oSIST prEN ISO 12643-3:2020

Graphic technology - Safety requirements for graphic technology equipment and systems - Part 3: Binding and finishing equipment and systems (ISO/DIS 12643-3:2020)

This part of ISO 12643 provides safety requirements specific to binding and finishing equipment and systems. This part of ISO 12643 shall be used in conjunction with ISO 12643-1. It is intended to be used in conjunction with the general requirements given in ISO 12643-1.
This part of ISO 12643 provides additional safety requirements for the design and construction of new equipment used to convert printed or blank substrates into cut, folded, collated, assembled, bound, or otherwise finished product. It can also be applicable to processes for preparing substrate for the printing process.
It is applicable to a wide range of equipment used in the binding and finishing process.

Graphische Technik - Sicherheitsanforderungen an Ausrüstungen und Systeme der graphischen Technik - Teil 3: Ausrüstungen und Systeme in der Buchbinderei und Druckweiterverarbeitung (ISO/DIS 12643-3:2020)

Technologie graphique - Exigences de sécurité pour les systèmes et l'équipement de technologie graphique - Partie 3: Systèmes et équipement de reliure et de finissage (ISO/DIS 12643-3:2020)

Grafična tehnologija - Varnostne zahteve za grafično tehnološko opremo in sisteme - 3. del: Oprema in sistemi v knjigoveznici in grafični dodelavi  (ISO/DIS 12643-3:2020)

General Information

• Status: Not Published
• Public Enquiry End Date: 03-May-2020
• ICS: 37.100.10 - Reproduction equipment
• Technical Committee: GRT - Graphical technology
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 26-Feb-2020
• Due Date: 15-Jul-2020
• Completion Date: 05-May-2020
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: prEN ISO 12643-3 - Graphic technology - Safety requirements for graphic technology equipment and systems - Part 3: Binding and finishing equipment and systems (ISO/DIS 12643-3:2020)

Relations

• Revised: SIST EN 1010-4:2004+A1:2009 - Safety of machinery - Safety requirements for the design and construction of printing and paper converting machines - Part 4: Bookbinding, paper converting and finishing machines
• Effective Date: 19-Jan-2023
• Revised: SIST EN 1010-3:2003+A1:2009 - Safety of machinery - Safety requirements for the design and construction of printing and paper converting machines - Part 3: Cutting machines
• Effective Date: 01-Apr-2020

Overview

prEN ISO 12643-3 (ISO/DIS 12643-3:2020) is a CEN/ISO technical document that specifies safety requirements specific to binding and finishing equipment and systems. It is intended to be used in conjunction with ISO 12643-1 (general requirements). The part focuses on the design and construction of new equipment used to convert printed or blank substrates into cut, folded, collated, assembled, bound or otherwise finished products, and can also apply to substrate preparation for printing.

This draft international standard covers a wide range of machines in graphic technology and provides guidance on identifying significant hazards, guarding, interlocks, verification and information for use.

Key Topics

• Scope and application: Safety requirements for equipment used in binding and finishing processes; to be used together with ISO 12643-1.
• Significant hazards: Identification and treatment of hazards specific to binding and finishing operations.
• Guarding and interlocks: Design and implementation principles for guards, interlocks and guard locking, including exceptions for inching and production speeds where specified.
• Machine-specific guidance: Additional requirements and safeguarding guidance for key equipment such as:
  • gathering machines and feeders
  • perfect binders (including gluing units and milling heads)
  • paper drills, book signature presses and book presses
  • sheet-folding machines, trimmers and three-knife trimmers
  • guillotine cutters (knife cycles, clamping, backgauge and pile supports)
  • laminators, coaters and other finishing machines
• Verification and testing: Procedures for verifying safety requirements and risk reduction measures.
• Information for use: Required content for instruction handbooks and user information specific to each machine type.

Applications

This standard is targeted at manufacturers, machine designers, safety engineers and compliance teams involved in the graphic technology sector. Practical uses include:

• Designing safer binding and finishing equipment to meet harmonized safety expectations.
• Implementing appropriate guarding and interlock strategies for production lines.
• Preparing technical documentation and instruction handbooks required for safe operation.
• Verifying safety-related control systems (e.g., temperature control in gluing units) and emergency stop arrangements.

