CN106042312A - Pre-injection-molding foaming proportion injection machine - Google Patents

Pre-injection-molding foaming proportion injection machine Download PDF

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Publication number
CN106042312A
CN106042312A CN201610525561.2A CN201610525561A CN106042312A CN 106042312 A CN106042312 A CN 106042312A CN 201610525561 A CN201610525561 A CN 201610525561A CN 106042312 A CN106042312 A CN 106042312A
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CN
China
Prior art keywords
oil
injection
way valve
valve
feeding
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.)
Granted
Application number
CN201610525561.2A
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Chinese (zh)
Other versions
CN106042312B (en
Inventor
江文中
林小东
林小峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruian Xingzhong Industrial Co. Ltd.
Original Assignee
Ruian Xingzhong Leather Machinery 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 Ruian Xingzhong Leather Machinery Co Ltd filed Critical Ruian Xingzhong Leather Machinery Co Ltd
Priority to CN201610525561.2A priority Critical patent/CN106042312B/en
Publication of CN106042312A publication Critical patent/CN106042312A/en
Application granted granted Critical
Publication of CN106042312B publication Critical patent/CN106042312B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76595—Velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76859—Injection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76929—Controlling method
    • B29C2945/76956—Proportional

Abstract

The invention discloses a pre-injection-molding foaming proportion injection machine. The pre-injection-molding foaming proportion injection machine is characterized in that a hydraulic loop comprises a first oil pump driven by a motor and a second oil pump driven by the motor, output oil of the first oil pump is divided into three paths through a single-proportion overflow valve or double-proportion overflow valve to be communicated with a three-position four-way valve V1, a three-position four-way valve V2 and a three-position four-way valve V3, two oil outlets of the three-position four-way valve V1 are communicated with a front oil inlet and a rear oil inlet of an injection seat oil cylinder, one oil outlet of the three-position four-way valve V2 is communicated with a front oil inlet of an injection return oil cylinder, and the other oil outlet of the three-position four-way valve V2 is communicated with a rear oil inlet of the injection return oil cylinder through a backpressure valve; two oil outlets of the three-position four-way valve V3 are communicated with an upper oil inlet and a lower oil inlet of a feeding reverse oil motor; output oil of the second oil pump passes through a one-way valve and then is communicated with the double-proportion overflow valve, and an electromagnetic overflow valve is arranged on an oil outlet pipeline, in front of the one-way valve, of the second oil pump; and pressure speed automatic control in the pre-injection-molding foaming injection process can be achieved, operation is easy and convenient, a system can stably work, accuracy and uniformity of injection density are better ensured, and the injection quality is improved.

