CN203614472U - 密炼机上顶栓油缸液压控制装置 - Google Patents

密炼机上顶栓油缸液压控制装置 Download PDF

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CN203614472U
CN203614472U CN201320795068.4U CN201320795068U CN203614472U CN 203614472 U CN203614472 U CN 203614472U CN 201320795068 U CN201320795068 U CN 201320795068U CN 203614472 U CN203614472 U CN 203614472U
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oil
electromagnetic cartridge
cartridge valve
oil cylinder
valve
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彭志深
林广�
张燕
张宏强
杨帆
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Yiyang Rubber Plastics Machinery Group Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/246—Component parts, details or accessories; Auxiliary operations for feeding in mixers having more than one rotor and a casing closely surrounding the rotors, e.g. with feeding plungers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • B29B7/283—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring data of the driving system, e.g. torque, speed, power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/801—Valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • 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
    • F15B2211/30515—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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/634—Electronic controllers using input signals representing a state of a valve
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6653—Pressure control
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6656—Closed loop control, i.e. control using feedback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
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    • 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
    • F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked
    • 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
    • F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel

Abstract

本实用新型公开了一种实现压砣的加压、浮砣，浮砣控制效果好的密炼机上顶栓油缸液压控制装置，它包括由液压泵、蓄能器组成的动力源，其特征是液压油一路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV1、电磁插装阀YV2与上顶栓油缸的无杆腔连接；另一油路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV4与上顶栓油缸的有杆腔连接，上顶栓油缸的有杆腔通过上升差动单向阀与进油口P1连接；电磁插装阀YV1、电磁插装阀YV2之间还连接有与回油口T2连接的电磁插装阀YV3；比例伺服阀PLV的进油口P与进油口P1连接，比例伺服阀PLV的回油口T与回油口T1连接，本实用新型简化了上顶栓油缸的液压控制装置，可真正实现上顶栓压力的闭环控制，提高了炼胶质量。