Adoption of ISO/DIS 12643-3 helps reduce operator risk, supports regulatory compliance and improves machine usability and maintainability across finishing and binding operations.

Related Standards

• ISO 12643-1 - General safety requirements for graphic technology equipment and systems (to be used in conjunction with Part 3).
• Relevant national regulations and the Machinery Directive (as noted in Annex ZA) where applicable.

For implementation, consult the full prEN ISO 12643-3 text for detailed clauses, normative annexes and machine-specific requirements before applying measures to production equipment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2020
Grafična tehnologija - Varnostne zahteve za grafično tehnološko opremo in
sisteme - 3. del: Oprema v knjigoveznici in grafični dodelavi ter sistemi (ISO/DIS
12643-3:2020)
Graphic technology - Safety requirements for graphic technology equipment and
systems - Part 3: Binding and finishing equipment and systems (ISO/DIS 12643-3:2020)
Graphische Technik - Sicherheitsanforderungen an Ausrüstungen und Systeme der
graphischen Technik - Teil 3: Ausrüstungen und Systeme in der Buchbinderei und
Druckweiterverarbeitung (ISO/DIS 12643-3:2020)
Technologie graphique - Exigences de sécurité pour les systèmes et l'équipement de
technologie graphique - Partie 3: Systèmes et équipement de reliure et de finissage
(ISO/DIS 12643-3:2020)
Ta slovenski standard je istoveten z: prEN ISO 12643-3
ICS:
37.100.10 Reprodukcijska oprema Reproduction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 12643-3
ISO/TC 130 Secretariat: SAC
Voting begins on: Voting terminates on:
2020-02-11 2020-05-05
Graphic technology — Safety requirements for graphic
technology equipment and systems —
Part 3:
Binding and finishing equipment and systems
Technologie graphique — Exigences de sécurité pour les systèmes et l'équipement de technologie
graphique —
Partie 3: Systèmes et équipement de reliure et de finissage
ICS: 37.100.10
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 12643-3:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020

