Stepping motor processing and coating device

Abstract

The invention discloses a stepping motor machining and coating device, and belongs to the technical field of stepping motor machining and coating. A stepping motor machining and coating device comprises a conveying table, a mounting shell and a sealing cover are arranged at the top of the conveying table, a wind screen assembly is fixedly mounted on the inner wall of the mounting shell, a plurality of drying assemblies comprise heating covers, a condensation assembly is further fixedly connected to the outer wall of the front portion of the conveying table, and a cooling vortex tube and a dehumidification assembly are arranged at the top of a mounting box. By means of the innovative mode of primary condensation and mixing of exhaust gas and cold source gas and in cooperation with the dehumidification assembly, the temperature and humidity of the dried exhaust gas can be remarkably reduced, the air screen can be matched with the installation shell and the sealing cover, external dust and dust can be effectively shielded and protected, and the air screen is formed while the air screen is formed. And the surface of the rotor can be ensured to be charged uniformly, so that coating particles can be adsorbed to the surface of the rotor more uniformly and quickly, the coating efficiency and uniformity are improved, and the waste of the coating is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of stepper motor processing and coating, in particular to a stepper motor processing and coating device. Background Art

[0002] A stepper motor is an open-loop controlled motor that converts electrical pulse signals into angular displacement or linear displacement. It is the main executive element in modern digital program control systems and is widely used. The motor rotor is the rotating component in the motor. The motor consists of two parts, the rotor and the stator. It is a device used to realize the conversion of electrical energy into mechanical energy and mechanical energy into electrical energy. After the motor rotor is produced and formed, in order to prevent it from rusting, anti-rust paint will be coated on the rotor surface, so a stepper motor processing and coating device will be used.

[0003] Existing stepper motor coating systems typically use electrostatic spraying to apply anti-rust paint to the motor rotor surface. This involves inserting support rods at both ends of the rotor, placing them on the corresponding screws of a screw conveyor, and then applying the coating with an electrostatic spray head. After coating, the coating is dried by heating and blowing. However, in actual use, this coating system has the following shortcomings:

[0004] First, during the rotor drying stage, the device will emit high-temperature moisture. To prevent the direct discharge of high-temperature moisture, an external condensation device is usually installed to reduce the temperature and humidity of the exhaust gas to avoid discomfort to the working environment of the staff. However, relying solely on condensation has obvious limitations. On the one hand, it is difficult to reduce the moisture in the exhaust gas, and the condensation method is difficult to completely remove it. On the other hand, the cooling speed of the high-temperature moisture is not ideal. The heat exchange between the high-temperature moisture and the condensation medium requires a certain amount of time. In actual production, if the production line cycle is fast, the high-temperature moisture will be discharged before it can be fully cooled, which brings many inconveniences to subsequent processing and the environment.

[0005] Secondly, existing coating devices have stringent requirements on the working environment and require a dust-free environment to ensure an ideal coating effect. At the motor production and processing site, during operations such as cutting and punching, a large amount of dust and dirt will be suspended in the air. Existing devices use simple shielding covers or baffles to block dust and dirt. Although this method can reduce the entry of impurities into the coating or drying area to a certain extent, since the feed and discharge ports must remain open to facilitate rotor feeding, these two locations become the main channels for dust and dirt to invade. Even with shielding measures, in the actual production process, with the frequent in and out of materials, it is still difficult to effectively prevent dust and dirt from entering, which in turn has an adverse effect on the coating and drying quality. For example, dust attached to the surface of the freshly applied anti-rust paint will make the paint surface rough and uneven, reducing the protective performance of the coating. During the drying process, dust may be drawn into the hot air and fall on the rotor surface, which will also affect the coating quality.

[0006] Thirdly, there is a high possibility of static electricity on the surface of the motor rotor before coating. During the production and processing, the rotor frequently contacts and rubs with processing equipment and tools. For example, during turning and grinding, the friction between the rotor surface and the tool and grinding wheel causes charge transfer, which in turn carries static electricity. Secondly, if the rotor material itself has a high resistivity, it is difficult for the charge to flow inside. When disturbed by external factors, it is more likely to form static electricity on the surface. In addition, in a dry environment, there is less moisture in the air, and the charge is not easy to be conducted through the air, so static electricity is more likely to be generated and accumulated. The static electricity generated by these factors is usually not uniform, because the degree of friction between different parts of the rotor surface and other objects is different. For example, the end and the middle parts have different contact with the tool during processing, and the place with more friction accumulates more charge. In addition, the surface of the rotor material There are also differences in properties such as roughness and impurity content, which affect the charge distribution and accumulation, resulting in uneven distribution of static electricity on the rotor surface. This uneven static electricity has a significant impact on the later electrostatic coating. Due to the existence of static electricity, the movement trajectory and distribution state of the paint particles will change. Areas with more static electricity attract more paint particles, and areas with less static electricity attract fewer, resulting in uneven coating thickness, affecting the coating quality. It will also make the adhesion state of paint particles on the rotor surface inconsistent, and some areas will not adhere firmly. Problems such as coating peeling and peeling are prone to occur later, reducing the coating adhesion and protective performance. In addition, some fine dust and impurities are also very easy to attach to certain dust or impurities due to the complex static conditions in the early stage, which will undoubtedly have a great impact on the actual coating. Summary of the Invention

