CN107331473A - The processing technology and system of processing of multisheath cable - Google Patents
The processing technology and system of processing of multisheath cable Download PDFInfo
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- CN107331473A CN107331473A CN201710486969.8A CN201710486969A CN107331473A CN 107331473 A CN107331473 A CN 107331473A CN 201710486969 A CN201710486969 A CN 201710486969A CN 107331473 A CN107331473 A CN 107331473A
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- 238000012545 processing Methods 0.000 title claims abstract description 32
- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 53
- 238000001125 extrusion Methods 0.000 claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 52
- 238000004049 embossing Methods 0.000 claims description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 20
- 238000010892 electric spark Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims 1
- 230000000994 depressogenic effect Effects 0.000 abstract description 8
- 230000004888 barrier function Effects 0.000 abstract 5
- 230000007246 mechanism Effects 0.000 description 65
- 238000003825 pressing Methods 0.000 description 32
- 239000000463 material Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 7
- 230000000295 complement effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/141—Insulating conductors or cables by extrusion of two or more insulating layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/145—Pretreatment or after-treatment
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to cable production technical field, the processing technology and system of processing of a kind of multisheath cable are specifically disclosed, including pass through the first insulating barrier of first time extrusion process extrusion；Imprint process is carried out in the outer surface of the first insulating barrier, the outer surface of the first insulating barrier is formed the first depressed part；Pass through the insulating barrier of outer surface extrusion second of the first insulating barrier of second of extrusion process after imprinting.The processing technology and system of processing for the multisheath cable that the present invention is provided, can use common extrusion moulding apparatus to produce multisheath cable, and technique is simple, and equipment cost is cheap.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to a processing technology and a processing system of a multilayer sheath cable.
Background
The outermost insulation layer of the cable is called the jacket. The common sheath is made of one material, so that the process is simple and the production cost is low. And the other sheath is made of two layers of materials, and the performances of the two materials in the double-layer sheath can be complemented with each other, so that the sheath with more excellent performance is obtained.
The double-layer co-extrusion technology used in the cable industry is mainly realized by special double-layer co-extrusion equipment, namely, one piece of equipment simultaneously extrudes two layers of insulating materials, but the equipment is expensive and has higher requirements on processing materials and process control.
Therefore, a process and a system for processing a multi-layer sheathed cable, which are simple and low in cost, are needed.
Disclosure of Invention
One object of the present invention is: the processing technology of the multilayer sheathed cable is simple and low in cost.
Another object of the invention is: provides a processing system of a multilayer sheathed cable, which can realize the production of the multilayer sheathed cable by using a common extrusion molding device.
To achieve the object, in one aspect, the present invention provides a process for manufacturing a multi-layer sheathed cable, comprising:
extruding a first insulating layer through a first extrusion process;
carrying out an imprinting process on the outer surface of the first insulating layer to form a first sunken part on the outer surface of the first insulating layer;
and extruding a second insulating layer on the outer surface of the embossed first insulating layer through a second extrusion molding process.
Preferably, an imprinting process is performed on the outer surface of the second insulating layer, so that a second concave portion is formed on the outer surface of the second insulating layer; and extruding a third insulating layer on the outer surface of the embossed second insulating layer through a third extrusion molding process, thereby obtaining the three-layer sheathed cable. The operations of stamping and extrusion molding are repeated, and four-layer sheathed cables, five-layer sheathed cables or even more-layer sheathed cables can be manufactured.
