CN112882436A - Net curtain double-deviation-rectifying device of lapping machine and control method - Google Patents

Net curtain double-deviation-rectifying device of lapping machine and control method Download PDF

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Publication number
CN112882436A
CN112882436A CN202011638167.2A CN202011638167A CN112882436A CN 112882436 A CN112882436 A CN 112882436A CN 202011638167 A CN202011638167 A CN 202011638167A CN 112882436 A CN112882436 A CN 112882436A
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China
Prior art keywords
deviation
net curtain
main
deviation correcting
slave
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CN202011638167.2A
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CN112882436B (en
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刘鹏
张晓涛
李喜龙
孙艳艳
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Dalian Huayang New Materials Technology Co ltd
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Dalian Huayang New Materials Technology Co ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/052Linking several PLC's
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/08Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of fibres or yarns
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/10Plc systems
    • G05B2219/12Plc mp multi processor system
    • G05B2219/1215Master slave system

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

A net curtain double-deviation-rectifying device of a net laying machine and a control method are disclosed. The net curtain left limit switch SQ1, the net curtain right limit switch SQ2 and the alarm HW are arranged on the machine frame of the net paving machine and are electrically connected with the PLC control cabinet. The invention has high reliability, can reduce the failure and stop times and prolong the service life of components.

Description

Net curtain double-deviation-rectifying device of lapping machine and control method
Technical Field
The invention relates to the field of non-weaving, in particular to a lapping machine net curtain double-deviation-rectifying device and an electrical control system thereof.
Background
The traditional net curtain deviation rectifying method of the net paver mainly comprises two modes, namely motor deviation rectifying and cylinder deviation rectifying. No matter which mode is adopted, the mode is single, the action of the executing mechanism is frequent, the service life of elements is short, the reliability of the deviation rectifying control system is low, and the times of fault parking can be increased.
Disclosure of Invention
The invention aims to provide a lapping machine net curtain double-deviation-rectifying device and a control method, which have high reliability, can reduce the failure and stop times and prolong the service life of components.
The invention mainly comprises a PLC control cabinet, a master deviation correcting system, a slave deviation correcting system, an executing mechanism, an alarm HW, a net curtain left deviation limit switch SQ1 and a net curtain right deviation limit switch SQ 2.
The PLC control cabinet is electrically connected with the main deviation correcting system, the slave deviation correcting system and the executing mechanism respectively, the main deviation correcting system and the slave deviation correcting system are connected with the executing mechanism respectively, and the running of the executing mechanism is controlled through the main deviation correcting system and the slave deviation correcting system. The net curtain left limit switch SQ1, the net curtain right limit switch SQ2 and the alarm HW are arranged on the machine frame of the net paving machine and are electrically connected with the PLC control cabinet.
Preferably, the PLC control cabinet comprises a circuit breaker QF1, a circuit breaker QF2, a circuit breaker QF3, a circuit breaker QF4, a switching power supply PS1, a PLC programmable controller, a first intermediate relay, a second intermediate relay, a third intermediate relay, a fourth intermediate relay, a fifth intermediate relay, a frequency converter U1, a frequency converter U2, a servo driver SF, a manual button SB1, an alarm silencing button SB2 and a work indicator lamp H. The first intermediate relay includes a coil K1AAnd a set of normally open contacts K1, the second intermediate relay including a coil K2AAnd a set of normally open contacts K2, the third intermediate relay including a coil K3AAnd a set of normally open contacts K3, the fourth intermediate relay including a coil K4AAnd a set of normally open contacts K4, the fifth intermediate relay including a coil K5AAnd a set of normally open contacts K5. First intermediate relay coil K1ASecond intermediate relay coil K2AThird intermediate relay coil K3AFourth intermediate relay coil K4AAnd a fifth intermediate relay coil K5AAnd the power supply is respectively electrically connected with the switching power supply PS1 and the PLC. The single-phase AC commercial power passes through the circuit breaker QF4, the output end of the circuit breaker QF4 and the fifth intermediate relayA group of normally open contacts K5 of the electric appliance and an alarm HW are connected in series and then connected to a zero line, a switching power supply PS1 outputs a positive power supply 24V and a negative power supply M, and the power supply ends of the PLC are connected with the switching power supply PS1 which outputs the positive power supply 24V and the negative power supply M. The three-phase alternating current is connected to a power supply end of a frequency converter U1 through a circuit breaker QF1, and a group of normally open contacts K1 of a first intermediate relay is connected to a group of forward turning points S1 and SN of the frequency converter U1. The output end of the breaker QF1 is connected to the input end of the breaker QF2, the output end of the breaker QF2 is connected to the power supply end of the frequency converter U2, a group of normally open contacts K2 of the second intermediate relay is connected to a group of forward turning points S1 and SN of the frequency converter U2, and a group of normally open contacts K3 of the third intermediate relay is connected to a group of reverse turning points S2 and SN of the frequency converter U2. Work pilot lamp H is connected to the first live wire and the third live wire of circuit breaker QF1 output, manual button SB1 and switching power supply PS1, PLC programmable controller electric connection, warning amortization button SB2 and switching power supply PS1, PLC programmable controller electric connection, work pilot lamp H, manual button SB1, warning amortization button SB2 all establish at the outside of the cabinet door of PLC switch board. The input end of the breaker QF3 is connected to the output end of the breaker QF1, the breaker QF3 is connected to the input end of the servo driver SF, the 24VIN contact of the servo driver SF is connected with the positive pole of the 24V power supply of the PLC programmable controller, the negative pole of the 24V power supply of the PLC programmable controller is connected with one end of a group of normally open contacts K4 of the fourth intermediate relay, and the other end of the group of normally open contacts K4 of the fourth intermediate relay is connected to the/S-0N contact of the servo driver SF.
