CN203110311U - Drive mechanism and blowing machine wall thickness control system adopting same - Google Patents

Drive mechanism and blowing machine wall thickness control system adopting same Download PDF

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Publication number
CN203110311U
CN203110311U CN 201320062217 CN201320062217U CN203110311U CN 203110311 U CN203110311 U CN 203110311U CN 201320062217 CN201320062217 CN 201320062217 CN 201320062217 U CN201320062217 U CN 201320062217U CN 203110311 U CN203110311 U CN 203110311U
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servomotor
running state
drive
driver
state parameter
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CN 201320062217
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Chinese (zh)
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孙凌财
曹峥
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NINGBO HONGXUN TECHNOLOGY CO LTD
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NINGBO HONGXUN TECHNOLOGY CO LTD
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Abstract

The application discloses a drive mechanism and a blowing machine wall thickness control system adopting the same. The drive mechanism is a servo direct-drive mechanism, and comprises a driver, a servo motor, a reducer, a speed sensor and a ball screw. The driving process of the drive mechanism is the electric drive, compared with the hydraulic drive mechanism in the prior art, the drive mechanism is not needed to consume hydraulic oil, so that the energy is saved, and the energy consumption and working noise are reduced. According to the application, the driver in the drive mechanism controls the running state of the servo motor directly based on computed parameter target value of the running state, and the whole control process is controlled by an electrical signal, so that compared with the conventional manner that the hydraulic oil is adopted as a drive medium, the response speed is increased; and meanwhile, the ball screw has high-precision characteristic, can realize micro feeding amount, and can control the short-distance movement of a core shaft, so that the control precision of the whole wall thickness control system is increased.

