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PRESS BRAKE CENTRAL BLOCK

PRESS MANIFOLD (Ed. 07/2012) /18



SUMMARY Cap. 1 Basic Instruction Page 4 Cap. 2 Working parameters Page 5 Cap. 3 Option one – Single poppet valve Page 6 Cap. 4 Option two – Middle safety level Page 7 Cap. 5 Option three – High safety level Page 8 Cap. 6 Part List Page 9 Cap. 7 Sequence Diagram Page 10 Cap. 8 Central Block CAD View Page 11 Cap. 9 Overall Dimensions of Block Page 12 Cap. 10 CFP Suction Valve Page 13

Cap. 10.1 Performance Page 13 Cap. 10.2 Opening and Piloting Pressure Page 13 Cap. 10.3 Identification Code Page 14 Cap. 10.4 Characteristic Curves with Suction Flow from A-B Page 14 Cap. 10.5 Overall Dimensions Page 15 Cap. 10.6 Installation Page 16

Cap. 11 RFP Suction Valve Page 17 Cap. 12 Ordering Form Page 18



1. BASIC INSTRUCTION The hydraulic system from Duplomatic Oleodinamica S.p.A. was designed for CNC

controlled press brakes, especially for pressing forces up to 3.000 kN The horizontal distance between the two pressing cylinders should be 3.500 mm

max The system and all its components are designed uniquely for press brakes

applications, and should be installed by qualified personnel It is essential to adhere strictly to the installation and operation instructions of the

products before commissioning the hydraulic system Make sure that all hydraulic components are mounted in the correct way

Check the fluid level in the tank within a few hours after start-up to detect any

possible fluid loss After the first 100 hours, observe the filter contamination and calibration, and

remember that every 3.000 hours of operation, hydraulic fluid and filter elements should be substituted



2. WORKING PERFORMANCE

Maximum operating pressure bar 320 Maximum flow rate l/min 95 Operating limits check Electrical connections check Ambient temperature range ° C - 10 / + 50 Fluid temperature range ° C 0 / + 60 Fluid viscosity range cSt 20 ÷ 400 Recommended viscosity cSt 25 Fluid contamination degree According to ISO 4406: 1999 class 20/18/15 Hydraulic fluid Mineral oil according to DIN 51524, other types on request



3. OPTION ONE – SINGLE POPPET VALVE

The most economic solution for press brake market, without monitored valves and single poppet for leak free operations.



4. OPTION TWO – MIDDLE SAFETY LAVEL

The option offers leak free operation with single poppet and balancing valves for optimal control.



5. OPTION THREE – HIGH SAFETY LEVEL (Double poppet version – CE Suitable) Two poppet valves makes the system a highly reliable and leak free operation under all circumstances. Monitored valve offers high level of security.



6. PART LIST Numbers 1, 2 and 3 represent the 3 available options and respective components. ITEM CODE COMPONENT 1 2 3

1 LC16-PS2/20N LOGIC ELEMENT X X X

2 LP16DPE6/20N LOGIC ELEMENT X X X

3 PRED3-350/10N-D24K1 PROP. PRESSURE VALVE X X X

6 DSE3-C16/10N-D24K1 PROP. DIRECTIONAL VALVE X X X

8 DS3M-TA/10N-D24K1 MONITORED DIRECTIONAL VALVE * - - X

9 CR4/22N RELIEF VALVE - X X

10 EMC-3416-NC-0-24C MONITORED POPPET VALVE * - - X

11 RESTRICTOR VSTA M6X8 RESTRICTOR X X X

12 CR6/22N RELIEF VALVE X X X

13 RESTRICOTR VSTA M6X8 RESTRICTOR X X X

14 MAIN MANIFOLD PRESS BRAKE MAIN MANIFOLD PRESS BRAKE X X X

15 PRESA DI PRESS.PN630 G1/4 PRESSURE READING POINT X X X

16 NG06 BALANCING MANIFOLD NG06 BALANCING MANIFOLD - X X

17 KT08-2NC/10N-D24K1 POPPET VALVE X - X

* This item in option 1 & 2 will be replaced by non-monitored version or removed completely.



7. SEQUENCE DIAGRAM

Items 010 (S1/S2) are present only in option 1 and 2 Items 017 (S3/S4) are present only in option 2 and 3



8. CENTRAL BLOCK CAD VIEW

6* 6*

10*

12

16

10*

17 17

8*

1+2+3

14



9. OVERALL DIMENSIONS OF THE BLOCK



10. CFP SUCTION VALVES The CFP valves are pilot operated check valves, expressly designed for hydraulic presses, to allow easy filling and emptying of the press cylinder during the rapid down and up strokes. They are “sandwich” mounted, to be installed directly between the suction flange (connected to the tank), and the cylinder.

A version with pre-opening device is available. Connected to the X pilot port allows circuit decompression before the cylinder raising phase begins.

The CFP valves are available in seven different sizes with max flow up to 2.500 l/min. 10.1 PERFORMANCE

10.2 OPENING AND PILOTING PRESSURE



10.3 IDENTIFICATION CODE

10.4 CHARACTERISTIC CURVES WITH SUCTION FLOW FROM A-B



10.5 OVERALL DIMENSIONS



10.6 INSTALLATION

NOTE A: Calculated diameters for PN 16 – DIN 2448 steel pipes. NOTE B: For applications with standard connection flanges type UNI 2284, UNI 2285, UNI 2286, special bushings to fit on fastening bolts must be provided in order to ensure a correct valve mounting. For information about the installation with UNI connectors flanges, please consult our technical department.



11. RFP SUCTION VALVE The normally open logic elements are used as suction or filling valves. Improved design based on our logic valve LC-*A. Made by 2-way cartridge valve with ISO 7368/DIN 24342 cavity bore.

The cartridge valve has an area ratio 5,1

1

3

1 AA . The poppet (1) is normally open thanks to

the spring (2). The poppet closes when the piloting pressure acting on area A3 is higher on area A1 (pressure on A port), or on area A2 (pressure on B port), added to the spring load value. Valve seat dimensions according to ISO 7368/DIN 24342.



12. ORDERING FORM

COMPANY Address Phone Fax www P.I.C. Phone e-Mail

VERTICAL PRESS INFORMATION

PRESSING FORCE kN MAIN CYLINDER – PISTON DIAMETER mm FAST DOWN SPEED mm WORKING SPEED mm/s FAST RETURN SPEED mm/s BEAM WEIGHT TOOLS INCLUDED kg

OPTIONS

1) Upper tool clamping Yes______________________ bar No

2) Used CNC-control

Make _______________ Type ________________

3) Lower tool clamping Yes______________________ bar No 4) Proportional hydraulic crowning Yes______________________ bar No

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