JB 10148-1999 Safety technical requirements for sheet metal bending machines
Some standard content:
ICS 25.120
J62
JB
Machinery Industry Standard of the People's Republic of China
JB10148-1999
Sheet metal bending machine
Safety technology Requirements | |tt | |Foreword
This standard is formulated in accordance with GB16755-1997 "Rules for the Preface and Expression of Mechanical Safety Standards", and is classified as Class C safety standard
This standard applies to sheet metal bending machines Design, manufacture and use impose basic safety requirements. This standard is not equivalent to the American National Standard ANS1B11.3-1993 "Safety Technical Requirements for the Manufacturing, Maintenance and Use of Machine Tools - Sheet Metal Bending Machines"
This standard has been implemented since March 1, 2000 The standard is proposed and centralized by the Full Forging Machinery Standardization Technical Committee. This standard was drafted at the expense of Jinan Casting and Forging Machinery Research Institute and Huangshi Forging Machine Tool (Group) Company. The main drafters of this standard: Ma Liqiang and Shang Guohuo. ·'Scope
Machinery Industry Standard of the People's Republic of China
Safety Technical Requirements for Sheet Metal Bending Machines
Pressbrakes-Safetyrequirements This standard specifies the design, manufacture and use of sheet metal bending machines Security requirements. This standard applies to sheet metal bending machines (hereinafter referred to as machines) within the specified service life. 2 Reference standards
JB 101481999
The provisions contained in the following standards are quoted in this standard and constitute the provisions of this standard. Not all editions shown were valid at the time of publication of this standard. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards GB.2893—1982
GB 2894—1996
GB/T 3766—1983||tt ||GB 5083—1999
GB/T 5226.1—1996
GB/T 6527.21986
GB/T 6576—1986
GB/T 7932—1987|| tt||GB/T 14775—1993
GB/T [4776—1993
GB/T 15706.1—1995
GB/T 15706.2—1995
GB/ T 162511996
GB 16754--1997bZxz.net
GB/T 16855.1—1997
GB/T 16856—1997
GB 17120—1997
JB/ T1829—1997
JB/T 3623—1984
JB/T 9954—1999
JB 9976—1999
Safety Color
Safety Mark|| tt||General technical conditions for liquid music system
General principles for safety and hygiene design of production equipment
T industry mechanical and electrical equipment - Part: General technical conditions Safety color usage guidelines
Machine tool lubrication System
General technical conditions for pneumatic systems
General ergonomic requirements for manipulators
Working position size design principles and numerical mechanical safety under ergonomics
Basic concepts and Design General Principles Part: Part: Basic Terminology, Methodology Basic Concepts of Machinery Safety and Design General Principles Part 2: Technical Principles and Specifications Ergonomic Principles of T Operating System Design
Mechanical Safety Emergency Stop Design Principles||tt| |Machinery safety
Control system related safety components! Part: Design General Principles of Machinery Safety Risk Assessment
Safety Technical Conditions for Forging Machinery
General Technical Conditions for Forging Machinery
Forging Machinery Noise Measurement Method
Forging Machinery Hydraulic System Cleaning Degree
Noise limits for sheet metal bending machines and edge removal machines
Approved by the State Machinery Industry Bureau on 1999-10-08 and implemented on 2000-03-01
3 definitions||tt| |JB10148—1999
In addition to the definitions in GB/T15706.1 and GB17120 applicable to this standard, this standard also adopts the following definitions, 3.1 Operation danger zone
The upper and lower molds in relative motion on the machine 4 important hazards
According to the provisions of GB/T16856 and GB/T15706.2, risk assessment is carried out on the machines to which this standard applies. The important hazards that may arise from peach machines are as follows .
4.1 Mechanical hazards
4.1.1 Dangers such as extrusion, shearing, and impact that may occur between the working dies of the machine during operation. 4.1.2 Parts on the machine (such as sliders) may move on their own under the influence of gravity or may cause unexpected movement due to control failure, which may cause extrusion and shearing hazards.
4.1.3 During the working process of the machine, its moving parts (such as various motorized stops, adjustment devices, chain drives, belt drives) may cause squeezing, entanglement, attracting or entraining people, and impact on the human body. Waiting for danger. 4.1.4 Due to shape factors, sharp edges and corners of machines and other parts (such as molds and fuselage) may cause stabbing or puncture risks to the human body.
