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Developed at WOOJIN PLAIMM's R&D center in Austria, TH series is designed to deliver the familiarity in design and performance of its European counterparts. On cycle time, molding precision, and energy-efficiency, TH delivers.

The machine's precision rivals that of a fully electric type IMM, providing more power with the same control offered by all-electric technology, avoiding many of the costs inherent in all-electric machines.

■ Wide range of availabilityThe series is designed for all types of products, offeringclamping forces between 50 and 450 tons, and the full range of screw sizes and types to match.

■ Energy saving motorThe hydraulic system is powered by servo-pump, minimizing energy loss.Servo technology reduces energy consumption up to 80% with less ambient noise and vibration than traditional motors.

■ Reduce cycle timeWOOJIN's Austrian-engineered hydraulic system offeres high speed mold movement with independent hydraulic oil circulation to shorten startup time and eliminate idle machine time during production.

InjectionUnit

Model

IH170 IH210 IH520 IH920 IH1000 IH1700 IH2300

S O A B O O A B S2 S O A B C O A B S O A B O A B O A B

22 25 28 32 25 28 32 36 28 32 36 40 45 50 45 50 55 45 50 55 60 60 65 70 65 70 80

TH 50S

TH 80S

TH 110S

TH 130S

TH 170S

TH 220S

TH 280S

TH 350S

TH 350WS

TH 450S

TH seriesPremium hydraulic injection molding machine

THThe advantages of

■ Perfect degree of platen parallelismMoving platen equipped with redundant rigid caged roller LM guide, eliminating friction at the base and preserving linearity through even the most abrupt movements. Facilitates precision measurement of clamp position and resists mold deflection.

■ Intuitive controller15 inch touch screen color monitor with multi-lingual support and intuitive interface makes the machine easyto control while eliminating guesswork.

■ Easy-access screw & barrelThe fast maintenance made possible for screw & barrel service is owed to WOOJIN's QBC (Quick Barrel Change) structure, enabling the screw and barrel to be hoist-removed with minimal disassembly and without disturbing the injection unit's position.

■ Various options availableOptional accumulator system is ideal for thin-wallmolding and other high injection speed applications.Optional hybrid injection system permits ultra-short cycle time, uses less energy, and facilitates high-tech injection molding applications.

13The new 5-point toggle design gives complete control over mold open/close positions with a resolution of 0.1mm on the toggle's position. Measuring toggle positon enhances precision as the toggle reaches full extention and clamps the mold, enabling nuanced control of the mold-protect zone and a gentle handling of stack molds. The hydraulic closed-loop system uses feedback to throttle and boost available hydraulic power in real-time, providing a smooth, responsive transition from standstill to full-speed clamp movement.

ms

250

200

100

150

50

0Before

optimizationTarget value Optimization

result

■ Reaction time of clamping

mm

0.5

0.6

0.7

0.8

0.4

0.2

0.3

0.1

0

Before optimization

Target value Optimization result

■ Precision of clamping position

mm

1000

100

1

10

0.1

0.01Before

optimizationTarget value Optimization

result

■ Variation of mold closing position

Your advantages

5-point toggle structure

Low friction LM guide

T-slot

Brake motor for platen adjustment

Proportional valve for high speed mold movement

6

5

Center-press moving platen 1 4

3

2

No-slip brake motor prevents the rear platen from drifting out of position even under extreme force. When the user sets the mold height for a job, the clamp position stays put for the entire job.

2. Proportional valve

3. Brake motor 5. T-slot

14

12

10

8

6

4

2

0kW Standard

proportional valve

Proportional valve for high speed

mold opening & closing

Saveenergy

Amou

nt o

f ene

rgy

cons

umpt

ion(

kW)

- Evenly distributed clamping force

- Lengthens mold life expectancy

- Eliminates cavity distortions andcontraction defects due to mold deflection

1. Center-press moving platen

▲ Center press type toggle

▲ General type toggle

When the mold get smaller, compression increases on the corners of the mold.

Even though there is change of mold size, compression will be same on the mold.

