Machining method for steel roller with polymer coating

Abstract

The invention discloses a method for processing a steel roller with a polymer coating, which relates to the technical field of intelligent manufacturing and comprises the following steps of: sequentially loading a corresponding number of steel rollers to be processed into a die barrel on a base body, resetting and fixing an end cover on a base, rotating a top cylinder, and primarily finely adjusting and fixing the positions of the steel rollers to be processed; according to the invention, heat dissipated by the raw material slurry is taken as an original energy source, rapid cooling and shaping of the raw material slurry are promoted, static cooling is changed into dynamic cooling, the heat dissipation balance of the raw material slurry is improved, and the heat dissipation efficiency of the raw material slurry is improved. Static injection molding is changed into dynamic injection molding, the eccentricity rate after raw material forming is reduced, raw material slurry is more sufficiently and stably filled into a gap between a mold cylinder and a to-be-machined steel roller, the forming effect of a high-molecular coating is improved, and the adhesive force between the high-molecular coating and the to-be-machined steel roller is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent manufacturing, and particularly to a processing method for a steel roll with a polymer coating. Background Technique

[0002] For a steel roll with a polymer coating, that is, a polymer material is coated on the surface of the steel roll substrate. Combining the high strength of the steel roll and the wear-resistant and corrosion-resistant characteristics of the polymer material, compared with traditional steel rolls, the polymer-coated steel roll performs outstandingly in complex environments. To combine the polymer material with the steel roll, corresponding processing methods are required. The Chinese patent discloses an integrally injection molding method for mixing and modification, with the application number: CN201610399120.2. This method integrates the functions of extrusion molding and injection molding, and can directly complete the modification extrusion of polymer materials and the injection molding of products. However, in the current processing method of steel rolls, during the injection molding process of the polymer coating, additional energy is required to assist the cooling and molding of the raw material slurry, which not only increases the processing energy consumption, but also the heat dissipation balance of the raw material slurry cannot be guaranteed. It is easy to deform abnormally due to uneven heat dissipation. Coupled with the influence of gravity, the filling accuracy and sufficiency of the raw material slurry cannot be guaranteed, and coating eccentricity and coating defects are likely to occur, and the forming effectiveness of the polymer coating cannot be guaranteed. Summary of the Invention

[0003] The present invention provides a processing method for a steel roll with a polymer coating, which can effectively solve the problems in the above background technique that in the current processing method of steel rolls, during the injection molding process of the polymer coating, additional energy is required to assist the cooling and molding of the raw material slurry, which not only increases the processing energy consumption, but also the heat dissipation balance of the raw material slurry cannot be guaranteed. It is easy to deform abnormally due to uneven heat dissipation. Coupled with the influence of gravity, the filling accuracy and sufficiency of the raw material slurry cannot be guaranteed, and coating eccentricity and coating defects are likely to occur, and the forming effectiveness of the polymer coating cannot be guaranteed.

[0004] To achieve the above object, the present invention provides the following technical solution: A processing method for a steel roll with a polymer coating, including the following steps: S1. Sequentially load the corresponding number of steel rolls to be processed into the die barrel on the substrate, reset and fix the end cover on the base, and rotate the top cylinder to preliminarily finely adjust and fix the position of the steel roll to be processed. S2. Connect the air chamber to the inner cavity of the top cylinder through a connecting valve and a threaded pipe, inject air into the strip cavity through an air nozzle, adjust the air pressure received by the end face of the plug, and adjust and limit the clamping air pressure according to the pressure gauge reading. S3. Put raw materials into the hopper, start the motor, and the external air flow is drawn by the wind wheel and enters the top cylinder. Further limit and correct the position of the steel roll to be processed through the air cushion and the air bag, and block the die barrel. S4. Under the action of pressure, the raw material slurry enters the shunt box and is injected into the die barrel through the injection port, filling the gap between the die barrel and the steel roller to be processed; S5. Under the impact of gasification pressure, the die barrel will drive the steel roller to be processed to rotate synchronously under the drive of the runner, and dynamic injection molding is carried out. Difluoromethane absorbs the heat emitted by the raw material slurry inside the die barrel, prompting the raw material slurry to quickly cool and solidify; S6. After the raw material slurry cools and solidifies, the end cover is opened, and the steel roller is taken out to complete the processing of the polymer coating.

[0005] Preferably, a dynamic injection molding mechanism is installed inside the matrix; The dynamic injection molding mechanism includes a die frame; The die frame is embedded and installed on the side end face of the matrix. A number of die barrels are evenly installed at equal intervals inside the die frame. Bases are rotatably installed at both ends of the die barrel. End covers are installed on the side end faces of the bases through threads. A top cylinder is embedded and installed in the middle of the side end face of the end cover through threads. A runner and a toothed ring are respectively installed on both sides of the outer curved surface of the die barrel. A through groove is opened at the top of the side end face of one base, and a cover box is embedded and installed at the corner of the side end face of the other base; An impeller is rotatably installed inside the cover box. A gear is installed at the end of the impeller. A notch is opened on one side of the outer curved surface of the cover box. A connecting cavity is opened inside the base. A conduit is connected to the top of the connecting cavity. A guide valve is installed at the end of the conduit. An outer cavity is opened on the side wall of the matrix.