Description

A kind of driving mechanism and use the blow moulding machine wall thickness control system of this mechanism
Technical field
The application relates to the hollow blow molding technical field, particularly relates to a kind of driving mechanism and uses the blow moulding machine wall thickness control system of this mechanism.
Background technology
Plastic containers are extensive use in daily life, and in the method for plastic containers moulding, the hollow blow molding technology is most widely used general.The hollow blow molding technology is to make the type embryo of plasticizing be close to the mould inner wall moulding by air pressure, and the mode of production of type embryo is extruded type, is about to plastic cement melt basis from the core rod slit of different shape of heating plasticizing, forms the tubular type embryo of different shape.
In the hollow plastic container goods, because its requirement of strength has been stipulated minimum wall thickness (MINI W.), therefore need the wall thickness of wall thickness control system control type embryo.And present wall thickness control system reaches wall thickness control by hydraulic drive mechanism, as shown in Figure 1, hydraulic drive mechanism mainly comprises: oil sources 1, oil cylinder 2, proportioning valve 3, electronic ruler 4, wherein, drive piston in the oil cylinder 2 by oil sources 1, gather position of piston data in the oil cylinder 2 by electronic ruler 4, after the position of piston data that obtain are analyzed through controller 5, obtain an analog signal and offer proportioning valve 3, proportioning valve 3 is exported a voltage signal according to described analog signal, displacement according to described voltage signal control oil cylinder 2 inner carriers drives mandrel 6 motions by oil cylinder.
The driving mechanism of traditional wall thickness control system adopts hydraulic oil as drive energy, the energy resource consumption height, the operating noise of hydraulic drive mechanism is big, and hydraulic drive mechanism adopts the movement of electronic ruler and proportional valve control oil cylinder inner carrier, response speed is low, and control accuracy is low.
The utility model content
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of driving mechanism and uses the blow moulding machine wall thickness control system of this mechanism, with cut down the consumption of energy, noise, and improve response speed and control accuracy, technical scheme is as follows:
The application provides a kind of driving mechanism, is applied to blow moulding machine wall thickness control system, comprising: driver, servomotor, decelerator, velocity sensor and ball-screw, wherein:
The signal input part of described velocity sensor connects the output of described servomotor, and signal output part connects the first input end of described driver, and the running state parameter detected value of the described servomotor that collects is offered described driver;
Second input of described driver is used for receiving the running state parameter setting value of described servomotor, output is connected with the input of described servomotor, described driver sets value according to described running state parameter, and described running state parameter detected value, calculate the running status ginseng desired value of described servomotor, and the rotating speed of controlling described servomotor reaches described running state parameter desired value;
The input of described decelerator connects the output of described servomotor, the output of described decelerator connects described ball-screw, after described decelerator slows down the rotating speed of described servomotor, promote described ball-screw motion, so that described ball-screw drives the mandrel motion of described blow moulding machine wall thickness control system.
Preferably, described driver is according to the running state parameter setting value and the described running state parameter detected value that receive, passing ratio-integration-differentiate, obtain the running state parameter desired value of described servomotor, wherein said running state parameter desired value comprises rotating speed and/or the moment of torsion of described servomotor.
Preferably, described velocity sensor is encoder.
The application also provides a kind of blow moulding machine wall thickness control system, comprising: controller, mandrel and above-mentioned driving mechanism, wherein:
Described controller links to each other with the driver of described driving mechanism, by calculating the running state parameter setting value of the servomotor in the described driving mechanism, and offers the driver in the described driving mechanism according to the wall thickness pre-set parameter;
Described mandrel is connected with the ball-screw of described driving mechanism, drives described mandrel motion by described ball-screw.
Preferably, described controller is single-chip microcomputer.
Preferably, described controller is computer.
The technical scheme that is provided by above the embodiment of the present application as seen, described driving mechanism comprises, driver, servomotor, decelerator, velocity sensor and ball-screw.By the driver drives servomotor, by the mechanical energy of decelerator with the low moment of torsion of high rotating speed of servomotor output, be converted into the mechanical energy of the high moment of torsion of the slow-speed of revolution, thereby drive the ball-screw motion; The mandrel that is driven in the blow moulding machine wall thickness control system by ball-screw moves; Velocity sensor is gathered the running state parameter of servomotor in real time, and offer driver, running state parameter by the described servomotor of driver foundation calculates the running state parameter desired value again, and the running status of controlling described servomotor reaches described running state parameter desired value, thereby realizes the thick control of accurate type germ wall.Because the driving mechanism that the application provides and blow moulding machine wall thickness control system adopt servo-actuating device, adopt electricity to drive, compare with hydraulic drive mechanism of the prior art, need not to consume hydraulic oil, therefore save the energy, reduced energy consumption and operating noise, improved response speed, and, ball-screw itself just possesses the high accuracy characteristic, and can realize little amount of feeding, can control the mandrel small distance and move, therefore, improved the control accuracy of whole wall thickness control system.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of traditional hydraulic drive mechanism;
Fig. 2 is the structural representation of a kind of blow moulding machine wall thickness of the embodiment of the present application control system driving mechanism;
Fig. 3 is the structural representation of a kind of blow moulding machine wall thickness of the embodiment of the present application control system.
The specific embodiment
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
See also Fig. 2, show the structural representation of a kind of blow moulding machine wall thickness of the embodiment of the present application control system driving mechanism.
Described driving mechanism comprises: driver 11, servomotor 12, decelerator 13, velocity sensor 14 and ball-screw 15.
The signal input part of velocity sensor 14 and described servomotor 12 link, and signal output part connects driver 11, and velocity sensor 14 is used for gathering servomotor 12 running state parameters, and offers driver 11.
