The use of DuPont wire crimping pliers

How to Use Dupont Crimping Pliers#

Tools: From left to right: crimping pliers, wire strippers, terminals, flat-nose pliers, diagonal pliers

Crimping pliers are essential, the rest are optional

Crimping pliers model: 28B, price around 45 yuan

The ratchet mechanism of the crimping pliers has five slots, corresponding to five scale positions when pressed, making a clicking sound

Use the outermost crimping slot of the Dupont wire. In this picture, the upper opening is slightly larger, corresponding to the opening for crimping, and the lower end is for crimping the copper wire. If you don't understand, continue reading or you can ignore it.

Key point 1: Hold the pliers with your right hand, hold the pliers with your right hand, hold the pliers with your right hand, fix the crimping pliers with your thumb and index finger, and place your middle finger and ring finger behind for leverage.

Change the position, hold the pliers vertically, and continue holding the pliers with your right hand.

Place the terminal, Dupont wire female spring, hold the terminal with your left hand; pay attention to the orientation of the terminal, it should be facing down; that is, the opening should be facing down.

Crimp with the pliers, two positions;

Continue crimping, the third position;

Here, if you gently press and reach the third position, that is, if you press exactly to the third position and immediately release without continuing to press down to the fourth position, the terminal will be stuck; if you press the third position and do not release or press the fourth position, it will be in between, and the terminal will be loose and can be moved; if you hold it upside down, you need to press it slightly to prevent the terminal from falling off; the advantage of being loose is that you can adjust the position.

I usually don't pursue whether it is stuck or not. If it is loose, I press it slightly.

Look at the other end, the slot is exposed, and the place where the copper wire is crimped is not exposed, which is acceptable. The position can be adjusted.

Usually, in the previous step, I pull it out where it extends, stop at the stuck position, and then press it slightly. Then, I can thread it.

Strip the wire with wire strippers about 2-3cm, and if necessary, use a lighter to heat it.

After stripping the wire, twist it into a single strand to facilitate threading.

Still hold the pliers with your right hand, hold the wire with your left hand, and thread it.

Twist and turn, the wire is threaded; the wire should not be too thick, the wire gauge is 26AWG; the specification written on the pliers is 0.25mm².

AWG: American Wire Gauge standard

Key point: After threading the wire, the copper wire should stick out a bit; as shown in the picture.

Key point: After threading the wire, the copper wire should stick out a bit; if the stripped wire is longer, the copper wire can be slightly longer.

Qualified:

Not qualified:

This picture roughly means that the insulation should be pressed down, and the copper wire should be exposed; the trumpet mouth means that the insulation should not reach the layer where the copper wire is crimped.

Press it firmly; if you don't have enough strength, you can press the lower end on the table and use the palm to exert force to fully crimp it, then release it.

After crimping, front view

After crimping, back view

Key point: If you try to thread the terminal at this point, you will find that the end gets stuck and is slightly wider. Therefore, you need to use flat-nose pliers to press it slightly.