CN114833915A - Vibration device with self-correcting function - Google Patents

Vibration device with self-correcting function Download PDF

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Publication number
CN114833915A
CN114833915A CN202210317458.4A CN202210317458A CN114833915A CN 114833915 A CN114833915 A CN 114833915A CN 202210317458 A CN202210317458 A CN 202210317458A CN 114833915 A CN114833915 A CN 114833915A
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China
Prior art keywords
self
servo
vibration
servo motor
vibration table
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CN202210317458.4A
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Chinese (zh)
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CN114833915B (en
Inventor
钟迦
傅鑫源
傅炳煌
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Quangong Machinery Co Ltd
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Quangong Machinery Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0063—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Position Or Direction (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

The invention relates to a vibrating device with a self-correcting function, which detects the dynamic characteristic of a vibrating table in real time to ensure that the whole device is in a most efficient vibration state through self adjustment, and comprises the vibrating table, a servo motor, a servo driver, an acceleration sensor, an alarm and a PLC (programmable logic controller), wherein the PLC executes the following self-correcting program on an eccentric block by combining the acceleration sensor, the servo motor and the servo driver at each monitoring point of the vibrating table: collecting a torque feedback value of a single servo motor in operation; acquiring dynamic parameters uploaded by acceleration sensors at monitoring points on a vibration table in test operation of all servo motors; judging whether the actual dynamic parameter is within the maximum allowable self-adaptive deviation or not, if not, outputting an alarm signal, if so, judging whether the actual dynamic parameter is within the excitation force balance deviation or not, feeding back the parameters of the vibration table through edge calculation, and controlling the servo driver to finely adjust the offset angle of the eccentric block until the actual dynamic parameter is within the excitation force balance deviation.

