CN104085094A - Die opening thimble synchronizing loop of single pump system injection molding machine - Google Patents

Die opening thimble synchronizing loop of single pump system injection molding machine Download PDF

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Publication number
CN104085094A
CN104085094A CN201410218397.1A CN201410218397A CN104085094A CN 104085094 A CN104085094 A CN 104085094A CN 201410218397 A CN201410218397 A CN 201410218397A CN 104085094 A CN104085094 A CN 104085094A
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CN
China
Prior art keywords
loop
thimble
pump
way
valve
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.)
Pending
Application number
CN201410218397.1A
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Chinese (zh)
Inventor
吴小明
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HANGZHOU SHUOBO MATERIALS Co Ltd
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HANGZHOU SHUOBO MATERIALS Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HANGZHOU SHUOBO MATERIALS Co Ltd filed Critical HANGZHOU SHUOBO MATERIALS Co Ltd
Priority to CN201410218397.1A priority Critical patent/CN104085094A/en
Publication of CN104085094A publication Critical patent/CN104085094A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/64Mould opening, closing or clamping devices
    • B29C45/67Mould opening, closing or clamping devices hydraulic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/82Hydraulic or pneumatic circuits

Abstract

The invention relates to the injection molding machine hydraulic system field, and aims to provide a die opening thimble synchronizing loop of a single pump system injection molding machine. The die opening thimble synchronizing loop of a single pump system injection molding machine comprises a hydraulic oil source provided with a single pump, a die locking loop and a thimble loop; and the die locking loop comprises a die locking oil cylinder, a three-position four-way valve of the die locking loop, two two-position four-way valves of the die locking loop, and a unidirectional throttle valve of the die locking loop. Compared with a single pump system of a traditional single pump system injection molding machine, the die opening thimble synchronizing loop has a higher die opening and ejection synchronizing motion efficiency; and compared with a duplex pump system of a duplex pump system injection molding machine, the die opening thimble synchronizing loop has the advantages of simple structure, low cost, small motor power and low energy consumption.

