A cable manufacturing insulation layer material pretreatment device

Abstract

The application belongs to the technical field of insulation material processing, and specifically relates to an insulation layer material pretreatment device for cable manufacturing, which comprises a sorting unit, a crushing unit and a melting unit. The sorting unit is equipped with a metal detector, a sliding cutter, an extrusion roller and a blowing device, and the metal detector, the sliding cutter, the extrusion roller and the blowing device realize accurate separation of metal impurities, surface impurity removal and water content control. The crushing unit adopts main and auxiliary cutting rollers matched with an automatic speed regulating assembly and a crushing knife group to achieve two-stage uniform crushing. The melting unit is combined with a pushing auger and a waste heat circulation preheating design to realize stable conveying and energy recovery, and solves the problems of incomplete impurity removal, uneven waste crushing particle size, low process dispersion efficiency, insufficient melting stability, resource waste and environmental pollution in the existing insulation layer material pretreatment, realizes efficient impurity removal, uniform crushing, stable melting and resource recycling of the insulation material, and adapts to the demand of large-scale continuous production.

Description

Technical Field

[0001] This invention belongs to the field of insulating material processing technology, specifically referring to a pretreatment device for insulating layer materials used in cable manufacturing. Background Technology

[0002] A cable is a device for transmitting electrical energy or signals, consisting of one or more insulated conductors and an outer insulating protective layer, carrying electricity or information from one point to another. In cable manufacturing, insulation extrusion is one of the core processes, and its quality directly determines the cable's insulation performance, service life, and operational safety. Currently, cable insulation processing often uses an extruder to heat insulating granules, extruding the molten insulating material onto the outside of the conductor to form the insulation layer.

[0003] However, existing technologies have many shortcomings in the pretreatment of insulation materials: On the one hand, traditional granulation processes for insulation granules are prone to problems such as uneven particle size, excessive moisture content, and impurity contamination, leading to frequent material blockage and uneven melting during extrusion, which in turn affects the density and appearance quality of the insulation layer and reduces the product qualification rate. On the other hand, insulation waste generated during cable production (such as scraps and defective products) and insulation layers after dismantling waste cables are mostly disposed of through landfilling and incineration, which not only wastes resources but also pollutes the environment. Existing recycling equipment suffers from problems such as incomplete crushing, poor impurity removal, and insufficient compatibility between recycled and new materials, resulting in severe performance degradation of recycled materials that cannot meet the requirements of insulation layer production. In addition, existing pretreatment equipment is mostly distributed, with granulation and waste recycling processes operating independently, requiring multiple devices to work together. This results in low automation, high material loss, and low processing efficiency, making it unsuitable for the continuous needs of large-scale cable production. Therefore, there is an urgent need for an integrated, automated, efficient, and environmentally friendly insulation material pretreatment device to solve the above-mentioned technical pain points. Summary of the Invention

[0004] In response to the above situation and to overcome the shortcomings of the prior art, this invention provides a pretreatment device for insulation layer materials used in cable manufacturing. To solve the problems of incomplete impurity removal, poor waste recycling effect, low process dispersion efficiency, and insufficient melting stability in the existing insulation layer material pretreatment, this invention adopts an integrated design of sorting, crushing, melting, and waste heat recovery. It is equipped with an intelligent sorting and impurity removal module, an adaptive crushing module, and a waste heat circulation preheating module, which achieves the technical effects of efficient impurity removal, uniform crushing, stable melting, and resource recycling of insulation materials, and is suitable for the needs of large-scale continuous production.

[0005] The technical solution adopted by the present invention is as follows: a pretreatment device for insulation layer material for cable manufacturing, comprising a sorting unit, a crushing unit and a melting unit, wherein the sorting unit is located on one side of the crushing unit and the melting unit is located on the other side of the crushing unit, the discharge port of the sorting unit is connected to the inlet of the crushing unit and the discharge port of the crushing unit is connected to the inlet of the melting unit.

