Design Skills of Blow Mold that Need Special Attention

Blow molds are widely used in the hardware industry, and what  techniques should we pay special attention to? Now let us learn something about it.

Basic principles of blow mold design

Safety and convenience in production (processing, assembly, injection) are the top priorities in plastic blow molding. The designed and manufactured molds ultimately serve production better. In injection production, convenience is just as necessary as compatibility.

Blow mold design should follow customer requirements

Customer requirements: material surface and assembly requirements; mold steel, accessory material, and hardness requirements; mold interface with injection machine; specific brand of mold standard part; specific methods of mold components; similarity between drawings and provided blueprints, common viewing angle. If the customer has no special request, company standards will be followed. Advantages of using company standards include cost and time savings, stock availability, and easier duplicative processing. Company standards are stable and reliable, because such standards have already been verified through practice and are not easy to make mistakes. Keep structure as simplified and rational as possible. The simpler the better, because we should save time and shorten processing cycles.

Blow mold design must guarantee strength and lifespan

Improving the strength of multi-cavity plastic injection molds is also for improving the lifespan of the mold. Although overall strength can be limited by product and structural constraints, there must be a balance found between strength and cost. Saving costs means increasing profit. To design a set of qualified and reasonable multi-cavity mold, we must consider the problem from multiple angles. From the customers' point of view, we need to consider how to design the blow mold with the lowest cost, which can complete the mass production within the mold life, maximize the company's profit, and ensure the product appearance and assembly effect; From the manufacturers' point of view, we need to consider how to shorten the processing cycle while ensuring the effect, how to facilitate the assembly of technicians and reduce the error rate. If we want to avoid unsafe and uncontrollable factors in the whole set of molds, we must ensure the order and unity of mold opening.

Material selection

The different production raw materials for plastic molds directly impact injection production. Mold structure and steel quality are critical in the design process. Therefore, before designing a product, we should have a full understanding of the raw materials produced. Think about how to give full play to the advantages of the characteristics of plastic raw materials and how to save costs in many ways. In a word, it is necessary to find a golden balance point between price and performance.