Preferably, the main deviation correcting system mainly comprises a lapping machine motor M1 and a main deviation correcting motor M2. The input end of a lapping machine motor M1 is connected with the output end of a frequency converter U1, and the input end of a main deviation-correcting motor M2 is connected with the output end of a frequency converter U2.
Preferably, the slave deviation correcting system further comprises a servo motor M3 and an encoder PG. The input of the servo motor M3 is connected to the output of the servo driver SF, and the CN2 interface of the servo driver SF is connected to the encoder PG.
Preferably, the actuating mechanism comprises a master deviation rectifying mechanism and a slave deviation rectifying mechanism.
Preferably, the main deviation correcting mechanism comprises a main deviation correcting roller, a bearing A, a support plate A, a slideway A, a bearing A with a sliding block seat, a screw A, a worm and gear speed reducing mechanism A, a connecting plate A, a main deviation correcting net curtain left polarizing electric switch a1, a main deviation correcting net curtain right polarizing electric switch a2, a main deviation correcting motor front stroke limit switch SQ3 and a main deviation correcting motor rear stroke limit switch SQ 4. The main deviation correcting roller rotates forwards and reversely frequently, and a main deviation correcting motor M2 is driven by a frequency converter U2. The two support plates A are respectively fixed on the frame of the lapping machine, the two support plates A are respectively provided with a slideway A, a bearing A with a sliding block seat is arranged between the two slideways A, and one end of the bearing A with the sliding block seat is connected with one end of a screw rod A. One end of the main deviation rectifying roller is connected with a bearing A with a sliding block seat, and the other end of the main deviation rectifying roller is fixed on a frame of the lapping machine through the bearing A. One end of each of the two slide ways A is fixedly connected with a connecting plate A, a worm and gear reducer A is arranged on the connecting plate A, a turbine shaft of an output shaft of the worm and gear reducer A is tubular, threads are arranged on an inner hole of the output shaft of the worm and gear reducer A, the output shaft of the worm and gear reducer A is in threaded connection with the other end of the screw rod A, and an input shaft of the worm and gear reducer A is connected with a main deviation correcting motor M2. The main deviation correcting net curtain left polarization electric switch a1, the main deviation correcting net curtain right polarization electric switch a2, the main deviation correcting motor front travel limit switch SQ3 and the main deviation correcting motor rear travel limit switch SQ4 are respectively electrically connected with the switch power supply PS1 and the PLC. The main deviation-correcting net curtain left polarization electric switch a1 and the main deviation-correcting net curtain right polarization photoelectric switch a2 are arranged on the frame of the lapping machine and above the net curtains. And the group of main deviation correcting motor front travel limit switches SQ3 and the group of main deviation correcting motor rear travel limit switches SQ4 are respectively arranged on a slide A of the main deviation correcting mechanism.
Preferably, the slave deviation correcting mechanism comprises a slave deviation correcting roller, a bearing B, a support plate B, a slide way B, a bearing B with a sliding block seat, a lead screw B, a worm gear speed reducing mechanism B, a connecting plate B, a slave deviation correcting net curtain left polarization electric switch B1, a slave deviation correcting net curtain right polarization electric switch B2, a slave deviation correcting motor front stroke limit switch SQ5 and a slave deviation correcting motor rear stroke limit switch SQ 6. The slave deviation correcting roller of the slave deviation correcting mechanism is parallel to other rollers of the lapping machine and is in a zero position, and a servo motor M3 is driven by a servo driver SF. The two support plates B are respectively fixed on the frame of the lapping machine, the two support plates B are respectively provided with a slideway B, a bearing B with a sliding block seat is arranged between the two slideways B, and one end of the bearing B with the sliding block seat is connected with one end of a screw B. One end of the secondary rectification roller is connected with a bearing B with a sliding block seat, and the other end of the secondary rectification roller is fixed on a frame of the lapping machine through the bearing B. One end of each of the two slideways B is fixedly connected with the connecting plate B, the worm and gear reducer B is arranged on the connecting plate B, a turbine shaft of an output shaft of the worm and gear reducer B is tubular, threads are arranged at an inner hole of the output shaft of the worm and gear reducer B, the output shaft of the worm and gear reducer B is in threaded connection with the other end of the screw rod B, and an input shaft of the worm and gear reducer B is connected with the servo motor M3. The slave correction net curtain left polarization electric switch b1, the slave correction net curtain right polarization electric switch b2, the slave correction motor front travel limit switch SQ5 and the slave correction motor rear travel limit switch SQ6 are respectively electrically connected with the switch power supply PS1 and the PLC. The slave deviation-correcting net curtain left polarization electric switch b1 and the slave deviation-correcting net curtain right polarization photoelectric switch b2 are arranged on the frame of the lapping machine and are arranged above the net curtains. A group of front stroke limit switches SQ5 of the slave deviation correcting motor and a group of rear stroke limit switches SQ6 of the slave deviation correcting motor are respectively arranged on a slide way B of the slave deviation correcting mechanism.
