Some standard content:
Light Industry Industry Standard of the People's Republic of China
Band Knife Cutting Machine
Subject Content and Scope of Application
This standard specifies the product classification, technical requirements, test methods and inspection rules of band knife cutting machines. QB/T1480--1992
This standard applies to air cushion band knife cutting machines for cutting cotton, wool, chemical fiber fabrics and leather materials. Band knife cutting machines without air cushion devices can also be implemented as a reference.
2 Reference Standards
GB191 Pictorial Symbols for Packaging, Storage and Transportation
3 Terms
3.1 Band Knife
A band-shaped annular blade with a straight cutting edge. 3.2 Band Knife Linear Speed
The distance the band knife moves per unit time.
3.3 Air Cushion Device
A device in which a certain pressure of air generated by a blower is ejected through a number of nozzles to form an air flow between the cut material and the work surface. 3.4 Cutting height
The maximum thickness of the material that the band knife cutting machine allows to pass. 4 Product classification
4.1 Type
The band knife cutting machine is a flat workbench; the transmission wheel is driven by an electric motor to make the band knife form a one-way rotary motion, and it has a knife sharpening device: 4.2 Classification
According to the structural characteristics of the flat workbench:
With air cushion device;
Without air cushion device.
4.3 Main technical parameters
The main technical parameters are shown in Table 1.
Project name
Cutting height series
Effective width of the right side of the knife
Jet air pressure
Motor power of cutting machine
Approved by the Ministry of Light Industry of the People's Republic of China on April 14, 199232
150, 200, 250.300
≥1000
Implemented on December 1, 1992
Project name
Motor power of blower
Knife thickness specification
Knife line speed
4.4 Model
Model compilation regulations are as follows:
DC 000-0
Model example:
5 Technical requirements
QB/T 1480—1992
Continued Table 1
Improved design sequence number, expressed in Arabic numerals
Main parameters, expressed in Arabic numerals, representing the effective width of the right side of the belt knife, in "mm" Classification code, "Q" is the first letter of the Chinese pinyin of the word "气" in the air cushion belt knife cutting machine, and there is no characteristic code "Q" for the belt knife cutting machine without air cushion device Name code, "DC" is the first letter of the Chinese pinyin of the two words "带" and "裁" in the belt knife cutting machine The effective width of the right side of the belt knife is 1200mm
With air cushion device
Belt knife cutting machine
5.1 Appearance quality
5.1.1 The surface of the painted parts should be flat and uniform in color, and there should be no obvious flow marks, blistering, peeling and bumps on the main visible parts. 5.1.2 The nameplate should have clear pictures and texts, correct position, and no obvious scratches. 5.1.3 The surface of the electroplated parts should be flat and smooth, with uniform color, and should not have defects such as missing plating, peeling, spots, scratches and rust. 5.1.4 The surface of the oxidized parts should have uniform color, and should not have defects such as blanks, light spots of sediment, scratches and rust. 5.2 Safety performance
5.2.1 The insulation resistance value should be greater than 1MQ.
5.2.2 There should be a reliable grounding terminal and grounding mark. 5.2.3 The non-working parts of the belt knife and the driving wheel should have safety protection devices. 5.3 Machine performance
5.3.1 The verticality of the back and side of the belt knife to the work surface shall not exceed 1mm for every 100mm. 5.3.2 The linear speed of the belt knife should be adjustable, and the minimum shall not be less than 9.5m/min. 5.4 Operation performance
5.4.1 Operation noise
When the belt knife cutting machine is at the highest speed, the operation noise sound pressure level is as follows: a. With air cushion device, the operation noise sound pressure level is not more than 80 dB(A); b. Without air cushion device, the operation noise sound pressure level is not more than 77dB(A). 5.4.2 The jet wind pressure of the air cushion device should be greater than 1000Pa. 33
QB/T1480—-1992
5.4.3 The belt knife is not allowed to be separated from the transmission wheel during operation. 5.4.4 After the belt knife is sharpened, the blade edge is sharp and the blade curling phenomenon is not allowed. 5.5 Cutting performance
The minimum cutting radius is not more than 15mm.
6 Test methods
6.1 Appearance quality
Test methods for clauses 5.1.1 to 5.1.4 of this standard: visual inspection. 6.2 Safety performance
6.2.1 Test method for clause 5.2.1 of this standard
Use a 500V megohmmeter to measure the resistance between the live part and the metal casing. 6.2.2 Test method for clause 5.2.2 of this standard
Visual inspection.
6.2.3 Test method for clause 5.2.3 of this standard
Visual inspection.
6.3 Machine performance
6.3.1 Test method for clause 5.3.1 of this standard
When the belt knife is in a stopped state, use a square and a feeler gauge to measure the verticality of the side and back of the belt knife to the work surface. 6.3.2 Test method in clause 5.3.2 of this standard
Adjust the belt knife line speed to the minimum value, measure the rotation speed of the transmission wheel with a non-contact tachometer, and calculate according to the following formula: V
Where: V is the belt knife line speed, m/min; n
actual rotation speed of the transmission wheel under test, r/min; D is the diameter of the transmission wheel under test, mm.
