Plastics and rubber machines - Thermoforming machines - Safety requirements

This European Standard deals with all significant hazards, hazardous situations and events relevant to thermoforming machines for continuous sheet and single sheets of thermoplastics materials, when they are used as intended and under conditions of misuse which are foreseeable by the manufacturer (see Clause 4).
A thermoforming machine may consist of a forming unit or a forming unit linked to one or more additional units. This standard covers the following units:
-   continuous sheet unwind unit;
-   single sheet feed unit;
-   material intake;
-   conveying equipment;
-   heating unit;
-   preheating unit;
-   edge heating unit;
-   component feeding/inserting unit;
-   forming station;
-   finishing station;
-   stacking station;
-   discharge station;
-   residual sheet winding unit;
-   sheet cutting unit.
This European standard does not apply to units mounted upstream or downstream of the thermoforming machine:
-   which have a separate control system; and/or
-   are located separately.
NOTE 1   This European Standard specifies requirements for machines supplied as a single forming unit or a number of units designed to operate as a single machine. Additional units that may be introduced at a later stage should be considered separately applying relevant standards and taking into account any hazards arising through their interaction with the thermoforming machine.
This European Standard does not apply to units which are integrated into form, fill and seal machines. These are covered in EN 415-3:1999.
This European standard does not apply to units which incorporate heating systems which are fuelled by gas.
NOTE 2   Thermoforming machines generally do not create explosive atmospheres. In principle they therefore correspond with line F of Table 2 of the ATEX Guideline and consequently do not fall within the scope of Directive 94/9/EC.
This European Standard is not applicable to thermoforming machines which are manufactured before the date of its publication as EN.

Kunststoff- und Gummimaschinen - Warmformmaschinen - Sicherheitsanforderungen

Gefährdungsereignisse,
die auf Warmformmaschinen für Folien und Platten aus thermoplastischen Materialien
zutreffen, wenn sie bestimmungsgemäß und unter Bedingungen, die vom Hersteller als Fehlanwendung
vernünftigerweise vorhersehbar sind, verwendet werden (siehe Abschnitt 4).
Eine Warmformmaschine kann aus einer Formstation oder aus einer Formstation, die mit einer oder mehreren
zusätzlichen Baugruppen verbunden ist, bestehen. Diese Norm behandelt folgende Baugruppen:
⎯ Folienabwickeleinrichtung;
⎯ Plattenzuführungseinrichtung;
⎯ Materialeinlauf;
⎯ Transporteinrichtung;
⎯ Heizung;
⎯ Vorheizung;
⎯ Randheizung;
⎯ Beschickungs-/Einlegeeinrichtung für Komponenten;
⎯ Formstation;
⎯ Nachbearbeitungsstation;
⎯ Stapelstation;
⎯ Austragsstation;
⎯ Restfolienwickeleinrichtung;
⎯ Folienschneideinrichtung.
Diese Europäische Norm gilt nicht für Baugruppen, die der Warmformmaschine vor- oder nachgeschaltet sind,
und die
⎯ ein eigenes Steuerungssystem haben und/oder
⎯ separat angeordnet sind.
ANMERKUNG 1 Diese Europäische Norm legt die Anforderungen für Maschinen fest, die als Einzelformstation geliefert
werden oder die aus einer Vielzahl einzelner Stationen konzipiert sind und wie eine Einzelmaschine betrieben werden.
Weitere Baugruppen, die in einem späteren Stadium einbezogen werden, sollten unter Beachtung der relevanten Normen
und unter Berücksichtigung jeglicher Gefährdungen, die sich aus dem Zusammenwirken mit der Warmformmaschine
ergeben, gesondert betrachtet werden.
Diese Europäische Norm gilt nicht für Baugruppen, die in Form-, Füll- und Verschließmaschinen integriert sind.
Diese sind in EN 415-3:1999 behandelt.
Diese Europäische Norm gilt nicht für Baugruppen, die Heizungssysteme enthalten, die mit Gas betrieben
werden.
ANMERKUNG 2 Warmformmaschinen erzeugen grundsätzlich keine explosionsfähige Atmosphären. Sie stimmen
daher prinzipiell mit dem ATEX-Leitfaden, Tabelle 2, F, überein und fallen demzufolge nicht unter den
Anwendungsbereich der Richtlinie 94/9/EG.
Diese Europäische Norm gilt nicht für Warmformmaschinen, die vor der Veröffentlichung dieser EN hergestellt
worden sind.

