Kushindwa iwezekanavyo na hatua za utambuzi wa mfumo wa majimaji ya mashine ya ukingo wa sindano

When using an injection molding machine, kushindwa iwezekanavyo kwa mfumo wa majimaji ya mashine ya ukingo wa sindano ni tofauti. Ni matokeo ya mchanganyiko wa mambo mengi, na mtawanyiko ni mkubwa kiasi. Kwa hiyo, wakati wa kufanya utambuzi wa makosa, inahitajika kuchambua sababu zinazosababisha kosa moja baada ya nyingine, pay attention to their internal connections, and find out the main contradictions, so that they can be resolved relatively easily.

Under normal circumstances, the failure of the hydraulic system of the injection molding machine is not accidental. Any failure will be accompanied by various abnormal signs before it evolves into a major failure. These signs can be summarized as:

(1) There are abnormal sounds, such as pumps, motors, and thermostatic valves.
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(2) The operating speed of the hydraulic motors for slewing, walking, and hoisting, as well as the hydraulic cylinders of various working devices, is reduced and weak.
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(3) The oil tank level drops and the oil deteriorates.
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(4) Oil leakage occurred on the outer surface of hydraulic components.
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(5) The oil temperature is too high.
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(6) Pipeline damage, looseness and vibration occur.
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(7) The smell of focal nucleus appears and so on.
All of the above phenomena can be discovered by naked eye observation, hand touch, and nose smell as long as you pay careful attention during use. In actual work, people use this on-site method as the first-hand information to analyze the failure, and then based on experience, synthesize these first-hand information to analyze the actual problem and find out the cause of the failure as early as possible. Be resolved.

Walakini, in actual work, it is often impossible to accurately diagnose the cause of the failure at one time. Wakati huu, several iterations are required, hiyo ni, repeated analysis and repeated inspections until the cause of the failure is found.

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In actual work, wafanyakazi wa uhandisi na kiufundi mara nyingi hufuata hatua zifuatazo ili kukabiliana na makosa katika mfumo wa majimaji.
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(1) Kuelewa mfumo
Wakati fulani sindano ukingo mashine ina kushindwa kwa majimaji, kwanza unapaswa kuelewa mfumo wa majimaji. Ni kufahamiana na data na ripoti husika za kiufundi, kuelewa kanuni ya kazi ya mfumo wa shinikizo la gesi yenye maji, kuelewa muundo wa msingi wa vipengele mbalimbali na kazi maalum katika mfumo, na kuweza kujua mchakato wa mtiririko wa kioevu chini yake mazingira mbalimbali ya kazi. Kabla ya kukagua vifaa, kuchunguza hali ya kazi ya mfumo na kurekodi data muhimu ya kiufundi, kama vile kasi ya kufanya kazi, shinikizo, mtiririko, muda wa mzunguko, na kadhalika.
(2) Muulize opereta
Muhoji mwendeshaji anayeendesha mashine ya ukingo wa sindano iliyoharibika. Ask about the characteristics of the equipment and its functional characteristics; ask about the basic phenomena when the equipment fails, such as whether the hydraulic pump can be started, whether the system oil temperature is too high, whether the system noise is too high, whether the hydraulic cylinder can drive the load, na kadhalika.
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(3) Verify the phenomenon provided by the operator and check carefully
The phenomenon proposed by the operator is further verified by observing the meter readings, working speed, listening to the sound, checking whether the oil and actuators have malfunctions, na kadhalika.; then, according to the fluid flow in the system, look carefully along the loop from the tank in turn, and on time Record the observation.