Specifically, double-layer co-extrusion is the simultaneous heating and extrusion molding of two layers of materials, so that the layers are firmly and reliably combined. If different material layers are simply extruded for multiple times (the extrusion process is short), the effect of a multilayer sheath is seemingly realized on the surface, but because the extrusion process finishes one layer before the next layer, the adjacent two layers cannot be firmly and reliably connected due to the difference of the molecular structure, the material components and the like of the materials of each layer, and relative sliding and rotation are easy to occur. Therefore, the first depressed parts such as the spiral groove, the annular groove, the pit blind hole and the like are stamped on the outer surface of the first insulating layer through the stamping process, then the second insulating layer is extruded, and the material of the second insulating layer can enter the first depressed parts during the second extrusion molding process. After cooling, the second insulating layer is seen to be provided with a first protruding part at one side close to the first insulating layer, and the first protruding part is embedded into the first concave part. Therefore, the first insulating layer and the second insulating layer can be firmly and reliably connected, and relative sliding and rotation are not easy to occur. Furthermore, the process only needs a common extrusion molding device with low cost, and does not need special double-layer co-extrusion equipment. Furthermore, the number of layers that multilayer equipment can realize is limited after all, and to this technical scheme, through stamp out the second depressed part on the second insulating layer then extrude the third insulating layer at the surface of second insulating layer, the second bulge embedding of third insulating layer in the second depressed part, and then can realize the production of three-layer sheath, so on and so on, this technical scheme can use ordinary extrusion molding device to produce the cable that has four layers, five layers or even more sheaths. The technical scheme disclosed by the invention can achieve the effect of double-layer co-extrusion or multi-layer co-extrusion cables of import equipment, but only needs the existing general common equipment, and has the advantages of simple processing, low additional equipment cost, high process feasibility and simple operation.
As a preferred embodiment, before the imprinting process is performed on the outer surface of the first insulating layer, the method further includes:
cooling the temperature of the first insulating layer to a imprint temperature, the imprint temperature being greater than or equal to 90 ℃ and less than or equal to 120 ℃.
Specifically, the imprinting temperature should not be too high, and the first depressed portion is prone to deform after cooling, and generate defects such as glue lines, and the imprinting device is prone to adhere to an insulating material. The imprinting temperature is not low, the imprinting temperature is low, the first insulating layer is easy to harden, the difficulty of extruding the first concave part is increased, and the loss of the imprinting device is large. According to a lot of tests, when the stamping temperature is greater than or equal to 90 ℃ and less than or equal to 120 ℃, the stamping effect is good, and the bonding firmness of the first insulating layer and the second insulating layer is high.
Preferably, the imprint temperature is greater than or equal to 100 ℃ and less than or equal to 110 ℃.
Specifically, it was found from a large number of experiments that when the imprinting temperature is greater than or equal to 100 ℃ and less than or equal to 110 ℃, the imprinting effect is the best and the bonding firmness of the first insulating layer and the second insulating layer is the highest.
Further, the cooling the temperature of the first insulating layer to the imprint temperature is specifically:
immersing the first insulating layer in hot water at 80 ℃ or more and at 90 ℃ or less, and cooling the first insulating layer to the imprint temperature.
Particularly, by hot water cooling, the cooling efficiency and the required cooling temperature can be effectively ensured.
As a preferred embodiment, the method further comprises the following steps between the embossing process and the second extrusion process:
and detecting the damage of the first insulating layer.
Specifically, the damage detection is performed to detect whether the first insulating layer is damaged in the imprinting process, so that the core wire, the shielding layer and the like inside are exposed, and further, safety accidents such as electric leakage and the like in the subsequent use process are avoided.
Further, the detecting the damage of the first insulating layer specifically includes:
and detecting whether the first insulating layer is damaged or not by an electric spark detection method.
Particularly, whether the first insulating layer is damaged or not is detected through an electric spark detection method, so that the detection is simple and convenient, and the price is low.
Preferably, the presence or absence of breakage of the first insulating layer is detected by sonar detection method or infrared detection method.
Specifically, whether the first insulating layer is damaged or not is detected through a sonar flaw detection method or an infrared detection method, the accuracy is high, no electric shock hazard exists, and the method is safe and reliable.
In another aspect, the present invention provides a processing system for a multilayer sheathed cable, comprising a first extruder, an embossing device, and a second extruder in this order from upstream of the processing system for the multilayer sheathed cable to downstream of the processing system for the multilayer sheathed cable.
Specifically, a first extruder is used for forming a first insulating layer, and an imprinting device is used for imprinting a first concave part on the outer surface of the first insulating layer; a second extruder is used to form the second insulating layer.
Preferably, the production of a three-layer sheathed cable is achieved by providing a third extruder downstream of said second extruder and a further embossing device between the second extruder and the third extruder. By analogy, the production of four-layer, five-layer or even more-layer sheath cables can be realized.
Specifically, the insulating material in the first extruder is different from the insulating material in the second extruder. The different materials are complementary in performance, so that the comprehensive performance of the sheath is more excellent.
