|
US$309.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
CYT213-2020: (Sheet-fed offset printing machine maintenance procedures)
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| CY/T 213-2020 | English | 309 |
Add to Cart
|
3 days [Need to translate]
|
(Sheet-fed offset printing machine maintenance procedures)
| Valid |
CY/T 213-2020
|
PDF similar to CYT213-2020
Basic data | Standard ID | CY/T 213-2020 (CY/T213-2020) | | Description (Translated English) | (Sheet-fed offset printing machine maintenance procedures) | | Sector / Industry | Press & Publication Industry Standard (Recommended) | | Classification of Chinese Standard | A17 | | Classification of International Standard | 37.100.01 | | Word Count Estimation | 13,167 | | Date of Issue | 2020-11-16 | | Date of Implementation | 2021-02-01 | | Regulation (derived from) | Guoxin Departure Letter (2020) No. 249 | | Issuing agency(ies) | State Press and Publication Administration | CYT213-2020: (Sheet-fed offset printing machine maintenance procedures)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Maintenance procedure for sheet-fed offset press
2020-11-16 released
2021-02-01 implementation
Press and Publication Industry Standards of the People's Republic of China
Issued by the National Press and Publication Administration of the People's Republic of China
Table of contents
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Requirements for operating conditions 2
5 Sheet-fed offset printing machine maintenance content 2
Appendix A (Informative Appendix) Special Tools for Printing Press Maintenance 8
Appendix B (informative appendix) Lubrication table example 9
This standard was compiled in accordance with the drafting rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
This standard was proposed and managed by the National Printing Standardization Technical Committee (SAC/TC 170).
Drafting organizations of this standard. Shenzhen Vocational and Technical College, Dongguan Mingfeng Packaging Co., Ltd., Shanghai Tobacco Packaging and Printing Co., Ltd.,
Engineering College of Qufu Normal University, Beijing Institute of Graphic Communication, Qingdao Hengxing Technology College, Shenzhen Yinweishi Electronic Commerce Technology Co., Ltd., Shandong
Sunshine Concept Packaging Co., Ltd., Xi'an Yuntuo Electric Co., Ltd., Shandong Packaging and Printing Industry Association, Fujian Puximei Mould Industry
Co., Ltd., Rizhao Newspaper Media Group, Shaanxi Juzhong Zhide Electronic Technology Co., Ltd., Rizhao Tengfei Plastic Packaging Co., Ltd., Yiwu
Jianghao Plastic Technology Co., Ltd., Shandong Pacific Printing and Packaging Co., Ltd., Xi'an Zhiheng Electrical Technology Co., Ltd., Pengjiang District, Jiangmen City
Sun Hung Kai Industrial Co., Ltd., Shandong Industrial Technician College.
The main drafters of this standard. Wang Lijie, Bai Ziyou, Cao Renxiang, Song Zhenhai, Chen Hua, Zhou Min, Chen Hong, Shi Jingjing, Chen Fang, Chen Qidong,
Liu Xuecong, Liu Feng, Wang Junxu, Cao Xinguan, Chen Yong, Wang Lianjun, Liu Zhihong, Huang Shengshang, Pi Kunlin, Xu Yueping, Wang Zhenping, Xiao Derong.
Foreword
1 Scope
This standard specifies the operating conditions of sheet-fed offset printing presses, basic maintenance, general maintenance and key maintenance.
Requirements and specific content.
This standard applies to the maintenance of sheet-fed offset printing presses and their online equipment.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version is applicable to this
file. For undated reference documents, the latest version (including all amendments) is applicable to this document.
CY/T 212-2020 Sheet-fed offset press requirements and inspection methods for printability.
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Basic maintenance
The operator is responsible for maintenance and maintenance every day or every shift.
[CY/T 211-2020, definition 3.1]
3.2
General maintenance
The equipment runs for a cycle (weekly, monthly or quarterly, etc.), with operators as the mainstay, and maintenance personnel to cooperate in maintenance.
[CY/T 211-2020, definition 3.2]
3.3
Key maintenance
The equipment runs for a cycle (weekly, monthly or quarterly, etc.), with maintenance personnel as the mainstay.
Maintenance mode based on the technical status of the equipment.
