Press Brake Guarding Systems

The Fiessler AKAS® IIF Press Brake Safety System is the most sophisticated press brake point of operation safeguarding retrofit available on this planet and was designed to keep your operators safe even working close to the tooling. Fingers, hands, arms and other appendages can be easily injured or lost due to unsafe press brake operation. Utilizing the latest in laser grid sensing technology and positive force circuit control, the AKAS® IIF allows the smallest parts to be handled safely with no significant impact to production. It’s affordable safety that’s constantly on guard and that you can hardly afford to be without.

The AKAS® IIF Laser Protection System has been considered safe by OSHA as an acceptable form of guarding device for hydraulic press brakes under 29CFR 1910.212 and was developed in response to EN12622, IEC61496, OSHA 1910.212 and ANSI B11.3-2012 for press brake tool safeguarding. This system can provide a safer work environment in a small custom installed retrofit package.

  • Innovative tooling grid guarding pattern
  • Completely foot peddle controlled operation
  • UL approved
  • CE certified
  • Innovative safety technology
    • automated tooling calibration
    • box-shaped part bending feature
    • Type 4 patented process control

To date more than 25,000 AKAS® laser safety systems have been sold worldwide as customers demand the Fiessler brand, known for both performance and reliability.  This makes the AKAS® laser  guarding system the most popular retrofit product of this nature available today.

Change over from one punch size to another creates virtually no down time due to the exclusive patented AKAS® automated “smart sense” self-aligning feature. This speedy automated alignment saves our customers hours of labor now spent more productively. The competitor’s alignment methods require more time and patience to make similar tooling height adjustments by hand.  Watch the short video on the home page to understand the safety benefits intelligent control provides workers without interfering with production. See for yourself how this one benefit may make the difference in how much more work you can get done.

In order for the AKAS® press brake safety system to function properly the press brake ram must be designed and function to operate in both fast and slow speed. The forming speed must not exceed 10 mm or .393” per second.  Press brakes must operate in accordance with these specifications or must be serviced to perform as such prior to the AKAS® installation. NOTE: For press brakes that cannot be stopped and reversed using the electric valves, often these functions can be added at additional expense.  On up-acting style press brakes an electric valve must be added by the customer beforehand to retract the beam.  Based on the specific overrun traverse of the particular model press brake the AKAS® integrator will determine the specific safety zone during installation.  As a general rule, the older the model press brake the greater the safety zone required.  The maximum press brake width for the AKAS® IIF is 6 meters or 19.5 feet.

Task

Bending a box without eliminating or reducing the effectiveness of the safety system.

Solution

The exclusive box bending feature benefits operators when making complex parts yet system safety is maintained and die zone guarding is not compromised. The optical safety light grid pattern of the AKAS® is located at the punch tip and another nearby beam work together to prevent the trapping of a part of the body between the moving ram and fixed tools.

Both the transmitter and receiver are fixed to opposite sides of the ram allowing the laser to naturally follow the upper forming tool. Therefore, the hands remain free for handling the slug during operation under continuous protection of the extremities during the whole bending process.

AKAS-LC Press Brake Safety Light

This will not interfere with the operating rhythm.

AKAS-LC Press Brake Optical Safety Light Grid

Function

The safety laser beams are directed across the length of the punch. Box-shaped parts and smallest workpieces can be hand-held during the bending process when the box bending feature is turned on.

Press Brake Safety Laser Beams

Tool Change Over

System for using tools of equal tool heights.

Press Brake Light Laser Safety Tool Change OVer

The case-bending function provides bending of box-shaped items without stopping the bending procedure.

Press Brake Safety Bending Box No Stop

The new AKAS-III Optical Laser Light Guard, for Original Equipment Manufacturers of Press Brakes, provides the ultimate in safety, speed, and customization for your specific press brake safety requirements. From your colors and company logo, to special features and communication options, we can customize the AKAS-III to meet your OEM requirements at a competitive price.

Fiessler has provided over 3,500 AKAS Press Brake Safety Systems to both OEMs and press brake users. Some of the finest press brake manufacturers on the market use Fiessler AKAS Optical Safety Guards as standard. View our Press Brake installation pictures to see for yourself.

The safety solution for the latest generation of press brakes.

Modern press brakes are characterised by large productivity (high closing speed and short overrun traverse), maximum quality with simultaneous user friendliness and optimal safety standards.

AKAS®-III, the press brake safety system with the following advantages:

Very short response time of 0,75 ms reaction time in normal case
(1,5 ms in worst case)
• Minimum overrun traverse.
• Possibility of substantially higher fast speed of the press brake.
• This means higher productivity of the press.

Maximum of safety
• By particularly arranged laser beams for flat and box bending.
• Optimal bending frequencies.

Integrated safety PLC (F)
Capability to connect and monitor directly other safety devices such as Foot pedal, emergency stop, Safety switches for left and right gates, backside safety guarding, monitoring of safety valves and overrun control.

30% Productivity increase
(Comparison without material handling times) in comparison with present solutions. Minimum slow speed way when bending flat material by special arrangement of the laser beams.

High availability
No wearing parts by fully electronic solution.

User-friendly
• Fully automatic adjustment to other tool tools,therefore low safety responsibility for the machine operator when changing the upper tools.
• Box bending function without intermediate stop and unnecessary foot pedal sequences.

83% Time Saving
In relation to manually adjustable systems when changing the tool.

  • Increased productivity due to short reaction time and new special beam arrangement
  • Integrated safety PLC
  • Short change-over times due to all-automatic change over to other tool sizes
  • Supports practical bending cycle

Fiessler AKAS III Optical Laser Light Guard                 Fiessler AKAS III Press Brake Safety Guard Installation

The AKAS® LC functions very similarly to the AKAS® II. However, the AKAS® LC must be manually aligned after changing punch heights. This is a similar process to that of all our major competitors, except for one huge difference. The AKAS® LC once aligned takes into account both vertical and horizontal alignment of the beams eliminating the concern over material thickness adjustment.