As a preferred embodiment, a first cooling device is provided between the first extruder and the embossing device;
the first cooling device comprises a first water tank;
or,
the first cooling device includes a first fan.
Particularly, the first water tank is arranged for water cooling, so that the cooling efficiency is high, and the temperature controllability is strong; the air cooling is simple and convenient through the first fan, and water resources are saved.
In a preferred embodiment, a line-frequency spark device is provided between the embossing device and the second extruder.
Specifically, the power frequency spark equipment is used for performing electric spark detection and detecting whether the first insulating layer is damaged or not.
As a preferred embodiment, the wire collecting device further comprises a wire collecting device;
the take-up device is located downstream of the second extruder.
Specifically, the take-up device provides traction to the multi-layer jacketed cable to keep the multi-layer jacketed cable moving from upstream to downstream.
Further, a second cooling device is arranged between the second plastic extruding machine and the take-up device;
the second cooling device comprises a second water tank;
or,
the second cooling device includes a second fan.
Particularly, the second water tank is arranged for water cooling, so that the cooling efficiency is high, and the temperature controllability is strong; the air cooling is simple and convenient through the second fan, and water resources are saved. And (4) cooling and then taking up the cable to prevent the cable from being wound and stacked at high temperature.
The invention has the beneficial effects that: the processing technology and the processing system of the multilayer sheath cable are provided, the impression is added between two times of extrusion molding, and then the common extrusion molding device can be used for producing the multilayer sheath cable with reliable connection, the technology is simple, and the equipment cost is low.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
FIG. 1 is a schematic diagram of a process for manufacturing a multi-layer sheathed cable according to one embodiment;
FIG. 2 is a schematic view of a processing system for a multi-layer jacketed cable provided in the second embodiment;
FIG. 3 is a schematic structural view of a multilayer sheathed cable provided in the third embodiment;
FIG. 4 is a schematic structural diagram of an imprint apparatus according to a fourth embodiment;
FIG. 5 is a schematic view of a first embossing mechanism including two first nip rollers;
FIG. 6 is a schematic view of a first press roll with a first embossing pattern in the form of diagonal lines;
FIG. 7 is a schematic view of a first embossing bumped first pressure roller;
fig. 8 is a schematic view of a first pressure roller with a first embossing as a texture.
In the figure:
1. a wire outlet machine; 2. a first extruder; 3. a first cooling device;
4. an imprint device; 401. a first embossing mechanism; 4011. a first press roll; 402. a second embossing mechanism; 403. a third embossing mechanism; 404. a fourth embossing mechanism; 405. an upper cross beam; 406. a left vertical plate; 407. a lower cross beam; 408. a right vertical plate; 409. a first splint; 410. a second splint; 411. a third splint; 412. a fourth splint;
5. a power frequency spark device; 6. a second extruder; 7. a second cooling device; 8. a take-up device;
9. a multi-layer jacketed cable; 901. an insulated core wire; 902. wrapping a tape; 903. a shielding layer; 904. a metal mesh grid; 905. a first insulating layer; 906. a second insulating layer; 9061. a first protrusion.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
A process for manufacturing a multi-layer sheathed cable 9, as shown in fig. 1, comprises:
s10: a first insulating layer 905 is extruded through a first extrusion process;
specifically, the operation temperature of the first extrusion molding process is 140-180 ℃, the temperature is too low, the extrusion molding is difficult, and the occurrence of end plugs is easy; the temperature is too high, and carbonization is easy to occur.
S11: cooling the temperature of the first insulating layer 905 to the imprint temperature;
further, in this embodiment, the imprinting temperature is greater than or equal to 90 ℃ and less than or equal to 120 ℃. In other embodiments, the imprinting temperature is greater than or equal to 100 ℃ and less than or equal to 110 ℃. Specifically, the imprinting temperature should not be too high, and the first depressed portion is prone to be deformed after cooling, and to generate defects such as glue lines, and the imprinting device 4 is prone to be adhered with an insulating material. The imprinting temperature is not too low, the imprinting temperature is too low, the first insulating layer 905 is easily hardened, difficulty in pressing the first concave portion is increased, and loss of the imprinting device 4 is large. According to a lot of tests, when the imprinting temperature is greater than or equal to 90 ℃ and less than or equal to 120 ℃, the imprinting effect is good, and the bonding firmness of the first insulating layer 905 and the second insulating layer 906 is high. According to a lot of experiments, when the imprinting temperature is greater than or equal to 100 ℃ and less than or equal to 110 ℃, the imprinting effect is best, and the bonding strength of the first insulating layer 905 and the second insulating layer 906 is the highest.
