CN109300623B - Preparation method of all-aluminum alloy stranded wire - Google Patents
Preparation method of all-aluminum alloy stranded wire Download PDFInfo
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- CN109300623B CN109300623B CN201811265040.3A CN201811265040A CN109300623B CN 109300623 B CN109300623 B CN 109300623B CN 201811265040 A CN201811265040 A CN 201811265040A CN 109300623 B CN109300623 B CN 109300623B
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- molded line
- monofilament
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- aluminum alloy
- wire
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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
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
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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
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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
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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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
- H01B13/02—Stranding-up
- H01B13/0235—Stranding-up by a twisting device situated between a pay-off device and a take-up device
- H01B13/0257—Stranding-up by a twisting device situated between a pay-off device and a take-up device being a perforated disc
Abstract
The invention relates to a preparation method of an all-aluminum alloy stranded wire, which comprises the following steps: drawing a molded line monofilament; then carrying out heat treatment; then twisting the molded line monofilament; in the step of drawing the molded line monofilament, the elongation coefficient of a wire drawing outlet die is the theoretical elongation coefficient minus 0.01-0.09; the flat cable parameter is-5 to-40. According to the preparation method of the all-aluminum alloy stranded wire, the elongation coefficient of the wire drawing outlet die is adjusted, so that the aluminum material is filled in the die gap, and the obtained molded wire monofilament is regular in shape, smooth and free of oil; furthermore, the molded line monofilament has regular shape and small deviation with the designed shape, so that the subsequent molded line monofilament can be smoothly twisted. Meanwhile, the winding displacement parameters are adjusted in advance, so that the winding displacement speed and the winding speed are balanced, and the smooth winding of the molded line monofilament is ensured without wire jumping and turning over.
Description
Technical Field
The invention relates to the technical field of power transmission, in particular to a preparation method of an all-aluminum alloy stranded wire.
Background
The traditional all-aluminum alloy stranded wire is formed by stranding a plurality of round single wires. The outer surface of the all-aluminum alloy stranded wire is not flat and smooth, but grooves are formed between the outer ring monofilaments, so that the overall outer diameter of the wire is larger under the condition of the same section, and the wind resistance is larger due to the addition of the grooves on the surface of the wire. Thus, a wire with a smooth outer surface is produced, and the outer ring monofilament is a molded monofilament.
However, the problems of turning over of the molded line monofilament, oil carrying and the like easily occur in the twisting process of the conventional molded line monofilament.
Disclosure of Invention
Based on this, there is a need for a new method for preparing an all-aluminum alloy stranded wire.
A preparation method of an all-aluminum alloy stranded wire comprises the following steps:
drawing a molded line monofilament;
carrying out heat treatment on the molded line monofilament;
and stranding the molded line monofilament after the heat treatment;
in the step of drawing the molded line monofilament, the elongation coefficient of a wire drawing outlet die is the theoretical elongation coefficient minus 0.01-0.09; the flat cable parameter is-5 to-40.
According to the preparation method of the all-aluminum alloy stranded wire, the elongation coefficient of the wire drawing outlet die is adjusted, so that the aluminum material is filled in the die gap, and the obtained molded wire monofilament is regular in shape, smooth and free of oil; furthermore, the molded line monofilament has regular shape and small deviation with the designed shape, so that the subsequent molded line monofilament can be smoothly twisted. Meanwhile, the winding displacement parameters are adjusted in advance, so that the winding displacement speed and the winding speed are balanced, and the smooth winding of the molded line monofilament is ensured without wire jumping and turning over.
Preferably, the twisting device for twisting the profile wire monofilament comprises:
a frame body;
an in-frame branching mechanism provided in the frame body;
the frame positioning pipes are used for pre-positioning molded line monofilaments passing through the frame in-frame wire dividing mechanism; the in-frame positioning tube is arranged in the frame body;
the frame outer wiring board is arranged outside the frame body;
a plurality of three-wheel positioning mechanisms arranged on the frame outer branch board
And a doubling die.
Preferably, the preparation method further comprises: the profile wire monofilament is pre-twisted after exiting the three wheel positioning mechanism and before entering the doubling die.
Preferably, the pre-twist is clockwise.
Preferably, the pre-twist is in a counter-clockwise direction.
