12.9 grade hexagonal plug screw mold with equal height screw protruding shoulder shaft shoulder limit bolt

The flat gasket is an accessory on the high-speed rail base plate. The two planes of the product are required to be flat, the shape and size of the internal hole are accurate, and there are no Casting defect (such as air holes, shrinkage holes, sand holes, etc.). The casting material requirements are GB/T450-12. Due to the light weight and large demand of flat gasket, if it is produced by ordinary sand casting process, the casting is easy to produce Casting defect such as deformation, sand hole, air hole, etc., and the molding area is large, the production efficiency is low, and it is difficult to complete the production task.

In another implementation of Guangdong Yueluo Hardware Industry Co., Ltd., the discharge port of vibration disk 2 is matched with the screw holding hole 35. After the screws are sorted and sorted in vibration disk 2, they can enter the screw holding hole 35 through the discharge port. Preferably, a guide rail 6 is arranged between the discharge port of the vibration disk 2 and the screw accommodation hole 35. The screws enter the screw accommodation hole 48 through the guide rail 6 from the discharge port. Through this setting, automatic sorting of screws and automatic slotting can be achieved, improving efficiency and saving manpower costs.

In addition, in the past, rivets were also used to rivet screws on metal plates. The riveting is a nail like component with a cover at one end, and the riveting process utilizes its own deformation and interference to rivet the components. When using rivets, it is necessary to set appropriately sized positioning holes at the corresponding positions of the two metal plates, and rivet the rivets directly through the positioning holes. This riveting method does not require welding, but there are obvious rivet heads left on the back of the metal plate. In the past, the surface of two metal plates after riveting was covered with smooth metal sheets to cover the riveting marks, which increased the overall cost and production process of the metal sheets, while limiting the riveting process.

The function of waterproof gaskets is mainly to prevent the leakage of liquid or gaseous substances and the invasion of external liquids, achieving the effect of sealing and sealing. The general waterproof gasket is designed in the shape of a rubber circular ring plate.

A rivet is a rod-shaped part made of metal with a nail cap at one end. During riveting, the rivet uses its own deformation or interference to connect the riveted part. The commonly used rivets include half round head, flat head, half hollow head, solid head, countersunk head, pop out rivet, hollow rivet, etc. At present, rivets are widely used in various backboard products and other stamped parts. Due to the functions of locking, positioning, and bearing lateral forces in the products, backboard products have high requirements for the tightness and verticality of the rivets. However, in actual production, there are often problems such as inadequate rivet torque, skewed rivets, chipped rivet surfaces, inaccurate rivet placement requiring manual repositioning, which make it difficult for backboard products to meet quality requirements, resulting in high rework rates and low work efficiency.