Description

The die sinking thimble synchronization loop of single-pump system injection machine
Technical field
The present invention relates to Hydraulic System for Injection Moulding Machine field, especially a kind of die sinking thimble synchronization loop of single-pump system injection machine.
Background technology
Traditional single-pump system injection machine, single-pump system is due to himself feature, and die sinking and eject and be difficult to synchronization action is subject to certain restrictions the work period of injection machine, and production efficiency is lower, the utility model of China application number CN201320126437.0 discloses a kind of injection moulding machine mould open, ejecting hydraulic circuit, comprise the duplex pump being driven by Oil pump electrical machinery, solenoid directional control valve, check valve, choke valve, electromagnetic relief valve, ejection cylinder and die cylinder, the first oil pump of duplex pump connects proportional flow control valve after check valve, then through reversal valve, arrive the oil-in of die sinking oil cylinder, the oil return opening of die sinking oil cylinder connected tank after reversal valve, on the in-line of die sinking oil cylinder and oil return line, be all parallel with electromagnetic relief valve, the second oil pump of duplex pump is through reversal valve, choke valve is connected to the oil-in of ejection cylinder, the oil return opening of ejection cylinder is through choke valve, connected tank after reversal valve, and on the in-line of ejection cylinder a reversal valve in parallel, a safety overflow valve, an electromagnetic relief valve, the second oil pump also passes through reversal valve, check valve connects proportional flow control valve.Though this utility model can realize injection moulding machine mould open and eject compound action simultaneously, shortens the injection machine work period, but adopts duplex pump system, has complex structure, cost height and the high deficiency of the large energy consumption of power of motor; Therefore, designing the single-pump system of a kind of with traditional single-pump system injection machine compares, die sinking and eject that to realize synchronization action efficiency higher, compare with the duplex pump system of duplex pump system injection machine, the die sinking thimble synchronization loop of the single-pump system injection machine that cost simple in structure is low and the little energy consumption of power of motor is low, becomes problem demanding prompt solution.
Summary of the invention
The object of the invention is to have die sinking and eject that to be difficult to synchronization action efficiency lower in order to overcome the single-pump system of current single-pump system injection machine, there is the deficiency that complex structure cost is high and the large energy consumption of power of motor is high in the duplex pump system of duplex pump system injection machine, provide a kind of single-pump system of single-pump system injection machine to compare, die sinking and eject that to realize synchronization action efficiency higher, compare the die sinking thimble synchronization loop of the single-pump system injection machine that cost simple in structure is low and the little energy consumption of power of motor is low with the duplex pump system of duplex pump system injection machine.
Concrete technical scheme of the present invention is:
A die sinking thimble synchronization loop for single-pump system injection machine, comprises the hydraulic oil source that is provided with single pump, locked loop, thimble loop; Described locked loop comprises Mode-locking oil cylinder, the three-position four-way valve of locked loop, the two-position four-way valve of two locked loops, the one-way throttle valve of locked loop; The first entrance point of the three-position four-way valve of locked loop is connected with the oil-in of hydraulic oil source, the second entrance point of the three-position four-way valve of locked loop is connected with the oil return opening of hydraulic oil source, first port of export of the three-position four-way valve of locked loop is connected with first port of export of first two-position four-way valve of locked loop, and second port of export of the three-position four-way valve of locked loop is connected with the second entrance point of second two-position four-way valve of locked loop; The first entrance point of first two-position four-way valve of locked loop is connected with first entrance point of second two-position four-way valve of locked loop and the entrance point of the one-way throttle valve of locked loop respectively, and the second entrance point of first two-position four-way valve of locked loop is connected with the oil return opening of hydraulic oil source respectively with second port of export; The port of export of the one-way throttle valve of locked loop is connected with the rodless cavity of Mode-locking oil cylinder; Second port of export of second two-position four-way valve of locked loop is connected with the rod chamber of Mode-locking oil cylinder.When the die sinking thimble synchronization loop of this single-pump system injection machine is used, by regulating the working flow of the one-way throttle valve of locked loop, realize the die sinking of single-pump system injection machine and eject synchronization action, compare with traditional single-pump system injection machine, die sinking and eject synchronization action, shorten the injection moulding work period and improved production efficiency, through testing on 160T injection machine, when opening