Processing device for fireproof cable with metal sheath

Abstract

A fireproof cable processing device with a metal sheath disclosed by the present invention comprises a base frame and a rotation auxiliary mechanism, the rotation auxiliary mechanism comprises a cylinder arranged in the middle of the base frame, and the cylinder is composed of a first movable sleeve, a telescopic cover and a second movable sleeve. The first movable sleeve, the telescopic cover and the second movable sleeve are sequentially arranged from top to bottom, the two-way backflow coating mechanism comprises a first transverse plate and two fixing sleeves, the first transverse plate is fixedly arranged on the inner surface of the base frame and located above the first movable sleeve, and the two fixing sleeves are both arranged in the middle of the first movable sleeve; the two fixing sleeves correspond to each other in position; and an intermittent synchronous blowing mechanism. By arranging the two-way backward flow coating mechanism and the rotating auxiliary mechanism, the two material injection barrels are driven by the intermittently rotating three-way pipe to perform up-down position exchange, so that the fireproof coating is still in a flowing state even if the fireproof coating is not coated, and local curing of the fireproof coating is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable processing, and specifically to a processing device for a fire-proof cable with a metal sheath. Background Technique

[0002] A cable is usually a cable in the form of a rope formed by twisting several or several groups of wires. The wires in each group are insulated from each other and are often twisted around a center. The whole is covered with a highly insulating covering layer. The cable has the characteristics of conducting electricity inside and being insulated outside. A metal sheath will be provided inside the cable, and the most important function of the metal sheath is to prevent water and thermal stability of zero-sequence short-circuit current. Secondly, it also has functions such as sealing, anti-corrosion, mechanical protection, and shielding. During the cable processing and production process, a layer of fire-proof coating is generally applied to the outside of the cable to improve the fire-proof performance of the cable. And the existing cable processing devices generally directly apply the coating to the outside of the cable. However, during the coating process, the fire-proof coating is not sprayed evenly, and the thickness of the fire-proof coating sprayed on the outside of the cable is different, resulting in the surface of the cable not being smooth, causing the decline of the fire-proof performance of the cable and being unable to meet the normal use requirements, causing unnecessary trouble to the production and processing of the cable.

[0003] In view of the above problems, the Chinese Patent Network discloses a patent document with the publication number of CN114093579A. By setting a limiting processing mechanism to spray and process the fire-proof coating on the fire-proof cable, the cable is coated with the fire-proof coating through the inner side of the annular sleeve of the limiting processing mechanism. At the same time, the annular sleeve is rotated inside the limiting sleeve, so that the fire-proof coating coated on the outside of the cable is more uniform. The structure of this cable processing device is reasonable and well-organized, reducing the unnecessary trouble caused by uneven spraying of the fire-proof coating during cable processing, and avoiding the problem that the existing cable processing devices generally directly apply the coating to the outside of the cable. However, during the coating process, the fire-proof coating is not sprayed evenly, and the thickness of the fire-proof coating sprayed on the outside of the cable is different, resulting in the surface of the cable not being smooth, causing the decline of the fire-proof performance of the cable and being unable to meet the normal use requirements. In this solution, since the fire-proof coating is only in a flowing state during spraying after being added and does not flow when not spraying, the fire-proof coating may be locally cured, affecting the normal progress of the coating work. Therefore, a processing device for a fire-proof cable with a metal sheath is provided. Summary of the Invention

[0004] The purpose of the present invention is to provide a processing device for a fire-proof cable with a metal sheath to solve the problem proposed in the above background technique that since the fire-proof coating is only in a flowing state during spraying after being added and does not flow when not spraying, the fire-proof coating may be locally cured, affecting the normal progress of the coating work.

[0005] To achieve the above object, the specific technical solution of the present invention is as follows: A processing device for a fire-resistant cable with a metal sheath, comprising a base frame and a rotary auxiliary mechanism. The rotary auxiliary mechanism includes a cylinder body arranged in the middle of the base frame, and the cylinder body is composed of a first movable sleeve, a telescopic cover, and a second movable sleeve. The first movable sleeve, the telescopic cover, and the second movable sleeve are arranged in sequence from top to bottom. It also includes:

[0006] A two-way backflow coating mechanism for coating the fire-resistant cable in cooperation with the provided rotary auxiliary mechanism. The two-way backflow coating mechanism includes a first cross plate fixedly arranged on the inner surface of the base frame and above the first movable sleeve, and two fixed sleeves both arranged in the middle of the first movable sleeve. The two fixed sleeves are correspondingly positioned.