6.4 Running performance
6.4.1 Test method in clause 5.4.1 of this standard
Test conditions
Fill with lubricating oil, run idly for 5 min;
6×104
The distance between the belt knife cutting machine and the surrounding objects is not less than 1m; the background interference noise sound pressure level should be lower than the machine noise sound pressure level by more than 10 dB(A); the machine under test should be placed stably on a solid ground, the microphone should be 1m above the ground and parallel to the horizontal plane, and the measuring point position is shown in Figure 1. L1000
Machine (view from above)
Microphone
6.4.1.2 Test instrument
Sound level meter with an accuracy of ±0.7 dB(A).
6.4.1.3 Test value
The noise value measured at the four measuring points, take the maximum value. 6.4.2 Test method in clause 5.4.2 of this standard
6.4.2.1 Test conditions
The blower runs for 5 minutes;
QB/T 1480-1992
Eight nozzles on the workbench are taken as measuring points, and the point positions are shown in Figure 2. Figure 2
6.4.2.2 Test instrument
Diaphragm pressure gauge.
6.4.2.3 Test value
The jet air pressure values obtained at eight measuring points shall be calculated as the arithmetic mean. 6.4.3 Test method in clause 5.4.3 of this standard
Adjust the speed of the belt knife line to the maximum value, start and stop 10 times, and observe visually. 6.4.4 Test method in clause 5.4.4 of this standard
Observe visually.
6.5 Test method in clause 5.5 of this standard
Work surface
Fold the flat cloth to a height of 100mm, and then push the cloth by hand to cut it. The cut cloth shall be measured with a special sample with an R of 15mm.
7 Inspection rules
7.1 Inspection classification
Inspection is divided into factory inspection and type inspection. 7.2 Non-conforming classification
Non-conforming can be divided into: a. Class A nonconformity: The extremely important quality characteristics of the unit product do not meet the requirements; b. Class B nonconformity: The important quality characteristics of the unit product do not meet the requirements; C.
Class C nonconformity: A general quality characteristic of the unit product does not meet the requirements. 7.3 Factory inspection
7.3.1 All products leaving the factory shall be inspected. 7.3.2 Inspection items
See Table 2 for inspection items and categories.
Inspection items
7.3.3 Qualification of individual products
QB/T 1480—1992
Nonconformity classification
A single product shall be judged as qualified when the following conditions are met: a.
No nonconformity items of Class A or B appear;
No more than two nonconformity items of Class C appear. 7.4 Type inspection
Type inspection is generally carried out in one of the following situations. When conducting trial production and identification of new products or transferring old products to factory production; b.
Inspection classificationwwW.bzxz.Net
Factory inspection
When the product is in formal production, if there are major changes in structure, materials, and processes that may affect product performance; during normal production, once a year;
When the product is stopped for more than one year (including one year) and then resumes production; when the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a type inspection requirement. 7.4.2
Sample extraction
Type inspection
From a batch manufactured in this cycle and qualified by factory inspection, or if 4 sample units are randomly selected from the batch, two of the sample units shall be inspected, and the other two sample units shall be kept for inspection. 7.4.3 Inspection items
See Table 2 for inspection items and categories.
7.4.4 Qualification judgment of type inspection
When one of the following conditions is met, it is judged to be qualified for type inspection. If the two sample units tested do not have any unqualified items of Class A and more than two unqualified items of Class B, nor do they have more than three unqualified items of Class C, and there is no more than one unqualified item of Class B in each sample unit, and the total number of unqualified items does not exceed three; if the two sample units tested do not have any unqualified items of Class A and more than three unqualified items of Class B, nor do they have more than four unqualified items of Class C, and there is no more than two unqualified items of Class B in one sample unit, and the total number of unqualified items does not exceed four, then the same items of the other two sample units are allowed to be re-tested, and all these items should be qualified. 8 Marking, packaging, transportation, purchase and storage
8.1 Marking
8.1.1 The machine should have a durability nameplate.
8.1.2 The nameplate should clearly indicate the following: manufacturer's name;
registered trademark,
product name;
d. product model;
e. manufacturing date or serial number.
8.2 Packaging
8.2.1 The machine should be packed in a firm box with moisture-proof protection measures. 8.2.2 The packaging measures should ensure that the machine will not be damaged by sun exposure, loading and unloading, moisture and dust intrusion under normal transportation and storage conditions.
8.2.3 Before packaging, the exposed metal parts of the machine that are not painted should be painted with anti-rust agent. 8.2.4 Each machine should have the following documents: product certificate;
instruction manual;
packing list.
The following items should be clearly marked or indicated on the outer surface of the packaging box: product name;
Product standard code and number:
Product model,
Net weight;
Gross weight:
Dimensions: length×width×height,
Manufacturer name.
8.2.6 The graphic signs for packaging, storage and transportation should comply with the provisions of GB191. 8.3 Transportation
The machine should be prevented from being overturned and violently impacted during loading, unloading and transportation. 8.4 Storage
The packaged products should be stored in a well-ventilated and dry room, and there should be no corrosive gas in the surrounding air. Additional remarks:
This standard was proposed by the Technical Equipment Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Garment Machinery Standardization Center. This standard was drafted by Shanghai Liming Garment Machinery Factory. The main drafters of this standard are Ying Zhenguo and Zhuang Genmei. 37
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