Preferably, the main deviation correcting net curtain left polarization electric switch a1 and the slave deviation correcting net curtain left polarization electric switch b1 are arranged on one side wall of the net laying machine frame, and the main deviation correcting net curtain right polarization electric switch a2 and the slave deviation correcting net curtain right polarization electric switch b2 are arranged on the other side wall of the net laying machine frame.
The double-deviation correcting device for the net curtain of the lapping machine and the control method thereof comprise the following steps: the PLC runs by closing a breaker QF1, a breaker QF2, a breaker QF3 and a breaker QF4, wherein a single-phase alternating current commercial power passes through the breaker QF4, a switching power supply PS1 outputs a positive power supply 24V and a negative power supply M, and the PLC runs through a PN communication interface to give speed to a frequency converter U1, a frequency converter U2 and a servo driver SF and read the states of the frequency converter U1, the frequency converter U2 and the servo driver SF; and (2) the main deviation rectifying system works: three-phase alternating current passes through circuit breaker QF1, circuit breaker QF2, circuit breaker QF3, work pilot lamp H work, a set of normally open contact K1 of first auxiliary relay is closed, lapping machine motor M1 corotation work under the drive of converter U1, the net curtain normal operating, when net curtain deviation left direction, trigger main net curtain left polarisation electric switch a1 of rectifying, main motor M2 of rectifying drives main correction roller corotation, the net curtain removes to opposite direction. When the net curtain moves to the main correction net curtain right-deflection photoelectric switch a2, a group of normally open electric contacts K2 of the second intermediate relay is closed, and the main correction motor M2 drives the main correction roller to rotate reversely, so that the roller reciprocates in the period. The main rectification motor M2 rotates forwards and backwards frequently under the drive of the frequency converter U2, and the net curtain of the lapping machine moves left and right within the range of a main rectification net curtain left polarization electric switch a1 and a main rectification net curtain right polarization electric switch a2 under the action of the main rectification roller; and (3) working from a deviation rectifying system: the PLC controls the slave deviation correcting roller to be in a zero position control state, and the slave deviation correcting roller is kept parallel to other rollers in a normal state. When the main deviation correction net curtain left polarization electric switch a1, the main deviation correction net curtain right polarization electric switch a2 or the main deviation correction motor breaks down, the net curtain runs to the position of the slave deviation correction net curtain left polarization electric switch b1 or runs to the position of the slave deviation correction net curtain right polarization electric switch b2, a group of normally open contacts K5 of a fifth intermediate relay is closed, an alarm HW is triggered, meanwhile, a group of normally open contacts K4 of a fourth intermediate relay is closed, a servo motor M3 works under the driving of a servo driver SF, the net curtain of the net paving machine moves left and right in the range of the slave deviation correction net curtain left polarization electric switch b1 and the slave deviation correction net curtain right polarization electric switch b2 under the action of a slave deviation correction roller, and continues to work normally; step (4), zero restoration: when in maintenance, the silencing button SB2 is pressed, the alarm HW is closed, and after the main deviation correcting system is recovered to be normal, the manual button SB1 is operated to adjust the secondary deviation correcting roller to be at zero position, and the whole deviation correcting system is recovered to be in a normal working state; and (5) stopping working: when the net curtain touches the net curtain left limit switch SQ1 or the net curtain right limit switch SQ2, the net laying machine stops working.
Compared with the prior art, the invention has the following advantages: the reliability is high, and reducible trouble parking number of times prolongs components and parts life.
Drawings
FIG. 1 is a front view of the primary deviation correction mechanism of the present invention;
FIG. 2 is a side view of the primary deviation correction mechanism of the present invention;
FIG. 3 is a front view of the slave deviation rectification mechanism of the present invention;
FIG. 4 is a side view of the slave deviation rectification mechanism of the present invention;
FIG. 5 is a main circuit diagram of the present invention;
FIG. 6 is a control circuit diagram of the present invention;
FIG. 7 is a schematic diagram of PN communication according to the present invention;
in the figure, 1-a main deviation rectifying roller, 2-a bearing A, 3-a support plate A, 4-a slideway A, 5-a bearing A with a sliding block seat, 6-a lead screw A, 7-a worm and gear speed reducing mechanism A, 8-a connecting plate A, 9-a lapping machine frame, 10-a slave deviation rectifying roller, 11-a bearing B, 12-a support plate B, 13-a slideway B, 14-a bearing B with a sliding block seat, 15-a lead screw B, 16-a worm and gear speed reducing mechanism B and 17-a connecting plate B.
Detailed Description
In the schematic diagrams of the present invention shown in fig. 1 to 7, the PLC control cabinet is electrically connected to the master deviation correcting system, the slave deviation correcting system, and the actuator, and the master deviation correcting system and the slave deviation correcting system are connected to the actuator, respectively, and the operation of the actuator is controlled by the master deviation correcting system and the slave deviation correcting system. The net curtain left limit switch SQ1, the net curtain right limit switch SQ2 and the alarm HW are arranged on the machine frame of the net paving machine and are electrically connected with the PLC control cabinet.