stroke is made as 380mm, 4 sections of medium speed's die sinkings, ejection stroke 140mm, medium while ejecting speed, die sinking thimble synchronization action, than traditional die sinking jacking more on earth, more than the fast 0.6s of top back speed degree, enhance productivity more than 5%-10%, compare with adopting duplex pump system injection machine, have advantages of that cost simple in structure is low and the little energy consumption of power of motor is low.This single-pump system injection machine is compared with the single-pump system of traditional single-pump system injection machine, and die sinking and eject that to realize synchronization action efficiency higher is compared with the duplex pump system of duplex pump system injection machine, and cost simple in structure is low and the little energy consumption of power of motor is low.
As preferably, described thimble loop comprises thimble oil cylinder, the three-position four-way valve in thimble loop; The first entrance point of the three-position four-way valve in thimble loop is connected with the oil-in of hydraulic oil source, the second entrance point of the three-position four-way valve in thimble loop is connected with the oil return opening of hydraulic oil source, first port of export of the three-position four-way valve in thimble loop is connected with the rodless cavity of thimble oil cylinder, and second port of export of the three-position four-way valve in thimble loop is connected with the rodless cavity of thimble oil cylinder.Thimble loop structure is simple and reliable.
As preferably, described thimble loop comprises thimble oil cylinder, the three-position four-way valve in thimble loop, the one-way throttle valve in thimble loop; The first entrance point of the three-position four-way valve in thimble loop is connected with the oil-in of hydraulic oil source, the second entrance point of the three-position four-way valve in thimble loop is connected with the oil return opening of hydraulic oil source, first port of export of the three-position four-way valve in thimble loop is connected with the port of export of the one-way throttle valve in thimble loop, the entrance point of the one-way throttle valve in thimble loop is connected with the rodless cavity of thimble oil cylinder, and second port of export of the three-position four-way valve in thimble loop is connected with the rod chamber of thimble oil cylinder.Thimble loop structure is simple and reliable; The one-way throttle valve in thimble loop coordinates adjusting die sinking and ejects synchronization action better effects if with the one-way throttle valve of locked loop.
As preferably, the latus rectum of the one-way throttle valve of described locked loop is greater than the latus rectum of the one-way throttle valve in thimble loop, and the working flow of the one-way throttle valve of locked loop is 2 times to 4 times of one-way throttle valve working flow in thimble loop; The operating pressure that the one-way throttle valve of locked loop is set is 3 Mpa to 16Mpa.Effect is better.
Compared with prior art, the invention has the beneficial effects as follows: this single-pump system injection machine is compared with the single-pump system of traditional single-pump system injection machine, die sinking and eject that to realize synchronization action efficiency higher, compare with the duplex pump system of duplex pump system injection machine, cost simple in structure is low and the little energy consumption of power of motor is low.The one-way throttle valve in thimble loop coordinates regulating effect better with the one-way throttle valve of locked loop.The one-way throttle valve in thimble loop coordinates adjusting die sinking and ejects synchronization action better effects if with the one-way throttle valve of locked loop.The latus rectum of the one-way throttle valve of locked loop is greater than the latus rectum of the one-way throttle valve in thimble loop, and the working flow of the one-way throttle valve of locked loop is 2 times to 4 times of one-way throttle valve working flow in thimble loop; The operating pressure that the one-way throttle valve of locked loop is set is 3 Mpa to 16Mpa, realizes synchronization action effect better.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention.
In figure: second two-position four-way valve-6 of first two-position four-way valve-5 of Mode-locking oil cylinder-1, hydraulic oil source-2, single pump-21, three-position four-way valve-3 of locked loop, one-way throttle valve-4 of locked loop, locked loop, locked loop, thimble oil cylinder-7, one-way throttle valve-9 in three-position four-way valve-8 in thimble loop, thimble loop.
the specific embodiment
Below in conjunction with shown in accompanying drawing, the present invention is described further.
As shown in Figure 1: a kind of die sinking thimble synchronization loop of single-pump system injection machine, comprises the hydraulic oil source 2 that is provided with single pump 21, locked loop, thimble loop; Described locked loop comprises Mode-locking oil cylinder 1, the two-position four-way valve of 3, two locked loops of three-position four-way valve of locked loop, the one-way throttle valve 4 of locked loop; The first entrance point of the three-position four-way valve 3 of locked loop is connected with the oil-in of hydraulic oil source 2, the second entrance point of the three-position four-way valve 3 of locked loop is connected with the oil return opening of hydraulic oil source 2, first port of export of the three-position four-way valve 3 of locked loop is connected with first port of export of first two-position four-way valve 5 of locked