China LED Display Series Middle Frequency Spot Welder Mdd1000 2000 3000 Mdhp-32

A inverter resistance spot welding machine including(configuration) :

1: Inverter spot welding power supply

2: Precision welding head

3: Finger protect system(soft touch system, optional)

4: welder checker(optional)

5: Welding cable

6: Electrode

7: Jigs if needed.

Good news! we developed the "soft touch system" to protect finger from pinch point injury when operate sopt welder. as below photo.

1: Inverter spot welding power supply

Character:

1,IGBT inverter with 4kHz frequency.

2,Three welding pulses with upslope and downslope.

3,Constant-current/constant-voltage/constant power/fixed pulse width control mode.

4,Upper and lower monitor of the current or the voltage etc.

5,Easily operating,.

6,Full I/O interface. The power supply can be easily used on a automatic machine.

7,Over heat false/wrong input voltage false/over control false.

Principle:

As the main circuit diagram below, the inverter welding power supply working principle is : (220V 50Hz AC)-----(310V 50Hz DC)-----(310V 4kHz AC)-----(5-18V 4kHz DC).

That is why the frequency being changed, because of the high frequency, the welder become more precision.

1, for 50Hz, we can only set 20ms welding time as a unit.but for 4kHz, we can set 0.25ms welding time as a unit, 80 times inproved.

2,when we do closed-loop constant control, the feedback speed is different, 20ms once by 0.25ms once, it is very much different.

AS the waveform of pulse DC current is flat, not like AC curve and around "zero"

We have compared that the DC power supply can sace more than 50% power than AC ones.

2,Advantages of inverter seam welding power supply and the current waveform of capacitor type/AC type/inverter type/crystal type

a,Inverter type of seam sealing power supply can saving 50% power than others.

b,Inverter type of seam sealing power supply can improve 3% stability than others.means less defective products.

c,Inverter type of seam sealing power supply can be much faster than others.

Specification

Model/No

MDD-1000

MDD-2000

MDD-3000

MDDL-4000

MDDL-6000C/T

MDDL-10000C/T

MDDL-20000C/T

MDDL-40000C/T

Input Voltage(V)

220V

220V

220V

3*380V

3*380V

3*380V

3*380V

3*380V

Rated Power(kVA)

4

6

10

12

16

25

40

65

Max current(DCA)

1000

2000

3000

4000

6000

10000

20000

40000

Max time setting(ms)

1250

1250

1250

1250

5000

5000

5000

5000

Rated duty cycle(%)

20

20

20

10

10

10

10

10

Frequency(kHz)

4

4

4

4

1

1

1

1

Welding step

3

3

3

3

3

3

3

3

Upslope downslope

Yes

Yes

Yse

Yes

Yes

Yes

Yes

Yes

Schedule memory

20

20

20

20

20

20

20

20

Dimension(mm)

435*185*320

435*185*320

435*185*320

460*400*300

460*222*345

385*200*300

510*270*400

440*240*350

Weight(Kg)

18

20.5

22

33

23.5

26

35

46

26.5

30

40

51

Including 2: spot welding head

1,Simple description:

Electrode pressure - also known as 'force' - is a key parameter in resistance welding. Proper force guarantees both weld quality and consistency by improving fit-up of the parts being welded, thus increasing the current path and reducing interface resistance. Force is provided by the weld head.

We offers a full range of resistance welding heads including manual, air-actuated, and electromagnetic models with opposed, step, series, and parallel gap electrode configurations. Force ranges from just 10N to 2000N (725.7kg) to address both fine and large scale spot welding applications.

2, Technical parameters of some weld heads:

Model

Force(N)

Stroke(mm)

Electrode holder

Electrode type

application

MDHP-10

20-100

20

Copper rod

Rod elctrode

Welding

MDHP-20

20-100

25

Copper rod

Rod elctrode

Welding

MDHP-32

30-200

20

Copper rod

Rod elctrode

Welding

MDHDP-20

20-100

20

Copper block

Rod elctrode

Welding

MDHP-65

50-400

45

Copper rod

Rod elctrode

Welding

MDHP-200

200-2000

45

Copper rod

Rod elctrode

Welding

MDHP-20UB

0-100

25

UB-WD1

Unibond

Bonding

MDHP-20UT

0-100

25

UT-WD1

Unitip

Welding

MDHP-20RF

0-100

25

RF-JY1

thermode

Reflow

3,The high and low force spot welding heads:

A, Fast follow-up

B, Precision bearings ensure long lifetime

C, Displacement and load cell options

D, Both benchtop and pedestal models

E, Adjustable Force-Firing

F, Low Inertia Designs

G, Air Actuated Option

H, Adjustable Tare Spring

I, Single Air Regulator

J, Up and Down Stops

K, Rugged Design

Part of welding sample:
welder type view:
Factory view:
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MINDER-HIGHTECH

guangzhou minder-hightech co.,ltd

contact:shunyu.hu

cellphone:0086-15813334038