The PLC control cabinet comprises a circuit breaker QF1, a circuit breaker QF2, a circuit breaker QF3, a circuit breaker QF4, a switch power supply PS1, a PLC programmable controller, a first intermediate relay, a second intermediate relay, a third intermediate relay, a fourth intermediate relay, a fifth intermediate relay, a frequency converter U1, a frequency converter U2, a servo driver SF, a manual button SB1, an alarm silencing button SB2 and a work indicator lamp H. The first intermediate relay includes a coil K1AAnd a set of normally open contacts K1, the second intermediate relay including a coil K2AAnd a set of normally open contacts K2, the third intermediate relay including a coil K3AAnd a set of normally open contacts K3, the fourth intermediate relay including a coil K4AAnd a set of normally open contacts K4, the fifth intermediate relay including a coil K5AAnd a set of normally open contacts K5. First intermediate relay coil K1ASecond intermediate relay coil K2AThird intermediate relay coil K3AThe first stepFour intermediate relay coil K4AAnd a fifth intermediate relay coil K5AAnd the power supply is respectively electrically connected with the switching power supply PS1 and the PLC. The single-phase alternating current commercial power is connected to a zero line after being connected in series with a group of normally open contacts K5 of a fifth intermediate relay and an alarm HW through a circuit breaker QF4 and an output end of a circuit breaker QF4, a switching power supply PS1 outputs a positive power supply 24V and a negative power supply M, and a power supply end of a PLC is connected with the switching power supply PS1 outputs the positive power supply 24V and the negative power supply M. The three-phase alternating current is connected to a power supply end of a frequency converter U1 through a circuit breaker QF1, and a group of normally open contacts K1 of a first intermediate relay is connected to a group of forward turning points S1 and SN of the frequency converter U1. The output end of the breaker QF1 is connected to the input end of the breaker QF2, the output end of the breaker QF2 is connected to the power supply end of the frequency converter U2, a group of normally open contacts K2 of the second intermediate relay is connected to a group of forward turning points S1 and SN of the frequency converter U2, and a group of normally open contacts K3 of the third intermediate relay is connected to a group of reverse turning points S2 and SN of the frequency converter U2. Work pilot lamp H is connected to the first live wire and the third live wire of circuit breaker QF1 output, manual button SB1 and switching power supply PS1, PLC programmable controller electric connection, warning amortization button SB2 and switching power supply PS1, PLC programmable controller electric connection, manual button SB1, warning amortization button SB2 and work pilot lamp H establish at the outside of the cabinet door of PLC switch board. The input end of the breaker QF3 is connected to the output end of the breaker QF1, the breaker QF3 is connected to the input end of the servo driver SF, the 24VIN contact of the servo driver SF is connected with the positive pole of the 24V power supply of the PLC programmable controller, the negative pole of the 24V power supply of the PLC programmable controller is connected with one end of a group of normally open contacts K4 of the fourth intermediate relay, and the other end of the group of normally open contacts K4 of the fourth intermediate relay is connected to the/S-0N contact of the servo driver SF.
The main deviation correcting system mainly comprises a lapping machine motor M1 and a main deviation correcting motor M2. The input end of a lapping machine motor M1 is connected with the output end of a frequency converter U1, and the input end of a main deviation-correcting motor M2 is connected with the output end of a frequency converter U2.
The slave deviation correcting system comprises a servo motor M3 and an encoder PG. The input of the servo motor M3 is connected to the output of the servo driver SF, and the CN2 interface of the servo driver SF is connected to the encoder PG.
The actuating mechanism comprises a main deviation rectifying mechanism and a slave deviation rectifying mechanism. The main deviation correcting mechanism comprises a main deviation correcting roller 1, a bearing A2, a support plate A3, a slideway A4, a bearing A5 with a slider seat, a screw A6, a worm and gear speed reducing mechanism A7, a connecting plate A8, a main deviation correcting net curtain left polarization electric switch a1, a main deviation correcting net curtain right polarization photoelectric switch a2, a main deviation correcting motor front travel limit switch SQ3 and a main deviation correcting motor rear travel limit switch SQ 4. The main deviation correcting roller rotates forwards and reversely frequently, and a main deviation correcting motor M2 is driven by a frequency converter U2. Two support plates A3 are respectively fixed on the frame 9 of the lapping machine, a slideway A4 is respectively arranged on the two support plates A, a bearing A5 with a sliding block seat is arranged between the two slideways A, and one end of the bearing A5 with the sliding block seat is connected with one end of a screw A6. One end of the main deviation rectifying roller 1 is connected with a bearing A5 with a sliding block seat, and the other end of the main deviation rectifying roller is fixed on a frame of the lapping machine through a bearing A2. One end of each of the two slide ways A is fixedly connected with a connecting plate A8, a worm gear reducer A7 is arranged on the connecting plate A, a turbine shaft of an output shaft of the worm gear reducer A7 is tubular, threads are arranged on an inner hole of an output shaft of the worm gear reducer A7, the output shaft of the worm gear reducer A7 is in threaded connection with the other end of the screw rod A6, and an input shaft of the worm gear reducer A7 is connected with a main deviation-correcting motor M2. The main deviation correcting net curtain left polarization electric switch a1, the main deviation correcting net curtain right polarization electric switch a2, the main deviation correcting motor front travel limit switch SQ3 and the main deviation correcting motor rear travel limit switch SQ4 are respectively electrically connected with the switch power supply PS1 and the PLC. The main deviation-correcting net curtain left polarization electric switch a1 and the main deviation-correcting net curtain right polarization photoelectric switch a2 are arranged on the frame of the lapping machine and above the net curtains. And the group of main deviation correcting motor front travel limit switches SQ3 and the group of main deviation correcting motor rear travel limit switches SQ4 are respectively arranged on a slide A of the main deviation correcting mechanism. The slave deviation