ISO/DIS 12643-3:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Significant hazards . 4
5 Guarding of significant hazards . 5
5.1 General . 5
5.2 Interlocks . 5
5.2.1 Interlocking with guard locking . 5
5.2.2 Exception for machine motion at inching speed . 6
5.2.3 Exception for machine motion at production speed . 6
5.3 Guarding of hoppers and hopper feeders . 7
5.3.1 Manually loaded hoppers . 7
5.3.2 Guarding of automatically fed hoppers . 7
5.3.3 Protection of unused hoppers and hopper feeders . 7
5.3.4 Separating elements on hopper feeders . 7
5.4 Guarding on binding and finishing machines . 7
5.4.1 Hand-fed riveting, eyeletting and attaching machines. 7
5.4.2 Hand-fed flat- and saddle-stitching machines . 8
5.4.3 Gang stitchers and drum stitchers . 9
5.4.4 Gathering machines .11
5.4.5 Perfect binders .13
5.4.6 Paper drills .15
5.4.7 Book signature presses .17
5.4.8 Book press .17
5.4.9 Sheet-folding machines .18
5.4.10 Book production lines for the production of hard-cover books .19
5.4.11 Back-rounding and pressing machines .20
5.4.12 Backlining and head-banding machines.20
5.4.13 Casing-in (case-binding) machines .21
5.4.14 Book-cover crease-forming machines (presses) .23
5.5 Inserting and collating machines .23
5.6 Counter-stackers .24
5.6.1 Safeguarding divert gates (waste separator) .24
5.6.2 Safeguarding hazard points at turntable .24
5.6.3 Pneumatic system .24
5.7 Paper-embossing machines .24
5.7.1 Safeguarding in-running nips on guide rollers .24
5.7.2 Stretch rollers and counter rollers .25
5.7.3 Safeguarding movement of counter roller .25
5.7.4 Insulation of heated parts .25
5.8 Finishing machines.25
5.8.1 Coaters .25
5.8.2 Laminators .27
5.9 Guillotine cutters .30
5.9.1 Knife cycles .30
5.9.2 Interruption of cutting cycles .30
5.9.3 Clamping .31
5.9.4 Failure of knife and clamp linkages .31
5.9.5 Backgauge .32
5.9.6 Guarding front (operating side) of a guillotine.33
ISO/DIS 12643-3:2020(E)
5.9.7 Pile-support angles (jogging blocks) .37
5.9.8 Knife changing and adjustment .37
5.9.9 Hazards from integral feeding and delivery equipment on guillotine cutters .38
5.10 Trimmers .40
5.11 Three-knife trimmer with manual infeed .40
5.12 Onserters/attaching machines .41
5.13 Overcover/protective wrapper gluers .41
5.14 Corner-rounding machines .41
6 V erification of the safety requirements and/or protective/ risk reduction measures .42
7 Information for use .45
7.1 Contents of instruction handbook.45
7.1.1 Information for gang stitchers .45
7.1.2 Information for gathering machines .46
7.1.3 Information for perfect binders .46
7.1.4 Information for sheet folding machines .47
7.1.5 Information for inserting machines .47
7.1.6 Information for machines for the production of envelopes.47
7.1.7 Information for guillotine cutters .47
7.1.8 Information for integral feeding and delivery equipment for guillotine cutters .48
7.1.9 Information for trimmers .48
7.1.10 Information for corner-rounding machines .48
7.1.11 Information for contact with hot surfaces above 65°C .48
Annex A (normative) Safety distance of ESPDs on guillotine cutters and three knife
trimmers with manual infeed .49
Annex B (informative) List of significant hazards.50
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered .59
Bibliography .61
iv © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 130, Graphic technology.
This third edition cancels and the second edition (ISO 12643-3:2010). The main changes compared to
the previous edition are as follows:
— In 5.2 Inclusion of requirements for interlocks (Clause in ISO 12643-1 deleted)
— In 5.4.4 Addition of requirements on feeders and feeding sections at gathering machines
— In 5.4.5 Revision of the requirements on safety-related control systems for temperature control and
temperature monitoring in the gluing unit at perfect binders
— In 5.4.5.7 Addition of requirements for safeguarding milling head cutters at perfect binders
— In 5.4.5.9 Addition of requirements for emergency stop at perfect binders
— Throughout the document, deletion of requirements related to hazards dealt with in ISO 12643-1
(Inclusion in the List of significant hazards)
— In 5.4.5 Revision of the requirements on safety-related control systems for temperature control and
temperature monitoring in the gluing section for hardcover lines
— In 5.9.2 Addition of requirements for retraction of knife and clamp at guillotine cutters
— The equation for the calculation of the minimum safety distance at guillotine cutters was moved to
Annex B.1 as it also refers to new Clause on three-knife trimmers with manual infeed
— Addition of a new Clause 5.11 Three-knife trimmers with manual infeed
— List of significant hazards moved to an informative Annex A
— Addition of Annex ZA: Relationship between this European Standard and the essential requirements
of Directive 2006/42/EC
— Reference to ISO 13849-2 was added in Bibliography
ISO/DIS 12643-3:2020(E)
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
A list of all parts in the ISO 12643 series can be found on the ISO website.
