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Selecting the right plastic injection molding machine is one of the most important criteria in making quality parts consistently and profitably. The right machine will help keep costs low and make you more competitive. This will allow you to sell more parts, earn more money and at the same time establish a reputation as a quality manufacturer.

1. Select the right model: The model and series are determined by the product and plastic.

Since there are so many types of injection machines, it is necessary to correctly determine which injection molding machine or series the product should be produced from at the beginning, such as general thermoplastics or bakelite raw materials or PET raw materials. Color, two-color, multi-color, interlayer or mixed color, etc.

2. It can be put down “large column inner distance” and “mold thickness” of the machine are judged by the mold size.

The width and height of the mold must be less than or at least one side less than the inner distance of the large column; the width and height of the mold should preferably be within the size of the mold plate; the thickness of the mold must be between the thickness of the injection molding machine; the width and height of the mold must meet the minimum mold size recommended by the injection molding machine, and it will not work if it is too small.

3. Get it: It is judged by the mold and the finished product whether the “pallet stroke” is enough for the finished product to be taken out.

The mold opening stroke must be at least more than twice the height of the finished product in the direction of opening and closing the mold, and the length of the sprue must be included; the mold support stroke must be sufficient to eject the finished product.

Which features matter most in a good injection molding system?

I’m thinking about an injection molding system for a relatively low-volume application, but I can’t decide on the features that are most important. What should I be looking for?

When it comes to injection molding systems, there are a few key features that are most important:

1. The system should be able to produce parts with a high degree of accuracy and consistency.

2. Your injection molding machine must operate quickly and produce a large quantity of parts without compromising quality. Also you should be able to make modifications on the fly if necessary.

3. Handling a wide range of materials, including both thermoplastics and thermosets is also a good characteristic to look for.

4. The injection molding machine should be able to integrate easily with other manufacturing equipment, allowing for a streamlined manufacturing process.

5. Easy Maintenance is always a great feature.

Searching for a injection molding machine supplier?

We are a professional supplier of injection molding machine. If you want to know about more our injection molding machine, please click here to contact us immediately.

Maintenance of the electrical system of the injection molding machine

ü When checking the high-voltage components in the machine, if it is not necessary, the main power supply should not be turned on.

ü When changing the mold, it is impossible to make the cooling water flow into the control box.

ü Check whether the temperature in the control box is too high to affect the normal operation of the electronic board.

ü When replacing the relay, the specified voltage relay should be used.

Maintenance of hydraulic system

ü The pressure temperature of the injection molding machine should be kept between 30-50 degrees Celsius. If the oil temperature exceeds 60 degrees Celsius, the following problems will occur: pressure oil deteriorates due to oxidation.

ü Oil pump damage, oil leakage and pressure drop due to reduced pressure oil viscosity and the working efficiency of the decompression oil switch.Accelerates the speed of oil seal aging.

ü Prevent the cooling water from leaking into the oil cylinder, and pay special attention to check whether there is water leakage inside the oil cooler. Every 6 months or so, the oil cooler should be removed and cleaned inside.

ü The pressure oil must be replaced every 3000-4000 hours of operation of the injection molding machine. When replacing the pressure oil, do not mix the old and new oil, and at the same time, the oil screen in the oil cylinder should be turned off for cleaning.

ü The oil switch fails because the valve core is blocked by foreign objects. The valve core should be removed from the oil switch and cleaned with diesel oil or kerosene (or immersed in clean pressure oil for cleaning), and then use compressed air to remove foreign objects. Unless it is confirmed that the oil switch is blocked by foreign objects and causes the injection molding machine to malfunction, do not remove the oil switch casually.

Maintenance of the clamping part

ü The working life of the hinge of the clamping part is very long, but each movable part should be properly lubricated, otherwise the hinge will wear and reduce the life.

ü Keep the four Corinthian pillars clean.

ü Keep the sliding feet and rails of the moving template clean and lubricated.

ü Avoid using mold clamping close to or exceeding the working pressure.

ü When adjusting the mold, the fast mold clamping speed cannot be used.

ü Control the stroke position of the clamping action to the most appropriate position to reduce the impact on the machine during clamping.

