Spring designs are not all the same and different situations require different spring solutions. 60 plus years of experience have given us the unique position to solve spring application issues for our customers. Over the years we have seen more designs and unique applications than most design engineers will see in a lifetime.
A few years back one of Titan’s customers was experiencing a high failure rate with his springs and asked us to help. When Titans engineering staff viewed the way the customer was using the spring the problem was obvious.They were using the wrong type of spring in their high speed fruit labeling machine.
The machine looked like an old movie projector with a reel on top containing labels on tape. Another reel on the bottom coiled the tape as the machine removed the labels sticking them onto the fruit. A torsion spring as pictured below was being used with the small arm anchored to the machine body. The large arm with the loop instead of rotating toward the coils the way torsion springs work it was moving away. The large arm controlled the device sticking the labels to the fruit. Because of the poor spring application it was traveling so far it was over stressing the spring causing spring failure. This resulted in unlabeled fruit and a irritated customer.
Titans engineers suggested using an extension spring which is better suited for the application.
One end was still anchored to the body of the machine. The other end traveled with the moving part of the machine on a vertical plane in a very low stress application.
Spring Problem Solved
Substituting the extension for the torsion spring extended the working life of the spring virtually eliminating the failures. The customer was ecstatic with the solution but the down side for Titan was he never ordered any more replacement springs.
The happy customer is what is most important!