4.1.5 During use, machine parts (such as flywheels and molds) may become loose, fall off or break, chip, or be used out, which may cause impact and projectile hazards.
4.1.6 Possible ejection hazard caused by high-pressure fluid 4.1.6.1 Danger caused by the maximum working pressure of the hydraulic or pneumatic system exceeding the rated safe working pressure of the system, 4.1.6.2 Possible ejection hazard caused by leakage of the hydraulic or pneumatic system . 4.1.7 When assembling, repairing or maintaining the machine, there may be a risk of falling. Maintenance personnel may be exposed to collisions, pinching and other dangers if the operating space is narrow or the operation is inconvenient. 4.2 Electrical hazards
4.2.1 Direct contact with exposed live parts or parts that become live under fault conditions, especially live parts caused by insulation failure, may cause electric shock, fire, burns and other hazards, 4.2 .2 Risks such as fire and burns caused by circuit overload. 4.3 Thermal hazard
Burns and scalds caused by contact with heat-generating components (such as brakes, clutches, hydraulic systems, etc.). 4.4 Noise and vibration hazards
4.4.1 Due to the excessive noise of the machine, it may cause dangers such as hearing loss, tinnitus, fatigue, mental depression and interference with auditory signals to the operators. 4.4.2 Due to the mechanical vibration surface during work, it may cause The operator is in danger of developing physiological disorders after long-term T. operation. 4.5 Hazards caused by materials and substances
The risk of impact, stabbing or puncture caused by the tilting of the T-piece when bending the workpiece. 4.6 The dangers caused by ignoring human T-effects
, 4.6.1 The dangers that may arise due to ignoring the principles of human T-effects, such as error-prone operating directions, over-stressed operations, etc. 4.6.2 Two or When more than two operators operate the machine. Danger due to uncoordinated operation, JB10148-1999
4.7 Danger due to energy failure, parts damage or other functional failures. 4.7.1 Loss of function of the electrical system may cause the machine to malfunction. 4.7.2 Danger caused by misoperation caused by failure of control components. 4.7.3 The electrical and numerical control systems in the machine have poor anti-electromagnetic interference performance, resulting in possible dangers caused by the machine being unable to operate normally. 4.7.4 Danger caused by pressure loss that may cause out-of-control movement. 4.7.5 Foreign matter in hydraulic and pneumatic pipelines, such as scale, burrs, moisture, etc., may cause component damage, which may cause mechanism failure and the risk of personal injury.
4.7.6 Instability caused by the deviation of the machine's center of gravity. During assembly and transportation, the deviation of the machine's center of gravity and poor stability may cause dangers such as accidental tipping and movement.
4.8 Danger caused by improper safety protection measures 4.8.1 Danger caused by no reliable safety protection device. 4.8.2 Danger caused by lack of reliable energy cut-off device. 4.8.3 Hazards arising from the lack of reliable emergency stop devices. 4.8.4 Hazards arising from accessory surfaces that are not safely adjusted and/or repaired. 5 Safety requirements and/or measures
5.1 General requirements
5.1.1 The design of the machine and its parts must comply with GB5083, GB/T15706.1. The provisions of GB/T15706.2, GB17120 and this standard.
5.1.2 Machines should eliminate hazards or limit risks through design, and shall not leave behind hazards that can be eliminated by design or hazards that can be eliminated by safety protection devices.
5.1.3 Usage information can only be used to address remaining risks that cannot be eliminated or fully reduced through design and for which safety protection devices are ineffective or not fully effective, and shall not be used to make up for design flaws. 5.1.4 The design of the machine should be based on the principles of human T-effects, improve safety by reducing the operator's stress and physical strength required, and should comply with the provisions of GB/T16251, GB/T14776 and other relevant standards. 5.1.5 The strength, stiffness and stability of the main parts of the machine should meet the work requirements, and should not cause breakage or breakage when used according to regulations within the intended service life of the machine. Main parts should be inspected for flaw detection when necessary. 5.1.6 Possible dangers due to damage, looseness, falling of parts and the release surface of mechanical energy (such as the possible accidental falling of the machine slider). Appropriate protective measures should be taken (such as setting up balancing devices, stopping devices, etc.). 5.1. The easily accessible parts of the machine, including the attachments installed on them, should not have sharp edges, sharp corners, or protruding parts that may cause personal injury and may cause scratches without affecting the function of the machine. Openings that injure body parts, etc. 5.1.8 The design of machine parts should minimize the hazards of moving parts. 5.1.9 In addition to the operation danger area, protective measures should also be taken according to the dangerous characteristics of other areas where collision, extrusion, involvement, parts throwing out, liquid injection and other dangerous areas may occur. 5.1,10 When working in dangerous areas or other dangerous areas (such as assembly, adjustment, commissioning, maintenance, lubrication, etc.), if the safety protection device of the machine cannot be guaranteed to be used, preventive measures and backup tools should be taken, and power should be obtained. Providing safety guarantee in terms of source control 5.1.11 High-speed rotating parts on the machine (such as flywheels) should generally undergo static balance or dynamic balance tests, and the residual imbalance should comply with the provisions of 3.5.5 in JBT1829-1997. || tt | .
