Nut inner thread electrostatic wax spraying device and electrostatic wax spraying method

Abstract

This invention belongs to the field of electrostatic spraying technology and discloses an electrostatic wax spraying device and method for internal thread nut spraying. The electrostatic wax spraying device for internal thread nut spraying includes a connecting plate, a frame, a wax spraying mechanism, a recovery mechanism, and a heating mechanism. The connecting plate has a positioning hole for accommodating the nut. The frame is equipped with a conveyor line. The wax spraying mechanism includes a first electrostatic generator and a wax spraying assembly. The first electrostatic generator is electrically connected to a conductive plate, and the wax spraying assembly outputs wax mist to the positioning hole. The recovery mechanism includes a negative pressure assembly and a second electrostatic generator. The negative pressure assembly includes a fan, a recovery box, and two wax suction components. The fan drives airflow from the wax suction components to the recovery box, and the second electrostatic generator charges the recovery box with static electricity. The heating mechanism includes a heating element and a blower pipe. The heating element heats the air, and the blower pipe drives the air to blow towards the positioning hole. This electrostatic wax spraying device for internal thread nut spraying of the present invention can improve wax spraying efficiency and quality, and improve processing reliability.

Description

Technical Field

[0001] This invention relates to the field of electrostatic spraying technology, and in particular to an electrostatic wax spraying device and method for internal threads of nuts. Background Technology

[0002] In related technologies, in order to improve the connection reliability of nuts and bolts, a plating layer is usually applied to the inner thread surface of the nut to enhance the connection performance of the nut. However, in practical applications, when the nut is tightened, friction is generated between the nut and the bolt, which requires the plating layer to withstand a large preload, which may lead to damage or peeling of the plating layer, affecting the connection reliability of the nut.

[0003] The existing method involves applying paraffin wax to the internal threads of the nut. The lubricating properties of paraffin wax reduce the friction between the nut and bolt during tightening, thus preventing the plating from being damaged and peeling off due to excessive friction. Currently, solid paraffin wax is applied manually to the nut's internal threads. However, this method is not only inefficient but also makes it difficult to ensure the uniformity of the paraffin wax distribution on the nut's internal threads, failing to achieve the desired lubrication effect. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes an electrostatic wax spraying device for internal threads of nuts, which can improve wax spraying efficiency and quality, and enhance processing reliability.

[0005] This invention also proposes an electrostatic waxing method for use in the aforementioned electrostatic waxing equipment for internal threads of nuts.

[0006] According to a first aspect of the present invention, an electrostatic wax spraying device for internal threads of nuts includes a connecting plate, a frame, a wax spraying mechanism, a recycling mechanism, and a heating mechanism. The connecting plate has a positioning hole for accommodating a nut. A first cover plate and a second cover plate are detachably connected to both sides of the connecting plate to confine the nut in the positioning hole. Both the first cover plate and the second cover plate have through holes communicating with the positioning hole. The connecting plate is made of metal. The frame is provided with a conveyor line for supporting and conveying the connecting plate. The wax spraying mechanism includes a first electrostatic generator and a wax spraying assembly. The first electrostatic generator is electrically connected to a conductive plate, and the conductive plate is fixedly connected to... On the frame, the connecting plate abuts against the conductive sheet. The wax spraying assembly is arranged below the conveyor line to output wax mist to the positioning hole. The recycling mechanism includes a negative pressure assembly and a second electrostatic generator. The negative pressure assembly includes a fan, a recycling box, and two wax suction components. The recycling box is connected to the wax suction components. The two wax suction components are respectively arranged on both sides of the connecting plate. The fan is used to drive airflow from the wax suction components to the recycling box. The second electrostatic generator is used to charge the recycling box with static electricity. The heating mechanism includes a heating element and a blower pipe. The heating element is used to heat the air, and the blower pipe is used to drive the air to blow towards the positioning hole.

