从xib文件中使用批量复制

使用xib创建视图，条件是：

有批量UIView IBoutlet的对象
IBOutlet UIView *viewOpenDoor;
IBOutlet UIView *viewOpenDoor_Second;

viewOpenDoor 是唯一连接到xib中一个视图。现在我使用下面的代码在Viewdidload方法中重新用同样的视图：

[viewOpenDoor setFrame:CGRectMake(30, 80, viewOpenDoor.frame.size.width, viewOpenDoor.frame.size.height)];
[self.view addSubview:viewOpenDoor];
viewOpenDoor.layer.borderColor = [UIColor blackColor].CGColor;
viewOpenDoor.layer.borderWidth = 0.9f;
viewOpenDoor.layer.cornerRadius = 6.0f;

 [viewOpenDoor setHidden:YES];

viewOpenDoor_Second = [[UIView alloc] init];
viewOpenDoor_Second = [viewOpenDoor copy];

[viewOpenDoor_Second setFrame:CGRectMake(184, 80, viewOpenDoor.frame.size.width, viewOpenDoor.frame.size.height)];

[self.view addSubview:viewOpenDoor_Second];

然后报出异常：

-[UIView copyWithZone:]: unrecognized selector sent to instance 0x95ba140
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView copyWithZone:]: unrecognized selector sent to instance 0x95ba140'

应该怎么重新使用这个在xib中创建的IBOutlet 对象，带有多个不同实例化呢？