CN107219815B - Intelligent control system for full-automatic bar shearing assembly line - Google Patents
Intelligent control system for full-automatic bar shearing assembly line Download PDFInfo
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- CN107219815B CN107219815B CN201710549822.9A CN201710549822A CN107219815B CN 107219815 B CN107219815 B CN 107219815B CN 201710549822 A CN201710549822 A CN 201710549822A CN 107219815 B CN107219815 B CN 107219815B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- 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]
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- Accessories And Tools For Shearing Machines (AREA)
- Shearing Machines (AREA)
Abstract
The invention provides an intelligent control system for a full-automatic steel bar shearing assembly line, which is characterized by comprising a feeding mechanism driven by an automatic feeding motor and a discharging mechanism driven by an automatic discharging motor, wherein a shearing mechanism is arranged between the feeding mechanism and the discharging mechanism, a lifting platform is arranged between the shearing mechanism and the feeding mechanism and is connected with the feeding mechanism, a sizing mechanism is arranged on the discharging mechanism, and the sizing mechanism comprises a sizing moving platform driven by a sizing mechanism servo motor and N liftable sizing baffles. The invention has the following advantages: the sizing mechanism adopts a PLC high-speed impulse response to control the on-off of the electromagnetic valve and the hydraulic valve, and adopts a PLC motion control instruction to cooperate with a servo system, so that the steel bars can be positioned, and the control precision of the sheared steel bars is within 1 mm.
Description
Technical Field
The invention discloses an intelligent control system for a full-automatic bar shearing assembly line.
Background
At present, most of steel bar cutting is produced by manually matching with simple shearing equipment, and the method comprises a plurality of technological processes of feeding, sizing, shearing, blanking and the like, and has the defects of low precision, large occupied construction site, low production efficiency, large potential safety hazard and the like. The traditional bar shearing processing method can not meet the requirements of construction units in China, so that bar shearing equipment with safer market, higher working efficiency, more accurate positioning and higher automation degree is needed.
The patent 200820098431.6 provides a synchronous control system for shearing fixed length of a reinforcing steel bar straightening machine, because encoder feedback is used for production length and speed in the scheme, the motor is a common motor, the production speed is 180M/MIN, shearing error is less than +/-2.0 MM, the scheme is low in control precision and speed, and the encoder is easily interfered by external environment, so that the product consistency is poor, and engineering quality is affected.
Patent 201520689378.7 provides a numerical control bar shear line. Because this scheme can not carry out automatic shearing according to reinforcing bar total length and product specification requirement and select, need the operative employee to calculate, the ability requirement to the operative employee is higher, because most cultural levels of building site operative employee are lower, has increased the reinforcing bar waste material rate, increased engineering cost.
Disclosure of Invention
The invention aims to provide an intelligent control system of a full-automatic steel bar shearing assembly line, which can adjust the conveying speed, can scale the required production steel bars and can realize an automatic cutting-in scheme.
In order to achieve the above purpose, the technical scheme of the invention provides an intelligent control system for a full-automatic steel bar shearing assembly line, which is characterized by comprising a feeding mechanism driven by an automatic feeding motor and a discharging mechanism driven by an automatic discharging motor, wherein a shearing mechanism is arranged between the feeding mechanism and the discharging mechanism, a lifting platform is arranged between the shearing mechanism and the feeding mechanism, the lifting platform is connected with the feeding mechanism, a sizing mechanism is arranged on the discharging mechanism, the sizing mechanism comprises a sizing moving platform driven by a sizing mechanism servo motor and N liftable sizing baffles, N is more than or equal to 3, the distance between two adjacent sizing baffles is fixed, xmm is set as a first sizing baffle, the distance between the first sizing baffle and the shearing mechanism is Ymm, after the nth sizing baffle is lifted, n=, 2, …, N, the sizing moving platform moves n×Xmm in the direction away from the feeding mechanism, the feeding mechanism moves downwards until the feeding mechanism moves downwards through the sizing moving platform and the cutting mechanism, the distance between the first sizing baffle and the cutting mechanism is n×Xmm, the distance between the first sizing baffle and the cutting mechanism is equal to the length of the cut steel bar after the first sizing baffle is in the length of the cutting mechanism, and the cutting mechanism is in the length of the cutting mechanism is equal to n+mm, and the cutting bar is conveyed to the cutting mechanism after the cutting and the cutting mechanism is in the length of the cutting position of the cutting mechanism is in the cutting position of the cutting mechanism, and the cutting machine is in the length X mm:
the intelligent control system further comprises a PLC control system, the PLC control system controls the automatic feeding motor and the automatic discharging motor through respective frequency converters, the PLC control system drives the servo motor of the sizing mechanism through a servo driver, and meanwhile, the PLC control system controls the lifting platform, the sizing baffle plate and the material turning mechanism through respective electromagnetic valves, and the PLC control system further controls the shearing mechanism;
the circulating feeding mechanism comprises a base frame and a plurality of steel bar clamping grooves fixed on the base frame, connecting shafts driven by air cylinders are arranged between two adjacent steel bar clamping grooves, a first guide plate and a second guide plate are fixed on each connecting shaft, the first guide plate and the second guide plate are driven by the air cylinders to rotate, and steel bar materials in the current steel bar clamping grooves slowly jack up from the first guide plate and then slide into the next steel bar clamping groove through the second guide plate until reaching a destination of steel bar feeding.
