laravel $request获取表单数据为空。我是依赖注入的

自定义类：
namespace App\Http\services\register;

use App\Http\model\register\sign;
use App\Http\services\common\Inter;
use App\Http\services\common\Demo;
use Illuminate\Http\Request;
use Illuminate\Contracts\Validation\Validator;

class Resign extends Demo implements Inter{

public $request;

public function __construct(Request $request)
{
    $this->request = $request;
}

public function logic(){

    dd($this->request->all());
}

}
控制器：
namespace App\Http\Controllers\Admin;

use App\Http\services\common\Demo;
use Illuminate\Http\Request;
use App\Http\services\register\Resign;
use Illuminate\Contracts\Validation\Validator;
class SignController extends Demo
{

public function Register(){
        $reg =new Resign((new Request()));
        $reg->logic();
}

}
请问 ：我依赖注入Request 类 ，我在自定义类里打印 总是空数组，我前台表单 已经提交数据了。