[0007] The electrostatic wax spraying device for the internal thread of a nut according to an embodiment of the present invention has at least the following advantages: the nut is arranged in a positioning hole, and a first cover plate and a second cover plate are respectively connected to both sides of a connecting plate, so that the nut can be confined in the positioning hole. The connecting plate is arranged on a conveyor line so that the conveyor line can drive the connecting plate to pass sequentially through the wax spraying mechanism, the recycling mechanism, and the heating mechanism. The first electrostatic generator is electrically connected to the conductive plate. When the conveyor line drives the connecting plate to abut against the conductive plate, it can cause the connecting plate and the nut to become electrostatically charged. Then, the wax spraying assembly outputs wax mist to the positioning hole, and the electrostatic charge in the nut can attract the wax mist to adhere to the internal thread. Subsequently, the conveyor line drives the connecting plate to move between the two wax suction components. The fan drives the airflow from the wax suction components to the recovery box, and the second electrostatic generator can cause the recovery box to become electrostatically charged, so that the wax mist that is not attached to the connecting plate and the nut can flow from the wax suction components to the recovery box. This not only ensures that the wax mist is accurately distributed in the internal thread of the nut, but also enhances the wax mist recovery intensity, reduces material waste, and improves the reliability of use. Finally, the conveyor line drives the connecting plate to move below the air blowing pipe. The heating element heats the air, and the hot air is blown into the positioning hole through the air blowing pipe to heat the wax on the internal thread of the nut, so that the wax can be evenly distributed in the internal thread of the nut. This replaces the manual application operation, improves the wax spraying efficiency and quality, and improves the reliability of processing.

[0008] According to some embodiments of the present invention, the wax spraying assembly includes a wax melting tank, an atomizer, and a nozzle. The wax melting tank is used to contain and heat the wax liquid. The atomizer is connected to a wax extraction tube, which communicates with the wax melting tank. The atomizer has an air inlet and an atomization port, both of which are connected to the air inlet and the wax extraction tube. The output end of the atomization port is connected to the nozzle. The positioning hole can mate with the nozzle.

[0009] According to some embodiments of the present invention, the wax extraction tube is fixedly connected to a dispersion ring, and the side of the dispersion ring near the atomizing port is configured as an arc surface, the arc surface being arranged around the wax extraction tube.

[0010] According to some embodiments of the present invention, the frame is further provided with a positioning component, the positioning component including a first driving member and a first baffle, the first driving member being used to drive the first baffle to move up and down, so that the connecting plate can abut against the first baffle, and the wax spraying component can align with the positioning hole.

[0011] According to some embodiments of the present invention, the positioning component further includes a second driving member and a second baffle, the second driving member being used to drive the second baffle to move up and down, so that the connecting plate can abut against the second baffle, and the blower pipe can align with the positioning hole.

[0012] According to some embodiments of the present invention, the positioning component further includes a controller, a first sensor and a second sensor, the first sensor corresponding to the wax spraying mechanism, the second sensor corresponding to the heating mechanism, both the first sensor and the second sensor being used to sense the connecting plate, and both the first sensor and the first driving member, as well as the second sensor and the second driving member, being electrically connected to the controller.

[0013] According to some embodiments of the present invention, the recycling bin is provided with two filter screens, which are respectively arranged at the air inlet and air outlet of the recycling bin, and the wax mist can adhere to the filter screens.

[0014] According to some embodiments of the present invention, the wax spraying mechanism further includes a wax spraying box, the wax spraying box including an upper box and a lower box, the lower box being fixedly connected to the frame, the upper box and the lower box being hinged, the upper box and the lower box forming a cavity, and the conveyor line passing through the cavity.

[0015] According to some embodiments of the present invention, guide plates are provided on both sides of the frame, and both sides of the connecting plate can abut against the guide plates.

[0016] According to a second aspect of the present invention, an electrostatic wax spraying method for internal threads of a nut is applied to an electrostatic wax spraying device for internal threads of a nut according to a first aspect of the present invention, the electrostatic wax spraying method for internal threads of a nut includes: The nut is arranged in the positioning hole, and the first cover plate and the second cover plate are connected to both sides of the connecting plate, so that the nut is confined in the positioning hole; The connecting plate is arranged on the conveyor line to drive the connecting plate to move above the wax spraying assembly, so that the connecting plate abuts against the conductive sheet, so that the connecting plate is charged with static electricity, and the wax mist is sprayed out of the positioning hole through the wax spraying assembly so that the wax mist adheres to the internal thread of the nut. The conveyor line drives the connecting plate to move between the two wax suction components, the second electrostatic generator causes the recycling box to become electrostatically charged, and the fan drives the airflow from the wax suction components to the recycling box, so that the wax mist can be recycled into the recycling box. The conveyor line drives the connecting plate to move below the air blower, heats the air through the heating element, and blows it through the air blower toward the positioning hole to heat the wax in the nut.

