CN114001059A - V-shaped injection hydraulic oil way of injection molding machine - Google Patents

V-shaped injection hydraulic oil way of injection molding machine Download PDF

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Publication number
CN114001059A
CN114001059A CN202110982104.7A CN202110982104A CN114001059A CN 114001059 A CN114001059 A CN 114001059A CN 202110982104 A CN202110982104 A CN 202110982104A CN 114001059 A CN114001059 A CN 114001059A
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CN
China
Prior art keywords
oil
injection
valve
outlet
inlet
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Pending
Application number
CN202110982104.7A
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Chinese (zh)
Inventor
戴国平
郑衍红
陈金超
胡建明
王万春
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Haitian Plastics Machinery Group
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Haitian Plastics Machinery Group
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Publication date
Application filed by Haitian Plastics Machinery Group filed Critical Haitian Plastics Machinery Group
Priority to CN202110982104.7A priority Critical patent/CN114001059A/en
Publication of CN114001059A publication Critical patent/CN114001059A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • 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
    • B29C45/82—Hydraulic or pneumatic circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with load-holding valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • 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
    • B29C2945/76655—Location of control
    • B29C2945/76775—Fluids
    • B29C2945/76785—Fluids hydraulic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/76—Control of force or torque of the output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to the technical field of hydraulic control of an injection molding machine, and solves the problems of stable vertical movement part and unsmooth stored material oil supply of a V-shaped injection seat of the injection molding machine in the prior art, and particularly discloses a V-shaped injection hydraulic oil circuit of the injection molding machine, which comprises a system pressure oil inlet, an oil return port, a seat platform oil circuit, an injection oil circuit and a stored material oil circuit, wherein a bidirectional hydraulic lock, a first damper and a second damper are additionally arranged in the seat platform oil circuit for driving the injection seat to move so as to ensure the stability of the vertical movement of the injection seat and effectively keep the position of the injection seat, a third electromagnetic reversing valve for supplying the oil to an injection oil cylinder is arranged in the stored material oil circuit, a one-way valve is arranged between the stored material oil circuit and the oil return port and also is arranged between the injection oil circuit and the oil return port, the one-way valve can provide return back pressure for the third electromagnetic reversing valve and the injection oil cylinder, so as to effectively ensure the smoothness of the stored material supply, and the ejection oil cylinder and the storage screw can be prevented from falling down, and the position of the ejection oil cylinder is kept.

Description

V-shaped injection hydraulic oil way of injection molding machine
Technical Field
The invention relates to the technical field of injection molding machines, in particular to a V-shaped injection hydraulic oil way of an injection molding machine.
Background
The injection molding machine can be divided into horizontal, vertical and vertical-horizontal combined type according to the arrangement mode of the injection devices and the mold locking devices, in a common horizontal injection molding machine, the injection molding machines with various styles such as double colors, multiple colors, angle type, correlation and the like can be derived according to the placement and the number of the injection devices, and the common point of the injection devices is parallel to the ground.
In reality, a V-shaped injection device is a vertical downward injection device, and because the injection device moves up and down, the movement speed is difficult to keep stable and reliable, and the seat oil cylinder and the storage screw rod are easy to fall off under the action of gravity.
Disclosure of Invention
The invention is made in view of the problems, and aims to provide a V-shaped injection hydraulic oil way of an injection molding machine, wherein an injection pedestal moves up and down stably, and a storage screw and an oil cylinder are effectively prevented from falling.