vi © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events
are covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or
type-B standards, the requirements of this type-C standard take precedence over the requirements of
the other standards for machines that have been designed and built according to the requirements of
this type-C standard.
During the development of this document, existing relevant standards of other countries were taken
into consideration. An effort has been made to harmonize the requirements of all countries, recognizing
that national standards or laws may dictate national requirements. In cases where it was known that
there is a national requirement that differs from this document, that has been noted.
DRAFT INTERNATIONAL STANDARD ISO/DIS 12643-3:2020(E)
Graphic technology — Safety requirements for graphic
technology equipment and systems —
Part 3:
Binding and finishing equipment and systems
1 Scope
This part of ISO 12643 provides safety requirements specific to binding and finishing equipment and
systems. This part of ISO 12643 shall be used in conjunction with ISO/FDIS 12643-1:2020. It is intended
to be used in conjunction with the general requirements given in ISO/FDIS 12643-1:2020.
This document provides additional safety requirements for the design and construction of new
equipment used to convert printed or blank substrates into cut, folded, collated, assembled, bound,
or otherwise finished product. It can also be applicable to processes for preparing substrate for the
printing process.
It is applicable to a wide range of equipment used in the binding and finishing process.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
1)
ISO/FDIS 12643-1:2020, Graphic technology — Safety requirements for graphic technology equipment
and systems — Part 1: General requirements
ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection
ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction of
fixed and movable guards
ISO 14123-1:2015, Safety of machinery — Reduction of risks to health from hazardous substances emitted
by machinery — Part 1: Principles and specifications for machinery manufacturers
ISO 14123-2:2015, Safety of machinery — Reduction of risks to health from hazardous substances emitted
by machinery — Part 2: Methodology leading to verification procedures
IEC 62061:2005, Safety of machinery — Functional safety of safety-related electrical, electronic and
programmable electronic control systems
EN 1539:2015, Dryers and ovens in which flammable substances are released — Safety requirements
1) Under preparation.
ISO/DIS 12643-3:2020(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in
ISO/FDIS 12643-1:2020ISO/FDIS 12643-1:2020, ISO 13849-1:2015 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
anti-repeat device
mechanical or electromechanical mechanism that ensures that only one cutting cycle occurs for each
manual activation or automatic cut if the primary stopping system or single-cycle device (3.30) fails
3.2
automatic cutting sequence
programmed succession of clamping operations and/or cutting movements that is initiated by the
operator and proceeds to a specified point without further intervention by the operator
3.3
back-rounding and pressing machine
apparatus for processing book signatures, i.e. for rounding the spine and the trimmed front edge of
book signatures and compressing the resulting signatures
3.4
backgauge
movable device (automatic or manual) on a guillotine cutter, positioned square to the cutting table,
used to stop the stack of material to be cut when the material is pushed into the opening under the
cutting blade by the operator, as well as to determine the dimensions of the cut
3.5
backlining and head-banding machines
〈hard-cover bookbinding〉 equipment for the automatic production of hard-cover books where the
binding together of the signatures is rounded or flat, with glue, gauze, or paper
3.6
book cover crease forming machine
〈hard-cover bookbinding〉 apparatus for creating, under heat and pressure, a permanent bend in the
cover of a hard-cover book, then pressing the entire cover surface
3.7
book press
device used for flattening books
3.8
book signature press
power-operated device used for flattening book signatures, which are fed and aligned manually
3.9
casing-in machine
〈hard-cover bookbinding〉 apparatus for gluing the end papers of the book signatures to the interior
surfaces of the book cover
3.10
clamp
device using pressure to secure product so that it does not move during an operation
2 © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
3.11
coater
finishing machine that applies a predetermined thickness of a liquid substance (e.g. glue, varnish, ink)
on substrates made of paper or a similar material
3.12
counter-stacker
machine for stacking piles of leaflets, books, magazines or newspapers such that the successive layers
are positioned at 180° to the previous layer
3.13
cutting cycle
〈machines with (a) manually driven clamp(s)〉 (3.10) programmed succession of operations that begins