correcting mechanism comprises a slave deviation correcting roller 10, a bearing B11, a support plate B12, a slide way B13, a bearing B14 with a slider seat, a lead screw B15, a worm and gear speed reducing mechanism B16, a connecting plate B17, a slave deviation correcting net curtain left polarization electric switch B1, a slave deviation correcting net curtain right polarization photoelectric switch B2, a slave deviation correcting motor front travel limit switch SQ5 and a slave deviation correcting motor rear travel limit switch SQ 6. The slave deviation correcting roller of the slave deviation correcting mechanism is parallel to other rollers of the lapping machine and is in a zero position, and a servo motor M3 is driven by a servo driver SF. Two support plates B12 are respectively fixed on the frame 9 of the lapping machine, a slideway B13 is respectively arranged on the two support plates B, a bearing B14 with a sliding block seat is arranged between the two slideways B, and one end of the bearing B with the sliding block seat is connected with one end of a screw B15. One end of the deviation rectifying roller 10 is connected with a bearing B14 with a sliding block seat, and the other end of the deviation rectifying roller is fixed on the frame of the lapping machine through a bearing B11. One end of each of the two slide ways B is fixedly connected with a connecting plate B17, a worm and gear reducer B16 is arranged on the connecting plate B, a turbine shaft of an output shaft of the worm and gear reducer B is tubular, threads are arranged on an inner hole of the output shaft of the worm and gear reducer B, the output shaft of the worm and gear reducer B is in threaded connection with the other end of the lead screw B15, and an input shaft of the worm and gear reducer B is connected with a servo motor M3. The slave correction net curtain left polarization electric switch b1, the slave correction net curtain right polarization electric switch b2, the slave correction motor front travel limit switch SQ5 and the slave correction motor rear travel limit switch SQ6 are respectively electrically connected with the switch power supply PS1 and the PLC. The slave deviation-correcting net curtain left polarization electric switch b1 and the slave deviation-correcting net curtain right polarization photoelectric switch b2 are arranged on the frame of the lapping machine and are arranged above the net curtains. A group of front stroke limit switches SQ5 of the slave deviation correcting motor and a group of rear stroke limit switches SQ6 of the slave deviation correcting motor are respectively arranged on a slide way B of the slave deviation correcting mechanism. The main deviation correcting net curtain left polarization electric switch a1 and the slave deviation correcting net curtain left polarization electric switch b1 are arranged on one side wall of the net laying machine frame, and the main deviation correcting net curtain right polarization photoelectric switch a2 and the slave deviation correcting net curtain right polarization photoelectric switch b2 are arranged on the other side wall of the net laying machine frame.
The double-deviation correcting device for the net curtain of the lapping machine and the control method thereof comprise the following steps: the PLC runs by closing a breaker QF1, a breaker QF2, a breaker QF3 and a breaker QF4, wherein a single-phase alternating current commercial power passes through the breaker QF4, a switching power supply PS1 outputs a positive power supply 24V and a negative power supply M, and the PLC runs through a PN communication interface to give speed to a frequency converter U1, a frequency converter U2 and a servo driver SF and read the states of the frequency converter U1, the frequency converter U2 and the servo driver SF; and (2) the main deviation rectifying system works: three-phase alternating current passes through circuit breaker QF1, circuit breaker QF2, circuit breaker QF3, work pilot lamp H work, a set of normally open contact K1 of first auxiliary relay is closed, lapping machine motor M1 corotation work under the drive of converter U1, the net curtain normal operating, when net curtain deviation left direction, trigger main net curtain left polarisation electric switch a1 of rectifying, main motor M2 of rectifying drives main correction roller corotation, the net curtain removes to opposite direction. When the net curtain moves to the main correction net curtain right-deflection photoelectric switch a2, a group of normally open electric contacts K2 of the second intermediate relay is closed, and the main correction motor M2 drives the main correction roller to rotate reversely, so that the roller reciprocates in the period. The main rectification motor M2 rotates forwards and backwards frequently under the drive of the frequency converter U2, and the net curtain of the lapping machine moves left and right within the range of a main rectification net curtain left polarization electric switch a1 and a main rectification net curtain right polarization electric switch a2 under the action of the main rectification roller; and (3) working from a deviation rectifying system: the PLC controls the slave deviation correcting roller to be in a zero position control state, and the slave deviation correcting roller is kept parallel to other rollers in a normal state. When the main deviation correction net curtain left polarization electric switch a1, the main deviation correction net curtain right polarization electric switch a2 or the main deviation correction motor breaks down, the net curtain runs to the position of the slave deviation correction net curtain left polarization electric switch b1 or runs to the position of the slave deviation correction net curtain right polarization electric switch b2, a group of normally open contacts K5 of a fifth intermediate relay is closed, an alarm HW is triggered, meanwhile, a group of normally open contacts K4 of a fourth intermediate relay is closed, a servo motor M3 works under the driving of a servo driver SF, the net curtain of the net paving machine moves left and right in the range of the slave deviation correction net curtain left polarization electric switch b1 and the slave deviation correction net curtain right polarization electric switch b2 under the action of a slave deviation correction roller, and continues to work normally; step (4), zero restoration: when in maintenance, the silencing button SB2 is pressed, the alarm HW is closed, and after the main deviation correcting system is recovered to be normal, the manual button SB1 is operated to adjust the secondary deviation correcting roller to be at zero position, and the whole deviation correcting system is recovered to be in a normal working state; and (5) stopping working: when the net curtain touches the net curtain left limit switch SQ1 or the net curtain right limit switch SQ2, the net laying machine stops working.

