A high-efficiency coating device for bolt processing and a method of using the same

Abstract

The application relates to the field of bolt processing, and discloses a high-efficiency coating device for bolt processing and a use method thereof. The application aims to solve the problem that the oil is usually brushed on the threads of the bolt by using a brush to dip the oil, so as to prevent the bolt from rusting, and the oil coating mode consumes a large amount of manpower and time and has low work efficiency. The high-efficiency coating device for bolt processing and the use method thereof are composed of a constant-speed material conveying mechanism, a directional conveying mechanism and a bolt rotating mechanism. The high-efficiency coating device for bolt processing and the use method thereof are characterized in that the rotating pipe is intermittently rotated clockwise by a transmission motor, a plurality of spiral pieces are simultaneously rotated, the bolts clamped between the spiral pieces are conveyed to the right, the bolts in the shell are continuously conveyed to the right, the rod part of the bolt is in contact with the liquid in the coating pool after the bolt is moved to the lower side of the connecting plate under the action of the spiral piece thrust, and the high-efficiency coating of the bolt is realized.

Description

Technical Field

[0001] This invention relates to the field of bolt processing, specifically to a high-efficiency coating device for bolt processing and its application method. Background Technology

[0002] Bolts are mechanical parts, cylindrical threaded fasteners that are used with nuts. They consist of a head and a shank (a cylinder with external threads), and are used to fasten two parts with through holes. After production, bolts require anti-corrosion treatment on their threads.

[0003] The existing method of applying oil to the threads of bolts with a brush to prevent rust is labor-intensive and time-consuming, with low efficiency. Furthermore, it is difficult to ensure that the threads of the bolts are fully in contact with the oil, making it difficult to guarantee the quality of the oil coating. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency coating device for bolt processing and its method of use, to solve the problems mentioned in the background art, which typically uses a brush to apply oil to the threads of bolts to prevent corrosion. This oiling method is labor-intensive and time-consuming, has low efficiency, and makes it difficult to ensure that the threads of the bolt are fully in contact with the oil, thus affecting the quality of the oil coating. To achieve the above objective, this invention provides the following technical solution: a high-efficiency coating device for bolt processing, comprising a coating tank, a constant-speed conveying mechanism installed on the left side of the top surface of the coating tank, and a directional conveying mechanism installed on the right side of the constant-speed conveying mechanism, with the directional conveying mechanism also installed on the right side of the top surface of the coating tank;

[0005] The directional conveying mechanism is equipped with a bolt rotating mechanism inside. The bolts are conveyed to the directional conveying mechanism at a constant speed by the constant speed conveying mechanism and then conveyed into the coating tank. The bolt rotating mechanism is used to coat the threaded areas of the bolts immersed in the coating tank.

[0006] Preferably, the constant speed feeding mechanism includes a housing fixed on the left side of the top surface of the coating tank, a fixed motor is installed on the back of the housing, one end of the rotating shaft of the fixed motor extends into the interior of the housing and is fixedly connected to a feeding disc, and the feeding disc has a groove.

[0007] The housing is equipped with an inlet pipe and an outlet pipe, both of which are inclined. The inlet pipe, outlet pipe and groove hole diameter are the same.

[0008] The discharge pipe has a through groove.

[0009] Preferably, the directional conveying mechanism includes two limiting slide rails, one end of each of the two limiting slide rails is fixed to one end of the discharge pipe, and a bearing is provided on the outer side of the left end of the two limiting slide rails, and the outer ring of the bearing is fixed to the housing.

[0010] A connecting plate is fixedly connected to one side of each of the two limiting slide rails. A connecting frame is fixedly connected to the right side of each of the two limiting slide rails. A heating tube is fixedly connected to the end of the connecting frame away from the limiting slide rail. The heating tube is fixed to the coating tank. A rotating tube is rotatably connected to the left end of the heating tube. The outer side of the rotating tube is connected to a drive motor fixed to the rear side of the coating tank via a belt.

[0011] Multiple protrusions are fixedly connected to the inner walls of the rotating tube and the bearing, and the multiple protrusions are distributed in a ring. A spiral blade is fixedly connected to each of the multiple protrusions. The multiple spiral blades form a double-cone hollow tube body, and the inner side of the multiple spiral blades overlaps with the side of the two limiting slide rails.

[0012] Preferably, the bolt rotating mechanism includes a rotating gear rotatably connected to the connecting plate, the rotating gear meshing with two toothed plates, the two toothed plates being symmetrically distributed on both sides of the rotating gear, a sliding plate being fixedly connected to the lower side of the toothed plates, and the sliding plate being slidably connected to a groove opened on the side of the limiting slide rail;

[0013] A first spring telescopic rod is fixedly connected to the skateboard. Two folding plates are hinged to the end of the first spring telescopic rod, and the end of the folding plate away from the first spring telescopic rod is hinged to the outer tube of the first spring telescopic rod.

[0014] Preferably, the bolt rotating mechanism further includes a rectangular groove formed on the connecting plate, an L-shaped rod slidably connected inside the rectangular groove, one end of the L-shaped rod being fixed to one of the toothed plates, the lower end of the L-shaped rod being an inclined surface, a spring retraction rod being fixedly connected to the L-shaped rod, and the end of the spring retraction rod away from the L-shaped rod being fixed inside the rectangular groove.

[0015] Preferably, two wedge plates are symmetrically fixedly connected to the lower side of the inner wall of the coating tank. An arc plate is hinged to the opposite side of each of the two wedge plates. A second spring telescopic rod is hinged to the outer side of the arc plate. The end of the second spring telescopic rod away from the arc plate is hinged to the wedge plate, and the wedge plate is on the lower side of the connecting plate.

[0016] Preferably, an arc-shaped protective plate is installed on the coating pool, and the inner side of the arc-shaped protective plate overlaps with the outer side of the spiral blade.

[0017] Preferably, the method of using the high-efficiency coating device for bolt processing includes the following steps:

[0018] S1: The bolts to be coated are fed into the feed pipe, so that the bolts fall into the groove on the feed plate. Then, the intermittent rotation of the fixed motor drives the individual bolts in the groove to rotate. When the bolt rotates to the outlet of the discharge pipe, it falls at an angle between the two limit slide rails. The shank of the bolt deflects under its own gravity and swings along the through groove between the two limit slide rails. As the shank of the bolt moves down, it enters the spiral groove between multiple spiral blades. At this time, the shank of the bolt is vertically downward under the action of gravity, and the head of the bolt is stuck on the two limit slide rails.

[0019] S2: At this time, the drive motor drives the rotating tube to rotate intermittently clockwise, causing multiple spiral blades to rotate simultaneously, which feeds the bolt stuck between them to the right, ensuring that the bolt in the housing is continuously fed to the right. When the bolt moves to the lower side of the connecting plate under the thrust of the spiral blades, the shank of the bolt contacts the liquid inside the coating tank. Then, as the shank of the bolt continues to move to the right, it contacts the arc plate, ensuring that the threads on the bolt surface contact the liquid inside the coating tank, scraping out the gas in the threads on the bolt surface. Then, the shank of the bolt continues to move to the right under the action of the spiral blades. When the head of the bolt contacts the outer side of the folding plate, the first spring telescopic rod retracts, increasing the frictional resistance between the bolt head and the folding plate, causing the shank of the bolt to rotate, increasing the fluidity of the liquid in the coating tank at the shank of the bolt.

[0020] S3: When the head of the bolt moves under the action of the spiral blade and abuts against the inclined surface at the lower end of the L-shaped rod, the L-shaped rod drives the rear toothed plate to move to the right. When the rear toothed plate moves to the right, it cooperates with the rotating gear to drive the front toothed plate to move to the left, so that the slide plates on the lower side of the two toothed plates move in opposite directions in the slide groove, so that the folding plates on the opposite sides of the two slide plates move in opposite directions, and push the end of the bolt that has moved to the space between the two slide plates, so that the shank of the bolt rotates in the coating pool.