5.1.13 Reliable anti-loosening measures must be taken for fasteners such as screws, nuts and pins on the machine, which may cause parts to shift or fall due to loosening or falling off. 5.1.14 The bomb used on the machine should comply with the requirements of 17.2 in GB17120-1997. 5.1.15 The loading and unloading of machines and parts during assembly and transportation should meet the following requirements: a) The machine should have reliable safety measures during assembly and transportation to prevent the risk of overturning due to the deviation of the machine's center of gravity: b ) For bulkier parts, such as submersible blocks, molds, cylinders, etc., the safety of operator loading and unloading must be considered, such as setting up visible holes or columns:
c) The machine should be easy for the operator to adjust and change The lower mold is opened and the operation safety should be ensured. 5.1.16 The machine should be equipped with a force or pressure overload protection device according to its structural characteristics. The overload protection device should comply with the requirements of 9.2 in GB17120-1997.
5.1.17 The balancing device on the machine shall comply with the provisions of Chapter 7 of GB17120-1997. 5.1.18 A blocking device should be set up in the rear area of ??the machine to prevent personnel from entering and causing danger. Appropriate safety supervision and control devices should be set up according to the structural performance characteristics of the machine to monitor the safe operation of the machine 5. 1. 19| |tt|| to monitor.
5.1.20
5.1.21
The use of various adjustment mechanisms should be clearly stated. The auxiliary adjustment mechanism of the machine should be interlocked with the movement of the slider. 5.1.22 Asbestos materials are not allowed to be used in the friction plates on the machine. 5.1.23
Measures should be taken to prevent the pneumatic system from emitting oil mist harmful to health. 5.1.24 There should be measures to prompt or prevent the T-added T-piece from causing danger. 5.2 Machine transmission and operation control system
5.2.1 Transmission system
5.2.1.1 The machine transmission system must comply with the provisions of Chapter 5 of GB17120--1997. 5.2.1.2 Protective devices should be installed for exposed transmission parts that may cause danger. There should be no clamping points between the protective devices and moving parts that could injure the human body.
5.2.1.3 The machine requires parts that rotate in one direction to have obvious turning instructions. 5.2.1.4 When the reciprocating slide of a hydraulically driven machine is stopped in an emergency, its inertial drop value should comply with the provisions of relevant standards or technical documents,
5.2.2 Operation control system
5.2 .2.1 The safety requirements for safety components of the machine control system shall comply with the relevant provisions of GB/T16855.1. 5.2.2.2 The machine operation control system must comply with the provisions of Chapter 10 of GB17120--1997. 5.2.2.3 When machines use friction clutches and brakes, they should comply with the provisions of Chapter 6 of GB17120-1997. 5.2.2.4 When machines use friction clutches and brakes, the surface temperature should comply with the provisions of relevant technical documents, and protective measures should be taken 5.2. 2.5 The machine must have a single stroke 7. Operating specifications 5.2.2.6 Machine specifications 1. The selection transfer switch of the operating specifications should be a key-locked transfer switch JB10148—1999
5.2.2.7 The machine has a movable button Station and/or foot pedal device 5.2.2.8 Emergency stop button
5.2.2.8.1 An emergency stop button must be installed on the machine, and its requirements must comply with the requirements of GB/T15706.2-1995 6.1.1 and GB16754 .
5.2.2.8.2 The machine should be equipped with at least two emergency stop buttons at different locations. 5.2.2.9 Interlocking of operation control devices
When a machine has multiple or multiple control devices, only one or one control device can be used at the same time, except for emergency stop. 5.3 Human-powered machines || tt||5.3.! Human-powered machines should be designed so that the slider can only move when the hand lever or foot lever is operated. This mechanism does not allow the slider to move due to the self-weight surface of the hand lever or foot lever.