[0007] The object of the present invention is to provide a stepper motor processing and coating device, comprising a transport platform, a dust collector is provided on the outer wall of the transport platform, a dust hood is provided at the bottom of the inner cavity of the transport platform, the output end of the dust collector is connected to the outer wall of the dust hood, a screw conveying device is provided on the outer wall of the left end of the transport platform, a material storage barrel and a blower are provided on the rear outer wall of the transport platform, a material feeding pump is provided on the top of the storage barrel, the output end of the material feeding pump is connected to the material feeding pipe, and the output end of the blower is connected to the air inlet pipe, a mounting shell and a closing cover are provided on the top of the transport platform, an electrostatic powder spray gun is fixedly connected to the top of the mounting shell, the material feeding pipe is fixedly connected to the feeding end of the electrostatic powder spray gun, a wind screen assembly is fixedly installed on the inner wall of the mounting shell, the wind screen assembly includes a connecting shell 1 and an exhaust box, the connecting shell 1 is fixed to the inner wall of the mounting shell by screws, the front outer wall of the connecting shell 1 is fixedly connected to a mounting bracket, a high-voltage power supply 1, a high-voltage power supply 2 and a connecting shell 1 are provided on the top of the mounting bracket, a blowing cavity is opened inside the mounting bracket, and a drying chamber is provided on the top of the closing cover. The exhaust fan of the present invention is connected with the exhaust fan of the present invention to the up-down knob on the bottom of the exhaust fan, and the exhaust fan of the present invention is connected with the exhaust fan of the present invention to the up-down knob on the bottom of the exhaust fan.

[0008] Preferably, a paint collecting trough is provided on the top of the transport platform, and a sliding door is connected to the front outer wall of the transport platform by means of hinges.

[0009] Preferably, the connecting shell 1 is provided with an electrostatic discharge electrode electrically connected to the high-voltage power supply 1, the bottom of the blowing cavity is provided with an air outlet, the connecting shell 2 is provided with an electrostatic discharge elimination needle electrically connected to the high-voltage power supply 2, the blowing cavity is communicated with the connecting shell 2, the connecting shell 1 is communicated with the blowing hood, and the bottom of the blowing hood is provided with an air outlet of the same size.

[0010] Preferably, multiple heating covers are fixedly connected to the inner walls with heating wires, multiple heating covers are provided with hot air exhaust pipes at the bottom, multiple suction covers are provided with suction cylinders at the bottom, and multiple hot air exhaust pipes and suction cylinders extend to the interior of the closed cover.

[0011] Preferably, air outlets are provided on the outer walls on both sides of the installation box, the cooling ends of multiple cooling vortex tubes extend into the interior of the installation box, the tops of multiple cooling vortex tubes are connected to an air guide pipe 1, the hot ends of multiple cooling vortex tubes extend into the interior of the air guide pipe 1, and multiple cold air injection pipes are also provided on the front outer wall of the installation box, and the multiple cold air injection pipes extend into the interior of the water collecting tank.

[0012] Preferably, a groove body is provided on the top of the support box, and a second air guide pipe is provided on the outer wall of the support box. The second end of the air guide pipe extends to the outside of the condensing pipe inside the second condensing box and communicates with it.

[0013] Preferably, a fixed cylinder is fixedly installed on the top of the support box, and the ends of the multiple air outlet pipes are respectively connected to the rear outer wall of the fixed cylinder, a through-hole is provided on the circumferential inner wall of the fixed cylinder, and the through-hole corresponds to the trough body, and one end of the air guide pipe is fixedly connected to the rear outer wall of the fixed cylinder, and a shielding frame 1 and a shielding plate 2 are fixedly connected to the circumferential inner wall of the fixed cylinder, a through-hole matching the air guide pipe 1 is provided on the outer wall of the shielding frame 1, and a mounting circular plate is fixedly connected to the outer wall of the fixed cylinder.

