EN 14886:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Rubber and plastics machines - Bandknife cutting machines for block foams - Safety requirementsMachines pour les matieres plastiques et le caoutchouc - Machines de coupe a couteau ruban pour blocs de mousse - Prescriptions de sécuritéKunststoff- und Gummimaschinen - Bandmessermaschinen für Blockschaum - SicherheitsanforderungenTa slovenski standard je istoveten z:EN 14886:2008SIST EN 14886:2008en,fr,de83.200ICS:SLOVENSKI
STANDARDSIST EN 14886:200801-junij-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14886February 2008ICS 83.200 English VersionPlastics and rubber machines - Bandknife cutting machines forblock foams - Safety requirementsMachines pour les matières plastiques et le caoutchouc -Machines de coupe à couteau ruban pour blocs de mousse- Prescriptions de sécuritéKunststoff- und Gummimaschinen -Bandmesserschneidmaschinen für Blockschaum -SicherheitsanforderungenThis European Standard was approved by CEN on 12 January 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14886:2008: E

Noise test code.75 A.1 Introduction.75 A.2 Determination of the A-weighted emission sound pressure level at the operator’s position.75 A.3 Determination of the A-weighted sound power level.75 A.4 Installation and mounting conditions for noise measurement.76 A.5 Operating conditions.76 A.6 Measurement uncertainty.76 A.7 Information to be recorded and reported.76 A.7.1 Information to be recorded.76 A.7.2 Information to be reported.76 A.8 Declaration and verification of noise emission values.77 Annex B (normative)
Prohibition sign: "No access".78 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC.79 Annex ZB (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC.80 Bibliography.81

1 Scope This European standard applies to machines that are designed specifically to cut, split or peel block foams to commercially required shapes, using a single or double cut.
All hazards listed in clause 4 are covered by this document. Cutting of block foams may be by:
 vertical cutting;
 horizontal cutting;
 inclined cutting;  transverse cutting;
 contour cutting; or  a combination of the above. The material to be cut may be supported or transported by:  a fixed table;  a shuttle table;  a conveyor;  a turntable;  rollers;  mandrel; or  a combination of the above.
Cutting can be either manual or automatic. Cutting tools can be:  smooth-edged or toothed bandknives;  cutting wires. Movement of the cutting tool can be either oscillating or continuous in one direction.
This European Standard does not apply to:  laser and water jet cutting;  hot wire cutting;  wood, metal and food cutting machines.

This document is not applicable to bandknife cutting machines manufactured before the date of its publication as an EN. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 294:1992, Safety of machinery - Safety distances to prevent danger zones to be reached by the upper limbs EN 349, Safety of machinery -Minimum gaps to avoid crushing of parts of the human body EN 811, Safety of machinery - Safety distances to prevent danger zones being reached by the lower limbs EN 894-1, Safety of machinery - Ergonomics requirements for the design of the displays and control actuators - Part 1: General principles for human interactions with displays and control actuators EN 894-2, Safety of machinery - Ergonomics requirements for the design of displays and control actuators - Part 2: Displays EN 894-3, Safety of machinery - Ergonomics requirements for the design of displays and control actuators - Part 3: Control actuators EN 953, Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards
EN 954-1:1996, Safety of machinery – Safety-related parts of control systems - Part 1: General principles for design EN 1760-2, Safety of machinery - Pressure sensitive protective devices - Part 2: General principles for the design and testing of pressure sensitive edges and pressure sensitive bars EN 1760-3, Safety of machinery - Pressure sensitive protective devices - Part 3: General principles for the design and testing of pressure sensitive bumpers, plates, wires and similar devices EN 12413, Safety requirements for bonded abrasive products EN 13236, Safety requirements for superabrasives EN 60204-1:2006, Safety of machinery - Electrical equipment of machines - Part 1: General requirements (IEC 60204-1:2005, modified) EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 61310-1, Safety of machinery - Indication, marking and actuation - Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:1995)

3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 manual cutting machine
cutting machine on which the material to be cut, or the table on which it is placed, is moved by the force applied by the operator
3.2 automatic cutting machine
cutting machine where cutting is achieved without force being applied by the operator
3.3 tilting cutting machine
cutting machine where the bandknife can make either a vertical or an inclined cut
3.4 side guide
vertical or inclined surface, against which the material to be cut is supported
3.5 grinding unit
machine subassembly for sharpening the bandknife