[0007] An intermittent synchronous blowing mechanism for drying the fire-resistant coating in cooperation with the provided rotary auxiliary mechanism.

[0008] Preferably, the first movable sleeve, the telescopic cover, and the second movable sleeve are coaxial. One end of the telescopic cover is connected to the first movable sleeve, and the other end of the telescopic cover is connected to the second movable sleeve. A first gear ring is fixedly arranged in the middle of the outer surface of the first movable sleeve, and a second gear ring is fixedly arranged in the middle of the outer surface of the second movable sleeve. A first bracket is arranged outside the first movable sleeve and at the position of the first gear ring, and a second bracket is arranged outside the second movable sleeve and at the position of the second gear ring.

[0009] Preferably, a plurality of first supporting wheels arranged in an annular and equally spaced manner are installed inside the first bracket. The first movable sleeve rotates relative to the first bracket, and the first supporting wheels are arranged in a rolling manner with the first movable sleeve. A plurality of second supporting wheels arranged in an annular and equally spaced manner are installed inside the second bracket. The second movable sleeve rotates relative to the second bracket, and the second supporting wheels are arranged in a rolling manner with the second movable sleeve. The cross-sections of the second supporting wheels and the first supporting wheels are both designed in an I-shaped structure.

[0010] Preferably, the rotary auxiliary mechanism further includes a fixed frame arranged at the bottom of the base frame, and two centering guide rods are fixedly arranged on both sides of the upper surface of the fixed frame. The upper ends of the centering guide rods sequentially penetrate through the second bracket and the first bracket. The second bracket slides relative to the centering guide rods, and the first bracket slides relative to the centering guide rods. The first bracket and the second bracket are elastically arranged through a spring. A first rack is fixedly arranged on the lower surface of the first bracket, and a second rack is fixedly arranged on the upper surface of the second bracket. The second rack is arranged opposite to the first rack. A driving gear is arranged between the second rack and the first rack, and both the second rack and the first rack are meshed with the driving gear. A driving rod is fixedly arranged in the middle of the outer end of the driving gear, and the driving rod is rotatably arranged with the base frame through a bearing.

[0011] Preferably, the rotation assisting mechanism further includes a wave ring fixedly arranged in the middle of the upper end of the first movable sleeve, and a bearing bracket fixedly arranged on one side of the inner surface of the base frame. A flat key drive shaft is rotatably arranged inside the bearing bracket through a bearing, and the bottom end of the flat key drive shaft is connected and assembled with the output end of an external driving member through a coupling. Positioning gears are arranged on both sides of the outer surface of the flat key drive shaft. The positioning gears are slidably arranged on the flat key drive shaft. One of the positioning gears is meshed with the first tooth ring, and the other positioning gear is meshed with the second tooth ring. A ball sleeve is fixedly arranged on the inner surface of the bearing bracket at the position of the wave ring, and a rolling ball is rotatably arranged inside the ball sleeve.

[0012] Preferably, a first linkage frame is fixedly arranged on the outer surface of the fixed sleeve. The upper end of the first linkage frame penetrates through the first cross plate and extends above the first cross plate. The two-way backflow coating mechanism further includes a first positioning ring fixedly arranged on one side of the inner surface of the first movable sleeve, and an intermittent bevel gear fixedly arranged on the other side of the inner surface of the first movable sleeve. A material nozzle is arranged inside the fixed sleeve, and a transfer shaft is fixedly arranged in the middle of the outer end of the material nozzle. A driving bevel gear is fixedly arranged in the middle of the outer end of the transfer shaft. A conical cavity is formed in the middle of the material nozzle, and a plug is elastically arranged inside the conical cavity through a spring. A sponge body is arranged in the middle of the outer end of the plug. A three-way pipe is fixedly arranged in the middle of the outer end of the material nozzle, and injection cylinders are arranged at both ends of the three-way pipe.