[0006] Furthermore, the sorting unit includes a transport compartment, a diversion arm, a transport base, a diversion cylinder, a metal detector, a mesh belt conveyor, a sliding cutter, and a diversion channel. The transport base is located on the ground, the transport compartment is located above the transport base, and the diversion channel is located inside the transport compartment. The diversion arm is rotatably connected to the diversion channel, and the main body of the diversion cylinder is rotatably connected to the diversion channel. The diversion cylinder drives the diversion arm to rotate, thereby diverting the material. The telescopic end of the diversion cylinder is rotatably connected to the diversion arm. The metal detector is located on the diversion channel, the mesh belt conveyor is located inside the transport compartment, and the sliding cutter is slidably located on the diversion channel for segmenting materials containing metal impurities, facilitating subsequent metal separation.

[0007] Furthermore, the sliding cutter includes a cutting slide, a flat blade assembly, a bevel blade assembly, a cutting synchronization arm, a cutting cylinder, and a cutting spring. The cutting slide is slidably mounted on the diversion channel. The flat blade assembly is slidably connected to the cutting slide, and the bevel blade assembly is also slidably connected to the cutting slide. The cutting cylinder is mounted on the cutting slide, and the cutting synchronization arm is connected to the telescopic end of the cutting cylinder. The cutting synchronization arm is slidably connected to both the flat blade assembly and the bevel blade assembly. One end of the cutting spring is fixedly connected to the cutting slide, and the other end is fixedly connected to the diversion channel. The cutting cylinder drives the cutting synchronization arm to open and close the two sets of blades, achieving efficient shearing. The cutting spring provides a restoring force for the cutting slide, adapting to the cutting buffer requirements of materials of different thicknesses.

[0008] Furthermore, the inlet end of the transport compartment is rotatably connected to a carrying wheel, the outlet end of the transport compartment is provided with symmetrical docking outlets and sorting outlets, a squeezing base is slidably provided inside the transport compartment, a squeezing roller is rotatably connected to the squeezing base, and a squeezing spring is connected between the squeezing base and the transport compartment.

[0009] Furthermore, the top of the transport compartment is equipped with a blowing device, and the bottom of the transport compartment is connected to an exhaust pipe. The blowing device sprays high-speed airflow to remove dust, debris and other impurities attached to the surface of the material. The impurities are discharged through the exhaust pipe with the airflow. At the same time, it can reduce the moisture content of the material and improve the subsequent melting quality.

[0010] Furthermore, the crushing unit includes a cutting chamber, a main cutting roller, a cutting follower gear, a cutting drive shaft, a cutting output gear, a speed-regulating transmission wheel, a cutting motor, and a motor base. The cutting chamber is located on the ground, the main cutting roller is rotatably mounted inside the cutting chamber, the cutting follower gear is located at the end of the main cutting roller, the cutting drive shaft is rotatably mounted inside the cutting chamber, the cutting output gear is located at the end of the cutting drive shaft, the cutting follower gear is meshed with the cutting output gear, speed-regulating transmission wheels are provided at both ends of the cutting drive shaft, the motor base is located on one side of the cutting chamber, the cutting motor is mounted on the motor base, and the cutting drive shaft is connected to the cutting motor via a universal coupling. The cutting motor drives the cutting drive shaft to rotate, which in turn drives the main cutting roller to rotate through gear meshing, thereby achieving preliminary segmented cutting of the material.

[0011] Furthermore, automatic speed control components are installed on both sides of the cutting chamber. The automatic speed control components include a speed control chamber, a limiting slide, a fixed conical disc, a splined sleeve shaft, a sliding conical disc, a speed control slide, a speed control rod, and a speed control spring. The speed control chamber is located on the side wall of the cutting chamber. The limiting slide is slidably mounted on the speed control chamber. A secondary roller follower shaft is rotatably connected to the limiting slide. A secondary cutting roller is mounted on the secondary roller follower shaft. The fixed conical disc is mounted on the secondary roller follower shaft. The speed control slide is splinedly connected to the secondary roller follower shaft. The sliding conical disc is located at one end of the splined sleeve shaft, and the speed control slide is located at the other end of the splined sleeve shaft. A rod is mounted on a speed-regulating slide block. Inclined grooves are provided on the top and bottom inner walls of the speed-regulating chamber. The speed-regulating rod is slidably connected to the inclined grooves. The fixed cone and sliding cone are connected to the speed-regulating transmission wheel via a metal belt. One end of the speed-regulating spring is fixedly connected to the inner wall of the speed-regulating chamber, and the other end is fixedly connected to the limiting slide block. When the material thickness changes, the secondary cutting roller drives the limiting slide block to move. The speed-regulating rod slides along the inclined groove, driving the speed-regulating slide block, splined sleeve shaft, and sliding cone to move, adjusting the distance between the fixed and sliding cones, thereby changing the metal belt transmission ratio and achieving adaptive adjustment of the secondary cutting roller speed to ensure cutting uniformity.

