This standard specifies the types and dimensions of wire and cable plastic extrusion equipment. This standard applies to the design, manufacture, acceptance, identification and quality assessment of wire and cable plastic insulation, plastic sheath or other cable plastic structural parts extrusion equipment. This standard should be used together with JB/T 5814.5. JB/T 5819-1991 Types and dimensions of wire and cable plastic extrusion equipment JB/T5819-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Plastic Extrusion Equipment for Wires and Cables
1 Subject Content and Scope of Application bZxz.net
Type Dimensions
This standard specifies the type dimensions of plastic extrusion equipment for wires and cables. JB/T5819-91
This standard applies to the design, manufacture, acceptance, identification and quality assessment of extrusion equipment for plastic insulation, plastic sheath or other cable plastic structural components of wires and cables.
Use together with Part 5: Extrusion Equipment. This standard should be combined with JB/T5814.5 "Basic parameters of special equipment for wires and cables 2 Reference standards
Priority numbers and priority number systems
GB2900
Electrical terminology
GB4004 Wire and cable machine reels
JB4032
Common parts of cable equipment traction device
JB/T5814.5 Basic parameters of special equipment for wires and cables Part 5: Extrusion equipment JB/DQ8193 PND series machine reels
3 Terminology
3.1 The terms of this standard adopt the interpretation of GB2900 and related standards. 3.2 Extruder for conventional plastics Extruder for conventional plastics The processing temperature of the extruded plastic is 300C or below. 3.3 Extruder for high temperature plastics Extruder for high temperature plastics The processing temperature of the extruded plastic is above 300C. 3.4 Simultaneous extrusion Two (or more) screws extrude two (or more) plastics into a die head at the same time to form them, and coat them on the same layer of insulation or the same component, such as extruding two-color insulation or extruding the insulation layer and jacket at one time (see Figure 1). 5
a Common extruder; b Two-color insulated wire
1--Conductor; 2-Extrusion screw; 3-Marking coating; 4-Insulation layer; 5-Conductor Figure 1
Approved by the Ministry of Machinery and Electronics Industry on October 17, 1991 and implemented on October 1, 1992
3.5 Seperate extrusion JB/T5819-91
Two (or more) extruders extrude the same or different two (or more) plastics in sequence and coat them on the cable components according to the inner layer and outer layer (see Figure 2).
1—conductor; 2—extruder head: 3—jacket: 4—insulation; 5—conductor Figure 2
4 Naming and code
4.1 Code
4.1.1 Category code
Extrusion equipment class S
4.1.2 Series code
Jingtong extruder series
Cross-linking extruder series
4.1.3 Characteristic code||t t||Ordinary plastic extrusion
High temperature plastic extrusion
Physical crosslinking W
Chemical crosslinking
4.1.4 Specification code
4.2 Representation method
Symbol JB/T5814.5 stipulates
4.2.1 Plastic extruder is represented by name code and specification code, which is composed as follows: /±/
Standard number
Screw diameter/length-to-diameter ratio
Characteristic code and derived code
Series code
Note: "two" means common-mode extrusion and "ten" means split-mode extrusion. 4.2.2 Example
Plastic extruder, screw diameter 30mm, length-to-diameter ratio 25, expressed as: Ordinary type SPV30/25JB/T5819-91
Commercial temperature type SPF30/25JB/T5819- 91
Plastic extruder, two-color co-mold extrusion, screw diameter and aspect ratio are 45/25 and 80/20 respectively, expressed as: SPV45/25-30/20JB/T5819—91
JB/T5819-91
c. Cross-linking extruder, inner layer extrusion screw specification is 65/25, middle layer extrusion screw specification is 150/20, outer layer extrusion screw specification is 90/ 25. The middle layer and the outer layer are co-extruded, expressed as:
SLW65/25+150/20-90/25JB/T5819—915 General provisions
5.1 The determination of dimensions should be based on a scientific basis, and the provisions of GB321 should be implemented as much as possible, and the values ​​should be taken according to the priority number or priority number system. 5.2 The key elements in the use of the product should clearly specify the dimensions a.
Interface dimensions inside and outside the product;
Interchangeability dimensions:
Dimensions indicating series specifications:
Installation anchor screw hole dimensions and related process dimensions. 5.3 The main dimensions of the extrusion part, wire-reeling device, traction device, cooling device, tension device and electrical control part of the plastic extruder should be interconnected to ensure the coordinated functions of each part. 5.4 The size of the traction device should comply with the provisions of JB4032 . 5.5 The size of the wire drum of the take-up device shall be processed according to the type and size of the wire drum of GB4004 and GB4005. For d, which is 630 or less, the method of replacing the top cone shall be adopted to realize the common use of PND and PN type wire drums of the same specification. For d, which is more than 630, the common use of PN type and PL type shall be realized. 6 Screw
6.1 The type is shown in Figure 3.
6.2 The size shall comply with the provisions of Table 1.
00000:006
a-Ordinary type
b-Separation type
A-coincides with the rear wall of the hopper mouth;G-connection size of the center cooling hole of the screw-positioning length;d:-screw connection size;D-screw diameter;L-screw working part length;L--screw total length:d;-screw positioning size:l2--connection length Figure 3
7 Head
7.1 The type is shown in Figure 4.
7.2 The dimensions shall comply with the provisions of Table 2.
JB/T581991
Positioning dimensions
4-22×19×8
628×23×6
6-42X36×10
Hong69H9
2G11/2*
90/100
140/150
Right angle
Positioning dimensions
p100H9
$140H9|| tt||$170H9
$220H9
JB/T5819-91
a-Right angle type
b-120° inclined type
Table 2-1 Figure a1 Head
Connection size
18+year 945
Process size
0.15~1.00
1.00~4.00
2.50~10.00
6. 00~25. 00
12.50~40.00
16.00~60.00
30.00~90.00
35.00~140. 00
Outlet Dax
90/100
140/150
（20/25）
(50/60)
（88/100)
8 Mould
Right angle type
8.1 The type is shown in Figure 5.
Positioning size
$100H9
$140H9
$220H9
The size should conform to the requirements of Table 3.
JB/T5819-91
Figure a2 and b head (not recommended)
Table 2-2
Connection size
M80×2
M85×2
M110×2
M50×2
a-Mold core
M180×3
Process size
Reference specification
Incoming line d
0.15~1.00
0.50~2.00
1.00~4.00
2.50~10.00
6.00~25.00
12.50~40.00
16.00~60.0 0
30.00~90. 00
35.00140. 00
0.50~2.70
2.5020.00
12.00~50.00
26.00~88.00
b-chess set
d, D-positioning size;-positioning length; L-total length; D,-connection size di,d:D,l-Process Dimensions Drawing 5
Right Angle Machine Head Specifications
Outlet Wire Da
Right Angle Machine Head Specifications
90/100
140/150
Note: 1) Reference value,
2) Allowable D,=D.
Cross-linking device
To be determined.
Cooling device
To be determined.
Additional Notes:
JB/T5819-91
Continued Table 3
This standard was 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. D
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