HYDRAULIC / PNEUMATIC DRIVES
We offer various pneumatic and hydraulic solutions for the drive for the needle stroke in valve gate systems. Each solution has its strengths, depending on the available space and set priority.
NK DRIVE UNIT SCREWED TO THE MANIFOLD SYSTEM
The NK drive unit is screwed to the rear of the hot runner manifold. The unit can be operated pneumatically and hydraulically. The seal sets within the unit are similarly designed for both media. For example, pneumatics can be connected during the sampling by the machine manufacturer and later in the serial production of hydraulics. Due to the mounting on the hot runner manifold, the drive units are equipped with water cooling, which ensures the longevity of the drives.
The needle position can be adjusted externally using the clamping plate. A corresponding hold in the clamping plate as well as a possible heat insulation plate must be provided for this.
Especially in combination with DS nozzles it is thus possible to create completely pre-wired, screw-fitted systems which can be handled as a component.
NT DRIVE UNIT FOR USE IN THE CLAMPING PLATE
The NT drive unit is installed in the clamping plate and can optionally drive individual needles within the system or, combined with several NT units, drive a complete lifting plate.
The unit can be operated pneumatically and hydraulically. The seal sets within the unit are similarly designed for both media. For example, pneumatics can be connected during the sampling by the machine manufacturer and later in the serial production of hydraulics.
The needle position can be adjusted externally using the clamping plate.
The valve gates can be decoupled from the drive cylinders for maintenance work, making it possible to disassemble the clamping plate without previously disassembling the valve gates from the hot runner system.
The cylinders do not require their own cooling, however the clamping plate is provided with a temperature control circuit.
NH OPERATION USING A LIFTING PLATE (PNEUMATIC AND HYDRAULIC)
Particularly in the case of high-speed systems, operation by means of lifting plate has the advantage that only a few drive cylinders are required and thus a small installation space suffices. The lifting plate also ensures that all valve gate nozzles are opened and closed absolutely synchronously. The drive is operated by hydraulic / pneumatic cylinders mounted on the side of the tools, or with NT units in the clamping plate.
Continuous development and the passion to innovate is our incentive.
- Martin Hallenberger, Head of construction department
ONE INJECTION MOLDING TOOL, MANY REQUIREMENTS
Many requirements are often fulfilled by the drive. The distances between the drives must be narrow for implementing the position of the injection points, necessary sequential valve gate controls must be feasible, specifications of your customer regarding media selection, small installation spaces due to cooling and tool functions, etc.
Contact us and we will be happy to advise you on the appropriate drive type for your application.