[0017] The electrostatic wax spraying method for the internal threads of nuts according to embodiments of the present invention has at least the following beneficial effects: The electrostatic wax spraying equipment for the internal threads of nuts according to the first aspect of the present invention can guide wax mist to adhere to the internal threads of the nut via electrostatic guidance, and the heating mechanism can remelt and solidify the wax material on the internal threads of the nut, allowing the wax material to be evenly distributed in the internal threads of the nut, thus improving the wax spraying quality. Furthermore, the second electrostatic generator can charge the recovery box with static electricity, facilitating the negative pressure component to recover and reuse the floating wax mist, reducing wax waste and improving processing efficiency.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of an electrostatic wax spraying device for the internal thread of a nut according to a first aspect of the present invention; Figure 2 This is a schematic diagram of the connecting plate of the electrostatic wax spraying device for the internal thread of a nut according to a first aspect of the present invention; Figure 3 This is a schematic diagram of the concealed upper housing of the electrostatic wax spraying device for the internal thread of a nut according to a first aspect embodiment of the present invention; Figure 4 for Figure 3 A magnified view of part A; Figure 5 This is a schematic diagram of the wax spraying assembly of an electrostatic wax spraying device for internal threads of nuts according to a first aspect of the present invention. Figure 6 This is a schematic diagram of the atomizer of the electrostatic wax spraying device for the internal thread of a nut according to the first aspect of the present invention; Figure 7 This is a cross-sectional view of an electrostatic wax spraying device for the internal thread of a nut according to a first aspect of the present invention. Figure 8 This is a schematic diagram of the wax-absorbing component of the electrostatic wax spraying device for the internal thread of a nut according to a first aspect of the present invention; Figure 9 This is a schematic diagram of the heating mechanism of the electrostatic wax spraying device for the internal thread of a nut according to a first aspect of the present invention; Figure 10 This is a flowchart of an electrostatic wax spraying method for the internal thread of a nut according to a second aspect of the present invention.

[0020] Figure label: Connecting plate 100, positioning hole 110, first cover plate 120, second cover plate 130, through hole 141; Frame 200, conveyor line 210, positioning component 220, first drive component 221, first baffle 222, second drive component 223, second baffle 224, first sensor 225, second sensor 226, guide plate 230; Wax spraying mechanism 300, first electrostatic generator 310, conductive sheet 311, wax spraying assembly 320, wax melting box 321, atomizer 322, nozzle 323, wax extraction pipe 324, air inlet 325, atomization port 326, dispersion ring 327, partition net 328, wax spraying box 330, upper box 331, lower box 332, cavity 333; The components include: a recycling mechanism 400, a negative pressure assembly 410, a fan 411, a recycling bin 412, a wax suction component 413, a filter screen 414, and a second electrostatic generator 420. Heating mechanism 500, heating element 510, air blower 520. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] Understandably, referring to Figures 1 to 5 ,as well as Figures 7 to 9The electrostatic wax spraying device for the internal thread of a nut according to a first aspect of the present invention includes a connecting plate 100, a frame 200, a wax spraying mechanism 300, a recovery mechanism 400, and a heating mechanism 500. The connecting plate 100 has a positioning hole 110 for accommodating the nut. A first cover plate 120 and a second cover plate 130 are detachably connected to both sides of the connecting plate 100 to limit the nut in the positioning hole 110. Both the first cover plate 120 and the second cover plate 130 have through holes 141 communicating with the positioning hole 110. The connecting plate 100 is made of metal. The frame 200 is provided with a conveyor line 210 for supporting and conveying the connecting plate 100. The wax spraying mechanism 300 includes a first electrostatic generator 310 and a wax spraying assembly 320. The first electrostatic generator 310 is electrically connected to a conductive sheet 311. Fixedly connected to the frame 200, the connecting plate 100 can abut against the conductive sheet 311. The wax spraying assembly 320 is arranged below the conveyor line 210 to output wax mist to the positioning hole 110. The recycling mechanism 400 includes a negative pressure assembly 410 and a second electrostatic generator 420. The negative pressure assembly 410 includes a fan 411, a recycling box 412 and two wax suction components 413. The recycling box 412 is connected to the wax suction components 413. The two wax suction components 413 are respectively arranged on both sides of the connecting plate 100. The fan 411 is used to drive the airflow from the wax suction components 413 to the recycling box 412. The second electrostatic generator 420 is used to make the recycling box 412 statically charged. The heating mechanism 500 includes a heating element 510 and a blowing pipe 520. The heating element 510 is used to heat the air, and the blowing pipe 520 is used to drive the air to blow towards the positioning hole 110.