[CY/T 211-2020, definition 3.3]
3.4
Paper transfer system
The entire running route of the substrate (paper) from feeding to receiving.
3.5
Waterway dampening system
The water supply system from the dampening fluid storage tank to the printing plate.
Sheet-fed offset printing machine maintenance procedures
3.6
Molu inking system
The transfer route of the ink from the ink fountain to the substrate.
3.7
Pneumatic control system
A system consisting of air source, pneumatic control devices, pneumatic actuators and connecting pipelines.
3.8
Circuit electric control system
Printing machine electrical control system.
4 Requirements for operating conditions
4.1 Dry running performance
The mechanism of each unit runs smoothly and normally, without seizure, abnormal noise and vibration.
4.2 Printing status
Meet the requirements of CY/T 212-2020.
4.3 Safety device
Driving ringing light alarm device, double-sheet controller, safety bar, protective grid, overcurrent protection switch, oil pressure switch, temperature control switch,
Limit switches, emergency stop switches, pressure switches and other devices should work normally and reliably.
4.4 Environment
Ambient temperature. (23±5) ℃; relative humidity. (55±10) ﹪; the power supply voltage deviation limit is ±5% of the nominal voltage.
5 Maintenance content of sheet-fed offset printing machine
5.1 Basic maintenance
5.1.1 Paper path maintenance
The specific operation requirements are as follows.
a) Clean the exterior surface of the offset printing machine and the operation panels. Refer to Appendix A for the special tools for maintenance of the printing machine;
b) Clean the rollers at both ends of the plate cylinder, blanket cylinder and impression cylinder, and check the lubricant film on the shoulder iron, and apply lubricant if necessary;
c) Clean the surface of the plate cylinder, blanket cylinder and impression cylinder;
d) Clean the empty sheet detection sensor and keep its surface clean;
e) Clean and inspect the feeder head to ensure its flexible movement;
f) Clean and inspect all parts on the conveying board, and fasten loose parts;
g) Clean the front gauge, side gauge, front gauge roller and front gauge adjusting bolt to ensure the positioning accuracy of the front gauge and side gauge;
h) Clean all the paper transfer rollers to avoid smearing the surface of the graphics or the back of the paper.
5.1.2 Circuit maintenance
The specific operation requirements are as follows.
a) Check whether the protective cover, various safety switches and indicator lights are working properly;
b) Start-up ringing light alarm device, overcurrent protection device, insurance, temperature control switch, motor carbon brush, double-sheet controller, electric eye control
Switch, regular maintenance, timely inspection and repair when any problems are found.
5.1.3 Air circuit maintenance
The specific operation requirements are as follows.
a) Clean the filter element of the paper feeding and receiving air supply device;
b) Clean the powder and paper wool in the air pump to ensure the cleanliness of the vacuum suction (negative pressure) and blowing (positive pressure) used by the feeder head,
There should be no oil stains in the air path to avoid contaminating the printed products or the paper conveying belt;
c) Check the system pressure. After turning off the machine each time, open the exhaust valve to release the compressed gas, and then close the exhaust valve;
d) Check the air compressor and drain the condensate regularly.
5.1.4 Waterway maintenance
The specific operation requirements are as follows.
a) Clean all filters and screens in the water circuit;
b) Check the waterway to see if there is any dripping, leaking, running or leaking;
c) Check whether the water hardness, alcohol content, temperature, conductivity, and pH of the wetting fluid are normal;
d) All water rollers in the waterway should be cleaned when the machine is stopped.
5.1.5 Ink circuit maintenance
The specific operation requirements are as follows.
a) Clean all ink rollers, printing plates, blankets, and impression cylinder surfaces in the ink path when the machine is stopped;
b) Clean the collection tank of the ink washing device (automatic ink washing device), the ink washing tank and the rubber scraper;
c) Check whether the movement of the ink fountain motor (or knob) is sensitive;
d) Clean the pressure roller and supporting roller of the automatic plate loading device.
