CN105003473A - High-pressure hydraulic boosting device - Google Patents
High-pressure hydraulic boosting device Download PDFInfo
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- CN105003473A CN105003473A CN201510511593.2A CN201510511593A CN105003473A CN 105003473 A CN105003473 A CN 105003473A CN 201510511593 A CN201510511593 A CN 201510511593A CN 105003473 A CN105003473 A CN 105003473A
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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
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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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
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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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
- 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
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
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- Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
一种高压液压增压装置，包括彼此连接的换向阀和执行缸体；其特征在于：还包括增压缸体和保压缸体，以及用于控制增压缸体与执行机构动作的控制油路；所述控制油路包含插装阀、第一方向阀和第二方向阀。所述保压缸体通过第一方向阀与增压缸体连接；所述执行缸体通过插装阀或第二方向阀连接换向阀。本发明设置保压缸体、增压缸体和控制油路三部分：保压缸体用于长时间保持增压的压力，增压缸体用来产生增压压力，控制油路用于调整增压压力和增压的动作顺序。本结构先给执行机构供油，等到需要增压时可采用时间触发或压力触发，使增压缸体作用，达到增压的效果。通过先给执行机构供油，可大大缩小增压装置的空间。
A high-pressure hydraulic boosting device, including a reversing valve and an executive cylinder connected to each other; it is characterized in that it also includes a booster cylinder and a pressure-holding cylinder, and a control device for controlling the actions of the booster cylinder and the actuator Oil circuit; the control oil circuit includes a cartridge valve, a first directional valve and a second directional valve. The pressure maintaining cylinder is connected to the pressurizing cylinder through a first directional valve; the executive cylinder is connected to a reversing valve through a cartridge valve or a second directional valve. The present invention is provided with three parts: the pressure-holding cylinder, the booster cylinder and the control oil circuit: the pressure-holding cylinder is used to maintain the boost pressure for a long time, the booster cylinder is used to generate the boost pressure, and the control oil circuit is used to adjust Boost pressure and sequence of actions for boost. This structure first supplies oil to the actuator, and when it is necessary to pressurize, time trigger or pressure trigger can be used to make the pressurized cylinder work to achieve the effect of pressurization. By supplying oil to the actuator first, the space required for the booster can be significantly reduced.
Description
技术领域technical field
本发明涉及一种高压液压增压装置，特别涉及一种用于液压机械的增压装置。The invention relates to a high-pressure hydraulic boosting device, in particular to a boosting device for hydraulic machinery.
背景技术Background technique
中国专利文献号CN204054552U于2014年12月31日公开了一种二板液压注塑机常压、增压、高压锁模回路，并具体公开了。包括锁模液压缸、增压液压缸、二位三通换向阀、锁模油路二位二通换向阀和锁模油路单向阀，锁模液压缸并联四个，二位三通换向阀的进油口P与连接高压油泵站的压力油管连接，二位三通换向阀的上侧油口A通过相应的油管同时与四个锁模液压缸的无杆腔连通；增压液压缸的小油缸端部的油口接管依次通过锁模油路二位二通换向阀和锁模油路单向阀同时与四个锁模液压缸的有杆腔连通，其特征在于：所述的压力油管通过第一分支压力油管与三位四通换向阀的压力侧油口P连接，三位四通换向阀的右端上侧油口A与增压液压缸的大油缸无杆腔的油口连接；三位四通换向阀的左端上侧油口B通过连通油管与增压液压缸的小油缸的有杆腔连通，同时，三位四通换向阀的左端上侧油口B还通过第二分支油管与增压液压缸的小油缸的无杆腔连通，在三位四通换向阀与增压液压缸之间连接的第二分支油管上设有常压单向阀；在锁模油路单向阀至四个锁模液压缸有杆腔的管路上通过第三分支油管与开模油路二位二通换向阀的单向阀腔P1油口连通，在开模油路二位二通换向阀的单向阀腔的回油管路上设有调速节流阀。据称，该结构不仅具有运动部件惯性小、响应速度快、驱动力量大的优点，同时具有常压锁模和高压锁模两个功能，但该结构设计的结构复杂，增压力弱，保持时间短，因此，有必要做进一步改进。Chinese Patent Document No. CN204054552U disclosed on December 31, 2014 a normal pressure, pressurized and high pressure mold clamping circuit of a two-platen hydraulic injection molding machine, and specifically disclosed it. Including clamping hydraulic cylinder, pressurized hydraulic cylinder, two-position three-way reversing valve, two-position two-way reversing valve for mold-clamping oil circuit and one-way valve for mold-clamping oil circuit, four clamping hydraulic cylinders are connected in parallel, two-position three-way The oil inlet P of the reversing valve is connected to the pressure oil pipe connected to the high-pressure oil pump station, and the upper oil port A of the two-position three-way reversing valve communicates with the rodless chamber of the four clamping hydraulic cylinders through the corresponding oil pipe