[0014] Preferably, a driving motor and an activated carbon filter cartridge are provided on the outer wall of the mounting circular plate, the output end of the driving motor is connected to a rotating frame, a silica gel drying plate is clamped inside the rotating frame, and multiple ends of the activated carbon filter cartridges are connected to air pipes, and the ends of the multiple air pipes are respectively connected to the connecting shell 2, the connecting shell 1 and the outer wall of the top of the exhaust box and communicate with them.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: when the device is actually used, the rotors can be placed on the two conveying screws of the screw conveying device after the support rods are inserted at both ends of the rotor, and then the multiple rotors are conveyed to the bottom of the electrostatic powder spray gun for electrostatic coating. After the coating process is completed, the rotors continue to be conveyed to the inside of the closed cover with the help of the power of the screw conveying device. At this time, multiple blowers are started synchronously, and these blowers generate strong wind sources. The wind sources are respectively conveyed to the inside of multiple heating covers, and the heating wires arranged on the inner wall of the heating cover start to work, and the incoming wind source is quickly heated. The hot air is then blown into the closed cover to dry the coated rotor in all directions. During the drying process, multiple exhaust gas suction pumps are turned on synchronously, and they quickly suck out the moisture generated by drying inside the closed cover. The high-temperature moisture after suction passes through the pipeline and enters the condenser tubes in condenser box 1 and condenser box 2. In order to achieve efficient condensation, the external compressed gas is injected into multiple cooling vortex tubes. The cooling vortex tubes use a special vortex effect to generate a low-temperature cold source. These cold sources are used to preliminarily cool the condenser tubes in condenser box 1 and condenser box 2. Under the action of low temperature, part of the moisture in the condenser tubes is quickly condensed. The remaining cold air is converted into water droplets and drips into the water collecting tank, while the remaining cold air merges with the discharged dry gas inside the water collecting tank, and then enters the fixed cylinder through multiple air outlet pipes. In the fixed cylinder, the cold air and the dry exhaust gas pass through the silica gel drying plate together. The silica gel drying plate has a strong moisture absorption capacity and can absorb the moisture in the mixed gas. It is worth mentioning that the silica gel drying plate is driven by a driving motor to rotate. When a certain area of the silica gel drying plate absorbs moisture to a saturated state, the driving motor drives it to rotate between the shielding frame 1 and the shielding frame 2. At the same time, the cooling vortex tube generates a heat shield at the hot end. The hot air enters between the first and second shielding frames through the first air duct. The hot air dries the saturated silica gel drying plate area, turning the adsorbed moisture back into gaseous form. This moisture then flows back through the second air duct to the condenser tube inside the second condensation box, undergoing the condensation process again and turning into water droplets, further promoting the internal moisture to liquid. This innovative method of mixing condensed and cold source gas, combined with the dehumidification component, can significantly reduce the temperature and humidity of the drying exhaust gas. Moreover, the dried gas can be filtered through the activated carbon filter cartridge after dehumidification, thereby reducing the emission of harmful gases.

[0016] The gas filtered and purified by the activated carbon filter cartridge can be transported to the blowing chamber and exhaust box through multiple air pipes. The gas is discharged from the blowing ports at the bottom of the blowing chamber and exhaust box, forming a wind screen at the feed port and discharge port. The wind screen cooperates with the mounting shell and the closing cover to effectively block external dust and create a stable and clean environment for the coating and drying process of the motor rotor.

[0017] While the wind screen is being formed, the static electricity elimination discharge needle can be started. The static electricity elimination discharge needle generates an electric charge opposite to the static electricity on the rotor surface, and the gas blown out by the wind screen blows the rotor surface. Under the dual effects of charge neutralization and gas blowing, the static electricity on the rotor surface is neutralized and restored to an electrically neutral state. The blowing effect of the gas can also blow away some tiny dust, debris and other impurities on the rotor surface. These blown impurities are collected by the suction effect of the vacuum cleaner, which plays a good auxiliary cleaning role. The isolation and protection effect of the wind screen is combined with the auxiliary cleaning effect to further ensure the cleanliness of the rotor surface. After completing the static electricity elimination, the rotor continues to move forward with the screw conveying device and comes to the static electricity discharge point. At the very bottom, the static discharge electrode starts working, and cooperates with the gas transported by a gas pipe to re-cover the rotor surface with a layer of static electricity. By eliminating the original static electricity on the rotor surface first, the subsequent pre-static treatment effect can be made more stable and controllable, effectively reducing the uneven static electricity accumulation on the rotor surface, and ensuring that the rotor surface can carry a uniform charge. In this way, during the subsequent electrostatic coating, the paint particles with opposite charges can be more evenly and quickly adsorbed to the rotor surface, greatly improving the efficiency and uniformity of the coating, reducing the waste of paint, and making the coating smoother and smoother, significantly improving the quality and appearance of the coating, and also enhancing the adhesion of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the overall rear view structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the transport platform of the present invention;

[0021] Figure 4 This is a schematic diagram of the disassembly structure of the installation shell of the present invention;

[0022] Figure 5 This is a structural diagram of a connecting shell according to the present invention;

[0023] Figure 6 It is a schematic structural diagram of the heating cover of the present invention;

[0024] Figure 7 This is a schematic structural diagram of the condensation box of the present invention;

[0025] Figure 8 This is a schematic diagram of the installation box structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of the dehumidification component of the present invention;

