A cable insulation layer processing technology

Abstract

The present invention relates to the field of cable processing technology, and provides a cable insulation layer processing process, comprising the following steps: S1, an unwinding mechanism unwinds an inner core; S2, the inner core is cleaned on its surface by a cleaning device; S3, the inner core is coated with insulating material by a coating mechanism; S4, the inner core coated with insulating material is reeled in by a reeling mechanism; the step S2 comprises the following sub-steps: S21, a driving mechanism drives a brush drum to rotate to scrub the surface of the inner core; S22, the driving mechanism simultaneously drives an air blowing mechanism to alternately inhale and compress air, and during the air compression process, presses the air toward the surface of the inner core for cleaning. The present invention omits the steps of absorbing water and drying after water washing in the prior art by coordinating the directions of scrubbing and blowing, thereby greatly improving production efficiency; the brush drum can rotate, and since the inner core is in motion, the brush drum has both axial and circumferential motion relative to the inner core, resulting in a better scrubbing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of cable processing, in particular to a cable insulation layer processing technology. Background Art

[0002] In order to prevent the cable from short circuiting, leakage and other accidents during use, a layer of insulating material needs to be evenly wrapped around the outer surface of the inner core. This layer of insulating material is usually called an insulation layer.

[0003] The current existing cable insulation layer processing (wrapping or coating) process (for example, patent documents with publication numbers "CN111681840B" and "CN114864191A") generally releases the inner core through a reeling mechanism, and the inner core is coated with an insulation layer by a coating mechanism (the coating mechanism usually includes a coating mold, and the coating mold is connected to an extruder to inject molten insulation material into the coating mold), and then reeled by a reeling mechanism.

[0004] Because the inner core is prone to static electricity during processing, which attracts impurities and dust, the insulation layer and the inner core may not fit tightly together during the insulation coating process, affecting cable quality. Existing methods (such as patent publication number "CN112201413A") clean the inner core surface by brushing and then washing with water. However, the brush used in this prior art is fixed, resulting in poor cleaning effectiveness. Furthermore, the subsequent water washing steps require additional water absorption and drying, resulting in low production efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a cable insulation layer processing technology to solve the technical problems of poor brushing effect and low production efficiency in the prior art.

[0006] The embodiments of the present invention are achieved through the following technical solutions:

[0007] A cable insulation layer processing process includes the following steps: S1, an unwinding mechanism unwinds an inner core; S2, a cleaning device cleans the surface of the inner core; S3, a coating mechanism coats the inner core with an insulating material; S4, a winding mechanism winds up the inner core coated with the insulating material; step S2 includes the following sub-steps:

[0008] S21, driving the brush cylinder to rotate through the driving mechanism to brush the surface of the inner core;

[0009] S22. The driving mechanism simultaneously drives the blowing mechanism to alternately inhale and compress air, and during the compression process, presses the gas toward the surface of the inner core for blowing and cleaning.

[0010] Optionally, the blowing mechanism includes a driving frame, racks are provided on two opposite sides of the inner wall of the driving frame, an incomplete gear that can alternately mesh with the two racks is provided inside the driving frame, the incomplete gear is connected to a driving shaft, and the driving shaft is in transmission connection with the driving mechanism;

[0011] A piston cylinder is fixedly provided on the side surface of one end of the driving frame, a piston is provided inside the piston cylinder, a piston rod is connected to the piston plate, guide rods are provided at both ends of the driving frame, and guide seats that cooperate with the guide rods are fixedly provided on the side surfaces of both ends of the driving frame, and the piston rod is connected to the adjacent guide rods;

[0012] One end of the piston cylinder is provided with a first one-way air inlet and a first one-way air outlet, the other end of the piston cylinder is provided with a second one-way air inlet and a second one-way air outlet, and the top of the piston cylinder is provided with a blowing disk for blowing the surface of the inner core. The blowing disk is annular and has a cavity inside. The inner wall of the blowing disk is provided with a plurality of air nozzles connected to the cavity along the circumferential direction. The first one-way air outlet and the second one-way air outlet are connected to the cavity through a blowing pipe.

