Raw material feeding device for cable protection pipe production

Abstract

The application belongs to the technical field of conveying equipment, and particularly relates to a raw material feeding device for cable protection pipe production, which comprises an inclined support frame and a spiral conveyor main body fixed at the support end of the inclined support frame, one side of the inclined support frame is provided with an industrial control cabinet, and the device further comprises: a tail material box, which is fixed at the discharging end of the spiral conveyor main body, the tail material box is perpendicular to the ground, and a second feeding unit arranged horizontally is mounted on the side wall of the tail material box; an upper mounting cover is fixed on the side wall of the tail material box away from the spiral conveyor main body, and the upper mounting cover is in communication with the inside of the tail material box. The application can avoid the agglomeration of powder materials during the conveying process, weaken the fluctuation of the feeding amount, ensure the uniform and stable conveying of the raw materials, break the bridge blockage of the raw materials, realize automatic feeding through cooperation with monitoring, maintain the continuous operation of feeding, detect the uniformity of the powder materials, timely remind when an abnormality occurs, and effectively improve the forming quality of the cable protection pipe.

Description

Technical Field

[0001] This invention belongs to the field of conveying equipment technology, and in particular relates to a raw material feeding device for the production of cable protection pipes. Background Technology

[0002] Plastic cable protection pipes are widely used in municipal power grids, building power distribution, new energy and road and bridge cable pre-embedding. They can protect cables from external forces and corrosion damage. Cable protection pipe extrusion equipment requires the use of conveying equipment for continuous and stable material feeding.

[0003] The mainstream production process in the industry is to use powder raw materials to extrude plastic cable protection pipes. After various powders are mixed evenly in a dry mixer, they need to be stably conveyed to the extrusion equipment through a feeding device. Screw conveyors are widely used for feeding powder raw materials for cable protection pipes due to their advantages such as good sealing and relatively stable feeding. However, during the conveying process, the powder is easily compressed and agglomerated between the blades by the combined effect of the powder's own weight and the internal feeding pressure. This is especially true for raw materials with high moisture content, which are more prone to agglomeration. After entering the extruder, the agglomerated material is not easy to melt and plasticize quickly and evenly, and may affect the extrusion stability of the extruder. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a raw material feeding device for the production of cable protection pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a raw material feeding device for cable protection pipe production, comprising an inclined support frame and a screw conveyor body fixed to the support end of the inclined support frame, wherein an industrial control cabinet is provided on one side of the inclined support frame, and further comprising: The tail material box is fixed at the discharge end of the screw conveyor body. The tail material box is perpendicular to the ground, and a horizontally arranged secondary feeding unit is installed on the side wall of the tail material box. An upper mounting cover is fixed to the side wall of the tail material box away from the main body of the screw conveyor, and the upper mounting cover is connected to the interior of the tail material box. A rotating dispersing mechanism is installed inside the upper mounting cover, and the dispersing end of the rotating dispersing mechanism extends to the lower side of the discharge end of the main body of the screw conveyor. An arch-breaking unit is installed on the side wall of the tailings box and is connected to the interior of the tailings box. The arch-breaking unit is equipped with a vision inspection camera. The arch-breaking unit conveys the raw material to the area below the detection end of the vision inspection camera. The arch-breaking unit is equipped with a fan-shaped discharge pipe and is connected to the interior of the secondary feeding unit. A pressure level sensor is fixedly installed on the side wall of the fan-shaped discharge pipe, and the detection end of the pressure level sensor is located inside the fan-shaped discharge pipe.

[0006] Preferably, the secondary feeding unit includes a horizontal discharge pipe fixedly inserted into the tail material box away from the main body of the screw conveyor. The bottom inner sidewall of the tail material box is arc-shaped and matches the arc surface of the inner wall of the horizontal discharge pipe. A secondary output shaft coaxial with the horizontal discharge pipe is rotatably connected to the sidewall of the tail material box, and a secondary screw conveyor blade matching the horizontal discharge pipe is fixedly sleeved on the shaft wall of the secondary output shaft. A frequency conversion drive mechanism electrically connected to the industrial control cabinet is fixed to the sidewall of the tail material box, and the frequency conversion drive mechanism drives the secondary output shaft to rotate. The fan-shaped discharge pipe is internally connected to the horizontal discharge pipe.

