CN205497998U - Two board -like injection molding machine pull rod self system - Google Patents
Two board -like injection molding machine pull rod self system Download PDFInfo
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- CN205497998U CN205497998U CN201521122690.4U CN201521122690U CN205497998U CN 205497998 U CN205497998 U CN 205497998U CN 201521122690 U CN201521122690 U CN 201521122690U CN 205497998 U CN205497998 U CN 205497998U
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- valve
- pressure
- pull bar
- oil
- direction valve
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Two board -like injection molding machine pull rod self system is including injection molding machine pull rod action oil circuit to increase hydraulic system and control system. The utility model discloses adopt independent hydraulic control return circuits to four pull rods, oil feed that can every hydro -cylinder of independent control moves with the oil return, and then mode locking pressure that can independently adjust mode locking hydro -cylinder to make four relays that the pull rod receives to reach each self -balancing, proofread and correct pull rod stress in the course of the work, lengthen the pull rod life -span, improve the performance of injection molding machine.
Description
Technical field
This utility model relates to the control system of two-plate injection machine pull bar stress.
Background technology
The stress while that four pull bars of two-plate injection machine being during locked mode, if four pull bar discontinuity equalizations, can affect machine performance, reduce the pull bar life-span.
Existing two-plate injection machine is controlled four pull bars by an injection machine backward stick action oil circuit simultaneously, and the stress of every pull bar is the most identical.This oil circuit can not individually adjust the stress of every pull bar, thus can cause the discontinuity equalization of four pull bars, thus can reduce the pull bar life-span.
Summary of the invention
This utility model is solved the technical problem that it is to overcome the disadvantages mentioned above of prior art to provide a kind of two-plate injection machine pull bar self correcting system, can be from four pull bar stress of dynamic(al) correction, thus correct bar stress in the course of the work, in the extending pull rod life-span, improve machine performance.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is:
Two-plate injection machine pull bar self correcting system, including injection machine backward stick action oil circuit, it is characterised in that: injection machine backward stick action oil circuit increases hydraulic system and control system；
Control system includes installing on every pull bar of four pull bars locked mode force measuring sensors, each locked mode force measuring sensors detects the tension of each pull bar and is transferred to PLC, the each tension collected is compared by PLC with each setting value, outputs control signals to the clamp force hydraulic system beyond the pull bar of nominal error scope；
Hydraulic system: increase pressure control loop and turnover oil return line in two trigger pull bars each action oil circuit respectively, turnover oil return line includes inserted valve and direction valve, direction valve controls the unlatching of inserted valve, with the use of the turnover oil action controlling Mode-locking oil cylinder, pressure control loop includes pressure valve and proportional pressure valve, controlling circuit pressure, the output signal of control system controls proportional pressure valve；
During high-voltage lock mould, each inserted valve opened by each direction valve, Mode-locking oil cylinder oil-feed simultaneously；During pressure release, each direction valve controls to open each inserted valve, and the public direction valve of whole oil circuit is opened public inserted valve and realized oil return.
If locked mode force measuring sensors detects that the stress of certain pull bar is beyond normal scope, if stress is less than normal, controller cuts out three corresponding inserted valves by controlling its excess-three direction valve, corresponding inserted valve opened by the direction valve of this pull bar, the pressure of automatic adjustment height pressure control loop pressure valve is to certain value simultaneously, the Mode-locking oil cylinder oil-feed of this pull bar, thus heighten the stress of pull bar.If this pull bar stress is bigger than normal, controller cuts out three corresponding inserted valves by controlling its excess-three direction valve, corresponding inserted valve opened by the direction valve of this pull bar, automatically turn down the pressure of pressure control loop pressure valve to certain value simultaneously, Mode-locking oil cylinder is through pressure control loop overflow, reduce circuit pressure, so that this pull bar stress reduces.
Compared with prior art, the utility model has the advantage of: use independent hydraulic control circuit for four pull bars, can independently control oil-feed and the oil return action of each oil cylinder, and then can the locked mode pressure of independent regulation Mode-locking oil cylinder, so that relay suffered by four pull bars can reach each self-balancing, correct bar stress, extending pull rod life-span in the course of the work, improve the performance of injection machine.
Accompanying drawing explanation
Fig. 1 is the control principle drawing of this utility model embodiment two-plate injection machine pull bar self correcting system.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
As it is shown in figure 1, two-plate injection machine pull bar self correcting system, including hydraulic system and control system.
Hydraulic system is as a example by pull bar 1, and P mouth is working connection hydraulic fluid port, and hydraulic oil connects through the Mode-Locking Cavity of inserted valve V5 with pull bar 1, and direction valve V1 controls the folding of chamber oil pressure cntrol inserted valve V5 by controlling inserted valve, controls the break-make of locked mode oil circuit.
Pressure valve V9 and the pressure of V15 composition second voltage regulation loop modulation locked mode oil circuit.
Remaining each pull bar 2,3,4 hydraulic system is similar to pull bar 1.
Inserted valve V5, V6, V7 are all connected with public inserted valve V13 with the outlet of V8, and inserted valve V13 is controlled by public direction valve V14, and public direction valve V14, public inserted valve V13 collectively constitute pressure release loop.
Control system includes: install clamp force strain sensing instrument on four pull bars, detect the tension of each pull bar, PLC examinations also gathers strain data, and the optimum deflection of the data collected with specific clamp force lower link is compared, when departure is beyond setting, controller controls corresponding direction valve action by controlling end D1, D2, D3, D4 and D14 output voltage signal, thus controls corresponding inserted valve folding, and then controls the break-make of locked mode oil circuit.