[0012] Furthermore, the bottom of the cutting chamber is provided with a crushing channel, the crushing channel is provided with a bottom screen, a crushing blade assembly is rotatably connected to the crushing channel, a crushing motor is installed on the outside of the crushing channel, and the crushing blade assembly is drivenly connected to the output end of the crushing motor. The crushing blade assembly is used to finely crush the material after the initial cutting to ensure that the material particle size is uniform and meets the subsequent melting requirements.

[0013] Furthermore, the melting unit includes a closed channel, a twin-screw heater, a preheating channel, a spiral channel, a separator, and a preheating fan. The twin-screw heater is located on the ground, the preheating channel is located above the twin-screw heater, the spiral channel is connected to the discharge end of the twin-screw heater, the lower end of the separator is connected to the inlet end of the twin-screw heater, one end of the preheating channel is connected to the inlet end of the separator, the outlet end of the closed channel is connected to the other end of the preheating channel, the air outlet end of the spiral channel is connected to the preheating channel, the preheating fan is connected to the air inlet end of the spiral channel, and a material distribution port is provided on one side of the spiral channel.

[0014] Furthermore, the feed end of the closed channel is connected to the crushing channel, a pushing auger is rotatably installed inside the closed channel, a pushing motor is installed on the side wall of the closed channel, and the pushing auger is drivenly connected to the pushing motor. The pushing auger realizes the stable conveying of the crushed material and avoids material accumulation and blockage.

[0015] The beneficial effects of the cable insulation material pretreatment device provided in this solution are as follows:

[0016] (1) In response to the problem of incomplete removal of metal impurities in existing equipment, a combination of metal detection, segmented cutting and diversion sorting is adopted. Metal detectors, sliding cutters and diversion rotating arms are set up to achieve accurate identification and efficient separation of residual metals in insulating materials. This solves the technical problems of wear and melting defects in subsequent equipment caused by metal impurities and improves the purity of recycled materials.

[0017] (2) To address the problem of uneven particle size of waste materials, a two-stage crushing and adaptive speed regulation design is adopted. The main and auxiliary cutting rollers are set up in conjunction with the automatic speed regulation component and the crushing blade group to achieve uniform crushing of insulating waste materials of different thicknesses and shapes, ensuring the consistency of material particle size and guaranteeing the stability of subsequent melting.

[0018] (3) To address the issues of excessive moisture content and numerous impurities in the material, a combination of extrusion pre-removal and airflow blowing is adopted. Extrusion rollers and blowing devices are installed to remove impurities from the material surface and control the moisture content, thereby avoiding defects such as bubbles and uneven melting during the melting process and improving the molding quality of the insulation layer.

[0019] (4) To address the problem of energy waste, a waste heat circulation preheating design is adopted, which utilizes the waste heat of the molten particles in the spiral channel to preheat the material to be processed, thereby achieving efficient energy utilization, reducing the energy consumption of the twin-screw heater, and improving production economy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a cable insulation layer material pretreatment device proposed in this invention;

[0021] Figure 2 This is a schematic diagram of the sorting unit.

[0022] Figure 3 This is a diagram showing the transmission relationships within the sorting unit;

[0023] Figure 4 This is a schematic diagram of the diversion channel.

[0024] Figure 5 This is a schematic diagram of the sliding cutter.

[0025] Figure 6 This is a schematic diagram of the crushing unit.