[0006] Preferably, a number of die chambers are enclosed at the position inside the die frame by the inner wall of the die frame, the outer wall of the die barrel and the end face of the base. The die chambers are filled with difluoromethane in a gas-liquid equilibrium state. The die frame is made of heat-insulating material.

[0007] Preferably, an annular plug is slidably installed inside the top cylinder. A hollow tube is installed in the middle of the side end face of the annular plug. An air cushion is installed at the end of the hollow tube. A ring is slidably installed at the position outside the annular plug inside the top cylinder. Push tubes are symmetrically embedded and installed on the side end face of the ring. An annular seat is installed at the end of the push tube. Air bags are embedded and installed on both the outer and inner curved surfaces of the annular seat.

[0008] Preferably, a ring channel is opened inside the base corresponding to the position of the runner, and the ring channel is communicated with the die chamber through the through groove. The inner cavity of the cover box is communicated with the die chamber through the notch. The connecting cavities inside the two bases are respectively communicated with the ring channel and the inner cavity of the cover box. The connecting cavity is communicated with the outer cavity through the conduit and the guide valve, and the guide valve is a one-way valve. The outer cavity is filled with difluoromethane in a gas-liquid equilibrium state. The gear is meshed with the toothed ring through the teeth.

[0009] Preferably, the inner cavity of the air cushion is communicated with the inner cavity of the top cylinder through a hollow tube, the inner cavity of the annular seat is communicated with the inner cavity of the top cylinder through a push tube, and the inner cavity of the annular seat is directly communicated with the inner cavity of the airbag. The external thread direction of the top cylinder is opposite to the deflection direction of the runner, and the part where the end cover is connected to the top cylinder can rotate relative to the part where the end cover is connected to the base.

[0010] Preferably, a linkage compression molding mechanism is installed on the outer side of the mold cylinder; The linkage compression molding mechanism includes an annular shell; An annular shell is installed in the middle of the outer curved surface of the mold cylinder. A sealing sleeve is rotatably sleeved on the outer curved surface of the annular shell. A feeding pipe is installed at the bottom of the outer curved surface of the sealing sleeve. A plurality of connecting pipes are installed on the side end surface of the annular shell at equal angles along the circumferential direction. Guide boxes are symmetrically installed on both sides of the outer curved surface of the mold cylinder. Injection ports are opened on the outer wall of the mold cylinder corresponding to the positions of the guide boxes. A material cylinder is installed on one side of the base body. A spiral cylinder is rotatably installed inside the material cylinder. A wind wheel is installed at the end of the spiral cylinder. A diversion box is installed at the position corresponding to the wind wheel at the end of the material cylinder. A motor is installed in the middle of the side end surface of the diversion box; A filter head is installed at the top of the side end surface of the diversion box. An air supply pipe is connected to the bottom of the outer curved surface of the diversion box. An air chamber is opened on the side wall of the base body at the inner side of the outer cavity. A plurality of connecting valves are equidistantly and uniformly installed on both side end surfaces of the base body corresponding to the positions of the air chamber. A threaded pipe is installed at the end of the connecting valve. A corrugated pipe is rotatably connected to the middle of the side end surface of the top cylinder. A connecting head is rotatably installed at the end of the corrugated pipe; A strip cavity is opened in the base body at the position on one side of the air chamber. Plug blocks are symmetrically and slidably installed inside the strip cavity. A pressure relief port is opened at the top of the strip cavity corresponding to the positions of the plug blocks. A coil is wound around the outer wall of the material cylinder. A heating cylinder is embedded and installed on the inner wall of the material cylinder. A diversion box is installed at the other end of the material cylinder. A hopper is installed at the top of the outer curved surface of the material cylinder near the diversion box.

[0011] Preferably, the output shaft of the motor is fixedly connected to the wind wheel, and the connection part between the wind wheel and the spiral cylinder is made of heat-insulating material. The filter head is filled with activated carbon. The input end of the motor is electrically connected to the output end of the external power supply through the coil.

[0012] Preferably, the diversion box is connected to the air chamber through the air supply pipe. The inner cavity of the air chamber is communicated with the inner cavity of the strip cavity. The threaded pipe is fitted with the connecting head.

[0013] Preferably, the thickness of the plug block is greater than the inner diameter of the pressure relief port. Air nozzles are embedded and installed at both ends of the strip cavity. A pressure gauge is installed at the top of the strip cavity at the position between the plug block and the air nozzle.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is scientific and reasonable, and it is safe and convenient to use; 1. A dynamic injection molding mechanism is provided. Through the cooperation of a mold cylinder, a runner, a toothed ring, an impeller, and gears, a kinetic energy conversion structure can be constructed to guide and direct difluoromethane. On the one hand, the heat dissipated by the raw material slurry can be converted into the original energy for the gas-liquid conversion of difluoromethane. By utilizing the air thermal energy, the raw material slurry can be quickly cooled and shaped, changing natural heat dissipation into active heat dissipation. This not only greatly improves the heat dissipation efficiency, but also, due to the deflection movement of the mold cylinder, static cooling can be changed into dynamic cooling, significantly enhancing the heat dissipation balance of the raw material slurry at all positions inside the mold cylinder, greatly improving the stability and efficiency of the injection molding work of high molecular raw materials. At the same time, the dependence on external energy can be eliminated, effectively strengthening the energy-saving effect of the injection molding work of high molecular raw materials and reducing the processing cost. On the other hand, the pressure of difluoromethane can be converted into a driving force to cause the mold cylinder and the steel roller to be processed to rotate, changing static injection molding into dynamic injection molding. This can not only avoid the adverse effects of gravity on the raw material slurry, greatly reducing the eccentricity of the raw material after molding, but also convert the centrifugal force into an auxiliary driving force to compensate for the injection pressure, enabling the raw material slurry to be more fully and stably filled into the gap between the mold cylinder and the steel roller to be processed, effectively improving the adhesion between the raw material slurry and the mold cylinder. While improving the forming effect of the high molecular coating and avoiding forming defects, the adhesion between the high molecular coating and the steel roller to be processed can be strengthened.

