Relationship belongsTo / hasMany returns nothing

Hey everyone,

I'm having trouble understanding why one of my 1:n relationships i defined with eloquent is not working right now. Basically I have a table for each slider and a table for the corresponding images.

I have set the id on the slider table as foreign key when migrating in the images table and seeded one slider with three images that correctly reference slider_id = 1 on phpmyadmin.

Slider Model:

class Slider extends Model
{
  /**
   * The database table used by the model.
   *
   * @var string
   */
  protected $table = 'sliders';

  /**
   * Get the images for that slider
   */
  public function images()
  {
    return $this->hasMany('App\Models\Slider\Slider_Image', 'slider_id');
  }
}

Slider Image Model:

class Slider_Image extends Model
{
  /**
   * The database table used by the model.
   *
   * @var string
   */
  protected $table = 'slider_images';

  /**
    * Get the slider that owns the image
    */
   public function slider()
   {
       return $this->belongsTo('App\Models\Slider\Slider');
   }
}

But when i try to call the relationship in my controller like below i do not receive any output at all.

$slider = Slider::find(1);
$images = $slider->images();
print_r($images);

If i try to query the images like using the image model everything works fine! Slider_Image::where('slider_id', 1)->get();

Does anyone have a clue as to why the relationship does not return anything?