GB/T 39932-2021Footwear manufacturing machines—Cutting and punching machines—Safety requirements (English PDF)

5.2.3.3 Noise reduction instructions

If the noise reduction study at the design stage shows that after all possible technical measures have been taken, the emitted noise level is still at a very high level.

In the high state, the operator should take further protective measures and add note information in the product instructions (see 7.4).

5.2.4 High pressure medium

In order to prevent high-pressure liquid injection or components from bursting and flying out, the hydraulic and pneumatic systems of the machine should comply with GB/T 15706-2012 The provisions of 6.2.10 can also be in accordance with the provisions of 5.4.5 of GB/T 3766-2015 and Chapter 9 of GB/T 7932-2017.

5.2.5 Control system

5.2.5.1 All machines should be equipped with start and stop control devices in the work area. If any other factors are involved, these devices It should automatically enter a security protection state.

a) The hydraulic control system should meet the requirements of 5.3.2, 5.4.1~5.4.8 in GB/T 3766-2015;

b) The pneumatic control system should meet the requirements of 4.3 in GB/T 7932-2017;

c) The electrical control equipment should meet the requirements of 5.2.2, and the control requirements for specific equipment are shown in 5.3;

d) The design of the display and control indicator should meet the requirements of ISO 9355-1:1999 and ISO 9355-2:1999.

5.2.5.2 When a machine with electro-sensitive protection equipment is installed, the device can automatically restart the working cycle under the following conditions.

a) The device detects that a safe operating state has been restored;

b) There should be periodic channels for each working cycle;

c) It is impossible for the operator to stand inside the protective area;

d) The working cycle time is less than 1min.

In the above circumstances, the protection of the machine should be in accordance with the provisions of GB/T 19436.1-2013, and the fourth type of protection device should be used.

The relevant components of the system should meet the "e" performance level defined in Table 2 of GB/T 16855.1-2018.

5.2.5.3 When a periodic channel is required for normal operation, in addition to meeting the following conditions, it should also comply with Type IIIC in Table 1 of GB/T 19671-2005 The two-hand control device and the tripping device of Appendix C can be used as protective devices.

a) The control system components related to start or restart should meet the "e" level performance defined in Table 2 of GB/T 16855.1-2018 Level;

b) The design of the pneumatic or hydraulic system should meet the requirements of Appendix D. when a component fails, it should not cause unexpected danger Action; At the same time, its related parts and components should meet the "c" performance level defined in Table 2 of GB/T 16855.1-2018.

5.2.5.4 When a periodic channel is not required for normal operation, the components related to the start or restart of the control system shall at least comply with GB/T 16855.1-2018 table 2 defined "d" performance level.

a) If electronic position sensors are used, these sensors should meet the requirements of GB/T 14048.10-2016;

b) Separate pressure, time, and program control instructions are not allowed.

5.2.5.5 The design of non-electrical safety-related parts in the control system shall comply with.

a) Have the same safety performance level as the protective device used;

b) Meet the requirements of Appendix D, and meet the "c" performance level defined in Table 2 of GB/T 16855.1-2018.

5.2.5.6 The design of electrical safety-related parts and components in the control system shall comply with the The requirements for the start-up function should be at least in compliance with the "d" performance level defined in Table 2 of GB/T 16855.1-2018.

In the case of the programmable electronic system (PES), the safety level specified in this standard should not be reduced, and at the same time, it is related to safety The function cannot only rely on single-channel PES, this situation can be achieved through the following ways.

a) Hard wire control system;

b) Repeated solid state relay switching (not programmable);

c) Programmable electronic system with established safety level.

5.2.5.7 When the dangerous action is independent of these control systems, the dangerous area should be entered only after the mechanical action is completely cut off. At this moment The provisions of 5.2.5.4~5.2.5.6 will no longer apply.

