This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of cylinder paper winders. This standard applies to ordinary cylinder paper winders and horizontal pneumatic cylinder paper winders (hereinafter referred to as paper winders) for papermaking machines. QB/T 1423-1991 Technical conditions for cylinder paper winders QB/T1423-1991 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Technical Conditions for Cylindrical Paper Winders
1 Subject Content and Scope of Application
QB/T 1423-1991
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of cylindrical paper winders. This standard applies to ordinary cylindrical paper winders and horizontal pneumatic cylindrical paper winders (hereinafter referred to as paper winders) for papermaking machines. 2 Reference standards
GB/T 5676 Cast carbon steel for general engineering
GB5799 Dynamic balance of rollers and drying cylinders for papermaking machinery GB/T9439 Gray iron castings
JB/T8 Product labels
QB/T842 General technical conditions for light mechanical scales QBJ1 Technical specifications for construction and acceptance of pulp and papermaking professional equipment installation projects ZBY91003 Technical conditions for cast iron drying cylinders for papermaking machinery 3 Technical requirements
3.1 Basic requirements
3.1.1 The paper reel shall comply with the provisions of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 3.1.2 The manufacture of the paper reel shall comply with the relevant provisions of QB/T842. 3.1.3 Gray iron castings shall comply with the relevant provisions of GB/T9439. 3.1.4 Steel castings shall comply with the relevant provisions of GB/T5676. 3.1.5 The installation and trial operation of the paper reel shall comply with the relevant provisions of QBJ1. 3.1.6 The paper reel label shall comply with the relevant provisions of IB/T8. 3.2 Performance requirements
3.2.1 The tightness of the finished paper roll shall be evenly hooked, without loose inside and tight outside, and can meet the requirements of subsequent processing. 3.2.2 The size of the paper roll shall meet the requirements specified by the paper type. 3.2.3 The replacement of the paper roll shall be convenient and flexible.
3.3 Quality requirements for processing of main parts
3.3.1 The cast iron paper reel cylinder shall comply with the relevant provisions of ZBY91003, but the following local adjustments are allowed: The paper reel cylinder is not a pressure vessel and is not subject to the relevant provisions of pressure vessel safety supervision; a.
b. The diameter of the patch hole shall not exceed 8mm and the depth shall not exceed 12mm; calculated based on the cylinder surface area of ​​1m2, the number of patch holes shall not exceed 10. 3.3.2 The steel welded paper reel cylinder shall comply with the relevant design regulations. 3.3.3 The frame casting shall be aged.
3.3.4 The paper reel shall be balanced according to the provisions of GI35799. 3.4 Assembly quality requirements
3.4.7 The paper reel shall be assembled on the fixed base plate according to the drawings before leaving the factory. Approved by the Ministry of Light Industry of the People's Republic of China on December 31, 199124
Implementation on August 1, 1992
QB/T 1423-1991
3.4.2 The longitudinal and transverse levelness of a single bottom rail is ±0.08mm/m; the span levelness is ±0.06mm/m. 3.4.3 The center distance deviation of the bottom rails on both sides shall not exceed ±0.5mm. 3.4.4 The axial levelness of the paper reel cylinder is ±0.1mm/m. 3.4.5 The actions of each part of the pneumatic control system should be coordinated and synchronized, and accurate. 3.4.6 The scraper should fit tightly with the cylinder surface, and the local maximum gap should not be greater than 0.05mm, and the non-fitting length should not exceed 10% of the total length of the cylinder surface.
3.4.7 The temperature rise of the paper reel cylinder bearing should not exceed 25℃, and the maximum temperature should not exceed 65℃. 3.5 Appearance quality requirements
3.5.1 The appearance surface of the paper reel should be flat and smooth, and there should be no obvious misalignment at the outer edges of the joints of adjacent parts. 3.5.2 The operating parts such as handles and hand wheels should be chrome-plated and polished, and the scale of the adjustment device should be clear and correct, without skewness and uneven division.
3.5.3 The paint color and other requirements of the outer surface of the paper reel should be compatible with the matching papermaking machine if the user has no special requirements, and should comply with the provisions of QB/T842.7.
4 Test methods and inspection regulations
4.1 Each paper reel can only leave the factory after passing the inspection of the inspection department at the manufacturer. When leaving the factory, it should be accompanied by documents proving that the product is qualified. 4.2 The final assembly of each paper reel is carried out on-site at the user's factory, but pre-assembly should be carried out at the manufacturer. 4.3 The product inspection of paper reels is divided into factory inspection and type inspection. 4.3.1 Factory inspection
Main parts processing quality inspection, cast iron cylinder according to ZBY91003 regulations, paper reel roller balance according to GB5799 regulations; among them, the bearing temperature a.
rise is measured on the surface of the bearing seat with a thermometer, and the shape and position tolerances are carried out according to their inspection regulations; assembly quality inspection shall comply with Articles 3.4.1 to 3.4.6; b.
Appearance quality inspection shall be carried out in accordance with Article 3.5, using self-test. 4.3.2 Type inspection
4.3.2.1 The paper reel shall be subjected to type inspection in the following cases: a. New product trial production and identification;
When the national quality supervision agency proposes a type inspection requirement. b.
4.3.2.2 The type inspection shall be conducted on the paper reel test, which is allowed to be conducted in the user's factory according to the unified specifications commonly used in pulp and paper mills and meet the requirements of Article 3.2.
5 Marking, packaging, transportation and storage
5.1 Each paper reel shall be fixed with a product label in a conspicuous position, and its contents are as follows: a.
Product name;
Product model;
Net paper width;
Maximum diameter of paper roll;
Diameter of paper reel cylinder;
Weight;
Name of manufacturer;
Date of manufacture and date of shipment;
Product number.
5.2 The accompanying documents shall include: wwW.bzxz.Net
Product manual;
Certificate of conformity;
Packing list.
QB/T1423-1991
5.3 The packaging, storage and transportation of paper reel shall comply with the relevant provisions of QB/T842.8. Additional remarks:
This standard is proposed by the Technical Equipment Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Light Industry Machinery Standardization Center. This standard is drafted by the Hangzhou Light Industry Machinery Design Institute of the Ministry of Light Industry and Xi'an Paper Machinery Factory. 26
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