[0015] 2. Through the cooperation of a mold frame, a mold cylinder, a base, and an end cap, an assembled model structure can be formed. On the one hand, while providing a stable shaping chamber for the high molecular raw material slurry, it can improve the loading stability and convenience of the steel roller. With the limiting and pressing effects of the top cylinder, the annular plug, the hollow tube, the ring, the push tube, the annular seat, the air cushion, and the airbag, not only can the dynamic calibration of the position of the steel roller to be processed be realized, further improving the forming accuracy of the high molecular coating and greatly enhancing the injection molding quality, but on the other hand, it can be compatible with steel rollers of different lengths, realizing the processing work for steel rollers of different lengths, effectively expanding the applicable range of the device. Through the cooperation of a through groove, a cover box, a notch, a connecting cavity, a conduit, a guide valve, an outer cavity, and a mold chamber, a complete difluoromethane circulation loop can be formed, effectively improving the stability of the difluoromethane circulation, strengthening the effective recovery and utilization rate of the heat of the raw material slurry and the conversion efficiency of the air thermal energy, simultaneously strengthening the working reliability of the dynamic cooling work and the dynamic injection molding work, and enhancing the compatibility and connection reliability among the components of the dynamic injection molding mechanism.

[0016] 3. A linkage compression mechanism is provided. Through the cooperation of a wind wheel, a diversion box, an air supply pipe, an air chamber, a connection valve, a threaded pipe, a corrugated pipe and a connector, a synchronous wind power conversion structure can be formed, which can make full use of the driving force of the motor. On the one hand, it can provide sufficient and stable clamping pressure for the injection molding of polymer raw materials, make the clamping pressure compatible with the gradually increasing injection pressure during the injection process, realize dynamic clamping, effectively improve the reliability of the clamping work, make the injection molding work of the polymer raw material slurry more stable, and at the same time, the orientation of the steel roller to be processed relative to the mold cylinder can be further corrected and adjusted by means of air pressure, greatly reducing the eccentricity probability and strengthening the effectiveness of the polymer coating formation. On the other hand, it can provide sufficient fresh air for the heat exchange cycle of difluoromethane, further improve the effective conversion range of air heat energy during the gas-liquid conversion of difluoromethane, and further strengthen the cooling effect of injection molding; Through the cooperation of a strip cavity, a plug and a pressure relief port, a pressure limiting structure can be formed, which can dynamically limit the clamping pressure during the injection process. On the premise of ensuring safety, it can greatly improve the reliability of the clamping pressure and make the clamping pressure dynamically adjustable, further strengthening the effectiveness of clamping. Through the cooperation of an annular shell, a sealing sleeve, a feeding pipe, a connecting pipe, a guiding box and an injection port, a dynamic feeding structure can be formed, effectively improving the adaptability and compatibility between the linkage compression mechanism and the dynamic injection mechanism, and improving the adaptability between the feeding work and the dynamic injection work. Through the cooperation of a barrel, a spiral barrel, a motor, a filter head, a coil, a heating barrel and a shunt box, a raw material pressure feeding structure can be constructed, which can realize double internal and external heating of the raw materials and synchronous shunt pressure feeding of the materials, greatly improving the reliability and stability of the feeding work and further strengthening the injection quality.

