Description

Technical Parameters

1. The Automatic Sheet Metal Punching Machine is designed with a high rigidity frame, which is welded with high-quality steel plates and treated with stress relief technology to improve the stability and reliability of the entire machine's accuracy.

2. The transmission center is aligned with the overall center of the machine to ensure the accuracy and stability of the punch press.

3. The mold adjustment accuracy can reach up to 0.01mm, which is safe, convenient, and reliable.

4. Advanced design concepts, low noise, low consumption, and energy conservation.

5. Automatic Sheet Metal Punching Machine with fully intelligent PLC control, electric mold adjustment, and overload hydraulic protection; Variable frequency adjustment and automatic oil cut-off alarm device; Electronic digital display module with high memory function, optional hydraulic locking and lifting automatic device.

Item		DPA-25		DPA-35
Model		V	H	V	H
Capacity	Ton	25		35
Rated Tonnage Point	mm	3.2	1.6	3.2	1.6
Speed Changing	s.p.m	60～140	130～200	40～120	110～180
Stable Speed	s.p.m	110		85
Stroke	mm	60	30	70	40
Die Height	mm	200	215	220	235
Slide Adjustment	mm	50		55
Slide Area	mm	300×220×50		360×250×50
Bolster Area	mm	680×300×70		800×400×70
Shank Hole	mm	Φ38		Φ38
Main Motor	kw.p	2.2×4		3.7×4
Slide Adjust Device		Manual operation		Manual operation
Air Pressure	kg/cm²	5～6		5～6
Presses Precision		CNS(Jls)1class		CNS(JlS)1class
Presses Dimension	mm	930×1390×2125		1000×1450×2300
Die Cushion Capacity	Ton	-		2.3
Stroke	mm	-		50
Die Cushion effective area	mm²	-		300×230

DPA-45		DPA-60		DPA-80		DPA-110
V	H	V	H	V	H	V	H
45		60		80		110
3.2	1.6	4	2	4	2	6	3
40～100	100～150	35～90	80～120	35～80	80～120	30～60	60～90
75		65		65		50
80	50	120	60	150	70	180	80
250	265	310	340	340	380	360	410
60		75		80		80
400×300×60		500×360×70		560×420×70		650×470×80
850×440×80		900×500×80		1000×550×90		1150×600×110
Φ38		Φ50		Φ50		Φ50
5.5×4		5.5×4		7.5×4		11×4
Manual operation				Electric driving
5～6		5～6		5～6		5～6
CNS(JlS)1class
1040×1650×2390		1090×1670×2750		1328×1820×2980		1458×1970×3133
2.3		3.6		3.6		6.3
50		70		70		80
300×230		350×300		450×310		500×350

DPA-160		DPA-200		DPA-260		DPA-315
V	H	V	H	V	H	V	H
160		200		260		315
6	3	6	3	7	3.5	8	3.5
20～50	40～70	20～50	50～70	20～40	40～50	20～35	35～50
35		35		30		30
200	90	200	100	250	150	250	150
460	510	460	510	500	550	500	550
100		110		120		120
700×550×90		850×630×90		950×700×100		1200×700×100
1250×800×140		1400×820×160		1500×840×180		1600×840×180
Φ65		Φ65		Φ65		Φ70
15×4		18.5×4		22×4		30×4
Electric driving
5～6		5～6		5～6		5～6
CNS(Jls)1class		CNS(Jls)1class		CNS(Jls)1class		CNS(Jls)1class
1560×2390×3610		1790×2690×4058		1945×2865×4433		2145×2965×4500
10		14		14		16
80		100		100		100
650×420		710×480		810×480		810×480

Accessories	Standard
Hydraulic Over-load Protector	●
Manual Lubrication System	●
Frequency Inverter	●
Slide Adjust Device (DPA60 and below DPA60)	●
Slide Adjust Device (DPA 80 or more)	●
Die Height Indicator (DPA60 and below DPA60)	●
Die Height Indicator (DPA 80 or more)	●
Balance Device	●
Rotary Cam Switch	●
Crank Angle Indicator	●
Electric Stroke Counter	●
Air source Recepatacle	●
Against Over-run Safety Device	●
Maintenance Tool Box	●
Operation Manual	●

Accessories	Optional
Electrical Automatic Lubrication System	○
Pneumatic Die Cusion Device	○
Presrt Counter	○
Presrt Counter	○
Foot Switch	○
Quick Die Change Device (Die Lifter,Clamp And Die Arm shift mode)	○
	○
Slide Knock-out Device	○
Misfeed Detection Consent	○
Power Supply	○
Anti-vibration Press Mount	○
Photo-electronic Safety Device	○
Feeder	○
Rack	○
Leveler	○
Machanism Hand	○
Die Room Light	○

How to deal with internal leakage of pneumatic control valve

Pneumatic control valve internal leakage how to deal with the pneumatic control valve internal leakage is the most obvious phenomenon is the valve closed dead. There are foreign bodies in the valve cause the valve to close the fault, mostly in the new installation of the use of the valve, such as process pipe blowing and washing, without closing the regulator before, after the cut-off valve, or without a bypass. In many cases it is necessary to remove the valve for inspection, cleaning and removal of blockage. Easy crystallization or easy to block the occasion, can change the structure of the valve to reduce the blockage phenomenon, can be straight through the single, double seat valve to sleeve valve, with a self-cleaning performance of the Angle valve.

Pneumatic control valve before and after the pressure difference is large, and the output force of the actuator is not enough, there will be internal leakage fault. Should check the reason for the large pressure difference, is the process factor, or the selection of the wrong, increase the output force of the pneumatic actuator, is a common method to improve the sealing performance, such as adjusting the working range of the spring, use the spring with small stiffness; Add a locator, adjust the air source pressure; When there is still no change, the pneumatic actuator with greater thrust can only be used.

Spool or valve seat corrosion, wear is the main cause of valve leakage in the original. Maintenance needs to repair or replace the damaged spool, valve seat, pneumatic control valve is due to cavitation wear, can be used to flow closed valve, the valve outlet is installed throttle orifice plate, to keep the downstream side pressure of the control valve more than the liquid vapor pressure, can prevent high flow rate and low pressure zone into bubbles; For large differential pressure use, two regulator valves can be used in series to distribute and limit the valve pressure drop.

Factory display

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