Jh21 Series Punching Press Machine And Power Press

WORLD

JH21 C Frame Single Crank Power Press

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JH21 Model Presses

Most popular c type press machine for sheet metal parts stamping, punching, cutting, bending, trimming and blanking process. Press tonnages are from 25ton to 400ton. JH21 c frame press is standard equip with PLC, touch screen HMl, wet type pneumatic clutch and brake, safety solenoid valve. hydraulic overload pump,automatic grease lubricant pump and slide balance clinders, Safety light barriers, frequency inverter for adjustable stroke speeds, pistion type die cushion, die quick change clamps, tonnage monitor, safety die lock are all optional. This single crank press can work with coil sheet roller feeder to act as an automatic press. Several automatio presses with transfer system such as manipulators can work as full automatic press line.

Benefits & Features

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World patent wet type pneumatic clutch and brake for power press machine .

World produce the flywheel, the drive shaft, the gear ring and assemble the clutch with imported friction discs and seals. The friction discs are oil bath which is better for lubrication and cooling. All clutches must pass temperature testing and weight balance testing. Wet clutch has the benefits such as longer service life, lower noise, cheaper maintenance cost and easier maintenance, comparing to dry type clutch. Especially for house hold appliance parts stamping due to more strict cleaness request.

PlC for pneumatic press control

Programmable logistic control system is standard equip to all world brand automatic power presses. Schneider. Omron, Panasonic are all available. Automatic grease lubrication pump is also controlled by the PLC and aperator can set the lubrication time and frequency through the HMI. The press can work as inches, single stroke and continuous strokes. There is an emergency stop button on the control panel for emergency using. Press working status could be checked through the HMl too.

Hydraulic overload protection system for pneumatic press machine

World press uses hydraulic overload protection system instead of conventional mechanical shearing plate with higher reliability and more.sensitive action. If wrong operation or press overload, the high pressure hydraulic oil under the bowl will return to the overload pump oil tank. Meantime a signal will be sent to the press and the press will stop immediately to protect the die and the pneumatic power press.There is a reset switch on the control panel and the overload pump will pump the hydraulic oil back to the ram. Press will be ready again for operation.

Compact stucture of the C type press

1. Cross located crankshaf
2. Motor and clutch are on the back
3. Two slide balance cylinders
4. C frame steel welded body, annealing treatment
5. Overload pump, grease pump and pneumatic system are all in the back

High precision rectangular type slide quides for the gap frame press

Lenathened rectanqular type six faces ram slides with bronze plates fixed on the press body. Higher precision and longer surface life.Guide gaps could be adjusted by the bolts in the front. All the rams are casting in world factory and machining by cnc milling center.Automatic qrease lubrication system provides proper lubricant for the quides. Reliable, stable and lower noise.

Technical Parameters

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ITEM		CODE	UNIT	JH21-25	JH21-45	JH21-60	JH21-80	JH21-100	JH21-125	JH21-160	JH21-200	JH21-250	JH21-315	JH21-400
Nominal Capacity		Pe	KN	250	450	600	800	1000	1250	1600	2000	2500	3150	4000
Slide Stroke Length		S	mm	80	120	140	160	160	180	200	220	220	220	250
Slide Strokes	Fixed		spm	100	80	70	60	55	50	45	45	30	30	30
Slide Strokes	Variable(optional)		spm	60-120	50-95	45-85	40-75	35-65	35-65	30-55	30-55	20-35	20-35	20-35
Max. Die Shut Height		H2	mm	250	270	300	320	335	350	400	450	500	500	550
Die Shut Height Adjustment		t	mm	50	60	70	80	90	90	100	110	120	120	120
Throat Depth		C1	mm	210	225	270	310	330	350	400	430	450	450	490
Distance Between Uprights		d1	mm	450	515	560	610	670	670	736	910	980	980	1050
Slide Bottom Size	FB	b	mm	250	340	400	460	520	520	580	650	700	700	750
Slide Bottom Size	LR	a	mm	360	410	480	540	620	620	700	880	950	950	1020
Shank Hole Size	Diameter	d	mm	40	50	50	50	70	70	70	70	70	70	70
Shank Hole Size	Depth	I	mm	65	60	70	65	90	90	100	100	130	130	130
Table Size	FB	D	mm	400	440	520	600	640	680	760	840	880	880	950
	LR	C	mm	720	825	930	950	1060	1100	1175	1390	1500	1540	1700
	Thickness	H3	mm	80	110	130	140	145	155	165	180	190	190	210
Table Hole Diameter		¢	mm	150	150	150	180	180	200	220	240	260	260	280
Overall Dimensions	FB	A	mm	1500	1585	1540	1765	2000	2040	2305	2600	2660	2720	2850
	LR	B	mm	945	1075	1200	1200	1300	1320	1420	1540	1640	1680	1750
	Height	H	mm	2120	2390	2570	2725	3010	3035	3215	3800	3850	3850	4140
Motor Power			KW	3	5.5	5.5	7.5	7.5	11	15	18.5	22	30	37
Weight(approximate)			kg	2450	3550	5150	6450	8650	9550	13600	19200	23200	26600	29500

Optional Parts.

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LIght Curtain

Inverter

Die Cushion

Die change

NC Feeder

The application case

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JH21 series punching press machine and power press