دستگاه قالب گیری تزریقی یکی از تجهیزات پرکاربرد در صنعت پردازش پلاستیک است, معمولاً باید برای مدت طولانی کار کند, بنابراین چگونه می توان از کار عادی و پایدار دستگاه قالب گیری تزریقی در تولید مداوم اطمینان حاصل کرد, برای سازنده یا کاربر دستگاه قالب گیری تزریقی فرقی نمی کند, it is a problem worthy of attention and efforts to solve. As far as the user is concerned, under the premise of selecting the injection molding machine correctly, regular preventive maintenance is an effective way to ensure the normal work of injection molding machine. The so-called preventive maintenance is a series of preventive work and inspection, so as to avoid machine failure and extend the working life of all parts, مثلا, the purpose of preventive maintenance is to turn a failure that causes production stoppage into a predictable and planned downtime or overhaul, and to detect and replace damaged parts in a timely manner to prevent chain damage.
transmission is hydraulic oil as the working medium, استفاده از حجم کاری مهر و موم شده فشار روغن هیدرولیک می تواند انرژی یا قدرت یا سیگنال را انتقال دهد. کیفیت روغن هیدرولیک و مهر و موم به طور مستقیم بر کار پایدار سیستم هیدرولیک تأثیر می گذارد, و به طور غیر مستقیم بر کیفیت محصولات تاثیر می گذارد. برای جلوگیری و کاهش خرابی سیستم هیدرولیک, کاهش سایش و پارگی, افزایش عمر, ما باید به شدت از روغن هیدرولیک استفاده و نگهداری کنیم.
به طور کلی, 70% خرابی دستگاه های هیدرولیک ناشی از استفاده و نگهداری نادرست یا نادرست روغن هیدرولیک است.. حفظ عادات نگهداری خوب و نگهداری پیشگیرانه موثرترین راه برای کاهش و جلوگیری از خرابی هیدرولیک دستگاه است.. بنابراین نگهداری خوب روغن هیدرولیک و سیستم هیدرولیک بسیار مهم است. از این رو, لازم است مشخصات مورد نیاز روغن هیدرولیک معرفی شود.
The most important properties of hydraulic oil are viscosity and cleanliness, as well as better oxidation resistance, anti-wear, anti-foaming, anti-corrosion and good lubrication performance
The viscosity of hydraulic oil is expressed as the average value of the kinematic viscosity at 40 درجه سانتی گراد. Our commonly used No. 46 anti-wear hydraulic oil (46csT / 40 °c) refers to this hydraulic oil at 40 °C for the average viscosity of 46 M2 / اس.
The relationship between hydraulic oil viscosity and pressure and temperature is as follows: temperature increases, viscosity decreases; pressure increases, viscosity increases.

Periodic testing of hydraulic oil performance. If the oil is contaminated or deteriorated, the life of the injection molding machine will shorten, and failure may occur. از این رو, it is necessary to test oil regularly in order to detect changes in oil properties. بر این اساس, تصمیم بگیرید که روغن را عوض کنید یا خیر.
ما می توانیم از یک روش بصری ساده برای درک وضعیت روغن استفاده کنیم:
تست ظاهر: نمونه روغن جدید و نمونه روغن قدیمی را در لوله های آزمایش مربوطه خود قرار دهید, رنگ آنها را مقایسه کنید, وضوح, وجود اشیاء شناور و بارش آب در پایین لوله های آزمایش.
تست رها کردن: قطره روغن قدیمی را روی کاغذ صافی قرار دهید (ورق خشک) , صبر کن 1 ساعت و سپس مشاهده کنید. اگر روغن کثیف است یا به طور آشکار خراب شده است, آلاینده به راحتی قابل مشاهده خواهد بود
اصطکاک انگشت: استفاده از روغن قدیمی در اصطکاک انگشت, اگر کاهش ویسکوزیته بدتر شود, احساس خشن بودن, هیچ احساس غلیظی وجود ندارد. قطرات روغن به آرامی از انگشتان می ریزد, و هیچ پدیده بازگشتی وجود ندارد.
In principle, the hydraulic oil is changed every 5000 machine operating hours or at most one year. No matter how good the hydraulic oil is, after being used for a certain period of time, the metal and rubber particles of the worn pump and other moving parts will enter the oil, which will cause the generation of sludge and dirt. In normal maintenance, there will be some Contaminants are deposited on the parts and carried into the hydraulic oil.
Even if hydraulic oil is used correctly, it is generally considered that its working life is 1 year, up to 2-3 سال ها. Once it deteriorates, do not hesitate to change to new oil. Good oil quality is the cornerstone of maintaining the stability of the hydraulic system.
Hydraulic maintenance is not as simple as pumping old oil, adding new oil, or just adding some new oil. Not only change the oil, but it is also important to clean the hydraulic equipment.