[0021] When the inclined surface at the lower end of the L-shaped rod is pushed by the nut, it pulls the spring retraction rod to extend. When the spring retraction rod reaches its maximum value, the inclined surface at the lower end of the L-shaped rod moves upward and separates from the bolt head under the action of the bolt head's resistance. At this time, the spring retraction rod retracts and resets. The bolt head is rotated again by the folding plate. Finally, the bolt moves to the inside of the heating tube and is dried by the heating tube. Finally, the bolt moves out along the spiral groove between multiple spiral blades, completing the device's coating of the bolt.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] In this invention, bolts are fed into the feed pipe and fall into the groove on the feeding plate. Then, the intermittent rotation of the fixed motor drives the individual bolts in the groove to rotate. When the bolt rotates to the outlet of the discharge pipe, it falls obliquely between the two limit slide rails. The bolt shank deflects under its own gravity and swings along the through groove between the two limit slide rails. As the bolt shank moves down, it enters the spiral groove between multiple spiral blades. At this time, the bolt shank is vertically downward under the action of gravity, realizing the constant speed feeding of the device.

[0024] In this invention, a drive motor drives a rotating tube to rotate intermittently clockwise, causing multiple spiral blades to rotate simultaneously. This conveys the bolts stuck between them to the right, ensuring that the bolts inside the housing are continuously conveyed to the right. When the bolts move to the lower side of the connecting plate under the thrust of the spiral blades, the shank of the bolts comes into contact with the liquid inside the coating tank, achieving efficient coating of the bolts.

[0025] In this invention, as the bolt shank continues to move to the right and comes into contact with the arc-shaped plate, ensuring that the threads on the bolt surface are in contact with the liquid inside the coating tank, the gas inside the threads on the bolt surface is scraped out. Then, the bolt shank continues to move to the right under the action of the spiral blade. When the bolt head comes into contact with the outer side of the folding plate, the first spring telescopic rod retracts, increasing the frictional resistance between the bolt head and the folding plate, causing the bolt shank to rotate, increasing the fluidity of the liquid in the coating tank on the bolt shank, and ensuring the quality of the device coating the bolt.

[0026] In this invention, when the head of the bolt moves under the action of the spiral plate and abuts against the inclined surface at the lower end of the L-shaped rod, the L-shaped rod drives the rear toothed plate to move to the right. When the rear toothed plate moves to the right, it cooperates with the rotating gear to drive the front toothed plate to move to the left, so that the slide plates on the lower side of the two toothed plates move in opposite directions in the slide groove, so that the folding plates on the opposite sides of the two slide plates move in opposite directions, and the end of the bolt that has moved to the space between the two slide plates is actuated, so that the shank of the bolt rotates in the coating pool.

[0027] In this invention, when the inclined surface at the lower end of the L-shaped rod is pushed by the nut, it pulls the spring retraction rod to extend. When the spring retraction rod reaches its maximum value, the inclined surface at the lower end of the L-shaped rod moves upward and separates from the bolt head under the action of the bolt head's resistance. At this time, the spring retraction rod retracts and resets. The folding plate then rotates the bolt head again. Finally, the bolt moves to the inside of the heating tube and is dried by the heating tube. Finally, the bolt moves out along the spiral grooves between the multiple spiral blades, completing the coating of the bolt by the device. Attached Figure Description

[0028] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention;

[0029] Figure 2This is a second three-dimensional structural schematic diagram of the present invention;

[0030] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0031] Figure 4 This is a three-dimensional cross-sectional view of the spiral blade of the present invention;

[0032] Figure 5 This is one of the three-dimensional structural schematic diagrams of the bolt rotating mechanism of the present invention;

[0033] Figure 6 This is a second three-dimensional structural schematic diagram of the bolt rotating mechanism of the present invention;

[0034] Figure 7 This is a three-dimensional cross-sectional view of the limiting slide rail of the present invention;

[0035] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point A in the middle.

