Submarine cable aluminum tape longitudinal wrapping equipment

Abstract

The utility model discloses submarine cable aluminum tape longitudinal wrapping equipment, which comprises a bearing unit for bearing a semi-finished cable with an aluminum sleeve layer to be formed, a forming unit for wrapping an aluminum tape on the outer layer of the semi-finished cable, and a shaping unit for fixing the aluminum tape on the outer layer of the semi-finished cable, a semi-finished cable and an aluminum strip sequentially pass through the bearing unit, the forming unit and the shaping unit, the shaping unit comprises a wire feeder and a laser welding gun, the wire feeder is used for filling aluminum wires into a welding seam when the aluminum strip wraps the semi-finished cable, the laser welding gun is used for completing welding of the welding seam of the aluminum strip, and the wire feeder is provided with two wire feeding gun heads. And the two wire feeding gun heads are used for filling the welding seam with aluminum wires in turn. The submarine cable aluminum tape longitudinal wrapping equipment provided by the utility model can avoid a welding section caused by interruption of aluminum wire feeding.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a device for longitudinally wrapping submarine cables with aluminum strips. Background Art

[0002] During the cable design process, in order to better protect the marine environment, materials that are easy to pollute the marine environment, such as lead sheaths and asphalt, are constantly being replaced by a combination of copper wire and aluminum-plastic tape or aluminum tape.

[0003] During the process of forming aluminum sleeves with aluminum strips, the aluminum strips will wrap the semi-finished submarine cable longitudinally, so that a welding seam set along the axial direction of the semi-finished submarine cable will be formed on the surface of the semi-finished submarine cable on both sides of the aluminum strips. When welding the weld seam, if the aluminum strip is welded by residual welding, there may be a gap between the formed aluminum sleeve and the semi-finished cable, which is difficult to control. Therefore, the width of the aluminum strip will be cut to be slightly smaller than the circumference of the semi-finished cable, and then aluminum wire will be filled in the welding seam by wire feeding to ensure the welding quality and the fit between the aluminum sleeve and the semi-finished cable. However, this method often causes interruption of aluminum wire feeding, and subsequent reinstallation of new aluminum wire and aluminum wire feeding. The interval between the two is too long, and the former has been cooled and shaped, which makes it easy to form a welding section at the interruption of the aluminum wire, thereby affecting the welding quality and being not conducive to the long-term use of the cable. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a submarine cable aluminum tape longitudinal wrapping device which can avoid welding cross sections caused by aluminum wire feeding interruption.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problem is: a submarine cable aluminum tape longitudinal wrapping equipment, including a receiving unit for receiving a semi-finished cable of a to-be-formed aluminum tape layer, a molding unit for wrapping the aluminum tape around the outer layer of the semi-finished cable, and a shaping unit for fixing the aluminum tape to the outer layer of the semi-finished cable, the semi-finished cable and the aluminum tape pass through the receiving unit, the molding unit and the shaping unit in sequence, the shaping unit includes a wire feeder and a laser welding gun, the wire feeder is used to fill aluminum wire into the weld when the aluminum tape wraps the semi-finished cable, the laser welding gun is used to complete the weld of the aluminum tape, the wire feeder is provided with two wire feeding gun heads, and the two wire feeding gun heads take turns to fill the weld with aluminum wire.

[0006] Compared with the prior art, the utility model has the following advantages: in order to avoid continuous excessively high welding temperature during the welding process, thereby causing damage to the semi-finished cable, a laser welding gun is used for spot welding. In addition to realizing the melting of the aluminum wire for welding the weld, it will not cause continuous high temperature of the semi-finished cable, thereby ensuring the quality of the semi-finished cable. The wire feeder is provided with two wire feeding gun heads. When one wire feeding gun head stops feeding the wire, the other wire feeding gun head can quickly continue feeding the wire. Before the aluminum wire of the previous wire feeding gun head is cooled, the new aluminum wire also completes the melting welding process, so that the ends of the two sections of aluminum wire are fused, thereby ensuring the continuity of the welding of the two sections of aluminum wire and avoiding the problem of welding section. At the same time, the wire feeding gun head that stops feeding the wire can be disassembled to supplement the new aluminum wire. Welding is also carried out during the wire changing process, thereby improving welding efficiency.

