Some standard content:
rs37.10p.10
Standard of the Machinery Industry of the People's Republic of China
JE/T8868—2001
Web offset
2001-04-03 Issued
China Machinery Industry Federation
2001-10-01 Implementation
JB/T8868-2001
This standard is based on the old 8868—1999 web offset printing machine. The standard has some changes in the following major technical contents: 1. Added the commercial printing machine and related technical requirements. 2. Added the cut paper specification of 630mm×%0mm. 3. Added the requirements for machine safety devices.
4. Improved the registration.
5. Improved the assembly accuracy of major parts. 6. The noise value
is reduced. The printing speed of tabloid, large and double-width printing machines is increased. 8. In order to improve the reliability of the machine, the idle running test time is extended. This standard replaces JD/T 8868-1999 from the date of implementation. Appendix A and Appendix B of this standard are both standard appendices. This standard is proposed and coordinated by the Jinguo Printing Machinery Standardization Technical Committee. The responsible unit of this standard is Shanghai Gauss Printing Equipment Co., Ltd. The drafting unit of this standard is Beijing Fourth Printing Machinery Factory. The main drafters of this standard are Zhang Yaozong and Zhang Qiufen. This standard was first issued in May 1990 as 2BJ87020-90, and was adjusted to JD/T 8868-1999 in 1990. This is the first revision.
Machinery Industry Standard of the People's Republic of China
Web offset printing machine
Web affset
JB/T8868—2001
Replacement JBT8866-1999
This standard specifies the basic parameters, technical requirements, test methods, inspection rules and instructions, packaging, transportation and storage of web offset printing machines.
This standard is applicable to single-color and multi-color (calculated by the number of colors printed on one side) web offset printing machines. 2 Reference standards
The following texts, as included in the standard, are referenced in this standard and constitute the provisions of this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the following standards as the latest version: GB 191--1990
Including storage and transportation pictorial symbols
GET 5226.1---1996
Industry Mechanical and Electrical Equipment Department: General Technical Conditions GB/T6388-1986
Transportation Packaging Receipt and Delivery Mark
General Principles of Industrial Product Instructions
GB/T9969.1-1998
GBT13306-1991
GB/TJ4436-1993
JB/T6530-1992
3 Basic Replacement Number
Product Label
Industrial Product Guarantee Delivery Total
Printing Machine Product Model Reduction Method
31 The paper lithographic machine consists of three main parts: paper supply, printing and folding. 3.2 Basic parameters are as specified in Table 1.
3.3 Product model and name shall comply with the provisions of 1B/6530 4 Technical Requirements
4.1 Commercial paper lithographic printing machines shall comply with the provisions of this standard and be manufactured according to drawings and technical documents approved by the prescribed procedures. 4.2 Printing Quality
4. 2. 1 Registration Error
The registration error of book printing machines shall not be less than 96% within 0.25mm; b) The registration error of commercial printing machines shall not be less than 96% within 0.15mm; c) The registration error of printing machines shall not be less than 96% within 0.35mm. 4.2.2 Impression uniformity and positive printing stability
a) The uniformity of printing presses shall not exceed 25%, and the stability of printing shall not exceed 0.0B; b) The uniformity of printing presses shall not exceed 20%, and the stability of printing shall not exceed 0.05; Approved by China Machinery Industry Federation on April 3, 2001 and implemented on October 1, 2001
JB/T Lang 68—2001
C) The uniformity of printing presses shall not exceed 28%, and the stability of printing shall not exceed 0.10. Table
Old paper width
Batch cutting
Maximum printing width and
Maximum printing speed
Folding size
Book printing
Commercial machine
Newspaper printing machine
Book printing machine
Commercial printing machine
Newspaper printing machine
Note: Printing speed is calculated based on the number of single-paper printings, 787
550 ×787
546×787
520×75T
Personnel section
880 (890)
630B80
620×880
600 ×850
390 ×B50
a3D0D0
2-link
Roll-type paper press for printing color-coded products on paper. 4.2.3 Screen printing requires clear and firm dots without obvious weight changes. (8-link)
4.2.4 Text printing requires clear text, uniform color, no obvious ghosting, and clear image levels. 4.3 Folding quality
550×787
546×787
520×757
210b000
Book printing machine, commercial printing machine folding accuracy within ±1mm shall not be less than 96%, folding precision is not greater than 0.6mm, 4.1
4.3,1 newspaper printing machine folding accuracy within ±1.5mm shall not be less than 96%, folding precision is not greater than 0.Bmm. 4.3.3 The edge of the paper cut by the three front plates and cutting rollers should not have forced tearing cracks, and the length difference between the two front and back connected sheets of the cut paper long plate shall not exceed 1.5mm.