Machines pour les matières plastiques et le caoutchouc - Machines de thermoformage - Prescriptions de sécurité

La présente Norme européenne traite de tous les phénomènes dangereux, situations et événements dangereux significatifs concernant les machines de thermoformage pour film continu et feuilles unitaires de matière thermoplastique, que ce soit en utilisation normale ou lors de mauvais usages raisonnablement prévisibles par le fabricant (voir Article 4).
Une machine de thermoformage peut comprendre une seule unité de formage ou une unité de formage associée à une ou plusieurs unités complémentaires. La présente norme couvre les unités suivantes :
-   dérouleur de film ;
-   unité d'alimentation feuille à feuille ;
-   dispositif d'alimentation de matière ;
-   équipement de transfert ;
-   unité de chauffage ;
-   unité de préchauffage ;
-   unité de chauffage des bords ;
-   dispositif d’introduction/d’insertion de composants ;
-   poste de formage ;
-   poste de finition ;
-   poste d'empilage ;
-   poste de déchargement ;
-   enrouleur de feuille résiduelle ;
-   unité de coupe.
La présente Norme européenne ne s'applique pas aux équipements situés en amont ou en aval de la machine de thermoformage :
-   qui sont commandés séparément ; et/ou
-   qui sont implantés séparément.
NOTE 1   La présente Norme européenne spécifie les prescriptions relatives aux machines livrées sous forme d’une seule unité de formage ou sous forme d’un ensemble d’unités destinées à fonctionner comme une seule machine. Il convient de traiter séparément toute unité supplémentaire ajoutée à un stade ultérieur en appliquant les normes pertinentes et en prenant en compte tout phénomène dangereux provoqué par l’interaction de cette unité avec la machine de thermoformage.
La présente Norme européenne ne s'applique pas aux unités qui sont incorporées dans les machines d'emballage à former, remplir et sceller. Ces unités sont traitées dans l’EN 415-3:1999.
La présente Norme européenne ne s'applique pas aux unités comportant des systèmes de chauffage alimentés au gaz.
NOTE 2   Les machines de thermoformage ne génèrent généralement pas d’atmosphères explosives. En principe, elles correspondent donc à la Ligne F du Tableau 2 de la Directive ATEX et, par conséquent, ne relèvent pas de la Directive 94/9/CE.
La présente Norme européenne n'est pas applicable aux machines de thermoformage qui sont fabriquées avant sa date de publication comme EN.

Stroji za predelavo gume in plastike - Stroji za toplotno oblikovanje - Varnostne zahteve (vključno z dopolnilom A1)

Ta evropski standard obravnava vse velike nevarnosti, nevarne situacije in primere, ki se nanašajo na stroje za toplotno oblikovanje neprekinjenih plošč in enojnih plošč termoplastičnih materialov, kadar se uporabljajo, kot je predvideno, in pod pogoji napačne uporabe, ki jih predvidi proizvajalec (glej točko 4).
Stroj za toplotno oblikovanje je lahko sestavljen iz enote za oblikovanje ali enote za oblikovanje, ki je povezana z eno ali več dodatnimi enotami. Ta standard zajema naslednje enote:
- enote za odvijanje neprekinjenih plošč,
- podajalne enote za enojne plošče,
- dovod materiala,
– transportno opremo,
- grelne enote,
- predgrelne enote,
- enote za gretje robov,
- enote za podajanje/vstavljanje komponent,
- postaje za oblikovanje,
- zaključne postaje,
- postaje za zlaganje,
- postaje za odpadke,
- enote za navijanje ostanka plošč,
- enote za striženje plošč.
Ta evropski standard ne velja za enote, nameščene pred strojem za toplotno oblikovanje ali za njim:
- ki imajo ločen nadzorni sistem in/ali
- so nameščene ločeno.
OPOMBA 1: Ta evropski standard določa zahteve za stroje, dobavljene kot enotna enota ali kot več enot, načrtovanih, da delujejo kot en stroj. Za dodatne enote, ki so lahko uvedene na poznejših stopnjah, je treba upoštevati ločeno uporabo ustreznih standardov in vse nevarnosti, ki bi lahko nastale z njihovo interakcijo s strojem za toplotno oblikovanje.
Ta evropski standard ne velja za enote, ki so vgrajene v stroje za oblikovanje, polnjenje in pakiranje. Te so zajete v EN 415-3:1999.
Ta evropski standard ne velja za enote, ki vsebujejo grelne sisteme, ki za gretje uporabljajo plin.
OPOMBA 2: Stroji za toplotno oblikovanje običajno ne povzročajo eksplozivnih atmosfer. Načelno zato ustrezajo vrstici F preglednice 2 smernice ATEX ter posledično niso predmet Direktive 94/9/ES.
Ta evropski standard ne velja za stroje za toplotno oblikovanje, izdelane pred datumom objave kot EN.