[0026] Figure 7 Transmission relationship diagram of the main cutting roller;

[0027] Figure 8 This is a schematic diagram of the automatic speed control component;

[0028] Figure 9 This is a transmission relationship diagram for the automatic speed control component;

[0029] Figure 10 This is a diagram showing the connection relationships of the splined sleeve shaft;

[0030] Figure 11 This is a schematic diagram of the melting unit structure;

[0031] Figure 12 This is a cross-sectional view of a closed passage.

[0032] Figure 13 This is a cross-sectional view of the spiral channel.

[0033] The components include: 1. Sorting unit; 2. Crushing unit; 3. Melting unit; 101. Transport compartment; 102. Diverting rotary arm; 103. Transport base; 104. Diverting cylinder; 105. Metal detector; 106. Mesh belt conveyor; 107. Sliding cutter; 108. Cutting slide; 109. Flat blade assembly; 110. Bevel blade assembly; 111. Cutting synchronization arm; 112. Cutting cylinder; 113. Cutting spring; 114. Mounting wheel; 115. Extrusion base; 116. Extrusion roller; 117. Extrusion spring; 118. Docking outlet; 119. Sorting outlet; 120. Diverting channel; 121. Air shower device; 122. Exhaust pipe; 201. Cutting compartment; 202. Main cutting roller; 203. Cutting follower gear; 204. Cutting drive shaft; 205. Cutting output gear. 206. Speed-regulating transmission wheel; 207. Cutting motor; 208. Universal coupling; 209. Motor base; 210. Automatic speed regulation assembly; 211. Speed ​​regulation chamber; 212. Limiting slide; 213. Secondary roller follower shaft; 214. Secondary cutting roller; 215. Fixed cone disc; 216. Splined sleeve shaft; 217. Sliding cone disc; 218. Speed-regulating slide; 219. Speed-regulating slide rod; 220. Speed-regulating spring; 221. Metal belt; 222. Inclined chute; 223. Crushing channel; 224. Bottom screen; 225. Crushing blade assembly; 226. Crushing motor; 301. Enclosed channel; 302. Twin screw heater; 303. Preheating channel; 304. Spiral channel; 305. Separator; 306. Preheating fan; 307. Pushing auger; 308. Pushing motor; 309. Distributing port.

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] like Figures 1-13 As shown, the present invention provides a pretreatment device for insulation layer material for cable manufacturing, including a sorting unit 1, a crushing unit 2 and a melting unit 3. The sorting unit 1 is located on one side of the crushing unit 2, and the melting unit 3 is located on the other side of the crushing unit 2. The discharge port of the sorting unit 1 is connected to the inlet of the crushing unit 2, and the discharge port of the crushing unit 2 is connected to the inlet of the melting unit 3.

[0038] The sorting unit 1 includes a transport compartment 101, a diversion arm 102, a transport base 103, a diversion cylinder 104, a metal detector 105, a mesh belt conveyor 106, a sliding cutter 107, and a diversion channel 120. The transport base 103 is located on the ground, the transport compartment 101 is located above the transport base 103, the diversion channel 120 is located inside the transport compartment 101, the diversion arm 102 is rotatably connected to the diversion channel 120, and the main body of the diversion cylinder 104 is connected to the diversion channel 120. A rotating connection is established, with the telescopic end of the diverting cylinder 104 rotatably connected to the diverting rotating arm 102. A metal detector 105 is mounted on the diverting channel 120. A mesh belt conveyor 106 is located inside the transport compartment 101. A sliding cutter 107 is slidably mounted on the diverting channel 120. The sliding cutter 107 includes a cutting slide 108, a flat blade assembly 109, a beveled blade assembly 110, a cutting synchronization arm 111, a cutting cylinder 112, and a cutting spring 113. The cutting slide 108 is slidably mounted on the diverting channel 120. On the flow channel 120, the flat-blade assembly 109 is slidably connected to the cutting slide 108, the beveled blade assembly 110 is slidably connected to the cutting slide 108, the cutting cylinder 112 is mounted on the cutting slide 108, the cutting synchronization arm 111 is fixedly connected to the telescopic end of the cutting cylinder 112, and the cutting synchronization arm 111 is slidably connected to both the flat-blade assembly 109 and the beveled blade assembly 110. One end of the cutting spring 113 is fixedly connected to the cutting slide 108, and the other end of the cutting spring 113 is connected to the flow channel 120. Fixed connection; the inlet end of the transport compartment 101 is rotatably connected to the carrying wheel 114, the outlet end of the transport compartment 101 is provided with a symmetrical docking outlet 118 and a sorting outlet 119, the transport compartment 101 is slidably provided with a compression base 115, the compression base 115 is rotatably connected to the compression base 115, the compression base 115 and the transport compartment 101 are connected with a compression spring 117, the top of the transport compartment 101 is provided with a blowing device 121, and the bottom of the transport compartment 101 is connected with an exhaust pipe 122.