[0013] Optionally, a dust collecting box is provided on one side of the piston cylinder, the dust collecting box is provided with an dust inlet and an air suction port connected to the interior, a filter is provided inside the dust collecting box, an dust inlet is provided on one side of the dust collecting box, and the dust inlet and the air suction port are separated by the filter; the first one-way air inlet or the second one-way air inlet is connected to the air suction port, and a dust collecting cover is provided on the outside of the blowing plate, and the dust collecting cover is connected to the ash inlet through an dust suction pipe.

[0014] Optionally, the filter element is a filter cloth.

[0015] Optionally, the air nozzle is arranged obliquely toward one end of the inner core.

[0016] Optionally, the driving mechanism includes a driving motor, a main shaft, a small spur gear and a large spur gear, the main shaft is arranged below the brush cylinder and one end is connected to the driving motor, the large spur gear is arranged on the outer wall of the brush cylinder, and the small gear is arranged on the main shaft and meshes with the large gear;

[0017] A first transmission bevel gear is provided on one end of the main shaft close to the driving shaft, and a second transmission bevel gear meshing with the second transmission blowing gear is provided on the driving shaft.

[0018] Optionally, a brush sleeve with bristles on the inner wall is provided inside the brush cylinder, and one end of the brush sleeve is connected to the end surface of the brush cylinder.

[0019] Optionally, a sliding hole is provided on the guide seat, and a linear bearing cooperating with the guide rod is provided in the sliding hole.

[0020] Optionally, the coating mechanism includes a coating box, the interior of the coating box is provided with a coating cavity for accommodating insulating material, and one side of the coating cavity is provided with a feed channel for connecting to the extruder; one end of the coating box is provided with an inlet connected to the cavity, and the other end is provided with an outlet connected to the cavity, and a conical guide section is provided between the outlet and the side wall of the coating cavity, and the diameter of the conical guide section near the inlet end is larger than the diameter near the outlet end.

[0021] The present invention has at least the following advantages and beneficial effects:

[0022] 1. In the present invention, the directions of brushing and blowing are coordinated, that is, blowing replaces the water washing in the prior art, eliminating the steps of absorbing water and blowing dry after water washing, thereby greatly improving production efficiency.

[0023] 2. The brush barrel of the present invention can rotate, and since the inner core is in motion, the brush barrel moves in both the axial direction and the circumferential direction relative to the inner core, thus achieving a better scrubbing effect than the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of a cable insulation layer processing process provided in Example 1 of the present invention;

[0026] Figure 2 for Figure 1 A magnified view of point A;

[0027] Figure 3 for Figure 2 Partial cross-sectional view of CC;

[0028] Figure 4 for Figure 1 Enlarged view of point B;

[0029] Figure 5 This is a schematic cross-sectional view of the blowing disk of Example 1 perpendicular to the axis direction;

[0030] Figure 6 is an enlarged view of the covering mechanism;

[0031] Figure 7 This is a schematic diagram of the connection structure for the second ash collection box;

[0032] Icons: 1-unwinding mechanism, 2-wrapping mechanism, 201-wrapping box, 202-feeding channel, 203-inlet, 204-outlet, 205-conical guide section, 3-winding mechanism, 4-blowing mechanism, 401-driving frame, 401a-rack, 401b-guide rod, 402-incomplete gear, 403-driving shaft, 404-piston cylinder, 404a-first one-way air inlet, 404b-first one-way air outlet, 404c-second one-way air inlet, 404d-second one-way air outlet, 405-piston rod, 406-piston plate, 407 -blowing plate, 407a-cavity, 408-air nozzle, 5-driving mechanism, 501-driving motor, 502-main shaft, 503-small spur gear, 504-large spur gear, 6-brush cylinder, 601-brush cover, 602-bristles, 7-guide seat, 8-brushing support seat, 9-blowing support seat, 10-coating support seat, 11-ash collecting box, 1101-air suction port, 1102-ash inlet, 1103-filter element, 12-first transmission bevel gear, 13-second transmission bevel gear, 14-bottom plate, 15-ash suction pipe, 16-air blowing pipe, 17-ash collecting cover. DETAILED DESCRIPTION