General Information

Status
Published
Publication Date
10-Nov-2011
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Nov-2011
Due Date
15-Jan-2012
Completion Date
11-Nov-2011

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kunststoff- und Gummimaschinen - Warmformmaschinen - SicherheitsanforderungenMachines pour les matières plastiques et le caoutchouc - Machines de thermoformage - Prescriptions de sécuritéPlastics and rubber machines - Thermoforming machines - Safety requirements83.200Oprema za gumarsko industrijo in industrijo polimernih materialovEquipment for the rubber and plastics industriesICS:Ta slovenski standard je istoveten z:EN 12409:2008+A1:2011SIST EN 12409:2008+A1:2011en,fr,de01-december-2011SIST EN 12409:2008+A1:2011SLOVENSKI
STANDARDSIST EN 12409:20081DGRPHãþD



SIST EN 12409:2008+A1:2011



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12409:2008+A1
October 2011 ICS 83.200 Supersedes EN 12409:2008English Version
Plastics and rubber machines - Thermoforming machines - Safety requirements
Machines pour les matières plastiques et le caoutchouc - Machines de thermoformage - Prescriptions de sécurité
Kunststoff- und Gummimaschinen - Warmformmaschinen -Sicherheitsanforderungen This European Standard was approved by CEN on 24 August 2008 and includes Amendment 1 approved by CEN on 29 August 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12409:2008+A1:2011: ESIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 2 Contents Page Foreword .4Introduction .51 Scope .62 Normative references .73 Terms and definitions .84 List of significant hazards . 114.1 General . 114.2 Hazards relating to all units . 114.2.1 Mechanical hazards . 114.2.2 Hazards due to electrical energy . 114.2.3 Hazards due to failure/malfunction of the control system . 114.2.4 Hazards resulting from failure of an energy supply . 114.2.5 Hazards due to failure/malfunction of pneumatic equipment . 114.2.6 Hazards resulting from failure/malfunction of hydraulic equipment . 124.2.7 Hazards resulting from inadequate emergency precautions . 124.2.8 Hazards resulting from noise . 124.2.9 Hazards resulting from inhalation of hazardous dusts, fumes or gases during normal operation . 124.2.10 Hazards due to hot surfaces . 124.2.11 Hazards due to unsuitable ergonomics . 124.2.12 Hazards due to unexpected start up . 124.2.13 Hazards arising when setting the machine . 124.2.14 Hazards arising from access to finishing area during production . 134.2.15 Hazards due to permanent means of access . 134.2.16 Hazards due to laser devices . 134.3 Specific hazards and danger zones relating to individual units . 134.3.1 Continuous sheet unwind unit . 134.3.2 Single sheet feed unit . 144.3.3 Material intake . 144.3.4 Conveying equipment . 144.3.5 Heating, pre-heating and edge heating . 154.3.6 Forming station . 164.3.7 Finishing station . 164.3.8 Stacking station . 164.3.9 Discharge station . 174.3.10 Residual sheet winding unit . 174.3.11 Sheet cutting unit. 185 Safety requirements and/or protective measures . 185.1 General . 185.2 General safety requirements and/or protective measures relating to all units . 185.2.1 Access to danger zones . 185.2.2 Electrical equipment . 195.2.3 !Unintended gravity fall of raised elements" . 205.2.4 Pneumatic equipment . 225.2.5 Hydraulic equipment . 225.2.6 Precautions for emergencies . 225.2.7 Noise . 225.2.8 Inhalation of hazardous dusts, fumes and gases . 235.2.9 Hot surfaces . 23SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 3 5.2.10 Ergonomics . 245.2.11 Unexpected start up . 245.2.12 Setting mode . 245.2.13 Access during production . 245.2.14 Laser devices . 255.2.15 Permanent means of access . 255.2.16 Common safeguarding system . 255.2.17 Fixing systems of fixed guards . 255.3 Specific safety requirements and/or protective measures relating to individual units . 255.3.1 Continuous sheet unwind unit . 255.3.2 Single sheet feed unit . 265.3.3 Material intake . 275.3.4 Conveying equipment . 285.3.5 Heating, pre-heating and edge heating . 295.3.6 Forming station . 315.3.7 Finishing station . 325.3.8 Stacking zone . 335.3.9 Discharge station . 345.3.10 Residual sheet winding unit . 345.3.11 Sheet cutting unit . 356 Verification of safety requirements and/or protective measures . 367 Information for use . 397.1 Marking on the machine . 397.1.1 Minimum marking . 397.1.2 Additional markings . 407.2 Instruction manual . 407.2.1 General requirements . 407.2.2 Hot surfaces . 407.2.3 Use of personal protective equipment . 407.2.4 Noise declaration . 407.2.5 Extraction of dusts, fumes or gases . 417.2.6 Electrostatic phenomena . 417.2.7 Manual handling . 427.2.8 Fire prevention . 427.2.9 Manual intervention at the stacking zone . 427.2.10 Safe cleaning . 427.2.11 Use of acknowledge switch . 427.2.12 !Inspection of electrical drives" . 427.2.13 Single sheet feed malfunction . 427.2.14 !Static holding load" . 42Annex A (informative)
Single sheet machine (alternatively material feed from single sheet magazine or continuous sheet roll) . 43Annex B (informative)
Continuous sheet machine (combined forming and finishing) . 44Annex C (informative)