[0013] Preferably, the first linkage frame slides relative to the first cross plate. The cross section of the first positioning ring is designed in a U-shaped structure. The material nozzle rotates relative to the fixed sleeve. The driving bevel gear is meshed with the intermittent bevel gear. Rubber rings are arranged on both sides of the inner surface of the fixed sleeve. An anti-detachment ring is fixedly arranged in the middle of the outer surface of the material nozzle. The upper end of the injection cylinder is threadedly engaged with a cover body. A wire routing cylinder is fixedly arranged inside the first cross plate between the two first linkage frames.

[0014] Preferably, the intermittent synchronous spraying mechanism includes a second cross plate fixedly arranged on the inner surface of the base frame and below the second movable sleeve, and an inner ring arranged in the middle of the second movable sleeve. It also includes a second positioning ring fixedly arranged on the inner surface of the bottom of the second movable sleeve. It further includes a plurality of convex blocks fixedly arranged in the middle of the inner surface of the second movable sleeve and arranged in an annular and equally spaced manner. Both sides of the bottom end of the inner ring are fixedly provided with second linkage frames. The bottom end of the second linkage frame penetrates through the second cross plate and extends below the second cross plate. The second linkage frame slides relative to the second cross plate. The cross section of the second positioning ring is designed in a U-shaped structure.

[0015] Preferably, a plurality of air cylinders are arranged inside the inner ring at equal intervals in a circular shape, and nozzles are arranged at the ends of the air cylinders. A piston rod is elastically arranged inside the air cylinder through a spring. A rubber plug is fixedly arranged in the middle of one end of the piston rod, and a roller is installed at the other end of the piston rod. A heat insulation ring is fixedly arranged inside the air cylinder near the nozzle position, and an electric heating coil is wound on the inner surface of the heat insulation ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] By setting a two-way backflow coating mechanism and a rotation assistance mechanism, during use, the intermittent rotation of the three-way pipe drives the two injection cylinders to exchange positions up and down, enabling the fireproof coating to remain in a flowing state even when not being coated, avoiding local curing of the fireproof coating, and ensuring the normal progress of the coating work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the structures of the first bracket and the second bracket of the present invention;

[0020] Figure 3 is a schematic diagram of the bearing bracket structure of the present invention;

[0021] Figure 4 is a partial side view cross-sectional view of the first movable sleeve of the present invention;

[0022] Figure 5 is a partial side view cross-sectional view of the second movable sleeve of the present invention;

[0023] Figure 6 is a plane structure cross-sectional view of the present invention;

[0024] Figure 7 is a partial plane cross-sectional view of the present invention.

[0025] In the figure:

[0026] 100, Rotation assisting mechanism; 101, First movable sleeve; 102, Telescopic cover; 103, Second movable sleeve; 104, First bracket; 105, Second bracket; 106, First rack; 107, Second rack; 108, Drive rod; 109, Drive gear; 110, First supporting wheel; 111, Second supporting wheel; 112, Fixed frame; 113, Centering guide rod; 114, Ball sleeve; 115, Ball; 116, Wave ring; 117, Bearing support; 118, Positioning gear; 119, Flat key drive shaft; 120, First gear ring; 121, Second gear ring; 200, Base frame; 300, Bidirectional backflow coating mechanism; 301, First horizontal plate; 302, First positioning ring; 303, Intermittent bevel gear; 304, Fixed sleeve; 305, Adapter shaft; 306, Nozzle; 307, Cable routing cylinder; 308, First linkage bracket; 309, Driving bevel gear; 310, Injection cylinder; 311, Cover body; 312, Rubber ring; 313, Three-way pipe; 314, Plug; 315, Anti-disengagement ring; 316, Sponge body; 400, Intermittent synchronous blowing mechanism; 401, Second horizontal plate; 402, Second linkage bracket; 403, Second positioning ring; 404, Air cylinder; 405, Inner ring; 406, Roller; 407, Rubber plug; 408, Electric heating coil; 409, Spray port; 410, Piston rod; 411, Heat insulation ring; 412, Protrusion. Detailed implementation manners

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-7 , the present invention provides a technical solution: a processing device for a fireproof cable with a metal sheath, including a base frame 200 and a rotation assisting mechanism 100. In this device, it further includes: a bidirectional backflow coating mechanism 300 for coating the fireproof cable in cooperation with the rotation assisting mechanism 100; an intermittent synchronous blowing mechanism 400 for drying the fireproof coating in cooperation with the rotation assisting mechanism 100. When in use, an external traction device is used to convey the fireproof cable from above the base frame 200. First, the bidirectional backflow coating mechanism 300 is used to coat it, and then the intermittent synchronous blowing mechanism 400 is used to dry it.

