A cable copper wire shielding machine

Abstract

The present invention discloses a cable copper wire shielding machine, comprising a frame and a rotating shaft and a twisted body with interference fit on the outer circumference side of one end of the rotating shaft, an axial threading hole for threading a wire core is provided on the rotating shaft, the twisted body is a regular octagonal prism structure, and a plurality of mounting shafts for mounting a copper wire shaft are vertically connected on each side of the twisted body, and the plurality of mounting shafts are evenly arranged along the axial direction of the twisted body, a wire guide plate is fixed on the twisted body between two adjacent mounting shafts, and a wire guide hole is provided on the wire guide plate corresponding to the position of the mounting shaft; a uniform distribution disk is fixed on the other end of the rotating shaft for uniformly distributing the copper wires led out of the copper wire shaft on the peripheral wall of the wire core, and uniform distribution holes are provided on the uniform distribution disk and at the position corresponding to each wire guide hole. The present invention adopts the cable copper wire shielding machine of the above structure, and by setting a twisted body with a regular octagonal prism structure, a plurality of mounting shafts can be evenly arranged on each side of the twisted body, thereby increasing the number of mounting shafts, thereby increasing the number of copper wire shafts, and meeting the technical requirements of cable copper wire shielding.

Description

Technical Field

[0001] The invention relates to a cable processing technology, in particular to a cable copper wire shielding machine. Background Art

[0002] Cable copper wire shielding machines are widely used in the cable industry, especially for electrified railway 27.5kV single-phase AC cross-linked polyethylene insulated cables, which all adopt copper wire shielding structure. The traditional copper wire shielding machine is a disc structure, that is, the copper wire shaft for shielding is installed on a capstan. This structure has the following problems: 1. The number of copper wire shafts that can be installed on the capstan is small, and only 48 shafts can be installed at most, which does not meet the requirement of at least 65 shafts for copper wire shielding of 27.5kV single-phase AC cross-linked polyethylene insulated cables for electrified railways; 2. The copper wires are easy to be disordered during shielding, which does not meet the national standard shielding requirements of the average gap between adjacent copper wires not more than 4mm, and the gap between any two adjacent copper wires should not be more than 8mm. Summary of the invention

[0003] The object of the present invention is to provide a cable copper wire shielding machine. By setting a twisted body with a regular octagonal prism structure, multiple installation shafts can be evenly arranged on each side of the twisted body, thereby increasing the number of installation shafts and thus increasing the number of copper wire shafts to meet the cable copper wire shielding process requirements.

[0004] To achieve the above-mentioned purpose, the present invention provides a cable copper wire shielding machine, comprising a frame and a rotating shaft rotatably arranged at the top of the frame and a twisted body with an interference fit on the outer circumference of one end of the rotating shaft, the rotating shaft is provided with an axial connection hole for threading a wire core, the twisted body is a regular octagonal prism structure, each side of the twisted body is vertically connected with a plurality of mounting shafts for mounting copper wire shafts, the plurality of mounting shafts are evenly arranged along the axial direction of the twisted body, a wire guide plate is fixed on the twisted body between two adjacent mounting shafts, and the wire guide plate is provided with a wire guide hole at a position corresponding to the mounting shaft;

[0005] A distribution disk is fixed at the other end of the rotating shaft to evenly distribute the copper wires led out from the copper wire shaft on the peripheral wall of the wire core. Uniform distribution holes are provided on the distribution disk corresponding to the position of each wire guide hole.

[0006] Preferably, 9 installation shafts are evenly arranged axially on each side of the twisted body, a positioning bolt is fixed to one end of the installation shaft away from the twisted body, and the copper wire shaft and the compression spring are fixed in sequence on the installation shaft between the positioning bolt and the twisted body.

[0007] Preferably, a brake disc is also fixed on the outer circumferential side of the rotating shaft, and the brake disc, the stranded body, and the uniformly distributed disc are sequentially arranged on the rotating shaft.

[0008] Preferably, the end of the rotating shaft is connected to a driving mechanism linked to the traction machine, and the driving mechanism includes a driving motor, and the driving motor is connected to a pulley fixed on the rotating shaft via a belt.

[0009] Preferably, the drive motor is a stepless speed regulating motor.