Description

密炼机上顶栓油缸液压控制装置
技术领域
本实用新型涉及一种密炼机，具体地说是一种密炼机上顶栓的控制，特别是涉及一种密炼机上顶栓油缸液压控制装置。
背景技术
密炼机是橡胶工业中将橡胶原料加工成半成品橡胶的关键设备，其中上顶栓是密炼机的核心部件，其主要功能是通过安装在上顶栓上的压砣给密炼室内胶料提供给定的压力，并且压砣随胶料的体积变化而产生跟踪运动，包括压砣上升、压砣下降、加压、浮砣等工况。目前，密炼机上顶栓的控制有气动控制方式和液压控制方式两种。其中，液压控制方式为近几年发展起来的控制方式，其压砣上升、压砣下降、加压、浮砣各工况都通过上顶栓PLC 往给定板输入电流信号和开、闭环切换信号来实现。虽然，液压控制方式可通过开环控制做到压砣的快速升降，但是，在通过闭环控制实现加压和浮砣时，由于浮砣它要求上顶栓受油压与胶料的合力接近为零，而在炼胶过程中，胶料对上顶栓的压力一直处于快速变化状态，因此，很难做到无杆腔与有杆腔的压差为零，实践中，几乎调不出浮砣效果，浮砣控制效果差，更难做到对压砣的高精度压力控制。因此，实际上现有密炼机上顶栓的压力控制采用的是开环控制，其上顶栓的压力波动很大，很难实现高精度的炼胶要求，以及在炼一车胶内改变上顶栓压力。且使用时须考虑上顶栓PLC与密炼机的主PLC的类型及通讯，现场调试复杂。
为此，专利号为200910206135.2、申请日为2009年10月10日、发明名称为密炼机上顶栓压砣的驱动方法及驱动装置的专利公开了一种密炼机上顶栓压砣的驱动方法及驱动装置，即压砣的上升、下降 采用液压控制装置控制，而对压砣的加压、浮砣则采用气动控制装置控制。由于上顶栓同时采用液压控制和气动控制，其结构复杂，体积大，因此，在实践中是很难实现的。
发明内容
本实用新型的目的是提供一种实现压砣的加压、浮砣，浮砣控制效果好的密炼机上顶栓油缸液压控制装置。
本实用新型是采用如下技术方案实现其发明目的的，一种密炼机上顶栓油缸液压控制装置，它包括由液压泵、蓄能器组成的动力源，液压油一路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV1、电磁插装阀YV2与上顶栓油缸的无杆腔连接；另一油路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV4与上顶栓油缸的有杆腔连接，上顶栓油缸的有杆腔通过上升差动单向阀与进油口P1连接；电磁插装阀YV1、电磁插装阀YV2之间还连接有与回油口T2连接的电磁插装阀YV3；比例伺服阀PLV的进油口P与进油口P1连接，比例伺服阀PLV的回油口T与回油口T1连接。
由于采用上述技术方案，本实用新型较好的实现了发明目的，简化了上顶栓油缸的液压控制装置，可真正实现上顶栓压力的闭环控制，实现浮砣炼胶或排胶工艺，使炼胶过程中，上顶栓压力控制稳定，改善了上顶栓的压料性能，提高了炼胶质量；同时，控制精度高，应用简单可靠，现场调试简单，减少了现场繁杂的调试工作量。
附图说明
图1是现有技术上顶栓的液压控制示意图；
图2是现有技术上顶栓的控制原理方框图；
图3是本实用新型上顶栓的液压控制示意图；
图4是本实用新型上顶栓的控制原理方框图。
具体实施方式
下面结合附图及实施例对本实用新型作进一步说明。
由图1、图2可知，在现有密炼机上顶栓的液压控制中，其压砣上升、压砣下降、加压、浮砣各工况都通过上顶栓PLC 往给定板输入电流信号和开、闭环切换信号来实现。在压砣4的上升、下降控制中，采用的是流量开环控制，即PLC向流量给定板输入给定信号，液压油通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YVA或者比例伺服阀PLV、带阻尼口的单向阀10向上顶栓油缸的无杆腔2或有杆腔1的进油，实现上顶栓3、压砣4的上升或下降。上升时，液压油回油通过油管经上顶栓油缸的有杆腔1、上升差动单向阀8进入比例伺服阀PLV的进油口P，实现差动回路。在快速下降时，为防止上顶栓油缸的有杆腔1容易产生负真空，由单向阀9从回油口T1补油，上升行程或下降行程由行程开关7控制。
在压砣4的加压、浮砣控制中，采用的是压力闭环控制，即上顶栓PLC向压力给定板输入给定信号，无杆腔压力传感器5、有杆腔压力传感器6分别检测无杆腔2、有杆腔1两腔的压力，将无杆腔压力与有杆腔压力（经油缸面积比换算）的压力差值反馈给上顶栓PLC，其差值与给定信号比较后，通过比例伺服阀PLV向上顶栓油缸的无杆腔2或有杆腔1进油，实现上顶栓3、压砣4的加压或浮砣。
虽然，液压控制方式可通过开环控制做到压砣4的快速升降，但是，在通过闭环控制实现压砣4的加压和浮砣时，由于浮砣它要求上顶栓3受油压与胶料的合力接近为零，而在炼胶过程中，胶料对上顶栓的压力一直处于快速变化状态，因此，很难做到无杆腔2与有杆腔1的压差为零，实践中，几乎调不出浮砣效果，浮砣控制效果差，更难做到对压砣4的高精度压力控制。因此，实际上现有密炼机上顶栓3的压力控制采用的是开环控制，其上顶栓3的压力波动很大，很难实现高精度的炼胶要求。
由图3、图4可知，一种密炼机上顶栓油缸液压控制装置，它包括由液压泵、蓄能器组成的动力源，液压油一路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV1、电磁插装阀YV2与上顶栓油缸的无杆腔连接；另一油路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV4与上顶栓油缸的有杆腔连接，上顶栓油缸的有杆腔通过上升差动单向阀与进油口P1连接；电磁插装阀YV1、电磁插装阀YV2之间还连接有与回油口T2连接的电磁插装阀YV3；比例伺服阀PLV的进油口P与进油口P1连接，比例伺服阀PLV的回油口T与回油口T1连接。
当压砣上升时，电磁插装阀YV1、电磁插装阀YV2得电接通，电磁插装阀YV3失电关闭，液压油通过油管经进油口P1、比例伺服阀PLV的进油口P、比例伺服阀PLV的A口、电磁插装阀YV1、电磁插装阀YV2进入上顶栓油缸的无杆腔2；同时，电磁插装阀YV4得电关闭，液压油回油通过油管经上顶栓油缸的有杆腔1、上升差动单向阀8进入比例伺服阀PLV的进油口P，实现差动回路，上顶栓3带动压砣4上升，上升速度由密炼机主PLC控制比例伺服阀PLV的开启量确定，上升行程由行程开关7控制。
当压砣下降时，电磁插装阀YV4失电接通，电磁插装阀YV1、电磁插装阀YV2得电接通，电磁插装阀YV3失电关闭，液压油通过油管经进油口P1、比例伺服阀PLV的进油口P、比例伺服阀PLV的B口、电磁插装阀YV4进入上顶栓油缸的有杆腔1；液压油回油通过油管经上顶栓油缸的无杆腔2、电磁插装阀YV2、电磁插装阀YV1、比例伺服阀PLV的回油口T进入回油口T1，上顶栓3带动压砣4下降，下降速度由密炼机主PLC控制比例伺服阀PLV的开启量确定，下降行程由行程开关7控制。
当加压时，电磁插装阀YV2、电磁插装阀YV3得电接通，电磁插装阀YV1失电关闭，电磁插装阀YV4失电接通，液压油通过油管经进油口P1、比例伺服阀PLV的进油口P、比例伺服阀PLV的B口、电磁插装阀YV4进入上顶栓油缸的有杆腔1；液压油回油通过油管经上顶栓油缸的无杆腔2、电磁插装阀YV2、电磁插装阀YV3进入回油口T2，实现对上顶栓3的加压，压砣4对胶料密炼，上顶栓3的压力由密炼机主PLC设定，有杆腔压力传感器6检测的压力信号反馈到密炼机主PLC，通过比例伺服阀PLV的开启量实现上顶栓3的压力控制。
当浮砣时，电磁插装阀YV1失电关闭，电磁插装阀YV2、电磁插装阀YV3得电接通，电磁插装阀YV4得电关闭，上顶栓3的压力为零，压砣4随胶料上下浮动。
本实用新型上顶栓的压力和速度控制由密炼机主PLC控制，由密炼机主PLC控制实现上顶栓的上升、下降、加压、浮砣。且在上顶栓3的压力闭环控制中，上顶栓油缸的无杆腔2的压力不参与控制，仅对上顶栓油缸的有杆腔1进行压力控制，即电磁插装阀YV3得电将上顶栓油缸的无杆腔2与回油口T2连接，使上顶栓油缸的无杆腔2的压力接近于零压。这样，消除了压力跃变的影响，上顶栓油缸动态工作不会出现气蚀现象而引起振动问题，现场压力标定和调试比较方便，且根据PID算法，不需再考虑油缸面积比问题。特别是可以使上顶栓3的压力和速度，直接由密炼机主PLC控制，不需要单独的PLC来控制上顶栓3的压力与速度，也无须考虑密炼机主PLC的类型，应用简单可靠，现场调试简单。
最重要的意义在于：改进后的密炼机通过密炼机主PLC设定，可以实现浮砣炼胶或排胶工艺，在炼胶过程中，上顶栓3压力稳定，将改善上顶栓3的压料性能，提高炼胶质量。