[0033] Example 1

[0034] A cable insulation layer processing process includes the following steps: S1, unwinding mechanism 1 unwinds an inner core (as shown); S2, the inner core is cleaned by a cleaning device; S3, the inner core is coated with insulating material by a coating mechanism 2; S4, the inner core coated with insulating material is reeled up by a reeling mechanism 3. It should be understood that the unwinding mechanism 1 and the reeling mechanism 3 can be the unwinding mechanism 1 and the reeling mechanism 3 provided in the prior art, that is, the rollers are rotated manually or by a motor to unwind or reel up the inner core. In this embodiment, all components are fixed to a base plate 14, that is, the base plate 14 supports each component.

[0035] The present invention is improved on the basis of the existing technology. Specifically, the above step S2 in the present invention includes the following sub-steps:

[0036] S21, driving the brush cylinder 6 to rotate through the driving mechanism 5 to brush the surface of the inner core;

[0037] S22, the driving mechanism 5 simultaneously drives the blowing mechanism 4 to alternately inhale and compress air, and during the compression process, presses the gas toward the surface of the inner core for washing.

[0038] It is worth noting that the present invention coordinates the directions of brushing and blowing, replacing the water washing of the prior art with blowing, eliminating the need for water absorption and drying after water washing, thereby significantly improving production efficiency. The brush barrel 6 of the present invention is rotatable, and because the inner core is in motion, the brush barrel 6 moves both axially and circumferentially relative to the inner core, resulting in a better brushing effect than the prior art. The brushing action of the brush barrel 6 and the blowing action of the air blowing mechanism 4 are driven by the same drive mechanism 5, thus conserving resources.

[0039] Please refer to Figure 1-5 The blowing mechanism 4 includes a drive frame 401. Racks 401a are provided on opposite sides of the inner wall of the drive frame 401. An incomplete gear 402 is provided inside the drive frame 401, which can alternately mesh with the two racks 401a. The incomplete gear 402 is connected to a drive shaft 403, which is in transmission connection with the drive mechanism 5. Guide rods 401b are provided at both ends of the drive frame 401, and guide seats 7 are fixed to the side surfaces of both ends of the drive frame 401, which cooperate with the guide rods 401b. The guide seats 7 support the drive frame 401 and provide guidance for the guide rods 401b. On this basis, when the drive mechanism 5 is activated, it drives the incomplete gear 402 to rotate. As the incomplete gear 402 rotates, it alternately meshes with the two opposite racks 401a, thereby driving the drive frame 401 to move back and forth along the line connecting the two ends.

[0040] Furthermore, a sliding hole is provided on the guide seat 7, and a linear bearing cooperating with the guide rod 401b is provided in the sliding hole, so that the sliding of the guide rod 401b is smoother, that is, the back and forth movement of the driving frame 401 is smoother.

[0041] A piston cylinder 404 is fixedly provided on the side of one end of the driving frame 401, and the piston cylinder 404 is supported by a purge support seat 9, and the purge support seat 9 is fixed on the base plate 14. A piston is provided inside the piston cylinder 404, and a piston plate 406 is connected to a piston rod 405, and the piston rod 405 is connected to the adjacent guide rod 401b. Therefore, when the driving frame 401 moves back and forth along the direction of the line connecting the two ends, it will drive the piston rod 405 to move, and the piston rod 405 drives the piston plate 406 to move back and forth in the piston cylinder 404.