[0029] Specifically, the rotation assisting mechanism 100 includes a cylinder body disposed in the middle of the base frame 200. The cylinder body is composed of a first movable sleeve 101, a telescopic cover 102, and a second movable sleeve 103. The first movable sleeve 101, the telescopic cover 102, and the second movable sleeve 103 are arranged in sequence from top to bottom. The first movable sleeve 101, the telescopic cover 102, and the second movable sleeve 103 are coaxial. One end of the telescopic cover 102 is connected to the first movable sleeve 101, and the other end of the telescopic cover 102 is connected to the second movable sleeve 103. A first gear ring 120 is fixedly arranged in the middle of the outer surface of the first movable sleeve 101, and a second gear ring 121 is fixedly arranged in the middle of the outer surface of the second movable sleeve 103. A first bracket 104 is arranged outside the first movable sleeve 101 at the position of the first gear ring 120, and a second bracket 105 is arranged outside the second movable sleeve 103 at the position of the second gear ring 121. Both the first bracket 104 and the second bracket 105 are designed in an arc structure. The first bracket 104 is coaxial with the first movable sleeve 101, and the second bracket 105 is coaxial with the second movable sleeve 103. A plurality of first supporting wheels 110 arranged in an annular and equally spaced manner are installed inside the first bracket 104, which are used to drive the first movable sleeve 101 to lift synchronously in cooperation with the provided first gear ring 120. The first movable sleeve 101 rotates relative to the first bracket 104, and the first supporting wheels 110 are arranged in a rolling manner with the first movable sleeve 101. A plurality of second supporting wheels 111 arranged in an annular and equally spaced manner are installed inside the second bracket 105, which are used to drive the second movable sleeve 103 to lift synchronously in cooperation with the provided second gear ring 121. The cross-sections of both the second supporting wheels 111 and the first supporting wheels 110 are designed in an I-shaped structure. The second movable sleeve 103 rotates relative to the second bracket 105, and the second supporting wheels 111 are arranged in a rolling manner with the second movable sleeve 103.Furthermore, the rotation assisting mechanism 100 further includes a fixing frame 112 disposed at the bottom of the base frame 200. Both sides of the upper surface of the fixing frame 112 are fixedly provided with two center guide rods 113. The upper ends of the center guide rods 113 sequentially penetrate through the second bracket 105 and the first bracket 104. The second bracket 105 slides relative to the center guide rods 113, and the first bracket 104 slides relative to the center guide rods 113. The first bracket 104 and the second bracket 105 are elastically arranged through a spring. The lower surface of the first bracket 104 is fixedly provided with a first rack 106, and the upper surface of the second bracket 105 is fixedly provided with a second rack 107. The second rack 107 is arranged opposite to the first rack 106. A driving gear 109 is arranged between the second rack 107 and the first rack 106. Both the second rack 107 and the first rack 106 are meshed with the driving gear 109. The middle part of the outer end of the driving gear 109 is fixedly provided with a driving rod 108. The driving rod 108 is rotatably arranged with the base frame 200 through a bearing. The rotation assisting mechanism 100 further includes a wave ring 116 fixedly arranged in the middle of the upper end of the first movable sleeve 101, and a bearing frame 117 fixedly arranged on one side of the inner surface of the base frame 200. A flat key driving shaft 119 is rotatably arranged inside the bearing frame 117 through a bearing. The bottom end of the flat key driving shaft 119 is connected and assembled with the output end of an external driving member through a coupling. Positioning gears 118 are arranged on both sides of the outer surface of the flat key driving shaft 119. The positioning gears 118 are slidably arranged on the flat key driving shaft 119. One of the positioning gears 118 is meshed with a first tooth ring 120 for driving the first movable sleeve 101 to rotate synchronously in cooperation with the arranged first tooth ring 120. The other positioning gear 118 is meshed with a second tooth ring 121 for driving the second movable sleeve 103 to rotate synchronously in cooperation with the arranged second tooth ring 121. A ball sleeve 114 is fixedly arranged on the inner surface of the bearing frame 117 at the position of the wave ring 116. A rolling ball 115 is rollably arranged inside the ball sleeve 114 for intermittently pushing the first movable sleeve 101 in cooperation with the arranged wave ring 116. Under the action of the driving rod 108, the driving gear 109, the first rack 106 and the second rack 107, the first movable sleeve 101 and the second movable sleeve 103 approach and move away from each other.

