CN103042667A - High-speed mould opening-closing hydraulic loop system - Google Patents
High-speed mould opening-closing hydraulic loop system Download PDFInfo
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- CN103042667A CN103042667A CN 201110326025 CN201110326025A CN103042667A CN 103042667 A CN103042667 A CN 103042667A CN 201110326025 CN201110326025 CN 201110326025 CN 201110326025 A CN201110326025 A CN 201110326025A CN 103042667 A CN103042667 A CN 103042667A
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- mould opening
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Abstract
The invention discloses a high-speed mould opening-closing hydraulic loop system, which is characterized by comprising a power system, a mould opening-closing valve, a check valve, a mould opening-closing oil cylinder and an energy accumulator system, wherein the mould opening-closing valve is connected with the power system and the mould opening-closing oil cylinder, the check valve is connected with the oil inlet of the mould opening-closing valve to form a differential loop, the oil inlet of the mould opening-closing valve is simultaneously connected with the pressure port of the energy accumulator system to realize a high-speed mould opening-closing function, a safety valve and a safety pilot valve are connected in series between the mould opening-closing vale and the mould opening-closing oil cylinder to realize a mould opening-closing safety protection function. The high-speed mould opening-closing hydraulic loop system is simple and effective in structure, and not only greatly increases the mould opening-closing speed, shortens the mould opening-closing time and improves the work efficiency, but also has the advantages of mould protection function and the like.
Description
Affiliated technical field
The present invention relates to a kind of hydraulic circuit system, high-speed die opening/closing hydraulic loop on especially a kind of injection machine.
Background technology
Traditional injection machine folding mould hydraulic circuit is a common electromagnetic direction valve control Mode-locking oil cylinder, and folding mould speed is lower, and the injection machine work period is longer.Along with the raising of the level of manufacturing, require the product molding cycle constantly to dwindle, folding mould speed improves constantly, and has required to meet or exceed 500mm/s for high speed folding mould maximal rate.Traditional injection machine has been difficult to the speed that reaches such, and such high-speed of especially stable control often can produce larger impact and vibrations in the high speed motion process.
Summary of the invention
Technical problem to be solved by this invention: overcome the above-mentioned deficiency of prior art and when the action of a kind of high speed folding mould is provided, and can effectively control the die opening/closing hydraulic loop of high speed impact and vibrations.
The technical scheme that the present invention solves its technical problem employing is:
A kind of high-speed die opening/closing hydraulic loop, described system comprises dynamical system, folding mould valve, check valve, folding mould oil cylinder and accumulator system form, and wherein the pressure hydraulic fluid port of folding mould valve links to each other with dynamical system, the first actuator port of folding mould valve links to each other with the rodless cavity of folding mould oil cylinder, the second actuator port links to each other with the rod chamber of folding mould oil cylinder, and check valve links to each other with the pressure hydraulic fluid port of folding mould valve, forms differential circuit; The pressure hydraulic fluid port of folding mould valve links to each other with the pressure hydraulic fluid port of accumulator system simultaneously, realizes high speed folding mould function; Safety valve and safe pilot valve are series in the middle of folding mould valve and the folding mould oil cylinder, realize folding mould safety protection function.
Described folding mould valve is four four-way proportioning valves or 3-position 4-way high frequency response proportioning valve, and dynamical system is Constant Pump System or variable pump systems, or the servo power system, and wherein the outlet of the pressure oil of dynamical system includes non-return valve function.Described accumulator system can be comprised of an accumulator and overflow valve, stop valve, also can add overflow valve by a plurality of accumulators, stop valve forms.Safety valve is comprised of the safe inserted valve of band feedback, also can be comprised of common inserted valve or security solenoid valve.
