is connected with the oil return opening of the first solenoid directional control valve, when die sinking, in the loop of rod chamber, check valve is installed, make the fuel feeding of rod chamber in time, guaranteed that the action of die sinking first paragraph is coherent.
Accompanying drawing explanation
Fig. 1 is oil circuit schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in the figure, a kind of die sinking buffer loop for injection molding machine mold clamping mechanism, comprise hydraulic cylinder 1, the first solenoid directional control valve 2, the second solenoid directional control valve 3, choke valve 4 and fuel tank 5, the rodless cavity MC of hydraulic cylinder 1 respectively with choke valve 4, the actuator port A of the first solenoid directional control valve 2 is connected, choke valve 4 is connected with the actuator port A of the second solenoid directional control valve 3, the oil return inlet T of the oil return inlet T of the first solenoid directional control valve 2 and the second solenoid directional control valve 3 is connected with fuel tank 5 respectively, the rod chamber MO of hydraulic cylinder 1 respectively with the actuator port B of the first solenoid directional control valve 2, the actuator port B of the second solenoid directional control valve 3 is connected, on the rod chamber MO of hydraulic cylinder 1, be connected with check valve 6, check valve 6 is connected with the oil return inlet T of the first solenoid directional control valve 2.
In above-described embodiment; the specific works process of die sinking buffer loop is: at die sinking first paragraph at a slow speed during die sinking; the second solenoid directional control valve 3 is worked; choke valve 4 is controlled the oil return of the rodless cavity MC of hydraulic cylinder 1 and is impacted; check valve 6 desorption system oil subsidies are repaid the moment vacuum that moving die plate occurs during to the rod chamber MO applied thrust of hydraulic cylinder 1 because of mechanically deform, shake and pause while having avoided die sinking at a slow speed.
Claims (1)
1. the die sinking buffer loop for injection molding machine mold clamping mechanism, comprise hydraulic cylinder, the first solenoid directional control valve, the second solenoid directional control valve, choke valve and fuel tank, the rodless cavity of described hydraulic cylinder respectively with described choke valve, the actuator port of the first solenoid directional control valve is connected, described choke valve is connected with the actuator port of described the second solenoid directional control valve, the oil return opening of the oil return opening of the first described solenoid directional control valve and the second described solenoid directional control valve is connected with described fuel tank respectively, the rod chamber of described hydraulic cylinder respectively with the actuator port of described the first solenoid directional control valve, the actuator port of the second solenoid directional control valve is connected, on the rod chamber of the hydraulic cylinder described in it is characterized in that, be connected with check valve, described check valve is connected with the oil return opening of described the first solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626547.3U CN203543047U (en) | 2013-10-11 | 2013-10-11 | Die sinking buffer loop for clamping mechanism of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626547.3U CN203543047U (en) | 2013-10-11 | 2013-10-11 | Die sinking buffer loop for clamping mechanism of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203543047U true CN203543047U (en) | 2014-04-16 |
Family
ID=50461213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320626547.3U Expired - Lifetime CN203543047U (en) | 2013-10-11 | 2013-10-11 | Die sinking buffer loop for clamping mechanism of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203543047U (en) |
-
2013
- 2013-10-11 CN CN201320626547.3U patent/CN203543047U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315821 Jiangnan export processing trade zone, Beilun District, Ningbo City, Zhejiang Province Patentee after: Bole Intelligent Equipment Co.,Ltd. Address before: 315821 Jiangnan export processing trade zone, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO SHUANGMA MACHINERY INDUSTRY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 337000 Qingyuan Industrial Park, Anyuan Industrial Park, Anyuan District, Pingxiang City, Jiangxi Province Patentee after: Bole Intelligent Equipment Co.,Ltd. Address before: 315821 Jiangnan export processing trade zone, Beilun District, Ningbo City, Zhejiang Province Patentee before: Bole Intelligent Equipment Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |