Surface coating device for fastener machining

Abstract

The invention relates to the technical field of coating devices, and discloses a surface coating device for fastener machining, which comprises a supporting table, a dip-coating groove is fixedly connected to the surface of the supporting table, a supporting seat is slidably connected to the outer wall of the supporting table through a sliding rail, a dip-coating mechanism is arranged in the supporting seat, and the dip-coating mechanism comprises a dip-coating basket. The dip-coating device comprises a dip-coating basket, the dip-coating basket is used for containing fasteners, the inner wall of the dip-coating basket is fixedly connected with a bottom plate, the top face of the bottom plate is in a wave shape, the bottom plate is used for reducing the contact area with the fasteners, the bottom of the bottom plate is fixedly connected with stirring blades, and the stirring blades are used for stirring a coating solution. The dip-coating mechanism is arranged to drive the fastener to rotate for coating, and the coating liquid is stirred in the rotating process, so that solid substances in the coating solution are prevented from easily precipitating in a standing state, the concentration uniformity of the upper layer and the lower layer of the coating solution is ensured, and meanwhile, the uniformity of a coating layer of the fastener is ensured.

Description

Technical Field

[0001] This invention relates to the field of coating apparatus technology, specifically to a surface coating apparatus for fastener processing. Background Technology

[0002] The surface coating device for fastener processing is used to coat fasteners to meet the surface protection requirements of fastener processing and provide stable protection for fastener applications.

[0003] Patent application CN202511130942.6 discloses a surface treatment device for high-strength corrosion-resistant fasteners, including a support base. The support base is equipped with a treatment mechanism and a drying mechanism. The treatment mechanism includes an immersion tank fixedly installed at the bottom of the support base. An immersion plate is provided above the immersion tank, and the surface of the immersion plate is provided with mounting holes.

[0004] During the coating process of fasteners by the surface coating device, solids in the coating solution are prone to precipitation when left to stand, resulting in uneven concentration between the upper and lower layers of the solution and affecting the uniformity of the coating layer. At the same time, fasteners accumulate and come into contact with the inner wall of the equipment, causing some areas of the fasteners to be unable to contact the solution, resulting in missed coating and affecting product quality. Summary of the Invention

[0005] The purpose of this invention is to provide a surface coating apparatus for fastener processing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a surface coating device for fastener processing, comprising a support platform, an immersion coating tank fixedly connected to the surface of the support platform, a support seat slidably connected to the outer wall of the support platform via a slide rail, and an immersion coating mechanism disposed inside the support seat; The dip coating mechanism includes a dip coating basket for holding fasteners. A base plate is fixedly connected to the inner wall of the dip coating basket. The top surface of the base plate is corrugated to reduce the contact area with the fasteners. A stirring blade is fixedly connected to the bottom of the base plate for stirring the coating solution. A flow-blocking plate is fixedly connected to the inner wall of the stirring blade for guiding the coating solution. A sliding groove is formed at the top of the base plate, and a flow-guiding hole is formed on the inner wall of the base plate. The flow-guiding hole communicates with the interior of the sliding groove and is used to guide the coating solution.

[0007] According to the above technical solution, a second sliding groove is provided in the first sliding groove wall, and a flipping mechanism is provided inside the first sliding groove. The flipping mechanism includes a flipping block, the outer wall of which is slidably connected to the first sliding groove wall, and a connecting pin is inserted into the inner wall of the flipping block. The outer wall of the connecting pin is slidably connected to the second sliding groove wall. The second sliding groove is used to guide and limit the connecting pin. The flipping block slides along the first sliding groove wall and protrudes from the top surface of the base plate for flipping the fastener.

[0008] According to the above technical solution, the support base is provided with a clamping mechanism, which includes a drive sleeve. The outer wall of the drive sleeve is rotatably connected to the inner wall of the support base through a bearing. A support rod is fixedly connected to the inner wall of the drive sleeve through a thread. A turntable is fixedly connected to the outer wall of the support rod through a thread. A spring is fixedly connected to the surface of the turntable. A synchronization disk is fixedly connected to the other end of the spring. A gripper is slidably connected to the inner wall of the synchronization disk through a slider. A guide groove is opened on the inner wall of the turntable. The outer wall of the gripper is slidably connected to the groove wall of the guide groove through a slider. The inner wall of the gripper is used to clamp the outer wall of the dip-coating basket.

[0009] According to the above technical solution, the top of the drive sleeve is rotatably connected to a limiting sleeve via a bearing, the bottom of the limiting sleeve is fixedly connected to the top of the support base via bolts, the inner wall of the limiting sleeve is slidably connected to a central rod via a spline, the limiting sleeve is used to restrict the rotation of the central rod, the outer wall of the central rod is rotatably connected to a central sleeve via a bearing, the outer wall of the central sleeve is fixedly connected to the inner wall of the synchronous disc, the bottom of the central rod is inserted into a docking shaft via a spline, and the outer wall of the turntable is inserted into a docking sleeve via a spline.

[0010] According to the above technical solution, a hydraulic cylinder is fixedly connected to the top of the inner wall of the support base. The output end of the hydraulic cylinder is fixedly connected to the surface of the support platform. The hydraulic cylinder is used to drive the support platform to slide along the inner wall of the support base. A hydraulic cylinder is fixedly connected to the top of the support base through a support frame. The output end of the hydraulic cylinder is fixedly connected to the top of the center rod. A motor is fixedly connected to the top of the support base. The output end of the motor is connected to the outer wall of the drive sleeve through a synchronous belt. The hydraulic cylinder is used to drive the center rod to slide on the inner wall of the limiting sleeve. The motor is used to drive the drive sleeve to rotate on the inner wall of the support base.

[0011] According to the above technical solution, the bottom of the docking shaft is rotatably connected to the inner wall of the base plate through a bearing, the central rod is used to restrict the rotation of the docking shaft, a circulation groove is provided on the outer wall of the docking shaft, the bottom of the docking sleeve is fixedly connected to the top of the base plate through a thread, a guide groove is provided on the outer wall of the docking sleeve, and the turntable is used to center the base plate through the docking sleeve.

[0012] According to the above technical solution, a sliding sleeve is fixedly connected to the end of the connecting pin away from the flipping block. The outer wall of the sliding sleeve is slidably connected to the inner wall of the docking sleeve. The sliding sleeve rotates along the outer wall of the docking shaft. A guide ball is covered and connected to the inner wall of the sliding sleeve. The outer wall of the guide ball rolls along the wall of the circulation groove to drive the sliding sleeve to slide back and forth on the outer wall of the docking shaft.

[0013] According to the above technical solution, the top of the flipping block is provided with a nozzle, which penetrates the flipping block and communicates with the interior of the sliding groove. The nozzle is used to guide the coating liquid. The top of the flipping block is wavy to reduce the contact area with the fastener. The outer wall of the connecting pin is slidably connected to the wall of the guide groove. The position of the guide groove matches the position of the sliding groove. The guide groove is used to guide the connecting pin.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention uses a dip-coating mechanism to rotate the fastener for coating, and agitates the coating liquid during the rotation process to prevent solids in the coating solution from easily precipitating when stationary, thus ensuring the uniformity of the concentration of the upper and lower layers of the coating solution, and at the same time ensuring the uniformity of the coating layer on the fastener.

[0015] 2. The present invention guides the coating liquid through the dip coating mechanism, so that the coating liquid flows quickly in the gaps of the fasteners located at the bottom layer, preventing the coating liquid from reducing its concentration due to reduced fluidity in the dip coating basket, ensuring the uniformity of the coating liquid concentration in the gaps of the fasteners, and increasing the uniformity of the fastener coating layer.

[0016] 3. The present invention uses a flipping mechanism to flip the fasteners, thereby reducing the contact time between the fasteners and the inner wall of the equipment during the coating process, preventing localized missed coating of the fasteners, and increasing the uniformity of the coating thickness of the fasteners.

[0017] 4. The present invention uses a flipping mechanism to squeeze the coating liquid, causing the coating liquid to be sprayed onto the fastener through the nozzle, so that the coating liquid flows quickly at the bottom of the fastener and coats the fastener, preventing the coating liquid from depositing in the dip-coating basket and causing a decrease in concentration, thereby increasing the uniformity of the coating layer on the fastener.

[0018] 5. The present invention clamps the dip-coating basket by setting a clamping mechanism and centers the dip-coating basket to prevent the dip-coating basket from causing the fastener to rotate eccentrically and generate inertia, which would cause the dip-coating basket to fall off the clamp, thereby increasing the stability of the coating device for coating the fastener. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the clamping mechanism and the dip coating mechanism of the present invention; Figure 3 This is a cross-sectional view of the clamping mechanism of the present invention; Figure 4 This is a schematic diagram of the dip coating mechanism of the present invention; Figure 5 A cross-sectional view of the dip coating mechanism of the present invention. Figure 1 ; Figure 6 A cross-sectional view of the dip coating mechanism of the present invention. Figure 2 ; Figure 7 A cross-sectional view of the dip coating mechanism of the present invention. Figure 3 ; Figure 8 This is a schematic diagram of the flipping mechanism of the present invention; Figure 9 This is a cross-sectional view of the flipping mechanism of the present invention.

[0020] In the diagram: 100, support platform; 101, immersion tank; 102, support base; 103, hydraulic cylinder one; 104, hydraulic cylinder two; 105, motor; 200, clamping mechanism; 201, drive sleeve; 202, support rod; 203, turntable; 204, spring; 205, guide groove one; 206, gripper; 207, center sleeve; 208, synchronous disc; 209, center rod; 210, limit sleeve; 211. 212. Docking shaft; 213. Circulation tank; 214. Guide groove II; 300. Dipping mechanism; 301. Dipping basket; 302. Stirring blade; 303. Cut-off plate; 304. Base plate; 305. Sliding groove I; 306. Guide hole; 307. Sliding groove II; 400. Tilting mechanism; 401. Tilting block; 402. Connecting pin; 403. Sliding sleeve; 404. Nozzle; 405. Guide ball. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, please refer to Figures 1-3 The present invention provides a technical solution: a surface coating device for fastener processing, including a support platform 100, an immersion coating tank 101 fixedly connected to the surface of the support platform 100, and a support seat 102 slidably connected to the outer wall of the support platform 100 via a slide rail. The support base 102 is equipped with a clamping mechanism 200. During the coating process of fasteners by the surface coating device, solids in the coating solution are prone to precipitation when left to stand, resulting in uneven concentration between the upper and lower layers of the solution and affecting the uniformity of the coating layer. At the same time, fasteners accumulate and come into contact with the inner wall of the equipment, causing some areas of the fasteners to be unable to contact the solution, resulting in missed coating and affecting product quality. Therefore, a clamping mechanism 200 is set up to clamp the dip-coating basket 301 and center the dip-coating basket 301 to prevent the dip-coating basket 301 from causing the fasteners to rotate eccentrically and generate inertia, which would cause the dip-coating basket 301 to fall out of the clamp, thereby increasing the stability of the coating device for fasteners. The clamping mechanism 200 includes a drive sleeve 201. The outer wall of the drive sleeve 201 is rotatably connected to the inner wall of the support base 102 via a bearing. A support rod 202 is threadedly fixed to the inner wall of the drive sleeve 201. A turntable 203 is threadedly fixed to the outer wall of the support rod 202. A spring 204 is fixedly connected to the surface of the turntable 203. A timing disc 208 is fixedly connected to the other end of the spring 204. A gripper 206 is slidably connected to the inner wall of the timing disc 208 via a slider. The inner wall of the turntable 203... The wall has a guide groove 205. The outer wall of the gripper 206 is slidably connected to the wall of the guide groove 205 via a slider. The inner wall of the gripper 206 is used to clamp the outer wall of the dipping basket 301. The top of the drive sleeve 201 is rotatably connected to the limit sleeve 210 via a bearing. The bottom of the limit sleeve 210 is fixedly connected to the top of the support base 102 via bolts. The inner wall of the limit sleeve 210 is slidably connected to the center rod 209 via a spline. The