Description

Vibration device with self-correcting function
The scheme is a divisional application of the invention application entitled self-correcting synchronous vibration device and synchronous correction method of vibration table thereof, and the application number of the mother case is as follows: 2020110455954, parent application date: 2020.09.29.
Technical Field
The present invention relates to a vibration device having a self-correcting function.
Background
A block machine is a machine for producing novel wall material blocks by adding a small amount of cement into materials such as fly ash, river sand, pebbles, stone powder, fly ash, waste ceramsite slag, smelting slag and the like. The vibrating table is a core component of the block forming machine and can drive a supporting plate and a mold frame which are placed on the block forming machine to vibrate up and down, so that materials in the mold frame are compacted to form a block.
The existing vibrating table confirms the original point in a mechanical bolt mode, has high requirements on machining precision, and the punching deviation can directly cause the eccentric wheel to be scrapped, and the problem is not easy to find out after the eccentric wheel is worn and corroded. Therefore, it is necessary to develop a self-correcting synchronous vibration device and a method for correcting the synchronization of the vibration table.
Disclosure of Invention
The invention aims to provide a vibrating device with a self-correcting function, which can detect the dynamic characteristic of a vibrating table in real time and enable the whole device to be in the most efficient vibration state through self adjustment.
In order to achieve the purpose, the invention adopts the technical scheme that:
a vibration device having a self-correcting function, comprising:
a vibration table;
servo motors which are respectively provided with eccentric blocks for generating exciting force to the vibration table and are internally provided with servo encoders;
the servo driver is used for controlling the relative offset angle and the rotating speed of the corresponding servo motor; and
the PLC is in communication connection with the servo driver and the servo encoder through a Profinet protocol;
the acceleration sensor is respectively correspondingly arranged at each monitoring point of the vibration table, is used for acquiring dynamic parameters of each monitoring point and is electrically connected with the PLC;
the PLC controller is combined with an acceleration sensor, a servo motor and a servo driver at each monitoring point of the vibration table to execute the following self-correcting program on the eccentric block:
s1, collecting a torque feedback value of a single servo motor in operation to obtain an eccentric block zero point of each servo motor;
s2, acquiring dynamic parameters uploaded by acceleration sensors at monitoring points on the vibration table in test operation of all servo motors, and acquiring actual dynamic parameters of the vibration table;
s3, judging whether the actual dynamic parameter is within the maximum allowable self-adaptive deviation, if so, judging whether the actual dynamic parameter is within the exciting force balance deviation: if yes, the vibration table is in the optimal vibration state; if not, the parameters of the vibrating table are fed back through edge calculation, and the servo driver is controlled to finely adjust the offset angle of the eccentric block until the actual dynamic parameters are within the balance deviation of the exciting force.
Preferably, the PLC controller adopts Siemens S7-1500.
Preferably, the servo motor is a servo motor KHZ97CM112M/BR/HR/TF/RH 1L/KK.
Preferably, the servo driver adopts an Ethernet book type servo driver 6SL3120-1TE23-0AD 0.
Preferably, the acceleration sensor is a western horse acceleration sensor.
Preferably, this vibrating device still includes the alarm that is used for indicateing the shaking table to break down, alarm and PLC controller electric connection.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts a PLC controller to combine an acceleration sensor and a servo motor at each monitoring point of a vibration table to self-correct an eccentric block, obtains a torque feedback value of a single servo motor by real-time numerical acquisition of a servo encoder, dynamically monitors the vibration table by adopting the acceleration sensor, obtains a time domain and frequency domain characteristic curve by edge calculation, obtains a vibration amplitude of each monitoring position of the platform by secondary integration of the acceleration, can calculate the relative phase deviation of each monitoring point by the amplitude curve of each monitoring point, and further controls a servo driver to adjust the relative offset angle and the rotating speed of the corresponding servo motor, thereby ensuring that the vibration table is within the excitation force balance deviation.
The invention carries out whole-course closed-loop motion control, meets the requirements of fast, stable and accurate positioning control of the turntable, enables the whole device to be in self adjustment, enables the exciting force to be completely distributed in the direction vertical to the vibrating table, generates horizontal component force as small as possible, enables the vibrating table to be in the most efficient vibration state, improves the compactness of products, simultaneously detects the dynamic characteristic of the vibrating table in real time in the production process, and timely warns and stops when obvious faults occur in the vibrating table, thereby enabling operators to timely overhaul and avoiding batch product problems and product quality accidents.
Drawings
FIG. 1 is a flow chart of a method for synchronously calibrating a vibration table according to the present invention.
FIG. 2 is a block diagram of the self-calibrating synchronous vibrating device of the present invention.
The labels in the figure are: 10. a vibration table; 20. a servo motor; 30. a servo driver; 40. a PLC controller; 51. an acceleration sensor; 52. an alarm.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
The noun explains: the actual dynamic parameters are time domain and frequency domain signals fed back by an acceleration sensor on the vibration table; the maximum allowable deviation is a deviation threshold value of the alarm; the maximum allowable adaptive deviation is a deviation threshold value which allows the servo driver to intervene for fine adjustment; and considering that the vibration table reaches a balanced state within the balance deviation of the exciting force, and finishing zero point correction.
As shown in fig. 1-2, the present embodiment provides a self-correcting synchronous vibrating device, which includes a vibrating table 10 for bearing a supporting plate and a brick-laying forming mold, a servo motor 20, a servo driver 30, an acceleration sensor 51, an alarm 52 for prompting that the vibrating table 10 has a fault, and a PLC controller 40, wherein the servo motor 20 is respectively provided with an eccentric block which is in contact fit with the bottom of the vibrating table 10 and is used for generating an exciting force to the vibrating table 10; the servo driver 30 is connected with the corresponding servo motor 20 and is used for controlling the relative offset angle and the rotating speed of the corresponding servo motor 20; the acceleration sensors 51 are respectively correspondingly installed at each monitoring point of the vibration table 10 and used for acquiring dynamic parameters of each monitoring point; the PLC controller 40 is electrically connected with the alarm 52 and the acceleration sensor 51 and is in communication connection with the servo driver 30 through a Profinet protocol so as to realize seamless connection of data interaction, the Profinet communication technology is efficient, stable and reliable, numerical values are transmitted in real time, and real-time monitoring data of the whole position is faster.
The PLC controller 40 of this embodiment executes a program including a method for implementing a synchronous calibration of a vibration table, where the method for implementing a synchronous calibration of a vibration table employs the PLC controller 40 to self-calibrate an eccentric mass in combination with the acceleration sensor 51 and the servo motor 20 at each monitoring point of the vibration table 10, and includes the following specific steps:
s1, collecting a torque feedback value of a single servo motor 20 in operation, and obtaining an eccentric block zero point of each servo motor 20;
s2, acquiring dynamic parameters uploaded by the acceleration sensor 51 at each monitoring point on the vibration table 10 in the test operation of all the servo motors 20 to obtain actual dynamic parameters of the vibration table 10;
s3, judging whether the actual dynamic parameters are within the maximum allowable self-adaptive deviation or not, if not, outputting an alarm instruction, and if so, executing the next step;
and S4, judging whether the actual dynamic parameter is within the excitation force balance deviation, if so, indicating that the vibration table 10 is in the optimal vibration state, waiting for the PLC 40 to send a vibration signal to change the eccentric block offset angle, otherwise, feeding back the parameters of the vibration table 10 through edge calculation, and controlling the servo driver 30 to finely adjust the eccentric block offset angle until the actual dynamic parameter is within the excitation force balance deviation.
Further, the method for synchronously correcting the vibration table further comprises a step S11 and a step S12, wherein the step S11 is used for judging whether the zero point of the vibration table 10 is corrected or not, if not, the steps S1 to S4 are sequentially executed, and if yes, the step S12 is executed after the high-speed standby is started; the step S12 is to determine whether the actual dynamic parameter of the vibration table 10 is within the maximum allowable deviation, if not, the steps S1 to S4 are sequentially executed, and if so, the steps S3 to S4 are sequentially executed.
In the present embodiment, each servo motor 20 has a servo encoder built therein, and the PLC controller 40 directly reads a torque feedback value of the servo encoder without the PLC controller 40 processing a servo encoder value, and the PLC controller 40 directly acquires the encoder value from the servo drive through Profinet.
In this embodiment, the servo driver 30 adopts an ethernet book-type servo driver 6SL3120-1TE23-0AD0, and compared with a conventional servo driver, the book-type servo driver is energy-saving and consumption-reducing, reduces wiring in a control cabinet, and reduces system fault points, and the system operation meets real-time control requirements. The PLC controller 40 adopts Siemens S7-1500, the servo motor 20 adopts a servo motor KHZ97CM112M/BR/HR/TF/RH1L/KK, and the servo control can realize quick and accurate positioning, and is energy-saving and environment-friendly.
The acceleration sensor 51 adopts a western horse acceleration sensor and is provided with an 8-channel 16-bit data acquisition module, so that data acquisition is more efficient and detection is more accurate, and the synchronous coordination of 8-channel detection time domains can reach the level of 10 microseconds.
The PLC 40 acquires a torque feedback value of a single servo motor 20 through real-time numerical acquisition of a servo encoder, dynamically monitors the vibration table 10 by adopting an acceleration sensor 51, obtains a time domain and frequency domain characteristic curve through edge calculation, obtains a vibration amplitude of each monitoring position of the platform through secondary integration of acceleration, can calculate a relative phase deviation of each monitoring point through the amplitude curve of each monitoring point, and further controls a servo driver 30 to adjust a relative offset angle and a rotating speed of the corresponding servo motor 20, so that the vibration table 10 is within an excitation force balance deviation. The invention carries out whole-course closed-loop motion control, meets the requirements of fast, stable and accurate positioning control of the turntable, enables the whole device to be in self adjustment, enables the exciting force to be completely distributed in the direction vertical to the vibrating table, and generates horizontal component force as small as possible, enables the vibrating table 10 to be in the most efficient vibration state, improves the compactness of products, simultaneously detects the dynamic characteristic of the vibrating table 10 in real time in the production process, and timely warns and stops when the vibrating table 10 has obvious faults, thereby enabling operators to timely overhaul, and avoiding batch product problems and product quality accidents.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (6)