when the knife drive is activated and ends when the knife returns to its retracted position
3.14
cutting cycle
〈machines with (a) power-driven clamp(s)〉 (3.10) programmed succession of operations that begins
when high-pressure clamping is initiated and ends when the knife(knives) and clamp(s) return to their
retracted positions after a single clamp/knife stroke
3.15
cutting zone
three-dimensional space through which any part of the knife(knives) and/or clamp(s) (3.10) travels
during the entire cutting cycle (3.14)
3.16
gang stitcher
machine for stitching folded sheets of paper, during the operation in which individual folded sheets are
removed by feeding grippers and the open sheets are stacked on top of each other on a transport chain
for subsequent back-stitching
3.17
gathering machine
apparatus that assembles sheets or folded sheets in a binding line
3.18
guillotine cutter
power-driven machine having a single knife that is used primarily to cut paper products, stacks of
paper, or other substrates, as specified by the manufacturer
Note 1 to entry: to entry This definition includes equipment classified as mill trimmers.
3.19
high-pressure clamping
operation of clamp(s) (3.10) with a dynamic force in excess of 300 N for machines up to and including
1,6 m in width, or in excess of 500 N for machines greater than 1,6 m in width, when measured at 75 %
of the clamp opening (e.g. with the clamp at 25 % of its maximum travel distance measured from the
retracted position)
Note 1 to entry: to entry The 75 % value is to ensure that the measurement is made at the position that
approximates to the size of an operator's hand.
3.20
inserting machine
apparatus that inserts printed matter such as leaflets and magazines at a predetermined position in
other printed products, such as newspapers or magazines
3.21
knife drive
mechanism by which the knife of the guillotine is forced through the material to be cut
ISO/DIS 12643-3:2020(E)
3.22
laminator
paper-finishing machine that applies a solid material (e.g. foil, paper) to a substrate made of paper or a
similar material
3.23
low-pressure clamping
〈for machines with (a) power-driven clamp(s)〉 (3.10) operation of clamps with a dynamic force not
exceeding 300 N for machines up to and including 1,6 m in width, or not exceeding 500 N for machines
greater than 1,6 m in width, when measured at 75 % of the clamp opening (with the clamp at 25 % of its
maximum travel measured from the retracted position)
Note 1 to entry: to entry The 75 % value is to ensure that the measurement is made at the position that
approximates to the size of an operator's hand.
3.24
manual clamping
operation of clamp(s) (3.10) in which the dynamic and static forces and motion of the clamp are directly
supplied by the operator
3.25
paper drill
machine used to drill holes into piles of paper
3.26
paper-embossing machine
machine for finishing paper surfaces by using cylinders to press a design in relief into the paper
3.27
perfect binder
machine for the automatic production of brochures (soft-cover) or book signatures (hard-cover) where
gathered folded sheets or single sheets are bound to form book or brochure signatures by applying glue
on the pre-processed book back, and where book or brochure signatures are inserted into covers by
gluing the cover on the back and/or sides
3.28
safety distance
minimum distance a protective device is required to be placed from a hazard zone
3.29
sheet-folding machine
apparatus to cut, perforate and/or crease single or multiple folds in single sheets of paper
3.30
single-cycle device
mechanism that ensures that only one cutting cycle occurs for each manual activation or automatic cut
Note 1 to entry: to entry See anti-repeat device (3.1).
3.31
stored energy
potential energy that can be released without actuation of the machine drive or controls
4 Significant hazards
For the list of significant hazards covered by this document, see Annex B.
4 © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
5 Guarding of significant hazards
5.1 General
Guarding, consistent with operation of the machine, shall be provided in those areas where it
is recognized that operators are exposed to significant hazards. The guarding requirements of
ISO/FDIS 12643-1:2020 apply. See Annex B for a list of hazards associated with binding and finishing
equipment and systems.
5.2 Interlocks
5.2.1 Interlocking with guard locking
Interlocking guards shall be designed so that the sensor (interlock) shall be activated within the limits
specified in Table 1, depending on the distance to the hazard. Otherwise, guard locking shall be utilized.
Interlocking with guard locking is also required where the hazardous movement cannot be stopped in
10 s or less after actuation of the position detector.
Table 1 — Requirements for interlocking guards without guard locking
a a
Safety distance , L , between guard Maximum opening , L , of the guard
sr g
opening and hazard point while the detector changes its state
mm mm
<80 ≤30
≥80 and <500 ≤40
≥500 and <850 ≤80
≥850 ≤160
a
See Figure 1 for location of the measurements.