In order to achieve the above purpose, the present invention provides a V-shaped injection hydraulic oil circuit of an injection molding machine, which comprises a system pressure oil inlet, an oil return port, a seat oil circuit, an injection oil circuit and a storage oil circuit, wherein the seat oil circuit comprises a first electromagnetic directional valve, a bidirectional hydraulic lock and two seat oil cylinders, the first electromagnetic directional valve is provided with a first oil inlet, a first oil outlet, a second oil inlet and a second oil outlet, the bidirectional hydraulic lock is provided with a third oil inlet, a third oil outlet, a fourth oil inlet and a fourth oil outlet, the first oil inlet is connected with the system pressure oil inlet, the first oil outlet is connected with the third oil inlet, the third oil outlet is connected with the oil inlets of the two seat oil cylinders, the oil outlets of the two seat oil cylinders are connected with the fourth oil inlet, the fourth oil outlet is connected with the second oil inlet, the second oil outlet is connected with the oil return port, a first damper is arranged between the third oil outlet and the oil inlets of the two seat stand oil cylinders, and a second damper is arranged between the fourth oil inlet and the oil outlets of the two seat stand oil cylinders;
the oil outlet path comprises an O-shaped reversing valve and two oil outlet cylinders, the O-shaped reversing valve is provided with a fifth oil inlet, a fifth oil outlet, a sixth oil inlet and a sixth oil outlet, the fifth oil inlet is connected with the system pressure oil inlet, the fifth oil outlet is connected with the oil inlets of the two oil outlet cylinders, the oil outlets of the two oil outlet cylinders are connected with the sixth oil inlet, and the sixth oil outlet is connected with the oil return port;
the storage oil circuit comprises a second electromagnetic directional valve and a storage motor, an oil inlet of the second electromagnetic directional valve is connected with an oil inlet of the system pressure oil, an oil outlet of the second electromagnetic directional valve is connected with an oil inlet of the storage motor, and an oil outlet of the storage motor is connected with an oil return port.
According to the V-shaped injection hydraulic oil circuit of the injection molding machine, the oil circuit of the seat stand further comprises a first pressure gauge, and the first pressure gauge is connected with the system pressure oil inlet.
According to the injection hydraulic oil way for the injection molding machine V-shaped injection, the injection oil way further comprises a two-way cartridge valve and a proportional pressure valve, and an oil inlet of the two-way cartridge valve is connected with an oil outlet of the injection oil cylinder; the proportional pressure valve is connected with the two-way cartridge valve and is used for controlling the opening pressure of the two-way cartridge valve.
According to the V-shaped injection hydraulic oil circuit of the injection molding machine, one side of the two-way cartridge valve is provided with the second pressure gauge, and the second pressure gauge is connected with the oil outlet of the injection oil cylinder.
According to the injection molding machine V type injection hydraulic pressure oil circuit, the storage oil circuit still includes the third electromagnetic directional valve, the oil-out of storage motor with the oil return opening meets through the pipeline, the oil-out of storage motor and pipeline between the oil return opening with the oil inlet of third electromagnetic directional valve meets, just the oil-out of third electromagnetic directional valve with the oil-out of penetrating the hydro-cylinder meets.
According to the injection molding machine V type injection hydraulic pressure oil circuit, still include the check valve, the second oil-out and the oil-out of ejection of compact motor all with the oil inlet of check valve meets, the oil-out of check valve with the oil return opening meets, the pipeline between the oil-out of storage motor and the check valve with the oil inlet of third electromagnetic directional valve meets.
According to the V-shaped injection hydraulic oil circuit of the injection molding machine, the check valve is provided with a first preset opening pressure value.
The invention has the following beneficial effects:
1. the two-way hydraulic lock and the damping are arranged in the oil circuit of the seat stand, so that the injection seat stand can stably move up and down, and the position of the seat stand is effectively kept;
2. the O-shaped reversing valve is adopted, so that the position holding capacity of the seat stand oil cylinder can be improved;
3. the one-way valve is arranged, and the one-way valve has a first preset opening pressure value, so that the oil return back pressure provided by the one-way valve enables the rodless cavity of the seat stand oil cylinder to keep a certain pressure, and the seat stand oil cylinder and the storage screw rod can be prevented from falling;
4. the third electromagnetic reversing valve for supplementing oil to the base oil cylinder is arranged in front of the one-way valve, so that the oil return back pressure of the one-way valve can ensure the smoothness of oil supplementation of the base oil cylinder when storing materials;
5. be equipped with proportional pressure valve, control storage pressure that can be accurate.