[0017] In summary, through the cooperation of the dynamic injection mechanism and the linkage compression mechanism, dynamic shaping and cooling, dynamic injection molding, dynamic clamping and dynamic feeding work can be realized, dynamic calibration of the steel roller orientation can be achieved, the forming accuracy of polymer raw materials can be greatly improved, the stability of the clamping pressure can be fully guaranteed, the recovery and utilization of the heat dissipated by the polymer raw materials can be realized, the rapid cooling and shaping of the polymer slurry can be realized without consuming additional energy, the forming effect of the polymer coating can be greatly improved, and the energy-saving effect can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0019] In the drawings: Figure 1 is a flowchart of the steel roller processing method of the present invention; Figure 2 is a schematic structural diagram of the present invention; Figure 3 It is a schematic diagram of the hopper installation structure of the present invention; Figure 4 It is a schematic diagram of the dynamic injection molding mechanism structure of the present invention; Figure 5 It is a schematic diagram of the runner installation structure of the present invention; Figure 6 It is a schematic diagram of the hollow tube installation structure of the present invention; Figure 7 It is a schematic diagram of the linkage compression molding mechanism structure of the present invention; Figure 8 It is a schematic diagram of the ring shell installation structure of the present invention; Reference numerals in the figure: 1, base body; 11, hopper; 200, dynamic injection molding mechanism; 201, mold frame; 202, mold cylinder; 203, base; 204, end cover; 205, top cylinder; 206, runner; 207, toothed ring; 208, through groove; 209, cover box; 210, impeller; 211, gear; 212, notch; 213, connecting cavity; 214, conduit; 215, guide valve; 216, outer cavity; 217, mold chamber; 218, annular plug; 219, hollow tube; 220, ring; 221, push tube; 222, annular seat; 223, air cushion; 224, air bag; 20, annular channel; 300, linkage compression molding mechanism; 301, ring shell; 302, sealing sleeve; 303, feeding pipe; 304, connecting pipe; 305, guide box; 306, injection port; 307, barrel; 308, spiral barrel; 309, wind wheel; 310, diversion box; 311, motor; 312, filter head; 313, air supply pipe; 314, air chamber; 315, connecting valve; 316, threaded pipe; 317, corrugated pipe; 318, connector; 319, strip cavity; 320, plug; 321, pressure relief port; 322, coil; 323, heating barrel; 324, shunt box; 30, air nozzle; 31, pressure gauge. Detailed implementation manners

[0020] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Embodiment: As Figure 1-8 shown, the present invention provides a technical solution, a method for processing a steel roller with a polymer coating, including the following steps: S1. Sequentially load the corresponding number of steel rollers to be processed into the interior of the mold cylinder 202 on the base body 1, reset and fix the end cover 204 on the base 203, and rotate the top cylinder 205 to preliminarily finely adjust and fix the position of the steel roller to be processed; S2. Connect the air chamber 314 to the inner cavity of the top cylinder 205 through the connecting valve 315 and the threaded pipe 316. Inject air into the inside of the strip chamber 319 through the air nozzle 30, adjust the air pressure received by the end face of the plug 320, and adjust and limit the clamping pressure according to the reading of the pressure gauge 31; S3. Put raw materials into the hopper 11, start the motor 311. The external air flow is drawn by the wind wheel 309 and enters the top cylinder 205. The position of the steel roller to be processed is further limited and corrected through the air cushion 223 and the air bag 224, and the die cylinder 202 is locked; S4. The raw material slurry enters the shunt box 324 under pressure and is injected into the die cylinder 202 through the injection port 306 to fill the gap between the die cylinder 202 and the steel roller to be processed; S5. Under the impact of the gasification pressure, the die cylinder 202 will drive the steel roller to be processed to rotate synchronously under the drive of the runner 206 for dynamic injection molding. Difluoromethane absorbs the heat emitted by the raw material slurry inside the die cylinder 202, promoting the rapid cooling and solidification of the raw material slurry; S6. After the raw material slurry cools and solidifies, open the end cover 204, take out the steel roller, and complete the processing of the polymer coating.

[0022] A dynamic injection molding mechanism 200 is installed inside the substrate 1; The dynamic injection molding mechanism 200 includes a die frame 201; The die frame 201 is embedded and installed on the side end face of the substrate 1. A number of die cylinders 202 are evenly installed at equal intervals inside the die frame 201. Base seats 203 are rotatably installed at both ends of the die cylinder 202. An end cover 204 is installed on the side end face of the base seat 203 through threads. A top cylinder 205 is embedded and installed in the middle of the side end face of the end cover 204 through threads. A runner 206 and a gear ring 207 are respectively installed on both sides of the outer curved surface of the die cylinder 202. A through groove 208 is opened at the top of the side end face of one base seat 203, and a cover box 209 is embedded and installed at the corner of the side end face of the other base seat 203; An impeller 210 is rotatably installed inside the cover box 209. A gear 211 is installed at the end of the impeller 210. A notch 212 is opened on one side of the outer curved surface of the cover box 209. A connecting cavity 213 is opened inside the base seat 203. The top of the connecting cavity 213 is connected with a conduit 214. A guide valve 215 is installed at the end of the conduit 214. An outer cavity 216 is opened on the side wall of the substrate 1.

