CN112382445A - Metal band longitudinal wrapping production method for cable - Google Patents
Metal band longitudinal wrapping production method for cable Download PDFInfo
- Publication number
- CN112382445A CN112382445A CN202011173210.2A CN202011173210A CN112382445A CN 112382445 A CN112382445 A CN 112382445A CN 202011173210 A CN202011173210 A CN 202011173210A CN 112382445 A CN112382445 A CN 112382445A
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- China
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- aluminum
- plastic composite
- die
- composite belt
- heating
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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
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
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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
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
- H01B13/2686—Pretreatment
Abstract
The invention discloses a method for producing a metal longitudinal wrapping cable in the field of longitudinal wrapping of cables, which can ensure that the produced cable longitudinal wrapping structure is stable and reliable, metal strips cannot deviate in the longitudinal wrapping process, and no lotus leaf edges exist in the seaming after the longitudinal wrapping by shaping and conveying a longitudinal wrapping belt, adopting double bending and shaping, combining double heat treatment and finally performing roll forming. The invention can solve the problems that the metal band longitudinal wrapping of the cable in the prior art is easy to cause the deviation of the band material and the lotus leaf edge defect of the joint.
Description
Technical Field
The invention relates to the field of longitudinal wrapping of cables, in particular to a metal band longitudinal wrapping production method for cables.
Background
In the production process of the cable, the outer side of the conductor is a plurality of coaxial laminated structures, which conventionally comprise insulating layers, shielding layers and the like, wherein part of the laminated structures are formed by extrusion, but the laminated structures are formed by longitudinal wrapping for metal strips and the like. In the prior art, a common metal longitudinal wrapping belt is provided with an aluminum-plastic composite belt, an aluminum belt, a copper belt, a stainless steel belt, a steel belt and the like, the metal belt is initially wound by a coil iron plate in the longitudinal wrapping process, and is shaped by two dies to longitudinally wrap the outer side of a cable core, but the metal belt is unstable in positioning in the longitudinal wrapping process, the metal belt is easy to deviate, and the seam joint part after longitudinal wrapping is easy to have the defects of a lotus leaf edge and the like, so that the structure of a cable longitudinal wrapping layer is unstable.
Disclosure of Invention
The invention aims to provide a method for producing a longitudinal cable metal strap package, which aims to solve the problems that in the prior art, the longitudinal cable metal strap package is easy to cause belt material deviation and hinge edge defects.
In order to achieve the purpose, the basic technical scheme of the invention is as follows: a method for producing a longitudinal cable metal tape wrap comprises the following steps:
A. synchronously conveying the aluminum-plastic composite belt and the cable core by using a shaping roller set, and leveling the aluminum-plastic composite belt;
B. double rolling the aluminum-plastic composite belt by using a primary pressing mechanism and a secondary pressing mechanism;
C. feeding the rolled aluminum-plastic composite tape and the cable core into a horn die, and coating the rolled aluminum-plastic composite tape on the surface of the cable core by using the horn die;
D. further wrapping and shaping the cable core preliminarily coated with the aluminum-plastic composite belt by using the horn die by using a forming die;
E. further wrapping and shaping the cable core coated with the aluminum-plastic composite tape and processed by the forming die by using a sizing die;
F. and (5) carrying out joint closing, rolling and shaping on the aluminum-plastic composite belt subjected to sizing die treatment by using a pressing wheel.
The principle and the advantages of the scheme are as follows: in practical application, when the aluminum-plastic composite belt enters the longitudinal wrapping device, the shaping roller set is used for leveling and pre-tensioning, so that the aluminum-plastic composite belt keeps certain tension in the longitudinal wrapping process, two side edges are kept for synchronous conveying, deviation is prevented, the aluminum-plastic composite belt is bent through double rolling, the bending degree of the longitudinal wrapping of the aluminum-plastic composite belt is improved, meanwhile, the conveying of the aluminum-plastic composite belt with certain length is guided through twice rolling, and the aluminum-plastic composite belt is prevented from deviation. The two side edges of the double-rolled aluminum-plastic composite belt are bent towards the middle part, and then the aluminum-plastic composite belt can be primarily coated on the outer side of the cable core through a horn die to form overlapped edges of the joint. And finally, rolling the joint overlapping part of the aluminum-plastic composite tape by using a pressing wheel, so as to ensure that the joint part is smooth and neat and no lotus leaf edge is formed. By adopting the method, the aluminum-plastic composite belt is effectively and tightly wrapped on the surface of the cable core, the aluminum-plastic composite belt is stably conveyed and cannot deviate in the longitudinal wrapping process, the problems of lotus leaf edges and untight joint cannot occur after longitudinal wrapping, and the longitudinal wrapping quality is effectively improved.
