Ji Jin is a professional engaged in various types of plastic mold design, manufacture and injection molding processing of production-oriented enterprises.
In simple terms, automotive wiring harness assembly is to bundle various types of wires into bundles, called wiring harnesses. The uniform wrapping can protect the insulating layer, at the same time, it can better connect the components and save space. The materials of automobile wiring harnesses are mainly wires, connectors, and sensors.
Automotive wiring harness assembly process
Before the assembly of the automobile wiring harness, it is necessary to be familiar with the principle of the circuit diagram, wiring, and processing of various parts to facilitate subsequent processing. The production and processing of automotive wiring harnesses can be divided into two parts. The first part is crimping terminals, including two forms of automatic crimping and semi-automatic crimping. The second part is the assembly process, which can be divided into the pre-assembly process and final assembly process.
Automotive wiring harness assembly attention points
Selection of connectors and sheaths: Generally, chassis wiring harnesses are made of corrugated sheaths with good flame retardant and mechanical properties, while cab wiring harnesses are wrapped with cold-resistant and heat-resistant insulating plastic tapes. Assemble and produce according to the working environment of the automobile wiring harness.
Segmented production: In order to facilitate subsequent assembly and maintenance, automobile wiring harness manufacturers generally carry out segmented manufacturing, and connect multiple segments of wiring harnesses together through connectors. In automotive applications, the fewer segments of the wiring harness, the better, to avoid over too much, resulting in a pressure drop, resulting in poor contact. At the same time, segmented production can timely detect defective products such as poor contact, poor insulation, and assembly errors.
Judgment of poor wiring harness contact: Most of the reason is in the connector. When a fault occurs, the electrical equipment does not work properly. The fault of the connector can be eliminated by checking the test tool by turning on the power of the electrical equipment.
Do not pull the wiring harness too tightly when assembling the automobile wiring harness (especially the horizontal wiring harness), to avoid the loose position of the fixed point of the wiring harness when the vehicle is bumpy, resulting in a sudden increase in the distance between the two fixed points, resulting in poor contact between the internal contacts of the wiring harness and wire parameters. Change or even pull off the wire.
Connectors with the same model and color are not arranged to avoid defective products caused by MIS insertion during the assembly process. After the wiring harness is assembled, there needs to be enough clearance to ensure that it will not be overwhelmed or tripped over by other components. Avoid ground faults caused by pinching, abrasion, or cracking of the wiring harness insulation.
Automobile wiring harness assembly features
The degree of automation of the automobile wiring harness assembly line is relatively low, and many processes need to be completed manually, so the automobile wiring harness manufacturer needs sufficient labor during assembly. It is inevitable that there will be certain fluctuations in the wiring harness assembly.
This situation is often encountered in automobile wiring harness manufacturing plants. The assembly task is not completed under a certain production environment. After this situation occurs, it will not only affect the assembly efficiency but also consume time and effort, resulting in economic losses. Therefore, the rational distribution of each process is necessary.