[0007] Preferably, the rotary dispersing mechanism includes a rotating shaft rotatably disposed inside the upper mounting cover. A mounting ring is fixedly sleeved on the shaft wall of the rotating shaft. A plurality of evenly distributed striking rods in a ring are fixed on the side wall of the mounting ring. The end of the striking rod near the tail material box extends to below the discharge end of the screw conveyor body. A rotary motor is fixed on the top of the upper mounting cover, and the output end of the rotary motor is connected to the rotating shaft for transmission. The rotary motor is electrically connected to the industrial control cabinet.

[0008] Preferably, the striking rod has a metal sleeve fixedly fitted to its wall, and the outer surface of the metal sleeve has a plurality of evenly distributed striking protrusions.

[0009] Preferably, the arch-breaking unit includes a lower circular cover fixedly inserted into the tail material box away from the main side wall of the screw conveyor, with one side of the lower circular cover extending into the interior of the tail material box. The surface of the lower circular cover has a material passage opening at a position inside the tail material box. A rotating rod is rotatably provided inside the lower circular cover, and an installation sleeve is fixedly sleeved on the rod wall. Multiple scraper plates evenly distributed in a ring are fixed on the outer side wall of the installation sleeve. A speed reduction transmission assembly is provided between the upper installation cover and the lower circular cover, and the rotating rod is connected to the rotating shaft through the speed reduction transmission assembly. A detection hole is provided at the eccentric position of the top of the lower circular cover, and a visual inspection camera is installed at the detection hole. The fan-shaped discharge pipe is fixedly inserted into the bottom of the lower circular cover.

[0010] Preferably, the reduction transmission assembly includes an upper transmission shaft rotatably mounted at the bottom of the upper mounting cover, a reduction gear fixedly sleeved on the upper transmission shaft, a transmission gear meshing with the reduction gear fixed at the lower end of the rotating shaft, a support plate fixed to the side wall of the tail material box, a lower transmission shaft rotatably connected to the end face of the support plate, and an electromagnetic clutch installed between the lower transmission shaft and the upper transmission shaft. Both the lower transmission shaft and the end of the rotating rod are equipped with pulleys, and the two pulleys are connected to a transmission belt. The electromagnetic clutch is electrically connected to the industrial control cabinet.

[0011] Preferably, the inside of the detection hole is provided with a transparent plate, and a pressure ring is fixed inside the detection hole. The transparent plate is fixed inside the detection hole by the pressure ring. A ring-shaped supplementary light is fixed on the inner side wall of the pressure ring. A fixed cover coaxial with the detection hole is fixed on the top of the lower cover. The visual inspection camera is fixed inside the fixed cover. The visual inspection camera is electrically connected to the industrial control cabinet.

[0012] Preferably, a material cylinder is fixedly inserted into the top of the tailings box, and an infrared material level sensor is fixedly installed on the top of the material cylinder. The infrared material level sensor is offset from the striking rod, and the infrared material level sensor is electrically connected to the industrial control cabinet.

[0013] Compared with existing technologies, the present invention has the following advantages: 1. This invention, through the coordinated operation of an inclined support frame, a screw conveyor body, and an industrial control cabinet, can feed the powdered raw material of cable protection pipes into the extruder. Combined with a tail material box, a secondary feeding unit, an upper mounting cover, and a rotating dispersing mechanism, the powdered raw material can be broken up, preventing agglomeration and ensuring subsequent extrusion quality. Simultaneously, the horizontally positioned secondary feeding unit can horizontally convey the powdered raw material into the extruder at the tail end, avoiding agglomeration caused by inclined conveying and ensuring feeding quality. Furthermore, the secondary feeding unit ensures that the powdered raw material enters the extruder uniformly, preventing fluctuations in the raw material feed at the screw conveyor body's feed end, which would affect feeding stability.

[0014] 2. The present invention, through the setting of the arch-breaking unit, can break up the powdery raw material when there is blockage such as bridges in the tail material box, so as to minimize the impact of raw material blockage on the feeding stability. In addition, with the setting of the fan-shaped discharge pipe and pressure level sensor, it can not only monitor the blockage of powdery raw material and realize automatic and timely arch breaking, but also automatically replenish raw material inside the horizontal discharge pipe when bridge blockage of powdery raw material occurs, so as to ensure the continuity of feeding.