Maintenance of the injection part

ü Keep the guide rod of the injection table lubricated and clean.

ü Keep the surface of the injection table clean and dry.

ü Except plastics, pigments and additives, do not put anything into the hopper. If you use the return material, you must add a hopper magnetic frame to the hopper to prevent metal fragments from entering the melt tube.

ü When the glue barrel does not reach the preset temperature, do not start the glue melting motor, and do not use the reverse cable (releasing) action to avoid damage to the rotating system components.

ü Before using special plastics, you should consult the plastics business, what kind of injection screw is more suitable for this kind of plastics.

ü Use the correct plastic replacement and cleaning methods provided by the plastics manufacturer.

ü Periodically check each part of the injection table, tighten the loose parts, and ensure that the two injection cylinders are installed in a balanced manner, so as to avoid damage to the oil seal of the injection cylinder, resulting in oil leakage and wear of the cylinder pump core.

ü Regularly drain the grease of the beer bell combination of the hydraulic motor and replace it with new grease.

ü When the melt temperature is normal and the melt black spots or discoloration constantly appear, check whether the glue ring and glue meson of the injection screw are damaged.

For more information about maintenance of injection molding machine,please do not hesitate to contact us!

1. Different working principles

Pasteurization method: Pasteurization is to heat the mixed raw materials to 68-70℃, and keep this temperature for 30min and then rapidly cool to 4-5℃.

Ultra-high temperature sterilization: a sterilization process in which the heating temperature is set to 135-150°C, the heating time is 2-8s, and the heated product meets the commercial sterility requirements.

2. The storage time is different

Pasteurization method: After pasteurization, a small part of harmless or beneficial, relatively heat-resistant bacteria or bacterial spores are still retained, so pasteurized milk should be stored at a temperature of about 4 °C, and can only be stored for 3 ~10 days, up to 16 days.

Ultra-high temperature sterilization: After ultra-high temperature instantaneous sterilization, the product is packaged in a sterile environment, which can effectively control the total amount of microorganisms in the product, greatly prolong the shelf life of the food. And because the sterilization duration is very short, it can be maximize product nutrition and flavor preservation.

3. Use different equipment

Pasteurization: Pasteurization uses a pasteurizer.

Ultra-high temperature sterilization: The equipment used for ultra-high temperature sterilization is steam or heat exchanger.

Heating method for ultra-high temperature pasteurization

The heating equipment for ultra-high temperature pasteurization mainly includes plate heat exchanger and tubular heat exchanger.

The plate heat exchanger is a heat exchanger formed by pressing thin metal plates into heat exchange plates with a certain corrugated shape, then stacking them, and tightening them with plywood and bolts. Thin rectangular channels are formed between the various plates, and heat is exchanged through the half plates. The working fluid flows through the narrow and tortuous channel formed between the two plates. The hot and cold fluids pass through the flow channel in turn, and there is an interlayer plate in the middle to separate the fluids, and heat exchange is carried out through this plate.

The structure and heat exchange principle of the plate heat exchanger determine that it has the characteristics of compact structure, small footprint, high heat transfer efficiency, large operation flexibility, wide application range, small heat loss, and convenient installation and cleaning.

Plate heat exchanger is a new type of high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between the various plates, and heat is exchanged through the plates. Plate heat exchanger is an ideal equipment for liquid-liquid and liquid-vapor heat exchange. It has the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint, convenient installation and cleaning, wide application and long service life. Under the same pressure loss, the heat transfer coefficient is 3-5 times higher than that of the tubular heat exchanger, the floor area is one third of that of the tubular heat exchanger, and the heat recovery rate can be as high as 90% or more.

Tubular heat exchangers are also known as shell and tube heat exchangers and tubular heat exchangers. The working principle of tubular heat exchangers is as follows:

1. The shell-and-tube heat exchanger is composed of multiple layers of materials with good thermal conductivity. The working principle is similar to that of a water heater.

2. The water heater generates heat from the combustion of gas, and the heat exchanger is the heating medium, not an open flame. There are two pipeline circuits inside the heat exchanger, one is the heat source and the other is the heated source heat source, just like the flame when the water heater burns hot water or steam etc.