Drawings
FIG. 1 is a schematic illustration of a hydraulic circuit of the present invention;
in the figure: 1. a first electromagnetic directional valve; 2. a bidirectional hydraulic lock; 3. a seat oil cylinder; 4. A first damping; 5. a second damping; 6. an O-shaped reversing valve; 7. an ejection cylinder; 8. a second electromagnetic directional valve; 9. a storage motor; 10. a first pressure gauge; 11. a two-way cartridge valve; 12. a proportional pressure valve; 13. a second pressure gauge; 14. a third electromagnetic directional valve; 15. A one-way valve; 16. a system pressure oil inlet; 17. and an oil return port.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a V-shaped injection hydraulic oil circuit of an injection molding machine comprises a system pressure oil inlet 16, an oil return port 17, a seat oil circuit, an injection oil circuit and a storage oil circuit, wherein when the injection molding machine starts to work, the seat oil circuit controls the injection seat to move, when the injection seat moves to a preset position, namely when a charging barrel is abutted to a feeding port, the injection oil circuit controls the seat oil cylinder to start injection action, after the injection is finished, the injection oil circuit controls the injection seat to start injection and retreat, and the storage oil circuit controls a storage motor to store the storage material, wherein the seat oil circuit comprises a first electromagnetic directional valve 1, a two-way hydraulic lock 2 and two seat oil cylinders 3, the first electromagnetic directional valve 1 is provided with a first oil inlet, a first oil outlet, a second oil inlet and a second oil outlet, the two-way hydraulic lock 2 is provided with a third oil inlet, a third oil outlet, a fourth oil inlet and a fourth oil outlet, the first oil inlet meets with system pressure oil import, first oil-out meets with the third oil inlet, the third oil-out all meets with the oil inlet of two seat platform hydro-cylinders 3, the oil-out of two seat platform hydro-cylinders 3 all meets with the fourth oil inlet, the fourth oil-out meets with the second oil inlet, the second oil-out meets with the oil return port, and be equipped with first damping 4 between the oil inlet of third oil-out and two seat platform hydro-cylinders 3, be equipped with second damping 5 between the oil-out of fourth oil inlet and two seat platform hydro-cylinders, wherein two-way hydraulic lock 2 is exactly two independent check valves in nature, it can avoid the refluence of hydraulic oil, can prevent the gliding of injection seat, first damping 4 and second damping 5 can make the flow of hydraulic oil more gentle, then can make the motion of injection seat more steady.
The oil injection path comprises an O-shaped reversing valve 6 and two oil injection cylinders 7, the O-shaped reversing valve 6 is provided with a fifth oil inlet, a fifth oil outlet, a sixth oil inlet and a sixth oil outlet, the fifth oil inlet is connected with a system pressure oil inlet, the fifth oil outlet is connected with the oil inlets of the two oil injection cylinders 7, the oil outlets of the two oil injection cylinders 7 are connected with the sixth oil inlet, and the sixth oil outlet is connected with an oil return port, wherein hydraulic oil enters from the system pressure oil inlet, sequentially passes through the fifth oil inlet and the fifth oil outlet, enters the oil injection cylinders 7, sequentially passes through the sixth oil inlet and the sixth oil outlet, and is discharged from the oil return port, in the prior art, the oil injection path adopts a conventional electromagnetic reversing valve, in the embodiment, the O-shaped reversing valve 6 is adopted, and can improve the position holding capacity of the seat stand oil cylinder, the dropping of the ejection oil cylinder can be effectively prevented.