[0039] The crushing unit 2 includes a cutting chamber 201, a main cutting roller 202, a cutting follower gear 203, a cutting drive shaft 204, a cutting output gear 205, a speed regulating drive wheel 206, a cutting motor 207, and a motor base 209. The cutting chamber 201 is located on the ground. The main cutting roller 202 is rotatably mounted inside the cutting chamber 201. The cutting follower gear 203 is located at the end of the main cutting roller 202. The cutting drive shaft 204 is rotatably mounted inside the cutting chamber 201. The cutting output gear 205 is located at the end of the cutting drive shaft 204. The cutting follower gear 203 and the cutting output gear 205 are meshed together. The cutting drive shaft 204 has speed-regulating drive wheels 206 at both ends. The motor base 209 is located on one side of the cutting chamber 201, and the cutting motor 207 is located on the motor base 209. The cutting drive shaft 204 is connected to the cutting motor 207 via a universal coupling 208. Automatic speed regulation components 210 are installed on both sides of the cutting chamber 201. The automatic speed regulation components 210 include a speed regulation chamber 211, a limit slide 212, a fixed cone disc 215, a splined sleeve shaft 216, a sliding cone disc 217, a speed regulation slide 218, a speed regulation slide rod 219, and a speed regulation spring 220. The speed regulation chamber 211 is located in the cutting chamber. On the side wall of 201, a limiting slide 212 is slidably mounted on the speed regulating chamber 211. A secondary roller follower shaft 213 is rotatably connected to the limiting slide 212. A secondary cutting roller 214 is mounted on the secondary roller follower shaft 213. A fixed cone disk 215 is mounted on the secondary roller follower shaft 213. A speed regulating slide 218 is splinedly connected to the secondary roller follower shaft 213. A sliding cone disk 217 is mounted on one end of a splined sleeve shaft 216. The speed regulating slide 218 is mounted on the other end of the splined sleeve shaft 216. A speed regulating rod 219 is mounted on the speed regulating slide 218. Inclined grooves 222 are provided on the top and bottom inner walls of the speed regulating chamber 211. 219 is slidably connected to the inclined groove 222. The fixed cone disk 215 and the sliding cone disk 217 are connected to the speed regulating transmission wheel 206 via the metal belt 221. One end of the speed regulating spring 220 is fixedly connected to the inner wall of the speed regulating chamber 211, and the other end of the speed regulating spring 220 is fixedly connected to the limiting slide 212. The bottom of the cutting chamber 201 is provided with a crushing channel 223. A bottom screen 224 is provided inside the crushing channel 223. A crushing blade assembly 225 is rotatably connected to the crushing channel 223. A crushing motor 226 is installed on the outside of the crushing channel 223. The crushing blade assembly 225 is connected to the output end of the crushing motor 226.

[0040] The melting unit 3 includes a closed channel 301, a twin-screw heater 302, a preheating channel 303, a spiral channel 304, a separator 305, and a preheating fan 306. The twin-screw heater 302 is located on the ground, the preheating channel 303 is located above the twin-screw heater 302, the spiral channel 304 is connected to the discharge end of the twin-screw heater 302, the lower end of the separator 305 is connected to the inlet end of the twin-screw heater 302, and one end of the preheating channel 303 is connected to the inlet end of the separator 305. The closed channel... The outlet end of channel 301 is connected to the other end of preheating channel 303, the air outlet end of spiral channel 304 is connected to preheating channel 303, the preheating fan 306 is connected to the air inlet end of spiral channel 304, and a material distribution port 309 is provided on one side of spiral channel 304; the feed end of closed channel 301 is connected to crushing channel 223, a pushing auger 307 is rotatably installed inside closed channel 301, a pushing motor 308 is provided on the side wall of closed channel 301, and the pushing auger 307 is connected to the pushing motor 308 in a drive connection.