[0042] refer to Figure 4One end of the piston cylinder 404 is provided with a first one-way air inlet 404a and a first one-way air outlet 404b, and the other end of the piston cylinder 404 is provided with a second one-way air inlet 404c and a second one-way air outlet 404d. It should be understood that the first one-way air inlet 404a and the second one-way air inlet 404c can only take in air, while the first one-way air outlet 404b and the second one-way air outlet 404d can only take out air. Specifically, in this embodiment, the first one-way air inlet 404a is provided on the lower left side of the piston cylinder 404, the first one-way air outlet 404b is provided on the upper left side of the piston cylinder 404, the second one-way air inlet 404c is provided on the right end surface of the piston cylinder 404, and the second one-way air outlet 404d is provided on the upper right side of the piston cylinder 404.

[0043] On the basis of the above, a blowing disk 407 for blowing the inner core surface is provided on the top of the piston cylinder 404. The blowing disk 407 is annular and has a cavity 407a inside. The inner wall of the blowing disk 407 is provided with a plurality of air nozzles 408 connected to the cavity 407a along the circumferential direction. The first one-way air outlet 404b and the second one-way air outlet 404d are connected to the cavity 407a through the blowing pipe 16.

[0044] It is worth noting that when the piston plate 406 moves to the left, air is taken in through the second one-way air inlet 404c at the right end, and the gas in the piston cylinder 404 is pressed into the air blowing plate 407 from the first one-way air outlet 404b at the left end, and is ejected from the air nozzle 408 to purge the surface of the inner core; when the piston plate 406 moves to the right, air is taken in through the first one-way air inlet 404a at the left end, and the gas in the piston cylinder 404 is pressed into the air blowing plate 407 from the second one-way air outlet 404d at the right end, and is ejected from the air nozzle 408 to purge the surface of the inner core. It can be seen that in the present invention, the surface of the inner core is purgeable regardless of whether the piston plate 406 moves to the left or the right, that is, the purge action is continuous.

[0045] Furthermore, the air nozzle 408 of this embodiment is arranged tilted toward one end of the inner core, that is, the air jet direction of the air nozzle 408 is not perpendicular to the axial direction of the inner core. When blowing, impurities or dust can be blown in the direction of movement of the inner core or in the opposite direction of the movement direction, making the blowing effect better.

[0046] On the basis of the above, the driving mechanism 5 of this embodiment includes a driving motor 501, a main shaft 502, a small spur gear 503 and a large spur gear 504. The main shaft 502 is arranged below the brush cylinder 6 and one end is connected to the driving motor 501. The large spur gear 504 is arranged on the outer wall of the brush cylinder 6. The brush cylinder 6 is supported by a brush support seat 8. The brush support seat 8 is fixed on the bottom plate 14. The small gear is arranged on the main shaft 502 and meshes with the large gear. When in use, the main shaft 502 is driven to rotate by the driving motor 501. The small spur gear 503 and the large spur gear 504 work together to slow down the output speed of the driving motor 501 and act on the brush cylinder 6, so that the brush cylinder 6 rotates to brush the surface of the inner core.

[0047] In this embodiment, the interior of the brush barrel 6 is provided with a brush sleeve 601 with bristles 602 on the inner wall. One end of the brush sleeve 601 is connected to the end face of the brush barrel 6. Specifically, a flange can be provided at one end of the brush sleeve 601, and the flange is fixed to the end face of the brush barrel 6 by screws. Such a configuration facilitates the replacement of the bristles 602.

[0048] On the basis of the above, the transmission connection between the drive shaft 403 and the drive mechanism 5 is as follows: a first transmission bevel gear 12 is provided at one end of the main shaft 502 close to the drive shaft 403, and a second transmission bevel gear 13 is provided on the drive shaft 403 which is meshed with the second transmission blowing gear. When the main shaft 502 rotates and drives the brush cylinder 6 to rotate, it can synchronously drive the drive shaft 403 to rotate, that is, when the drive mechanism 5 drives the brush cylinder 6 to brush the surface of the inner core, it also synchronously drives the blowing mechanism 4 to blow the surface of the inner core.