Beneficial effect of the present invention:
1. a high-speed die opening/closing hydraulic loop reduces the folding mould time, enhances productivity;
2. high-speed die opening/closing hydraulic loop is with mould protection and die sinking back pressure function, in order to avoid mold damage or goods during the injection machine automated production;
3. high-speed die opening/closing hydraulic loop, with the accumulator system, folding mould speed can meet or exceed 500mm/s.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Be labeled as among the figure: 1. dynamical system; 2. folding mould valve; 3. check valve; 4. folding mould oil cylinder; 5. safety valve; 6. safe pilot valve; 7. accumulator system.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
As shown in the figure, a kind of high-speed die opening/closing hydraulic loop, it is characterized in that dynamical system (1), folding mould valve (2), check valve (3), folding mould oil cylinder (4) and accumulator system (7) form, wherein the P2 mouth of folding mould valve (2) links to each other with dynamical system (1), the A2 mouth of folding mould valve (2) links to each other with the rodless cavity of folding mould oil cylinder (4), the B2 mouth links to each other with the rod chamber of folding mould oil cylinder (4), check valve (3) links to each other with the P2 mouth of folding mould valve (2), forms differential circuit; The P2 mouth of folding mould valve (2) links to each other with the pressure port of accumulator system (7) simultaneously, realizes high speed folding mould function; It is middle with folding mould oil cylinder (4) that safety valve (5) and safe pilot valve (6) are series at folding mould valve (2), realizes folding mould safety protection function.
Described a kind of high-speed die opening/closing hydraulic loop is characterized in that folding mould valve (2) is four four-way proportioning valves or 3-position 4-way proportioning valve; Dynamical system (1) is Constant Pump System or variable pump systems, or the servo power system, and wherein dynamical system (1) pressure export includes non-return valve function.
During mould assembling action, the pressure hydraulic fluid port of accumulator system (7) keeps the operating pressure that designs always, folding mould valve (2) is the high frequency response proportioning valve, the P2 mouth leads to the A2 mouth, but opening degree is less, can only allow low discharge to pass through, and pressure oil is by folding mould valve (2), arrive the rodless cavity of die cylinder (4) by safety valve (5), realize the matched moulds slow start; After mould assembling action is moved, the logical A2 mouth opening of folding mould valve (2) P2 mouth increases to maximum, B2 leads to the also corresponding increase of T2 opening, the rod chamber oil return of folding mould oil cylinder (4) is by check valve (3) simultaneously, arrive the P2 mouth of folding mould valve (2), then get back to the rodless cavity of folding mould oil cylinder (4), realize differential high speed loop, realize the high speed mould assembling action; During near closure state, the logical A2 mouth opening of folding mould valve (2) P2 mouth reduces again at mould, and simultaneously, B2 is logical, and the T2 opening is corresponding also reduces, and closure pressing speed reduces rapidly, realizes at a slow speed low-pressure mold protection function; Under normal circumstances, folding mould oil cylinder (4) realizes that under effect of inertia mould closes up, and folding mould valve (2) is realized high-voltage lock mould by hydraulic oil, produces enough clamp forces.If can mould occur that goods, the mouth of a river do not come off fully or when other foreign matters are arranged; moving platen meets obstructions under effect of inertia; can't advance; behind the guard time (generally being set as 3S) that exceeds the low-pressure mold protection setting; folding mould valve (2) is realized the die sinking action, and the protection mould is not damaged.
During die sinking, folding mould valve (2), the P2 mouth leads to the B2 mouth, the existing die sinking action of the logical T2 cause for gossip of A2 mouth.
A kind of high-speed die opening/closing hydraulic loop, the P2 mouth of described folding mould valve (2) links to each other with dynamical system (1), the A2 mouth of folding mould valve (2) also can link to each other with the rod chamber of folding mould oil cylinder (4), the B2 mouth links to each other with the rodless cavity of folding mould oil cylinder (4), when matched moulds and die sinking were moved like this, folding mould valve (2) control mode was opposite with above-mentioned explanation.
A kind of high-speed die opening/closing hydraulic loop significantly improves folding mould speed, and with the accumulator system, folding mould speed can meet or exceed 500mm/s, can effectively reduce the folding mould time, enhances productivity; And with mould protection and die sinking back pressure function, in order to avoid mold damage or goods during the injection machine automated production.
Claims (5)
1. high-speed die opening/closing hydraulic loop, it is characterized in that dynamical system (1), folding mould valve (2), check valve (3), folding mould oil cylinder (4) and accumulator system (7) form, wherein the pressure actuator port of folding mould valve (2) links to each other with dynamical system (1), the first actuator port of folding mould valve (2) links to each other with the rodless cavity of folding mould oil cylinder (4), the second actuator port links to each other with the rod chamber of folding mould oil cylinder (4), check valve (3) links to each other with the pressure actuator port of folding mould valve (2), forms differential circuit; The pressure actuator port of folding mould valve (2) links to each other with the pressure hydraulic fluid port of accumulator system (7) simultaneously, realizes high speed folding mould function; It is middle with folding mould oil cylinder (4) that safety valve (5) and safe pilot valve (6) are series at folding mould valve (2), realizes folding mould safety protection function.