[0026] The nut is positioned in the positioning hole 110, and the first cover plate 120 and the second cover plate 130 are respectively connected to both sides of the connecting plate 100, so that the nut can be confined in the positioning hole 110. The connecting plate 100 is positioned on the conveyor line 210 so that the conveyor line 210 can drive the connecting plate 100 to pass sequentially through the wax spraying mechanism 300, the recycling mechanism 400, and the heating mechanism 500.

[0027] The conductive sheet 311 is fixedly connected to the frame 200. The first electrostatic generator 310 is electrically connected to the conductive sheet 311. When the conveyor line 210 drives the connecting plate 100 to convey, the connecting plate 100 can abut against the conductive sheet 311. Since the connecting plate 100 is a metal part, it can cause the connecting plate 100 and the nut to become electrostatically charged. Wax mist is output to the positioning hole 110 through the wax spraying assembly 320. Moreover, there is a potential difference between the nut and the wax mist, which allows the electrostatic charge in the nut to attract the wax mist to adhere to the internal thread, so that the wax mist can solidify and stick to the internal thread of the nut.

[0028] Subsequently, the conveyor line 210 drives the connecting plate 100 to move between the two wax suction components 413. The fan 411 drives the airflow from the wax suction components 413 to the recycling box 412. The second electrostatic generator 420 can charge the recycling box 412 with static electricity, so that the wax mist that is not attached to the connecting plate 100 and the nut, as well as the floating wax mist around the wax suction components 413, can flow from the wax suction components 413 to the recycling box 412. This not only ensures that the wax mist is accurately arranged in the inner thread of the nut, avoiding the vibration and falling of the poorly adhered wax mist onto the conveyor line 210, thus improving the reliability of use, but also enhances the wax mist recovery intensity by using the electrostatic recycling box 412, reducing material waste and facilitating recycling.

[0029] Finally, the conveyor line 210 drives the connecting plate 100 to move below the air blower 520, heats the air through the heating element 510, and blows the hot air through the air blower 520 to the positioning hole 110 to heat the wax on the inner thread of the nut, so that the wax can be evenly distributed in the inner thread of the nut, replacing the manual application operation, improving the waxing efficiency and quality, and improving the reliability of processing.

[0030] It should be noted that when the wax spraying component 320 outputs wax mist to the nut, the wax mist can solidify and adhere to the internal threads of the nut. However, there are certain gaps between the wax mist particles, and the solidified shape is pitted, which does not meet the processing effect. By setting the air blower 520 to blow hot air onto the nut, the hot air can remelt the wax solidified in the internal threads of the nut. This allows the wax to solidify again, eliminating the pits in the wax, and ensuring that the wax is evenly distributed and fills the internal threads of the nut, thus improving the quality of the wax spraying.

[0031] The first cover plate 120 and the second cover plate 130 are both provided with through holes 141, which are connected to positioning holes 110. This allows wax mist or airflow to pass smoothly through the positioning holes 110 when they are connected to the wax spraying assembly 320 or the blower pipe 520, which helps to reduce turbulence and improve the stability of wax spraying.

[0032] Specifically, the connecting plate 100 can be made of conductive metal such as iron or copper, so that the conductive sheet 311 can transfer charge to the nut through the connecting plate 100, thereby improving reliability.

[0033] Specifically, both the first cover plate 120 and the second cover plate 130 are provided with bolts, and the bolts are threadedly connected to the connecting plate 100 so that the first cover plate 120 and the second cover plate 130 can be detachably connected to the connecting plate 100. This not only makes it easy to lock the nut in the positioning hole 110, but also makes it easy to remove the nut from the positioning hole 110, which helps to improve the convenience of nut installation and removal.

[0034] Specifically, the blower pipe 520 is connected to an air pump, which drives airflow from the heating element 510 to the blower pipe 520 so that hot air can pass through the positioning hole 110.

