This standard specifies the technical requirements for wire and cable plastic extrusion equipment. This standard applies to the design, manufacture, acceptance, identification and quality assessment of SP series and SL series plastic extrusion equipment for extruding wire and cable insulation and sheath. This standard should be used together with JB/T 5814.4 and JB/T 5819. JB/T 5820-1991 Technical requirements for wire and cable plastic extrusion equipment JB/T5820-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Wire and Cable Plastic Extrusion Equipment:
Technical Requirements
1 Subject Content and Scope of Application
This standard specifies the technical requirements for wire and cable plastic extrusion equipment. JB/T5820-91
This standard applies to the design, manufacture, acceptance, identification and quality assessment of SP series and SL series plastic extrusion equipment for extruding wire and cable insulation and protection.
This standard should be used together with JB/T5814.5 "Special Equipment for Wires and Cables - Types and Dimensions of Wire and Cable Plastic Extrusion Equipment". 2 Reference standards
GB2900
GB4004
GB4005
Electrical terminology
Wire and cable machine reels
Wire and cable delivery reels
GB4457~4460 Mechanical drawing
GB4728
JB4015
JB4032
Graphical symbols for electrical diagrams
Common parts for cable equipment|| tt||Retractable and retractable device
Common parts of cable equipment Traction device
JB/T5814.5
JB/T5819
Article Part 5
Basic parameters
Basic parameters of special equipment for wires and cables Part 5: Extrusion equipment Type and size of wire and cable plastic extrusion equipment JB/DQ8124 Basic technical requirements for cable equipment 3 Terminology
3.1 The terms of this standard adopt the interpretation of GB2900. 4 Basic technical requirements
4.1 General
4.1.1 The design drawings of each series of equipment shall comply with the provisions of GB4457~4460. Electrical graphic symbols shall comply with the provisions of GB4728. 4.1.21
4.1.3 Products shall be manufactured according to drawings and technical documents approved by the prescribed procedures. Self-made parts and components must be inspected and qualified according to regulations before they can be used for assembly. 4.1.4
Extrusion Equipment》 and JB/T5819&Electrical
Purchased parts and cooperative parts must have the manufacturer's product quality inspection certificate and can only be used for assembly after acceptance according to regulations. 4.1.5
The series composition of the product shall comply with the provisions of JB/T5814.5. 4.1.61
4.1.7 The type and size of the product shall comply with the provisions of JB/T5819, and the installation size and appearance size shall comply with the drawings. 4.1.8
The structure of the extruder should be convenient for the assembly, disassembly, cleaning and interchangeability of the screw. 4.2 General processing quality requirements
General mechanical processing shall comply with the provisions of JB/DQ8124.6. Approved by the Ministry of Machinery and Electronics Industry on October 17, 1991 134
Implemented on October 1, 1992
4.2.2 Castings shall comply with the provisions of JB/DQ8124.3. JB/T5820-91
4.2.3 Welded parts shall comply with the provisions of JB/DQ8124.4. Forgings shall comply with the provisions of JB/DQ8124.5.
Heat treatment shall comply with the provisions of JB/DQ8124.7. 4.2.5
4.2.6 Coating and appearance shall comply with the provisions of JB/DQ8124.11. 4.3 Assembly requirements
Before assembly, the accuracy of each link shall be reasonably allocated according to the drawings and assembly process documents. For interference fit or single matching, optional parts, the relevant dimensions shall be strictly re-inspected before assembly. 4.3.2
The level of the machine body, machine base, rotating body and reel rack shall only be adjusted, not forced. 4.3.3
The assembly of bearings shall comply with the provisions of JB/DQ8124.9. 4.3.5 The assembly of gears and worm transmission components shall comply with the provisions of JB/DQ8124.9. 4.3.6 The assembly of interference fits shall comply with the provisions of JB/DQ8124.9. 4.3.7
The assembly of fasteners shall comply with the provisions of JB/DQ8124.9. 4.3.8 The assembly of connecting parts shall comply with the provisions of JB/DQ8124.9. 4.3.9 The assembly of brakes shall comply with the provisions of JB/DQ8124.9. 0Assembly accuracy, except as otherwise specified in this standard, shall comply with the provisions of JB/DQ8124.9. 4.3.10
4.4 Electrical system
4.4.1 Electrical materials, independent components and self-contained parts must comply with their respective standards or technical requirements and can only be used after acceptance.
4.4.2 The design, assembly and processing of the electrical system shall comply with the provisions of JB/DQ8124.10. 4.5 Safety requirements
4.5.1 The equipment shall have various signs and labels for lubrication, operation (mechanical, electrical or pneumatic and hydraulic) and safety that meet the specified requirements. These signs and labels shall remain clear for a long time. 4.5.2 Parts that may automatically loosen during the operation of the equipment shall have anti-loosening devices, and high-speed reels, gears, guide wheels, swing arms, etc. shall have protective devices.
