Some standard content:
Light Industry Industry Standard of the People's Republic of China
Light leather flattening and squeezing machine
Subject content and scope of application
QB/T 1833-1993
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of light leather flattening and squeezing machine.
This standard applies to light leather flattening and squeezing machine used before drying with a working width of 1200 to 3000 mm. 2 Reference standards
Packaging, storage and transportation pictorial marking
GB 1911
GB/T511Petroleum products and additivesDetermination of mechanical impurities-Gravimetric method
GB/T3766'General technical conditions for hydraulic systemsSample locations and markings for leather testing laboratories
GB 4689. 1
GB 4689. 3
Sampling quantity for leather sampling batches
Preparation of leather chemical test samples
GB 4689. 11
GB4689.12Determination of moisture and other volatiles in leatherGB/T5226
General technical conditions for electrical equipment of machine tools
GB7612
QB 1524
Determination of sound power level of noise in leather machinery
Product model compilation method for leather machinery
General technical conditions for light industrial machinery weighing instruments
QB/T 842
QB/T 1588.1
QB/T 1588. 2
General technical conditions for welded parts of light industrial machinery
Light industrial machinery
QB/T1588.3 Light industrial machinery
3 Product classification
General technical conditions for cutting and processing parts
General technical conditions for assembly
3.1 The size specification series of light leather flat squeezing machine shall comply with the provisions of Table 1. Table 1
Column (working width)
3.2 The product model compilation method of light leather flat squeezing machine shall comply with the provisions of QB1524. 3.3 Basic parameters of light leather flat squeezing machine. 3.3.1 The working width of light leather flat squeezing machine shall comply with the provisions of Table 1. 2400
3.3.2 The basic parameters of light leather flat squeezing machine generally include the following items and shall comply with the provisions of the design technical documents. a. Working width, mm;
b. Feeding speed, m/min;
c. Maximum working pressure, kN;
Approved by the Ministry of Light Industry of the People's Republic of China on July 29, 1993, and implemented on March 1, 1994
Total power of motor, kw;
Net weight of the whole machine, t;
Overall dimensions, l×b×h, mm.
4 Technical requirements
4.1 Basic requirements
QB/T 1833—1993
4.1.1 Light leather flat squeezing machine shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.1.2 The forging, casting, welding, machined parts and assembly of light leather flat squeezing machine shall comply with the relevant provisions of QB/T842 and QB/T1588. 4.1.3 The matching outsourced parts and purchased parts shall be assembled only after they have passed the inspection or have a certificate of conformity. 4.2 Technical requirements for main and related parts
4.2.1 The radial circle runout tolerance of the outer circle of the pressure roller to its common reference axis shall comply with the provisions of Table 2. Table 2
, mm
Radial runout tolerance
1 200～1800
The radial runout tolerance of the outer circle of the knife roller to its common reference axis shall comply with the provisions of Table 3. Table 3
, mm
Radial runout tolerance
1200～1800
The radial runout tolerance of the outer circle of the rubber roller to its common reference axis shall comply with the provisions of Table 4. Table 4wwW.bzxz.Net
, mm
Radial runout tolerance
1200～1800
4.2.4 Anti-corrosion measures shall be taken on the working surface and exposed parts of the press. 4.3 Assembly quality
4.3.1 The movement of the moving parts shall be smooth and flexible during no-load operation. 4.3.2 Each fastener shall be firm and reliable.
4.3.3 The difference in the gap between the rubber roller and the two ends of the knife roller working surface should not be greater than 0.30mm. 4.3.4 The cleanliness of the hydraulic oil is that the mechanical impurity content in 100mL of the sample shall not exceed 25mg. 4.4 Machine performance
Noise sound power level limit is shown in Table 5.
Grid, mm
Noise limit, dB(A)
4.4.2 There should be a safety protection device at the operating position. 12001800
4.4.3 The foot switch, button, limit switch and safety protection device should operate correctly, sensitively and reliably. 4.4.4 The adjustment of the hydraulic system should be sensitive and reliable. The oil leakage of the pipeline should comply with the relevant provisions of GB/T3766. 4.4.5 When the machine is running continuously, the oil temperature of the oil tank should not exceed 60℃. 4.4.6 The insulation resistance of the electrical system shall comply with the provisions of Article 13.1 of GB/T5226. 4.4.7
The temperature rise and maximum temperature of the bearing shall comply with the provisions of Table 6. Standard Material Labor Factor
2 100~~3 000
2 100~~3 000
2 100~3 000
≤103
Bearing Type
Rolling Bearing
Sliding Bearing
Working Accuracy
QB/T18331993
Maximum Temperature
4.5.1 The moisture content of the leather after squeezing out water shall not be greater than 70%. 4.5.2 The increased area of leather after flattening and squeezing water shall not be less than 3%. 4.5.3 After flattening and squeezing water, the surface of leather shall have dead folds opened, live folds flattened, and no damage. 4.6 Appearance quality
The welds shall be firm and flat, and shall not have defects such as burn-through. 4.6.2
The positions of various nameplates shall be eye-catching and correct.
