Double glass-filament copper-based alloy wrapped wire and preparation method thereof

Abstract

The invention provides a double glass-filament copper-based alloy wrapped wire; comprising a conductor and a wrapping layer arranged as an outer layer of the copper wire; the wrapping layer comprises an insulating layer, an anti-cracking layer and a dense layer; the insulating layer comprises: an insulating film wrapping layer and an insulating varnish layer, the insulating film wrapping layer is arranged between the conductor and the anti-cracking layer, the insulating varnish layer is arranged between the anti-cracking layer and the dense layer, the glass filament wrapping angle in the anti-cracking layer is arranged between 45° and 60°, the glass filament wrapping angle in the dense layer is arranged to be less than 5°, and the glass filament wrapping angle in the dense layer is arranged between 45° and 60°; a preparation method of the double glass-filament copper-based alloy wrapped wire, comprising the following steps: S1 unwinding; S2 straightening and cleaning the conductor; S3 wrapping with an insulating film; S4 wrapping with glass filaments of the anti-cracking layer; S5 sintering; S6 impregnating the wrapped wire with insulating varnish; S7 wrapping with glass filaments of the dense layer; S8 cooling; and S9 winding.

Description

Technical Field

[0001] The invention relates to the technical field of enameled wires, and in particular to a double glass-filament copper-based alloy wrapped wire and a preparation method thereof. Background Art

[0002] At present, double glass-filament copper flat wire generally adopts small pitch and 1-2° wrapping angle when winding glass filament. When winding coil, the bending and adhesion performance of winding wire cannot meet the requirements. During use, the insulation layer is prone to cracking on the bending surface of winding coil, which damages the coil and shortens its service life. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a double glass-filament copper-based alloy wrapped wire and a preparation method thereof.

[0004] The present invention solves the above technical problems through the following technical means:

[0005] Double glass-filament copper-based alloy wrapped wire; comprising a conductor and a wrapping layer arranged as an outer layer of the copper wire; the wrapping layer comprises an insulating layer, an anti-cracking layer and a dense layer; the insulating layer comprises: an insulating film wrapping layer and an insulating varnish layer, the insulating film wrapping layer is arranged between the conductor and the anti-cracking layer, the insulating varnish layer is arranged between the anti-cracking layer and the dense layer, the anti-cracking layer and the dense layer are formed by wrapping glass filaments, the wrapping angle of the glass filaments in the anti-cracking layer is arranged between 45° and 60°, and the wrapping angle of the glass filaments in the dense layer is arranged to be less than 5°.

[0006] As an improvement of the above technical solution, the number of glass fibers in the anti-cracking layer is two, and the winding directions are opposite; the number of glass fibers in the dense layer is two, and the winding directions are opposite.

[0007] As an improvement of the above technical solution, the insulating film wrapping layer is formed by cross-wrapping of two insulating films, and the wrapping directions of the two insulating films are opposite.

[0008] As an improvement of the above technical solution, the wrapping angle of the insulating film in the insulating film wrapping layer is set to 30-45°.

[0009] The preparation method of the double glass-filament copper-based alloy wrapped wire comprises the following steps:

[0010] S1 Pay-off

[0011] Paying off the packaged conductors with constant tension;

[0012] S2 wire straightening and cleaning

[0013] Straighten and clean the metal wire: a ruler is used for straightening; the cleaning device is a nylon wheel. The copper dust brought out when the nylon wheel contacts the metal wire is absorbed by the funnel-shaped vacuum cleaner under the device to ensure the cleanliness of the wire surface;

[0014] S3 Insulation Film Wrapping

[0015] Apply sintering glue on one side of the insulating film and place the side close to the conductor for wrapping, with the wrapping overlap rate being 50%-75%;

[0016] S4 anti-crack layer glass fiber wrapping

[0017] Two glass fibers are wrapped around the conductor after passing through S3 in a cross-wrapping manner, and the wrapping angle is controlled between 45° and 60°;

[0018] S5 Sintering

[0019] The wire in S4 is passed through the inductor of the high frequency furnace to sinter the wire to form a sintered layer;

[0020] S6 wrapped wire impregnated with insulating varnish

[0021] Pass the wire processed by S5 through the insulating paint box filled with insulating paint;

[0022] S7 dense layer glass fiber wrapping

[0023] Two glass fibers are wrapped around the conductor after S6 in a cross-wrapping manner, and the wrapping angle is controlled to be less than 5°;

[0024] S8 Cooling

[0025] Pass the wire processed by S7 through a cooling box filled with cooling water to cool the wire;

[0026] S9 Rewind

[0027] The cooled wire is reeled in with constant tension.