And further, the shaping roller set in the step A comprises a pair of vertical guide wheels and four flat guide wheels, the aluminum-plastic composite belt is conveyed between the vertical guide wheels which are arranged side by side, and two side edges of the aluminum-plastic composite belt are synchronously conveyed through the vertical guide wheels. Preferably, the positioning and synchronous conveying can be carried out on two sides of the aluminum-plastic composite belt at the beginning of longitudinal wrapping, and the aluminum-plastic composite belt is prevented from deviating from the input end.
And further, after passing through the vertical guide wheel, the aluminum-plastic composite belt is leveled by four flat guide wheels in the step A. The aluminum-plastic composite belt leveled by the four leveling guide wheels is preferably conveyed flatly and has certain tension, is less prone to deviation in the conveying and longitudinal wrapping processes, and can be tightly attached to the cable core.
And further, the primary pressing mechanism in the step B comprises a primary pressing cam and a primary pressing concave wheel, and the aluminum-plastic composite belt is conveyed by the primary pressing cam and the primary pressing concave wheel in a rolling mode. The rolling conveying is preferably adopted, and the pressing is carried out while the conveying is carried out, so that the traction friction of the pressing on the aluminum-plastic composite belt is reduced, and the risk of fracture of the aluminum-plastic composite belt is reduced.
And step B, the repressing mechanism comprises a repressing cam and a repressing concave wheel, the length of the repressing cam is smaller than that of the primary pressing cam, the length of the repressing concave wheel is smaller than that of the primary pressing concave wheel, and the aluminum-plastic composite belt rolled by the primary pressing mechanism is further rolled and conveyed by the repressing cam and the repressing concave wheel. The progressive rolling forming is preferably formed, so that the risk of fracture is effectively reduced, the single curling amount of the aluminum-plastic composite belt is reduced, and longitudinal cracks are avoided.
Further, in step C, D, E, the horn die, the forming die and the sizing die are fixed by a die holder, a loading hole which penetrates through the die holder in the transverse direction is processed on the die holder, a fastening screw hole which penetrates through the die holder in the vertical direction is formed in the top of the loading hole, and a fastening bolt is connected in the fastening screw hole. The die holder is higher in universality and simple in assembly operation of the die, and flexible adjustment of the die is facilitated.
Further, the inner diameter of the forming die is smaller than that of the horn die, and the inner diameter of the sizing die is smaller than that of the forming die. Preferably, the longitudinal wrapping tightness of the aluminum-plastic composite belt can be gradually increased in the conveying process, so that the tearing risk of the aluminum-plastic composite belt is reduced while effective wrapping is ensured.
And further, heating and connecting the joint of the aluminum-plastic composite belt by using a thermal bonding mechanism after the step C and the step D. Preferably, the covering tightness of the aluminum-plastic composite belt is effectively improved by adopting a twice heating mode, the bonding area of the joint overlapping part is increased, and the joint stability is improved.
Further, hot bonding mechanism includes spray gun frame and the spray gun of assembly on the spray gun frame, and the spray gun frame includes the stand, and the stand outside is equipped with the clamp plate, and the clamp plate bottom is rotated with the stand to be connected, and the clamp plate top is rotated and is connected with the screw rod, and the stand top is equipped with the draw-in groove of inlay card screw rod, and the spray gun supports through the clamp plate to press on the stand, heats the joint close department of aluminium-plastic composite strip with the spray gun. The spray gun is stably clamped on the stand column through the pressing plate as an optimal mode, and a large vertical adjusting range is provided, so that the spray gun can be adjusted at a more flexible angle, the stable state can be kept in the longitudinal packing process, manual operation is not needed, and the labor cost is saved.