Continuous sheet machine (separate forming and finishing) . 45Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 47Bibliography . 48 SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 4 Foreword This document (EN 12409:2008+A1:2011) has been prepared by Technical Committee CEN/TC 145 “Plastics and rubber machines”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2012, and conflicting national standards shall be withdrawn at the latest by April 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1, approved by CEN on 2011-08-29. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). !For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document." This document supersedes !EN 12409:2008". According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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.
SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 5 Introduction This document is a type C standard as stated in EN ISO 12100. The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard. SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 6
1 Scope This European Standard deals with all significant hazards, hazardous situations and events relevant to thermoforming machines for continuous sheet and single sheets of thermoplastics materials, when they are used as intended and under conditions of misuse which are foreseeable by the manufacturer (see Clause 4). A thermoforming machine may consist of a forming unit or a forming unit linked to one or more additional units. This standard covers the following units:  continuous sheet unwind unit;  single sheet feed unit;  material intake;  conveying equipment;  heating unit;  preheating unit;  edge heating unit;  component feeding/inserting unit;  forming station;  finishing station;  stacking station;  discharge station;  residual sheet winding unit;  sheet cutting unit. This European standard does not apply to units mounted upstream or downstream of the thermoforming machine:  which have a separate control system; and/or  are located separately. NOTE 1 This European Standard specifies requirements for machines supplied as a single forming unit or a number of units designed to operate as a single machine. Additional units that may be introduced at a later stage should be considered separately applying relevant standards and taking into account any hazards arising through their interaction with the thermoforming machine. This European Standard does not apply to units which are integrated into form, fill and seal machines. These are covered in EN 415-3:1999. This European standard does not apply to units which incorporate heating systems which are fuelled by gas. SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 7 NOTE 2 Thermoforming machines generally do not create explosive atmospheres. In principle they therefore correspond with line F of Table 2 of the ATEX Guideline and consequently do not fall within the scope of Directive 94/9/EC. This European Standard is not applicable to thermoforming machines which are manufactured before the date of its publication as 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 349:1993, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body EN 574:1996, Safety of machinery — Two-hand control devices — Functional aspects — Principles for design EN 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 626-1:1994, Safety of machinery — Reduction of risks to health from hazardous substances emitted by machinery — Part 1: Principals and specifications for machinery manufacturers EN 953:1997, Safety of Machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Pneumatics EN 999:1998, Safety of machinery — The positioning of protective equipment in respect of approach speeds of parts of the human body EN 1037:1995, Safety of machinery — Prevention of unexpected start-up EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principals for design and selection EN 1760-1:1997, Safety of machinery — Pressure sensitive protective devices — Part 1: General principles for the design and testing of pressure sensitive mats and pressure sensitive floors 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 61496-1:2004, Safety of machinery — Electro-sensitive protective equipment — Part 1: General requirements and tests (IEC 61496-1:2004, modified) EN ISO 3744:1995, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994) EN ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 8 EN ISO 11201:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Engineering method in an essentially free field over a reflecting plane (ISO 11201:1995) EN ISO 11204:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Method requiring environmental corrections (ISO 11204:1995) EN ISO 11688-1:1998, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 1: Planning (ISO/TR 11688-1:1995) EN ISO 12100-1:2003, Safety of Machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of Machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003) EN ISO 13732-1:2006, Ergonomics of the thermal environment — Methods for the assessment of human responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1:2006) !EN ISO 13849-1:2008", Safety of machinery —Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) EN ISO 13850:2006, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) EN ISO 13857:2008, Safety of machinery – Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) EN ISO 14122-1:2001, Safety of machinery — Permanent means of access to machinery — Part 1: Choice of fixed means of access between two levels (ISO 14122-1:2001) EN ISO 14122-2:2001, Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms and walkways (ISO 14122-2:2001) EN ISO 14122-3:2001, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders and guard-rails (ISO 14122-3:2001) EN ISO 14122-4:2004, Safety of machinery — Permanent means of access to machinery — Part 4: Fixed ladders (ISO 14122-4:2004) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following apply. 