[0027] Explanation of reference numerals in the figure: 100, transport platform; 110, dust collector; 120, dust hood; 130, screw conveyor; 140, storage barrel; 141, feed pump; 142, feed pipe; 150, blower; 151, air inlet pipe; 200, mounting shell; 210, electrostatic powder spray gun; 220, connecting shell 1; 221, electrostatic discharge electrode; 222, blowing hood; 230, mounting frame; 231, high-voltage power supply 1; 232, high-voltage power supply 2; 233, connecting shell 2; 234, electrostatic discharge needle; 235, blowing chamber; 300, closing cover; 310, heating cover; 311, heating wire; 312, suction cover; 313, Hot air exhaust pipe; 320, exhaust box; 400, installation box; 401, air outlet; 402, cooling vortex tube; 403, air duct one; 410, condensation box one; 411, metal dust screen; 412, exhaust gas suction pump; 413, condensation pipe; 414, water collecting tank; 415, water valve; 416, air outlet pipe; 420, support box; 421, air duct two; 422, fixing cylinder; 423, through-hole; 424, shielding frame one; 425, shielding plate two; 430, installation circular plate; 431, drive motor; 432, activated carbon filter cartridge; 433, air supply pipe; 434, rotating frame; 435, silica gel drying plate; 440, condensation box two. DETAILED DESCRIPTION

[0028] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] See also Figure 1-9 , the present invention provides a technical solution:

[0030] A stepper motor processing and coating device includes a transport platform 100, and a dust collector 110 is provided on the outer wall of the transport platform 100;

[0031] In some embodiments, the vacuum cleaner 110 may be a SUPOR vacuum cleaner, which is a prior art and is convenient for sucking impurities blown off the rotor surface.

[0032] A dust cover 120 is provided at the bottom of the inner cavity of the transport platform 100, the output end of the dust collector 110 is connected to the outer wall of the dust cover 120, and a screw conveying device 130 is provided on the outer wall of the left end of the transport platform 100;

[0033] In some embodiments: the screw conveying device 130 is composed of two screws with the same structure and arranged in parallel. There are thread grooves on the surface of the screws. The motor drives the two screws to rotate synchronously in the same direction through a toothed belt. The rotating shafts on both sides of the rotor are respectively placed in the thread grooves of the two screws. The rotation of the screw drives the rotor to move, and at the same time causes the rotor itself to rotate, so that the rotor can maintain a uniform speed and rotation state when passing through coating links such as high-frequency degreasing or epoxy powder electrostatic adsorption, thereby improving the coating effect.

[0034] A material storage barrel 140 and a blower 150 are provided on the rear outer wall of the transport platform 100. A material delivery pump 141 is provided on the top of the material storage barrel 140. The output end of the material delivery pump 141 is connected to a material delivery pipe 142. The output end of the blower 150 is connected to an air inlet pipe 151. A mounting shell 200 and a sealing cover 300 are provided on the top of the transport platform 100. An electrostatic powder spray gun 210 is fixedly connected to the top of the mounting shell 200.

[0035] In some embodiments: the electrostatic powder spray gun is mainly composed of a gun body, a nozzle, an electrode, a high-voltage generator, a powder supply system and a control system. The nozzle is located at the front end and determines the powder spray shape and atomization effect; the electrode is near the nozzle and obtains high voltage through the high-voltage generator to ionize the surrounding air; the high-voltage generator provides high voltage to the spray gun and is the core of realizing electrostatic adsorption; the powder supply system includes a storage barrel 140, a Venturi powder pump, etc., which uses compressed air to fluidize the powder coating and deliver it to the spray gun through a powder delivery pipe; the control system can adjust parameters such as powder flow, electrostatic voltage, and atomization pressure to meet different spraying requirements. Its working principle is that the high-voltage generator generates high voltage to ionize the air around the spray gun electrode. The powder coating is atomized into tiny particles when it is sprayed from the nozzle, and is negatively charged when it adsorbs ions when passing through the charged area. The sprayed workpiece is grounded, and the negatively charged powder particles are adsorbed to the rotor surface under the action of the electric field force. The above all belong to the existing technology.

[0036] The feeding pipe 142 is fixedly connected to the feeding end of the electrostatic powder spray gun 210. A wind screen assembly is fixedly installed on the inner wall of the mounting shell 200. The wind screen assembly includes a connecting shell 220 and an exhaust box 320. The connecting shell 220 is fixed to the inner wall of the mounting shell 200 with screws. The outer wall in front of the connecting shell 220 is fixedly connected to the mounting bracket 230. The top of the mounting bracket 230 is provided with a high-voltage power supply 1 231, a high-voltage power supply 2 232 and the connecting shell 220.

[0037] In some embodiments: the high-voltage power supply 1 231 and the high-voltage power supply 232 are both existing technologies, which are convenient for using the static electricity generating discharge electrode 221 and the static electricity eliminating discharge needle 234. When the surface of the motor rotor needs to be static-eliminated before a new layer of static electricity is reattached, the static electricity eliminating discharge needle 234 and the static electricity generating discharge electrode 221 can be used to achieve this. First, the static electricity eliminating discharge needle 234 is used to eliminate the static electricity on the surface of the electronic rotor. After it is connected to the high-voltage power supply 232, a strong electric field is formed at the needle tip, which ionizes the surrounding air to produce a large number of positive and negative ions. When static electricity exists on the surface of the electronic rotor, if it is positively charged, the negative ions generated by the discharge needle will If the electron rotor is negatively charged, the positive ions will neutralize it, thereby eliminating static electricity. After the static electricity is eliminated, the static electricity generating discharge electrode 221 is used to re-attach static electricity to the electron rotor. When a high voltage is applied to the static electricity generating discharge electrode 221, based on the tip discharge effect, the electric field strength at the sharp part of the sharp part increases sharply, ionizing the surrounding air to produce a large number of ions. When the electron rotor approaches the electrode, the ions adhere to its surface, thereby carrying static electricity. By adjusting the voltage and related parameters applied to the static electricity generating discharge electrode, the amount and polarity of the static electricity re-attached to the surface of the electron rotor can be controlled to meet specific needs. The above all belong to the existing technology.