ISO/DIS 12643-3:2020(E)
a) Motor running b) Motor stopped
Key
1 failsafe limit switch
2 guard closed
3 motor
4 guard open
L safety distance
sr
L maximum opening
g
Figure 1 — Distances related to requirements for guard locking
5.2.2 Exception for machine motion at inching speed
If a machine is operating at inching speed and under conditions defined in ISO/FDIS 12643-1:2020,
motion may continue when an interlocked guard is opened.
5.2.3 Exception for machine motion at production speed
This exception shall apply only to the specific machines identified in this document and does not apply
to all equipment.
There might be parts of the equipment that cannot be observed or adjusted with the guard closed
and need to be accessed by an authorized person with an interlocked guard open. Under these
circumstances, the following alternative safety measures shall be taken:
a) A mechanical key lock shall be provided adjacent to the access area. There shall be only one key for
this lock. The key for this lock shall be accessible only by an authorized person.
b) The key lock shall operate as a hold-to-run device as follows:
1) inserting the key shall initiate a timer that has a maximum setting of 2 min;
2) turning the key shall override the guard interlock of only that guard, up to the preset time limit;
3) as long as the key is held in the turned position, the guard may be opened with machine motion
at production speed until such time as the timer reaches the preset time limit;
4) when the key is released, it shall automatically return to the neutral position and the guard
interlock shall be automatically reactivated;
6 © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
5) if the key remains in the lock for a period longer than the preset time limit (which shall not
exceed 2 min), the interlock on the guard shall be reactivated automatically and the equipment
safety system shall stop machine motion.
c) The bypassing means shall be in accordance with at least ISO 13849-1:2015, PL d or
IEC 62061:2005, SIL 2.
d) When adjustments are necessary, they shall be performed from outside the hazardous area.
e) A safety sign identifying the possible existing hazards with the guard open shall be provided
adjacent to the lock. The label shall clearly indicate that, when the key is in the lock, the adjacent
guard is overridden.
If a machine is equipped with this alternative safety measure, information regarding its safe use shall
be contained in the instruction handbook.
5.3 Guarding of hoppers and hopper feeders
5.3.1 Manually loaded hoppers
On machines using manually loaded hoppers, the hazard points on the separating elements of the
hopper feeder shall be safeguarded in accordance with 5.3.4. The exception defined in 5.2.2 can be
applied to the hopper feeder, if necessary.
5.3.2 Guarding of automatically fed hoppers
On automatically fed hoppers where manual intervention during normal operation is not required and
the material used makes access difficult, tunnel-type guards arranged with a safety distance of 550 mm
from the nearest hazard point are considered adequate.
The exception defined in 5.2.2 can be applied to the hopper feeder, if necessary.
5.3.3 Protection of unused hoppers and hopper feeders
For hoppers that are not used and cannot be stopped, blanking boards shall be provided to safeguard
the hazard points at the separating elements.
5.3.4 Separating elements on hopper feeders
The hazard points on separating elements outside the sidelays on feeders shall be safeguarded for every
format size used.
For hazard points within sidelays, residual pile monitoring that is also used as a safety device shall be
in accordance with at least ISO 13849-1:2015, PL d or IEC 62061:2005, SIL 2.
NOTE This safeguarding can be achieved, for example, by using accordion-type bellows or by the use of
additional guards.
5.4 Guarding on binding and finishing machines
5.4.1 Hand-fed riveting, eyeletting and attaching machines
Hazard points between tools on riveting, eyeletting and attaching machines either shall be prevented
by design or shall be safeguarded.
Means to satisfy this requirement include, but are not limited to, the following:
— observing a maximum distance of 4 mm between the tools in the open position;
ISO/DIS 12643-3:2020(E)
— ensuring that the closing force of the movable tool is less than 50 N; a stronger closing force is
allowed to become effective only after a sensing device has confirmed that no part of a human body
is located between the two tools.
NOTE The sensing device function, for example, can be based on the fact that the workpiece and a body part
have different electrical resistances or different thicknesses.
Hazard points are safeguarded if guards are provided in accordance with ISO 13857:2019 or the
machine can be started only by two-hand control.
For machines that are not guarded by a fixed or movable guard, a workpiece support shall be provided,
and two-hand controls meeting the requirements of ISO/FDIS 12643-1:2020 shall be used. If the
workpiece needs to be held by hand outside the hazard zone, a hold-to-run control shall be provided for
starting the machine instead of the two-hand control.
5.4.2 Hand-fed flat- and saddle-stitching machines
Adjustable guards shall be provided on flat-stitching, saddle-stitching and combination-stitching
machines for operational reasons (see Figure 2 and Figure 3). Instructions that describe the safe
adjustment of the guards in a clear and easily understandable format shall be provided on the machine.
