CN-120299785-B - Manufacturing device and method for high-temperature special cable

CN120299785BCN 120299785 BCN120299785 BCN 120299785BCN-120299785-B

Abstract

The invention discloses a manufacturing device and a manufacturing method of a high-temperature special cable, belongs to the technical field of cables, and aims to solve the problem that the high-temperature resistance and the impact resistance of the existing special cable are difficult to meet simultaneously; according to the invention, the mineral mica layer is arranged on the periphery of the wire core, so that the wire core has good high temperature resistance and fire resistance, the cross-linked insulating layer is arranged on the periphery of the mineral mica layer, the overall heat resistance is further improved, and finally the flame-retardant sheath is prepared by mixing low-smoke halogen-free flame-retardant polyolefin, wollastonite powder and polytetrafluoroethylene micropowder.

Inventors

SHEN GUOCHUN
CAI RUI
MIAO YUEE
ZHOU XUEHUI

Assignees

诺迅(江苏)线缆科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250411

Claims (4)

1. The manufacturing device of the high-temperature special cable is characterized by comprising a machine table (1), an extrusion part (2) arranged at the upper end of the machine table (1) and a feeding part (3) arranged at the upper end of the extrusion part (2), wherein one side of the machine table (1) is provided with a mounting table (4), the upper end of the mounting table (4) is provided with a machine case (41), one side of the mounting table (4) is provided with a base (5), the upper end of the base (5) is provided with a main motor (6), one side of the main motor (6) is provided with a transmission part (7), the main motor (6) is connected with a gear transmission group (42) arranged in the machine case (41) through the transmission part (7), and one end of the gear transmission group (42) is connected with the extrusion part (2); The extrusion part (2) comprises a side shield A (21) and a side shield B (22) which are arranged at the upper end of the machine table (1), the side shield A (21) and the side shield B (22) are oppositely arranged, an extrusion sleeve (23) is arranged between the side shield A (21) and the side shield B (22), the extrusion screw (9) is arranged inside the extrusion sleeve (23), an electric heating assembly (25) is arranged on the outer surface of the extrusion sleeve (23), the electric heating assembly (25) is externally connected with a power supply, a blanking opening (24) is formed in the outer surface of one end of the extrusion sleeve (23), and the blanking opening (24) is connected with the feeding part (3); The feeding component (3) comprises a feeding hopper (31) arranged on the outer surface of the extrusion sleeve (23), an observation window (32) arranged on one side of the feeding hopper (31), and a discharge pipe (85) arranged on the outer surface of the feeding hopper (31), wherein a weighing component (8) is further arranged on the outer surface of the feeding hopper (31), the weighing component (8) comprises a containing box (81) arranged on the outer surface of the feeding hopper (31), the containing box (81) is communicated with the feeding hopper (31), a containing bin (82) is arranged in the containing box (81), an electric push rod is arranged in the containing bin (82), a bearing plate (83) is arranged at one end of the electric push rod, a weighing unit (84) is embedded on the upper surface of the bearing plate (83), an inclined scraper (85) is arranged on the inner wall of the containing bin (82), a cavity is formed in the inner wall of the containing box (81), a push plate (86) and a plug pipe (87) are arranged in the cavity, one end of the push plate (86) is inserted into the plug pipe (87), a magnetic plug (87) is arranged at one end of the push plate (87) under the bearing plate (831), a magnetic plug (88) is arranged at one end of the magnetic plug (831), one end of return bend (88) extends to inside oblique scraper blade (85), be provided with oblique spray tube (851) on the surface of oblique scraper blade (85), the inside of oblique scraper blade (85) is provided with branch pipe (852), the inside of branch pipe (852) is provided with check valve A (853), oblique spray tube (851) are linked together with return bend (88) through branch pipe (852), one end of oblique scraper blade (85) is provided with rubber cover (854), one end of return bend (88) corresponds with rubber cover (854), one end inside that return bend (88) is close to rubber cover (854) is provided with check valve B (855).
2. The manufacturing device of the high-temperature special cable as claimed in claim 1, wherein the transmission part (7) comprises a transmission wheel A (71) arranged at the output end of the main motor (6), a transmission belt (73) sleeved on the outer surface of the transmission wheel A (71), and a transmission wheel B (72) arranged on the outer surface of the transmission belt (73), a transmission rod (74) is arranged at the center of the transmission wheel B (72), one end of the transmission rod (74) is connected with the gear transmission group (42), a linkage rod (43) is arranged on the outer surface of the gear transmission group (42), an extrusion screw (9) is arranged at one end of the linkage rod (43), and the extrusion screw (9) is positioned inside the extrusion part (2).
3. The manufacturing device of the high-temperature special cable as defined in claim 2, wherein a small fan (27) is arranged at the lower end of the electric heating assembly (25), a small motor (28) is arranged at one side of the small fan (27), the output end of the small motor (28) is connected with a rotating shaft of the small fan (27), the electric heating assembly (25) comprises a heat transfer cylinder (251) sleeved on the outer surface of the extrusion sleeve (23), an installation box (252) arranged at the lower end of the heat transfer cylinder (251), and an electric heating plate (253) arranged in the installation box (252) and the heat transfer cylinder (251), one side of the installation box (252) is communicated with an air outlet of the small fan (27), and the other side of the installation box (252) is communicated with the heat transfer cylinder (251).
4. The manufacturing device of the high-temperature special cable as claimed in claim 3, wherein one end of the extrusion sleeve (23) is provided with an extrusion plate (210), a connecting groove (211) is formed in the outer surface of the extrusion plate (210), the extrusion plate (210) is connected with the extrusion sleeve (23) through the connecting groove (211), an extrusion hole (212) is formed in the center of the extrusion plate (210), one side of the extrusion plate (210) is provided with an external connection pipe (213), and the external connection pipe (213) corresponds to the extrusion hole (212).

