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Home / Topstar Sprue Picker: Features a telescopic arm design to resolve vertical stroke limitations

Topstar Sprue Picker: Features a telescopic arm design to resolve vertical stroke limitations

2026/03/23 By le zhan

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When a sprue picker lacks sufficient vertical stroke, it often leads to unstable part extraction, inconsistent part release, and production cycle delays. Topstar’s sprue pickers feature two distinct designs: single-stage and telescopic. Manufacturers can select the appropriate model based on mold height, machine dimensions, and the specific distance required for safe part extraction. The telescopic models offer a vertical stroke of 750 mm; they are equipped with shock-absorbing buffers throughout their full range of motion and feature an adjustable telescopic mechanism to accommodate varying working distances, making them suitable for 80-100 ton injection molding machines.

Types of Topstar Sprue Picker: Single-Stage vs. Telescopic

Topstar offers two primary types of sprue pickers: single-stage and telescopic. The single-stage design suits standard applications—specifically scenarios where the vertical travel range is relatively limited. For simple sprue-removal tasks, this design delivers stable, highly cost-effective performance. In contrast, engineers design the telescopic sprue picker robot specifically for applications that demand greater flexibility and a more extensive vertical reach. Thanks to their adjustable robotic arm mechanisms, these units can adapt to varying mold heights and working distances. This versatility enables manufacturers to address a broader range of production scenarios with a single automated solution. Furthermore, the flexibility of these sprue pickers helps accelerate mold changeovers, minimize downtime, and enhance overall equipment utilization.

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Design, Advantages, and Applications of Telescopic Sprue Picker

The most distinctive feature of Topstar’s sprue picker robots is their telescopic arm design, which provides a vertical stroke of up to 750 mm. This extended operational range allows the robot to effortlessly handle molds with large opening distances or complex geometric structures. Unlike fixed-stroke systems, the telescopic mechanism offers an adjustable extension range, enabling the robot to adapt to a wide range of working distances easily.

Consequently, this design not only enhances operational flexibility but also allows operators to flexibly deploy the robot across different injection molding machines and production lines. For users, this translates to fewer equipment constraints during production and greater freedom in system configuration. Moreover, the telescopic structure strikes a perfect balance between a compact physical footprint and an expansive range of motion.

Shock Absorption and Buffering Technology Ensure Smooth Motion and High Precision

To fully leverage the advantages of their extended stroke range, engineers equip Topstar sprue picker robots with shock-absorption and buffering mechanisms throughout their entire range of motion. This feature ensures smooth, fluid acceleration and deceleration, effectively mitigating mechanical shock and significantly enhancing positioning accuracy. Since the injection molding process demands precise motion control—to prevent even minute deviations from compromising product quality or damaging the mold—engineers design the sprue picker robot’s shock absorption technology to suppress vibrations to the greatest extent possible. This ensures equipment stability, allowing the robots to maintain consistently exceptional performance even during high-speed operation. Furthermore, reducing mechanical stress extends the equipment’s service life and minimizes maintenance requirements.

Suitable for 80–100 Ton Injection Molding Machines

Topstar sprue picker robots are ideally suited for injection molding machines ranging from 80 to 100 tons. These machines typically produce medium-sized parts; consequently, the accompanying picker robot must be compact, fast, and reliable. Telescopic models suit this application particularly well, as they provide an extended stroke range without increasing the overall footprint. This helps maintain ample operational space around the injection molding machine and keeps the production cell organized and orderly. With smaller-tonnage injection molding machines, layout constraints are often more stringent, necessitating a careful balance between equipment dimensions and operational range. Topstar sprue pickers efficiently remove sprues without occupying excessive space. This design ensures that manufacturers can achieve high productivity without compromising layout efficiency or operational convenience. A sprue picker that operates smoothly, offers precise repeatability, and efficiently clears the mold helps minimize waiting times and enables the injection molding machine to maintain its optimal operational rhythm.

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Integration with Auxiliary Equipment

A sprue picker does not operate in isolation; rather, it functions as an integral component of the broader injection molding system. Topstar sprue pickers can seamlessly integrate with other equipment within the injection molding workflow, enabling the entire production line to operate efficiently as a cohesive, coordinated unit.

A practical example of this capability is its compatibility with auxiliary equipment, such as compact, 3-in-1 dehumidifying dryers with dual hoppers. In a production cell where material drying, part extraction, and mold cycling occur simultaneously, the coordinated operation of all equipment is absolutely critical. If the dryer prepares material for the next batch while the sprue picker removes the sprue from the current cycle, the production line can operate more efficiently. This integration minimizes downtime and helps the injection molding machine maintain high-efficiency operation. Thanks to its telescopic arm, which adapts to varying working distances, the system can seamlessly integrate into a wider range of production line layouts. This facilitates the optimal placement of conveyors, material bins, dryers, and other auxiliary equipment, ensuring maximum efficiency.

Achieving Precise Motion for Enhanced Flexibility

Topstar’s sprue picker addresses a highly practical challenge in injection molding: limited vertical travel that can compromise production efficiency and increase mold operation complexity. The product line offers two options—single-stage and telescopic—with the telescopic model featuring a vertical stroke of up to 750 mm. This telescopic distance is adjustable to accommodate varying spatial requirements, and the unit is equipped with a full-stroke cushioning mechanism to ensure precise motion, thereby providing manufacturers with the flexibility they require.

 

 

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