CN103696999A - Stretcher control system - Google Patents
Stretcher control system Download PDFInfo
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- CN103696999A CN103696999A CN201310711065.2A CN201310711065A CN103696999A CN 103696999 A CN103696999 A CN 103696999A CN 201310711065 A CN201310711065 A CN 201310711065A CN 103696999 A CN103696999 A CN 103696999A
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- stretcher
- variable displacement
- displacement pump
- speed
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Abstract
The invention discloses a stretcher control system. The stretcher control system comprises a power module and a control module, wherein the power module is used for provided stretching power for a stretcher and particularly is a variable pump; the control module is used for control the variable pump to work with various flows and further to drive the stretcher to work with corresponding stretching forces. By controlling the variable pump through the control module, the output flow of the variable pump can be changed, so that the stretcher can avoid correspondingly-changed stretching speed instead of a fixed speed, further various stretching speeds of the stretcher can be achieved for various stretching materials to meet the requirements of various practical stretching processes, and meanwhile, the stretching quality can be higher.
Description
Technical field
The application relates to stretcher control field, particularly relates to a kind of stretcher control system.
Background technique
At metal-processing industry, the degree of expanding with heat and contract with cold due to the fabricated metals after quenching is different, and deformation can occur the fabricated metals of moulding originally, now needs to utilize stretcher (being also stretcher leveler) that crooked fabricated metals is stretching.
Stretcher of the prior art is by adopting metering pump as power source, due to the output of metering pump be can not regulate quantitatively, the speed that stretcher is stretched can only be a fixing speed, fabricated metals for different size, different materials, fixing draw speed can not meet actual drawing craft needs, makes drawing effect can not meet actual demand.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of stretcher control system, realizes stretcher speed adjustable by variable displacement pump and control module, can meet different stretch technique needs.
To achieve these goals, the technological scheme that the application provides is as follows:
A stretcher control system, comprising:
Power plant module, for the stretching power of described stretcher is provided, described power plant module is specially variable displacement pump;
Control module, for controlling described variable displacement pump with different flow work, described variable displacement pump is when different flow is worked, and described stretcher is with corresponding tensile force work.
Preferably, described control module comprises:
Order receiving element, for receiving the variable displacement pump operational order of input;
Analog amount converting unit, for being converted to analogue signal by described operational order;
Proportional amplifier, for amplifying described analogue signal;
Level and smooth potentiometer, for the described variable displacement pump servo voltage of the linear adjusting of analogue signal after amplifying according to described proportional amplifier, described variable displacement pump servo voltage is for controlling the flow of the output correspondence of described variable displacement pump.
Preferably, described stretcher comprises main plunger, and described system also comprises:
Speed testing module, the speed moving for detection of stretcher main plunger.
Preferably, described speed testing module is specially incremental optical-electricity encoder.
Preferably, described stretcher comprises master cylinder, and described master cylinder is for the output flow motion according to described variable displacement pump, and described system also comprises:
Pressure testing module, for detection of the pressure in described stretcher master cylinder.
Preferably, described control module also comprises:
Speed computing unit, the main plunger travelling speed detecting for the described speed testing module of foundation is calculated the draw speed of described stretcher;
Tensile elongation computing unit, for calculating tensile elongation according to described draw speed.
Preferably, described control module also comprises:
Pulling force computing unit, the master cylinder pressure detecting for the described Pressure testing module of foundation calculates the tensile force of described stretcher.
Preferably, described system also comprises:
Draw speed length display modular, for showing described draw speed numerical value and tensile elongation numerical value.
Preferably, described system also comprises:
Tensile force display modular, for showing described tensile force numerical value.
Preferably, described system also comprises at least one solenoid valve, and described solenoid valve is used for controlling described stretcher and advances or retreat.
Preferably, described system also comprises electromagnetism relaying, and described electromagnetism relaying is connected with described solenoid valve, control module respectively, for reducing the load of described control module output point.
Preferably, described system also comprises variable displacement pump motor, and described variable displacement pump motor is used for starting described variable displacement pump;
Described system also comprises soft initiator, and described soft initiator is connected with described variable displacement pump motor, control module respectively, for reducing the starting current of described variable displacement pump motor.