The material storage oil path comprises a second electromagnetic directional valve 8 and a material storage motor 9, an oil inlet of the second electromagnetic directional valve 8 is connected with a system pressure oil inlet, an oil outlet of the second electromagnetic directional valve 8 is connected with an oil inlet of the material storage motor 9, an oil outlet of the material storage motor 9 is connected with an oil return port, hydraulic oil entering from the system pressure oil inlet reaches the material storage motor 9 through the second electromagnetic directional valve 8, and the hydraulic oil is discharged from the oil return port after coming out of the material storage motor 9.
The oil circuit of the seat stand further comprises a first pressure gauge 10, the first pressure gauge 10 is connected with a system pressure oil inlet 16, the pressure gauge is used for detecting the pressure of hydraulic oil provided by the system pressure oil inlet 16, and a pressure sensor is arranged beside the pressure gauge and can transmit the pressure of the hydraulic oil to a control system.
The injection oil way also comprises a two-way cartridge valve 11 and a proportional pressure valve 12, wherein an oil inlet of the two-way cartridge valve 11 is connected with an oil outlet of the injection oil cylinder 7; the proportional pressure valve 12 is connected with the two-way cartridge valve 11 and used for controlling the opening pressure of the two-way cartridge valve 11, a fourth electromagnetic directional valve is arranged between the two-way cartridge valve 11 and the proportional pressure valve 12, when material storage is started, the fourth electromagnetic directional valve is electrified, the proportional pressure valve 12 is electrified, hydraulic oil enters the material storage motor 9 through the second electromagnetic directional valve 8 to be stored, when the material storage is carried out, the material storage screw moves backwards to push the injection oil cylinder 7 to move, the hydraulic oil in the oil cylinder cavity of the injection oil cylinder 7 is discharged through the two-way cartridge valve 11, and the proportional pressure valve 12 can control the opening pressure of the two-way cartridge valve 11 in the electrified state, so that the material storage pressure of the whole system is controlled.
And a second pressure gauge 13 is arranged on one side of the two-way cartridge valve 11, the second pressure gauge 13 is connected with an oil outlet of the injection oil cylinder 7, and the hydraulic oil pressure at the two-way cartridge valve 11 can be detected.
The material storage oil path further comprises a third electromagnetic directional valve 14, an oil outlet of the material storage motor 9 is connected with an oil return port through a pipeline, a pipeline between the oil outlet of the material storage motor 9 and the oil return port is connected with an oil inlet of the third electromagnetic directional valve 14, an oil outlet of the third electromagnetic directional valve 14 is connected with an oil outlet of the injection oil cylinder 7, and hydraulic oil from the oil outlet of the material storage motor 9 can supplement oil for a rodless cavity of the injection oil cylinder 7 through the third electromagnetic directional valve 14.
The injection seat further comprises a one-way valve 15, the second oil outlet and the oil outlet of the storage motor 9 are connected with the oil inlet of the one-way valve 15, the oil outlet of the one-way valve 15 is connected with an oil return port, and a pipeline between the oil outlet of the storage motor 15 and the one-way valve 15 is connected with the oil inlet of the third electromagnetic directional valve 14, wherein the one-way valve 15 is provided with a first preset opening pressure value, the one-way valve 15 provides oil return back pressure for the first electromagnetic directional valve 1 and the third electromagnetic directional valve 14, the dropping of the seat oil cylinder 3 and the storage screw can be effectively prevented, and the first preset opening pressure value can be determined according to the requirement of the injection seat.
The invention provides a V-shaped injection hydraulic oil circuit of an injection molding machine, which comprises a system pressure oil inlet, an oil return port, a seat platform oil circuit, an injection oil circuit and a material storage oil circuit, wherein a bidirectional hydraulic lock, a first damper and a second damper are additionally arranged in the seat platform oil circuit for driving an injection seat to move so as to ensure the stability of the up-and-down movement of the injection seat and effectively maintain the position of the injection seat, a third electromagnetic reversing valve for supplementing oil for an injection oil cylinder is arranged in the material storage oil circuit, a one-way valve is arranged between the material storage oil circuit and the oil return port and also positioned between the injection oil circuit and the oil return port, and the one-way valve can provide oil return back pressure for the third electromagnetic reversing valve and the injection oil cylinder, so that the oil supplementing is smooth in the process of effectively storing materials and the injection oil cylinder and the material storage screw rod are prevented from falling down so as to maintain the position of the injection oil cylinder.
