China Finger Protected Resistance Spot Welding Machine

Finger protected resistance Spot Welding machine
Principle:
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:
-----------------------------------------------------------------------------------------------------------
MINDER-HIGHTECH
guangzhou minder-hightech co.,ltd
contact:shunyu.hu
cellphone:0086-15813334038