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PU Dispensing Machine

Min. Order: 1 Set/Sets
Model No: WD-VF4
Transportation: Ocean,Land,Air
Industrial PU Resin Dispensing Solution --See Intelligently, Dispense Perfectly   This Industrial PU Resin Dispensing Solution is primarily designed for the precise and stable automatic mixing and dispensing of PU resin, making it particularly...
Min. Order: 1 Set/Sets
Model No: WD-VF4
Transportation: Ocean,Land,Air
PU Resin Dispensing System for Lapel Pin Production --See Intelligently, Dispense Perfectly   This PU Dispensing Machine is a precision Auto Glue Dispenser designed for lapel pin production. As a specialized PU Dispenser and Automatic Doming...
Min. Order: 1 Set/Sets
Model No: WD-VF4
Transportation: Ocean,Land,Air
Automatic PU Dispensing Machine for Custom Lapel Pins --Automated Vision for Accurate Dispensing   This Automatic Doming Machine, often referred to as a PU Dispensing Machine or an Auto Glue Dispenser, is a specialized piece of equipment engineered...
The PU Dispensing Machine is an intelligent Visual Dispensing Machine with simple operation and precise glue dispensing. It is specially designed by WELDO for the problems existing in the PU Glue industry, such as large color differences, exposed base color, poor coverage, and excessive smudging. 
How to produce PU dispensing products?
Understand the PU raw materials
Understanding the characteristics of PU raw materials helps us do our work better.
There are three types of PU glue: single-component, two-component and PUR.
PU dispensing refers to applying liquid polyurethane on the surface of the product for dispensing, and forming decorative functions through natural curing / heat curing / UV curing, etc.
Products made through PU dispensing can achieve a three-dimensional effect with elasticity, anti-slip, wear resistance and scratch resistance. 
Determine product requirements
We need to first understand the conditions required for product production.
1. Confirm the size, dimensions and color of the product
2. Confirm the hardness and softness of the product
3. Confirm the engineering design of the product
4. Confirm the purpose and usage scenarios of the product
5. Select the appropriate type of PU glue
6. Design the product and create the corresponding molds 
Prepare PU raw materials
Put the A and B components of the PU glue into separate dedicated glue buckets. Check for any phenomena such as sedimentation, clumping, or impurities. If the glue is normal, it can be connected to the PU material barrel. Through settings, mix the PU glue evenly. At the same time, turn on the constant temperature device to control the temperature at 25 ± 3℃, ensuring stable production of the PU glue. 
Soldering and coloring
The operator lays the product flat on the aluminum plate, checks that the product surface is free of oil stains, no damage, and no deformation. If the product is normal, the aluminum plate can be placed on the PU dispensing machine.
Using the point-and-coloring vision system of the WELDO PU Dispensing Machine, the operator positions the product, draws the point-and-coloring path, sets the parameters, and then conducts the test.
This pu dispenser will start to apply point-and-coloring to the product according to the preset path. 
Curing and drying Choosing the appropriate curing method is beneficial for the shaping of the product and can reduce the defect rate of the product.
Natural curing: Place the product on a horizontal table for 24 hours to prevent dust from falling. Once the product has naturally dried, it is ready.
Oven curing: Place the product in the oven tray, set the curing temperature and duration, turn on the oven and wait until the curing process is complete before removing the product.
UV curing: Place the product on a horizontal surface, turn on the UV lamp, set the curing time, and ensure that the UV light evenly spreads over the product for curing.
 
Quality inspection
Test the solidified products to check if there are any issues such as glue leakage, glue overflow, unclear edge lines, bubbles, or irregular shapes.
 
Finished product packaging
Ensure that the finished product has completely cooled down and the adhesive layer has fully solidified; the storage area should be kept dry and well-ventilated to prevent the products from getting damp or aging. Package and protect the qualified finished products to prevent any damage during transportation and storage.
 
We have a customer from Russia who uses PU glue to color the car keys. We recommend that he use the visual dispensing machine with a 2 Component Screw Valve, so that the car keys can achieve the effect of thin and flat uniform glue, strong adhesion, and clear filling of the edge boundaries.

