CN203937141U - A kind of hydraulic system of thin-walled cutlery box special injection molding - Google Patents
A kind of hydraulic system of thin-walled cutlery box special injection molding Download PDFInfo
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- CN203937141U CN203937141U CN201420163446.1U CN201420163446U CN203937141U CN 203937141 U CN203937141 U CN 203937141U CN 201420163446 U CN201420163446 U CN 201420163446U CN 203937141 U CN203937141 U CN 203937141U
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- solenoid directional
- fluid port
- directional control
- way solenoid
- hydraulic fluid
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Abstract
The utility model relates to a kind of hydraulic system of thin-walled cutlery box special injection molding, comprises gear pump, constant flow paddle pump and shuttle valve, and gear pump one end is connected with fuel tank after 3-position 4-way solenoid directional control valve I, two-way quantitative hydraulic motor; Gear pump one end is connected with fuel tank after 3-position 4-way solenoid directional control valve II, die cylinder; Gear pump one end is connected with fuel tank after 3-position 4-way solenoid directional control valve III, ejection cylinder, and constant flow paddle pump one end is connected with fuel tank after two-position four-way solenoid directional control valve I, nozzle oil cylinder; Gear pump one end through 3-position 4-way solenoid directional control valve IV, penetrate after moving oil cylinder and be connected with fuel tank; Gear pump one end is connected with fuel tank after 3-position 4-way solenoid directional control valve V, injection cylinder; Constant flow paddle pump one end is connected with fuel tank after preformed loop I, unidirectional constant displacement hydraulic motor.The utility model can guarantee that first mould assembling action and the action of second preformed carry out simultaneously, and then shortens the molding cycle of product, saves the stand-by period of product.
Description
Technical field
The utility model relates to hydraulic system field, particularly relates to a kind of hydraulic system of thin-walled cutlery box special injection molding.
Background technology
PP thin-walled cutlery box, because of features such as its safety and sanitation, practical, energy-conserving and environment-protective, has the trend that replaces gradually expanded material or paper meal.Because this product has wide market, so the special-purpose injector of this production is also competitively released.The manufacturing technology difficulty of the special-purpose injector of the thin-walled cutlery box of this high-speed and energy-saving is large, cost is high, and its market is monopolized by external several major companies.The equipment of current domestic release is mainly done simple improvement on normal injection machine, although price is not high, production efficiency is low, and machine energy consumption is higher.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of hydraulic system of thin-walled cutlery box special injection molding, can guarantee that first mould assembling action and the action of second preformed carry out simultaneously, and then shorten the molding cycle of product, saves the stand-by period of product.
The utility model solves the technical scheme that its technical problem adopts: the hydraulic system that a kind of thin-walled cutlery box special injection molding is provided, comprise gear pump, constant flow paddle pump and shuttle valve, by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve I is connected with fuel tank after T hydraulic fluid port with the B hydraulic fluid port of A hydraulic fluid port, two-way quantitative hydraulic motor, 3-position 4-way solenoid directional control valve I in described gear pump one end;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve II is connected with the left chamber of die cylinder after A hydraulic fluid port in described gear pump one end, and by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve II is connected with fuel tank after T hydraulic fluid port, choke valve II in the right chamber of this die cylinder;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve III is connected with the left chamber of ejection cylinder after A hydraulic fluid port in described gear pump one end, by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve III is connected with fuel tank after T hydraulic fluid port in the right chamber of this ejection cylinder
By check valve I, the P hydraulic fluid port through choke valve I, check valve III, stack pressure-reducing valve, two-position four-way solenoid directional control valve I is connected with the right chamber of nozzle oil cylinder after A hydraulic fluid port in described constant flow paddle pump one end, and by pipeline, the B hydraulic fluid port through two-position four-way solenoid directional control valve I is connected with fuel tank after T hydraulic fluid port in the left chamber of this nozzle oil cylinder;
Described gear pump one end is also connected with two right chambeies of moving oil cylinder of penetrating side by side through the P hydraulic fluid port of check valve IV, 3-position 4-way solenoid directional control valve IV by pipeline after A hydraulic fluid port, and this is penetrated and moves the left chamber of oil cylinder the B hydraulic fluid port through 3-position 4-way solenoid directional control valve IV is connected with fuel tank after T hydraulic fluid port by pipeline;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve V is connected with the left chamber of two injection cylinders side by side after A hydraulic fluid port in described gear pump one end, and by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve V is connected with fuel tank after T hydraulic fluid port in the right chamber of this injection cylinder;
Described constant flow paddle pump one end is connected with fuel tank after preformed loop I, unidirectional constant displacement hydraulic motor by check valve I, and described shuttle valve, between gear pump and constant flow paddle pump, is controlled two system pressures.
