In electronic sensor manufacturing, automated assembly solutions are not simply created by placing a welding machine, a vision system, and several transfer mechanisms next to one another. This Single-End Wire Welding and Assembly Line case starts with Wire Cutting and Board Loading, then connects Sleeve Assembly, Single-End Welding, Front/Back CCD Inspection, Tube Pushing, Heat Forming, Bending, Shell Pressing, and final Collection into one continuous process. The confirmed target capacity is 600–800 PCS/H, with 3 operators, and the control system uses HMI + PLC.
The main challenge is that the product consists of relatively small Wire, Sleeve, and Welding Components whose positions can easily shift. Any positional deviation created in an upstream process can continue into the later welding, inspection, and forming steps. The line therefore needs to keep the relative position of these parts under control across several very different mechanical operations instead of relying on each downstream station to correct the previous station’s deviation again.
Robotlyne’s Electronics Assembly Automation covers Soldering, Testing, Inspection, Encapsulation, as well as fully automated, semi-automated, and standalone workstations, making it relevant to similar multi-process electronic sensor assembly lines.
Once the Wire Is Loaded onto the Board, the Processes Can No Longer Be Treated Separately
The front end of the line begins with Single-Wire Cutting and Board Loading.
The Wire Feeding Rack supplies the wire. After Straightening and Cutting, the wire is placed onto a Carrier Board and fixed with Tape Application. A Visual Inspection step is also included at the front end to confirm the wire condition after board loading.
At this point, the Carrier Board has already become the basic positioning reference for the downstream process.
The product then enters the Sleeve Section.
A Sleeve Feeding System supplies another component, and Transfer Tooling moves the Sleeve into the assembly position. The Sleeve Mold in the case can process 2 Sleeves per Cycle.
The machine is now handling more than just a wire.
The Wire has its own position on the Board, while the Sleeve must also reach the correct location relative to that Wire. When the product continues into the Single-End Welding Head Section, a third type of small component is introduced.
The Welding Head Components are automatically supplied by a Vibratory Bowl Feeding Group, and the Welding Module then positions and joins the component with the Wire Assembly.
The actual product sequence is therefore closer to:
Wire Position → Carrier Board Position → Sleeve Position → Welding Component Position → Final Welded Assembly
Each earlier step establishes the conditions required by the next one.
If the Wire shifts during board loading, the Sleeve Assembly may receive a different incoming position.
If the Sleeve then also moves relative to the Wire, the Welding Module will eventually receive a semi-finished product whose geometry has already changed.
For this type of electronic sensor assembly line, much of the automation stability is established before the Welding Head moves.
This is also why the project includes Wire Straightening, Board Transfer, Tape Application, Sleeve Tooling, and Component Feeding. These are not peripheral mechanisms around the welding machine. They are all preparing the same Welded Assembly.
CCD Inspection Comes Before Tube Pushing and Heat Forming
After welding, the product does not move directly into the next forming process.
The case places Front-Side and Back-Side CCD Inspection immediately after Single-End Welding. Only after the two-sided visual inspection does the product continue into Tube Pushing, Heat Forming, and finally Bending and Shell Pressing.
This sequence matters because the later steps begin to change the physical state of the product.
Tube Pushing adds the tube assembly.
Heat Forming changes the product through thermal forming.
The final stage then includes Bending and Shell Pressing.
If a welding defect or missing component is only discovered after these steps, an NG product has already consumed additional processing time, tube material, heat treatment, and mechanical operations.
The CCD Inspection is therefore positioned at a very specific quality-control point:
Welding is complete
but:
Downstream Forming has not yet started
The case also makes this logic clear: Front/Back Visual Inspection is performed before Tube Pushing, Heat Forming, and Final Pressing so defects or missing components can be identified before additional processing value is added.
This arrangement also places demands on line takt.
The CCD station is not an offline sampling station.
After welding, products still need to pass continuously through two-sided inspection before entering downstream forming, so the vision station must keep pace with the line’s 600–800 PCS/H target.
The case does not provide single-image acquisition time, image-processing time, or NG rejection time, so the CCD station’s individual Cycle Time cannot be calculated from the available information. What can be confirmed is that it is part of the main production flow rather than a separate offline QC station.
If additional visual inspection is introduced later—for example, Welding Position, Missing Component, Sleeve Position, or Forming Defect—the inspection position should not be selected simply by asking whether a camera can see the feature.
It is also necessary to decide whether the defect can only be evaluated:
after welding
or:
after heat forming
Some defects only appear after a certain process is complete, while others should be stopped as early as possible.
The current Front/Back CCD Station reflects this sequence logic: confirm the current semi-finished product first, then allow it to continue into deeper processing.
The 600–800 PCS/H Target Comes with a Practical Changeover Boundary
The case confirms a Working Capacity of:
600–800 PCS/H
with:
3 operators
It also clearly states that:
When changing the assembly product, all Fixtures need to be replaced and the relevant Components need to be adjusted.
Incoming Material Dimensions also need to remain within the corresponding Tolerance Range.
This condition defines the flexibility boundary of the automated assembly solution.
From a control perspective, many machine parameters may appear adjustable through the HMI or PLC.
Wire Cutting Length can be changed.
Some cylinder positions and motion parameters can also be adjusted.
But once a product geometry change affects the:
- Carrier Board;
- Sleeve Mold;
- Welding Position;
- Transfer Tooling;
- Forming Fixture;
- Pressing Fixture;
changeover is no longer just a matter of selecting another Recipe.
Mechanical tooling must change as well.
The line is therefore better understood as:
an integrated system built around a defined family of product structures, with corresponding variants supported through fixture changes
rather than:
a line that can run any electronic sensor size with zero mechanical changeover.
This distinction matters during project planning.
If a manufacturer runs only two or three stable product models per year, replacing a complete set of Fixtures may be entirely acceptable because most production time is still spent in long, continuous batches.
If product variants change frequently every day and their dimensions differ significantly, Changeover Time, Fixture Storage, Fixture Identification, and parameter adjustment can become production issues of their own.
For similar projects, it is therefore useful to review Product Mix together with the target PCS/H:
How many product models are there?
How often does changeover happen each day?
How different are the Wire, Sleeve, Welding Component, and Shell geometries between models?
Which Fixtures can be shared?
Which Fixtures must be replaced as a complete set?
These answers directly influence whether the automation line should be designed as a highly dedicated production system or whether additional investment in Flexible Tooling is justified.
The current case provides enough information to define the basic production target of 600–800 PCS/H with 3 operators, but it does not provide the actual changeover time or indicate how much tooling can be shared between product variants. The impact of changeover on OEE therefore cannot be calculated from the available data.
From Wire Cutting to final Shell Pressing, this project combines several operations that could otherwise be distributed across separate machines into one continuous production route. Its value is not limited to reducing manual material handling. The line keeps the positional relationship between the Wire, Sleeve, and Welding Components under control through the upstream stages, completes welding, and then inserts a CCD quality checkpoint before Tube Pushing and Heat Forming add more processing value.
For electronic sensor automated assembly solutions that also involve wire processing, small-component feeding, welding, visual inspection, and downstream forming, it is useful to evaluate the full Process Flow, product geometry tolerances, Fixture Changeover, and target throughput together before deciding which operations should be connected into one line. Contact Robotlyne to discuss an electronic sensor assembly automation project.