5.2.5.8 When a machine designed with multiple operating modes or a machine that can be protected by multiple safety devices, it shall be in accordance with GB/T 15706- In 2012, the control modes of 6.2.11.9 and 6.2.11.10 are used to select reliable devices.

a) Control mode. automatic operation, manual operation, tool change mode, setting mode;

b) The mode selection itself cannot start the operation, and the operator should make the next instruction to start it.

5.2.6 Emergency stop device

For all machines except 5.3.10, the power cut-off device can be used for emergency stop. See 10.7.3 of GB/T 5226.1-2019.

5.2.7 Ergonomics

The ergonomic principles described in 6.2.8 of GB/T 15706-2012 should be fully considered in the design. The following items should also be considered.

a) The height of the operator.

b) The posture and movement of the operator.

c) Physical strength of maintenance personnel.

d) The accessibility and coordination of the control indicator should meet the requirements of ISO 9355-1:1999.

e) The means for operators to enter the work area should comply with the regulations of GB/T 18717.1-2002 and GB/T 18717.2-2002 set. If necessary, a suitable platform that complies with GB/T 17888.2-2020 should be provided. The platform should have no slope and at the same time Its surface should be covered with non-slip material.

f) The overall lighting should meet the requirements of GB/T 28780-2012.

5.2.8 Hazard indicators

The adopted hazard indication signals and functional audiovisual indication signals shall comply with the provisions of GB/T 1251.3-2008.

5.3 Specific equipment requirements

5.3.1 Manual rocker hydraulic cutting machine

5.3.1.1 A type IIIA two-hand control device defined in Table 1 of GB/T 19671-2005 shall be provided, and shall be provided in accordance with GB/T 19876-2012 stipulates that the device is installed on the rocker arm; at the same time, the relevant parts of the control system should comply with Appendix D and comply with GB/T 16855.1-2018 Table 2 defined "c" performance level.

5.3.1.2 The maximum stroke of the rocker arm allowed for single-handed control is 8mm. The operator should actively choose according to 5.2.5.8, and should also meet the following requirements. Additional conditions.

a) The control system should include an automatic transfer switch, which automatically switches to two-hand control when the rocker arm stroke exceeds 8mm;

b) Any single failure cannot start the cutting stroke;

c) Any single failure cannot start the transfer switch to switch the operation from two-handed control to single-handed control;

d) No single failure can prevent the switch from one-handed control to two-handed control;

e) If a single failure occurs in the stroke sensing device, the failure should allow the system to automatically switch to two-hand control;

f) There should be an automatic switching indicator for the operator to see to show whether it is in one-handed control mode or two-handed control mode.

5.3.1.3 There should be a chamfer of no more than 3mm×45° at the lower edge of the cutting surface of the upper cutting platen, or a backing plate of similar material should be installed.

Instead, the hardness of the backing plate is not less than HB150, its front, left, and right sides are flush with the lower edge of the upper cutting pressure plate, and the thickness is not less than 12mm.

5.3.1.4 The force to pull the rocker arm should not exceed 25N (the thrust is measured at the handle).

5.3.1.5 The height from the ground to the work surface (not including the cutting pad) is (1000 ± 30) mm.

5.3.1.6 Preventing mechanical hazards related to the danger zone T and L (see Figure 2) should be in accordance with the following combination.

a) The combination of 5.3.1.1, 5.3.1.2, 5.3.1.4 and 5.3.1.5;

b) The combination of 5.3.1.1, 5.3.1.3, 5.3.1.4 and 5.3.1.5.

5.3.2 Motorized rocker arm hydraulic cutting machine

5.3.2.1 A type IIIA two-hand control device defined in Table 1 of GB/T 19671-2005 shall be provided for backup, and the The relevant provisions of GB/T 19876-2012 install the device outside the hazardous area, and the relevant parts of its control system should comply with the appendix D, and meet the "c" performance level defined in Table 2 of GB/T 16855.1-2018.