[0015] 3. The present invention, through the setting of detection holes, transparent plates, pressure rings, ring-shaped supplementary lights, fixing covers and visual inspection cameras, can work with the arch-breaking unit to periodically detect the mixing uniformity of powdered raw materials, thereby issuing a reminder when the powdered raw materials are not mixed uniformly, and helping to improve the forming quality of cable protection pipes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a raw material feeding device for the production of cable protection pipes provided by the present invention; Figure 2 This is a three-dimensional structural diagram of the tail material box of a raw material feeding device for cable protection pipe production provided by the present invention; Figure 3This is a side view of the tail material box of a raw material feeding device for cable protection pipe production provided by the present invention; Figure 4 This is a schematic diagram of the internal structure of the tail material box of a raw material feeding device for cable protection pipe production provided by the present invention; Figure 5 This is a schematic diagram of the internal structure of the upper mounting cover of a raw material feeding device for cable protection pipe production provided by the present invention; Figure 6 This invention provides a raw material feeding device for the production of cable protection pipes. Figure 5 Enlarged view of the structure of section A; Figure 7 This is a schematic diagram of the internal structure of the lower circular cover of a raw material feeding device for cable protection pipe production provided by the present invention; Figure 8 This is a schematic diagram of the transmission structure of the rotating shaft and rotating rod of a raw material feeding device for cable protection pipe production provided by the present invention.

[0017] In the diagram: 1. Inclined support frame; 2. Main body of screw conveyor; 3. Control cabinet; 4. Tail box; 5. Secondary feeding unit; 51. Horizontal discharge pipe; 52. Secondary output shaft; 53. Secondary screw conveyor blade; 54. Variable frequency drive mechanism; 6. Upper mounting cover; 7. Rotary breaking mechanism; 71. Rotating shaft; 72. Mounting ring; 73. Impact rod; 74. Rotary motor; 8. Arch breaking unit; 81. Lower circular cover; 82. Rotating rod; 83. Mounting sleeve; 84. Scraper; 9. Metal sleeve ; 10. Impact protrusion; 11. Reduction transmission assembly; 111. Upper drive shaft; 112. Reduction gear; 113. Transmission gear; 114. Support plate; 115. Lower drive shaft; 116. Electromagnetic clutch; 117. Transmission belt; 12. Detection hole; 13. Transparent plate; 14. Pressure ring; 15. Ring supplement light; 16. Fixing cover; 17. Visual inspection camera; 18. Fan-shaped discharge pipe; 19. Pressure level sensor; 20. Material cylinder; 21. Infrared level sensor. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] like Figures 1-8As shown, a raw material feeding device for cable protection pipe production includes an inclined support frame 1 and a screw conveyor body 2 fixed to the support end of the inclined support frame 1. An industrial control cabinet 3 is provided on one side of the inclined support frame 1. The device also includes a tail material box 4, which is fixed to the discharge end of the screw conveyor body 2. The tail material box 4 is perpendicular to the ground, and a horizontally arranged secondary feeding unit 5 is installed on the side wall of the tail material box 4. The secondary feeding unit 5 includes a horizontal discharge pipe 51 fixedly inserted into the side wall of the tail material box 4 away from the screw conveyor body 2. The bottom inner wall of the tailing box 4 is arc-shaped and matches the arc surface of the inner wall of the horizontal discharge pipe 51. The side wall of the tailing box 4 is rotatably connected to a secondary output shaft 52 coaxial with the horizontal discharge pipe 51. The shaft wall of the secondary output shaft 52 is fixedly sleeved with a secondary spiral conveying blade 53 that matches the horizontal discharge pipe 51. The side wall of the tailing box 4 is fixed with a frequency conversion drive mechanism 54 electrically connected to the industrial control cabinet 3. The frequency conversion drive mechanism 54 drives the secondary output shaft 52 to rotate. The frequency conversion drive mechanism 54 includes components such as a frequency conversion motor, pulleys, and belts.