[0049] Please refer to Figure 6 The coating mechanism 2 of this embodiment includes a coating box 201, which is supported by a coating support seat 10, and the coating support seat 10 is fixed on the bottom plate 14. A coating cavity for accommodating insulating material is provided inside the coating box 201, and a feed channel 202 for connecting to an extruder (not shown) is provided on one side of the coating cavity. When working, the insulating material extruded by the extruder enters the coating cavity through the feed channel 202 and fills the interior of the coating cavity.

[0050] The coating box 201 has an inlet 203 at one end, communicating with the cavity 407a, and an outlet 204 at the other end, communicating with the cavity 407a. It should be understood that the inner core enters the coating cavity through the inlet 203, and after the insulating material wraps around the surface of the inner core within the coating cavity, it exits through the outlet 204. Specifically, a tapered guide section 205 is provided between the outlet 204 and the sidewall of the coating cavity. The diameter of the tapered guide section 205 near the inlet 203 is larger than the diameter near the outlet 204. The tapered guide section 205 facilitates the initial passage of the inner core through the outlet 204 and its exit. Furthermore, it is readily understood that the diameter of the outlet 204 is set according to the desired thickness of the insulating layer. As the inner core wrapped in insulating material passes through the outlet 204, the outlet 204 can scrape off excess insulating material.

[0051] Example 2

[0052] Please refer to Figure 7 This embodiment is further optimized on the basis of the first embodiment. Specifically, this embodiment provides an ash box 11 beside the piston cylinder 404. The ash box 11 is provided with an ash inlet 1102 and an air intake 1101 connected to the interior. The second one-way air inlet 404c is connected to the air intake 1101. An ash hood 17 is provided on the outside of the air blowing plate 407. The ash hood 17 is connected to the ash inlet 1102 through the ash suction pipe 15. It is worth noting that with such a configuration, when the piston plate 406 moves to the left, the gas in the left cavity of the piston cylinder 404 is pressed into the air blowing plate 407 from the first one-way air outlet 404b at the left end, and is ejected from the air nozzle 408 to purge the surface of the inner core. At the same time, the second one-way air inlet 404c at the right end of the piston cylinder 404 takes in air, sucking the impurities and dust in the ash hood 17 into the interior of the ash box 11, greatly reducing the overflow of dust.

[0053] It is easy to understand that in other examples of the present invention, the dust box 11 can also be connected to the suction port 1101 of the first one-way air inlet 404a. On this basis, the impurities and dust inside the dust collecting cover 17 are sucked into the dust box 11 during the process of the piston plate 406 moving to the right.