After draining the old oil, do not wipe the oil tank with a rag to prevent the end of the thread from blocking the filter. Use kerosene and copper brushes to clean the magnetic frame and filter in the fuel tank, and use an air gun to clean and blow dry.
The air filter outside the fuel tank makes the air in and out of the fuel tank easy according to the change of the oil level in the fuel tank. Every time the oil is changed for maintenance, the air filter should be taken out, cleaned with kerosene, and dried with an air gun. Failure to clean may cause stolen goods to enter the fuel tank and affect the oil quality.
برای تمیز کردن ترازو داخل و خارج لوله کولر, می توانید از محلول اسید هیدروکلریک ضعیف برای شستشو استفاده کنید, با آب بشویید, و با تفنگ بادی خشک کنید. از یک برس مسی برای تمیز کردن کثیفی روی مانع استفاده کنید.
ابتدا از یک پارچه ضایعاتی و تفنگ هوا برای تمیز کردن کثیفی های خارج از شیر استفاده کنید. دوشاخه را جدا کرده و شیر روغن را جدا کنید. از یک برس نفت سفید برای تمیز کردن هسته شیر استفاده کنید, لجن و زباله های روی بدنه شیر, و با تفنگ بادی خشک کنید, توجه به جداسازی و مونتاژ هسته سوپاپ، معکوس آن را نصب نکنید, حلقه O را از دست ندهید.
موازی بودن قالب می تواند به بهترین شکل وضعیت قسمت گیره را منعکس کند. The non-parallel template will make the product unqualified and increase the wear of the equipment and mold. The parallelism of the template can be initially reflected by the movement of the tail plate during mold clamping and the appearance analysis of the product, but the exact situation needs to be detected with a dial indicator and other instruments. The adjustment of the parallelism of the template must be carried out by a familiar person in steps, otherwise improper adjustment will cause greater damage to the machine.
The mold thickness adjustment system should be used regularly to adjust the mold thickness from the thickest to the thinnest to ensure smooth movement. For machines that use the same mold for a long time, this inspection must be performed to avoid malfunctions.
All mechanical moving parts need to be properly lubricated, and the central lubrication system is one of the must-haves for the current injection molding machine. The amount of oil in the central lubrication system should be checked frequently to see if it is full, and the lubricating oil used must be clean and free of impurities to ensure that all lubricating positions have lubricating oil supply. If the oil pipe is blocked or leaking, it should be replaced or repaired immediately. Most mechanical wear occurs due to lack of lubrication, so adequate attention must be paid to lubrication.
Vibration or unsmooth movement may be caused by improper speed adjustment, speed change and uncoordinated time, or mechanical or oil pressure adjustment. This kind of vibration will accelerate the wear of the mechanical parts and loosen the tightened screws, so vibration should be reduced and avoided.
When the bearing is working, there are abnormal noises, or the temperature rises, it means that the inside of the bearing has been worn out, and it should be checked or replaced in time and refilled with grease.
6. سیستم تزریق
پیچ تزریق, check ring and barrel constitute the heart of the injection molding machine, which determines the quality and efficiency of the processing and must be kept in good working condition. اولین, take necessary measures to prevent non-plastic debris from mixing into the plastic material flow, and then pay attention to checking the correct gap between the screw and the barrel, and the check ring and the barrel. The normal gap should be able to seal the plastic backflow and produce plastic When it is found that the melting action is slow, the melting material has spots and black spots, or the product is unstable, the wear of the screw, the non-return ring and the barrel should be checked.
Unfastened wires in the connector will cause high temperature or spark damage at the connector position. کانکتور ضعیف نیز بر انتقال سیگنال تأثیر می گذارد; کانکتور روی کنتاکتور به دلیل ارتعاش عمل الکترومغناطیسی راحت تر از بین می رود, so it is necessary to check the wire connector regularly Position and tighten.
بطور کلی, the motor is air-cooled. The accumulation of dust causes difficulty in heat dissipation. از این رو, it is cleaned regularly every year. A motor overload cutoff is usually installed in the circuit. The limit current of the protection device is adjustable and should be adjusted according to the motor power. همزمان, once the overload protector is activated, it should be determined to check whether there is phase loss, poor contact or high oil temperature before pressing the return position switch.
The heating cylinder should be checked regularly to ensure that it is fastened to ensure effective heat transfer. The burning of the heating cylinder is not easy to detect in normal production. به این دلیل, pay attention to the working condition of the temperature controller and judge whether the heating cylinder is normal. علاوه بر این, the common damage of the heating cylinder is the wire connection. Due to the poor joint, the contact resistance increases, and the local overheating of the connection causes the interface to be oxidized and damaged.
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