[0036] In the diagram: 1. Coating tank; 2. Constant speed conveying mechanism; 21. Housing; 22. Fixed motor; 23. Feeding disc; 24. Groove; 25. Feed pipe; 26. Discharge pipe; 27. Through groove; 3. Directional conveying mechanism; 31. Limiting slide rail; 32. Connecting plate; 33. Connecting frame; 34. Heating tube; 35. Rotating tube; 36. Drive motor; 37. Bearing; 38. Protrusion; 39. Spiral blade; 4. Bolt rotating mechanism; 41. Rotating gear; 42. Toothed plate; 43. Slide plate; 44. Slide groove; 45; 46. Folding plate; 47. Rectangular groove; 48. L-shaped rod; 49. Spring retraction rod; 5. Wedge plate; 6. Arc plate; 7. Second spring telescopic rod; 8. Arc guard plate. Detailed Implementation

[0037] 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.

[0038] Please see Figures 1 to 8 The present invention provides a technical solution: a high-efficiency coating device for bolt processing, including a coating tank 1, a constant speed conveying mechanism 2 installed on the left side of the top surface of the coating tank 1, and a directional conveying mechanism 3 installed on the right side of the constant speed conveying mechanism 2, and the directional conveying mechanism 3 is installed on the right side of the top surface of the coating tank 1; the coating tank 1 is inclined to ensure that the bolts sliding out of the discharge pipe 26 can be stably slid into the spiral grooves between multiple spiral blades 39.

[0039] The directional conveying mechanism 3 is equipped with a bolt rotating mechanism 4. The bolts are conveyed to the directional conveying mechanism 3 at a constant speed by the constant speed conveying mechanism 2 and then conveyed to the coating tank 1. The bolt rotating mechanism 4 is used to coat the threaded area of ​​the bolts immersed in the coating tank 1.

[0040] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the constant speed feeding mechanism 2 includes a housing 21 fixed on the left side of the top surface of the coating tank 1. A fixed motor 22 is installed on the back of the housing 21. One end of the rotating shaft of the fixed motor 22 extends into the interior of the housing 21 and is fixedly connected to a feeding disc 23. A groove 24 is provided on the feeding disc 23.

[0041] The housing 21 is equipped with a feed pipe 25 and a discharge pipe 26, and both the feed pipe 25 and the discharge pipe 26 are inclined. The feed pipe 25, the discharge pipe 26 and the groove 24 have the same diameter.

[0042] A through groove 27 is provided on the discharge pipe 26.

[0043] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the directional conveying mechanism 3 includes two limiting slide rails 31. One end of each limiting slide rail 31 is fixed to one end of the discharge pipe 26, and a bearing 37 is provided on the outer side of the left end of the two limiting slide rails 31, and the outer ring of the bearing 37 is fixed on the housing 21.

[0044] A connecting plate 32 is fixedly connected to one side of the two limiting slide rails 31. A connecting frame 33 is fixedly connected to the right side of each of the two limiting slide rails 31. A heating tube 34 is fixedly connected to the end of the connecting frame 33 away from the limiting slide rail 31. The heating tube 34 is fixed on the coating tank 1. A rotating tube 35 is rotatably connected to the left end of the heating tube 34. The outer side of the rotating tube 35 is connected to the drive motor 36 fixed on the rear side of the coating tank 1 via a belt.

[0045] Multiple protrusions 38 are fixedly connected to the inner walls of the rotating tube 35 and the bearing 37, and the multiple protrusions 38 are distributed in a ring. A spiral blade 39 is fixedly connected to each of the multiple protrusions 38. The multiple spiral blades 39 form a double-cone hollow tube body, and the inner side of the multiple spiral blades 39 overlaps with the side of the two limiting slide rails 31.

[0046] In this embodiment, as Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the bolt rotating mechanism 4 includes a rotating gear 41 rotatably connected to the connecting plate 32. Two toothed plates 42 mesh on the rotating gear 41, and the two toothed plates 42 are symmetrically distributed on both sides of the rotating gear 41. A sliding plate 43 is fixedly connected to the lower side of the toothed plate 42, and the sliding plate 43 is slidably connected to a groove 44 opened on the side of the limiting slide rail 31.