[0038] A blowing chamber 235 is provided inside the mounting frame 230, a drying assembly is provided on the top of the closed cover 300, multiple drying assemblies include a heating cover 310, multiple heating covers 310 are fixed on the top of the closed cover 300, and suction covers 312 are provided on the outer walls on both sides of the heating cover 310. The exhaust box 320 is fixedly welded to the outer wall of the right end of the closed cover 300. The front outer wall of the transport platform 100 is also fixedly connected with a condensation assembly. The condensation assembly includes an installation box 400, and the installation box 400 is fixed to the outer wall of the front of the transport platform 100 with screws. Condensation box 1 410 and condensation box 2 440 are also welded and fixedly connected to the outer walls on both sides of the installation box 400. The outer wall of the condensation box 1 410 is fixedly connected to the outer wall of the transport platform 100. An exhaust gas suction pump 412 is provided on the wall, and the suction end of the exhaust gas suction pump 412 is connected to a suction pipe. The end of the suction pipe is connected to the outer wall of the suction hood 312 and extends to the inside. The discharge end of the exhaust gas suction pump 412 extends to the inside of the condensation box 410 and is connected to a condensation pipe 413. A water collecting box 414 is provided on the front outer wall of the condensation box 410, and a water valve 415 and an air outlet pipe 416 are provided on the front outer wall of the water collecting box 414. The condensation box 2 440 has the same structure as the condensation box 1 410. A cooling vortex tube 402 and a dehumidification component are provided on the top of the installation box 400. The dehumidification component includes a support box 420, and the support box 420 is fixedly connected to the top of the installation box 400.

[0039] In some embodiments: The cooling vortex tube is generally composed of a nozzle, a vortex chamber, a separation orifice plate, a cold air pipe and a hot air duct. Its working principle is based on the vortex effect and energy separation phenomenon. The compressed air enters the vortex chamber at a high speed tangential direction through the nozzle, forming a strong spiral airflow, i.e., a vortex. In the vortex tube, this vortex airflow rotates at high speed. Since the airflow speed near the axis is relatively slow, while the airflow speed near the tube wall is relatively fast, according to the law of conservation of energy, the high-speed rotating airflow will generate a radial pressure gradient in the tube, causing the outer layer of high-temperature and high-pressure airflow to move toward one end of the tube and be discharged through the hot air duct, while the inner layer of low-temperature and low-pressure airflow flows out from one end of the cold air pipe, thereby realizing the separation of hot and cold airflows and achieving the cooling effect. The cold air can facilitate the cooling and condensation of the gas discharged from the drying, and the hot air can be used to dry the silica gel drying plate 435.

[0040] Specifically, a paint collecting trough is provided on the top of the transport platform 100, and a sliding door is connected to the front outer wall of the transport platform 100 by hinges, so that the paint collecting trough can be used to collect excess paint.

[0041] Furthermore, an electrostatic discharge electrode 221 electrically connected to a high-voltage power supply 231 is provided inside the connecting shell 1 220, a blowing port is provided at the bottom of the blowing cavity 235, and an electrostatic discharge elimination needle 234 electrically connected to a high-voltage power supply 2 232 is provided inside the connecting shell 2 233. The blowing cavity 235 is communicated with the connecting shell 2 233, and the connecting shell 1 220 is communicated with the blowing hood 222. A blowing port of the same size is provided at the bottom of the blowing hood 222.

[0042] Furthermore, multiple heating covers 310 are fixedly connected to the inner walls with heating wires 311, multiple heating covers 310 are provided with hot air exhaust pipes 313 at the bottom, multiple suction covers 312 are provided with suction cylinders at the bottom, and multiple hot air exhaust pipes 313 and suction cylinders extend to the interior of the closed cover 300.

[0043] In some embodiments: multiple blowers 150 and heating wires 311 are used to generate hot air to blow on the rotor surface, which helps to evaporate the solvent in the coating and solidify the resin, so that the coating can better adhere to the surface of the workpiece, and improve the quality and performance of the coating. For example, in the drying of powder coatings commonly used in electrostatic spraying, the temperature is usually controlled at around 150℃-200℃, the wind speed is controlled within a certain range, and the operation is carried out according to the prescribed drying time. This can allow the powder coating to melt, level and solidify evenly, forming a good coating and avoiding shedding. The heating wire 311 and blower 150 are both existing technologies, and common models on the market can be selected.