The stretcher control system that the embodiment of the present application provides, by control module controlled variable pump, the output flow of variable displacement pump can be changed, thereby the draw speed of stretcher can be changed accordingly, rather than only apply a fixing speed, make the difference that stretcher can strain stretch material and realize different draw speeds, can meet actual various drawing craft needs, stretching quality is also higher.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiments that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of a kind of stretcher control system that Fig. 1 provides for the embodiment of the present application;
The schematic diagram of the control module that Fig. 2 provides for the embodiment of the present application;
The schematic diagram of the another kind of stretcher control system that Fig. 3 provides for the embodiment of the present application.
Embodiment
In order to make those skilled in the art person understand better the technological scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technological scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiments.Embodiment based in the application, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all should belong to the scope of the application's protection.
The embodiment of the present application provides a kind of stretcher control system, as shown in Figure 1, comprising:
Described variable displacement pump is as the power source of stretcher, for the work of stretcher provides essential power, variable displacement pump is different from metering pump, metering pump can only be with the flow output of fixing, stretcher can only be moved according to fixing speed, and variable displacement pump can be exported the flow of different sizes, make stretcher can carry out the motion of friction speed, when variable displacement pump output flow is larger, the draw speed of stretcher is just faster, at variable displacement pump output flow hour, stretcher just moves with less speed, has realized stretcher with friction speed work.
Described control module, for the flow of controlled variable pump, as shown in Figure 2, specifically comprises:
Order receiving element 201, for receiving the variable displacement pump operational order of input;
Order receiving element is for receiving the variable displacement pump operational order of input, operational order is generally to adjust the operating rate of stretcher, corresponding actual of different operating rates is exactly different variable displacement pump output flows, concrete order receiving element can be the operation panel with button, by pressing corresponding speed button, input corresponding operational order.
Analog amount converting unit 202, for being converted to analogue signal by described operational order;
Because operational order is generally digital quantity, and in actual use, operational order need to be converted to analogue signal.
Proportional amplifier 203, for amplifying described analogue signal;
Because the analogue signal after conversion is less, also need analogue signal to amplify.
Level and smooth potentiometer 204, for the described variable displacement pump servo voltage of the linear adjusting of analogue signal after amplifying according to described proportional amplifier, described variable displacement pump servo voltage is for controlling the flow of the output correspondence of described variable displacement pump.
The final control object of analogue signal is variable displacement pump, in the embodiment of the present application, described control module also comprises level and smooth potentiometer, when variable displacement pump is worked with some flows, the servo voltage of variable displacement pump is also certain, if now need to change the draw speed of stretcher, the output flow generation respective change that just needs variable displacement pump, and if variable displacement pump directly jumps to the flow after change, current servo voltage is directly adjusted into the servo voltage after change, such adjustment mode is larger to the impact of variable displacement pump, the embodiment of the present application realizes the level and smooth adjustment of variable displacement pump by level and smooth potentiometer, receive after new operational order, level and smooth potentiometer is when adjusting to new servo voltage, can be by the mode of slowly sliding, make servo voltage smoothly adjust to slowly new servo voltage, and then make the output flow of variable displacement pump adjust to new output flow in level and smooth mode, impact to variable displacement pump is very little, make the tension variations of stretcher also more level and smooth, to stretched fabricated metals, impact also less, stretching quality is also higher.
Control module in the embodiment of the present application can be PLC control module, and as Siemens S7-200PLC etc., concrete model the application does not limit.
The stretcher control system that the embodiment of the present application provides, by control module controlled variable pump, the output flow of variable displacement pump can be changed, thereby the draw speed of stretcher can be changed accordingly, rather than only apply a fixing speed, make the difference that stretcher can strain stretch material and realize different draw speeds, can meet actual various drawing craft needs, stretching quality is also higher.
Described stretcher comprises main plunger, and as shown in Figure 3, described system also comprises:
Speed testing module 300, the speed moving for detection of stretcher main plunger.
Control system in the embodiment of the present application also comprises speed testing module, this speed testing module can be specifically incremental optical-electricity encoder, travelling speed for detection of stretcher main plunger, concrete process is that photoelectric encoder drives synchronous rotation by a tape measure that is fixed on stretcher main plunger front end, the photoelectric encoder of selecting circles and can produce 1024 pulses, and with the distance that the customization wheel disc of the coaxial main plunger of photoelectric encoder circles be 1024mm, the namely corresponding pulse of 1mm, main plunger motion 1mm will produce a pulse like this.
