Inyeksion kalıplama mashinasining gidravlik tizimining mumkin bo'lgan nosozliklari va diagnostika bosqichlari

When using an injection molding machine, qarshi kalıplama mashinasining gidravlik tizimining mumkin bo'lgan nosozliklari xilma-xildir. Bu ko'plab omillarning kombinatsiyasi natijasidir, dispersiyasi esa nisbatan katta. Shuning uchun, xato diagnostikasini amalga oshirayotganda, aybni keltirib chiqaruvchi omillarni birma-bir tahlil qilish kerak, pay attention to their internal connections, and find out the main contradictions, so that they can be resolved relatively easily.

Oddiy sharoitlarda, 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.

Biroq,, in actual work, it is often impossible to accurately diagnose the cause of the failure at one time. Ushbu paytda, several iterations are required, anavi, repeated analysis and repeated inspections until the cause of the failure is found.

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In actual work, engineering and technical personnel often follow the following steps to deal with faults in the hydraulic system.
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(1) Understand the system
Qachon ma'lum qarshi kalıplama mashinasi gidravlik nosozlik bor, avval gidravlik tizimni tushunishingiz kerak. Bu tegishli texnik ma'lumotlar va hisobotlar bilan tanishishdir, suyultirilgan gaz bosimi tizimining ishlash printsipini tushunish, turli komponentlarning asosiy tuzilishini va tizimdagi o'ziga xos funktsiyalarni tushunish, ostidagi suyuqlik oqimi jarayonini aniqlay olish turli xil ish sharoitlari. Uskunani tekshirishdan oldin, tizimning ish sharoitlariga rioya qilish va zarur texnik ma'lumotlarni yozib olish, ish tezligi kabi, bosim, oqim, tsikl vaqti, va boshqalar.
(2) Operatordan so'rang
Noto'g'ri ishlaydigan qarshi kalıplama mashinasini boshqaruvchi operatorni so'roq qiling. Uskunaning xususiyatlari va uning funktsional xususiyatlari haqida so'rang; uskunalar ishlamay qolganda asosiy hodisalar haqida so'rang, gidravlik nasosni ishga tushirish mumkinmi kabi, tizim moyining harorati juda yuqori bo'ladimi, tizim shovqini juda yuqori bo'ladimi, gidravlik silindr yukni boshqara oladimi, va boshqalar.
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(3) Operator tomonidan taqdim etilgan hodisani tekshiring va diqqat bilan tekshiring
Operator tomonidan taklif qilingan hodisa hisoblagich ko'rsatkichlarini kuzatish orqali qo'shimcha ravishda tekshiriladi, ish tezligi, ovoz tinglash, moy va aktuatorlarda nosozliklar mavjudligini tekshirish, va boshqalar.; keyin, tizimdagi suyuqlik oqimiga ko'ra, navbat bilan tankdan pastadir bo'ylab diqqat bilan qarang, va o'z vaqtida Kuzatishni yozib oling.

