Is there any way/script to find and remove the files which are older than 6 hours, since the files are generated at frequent intervals. These files grow at a rapid rate and fills up the disk quickly. Appreciate your response. Thanks

Run this every 6 hours from cron.

if [ -a /tmp/timestamp ] ; then
find /full/path/to/tmp/directory -type f -newer /tmp/timestamp -exec rm -f {} \;
fi

touch /tmp/timestamp

Could you please explain what exactly is in '/tmp/timestamp'?

The script is not dependent on the content of /tmp/timestamp. The touch command will either create an empty file or update the timestamp of a file based on date time information used.

man touch

The -newer flag for find says to find files newer that some file.

man find