3. The heated source is like the heated water in a water heater. There is also an internal regulating valve before the heat source inlet of the heat exchanger in the heat source loop, and the temperature of the heated source can be adjusted by changing the opening of the valve.

Partner with us for water treatment system

We Are a professional supplier of water treatment system, if you want to know more about the sterilization method, please feel free to contact us.

Let me give your a brief introduction of the types of filling machines.

Atmospheric pressure filling machine

It is filled by the weight of the liquid under atmospheric pressure. This type of filling machine is divided into two types: timed filling and constant volume filling. It is only suitable for filling low-viscosity and gas-free liquids such as milk, wine, etc.

Pressure filling machine

Filling is carried out at a pressure higher than atmospheric pressure, and can also be divided into two types: one is that the pressure in the liquid storage tank is equal to the pressure in the bottle, and the filling is performed by the liquid flowing into the bottle by its own weight. It is isobaric filling; the other is that the pressure in the liquid storage tank is higher than the pressure in the bottle, and the liquid flows into the bottle by the pressure difference. This method is mostly used in high-speed production lines.

Vacuum filling machine

Filling is carried out when the pressure in the bottle is lower than the atmospheric pressure. This kind of filling machine has simple structure, high efficiency, and can adapt to a wide range of viscosity of materials, such as oil, syrup, fruit wine, etc.

Oil filling machine

It can fill all kinds of oil products, such as edible oil, lubricating oil, peanut oil, soybean oil, etc. This type of filling machine is a filling machine specially developed for the filling of oil materials, which can realize flexible configuration of manual operation and unmanned operation.

Injection plug filling machine

This type of filling machine is suitable for food, daily chemical, oil and other special industries, and can fill various liquid and paste products, such as disinfectant, hand sanitizer, toothpaste, various cosmetics, etc.

Looking for a filling machine supplier

We are a leading enterprise in research and production of beverage filling and packing machines. We are not only a machine manufacturer, we can also supply turnkey project according to customers’ request, including workshop design, machine layout design, water, gas, electic cable layout design, label and bottle design. 

Our main products including: water treatment system, mineral water filling machine, labeling machine, packing machine, CSD production line, juice production line, 5 gallon water production line, PET bottle blowing machine, injection molding machine and so on.

Driven by the transmission machinery, all aspects can coordinate the division of labor and truly achieve the effect of linkage. There is a special infrared sensor on the bottle feeding track to receive the induction. When the bottle reaches a certain number, it will automatically jam the following bottle. No bottle, no filling, when the bottle enters the lower position of the filling head, other working sections stop, only the filling head works, when the bottle leaves, the filling head stops working, the track part works, and the bottle stopper is released. The clean bottles from the bottle washing machine are sent to the bottle feeding screw of the filling machine by the bottle conveying belt, and then sent to the bottle supporting cylinder of the rotary table through the bottle feeding star wheel and raised.

Under the guidance of the centering device, the bottle mouth tightly presses the feeding opening of the filling valve to form a seal. After the bottle is evacuated, the back pressure gas (CO,) in the liquid storage tank is flushed into the bottle. When the gas pressure in the bottle is equal to the gas pressure in the liquid storage tank, the liquid valve is opened under the action of the liquid valve spring. . At this time, the object is guided by the umbrella-shaped reflective ring on the return trachea. It is automatically poured into the glass bottle along the bottle wall, and the CO in the glass bottle is replaced by the return pipe to the liquid storage tank. When the object rises to a certain height and closes the mouth of the return trachea. Automatically stop dropping objects. Then close the liquid valve and the gas valve to discharge the pressure gas at the neck of the bottle to prevent the gas-bearing objects from spouting when the glass bottle falls, thus completing the entire filling process.

Looking for a filling machine supplier?

Guangzhou Prolifik Trading Co. Ltd. is located at the new port city-Zhangjiagang, it was founded at 2011 and started with beverage filling and packing machinery. We are a leading enterprise in research and production of beverage filling and packing machines. We are not only a machine manufacturer, we can also supply turnkey project according to customers’ request, including workshop design, machine layout design, water, gas, electic cable layout design, label and bottle design. Our mission is to ensure customers’ plant properly working and help customers win their market. If you have any inquiry, please do not hesitate to contact us!