One end of described gear pump is connected with fuel tank after pressure-control circuit I by pipeline, and described pressure-control circuit I is inner forms oil circuit loop by overflow plug-in unit I and precursor overflow valve I.
One end of described constant flow paddle pump is connected with fuel tank respectively by check valve I after subsidiary loop, check valve II, pressure-control circuit I, and described subsidiary loop is inner forms oil circuit loop by direction plug-in unit I and choke valve III.
Described preformed loop I is inner forms oil circuit loop by direction plug-in unit II, choke valve IV, 3-position 4-way solenoid directional control valve VI and choke valve V.
Described die cylinder Yi road pipeline is connected with choke valve II through two-position four-way solenoid directional control valve II, two-position four-way solenoid directional control valve III.
Another road pipeline of the oil circuit outlet of described preformed loop I is connected with fuel tank after the II of preformed loop, and described preformed loop II is inner forms oil circuit loop by overflow plug-in unit II, choke valve VI, two-position four-way solenoid directional control valve IV and precursor overflow valve II.
One end of described constant flow paddle pump is connected with fuel tank after pressure-control circuit II by pipeline, and described pressure-control circuit II inside is respectively by being connected with fuel tank after overflow plug-in unit III, choke valve VII, proportional pressure valve; By overflow plug-in unit III, choke valve VII, two-position four-way solenoid directional control valve V, stack overflow valve, form oil circuit loop.
Between described two-position four-way solenoid directional control valve I and stack pressure-reducing valve, injection cylinder one side, overflow plug-in unit III one side, 3-position 4-way solenoid directional control valve V one side all arrange and be connected with Pressure gauge.
One end of described gear pump and constant flow paddle pump is connected with Constant Pump System with servo-drive system respectively.
beneficial effect
The utility model relates to a kind of hydraulic system of thin-walled cutlery box special injection molding, can guarantee that first mould assembling action and the action of second preformed carry out simultaneously, and then shorten the molding cycle of product, saves the stand-by period of product.
Accompanying drawing explanation
Fig. 1 is system circuit schematic diagram of the present utility model;
Fig. 2 is flow chart of the present utility model.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1-2, embodiment of the present utility model relates to a kind of hydraulic system of thin-walled cutlery box special injection molding, comprise gear pump 1, constant flow paddle pump 2 and shuttle valve 39, by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve I 6 is connected with fuel tank after T hydraulic fluid port with the B hydraulic fluid port of A hydraulic fluid port, two-way quantitative hydraulic motor 7,3-position 4-way solenoid directional control valve I 6 in described gear pump 1 one end;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve II 8 is connected with the left chamber of die cylinder 9 after A hydraulic fluid port in described gear pump 1 one end, and by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve II 8 is connected with fuel tank after T hydraulic fluid port, choke valve II 27 in the right chamber of this die cylinder 9;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve III 10 is connected with the left chamber of ejection cylinder 11 after A hydraulic fluid port in described gear pump 1 one end, by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve III 10 is connected with fuel tank after T hydraulic fluid port in the right chamber of this ejection cylinder 11
By check valve I 12, the P hydraulic fluid port through choke valve I 15, check valve III 16, stack pressure-reducing valve 17, two-position four-way solenoid directional control valve I 18 is connected with the right chamber of nozzle oil cylinder 19 after A hydraulic fluid port in described constant flow paddle pump 2 one end, and by pipeline, the B hydraulic fluid port through two-position four-way solenoid directional control valve I 18 is connected with fuel tank after T hydraulic fluid port in the left chamber of this nozzle oil cylinder 19;
Described gear pump 1 one end is also connected with two right chambeies of moving oil cylinder 22 of penetrating side by side through the P hydraulic fluid port of check valve IV 20,3-position 4-way solenoid directional control valve IV 21 by pipeline after A hydraulic fluid port, and this is penetrated and moves the left chamber of oil cylinder 22 the B hydraulic fluid port through 3-position 4-way solenoid directional control valve IV 21 is connected with fuel tank after T hydraulic fluid port by pipeline;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve V 23 is connected with the left chamber of two injection cylinders 24 side by side after A hydraulic fluid port in described gear pump 1 one end, and by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve V 23 is connected with fuel tank after T hydraulic fluid port in the right chamber of this injection cylinder 24;
Described constant flow paddle pump 2 one end are connected with fuel tank after preformed loop I 48, unidirectional constant displacement hydraulic motor 26 by check valve I 12, and described shuttle valve 39, between gear pump 1 and constant flow paddle pump 2, is controlled two system pressures.