Further, in the present embodiment, the first insulating layer 905 is immersed in hot water at 80 ℃ or higher and at 90 ℃ or lower, and the first insulating layer 905 is cooled to the imprint temperature. In other embodiments, the first insulating layer 905 is cooled to the imprint temperature by air cooling. Particularly, by hot water cooling, the cooling efficiency and the required cooling temperature can be effectively ensured.
S20, performing a stamping process on the outer surface of the first insulating layer 905 to form a first recess on the outer surface of the first insulating layer 905;
specifically, the first concave portion may be stamped by the stamping device 4 in the prior art, or the first concave portion may be stamped by the stamping device 4 provided in the fourth embodiment of the present invention.
S21: performing damage detection on the first insulating layer 905;
specifically, the damage detection is performed to detect whether the first insulating layer 905 is damaged in the imprinting process, so that the core wire and the shielding layer 903 inside are exposed, and further, safety accidents such as electric leakage and the like in the subsequent use process are avoided. In this embodiment, the presence or absence of a damage in the first insulating layer 905 is detected by an electric discharge detection method. The detection of whether the first insulating layer 905 is damaged or not by an electric spark detection method is simple and convenient, and low in cost. In other embodiments, the presence or absence of damage to the first insulating layer 905 is detected by sonar detection or infrared detection. Whether the first insulating layer 905 is damaged or not is detected through a sonar flaw detection method or an infrared detection method, the accuracy is high, no electric shock hazard exists, and the method is safe and reliable.
S30, extruding a second insulating layer 906 on the outer surface of the embossed first insulating layer 905 by a second extrusion process;
specifically, double-layer co-extrusion is the simultaneous heating and extrusion molding of two layers of materials, so that the layers are firmly and reliably combined. If different material layers are simply extruded for multiple times (the extrusion process is short), the effect of a multilayer sheath is seemingly realized on the surface, but because the extrusion process finishes one layer before the next layer, the adjacent two layers cannot be firmly and reliably connected due to the difference of the molecular structure, the material components and the like of the materials of each layer, and relative sliding and rotation are easy to occur. Therefore, a first recess, such as a spiral groove, an annular groove, a blind recess, or the like, is stamped on the outer surface of the first insulating layer 905 by a stamping process, and then the second insulating layer 906 is extruded, and a material of the second insulating layer 906 enters the first recess during a second extrusion process. After cooling, it looks like the second insulating layer 906 is provided with the first protrusion 9061 on the side close to the first insulating layer 905, and the first protrusion 9061 is embedded in the first recess. In this way, the first insulating layer 905 and the second insulating layer 906 can be firmly and reliably connected, and relative sliding and rotation are not easy to occur. Furthermore, the process only needs a common extrusion molding device with low cost, and does not need special double-layer co-extrusion equipment. Furthermore, the number of layers that can be achieved by the multilayer device is limited, and for this technical solution, by stamping a second recess on the second insulating layer 906 and then extruding a third insulating layer on the outer surface of the second insulating layer 906, a second protrusion of the third insulating layer is embedded in the second recess, and then the production of a three-layer sheath can be achieved, and so on, this technical solution can use a common extrusion molding device to produce a cable with four, five or even more layers of sheaths.
S40: and cooling the second insulating layer 906 and then taking up the wire.
Specifically, the cable is cooled and then taken up, so that the cable can be prevented from being accumulated and wound in a high-temperature state.
The technical scheme disclosed by the invention can achieve the effect of double-layer co-extrusion or multi-layer co-extrusion cables of import equipment, but only needs the existing general common equipment, and has the advantages of simple processing, low additional equipment cost, high process feasibility and simple operation.
In other embodiments, a stamping process is performed on the outer surface of the second insulating layer 906 to form a second recess on the outer surface of the second insulating layer 906; a third insulating layer is extruded on the outer surface of the embossed second insulating layer 906 by a third extrusion process, thereby obtaining a three-layer sheathed cable. By repeating the operations of embossing and extrusion, four-layer sheathed cables, five-layer sheathed cables or even more sheathed cables 9 can be produced.