Claims (1)

1.一种密炼机上顶栓油缸液压控制装置，它包括由液压泵、蓄能器组成的动力源，其特征是液压油一路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV1、电磁插装阀YV2与上顶栓油缸的无杆腔连接；另一油路通过油管经进油口P1、比例伺服阀PLV、电磁插装阀YV4与上顶栓油缸的有杆腔连接，上顶栓油缸的有杆腔通过上升差动单向阀与进油口P1连接；电磁插装阀YV1、电磁插装阀YV2之间还连接有与回油口T2连接的电磁插装阀YV3；比例伺服阀PLV的进油口P与进油口P1连接，比例伺服阀PLV的回油口T与回油口T1连接。
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CN103671293A (zh) * 2013-12-06 2014-03-26 益阳橡胶塑料机械集团有限公司 密炼机上顶栓油缸液压控制方法及装置
EP3315792A4 (en) * 2015-06-24 2019-03-13 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) HYDRAULIC DRIVE DEVICE AND METHOD FOR CONTROLLING THEREOF
WO2021115708A1 (de) * 2019-12-13 2021-06-17 Robert Bosch Gmbh Hydraulische einrichtung zur betätigung eines stempels eines innenmischers, und darauf bezogenes verfahren
WO2021115638A1 (de) * 2019-12-13 2021-06-17 Robert Bosch Gmbh Hydraulische einrichtung zur betätigung eines stempels eines innenmischers, und darauf bezogenes verfahren

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Publication number Priority date Publication date Assignee Title
CN103671293A (zh) * 2013-12-06 2014-03-26 益阳橡胶塑料机械集团有限公司 密炼机上顶栓油缸液压控制方法及装置
CN103671293B (zh) * 2013-12-06 2016-05-25 益阳橡胶塑料机械集团有限公司 密炼机上顶栓油缸液压控制方法及装置
EP3315792A4 (en) * 2015-06-24 2019-03-13 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) HYDRAULIC DRIVE DEVICE AND METHOD FOR CONTROLLING THEREOF
WO2021115708A1 (de) * 2019-12-13 2021-06-17 Robert Bosch Gmbh Hydraulische einrichtung zur betätigung eines stempels eines innenmischers, und darauf bezogenes verfahren
WO2021115638A1 (de) * 2019-12-13 2021-06-17 Robert Bosch Gmbh Hydraulische einrichtung zur betätigung eines stempels eines innenmischers, und darauf bezogenes verfahren
CN114829096A (zh) * 2019-12-13 2022-07-29 罗伯特·博世有限公司 用于操纵内部混合器的柱塞的液压装置以及与此相关的方法

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