5.3.2 The return trip of the human machine must be completed by the action of the hand lever or foot lever or by a separate return mechanism such as The spring is used to complete the operation mechanism at this time and should be separated from the movement of the slider.
5.3.3 Human-powered machines must have a locking device for the manual lever or foot lever to prevent accidental movement and malfunction of the machine. 5.4 Electrical, hydraulic, pneumatic and lubrication systems 5.4.1 General requirements||tt ||5.4.1.1 Electrical, hydraulic, pneumatic and lubrication systems should meet their functional requirements. 5.4.1.2 Pipes should not be used as steps and pedals or to support other components. In addition to being fixed at both ends of the pipeline, fixed points should also be added to the pipeline. The fixed spacing should meet the relevant technical requirements, and the fixation should be firm. 5.4. 1.3
of damage. No fasteners, connectors or other parts are allowed to be welded to the pipeline. 5.4. 1.44
If incorrect connection of pipelines may cause danger, the pipelines should be marked. 5. 4. 1.5
No danger may occur due to interruption or restoration of power source (electricity, liquid or gas) or pressure fluctuation. 5. 4. 1.6
5.4.1.7 The layout of components and pipelines should be reasonable and easy to assemble, adjust, repair and disassemble. 5.4.2 Electrical system
The machine must be able to prevent the occurrence of electrical hazards, and its electrical system should comply with the relevant safety regulations in GB/T5226.1 5.4.2.1
5.4.2.2 Electrical and numerical control of the machine The anti-interference performance of the system should comply with relevant standards. 5.4.3 Hydraulic and lubrication systems
5.4.3.1 The hydraulic transmission system of the machine shall comply with the relevant safety regulations in GB/T3766. 5.4.3.2 The system cannot cause danger due to internal leakage or severe pressure loss. 5.4.3.3 There should be no foreign matter (such as scale, burrs, chips, etc.) left in the pipeline. Measures should be taken to ensure the cleanliness of the hydraulic system, and the cleanliness of the hydraulic system should comply with the requirements of JB/T9954. 5.4.3.4 Protective devices should be installed on high-pressure hoses in the operating area. 5.4.3.5 The hydraulic system must be equipped with a safety device to prevent hydraulic overload. 5.4.3.6 After the hydraulic pump is started, it must be ensured that the submersible block should not move downward if the T operating button is not operated. 5.4.3.7 Under normal operating conditions of the machine, the oil temperature at the oil suction port of the oil tank should not exceed 60°C. 5.4.3.8. The machine lubrication system should comply with the relevant safety regulations in GB/T6576. 5.4.4 Pneumatic system
JB10148-1999
5.4.4.1 The pneumatic system should comply with the relevant safety regulations in GB/T7932. 5.4.4.2 The pneumatic system 4 should be equipped with (water separator) and should be installed The oil mist lubricator lubricates the control system. 5.4.4.3 There should be no danger when the gas is discharged. 5.5 Noise and vibration
5.5.1 Measures should be taken to minimize the noise hazard to the electric motor and hydraulic pump. , the mechanical transmission system should take measures to reduce noise
5.5.2 The exhaust port of the pneumatic system should take silencer measures (such as setting up a muffler, etc.) 5.5.3 The noise of the machine should comply with the regulations of JB9976. The measurement method should comply with the provisions of JB/T3623. 5.5.4 The machine should take effective vibration reduction measures. The machine should be reliably installed on the foundation with anchor bolts before use. 5.6 Human T Effects
Various types of T of the machine. The operation and operating mechanism should comply with the provisions of GB/T14775, GB/T14776, GB/T16251 and other relevant human T. efficiency standards
5.7 Safety protection in operation dangerous areas
5.7.1 Safety protection Principle
At least one appropriate safety protection device (including protective device and safety device) should be installed in the dangerous operating area and throat part of the machine to prevent the occurrence of mechanical hazards
5.7.2 Safety protection device
Safety protection devices include protective devices and safety devices. 5.7.2.1 Protection devices
According to the safety protection requirements of the machine, the machine protection devices can be fixed protection devices, movable protection devices, or adjustable protection devices. devices, interlocking protection devices, etc.
5.7.2.2 Safety devices
According to the safety protection requirements of the machine, the machine safety device can be a two-hand control device, such as a two-hand button; an automatic stop device, such as a light type Safety devices, etc.