Example two
As shown in fig. 2, a system for processing a multi-layer sheathed cable 9 for performing the processing provided in the first embodiment comprises an outlet machine 1, a first extruder 2, a first cooling device 3, an embossing device 4, a second extruder 6, a second cooling device 7 and a take-up device 8 in sequence from upstream to downstream.
Specifically, the first extruder 2 is used to form the first insulating layer 905, and the imprinting device 4 is used to imprint a first depression on the outer surface of the first insulating layer 905; a second extruder 6 is used to form the second insulating layer 906. The insulating material in the first extruder 2 is different from the insulating material in the second extruder 6. The different materials are complementary in performance, so that the comprehensive performance of the sheath is more excellent.
In this embodiment, the first cooling device 3 includes a first water tank, a first circulating pump and a first fan coil, and the first water tank contains 80-90 ℃ hot water. In other embodiments, the first cooling device 3 comprises a first fan. Particularly, the first water tank is arranged for water cooling, so that the cooling efficiency is high, and the temperature controllability is strong; the air cooling is simple and convenient through the first fan, and water resources are saved.
In this embodiment, a line-frequency spark device 5 is provided between the embossing device 4 and the second extruder 6. Specifically, the power frequency spark device 5 is configured to perform electric spark detection to detect whether the first insulating layer 905 is damaged.
In this embodiment, the second cooling device 7 includes a second water tank, a second circulating pump and a second fan coil, and the second water tank contains normal temperature water. In other embodiments, the second cooling device 7 comprises a second fan. Particularly, the second water tank is arranged for water cooling, so that the cooling efficiency is high, and the temperature controllability is strong; the air cooling is simple and convenient through the second fan, and water resources are saved.
Specifically, the wire takeup device 8 provides a traction force to the multi-layer sheathed cable 9 to keep the multi-layer sheathed cable 9 moving from upstream to downstream.
In other embodiments, a third extruder is arranged between the second extruder 6 and the take-up device 8, and a further embossing device 4 is arranged between the second extruder 6 and the third extruder, so that the production of a three-layer sheathed cable can be achieved. By analogy, the production of four-layer, five-layer or even more-layer sheathed cables 9 can be realized.
EXAMPLE III
As shown in fig. 3, a multi-layer sheathed cable 9 produced by the processing method described in the first embodiment and the processing system described in the second embodiment sequentially comprises an insulating core 901, a wrapping tape 902, a shielding layer 903, a metal mesh grid 904 and a sheath from inside to outside.
The sheath comprises a first insulating layer 905 and a second insulating layer 906 covering the first insulating layer 905; one side of the first insulating layer 905 close to the second insulating layer 906 is provided with a first recessed portion, one side of the second insulating layer 906 close to the first insulating layer 905 is provided with a first protruding portion 9061, and the first protruding portion 9061 is embedded into the first recessed portion. Specifically, the first protrusion 9061 is embedded in the first recess, so that the first insulating layer 905 and the second insulating layer 906 are not easy to move relatively, and the connection is firm and reliable.
In this embodiment, the first recess includes a plurality of spiral grooves, and the axes of the spiral grooves and the axis of the first insulating layer 905 are aligned. In other embodiments, the first recess may further include an annular groove, a blind recess, and the like. In particular, the helical groove extends along a helix, the axis of which is the axis of the helical groove.
In other embodiments, a third insulating layer is further included, the third insulating layer covers the second insulating layer 906; a second concave portion is arranged on one side, close to the third insulating layer, of the second insulating layer 906, a second protruding portion is arranged on one side, close to the second insulating layer 906, of the third insulating layer, and the second protruding portion is embedded into the second concave portion. In particular, a secure connection of the three-layer sheathed cable can thus be achieved. By analogy, the firm and reliable connection of four-layer, five-layer or even more-layer sheathed cables 9 can be realized.
Example four
As shown in fig. 4, an embossing apparatus 4 for producing the multi-layer sheathed cable 9 of the third embodiment includes a first embossing mechanism 401, a second embossing mechanism 402, a third embossing mechanism 403, and a fourth embossing mechanism 404; the first pressing mechanism 401 is disposed opposite to the third pressing mechanism 403, and the second pressing mechanism 402 is disposed opposite to the fourth pressing mechanism 404.