Preferably, the pre-twist angle is 180 ° to 720 °.
Preferably, the method further comprises the following steps: and performing manual modification before entering the doubling die.
Drawings
Fig. 1 is a schematic structural diagram of a wire dividing plate of a molded-line monofilament twisting device according to an embodiment of the present invention.
Fig. 2 is a side view of the line distribution board of fig. 1.
Fig. 3 is a schematic structural view of a positioning tube in a frame of a molded-line monofilament stranding apparatus according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a three-wheel positioning mechanism of a molded-line monofilament twisting device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
A preparation method of an all-aluminum alloy stranded wire comprises the following steps:
s1, drawing the molded line monofilament;
s2, carrying out heat treatment on the molded line monofilament;
s3, stranding the molded line monofilament after heat treatment;
in step S1, on a non-slip aluminum alloy heavy drawing machineAnd (5) drawing. The elongation coefficient of the wire drawing outlet die is the theoretical elongation coefficient minus 0.01-0.09. Specifically, the calculation formula of the theoretical extension coefficient is: r0 2/R1 2，R0Is the radius, R, of the previous die1Is the radius of the current mold. The elongation coefficient of the wire drawing outlet die is adjusted, so that the aluminum material can fill the die gap, and the obtained molded line monofilament has a regular shape, is smooth and does not carry oil; furthermore, the molded line monofilament has regular shape and small deviation with the designed shape, so that the subsequent molded line monofilament can be smoothly twisted.
In step S1, the winding displacement parameters are-5 to-40. The wire arrangement precision requirement of the wire drawing equipment is higher than that of round wire production in the wire drawing process due to the wire drawing of the molded lines, and the wire arrangement speed and the wire take-up speed are balanced by adjusting the wire arrangement parameters in advance, so that the smooth take-up of the molded line monofilaments is ensured, no wire jumping is caused, and no turn-over phenomenon is caused.
In step S2, the main purpose is to improve the properties of the profile wire monofilament by heat treatment. Specifically, the molded line monofilament is subjected to heat treatment in a heat treatment furnace according to a certain process.
In step S3, the profile wire filaments are stranded using the following stranding apparatus. The stranding device comprises a frame body, an in-frame stranding mechanism, a plurality of in-frame positioning tubes, an out-frame stranding plate, a three-wheel positioning mechanism and a stranding die. It will of course be appreciated that the profile wire twisting device may comprise other components in addition to those described above. Other components may take on configurations deemed appropriate by those skilled in the art and will not be described in detail herein.
Wherein, the in-frame routing mechanism and the in-frame positioning pipe are both arranged in the frame body. The molded line monofilaments firstly pass through an in-frame parting mechanism, so that the molded line monofilaments are scheduled to run, and the phenomena of knotting, breaking and the like caused by mutual interference among the molded line monofilaments are avoided; then the molded line monofilament passes through the positioning tube in the frame, so that the molded line monofilament is prepositioned to prevent the molded line monofilament from twisting.
Furthermore, the in-frame branching mechanism comprises a plurality of branching plates which are mutually enclosed. That is to say, the in-frame branching mechanism is of a plurality of split structures, and each split structure is a branching plate.
In an embodiment, referring to fig. 1-2, the wire distribution board includes a substrate 1, and a plurality of wire holes 2, 3, 4, 5 are formed on the substrate 1. In use, each profile wire filament 7 passes through its corresponding exit hole, which fixes the position of the profile wire filament 7, thus achieving a predetermined routing of the profile wire filament 7. Taking fig. 1 as an example, in the wire distributing plate in fig. 1, 4 wire outlets are formed on the substrate, and are respectively marked as a wire outlet 2, a wire outlet 3, a wire outlet 4, and a wire outlet 5 from left to right.
Preferably, the diameter of the outlet hole is 10 mm-15 mm.
Preferably, the base plate of the distributing board is a bakelite board or a plastic board.
Specifically, the lower edge of the substrate 1 is arc-shaped, and the radian of the arc-shaped lower edge is matched with that of the inner tube of the frame body. The lower part of the base plate is provided with a fixing screw hole 6, and the base plate is fixed by matching a fixing bolt 8 matched with the fixing screw hole.
