GB 46035-2025Rubber and plastics machinery - General safety requirements (English PDF)

National Standard of the People's Republic of China

ICS

71.120

Classification

G95

Issued by: State Administration for Market Regulation; Standardization Administration of China

Contents

• 1 Scope1
• 2 Normative references1
• 3 Terms and Definitions2
• 4 General safety requirements and/or protection or risk reduction measures2
• 4.1 General Requirements2
• 4.2 Ergonomics3
• 4.3 Operating Position3
• 4.4 Start, stop and restart functions3
• 4.5 Emergency Stop4
• 4.6 Protective devices4
• 4.7 Electrosensitive protective equipment5
• 4.8 Two-hand control device5
• 4.9 Pressure-sensitive mats, floors, and edges5
• 4.10 Power-operated guards6
• 4.11 Safety-related components of control systems6
• 4.12 Automatic Monitoring6
• 4.13 Moving Parts6
• 4.14 Hose7
• 4.15 Electrical and Electromagnetic Interference7
• 4.16 Overheated parts or materials7
• 4.17 Noise7
• 4.18 Gas, Fume and Dust8
• 4.19 Slips, Trips and Falls8
• 4.20 Hydraulic and pneumatic systems8
• 5 Specific safety requirements for closed rubber mixing mills and plastic mixing mills8
• 5.1 Safety protection against mechanical hazards in the charging area8
• 5.2 Safety protection against mechanical hazards in the transition trough area of tandem internal mixers9
• 5.3 Safety protection against mechanical hazards in the unloading area10
• 5.4 Safety protection against mechanical hazards caused by movement of rotor drive elements10
• 6 Specific safety requirements for open rubber and plastic mixing mills10
• 6.2 Hazards due to reduced braking performance10
• 6.3 Hazards of suction and crushing by roller drive mechanisms10
• 6.4 Suction and crushing hazards between the rubber guard and the rollers11
• 6.5 Additional safety requirements for emergency release of personnel11
• 6.6 Specific requirements for large mixing mills (D >= 400 mm)11
• 6.7 Specific requirements for small mixing mills (D <=.200 mm)14
• 6.8 Specific requirements for medium-sized mixing mills (200 mm < D < 400 mm)16
• 7 Specific safety requirements for rubber and plastic extruders16
• 7.1 Drive and transmission device, screw shaft16
• 7.2 Openings on the barrel16
• 7.3 Hopper16
• 7.4 Single/Double Roller Feeding System16
• 7.5 Stuffing feeding system17
• 7.6 Overvoltage Protection17
• 7.7 Screen Changer17
• 7.8 Melt gear pump17
• 7.9 Exhaust system17
• 7.10 Extruder head17
• 7.11 Horizontal movement of power-operated machinery and its components18
• 8 Specific safety requirements for die face pelletizers in rubber and plastic extrusion lines18
• 8.1 Melt connector, start valve18
• 8.2 Pelletizing area, pelletizing room18
• 8.3 Granular material discharge area/reversing device, cooling and conveying medium outlet area19
• 8.4 Drive motor and transmission area19
• 8.5 Horizontal moving wheel set19
• 8.6 Hazards due to loss of stability19
• 9 Specific safety requirements for traction devices in rubber and plastic extrusion lines19
• 9.1 Feeding area19
• 9.2 Conveying area, driving and power transmission area20
• 9.3 Discharging area20
• 9.4 Falls due to gravity/uncontrolled descent20
• 9.5 Additional requirements for full body access20
• 9.6 Startup and machine setup operations in hazardous areas21
• 10 Specific safety requirements for rubber and plastics calendering machines21
• 10.1 General Requirements21
• 10.2 Preventing entry into the crushing area22
• 10.3 Additional requirements for cleaning23
• 10.4 Hazards caused by transmission systems23
• 10.5 Hazards at the auxiliary rollers24
• 10.6 Hazards caused by auxiliary equipment24
• 10.7 Dynamic movement of engaging/disengaging calenders25
• 11 Specific safety requirements for rubber and plastic injection molding machines25
• 11.1 Hazards arising from mold closing movements in the mold area25
• 11.2 Hazards arising from mold closing movements on the non-operating side of the mold area26
• 11.3 Hazards caused by movements other than mold closing movements during production26