A first pressing roller 4011 is arranged at one end, close to the third pressing mechanism 403, of the first pressing mechanism 401, a first arc-shaped groove is formed in the circumferential direction of the first pressing roller 4011, and first embossing is arranged on the first arc-shaped groove; a second pressing roller is arranged at one end, close to the fourth pressing mechanism 404, of the second pressing mechanism 402, a second arc-shaped groove is formed in the circumferential direction of the second pressing roller, and a second embossing is arranged on the second arc-shaped groove; a third pressing roller is arranged at one end, close to the first pressing mechanism 401, of the third pressing mechanism 403, a third arc-shaped groove is formed in the circumferential direction of the third pressing roller, and third embossing is arranged on the third arc-shaped groove; a fourth pressing roller is arranged at one end, close to the second pressing mechanism 402, of the fourth pressing mechanism 404, a fourth arc-shaped groove is formed in the circumferential direction of the fourth pressing roller, and a fourth embossing is arranged on the fourth arc-shaped groove; the first arc-shaped groove, the second arc-shaped groove, the third arc-shaped groove and the fourth arc-shaped groove are identical in shape and size.
Specifically, when the first insulating layer 905 passes through the imprint apparatus 4: the upper arc surface of the first insulating layer 905 is embedded into the first arc groove, and when the first press roller 4011 rotates, the first embossing leaves a first upper concave part on the upper arc surface of the first insulating layer 905; the left arc surface of the first insulating layer 905 is embedded into the second arc-shaped groove, and a first left concave part is left on the left arc surface of the first insulating layer 905 by the second embossing when the second pressing roller rotates; the lower arc surface of the first insulating layer 905 is embedded into the third arc-shaped groove, and a first lower concave part is left on the lower arc surface of the first insulating layer 905 by the third embossing when the third pressing roller rotates; the right arc surface of the first insulating layer 905 is embedded into the fourth arc-shaped groove, and a first right concave portion is left on the right arc surface of the first insulating layer 905 by the fourth embossing when the fourth pressing roller rotates. The first recess includes the first upper recess, the first left recess, the first lower recess and the first right recess. Specifically, the first embossing, the second embossing, the third embossing and the fourth embossing may be regularly arranged twill (as shown in fig. 6), bump (as shown in fig. 7), texture (as shown in fig. 8), or the like.
In this embodiment, the axis of the first press roll 4011, the axis of the second press roll, the axis of the third press roll, and the axis of the fourth press roll are in the same plane. In other embodiments, the axis of the first press roll 4011 and the axis of the third press roll are in the same plane, and the axis of the second press roll and the axis of the fourth press roll are in the other plane. Specifically, the first upper recess, the first left recess, the first lower recess, and the first right recess may be simultaneously embossed. The first upper concave part and the first lower concave part can be stamped first, and then the first left concave part and the first right concave part can be stamped. The first left concave part and the first right concave part can be stamped first, and then the first upper concave part and the first lower concave part can be stamped.
In this embodiment, the imprinting apparatus 4 further includes a fixed frame, the first imprinting mechanism 401 and the third imprinting mechanism 403 are vertically disposed, and the first imprinting mechanism 401 is located above the third imprinting mechanism 403; the second stamping mechanism 402 and the fourth stamping mechanism 404 are horizontally arranged, and the second stamping mechanism 402 and the fourth stamping mechanism 404 are respectively positioned at two sides of the first stamping mechanism 401 and the third stamping mechanism 403. The fixed frame comprises an upper cross beam 405 and a lower cross beam 407, wherein one end of the upper cross beam 405 is connected with one end of the lower cross beam 407 through a left vertical plate 406; the other end of the upper cross beam 405 is connected with the other end of the lower cross beam 407 through a right vertical plate 408; an upper mounting groove is formed in the middle of the upper cross beam 405, a lower mounting groove is formed in the middle of the lower cross beam 407, a left mounting groove is formed in the middle of the left vertical plate 406, and a right mounting groove is formed in the middle of the right vertical plate 408; one end of the first stamping mechanism 401, which is far away from the third stamping mechanism 403, is inserted into the upper mounting groove, one end of the second stamping mechanism 402, which is far away from the fourth stamping mechanism 404, is inserted into the left mounting groove, one end of the third stamping mechanism 403, which is far away from the first stamping mechanism 401, is inserted into the lower mounting groove, and one end of the fourth stamping mechanism 404, which is far away from the second stamping mechanism 402, is inserted into the right mounting groove.