[0035] Understandably, referring to Figure 3 , Figure 5 and Figure 6 The wax spraying assembly 320 includes a wax melting tank 321, an atomizer 322, and a nozzle 323. The wax melting tank 321 is used to hold and heat the wax liquid. The atomizer 322 is connected to a wax extraction tube 324, which is connected to the wax melting tank 321. The atomizer 322 has an air inlet 325 and an atomization port 326, both of which are connected to the air inlet 325 and the wax extraction tube 324. The output end of the atomization port 326 is connected to the nozzle 323. The positioning hole 110 can be docked with the nozzle 323. The wax liquid is contained and heated in the wax melting box 321, keeping it in a liquid flow state. The atomizer 322 is connected to the wax extraction tube 324, which is inserted into the wax melting box 321, immersing the input end of the tube in the wax liquid. The atomizing port 326 is connected to both the air inlet 325 and the wax extraction tube 324. When airflow enters from the air inlet 325, it can exit from the atomizing port 326, creating a negative pressure at the output end of the wax extraction tube 324. This allows the wax liquid in the wax melting box 321 to flow towards the atomizing port 326, ensuring that the air and wax liquid are fully mixed and atomized within the atomizer 322, forming a uniform and fine wax mist.

[0036] The output end of nozzle 323 is connected to atomizing port 326, and positioning hole 110 can dock with nozzle 323, so that the atomized wax mist can be accurately sprayed onto the internal thread of nut, improving the accuracy of wax spraying, allowing wax mist to smoothly enter the thread groove of nut internal thread, avoiding wax mist volume being too large and solidifying to block thread groove, reducing the possibility of wax material forming voids on nut internal thread, making it easier to adhere more evenly to nut internal thread, and improving wax spraying quality.

[0037] It should be noted that the air inlet 325 is connected to the air pump. The air pump can input compressed air into the air inlet 325, so that the compressed air can attract the wax liquid and atomize it for output.

[0038] Specifically, a heating element is installed inside the wax melting box 321, which heats the molten wax, keeping it in a liquid state so that the wax can be extracted by the wax extraction tube 324.

[0039] Specifically, the input end of the wax extraction tube 324 is connected to a screen 328. The screen 328 can filter the wax entering the wax extraction tube 324, preventing unmelted wax, debris and other impurities from entering the wax extraction tube 324, avoiding clogging of the atomizer 322 and improving the reliability of the wax spraying mechanism 300.

[0040] Specifically, refer to Figure 5 and Figure 6 A dispersion ring 327 is fixedly connected to the wax extraction tube 324. The side of the dispersion ring 327 near the atomizing port 326 is set as an arc surface, which surrounds the wax extraction tube 324. By setting the dispersion ring 327 as an arc surface surrounding the wax extraction tube 324 on the side near the atomizing port 326, the arc surface structure can effectively disperse the wax mist during the wax mist spraying process from the atomizing port 326. This allows the concentrated wax mist to diffuse evenly in all directions along the arc surface, reducing the possibility of wax mist falling into the melting wax box 321, effectively increasing the spray range and dispersion degree of the wax mist, facilitating the guidance of the wax mist from the nozzle 323, and improving reliability.

[0041] Understandably, referring to Figure 3 , Figure 5 and Figure 7 The frame 200 is also equipped with a positioning component 220, which includes a first driving member 221 and a first baffle 222. The first driving member 221 drives the first baffle 222 to move up and down, so that the connecting plate 100 can abut against the first baffle 222, and the wax spraying component 320 can align with the positioning hole 110. By driving the first baffle 222 to move up and down through the first driving member 221, the position of the first baffle 222 can be flexibly adjusted. When the first driving member 221 drives the first baffle 222 to rise, the conveyor line 210 can drive the connecting plate 100 to abut against the first baffle 222 to position the connecting plate 100 on the conveyor line 210, so that the wax spraying assembly 320 can be aligned with the positioning hole 110, so that the wax mist can be accurately delivered to the internal thread of the nut; when the first driving member 221 drives the first baffle 222 to fall, the first baffle 222 separates from the connecting plate 100, so that the conveyor line 210 can drive the connecting plate 100 to continue moving, realizing automatic wax spraying of the nut and improving processing efficiency.

[0042] It should be noted that the first driving component 221 can be a linear cylinder, an electric actuator, a linear slide module, etc., which will not be described in detail here.