[0020] The upper mounting cover 6 is fixed to the side wall of the tail material box 4 away from the screw conveyor body 2, and the upper mounting cover 6 is connected to the interior of the tail material box 4. A rotating dispersing mechanism 7 is installed inside the upper mounting cover 6, and the dispersing end of the rotating dispersing mechanism 7 extends to the lower side of the discharge end of the screw conveyor body 2. The rotating dispersing mechanism 7 includes a rotating shaft 71 rotatably disposed inside the upper mounting cover 6. A mounting ring 72 is fixedly sleeved on the shaft wall of the rotating shaft 71. A plurality of ring-shaped and evenly distributed striking rods 7 are fixed on the side wall of the mounting ring 72. 3. The end of the striking rod 73 near the tail material box 4 extends to the lower end of the discharge end of the screw conveyor body 2. A rotary motor 74 is fixed on the top of the upper mounting cover 6, and the output end of the rotary motor 74 is connected to the rotating shaft 71. The rotary motor 74 is electrically connected to the industrial control cabinet 3. A metal sleeve 9 is fixedly sleeved on the rod wall of the striking rod 73. Multiple evenly distributed striking protrusions 10 are fixed on the outer surface of the metal sleeve 9. The metal sleeve 9 and the striking protrusions 10 can increase the dispersion effect on the powdery raw materials.

[0021] The arch-breaking unit 8 is installed on the side wall of the tail material box 4 and is connected to the interior of the tail material box 4. The arch-breaking unit 8 includes a lower circular cover 81 fixedly inserted into the side wall of the tail material box 4 away from the screw conveyor body 2, and one side of the lower circular cover 81 extends into the interior of the tail material box 4. The surface of the lower circular cover 81 has a material passage opening at the position inside the tail material box 4. A rotating rod 82 is rotatably provided inside the lower circular cover 81. An installation sleeve 83 is fixedly sleeved on the rod wall of the rotating rod 82. Multiple scraper plates 84 are fixedly arranged in a ring on the outer side wall of the installation sleeve 83. A speed reduction transmission assembly 11 is provided between the upper installation cover 6 and the lower circular cover 81, and the rotating rod 82 is connected to the rotating shaft 71 through the speed reduction transmission assembly 11. The bridging state of the powdered raw material can be broken by the pushing and scraping action of the scraper plates 84 on the raw material.

[0022] The reduction transmission assembly 11 includes an upper transmission shaft 111 rotatably mounted at the bottom of the upper mounting cover 6. A reduction gear 112 is fixedly sleeved on the upper transmission shaft 111. A transmission gear 113 meshing with the reduction gear 112 is fixed at the lower end of the rotating shaft 71. A support plate 114 is fixed to the side wall of the tail material box 4. A lower transmission shaft 115 is rotatably connected to the end face of the support plate 114. An electromagnetic clutch 116 is installed between the lower transmission shaft 115 and the upper transmission shaft 111. Pulleys are installed at the ends of the lower transmission shaft 115 and the rotating rod 82. The two pulleys are connected to a transmission belt 117. The electromagnetic clutch 116 is electrically connected to the industrial control cabinet 3. The speed transmission ratio between the transmission gear 113 and the reduction gear 112 is 3:1.

[0023] A detection hole 12 is provided at the eccentric top of the lower circular cover 81. A vision inspection camera 17 is provided at the detection hole 12. The arch-breaking unit 8 conveys the raw material to the area below the detection end of the vision inspection camera 17. A transparent plate 13 is provided inside the detection hole 12. A pressure ring 14 is fixed inside the detection hole 12, and the transparent plate 13 is fixed inside the detection hole 12 through the pressure ring 14. A ring-shaped supplementary light 15 is fixed on the inner side wall of the pressure ring 14. A fixed cover 16 coaxial with the detection hole 12 is fixed on the top of the lower circular cover 81. The vision inspection camera 17 is fixed inside the fixed cover 16. The vision inspection camera 17 is electrically connected to the industrial control cabinet 3. The vision inspection camera 17 will collect real-time images of the powdery raw material below through the detection hole 12 and feed the image information back to the industrial control cabinet 3.

[0024] A fan-shaped discharge pipe 18 is fixedly inserted into the bottom of the lower circular cover 81, and the fan-shaped discharge pipe 18 is connected to the interior of the horizontal discharge pipe 51. A pressure level sensor 19 is fixedly installed on the side wall of the fan-shaped discharge pipe 18, and the detection end of the pressure level sensor 19 is located inside the fan-shaped discharge pipe 18. The detection end of the pressure level sensor 19 can detect the pressure of the powdered raw material on it, thereby determining the raw material storage pressure inside the fan-shaped discharge pipe 18.