[0007] As an improvement of the utility model, the receiving unit includes a conveyor belt, the aluminum belt is placed on the conveyor belt, and the semi-finished cable is placed on the aluminum belt. A traction mechanism is provided at one end of the cable molding to pull the cable to move so as to drive the aluminum belt and the semi-finished cable on the conveyor belt to move synchronously. Through the improvement, the initial docking of the aluminum belt and the semi-finished cable in the receiving unit is achieved, ensuring that the aluminum belt can accurately wrap the semi-finished cable when they enter the molding unit.

[0008] As an improvement of the present invention, the molding unit includes an airplane model, a conical hole is provided on the axis of the airplane model, and the diameter of the conical hole decreases from the receiving unit toward the shaping unit to guide the aluminum strip to pass through the airplane model and be wrapped around the semi-finished cable. Through the improvement, the airplane model can guide the aluminum strip to deform and wrap it around the semi-finished cable.

[0009] As an improvement of the present invention, the wire feeder and the laser welding gun are arranged at the outlet of the tapered hole. A sizing die is also provided on the side of the wire feeder away from the tapered hole. The inner diameter of the sizing die is equal to the diameter of the outlet end of the tapered hole. Through the improvement, when the aluminum strip is just wrapped around the semi-finished cable, the aluminum strip will expand due to the memory of the metal material, and thus cannot maintain fit with the semi-finished cable. Therefore, the wire feeder and the laser welding gun are arranged at the outlet of the tapered hole. When the aluminum strip and the semi-finished cable are moved out of the tapered opening, the welding of the aluminum strip is immediately completed to form an aluminum sleeve to avoid expansion of the aluminum strip. When the welding is just completed, the aluminum wire has not yet cooled and solidified, and the formed aluminum sleeve is still at risk of expansion and expansion. Therefore, the sizing die is designed to avoid expansion and expansion of the aluminum sleeve, thereby ensuring fit between the aluminum sleeve and the semi-finished cable and giving the aluminum wire time to cool and solidify.

[0010] As an improvement of the utility model, the sizing die is coaxially arranged with the tapered hole. Through the improvement, the axial linearity of the movement of the aluminum sleeve and the semi-finished cable is ensured, and the uneven distribution of the aluminum wire during melting and shaping when the aluminum sleeve is formed is avoided due to bending caused by the aluminum sleeve not completing cooling and solidification, so as to avoid quality problems of the aluminum sleeve, which is not conducive to the long-term use of the cable.

[0011] As an improvement of the utility model, the molding unit further comprises a double extrusion head, and the double extrusion head is used to simultaneously extrude the HDPE and the semi-conductive sheath layer on the outer layer of the semi-finished cable. Through the improvement, the molding of the cable is achieved.

[0012] As an improvement of the utility model, a hot melt glue gun is further provided between the double extrusion head and the sizing die, and a plurality of the hot melt glue guns are provided, and the plurality of hot melt glue guns are arranged in a uniform array along the circumference of the semi-finished cable. Through the improvement, the design of the plurality of hot melt glue guns ensures the uniformity of the distribution of the hot melt glue on the aluminum sleeve, thereby ensuring the adhesion between the HDPE and the aluminum sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall top view structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the overall sectional structure of the utility model.

