YIZUMI’s 8500-tonne injection machine heralds exciting technical breakthroughs


YIZUMI has unveiled its innovative product – the 8500-tonne ultra-large, high precision injection moulding machine, which is the largest injection moulding machine in China.

The machine has been hailed as one of YIZUMI’s major breakthroughs not only due to it being the largest machine ever installed in China in terms of tonnage, but also because if its ability to meet specific customer requirements.

The machine’s superb performance relies on its advanced technologies, such as precision control technology, two-shot units co-injection moulding technology and injection compression moulding technology.

Deputy Managing Director of YIZUMI Group & General Manager of Injection Moulding Machine Division, Zhang Tao said that the R&D of the 8500-tonne ultra-large, high precision injection moulding machine has become an industry benchmark for the development of other large-scale injection moulding machines.

“Our ultra-large injection moulding machine is also occupying the leading position among our counterparts worldwide,” added Zhang Tao.

Zhang Min, Deputy Head of Development – the Technology Department (Two-platen IMM), described the machine as being approximately 27 meters in length and requiring approximately 22.5 seconds to walk around its circumference. The overall height of the machine exceeds 6 meters, higher than a 2-story building, and covers 251 square meters. 

When it comes to the core components, a single platen weighs over 140 tonnes.

“It took about 30 technicians four months to assemble the whole machine,” adds Zhang Min.

“In the past, the core technology in super large injection moulding machines was mostly supplied by foreign enterprises. Now, the success of YIZUMI 8500-tonne injection moulding machine, of which the rated clamping force is 8500 tonnes, marks a significant breakthrough, setting a new record in China.”

The 8500-tonne ultra-large high precision injection moulding machine is a key product that YIZUMI built with significant diligence.

“Compared with counterparts at home and abroad, the most important innovation of this machine consists in its mould opening and closing repeatability of up to ±0.3mm, and two injection units with a maximum shot weight of 80kg, breaking the record of ultra-large injection moulding machine in China,” commented Zhang Min.

The machine can be used in one-step moulding of large-sized transparent plastic parts (or with metal inserts) with high requirement in part shape, light transmittance and accuracy, solving the moulding difficulties of large-sized transparent plastic parts.

Additionally, the machine incorporates cutting-edge technologies including injection compression moulding (ICM) technology, SmartClamp technology, internal circulation two-platen clamping unit and closed-loop pump technology specific for optical products.

The control system integrates smart control technology, information technology and IoT exclusively developed by YIZUMI. The machine is of high precision, high speed and intelligence, with energy saving of 30% compared to traditional three-platen machines.

The success of the first domestic 8500-tonne ultra-large high precision injection moulding machine is inextricably linked to the significant efforts of the YIZUMI R&D team. The machine is purpose designed to produce large-sized products especially suitable for the aerospace field, automobile industry, petrochemical pipelines and transportation facilities.

YIZUMI’s problem-solving team has also tackled a series of challenges in processing, transportation and assembly for ultra-large equipment, providing customers with more cost-effective integrated solutions for the manufacturing of ultra-large transparent plastic parts.

With the rapid development of aerospace and automobile industries, the demand for super-large injection moulding products is gradually increasing. YIZUMI will continually develop new products, technologies and processes to improve the integrated solution for super-large injection parts.

“Before, the maximum tonnage of YIZUMI injection moulding machine was 4500 tonnes. We plan to expand the tonnage range for all machine series, ranging from 4500 to 8500 tonnes,” said Zhang Tao.

“It took us two years from the initial discussions with customers to the final prototype. During the machine build, many parts were unavailable through our supply chain. As a result, our project team had to spend a lot of time exploring new supply routes.”

Currently, the prototype 8500-tonne ultra-large high precision injection moulding machine has been built on target and now awaits the final operation test to produce a customer’s mould. Zhang Tao said: 

“This machine can be regarded as a milestone for YIZUMI,” said Zhang Tao. 

“It is more than just being big. The machine also adopts new technologies including injection compression moulding technology and two-shot units co-injection moulding technology.” 

The successful development of this machine opens a window to the application of large plastic parts and provides a lot of new possibilities. It also plays a leading role in the development of large injection moulding machines across the industry.


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