at the same time; The oil port at the end of the small oil cylinder of the pressurized hydraulic cylinder communicates with the rod chambers of the four clamping hydraulic cylinders through the two-position two-way reversing valve of the clamping oil circuit and the one-way valve of the clamping oil circuit in sequence. That is: the pressure oil pipe is connected to the pressure side oil port P of the three-position four-way reversing valve through the first branch pressure oil pipe, and the oil port A on the upper right side of the three-position four-way reversing valve is connected to the large port of the booster hydraulic cylinder. The oil port of the rodless chamber of the oil cylinder is connected; the oil port B on the upper left end of the three-position four-way reversing valve is connected with the rod chamber of the small oil cylinder of the pressurized hydraulic cylinder through a connecting oil pipe, and at the same time, the three-position four-way reversing valve The oil port B on the upper side of the left end is also communicated with the rodless chamber of the small oil cylinder of the pressurized hydraulic cylinder through the second branch oil pipe, and the second branch oil pipe connected between the three-position four-way valve and the pressurized hydraulic cylinder is provided with Atmospheric pressure one-way valve; on the pipeline from the one-way valve of the clamping oil circuit to the rod cavity of the four clamping hydraulic cylinders, through the third branch oil pipe and the one-way valve chamber P1 of the two-position two-way reversing valve of the mold opening oil circuit The oil port is connected, and a speed regulating throttle valve is arranged on the oil return line of the one-way valve chamber of the two-position two-way reversing valve of the mold opening oil circuit. It is said that this structure not only has the advantages of small inertia of moving parts, fast response speed, and large driving force, but also has two functions of normal pressure mold clamping and high pressure mold clamping. Time is short, therefore, further improvements are necessary.
发明内容Contents of the invention
本发明的目的旨在提供一种结构简单合理、体积小、质量轻、增压压力高、保持时间长的高压液压增压装置，以克服现有技术中的不足之处。The object of the present invention is to provide a high-pressure hydraulic pressure boosting device with simple and reasonable structure, small volume, light weight, high boost pressure and long holding time, so as to overcome the deficiencies in the prior art.
按此目的设计的一种高压液压增压装置，包括彼此连接的换向阀和执行缸体；其特征在于：还包括增压缸体和保压缸体，以及用于控制增压缸体与执行机构动作的控制油路；所述控制油路包含插装阀、第一方向阀和第二方向阀。A high-pressure hydraulic boosting device designed according to this purpose includes a reversing valve and an executive cylinder connected to each other; The control oil circuit for the action of the actuator; the control oil circuit includes a cartridge valve, a first directional valve and a second directional valve.
所述保压缸体通过第一方向阀与增压缸体连接；所述执行缸体通过插装阀或第二方向阀连接换向阀。The pressure maintaining cylinder is connected to the pressurizing cylinder through a first directional valve; the executive cylinder is connected to a reversing valve through a cartridge valve or a second directional valve.
所述保压缸体内通过活塞密封分隔有氮气腔和油液腔；所述增压缸体内分为无杆腔和增压腔；所述执行缸体内分为前腔和后腔。The pressure-holding cylinder is divided into a nitrogen chamber and an oil chamber by a piston seal; the pressurized cylinder is divided into a rodless chamber and a pressurized chamber; the executive cylinder is divided into a front chamber and a rear chamber.
所述保压缸体的油液腔通过第一方向阀连接增压缸体的无杆腔；所述增压缸体的增压腔直接连接执行缸体的后腔；所述执行缸体的后腔通过插装阀或第二方向阀连接换向阀；所述执行缸体的前腔直接连接换向阀。The oil chamber of the pressure-holding cylinder is connected to the rodless chamber of the pressurized cylinder through the first directional valve; the pressurized chamber of the pressurized cylinder is directly connected to the rear chamber of the executive cylinder; The rear chamber is connected to the reversing valve through the cartridge valve or the second directional valve; the front chamber of the actuator block is directly connected to the reversing valve.
所述保压缸体的油液腔通过单向阀和减压阀与系统相连，氮气腔连接第一压力表开关和第一压力表。The oil chamber of the pressure maintaining cylinder is connected to the system through a one-way valve and a pressure reducing valve, and the nitrogen chamber is connected to the first pressure gauge switch and the first pressure gauge.