loop, and second port of export of the three-position four-way valve 3 of locked loop is connected with the second entrance point of second two-position four-way valve 6 of locked loop; The first entrance point of first two-position four-way valve 5 of locked loop is connected with first entrance point of second two-position four-way valve 6 of locked loop and the entrance point of the one-way throttle valve 4 of locked loop respectively, and the second entrance point of first two-position four-way valve 5 of locked loop is connected with the oil return opening of hydraulic oil source 2 respectively with second port of export; The port of export of the one-way throttle valve 4 of locked loop is connected with the rodless cavity of Mode-locking oil cylinder 1; Second port of export of second two-position four-way valve 6 of locked loop is connected with the rod chamber of Mode-locking oil cylinder 1.
Described thimble loop comprises thimble oil cylinder 7, the three-position four-way valve 8 in thimble loop; The first entrance point of the three-position four-way valve 8 in thimble loop is connected with the oil-in of hydraulic oil source 2, the second entrance point of the three-position four-way valve 8 in thimble loop is connected with the oil return opening of hydraulic oil source 2, first port of export of the three-position four-way valve 8 in thimble loop is connected with the rodless cavity of thimble oil cylinder 7, and second port of export of the three-position four-way valve 8 in thimble loop is connected with the rodless cavity of thimble oil cylinder 7.
Described thimble loop comprises thimble oil cylinder 7, the three-position four-way valve 8 in thimble loop, the one-way throttle valve 9 in thimble loop; The first entrance point of the three-position four-way valve 8 in thimble loop is connected with the oil-in of hydraulic oil source 2, the second entrance point of the three-position four-way valve 8 in thimble loop is connected with the oil return opening of hydraulic oil source 2, first port of export of the three-position four-way valve 8 in thimble loop is connected with the port of export of the one-way throttle valve 9 in thimble loop, the entrance point of the one-way throttle valve 9 in thimble loop is connected with the rodless cavity of thimble oil cylinder 7, and second port of export of the three-position four-way valve 8 in thimble loop is connected with the rod chamber of thimble oil cylinder 7.
The latus rectum of the one-way throttle valve 4 of described locked loop is greater than the latus rectum of the one-way throttle valve 9 in thimble loop, and the working flow of the one-way throttle valve 4 of locked loop is 3 times of one-way throttle valve 9 working flows in thimble loop; The operating pressure that the one-way throttle valve 4 of locked loop is set is 12Mpa.
The one-way throttle valve 4 of described locked loop can be also one-way overflow valve, and the one-way throttle valve 9 in thimble loop can be also one way pressure-reducing valve or one-way overflow valve.
When the die sinking thimble synchronization loop of this single-pump system injection machine is used, by regulating respectively the working flow of the one-way throttle valve 4 of locked loop and the one-way throttle valve 9 in thimble loop, realize the die sinking of single-pump system injection machine and eject synchronization action, compare with traditional single-pump system injection machine, die sinking and eject synchronization action, shorten the injection moulding work period and improved production efficiency, through testing on 160T injection machine, when opening stroke is made as 380mm, 4 sections of medium speed's die sinkings, ejection stroke 140mm, medium while ejecting speed, die sinking thimble synchronization action, than traditional die sinking jacking more on earth, more than the fast 0.6s of top back speed degree, enhance productivity more than 5%-10%, compare with adopting duplex pump system injection machine, have advantages of that cost simple in structure is low and the little energy consumption of power of motor is low.
The invention has the beneficial effects as follows: this single-pump system injection machine is compared with the single-pump system of traditional single-pump system injection machine, die sinking and eject that to realize synchronization action efficiency higher, compare with the duplex pump system of duplex pump system injection machine, cost simple in structure is low and the little energy consumption of power of motor is low.The one-way throttle valve in thimble loop coordinates regulating effect better with the one-way throttle valve of locked loop.The one-way throttle valve in thimble loop coordinates adjusting die sinking and ejects synchronization action better effects if with the one-way throttle valve of locked loop.The latus rectum of the one-way throttle valve of locked loop is greater than the latus rectum of the one-way throttle valve in thimble loop, and the working flow of the one-way throttle valve of locked loop is 3 times of one-way throttle valve working flow in thimble loop; The operating pressure that the one-way throttle valve of locked loop is set is 12Mpa, realizes synchronization action effect better.
It is apparent to one skilled in the art that the present invention can change into various ways; by the one-way throttle valve of adjusting on locked loop, obtain the stable pressure versus flow that ejects loop; no matter be tubular type, board-like, the such change of plug-in is not thought and is departed from the scope of the present invention.All so apparent modifications of the technical staff to described field, within being included in the scope of this claim.