3.6 freehand cutting process in which the material to be cut is moved directly by hand
3.7 bandknife tool that performs the cutting process
3.8 cutting zone exposed part of the bandknife, where cutting can take place
3.9 profile cutting machine machine used for profiling foam sheets; the sheets are fed towards the bandknife by means of two profile rollers 3.10
splitting machine machine used for cutting blocks or slabs into sheets or foils; the material is usually fed towards the bandknife by two feed rollers or by a table or a conveyor
3.11 compression cutting machine machine used for producing parts from material which is compressed by a conveyor belt and one or more pressure rollers into a template fixed on the machine table 3.12 peeling machine machine for producing a foil from foam material rotating on a mandrel; the material may be fed towards the bandknife by one or more pressure rollers 3.13 cross-cutting machine machine used for cutting long foam blocks into shorter ones; it can be a stationary machine (off-line cross-cutting machine) or a machine travelling synchronously with the block foam in the foaming line (in-line cross-cutting machine)
3.14 grinding area area where the operator stands while grinding the bandknife 3.15 impeding device any physical obstacle, attached to the floor or the machine structure, e.g. low barrier, rail, trip wire, which, without totally preventing access to the hazard zone, reduces the probability of access to this zone by offering an obstruction to free access

4.1.4 Hazards due to failure of the control system 4.1.5 Hazards generated by noise Hazards from high noise levels resulting in tiredness, interference with speech communications or with the perception of acoustic signals. 4.1.6 Fire hazard generated by flying sparks while grinding the bandknife 4.1.7 Hazard due to inhalation of harmful dusts created by cutting Harmful dusts may be emitted when certain materials are being cut.

4.3 Additional hazards or general hazards which require particular protective measures on automatic bandknife cutting machines 4.3.1 Bandknife cutting machines with turntable (carousel) (Figure 4) 4.3.1.1 Mechanical hazards 4.3.1.1.1 Cutting by the moving bandknife 4.3.1.1.2 Cutting due to unintentional contact with the bandknife at rest 4.3.1.1.3 Shearing and crushing during vertical movement of the cutting unit 4.3.1.1.4 Crushing and/or shearing and/or impact and/or drawing-in caused by movement of the turntable 4.3.1.1.5 Whiplash of the bandknife if it breaks 4.3.1.1.6 Slipping or tripping on the turntable, falling from the turntable 4.3.1.1.7 Cutting by the bandknife outside the grinding unit during manual intervention at the grinding unit

4.3.2.1 Cutting by the moving bandknife 4.3.2.2 Cutting due to unintentional contact with the bandknife at rest 4.3.2.3 Shearing and crushing and/or impact due to horizontal movement of the cutting unit
4.3.2.4 Crushing and/or shearing due to the feed or tilting movement of the power operated side guide Such hazards may exist between the side guide and the guards at the front and rear side of the machine. 4.3.2.5 Whiplash of the bandknife if it breaks
4.3.3 Horizontal bandknife cutting machines
4.3.3.1 Horizontal bandknife cutting machines where the cutting is achieved by moving the material (Figure 6, Figure 7, Figure 8 and Figure 9) 4.3.3.1.1 Mechanical hazards 4.3.3.1.1.1 Cutting by the moving bandknife On horizontal bandknife cutting machines with manual take off of single sheets, material may wrap around the pressure roller during splitting. The operator might try to prevent a wrap around of the sheet by reaching over the pressure roller and this may lead to the operator being drawn in towards the bandknife by the pressure roller (Figure 10).
4.3.3.1.1.2 Shearing and crushing during vertical movement of the cutting unit 4.3.3.1.1.3 Impact caused by table movement
4.3.3.1.1.4 Whiplash of the bandknife if it breaks 4.3.3.1.1.5 Cutting by the bandknife outside the grinding unit during manual intervention at the grinding unit
4.3.3.1.1.6 Drawing-in at the transfer points between the reversing table or conveyor and ancillary loading or unloading conveyors (Figure 8 and Figure 9) 4.3.3.1.1.7 Crushing at the transfer points between the reversing table and ancillary loading or unloading conveyors (Figure 9) 4.3.3.1.1.8 On horizontal bandknife cutting machines with manual take off of single sheets, drawing-in between the knife guide and the material during the return movement of the table or conveyor 4.3.3.1.2 Electrical hazards For horizontal bandknife cutting machines with manual take off of single sheets, cutting certain types of material may generate electrostatic charges.

