JB/T 53121-1999 Product quality classification of turntable injection molding machines for shoes JB/T53121-1999 standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T53121-1999bzxZ.net
Turntable Injection Molding Machine for Shoes
Product Quality Grading
(For Internal Use)
Published on 1999-12-30
National Bureau of Machinery Industry
Implemented on 2000-06-01
JB/T53121-1999
This standard is a revision of JB/T53121-94 "Turntable Injection Molding Machine for Shoes Product Quality Grading". During the revision, the original standard was edited and the main technical content remained unchanged. This standard replaces JB/T53121-94 from the date of implementation. This standard was proposed and managed by the National Technical Committee for Rubber and Plastic Machinery Standardization and the Plastic Machinery Standardization Sub-Technical Committee. The responsible drafting unit of this standard: Hubei Echeng General Machinery Group Corporation. The main drafters of this standard are Zhou Hanbo and Chen Donglin. I
1 Scope
Machinery Industry Standard of the People's Republic of China
Rotary Injection Molding Machine for Shoes
Product Quality Grading
(Internal Use)
JB/T53121-1999
Replaces JB/T53121-94
This standard specifies the quality grade, test method, sampling and evaluation method of rotary injection molding machine for shoes. This standard is applicable to the product quality grading of rotary injection molding machine for shoes (hereinafter referred to as shoe machine) specified in JB/T5289-1991 "Rotary Injection Molding Machine for Shoes".
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in 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 latest version of the following standards. JB/T52891991
Turntable Injection Molding Machine for Shoes
3 Product Quality Grade
Shoe machine products are divided into three grades: qualified products, first-class products and superior products according to their quality level and use value. In addition to complying with the provisions of JB/T5289, the assessment items and index requirements of each grade of shoe machine products shall also comply with the provisions of Table 1 and Table 2. 1 The main performance parameters shall comply with the provisions of Table 1. The measured injection quality, injection rate and plasticizing capacity shall not be less than 95% of the values ​​in the table. 3.1
Table 1 Performance parameters
Assessment items
Measured injection quality
Injection rate
Plasticizing capacity
Rated output
Unit consumption index
kW/(double/h)
Qualified products
≥500
≥100
≥100
Noise and the number of oil leakage in the hydraulic system shall comply with the requirements of Table 2. Approved by State Machinery Industry Bureau on December 30, 1999Product quality grade
≥515
≥105
≥110
Superior product
≥ 530
≥110
≥ 120
Implemented on June 1, 2000
Assessment items
Noise (sound pressure level)
dB （A）
Rated working pressure
Number of oil leakage
Test method
JB/T53121-1999
Product test method shall comply with the provisions of JB/T5289. 5 Sampling and evaluation method
Noise and oil leakage number
Qualified products
Superior products
The sampled products must be batch products that have passed the inspection of the manufacturer's inspection department and are not unpacked at the user's place or have been put into storage. The sampling samples shall not be less than 2 units. All test items shall be tested and evaluated at one time to determine the product quality grade. The product must meet the technical requirements of all assessment items of the grade. Otherwise, the grade shall be determined according to the lowest indicator achieved. 5.2
People's Republic of China
Machinery Industry Standard
Shoe turntable injection molding machine
Product quality classification
(internal use)
JB/T 53121-1999
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2, Shouti South Road, Beijing
Postal Code: 100044)
Sheet 1/2 Words 6000
Format 880×1230
First edition in April 2000
First printing in April 2000
Price 10.00 yuan
Number 1-500
Number 99-1490
Mechanical Industry Standards Service Network: http:/wwwJB.ac.cn666
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