Mold base

Mold base

Mold base

Mold base

■ Net energy reduction

- rapid movement: 13% reduction

- slow movement: 31% reduction

Clamping unit

1. 서보 펌프 시스템Servo pump system

Low-latency hydraulic valves enable responsive and and precise control, minimizing unnecessary oil movement and dynamically adjusting for optimum speed & smoothness.

The 5-point advanced toggle structure with center press platen evenly distributes clamping force across the entire mold face, preventing mold deflection.

4. Low-friction linear motion guide

Rigid roller LM Guide resists mold deflection and facilitates rapid speed changes, permitting further reduction in cycle times.

T-slot shape for mold mounting permits rapid changes to diverse mold sizes.

Before : 200msAfter : 80ms

Before : ±0.7mmAfter : ±0.1mm

Before : ±90mmAfter : ±0.2mm

- Energy consumption: 60%~80% less

- Cooling water consumption: 25% less

- Hydraulic oil volume required: 33% less

The servo pump uses system feedback to dynamically control motor RPMs in real time. The energy used by the hydraulics is limited to the energy needed by the process.Particularly during the hold and cooling stages, the greatest energy savings can be realized. The mechanical leverage of the toggle preserves clamping force, eliminating the need for hydraulic power.Real time low-latency control of the AC servo motor's RPMs enables state-of-the-art responsiveness from idle to max speed.

15With energy-efficient servo hydraulics and a dedicated oil conditioning circuit, the process sees minimal time to stability, cuts energy waste, and is gentle on hydraulic oil. The anodized seamless pipe structure is rugged and easy to modify/replace on-site. Compression fitted pipe joints have greater toughness than welded fittings, are easy to fit consistently, and are less likely to form leaks after years of ownership.

1. Servo pump system

General pump

Servo pumpEner

gy c

onsu

mpt

ion

amou

nt(k

w/h

)

General type pump vs Servo pump system

Comparison of energy consumption

Huge amount of energy consumption in the section of hold pressure & cooling.

Low level of energy consumption in the section of hold pressure & cooling.

▲ Servo motor & pump system

Holding pressure Charging Injection EjectingMold close

Mold openCooling

Motor

Oil Tank(refined oil)

(used oil)

Oil CoolerOil Filter

Used

2. Independent cooling and filtering system

3. Anodized pipe & coated oil tank

▲ Independent cooling & filtering system ▲ Butterfly valve

Hydraulic unit

A dedicated hydraulic circuit enables the machine to begin conditioning the oil while the user sets up a job. When the first shots are produced, the oil can be at optimum temperature and purged of trapped gases, creating a consistent process from the first shots to the last.

Interior-anodized seamless pipe is rust-free with minimal shearing (friction drag) of oil flow. Pipe flange with compression fitting is weld-free and can be easily fitted/modified/replaced on-site. Pipe compression fittings stay tough through repeated temperature cycling when brittle spots in welds form leaks.

Polymer-coated tank interior is corrosion-free and anti-abrasive, ensuring that foreign particulates are filtered out before forming deposits in the tank.

- Faster startup to a process with consisistent oil conditions

- Prevent hydraulic seal damage from oil overheats

- Faster cooling and filtering than integrated conditioning

- Automatic filter alert(sensor detects high pressure gradient across filter)

before After

1000

800

600

400

200

50 80 110 130 170 220 280 350 4500

33% saving in oil tank capacity

* Efficiently engineered, eliminating up to 33%the oil volume of a typical tank. (then the old version)[ ]

171. Closed-loop back pressure control

injection speed (mm/s) pump speed(rpm/10) valve

Old version TH version

-50

-100 -50 0 50 100 150 200 250 300 350 400 450 500

0

50

100

150

200

300

250

Stable injection speed after 230mm/s

0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

-50 0 50 100 150 200 250 350300 400

Stable injection speed after 160mm/s

Variation in speed

Unstable acceleration

Rapid & precise acceleration

Comparison graph of injection functionThe comparison of function between Old version and TH220S

Time in ms Time in ms

No speed variation

Engineered for high speed and precision, the injection unit provides a responsive injection profile, capable of consistently producing products requiring drastic changes in cavity shape and melt flow.