The first adjusting bolt penetrates through the bottom of the upper mounting groove from one side, far away from the lower cross beam 407, of the upper cross beam 405 and extends into the upper mounting groove; the second adjusting bolt penetrates through the bottom of the left mounting groove from the side, away from the right vertical plate 408, of the left vertical plate 406 and extends into the left mounting groove; the third adjusting bolt penetrates through the bottom of the lower mounting groove from one side of the lower cross beam 407, which is far away from the upper cross beam 405, and extends into the lower mounting groove; the four adjusting bolts penetrate through the bottom of the right mounting groove from the side, far away from the left vertical plate 406, of the right vertical plate 408 and extend into the right mounting groove. When imprinting is carried out, one end of the first adjusting bolt close to the lower cross beam 407 is in contact with the first imprinting mechanism 401; one end of the second adjusting bolt close to the right vertical plate 408 is in contact with the second imprinting mechanism 402; one end of the third adjusting bolt close to the upper cross beam 405 is in contact with the third imprinting mechanism 403; one end of the fourth adjusting bolt close to the left vertical plate 406 is in contact with the fourth coining mechanism 404. Specifically, the depth of the first depressed portion can be adjusted by adjusting the distances between the first, second, third, and fourth imprint mechanisms 401, 402, 403, and 404 by screwing the first, second, third, and fourth adjustment bolts.
In this embodiment, the stamping device 4 further includes a first clamping plate 409, a second clamping plate 410, a third clamping plate 411 and a fourth clamping plate 412. The first stamping mechanism 401 is located between the first clamping plate 409 and the upper cross beam 405, and the first clamping plate 409 is connected with the upper cross beam 405 through a fixing bolt; the second stamping mechanism 402 is located between the second clamping plate 410 and the left vertical plate 406, and the second clamping plate 410 is connected with the left vertical plate 406 through a fixing bolt; the third stamping mechanism 403 is located between the third clamping plate 411 and the lower cross beam 407, and the third clamping plate 411 is connected with the lower cross beam 407 through a fixing bolt; the fourth stamping mechanism 404 is located between the fourth clamping plate 412 and the right vertical plate 408, and the fourth clamping plate 412 is connected with the right vertical plate 408 through a fixing bolt. Specifically, the first clamp plate 409, the second clamp plate 410, the third clamp plate 411, and the fourth clamp plate 412 may fix the first imprint mechanism 401, the second imprint mechanism 402, the third imprint mechanism 403, and the fourth imprint mechanism 404, respectively.
In this embodiment, the first pressing roller 4011 and the first pressing mechanism 401 can be detachably connected, the second pressing roller and the second pressing mechanism 402 can be detachably connected, the third pressing roller and the third pressing mechanism 403 can be detachably connected, and the fourth pressing roller and the fourth pressing mechanism 404 can be detachably connected. In particular, the design of the detachable connection allows the press rollers of different embossings to be replaced. Specifically, the first embossing mechanism 401 is provided with a first bearing hole and a second bearing hole, and the bearing sequentially penetrates through the first bearing hole, the first press roll 4011, and the second bearing hole. The bearing is in interference fit with the first bearing hole, and the bearing is in interference fit with the second bearing hole.
In this embodiment, the first embossing mechanism 401 includes a first platen 4011, the second embossing mechanism 402 includes a second platen, the third embossing mechanism 403 includes a third platen, and the fourth embossing mechanism 404 includes a fourth platen. In other embodiments, as shown in fig. 5, the first embossing mechanism 401 includes two first rollers 4011, the second embossing mechanism 402 includes two second rollers, the third embossing mechanism 403 includes two third rollers, and the fourth embossing mechanism 404 includes two fourth rollers.
