As plastic injection mold builders, we are dedicated to problem solving and customer satisfaction. Tooling Molds West can build a mold to your specifications from parts, prints or an electronic data base.

Our molds are being used by the automotive industry, CATV systems, cellular phone manufacturing, communication, computer peripherals, pharmaceutical, recreation, and other electronic and medical applications.

With our 150 and 220 TON Injection MoldING PRESSES we have sampling capabilities for your quality assurance. We also offer the manufacturing of plastic injection parts from your molds or molds built by Tooling Molds West.

Plastics Injection Molding
Burger & Brown Engineering is eager to help with your injection molding projects. Our engineering staff will personally oversee the details of your part production. Your mold tryout, short run and larger production runs are our top priority.

Mold Tryout
After the design and mold work are finished, Burger & Brown Engineering can install and test your Injection Mold in one of our all-electric presses. Troubleshooting and additional rework can be performed in our facility, saving you transportation costs and time. Use our engineering expertise to fine-tune your product and process to help you create perfect molded parts.

Short Run
Let us quote your smaller Injection Molding jobs. We are efficient with prototype or small production quantities. Attention to detail sets us apart from the rest.

Production Quantities Our Injection Molding machinery is maintained to the highest factory specifications for reliable operation. Parts are visually inspected during production to verify compliance with your requirements. Large production runs are delivered according to your schedule.

Inspection Statistical Process Control is performed by our skilled Quality Assurance Staff. Our capability ranges from visual part examination to sophisticated microscopic dimensional verification. Call us to discuss the details of your plastic parts. We have over 50 years of collective experience in the plastics Injection Molding industry. --You can trust us with your critical components.

Clamping Unit in Injection Molding machine

 

The clamping unit holds the mold together, opens and closes it automatically, and ejects the finished part. The mechanism may be of several designs, either mechanical, hydraulic or hydromechanical.

Clamping Units. Clamping designs are of three types: toggle, hydraulic, and hydromechanical. Toggle clamps include various designs. An actuator moves the crosshead forward, extending the toggle links to push the moving platen toward a closed position. At the beginning of the movement, mechanical advantage is low and speed is high; but near the end of the stroke, the reverse is true. Thus, toggle clamps provide both high speed and high force at different points in the cycle when they are desirable. They are actuated either by hydraulic cylinders or ball screws driven by electric motors. Toggle-clamp units seem most suited to relatively low-tonnage machines.

Two clamping designs: (a) one possible toggle clamp design (1) open and (2) closed; and (b) hydraulic clamping (1) open and (2) closed. Tie rods used to guide movuing platens not shown.

Hydraulic clamps are used on higher-tonnage injection-molding machines, typically in the range 1300 to 8900 kN (150 to 1000 tons). These units are also more flexible than toggle clamps in terms of setting the tonnage at given positions during the stroke. Hydromechanical clamps are designed for large tonnages, usually above 8900 kN (1000 tons); they operate by (1) using hydraulic cylinders to rapidly move the mold toward closing position, (2) locking the position by mechanical means, and (3) using high pressure hydraulic cylinders to finally close the mold and build tonnage.