mates fail during animation

Hi there,

I'm new to solidworks animation and I'm trying to animate a gate to open and close, whilst simultaneously a flap, on the gate, also opens and closes (see video attached). However, when viewing the animation the mates between the gate and flap come loose and the flap goes flying.

I've tried:

  • standard mates using edges and surfaces.
  • hinge mates (edges and surfaces).
  • changing the interpolation mode.
  • restarting the animation from scratch.
    • I made sure that all components of the gate had no yellow lines during the animation
    • I had no red keys
  • redesigning the gate and flap.

Please advise.

I apologise if this has been answered or in the wrong thread, I just cannot seem to find an answer.

Looking forward to your replies.

SolidworksAssemblies