[0043] Specifically, refer to Figure 3 and Figure 9The positioning component 220 also includes a second driving member 223 and a second baffle 224. The second driving member 223 drives the second baffle 224 to move up and down, so that the connecting plate 100 can abut against the second baffle 224, and the air pipe 520 can align with the positioning hole 110. By driving the second baffle 224 to move up and down, the position of the connecting plate 100 on the conveyor line 210 can be accurately positioned. When the second driving member 223 drives the second baffle 224 to descend, the conveyor line 210 can drive the connecting plate 100 to abut against the second baffle 224 to position the connecting plate 100 on the conveyor line 210, so that the air pipe 520 can be aligned with the positioning hole 110, facilitating the delivery of hot air to the internal thread of the nut; when the second driving member 223 drives the second baffle 224 to descend, the second baffle 224 separates from the connecting plate 100, so that the conveyor line 210 can drive the connecting plate 100 to continue moving, realizing automatic melting of the wax and improving processing efficiency.

[0044] It should be noted that the second drive component 223 can be a linear cylinder, an electric actuator, a linear slide module, etc., which will not be described in detail here.

[0045] Specifically, refer to Figure 3 , Figure 7 and Figure 9 The positioning component 220 also includes a controller (not shown in the figure), a first sensor 225 and a second sensor 226. The first sensor 225 corresponds to the wax spraying mechanism 300, and the second sensor 226 corresponds to the heating mechanism 500. The first sensor 225 and the second sensor 226 are both used to sense the connecting plate 100. The first sensor 225 and the first drive 221, as well as the second sensor 226 and the second drive 223 are all electrically connected to the controller. The first sensor 225 and the second sensor 226 are both fixed on the frame 200. The first sensor 225 corresponds to the wax spraying mechanism 300, and the second sensor 226 corresponds to the heating mechanism 500. When the connecting plate 100 reaches the sensing area of ​​the first sensor 225, the controller can accurately control the first drive component 221 to start, so that the first baffle 222 can position the connecting plate 100 above the wax spraying mechanism 300, so that the wax mist can be accurately sprayed into the inner thread of the nut. After the wax spraying is completed, the first drive component 221 drives the first baffle 222 to reset, and the connecting plate 100 moves to the sensing area of ​​the second sensor 226. The controller controls the second drive component 223 to start, so that the second baffle 224 positions the connecting plate 100 below the heating mechanism 500, so that the hot air can remelt and solidify the wax.

[0046] The first sensor 225 and the second sensor 226 enable the controller to automatically control the first drive unit 221 and the second drive unit 223 to start or stop. This not only improves processing efficiency, but also allows the controller to sense the dwell time of the connecting plate 100, thereby accurately controlling the wax spraying time and the wax heating time, which helps to improve the wax spraying quality.

[0047] It should be noted that the controller can be a microcontroller, a programmable logic controller, an industrial computer, etc.; the first sensing element 225 and the second sensing element 226 can both be proximity switches, infrared sensors, ultrasonic sensors, etc., which will not be described in detail here.

[0048] Understandably, referring to Figure 7 The recycling bin 412 is equipped with two filters 414, located at the air inlet and outlet ends of the bin, respectively. Wax mist adheres to these filters. When airflow carrying wax mist enters the recycling bin 412, the inlet filter 414 initially intercepts the wax mist, ensuring most of it adheres to its surface and drips into the bin. The outlet filter 414 further intercepts any remaining wax mist, purifying the exhaust gas and reducing its concentration, thus minimizing pollution and waste. Simultaneously, the two filters work together to slow the flow of wax mist, extending its residence time within the bin, improving recycling efficiency, facilitating reuse, reducing production costs, and increasing resource utilization.

[0049] Understandably, referring to Figure 1 and Figure 7 The wax spraying mechanism 300 also includes a wax spraying box 330, which comprises an upper box 331 and a lower box 332. The lower box 332 is fixedly connected to the frame 200. The upper box 331 and the lower box 332 are hinged together, forming a cavity 333, in which the conveyor line 210 passes. The lower box 332 is fixed to the frame 200, and the upper box 331 and the lower box 332 form a cavity 333. The cavity 333 provides a relatively enclosed space for the wax spraying process, effectively preventing wax mist from drifting during the spraying process, reducing the pollution of the surrounding environment and equipment by wax mist, lowering cleaning costs, and also preventing the operator from inhaling the wax mist, thus protecting the operator's health.

[0050] In addition, the hinged connection between the upper housing 331 and the lower housing 332 facilitates opening and closing. When it is necessary to perform operations such as debugging, inspection or cleaning of the wax spraying mechanism 300, simply open the upper housing 331. The operation is convenient and quick, which improves the ease of equipment maintenance and enhances the overall production efficiency.