DONG GUAN WELDO AUTOMATIC EQUIPMENTTECHNOLOGY CO.,LTD

Visual Dispensing Machine

The Vision Dispensing Machine is applied to dispense PU glue on different material workpieces for various purposes. It applies kinds of valves suitable for different liquid materials, and customized run-length machines. It features a multi-line precision point demand design, integrating high-precision visual positioning and intelligent calculation. This machine requires no jig, automatically adjusts construction angle and position, and supports non-standardized processes.

Application Products

Poly Badge

Metal Trims

Stickers

Luggage Accessories

Car accessories

Garment Accessories

Jewellery Painting

Keychain Painting

Product Process

COMPANY SHOW

WELDO

Precision Dispensing, Tailored & Supported. WELDO brings 15+ years of expertise in visual dispensing, PVC, and stone setting solutions.

COMPANY SHOW

WELDO

WELDO delivers 15+ years of expertise in customized fluid dispensing solutions, offering visual, PVC, and stone setting machines with reliable support.
ABOUT US
WELDO was founded in 2008 and relocated in 2010 to Dongguan, a city renowned as the “World’s Factory.” As a national high-tech enterprise, the company boasts a highly qualified team — over 50% of employees hold a bachelor’s degree or higher — and owns numerous patents and software copyrights.

WELDO closely collaborates with leading companies in various industries such as badge manufacturing, footwear materials, nail art, home appliances, and jewelry & silverware, to jointly develop customized visual dispensing and automated assembly equipment.

WELDO’s products are exported to more than 30 countries and regions worldwide, including Germany, the United States, Italy, India, Indonesia, and Brazil. Its core product range covers panoramic vision dispensing machines, badge coloring machines, automatic PVC dispensing machines, fully automatic PVC production lines, intelligent eyelash dispensing machines, visual dispensing and rhinestone machines, and 3D scanning wax setting machines.

In dispensing technology, WELDO applies various advanced valves — including piezoelectric jet valves, pneumatic jetting valves, precision dispensing valves, spray valves, and screw valves — providing professional dispensing solutions for a wide range of fluid materials such as paints, inks, AB glue, UV glue, and hot melt adhesives.

WELDO

Comprehensive Service Support

Service Process:
1. Requirements Communication
2. Solution Customization
3. Production Testing
4. Training and Delivery
5. After-sales Support
We provide:
1. Detailed installation instructions and operation training videos.
2. Professional online technical support and troubleshooting.
3. Clear machine warranty policy and timely maintenance services.
WHY CHOOSE US
  • 01
    Intelligent Vision Recognition System
    The system is equipped with a high-performance industrial vision camera that automatically identifies product position, shape contours, and dispensing paths. 
  • 02
    High-Precision Non-Contact Jet Dispensing Valve
    Advanced jet dispensing technology enables true non-contact dispensing, allowing adhesive to be accurately deposited without touching the product surface. 
  • 03
    High-Speed and Stable Dispensing Performance
    With high-speed jetting capability, the system greatly reduces cycle time while maintaining excellent repeatability and stability during continuous operation.
  • 04
    Clean, Precise, and Consistent Dispensing Results
    Non-contact dispensing prevents surface damage and contamination, delivering clean and aesthetically pleasing dispensing results. Precise control of dispense volume and jet frequency ensures consistent quality across all products.
EXHIBITION
WHAT A CLIENT SAY?
  • In our contract packaging operation, speed, accuracy, and changeover time are vital. Your visual dispensing machine excels in all three areas.
    Olivia Martinez
    Quality Control Supervisor
  • Implementing your visual dispensing machine has transformed our small-batch production for wearable electronics.
    It offers the flexibility we need for rapid prototyping while maintaining the consistency required for full-scale runs.
    Daniel Kim
    Process Optimization Manager
  • The machine’s vision alignment feature is exceptionally reliable, even with complex component geometries.
    Your engineers provided excellent onsite training and remained available for remote support whenever needed.
    Sophia Johnson
    Technical Operations Lead
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Home> Products> Visual Dispensing Machine> PU Dispensing Machine
Dongguan Weldo automatic equipment technology co.,Ltd WELDO was founded in 2007 and relocated in 2010 to Dongguan, a city renowned as the “World’s Factory.” As a national high-tech enterprise, the company boasts a highly qualified team — over 50% of...

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