[0047] A first spring telescopic rod 45 is fixedly connected to the skateboard 43. Two folding plates 46 are hinged to the end of the first spring telescopic rod 45, and the end of the folding plate 46 away from the first spring telescopic rod 45 is hinged to the outer tube of the first spring telescopic rod 45.

[0048] In this embodiment, as Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the bolt rotating mechanism 4 also includes a rectangular groove 47 formed on the connecting plate 32. An L-shaped rod 48 is slidably connected inside the rectangular groove 47, and one end of the L-shaped rod 48 is fixed on one of the toothed plates 42. The lower end of the L-shaped rod 48 is an inclined surface. A spring retraction rod 49 is fixedly connected to the L-shaped rod 48, and the end of the spring retraction rod 49 away from the L-shaped rod 48 is fixed inside the rectangular groove 47.

[0049] In this embodiment, as Figure 6 , Figure 7 , Figure 8 As shown, two wedge plates 5 are symmetrically fixedly connected to the lower side of the inner wall of the coating tank 1. An arc plate 6 is hinged to the opposite side of each of the two wedge plates 5. A second spring telescopic rod 7 is hinged to the outer side of the arc plate 6. The end of the second spring telescopic rod 7 away from the arc plate 6 is hinged to the wedge plate 5, and the wedge plate 5 is on the lower side of the connecting plate 32.

[0050] In this embodiment, as Figure 1 , Figure 2 , Figure 4 As shown, an arc-shaped protective plate 8 is installed on the coating tank 1, and the inner side of the arc-shaped protective plate 8 overlaps with the outer side of the spiral blade 39.

[0051] The method of use and advantages of the present invention: The working process of the high-efficiency coating device for bolt processing is as follows:

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown:

[0053] S1: The bolts to be coated are fed into the feed pipe 25, so that the bolts fall into the groove 24 on the feed plate 23. Then, the intermittent rotation of the fixed motor 22 drives the individual bolts in the groove 24 to rotate. When the bolts rotate to the outlet of the discharge pipe 26, they fall at an angle between the two limit slide rails 31. The bolt shank deflects under its own gravity and swings along the through groove 27 between the two limit slide rails 31. As the bolt shank moves down, it enters the spiral groove between multiple spiral blades 39. At this time, the bolt shank is vertically downward under the action of gravity, and the bolt head is stuck on the two limit slide rails 31.

[0054] S2: At this time, the drive motor 36 drives the rotating tube 35 to rotate intermittently clockwise, causing multiple spiral blades 39 to rotate simultaneously, conveying the bolt stuck between them to the right, ensuring that the bolt in the housing 21 is continuously conveyed to the right. When the bolt moves to the right under the connecting plate 32 under the thrust of the spiral blades 39, the bolt shank comes into contact with the liquid inside the coating tank 1. Then, as the bolt shank continues to move to the right, it comes into contact with the arc plate 6, ensuring that the threads on the bolt surface come into contact with the liquid inside the coating tank 1, scraping out the gas in the threads on the bolt surface. Then, the bolt shank continues to move to the right under the action of the spiral blades 39. When the bolt head comes into contact with the outside of the folding plate 46, the first spring telescopic rod 45 retracts, increasing the frictional resistance between the bolt head and the folding plate 46, causing the bolt shank to rotate, increasing the fluidity of the liquid in the coating tank 1 in the bolt shank.

[0055] S3: When the head of the bolt moves under the action of the spiral plate 39 and abuts against the inclined surface at the lower end of the L-shaped rod 48, the L-shaped rod 48 drives the rear toothed plate 42 to move to the right. When the rear toothed plate 42 moves to the right, it cooperates with the rotating gear 41 to drive the front toothed plate 42 to move to the left, so that the slide plates 43 on the lower side of the two toothed plates 42 move in opposite directions in the slide groove 44, so that the folding plates 46 on the opposite side of the two slide plates 43 move in opposite directions, and push the end of the bolt that has moved to the space between the two slide plates 43, so that the shank of the bolt rotates in the coating pool 1.

