ZGTEK offers fully-automatic ring forming and welding machines. the company also supplies simple machines which only form the rings, the welding needs to be done on a separate butt welder.

Automatic snap band making machine for filter bags, or snap band riveting machine, this machine is the fully automatic solution for the production of snap bands.

Based on different mesh sizes, wire thicknesses and aperture sizes, ZGTEK offers different solutions.

> Products > Filter Cage Welding Machine
Product Picture


  • Model: DLN-24-5
  • Cage wire quantity: 8/10/12/14/16/18/20/22/24
  • Ring space: can be set at any value
  • Cage outer diameter: 100-200mm
  • Rail length: standard 7m, up to 10m can be customized
  • Input voltage: 380V(2-phase) or customized
  • Power frequency: 50/60Hz
  • Designed max capacity of transformers: 80KVA
  • Instant power in sync mode: 36KVA
  • Instant power in async(time-sharing) mode: 18KVA
  • Transformers: 2sets
  • Air pressure: 0.6-0.8MPa
  • Required ir flow: 300L/min
  • Cooling method: natural cooling
  • Weight: about 1000KG


  • Very high welding speed, e.g. for a 12-wire cage, one ring takes only 0.18s
  • Automatic cage pulling, ring space can be set in the program through the user-friendly interface.
  • The cage pulling carriage is equipped with bearings, runs on the rail with linear guides, it's smooth and precise
  • Function of bad weld detection and auto re-welding
  • Material selection, different welding parameters for mild steel, galvanized steel and stainless steel
  • Auto compensation gives enough space to insert the ring when the ring distance is short
  • Ring space precision is 0.1mm; cage pulling speed is 0.4m/s
  • Rails and material shelf equipped and connected to the machine. The front end of the rail is adjustment-free. Good linearity can be achieved for wire cages
  • Four air tanks, short air route inside the machine ensures quick response of the cylinders
  • 25mm thick front plate resulted from one-time machining, firmly secure that the welding cylinders are on the same plane and perpendicular to the axes, thus the linearity of the cage can be ensured
  • Stroke-adjustable cylinders increase welding speed, pre-pressing only takes 0.08s
  • Equipped with powerful micro-computing unit
  • Sync/Time-sharing mode can put two transformers work at the same time or one after another, secure good welding quality even when the power supply is not very sufficient