Preferably, the shearing mechanism comprises a pressing mechanism for pressing the reinforcing steel bars between the lifting platform and the blanking mechanism and a shearing machine for shearing the reinforcing steel bars, and the PLC control system controls the pressing mechanism through an electromagnetic valve and controls the shearing machine through a hydraulic valve.
Preferably, the automatic feeding device further comprises a signal acquisition unit for acquiring state information of the automatic feeding mechanism, the lifting platform, the shearing machine, the automatic feeding motor, the automatic discharging motor, the servo motor and the hydraulic valve, and the signal acquisition unit is connected with the PLC control system.
Preferably, the system further comprises a man-machine interaction unit, wherein the man-machine interaction unit is connected with the PLC control system.
The invention has the following advantages:
1. the sizing mechanism adopts a PLC high-speed impulse response to control the on-off of the electromagnetic valve and the hydraulic valve, and adopts a PLC motion control instruction to cooperate with a servo system, so that the steel bars can be positioned, and the control precision of the sheared steel bars is within 1 mm.
2. Control of multiple baffles by PLC: the length specification of the product is input into the man-machine interaction unit, the program in the PLC is calculated by dividing the length specification of the product by the interval between the baffles, the result is the number of baffles to be lifted, and then the sizing mechanism moves for the distance required to move. The method has the advantages of high positioning speed and high efficiency.
3. Through the required data of input on the touch-sensitive screen, the PLC system carries out the selection effectively to the length of bar shear through program control, reduces the waste of material, improves material utilization ratio greatly, reduces engineering cost.
4. The sheared reinforced bar material can be automatically sent to stations of working procedures such as upsetting, thread rolling, edge milling, chamfering and the like through the circulating material moving mechanism. Therefore, the two production lines are smoothly connected, the production efficiency is improved, and the labor cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a system provided by the present invention;
FIG. 2 is a schematic diagram of a cyclical feed mechanism;
FIG. 3 is a circuit block diagram of the present invention;
Detailed Description
In order to make the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
With reference to fig. 1,2 and 3, the intelligent control system for a fully automatic bar shearing assembly line provided by the invention comprises a feeding mechanism 2 driven by an automatic feeding motor 2, a discharging mechanism driven by an automatic discharging motor 7, a PLC control system, a signal acquisition unit and a man-machine interaction unit.
A shearing mechanism 4 is arranged between a feeding mechanism 2 and a discharging mechanism, a lifting platform 3 is arranged between the shearing mechanism 4 and the feeding mechanism 2, the lifting platform 3 is connected with the feeding mechanism 2, a sizing mechanism is arranged on the discharging mechanism, the sizing mechanism comprises a sizing moving platform driven by a sizing mechanism servo motor 5 and N liftable sizing baffles 6, N is more than or equal to 3, the distance between two adjacent sizing baffles 6 is fixed, xmm is set, the sizing baffle 6 closest to the shearing mechanism 4 is a first sizing baffle 6, the distance between the first sizing baffle 6 and the shearing mechanism 4 is Ymm, after the nth sizing baffle 6 is lifted, n=1, 2, … and N, the sizing moving platform moves n×Xmm in the direction away from the feeding mechanism 2, the reinforcing steel bars are driven by the feeding mechanism 2 and the discharging mechanism until the cutting length is (Y+n×X) mm after the cutting baffles 6 are contacted with the nth sizing baffles 6 through the sizing moving platform, the reinforcing steel bars are cut by the shearing mechanism 4, and the reinforcing steel bars are conveyed to the discharging mechanism through a circulation to a turnover mechanism 9 for carrying out a production procedure after being conveyed to the discharging mechanism and circulated to the discharging mechanism.
