ApplicationsApplication of a pumpable sound deadener inside vehicle pillars during the body manufacturing process

Industry
Automotive
Fluid
Pumpable sound deadener

Current challenges and requests

In the body manufacturing process, a sheet-type sound deadener was applied manually. However, applying the deadener in hard-to-reach areas increased operator workload and posed a risk of missed installation. Switching to a liquid material promised reduced backing-paper waste, but introducing a pumpable sound deadener presented several challenges.

  1. The pumpable sound deadener had to be applied deep inside pillar structures.
  2. The ultra-high-viscosity material had to be applied quickly, with sufficient width and thickness to ensure effective sound deadening.

Solutions and merit when improved

To address these challenges, the Hose-Free System—capable of high-precision application of highly viscous materials—was adopted.

  • With no hoses on the robot’s moving parts, the Hose-Free System enabled flexible application even in deeply recessed areas of the vehicle body.
  • Eliminating hose constraints also simplified robot teaching during setup.
  • Even with ultra-high-viscosity material approaching 1,000,000 mPa·s, the Hose-Free System consistently applied the required amount with high accuracy and within the specified cycle time.
  • Switching to a pumpable sound deadener enabled process automation, reducing manual labor while ensuring high sound insulation performance.
Diagram showing automated application of pumpable sound deadener using Mohno Dispenser Hose-Free System.

Related information

Did you know?
Mohno Dispensers are progressing cavity pumps.

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