How to ensure the flatness of the shielding cover? -Hardware

Talking about the flatness of the shielding cover, many friends know it in use, because of its thin material, weak structure, and the height of the SMT top tin is within 0.12MM, so the flatness requirements are very strict and easy What is bad is also a problem of flatness. The belt should be flattened to eliminate stress, it is best to use one-step forming, the inside can be formed first, the outer part can be cut and formed in the last step, and the bending can be as shown in the figure. Keep the bending gap consistent and the bending height consistent. The elasticity of the floating block must be large enough, the molding positioning must be accurate, and the tooth height of the product must be consistent, otherwise it will be supported on other sides to make it upward. If it is not enough, it is recommended to grind the ribs! But the flatness adjustment methods are similar, mainly depending on the mold structure! The design method of the shield mold: process analysis of the product. Shields such as mobile phone shields, GPS shields. When designing the shielding cover, it is necessary to consider which method is used to manufacture; expand the calculation of the 2D drawing of the mobile phone shielding cover; and fine-laying tape. Array the unfolded shielding cover in 2D, determine the process and draw the assembly drawing of the shielding cover hardware mold; draw the various parts of the shielding cover hardware mold. Hardware, 15 years of ingenuity and focus on the production of shielding covers, silk-like precision + 16 strict quality inspections, and the concept of the result of your needs as the result of the work, let you choose, choose to rest assured!