• 11.4 Use of protective devices with control functions28
• 11.5 Safety requirements for machines with descending templates30
• 11.6 Additional requirements for machines where the entire body of the person is accessible between the mold area and the interlocked guard or light curtain30
• 11.7 Additional requirements for machines where the entire human body enters the mold area31
• 11.8 Clamping mechanism area or area behind the movable platen32
• 11.9 Areas outside the mold area and/or the clamping mechanism where the ejector and ejector pins and their drive mechanisms move33
• 11.10 Nozzle Area33
• 11.11 Injection device area34
• 11.12 Product drop area34
• 12 Specific safety requirements for rubber and plastic blade crushers35
• 12.1 Crushing chamber35
• 12.2 Feeding area35
• 12.3 Discharge area36
• 13 Specific safety requirements for rubber and plastic strand pelletizers36
• 13.1 Cutting Chamber36
• 13.2 Feeding device37
• 13.3 Feeding area37
• 13.4 Discharge area37
• 13.5 Starting device37
• 13.6 Water spill hazard37
• 14 Specific safety requirements for rubber and plastic shredders37
• 14.1 Chopping chamber37
• 14.2 Feeding area38
• 14.3 Discharge Area39
• 15 Specific safety requirements for plastic pelletizers39
• 15.1 Granulation Chamber39
• 15.2 Feeding of non-pre-cut materials40
• 15.3 Moving parts of the discharge system40
• 16 Specific safety requirements for flat vulcanizing presses40
• 16.1 Mold Area40
• 16.2 Clamping device area outside the mold area43
• 16.3 Hazards of Power-Operated Die Clamping Systems44
• 16.4 Dangers of Power-Operated Die Changing Devices45
• 16.5 Full body access to the mold area, movable guard or light curtain and flat vulcanizing press45
• 16.6 Flatbed vulcanizing press with full access to the mold area46
• 16.7 Reciprocating/rotary plate vulcanizing press47
• 17 Specific safety requirements for tire shaping and curing presses47
• 17.1 Overview47
• 17.2 Moving the upper part closed (closing movement) and open (opening movement)48
• 17.3 Accidental fall of the mobile upper part at the mold opening limit position48
• 17.4 Accidental fall of the mobile upper part at any position of the mold opening49
• 17.5 Moving the upper locking device to lock or unlock49
• 17.6 Lowering, raising, moving in and out of the tire loading device and/or tire storage device49
• 17.7 Tire mounting device falls in raised position49
• 17.8 Tire removal device movement50
• 17.9 The movement of applying or releasing the clamping force, the movement of the automatic locking and unlocking device of the mold sleeve, the upward and downward movement of the movable mold operating device Downward movement50
• 17.10 When the vulcanizing machine is above the semi-closed position (secondary shaping position), apply pressure of50
• 17.12 Before the steam chamber is unlocked, the pressure in the steam chamber is too high51
• 17.14 Before unlocking, the capsule pressure is too high51
• 17.15 Bladder leakage causes hot water to accumulate between the bladder and the tire51
• 17.17 Rear Inflator51
• 18 Usage Information52
• 18.1 General Requirements52
• 18.2 User Manual52
• 18.3 Mark53
• 18.4 Safety Signs53
• 73 Appendix D (Normative) Type III Protection 76 D.1 Type III protection, movable guard for hydraulic drive system 76 D.2 Type III protection, movable protective devices for electric drive systems 82 D.3 Type III protection, light curtain 100 for hydraulic drive system D.4 Type III protection, light curtain for electric drive system 102 Appendix E (Normative) Validation System 108 E.1 Single Confirmation System 108 E.2 Double confirmation system 108 Appendix F (Normative) Noise Test Procedure 109 F.1 Overview 109 F.2 Measurement of A-weighted emission sound pressure level at the operating position 109 F.3 Determination of A-weighted sound power level 109 F.4 Installation and fixing for noise measurement 110 F.5 Operating Conditions 110 F.6 Recorded Information 110 F.7 Test report information 110 F.8 Notification and verification of noise emission values 110 References112