Claims (9)

1. The utility model provides a two deviation correcting devices of lapping machine net curtain, mainly includes PLC switch board, main deviation correcting system, follows deviation correcting system, actuating mechanism, alarm HW, net curtain left side limit switch SQ1 and net curtain right side limit switch SQ2, its characterized in that: the PLC control cabinet is electrically connected with the main deviation correcting system, the auxiliary deviation correcting system and the executing mechanism respectively, the main deviation correcting system and the auxiliary deviation correcting system are connected with the executing mechanism respectively, the operation of the executing mechanism is controlled through the main deviation correcting system and the auxiliary deviation correcting system, and the net curtain left deviation limit switch SQ1, the net curtain right deviation limit switch SQ2 and the alarm HW are arranged on the net paving machine frame and are electrically connected with the PLC control cabinet.
2. The lapping machine wire curtain double deviation correcting device of claim 1, characterized in that: the PLC control cabinet comprises a circuit breaker QF1, a circuit breaker QF2, a circuit breaker QF3, a circuit breaker QF4, a switch power supply PS1, a PLC programmable controller, a first intermediate relay, a second intermediate relay, a third intermediate relay, a fourth intermediate relay, a fifth intermediate relay, a frequency converter U1, a frequency converter U2, a servo driver SF, a manual button SB1, an alarm silencing button SB2 and a work indicator lamp H, wherein the first intermediate relay comprises a coil K1AAnd a set of normally open contacts K1, the second intermediate relay including a coil K2AAnd a set of normally open contacts K2, the third intermediate relay including a coil K3AAnd a set of normally open contacts K3, the fourth intermediate relay including a coil K4AAnd a set of normally open contacts K4, the fifth intermediate relay including a coil K5AAnd a set of normally open contacts K5, a first intermediate relay coil K1ASecond intermediate relay coil K2AThird intermediate relay coil K3AFourth intermediate relay coil K4AAnd a fifth intermediate relay coil K5AThe three-phase alternating current power supply is respectively electrically connected with a switch power supply PS1 and a PLC programmable controller, a single-phase alternating current commercial power passes through a breaker QF4, the output end of the breaker QF4 is connected with a group of normally open contacts K5 of a fifth intermediate relay and an alarm HW in series and then is connected to a zero line, the switch power supply PS1 outputs a positive power supply 24V and a negative power supply M, the power end of the PLC programmable controller is connected with the switch power supply PS1 which outputs the positive power supply 24V and the negative power supply M, the three-phase alternating current is connected to the power end of a frequency converter U1 through a breaker QF1, a group of normally open contacts K1 of the first intermediate relay is connected to a group of positive turning points S1 and SN of the frequency converter U1, the output end of the breaker QF1 is connectedA power supply end, a group of normally open contacts K2 of a second intermediate relay is connected to a group of forward turning points S1 and SN of a frequency converter U2, a group of normally open contacts K3 of a third intermediate relay is connected to a group of reverse turning points S2 and SN of a frequency converter U2, a work indicator lamp H is connected to a first live wire and a third live wire at the output end of a circuit breaker QF1, a manual button SB1 is electrically connected with a switch power supply PS1 and a PLC programmable controller, an alarm silencing button SB2 is electrically connected with a switch power supply PS1 and the PLC programmable controller, the work indicator lamp H, the manual button SB1 and the alarm silencing button SB2 are all arranged outside a cabinet door of the PLC control cabinet, the input end of the circuit breaker QF3 is connected to the output end of a circuit breaker QF1, the circuit breaker QF3 is connected to the input end of a servo driver SF, a 24VIN contact of the servo driver SF is connected with the positive electrode of a group of a PLC programmable controller 24V power supply, the negative electrode of the PLC programmable, the other end of the set of normally-open points K4 of the fourth intermediate relay is connected to the/S-0N contact of the servo driver SF.
3. A lapper curtain double deviation rectification device according to claim 1 or 2, characterized in that: the main deviation correcting system mainly comprises a lapping machine motor M1 and a main deviation correcting motor M2, wherein the input end of the lapping machine motor M1 is connected with the output end of a frequency converter U1, and the input end of the main deviation correcting motor M2 is connected with the output end of a frequency converter U2.
4. A lapper curtain double deviation rectification device according to claim 1 or 2, characterized in that: the slave deviation correcting system also comprises a servo motor M3 and an encoder PG, wherein the input end of the servo motor M3 is connected with the output end of a servo driver SF, and the CN2 interface of the servo driver SF is connected with the encoder PG.
5. A lapper curtain double deviation rectification device according to claim 1 or 2, characterized in that: the actuating mechanism comprises a main deviation rectifying mechanism and a slave deviation rectifying mechanism.