3.1 thermoforming machine machine which renders thermoplastic sheet material formable, by heating, and deforms it either by using vacuum or compressed air with or without the use of a stretching aid, for example, a stretching punch
3.2 continuous sheet unwind unit unit where a continuous sheet roll is clamped and unwound as required by the manufacturing process 3.3 sheet roll continuous sheet wound on a core with or without an integral shaft SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 9 3.4 single sheet feed unit unit which consists of a single sheet magazine and a handling device that picks up sheets individually and feeds them into the material intake of the thermoforming machine 3.5 material intake unit where the orientation and guidance of continuous sheet or single sheets takes place before being grasped by conveying equipment 3.6 conveying equipment device equipped with spikes or clamps, which conveys continuous sheet, or single sheets, in cycles, between various units of a thermoforming machine EXAMPLE Chain conveyor. 3.7 heating unit device which heats the thermoplastic material prior to forming EXAMPLE Heating radiators, contact heating plates, contact heating rolls or hot air installations. NOTE The heating may be integrated into the forming station. 3.8 pre-heating unit device which heats the thermoplastic material upstream of the heating system EXAMPLE Heating radiators, contact heating plates, contact heating rolls or hot air installations. 3.9 edge heating unit device which heats the edges of the continuous sheet or single sheets before they are grasped by the conveying equipment EXAMPLE Radiators, contact heating plates or hot air installations. 3.10 component feeding/inserting unit device for feeding/inserting components other than sheet material 3.11 forming station unit where thermoplastic continuous sheet or single sheets are formed and that includes all devices which:  actuate closing, clamping and opening of moulds;  serve as forming aids, e. g. stretching punches, pre blow boxes etc.;  locate or clamp thermoplastic sheet during the forming process 3.12 mould component in which the continuous sheet or a single sheet is formed 3.13 stretching punch mechanical aid to support the forming process SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 10 3.14 clamping frame frame clamping the continuous sheet or single sheet at the edges during the forming process 3.15 platen part of the machine to which a mould is fixed 3.16 ejector device used to push the finished formed parts out of the mould 3.17 finishing station one or more units where formed parts are punched, cut out, locally formed e. g. rim rolled, or mechanically worked using a tool NOTE The finishing station may be combined with the forming station. 3.18 stacking station unit where formed or cut-out parts are stacked to form larger units prior to removal from the machine 3.19
stacking cage device receiving and stacking the finished parts 3.20 stacking loader device pressing the finished parts into the stacking cage 3.21 stacking unloader device pushing the finished and stacked formed parts out of the stacking cage 3.22 discharge station zone where formed sheet or formed parts, either individually or in larger units, are discharged from the thermoforming machine 3.23 residual sheet winding unit unit where residual sheet, from the finishing station, is wound up 3.24 sheet cutting unit guillotine or other cutting device which cuts sheet in the longitudinal or transverse direction NOTE Sheet may, for example, be cut either before or after the forming station, so as to split formed parts, or after the finishing station, so as to improve scrap handling. 3.25 whole body access access where there is sufficient space for an operator to remain in an enclosed area with interlocked guards closed and/or other protective devices initiated to prevent access SIST EN 12409:2008+A1:2011



EN 12409:2008+A1:2011 (E) 11 3.26 acknowledge switch manually operated switching mechanism, e. g. a key switch, by which the control system is informed, after the opening and closing of guards and/or the actuation of other protective devices, that a danger zone where whole body access is possible is clear before the machine can be started 3.27 cyclic manual intervention intervention by the operator during each working cycle 3.28 non-cyclic manual intervention intervention which occurs only occasionally during the machine operation, e. g. intervention for machine adjustment during continuous operation in automatic mode 4 List of significan
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