JMK wire harness detection modules provide in-process monitoring for cutting, stripping, terminal crimping, waterproof seal insertion and connector housing assembly.
Available inspection technologies include crimp force monitoring, CCD visual inspection, wire and terminal presence detection, cutting-length detection and digital insertion force measurement. These functions can be incorporated into selected JMK machines or evaluated for customized wire harness production systems.
Wire harness defects can occur at several points in the production sequence. A wire may be cut to the wrong length, conductor strands may be damaged during stripping, a terminal may be positioned incorrectly or a waterproof seal may be missing.
Inspection modules check selected process conditions before the finished wire moves to the next production stage. This helps manufacturers identify process changes earlier and reduces the risk of defective parts continuing through downstream assembly.
Available detection functions may include:
Wire presence detection
Terminal presence detection
Cutting-length detection
Stripping inspection
Crimp force monitoring
CCD terminal inspection
Waterproof seal inspection
Connector position inspection
Digital insertion force measurement
Processing fault alarms
Defective-product separation
The inspection items should be selected according to the most important failure risks of the actual wire harness.
A crimp force monitoring system records the force curve generated during each terminal crimping stroke. After reference limits have been established using approved samples, production curves are compared with the acceptable process range.
CFM may help detect significant changes associated with:
Missing wire
Incomplete wire insertion
Missing conductor strands
Incorrect terminal feeding
Double-fed terminals
Abnormal terminal deformation
Tooling wear or damage
Changes in the wire and terminal combination
Significant crimping process variation
The result depends on the wire size, terminal geometry and force difference between an acceptable and defective crimp. Small defects may not always produce a sufficiently different force curve.
CFM therefore supports process monitoring but should not be presented as a universal defect-detection method.
A CCD visual inspection system uses cameras, controlled lighting and image-processing software to inspect visible product characteristics without direct contact.
Depending on camera placement and product design, a vision system may check:
Wire stripping length
Exposed conductor position
Flared or displaced strands
Insulation position
Terminal presence
Terminal orientation
Terminal position
Waterproof seal presence
Seal position
Wire color
Connector housing orientation
Terminal insertion position
The inspection scope must be defined using actual conforming and defective samples. Camera resolution, lighting, component color, inspection angle and defect size all affect detection reliability.
Cutting and stripping defects can affect every downstream process. Excessive stripping depth may damage conductor strands, while insufficient stripping can prevent correct terminal crimping.
Inspection functions can be configured to monitor:
Wire presence
Cutting length
Front stripping length
Rear stripping length
Exposed conductor position
Insulation residue
Visible strand damage
Wire color
Not every stripping defect can be inspected at the same station. The position of the camera and the wire presentation method must be planned around the required inspection item.
Terminal crimp quality involves both visible and internal characteristics. A vision system can inspect the external position or appearance, while a crimp force monitor evaluates changes during the pressing cycle.
An integrated inspection arrangement may combine:
Terminal presence detection
Terminal orientation checking
Wire insertion position checking
CCD appearance inspection
Crimp force curve monitoring
Crimping error alarms
Defective-product separation
These checks do not replace dimensional measurement, pull-force testing or cross-section analysis. Those methods should remain part of the quality-control plan according to the terminal and application requirements.
Waterproof seals must be placed at the correct position before terminal crimping and connector assembly.
A suitable inspection module may check:
Seal presence
Seal color
Seal orientation
Seal position on the wire
Visible seal damage
Multiple or missing seals
The seal dimensions, material flexibility and color contrast determine whether each characteristic can be identified reliably through machine vision.
For automated processing, the inspection module can be coordinated with a vibratory bowl feeding and seal insertion station.
Connector assembly defects may include incorrect terminal orientation, insertion into the wrong cavity or incomplete seating.
Selected JMK equipment can combine vision-guided positioning with digital insertion force measurement. Depending on the connector and system configuration, the process may monitor:
Connector housing presence
Connector orientation
Programmed cavity position
Terminal alignment
Terminal insertion position
Insertion force change
Material or processing alarms
Digital insertion force measurement records force during insertion. It should not be described as a pull-back test unless the equipment includes a separate reverse-force verification cycle.
When a configured detection value falls outside the approved range, the machine can generate an alarm and prevent the affected wire from being mixed with accepted products.
Depending on the equipment, the response may include:
Stopping the machine
Displaying a fault message
Recording the alarm
Marking the product as defective
Moving the product to a reject area
Requiring operator confirmation
Preventing the next processing step
Reject handling should be designed so that an unverified product cannot be returned to accepted production without authorization.
Selected machines can store processing parameters, inspection results, fault records or production quantities. Some configurations also support barcode scanning or MES connectivity.
Possible production records include:
Machine program
Product or batch number
Wire and terminal specification
Crimp force curve
Vision inspection result
Alarm type
Accepted and rejected quantities
Processing time
Operator or workstation information
MES integration is project-specific. The required communication protocol, database fields, barcode rules and retention period must be confirmed before system development.
Inline inspection monitors the production process, but the finished connection may still require offline validation.
A complete quality-control plan may include:
Crimp height measurement
Crimp width measurement
Pull-force testing
Crimp cross-section analysis
Electrical resistance testing
Continuity testing
Insulation testing
Environmental or sealing tests
The required methods depend on the harness application and customer standard. JMK inspection modules should be configured as part of this wider quality plan.
Before choosing a wire harness inspection system, please provide:
Wire specifications
Terminal drawings and samples
Waterproof seal samples
Connector housing samples
Approved finished products
Representative defective samples
Defect types to be detected
Minimum defect dimensions
Required cycle time
Acceptance criteria
Reject-handling requirements
Barcode or MES requirements
Data storage requirements
Providing actual defective samples is especially important because the inspection system must distinguish the target defect from normal product variation.
Wire harness detection modules can be integrated into equipment for:
Automotive wiring harnesses
New energy vehicle systems
Energy storage equipment
Household appliances
Industrial control equipment
Electrical cabinets
Consumer electronics
Photovoltaic systems
Telecommunications equipment
FAKRA and Ethernet cable assemblies
The required inspection method depends on the process and defect risk rather than the industry name alone.
JMK develops inspection functions together with wire feeding, cutting, stripping, crimping, seal insertion and connector assembly equipment. This allows the inspection station to be planned around the actual product position and material-transfer process.
Our team can evaluate whether the required inspection should be integrated into a complete machine, added as a dedicated station or developed as part of a customized wire harness production line.
Learn more about our wire harness processing modules.
It is an in-process inspection unit used to monitor selected conditions during wire cutting, stripping, crimping, seal insertion or connector assembly.
CFM can identify significant changes in the crimp force curve caused by certain material, feeding, tooling or process abnormalities. Its capability depends on the wire and terminal combination.
No. Some defects produce only small curve changes. CFM should be used with other inspection and validation methods.
Depending on the system, it may inspect stripping length, visible conductor condition, terminal position, seal presence, wire color or connector orientation.
A dedicated online pull-force testing module is not currently shown on the website. Pull-force testing should be specified separately if required.
Selected machines can trigger alarms and separate products identified as defective. The reject-handling method depends on the machine configuration.
Selected equipment supports MES connectivity. The required communication protocol and data fields must be confirmed during project planning.
Please provide approved samples together with representative defective samples covering every defect type that the system is expected to identify.
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