S7040 Odd Form Insertion Machine with Bulk Feeder: Automated THT Assembly for Smart EMS Factories

By Southern Machinery | Shenzhen, China | Founded 2011 | 237+ global customers served

What Is This Machine Used For?

The S7040 odd-form insertion machine is a THT (through-hole technology) auto-insertion platform that automatically places non-standard, odd-form components onto PCBs. It is designed for components that standard radial or axial inserters cannot handle efficiently — such as transformers, relays, connectors, large electrolytic capacitors, MOS devices, and other three-dimensional parts with unusual lead configurations.

Where a manual line relies on operators to pick, orient, insert, and clinch each odd-form component by hand, the S7040 performs the same sequence automatically. The result is repeatable insertion quality, lower dependency on skilled labor, and a measurable reduction in the manual-insertion loss that typically appears as mis-inserted parts, rework, and scrap.

Southern Machinery's demonstration videos for the S7040 emphasize two benefits: a new-design bulk feeder that simplifies odd-form component feeding, and high odd-form automation throughput that shortens cycle times and removes the manual bottleneck from THT lines.

Why Automate Odd-Form Insertion?

The Manual Insertion Problem

Odd-form components are the most labor-intensive part of THT assembly. Each part is different in shape, weight, and lead geometry, so operators must slow down, check polarity and orientation, and insert with care. At production volume this creates:

Inconsistent quality — bent leads, tilted parts, wrong orientation, missed components
High labor cost — one or more operators per insertion station, per shift
Rework and scrap — misplaced parts need desoldering or board rejection
Line imbalance — manual odd-form insertion becomes the capacity gate for the whole line

How the S7040 Solves It

The S7040 replaces the manual station with an automated insertion cycle: component feeding (including the new-design bulk feeder), positioning, insertion, and clinching. Because the cycle is programmable, quality no longer depends on operator skill or fatigue. Changeover between products is handled through programming rather than retraining operators, which matters for high-mix EMS and ODM environments.

Typical Application Scenarios

Power boards — inserting transformers, relays, and connectors on power supply PCBs
Mobile charger and adapter assembly — combined with radial insertion in compact charger lines
White goods / appliance control boards — relays, large capacitors, and terminal components
Automotive electronics — vibration-resistant clinched insertion of connectors and relays
Industrial control and instrumentation — odd-form parts on higher-mix, lower-volume boards
LED driver and lighting ballast PCBs — transformers, electrolytics, and bridge rectifiers

Southern Machinery application photos show the S7040 deployed in a mobile charger line alongside the S3010A radial inserter, and in a 40-station inline configuration that combines axial, radial, terminal, and odd-form insertion with a loader — evidence that the S7040 is engineered to work as part of a full THT line, not as an island.

How It Fits Into a Complete PCB Assembly Line

A full PCB assembly line usually flows from SMT to THT:

SMT side — stencil printing, Pick and Place, Reflow Oven, optional SPI and AOI
THT side — axial insertion (S4000), radial insertion (S3010A / S3000), odd-form insertion (S7040), then Wave Soldering or selective soldering
Post-soldering — inline lead cutting, PCBA cleaning, and depaneling

The S7040 is positioned on the THT side, typically fed by a magazine loader (Southern Machinery shows it with the SLD250 magazine loader/unloader) and linked to downstream soldering with SMEMA-style conveyor handshakes. Because odd-form parts are usually the last components inserted before soldering, the S7040's role is to make that final manual step automatic so the line can run with fewer operators and fewer defects.

Key Selection Parameters to Confirm

Since odd-form automation is highly application-specific, Southern Machinery recommends confirming the following before configuration — these parameters determine which feeders, grippers, and clinch options your S7040 setup needs:

PCB size range — maximum and minimum board dimensions, panelization format, and board thickness
Component list — exact odd-form components (connectors, relays, transformers, capacitors), their dimensions, weights, and lead pitches
Lead configuration — straight leads, bent leads, clinch direction and angle required for solderability
Feeding method — bulk, tube, tray, or tape; the new-design bulk feeder suits bulk-packed components
Target throughput — required CPH based on your production volume; note that achievable CPH depends on component mix and PCB layout
Board loading — inline conveyor, magazine loader, or manual load
Line integration — SMEMA compatibility, MES connectivity, and existing conveyor height
Changeover frequency — how often you switch products, which drives feeder and tooling design

Southern Machinery will run component and board feasibility checks so the configuration matches your actual product mix rather than a generic spec.

ROI, Quality, and Capacity Considerations

Labor reduction — each automated odd-form station replaces the equivalent of one or more manual insertion operators per shift
Quality consistency — programmable insertion and clinching reduce the rework caused by manual handling
Capacity — removing the manual bottleneck increases effective line throughput without adding headcount
Changeover speed — product switching becomes a programming task, which improves OEE in high-mix factories
Scrap reduction — fewer mis-inserted and damaged components lower material cost and support zero-e-waste goals

For an EMS or ODM evaluating THT automation, the S7040 is best assessed against your actual board set: send your BOM and PCB files, and Southern Machinery can estimate the station count, feeder configuration, and expected cycle time for your mix.

FAQ

What is an odd-form insertion machine used for?

An odd-form insertion machine automatically places non-standard THT components — transformers, relays, connectors, large electrolytic capacitors, and other parts with unusual shapes or lead configurations — onto PCBs, replacing manual insertion and improving consistency and throughput.

What components can the S7040 handle?

The S7040 targets odd-form components that standard radial or axial inserters cannot place efficiently, including transformers, relays, connectors, MOS devices, and large electrolytic capacitors. Exact capability depends on component geometry and lead configuration, so feasibility should be confirmed with your component list.

Can the S7040 integrate with an existing SMT line?

Yes. The S7040 is designed to work on the THT side of a full PCB assembly line, typically fed by a magazine loader and linked to Wave Soldering or selective soldering downstream. Southern Machinery also builds multi-station inline configurations combining axial, radial, terminal, and odd-form insertion.

Does the S7040 support bulk feeding of components?

Yes. The S7040 is demonstrated with a new-design bulk feeder that simplifies feeding of bulk-packed odd-form components, reducing the need for manual tray or tube loading.

Is the S7040 suitable for high-mix, low-volume production?

It is well suited to higher-mix environments because changeover is driven by programming and tooling rather than operator retraining. Southern Machinery can tailor the feeder and tooling configuration to your product changeover frequency.

How do I get a configuration for my PCB?

Contact Southern Machinery with your PCB files, BOM, and target volume. The team will recommend the station count, feeders, and tooling, and can arrange component and board feasibility testing before you commit.

Get a Configuration Proposal

Southern Machinery (Shenzhen, China, founded 2011) provides SMT and THT PCB assembly automation equipment and full-line solutions to more than 237 customers worldwide. For S7040 odd-form insertion, full THT lines, or complete SMT + THT + Wave Soldering + board handling + inspection solutions:

Email: jasonwu@smthelp.com (Jason Wu, Co-Founder / Sales & Service Engineer)
Phone / WhatsApp: +86 13602562576
Website: https://www.smthelp.com
Product catalogs and PDFs: https://file.autoinsertion.com
Machine photo albums: https://ph.smthelp.com
Videos: search "Auto+Insertion" on YouTube

Visit the file portal to browse catalogs, and the photo site to see S7040 and other Southern Machinery machines in real factory installations.