limit sleeve 210 is used to limit the rotation of the center rod 209. A central sleeve 207 is rotatably connected to the outer wall of the center rod 209 via bearings. The outer wall of the central sleeve 207 is fixedly connected to the inner wall of the synchronous disc 208. A mating shaft 211 is inserted into the bottom of the center rod 209 via a spline. A mating sleeve 212 is inserted into the outer wall of the turntable 203 via a spline. A hydraulic cylinder 103 is fixedly connected to the top of the inner wall of the support base 102. The output end of the hydraulic cylinder 103 is fixedly connected to the surface of the support platform 100. The hydraulic cylinder 103 is used to drive the support platform 100 along the support base 102. The inner wall slides, and the top of the support base 102 is fixedly connected to the hydraulic cylinder 104 via a support frame. The output end of the hydraulic cylinder 104 is fixedly connected to the top of the center rod 209. The top of the support base 102 is fixedly connected to the motor 105. The output end of the motor 105 is connected to the outer wall of the drive sleeve 201 via a synchronous belt. The hydraulic cylinder 104 is used to drive the center rod 209 to slide on the inner wall of the limit sleeve 210, and the motor 105 is used to drive the drive sleeve 201 to rotate on the inner wall of the support base 102. When the surface coating device for fastener processing is put into use, the coating liquid is injected into the dipping tank 101, and the fastener is placed in the dipping basket 301. Then, the hydraulic cylinder 104 is activated to drive the center rod 209, causing the center sleeve 207 to slide downward on the inner wall of the drive sleeve 201. This causes the center sleeve 207 to drive the timing disc 208 to compress the spring 204, which slides downward on the outer wall of the support rod 202. This causes the gripper 206 to slide downward on the inner wall of the timing disc 208 through the guide groove 205, opening the gripper 206 and placing the dipping basket 301 at the bottom of the turntable 203. The device is then retracted and driven by the hydraulic cylinder 104. The core rod 209 drives the center sleeve 207 to slide upward on the inner wall of the drive sleeve 201, causing the center sleeve 207 to drive the synchronous disc 208 to compress the spring 204 to slide upward on the outer wall of the support rod 202. This causes the gripper 206 to slide upward on the inner wall of the synchronous disc 208 through the guide groove 205, and then slide towards the dip-coating basket 301, clamping the outer wall of the dip-coating basket 301. After the dip-coating basket 301 is clamped, the hydraulic cylinder 103 is activated to drive the support platform 100 to slide upward on the inner wall of the support base 102, causing the support platform 100 to lift the dip-coating tank 101, thus allowing the dip-coating... The coating basket 301 is placed inside the immersion coating tank 101, immersing the fasteners in the coating liquid for coating. During the coating process, the motor 105 drives the drive sleeve 201 to rotate inside the support base 102, causing the drive sleeve 201 to drive the turntable 203 and the synchronous disk 208 to rotate synchronously via the support rod 202. The center sleeve 207 is fixedly connected to the inner wall of the synchronous disk 208 and rotates on the outer wall of the center rod 209. The center rod 209 is limited by the spline on the inner wall of the limiting sleeve 210 to prevent rotation. The fasteners inside the immersion coating basket 301 are held in place by the grippers 206. The clamping mechanism rotates synchronously with the turntable 203, allowing the fasteners to be coated in the coating solution by rotating the dip basket 301. After the fasteners are coated, the hydraulic cylinder 104 drives the center rod 209 to slide the center sleeve 207 downward on the inner wall of the drive sleeve 201. The center sleeve 207 then drives the synchronous disc 208 to compress the spring 204 and slide it downward on the outer wall of the support rod 202. This causes the gripper 206 to slide on the inner wall of the synchronous disc 208 through the guide groove 205, opening the gripper 206 to release it from the dip basket 301. The coated fasteners are then poured out, ready for the next coating operation.