A full line of screw & barrel design ensures that any material, whether corrosive PVC, optical PC, GF nylon, colorant, or any engineered resin, can be processed.

Optional accumulator system is ideal for thin-wall molding and other high injection speed applications. Optional hybrid injection system permits ultra-short cycle time, uses less energy, and facilitates high-tech injection molding applications.

Injection unit

3

2

4

1

5

Closed loop control of back pressure

In-line screw type injection unit

Q.B.C (Quick Barrel Change)

Low friction LM guide

Dual pull nozzle touch cylinder

High-performance back-pressure control valves respond in real time to actual measured pressures and user set pressures for low-latency responsiveness. Electric signals in the valve control feedback loop are directly processed for minimum latency that reaches all components controlling hydraulic flow, establishing a stable & responsive system. A specialized nickel alloy in each valve block resists corrosion while increasing density and ductility, reducing block structural fatigue  and ensuring long life expectancy.

2. Dual pull nozzle touch cylinder

Bilaterally symmetric design with self-centering rod cushions elminates mold disturbances from nozzle impact and reduces wear on misaligned nozzle tips. Nozzle touch force is evenly dispersed across the nozzle, preventing melt leakage and enhancing process precision.

3. Quick barrel change

4. In-line screw type injection unit

5. Low-friction linear motion guide

→

→Quick-disconnect barrel heater plugs and rigid lift-out design of the screw & barrel permits simple hoist-removal of the S&B for maintenance without disturbing the injection unit's alignment.

Industry-standard in-line injection unit with rear-feed hopper throat supports independent actuation of injection and screw rotation, permitting rotating injection and efficient charging.

4-way caged bearing LM guide provides maximum rigidity with minimal resistance to movement, ensuring smooth guidance and stable nozzle touch force.

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2. PID temperature and synchronized heating control

1. Hydraulic accumulator system

Target value Target value

Setti

ng va

lue

Setti

ng va

lue

Time

[ PID control ]

Time

[ On / Off control ]

Non-synchronized heating Synchronized heating

Time

Ope

ratio

n am

ount

(%)

Ope

ratio

n am

ount

(%)

100

0

Time

100

0

Charging zone Compressing zone Feeding zone

3. Hybrid system

4. Smart screw

Cons

umo

de e

nerg

ia

Hidráulico

Tiempo (s)

Cierre de molde Inyección Carga Enfriamiento Apertura de molde Expulsión

Híbrido

Pow

er C

onsu

mpti

on

Hydraulic

Time (sec)

Mold closing Injection Charging Cooling Mold opning Out

Hybrid

Main flight

Main flight

Sub flight

Sub flight

Hybrid system(Electric motor)

Energy saving area

Option

- Injection speed : 1,000mm/sec

- Responsiveness : 60ms

- Coefficient for weight change level : within 0.02%

- System representation : within 0.1%

(※Based on IH520)

High-outflow hydraulic accumulators are ideal for thin-wall molding needs, enabling high-speed injection and powerful on-the-fly core actuation. Closed-loop servo valve can be toggled between high-speed injection mode and standard injection mode, ensuring cross-compatibility between all applicably sized molds.

Industry-standard Proportional/Integral/Derivative (PID) heater control with switched Solid State Relays (SSRs) ensures an evenly heated barrel that resists deviating from set temperatures and is easy to service. Programmable temperature alarms and automatic heater shutoff prevent resin carbonization in-process or in the event of operator inattention. By comparison, simple on/off controlling by set value/perceived exhibits drift over time and leads to uncontrolled variations in temperature.

Reduces injection unit energy consumption up to 30% while permitting simultaneous screw recovery and mold movement, reducing overall cycle time.High-power closed-loop AC electric servo motor allows for precision control over screw RPMs through a dedicated low-latency servo drive.

Double-flight design through the charging zone ensures uniform colorant dispersion and randomized polymer chain structure.Promotes a lower melt temperature and can treat production problems associated with excessive charging back pressure and over-shearing of the melt.

[ Smart screw ]

[ General single screw ]