[0023] The inner wall of the mold frame 201, the outer wall of the mold cylinder 202, and the end face of the base 203 enclose a number of mold chambers 217 at the internal position of the mold frame 201. The mold chambers 217 are filled with difluoromethane in a gas-liquid equilibrium state. The mold frame 201 is made of heat-insulating material to achieve rapid cooling and shaping. An annular plug 218 is slidably installed inside the top cylinder 205. A hollow tube 219 is installed in the middle of the side end face of the annular plug 218. An air cushion 223 is installed at the end of the hollow tube 219. A circular ring 220 is slidably installed inside the top cylinder 205 at the position outside the annular plug 218. Push tubes 221 are symmetrically embedded in the side end face of the circular ring 220. An annular seat 222 is installed at the end of the push tube 221. Air bags 224 are embedded in both the outer and inner curved surfaces of the annular seat 222 to achieve dynamic calibration of the orientation; A ring channel 20 is opened inside the base 203 corresponding to the position of the runner 206, and the ring channel 20 communicates with the mold chamber 217 through a through groove 208. The inner cavity of the cover box 209 communicates with the mold chamber 217 through a notch 212. The connecting cavities 213 inside the two bases 203 communicate with the ring channel 20 and the inner cavity of the cover box 209 respectively. The connecting cavity 213 communicates with the outer cavity 216 through a conduit 214 and a guide valve 215, and the guide valve 215 is a one-way valve. The outer cavity 216 is filled with difluoromethane in a gas-liquid equilibrium state. The gear 211 is meshed with the toothed ring 207 through its teeth to achieve dynamic heat dissipation and dynamic injection molding; The inner cavity of the air cushion 223 communicates with the inner cavity of the top cylinder 205 through the hollow tube 219. The inner cavity of the annular seat 222 communicates with the inner cavity of the top cylinder 205 through the push tube 221, and the inner cavity of the annular seat 222 is directly communicated with the inner cavity of the air bag 224. The external thread direction of the top cylinder 205 is opposite to the deflection direction of the runner 206, and the connection part between the end cover 204 and the top cylinder 205 can rotate relative to the connection part between the end cover 204 and the base 203 to improve the forming stability of the polymer coating; A linkage compression molding mechanism 300 is installed outside the mold cylinder 202; The linkage compression molding mechanism 300 includes an annular shell 301; An annular shell 301 is installed in the middle of the outer curved surface of the mold cylinder 202. A sealing sleeve 302 is rotatably sleeved on the outer curved surface of the annular shell 301. A feeding pipe 303 is installed at the bottom of the outer curved surface of the sealing sleeve 302. A number of connecting pipes 304 are installed on the side end face of the annular shell 301 at equal angles along the circumferential direction. Guide boxes 305 are symmetrically installed on both sides of the outer curved surface of the mold cylinder 202. Injection ports 306 are opened on the outer wall of the mold cylinder 202 corresponding to the positions of the guide boxes 305. A material cylinder 307 is installed on one side of the base body 1. A spiral cylinder 308 is rotatably installed inside the material cylinder 307. A wind wheel 309 is installed at the end of the spiral cylinder 308. A diversion box 310 is installed at the end of the material cylinder 307 corresponding to the position of the wind wheel 309. A motor 311 is installed in the middle of the side end face of the diversion box 310; A filter head 312 is installed at the top of the side end face of the diversion box 310. An air supply pipe 313 is connected to the bottom of the outer curved surface of the diversion box 310. An air chamber 314 is formed on the side wall of the base body 1 at the inner position of the outer cavity 216. A number of connecting valves 315 are evenly installed at equal intervals on both side end faces of the base body 1 corresponding to the position of the air chamber 314. A threaded pipe 316 is installed at the end of the connecting valve 315. The middle of the side end face of the top cylinder 205 is rotatably connected to a corrugated pipe 317. A connecting head 318 is rotatably installed at the end of the corrugated pipe 317. A strip cavity 319 is formed inside the base body 1 at the position on one side of the air chamber 314. The diversion box 310 is connected to the air chamber 314 through the air supply pipe 313. The inner cavity of the air chamber 314 is communicated with the inner cavity of the strip cavity 319. The threaded pipe 316 is fitted with the connecting head 318 to dynamically limit the clamping pressure; Blocking blocks 320 are symmetrically and slidably installed inside the strip cavity 319. A pressure relief port 321 is formed at the top of the strip cavity 319 corresponding to the position of the blocking blocks 320. The thickness of the blocking blocks 320 is greater than the inner diameter of the pressure relief port 321. Air nozzles 30 are embedded at both ends of the strip cavity 319. A pressure gauge 31 is installed at the top of the strip cavity 319 at the position between the blocking blocks 320 and the air nozzles 30 to accurately control the clamping pressure; A coil 322 is wound around the outer wall of the barrel 307. The output shaft of the motor 311 is fixedly connected to the wind wheel 309, and the connection part between the wind wheel 309 and the spiral cylinder 308 is made of heat-insulating material. The filter head 312 is filled with activated carbon. The input end of the motor 311 is electrically connected to the output end of an external power supply through the coil 322 to achieve dynamic clamping. A heating cylinder 323 is embedded in the inner wall of the barrel 307. A diversion box 324 is installed at the other end of the barrel 307. A hopper 11 is installed at the top of the outer curved surface of the barrel 307 near one side of the diversion box 310.