Control module can also comprise speed computing unit 205, calculates the draw speed of described stretcher for the main plunger travelling speed detecting according to described speed testing module.
The number of pulses that speed computing unit produces by calculating photoelectric encoder device per second, thereby by calculating known stretcher draw speed per second.
Tensile elongation computing unit 206, by calculated pulling speed, can be according to S=Vt by calculating tensile elongation, S-tensile elongation, V-draw speed, t-stretching time.
Described stretcher comprises master cylinder in the embodiment of the present application, and described master cylinder is for the output flow motion according to described variable displacement pump, and described system also comprises:
Pressure testing module 400, for detection of the pressure in described stretcher master cylinder.
Described control module also comprises:
Pulling force computing unit 207, the master cylinder pressure detecting for the described Pressure testing module of foundation calculates the tensile force of described stretcher.
The detection range of Pressure testing module can be 0～40MPa, and its electrical signal output 4～20mA, delivers to pulling force computing unit the signal detecting, then by pulling force computing unit, carries out pulling force conversion and calculate, and Pressure testing module can adopts pressure sensor.
Described control module also comprises:
Draw speed length display modular 208, for showing described draw speed numerical value and tensile elongation numerical value.
Tensile force display unit 209, for showing described tensile force numerical value.
By above-mentioned computing unit, calculating after draw speed, tensile elongation and tensile force, these data can also shown, facilitating user to understand the working state of stretcher.
Described system also comprises at least one solenoid valve 500, and described solenoid valve is used for controlling described stretcher and advances or retreat.
Described system also comprises electromagnetism relaying 600, and described electromagnetism relaying is connected with described solenoid valve, control module respectively, for reducing the load of described control module output point.
Described electromagnetism relaying can adopt 24V electromagnetism relaying, plays the effect of described control module and solenoid valve isolation, effectively reduces the load of control module output point, thereby increases the service life.Solenoid valve is the performer of stretcher action, different solenoid valves obtain electric can restrained stretching machine forward-reverse.
Described system also comprises variable displacement pump motor 700, and described variable displacement pump motor is used for starting described variable displacement pump;
Described system also comprises soft initiator 800, and described soft initiator is connected with described variable displacement pump motor, control module respectively, for reducing the starting current of described variable displacement pump motor.
The effect of soft initiator is to reduce inrush current, guarantees that motor normally starts.The working principle of this soft starter is in motor starting process, by control circuit, control the size of the angle of flow of thyristor, the rule that the starting current of motor sets according to the requirement of operating current is changed, thereby make size, starting voltage, start mode and the starting time of the starting current of motor can be according to actual conditions adjustment, make motor in optimum start state, reduce the loss of starting power simultaneously
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
It should be noted that, the above is only a part of preferred embodiment of present techniques scheme, make those skilled in the art can fully understand or realize the application, rather than whole embodiment, General Principle as defined herein can be in the situation that do not depart from the application's spirit or scope, realization in other embodiments.Therefore; based on above embodiment; for those skilled in the art; do not depart from the application's principle, do not making under creative work prerequisite, can also make multiple apparent modification and retouching; the every other embodiment who obtains by these modifications and retouching; can be applied to present techniques scheme, these do not affect the application's realization, all should belong to the application's protection domain.Therefore, the application will can not be restricted to these embodiments shown in this article, but will accord with principle disclosed herein and features of novelty the widest consistent scope.
Above the application is described in detail, application herein can specific case be set forth the application's principle and mode of execution, above embodiment's explanation is just for helping to understand the application's method and core concept thereof, simultaneously, for one of ordinary skill in the art, the thought according to the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (12)
1. a stretcher control system, is characterized in that, comprising:
Power plant module, for the stretching power of described stretcher is provided, described power plant module is specially variable displacement pump;
Control module, for controlling described variable displacement pump with different flow work, described variable displacement pump is when different flow is worked, and described stretcher is with corresponding tensile force work.
2. system according to claim 1, is characterized in that, described control module comprises:
Order receiving element, for receiving the variable displacement pump operational order of input;
Analog amount converting unit, for being converted to analogue signal by described operational order;
Proportional amplifier, for amplifying described analogue signal;
Level and smooth potentiometer, for the described variable displacement pump servo voltage of the linear adjusting of analogue signal after amplifying according to described proportional amplifier, described variable displacement pump servo voltage is for controlling the flow of the output correspondence of described variable displacement pump.