[0028] As an improvement of the above technical solution, the scale of the ruler is 2 to 30 mm; the rotation speed of the nylon wheel is 100 to 1000 rpm.

[0029] As an improvement of the above technical solution, the tension in S1 and S9 is controlled within the range of 5 to 80N.

[0030] Beneficial effects of the present invention:

[0031] 1. The glass fiber wrapping angle in the anti-cracking layer is set between 45° and 60°, which can play a tensile role in the radial direction of the wrapped wire, so that the wrapped wire will not crack in the radial direction when winding and bending, thereby preventing the cracking of the insulating film wrapping layer of the wrapped wire, which leads to a decrease in the service life of the wrapped wire, and increases the bending degree of the wrapped wire under the same conditions, with wider adaptability; the glass fiber wrapping angle in the dense layer is set to less than 5°, which can make the conductor insulation film wrapping layer, anti-cracking layer and insulating paint layer close together, avoiding the influence of external force on its insulation;

[0032] 2. The pay-off and take-up are set to constant tension, which can make the wrapped wire move forward at a uniform speed during the processing, and will not be tightened or loosened suddenly, resulting in uneven thickness of the insulation layer of the wrapped wire and reduced insulation performance; BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of a double glass-filament copper-based alloy wrapped wire according to an embodiment of the present invention;

[0034] Figure 2 This is a flow chart of a method for preparing a double glass-filament copper-based alloy wrapped wire according to an embodiment of the present invention;

[0035] Conductor 1, winding layer 2, insulation layer 21, insulation film winding layer 211, insulation paint layer 212, anti-cracking layer 22, dense layer 23. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0038] Example

[0039] like Figure 1As shown, the double glass-filament copper-based alloy wrapped wire described in this embodiment includes a conductor 1 and a wrapping layer 2 set as the outer layer of the copper wire; the wrapping layer includes an insulating layer 21, an anti-cracking layer 22 and a dense layer 23; the insulating layer 21 includes: an insulating film wrapping layer 211 and an insulating varnish layer 212, the insulating film wrapping layer 211 is arranged between the conductor 1 and the anti-cracking layer 22, the insulating varnish layer 212 is arranged between the anti-cracking layer 22 and the dense layer 23, the anti-cracking layer 22 and the dense layer 23 are formed by wrapping glass fibers, the glass fiber wrapping angle in the anti-cracking layer 22 is set between 45° and 60°, and the glass fiber wrapping angle in the dense layer 23 is set to less than 5°.

[0040] The glass fiber wrapping angle in the anti-cracking layer 22 is set between 45° and 60°, which can play a tensile role in the radial direction of the wrapped wire, so that the wrapped wire will not crack in the radial direction when winding and bending, thereby preventing the situation in which the insulating film of the wrapped wire is cracked and the service life of the wrapped wire is reduced, and the bending degree of the wrapped wire under the same conditions is increased, and the adaptability is wider;

[0041] The glass fiber wrapping angle in the dense layer 23 is set to less than 5°, which can make the insulating film wrapping layer 211, the anti-cracking layer 22 and the insulating paint layer 212 of the wire 1 close together to prevent the insulation from being affected by external forces.

[0042] The number of glass fibers in the anti-cracking layer 22 is two, and the winding directions are opposite; the number of glass fibers in the dense layer 23 is two, and the winding directions are opposite.

[0043] The anti-cracking layer 22 and the dense layer 23 are cross-wrapped with two glass fibers, which can improve the mechanical properties of the anti-cracking layer 22 and the dense layer 23 and avoid the anti-cracking layer 22 and the dense layer 23 from breaking when the wrapped wire is bent, thereby affecting the insulation of the wrapped wire.

[0044] The insulating film wrapping layer 211 is formed by cross-wrapping of two insulating films, and the wrapping directions of the two insulating films are opposite, so that the insulating film covers the conductor 1 more evenly and has better insulation performance.

[0045] The wrapping angle of the insulating film in the insulating film wrapping layer 211 is set to 30-45°; increasing the wrapping angle while ensuring the overlapping rate can improve the tensile performance of the wrapped wire when it is bent, and improve the adaptability and service life of the wrapped wire.

