This standard specifies the model representation method, technical requirements, inspection rules, marking, packaging, transportation and storage of roller tea cutting machines. This standard applies to roller tea cutting machines. JB/T 6670-1993 Technical requirements for roller tea cutting machines JB/T6670-1993 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T6670~6671-93wwW.bzxz.Net
Roller Tea Cutter
Published on 1993-06-04
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1994-01-01
JB/T 6670-93
6671-93
Roller Tea Cutter
Roller Tea Cutter
Technical Conditions
Test Methods
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Machinery Industry Standard of the People's Republic of China
Roller Tea Cutter
Technical Conditions
Subject Content and Scope of Application
JB/T6670-93
This standard specifies the model representation method, technical requirements, inspection rules, marking, packaging, transportation and storage of roller tea cutters. This standard applies to roller tea cutters (hereinafter referred to as tea cutters). Cited standards
GB/T1804
GB1184
GB2828
GB9438
Technical conditions for high-quality carbon structural steel
·General tolerancesUnspecified tolerances for linear dimensions
Provisions for unspecified tolerances for shape and position tolerancesBatch-by-batch inspectionCount sampling procedures and sampling tables (applicable to inspection of continuous batches)Gray cast iron parts
GB/T13306
Product numbering rules for agricultural machinery
Painting of agricultural machinery
Models and representation methods
According to NJ8 9, the product model of the roll-type tea cutter is marked as: 6C
Effective length of single roll, mm
Number of rollers (single roll is not marked)
Roller-type tea cutter
Tea processing machinery
Marking example: The effective length of the cut is 800mm and the model of the double-roll tea cutter is 6CGQ-2×8004 Technical requirements
4.1 Performance requirements of the whole machine
4.1.1 When the first tea that is screened by a flat screen machine with a 4.75mm (4 mesh) screen for the first time is used as the raw material, the main performance indicators of the roller cutter shall comply with the requirements of the following table. Item
Cut rate per time %
Broken tea rate per time %
Productivity per unit width kg/(m·h)
Productivity per kilowatt-hour
kg/(kw·h)
Approved by the Ministry of Machinery Industry on June 4, 1993
Fried green tea
≥750
Dried green tea
≥450
≥620
Implemented on January 1, 1994
JB/T6670-93
4.1.2 The noise level of the roller cutter should not exceed 80dB(A) when it is unloaded. 4.1.3 The utilization efficiency of the roller cutter should not be less than 98% within the cumulative working time of 300h. 4.1.4 The temperature rise of the bearings in the operating parts shall not exceed 25°C, and the temperature of the motor shall not exceed the allowable temperature. 4.2 General requirements
The cutting machine shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.2.1 The blade material of the lathe
roller cutting machine shall be 45 steel in GB699, and the material of the lathe shall be manufactured according to HT200 specified in GB9438. 4.2.2 The materials of the parts in direct contact with the tea leaves shall not affect the quality of the tea leaves. The purchased parts of the cutting machine (motors, electrical appliances, etc.) shall comply with the current relevant standards and have a certificate of conformity. The exposed rotating parts of the cutting machine shall have safety protection devices, and the parts that are easy to loose shall have reliable anti-loosening measures. The machined surface of the parts shall be free of rust and other mechanical damage. The casting surface shall not have casting defects such as cracks, sand holes, pores, etc. that affect the strength and appearance quality. The non-machined surface shall be sand-cleared and coated with 4.2.7
anti-rust paint.
4.2.8 Forgings shall not have forging defects such as interlayer, folding, cracks, overburning, and marks. 4.2.9 The welds of welded parts shall be firm and flat, and shall not have welding defects such as burn-through, slag inclusion, and incomplete penetration. 4.2.10 The surface of sheet metal parts shall be smooth and flat, and shall not have defects such as cracks, deformation, and hammer marks that obviously affect the appearance quality. The bite and press shall be uniform and firm. The limit deviation of its un-toleranced dimensions shall comply with the provisions of Class C (rough grade) in GB/T1804. 4.2.11 Stamping parts shall be smooth and flat, and shall not have defects such as cracks, warping, flash, burrs, and obvious pull marks. The limit deviation of its un-toleranced dimensions shall comply with the provisions of Class M (medium grade) in GB/T1804. The limit deviation of the un-toleranced dimensions of machining shall comply with the provisions of Class M (medium grade) in GB/T1804. 4.2.12
4.2.13 Fastening parts must be treated with rust prevention. The paint of the cutting machine should meet the quality requirements of JQ-1-NP coating in NJ/Z3. 4.2.14
4.3 Assembly requirements
4.3.1 Parts must be inspected and qualified, and purchased parts and outsourced parts must have a certificate of conformity before assembly. 4.3.2 Each rotating part and adjustment mechanism should be flexible and reliable, and there should be no jamming. 4.3.3
The gap between the effective length of the cutter and the entire cylindrical surface of the roller should not exceed 0.60mm after adjustment. The lubrication parts of the cutting machine should not leak oil. 4.3.4
The cutting machine should be installed firmly and reliably, run smoothly, and there should be no abnormal noise. 5 Inspection rules
Each roller cutting machine must be inspected and qualified by the inspection department of the manufacturer, and can only be shipped with a product certificate. 5.1
5.2 Each cutting machine must undergo a 5-minute idle operation test before leaving the factory. The test must comply with the provisions of Articles 4.3.2 to 4.3.5 of this standard. 5.3 Random sampling of no less than 3 units of each batch of products shall be carried out to check the appearance and assembly quality. If there are unqualified units, the number shall be doubled for re-inspection. If there are still unqualified units, the batch of products shall be unqualified. 5.4 The ordering unit has the right to conduct random inspections on the manufacturing quality of the products in accordance with the relevant provisions of this standard. The sampling plan shall be carried out in accordance with the provisions of GB2828. The sampling batch and the qualified quality level AQL value shall be agreed upon by the supply and demand parties. 5.5 Under the conditions of compliance with the use and storage rules specified in the product manual provided by the manufacturer, if the product is damaged and cannot be used normally within one year from the date of delivery (except for normal wear and tear) due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge. 6 Marking, packaging, transportation and storage
6.1 Each roller cutter should have a nameplate fixed in a conspicuous position, and its specifications should comply with the provisions of GB/T13306. The content of the nameplate is as follows:
Product name and model;
Main technical parameters;
Factory number;
Factory date:
Manufacturer name.
JB/T 6670- 93
The packaging of the product shall comply with the relevant regulations of the transportation department. The packaging shall be firm and reliable. There shall be rainproof facilities. The markings on the outer wall of the packaging are as follows:
Product name and model:
Manufacturer name;
Outer wall dimensions of the packaging box (length × width × height): Shipping address and name of the consignee:
"Handle with care", "Do not invert", "Moisture-proof" and other words or markings. Each product shall be accompanied by the following technical documents: a.
Packing list;
Product certificate:
Product manual:
User opinion solicitation letter.
The product shall be stored in a dry, ventilated room or rainproof place without harmful gases. Additional remarks:
This standard is proposed and managed by the China Agricultural Mechanization Science Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Anhui Agricultural Machinery Research Institute. The main drafters of this standard are Yu Zongrong, Guan Zhimin, Sun Liulian, Pan Shenwen and Jiang Hongji.
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