Further, the hot bonding mechanism includes the heating pipe with the coaxial setting of moulded die, and the heating pipe inner wall is equipped with the cross sectional shape and is fan-shaped heating chamber, heats the intracavity and is equipped with the electric heating net, heats the chamber outside and is equipped with heating channel and samming passageway, and heating channel parallel arrangement is in heating chamber outside, and samming passageway and heating chamber isodiametric, heating channel one end are connected with intake pipe, the other end and samming passageway intercommunication, and the samming passageway other end communicates with the heating pipe is outside. Preferably, the coaxial arrangement is adopted, so that the cable core longitudinally wrapped with the metal strip can smoothly pass through the heating pipe, the fan-shaped heating cavity is adopted to pertinently carry out hot melting connection on the joint part of the metal strip, the joint is ensured to be stable and reliable through twice heating connection, the heating channel is ventilated, the heat of the heating cavity is utilized from the outer side, and then hot air is filled into the temperature equalizing channel to carry out circumferential uniform heating on the metal strip, so that the metal strip is better wrapped on the cable core.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic view showing the operation of the preliminary pressing mechanism in embodiment 1 of the present invention;
FIG. 3 is a schematic view of the operation of the pressure recovery mechanism in embodiment 1 of the present invention;
FIG. 4 is a front view of the die holder in embodiment 1 of the present invention;
FIG. 5 is a front view of the bonding mechanism in embodiment 1 of the present invention;
FIG. 6 is a schematic structural view of example 2 of the present invention;
fig. 7 is a sectional view of the bonding mechanism in embodiment 2 of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a frame 1, a vertical guide wheel 2, a flat guide wheel 3, a primary pressing mechanism 4, a primary pressing cam 41, a primary pressing concave wheel 42, a cable groove 43, a re-pressing mechanism 5, a re-pressing cam 51, a re-pressing concave wheel 52, a horn die 6, a bonding mechanism 7, an upright post 71, a pressing plate 72, a spray gun 73, a screw 74, a forming die mechanism 8, a sizing die mechanism 9, a pressing wheel 10, a cable core 11, an aluminum-plastic composite tape 12, a die holder 13, a loading hole 131, a fastening screw hole 132, a heating pipe 14, a heating cavity 141, an electric heating net 142, a heating channel 143, a temperature equalizing channel 144 and a necking 145.
Embodiment 1, a method for producing a longitudinal wrapping of cable metal strips, comprising the steps of:
A. synchronously conveying the aluminum-plastic composite tape 12 and the cable core 11 by using a shaping roller set, wherein the shaping roller set comprises a pair of vertical guide wheels 2 and four flat guide wheels 3 which are arranged on a rack 1, as shown in figure 1, the aluminum-plastic composite tape 12 is conveyed between the vertical guide wheels 2 which are arranged side by side, the two side edges of the aluminum-plastic composite tape 12 are synchronously conveyed by the vertical guide wheels 2, the aluminum-plastic composite tape 12 is leveled by the four flat guide wheels 3, the four flat guide wheels 3 are alternately arranged in a high-low mode, and the conveying speed is 0-50 m/min;
B. the aluminum-plastic composite belt 12 is double-rolled by a primary pressing mechanism 4 and a secondary pressing mechanism 5, as shown in a combined drawing 2, the primary pressing mechanism 4 comprises a primary pressing cam 41 and a primary pressing concave wheel 42, the aluminum-plastic composite belt 12 is rolled and conveyed by the primary pressing cam 41 and the primary pressing concave wheel 42, as shown in a combined drawing 3, the secondary pressing mechanism 5 comprises a secondary pressing cam 51 and a secondary pressing concave wheel 52, the length of the secondary pressing cam 51 is smaller than that of the primary pressing cam 41, the length of the secondary pressing concave wheel 52 is smaller than that of the primary pressing concave wheel 42, the aluminum-plastic composite belt 12 after being rolled by the primary pressing mechanism 4 is further rolled and conveyed by the secondary pressing cam 51 and the secondary pressing concave wheel 52, and cable grooves 43 are arranged in the middle parts of the primary pressing cam 41 and the secondary pressing cam 51 to synchronously convey the cable cores 11;
C. feeding the rolled aluminum-plastic composite tape 12 and the cable core 11 into a horn die 6, coating the rolled aluminum-plastic composite tape 12 on the surface of the cable core 11 by using the horn die 6, and heating the joint overlapping part of the aluminum-plastic composite tape 12 by using a thermal bonding mechanism 7 to promote the plastic bonding of the surface;
D. further wrapping and shaping the cable core 11 which is preliminarily wrapped with the aluminum-plastic composite tape 12 by the horn die 6 by using a forming die 8, and heating the joint overlapping part of the aluminum-plastic composite tape 12 by using a hot bonding mechanism 7 to promote the further bonding of the plastic on the surface;
E. further wrapping and shaping the cable core 11 coated with the aluminum-plastic composite tape 12 and processed by the forming die 8 by using a sizing die 9;
F. and (3) carrying out seam rolling and shaping on the aluminum-plastic composite belt 12 subjected to the sizing die 9 treatment by using a pressing wheel 10.
