Cold Press Needle Mold Installation And Parameter Setting

crimp contact The mold is divided into an upper mold and a lower mold. When installing crimp contact pin, use a micrometer to calibrate the coaxiality. contact socket crimp If the deviation exceeds 0.05mm, readjust the fixing bolts. Apply molybdenum disulfide grease to the positioning pins and guide columns to reduce friction loss. crimp contact female Parameter settings include pressure, holding time, and demoulding speed. The pressure is calculated based on the hardness of the material. For example, the common pressure range of PA66 plastic is 120-150MPa. When the thickness of the crimp contact male metal matrix exceeds 2mm, the pressure increases by 10%. The holding time is usually 30-60 seconds to avoid crimp socket contact material rebound and cracking of the bonding surface. The demoulding speed is controlled within 5mm/s. Too fast may damage the edge of the product.
female crimp contact Cold pressing operation process
Put the male crimp contact metal matrix into the positioning slot of the lower mold, and manually or mechanically clamp the filler and evenly spread it on the surface of the matrix. The thickness error of the material layer shall not exceed 0.1mm. Start the press, and switch to high pressure mode after the upper die moves down at a constant speed until it contacts the material. The pressure value is loaded in two stages: first pre-press at 50% of the set pressure for 3 seconds to eliminate bubbles, and then increase to the full pressure value to maintain the set time. After the pressure is maintained, the upper die returns, and the ejector mechanism pushes out the workpiece synchronously. During operation, the pressure curve must be monitored in real time. If there is a fluctuation of more than ±5%, stop the machine immediately to check for mold misalignment or uneven material.