[0010] The present invention has the following beneficial effects:

[0011] 1. By designing the stranded body into a regular octagonal prism structure, the structural strength of the stranded body can be increased, the arrangement of the copper wire shafts can be more reasonable, and the number of copper wire shafts that can be installed can also be increased, meeting the technical requirements of cable copper wire shielding, and overcoming the problem of copper wire entanglement and insufficient number of copper wires caused by installing copper wire shafts on both sides of the capstan of the original disc-type shielding machine.

[0012] 2. The uniform distribution disk adopts our company's patented product 201721114846.3, "Device for uniformly distributing copper wires in the cable shielding layer", which ensures that the national standard requirements of the average gap between adjacent copper wires should not exceed 4mm, and the gap between any two adjacent copper wires should not exceed 8mm are met, thus ensuring product quality and improving production efficiency.

[0013] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a transverse cross-sectional view of a cable copper wire shielding machine according to an embodiment of the present invention;

[0015] Figure 2 The figure is a longitudinal cross-sectional view of a cable copper wire shielding machine according to an embodiment of the present invention.

[0016] Among them: 1. frame; 2. stranded body; 3. driving mechanism; 4. brake disc; 5. copper wire shaft; 6. wire guide plate; 7. uniform distribution disc; 8. rotating shaft; 9. mounting shaft; 10. compression spring. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0018] Figure 1 It is a transverse cross-sectional view of a cable copper wire shielding machine according to an embodiment of the present invention; Figure 2 This is a longitudinal cross-sectional view of a cable copper wire shielding machine according to an embodiment of the present invention. It should be noted that: Figure 1 In order to illustrate the structure of the copper wire shaft, the entire copper wire shaft and the conductor plate are not drawn. Those skilled in the art can understand the structure of the copper wire shaft according to the contents of this embodiment and the Figure 1The content shown can reasonably infer its actual structure. As shown in the figure, the structure of the present invention includes a frame 1 and a rotating shaft 8 rotatably arranged at the top of the frame 1 and a twisted body 2 with an interference fit on the outer circumferential side of one end of the rotating shaft 8. The rotating shaft 8 is provided with an axial penetration hole for threading the wire core. The twisted body 2 is a regular octagonal prism structure. Each side of the twisted body 2 is vertically connected with a plurality of mounting shafts 9 for installing the copper wire shaft 5. The plurality of mounting shafts 9 are evenly arranged along the axial direction of the twisted body 2. A wire guide plate 6 is fixed on the twisted body 2 between two adjacent mounting shafts 9. The wire guide plate 6 is provided with a wire guide hole at a position corresponding to the mounting shaft 9. The setting of the wire guide plate 6 can prevent the copper wires from being entangled with each other. A uniform distribution disk 7 is fixed at the other end of the rotating shaft 8 for evenly distributing the copper wires derived from the copper wire shaft 5 on the peripheral wall of the wire core. Uniformly distributed holes are provided on the uniformly distributed disk 7 and at the position corresponding to each of the guide wire holes. The uniformly distributed disk 7 in this embodiment adopts the existing design of the patent previously applied for by our company, patent number 201721114846.3, patent name "Device for uniformly distributing copper wires in a cable shielding layer", so the structural principle of the uniformly distributed disk 7 itself will not be described in detail. It should also be noted that the uniformly distributed holes on the uniformly distributed disk 7 in this embodiment are equivalent to the pores in the above-mentioned prior patent. By setting the uniformly distributed disk 7, when the copper wire shielding layer of the cable is sparsely wound with copper wires, the spacing between adjacent copper wires can be effectively improved while meeting the requirements of the standard, so that the copper wires in the shielding layer are evenly and tightly distributed on the outer peripheral wall of the shielding core, meeting the national standard requirements that the average gap between adjacent copper wires should not be greater than 4mm, and the gap between any two adjacent copper wires should not be greater than 8mm.