The signal that controller controls DP1, DP2, DP3 and DP4 by output analog value exports, thus controls the oil liquid pressure of corresponding each Draw bar lock die cavity, and then realizes automatically adjusting the deflection of corresponding pull bar.
Hydraulic control: add one group of pressure control loop and turnover oil return line in two trigger backward stick action oil circuits respectively, be now described in detail as a example by pull bar 1 according to Fig. 1.
Inserted valve V5 and direction valve V1 controls loop with the use of the turnover oil action of control Mode-locking oil cylinder, pressure valve V9 and proportional pressure valve 15 decomposition pressure.When four pull bar stress are identical, four pull bar oil circuit control pressure are identical, and during high-voltage lock mould, direction valve V1, V2, V3 and V4 control to open inserted valve V5, V6, V7 and V8, Mode-locking oil cylinder oil-feed simultaneously.During pressure release, direction valve V1, V2, V3 and V4 control to open inserted valve V5, V6, V7 and V8, and public direction valve V14 controls to open public inserted valve V13 and realizes oil return.If the stress that locked mode force measuring sensors detects single pull bar exceeds normal scope, as a example by pull bar 1, if stress is less than normal, then controller sends instruction, open the turnover oil return line of pull bar 1, close the turnover oil return line of other three pull bars, i.e. by control direction valve V2, V3 and V4 closes inserted valve V6, V7 and V8, control direction valve V1 open inserted valve V5, and the pressure of automatic adjustment height pressure control loop V9 is to certain value simultaneously, pull bar 1 Mode-locking oil cylinder oil-feed, thus heighten the stress of pull bar 1.If stress is bigger than normal, controller passes through control direction valve V2, V3 and V4 closes inserted valve V6, V7 and V8, control direction valve V1 opens inserted valve V5, automatically turns down the pressure of pressure control loop V9 to certain value simultaneously, and Mode-locking oil cylinder is through pressure control loop overflow, reduce circuit pressure, so that pull bar 1 stress reduces.
In figure:
V1, V2, V3, V4, V14 represent the direction valve controlling inserted valve folding.
V5, V6, V7, V8, V13 represent the inserted valve controlling locked mode oil circuit break-make.
V9, V10, V11, V12 represent the pressure valve controlling locked mode pressure.
V15, V16, V17, V18 represent the proportional pressure valve controlling locked mode pressure.
P represents system high pressure oil.
H represents low pressure oil return.
Dotted line represents oil circuit control.
Solid line represents working connection.
Claims (1)
1. two-plate injection machine pull bar self correcting system, including injection machine backward stick action oil circuit, it is characterised in that: injection machine backward stick action oil circuit increases hydraulic system and control system；
Control system includes installing on every pull bar of four pull bars locked mode force measuring sensors, each locked mode force measuring sensors detects the tension of each pull bar and is transferred to PLC, the each tension collected is compared by PLC with each setting value, outputs control signals to the clamp force hydraulic system beyond the pull bar of nominal error scope；
Hydraulic system: increase pressure control loop and turnover oil return line in two trigger pull bars each action oil circuit respectively, turnover oil return line includes inserted valve and direction valve, direction valve controls the unlatching of inserted valve, with the use of the turnover oil action controlling Mode-locking oil cylinder, pressure control loop includes pressure valve and proportional pressure valve, controlling circuit pressure, the output signal of control system controls proportional pressure valve；
During high-voltage lock mould, each inserted valve opened by each direction valve, Mode-locking oil cylinder oil-feed simultaneously；During pressure release, each direction valve controls to open each inserted valve, and the public direction valve of whole oil circuit is opened public inserted valve and realized oil return；
If locked mode force measuring sensors detects that the stress of certain pull bar is beyond normal scope, if stress is less than normal, controller cuts out three corresponding inserted valves by controlling its excess-three direction valve, corresponding inserted valve opened by the direction valve of this pull bar, the pressure of automatic adjustment height pressure control loop pressure valve is to certain value simultaneously, the Mode-locking oil cylinder oil-feed of this pull bar, thus heighten the stress of pull bar；If this pull bar stress is bigger than normal, controller cuts out three corresponding inserted valves by controlling its excess-three direction valve, corresponding inserted valve opened by the direction valve of this pull bar, automatically turn down the pressure of pressure control loop pressure valve to certain value simultaneously, Mode-locking oil cylinder, through pressure control loop overflow, reduces circuit pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122690.4U CN205497998U (en) | 2015-12-31 | 2015-12-31 | Two board -like injection molding machine pull rod self system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122690.4U CN205497998U (en) | 2015-12-31 | 2015-12-31 | Two board -like injection molding machine pull rod self system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205497998U true CN205497998U (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521122690.4U Withdrawn - After Issue CN205497998U (en) | 2015-12-31 | 2015-12-31 | Two board -like injection molding machine pull rod self system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205497998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500649A (en) * | 2015-12-31 | 2016-04-20 | 海天塑机集团有限公司 | Two-plate type injection molding machine pull rod self-correcting system |
-
2015
- 2015-12-31 CN CN201521122690.4U patent/CN205497998U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500649A (en) * | 2015-12-31 | 2016-04-20 | 海天塑机集团有限公司 | Two-plate type injection molding machine pull rod self-correcting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20180102 |
|
| AV01 | Patent right actively abandoned |