Inputting multiple row entries by a factor in laravel - laravel

Question

I am attempting to recursively input a quantity of rows into a mysql database. The rows will all have the same product id but an incremental name given by product_id_incremental_number. My form is as follows:
<div class="row">
<div class="col-lg-6">
<h1>Add a new entry to the database</h1>
<p class="lead">Add your entry below:</p>
<hr>
{!! Form::open(array('method'=>'POST', 'route'=>array('inventory.store'))) !!}
<div class="form-group">
{!! Form::label('production_id', 'Production ID', ['class' => 'control-label']) !!}
{!! Form::text('production_id', null, ['class' => 'form-control']) !!}
</div>
<div class="form-group">
{!! Form::label('quantity', 'Quantity of chips:', ['class' => 'control-label']) !!}
{!! Form::number('quantity', null, ['class' => 'form-control']) !!}
</div>
{!! Form::submit('Create New Batch Entry', ['class' => 'btn btn-primary']) !!}
{!! Form::close() !!}
</div>
</div>
#stop
My controller is as follows:
public function store()
{
$data = Input::all();
$batch = $data->replicate($data['quantity']);
$batch->save();
}
return Redirect::route('inventory.index')->with('flash_notice', "Batch Created");
}
I know this isn't the full function to add incremental names to each of the items that would be in the batch, I haven't reached that point yet. My problem is that I cannot replicate an array to then insert each replicate of the batch into the database. Any help on this would be greatly appreciated.
TL;DR: It's a similar problem to ordering more than one pizza on an online cart, you just click a counter that increases the number of pizza that are added to the cart database.
Many thanks,
MF