[0015] As shown in the figure: 1. Semi-finished cable, 2. Aluminum strip, 3. Receiving unit, 3.1. Conveyor belt, 4. Forming unit, 4.1. Airplane mold, 4.1.1. Conical hole, 5. Shaping unit, 5.1. Sizing mold, 5.2. Double extrusion machine head, 5.3. Hot melt glue gun, 6. Laser welding gun, 7. Wire feeding gun head. DETAILED DESCRIPTION

[0016] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0017] like Figure 1-2 As shown, a submarine cable aluminum tape longitudinal wrapping equipment includes a receiving unit 3 for receiving a semi-finished cable 1 to be molded with an aluminum sheath, a molding unit 4 for wrapping an aluminum tape 2 around the outer layer of the semi-finished cable 1, and a shaping unit 5 for fixing the aluminum tape 2 on the outer layer of the semi-finished cable 1. The semi-finished cable 1 and the aluminum tape 2 pass through the receiving unit 3, the molding unit 4 and the shaping unit 5 in sequence. The shaping unit 5 includes a wire feeder and a laser welding gun 6. The wire feeder is used to fill aluminum wire into the weld when the aluminum tape 2 wraps the semi-finished cable 1. The laser welding gun 6 is used to complete the weld of the aluminum tape 2. The wire feeder is provided with two wire feeding gun heads 7. The two wire feeding gun heads 7 take turns to fill the weld with aluminum wire.

[0018] The design of two wire feeding gun heads 7 on the wire feeding machine has two sets of wire feeding mechanisms in the wire feeding machine, and the wire feeding mechanisms are conventional wire feeding mechanisms, and the two sets of wire feeding mechanisms are respectively connected to one wire feeding gun head 7, and the two sets of wire feeding mechanisms are controlled and connected by a single chip microcomputer. When one set of wire feeding mechanisms finishes feeding the wire, the other set of wire feeding mechanisms quickly fills in the wire feeding operation. Alternatively, two single-wire wire feeding machines are directly used to perform wire feeding operations in turns.

[0019] The receiving unit 3 includes a conveyor belt 3.1, the aluminum strip 2 is placed on the conveyor belt 3.1, and the semi-finished cable 1 is placed on the aluminum strip 2. A traction mechanism is provided at one end of the formed cable to traction the cable to move so as to drive the aluminum strip 2 and the semi-finished cable 1 on the conveyor belt 3.1 to move synchronously. The driving speed of the conveyor belt 3.1 is the same as the traction speed of the cable to avoid relative sliding between the aluminum strip 2 and the conveyor belt 3.1, which causes wear on the surface of the aluminum strip 2.

[0020] The forming unit 4 includes an airplane mold 4.1, on the axis of which a conical hole 4.1.1 is provided, the diameter of which decreases from the receiving unit 3 toward the shaping unit 5 to guide the aluminum strip 2 to be wrapped around the semi-finished cable 1 when passing through the airplane mold 4.1, the wire feeder and the laser welding gun 6 are arranged at the outlet of the conical hole 4.1.1, and a sizing die 5.1 is also provided on the side of the wire feeder away from the conical hole 4.1.1, the sizing die 5.1 is a circular ring, the inner diameter of which is equal to the diameter of the outlet end of the conical hole 4.1.1, and the sizing die 5.1 is coaxially arranged with the conical hole 4.1.1.

[0021] The delivery end of the conveyor belt 3.1 is arranged inside the tapered hole 4.1.1 to ensure that the aluminum strip 2 and the semi-finished cable 1 have entered the tapered hole 4.1.1 when they are separated from the conveyor belt 3.1.

[0022] The shaping unit 5 also includes a double extruder head 5.2, which is used to simultaneously extrude the HDPE and semi-conductive sheath layers on the outer layer of the semi-finished cable 1. A hot melt glue gun 5.3 is also provided between the double extruder head 5.2 and the sizing die 5.1. A plurality of hot melt glue guns 5.3 are provided, and the plurality of hot melt glue guns 5.3 are uniformly arrayed along the circumference of the semi-finished cable 1. The number of hot melt glue guns 5.3 is determined according to the diameter of the cable to ensure the uniformity and integrity of the hot melt glue gun 5.3 sprayed on the aluminum sleeve.

