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Controllable Gas Springs Overview of Gas Springs Subject to alterations Contents FIBRO – The latest technology – with a tradition of service Introduction Page 4-5 2·17243· 2001· 1 ▼ Description of the main components Active gas springs (KF) 2489.14 Passive gas springs (KP) 2489.16 Valve block 2489.00.40/41 10 Description of the functions Controllable gas spring KF KF + KP system without spring back Heating - cooling 11 11 - 12 13 - 14 15 Selecting the components KF order form KF + KP order form 17 - 19 20 21 Dimensions and Order Numbers Active gas springs (KF) 2489.14 Passive gas springs (KP) 2489.16 23 24 - 25 26 Control system Compressed air connections for mm hose Control valves Filling and emptying gas, KF Filling and emptying gas, KF + KP Valve block Control unit Gauging hoses / gauging couplings / distributor box Connecting hoses / direct connection / dimensions 27 - 28 29 - 30 31 32 - 33 34 - 35 36 37 38 - 39 40 - 42 Monitoring Process Safety Overheating protection Monitoring air pressure Mechanical control system Pressure sensor Pressure switch Rating plate 43 44 45 46 47 48 49 Cooling Gas cooler Cooling unit for controllable gas springs Hose and hose connectors, cooling system Distributor block, cooling system Connector block, cooling system Quick release connector, cooling system Hose and hose connector 51 - 53 54 - 57 58 59 60 60 60 61 Typical Applications Example of application with Gas Spring system KF+KP FAQs Matching the stroke length in KF Gas Springs Suggestion: conversion of existing systems 63 64 - 67 68 - 70 71 - 72 73 Subject to alterations FIBRO - your production partner But good products are not enough on their own FIBRO combines excellent products, the know-how and service competence of an internationally focused company, matched to the actual needs of customers wherever they are Weinsberg plant Hassmersheim plant Indexing Tables Standard Parts From 1962 onwards FIBRO pioneered the design and manufacture of indexing tables and soon gained an enviable reputation FIBROTAKT® indexing tables with face gear and ultra-high precision indexing, together with dependable rigidity Drive options: pneumatic, hydraulic via rack and pinion or electric with worm drive FIBROPLAN® NC – indexing tables with backlash adjustment worm drive or torque motor for use in machine tools for universal positioning and round and multi-axis processes (simultaneous operation) FIBROTOR® revolving tables and indexing tables with positive drive cam, offering very short cycle times even when transporting heavy loads Mainly used in nonmachining applications Thousands of FIBRO units are in use world-wide as integral key components in highoutput machinery Today the Standard Parts Division operates from the Hassmersheim and Weinsberg works, which manufacture a comprehensive range of standard parts and maintain stocks ready for immediate despatch world-wide The machine tool, mechanical engineering and systems engineering product ranges have been developed to meet the needs of customers They include steel die sets, guide elements, oilless guide elements and precision components such as punches and matrixes, special steel compression springs, gas springs, forming materials, metal bonding agents, moulding resins, peripheral equipment for pressing and tool making, tool slides with cam or roller slides and hydraulic cam systems FIBRO has become renowned world-wide for its comprehensive range of products in stock and its readiness to deliver 2·15XXX· 2000· ▼ FIBRO – an internationally successful company As a market leader in Standard Parts, Rotary Indexing Tables and Automation, FIBRO provides products and solutions to ensure your production keeps moving So what is the secret of the FIBRO success? Products developed in-house, tailor-made for the market with uncompromising quality Subject to alterations FIBRO is customer-focused – world-wide A well-developed network of sales and service points and strategic partners ensure that help is always at hand This ensures technical advance, world-wide experience in applications and rapid availability of products Facts and figures on FIBRO: - founded 1958 - approximately 1,000 staff - approx 100 representatives and service stations world-wide - branches in France, USA, Canada, India, Switzerland and Singapore - ISO 9001:2000 Quality Assurance and VDA 6.4 certification Automation Our production range consists of linear and surface gantry systems, transport systems such as precision roller guides, accumulating chain conveyors, pallet accumulating conveyors and flexible decoupling modules,shelf stacking systems and pallet mechanical handling systems We can provide our customers with dependable state of the art high performance systems from our standard range We take complete responsibility for the complete project, starting with designing the solution concepts at the design phase, right through to the final handover of the ready-to-go system 2·15XXX· 2000· 1 ▼ FIBRO has been active in the field of automation and robotics since 1974 and offers one of the most comprehensive ranges in this field A cleverly designed modular system based on translation units, rotary units, grippers, and guide gantries with trolleys make for easy construction of individual machines and complete systems, ranging from simple pick & place units right up to multi-axis robots These series-manufactured modules with electric, pneumatic or hydraulic drive, guarantee both high functional reliability and cost-effective prices The modular gantry systems can solve