Poor weld detection system

※Reference video (Nut welding specifications)


Platen-navi-Bolt detects with a high accuracy the difference in length of the neck lower part and shape of the tip of the bolt right before welding. Also, it detects whether or not the workpiece is set correctly in the same way.
It prevents manufacturing defectively welded products.
It is a poor weld detection system for bolt welding developed to be able to mount on any welding machine.

- National patent  - International patent  - Registered trademark  - Utility model  - Registered design  - Pending national registration for a patent  - Pending international registration for a patent and a design

Platen-navi-Bolt sensor unit

Excellent cooling effect

Internal water-cooling system that directly cools the inside of the holder reduce abrasion and spatter adhesion caused by heat on the electrode part.

Positioning is much easier

Air blow system reduces spatter adhesion to bolts, guide pins, and inside of the unit. Air-cooling effect prevents heating of the electrode. This system also leads to guide pin buoyancy effect, and improve detection accuracy.

Slim, space saving

Since no water jacket or intermediate adapter is used on the upper part of the holder, and because of the spring specification, it is slim and compact. And it’s light.
It allows minimum interference of the workpieces.

Suitable for bolt size M5・M6・M8・M10


with a length of 15 to 35 mm below the head.


Taper base

Use when mounting to a horn style welding machine.

Flange base

Use when mounting to a projection welding machine.

Flange base specification, example of installation


Taper base specification, example of installation



Directly, example of installation


Special Horn

Ceramics guide pipe specification

Ceramics guide pipe has high hardness and long service life. Because there is no electrocorrosion, nor abrasion. Also there is no adhesion of spatter and jamming of bolt.

Air-Bleeding Valve

Air-Bleeding Valve is included as standard equipment, which enables quick air bleeding in electrode replacements.

Air Blow system

Air blow system reduces spatter adhesion to bolts, guide pipes, and inside of the unit. Air cooling effect prevents heating of the electrode.

Platen-navi controller

  • CE marking acquisition
  • Palm-sized, outstanding operability
  • Overlapped nuts detection (optional sensor)
  • Manufacturing defects prevention
  • Error display


AC adapter

Junction cable for manual operation

Controller mounting plate

Cable Tie


Product name Platen-navi-Bolt
Weight Approx. 1.3 kg
Guide shaft drive Spring
Cooling method Inner water-cooling
Holder outer dia.(mm) 30
Holder overall length(mm) 100
Attachments AC adapter: 1 pce, Junction cable for manual operation: 1 pce, Controller mounting plate: 1 pce, Cable Tie: 2 pcs

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