Preparation process of low-smoke halogen-free heat-resistant environment-friendly medium-voltage cable

Abstract

The invention relates to the technical field of cable manufacturing, in particular to a low-smoke halogen-free heat-resistant environment-friendly medium-voltage cable preparation process, which comprises the following steps: S1, twisting; s2, extruding an insulating layer; s3, wrapping a waterproof layer; s4, armoring is carried out; s5, wrapping an outer sheath; s6, cabling and packaging; in the step S3, the waterproof tape is wound on the conductor by using a wrapping device; the wrapping device comprises a base, a first gear ring is rotatably inserted into the outer wall of the base, and a mounting frame is welded to the outer wall of the first gear ring in the diameter direction. Through arrangement of a linkage frame, when wrapping is completed, a motor is controlled to stop suddenly, a balancing weight loses the centrifugal force effect and moves and resets under the effect of a spring, a material stirring rod drives a waterproof belt to be away from a conductor, and meanwhile under the effect of a first rack and a second gear ring, the linkage frame drives an electric heating wire to rotate clockwise; and the elastic sheet can be used for shifting the cut-off part of the waterproof belt to the conductor, so that the sealing effect is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of cable manufacturing, and in particular relates to a preparation process for a low-smoke, halogen-free, heat-resistant and environment-friendly medium-voltage cable. Background Art

[0002] When manufacturing cables, a waterproof layer needs to be wrapped around the outside of the insulation layer to prevent moisture from entering the cable while maintaining the electrical properties of the cable, thereby avoiding moisture erosion of the conductor and effectively extending the service life of the cable.

[0003] However, in the prior art, when wrapping the waterproof tape, it is first necessary to manually wrap the waterproof tape around the conductor, and then the equipment can automatically wrap it. Moreover, after the cable wrapping is completed, the waterproof tape needs to be cut manually, which greatly affects the wrapping efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, comprising the following steps: S1, twisting; S2, extruding an insulating layer; S3, wrapping a waterproof layer; S4, armoring; S5, wrapping an outer sheath; S6, cable packaging; In step S3, a waterproof tape is wrapped around the conductor using a wrapping device; The wrapping device comprises a base, an outer wall of the base is rotatably plugged with a gear ring 1, an outer wall of the gear ring 1 is welded with a mounting bracket along the diameter direction, and a through hole for accommodating the conductor to pass through is reserved at the center of the mounting bracket. A counterweight block is slidably plugged with a counterweight block on the outer wall of one end of the mounting bracket, a material removing rod is welded on the outer wall of the counterweight block close to the center of the gear ring 1, a material guide groove is provided on the outer wall of the end of the material removing rod away from the counterweight block, and a limiting groove is provided on the right outer wall of the material guide groove, and a bracket is welded on the outer wall of the base, and a tubular linkage bracket is rotatably plugged with the outer wall of the bracket through a slip ring electrical part, the linkage bracket and the gear ring are coaxially distributed, a connecting column is welded on the outer wall of one end of the linkage bracket close to the gear ring 1, the connecting column passes through the mounting bracket, the connecting column is adapted to the limiting groove, a gear ring 2 is welded on the end wall of the connecting column, and an electric heating wire is arranged between the gear ring 2 and the linkage bracket.

[0006] In the above-mentioned low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, a motor is welded on the outer wall of the base, a gear is welded on the main shaft of the motor, and the gear is meshed with a gear ring.

[0007] In the above-mentioned low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, a magnet is slidably inserted on the left inner wall of the material guide trough, and the magnet can be adsorbed on the inner wall of the material guide trough. A stopper 1 is welded on the inner wall of the mounting frame, and the stopper 1 is adapted to the magnet.

[0008] In the above-mentioned low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, a spring piece is welded on the outer wall of the connecting column, and the spring piece points to the center of the first gear ring.

[0009] In the above-mentioned low-smoke, halogen-free, heat-resistant, and environmentally friendly medium-voltage cable preparation process, a spring is welded between the outer wall of the counterweight block and the outer wall of the mounting frame, and a rack 1 is welded on the bottom outer wall of the counterweight block, and the rack 1 and the gear ring 2 are meshed with each other.

[0010] In the above-mentioned low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, a loading wheel is rotatably connected to the outer wall of the mounting frame via a quick-release joint, a waterproof belt is wrapped around the outer wall of the loading wheel, and the free end of the waterproof belt passes through the material guide groove.