The terms "first," "second," "third," "fourth," and the like herein are used for descriptive purposes only and are not intended to have any special meaning.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A processing technology of a multi-layer sheath cable is characterized by comprising the following steps:
extruding a first insulating layer through a first extrusion process;
carrying out an imprinting process on the outer surface of the first insulating layer to form a first sunken part on the outer surface of the first insulating layer;
and extruding a second insulating layer on the outer surface of the embossed first insulating layer through a second extrusion molding process.
2. The process for manufacturing a multi-layer sheathed cable according to claim 1, further comprising, before the embossing process on the outer surface of the first insulating layer:
cooling the temperature of the first insulating layer to a imprint temperature, the imprint temperature being greater than or equal to 90 ℃ and less than or equal to 120 ℃.
3. Process for manufacturing a multilayer sheathed cable according to claim 2, wherein the cooling of the temperature of the first insulating layer to the embossing temperature is in particular:
immersing the first insulating layer in hot water at 80 ℃ or more and at 90 ℃ or less, and cooling the first insulating layer to the imprint temperature.
4. The process for manufacturing a multi-layer sheathed cable according to claim 1, further comprising, between the embossing process and the second extrusion process:
and detecting the damage of the first insulating layer.
5. The process for manufacturing a multi-layer sheathed cable according to claim 4, wherein the detecting of the breakage of the first insulating layer comprises:
and detecting whether the first insulating layer is damaged or not by an electric spark detection method.
6. A processing system for a multilayer sheathed cable, characterized by comprising a first extruder, an embossing device and a second extruder in this order from upstream of the processing system for the multilayer sheathed cable to downstream of the processing system for the multilayer sheathed cable.
7. The system for processing a multi-layer jacketed cable according to claim 6,
a first cooling device is arranged between the first plastic extruding machine and the imprinting device;
the first cooling device comprises a first water tank;
or,
the first cooling device includes a first fan.
8. The system for processing a multi-layer jacketed cable according to claim 6,
and a power frequency spark device is arranged between the imprinting device and the second plastic extruding machine.
9. The system for processing a multi-layer jacketed cable according to claim 6,
the wire winding device is also included;
the take-up device is located downstream of the second extruder.
10. The system of claim 9, wherein a second cooling device is disposed between the second extruder and the take-up apparatus;
the second cooling device comprises a second water tank;
or,
the second cooling device includes a second fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486969.8A CN107331473A (en) | 2017-06-23 | 2017-06-23 | The processing technology and system of processing of multisheath cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486969.8A CN107331473A (en) | 2017-06-23 | 2017-06-23 | The processing technology and system of processing of multisheath cable |
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| Publication Number | Publication Date |
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| CN107331473A true CN107331473A (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710486969.8A Pending CN107331473A (en) | 2017-06-23 | 2017-06-23 | The processing technology and system of processing of multisheath cable |
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| CN (1) | CN107331473A (en) |
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| CN112820481A (en) * | 2021-04-19 | 2021-05-18 | 中航富士达科技股份有限公司 | Metal sheath embossing device for corrugated outer conductor cable |
| CN113161075A (en) * | 2021-02-24 | 2021-07-23 | 广东诠杰科技有限公司 | Cable sheath forming process and forming equipment |
| CN114407319A (en) * | 2021-12-03 | 2022-04-29 | 飞达科技有限公司 | Extrusion processing method of rubber and silica gel double-layer sheath wire |
| CN117612807A (en) * | 2023-11-30 | 2024-02-27 | 江苏帝一集团有限公司 | Cold-resistant sealed waterproof data cable apparatus for producing |
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| US2583026A (en) * | 1949-08-12 | 1952-01-22 | Simplex Wire & Cable Co | Cable with interlocked insulating layers |
| CN102969051A (en) * | 2011-08-29 | 2013-03-13 | 日立电线株式会社 | Coated wire and method of manufacturing the same |
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| CN114407319A (en) * | 2021-12-03 | 2022-04-29 | 飞达科技有限公司 | Extrusion processing method of rubber and silica gel double-layer sheath wire |
| CN114407319B (en) * | 2021-12-03 | 2024-04-19 | 飞达科技有限公司 | Extrusion processing method for rubber and silica gel double-layer sheath wire |
| CN117612807A (en) * | 2023-11-30 | 2024-02-27 | 江苏帝一集团有限公司 | Cold-resistant sealed waterproof data cable apparatus for producing |
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