Description

Preformed foaming proportion injection machine
Technical field
The present invention relates to the improvement invention of a kind of injector.
Background technology
The injector (also known as injection machine) of prior art, to complete injection, penetrate and move back and back pressure during preformed foaming injection Deng action, these hydraulic circuits being required for by injector are controlled, and the most just have applicant on August 6th, 2002 The patent No. 02136409.5, the patent of invention of patent name " the injection moulding machine preforms, injection hydraulic circuit " are applied for.But, existing Technology includes the injector hydraulic circuit of above-mentioned patented technology, all can not realize the pressure during preformed foaming injection and speed Automatically control, operate the work of the easiest, system also unstable, therefore it cannot be guaranteed that injection density accurately and uniformly, injection Second-rate.
Summary of the invention
The deficiency existed in view of background technology, the purpose of the present invention is intended to provide a kind of pressure realized in injection process Power speed automatically controls, easy and simple to handle, system working stability, more preferably ensures that the accurate of injection density, with uniformly, improves injection matter The preformed foaming proportion injection machine of amount.
The present invention implements by following technical solution:
Preformed foaming proportion injection machine, including hydraulic circuit, penetrate seat, penetrating on seat install injection return oil cylinder, feeding barrel Inverting oil motor with pan feeding, penetrate seat by penetrating an oil cylinder pushing and carry out fore-aft motion, feeding spiro rod is rotatably located in feeding barrel Being driven by pan feeding reversion oil motor and rotate, feeding spiro rod can move forward and backward in feeding barrel, and pan feeding reversion oil motor exists Driving feeding spiro rod to carry out backward movement during reversion, feeding spiro rod retreats moving ahead after putting in place and is pushed away by injection return oil cylinder It is dynamic, it is characterised in that: hydraulic circuit includes motor-driven first oil pump and the second oil pump, and first, second oil pump is arranged in parallel, First oil pump fuel-displaced be divided into after digital ratio equation overflow valve or double proportional pressure control valve three tunnels be respectively turned on three-position four-way valve V1, V2 and One oil-out of V3, three-position four-way valve V1 connects the front oil-in penetrating an oil cylinder, and another oil-out is connected and penetrated an oil cylinder Rear oil-in, an oil-out connection injection of three-position four-way valve V2 returns the front oil-in of oil cylinder, and another oil-out passes through Counterbalance valve is connected injection and is returned the rear oil-in of oil cylinder, and an oil-out of three-position four-way valve V3 connects pan feeding reversion oil motor Upper oil-in, another oil-out connects the lower oil-in of pan feeding reversion oil motor；The fuel-displaced of second oil pump is followed by through check valve Logical double proportional pressure control valve, the second oil pump outlet line road before check valve is provided with electromagnetic relief valve.
The injector of technique scheme, including penetrating seat, injection return oil cylinder, penetrating an oil cylinder, feeding barrel, feeding spiro rod Inverting oil motor with pan feeding, double oil pumps are arranged in parallel, and the fuel-displaced of oil pump is pressed through digital ratio equation overflow valve or double proportional pressure control valve After the automatically controlling of power and flow, then it is controlled by the action of three-position four-way valve V1 correlation seat oil cylinder, passes through 3-position 4-way The action that valve V2 returns oil cylinder to injection is controlled, and is controlled the action of pan feeding reversion oil motor by three-position four-way valve V3 System, thus realize automatically controlling of the pressure x velocity during preformed foaming injection, and easy and simple to handle, system working stability, More preferably ensure that the accurate of injection density, with uniformly, improves plastic injection quality.
Accompanying drawing explanation
The present invention has a drawings described below:
Fig. 1 is the structural representation of preformed foaming proportion injection machine.
Detailed description of the invention
As it can be seen, the present invention preformed foaming proportion injection machine, including hydraulic circuit, penetrate seat 3, penetrating on seat 3 install Injection return oil cylinder C1, feeding barrel 1, pan feeding reversion oil motor V7, penetrate seat 3 and promote and front and back move by penetrating an oil cylinder C2 Making, feeding spiro rod 2 is rotated by pan feeding reversion oil motor V7 drive in being rotatably located at feeding barrel 1, and feeding spiro rod 2 is sending Can move forward and backward in material barrel 1, pan feeding reversion oil motor V7 drives feeding spiro rod 2 to carry out backward movement, feeding spiral shell when reversion Bar 2 retreats moving ahead after putting in place and is promoted by injection return oil cylinder C1.Described hydraulic circuit includes the first oil that motor M drives Pump P1 and the second oil pump P2, first, second oil pump is arranged in parallel, the double proportional pressure control valve V4(of the fuel-displaced warp of the first oil pump P1 or list Proportional pressure control valve) after be divided into three tunnels and be respectively turned on three-position four-way valve V1, V2 and V3, an oil-out of three-position four-way valve V1 is connected Penetrating the front oil-in of an oil cylinder C2, another oil-out connects the rear oil-in penetrating an oil cylinder C2, of three-position four-way valve V2 Oil-out is connected injection and is returned the front oil-in of oil cylinder C1, and another oil-out is connected injection by counterbalance valve V6 and returned oil cylinder C1 Rear oil-in, oil-out of three-position four-way valve V3 connects the upper oil-in of pan feeding reversion oil motor V7, and another is fuel-displaced Mouth connects the lower oil-in of pan feeding reversion oil motor V7；The fuel-displaced of second oil pump P2 connects double proportional pressure control valve after check valve V8 V4, the second oil pump outlet line road before check valve V8 is provided with electromagnetic relief valve V5.
Preformed of the present invention foaming job step is:Original position, spacing after penetrating seat, (feeding spiro rod leans on injection front limit Before)；Motor M drives the first oil pump P1, the second oil pump P2 to work simultaneously, and double proportional pressure control valve V4, electromagnetic relief valve V5 put into Work；Hydraulic oil is divided into three tunnels after double proportional pressure control valve V4, and three-position four-way valve V3 devotes oneself to work, and first via hydraulic oil passes through Driving pan feeding reversion oil motor V7 reversion after three-position four-way valve V3, then feeding spiro rod carries out backward movement, and pan feeding puts in place； Three-position four-way valve V3, electromagnetic relief valve V5 deactivate, and pan feeding reversion oil motor V7 stops reversion, the hydraulic oil of the second oil pump P2 Directly oil return；Three-position four-way valve V1 devotes oneself to work, and the second road hydraulic oil passes through three-position four-way valve V1 laggard incident base oil cylinder C2, penetrates an oil cylinder C2 promotion and penetrates a front limit；Three-position four-way valve V2 devotes oneself to work, and the 3rd road hydraulic oil passes through 3-position 4-way Entering injection after valve V2 and return oil cylinder C1, injection returns oil cylinder C1 and promotes feeding spiro rod front limit, and injection puts in place；Three four Logical valve V2 deactivates, three-position four-way valve V1 dislocation, penetrates after seat is penetrated in an oil cylinder C2 promotion spacing；Three-position four-way valve V1, Double proportional pressure control valve V4 deactivate, and circulate according to this.