[0041] In practical use, the collected defective insulation layer (hereinafter referred to as defective product) is first wound onto the mounting wheel 114. Then, the end of the cable is placed between the mesh belt conveyor 106 and the extrusion roller 116. The mesh belt conveyor 106 is started, and the elastic force of the extrusion spring 117 is used to wind the defective product between the mesh belt conveyor 106 and the extrusion roller 116. The defective product is transported by the mesh belt conveyor 106. At the same time, the metal detector 105 is started to detect whether there is still copper wire in the defective product. If there is no metal in the defective product, it is sent out of the docking outlet 118 through the mesh belt conveyor 106 for further processing. If the metal detector 105 detects metal, cutting will be started first. Cylinder 112 performs an extension and reset operation. The extension of cylinder 112 pushes the cutting synchronizer arm 111 upwards. The sliding of the cutting synchronizer arm 111 causes the flat-blade assembly 109 and the beveled blade assembly 110 to move closer together, using them to cut the defective product. Afterwards, the reset of cylinder 112 causes the cutting synchronizer arm 111 to slide downwards. The sliding of the cutting synchronizer arm 111 causes the flat-blade assembly 109 and the beveled blade assembly 110 to move away from each other. During the cutting process, the defective product pushes the cutting slide block 108 to slide a short distance. At this time, the cutting slide block 108 will squeeze... When the cutting spring 113 is compressed, after the flat blade assembly 109 and the bevel blade assembly 110 complete their shearing and reset, the cutting spring 113 extends and pushes the cutting slide 108 back to its original position. Then, the diversion cylinder 104 is activated, extending and pushing the diversion arm 102 to rotate. Defective products without metal are transported out through the docking outlet 118, while defective products containing metal are pushed by the diversion arm 102 to the sorting outlet 119 for further sorting. When the subsequent metal detector 105 no longer detects a metal signal (i.e., the defective product does not contain metal), the cutting cylinder 112 is activated again, performing another extension and reset operation to further process the defective products. During the shearing process, the diversion cylinder 104 retracts and resets. At this time, the defective products without metal are discharged normally through the docking outlet 118. During the sorting process of defective products, the blowing device 121 is activated. High-speed airflow blows across the surface of the defective products, blowing off the attached dust particles and discharging them through the bottom exhaust pipe 122. The airflow is discharged through the bottom exhaust pipe 122 to prevent impurities from entering the subsequent granulator, preventing equipment wear and mold blockage. At the same time, it improves the purity of recycled materials and ensures the performance of the final product. In addition, blowing can also reduce the moisture content of defective products, ensure the melting stability during granulation, and avoid problems such as uneven melting, bubble generation, and rough particle surface.After the defective product enters the cutting chamber 201 through the docking outlet 118, the cutting motor 207 is started. The cutting motor 207 drives the cutting drive shaft 204 to rotate through the universal coupling 208. The rotation of the cutting drive shaft 204 drives the cutting output gear 205 to rotate, which in turn drives the cutting follower gear 203 to rotate. The rotation of the cutting follower gear 203 drives the main cutting roller 202 to rotate. At the same time, the rotation of the cutting drive shaft 204 drives the speed regulating drive wheel 206 to rotate. The rotation of the speed regulating drive wheel 206 drives the fixed cone disc 215 and the sliding cone disc 217 to rotate synchronously through the metal belt 221. The fixed conical disc 215, the sliding conical disc 217, the auxiliary roller follower shaft 213, and the spline sleeve shaft 216 rotate synchronously. The auxiliary cutting roller 214 rotates in the opposite direction to the main cutting roller 202. When the defective product enters the speed regulating chamber 211, it falls between the main cutting roller 202 and the auxiliary cutting roller 214. The cutting teeth on the cylindrical surfaces of the main cutting roller 202 and the auxiliary cutting roller 214 squeeze and cut the defective product. After the defective product is cut into small segments, it falls from the bottom of the speed regulating chamber 211 into the crushing channel 223. The crushing motor 226 is started, and the crushing motor 226 drives the crushing blade assembly 225 to rotate. The crushing blade assembly 225 crushes the product. After cutting, the defective product is obtained as defective powder. The defective product is pulverized to a specified size and falls from the bottom screen 224 into the closed channel 301. Once in the closed channel 301, the defective powder is fed into the preheating channel 303. At this time, the preheating fan 306 is activated, drawing outside air into the spiral channel 304. The resulting airflow passes sequentially through the spiral channel 304, the preheating channel 303, and the separator 305 before being discharged. The airflow then carries the defective powder out of the preheating channel 303. The material is fed to separator 305, where it undergoes centrifugal separation and falls into the inlet of twin-screw heater 302. The twin-screw heater 302 heats and melts the material, processing it into granules that fall from the outlet of the twin-screw heater 302 into spiral channel 304. The finished granules are transported by airflow within spiral channel 304. During this airflow, the heat from the finished granules is absorbed, preheating the substandard powder located in preheating channel 303. The finished granules, under centrifugal force, are discharged from the distribution port 309 along the inner wall of spiral channel 304 and collected by a separate sealed chamber (or other sealed container).