[0054] In this embodiment, a filter element 1103 is provided inside the ash box 11, and an ash inlet 1102 is provided on one side of the ash box 11, and the ash inlet 1102 is separated from the air intake 1101 by the filter element 1103. It is easy to understand that such a setting can prevent impurities and dust from entering the interior of the piston cylinder 404. Specifically, the filter element 1103 is a filter cloth.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cable insulation layer processing process, comprising the following steps: S1, the unwinding mechanism (1) unwinds the inner core; S2, the inner core is cleaned on its surface by a cleaning device; S3, the inner core is coated with insulating material by a coating mechanism (2); S4, the inner core coated with insulating material is rewound by a rewinding mechanism (3); characterized in that the step S2 includes the following sub-steps: S21, driving the brush cylinder (6) to rotate through the driving mechanism (5) to brush the surface of the inner core; S22, the driving mechanism (5) simultaneously drives the blowing mechanism (4) to alternately inhale and compress air, and during the compression process, presses the air toward the surface of the inner core for washing; The blowing mechanism (4) includes a driving frame (401), racks (401a) are provided on two opposite sides of the inner wall of the driving frame (401), an incomplete gear (402) that can alternately mesh with the two racks (401a) is provided inside the driving frame (401), the incomplete gear (402) is connected to a driving shaft (403), and the driving shaft (403) is in transmission connection with the driving mechanism (5); A piston cylinder (404) is fixedly provided on the side surface of one end of the driving frame (401), a piston is provided inside the piston cylinder (404), a piston plate (406) is connected to a piston rod (405), guide rods (401b) are provided at both ends of the driving frame (401), and guide seats (7) that cooperate with the guide rods (401b) are fixedly provided on the side surfaces of both ends of the driving frame (401), and the piston rod (405) is connected to the adjacent guide rod (401b); One end of the piston cylinder (404) is provided with a first one-way air inlet (404a) and a first one-way air outlet (404b), and the other end of the piston cylinder (404) is provided with a second one-way air inlet (404c) and a second one-way air outlet (404d). The top of the piston cylinder (404) is provided with a blowing disk (407) for blowing and cleaning the surface of the inner core. The blowing disk (407) is annular and has a cavity (407a) inside. The inner wall of the blowing disk (407) is provided with a plurality of air nozzles (408) connected to the cavity (407a) along the circumferential direction. The first one-way air outlet (404b) and the second one-way air outlet (404d) are connected to the cavity (407a) through the blowing pipe (16). A dust collecting box (11) is provided on one side of the piston cylinder (404), and the dust collecting box (11) is provided with an dust inlet (1102) and an air intake (1101) connected to the inside. A filter element (1103) is provided inside the dust collecting box (11), and an dust inlet (1102) is provided on one side of the dust collecting box (11), and the dust inlet (1102) and the air intake (1101) are separated by the filter element (1103); the first one-way air inlet (404a) or the second one-way air inlet (404c) is connected to the air intake (1101), and a dust collecting cover (17) is provided on the outside of the air blowing plate (407), and the dust collecting cover (17) is connected to the dust inlet (1102) through the dust suction pipe (15).

2. The cable insulation layer processing process according to claim 1, characterized in that: The filter element (1103) is a filter cloth.

3. The cable insulation layer processing process according to claim 1 or 2, characterized in that: The air nozzle (408) is arranged obliquely toward one end of the inner core.

4. The cable insulation layer processing process according to claim 1 or 2, characterized in that: The driving mechanism (5) comprises a driving motor (501), a main shaft (502), a small spur gear (503) and a large spur gear (504); the main shaft (502) is arranged below the brush barrel (6) and one end of the main shaft is connected to the driving motor (501); the large spur gear (504) is arranged on the outer wall of the brush barrel (6); and the small gear is arranged on the main shaft (502) and meshes with the large gear. A first transmission bevel gear (12) is provided at one end of the main shaft (502) close to the driving shaft (403), and a second transmission bevel gear (13) meshing with the second transmission blowing gear is provided on the driving shaft (403).

5. The cable insulation layer processing process according to claim 1 or 2, characterized in that: The brush cylinder (6) is provided with a brush sleeve (601) having bristles (602) on its inner wall, and one end of the brush sleeve (601) is connected to the end surface of the brush cylinder (6).

6. The cable insulation layer processing process according to claim 1 or 2, characterized in that: The guide seat (7) is provided with a sliding hole, and a linear bearing matched with the guide rod (401b) is provided in the sliding hole.

7. The cable insulation layer processing process according to claim 1 or 2, characterized in that: The coating mechanism (2) comprises a coating box (201), wherein a coating cavity for accommodating insulating material is provided inside the coating box (201), and a feed channel (202) for connecting to an extruder is provided on one side of the coating cavity; an inlet (203) communicating with the cavity (407a) is provided at one end of the coating box (201), and an outlet (204) communicating with the cavity (407a) is provided at the other end; a tapered guide section (205) is provided between the outlet (204) and the side wall of the coating cavity, and the diameter of the tapered guide section (205) at the end close to the inlet (203) is larger than the diameter at the end close to the outlet (204).

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