[0056] When the inclined surface at the lower end of the L-shaped rod 48 is pushed by the nut, it pulls the spring retraction rod 49 to extend. When the spring retraction rod 49 reaches its maximum value, the inclined surface at the lower end of the L-shaped rod 48 moves upward and separates from the bolt head under the action of the bolt head's resistance. At this time, the spring retraction rod 49 retracts and resets, and the bolt head is rotated again by the folding plate 46. Finally, the bolt moves to the inside of the heating tube 34 and is dried by the heating tube 34. Finally, the bolt moves out along the spiral groove between the multiple spiral blades 39, completing the coating of the bolt by the device.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency coating device for bolt processing, comprising a coating tank (1), characterized in that: A constant speed conveying mechanism (2) is installed on the left side of the top surface of the coating tank (1), and a directional conveying mechanism (3) is provided on the right side of the constant speed conveying mechanism (2), and the directional conveying mechanism (3) is installed on the right side of the top surface of the coating tank (1). The directional conveying mechanism (3) is equipped with a bolt rotating mechanism (4). The bolt is conveyed to the directional conveying mechanism (3) at a constant speed by the constant speed conveying mechanism (2) and then conveyed to the coating tank (1). The bolt rotating mechanism (4) is used to coat the threaded area of ​​the bolt immersed in the coating tank (1). The constant speed conveying mechanism (2) includes a housing (21) fixed on the left side of the top surface of the coating tank (1). The housing (21) is equipped with a feed pipe (25) and a discharge pipe (26), and both the feed pipe (25) and the discharge pipe (26) are inclined. The directional conveying mechanism (3) includes two limiting slide rails (31), one end of each of the two limiting slide rails (31) is fixed on one end of the discharge pipe (26), and a bearing (37) is provided on the outer side of the left end of the two limiting slide rails (31), and the outer ring of the bearing (37) is fixed on the housing (21). A connecting plate (32) is fixedly connected to one side of the two limiting slide rails (31), and a connecting frame (33) is fixedly connected to the right side of each of the two limiting slide rails (31). A heating tube (34) is fixedly connected to the end of the connecting frame (33) away from the limiting slide rail (31). The heating tube (34) is fixed on the coating tank (1). A rotating tube (35) is rotatably connected to the left end of the heating tube (34). The outer side of the rotating tube (35) is connected to the drive motor (36) fixed on the rear side of the coating tank (1) via a belt. Multiple protrusions (38) are fixedly connected to the inner walls of the rotating tube (35) and the bearing (37), and the multiple protrusions (38) are arranged in a ring shape. A spiral blade (39) is fixedly connected to each of the multiple protrusions (38). The multiple spiral blades (39) form a double-cone hollow tube body, and the inner side of the multiple spiral blades (39) overlaps with the side of the two limiting slide rails (31). The bolt rotating mechanism (4) includes a rotating gear (41) rotatably connected to the connecting plate (32). Two toothed plates (42) mesh on the rotating gear (41), and the two toothed plates (42) are symmetrically distributed on both sides of the rotating gear (41). A sliding plate (43) is fixedly connected to the lower side of the toothed plate (42), and the sliding plate (43) is slidably connected to a groove (44) opened on the side of the limiting slide rail (31). A first spring telescopic rod (45) is fixedly connected to the slide plate (43). Two folding plates (46) are hinged to the end of the first spring telescopic rod (45), and the end of the folding plate (46) away from the first spring telescopic rod (45) is hinged to the outer tube of the first spring telescopic rod (45).

2. The high-efficiency coating device for bolt processing according to claim 1, characterized in that: A fixed motor (22) is installed on the back of the housing (21). One end of the rotating shaft of the fixed motor (22) extends into the interior of the housing (21) and is fixedly connected to a feeding disc (23). A groove (24) is provided on the feeding disc (23). The feed pipe (25), the discharge pipe (26) and the groove (24) have the same diameter; The discharge pipe (26) is provided with a through groove (27).

3. The high-efficiency coating device for bolt processing according to claim 2, characterized in that: The bolt rotating mechanism (4) further includes a rectangular groove (47) opened on the connecting plate (32). An L-shaped rod (48) is slidably connected inside the rectangular groove (47), and one end of the L-shaped rod (48) is fixed on one of the toothed plates (42). The lower end of the L-shaped rod (48) is an inclined surface. A spring retraction rod (49) is fixedly connected to the L-shaped rod (48), and the end of the spring retraction rod (49) away from the L-shaped rod (48) is fixed inside the rectangular groove (47).