5.3.2.2 For example, the width of the opening between the parts of the fixed protective device (described in 5.3.2.3) on the front of the motorized rocker arm hydraulic cutting machine is not less than 800mm, should provide type 2 electro-sensitive sensors in accordance with 5.3.3 of GB/T 19436.1-2013 and 4.2.2.3 of GB/T 19436.2-2013 The protection equipment is used to protect the front safety of the work area and is installed in accordance with the provisions of GB/T 19876-2012. At the same time, its control system The relevant parts and components of the system should also meet the requirements of Appendix D, and meet the "c" performance level defined in Table 2 of GB/T 16855.1-2018.

5.3.2.3 Except in the area between the two operating parts of the two-hand control device, it should be on the side and rear of the motorized rocker hydraulic cutting machine.

Fixed spacing protection device is provided on the face and the front. These protective devices should comply with GB/T 23821-2009 Table 2, Table 3, Table 4 and The relevant regulations of GB/T 12265.3-1997 and GB/T 8196-2018. Check the height "a" in Table 2 of GB/T 23821-2009 The reference surface should be the ground on which the equipment is placed (see Figure 3, reference point A), and the danger zone should be half of the front edge of the rocker arm at the highest position.

The arc area drawn by the diameter (see Figure 3, reference point B).

Note: If the distance between the two operating parts of the two-hand control device is not greater than 800mm, there is no need to install electro-sensitive protective equipment (see 5.3.2.2).

5.3.2.4 The height of the cutting material placement area should not be greater than the height of the cutting pad.

5.3.2.5 The movement of the rocker arm shall be restricted within the safety protection zone described in 5.3.2.3. If you want to use a forced stop to restrict its movement, The stop should stop the rocker arm before the rocker arm reaches the minimum distance between the rocker arm and the fence specified in GB/T 12265.3-1997, so that it cannot mobile.

5.3.3 Indenter mobile hydraulic cutting machine

5.3.3.1 The type IIIA two-hand control device defined in Table 1 of GB/T 19671-2005 shall be provided for cutting or punching operations.

It should be installed outside the hazardous area in accordance with the provisions of GB/T 19876-2012; at the same time, the relevant parts and components of its control system should comply with the regulations in Appendix D And meet the "c" performance level defined in Table 2 of GB/T 16855.1-2018.

5.3.3.2 The type IIIA two-hand control device defined in Table 1 of GB/T 19671-2005 shall be provided for horizontal movement of the cutting indenter Operate and install it outside the hazardous area in accordance with the provisions of GB/T 19876-2012; at the same time, the relevant components of the control system should comply with Appendix D It complies with the "c" performance level defined in Table 2 of GB/T 16855.1-2018.

5.3.3.3 There should be an inclined surface not larger than 3mm×45° at the outer edge of the cutting surface of the upper cutting indenter, or add Replace it with a backing plate of similar material. The hardness of the backing plate is not less than HB150, and its surroundings are flush with the lower edge of the upper cutting pressure plate, and the thickness is not small At 12mm.

5.3.3.4 The side and back of the movable indenter hydraulic cutting machine shall be protected by the following devices.

a) The device should comply with the fixed protection device specified in GB/T 8196-2018, and its protection distance shall comply with GB/T 23821-2009 Table 1, Table 3, Table 4 and GB/T 12265.3-1997.

b) The device should comply with GB/T 23821-2009 table 2, GB/T 18831-2017 and the movable interlock protection of this standard A.1 Device. The relevant parts and components of its control system should also comply with Appendix D, and comply with the definition in Table 2 of GB/T 16855.1-2018 "C" performance level.

c) A combination of the above two.

5.3.3.5 Any gap between the upper cutting indenter and the fixing member that may squeeze the fingers should not be less than 30mm. If it is in electro-sensitive protection If any object is detected in the detection area of the equipment, the cutting or restoring action of the cutting surface will be started and stopped.

5.3.3.6 Type 2 electro-sensitive sensors shall be provided in accordance with 5.3.3 of GB/T 19436.1-2013 and 4.2.2.3 of GB/T 19436.2-2013 Protection equipment to protect the horizontal movement of the upper cutting head and the downward cutting action of the cutting surface. At the same time, the relevant parts of the control system shall comply with the […]