所述增压缸体的增压腔连接第二压力表开关和第二压力表。The boost chamber of the boost cylinder is connected with a second pressure gauge switch and a second pressure gauge.
本发明设置保压缸体、增压缸体和控制油路三部分：保压缸体用于长时间保持增压的压力，增压缸体用来产生增压压力，控制油路用于调整增压压力和增压的动作顺序。本结构先给执行机构供油，等到需要增压时可采用时间触发或压力触发，使增压缸体作用，达到增压的效果。通过先给执行机构供油，可大大缩小增压装置的空间。其具有结构简单合理、体积小、质量轻、增压压力高、保持时间长的特点。The present invention is provided with three parts: the pressure-holding cylinder, the booster cylinder and the control oil circuit: the pressure-holding cylinder is used to maintain the boost pressure for a long time, the booster cylinder is used to generate the boost pressure, and the control oil circuit is used to adjust Boost pressure and sequence of actions for boost. This structure first supplies oil to the actuator, and when it is necessary to pressurize, time trigger or pressure trigger can be used to make the pressurized cylinder work to achieve the effect of pressurization. By supplying oil to the actuator first, the space required for the booster can be significantly reduced. It has the characteristics of simple and reasonable structure, small volume, light weight, high boost pressure and long holding time.
附图说明Description of drawings
图1为本发明一实施例的原理图。FIG. 1 is a schematic diagram of an embodiment of the present invention.
具体实施方式Detailed ways
下面结合附图及实施例对本发明作进一步描述。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
参见图1，本高压液压增压装置，包括开关阀1、减压阀2、单向阀3、换向阀4、插装阀5、第一方向阀6、第二方向阀7、保压缸体8、第一压力表开关9、第一压力表10、增压缸体11、第二压力表开关12、第二压力表13和执行油缸14；其中，插装阀5、第一方向阀6和第二方向阀7配合连接形成用于控制增压缸体与执行机构动作的控制油路。Referring to Fig. 1, the high-pressure hydraulic pressure boosting device includes an on-off valve 1, a pressure reducing valve 2, a one-way valve 3, a reversing valve 4, a cartridge valve 5, a first directional valve 6, a second directional valve 7, and a pressure maintaining valve. Cylinder 8, first pressure gauge switch 9, first pressure gauge 10, booster cylinder 11, second pressure gauge switch 12, second pressure gauge 13 and executive oil cylinder 14; wherein, cartridge valve 5, first direction The valve 6 and the second directional valve 7 are cooperatively connected to form a control oil passage for controlling the action of the pressurized cylinder and the actuator.
具体地讲，保压缸体8通过第一方向阀6与增压缸体11连接；执行缸体14通过插装阀5或第二方向阀7连接换向阀4。Specifically, the pressure maintaining cylinder 8 is connected to the pressurizing cylinder 11 through the first directional valve 6 ; the actuator cylinder 14 is connected to the reversing valve 4 through the cartridge valve 5 or the second directional valve 7 .
进一步说，保压缸体8内通过活塞密封分隔有氮气腔和油液腔；增压缸体11内分为无杆腔和增压腔；执行缸体14内分为前腔和后腔。Furthermore, the pressure-holding cylinder 8 is divided into a nitrogen chamber and an oil chamber by a piston seal; the pressurized cylinder 11 is divided into a rodless chamber and a pressurized chamber; the actuator cylinder 14 is divided into a front chamber and a rear chamber.
具体连接关系如下：The specific connection relationship is as follows:
保压缸体8的油液腔通过第一方向阀6连接增压缸体11的无杆腔；The oil chamber of the pressure-holding cylinder 8 is connected to the rodless chamber of the booster cylinder 11 through the first directional valve 6;
增压缸体11的增压腔直接连接执行缸体14的后腔；The booster chamber of the booster cylinder 11 is directly connected to the rear chamber of the executive cylinder 14;
执行缸体14的后腔通过插装阀5或第二方向阀7连接换向阀4；The rear chamber of the actuator cylinder 14 is connected to the reversing valve 4 through the cartridge valve 5 or the second directional valve 7;
执行缸体14的前腔直接连接换向阀4。The front chamber of the executive cylinder 14 is directly connected to the reversing valve 4 .
保压缸体8的油液腔通过单向阀3和减压阀2与系统P相连，氮气腔连接第一压力表开关9和第一压力表10，对氮气腔内的压力实时监测。The oil chamber of the pressure-holding cylinder 8 is connected to the system P through the check valve 3 and the pressure reducing valve 2, and the nitrogen chamber is connected to the first pressure gauge switch 9 and the first pressure gauge 10 to monitor the pressure in the nitrogen chamber in real time.