[0030] Specifically, the two-way backflow coating mechanism 300 includes a first cross plate 301 fixedly arranged on the inner surface of the base frame 200 and located above the first movable sleeve 101, and two fixed sleeves 304 both arranged in the middle of the first movable sleeve 101. The positions of the two fixed sleeves 304 correspond to each other. A first linkage frame 308 is fixedly arranged on the outer surface of the fixed sleeve 304. The upper end of the first linkage frame 308 penetrates through the first cross plate 301 and extends above the first cross plate 301, and the first linkage frame 308 slides relative to the first cross plate 301. A wire guiding cylinder 307 is fixedly arranged inside the first cross plate 301 and between the two first linkage frames 308 for positioning the fireproof cable. Further, the two-way backflow coating mechanism 300 further includes a first positioning ring 302 fixedly arranged on one side of the inner surface of the first movable sleeve 101 for driving the fixed sleeve 304 to lift and lower synchronously in cooperation with the arranged first linkage frame 308, and an intermittent bevel gear 303 fixedly arranged on the other side of the inner surface of the first movable sleeve 101. The cross section of the first positioning ring 302 is designed in a U-shaped structure. A material nozzle 306 is arranged inside the fixed sleeve 304, and the material nozzle 306 rotates relative to the fixed sleeve 304. A transfer shaft 305 is fixedly arranged in the middle of the outer end of the material nozzle 306, and a driving bevel gear 309 is fixedly arranged in the middle of the outer end of the transfer shaft 305, and the driving bevel gear 309 is meshed with the intermittent bevel gear 303. Rubber rings 312 are arranged on both sides of the inner surface of the fixed sleeve 304 for stabilizing the rotated material nozzle 306 to prevent the material nozzle 306 from rotating back. An anti-detachment ring 315 is fixedly arranged in the middle of the outer surface of the material nozzle 306. A tapered cavity is formed in the middle of the material nozzle 306, and a plug 314 is elastically arranged inside the tapered cavity through a spring. A sponge body 316 is arranged in the middle of the outer end of the plug 314 for contacting the fireproof cable and applying the fireproof coating. A three-way pipe 313 is fixedly arranged in the middle of the outer end of the material nozzle 306, and injection cylinders 310 are arranged at both ends of the three-way pipe 313 for storing the fireproof coating. The upper end of the injection cylinder 310 is provided with a cover body 311 through screw engagement. The material nozzle 306, the three-way pipe 313, and the two injection cylinders 310 are communicated with each other.

[0031] Specifically, the intermittent synchronous blowing mechanism 400 includes a second horizontal plate 401 fixedly arranged on the inner surface of the base frame 200 and located below the second movable sleeve 103, and an inner ring 405 arranged in the middle of the second movable sleeve 103. It also includes a second positioning ring 403 fixedly arranged on the inner surface of the bottom of the second movable sleeve 103, and a plurality of bumps 412 that are all fixedly arranged in the middle of the inner surface of the second movable sleeve 103 and are arranged at equal intervals in a ring shape. The cross-section of the second positioning ring 403 is designed in a U-shaped structure. Both sides of the bottom end of the inner ring 405 are fixedly provided with second linkage frames 402. The second positioning ring 403 is used to drive the inner ring 405 to lift and lower synchronously in cooperation with the arranged second linkage frames 402. The bottom ends of the second linkage frames 402 penetrate through the second horizontal plate 401 and extend below the second horizontal plate 401, and the second linkage frames 402 slide relative to the second horizontal plate 401. A plurality of air cylinders 404 are arranged in the inner ring 405 and are arranged at equal intervals in a ring shape, and the ends of the air cylinders 404 are provided with spray nozzles 409. A piston rod 410 is elastically arranged in the air cylinder 404 through a spring. A rubber plug 407 is fixedly arranged in the middle of one end of the piston rod 410, and a roller 406 is installed at the other end of the piston rod 410 for pushing the piston rod 410 in cooperation with the arranged bumps 412. A heat insulation ring 411 is fixedly arranged inside the air cylinder 404 and near the spray nozzle 409, and an electric heating coil 408 is wound on the inner surface of the heat insulation ring 411.