Claims (4)

1. a die sinking thimble synchronization loop for single-pump system injection machine, comprises the hydraulic oil source that is provided with single pump, locked loop, thimble loop; It is characterized in that: described locked loop comprises Mode-locking oil cylinder the three-position four-way valve of locked loop, the two-position four-way valve of two locked loops, the one-way throttle valve of locked loop; The first entrance point of the three-position four-way valve of locked loop is connected with the oil-in of hydraulic oil source, the second entrance point of the three-position four-way valve of locked loop is connected with the oil return opening of hydraulic oil source, first port of export of the three-position four-way valve of locked loop is connected with first port of export of first two-position four-way valve of locked loop, and second port of export of the three-position four-way valve of locked loop is connected with the second entrance point of second two-position four-way valve of locked loop; The first entrance point of first two-position four-way valve of locked loop is connected with first entrance point of second two-position four-way valve of locked loop and the entrance point of the one-way throttle valve of locked loop respectively, and the second entrance point of first two-position four-way valve of locked loop is connected with the oil return opening of hydraulic oil source respectively with second port of export; The port of export of the one-way throttle valve of locked loop is connected with the rodless cavity of Mode-locking oil cylinder; Second port of export of second two-position four-way valve of locked loop is connected with the rod chamber of Mode-locking oil cylinder.
2. the die sinking thimble synchronization loop of single-pump system injection machine according to claim 1, is characterized in that: described thimble loop comprises thimble oil cylinder, the three-position four-way valve in thimble loop; The first entrance point of the three-position four-way valve in thimble loop is connected with the oil-in of hydraulic oil source, the second entrance point of the three-position four-way valve in thimble loop is connected with the oil return opening of hydraulic oil source, first port of export of the three-position four-way valve in thimble loop is connected with the rodless cavity of thimble oil cylinder, and second port of export of the three-position four-way valve in thimble loop is connected with the rodless cavity of thimble oil cylinder.
3. the die sinking thimble synchronization loop of single-pump system injection machine according to claim 1, is characterized in that: described thimble loop comprises thimble oil cylinder the three-position four-way valve in thimble loop, the one-way throttle valve in thimble loop; The first entrance point of the three-position four-way valve in thimble loop is connected with the oil-in of hydraulic oil source, the second entrance point of the three-position four-way valve in thimble loop is connected with the oil return opening of hydraulic oil source, first port of export of the three-position four-way valve in thimble loop is connected with the port of export of the one-way throttle valve in thimble loop, the entrance point of the one-way throttle valve in thimble loop is connected with the rodless cavity of thimble oil cylinder, and second port of export of the three-position four-way valve in thimble loop is connected with the rod chamber of thimble oil cylinder.
4. the die sinking thimble synchronization loop of the single-pump system injection machine described in claim 1 or 3, it is characterized in that: the latus rectum of the one-way throttle valve of described locked loop is greater than the latus rectum of the one-way throttle valve in thimble loop, the working flow of the one-way throttle valve of locked loop is 2 times to 4 times of one-way throttle valve working flow in thimble loop; The operating pressure that the one-way throttle valve of locked loop is set is 3 Mpa to 16Mpa.
CN201410218397.1A 2014-05-22 2014-05-22 Die opening thimble synchronizing loop of single pump system injection molding machine Pending CN104085094A (en)

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CN201410218397.1A CN104085094A (en) 2014-05-22 2014-05-22 Die opening thimble synchronizing loop of single pump system injection molding machine

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CN201410218397.1A CN104085094A (en) 2014-05-22 2014-05-22 Die opening thimble synchronizing loop of single pump system injection molding machine

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819184A (en) * 2015-03-27 2015-08-05 深圳大学 Action separation or linkage control switching method of die sinking and pin ejecting technology
CN105538624A (en) * 2016-01-25 2016-05-04 海天塑机集团有限公司 Mould clamping system for injection molding machine and oil way control method for mould clamping system for injection molding machine
CN109203400A (en) * 2017-07-07 2019-01-15 云南科威液态金属谷研发有限公司 A kind of hydraulic system of injection molding machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2931073Y (en) * 2006-04-29 2007-08-08 余姚市奥斯机电有限公司 Hydraulic equipment for double-pump double-proportion injection machine
CN201300529Y (en) * 2008-11-28 2009-09-02 常州市龙盛机械有限公司 Open mold-ejection hydraulic circuit of injection machine
CN102672925A (en) * 2011-03-15 2012-09-19 博创机械股份有限公司 Open/close mold hydraulic loop system with mold protection
CN203863970U (en) * 2014-05-22 2014-10-08 杭州硕博物资有限公司 Mould unloading ejector pin synchronizing circuit for injection molding machine with single-pump system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2931073Y (en) * 2006-04-29 2007-08-08 余姚市奥斯机电有限公司 Hydraulic equipment for double-pump double-proportion injection machine
CN201300529Y (en) * 2008-11-28 2009-09-02 常州市龙盛机械有限公司 Open mold-ejection hydraulic circuit of injection machine
CN102672925A (en) * 2011-03-15 2012-09-19 博创机械股份有限公司 Open/close mold hydraulic loop system with mold protection
CN203863970U (en) * 2014-05-22 2014-10-08 杭州硕博物资有限公司 Mould unloading ejector pin synchronizing circuit for injection molding machine with single-pump system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819184A (en) * 2015-03-27 2015-08-05 深圳大学 Action separation or linkage control switching method of die sinking and pin ejecting technology
CN105538624A (en) * 2016-01-25 2016-05-04 海天塑机集团有限公司 Mould clamping system for injection molding machine and oil way control method for mould clamping system for injection molding machine
CN109203400A (en) * 2017-07-07 2019-01-15 云南科威液态金属谷研发有限公司 A kind of hydraulic system of injection molding machine

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Application publication date: 20141008