2. a kind of high-speed die opening/closing hydraulic loop as claimed in claim 1 is characterized in that folding mould valve (2) is four four-way proportioning valves or 3-position 4-way proportioning valve; Dynamical system (1) is Constant Pump System or variable pump systems, or the servo power system, and wherein dynamical system (1) pressure export includes non-return valve function.
3. a kind of high-speed die opening/closing hydraulic loop as claimed in claim 1 is characterized in that accumulator system (7) can be comprised of an accumulator and overflow valve, stop valve, also can add overflow valve by a plurality of accumulators, stop valve forms.
4. a kind of high-speed die opening/closing hydraulic loop as claimed in claim 1 is characterized in that safety valve (5) is comprised of the safe inserted valve of band feedback, also can be comprised of common inserted valve or security solenoid valve.
5. a kind of high-speed die opening/closing hydraulic loop as claimed in claim 1, the pressure actuator port that it is characterized in that folding mould valve (2) links to each other with dynamical system (1), the first actuator port of folding mould valve (2) also can link to each other with the rod chamber of folding mould oil cylinder (4), and the second actuator port links to each other with the rodless cavity of folding mould oil cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110326025 CN103042667A (en) | 2011-10-17 | 2011-10-17 | High-speed mould opening-closing hydraulic loop system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110326025 CN103042667A (en) | 2011-10-17 | 2011-10-17 | High-speed mould opening-closing hydraulic loop system |
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| CN103042667A true CN103042667A (en) | 2013-04-17 |
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| CN 201110326025 Pending CN103042667A (en) | 2011-10-17 | 2011-10-17 | High-speed mould opening-closing hydraulic loop system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669569A (en) * | 2015-02-06 | 2015-06-03 | 广州一道注塑机械有限公司 | Hydraulic system of five-point toggle die closing mechanism |
| CN104669576A (en) * | 2015-02-06 | 2015-06-03 | 广州一道注塑机械有限公司 | Method of controlling servo cylinder of five-point pin shaft mode locking mechanism |
| CN105728694A (en) * | 2016-04-27 | 2016-07-06 | 中山市德工机械科技有限公司 | Quick die opening device of die-casting machine |
| CN108127878A (en) * | 2017-12-14 | 2018-06-08 | 西诺控股集团有限公司 | For improving the driving mechanism of injection molding machine open mold speed |
| CN108819179A (en) * | 2018-08-02 | 2018-11-16 | 海天塑机集团有限公司 | A kind of vertical injection blow molding machine open mold oil circuit of external control |
| WO2021031436A1 (en) * | 2019-08-21 | 2021-02-25 | 华澳轮胎设备科技（苏州）股份有限公司 | Differential control mold opening and closing control loop of vulcanizing machine and mold opening and closing control method |
-
2011
- 2011-10-17 CN CN 201110326025 patent/CN103042667A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669569A (en) * | 2015-02-06 | 2015-06-03 | 广州一道注塑机械有限公司 | Hydraulic system of five-point toggle die closing mechanism |
| CN104669576A (en) * | 2015-02-06 | 2015-06-03 | 广州一道注塑机械有限公司 | Method of controlling servo cylinder of five-point pin shaft mode locking mechanism |
| CN105728694A (en) * | 2016-04-27 | 2016-07-06 | 中山市德工机械科技有限公司 | Quick die opening device of die-casting machine |
| CN108127878A (en) * | 2017-12-14 | 2018-06-08 | 西诺控股集团有限公司 | For improving the driving mechanism of injection molding machine open mold speed |
| CN108819179A (en) * | 2018-08-02 | 2018-11-16 | 海天塑机集团有限公司 | A kind of vertical injection blow molding machine open mold oil circuit of external control |
| WO2021031436A1 (en) * | 2019-08-21 | 2021-02-25 | 华澳轮胎设备科技（苏州）股份有限公司 | Differential control mold opening and closing control loop of vulcanizing machine and mold opening and closing control method |
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Application publication date: 20130417 |