[0023] The laser welding gun 6, wire feeding gun head 7, hot melt glue gun 5.3, and double extruder head 5.2 are all conventional structures, wherein the double extruder head 5.2 is fixedly connected to the double-discharge extruder, and simultaneously forms HDPE and semi-conductive sheath layers on the cable.

[0024] In the application of this product, the thickness of the aluminum tape 2 is more than 0.5 mm. Compared with the 0.2 mm aluminum tape 2 and the 0.06 mm plastic tape structure in the aluminum-plastic tape structure, the molding is simpler, the elongation and tensile strength are improved, and the quality of the submarine cable is significantly improved.

[0025] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. A submarine cable aluminum tape longitudinal wrapping device, characterized by: The invention comprises a receiving unit (3) for receiving a semi-finished cable (1) having an aluminum sheath to be formed, a forming unit (4) for wrapping an aluminum strip (2) on the outer layer of the semi-finished cable (1), and a shaping unit (5) for fixing the aluminum strip (2) on the outer layer of the semi-finished cable (1). The semi-finished cable (1) and the aluminum strip (2) pass through the receiving unit (3), the forming unit (4), and the shaping unit (5) in sequence. The shaping unit (5) comprises a wire feeder and a laser welding gun (6). The wire feeder is used to fill aluminum wire into the weld when the aluminum strip (2) wraps the semi-finished cable (1). The laser welding gun (6) is used to complete the welding of the weld of the aluminum strip (2). The wire feeder is provided with two wire feeding gun heads (7). The two wire feeding gun heads (7) fill the weld with aluminum wire in turn.

2. According to claim 1, a submarine cable aluminum tape longitudinal wrapping device is characterized in that: The receiving unit (3) comprises a conveyor belt (3.1), the aluminum belt (2) is placed on the conveyor belt (3.1), and the semi-finished cable (1) is placed on the aluminum belt (2). A traction mechanism is provided at one end of the formed cable for traction of the cable to move so as to drive the aluminum belt (2) and the semi-finished cable (1) on the conveyor belt (3.1) to move synchronously.

3. According to claim 1, a submarine cable aluminum tape longitudinal wrapping device is characterized in that: The molding unit (4) comprises an airplane model (4.1), wherein a conical hole ( 4.1.1), the diameter of the tapered hole (4.1.1) decreases from the receiving unit (3) to the shaping unit (5) to guide the aluminum strip (2) to wrap around the semi-finished cable (1) when passing through the aircraft model (4.1).

4. According to claim 3, a submarine cable aluminum tape longitudinal wrapping device is characterized in that: The wire feeder and the laser welding gun (6) are arranged at the outlet of the tapered hole (4.1.1), and a sizing die (5.1) is also arranged on the side of the wire feeder away from the tapered hole (4.1.1), wherein the inner diameter of the sizing die (5.1) is equal to the diameter of the outlet end of the tapered hole (4.1.1).

5. According to claim 4, a submarine cable aluminum tape longitudinal wrapping device is characterized in that: The sizing die (5.1) and the tapered hole (4.1.1) are arranged coaxially.

6. The aluminum tape longitudinal wrapping device for submarine cables according to claim 1, characterized in that: The shaping unit (5) further comprises a double extruder head (5.2), and the double extruder head (5.2) is used to simultaneously extrude and shape the HDPE and semi-conductive sheath layers on the outer layer of the semi-finished cable (1).

7. The aluminum tape longitudinal wrapping device for submarine cables according to claim 6, characterized in that: A hot melt glue gun (5.3) is also provided between the double extruder head (5.2) and the sizing die (5.1), and a plurality of the hot melt glue guns (5.3) are provided, and the plurality of hot melt glue guns (5.3) are evenly arranged in an array along the circumference of the semi-finished cable (1).

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