[0024] The working principle and usage process of the present invention: Before processing the polymer coating on the outer surface of the steel roller, first rotate the end cover 204 on one side of the die cylinder 202, remove it from the base 203, send the steel roller to be processed into the die cylinder 202, and put the annular seat 222 on the steel roller to be processed, so that the hollow tube 219 abuts against the steel roller to be processed, and then reset and fix the end cover 204 on the base 203. According to the actual processing requirements, repeat the above steps to load the corresponding number of steel rollers to be processed into the die cylinder 202 in turn; Then rotate the top cylinder 205 to make it slide relative to the end cover 204 under the drive of the thread, forcing the air cushion 223 to press against the steel roller to be processed under the push of the hollow tube 219, preliminarily finely adjusting and fixing the position of the steel roller to be processed, and connecting the connector 318 to the nearest threaded tube 316. Connect the air chamber 314 to the inner cavity of the top cylinder 205 through the connecting valve 315 and the threaded tube 316. Then use an external inflation device to inject air into the strip cavity 319 through the air nozzle 30, adjust the air pressure on the end face of the plug 320, so that the plug 320 blocks the pressure relief port 321 under this air pressure. This air pressure is the clamping pressure during the processing of the polymer coating. Adjust and limit the clamping pressure according to the indication of the pressure gauge 31; Subsequently, raw materials can be put into the hopper 11, and the motor 311 is started to carry out the processing and injection molding of the polymer coating. Driven by the motor 311, the spiral cylinder 308 and the wind wheel 309 will rotate synchronously. Under the traction of the wind wheel 309, the external air flow is filtered by the activated carbon inside the filter head 312, then sucked into the diversion box 310, and then pressed into the air chamber 314 through the air supply pipe 313. Under the connection of the connecting valve 315 and the threaded tube 316, the air flow inside the air chamber 314 will synchronously enter the corresponding top cylinders 205; Furthermore, the annular plug 218 is pushed by the hollow tube 219 to drive the air cushion 223 under the action of the air flow pressure. The air flow will also enter the air cushion 223 synchronously through the hollow tube 219, causing the air cushion 223 to expand under the action of the air pressure. Coupled with the pushing action of the hollow tube 219, the air cushion 223 presses the end of the steel roller to be processed with greater pressure. At the same time, the circular ring 220 will also push the annular seat 222 through the push tube 221 under the action of the air pressure, making the annular seat 222 press against the steel roller to be processed. Coupled with the air flow entering the air bag 224 through the push tube 221, the air bag 224 will expand correspondingly, synchronously squeezing the steel roller to be processed and the die cylinder 202, further limiting and correcting the position of the steel roller to be processed, and blocking the die cylinder 202; At the same time, the raw materials in the hopper 11 fall into the material cylinder 307 under the action of gravity. As the spiral cylinder 308 rotates, the external spiral blades of the spiral cylinder 308 will squeeze the raw materials and press the raw materials along the material cylinder 307 into the shunt box 324. During this process, the spiral cylinder 308 and the heating cylinder 323 will generate heat correspondingly under the action of the magnetic field generated by the external coil 322, double heating the raw materials, causing the raw materials to gradually melt into raw material slurry during the transportation along the material cylinder 307. The raw material slurry enters the shunt box 324 under the action of pressure, and then under the drive of the pressure, enters the corresponding ring shell 301 through each feeding pipe 303. Under the connection of the feeding pipe 303, the raw material slurry will flow into the guide box 305 along the feeding pipe 303 and be injected into the die cylinder 202 through the injection port 306 to fill the gap between the die cylinder 202 and the steel roller to be processed; As the raw material slurry is injected into the die barrel 202, the heat it emits will be absorbed by the difluoromethane in the gas-liquid equilibrium state inside the die chamber 217, thereby breaking the equilibrium state of difluoromethane. After absorbing heat, difluoromethane quickly vaporizes, causing the pressure inside the die chamber 217 to rise. Under the action of this pressure, the vaporized difluoromethane will pass through the through groove 208 and enter the annular channel 20. The runner 206 will rotate accordingly under its impact. In addition, since the die barrel 202 and the steel roller to be processed are locked by the air cushion 223 and the air bag 224, the die barrel 202 will drive the steel roller to be processed to rotate synchronously under the drive of the runner 206 for dynamic injection molding; Subsequently, the gaseous difluoromethane will enter the connecting cavity 213 on one side of the runner 206. Under the flow-limiting and guiding action of the guiding valve 215, the difluoromethane will enter the outer cavity 216 through the corresponding conduit 214, forcing the pressure inside the outer cavity 216 to rise and breaking the equilibrium state of difluoromethane inside the outer cavity 216. As a result, the difluoromethane inside the outer cavity 216 will gradually liquefy and release heat under the action of pressure. Subsequently, under the flow-limiting and guiding action of the guiding valve 215 on the other side, the liquefied difluoromethane will enter the connecting cavity 213 on one side of the impeller 210 under the action of pressure through the corresponding conduit 214; While the runner 206 drives the die barrel 202 and the steel roller to be processed to rotate, the toothed ring 207 will also rotate synchronously with the die barrel 202, forcing the gear 211 to drive the impeller 210 to deflect inside the cover box 209 at a faster speed under the drive of the toothed ring 207. As a result, the liquid difluoromethane inside the connecting cavity 213 on one side of the impeller 210 will enter the cover box 209 and then be pressed into the die chamber 217 by the impeller 210 with a greater pressure through the notch 212. The liquid difluoromethane will absorb the heat emitted by the raw material slurry inside the die barrel 202 again and vaporize, forming a closed-loop circuit of difluoromethane gas-liquid conversion, which promotes the rapid cooling and shaping of the raw material slurry; It should be added here that: in the above process, as the air flow is continuously sent into the air chamber 314 by the wind wheel 309, the air pressure inside the air chamber 314 continuously rises, and the extrusion force exerted by the air cushion 223 and the air bag 224 on the die barrel 202 and the steel roller to be processed will also rise accordingly. When the air pressure inside the strip cavity 319 is sufficient to offset the air pressure received by the other end face of the plug 320, that is, when the air pressure inside the air cushion 223 and the air bag 224 is equal to the mold clamping pressure, the plug 320 will slide accordingly under its push, and the air flow will be discharged through the pressure relief port 321, enabling the air cushion 223 and the air bag 224 to exert a stable extrusion force on the die barrel 202 and the steel roller to be processed; During the processing of the polymer coating, according to actual needs, the mold clamping pressure can be made greater than the injection pressure within the safe air pressure range. Since the wind wheel 309 rotates synchronously with the spiral barrel 308, that is, during the injection molding process, as the raw material slurry is continuously sent into the die barrel 202, the air flow is also continuously sent into the air chamber 314, that is, the mold clamping pressure will rise synchronously with the injection pressure, enabling the mold clamping pressure and the injection pressure to be fully compatible and improving the mold clamping stability; As the mold cylinder 202 and the steel roller to be processed rotate under the drive of the runner 206, under the action of centrifugal force and the extrusion of injection pressure, the raw material slurry can more fully fill the gap between the mold cylinder 202 and the steel roller to be processed, thereby improving the fit between the raw material slurry and the mold cylinder 202 and strengthening the adhesion between the raw material slurry and the steel roller to be processed. At the same time, the raw material slurry can be prevented from eccentrically sagging under the action of gravity and uniform heat dissipation can be ensured. When the external air flow flows through the wind chamber 314, the heat emitted by the liquefied difluoromethane inside the outer cavity 216 will be carried away by the air flow, realizing fresh air heat exchange and further enhancing the cooling and solidification effect of the raw material slurry. After completing the above work, the raw material slurry inside the mold cylinder 202 is pressurized, and after the raw material slurry is cooled and solidified, the gas inside the strip cavity 319 is released through the air nozzle 30 to reduce the air pressure on the end face of the block 320. Under the action of the air pressure on the other side, the block 320 will approach the air nozzle 30, release the blockage of the pressure relief port 321, discharge the air flow inside the air chamber 314, release the extrusion force exerted by the air cushion 223 and the air bag 224 on the mold cylinder 202 and the steel roller to be processed, open the end cover 204, take out the steel roller, and complete the processing of the polymer coating.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A processing method for a steel roller with a polymer coating, characterized in that: It includes the following steps: S1. Sequentially load the corresponding number of steel rollers to be processed into the inner part of the die barrel (202) on the base body (1), reset and fix the end cover (204) on the base (203), and rotate the top cylinder (205) to preliminarily finely adjust and fix the position of the steel roller to be processed; S2. Connect the air chamber (314) to the inner cavity of the top cylinder (205) through the connecting valve (315) and the threaded pipe (316), inject air into the strip cavity (319) through the air nozzle (30), adjust the air pressure received by the end face of the plug block (320), and adjust and limit the clamping pressure according to the indication of the pressure gauge (31); S3. Put raw materials into the hopper (11), start the motor (311), and under the traction of the wind wheel (309), the external air flow enters the top cylinder (205), further limit and correct the position of the steel roller to be processed through the air cushion (223) and the air bag (224), and block the die barrel (202); S4. The raw material slurry enters the shunt box (324) under pressure and is injected into the die barrel (202) through the injection port (306) to fill the gap between the die barrel (202) and the steel roller to be processed; S5. Under the impact of the gasification pressure, the die barrel (202) will drive the steel roller to be processed to rotate synchronously under the drive of the runner (206) for dynamic injection molding. Difluoromethane absorbs the heat dissipated by the raw material slurry inside the die barrel (202), prompting the raw material slurry to quickly cool and solidify; S6. After the raw material slurry cools and solidifies, open the end cover (204), take out the steel roller, and complete the processing of the polymer coating.