[0011] In the above-mentioned low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, a floating block is slidably inserted on the outer wall of the mounting frame away from the counterweight block, and avoidance grooves are provided on the outer walls of the counterweight block and the floating block.

[0012] In the above-mentioned low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, a supporting rod is welded on the outer wall of the floating block close to the center of the gear ring, and the ends of the supporting rod and the material pusher rod are both arc-shaped and compatible with the conductor. The ends of the supporting rod and the material pusher rod are both provided with clamping wheels, and a rack 2 is welded on the top outer wall of the floating block, and the rack 2 is meshed with the gear ring 2.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The counterweight block is set so that under the action of centrifugal force, the counterweight block drives the material-moving rod to approach the conductor, and the end of the material-moving rod can squeeze the waterproof tape to fit the outer wall of the conductor, and then cooperate with the gear ring to drive the feeding wheel to rotate around the conductor, thereby achieving the effect of automatic winding, without the need for workers to perform manual preliminary winding, which greatly improves the work efficiency, and when the connecting column slides into the limiting groove, the inner wall of the limiting groove squeezes the spring piece to deflect, so that the spring piece abuts against the electric heating wire, so that under the action of heat transfer, the spring piece can heat the waterproof tape in the material guide groove after heating, so that it melts to a certain extent and will not be directly cut off by the electric heating wire, thereby increasing the adhesion of the waterproof tape, avoiding the loosening of the waterproof tape after winding, and improving the winding effect; 2. Through the linkage frame, when the wrapping is completed, the motor is controlled to stop suddenly, so that the counterweight block loses the centrifugal force and moves to reset under the action of the spring, so that the material-moving rod drives the waterproof belt away from the conductor. At the same time, under the action of rack one and gear ring two, the linkage frame drives the heating wire to rotate clockwise, so that the heating wire intersects with the waterproof belt and cuts it off, and the spring sheet can push the cut part of the waterproof belt toward the conductor to achieve a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the base of the present invention.

[0016] Figure 3 It is a three-dimensional schematic diagram of the gear ring of the present invention.

[0017] Figure 4 It is a three-dimensional schematic diagram of the counterweight block and the floating block of the present invention.

[0018] Figure 5 It is a three-dimensional schematic diagram of the linkage frame of the present invention.

[0019] Figure 6 It is a cross-sectional view of the initial state of the counterweight block and the linkage frame of the present invention.

[0020] Figure 7 It is a three-dimensional schematic diagram of the working state of the overall structure of the present invention.

[0021] Figure 8 It is a cross-sectional view of the counterweight block and linkage frame of the present invention in working state.

[0022] In the figure: 1. base; 11. bracket; 2. gear ring 1; 21. mounting frame; 211. block 1; 22. feeding wheel; 221. waterproof belt; 3. counterweight; 31. spring; 32. material pusher rod; 321. clamping wheel; 322. material guide groove; 323. limit groove; 33. rack 1; 34. magnet; 4. linkage frame; 41. connecting column; 411. spring; 42. gear ring 2; 43. heating wire; 5. floating block; 51. supporting rod; 52. rack 2; 53. avoidance groove; 8. motor; 81. gear; 9. conductor. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] See also Figure 1-Figure 8 The present invention provides a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, including the following steps: S1, twisting; S2, extruding an insulating layer; S3, wrapping a waterproof layer; S4, armoring; S5, wrapping an outer sheath; S6, cable packaging; In step S3, a wrapping device is used to wrap the waterproof tape 221 around the conductor 9; The wrapping device includes a base 1, on the outer wall of the base 1, a gear ring 2 is rotatably plugged, on the outer wall of the gear ring 2, a mounting frame 21 is welded along the diameter direction, a through hole for accommodating the conductor 9 to pass through is reserved at the center of the mounting frame 21, a counterweight 3 is slidably plugged on the outer wall of one end of the mounting frame 21, a material shifting rod 32 is welded on the outer wall of the counterweight 3 close to the center of the gear ring 2, a material guide groove 322 is provided on the outer wall of the end of the material shifting rod 32 away from the counterweight 3, and a limiting groove 323 is provided on the right outer wall of the material guide groove 322, a bracket 11 is welded on the outer wall of the base 1, a tubular linkage frame 4 is rotatably plugged on the outer wall of the bracket 11 through a slip ring electrical component, the linkage frame 4 is coaxially distributed with the gear ring 2, a connecting column 41 is welded on the outer wall of the end of the linkage frame 4 close to the gear ring 2, the connecting column 41 penetrates the mounting frame 21, and connects The column 41 is adapted to the limiting groove 323, and a gear ring 2 42 is welded on the end wall of the connecting column 41, and an electric heating wire 43 is arranged between the gear ring 2 42 and the linkage frame 4, a motor 8 is welded on the outer wall of the base 1, and a gear 81 is welded on the main shaft of the motor 8, and the gear 81 is meshed with the gear ring 2, and a magnet 34 is slidably inserted on the left inner wall of the guide groove 322, and the magnet 34 can be adsorbed on the inner wall of the guide groove 322, and a stopper 211 is welded on the inner wall of the mounting frame 21, and the stopper 211 is adapted to the magnet 34, and a spring 411 is welded on the outer wall of the connecting column 41, and the spring 411 points to the center of the gear ring 2, and a spring 31 is welded between the outer wall of the counterweight block 3 and the outer wall of the mounting frame 21, and a rack 33 is welded on the bottom outer wall of the counterweight block 3, and the rack 33 is meshed with the gear ring 2 42.

