L Type PCB Loader and Unloader2023-08-30T10:45:30+00:00

LD 250L/330L/390L L-type PCB Loader Unloader


  • PLC control system

  • SMEMA compatible

  • Different sizes available upon request

  • Wear-resistant cable with long service life

  • User friendly ‘soft touch’ LED control panel

  • Owning automatic diagnosing fault and display code function

  • With redesigning the standard type, L type can load the PCB in a 90 degree angle, which shorten the length of a SMT line.

Customization is always available, please mark down your need when contact us.

What are PCB Loaders and Unloaders?

PCB loaders and unloaders are automation equipment designed to pick up printed circuit boards and accurately orient, transport, and position them for assembly processes. They act as interfaces between various production line stages, handling the boards gently to prevent damage.

Loaders feed the boards into assembly machines, while unloaders remove finished boards post-production. This eliminates the need for manual loading/unloading, improving efficiency.

Importance of Efficient PCB Loading and Unloading

Manual loading/unloading of PCBs can be time-consuming, risky, and prone to human error. Automated systems like L type loaders/unloaders provide:

Increased production speed and reduced assembly time

Improved precision and consistency in PCB handling

Reduced risk of board damage from mishandling

Lower long-term costs by cutting labor expenses

Safer working environment by minimizing direct human contact

As demand grows for electronic goods, using reliable automated PCB loaders/unloaders is key for scalable and efficient manufacturing.

Types of PCBs Used in Electronic Devices

Some common PCB types used in products include:

Single-sided: Copper traces on one side

Double-sided: Traces on both sides

Multilayer: Multiple copper layers laminated together

Rigid PCBs: Standard inflexible boards

Flex PCBs: Flexible boards made of thin insulating material

Rigid-flex PCBs: Combination of rigid and flexible boards

L type loaders/unloaders can handle different PCB types of varying sizes. Their versatility supports diverse electronic assembly applications.

How L Type PCB Loaders and Unloaders Work

L type PCB loaders/unloaders get their distinctive name from the L-shaped transport path. Boards follow this path as they are loaded from a stack to the assembly machine, and unloaded from the machine back into organized stacks.

The key components of L type loaders/unloaders include:

Infeed Mechanism:

Orients boards from stacks and feeds them onto conveyor


Transports PCBs along the L path to/from assembly system

Outfeed Mechanism:

Removes assembled boards and stacks them

Vision System:

Optically scans boards to verify positioning

System Control:

PLC automates transport and handling motions

This smooth automated sequence minimizes production bottlenecks and damage.

Advantages of L Type Systems

Compared to inline PCB loaders, L type loaders offer some unique advantages:

Compact footprint fits easily into production environments

Flexible loading direction; boards can be fed vertically or horizontally

Allows boards to be unloaded on the same side they are loaded

Gentler 90° turns prevent board flexing and damage

Dual loading capability for higher throughput

These benefits make L type loaders ideal for mid to high-volume PCB loading/unloading applications.

In-Feed Mechanisms for L Type Loaders

L type loaders use different in-feed mechanisms to pick boards from stacks and orient them for transport:

Friction Feed:

Separates boards using rubber rollers

Belt Feed:

Flattens stack and feeds boards via a belt

Vacuum Feed:

Uses vacuum suction cups to grip boards

Mechanical Gripper:

Clamps onto boards for feeding

Each has advantages based on PCB type, size, and production environment.

Key Components of L Type PCB Unloaders

After proceeding through assembly processes, PCB unloaders are vital for output organization. Components like:

Outfeed Mechanisms:

Stacks finished boards neatly and orderly

Conveyor Belts:

Safely transports boards after processing

Reject Systems:

Removes defective boards from production line

ESD Protection:

Prevents electrostatic discharge damage

This allows easy operator access and minimum downtime between production cycles.

Benefits of L Type PCB Loaders and Unloaders

Automating PCB loading & unloading with L type systems provides manifold benefits:

Increased Efficiency:

Faster loading/unloading improves production throughput

Reduced Labor Costs:

Less manual work lowers long-term overhead

Enhanced Precision:

Automated handling minimizes errors


Adjustable components accommodate varying PCB types

Simplified Operation:

Easy-to-use control interface

Compact Size:

Saves floor space with smaller footprint

Quality Control:

Vision systems perform optical inspection

Minimized Waste:

Lower damage rate increases yields

Workplace Safety:

Reduces direct operator contact with machinery

These advantages translate to improved productivity, lower costs, and better end products.

Best Practices for Operating L Type Loaders/Unloaders

To leverage the full potential of L type PCB loaders/unloaders, manufacturers should follow these best practices:

Perform regular preventive maintenance and cleaning

Inspect key parts like grippers for signs of wear

Make sure vision systems are calibrated properly

Adjust separator pressure, vacuum suction etc. for different PCB types

Allow only trained personnel to operate the equipment

Follow recommended procedures for clearing jams/errors

Institute safety measures like emergency stops and guards

Optimize loading/unloading workflow to maximize throughput

Proper usage guidelines will maximize equipment lifetime and performance.

Choosing the Right L Type PCB Loader/Unloader

Consider the following factors when selecting an L type loader/unloader:

Production Volume:

Match equipment capacity to volume needs

PCB Types and Sizes:

Ensure compatibility with boards used

Line Integration:

Loader/unloader should fit assembly configuration

Equipment Footprint:

Consider floor space constraints

Control Interface:

Equipment must have easy operator control

Future Expansion:

Select scalable loader/unloader that supports growth


Balance throughput performance and cost

After-sales Support:

Manufacturer should provide maintenance support

Thoroughly evaluating key criteria will help identify the optimal loader/unloader solution.