5.2 General maintenance
5.2.1 Paper path maintenance
The specific operation requirements are as follows.
a) Check and clean the air pump filter and replace if necessary;
b) Clean and lubricate the paper stack guide rail and transmission device, and check whether the paper stack lifting work is normal;
c) Clean the paper separating nozzle and paper feeding nozzle, and check whether they run smoothly;
d) Clean the rotary valve and connecting pipe, and check whether the blowing and suction air flow is unobstructed;
e) Check whether the double-sheet controller works normally;
f) Clean the pull gauges on both sides and monitor whether the sensors are normal;
g) Clean the paper lint, dust, ink skin and other foreign matter on the plate clamp and positioning block of the printing plate cylinder, check whether the plate clamp is abraded, and pull the plate.
Or whether the automatic action is normal;
h) Clean the gripper, tooth shaft, tooth seat, tooth spring of the paper path, and lubricate the lubrication points such as the opening shaft bearing and opening ball of each roller;
i) For offset printing presses with reversing devices, clean the suction nozzle and adjustment ring of the paper storage roller, and control the bearings and locks of the relevant movable parts of the paper storage roller.
Tighten bolts, chutes and other lubrication points for lubrication, and check whether the paper storage roller works normally;
j) For offset presses with reversing devices, clean the surface of the empty sheet detection sensor and reflector between the reversing roller and the paper storage roller;
k) Clean and lubricate the delivery chain and guide rails, delivery grippers, opening shaft bearings and opening balls and other lubrication points, and check whether they are working properly;
l) Clean and lubricate the guide rail of the non-stop paper delivery device;
m) Clean the oil pump filter and replace if necessary;
n) Check the oil level of the lubricating oil tank, add it if necessary, and check whether the oil circuit works normally;
o) Clean and check whether the powder spraying device works normally;
p) Clean the dust collector at the delivery area;
q) Check whether the mechanical condition of each transmission part is in good condition and whether it works normally.
5.2.2 Circuit maintenance
The specific operation requirements are as follows.
a) Check whether the cooling fan of the electric control cabinet and console is working normally, and clean the air filter;
b) Check whether the grounding resistance of the electrical appliance is normal;
c) The vulnerable parts of the electrical part such as electromagnetic switch, travel switch, slip clutch controller and each drive circuit board, rectifier bridge of DC power supply,
Sensors, photoelectric receivers, transmitters, etc. are all electrical vulnerable parts. When replacing and maintaining, match the ones marked on the original electrical components
Rated voltage, rated current and rated power;
d) Check the safety bars of the color group, maintain them regularly, and clean them up in time if they are found to be dirty to ensure sensitive and reliable movements;
e) Check whether the actions of limit switch, fast fuse, insurance, over-current and over-temperature protection switch, pressure switch, etc. are sensitive, and whether there are contacts
Oxidation and dirt;
f) Check whether the carbon brush of the main motor, the photoelectric control device and the servo motor work normally.
5.2.3 Air circuit maintenance
The specific operation requirements are as follows.
a) Check whether the air compressor, air pump and related air circuits are working properly. A small amount of lubricating oil is allowed in the control air circuit to achieve lubrication and
Increase air tightness. However, no lubricating oil is allowed in the blowing and suction air path used for paper control to avoid staining the paper;
b) Check whether the air circuit control solenoid valve works normally;
c) Clean the air filter of the air compressor and air pump, and replace the filter if necessary;
d) Check the lubricating oil level of the air compressor and air pump.
5.2.4 Waterway maintenance
The specific operation requirements are as follows.
a) Clean the wetting fluid water tank and check whether the water tank and waterway work normally;
b) Clean the water bucket and water bucket roller, and check whether the water bucket roller and the water roller are working normally during the high-speed operation of the machine;
c) If the printing machine is not used for a long time, the water roller of the printing unit should be removed and placed on the ink roller support;
d) Clean the wetting fluid cooling system and check whether the condenser is working normally;
e) Clean the filter of the wetting fluid circulation system, and replace the filter if necessary;
f) Clean the main agent meter of the wetting fluid, and check whether the meter is working properly;
g) Check the geometric dimensions of the water roller and evaluate its wear changes;
h) Check whether the hardness of the water roller meets the requirements.
5.2.5 Ink circuit maintenance
The specific operation must...
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of CYT213-2020_English be delivered?Answer: Upon your order, we will start to translate CYT213-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of CYT213-2020_English with my colleagues?Answer: Yes. The purchased PDF of CYT213-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|