2. The processing method of a steel roller with a polymer coating according to claim 1, characterized in that, A dynamic injection molding mechanism (200) is installed inside the base body (1); The dynamic injection molding mechanism (200) includes a die frame (201); The die frame (201) is embedded and installed on the side end face of the base body (1). A number of die barrels (202) are equidistantly and uniformly installed inside the die frame (201). The two ends of the die barrel (202) are rotatably installed with bases (203). The side end face of the base (203) is threadedly installed with an end cover (204). The middle part of the side end face of the end cover (204) is threadedly embedded and installed with a top cylinder (205). The two sides of the outer curved surface of the die barrel (202) are respectively installed with a runner (206) and a gear ring (207). A through groove (208) is opened at the top of the side end face of one base (203), and a cover box (209) is embedded and installed at the corner of the side end face of the other base (203); An impeller (210) is rotatably installed inside the cover box (209). A gear (211) is installed at the end of the impeller (210). A notch (212) is opened on one side of the outer curved surface of the cover box (209). A connecting cavity (213) is opened inside the base (203). The top of the connecting cavity (213) is connected with a conduit (214). A guiding valve (215) is installed at the end of the conduit (214). An outer cavity (216) is opened on the side wall of the base body (1).

3. A processing method of a steel roller with a polymer coating according to claim 2, characterized in that, The inner wall of the mold frame (201), the outer wall of the mold cylinder (202), and the end face of the base (203) enclose a number of mold chambers (217) at the internal position within the mold frame (201). The interior of the mold chambers (217) is filled with difluoromethane in a gas-liquid equilibrium state, and the mold frame (201) is made of heat-insulating material.