4.3.3.2.2 Cutting by the bandknife (moving or at rest) 4.3.2.2.3 Shearing, crushing and impact caused by vertical movement of the table(s) or conveyor(s)
4.3.4 Horizontal bandknife cutting machines for block trimming
4.3.4.1 Top trimming Same hazards as in 4.3.3.1. 4.3.4.2 Bottom trimming (Figure 12) Same hazards as in 4.3.3.1, plus cutting by the bandknife when the operator reaches upwards from underneath the bandknife to collect the trimmed skin. 4.3.5 Vertical bandknife cutting machines for block trimming (Figure 13, Figure 14 and Figure 15) 4.3.5.1 Cutting by the moving bandknife 4.3.5.2 Cutting due to unintentional contact with the bandknife at rest 4.3.5.3 Shearing, crushing and/or impact generated by the horizontal movement of the cutting unit
4.3.5.4 Whiplash of the bandknife if it breaks
4.3.5.5
Cutting by the bandknife outside the grinding unit during manual intervention at the grinding unit 4.3.6 Contour cutting machines
4.3.6.1 Horizontal contour cutting machines (Figure 16, Figure 17, Figure 18 and Figure 19) 4.3.6.1.1 Cutting by the moving bandknife 4.3.6.1.2 Shearing and crushing during vertical movement of the cutting unit 4.3.6.1.3 Impact caused by table movement 4.3.6.1.4 Whiplash of the bandknife if it breaks 4.3.6.1.5 Cutting by the bandknife outside the grinding unit during manual intervention of the grinding unit 4.3.6.1.6 Drawing-in at the transfer areas between the reversing table or conveyor and ancillary loading or unloading conveyors (Figures 16 and Figure 17) 4.3.6.1.7
Crushing at the transfer areas between the reversing table and ancillary loading or unloading conveyors (Figure 16 and Figure 17)

4.3.6.2.2 Cutting due to unintentional contact with the bandknife at rest 4.3.6.2.3 Crushing or drawing-in at the transfer areas of ancillary loading or unloading conveyors 4.3.6.2.4 Whiplash of the bandknife if it breaks 4.3.7 Profile cutting and splitting machines (Figure 21 and Figure 22) 4.3.7.1 Mechanical hazards 4.3.7.1.1 Drawing in by the two rollers and subsequent cutting by the bandknife; drawing-in between a roller and fixed parts of the machine, at the front, rear and the sides of the machine
4.3.7.1.2 Shearing, crushing and drawing-in between the lower roller and fixed parts of the machine underneath the table 4.3.7.1.3 Drawing-in and crushing by the upper roller when reaching from the rear of the machine (Figure 21) 4.3.7.1.4 Drawing-in and crushing between the pressure and supporting rollers when reaching from the rear of the machine (Figure 22) 4.3.7.2 Electrical hazards
For splitting machines with manual take off of single sheets, cutting certain types of material may generate electrostatic charges. 4.3.7.3 Hazards generated by neglecting ergonomic principles of machinery design Physiological effects such as musculoskeletal disorders resulting, e.g. from unhealthy postures, excessive or repetitive efforts due to mismatch of machinery with human characteristics and abilities. 4.3.8 Compression cutting machines (Figure 23) 4.3.8.1 Cutting by the moving bandknife 4.3.8.2 Shearing and crushing during vertical movement of the cutting unit 4.3.8.3 Drawing in between the belt or rollers that compress the material and the material itself or the table 4.3.8.4 Impact, crushing and shearing caused by movement of the table 4.3.8.5 Whiplash of the bandknife if it breaks
4.3.8.6 Cutting by the bandknife outside the grinding unit during manual intervention at the grinding unit
4.3.9 Peeling machines (Figure 24)
4.3.9.1 Mechanical hazards 4.3.9.1.1 Cutting by the moving bandknife and drawing-in between the pressure roller and the material