virtually any transporting problem using linear gantries, surface gantries and extension gantries These systems are being used successfully in many industries world-wide Applications include linking machine tools (automotive production), tool changing in machining facilities, palletising work pieces, unloading injection moulding dies, PCB feeders, press linking, palletising, stacking, loading and unloading, transporting and flexible linking, storage and buffering of work pieces of different sizes Subject to alterations Controllable Gas Springs Introduction Controllable gas springs (KF springs) are gas springs which can be locked in their bottom position The timing of the return stroke can be controlled to suit the application Controllable gas springs are available in 15 kN, 30 kN, 50 kN and 75 kN versions For best results the stroke length must always be used to the full with a tolerance of ± 0.5 mm 489.14 2489.16 The gas spring return stroke can be controlled electrically or pneumatically from either the tool or the press end In the basic version of the gas spring (KF), it returns about mm before it is held in the bottom position This spring back effect can be eliminated, if required, by connecting the KF gas spring to a passive gas spring (KP) via a valve block This is known as a KF + KP system Both variants are illustrated in this brochure For this reason the springs are available with any stroke length from to 167 mm in mm increments General instructions You can ensure system safety and reliability by supplying FIBRO with the application data and drawings of the installation arrangements for checking Please note that the number of the screwed connections and the hose lengths for installation in the system must be determined Assembly, commissioning, maintenance and servicing of controllable gas springs require special knowledge and may only be carried out by FIBRO appropriately trained, specialist personnel You can arrange for the work to be completed by a FIBRO customer service engineer, the invoiced cost including the assembly kits Just contact us to schedule the work for you We shall be pleased to answer any technical queries you may have, now or at any time in the future As controllable gas springs include parts which are specially made to specific stroke length, we recommend that you keep reserve systems in stock to avoid the risk delay when the need arises 2·17244· 2001· 1 ▼ Subject to alterations 2489.14 2489.16 Controllable Gas Springs 2489.13 2489.14 KF (Rückfederung max mm) KF (max spring back mm) Stroke max spring travel Pr es s max press stroke g rin s Ga sp Time max Spring back mm KF 2489.13 2489.16 + 2489.16 KF2489.14 KP-System (ohne Rückfederung) KF+KP system (without spring back) Stroke max spring travel Pr es s max press stroke g rin KF KF Aktiv active s Ga sp time no spring back Ventilblock valve block 2·17245· 2001· 1 ▼ KP KP passive Passiv Subject to alterations Controllable Gas Springs 2489.14 Description of the components 2489.13 2489.14 Active gas springs KF 2489.14 The KF controlled Gas Spring 2489.14 can be locked in its bottom position The Gas Spring consists of a cylinder (1), a guide (2), the piston and piston rod assembly (3), return valves (6), and internal piston rod (4) and a cartridge valve in the bottom of the Gas Spring (5) There is also a version with a cooling jacket (7) (see pp 15 & 52) There are three ports in the base of the Gas Spring: two nitrogen (1) and (3), connected to the gas cavities in the Gas Spring, and a compressed air port (4) for the compressed air to operate the cartridge valve Port (1) is used for emptying the Gas Spring via the passive GDF (KP), port (3) for filling it with nitrogen Compressed air applied at port (4) closes the cartridge valve In the absence of air pressure the valve opens Compressed air port Druckluftanschluss 2·17246· 2001· 1 ▼ 2489.14 2489.14 Nitrogen ports Stickstoffanschlüsse Subject to alterations 2489.16 Passive gas springs (KP) 2489.16 Controllable Gas Springs 2489.16 2489.16 The passive KP gas spring 2489.16 is used to prevent the KF gas spring(s) springing back The KP gas spring must not be used in the operational working area of the tool, but must be compressed by the tool The passive gas spring consists of one cylinder (1), a guide (2) and piston and piston rod (3) The piston divides the gas spring into two gas compartments, the upper (4) and the lower (6) The upper compartment has four G 1/8” ports (5), the lower a G1/8" gas filling port (7) 2·17247· 2001· 1 ▼ Subject to alterations Controllable Gas Springs 2489.00.47.01 Valve block with no facilities for filling or emptying (2489.00.47.01) Filling port This valve block is used for controlling the flow of gas from the KF Gas Spring to the KP Gas Spring This valve block must be used with control fitting 2480.00.31.01 for filling or emptying nitrogen The valve block consists of a block (4), return valves (2) and a cartridge valve (6) The block has two ports (1,3) for connecting to the KF Gas Spring(s) and a port (5) for connecting the passive KP spring The compressed air port (C) is used for controlling the cartridge valve C Valve block 2489.00.47.01 Emptying Anschluss zur port Entleerung 2·17248· 2001· 1 ▼ Filling port Befüllanschluss 10 Subject to alterations 2·17254· 2001· 1 ▼ 16 Subject to alterations Controllable Gas Springs 2·17255· 2001· 1 ▼ Selecting the components Subject to alterations 17 Controllable Gas Springs 2489.14 2489.16 Selecting the components This section describes step by step how to select the various components for a complete KF system As