5.7.3 Requirements for machine safety protection devices 5.7.3.1 Requirements for machine protection devices
The design and manufacturing requirements for machine protection devices should comply with GB/T15706.2-1995. Requirements for machine safety devices specified in 4.2.1, 4.2.2 and 4.2.4 5.7.3.2
Machine safety devices shall comply with the provisions of 4.2.3 in GB T15706.2-1995. 3.2.1 The two-hand operation button shall comply with the provisions of 10.5 of GB171201997. 5.7.3.2.2 The requirements for light safety devices shall comply with the provisions of 13.3.3 of GB17120-1997 ||tt ||5.7.4.1·Safety protection devices that comply with the requirements of 5.6.1 must be installed in the dangerous area of ????the machine. 5.7.4.2 The 11th part of the machine must be equipped with a protective device and should be removable. 5.7.4.3 The safety device on the machine must be at a distance T. The safe distance of the dangerous area should comply with the safety requirements and/or measures specified in GB17120-1997 13.3.4 6.
JB10148-1999
The safety of the machine should be tested, inspected and inspected according to the following methods Whether the performance meets the safety requirements and/or measures of Chapter 5, if one method cannot be judged, another method should be used to judge. Each safety requirement and/or measure must be judged by at least one method. If a safety requirement and/or measure can be judged by multiple methods, the results of the judgments by several methods shall comply with the safety requirements or be incorrect. Otherwise, it will be judged as not complying with the safety requirements and/or measures. 6.1 Functional test
Through the safety function test, check whether the safety performance of the machine meets the safety requirements of Chapter 5 and/or the recommended function test cannot be carried out, it should be carried out according to the method given in 6.2 or 6.3. 6.2 Performance testing
Use testing instruments to hold the device and test whether its safety performance meets the specified safety requirements. If it is impossible to conduct testing to determine whether the safety performance of the machine meets the safety requirements, or if the safety requirements do not have specific index requirements, it should be carried out according to 6.3. 6.3 Check the safety performance through calculation and visual inspection. Check whether the safety performance meets the specified safety requirements (such as stability, center of gravity position, signs, pipelines, etc.) through calculation and visual inspection. The inspection should be scientific. precise.
7 Usage information
7.1 The usage information of the machine should comply with the requirements of Chapter 5 of GB/T15706.2-1995 and Chapter 18 of GB17120-1997. 7.2 The top surface of the machine is more than 3m above the ground. Or at the diagonal corners of the top of the railing of the platform and at the highest point of the components above the railing, red safety lights should be set.
7.3 Signs, symbols, text warnings
7.3.1 The machine should be marked with at least the following clear and durable signs: a) Manufacturer’s name and address:
b) Model name:
c) Basic parameters;
d) Factory date and number:
e) Restriction marks on the use of the machine:
0 Regarding the use of safety devices Feature flag. 7.3.2 There should be obvious warning signs in the dangerous operating area of ??the machine, the throat part, the electrical device and the rear of the machine. Warning signs should comply with the provisions of 18.2 in GB2894 and GB/T5226.1-1996. 7.3.3 When the protective device at the throat is removed, a text warning to the operator must be visible. 7.3.4 Moving parts such as machine sliders and backgauges should be divided into safety color stripes separated by color and yellow according to the provisions of 2.6 in GB2893 and GB/T6527.2-1986: they can also be painted only in yellow as needed. 7.4 Instructions for use
The machine must be equipped with instructions for use, which shall comply with the provisions of 5.5 in GB/T15706.2-19957.4.3 The safety distance between the safety device on the machine and the danger zone T shall comply with the determination of safety requirements and/or measures specified in 13.3.4 of GB17120-1997
JB10148-1999
The following methods are used to test, detect, and check whether the safety performance of the machine meets the safety requirements and/or measures in Chapter 5. If one method cannot be used to determine, another method should be used to determine. Each safety requirement and/or measure must be judged by at least one method. If a safety requirement and/or measure can be judged by multiple methods, the results of the judgments by several methods shall comply with the safety requirements or be incorrect. Otherwise, it will be judged as not complying with the safety requirements and/or measures. 6.1 Functional test
Through the safety function test, check whether the safety performance of the machine meets the safety requirements of Chapter 5 and/or the recommended function test cannot be carried out, it should be carried out according to the method given in 6.2 or 6.3. 6.2 Performance testing
Use testing instruments to hold the device and test whether its safety performance meets the specified safety requirements. If it is impossible to conduct testing to determine whether the safety performance of the machine meets the safety requirements, or if the safety requirements do not have specific index requirements, it should be carried out according to 6.3. 6.3 Check the safety performance through calculation and visual inspection. Check whether the safety performance meets the specified safety requirements (such as stability, center of gravity position, signs, pipelines, etc.) through calculation and visual inspection. The inspection should be scientific. precise.