[0042] The above is the specific workflow of this invention. This step can be repeated next time it is used.

[0043] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for pre-treating insulation material for cable manufacturing, characterized in that: It includes a sorting unit (1), a crushing unit (2) and a melting unit (3). The sorting unit (1) is located on one side of the crushing unit (2), and the melting unit (3) is located on the other side of the crushing unit (2). The outlet of the sorting unit (1) is connected to the inlet of the crushing unit (2), and the outlet of the crushing unit (2) is connected to the inlet of the melting unit (3). The crushing unit (2) includes a cutting chamber (201), a main cutting roller (202), a cutting follower gear (203), a cutting transmission shaft (204), a cutting output gear (205), a speed regulating transmission wheel (206), a cutting motor (207), and a motor base (209). The cutting chamber (201) is located on the ground. The main cutting roller (202) is rotatably mounted inside the cutting chamber (201). The cutting follower gear (203) is located at the end of the main cutting roller (202). The cutting transmission shaft (204) is rotatably mounted inside the cutting chamber (201). Inside the cutting chamber (201), the cutting output gear (205) is located at the end of the cutting drive shaft (204), the cutting follower gear (203) is meshed with the cutting output gear (205), the two ends of the cutting drive shaft (204) are provided with speed regulating drive wheels (206), the motor base (209) is located on one side of the cutting chamber (201), the cutting motor (207) is located on the motor base (209), and the cutting drive shaft (204) is connected to the cutting motor (207) through a universal coupling (208); The sorting unit (1) includes a transport compartment (101), a diversion arm (102), a transport base (103), a diversion cylinder (104), a metal detector (105), a mesh belt conveyor (106), a sliding cutter (107), and a diversion channel (120). The transport base (103) is located on the ground, the transport compartment (101) is located above the transport base (103), and the diversion channel (120) is located inside the transport compartment (101). The diversion arm (102) is rotatably connected to the diversion channel (120), the main body of the diversion cylinder (104) is rotatably connected to the diversion channel (120), the telescopic end of the diversion cylinder (104) is rotatably connected to the diversion arm (102), the metal detector (105) is located on the diversion channel (120), the mesh belt conveyor (106) is located inside the transport cabin (101), and the sliding cutter (107) is slidably located on the diversion channel (120). The melting unit (3) includes a closed channel (301), a twin-screw heater (302), a preheating channel (303), a spiral channel (304), a separator (305), and a preheating fan (306). The twin-screw heater (302) is located on the ground, the preheating channel (303) is located above the twin-screw heater (302), the spiral channel (304) is connected to the discharge end of the twin-screw heater (302), and the lower end of the separator (305) is connected to... The inlet end of the twin-screw heater (302) is connected, one end of the preheating channel (303) is connected to the inlet end of the separator (305), the outlet end of the closed channel (301) is connected to the other end of the preheating channel (303), the air outlet end of the spiral channel (304) is connected to the preheating channel (303), the preheating fan (306) is connected to the air inlet end of the spiral channel (304), and a feed outlet (309) is provided on one side of the spiral channel (304).