[0044] Furthermore, air outlets 401 are provided on the outer walls on both sides of the installation box 400, the cooling ends of multiple cooling vortex tubes 402 extend into the interior of the installation box 400, the tops of multiple cooling vortex tubes 402 are connected to an air guide tube 403, the heating ends of multiple cooling vortex tubes 402 extend into the interior of the air guide tube 403, and the front outer wall of the installation box 400 is also provided with multiple cold air injection pipes 411, and the multiple cold air injection pipes 411 extend into the interior of the water collecting tank 414.

[0045] It is worth noting that a groove is provided on the top of the support box 420, and an air guide pipe 421 is provided on the outer wall of the support box 420. The end of the air guide pipe 421 extends to the outside of the condenser pipe 413 inside the condenser box 440 and is connected with it, so as to facilitate the transfer of moisture generated when the saturated area of the silica gel drying plate 435 is dried to the inside of the cooling vortex tube 402, thereby facilitating its re-condensation and cooling.

[0046] In some embodiments: the gas discharged from the exhaust box 320 can be used to air-cool the dried rotor. The air-cooling can further solidify and shape the coating on the surface of the rotor, and make the molecular structure inside the coating more stable through rapid heat dissipation, thereby improving the hardness, adhesion and corrosion resistance of the coating and enhancing the protective effect of the coating on the rotor. Furthermore, this cooling method helps to improve production efficiency, quickly make the rotor reach the temperature conditions for the next operation, shorten the production cycle, and improve the consistency and efficiency of the entire production process.

[0047] It is worth noting that a fixed cylinder 422 is fixedly installed on the top of the support box 420, and the ends of multiple air outlet pipes 416 are respectively connected to the outer wall at the rear of the fixed cylinder 422. A through hole 423 is provided on the inner wall of the circumference of the fixed cylinder 422, and the through hole 423 corresponds to the trough body. The end of the air guide tube 403 is fixedly connected to the outer wall at the rear of the fixed cylinder 422, and a shielding frame 1 424 and a shielding plate 2 425 are fixedly connected to the inner wall of the circumference of the fixed cylinder 422. A through circular hole matching the air guide tube 403 is provided on the outer wall of the shielding frame 1 424, and a mounting circular plate 430 is fixedly connected to the outer wall of the fixed cylinder 422.

[0048] In some embodiments, the silica gel drying plate 435 is disposed between the shielding frame 1 424 and the shielding plate 2 425 to provide a closed shield when drying the saturated area of the silica gel drying plate 435 . The silica gel drying plate 435 is in a circular shape and is fixedly connected to the inside of the rotating frame 434 .

[0049] In addition, a driving motor 431 and an activated carbon filter cartridge 432 are provided on the outer wall of the mounting circular plate 430. The output end of the driving motor 431 is connected to a rotating frame 434. A silica gel drying plate 435 is clamped inside the rotating frame 434. The ends of multiple activated carbon filter cartridges 432 are connected to gas pipes 433. The ends of multiple gas pipes 433 are respectively connected to the outer walls of the top of the connecting shell 233, the connecting shell 1 220 and the exhaust box 320 and are in communication with them.

[0050] In some embodiments, the driving motor 431 can be a servo motor commonly available on the market, which can be controlled by an external control console to rotate slowly so that it can evenly dry and desorb the saturated area of the silica gel drying plate 435.

[0051] In some embodiments, an activated carbon filter element is clamped inside the activated carbon filter cartridge 432 to facilitate filtering of the gas discharged from the drying process.

[0052] In some embodiments: the device can be powered by an external power supply, and the device can be controlled by an external console, all of which belong to the existing technology.

