Preface
Against the backdrop of consumption upgrading and intensifying brand competition, glass packaging is rapidly evolving toward small-batch, multi-variety and high-quality production.
For glass manufacturers, the core challenge is no longer merely producing glass bottles, but achieving rapid product changeover, stable operation and sustained cost reduction while guaranteeing product quality.
Chuda Intelligent H8S and H9S rotary bottle forming machines are developed to meet such industrial demands. Featuring the world’s pioneering parallel multi-mold rotary production process independently researched and developed, alongside an intelligent control system based on EtherCAT industrial bus, they deliver innovative solutions for glass container manufacturing via intelligent, flexible and digital technologies, and have become mainstream bottle-forming equipment in the sector.
Chuda Intelligent Rotary Bottle Forming Machine
This rotary bottle machine adopts a forming process of one blank mold matching multiple blow molds: the H8S model is equipped with 4 blow molds, while the H9S model comes with 2 blow molds. The H9S integrates a synchronous blow head mechanism that rotates together with blow molds to perform continuous blowing, further shortening molding cycle and boosting productivity.
The multi-blow-mold structure extends the shaping and cooling duration of glassware inside molds, improving product quality and expanding the production range. It boasts irreplaceable advantages for thick-bottom bottles and cosmetic containers.
Chuda Intelligent H9S Rotary Bottle Forming Machine
The modular multi-blow-mold design of Chuda’s rotary bottle machine enriches its product portfolio and fulfills customers’ diverse production requirements in a highly cost-effective manner.
Parallel Multi-Blow-Mold Rotary Production Process
Taking the Chuda H9S rotary bottle machine as an example, each forming unit is fitted with two blow molds (Blow Mold 1 & Blow Mold 2) on the blow side. The equipment integrates dual synchronous blow assemblies, which rotate synchronously with the turntable and sustain continuous blowing during mold rotation.
Core technical workflow:
- Precise Gob Delivery: After glass gobs are pre-shaped into parisons in blank molds, a high-precision servo turnover mechanism accurately transfers parisons to the closing Blow Mold 1.
- Synchronous Rotation & Blowing: Once Blow Mold 1 closes, the servo turntable rotates 180° to move Blow Mold 1 away from the feeding station. Meanwhile, the No.1 blow head activates and blows steadily throughout rotation to shape parisons into finished bottles.
- Alternating Seamless Operation: When Blow Mold 2 rotates to the feeding station to receive the next parison, the No.2 blow head starts blowing synchronously. The two sets work in alternating cycles to realize non-stop continuous production.
- Intelligent Bottle Gripping & Conveying: At the gripping station, finished glass bottles are gently clamped by servo grippers and placed on dead plates for uniform cooling, then accurately transported to mesh belts via electronic bottle pushers.
Chuda Intelligent innovates a parallel processing architecture. The synchronous multi-blow-mold blowing system enables seamless coordination between shaping and blowing procedures for highly efficient cyclic production.
Technical Breakthroughs of Rotary Bottle Forming Machines
Combining strengths of traditional large rotary bottle machines and IS machines, this equipment integrates new crafts and technologies to build a unique technical framework.
- Parallel Independent Unit Design: Each production unit operates independently without mutual interference, enabling fault isolation and rapid maintenance.
- One Blank Mold for Multiple Blow Molds: This process optimizes time allocation between blanking and blowing, supporting a wide range of glass products including high-end bottles, condiment containers and wine bottles.
- Servo Gob Distribution: Driven by servo motors and synchronized toothed belts, the scoop rotates intermittently to distribute glass gobs to each unit in order.
- Servo Turnover: Servo-driven parison turnover to blow mold stations; acceleration & deceleration parameters adjustable for flexible handling and improved parison integrity.
- Servo Turntable: Servo-controlled rotational indexing delivers high-precision repeated positioning for multi blow molds, with digitalized adjustable motion parameters.
- Servo Bottle Gripping: Servo-driven gripper arms rotate 180° back and forth to transfer finished bottles from blow molds to front cooling dead plates.
- Dual Synchronous Blowing: Blow heads rotate in lockstep with turntables to maintain continuous blowing during mold movement. Compared with traditional IS machines, it extends glass forming time per cycle, effectively eliminating defects such as neck tilt, deformation, ovality and verticality deviation, and raising product yield.
- Energy Saving & Eco-Friendly: The multi-blow-mold design shortens forced air cooling time and cuts air consumption. Digital bottom air intake for blank & blow molds precisely regulates airflow to reduce waste. Servo actuators replace most pneumatic components, slashing compressed air usage.
- Integrated Variable-Weight Servo Feeder: Matched with variable-weight servo feeders, the machine supports mixed-line production of up to 9 bottle models. It perfectly fits small & medium batch orders and greatly enhances flexible manufacturing capacity.
Thanks to its exclusive technical features, the rotary bottle machine is ideal for high-end glassware, cosmetic bottles, special-shaped containers and other high-quality-demanding products, as well as lightweight thin-walled daily bottles.
Flexible Production Normalizes Multi-Variety Manufacturing
For surging small-batch customized orders, production competitiveness relies not only on speed but also rapid format switching capability.
Chuda Intelligent rotary bottle forming machines support fast mold changeover and multi-specification production, cutting downtime for adjustment and lifting equipment utilization. For clients in food & beverage, pharmaceutical packaging and cosmetics who frequently update products, this enables faster market response and shorter order lead times.
References：
Weng Jianzhong, Industry Expert of China Packaging Federation & China Daily Glass Association. Development History and Future Technical Innovation Outlook of Rotary Bottle Forming Machines.