[0051] Understandably, referring to Figure 3 Guide plates 230 are provided on both sides of the frame 200, and both sides of the connecting plate 100 can abut against the guide plates 230. The two guide plates 230 are respectively arranged on both sides of the frame 200, and the connecting plate 100 is located between the two guide plates 230. By setting the connecting plate 100 to abut against the guide plates 230, the connecting plate 100 can move accurately along the predetermined straight trajectory, avoiding the connecting plate 100 from deviating, shaking or tilting. This ensures that the components installed on the connecting plate 100 accurately reach the wax spraying mechanism 300, the recycling mechanism 400 or the heating mechanism 500, thereby improving the processing accuracy of the equipment and the stability of product quality.

[0052] Understandably, referring to Figure 10 The electrostatic wax spraying method for the internal thread of a nut according to a second aspect of the present invention includes the electrostatic wax spraying equipment for the internal thread of a nut according to a first aspect of the present invention. The electrostatic wax spraying method for the internal thread of a nut includes: S100 places the nut in the positioning hole 110 and connects the first cover plate 120 and the second cover plate 130 to both sides of the connecting plate 100, so that the nut is confined in the positioning hole 110. S200 arranges the connecting plate 100 on the conveyor line 210 to drive the connecting plate 100 to move above the wax spraying assembly 320, so that the connecting plate 100 abuts against the conductive sheet 311, so that the connecting plate 100 is charged with static electricity, and wax mist is sprayed into the positioning hole 110 through the wax spraying assembly 320, so that the wax mist adheres to the internal thread of the nut. S300 conveyor line 210 drives the connecting plate 100 to move between the two wax suction parts 413. The second electrostatic generator 420 causes the recycling box 412 to be charged with static electricity, and the fan 411 can drive the airflow from the wax suction parts 413 to the recycling box 412, so that the wax mist can be recycled into the recycling box 412. The S400 conveyor line 210 drives the connecting plate 100 to move below the air blowing pipe 520, heats the air through the heating element 510, and blows it through the air blowing pipe 520 towards the positioning hole 110 to heat the wax in the nut.

[0053] The nut is placed in the positioning hole 110, and the first cover plate 120 and the second cover plate 130 are connected to both sides of the connecting plate 100 so that the nut can be stably placed in the positioning hole 110; then the connecting plate 100 is placed on the conveyor line 210 so that the conveyor line 210 can drive the connecting plate 100 to pass through the wax spraying mechanism 300, the recycling mechanism 400 and the heating mechanism 500 in sequence.

[0054] When the connecting plate 100 moves above the wax spraying assembly 320, the first electrostatic generator 310 generates static electricity, which is transferred to the connecting plate 100 through the conductive sheet 311, making the connecting plate 100 statically charged. The wax spraying assembly 320 sprays wax mist into the positioning hole 110, so that the static electricity can attract the wax mist to adhere to the internal thread of the nut, enhancing the adhesion stability of the wax mist and making it easier for the wax mist to penetrate into the thread groove of the nut's internal thread, reducing the possibility of the wax material blistering in the nut's internal thread. Subsequently, the conveyor line 210 drives the connecting plate 100 to move between the two wax suction components 413. The second electrostatic generator 420 generates static electricity and transfers it to the recycling box 412, so that the recycling box 412 is charged with static electricity. The fan 411 can drive the airflow from the wax suction components 413 to the recycling box 412, so that the wax mist that is not attached to the nut and the wax mist that is scattered on the connecting plate 100 can be recycled into the recycling box 412. This not only enhances the wax mist recycling intensity and reduces the waste of wax, but also pre-cools and solidifies the wax, making it easier for the wax to be stable in the internal thread of the nut. When the connecting plate 100 moves to the bottom of the blower pipe 520, the air is heated by the heating element 510 and blown into the positioning hole 110 through the blower pipe 520. The hot air can heat the wax in the nut so that the wax can be remelted, thereby making the wax evenly distributed in the inner thread of the nut. This replaces the manual application operation and improves the waxing efficiency and quality.