Tips for Maximizing Productivity

To get the most out of L type PCB loaders/unloaders:

Strategically place equipment near production lines

Implement efficient workflows between loading/unloading stages

Leverage automation capabilities for high-volume throughput

Regularly inspect equipment and perform maintenance

Quickly fix minor issues before they cause downtime

Train employees on proper operational procedures

Continuously improve processes using data insights

Adopt smart factory practices for maximum integration

Optimizing the entire production environment is key for maximum gains.

Common Challenges and Solutions

Some common challenges with solutions include:

Misaligned Boards : Use vision system for alignment checks and adjust in-feed method.

Jamming Issues : Check for obstructions along transport path; increase separator gap.

Gripping Problems : Confirm gripper mechanism is clean/undamaged; adjust pressure as needed.

Vision Errors : Calibrate and clean cameras regularly; ensure unobstructed view.

Software Glitches : Restart controller; upgrade to latest stable software version.

Excess Vibration : Tighten conveyor belt; lubricate bearings; inspect for worn parts.

Promptly addressing any problems is crucial for minimizing downtime.

Safety Measures and Precautions

L type loaders/unloaders introduce some potential safety concerns:

Pinch hazards at grippers or conveyor access points

Collision impacts from moving equipment components

Electric shock hazards from improper maintenance

Following safety measures can help mitigate risks:

Install physical guards and barriers around pinch points

Ensure interlocks that disable motion when doors open

Post warning labels near hazardous areas

Allow only qualified personnel to service electrical components

Implement an emergency stop button within operator reach

Provide personnel with applicable PPE (safety glasses, gloves, etc.)

Develop detailed procedures for safe shutdown, isolation, and lockout

Prioritizing safety protects both employees and equipment.

Case Studies of Successful Implementations

Company A

A PCB manufacturer integrated L type loaders/unloaders into a high-volume SMT assembly line. This improved line efficiency by 27% and reduced loading labor by 50%.

Company B

By automating their PCB loading process with L type loaders, they were able to reassign personnel to more value-added tasks. First-pass quality yield improved by over 20% after implementing the new loaders.

Company C

A medical device maker needed to expand PCB loading capacity for a new product line. Integrating dual-infeed L loaders boosted their hourly throughput by 35 boards.

These real-world examples highlight the tangible benefits of L type loaders/unloaders.


Specification of LD 250L/330L/390L L-type PCB Loader Unloader

DescriptionLoading and unloading of PCBs
Number of magazineUpper conveyor: 1 magazine
lower conveyor: 1 magazine
PCB feed timeApprox. 6 seconds (support customization)
Magazine replace timeApprox. 30 seconds (support customization)
Indexing pitch10, 20, 30, 40mm (support customization)
Power supplyAC 110/220 volts; single phase
PowerMax. 300VA
Air pressure and consumption4-6 bar; max. 10ltr/min
Transport height900 +/- 20mm (support customization)
Transport directionL to R/R to L
PCB thicknessMin. 0.6mm
Max. PCB storage capacity400 pcs (0.6mm thickness board)

Dimension of LD 250L/330L/390L L-type PCB Loader Unloader

PCB board size
(LxW, mm)
Magazine size


Automated L type PCB loaders and unloaders deliver immense benefits for electronics manufacturers including increased productivity, reduced labor, and enhanced quality control. Their compact size, flexible configurations, and reliable performance make them a smart investment for PCB assembly processes. However, proper selection, operational best practices, troubleshooting, and safety measures are key to maximize their utility. Overall, L type loaders/unloaders represent a key step toward more efficient and advanced electronics manufacturing.


Is operator training needed for these systems?2023-08-30T10:32:47+00:00

Proper training on equipment operation, workflow, and safety is highly recommended before use.

Can these loaders handle fragile PCB components?2023-08-30T10:32:08+00:00

Yes, proper adjustment of separator pressure and gripper force allows safe transport of fragile PCBs.

Are there safety risks associated with L type loaders?2023-08-30T10:31:17+00:00

Potential risks include pinch points and electric shocks, so appropriate precautions are essential.

What maintenance is required on L type loaders?2023-08-30T10:30:44+00:00

Regular inspections, belt tensioning, gripper checks, vision system calibration, and control software updates.

How does the vision system help with quality control?2023-08-30T10:30:10+00:00

It optically scans PCBs to verify positioning and alignment before loading. This prevents insertion errors.

What should be considered when selecting a loader model?2023-08-30T10:29:35+00:00

Key factors include production volumes, board types/sizes, line configuration, control features, and budget.

Are these suitable for high-volume SMT production?2023-08-30T10:29:04+00:00

Yes, dual in-feed design supports high-volume throughput needs.

Can L loaders accommodate different board sizes?2023-08-30T10:28:32+00:00

Yes, adjustable separators and grippers allow L loaders to handle different PCB sizes.

What are the key differences between L vs inline loaders?2023-08-30T10:27:55+00:00

L type loaders have a compact footprint and flexible loading direction, while inline loaders feed boards straight through.

How do L type loaders/unloaders improve PCB assembly?2023-08-30T10:27:20+00:00

They automate the transport of PCBs, eliminating manual handling. This increases throughput, precision, and productivity.

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