[0032] According to the above, by setting the two-way backflow coating mechanism 300 and the rotation assisting mechanism 100, when in use, the intermittent rotation of the three-way pipe 313 drives the two feeding cylinders 310 to exchange up and down positions, enabling the fireproof coating to remain in a flowing state even when not being coated, avoiding local curing of the fireproof coating, and ensuring the normal progress of the coating work. By setting the intermittent synchronous blowing mechanism 400 and cooperating with the rotation assisting mechanism 100, the fireproof coating can be dried at multiple angles to accelerate the curing speed. Secondly, by using the arranged intermittent synchronous blowing mechanism 400, the air fluidity around the fireproof cable can be increased, and the drying efficiency can be improved.

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

Claims

1. A processing device for a fireproof cable with a metal sheath, comprising a base frame (200) and a rotation assisting mechanism (100), characterized in that, The rotation assisting mechanism (100) includes a cylinder body disposed in the middle of the base frame (200), and the cylinder body is composed of a first movable sleeve (101), a telescopic cover (102), and a second movable sleeve (103). The first movable sleeve (101), the telescopic cover (102), and the second movable sleeve (103) are arranged in sequence from top to bottom. It further includes: A two-way backflow coating mechanism (300) for cooperatively coating the fireproof cable with the rotation assisting mechanism (100). The two-way backflow coating mechanism (300) includes a first cross plate (301) fixedly disposed on the inner surface of the base frame (200) and above the first movable sleeve (101), and two fixing sleeves (304) both disposed in the middle of the first movable sleeve (101). The two fixing sleeves (304) are correspondingly positioned. An intermittent synchronous blowing mechanism (400) for cooperatively drying the fireproof coating with the rotation assisting mechanism (100).

2. The processing device for a fireproof cable with a metal sheath according to claim 1, characterized in that: The first movable sleeve (101), the telescopic cover (102), and the second movable sleeve (103) are coaxial. One end of the telescopic cover (102) is connected to the first movable sleeve (101), and the other end of the telescopic cover (102) is connected to the second movable sleeve (103). A first gear ring (120) is fixedly disposed in the middle of the outer surface of the first movable sleeve (101), and a second gear ring (121) is fixedly disposed in the middle of the outer surface of the second movable sleeve (103). A first bracket (104) is disposed outside the first movable sleeve (101) and at the position of the first gear ring (120), and a second bracket (105) is disposed outside the second movable sleeve (103) and at the position of the second gear ring (121).

3. The processing device for a fireproof cable with a metal sheath according to claim 2, characterized in that: A plurality of first supporting wheels (110) arranged in an annular and equally spaced manner are installed inside the first bracket (104). The first movable sleeve (101) rotates relative to the first bracket (104). The first supporting wheels (110) are rollingly disposed with the first movable sleeve (101). A plurality of second supporting wheels (111) arranged in an annular and equally spaced manner are installed inside the second bracket (105). The second movable sleeve (103) rotates relative to the second bracket (105). The second supporting wheels (111) are rollingly disposed with the second movable sleeve (103). The cross sections of the second supporting wheels (111) and the first supporting wheels (110) are both designed in an I-shaped structure.

4. The processing device for a fireproof cable with a metal sheath according to claim 1, wherein: The rotation assistance mechanism (100) further includes a fixed frame (112) disposed at the bottom of the base frame (200). On both sides of the upper surface of the fixed frame (112), two center guide rods (113) are fixedly provided. The upper ends of the center guide rods (113) sequentially penetrate through the second bracket (105) and the first bracket (104). The second bracket (105) slides relative to the center guide rods (113), and the first bracket (104) slides relative to the center guide rods (113). The first bracket (104) and the second bracket (105) are elastically arranged by a spring. A first rack (106) is fixedly provided on the lower surface of the first bracket (104), and a second rack (107) is fixedly provided on the upper surface of the second bracket (105). The second rack (107) is arranged opposite to the first rack (106). A driving gear (109) is arranged between the second rack (107) and the first rack (106). Both the second rack (107) and the first rack (106) are meshed with the driving gear (109). A driving rod (108) is fixedly provided in the middle of the outer end of the driving gear (109), and the driving rod (108) is rotatably arranged with the base frame (200) through a bearing.