[0023] Example 2, based on Example 1, please refer to... Figures 4-7 The present invention provides a technical solution: the support base 102 is provided with an impregnation mechanism 300; During the coating process of fasteners by a surface coating device, solids in the coating solution are prone to precipitation when left to stand, leading to uneven concentration between the upper and lower layers of the solution and affecting the uniformity of the coating layer. Simultaneously, fasteners accumulating and contacting the inner wall of the equipment can cause localized areas of the fasteners to be unable to contact the solution, resulting in missed coating and affecting product quality. Therefore, an immersion coating mechanism 300 is installed to rotate the fasteners for coating. During rotation, the coating liquid is agitated to prevent the solids in the coating solution from precipitating when left to stand, ensuring uniform concentration between the upper and lower layers of the coating solution and the uniformity of the fastener coating layer. Furthermore, the immersion coating mechanism 300 guides the coating liquid, allowing it to flow rapidly through the gaps in the bottom layer of the fasteners, preventing a decrease in concentration due to reduced fluidity within the immersion basket 301, thus ensuring uniform concentration of the coating liquid in the fastener gaps and increasing the uniformity of the fastener coating layer. The dip coating mechanism 300 includes a dip coating basket 301 for holding fasteners. A base plate 304 is fixedly connected to the inner wall of the dip coating basket 301. The top surface of the base plate 304 is corrugated to reduce the contact area with the fasteners. A stirring blade 302 is fixedly connected to the bottom of the base plate 304 for stirring the coating solution. A flow intercepting plate 303 is fixedly connected to the inner wall of the stirring blade 302 for guiding the coating solution. A sliding groove 305 is formed on the top of the base plate 304, and a groove is formed on the inner wall of the base plate 304. There is a flow guide hole 306, which is connected to the inside of the sliding groove 305. The flow guide hole 306 is used to guide the coating solution. The bottom of the docking shaft 211 is rotatably connected to the inner wall of the base plate 304 through a bearing. The center rod 209 is used to restrict the rotation of the docking shaft 211. A circulation groove 213 is opened on the outer wall of the docking shaft 211. The bottom of the docking sleeve 212 is fixedly connected to the top of the base plate 304 through a thread. A guide groove 214 is opened on the outer wall of the docking sleeve 212. The turntable 203 is used to center the base plate 304 through the docking sleeve 212. After the fastener is placed inside the dip coating basket 301, the dip coating basket 301 is placed at the bottom of the turntable 203. The basket is then connected to the bottom of the turntable 203 via a mating sleeve 212, and centered using a base plate 304. Simultaneously, the mating sleeve 212 is splined to the turntable 203, and the base plate 304 is threadedly connected to the mating sleeve 212. At the same time, the grippers 206 clamp the dip coating basket 301, causing the base plate 304 and the dip coating basket 301 to rotate synchronously with the fastener and the turntable 203. During rotation, the base plate 304 remains coaxial with the turntable 203 to prevent inertia from causing the basket 301's axis to deviate from the turntable 203's axis during rotation. During the coating process of fasteners in the coating liquid in the dipping tank 101 through the dipping basket 301, the bottom plate 304 drives the stirring blade 302 to stir the coating liquid, preventing the precipitation of solids in the coating liquid and causing uneven concentration between the upper and lower layers of the coating liquid. As the stirring blade 302 rotates and stirs the coating liquid, the coating liquid flows along the outer wall of the stirring blade 302 and generates centrifugal force. The flow interception plate 303 intercepts the coating liquid, allowing the coating liquid to enter the sliding tank 305 through the guide hole 306 and flow from the bottom of the dipping basket 301 towards the fastener to coat the fastener. At the same time, the wavy surface of the bottom plate 304 reduces the contact area with the fastener and reduces the area of ​​the fastener that is not coated.