4.3.9.1.4 Cutting by the bandknife outside the grinding unit during manual intervention at the grinding unit 4.3.9.2 Electrical hazards For peeling machines, cutting of certain types of materials may generate electrostatic charges. 4.3.10 Cross-cutting machines (Figure 25, Figure 26, Figure 27 and Figure 28) 4.3.10.1 Cutting by the moving bandknife 4.3.10.2 Shearing, crushing and impact due to movement of the cutting unit 4.3.10.3 Whiplash of the bandknife if it breaks 4.3.10.4 Cutting by the bandknife outside the grinding unit during manual intervention at the grinding unit 5 Safety requirements and/or protective measures 5.1 General requirements and/or measures for bandknife cutting machines
5.1.1 General Bandknife cutting machines shall comply with the safety requirements and/or protective measures of this clause. In addition, they shall be designed in accordance with the principles of EN ISO 12100 (both parts) for relevant, but not significant hazards which are not dealt with by this document (e.g. sharp edges). Unless otherwise specified, safety distances shall be in accordance with EN 294:1992, Table 1 and/or Table 4, EN 349 and EN 811. Guards shall be designed in accordance with EN 953.
The fixing systems of fixed guards shall remain attached to the guards or to the machinery when these guards are removed. NOTE This requirement only applies when Directive 2006/42/EC is in force. Electro-sensitive protective equipment (ESPE) shall be in accordance with type 2 of EN 61496-1:2004. Pressure sensitive edges and bars shall be in accordance with EN 1760-2. Pressure sensitive wires shall be in accordance with EN 1760-3. Where the distance between a guard or impeding device and the table or conveyor is greater than 100 mm, stepping behind the guard or impeding device shall be prevented, e.g. by fixed plates with an inclined surface (45 ± 5)°, see distance A in Figures 1, 2, 3, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 20, 23, 25, 26, 27 and 28. This requirement does not apply to bandknife cutting machines with turntables, profile cutting and splitting machines, nor to peeling machines.

5.1.2.2 Cutting while replacing or changing the bandknife
The machine shall be provided with devices that reduce the risk of being cut while mounting the bandknife, for example support devices, clamps and guides. See 7.1.2.2. 5.1.2.3 Whiplash of the bandknife if it breaks If the bandknife breaks, the bandknife drive shall stop automatically. 5.1.2.4 Cutting and drawing-in at the danger zone inside the grinding unit Hazards in the danger zone inside the grinding unit shall be prevented by:  installation of guards preventing access to the danger zone; and  designing the machine so that grinding the bandknife and adjusting the grindstones can be performed without opening these guards. These guards shall allow a good view of the grinding process. An observation opening covered by a flap is permitted to allow the operator to see the result of adjusting the grindstones, but see 7.1.2.3. 5.1.2.5 Ejection of fragments from a grindstone The guards for the grinding unit shall be constructed to reduce the risk of fragments of grindstones being ejected. Only abrasive products in accordance with EN 12413 or EN 13236 shall be used. See also 7.1.2.3.
5.1.2.6 Hazards due to loss of stability Suitable anchorage points shall be provided on the machine. See also 7.1.2.4.

5.1.3.1 General Electrical equipment shall be in accordance with EN 60204-1:2006, specifically the requirements given in 5.1.3.2, 5.1.3.3, 5.1.3.4, 5.1.3.5 and 5.1.3.6 below. 5.1.3.2 Protection against direct contact Protection against direct contact shall be in accordance with 6.2 of EN 60204-1:2006, with minimum degrees of protection in accordance with EN 60529:1991. 5.1.3.3 Protection against indirect contact Protection against indirect contact shall be in accordance with 6.3 of EN 60204-1:2006. 5.1.3.4 Hazards arising from faults in electrical equipment Electrical equipment located on, or in the vicinity of, the machine shall have enclosures affording protection in accordance with 11.3 of EN 60204-1:2006.
Enclosures shall also meet at least IP54 of EN 60529:1991. 5.1.3.5 Emergency stop equipment Bandknife cutting machines shall be provided with emergency stop equipment that shall be in accordance with the following requirements:  EN ISO 13850 and 9.2.5.4 of EN 60204-1:2006;  EN ISO 13850, category 0 or 1; however, in the case of in-line cross-cutting machines (Figure 27 and Figure 28) the emergency stop shall function in accordance with stop category 1, which means that when the emergency stop actuator is actuated, movement of the bandknife shall continue until the knife guide is outside the material and then all machine movements shall stop;  at least one emergency stop actuator shall be easily reachable from the control panel. 5.1.3.6 Control actuators Control actuators shall be:  located outside the danger zones;  easy for the operator to actuate;  in accordance with EN 894-1, EN 894-2, EN 894-3, EN 60204-1:2006, EN 61310-1 and EN 61310-2. 5.1.4 Hazards due to failure of the control system Safety related parts of the control systems shall be in accordance with category 1 of EN 954-1:1996 for hardwired control systems and with category 2 or 3 for electronic control systems. The braking systems operated by the control system shall be tested regularly. See also 7.1.2.5.