4.6.3 The hydraulic system pipelines and electrical wiring shall be reasonable and neatly arranged. 4.6.4 The surface of electroplated parts shall be smooth and bright, and shall not have peeling or flaking. 4.6.5 The paint shall be free of bubbles and sagging, with uniform color and no scratches on the surface. 5 Test method
5.14.2.1 Inspection: Place the shaft necks at both ends of the roller on two V-shaped blocks as shown in Figure 1. During the rotation of the roller, use a dial indicator to measure 3 sections evenly divided according to the effective working width. The maximum difference measured is the radial runout value of the roller. 2
V-block
5.24.2.2.4.2.3 Test according to the method specified in 5.15.34.3.4 Test: After the machine runs at no load for 2 hours, extract 100mL of oil from the hydraulic system and measure according to the GB/T511 test method.
5.44.3.3 Determine with a feeler gauge.
5.54.4, 1 Test according to the provisions of GB7612. 5.64.4.3 Test: Simulate operation 10 times, daily test, should meet the requirements. 5.74.4.5 Test: After the machine runs continuously for 2 hours, use a thermometer to test. 5.84.4.6 Test: Use a 500V megohmmeter to test. 5.94.4.7 Test: Use a surface thermometer to measure. Article 5.104.5.1 Inspection: Select a whole piece of chrome leather and conduct inspection in accordance with the requirements of GB4689.1, GB4689.3, GB4689.11 and GB4689.12.
5.114.5.2 Inspection: Select a whole piece of chrome leather and measure its area before and after flattening and squeezing water, and calculate it according to formula (1): ss
According to the standard industry bath material charge
QB/T 1833-1993
Where: K-increase rate of leather area after flattening and squeezing water, %, S-area of leather after flattening and squeezing water, m\;
S-area of leather before flattening and squeezing water, m".
5.12 Measurement method of basic parameters
5.12.1 Working width and external dimensions are directly measured with a length ruler. 5.12.2 Feeding speed: Use a stopwatch (or tachometer) to measure the speed of the pressure roller and calculate it according to formula (2): V r(D+26)n
Feeding speed, m/min
Wuzhong:
Circular ratio;
Diameter of roller, m;
Thickness of felt sleeve, m
Speed of roller, r/min.
5,12.3Maximum working pressure, calculated from pressure gauge reading according to technical documents or by other methods approved by inspection agency. 5.12.4Total power of motor, read the value on motor nameplate. 5.12.5Net weight of whole machine, by weighing method.
5.12.643.1,4.3.2,4.4.2,4.4.4,4.5.3,4.6.14.6.2.4.6.3,4.6.4,4.6.5 are all tested by daily test. 6 Inspection rules
6.1 Each machine shall be inspected for 4.3.1,4.3.2,4.3.3,4.4.2,4.4.34.4.4,4.4.6,4.6 before leaving the factory. 6.2 Each machine shall be inspected and issued with a certificate of conformity before leaving the factory. 6.3 Type inspection
Type inspection shall be carried out in any of the following situations. 6.3.1
Test type identification for new products or old products transferred to the factory for production; after normal production, if there are major changes in structure, materials, and processes that may affect product performance; during normal production, regularly (annually) or after accumulating a certain amount of production (20 units); when the product is discontinued for more than one year and production is resumed: when the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a type inspection requirement. The type inspection items are all the contents of this standard. The type inspection prototypes should be randomly selected from the factory inspection qualified batches, but not less than 1 unit. If one item of the type inspection is unqualified, double sampling should be carried out for re-inspection. If it is still unqualified, the batch of products shall be judged as unqualified. Marking, packaging, transportation, gift storage
7.1 Marking
7.1.1 Product nameplates, trademarks and various signs should be in their respective designated positions and should be firm and flat. 7. 1. 2
The markings on the outside of the packaging box should be clear and eye-catching, and the contents include: product name, model and factory number; gross weight, packaging box dimensions and lifting line; instructions or graphic marks for matters to be paid attention to during transportation; consignor and consignee and detailed address.
7.1.3 The packaging, storage and transportation markings should comply with the provisions of GB191. (2)
7.2 Packaging
The oil in the hydraulic system should be removed before packaging, and the disassembled hydraulic pipelines should be dust-proof at the disassembled parts, and the corresponding pipelines should have identification marks. 7.2.1
Marking Industry Information Free Download
QB/T18331993
7.2.2 The oil on the machine and accessories should be removed before packaging, and the processing surface of the exposed parts should be coated with anti-rust grease. 7.2.3 The movable parts and components of the product should be fixed, and the removed parts and components and random accessories should be fixed on the bottom plate of the packaging box. 7.2.4 The packaging box should be rainproof and windproof. 7.2.5 The packaging box should be firm and reliable, and easy to lift and transport. 7.2.6 The random documents should include "instruction manual", "packing list", "certificate of conformity" and other documents, and should be packed in plastic bags and placed in appropriate positions in the box.
7.3 Transport in accordance with relevant regulations on railways, roads, waterways, etc. 7.4 Storage
7.4.1 The necessary anti-rust measures should be taken when the machine is stored. The storage place should be ventilated, rainproof and free of corrosive substances. 7.4.2
Additional remarks:
This standard was proposed by the Technical Equipment Department of the Ministry of Light Industry. This standard was issued by the National Fur Machinery Standard Promotion Center. This standard was drafted by Huzhou No. 2 Light Machinery Factory. The main drafter of this standard was Han Shixin.
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