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- Tunnel type batch-off cooling lines for slabs and strips
- Cantilever type batch-off cooling lines for slabs and strips
- Optional equipment for batch-offs, such as printing, slitting, weighing, etc.
- Wide variety of stacking equipment for slabs, strips and sheets
- Cutting and feeding equipment
- Combex hot feed strainer
VMI specializes in designing and manufacturing of equipment, that handles non-vulcanized rubber for a variety of applications.
Tunnel type batch-off
The HP (High Performance) batch-off is a tunnel type cooling line, designed to handle slabs of rubber compound with a maximum width up to 1200 mm and a throughput up to 11 tons/hr. Several type of stackers and other optional equipment is available to meet all your requirements. By its versatility, the perfect solution for as well the technical rubber industry, as well the tire industry.
The picture shows a tunnel type batch-off for medium to high throughput with the MHD III Stacker.
Thanks to the high throughput and reliability our tunnel type batch-offs can be found in the millrooms of major tire manufactures and are used for master, final or remix production.
Cantilever batch-off
The cantilever type cooling line forms the foundation for a wide variety of batch-off and strip cooling combinations. The heart of the system is an electrical driven cooling rack with bars attached only on one side (cantilevered), and a dipping section. The cooling rack length, i.e. the number of effective bars, and the further execution is dependent upon the specific customer’s requirement and application.
A VMI cantilever combination can vary from a cooling rack with just six fans and a simple one-strip stacker, to a complete multifunctional batch-off system, capable of handling separate strips, slab, perforated slab, and cut sheet.
The pictures shows the Cantilever Batch-off with MHD Stacker, box/pallet conveyor and end-of-strip cutter.
This specific combination enables you to handle slabs or strips. The MHD (Multi High Density) Stacker is capable of very high precise stacking strips at high speed. The pallet, or box conveyor enables a complete automatic operation.
Optional equipment for batch-offs
For our customer’s needs and requirements, batch-offs can be customized with a lot of optional equipment, i.e.:
- Impression batch printer
- Hot strip slitter unit
- Automatic hot and cold sample taking unit
- Excessive dip liquid blow-off unit on dip tank
- Automatic bar cleaning device
- Batch tracking and weighing system
- Pallet handling systems, either for flat, or box pallets
The picture shows the automatic cold sample taking unit, integrated in the stacking unit
The picture shows the automatic pallet handling systems for flat pallets
Wide variety of stacking equipment
At the end of the tunnel, or cantilever type batch-off VMI offers a variety of stacking equipment for stacking slabs, sheets, perforated sheets and strips.
- Pendulum type stacker, for uncontrolled lay-down of sheets, and/or slabs
- Patented MHD III stacker, combines a wide range of stacking possibilities with a high stacking speed
- RCP stacker, for very precise stacking at high speed of very wide sheet or slab
- Patented MHD 500 stacker, for cantilever type batch-offs, combines a wide range of stacking possibilities with a high stacking speed
- WWE 200 stacker, for stacking of one, or optionally two strips with a maximum width of 200 mm
- HP stacker, for controlled strip and slab stacking on a flat pallet
The picture shows the Detail pendulum type stacker
Cutting and feeding equipment
The unique properties of rubber makes the cutting of a cold rubber slab a challenging task, requiring a skillful and robust approach. Calling on many years of practical experience, VMI has developed a range of cutting machines for customer specific applications. Depending on the application and desired result, various methods are used, including cleaving, shearing and chopping. These mixer or extruder feeders have been developed and proven through VMI's rich heritage in the tire and rubber industry.
Customers can depend upon the VMI build quality for robust and sturdy machines which are designed to handle the high forces involved.
The picture shows the mixer feeder type 329. With this feeder, second stage batches can automatically be fed in to the mixer.
Combex hot feed strainer
- Extruder gear pump systems for straining applications in the millroom -
VMI-AZ delivers since many years extrusion systems for rubber straining applications. All systems consist of a single screw extruder in conjunction with a gear pump and a strainer head, or rapid screen changer. Within the last few years the market request has been changed from low output cold feed systems to high output hot feed systems. This is due to the fact that most straining applications are now moved to the millroom where the rubber is fed to the strainer system directly from the batch-off, or mill. Because of this the extruder gear pump strainer needs to provide a high output to keep up with the output of the mixer. The latest design at VMI-AZ is a Combex 150 extruder gear pump system with an output of 3,500kg/h at a compound density of 1,1g/cm³.
In addition to rubber straining Combex strainer systems are already in operation for high output silicone straining applications.
The picture shows the Combex 120 with gear pump.
The picture shows the Combex 150 with gear pump.
For more information please see our brochures or contact us sales@vmi-group.com.