[0025] A material cylinder 20 is fixedly inserted into the top of the tailing bin 4, and an infrared material level sensor 21 is fixed to the top of the material cylinder 20. The infrared material level sensor 21 is offset from the striking rod 73. The infrared material level sensor 21 is electrically connected to the industrial control cabinet 3. The infrared material level sensor 21 calculates the material level height inside the tailing bin 4 by emitting an infrared beam. When the material level height is higher than two-thirds, the industrial control cabinet 3 controls the feeding speed of the screw conveyor body 2 to decrease. When the material level height is lower than one-third, the industrial control cabinet 3 controls the feeding speed of the screw conveyor body 2 to increase, so as to ensure that the powdery raw material storage in the tailing bin 4 is sufficient.

[0026] The operating principle of this invention is explained as follows: The powdered raw material to be extruded enters through the feed end of the screw conveyor body 2. The screw conveyor body 2 tilts and conveys the powdered raw material upwards, eventually leading it into the tail material box 4. During the conveying process, the industrial control cabinet 3 controls the rotary motor 74 to operate. The rotary motor 74 drives the rotating shaft 71 to rotate the mounting ring 72, thereby causing the striking rod 73 to rotate rapidly. When the powdered raw material discharged from the screw conveyor body 2 falls downwards, the striking rod 73 impacts the powdered raw material through the metal sleeve 9 and the striking protrusion 10, thereby breaking up any possible agglomerated powdered raw material. The broken powdered raw material falls to the bottom of the tail material box 4. As more and more powdered raw material accumulates, the material level in the tail material box 4 begins to rise. When the infrared material level sensor 21 detects the material level... When the material reaches halfway to the tail box 4, the industrial control cabinet 3 controls the frequency conversion drive mechanism 54 to start. The frequency conversion drive mechanism 54 drives the secondary output shaft 52 to rotate the secondary spiral conveyor blade 53, which can horizontally convey and discharge the powdered raw material to the feed end of the extruder, thus completing the feeding work. Since the tail box 4 can store a certain amount of powdered raw material, the secondary spiral conveyor blade 53 can push the powdered raw material evenly out. The fluctuation of the raw material quantity at the feed end of the spiral conveyor body 2 will not affect the discharge quantity of the powdered raw material. At the same time, due to the horizontal setting of the secondary feeding unit 5, the powdered raw material after being dispersed will not be affected by its own gravity and pressure fluctuations and will not agglomerate. This can improve the feeding quality and avoid affecting the operation of the extruder. Secondly, during the feeding process, the industrial control cabinet 3 controls the electromagnetic clutch 116 to operate once every minute. At this time, the rotating shaft 71 drives the reduction gear 112 to rotate through the transmission gear 113. The reduction gear 112 then drives the rotating rod 82 to rotate synchronously through the upper transmission shaft 111, the electromagnetic clutch 116, the lower transmission shaft 115, the pulley, and the transmission belt 117. The rotating rod 82 then drives the scraper 84 to rotate through the mounting sleeve 83. Since one side of the lower circular cover 81 is inside the tail material box 4, and the top of the lower circular cover 81 has a material passage opening, some powdery raw materials will be in this material passage opening. When the scraper 84 rotates, this part of the powdery raw materials will be pushed into the lower circular cover 81 by the scraper 84. The electromagnetic clutch 116 stops working after working for 5 seconds. At this time, the scraper 84 rotates 60°, and the powdery raw materials that have entered the lower circular cover 81 are directly below the detection hole 12. Subsequently, the industrial control cabinet 3 controls the vision inspection camera 17 to work. 7. Real-time images of the powdered raw materials below are acquired through the detection hole 12, and the image information is fed back to the industrial control cabinet 3. The industrial control cabinet 3 compares the image pixels and color uniformity with the preset standard sample parameters (the specific parameters are set according to the proportion and color of different powdered raw materials) to determine whether the powdered raw materials are mixed evenly. When the raw materials are mixed evenly, the industrial control cabinet 3 controls the electromagnetic clutch 116 to work for 25 seconds, causing the scraper 84 to rotate 300° and push the powdered raw materials back into the tail material box 4. When the mixing is uneven, the industrial control cabinet 3 controls the electromagnetic clutch 116 to work for 30 seconds, causing the scraper 84 to rotate 360°, and the powdered raw materials are detected again by the visual inspection camera 17. When uneven mixing is detected three times in a row, the industrial control cabinet 3 will issue voice prompts to remind the staff to check the uniformity of the powdered raw materials in time. If necessary, the production of cable protection pipes should be suspended to reduce the generation of defective products and waste of raw materials. Secondly, initially, the inside of the fan-shaped discharge pipe 18 is empty. At this time, the pressure detected by the pressure level sensor 19 is 0. The industrial control cabinet 3 will control the electromagnetic clutch 116 to work continuously. At this time, when the powdery material entering the lower cover 81 passes through the fan-shaped discharge pipe 18, the powdery material will fall directly into the inside of the fan-shaped discharge pipe 