[0026] A tubular linkage frame 4 is rotatably plugged into the outer wall of the bracket 11 through a slip ring electrical component. The stator part of the slip ring is fixed on the bracket 11, and the rotor part of the slip ring is connected to the linkage frame 4, so that the heating wire 43 is powered during the rotation of the linkage frame 4. Slip ring power supply is a relatively mature existing technology and will not be elaborated here.

[0027] In the initial state, if Figure 6 As described above, under the action of the spring 31, the counterweight 3 is close to the center of the circle of the gear ring 2, and the material pushing rod 32 pushes the waterproof belt 221 away from the conductor 9. At the same time, under the meshing action of the rack 33 and the gear ring 42, the linkage frame 4 drives the heating wire 43 to rotate to the cutting position. At this time, the magnet 34 is not blocked by the block 211, so that the magnet 34 can be adsorbed on the inner wall of the guide groove 322, so that the waterproof belt 221 in the guide groove 322 can be clamped, so as to prevent the waterproof belt 221 from falling off from the guide groove 322 when the gear ring 2 starts to rotate, resulting in the inability to wind smoothly.

[0028] The above content is further elaborated: when working, the conductor 9 is passed through the mounting frame 21 and the linkage frame 4 and then fixed on the winding device, the motor 8 is started and the device is controlled to wind up the conductor 9. Under the meshing action of the gear 81 and the ring gear 2, the ring gear 2 drives the mounting frame 21 to rotate clockwise, so that under the action of centrifugal force, the counterweight block 3 compresses the spring 31 away from the conductor 9, so that the counterweight block 3 drives the material lever 32 to approach the conductor 9, and the material lever 32 drives the free end of the waterproof belt 221 to approach the conductor 9, and the material lever The end of 32 can squeeze the waterproof tape 221 to fit the outer wall of the conductor 9, and then cooperate with the gear ring 1 2 to drive the feeding wheel 22 to rotate around the conductor 9, thereby achieving the effect of automatic winding, without the need for workers to perform manual preliminary winding, which greatly improves the work efficiency. When the material lever 32 is about to abut against the conductor 9, the block 1 211 blocks the magnet 34, so that the magnet 34 is away from the guide groove 322, so that the waterproof tape 221 is released. At the same time, in the above process, the counterweight block 3 drives the gear ring 2 42 to rotate counterclockwise through the rack 1 33, as shown in FIG. Figure 8 As shown, at this time, the gear ring 2 42 drives the linkage frame 4 to rotate. When the linkage frame 4 drives the connecting column 41 to slide into the limiting groove 323 on the material-dispensing rod 32, the linkage frame 4 drives the electric heating wire 43 to rotate in the same direction as the gear ring 1 2, so that the electric heating wire 43 can avoid the waterproof belt 221, and when the connecting column 41 slides into the limiting groove 323, the inner wall of the limiting groove 323 squeezes the spring piece 411 to deflect, so that the spring piece 411 abuts against the electric heating wire 43, so that under the action of heat transfer, the spring piece 411 can heat the waterproof belt 221 in the guide groove 322 after heating. The heating process is performed to melt the waterproof tape 221 to a certain extent and prevent the waterproof tape 221 from being directly cut off by the electric heating wire 43, thereby increasing the adhesion of the waterproof tape 221 and preventing the waterproof tape 221 from loosening after being wound, thereby improving the winding effect. When the wrapping is completed, the motor 8 is controlled to stop suddenly, so that the counterweight 3 loses the centrifugal force and moves and resets under the action of the spring 31, so that the material removal rod 32 drives the waterproof tape 221 away from the conductor 9. At the same time, under the action of the rack 1 33 and the gear ring 2 42, the linkage frame 4 drives the electric heating wire 43 to rotate clockwise, so that the electric heating wire 43 intersects with the waterproof tape 221 and cuts it off.