[0053] Working principle of the present invention: When the device is actually used, the rotor can be placed on the two conveying screws of the screw conveying device 130 after the support rods are inserted at both ends of the rotor, and then the multiple rotors are conveyed to the bottom of the electrostatic powder spray gun 210 for electrostatic coating. After completing the coating process, the rotor continues to be conveyed to the inside of the closed cover 300 with the help of the power of the screw conveying device 130. At this time, multiple blowers 150 are started synchronously. These blowers 150 generate a strong wind source, and the wind source is respectively conveyed to the inside of multiple heating covers 310. The electric heating wire 311 set on the inner wall of the heating cover 310 starts to work, and quickly heats the incoming wind source. The heated hot air is then blown into the inside of the closed cover 300 to dry the coated rotor in all directions. During the drying process, multiple exhaust gas suction pumps 412 are turned on synchronously, and they quickly suck the moisture generated by drying inside the closed cover 300. The high-temperature moisture after suction passes through the pipeline and enters the condenser 413 in the condenser box 1 410 and the condenser box 2 440. In order to achieve efficient condensation, the external compressed gas is injected into multiple cooling vortex tubes 402. The cooling vortex tubes 402 use a special vortex effect to generate a low-temperature cold source. These cold sources are used to perform preliminary cooling on the condenser tubes 413 in the condenser box 1 410 and the condenser box 2 440. Under the action of low temperature, part of the moisture in the condenser tube 413 is quickly converted into water droplets, which drip into the water collecting tank 414, and the remaining cold air merges with the discharged drying gas inside the water collecting tank 414. Then, they pass through multiple air outlet pipes 416 together and enter the interior of the fixed cylinder 422. In the fixed cylinder 422, the cold air and the dried exhaust gas pass through the silica gel drying plate 435 together. The silica gel drying plate 435 has a strong moisture absorption capacity and can absorb the moisture in the mixed gas. It is worth mentioning that the silica gel drying plate 435 is driven to rotate by the driving motor 431. When a certain area of the silica gel drying plate 435 absorbs moisture to a saturated state, the driving motor 431 drives it to rotate to between the shielding frame 1 424 and the shielding frame 2 425. At the same time, the hot air generated by the heating end of the cooling vortex tube 402 enters between the shielding frame 1 424 and the shielding frame 2 425 through the air guide pipe 1 403. The hot air adsorbs the saturated area of the silica gel drying plate 435. Hot air drying is performed to convert the adsorbed moisture back into gaseous form. The moisture flows back to the condenser pipe 413 inside the condenser box 440 through the second air guide pipe 421, undergoes the condensation process again, and is converted into water droplets, further promoting the internal moisture to be converted into liquid. Through this innovative method of mixing condensation with cold source gas, combined with the dehumidification component, the temperature and humidity of the dried exhaust gas can be significantly reduced, and the dried gas can be filtered through the activated carbon filter cartridge 432 after dehumidification, thereby reducing the emission of harmful gases. The gas filtered and purified by the activated carbon filter cartridge 432 can be transported to the blowing chamber 235 and the exhaust box 320 through multiple air pipes 433. These gases are discharged from the blowing ports at the bottom of the blowing chamber 235 and the exhaust box 320.A layer of wind screen is formed at the feed port and the discharge port. The wind screen cooperates with the mounting shell 200 and the sealing cover 300 to effectively shield and protect external dust and dirt, and create a stable and clean environment for the coating and drying process of the motor rotor. While the wind screen is formed, the static electricity elimination discharge needle 234 can be started. The static electricity elimination discharge needle 234 generates an electric charge opposite to the static electricity on the rotor surface, and cooperates with the gas blown out by the wind screen to blow the rotor surface. Under the dual effects of charge neutralization and gas blowing, the static electricity on the rotor surface is neutralized and restored to an electrically neutral state. The blowing effect of the gas can also blow away some tiny dust, debris and other impurities on the rotor surface. These blown impurities are collected by the suction effect of the vacuum cleaner 110, which plays a good auxiliary cleaning role. The isolation and protection function of the wind screen is combined with the auxiliary cleaning function to further ensure The cleanliness of the rotor surface. After the static electricity is eliminated, the rotor continues to move forward along with the screw conveying device 130 and reaches the bottom of the static electricity generating and discharging electrode 221. At this time, the static electricity generating and discharging electrode starts to work, and cooperates with the gas delivered by a gas pipe 433 to re-cover the rotor surface with a layer of static electricity. By first eliminating the original static electricity on the rotor surface, the subsequent pre-static treatment effect can be made more stable and controllable, effectively reducing the uneven static electricity accumulation on the rotor surface and ensuring that the rotor surface can be evenly charged. In this way, during the subsequent electrostatic coating, the paint particles with opposite charges can be more evenly and quickly adsorbed to the rotor surface, greatly improving the efficiency and uniformity of the coating, reducing the waste of paint, and making the coating more flat and smooth, significantly improving the quality and appearance of the coating, and also enhancing the adhesion of the coating.

