What are the processes of wire harness processing- Jijin Industral Co., Ltd.

The quality of the wire harness material directly affects the quality of the wire harness, and the selection of the wire harness material is related to the quality and service life of the wire harness. So what is the process of wire harness processing?

The wiring harness processing and production process is divided into the following parts: cutting wire → peeling → brushing wire → twisting wire → tinning → terminal crimping → sub-assembly → assembly → electrical inspection → appearance inspection → packaging.

1. Cutting line

Use automatic wire cutting equipment to cut the wires according to the size required by the process, arrange the cut wires neatly (50 pieces/tie) and place them in the designated position, and paste the logo.

2. Peel off the skin

Install the corresponding blade according to the wire specification, adjust the strokes of peeling, thread clamping and tangent according to the process index, adjust the size adjustment plate according to the peeling length, place the wire rod in the middle of the blade, press the thread head against the size adjustment plate, step on the pedal Perform peeling.

3. Brush the line

Turn on the power, turn the electric copper brush clockwise, separate the exposed oblique cladding at both ends from the core wire according to the method shown in the SOP, and twist the separated oblique cladding (ie, the ground wire) tightly and straight.

4. Twist the wire

The twisting clip is complete and the rotating force is even. Clip all the brushed copper wires into the twisting clip for twisting (the copper wire should be clamped at the bottom of the middle).

5. Dipping tin

Adjust the tin furnace (300±20℃) according to the temperature given in the SOP, arrange the wires, separate and align the core conductors, dip the core conductors with flux, and send the core wires vertically when tinning To the tin furnace (size according to SOP requirements), the wire must be taken out immediately when the core wire is in place.

6. Terminal crimping

The cut wire is crimped to the terminal with a small crimping machine, sometimes multiple wires can be crimped on one terminal.

7. Packing

The crimped wires are sub-packaged according to the sub-assembly process requirements, that is, the terminals are inserted into the sheath.

8. Assembly

Assemble the sub-assembled sub-assemblies according to the circuit direction on the drawing board (bundle with tape or pull tape, that is, wire harness).

9. Electrical testing

Use a standard wire testing machine to test the voltage resistance, impedance, short circuit and other properties of the wire.

10. Appearance inspection

Use the naked eye to check whether some appearance parts meet the standards, whether there are missing accessories, etc.

11. Packaging

Arrange the wires neatly.

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