Wherein, described running state parameter comprises the relevant parameter such as rotating speed, moment of torsion of servomotor 12.
During concrete enforcement, described velocity sensor 14 can realize by encoder, and encoder is the running state parameter of the servomotor that will collect, works out, is converted to the signal of telecommunication, rate signal can be converted to the signal of telecommunication that driver can be identified.
The output of driver 11 is connected with servomotor 12, is used for driving servomotor 12 runnings.Driver 11 is power sources of entire mechanism, and each parts in the mechanism are directly or indirectly controlled by driver all.
Servomotor 12 is connected with decelerator 13, ball-screw 15 connection reducers 13, decelerator 13 is used for the mechanical energy of the low moment of torsion of high rotating speed of servomotor 12 outputs is converted into the mechanical energy of the high moment of torsion of the slow-speed of revolution, and offers ball-screw 15, and then is moved by ball-screw 15 drive mandrels.
Wherein, decelerator is a kind of Poewr transmission mechanism, utilizes the velocity transducer of gear, and the rotating speed of servomotor is reduced to desired rotating speed.
Ball-screw is to be converted to straight-line actuated element with rotatablely moving, and has high-precision characteristic.Ball-screw utilizes the ball running, and therefore, the staring torque that needs is minimum, and can realize accurate little feeding, therefore, has improved the control accuracy of driving mechanism.
The driving process of described blow moulding machine wall thickness control system driving mechanism is as follows:
The running state parameter detected value of the servomotor 12 that driver 11 collects according to velocity sensor 14, and the running state parameter that receives setting value, carry out the PID computing and obtain the running state parameter desired value of servomotor, such as, the rotating speed of servomotor, moment of torsion; And the current running status of regulating servomotor 12 in real time, make it reach described running state parameter desired value, this feedback regulation process can constantly be carried out, and satisfies the wall thickness technological requirement up to the running status of whole wall thickness control system.
Decelerator 13 drives ball-screw 15 and moves after the mechanical energy of the low moment of torsion of high rotating speed of servomotor 12 output is converted into the mechanical energy of the high moment of torsion of the slow-speed of revolution, and then drives mandrel 16 and move, and the movement by mandrel 16 reaches the thick control of type germ wall.
The type embryo of general wall thickness is divided into expanded type and contraction type, and wherein, in the expanded type control mode, when mandrel moves up, perhaps the speed that moves up of mandrel is fast, the wall thickness attenuation of the type embryo that then obtains; When mandrel moves down, perhaps the speed that moves down of mandrel is fast, then the wall thickness thickening of type embryo.In the contraction type control mode, when mandrel moves up, or the speed that moves up of mandrel is when fast, the wall thickness thickening of type embryo; When mandrel moves down, or the speed that moves down of mandrel is when fast, the wall thickness attenuation of type embryo.Therefore speed and the distance that moves up and down by the control ball-screw reaches the thick control requirement of type germ wall.
The driving mechanism of the blow moulding machine wall thickness control system that present embodiment provides adopts signal of telecommunication type of drive, compares with hydraulic drive mechanism of the prior art, need not to consume hydraulic oil, has therefore saved the energy, has reduced energy consumption and operating noise.Because the driving mechanism of described blow moulding machine wall thickness control system adopts electric type of drive, driver is directly controlled the running status of servomotor according to the running state parameter desired value that calculates, this control procedure is all controlled by the signal of telecommunication, compare as the mode of drive medium with existing employing hydraulic oil, improved response speed.And ball-screw itself just possesses the high accuracy characteristic, and can realize little amount of feeding, can control the mandrel small distance and move, and therefore, has improved the control accuracy of whole wall thickness control system.
The application also provides a kind of blow moulding machine wall thickness control system, as shown in Figure 3, described blow moulding machine wall thickness control system comprises: above-mentioned driving mechanism 110, controller 120 and mandrel 130, wherein, driving mechanism 110 comprises driver 111, servomotor 112, decelerator 113, velocity sensor 114 and ball-screw 115.
Controller 120, be used for receiving the wall thickness setup parameter of the plastic product of processing, according to the corresponding relation between the running state parameter of default wall thickness and servomotor, calculate the running state parameter setting value when the servomotor of anterior wall thickness setup parameter correspondence, and export the corresponding signal of telecommunication and be delivered to driver 111.
Velocity sensor 114 is gathered the running state parameter detected value of servomotor 112, and offers described driver 111.
Driver 111, be used for the corresponding signal of telecommunication of running state parameter setting value according to the servomotor of the described controller transmission that receives, and the running state parameter detected value of the servomotor that provides of described velocity sensor 114, according to PID(Proportional-Integral-Differential, proportional-integral-differential) computing, calculate the running state parameter desired value, and the driving servomotor reaches described running state parameter desired value.
Decelerator 113 after being used for mechanical energy with the low moment of torsion of high rotating speed of servomotor 112 outputs and being converted into the mechanical energy of the high moment of torsion of the slow-speed of revolution, drives ball-screw 115 and moves, and moves thereby drive mandrels 130 by ball-screw 115.
The blow moulding machine wall thickness control system that present embodiment provides, the driving mechanism that adopts is servo direct driving mechanism, comprise, driver, servomotor, decelerator, velocity sensor and ball-screw, the whole driving process of this driving mechanism is signal of telecommunication type of drive, compares with hydraulic drive mechanism of the prior art, need not to consume hydraulic oil, therefore save the energy, reduced energy consumption and operating noise.Because the driver in the described driving mechanism is directly according to the running state parameter desired value that calculates, the running status of control servomotor, whole control process all by signal of telecommunication control, is compared as the mode of drive medium with existing employing hydraulic oil, has improved response speed.And ball-screw itself just possesses the high accuracy characteristic, and can realize little amount of feeding, can control the mandrel small distance and move, and therefore, has improved the control accuracy of whole wall thickness control system.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses is difference with other embodiment.
The above only is the application's the specific embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.

