Electronic Hammer

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PWM Electronic Hammer

Electronic Hammer applying Electromagnetic Pulsative Vibration

Introduction of PWM Electronic Hammer

What is PWM Electronic Hammer?

Differentiating from existing ‘air knocker(mechanical type)’, ‘gear hammer(mechanical type)’, ‘vibrating motor(electrical type)’ and ‘magnetic hammer(electrical type)’applied mono dynamic mechanism each, it is the genuine world first combined vibrator integrating electrical, electronic and mechanical multiple dynamic mechanism.

Work sites are drastically changing upon material properties like granularity, viscosity and weight demanded industry/technology development toward fine powder material handling and complicate process needs, However existing vibrators have been introduced to market 20 years ago and technology development and innovation haven’t caught up with industry work site demand.

Consequentially work sites have been faced with hundreds of predicaments naming productivity decline, labor cost increase resulting in production cost increase and damage to equipment by man powered hammering work resulting in maintenance time and cost increase both viciously cycling.

Sungil Hi-Tech PWM Electronic Hammer vibrator system is the right solution proving equipment characterized process improvement system avoiding and resolving cake and bridge phenomena.

Working Mechanism of

PWM Electronic Hammer System

Driving Mechanism of Transducer

Like top left hand side picture, magnetic flux is generating when ‘E core’ and ‘I core’ are apart each other and electric current flows alternately on lead wire twined at ‘E core’.

This generated magnetic flux makes laminated steel sheets magnetized and ‘E core’ pulls ‘I core’ electromagnetically. If electric current is shut down, pulling force won’t be made and ‘E core’ and ‘I core’ shall be split. Repeating ‘full’ and ‘split’ over 60 turns within one second, Transducer is working.

Bottom left hand side picture shows Fleming’s left-hand rule presenting thumb is for power direction, index finger is for magnetic flux direction and middle finger is for electric current.

Fleming’s left-hand rule instructs that force is generated toward thumb direction when magnetic flux flows to index finger direction and electric current flows to middle finger. This generated force is called as electromagnetic force. This rule is the basic principle of Transducer.

In order to transform electromagnetic force to mechanical energy, it needs to fix ‘E core’ to steel spring and fix ‘I core’ to the below position of steel spring. Under the above core position setting and upon magnetic flux generated condition, mechanical vibration shall be made by the mechanism/process that electromagnetic force prevails and absorb tensile force and steel spring is returned to original position.

Introduction of PWM Electronic Hammer

Features of PWM Electronic Hammer

Mechanical impact force of Transducer can be obtained when electric energy is provided to the coil of ‘E core’ periodically and intermittently. However, provided that proper driving algorithm isn’t applied, there will be a problem of over current at ‘E-I combined core’ and it is hard to obtain efficient kinetic energy.

In order to provide a solution to the above said inefficiency, Sungil Hi-Tech ingenious pulsative wave driving algorithm has been developed.

As shown in the right hand side pictures, waveform ‘S’ is original pulsative driving waveform of electronic hammer, waveform ‘D’ is an intermittent movement waveform for driving a specified section only. Should the applies and arithmetic logic operation to waveform (a) and (b), waveform (c) can be obtained. That is, a waveform acting only at ‘D’ section of waveform (b) is generated and deactivated at the balance ‘T’ section so that pulsative wave kinetic energy is generated by intermittent electric energy feeding to electronic hammer and consequentially vibration energy is generated at the section of pulse waveform coming.

Waveform (a) can be made by the PWM generation function of Micro Controller and waveform (b) can be made by outputport control method of Timer Interupter. Frequency, driving section and time of Sungil Hi-Tech PWM Electronic Hammer can be adjusted by user interface.

Features of PWM Electronic Hammer

What is pulsative wave?

(a) pulse waveform

(b) normal waveform

Pulsative wave is referred to irregular waveform by oscilloscope measuring. There is a difference in waveform between picture (a) pulse waveform and (b) normal waveform.

