How can the design flexibility of precision mold accessories inner guide pin and guide sleeve meet the needs of complex mold structures?
Publish Time: 2025-04-16
In modern manufacturing, the design flexibility of precision mold accessories is crucial to meet the needs of complex mold structures. Among them, the design flexibility of inner guide pin and guide sleeve, as key components in the mold, directly affects the precision, efficiency and adaptability of the mold.1. The role and importance of inner guide pin and guide sleeveThe inner guide pin and guide sleeve are mainly used to accurately position the parts in the correct position of the mold during the stamping process. It can prevent the parts from shifting during feeding or stamping, and ensure the quality and dimensional accuracy of the product. The inner guide pin and guide sleeve are usually composed of a head, a guide section and a tail. The head is used to cooperate with the hole of the part for positioning, the guide section ensures that the guide pin enters the hole of the part smoothly, and the tail is used to fix it on the mold.2. Design flexibilityDiversified structural forms: The design of the inner guide pin and guide sleeve can adopt a variety of structural forms according to the specific needs of the mold. For example, the penetration guide pin mainly uses the guide pin diameter as the positioning basis, which is suitable for occasions with high positioning accuracy requirements; the tapered guide pin uses the circular hole feature and the taper of the conical guide pin as positioning. In theory, the conical guide is more accurate than the diameter guide.Adjustable positioning accuracy: The positioning accuracy of the inner guide pin and guide sleeve can be achieved by adjusting its diameter, taper, protrusion and other parameters. For example, the difference between the diameter of the penetration guide pin and the positioning hole diameter can adjust the feeding error value; the taper slope of the tapered guide pin can also affect the positioning accuracy. This adjustability enables the inner guide pin and guide sleeve to adapt to mold structures of different complexities.Flexible fixing method: The fixing method of the inner guide pin and guide sleeve is also flexible. It can be directly fixed on the stripping plate. This method has low processing cost and low parts cost, and is currently a commonly used design method. In addition, the inner guide pin and guide sleeve can be fixed on the upper clamping plate, and the protrusion of the straight part of the guide pin can be adjusted by adjusting the length of the equal height sleeve. Although this fixing method has a high processing cost, it can avoid the problem of interference between the guide pin and the positioning hole when the positioning hole is worn and the aperture is reduced.Adapt to different material thicknesses: The design of the inner guide pin and guide sleeve can also be adjusted according to the thickness of the material. For example, when punching thicker materials, if a penetrating guide pin is used, the guide pin may retreat and fail to pass through the material strip to achieve the positioning function due to the thick material. At this time, the design of a movable guide pin can be adopted, and a fixed guide pin can be used in the first and second stations after the positioning hole is punched to avoid positioning errors caused by spring fatigue or other factors.3. Examples of meeting the needs of complex mold structuresIn complex mold structures, such as multi-station progressive dies, the design flexibility of the inner guide pin and guide sleeve is fully reflected. The multi-station progressive die consists of multiple stations, and each station completes a stamping process. The stations are connected by guide plates, guide columns and other components to form an overall structure. The inner guide pin and guide sleeve are usually installed before the first station or at key stations to ensure accurate positioning of the parts.For example, in the stamping die of automobile cover parts, due to the complex shape of parts and high dimensional accuracy requirements, the design of inner guide pin and guide sleeve needs to fully consider the structural characteristics and production requirements of the mold. By adopting tapered guide pins, adjusting the protrusion of guide pins, optimizing the fixing method and other measures, the stability and positioning accuracy of inner guide pin and guide sleeve in complex mold structures can be ensured.The design flexibility of inner guide pin and guide sleeve of precision mold accessories is fully reflected through diversified structural forms, adjustable positioning accuracy, flexible fixing methods and adaptability to different material thicknesses. These design features enable inner guide pin and guide sleeve to meet the needs of complex mold structures and improve the accuracy, efficiency and adaptability of molds.
