Manipulator for the Plastics and Injection-Molding Industry
- Zeilhofer HHT
- Jun 30
- 3 min read
Large injection-molded parts, tools, molds and filled mesh boxes shape everyday work in plastics processing. Much of it is heavy, hot or sensitive. Anyone changing tools or removing components here needs a lifting aid that guides precisely and relieves the worker. This article shows where a manipulator in injection molding plays to its strengths.
A manipulator for injection molding is therefore designed for three tasks: changing heavy tools, removing large molded parts and handling material safely.
Manipulator in injection molding: typical handling tasks
In plastics and injection-molding production, three task areas mainly arise: changing heavy injection-molding tools, removing and passing on large molded parts, and handling material containers and rolls. All three have in common that manual force quickly reaches its limits and precision is required.
There is also the time factor: especially during tool changes, every minute of downtime counts. A sway-free lifting aid shortens the setup time and makes the change safely reproducible.
Tool change at the injection-molding machine
Injection-molding tools are compact but very heavy. A manipulator or a lift axis positions the tool sway-free and with millimeter precision in front of the machine, which shortens setup times and reduces the risk of injury. How a floating tool change works is shown in the article floating tool change at large machining centers.
Removal and handling of large molded parts
Large-volume injection-molded parts, such as bumpers, housings or containers, are bulky and partly surface-sensitive. An articulated manipulator with an adapted gripper or vacuum attachment removes them gently and guides them for further processing. How a manipulator for bumpers is designed is shown in the article Manipulator for car bumpers.
For sensitive, smooth surfaces, the vacuum attachment is suitable, because it holds the load gently and over a large area without leaving pressure marks.
Material, rolls and containers
Raw material also has to be moved: film and material rolls, sacks or filled containers. For cylindrical loads, a roll lifter is suitable, for containers and drums the appropriate manipulator. An overview of all systems is given in the guide to lifting aids.
Typical tasks in this area are:
Lifting and emptying granulate containers and sacks ergonomically.
Picking up and mounting film and material rolls sway-free.
Moving and tilting filled mesh boxes with finished parts.
Benefit for production and employees
A manipulator in injection molding reduces physical strain, speeds up tool changes and protects sensitive component surfaces. This lowers lost workdays and increases productivity. Background is provided by the article Musculoskeletal disorders in production. Zeilhofer Handhabungstechnik designs every solution individually, is certified to ISO 9001 and works in accordance with TISAX Level 2 with prototype protection.
Frequently asked questions
How do you change heavy injection-molding tools safely?
A manipulator or a lift axis guides the tool sway-free and with millimeter precision in front of the machine. This shortens the setup time and reduces the risk of injury during the tool change.
How do you remove large injection-molded parts gently?
With an articulated manipulator and an adapted gripper or vacuum attachment, large-volume molded parts are removed damage-free and guided onward precisely.
Are the solutions also suitable for material rolls?
Yes. For cylindrical loads such as film and material rolls, a roll lifter with a suitable attachment is suitable, for example mandrel, expanding mandrel or vacuum gripper.
How heavy may the tools be?
Depending on the system, loads up to 1,200 kg can be handled. The ZH90 lift axis lifts up to 1,200 kg, the manipulator up to 800 kg, each sway-free and precise.
Your application in injection molding?
Do you change tools or handle large molded parts in plastics production? Our engineers are happy to advise you and design your solution individually, Made in Germany, from a single source.
For more depth on individual topics, see our guides on handling technology.