18. As more and more powdery material enters the fan-shaped discharge pipe 18, when the pressure level sensor 19 detects that the pressure has reached the threshold (this pressure threshold is set based on the pressure after different powdery materials fill the inside of the fan-shaped discharge pipe 18), it will send an electrical signal back to the industrial control cabinet 3. At this time, the industrial control cabinet 3 controls the rotating rod 82 to rotate back to the zero position (the bottom of the lower cover 81 is fixed with an angle encoder to detect the rotation angle of the rotating rod 82 to ensure the accuracy of feeding to the vision inspection camera 17) and controls the electromagnetic clutch 116 to stop working. When the secondary spiral conveyor blade 53 is normally conveying powdery raw materials, the horizontal discharge pipe 51 is full of powdery raw materials, so the powdery raw materials inside the fan-shaped discharge pipe 18 are basically not discharged. However, when the powdery raw materials are blocked by bridging or other phenomena, the secondary spiral conveyor blade 53 cannot continuously convey the powdery raw materials. At this time, the amount of powdery raw materials inside the horizontal discharge pipe 51 decreases, and the powdery raw materials inside the fan-shaped discharge pipe 18 will flow downward into the horizontal discharge pipe 51. On the one hand, this can temporarily replenish the material inside the horizontal discharge pipe 51, ensuring the continuous conveying of powdery raw materials by the secondary spiral conveyor blade 53. On the one hand, as the powdery raw material inside the fan-shaped discharge pipe 18 is discharged, the pressure of the powdery raw material on the detection end of the pressure level sensor 19 decreases. At this time, the electrical signal fed back to the control cabinet 3 by the pressure level sensor 19 disappears. The control cabinet 3 will immediately control the electromagnetic clutch 116 to work, so that the scraper 84 continues to rotate. By using the pushing and scraping action of the scraper 84 on the powdery raw material, the powdery raw material in the bridge can be broken up. Until the control cabinet 3 receives the electrical signal fed back by the pressure level sensor 19 again, the control cabinet 3 controls the electromagnetic clutch 116 to stop working.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A raw material feeding device for cable protection pipe production, comprising an inclined support frame (1) and a screw conveyor body (2) fixed to the support end of the inclined support frame (1), wherein a control cabinet (3) is provided on one side of the inclined support frame (1), characterized in that, Also includes: Tail box (4) is fixed at the discharge end of the screw conveyor body (2). The tail box (4) is perpendicular to the ground, and a horizontally arranged secondary feeding unit (5) is installed on the side wall of the tail box (4). The upper mounting cover (6) is fixed to the side wall of the tail box (4) away from the screw conveyor body (2), and the upper mounting cover (6) is connected to the interior of the tail box (4). The upper mounting cover (6) is equipped with a rotating dispersing mechanism (7), and the dispersing end of the rotating dispersing mechanism (7) extends to the lower side of the discharge end of the screw conveyor body (2). An arch-breaking unit (8) is installed on the side wall of the tailing box (4) and is connected to the interior of the tailing box (4). The arch-breaking unit (8) is equipped with a visual inspection camera (17). The arch-breaking unit (8) conveys the raw material to the area below the detection end of the visual inspection camera (17). The arch-breaking unit (8) is equipped with a fan-shaped discharge pipe (18) and is connected to the interior of the secondary feeding unit (5). A pressure level sensor (19) is fixedly installed on the side wall of the fan-shaped discharge pipe (18) and the detection end of the pressure level sensor (19) is located inside the fan-shaped discharge pipe (18). The rotating scattering mechanism (7) includes a rotating shaft (71) rotatably disposed inside the upper mounting cover (6). The shaft wall of the rotating shaft (71) is fixedly sleeved with a mounting ring (72). The side wall of the mounting ring (72) is fixed with a plurality of ring-shaped and evenly distributed striking rods (73). The end of the striking rod (73) near the tail material box (4) extends to below the discharge end of the screw conveyor body (2). The top of the upper mounting cover (6) is fixed with a rotary motor (74), and the output end of the rotary motor (74) is connected to the rotating shaft (71) for transmission. The rotary motor (74) is electrically connected to the industrial control cabinet (3). The arch-breaking unit (8) includes a lower circular cover (81) fixedly inserted into the side wall of the tail material box (4) away from the screw conveyor body (2), and one side of the lower circular cover (81) extends into the interior of the tail material box (4). The surface of the lower circular cover (81) has a material passage opening at the position inside the tail material box (4). A rotating rod (82) is rotatably provided inside the lower circular cover (81). An installation sleeve (83) is fixedly sleeved on the rod wall of the rotating rod (82). The outer side of the installation sleeve (83) Multiple scraper blades (84) are fixed on the side wall in a ring. A speed reduction transmission assembly (11) is provided between the upper mounting cover (6) and the lower circular cover (81). The rotating rod (82) is connected to the rotating shaft (71) through the speed reduction transmission assembly (11). A detection hole (12) is provided at the eccentric top of the lower circular cover (81). The visual inspection camera (17) is installed at the detection hole (12). The fan-shaped discharge pipe (18) is fixedly inserted into the bottom of the lower circular cover (81).