Claims (6)

1. a driving mechanism is applied to blow moulding machine wall thickness control system, it is characterized in that, comprising: driver, servomotor, decelerator, velocity sensor and ball-screw, wherein:
The signal input part of described velocity sensor connects the output of described servomotor, and signal output part connects the first input end of described driver, and the running state parameter detected value of the described servomotor that collects is offered described driver;
Second input of described driver is used for receiving the running state parameter setting value of described servomotor, output is connected with the input of described servomotor, described driver sets value according to described running state parameter, and described running state parameter detected value, calculate the running status ginseng desired value of described servomotor, and the rotating speed of controlling described servomotor reaches described running state parameter desired value;
The input of described decelerator connects the output of described servomotor, the output of described decelerator connects described ball-screw, after described decelerator slows down the rotating speed of described servomotor, promote described ball-screw motion, so that described ball-screw drives the mandrel motion of described blow moulding machine wall thickness control system.
2. driving mechanism according to claim 1, it is characterized in that, described driver is according to the running state parameter setting value and the described running state parameter detected value that receive, passing ratio-integration-differentiate, obtain the running state parameter desired value of described servomotor, wherein said running state parameter desired value comprises rotating speed and/or the moment of torsion of described servomotor.
3. driving mechanism according to claim 1 and 2 is characterized in that, described velocity sensor is encoder.
4. a blow moulding machine wall thickness control system is characterized in that, comprising: each described driving mechanism of controller, mandrel and claim 1-3, wherein:
Described controller links to each other with the driver of described driving mechanism, by calculating the running state parameter setting value of the servomotor in the described driving mechanism, and offers the driver in the described driving mechanism according to the wall thickness pre-set parameter;
Described mandrel is connected with the ball-screw of described driving mechanism, drives described mandrel motion by described ball-screw.
5. system according to claim 4 is characterized in that, described controller is single-chip microcomputer.
6. system according to claim 4 is characterized in that, described controller is computer.
CN 201320062217 2013-01-31 2013-01-31 Drive mechanism and blowing machine wall thickness control system adopting same Active CN203110311U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107073795A (en) * 2014-09-24 2017-08-18 日精Asb机械株式会社 Prefabricated component conveying device, prefabricated component carrying method and blow molding apparatus
CN111186120A (en) * 2018-11-15 2020-05-22 中达电子零组件(吴江)有限公司 Control method and system of electric bottle blowing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107073795A (en) * 2014-09-24 2017-08-18 日精Asb机械株式会社 Prefabricated component conveying device, prefabricated component carrying method and blow molding apparatus
CN111186120A (en) * 2018-11-15 2020-05-22 中达电子零组件(吴江)有限公司 Control method and system of electric bottle blowing machine

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