[0019] Preferably, 9 mounting shafts 9 are evenly arranged axially on each side of the twisted body 2, a positioning bolt is fixed on one end of the mounting shaft 9 away from the twisted body 2, and the copper wire shaft 5 and the compression spring 10 are fixed in sequence on the mounting shaft 9 between the positioning bolt and the twisted body 2, that is, the twisted body 2 of this embodiment has a total of 8 sides, and 9 mounting shafts 9 are evenly arranged on each side, so a total of 72 mounting shafts 9 (copper wire shafts 5) are installed, which meets the requirements on the number of shielded copper wires of the cable, and the compression spring 10 on the mounting shaft 9 can ensure that the copper wire tension is stable and consistent during production.

[0020] Preferably, a brake disc 4 is also fixed on the outer circumferential side of the rotating shaft 8, and the brake disc 4, the stranded body 2, and the uniformly distributed disc 7 are sequentially arranged on the rotating shaft 8 to ensure that over-torque does not occur when parking.

[0021] Preferably, the end of the rotating shaft 8 is connected to a driving mechanism 3 linked to the traction machine, and the driving mechanism 3 includes a driving motor, and the driving motor is connected to a pulley fixed on the rotating shaft 8 via a belt. Preferably, the driving motor is a stepless speed regulating motor to ensure that when the cable is pulled forward by the traction machine, the strand 2 rotates synchronously to evenly wind the copper wire around the cable insulation shielding layer.

[0022] Working process: the copper wire on each copper wire shaft 5 on the stranded body 2 is passed through the conductor plate and the uniform distribution disk 7 in turn, and fixed to the end of the wire core, the traction machine and the driving motor are turned on, and the wire core moves through the uniform distribution disk 7 at a set speed under the traction of the equipment traction machine. The uniform distribution disk 7 loaded with copper wire rotates at a set speed, and the copper wires (the copper wires are very long) inserted in the uniform distribution holes can be evenly distributed on the outer peripheral wall of the wire core as they rotate.

[0023] Therefore, the present invention adopts the cable copper wire shielding machine of the above structure. By setting a twisted body with a regular octagonal prism structure, multiple installation shafts can be evenly arranged on each side of the twisted body, thereby increasing the number of installation shafts and thus increasing the number of copper wire shafts to meet the cable copper wire shielding process requirements.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A cable copper wire shielding machine, comprising a frame, a rotating shaft rotatably arranged at the top of the frame, and a twisted body with an interference fit on the outer circumference of one end of the rotating shaft, wherein the rotating shaft is provided with an axial connection hole for threading a wire core, characterized in that: The twisted body is a regular octagonal prism structure, and a plurality of mounting shafts for mounting copper wire shafts are vertically connected to each side of the twisted body, and the plurality of mounting shafts are evenly arranged along the axial direction of the twisted body, and a wire guide plate is fixed on the twisted body between two adjacent mounting shafts, and a wire guide hole is opened on the wire guide plate at a position corresponding to the mounting shaft; The other end of the rotating shaft is fixed with a uniform distribution disk for evenly distributing the copper wires led out of the copper wire shaft on the peripheral wall of the wire core, and uniform distribution holes are provided on the uniform distribution disk corresponding to the position of each of the wire guide holes; Nine installation shafts are evenly arranged axially on each side of the strand, a positioning bolt is fixed to one end of the installation shaft away from the strand, and the copper wire shaft and the compression spring are fixed in sequence on the installation shaft between the positioning bolt and the strand; The end of the rotating shaft is connected to a driving mechanism linked to the traction machine, and the driving mechanism includes a driving motor, and the driving motor is connected to a pulley fixed on the rotating shaft via a belt; The copper wire on each copper wire shaft on the stranded body is passed through the conductor plate and the uniform distribution disk in turn, and fixed to the end of the wire core. The traction machine and the drive motor are turned on. The wire core moves through the uniform distribution disk at a set speed under the traction of the equipment traction machine. The uniform distribution disk equipped with copper wire rotates at a set speed, and the copper wires inserted in the uniform distribution holes can be evenly distributed on the outer peripheral wall of the wire core as they rotate.

2. A cable copper wire shielding machine according to claim 1, characterized in that: A brake disc is also fixed on the outer circumference side of the rotating shaft, and the brake disc, the stranded body, and the uniformly distributed disc are arranged on the rotating shaft in sequence.

3. A cable copper wire shielding machine according to claim 1, characterized in that: The driving motor is a stepless speed regulating motor.

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