In step C, D, E, the horn die 6, the forming die 8 and the sizing die 9 are fixed by the die holder 13, and as shown in fig. 4, a loading hole 131 penetrating transversely is formed in the die holder 13, a fastening screw hole 132 penetrating vertically is formed in the top of the loading hole 131, a fastening bolt is connected in the fastening screw hole 132, the inner diameter of the forming die 8 is smaller than that of the horn die 6, and the inner diameter of the sizing die 9 is smaller than that of the forming die 8.
The thermal bonding mechanism 7 comprises a spray gun 73 frame and a spray gun 73 assembled on the spray gun 73 frame, as shown in fig. 5, the spray gun 73 frame comprises a column 71, a pressing plate 72 is arranged on the outer side of the column 71, the bottom end of the pressing plate 72 is rotatably connected with the column 71, the top end of the pressing plate 72 is rotatably connected with a screw 74, the top end of the column 71 is provided with a clamping groove for clamping and embedding the screw 74, the spray gun 73 is pressed on the column 71 through the pressing plate 72, the joint of the aluminum-plastic composite belt 12 is heated by the spray gun 73, and the heating temperature is 150-300.
The feeding end of the aluminum-plastic composite belt 12 is limited and synchronously conveyed by the vertical guide wheel 2 in the longitudinal wrapping process, stable conveying is kept, deviation cannot be caused, and deviation is avoided by the re-pressing cam 51 once again after bending is finished through twice rolling in the rolling process. After the initial longitudinal wrapping of the horn mould 6, the butt seam is heated by the spray gun 73, so that the surface layer plastics of the overlapped part are hot-melted, the initial shaping is carried out, and the resistance of the overlapped part is reduced. Then further rolling is carried out through the forming die 8, the plastic at the overlapped part is more easily rolled after being heated, so that the area of the overlapped part is increased, and the plastic at the overlapped part is connected in a welding mode in the process. And then, the seam-closing part is heated again, the area of the plastic hot melt is increased, the sizing die 9 is used for winding once to reach the preset diameter, the plastic at the overlapped part is stably bonded together after hot melt, and the seam-closing part is ensured to be stably and reliably connected. And finally, rolling the overlapped part of the butt seam by using a pressing wheel 10 to ensure that the butt seam part is stably bonded, pressing the part with uneven butt seam, and ensuring that the butt seam part is smooth, tidy and free of lotus leaf edges after longitudinal wrapping.
In the thermal bonding process, the seam part is heated at a fixed point by the electric heating net 142 in the heating cavity 141, and the central angle of the heating cavity 141 is 90-110 degrees, so that the seam overlapping part can be effectively covered. Then through the gas that lets in to heating channel 143, utilize the heat that heating chamber 141 deviates from cable core 11 one side to gas heating, then let in annular samming passageway 144 with gas, heat the compound area 12 of cladding on cable core 11 surface from the circumference is whole, make the whole more soft of compound area 12 of aluminium-plastic through the temperature that is slightly less than the seam part, the plastic layer on surface possesses better adhesion, can closely laminate on cable core 11 surface behind moulded die 8, sizing die 9. And the plastic with higher temperature at the joint closing part can be quickly hot-melted and bonded, so that the joint closing is stable and reliable.
The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A production method of a longitudinal wrapping of cable metal strips is characterized by comprising the following steps: the method comprises the following steps:
A. synchronously conveying the aluminum-plastic composite belt and the cable core by using a shaping roller set, and leveling the aluminum-plastic composite belt;
B. double rolling the aluminum-plastic composite belt by using a primary pressing mechanism and a secondary pressing mechanism;
C. feeding the rolled aluminum-plastic composite tape and the cable core into a horn die, and coating the rolled aluminum-plastic composite tape on the surface of the cable core by using the horn die;
D. further wrapping and shaping the cable core preliminarily coated with the aluminum-plastic composite belt by using the horn die by using a forming die;
E. further wrapping and shaping the cable core coated with the aluminum-plastic composite tape and processed by the forming die by using a sizing die;
F. and (5) carrying out joint closing, rolling and shaping on the aluminum-plastic composite belt subjected to sizing die treatment by using a pressing wheel.
2. A method for producing a metallic tape longitudinal wrapping for cables according to claim 1, characterized in that: and the shaping roller set in the step A comprises a pair of vertical guide wheels and four flat guide wheels, the aluminum-plastic composite belt is conveyed between the vertical guide wheels which are arranged side by side, and two side edges of the aluminum-plastic composite belt are synchronously conveyed through the vertical guide wheels.
