Desma delivers new specially developed machine for large gasket production

Fridingen, Germany – DESMA has recently delivered a newly developed special machine for the production of large gaskets to an international customer. The DESMA 968.500 ZOZO TWIN (S3) offers a new flexibility for future requirements or a very universal applicability. A very dynamic development can be observed in the field of battery gaskets in particular, meaning that there is less and less demand for special machines tailored to a specific product in order to minimize the risk of a product change.

DESMA has been very well positioned for many years with special machines for the large seal sector and now, with the new 968.500 ZOZO TWIN, has a machine platform in its program that covers the clamping force range from 5000kN – 7000kN.

The completely redesigned clamping unit with two fixed, large-dimensioned, fully hydraulic clamping cylinders ensures enormous deflection resistance and therefore the best injection results.
This machine platform can be designed with one or two FIFO-B injection units. Optionally, both lift-off injection units can be moved to different positions on a sliding system. In the current case, it is possible to switch from decentralized double injection to central injection within a few minutes. The conversion from solid silicone with tamping device to rubber can also be carried out in a very short time.
This machine is available with different injection volumes and can also be equipped with FIFO-A or FIFO-B high-pressure injection units with up to 3500 bar injection pressure if required.

A walk-on platform is provided for material provision, on which material pallets can be positioned close to the infeed. Depending on the type of material, actively driven belt infeed devices can also be added.
The walk-on platform also offers the option of positioning additional vacuum tanks, vacuum pumps and temperature control units for easy access.
An integrated mold plate shifting device enables article demolding or insert placement in the outer station by means of two mold base plates or mold center plates, while the next injection cycle is already being completed inside the machine. The heating plates inside the mold carrier and in the outer station are designed with 6 control zones in order to achieve the best possible temperature homogeneity. This machine is available with different heating plate dimensions. When used with a mold plate shifting device, a usable heating plate size of up to 1,600 x 1,100 mm is available in a wide arrangement.

The new mold platen shifting device is also optionally available in a version that can be moved away from the clamping unit either cyclically or only when required to allow access to the clamping unit from both sides.
The mold can be installed from the rear of the machine in the package without any interference points. Either mold change consoles are available for this purpose or the entire mold and cold runner package can be lifted in using a forklift.
Alternatively, the mold can also be installed plate by plate using the mold plate shifting device.
The DRC 2023 TBM control unit has also been equipped with new functions. As part of this, the user can now decide whether the operator login and password level definition should be carried out via USB stick or, as a completely new feature, via RFID cards. In addition, a function has been integrated that allows the user to configure RFID cards or similar directly on the machine OP.

Hydraulically, this machine is equipped with two generously dimensioned servo axles in order to be able to dynamically inject sufficient power reserves, including larger shot volumes. The EnergyControl+ system developed by DESMA ensures optimum energy consumption in every case, including all connected media, and provides a clear picture of the actual consumption through real measurement with extensive built-in sensor technology and automatically optimizes all consumers installed in the machine.