Plastic Stacking Container Mould

 

Mould name	Plastic Stacking container mould
Product material	HDPE or PP
Product Size	600x400x223 mm
Mould material for cavity &. Core	P20/718H/2738
NOs of cavity	1 cavity
Injection system	Hot runner
Suitable injection machine	650T
Mould size	1050X880X750mm
Mould weight	3850KG
Mould lifetime	more than 500,000pcs
Delivery Time	45 days

 

 

The price of a plastic stacking container mould varies according to the complexity of the mold and design requirements. Simple moulds may start from thousands of yuan, and complex moulds may be as high as hundreds of thousands or even millions ‌.

The cost of manufacturing the mold includes the cost of the steel (covering the body, inserts, sliders, etc.), the 3D design service (charging by the hour, the time is based on the actual work), and the machine programming fee (also based on the hourly billing and working hours). The exact amount will vary depending on the complexity of the mold and the design requirements. For example, some simple container molds may be thousands of yuan to start, while the price of some complex, high-precision or large molds may be very high, reaching hundreds of thousands or even millions ‌12.

In addition, there are some relatively low price mould supplies on the market, but the quality and suitability may vary from supplier to supplier. Therefore, when choosing the mold, in addition to considering the price factor, we also need to pay attention to the quality, accuracy and applicability of the mould.

 

 

Here's an overview of how plastic container moulds are manufactured:

1.Design Phase

The first step is to design the mould. Engineers use computer - aided design (CAD) software to create a 3D model of the plastic crate and its mould. They consider factors like the crate's dimensions, shape, wall thickness, and any special features such as handles, grooves, or compartments. The CAD model allows for precise design and the ability to make modifications easily.

2.Material Selection

High - quality steel is a common choice for making moulds due to its durability and ability to withstand high - pressure injection moulding processes. Tool steels, such as P20 steel, are often used. The steel needs to have good heat - treating characteristics to ensure the mould can withstand repeated cycles of heating and cooling during the injection moulding process.

3.Machining

Milling: Computer - numerical - control (CNC) milling machines are used to cut the steel into the approximate shape of the mould. The milling process removes excess material to create the basic geometry of the mould cavities and cores. Milling tools with different shapes and sizes are used to achieve the desired surface finish and precision.

Drilling and Boring: Holes are drilled into the mould for features like ejector pins, cooling channels, and alignment pins. Boring is used to enlarge and refine holes to precise diameters. These holes play a crucial role in the proper functioning of the mould during the injection moulding process.

Grinding and Polishing: After the basic shape is achieved through milling, grinding and polishing operations are carried out to obtain a smooth surface finish. A smooth surface is essential for the quality of the plastic packing container, as it helps in easy ejection of the part and provides a better - looking finished product.

4.Heat Treatment

The mould is then heat - treated to improve its hardness and wear resistance. The exact heat - treatment process depends on the type of steel used. For example, quenching and tempering processes are often applied to increase the hardness of the steel while reducing its brittleness. This step helps the mould to withstand the high - pressure forces and abrasive nature of the plastic material during injection moulding.

5.Assembly and Finishing

Ejector System Installation: Ejector pins, sleeves, and other components of the ejector system are assembled into the mould. The ejector system is crucial for removing the plastic crate from the mould after it has solidified.

Cooling Channel Installation: Cooling channels are installed to control the temperature of the mould during the injection moulding process. These channels allow for the circulation of a coolant, usually water, to cool the mould quickly and evenly, which helps in reducing cycle times and improving the quality of the plastic crate.

Surface Treatment: The mould may undergo additional surface treatments such as coating with a release agent or a hard - coating material to further enhance its performance and durability. The release agent helps in easy separation of the plastic crate from the mould, while the hard - coating can protect the mould surface from wear and corrosion.

 

 

In order to ensure a long life running of our stacking container mould, we usually do for it from two aspects.
From the mould steel, we always use P20H steel for mould core&cavity part and #45 steel for mould base, sometimes 718 mould steel is also used.
For mould structure, we executing mould flow analysis to help optimize the design of the crate mould for manufacturing. Our engineer team focus on the improvement of crate mold structure to make it more advanced in mold life.

