SJZ—65 awl double screw is plastic extruder, it is one of series products that Shanghai Shen Wei amounts to plastic and mechanical limited company to produce. Its electric equipment system basically is formed by leader share and subsidiary engine part. Leader share includes advocate the control of electric machinery, control that gives makings electric machinery, heat composition of system of the makings on control and bedspring. Subsidiary engine part includes vavuum pump, water pump, finalize the design the shift of the stage, draw gear and cut device composition.
Breakdown gives makings snail the eyewinker is entered to bring about inside the canister
Giving what makings electric machinery cannot run to expect electric machinery is used normally is electric machinery of servo of dc of permanent magnetism of SY series rare earth. 0.75KW, 160V, 5.6A, 1500 turn / cent. Timing device is the 512C timing device of company of British Europe land. To the breakdown of makings electric machinery average performance is in the following respects: 1 electric machinery cannot be started; Rotate speed of 2 electric machinery is flabby. When electric machinery cannot be started, it is normal to check power source voltage above all; Examine next stop protective pushbutton urgently to whether be disconnecting position; The pushbutton that start is normal; Flow too and break magnetism to protect whether movement; These breakdown compare good processing. Electric machinery rotate speed is flabby, have the following reasons commonly:
1, advocate accuse board multiple of speed annulus enlarge does not accord with a requirement, can adjust RP5 potentiometer, but should note clear and former position. If do not act well, want to regain former position.
2, timing potentiometer is bad: Change potentiometer.
3, brush problem: Inspect brush wear out condition, change new brush.
4, the trouble that other reason causes. Of the electric equipment trouble that gives makings system generally speaking or better processing, but the thing of accident happening let me be expended quite turn over setbacks. Drive in when production, the newspaper repairs machine station operator say to expect electric machinery just was started, had not turned rise to stop.
I come to the spot, after opening distribution box, discovery sheds protective act too (light of glow diode V27 is bright) , remove after protection, power cut is new power transmission, press the pushbutton that start, contactor is sucked close, normal, adjust potentiometer is quickened to makings electric machinery, suddenly the reading of ammeter rises quickly, did not have reaction next, shed protection too movement. Cross electric current to explain load is exorbitant, but when regular job, the load that takes to place of makings electric machinery is very small, after its electric crankshaft and a small gear gear-box join, drive odd screw to enter makings, electric current is commonly under 2A. Remove electric machinery line is made carry a test for nothing (the white) knitting the lamp that receives a 60 tile, start afresh, press the pushbutton that start, contactor is sucked close, working indicator light is bright, rotate it is normal that potentiometer is quickened, it is normal to measure control plate 512C to output voltage, explain timing control plate does not have a problem. After eliminating to control a system, begin to check electric machinery. Expect via be being measured electric machinery is good, insulation also does not have a problem, brush of the examination after tearing open next electric machinery does not have a problem, electric machinery of the roll that use a hand is very agile, also did not hear unusual voice, then, trouble spot drops to gear gear-box above, ravel after gear gear-box, still did not discover a problem.
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