Claims (1)

1. preformed foaming proportion injection machine, including hydraulic circuit, penetrate seat, penetrating on seat install injection return oil cylinder, feeding material Cylinder and pan feeding invert oil motor, penetrate seat by penetrating an oil cylinder pushing and carry out fore-aft motion, and feeding spiro rod is rotatably located at feeding barrel Interior drive by pan feeding reversion oil motor rotates, and feeding spiro rod can move forward and backward in feeding barrel, pan feeding reversion oil motor Driving feeding spiro rod to carry out backward movement when reversion, feeding spiro rod retreats moving ahead after putting in place and is pushed away by injection return oil cylinder It is dynamic, it is characterised in that: hydraulic circuit includes motor-driven first oil pump and the second oil pump, and first, second oil pump is arranged in parallel, First oil pump fuel-displaced be divided into after digital ratio equation overflow valve or double proportional pressure control valve three tunnels be respectively turned on three-position four-way valve V1, V2 and One oil-out of V3, three-position four-way valve V1 connects the front oil-in penetrating an oil cylinder, and another oil-out is connected and penetrated an oil cylinder Rear oil-in, an oil-out connection injection of three-position four-way valve V2 returns the front oil-in of oil cylinder, and another oil-out passes through Counterbalance valve is connected injection and is returned the rear oil-in of oil cylinder, and an oil-out of three-position four-way valve V3 connects pan feeding reversion oil motor Upper oil-in, another oil-out connects the lower oil-in of pan feeding reversion oil motor；The fuel-displaced of second oil pump is followed by through check valve Logical double proportional pressure control valve, the second oil pump outlet line road before check valve is provided with electromagnetic relief valve.
CN201610525561.2A 2016-07-06 2016-07-06 Preformed foaming proportion injection machine Active CN106042312B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610525561.2A CN106042312B (en) 2016-07-06 2016-07-06 Preformed foaming proportion injection machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610525561.2A CN106042312B (en) 2016-07-06 2016-07-06 Preformed foaming proportion injection machine

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CN106042312A true CN106042312A (en) 2016-10-26
CN106042312B CN106042312B (en) 2018-03-20

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Cited By (2)

* Cited by examiner, † Cited by third party
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
CN109955423A (en) * 2019-04-30 2019-07-02 广东奔迪新材料科技有限公司 A kind of large-scale ultrahigh pressure thermoplastic polymer foaming and forming apparatus and its method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85106043A (en) * 1985-07-12 1987-01-07 上海塑料制品五厂 Single motor-driven premolding injection machine
JPH08187755A (en) * 1995-01-10 1996-07-23 Mitsubishi Heavy Ind Ltd Method for control of dwelling in injection molding machine
CN1413824A (en) * 2002-08-06 2003-04-30 宁波海天股份有限公司 Preinjection, injection hydraulic return passage of injection machine
TW201000296A (en) * 2008-06-16 2010-01-01 Daikin Ind Ltd Hydraulic device for injection molding machine and method of controlling the same
CN201579966U (en) * 2009-12-24 2010-09-15 浙江申达机器制造股份有限公司 Proportion back pressure hydraulic loop for injection machine
CN205835896U (en) * 2016-07-06 2016-12-28 瑞安市兴中皮革机械有限公司 Preformed foaming proportion injection machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85106043A (en) * 1985-07-12 1987-01-07 上海塑料制品五厂 Single motor-driven premolding injection machine
JPH08187755A (en) * 1995-01-10 1996-07-23 Mitsubishi Heavy Ind Ltd Method for control of dwelling in injection molding machine
CN1413824A (en) * 2002-08-06 2003-04-30 宁波海天股份有限公司 Preinjection, injection hydraulic return passage of injection machine
TW201000296A (en) * 2008-06-16 2010-01-01 Daikin Ind Ltd Hydraulic device for injection molding machine and method of controlling the same
CN201579966U (en) * 2009-12-24 2010-09-15 浙江申达机器制造股份有限公司 Proportion back pressure hydraulic loop for injection machine
CN205835896U (en) * 2016-07-06 2016-12-28 瑞安市兴中皮革机械有限公司 Preformed foaming proportion injection machine

Cited By (4)

* Cited by examiner, † Cited by third party
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
CN109955423A (en) * 2019-04-30 2019-07-02 广东奔迪新材料科技有限公司 A kind of large-scale ultrahigh pressure thermoplastic polymer foaming and forming apparatus and its method
CN109955423B (en) * 2019-04-30 2024-04-02 广东奔迪新材料科技有限公司 Large-scale ultrahigh-pressure thermoplastic polymer foaming molding device and method

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Effective date of registration: 20170117

Address after: 325200 East Road, Dongshan Economic Development Zone, Zhejiang, Ruian, No. 1088

Applicant after: Ruian Xingzhong Industrial Co. Ltd.

Address before: 325200 Wenzhou, Ruian city on the streets of Cai Cai Zhai Industrial Zone

Applicant before: Ruian Xingzhong Leather Machinery Co., Ltd.

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