During the inspection, angalia kwa uangalifu mafuta kwenye tanki la mafuta ili kuamua ikiwa uchafu huingia kwenye mfumo. Kuathiri uendeshaji wa kawaida wa kila sehemu ya mfumo; iguse kwa mkono ili kuangalia kama bomba la kuingiza mafuta na bomba la mafuta yenye shinikizo la juu zimeenea, laini, kuvuja, au kuharibiwa; angalia viungo vya bomba vya vipengele vya udhibiti na screws za kufunga za nyumba ikiwa ni huru; hatimaye angalia mafuta na fimbo ya Piston ya silinda ya majimaji. Katika kila hatua ya ukaguzi, tahadhari inapaswa kulipwa ikiwa kuna operesheni isiyofaa au matengenezo ili kupata sababu ya kushindwa.
(4) Orodhesha sababu zinazowezekana za kutofaulu kulingana na habari iliyopatikana kutoka kwa ufahamu, uchunguzi, uhakiki na ukaguzi
Wakati huu, inapaswa kukumbushwa katika akili kwamba jambo la kushindwa linaweza kusababishwa na sababu mbili au zaidi. Kwa mfano, the speed of the actuator may decrease, which may be due to the wear of hydraulic pump parts, or the internal leakage of the hydraulic cylinder may increase; kwa mfano, If the oil temperature is too high, it may be that the amount of oil in the oil tank is not enough, or that the oil pollution blocks the heat dissipation surface, or the pressure of the overflow valve is adjusted too high.
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(5) Make a conclusion
According to the list of failure causes, the inspection sequence is arranged according to the principle of “easy first and then difficult”. First select those that can be restored to normal after a simple inspection or repair, so that the inspection work can be completed in the shortest time.
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(6) Verification conclusion
Once through the above steps, find out the cause of the failure of the injection molding machine, start troubleshooting. Troubleshooting includes checking pressure and flow with appropriate test equipment, disassembling the casing cover, and checking pumps, motors and other components. These test inspections are the basis for judging the replacement of parts and hydraulic components. In actual work, there is often no suitable test device to carry out inspections. Wakati huu, it is necessary to replace the pump, motor, hydraulic valve and other component assemblies as an effective means of troubleshooting.In the process of finding and troubleshooting faults, you should be careful, makini, cautious, and strive to be accurate, avoid blindly disassembling parts, or use improper methods to deal with faults, so as to avoid new damages caused by this. Except when necessary, do not easily disassemble the hydraulic components, because unnecessary and premature disassembly and assembly will reduce the service life of these components.

Joto bora la kazi ya mfumo wa majimaji inapaswa kuwa kati 45 digrii na 50 digrii. Sababu ni kwamba mfumo wa majimaji umeundwa kulingana na mnato wa mafuta ya shinikizo iliyochaguliwa, lakini mnato utabadilika na joto la mafuta, ambayo itaathiri kazi katika mfumo. Vipengele, kama vile mitungi ya mafuta, valves ya majimaji, na kadhalika., kupunguza usahihi wa udhibiti na unyeti wa majibu, hasa kwa mashine za sindano kwa usahihi.
Kwa
Wakati huo huo, ikiwa hali ya joto ni ya juu sana, itaharakisha kuzeeka kwa muhuri na kuifanya kuwa ngumu na kupasuka; ikiwa hali ya joto ni ya chini sana, the processing energy will be consumed and the operating speed will decrease. Kwa hiyo, ni muhimu kulipa kipaumbele kwa joto la kazi la mafuta ya majimaji. Kuna sababu nyingi za joto la juu la mafuta, lakini wengi wao ni kutokana na kushindwa kwa mzunguko wa mafuta au kushindwa kwa mfumo wa baridi.
Kwa
Insufficient oil will cause the oil temperature to rise easily, and the air will easily dissolve into the oil, which will affect the oil quality and the normal operation of the hydraulic system. Insufficient oil is usually caused by oil leakage or loss during repairs. Kwa sababu hii, you should pay attention to check whether there is any leakage. If necessary, replace worn seals and tighten loose joints as soon as possible. After maintenance, check the amount of oil in the tank and replenish it in time.

One of the important properties of hydraulic oil is its chemical stability, hiyo ni, oxidation stability. Oxidation is the most important factor that determines the effective service life of hydraulic oil. The insoluble matter such as wood tar, sludge and carbon residue generated by oxidation will contaminate the hydraulic system, increase the wear of hydraulic components, reduce various gaps, block small holes, and eventually cause The hydraulic system is malfunctioning.

The oxidation rate of hydraulic oil depends on many factors such as itself and working conditions, among which temperature is one of the main factors. Kwa hiyo, it is necessary to use suitable hydraulic oil and regularly check the oxidation degree of the hydraulic oil (judged from the darker color of the oil itself) ), it is absolutely necessary to actively change the oil after a certain number of working hours.　　
Kwa
During the use of the sindano ukingo mashine, always check the pressure oil level, the pressure of the oil pump and the cleanliness of the pressure oil. When encountering wet weather, the concentration of the pressure oil must be checked daily, and the water pipes must be checked frequently to prevent water from being mixed in. In the pressure oil, the oil filter is blocked. Check the fuel tank frequently to keep it clean to prevent debris from falling in. Replenish pressure oil on time.
For the lubrication of the moving parts, the travel switch, the tightening of the screws, and whether the oil hoses and joints are leaking, they should be routinely checked once a week to keep them in good condition. If they are loose, they should be replaced or tightened.　　
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Zaidi ya hayo, if a pressure oil is used for too long or too long, the pressure oil can be replaced, so as to extend the life of the oil switch, oil pump and sealing ring.