In another embodiment, a breakout board includes a substrate; the outer edge of the base plate is inwards provided with a plurality of wire dividing grooves. In use, each profile wire filament passes through its corresponding branching slot, which fixes the position of the profile wire filament, thus also achieving a predetermined routing of the profile wire filament.
Preferably, the wire dividing groove is square; the width of the wire dividing groove is 10-15 mm, and the depth of the wire dividing groove is 2/3-1/2 of the height of the substrate.
With particular reference to fig. 3, the main function of the in-frame positioning tube 9 is to pre-position the profile wire passing through the in-frame parting mechanism. Each profile wire filament corresponds to one of the in-frame positioning tubes 9, and each profile wire filament 7 passes through its corresponding in-frame positioning tube 9.
Preferably, a positioning inner hole 10 for the molded line monofilament 7 to pass through is formed in the frame inner positioning tube 9, and the positioning inner hole 10 is trapezoidal or SZ-shaped. When the positioning inner hole 10 is trapezoidal, the positioning pipe in the frame is suitable for trapezoidal profile monofilaments. When the positioning inner hole 10 is SZ-shaped, the positioning tube in the frame is suitable for SZ-shaped molded line monofilaments.
Preferably, the inlet end of the positioning tube 9 in the frame is flared. This facilitates threading of the profile monofilaments out of the inlet end.
Wherein, the frame outer wiring board is arranged outside the frame body. And the molded line monofilament comes out of the frame body, passes through the frame outer branch plate and then passes through the three-wheel positioning mechanism. The three-wheel positioning mechanism is arranged on the frame outer branch plate.
Referring to fig. 4, the three-wheel positioning mechanism includes an upper pressing wheel 11 and lower pressing wheels 12 and 13 respectively positioned at the two sides of the upper pressing wheel 11 and obliquely below the upper pressing wheel. After the molded line monofilament passes through the three-wheel positioning mechanism, the direction of the molded line monofilament can be finally fixed.
In one embodiment, the diameter of upper puck 11 is greater than the diameter of lower pucks 12, 13, and the diameter of lower puck 12 is the same as the diameter of lower puck 13. The upper pressing wheel 11 and the lower pressing wheels 12 and 13 can be nylon wheels or bakelite wheels.
The upper press wheel 11 and the lower press wheels 12, 13 are supported on a steel base plate 14. The upper press wheel 11 can rotate freely around the shaft, and the upper position and the lower position of the upper press wheel on the bottom plate 14 can be adjusted. The lower press wheels 12 and 13 can also freely rotate around respective shafts, and the center distance between the lower press wheels 12 and 13 can be adjusted.
Preferably, the step S3 further includes: the profile wire monofilament is pre-twisted after exiting the three wheel positioning mechanism and before entering the doubling die. Through the pre-twisting, the stress of the molded line monofilament caused by the rotation of the frame body in the twisting process can be counteracted, and the twisting process is facilitated. Preferably, the pre-twisting is done manually.
In some cases, the pre-twist is clockwise. In other cases, the pre-twist is counter-clockwise. The specific pre-twist direction can be selected according to the monofilament installation direction and the frame rotation direction.
Preferably, the pre-twist angle is 180 ° to 720 °.
Preferably, the step S3 further includes: and performing manual modification before entering the doubling die. The molded line monofilament can be further prevented from turning over in the stranding process through manual trimming.
According to the preparation method of the all-aluminum alloy stranded wire, the elongation coefficient of the wire drawing outlet die is adjusted, so that the aluminum material is filled in the die gap, and the obtained molded wire monofilament is regular in shape, smooth and free of oil; furthermore, the molded line monofilament has regular shape and small deviation with the designed shape, so that the subsequent molded line monofilament can be smoothly twisted. Meanwhile, the winding displacement parameters are adjusted in advance, so that the winding displacement speed and the winding speed are balanced, and the smooth winding of the molded line monofilament is ensured without wire jumping and turning over.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The preparation method of the all-aluminum alloy stranded wire is characterized by comprising the following steps of:
drawing a molded line monofilament;
carrying out heat treatment on the molded line monofilament;
and stranding the molded line monofilament after the heat treatment;
in the step of drawing the molded line monofilament, the elongation coefficient of a wire drawing outlet die is the theoretical elongation coefficient minus 0.01-0.09; the flat cable parameter is-5 to-40.