The technical solutions of the present invention are explained in detail above with reference to the accompanying drawings, and the described embodiments are used to help understanding the idea of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Claims (7)

1. A V-shaped injection hydraulic oil way of an injection molding machine is characterized by comprising a system pressure oil inlet, an oil return port, a seat oil way, an injection oil way and a storage oil way, wherein the seat oil way comprises a first electromagnetic directional valve, a bidirectional hydraulic lock and two seat oil cylinders, the first electromagnetic directional valve is provided with a first oil inlet, a first oil outlet, a second oil inlet and a second oil outlet, the bidirectional hydraulic lock is provided with a third oil inlet, a third oil outlet, a fourth oil inlet and a fourth oil outlet, the first oil inlet is connected with the system pressure oil inlet, the first oil outlet is connected with the third oil inlet, the third oil outlet is connected with the oil inlets of the two seat oil cylinders, the oil outlets of the two seat oil cylinders are connected with the fourth oil inlet, and the fourth oil outlet is connected with the second oil inlet, the second oil outlet is connected with the oil return port, a first damper is arranged between the third oil outlet and the oil inlets of the two seat stand oil cylinders, and a second damper is arranged between the fourth oil inlet and the oil outlets of the two seat stand oil cylinders;
the oil outlet path comprises an O-shaped reversing valve and two oil outlet cylinders, the O-shaped reversing valve is provided with a fifth oil inlet, a fifth oil outlet, a sixth oil inlet and a sixth oil outlet, the fifth oil inlet is connected with the system pressure oil inlet, the fifth oil outlet is connected with the oil inlets of the two oil outlet cylinders, the oil outlets of the two oil outlet cylinders are connected with the sixth oil inlet, and the sixth oil outlet is connected with the oil return port;
the storage oil circuit comprises a second electromagnetic directional valve and a storage motor, an oil inlet of the second electromagnetic directional valve is connected with an oil inlet of the system pressure oil, an oil outlet of the second electromagnetic directional valve is connected with an oil inlet of the storage motor, and an oil outlet of the storage motor is connected with an oil return port.
2. The V-shape hydraulic oil circuit of injection molding machine of claim 1, wherein said seat oil circuit further comprises a first pressure gauge connected to said system pressure oil inlet.
3. The V-shaped injection hydraulic oil circuit of an injection molding machine according to claim 1, characterized in that the injection oil circuit further comprises a two-way cartridge valve and a proportional pressure valve, wherein an oil inlet of the two-way cartridge valve is connected with an oil outlet of the injection oil cylinder; the proportional pressure valve is connected with the two-way cartridge valve and is used for controlling the opening pressure of the two-way cartridge valve.
4. The V-shaped injection hydraulic oil circuit of an injection molding machine according to claim 3, wherein a second pressure gauge is arranged on one side of the two-way cartridge valve and is connected with an oil outlet of the injection oil cylinder.
5. The V-shaped injection hydraulic oil circuit of an injection molding machine according to claim 1, characterized in that the stock oil circuit further comprises a third electromagnetic directional valve, the oil outlet of the stock motor is connected with the oil return port through a pipeline, the pipeline between the oil outlet of the stock motor and the oil return port is connected with the oil inlet of the third electromagnetic directional valve, and the oil outlet of the third electromagnetic directional valve is connected with the oil outlet of the injection cylinder.
6. The V-shaped injection hydraulic oil circuit of an injection molding machine according to claim 5, characterized by further comprising a check valve, wherein the second oil outlet and the oil outlet of the stock motor are both connected with the oil inlet of the check valve, the oil outlet of the check valve is connected with the oil return port, and a pipeline between the oil outlet of the stock motor and the check valve is connected with the oil inlet of the third electromagnetic directional valve.