[0024] Example 3, based on Examples 1 and 2, please refer to... Figures 8-9 The present invention provides a technical solution: a sliding groove 307 is provided on the wall of the sliding groove 305, and a flipping mechanism 400 is provided inside the sliding groove 305; During the coating process of fasteners by the surface coating device, solids in the coating solution are prone to precipitation when left to stand, resulting in uneven concentration between the upper and lower layers of the solution and affecting the uniformity of the coating layer. At the same time, fasteners pile up and contact the inner wall of the equipment, causing some areas of the fasteners to be unable to contact the solution, resulting in missed coating and affecting product quality. Therefore, a turning mechanism 400 is set up to turn the fasteners, reduce the contact time between the fasteners and the inner wall of the equipment during the coating process, prevent missed coating in some areas of the fasteners, and increase the uniformity of the coating layer thickness. At the same time, the turning mechanism 400 squeezes the coating liquid, causing the coating liquid to be sprayed onto the fasteners through the nozzle 404, so that the coating liquid flows quickly at the bottom of the fasteners and coats the fasteners. This prevents the coating liquid from depositing in the dip-coating basket 301, which would reduce the concentration and increase the uniformity of the fastener coating layer. The flipping mechanism 400 includes a flipping block 401. The outer wall of the flipping block 401 is slidably connected to the wall of the sliding groove 305. A connecting pin 402 is inserted into the inner wall of the flipping block 401. The outer wall of the connecting pin 402 is slidably connected to the wall of the sliding groove 307. The sliding groove 307 is used to guide and limit the connecting pin 402. The flipping block 401 slides along the wall of the sliding groove 305 and protrudes from the top surface of the base plate 304 for flipping fasteners. A sliding sleeve 403 is fixedly connected to the end of the connecting pin 402 away from the flipping block 401. The outer wall of the sliding sleeve 403 is slidably connected to the inner wall of the mating sleeve 212. The sliding sleeve 403 rotates along the outer wall of the mating shaft 211. The wall is covered with guide ball 405, the outer wall of the guide ball 405 rolls along the wall of the circulation groove 213, and is used to drive the sliding sleeve 403 to slide back and forth on the outer wall of the docking shaft 211. The top of the flipping block 401 is provided with a nozzle 404, which passes through the flipping block 401 and communicates with the interior of the sliding groove 305. The nozzle 404 is used to guide the coating liquid. The top of the flipping block 401 is wavy to reduce the contact area with the fastener. The outer wall of the connecting pin 402 is slidably connected to the wall of the guide groove 214. The position of the guide groove 214 matches the position of the sliding groove 307. The guide groove 214 is used to guide the connecting pin 402. During the coating process of the fasteners by rotating the coating basket 301 and the base plate 304, the center rod 209 is restricted from rotating by inserting into the limiting sleeve 210 through a spline. This restricts the rotation of the center rod 209, causing the mating shaft 211 to be inserted into the center rod 209, further restricting its rotation. Simultaneously, the mating sleeve 212 drives the base plate 304 to rotate. At the same time, the connecting pin 402, within the sliding groove 307, drives the flipping block 401 to rotate through the rotation of the base plate 304, and simultaneously causes the sliding sleeve 403 to rotate on the outer wall of the mating shaft 211. 3. During the rotation of the outer wall of the docking shaft 211, the guide ball 405 rolls along the wall of the circulation groove 213, causing the guide ball 405 to drive the sliding sleeve 403 to reciprocate up and down on the outer wall of the docking shaft 211. This causes the sliding sleeve 403 to drive the flipping block 401 to reciprocate within the first sliding groove 305 via the connecting pin 402. Simultaneously, when the connecting pin 402 slides to the apex of the second sliding groove 307, the connecting pin 402 causes the flipping block 401 to protrude from the surface of the base plate 304, supporting the fasteners and causing the flipping block 401 to... 1. The fasteners on the surface slide towards the surface of the base plate 304, flipping the fasteners. When the connecting pin 402 slides to its lowest point in the sliding groove 307, the flipping block 401 is at the bottom of the sliding groove 305 and below the surface of the base plate 304. This causes the fasteners to slide towards the surface of the flipping block 401 by their own weight, flipping the fasteners and preventing them from remaining stationary in the dipping basket 301 and contacting the inner wall of the dipping basket 301, which could lead to missed coating. At the same time, the fasteners are flipped evenly, making the coating surface of the fasteners more uniform. While the agitator 401 slides up and down and reciprocates in the sliding groove 305, it guides the coating liquid into the sliding groove 305 through the guide hole 306. The agitator 401 reciprocates in the sliding groove 305, squeezing the coating liquid and spraying it onto the fastener through the nozzle 404. This allows the coating liquid to flow quickly at the bottom of the fastener and coat it, preventing the coating liquid from settling in the dip basket 301, which would reduce the concentration and affect the uniformity of the fastener coating.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface coating device for fastener processing, comprising a support table (100), a dip coating tank (101) is fixedly connected to the surface of the support table (100), and a support seat (102) is slidingly connected to the outer wall of the support table (100) through a slide rail, characterized in that, The support base (102) is provided with an impregnation mechanism (300). The dip coating mechanism (300) includes; A dip-coating basket (301) is used to hold fasteners. A base plate (304) is fixedly connected to the inner wall of the dip-coating basket (301). The top surface of the base plate (304) is wavy to reduce the contact area with the fasteners. A stirring blade (302) is fixedly connected to the bottom of the base plate (304). The stirring blade (302) is used to stir the coating solution. A flow-blocking plate (303) is fixedly connected to the inner wall of the stirring blade (302). The flow-blocking plate (303) is used to guide the coating solution. A sliding groove (305) is opened at the top of the base plate (304). A flow-guiding hole (306) is opened on the inner wall of the base plate (304). The flow-guiding hole (306) is connected to the sliding groove (305) and is used to guide the coating solution.