5. The processing device for a fireproof cable with a metal sheath according to claim 1, characterized in that: The rotation assistance mechanism (100) further includes a wave ring (116) fixedly provided in the middle of the upper end of the first movable sleeve (101), and a bearing bracket (117) fixedly provided on one side of the inner surface of the base frame (200). A flat key drive shaft (119) is rotatably arranged inside the bearing bracket (117) through a bearing. The bottom end of the flat key drive shaft (119) is connected and assembled with the output end of an external driving member through a coupling. Positioning gears (118) are arranged on both sides of the outer surface of the flat key drive shaft (119). The positioning gears (118) are slidably arranged with the flat key drive shaft (119). One of the positioning gears (118) is meshed with a first toothed ring (120), and the other positioning gear (118) is meshed with a second toothed ring (121). A ball sleeve (114) is fixedly provided on the inner surface of the bearing bracket (117) at the position of the wave ring (116), and a rolling ball (115) is rollably arranged inside the ball sleeve (114).

6. The processing device for a fireproof cable with a metal sheath according to claim 1, characterized in that: A first linkage frame (308) is fixedly arranged on the outer surface of the fixed sleeve (304). The upper end of the first linkage frame (308) penetrates through the first cross plate (301) and extends above the first cross plate (301). The two-way backflow coating mechanism (300) further includes a first positioning ring (302) fixedly arranged on one side of the inner surface of the first movable sleeve (101), and an intermittent bevel gear (303) fixedly arranged on the other side of the inner surface of the first movable sleeve (101). A nozzle (306) is arranged inside the fixed sleeve (304). The middle of the outer end of the nozzle (306) is fixedly provided with a transfer shaft (305), and the middle of the outer end of the transfer shaft (305) is fixedly provided with a driving bevel gear (309). A conical cavity is formed in the middle of the nozzle (306), and a plug (314) is elastically arranged inside the conical cavity through a spring. The middle of the outer end of the plug (314) is provided with a sponge body (316). A tee pipe (313) is fixedly arranged in the middle of the outer end of the nozzle (306), and injection cylinders (310) are arranged at both ends of the tee pipe (313).

7. The processing device for a fire-resistant cable with a metal sheath according to claim 6, wherein: The first linkage frame (308) slides relative to the first cross plate (301). The cross section of the first positioning ring (302) is designed in a U-shaped structure. The nozzle (306) rotates relative to the fixed sleeve (304). The driving bevel gear (309) is meshed with the intermittent bevel gear (303). Rubber rings (312) are arranged on both sides of the inner surface of the fixed sleeve (304). An anti-disengagement ring (315) is fixedly arranged in the middle of the outer surface of the nozzle (306). A cover body (311) is arranged at the upper end of the injection cylinder (310) through screw engagement. A wire threading cylinder (307) is fixedly arranged inside the first cross plate (301) and between the two first linkage frames (308).

8. A processing device for a fireproof cable with a metal sheath according to claim 1, characterized in that: The intermittent synchronous spraying mechanism (400) includes a second cross plate (401) fixedly arranged on the inner surface of the base frame (200) and below the second movable sleeve (103), and an inner ring (405) arranged in the middle of the second movable sleeve (103). It further includes a second positioning ring (403) fixedly arranged on the inner surface of the bottom of the second movable sleeve (103), and a plurality of bumps (412) fixedly arranged in the middle of the inner surface of the second movable sleeve (103) and arranged in an annular equidistant manner. Second linkage frames (402) are fixedly arranged on both sides of the bottom end of the inner ring (405). The bottom end of the second linkage frame (402) penetrates through the second cross plate (401) and extends below the second cross plate (401). The second linkage frame (402) slides relative to the second cross plate (401). The cross section of the second positioning ring (403) is designed in a U-shaped structure.

9. The processing device for a fireproof cable with a metal sheath according to claim 8, characterized in that: Inside the inner ring (405), there are multiple air cylinders (404) arranged at equal intervals in a circular pattern, and a nozzle (409) is provided at the end of the air cylinder (404). Inside the air cylinder (404), a piston rod (410) is elastically arranged through a spring. In the middle of one end of the piston rod (410), a rubber plug (407) is fixedly arranged, and a roller (406) is installed at the other end of the piston rod (410). Inside the air cylinder (404) and near the nozzle (409), a heat insulation ring (411) is fixedly arranged, and an electric heating coil (408) is wound around the inner surface of the heat insulation ring (411).

Images