6. The lapper curtain double deviation rectification device according to claim 5, characterized in that: the main deviation correcting mechanism comprises a main deviation correcting roller, a bearing A, a support plate A, a slideway A, a bearing A with a sliding block seat, a lead screw A, a worm and gear speed reducing mechanism A, a connecting plate A, a main deviation correcting net curtain left polarization electric switch a1, a main deviation correcting net curtain right polarization photoelectric switch a2, a main deviation correcting motor front stroke limit switch SQ3 and a main deviation correcting motor rear stroke limit switch SQ4, the main deviation correcting roller rotates forwards and reversely frequently, a frequency converter U2 drives a main deviation correcting motor M2, the two support plates A are respectively fixed on a frame of the lapping machine, the slideway A is respectively arranged on the two support plates A, the bearing A with the sliding block seat is arranged between the two slideway A, one end of the bearing A with the sliding block seat is connected with one end of the lead screw A, one end of the main deviation correcting roller is connected with the bearing A with the sliding block seat, the other end of the main deviation correcting roller is fixed on the frame of the lapping machine through the bearing A, one end of the two connecting plate A, the turbine shaft of the output shaft of the turbine worm reducer A is tubular, threads are arranged on an inner hole of the output shaft of the turbine worm reducer A, the output shaft of the turbine worm reducer A is in threaded connection with the other end of the screw rod A, the input shaft of the turbine worm reducer A is connected with a main deviation-correcting motor M2, a main deviation-correcting net curtain left polarization electric switch a1, a main deviation-correcting net curtain right polarization electric switch a2, a main deviation-correcting motor front travel limit switch SQ3 and a main deviation-correcting motor rear travel limit switch SQ4 are respectively and electrically connected with a switch power supply PS1 and a PLC programmable controller, the main deviation-correcting net curtain left polarization electric switch a1 and the main deviation-correcting net curtain right polarization electric switch a2 are arranged on a frame of the lapping machine and are arranged above a lapping machine, and a group of main deviation-correcting motor front travel limit switches SQ3 and a group of main deviation-correcting motor rear.
7. The lapper curtain double deviation rectification device according to claim 5, characterized in that: the slave deviation correcting mechanism comprises a slave deviation correcting roller, a bearing B, a support plate B, a slideway B, a bearing B with a sliding block seat, a screw rod B, a worm and gear speed reducing mechanism B, a connecting plate B, a slave deviation correcting net curtain left polarization electric switch B1, a slave deviation correcting net curtain right polarization photoelectric switch B2, a slave deviation correcting motor front stroke limit switch SQ5 and a slave deviation correcting motor rear stroke limit switch SQ6, wherein the slave deviation correcting roller of the slave deviation correcting mechanism is parallel to other rollers of the lapping machine and is in zero position, a servo motor M3 is driven through a servo driver SF, the two support plates B are respectively fixed on a frame of the lapping machine, the slideway B is respectively arranged on the two support plates B, the bearing B with the sliding block seat is arranged between the two slideway B, one end of the bearing B with the sliding block seat is connected with one end of the screw rod B, one end of the slave deviation correcting roller is connected with the bearing B with the sliding block seat, the other end of the deviation, one end of each of the two slideways B is fixedly connected with the connecting plate B, the worm gear reducer B is arranged on the connecting plate B, a turbine shaft of an output shaft of the worm gear reducer B is in a tubular shape, an inner hole of the output shaft of the worm gear reducer B is provided with a thread, the output shaft of the worm gear reducer B is in threaded connection with the other end of the screw rod B, an input shaft of the worm gear reducer B is connected with a servo motor M3, a slave deviation correcting net curtain left polarization electric switch B1, a slave deviation correcting net curtain right polarization electric switch B2 and a slave deviation correcting motor forward stroke limiting switch SQ5, the slave deviation-correcting motor rear travel limit switch SQ6 is respectively electrically connected with the switching power supply PS1 and the PLC, the slave deviation-correcting net curtain left polarization electric switch B1 and the slave deviation-correcting net curtain right polarization photoelectric switch B2 are arranged on the frame of the lapping machine and are arranged above the net curtain, and the group of slave deviation-correcting motor front travel limit switches SQ5 and the group of slave deviation-correcting motor rear travel limit switches SQ6 are respectively arranged on a slide way B of the slave deviation-correcting mechanism.
8. A lapper curtain double deviation rectification device according to claim 6 or 7, characterized in that: the main deviation correcting net curtain left polarization electric switch a1 and the slave deviation correcting net curtain left polarization electric switch b1 are arranged on one side wall of the net laying machine frame, and the main deviation correcting net curtain right polarization photoelectric switch a2 and the slave deviation correcting net curtain right polarization photoelectric switch b2 are arranged on the other side wall of the net laying machine frame.