We have play an important role in China crate or container Mould manufacturers and plastic container Mould factory. Quote and get your project solution. Custom Bottle container mould, Fruit crate mould, Beer container mould, Thin wall crate mould, Foldable container mould can be easy.

 

 

 

 

In the selection of plastic Container mould processing steel material, 718H steel because of its high strength, high hardness and excellent wear resistance and corrosion resistance, especially suitable for large, complex mould manufacturing, and relatively high cost performance, especially Liaoning special steel products, the performance is better than domestic P20, cost effectiveness is better ‌1. P20 series steels, such as P20 and P20H, are suitable for the production of moulds of medium-sized plastic products due to their good processability and wear resistance, and are also widely used in the manufacturing of plastic moulds ‌.

In addition, for custom turnover containers of specific specifications structure or small batch production stacking containers, materials such as 40CR or tempered 40# steel may also be selected, but the use of these materials is relatively less. ‌

 

 

Mould Steel

Hot Runner System

 

Standard Parts

 

The benefits of using hot runner for plastic container or crate mould mainly include improving production efficiency, reducing production costs, improving product quality and simplifying operation process ‌.

‌Improve production efficiency ‌ :

The hot runner system enables rapid heating and cooling, greatly shortening the injection cycle and thus improving production efficiency. In addition, the hot runner system maintains a constant melt temperature, helping to reduce production delays caused by temperature fluctuations.

1.‌Reduce production cost ‌ :

The hot runner system can significantly reduce material waste in the mould manufacturing process because the hot runner system enables the recycling of melt and reduces the waste generated during the injection molding process. At the same time, the hot runner also helps to reduce mould wear and prolong the life of the mold, thereby reducing mold maintenance costs and downtime caused by mould damage ‌.

2.‌Improve product quality ‌ :

Hot runner technology can make plastic materials flow and fill more evenly in the injection molding process, avoid defects and deformation caused by uneven temperature, and improve the quality of injection molding. In addition, the hot runner provides more uniform temperature control, reduces gate marks and internal stresses, and improves product consistency and appearance quality ‌.

3.‌Simplify the operation process ‌ :

The mould using the hot runner can be directly pushed out after the part is formed, there is no need to wait for the runner to cool, and there is no need to trim the gate and other procedures, which is conducive to production automation and simplifies the operation process ‌.

In summary, the use of hot runner in plastic container moulds can bring many benefits, including improving production efficiency, reducing production costs, improving product quality and simplifying operation processes.

 

 

 

 

Injection mold daily maintenance mainly includes the following aspects:

‌The daily maintenance of injection molds involves cleaning, lubrication, inspection and anti-rust treatment. ‌

‌1.Cleaning and maintenance:

After the end of daily production, the mold surface shall be thoroughly cleaned to remove residual plastics, oil and impurities, so as to prevent these substances from corroding the mold surface or affecting the accuracy of the next injection ‌.

Use special mold cleaner and soft cloth to clean the mold surface and parting surface. Avoid scratching the mold surface ‌ with hard tools.

2.‌ Lubrication and maintenance:

Lubricate the sliding parts of the mold, such as guide post, guide sleeve, slide block, etc., to reduce wear and friction, and keep the mold opening and closing action flexible and reliable ‌.

Choose the most suitable lubricant, and regularly check the thimble, guide post, etc. for deformation and surface damage, once found to replace ‌.

3.‌ Inspection and maintenance

Regularly check whether all parts of the mold are in good condition, such as guide column, guide sleeve, reset rod, etc., to ensure that the clearance is reasonable and there is no damage ‌.

Check that the heating and cooling system of the mold is working properly and ensure that the mold temperature is stable ‌.

Monitor the pressure curve and speed curve during the injection molding process to ensure that it changes smoothly to avoid impact and wear on the mold ‌.

‌4.Rust prevention:

Anti-rust treatment of the mold, such as applying anti-rust oil, etc., to prevent rust and corrosion of the mold ‌.

After cleaning the mold, anti-rust agent should be applied in time and evenly on the surface of the mold and moving parts, and then stored in a dry and ventilated place ‌.

To sum up, the daily maintenance of injection molds is a comprehensive work, involving cleaning, lubrication, inspection and anti-rust treatment and other aspects, these maintenance measures can ensure the normal operation of the mold and extend the service life.