a) For printing presses, commercial printing presses, and small-column printing presses, it shall not exceed 94dB(A); b) For large-column printing presses, it shall not exceed 8dB(A);
4.5 Assembly quality of main components:
) The radial vibration of the working surface of the whole bucket roller shall not exceed 0.030mm; b) The radial vibration of the main working surface shall not exceed 0.060mm; c) The radial circumferential vibration of the printing roller and the working surface shall not exceed 0.025mm; d) The axial velocity of the printed sheet shall not exceed 0.050mm; e) The parallelism of two adjacent sheets in each printing unit (within the total length) shall not exceed 0.025mm for single-width machines and 0.035mm for double-width machines.
4.6 Appearance quality
4.6.1 The exposed non-pressed surface shall not have aesthetic defects such as convexity, depression, and air holes. The exposed processed surface shall not have defects, scratches, rust, etc.
-JB/T8868-2001
4.6.2 The oil circuit, gas circuit and electrical circuit shall be arranged neatly. 4.6.3 The paint layer shall be smooth and firm, with uniform color, no visible particles, adhesions and chain joints, and shall not have bubbles, whitening and loss of gloss.
4.7 Electrical quality
4.1.1 The wiring of the electrical system shall be arranged in an orderly manner, with a high connection rate, and various markings shall be complete and correct. 4.7.2 The electrical system shall work correctly, sensitively and reliably. 4.1.3 All exposed conductors of electrical equipment and machinery shall be connected to the protective grounding circuit. 4.7.4 The insulation resistance between the power circuit and the protective grounding circuit (including the machine base) shall not be less than 1M. 4.7.5 All circuit conductors of electrical equipment and protective earthing conductors shall be subjected to a withstand voltage test of at least 19°C, except for circuits operating at or below PELV voltage.
4.8 Machine safety
4.8.1 The moving parts on the outside of the machine shall be equipped with protective covers: The printing roller shall be equipped with safety protection devices. 4.8.1 There shall be an interlocking device between the machine and the electrical appliance. 4.8.3 The control device shall be interlocked with the safety protection device. 4.B.4 For printing machines that can operate in multiple places, their controls shall have interlocking devices. 4.9 Idle running performance
4.9.1 The machine operates smoothly, the transmission is normal, and there is no abnormal sound. 4.9.2 The operating mechanism is flexible and can be learned, without jamming and spontaneous movement. 4.3 The lubrication, hydraulic and pneumatic systems work normally, the pipelines are smooth, and there is no lubrication leakage. 4.9.4 The safety parking device is flexible and can be used.
4.9.5 The bearing temperature rise shall not exceed 35.
4.10 Scope of supply of leather cover:
a) Printing machine body (including paper supply, printing and folding parts); h) Motor and common control equipment;
c) Tools, parts and accessories necessary for operation and maintenance. 5 Test method
5.1 Idle running test
The printing press shall be tested for an idle running time of not less than 8 hours, of which the full-speed idle running time shall not be less than 1 hour. The test results shall comply with the provisions of 4.9. 52 Immediate printing test
5. 2. 1 Test conditions
a) The printing test shall use new offset printing paper with a weight of 49g/m2-50g/m*. The printing press can use 70g/m2-75g/m offset printing paper, and the commercial printing press can use 60m~80/m, the feed paper. The paper size shall comply with the roll paper size specified by the machine, and the paper roll shall not have defects such as deformation due to moisture, uneven looseness, uneven tension and too many joints. b) The printing plate used for the printing test shall comply with the rated maximum printing format of the printing press and have the test plate pattern specified in the Appendix (Appendix of the Standard). 5.2.2 Printing quality test
5.2.2.1. Variable accuracy test of multi-color printing press JB/T8868-2641
5.2.2.1.1 This test is only applicable to printing types with four colors on one side or more. Check: proceed with four colors on one side: 5.2.2.1.2 Print according to the format specified in Appendix A (Appendix to the standard) at a speed not less than 70% of the maximum printing speed of the machine. Take samples continuously for 100 sheets.