3. system according to claim 1, is characterized in that, described stretcher comprises main plunger, and described system also comprises:
Speed testing module, the speed moving for detection of stretcher main plunger.
4. system according to claim 1, is characterized in that, described speed testing module is specially incremental optical-electricity encoder.
5. system according to claim 1, is characterized in that, described stretcher comprises master cylinder, and described master cylinder is for the output flow motion according to described variable displacement pump, and described system also comprises:
Pressure testing module, for detection of the pressure in described stretcher master cylinder.
6. system according to claim 3, is characterized in that, described control module also comprises:
Speed computing unit, the main plunger travelling speed detecting for the described speed testing module of foundation is calculated the draw speed of described stretcher;
Tensile elongation computing unit, for calculating tensile elongation according to described draw speed.
7. system according to claim 5, is characterized in that, described control module also comprises:
Pulling force computing unit, the master cylinder pressure detecting for the described Pressure testing module of foundation calculates the tensile force of described stretcher.
8. system according to claim 6, is characterized in that, described system also comprises:
Draw speed length display modular, for showing described draw speed numerical value and tensile elongation numerical value.
9. system according to claim 7, is characterized in that, described system also comprises:
Tensile force display modular, for showing described tensile force numerical value.
10. system according to claim 1, is characterized in that, described system also comprises at least one solenoid valve, and described solenoid valve is used for controlling described stretcher and advances or retreat.
11. systems according to claim 10, is characterized in that, described system also comprises electromagnetism relaying, and described electromagnetism relaying is connected with described solenoid valve, control module respectively, for reducing the load of described control module output point.
12. systems according to claim 1, is characterized in that, described system also comprises variable displacement pump motor, and described variable displacement pump motor is used for starting described variable displacement pump;
Described system also comprises soft initiator, and described soft initiator is connected with described variable displacement pump motor, control module respectively, for reducing the starting current of described variable displacement pump motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711065.2A CN103696999B (en) | 2013-12-20 | 2013-12-20 | A kind of stretcher control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711065.2A CN103696999B (en) | 2013-12-20 | 2013-12-20 | A kind of stretcher control system |
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| CN103696999A true CN103696999A (en) | 2014-04-02 |
| CN103696999B CN103696999B (en) | 2017-01-04 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1085654A1 (en) * | 1982-05-17 | 1984-04-15 | Государственный Проектный Институт "Электротяжхимпроект" | System of controlling flattening and stretching machine |
| CN2073779U (en) * | 1990-09-07 | 1991-03-27 | 临海市东方发动机部件厂 | Tensile hydraulic press |
| CN2637024Y (en) * | 2003-08-26 | 2004-09-01 | 苏州市越海拉伸机械有限公司 | Digital controlled hydraulic double acting stretching machine |
| CN201632530U (en) * | 2009-07-07 | 2010-11-17 | 袁吉辉 | Novel double-motion stretching hydraulic machine |
| US20110231075A1 (en) * | 2008-02-29 | 2011-09-22 | Bhai Aziz A | Patient support apparatus with drive wheel speed control |
| CN203019708U (en) * | 2012-11-30 | 2013-06-26 | 江苏沃得机电集团有限公司 | Hydraulic control system |
-
2013
- 2013-12-20 CN CN201310711065.2A patent/CN103696999B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1085654A1 (en) * | 1982-05-17 | 1984-04-15 | Государственный Проектный Институт "Электротяжхимпроект" | System of controlling flattening and stretching machine |
| CN2073779U (en) * | 1990-09-07 | 1991-03-27 | 临海市东方发动机部件厂 | Tensile hydraulic press |
| CN2637024Y (en) * | 2003-08-26 | 2004-09-01 | 苏州市越海拉伸机械有限公司 | Digital controlled hydraulic double acting stretching machine |
| US20110231075A1 (en) * | 2008-02-29 | 2011-09-22 | Bhai Aziz A | Patient support apparatus with drive wheel speed control |
| CN201632530U (en) * | 2009-07-07 | 2010-11-17 | 袁吉辉 | Novel double-motion stretching hydraulic machine |
| CN203019708U (en) * | 2012-11-30 | 2013-06-26 | 江苏沃得机电集团有限公司 | Hydraulic control system |
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| CN103696999B (en) | 2017-01-04 |
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