[0054] The above content is a further detailed description of the present invention in conjunction with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A stepper motor processing and coating device, comprising a transport platform (100), characterized in that: The outer wall of the transport platform (100) is provided with a dust collector (110), the bottom of the inner cavity of the transport platform (100) is provided with a dust cover (120), the output end of the dust collector (110) is connected to the outer wall of the dust cover (120), the left end outer wall of the transport platform (100) is provided with a screw conveying device (130), the rear outer wall of the transport platform (100) is provided with a storage barrel (140) and a blower (150), the top of the storage barrel (140) is provided with a feeding pump (141), the output end of the feeding pump (141) is connected to a feeding pipe (142), the output end of the blower (150) is connected to an air inlet pipe (151), and the top of the transport platform (100) is provided with a mounting shell (200) and a sealing cover (30 0), an electrostatic powder spray gun (210) is fixedly connected to the top of the mounting shell (200), the feed pipe (142) is fixedly connected to the feed end of the electrostatic powder spray gun (210), a wind screen assembly is fixedly installed on the inner wall of the mounting shell (200), the wind screen assembly includes a connecting shell (220) and an exhaust box (320), the connecting shell (220) is fixed to the inner wall of the mounting shell (200) by screws, the front outer wall of the connecting shell (220) is fixedly connected to a mounting frame (230), a high-voltage power supply (231), a high-voltage power supply (232) and a connecting shell (220) are arranged on the top of the mounting frame (230), a blowing chamber (235) is opened inside the mounting frame (230), the closed A drying assembly is provided on the top of the cover (300), and multiple drying assemblies include heating covers (310). Multiple heating covers (310) are fixed on the top of the closed cover (300). Suction covers (312) are provided on the outer walls on both sides of the heating cover (310). The exhaust box (320) is fixedly welded to the outer wall of the right end of the closed cover (300). The front outer wall of the transport platform (100) is also fixedly connected with a condensation assembly. The condensation assembly includes an installation box (400). The installation box (400) is fixed to the outer wall of the front of the transport platform (100) with screws. Condensation box 1 (410) and condensation box 2 (440) are also welded and fixedly connected to the outer walls on both sides of the installation box (400). Condensation box 1 (410) An exhaust gas suction pump (412) is provided on the outer wall, and a suction end of the exhaust gas suction pump (412) is connected to a suction pipe, and the end of the suction pipe is connected to the outer wall of the suction hood (312) and extends to the inside. The exhaust gas suction pump (412) discharge end extends to the inside of the condensation box (410) and is connected to a condensation pipe (413). A water collecting box (414) is provided on the front outer wall of the condensation box (410), and a water valve (415) and an air outlet pipe (416) are provided on the front outer wall of the water collecting box (414). The condensation box (440) has the same structure as the condensation box (410). A cooling vortex tube (402) and a dehumidification component are provided on the top of the installation box (400). The dehumidification component includes a support box (420).The support box (420) is fixedly connected to the top of the installation box (400).

2. The stepper motor processing and coating device according to claim 1, characterized in that: A paint collecting trough is provided on the top of the transport platform (100), and a sliding door is connected to the front outer wall of the transport platform (100) by means of a hinge.

3. The stepper motor processing and coating device according to claim 1, characterized in that: The connection shell (220) is provided with a static electricity generating discharge electrode (221) electrically connected to the high-voltage power supply (231) inside, and a blowing port is provided at the bottom of the blowing chamber (235). The connection shell (233) is provided with a static electricity eliminating discharge needle (234) electrically connected to the high-voltage power supply (232) inside, the blowing chamber (235) is communicated with the connection shell (233), the connection shell (220) is communicated with the blowing cover (222), and the bottom of the blowing cover (222) is provided with a blowing port of the same size.

4. The stepper motor processing and coating device according to claim 1, characterized in that: The inner walls of the plurality of heating covers (310) are fixedly connected with electric heating wires (311), the bottoms of the plurality of heating covers (310) are provided with hot air exhaust pipes (313), the bottoms of the plurality of suction covers (312) are provided with suction cylinders, and the plurality of hot air exhaust pipes (313) and the suction cylinders extend into the interior of the closed cover (300).

5. The stepper motor processing and coating device according to claim 1, characterized in that: Air outlets (401) are provided on the outer walls on both sides of the installation box (400), the cooling ends of the plurality of cooling vortex tubes (402) extend into the interior of the installation box (400), the tops of the plurality of cooling vortex tubes (402) are connected to an air guide tube (403), the heating ends of the plurality of cooling vortex tubes (402) extend into the interior of the air guide tube (403), and the front outer wall of the installation box (400) is further provided with a plurality of cold air injection tubes (411), and the plurality of cold air injection tubes (411) extend into the interior of the water collecting box (414).

6. The stepper motor processing and coating device according to claim 1, characterized in that: A groove body is provided on the top of the support box (420), and a second air guide pipe (421) is provided on the outer wall of the support box (420). The end of the second air guide pipe (421) extends to the outside of the condensation pipe (413) inside the second condensation box (440) and communicates with it.

7. The stepper motor processing and coating device according to claim 1, characterized in that: A fixed cylinder (422) is fixedly installed on the top of the support box (420), and the ends of the plurality of air outlet pipes (416) are respectively connected to the rear outer wall of the fixed cylinder (422), and a through-hole (423) is provided on the circumferential inner wall of the fixed cylinder (422), and the through-hole (423) corresponds to the trough body. The end of the air guide pipe (403) is fixedly connected to the rear outer wall of the fixed cylinder (422), and a shielding frame (424) and a shielding plate (425) are fixedly connected to the circumferential inner wall of the fixed cylinder (422). The outer wall of the shielding frame (424) is provided with a through circular hole matching the air guide pipe (403), and the outer wall of the fixed cylinder (422) is fixedly connected to a mounting circular plate (430).

8. The stepper motor processing and coating device according to claim 7, characterized in that: The outer wall of the mounting circular plate (430) is provided with a driving motor (431) and an activated carbon filter cartridge (432); the output end of the driving motor (431) is connected to a rotating frame (434); a silica gel drying plate (435) is clamped inside the rotating frame (434); the ends of the plurality of activated carbon filter cartridges (432) are connected to air pipes (433); the ends of the plurality of air pipes (433) are respectively connected to the outer wall of the top of the connecting shell 2 (233), the connecting shell 1 (220) and the exhaust box (320) and communicate with them.

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