NOTE This marking requirement is satisfied, for example, by providing safety signs that illustrate the safety
distances required for the various stitching thicknesses by means of sketches and measurements.
On combination-stitching machines in the saddle-stitching mode, the guard for the upper tool shall
extend to the height of the upper edge of the lower tool (upper edge of the saddle) and shall enclose the
upper tool to prevent inadvertent access (see Figure 3).
Guarding can be by either two separate guards or a combined reversible guard. Combined reversible
guards shall be suitable for saddle stitching as well as for flat stitching.
Key
1 upper tool
2 guard
Figure 2 — Flat stitcher
8 © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
Key
1 upper edge of saddle
2 guard
3 workpiece
Figure 3 — Saddle stitcher
5.4.3 Gang stitchers and drum stitchers
5.4.3.1 Feeders on gang stitchers and drum stitchers
Depending on the design, fixed guards, movable guards, residual-pile monitoring or other means of
guarding can be used (see Figure 4).
Where the bottom of the feeder on the transport channel side (see Figure 5) needs to remain open for
functional reasons, the lower edges of the guards on the transport channel side shall be extended as
low as technically feasible.
EXAMPLE An example of a “functional reason” would be for the use of air vortexes.
The exception defined in 5.2.2 can be applied to the feeder, if necessary.
ISO/DIS 12643-3:2020(E)
Key
1 transport chain
2 feeder
3 thickness control
4 stitching unit
5 trimmer
Figure 4 — Gang stitcher
Key
1 hopper
2 bottom of feeder
3 transport chain
Figure 5 — Feeder
5.4.3.2 Guarding stitching section of gang stitchers
Hazard points on the stitching section shall be safeguarded by interlocked guards on the operator's
side. The other side shall be guarded in accordance with ISO/FDIS 12643-1:2020. Guard apertures shall
be in accordance with ISO 13857:2019.
The transport pins shall be made of a flexible material to prevent a shearing hazard against the guard.
10 © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
5.4.3.3 Caliper roll
Where an in-running nip exists on the caliper roll used for thickness control (see Figure 6), one or both
of the following means of protection shall be used:
— maximum clamping force of 50 N with roller deflection at 20 mm;
— guarding in accordance with ISO/FDIS 12643-1:2020.
The transport pins shall be made of a flexible material to prevent a shearing hazard against the guard.
Key
1 folded sheets
2 in-running nip of caliper roll
3 transport chain
Figure 6 — Caliper roll for thickness control
5.4.3.4 Transport-chain pushers on gang stitchers
A safety distance of at least 25 mm shall be maintained between transport-chain pushers and fixed
machine parts.
5.4.3.5 Starting gang stitchers and drum stitchers with a guard open
Gang stitchers and drum stitchers may be started for make-ready by means of a two-hand control
with interlocking guards in the open position and machine motion at a speed greater than 10 m/min,
provided that the requirements of the exception to 5.3.6 in ISO/FDIS 12643-1:2020 are met.
5.4.3.6 Trimmer on gang stitchers and drum stitchers
The trimmer on gang stitchers and drum stitchers shall be safeguarded in accordance with 5.10.
5.4.4 Gathering machines
5.4.4.1 General
Gathering machines shall be guarded in accordance with 5.4.4.2 and 5.4.4.3. The exception defined in
5.2.2 can be applied, if necessary.
ISO/DIS 12643-3:2020(E)
5.4.4.2 Guarding transport chains
For safeguarding the hazard points on the manual feeding unit, a minimum distance of 25 mm is
required between the transport chain and fixed machine parts. Where the minimum distance cannot
be achieved and maintained, trip bars meeting the requirements of ISO/FDIS 12643-1:2020 may
be used for safeguarding. Hazard points that can be reached from the manual feeding section in the
following feeder shall be safeguarded by fixed or interlocking tunnel-type guards (see Figure 7) having
a minimum length of 300 mm.
Hazard points on the gathering device (transport device) shall be safeguarded by fixed or
interlocking guards.
Key
1 hopper
2 manual feeding
3 gathering device (transport device)
4 following machines
5 tunnel guard
Figure 7 — Gathering machine (plan view)
5.4.4.3 Starting gathering machines with a guard open
Gathering machines may be started for make-ready by means of a two-hand control with interlocking
guards in the open position and machine motion at a speed greater than 10 m/min, provided that the
requirements of the exception to 5.3.6 in ISO/FDIS 12643-1:2020 are met.
5.4.4.4 Feeder
When feeding manually, the hazardous zones of the separating elements of the feeder shall be
safeguarded in accordance with ISO 12643-1, 5.3.10.5, and residual pile monitoring that is also used
as a safety device shall be in accordance with at least ISO 13849-1:2015, PL d or IEC 62061:2005, SIL 2.
5.4.4.5 Feeding section
For feeding sections that are not used and cannot be stopped, blanking boards of maximum format size
shall be provided to safeguard the hazardous zones at the separating elements instead of the blanks.
These boards shall ensure that the machine is not stopped by the residual pile monitoring system.
12 © ISO 2020 – All rights reserved

ISO/DIS 12643-3:2020(E)
5.4.4.6 Emergency stop system
An emergency stop device shall be provided. Additional emergency stop devices or stop/safe
pushbuttons shall be provided on each main control panel and at least within 5 m intervals.
5.4.5 Perfect binders
5.4.5.1 Guarding bo
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