Four connection technologies for terminal blocks

Four major connection technologies for terminal blocks Terminal blocks are common connection accessories in the industrial automation industry. They have a wide range of types and complete functions. They have absolute advantages in the field of wire connection and signal transmission. Termination mode refers to the connection mode of the terminal contact pair with the wire or cable. Reasonable choice of connection method and correct use of termination technology are also an important aspect of the use and selection of plastic terminals. The most common type of soldering is soldering. The most important thing for soldering connection is the continuity of the metal between the solder and the surface to be soldered. Therefore, solderability is important for terminals and cold-pressed terminals. The most common coatings on the solder side of the wire ring terminal are tin alloy, silver and gold. The reed type contact has the welding piece type, the punching welding piece type and the notched welding piece type for the common welding end: the pinhole contact has the drilling arc notch type for the common welding end. Crimping Crimping is a technique for compressing and displacing metal within specified limits and connecting wires to contact pairs. A good crimp connection can produce metal mutual fusion flow, so that the wire and the contact pair material symmetrically deform. This connection is similar to a cold-welded connection, which can obtain better mechanical strength and electrical continuity, and it can withstand more severe environmental conditions. At present, it is generally believed that the correct crimping connection is better than soldering, especially in high-current occasions, crimping must be used. Special crimping pliers or automatic or semi-automatic crimping machine must be used for crimping. According to the wire section of the cold-pressed terminal and the cold-pressed end, the correct wire barrel should be selected correctly. It should be noted that the crimp connection is a permanent connection and can only be used once. Winding winding is the direct winding of the wire on the angular contact winding post. During winding, the wire is wound under controlled tension, pressed in and fixed at the corners of the contact piece winding post to form an airtight contact. There are several requirements for winding wires: the nominal value of the wire diameter should be within the range of 0.25mm~1.0mm; when the wire diameter is not greater than 0.5mm, the elongation of the conductor material is not less than 15%; when the wire diameter is greater than 0.5mm, the conductor The elongation of the material is not less than 20%. Winding tools include winding guns and fixed winding machines. Screw connection Screw connection is a connection method using screw terminal blocks. It is precisely reminded that you should pay attention to the maximum and minimum cross-sections of the allowable connecting wires and the maximum tightening torque allowed by screws of different specifications.