4.5.3 Trench covers shall be installed in trenches where equipment or components are installed or trenches at operating positions. 4.5.4 The equipment shall have a good electrical grounding device, and the grounding resistance shall comply with the provisions of JB/DQ8124.10. 4.6 Requirements for auxiliary devices
4.6.1 The wire-reeling device shall comply with the provisions of JB4015. 4.6.2 The traction device shall comply with the provisions of JB4032. 4.6.3 The wire-reeling and wire-reeling reels shall comply with the provisions of GB4004 and GB4005. 4.7 Plates and signs
4.7.1 The signs of electrical devices shall comply with the provisions of Article 4 of JB/DQ8124.10. 4.7.2 The nameplate of each device shall be fixed in an appropriate and obvious position. 4.7.3 The necessary plates shall be on the equipment, and the markings shall be clear and the position shall be correct. 4.7.4 The content and format of the nameplate and plate shall comply with special regulations. 5 Technical requirements
5.1 Processing accuracy
5.1.1 Screw (as shown in Figure 1).
The screw precision shall comply with the provisions of Table 1.
Screw series
Surface nitriding
Processing depth
0.40~0.60
External hardness
JB/T5820-91
Table 1-1
Surface roughness R.
Working part
Thread top, thread bottom
Note: Other materials are allowed to be sprayed or clad with resistant alloy on the thread Table 1-2
5.1.2 Barrel (as shown in Figure 2)
External D deviation
The barrel precision shall comply with the provisions of Table 2.
Circular runout tolerance value
Radial X
Recommended materials
Other parts
Nose surface Y
38CrMoAlA
GH-113
Coaxiality tolerance value
Machine gear series
JB/T5820-91
Surface nitriding depth
0.40~0.60
Straightness
Tolerance value
Note: 1) The tolerance value of circumferential runout Y is to be determined.
5.1.3 Machine head mold (as shown in Figure 3)
The mold accuracy should meet the requirements of Table 3.
5.2 Assembly accuracy
5.2.1 Screw and barrel
Circular runout
Tolerance value\
The assembly accuracy shall comply with the requirements of Table 4
Table 2-1
Working surface hardness
Table 2-2
Working surface surface roughness R,
Recommended material
38CrMOAIA
GH-113
The gap shall be uniform. When placed horizontally, the screws in the cylinder are allowed to contact each other. However, when running after adding lubricating oil, there shall be no sticking or scratching between the screw and the barrel.
Machine head specifications
90/100
140/150
2'51'51°
aMold core
Coaxiality
JB/T582091
Coaxiality
Coaxiality 2
bChess sleeve
Coaxiality
90,015
Blast rod in barrel
GH series
GN series
Verticality W
5.3 Noise
The noise of the equipment shall comply with the provisions of Table 5.
200,250
Note: Motor noise shall be assessed according to motor standards. 6 Packagingwww.bzxz.net
JB/T5820—91
6.1 The packaging of the product shall comply with the provisions of JB2759, be firm and reliable, have anti-rust, anti-leakage and moisture-proof measures, meet the requirements of land and water transportation, and comply with JB/DQ8124.1 Article 6 of the regulations for inspection.
6.2 The instructions and signs on the packaging box should be appropriately located, obvious and clear, and the contents of the signs are as follows: a.
Manufacturer name;
Product name and model;
Factory number and date;
Product gross weight and net weight, packaging dimensions, center of gravity, lifting line; transportation attention characters;
Packing number.
Before packaging the product, the following should be done:
Each moving part should be adjusted to the minimum outline size and fixed; various liquid substances such as oil and water in the product should be removed; the surface should be cleaned, and the unpainted metal surface should be coated with anti-corrosion grease. Each equipment should be accompanied by the following documents:
Product qualification certificate, test report provided when required by the user; product instruction manual;
Packing list.
The above documents should be packed in a moisture-proof bag and sealed and fixed in the No. 1 packaging box. Test and Acceptance
7.1 Products shall be inspected and qualified by the technical inspection department of the manufacturer before they can leave the factory. 7.2 Products shall be inspected in accordance with the provisions of Table 6.
Code: T——Type test
R—Routine test
S—Sampling test
Definition see JB/DQ8124.1.
7.3 The requirements specified in the design drawings and process technical documents shall be strictly inspected by the manufacturer in accordance with the manufacturing inspection procedures of the enterprise and records shall be kept.
Project name
Basic technical requirements
General requirements
Processing quality requirements
Assembly requirements
Electrical system
Safety requirements
Requirements for auxiliary devices
Signages and logos
Packing requirements
Processing accuracy
Machine head mold
Assembly accuracy
Screw and cylinder
Running test
Idle operation
Load operation
Additional instructions:
JB/T5820—91
Technical requirements
Comply with the provisions of Article 4.1 of this standard
Comply with the provisions of Article 4.2 of this standard
Comply with the provisions of Article 4.3 of this standard||tt| |Comply with Article 4.4 of this standard
Comply with Article 4.5 of this standard
Comply with Article 4.6 of this standard
Comply with Article 4.7 of this standard
Comply with Article 6 of this standard
Comply with Article 5.1.1 of this standard
Comply with Article 5.1.2 of this standard
Comply with Article 5.1.3 of this standard
Comply with Article 5.2.1 of this standard
Comply with Article 5.3 of this standard
Comply with JB/DQ8124.1
Comply with JB/DQ8124.1
Comply with JB/DQ8124.11
This standard is proposed and managed by Shanghai Cable Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by Shanghai Electric Machinery Factory and other units. The main drafters of this standard are Shao Shangqi and Ou Xuecheng. 140
Test category
According to JB/DQ8124.10
Test method
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