S-7000E Eyelet & PIN Auto Insertion Machine for THT Assembly

On a mixed SMT/THT line, the eyelet and PIN insertion station is where automation usually stops and a person takes over. Hand-pressing an eyelet into a plastic carrier or a metal PIN into a power board looks simple until one over-insertion cracks the housing or one under-insertion walks out in the field. Manual force is never the same twice. The S-7000E Eyelet & PIN Auto Insertion Machine replaces that variable hand station with a servo that measures and controls the force on every pin.

The cost you haven't named

Manual eyelet and PIN insertion is treated as a low-skill station, but it carries three costs that show up later — in scrap, warranty and line balance.

• Inconsistent insertion force. A person presses harder or softer across a shift; over-insertion cracks plastic housings and under-insertion fails retention-force standards.
• Labor locked to a bottleneck. A manual station typically needs 2–4 operators per shift for medium volume, and it gates the whole THT section that feeds wave soldering.
• Field returns from loose pins. Eyelet pins or terminals that walk out after assembly generate warranty claims and can trigger customer containment actions under IATF 16949.
• No per-pin record. Manual insertion leaves no timestamped, barcoded log, so an audit cannot trace which force was applied to which joint.

The Force-Controlled Insertion Audit

Before specifying an eyelet/PIN inserter, frame the decision as a repeatable audit. Call it the Force-Controlled Insertion Audit.

1. Map the insertion geometries. List every eyelet pin, metal PIN, terminal and cylindrical connector by diameter, substrate and carrier so the machine range and tooling are matched up front.

2. Define the force window. Set the acceptable insertion-force band for each part family so over- and under-insertion are flagged before the substrate is damaged or the pin is loose.

3. Plan the vision and changeover. Decide PC-based vision alignment and quick-change tooling so product variants switch in minutes instead of stopping the line for recalibration.

4. Set the traceability target. State that every insertion is logged with timestamp and barcode, giving audit-ready output for IPC Class 3 and IATF 16949 reviews.

The vehicle: S-7000E Eyelet & PIN Auto Insertion Machine

The framework above maps directly onto how the S-7000E is deployed on a real THT line.

• Map the insertion geometries → 1.3–4.0 mm PIN range. The machine handles eyelet pins, metal PINs/terminals and cylindrical connectors in the 1.3–4.0 mm diameter band, with custom tooling extending the range for specific part geometries.
• Define the force window → servo closed-loop force monitoring. Each insertion runs a closed-loop force profile: the servo measures resistance in real time and adjusts pressure to stay inside the programmed window, flagging and stopping on out-of-range force.
• Plan the vision and changeover → PC vision and sub-2-minute tooling. PC-based vision with teach-in programming handles alignment, while quick-change tooling enables changeover under two minutes between variants by recalling stored recipes.
• Set the traceability target → per-insertion logging. Every insertion is logged, timestamped and barcoded, with MES-ready data output for factory-wide traceability and audit documentation.

Specification note: exact CPH, force range, PIN diameter limits, feeder type, ESD specification and custom-nozzle lead time should be confirmed at quotation, because they depend on your part mix, substrate and line layout rather than a single default.

Specifications

| Parameter | Value |

| Machine type | Servo-driven eyelet & PIN auto insertion |

| Insertion force control | Closed-loop servo, real-time monitoring |

| Component range | Eyelet pins, metal PINs, terminals, cylindrical connectors |

| PIN diameter | 1.3–4.0 mm typical (custom tooling extends) |

| Throughput | 12,000 CPH with PC-based vision alignment |

| Changeover | Sub-2-minute quick-change tooling, stored recipes |

| Substrate support | PCB, plastic carriers, hybrid metal-plastic assemblies |

| Traceability | Per-insertion log: timestamp + barcode, MES-ready |

| Defect target | <500 PPM (application-specific, confirmed at quotation) |

| ESD compliance | ANSI/ESD S20.20, IEC 61340-5-1 |

| Custom nozzle lead time | 2–3 weeks from Shenzhen |

The loop: re-audit every product intro

Insertion needs change with every new automotive or power-board program. Build a loop: after each new product introduction, repeat the Force-Controlled Insertion Audit, compare the force-window results and defect data against the previous run, and review the per-insertion logs with your quality lead. If a new PIN geometry enters the line, re-map the range and re-teach the vision recipe before ramping. The loop is what keeps the S-7000E's force control meaningful instead of a setting nobody checks after commissioning.

Your next step

Send us your eyelet and PIN drawings, substrate types and current defect rate on manual insertion. We will return a review outlining where the S-7000E fits, what force window and tooling to specify, and what to confirm at quotation. Reach Jason at jasonwu@smthelp.com or on WhatsApp +86 13602562576.

FAQ

What component types can the S-7000E insert?

Eyelet pins, metal PINs/terminals, cylindrical connectors and similar through-hole parts in the 1.3–4.0 mm range; custom tooling extends this for specific applications.

How does servo force control prevent substrate damage?

Each cycle runs a closed-loop force profile; the servo measures resistance and adjusts pressure to the programmed window, flagging or stopping on out-of-range force before damage occurs.

What substrates does it support beyond PCBs?

It supports injection-molded plastic carriers, hybrid metal-plastic assemblies and non-rectangular substrates with custom fixture tooling, relevant for automotive busbar and connector work.

How fast is changeover between variants?

Quick-change tooling enables sub-2-minute changeover for most configurations; PC-based vision stores recipes per variant and recalls them without mechanical recalibration.

Can it integrate with our MES system?

Yes. Every insertion is logged with timestamp and barcode in an industry-standard format suitable for MES integration and audit documentation.

Jason Wu

Founder & CEO, Southern Machinery (Shenzhen Southern Machinery Sales and Service Co., Ltd.)

Email: jasonwu@smthelp.com / info@smthelp.com

WhatsApp: +86 13602562576

Catalog & manuals: file.autoinsertion.com | Machine photos: ph.smthelp.com

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