[0029] Specifically, a loading wheel 22 is rotatably connected to the outer wall of the mounting frame 21 through a quick-release joint, a waterproof belt 221 is wrapped around the outer wall of the loading wheel 22, and the free end of the waterproof belt 221 passes through the material guide groove 322, a floating block 5 is slidably inserted into the outer wall of the mounting frame 21 on the side away from the counterweight block 3, and avoidance grooves 53 are provided on the outer walls of the counterweight block 3 and the floating block 5, a supporting rod 51 is welded on the outer wall of the floating block 5 close to the center of the gear ring 2, the ends of the supporting rod 51 and the material removing rod 32 are both arc-shaped and compatible with the conductor 9, and clamping wheels 321 are provided on the ends of the supporting rod 51 and the material removing rod 32, and a rack 2 52 is welded on the top outer wall of the floating block 5, and the rack 2 52 and the gear ring 2 42 are meshed with each other.

[0030] A loading wheel 22 is rotatably connected to the outer wall of the mounting frame 21 via a quick-release joint, so that the loading wheel 22 can be easily replaced.

[0031] In the initial state, if Figure 6 As shown, under the action of the second rack 52 and the second gear ring 42, the floating block 5 drives the supporting rod 51 away from the conductor 9, so as to avoid the connection column 41 and the heating wire 43.

[0032] To further elaborate on the above content: When wrapping, if Figure 8 As shown, rack 1 33 drives gear ring 2 42 to rotate, so that under the meshing action of gear ring 2 42 and rack 2 52, floating block 5 drives supporting rod 51 to approach conductor 9, so that material removal rod 32 and supporting rod 51 clamp conductor 9 from upper and lower sides respectively to prevent eccentric swing of conductor 9, thereby ensuring the winding effect, and at the same time, clamping wheel 321 can roll the winding part of conductor 9 to achieve a full circle effect.

