Before we can understand why Injection Molding Machine Tonnage is important, we must first know Injection moulding machine Tonnage meaning clamping force is the maximum clamping force that can be exerted on the mould by the clamping mechanism of the injection moulding machine.Which is designed to resist the expansion force generated when the molten rubber fills the mould at a higher injection pressure.
Many customers who are interested in plastic injection moulding industry may have the same question: how to calculate the tonnage of injection moulding machine or how to calculate the injection clamping force?
Injection Molding Machine Tonnage is an indication of clamping force.It is very important and directly affects the clamping force of the mould and the quality of the final product.
The impact of injection moulding tonnage on industrial production
There are four main key reasons for this:
- Injection Molding Machine Tonnage toMould Closing Force
- Product quality
- Production efficiency
- Mould life
Injection Molding Machine Tonnage to Mould Closing Force:
During the injection molding process, the mould must remain closed during the injection and cooling phases.
Tonnage is the clamping force applied to the mould by the machine. This force must be high enough to prevent the mould from opening under high pressure.
If the tonnage is insufficient, the mould may open during the injection process, resulting in defects or product damage.
Product quality:
Proper tonnage ensures that the mould is uniformly pressurised during the injection process, resulting in a high quality product.
Insufficient tonnage may lead to product defects such as shrink marks, warping or flying edges, while excessive tonnage may lead to mould wear, excessive compression of the material and increased production costs.
Productivity:
Choosing the right tonnage helps to optimise the production process, reduce cycle times and increase productivity.
Using too much tonnage will not only increase energy consumption, but also prolong cycle times and increase production costs.
Mould life:
Inappropriate injection molding tonnage will cause unnecessary wear and tear on the mould and shorten its life.
For example, too high tonnage will lead to early wear of the parting line of the mould and may even lead to mould damage.
Therefore, choosing the right tonnage is critical to ensuring the success of the injection molding process and improving product quality and productivity.
Manufacturers need to accurately calculate the tonnage required based on part size, material properties, mould design and other factors.
How injection molding machine tonnage affects clamping force ？
The tonnage of an injection molding machine directly affects its clamping force.
The tonnage of an injection molding machine is the size of its clamping force, i.e. how many grams of product it can produce.
Insufficient clamping forceis the maximum clamping force applied to the mould by the injection molding machine, which is used to overcome the opening force of the mould by the melt in the cavity.
Therefore, the greater the tonnage of the injection moulding machine, the greater the clamping force and the greater the size and weight of the product that can be processed.
Specifically, the formula for clamping force is:
Clamping force = average pressure per unit area of formed space × projected area of formed space × coefficient.
Therefore, the larger the tonnage of the injection molding machine, the larger the maximum clamping force it can withstand, so that larger and heavier plastic products can be processed.
In addition, when selecting the appropriate tonnage of the injection molding machine, you need to ensure that it is greater than the required calculation and that the mould size matches the tonnage of the injection moulding machine.
Insufficient clamping force may result in the mould parting surfaces not closing tightly, thus affecting the molding quality.
Therefore, the tonnage of an injection molding machine determines its processing capability and productivity to a certain extent.
The relationship between injection molding machine tonnage and product quality
There is a close relationship between the tonnage of an injection molding machine and the quality of the product.
The tonnage of the injection molding machine, i.e. the maximum iniection molding clamp tonnage, is an important parameter to measure its performance and capability.
It directly affects the clamping force of the mould and the quality of the moulded products.
The relationship between them is mainly reflected in the following four aspects:
- Clamping force and mould stability
- Product size and weight
- Production efficiency and cost
- Material properties and mould design
Clamping force and mould stability:
The large tonnage plastic injection molding of the injection molding machine, the larger the clamping force it provides, which can better maintain the stability of the mould during the injection process, thus reducing product quality problems caused by mould deformation.
For example, for large or complex moulds, a larger tonnage injection moulding machine is required to ensure moulding accuracy.
Product size and weight:
The tonnage of the injection molding machine determines the maximum size and weight that the machine can produce.
For example, a 100 tonne injection molding machine can usually handle products of 50-80 grams, while a 300 tonne injection moulding machine can handle products of 300-500 grams.
Therefore, choosing the right tonnage is crucial to ensuring product quality. Too small a tonnage may result in the product not moulding properly, while too large a tonnage may result in a waste of resources.