The AKAS LC is now being provided as standard on several very well known press brake manufacturers.

AKAS-LC Press Brake Safety LightTask

Bending of sheet metal of small or medium handling geometry:

  • flat-iron sections
  • box-shaped parts
  • using tools of equal tool heights

Solution

The following optical safety light grid AKAS® is located right at the bending level and prevents the trapping of a part of the body between the moving and fixed tools.

Transmitter and receiver are fixed to the ram of the machine and form a LASER-optical safety light grid that follows the ram. Therefore, the hands remain free for handling the slug during operation under continuous protection of the extremities during the whole bending process.

This will not interfere with the operating rhythm.

AKAS-LC Press Brake Optical Safety Light Grid

Function

The safety laser beams are located beneath the tool. Box-shaped parts and smallest workpieces can be hand-held during the bending process.

Press Brake Safety Laser Beams

Tool Change Over

System for using tools of equal tool heights.

Press Brake Light Laser Safety Tool Change OVer

The case-bending function provides bending of box-shaped items without stopping the bending procedure.

Press Brake Safety Bending Box No Stop

If fingers or hands are trapped between the upwards moving sheet metal edge and the ram, the press brake operator is able to react accordingly by releasing or pressing down the AKAS safety foot pedal.

Fiessler AKAS Press Brake Safety Foot PedalThe Fiessler AKAS foot pedal has a hard point. By pressing down the foot pedal until this hard point, the dangerous movement of the press is started. If the AKAS press brake foot pedal is pressed down beyond this hard point, the contact block for the dangerous movement is released, and a safety contact block is opened. The return into its original position is carried out automatically by releasing the pedal. Two separate safety contact blocks (mechanical and electrical) working independently from each other, provide the necessary safe redundancy for the system. Apart from its safety features, the twin safety foot pedal provides a standard pedal for non-safety related features.

Fiessler AKAS Press Brake Automatic Muting System

Fiessler AKAS Transmitter Receiver Press Brake Safety Laser Light Guard

During the bending of large parts, a safety area laser scanner provides a sufficient safety standard. A personal protection field will keep your operators safe, and your mind at ease, while running your press brake or metalworking operation.

Distance between operator and bending level must be at least 39″ or 1000 mm.

  • Flexible adjustment by programmable protective field
  • Personal protection field up to 4 m & object protective field up to 15 m
  • Object recognition 0- 15 m distance & contour mensuration up to 50 m
  • IP 65

Safety Laser Scanner Gragh

The Proximity Laser Scanner FLSC is a scanning distance sensor. With it, persons and objects can be recognized inside a defined protection field. A pencilled LASER beam is deflected by a rotating mirror. With it, a circular area with a aperture angle of 180 degrees and a radius of approx. 15 m is scanned.

Safety Laser Scanner Protection

The semicircular area is divided in two recognition areas:

– Personal protective recognition area:
Radius 4m

– Object recognition area:
Radius 15 m

In every recognition area a protective field can be fixed. The form of the protective field is independently eligible resp. programmable: This delivered with communication software enables to fix the form of the respective protective field with a PC on your own. The coordinates of the protective fields are saved in the Proximity Laser Scanner FLSC. The Proximity Laser Scanner FLSC compares the measured data with the saved protective fields, and recognizes, if a object is in a protective field.

Proximity Laser Scanner Safety for Person

If the emitting beam meets an object inside the working field (person or thing), it will be reflected. A part of the reflected diffuse radiation is collected by the receiving part of the Proximity Laser Scanner FLSC.

DIMENSIONS

Fiessler Safety Laser Scanner Dimensions

Standard light curtains

While the AKAS system can meet the majority of safety applications for press brakes, it is not always the answer. For those applications which fall outside the AKAS “area of expertise” Fiessler offers a fine line of traditional light curtains.

 Additionally, Fiessler offers cascading light guards for the protection of punch presses, shears and rear entries of press brakes and punch presses.

Fiessler Press Brake Safety Light Curtain

BLVT

The BLVT light curtain prevents the pinching of a part of the body between the tools of a press brake and the inserted metal sheet. The transmitter and receiver of the safety light curtain generate a protecting field that is located at least 10mm in front of the bending level. Eleven (11) different easy to program blanking functions allow the use of the flat sheet metal work pieces moving within the protective field without causing any unwanted machine stoppage.

he FPSC Fiessler Programmable Safety Center is a programmable electronic safety controller for personal protection, i.e. for safety functions. The FPSC control complies with the highest safety requirements:

  • SK1 up to SK4 according to EN 954-1
  • SIL 1 up to SIL 3 according to EN IEC 61508
  • PL a up to PL e according to prEN 13849-1

Fiessler Programmable Safety Center Controller

The product family FPSC provides maximum flexibility within its hardware and software structure. The FPSC – AD version offers the possibility to connect decentralized I/O modules via the implemented safe bus system. This guarantees a modular system design that offers flexibility therefore reducing the costly and often elaborate configuration of the safe system bus.

The safety-related functions are programmable by using pre-assembled and tested software modules. The chaining is made by simple assignment of input , i.e. output addresses. Intermediate data are stored in the temporary storage. There are various ready-to-use software modules at your disposal.

For the communication with a superior control, i.e. for the operating sequence control or technology control, a serial interface is provided. The transfer of data for visualizing as well as the transfer of machine-relevant data can be realized via this interface The simple snap-on mechanism for fastening the items on a top hat rail in the control cabinet considerably reduces the installation expenditure of the items of the product family.

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