Tekshirish paytida, tizimga kirni kiritish yoki yo'qligini aniqlash uchun yonilg'i idishidagi yog'ni diqqat bilan tekshiring. Tizimning har bir komponentining normal ishlashiga ta'sir qilish; touch it by hand to check whether the oil inlet pipe and high-pressure oil pipe are proliferated, softened, leaked, or damaged; check the pipe joints of the control components and the mounting screws of the housing if they are loose; finally check the oil and Piston rod of hydraulic cylinder. In each step of the inspection, attention should be paid to whether there is improper operation or maintenance to find the cause of the failure.
(4) List the possible causes of failure based on the information obtained from understanding, inquiry, verification and inspection
Ushbu paytda, it should be kept in mind that a failure phenomenon may be caused by two or more reasons. Masalan, the speed of the actuator may decrease, which may be due to the wear of hydraulic pump parts, yoki gidravlik tsilindrning ichki oqishi ortishi mumkin; misol uchun, Yog 'harorati juda yuqori bo'lsa, neft idishidagi yog' miqdori etarli emas bo'lishi mumkin, yoki yog 'ifloslanishi issiqlik tarqalish yuzasini bloklaydi, yoki toshib ketish klapanining bosimi juda yuqori sozlangan.
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(5) Xulosa qiling
Muvaffaqiyatsizlik sabablari ro'yxatiga ko'ra, tekshirish ketma-ketligi tamoyiliga muvofiq tartibga solinadi “avval oson, keyin qiyin”. Avval oddiy tekshirish yoki ta'mirlashdan keyin normal holatga keltirilishi mumkin bo'lganlarni tanlang, tekshirish ishlari eng qisqa vaqt ichida bajarilishi uchun.
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(6) Tasdiqlash xulosasi
Yuqoridagi bosqichlardan bir marta, qarshi kalıplama mashinasining ishdan chiqishi sababini bilib oling, muammolarni bartaraf qilishni boshlang. Muammolarni bartaraf etish tegishli sinov uskunalari yordamida bosim va oqimni tekshirishni o'z ichiga oladi, korpus qopqog'ini demontaj qilish, va nasoslarni tekshirish, motorlar va boshqa komponentlar. Ushbu sinov tekshiruvlari qismlar va gidravlik qismlarni almashtirishni baholash uchun asosdir. In actual work, ko'pincha tekshiruvlarni o'tkazish uchun mos sinov qurilmasi yo'q. Ushbu paytda, nasosni almashtirish kerak, motor, gidravlik klapan va boshqa komponentlar agregatlari muammolarni bartaraf etishning samarali vositasi sifatida. Nosozliklarni topish va bartaraf etish jarayonida, ehtiyot bo'lishingiz kerak, ehtiyotkor, ehtiyotkor, va aniq bo'lishga intiling, qismlarni ko'r-ko'rona demontaj qilishdan saqlaning, yoki nosozliklarni bartaraf etish uchun noto'g'ri usullardan foydalaning, buning natijasida etkazilgan yangi zararlarning oldini olish uchun. Zarur bo'lganda bundan mustasno, gidravlik qismlarni osongina qismlarga ajratmang, because unnecessary and premature disassembly and assembly will reduce the service life of these components.

Gidrotexnik tizimning ideal ishlashi harorati bo'lishi kerak 45 daraja va 50 dog '. Sababi, gidravlik tizim tanlangan bosimli yog 'qovushqoqligi bo'yicha ishlab chiqilgan, lekin yopishqoqlik yog 'harorati bilan o'zgaradi, bu tizimdagi ishlarga ta'sir qiladi. Tarkibiy qismlar, masalan, yog 'silindrlari kabi, Gidravlik klapanlar, va boshqalar., Nazoratning aniqligini va javob sezgirligini kamaytirish, Ayniqsa, aniq in'ektsiya mashinalari uchun.
Kimga
Xuddi o'sha payt, Agar harorat juda yuqori bo'lsa, bu muhrning qarishini tezlashtiradi va uning qattiqlashishi va yorilishiga olib keladi; agar harorat juda past bo'lsa, the processing energy will be consumed and the operating speed will decrease. Shuning uchun, Gidravlik moyning ish haroratiga diqqat bilan e'tibor berish kerak. Neft harorati uchun juda ko'p sabablar mavjud, Ammo ularning aksariyati neft zanjirining ishlamay qolishi yoki sovutish tizimining ishdan chiqishi tufayli.
Kimga
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. Shu asos bilan, 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, anavi, oxidation stability. Oksidlanish gidravlik moyning samarali ishlash muddatini belgilovchi eng muhim omil hisoblanadi. Yog'och smolasi kabi erimaydigan moddalar, Oksidlanish natijasida hosil bo'lgan loy va uglerod qoldiqlari gidravlik tizimni ifloslantiradi, gidravlik qismlarning aşınmasını oshirish, turli xil bo'shliqlarni kamaytirish, kichik teshiklarni to'sib qo'ying, va oxir-oqibat sabab Shlangi tizim noto'g'ri ishlamoqda.

Shlangi moyning oksidlanish darajasi o'zi va ish sharoitlari kabi ko'plab omillarga bog'liq, ular orasida harorat asosiy omillardan biridir. Shuning uchun, mos keladigan gidravlik moydan foydalanish va gidravlik moyning oksidlanish darajasini muntazam tekshirib turish kerak (moyning o'zi quyuqroq rangga qarab baholanadi) ), ma'lum miqdordagi ish soatlaridan keyin moyni faol ravishda o'zgartirish mutlaqo kerak.　　
Kimga
Foydalanish jarayonida qarshi kalıplama mashinasi, 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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Bunga qo'chimcha, 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.