2. The raw material feeding device for cable protection pipe production according to claim 1, characterized in that, The secondary feeding unit (5) includes a horizontal discharge pipe (51) fixedly inserted into the side wall of the tail material box (4) away from the main body (2) of the screw conveyor. The bottom inner side wall of the tail material box (4) is arc-shaped and matches the arc surface of the inner wall of the horizontal discharge pipe (51). The side wall of the tail material box (4) is rotatably connected to a secondary output shaft (52) coaxial with the horizontal discharge pipe (51). The shaft wall of the secondary output shaft (52) is fixedly sleeved with a secondary screw conveyor blade (53) matching the horizontal discharge pipe (51). The side wall of the tail material box (4) is fixedly connected to a frequency conversion drive mechanism (54) electrically connected to the industrial control cabinet (3). The frequency conversion drive mechanism (54) drives the secondary output shaft (52) to rotate. The fan-shaped discharge pipe (18) is connected to the interior of the horizontal discharge pipe (51).

3. The raw material feeding device for cable protection pipe production according to claim 1, characterized in that, The striking rod (73) has a metal sleeve (9) fixedly fitted on its wall, and the outer surface of the metal sleeve (9) has a plurality of evenly distributed striking protrusions (10).

4. The raw material feeding device for cable protection pipe production according to claim 1, characterized in that, The speed reduction transmission assembly (11) includes an upper transmission shaft (111) rotatably mounted at the bottom of the upper mounting cover (6). The upper transmission shaft (111) is fixedly sleeved with a speed reduction gear (112). The lower end of the rotating shaft (71) is fixed with a transmission gear (113) meshing with the speed reduction gear (112). The side wall of the tail material box (4) is fixed with a support plate (114). The end face of the support plate (114) is rotatably connected to a lower transmission shaft (115). An electromagnetic clutch (116) is installed between the lower transmission shaft (115) and the upper transmission shaft (111). The lower transmission shaft (115) and the rod end of the rotating rod (82) are both equipped with pulleys. The two pulleys are connected to a transmission belt (117). The electromagnetic clutch (116) is electrically connected to the industrial control cabinet (3).

5. The raw material feeding device for cable protection pipe production according to claim 1, characterized in that, The inside of the detection hole (12) is provided with a transparent plate (13), and a pressure ring (14) is fixed inside the detection hole (12). The transparent plate (13) is fixed inside the detection hole (12) by the pressure ring (14). A ring-shaped supplementary light (15) is fixed on the inner side wall of the pressure ring (14). A fixed cover (16) coaxial with the detection hole (12) is fixed on the top of the lower circular cover (81). The visual inspection camera (17) is fixed inside the fixed cover (16). The visual inspection camera (17) is electrically connected to the industrial control cabinet (3).

6. The raw material feeding device for cable protection pipe production according to claim 1, characterized in that, The top of the tailing box (4) is fixedly connected to a material cylinder (20), and the top of the material cylinder (20) is fixed with an infrared material level sensor (21). The infrared material level sensor (21) is offset from the striking rod (73), and the infrared material level sensor (21) is electrically connected to the industrial control cabinet (3).

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