Robotics for rotational & blowmolded parts

With the constant challenge of finding skilled labor to do secondary finishing it's time to take your business to a new level. Increase productivity. Reduce costly injuries. Lower scrap rates. And increase accuracy and cosmetics of your molded plastic parts. It's time to contact us at Rock Lake Robotics to design and build you a robotic cell.  920-648-3402 or email

Spin Welding VIDEO

Machining a tank and installing spinweld fittings

About Us

Rock Lake Robotics is a division of Seljan Company, focusing on helping plastic manufacturing  companies improve production, efficiency and safety. With over 25 years in machine design and  automation, Integration Technology can help with your most challenging integration needs. Experience in assembly, advanced fastening, fluid dispensing and packaging as well as robotic cells.    

Industries served include; · Rotational Molding - Blow Molding - Vacuum Forming - Injection Molding

Rock Lake Robotics uses the latest engineering tools. Utilizing SolidWorks 3D design software, We can provide our customers with a complete design of their project,  Mechanical Engineering and Design · Electrical Engineering and Design. Controls and Robot Programming · Complete Project Management .


                                       CLICK HERE TO DOWNLOAD CURRENT PRICE LIST

Flaming Robot VIDEO

Consistently Finish Parts FASTER!

Flaming Robot VIDEO



Machining 10 different features in a cooler

"In 2016 finishing had 8 work comp injuries to workers that did this job with hand tools. Since moving it to a robot we have had no injuries. The robot does the job more efficiently. We have reduced labor from 3 employees to one robot operator with NO scrap. The payback on this robot cell was less than 12 months. The fixture we designed is auto adjusting to accommodate multiple shaped parts at different dimensions on the fly. This allows us to feed the robot from 10 different molds."

"This part size allowed us to build a turntable  fixture. While the robot is busy, the operator unloads and reloads the fixture. After the cycle completes the operator indexes the part into the robot cell. We have reduced the production time from 3 shifts to 1! And the scrap rate stands at 0 %."

"The Robot is cutting handholds in this roto-molded step"

The Association of Rotational Molders offers members more than 60  videos and webinars to watch on demand.   We recently presented the webinar below  for them.

Contact Us

We love our customers, so feel free to visit during normal business hours.



PO Box 158 | 100 S CP Avenue | Lake Mills, WI | 53551

(920) 648-3402


Open today

07:00 am – 04:00 pm

Drop us a line!