7 Usage information
7.1 The usage information of the machine should comply with the requirements of Chapter 5 of GB/T15706.2-1995 and Chapter 18 of GB17120-1997. 7.2 The top surface of the machine is more than 3m above the ground. Or at the diagonal corners of the top of the railing of the platform and at the highest point of the components above the railing, red safety lights should be set.
7.3 Signs, symbols, text warnings
7.3.1 The machine should be marked with at least the following clear and durable signs: a) Manufacturer’s name and address:
b) Model name:
c) Basic parameters;
d) Factory date and number:
e) Restriction marks on the use of the machine:
0 Regarding the use of safety devices Feature flag. 7.3.2 There should be obvious warning signs in the dangerous operating area of ??the machine, the throat part, the electrical device and the rear of the machine. Warning signs should comply with the provisions of 18.2 in GB2894 and GB/T5226.1-1996. 7.3.3 When the protective device at the throat is removed, a text warning to the operator must be visible. 7.3.4 Moving parts such as machine sliders and backgauges should be divided into safety color stripes separated by color and yellow according to the provisions of 2.6 in GB2893 and GB/T6527.2-1986: they can also be painted only in yellow as needed. 7.4 Instructions for use
The machine must be equipped with instructions for use, which shall comply with the provisions of 5.5 in GB/T15706.2-19957.4.3 The safety distance between the safety device on the machine and the danger zone T should comply with the determination of safety requirements and/or measures specified in 13.3.4 of GB17120-1997
JB10148-1999
The following methods are used to test, detect, and check whether the safety performance of the machine meets the safety requirements and/or measures in Chapter 5. If one method cannot be used to determine, another method should be used to determine. Each safety requirement and/or measure must be judged by at least one method. If a safety requirement and/or measure can be judged by multiple methods, the judgment results of the several methods shall comply with the safety requirements or be incorrect. Otherwise, it will be judged as not complying with the safety requirements and/or measures. 6.1 Functional test
Through the safety function test, check whether the safety performance of the machine meets the safety requirements of Chapter 5 and/or the recommended function test cannot be carried out, it should be carried out according to the method given in 6.2 or 6.3. 6.2 Performance testing
Use testing instruments to hold the device and test whether its safety performance meets the specified safety requirements. If it is impossible to conduct testing to determine whether the safety performance of the machine meets the safety requirements, or if the safety requirements do not have specific index requirements, it should be carried out according to 6.3. 6.3 Check the safety performance through calculation and visual inspection. Check whether the safety performance meets the specified safety requirements (such as stability, center of gravity position, signs, pipelines, etc.) through calculation and visual inspection. The inspection should be scientific. precise.
7 Usage information
7.1 The usage information of the machine should comply with the requirements of Chapter 5 of GB/T15706.2-1995 and Chapter 18 of GB17120-1997. 7.2 The top surface of the machine is more than 3m above the ground. Or at the diagonal corners of the top of the railing of the platform and at the highest point of the components above the railing, red safety lights should be set.
7.3 Signs, symbols, text warnings
7.3.1 The machine should be marked with at least the following clear and durable signs: a) Manufacturer’s name and address:
b) Model name:
c) Basic parameters;
d) Factory date and number:
e) Restriction marks on the use of the machine:
0 Regarding the use of safety devices Feature flag. 7.3.2 There should be obvious warning signs in the dangerous operating area of ??the machine, the throat part, the electrical device and the rear of the machine. Warning signs should comply with the provisions of 18.2 in GB2894 and GB/T5226.1-1996. 7.3.3 When the protective device at the throat is removed, a text warning to the operator must be visible. 7.3.4 Moving parts such as machine sliders and backgauges should be divided into safety color stripes separated by color and yellow according to the provisions of 2.6 in GB2893 and GB/T6527.2-1986: they can also be painted only in yellow as needed. 7.4 Instructions for use
The machine must be equipped with instructions for use, which shall comply with the provisions of 5.5 in GB/T15706.2-1995
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