[0055] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A nut internal thread electrostatic wax spraying apparatus, characterized by, include: A connecting plate is provided with a positioning hole for accommodating a nut. A first cover plate and a second cover plate are detachably connected to both sides of the connecting plate to confine the nut in the positioning hole. Both the first cover plate and the second cover plate are provided with through holes communicating with the positioning hole. The connecting plate is made of metal. The frame is equipped with a conveyor line, which is used to support and transport the connecting plate; The wax spraying mechanism includes a first electrostatic generator and a wax spraying assembly. The first electrostatic generator is electrically connected to a conductive sheet, which is fixedly connected to the frame. The connecting plate can abut against the conductive sheet. The wax spraying assembly is arranged below the conveyor line to output wax mist to the positioning hole. The recycling mechanism includes a negative pressure component and a second electrostatic generator. The negative pressure component includes a fan, a recycling box, and two wax suction components. The recycling box is connected to the wax suction components. The two wax suction components are respectively arranged on both sides of the connecting plate. The fan is used to drive airflow from the wax suction components to the recycling box. The second electrostatic generator is used to make the recycling box charge with static electricity. A heating mechanism includes a heating element and a blower pipe, wherein the heating element is used to heat air and the blower pipe is used to drive the air to blow toward the positioning hole.

2. The nut internal thread electrostatic wax spraying apparatus according to claim 1, characterized by, The wax spraying assembly includes a wax melting tank, an atomizer, and a nozzle. The wax melting tank is used to hold and heat the wax liquid. The atomizer is connected to a wax extraction tube, which is connected to the wax melting tank. The atomizer has an air inlet and an atomization port, both of which are connected to the air inlet and the wax extraction tube. The output end of the atomization port is connected to the nozzle. The positioning hole can mate with the nozzle.

3. The nut internal thread electrostatic wax spraying apparatus according to claim 2, characterized by, The wax extraction tube is fixedly connected to a dispersion ring, and the side of the dispersion ring near the atomizing port is set as an arc surface, which is arranged around the wax extraction tube.

4. The nut-threading electrostatic wax spraying apparatus according to claim 1, wherein The frame is also provided with a positioning component, which includes a first driving member and a first baffle. The first driving member is used to drive the first baffle to move up and down so that the connecting plate can abut against the first baffle and the wax spraying component can align with the positioning hole.

5. The nut-threading electrostatic wax spraying apparatus according to claim 4, wherein The positioning component further includes a second driving member and a second baffle. The second driving member is used to drive the second baffle to move up and down so that the connecting plate can abut against the second baffle and the blower pipe can align with the positioning hole.

6. The nut internal thread electrostatic wax spraying apparatus according to claim 5, wherein The positioning component further includes a controller, a first sensor, and a second sensor. The first sensor corresponds to the wax spraying mechanism, and the second sensor corresponds to the heating mechanism. Both the first sensor and the second sensor are used to sense the connecting plate. The first sensor and the first driving component, as well as the second sensor and the second driving component, are all electrically connected to the controller.

7. The electrostatic wax spraying equipment for the internal thread of a nut according to claim 1, characterized in that, The recycling bin is equipped with two filters, which are respectively arranged at the air inlet and air outlet of the recycling bin, and the wax mist can adhere to the filters.

8. The electrostatic wax spraying equipment for the internal thread of a nut according to claim 1, characterized in that, The wax spraying mechanism also includes a wax spraying box, which includes an upper box and a lower box. The lower box is fixedly connected to the frame, and the upper box and the lower box are hinged together. The upper box and the lower box form a cavity, and the conveyor line passes through the cavity.

9. The electrostatic wax spraying equipment for the internal thread of a nut according to claim 1, characterized in that, Guide plates are provided on both sides of the frame, and both sides of the connecting plate can abut against the guide plates.

10. A method for electrostatic wax spraying of the internal thread of a nut, characterized in that, The electrostatic wax spraying equipment for the internal threads of nuts according to any one of claims 1 to 9, wherein the electrostatic wax spraying method for the internal threads of nuts comprises: The nut is arranged in the positioning hole, and the first cover plate and the second cover plate are connected to both sides of the connecting plate, so that the nut is confined in the positioning hole; The connecting plate is arranged on the conveyor line to drive the connecting plate to move above the wax spraying assembly, so that the connecting plate abuts against the conductive sheet, so that the connecting plate is charged with static electricity, and the wax mist is sprayed out of the positioning hole through the wax spraying assembly so that the wax mist adheres to the internal thread of the nut. The conveyor line drives the connecting plate to move between the two wax suction components, the second electrostatic generator causes the recycling box to become electrostatically charged, and the fan drives the airflow from the wax suction components to the recycling box, so that the wax mist can be recycled into the recycling box. The conveyor line drives the connecting plate to move below the air blower, heats the air through the heating element, and blows it through the air blower toward the positioning hole to heat the wax in the nut.

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