Mold Making

Plastic injection molds have been built at Mountain Mold & Die for the past 22 years. During that time, extensive experience has been gained by the design, construction, and maintenance of the following types of molds:
Conventional two plate molds Three plate drop runner or stack molds Frame and unit base type molds Shuttle or carrier molds for insert molding
These molds have included the following features:
Hot drop or hot runner Mechanical or hydraulic core pulls Lifter ejection for undercuts Magnetic, static or vacuum holding for insert molding Thermal enhancement via highly conductive material or nitrogen filled cores
Typical Applications:
Plastic parts that have an annual usage of more than 1,000 for simple geometry and 5,000 or more on complex geometry. Just to clarify, some parts are produced in the millions yearly by plastic injection molding while some highly specialized parts that can only be injection molded may be produced in very small lot sizes. In the custom injection molding business, 50-250 ton press capacities & 100,000 annual usages are the norm but not a prerequisite.
Benefits:
Parts molded from a well maintained plastic injection mold can continue to produce consistently accurate parts well beyond 10 years. Extremely intricate parts can be produced in mass at a low cost with a properly constructed mold. Some high wear materials such as glass fiber filled will require hardened tool steel inserts.

Mold Design

Our custom plastic injection mold design process involves accurate communication with the customer that defines their specific needs. This can be accomplished with the digital transfer of information, reverse engineering, drawings, specifications and standards. Then we design the digital model of the mold and analyze the model to optimize the performance of each mold to achieve the best results.

Requirements:
We will require your complete specifications that should include the geometry of the part, the material type or specification the part is to be molded from, the appearance and color requirements for the part, a tolerance standard such as ISO or DIN that is applicable to any dimensions not otherwise specified. Concurrent design of tooling and part is possible when technology allows.
Typical Applications:
Hardware tools Consumer products Enclosures Automotive parts Lighting or electronic products Identification devices

Our modern mold shop has the capability to repair any mold up to 4,500 lb. The repair can involve any of the skills that are required in mold-making. Years of experience make us experts in the type of work. Request for overnight repairs are always discussed and many times can be accomplished if the need is urgent.

Solutions Include:
Milling Ginding Sinker and wire EDM Heat-treating Tool-steel welding Polishing and finish restoration