 the bandknife drive system;  conveying systems. Bandknife cutting machines shall be designed and constructed so that risks resulting from the emission of airborne noise are reduced to the lowest level, taking into account technical progress and the availability of means of reducing noise, in particular at source. When designing a machine:  the available information and technical measures for reducing noise at source shall be taken into account;
 it is recommended that the methodology described in EN ISO 11688-1 is considered. NOTE EN ISO 11688-2 gives useful information on noise generation mechanisms in machinery. 5.1.5.2 Noise reduction by protective devices Additional noise reduction may be achieved by:  sound insulating and/or absorbing materials;
 low noise material for/on the bandknife drive wheels if practicable;  sound reducing enclosures around the motors;  silencers on the exhaust of the vacuum system;
 low noise materials for the conveying systems. 5.1.5.3 Information connected with noise hazards The instruction handbook shall give additional information, see 7.1.2.6. See also 7.1.2.7 and Annex A. 5.1.6 Fire hazard generated by flying sparks while grinding the bandknife The grinding unit shall be designed so that dust emission into the environment and flying sparks are reduced as far as possible, e.g. by local exhaust ventilation connected to the grinding unit. The grinding unit and guards shall be designed to reduce accumulation of dust inside the guards. See also 7.1.2.8. 5.1.7 Hazard due to inhalation of harmful dusts created by cutting
When specified by contract that local exhaust ventilation is required, the machine shall be provided with an exhaust failure detection system. The system shall prevent the machine from starting or bring it to a controlled stop in the event of a failure of the exhaust ventilation. See also 7.1.2.9.

Key 1 Height-adjustable guard 2 Fixed back guard 3 Front guard Cutting edge of the bandknife
Figure 1 — Manual vertical bandknife cutting machine

 Access to the usable part of the bandknife from the back of the machine shall be prevented by a fixed guard mounted on the table having a height in accordance with EN 294:1992 Table 2. The guard shall extend horizontally for at least 1 000 mm on each side of the bandknife (see item 2 in Figure 1).  A front guard (see item 3 in Figure 1) shall be fixed to the operator’s side of the table to prevent unintentional contact of the operator’s head with the bandknife. This guard shall have a minimum height of 1 800 mm from the floor and shall extend horizontally for at least 40 mm on each side of the bandknife. When the machine is designed so that the highest possible point of the exposed part of the bandknife is less than 1 800 mm above the floor, the height of the guard may be reduced accordingly.  If the front guard can be moved out of its position for normal operation, as described above, to allow freehand cutting, it shall be interlocked in such a way that the bandknife cannot move unless:  for freehand cutting, the table is locked
in a position in which its front edge is at a horizontal distance ≥ 500 mm from the cutting edge of the bandknife; or  for normal operation, the front guard is in the position described in the fifth indent of this subclause.
See also 7.1.3.2.
5.2.1.1.2 Cutting due to unintentional contact with the bandknife at rest The front guard mentioned in 5.2.1.1.1 also reduces the risk of unintentional contact with the bandknife during loading and unloading. A warning not to climb on the table shall be affixed to the machine. See 7.1.3.3 and Annex B. 5.2.1.1.3 Impact or crushing due to unintentional movement of the table during loading and unloading The table shall be fitted with a locking device to prevent movement of the table during loading and unloading. See also 7.1.3.4. 5.2.1.2 Hazards generated by neglecting ergonomic principles of machinery design The surface of the table shall have a minimum height of 750 mm from the floor.

Dimensions in millimetres
Key
1 Height-adjustable guard
2 Fixed back guard 3 Front guard 4 Fixed guard
Cutting edge of the bandknife Figure 2 — Manual tilting bandknife cutting machine, type 1

Dimensions in millimetres
Key 1 Fixed guard 2 Height-adjustable guard 3 Front guard
Cutting edge of the bandknife Figure 3 — Manual tilting bandknife cutting machine, type 2

5.2.2.1 Mechanical hazards 5.2.2.1.1 Cutting by the moving bandknife Access to the moving bandknife shall be prevented or restricted as follows.  The table shall have a minimum height of 750 mm.  The horizontal distance B as shown in Figure 2 and Figure 3 shall not be less than 1 000 mm.  The bandknife shall be enclosed by fixed guards except for the part necessarily exposed for cutting. To cover the part of the bandknife that runs above the material to be cut the machine shall be fitted with a U-section height-adjustable guard that extends behind the edges of the bandknife (see item 1 in Figure 2 and item 2 in Figure 3). The height-adjustable guard shall be capable of being adjusted to within 50 mm of the table surface in order to provid
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