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Connector terminal is a common connector product in the industrial automation industry. It has a wide range of types and complete functions, and has an absolute advantage in the field of wire connection and signal transmission. End connection means the connection between the terminal contact and the wire or cable. Reasonable choice of connection mode and correct use of end connection technology is also an important aspect of the use and selection of plastic terminal.

welding

The most common type of welding is tin welding. The most important thing of soldering connection is that the metal continuity should be formed between soldering material and the welded surface. Therefore, the weldability is important for the terminal and the cold pressure terminal. Tin alloy, silver and gold are the most common coatings on the welded end of connecting ring terminals. Reed contact for common welding ends, such as welded plate, punched hole plate and notched plate: pinhole contact for common welding ends, there is a drilling arc notch.

Pressure welding

Compression is a technique used to compress and displace metal within a specified limit and connect wires to contact pairs. Good pressure connection can produce metal mutual melting flow, so that wire and contact on the material symmetric deformation. This kind of connection is similar to the cold welding connection, which can get better mechanical strength and electrical continuity, and it can withstand worse environmental conditions. It is generally accepted that proper pressure connection is better than tin welding, especially in high current situations. Special pressure or automatic, semi-automatic press shall be used when pressing tongs. According to the cross section of the cold - pressure terminal and the cold - pressure terminal head, the correct selection of the contact pair of lead cylinder. Note that the compression connection is permanent and can only be used once.

Wire wrap

The wire is wound directly around the contact post with a prismatic contact. When the wire is wound, the tension is controlled and the wire is wound. The wire is pressed and fixed at the edge Angle of the contact piece around the connecting column to form the airtight contact. There are several requirements for wire wound: the nominal value of wire diameter should be within the range of 0.25mm~1.0mm; When the wire diameter is not more than 0.5mm, the elongation of the conductor material is not less than 15%. When the diameter of wire is more than 0.5mm, the elongation of conductor material is not less than 20%. The wrapping tools include the wrapping gun and the stationary wrapping machine.

Prick in succession

Puncture connection, also known as insulation displacement connection, is a novel end technology invented by the United States in the 1960s, featuring high reliability, low cost and convenient use. It has been widely used in all kinds of printing plate terminals, cold pressure terminals, cold pressure terminals and ring terminals. It is suitable for the connection of ribbon cable. It is not necessary to peel off the insulation layer of the cable when connecting, and the tip of the "U" contact reed of the terminal is inserted into the insulation layer, so that the conductor of the cable slides into the groove of the contact reed and is caught, so as to form a close electrical connection between the conductor of the cable and the reed of the terminal. It requires only simple tools, but the cable with the specified wire gauge must be chosen.

Screw connection

Screw connection is the connection method of screw terminals. Lianjie reminds you to pay attention to the maximum and minimum cross sections of the connecting wires and the maximum tightening torque allowed by screws of different specifications.