Multi-Inject (Rotate Platen)

Multi-Inject (Rotate Platen)



JONWAI – 30 years of Leading Experience in Multi-Resin Molding Technology.

In 1982 , JONWAI introduce the 1st 2-color injection molding machine in Taiwan,

Through decades of R&D in multi-resin injection technology, JONWAI have successfully developed several methods of multi-component injection.

These unique technology afford our customers more diversify either production pattern or product designs.

JONWAI sincerely hope these update multi-resin injection technology could assist our customers.


Higher Products Added Value, Increasing Production Cost.


  1. Vertical Rotary Table System ( standard )

  2. Rotary Plate System ( option )

  3. Core-Puller Sliding System ( option )

  4. Parallelized injection ( option )

Clamping unit feature

  • Reinforced platen in box structure design by FEA analysis to improve the platen

Strength and durability, and reduce the deformation.

  • The internal 5 points toggle clamping system through advanced analysis, the structure of toggle is solid and reliability.

  • Unique toggle pin and bush design reduce the toggle surface pressure.

Superior bush cannelure layout spread out lubricants effectivery.

  • The design is without using bracket on the rear platen.

  • Larger tie-bar diameter and pre-hardened steel to be used, with unique screw and nut design to reduce the inner – strength on tie bar thread. Avoid tie bar broken.

  • Wide movable platen support and unique trail design optimum platen parallelism even the heavy mold.

  • To minimize the toggle pressure and tie bar stress.

  • Lower platen deformation and eccentric magnitude to prevent the stress concentration and increase the durability.

  • Platen and toggle structure, enhance the reliability.

  • Extra wide platen and tie bar space design.

  • Optimum platen parallelism.


Injection unit

  • Parallel and horizontal injection units, easy to operate and maintain, more space saving.

  • Single injection cylinder design, power direct and stable RPM.

  • High plasticizing capacity and stable injection pressure to ensure quality molding.

  • Twn – rail injection seat drive former pulling cylinders*2 to ensure the nozzle centrality.

  • High – mixing screw ensure material well mixing.

  • Injection close loop for high precision molding.

  • Injection accumulator maximum speed to 900mm/second.

  • Servo motor system, energy saving 35% ~ 80%.

Rotary Mechanism

  • Vertical Rotary table system (standard).

  • Rotary plate system (optional function).

  • Rotary mechanism drives by hydraulic motor system, pressure and flow – loop.

  • 2 step pressure and speed control for rotary mechanism.

  • Mechanical safety position stopper.

  • Hydraulic safety position cylinder with limit switch.

  • Rotary speed is lower than 1 second. Based on table diameter 760mm in 180 degree index.

  • Rotary Location precision: under +/- 0.025mm

  • Core – Puller sliding 2 color system available (optional function).

  • Cooling system distribute from the center of rotary table.


Hydraulic system

  • Bosch high response P/Q system.

  • Independent proportional back pressure control.

  • Full time differential hydraulic system for reliable and fast mold open / close.

  • All fixed pipe and fitting made without welding avoid leakage prevention.

  • High quality oil seal strengthen the airtightness.

  • Unique low pressure mold protection feature.

  • Hydraulic safety device on front / rear door for operator safety.

  • Fixed – displacement pumps.

  • Mold Open / Close brake device.

  • Hydraulic oil filter inside the oil tank for reflux oil.

  • By – pass reflux filter enlarge hydraulic oil time limit.

  • Injection pressure / flow closed – loop (Option)


  • The heat insulation device for movable / stationary platen.

  • High – mixing screw.

  • The screw is for engineering material application.

  • Accumulator device for high speed injection.

  • Glass type water distributer with on – off switch.

  • RS232 & RS422 card interface.

  • Internet or Intranet connect interface and system

  • 4 sets Core puller devices.


Control system

  • Three liner transducers for clamping / injection / ejector position control.

  • Individual and separated setting for injection / holding / charging parameter.

  • Injection profile for pressure / speed.

  • Screw RPM display.

  • Cold start prevention function.

  • Barrel temperature abnormal protection.

  • Temperature weekly pr – setting function, can pre – set the preheat time daily.

  • Oil tank temperature and level monitoring.

  • 90 sets mold memories.

  • Production quantity and cycle time monitoring.

  • SPC quality control system.

  • Multi – language selection.

  • Alarm message display function.

  • Troubleshooting record.

  • LAN interface.

  • USB interface

  • Multi – authorize security management system.

  • 10.4 LCD color display.

  • Data and screen lock function.