One end of described gear pump 1 is connected with fuel tank after pressure-control circuit I 46 by pipeline, and described pressure-control circuit I 46 is inner forms oil circuit loop by overflow plug-in unit I 5 and precursor overflow valve I 28.
One end of described constant flow paddle pump 2 is connected with fuel tank respectively by check valve I 12 after subsidiary loop 47, check valve II 14, pressure-control circuit I 46, and described subsidiary loop 47 is inner forms oil circuit loop by direction plug-in unit I 13 and choke valve III 29.
Described preformed loop I 48 is inner forms oil circuit loop by direction plug-in unit II 25, choke valve IV 30,3-position 4-way solenoid directional control valve VI 31 and choke valve V 32.
Described die cylinder 9 Yi road pipelines are connected with choke valve II 27 through two-position four-way solenoid directional control valve II 33, two-position four-way solenoid directional control valve III 34.
Another road pipeline of the oil circuit outlet of described preformed loop I 48 is connected with fuel tank after preformed loop II 49, and described preformed loop II 49 is inner forms oil circuit loop by overflow plug-in unit II 35, choke valve VI 36, two-position four-way solenoid directional control valve IV 37 and precursor overflow valve II 38.
One end of described constant flow paddle pump 2 is connected with fuel tank after pressure-control circuit II 50 by pipeline, and described pressure-control circuit II 50 inside are respectively by being connected with fuel tank after overflow plug-in unit III 40, choke valve VII 41, proportional pressure valve 44; By overflow plug-in unit III 40, choke valve VII 41, two-position four-way solenoid directional control valve V 42, stack overflow valve 43, form oil circuit loop.
Between described two-position four-way solenoid directional control valve I 18 and stack pressure-reducing valve 17, injection cylinder 24 1 sides, overflow plug-in unit III 40 1 sides, 3-position 4-way solenoid directional control valve V 23 1 sides all arrange and are connected with Pressure gauge 45.
One end of described gear pump 1 and constant flow paddle pump 2 is connected with Constant Pump System 4 with servo-drive system 3 respectively.
Embodiment 1
Before mold injects, open gear pump 1, first carry out mode transfer operation: the rotating of two-way quantitative hydraulic motor 7 is controlled in left position and right position by 3-position 4-way solenoid directional control valve I 6, thereby carries out mode transfer work; Equally, before mold injects, starter receiver pump 1, also penetrate and move operation: the left position by 3-position 4-way solenoid directional control valve IV 21 and right control two side by side penetrate the protracting and retreat of piston rod of moving oil cylinder 22, thereby penetrate the work of moving.
Deng mode transfer work with penetrate after the work of moving is all ready to, open constant flow paddle pump 2, by oil line pipe, arrive unidirectional constant displacement hydraulic motor 26, carry out preformed action; By the left position of two-position four-way solenoid directional control valve I 18 and protracting and retreating of right piston rod that carrys out Control Nozzle oil cylinder 19, the opening and closing movement of Control Nozzle, for next step injection work is prepared; Now servo-drive system 3 and Constant Pump System 4 are worked simultaneously, and protracting and retreating of the piston rod of controlling two injection cylinders 24 side by side by left position and the right position of 3-position 4-way solenoid directional control valve V 23, injects; Next be exactly that servo-drive system 3 is by the left position of 3-position 4-way solenoid directional control valve II 8 and protracting and retreating of right the piston rod of controlling die cylinder 9, carry out mould assembling action, wherein also by the action of two-position four-way solenoid directional control valve II 33 and two-position four-way solenoid directional control valve III 34, assist mould assembling action; Protracting and retreating of the piston rod of controlling ejection cylinder 11 by left position and the right position of 3-position 4-way solenoid directional control valve III 10, ejects action, completes the stripping process of mould.When 1 pair of mould assembling action of gear pump has just started, constant flow paddle pump 2 starts again the action of next preformed, guarantees that first mould assembling action and second preformed action carry out simultaneously, has saved the time.
