CN202975714U - Reversing automatic control system for double housing planer - Google Patents

Abstract

The utility model discloses a reversing automatic control system for a double housing planer and is applied to automatic reversing of the double housing planer. The automatic control system comprises a three-phase AC (Alternating Current) input power supply, a full-digital DC (Direct Current) speed adjustment driving device, a planer main shaft pulse rotary encoder, a planer main shaft control DC adjustable speed motor, a PLC (Programmable Logic Controller), a DC motor exciter, a revolution meter and an armature current meter of a DC motor, and a control power transformer. According to the automatic control system disclosed by the utility model, the PLC is applied to reversing automatic control of the double housing planer by software development; the reversing automatic control system is accurate in locating, simple and convenient in operation, fast in response speed, time-saving, labor-saving, effectively reduced in labor intensity, and improved in production efficiency; and various technical indicators all can meet design requirements well.

Description

Double-housing planer commutation automatic control system

Technical field

The utility model relates to the automatic control technology field, and is specifically a kind of for the automatic control system of double-housing planer when automatic cycle commutates.

Background technology

At present, the double-housing planer circulating picture-changing is to adopt the mode of mechanical collision travel switch to control to motion.As everyone knows, planer is a kind of reciprocating, and there are hundreds and thousands of commutations the every workday, and this impact for mechanical switch is very large, makes its serviceable life short, and failure rate is high.And afterwards the double-housing planer circulating picture-changing to being replaced by noncontacting switch gradually, and noncontacting switch is higher to the contact required distance, generally in 5 millimeters, be damaged or do not contact but switch often occurs in real work, can't guarantee to commutate control accurately and put in place.Simultaneously, above two kinds of original control modes all exist again when processing work length changes, and need to readjust the operation of collision block distance, have not only increased workload, and have strengthened labour intensity.

Summary of the invention

For overcoming the deficiencies in the prior art, goal of the invention of the present utility model is to provide a kind of double-housing planer commutation automatic control system, by pulse encoder is installed on direct current generator, combine with PLC programmable high-speed counter, to improve planing machine platen Stroke Control precision, reduce the machine failure rate, reduce labour intensity, enhance productivity.

For achieving the above object, the input end of three-phase alternating current input power access three-phase alternating current filter reactor of the present utility model, contact with the three-phase alternating current fastp-acting fuse, voltage is input to the major loop of total digital DC speed-adjustable driving device, the total digital DC speed-adjustable driving device with control dc speed-regulating motor with the planer main shaft of planer main shaft pulse rotary encoder and be connected, planer main shaft pulse rotary encoder accesses the PLC Programmable Logic Controller; The three-phase alternating current input power is through controlling power transformer access PLC Programmable Logic Controller, the input signal of PLC Programmable Logic Controller is controlled the control signal of stop portion and receives the rotating signal of controlling the planer main shaft pulse rotary encoder of dc speed-regulating motor from the planer main shaft from planer push-botton operation station and lathe bed for accepting, as the pulse input of PLC control able to programme; The output signal of PLC Programmable Logic Controller is enable with enabling signal and control the motor sense of rotation and the given signal of rotational speed, the output signal of PLC Programmable Logic Controller makes controls the driving of total digital DC speed-adjustable driving device, and the tachometer gage of dc speed-regulating motor excitation, direct current generator is connected with the total digital DC speed-adjustable driving device with the armature supply table.

The utility model compared with prior art, PLC programmable high-speed counting is applied in automatic control of commutation of double-housing planer by software development, accurate positioning, easy and simple to handle, repercussion speed is fast, and is laborsaving during joint, reliable and stable, effectively reduce labour intensity, improved production efficiency, all technical all can meet design requirement well.

Description of drawings

Fig. 1 is system chart of the present utility model.

Fig. 2 is the first electrical schematic diagram of the present utility model.

Fig. 3 is the second electrical schematic diagram of the present utility model.

Fig. 4 is that ladder diagram is controlled in commutation of the present utility model.