Injection Molding Machine Tonnage Productivity and cost:
Large tonnage injection molding machines usually have higher productivity and stability and are suitable for mass production. However, large tonnage machines consume more power, so will need to consider energy consumption and costs when using them.
Material properties and mould design:
Different materials with different viscosities and molding requirements may require different tonnages of injection molding machines.
High viscosity materials or complex moulds may require larger tonnage machines to ensure moulding quality.
In summary, choosing the right tonnage of injection molding machine is a key factor to ensure product quality, improve production efficiency and control costs.
Enterprises should choose the right tonnage of injection moulding machine according to the specific product size, material, structure and production scale and other factors.
Productivity of different injection molding machine tonnages
There are significant differences in productivity between injection molding machines of different tonnages.
Embodied in the energy consumption, precision, speed and scope of application, etc. We take the classification of the industry to make the following introduction:
- Ultra-large injection molding machines (e.g. above 2000 tonnes)
- Large-scale kiloton injection molding machines
- Medium-sized injection molding machines (e.g. 230 tonnes)
- Small injection molding machines (e.g. 110 tonnes)
Ultra-large injection molding machine Tonnage(e.g. over 2000 tonnes)
Ultra-large injection molding machines usually adopt servo control systems, featuring low energy consumption and high efficiency.
However, due to the complexity of their mechanical structure, the manufacturing cost is high, and there are some problems in terms of long molding cycle and high energy consumption.
These machines are suitable for the production of large engineering plastic parts and are widely using in aerospace, automotive manufacturing and other fields.
Large kiloton injection molding machine:
Large kiloton injection molding machines achieve fast response and stable pressure and flow control through a multi-point response servo-drive method and a highly efficient plasticising injection unit, thus improving productivity.
These machines are capable of molding large engineering plastic parts with complex shapes and precise dimensions in a single run, and are suitable for use in areas such as transport, building materials and packaging.
Medium-sized injection molding machines Tonnage(e.g. 230 tonnes):
Medium-sized injection molding machines usually adopt accumulator speed-up technology, which can increase the injection rate, thus improving production efficiency and product quality.
These machines are suitable for small and medium batch production and can meet a wide range of plastics processing needs.
Small injection molding machines Tonnage (e.g. 110 tonnes):
Small injection molding machines are relatively low in productivity, but are easy to operate and are suitable for small batches and complex moulds.
These machines are commonly using in produce small plastic products, such as electronic parts, small home appliances and so on.
The difference in production efficiency between injection molding machines of different tonnages is mainly reflected in their design principle, mechanical structure, control system and scope of application.
Ultra-large and large injection molding machines have obvious advantages in terms of production efficiency and energy consumption, and are suitable for mass production and high-precision requirements.
Medium-sized and small injection moulding machines, on the other hand, have more advantages in flexibility and applicability, and are suitable for the production of small and medium batches and complex moulds.
Haichen’s injection moulding machines of different tonnage applications
Haichen has developed injection molding machines with different tonnages to meet various production needs.
For example, the HCK 1500-tonne injection molding machine is mainly for the production of automotive lamps.
With a highly efficient hydraulic servo system and 1500-tonne injection molding tonnage.
Which can meet the requirements of high-precision and high-stability production.
In addition, the HCS4000 ultra-large composite intelligent injection molding machine has a clamping force of up to 4,000 tonnes.
Which is suitable for the production of ultra-large composite materials, with energy-saving and remote monitoring functions.
For SMEs or specific applications, Haichen has launched a range of oil-electric hybrid injection molding machines with clamping forces ranging from 60 to 200 tonnes for entry-level users.
There is the HCK500t developing for the production of common packaging industry products such as crates.
From a technical point of view, injection moulding machines of different tonnages differ in design and function.
Haichen’s newly developed two-platen injection molding machine has the advantages of small footprint and easy maintenance compared to the traditional three-platen injection molding machine, and is suitable for industries requiring high precision and rapid moulding.
Haichen’s different tonnage injection moulding machines, through their diverse design and technical features, can provide small businesses to large manufacturing enterprises.
From ordinary plastic products to high-precision, high-load industrial applications, to provide the right injection molding machine models to meet their production needs.