2. The cable manufacturing insulation material pretreatment device according to claim 1, characterized in that: Automatic speed control components (210) are installed on both sides of the cutting chamber (201). The automatic speed control components (210) include a speed control chamber (211), a limiting slide (212), a fixed cone disc (215), a splined sleeve shaft (216), a sliding cone disc (217), a speed control slide (218), a speed control slide rod (219), and a speed control spring (220). The speed control chamber (211) is located on the side wall of the cutting chamber (201). The limiting slide (212) is slidably located on the speed control chamber (211). A secondary roller follower shaft (213) is rotatably connected to the limiting slide (212). A secondary cutting roller (214) is provided on the secondary roller follower shaft (213). The fixed cone disc (215) is located on the secondary roller follower shaft (213). The speed control slide... (218) is splinedly connected to the auxiliary roller follower shaft (213). The sliding cone disk (217) is located on one end of the spline sleeve shaft (216). The speed regulating slide (218) is located on the other end of the spline sleeve shaft (216). The speed regulating slide rod (219) is located on the speed regulating slide rod (218). The top and bottom inner walls of the speed regulating chamber (211) are provided with inclined grooves (222). The speed regulating slide rod (219) is slidably connected to the inclined grooves (222). The fixed cone disk (215) and the sliding cone disk (217) are connected to the speed regulating transmission wheel (206) through the metal belt (221). One end of the speed regulating spring (220) is fixedly connected to the inner wall of the speed regulating chamber (211). The other end of the speed regulating spring (220) is fixedly connected to the limiting slide rod (212).

3. The cable manufacturing insulation material pretreatment device according to claim 2, characterized in that: The bottom of the cutting chamber (201) is provided with a crushing channel (223), and a bottom screen (224) is provided inside the crushing channel (223). A crushing blade assembly (225) is rotatably connected to the crushing channel (223), and a crushing motor (226) is installed on the outside of the crushing channel (223). The crushing blade assembly (225) is connected to the output end of the crushing motor (226) in a transmission connection.

4. A cable insulation material pretreatment device according to claim 3, characterized in that: The sliding cutter (107) includes a cutting slide (108), a flat blade assembly (109), a beveled blade assembly (110), a cutting synchronization arm (111), a cutting cylinder (112), and a cutting spring (113). The cutting slide (108) is slidably mounted on the diversion channel (120). The flat blade assembly (109) is slidably connected to the cutting slide (108), and the beveled blade assembly (110) is slidably connected to the cutting slide (108). The cutting cylinder (112) is mounted on the cutting slide (108). The cutting synchronization arm (111) is fixedly connected to the telescopic end of the cutting cylinder (112). The cutting synchronization arm (111) is slidably connected to both the flat blade assembly (109) and the beveled blade assembly (110). One end of the cutting spring (113) is fixedly connected to the cutting slide (108), and the other end of the cutting spring (113) is fixedly connected to the diversion channel (120).

5. The cable manufacturing insulation material pretreatment device according to claim 4, characterized in that: The inlet end of the transport compartment (101) is rotatably connected to a carrying wheel (114), and the outlet end of the transport compartment (101) is provided with a symmetrical docking outlet (118) and a sorting outlet (119). A pressing base (115) is slidably provided inside the transport compartment (101), and a pressing roller (116) is rotatably connected to the pressing base (115). A pressing spring (117) is connected between the pressing base (115) and the transport compartment (101).

6. The cable manufacturing insulation material pretreatment device according to claim 5, characterized in that: The top of the transport compartment (101) is equipped with a blower (121), and the bottom of the transport compartment (101) is connected to an exhaust pipe (122).

7. The cable manufacturing insulation material pretreatment device according to claim 6, characterized in that: The feed end of the closed channel (301) is connected to the crushing channel (223). A pusher auger (307) is rotatably installed inside the closed channel (301). A pusher motor (308) is installed on the side wall of the closed channel (301). The pusher auger (307) and the pusher motor (308) are connected in a transmission.

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