3. A method for producing a metallic tape longitudinal wrapping for cables according to claim 2, characterized in that: and B, leveling the aluminum-plastic composite belt in the step A by using four flat guide wheels after the aluminum-plastic composite belt passes through the vertical guide wheels.
4. A method for producing a metallic tape longitudinal wrapping for cables according to claim 3, characterized in that: and the primary pressing mechanism in the step B comprises a primary pressing cam and a primary pressing concave wheel, and the aluminum-plastic composite belt is conveyed by the primary pressing cam and the primary pressing concave wheel in a rolling way.
5. A method for producing metallic tape longitudinal wraps for cables as claimed in claim 4, wherein: and the repressing mechanism in the step B comprises a repressing cam and a repressing concave wheel, the length of the repressing cam is smaller than that of the primary pressing cam, the length of the repressing concave wheel is smaller than that of the primary pressing concave wheel, and the aluminum-plastic composite belt rolled by the primarily pressing mechanism is further rolled and conveyed by the repressing cam and the repressing concave wheel.
6. A method for producing metallic tape longitudinal wraps for cables as claimed in claim 5, wherein: in the step C, D, E, the horn die, the forming die and the sizing die are fixed by the die holder, a loading hole which penetrates through the die holder in the transverse direction is processed on the die holder, a fastening screw hole which penetrates through the die holder in the vertical direction is formed in the top of the loading hole, and a fastening bolt is connected in the fastening screw hole.
7. A method for producing metallic tape longitudinal wraps for cables as claimed in claim 6, wherein: the inner diameter of the forming die is smaller than that of the horn die, and the inner diameter of the sizing die is smaller than that of the forming die.
8. The method for producing metallic tape longitudinal wraps for cables of claim 7, wherein: and C, heating and connecting the joint of the aluminum-plastic composite belt by using a thermal bonding mechanism after the step C and the step D.
9. A method for producing a metallic tape longitudinal wrapping for cables according to claim 8, characterized in that: the hot bonding mechanism comprises a spray gun frame and a spray gun assembled on the spray gun frame, the spray gun frame comprises a stand column, a pressing plate is arranged on the outer side of the stand column, the bottom end of the pressing plate is rotatably connected with the stand column, the top end of the pressing plate is rotatably connected with a screw rod, a clamping groove for clamping and embedding the screw rod is formed in the top end of the stand column, the spray gun is supported and pressed on the stand column through the pressing plate, and the joint of the aluminum-plastic composite belt is heated through.
10. A method for producing a metallic tape longitudinal wrapping for cables according to claim 8, characterized in that: the hot bonding mechanism includes the heating pipe with the coaxial setting of moulded die, and the heating pipe inner wall is equipped with the cross sectional shape and is fan-shaped heating chamber, heats the intracavity and is equipped with electric heating net, heats the chamber outside and is equipped with heating channel and samming passageway, and heating channel parallel arrangement is in heating chamber outside, and samming passageway and heating chamber etc. footpath, heating channel one end are connected with intake pipe, the other end and samming passageway intercommunication, and the samming passageway other end and the outside intercommunication of heating pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011173210.2A CN112382445B (en) | 2020-10-28 | 2020-10-28 | Metal band longitudinal wrapping production method for cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011173210.2A CN112382445B (en) | 2020-10-28 | 2020-10-28 | Metal band longitudinal wrapping production method for cable |
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| CN112382445A true CN112382445A (en) | 2021-02-19 |
| CN112382445B CN112382445B (en) | 2022-04-22 |
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Cited By (3)
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| CN113450968A (en) * | 2021-06-25 | 2021-09-28 | 安徽百商百德电缆有限公司 | Processing equipment and processing method for high-efficiency tensile and torsion-resistant wind energy cable |
| CN115384021A (en) * | 2022-10-11 | 2022-11-25 | 江苏亨通高压海缆有限公司 | Multi-degree-of-freedom pressure adjustment longitudinal wrapping pinch roller device |
| CN117095878A (en) * | 2023-10-16 | 2023-11-21 | 江苏亨通高压海缆有限公司 | PP insulating submarine cable and cable production equipment |
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| CN117095878A (en) * | 2023-10-16 | 2023-11-21 | 江苏亨通高压海缆有限公司 | PP insulating submarine cable and cable production equipment |
| CN117095878B (en) * | 2023-10-16 | 2023-12-29 | 江苏亨通高压海缆有限公司 | PP insulating submarine cable and cable production equipment |
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|---|---|
| CN112382445B (en) | 2022-04-22 |
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