1. Vibration device with self-correcting function, characterized by comprising:
a vibration table;
servo motors which are respectively provided with eccentric blocks for generating exciting force to the vibration table and are internally provided with servo encoders;
the servo driver is used for controlling the relative offset angle and the rotating speed of the corresponding servo motor; and
the PLC is in communication connection with the servo driver and the servo encoder through a Profinet protocol;
the acceleration sensor is respectively correspondingly arranged at each monitoring point of the vibration table, is used for acquiring the dynamic parameters of each monitoring point and is electrically connected with the PLC;
the PLC controller is combined with an acceleration sensor, a servo motor and a servo driver at each monitoring point of the vibration table to execute the following self-correcting program on the eccentric block:
s1, collecting a torque feedback value of a single servo motor in operation to obtain an eccentric block zero point of each servo motor;
s2, acquiring dynamic parameters uploaded by acceleration sensors at monitoring points on the vibration table in test operation of all servo motors, and acquiring actual dynamic parameters of the vibration table;
s3, judging whether the actual dynamic parameter is within the maximum allowable self-adaptive deviation, if yes, judging whether the actual dynamic parameter is within the excitation force balance deviation: if yes, the vibration table is in the optimal vibration state; if not, the parameters of the vibrating table are fed back through edge calculation, and the servo driver is controlled to finely adjust the offset angle of the eccentric block until the actual dynamic parameters are within the balance deviation of the exciting force.
2. The vibration device with a self-correcting function according to claim 1, characterized in that: the PLC controller adopts Siemens S7-1500.
3. The vibration device with a self-correcting function according to claim 1, characterized in that: the servo motor adopts a servo motor KHZ97CM112M/BR/HR/TF/RH 1L/KK.
4. The vibration device with a self-correcting function according to claim 1, characterized in that: the servo driver adopts an Ethernet book type servo driver 6SL3120-1TE23-0AD 0.
5. The vibration device with a self-correcting function according to claim 1, characterized in that: the acceleration sensor adopts a western horse acceleration sensor.
6. The vibration device with a self-correcting function according to claim 1, characterized in that: the vibrating device further comprises an alarm for prompting the vibrating table to break down, and the alarm is electrically connected with the PLC.
CN202210317458.4A 2020-09-29 2020-09-29 Vibration device with self-correcting function Active CN114833915B (en)

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CN112157782B (en) 2022-05-24
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