4. The high-efficiency coating device for bolt processing according to claim 3, characterized in that: Two wedge plates (5) are symmetrically fixedly connected to the lower side of the inner wall of the coating pool (1). An arc plate (6) is hinged to the opposite side of each of the two wedge plates (5). A second spring telescopic rod (7) is hinged to the outer side of the arc plate (6). The end of the second spring telescopic rod (7) away from the arc plate (6) is hinged to the wedge plate (5), and the wedge plate (5) is on the lower side of the connecting plate (32).

5. The high-efficiency coating device for bolt processing according to claim 4, characterized in that: An arc-shaped guard plate (8) is installed on the coating tank (1), and the inner side of the arc-shaped guard plate (8) overlaps with the outer side of the spiral blade (39).

6. The method of using the high-efficiency coating device for bolt processing according to claim 5, characterized in that: Includes the following steps: S1: The bolt to be coated is fed into the feed pipe (25), so that the bolt falls into the groove (24) on the feed plate (23) along the feed pipe (25). Then, the single bolt in the groove (24) is rotated by the intermittent rotation of the fixed motor (22). When the bolt rotates to the outlet of the discharge pipe (26), it falls obliquely between the two limit slide rails (31) along the discharge pipe (26). The bolt rod deflects along the through groove (27) by its own gravity and swings between the two limit slide rails (31). As the bolt rod moves down, it enters the spiral groove between multiple spiral blades (39). At this time, the bolt rod is vertically downward under the action of gravity, and the bolt head is stuck on the two limit slide rails (31). S2: At this time, the drive motor (36) drives the rotating tube (35) to rotate intermittently clockwise, so that multiple spiral blades (39) rotate simultaneously, and the bolt stuck between them is transported to the right, ensuring that the bolt in the housing (21) is continuously transported to the right. When the bolt moves to the lower side of the connecting plate (32) under the action of the spiral blade (39), the bolt shank comes into contact with the liquid inside the coating tank (1). Then, as the bolt shank continues to move to the right, it comes into contact with the arc plate (6), ensuring that the thread on the bolt surface comes into contact with the liquid inside the coating tank (1), and scrapes out the gas in the thread on the bolt surface. Then, the bolt shank continues to move to the right under the action of the spiral blade (39). When the bolt head comes into contact with the outside of the folding plate (46), the first spring telescopic rod (45) contracts, increasing the frictional resistance between the bolt head and the folding plate (46), causing the bolt shank to rotate, increasing the fluidity of the liquid in the coating tank (1) in the bolt shank. S3: When the head of the bolt moves under the action of the spiral plate (39) and abuts against the inclined surface at the lower end of the L-shaped rod (48), the L-shaped rod (48) drives the rear toothed plate (42) to move to the right, and when the rear toothed plate (42) moves to the right, it cooperates with the rotating gear (41) to drive the front toothed plate (42) to move to the left, so that the slide plates (43) on the lower side of the two toothed plates (42) move in opposite directions in the slide groove (44), so that the folding plates (46) on the opposite side of the two slide plates (43) move in opposite directions, and push the end of the bolt that has moved to the space between the two slide plates (43), so that the shank of the bolt rotates in the coating pool (1); When the inclined surface at the lower end of the L-shaped rod (48) is pushed by the nut, it pulls the spring retraction rod (49) to extend. When the spring retraction rod (49) reaches its maximum value, the inclined surface at the lower end of the L-shaped rod (48) moves upward and separates from the head of the bolt under the action of the bolt head's resistance. At this time, the spring retraction rod (49) retracts and resets. The bolt head is rotated again by the folding plate (46). Finally, the bolt moves to the inside of the heating tube (34) and is dried by the heating tube (34). Finally, the bolt moves out along the spiral groove between the multiple spiral blades (39), completing the coating of the bolt by the device.

Images