5, 2. 1,1.3 Check of registration error Use a reading microscope with a resolution of 0.01mm to measure the width of the registration crosshairs at positions a, b and c in 5.2.2.1.2 The difference between the maximum and minimum values is the registration error. The measurement according to the sample shall comply with the requirements of 4.2.1. 5.2.1.2 Test of impression uniformity and impression consistency Print according to the format specified in Appendix A (Appendix to the standard) at a speed not less than 70% of the maximum printing speed of the machine. For each printing plate, take one sample out of every 10 samples during continuous printing and take 20 samples from each printing plate. Use a metric meter to measure the field gradient D of the field test strip on each sample sheet. The average field gradient should be 10. If the printing uniformity error is calculated according to formula (1), the printing quality deviation is calculated according to formula (2). The abnormalities in the data of each sample sheet can be eliminated according to the principles of Appendix D (Standard Appendix). The machine's printing uniformity is the maximum value of the sample sheet; the machine's printing stability is the maximum value of the sample sheet, which meets the requirements of 4.2.2.
(Pu-E)
Wherein, — sample sheet sequence (-1, ..20); — check strip sequence -1, 212)
5.2.2.3 Check for excess dots
Use 5x magnification to check the dot quality in the large screen area of the sheet as specified in 5.3.2. It should comply with the requirements of 4.2.3. 5.2.2.4 Graphic printing test
5.2.2.4.1 The printing plates for graphics and text books and newspapers are arranged within the range of the largest printing surface, and double-shot printing is performed at a high printing speed of not less than 70% of the machine volume.
5.2.2.4.2 Visually inspect the quality of the printed sample, which shall comply with the provisions of 4.2.4. 5.3 Folding test
5.3.1 Inspection and sampling method
Use a printing plate with folding marks, and use a book printer or commercial printer at 85% of the machine speed, and a newspaper printer at 90% of the machine speed to test folding, and continuously sample 100 sheets. 5.3.2 Inspection and calculation of folding precision
Use a reading microscope with a test value of 0.01mm to measure the distance ring between the two folding marks and the folding line on the bright side of each of the inspection samples specified in 5.3.1, and calculate the folding deviation according to formula (3). The outlier value in the sample data can be distinguished by using the principle of clear recording B. The machine's folding accuracy is the maximum value of the sample folding deviation, which should comply with the provisions of 4.3.1 and 4.2.2. Ea-
stands for: - sample number [-, 2.-100
5.3.3 Inspection and calculation of folding accuracy
JB/T8868-4801
Use a reading microscope with a graduation value of 0.01mm to measure the distance between the two folding marks and the fold seam on each sheet of the sample specified in 5.3.1, and calculate the folding error according to formula (4). The folding accuracy of the machine is the maximum value of the sample folding error, which should comply with the provisions of 4.3.1 and 4.3.2.
5.3.4 Cutting quality test
Measure the hot cutting length of any two consecutive sheets in the sample specified in 5.3.1 and visually inspect the cutting quality, which should comply with the provisions of 4.33. 5.4 Sound level measurement
When conducting the folding test specified in 5.3, use an ordinary sound level meter to measure the A-level noise value of the measuring point. The height of the measuring point is 1.5m. The water level of the measuring point is shown in Figure 1. The horizontal spacing of the measuring points is 2m. The noise level of the machine is calculated by the arithmetic average of the noise at each measuring point. It should meet the requirements of 4.4. The outer wheel screen system of the coal-proof outer wheel
Strong temperature and track avoidance
5.5 Electrical quality inspection
5.5.1 Cut off the power supply, and the visual inspection should meet the requirements of 4.7.1. 20www.bzxz.net
5.5.2, reverse the machine, stop it, check its operation accuracy and stability, and adjust the lifting speed to check the stability of the lifting, which should meet the requirements of 4.1.2.