4. A method for processing a steel roll with a polymer coating according to claim 2, characterized in that, A ring-shaped plug (218) is slidably installed inside the top cylinder (205). In the middle of the side end face of the ring-shaped plug (218), a hollow tube (219) is installed. An air cushion (223) is installed at the end of the hollow tube (219). A ring (220) is slidably installed inside the top cylinder (205) at a position outside the ring-shaped plug (218). Push tubes (221) are symmetrically embedded and installed on the side end face of the ring (220). A ring-shaped seat (222) is installed at the end of the push tube (221). Air bags (224) are embedded and installed on both the outer and inner curved surfaces of the ring-shaped seat (222).

5. A method for processing a steel roller with a polymer coating according to claim 3, characterized in that, A ring channel (20) is opened inside the base (203) corresponding to the position of the runner (206), and the ring channel (20) communicates with the mold chamber (217) through a through groove (208). The inner cavity of the cover box (209) communicates with the mold chamber (217) through a notch (212). The connecting cavities (213) inside the two bases (203) communicate with the ring channel (20) and the inner cavity of the cover box (209) respectively. The connecting cavity (213) communicates with the outer cavity (216) through a conduit (214) and a guide valve (215), and the guide valve (215) is a one-way valve. The outer cavity (216) is filled with difluoromethane in a gas-liquid equilibrium state. The gear (211) is meshed and connected with the toothed ring (207) through its teeth.

6. A processing method of a steel roller with a polymer coating according to claim 4, characterized in that, The inner cavity of the air cushion (223) communicates with the inner cavity of the top cylinder (205) through the hollow tube (219). The inner cavity of the ring-shaped seat (222) communicates with the inner cavity of the top cylinder (205) through the push tube (221), and the inner cavity of the ring-shaped seat (222) is directly communicated with the inner cavity of the air bag (224). The external thread direction of the top cylinder (205) is opposite to the deflection direction of the runner (206), and the connection part between the end cover (204) and the top cylinder (205) can rotate relative to the connection part between the end cover (204) and the base (203).

7. A processing method of a steel roller with a polymer coating according to claim 1, characterized in that A linkage compression molding mechanism (300) is installed outside the mold cylinder (202); The linkage compression molding mechanism (300) includes a ring shell (301); A ring shell (301) is installed in the middle of the outer curved surface of the die barrel (202). A sealing sleeve (302) is rotatably sleeved on the outer curved surface of the ring shell (301). A feeding pipe (303) is installed at the bottom of the outer curved surface of the sealing sleeve (302). A plurality of connecting pipes (304) are installed on the side end face of the ring shell (301) at equal angles along the circumferential direction. Guide boxes (305) are symmetrically installed on both sides of the outer curved surface of the die barrel (202). Injection ports (306) are formed in the outer wall of the die barrel (202) corresponding to the positions of the guide boxes (305). A material cylinder (307) is installed on one side of the base body (1). A spiral cylinder (308) is rotatably installed inside the material cylinder (307). A wind wheel (309) is installed at the end of the spiral cylinder (308). A diversion box (310) is installed at the position corresponding to the wind wheel (309) at the end of the material cylinder (307). A motor (311) is installed in the middle of the side end face of the diversion box (310); A filter head (312) is installed at the top of the side end face of the diversion box (310). An air supply pipe (313) is connected to the bottom of the outer curved surface of the diversion box (310). An air chamber (314) is formed in the side wall of the base body (1) at the inner side of the outer cavity (216). A plurality of connecting valves (315) are evenly installed at equal distances on both side end faces of the base body (1) corresponding to the positions of the air chamber (314). A threaded pipe (316) is installed at the end of the connecting valve (315). A corrugated pipe (317) is rotatably connected to the middle of the side end face of the top cylinder (205). A connecting head (318) is rotatably installed at the end of the corrugated pipe (317); A strip cavity (319) is formed inside the base body (1) at the side of the air chamber (314). Plug blocks (320) are symmetrically and slidably installed inside the strip cavity (319). A pressure relief port (321) is formed at the top of the strip cavity (319) corresponding to the positions of the plug blocks (320). A coil (322) is wound around the outer wall of the material cylinder (307). A heating cylinder (323) is embedded and installed on the inner wall of the material cylinder (307). A diversion box (324) is installed at the other end of the material cylinder (307). A hopper (11) is installed at the top of the outer curved surface of the material cylinder (307) near the diversion box (310) on one side; 8. A method for processing a steel roll with a polymer coating according to claim 7, characterized in that, The output shaft of the motor (311) is fixedly connected to the wind wheel (309), and the connecting part between the wind wheel (309) and the spiral cylinder (308) is made of heat-insulating material. The filter head (312) is filled with activated carbon. The input end of the motor (311) is electrically connected to the output end of the external power supply through the coil (322).

9. A method for processing a steel roller with a polymer coating according to claim 7, characterized in that, The diversion box (310) is connected to the air chamber (314) through the air supply pipe (313). The inner cavity of the air chamber (314) is communicated with the inner cavity of the strip cavity (319). The threaded pipe (316) is fitted with the connecting head (318).

10. A method for processing a steel roll with a polymer coating according to claim 7, characterized in that, The thickness of the plug block (320) is greater than the inner diameter of the pressure relief port (321). Air nozzles (30) are embedded and installed at both ends of the strip cavity (319). A pressure gauge (31) is installed at the top of the strip cavity (319) at the position between the plug block (320) and the air nozzle (30).

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