Sealing Machines: RHO II

Sealing of membranes to spirally-wound cardboard tubes
up to 300 Tube-Cans per minute

Technology:

The machine consists of 3 modules in which the following working operations are executed.

1. Forming a rolled-up flange with heat at the tube top and die-flanging at the tube bottom.
2. Cutting out membranes from metal coil and sealing of membranes to the flanged tube top (using heat).
   
3. Application of a plastic cap.

• The cardboard tubes are carefully transported.
  
• The cardboard tubes are spaced by a driven dosing-star with its own monitoring unit and fed to the tool stations by a two-fold worm.
  
• The machine outlet can optionally be equipped with a conveyor belt and a two-fold worm.
  
• A can-turning unit is attached to the outlet (optinal).

First module:

• A rolled-up flange is created at the upper top of the cardboard tube by a heated die-flanging tool.
  
• Each tool is fitted with an automatically controlled heating system with adjustable temperature.
  
• Conventional die-flanging is carried out at the cardboard tube bottom section.
  

Second module:

• Two membranes are cut out from the membrane coil simultaneously by a two-fold punching tool.
  
• Optimized material utilisation is reached by servo drive of the membrane coil. (less scrap)
  
• Sealing of the membrane to the rolled-up flange.
  
• Automatically controlled heating for each tool.
  
• Constant sealing temperatures during the production process.
  
• Heated reserve tool.
  

Third module:

• The stay-on tab is bent downwards.
  
• Plastic caps are fed to the station and put on the tube-cans.
  
• Control device for cap application.
• Permanent monitoring of the machine parametres.
  
• Control device for printed membrane surface (optional).
  
• Overheat protection of the sealing process.
  
• If a cardboard tube or membrane is missing, sealing is not carried out.
  
• Quality check by video monitoring (option).
  
• Automatic ejection of faulty tubes. The sealing-tools are fitted with a quick-change system.
  The machine is equipped with high-quality components,
  thus ensuring low maintenance.
• Central height adjustment by PLC for different tube heights.
  

Standard Specification
	1 membrane coil	1 membrane coil
	8	4
	300	150
	B = 70 - 140 mm L = 70 - 140 mm D = 50 - 105 mm