Sungil Hi-Tech PWM Electronic Hammer System is using natural vibration frequency so that equipment damage in hopper and electronic hammer itself is hardly expected even to a long time operation. To the contrary, other hammering systems using mono constant frequency may cause a damage. Further to equipment damage, mono constant frequency operating method may evoke more ‘cake’ and ‘bridge’ phenomena.

Waveform Measuring Graph

two(2) seconds motion and four(4) seconds pause setting

picture(a)
waveform measuring when PWM Electronic Hammer operated

picture(b)
enlarged graph of picture(a)

DRIVING GENERATOR TECHNICAL

FEATURES AND SPECIFICATION

SMHL Series (mostly applied to big size hopper and/or silo)
Model (Unit)	SMHL-02	SMHL-03	SMHL-04	SMHL-06	SMHL-08	SMHL-09
Frequency (Hz)	50 and 60 both available
Voltage (Single Phase, V)	AC220+10%
Transducer (Quantity Number)	2 EA	3 EA	4 EA	6 EA	8 EA	9 EA
Consume Power (W)	100 X 2	100 X 3	100 X 4	100 X 6	100 X 8	100 X 9
Transducer Frequency Range (Hz)	30 ~ 60 Hz (setting tuned to resonance frequency)
Weight of Driving Generator	Normal Type 15Kg (Explosion Proof Type 45Kg)			20Kg	25Kg
Weight of Transducer	15Kg per piece
Theoretical Transducer Frequenc	35 ~ 60 Hz
Dimension of Driving Generator	600 X 600 X 250 (mm)			650 X 1,300 X 350 (mm)
Dimension of Transducer	345 X 210 X 210 (mm)

TRANSDUCER

Sungil Hi-Tech electronic hammer has proved its performance reliability through long time continuous operation references at worksites. It has been owing to improving mechanical structure intensity and intensifying electromagnetic force of magnetic vibrator unlike to existing electromagnetic force application by others.
Sungil Hi-Tech electronic hammer realizes excellent performance through impact transmission to material flow lines(hopper, bin and etc.) and vibration mode simultaneously.
Available frequency range from 35Hz to 60 Hz is broad and can be adjusted to work site conditions.
According to site conditions, customers’ special requirements like capacity, vibration intensity and shape of transducer can be accommodated.

Technical Features
Model	Vibration Force (Kg)	Voltage (V)	Frequency (Hz)	Vibration per Minute (VPM)	Current (A)	Clamping Bolt	Weight (Kg)
SMH	60	200/220	50/60	1,500/3,00	2A	M12 X 4	8
SMHL	180	200/220	50/60	1,500/3,000	4A	M14 X 4	25

PRODUCT FEATURES

Sungil Hi-Tech PWM Electronic Hammer is performance intensified product through various installation and operation experiences. Differentiating with other hammering machines, it realizes advanced driving mechanism so that it is applicable to various powder, granular shape material treating lines and contributes to productivity enhancement and cost saving.

PRODUCT FEATURES
Performance Intensified Product	broad operation modes, simultaneous impact/vibration operation modes available.
Strong Points of Driving Generator	stability of power circuit and driving circuit, compact design of each circuit making maintenance easy
Productivity Enhancement	productivity enhancement by preventing precipitation, adhesion, caking, bridging phenomena
Applicable Work Sites	iron and steel making plant, powder handling plants, precision chemical plants and applicable to various powder and granular shape material handling lines
Customized Services to Needs	– normal type/ anti-dust type/ explosion proof type ready to customers’ needs – cost saving effect by installation and commissioning period squeeze

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PWM Electronic Hammer

What is PWM Electronic Hammer?

PWM Electronic Hammer System

Features of PWM Electronic Hammer

What is pulsative wave?

Waveform Measuring Graph

FEATURES AND SPECIFICATION

TRANSDUCER

PRODUCT FEATURES

SUNGIL Infos

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