2. The method for preparing the all-aluminum alloy stranded wire according to claim 1, wherein a stranding device adopted for stranding molded line monofilaments comprises:
a frame body;
an in-frame branching mechanism provided in the frame body;
the frame positioning pipes are used for pre-positioning molded line monofilaments passing through the frame in-frame wire dividing mechanism; the in-frame positioning tube is arranged in the frame body;
the frame outer wiring board is arranged outside the frame body;
a plurality of three-wheel positioning mechanisms arranged on the frame outer branch board
And a doubling die.
3. The method for preparing an all-aluminum alloy stranded wire according to claim 2, further comprising: the profile wire monofilament is pre-twisted after exiting the three wheel positioning mechanism and before entering the doubling die.
4. The method of manufacturing an all-aluminum alloy stranded wire according to claim 3, wherein the pre-twist is in a clockwise direction.
5. The method of manufacturing an all-aluminum alloy stranded wire according to claim 3, wherein the pre-twist is in a counterclockwise direction.
6. The method for preparing an all-aluminum alloy stranded wire according to claim 3, wherein the pre-twisting angle is 180 ° to 720 °.
7. The method for preparing an all-aluminum alloy stranded wire according to claim 3, further comprising: and performing manual modification before entering the doubling die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265040.3A CN109300623B (en) | 2018-10-29 | 2018-10-29 | Preparation method of all-aluminum alloy stranded wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265040.3A CN109300623B (en) | 2018-10-29 | 2018-10-29 | Preparation method of all-aluminum alloy stranded wire |
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| CN109300623A CN109300623A (en) | 2019-02-01 |
| CN109300623B true CN109300623B (en) | 2020-06-05 |
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Citations (5)
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|---|---|---|---|---|
| US4765130A (en) * | 1987-11-02 | 1988-08-23 | Northern Telecom Limited | Method and apparatus for making cable core |
| CN101625911A (en) * | 2009-08-10 | 2010-01-13 | 广东吉青电缆实业有限公司 | High-conductivity anti-icing lead and production method thereof |
| CN101879533A (en) * | 2010-07-02 | 2010-11-10 | 宋东升 | Proportioning method for ultra-fine copper wire drawing die |
| CN203652930U (en) * | 2013-12-12 | 2014-06-18 | 无锡西玛梅达电工有限公司 | Automatic take-up device of high-speed wiredrawing enamelling machine |
| CN105023651A (en) * | 2015-07-14 | 2015-11-04 | 福建世纪电缆有限公司 | Method for preparing aluminium alloy trapezoidal conductor |
-
2018
- 2018-10-29 CN CN201811265040.3A patent/CN109300623B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4765130A (en) * | 1987-11-02 | 1988-08-23 | Northern Telecom Limited | Method and apparatus for making cable core |
| CN101625911A (en) * | 2009-08-10 | 2010-01-13 | 广东吉青电缆实业有限公司 | High-conductivity anti-icing lead and production method thereof |
| CN101879533A (en) * | 2010-07-02 | 2010-11-10 | 宋东升 | Proportioning method for ultra-fine copper wire drawing die |
| CN203652930U (en) * | 2013-12-12 | 2014-06-18 | 无锡西玛梅达电工有限公司 | Automatic take-up device of high-speed wiredrawing enamelling machine |
| CN105023651A (en) * | 2015-07-14 | 2015-11-04 | 福建世纪电缆有限公司 | Method for preparing aluminium alloy trapezoidal conductor |
Non-Patent Citations (1)
| Title |
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| 高电导率铝导线拉丝工艺和绞线预成型参数优化;黎汉林等;《光纤与电缆及其应用技术》;20180430(第2期);第24-27页 * |
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| CN109300623A (en) | 2019-02-01 |
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Effective date of registration: 20220119 Address after: 215234 88 Hengtong Road, seven Du Town, Wujiang District, Suzhou, Jiangsu Patentee after: JIANGSU HENGTONG ELECTRIC POWER SPECIAL WIRE Co.,Ltd. Patentee after: Jiangsu Hengtong Cable Technology Co., Ltd Address before: 215234 88 Hengtong Road, seven Du Town, Wujiang District, Suzhou, Jiangsu Patentee before: JIANGSU HENGTONG ELECTRIC POWER SPECIAL WIRE Co.,Ltd. |