GB/T 25432-2025Safety requirements of daylight press (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

This document replaces GB 25432-2010 "Safety Requirements for Flat Vulcanizing Machines". Compared with GB 25432-2010, the only changes are structural adjustments and editing.

Aside from the sexual alterations, the main technical changes are as follows.

a) The terms "magnetic clamping system", "electric drive system", "motor", and "motor control unit" have been added (see Chapter 3);

b) The "Example of a frame-plate structure upward-moving single-layer flat vulcanizing machine" has been deleted (see Figure 7 in the 2010 edition);

c) Increased safety performance level requirements for protective measures (see 4.3.1.1, 4.4.1.1.1, 4.4.1.1.4, 4.4.1.1.5, 4.4.1.1.6);

d) Added "Safe Torque Cancellation (STO)" (see 4.4.1.1.6.1);

e) The normative appendix “Type I Active Interlocking Protective Device” has been deleted (see Appendix A of the 2010 edition);

f) Increased risks of electromagnetic interference and mechanical design failure to adhere to ergonomic principles (see A.3.8, A.3.9);

g) Increased hazards associated with power-operated mold clamping systems and power-operated mold changing devices (see A.5, A.6);

h) Additional hazards related to a specific design have been changed (see A.7, 4.5 of the 2010 edition);

i) The additional hazards associated with the use of assistive devices have been changed (see A.8, 4.6 of the 2010 edition);

j) The normative appendix “Type II Active Interlocking Protective Device” has been amended (see Appendix B, Appendix B of the 2010 edition);

k) The normative appendix “Type III Active Interlocking Protective Device” has been amended (see Appendix C, Appendix C of the 2010 edition);

l) The normative appendix "Light Curtain Type Electronic Induction Protection Device" (see Appendix D of the 2010 edition) has been deleted;

m) A normative appendix, "Confirmation System," has been added (see Appendix D);

n) The normative appendix “Two-handed control device” has been amended (see Appendix E, Appendix E of the 2010 edition);

o) The normative appendix "Use of proportional valves for hot plate motion" has been deleted (see Appendix G of the 2010 edition);

p) The normative appendix “Additional requirements for the second circuit breaker in Figure C.1” has been deleted (see Appendix H in the 2010 edition).

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Petroleum and Chemical Industry Federation.

This document is under the jurisdiction of the National Technical Committee on Standardization of Rubber and Plastics Machinery (SAC/TC71).

This document was drafted by: Yiyang Rubber & Plastics Machinery Group Co., Ltd., Yuyao Huatai Rubber & Plastics Machinery Co., Ltd., and Guangdong Yizumi Precision Machinery Co., Ltd.

Rubber & Plastics Equipment Technology Co., Ltd., Ningbo Qianpu Machinery Manufacturing Co., Ltd., Dalian Rubber & Plastics Machinery Co., Ltd., Qingdao Hailang Special Equipment Technology Co., Ltd., Matsuda Industrial Technology (Wuxi) Co., Ltd., Beijing Rubber Industry Research and Design Institute Co., Ltd., National Plastics Machinery Products Quality Supervision and Inspection Center.

The main drafters of this document are: Xu Zhi, Chen Xingzhong, Shen Gongneng, Li Xiaohai, Hong Jun, Liu Dandan, Sun Youping, Wang Hufa, He Cheng, and Wang Gengxin. Zheng Ji and Wu Jianming.

The release history of this document and the document it replaces is as follows.

— First published in 2010 as GB 25432-2010;

— This is the first revision.

Introduction

According to the classification of GB/T 15706-2012, this document belongs to Class C standards.

This document is particularly relevant to the following stakeholders related to machinery safety.

— Machine manufacturer;

— Health and Safety Agency.

Other stakeholders affected by the level of mechanical safety include.

— Machine users;

— Machine owner;

— Service provider;

— Consumer (when the machine is scheduled to be used by the consumer).

All of the aforementioned stakeholders may participate in the drafting of this document.

The scope of the machinery involved, as well as the hazards, hazardous conditions, and dangerous events covered, is given in the scope of this document.

When the requirements of this document differ from those in Category A or Category B standards, for machines designed and manufactured in accordance with this document...

For this instrument, the requirements of this document take precedence over the requirements of other standards.

1 Scope

This document specifies the safety requirements for the design and manufacture of flat vulcanizing machines for rubber and rubber-plastic blends with a stroke exceeding 6 mm.

This document applies to the entire lifecycle of the flat vulcanizing machine (see section 5.4 of GB/T 15706-2012), during the intended use process.

In addition, all significant hazards related to the flat vulcanizing machine that may arise from misuse that the manufacturer could reasonably foresee, and in cases of such misuse.

Hazardous conditions and hazardous events (see Appendix A).

This document specifies the additional hazards posed by the following devices.

— Reciprocating/rotary tables used for mold loading/unloading and/or cooling;

— Magnetic clamping system.

This document does not include auxiliary devices (3.10), but only covers the interaction between the flat vulcanizing machine and auxiliary devices (especially the mold loading/unloading device).

Additional dangers caused by it.

This document does not cover the following machines.

— Pneumatic rubber and plastic vulcanizing machine;

— Tire shaping and vulcanizing machine;

— Inner tubes and various capsule vulcanizing machines.

This document does not include.

— The material processing process may pose a risk of explosion;

— Requirements for equipment and protection systems used in potentially explosive environments;

— Design requirements for exhaust ventilation systems.

2 Normative references

GB/T 3766-2015

GB/T 3767

GB/T 3768

GB/T 4208

GB/T 5226.1-2019

GB/T 5563-2013

GB/T 7932

GB/T 8196

GB/T 9574-2017

GB/T 12668.501-2013

GB/T 14048.13-2017