Embodiment

as Fig. 1, Fig. 2, shown in Figure 3, three-phase alternating current input power of the present utility model is AC380V, frequency 50HZ, the input end of three-phase alternating current input power access three-phase alternating current filter reactor, contact with the three-phase alternating current fastp-acting fuse, voltage is input to the major loop of 590 total digital DC speed-adjustable driving devices 7, sequence number 1 comprises three-phase alternating current filter reactor and three-phase alternating current fastp-acting fuse, the three-phase alternating current filter reactor be one without the air core coil of permeability magnetic material, when electric system is short-circuited, can produce the very large short-circuit current of numerical value, this reactor of connecting herein, can increase short-circuit impedance, limiting short-circuit current, to keep the dynamic stability of planer electrical control, the three-phase alternating current fastp-acting fuse mainly is to work as planer main shaft control dc speed-regulating motor 2 or total digital DC speed-adjustable driving device 7 is short-circuited, when electric current seriously transships, can fuse in moment, limiting short-circuit current, the protection power equipment, total digital DC speed-adjustable driving device 7 with control dc speed-regulating motor 2 with the planer main shaft of planer main shaft pulse rotary encoder 8 and be connected, the direct current output A+ of total digital DC speed-adjustable driving device 7, A-is connected to the armature end that the planer main shaft is controlled dc speed-regulating motor 2, the signal feedback of planer main shaft pulse rotary encoder 8 is to the feedback input end of total digital DC speed-adjustable driving device 7 and the pulse input end of PLC Programmable Logic Controller 11, the alternating voltage of input is 380V, planer main shaft pulse rotary encoder 8 access CP1E Omron PLC PLC Programmable Logic Controllers 11, the main power circuit structure of total digital DC speed-adjustable driving device 7 is the rectification of inverse parallel three-phase thyristor bridge, control circuit uses the sixteen bit microprocessor, realize the dicyclo control of electric current loop and speed ring, by man-machine interface and software configuration, the planer main shaft being controlled armature voltage and the armature supply of dc speed-regulating motor 2 controls, planer main shaft pulse rotary encoder 8 can be calculated motor speed by the umber of pulse of unit of account in the time, realize the closed loop adjustment of speed ring, with accurate control main shaft operation, planer main shaft pulse rotary encoder 8 directly is installed on the axle head of motor, but the A+ that when motor rotates, scrambler is sent and B+ direction signal and umber of pulse are input to the input end of PLC Programmable Logic Controller 11, the three-phase alternating current input power through controlling power transformer 10 access PLC Programmable Logic Controllers 11, is alternating current 220V by controlling power transformer 10 step-downs, as the input power of PLC Programmable 11, the key property of PLC Programmable Logic Controller 11 is to programme by special software CX-PROGRAMMER FOR CPIE, set and monitor and to realize response input fast, strengthen the high-speed counting function, PLC programmable high-speed counter uses the software reset, the pattern of pulse and direction input, stop portion 9 is controlled at planer push-botton operation station and lathe bed, the pulse rotary rotaring signal that the scrambler rotation is sent deposits in the DM register of PLC, the umber of pulse of setting is deposited in another DM register, utilize the CMPL function to carry out real-time comparison and computing to the variate-value in two registers, when the numerical value of PLC programmable high-speed counter 11 reaches the umber of pulse of setting, by software programming, the output control signal is controlled total digital DC speed-adjustable driving device 7 and is changed the given signal 6 of controlling motor sense of rotation and rotational speed, move forward and backward to reach accurate control planing machine platen, the input signal of PLC programmable high-speed counter 11 is controlled the control signal of stop portion 9 and receives the rotating signal of controlling the planer main shaft pulse rotary encoder 8 of dc speed-regulating motor 2 from the planer main shaft from planer push-botton operation station and lathe bed for accepting, pulse input as PLC Programmable Logic Controller 11, planer push-botton operation station and lathe bed are controlled the location of advancing that stop portion 9 is used for controlling the worktable of planer, are retreated the location, and worktable circulation, the rising of crossbeam, decline, the cutter lifting of knife rest, feed, the output signal of PLC Programmable Logic Controller 11 is enable with enabling signal 3 and control the motor sense of rotation and the given signal 6 of rotational speed, the output signal of PLC Programmable Logic Controller 11 makes controls 7 drivings of total digital DC speed-adjustable driving device, the tachometer gage of excitation of direct current generator 4, direct current generator is connected with the armature supply table and is connected with total digital DC speed-adjustable driving device 7, planer in process, tachometer gage and armature supply table 5 that must the timing monitoring direct current generator.

Fig. 4 is that ladder diagram is controlled in commutation of the present utility model, and sequence number 1 is for retreating navigation button; Sequence number 2 resets for counter; Sequence number 3 is assignment directive; Sequence number 4 is the navigation button that advances; Sequence number 5 is for reading instruction; Sequence number 6 is less than comparer; Sequence number 7 is for retreating the commutation instruction; Sequence number 8 is the commutation instruction of advancing; Sequence number 9 is greater than comparer; Sequence number 10 is changed for advancing and is retreated auxiliary reclay; Sequence number 11 is replaced the auxiliary reclay that advances after being.

Claims (1)

1. double-housing planer commutation automatic control system, it is characterized in that: the input end of three-phase alternating current input power access three-phase alternating current filter reactor, contact with the three-phase alternating current fastp-acting fuse, voltage is input to the major loop of total digital DC speed-adjustable driving device (7), total digital DC speed-adjustable driving device (7) with control dc speed-regulating motor (2) with the planer main shaft of planer main shaft pulse rotary encoder (8) and be connected, planer main shaft pulse rotary encoder (8) accesses PLC Programmable Logic Controller (11); The three-phase alternating current input power is through controlling power transformer (10) access PLC Programmable Logic Controller (11), the input signal of PLC Programmable Logic Controller (11) is controlled the control signal of stop portion (9) and receives the rotating signal (12) of controlling the planer main shaft pulse rotary encoder (8) of dc speed-regulating motor (2) from the planer main shaft from planer push-botton operation station and lathe bed for accepting, as the pulse input of PLC Programmable Logic Controller (11); The output signal of PLC Programmable Logic Controller (11) is for enabling and enabling signal (3) and control the motor sense of rotation and the given signal (6) of rotational speed, the output signal of PLC Programmable Logic Controller (11) makes controls total digital DC speed-adjustable driving device (7) driving, and the tachometer gage of dc speed-regulating motor excitation (4), direct current generator is connected 5 with the armature supply table) be connected with total digital DC speed-adjustable driving device (7).

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