Description

Manufacturing device and method for high-temperature special cable Technical Field The invention relates to the technical field of cables, in particular to a device and a method for manufacturing a high-temperature special cable. Background The special cable is a cable product with special performance, structure or function and suitable for special environment or special application scene, and compared with the common cable, the special cable can meet the safe and reliable transmission requirements under extreme conditions of high temperature, high voltage, corrosion, strong electromagnetic interference and the like through material innovation, structural design or process optimization. In China patent publication No. CN116959803A, a cable and a cable manufacturing method are provided, wherein the cable manufacturing method comprises the steps of machining an insulator to enable the upper surface of the insulator to reach a first height, paving a first wire core group on the upper surface of the insulator, enabling the upper surface of the insulator to reach a second height and enabling the insulator to cover the first wire core group, paving a second wire core group on the upper surface of the insulator, enabling the second wire core group to comprise a plurality of first wire cores and enabling the plurality of first wire cores of the second wire core group to be arranged at intervals in the width direction of the insulator, and machining the insulator to enable the upper surface of the insulator to reach a third height and enabling the insulator to cover the first wire core group and enabling the third height to be larger than the second height. The cable manufacturing method can integrate a plurality of wire harnesses together, and can ensure that a plurality of core wires are positioned at respective positions and have stable relative positions; however, in the prior art, the high temperature resistance of the manufactured special cable is poor, and in the process of manufacturing the special cable, wollastonite is weak in interface combination with polyolefin, and is easy to agglomerate, so that the overall mechanical property is reduced, the overall high temperature resistance is improved, the overall impact resistance is reduced, the service life is shortened, and the cost is high. Therefore, we propose a high temperature special cable and its manufacturing method. Disclosure of Invention The invention aims to provide a high-temperature special cable and a manufacturing method thereof, which solve the problem that the high-temperature resistance and impact resistance of the existing special cable in the background technology are difficult to meet simultaneously. In order to achieve the purpose, the invention provides the following technical scheme that the manufacturing method of the high-temperature special cable comprises the following steps of: s1, preparing a wire core, namely twisting a plurality of copper wires into a metal conductor wire core, and wrapping an insulating material on the peripheral surface of the metal conductor wire core; s2, wrapping the mineral mica layer, namely tightly wrapping the mineral mica tape around the periphery of the conductor by adopting a wrapping machine, wherein wrapping tension and covering rate are controlled well in the wrapping process so as to ensure the integrity and continuity of the mineral mica layer; S3, extruding a crosslinked insulating layer, namely adding a crosslinked polyethylene raw material into a cable manufacturing device, melting and extruding the crosslinked polyethylene through the cable manufacturing device, and coating the melted crosslinked polyethylene on the periphery of a conductor through an extrusion die head; S4, adding a flame-retardant filling layer, namely filling a flame-retardant polypropylene material into the gaps of the conductor in the cabling process to ensure the roundness and stability of the cable, wherein the filling uniformity and compactness are required to be noted in the filling process, so that the occurrence of holes and gaps is avoided; S5, coating the ceramic fireproof layer, namely extruding ceramic silicon rubber by using a cable manufacturing device, and coating the ceramic silicon rubber on the periphery of the conductor filled with the flame-retardant filling layer by using an extrusion die head; And S6, extruding the flame-retardant sheath, namely adding the low-smoke halogen-free flame-retardant polyolefin material and the mixture into a cable manufacturing device according to a proportion, extruding the low-smoke halogen-free flame-retardant polyolefin material and the mixture through the cable manufacturing device, and coating the low-smoke halogen-free flame-retardant polyolefin material and the mixture on the periphery of the ceramic fireproof layer by using an extrusion die head. Further, the outer surface of the wire core is wrapped with a mineral mica layer, the outer surface of the mineral m