增压缸体11的增压腔连接第二压力表开关12和第二压力表13，对增压腔内的压力实时监测。The boost chamber of the boost cylinder 11 is connected with a second pressure gauge switch 12 and a second pressure gauge 13 to monitor the pressure in the boost chamber in real time.
工作原理：working principle:
1、执行油缸14工进：换向阀4的右边电磁铁得电，第二方向阀7得电插装阀5打开，系统油进入执行油缸14后腔，并推动执行油缸14活塞杆前进，执行油缸14前腔的油通过换向阀4右位回到油箱，同时增压缸体11内的活塞回退到位。1. The working of the executive cylinder 14: the electromagnet on the right side of the reversing valve 4 is energized, the second direction valve 7 is energized and the cartridge valve 5 is opened, the system oil enters the back chamber of the executive cylinder 14, and pushes the piston rod of the executive cylinder 14 to move forward. The oil in the front chamber of the executive oil cylinder 14 returns to the oil tank through the right position of the reversing valve 4, and the piston in the booster cylinder 11 retreats to the right position at the same time.
2、执行油缸14增压：换向阀4处于中位，第二方向阀7失电，插装阀5关闭，第一方向阀6得电，保压缸体8油液腔内的油液进入增压缸体11的无杆腔，从而产生增压。2. Execution of cylinder 14 pressurization: reversing valve 4 is in the neutral position, second directional valve 7 is de-energized, cartridge valve 5 is closed, first directional valve 6 is energized, and the oil in the pressure-holding cylinder 8 oil chamber Enter the rodless chamber of the pressurized cylinder 11 to generate pressurization.
3、执行油缸14回退：换向阀4的左边电磁铁得电，第二方向阀7得电，第一方向阀6失电，系统油进入执行油缸14前腔，活塞杆回退，执行油缸14后腔的油一部分推动增压缸体11的活塞杆回退，一部分经换向阀4回到油箱。3. The actuator cylinder 14 retreats: the electromagnet on the left of the reversing valve 4 is energized, the second directional valve 7 is energized, the first directional valve 6 is de-energized, the system oil enters the front chamber of the actuator cylinder 14, the piston rod retracts, and the actuator A part of the oil in the rear chamber of the oil cylinder 14 pushes the piston rod of the pressurized cylinder body 11 to retreat, and a part returns to the oil tank through the reversing valve 4 .
上述为本发明的优选方案，显示和描述了本发明的基本原理、主要特征和本发明的优点。本领域的技术人员应该了解本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等同物界定。The above is the preferred solution of the present invention, showing and describing the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principle of the present invention, and the present invention also has various aspects without departing from the spirit and scope of the present invention. Variations and improvements, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107246422A (en) * | 2017-05-24 | 2017-10-13 | 晋中浩普液压设备有限公司 | A kind of reciprocating-type supercharger reversing arrangement and its application |
| CN112555208A (en) * | 2020-12-10 | 2021-03-26 | 重庆大学 | A hydraulic device and step control method suitable for ultra-high pressure precision force loading |
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| CN2861576Y (en) * | 2005-08-25 | 2007-01-24 | 烟台胜地汽车零部件制造有限公司 | Intelligent gas-liquid booster |
| CN101664797A (en) * | 2008-09-02 | 2010-03-10 | 广州震高机械有限公司 | Material injection device of die casting machine |
| CN201380582Y (en) * | 2009-04-11 | 2010-01-13 | 广东伊之密精密机械有限公司 | Oil-outlet servo control device of injection molding machine |
| CN103047222A (en) * | 2012-11-14 | 2013-04-17 | 江苏华商企业管理咨询服务有限公司 | Pressure boost and pressure maintaining system of hydraulic cylinder |
| CN202986163U (en) * | 2012-12-12 | 2013-06-12 | 佳木斯骥驰拖拉机制造有限公司 | Liquid and gas transformation pressurization device of numerical control turret-type punching machine |
| CN205001266U (en) * | 2015-08-19 | 2016-01-27 | 广东伊之密精密机械股份有限公司 | High pressure hydraulic pressure supercharging device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246422A (en) * | 2017-05-24 | 2017-10-13 | 晋中浩普液压设备有限公司 | A kind of reciprocating-type supercharger reversing arrangement and its application |
| CN112555208A (en) * | 2020-12-10 | 2021-03-26 | 重庆大学 | A hydraulic device and step control method suitable for ultra-high pressure precision force loading |
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