[0046] like Figure 2 As shown, the preparation method of the double glass-filament copper-based alloy wrapped wire comprises the following steps:

[0047] S1 Pay-off

[0048] Paying off the packaged conductors with constant tension;

[0049] S2 wire straightening and cleaning

[0050] Straighten and clean the wire: a ruler is used for straightening; the cleaning device is a nylon wheel. The copper dust brought out when the nylon wheel contacts the metal wire is absorbed by the funnel-shaped vacuum cleaner under the device to ensure the cleanliness of the wire surface;

[0051] S3 Insulation Film Wrapping

[0052] Apply sintering glue on one side of the insulating film and place the side close to the conductor for wrapping, with the wrapping overlap rate being 50%-75%;

[0053] S4 anti-crack layer glass fiber wrapping

[0054] Two glass fibers are wrapped around the conductor after passing through S3 in a cross-wrapping manner, and the wrapping angle is controlled between 45° and 60°;

[0055] S5 Sintering

[0056] The wire in S4 is passed through the inductor of the high frequency furnace to sinter the wire 1 to form a sintered layer;

[0057] S6 wrapped wire impregnated with insulating varnish

[0058] Pass the wire processed by S5 through the insulating paint box filled with insulating paint;

[0059] S7 dense layer glass fiber wrapping

[0060] The conductors after S6 are wrapped by cross wrapping, and the wrapping angle is controlled to be less than 5°;

[0061] S8 Cooling

[0062] Pass the wire processed by S7 through a cooling box filled with cooling water to cool the wire;

[0063] S9 Rewind

[0064] The cooled wire is reeled in with constant tension.

[0065] The scale of the scale is 2-30 mm; the rotation speed of the nylon wheel is 100-1000 rpm.

[0066] The tension in S1 and S9 is controlled within the range of 5 to 80N.

[0067] It should be noted that, in this article, if there are first and second, etc., relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Double glass fiber copper-based alloy wrapped wire, characterized by: It comprises a conductor and a wrapping layer arranged on the outer layer of the conductor; the wrapping layer comprises an insulating layer, an anti-cracking layer and a dense layer; the insulating layer comprises: an insulating film wrapping layer and an insulating varnish layer, the insulating film wrapping layer is arranged between the conductor and the anti-cracking layer, the insulating varnish layer is arranged between the anti-cracking layer and the dense layer, the anti-cracking layer and the dense layer are formed by wrapping glass fibers, the wrapping angle of the glass fibers in the anti-cracking layer is set between 45° and 60°, and the wrapping angle of the glass fibers in the dense layer is set to be less than 5°; The number of glass fibers in the anti-cracking layer is two, and the winding directions are opposite; the number of glass fibers in the dense layer is two, and the winding directions are opposite; The insulating film wrapping layer is formed by cross-wrapping of two insulating films, and the wrapping directions of the two insulating films are opposite; the wrapping overlap rate of the insulating film wrapping layer is 50%-75%.

2. The double glass-filament copper-based alloy wrapped wire according to claim 1, characterized in that: The wrapping angle of the insulating film in the insulating film wrapping layer is set to 30-45°.

3. A method for preparing a double glass-filament copper-based alloy wrapped wire, characterized in that: The following steps are involved: S1 Pay-off Paying off the packaged conductors with constant tension; S2 wire straightening and cleaning Straighten and clean the metal wire: a ruler is used for straightening; the cleaning device is a nylon wheel. The copper dust brought out when the nylon wheel contacts the metal wire is absorbed by the funnel-shaped vacuum cleaner under the device to ensure the cleanliness of the wire surface; S3 Insulation Film Wrapping Apply sintering glue on one side of the insulating film and place it close to the conductor for wrapping. The wrapping overlap rate is 50%-75%; S4 anti-crack layer glass fiber wrapping Two glass fibers are wrapped around the conductor after passing through S3 in a cross-wrapping manner, and the wrapping angle is controlled between 45° and 60°; S5 Sintering The wire in S4 is passed through the inductor of the high frequency furnace to sinter the wire to form a sintered layer; S6 wrapped wire impregnated with insulating varnish Pass the wire processed by S5 through the insulating paint box filled with insulating paint; S7 dense layer glass fiber wrapping Two glass fibers are wrapped around the conductor after S6 in a cross-wrapping manner, and the wrapping angle is controlled to be less than 5°; S8 Cooling Pass the wire processed by S7 through a cooling box filled with cooling water to cool the wire; S9 Rewind The cooled wire is reeled in with constant tension.

4. The method for preparing the double glass-filament copper-based alloy wrapped wire according to claim 3, characterized in that: The scale of the scale is 2-30 mm; the rotation speed of the nylon wheel is 100-1000 rpm.

5. The method for preparing the double glass-filament copper-based alloy wrapped wire according to claim 3, characterized in that: The tension in S1 and S9 is controlled within the range of 5 to 80N.

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