The shearing mechanism 4 comprises a pressing mechanism for pressing the reinforcing steel bars between the lifting platform 3 and the blanking mechanism and a shearing machine for shearing the reinforcing steel bars.
The PLC control system controls the automatic feeding motor 2 and the automatic discharging motor 7 through respective frequency converters, the PLC control system drives the servo motor 5 of the sizing mechanism through a servo driver, meanwhile, the PLC control system controls the lifting platform 3, the sizing baffle 6, the material turning mechanism 8, the circulating feeding mechanism 9 and the pressing mechanism through respective electromagnetic valves, the PLC control system controls the shearing machine through a hydraulic valve, and the PLC control system also controls the shearing mechanism 4.
The signal acquisition unit is used for acquiring state information of the automatic feeding mechanism 1, the lifting platform 3, the shearing machine, the automatic feeding motor 2, the automatic discharging motor 7, the servo motor and the hydraulic valve. The signal acquisition unit is connected with the PLC control system.
The man-machine interaction unit is an upper computer of the control system, performs data interaction with the PLC control system through a ModbusRTU protocol or an Ethernet, and is used for setting related parameters of the shear line equipment, monitoring the running process of the shear line equipment in real time and storing customer formula data. An operator can operate the equipment manually and automatically through the man-machine unit, monitor the I/O state of the PLC control system and the like.
The circulating feeding mechanism of the invention, as shown in figure 2, consists of a first guide plate 10, a second guide plate 11, a steel bar clamping groove 12, a connecting shaft 13 and a base frame 14. When the reinforced bar material is turned into the first reinforced bar clamping groove 12 from the turning mechanism of the assembly line equipment, the first guide plate 10 and the second guide plate 11 are driven by the air cylinder to rotate, the reinforced bar is slowly jacked up by the first guide plate 10, and then slides into the second reinforced bar clamping groove by the second guide plate 11, so that the reinforced bar feeding destination is achieved. The connecting shaft 13 turns the first guide plate 10 and the second guide plate 11 uniformly left and right, and sends the reinforced bar material to the next processing procedure.
After the shearing scheme is determined according to the requirements of the length specification of the product, the total length of the reinforcing steel bar and other conditions, the length of the current product is calculated and determined through the PLC control system, the required sizing baffle 6 is lifted, and meanwhile, the sizing moving platform moves left and right, so that accurate positioning is realized. For example, in the invention, 24 sizing baffles 6 with the interval of 50mm are arranged, the length of the steel bar to be cut is assumed to be 2.2m, and then the fourth sizing baffle 6 is lifted, and meanwhile, the movable platform moves by 200mm right, so that the accurate positioning of the steel bar is realized.
And then the automatic feeding motor 2 and the automatic discharging motor 7 forward the materials at the same time, after the feeding is completed, after all products are contacted with the sizing baffle 6, the system drives the lifting platform 3 to descend to the proper position, the PLC controls the pressing mechanism in the shearing mechanism 4 to press the products, and then controls the hydraulic valve in the shearing mechanism 4 to cut off the reinforcing steel bars. After cutting, the lifting platform 3 is lifted in place, the automatic blanking motor 7 rotates forward at the same time, finished steel bars are conveyed to a turning position, the turning mechanism 8 turns materials into the circulating feeding mechanism 9, and the circulating feeding mechanism 9 conveys the steel bars to the next working procedure for production.
The PLC control system selected by the invention is an intelligent PLC control unit and must have a 6-axis high-speed motion control function, a linear interpolation function and a synchronization function, and mainly applies a high-speed motion control instruction of the intelligent PLC to realize logic operation and data acquisition of the bar shearing equipment, so that when the bar shearing equipment is automatically produced, the sizing mechanism achieves the function of precisely sizing the bar according to a self-generated cutting configuration scheme of the system, and simultaneously determines a cutting scheme of bar shearing according to cutting priority agreed on a man-machine interface, thereby greatly reducing the rejection rate of the bar and reducing the cost just.