[0033] The working principle and use process of the present invention are as follows: during operation, the conductor 9 is passed through the mounting frame 21 and the linkage frame 4 and then fixed on the winding device, the motor 8 is started and the device is controlled to wind up the conductor 9. Under the meshing action of the gear 81 and the gear ring 2, the gear ring 2 drives the mounting frame 21 to rotate clockwise, so that under the action of centrifugal force, the counterweight block 3 drives the material shifting rod 32 to approach the conductor 9, and the end of the material shifting rod 32 can squeeze the waterproof tape 221 to fit the outer wall of the conductor 9, and then cooperates with the gear ring 2 to drive the feeding wheel 22 to rotate around the conductor 9, thereby achieving the effect of automatic winding, without the need for workers to perform manual preliminary winding, which greatly improves the work efficiency. At the same time, in the above process, the counterweight block 3 drives the gear ring 2 42 to rotate counterclockwise through the rack 1 33, and the gear ring 2 42 drives the linkage frame 4 to rotate. When the linkage frame 4 drives the connecting column 41 to slide into the limiting groove 323 on the material shifting rod 32, the linkage frame 4 drives the electric heating wire 43 to move along the gear ring 2 The second gear ring 42 and the second rack 52 rotate in the same direction, so that the heating wire 43 can avoid the waterproof belt 221, and under the meshing action of the second gear ring 42 and the second rack 52, the floating block 5 drives the supporting rod 51 to approach the conductor 9, so that the material removal rod 32 and the supporting rod 51 clamp the conductor 9 from the upper and lower sides respectively, to prevent the conductor 9 from eccentric swinging, thereby ensuring the winding effect, and at the same time, the clamping wheel 321 can roll the winding part of the conductor 9 to achieve a full circle effect. When the wrapping is completed, the control motor 8 stops urgently, so that the counterweight block 3 loses the centrifugal force and moves and resets under the action of the spring 31, so that the material removal rod 32 drives the waterproof belt 221 away from the conductor 9. At the same time, under the action of the rack 1 33 and the second gear ring 42, the linkage frame 4 drives the heating wire 43 to rotate clockwise, so that the heating wire 43 intersects with the waterproof belt 221 and cuts it off, and the spring piece 411 can push the cut part of the waterproof belt 221 toward the conductor 9 to achieve a sealing effect.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable preparation process, characterized by: The process includes: S1, twisting; S2, extruding the insulation layer; S3, wrapping the waterproof layer; S4, armoring; S5, wrapping the outer sheath; S6, cable packaging; In step S3, a wrapping device is used to wrap the waterproof tape (221) around the conductor (9); The wrapping device comprises a base (1), a gear ring (2) is rotatably plugged into the outer wall of the base (1), a mounting frame (21) is welded to the outer wall of the gear ring (2) in the diameter direction, a through hole for accommodating the conductor (9) to pass through is reserved at the center of the mounting frame (21), a counterweight (3) is slidably plugged into the outer wall of one end of the mounting frame (21), a material shifting rod (32) is welded to the outer wall of the counterweight (3) on the side close to the center of the gear ring (2), a material guide groove (322) is provided on the outer wall of the end of the material shifting rod (32) away from the counterweight (3), and a limited opening is provided on the right outer wall of the material guide groove (322). A bracket (11) is welded on the outer wall of the base (1), a tubular linkage frame (4) is rotatably plugged into the outer wall of the bracket (11) via a slip ring electrical component, the linkage frame (4) is coaxially distributed with the gear ring one (2), a connecting column (41) is welded on the outer wall of one end of the linkage frame (4) close to the gear ring one (2), the connecting column (41) passes through the mounting frame (21), the connecting column (41) is matched with the limiting groove (323), the end wall of the connecting column (41) is welded with the gear ring two (42), and an electric heating wire (43) is arranged between the gear ring two (42) and the linkage frame (4).

2. A process for preparing a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable according to claim 1, characterized in that: A motor (8) is welded on the outer wall of the base (1), a gear (81) is welded on the main shaft of the motor (8), and the gear (81) is meshed with the gear ring 1 (2).

3. The process for preparing a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable according to claim 1, characterized in that: A magnet (34) is slidably inserted on the left inner wall of the material guide groove (322), and the magnet (34) can be adsorbed on the inner wall of the material guide groove (322). A stopper (211) is welded on the inner wall of the mounting frame (21), and the stopper (211) is compatible with the magnet (34).

4. The process for preparing a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable according to claim 1, characterized in that: A spring sheet (411) is welded on the outer wall of the connecting column (41), and the spring sheet (411) points to the center of the first gear ring (2).

5. The process for preparing a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable according to claim 1, characterized in that: A spring (31) is welded between the outer wall of the counterweight block (3) and the outer wall of the mounting frame (21), and a rack 1 (33) is welded on the outer wall of the bottom of the counterweight block (3). The rack 1 (33) and the gear ring 2 (42) are meshed with each other.

6. The process for preparing a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable according to claim 1, characterized in that: A loading wheel (22) is rotatably connected to the outer wall of the mounting frame (21) via a quick-release joint, a waterproof belt (221) is wound around the outer wall of the loading wheel (22), and a free end of the waterproof belt (221) passes through a material guide groove (322).

7. A process for preparing a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable according to claim 6, characterized in that: A floating block (5) is slidably inserted on the outer wall of the mounting frame (21) at a side away from the counterweight block (3), and avoidance grooves (53) are provided on the outer walls of the counterweight block (3) and the floating block (5).

8. The process for preparing a low-smoke, halogen-free, heat-resistant and environmentally friendly medium-voltage cable according to claim 7, characterized in that: A supporting rod (51) is welded to the outer wall of the floating block (5) on the side close to the center of the gear ring 1 (2); the ends of the supporting rod (51) and the material moving rod (32) are both arc-shaped and compatible with the conductor (9); the ends of the supporting rod (51) and the material moving rod (32) are both provided with a clamping wheel (321); a rack 2 (52) is welded to the outer wall of the top of the floating block (5); the rack 2 (52) and the gear ring 2 (42) are meshed with each other.

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