This system is carried out the clossing pressure of directions plug-in unit I 13 and direction plug-in unit II 25 by shuttle valve 39, by shuttle valve 39, guarantee to select maximum pressure in servo-drive system and this two edge system of Constant Pump System to withstand direction plug-in unit spool, make direction plug-in unit I 13 and direction plug-in unit II 25 reach absoluteness closure: when system start injection moves, by 3-position 4-way solenoid directional control valve VI 31 opening direction plug-in unit I 13, closing direction plug-in unit II 25 simultaneously; When system starts preformed action, by 3-position 4-way solenoid directional control valve VI 31 opening direction plug-in unit II 25, closing direction plug-in unit I 13 simultaneously.
The safe pressure of the servo-drive system of the precursor overflow valve I 28 control gear pumps 1 in pressure-control circuit I 46; Stack overflow valve 43 in pressure-control circuit II 50 is controlled the security of system pressure of constant flow paddle pump 2 by the position, left and right of two-position four-way solenoid directional control valve V 42, proportional pressure valve 44 wherein provides the ratio pressure of system; Two-position four-way solenoid directional control valve IV 37 in preformed loop II 49 is controlled precursor overflow valve II 38 provides preformed back pressure.
Claims (9)
1. the hydraulic system of a thin-walled cutlery box special injection molding, comprise gear pump (1), constant flow paddle pump (2) and shuttle valve (39), it is characterized in that: the P hydraulic fluid port through 3-position 4-way solenoid directional control valve I (6) is connected with fuel tank after T hydraulic fluid port with the B hydraulic fluid port of A hydraulic fluid port, two-way quantitative hydraulic motor (7), 3-position 4-way solenoid directional control valve I (6) by pipeline in described gear pump (1) one end;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve II (8) is connected with the left chamber of die cylinder (9) after A hydraulic fluid port in described gear pump (1) one end, and by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve II (8) is connected with fuel tank after (27) with T hydraulic fluid port, choke valve II in the right chamber of this die cylinder (9);
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve III (10) is connected with the left chamber of ejection cylinder (11) after A hydraulic fluid port in described gear pump (1) one end, by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve III (10) is connected with fuel tank after T hydraulic fluid port in the right chamber of this ejection cylinder (11)
By check valve I (12), the P hydraulic fluid port through choke valve I (15), check valve III (16), stack pressure-reducing valve (17), two-position four-way solenoid directional control valve I (18) is connected with the right chamber of nozzle oil cylinder (19) after A hydraulic fluid port in described constant flow paddle pump (2) one end, and by pipeline, the B hydraulic fluid port through two-position four-way solenoid directional control valve I (18) is connected with fuel tank after T hydraulic fluid port in the left chamber of this nozzle oil cylinder (19);
Described gear pump (1) one end is also connected with two right chambeies of moving oil cylinder (22) of penetrating side by side through the P hydraulic fluid port of check valve IV (20), 3-position 4-way solenoid directional control valve IV (21) by pipeline after A hydraulic fluid port, and this is penetrated and moves the left chamber of oil cylinder (22) the B hydraulic fluid port through 3-position 4-way solenoid directional control valve IV (21) is connected with fuel tank after T hydraulic fluid port by pipeline;
Also by pipeline, the P hydraulic fluid port through 3-position 4-way solenoid directional control valve V (23) is connected with the left chamber of two injection cylinders (24) side by side after A hydraulic fluid port in described gear pump (1) one end, and by pipeline, the B hydraulic fluid port through 3-position 4-way solenoid directional control valve V (23) is connected with fuel tank after T hydraulic fluid port in the right chamber of this injection cylinder (24);
Described constant flow paddle pump (2) one end is connected with fuel tank after (26) through preformed loop I (48), unidirectional constant displacement hydraulic motor by check valve I (12), described shuttle valve (39) is positioned between gear pump (1) and constant flow paddle pump (2), controls two system pressures.
2. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 1, it is characterized in that: one end of described gear pump (1) is connected with fuel tank after pressure-control circuit I (46) by pipeline, described pressure-control circuit I (46) is inner forms oil circuit loop by overflow plug-in unit I (5) and precursor overflow valve I (28).
3. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 1, it is characterized in that: one end of described constant flow paddle pump (2) is connected with fuel tank after (46) through subsidiary loop (47), check valve II (14), pressure-control circuit I respectively by check valve I (12), described subsidiary loop (47) is inner forms oil circuit loop by direction plug-in unit I (13) and choke valve III (29).
4. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 1, is characterized in that: described preformed loop I (48) is inner forms oil circuit loop by direction plug-in unit II (25), choke valve IV (30), 3-position 4-way solenoid directional control valve VI (31) and choke valve V (32).
5. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 1, is characterized in that: described die cylinder (9) Yi road pipeline is connected with choke valve II (27) through two-position four-way solenoid directional control valve II (33), two-position four-way solenoid directional control valve III (34).
6. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 1, it is characterized in that: another road pipeline of the oil circuit outlet of described preformed loop I (48) is connected with fuel tank after preformed loop II (49), described preformed loop II (49) is inner forms oil circuit loop by overflow plug-in unit II (35), choke valve VI (36), two-position four-way solenoid directional control valve IV (37) and precursor overflow valve II (38).
7. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 1, it is characterized in that: one end of described constant flow paddle pump (2) is connected with fuel tank after pressure-control circuit II (50) by pipeline, described pressure-control circuit II (50) inside is connected with fuel tank after (44) by overflow plug-in unit III (40), choke valve VII (41), proportional pressure valve respectively; By overflow plug-in unit III (40), choke valve VII (41), two-position four-way solenoid directional control valve V (42), stack overflow valve (43), form oil circuit loop.
8. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 7, is characterized in that: between described two-position four-way solenoid directional control valve I (18) and stack pressure-reducing valve (17), injection cylinder (24) one sides, overflow plug-in unit III (40) one sides, 3-position 4-way solenoid directional control valve V (23) one sides all arrange and be connected with Pressure gauge (45).
9. the hydraulic system of a kind of thin-walled cutlery box special injection molding according to claim 1, is characterized in that: one end of described gear pump (1) and constant flow paddle pump (2) is connected with Constant Pump System (4) with servo-drive system (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163446.1U CN203937141U (en) | 2014-04-04 | 2014-04-04 | A kind of hydraulic system of thin-walled cutlery box special injection molding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420163446.1U CN203937141U (en) | 2014-04-04 | 2014-04-04 | A kind of hydraulic system of thin-walled cutlery box special injection molding |
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| CN203937141U true CN203937141U (en) | 2014-11-12 |
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| CN201420163446.1U Expired - Fee Related CN203937141U (en) | 2014-04-04 | 2014-04-04 | A kind of hydraulic system of thin-walled cutlery box special injection molding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443699A (en) * | 2017-09-11 | 2017-12-08 | 泉州市世创机械制造有限公司 | A kind of PVC injectors hydraulic control system and its control method |
| CN109719917A (en) * | 2019-03-07 | 2019-05-07 | 安徽江澜智能装备有限公司 | A kind of thin-walled pressure vessel special injection molding synchronization oil piping system |
| CN114311580A (en) * | 2021-12-31 | 2022-04-12 | 宁波市海达塑料机械有限公司 | Injection molding machine pre-molding backpressure switching valve block |
-
2014
- 2014-04-04 CN CN201420163446.1U patent/CN203937141U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443699A (en) * | 2017-09-11 | 2017-12-08 | 泉州市世创机械制造有限公司 | A kind of PVC injectors hydraulic control system and its control method |
| CN107443699B (en) * | 2017-09-11 | 2024-01-02 | 泉州市世创机械制造有限公司 | PVC (polyvinyl chloride) injection machine hydraulic control system and control method thereof |
| CN109719917A (en) * | 2019-03-07 | 2019-05-07 | 安徽江澜智能装备有限公司 | A kind of thin-walled pressure vessel special injection molding synchronization oil piping system |
| CN114311580A (en) * | 2021-12-31 | 2022-04-12 | 宁波市海达塑料机械有限公司 | Injection molding machine pre-molding backpressure switching valve block |
| CN114311580B (en) * | 2021-12-31 | 2024-02-02 | 宁波市海达塑料机械有限公司 | Injection molding machine pre-molding back pressure conversion valve block |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20150404 |
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| EXPY | Termination of patent right or utility model |