7. The V-shaped hydraulic oil circuit for injection molding machine of claim 6, wherein said check valve is provided with a first preset opening pressure value.
CN202110982104.7A 2021-08-25 2021-08-25 V-shaped injection hydraulic oil way of injection molding machine Pending CN114001059A (en)

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CN202110982104.7A CN114001059A (en) 2021-08-25 2021-08-25 V-shaped injection hydraulic oil way of injection molding machine

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Citations (11)

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Publication number Priority date Publication date Assignee Title
JPH01281913A (en) * 1988-05-09 1989-11-13 Toshiba Mach Co Ltd Oil hydraulic circuit of injection molder
JPH08252846A (en) * 1995-03-16 1996-10-01 Niigata Eng Co Ltd Hydraulic circuit of injection molding machine
CN202826327U (en) * 2012-09-26 2013-03-27 海天塑机集团有限公司 Single-cylinder injection oil way of injection moulding machine
CN203699758U (en) * 2013-12-24 2014-07-09 浙江三一装备有限公司 Winch hydraulic system and engineering machinery
CN105201944A (en) * 2015-09-25 2015-12-30 广西柳工机械股份有限公司 Flow enlarging valve and hydraulic steering system
CN105544643A (en) * 2015-12-31 2016-05-04 湖南瑞龙重工科技有限公司 Pressure stabilization control system of pitching oil cylinders of active carry-scraper
CN206344426U (en) * 2016-11-24 2017-07-21 无锡海天机械有限公司 A kind of integral type back pressure controls oil circuit
CN207156388U (en) * 2017-09-22 2018-03-30 成都市联余精密机械有限公司 A kind of injection machine injection hydraulic circuit for realizing high response injection
CN108502083A (en) * 2018-04-20 2018-09-07 重庆大学 A kind of energy-storage hydraulic bicycle being suitble to more hillside fields shapes
CN210769670U (en) * 2019-08-24 2020-06-16 中铁电气化局集团西安电气化工程有限公司 Leveling hydraulic system for ditcher
CN211968331U (en) * 2019-11-26 2020-11-20 海天塑机集团有限公司 A locking oil circuit that moves back of storage screw rod for foaming special injection molding machine a little

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JPH08252846A (en) * 1995-03-16 1996-10-01 Niigata Eng Co Ltd Hydraulic circuit of injection molding machine
CN202826327U (en) * 2012-09-26 2013-03-27 海天塑机集团有限公司 Single-cylinder injection oil way of injection moulding machine
CN203699758U (en) * 2013-12-24 2014-07-09 浙江三一装备有限公司 Winch hydraulic system and engineering machinery
CN105201944A (en) * 2015-09-25 2015-12-30 广西柳工机械股份有限公司 Flow enlarging valve and hydraulic steering system
CN105544643A (en) * 2015-12-31 2016-05-04 湖南瑞龙重工科技有限公司 Pressure stabilization control system of pitching oil cylinders of active carry-scraper
CN206344426U (en) * 2016-11-24 2017-07-21 无锡海天机械有限公司 A kind of integral type back pressure controls oil circuit
CN207156388U (en) * 2017-09-22 2018-03-30 成都市联余精密机械有限公司 A kind of injection machine injection hydraulic circuit for realizing high response injection
CN108502083A (en) * 2018-04-20 2018-09-07 重庆大学 A kind of energy-storage hydraulic bicycle being suitble to more hillside fields shapes
CN210769670U (en) * 2019-08-24 2020-06-16 中铁电气化局集团西安电气化工程有限公司 Leveling hydraulic system for ditcher
CN211968331U (en) * 2019-11-26 2020-11-20 海天塑机集团有限公司 A locking oil circuit that moves back of storage screw rod for foaming special injection molding machine a little

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