2. The apparatus according to claim 1, wherein: The sliding groove one (305) has a sliding groove two (307) on its groove wall. The sliding groove one (305) is provided with a flipping mechanism (400). The flipping mechanism (400) includes a flipping block (401). The outer wall of the flipping block (401) is slidably connected to the groove wall of the sliding groove one (305). A connecting pin (402) is inserted into the inner wall of the flipping block (401). The outer wall of the connecting pin (402) is slidably connected to the groove wall of the sliding groove two (307). The sliding groove two (307) is used to guide and limit the connecting pin (402). The flipping block (401) slides along the groove wall of the sliding groove one (305) and protrudes from the top surface of the base plate (304) for flipping the fastener.

3. The apparatus according to claim 1, wherein: The support base (102) is provided with a clamping mechanism (200). The clamping mechanism (200) includes a drive sleeve (201). The outer wall of the drive sleeve (201) is rotatably connected to the inner wall of the support base (102) through a bearing. The inner wall of the drive sleeve (201) is fixedly connected to a support rod (202) through a thread. The outer wall of the support rod (202) is fixedly connected to a turntable (203) through a thread. A spring (204) is fixedly connected to the surface of the turntable (203). The other end of the spring (204) is fixedly connected to a synchronous disk (208). The inner wall of the synchronous disk (208) is slidably connected to a gripper (206) through a slider. The inner wall of the turntable (203) is provided with a guide groove (205). The outer wall of the gripper (206) is slidably connected to the groove wall of the guide groove (205) through a slider. The inner wall of the gripper (206) is used to clamp the outer wall of the dip coating basket (301).

4. The apparatus according to claim 3, wherein: The top of the drive sleeve (201) is rotatably connected to the limiting sleeve (210) via a bearing. The bottom of the limiting sleeve (210) is fixedly connected to the top of the support base (102) via bolts. The inner wall of the limiting sleeve (210) is slidably connected to the center rod (209) via a spline. The limiting sleeve (210) is used to restrict the rotation of the center rod (209). The outer wall of the center rod (209) is rotatably connected to the center sleeve (207) via a bearing. The outer wall of the center sleeve (207) is fixedly connected to the inner wall of the synchronous disc (208). The bottom of the center rod (209) is inserted with a docking shaft (211) via a spline. The outer wall of the turntable (203) is inserted with a docking sleeve (212) via a spline.

5. The apparatus according to claim 4, wherein: A hydraulic cylinder (103) is fixedly connected to the top of the inner wall of the support base (102). The output end of the hydraulic cylinder (103) is fixedly connected to the surface of the support platform (100). The hydraulic cylinder (103) is used to drive the support platform (100) to slide along the inner wall of the support base (102). A hydraulic cylinder (104) is fixedly connected to the top of the support base (102) through a support frame. The output end of the hydraulic cylinder (104) is fixedly connected to the top of the center rod (209). A motor (105) is fixedly connected to the top of the support base (102). The output end of the motor (105) is connected to the outer wall of the drive sleeve (201) through a synchronous belt. The hydraulic cylinder (104) is used to drive the center rod (209) to slide on the inner wall of the limiting sleeve (210). The motor (105) is used to drive the drive sleeve (201) to rotate on the inner wall of the support base (102).

6. A surface coating apparatus for fastener manufacturing as defined in claim 5, wherein: The bottom of the docking shaft (211) is rotatably connected to the inner wall of the base plate (304) via a bearing. The center rod (209) is used to restrict the rotation of the docking shaft (211). A circulation groove (213) is provided on the outer wall of the docking shaft (211). The bottom of the docking sleeve (212) is fixedly connected to the top of the base plate (304) via a thread. A guide groove (214) is provided on the outer wall of the docking sleeve (212). The turntable (203) is used to center the base plate (304) via the docking sleeve (212).

7. The apparatus according to claim 2, wherein: The connecting pin (402) is fixedly connected to a sliding sleeve (403) at the end away from the flipping block (401). The outer wall of the sliding sleeve (403) is slidably connected to the inner wall of the docking sleeve (212). The sliding sleeve (403) rotates along the outer wall of the docking shaft (211). The inner wall of the sliding sleeve (403) is covered with a guide ball (405). The outer wall of the guide ball (405) rolls along the groove wall of the circulation groove (213) to drive the sliding sleeve (403) to slide back and forth on the outer wall of the docking shaft (211).

8. The apparatus according to claim 7, wherein: The top of the flipping block (401) is provided with a nozzle (404), which penetrates the flipping block (401) and communicates with the interior of the sliding groove (305). The nozzle (404) is used to guide the coating liquid. The top of the flipping block (401) is wavy to reduce the contact area with the fastener. The outer wall of the connecting pin (402) is slidably connected to the groove wall of the guide groove (214). The opening position of the guide groove (214) matches the position of the sliding groove (307). The guide groove (214) is used to guide the connecting pin (402).

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