9. The lapping machine net curtain double-deviation correcting device and the control method applied to the lapping machine net curtain double-deviation correcting device are characterized in that: the method comprises the following steps: the PLC runs by closing a breaker QF1, a breaker QF2, a breaker QF3 and a breaker QF4, wherein a single-phase alternating current commercial power passes through the breaker QF4, a switching power supply PS1 outputs a positive power supply 24V and a negative power supply M, and the PLC runs through a PN communication interface to give speed to a frequency converter U1, a frequency converter U2 and a servo driver SF and read the states of the frequency converter U1, the frequency converter U2 and the servo driver SF; and (2) the main deviation rectifying system works: the three-phase alternating current works through the circuit breaker QF1, the circuit breaker QF2, the circuit breaker QF3 and the working indicator light H, a group of normally open contacts K1 of the first intermediate relay is closed, the net laying motor M1 rotates forwards under the driving of the frequency converter U1 to work, the net curtain runs normally, when the net curtain deflects to the left direction, the main deviation-correcting net curtain left polarization electric switch a1 is triggered, the main deviation-correcting motor M2 drives the main deviation-correcting roller to rotate forward, the net curtain moves to the opposite direction, when the net curtain moves to the main correction net curtain right-deflection photoelectric switch a2, a group of normally open electric contacts K2 of the second intermediate relay is closed, the main correction motor M2 drives the main correction roller to rotate reversely, with the periodic reciprocating motion, the main rectification motor M2 rotates forwards and backwards frequently under the drive of the frequency converter U2, and the net curtain of the net laying machine moves left and right within the range of the main rectification net curtain left polarization electric switch a1 and the main rectification net curtain right polarization electric switch a2 under the action of the main rectification roller; and (3) working from a deviation rectifying system: the PLC controls the slave correction roller to be in a zero control state, the slave correction roller is kept parallel to other rollers in a normal state, when the master correction net curtain left polarization electric switch a1, the master correction net curtain right polarization electric switch a2 or the master correction motor breaks down, the net curtain runs to the position of the slave correction net curtain left polarization electric switch b1 or runs to the position of the slave correction net curtain right polarization electric switch b2, a group of normally open contacts K5 of a fifth intermediate relay are closed, an alarm HW is triggered, a group of normally open contacts K4 of a fourth intermediate relay are closed, the servo motor M3 is driven by a servo driver SF to work, and the net curtain of the net laying machine moves left and right within the range of the slave correction net curtain left polarization electric switch b1 and the slave correction net curtain right polarization electric switch b2 under the action of the slave correction roller to continue to work normally; step (4), zero restoration: when in maintenance, the silencing button SB2 is pressed, the alarm HW is closed, and after the main deviation correcting system is recovered to be normal, the manual button SB1 is operated to adjust the secondary deviation correcting roller to be at zero position, and the whole deviation correcting system is recovered to be in a normal working state; and (5) stopping working: when the net curtain touches the net curtain left limit switch SQ1 or the net curtain right limit switch SQ2, the net laying machine stops working.
CN202011638167.2A 2020-12-31 Double-deviation correcting device for net curtain of net laying machine and control method Active CN112882436B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202390698U (en) * 2011-11-25 2012-08-22 华侨大学 Non-woven fabric multilayered compound control system
CN202591072U (en) * 2012-05-15 2012-12-12 上海上扬金属制罐有限公司 On-line deviation correction monitoring device of tinplate coating production line
CN103359522A (en) * 2013-07-11 2013-10-23 华中科技大学 Film conveying deviation-rectifying device combining tension control
CN204184024U (en) * 2014-08-28 2015-03-04 深圳市震巽网印机械有限公司 A kind of drying oven foraminous conveyer automatic deviation rectifying device
CN105947756A (en) * 2016-06-22 2016-09-21 浙江东山广信数码印花设备有限公司 Plane movable type cloth rectifying device
WO2018006547A1 (en) * 2016-07-07 2018-01-11 上海交通大学 System for removing rust from hull surface of ship
CN207655643U (en) * 2017-12-25 2018-07-27 青岛理工大学 One kind being based on the major-minor two close cycles deviation correction control systems of PID
CN108439000A (en) * 2018-03-29 2018-08-24 芜湖夏鑫新型材料科技有限公司 Protective film winds deviation correction mechanism
CN208544765U (en) * 2018-05-03 2019-02-26 上海宝华威热处理设备有限公司 A kind of mesh belt error-correction structure
CN210504912U (en) * 2019-07-30 2020-05-12 山东启原纳米科技有限公司 Nano carbon heating film screen printing deviation correcting device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202390698U (en) * 2011-11-25 2012-08-22 华侨大学 Non-woven fabric multilayered compound control system
CN202591072U (en) * 2012-05-15 2012-12-12 上海上扬金属制罐有限公司 On-line deviation correction monitoring device of tinplate coating production line
CN103359522A (en) * 2013-07-11 2013-10-23 华中科技大学 Film conveying deviation-rectifying device combining tension control
CN204184024U (en) * 2014-08-28 2015-03-04 深圳市震巽网印机械有限公司 A kind of drying oven foraminous conveyer automatic deviation rectifying device
CN105947756A (en) * 2016-06-22 2016-09-21 浙江东山广信数码印花设备有限公司 Plane movable type cloth rectifying device
WO2018006547A1 (en) * 2016-07-07 2018-01-11 上海交通大学 System for removing rust from hull surface of ship
CN207655643U (en) * 2017-12-25 2018-07-27 青岛理工大学 One kind being based on the major-minor two close cycles deviation correction control systems of PID
CN108439000A (en) * 2018-03-29 2018-08-24 芜湖夏鑫新型材料科技有限公司 Protective film winds deviation correction mechanism
CN208544765U (en) * 2018-05-03 2019-02-26 上海宝华威热处理设备有限公司 A kind of mesh belt error-correction structure
CN210504912U (en) * 2019-07-30 2020-05-12 山东启原纳米科技有限公司 Nano carbon heating film screen printing deviation correcting device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李勇忺;: "使用ATV930变频器对桥架行车进行纠偏改造的应用实践", 变频器世界, no. 01, 15 January 2020 (2020-01-15) *
赵振华;: "带式输送机跑偏原因分析与纠偏技术研究", 山西煤炭, no. 02, 15 June 2020 (2020-06-15) *

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