5.5.3 According to the test method of 20.2 in GB/T5226.1-1996, check the continuity of the protection circuit, which shall comply with the provisions of 4.7.3. 5.5.4 According to the test method of 20.3 in GB/T5226.1-1996, the insulation resistance value shall comply with the provisions of 4.7.4. 5.5.5 According to the test method of 20.4 in GB/T5226.1-1996, the insulation resistance shall comply with the provisions of 4.7.5. 5.6 Machine safety inspection
5.6.1. Check the outer moving parts and the printed circuit board of the machine, which shall comply with the provisions of 4.8.1. 5.6.2 Open the machine and check all safety protection interlocking devices, which shall comply with the provisions of 4.8.2~4.8.4. 5.7 Appearance inspection
Check the appearance quality, which shall comply with the provisions of 4.6. 5.8 Quality inspection
Visual inspection of the machine supply package shall comply with the provisions of 4.10. 5.9 Quality inspection of main parts
Inspect the quality of main parts according to the standard inspection method, and it shall comply with the provisions of 4.5. 6 Inspection rules
6.1.1 Each machine shall be inspected according to the provisions of 5.1, 5.2.2.1, 5.3.3, 5.3.4, 5.5-5.9 of the standard. If any item is unqualified, the product shall be unqualified.
JB/T 8868-3001
6.1.2 20% of each batch of products shall be sampled for inspection, and each batch shall not be less than 5.2.2.4. If there is unqualified, re-inspection of the item shall be conducted. If there is still no qualified, the item shall be inspected one by one. 6.1.3 Each product must be inspected and qualified by the quality inspection department of the manufacturer before it can leave the factory. 6.2 Type test
In any of the following situations, the first one, one product in the first batch or one product in the production batch shall be tested according to all the contents specified in this standard:
a) Trial type identification of new products or old products transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes, which may affect product performance; ) Three years after the product is put into production, when it resumes production: annual interval inspection.
? Marking
7.1 Each printing machine shall be fixed with a nameplate in an obvious position, and its requirements shall comply with the provisions of GB/T13306. The main contents of the product nameplate include:
a) Name of the manufacturer:
b) Product model and name:
Main technical parameters
Product number:
e) Product delivery! 2. The packaging, markings, and delivery and receipt marks of the products shall comply with the provisions of GB191 and GB/6388. 8. Packaging, transportation and storage 8. Packaging 8.1. Before packaging the products, the external processing surfaces of the parts and tools shall be treated with anti-rust agent, and the processing surfaces of the main parts shall be covered with anti-rust paper. 8.1.2 The packaging box of the products shall be filled with water-proof materials, and the products shall be firmly fixed in the box. The products may be packaged in separate boxes, and the boxes shall be suitable for transportation and storage requirements.
Since.1.3 Documents accompanying the product:
) Product certificate
The preparation of the product certificate shall comply with the provisions of GB/T14436; b) Product instruction manual
The contents of the instruction manual shall comply with the provisions of GB9969.1 and indicate the product standard number: c) Packing list:
d) Random spare parts list:
e) Installation foundation drawing;
Other related technical data.
R.2
When transporting and lifting the product, the product should be lightly modified according to the mark on the outside of the packaging box, and the rubber should be used to prevent collision. 6
JB/T 88682001
When storing the product, it should be placed in a dry and ventilated place to avoid moisture. If it is stored for days, rain protection measures should be taken. If the storage period exceeds one year, the product should be unpacked and inspected before leaving the factory. If it is found that the product packaging does not meet the relevant regulations, it should be repacked. A1 test board layout pattern
The layout of the general pattern on the board is as shown in A1. A2 plate selection instructions
Test plates are all made with the same format:
JB/T8B68-2001
Standard Appendix]
Testing principles
b) The upper registration cross line shown in A1 should be straight and smooth: the length is not more than 20mm. The line width is about 0.1mm, and the screen area is 34 lines/m (commercial printing machines are 60 lines/cm~70 lines/em) into a dot screen line:) The folding mark line can be arranged at the corresponding position on the test plate. A3 screen line and registration cross line printing plate can be made separately. Check the cross line
Five points in the general area
Dense A1
Field test
A1 description
JB88682001
Appendix B
【Standard Appendix】
Data processing and elimination method
Use standard deviation (.) When processing data, values that exceed a certain probability are allowed to be eliminated. B2
Elimination method
When the most accurate value of + and the minimum value in the data are less than -3, the average is eliminated, and the standard reserve difference is recalculated after elimination until it cannot be eliminated.
The average value is calculated according to the respective index parent generation.
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