Save the Fileds in Form Library using Infopath

Step 1:Go to Infopath choose blank form

Step 2: Select  container selection option and set Rules for Date

 

Step 3:Right click the Date TextBox control and Go to Properties:

And set value: substring-before(now(), "T")

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 Step 4:

Right click the Time TextBox control and Go to Time properties:

And set value: substring-after(now(), "T")

 Step 5:

In  Data Tab à Click the submit option

Select the document library optionà Choose a data connection for submit  à Add

Step 6:

Set File name: click  and select Insert Function and choose concat and select fields like: concat("save", Date, "-", Time)

After the fields are set  click Next button and Finish.

Step 7:

Select File TabàPublishàSharepoint server and publish Your site.