Bottle Blowing Machine Mold Components: Bottle Clamps

Wear on the hinge pins causes the gripper to close off-center, directly leaving tangential indentations on the bottle body during high-speed rotation, ruining the Class A surface appearance standards for cosmetic or beverage packaging.

The core of eliminating this Class A defect lies in the precise control of the oscillating fatigue life of the hinge pair. Under the alternating shear stress of thousands of opening and closing cycles per minute, direct metal-to-metal friction easily leads to backlash enlargement. We solve this by precisely press-fitting a graphite-impregnated brass self-lubricating bushing into the pin hole, strictly locking the fit clearance between the bore and the pin at 0.01-0.02mm. Simultaneously, a 20-30μm thick hard chrome plating is applied to the exposed hinge surfaces, achieving a microhardness exceeding HV900. This not only isolates oxidative erosion from moisture and grease but also disperses the microscopic stress concentrations caused by high-frequency oscillation through a highly rigid surface. This dual physical barrier ensures the gripper maintains absolute kinematic centering accuracy even after millions of cycles, cutting off the root cause of tangential bite marks.

Can be directly replaced as molds and accessories on Sidel, Krones, KHS, and Tetra Pak blow molding, filling, and labeling equipment.

In terms of spare parts delivery status, all hinge bushings are pre-finished with interference fit press-fitting and precision reaming before leaving the factory. This completely eliminates the cumbersome on-site maintenance steps of disassembly, drilling, and manual reaming. They can be assembled right out of the box to restore original centering, reducing the Mean Time To Repair (MTTR) for a single gripper set by over 80%. If you want to learn more about this product, please feel free to contact us for more information.

Sidel®,Tetra Pak®, Krones®, and KHS® are registered trademarks of their respective owners. Jihengfeng Precision Machinery (Shanghai) Co., Ltd. is an independent manufacturer and is not affiliated with, authorized, or endorsed by these companies.