The PLC control system mainly comprises modules of logic sequential control, high-speed pulse, motion control instructions and the like, the system analyzes the state attribute of each device through acquisition signals, uses communication to read user parameters on the man-machine interaction unit, and outputs instructions to control the servo control system, the frequency converter system and other electrical components according to the production process requirements through calculation and processing. The PLC control system controls the turn-off and turn-off of the indicator light, the electromagnetic valve, the common motor and the buzzer through logic calculation. The servo motor is controlled to achieve the purpose of accurate positioning by outputting high-speed pulses through motion control instructions such as absolute values, relative values, zero returning and the like.
In summary, the basic principle of the intelligent control system of the full-automatic bar shearing assembly line is that the PLC control system acquires the IO state of the field device through field signal acquisition, acquires the user parameters in the human-computer interface in a communication mode, and outputs and controls the orderly actions of each servo system, the frequency converter system and other electric components according to the operation mode of the user according to the equipment control process requirements, so as to drive each mechanical component to rapidly complete the production task of bar shearing.
Claims (4)
1. An intelligent control system for a full-automatic steel bar shearing assembly line is characterized by comprising a feeding mechanism (2) driven by an automatic feeding motor (2) and a discharging mechanism driven by an automatic discharging motor (7), wherein a shearing mechanism (4) is arranged between the feeding mechanism (2) and the discharging mechanism, a lifting platform (3) is arranged between the shearing mechanism (4) and the feeding mechanism (2), the lifting platform (3) is connected with the feeding mechanism (2), a sizing mechanism is arranged on the discharging mechanism, the sizing mechanism comprises a sizing moving platform driven by a sizing mechanism servo motor (5) and N liftable sizing baffles (6), and N is more than or equal to 3, the spacing between two adjacent sizing baffles (6) is fixed, xmm is set, the sizing baffle (6) closest to the shearing mechanism (4) is a first sizing baffle (6), the distance between the first sizing baffle (6) and the shearing mechanism (4) is Ymm, after the nth sizing baffle (6) is lifted, n=1, 2, … and N, the sizing moving platform moves N multiplied by Xmm in the direction away from the feeding mechanism (2), the steel bars move under the driving of the feeding mechanism (2) and the discharging mechanism until the steel bars are contacted with the nth sizing baffle (6) through the sizing moving platform, the length of the steel bars sheared by the shearing mechanism (4) is (Y+n multiplied by X) mm, and after being transported to a discharging position by a discharging mechanism, the sheared steel bars are turned into a circulating feeding mechanism (9) through a turning mechanism (8), wherein:
the intelligent control system further comprises a PLC control system, the PLC control system controls the automatic feeding motor (2) and the automatic discharging motor (7) through respective frequency converters, the PLC control system drives the servo motor (5) of the sizing mechanism through a servo driver, meanwhile, the PLC control system controls the lifting platform (3), the sizing baffle (6) and the material turning mechanism (8) through respective electromagnetic valves, and the PLC control system also controls the shearing mechanism (4);
the circulating feeding mechanism comprises a base frame (14) and a plurality of steel bar clamping grooves (12) fixed on the base frame (14), connecting shafts (13) driven by air cylinders are arranged between two adjacent steel bar clamping grooves (12), a first guide plate (10) and a second guide plate (11) are fixed on each connecting shaft (13), the first guide plate (10) and the second guide plate (11) are driven by the air cylinders to rotate, and steel bar materials of the current steel bar clamping grooves (12) slowly jack up from the first guide plate (10) and then slide into the next steel bar clamping groove (12) through the second guide plate (11) until reaching a destination of steel bar feeding.
2. An intelligent control system for a fully automatic bar shearing line according to claim 1, characterized in that the shearing mechanism (4) comprises a pressing mechanism for pressing bars between the lifting platform (3) and the blanking mechanism and a shearing machine for shearing the bars, and the PLC control system controls the pressing mechanism via a solenoid valve and the shearing machine via a hydraulic valve.
3. The intelligent control system for the full-automatic bar shearing assembly line according to claim 2, further comprising a signal acquisition unit for acquiring state information of the feeding mechanism (1), the lifting platform (3), the shearing machine, the automatic feeding motor (2), the automatic discharging motor (7), the servo motor and the hydraulic valve, wherein the signal acquisition unit is connected with the PLC control system.
4. The intelligent control system for a fully automatic bar shear assembly line of claim 2, further comprising a man-machine interaction unit, wherein the man-machine interaction unit is connected to the PLC control system.
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