each tool offers different options, the step by step procedure should be followed in each case Components Information to select components Catalogue page Additional information Components KF - max spring back mm or KF+KP - no spring back Catalogue page 11 - 12 Components Force per gas spring Number of gas springs Filling pressure Stroke (4-167 mm) Stroke rate (strokes/min) Cooling required Catalogue page 24 Select the components for your system Use the information pages, then decide on the system you need, and the parameters and components We shall be pleased to answer any queries you may have Fill in the order form list (KF on p 20, KF + KP on p 21) and for each component you select enter the order code and the number you require Step Type of system, KF or KF + KP The KF system has a locking function with a maximum spring back of mm If you need to eliminate spring back totally use a KF + KP system A KF system can be converted into a KF + KP system by the addition of a KP spring Step 2.1 KF gas springs 2489.14 Technical data KF gas springs not work like traditional gas springs KF springs generate heat which is determined by the force (filling pressure), stroke and stroke rate If the filling pressure is less than 80 bar then a low pressure cartridge valve is required 13- 14 24 52 The full stroke length of the KF gas spring must always be used Step 2.2 KP gas spring 2489.16 Technical data The passive KP gas spring must not be used in a tool A maximum of four KF gas springs can be linked to one KP gas spring Step 2.3 Valve block Catalogue page Components Valve block Catalogue page 36 25 2·17256· 2001· 1 ▼ Every KP gas spring must have a valve block connected Components Size of gas spring 25 Stroke used 18 Subject to alterations 2489.14 2489.16 Step 3.1 Control system Check whether there is a pneumatic signal or an electrical signal (24 V) available from the press In either case the control valves need compressed air (at least bar) to control the cartridge valves Do not connect more than four KF gas springs to one control valve Step 3.2 Overheating protection Fit a thermal relay to protect the gas springs from overheating Step 4.1 Filling and emptying gas in the KF system KF Gas Springs can be used independently of each other or in conjunction with each other For each KF Gas Spring two hoses are required: one for filling and one for emptying Step 4.2 Filling and emptying gas in the KF + KP system KF and KP gas springs must always be connected to each other You need hoses of different sizes for filling and emptying Step Fixing We recommend that you use the tapped bore in the base of the gas spring for fixing Alternatively you could use the mounting variations 2480.055./057./007 Step Cooling system Components Pneumatic signal from the press or Electrical signal from the press Pneumatic hose, blue Compressed air connections Example Catalogue page Components Thermal relay Catalogue page 44 Components Control unit Measuring hose Measuring connector Example Catalogue page 37 38 39 33 Components Valve block + control unit Control fitting for KP Gas Spring Gauging hose Gauging coupling 24° cone hose 24° cone hose adapter Example Catalogue page 36 - 37 37 38 39 41 40 35 Components Fixings Catalogue page 24 - 25 main catalogue standard parts, chapter F Components Cooling unit 10 kW / 25 kW Gas cooler 1,5 kW Connections Hose Connector block Quick-release coupling Catalogue page 58 53 - 57 61 61 60 60 31 29 29 - 30 28 2·17257· 2001· 1 ▼ cooling systems are available - cooling unit, external - gas cooler Choose the cooling system according to the cooling capacity you require Controllable Gas Springs Subject to alterations 19 Controllable Gas Springs KF order list Customer: Comment: Tool no.: Technical contact: Tel: Fax: Step Technical data information required daN Components KF gas spring yes no Step Filling and emptying gas in the KF system Order no 2489.00.42.06.11 xx 2489.00.70 Number m Step Fixing Components Fixings 20 Number bar mm Step Control system Components Control valve Electrical/pneumatic Compressed air hose, blue Compressed air connections Compressed air connections Compressed air connections Compressed air connections Thermal relay Order no 2489.14 Components Control unit Gauging hose Gauging hose Gauging hose Gauging hose Gauging coupling G1/8" Order no 2489.00.31.01 Number 2480.00.24.01 Step Cooling system Order no Number Components Cooling unit 10 kW Cooling unit 25 kW Gas cooler 1,5 kW Hose connector Hose connector Hose, blue, Ø 16 Hose, red, Ø 16 Distributor block Hose, blue, Ø 23 Hose, red, Ø 23 Connector block Quick connector, plug Quick connector, socket Order no 2489.00.50.10 2489.00.50.25 2489.00.20.15 Number 2489.00.52.16.11 2489.00.52.16.12 2489.00.54 2489.00.52.23.11 2489.00.52.23.12 2489.00.55 2489.00.56 2489.00.57 2·17258· 2001· 1 ▼ Components Force per gas spring Number of gas springs Filling pressure Stroke (4-167 mm) Stroke rate (strokes/min) Cooling required Step KF gas springs Subject to alterations ... work pieces of different sizes Subject to alterations Controllable Gas Springs Introduction Controllable gas springs (KF springs) are gas springs which can be locked in their bottom position The... 2489.16 Passive gas springs (KP) 2489.16 Controllable Gas Springs 2489.16 2489.16 The passive KP gas spring 2489.16 is used to prevent the KF gas spring(s) springing back The KP gas spring must... of port press at the gas springs t beginning of return stroke of gas spring gas springs KF2 gas spring or the 2489.00.40 pneumatic control valve for active Compressed gas springs air signal A