Automatic Four-Point Linkage Welding Machine

▷ Application Industry: Automotive Manufacturing

▷ Welding Workpiece: Shock Absorber Connecting Rod

Manufacturing capacity upgrades are often achieved through the optimization of individual welding processes.

As a professional welding equipment manufacturer, PDKJ always focuses on customers' actual production conditions and uses customized non-standard welding equipment to solve practical challenges on the production floor.

This case: The Automatic Four-Point Linkage Welding Machine customized by PDKJ for an automotive manufacturing customer has completed delivery and commissioning. The machine has been installed in the customer's workshop for welding shock absorber connecting rod components, providing a practical and reliable automation solution that delivers measurable production value.

Ⅰ Project Background

Customer Profile

The customer is a large domestic automotive manufacturer engaged in the R&D, manufacturing, and mass production of new-energy and conventional passenger vehicles, as well as automotive components. The company operates multiple large-scale component manufacturing lines.

Project Background

With increasing market orders, the customer planned to further expand component production capacity.

The connecting rod components require welding at four designated positions. Under the existing production conditions, the original equipment struggled to meet the quality and efficiency requirements associated with increased production capacity.

To remove this production bottleneck and improve welding consistency, the customer contacted PDKJ to develop an Automatic Four-Point Linkage Welding Machine specifically matched to the workpiece characteristics and workshop requirements.

Ⅱ Identifying the Customer's Actual Welding Challenges

After receiving the project requirements, the PDKJ technical team studied the customer's production site and analyzed the workpiece structure, existing production process, and workforce configuration.

Several practical challenges were identified:

① Difficult to Maintain Consistent Multi-Point Welding Quality

The connecting rod workpieces relied on manual positioning and clamping. Positioning deviations could lead to variations in weld location and inconsistent weld nugget size.

This resulted in fluctuating product quality and increased inspection and rework requirements.

② Complicated Processes Restricted Production Cycle Time

Multiple welding operations required repeated loading, positioning, and unloading of the workpieces.

This extended the processing time per part. When handling large-volume automotive component production, the welding process became a bottleneck that restricted overall workshop output and made it difficult to meet production expansion targets.

③ High Dependence on Manual Operation

Repeated workpiece loading, clamping, and positioning required significant manual involvement, increasing operator workload.

At the same time, welding quality was affected by differences in operator experience and skill levels. With the ongoing difficulty of recruiting skilled manufacturing workers, maintaining stable production over the long term became increasingly challenging.

Ⅲ Customized Solution: Automatic Four-Point Linkage Welding Machine

Based on the customer's workpiece dimensions, welding requirements, and production targets, PDKJ leveraged its extensive experience in customized welding equipment to design, manufacture, and commission the Automatic Four-Point Linkage Welding Machine.

The equipment was successfully delivered and put into production, with its key advantages focused on practical production requirements.

1. Four-Point Synchronized Welding for Consistent Weld Quality

The machine is equipped with a dedicated customized fixture for accurate workpiece positioning.

Four welding points can be completed simultaneously, reducing positioning errors caused by repeated manual clamping.

This helps maintain consistent weld nugget formation, reduce welding defects and rework, and meet the strict quality requirements of automotive component manufacturing.

2. Automated Process for Higher Production Efficiency

After the workpiece is loaded and positioned, the machine automatically completes the clamping, four-point welding, release, and unloading process.

By reducing intermediate manual operations, the system shortens the welding cycle and helps relieve production bottlenecks.

This makes the welding process better suited to the continuous production rhythm of automotive component manufacturing.

3. Flexible Welding Parameters for Future Compatibility

Core welding parameters such as welding current, pressure, and welding time can be adjusted through the control system.

When the workpiece undergoes minor design or version changes, the equipment can be adapted by adjusting the welding process parameters without requiring a completely new machine.

This improves equipment flexibility and extends its practical service life.

4. Designed for Long-Term Production with Simple Operation and Maintenance

As a source welding equipment manufacturer, PDKJ performs factory inspections and testing before equipment delivery to ensure reliable operation during extended production.

The human-machine interface is straightforward, allowing workshop operators to quickly learn the basic operation after simple training.

Combined with PDKJ's standardized after-sales service system, customers can also receive technical support for equipment maintenance and process parameter adjustments when required.

Ⅳ Equipment Delivery and Practical Production Value

The Automatic Four-Point Linkage Welding Machine has now completed delivery and commissioning and has officially entered regular production at the customer's workshop.

Based on production feedback, the customized welding machine has effectively improved the consistency of four-point welding for connecting rod components, simplified the production process, relieved production capacity pressure, and reduced repetitive manual operations.

The solution helps the customer achieve practical improvements in the welding process, including better quality, less rework, and higher production efficiency.

From solution design to equipment implementation, PDKJ always focuses on real-world manufacturing applications, ensuring that equipment matches actual production requirements and delivers measurable value to customers.

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Choose PDKJ and enjoy five key guarantees for worry-free cooperation:

1. Free Sample Testing – Try Before You Buy
   Test your parts first and proceed only when satisfied

2. Factory Direct Supply – Cost Savings
   No middlemen, direct factory pricing

3. Professional Technical Support – Full Guidance
   One-on-one engineering support for welding solutions

4. Full Machine Warranty – Reliable Service
   Original components with comprehensive warranty

5. Customized Solutions – Tailored to Your Needs

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Professional Services by Guangdong Pudian Automation Technology Co., Ltd.

Guangdong Pudian Automation Technology Co., Ltd.

• 20 years of expertise in resistance welding, laser welding, and automated welding equipment

• Focus on high precision, high stability, and customized solutions

• Full coverage of processes including spot welding, projection welding, seam welding, rolling welding, laser welding, and automated production lines

• One-on-one customized welding solutions based on material, thickness, and production volume

• Serving multiple industries and solving complex welding challenges

If your product requires multi-point synchronous welding, fixed-position welding, automated loading and unloading, in-line inspection, or continuous batch production—and standard equipment does not fully meet these needs—you might consider a custom-built welding machine tailored to your specific product.

PDKJ evaluates your product's specific requirements—considering factors such as welding processes, equipment configuration, fixture positioning, and automation workflows—to provide a welding solution that aligns precisely with your actual production needs.

Where there are products, there are welding needs; where there are welding needs, there's PDKJ.

Feel free to contact the PDKJ team: Free consultation on welding processes, support for product prototyping and testing, ensuring equipment selection is based on actual welding results.

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If you have welding machine requirements, please contact Ms. Zhao

E-Mail: pdkj@gd-pw.com

Phone: +86-13631765713